Trailer structure and vehicle

Abstract

The utility model provides a trailer structure and a vehicle, which belongs to the technical field of vehicles and comprises a sleeve, a connecting column, a connecting component, a dragging component and a locking mechanism. The sleeve is used for being installed on a frame rear cross beam. One end of the front side of the connecting column is arranged in the sleeve in a penetrating mode, and a connecting assembly is arranged at one end of the rear side of the connecting column and detachably connected with a dragging assembly; the locking mechanism comprises a plurality of locking plates and a plurality of locking blocks, the locking plates are arranged at the end, close to the front side, of the inner wall of the sleeve in the circumferential direction, locking gaps are formed in the front sides of the locking plates, avoiding gaps are formed between the adjacent locking plates, and the locking plates are arranged at the end, close to the front side, of the outer wall of the connecting column in the circumferential direction. According to the trailer structure provided by the utility model, the dragging force can be distributed to a locking structure formed by matching the plurality of locking blocks and the plurality of locking plates, the stability of the trailer structure is better, and meanwhile, the sleeve and the connecting column are also very convenient to disassemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and more specifically, relates to a trailer structure and a vehicle. Background Art

[0002] With the development of human society and the continuous progress of science and technology, the popularity of automobiles is getting higher and higher. However, the situation of breakdowns is also endless. In order to facilitate towing, a trailer structure is specially provided on the vehicle.

[0003] For the existing trailer structure, generally, a trailer bar is added on the rear cross beam of the vehicle frame or at the end of the vehicle frame, and then the sleeve is fixed on the rear cross beam or the trailer bar. The connecting column for connecting the towing member passes through the sleeve, and is fixed by a connecting pin passing through the sleeve and the connecting column. When towing with the above trailer structure, the towing force acts entirely on the connecting pin, which easily causes the connecting pin to bend and deform, resulting in difficulty in disassembling the sleeve and the connecting column. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a trailer structure, aiming to solve the problem that the towing force acts entirely on the connecting pin, which easily causes the connecting pin to bend and deform, resulting in difficulty in disassembling the sleeve and the connecting column.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: providing a trailer structure, including:

[0006] A sleeve, which is used to be installed on the rear cross beam of the vehicle frame;

[0007] A connecting column, one end of the front side of the connecting column passes through the sleeve, a connecting component is arranged at one end of the rear side of the connecting column, and the connecting component is detachably connected with a towing component;

[0008] A locking mechanism, the locking mechanism includes a plurality of locking plates and a plurality of locking blocks. The plurality of locking plates are arranged at one end near the front side of the inner wall circumference of the sleeve. A locking gap is formed on the front side of the locking plate, and an avoidance gap is formed between adjacent locking plates. The locking blocks are arranged at one end of the outer wall circumference of the front side of the connecting column. After the locking blocks pass through the avoidance gap, they are rotationally clamped in the locking gap through the connecting column to limit the axial separation of the connecting column from the sleeve.

[0009] In a possible implementation manner, a positioning plate is arranged at one end of the locking plate, and the positioning plate extends towards the side of the locking gap. The positioning plate is used to position the angle of the locking block rotating into the locking gap, so as to prevent the locking block from rotating out of the locking gap and no longer being able to perform corresponding locking.

[0010] In a possible implementation, the connecting column includes a first column and a second column coaxially connected in sequence from front to back, a plurality of locking blocks are circumferentially arranged at the front end of the first column, the connecting assembly is arranged at the rear end of the second column, and the first column passes through the middle of the plurality of locking plates and drives the plurality of locking blocks to rotate and be locked in the locking gap.

[0011] In one possible implementation, a first through hole is coaxially opened on opposite sides of the side wall of the sleeve, and a second through hole is radially opened on the connecting column. When the locking block is clamped in the locking gap, the first through hole and the second through hole are coaxially arranged and penetrated by a positioning pin to prevent the locking block from being separated from the locking gap corresponding to the locking plate due to rotation of the connecting column.

