Self-locking tow hook device

Abstract

The utility model discloses a self-locking tow hook device, which belongs to the field of tow hook self-locking and comprises a traction component and a towed component, the towed component comprises a U-shaped plate, reserved openings are symmetrically formed in the U-shaped plate, a movable rotating component is arranged on one side edge of the U-shaped plate and is connected with a locking pin, and the locking pin is connected with the traction component. The locking pin is movably inserted into the reserved opening in a penetrating mode, and the traction component is movably connected with the locking pin in a penetrating mode. A movable rotating assembly is arranged on a U-shaped plate in the pulled part, the rotating assembly is connected with a locking pin, the locking pin is movably inserted into a reserved opening in a penetrating mode, the traction part can push the locking pin to be movably connected with the locking pin in an inserted mode, and therefore mutual self-locking of the traction part and the pulled part is achieved. Time and labor are saved, the universality is high, the working efficiency is greatly improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of self-locking trailer hooks, specifically to a self-locking trailer hook device. Background Technology

[0002] With the rapid development of various industries and the increasing number of companies producing various products, every enterprise shares a common characteristic: the internal transfer of materials and goods. Tractors need to transport cargo boxes or shelves loaded with materials or semi-finished products to the production site or designated locations. The most common connection between the tractor and the cargo box or shelf is the trailer hook. Conventional trailer hook locking or unlocking requires manual operation by an assistant to remove the locking pin, move the tractor end to the locking end, and then have the assistant restore the locking pin to complete the locking process. Removing the locking pin, disengaging from the tractor end, and then putting the locking pin back completes the unlocking process. This operation is time-consuming, labor-intensive, and costly. To solve these problems, this utility model proposes a self-locking trailer hook structure that is simple in structure, easy to implement, and highly versatile. Utility Model Content

[0003] The purpose of this invention is to provide a self-locking trailer hook device to solve the problem that conventional trailer hook locking requires manual operation by auxiliary personnel, which is time-consuming and labor-intensive.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] A self-locking trailer hitch device includes a traction component and a towed component. The towed component includes a U-shaped plate with symmetrically arranged pre-reserved openings. A movable rotating component is provided on one side of the U-shaped plate. The rotating component is connected to a locking pin, which is movably inserted into the pre-reserved opening. The traction component is movably connected to the locking pin.

[0006] Preferably, the rotating assembly includes two pin sleeves, which are symmetrically fixed on one side of the U-shaped plate. A rotating pin is movably inserted into the two pin sleeves. The rotating pin is fixedly connected to the locking pin. A torsion spring for resetting is installed on the outside of the rotating pin. One end of the torsion spring is connected to the rotating pin and the other end is connected to the pin sleeve.

[0007] Preferably, the two pin sleeves are welded to one side of the U-shaped plate.

[0008] Preferably, both ends of the U-shaped plate are bent outwards and rounded at the corners.

[0009] Preferably, bolts II are evenly distributed on the bottom surface of the U-shaped plate.

[0010] Preferably, one end of the locking pin is concave, and the other end is movably inserted into the reserved opening.

[0011] Preferably, the traction component includes a traction plate, the traction plate having a pre-drilled slot for a locking pin, and the locking pin being movably inserted into the pre-drilled slot for the locking pin.

[0012] Preferably, there are two traction plates, which are welded together as one unit.

[0013] Preferably, one end of each of the two traction plates is bent outwards, and bolts I are symmetrically arranged on the bent surfaces.

[0014] With the above structure, this utility model has the following advantages:

[0015] This invention features a movable rotating component on a U-shaped plate in the traction component. The rotating component is connected to a locking pin, which is movably inserted into a pre-reserved opening. The traction component can push the locking pin to move and insert into it, thereby achieving mutual self-locking between the traction component and the traction component. This device has a simple structure, is easy to manufacture and operate, saves time and effort, and has strong versatility, greatly improving work efficiency and reducing labor intensity.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the traction component of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the traction component of this utility model;

[0021] Figure 4 This is a flowchart of the self-locking process of the coupler of this utility model;

[0022] Figure 5 This is a flowchart of the coupler unlocking process of this utility model;

[0023] Figure 6 This is a schematic diagram of the handheld tool for unlocking and releasing the lock according to this utility model.

[0024] In the diagram: 1. Traction component; 11. Traction plate; 111. Pin pre-reserved opening; 112. Bolt I; 2. Tractioned component; 21. U-shaped plate; 211. Pre-reserved opening; 212. Bolt II; 22. Rotating assembly; 221. Pin sleeve; 222. Rotating pin; 23. Locking pin. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] The present invention will now be described in further detail in conjunction with the full text.

[0028] Combined with appendix Figures 1-6 A self-locking trailer hook device was designed, consisting of a traction component 1 and a towed component 2. The towed component 2 includes a U-shaped plate 21 with symmetrically arranged reserved openings 211 of the same size. A movable rotating component 22 is provided on one side of the U-shaped plate 21, and a locking pin 23 is connected to the rotating component 22. The locking pin 23 is movably inserted into the reserved opening 211. The traction component 1 is inserted into the opening of the U-shaped plate 21, thereby pushing the locking pin 23 to move and interlock with it, thus realizing the mutual self-locking between the traction component 1 and the towed component 2. This device has a simple structure, is easy to implement, is easy to operate, saves time and effort, and has strong versatility, greatly improving work efficiency and reducing labor intensity.

