WO2021075510A1 - Conveyor drive unit and roller conveyor device - Google Patents

Abstract

A conveyor drive unit (50) drives each roller of a roller conveyor device having a roller array, the conveyor drive unit (50) comprising: roller units (51, 52) that have drive sprockets (54, 57) for driving a plurality of rollers constituting the roller array, and that have a rotating shaft fixed to the centers of the drive sprockets (54, 57); and a motor (61) that is attached to a bracket provided to the roller units (51, 52) and that drives the sprockets via the rotating shaft.

Description

Conveyor drive unit and roller conveyor device

The present invention relates to a conveyor drive unit that drives a row of rollers and a roller conveyor device using the same. The present application claims priority over Japanese Patent Application No. 2019-188877 filed on October 15, 2019, the contents of which are incorporated herein by reference.

A roller conveyor device is a device for placing and transporting articles on a plurality of rollers arranged at intervals. For example, the roller conveyor device of Patent Document 1 includes a single row or a plurality of rows of conveyor frames arranged in a direction in which an article should be conveyed, a plurality of rollers arranged in the conveying direction on the conveyor frame, and a plurality of the rollers. A plurality of driven sprockets sharing an axis with each of the rollers, a motor for driving the plurality of rollers, a drive sprocket fixed to the rotating shaft of the motor, and a plurality of driven sprockets and a chain hung on the drive sprocket. And have.
When the drive sprocket is rotated by the motor, the plurality of driven sprockets are rotated via the chain, and the plurality of rollers sharing the shaft with them are rotated. The article is conveyed along the roller row as the rollers rotate.

In Patent Document 2, if a plurality of rollers, a rotating shaft, and a sprocket are individually assembled to the conveyor frame, the assembling work becomes complicated. Therefore, one having the rotating shaft and a sprocket sharing the rotating shaft is used. A roller unit is provided in which a plurality of rollers are surrounded by a unit case to facilitate assembly to a conveyor frame.

Japanese Patent No. 5162906 Japanese Patent No. 5226811

By the way, in a conventional roller conveyor device, when assembling parts related to a drive unit to a conveyor frame, it is necessary to individually assemble a plurality of parts such as a motor, a bracket for mounting the motor, a roller unit, a drive shaft, and a cover. As a result, the assembly work is complicated and there is a risk of reducing work efficiency. Further, in the existing roller conveyor device, the motor replacement work is complicated, and it is necessary to stop the roller conveyor device for a long time during the replacement work, and the goods cannot be transported during that time, so that the efficiency of the transport work is improved. It will lower it.

The present invention has been made in view of the above circumstances, and is a conveyor drive unit capable of completing mounting work on a conveyor frame more efficiently and in a short time than before, and a roller conveyor device using the same. Is intended to provide.

A first aspect of the present invention is provided in a roller conveyor device having two rows of rollers, one on the driving side and the other on the driven side, and rotating on a roller body constituting the first roller row on the driving side. A conveyor drive unit that applies a driving force and transmits the rotational driving force to a roller body constituting the second roller row on the driven side.
A first rotating shaft body having a first roller body constituting the first roller row, and a first rotating shaft body.
The first casing that pivotally supports the first rotating shaft body and
A first roller unit provided on one side of the first rotating shaft body, including a first rotating body that rotates together with the first rotating shaft body and drives the first roller body. ,
A second rotating shaft body having a second roller body constituting the second roller row,
A second casing that pivotally supports the second rotating shaft body, and
A second roller unit provided on one side of the second rotating shaft body, including a second rotating body that rotates together with the second rotating shaft body and drives the second roller body. ,
A shaft that transmits the rotation of the first rotating shaft body to the second rotating shaft body, and
The drive source that supplies the rotational driving force and
A transmission mechanism provided between the first and second roller units and transmitting the rotational driving force of the driving source to the first rotating shaft body or the shaft.
It includes a housing that supports the shaft, the drive source, and the transmission mechanism, and is connected to the first roller unit and the second roller unit.

A second aspect of the present invention is a two-row roller row unit in which one is the driving side and the other is the driven side.
A roller conveyor device including the conveyor drive unit of the first aspect provided adjacent to the two rows of the roller row units in the extending direction.
The roller row unit is
A third rotating shaft body having a third roller body,
A third casing that pivotally supports the third rotating shaft body,
A third rotating body provided on one side of the third rotating shaft body and rotating together with the third rotating shaft body is included.
The roller conveyor device is
A first transmission unit that transmits the rotation of the first rotating body included in the first roller unit to the third rotating body included in one of the two rows of roller units.
A second transmission unit that transmits the rotation of the second rotating body included in the second roller unit to the third rotating body included in the other of the two rows of roller units is further provided.

A third aspect of the present invention is provided in a roller conveyor device having two rows of rollers, one on the driving side and the other on the driven side, and applying a rotational driving force to the roller bodies forming the roller rows on the driving side. It is a conveyor drive unit that applies the rotational driving force and transmits the rotational driving force to the rollers forming the roller row on the driven side.
A first rotating shaft body having a first roller body constituting the first roller row, and a first rotating shaft body.
A first roller unit including a first casing that pivotally supports the first rotating shaft body, and a first roller unit.
A second rotating shaft body having a second roller body constituting the second roller row,
A second roller unit including a second casing that pivotally supports the second rotating shaft body, and a second roller unit.
A shaft that transmits the rotation of the first rotating shaft body to the second rotating shaft body, and
The drive source that supplies the rotational driving force and
A transmission mechanism provided between the first and second roller units and transmitting the rotational driving force of the driving source to the shaft or the first rotating shaft body.
It includes a housing that supports the shaft, the drive source, and the transmission mechanism, and is connected to the first roller unit and the second roller unit.

A fourth aspect of the present invention includes a first conveyor frame on the driving side and a second conveyor frame on the driven side, which define two roller rows in which one is the driving side and the other is the driven side, and the first one. A roller conveyor device including a conveyor frame, a roller row unit mounted on the second conveyor frame, and a plurality of conveyor drive units according to the third aspect.
The first conveyor frame comprises a first engaging portion with which the first roller unit of the conveyor driving unit is engaged.
The second conveyor frame includes a second engaging portion with which the second roller unit of the conveyor driving unit is engaged.
The plurality of conveyor drive units engage the first roller unit with the first engaging portion, the second roller unit with the second engaging portion, and the roller row. It is provided adjacent to the extending direction of the unit.

A fifth aspect of the present invention is provided in a roller conveyor device having a row of rollers, which applies a rotational driving force to the roller bodies constituting the roller row and applies the rotational driving force to the driven side of the roller row. It is a conveyor drive unit that transmits to the roller body of
The roller body constituting the roller row and the roller body
A shaft body that holds the roller body and
A casing that rotatably supports the roller body held by the shaft body, and
Provided on the shaft body
A drive roller unit including a rotating body for driving the shaft body holding the roller body, and a drive roller unit.
The drive source that supplies the rotational driving force and
It is provided with a transmission mechanism for transmitting the rotational driving force of the driving source to the rotating shaft body.

A sixth aspect of the present invention is a driven roller row unit having a row of rollers and a driven roller row unit.
A roller conveyor device including the conveyor drive unit according to the fifth aspect, which is provided adjacent to the roller row in the extending direction.
The driven roller row unit is
The driven roller body constituting the roller row and
A driven shaft body that holds the driven roller body and
A driven support portion that supports the driven shaft body and
Includes a driven rotating body for driving the driven shaft body that holds the driven roller body.
The roller conveyor device is
Further provided is a transmission unit that transmits the rotation of the rotating body included in the drive roller unit to the driven rotating body included in the row of roller row units.

According to the present invention, unlike the conventional roller conveyor device, the drive mechanism of the roller body including the motor is unitized, so that the man-hours and work time for mounting the drive mechanism on the roller conveyor device are reduced. , The efficiency of replacement work is improved. As a result, the time for stopping the operation of the roller conveyor device can be shortened, and the decrease in the efficiency of article transportation in the facility where the roller conveyor device is introduced can be minimized.

