Heavy-load hoisting device applied to stage equipment

Abstract

The invention relates to the technical field of lifting equipment, in particular to a heavy-load hoisting device applied to stage equipment, which comprises two tracks, a walking outer frame, a hoisting mechanism and a linkage mechanism, the tracks are arranged on the top side of a stage, the walking outer frame is arranged on the top side of the tracks, and the hoisting mechanism is arranged on the top side of the track. Walking mechanisms for controlling the walking outer frame to move are arranged on the two sides of the walking outer frame. Through the arrangement of the rails, articles can be conveniently hoisted to a designated place by the walking outer frame, unloading and loading are completed, lifting of stage equipment is controlled through the hoisting mechanism, through lateral transmission between the linkage mechanism and the hoisting mechanism, the L-shaped plates are controlled to move and open towards the two sides in the hoisting process, normal hoisting of the articles cannot be disturbed, and when the articles are hoisted to the top end, the hoisting efficiency is greatly improved. The hydraulic rod controls the driving gear to be separated from the driven gear, the L-shaped plates on the two sides are reset and folded, a bottom support is formed, a supporting landing point for unloading is provided for workers, and the safety of the workers during unloading is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, and in particular to a heavy-load lifting device used in stage equipment. Background Art

[0002] Stage equipment refers to various equipment fixed on the stage for theatrical performances, with scenery equipment being the most numerous, in addition there are lighting equipment, sound effects equipment, stunt equipment, etc. In theaters performing repertoires, there are sometimes special equipment used specifically for special repertoires, and the layout of these equipment often requires hoisting to high altitudes for installation.

[0003] At present, when stage equipment is hoisted to a high altitude, a hoisting machine is often required to hoist the equipment to a designated high altitude location along a pre-arranged installation track, and then the equipment is unloaded and installed manually. However, when unloading, both workers and goods are in a suspended state, which leads to a greater risk of installation. Both people and objects are prone to fall during unloading, which poses a certain safety risk. In addition, the hoisting device needs to be lubricated regularly, and workers are required to climb to the hoisting device to spray lubricant, which poses a risk of falling and is cumbersome to operate. Therefore, the hoisting device needs to be improved. Summary of the invention

[0004] In order to solve the problem of poor safety of lifting and unloading and lubricating lifting devices, the present invention provides a heavy-load lifting device used in stage equipment.

[0005] The heavy-load lifting device used in stage equipment provided by the present invention adopts the following technical solution: A heavy-load lifting device used in stage equipment, comprising: Tracks, the tracks are arranged on the top side of the stage, and two tracks are arranged; A walking outer frame, wherein the walking outer frame is arranged on the top side of the track, and walking mechanisms for controlling the movement of the walking outer frame are arranged on both sides of the walking outer frame, a sliding rod is slidably connected to the walking outer frame, one end of the sliding rod is fixedly connected to an L-shaped plate, the top end of the walking outer frame is fixedly connected to a vertical plate, and one side of the vertical plate is fixedly connected to a cavity-shaped partition block; A lifting mechanism, wherein the lifting mechanism is installed between two vertical plates; The linkage mechanism is arranged between the lifting mechanism and the L-shaped plate, and the linkage mechanism includes a special-shaped rotating rod, a driving gear, a hydraulic rod and a synchronous rotating rod. The special-shaped rotating rod is synchronously transmitted with the lifting mechanism, and the driving gear is coaxially movably connected with the special-shaped rotating rod. A ring-shaped groove is arranged on the side of the driving gear close to the hydraulic rod, and the fixed end of the hydraulic rod is fixedly connected to the outer wall of the vertical plate, and the output end is movably engaged with the ring-shaped groove. The synchronous rotating rod is rotatably connected with the partition block, and the outer side of the synchronous rotating rod is coaxially fixedly connected with a driven gear meshing with the driving gear, and a worm is coaxially fixedly connected on the synchronous rotating rod, and a shaft rod is rotatably connected in the partition block, and a worm wheel and a linkage gear are coaxially fixedly connected on the shaft rod, and a tooth plate slidably connected to the partition block is meshed on the bottom side of the linkage gear, and a bottom end of one side of the tooth plate is fixedly connected to the L-shaped plate; A lubricating mechanism, which is arranged on the vertical plate and the partition block, and is transmission-connected to the driving gear; A lubricant box is fixedly connected to the inner wall of the partition block, and a discharge pipe is provided between the output end of the lubricant box and the lifting mechanism.

