Tow vehicle capable of preventing tow hitch from unhooking

Abstract

The utility model relates to the technical fields of towing vehicle, and specifically discloses a towing vehicle capable of preventing towing bolt from unhooking, which comprises a vehicle body mechanism and a towing mechanism, the vehicle body mechanism comprises a vehicle body, the forward moving mechanism comprises a positioning frame, a towing bolt and a limiting piece, the positioning frame comprises a support plate fixed at the tail of the vehicle body and a plurality of positioning plates arranged on the support plate in the height direction of the support plate, two adjacent positioning plates form a bolt hanging area, the bolt hanging area is used for placing the connecting part at the front end of the trailer, the towing bolt can be inserted between the plurality of positioning plates and can be inserted on the connecting part to lock the connecting part, the limiting piece is fixed on the uppermost positioning plate, when the towing bolt rises to the first preset height, the limiting piece can abut against one side of the bottom end of the towing bolt, the limiting piece can limit the towing bolt from completely separating from the positioning frame, the towing bolt does not need to be reinserted, the towing operation is more convenient, and the towing bolt can be prevented from being damaged due to collision with other components.

Description

Technical Field

[0001] This utility model relates to the technical field of tractor vehicles, and specifically to a tractor vehicle that can prevent the towing bolt from disengaging. Background Technology

[0002] A tractor unit is a commonly used vehicle in factories. It is typically used to tow trailers and drive them to move. It does not require a separate power unit for the trailer, and multiple trailers can be connected to the same tractor unit, which can save costs.

[0003] The main component used for towing in a tractor is the towing mechanism located at the rear of the vehicle. This towing mechanism typically includes a positioning frame and a towing bolt. The positioning frame has an area for accommodating the connection part of the towed vehicle. The towing bolt can be inserted into this area to lock the towed vehicle. However, when unlocking, the towing bolt needs to rise out of this area. But if the towing bolt rises too much, it may detach from the positioning frame, causing it to fall to the ground, which can easily lead to wear. Furthermore, it is quite troublesome to reinsert the towing bolt into the positioning frame. Utility Model Content

[0004] This utility model addresses the aforementioned problems and aims to provide a tractor that can prevent the traction bolt from disengaging.

[0005] To achieve the above objectives, this utility model provides a tractor unit that prevents the towing bolt from disengaging, used for towing trailers, the tractor unit comprising:

[0006] A body structure, comprising a body and a drive wheel assembly located at the bottom of the body;

[0007] The towing mechanism includes a positioning frame, a towing bolt, and a limiting component. The positioning frame includes a support plate fixed to the rear of the vehicle body and a plurality of positioning plates spaced apart on the support plate along the height direction of the support plate. Two adjacent positioning plates enclose a fastening area, which is used to place the connecting part at the front end of the trailer. The towing bolt can be inserted between the plurality of positioning plates and can be inserted through the connecting part to lock the connecting part.

[0008] The limiting member is fixed to the uppermost positioning plate. When the traction bolt rises to the first preset height, the limiting member can abut against one side of the bottom end of the traction bolt to prevent the traction bolt from disengaging from the positioning frame.

[0009] According to the above-described tractor that can prevent the traction bolt from disengaging, the limiting component includes a limiting seat and a limiting bolt. The limiting seat is fixed to the top of the uppermost positioning plate, and the limiting bolt is threadedly engaged with the limiting seat and can pass through the limiting seat and be located inside the limiting seat.

[0010] The traction bolt passes through the limiting seat, and a limiting groove is provided on one side of the traction bolt. One end of the limiting bolt can pass through the limiting seat and be located in the limiting groove.

[0011] According to the above-described tractor that can prevent the traction bolt from disengaging, the upper and lower ends of the limiting groove are respectively provided with an upper stop surface and a lower stop surface;

[0012] When the traction bolt rises to the first preset height, one end of the limiting bolt can abut against the lower stop surface to restrict the traction bolt from continuing to rise;

[0013] When the traction bolt descends to the second preset height, one end of the limiting bolt can abut against the upper stop surface to restrict the traction bolt from continuing to descend.

