A new reliable hoisting structure of stage LED screen

Abstract

The application discloses a novel reliable hoisting structure of a stage LED screen and belongs to the technical field of hoisting equipment. The novel reliable hoisting structure of a stage LED screen comprises a workbench, a supporting frame installed above the workbench, a pulling mechanism installed above the workbench, a winch, a steel cable, a fixed pulley and a frame body. The winch is installed above the workbench. The steel cable is wound on the winch and wound outside the fixed pulley. The fixed pulley is fixedly connected below the supporting frame. One end of the steel cable is connected with the frame body. In the application, the LED screen body is first installed in the frame body in a horizontal state. Then the winch winds the steel cable. The frame body is rotated around the limiting shaft by using the steel cable to pull the frame body, so that the LED screen body is turned from the horizontal state to an installation angle. Meanwhile, the turning process of the frame body is limited by the cooperation of the first fixed plate, the limiting shaft and the second fixed plate, the turning hoisting of the LED screen is realized, and the stability in the hoisting process is improved.

Description

Technical Field

[0001] This invention belongs to the field of hoisting equipment technology, and in particular relates to a new type of reliable hoisting structure for stage LED screens. Background Technology

[0002] Stage LED screens are typically composed of multiple display modules spliced ​​together to form an overall screen. When setting up for large-scale performances, the LED screen needs to be installed in the frame first, and then the entire screen is lifted to the designated installation position through a hoisting structure. Currently, the existing stage LED screen hoisting process usually uses cranes, steel cables, and lifting tools to hoist the beams or frames on which the LED screen is installed. During the hoisting process, the frame is lifted by the lifting mechanism, and then the angle is adjusted and the installation is fixed.

[0003] However, existing hoisting structures usually require angle adjustment and position calibration after the LED screen is hoisted. During the adjustment process, the LED screen is suspended and is easily affected by the swing of the wire rope and external disturbances, causing the LED screen to sway and making it difficult to quickly complete the installation and positioning. At the same time, the LED screen mainly relies on the wire rope and lifting equipment for support during hoisting. When the hoisting height is high or the screen is suspended for a long time, the wire rope continuously bears a large tension, which can easily increase the load on the hoisting structure.

[0004] Based on this, the present invention designs a novel reliable hoisting structure for stage LED screens to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the problem that existing hoisting structures typically require angle adjustment and position calibration after the LED screen is hoisted. During the adjustment process, the LED screen is suspended and easily affected by the swing of the steel wire rope and external disturbances, causing the LED screen to sway and making it difficult to quickly complete the installation and positioning. Therefore, this invention proposes a new and reliable hoisting structure for stage LED screens.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A novel reliable hoisting structure for a stage LED screen includes a work platform and a support frame mounted above the work platform. A pulling mechanism is installed above the work platform, comprising a winch, a steel cable, a fixed pulley, and a frame. The winch is mounted above the work platform, and the steel cable is wound around the winch and around the fixed pulley. The fixed pulley is fixedly connected to the lower part of the support frame. One end of the steel cable is connected to the frame, and the frame is rotatably connected to the work platform. The LED screen body is installed inside the frame. A support mechanism connects the work platform and the frame. A braking mechanism is installed outside the pulling mechanism, and two buffer mechanisms are installed inside the frame.

[0008] As a further description of the above technical solution:

[0009] The pulling mechanism also includes a drive motor and a mounting frame. The drive motor is fixedly connected above the workbench. A large gear is installed at the output end of the drive motor, and a small gear meshes with the large gear. The mounting frame is fixedly connected above the workbench. Two winches are installed inside the mounting frame. The small gear is sleeved on the input end of the winch. The steel cable is wound around both winches.

[0010] As a further description of the above technical solution:

[0011] Each of the steel cables is equipped with a pull ring at one end, and a lifting ring is movably connected inside the pull ring. The same frame is installed below the two lifting rings. Two first fixing plates are installed on one side of the frame. The same limiting shaft is fixedly connected inside the two first fixing plates. Two second fixing plates are rotatably connected outside the limiting shaft. The two second fixing plates are fixedly connected to one side of the workbench.

