Anti-back-off hitch
By designing a locking pin and a stabilizing mechanism, the safety hazards of existing anti-reverse buckle traction devices are solved, ensuring that the locking rod is not easily lost and that the mechanical connection is stable, thus improving the practicality and safety of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TONGHE DAHAI AGRI MASCH CO LTD
- Filing Date
- 2025-10-11
- Publication Date
- 2026-07-21
AI Technical Summary
The existing anti-reverse locking device locks the pin by inserting a locking rod directly into the pin from the outside, which poses a safety hazard and has low practicality.
The system employs a locking mechanism and a stabilizing mechanism. The locking mechanism uses a limit block and a compression spring to automatically engage and fix the locking rod and the pin. The stabilizing mechanism uses a slider and a return spring to drive the U-shaped frame and the clamp to stabilize the mechanical connection.
It improves the safety and practicality of the device, ensures stable connection, reduces safety hazards of manual operation, and enhances the strength of mechanical connection.
Smart Images
Figure CN224528362U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical transportation technology, and in particular to an anti-reverse buckle traction device. Background Technology
[0002] The anti-reverse traction device is a safety device commonly used in railway and mechanical transportation equipment. It is primarily used to prevent traction equipment (such as trailers and trains) from accidentally detaching or reversing during transport. Its design purpose is to ensure stable equipment connection and avoid potential hazards.
[0003] The main functions of the anti-reverse traction device include: during the connection process, if an abnormality occurs or external force is applied, the anti-reverse traction device ensures that the connection will not loosen, maintaining the safe connection of the equipment. In some mechanical or railway systems, equipment may be affected by unstable operation or external factors; the anti-reverse traction device can effectively prevent the traction equipment from reversing or slipping, ensuring safety.
[0004] In existing technologies, most anti-reverse locking traction devices lock the buckle by inserting an external locking rod directly into the pin during mechanical connection. However, the locking rod is easy to lose, and the connection is done manually, which poses certain safety hazards and reduces the practicality of the device. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an anti-reverse buckle traction device, which aims to improve the safety hazards and low practicality of existing anti-reverse buckle traction devices, which mostly lock the buckle by directly inserting a locking rod into the pin while making mechanical connection.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an anti-reverse buckle traction device, comprising a housing, a pin slidably connected inside the housing, an installation rod slidably connected inside the housing, a hook fixedly connected to the side of the installation rod away from the housing, a locking mechanism provided at the top of the pin for fixing the pin, and a stabilizing mechanism provided inside the housing for stabilizing the connection of the mechanical equipment.
[0007] As a further description of the above technical solution: The locking mechanism includes a mounting shell, which is fixedly connected inside the outer shell. A compression spring is fixedly connected inside the mounting shell. A limit block is fixedly connected to the bottom of the compression spring. A locking rod is fixedly connected inside the limit block. The bottom of the locking rod engages with the top of the pin.
[0008] As a further description of the above technical solution: The limiting block is slidably connected inside the mounting housing, and the compression spring is sleeved on the outside of the clamping rod.
[0009] As a further description of the above technical solution: A pull ring is fixedly connected to the top of the lever.
[0010] As a further description of the above technical solution: The stabilizing mechanism includes a sliding rod slidably connected to the top of the housing. A slider is fixedly connected to the bottom of the sliding rod, and a return spring is fixedly connected to the bottom of the slider. Connecting rods are rotatably connected to both sides of the slider. U-shaped frames are fixedly connected to the bottom of both connecting rods, and connecting rods are fixedly connected to the bottom of both U-shaped frames. Clamps are fixedly connected to opposite sides of both connecting rods. A slot is provided on the outside of the mounting rod, and both clamps engage with the slot.
[0011] As a further description of the above technical solution: The slider is slidably connected to the portion of the housing, and both connecting rods are slidably connected inside the housing.
[0012] As a further description of the above technical solution: The bottom of the return spring is fixedly connected to the inside of the housing.
