Aerial work self-locking anti-falling hook device
By designing a self-locking anti-detachment hook device, which utilizes gear meshing and a spring structure to achieve automatic locking, the problem of insufficient convenience and safety of existing hooks is solved. This achieves the self-locking anti-detachment function of the hook, improving the safety and stability of high-altitude operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOXING SHANGYU DISTRICT TRANSPORTATION IND DEV CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-07
AI Technical Summary
Existing hooks require manual tightening of the bolted sleeve to lock the mating end when used in high-altitude operations, which is inconvenient to use and lacks self-locking function, resulting in insufficient safety.
A self-locking anti-detachment hook device was designed, which achieves automatic locking through gear meshing and spring structure to ensure the stability and safety of the hook. It includes a hook body and a limiting rod connected by gear meshing, and uses spring and self-locking pin to achieve the self-locking function.
The hook features a self-locking anti-detachment function, improving ease of use and safety, ensuring the hook connection is firm and stable, and meeting the safety requirements for high-altitude operations.
Smart Images
Figure CN224462153U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hook technology, specifically a self-locking anti-detachment hook device for high-altitude operations. Background Technology
[0002] High-altitude work generally refers to work performed at a height relative to a certain position. Before engaging in high-altitude work, safety ropes must be pre-attached. Safety ropes are usually secured using hooks, which are fixed to the high point of the building, and then the safety rope is tied to the hook. Therefore, the use of hooks is particularly necessary. Existing hooks use a screw-fitted locking end to prevent the limit bar on the hook from opening automatically, thus improving the stability of the hook. However, the screw-fitted locking end needs to be manually tightened during use, which is not very convenient. In addition, it does not have a self-locking function, which lacks safety. Therefore, improvements are needed to address the above problems. Utility Model Content
[0003] To achieve the above objectives, this utility model provides the following technical solution: a self-locking anti-detachment hook device for high-altitude operations, comprising a hook connecting part, a hook body, a limiting rod, and a rope loop. A connecting groove is provided in the middle of the top of the hook connecting part. Two connecting shafts are symmetrically rotatably connected inside the connecting groove. The lower parts of the hook body and the limiting rod are respectively fixedly connected to the two connecting shafts, and gears are fixedly installed on the surfaces of both connecting shafts. The two gears mesh with each other. A horizontal sliding groove communicating with the connecting groove is provided in the middle of the hook connecting part. A horizontal sliding block is slidably installed inside the horizontal sliding groove. A toothed block extending into the connecting groove is fixedly installed on the top of the horizontal sliding block. The toothed block meshes with one of the gears, and a pressing block is fixedly installed at one end of the horizontal sliding block. A vertical sliding groove communicating with the horizontal sliding groove is provided in the middle of the hook connecting part. A limiting abutment block that contacts the pressing block is slidably installed inside the vertical sliding groove. An adjusting groove communicating with the vertical sliding groove is provided on one side of the hook connecting part. A self-locking pin connected to the limiting abutment block is installed between the adjusting groove and the vertical sliding groove.
[0004] Preferably, an adjusting pressure pin is fixedly installed at the other end of the horizontal slider. One end of the adjusting pressure pin extends movably through to the other side of the hook connection. A tension spring is sleeved on the surface of the adjusting pressure pin inside the horizontal slide groove. The two ends of the tension spring are fixedly connected to one end of the horizontal slider and one end of the horizontal slide groove, respectively.
[0005] Preferably, a compression spring is fixedly connected between the bottom of the vertical sliding groove and the bottom of the limiting contact block. A self-locking slot is provided in the middle of one side of the limiting contact block. One end of the self-locking pin is movably inserted into the inside of the self-locking slot. The pressing block has a right-angled triangular structure. The top of the limiting contact block has an inclined structure that connects with the inclined surface of the pressing block.
[0006] Preferably, a rotating shaft is rotatably mounted inside the adjusting groove, a toggle plate is fixedly connected to the surface of the rotating shaft, torsion springs are sleeved on both sides of the rotating shaft, and the two ends of the torsion springs are fixedly connected to the toggle plate and the adjusting groove, respectively. A U-shaped fixing block is fixedly installed at the end of the self-locking pin located inside the adjusting groove, and an inverted n-shaped toggle member is fixedly installed on the upper part of one side of the toggle plate, with the middle part of the inverted n-shaped toggle member located inside the U-shaped fixing block.
[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-altitude operation self-locking anti-detachment hook device can effectively ensure the firmness and stability of the hook connection. Its self-locking anti-detachment hook structure is simple in design, convenient to use and operate. After the hook is manually loosened, it can effectively lock and limit the position, thereby effectively ensuring the safety of the hook connection and use, and effectively improving the performance of the hook, so that the hook can meet the needs of high-altitude operation.