[0012] In a possible implementation, the front end of the sleeve is connected to a mounting plate, the locking gap is formed between the mounting plate and the locking plate, the mounting plate is used to be installed on the rear cross beam of the frame, and the mounting plate has a positioning function while taking into account the installation function.

[0013] In a possible implementation, the connection component includes:

[0014] Two fixing plates, the two fixing plates are fixed side by side and spaced apart at the rear end of the connecting column;

[0015] A connecting bolt vertically penetrates the two fixing plates, and the towing component is detachably connected to the connecting bolt. By removing the connecting bolt, the towing component can be quickly disassembled and replaced.

[0016] In a possible implementation, the drag component includes:

[0017] A first connecting plate, wherein a first connecting hole is formed on the first connecting plate, the first connecting plate is located between the two fixing plates, and the connecting bolt passes through the first connecting hole;

[0018] The traction ring is fixed to the rear end of the first connecting plate, and the first connecting plate can rotate axially relative to the connecting bolt, thereby completing the hinged installation of the traction ring on the connecting assembly, making it convenient for the towing hook to be hung in the traction ring from different angles.

[0019] In a possible implementation, the drag component includes:

[0020] A second connecting plate, wherein a second connecting hole is formed on the second connecting plate, the second connecting plate is located between the two fixing plates, and the connecting bolt passes through the second connecting hole;

[0021] an extension plate, the extension plate being fixed to the rear end of the second connecting plate and extending backward;

[0022] The towing post is arranged at the rear end of the extension plate. The second connecting plate can rotate axially relative to the connecting bolt, so as to complete the hinged installation of the extension plate and the towing post on the connecting component, facilitating the towing rope to be sleeved on the towing post from different angles.

[0023] In a possible implementation manner, the towing post is vertically arranged at the rear end of the extension plate, and an anti-disengagement ball is arranged at the top of the towing post, which can prevent the towing rope from disengaging from the towing post.

[0024] The beneficial effect of a trailer structure provided by the present utility model is as follows: Compared with the prior art, the connecting column is inserted into the inside of the sleeve from back to front, the front end of the connecting column together with a plurality of locking blocks is inserted into the inner cavity of the sleeve, and each locking block reaches the front end of the inner cavity of the sleeve after passing through the avoidance gap between adjacent locking plates. Rotate the connecting column, and the connecting column drives the plurality of locking blocks to rotate into the locking gap in front of the plurality of locking plates, so as to complete the installation of the connecting column in the sleeve. The rear end of the connecting column is connected to the towing component through the connecting component, and the towing component is connected to the towing hook or the towing rope to realize the towing of the vehicle. When using a trailer structure provided by the present utility model, the towing hook or the towing rope conducts the pulling force to the locking mechanism through the towing component and the connecting component, and the plurality of locking plates of the locking mechanism simultaneously lock and limit the plurality of locking blocks, preventing the connecting column from moving axially backward along the sleeve. When it is necessary to disassemble the connecting column and the sleeve, rotate the connecting column until the plurality of locking blocks all correspond to the position of the avoidance gap, and then pull the connecting column backward to disengage it from the sleeve. For a trailer structure provided by the present utility model, the towing force is distributed to the locking structure formed by the cooperation of the plurality of locking blocks and the plurality of locking plates, and its stability is better. At the same time, the disassembly of the sleeve and the connecting column is also very convenient.

[0025] The present utility model also provides a vehicle, including the trailer structure described above.

[0026] The beneficial effect of a vehicle provided by the present utility model is as follows: Compared with the prior art, since the vehicle uses the above-mentioned trailer structure, it has the same beneficial effects as the above-mentioned trailer structure, which will not be elaborated here. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a three-dimensional view of a trailer structure provided by the first embodiment of the present utility model;

[0029] Figure 2 Top view of a trailer structure provided for the first embodiment of the present utility model;

[0030] Figure 3 For Figure 2 Cross-sectional view along line A-A in

[0031] Figure 4 Stereogram of a trailer structure provided for the second embodiment of the present utility model;

[0032] Figure 5 Stereogram of a sleeve and a mounting plate provided by the present utility model;

[0033] Figure 6 Side view of a sleeve and a mounting plate provided by the present utility model;

[0034] Figure 7 Stereogram of a connecting column and a connecting component provided by the present utility model;

[0035] Figure 8 Stereogram of a dragging component provided for the first embodiment of the present utility model;

[0036] Figure 9 Stereogram of a dragging component provided for the second embodiment of the present utility model.

