Anti-drop crane hook device
By designing an anti-detachment mechanism and using a combination of elastic telescopic rods and anti-detachment blocks, the problem of the anti-detachment plate not being able to reset after hoisting in existing anti-detachment lifting hooks has been solved, thus enabling convenient use of the hook during the hoisting process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN AOLAIDA HOISTING MACHINERY CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-07
AI Technical Summary
The existing anti-detachment lifting hooks cannot reset their anti-detachment plates after lifting heavy objects, causing the hooks to lose their anti-detachment function and making them inconvenient to use.
Design an anti-detachment mechanism, including two symmetrically arranged elastic telescopic rods and an anti-detachment block. The elastic telescopic rods are connected by a rotating rod and a receiving groove. A limiting component and a spring ensure that the anti-detachment block can be reset after hoisting. The anti-detachment block is located outside the hook and does not occupy space.
This design ensures that the anti-detachment block does not obstruct the hook's reset during the lifting of heavy objects, thus guaranteeing the hook's anti-detachment function and making it more convenient to use.
Smart Images
Figure CN224467369U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crane hook technology, and in particular relates to a crane hook device that prevents detachment. Background Technology
[0002] like Figure 6 As shown, in the prior art, most anti-detachment lifting hooks have an anti-detachment plate 3 installed at the hook-shaped opening of the hook. Specifically, one end of the anti-detachment plate 3 abuts against the hook tip, and the other end of the anti-detachment plate 3 is connected to the hook body of the hook by a torsion spring or the like. In use, by rotating the anti-detachment plate 3 into the hook, the hook-shaped opening of the hook can be opened to lift heavy objects. However, with the above-mentioned setting, after the hook-shaped opening of the hook is opened, because the anti-detachment plate 3 is located inside the hook, sometimes the heavy object will prevent the anti-detachment plate 3 from rotating outward after lifting, causing the anti-detachment plate 3 to be unable to return to its original position and the hook to lose its anti-detachment function. This causes many inconveniences in use. Therefore, there are still shortcomings and deficiencies in the prior art. Utility Model Content
[0003] The purpose of this invention is to provide a crane hook device that prevents detachment, in order to solve the problems mentioned in the background art.
[0004] The technical solution adopted by this utility model to solve the above problems is as follows:
[0005] A crane hook device for preventing detachment includes a vertically distributed hook body. The hook body includes a hook body and a hook tip, which are integrally formed. A horizontal anti-detachment groove is provided on the inner side of the hook tip. An anti-detachment mechanism is installed at the end of the hook body away from the hook tip, located at the hook-shaped opening of the hook body. The anti-detachment mechanism includes two elastic telescopic rods symmetrically arranged on both sides of the hook body. The ends of the elastic telescopic rods near the hook body are rotatably connected to the hook body, and the other ends of the elastic telescopic rods are movable ends. An anti-detachment block is installed between the movable ends of the two elastic telescopic rods. The side of the anti-detachment block away from the elastic telescopic rod is located in the anti-detachment groove.
[0006] Furthermore, each of the elastic telescopic rods includes a rotating rod. The end of the rotating rod away from the anti-detachment block is rotatably connected to the hook body. The other end of the rotating rod is coaxially provided with a receiving groove, and a movable rod is slidably connected through the receiving groove. A limiting component that can prevent the movable rod from detaching from the rotating rod is installed at the opening of the receiving groove. A spring that is parallel to the rotating rod is installed in the receiving groove. One end of the movable rod abuts against the spring, and the other end of the movable rod is located outside the rotating rod and connected to the anti-detachment block.
[0007] Furthermore, each of the limiting components includes a limiting ring, which is fixedly installed at the opening of the receiving groove and coaxially arranged with the rotating rod. After the end of the movable rod near the spring slides through the limiting ring, a limiting plate that is slidably connected to the rotating rod is fixedly installed. The diameter of the limiting plate is larger than the inner diameter of the limiting ring, and the side of the limiting plate away from the movable rod abuts against the spring.