[0014] According to the above-described tractor that can prevent the traction bolt from disengaging, one side of the limiting seat is provided with a threaded hole that penetrates the limiting seat, and the threaded hole corresponds to the limiting groove.

[0015] According to the above-described tractor that can prevent the traction bolt from disengaging, the threaded hole is provided with a stepped surface. When the nut of the limiting bolt abuts against the stepped surface, the end of the limiting bolt away from the nut extends into the limiting groove.

[0016] According to the above-described tractor that can prevent the traction bolt from disengaging, each of the multiple positioning plates is provided with a first positioning hole, and the multiple first positioning holes are interconnected. The connecting part is provided with a second positioning hole, and when the connecting part is placed in the bolting area, the second positioning hole is connected to the multiple first positioning holes.

[0017] According to the above-described tractor vehicle for preventing the towing bolt from disengaging, the positioning plates are provided in three places. The three positioning plates are arranged vertically at intervals on the support plate and together form two bolting areas. The two bolting areas are arranged vertically at the rear of the vehicle body, and the towing bolt can be inserted between the three positioning plates.

[0018] According to the above-described tractor vehicle for preventing the traction bolt from disengaging, the traction mechanism further includes an operating handle, which is hinged to the vehicle body and connected to the top of the traction bolt via a connecting rod, and can drive the traction bolt upward by rotation.

[0019] According to the above-described tractor vehicle for preventing the traction bolt from disengaging, the lower end of the operating handle is rotatably connected to the vehicle body via a first rotating shaft, one end of the connecting rod is connected to one side of the first rotating shaft, and the other end of the connecting rod is connected to the top of the traction bolt via a second rotating shaft.

[0020] According to the above-described tractor unit for preventing the towing bolt from disengaging, the vehicle body mechanism further includes a driver's seat located on the vehicle body, and the operating handle is located on one side of the driver's seat.

[0021] This utility model has the following beneficial effects:

[0022] 1. A limiting device is provided on the top positioning plate. The limiting device can prevent the traction bolt from completely disengaging from the positioning frame, so that the traction bolt does not need to be reinserted, making the traction operation simpler. It can also prevent the traction bolt from being damaged due to collision with other components.

[0023] 2. By placing the control handle on one side of the driver's seat, it is easier to operate the control handle;

[0024] 3. The positioning frame has multiple mounting areas arranged along the height direction, which can be used for trailers of different heights and has good applicability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the tractor unit in the embodiment;

[0026] Figure 2 This is a schematic diagram of the traction mechanism structure in an embodiment;

[0027] Figure 3 This is a schematic diagram of the traction bolt structure in an embodiment;

[0028] Figure 4 This is a schematic diagram of the limiting seat structure in an embodiment.

[0029] In the picture:

[0030] 100. Body structure; 110. Body; 120. Drive wheel assembly; 130. Driver's seat;

[0031] 200. Traction mechanism; 210. Positioning frame; 211. Support plate; 212. Positioning plate; 213. Hook area; 220. Traction bolt; 221. Limiting groove; 221a. Upper stop surface; 221b. Lower stop surface; 230. Limiting component; 231. Limiting seat; 231a. Threaded hole; 231b. Stepped surface; 232. Limiting bolt; 240. Operating handle; 250. Connecting rod. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] like Figure 1-4As shown, a tractor unit that prevents the tow hook from disengaging includes a body structure 100 and a towing mechanism 200, and is used to tow a trailer.

[0034] Specifically, the body structure 100 includes a body 110, a drive wheel assembly 120 located at the bottom of the body 110, and a driver's seat 130 located on the body 110. The drive wheel assembly 120 can provide power to the body 110 to drive the body 110 and other components located on the body 110 to move. The driver's seat 130 integrates multiple components such as a seat, instrument panel, emergency stop switch, and steering wheel, and is mainly used to control the body 110 so that it can perform corresponding actions according to preset instructions.