[0029] like Figures 1 to 3As shown, the rotating assembly 22 includes two pin sleeves 221, which are symmetrically welded and fixed to one side of the U-shaped plate 21. A rotating pin 222 is movably inserted into each pin sleeve 221 and is fixedly connected to a locking pin 23. Both ends of the U-shaped plate 21 are bent outwards and rounded to avoid rigid contact and damage. Bolts II 212 are evenly distributed on the bottom surface of the U-shaped plate 21 for connection to the towed vehicle. One end of the locking pin 23 is recessed. The shape can be used as a handle when unlocking, making it convenient for staff to hold or for easy operation with auxiliary tools. The other end is movably inserted into the reserved opening 211. The traction component 1 includes a traction plate 11, on which a pin reserved opening 111 is provided, and a locking pin 23 is movably inserted into the pin reserved opening 111. There are two traction plates 11, which are welded together as one piece. One end of each of the two traction plates 11 is bent outwards, and bolts I112 are symmetrically arranged on the bent surface for connecting with the traction vehicle.

[0030] In specific implementation of this utility model, such as Figure 4 As shown. Specifically, the usage process for achieving self-locking is as follows: First, install the towing part 1 on the tractor and the towing part 2 on the towed vehicle, ensuring the installation heights correspond to avoid mismatches; then, the tractor plate 11 of the tractor is pushed inward along the opening of the U-shaped plate 21. When the tractor plate 11 contacts the locking pin 23, the locking pin 23 will rotate around the axis of the rotating pin 222 as the tractor plate 11 is fed, activating the torsion spring; when the end of the tractor plate 11 reaches the bottom of the U-shaped plate 21... The locking pin 23 does not contact the traction plate 11. Due to its own weight and the torsion spring, the locking pin 23 will rotate back to its original position around the axis of rotation. At the same time, it passes through the reserved opening 211 of the U-shaped plate 21 and the reserved opening 111 of the pin on the traction plate 11, thus realizing the self-locking function. Since the locking pin 23 and the rotating pin 222 are welded together to form a whole, the locking pin 23 can only rotate around the axis of the rotating pin 222, and the center of gravity is not on the axis of the rotating pin 222. Therefore, the locking pin 23 will always be in the locked state when it is not subjected to external force.

[0031] If the driver of the towing vehicle can visually observe the above situation from inside the vehicle, the locking process can be completed without leaving the vehicle, which greatly improves work efficiency and reduces labor intensity.

[0032] When installing the towing component on the tractor and the towed vehicle on the towing component, the installation heights must correspond to avoid any mismatch.

[0033] In specific implementation of this utility model, such as Figure 5 and Figure 6As shown. To unlock: First, move the tractor unit 1 with the towing plate 11 to the bottom of the U-shaped plate 21. Then, hold the handle of the locking pin 23 or use an unlocking auxiliary hand tool to rotate the locking pin 23 counterclockwise to its limit. Next, move the tractor unit 1 so that it is completely detached from the towed part 2. Release the locking pin 23, and it will automatically rotate back to its original position due to its own weight. The above operation completes the unlocking steps. If the driver of the tractor unit can reach the handle of the locking pin 23 and rotate it using the unlocking auxiliary hand tool, the unlocking operation can be completed without leaving the vehicle, which can greatly improve work efficiency and reduce labor intensity.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout the text are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A self-locking trailer coupling device comprising a towing part (1) and a towed part (2), characterized in that, The traction component (2) comprises a U-shaped plate (21) with symmetrically opened reservation openings (211), a movable rotating assembly (22) arranged on one side of the U-shaped plate (21), a locking pin (23) connected to the rotating assembly (22), and the locking pin (23) movably inserted into the reservation openings (211), and the traction component (1) is movably connected with the locking pin (23).

2. A self-locking trailer hitch device according to claim 1, wherein, The rotating assembly (22) comprises two pin sleeves (221) symmetrically fixed on one side of the U-shaped plate (21), and a rotating pin (222) movably inserted into the pin sleeves (221), the rotating pin (222) is fixedly connected to the locking pin (23), and the outer side of the rotating pin (222) is provided with a torsion spring for resetting, one end of the torsion spring is connected to the rotating pin (222) and the other end is connected to the pin sleeve (221).

3. A self-locking trailer hitch device according to claim 2, wherein, The two pin sleeves (221) are welded on one side of the U-shaped plate (21).

4. A self-locking trailer hitch device according to claim 3, wherein, The two ends of the U-shaped plate (21) are bent towards the outer side and are both chamfered.

5. A self-locking trailer hitch device according to claim 4, wherein, The U-shaped plate (21) is provided with bolt II (212) on the bottom surface.

6. A self-locking trailer hitch device according to claim 1, wherein, One end of the locking pin (23) is arranged in a "concave" shape, and the other end is movably inserted into the reservation openings (211).

7. A self-locking trailer hitch device according to claim 1, wherein, The traction component (1) comprises a traction plate (11) with a pin reservation opening (111), and the locking pin (23) is movably inserted into the pin reservation opening (111).

8. A self-locking trailer hitch device according to claim 7, wherein, The traction plate (11) is two and is integrally welded.

9. A self-locking trailer hitch device according to claim 8, wherein, The two traction plates (11) are respectively bent towards the outer side at one end, and the bolt I (112) is symmetrically arranged on the bent surface.

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