It is a perspective view of the roller conveyor device (first embodiment) including a conveyor drive unit. It is sectional drawing of the driven roller unit included in the conveyor drive unit which comprises a roller conveyor device. It is a perspective view of a conveyor drive unit (however, excluding a cover). It is sectional drawing of the conveyor drive unit. It is sectional drawing which magnified view of one drive roller unit shown in FIG. It is sectional drawing which magnified view of the other drive roller unit shown in FIG. It is a perspective view which shows the process at the time of replacing a conveyor drive unit with a conveyor frame. Similar to FIG. 7, it is a perspective view which shows the process at the time of replacing a conveyor drive unit with a conveyor frame. It is a perspective view which shows the roller conveyor apparatus which includes the conveyor drive unit (a modification of 1st Embodiment). It is sectional drawing of the conveyor drive unit (a modification of 1st Embodiment). It is a perspective view of the roller conveyor device (second embodiment) including a conveyor drive unit. It is sectional drawing of the conveyor drive unit (second embodiment). It is a perspective view of the roller conveyor device (third embodiment) including a conveyor drive unit. It is sectional drawing of the conveyor drive unit (third embodiment). It is sectional drawing of the roller conveyor apparatus which combined two roller conveyor apparatus (third embodiment), It is a perspective view which shows the roller conveyor apparatus which includes the conveyor drive unit (the fourth embodiment). It is sectional drawing of the roller row unit (fourth embodiment). It is sectional drawing of the conveyor drive unit (fourth embodiment). It is sectional drawing which magnified view of the roller drive unit shown in FIG. It is sectional drawing which magnified view of the roller support unit shown in FIG.

The conveyor drive unit according to the present invention and the roller conveyor device including the conveyor drive unit will be described below.
(First Embodiment)
1 to 8 show an embodiment of a roller conveyor device 1 having two rows of rollers with one on the driving side and the other on the driven side, and a conveyor driving unit 50 used for the roller conveyor device 1.
As shown in FIG. 1, the roller conveyor device 1 of the present embodiment has the first and second conveyor frames 10 and 20 arranged in two rows and the conveyor frames 10 and 20 along the longitudinal direction of the frames, respectively. It includes a roller row unit 40 that is continuously arranged, and a conveyor drive unit 50 that drives each of the driven roller units 40. The first and second conveyor frames 10 and 20 are installed in a predetermined area in the facility where the roller conveyor device 1 is introduced via a support base (not shown).

One of the first mounting portion 11 and the first mounting portion 11 extending in the longitudinal direction and in which the roller row unit 40 is arranged on the first conveyor frame 10 in one row on the drive side. A first side wall portion 12 that rises vertically from the end portion is formed. A first upper member 13 is detachably configured on the upper portion 12a of the first side wall portion 12, and is fixed by a fixing member (not shown). As shown in FIG. 5, one side edge of the first upper member 13 is fixed to the upper portion 12a, and the other side edge is above the roller row unit 40 and the first roller unit 51 on the drive side, which will be described later. It has a predetermined width so as to project and overlap a part of them. A T-shaped groove 11a for fixing the roller row unit 40 and the first roller unit 51 is formed in the first mounting portion 11 along the longitudinal direction. The first mounting portion 11 forms an array path in which the roller row units 40 on the drive side are lined up. In the present embodiment, the T-shaped grooves 11a are formed in rows on the left and right sides of the first mounting portion 11, and the roller row unit 40 and the first roller unit 51 are fixed to the T-shaped grooves 11a.

The second conveyor frame 20 in the other row on the driven side has a second mounting portion 21 extending in the longitudinal direction and in which the roller row unit 40 is arranged, and the other of the second mounting portions 21. A second side wall portion 22 that rises vertically from the end portion is formed. A second upper member 23 is detachably configured on the upper portion 22a of the second side wall portion 22, and is fixed by a fixing member (not shown). As shown in FIG. 6, the second upper member 23 has one side edge fixed to the upper portion 22a and the other side edge above the roller row unit 40 and the driven side second roller unit 52 described later. It has a predetermined width so as to overlap a part. A T-shaped groove 21a for fixing the roller row unit 40 and the second roller unit 52 is formed in the second mounting portion 21 along the longitudinal direction. The second mounting portion 21 forms an array path in which the roller row units 40 on the driven side are lined up. In the present embodiment, the T-shaped grooves 21a are formed in rows on the left and right sides of the second mounting portion 21, and the roller row unit 40 and the second roller unit 52 are fixed to the T-shaped grooves 21a.

In the first mounting portion 11, a plurality of roller row units 40 and a first roller unit 51 that is a drive side of the conveyor drive unit 50 are provided with a first roller body 67 and a third roller body, which will be described later. By arranging the 42s in a row, the first roller row on the drive side is formed on the first conveyor frame 10. Further, in the second mounting portion 21, a plurality of roller row units 40 and a second roller unit 52 on the driven side of the conveyor drive unit 50 are provided with a second roller body 72 and a third roller unit 72, which will be described later. By arranging the roller bodies 42 in a row, a second row of rollers on the driven side is formed on the second conveyor frame 20. The roller row unit 40 may be provided one by one in the first and second mounting portions 11 and 21.

As shown in FIG. 2, the roller row unit 40 includes a unit case (third casing) 41 having a substantially rectangular shape, a plurality of third roller bodies 42 rotatably provided in the unit case 41, and a roller body. It has a third rotating shaft body 43 that transmits a rotational driving force to the 42, and a driven sprocket (third rotating body) 44 that is rotatably supported together with the rotating shaft body 43. There is. The driven sprocket 44 is fixed to one end of the third rotating shaft body 43 and is driven by a transmission member (for example, a chain) described later. In the roller row unit 40 of the present embodiment, the unit case 41 is formed so as to extend in the row direction, and the set of the third roller body 42, the third rotating shaft body 43, and the driven sprocket 44 is formed in the row direction. A plurality of them are arranged at predetermined intervals. As another configuration of the roller row unit 40, only one set of the third roller body 42, the third rotating shaft body 43, and the driven sprocket 44 may be provided.

The unit case 41 is a cast product of an aluminum alloy, and a two-piece structure composed of one half-split body 41a and the other half-split body 41b is adopted. Further, the third roller body 42 is arranged between the half-split body 41a and the half-split body 41b. A bearing 45a that supports the central portion of the third rotating shaft 43 is fitted into the pocket portion 41c formed in one half-split body 41a, and the pocket portion 41d formed in the other half-split body 41b is fitted with a bearing 45a. Is fitted with a bearing 45b that supports the other end of the third rotating shaft body 43.

A hole 42a through which the third rotating shaft body 43 is inserted is formed in the center where the rotation axis of the third roller body 42 is set. Then, when the rotating shaft body 43 is rotated via the driven sprocket 44, the roller row unit 40 has a third roller row unit 40 due to the frictional force acting between the third roller body 42 and the third rotating shaft body 43. By transmitting the rotational driving force of the rotating shaft body 43 to the third roller body 42, the third roller body 42 and the third rotating shaft body 43 can rotate together (so-called friction). Drive mechanism) is adopted.

By the way, the article W conveyed by the third roller body 42 may stop without being conveyed on the conveyor for some reason (for example, the movement of the article is blocked by the stopper). In this case, the rotation of the third roller body 42 is hindered by the stoppage of the article W, but the friction drive mechanism causes the third rotating shaft body 43 or the driven sprocket 44 to move with respect to the third roller body 42. It idles so that an excessive mechanical load is not applied to the roller row unit 40.

An opening 41e including an opening that exposes a part of the outer peripheral surface of the third roller body 42 is formed on the upper surface of the unit case 41, and the article W is exposed from the opening of the upper opening 41e. It is supported and conveyed on the outer peripheral surface of the third roller body 42.

Further, the side surface 41f of the half-split body 41a constituting one of the unit cases 41 is located between the third roller body 42 and the driven sprocket 44, and is located together with the first and second conveyor frames 10 and 20 as the driven sprocket. Each of the accommodation spaces in which the 44 are arranged is formed. Transmission members are arranged in each of these accommodation spaces.

The roller row unit 40 is mounted on the first mounting portion 11 of the first conveyor frame 10 and the second mounting portion 21 of the second conveyor frame 20, respectively, and the roller row unit 40 is mounted on the first mounting portion 11 of the first mounting portion 11. It is fixed to the T-shaped groove 11a and the T-shaped groove 21a of the second mounting portion 21 via a bolt and a T-shaped groove nut. The unit case 41 of the roller row unit 40 is formed with a through hole 41g that penetrates the unit case 41 up and down. The roller row unit 40 is arranged on the first and second mounting portions 11 and 21 so that the through holes 41g formed in the unit case 41 communicate with the T-shaped grooves 11a and 21a. Then, a bolt is inserted into the through hole 41g from above the unit case 41, and screwed into the T-shaped groove nuts arranged in the T-shaped grooves 11a and 21a to be fastened. As a result, the roller row unit 40 is fixed to the first and second mounting portions 11 and 21. The conveyor drive unit 50, which will be described later, is also fixed to the first and second mounting portions 11 and 21 in the same manner as the roller row unit 40.