[0008] By pressing and adjusting the squeezing pin, it is inserted into the horizontal slide groove. Adjusting the movement of the squeezing pin will stretch the tension spring and push the horizontal slider, toothed block, and squeezing block to move horizontally. The horizontal movement of the toothed block will drive one of the gears to rotate. At the same time, the two gears are meshed and connected, so the two gears rotate in opposite directions. The two opposing rotating gears will drive the hook body and the limiting rod to rotate and unfold through the two connecting shafts, thereby facilitating the hooking operation of the hook body. Attached Figure Description
[0009] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0010] In the attached diagram:
[0011] Figure 1 This is a front section diagram of the self-locking anti-detachment hook device for high-altitude operations according to this utility model;
[0012] Figure 2 This is a schematic diagram of the structure of the self-locking anti-detachment hook device for high-altitude operations of this utility model;
[0013] Figure 3 This utility model Figure 1 A schematic diagram of a partial structure;
[0014] In the diagram: 1. Hook connection part; 2. Hook body; 3. Limiting rod; 4. Rope loop; 5. Connecting groove; 6. Connecting shaft; 7. Gear; 8. Horizontal slide groove; 9. Horizontal slider; 10. Tooth block; 11. Pressing block; 12. Vertical slide groove; 13. Limiting contact block; 14. Adjusting groove; 15. Self-locking pin; 16. Adjusting pressing pin; 17. Tension spring; 18. Compression spring; 19. Self-locking slot; 20. Rotating shaft; 21. Actuating plate; 22. Torsion spring; 23. U-shaped fixing block; 24. Inverted n-shaped actuating element. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0016] Depend on Figures 1 to 3 The present invention includes a hook connecting part 1, a hook body 2, a limiting rod 3, and a rope loop 4. A connecting groove 5 is formed in the middle of the top of the hook connecting part 1. Two connecting shafts 6 are symmetrically rotatably connected inside the connecting groove 5. The lower parts of the hook body 2 and the limiting rod 3 are respectively fixedly connected to the two connecting shafts 6. The hook body 2 and the limiting rod 3 are assembled to form a closed hook-and-loop structure. The mating ends of the hook body 2 and the limiting rod 3 are matched with beveled surfaces. Gears 7 are fixedly installed on the surfaces of both connecting shafts 6, and the two gears 7 mesh together. A connecting groove 5 is formed in the middle of the hook connecting part 1. A horizontal sliding groove 8 is provided, and a horizontal sliding block 9 is slidably installed inside the horizontal sliding groove 8. A toothed block 10 extending into the connecting groove 5 is fixedly installed on the top of the horizontal sliding block 9. The toothed block 10 meshes with one of the gears 7. A pressing block 11 is fixedly installed at one end of the horizontal sliding block 9. A vertical sliding groove 12 communicating with the horizontal sliding groove 8 is provided in the middle of the hook connecting part 1. A limiting abutment block 13 that contacts the pressing block 11 is slidably installed inside the vertical sliding groove 12. An adjusting groove 14 communicating with the vertical sliding groove 12 is provided on one side of the hook connecting part 1. A self-locking pin 15 connected to the limiting abutment block 13 is installed between the adjusting groove 14 and the vertical sliding groove 12.
[0017] An adjusting pressure pin 16 is fixedly installed at the other end of the horizontal slider 9. One end of the adjusting pressure pin 16 extends through to the other side of the hook connection part 1. A tension spring 17 is sleeved on the surface of the adjusting pressure pin 16 inside the horizontal slide groove 8. The two ends of the tension spring 17 are fixedly connected to one end of the horizontal slider 9 and the horizontal slide groove 8, respectively, so as to effectively adjust the hook body 2 and the limiting rod 3.
[0018] Specifically, by pressing and adjusting the squeezing pin 16 to insert it into the horizontal slide groove 8, adjusting the movement of the squeezing pin 16 will stretch the tension spring 17 and push the horizontal slider 9, the toothed block 10 and the squeezing block 11 to move horizontally. The horizontal movement of the toothed block 10 will drive one of the gears 7 to rotate. At the same time, the two gears 7 are connected by mutual meshing, so the two gears 7 rotate in opposite directions. The two opposing rotating gears 7 will drive the hook body 2 and the limiting rod 3 to rotate and unfold through the two connecting shafts 6, thereby facilitating the hooking operation of the hook body 2.
[0019] A compression spring 18 is fixedly connected between the bottom of the vertical slide groove 12 and the bottom of the limiting contact block 13. A self-locking slot 19 is provided in the middle of one side of the limiting contact block 13. One end of the self-locking pin 15 is movably inserted into the self-locking slot 19. The pressing block 11 has a right-angled triangular structure. The top of the limiting contact block 13 has a slope structure that connects with the slope of the pressing block 11, so that the pressing adjustment can be effectively performed.
[0020] Specifically, when the pressing block 11 moves horizontally, it presses the top of the limiting contact block 13, causing the limiting contact block 13 to move downward and compress the compression spring 18. The downward movement of the limiting contact block 13 enables the horizontal slider 9, the toothed block 10 and the pressing block 11 to move horizontally in a stable and effective manner.
