Platform trailer

Abstract

The utility model belongs to the technical field of trailers, and particularly relates to a platform trailer which comprises a trailer body, a first baffle and a second baffle are symmetrically and rotationally installed on the trailer body, and a first flashing board and a second flashing board are symmetrically and rotationally installed on the trailer body and located above the first baffle. Fixing columns are fixedly installed on the right sides of the two first baffles and the right sides of the two second baffles, the two ends of the two first flashing boards extend into the trailer body and are fixedly provided with first bevel gears, the two ends of the two second flashing boards extend into the trailer body and are fixedly provided with second bevel gears, and the first bevel gears are meshed with the adjacent second bevel gears; the first bevel gear and the second bevel gear are rotationally connected with the trailer body. The four second sliding grooves are formed in the two first baffles and the two second baffles correspondingly. When the whole device is used, the two first baffles and the two second baffles are convenient to disassemble, and meanwhile cargoes in the trailer body can be sheltered from rain, so that the cargoes cannot be wetted by the rain.

Description

Technical Field

[0001] The utility model belongs to the technical field of trailers, and in particular relates to a flatbed trailer. Background Art

[0002] As flatbed trailers are used more and more widely, customers have higher and higher requirements on the turning radius, cornering passability, steering resistance, tire wear speed, etc. of flatbed trailers. Currently, most of the domestic flatbed trailers are one-way traction flatbed trailers.

[0003] For example, the Chinese patent with the publication number CN213862477U discloses a new type of flatbed trailer, including a frame, a front axle, a rear axle and a traction mechanism, the traction mechanism includes a traction frame, a traction hook and a slewing bearing, fixed guardrails are respectively installed at the front and rear ends of the top of the frame, a bracket is installed between the front and rear fixed guardrails, a rain shelter is installed outside the bracket, and flip-over movable guardrails are respectively installed at the left and right ends of the top of the frame, and at least two hinges are installed along the length direction at the junction of the bottom end of each movable guardrail and the frame, and locks are installed at the junction of the front and rear ends of each movable guardrail and the frame. In the above manner, the utility model can prevent the goods on the frame from sliding or tipping outside the frame during transportation, thereby ensuring the stable transportation of the goods; and can ensure that the goods loaded on the frame will not be wetted by rain when it rains during transportation, thereby ensuring the quality of the goods.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when in use, such as: when the above device is in use, rainwater may enter the device from the side, causing the goods stored in the device to get wet, affecting the quality of the goods, and the movable guardrail of the above device cannot be disassembled when in use, and it is not convenient to disassemble the guardrail when it is damaged or needs repair. In view of this, we propose a flatbed trailer. Utility Model Content

[0006] The purpose of the utility model is to provide a flatbed trailer to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides a flatbed trailer, comprising:

[0008] A trailer body, on which baffle plate 1 and baffle plate 2 are symmetrically rotatably mounted, on which baffle plate 1 and baffle plate 2 are symmetrically rotatably mounted, on which baffle plate 1 and baffle plate 2 are symmetrically rotatably mounted, on the right sides of the two baffle plates 1 and the two baffle plates 2, both ends of the two rain shield plates 1 extend into the trailer body and are fixedly mounted with bevel gear 1, both ends of the two rain shield plates 2 extend into the trailer body and are fixedly mounted with bevel gear 2, the bevel gear 1 meshes with the adjacent bevel gear 2, and both bevel gear 1 and bevel gear 2 are rotatably connected to the trailer body;

[0009] Four sliding grooves 2, the four sliding grooves 2 are respectively opened in the two baffles 1 and the two baffles 2;

[0010] Four fixing components, the four fixing components are respectively located in the four sliding grooves 2 and are respectively used to limit the positions of the two baffles 1 and the two baffles 2;

[0011] A driving assembly is located in the trailer body and is used to drive one of the bevel gears 2 to rotate.

[0012] In the technical solution, the two baffles 1 and the two baffles 2 can be disassembled by the four fixing components, which is convenient for maintenance. The new two baffles 1 and the two baffles 2 can be installed on the trailer body by the four fixing components, which is convenient for replacing the two baffles 1 and the two baffles 2 without using tools.

