KR20230105847A - A winch for pulling stage facility - Google Patents

Abstract

The present invention relates to a base 1 and support parts 2 fixed vertically upward at both ends of the base, a drum 3 rotatably mounted between the support parts 2 and winding a wire rope, the drum It relates to a winch for pulling stage facilities having a motor 4 and a reducer built in, wherein the reducer is driven by a pinion gear 41 provided on an output shaft of the motor 4 to reduce rotation. (5), and a second reduction unit (6) for transmitting the rotational force of the reduced number of revolutions to the output shaft in gear engagement with the first reduction unit (5) to further reduce the rotation of the first reduction unit (5). ), wherein the first reduction part 5 is provided at one end of each of the rotating shafts rotatably mounted on the carrier 51 and is rotated by a pinion gear 41 provided on the output shaft of the motor. First planetary gears 52 and a second planetary gear 53 provided at the other end of each of the rotating shafts provided on the carrier 51 to rotate together with the first planetary gears 52, the second planetary gear 53 The planetary gears 53 are internally engaged and geared and configured to include a first ring gear 54 fixed to the case 8, so that it is more compact than the conventional winch and a relatively larger reduction ratio can be obtained With a relatively more compact configuration compared to the prior art, it can be installed in a narrow and complex installation place on the ceiling of a performance hall, so that the installation work can be performed more easily.

Description

Winch for pulling stage facilities {A WINCH FOR PULLING STAGE FACILITY}

The present invention relates to a winch for towing stage facilities, and in particular, to a winch that individually raises and lowers stage facilities such as a plurality of device rods, backdrops, and lighting used in stage performances to a predetermined position, including a motor and a reducer in a drum. It relates to a winch for towing stage facilities with a built-in winch that is compact and improves maintenance convenience.

In general, on a performance stage such as a play or opera, various device rods and backdrops are used according to the performance scene, and the position of lighting is also adjusted for dramatic effect. The adjustment of the position of these device rods and backdrops is performed by setting stage devices necessary from the beginning to the end of the performance at a preset position, and then raising and removing the last stage devices in turn as the performance progresses.

A winch is used to raise and lower these device rods, backdrops or lights, and the winch is a drum for winding a wire rope connected to the backdrops and lights, a motor and a reducer for forward and reverse rotation of the drum, and a winch for backdrops and lights. It includes a number of guide pulleys for guiding the wire rope connected to the drum to the drum.

As a conventional example of such a winch, Korean Patent Registration No. 10-1745514 (registration date June 2, 2017) includes a base part; a rotary drum provided on the upper part of the base and around which a wire rope is wound; a driving motor providing rotational force to the rotary drum; a guide wheel for guiding the wire rope wound around the rotating drum; There is disclosed a wire winch for stage facilities including a; and a conveying unit for rectilinearly reciprocating the rotary drum along the longitudinal direction of the base part by the rotational force of the rotary drum.

In addition, as another example, Korea Patent Registration No. 10-2079506 (registration date February 14, 2020) has a screw drum for winding or unwinding a wire rope for raising and lowering a stage device; Linear movement means installed on a drum support plate or a rotating shaft supporting the screw drum to convert the rotational motion of the screw drum into linear motion; a base frame supporting the drum support plate to be linearly movable; A guide sheave composed of an upper guide sheave installed inside the front end of the base frame to guide each wire rope horizontally by collecting them in a vertical sheave, and a lower guide sheave that guides the wire rope that has passed through the upper sheave to the lower wire rope groove; and a multi-conical sheave composed of multi-conical pulleys that gather each wire rope horizontally from the lower guide sheave parallel to the bottom of the base frame and supply it to the tangential position of the screw drum; The multi-cone pulley unit includes first to n-th multi-cone pulleys installed as many as the number of wire ropes and installed inside the base frame without adding an installation height; The 2nd to nth multi-circle pulleys include a main pulley installed to be accurately directed in the tangential direction of the screw drum, and an auxiliary pulley that moves other adjacent wire ropes that are not selected to the next multi-circle pulley; The vertical position of the lead-in wire rope is higher than the vertical position of the lead-in wire rope in the main and auxiliary pulleys.

Disclosed is a conical multi-pulley stage-only winch that is inclined to be close to the outer diameter of a screw drum.

