Anti-falling device of tower crane

Abstract

The utility model discloses a tower crane anti-falling device which comprises a bottom plate, a motor is fixedly connected to the rear end of the bottom plate, a lead screw is fixedly connected to the output end of the motor, and the side, away from the motor, of the lead screw penetrates into an inner cavity of the bottom plate. A long lifted object is placed above the bottom plate, the motor is started, the motor drives the lead screw to rotate, the lead screw drives the threaded sleeve to move, the threaded sleeve drives the limiting plate to move, the limiting plate drives the connecting block to move, the connecting block drives the connecting plate to move, and the connecting plate drives the protection plate to move. A lifted object is clamped and positioned through the protection plate and the baffle, the stability of the lifted object is guaranteed, then the purpose of preventing falling in the lifting process can be guaranteed, and the problems that in the using process of a traditional falling prevention device, the function of limiting a long lifted object is not achieved, the using functionality of the falling prevention device is poor, and the use cost is high can be effectively solved. And the use requirements cannot be met.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-falling devices, in particular to an anti-falling device for a tower crane. Background Technique

[0002] Tower cranes are one of the most common and indispensable lifting equipment on construction sites, also known as "tower cranes", which are mostly used for hoisting construction raw materials such as steel bars, wooden beams, concrete, steel pipes, etc. Although existing tower cranes can basically meet the use requirements in actual construction, tower cranes use the lever principle to hoist construction raw materials. To ensure that their hoisting weight and hoisting range meet the use requirements, the balance arm length of the tower crane must be relatively long, resulting in difficulty in setting up perfect protective settings around the hoisting operation site. There are potential safety hazards that the hoisted construction raw materials may fall and injure construction workers and construction structures during the hoisting operation.

[0003] For example, the Chinese utility model provides an anti-falling device for a tower crane for small hoisted objects, with the publication number: CN213679448U, which includes a top cover, a square frame located below the top cover, a vertical rod group for connecting and fixing the square frame and the top cover, and a protective mechanism for anti-falling. The top cover has an opening facing downwards and is hung and fixed on the hook, and a fixed hook is connected and fixed to its inner top; on the upper sides of a set of opposite sides of the square frame, two vertical rod groups are symmetrically arranged respectively, and on the upper sides of the other set of opposite sides, two protective mechanisms are symmetrically arranged respectively. The utility model is provided with vertical rod groups on the front and rear sides of the hoisted object of the tower crane to prevent the hoisted object from shaking violently and falling over from the front and rear sides, and on the left and right sides, there are protective plates that can rotate and are supported and fixed on the left and right sides and the bottom of the hoisted object by supporting rotating rods to prevent the hoisted object from falling over or directly falling from the left and right sides, eliminating the safety hazards of the hoisted object falling at the construction site; when loading and unloading the hoisted object of the utility model, the protective plate and the supporting rotating rod can rotate and fold outside the protective plate, without affecting the normal progress of the hoisting work.

[0004] In the process of implementing the present utility model, the inventor found that there are at least the following problems in this technology. The anti-falling device in the above patent does not have the function of limiting longer hoisted objects during use, resulting in poor functionality of the anti-falling device and inability to meet the use requirements. For this reason, we propose an anti-falling device for a tower crane. Content of the Utility Model

[0005] The purpose of the present utility model is to provide an anti-falling device for a tower crane, which has the advantage of improving the limiting effect, and solves the problem that the anti-falling device does not have the function of limiting longer hoisted objects during use, resulting in poor functionality of the anti-falling device and inability to meet the use requirements.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A tower crane anti-falling device, including a bottom plate, the rear end of the bottom plate is fixedly connected with a motor, the output end of the motor is fixedly connected with a lead screw, the side of the lead screw away from the motor penetrates into the inner cavity of the bottom plate, one side of the lead screw is movably connected with the inner wall of the bottom plate through a bearing, the surface of the lead screw is threadedly connected with a threaded sleeve, the surface of the threaded sleeve is fixedly connected with a limiting plate, the top of the limiting plate is fixedly connected with a connecting block, the top of the connecting block penetrates into the inner cavity of the bottom plate and extends above the bottom plate, the top of the connecting block is fixedly connected with a connecting plate, the top of the surface of the connecting plate is fixedly connected with a protective plate, the front end of the top of the bottom plate is fixedly connected with a baffle plate, the four corners of the top of the bottom plate are fixedly connected with columns, the top of the opposite sides of the two columns is fixedly connected with a connecting rod, the top of the connecting rod is fixedly connected with a connecting seat, and a lifting hole is opened on the surface of the connecting seat.