[0006] By adopting the above technical solution, the track is set up to facilitate the walking frame to lift the items to the designated location to complete the unloading. The lifting of the stage equipment is controlled by the lifting mechanism. The side transmission between the linkage mechanism and the lifting mechanism is used to control the L-shaped plate to move and open to both sides during the lifting process, which will not interfere with the normal lifting of the items. When the items are lifted to the top, the hydraulic rod controls the driving gear to disengage from the driven gear, and the L-shaped plates on both sides are reset and closed to form a bottom support, providing workers with a support landing point for unloading, thereby improving the safety of workers when unloading.

[0007] Optionally, the walking mechanism includes a walking motor and walking wheels, the walking motor is fixedly connected to the outer wall of the walking outer frame, the output shaft of the walking motor is fixedly connected to the walking wheels, a support rod is fixedly connected in the track, and the walking wheels are slidably connected to the support rod.

[0008] By adopting the above technical solution, the travel motor provides rotational power to the travel wheels, and the support rods support and constrain the travel wheels, thereby ensuring that the lifting device can slide stably.

[0009] Optionally, at least two lifting mechanisms are provided and are respectively located on both sides of the partition block. The lifting mechanism includes a lifting motor, a reducer, a winding wheel and a steel rope. The lifting motor is fixedly connected to the vertical plate, and its output shaft is transmission connected to the reducer. The output end of the reducer is transmission connected to one end of the winding wheel. The other end of the winding wheel is rotatably connected to the vertical plate, and passes through the vertical plate and is coaxially fixedly connected to the special-shaped rotating rod. A roller is suspended on the steel rope, and a hook is provided at the bottom end of the roller.

[0010] By adopting the above technical solution, the hoisting motor provides power for the twisting wheel to rotate, the reducer controls the rotation speed of the twisting wheel, and the stage equipment is hoisted by the hook.

[0011] Optionally, a plurality of plug blocks are fixedly connected to the bottom of one of the L-shaped plates, and a plug hole adapted to the plug blocks is provided at the bottom of the other L-shaped plate.

[0012] By adopting the above technical solution, through the adaptation between the plug block and the plug hole, the stability of the connection between the two L-shaped plates when closed is strengthened, and the stability of the device during operation is further improved.

[0013] Optionally, a return spring is fixedly connected between the worm and the inner wall of the synchronous rotating rod.

[0014] By adopting the above technical solution, the reset spring facilitates the reset of the driven gear after the driving gear is separated from the driven gear, drives the tooth plate to move, and controls the two L-shaped plates to close.

[0015] Optionally, both ends of the tooth plate are fixedly connected to limit plates, and the height of the limit plates is higher than the tooth surface height of the tooth plate.

[0016] By adopting the above technical solution and setting the limit plate, the sliding of the tooth plate is restricted to prevent the tooth plate from being separated from the linkage gear, and the device has a simple structure and is easy to repair.

[0017] Optionally, a projection of the worm in the vertical direction is perpendicular to the shaft.

[0018] By adopting the above technical solution, it is ensured that the tooth plate can slide horizontally stably.

[0019] Optionally, the outer diameter of the driving gear is smaller than the outer diameter of the driven gear.

[0020] By adopting the above technical solution, the driven gear is decelerated and the distance is increased, making the structure more compact.

