Winch for stage

Abstract

The utility model relates to the technical field of stage arrangement, in particular to a winch for a stage, which comprises a supporting structure, a lifting structure and a winch, the supporting structure comprises a mounting frame and a supporting seat, and the mounting frame is connected with the supporting seat; the winding drum is mounted on the mounting frame through a rotating shaft, the winding drum is provided with a connecting rope, and the winding drum is used for winding and unwinding the connecting rope; the transmission structures are arranged at the axial ends of the winding drums, the multiple winding drums are connected through the transmission structures, and the multiple winding drums can rotate synchronously through the transmission structures; and the driving device is installed on the installation frame, an output shaft of the driving device is coaxially connected with one winding drum, and the driving device is connected with a control system. The winch for the stage can be arranged on the side of a building girder, the winding drum of the winch is shorter, arrangement is convenient, and maintenance is also convenient when faults occur.

Description

Technical Field

[0001] The utility model relates to the technical field of stage arrangement, and more specifically to a winch for stage. Background Art

[0002] A winch is a mechanical device used to transport heavy objects vertically or horizontally. It has a wide range of applications, such as construction, ports, mining, industrial production, stage layout, etc. Its main function is to lift, lower or move goods by winding ropes or wire ropes.

[0003] On the stage, winches are often used to lift and hang stage equipment and props such as lamps, audio equipment, and curtains. These winches usually need to have a certain load-bearing capacity, precise control, and safety protection mechanisms. In the actual stage layout, the winch is made by making a load-bearing structure on the building beam. The load-bearing structure is in the middle of the building beam, and then the winch is installed on the load-bearing structure. The winch is located directly above the curtain. The stage curtain is very wide, and there are multiple hanging points in the width direction of the top of the curtain. The steel wire rope wound on the winch drum is connected to the multiple hanging points of the curtain to carry out the lifting and lowering of the curtain. In order to facilitate the lifting and hanging of the curtain, the length of the existing winch drum is consistent with the width of the curtain. There are several steel wire ropes wound on the drum, and the length of each steel wire rope is consistent. Each steel wire rope is connected to a hanging point on the curtain. When the curtain needs to be raised or lowered, several steel wire ropes are retracted and released at the same time.

[0004] However, the drum of the existing hoist is consistent with the width of the curtain, and there are at least the following three shortcomings, in other words, which are the technical problems to be solved by the utility model:

[0005] 1. Since the load-bearing structure is built on the building beam, and the load-bearing structure is in the middle of the building beam, installing a winch on the load-bearing structure will result in poor force on the building beam;

[0006] 2. Since the width of the drum is the same as that of the curtain, the length of the winch drum is very long, but the space for stage operation is limited, so it is not convenient to arrange the winch in a limited space;

[0007] 3. Since the winch is located in the middle of the building beam, it will be inconvenient to repair the winch when it fails.

[0008] In summary, there is an urgent need for a stage winch that can reduce the operating space, ensure the load-bearing structure of the building beam, and facilitate maintenance work to solve the shortcomings of the existing technology. Utility Model Content

[0009] The utility model provides a winch, which can be arranged on the side of a building beam. The stage winch replaces a long drum with the same length as the curtain in the prior art with a plurality of short drums, and the short drums are arranged in layers and synchronously rotated under the action of a transmission structure and a driving device, so that: 1. a load-bearing structure is made on the load-bearing walls on both sides of the building beam, and the force is better; 2. the length of the drum is shortened, and it is more convenient to arrange the stage winch in a limited space; 3. the stage winch is arranged on the side of the building beam, and it is convenient to repair when a fault occurs.

[0010] The specific solutions adopted by the utility model to solve the above technical problems are as follows:

[0011] A stage winch, comprising:

[0012] A supporting structure, the supporting structure comprising a mounting frame and a supporting seat, the mounting frame being connected to the supporting seat;

[0013] A reel, the reel is mounted on the mounting frame via a rotating shaft, the reel is provided with a connecting rope, and the reel is used for retracting and releasing the connecting rope;

[0014] A transmission structure, wherein the transmission structure is arranged at the axial end of the reel, and a plurality of the reels are connected by the transmission structure, and the plurality of the reels can rotate synchronously through the transmission structure;

[0015] A driving device is installed on the mounting frame, an output shaft of the driving device is coaxially connected to one of the reels, and the driving device is connected to a control system.