[0037] In the figure:

[0038] 100, sleeve; 110, mounting plate; 120, first through hole;

[0039] 200, connecting column; 210, first column body; 220, second column body; 221, second through hole; 230, positioning pin;

[0040] 300, connecting component; 310, fixing plate; 320, connecting bolt;

[0041] 400, dragging component; 410, first connecting plate; 411, first connecting hole; 420, towing ring; 430, second connecting plate; 431, second connecting hole; 440, extension plate; 450, towing column; 451, anti-disengagement ball;

[0042] 500, locking mechanism; 510, locking plate; 511, locking gap; 512, avoidance gap; 513, positioning plate; 520, locking block. Detailed implementation manners

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0044] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are for distinguishing different objects and not for describing a specific order.

[0045] In the claims, the description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", "high", "low", etc. to indicate the orientation or position relationship are based on the orientation and position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the specific protection scope of the present utility model.

[0046] Please refer to Figures 1 to 6 , and now a trailer structure provided by the present utility model will be described. A trailer structure includes a sleeve 100, a connecting column 200, a connecting assembly 300, a towing assembly 400 and a locking mechanism 500.

[0047] The sleeve 100 is used for being installed on the rear cross beam of the vehicle frame; one end of the front side of the connecting column 200 is inserted into the sleeve 100, and a connecting assembly 300 is arranged at the other end of the rear side of the connecting column 200. The connecting assembly 300 is detachably connected with a towing assembly 400; the locking mechanism 500 includes a plurality of locking plates 510 and a plurality of locking blocks 520. The plurality of locking plates 510 are arranged at one end near the front side of the inner wall circumference of the sleeve 100. A locking gap 511 is formed on the front side of the locking plate 510, and an avoidance gap 512 is formed between adjacent locking plates 510. The locking blocks 520 are arranged at one end of the outer wall circumference of the front side of the connecting column 200. After the locking blocks 520 pass through the avoidance gap 512, they are rotationally clamped in the locking gap 511 through the connecting column 200 to limit the axial separation of the connecting column 200 from the sleeve 100.

[0048] A trailer structure provided by the present utility model, compared with the prior art, the connecting column 200 is inserted into the interior of the sleeve 100 from back to front. The front end of the connecting column 200 together with a plurality of locking blocks 520 is inserted into the inner cavity of the sleeve 100. Each locking block 520 reaches the front end of the inner cavity of the sleeve 100 after passing through the avoidance gap 512 between adjacent locking plates 510. By rotating the connecting column 200, the connecting column 200 drives the plurality of locking blocks 520 to rotate into the locking gap 511 in front of the plurality of locking plates 510, thereby completing the installation of the connecting column 200 in the sleeve 100. The rear end of the connecting column 200 is connected to the towing assembly 400 through the connecting assembly 300, and the towing assembly 400 is connected to a tow hook or a tow rope to realize the towing of a vehicle. When using the trailer structure provided by the present utility model, the tow hook or the tow rope transmits the pulling force to the locking mechanism 500 through the towing assembly 400 and the connecting assembly 300. A plurality of locking plates 510 of the locking mechanism 500 simultaneously lock and limit a plurality of locking blocks 520, preventing the connecting column 200 from moving axially backward along the sleeve 100. When it is necessary to disassemble the connecting column 200 and the sleeve 100, rotate the connecting column 200 until the plurality of locking blocks 520 are all corresponding to the position of the avoidance gap 512, and then pull the connecting column 200 backward to disengage it from the sleeve 100. For the trailer structure provided by the present utility model, the towing force is distributed to the locking structure formed by the cooperation of a plurality of locking blocks 520 and a plurality of locking plates 510, and its stability is better. At the same time, the disassembly of the sleeve 100 and the connecting column 200 is also very convenient.

