Self-locking traction hook
By designing a self-locking traction hook, the adjustable hook body hook end and pull spring are used to achieve automatic locking, and combined with the movable traction arm to provide rotational freedom, it solves the problem of easy falling off of the existing traction hook and improves safety and service life.
Patent Information
- Application Number
- CN202422076488.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing traction hook has a simple structure, lacks buffering effect, and is easy to fall off, resulting in safety hazards.
A self-locking traction hook is designed, including a hook body, a mount and a traction arm. It can automatically lock by setting an adjustable hook body hook end with the accommodating cavity wall spacing and tension spring, reducing the risk of shedding, and providing rotational freedom through the movable connected traction arm to buffer stress.
The flexibility of hooking and decoupling operations is achieved, the labor intensity of the operator is reduced, the hook body is prevented from falling off, the safety hazards are eliminated, and the service life is extended by buffering stress.
Smart Images
Figure CN222905227U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle towing, and particularly relates to a self-locking towing hook. Background Art
[0002] Due to its working nature, a tractor must frequently hook and unhook during operation. The towing hook of the existing tractor has a simple structure. The most common connection method is to use a double hook for connection. This connection method is relatively fixed, without a buffering effect, and has low adjustability and flexibility. At the same time, during the driving process of the tractor, the towing hook is extremely likely to fall off due to uneven road surfaces, causing major safety accidents. Content of the Utility Model
[0003] In view of various deficiencies of the prior art, a self-locking towing hook is proposed to solve the technical problems of the prior art without a buffering effect and being prone to falling off.
[0004] To achieve the above object, the utility model provides the following technical solutions:
[0005] A self-locking towing hook includes a hook body, a mounting seat, and a towing arm. The mounting seat is arranged in a structure with a lower opening, and a receiving cavity is formed inside the mounting seat. The hook body penetrates through the mounting seat, and the hook end of the hook body extends into the receiving cavity. A tension spring is arranged between the hook body and the mounting seat. The distance between the hook end of the hook body and the cavity wall of the receiving cavity is adjustable to achieve the hooking and unhooking operations. The mounting seat is movably connected to the towing arm, enabling the towing arm to have a rotational degree of freedom in the vertical plane and a rotational degree of freedom in the horizontal plane.
[0006] This technical solution is further provided that a fixing seat is arranged above the mounting seat. A fixing pin that can slide relative to the inside of the fixing seat is arranged inside the fixing seat. The end of the fixing pin is connected to the hook body. The tension spring is sleeved around the fixing pin, and both ends of the tension spring are respectively connected to the hook body and the fixing seat.
[0007] This technical solution is further provided that a limiting block is arranged at the end of the fixing pin away from the hook body.
[0008] This technical solution is further provided that the end of the hook body located outside the receiving cavity is bent to form a touching part that is convenient for an operator to press.
[0009] This technical solution is further provided that a handle is arranged above the mounting seat.
[0010] This technical solution is further provided that a hook body rotating shaft is arranged at the connection between the hook body and the mounting seat, and a rotating shaft seat rotatably connected to the hook body rotating shaft is arranged on the mounting seat.
[0011] This technical solution is further configured such that the traction arm includes a first traction arm and a second traction arm. The first traction arm is movably connected to the mounting base through a first rotating shaft, the first traction arm is movably connected to the second traction arm through a second rotating shaft, and the first rotating shaft is perpendicular to the second rotating shaft.
[0012] This technical solution is further configured such that the second traction arm is provided with a bent structure, and a traction through-hole is provided at an end of the second traction arm away from the first traction arm.