[0021] A rotating shaft 20 is rotatably mounted inside the adjusting groove 14. A toggle plate 21 is fixedly connected to the surface of the rotating shaft 20. Torsion springs 22 are sleeved on both sides of the rotating shaft 20. The two ends of the toggle springs 22 are fixedly connected to the toggle plate 21 and the adjusting groove 14, respectively. A U-shaped fixing block 23 is fixedly installed at the end of the self-locking pin 15 located inside the adjusting groove 14. An inverted n-shaped toggle member 24 is fixedly installed on the upper part of one side of the toggle plate 21. The middle part of the inverted n-shaped toggle member 24 is located inside the U-shaped fixing block 23, thereby effectively enabling self-locking and effective adjustment.
[0022] Specifically, when the self-locking pin 15 is inserted into the self-locking slot 19 and the limiting contact block 13 cannot be moved or adjusted, the upper part of the limiting contact block 13 will abut against the squeezing block 11 to limit it, so that the tooth block 10 can effectively maintain stability and the hook body 2 and the limiting rod 3 can be spliced into a closed stable hook ring structure, so that the hook body 2 and the limiting rod 3 have a self-locking anti-detachment function.
[0023] Before disassembly, first hold the hook connection part 1 with one hand, then press the lower part of the actuating plate 21 with the ring finger to rotate the actuating plate 21 and tighten the torsion spring 22. The rotation of the actuating plate 21 will move the U-shaped fixing block 23 through the inverted n-shaped actuating member 24, thereby moving the self-locking pin 15 and removing the self-locking pin 15 from the inside of the self-locking slot 19. After that, the limiting contact block 13 will move down when it is squeezed.
[0024] This high-altitude operation self-locking anti-detachment hook device can effectively ensure the firmness and stability of the hook connection. Its self-locking anti-detachment hook structure is simple in design, convenient to use and operate. After the hook is manually loosened, it can effectively lock and limit the position, thereby effectively ensuring the safety of the hook connection and improving the performance of the hook, so that the hook can meet the needs of high-altitude operations.
Claims
1. A self-locking anti-detachment hook device for high-altitude operations, comprising a hook connection part (1), a hook body (2), a limiting rod (3), and a rope loop (4), characterized in that: A connecting groove (5) is provided in the middle of the top of the hook connecting part (1). Two connecting shafts (6) are symmetrically rotatably connected inside the connecting groove (5). The lower parts of the hook body (2) and the limiting rod (3) are respectively fixedly connected to the two connecting shafts (6). Gears (7) are fixedly installed on the surface of the two connecting shafts (6). The two gears (7) are meshed. A transverse sliding groove (8) communicating with the connecting groove (5) is provided in the middle of the hook connecting part (1). A transverse sliding block (9) is slidably installed inside the transverse sliding groove (8). An extension extending to the connecting groove (5) is fixedly installed on the top of the transverse sliding block (9). The toothed block (10) inside the horizontal slider (9) is meshed with one of the gears (7), and a pressing block (11) is fixedly installed at one end of the horizontal slider (9). A vertical sliding groove (12) communicating with the horizontal sliding groove (8) is opened in the middle of the hook connection part (1). A limiting contact block (13) that contacts the pressing block (11) is slidably installed inside the vertical sliding groove (12). An adjusting groove (14) communicating with the vertical sliding groove (12) is opened on one side of the hook connection part (1). A self-locking pin (15) connected with the limiting contact block (13) is installed between the adjusting groove (14) and the vertical sliding groove (12).
2. The high-altitude operation self-locking anti-detachment hook device according to claim 1, characterized in that: An adjusting pressure pin (16) is fixedly installed at the other end of the horizontal slider (9). One end of the adjusting pressure pin (16) extends through to the other side of the hook connection (1). A tension spring (17) is sleeved on the surface of the adjusting pressure pin (16) inside the horizontal slide groove (8). The two ends of the tension spring (17) are fixedly connected to one end of the horizontal slider (9) and the horizontal slide groove (8), respectively.
3. The high-altitude operation self-locking anti-detachment hook device according to claim 1, characterized in that: A compression spring (18) is fixedly connected between the bottom of the vertical slide groove (12) and the bottom of the limiting contact block (13). A self-locking slot (19) is provided in the middle of one side of the limiting contact block (13). One end of the self-locking pin (15) is movably inserted into the inside of the self-locking slot (19). The pressing block (11) has a right-angled triangular structure. The top of the limiting contact block (13) has an inclined structure that connects with the inclined surface of the pressing block (11).
4. A high-altitude operation self-locking anti-detachment hook device according to claim 1, characterized in that: A rotating shaft (20) is rotatably installed inside the adjusting groove (14). A toggle plate (21) is fixedly connected to the surface of the rotating shaft (20). Torsion springs (22) are sleeved on both sides of the rotating shaft (20). The two ends of the toggle springs (22) are fixedly connected to the toggle plate (21) and the adjusting groove (14) respectively. A U-shaped fixing block (23) is fixedly installed at the end of the self-locking pin (15) located inside the adjusting groove (14). An inverted n-shaped toggle piece (24) is fixedly installed on the upper part of one side of the toggle plate (21). The middle part of the inverted n-shaped toggle piece (24) is located inside the U-shaped fixing block (23).