Rotary traction device
By designing a traction device with a rotating connection, the front and rear connecting bodies can be flipped and equipped with a top rod buffer structure, which solves the problems of high operation difficulty and damage caused by height fluctuations in the existing technology, and realizes convenient connection and stable operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG WILQI VEHICLE PARTS CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-19
AI Technical Summary
Existing towing devices are difficult to operate when the front and rear vehicle bodies are not at the same height, requiring multiple people to cooperate, and the towing device is easily damaged when the front and rear vehicle bodies fluctuate in height during vehicle operation.
Design a rotating traction device, in which the front and rear connecting bodies are rotatably connected. The rear connecting body can be flipped and is equipped with a push rod to prevent excessive flipping. It is also cushioned by a blocking component and a spring structure to adapt to vehicle body connections of different heights.
It reduces the difficulty of single-person operation, improves the connection stability of vehicles under different height conditions, and avoids damage to the traction device caused by height fluctuations.
Smart Images
Figure CN224375251U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of traction technology, specifically to a traction device or coupler for connection. Background Technology
[0002] A tow hitch is a standard piece of equipment in a vehicle, used to connect the front and rear bodies. When a connecting ring is installed on one body, a tow hitch with a pin is installed on the other body. The connecting ring is engaged with the pin, thus connecting the front and rear bodies.
[0003] Existing towing devices are generally fixed structures. When the front and rear vehicle bodies are at different heights, it is difficult to connect them. Of course, the towing device can also be set as a rotating front connector and a rotating rear connector. However, with the front connector fixed, the rear connector is easy to rotate to a vertical position. Since the towing device is heavy, the operator needs to exert a lot of force to move the rear connector to the same height as the front connector before connecting the rear connector to the towing ring on the rear vehicle body. This operation method is difficult and generally requires multiple people to work together. Utility Model Content
[0004] The main purpose of this invention is to provide a rotatable traction device or coupler to solve the problem that the existing rotatable traction devices are difficult to operate and require multiple people to cooperate when connecting the front and rear vehicle bodies for traction.
[0005] This utility model provides a rotating traction device, which includes a front connecting body and a rear connecting body. The rear connecting body is rotatably connected to the rear of the front connecting body, meaning that the rear connecting body can rotate around the rotatable connection point at the rear of the front connecting body. A rearwardly extending push rod is provided at the lower part of the front connecting body, and the push rod abuts against the rear connecting body when the rear connecting body swings downward.
[0006] Preferably, the lower part of the front connector is provided with an installation tube, the push rod is inserted into the installation tube, the push rod has a first blocking member on the rod section at the front of the installation tube; the push rod has a second blocking member on the rod section at the rear of the installation tube, and a tightening spring is provided between the second blocking member and the installation tube.
[0007] More preferably, the first blocking member and the second blocking member are nuts threaded onto the top rod or enlarged diameter sections provided on the top rod.
[0008] Preferably, the lower part of the rear connector is provided with a downwardly extending baffle, and the top rod abuts against the baffle when the rear connector is rotated downward to a horizontal position.
[0009] Preferably, the front part of the rear connector is provided with a hinge seat, the hinge seat includes two vertical hinge plates, the hinge plates are provided with a horizontal pivot, and the front connector is rotatably mounted on the pivot.
[0010] Preferably, the rear connector is provided with a pin seat and a pin. The pin seat includes an upper plate and a lower seat. The upper plate is provided with a pin hole, and the pin is inserted into the pin hole.
[0011] Preferably, a locking element is provided at the upper part of the pin hole. The locking element includes a fixing plate, which is fixed to the upper part of the upper plate body by a fixing rod. A gap is left between the fixing plate and the upper plate body. A support ring is provided at the fixing rod corresponding to the gap, and the fixing rod passes through the support ring. A locking plate is also provided between the fixing plate and the upper plate body. The locking plate is movable, and the pin shaft is provided with an annular groove. When the locking plate moves, it engages with the annular groove.
[0012] Preferably, the locking plate is provided with a strip-shaped hole, the locking plate moves along the direction of the strip-shaped hole, and a return spring is also provided in the strip-shaped hole, one end of the return spring abutting one end of the strip-shaped hole, and the other end abutting the support ring.