[0008] Furthermore, a threaded rod parallel to the anti-detachment block is provided between the two elastic telescopic rods near one end of the hook body. The threaded rod slides through the hook body, and both ends of the threaded rod slide through the two elastic telescopic rods respectively and are fitted with nuts.
[0009] Furthermore, the end of the elastic telescopic rod closest to the anti-detachment block is located inside the anti-detachment block and is connected to the anti-detachment block by connecting bolts.
[0010] Furthermore, a U-shaped plate located outside the anti-detachment groove is fixedly connected to the top surface of the anti-detachment block, and the U-shaped opening of the U-shaped plate faces the anti-detachment block.
[0011] The beneficial effects of this utility model by adopting the above technical solution are as follows:
[0012] In its initial state, when the anti-detachment block is located in the anti-detachment groove on the side away from the elastic telescopic rod, the anti-detachment mechanism can close the hook-shaped opening of the hook body, thus enabling the hook body to have an anti-detachment function. During use, by compressing the elastic telescopic rod, the anti-detachment block can be disengaged from the anti-detachment groove, and then the anti-detachment mechanism can be rotated outwards to open the hook-shaped opening of the hook body for lifting heavy objects. After lifting the heavy object, by compressing the elastic telescopic rod and rotating the anti-detachment mechanism inwards, the anti-detachment block can return to its initial position to prevent the heavy object from falling. In summary, with this design, during the lifting process, because the anti-detachment mechanism is located outside the hook body and does not occupy space inside the hook body, the heavy object will not obstruct the inward rotation and reset of the anti-detachment mechanism after lifting, thus facilitating its use. Attached Figure Description
[0013] Figure 1 This is one of the structural schematic diagrams of this utility model;
[0014] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle;
[0015] Figure 3 for Figure 1 A three-dimensional structural diagram of the middle part of the device;
[0016] Figure 4 This is the second structural schematic diagram of the present invention;
[0017] Figure 5This is a schematic diagram of the structure of some of the devices of this utility model;
[0018] Figure 6 This is a schematic diagram of the structure of an anti-detachment lifting hook in the prior art.
[0019] Reference numerals: 1. Hook body; 11. Hook body; 12. Hook tip; 13. Anti-detachment groove; 2. Anti-detachment mechanism; 21. Elastic telescopic rod; 211. Rotating rod; 212. Receiving groove; 213. Movable rod; 214. Spring; 215. Limiting ring; 216. Limiting disc; 22. Anti-detachment block; 23. Threaded rod; 24. Nut; 25. Connecting bolt; 26. U-shaped plate; 3. Anti-detachment plate. Detailed Implementation
[0020] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0021] like Figures 1 to 5 As shown, this utility model provides a crane hook device for preventing detachment, including a vertically distributed hook body 1. The hook body 1 includes a hook body 11 and a hook tip 12, which are integral structures. The inner side of the hook tip 12 is provided with an anti-detachment groove 13 that passes through the hook tip 12 horizontally. An anti-detachment mechanism 2 is installed at the end of the hook body 11 away from the hook tip 12, located at the hook-shaped opening of the hook body 1. The anti-detachment mechanism 2 includes two elastic telescopic rods 21 symmetrically arranged on both sides of the hook body 1. The elastic telescopic rods 21 can be compressed under the action of external force. When the external force disappears, the elastic telescopic rod 21 can rebound and extend; the end of the elastic telescopic rod 21 near the hook body 11 is rotatably connected to the hook body 11, and the other end of the elastic telescopic rod 21 is the movable end, and an anti-detachment block 22 is installed between the movable ends of the two elastic telescopic rods 21. The side of the anti-detachment block 22 away from the elastic telescopic rod 21 is located in the anti-detachment groove 13. At this time, the lifting hook device of this utility model is in the initial state, and the anti-detachment mechanism 2 can close the hook-shaped opening of the hook body 1 so that the hook body 1 has an anti-detachment function.
