Flat car

Abstract

The utility model discloses a flat car. The flat car comprises a cargo carrying plate, and a sliding groove is formed in the cargo carrying plate in the front-back direction. The pull rod assembly comprises a pull rod body and a sliding structure, the pull rod body is rotationally connected with the sliding structure, the sliding structure is located in the sliding groove and can slide between a first position and a second position along the sliding groove, when the sliding structure is located in the first position, at least part of the pull rod body is located in the sliding groove, and when the sliding structure is located in the second position, at least part of the pull rod body is located. The pull rod body extends out of the front side of the cargo carrying plate, meanwhile, the pull rod body can swing between a third position and a fourth position relative to the sliding structure, when the pull rod body is located at the third position, the pull rod body extends in the front-back direction, and when the pull rod body is located at the fourth position, an included angle theta is formed between the pull rod body and the cargo carrying plate; the end, away from the sliding structure, of the pull rod body is located above the cargo carrying plate.

Description

Technical Field

[0001] The utility model relates to the technical field of freight flatbed trucks, in particular to a flatbed truck. Background Art

[0002] Flatbed trucks are generally used for transporting small items and have the advantages of being lightweight and convenient. Existing flatbed trucks generally have a loading board and a handle. The handle is installed on the loading board. For easy storage, the handle is generally arranged to be foldable with the loading board, so that the handle can be folded onto the upper side of the loading board for easy storage. However, this folding method still makes the flatbed truck occupy a large space after being stored, and cannot meet the increasing usage requirements of users.

[0003] Therefore, there is an urgent need for a flatbed truck to solve the above technical problems. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the problems existing in the related art to a certain extent. For this purpose, the utility model provides a flatbed truck, in which a pull rod assembly can be stored in a chute in the loading board, so that most of the pull rod assembly can be hidden in the loading board, which is convenient for stacking and storing the flatbed truck, occupies less space, has a more beautiful appearance, and has a simple structure.

[0005] The above object is achieved by the following technical solutions:

[0006] A flatbed truck, comprising:

[0007] A loading board, in which a chute is provided and opened in the front-rear direction;

[0008] A pull rod assembly, comprising a pull rod body and a sliding structure. The pull rod body is rotatably connected to the sliding structure. The sliding structure is located in the chute and can slide along the chute between a first position and a second position. When the sliding structure is in the first position, at least part of the pull rod body is located in the chute. When the sliding structure is in the second position, the pull rod body extends out of the front side of the loading board. At the same time, the pull rod body can swing between a third position and a fourth position relative to the sliding structure. When the pull rod body is in the third position, the pull rod body extends in the front-rear direction. When the pull rod body is in the fourth position, there is an included angle θ between the pull rod body and the loading board, and the end of the pull rod body far from the sliding structure is located above the loading board.

[0009] Optionally, the pull rod assembly further includes an adapter structure, and the pull rod body is rotatably connected to the sliding structure through the adapter structure.

[0010] Optionally, the sliding structure includes a slider and a first connecting portion, the first connecting portion is provided on the left and right sides of one end of the sliding structure close to the pull rod body, a mounting groove is formed between the two first connecting portions, and the transition structure includes:

[0011] A transfer block, wherein a second connecting portion is disposed at one end of the pull rod body close to the sliding structure, and the second connecting portion is disposed in the mounting groove and connected to the transfer block;

[0012] The rotating shaft penetrates the first connecting part and the adapter block simultaneously along the left-right direction, and the adapter block is rotatably connected to the first connecting part through the rotating shaft.

[0013] Optionally, a first limiting portion is provided on the side of the second connecting portion facing the adapter block, and the first limiting portion is provided at the upper end of the front portion of the second connecting portion. When the pull rod body is located at the third position, the adapter block is located at the lower side of the first limiting portion; when the pull rod body is located at the fourth position, the adapter block is located at the rear side of the first limiting portion.