[0012] As a further description of the above technical solution:

[0013] Adjustment plates are symmetrically installed inside the frame. The adjustment plates are connected to the frame by bolts. The bolts are used to adjust the position of the adjustment plates inside the frame. The LED screen body is installed in the space formed by the frame and the adjustment plates.

[0014] As a further description of the above technical solution:

[0015] The support mechanism includes two extension plates, which are symmetrically installed outside the workbench. A first hinge plate is installed above the extension plates. A support plate is rotatably connected inside the first hinge plate. A second hinge plate is rotatably connected to one side of the support plate. A slider is installed on one side of the second hinge plate and is slidably connected inside the frame.

[0016] As a further description of the above technical solution:

[0017] A movable block is installed outside the slider, and a limit rod is threadedly connected inside the movable block. Limit holes are opened at intervals in the frame along the sliding direction of the slider. The limit rod is locked in the limit hole corresponding to the current position of the movable block. A corresponding scale line is provided on one side of the limit hole.

[0018] As a further description of the above technical solution:

[0019] The braking mechanism includes a horizontal plate and an electromagnetic coil. The horizontal plate is fixedly connected to the lower part of the support frame. Two tension sensing wheels are installed below the horizontal plate. The steel cable is wound around the two tension sensing wheels. The electromagnetic coil is fixedly connected to the upper part of the worktable. An extension rod is installed outside the winch. Friction wheels are sleeved on the extension rod.

[0020] As a further description of the above technical solution:

[0021] Two brake arms are symmetrically arranged outside the electromagnetic coil. A magnetic block is provided at the end of the brake arm near the electromagnetic coil. A shaft is installed inside each brake arm. A vertical plate is rotatably connected to each shaft. The vertical plate is fixedly connected above the worktable. An arc-shaped friction block is installed inside each brake arm. Two arc-shaped friction blocks are symmetrically arranged outside the friction wheel.

[0022] As a further description of the above technical solution:

[0023] The buffer mechanism includes a connecting rod installed inside the frame. A sleeve plate is rotatably connected to the connecting rod. Two coil springs are sleeved on the connecting rod. One end of each coil spring is fixedly connected to the frame, and the other end is fixedly connected to the sleeve plate. The buffer mechanism also includes a swing shaft installed inside the frame via bearings. A swing plate is sleeved on the swing shaft, and a damper is installed below the swing plate. A base plate is sleeved below the damper.

[0024] As a further description of the above technical solution:

[0025] A top column is installed above the workbench, and a load-bearing plate is attached to one side of the top column. The load-bearing plate is installed on one side of the frame.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In this invention, by setting up a pulling mechanism, during installation, the LED screen body is first installed in a horizontal frame, and then a winch is used to wind up a steel cable. The steel cable pulls the frame to rotate around the limiting shaft, so that the LED screen body is flipped from a horizontal state to the installation angle. At the same time, the cooperation of the first fixing plate, the limiting shaft and the second fixing plate limits the frame flipping process, realizes the flipping and hoisting of the LED screen, and improves the stability during the hoisting process.

[0028] 2. In this invention, by setting up a support mechanism, auxiliary bearing is achieved after the frame is flipped. During the frame flipping process, the slider moves with the change of frame angle and drives the support plate to adjust synchronously through the second hinge plate. When the frame reaches the specified angle, the slider position is fixed by the cooperation of the limit rod and the limit hole, so that the support plate maintains the support state, thereby sharing the bearing pressure of the steel cable and improving the stability of the LED screen after installation.

[0029] 3. In this invention, an abnormal protection mechanism is set up to protect the hoisting process. The tension sensing wheel is used to detect the change in the force of the steel cable. When the steel cable has abnormal tension, the electromagnetic coil drives the brake arm to rotate, so that the arc-shaped friction block contacts the friction wheel and brakes the winch, so as to prevent the frame from moving rapidly due to abnormal steel cable and improve the hoisting safety.

[0030] 4. In this invention, a buffer mechanism is set up to protect the LED screen during the descent process. When the frame descends and approaches the ground, the swing plate, damper and base plate are automatically adjusted according to the frame angle to make the base plate fit with the ground. The damper absorbs the impact of descent, and the spring stores and releases the elastic torque to assist the mechanism in resetting, thereby reducing the collision damage to the LED screen. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of a novel reliable hoisting structure for a stage LED screen proposed in this invention.