[0007] Preferably, both sides of the inner cavity of the bottom plate are fixedly connected with sliding rods, and the surface of the sliding rods is slidably connected with the limiting plate.

[0008] Preferably, both sides of the top of the bottom plate are provided with chutes, and both sides of the bottom of the connecting plate are fixedly connected with sliders, and the bottom of the sliders extends into the inner cavity of the chutes.

[0009] Preferably, the bottom of the surface of the connecting plate is fixedly connected with an inclined plate, and the bottom of the opposite sides of the columns is fixedly connected with limiting blocks.

[0010] Preferably, the surface of the baffle plate is provided with long grooves, and the long grooves are equidistantly arranged.

[0011] Preferably, both sides of the motor are fixedly connected with reinforcing blocks, and the bottom of the reinforcing blocks is fixedly connected with the bottom plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, by placing a relatively long lifting object above the bottom plate, starting the motor, the motor drives the lead screw to rotate, the lead screw drives the threaded sleeve to move, the threaded sleeve drives the limiting plate to move, the limiting plate drives the connecting block to move, the connecting block drives the connecting plate to move, and the connecting plate drives the protective plate to move. The lifting object is clamped and positioned by the protective plate and the baffle plate to ensure the stability of the lifting object, and thus the purpose of preventing falling during the lifting process can be achieved. It can effectively solve the problem that the traditional anti-falling device does not have the function of limiting a relatively long lifting object during use, resulting in poor functionality of the anti-falling device and being unable to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the present utility model;

[0015] Figure 2 It is a cross-sectional schematic view of the internal structure of the bottom plate of the present utility model;

[0016] Figure 3 It is a top view schematic diagram of the structure of the present utility model.

[0017] In the figure: 1. Bottom plate; 2. Motor; 3. Lead screw; 4. Threaded sleeve; 5. Limiting plate; 6. Connecting block; 7. Connecting plate; 8. Protective plate; 9. Baffle; 10. Column; 11. Connecting rod; 12. Connecting seat; 13. Hanging hole; 14. Slide bar; 15. Slide groove; 16. Inclined plate; 17. Limiting block; 18. Long groove; 19. Reinforcing block. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-3, A tower crane anti-falling device, including a bottom plate 1. The rear end of the bottom plate 1 is fixedly connected with a motor 2. The output end of the motor 2 is fixedly connected with a lead screw 3. One side of the lead screw 3 away from the motor 2 penetrates into the inner cavity of the bottom plate 1. One side of the lead screw 3 is movably connected with the inner wall of the bottom plate 1 through a bearing. A threaded sleeve 4 is threadedly connected to the surface of the lead screw 3. A limiting plate 5 is fixedly connected to the surface of the threaded sleeve 4. A connecting block 6 is fixedly connected to the top of the limiting plate 5. The top of the connecting block 6 penetrates into the inner cavity of the bottom plate 1 and extends above the bottom plate 1. A connecting plate 7 is fixedly connected to the top of the connecting block 6. A protective plate 8 is fixedly connected to the top of the surface of the connecting plate 7. The front end of the top of the bottom plate 1 is fixedly connected with a baffle 9. Columns 10 are fixedly connected to the four corners of the top of the bottom plate 1. A connecting rod 11 is fixedly connected to the top of the opposite sides of the two columns 10. A connecting seat 12 is fixedly connected to the top of the connecting rod 11. A hanging hole 13 is provided on the surface of the connecting seat 12. By placing a relatively long hoisting object above the bottom plate 1, starting the motor 2, the motor 2 drives the lead screw 3 to rotate, the lead screw 3 drives the threaded sleeve 4 to move, the threaded sleeve 4 drives the limiting plate 5 to move, the limiting plate 5 drives the connecting block 6 to move, the connecting block 6 drives the connecting plate 7 to move, and the connecting plate 7 drives the protective plate 8 to move. The hoisting object is clamped and positioned by the protective plate 8 and the baffle 9, ensuring the stability of the hoisting object, and thus being able to achieve the purpose of anti-falling during the hoisting process. It can effectively solve the problem that the traditional anti-falling device does not have the function of limiting relatively long hoisting objects during use, resulting in poor functionality of the anti-falling device and being unable to meet the use requirements.

[0020] Both sides of the inner cavity of the bottom plate 1 are fixedly connected with slide bars 14. The surface of the slide bars 14 is slidably connected with the limiting plate 5.