[0035] Of course, in this embodiment, the vehicle body 110 adopts a closed shape design with relatively smooth edges and corners. The rear wheels of the drive wheel set 120 are equipped with electromagnetic brakes, and the front wheels are independently suspended to ensure that there is no risk of rolling when parking on a slope.

[0036] Specifically, the towing mechanism 200 includes a positioning frame 210, a towing bolt 220, and a limiting member 230. The positioning frame 210 includes a support plate 211 fixed to the rear of the vehicle body 110 and multiple positioning plates 212 spaced apart along the height direction of the support plate 211. Two adjacent positioning plates 212 enclose a fastening area 213, which is used to place the connecting part of the trailer's front end. Before the towing bolt 220 is inserted, the connecting part of the trailer's front end can be placed into the fastening area 213, and then the towing bolt 220 is inserted into the fastening area 213. That is, the towing bolt 220 can be inserted between the multiple positioning plates 212 and can pass through the connecting part to lock the connecting part, thereby connecting the towed trailer to the tractor. This design facilitates the movement of the trailer being towed by the tractor. The limiting member 230 is fixed to the uppermost positioning plate 212 among multiple positioning plates 212. When it is necessary to disconnect the tractor and the trailer, the towing bolt 220 needs to be driven to rise and retract from the bolting area 213. At this time, the lock on the connection part at the front of the trailer is released. When the towing bolt 220 rises to the first preset height, the limiting member 230 can abut against the bottom side of the towing bolt 220. After abutting, the towing bolt 220 cannot rise further, thus preventing the towing bolt 220 from completely disengaging from the positioning frame 210. Furthermore, the towing bolt 220 does not need to be re-inserted into the positioning frame 210 when it is reused, making the operation more convenient and preventing damage caused by the towing bolt 220 disengaging.

[0037] Furthermore, the limiting component 230 includes a limiting seat 231 and a limiting bolt 232. The limiting seat 231 is fixed to the top of the uppermost positioning plate 212. The limiting bolt 232 is threadedly engaged with the limiting seat 231 and can pass through the limiting seat 231 to be located inside the limiting seat 231. Before the traction bolt 220 is installed, the limiting bolt 232 is retracted into the limiting seat 231, and the traction bolt 220 can be inserted from the top of the limiting seat 231. A limiting groove 221 is provided on one side of the traction bolt 220. After the traction bolt 220 is inserted into the limiting seat 231, the limiting bolt 232 can be rotated again so that one end passes through the limiting seat 231 and is located in the limiting groove 221. When the traction bolt 220 moves up and down, it is limited by the cooperation between the limiting bolt 232 and the limiting groove 221.

[0038] Furthermore, an upper stop surface 221a and a lower stop surface 221b are respectively provided at the upper and lower ends of the limiting groove 221. When the traction bolt 220 rises to the first preset height, one end of the limiting bolt 232 can abut against the lower stop surface 221b to restrict the traction bolt 220 from continuing to rise. When the traction bolt 220 falls to the second preset height, one end of the limiting bolt 232 can abut against the upper stop surface 221a to restrict the traction bolt 220 from continuing to fall. That is, the highest and lowest positions of the traction bolt 220 are restricted by the cooperation of the limiting groove 221 and the limiting bolt 232, and its range of motion is within the length range of the limiting groove 221.

[0039] When the traction bolt 220 is at the first preset height, the bottom end of the traction bolt 220 is located in the uppermost positioning plate 212 to detach from the anchoring area 213. When the traction bolt 220 is at the second preset height, the bottom end of the traction bolt 220 is located in the lowermost positioning plate 212 to penetrate all the anchoring areas 213.