[0049] It should be noted that: a plurality of locking plates 510 are integrally formed at the front end of the inner cavity of the sleeve 100. The inner side walls of the plurality of locking plates 510 are arranged conformally with the inner side wall of the sleeve 100, so that the inner side walls of the plurality of locking plates 510 together form a first circular surface. A plurality of locking blocks 520 are integrally formed on the circumferential direction of the front end of the connecting column 200. The outer side walls of the plurality of locking blocks 520 are arranged conformally with the outer side wall of the connecting column 200, so that the outer side walls of the plurality of locking blocks 520 together form a second circular surface. Among them, the outer diameter of the second circular surface is smaller than the inner diameter of the sleeve 100, and the outer diameter of the second circular surface is larger than the outer diameter of the first circular surface. Therefore, the connecting column 200 can be inserted into the sleeve 100 together with the plurality of locking blocks 520 and be clamped in the locking gap 511 corresponding to the plurality of locking plates 510.

[0050] Please refer to Figure 5A positioning plate 513 is provided at one end of the locking plate 510, and the positioning plate 513 is integrally formed with the locking plate 510. The positioning plate 513 extends in the direction of the locking gap 511 and blocks one side of the locking gap 511. The positioning plate 513 forms a positioning surface toward the side of the locking gap 511. The locking block 520 rotates from the side of the locking gap 511 away from the positioning plate 513 to the inside thereof, and the locking block 520 continues to rotate until the locking block 520 abuts against the positioning surface of the positioning plate 513. The positioning surface of the positioning plate 513 can position the locking block 520 in the locking gap 511, thereby preventing the locking block 520 from rotating out of the locking gap 511 and no longer being able to perform corresponding locking.

[0051] See also Figure 7 The connecting column 200 includes a first column 210 and a second column 220 which are coaxially connected from front to back, and the first column 210 and the second column 220 are integrally formed. The outer diameter of the first column 210 is smaller than the outer diameter of the second column 220, and the outer diameter of the second circular surface formed by the outer side walls of the plurality of locking blocks 520 is the same as the outer diameter of the second column 220.

[0052] Specifically, multiple locking blocks 520 are circumferentially arranged at the front end of the first column 210, and the connecting assembly 300 is arranged at the rear end of the second column 220. The first column 210 passes through the first circular surface formed by the middle of the multiple locking plates 510, and at the same time, the multiple locking blocks 520 pass through the avoidance gap 512 between adjacent locking plates 510. After that, the first column 210 and the second column 220 rotate at the same time, and the first column 210 drives the multiple locking blocks 520 to rotate and be locked in the locking gap 511. At this time, the multiple locking plates 510 lock and limit the multiple locking blocks 520 one by one.

[0053] See also Figure 1 , Figure 4 , Figure 5 as well as Figure 7 A first through hole 120 is coaxially opened on the opposite side of the side wall of the sleeve 100, and a second through hole 221 is radially opened on the connecting column 200. The locking block 520 is stuck in the locking gap 511. That is, when the locking block 520 contacts the positioning surface of the positioning plate 513, the first through hole 120 and the second through hole 221 just reach a coaxial state. At this time, the positioning pin 230 is used to sequentially penetrate the two first through holes 120 and one second through hole 221, thereby limiting the rotation of the connecting column 200 relative to the sleeve 100, and preventing the connecting column 200 from rotating and causing the locking block 520 to disengage from the locking gap 511 corresponding to the locking plate 510.

[0054] See also Figure 5 and Figure 6, a mounting plate 110 is connected to the front end of the sleeve 100. The mounting plate 110 is integrally formed at the front end of the sleeve 100. The mounting plate 110 is a rectangular plate, and connection holes are respectively formed at its four corners. Bolts are used to penetrate the corresponding connection holes, so as to fix the mounting plate 110 on the rear cross beam of the vehicle frame. A locking gap 511 is formed between the mounting plate 110 and the locking plate 510. As the connecting column 200 is inserted into the sleeve 100, the front end of the connecting column 200 touches the rear end face of the mounting plate 110, so as to reach a predetermined position. At this time, when the connecting column 200 is rotated, it can ensure that a plurality of locking blocks 520 can smoothly rotate into the locking gap 511 of the locking plate 510. The mounting plate 110 not only has the function of installation but also has the function of positioning.