[0032] Figure 2 This is a schematic diagram of the pulling mechanism for a novel reliable hoisting structure of a stage LED screen proposed in this invention;

[0033] Figure 3 This invention proposes a novel and reliable hoisting structure for stage LED screens. Figure 2 Enlarged structural diagram of section B;

[0034] Figure 4 This invention proposes a novel and reliable hoisting structure for stage LED screens. Figure 1 Enlarged structural diagram of section A;

[0035] Figure 5 This invention proposes a novel and reliable hoisting structure for stage LED screens. Figure 1 Enlarged structural diagram of section C;

[0036] Figure 6 This is a schematic diagram of the braking mechanism for a novel reliable hoisting structure of a stage LED screen proposed in this invention.

[0037] Figure 7This is a structural schematic diagram of the cross-section of a novel reliable hoisting structure frame for a stage LED screen proposed in this invention;

[0038] Figure 8 This invention proposes a novel and reliable hoisting structure for stage LED screens. Figure 7 A magnified structural diagram of part D in the middle.

[0039] Legend:

[0040] 1. Workbench; 2. Support frame; 3. Pulling mechanism; 301. Drive motor; 302. Large gear; 303. Mounting bracket; 304. Small gear; 305. Winch; 306. Steel cable; 307. Fixed pulley; 308. Pull ring; 309. Lifting ring; 310. Frame; 311. First fixed plate; 312. Second fixed plate; 313. Limiting shaft; 314. Adjusting plate; 315. LED screen body; 4. Support mechanism; 401. Extension plate; 402. First hinge plate; 403. Support plate; 404. Second hinge plate; 40 5. Slider; 406. Moving block; 407. Limiting rod; 408. Limiting hole; 409. Scale line; 5. Braking mechanism; 501. Horizontal plate; 502. Tension sensing wheel; 503. Electromagnetic coil; 504. Braking arm; 505. Arc-shaped friction block; 506. Shaft; 507. Vertical plate; 508. Extension rod; 509. Friction wheel; 6. Buffer mechanism; 601. Connecting rod; 602. Sleeve plate; 603. Coil spring; 604. Swing shaft; 605. Swing plate; 606. Damper; 607. Base plate; 7. Load-bearing plate; 8. Top column. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-8The present invention provides a technical solution comprising a workbench 1 and a support frame 2 mounted above the workbench 1. A pulling mechanism 3 is mounted above the workbench 1. The pulling mechanism 3 includes a winch 305, a steel cable 306, a fixed pulley 307, and a frame 310. The winch 305 is mounted above the workbench 1. The steel cable 306 is wound around the winch 305 and around the fixed pulley 307. The fixed pulley 307 is fixedly connected to the lower part of the support frame 2. One end of the steel cable 306 is connected to the frame 310. The frame 310 is rotatably connected to the workbench 1. An LED screen body 315 is installed inside the frame 310. A support mechanism 4 is connected between the workbench 1 and the frame 310. A braking mechanism 5 is mounted outside the pulling mechanism 3. Two buffer mechanisms 6 are installed inside the frame 310.

[0043] Specifically, such as Figures 1-3 As shown, the pulling mechanism 3 also includes a drive motor 301 and a mounting bracket 303. The drive motor 301 is fixedly connected above the workbench 1. A large gear 302 is installed at the output end of the drive motor 301, and a small gear 304 meshes with the large gear 302. The mounting bracket 303 is fixedly connected above the workbench 1. Two winches 305 are installed inside the mounting bracket 303. The small gear 304 is sleeved on the input end of the winches 305. Steel cables 306 are wound around both winches 305. A pull ring 308 is installed at one end of each steel cable 306. A lifting ring 309 is movably connected inside the pull ring 308. Two lifting rings 309 are connected to the pull ring 309. Below the ring 309, a frame 310 is installed; two first fixing plates 311 are installed on one side of the frame 310, and a limiting shaft 313 is fixedly connected inside the two first fixing plates 311. Two second fixing plates 312 are rotatably connected outside the limiting shaft 313. The two second fixing plates 312 are fixedly connected to one side of the workbench 1. Adjusting plates 314 are symmetrically installed inside the frame 310. The adjusting plates 314 are connected to the frame 310 by bolts. The bolts are used to adjust the position of the adjusting plates 314 inside the frame 310. The LED screen body 315 is installed in the space formed by the frame 310 and the adjusting plates 314.