[0022] In use, by compressing the elastic telescopic rod 21, the anti-detachment block 22 can be disengaged from the anti-detachment groove 13. Then, the anti-detachment mechanism 2 can be rotated outward to open the hook-shaped opening of the hook body 1 for hoisting heavy objects. After hoisting the heavy object, by compressing the elastic telescopic rod 21 and rotating the anti-detachment mechanism 2 inward, the anti-detachment block 22 can be returned to its initial position to prevent the heavy object from falling off. In general, with the above-mentioned arrangement, during the hoisting process, since the anti-detachment mechanism 2 is located outside the hook body 1, it does not occupy the space inside the hook body 1. Thus, after hoisting the heavy object, the heavy object will not obstruct the anti-detachment mechanism 2 from rotating inward to reset, making it convenient to use.
[0023] The specific installation method of the elastic telescopic rod 21 is as follows: Figures 1 to 4 As shown, each elastic telescopic rod 21 includes a rotating rod 211. The end of the rotating rod 211 furthest from the anti-detachment block 22 is rotatably connected to the hook body 11. The other end of the rotating rod 211 is coaxially provided with a receiving groove 212, through which a movable rod 213 is slidably connected. Limiting components that prevent the movable rod 213 from detaching from the rotating rod 211 are installed at the opening of the receiving groove 212. A spring 214, parallel to the rotating rod 211, is installed inside each receiving groove 212. One end of the movable rod 213 abuts against the spring 214, and the other end of the movable rod 213 is located outside the rotating rod 211 and connected to the anti-detachment block 22. Specifically, when the anti-detachment block 22 moves away from the rotating rod 211... When one side of the elastic telescopic rod 21 is located within the anti-detachment groove 13, the spring 214 is in a semi-compressed state. At this time, when it is necessary to lift heavy objects, by holding the movable rod 213, the movable rod 213 can be used to continue compressing the spring 214 to shorten the elastic telescopic rod 21. In this way, after the anti-detachment block 22 is disengaged from the anti-detachment groove 13, the anti-detachment mechanism 2 can be rotated outward. After lifting heavy objects, after shortening the elastic telescopic rod 21, the anti-detachment mechanism 2 can be rotated inward again until the anti-detachment block 22 is aligned with the anti-detachment groove 13. Then, the movable rod 213 is released. At this time, under the action of the spring 214, the elastic telescopic rod 21 can be extended to restore the anti-detachment block 22 to its initial position and prevent the heavy objects from falling.
[0024] The specific settings for the limit component are as follows: Figure 1 , Figure 2 and Figure 4 As shown, each limiting component includes a limiting ring 215. The limiting rings 215 are fixedly installed at the opening of the receiving groove 212 and are coaxially arranged with the rotating rod 211. The end of the movable rod 213 near the spring 214 slides through the limiting ring 215 and is fixedly fitted with a limiting disc 216 that is slidably connected to the rotating rod 211. The diameter of the limiting disc 216 is larger than the inner diameter of the limiting ring 215, and the side of the limiting disc 216 away from the movable rod 213 abuts against the spring 214. At this time, during use, the movable rod 213 can compress the spring 214 through the limiting disc 216; while the limiting ring 215 can prevent the limiting disc 216 from coming out of the receiving groove 212, thereby preventing the movable rod 213 from coming out of the rotating rod 211.
[0025] Furthermore, such as Figures 1 to 4As shown, a threaded rod 23 parallel to the anti-detachment block 22 is provided between the two elastic telescopic rods 21 near one end of the hook body 11. The threaded rod 23 slides through the hook body 11, and both ends of the threaded rod 23 slide through the two elastic telescopic rods 21 and are fitted with nuts 24. Specifically, there is a gap between the nut 24 and the elastic telescopic rod 21, which does not affect the rotation of the anti-detachment mechanism 2. By setting the nut 24, the axial movement of the threaded rod 23 can be restricted to prevent the threaded rod 23 from falling off. Secondly, after removing the nut 24 located at one end of the threaded rod 23, the threaded rod 23 can be pulled out, and then the anti-detachment mechanism 2 can be removed, which makes it easy to install and remove the anti-detachment mechanism 2 from the hook body 1.
