A type of wing-shaped semi-trailer cargo box

Abstract

This invention discloses a wing-shaped semi-trailer body. By adding a first water-blocking strip, a second water-blocking strip, and a cover device to the existing waterproofing measures of a waterproof tarpaulin, the area covered by the tarpaulin can be further covered to prevent rainwater from entering the tarpaulin, thus implementing double waterproofing. The cover device also prevents the tarpaulin from being exposed to sun and rain, thereby extending the service life of the tarpaulin and ensuring the service life of the waterproof function at the connection between the body and the wing. During the use of the cover device, one side of the top cover is hinged to the body and the other side is connected to the wing through an elastic connection mechanism. Thus, during the rotation of the wing, the side of the top cover closest to the wing can remain in contact with the wing without interfering with the movement of the wing under the action of the elastic connection mechanism, thus providing a covering effect. In addition, when the wing rotates to the fully open state, the water on the wing will flow towards the side near the top of the body and fall into the arc-shaped water guide channel for discharge.

Description

Technical Field

[0001] This invention relates to the field of semi-trailer technology, and in particular to a wing-shaped semi-trailer body. Background Technology

[0002] The wing-type cargo box is an improvement on the ordinary cargo box. A hydraulic system allows the side wings to be opened, rotating 90 degrees to fully open, greatly facilitating loading and unloading. It has become a highly favored transportation tool for modern logistics companies. However, in the current use of wing-type cargo boxes, in addition to the built-in sealing structure at the connection between the wing and the body, an adhesive waterproof tarpaulin is usually installed at the hinge point to further cover the connection gap and protect against rain. The waterproof tarpaulin is then sealed on both sides of the connection between the wing and the body with sealant (some systems use additional long iron plates, bolts, and nuts for reinforcement). However, with prolonged exposure to sun and rain, the waterproof tarpaulin and sealant are prone to aging and cracking, thus affecting their waterproof performance. Summary of the Invention

[0003] The purpose of this invention is to provide a wing-shaped semi-trailer cargo box that, by setting a cover device to cover a water-resistant cloth, improves the waterproofing effect and extends the service life of the waterproof cloth.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a wing-shaped semi-trailer body, comprising a body, two wing plates hinged to the body, a hydraulic cylinder hinged between the body and the wing plates and for driving the wing plates to rotate, and a waterproof cloth disposed at the hinge point of the body and the wing plates. The body is provided with a first water-blocking strip near the waterproof cloth and extending to both ends of the body. The wing plates are provided with a second water-blocking strip near the waterproof cloth and extending to both ends of the wing plates. The side plate of the second water-blocking strip away from the waterproof cloth protrudes in an arc shape in the direction away from the waterproof cloth. The top plate of the second water-blocking strip protrudes in an arc shape from the side plate. The top plate of the second water-blocking strip, the arc-shaped side plate of the second water-blocking strip, and the wing plate... An arc-shaped water-guiding channel is formed between the panels to allow rainwater to flow down during the opening of the wing panels; a cover device is provided between the body and the wing panels, which covers a waterproof cloth, a first water-blocking strip, and a second water-blocking strip and does not affect the movement of the wing panels. The cover device includes a top cover plate hinged to the body on one side, multiple elastic connecting mechanisms set between the other side of the top cover plate and the body, which keep the top cover plate in contact with the wing panels during the rotation of the wing panels, and side cover plates set at both ends of the top cover plate to cover the front and rear ends of the hinge joint between the body and the wing panels. The top cover plate keeps covering the waterproof cloth, the first water-blocking strip, and the second water-blocking strip during the rotation of the wing panels, and the side cover plates keep covering the sides of the body and the sides of the wing panels during the rotation of the wing panels.