The conveyor drive unit 50 is mounted on the first conveyor frame 10 alongside the roller row unit 40, and on the second conveyor frame 20 alongside the roller row unit 40. Between the second roller unit 52, the base frame (housing) 59 described later connecting the first and second roller units 51, 52, and the first roller unit 51 and the second roller unit 52. It is provided with a shaft 60 that transmits a driving force between the shafts 60.

As shown in FIGS. 3, 4 and 5, the first roller unit 51 includes a substantially rectangular unit case (first casing) 53 and a drive-side roller rotatably provided on the unit case 53. A first roller body 67 forming a row, a first rotating shaft body 55 that transmits a rotational driving force to the roller body 67, and a first rotating shaft body 55 provided on one side of the rotating shaft body 55. It has a drive sprocket (first rotating body) 54 on the drive side that is rotatably supported together with the 55. The first rotary shaft body 55 transmits a rotary drive force to the first roller body 67 and the drive sprocket 54 on the drive side. Further, the first roller unit 51 has an auxiliary roller 68.

The drive sprocket 54 on the drive side is fixed to one end of the first rotary shaft body 55, rotates together with the rotary shaft body 55, and causes a roller row on the drive side via a transmission member (for example, a chain) 75 described later. The driven sprocket 44 included in the roller row unit 40 on the driving side to be formed is driven.

The unit case 53 is also a cast product of an aluminum alloy, and as shown in FIGS. 3 and 5, a two-piece structure including one half-split body 53a and the other half-split body 53b is adopted, and the first roller body 67 Is arranged between the half-split body 53a and the half-split body 53b. A bearing 69b that supports the first intermediate portion in the axial direction of the first rotating shaft body 55 is fitted into the pocket portion 53c formed in one half-split body 53a, and is formed in the other half-split body 53b. A bearing 69c that supports a second intermediate portion of the first rotating shaft body 55 is fitted in the pocket portion 53d.

The other half-split body 53b of the first roller unit 51 includes a plate-shaped subframe (housing connecting portion) 59a, and the subframe 59a supports the base frame 59. The other half-split body 53b may be a single member integrally formed with the subframe 59a, or may be integrally formed by connecting separate members.

A hole 67a through which the first rotating shaft body 55 is inserted is formed in the center including the rotation axis of the first roller body 67. A friction drive mechanism, which is also used in the roller row unit 40, is adopted between the first roller body 67 and the first rotating shaft body 55. As a result, the first roller body 67 rotates together with the first rotating shaft body 55.

By the way, the article W conveyed by the first roller body 67 may stop on the conveyor for some reason (for example, the movement of the article is blocked by the stopper). In this case, the rotation of the first roller body 67 is hindered by the stoppage of the article W, but the friction drive mechanism described above drives the first rotation shaft body 55 or the drive side with respect to the first roller body 67. The sprocket 54 is designed to idle.

The first roller body 67 is arranged between the half bodies 53a and 53b, and the first rotating shaft body 55 is supported by two bearings 69b and 69c at two locations on both sides of the first roller body 67. .. By fixing the half split bodies 53a and 53b to each other, the first roller body 67 is surrounded by the half split bodies 53a and 53b, and the first roller body 67 and the first rotating shaft body 55 are the unit case 53. It is rotatably supported against. An opening 53e including an opening that exposes a part of the outer peripheral surface of the first roller body 67 is formed on the upper surface of the unit case 53, and the article W is exposed from the opening of the upper opening 53e. It is conveyed while being supported by the outer peripheral surface of one roller body 67.

The side surface 53 g of the half-split body 53a constituting one of the unit cases 53 is located between the first roller body 67 and the drive sprocket 54 on the drive side, and together with the first conveyor frame 10, the first roller body 67 Is formed, and together with the first conveyor frame 10, a storage space in which the drive sprocket 54 is arranged is formed. The transmission member is arranged in this accommodation space.

As shown in FIGS. 3, 4 and 6, the second roller unit 52 includes a substantially rectangular unit case (second casing) 56 and a driven roller provided on the unit case 56 so as to be rotatable. A second roller body 72 forming a row, a second rotating shaft body 58 that transmits a rotational driving force to the roller body 72, and a second rotating shaft body 58 provided on one side of the rotating shaft body 58. It has a driven sprocket (second rotating body) 57 on the driven side that is rotatably supported together with the 58. The second rotating shaft body 58 transmits a rotational driving force to the second roller body 72 and the driven sprocket 57 on the driven side. Further, the second roller unit 52 has an auxiliary roller 73.

The drive sprocket 57 on the driven side is fixed to one end of the second rotating shaft body 58, rotates together with the rotating shaft body 58, and passes the roller row on the driven side via a transmission member (for example, a chain) 76 described later. It drives the driven sprocket 44 included in the roller row unit 40 on the driven side to be formed.

The unit case 56 is also a cast product of an aluminum alloy, and as shown in FIGS. 3 and 6, a two-piece structure including one half-split body 56a and the other half-split body 56b is adopted, and the second roller body 72 Is arranged between the half-split body 56a and the half-split body 56b. A bearing 74a that supports the first central portion in the axial direction of the second rotating shaft body 58 is fitted into the pocket portion 56c formed in one half-split body 56a, and is formed in the other half-split body 56b. A bearing 74b that supports the other end portion of the second rotating shaft body 58 is fitted in the pocket portion 56d.

The other half-split body 56b of the second roller unit 52 includes a plate-shaped subframe (housing connecting portion) 59b, and the subframe 59b supports the base frame 59. The other half-split body 56b may be a single member integrally formed with the subframe 59b, or may be integrally formed by connecting separate members.

A hole 72a through which the second rotating shaft body 58 is inserted is formed in the center including the rotation axis of the second roller body 72. A friction drive mechanism, which is also used in the roller row unit 40, is adopted between the second roller body 72 and the second rotating shaft body 58. As a result, the second roller body 72 rotates together with the second rotating shaft body 58.

By the way, the article W conveyed by the second roller body 72 may stop on the conveyor for some reason (for example, the movement of the article is blocked by the stopper). In this case, the rotation of the second roller body 72 is hindered by the stop of the article W, but the friction drive mechanism described above drives the second rotating shaft body 58 or the driven side with respect to the second roller body 72. The sprocket 57 is designed to idle.

The second roller body 72 is arranged between the half split bodies 56a and 56b, and the second rotating shaft body 58 is supported by two bearings 74a and 74b at two positions on both sides of the second roller body 72. .. By fixing the half split bodies 56a and 56b to each other, the second roller body 72 is surrounded by the half split bodies 53a and 53b, and the second roller body 72 and the second rotating shaft body 58 are the unit case 56. It is rotatably supported against. An opening 56e including an opening that exposes a part of the outer peripheral surface of the second roller body 72 is formed on the upper surface of the unit case 56, and the article W is exposed from the opening of the upper opening 56e. It is conveyed while being supported by the outer peripheral surface of the second roller body 72.

The side surface 56g of the half-split body 56a constituting one of the unit cases 56 is located between the second roller body 72 and the driven sprocket 57 on the driven side, and the drive sprocket 57 is arranged together with the second conveyor frame 20. Form a storage space. The transmission member is arranged in this accommodation space.

As shown in FIGS. 3 and 4, the conveyor drive unit 50 includes a rectangular and plate-shaped base frame 59 that integrally connects the first roller unit 51 and the second roller unit 52, and a first rotating shaft. A shaft 60 connecting the body 55 and the second rotating shaft body 58, a motor (drive source) 61 for rotating the first and second rotating shaft bodies 55 and 58, and a third connected via the shaft 60. A cover 63 that covers each device including the shaft 60, the motor 61, and the transmission mechanism 62 between the transmission mechanism 62 that transmits the rotational driving force of the motor 61 to the first and second rotary shaft bodies 55 and 58 and the base frame 59. And include.

The base frame 59 is integrally connected to the first and second roller units 51 and 52 connected via the shaft 60. One end of the base frame 59 is connected to the first roller unit 51 via the subframe 59a. The other end of the base frame 59 is connected to the second roller unit 52 via the subframe 59b.

The motor 61 is attached to the drive source attachment portion 70a attached to the subframe 59a via the speed reducer 65. In the present embodiment, as shown in FIG. 4, the output shaft 61a of the motor 61, the speed reducer 65, and the motor 61 are arranged in a straight line, and the output shaft 61a is located parallel to the shaft 60. Although the drive source mounting portion 70a is a member different from the subframe 59b, the drive source mounting portion 70a may be integrally configured with the subframe 59b.