[0021] Optionally, the lubrication mechanism includes a driven rotating rod, a connecting gear, an inner rotating rod, a first auxiliary gear and a second auxiliary gear. The driven rotating rod is rotatably connected to the outer wall of the vertical plate, the connecting gear is coaxially and fixedly connected to the driven rotating rod, both ends of the inner rotating rod are rotatably connected inside the partition block, a pulley group is arranged between the inner rotating rod and the driven rotating rod, a connecting pipe is fixedly connected to the outer wall of the lubricant box, the middle part of the connecting pipe is coaxially rotatably connected to the second auxiliary gear, the outer wall of the inner rotating rod is coaxially fixedly connected to the first auxiliary gear which meshes with the second auxiliary gear for transmission, and the inner wall of the second auxiliary gear is fixedly connected to a leak plate.

[0022] By adopting the above technical solution, the function of the driving gear is enriched, so that the lubrication operation of the reducer is completed when the driving gear is meshed with the connecting gear, thereby extending the service life of the lifting device.

[0023] Optionally, a hanging ring for hanging a connecting pipe is fixedly connected inside the partition block, and the connecting pipe is connected to the discharge pipe.

[0024] By adopting the above technical solution, the stability of the connecting pipe during operation is enhanced, thereby ensuring stable meshing between the first auxiliary gear and the second auxiliary gear.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The track is set to facilitate the walking frame to lift the items to the designated location and complete the unloading. The lifting of the stage equipment is controlled by the lifting mechanism. The side transmission between the linkage mechanism and the lifting mechanism is used to control the L-shaped plate to move and open to both sides during the lifting process, which will not interfere with the normal lifting of the items. When the items are lifted to the top, the hydraulic rod controls the driving gear to disengage from the driven gear, and the L-shaped plates on both sides are reset and closed to form a bottom support, providing workers with a support landing point for unloading, thereby improving the safety of workers when unloading; 2. A certain amount of lubricant is stored in the lubricant tank, and the lubrication mechanism is controlled by the movement of the active gear to complete the local lubrication of the lifting mechanism, enrich the functionality of the device, thereby effectively extending the service life of the device and meeting people's usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of a heavy-load lifting device used in stage equipment in this embodiment.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure from another perspective of a heavy-load lifting device used in stage equipment in this embodiment.

[0028] Figure 3 It is a side structural schematic diagram of a heavy-load lifting device used in stage equipment in this embodiment.

[0029] Figure 4 It is a schematic diagram of the local internal structure of the partition block in this embodiment.

[0030] Figure 5 yes Figure 1 Enlarged structural diagram at A in the middle.

[0031] Figure 6 yes Figure 2 Enlarged structural diagram at B in the middle.

[0032] Figure 7It is a schematic diagram of the second auxiliary gear structure of a heavy-load lifting device used in stage equipment in this embodiment.

[0033] 1. Track; 11. Support rod; 2. Travel frame; 21. Travel motor; 22. Travel wheel; 23. Slide bar; 24. L-shaped plate; 241. Insert block; 25. Vertical plate; 26. Separator block; 3. Lifting mechanism; 31. Lifting motor; 32. Speed ​​reducer; 33. Wire sheave; 34. Steel rope; 35. Roller; 36. Hook; 4. Linkage mechanism; 41. Special-shaped rotating rod; 42. Driving gear; 43. Hydraulic rod; 44. Synchronous rotating Rod; 45, driven gear; 46, return spring; 47, worm; 48, shaft; 481, worm wheel; 482, linkage gear; 49, tooth plate; 491, limit plate; 5, lubrication mechanism; 51, driven rotating rod; 52, connecting gear; 53, pulley set; 54, inner rotating rod; 55, first auxiliary gear; 56, connecting pipe; 57, second auxiliary gear; 571, leak plate; 58, discharge pipe; 6, lubricant box; 7, lifting ring. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-Figure 7 The present invention is described in further detail.

[0035] The embodiment of the invention discloses a heavy-load lifting device used in stage equipment.

[0036] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and 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 should not be understood as a limitation on the present invention.