[0005] By adopting the above technical solution, and adding a first water-blocking strip, a second water-blocking strip, and a cover device on top of the waterproof fabric, the area where the waterproof fabric is located can be further covered to prevent rainwater from entering the waterproof fabric, thus implementing double waterproofing. The cover device can also prevent the waterproof fabric from being exposed to sun and rain, thereby extending the service life of the waterproof fabric and ensuring the service life of the waterproof function at the connection between the body and the wing plate. At the same time, during the use of the cover device, one side of the top cover plate is hinged to the body and the other side is connected to the wing plate through an elastic connection mechanism. Thus, during the rotation of the wing plate, the side of the top cover plate near the wing plate can remain in contact with the wing plate without interfering with the movement of the wing plate under the action of the elastic connection mechanism, thus providing a covering effect. In addition, when the wing plate is rotated to the fully open state, the water on the wing plate will flow towards the side near the top of the body. At this time, an arc-shaped water guide channel is formed between the top plate of the second water-blocking strip, the side plate of the second water-blocking strip which is arc-shaped and protruding, and the wing plate, allowing the rainwater to flow down during the opening of the wing plate, thereby preventing rainwater from flowing down to the location of the waterproof fabric.

[0006] A further configuration of the present invention is as follows: during the rotation of the wing plate, the side of the top cover plate away from the hinge end is pressed against the top of the wing plate in its initial state. The elastic connection mechanism includes a first lifting ring disposed on the side of the top cover plate away from the hinge end, a connecting seat disposed on the top of the wing plate in its initial state, a second lifting ring disposed on the connecting seat, and a tension spring disposed between the first and second lifting rings. When the wing plate rotates to the fully open state, the tension spring is in an unstretched state, and the side of the top cover plate near the wing plate abuts against the wing plate in its natural state. During the rotation of the wing plate from the fully open state to the closed state, the tension spring gradually stretches to ensure that the top cover plate abuts against the wing plate when the wing plate is fully closed.

[0007] By adopting the above technical solution, during the process of the wing plate rotating from the closed state to the fully open state, the side of the top cover plate closest to the wing plate will gradually move closer to the corner of the wing plate during the rotation, so that the tension spring will gradually return to its original position and come into contact with the tension force of the tension spring on the top cover plate. This allows the top cover plate to be tilted and rest against the wing plate under the action of gravity, avoiding the problem of gaps between the top cover plate and the wing plate caused by the elastic force of the tension spring. Finally, when the wing plate is opened on rainy days, the problem of rainwater flowing down along the gap between the top cover plate and the wing plate can be reduced.

[0008] A further provision of the present invention is that the inner side of the side cover plate and the end of the arc-shaped water guide channel are spaced apart.

[0009] By adopting the above technical solution, the inner side of the side cover plate and the arc-shaped water guide channel are spaced apart, thereby avoiding the side cover plate from affecting the drainage function of the arc-shaped water guide channel.

[0010] A further configuration of the present invention is as follows: during the process of the wing plate rotating from the closed state to the fully open state, the side of the top cover plate away from the hinge end gradually covers the corner of the wing plate in its initial state from the top of the wing plate in its initial state; the elastic connection mechanism includes a third lifting ring disposed on the side of the top cover plate away from the hinge end, a lifting sleeve disposed on the side of the wing plate in its initial state, a lifting shaft telescopically disposed on the lifting sleeve, a compression spring sleeved on the lower end of the lifting shaft, an anti-detachment end cap threaded to the lower end of the lifting shaft and for compressing the compression spring, a fourth lifting ring disposed on the upper end of the lifting shaft, a bracket disposed on the side of the top cover plate away from the hinge end and extending toward the corner of the wing plate, a guide wheel rotatably connected to the bracket and above the rotation point of the wing plate in its initial state, and a cable disposed between the third and fourth lifting rings and passing around the guide wheel; during the rotation of the wing plate, the compression spring is in a compressed state.

[0011] By adopting the above technical solution, during the process of the wing plate rotating from the closed state to the fully open state, the side of the top cover plate away from the hinge end gradually covers the corner of the wing plate in its initial state from the top of the wing plate. At this time, the top cover plate can cover the corner of the wing plate, thereby preventing rainwater from seeping in through the gap between the top cover plate and the wing plate when the wing plate is opened in the rain. At the same time, the setting of the third lifting ring, lifting sleeve, lifting shaft, compression spring, anti-detachment end cover, fourth lifting ring, bracket, guide wheel, and cable can ensure that the compression spring is always in a compressed state to fix the top cover plate, and at the same time, it will not interfere with the wing plate during use.