[0044] Specifically, the pull ring 308 is movably sleeved on the outside of the lifting ring 309. When the steel cable 306 is subjected to traction, the pull ring 308 can change a certain angle relative to the lifting ring 309, so that the steel cable 306 can adapt to the change of connection angle during the rotation of the frame 310, reduce the lateral pull between the steel cable 306 and the connection position, and improve the flexibility of the hoisting connection.

[0045] The limiting shaft 313 is rotatably connected to the second fixed plate 312. When the frame 310 is pulled by the steel cable 306 for angle adjustment, the limiting shaft 313 can rotate within the second fixed plate 312 to limit the flipping center of the frame 310, so that the frame 310 always rotates along a fixed trajectory, thereby improving the stability during the flipping process.

[0046] Specifically, such as Figure 4 As shown, the support mechanism 4 includes two extension plates 401, which are symmetrically installed outside the workbench 1. A first hinge plate 402 is installed above the extension plates 401. A support plate 403 is rotatably connected inside the first hinge plate 402. A second hinge plate 404 is rotatably connected to one side of the support plate 403. A slider 405 is installed on one side of the second hinge plate 404. The slider 405 is slidably connected inside the frame 310. A moving block 406 is installed outside the slider 405. A limit rod 407 is threaded inside the moving block 406. Limit holes 408 are opened at intervals inside the frame 310 along the sliding direction of the slider 405. The limit rod 407 is locked in the limit hole 408 corresponding to the current position of the moving block 406. A corresponding scale line 409 is provided on one side of the limit hole 408.

[0047] Specifically, when the frame 310 is pulled and flipped by the steel cable 306, the slider 405 can slide along the inside of the frame 310 and drive the second hinge plate 404 to move synchronously, so that the support mechanism 4 can automatically adjust the support position as the angle of the frame 310 changes, ensuring that the support mechanism 4 always remains connected to the frame 310; the support plate 403 is rotatably connected to the extension plate 401 through the first hinge plate 402. When the support mechanism 4 is driven by the frame 310, the support plate 403 can change its angle around the first hinge plate 402, so that the support plate 403 gradually unfolds and supports the frame 310, reducing the continuous tension of the frame 310 on the steel cable 306;

[0048] After the limiting rod 407 is inserted into the corresponding limiting hole 408, it can restrict the slider 405 from continuing to move along the frame 310, so that the support plate 403 maintains the current unfolding angle, thereby transferring part of the load on the frame 310 to the support mechanism 4 and reducing the tension that the steel cable 306 bears for a long time.

[0049] Specifically, such as Figures 5-6 As shown, the braking mechanism 5 includes a horizontal plate 501 and an electromagnetic coil 503. The horizontal plate 501 is fixedly connected to the lower part of the support frame 2. Two tension sensing wheels 502 are installed below the horizontal plate 501. A steel cable 306 is wound around the two tension sensing wheels 502. The electromagnetic coil 503 is fixedly connected to the upper part of the worktable 1. An extension rod 508 is installed outside the winch 305. A friction wheel 509 is sleeved on the extension rod 508. Two brake arms 504 are symmetrically arranged outside the electromagnetic coil 503. A magnetic block is provided at one end of the brake arm 504 near the electromagnetic coil 503. A shaft 506 is installed inside each brake arm 504. A vertical plate 507 is rotatably connected to each shaft 506. The vertical plate 507 is fixedly connected to the upper part of the worktable 1. An arc-shaped friction block 505 is installed inside each brake arm 504. The two arc-shaped friction blocks 505 are symmetrically arranged outside the friction wheel 509.

[0050] Specifically, the steel cable 306 is wound around the outside of the tension sensing wheel 502. When the winch 305 retracts or extends the steel cable 306, the tension sensing wheel 502 can perform corresponding actions as the tension of the steel cable 306 changes, thereby reflecting the stress state of the steel cable 306 in real time and providing a basis for subsequent braking protection.

[0051] When the electromagnetic coil 503 is energized, it generates a magnetic attraction, causing the two brake arms 504 to move closer to each other or move, thereby driving the arc-shaped friction block 505 installed in the brake arm 504 to move towards the friction wheel 509, thus realizing the braking action.