[0037] Reference Figure 1-Figure 7 , a heavy-load lifting device used in stage equipment, comprising: Track 1: Track 1 is set on the top side of the stage. There are two tracks 1, which are convenient for the lifting device to move more stably. A walking outer frame 2 is arranged on the top side of the track 1, and walking mechanisms for controlling the movement of the walking outer frame 2 are arranged on both sides of the walking outer frame 2. A slide bar 23 is slidably connected to the walking outer frame 2, and one end of the slide bar 23 is fixedly connected to an L-shaped plate 24. A vertical plate 25 is fixedly connected to the top of the walking outer frame 2, and a cavity-shaped partition block 26 is fixedly connected to one side of the vertical plate 25; A lifting mechanism 3, which is installed between two vertical plates 25, and controls the lifting and lowering of the stage equipment; The linkage mechanism 4 is arranged between the lifting mechanism 3 and the L-shaped plate 24. The linkage mechanism 4 includes a special-shaped rotating rod 41, a driving gear 42, a hydraulic rod 43 and a synchronous rotating rod 44. The special-shaped rotating rod 41 is synchronously transmitted with the lifting mechanism 3, the driving gear 42 is coaxially movably connected with the special-shaped rotating rod 41, and a ring-shaped groove is arranged on the side of the driving gear 42 close to the hydraulic rod 43. The fixed end of the hydraulic rod 43 is fixedly connected with the outer wall of the vertical plate 25, and the output end is movably connected with the ring-shaped groove. The synchronous rotating rod 44 is rotatably connected with the partition block 26. Next, the outer side of the synchronous rotating rod 44 is coaxially fixedly connected with a driven gear 45 meshing with the driving gear 42, the synchronous rotating rod 44 is coaxially fixedly connected with a worm 47, the partition block 26 is rotatably connected with a shaft 48, the shaft 48 is coaxially fixedly connected with a worm wheel 481 and a linkage gear 482, the bottom side of the linkage gear 482 is meshed with a tooth plate 49 slidably connected with the partition block 26, the bottom end of one side of the tooth plate 49 is fixedly connected to the L-shaped plate 24, and a return spring 46 is fixedly connected between the worm 47 and the inner wall of the synchronous rotating rod 44; The lubricating mechanism 5 is arranged on the vertical plate 25 and the partition block 26. The lubricating mechanism 5 is in transmission connection with the driving gear 42. The lubricating mechanism 5 controls the spraying of the lubricant, thereby performing regular lubrication and maintenance on the lifting mechanism 3, without the need for manual climbing operation, thereby improving the safety of the operation; The lubricant box 6 is fixedly connected to the inner wall of the partition block 26 , and a discharge pipe 58 is provided between the output end of the lubricant box 6 and the lifting mechanism 3 , so as to store a certain amount of lubricant in the lubricant box 6 .

[0038] Specifically, situation one: during hoisting, the hoisting mechanism 3 hoists the stage equipment. During this process, the hydraulic rod 43 controls the driving gear 42 to mesh with the driven gear 45 and rotate. The driven gear 45 drives the synchronous rotating rod 44 to rotate, thereby driving the worm 47 to rotate. The worm 47 is connected to the worm wheel 481, and the worm 47 drives the linkage gear 482 to rotate synchronously. The linkage gear 482 meshes with the tooth plate 49, thereby controlling the horizontal movement of the L-shaped plate 24, so that the two L-shaped plates 24 move away from each other. When the hoisting reaches the highest point, the hydraulic rod 43 controls the driving gear 42 to disengage from the driven gear 45, and the synchronous rotating rod 44 rotates under the action of the reset spring 46, so that the linkage gear 482 meshes with the tooth plate 49 and drives the L-shaped plate 24 to slide and close, forming a support platform, which is convenient for the staff to safely unload the equipment. Situation 2: When lubrication is needed, the hydraulic rod 43 controls the driving gear 42 to move and engage with the connecting gear 52 in the lubrication mechanism 5, controls the discharge of the lubricant, and thus lubricates and maintains the reducer 32, effectively improving the service life of the device. The lubrication process does not require workers to climb up to handle it, thereby improving safety.