[0014] Optionally, a guide slope inclined from bottom to top toward the adapter block is provided on the side of the first limiting portion facing the adapter block, and an arc surface is provided between the front side surface and the left side surface of the adapter block and / or between the front side surface and the left side surface of the adapter block.

[0015] Optionally, a circular arc groove concave toward the rear is provided on the rear side of the mounting groove, and the adapter structure also includes an circular arc protrusion provided on the adapter block, and the circular arc protrusion can extend into the circular arc groove and can rotate relative to the circular arc groove. When the pull rod body is located in the third position, the circular arc protrusion is completely fitted into the circular arc groove.

[0016] Optionally, a second limiting portion is further provided on the rear side of the mounting groove, the front side surface of the second limiting portion is provided in the vertical direction, and the second limiting portion is located at the lower side of the arc groove. The adapter structure also includes a third limiting portion provided on the adapter block. When the pull rod body is located at the third position, the third limiting portion is provided in the vertical direction at the lower side of the arc protrusion, and the rear side surface of the third limiting portion abuts against the front side surface of the third limiting portion.

[0017] Optionally, one of the limiting structure and the first limiting groove is provided on the sliding block, the other of the limiting structure and the first limiting groove is provided on the inner wall of the sliding groove, and the limiting structure extends into the first limiting groove and can move in the front-rear direction along the first limiting groove.

[0018] Optionally, the limiting structure includes a fourth limiting portion and a fifth limiting portion that are sequentially arranged at intervals in the front-rear direction. One of the second limiting groove and the first limiting protrusion is provided on the fourth limiting portion, and the other of the second limiting groove and the first limiting protrusion is provided on the front portion of the inner wall of the first limiting groove. When the sliding structure is in the second position, the first limiting protrusion is inserted into the second limiting groove. One of the third limiting groove and the second limiting protrusion is provided on the fifth limiting portion, and the other of the third limiting groove and the second limiting protrusion is provided on the rear portion of the inner wall of the first limiting groove. When the sliding structure is in the first position, the second limiting protrusion is inserted into the third limiting groove.

[0019] Optionally, the pull rod body is a telescopic rod.

[0020] Optionally, it further includes a wheel member. A wheel mounting portion is further provided on the bottom side of the cargo board. The wheel member includes a wheel assembly and a connecting member. A first mounting hole is provided on the connecting member, a second mounting hole is provided on the wheel mounting portion, and a third mounting hole is provided on the wheel assembly. The wheel assembly is mounted on the wheel mounting portion by screws sequentially passing through the third mounting hole, the first mounting hole, and the second mounting hole.

[0021] Optionally, the wheel assembly includes:

[0022] A universal wheel, including a universal wheel bracket and a universal wheel body mounted on the universal wheel bracket 322. The third mounting hole is provided on the universal wheel bracket;

[0023] A fixed wheel, including a fixed wheel bracket and a fixed wheel body mounted on the fixed wheel bracket. The third mounting hole is provided on the fixed wheel bracket. A fourth limiting groove is provided on the lower side of the connecting member connected to the fixed wheel bracket. The upper side of the fixed wheel bracket is inserted into the fourth limiting groove, and the fourth limiting groove can limit the relative position of the fixed wheel bracket and the connecting member in the horizontal direction.

[0024] Compared with the prior art, the present utility model at least includes the following beneficial effects:

[0025] The flatbed cart provided by the present utility model can pull the pull rod body out of the sliding groove in the cargo board and then swing upward relative to the sliding structure, so that an included angle θ is formed between the pull rod body and the cargo board, facilitating the user to push and pull the pull rod body, thereby pushing or pulling the flatbed cart. When the flatbed cart is in the storage state, the pull rod body can be swung relative to the sliding structure to the third position, and then the pull rod body is pushed into the sliding groove until the pull rod body is received into the sliding groove, thereby realizing the storage of the pull rod assembly in the cargo board. The pull rod assembly can be stored in the sliding groove in the cargo board, so that most of the pull rod assembly can be hidden in the cargo board, which is convenient for stacking and storing the flatbed cart, occupies less space, has a more beautiful appearance, a simple structure, and is convenient for storage and retrieval. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structure schematic diagram of the flatbed cart provided by a specific embodiment of the present utility model (the pull rod body is in the fourth position);

