JP2009209998A - Belt driven working machine - Google Patents

Abstract

A belt-driven work machine is provided that includes an adjustment mechanism that enables tension adjustment of a pulley belt while maintaining the shaft cores of both driving and driven pulleys in parallel.
A reference wall is erected in a direction perpendicular to a frame. A plurality of fixing pieces 32 to 34 having contact surfaces orthogonal to the input shaft 31 are provided at the casing end of the work machine body 30, and one of these 32 is a bolt hole 35 provided in the reference wall 51. The fulcrum side fixing bolts 38a inserted into the reference wall 51 are attached, and the fixing bolts 38b, 38c inserted into the elongated hole holes 36, 37 provided in the reference wall 51 are attached to the other fixing pieces 33, 34. When the fixing bolts 38a are loosened, the working machine main body 30 can be rotated with the fixing bolt 38a as a fulcrum, and when the fixing bolts 38a to 38b are tightened, the working machine main body 30 is moved to the reference wall 51 at a predetermined rotating position. It was possible to fix to.
[Selection] Figure 3

Description

  The present invention relates to a belt-driven work machine, and more particularly, between a drive pulley attached to an output shaft of a drive device such as a motor and a driven pulley attached to an input shaft of a work machine body such as a compressor body. The present invention relates to a belt-driven work machine that is capable of driving a work machine body by spanning a belt.

  As an example of a belt-driven working machine having a power transmission mechanism composed of a driving pulley, a driven pulley, and a pulley belt spanned between the two pulleys, the driving device is a motor, and the working machine body is a compressor (main body) A configuration example of a known belt-driven compressor is shown in FIGS.

  The belt-driven compressor 1 shown in FIGS. 6 and 7 mounts and fixes a fixed base 56 on a frame 52 on which a motor 10 that is a driving device is placed so as to straddle the motor 10. The compressor main body 30 is mounted on the fixed mount 56 (see FIG. 7).

  Then, the drive pulley 6 is attached to the output shaft 11 of the motor 10 and the driven pulley 7 is attached to the input shaft 31 provided in the compressor body 30, and the common pulley belt 8 is hung on both the drive and driven pulleys 6, 7. By passing, the rotational driving force output from the motor 10 is transmitted to the input shaft 31 of the compressor body 30 via the drive pulley 6, the pulley belt 8, and the driven pulley 7 to drive the compressor body 30. It is configured to be able to.

  In the belt-driven compressor 1 configured as described above, when the pulley belt 8 is loosened or loosened, slipping occurs between the pulleys 6 and 7 and the pulley belt 8, and the output of the motor 10 Not all is transmitted to the compressor body 30 and power loss occurs, and the pulley belt 8 slides on the pulleys 6 and 7 to accelerate the wear of the pulley belt 8 and the pulleys 6 and 7, and abnormal noise is generated or abnormal. Because vibration occurs, it is necessary to adjust the tension of the pulley belt 8, and it is necessary to reduce the distance between the pulleys 6 and 7 and loosen the pulley belt 8 when the pulley belt 8 is replaced. Therefore, in such a belt-driven compressor 1, the distance between the driven pulley 7 attached to the input shaft 31 of the compressor body 30 and the drive pulley 6 attached to the output shaft 11 of the motor 10 is determined. Adjustment mechanism is provided which forms the change.

  As such an adjustment mechanism, in the belt-driven compressor 1 shown in FIGS. 6 and 7, a movable pedestal 57 that can move in the height direction on the fixed pedestal 56 is further provided on the fixed pedestal 56 described above. The compressor body 30 described above is placed on the movable frame 57.

  In order to make the movable frame 57 movable on the fixed frame 56, one side 57 a of the movable frame 57 parallel to the axial direction of the input shaft 31 of the compressor body 30 is connected via the hinge mechanism 58. The movable frame 57 is fixed to the fixed frame 56 and attached to the fixed frame 56 so as to be rotatable. A jack bolt 21 ′ protruding upward from the upper surface of the fixed frame 56 is attached to the movable frame 57. The movable frame 57 is thickened between a pair of jack nuts 23 ′ and 23 ′ inserted into a bolt hole (not shown) formed in the vicinity of one side 57 b of the end side and screwed into the jack bolt 21 ′. By changing the inclination of the movable frame 57 by changing the screwing position of the jack nuts 23 ', 23' in the axial direction of the jack bolt 21 '. Narrowing the distance between the pulleys 6, 7, or is configured so that it can be expanded (see FIG. 1 of Patent Document 1).

Prior art document information of the present invention includes the following.
Japanese Utility Model Publication No. 60-164692

  As shown in FIGS. 6 and 7, in the belt drive type compressor 1 having the compressor body 30 mounted on the movable frame 57, the jack nut 23 ′ is screwed in the axial direction of the jack bolt 21 ′. By moving the position, the movable pedestal 57 can be rotated around the support shaft of the hinge mechanism 58, whereby the distance between the drive pulley 6 and the driven pulley 7 can be made variable, so that the pulley belt 8 The tension adjustment and the attachment / detachment of the pulley belt 8 can be performed.

  However, in such a belt-driven compressor 1, it is not sufficient to adjust the tension of the pulley belt 8 by adjusting the distance between the pulleys 6 and 7 in order to perform proper power transmission. The rotation shafts of the drive and driven pulleys 6 and 7, and hence the output shaft 11 of the motor 10 and the input shaft 31 of the compressor body 30 are arranged in parallel, and the pulley belt 8 is connected to both the output shaft 11 and the input shaft 31. The relative positions of the pulleys 6 and 7 are adjusted so that they are stretched in a direction orthogonal to the shaft center (for example, when the pulleys 6 and 7 have the same width, the end surfaces of the pulleys 6 and 7 are on the same plane. If this condition is not satisfied, even if the tension of the pulley belt 8 is appropriately adjusted, the pulley belt 8 is twisted and the pulley 6, Drop off from 7 Presents a risk of breakage, uneven wear of the pulley belt 8 and the pulley 6, there is a case where abnormal noise, abnormal vibrations occur.