[0039] Reference Figure 1 and Figure 2 Specifically, in the embodiment of the present invention, the walking mechanism includes a walking motor 21 and a walking wheel 22. The walking motor 21 is fixedly connected to the outer wall of the walking outer frame 2, the output shaft of the walking motor 21 is fixedly connected to the walking wheel 22, the support rod 11 is fixedly connected in the track 1, and the walking wheel 22 is slidably connected to the support rod 11.

[0040] In the embodiment of the present invention, when in use, the travel motor 21 is started to control the travel wheel 22 to rotate, so as to realize the horizontal movement of the travel outer frame 2, so as to facilitate the lifting of the equipment to the designated location.

[0041] Reference Figure 3 Specifically, in the embodiment of the present invention, at least two lifting mechanisms 3 are provided, and are respectively located on both sides of the partition block 26. The lifting mechanism 3 includes a lifting motor 31, a reducer 32, a twisting wheel 33 and a steel rope 34. The lifting motor 31 is fixedly connected to the vertical plate 25, and its output shaft is transmission-connected to the reducer 32. The output end of the reducer 32 is transmission-connected to one end of the twisting wheel 33. The other end of the twisting wheel 33 is rotationally connected to the vertical plate 25, and passes through the vertical plate 25 and is coaxially fixedly connected to the special-shaped rotating rod 41. A roller 35 is suspended on the steel rope 34, and a hook 36 is provided at the bottom end of the roller 35.

[0042] In the embodiment of the present invention, the rotation of the winch wheel 33 is controlled by the lifting motor 31 and the reducer 32. When in use, the stage equipment is hung on the hook 36 with a rope, and the lifting motor 31 controls the rotation of the winch wheel 33 for lifting.

[0043] Reference Figure 1 and Figure 2 Specifically, in the embodiment of the present invention, a plurality of plug blocks 241 are fixedly connected to the bottom of one L-shaped plate 24 , and a plug hole adapted to the plug block 241 is opened at the bottom of another L-shaped plate 24 .

[0044] In the embodiment of the present invention, when the two L-shaped plates 24 are closed, the insert block 241 is inserted into the insert hole to improve the tightness of the connection between the two.

[0045] Reference Figure 4 Specifically, in the embodiment of the present invention, both ends of the tooth plate 49 are fixedly connected to the limit plates 491 , and the height of the limit plates 491 is higher than the tooth surface height of the tooth plate 49 .

[0046] In the embodiment of the present invention, the sliding of the tooth plate 49 is limited by the setting of the limit plate 491 to prevent the tooth plate 49 from being separated from the linkage gear 482, and the device has a simple structure and is easy to repair.

[0047] Reference Figure 4 Specifically, in the embodiment of the present invention, the projection of the worm 47 in the vertical direction is perpendicular to the shaft 48.

[0048] In the embodiment of the present invention, the position setting of the worm 47 and the shaft 48 ensures that the tooth plate 49 can slide horizontally stably.

[0049] Reference Figure 1 Specifically, in the embodiment of the present invention, the outer diameter of the driving gear 42 is smaller than the outer diameter of the driven gear 45 .

[0050] In the embodiment of the present invention, the driven gear 45 is decelerated and increased in distance by designing the dimensions of the driving gear 42 and the driven gear 45 , so that the structure is more compact.