[0016] As a further preferred solution, the mounting frame is also provided with an anti-tangling rope structure, the anti-tangling rope structure is arranged adjacent to the drum, and the anti-tangling rope structure is connected to a control system.

[0017] As a further preferred embodiment, the driving device includes a driving motor and a reducer, the driving motor is connected to the reducer, and the reducer is coaxially connected to the reel at the bottom.

[0018] As a further preferred solution, the mounting bracket is provided with a side plate for mounting the driving device, and the side plate is provided with a through hole allowing the output shaft of the driving device to pass through.

[0019] Further as a preferred embodiment, the transmission structure includes a first sprocket, a second sprocket, a first chain and a second chain, all of the first sprockets are connected to the first chain, all of the second sprockets are connected to the second chain, and the first sprocket and the second sprocket are provided at the axial end of at least one of the reels.

[0020] As a further preferred solution, a wiring box and a rotation limit switch are provided on one side of the driving device.

[0021] As a further preferred solution, the reel includes a cylinder body for winding the connecting rope, and the cylinder body is provided with a rope groove adapted to the connecting rope.

[0022] As a further preferred solution, one end of the connecting rope is connected to the cylinder, and the other end of the connecting rope is connected to the suspension rod connected to the curtain.

[0023] As a further preferred solution, a guide pulley for guiding the connecting rope is provided between the drum and the suspension rod.

[0024] As a further preferred solution, the guide pulley includes a first guide pulley and a second guide pulley, the first guide pulley is provided with a plurality of wheel grooves, and the second guide pulley is provided with one wheel groove.

[0025] The main beneficial effects of the above technical solution are:

[0026] Through the above technical solution, the stage winch is replaced by a plurality of short drums which are the same length as the curtain in the prior art, and the short drums are arranged in a stacked manner and rotated synchronously under the action of a transmission structure and a driving device, so that the stage winch can be conveniently arranged in a limited space; the stage winch is arranged on the side of the building beam, which has better force and is easy to repair when a fault occurs.

[0027] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The utility model is further described below in conjunction with the accompanying drawings:

[0029] Figure 1 This is a front view of the schematic diagram of the structure of the utility model Figure 1 .

[0030] Figure 2 It is a side view of the schematic structural diagram of the utility model.

[0031] Figure 3 This is a front view of the schematic diagram of the structure of the utility model Figure 2 .

[0032] As shown in the figure: supporting structure-1, mounting frame-11, supporting seat-12, reel-2, transmission structure-3, driving device-4, driving motor-41, reducer-42, anti-rope tangle structure-5, side panel-6, wiring box-7, rotation limit switch-8, connecting rope-9, suspension rod-a, guide pulley-b, first guide pulley-i, second guide pulley-ii. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the specific implementation of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the implementation of the utility model.

[0034] A stage winch, as shown in the attached Figure 1 To Attachment Figure 2 As shown, the winch includes: a supporting structure 1, a mounting frame 11, a supporting seat 12, a drum 2, a rotating shaft, a connecting rope 9, a transmission structure 3, and a driving device 4.

[0035] Specifically, the stage winch of the present solution is installed on the load-bearing structure of the load-bearing walls on both sides of the building beam, which includes a support structure 1, and the support structure 1 includes a mounting frame 11 and a support seat 12, the mounting frame 11 is connected to the support seat 12, and the mounting frame 11 is supported by the support seat 12, that is, the mounting frame 11 is located above the support seat 12; the support seat 12 is connected to the load-bearing structure of the load-bearing walls installed on both sides of the building beam. The stage winch of the present solution also includes a drum 2, a transmission structure 3 and a driving device 4. Among them, the reel 2 is installed on the mounting frame 11 of the supporting structure 1 through a rotating shaft, and the reel 2 is provided with a connecting rope 9. When the reel 2 rotates under the action of the rotating shaft, the connecting rope 9 provided on the reel 2 will be retracted / released as the reel 2 rotates; the transmission structure 3 is provided at the axial end of the reel 2, and multiple reels 2 are connected through the transmission structure 3, and multiple reels 2 can rotate synchronously through the transmission structure 3; the driving device 4 is installed on the mounting frame 11 of the supporting structure 1, and the output shaft of the driving device 4 is coaxially connected to one of the reels 2, and the driving device 4 is connected to the control system.