However, the winch for stage facilities of the prior art occupies a large space because the motor and reducer are installed on the side of the winch. In addition to the fear of departure, there were many difficulties in maintenance due to the multiple pulleys provided with the inclined arrangement of the wire rope.

As an improvement measure for this, the present applicant, in Registered Patent No. 10-2221240 published on March 3, 2021, a drum rotatably mounted between support members spaced apart from each other fixed to the base, a motor for driving the drum And, a stage equipped with guide pulleys arranged horizontally in correspondence with each wire rope on the lower side of the drum to guide a plurality of wire ropes for traction of stage facilities drawn out from the reducer connected to the output shaft of the motor and the drum In the winch for facility traction, the motor and the speed reducer are built inside the drum, and are connected to the inside of one end member of the drum and an electric gear device that meshes with a gear provided on an output shaft of the speed reducer and is connected to the inside of the electric gear device. A winch for towing a stage facility, characterized in that it includes a driven ring gear, has been proposed.

Korean Patent Registration No. 10-1745514 (registration date: June 02, 2017) Korean Patent Registration No. 10-2079506 (registration date: February 14, 2020) Korean Patent Registration No. 10-2221240 (Announcement date March 03, 2021)

An object of the present invention is to solve the above problems of the prior art, by embedding a motor and a reducer inside the drum and configuring a reduction gear train more compactly so that it can be installed on a narrow stage ceiling and operate stably It is to provide a winch for traction of stage facilities that has been improved and improved to increase the reduction ratio so that the stage facilities can be safely moved up and down.

In order to achieve the above object, the stage facility traction winch according to the present invention, a base and support parts fixed vertically upward at both ends of the base, a drum rotatably mounted between the support parts and winding a wire rope , In the stage facility traction winch having a motor and a reducer built into the drum, the reducer is driven by a pinion gear provided on an output shaft of the motor to reduce rotation, and the first reducer In order to further reduce the rotation, a gear is engaged with the first reduction unit and includes a second reduction unit for transmitting the rotational force of the reduced rotation speed to the output shaft,

The first reduction unit includes a plurality of first planetary gears provided at one end of each of the rotation shafts rotatably mounted on the carrier and rotated by a pinion gear provided on the output shaft of the motor, and the other side of each of the rotation shafts provided on the carrier. It is configured to include a second planetary gear provided at an end portion to rotate together with the first planetary gears, and a first ring gear in which the second planetary gears are internally engaged and fixed to the case.

The second reduction unit includes a reduction gear fixed to an end of the carrier as an output side of the first reduction unit, an idle gear engaged with an outer circumferential surface of the reduction gear, and a second ring gear engaged with the idle gear on the outside of the idle gear. do.

The rotation of the carrier of the first reduction unit is reduced and transmitted to the second ring gear through the idle gear, and the idle gear is engaged with the second ring gear fixed to the first flange portion of the drum through an opening formed in the flange of the holder. It consists of

The winch for towing stage facilities according to the present invention has a motor and a reducer built into the drum, and the reducer is composed of first and second reducers, so that it is more compact than the conventional winch and has the effect of obtaining a relatively larger reduction ratio. In comparison, it has a relatively more compact configuration and can be installed in a narrow and complex space installation place on the ceiling of a performance hall, so there is an effect that the installation work can be performed more easily.

1 is a perspective view of a winch in which a reducer and a motor are built into a drum according to the present invention.
Figure 2 is an exploded perspective view of a state in which the motor and reducer assembly and the drum in Figure 1 are disassembled;
Figure 3 is a schematic exploded perspective view of the motor and reducer assembly in Figure 2;
4 is a schematic cross-sectional view of a drum in which a reducer and a motor are embedded in FIG. 1 and shows a structure of the reducer for transmitting the driving force of the motor to the output shaft of the winch.
FIG. 5 shows first and second planetary gears provided on both sides of the carrier as the first deceleration part in FIG. 4 .
FIG. 6 shows the first reduction part in which the second planetary gear meshes with the first ring gear in FIG. 5 .
7 is a perspective view of a state in which a second reduction unit composed of a reduction gear, an idle gear, and a second ring gear provided in the carrier of the first reduction unit of FIG. 6 is assembled;
Figure 8 is a schematic cross-sectional view of Figure 7;

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing embodiments of the present invention.