[0012] A further feature of the present invention is that the rotation angle of the wing plate from the closed state to the fully open state is greater than 80 degrees and less than 90 degrees.

[0013] By adopting the above technical solution, during the process of the wing plate rotating from the closed state to the fully open state, the side of the top cover plate away from the hinge end gradually covers the corner of the wing plate in the initial state from the top of the wing plate. When the rotation angle of the wing plate from the closed state to the fully open state is greater than 80 degrees and less than 90 degrees, the rainwater that falls on the connection between the wing plate and the top cover plate can flow directly down along the wing plate.

[0014] A further provision of the present invention is that a limiting portion extending in a square along its length and having a circular cross-section is provided on the side of the top cover plate away from the hinge end, and an open rubber buffer sleeve is fitted on the limiting portion to abut against the wing plate.

[0015] By adopting the above technical solution, the open rubber buffer sleeve can buffer the connection between the top cover plate and the wing plate, reduce the scratches caused by direct friction between the two, and has a certain sealing effect, which can reduce rainwater seepage from the connection between the top cover plate and the wing plate.

[0016] A further provision of the present invention is that: a plurality of reinforcing structures are provided between the first water-blocking strip and the top cover plate, the reinforcing structure including an arc-shaped fastening arm detachably disposed on the upper end of the first water-blocking strip and whose center is located on the rotation axis of the top cover plate, a fastening head disposed at the end of the arc-shaped fastening arm, a fastening seat disposed on the inner side of the top cover plate and having an arc-shaped fastening groove whose center is located on the rotation axis of the top cover plate, and a metal spring sheet disposed in the fastening seat and having a metal spring sheet for elastic clamping after the fastening head is fastened, the metal spring sheet being U-shaped, and the middle part of both sides of the metal spring sheet having a protrusion that, after deformation, fastens at the connection between the fastening head and the arc-shaped fastening arm.

[0017] By adopting the above technical solution, when the wing plate is in closed rotation, the fastening head is embedded between the two metal springs of the fastening seat. The middle part of both sides of the metal springs has a protrusion that can be fastened to the connection between the fastening head and the arc-shaped fastening arm after deformation, thereby reinforcing the top cover plate, increasing structural stability, and reducing the vibration of the top cover plate.

[0018] A further feature of the present invention is that: an arc-shaped guide shaft with its center on the rotation axis of the top cover plate is provided on the side cover plate, and arc-shaped limiting sleeves for the corresponding arc-shaped guide shafts to pass through are respectively provided on the front and rear sides of the compartment. During the rotation of the top cover plate, the arc-shaped guide shafts remain in the state of passing through the arc-shaped limiting sleeves.

[0019] By adopting the above technical solution, the arc-shaped guide shaft on the side cover plate remains in the state of passing through the arc-shaped limiting sleeve as the side cover plate rotates, thereby further increasing the stability of the top cover plate and the side cover plate during rotation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of Example 1;

[0022] Figure 2 This is a partial structural schematic diagram of Example 1;

[0023] Figure 3 yes Figure 2 A schematic diagram of the structure with the base flange fully open;

[0024] Figure 4 yes Figure 2 A structural diagram omitting the side cover plate;

[0025] Figure 5 yes Figure 3 A structural diagram omitting the side cover plate;

[0026] Figure 6 This is a partial structural schematic diagram of Example 2;

[0027] Figure 7 yes Figure 6 A magnified view of the area located at point A;

[0028] Figure 8 This is a partial structural schematic diagram of Example 3;

[0029] Figure 9 yes Figure 8 A schematic diagram of the structure with the base flange in the open position;

[0030] Figure 10 yes Figure 9 A structural diagram omitting the side cover plate;

[0031] Figure 11 yes Figure 10 A schematic diagram of a local structure based on the basic structure.