[0036] In this embodiment, compared with the prior art in which the load-bearing structure for installing the winch is set in the middle position of the building beam, which results in poor stress, the load-bearing structure of the stage winch installed on the load-bearing wall on both sides of the building beam can ensure good stress; by installing multiple drums 2 in a parallel stacked manner on the mounting frame 11 of the support structure 1, the length of the winch drum in the prior art can be shortened and the working space can be saved; and by the output shaft of the driving device 4 being coaxially connected to one of the drums 2, and the transmission structure 3 being connected to multiple drums 2, all the drums 2 installed on the mounting frame 11 can rotate synchronously.

[0037] Furthermore, as attached Figure 2 As shown, the mounting frame 11 is further provided with an anti-rope tangle structure 5, which is arranged adjacent to the reel 2 and connected to the control system.

[0038] Specifically, the mounting frame 11 of the support structure 1 is also provided with an anti-tangling rope structure 5, which is arranged adjacent to the reel 2 and connected to the control system. The anti-tangling rope structure 5 is an aluminum plate, which is connected to a 24V or 12V weak current system through a wire, and the weak current system is connected to the control system. When the connecting rope 9 is loose, it will touch the aluminum plate, and leakage will occur. The control system can detect the loosening of the connecting rope 9 in time. At this time, the control system will stop the driving of the driving device 4. After the driving device 4 stops, the connecting rope 9 is manually arranged to prevent the connecting rope 9 from becoming loose. Of course, a detection structure can also be set on the aluminum plate, and the detection structure is connected to the control system. When the detection structure detects that the connecting rope 9 is loose, the detection information is transmitted to the control system, and the control system controls the driving device 4 to stop driving.

[0039] In this embodiment, an anti-rope tangle structure 5 is provided, which is connected to the control system. When the connecting rope 9 is loose, the control system can stop the operation of the driving device 4 in time, and then tidy up the connecting rope 9, which can effectively prevent the connecting rope 9 from loosening.

[0040] Furthermore, as attached Figure 1 As shown, the driving device 4 includes a driving motor 41 and a reducer 42 . The driving motor 41 is connected to the reducer 42 , and the reducer 42 is coaxially connected to the bottommost reel 2 .

[0041] Specifically, the driving device 4 of the mounting frame 11 installed on the supporting structure 1 includes a driving motor 41 and a reducer 42, the reducer 42 is connected to the driving motor 41, the reducer 42 is located below the driving motor 41, and the reducer 42 is coaxially connected to the bottommost reel 2, so that under the drive of the driving motor 41, the reducer 42 can be driven, and the reducer 42 can drive the bottommost reel 2 to rotate, and then under the action of the transmission structure 3, all the reels 2 installed on the mounting frame 11 will rotate. It should be noted that the coaxial connection between the reducer 42 and the bottommost reel 2 is only the optimal situation. The coaxial connection between the reducer 42 and the bottommost reel 2 can set the entire driving device 4 lower, and the reducer 42 can also be coaxially connected to one of the remaining reels 2. On the basis of the above, since multiple reels 2 are connected through the transmission structure 3, the reducer 42 can achieve driving all reels 2 installed on the mounting frame 11 as long as it is coaxially connected to one of the reels 2.

[0042] In this embodiment, the driving device 4 is installed on the mounting frame 11, the reducer 42 is connected to the driving motor 41, and the reducer 42 is located below the driving motor 41, which can reduce the lateral size of the driving device 4. Because the reducer 42 is coaxially connected to the bottom reel 2, the driving motor 41 drives the reducer 42, and the reducer 42 can drive all the reels 2 installed on the mounting frame 11 to rotate at the same time, thereby performing the reeling / releasing action of the connecting rope 9 on the reel 2.

[0043] Furthermore, as attached Figure 1 As shown, the mounting frame 11 is provided with a side plate 6 for mounting the driving device 4 , and the side plate 6 is provided with a through hole allowing the output shaft of the driving device 4 to pass through.

[0044] Specifically, in order to facilitate the installation of the driving device 4, a side plate 6 for installing the driving device 4 is provided on the mounting frame 11 of the supporting structure 1. At the same time, the side plate 6 is provided with a through hole allowing the output shaft of the driving device 4 to pass through. The output shaft of the driving device 4 can pass through the through hole and be coaxially connected to the reel 2, so that the reel 2 can be rotated under the drive of the output shaft of the driving device 4 to retract / release the connecting rope 9 provided on the reel 2.

