An open lifting hook
By improving the hook structure, adopting springs and limiting structures to enhance anti-fall-off performance, and using detachable connectors to achieve angle adjustment, the problems of existing hooks being difficult to fall off and disassemble have been solved, thus improving the safety and ease of use of the hook.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN TUOKE HOISTING MASCH CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-05-29
AI Technical Summary
Existing open-type lifting hooks have insufficient anti-disengagement reinforcement during use, and may not close tightly due to collision or corrosion, posing a risk of the lifted load falling off. Furthermore, disassembly and replacement are inconvenient, and it is difficult to adjust the hook angle as needed.
An open-type lifting hook was designed, comprising components such as a crossbeam plate, pulley, connecting cylinder, hook, spring, limit seat, and hook. The spring and limit structure improve the anti-fall-off performance, and the detachable connector allows for convenient angle adjustment.
It achieves the effect of preventing the hook from falling off, simplifies the component replacement process, facilitates the adjustment of the hook angle, and improves the safety and ease of operation.
Smart Images
Figure CN224298711U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting hook technology, specifically an open-type lifting hook. Background Technology
[0002] Open-end lifting hooks, commonly known as C-hooks or lifting hooks with catch plates, are the most classic and common type of hook. This design is one of the oldest and most basic forms of lifting hooks, and its principle can be traced back to manual lifting tools from the early Industrial Revolution or even earlier. It emerged to address a fundamental need: the quick and convenient hooking and releasing of loads.
[0003] An existing type of open-end lifting hook has some drawbacks during use. The anti-disengagement reinforcement of some hooks is simple, and they may not close tightly due to collisions or corrosion, posing a risk of the lifted load falling off. In addition, some hooks are cumbersome to disassemble and replace, and it is not convenient to change the angle of the hook as needed. An open-end lifting hook is provided to solve the above problems. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides an open-type lifting hook, which solves the problems mentioned in the background section.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: an open-type lifting hook includes a crossbeam plate. A pulley is rotatably connected to the upper interior of the crossbeam plate via a pin. A connecting cylinder is rotatably connected to the lower interior of the crossbeam plate via a pin. A hook is inserted into the connecting cylinder. A first spring is sleeved on the outer surface of the hook. A nut and a limiting seat are threadedly connected to the outer surface of the hook near the top. A square groove is formed inside the hook. A connecting seat is rotatably connected to the hook via a pin. A sleeve is threadedly connected to the connecting seat. A second spring and a push rod are arranged inside the sleeve. A first rotating seat is provided on one side of the hook. A hook is rotatably connected to the first rotating seat via a pin. A second rotating seat is provided on the right side of the crossbeam plate. A connecting rod is provided on the second rotating seat. A connecting block is provided on the inner side of the crossbeam plate. A square hole is formed inside the right wall of the connecting block. A pull rod adapted to the through-hole size is arranged in the square hole.
[0008] Optionally, there are two crossbeams, located on both sides of the hook.
[0009] Optionally, protective pads are provided at the top of the connecting cylinder and the bottom of the nut, and the inner diameter of the connecting cylinder is slightly larger than the diameter of the top of the hook.
[0010] Optionally, one end of the second spring abuts against the inner top wall of the connecting seat, and the other end of the second spring abuts against one end of the push rod. The hook has a through hole inside, and the inner diameter of the through hole is slightly larger than the diameter of the push rod.
[0011] Optionally, a baffle is welded to the outer surface of the pull rod, and a third spring is sleeved on the outer surface of the pull rod. One end of the third spring abuts against the baffle, and the other end of the third spring abuts against the right inner wall of the connecting block.
[0012] Optionally, the inner wall of the limiting seat is provided with a number of slots, which are evenly distributed on the inner wall of the limiting seat.
[0013] This utility model provides an open-type lifting hook, which has the following advantages:
[0014] 1. This open-type lifting hook, through the arrangement of connecting cylinder, hook, connecting seat, sleeve, second spring and push rod, has a good anti-fall-off effect and facilitates timely replacement of anti-fall-off structural components.