  However, in the belt-driven compressor 1 shown in FIGS. 6 and 7, the tension of the pulley belt 8 is adjusted while maintaining the output viewed from the side (see FIG. 6) and the input shafts 11 and 31 in parallel. For this purpose, the screwing position of the jack nut 23 ′ is the same position for any of the jack bolts 21 ′, 21 ′ provided along the one side 57 b on the free end side of the movable frame 57. If there is a shift in the screwing position of the jack nut 23 'between the jack bolts 21' and 21 ', the input shaft 31 provided in the compressor main body 30 as shown in FIG. Inclination will occur in the axis.

  Further, the output in plan view, the parallel adjustment of the input shafts 11 and 31, and the adjustment of the end face positions of the pulleys 6 and 7 are formed by, for example, forming bolt holes 13 provided in the leg portions 12 of the motor 10 as long holes. The adjustment is performed by loosening the bolts 15 that fix the frame 52 and the motor 10 and finely adjusting the mounting position of the motor 10 and then fixing the bolts 15 with the bolts 15 again.

  These adjustments are made, for example, when the widths of the drive and driven pulleys 6 and 7 are the same, and a ruler is applied to the end surface of either the drive or driven pulley, and the end surface of the other pulley is not spaced from this ruler. Adjusting the pulley belt 8 while adjusting the tension of the pulley belt 8, adjusting the output shaft 11 and the input shaft 31 in parallel and adjusting the position of the end faces of the pulleys 6 and 7 are combined with the above-mentioned operations. The operation of adjusting while combining them is extremely complicated and difficult.

  For example, even if the tension of the pulley belt 8 is optimally adjusted in the state shown in FIG. 6, in order to adjust the output shaft 11 and the input shaft 31 in parallel in this state, the jack nut 23 on the left side in FIG. If 'is moved upward in the figure, the distance between the drive and driven pulleys 6 and 7 is slightly reduced by this adjustment even if the output and input shafts 11 and 31 approach each other in parallel. The pulley belt 8 is loosened. Therefore, after the parallel adjustment of both the output and input shafts 11 and 31, it is necessary to adjust the tension of the pulley belt 8 again. The parallel adjustment of the output and input shafts 11 and 31 and the tension of the pulley belt 8 are necessary. It is extremely difficult to make adjustments simultaneously.

  For example, in the configuration shown in FIG. 6, when the motor 10 is arranged slightly offset in the left-right direction of the paper, even if the output shaft 11 and the input shaft 31 are arranged in parallel. The end faces of the pulleys 5 and 6 are not arranged on the same plane. In this case, for example, the motor mounting position is adjusted so that the driving pulley 6 is at a predetermined position with the driven pulley 7 as a reference. After adjusting the mounting position of the motor 10, the pulley belt 8 is adjusted so that the end surface of the driven pulley 7 comes into contact with this ruler without any gaps with reference to the ruler applied to the end surface of the driving pulley 6 again. It is necessary to perform tension adjustment and the like, and it is necessary to repeat such work endlessly.

  As described above, in the belt-driven compressor 1 having the adjusting mechanism shown in FIGS. 6 and 7, a great amount of time and labor are spent on the adjustment work, and even if time and labor are spent, accurate adjustment is always performed. However, the results of the adjustment are not necessarily varied, and the adjustment results vary greatly depending on the skill of the operator who performs the adjustment.

  Accordingly, the present invention has been made to solve the above-mentioned drawbacks of the prior art, and it is possible to adjust the parallel rotation axes of the driving and driven pulleys with a comparatively simple configuration, and to carry out the pulley belt. To provide a belt-driven work machine equipped with an adjustment mechanism that can easily adjust the distance between both pulleys when adjusting the tension of the belt while maintaining the state where the rotation axes of both pulleys are parallel to each other. With the goal.

In order to achieve the above object, a belt-driven work machine 1 according to the present invention includes a drive pulley 6 provided on an output shaft 11 of a drive device 10 such as a motor, and an input shaft 31 of a work machine main body 30 such as a compressor body. In the belt-driven work machine 1 in which the pulley belt 8 is stretched between the driven pulleys 7 provided to the work machine body 30 so that the output of the drive device 10 can be input to the work machine body 30.
On the frame 52, a frame 50 is constructed by standing a reference wall 51 that forms a vertical reference surface 51a in which at least one surface defines a vertical surface with respect to the frame 52. In addition, the driving device 10 is mounted such that the axial direction of the output shaft 11 is orthogonal to the vertical reference surface 51a of the reference wall 51,
The casing of the working machine body 30 is provided with fixed pieces 32 to 34 having planes perpendicular to the axial direction of the input shaft 31, and the planes of the fixed pieces 32 to 34 are provided on the reference wall 51. The fixed pieces 32 to 34 are pivotally attached to the reference wall 51 (in the example of FIG. 3 by the fulcrum side fixing bolts 38a) while being in contact with the vertical reference plane 51a, and the axial attachment position is centered. The working machine body 30 can be rotated, and the distance between the drive pulley 6 and the driven pulley 7 can be changed by the rotation of the working machine body 30 (Claim 1).

  In the belt-driven work machine 1 having the above-described configuration, the driving device 10 is placed on the frame 52 on the vertical reference plane 51 a side of the reference wall 51 and is provided from an output shaft opening 53 provided in the reference wall 51. The output shaft 11 is projected on the other surface 51b side of the reference wall 51, and the fixing pieces 32 to 34 are provided on the casing end portion on the projecting side of the input shaft 31 of the work machine body 30, The work machine body 30 is attached to the vertical reference surface 51a of the reference wall 51, and the other surface 51b of the reference wall 51 facing the vertical reference surface 51a through the input shaft opening 54 provided in the reference wall 51. The input shaft 31 may be protruded to the side, and the drive pulley 6 and the driven pulley 7 may be disposed on the other surface 51b side of the reference wall 51 (Claim 2).