As shown in FIG. 5, the transmission mechanism 62 is fixed to the pulley 77 fixed to the output shaft 61a of the speed reducer 65 and the first rotation shaft body 55 of the first roller unit 51 as the rotation transmission mechanism. It includes a pulley 78 and a timing belt 79 hung between the pulleys 77 and 78.

As shown in FIGS. 3 and 4, the shaft 60 is connected to the first rotating shaft body 55 and the second rotating shaft body 58 via a coupling 60a. In the present embodiment, the shaft 60 is integrally formed with the first rotating shaft body 55, and is connected to the second rotating shaft body 58 via the coupling 60a. The shaft 60 may be separated from the first rotating shaft body 55. In that case, the shaft 60 is connected to the first rotating shaft body 55 and the second rotating shaft body 58 via two couplings 60a arranged at both ends thereof.
In the present embodiment, when the motor 61 of the conveyor drive unit 50 is operated, the rotational driving force of the output shaft 61a is transmitted to the first rotating shaft body 55 via the rotational transmission mechanism of the transmission mechanism 62, and the shaft 60 is further transferred. It is transmitted to the second rotating shaft body 58 connected to the first rotating shaft body 55 via the coupling 60a.

On the first conveyor frame 10 side, the first roller body 67 and the drive sprocket 54 on the drive side rotate together with the first rotation shaft body 55, and the drive side is via the first transmission member (for example, a chain) 75. It drives each driven sprocket 44 arranged along one of the roller rows. On the second conveyor frame 20 side, the second roller body 72 and the driven sprocket 57 on the driven side rotate together with the second rotating shaft body 58, and the driven sprocket 57 rotates via the second transmission member (for example, a chain) 76 on the driven side. It drives each driven sprocket 44 arranged along the other roller row. When each of the driven sprocket 44 on the driving side and the driven side rotates, the rotational driving force is transmitted to each roller body 42 via the respective rotating shaft body 43.
The article W is supported and conveyed by the outer peripheral surfaces of the first and second roller bodies 67 and 72 that rotate synchronously and the roller bodies 42 of the respective roller row units 40 on the driving side and the driven side.

The conveyor drive unit 50 includes a cover 63 that covers the housing. The cover 63 has a U-shaped cross section when viewed from the longitudinal direction of the shaft 60, and accommodates the shaft 60, the transmission mechanism 62, the reduction gear 65, and the motor 61 inside and is attached to the base frame 59. The base frame 59 may be provided with a cooling fan 80 for suppressing overheating in the cover 63.

In the present embodiment, a DC motor is adopted as the motor 61, and the base frame 59 includes a control board (control unit) 64 for controlling the operation of the motor 61 and a motor 61 connected to the control board 64. A power supply socket (power supply unit) 64a is provided. The insertion end of the plug in the power supply socket 64a is exposed on the lower surface of the base frame 59, and the plug of the power supply cable is connected upward with respect to the power supply socket 64a. An AC motor may be used for the motor 61. In that case, the control board may not be provided on the base frame 59.

The auxiliary roller 68 is arranged between the half-split bodies 53a and 53b like the first roller body 67, and the shafts (not shown) supporting the auxiliary roller 68 are placed between the half-split bodies 53a and 53b at two positions on both sides of the auxiliary roller 68. It is supported by auxiliary support portions 53a1 and 53b1 provided in. Then, by connecting and fixing the half-split bodies 53a and 53b to each other, the auxiliary roller 68 is rotatably supported with respect to the unit case 53. An opening 53f having an opening for exposing a part of the auxiliary roller 68 is formed at a portion where the upper surface of the unit case 53 and one side surface intersect with each other. The auxiliary roller 68 assists the movement of the article W by supporting the article W depending on the situation in the process of being conveyed on the conveyor. The auxiliary roller 68 is arranged side by side with the first roller body 67, or is arranged on either side of the roller body 67. Depending on the location where the conveyor drive unit 50 is arranged, the auxiliary roller 68 may not be provided on the first roller unit 51.

The auxiliary roller 73 is arranged between the half-split bodies 56a and 56b like the second roller body 72, and the shafts (not shown) supporting the auxiliary roller 73 are placed between the half-split bodies 56a and 56b at two locations on both sides of the auxiliary roller 73. It is supported by auxiliary support portions 56a1 and 56b1 provided in. Then, by connecting and fixing the half-split bodies 56a and 56b to each other, the auxiliary roller 73 is rotatably supported with respect to the unit case 56. An opening 56f having an opening for exposing a part of the auxiliary roller 73 is formed at a portion where the upper surface of the unit case 56 and one side surface intersect with each other. The auxiliary roller 73 assists the movement of the article W by supporting the article W depending on the situation in the process of being conveyed on the conveyor. The auxiliary roller 73 is arranged side by side with the second roller body 72, or is arranged on either side of the roller body 72. Depending on the location where the conveyor drive unit 50 is arranged, the auxiliary roller 73 may not be provided on the second roller unit 52.

The first roller unit 51 and the second roller unit 52 are mounted on the first mounting portion 11 of the first conveyor frame 10 and the second mounting portion 21 of the second conveyor frame 20, respectively. It is fixed to the T-shaped groove 11a of the first mounting portion 11 and the T-shaped groove 21a of the second mounting portion 21 via bolts and T-shaped groove nuts. Similar to the unit case 41, the unit cases 53 and 56 of the first and second roller units 51 and 52 are formed with through holes 53i and 56i that vertically penetrate the unit cases 53 and 56 (in each case). 4 or 2). When the roller units 51 and 52 are mounted on the first and second mounting portions 11 and 21, the through holes 53i and 56i formed in the unit cases 53 and 56 communicate with the T-shaped grooves 11a and 21a. , Bolts 84 and 85 are inserted into the through holes 53i and 56i from above the unit cases 53 and 56, and screwed into the T-shaped groove nuts 82 arranged in the T-shaped grooves 11a and 21a to be fastened. As a result, the first and second roller units 51 and 52 are fixed to the first and second mounting portions 11 and 21, and the conveyor drive unit 50 extends between the first and second conveyor frames 10 and 20. Can be installed.

A chain (first transmission member) is formed between the plurality of driven sprockets 44 arranged along the roller row on the first conveyor frame 10 side and the drive sprockets 54 provided on the first roller unit 51 on the drive side. ) 75 is hung, and a chain is formed between the plurality of driven sprockets 44 arranged along the roller row on the second conveyor frame 20 side and the drive sprockets 57 provided on the second roller unit 52 on the driven side. (Second transmission member) 76 is hung. The rotational driving force of the motor 61 is transmitted from the drive sprocket 54 to each of the driven sprockets 44 forming the roller row of the first conveyor frame 10 via the chain 75, and from the drive sprocket 57 to the second via the chain 76. It is transmitted to each driven sprocket 44 constituting the roller row of the conveyor frame 20. The driven sprockets 44 may be provided one by one on the first and second conveyor frames 10 and 20.

Hereinafter, a step of replacing the existing conveyor drive unit attached to the first and second conveyor frames 10 and 20 with a new conveyor drive unit 50 will be described.
First, the plug of the power supply cable is removed from the power supply socket 64a of the existing conveyor drive unit. Next, the first upper member 13 is removed from the first side wall portion 12, and the second upper member 23 is removed from the second side wall portion 22. Next, the chain 75 is removed from the drive sprocket 54, and the chain 76 is removed from the drive sprocket 57.

The bolt 84 that fixed the unit case 53 of the first roller unit 51 to the first mounting portion 11 was removed, and the unit case 56 of the second roller unit 52 was fixed to the second mounting portion 21. Remove the bolt 85. Then, as shown in FIG. 7, the existing conveyor drive unit is removed from the first and second conveyor frames 10 and 20.

A new conveyor drive unit 50 is prepared, the first roller unit 51 is arranged on the first mounting portion 11 of the first conveyor frame 10, and the second roller unit 52 is placed on the second conveyor frame 20. It is arranged on the second mounting portion 21. Then, as shown in FIG. 8, bolts 84 and 85 are inserted into the through holes 53i and 56i from above the unit cases 53 and 56 and screwed into the T-shaped groove nuts 82 arranged in the T-shaped grooves 11a and 21a. As a result, the first and second roller units 51 and 52 are fixed to the first and second mounting portions 11 and 21 of the first and second conveyor frames 10 and 20.