[0027] Figure 2 is Figure 1 an enlarged view of the J position in

[0028] Figure 3 is a top view of the flatbed cart provided by a specific embodiment of the present utility model (the pull rod body is in the third position);

[0029] Figure 4 is Figure 3 a cross-sectional view taken along the H-H line in

[0030] Figure 5 is Figure 4 an enlarged view of the I position in

[0031] Figure 6 is Figure 3 a cross-sectional view taken along the F-F line in

[0032] Figure 7 is Figure 6 an enlarged view of the G position in

[0033] Figure 8 is a three-dimensional structure schematic diagram of the flatbed cart at an angle provided by a specific embodiment of the present utility model (the pull rod body is in the first position);

[0034] Figure 9 is a three-dimensional structure schematic diagram of the flatbed cart at another angle provided by a specific embodiment of the present utility model (the pull rod body is in the first position);

[0035] Figure 10 is Figure 9 an enlarged view of the A position in

[0036] Figure 11 is Figure 8 an exploded view of

[0037] Figure 12 yes Figure 11 The enlarged view of point B in the middle;

[0038] Figure 13 yes Figure 11 Enlarged view of point C in the middle;

[0039] Figure 14 It is a bottom view of the flatbed truck provided by a specific embodiment of the utility model (the pull rod body is in the first position);

[0040] Figure 15 yes Figure 14 Sectional view at DD in the middle;

[0041] Figure 16 yes Figure 15 Enlarged view of point E in the middle.

[0042] In the figure:

[0043] 1. cargo board; 11. cargo board body; 12. slideway cover; 131. second limiting protrusion; 132. first limiting protrusion; 14. wheel mounting portion;

[0044] 2. Pull rod assembly; 21. Pull rod body; 22. Transfer structure; 221. Transfer block; 2211. Arc protrusion; 222. Arc surface; 223. Third limiting part; 224. Rotating shaft; 23. Sliding structure; 231. Sliding block; 232. Fifth limiting part; 233. Fourth limiting part; 234. First connecting part; 2341. First limiting part; 2342. Guide slope; 235. Second limiting part; 2301. Third limiting groove; 2302. Second limiting groove; 2303. Arc groove; 2304. Mounting groove; 24. Handle;

[0045] 100, slide groove; 101, first limiting groove;

[0046] 31. directional wheel; 311. directional wheel body; 312. directional wheel bracket; 32. universal wheel; 321. universal wheel body; 322. universal wheel bracket 322; 331. connecting piece; 3311. sixth limiting portion; 3301. fourth limiting groove; 330. first mounting hole. DETAILED DESCRIPTION

[0047] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0048] Please refer to Figures 1-16, the present utility model provides a flatbed cart, which includes a cargo board 1 and a pull rod assembly 2. A chute 100 is provided in the cargo board 1 and is opened in the front-rear direction. The pull rod assembly 2 includes a pull rod body 21 and a sliding structure 23. The pull rod body 21 is rotatably connected to the sliding structure 23. The sliding structure 23 is located in the chute 100 and can slide along the chute 100 between a first position and a second position. When the sliding structure 23 is in the first position, at least part of the pull rod body 21 is located in the chute 100. When the sliding structure 23 is in the second position, the pull rod body 21 extends out of the front side of the cargo board 1. At the same time, the pull rod body 21 can swing between a third position and a fourth position relative to the sliding structure 23. When the pull rod body 21 is in the third position, the pull rod body 21 extends in the front-rear direction. When the pull rod body 21 is in the fourth position, there is an included angle θ between the pull rod body 21 and the cargo board 1, and the end of the pull rod body 21 away from the sliding structure 23 is located above the cargo board 1.