[0026] Furthermore, such as Figures 1 to 4 As shown, the end of the elastic telescopic rod 21 near the anti-detachment block 22 is located inside the anti-detachment block 22 and connected to the anti-detachment block 22 by the connecting bolt 25. Specifically, a groove structure is provided on the side of the anti-detachment block 22 near the elastic telescopic rod 21, and the connecting bolt 25 is threaded to the anti-detachment block 22, with the threaded end of the connecting bolt 25 located inside the groove structure. In addition, a through hole is provided on the end of the elastic telescopic rod 21 near the anti-detachment block 22, which is opposite to the position of the connecting bolt 25. During assembly, the elastic telescopic rod 21 can be inserted into the groove structure first, and then the connecting bolt 25 can be rotated until the threaded end of the connecting bolt 25 is screwed into the through hole on the elastic telescopic rod 21. Then the elastic telescopic rod 21 can be connected to the anti-detachment block 22, which facilitates the assembly and disassembly of the elastic telescopic rod 21 and the anti-detachment block 22.
[0027] Furthermore, such as Figures 1 to 4 As shown, a U-shaped plate 26 located outside the anti-detachment groove 13 is fixedly connected to the top surface of the anti-detachment block 22. The U-shaped opening of the U-shaped plate 26 faces the anti-detachment block 22. Specifically, when in use, the elastic telescopic rod 21 can be easily compressed by holding the U-shaped plate 26 for easy use.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A crane hook device for preventing detachment, comprising a vertically distributed hook body, wherein the hook body includes a hook body portion and a hook tip portion that are integrally formed, characterized in that: The inner side of the hook tip is provided with a horizontal anti-detachment groove that penetrates the hook tip. The end of the hook body away from the hook tip is equipped with an anti-detachment mechanism located at the hook-shaped opening of the hook body. The anti-detachment mechanism includes two elastic telescopic rods symmetrically arranged on both sides of the hook body. The end of each elastic telescopic rod near the hook body is rotatably connected to the hook body. The other end of each elastic telescopic rod is a movable end. An anti-detachment block is installed between the movable ends of the two elastic telescopic rods. The side of the anti-detachment block away from the elastic telescopic rod is located in the anti-detachment groove.
2. The anti-detachment crane hook device according to claim 1, characterized in that: Each of the elastic telescopic rods includes a rotating rod. The end of the rotating rod away from the anti-detachment block is rotatably connected to the hook body. The other end of the rotating rod is coaxially provided with a receiving groove, and a movable rod is slidably connected through the receiving groove. A limiting component that can prevent the movable rod from detaching from the rotating rod is installed at the opening of the receiving groove. A spring that is parallel to the rotating rod is installed in the receiving groove. One end of the movable rod abuts against the spring, and the other end of the movable rod is located outside the rotating rod and connected to the anti-detachment block.
3. The anti-detachment crane hook device according to claim 2, characterized in that: Each limiting component includes a limiting ring, which is fixedly installed at the opening of the receiving groove and coaxially arranged with the rotating rod. After the end of the movable rod near the spring slides through the limiting ring, a limiting plate that is slidably connected to the rotating rod is fixedly installed. The diameter of the limiting plate is larger than the inner diameter of the limiting ring, and the side of the limiting plate away from the movable rod abuts against the spring.
4. The anti-detachment crane hook device according to claim 1, characterized in that: A threaded rod parallel to the anti-detachment block is provided between the two elastic telescopic rods near one end of the hook body. The threaded rod slides through the hook body, and both ends of the threaded rod slide through the two elastic telescopic rods and are fitted with nuts.
5. The anti-detachment crane hook device according to claim 1, characterized in that: The end of the elastic telescopic rod closest to the anti-detachment block is located inside the anti-detachment block and is connected to the anti-detachment block by connecting bolts.
6. A crane hook anti-detachment device according to any one of claims 1-5, characterized in that: A U-shaped plate located outside the anti-detachment groove is fixedly connected to the top surface of the anti-detachment block, and the U-shaped opening of the U-shaped plate faces the anti-detachment block.