[0045] In this embodiment, by providing the side plate 6 on the mounting frame 11 , the installation of the driving device 4 can be facilitated.

[0046] Furthermore, as attached Figure 2 As shown, the transmission structure 3 includes a first sprocket 31, a second sprocket 32, a first chain 33 and a second chain 34, all the first sprockets 31 are connected to the first chain 33, all the second sprockets 32 are connected to the second chain 34, and the axial end of at least one reel 2 is provided with both the first sprocket 31 and the second sprocket 32.

[0047] Since the curtain has multiple hanging points, each connecting rope 9 provided on each drum 2 is responsible for the lifting of one hanging point, and the transmission structure 3 provided on the axial end of the drum 2 includes multiple groups of sprockets and chains, each group of sprockets and chains are connected, and a sprocket of each group of sprockets and chains is provided at the axial end of at least one drum 2. Since the output shaft of the driving device 4 is coaxially connected to one of the drums 2, all the drums 2 installed on the mounting frame 11 can be driven to rotate by the driving device 4. Specifically, when the curtain has six hanging points and six drums 2 are required, the transmission structure 3 includes a first sprocket 31, a second sprocket 32, a first chain 33 and a second chain 34, all the first sprockets 31 are connected to the first chain 33, all the second sprockets 32 are connected to the second chain 34, and the axial end of at least one drum 2 is provided with a first sprocket 31 and a second sprocket 32. Appendix Figure 2In the figure, the two reels 2 in the top first row are equipped with the second sprocket 32, the three reels 2 in the bottom are equipped with the first sprocket 31, the reels 2 in the top second row are equipped with both the first sprocket 31 and the second sprocket 32, the four first sprockets 31 in the bottom are connected by the first chain 33, the three second sprockets 32 in the top are connected by the second chain 34, and the output shaft of the driving device 4 is coaxially connected to the reel 2 at the bottom, so that under the drive of the driving device 4, the reel 2 with the first sprocket 31 at the end of the shaft and the reel 2 with the second sprocket 32 ​​at the end of the shaft can rotate synchronously. It should be noted that the attached Figure 2 There are six reels 2. If the stage curtain is relatively large and has more hanging points, the mounting frame 11 can be enlarged accordingly, and then the number of reels 2 installed on the mounting frame 11 can be increased. At the same time, a sprocket wheel must be set at the shaft end of the added reel 2, and the added reel 2 is connected to the reel 2 originally installed on the mounting frame 11 through a chain, so that the added reel 2 and the reel 2 originally installed on the mounting frame 11 can rotate synchronously.

[0048] In this embodiment, through the synchronous cooperation of multiple groups of sprockets and chains, the synchronous rotation of all the reels 2 installed on the mounting frame 11 can be achieved under the drive of the driving device 4.

[0049] Furthermore, as attached Figure 1 As shown, a connection box 7 and a rotation limit switch 8 are arranged on one side of the driving device 4 .

[0050] Specifically, a wiring box 7 and a rotation limit switch 8 are provided on one side of the driving device 4. The wiring box 7 is provided with a large wiring port and a small wiring port. The large wiring port is the input port of the power line, and the small wiring port is the input port of the brake wire connected to the tail of the motor. A rotation limit switch 8 is also provided on one side of the driving device 4. The rotation limit switch 8 is a switch of the driving motor 41, which is used to control the power off and on of the driving motor 41. When the drum 2 rotates until the connecting rope 9 is completely released, the rotation limit switch 8 will be triggered. Under the control of the control system, the rotation limit switch 8 will be powered off, and the driving motor 41 will stop, that is, the stage winch will stop the winching action.

[0051] In this embodiment, a wiring box 7 is provided on one side of the driving device 4 to facilitate cable connection of the driving device 4 ; a rotation limit switch 8 is provided on one side of the driving device 4 to facilitate control of the driving device 4 .

[0052] Furthermore, the reel 2 includes a cylinder body for winding the connecting rope 9 , and a rope groove adapted to the connecting rope 9 is provided on the cylinder body.