In the configuration of the belt-driven work machine having the above-described structure, a plurality of the fixed pieces 32 to 34 are further provided in the casing of the work machine main body 30, and the axis of the input shaft 31 is provided on any of the flat surfaces of the fixed pieces 32 to 34. On the same plane perpendicular to the direction,
One of the fixed pieces 32 to 34 (fulcrum side fixed piece 32) is axially attached to the reference wall 51 (in the embodiment, axially attached by a fulcrum side fixing bolt 38a), and another fixed piece (movable side fixed). It is possible to provide variable fixing means for fixing the pieces 33, 34) to the reference wall 51 at an arbitrary position on the movement trajectory of the other fixed pieces 33, 34 centering on the axis attachment position. ).

  As the above-mentioned variable fixing means, there are provided long hole-like bolt holes 36 and 37 formed in the reference wall with the arc direction centering on the axial position as the length direction, and the long hole-like shape. It can be constituted by fixed bolts (movable side solid bolts 38b, 38c) which are inserted into the bolt holes 36, 37 and fix the other fixed pieces 33, 34 to the reference wall 51 (Claim 4).

  Furthermore, it is preferable that the belt-driven work machine having the above-described configuration is provided with a rotation mechanism 20 that rotates the work machine main body 30 about the shaft attachment position (Claim 5).

  Such a rotating mechanism 20 has one end protruding from the vertical reference plane of the reference wall 51 and the jack bolt 21 connected to the work machine main body 30 via, for example, one of the movable side fixed pieces 33 and 34. The bracket 22 is formed with a bolt hole into which the other end of the jack bolt 21 is inserted, and is screwed into the other end of the jack bolt 21 protruding through the bolt hole of the bracket 22. The work implement main body 30 may be configured to be rotatable by adjusting the screwing position of the jack nut 23 with respect to the length direction of the jack bolt 21 (Claim 6).

  In the belt-driven work machine 1 having the above-described configuration, as shown in FIG. 4, the positioning piece 16 provided with a plane perpendicular to the axial direction of the output shaft 11 in the casing of the driving device 10. In addition, the driving device 10 may be placed on the frame 52 in a state where the flat surface of the positioning piece 16 is in contact with the vertical reference surface 51a of the reference wall 51 (Claim 7). .

  As described above, in the configuration in which the positioning piece 16 is provided in the driving device 10, as shown in FIG. 5, a fixing means such as a bolt 17 is provided to fix the positioning piece 16 to the reference wall 51. (Claim 8).

  In the case where such a positioning piece 16 is provided, the drive pulley 6 and the driven pulley 7 are formed to have the same width as shown in FIG. It is preferable that the interval δa between the end surfaces of the pulley 6 and the interval δb between the flat surfaces of the fixed pieces 32 to 34 and the end surfaces of the driven pulley 7 are formed to be the same.

  With the configuration of the present invention described above, the following remarkable effects can be obtained in the belt-driven work machine 1 of the present invention.

  A reference wall 51 having a vertical reference surface 51a, at least one of which forms a vertical surface with respect to the frame 52, is erected on the frame 52 to constitute a pedestal 50, and the input shaft is attached to the casing of the work implement body 30. Fixed pieces 32 to 34 having planes perpendicular to the axial direction of 31 are provided, and the fixed pieces 32 to 34 are in contact with the vertical reference plane 51 a of the reference wall 51 while the planes of the fixed pieces 32 to 34 are in contact with each other. Since the working machine main body 30 can be pivoted by pivotally attaching 32 to 34 to the reference wall 51, the working machine main body is brought into contact with the plane of the fixed pieces 32 to 34 and the vertical reference surface 51 a of the reference wall 51. The 30 input shafts 31 could always be arranged in the orthogonal direction with respect to the vertical reference plane 51a of the reference wall 51 without any special adjustment.

  As a result, the output shaft 11 of the driving device 10 placed on the frame 52 so that the output shaft 11 is orthogonal to the vertical reference surface 51a of the reference wall 51, and the input shaft of the work implement body 30. The axis direction is always kept parallel, and the operator who adjusts the tension of the pulley belt 8 only needs to pay attention to the tension of the pulley belt 8 during the adjustment, and corrects the inclination of the input shaft 31. The work to do became unnecessary.

  Further, since the output shafts 11 and 31 which are the rotation shafts of the pulleys 6 and 7 are maintained in a parallel state, the pulley belt 8 is not twisted, and the pulley belt 8 falls off due to such twisting. And breakage, uneven wear of the pulley belt 8 and the pulleys 6 and 7, abnormal noise and abnormal vibration can be suitably prevented.

  The drive device 10 and the work machine main body 30 are arranged on the vertical reference plane 51a side of the reference wall 51, and the drive provided on the output shaft 11 through the output shaft opening 53 and the input shaft opening 54 provided on the reference wall 51. In the configuration in which the driven pulley 7 provided on the pulley 6 and the input shaft 31 is disposed on the side of the other surface 51b of the reference wall 51, the work machine body 30 can be easily attached to the reference wall 51 and driven, When the end surfaces of the driven pulleys 6 and 7 are aligned, the distance from the reference wall 51 can be adjusted as a reference.

  Furthermore, in the configuration in which a plurality of the fixing pieces 32 to 34 are provided in the casing of the work machine main body 30, the flat surfaces of the fixing pieces 32 to 34 contact the vertical reference surface 51 a of the reference wall 51 at a plurality of locations. Therefore, the input shaft 31 can be more accurately arranged in the direction perpendicular to the vertical reference plane 51a of the reference wall 51, and the fixing piece (fulcrum side fixing piece 32) pivotally attached by the fulcrum side fixing bolt 38a. ) As well as the other fixed pieces (movable side fixed pieces 33, 34) are fixed to the reference wall 51 by the variable fixing means, and are fixed to the reference wall 51 at a plurality of locations. The work machine body 30 could be firmly attached.

