Anti-falling tower crane hook structure

Abstract

The utility model discloses an anti-falling tower crane hook structure which comprises a hook mounting seat, the top of the hook mounting seat is fixedly connected with a pulley outer cover, a connecting pulley is rotatably connected between the inner walls of the two sides of the pulley outer cover, and a hook shaft is rotatably inserted into the bottom of the hook mounting seat. The top end of the lifting hook shaft is fixedly connected with a rotating disc, the bottom end of the lifting hook shaft is fixedly connected with a lifting hook body, one end of the lifting hook body is fixedly connected with a clamping block, and one side of the lifting hook mounting seat is provided with a through hole. The lifting hook shaft is driven by forward rotation of the motor to rotate, so that the lifting hook body is driven to rotate, the clamping block is clamped with the clamping groove, a rope is prevented from falling off from the lifting hook body, the internal space of the hook body is not occupied, the lifting hook shaft is driven by reverse rotation of the motor to rotate, and the lifting hook body is driven to rotate. Therefore, manual operation is not needed, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a falling-proof tower crane hook structure. Background Art

[0002] Crane hook is a common lifting device in lifting machinery, and most of the hooks are open structures.

[0003] However, in order to prevent the lifting rope from falling off the hook, the existing crane hook structure now mostly adopts an elastic clip provided on the hook body of the hook to prevent the suspended rope from falling off the hook. However, this elastic clip not only requires a large elastic force to prevent falling off, but also causes the internal space of the hook body to be reduced. When taking out heavy objects, it is necessary to manually press the elastic clip to remove the rope. Not only is the operation very inconvenient, but it is also dangerous, thereby affecting the practicality of the crane hook. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the elastic hook not only requires a large elastic force to prevent falling off, but also such structure causes the internal space of the hook body to be reduced. When taking out heavy objects, it is necessary to manually press the elastic buckle before removing the rope, which is not only very inconvenient to operate but also has certain dangers, thereby affecting the practicality of the crane hook. A fall-proof tower crane hook structure is proposed to solve the problem that the elastic hook not only requires a large elastic force to prevent falling off, but also such structure causes the internal space of the hook body to be reduced. When taking out heavy objects, it is necessary to manually press the elastic buckle before removing the rope.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fall-proof tower crane hook structure comprises a hook mounting seat, the top of the hook mounting seat is fixedly connected to a pulley cover, a connecting pulley is rotatably connected between the inner walls of the pulley cover, a hook shaft is rotatably inserted into the bottom of the hook mounting seat, the top of the hook shaft is fixedly connected to a rotating disk, the bottom end of the hook shaft is fixedly connected to a hook body, one end of the hook body is fixedly connected to a clamping block, one side of the hook mounting seat is provided with a through hole, a motor is fixedly connected in the through hole, the output end of the motor is fixedly connected to the rotating disk, the bottom of the hook mounting seat is fixedly connected to a fixing seat, one side of the fixing seat is provided with a clamping groove, and the clamping block is clamped with the clamping groove.

[0007] Furthermore, two auxiliary pulleys are rotatably connected between the inner walls on both sides of the hook mounting seat.

[0008] Furthermore, a plurality of limiting protrusions are integrally formed on the inner wall of the hook body.

[0009] Furthermore, the cross section of the block is a T-shaped structure, and arc structures are provided at both ends of the block.

[0010] Furthermore, a plurality of reinforcing rib plates are fixedly connected between the hook mounting seat and the fixing seat.

[0011] Furthermore, a suspension shaft is fixedly connected to one side of the hook mounting seat.

[0012] The beneficial effects of the utility model are:

[0013] 1. The hook shaft rotates under the drive of the forward rotation of the motor, thereby driving the hook body to rotate, and then the card block is engaged with the card slot, thereby preventing the rope from falling off the hook body and not occupying the internal space of the hook body. Then, the hook shaft rotates under the drive of the reverse rotation of the motor, thereby driving the hook body to rotate, and then the card block is disengaged from the card slot, so that manual operation is not required, which is convenient and quick.

[0014] 2. The setting of the limiting protrusion can increase the friction between the rope and the hook body, thereby preventing the rope from slipping and further preventing the product from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural schematic diagram of a tower crane hook structure for preventing a fall proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of a top view of a tower crane hook structure for preventing a fall proposed by the utility model;

[0017] Figure 3 The utility model is a partial cross-sectional structural schematic diagram of a tower crane hook structure for preventing falling.