[0053] Specifically, the drum 2 includes a cylinder for winding the connecting rope 9, and a rope head fixing structure is provided at one end of the drum. The rope head fixing structure can be a ring body connected to the drum, and the rope head fixing structure is used to fix the starting end of the connecting rope 9 to prevent the connecting rope 9 from slipping out; the drum is also provided with a rope groove adapted to the connecting rope 9. The purpose of setting the rope groove on the drum is to fix the connecting rope 9, ensure that the connecting rope 9 is evenly wound on the drum 2, and avoid the connecting rope 9 from crossing or sagging. The rope groove can help the connecting rope 9 maintain the correct position, prevent entanglement and entanglement during use, and ensure safety and stability during the lifting process. The rope groove can also reduce the friction between the connecting rope 9 and the drum, reduce the wear of the connecting rope 9, and extend the service life.

[0054] In this embodiment, by providing a rope groove adapted to the connecting rope 9 on the cylinder of the drum 2, it helps to maintain the tension of the connecting rope 9 and the interlayer gap, ensuring the normal operation of the winch. At the same time, it can also reduce the friction between the connecting rope 9 and the cylinder, reduce the wear of the connecting rope 9, and extend the service life.

[0055] Furthermore, as attached Figure 3 As shown, one end of the connecting rope 9 is connected to the cylinder, and the other end of the connecting rope 9 is connected to the suspension rod a connected to the curtain.

[0056] Specifically, one end of the connecting rope 9 is connected to the cylinder of the reel 2, and the other end of the connecting rope 9 is connected to the suspension rod a connected to the curtain. Since the transmission structure 3 of multiple reels 2 is connected, the output shaft of the driving device 4 is coaxially connected to one of the reels 2, and the driving device 4 is connected to the control system, thus, when the control system controls the driving device 4, the driving device 4 will drive the reel 2 coaxially connected to the driving device 4, and then the reel 2 coaxially connected to the driving device 4 and the transmission structure 3 drive all the reels 2 installed on the mounting frame 11 to rotate synchronously, and through the synchronous rotation of all the reels 2, the connecting rope 9 provided on the reel 2 will drive the suspension rod a connected to the curtain to rise and fall.

[0057] In this embodiment, the curtain can be raised and lowered by connecting one end of the connecting rope 9 to the cylinder of the reel 2 and the other end of the connecting rope 9 to the suspension rod a connected to the curtain.

[0058] Furthermore, as attached Figure 3 As shown, a guide pulley b for guiding the connecting rope 9 is provided between the drum 2 and the boom a.

[0059] Specifically, a guide pulley b is provided between the drum 2 and the suspension rod a for guiding the connecting rope 9. The guide pulley b can be installed on the ceiling of the building, or the guide pulley b can be connected to a connecting structure provided on the building beam. The connecting rope 9 provided on the drum 2 is connected to the guide pulley b, and is connected to the suspension rod a connected to the curtain. Thus, the guide pulley b can guide the movement direction of the connecting rope 9, ensure that the connecting rope 9 can pass smoothly during the operation of the stage winch, and reduce friction and loss of the connecting rope 9.

[0060] In this embodiment, by providing a guide pulley b, the multiple connecting ropes 9 provided on the multiple drums 2 have a guiding structure during the retraction / release process, and the movement trajectory of the connecting ropes 9 is effectively controlled and guided, thereby ensuring that the function of the stage winch to raise and lower the curtain can be carried out smoothly and efficiently.

[0061] Furthermore, as attached Figure 3 As shown, the guide pulley b includes a first guide pulley i and a second guide pulley ii. The first guide pulley i is provided with a plurality of wheel grooves, and the second guide pulley ii is provided with one wheel groove.

[0062] Specifically, the guide pulley b for guiding the connecting rope 9 includes a first guide pulley i for concentrating the connecting rope 9 and a plurality of second guide pulleys ii for dispersed guidance, wherein the first guide pulley i is provided with a plurality of wheel grooves for concentrating the plurality of connecting ropes 9 arranged on a plurality of drums 2, and the second guide pulley ii is provided with a wheel groove, and the connecting rope 9 arranged on a drum 2 is first connected to a wheel groove of the first guide pulley i, passes through the first guide pulley i and then is connected to the second guide pulley ii, and finally is connected to the suspension rod a connected to the curtain. At the same time, multiple connecting ropes 9 are guided and supported to ensure that they can move evenly and smoothly when the winch is operated. Through the setting of the wheel groove, each connecting rope 9 can be guided individually, thereby avoiding mutual interference and crossing between multiple connecting ropes 9. This helps to reduce friction and wear between the connecting ropes 9, and can ensure that each connecting rope 9 maintains appropriate tension and clearance during the winding and lifting process. In addition, the setting of the wheel groove can better support the connecting rope 9, ensuring that it will not produce excessive bending or twisting during the operation of the winch, reducing fatigue damage to the connecting rope 9 and extending the service life of the connecting rope 9.