  The movable fixing means is connected to the elongated hole-shaped bolt holes 36, 37 formed in the reference wall 51 with the arc direction centered on the axially attached position as the length direction, and the elongated hole-shaped bolt holes 36, 37. The structure can be made simple by being constituted by the fixing bolts (movable-side solid bolts 38b, 38c) that are inserted and fix the other fixing pieces 33, 34 to the reference wall 51. In addition, the other fixing pieces 33 and 34 can be securely fixed to the reference wall 51 at an arbitrary rotational position of the work machine body 30 by tightening the fixing bolts (movable-side solid bolts 38b and 38c) and loosen them. Thus, each operation of rotating and fixing the work machine body 30 can be easily performed, such as enabling the work machine body 30 to be turned.

  In the belt-driven work machine 1 having the above-described configuration, if the rotation mechanism 20 that rotates the work machine body 30 is provided, the rotation of the work machine body 30 is facilitated by the rotation mechanism 20. Could be done.

  In the belt-driven work machine 1 including the jack bolt 21, the bracket 22, and the jack nut 23 configured as described above as the rotation mechanism 20, the rotation position of the work machine main body 30 is rotated by the rotation of the jack nut 23. The work implement main body 30 could be fixed at an appropriate rotational position even before the fixing bolts (movable side fixing bolts 38b, 38c) were tightened.

  In the configuration in which the positioning piece 16 having a plane perpendicular to the axial direction of the output shaft 11 is provided in the casing of the driving device 10, the plane of the positioning piece 16 is the vertical reference of the reference wall 51. By placing the driving device 10 on the frame 52 so as to be in contact with the surface 51a, the output shaft 11 can be accurately arranged so as to be orthogonal to the vertical reference surface 51a of the reference wall 51. As a result, the parallel adjustment between the input shafts 11 and 31 becomes unnecessary.

  When the positioning piece 16 is fixed to the reference wall 51, for example, a fixing means such as a bolt or a nut is provided, the positioning piece 16 is fixed in a state of being in contact with the vertical reference surface 51a of the reference wall 51. For example, it is possible to reliably prevent the occurrence of a displacement in the axial direction of the output shaft 11 due to a positional displacement or the like when the driving device is fixed to the frame 52.

  The driving pulley 6 and the driven pulley 7 are formed to have the same width, the interval δa between the flat surface of the positioning piece 16 and the end surface of the driving pulley 6, the flat surface of the fixed pieces 32 to 34, and the driven pulley. 7 with the same interval δb between the end faces, the plane of the fixing pieces 32 to 34 and the plane of the positioning piece 16 are both brought into contact with the vertical reference plane 51a of the reference wall and attached. The end surfaces of the driving pulley 6 and the driven pulley 7 can be aligned without any special adjustment. As a result, it was possible to reliably prevent the pulley belt from being twisted.

  Next, embodiments of the present invention will be described below with reference to the accompanying drawings. In the following description, the belt-driven work machine of the present invention will be described as having a compressor main body as a work machine main body and a motor as a drive device. The present invention is not limited to a belt-driven work machine having a machine body, and can be applied to various work machines that operate by inputting rotational driving force, such as a belt-driven work machine having a pump. The drive device can be applied to a belt-driven work machine equipped with an engine in addition to a motor.

1 to 5 is a belt-driven compressor. The belt-driven compressor 1 includes a motor 10 that is a drive device that constitutes the compressor 10 and a compressor body 30 that is a work machine body. A stand 50 for mounting is provided.

  As shown in FIG. 1, the gantry includes a frame 52 on which the motor 10 is placed, and a reference wall 51 erected on the frame 52 to which the compressor body 30 is attached.

  The reference wall 51 has a vertical reference surface 51a (see FIG. 2) composed of at least one surface that forms a vertical surface with respect to the frame 52, and the output of the motor 10 placed on the frame 52. The input shaft into which the output shaft opening 53 into which the shaft 11 is inserted and the input shaft 31 of the compressor main body 30 attached to the reference wall 51 are respectively inserted perpendicularly to the vertical reference surface 51a. An opening 54 is provided. (See FIGS. 1 and 3).

  In the illustrated embodiment, the output shaft opening 53 and the input shaft opening 54 are configured such that the drive shaft 6 and the driven pulley 7 are attached to the output shaft 11 and the input shaft 31, respectively. The shaft 11 is formed in a size that can be inserted into the openings 53 and 54, and the output shaft opening 53 is inserted into the opening when the compressor body 30 is rotated. The part is formed in a size that does not interfere with the opening edge.

  Further, the driving pulley 6 and the driven pulley 7 have their rotation trajectory planes parallel to the vertical reference plane 51a, in other words, perpendicular to the axial directions of the input shaft 31 and the output shaft 11. It is installed to make.

  However, if the output shaft opening 53 and the input shaft opening 54 are sized so that the output shaft 11 and the input shaft 31 can be inserted, the output shaft opening 53 and the input shaft opening 54 are formed to have a smaller diameter than the diameters of the drive pulley 6 and the driven pulley 7. In this case, when the input shaft 31 and the output shaft 11 are inserted into and removed from the openings 53 and 54, the drive pulley 6 and the driven pulley 7 need to be attached and detached.

  In the illustrated embodiment, in order to improve the strength of the reference wall 51 and to facilitate the vertical arrangement of the reference wall 51 with respect to the frame 52, the side wall 55 is continuous with two sides forming both ends of the reference wall 51 in the width direction. , 55 (see FIG. 1), and the reference wall 51 and the side walls 55, 55 are formed into a generally U-shaped shape in plan view as a whole, and the bottom side of the reference wall 51, both side walls 55, The bottom side of 55 is attached on the frame 52 by, for example, welding or bolting.