Hang the chain 75 on the drive sprocket 54 and hang the chain 76 on the drive sprocket 57. Next, the first upper member 13 is fixed to the first side wall portion 12, and the second upper member 23 is fixed to the second side wall portion 22. Finally, the plug of the power supply cable is connected to the power supply socket 64a.

According to the roller conveyor device 1 configured as described above, unlike the conventional roller conveyor device, the roller drive mechanism including the motor 61 is unitized as the conveyor drive unit 50, so that it is a conventional type. It can be removed and assembled more easily than the drive unit. Further, the replacement work from the existing conveyor drive unit to the new conveyor drive unit 50 can be easily performed. Therefore, the time from the assembly of the roller conveyor device to the start of operation and the time for stopping the operation during the replacement work of the drive source can be shortened, and the efficiency of goods transportation in the facility where the roller conveyor device is introduced can be reduced. It can be reduced as much as possible.

By the way, in the present embodiment, a structure is adopted in which the rotation of the output shaft is transmitted to the first rotating shaft body 55 via a transmission mechanism 62 that combines a pulley and a timing belt, but a general structure having an output shaft is adopted. A hollow rotary motor may be adopted instead of the motor having a structure. In the hollow rotary motor, the rotor is directly mounted on the first rotating shaft body 55, so that it is not necessary to provide the transmission mechanism 62 on the conveyor drive unit 50 in that case.

(Modification example)
9 and 10 show a modification of the conveyor drive unit included in the first embodiment.
The conveyor drive unit 100 of this modified example has a third roller unit 51A mounted side by side with the roller row unit 40 on the first conveyor frame 10 and a roller row unit 40 arranged side by side with the second conveyor frame 20. A shaft 60 provided between the fourth roller unit 52A to be mounted, the third roller unit 51A and the fourth roller unit 52A, and transmitting a driving force between the two, and the third roller unit 51A. The motor (drive source) 61 for rotating the second rotating shaft body 58 of the first rotating shaft body 55 and the fourth roller unit 52A, and the rotational driving force of the motor 61 are transmitted to the first rotating shaft body 55. The transmission mechanism 62A, the driven shaft body 61b connected to the output shaft 61a of the motor 61 via the shaft 60, and the transmission mechanism 62B for transmitting the rotational driving force of the second rotating shaft body 58. It has. Further, a rectangular and plate-shaped base frame 59 for integrally connecting the third roller unit 51A and the fourth roller unit 52A is provided.

The motor 61 and the speed reducer 65 are located below the first conveyor frame 10. The subframe (housing connection portion) 59c of the third roller unit 51A projects downward from the bottom surface of the first conveyor frame 10, and the subframe (housing connection portion) 59d of the fourth roller unit 52A Projects downward from the bottom surface of the second conveyor frame 20. The motor 61 and the speed reducer 65 are arranged on the outer surface of the subframe 59c so that the longitudinal direction of the motor 61 is parallel to the longitudinal direction of the first conveyor frame 10.

The output shaft 61a of the motor 61 is arranged below the first rotating shaft body 55 in parallel with the first rotating shaft body 55. The driven shaft body 61b is arranged below the second rotating shaft body 58 in parallel with the second rotating shaft body 58 and so as to coincide with the output shaft 61a. The shaft 60 is integrally formed with the output shaft 61a, and is connected to the driven shaft body 61b via a coupling 60a. The shaft 60 is arranged below the first rotating shaft body 55 and the second rotating shaft body 58. One end of the shaft 60 is rotatably supported by a shaft support portion 66a provided on the subframe 59c, and the other end of the shaft 60 is rotatably supported by a shaft support portion 66b provided on the subframe 59d. ing. The shaft 60 may be separated from the output shaft 61a. In that case, the shaft 60 is connected to the first rotating shaft body 55 and the second rotating shaft body 58 via two couplings 60a arranged at both ends thereof.

The transmission mechanism 62A includes a pulley 77a fixed to the output shaft 61a, a pulley 78a fixed to the first rotating shaft body 55, and a timing belt 79a hung between the pulleys 77a and 78a. When viewed in a horizontal cross section, the subframe 59c has a U-shape that opens toward the fourth roller unit 52A with the third roller unit 51A as the back, and inside the U-shape, The pulleys 77a and 78a and the timing belt 79a are arranged so as to fit in the pulleys 77a and 78a.
The transmission mechanism 62B includes a pulley 77b fixed to the driven shaft body 61b, a pulley 78b fixed to the second rotating shaft body 58, and a timing belt 79b hung between the pulleys 77b and 78b. When viewed in a horizontal cross section, the subframe 59d has a U-shape that opens toward the third roller unit 51A with the fourth roller unit 52A as the back, and inside the U-shape, The pulleys 77b and 78b and the timing belt 79b are arranged so as to fit in the pulleys 77b and 78b.

When the motor 61 is operated, the rotational driving force of the output shaft 61a of the motor 61 is transmitted to the first rotating shaft body 55 via the transmission mechanism 62A, and the driven force connected to the output shaft 61a via the shaft 60. It is transmitted to the shaft body 61b, and the rotational driving force thereof is transmitted to the second rotating shaft body 58 via the transmission mechanism 62B. On the first conveyor frame 10 side, the first roller body 67 and the drive sprocket 54 rotate together with the first rotating shaft body 55, and each driven sprocket 44 arranged along one roller row is arranged via the chain 75. Drive. On the second conveyor frame 20 side, the second roller body 72 and the driving sprocket 57 rotate together with the second rotating shaft body 58 to drive each driven sprocket 44 arranged along the other roller row via the chain 76. To do. When each driven sprocket 44 rotates, its rotational driving force is transmitted to the roller body 42 via the rotating shaft body 43.
The article W is conveyed on the first and second roller bodies 67 and 72 that rotate synchronously and on a plurality of roller bodies 42 of the roller row unit 40.

In the conveyor drive unit 100 in this modification, unlike the conveyor drive unit 50 in the first embodiment, the output shaft 61a of the motor 61 arranged below the first rotating shaft body 55 and the second A driven shaft body 61b arranged below the rotating shaft body 58 is connected via a shaft 60. That is, in this modified example, the shaft 60 is not provided between the first rotating shaft body 55 and the second rotating shaft body 58.

In the first embodiment, if the article W to be transported has a shape protruding below the bottom surface where the article W and the first and second roller bodies 67 and 72 are in contact with each other, the protruding portion is the first. It interferes with the shaft 60 arranged between the one rotating shaft body 55 and the second rotating shaft body 58. Therefore, it was impossible to convey the article W having a shape in which a part of the bottom surface protrudes downward, but according to this modification, the shaft 60 is arranged below the first rotating shaft body 55. Since it is arranged between the output shaft 61a and the driven shaft 61b arranged below the second rotating shaft 58, even an article W having a shape in which a part of the bottom surface protrudes downward can be conveyed. Is possible.

(Second embodiment)
Another embodiment of the roller conveyor device having two rows of rollers is shown in FIGS. 11 and 12.
The roller conveyor device 2 of the present embodiment is continuously arranged along the longitudinal direction of the first and second conveyor frames 10a and 20a and the first and second conveyor frames 10a and 20a, respectively. It is provided with a plurality of conveyor drive units 110.
By the way, the roller conveyor device 2 of the present embodiment does not include the roller row unit 40, and the plurality of conveyor drive units 110 are arranged in parallel in the longitudinal direction of the first and second conveyor frames 10a and 20a. There is. Then, the first roller bodies 67 of the plurality of first roller units 51 fixed to the first conveyor frame 10a form one roller row, and the plurality of second rollers fixed to the second conveyor frame 20a. The second roller body 72 of the roller unit 52 forms the other roller row.

The roller conveyor device 2 of the present embodiment does not include the roller row unit 40, and the conveyor drive unit 110 does not need to drive the driven sprocket 44 of the roller row unit 40. Therefore, unlike the conveyor drive unit 50 in the first embodiment, the conveyor drive unit 110 in the present embodiment does not include the drive sprocket 54 in the first roller unit 51, and the second roller unit 52 also does not include the drive sprocket 54. The drive sprocket 57 is not included. Therefore, the roller conveyor device 2 of the present embodiment does not include the chains 75 and 76.
Further, the first conveyor frame 10a is not provided with the first side wall portion 12, and the second conveyor frame 20a is not provided with the second side wall portion 22. However, since the side wall portions 12 and 22 also have a function as a guide for the conveyed object, the side wall portions 12 and 22 may be provided as in the first embodiment depending on the conditions required for the conveyor device.