[0013] When it rains, the driving assembly is set up to drive two of the bevel gears 2 to rotate and one of the rain shields 2 to rotate. Under the action of meshing, two of the bevel gears 2 drive four bevel gears 1 to rotate and two rain shields 1 to rotate. Under the action of meshing, two of the bevel gears 1 drive the other two bevel gears 2 to rotate and another rain shield 2 to rotate. When the two rain shields 1 and the two rain shields 2 are rotated downward by 90°, the goods in the trailer body can be shielded from rain so that the rain will not wet the goods.

[0014] In the above technical solution, further, it also includes:

[0015] Four sliding grooves 1 are all opened in the trailer body, and the four sliding grooves 1 are respectively located on one side of four fixed columns, a limit block is slidably installed in the sliding groove 1, and a plurality of springs fixed to the inner wall of the sliding groove 1 are fixedly installed on the top of the limit block, one side of the limit block contacts the fixed column, and the other side of the limit block penetrates the trailer body and extends to the outside.

[0016] In the present technical solution, when one of them needs to remove baffle one, first pull one of the limit blocks upward to slide upward, and at the same time, several springs are squeezed and contracted. When the limit block slides to a suitable position, baffle one can be rotated downward.

[0017] In the above technical solution, further, the fixing assembly includes:

[0018] Two sliding posts, both of which are slidably mounted in the second sliding groove, and both ends of the two sliding posts that are away from each other penetrate the second sliding groove and extend into the trailer body, and both ends of the two sliding posts that are away from each other are plugged and matched with the trailer body;

[0019] Two racks, both of which are slidably installed in sliding groove 2, and the two racks are respectively fixedly installed at one end of two sliding columns close to each other, a first gear is rotatably installed in sliding groove 2 and between the two racks, the first gear is meshed with the two racks, one end of the first gear passes through sliding groove 2 and extends to the outside, a torsion spring is sleeved on one end of the first gear, and the two ends of the torsion spring are respectively fixed to one side of the first gear and the inner wall of sliding groove 2.

[0020] In the technical solution, one of the first gears is then rotated forward, and the corresponding torsion spring is twisted at the same time, and the first gear drives the two racks meshing with it to slide and approach each other, and the two racks respectively drive the two sliding posts to slide and approach each other. When the two sliding posts are detached from the trailer body, one of the baffles 1 can be pulled out. Through the above operation, the two baffles 1 and the two baffles 2 can be disassembled, which is convenient for maintenance;

[0021] When one of the baffles 1 is damaged, it is removed through the above operation, and then a new baffle 1 is placed on the trailer body. Then the personnel loosens the first gear, and under the action of the torsion force of the torsion spring, the torsion spring drives the first gear to rotate in the opposite direction, and the first gear drives the two racks meshing with it to slide and move away from each other, and the two racks respectively drive the two sliding columns to slide and move away from each other, and the two racks are respectively inserted into the trailer body, and the new baffle 1 can be installed on the trailer body, so as to facilitate the replacement of the two baffles 1 and the two baffles 2.

[0022] In the above technical solution, further, the driving component includes:

[0023] A power cavity is provided in the trailer body, and the power cavity is located on one side of one of the bevel gears 2, one end of one of the bevel gears 2 extends into the power cavity and is fixedly installed with a worm wheel, one end of one of the bevel gears 2 and the worm wheel are both rotatably connected to the power cavity, a worm is rotatably installed in the power cavity and on one side of the worm wheel, the worm is meshed with the worm wheel, and one end of the worm passes through the power cavity and extends to the outside.

[0024] In the present technical solution, when it rains, the personnel first rotate the worm, which drives the worm wheel meshing with it to rotate, and the worm wheel drives two of the bevel gears 2 to rotate and one of the rain shields 2 to rotate. Under the action of meshing, two of the bevel gears 2 drive four bevel gears 1 to rotate and two rain shields 1 to rotate. Under the action of meshing, two of the bevel gears 1 drive the other two bevel gears 2 to rotate and another rain shield 2 to rotate. When the two rain shields 1 and the two rain shields 2 are rotated downward by 90°, the goods in the trailer body can be shielded from rain so that the rain will not wet the goods.