[0052] The tension sensing wheel 502 includes a rotating wheel, a mounting shaft, and an elastic support assembly. The rotating wheel is rotatably connected to the lower part of the horizontal plate 501 via the mounting shaft. An elastic support assembly is provided between the mounting shaft and the horizontal plate 501, allowing the tension sensing wheel 502 to move within a certain range in the vertical direction under the tension of the steel cable 306. When the steel cable 306 is in a normal tensioned state, the steel cable 306 applies a stable pressure to the tension sensing wheel 502, keeping the tension sensing wheel 502 in a preset working position. When the steel cable 306 is subjected to abnormal tension or the tension decreases, the force applied by the steel cable 306 to the tension sensing wheel 502 changes, causing the tension sensing wheel 502 to move against the elastic force of the elastic support assembly.

[0053] After the arc-shaped friction block 505 comes into contact with the friction wheel 509, the friction force generated between the two reduces the rotation speed of the friction wheel 509, causing the winch 305 to stop continuing to wind up and unwind the steel cable 306, thereby preventing the frame 310 from falling rapidly due to loss of control.

[0054] Specifically, such as Figures 7-8 As shown, the buffer mechanism 6 includes a connecting rod 601, which is installed inside the frame 310. A sleeve plate 602 is rotatably connected to the connecting rod 601. Two coil springs 603 are sleeved on the connecting rod 601. One end of the coil spring 603 is fixedly connected inside the frame 310, and the other end of the coil spring 603 is fixedly connected inside the sleeve plate 602. The buffer mechanism 6 also includes a swing shaft 604, which is installed inside the frame 310 through a bearing. A swing plate 605 is sleeved on the swing shaft 604. A damper 606 is installed below the swing plate 605. A base plate 607 is sleeved below the damper 606. A top column 8 is installed above the workbench 1. A load-bearing plate 7 overlaps one side of the top column 8 and is installed on one side of the frame 310.

[0055] Specifically, when the base plate 607 contacts the ground and is subjected to pressure from the frame 310, the base plate 607 pushes the damper 606 to contract. The damper 606 consumes the impact energy during the descent through internal damping, reducing the impact force transmitted to the LED screen body 315.

[0056] When the frame 310 descends close to the ground, the swing plate 605 can rotate around the swing axis 604, so that the damper 606 and the base plate 607 installed below the swing plate 605 can adjust their positions according to the tilt angle of the frame 310, thereby ensuring that the base plate 607 can gradually fit into the bearing surface.

[0057] When the sleeve plate 602 rotates, it causes the coil spring 603 to undergo torsional deformation, allowing the coil spring 603 to store elastic potential energy; when the external impact disappears, the coil spring 603 releases its elastic force to drive the sleeve plate 602 back to its initial position, so that the buffer mechanism 6 can be reused.

[0058] The coil spring 603 is selected according to the size of the buffer mechanism 6 and the weight of the frame 310 to maintain a certain preload torque in the initial state. For example, the initial torque of the coil spring 603 is set to 5 to 15 Nm to ensure that the buffer mechanism 6 has a stable holding force when it is in the retracted state. When the swing plate 605 pushes the sleeve plate 602 to rotate, the coil spring 603 generates a restoring torque in the range of 20 to 50 Nm as the rotation angle increases, thereby providing sufficient reset effect after the frame 310 has descended, so that the sleeve plate 602 can drive the swing plate 605 to return to the initial position.

[0059] Working principle and usage:

[0060] When using the reliable hoisting structure of this stage LED screen, first adjust the frame 310 to a horizontal position, creating an installation space inside the frame 310 that facilitates the installation of the LED screen body 315. Then, by adjusting the position of the adjusting plate 314 inside the frame 310, an installation area matching the size of the LED screen body 315 is formed between the adjusting plate 314 and the frame 310. Bolts are then used to fix the position of the adjusting plate 314, thus stably installing the LED screen body 315 inside the frame 310. After assembly, start the drive motor 301. The drive motor 301 drives the large gear 302 to rotate. Since the large gear 302 meshes with the small gear 304, the small gear 304 rotates synchronously, driving two winches. Simultaneously operating, the winch 305 rotates to wind up the steel cable 306, causing it to pass over the fixed pulley 307 and pull the lifting ring 309 and pull ring 308 connected to the frame 310. This causes the frame 310 to rotate around the connection position between the limiting shaft 313 and the second fixed plate 312, gradually flipping the frame 310 and the internal LED screen body 315 from a horizontal state to a near-vertical state. During the flipping process of the frame 310, the first fixed plate 311 drives the limiting shaft 313 to rotate synchronously. The rotational connection between the limiting shaft 313 and the second fixed plate 312 limits the movement trajectory of the frame 310, improving the stability of the frame 310 during the flipping process. As the angle of the frame 310 continuously changes... The support mechanism 4, installed between the frame 310 and the worktable 1, operates synchronously. The slider 405 slides inside the frame 310, causing the second hinge plate 404 to rotate. This causes the second hinge plate 404 to rotate the support plate 403 around the first hinge plate 402, adjusting its angle. The support plate 403 gradually unfolds and provides auxiliary support to the frame 310. When the frame 310 is rotated to the designated installation angle, the limiting rod 407 inside the moving block 406 is rotated, causing it to move along the threaded direction and insert into the corresponding limiting hole 408. This fixes the position of the slider 405, maintaining the support plate 403 in its current support state. This transfers part of the load from the steel cable 306 to the support mechanism 4, raising the frame 310. 0 and the stability of the LED screen body 315 after installation; during the hoisting process, the steel cable 306 is wrapped around the outside of the tension sensing wheel 502. The tension sensing wheel 502 detects the tension of the steel cable 306. When the steel cable 306 is under abnormal force, the electromagnetic coil 503 is activated, which drives the two brake arms 504 to rotate around the shaft 506. The brake arms 504 drive the arc-shaped friction block 505 to move towards the friction wheel 509 and contact the friction wheel 509 installed on the outside of the winch 305 to generate frictional resistance, thereby limiting the winch 305 from continuing to rotate. This achieves braking protection for the winding and unwinding of the steel cable 306 and prevents the frame 310 from rapidly descending or tipping over due to abnormality of the steel cable 306.When the LED screen needs to be disassembled and lowered, the limiting state of the support mechanism 4 is released, allowing the frame 310 to gradually descend under the action of the steel cable 306. As the angle between the frame 310 and the ground gradually decreases, the swing plate 605 installed inside the frame 310 rotates through the swing shaft 604, causing the base plate 607 to gradually adjust to a position in contact with the ground. Simultaneously, the base plate 607, under pressure, pushes the damper 606 to contract, absorbing the impact force generated during the descent of the frame 310. Furthermore, the swing plate 605 drives the sleeve plate 602 to rotate around the connecting rod 601, causing the sleeve plate 602 to apply force to the coil spring 603. The elastic restoring force of the coil spring 603 assists the buffer mechanism 6 in resetting, thereby reducing the impact during the descent and placement of the LED screen body 315 and improving the safety of the LED screen hoisting, installation, and disassembly processes.

[0061] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A novel reliable hoisting structure for a stage LED screen, comprising a workbench (1) and a support frame (2) mounted above the workbench (1), characterized in that, A pulling mechanism (3) is installed above the workbench (1). The pulling mechanism (3) includes a winch (305), a steel cable (306), a fixed pulley (307), and a frame (310). The winch (305) is installed above the workbench (1). The steel cable (306) is wound around the winch (305) and around the fixed pulley (307). The fixed pulley (307) is fixedly connected to the bottom of the support frame (2). One end of the steel cable (306) is connected to the frame (310). The frame (310) is rotatably connected to the workbench (1). An LED screen body (315) is installed inside the frame (310). A support mechanism (4) is connected between the workbench (1) and the frame (310). A braking mechanism (5) is installed outside the pulling mechanism (3). Two buffer mechanisms (6) are installed inside the frame (310).

2. The novel reliable hoisting structure for a stage LED screen according to claim 1, characterized in that, The pulling mechanism (3) also includes a drive motor (301) and a mounting bracket (303). The drive motor (301) is fixedly connected above the workbench (1). A large gear (302) is installed at the output end of the drive motor (301). A small gear (304) meshes with the large gear (302). The mounting bracket (303) is fixedly connected above the workbench (1). Two winches (305) are installed inside the mounting bracket (303). The small gear (304) is sleeved on the input end of the winches (305). The steel cable (306) is wound on both winches (305).