[0063] In this embodiment, the first guide pulley i is provided with a plurality of wheel grooves for connecting the plurality of connecting ropes 9, which can effectively ensure the smooth movement and stable support of the plurality of connecting ropes 9 during the operation of the winch.

[0064] In summary, through the above embodiments, the stage winch is replaced by a plurality of short drums 2 to replace the long drum consistent with the length of the curtain in the prior art, and the plurality of short drums 2 are arranged in a stacked manner on a vertical plane. At this time, the plurality of short drums 2 are parallel to each other, and the plurality of short drums 2 are synchronously rotated under the action of the transmission structure 3 and the drive device 4, which can facilitate the arrangement of the stage winch in a limited space. The stage winch is arranged on the side of the building beam and supported by the building beam, and has better force. When the stage winch fails, it is also convenient for the staff to carry out maintenance work.

[0065] The terms "vertical", "lateral", "front", "rear", etc. mentioned in the embodiments of the present invention indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be further explained that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like in the description should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A stage winch, characterized in that: include: A support structure (1), the support structure (1) comprising a mounting frame (11) and a support seat (12), the mounting frame (11) being connected to the support seat (12); A reel (2), the reel (2) being mounted on the mounting frame (11) via a rotating shaft, the reel (2) being provided with a connecting rope (9), and the reel (2) being used for retracting and releasing the connecting rope (9); a transmission structure (3), the transmission structure (3) being arranged at an axial end of the reel (2), a plurality of the reels (2) being connected via the transmission structure (3), and the plurality of the reels (2) being able to rotate synchronously via the transmission structure (3); A driving device (4), the driving device (4) being mounted on the mounting frame (11), the output shaft of the driving device (4) being coaxially connected to one of the reels (2), and the driving device (4) being connected to a control system.

2. A stage winch according to claim 1, characterized in that: The mounting frame (11) is further provided with an anti-tangling rope structure (5), the anti-tangling rope structure (5) being arranged adjacent to the reel (2), and the anti-tangling rope structure (5) being connected to a control system.

3. A stage winch according to claim 1, characterized in that: The driving device (4) comprises a driving motor (41) and a reducer (42); the driving motor (41) is connected to the reducer (42); and the reducer (42) is coaxially connected to the reel (2) at the bottom.

4. A stage winch according to claim 1, characterized in that: The mounting frame (11) is provided with a side plate (6) for mounting the driving device (4), and the side plate (6) is provided with a through hole allowing an output shaft of the driving device (4) to pass through.

5. A stage winch according to claim 1, characterized in that: The transmission structure (3) comprises a first sprocket (31), a second sprocket (32), a first chain (33) and a second chain (34); all of the first sprockets (31) are connected to the first chain (33), all of the second sprockets (32) are connected to the second chain (34), and the shaft end of at least one of the reels (2) is provided with both the first sprocket (31) and the second sprocket (32).

6. A stage winch according to claim 1, characterized in that: A wiring box (7) and a rotation limit switch (8) are provided on one side of the driving device (4).

7. A stage winch according to claim 1, characterized in that: The reel (2) comprises a cylinder body for winding the connecting rope (9), and the cylinder body is provided with a rope groove adapted to the connecting rope (9).

8. A stage hoist according to claim 7, characterized in that: One end of the connecting rope (9) is connected to the cylinder, and the other end of the connecting rope (9) is connected to a suspension rod (a) connected to the curtain.

9. A stage winch according to claim 8, characterized in that: A guide pulley (b) for guiding the connecting rope (9) is provided between the drum (2) and the suspension rod (a).

10. A stage winch according to claim 9, characterized in that: The guide pulley (b) comprises a first guide pulley (i) and a second guide pulley (ii), wherein the first guide pulley (i) is provided with a plurality of wheel grooves, and the second guide pulley (ii) is provided with one wheel groove.

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