[0015] 2. This open-type lifting hook, through the arrangement of connecting cylinder, first spring, limit seat, hook, hook, connecting rod, pull rod, baffle and third spring, enables the open-type lifting hook to facilitate disassembly of the hook and adjustment of the hook angle. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;
[0017] Figure 2 This is a structural schematic diagram of the formal cross-section of this utility model;
[0018] Figure 3 This utility model Figure 2 A schematic diagram of the structure of the enlarged view of A in the diagram;
[0019] Figure 4 This utility model Figure 2 A structural schematic diagram of the enlarged view of B in the diagram;
[0020] Figure 5 This is a schematic diagram of the structure of the present invention from the side view:
[0021] Figure 6 This is a structural schematic diagram of the side view of this utility model.
[0022] In the diagram: 1. Crossbeam; 2. Pulley; 3. Connecting cylinder; 4. Hook; 5. First spring; 6. Nut; 7. Limit seat; 8. Connecting seat; 9. Sleeve; 10. Second spring; 11. Push rod; 12. Hook; 13. Connecting rod; 14. Connecting block; 15. Pull rod; 16. Protective pad; 17. Baffle; 18. Third spring. Detailed Implementation
[0023] 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.
[0024] Example
[0025] Please see Figures 1 to 6 This utility model provides a technical solution for an open-type lifting hook, including a crossbeam plate 1. A pulley 2 is rotatably connected to the upper interior of the crossbeam plate 1 via a pin. A connecting cylinder 3 is rotatably connected to the lower interior of the crossbeam plate 1 via a pin. A hook 4 is inserted into the connecting cylinder 3. A first spring 5 is sleeved on the outer surface of the hook 4. A nut 6 and a limiting seat 7 are threadedly connected to the outer surface of the hook 4 near the top. A square groove is formed inside the hook 4. A connecting seat 8 is rotatably connected to the inside of the hook 4 via a pin. A sleeve 9 is threadedly connected to the inside of the connecting seat 8. A second spring 10 and a push rod 11 are arranged inside the sleeve 9. A first rotating seat is provided on one side of the hook 4. A hook 12 is rotatably connected to the inside of the first rotating seat via a pin. A second rotating seat is provided on the right side of the crossbeam plate 1. A connecting rod 13 is provided on the second rotating seat. A connecting block 14 is provided on the inner side of the crossbeam plate 1. A square hole is formed inside the right wall of the connecting block 14. A pull rod 15 adapted to the through hole size is arranged in the square hole.
[0026] Please refer to Figure 1 to Figure 2 There are two crossbeams 1, located on both sides of the hook 4.
[0027] Specifically, the crossbeam plate 1 provides overall support for the hook 4.
[0028] Please refer to Figure 1 to Figure 2 Protective pads 16 are provided at the top of the connecting cylinder 3 and the bottom of the nut 6. The inner diameter of the connecting cylinder 3 is slightly larger than the diameter of the top of the hook 4.
[0029] Specifically, the protective pad 16 provides a certain degree of protection for both the first spring 5 and the nut 6. The inner diameter of the connecting cylinder 3 is slightly larger than the diameter of the top of the hook 4, allowing the hook 4 to rotate inside the connecting cylinder 3.
[0030] Please refer to Figure 2 to Figure 3One end of the second spring 10 abuts against the inner top wall of the connecting seat 8, and the other end of the second spring 10 abuts against one end of the push rod 11. The hook 4 has a through hole inside, and the inner diameter of the through hole is slightly larger than the diameter of the push rod 11.
[0031] Specifically, the through hole inside the hook 4 limits and fixes the push rod 11, and the push rod 11 disengages from the inside of the hook 4, thereby causing the object to fall off the hook 4.
[0032] Please see Figures 2 to 4 A baffle 17 is welded to the outer surface of the pull rod 15, and a third spring 18 is sleeved on the outer surface of the pull rod 15. One end of the third spring 18 abuts against the baffle 17, and the other end of the third spring 18 abuts against the right inner wall of the connecting block 14.
[0033] Specifically, when the lever 15 is pulled, the lever 15 moves the baffle 17 and squeezes the third spring 18. When the lever 15 is released, the third spring 18 releases its elastic force, causing the third spring 18 to push the baffle 17 and the lever 15 back to their original positions.