  On the gantry 50 configured as described above, the motor 10 as a driving device is mounted and fixed on the frame 52, and the working body is compressed with respect to the vertical reference plane 51a of the reference wall 51. The machine main body 30 is attached.

Motor mounting structure As shown in FIGS. 1 and 2, the motor 10 is mounted on the frame 52 on the vertical reference surface 51a side (the side surrounded by the reference wall 51 and the side wall 55) of the reference wall 51. The output shaft 11 of the motor 10 is placed on the frame 52 so as to protrude toward the other surface 51 b of the reference wall 51 through an output shaft opening 53 formed in the reference wall 51.

  The casing of the motor 10 is provided with a leg portion 12 so as to be mounted on the frame 52, and the leg portion 12 is prevented from moving the motor 10 on the frame 52. A bolt hole 13 is formed to fix the tip of the bolt 15 inserted into the bolt hole 13 to a screw formed in the frame 52 corresponding to the position of the bolt hole 13 in the leg 12. The motor 10 can be fixed on the frame 52 by being screwed into a hole (not shown).

  The above-described bolt hole 13 provided in the leg portion 12 of the motor 10 has a size having a slight margin with respect to the diameter of the bolt 15 inserted therein, or is formed as a long hole, so that Even when the bolt 15 is screwed into a screw hole (not shown) of the frame 52, the motor 10 can be moved to finely adjust the mounting position before the bolt 15 is completely tightened. Preferably, the motor 10 is framed so that the output shaft 11 of the motor 10 is perpendicular to the vertical reference surface 51a of the reference wall 51 while finely adjusting the mounting position of the motor 10 in this way. Secure on 52.

  When the motor 10 is fixed on the frame 52 as described above, for example, as shown in FIG. 4, a plane that makes the vertical reference surface 51 a of the reference wall 51 contact the casing end portion of the motor 10 on the projecting side of the output shaft 11, In the configuration in which the positioning piece 16 formed so as to be orthogonal to the axial direction of the output shaft 11 is provided, the plane of the positioning piece 16 is brought into contact with the vertical reference surface 51 a of the reference wall 51. , The axial direction of the output shaft 11 can be easily adjusted so as to be arranged in a direction perpendicular to the vertical reference plane 51 a of the reference wall 51.

  In the illustrated embodiment, the positioning piece 16 is formed as an annular flange in which the casing end portion of the motor 10 is protruded in the outer circumferential direction over the entire circumference, but the shape of the positioning piece 16 is as follows. For example, a plurality of positioning pieces 16 project from the casing end of the motor 10, and the contact surfaces of the positioning pieces 16 with respect to the reference wall 51 are perpendicular to the axial direction of the output shaft 11. It is good also as what forms so that it may arrange | position on the common plane formed.

  For example, as shown in FIG. 5, the positioning piece 16 is formed with a bolt hole (not shown) formed as a screw hole or the like at a predetermined position of the positioning piece 16 and at the portion where the positioning piece 16 comes into contact. A bolt hole (not shown) is provided in the reference wall 51, and the tip of the bolt 17 inserted into the bolt hole formed in the reference wall 51 is screwed into the bolt hole formed in the positioning piece 16, etc. The positioning piece 16 may be fixed to the reference wall 51.

  In this way, the motor 10 is in a state in which the positioning piece 16 and the reference wall are in contact with each other, that is, in a state in which the output shaft 11 is adjusted to be arranged in a direction orthogonal to the vertical reference surface 51a of the reference wall 51. By tightening the bolt 15 inserted into the bolt hole 13 provided in the leg 12, the axial direction of the output shaft 11 of the motor 10 is orthogonal to the vertical reference surface 51 a of the reference wall 51. Can be installed accurately.

Compressor body mounting structure As described above, the compressor body 30 driven by the motor 10 placed on the frame 52 inputs a rotational driving force to the compressor body 30 as shown in FIG. And an input shaft 31 to which a driven pulley 7 is attached. The input shaft 31 is inserted into an input shaft opening 54 formed in the reference wall 51 and the reference wall 51 has the input shaft 31. It is attached to the vertical reference surface 51a of the reference wall 51 so as to protrude from the other surface 51b.

  In order to enable the compressor body 30 to be attached to the reference wall 51, the compressor body 30 includes a vertical reference surface of the reference wall 51 at the end of the casing on the side from which the input shaft 31 projects. There are provided a plurality of fixing pieces 32 to 34 which are bolted in contact with 51a.

  The fixed pieces 32 to 34 are provided so that the planes of the reference wall 51 that are in contact with the vertical reference plane 51a are formed on the same plane that is orthogonal to the axial direction of the input shaft 31 described above. Therefore, the compressor body 30 is attached to the reference wall 51 so that the planes of the fixed pieces 32 to 34 are in contact with the vertical reference surface 51a of the reference wall 51, so that the input of the compressor body 30 can be performed. The shaft 31 is arranged such that its axial direction is perpendicular to the vertical reference plane 51a of the reference wall 51. As a result, the output shaft 11 of the motor 10 and the input shaft 31 of the compressor main body 30 described above are accurately parallel. Placed in.

  In the above-described embodiment, a plurality of fixed pieces 32 to 34 are disclosed. However, the fixed pieces 32 to 34 may be formed such that the fixed pieces 32 to 34 are independent from each other, or, for example, Each fixed piece 32 to 34 is formed integrally with each other, for example, as a single flange-like shape protruding in the outer peripheral direction from the entire circumference of the end of the casing, and will be described later at a predetermined position of the fixed piece. Each of the bolt holes may be provided, and the shape and the like thereof can be arbitrarily changed according to the implementation, such as the type and size of the work machine body, and are not limited to the illustrated embodiment illustrated. Needless to say.