[0018] In the figure: 1. hook mounting seat; 2. pulley cover; 3. connecting pulley; 4. auxiliary pulley; 5. hook shaft; 6. rotating disk; 7. hook body; 8. limiting protrusion; 9. clamping block; 10. fixing seat; 11. clamping groove; 12. reinforcing rib plate; 13. perforation; 14. motor; 15. suspension shaft. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 3A fall-proof tower crane hook structure comprises a hook mounting seat 1, a pulley cover 2 is welded on the top of the hook mounting seat 1, a connecting pulley 3 is rotatably connected between the inner walls of the pulley cover 2 on both sides, a hook shaft 5 is rotatably inserted at the bottom of the hook mounting seat 1, a rotating disk 6 is welded on the top of the hook shaft 5, a hook body 7 is welded on the bottom of the hook shaft 5, a clamping block 9 is welded on one end of the hook body 7, a through hole 13 is provided on one side of the hook mounting seat 1, a motor 14 is fixed in the through hole 13 by bolts, and the output end of the motor 14 is fixedly connected to the rotating disk 6, a fixing seat 10 is welded on the bottom of the hook mounting seat 1, a clamping groove 11 is provided on one side of the fixing seat 10, and the clamping block 9 is clamped with the clamping groove 11, and the rotation of the rotating disk 6 drives the hook shaft 5 to rotate, thereby driving the hook body 7 to rotate, and then making the clamping block 9 clamped with the clamping groove 11, thereby preventing the rope from falling off the hook body 7.

[0021] Two auxiliary pulleys 4 are rotatably connected between the inner walls on both sides of the hook mounting seat 1. The auxiliary pulleys 4 play an auxiliary lifting role, thereby improving the stability of lifting. The inner wall of the hook body 7 is integrally formed with a plurality of limiting protrusions 8. The limiting protrusions 8 increase the friction between the rope and the hook body 7, thereby preventing the rope from slipping. The cross-section of the clamping block 9 is a T-shaped structure, and both ends of the clamping block 9 are provided with an arc structure. A plurality of reinforcing rib plates 12 are welded between the hook mounting seat 1 and the fixed seat 10, thereby improving the firmness of the connection between the hook mounting seat 1 and the fixed seat 10. A suspension shaft 15 is welded on one side of the hook mounting seat 1, thereby facilitating the hanging of a safety rope.

[0022] The working principle of this embodiment is as follows: when in use, first, the tower crane is connected to the connecting pulley 3 and the auxiliary pulley 4 through the lifting rope, and then the rope is hung on the hook body 7. Next, the rotating disk 6 is rotated under the drive of the forward rotation of the motor 14, thereby driving the hook shaft 5 to rotate, and then driving the hook body 7 to rotate, so that the clamping block 9 is engaged with the clamping slot 11, thereby preventing the rope from falling off the hook body 7. After that, the lifting can be carried out. After the lifting is completed, the hook shaft 5 is rotated under the drive of the reverse rotation of the motor 14, thereby driving the hook body 7 to rotate, and then the clamping block 9 is disengaged from the clamping slot 11, and then the rope can be removed.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tower crane hook structure for preventing falling, comprising a hook mounting seat (1), characterized in that: The top of the hook mounting seat (1) is fixedly connected to a pulley cover (2), and a connecting pulley (3) is rotatably connected between the inner walls on both sides of the pulley cover (2). The bottom of the hook mounting seat (1) is rotatably plugged with a hook shaft (5), the top of the hook shaft (5) is fixedly connected to a rotating disk (6), the bottom of the hook shaft (5) is fixedly connected to a hook body (7), and one end of the hook body (7) is fixedly connected to a clamping block (9). A through hole (13) is provided on one side of the hook mounting seat (1), and a motor (14) is fixedly connected in the through hole (13), and the output end of the motor (14) is fixedly connected to the rotating disk (6). The bottom of the hook mounting seat (1) is fixedly connected to a fixing seat (10), and a clamping groove (11) is provided on one side of the fixing seat (10), and the clamping block (9) is clamped with the clamping groove (11).

2. The anti-fall tower crane hook structure according to claim 1, characterized in that: Two auxiliary pulleys (4) are rotatably connected between the inner walls on both sides of the hook mounting seat (1).

3. The anti-fall tower crane hook structure according to claim 1, characterized in that: The inner wall of the hook body (7) is integrally formed with a plurality of limiting protrusions (8).

4. The anti-fall tower crane hook structure according to claim 1, characterized in that: The cross section of the clamping block (9) is a T-shaped structure, and arc structures are provided at both ends of the clamping block (9).

5. The anti-fall tower crane hook structure according to claim 1, characterized in that: A plurality of reinforcing rib plates (12) are fixedly connected between the hook mounting seat (1) and the fixing seat (10).

6. The anti-fall tower crane hook structure according to claim 1, characterized in that: A suspension shaft (15) is fixedly connected to one side of the hook mounting seat (1).

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