[0013] Preferably, the locking plate is further provided with a locking slot, which is figure-eight shaped; the upper plate is provided with a locking hole, a return spring is provided in the locking hole, and a locking rod is inserted into the locking hole to abut against the return spring; the fixing plate is provided with a through hole, and the upper part of the locking rod is a reduced diameter section that passes through the through hole, while the lower part of the locking rod cannot pass through the locking hole. The locking rod is configured such that when pressed down, the reduced diameter section can pass through the middle of the locking slot, and when the locking rod springs up, the locking rod cannot pass through the middle of the locking slot.
[0014] The rotary traction device provided by this utility model has the following advantages compared with the prior art:
[0015] The aforementioned rotating traction device includes a front connecting body and a rear connecting body located at the front. The front and rear connecting bodies are rotatably connected, so that after the front connecting body is fixed, the rear connecting body can be rotated and swung, thus facilitating adaptation to rear vehicle bodies of different heights. Simultaneously, when the rear connecting body is rotated downwards, to prevent it from rotating to face the ground under gravity, a push rod is provided at the lower part of the front connecting body. The push rod extends rearward, and when the rear connecting body is rotated downwards to a preset angle, the push rod can abut against the rear connecting body, preventing it from rotating excessively downwards, thereby reducing the difficulty of connecting the rear connecting body and the rear vehicle body.
[0016] Furthermore, during the operation of a vehicle equipped with a rotating traction device, the front and rear vehicle bodies may experience height fluctuations due to the different road surfaces they are on. Moreover, these height fluctuations are not consistent. The rotating connection of the front and rear connecting bodies allows the connection points of the front and rear vehicle bodies to adapt to the height changes of the front and rear vehicle bodies, thus preventing the traction device from being damaged by the forces caused by the height changes of the front and rear vehicle bodies. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0018] Obviously, the accompanying drawings described below are only some specific embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any creative effort.
[0019] Figure 1 This is a three-dimensional structural diagram of the rotating traction device in Embodiment 1 of this utility model.
[0020] Figure 2 This is a longitudinal cross-sectional view of the rotating traction device in Embodiment 1 of this utility model.
[0021] Figure 3 This is a cross-sectional view of the pin seat in the rotating traction device of Embodiment 1 of this utility model.
[0022] Explanation of icon numbers:
[0023] Detailed Implementation
[0024] 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.
[0025] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0027] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0030] Example 1
[0031] This embodiment provides a rotating traction device, which includes a front connecting body 1 and a rear connecting body 2. The rear connecting body 2 is rotatably connected to the rear of the front connecting body 1, meaning that the rear connecting body 2 can rotate around the rotatable connection point at the rear of the front connecting body 1. A rearwardly extending push rod 3 is provided at the lower part of the front connecting body 1, and the push rod 3 abuts against the rear connecting body 2 when the rear connecting body 2 swings downward.
[0032] In the aforementioned rotating traction device, the front connecting body 1 and the rear connecting body 2 are rotatably connected. When a vehicle equipped with the rotating traction device is in operation, the front and rear vehicle bodies may experience height fluctuations due to different road surfaces. Moreover, the height fluctuations of the front and rear vehicle bodies are not consistent. The rotatable connection of the front and rear connecting bodies 2 enables the connection part of the front and rear vehicle bodies to adapt to the height changes of the front and rear vehicle bodies, thus avoiding damage to the traction device caused by the force when the height of the front and rear vehicle bodies changes.
[0033] Meanwhile, when connecting the front and rear vehicle bodies, the front vehicle body is usually installed first. Of course, the rear vehicle body can also be installed first. After the front vehicle body is installed, in order to prevent the rear connecting body 2 from flipping downwards to a vertical position and reduce the workload of the workers in lifting the rear connecting body 2, a push rod 3 is set at the lower part of the front connecting body 1. The push rod 3 extends backwards. When the rear connecting body 2 flips downwards to a preset angle, the push rod 3 can push against the rear connecting body 2, preventing the rear connecting body 2 from flipping downwards excessively, thereby reducing the difficulty of connecting the rear connecting body 2 and the rear vehicle body.