[0051] Reference Figure 1-Figure 7 Specifically, in the embodiment of the present invention, the lubrication mechanism 5 includes a driven rotating rod 51, a connecting gear 52, an inner rotating rod 54, a first auxiliary gear 55 and a second auxiliary gear 57. The driven rotating rod 51 is rotatably connected to the outer wall of the vertical plate 25, the connecting gear 52 is coaxially fixedly connected to the driven rotating rod 51, both ends of the inner rotating rod 54 are rotatably connected inside the partition block 26, a pulley group 53 is arranged between the inner rotating rod 54 and the driven rotating rod 51, the outer wall of the lubricant box 6 is fixedly connected with a connecting pipe 56, the middle part of the connecting pipe 56 is coaxially rotatably connected with the second auxiliary gear 57, the outer wall of the inner rotating rod 54 is coaxially fixedly connected with the first auxiliary gear 55 meshing with the second auxiliary gear 57, and the inner wall of the second auxiliary gear 57 is fixedly connected with a leak plate 571. It should be noted that a baffle matching the shape of the leak plate 571 is arranged in the connecting pipe 56, and when the through hole is connected, the lubricant is discharged.

[0052] In the embodiment of the present invention, when lubricating, the hydraulic rod 43 controls the driving gear 42 to move and mesh with the connecting gear 52, the connecting gear 52 drives the driven rotating rod 51 to rotate, thereby driving the inner rotating rod 54 to rotate through the pulley group 53, and the inner rotating rod 54 drives the first auxiliary gear 55 to rotate, and the first auxiliary gear 55 is meshed with the second auxiliary gear 57 for transmission. When the leak plate 571 of the second auxiliary gear 57 is connected to the connecting pipe 56, the lubricant flows out from the lubricant box 6 and is discharged through the discharge pipe 58 to the reducer 32 for lubrication.

[0053] Reference Figure 4 Specifically, in the embodiment of the present invention, a hanging ring 7 for hanging a connecting pipe 56 is fixedly connected inside the partition block 26 , and the connecting pipe 56 is connected to the discharge pipe 58 .

[0054] In the embodiment of the present invention, the lifting ring 7 supports the connecting pipe 56 so as to ensure that the connecting pipe 56 works normally without affecting the rotation of the second auxiliary gear 57 .

[0055] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heavy-load lifting device used in stage equipment, characterized in that: include: A track (1), wherein the track (1) is arranged on the top side of the stage, and two tracks (1) are provided; A walking outer frame (2), the walking outer frame (2) being arranged on the top side of the track (1), walking mechanisms for controlling the movement of the walking outer frame (2) being arranged on both sides of the walking outer frame (2), a sliding rod (23) being slidably connected to the walking outer frame (2), one end of the sliding rod (23) being fixedly connected to an L-shaped plate (24), a top end of the walking outer frame (2) being fixedly connected to a vertical plate (25), and one side of the vertical plate (25) being fixedly connected to a cavity-shaped partition block (26); A lifting mechanism (3), wherein the lifting mechanism (3) is installed between two vertical plates (25); A linkage mechanism (4), the linkage mechanism (4) being arranged between the lifting mechanism (3) and the L-shaped plate (24), the linkage mechanism (4) comprising a special-shaped rotating rod (41), a driving gear (42), a hydraulic rod (43) and a synchronous rotating rod (44), the special-shaped rotating rod (41) being synchronously connected to the lifting mechanism (3), the driving gear (42) being coaxially movably connected to the special-shaped rotating rod (41), a ring-shaped groove being arranged on a side of the driving gear (42) close to the hydraulic rod (43), the fixed end of the hydraulic rod (43) being fixedly connected to the outer wall of the vertical plate (25), the output end being movably connected to the ring-shaped groove, the A synchronous rotating rod (44) is rotationally connected to the partition block (26); a driven gear (45) meshing with the driving gear (42) is coaxially fixedly connected to the outer side of the synchronous rotating rod (44); a worm (47) is coaxially fixedly connected to the synchronous rotating rod (44); a shaft (48) is rotationally connected inside the partition block (26); a worm wheel (481) and a linkage gear (482) are coaxially fixedly connected to the shaft (48); a tooth plate (49) slidably connected to the partition block (26) is meshedly connected to the bottom side of the linkage gear (482); and a bottom end of one side of the tooth plate (49) is fixedly connected to the L-shaped plate (24); A lubricating mechanism (5), the lubricating mechanism (5) being arranged on the vertical plate (25) and the partition block (26), the lubricating mechanism (5) being in driving connection with the driving gear (42); A lubricant box (6), the lubricant box (6) being fixedly connected to the inner wall of the partition block (26), and a discharge pipe (58) being provided between the output end of the lubricant box (6) and the lifting mechanism (3).