[0049] The flatbed cart provided by the present utility model can pull out the pull rod body 21 from the chute 100 in the cargo board 1, and then swing it upward relative to the sliding structure 23 so that an included angle θ is formed between the pull rod body 21 and the cargo board 1, thereby facilitating the user to push and pull the pull rod body 21, and thus pushing or pulling the flatbed cart. When the flatbed cart is in the storage state, the pull rod body 21 can be swung relative to the sliding structure 23 to the third position, and then the pull rod body 21 is pushed into the chute 100 until the pull rod body 21 is received in the chute 100, thereby realizing the storage of the pull rod assembly 2 in the cargo board 1. The pull rod assembly 2 can be stored in the chute in the cargo board 1, so that most of the pull rod assembly 2 can be hidden in the cargo board 1, which is convenient for stacking and storing the flatbed cart, occupies less space, has a more beautiful appearance, and has a simple structure and is convenient for storage and retrieval.

[0050] Optionally, in this embodiment, the included angle θ is set to 90° to facilitate the user to push and pull the flatbed cart.

[0051] Optionally, the pull rod assembly 2 further includes an adapter structure 22, and the pull rod body 21 is rotatably connected to the sliding structure 23 through the adapter structure 22. This is to facilitate the rotational connection between the pull rod body 21 and the sliding structure 23.

[0052] Optionally, the sliding structure 23 includes a slider 231 and a first connecting portion 234. The left and right sides of the sliding structure 23 near the pull rod body 21 are both provided with a first connecting portion 234. A mounting groove 2304 is formed between the two first connecting portions 234. The transfer structure 22 includes a transfer block 221 and a rotating shaft 224. A second connecting portion is provided at one end of the pull rod body 21 near the sliding structure 23. The second connecting portion is arranged in the mounting groove 2304 and connected to the transfer block 221. The rotating shaft 224 penetrates the first connecting portion 234 and the transfer block 221 in the left-right direction at the same time. The transfer block 221 is rotatably connected to the first connecting portion 234 through the rotating shaft 224. Thus, the transfer block 221 is rotatably connected to the slider 231.

[0053] Optionally, a first limiting portion 2341 is provided on one side of the second connection portion facing the adapter block 221, and the first limiting portion 2341 is provided at the upper end of the front portion of the second connection portion. When the pull rod body 21 is located at the third position, the adapter block 221 is located at the lower side of the first limiting portion 2341; when the pull rod body 21 is located at the fourth position, the adapter block 221 is located at the rear side of the first limiting portion 2341. Specifically, by providing the first limiting portion 2341, it is limited that the pull rod body 21 will not swing upward when it is at the third position without external force, and it is limited that the pull rod body 21 will not swing downward when it is at the fourth position without external force. When the pull rod body 21 is in the third position, the user can push upward the end of the pull rod body 21 away from the slider 231 so that the adapter block 221 can swing over the first limit portion 2341 to the fourth position; when the pull rod body 21 is in the fourth position, the user can push downward the end of the pull rod body 21 away from the slider 231 so that the adapter block 221 can swing over the first limit portion 2341 to the third position.

[0054] Optionally, a guide slope 2342 inclined from bottom to top toward the adapter block 221 is provided on the side of the first limiting portion 2341 facing the adapter block 221, and an arc surface 222 is provided between the front side surface and the left side surface of the adapter block 221 and / or between the front side surface and the left side surface of the adapter block 221, so that the adapter block 221 can smoothly pass over the first limiting portion 2341.

[0055] Optionally, a circular arc groove 2303 recessed toward the rear is provided on the rear side of the mounting groove 2304, and the transfer structure 22 also includes a circular arc protrusion 2211 provided on the transfer block 221, and the circular arc protrusion 2211 can extend into the circular arc groove 2303 and can rotate relative to the circular arc groove 2303. When the pull rod body 21 is located at the third position, the circular arc protrusion 2211 is completely fitted with the circular arc groove 2303. By providing the circular arc protrusion 2211 and the circular arc groove 2303 that cooperate with each other, the transfer block 221 can rotate relative to the slider 231. When the pull rod body 21 is located at the third position, the circular arc protrusion 2211 is completely fitted with the circular arc groove 2303, so that the pull rod body 21 can be pushed backward together with the slider 231 and received into the slide groove 100.