[0040] Furthermore, a threaded hole 231a is provided on one side of the limiting seat 231, which passes through the limiting seat 231. The threaded hole 231a corresponds to the limiting groove 221, which facilitates the limiting bolt 232 to be inserted into the limiting groove 221.

[0041] Furthermore, to prevent excessive movement of the limiting bolt 232, a stepped surface 231b is provided in the threaded hole 231a. When the nut of the limiting bolt 232 abuts against the stepped surface 231b, the end of the limiting bolt 232 away from the nut extends into the limiting groove 221. At this time, the limiting bolt 232 cannot go any further in, which can prevent the end of the limiting bolt 232 from abutting against the bottom of the limiting groove 221 and avoid affecting the upward and downward movement of the traction bolt 220.

[0042] Furthermore, each of the multiple positioning plates 212 is provided with a first positioning hole, and the multiple first positioning holes are connected. The connecting part is provided with a second positioning hole. When the connecting part is placed in the hanging area 213, the second positioning hole is connected with the multiple first positioning holes. The traction bolt 220 can pass through the connecting hole between the second positioning hole and the first positioning hole, thereby realizing the connection and fixation of the connecting part.

[0043] In this embodiment, there are three positioning plates 212. The three positioning plates 212 are arranged vertically at intervals on the support plate 211 and together form two fastening areas 213. The two fastening areas 213 are arranged vertically at the rear of the vehicle body 110. The towing bolt 220 can be inserted between the three positioning plates 212. Since the three positioning plates 212 are arranged vertically, the two fastening areas 213 formed by them are at different heights, which can be applied to trailers of different heights.

[0044] In this embodiment, both the positioning plate 212 and the support plate 211 are made of high-strength forged steel, which can effectively improve their strength and prevent breakage.

[0045] Furthermore, in order to control the lifting of the traction bolt 220, the traction mechanism 200 also includes an operating handle 240, which is hinged to the vehicle body 110 and connected to the top of the traction bolt 220 via a connecting rod 250. The operating handle 240 can drive the traction bolt 220 to rise by rotating it. The counterclockwise rotation of the operating handle 240 can drive the connecting rod 250 to rise, thereby driving the traction bolt 220 to rise.

[0046] In this embodiment, the operating handle 240 is located on one side of the driver's seat 130, which allows the driver to operate it conveniently. The driver can control the lifting of the towing bolt 220 without getting out of the vehicle, thus improving the ease of operation.

[0047] Furthermore, the lower end of the operating handle 240 is rotatably connected to the vehicle body 110 via a first rotating shaft. One end of the connecting rod 250 is connected to one side of the first rotating shaft, and the other end of the connecting rod 250 is connected to the top of the traction bolt 220 via a second rotating shaft. Rotating the operating handle 240 can drive the first rotating shaft to rotate, and rotating the first rotating shaft can drive the connecting rod 250 to rise or fall. The connecting rod 250 drives the traction bolt 220 to rise or fall via the second rotating shaft.

[0048] In this embodiment, a tractor unit that prevents the tow bolt 220 from disengaging is disclosed, including a body structure 100 and a towing mechanism 200. The body structure 100 includes a body 110, and the forward movement mechanism includes a positioning frame 210, a tow bolt 220, and a limiting member 230. The positioning frame 210 includes a support plate 211 fixed to the rear of the body 110 and a plurality of positioning plates 212 spaced apart on the support plate 211 along the height direction of the support plate 211. Two adjacent positioning plates 212 enclose a hook-up area 213, which is used to place the connecting part at the front end of the trailer. The traction bolt 220 can be inserted between multiple positioning plates 212 and can be inserted through the connecting part to lock the connecting part. The limiting member 230 is fixed on the uppermost positioning plate 212. When the traction bolt 220 rises to the first preset height, the limiting member 230 can abut against one side of the bottom end of the traction bolt 220 to prevent the traction bolt 220 from disengaging from the positioning frame 210. The limiting member 230 can prevent the traction bolt 220 from completely disengaging from the positioning frame 210, so that the traction bolt 220 does not need to be reinserted, making the traction operation simpler. It can also prevent the traction bolt 220 from being damaged due to collision with other components.