[0032] In the diagram: 1. Body; 11. First water deflector; 2. Wing plate; 21. Second water deflector; 3. Hydraulic cylinder; 4. Waterproof cloth; 5. Arc-shaped water guide groove; 6. Cover device; 61. Top cover plate; 611. Limiting part; 612. Opening rubber buffer sleeve; 62. Elastic connection mechanism; 6211. First lifting ring; 6212. Connecting seat; 6213. Second lifting ring; 6214. Tension spring; 6221. Third lifting ring; 6222. Lifting... 6223. Lowering sleeve; 6224. Lifting shaft; 6225. Compression spring; 6226. Anti-detachment end cap; 6227. Fourth lifting ring; 6228. Bracket; 6229. Guide wheel; 6220. Cable; 63. Side cover plate; 7. Reinforcing structure; 71. Arc-shaped fastening arm; 72. Fastening head; 73. Fastening seat; 731. Arc-shaped fastening groove; 74. Metal spring; 741. Protrusion; 81. Arc-shaped guide shaft; 82. Arc-shaped limiting sleeve. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Example 1: A wing-shaped trailer body for a semi-trailer, such as Figure 1 , Figure 3 and Figure 4As shown, it includes a box body 1, two wing plates 2 hinged to the box body 1, a hydraulic cylinder 3 hinged between the box body 1 and the wing plates 2 and driving the wing plates 2 to rotate, and a waterproof cloth 4 set at the hinge of the box body 1 and the wing plates 2.

[0035] like Figure 4 and Figure 5 As shown, a first water-blocking strip 11 is provided on the body 1 near the waterproof cloth 4 and extends to the front and rear ends of the body 1. A second water-blocking strip 21 is provided on the wing plate 2 near the waterproof cloth 4 and extends to the front and rear ends of the wing plate 2. The side plate of the second water-blocking strip 21 away from the waterproof cloth 4 is arc-shaped and protrudes in the direction away from the waterproof cloth 4. The top plate of the second water-blocking strip 21 protrudes from the side plate that is arc-shaped. An arc-shaped water guide groove 5 is formed between the top plate of the second water-blocking strip 21, the side plate that is arc-shaped and protrudes from the second water-blocking strip 21, and the wing plate 2, so that rainwater that seeps in can flow down during the opening of the wing plate 2.

[0036] like Figures 1 to 5 As shown, a cover device 6 is provided between the body 1 and the wing plate 2, which covers the waterproof cloth 4, the first water-blocking strip 11, and the second water-blocking strip 21 without affecting the movement of the wing plate 2. The cover device 6 includes a top cover plate 61 hinged to the body 1 on one side, multiple elastic connecting mechanisms 62 set between the other side of the top cover plate 61 and the body, which keep the top cover plate 61 in contact with the wing plate 2 during the rotation of the wing plate 2, and side cover plates 63 set at both ends of the top cover plate 61 to cover the front and rear ends of the hinge joint between the body 1 and the wing plate 2. The top cover plate 61 keeps covering the waterproof cloth 4, the first water-blocking strip 11, and the second water-blocking strip 21 during the rotation of the wing plate 2, and the side cover plates 63 keep covering the side of the body 1 and the side of the wing plate 2 during the rotation of the wing plate 2.

[0037] like Figures 2 to 5 As shown, during the rotation of the wing plate 2, the side of the top cover plate 61 away from the hinge end is pressed against the top of the wing plate 2 in its initial state. The elastic connection mechanism 62 includes a first lifting ring 6211 disposed on the side of the top cover plate 61 away from the hinge end, a connecting seat 6212 disposed on the top of the wing plate 2 in its initial state, a second lifting ring 6213 disposed on the connecting seat 6212, and a tension spring 6214 disposed between the first lifting ring 6211 and the second lifting ring 6213. When the wing plate 2 rotates to the fully open state, the tension spring 6214 is in an unstretched state, and the side of the top cover plate 61 near the wing plate 2 is in natural contact with the wing plate 2. During the rotation of the wing plate 2 from the fully open state to the closed state, the tension spring 6214 gradually stretches to ensure that the top cover plate 61 is pressed against the wing plate 2 when the wing plate 2 is fully closed.

[0038] like Figure 4 and Figure 5As shown, the inner side of the side cover plate 63 and the end of the arc-shaped water guide channel 5 are spaced apart. The top cover plate 61 is provided with a limiting part 611 extending in a square along its length and with a circular cross-section on the side away from the hinge end. An open rubber buffer sleeve 612 is fitted on the limiting part 611 to make it abut against the wing plate 2.