[0013] As a further description of the above technical solution: A handle is fixedly connected to the top of the slide bar.
[0014] This utility model has the following beneficial effects: 1. In this utility model, when connecting mechanical equipment or vehicles, the hook is installed on the hook and locked. The pull ring is used to pull the locking rod upward, causing the limiting block to retract into the mounting shell. After inserting the pin into the shell, the pull ring is released. The spring force pushes the limiting block to lower the locking rod and engage with the pin. This achieves the effect of locking the buckle in advance through the locking mechanism. The locking rod is fixed to the shell and is not easy to lose. The manual operation is relatively simple, ensuring the safety of the operation process and improving the practicality of the device.
[0015] 2. In this utility model, when installing the hook, pressing the handle down on the sliding rod causes the slider to move downward and compress the return spring. Two connecting rods drive two U-shaped frames, and two connecting rods separate the two clamps. After inserting the installation rod into the housing, releasing the handle causes the slider to move upward due to the rebound force of the return spring, causing the two clamps to come together and engage with the slot for fixation. This achieves the effect of strengthening the mechanical connection through a stabilizing mechanism, enhancing the stability of the device and improving its practicality. Attached Figure Description
[0016] Figure 1 This is a perspective view of an anti-reverse buckle traction device proposed in this utility model; Figure 2 This is a schematic diagram of the locking mechanism of an anti-reverse buckle traction device proposed in this utility model; Figure 3 This is a cross-sectional view of the mounting shell of an anti-reverse buckle traction device proposed in this utility model; Figure 4 This is a schematic diagram of the mounting rod of an anti-reverse buckle traction device proposed in this utility model; Figure 5 This is a schematic diagram of the stabilizing mechanism of an anti-reverse buckle traction device proposed in this utility model.
[0017] Legend: 1. Outer shell; 2. Pin rod; 3. Mounting shell; 4. Compression spring; 5. Limiting block; 6. Locking rod; 7. Pull ring; 8. Mounting rod; 9. Hook; 10. Slot; 11. Slide rod; 12. Slider; 13. Return spring; 14. Connecting rod; 15. U-shaped frame; 16. Connecting rod; 17. Clamp; 18. Handle. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Reference Figure 1 - Figure 3One embodiment of this utility model provides an anti-reverse buckle traction device, including a housing 1, which serves to fix the internal structure. A pin 2 is slidably connected inside the housing 1, which serves to engage and fix the structure. An installation rod 8 is slidably connected inside the housing 1, which serves to connect a hook 9. The hook 9 is fixedly connected to the side of the installation rod 8 away from the housing 1. A locking mechanism is provided at the top of the pin 2 to fix the pin 2. A stabilizing mechanism is provided inside the housing 1 to stabilize the connection of the mechanical equipment. The locking mechanism includes a mounting shell 3, which serves to fix the internal structure. The mounting shell 3 is fixedly connected to the inside of the outer shell 1. A compression spring 4 is fixedly connected inside the mounting shell 3. The compression spring 4 provides elastic force to push the limiting block 5. The bottom of the compression spring 4 is fixedly connected to the limiting block 5, which prevents the compression spring 4 from falling off. A locking rod 6 is fixedly connected inside the limiting block 5, which serves to engage and fix the mechanism. The bottom of the locking rod 6 engages with the top of the pin 2. The limiting block 5 is slidably connected inside the mounting shell 3. The compression spring 4 is sleeved on the outside of the locking rod 6. A pull ring 7 is fixedly connected to the top of the locking rod 6, which pulls the locking rod 6.