[0021] Through the above technical solution, by setting the slide bars 14, the limiting plate 5 can be limited, ensuring the stability of the limiting plate 5 during movement.

[0022] Chutes 15 are provided on both sides of the top of the bottom plate 1. Sliders are fixedly connected to both sides of the bottom of the connecting plate 7. The bottom of the sliders extends into the inner cavity of the chutes 15.

[0023] Through the above technical solution, by setting the chutes 15 and the sliders, the connecting plate 7 can be limited, improving the stability of the connecting plate 7.

[0024] An inclined plate 16 is fixedly connected to the bottom of the surface of the connecting plate 7. A limiting block 17 is fixedly connected to the bottom of the opposite sides of the columns 10.

[0025] Through the above technical solution, by setting the inclined plate 16 and the limiting block 17, the purpose of efficiently limiting the hoisting object can be achieved, improving the stability of the hoisting object.

[0026] Long grooves 18 are provided on the surface of the baffle 9, and the long grooves 18 are equidistantly arranged.

[0027] Through the above technical solution, by providing the long groove 18, it is convenient for the staff to observe the limit state of the lifted object, improving safety.

[0028] Reinforcing blocks 19 are fixedly connected to both sides of the motor 2, and the bottom of the reinforcing blocks 19 is fixedly connected to the bottom plate 1.

[0029] Through the above technical solution, by providing the reinforcing blocks 19, the motor 2 can be installed, ensuring the stability of the motor 2.

[0030] During use, the staff place a relatively long lifted object above the bottom plate 1. By starting the motor 2, the motor 2 drives the lead screw 3 to rotate. The lead screw 3 drives the threaded sleeve 4 to move. The threaded sleeve 4 drives the limit plate 5 to move. The limit plate 5 drives the connecting block 6 to move. The connecting block 6 drives the connecting plate 7 to move. The connecting plate 7 drives the protection plate 8 to move. The protection plate 8 and the baffle 9 clamp and position the lifted object, ensuring the stability of the lifted object, and thus being able to achieve the purpose of preventing falling during the lifting process.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tower crane anti-fall device, comprising a bottom plate (1), characterized in that: The rear end of the base plate (1) is fixedly connected to a motor (2), the output end of the motor (2) is fixedly connected to a screw rod (3), the side of the screw rod (3) away from the motor (2) penetrates into the inner cavity of the base plate (1), one side of the screw rod (3) is movably connected to the inner wall of the base plate (1) via a bearing, the surface of the screw rod (3) is threadedly connected to a threaded sleeve (4), the surface of the threaded sleeve (4) is fixedly connected to a limit plate (5), the top of the limit plate (5) is fixedly connected to a connection block (6), and the top of the connection block (6) penetrates through the base plate (1). The inner cavity of the bottom plate (1) extends to the top of the bottom plate (1), the top of the connecting block (6) is fixedly connected to a connecting plate (7), the top of the surface of the connecting plate (7) is fixedly connected to a protective plate (8), the front end of the top of the bottom plate (1) is fixedly connected to a baffle (9), the four corners of the top of the bottom plate (1) are fixedly connected to columns (10), the tops of the two columns (10) on the opposite sides are fixedly connected to connecting rods (11), the top of the connecting rods (11) is fixedly connected to a connecting seat (12), and the surface of the connecting seat (12) is provided with a hanging hole (13).

2. A tower crane anti-fall device according to claim 1, characterized in that: Sliding rods (14) are fixedly connected to both sides of the inner cavity of the bottom plate (1), and the surface of the sliding rods (14) is slidably connected to the limiting plate (5).

3. The tower crane anti-fall device according to claim 1, characterized in that: Slide grooves (15) are provided on both sides of the top of the bottom plate (1), and sliding blocks are fixedly connected to both sides of the bottom of the connecting plate (7), with the bottom of the sliding block extending to the inner cavity of the slide groove (15).

4. The tower crane anti-fall device according to claim 1, characterized in that: The bottom of the surface of the connection plate (7) is fixedly connected to an inclined plate (16), and the bottom of the opposite side of the upright column (10) is fixedly connected to a limiting block (17).

5. The tower crane anti-fall device according to claim 1, characterized in that: The surface of the baffle (9) is provided with long grooves (18), and the long grooves (18) are arranged at equal distances.

6. The tower crane anti-fall device according to claim 1, characterized in that: Reinforcement blocks (19) are fixedly connected to both sides of the motor (2), and the bottom of the reinforcement block (19) is fixedly connected to the bottom plate (1).

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