[0013] The beneficial effects of the present utility model are as follows:
[0014] By setting the distance between the hook end of the hook body and the cavity wall of the accommodating cavity to be adjustable, the hooking and unhooking operations are realized. By setting the tension spring, automatic locking is realized, reducing the labor intensity of the operator. At the same time, it prevents the hook body from detaching from the towing vehicle / towed vehicle, eliminating potential safety hazards. By setting the movable connection between the mounting base and the traction arm, the traction arm is enabled to have a rotational degree of freedom in the vertical plane and a rotational degree of freedom in the horizontal plane, buffering the stress on the buffer self-locking traction hook and extending its service life. Description of the Drawings
[0015] Figure 1 is a schematic diagram of the self-locking traction hook in an embodiment of the present utility model;
[0016] Figure 2 is Figure 1 a partial schematic diagram at position A in
[0017] In the drawings: 1, mounting base; 2, hook body; 3, first traction arm; 4, second traction arm; 5, accommodating cavity; 6, hook end of the hook body; 7, actuating part; 8, handle; 9, ear seat; 10, first rotating shaft; 11, second rotating shaft; 12, fixed seat; 13, fixed pin; 14, tension spring; 15, limiting block; 16, hook body rotating shaft; 17, traction through-hole. Detailed Embodiments
[0018] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model will be clearly and completely described below in conjunction with the drawings of the present utility model. Based on the embodiments in the present application, other similar embodiments obtained by those of ordinary skill in the art without making creative efforts shall all fall within the scope of protection of the present application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only with reference to the directions of the drawings. Therefore, the directional terms used are for illustration rather than to limit the present invention.
[0019] The present utility model will be further described below in conjunction with the drawings and preferred embodiments.
[0020] According to an embodiment of the present invention, a self-locking towing hook is provided. Please refer to Figure 1 and Figure 2 , which includes a hook body 2, a mounting seat 1 and a towing arm. The mounting seat 1 is arranged in a structure with a lower opening, and a receiving cavity 5 is formed inside the mounting seat 1. The hook body 2 penetrates through the mounting seat 1, and the hook end 6 of the hook body extends into the receiving cavity 5. A tension spring 14 is arranged between the hook body 2 and the mounting seat 1. The distance between the hook end 6 of the hook body and the cavity wall of the receiving cavity 5 is adjustable to realize the hooking and unhooking operations. The mounting seat 1 is movably connected to the towing arm, so that the towing arm has a rotational degree of freedom in the vertical plane and a rotational degree of freedom in the horizontal plane.
[0021] It should be noted that by setting the distance between the hook end 6 of the hook body and the cavity wall of the receiving cavity 5 to be adjustable, the hooking and unhooking operations are realized. By setting the tension spring 14, automatic locking is realized, reducing the labor intensity of the operator. At the same time, it prevents the hook body 2 from detaching from the tractor / towed vehicle, eliminating potential safety hazards. By setting the mounting seat 1 to be movably connected to the towing arm, the towing arm has a rotational degree of freedom in the vertical plane and a rotational degree of freedom in the horizontal plane, buffering the stress on the self-locking towing hook and prolonging the service life.
[0022] In the self-locking towing hook of this embodiment, please refer to Figure 1 and Figure 2 , a fixing seat 12 is arranged above the mounting seat 1. A fixing pin 13 that can slide relative to it is arranged inside the fixing seat 12. The end of the fixing pin 13 is connected to the hook body 2. The tension spring 14 is sleeved around the fixing pin 13, and both ends of the tension spring 14 are respectively connected to the hook body 2 and the fixing seat 12.
[0023] It should be noted that a fixing hole is arranged inside the fixing seat 12. After the fixing pin penetrates through the fixing hole, it is connected to the hook body 2. When the hook body 2 moves away from the fixing seat 12, the distance between the hook end 6 of the hook body and the cavity wall of the receiving cavity 5 increases. At this time, the hooking and unhooking operations can be carried out. After the operation is completed, the tension spring 14 drives the hook body 2 to reset to realize self-locking. During this process, the fixing pin 13 and the fixing hole play a guiding role.
[0024] In the self-locking towing hook of this embodiment, please refer to Figure 1 and Figure 2 , a limiting block 15 is arranged at the end of the fixing pin 13 away from the hook body 2.
[0025] It should be noted that the size of the limiting block 15 is larger than the size of the fixing hole, preventing the fixing pin 13 from falling off from the fixing hole.
[0026] In the self-locking traction hook of this embodiment, please refer to Figure 1 and Figure 2 , the end of the hook body 2 located outside the accommodation cavity 5 is bent to form a touch part 7 that is convenient for the operator to press. Correspondingly, a hook body rotating shaft 16 is provided at the connection between the hook body 2 and the mounting seat 1, and a rotating shaft seat rotatably connected to the hook body rotating shaft 16 is provided on the mounting seat 1.