[0055] Please refer to Figure 7 , the connecting assembly 300 includes two fixing plates 310 and a connecting bolt 320. The two fixing plates 310 are fixed side by side and at intervals at the rear end of the connecting column 200. The two fixing plates 310 are integrally formed with the connecting column 200, and there is a connecting gap between the two fixing plates 310. The outer sides of the two fixing plates 310 are both planed, so as to form mounting recesses on the outer sides of the two fixing plates 310. The connecting bolt 320 vertically penetrates the two fixing plates 310, and the nut end at one end and the nut end at the other end of the connecting bolt 320 are respectively located in the two mounting recesses, so as to avoid too much protrusion outside the connecting column 200 and occupying space. Among them, the dragging assembly 400 is connected to the part of the connecting bolt 320 located in the connecting gap. By disassembling the connecting bolt 320, the quick disassembly, installation and replacement of the dragging assembly 400 can be realized.

[0056] Please refer to Figure 1 and Figure 8 , in the first embodiment, the dragging assembly 400 includes a first connecting plate 410 and a towing ring 420. A first connecting hole 411 is formed on the first connecting plate 410. The first connecting plate 410 is located between the two fixing plates 310, and the connecting bolt 320 penetrates the first connecting hole 411; the towing ring 420 is fixed to the rear end of the first connecting plate 410. Among them, the first connecting plate 410 and the towing ring 420 are integrally formed. When installing the above-mentioned dragging assembly 400, first insert the first connecting plate 410 into the connecting gap between the two fixing plates 310, and the connecting bolt 320 sequentially penetrates the two fixing plates 310 and the first connecting hole 411 of the first connecting plate 410. At this time, the first connecting plate 410 can also rotate axially relative to the connecting bolt 320, so as to complete the hinged installation of the towing ring 420 on the connecting assembly 300, which is convenient for the tow hook to be hung in the towing ring 420 from different angles.

[0057] Please refer to Figure 4 and Figure 9, in the second embodiment, the dragging component 400 includes a second connecting plate 430, an extension plate 440 and a towing column 450. A second connecting hole 431 is formed in the second connecting plate 430. The second connecting plate 430 is located between the two fixing plates 310. The connecting bolt 320 passes through the second connecting hole 431. The extension plate 440 is fixed to the rear end of the second connecting plate 430 and extends backward. The towing column 450 is arranged at the rear end of the extension plate 440. Among them, the second connecting plate 430 and the extension plate 440 are integrally formed. When installing the above-mentioned dragging component 400, first insert the second connecting plate 430 into the connecting gap between the two fixing plates 310, and the connecting bolt 320 sequentially passes through the second connecting holes 431 of the two fixing plates 310 and the second connecting plate 430. At this time, the second connecting plate 430 can also rotate axially relative to the connecting bolt 320, so as to complete the hinged installation of the extension plate 440 and the towing column 450 on the connecting component 300, which is convenient for the towing rope to be sleeved on the towing column 450 from different angles.

[0058] Please refer to Figure 9 , specifically, a through hole is longitudinally formed at the rear end of the extension plate 440, and the towing column 450 vertically penetrates the above-mentioned through hole. The anti-disengagement ball 451 is integrally formed at the top of the towing column 450 and the outer diameter of the anti-disengagement ball 451 is larger than the outer diameter of the through hole. In order to facilitate positioning the depth of the towing column 450 inserted into the through hole, a stepped platform with an outer diameter larger than that of the towing column 450 can be provided on the towing column 450, and the stepped platform is clamped on the upper part of the through hole to position the anti-disengagement ball 451. There is a section of the towing column 450 between the anti-disengagement ball 451 and the extension plate 440, and the towing rope is sleeved on this section of the towing column 450. The anti-disengagement ball 451 can prevent the towing rope from detaching from the towing column 450.