[0039] Implementation Results: By adding a first water-blocking strip 11, a second water-blocking strip 21, and a cover device 6 to the existing waterproofing measures on the waterproof fabric 4, the area covered by the waterproof fabric 4 can be further covered to prevent rainwater from entering the waterproof fabric 4, thus implementing double waterproofing. Furthermore, the cover device 6 prevents the waterproof fabric 4 from being exposed to sun and rain, thereby extending the service life of the waterproof fabric 4 and ensuring the service life of the waterproof function at the connection between the body 1 and the wing plate 2. Simultaneously, during the use of the cover device 6, one side of the top cover plate 61 is hinged to the body 1, and the other side is connected to the wing plate 2 via an elastic connecting mechanism 62. On plate 2, during the rotation of wing plate 2, the side of top cover plate 61 near wing plate 2 can remain in contact with wing plate 2 without interfering with the movement of wing plate 2 under the action of elastic connection mechanism 62, thus covering it. In addition, during the rotation of wing plate 2 to the fully open state, water on wing plate 2 will flow towards the side near the top of the compartment 1. At this time, an arc-shaped water guide groove 5 is formed between the top plate of the second water baffle 21, the side plate of the second water baffle 21 which is arc-shaped and protruding, and wing plate 2, so that rainwater can flow down during the opening of wing plate 2, thereby preventing rainwater from flowing down to the location of waterproof cloth 4.

[0040] During the rotation of the wing plate 2 from the closed state to the fully open state, the side of the top cover plate 61 closest to the wing plate 2 will gradually move closer to the corner of the wing plate 2 during the rotation, so that the tension spring 6214 will gradually return to its original position and the tension force of the tension spring 6214 on the top cover plate 61 will be exerted. This allows the top cover plate 61 to be tilted and rest against the wing plate 2 under the action of gravity, avoiding the problem of gaps between the top cover plate 61 and the wing plate 2 caused by the elastic force of the tension spring 6214. Finally, when the wing plate 2 is opened on rainy days, the problem of rainwater flowing down along the gap between the top cover plate 61 and the wing plate 2 can be reduced.

[0041] Example 2: A wing-shaped trailer body for a semi-trailer, such as Figure 6 and Figure 7As shown, the difference from Embodiment 1 is that multiple reinforcing structures 7 are provided between the first water-blocking strip 11 and the top cover plate 61. The reinforcing structure 7 includes an arc-shaped fastening arm 71 detachably mounted on the upper end of the first water-blocking strip 11 with its center located on the rotation axis of the top cover plate 61, a fastening head 72 mounted at the end of the arc-shaped fastening arm 71, a fastening seat 73 mounted on the inner side of the top cover plate 61 with an arc-shaped fastening groove 731 whose center is located on the rotation axis of the top cover plate 61, and a metal spring piece 74 mounted in the fastening seat 73 for elastic clamping after the fastening head 72 is fastened. The metal spring piece 74 is U-shaped, and the middle of both sides of the metal spring piece 74 has a protrusion 741 that, after deformation, fastens at the connection between the fastening head 72 and the arc-shaped fastening arm 71.

[0042] like Figure 6 As shown, the side cover plate 63 is provided with an arc-shaped guide shaft 81 whose center is on the rotation axis of the top cover plate 61. The front and rear sides of the compartment 1 are respectively provided with arc-shaped limiting sleeves 82 for the corresponding arc-shaped guide shafts 81 to pass through. During the rotation of the top cover plate 61, the arc-shaped guide shafts 81 always remain in the state of passing through the arc-shaped limiting sleeves 82.

[0043] Implementation effect: When the wing plate 2 is in the closed rotation position, the fastening head 72 is embedded between the two metal spring pieces 74 of the fastening seat 73. The middle part of both sides of the metal spring pieces 74 has a protrusion 741 that, after deformation, fastens at the connection between the fastening head 72 and the arc-shaped fastening arm 71, thereby reinforcing the top cover plate 61, increasing structural stability, and reducing the vibration of the top cover plate 61. The arc-shaped guide shaft 81 on the side cover plate 63 remains in the state of passing through the arc-shaped limiting sleeve 82 during the rotation of the side cover plate 63, thereby further increasing the stability of the top cover plate 61 and the side cover plate 63 during rotation.