[0025] In the above technical solution, further, an operating disk 2 is fixedly mounted on one end of the first gear.

[0026] In the technical solution, the second operating panel is provided to facilitate personnel to rotate the first gear.

[0027] In the above technical solution, further, an operating disk 1 is fixedly mounted on one end of the worm.

[0028] In the technical solution, an operating panel is provided to facilitate personnel to rotate the worm.

[0029] In the above technical solution, further, the cross-section of the limit block is L-shaped.

[0030] In this technical solution, it is ensured that the limit block can limit the position of the fixed column, and it is convenient for personnel to pull the limit block.

[0031] The beneficial effects of the utility model are:

[0032] 1. The flatbed trailer can disassemble the two baffles 1 and the two baffles 2 through the four fixed components, which is convenient for maintenance. The new two baffles 1 and the two baffles 2 can be installed on the trailer body through the four fixed components, which makes it convenient to replace the two baffles 1 and the two baffles 2 without using tools.

[0033] 2. When it rains, the flatbed trailer can drive two of the bevel gears 2 and one of the rain shields 2 to rotate through the set driving assembly. Under the action of meshing, the two bevel gears 2 drive the four bevel gears 1 and the two rain shields 1 to rotate. Under the action of meshing, the two bevel gears 1 drive the other two bevel gears 2 and the other rain shield 2 to rotate. When the two rain shields 1 and the two rain shields 2 are rotated downward by 90°, the goods in the trailer body can be shielded from rain so that the rain will not wet the goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0035] Figure 2 This is one of the schematic diagrams of the sectional structure of the trailer body of the utility model;

[0036] Figure 3 The utility model Figure 2 The enlarged structure at A in the middle is shown;

[0037] Figure 4 This is the second schematic diagram of the sectional structure of the trailer body of the utility model;

[0038] Figure 5 The utility model Figure 4 The enlarged structure at A in the middle is shown;

[0039] Figure 6 It is a cross-sectional structural diagram of a baffle of the utility model;

[0040] Figure 7 The utility model Figure 6 The enlarged structural diagram at A in the middle;

[0041] Figure 8 It is a schematic diagram of the structure of a baffle area of ​​the utility model.

[0042] The symbols in the figure are:

[0043] 1. Trailer body; 2. Baffle 1; 3. Baffle 2; 4. Rain shield 1; 5. Rain shield 2; 6. Fixed column; 7. Sliding groove 1; 8. Limit block; 9. Spring; 10. Sliding groove 2; 11. Sliding column; 12. Rack; 13. First gear; 14. Torsion spring; 15. Bevel gear 1; 16. Bevel gear 2; 17. Power chamber; 18. Worm gear; 19. Worm; 20. Operating panel 1; 21. Operating panel 2. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0045] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0047] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0048] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0049] Embodiment 1:

[0050] See also Figure 1 - Figure 8 As shown, this embodiment provides a flatbed trailer, comprising:

[0051] A trailer body 1, on which baffle plate 1 2 and baffle plate 2 3 are symmetrically rotatably mounted, on which a rain shield plate 1 4 and a rain shield plate 2 5 are symmetrically rotatably mounted, on the trailer body 1 and above the baffle plate 1 2, a fixing column 6 is fixedly mounted on the right sides of the two baffle plates 1 2 and the two baffle plates 2 3, both ends of the two rain shield plates 1 4 extend into the trailer body 1 and are fixedly mounted with a bevel gear 1 15, both ends of the two rain shield plates 2 5 extend into the trailer body 1 and are fixedly mounted with a bevel gear 2 16, the bevel gear 1 15 is meshed with the adjacent bevel gear 2 16, and the bevel gear 1 15 and the bevel gear 2 16 are both rotatably connected to the trailer body 1;

[0052] Four sliding grooves 2 10, the four sliding grooves 2 10 are respectively opened in the two baffles 1 2 and the two baffles 2 3;

[0053] Four fixing components, the four fixing components are respectively located in the four sliding grooves 10, and are respectively used to limit the positions of the two baffles 1 2 and the two baffles 2 3;

[0054] The driving assembly is located in the trailer body 1 and is used to drive one of the bevel gears 16 to rotate.