[0034] Please see Figures 1 to 6 The inner wall of the limiting seat 7 is provided with a number of slots, which are evenly distributed on the inner wall of the limiting seat 7.
[0035] Specifically, one end of the pull rod 15 is engaged in the slot inside the limit seat 7 to limit the limit seat 7 and prevent the hook 4 from rotating and thus changing the angle.
[0036] During use, when using hook 4, the wire rope is looped onto pulley 2. When lifting an item, the operator first pushes push rod 11. Push rod 11 moves inward into sleeve 9 while simultaneously squeezing the second spring 10, causing push rod 11 to disengage from the through hole inside hook 4. Then, the item is hung on hook 4. Push rod 11 is then released, and the second spring 10 releases its elasticity, pushing push rod 11 back into the through hole inside hook 4. This prevents the item from detaching from hook 4 when it is raised. As hook 4 rises, it moves downward a certain distance and squeezes the first spring 5. The first spring 5, under pressure, undergoes elastic deformation, reducing the impact on the crossbeam plate 1 and connecting cylinder 3 when hook 4 rises, thus extending the service life of hook 4. The second spring 10 inside sleeve 9 will inevitably be damaged over time. When replacing the second spring 10, rotate sleeve 9 to... 9. Remove the second spring 10 from the inside of the connecting seat 8. When replacing the hook 4, turn the hook 4 to the left and flip the hook 12 so that the hook 12 is hooked on the connecting rod 13 on one side of the crossbeam plate 1. Then turn the limit seat 7 and nut 6 to remove the hook 4 and replace it with a new hook 4. The hook 4 can be adjusted to a suitable angle according to different lifting requirements. When adjusting the angle of the hook 4, pull the pull rod 15. The pull rod 15 will drive the baffle 17 to move and squeeze the third spring 18, so that the pull rod 15 is disengaged from the slot inside the limit seat 7. Then turn the hook 4 so that the hook 4 drives the nut 6 and the limit seat 7 to rotate. After the hook 4 is adjusted to a suitable angle, release the pull rod 15. The third spring 18 will release its elasticity and push the pull rod 15 so that the pull rod 15 enters the slot inside the limit seat 7 to limit and fix the limit seat 7.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An open-type lifting hook, comprising a crossbeam plate, characterized in that: The upper part of the crossbeam plate is rotatably connected to a pulley via a pin, and the lower part of the crossbeam plate is rotatably connected to a connecting cylinder via a pin. A hook is inserted into the connecting cylinder, and a first spring is sleeved on the outer surface of the hook. A nut and a limit seat are threadedly connected to the outer surface of the hook near the top. A square groove is opened inside the hook, and a connecting seat is rotatably connected inside the hook via a pin. A sleeve is threaded inside the connecting seat, and a second spring and a push rod are installed inside the sleeve. A first rotating seat is provided on one side of the hook, and a hook is rotatably connected inside the first rotating seat via a pin. A second rotating seat is provided on the right side of the crossbeam plate, and a connecting rod is installed on the second rotating seat. A connecting block is provided on the inner side of the crossbeam plate, and a square hole is opened inside the right wall of the connecting block. A pull rod adapted to the size of the through hole is installed in the square hole.
2. The open-type lifting hook according to claim 1, characterized in that: There are two crossbeams, located on either side of the hook.
3. The open-type lifting hook according to claim 1, characterized in that: Protective pads are provided at the top of the connecting cylinder and the bottom of the nut, and the inner diameter of the connecting cylinder is slightly larger than the diameter of the top of the hook.
4. An open-type lifting hook according to claim 1, characterized in that: One end of the second spring abuts against the inner top wall of the connecting seat, and the other end of the second spring abuts against one end of the push rod. The hook has a through hole inside, and the inner diameter of the through hole is slightly larger than the diameter of the push rod.
5. An open-type lifting hook according to claim 1, characterized in that: A baffle is welded to the outer surface of the pull rod, and a third spring is sleeved on the outer surface of the pull rod. One end of the third spring abuts against the baffle, and the other end of the third spring abuts against the right inner wall of the connecting block.
6. An open-type lifting hook according to claim 1, characterized in that: The inner wall of the limiting seat is provided with a number of slots, which are evenly distributed on the inner wall of the limiting seat.