When the motor 61 of each conveyor drive unit 110 is operated, the rotational driving force of the output shaft 61a of the motor 61 is transmitted to the first rotating shaft body 55 via the transmission mechanism 62, and further, the first rotating shaft body 55 is transmitted via the shaft 60. It is transmitted to the second rotating shaft body 58 connected to the rotating shaft body 55. On the first conveyor frame 10 side, the first roller body 67 rotates together with the first rotating shaft body 55, and on the second conveyor frame 20 side, the second roller body 72 together with the second rotating shaft body 58. Rotate.
The article W is conveyed by the rotational operation of the first and second roller bodies 67 and 72 of each conveyor drive unit 110. The rotation speeds of the first and second roller bodies 67 and 72 may be configured to operate at the same speed at a preset speed, or may be synchronously controlled by a control unit (not shown) at the same speed. You may make it work.

According to the roller conveyor device configured as described above, unlike the first embodiment in which the roller body 42 of the roller row unit 40 is rotated via the chains 75 and 76, the first and first of each conveyor drive unit 110 Since the second roller bodies 67 and 72 rotate individually to convey the article W, the conveying force of the article W can be dispersed and conveyed, the output of the motor can be reduced, and the conveyor drive unit. Can be made lighter. Further, since the transmission mechanism operated via the chains 75 and 76 is not required, the replacement work of the conveyor drive unit becomes easier.

(Third embodiment)
13 and 14 show embodiments of a roller conveyor device having a single row of rollers.
The roller conveyor device 3 of the present embodiment includes a first conveyor frame 10, a roller row unit 40 continuously arranged on the conveyor frame 10 along the longitudinal direction thereof, and a conveyor drive unit for driving the roller row unit 40. It is equipped with 120. The first conveyor frame 10 is installed in a predetermined area in the facility where the roller conveyor device is introduced via a support base (not shown).
In the following, the parts already described in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

The conveyor drive unit 120 includes a first roller unit 51 mounted side by side with the roller row unit 40 on the first conveyor frame 10, a motor 61 for rotating the first rotating shaft body 55 of the roller unit 51, and the like. It is provided with a transmission mechanism 62 that transmits the rotational driving force of the motor 61 to the first rotary shaft body 55.

The other half-split body 53b of the first roller unit 51 includes a subframe 59a, and the motor 61 is supported by a drive source mounting portion 70a attached to the subframe 59a via a speed reducer 65. The other half-split body 53b may be a single member integrally formed with the subframe 59a, or may be integrally formed by connecting separate members.

The conveyor drive unit 120 configured as described above is attached to the roller conveyor device by fixing the first roller unit 51 to the first mounting portion 11 of the conveyor frame 10.

In the first conveyor frame 10, the first roller body 67 and the drive sprocket 54 on the drive side rotate together with the first rotation shaft body 55, and are arranged along the roller row via the first transmission member 75. Drives the driven sprocket 44. When each driven sprocket 44 rotates, its rotational driving force is transmitted to each roller body 42 via each rotating shaft body 43.
The article W is supported and conveyed on the outer peripheral surfaces of the first roller body 67 and the roller body 42 of the roller row unit 40 that rotate in synchronization.

Hereinafter, in a conventional single-row roller conveyor device, a step of replacing a drive mechanism including a motor with the conveyor drive unit 120 will be described.
First, unplug the power supply cable from the existing conveyor drive unit. Next, the first upper member 13 is removed from the first side wall portion 12. Next, the chain 75 is removed from the drive sprocket 54.
A new conveyor drive unit 120 is prepared, and the first roller unit 51 is arranged on the first mounting portion 11 of the first conveyor frame 10. Then, the bolt 84 is inserted into the through hole 53i from above the unit case 53 and screwed into the T-shaped groove nut 82 arranged in the T-shaped groove 11a. As a result, the first roller unit 51 is fixed to the first mounting portion 11 of the first conveyor frame 10.
The chain 75 is hung on the drive sprocket 54. Next, the first upper member 13 is fixed to the first side wall portion 12. Finally, the plug of the power supply cable is connected to the conveyor drive unit 120.

According to the conveyor drive unit 120 configured as described above, unlike the conventional roller conveyor device, the roller drive mechanism including the motor 61 is unitized, so that it is easier than the conventional drive unit. Can be assembled. Further, the replacement work from the existing conveyor drive unit to the new conveyor drive unit 120 can be easily performed. Therefore, the time from the assembly of the roller conveyor device to the start of operation and the time for stopping the operation during the replacement work of the drive source can be shortened, and the efficiency of goods transportation in the facility where the roller conveyor device is introduced can be reduced. It can be reduced as much as possible.

By the way, in the present embodiment, it is assumed that the conveyor drive unit 120 and the roller row unit 40 are provided only on the first conveyor frame 10 in a row, but as shown in FIG. 15, the line object extending in the transport direction is used. A conveyor drive unit including a drive roller (roller body 67) and a roller row unit (not shown) are arranged on the pair of arranged conveyor frames 10 and 20, respectively, and the motors 61 of the two conveyor drive units 120 are driven to drive the conveyor frames. The article W may be conveyed by the rollers (roller body 67) and each roller body 42. By driving the motors 61 of the two conveyor drive units 120 to convey the article W, the transfer force of the roller conveyor device can be improved.

(Fourth Embodiment)
Another embodiment of a roller conveyor device having a row of rollers is shown in FIGS. 16-20.
As shown in FIG. 16, the roller conveyor device 4 of the present embodiment is continuous between the first and second conveyor frames 10 and 20 arranged in two rows and the conveyor frames 10 and 20 along the longitudinal direction of the frames. The roller row unit 140 is provided as a target, and the conveyor drive unit 150 for driving the roller row unit 140 is provided. The first and second conveyor frames 10 and 20 are installed in a predetermined area in the facility where the roller conveyor device 4 is introduced via a support base (not shown).

As shown in FIG. 17, the roller row unit 140 includes a driven roller body 141 that constitutes a roller row, a shaft body 142 that holds the driven roller body 141, and first and second driven supports that support the shaft body 142. It includes parts 143 and 144. The shaft body 142 includes a first shaft body 142a provided at one end of the driven roller body 141 and a second shaft body 142b provided at the other end of the driven roller body 141. A driven sprocket (driven rotating body) 145 that is rotatably supported together with the first shaft body 142a is fixed to one end of one shaft body 142a. The driven roller body 141 is a hollow cylindrical body, and the first shaft body 142a is connected to one end of the driven roller body 141, and the second shaft body 142b is connected to the other end. The first driven support portion 143 rotatably supports the first shaft body 142a, and the second driven support portion 144 supports the second shaft body 142b. The second shaft body 142b is fixed to the second driven support portion 144, and the driven roller body 141 is rotatably supported by the second shaft body 142b via the bearing 146.

The first driven support portion 143 is arranged in the first mounting portion 11 of the first conveyor frame 10, and is provided in the T-shaped groove 11a of the first mounting portion 11 via a bolt and a T-shaped groove nut. It is fixed. The first driven support portion 143 is provided with a bearing 143a that rotatably supports the end of the first shaft body 142a on the driven sprocket 145 side, and the end of the first shaft body 142a on the roller body 141 side. A bearing 143b that rotatably supports the portion is provided. A storage space in which the driven sprocket 145 is arranged is formed between the first driven support portion 143 and the first conveyor frame 10, and a transmission member such as a chain is arranged in this accommodation space.
The second driven support portion 144 is arranged in the second mounting portion 21 of the second conveyor frame 20, and is provided in the T-shaped groove 21a of the second mounting portion 21 via a bolt and a T-shaped groove nut. It is fixed. The second driven support portion 144 is provided with a fixing portion 144a for fixing the second shaft body 142b so as to be immovable with respect to the second driven support portion 144.

The driven sprocket 145 is fixed to one end of the first shaft body 142a and is driven by a transmission member such as a chain. In the roller row unit 140 of the present embodiment, the roller assembly composed of the driven sprocket 145, the first shaft body 142a, the driven roller body 141, the bearing 146 and the second shaft body 142b is in the transport direction of the article, that is, the roller row. A plurality of units 140 are arranged at predetermined intervals in the row direction of the units 140.

A roller drive unit 153 (described later) that is a drive side of the conveyor drive unit 150 is arranged on the first mounting portion 11 of the first conveyor frame 10, and further, following the roller drive unit 153, a roller row unit. The first driven support 143s of 140 are arranged in a row. Further, a roller support unit 154 (described later) on the driven side of the conveyor drive unit 150 is arranged on the second mounting portion 21 of the second conveyor frame 20, and further, following the roller support unit 154, a roller The second driven support 144 of the row unit 140 are arranged in a row.