[0056] Optionally, a second limiting portion 235 is further provided on the rear side of the mounting groove 2304, and the front side surface of the second limiting portion 235 is arranged in the vertical direction. The second limiting portion 235 is located at the lower side of the arc groove 2303, and the adapter structure 22 also includes a third limiting portion 223 arranged on the adapter block 221. When the pull rod body 21 is located at the third position, the third limiting portion 223 is arranged at the lower side of the arc protrusion 2211 in the vertical direction, and the rear side surface of the third limiting portion 223 abuts against the front side surface of the third limiting portion 223, thereby preventing the end of the pull rod body 21 away from the slider 231 from continuing to rotate downward.

[0057] Optionally, a limiting structure and one of the first limiting grooves 101 are provided on the slider 231, and the other of the limiting structure and the first limiting groove 101 is provided on the inner wall of the slide groove 100. The limiting structure extends into the first limiting groove 101 and can move in the front and rear directions along the first limiting groove 101, thereby limiting the sliding range of the slider 231 in the slide groove 100 and preventing the slider 231 from escaping from the slide groove 100.

[0058] Optionally, the limiting structure includes a fourth limiting portion 233 and a fifth limiting portion 232 that are sequentially arranged at intervals in the front-rear direction. One of the second limiting groove 2302 and the first limiting protrusion 132 is provided on the fourth limiting portion 233, and the other of the second limiting groove 2302 and the first limiting protrusion 132 is provided on the front portion of the inner wall of the first limiting groove 101. When the sliding structure 23 is in the second position, the first limiting protrusion 132 is inserted into the second limiting groove 2302, thereby realizing the positioning of the sliding structure 23 at the second position. When the user pushes the pull rod body 21 backward and drives the slider 231 to slide along the sliding groove 100, the first limiting protrusion 132 crosses the second limiting groove 2302. One of the third limiting groove 2301 and the second limiting protrusion 131 is provided on the fifth limiting portion 232, and the other of the third limiting groove 2301 and the second limiting protrusion 131 is provided on the rear portion of the inner wall of the first limiting groove 101. When the sliding structure 23 is in the first position, the second limiting protrusion 131 is inserted into the third limiting groove 2301, thereby realizing the positioning of the sliding structure 23 at the first position. When the user pulls the pull rod body 21 forward and drives the slider 231 to slide along the sliding groove 100, the second limiting protrusion 131 crosses the third limiting groove 2301.

[0059] Optionally, the pull rod body 21 is a telescopic rod to facilitate the user to adjust the length of the pull rod body 21.

[0060] Optionally, the pull rod assembly 2 further includes a handle 24, and the handle 24 is installed at one end of the pull rod body 21 away from the slider 231.

[0061] Optionally, it further includes a wheel member. A wheel mounting portion 14 is further provided on the bottom side of the cargo board 1. The wheel member includes a wheel assembly and a connecting member 331. A first mounting hole 330 is provided on the connecting member 331, a second mounting hole is provided on the wheel mounting portion 14, and a third mounting hole is provided on the wheel assembly. The wheel assembly is installed on the wheel mounting portion 14 by screws sequentially passing through the third mounting hole, the first mounting hole 330, and the second mounting hole. By providing the connecting member 331 to install the wheel assembly on the wheel mounting portion 14, the detachable installation of the wheel assembly is realized, which is convenient for the replacement and maintenance of the wheel assembly.