[0034] Specifically, in this embodiment, in order to facilitate the installation of the top rod 3 and at the same time give the top rod 3 a certain buffering capacity, the lower part of the front connecting body 1 is provided with an installation tube 4, the top rod 3 is inserted into the installation tube 4, and the rod section of the top rod 3 at the front of the installation tube 4 is provided with a first blocking member 5. The first blocking member 5 prevents the top rod 3 from moving backward and disengaging from the installation tube 4. The rod section of the top rod 3 at the rear of the installation tube 4 is provided with a second blocking member 6. The second blocking member 6 can also prevent the top rod 3 from moving forward and disengaging from the installation tube 4. That is, the top rod 3 can only move back and forth within the installation tube 4 and cannot disengage from the installation tube 4. To provide the push rod 3 with a driving force to move backward, a clamping spring 7 is provided between the second blocking member 6 and the mounting tube 4. That is, the clamping spring 7 is held by the second blocking member 6 and the mounting tube 4 and sleeved on the push rod 3. The clamping spring 7 drives the push rod 3 to move backward. When the push rod 3 abuts against the rear connecting body 2, the clamping spring 7 can provide a certain buffering force. At the same time, the setting of the clamping spring 7 can also reduce the resistance of the operator when adjusting the height of the rear connecting body 2.
[0035] More specifically, in this embodiment, the first blocking member 5 and the second blocking member 6 are protrusions that prevent the top rod 3 from passing through the mounting tube 4. The first blocking member 5 and the second blocking member 6 can be nuts threaded onto the top rod 3 or enlarged diameter sections provided on the top rod 3. The enlarged diameter section is a rod section whose diameter is enlarged to be greater than the inner diameter of the mounting tube 4.
[0036] Specifically, in this embodiment, in order to facilitate the cooperation between the rear connecting body 2 and the top rod 3, a downwardly extending baffle 8 is provided at the lower part of the rear connecting body 2, and the top rod 3 abuts against the baffle 8 when the rear connecting body 2 is rotated downward to a horizontal position.
[0037] Specifically, this embodiment also provides a specific rotational connection method between the front connector 1 and the rear connector 2. In this embodiment, a hinge seat is provided at the front of the rear connector 2. The hinge seat includes two vertical hinge plates 9. A horizontal rotating shaft 10 is provided on the hinge plates 9. The front connector 1 is rotatably mounted on the rotating shaft 10.
[0038] Specifically, in this embodiment, the rear connector 2 is used to connect the towing ring of the rear vehicle body. To connect the towing ring, the rear connector 2 is provided with a pin seat 13 and a pin 13. The pin seat 13 includes an upper plate 11 and a lower seat 12. The upper plate 11 has a pin hole, and the pin 13 is inserted into the pin hole. When the towing ring extends into the gap between the upper plate 11 and the lower seat 12, the pin 13 is inserted downwards from the pin hole, thereby inserting into the towing ring and abutting against the lower seat 12, forming a connection between the towing ring and the rear vehicle body.
[0039] More specifically, to secure the pin 13, a locking element is provided at the upper part of the pin hole. The locking element includes a fixing plate 14, which is fixed to the upper part of the upper plate 11 by a fixing rod 18. A gap is left between the fixing plate 14 and the upper plate 11. A support ring 19 is provided at the fixing rod 18 corresponding to the gap, and the fixing rod 18 passes through the support ring 19. A locking plate 15 is also provided between the fixing plate 14 and the upper plate 11. The locking plate 15 is movable, and the pin 13 is provided with an annular groove. When the locking plate 15 moves, it engages with the annular groove. When it is necessary to secure the pin 13, the locking plate 15 moves until it engages with the annular groove, thereby locking the pin 13 and preventing it from moving. When it is not necessary to secure the pin 13, simply move the locking plate 15 to disengage it from the annular groove, thus facilitating the up-and-down movement of the pin 13.