[0044] Example 3: A wing-shaped trailer body for a semi-trailer, such as Figures 8 to 11As shown, the difference from Embodiment 1 is that: during the process of the wing plate 2 rotating from the closed state to the fully open state, the side of the top cover plate 61 away from the hinge end gradually covers the corner of the wing plate 2 in its initial state from the top of the wing plate 2; the elastic connection mechanism 62 includes a third lifting ring 6221 disposed on the side of the top cover plate 61 away from the hinge end, a lifting sleeve 6222 disposed on the side of the wing plate 2 in its initial state, a lifting shaft 6223 telescopically disposed on the lifting sleeve 6222, a compression spring 6224 sleeved on the lower end of the lifting shaft 6223, and a threaded connection to the lifting... The structure includes: an anti-detachment end cap 6225 at the lower end of the lowering shaft 6223 that compresses the compression spring 6224; a fourth lifting ring 6226 at the upper end of the lifting shaft 6223; a bracket 6227 extending from the corner of the top cover plate 61 away from the hinge end towards the wing plate 2; a guide wheel 6228 rotatably connected to the bracket 6227 and located above the rotation point of the wing plate 2 in its initial state; and a cable 6229 positioned between the third lifting ring 6221 and the fourth lifting ring 6226 and passing around the guide wheel 6228. During the rotation of the wing plate 2, the compression spring 6224 remains compressed. Simultaneously, the rotation angle of the wing plate 2 from the closed state to the fully open state is greater than 80 degrees and less than 90 degrees.

[0045] Implementation effect: During the process of the wing plate 2 rotating from the closed state to the fully open state, the side of the top cover plate 61 away from the hinge end gradually covers the corner of the wing plate 2 in its initial state from the top of the wing plate 2. At this time, the top cover plate 61 can cover the corner of the wing plate 2, thereby preventing rainwater from seeping in through the gap between the top cover plate 61 and the wing plate 2 when the wing plate 2 is opened in the rain. At the same time, the setting of the third lifting ring 6221, lifting sleeve 6222, lifting shaft 6223, compression spring 6224, anti-detachment end cover 6225, fourth lifting ring 6226, bracket 6227, guide wheel 6228, and cable 6229 can ensure that the compression spring 6224 is always in a compressed state to fix the top cover plate 61, and at the same time, it will not interfere with the wing plate 2 during use.

Claims

1. A wing-shaped cargo box for a semi-trailer, comprising a cargo box (1), two wing plates (2) hinged to the cargo box (1), a hydraulic cylinder (3) hinged between the cargo box (1) and the wing plates (2) and for driving the wing plates (2) to rotate, and a waterproof cloth (4) disposed at the hinge point between the cargo box (1) and the wing plates (2), characterized in that: The body (1) is provided with a first water-blocking strip (11) that is close to the waterproof cloth (4) and extends to the front and rear ends of the body (1). The wing plate (2) is provided with a second water-blocking strip (21) that is close to the waterproof cloth (4) and extends to the front and rear ends of the wing plate (2). The side plate of the second water-blocking strip (21) away from the waterproof cloth (4) is arc-shaped and protrudes in the direction away from the waterproof cloth (4). The second water-blocking strip (21) has a top plate. An arc-shaped water guide groove (5) is formed between the top plate of the second water-blocking strip (21), the side plate of the second water-blocking strip (21) that is arc-shaped and protrudes, and the wing plate (2) to allow rainwater to flow down during the opening of the wing plate (2). Between the body (1) and the wing plate (2), a cover device (6) is provided that covers the waterproof cloth (4), the first water-blocking strip (11), and the second water-blocking strip (21) without affecting the movement of the wing plate (2). The cover device (6) includes a top cover plate (61) hinged to the body (1) on one side, multiple elastic connecting mechanisms (62) set between the other side of the top cover plate (61) and the body, so that the top cover plate (61) remains in contact with the wing plate (2) during the rotation of the wing plate (2), and side cover plates (63) set at both ends of the top cover plate (61) to cover the front and rear ends of the hinge joint between the body (1) and the wing plate (2). The top cover plate (61) remains covered with the waterproof cloth (4), the first water-blocking strip (11), and the second water-blocking strip (21) during the rotation of the wing plate (2), and the side cover plates (63) remain covered with the side of the body (1) and the side of the wing plate (2) during the rotation of the wing plate (2).