[0062] Optionally, the wheel assembly includes a swivel wheel 32 and a directional wheel 31. The swivel wheel 32 includes a swivel wheel bracket 322 and a swivel wheel body 321 mounted on the swivel wheel bracket 322, and a third mounting hole is formed in the swivel wheel bracket 322. The directional wheel 31 includes a directional wheel bracket 312 and a directional wheel body 311 mounted on the directional wheel bracket 312, and a third mounting hole is formed in the directional wheel bracket 312. A fourth limiting groove 3301 is provided on the lower side of a connecting member 331 connected to the directional wheel bracket 312, and the upper side of the directional wheel bracket 312 is inserted into the fourth limiting groove 3301. The fourth limiting groove 3301 can define the relative position of the directional wheel bracket 312 and the connecting member 331 in the horizontal direction, so that the directional wheel bracket 312 cannot rotate relative to the connecting member 331 in the horizontal direction, thereby improving the directional effect of the directional wheel 31.

[0063] Optionally, at least two sixth limiting portions 3311 are provided on the lower side of the connecting member 331 connected to the directional wheel bracket 312, and the at least two sixth limiting portions 3311 are spaced apart to form the fourth limiting groove 3301.

[0064] Further, there are four sixth limiting portions 3311, and the four sixth limiting portions 3311 enclose to form the fourth limiting groove 3301.

[0065] Optionally, the cargo board 1 includes a cargo board body 11 and a chute cover 12. The chute cover 12 covers the middle part of the lower side of the cargo board body 11 to form a chute 100 in cooperation with the cargo board body 11.

[0066] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A flatbed vehicle, characterized in that: include: A cargo board (1) is provided with a slide groove (100) extending in a front-rear direction; The pull rod assembly (2) comprises a pull rod body (21) and a sliding structure (23), wherein the pull rod body (21) is rotatably connected to the sliding structure (23), the sliding structure (23) is located in the slide groove (100) and can slide along the slide groove (100) between a first position and a second position, when the sliding structure (23) is in the first position, at least a portion of the pull rod body (21) is located in the slide groove (100), and when the sliding structure (23) is in the second position, the pull rod body (21) is extended. Located at the front side of the cargo board (1), the pull rod body (21) can swing between a third position and a fourth position relative to the sliding structure (23). When the pull rod body (21) is located at the third position, the pull rod body (21) is extended in the front-to-back direction. When the pull rod body (21) is located at the fourth position, an angle θ is formed between the pull rod body (21) and the cargo board (1), and the end of the pull rod body (21) away from the sliding structure (23) is located above the cargo board (1).

2. The flatbed vehicle according to claim 1, characterized in that: The pull rod assembly (2) further comprises a transfer structure (22), and the pull rod body (21) is rotationally connected to the sliding structure (23) via the transfer structure (22).

3. The flatbed vehicle according to claim 2, characterized in that: The sliding structure (23) comprises a sliding block (231) and a first connecting portion (234); the sliding structure (23) is provided with a first connecting portion (234) on the left and right sides of one end close to the pull rod body (21); a mounting groove (2304) is formed between the two first connecting portions (234); and the transfer structure (22) comprises: An adapter block (221), wherein a second connecting portion is provided at one end of the pull rod body (21) close to the sliding structure (23), and the second connecting portion is arranged in the mounting groove (2304) and connected to the adapter block (221); The rotating shaft (224) penetrates the first connecting portion (234) and the adapter block (221) simultaneously in the left-right direction, and the adapter block (221) is rotatably connected to the first connecting portion (234) via the rotating shaft (224).

4. The flatbed vehicle according to claim 3, characterized in that: A first limiting portion (2341) is provided on the side of the second connecting portion facing the adapter block (221), and the first limiting portion (2341) is provided at the upper end of the front portion of the second connecting portion. When the pull rod body (21) is located at the third position, the adapter block (221) is located at the lower side of the first limiting portion (2341); when the pull rod body (21) is located at the fourth position, the adapter block (221) is located at the rear side of the first limiting portion (2341).

5. The flatbed vehicle according to claim 4, characterized in that: A guide slope (2342) is provided on the side of the first limiting portion (2341) facing the adapter block (221) and is inclined from bottom to top towards the adapter block (221); and an arc surface (222) is provided between the front side surface and the left side surface of the adapter block (221) and / or between the front side surface and the left side surface of the adapter block (221).