In Figures 1 to 4, the winch for towing stage facilities according to the present invention is rotatable between a base (1) and support parts (2) fixed vertically upward at both ends of the base, and the support parts (2). It includes a drum 3 mounted and winding a wire rope, a motor 4 and a reducer built into the drum, and the drum 3 has flange parts 31 and 31' coupled to the inside of both ends, The rotational force of the output shaft of the motor 4 is reduced by the reduction gear to cause the flange portion 31 to rotate, thereby rotating the drum 3.

A plurality of guide pulleys 11 arranged horizontally on the lower side of the drum 3 are rotatably mounted on the base 1 to guide the wire ropes drawn and wound from the drum. Since the guide pulleys are arranged horizontally, it is possible to construct a winch for traction more compactly than before.

In the present invention, in order to increase the rotational force of the drum rotated by the motor 4, the speed reducer reduces the number of revolutions of the motor in two steps to obtain a compact and large reduction ratio.

To this end, the reducer is driven by the pinion gear 41 provided on the output shaft of the motor 4 to reduce the rotation of the first reduction unit 5, and the rotation of the first reduction unit 5 is further reduced. In order to do this, it is engaged with the first reduction unit 5 and includes a second reduction unit 6 for transmitting the rotational force of the reduced number of revolutions to the output shaft, and the motor 4 and the first and second reduction units 5 ,6) are embedded between the flange parts 31 and 31' provided at the inner ends of both sides of the drum 3, and the flange part 31 on one side is connected to the second reduction part 6, so that the drum eventually becomes a motor The number of rotations of (4) rotates with the reduced rotation of the second deceleration unit (6). The flange portions 31 and 31' are mounted rotatably about rotation shafts 7 and 7' through bearings, respectively, and the rotation shafts 7 and 7' are fixed to support portions 2 provided on both sides of the drum. .

As shown in FIGS. 5 and 6, the first deceleration unit 5 is provided at one end of each of the rotating shafts rotatably mounted in the carrier 51 to the pinion gear 41 provided on the output shaft of the motor. In the illustrated embodiment, three first planetary gears 52 are provided at the other end of each of the rotating shafts provided on the carrier 51 to rotate together with the first planetary gears 52. and a first ring gear 54 in which the second planetary gears 53 are internally connected and meshed with each other. The first ring gear 54 is fixed to the case 8 fixed to the motor 4.

In addition, the second reduction unit 6 is a reduction gear 61 fixed to the end of the carrier 51 as an output side of the first reduction unit 5, as shown in FIGS. 7 and 8, the reduction gear 61 It includes an idle gear 62 engaged on the outer circumferential surface of the idle gear 62 and a second ring gear 63 engaged with the idle gear 62 on the outside of the idle gear 62, and the second ring gear 63 is fixed to the first flange portion 31 of the drum 3. In addition, the idle gear 62 is engaged with the second ring gear 63 through an opening formed in the flange 65 of the holder 64, and the holder 64 is fastened to the rotating shaft 7 with bolts to be fixed. has been The rotation of the carrier 51 as the output side of the first reduction part 5 is reduced and transmitted to the second ring gear 63 through the idle gear 62.

Thus, the rotation of the pinion gear 41 of the motor 4 is reduced to the first step in the first reduction part 5, to the second step in the second reduction part 6, and finally to the second reduction part The drum 3 to which the flange portion 31 of one side to which the second ring gear 63 of (6) is fixed is fixed is decelerated and rotated.

The first ring gear 54 is fixed to the inside of the case and the second ring gear 63 is fixed to the inside of the flange portion 31 on one side.

Thus, when the motor 4 is operated, the three first planetary gears 52 in the illustrated embodiment engaged with the pinion gear 41 provided on the motor output shaft as the first reduction portion 5 are rotated, , At this time, as the second planetary gears 53 provided on the other side of the carrier 51 rotate and eventually the carrier 51 rotates, rotational force is output through a shaft provided at the center of the carrier 51.

The output rotation reduction ratio of the first deceleration unit 5 to the axis of the carrier 51 is obtained according to the following planetary gear calculation formula.