One end of the first shaft body 142a is provided with one friction plate 147a constituting a friction drive mechanism, and one end of the driven roller body 141 is provided with the other friction plate 147b. There is. A spring 147c is provided between the other end of the driven roller body 141 and the second shaft body 142b. The spring 147c is introduced with an urging force that pushes the driven roller body 141 from the second driven support portion 144 toward the first driven support portion 143, and the other friction plate 147b is attached with the spring 147c. It is constantly pressed against one of the friction plates 147a by the force. As a result, a frictional force acts between both friction plates 147a and 147b, and the driven roller body 141 rotates with the rotation of the first shaft body 142a.

As shown in FIGS. 18, 19, and 20, the conveyor drive unit 150 includes a drive roller body 151 that forms a roller row together with the driven roller body 141, a shaft body 152 that holds the drive roller body 151, and a first one. A roller drive unit 153 that is mounted side by side with the roller row unit 140 on the conveyor frame 10 and rotationally drives the shaft body 152, and a roller drive unit 153 that is mounted side by side with the roller row unit 140 on the second conveyor frame 20 to drive the shaft body 152. A roller support unit 154 that supports, a base frame (housing) 155 that connects the roller drive unit 153 and the roller support unit 154, a motor (drive source) 61 that rotates the shaft body 152, and a motor 61 on the shaft body 152. The transmission mechanism 62 for transmitting the rotational driving force of the above is provided. The shaft body 152 includes a first shaft body 152a provided at one end of the drive roller body 151 and a second shaft body 152b provided at the other end of the drive roller body 151. A drive sprocket (rotating body) 158 that is rotatably supported together with the first shaft body 152a is fixed to one end of one shaft body 152a. The drive roller body 151 is also a hollow cylinder like the driven roller body 141, and the first shaft body 152a is connected to one end of the drive roller body 151 and the second shaft body 152b is connected to the other end. Is connected. The roller drive unit 153 rotatably supports the first shaft body 152a, and the roller support unit 154 supports the second shaft body 152b. The second shaft body 142b is fixed to the roller support unit 154, and the drive roller body 151 is rotatably supported by the second shaft body 152b via a bearing 156. That is, the roller drive unit 153 and the roller support unit 154 rotatably support the roller assembly including the drive sprocket 158, the first shaft body 152a, the drive roller body 151, the bearing 156, and the second shaft body 152b. ..

The roller drive unit 153 includes a substantially rectangular parallelepiped unit case (fourth casing) 153a that rotatably supports the first shaft body 152a, and is mounted on the first mounting portion 11 of the first conveyor frame 10. It is fixed in the same manner as the roller row unit 140. The roller drive unit 153 is provided with a bearing 153b that rotatably supports the end of the drive sprocket 158 of the first shaft body 152a, and rotates the end of the first shaft body 152a on the drive roller body 151 side. A bearing 153c that can support it is provided. A storage space for arranging the drive sprocket 158 is formed between the roller drive unit 153 and the first conveyor frame 10, and a transmission member such as a chain is arranged in this storage space.
The roller support unit 154 includes a substantially rectangular parallelepiped unit case (fifth casing) 154a that supports the second shaft body 152b, and a roller row unit is placed on the second mounting portion 21 of the second conveyor frame 20. It is fixed like 140. The unit case 154a is provided with a fixing portion 154b for fixing the second shaft body 152b so as to be immovable with respect to the roller support unit 154.

The transmission mechanism 62 includes a pulley 77 fixed to the output shaft 61a of the speed reducer 65, a pulley 78 fixed to the first shaft body 152a of the roller drive unit 153, and a timing belt hung between the pulleys 77 and 78. 79 and is included.

One friction plate 159a constituting the friction drive mechanism is provided at the other end of the first shaft body 152a, and the other friction plate 159b is provided at one end of the drive roller body 151. ing. A spring 159c is provided between the other end of the drive roller body 151 and the second shaft body 152b. The spring 159c is introduced with an urging force that pushes the drive roller body 151 from the roller support unit 154 toward the roller drive unit 153, and the other friction plate 15 is one of the friction plates due to the urging force of the spring 159c. It is constantly pressed against 159a. As a result, a frictional force acts between both friction plates 159a and 159b, and the drive roller body 151 rotates with the rotation of the first shaft body 152a.

Even if the article W conveyed by the driven roller body 141 and the driving roller body 151 stops on the conveyor for some reason, the friction driving mechanism described above makes it possible to use the first and second articles W with respect to the driven roller body 141. The shaft bodies 142a and 142b idle, and the first and second shaft bodies 142a and 142b idle with respect to the drive roller body 151.

In the present embodiment, when the motor 61 of the conveyor drive unit 150 is operated, the rotational driving force of the output shaft 61a is transmitted to the first shaft body 152a via the rotational transmission mechanism of the transmission mechanism 62, and the drive roller body 151 Rotate. At the same time, the first roller body 67 and the drive sprocket 54 on the drive side rotate together with the first rotation shaft body 55, and are arranged along the roller row unit 140 via the first transmission member (for example, a chain) 75. Drives the driven sprocket 145. When each driven sprocket 145 rotates, the rotational driving force is transmitted to the first shaft body 142a, and each driven roller body 141 rotates.
The article W is supported and conveyed on the outer peripheral surfaces of the driven roller body 151 and the driven roller body 141 that rotate synchronously.

According to the conveyor drive unit 150 configured as described above, unlike the conventional roller conveyor device, the roller drive mechanism including the motor 61 is unitized, so that it is easier than the conventional drive unit. Can be assembled. Further, the replacement work from the existing conveyor drive unit to the new conveyor drive unit 120 can be easily performed. Therefore, the time from the assembly of the roller conveyor device to the start of operation and the time for stopping the operation during the replacement work of the drive source can be shortened, and the efficiency of goods transportation in the facility where the roller conveyor device is introduced can be reduced. It can be reduced as much as possible.

By the way, in the present embodiment, the second shaft body 142b in the roller row unit 140 is fixed to the second driven support portion 144, and the driven roller body 141 is attached to the second shaft body 142b via the bearing 146. Although it is rotatably supported, the second shaft body 142b may be rotatably supported by the second driven support portion 144. In that case, it is not necessary to provide a bearing between the driven roller body 141 and the second shaft body 142b.
Similarly, in the present embodiment, the shaft body 152 holding the drive roller body 151 includes the first and second shaft bodies 152a and 152b, and the second shaft body 152b is attached to the roller support unit 154 by the fixing portion 154b. Although it is fixed so as to be immovable, the second shaft body 152b may be rotatably supported by the roller support unit 154. In that case, it is not necessary to provide a bearing between the drive roller body 151 and the second shaft body 152b, and the spring 159c is provided between the other end of the drive roller body 151 and the roller support unit 154.

Further, in the present embodiment, the shaft body 142 holding the driven roller body 141 includes the first and second shaft bodies 142a and 142b, and these first and second shaft bodies 142a and 142b are the driven roller bodies 141. Although the shaft body 142 is connected via the above, the shaft body 142 may be made into one component without being divided, and the driven roller body 141 may be held after being inserted into the hollow driven roller body 141. In that case, the other end of the shaft body 142 corresponding to the second shaft body 142b is rotatably supported by the second driven support portion 144.
Similarly, in the present embodiment, the shaft body 152 holding the drive roller body 151 includes the first and second shaft bodies 152a and 152b, but the shaft body 152 is not divided into one component and is hollow. The drive roller body 151 may be held after being inserted into the drive roller body 151. In that case, the other end of the shaft body 152 corresponding to the second shaft body 152b is rotatably supported by the roller support unit 154.

The first to fourth embodiments of the conveyor drive unit and the roller conveyor device according to the present invention and their modifications have been described above. However, in carrying out the invention, the conveyor drive shown in these embodiments has been described. A roller conveyor device may be configured by combining a plurality of units and roller row units. For example, the conveyor drive unit 120 shown in the third embodiment is installed on the first conveyor frame 10 and combined with the roller row unit 40, and another conveyor drive unit 120 is placed on the second conveyor frame 20. It may be installed and combined with the roller row unit 40 to form a roller conveyor device for driving two rows of rollers (see FIG. 15). Further, the roller conveyor device 1 shown in the first embodiment and the roller conveyor device 3 including the conveyor drive unit 120 and the roller row unit 40 shown in the third embodiment are combined to form a three-row roller row. A roller conveyor device may be configured which has two rows of rollers and drives two rows of rollers.