6. The flatbed vehicle according to claim 3, characterized in that: The rear side of the mounting groove (2304) is provided with an arc groove (2303) recessed toward the rear, and the adapter structure (22) also includes an arc protrusion (2211) arranged on the adapter block (221), and the arc protrusion (2211) can extend into the arc groove (2303) and can rotate relative to the arc groove (2303). When the pull rod body (21) is located in the third position, the arc protrusion (2211) and the arc groove (2303) are completely fitted together.

7. The flatbed vehicle according to claim 6, characterized in that: A second limiting portion (235) is also provided on the rear side of the mounting groove (2304), and the front side surface of the second limiting portion (235) is arranged in the vertical direction. The second limiting portion (235) is located at the lower side of the arc groove (2303). The adapter structure (22) also includes a third limiting portion (223) arranged on the adapter block (221). When the pull rod body (21) is located at the third position, the third limiting portion (223) is arranged in the vertical direction at the lower side of the arc protrusion (2211), and the rear side surface of the third limiting portion (223) is abutted against the front side surface of the third limiting portion (223).

8. The flatbed vehicle according to any one of claims 3 to 7, characterized in that: The slider (231) is provided with one of a limiting structure and a first limiting groove (101), and the inner wall of the slide groove (100) is provided with the other of the limiting structure and the first limiting groove (101); the limiting structure extends into the first limiting groove (101) and can move in a front-rear direction along the first limiting groove (101).

9. The flatbed vehicle according to claim 8, characterized in that: The limiting structure comprises a fourth limiting portion (233) and a fifth limiting portion (232) which are arranged in sequence in a front-to-back direction, wherein the fourth limiting portion (233) is provided with one of a second limiting groove (2302) and a first limiting protrusion (132), and the front portion of the inner wall of the first limiting groove (101) is provided with the other of the second limiting groove (2302) and the first limiting protrusion (132). When the sliding structure (23) is located at the second position, the first limiting protrusion (132) is provided with a first limiting groove (2302). 132) is inserted into the second limiting groove (2302), the fifth limiting portion (232) is provided with one of the third limiting groove (2301) and the second limiting protrusion (131), the rear part of the inner wall of the first limiting groove (101) is provided with the other of the third limiting groove (2301) and the second limiting protrusion (131), when the sliding structure (23) is located at the first position, the second limiting protrusion (131) is inserted into the third limiting groove (2301).

10. The flatbed vehicle according to any one of claims 1 to 7, characterized in that: The pull rod body (21) is a telescopic rod.

11. The flatbed vehicle according to any one of claims 1 to 7, characterized in that: The cargo board (1) further comprises a wheel component, wherein a wheel mounting portion (14) is provided on the bottom side of the cargo board (1), wherein the wheel component comprises a wheel assembly and a connecting member (331), wherein the connecting member (331) is provided with a first mounting hole (330), wherein the wheel mounting portion (14) is provided with a second mounting hole, and wherein the wheel assembly is provided with a third mounting hole, wherein the wheel assembly is mounted on the wheel mounting portion (14) by screws passing through the third mounting hole, the first mounting hole (330) and the second mounting hole in sequence.

12. The flatbed vehicle according to claim 11, characterized in that: The wheel assembly comprises: A universal wheel (32), comprising a universal wheel bracket 322 (322) and a universal wheel body (321) mounted on the universal wheel bracket 322 (322), wherein the universal wheel bracket 322 (322) is provided with the third mounting hole; The directional wheel (31) comprises a directional wheel bracket (312) and a directional wheel body (311) mounted on the directional wheel bracket (312); the directional wheel bracket (312) is provided with the third mounting hole; the lower side of the connecting piece (331) connected to the directional wheel bracket (312) is provided with a fourth limiting groove (3301); the upper side of the directional wheel bracket (312) is inserted into the fourth limiting groove (3301); the fourth limiting groove (3301) can limit the relative position of the directional wheel bracket (312) and the connecting piece (331) in the horizontal direction.

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