  Bolt holes (not shown) are formed in the fixing pieces 32 to 34 provided in the compressor main body 30, respectively, and the reference wall at a position corresponding to the mounting position of the fixing pieces 32 to 34 is provided. 51 are provided with bolt holes 35 to 37, respectively, so that the fixing pieces 32 to 34 can be attached to the reference wall 51 by fixing bolts 38 a to 38 c passing through the bolt holes 35 to 37 formed in the reference wall 51. It is configured.

  Such fixing bolts 38a to 38c are attached by using bolt holes (not shown) formed in the fixing pieces 32 to 34 as screw holes in which female threads are formed on the inner periphery, and bolts formed on the reference wall 51. You may comprise so that the front-end | tip of the said volt | bolt 38a-38c which penetrated the holes 35-37 can be screwed together in the screw hole provided in the fixing pieces 32-34, or it may be in the reference | standard wall 51. The nuts 39 are screwed into the bolts 38a to 38c from the tips of the bolts 38a to 38c passing through the formed bolt holes 35 to 37 and the bolt holes (not shown) formed in the fixing pieces 32 to 34, respectively. The reference wall 51 and the fixing pieces 32 to 34 may be sandwiched between the head and the nut 39 to fix them.

  The bolt hole 35 formed in the reference wall 51 at the mounting position of one (32) of the plurality of fixing pieces 32 to 34 has a diameter of a fixing bolt (fulcrum side fixing bolt) 38a inserted therein. On the other hand, the bolt is formed to be slightly larger in diameter so that the bolt can be inserted with little play.

  On the other hand, bolt holes 36 and 37 formed at the mounting positions of the other fixing pieces 33 and 34 are bolt holes (not shown) formed in the other fixing pieces 33 and 34 around the fulcrum side fixing bolt 38a. Are formed as long hole-shaped bolt holes 36, 37 with the arc direction passing through the forming position as the length direction, and bolts (movable side fixing bolts) 38b, 38c inserted therein are the long hole-shaped bolt holes. A part of the movable fixing means is configured so that it can be moved in the length direction in 36 and 37.

  Accordingly, by slightly loosening the fulcrum side fixing bolt 38a and the movable side fixing bolts 38b and 38c that fix the fixing pieces 32-34 of the compressor body 30 and the reference wall 51, The compressor main body 30 is rotatable in the direction indicated by the arrow in FIG. 3 corresponding to the length of the bolt holes 36 and 37 formed in the shape of a long hole with the fulcrum side fixing bolt 38a as a support shaft. With this configuration, the relative position of the drive pulley 6 attached to the output shaft 11 of the motor 10 and the driven pulley 7 attached to the input shaft 31 of the compressor body 30 can be made variable. When the above-mentioned fulcrum side solid bolt 38a and movable side fixing bolts 38b and 38c are tightened in a state where the compressor body 30 is rotated to a predetermined position, the compressor body 30 is brought into an arbitrary rotation position. In addition to being able to be fixed to the quasi-wall 51, the contact surface of each of the fixed pieces 32 to 34 and the vertical reference surface 51 a of the reference wall 51 are pressed against each other, so that the input shaft 31 of the compressor body 30 can be It is configured so as to be accurately arranged in the orthogonal direction with respect to the vertical reference plane 51a.

  In the illustrated embodiment, two movable fixed pieces 33 and 34 are provided, but one of them (for example, 34) may be omitted, or 2 It is good also as a structure which provides one or more movable side fixed pieces. In this case, a number of elongated bolt holes corresponding to the number of movable side fixed pieces formed are provided in the reference wall 51.

Rotation mechanism of compressor main body The compressor main body 30 attached to the reference wall 51 as described above is in a state in which the fulcrum side fixing bolt 38a and the movable side fixing bolts 38b and 38c are slightly loosened and can be rotated. It is possible to rotate the compressor main body 30 that has been made by the rotation mechanism 20.

  The rotating mechanism 20 includes a jack bolt 21 having one end connected to the compressor body 30, a bracket 22 having a bolt hole into which the other end of the jack bolt 21 is inserted, and the other end of the jack bolt 21. In the illustrated embodiment, one end of the jack bolt 21 is connected to one of the movable side fixed pieces 33 provided in the compressor body 30 in the illustrated embodiment. In addition, the other end of the jack bolt 21 is inserted into the bolt hole of the bracket 22 projecting from the upper end side of the reference wall 51 on the vertical reference surface 51 a side of the reference wall 51.

  In the illustrated embodiment, a bolt hole into which the other end of the jack bolt 21 is inserted is formed in the upper bent portion of the reference wall 51, and the function of the bracket 22 is given to the bent portion. However, the bracket 22 may be provided, for example, by welding a metal piece or the like to the vertical reference surface 51a of the reference wall 51, and is not limited to the illustrated embodiment.

  In the present embodiment, the above-described jack bolt 21 is an eye bolt in which an annular eye (bolt hole) is formed at one end, and the bolt hole 36 formed in the reference wall 51 and the movable fixed piece 33 are connected to each other. The distal end of the movable side fixing bolt 38b penetrating through the formed bolt hole (not shown) is further inserted into an eye (bolt hole) formed at one end of the jack bolt 21, and the movable side fixing bolt 38b. A nut 39 is screwed in from the tip of the jack, and one end of the jack bolt 21 is pivotably connected to the fixed piece.

  Then, a jack nut 23 is screwed into the other end of the jack bolt 21 protruding through the bolt hole formed in the bracket 22 and the lower end surface of the jack nut 23 is brought into contact with the bracket 22. In this state, when the jack nut 23 is tightened and the length of the jack bolt 21 protruding from the bracket 22 is increased, the compressor body 30 is rotated in the clockwise direction in FIG. 3 around the fulcrum side fixing bolt 38a. On the contrary, when the jack nut 23 is moved to the other end (upper end) side of the jack bolt 21, the compressor body 30 can be rotated counterclockwise in FIG. Yes.