[0055] Among them, through the four fixed components, the two baffles 1 2 and the two baffles 2 3 can be disassembled to facilitate maintenance thereof, and through the four fixed components, the new two baffles 1 2 and the two baffles 2 3 can be installed on the trailer body 1, so that the two baffles 1 2 and the two baffles 2 3 can be easily replaced without using tools;

[0056] When it rains, the driving assembly is set up to drive two of the bevel gears 2 16 and one of the rain shields 2 5 to rotate. Under the action of meshing, two of the bevel gears 2 16 drive four bevel gears 15 to rotate and two rain shields 1 4 to rotate. Under the action of meshing, two of the bevel gears 15 drive the other two bevel gears 2 16 to rotate and another rain shield 2 5 to rotate. When the two rain shields 1 4 and the two rain shields 2 5 are rotated downward by 90°, the goods in the trailer body 1 can be shielded from rain so that the rain will not wet the goods.

[0057] In this embodiment, it also includes:

[0058] Four sliding grooves 7, all of which are provided in the trailer body 1, and are respectively located on one side of four fixed columns 6, a limit block 8 is slidably installed in the sliding groove 7, a plurality of springs 9 fixed to the inner wall of the sliding groove 7 are fixedly installed on the top of the limit block 8, one side of the limit block 8 is in contact with the fixed column 6, and the other side of the limit block 8 penetrates the trailer body 1 and extends to the outside;

[0059] When one of them is needed to remove the baffle 2, first pull one of the limit blocks 8 upward to slide upward, and at the same time, a number of springs 9 are squeezed and contracted. When the limit block 8 slides to a suitable position, the baffle 2 can be rotated downward.

[0060] Embodiment 2:

[0061] This embodiment provides a flatbed trailer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0062] In this embodiment, the fixing component includes:

[0063] Two sliding posts 11, both sliding posts 11 are slidably mounted in the second sliding groove 10, and ends of the two sliding posts 11 that are away from each other penetrate the second sliding groove 10 and extend into the trailer body 1, and ends of the two sliding posts 11 that are away from each other are plugged and matched with the trailer body 1;

[0064] Two racks 12 are slidably installed in the sliding groove 10, and the two racks 12 are respectively fixedly installed at one end of the two sliding columns 11 close to each other. A first gear 13 is rotatably installed in the sliding groove 10 and between the two racks 12. The first gear 13 is meshed with the two racks 12. One end of the first gear 13 passes through the sliding groove 10 and extends to the outside. A torsion spring 14 is sleeved on one end of the first gear 13. The two ends of the torsion spring 14 are respectively fixed to one side of the first gear 13 and the inner wall of the sliding groove 10.

[0065] Then, one of the first gears 13 is rotated forward, and the corresponding torsion spring 14 is twisted at the same time. The first gear 13 drives the two racks 12 meshing therewith to slide and approach each other, and the two racks 12 respectively drive the two sliding posts 11 to slide and approach each other. When the two sliding posts 11 are detached from the trailer body 1, one of the baffles 1 2 can be pulled out. Through the above operation, the two baffles 1 2 and the two baffles 2 3 can be disassembled for easy maintenance.

[0066] When one of the baffles 2 is damaged, it is removed through the above operation, and then a new baffle 2 is placed on the trailer body 1. Then the personnel loosens the first gear 13. Under the torsional force of the torsion spring 14, the torsion spring 14 drives the first gear 13 to rotate in the opposite direction. The first gear 13 drives the two racks 12 meshing with it to slide and move away from each other. The two racks 12 respectively drive the two sliding columns 11 to slide and move away from each other. The two racks 12 are respectively inserted into the trailer body 1, and the new baffle 2 can be installed on the trailer body 1, so as to facilitate the replacement of the two baffles 2 and the two baffles 3.