[0040] More specifically, in this embodiment, to prevent the support ring 19 from affecting the movement of the locking plate 15, the locking plate 15 is provided with a strip-shaped hole 20, so that the support ring 19 is located within the strip-shaped hole 20. When there are two or more strip-shaped holes 20 and corresponding support rings 19, the locking plate 15 can move along the direction of the strip-shaped hole 20. The locking plate 15 moves along the direction of the strip-shaped hole 20, and a return spring is also provided within the strip-shaped hole 20. One end of the return spring abuts against one end of the strip-shaped hole 20, and the other end abuts against the support ring 19.
[0041] More specifically, to fix the position of the locking plate 15 and prevent the return spring from pushing the locking plate 15 to the locked or unlocked state, the locking plate 15 is also provided with a locking slot 17, which is a through hole. The locking slot 17 is figure-eight shaped, meaning that the width of the hole in the middle is reduced, allowing only the narrowed section to pass through. The upper plate 11 is provided with a locking hole, in which a return spring is installed, and a locking rod 16 is inserted to abut against the return spring. The fixing plate 14 is provided with a through hole, and the upper part of the locking rod 16 is a narrowed section with a reduced diameter, which passes through the through hole, while the lower part of the locking rod 16 cannot pass through the locking hole. The locking rod 16 is designed such that when pressed down, the narrowed section can pass through the middle of the locking slot 17, and when the locking rod 16 springs up, it cannot pass through the middle of the locking slot 17.
[0042] Of course, the above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model and should be protected by the present utility model.
Claims
1. A rotating traction device, characterized in that, It includes a front connector and a rear connector, wherein the rear connector is rotatably connected to the rear of the front connector. The lower part of the front connector is provided with a rearwardly extending push rod, which abuts against the rear connector when the rear connector swings downward.
2. The rotating traction device as described in claim 1, characterized in that, The lower part of the front connector is provided with an installation tube, the push rod is inserted into the installation tube, the push rod has a first blocking member on the rod section at the front of the installation tube; the push rod has a second blocking member on the rod section at the rear of the installation tube, and a tightening spring is provided between the second blocking member and the installation tube.
3. The rotating traction device as described in claim 2, characterized in that, The first blocking member and the second blocking member are nuts threaded onto the top rod or expanded diameter sections provided on the top rod.
4. The rotating traction device as described in claim 1, characterized in that, The lower part of the rear connector is provided with a downwardly extending baffle, and when the rear connector is rotated downward to a horizontal position, the top rod abuts against the baffle.
5. The rotating traction device as described in claim 1, characterized in that, The rear connector is provided with a hinge seat at the front, the hinge seat includes two vertical hinge plates, the hinge plates are provided with a horizontal pivot, and the front connector is rotatably mounted on the pivot.
6. The rotating traction device as described in claim 1, characterized in that, The rear connector is provided with a pin seat and a pin. The pin seat includes an upper plate and a lower seat. The upper plate is provided with a pin hole, and the pin is inserted into the pin hole.
7. The rotating traction device as described in claim 6, characterized in that, A locking element is provided at the upper part of the pin hole. The locking element includes a fixing plate. The fixing plate is fixed to the upper part of the upper plate body by a fixing rod. A gap is left between the fixing plate and the upper plate body. A support ring is provided at the fixing rod corresponding to the gap. The fixing rod passes through the support ring. A locking plate is also provided between the fixing plate and the upper plate. The locking plate is movable, and the pin is provided with an annular groove. When the locking plate moves, it is engaged with the annular groove.
8. The rotating traction device as described in claim 7, characterized in that, The locking plate is provided with a strip-shaped hole, and the locking plate moves along the direction of the strip-shaped hole. A return spring is also provided in the strip-shaped hole, with one end of the return spring abutting one end of the strip-shaped hole and the other end abutting the support ring.
9. The rotating traction device as described in claim 8, characterized in that, The locking plate is also provided with a locking slot, which is figure-eight shaped; the upper plate is provided with a locking hole, a return spring is provided in the locking hole, and a locking rod is inserted into the locking hole to abut against the return spring; the fixing plate is provided with a through hole, the upper part of the locking rod is a reduced diameter section, the reduced diameter section passes through the through hole, and the lower part of the locking rod cannot pass through the locking hole; The locking rod is arranged to be able to pass through the middle part of the locking slot hole when being pressed down, and the locking rod is unable to pass through the middle part of the locking slot hole when being popped up.