[0059] Based on the same inventive concept, the present utility model also provides a vehicle that uses the above-mentioned trailer structure, so it has the same beneficial effects as the above-mentioned trailer structure, which will not be elaborated here.

[0060] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A trailer structure, characterized in that: include: A sleeve (100), wherein the sleeve (100) is used for being installed on a rear cross beam of a vehicle frame; A connecting column (200), wherein a front end of the connecting column (200) is inserted into the sleeve (100), and a connecting component (300) is provided at a rear end of the connecting column (200), and the connecting component (300) is detachably connected to a dragging component (400); A locking mechanism (500), the locking mechanism (500) comprising a plurality of locking plates (510) and a plurality of locking blocks (520), the plurality of locking plates (510) being arranged at one end of the inner wall circumferentially close to the front side of the sleeve (100), a locking gap (511) being formed on the front side of the locking plates (510), and an avoidance gap (512) being formed between adjacent locking plates (510), the locking block (520) being arranged at one end of the outer wall circumferentially of the connecting column (200), and after the locking block (520) passes through the avoidance gap (512), it is locked in the locking gap (511) by the rotation of the connecting column (200) to limit the axial separation of the connecting column (200) from the sleeve (100).

2. A trailer structure according to claim 1, characterized in that: A positioning plate (513) is provided at one end of the locking plate (510), and the positioning plate (513) extends toward one side of the locking gap (511). The positioning plate (513) is used to position the angle at which the locking block (520) is screwed into the locking gap (511).

3. A trailer structure according to claim 1, characterized in that: The connecting column (200) includes a first column (210) and a second column (220) which are coaxially connected in sequence from front to back, a plurality of locking blocks (520) are circumferentially arranged at the front end of the first column (210), and the connecting assembly (300) is arranged at the rear end of the second column (220). The first column (210) passes through the middle of the plurality of locking plates (510) and drives the plurality of locking blocks (520) to rotate and be locked in the locking gap (511).

4. A trailer structure according to claim 1, characterized in that: A first through hole (120) is coaxially opened on the opposite side of the side wall of the sleeve (100), and a second through hole (221) is radially opened on the connecting column (200). When the locking block (520) is locked in the locking gap (511), the first through hole (120) and the second through hole (221) are coaxially arranged and penetrated by a positioning pin (230).

5. A trailer structure according to claim 1, characterized in that: The front end of the sleeve (100) is connected to a mounting plate (110), the locking gap (511) is formed between the mounting plate (110) and the locking plate (510), and the mounting plate (110) is used to be mounted on a rear cross beam of a vehicle frame.

6. A trailer structure according to any one of claims 1 to 5, characterized in that: The connection assembly (300) comprises: Two fixing plates (310), the two fixing plates (310) being fixed side by side and spaced apart at the rear end of the connecting column (200); A connecting bolt (320), wherein the connecting bolt (320) vertically penetrates the two fixing plates (310), and the towing assembly (400) is detachably connected to the connecting bolt (320).

7. A trailer structure according to claim 6, characterized in that: The dragging component (400) comprises: A first connecting plate (410), wherein a first connecting hole (411) is formed on the first connecting plate (410), the first connecting plate (410) is located between the two fixing plates (310), and the connecting bolt (320) passes through the first connecting hole (411); A traction ring (420), wherein the traction ring (420) is fixed to the rear end of the first connecting plate (410).

8. A trailer structure according to claim 6, characterized in that: The dragging component (400) comprises: A second connecting plate (430), wherein a second connecting hole (431) is formed on the second connecting plate (430), the second connecting plate (430) is located between the two fixing plates (310), and the connecting bolt (320) passes through the second connecting hole (431); an extension plate (440), the extension plate (440) being fixed to the rear end of the second connecting plate (430) and extending backward; A traction column (450) is arranged at the rear end of the extension plate (440).

9. A trailer structure according to claim 8, characterized in that: The traction column (450) is vertically arranged at the rear end of the extension plate (440), and an anti-dropping ball (451) is arranged on the top of the traction column (450).

10. A vehicle, characterized in that: Comprising the trailer structure as described in any one of claims 1-9.

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