[0067] Embodiment 3:

[0068] This embodiment provides a flatbed trailer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] In this embodiment, the driving component includes:

[0070] A power chamber 17 is provided in the trailer body 1, and the power chamber 17 is located on one side of one of the bevel gears 16, one end of one of the bevel gears 16 extends into the power chamber 17 and is fixedly mounted with a worm gear 18, one end of one of the bevel gears 16 16 and the worm gear 18 are both rotatably connected to the power chamber 17, a worm 19 is rotatably mounted in the power chamber 17 and located on one side of the worm gear 18, the worm 19 is meshed with the worm gear 18, and one end of the worm 19 passes through the power chamber 17 and extends to the outside.

[0071] Among them, when it rains, the personnel first rotate the worm 19, the worm 19 drives the worm wheel 18 meshing with it to rotate, the worm wheel 18 drives two of the bevel gears 2 16 to rotate and one of the rain shields 2 5 to rotate, under the action of meshing, two of the bevel gears 2 16 drive four bevel gears 15 to rotate and two rain shields 1 4 to rotate, under the action of meshing, two of the bevel gears 1 15 drive the other two bevel gears 2 16 to rotate and another rain shield 2 5 to rotate, when the two rain shields 1 4 and the two rain shields 2 5 are rotated downward by 90°, the goods in the trailer body 1 can be shielded from rain, so that the rain will not wet the goods.

[0072] Embodiment 4:

[0073] This embodiment provides a flatbed trailer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0074] In this embodiment, an operating disk 21 is fixedly mounted on one end of the first gear 13 .

[0075] The operating panel 21 is provided to facilitate personnel to rotate the first gear 13 .

[0076] Embodiment 5:

[0077] This embodiment provides a flatbed trailer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0078] In this embodiment, an operating panel 20 is fixedly mounted on one end of the worm 19 .

[0079] Among them, the operating panel 20 is provided to facilitate personnel to rotate the worm 19.

[0080] Embodiment 6:

[0081] This embodiment provides a flatbed trailer, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0082] In this embodiment, the cross section of the limiting block 8 is L-shaped.

[0083] Among them, it is ensured that the limit block 8 can limit the position of the fixed column 6, and it is convenient for personnel to pull the limit block 8.

[0084] Working principle: When one of them is needed to remove the baffle 1 2, first pull one of the limit blocks 8 upward to slide upward, and at the same time, a number of springs 9 are squeezed and contracted. When the limit block 8 slides to a suitable position, the baffle 1 2 can be rotated downward;

[0085] Then, one of the operating discs 21 is rotated forward, and the operating disc 21 drives the first gear 13 to rotate forward, and the corresponding torsion spring 14 is twisted at the same time, and the first gear 13 drives the two racks 12 meshing therewith to slide and approach each other, and the two racks 12 respectively drive the two sliding posts 11 to slide and approach each other. When the two sliding posts 11 are detached from the trailer body 1, one of the baffles 1 2 can be pulled out. Through the above operation, the two baffles 1 2 and the two baffles 2 3 can be disassembled for easy maintenance;

[0086] When one of the baffles 1 2 is damaged, it is removed through the above operation, and then a new baffle 1 2 is placed on the trailer body 1. Then the operator loosens the operating plate 2 21, and under the torsion force of the torsion spring 14, the torsion spring 14 drives the first gear 13 to rotate in the opposite direction, and the first gear 13 drives the two racks 12 meshing therewith to slide and move away from each other, and the two racks 12 respectively drive the two sliding columns 11 to slide and move away from each other, and the two racks 12 are respectively inserted into the trailer body 1, and the new baffle 1 2 can be installed on the trailer body 1, so as to facilitate the replacement of the two baffles 1 2 and the two baffles 2 3;

[0087] When it rains, the operator first turns the operating disk 20, the operating disk 20 drives the worm 19 to rotate, the worm 19 drives the worm wheel 18 meshing with it to rotate, the worm wheel 18 drives two of the bevel gears 2 16 to rotate and one of the rain shields 2 5 to rotate, under the action of meshing, two of the bevel gears 2 16 drive four bevel gears 15 to rotate and two rain shields 4 to rotate, under the action of meshing, two of the bevel gears 15 drive the other two bevel gears 2 16 to rotate and another rain shield 2 5 to rotate, when the two rain shields 4 and the two rain shields 2 5 are rotated downward by 90°, the goods in the trailer body 1 can be shielded from rain so that the rain will not wet the goods.