[0027] It should be noted that by pressing the touch part 7, the hook end 6 of the hook body rotates around the hook body rotating shaft 16, increasing the distance between it and the cavity wall of the accommodation cavity 5. At this time, the hooking and unhooking operations can be performed. After the operation is completed, the acting force on the touch part 7 disappears, and the tension spring 14 drives the hook body 2 to reset, realizing self-locking.
[0028] In the self-locking traction hook of this embodiment, please refer to Figure 1 and Figure 2 , a handle 8 is provided above the mounting seat 1 for easy movement.
[0029] In the self-locking traction hook of this embodiment, please refer to Figure 1 and Figure 2 , the traction arm includes a first traction arm 3 and a second traction arm 4. The first traction arm 3 is movably connected to the mounting seat 1 through a first rotating shaft 10, the first traction arm 3 is movably connected to the second traction arm 4 through a second rotating shaft 11, and the first rotating shaft 10 and the second rotating shaft 11 are perpendicular to each other.
[0030] It should be noted that an ear seat 9 is provided on the side of the mounting seat 1. One end of the first traction arm 3 is movably connected to the ear seat 9 through the first rotating shaft 10, enabling the first traction arm 3 to have a rotational degree of freedom in the vertical plane; the other end of the first traction arm 3 is movably connected to the second traction arm 4 through the second rotating shaft 11, enabling the second traction arm 4 to have a rotational degree of freedom in the horizontal plane, reducing the stress on the self-locking traction hook.
[0031] In the self-locking traction hook of this embodiment, please refer to Figure 1 and Figure 2 , the second traction arm 4 is provided with a bent structure, and a traction through hole 17 is provided at the end of the second traction arm 4 far from the first traction arm 3.
[0032] It should be noted that the bent structure can buffer stress to a certain extent and enhance the bending stiffness; the hook end 6 of the hook body and the traction through hole 17 are respectively connected to the tractor and the towed vehicle.
[0033] The above has given a detailed description of the present utility model. As described above, it is only the preferred embodiment of the present utility model, and the scope of implementation of the present utility model cannot be limited. That is, all equal changes and modifications made according to the scope of this application should still fall within the scope covered by the present utility model.
Claims
1. A self-locking traction hook, characterized in that: It includes a hook body, a mounting seat and a traction arm, the mounting seat is configured as a lower opening structure, and a accommodating cavity is provided inside the mounting seat, the hook body passes through the mounting seat, and the hook end of the hook body extends into the accommodating cavity, a tension spring is provided between the hook body and the mounting seat, and the distance between the hook end of the hook body and the cavity wall of the accommodating cavity is adjustable to realize hooking and unhooking operations, the mounting seat and the traction arm are movably connected, so that the traction arm has the freedom of rotation in the vertical plane and the freedom of rotation in the horizontal plane.
2. The self-locking traction hook according to claim 1, characterized in that: A fixing seat is arranged above the mounting seat, a fixing pin which can slide relative to the fixing seat is arranged inside the fixing seat, an end of the fixing pin is connected to the hook body, the tension spring is sleeved on the periphery of the fixing pin, and both ends of the tension spring are respectively connected to the hook body and the fixing seat.
3. The self-locking towing hook according to claim 2, characterized in that: A limiting block is arranged at the end of the fixing pin away from the hook body.
4. The self-locking traction hook according to claim 1, characterized in that: The end of the hook body located outside the accommodating cavity is bent to form a triggering portion that is convenient for an operator to press.
5. The self-locking traction hook according to claim 1, characterized in that: A handle is arranged above the mounting seat.
6. The self-locking traction hook according to claim 1 or 4, characterized in that: A hook body rotating shaft is arranged at the joint of the hook body and the mounting seat, and a rotating shaft seat rotatably connected to the hook body rotating shaft is arranged on the mounting seat.
7. The self-locking towing hook according to claim 1, characterized in that: The traction arm includes a first traction arm and a second traction arm, the first traction arm is movably connected to the mounting seat via a first rotating shaft, the first traction arm is movably connected to the second traction arm via a second rotating shaft, and the first rotating shaft is perpendicular to the second rotating shaft.
8. The self-locking towing hook according to claim 7, characterized in that: The second traction arm is configured as a bent structure, and a traction through hole is provided at an end of the second traction arm away from the first traction arm.