The present invention relates to a conveyor drive unit that drives a row of rollers and a roller conveyor device using the same. According to the present invention, the man-hours and work time for mounting the drive mechanism on the roller conveyor device are reduced, and the efficiency of the replacement work is improved. As a result, the time for stopping the operation of the roller conveyor device can be shortened, and the decrease in the efficiency of article transportation in the facility where the roller conveyor device is introduced can be minimized.

Claims (20)

A roller conveyor device having two rows of rollers, one on the driving side and the other on the driven side, is provided, and a rotational driving force is applied to a roller body constituting the first roller row on the driving side, and the rotation is performed. A conveyor drive unit that transmits the driving force to the roller bodies that form the second roller row on the driven side.
A first rotating shaft body having a first roller body constituting the first roller row, and a first rotating shaft body.
The first casing that pivotally supports the first rotating shaft body and
A first roller unit provided on one side of the first rotating shaft body, including a first rotating body that rotates together with the first rotating shaft body and drives the first roller body. ,
A second rotating shaft body having a second roller body constituting the second roller row,
A second casing that pivotally supports the second rotating shaft body, and
A second roller unit provided on one side of the second rotating shaft body, including a second rotating body that rotates together with the second rotating shaft body and drives the second roller body. ,
A shaft that transmits the rotation of the first rotating shaft body to the second rotating shaft body, and
The drive source that supplies the rotational driving force and
A transmission mechanism provided between the first and second roller units and transmitting the rotational driving force of the driving source to the first rotating shaft body or the shaft.
A conveyor drive unit that supports the shaft, the drive source, and the transmission mechanism, and includes a first roller unit and a housing connected to the second roller unit. The conveyor drive unit according to claim 1, wherein the drive source has an output shaft provided under the shaft in parallel with the shaft. The transmission mechanism has a rotation transmission mechanism that connects the output shaft of the drive source and the first rotation shaft body.
The rotational driving force of the driving source is transmitted to the first rotating shaft body via the rotation transmitting mechanism, and the rotational driving force transmitted to the first rotating shaft body is transmitted to the first rotating shaft body via the shaft. The conveyor drive unit according to claim 2, which is transmitted to the second rotating shaft body. The conveyor drive unit according to any one of claims 1 to 3, wherein each of the first roller unit and the second roller unit includes a housing connecting portion to which the housing is connected. The first roller unit is provided with the first rotating body on the side opposite to the second roller unit with respect to the first rotating shaft body.
Any one of claims 1 to 4, wherein the second roller unit is provided with the second rotating body on the side opposite to the first roller unit with respect to the second rotating shaft body. Conveyor drive unit described in. Further provided with a cover covering the housing
The conveyor drive unit according to any one of claims 1 to 5, wherein the transmission mechanism is housed in the cover. The control unit of the drive source and
The conveyor drive unit according to any one of claims 1 to 6, further comprising a power supply unit connected to the control unit and supplying a power source for driving the drive source. The first roller unit further includes a first auxiliary roller provided side by side in the extending direction of the first roller row with respect to the first roller body.
The second roller unit is any one of claims 1 to 7, further comprising a second auxiliary roller provided side by side in the extending direction of the second roller row with respect to the second roller body. The conveyor drive unit according to one item. Two rows of roller row units, one on the driving side and the other on the driven side,
A roller conveyor device including the conveyor drive unit according to any one of claims 1 to 8, which is provided adjacent to the two rows of the roller row units in the extending direction.
The roller row unit is
A third rotating shaft body having a third roller body,
A third casing that pivotally supports the third rotating shaft body,
A third rotating body provided on one side of the third rotating shaft body and rotating together with the third rotating shaft body is included.
A first transmission unit that transmits the rotation of the first rotating body included in the first roller unit to the third rotating body included in one of the two rows of roller units.
A roller conveyor further including a second transmission unit that transmits the rotation of the second rotating body included in the second roller unit to the third rotating body included in the other of the two rows of roller units. apparatus. A roller conveyor device having two rows of rollers, one on the driving side and the other on the driven side, is provided, and a rotational driving force is applied to the roller bodies constituting the roller row on the driving side, and the rotational driving force is applied. A conveyor drive unit that transmits to the roller bodies constituting the driven roller row.
A first rotating shaft body having a first roller body constituting the first roller row, and a first rotating shaft body.
A first roller unit including a first casing that pivotally supports the first rotating shaft body, and a first roller unit.
A second rotating shaft body having a second roller body constituting the second roller row,
A second roller unit including a second casing that pivotally supports the second rotating shaft body, and a second roller unit.
A shaft that transmits the rotation of the first rotating shaft body to the second rotating shaft body, and
The drive source that supplies the rotational driving force and
A transmission mechanism provided between the first and second roller units and transmitting the rotational driving force of the driving source to the shaft or the first rotating shaft body.
A conveyor drive unit that supports the shaft, the drive source, and the transmission mechanism, and includes a first roller unit and a housing connected to the second roller unit. A first conveyor frame on the driving side and a second conveyor frame on the driven side, which define two roller rows, one on the driving side and the other on the driven side.
A roller row unit mounted on the first conveyor frame and the second conveyor frame, and
A roller conveyor device including the plurality of conveyor drive units according to claim 10.
The first conveyor frame comprises a first engaging portion with which the first roller unit of the conveyor driving unit is engaged.
The second conveyor frame includes a second engaging portion with which the second roller unit of the conveyor driving unit is engaged.
The plurality of conveyor drive units engage the first roller unit with the first engaging portion, the second roller unit with the second engaging portion, and the roller row. A roller conveyor device installed adjacent to the unit in the extending direction. A conveyor drive unit provided in a roller conveyor device having a row of rollers, which applies a rotational driving force to the roller bodies constituting the roller row and transmits the rotational driving force to the roller bodies on the driven side of the roller row. And
The roller body constituting the roller row and the roller body
A shaft body that holds the roller body and
A casing that rotatably supports the roller body held by the shaft body, and
Provided on the shaft body
A drive roller unit including a rotating body for driving the shaft body holding the roller body, and a drive roller unit.
The drive source that supplies the rotational driving force and
A conveyor drive unit including a transmission mechanism for transmitting the rotational driving force of the driving source to the shaft body. 12. The casing comprises a first casing that rotatably supports one end of the shaft and a second casing that rotatably supports the other end of the shaft. The described conveyor drive unit. The shaft body includes a first shaft body provided at one end of the roller body and a second shaft body provided at the other end of the roller body.
The casing includes a first casing that rotatably supports the first shaft body and a second casing that supports the second shaft body, and the roller body is the second shaft body. The conveyor drive unit according to claim 12, which is rotatable with respect to the casing. The shaft body includes a first shaft body provided at one end of the roller body and a second shaft body provided at the other end of the roller body.
The conveyor drive according to claim 12, wherein the casing includes a first casing that rotatably supports the first shaft body and a second casing that rotatably supports the second shaft body. unit. The conveyor drive unit according to any one of claims 12 to 15, further comprising a friction mechanism that imparts a friction function to the roller body. A driven roller row unit with a single row of rollers and
A roller conveyor device including the conveyor drive unit according to any one of claims 12 to 16, which is provided adjacent to the roller row in the extending direction.
The driven roller row unit is
The driven roller body constituting the roller row and
A driven shaft body that holds the driven roller body and
A driven support portion that supports the driven shaft body and
Includes a driven rotating body for driving the driven shaft body that holds the driven roller body.
A roller conveyor device further comprising a transmission unit that transmits the rotation of the rotating body included in the driving roller unit to the driven rotating body included in the one-row roller row unit. The driven support includes a third casing that rotatably supports one end of the driven shaft and a fourth casing that rotatably supports the other end of the driven shaft. The roller conveyor device according to claim 17. The driven shaft body includes a first driven shaft body provided at one end of the driven roller body and a second driven shaft body provided at the other end of the driven roller body.
The driven support portion includes a third casing that rotatably supports the first driven shaft body and a fourth casing that supports the second driven shaft body, and the driven roller body is the driven roller body. The roller conveyor device according to claim 17, which is rotatable with respect to a second driven shaft body. The driven shaft body includes a first driven shaft body provided at one end of the driven roller body and a second driven shaft body provided at the other end of the roller body.
17. The driven support portion includes a first casing that rotatably supports the first driven shaft body and a second casing that rotatably supports the second driven shaft body. The roller casing device described.

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