[0088] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A flatbed trailer, characterized in that: include: A trailer body (1), wherein a baffle plate 1 (2) and a baffle plate 2 (3) are symmetrically rotatably mounted on the trailer body (1), a rain shield plate 1 (4) and a rain shield plate 2 (5) are symmetrically rotatably mounted on the trailer body (1) and located above the baffle plate 1 (2), a fixing column (6) is fixedly mounted on the right sides of the two baffle plates 1 (2) and the two baffle plates 2 (3), both ends of the two rain shield plates 1 (4) extend into the trailer body (1) and are fixedly mounted with a bevel gear 1 (15), both ends of the two rain shield plates 2 (5) extend into the trailer body (1) and are fixedly mounted with a bevel gear 2 (16), the bevel gear 1 (15) is meshed with an adjacent bevel gear 2 (16), and both the bevel gear 1 (15) and the bevel gear 2 (16) are rotatably connected to the trailer body (1); Four sliding grooves 2 (10), the four sliding grooves 2 (10) are respectively opened in the two baffles 1 (2) and the two baffles 2 (3); Four fixing components, the four fixing components are respectively located in the four sliding grooves 2 (10), and are respectively used to limit the positions of the two baffles 1 (2) and the two baffles 2 (3); A drive assembly is located in the trailer body (1) and is used to drive one of the bevel gears (16) to rotate.

2. A flatbed trailer according to claim 1, characterized in that: Also includes: Four sliding grooves (7), the four sliding grooves (7) are all opened in the trailer body (1), and the four sliding grooves (7) are respectively located on one side of four fixed columns (6), a limit block (8) is slidably installed in the sliding groove (7), and a plurality of springs (9) fixed to the inner wall of the sliding groove (7) are fixedly installed on the top of the limit block (8), one side of the limit block (8) is in contact with the fixed column (6), and the other side of the limit block (8) passes through the trailer body (1) and extends to the outside.

3. A flatbed trailer according to claim 2, characterized in that: The fixing assembly comprises: Two sliding posts (11), both of the sliding posts (11) are slidably mounted in the second sliding groove (10), and the ends of the two sliding posts (11) that are away from each other penetrate the second sliding groove (10) and extend into the trailer body (1), and the ends of the two sliding posts (11) that are away from each other are plugged into and matched with the trailer body (1); Two racks (12), both of which are slidably mounted in the second sliding groove (10), and the two racks (12) are respectively fixedly mounted on one end of the two sliding columns (11) close to each other, a first gear (13) is rotatably mounted in the second sliding groove (10) and between the two racks (12), the first gear (13) is meshed with the two racks (12), one end of the first gear (13) passes through the second sliding groove (10) and extends to the outside, a torsion spring (14) is sleeved on one end of the first gear (13), and the two ends of the torsion spring (14) are respectively fixed to one side of the first gear (13) and the inner wall of the second sliding groove (10).

4. A flatbed trailer according to claim 3, characterized in that: The drive assembly comprises: A power chamber (17) is provided in the trailer body (1), and the power chamber (17) is located on one side of one of the bevel gears (16), one end of one of the bevel gears (16) extends into the power chamber (17) and is fixedly mounted with a worm wheel (18), one end of one of the bevel gears (16) and the worm wheel (18) are both rotatably connected to the power chamber (17), a worm (19) is rotatably mounted in the power chamber (17) and on one side of the worm wheel (18), the worm (19) is meshed with the worm wheel (18), and one end of the worm (19) passes through the power chamber (17) and extends to the outside.

5. A flatbed trailer according to claim 3, characterized in that: An operating disc 2 (21) is fixedly mounted on one end of the first gear (13).

6. A flatbed trailer according to claim 4, characterized in that: An operating disc 1 (20) is fixedly mounted on one end of the worm (19).

7. A flatbed trailer according to claim 2, characterized in that: The cross section of the limiting block (8) is L-shaped.

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