[0049] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0050] 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.

[0051] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" 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.

[0052] 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.

[0053] 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.

Claims

1. A towing vehicle capable of preventing uncoupling of a towing hitch for towing a trailer, characterized in that, The tractor unit includes: A body structure, comprising a body and a drive wheel assembly located at the bottom of the body; The towing mechanism includes a positioning frame, a towing bolt, and a limiting component. The positioning frame includes a support plate fixed to the rear of the vehicle body and a plurality of positioning plates spaced apart on the support plate along the height direction of the support plate. Two adjacent positioning plates enclose a fastening area, which is used to place the connecting part at the front end of the trailer. The towing bolt can be inserted between the plurality of positioning plates and can be inserted through the connecting part to lock the connecting part. The limiting member is fixed to the uppermost positioning plate. When the traction bolt rises to the first preset height, the limiting member can abut against one side of the bottom end of the traction bolt to prevent the traction bolt from disengaging from the positioning frame.

2. The towing vehicle according to claim 1, wherein The limiting component includes a limiting seat and a limiting bolt. The limiting seat is fixed to the top of the uppermost positioning plate. The limiting bolt is threadedly engaged with the limiting seat and can pass through the limiting seat to be located inside the limiting seat. The traction bolt passes through the limiting seat, and a limiting groove is provided on one side of the traction bolt. One end of the limiting bolt can pass through the limiting seat and be located in the limiting groove.

3. A tractor unit capable of preventing the traction bolt from disengaging according to claim 2, characterized in that, The limiting groove is provided with an upper stop surface and a lower stop surface at its upper and lower ends, respectively. When the traction bolt rises to the first preset height, one end of the limiting bolt can abut against the lower stop surface to restrict the traction bolt from continuing to rise; When the traction bolt descends to the second preset height, one end of the limiting bolt can abut against the upper stop surface to restrict the traction bolt from continuing to descend.

4. A tractor unit capable of preventing the traction bolt from disengaging according to claim 2, characterized in that, The limiting seat has a threaded hole through it on one side, and the threaded hole corresponds to the limiting groove.

5. A tractor unit capable of preventing the traction bolt from disengaging according to claim 4, characterized in that, The threaded hole has a stepped surface. When the nut of the limiting bolt abuts against the stepped surface, the end of the limiting bolt away from the nut extends into the limiting groove.

6. A tractor unit capable of preventing the traction bolt from disengaging according to claim 1, characterized in that, Each of the multiple positioning plates is provided with a first positioning hole, and the multiple first positioning holes are connected. The connecting part is provided with a second positioning hole. When the connecting part is placed in the hanging area, the second positioning hole is connected with the multiple first positioning holes.

7. A tractor unit capable of preventing the traction bolt from disengaging according to claim 6, characterized in that, The positioning plates are provided in three places, which are arranged vertically at intervals on the support plate and together form two bolting areas. The two bolting areas are arranged vertically at the rear of the vehicle body, and the towing bolt can be inserted between the three positioning plates.

8. A tractor unit capable of preventing the traction bolt from disengaging according to claim 1, characterized in that, The traction mechanism also includes an operating handle, which is hinged to the vehicle body and connected to the top of the traction bolt via a connecting rod, and can be rotated to drive the traction bolt to rise.

9. A tractor unit capable of preventing the traction bolt from disengaging according to claim 8, characterized in that, The lower end of the operating handle is rotatably connected to the vehicle body via a first rotating shaft, one end of the connecting rod is connected to one side of the first rotating shaft, and the other end of the connecting rod is connected to the top of the traction bolt via a second rotating shaft.

10. A tractor unit capable of preventing the traction bolt from disengaging according to claim 8, characterized in that, The body structure also includes a driver's seat located on the body, and the operating handle is located on one side of the driver's seat.

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