  In the illustrated embodiment, as described above, the bolt hole into which one end of the jack bolt 21 is inserted is formed in the bent portion at the upper end of the reference wall 51, and this is used as the bracket 22. However, for example, when one end of the jack bolt 21 is connected to the other movable side fixed piece 34, the bracket 22 may be provided at the end of the reference wall 51 in the width direction, for example, on the right side of the page in FIG. A bolt hole is formed in the upper end portion of the side wall 55 near the reference wall 51 and the other end of the jack bolt 21 is inserted into the bolt hole, and the other end of the jack bolt 21 protruding from the bolt hole is formed. Alternatively, the jack nut 23 may be screwed to the rotary mechanism of the compressor body 30.

Adjustment method and operation Pulley belt tensioning and tension adjustment In the belt-driven compressor 1 configured as described above, the drive pulley 6 attached to the output shaft 11 of the motor 10 and the input shaft 31 of the compressor main body 30 are provided. When the pulley belt 8 is stretched between the attached driven pulleys 7, first, each nut screwed to the fulcrum side fixing bolt 38a and the movable side fixing bolts 38b and 38c that fix the compression main body 30. 39 is slightly loosened so that the compressor body 30 can rotate about the fulcrum side fixing bolt 38 a, the jack nut 23 is rotated, and the jack nut 23 is connected to the other end of the jack bolt 21. To the side (upper side in FIG. 3).

  Due to the movement of the jack nut 23, the compressor body 30 is rotated counterclockwise in FIG. 3 by the tension applied to the pulley belt 8 and the weight of the compressor body 30. The driven pulley 7 attached to the input shaft 31 moves to the drive pulley 6 side, and the interval between both pulleys is narrowed.

  In this state, when a pulley belt 8 that needs to be replaced is stretched between the driving and driven pulleys 6 and 7, the pulley belt 8 is removed and a new pulley belt 8 is driven between the driving and driven pulleys 6 and 7. Hang over.

  After the pulley belt 8 is thus extended, when the jack nut 23 is rotated and tightened, the length of the jack bolt 21 between the bracket 22 and the fixed piece 33 is shortened, and the fixed piece 33 is pulled up to the upper side of the page, and the compressor body 30 rotates in the clockwise direction in FIG. 3 about the fulcrum side fixing bolt 38a. As a result, the relative distance between the driving pulley 6 and the driven pulley 7 is increased, and tension is applied to the pulley belt 8 spanned between the driving pulley 6 and the driven pulley 7, and the jack nut is placed at a position where this tension is optimal. By adjusting the screwing position 23, the tension adjustment of the pulley belt 8 can be completed.

  Thus, after the tension adjustment of the pulley belt 8 is completed, when the nut 39 screwed into each of the fulcrum side fixing bolt 38a and the movable side fixing bolts 38b, 38c is tightened, the compressor body 30 is moved to the reference side. It is fixed so that it cannot rotate with respect to the wall 51.

  When the compressor main body 30 is rotated, the looseness of the nut 39 screwed to the fulcrum side fixing bolt 38a and the movable side fixing bolts 38b, 38c is set so that the plane of the fixing pieces 32 to 34 is the reference wall 51. The input shaft 31 of the compressor main body 30 is orthogonal to the vertical reference surface 51a of the reference wall 51 even when the compressor main body 30 is rotated. Even if the nut 39 screwed into the fulcrum side fixing bolt 38a and the movable side fixing bolts 38b and 38c is tightened again after the rotation of the compressor body 30, the nut 39 is tightened. , It is possible to prevent the tension of the adjusted pulley belt 8 from changing.

  In addition, in the operation of attaching the pulley belt 8 and adjusting the tension in this way, the input shaft 31 of the compressor main body 30 is always maintained in a state of being arranged in a direction orthogonal to the vertical reference plane 51a of the reference wall 51. Unlike the belt-driven compressor described as the prior art, the parallelism between the input shaft 31 of the compressor body 30 and the output shaft 11 of the motor 10 is made when the pulley belt 8 is replaced or the tension of the pulley belt 8 is adjusted. The adjustment work for taking out is unnecessary, and the work of adjusting the tension of the pulley belt 8 can be performed very easily.

Parallel adjustment of motor output shaft, etc. The motor 10 which is a drive device is placed on the frame 52 of the gantry 50 with the output shaft 11 adjusted in advance so as to be perpendicular to the vertical reference plane 51a of the reference wall 51. Positioning on the motor 10 side, and hence the drive pulley 6 side, is not necessary as long as it is placed and fixed and maintained as it is.

  However, for example, when the motor 10 is first attached to the gantry 50 or when the belt-driven work machine 1 is used, positional displacement due to loosening of bolts caused by vibrations, re-assembly after the motor 10 is removed due to maintenance, etc. When performing, adjustment may be necessary so that the output shaft 11 of the motor 10 is perpendicular to the vertical reference plane 51 a of the reference wall 51.

  In consideration of such adjustment of the output shaft 11, as shown in FIG. 4, in the configuration in which the positioning piece 16 is provided in the casing of the motor 10, it is attached to the bolt hole 13 provided in the leg portion 12 of the motor 10. In the state where the bolt 15 is loosened, the position of the output shaft 11 can be adjusted by bringing the plane provided on the positioning piece 16 into contact with the vertical reference surface 51a of the reference wall 51. In this way, the positioning piece 16 can be adjusted. By tightening the bolt 15 in a state where it is in contact with the reference wall 51 and fixing the motor 10 on the frame 52, the output shaft 11 can be accurately placed in a direction perpendicular to the vertical reference surface 51a of the reference wall 51. Can be arranged.