[0020] Reference Figure 1 and Figure 4 - Figure 5 The stabilizing mechanism includes a slide rod 11, which connects to a slider 12. The slide rod 11 is slidably connected to the top of the outer casing 1. The bottom of the slide rod 11 is fixedly connected to a slider 12, which connects to a return spring 13. The bottom of the slider 12 is fixedly connected to a return spring 13, which provides elastic force to push the slider 12. Both sides of the slider 12 are rotatably connected to connecting rods 14, which connect to U-shaped frames 15. The bottom of both connecting rods 14 is fixedly connected to U-shaped frames 15, which install connecting rods 16. The bottom of both U-shaped frames 15 is fixedly connected to connecting rods 16, which connect to clamps 17. The opposite sides of both connecting rods 16 are fixedly connected to clamps 17, which engage and fix the rods. The mounting rod 8 has a slot 10 on its outside, which engages and fixes the rods 17. Both clamps 17 engage with the slot 10. The slider 12 is slidably connected to the outer casing 1, both connecting rods 14 are slidably connected to the inside of the outer casing 1, the bottom of the return spring 13 is fixedly connected to the inside of the outer casing 1, and the top of the slider 11 is fixedly connected to the handle 18.
[0021] Working principle: When connecting mechanical equipment or vehicles, install the hook on the hook 9 and lock it. Pull the lever 6 upward by the pull ring 7 to make the limit block 5 retract into the mounting shell 3. After inserting the pin 2 into the shell 1, release the pull ring 7. The spring 4 will push the limit block 5 to make the lever 6 fall down and engage with the pin 2 to fix it.
[0022] When installing hook 9, press down on slide bar 11 by handle 18 to move slider 12 downward and compress return spring 13. Two connecting rods 14 drive two U-shaped brackets 15, and two connecting rods 16 separate two clamps 17. After inserting installation rod 8 into housing 1, release handle 18. The return force of return spring 13 pushes slider 12 upward, causing two clamps 17 to come together and engage with slot 10 for fixation.
[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A pull-back anti-reverse buckle device, comprising a housing (1), characterized in that: The housing (1) is slidably connected to a pin (2), and the housing (1) is slidably connected to an installation rod (8). The installation rod (8) is fixedly connected to a hook (9) on the side away from the housing (1). The top of the pin (2) is provided with a locking mechanism, which is used to fix the pin (2). The housing (1) is provided with a stabilizing mechanism, which is used to stabilize the connection of the mechanical equipment.
2. The anti-reverse buckle traction device according to claim 1, characterized in that: The locking mechanism includes a mounting shell (3), which is fixedly connected inside the outer shell (1). A compression spring (4) is fixedly connected inside the mounting shell (3). A limit block (5) is fixedly connected to the bottom of the compression spring (4). A locking rod (6) is fixedly connected inside the limit block (5). The bottom of the locking rod (6) engages with the top of the pin (2).
3. The anti-reverse buckle traction device according to claim 2, characterized in that: The limiting block (5) is slidably connected inside the mounting shell (3), and the compression spring (4) is sleeved on the outside of the clamping rod (6).
4. The anti-reverse buckle traction device according to claim 2, characterized in that: A pull ring (7) is fixedly connected to the top of the lever (6).
5. The anti-reverse buckle traction device according to claim 1, characterized in that: The stabilizing mechanism includes a slide rod (11), which is slidably connected to the top of the outer shell (1). A slider (12) is fixedly connected to the bottom of the slide rod (11). A return spring (13) is fixedly connected to the bottom of the slider (12). Connecting rods (14) are rotatably connected to both sides of the slider (12). A U-shaped frame (15) is fixedly connected to the bottom of each of the two connecting rods (14). A connecting rod (16) is fixedly connected to the bottom of each of the two U-shaped frames (15). A clamp (17) is fixedly connected to the opposite side of each of the two connecting rods (16). A slot (10) is provided on the outside of the mounting rod (8). Both clamps (17) engage with the slot (10).
6. The anti-reverse buckle traction device according to claim 5, characterized in that: The slider (12) is slidably connected to a portion of the outer casing (1), and both connecting rods (14) are slidably connected inside the outer casing (1).
7. The anti-reverse buckle traction device according to claim 5, characterized in that: The bottom of the return spring (13) is fixedly connected to the inside of the outer casing (1).
8. The anti-reverse buckle traction device according to claim 5, characterized in that: A handle (18) is fixedly connected to the top of the slide bar (11).