Reduction ratio = 1/{(number of teeth of ring gear/sun gear) + 1}

Here, the sun gear is a pinion gear, the ring gear is fixed, the sun gear is the input side, and the shaft of the carrier is the output side. Depending on the number of teeth of the ring gear, planetary gear, and pinion gear (sun gear), various reduction ratios can be obtained as follows.

reduction ratio number of teeth of ring gear number of teeth of planetary gear Number of teeth of sun gear 1/3 108(90) 27(23) 54(45) 1/4 108 36 36 1/5 108 40 27 1/6 105 42 21 1/7 108 45 18 1/8 105 45 15 1/9 96 42 12 1/10 108 48 12

As an embodiment, the number of teeth of the motor-side pinion gear 41 is 15, the number of teeth of the first planetary gear 52 is 60, the number of teeth of the second planetary gear 53 is 30, and the number of teeth of the first ring gear 54 is 60. When is set to 30, the carrier 51 as the output side is decelerated by 1/{(60/15) x (105/30) + 1} = 1/15.

At this time, in the second reduction part 6 where the end of the carrier 51 is connected to the reduction gear 61, the number of teeth of the reduction gear 61 is 60, the number of teeth of the idle gear 62 is 30, and the second ring gear When the number of teeth of 63 is 120, the holder 64 to which the idle gears 62 are rotatably mounted is reduced by (30/60) x (30/120) = 1/2.

Therefore, the rotation of the pinion gear 41 provided on the output shaft of the motor is finally achieved through the first reduction unit 5 and the second reduction unit 6, and the flange unit 31 to which the second ring gear 63 is fixed. With the drum 3 is reduced to 1/15 × 1/2 = 1/30.

In the winch for towing stage facilities according to the present invention, the reduction gear of the second reduction unit meshed with the carrier in the first reduction unit built into the drum rotates at reduced speed through the idle gear, so that the second ring gear eventually With a structure in which the drum rotates at a reduced speed through the fixed flange portion 31, it is more compact than before and can be easily installed in a narrow and complex space on the ceiling of a performance hall. As a result, it is possible to obtain a relatively larger reduction ratio than in the conventional winch reducer.

The present invention can be used to compactly configure a winch for towing a stage facility for adjusting the position of a device rod, backdrops, and lights used in a performance stage.

1: base 2: support
3: drum 4: motor
5: first reduction part 6: second reduction part
8: Case 31,31'; Flange part
41: pinion gear 51: carrier
52: first planetary gear 53: second planetary gear
54: first ring gear 61: reduction gear
62: idle gear 63: second ring gear
64: holder 65: flange

Claims (3)

A base (1) and support parts (2) fixed vertically upward at both ends of the base, a drum (3) rotatably mounted between the support parts (2) and winding a wire rope, and a built-in drum In the winch for towing stage facilities having a motor 4 and a reducer,
The reducer is driven by the pinion gear 41 provided on the output shaft of the motor 4 to reduce the rotation of the first reduction unit 5, and to further reduce the rotation of the first reduction unit 5 It includes a second reduction part 6 for transmitting the rotational force of the reduced number of revolutions engaged with the first reduction part 5 to the output shaft,
The first reduction part 5 is a plurality of first planetary gears provided at one end of each of the rotation shafts rotatably mounted on the carrier 51 and rotated by the pinion gear 41 provided on the output shaft of the motor ( 52) and a second planetary gear 53 provided at the other end of each of the rotating shafts provided on the carrier 51 to rotate together with the first planetary gears 52, the second planetary gear 53 A winch for towing stage facilities, characterized in that it is configured to include a first ring gear 54 fixed to the case 8 by being internally engaged with the gear.
According to claim 1,
The second reduction gear 6 includes a reduction gear 61 fixed to the end of the carrier 51 as an output side of the first reduction gear 5 and an idle gear 62 geared to the outer circumferential surface of the reduction gear 61. ), a winch for towing stage facilities, characterized in that it comprises a second ring gear 63 to which the idle gear 62 is engaged on the outside of the idle gear 62.
According to claim 2,
The rotation of the carrier 51 of the first reduction part 5 is reduced and transmitted to the second ring gear 63 through the idle gear 62, and the idle gear 62 is the flange of the holder 64 ( 65) through the opening formed in the first flange portion 31 of the drum (3) is engaged with the second ring gear 63 fixed to the winch for stage facilities, characterized in that.

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