  Further, as shown in FIG. 4, the distance δa between the plane of the positioning piece 16 and the end face of the drive pulley 6 is set between the plane of the fixed pieces 32 to 34 provided on the compressor body 30 and the end face of the driven pulley 7. By setting the interval δb to the same interval, the end faces of the driving and driven pulleys 6 and 7 are automatically aligned and the pulley belt 8 stretched between the pulleys 6 and 7 When viewed from (see FIG. 4), the pulley belt 8 is pulled off due to, for example, twisting of the pulley belt 8 because the pulley shaft 8 is twisted in the orthogonal direction with respect to both the drive shaft 11 and the input shaft 31. Breakage, uneven wear of the pulley belt 8 and pulleys 6 and 7, abnormal noise and abnormal vibration can be suitably prevented.

  As shown in FIG. 5, the positioning piece 16 provided on the casing of the motor 10 and the reference wall 51 are fixed to each other, for example, the positioning piece 16 can be fixed to the reference wall 51 with the bolt 17. Thus, by fixing the positioning piece 16 in contact with the vertical reference surface 51 a of the reference wall 51, the axial direction of the output shaft 11 can be more accurately orthogonal to the vertical reference surface 51 a of the reference wall 51. Can be arranged.

The perspective view of the belt drive type work machine of the present invention. The left side see-through | perspective view of the belt drive type working machine of this invention. FIG. 3 is a front perspective view of the belt-driven work machine of the present invention. The left side see-through | perspective view of the belt drive type working machine of this invention provided with the positioning piece. The left side see-through | perspective view of the belt drive type working machine of this invention which fixed the positioning piece to the reference | standard wall. The left view of the conventional belt drive type working machine. The front view of the conventional belt drive type working machine.

Explanation of symbols

1 Belt-driven working machine (belt-driven compressor)
6 Driving pulley 7 Driven pulley 8 Pulley belt 10 Drive device (motor)
11 Output shaft 12 Leg 13 Bolt hole 15 Bolt (for fixing the motor to the frame)
16 Positioning piece 17 Bolt (for fixing the positioning piece to the reference wall)
20 Rotating Mechanism 21 Jack Bolt 22 Bracket 23 Jack Nut 30 Work Machine Body (Compressor Body)
31 Input shaft 32 Fixed piece (fulcrum side)
33, 34 Fixed piece (movable side)
35 Bolt hole (fulcrum side)
36, 37 Bolt hole (movable side)
38a Supporting side fixing bolts 38b, 38c Movable side fixing bolts 39 Nut 50 Mounting base 51 Reference wall 51a Vertical reference surface (one surface of the reference wall)
51b The other surface (surface facing the vertical reference surface of the reference wall)
52 Frame 53 Output shaft opening 54 Input shaft opening 55 Side wall 56 Fixed frame 57 Movable frame 58 Hinge mechanism

Claims (9)

A belt-driven type work in which a pulley belt is stretched between a drive pulley provided on the output shaft of the drive unit and a driven pulley provided on the input shaft of the work unit body so that the output of the drive unit can be input to the work unit body. In the machine
A frame is constructed by standing a reference wall having a vertical reference plane on at least one surface defining a vertical plane with respect to the frame.
Placing the driving device on the frame of the gantry so that the axial direction of the output shaft is perpendicular to the one vertical reference plane of the reference wall;
A fixing piece having a plane perpendicular to the axial direction of the input shaft is provided on the casing of the work machine body, and the plane is in contact with the one vertical reference plane of the reference wall. A fixed piece is pivotally attached to the reference wall, and the work implement main body can be rotated around the pivot attachment position, and the distance between the drive pulley and the driven pulley can be varied by turning the work implement main body. A belt-driven work machine characterized by   The drive device is placed on the frame on the vertical reference surface side of the reference wall, and the output shaft projects from the output shaft opening provided on the reference wall to the other surface side of the reference wall; The fixed piece is provided at the casing end on the projecting side of the input shaft of the work machine body, and the work shaft body is attached to the vertical reference surface of the reference wall and provided on the reference wall. 2. The belt drive according to claim 1, wherein the drive shaft and the driven pulley are arranged on the other surface side of the reference wall with the input shaft projecting from the other surface side of the reference wall via Work machine. A plurality of the fixed pieces are provided in the casing of the work machine body, and both of the flat surfaces of the fixed pieces are formed on the same plane that is orthogonal to the axial direction of the input shaft,
One of the fixed pieces is axially attached to the reference wall, and the other fixed piece is fixed to the reference wall at an arbitrary position on the movement locus of the other fixed piece with the axial attachment position as a center. The belt drive type work machine according to claim 1 or 2, further comprising variable fixing means.   The variable fixing means is inserted into the elongated hole-shaped bolt hole formed in the reference wall with the arc direction centering on the axis attachment position as the length direction, and the elongated hole-shaped bolt hole. The belt-driven work machine according to claim 3, wherein the fixing piece is a fixing bolt for fixing the fixed piece to the reference wall.   The belt drive type work machine according to any one of claims 1 to 4, further comprising a turning mechanism for turning the work machine main body about the shaft attachment position.   The rotating mechanism includes a jack bolt having one end connected to the work machine body, a bracket projecting from the vertical reference surface of the reference wall, and a bolt hole into which the other end of the jack bolt is inserted; A jack nut screwed into the other end side of the jack bolt protruding through the bolt hole of the bracket, and adjusting the screwing position of the jack nut with respect to the length direction of the jack bolt. The belt-driven work machine according to claim 5, wherein the work machine main body is rotatable.   A state in which a positioning piece having a plane perpendicular to the axial direction of the output shaft is provided in the casing of the drive device, and the plane of the positioning piece is in contact with the vertical reference plane of the reference wall The belt-driven working machine according to claim 1, wherein the driving device is placed on the frame.   8. A belt-driven work machine according to claim 7, further comprising fixing means for fixing the positioning piece to the reference wall.   The drive pulley and the driven pulley are formed to have the same width, and the distance between the flat surface of the positioning piece and the end face of the drive pulley and the distance between the flat surface of the fixed piece and the end face of the driven pulley are the same. The belt-driven work machine according to claim 7 or 8, wherein the belt-driven work machine is formed as described above.

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