3. The novel reliable hoisting structure for a stage LED screen according to claim 2, characterized in that, Each of the steel cables (306) is equipped with a pull ring (308) at one end, and a lifting ring (309) is movably connected inside the pull ring (308). The same frame (310) is installed below the two lifting rings (309). Two first fixing plates (311) are installed on one side of the frame (310). The same limiting shaft (313) is fixedly connected inside the two first fixing plates (311). Two second fixing plates (312) are rotatably connected outside the limiting shaft (313). The two second fixing plates (312) are fixedly connected to one side of the workbench (1).

4. The novel reliable hoisting structure for a stage LED screen according to claim 3, characterized in that, Adjustment plates (314) are symmetrically installed inside the frame (310). The adjustment plates (314) are connected to the frame (310) by bolts. The bolts are used to adjust the position of the adjustment plates (314) inside the frame (310). The LED screen body (315) is installed in the space formed by the frame (310) and the adjustment plates (314).

5. The novel reliable hoisting structure for a stage LED screen according to claim 1, characterized in that, The support mechanism (4) includes two extension plates (401), which are symmetrically installed outside the workbench (1). A first hinge plate (402) is installed above the extension plate (401). A support plate (403) is rotatably connected inside the first hinge plate (402). A second hinge plate (404) is rotatably connected to one side of the support plate (403). A slider (405) is installed on one side of the second hinge plate (404). The slider (405) is slidably connected inside the frame (310).

6. The novel reliable hoisting structure for a stage LED screen according to claim 5, characterized in that, A movable block (406) is installed outside the slider (405). A limit rod (407) is threadedly connected inside the movable block (406). Limit holes (408) are opened at intervals inside the frame (310) along the sliding direction of the slider (405). The limit rod (407) is locked in the limit hole (408) corresponding to the current position of the movable block (406). A corresponding scale line (409) is provided on one side of the limit hole (408).

7. The novel reliable hoisting structure for a stage LED screen according to claim 2, characterized in that, The braking mechanism (5) includes a horizontal plate (501) and an electromagnetic coil (503). The horizontal plate (501) is fixedly connected to the lower part of the support frame (2). Two tension sensing wheels (502) are installed below the horizontal plate (501). The steel cable (306) is wound around the two tension sensing wheels (502). The electromagnetic coil (503) is fixedly connected to the upper part of the workbench (1). An extension rod (508) is installed outside the winch (305). A friction wheel (509) is sleeved on the extension rod (508).

8. The novel reliable hoisting structure for a stage LED screen according to claim 7, characterized in that, Two brake arms (504) are symmetrically arranged outside the electromagnetic coil (503). A magnetic block is provided at one end of the brake arm (504) near the electromagnetic coil (503). A shaft (506) is installed inside each brake arm (504). A vertical plate (507) is rotatably connected to each shaft (506). The vertical plate (507) is fixedly connected above the worktable (1). An arc-shaped friction block (505) is installed inside each brake arm (504). The two arc-shaped friction blocks (505) are symmetrically arranged outside the friction wheel (509).

9. A novel reliable hoisting structure for a stage LED screen according to claim 3, characterized in that, The buffer mechanism (6) includes a connecting rod (601), which is installed inside the frame (310). A sleeve plate (602) is rotatably connected to the connecting rod (601). Two coil springs (603) are sleeved on the connecting rod (601). One end of the coil spring (603) is fixedly connected inside the frame (310), and the other end of the coil spring (603) is fixedly connected inside the sleeve plate (602). The buffer mechanism (6) also includes a swing shaft (604), which is installed inside the frame (310) through a bearing. A swing plate (605) is sleeved on the swing shaft (604). A damper (606) is installed below the swing plate (605), and a base plate (607) is sleeved below the damper (606).

10. A novel reliable hoisting structure for a stage LED screen according to claim 1, characterized in that, A top column (8) is installed above the workbench (1), and a load-bearing plate (7) is attached to one side of the top column (8). The load-bearing plate (7) is installed on one side of the frame (310).

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