2. A heavy-load lifting device used in stage equipment according to claim 1, characterized in that: The walking mechanism comprises a walking motor (21) and walking wheels (22); the walking motor (21) is fixedly connected to the outer wall of the walking outer frame (2); the output shaft of the walking motor (21) is fixedly connected to the walking wheels (22); a support rod (11) is fixedly connected inside the track (1); and the walking wheels (22) are slidably connected to the support rod (11).

3. A heavy-load lifting device used in stage equipment according to claim 1, characterized in that: At least two lifting mechanisms (3) are provided and are respectively located on both sides of the partition block (26). The lifting mechanism (3) comprises a lifting motor (31), a reducer (32), a twisting wheel (33) and a steel rope (34). The lifting motor (31) is fixedly connected to the vertical plate (25), and its output shaft is transmission-connected to the reducer (32). The output end of the reducer (32) is transmission-connected to one end of the twisting wheel (33). The other end of the twisting wheel (33) is rotationally connected to the vertical plate (25) and penetrates the vertical plate (25) to be coaxially fixedly connected to the special-shaped rotating rod (41). A roller (35) is suspended on the steel rope (34), and a hook (36) is provided at the bottom end of the roller (35).

4. A heavy-load lifting device used in stage equipment according to claim 1, characterized in that: A plurality of plug blocks (241) are fixedly connected to the bottom of one of the L-shaped plates (24), and a plug hole adapted to the plug blocks (241) is provided at the bottom of the other L-shaped plate (24).

5. The heavy-load lifting device used in stage equipment according to claim 1, characterized in that: A return spring (46) is fixedly connected between the worm (47) and the inner wall of the synchronous rotating rod (44).

6. The heavy-load lifting device used in stage equipment according to claim 1, characterized in that: Both ends of the tooth plate (49) are fixedly connected to a limit plate (491), and the height of the limit plate (491) is higher than the height of the tooth surface of the tooth plate (49).

7. A heavy-load lifting device used in stage equipment according to claim 1, characterized in that: The projection of the worm (47) in the vertical direction is perpendicular to the shaft (48).

8. The heavy-load lifting device used in stage equipment according to claim 1, characterized in that: The outer diameter of the driving gear (42) is smaller than the outer diameter of the driven gear (45).

9. The heavy-load lifting device used in stage equipment according to claim 1, characterized in that: The lubricating mechanism (5) comprises a driven rotating rod (51), a connecting gear (52), an inner rotating rod (54), a first auxiliary gear (55) and a second auxiliary gear (57); the driven rotating rod (51) is rotatably connected to the outer wall of the vertical plate (25); the connecting gear (52) is coaxially fixedly connected to the driven rotating rod (51); both ends of the inner rotating rod (54) are rotatably connected inside the partition block (26); a pulley group (53) is provided between the inner rotating rod (54) and the driven rotating rod (51); the outer wall of the lubricant box (6) is fixedly connected to a connecting pipe (56); the middle part of the connecting pipe (56) is coaxially rotatably connected to the second auxiliary gear (57); the outer wall of the inner rotating rod (54) is coaxially fixedly connected to the first auxiliary gear (55) meshing with the second auxiliary gear (57); and the inner wall of the second auxiliary gear (57) is fixedly connected to a leaking plate (571).

10. The heavy-load lifting device used in stage equipment according to claim 1, characterized in that: A hanging ring (7) for hanging a connecting pipe (56) is fixedly connected inside the partition block (26), and the connecting pipe (56) is connected to the discharge pipe (58).

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