2. The wing-shaped cargo box of a semi-trailer according to claim 1, characterized in that: During the rotation of the wing plate (2), the top cover plate (61) on the side away from the hinge end is pressed against the top of the wing plate (2) in its initial state. The elastic connection mechanism (62) includes a first lifting ring (6211) disposed on the side of the top cover plate (61) away from the hinge end, a connecting seat (6212) disposed on the top of the wing plate (2) in its initial state, a second lifting ring (6213) disposed on the connecting seat (6212), and a connecting seat (6213) disposed on the first lifting ring (6211) and the second lifting ring (6213). The tension spring (6214) between the wing plate (2) and the wing plate (2) is in a state of not being stretched when the wing plate (2) is rotated to the fully open state, and the top cover plate (61) on the side of the wing plate (2) near the wing plate (2) is in a natural state against the wing plate (2); during the process of the wing plate (2) rotating from the fully open state to the closed state, the tension spring (6214) is gradually stretched so that the top cover plate (61) is pressed against the wing plate (2) when the wing plate (2) is fully closed.

3. The wing-shaped trailer of a semi-trailer according to claim 2, characterized in that: The inner side of the side cover plate (63) and the end of the arc-shaped water guide channel (5) are spaced apart.

4. The wing-shaped trailer body of a semi-trailer according to claim 1, characterized in that: During the process of the wing plate (2) rotating from the closed state to the fully open state, the top cover plate (61) on the side away from the hinge end gradually covers the corner of the wing plate (2) in its initial state from the top of the wing plate (2); the elastic connection mechanism (62) includes a third lifting ring (6221) provided on the side of the top cover plate (61) away from the hinge end, a lifting sleeve (6222) provided on the side of the wing plate (2) in its initial state, a lifting shaft (6223) telescopically provided on the lifting sleeve (6222), a compression spring (6224) sleeved on the lower end of the lifting shaft (6223), and a threaded connection to the lower end of the lifting shaft (6223). The compression spring (6224) is compressed by an anti-detachment end cap (6225), a fourth lifting ring (6226) is set on the upper end of the lifting shaft (6223), a bracket (6227) is set on the side of the top cover plate (61) away from the hinge end and extends towards the wing plate (2), a guide wheel (6228) is rotatably connected to the bracket (6227) and is above the rotation point of the wing plate (2) in the initial state, and a cable (6229) is set between the third lifting ring (6221) and the fourth lifting ring (6226) and passes around the guide wheel (6228); during the rotation of the wing plate (2), the compression spring (6224) is in a compressed state.

5. The wing-shaped trailer body of a semi-trailer according to claim 4, characterized in that: The rotation angle of the wing plate (2) from the closed state to the fully open state is greater than 80 degrees and less than 90 degrees.

6. The wing-shaped trailer of a semi-trailer according to claim 1, characterized in that: The top cover plate (61) is provided with a limiting part (611) extending in a square along its length and having a circular cross-section on the side away from the hinge end. An open rubber buffer sleeve (612) is fitted on the limiting part (611) to abut against the wing plate (2).

7. The wing-shaped trailer of a semi-trailer according to claim 1, characterized in that: A plurality of reinforcing structures (7) are provided between the first water-blocking strip (11) and the top cover plate (61). The reinforcing structure (7) includes an arc-shaped fastening arm (71) detachably disposed on the upper end of the first water-blocking strip (11) and whose center is located on the rotation axis of the top cover plate (61), a fastening head (72) disposed at the end of the arc-shaped fastening arm (71), a fastening seat (73) disposed on the inner side of the top cover plate (61) and having an arc-shaped fastening groove (731) whose center is located on the rotation axis of the top cover plate (61), and a metal spring (74) disposed in the fastening seat (73) and having elastic clamping after the fastening head (72) is fastened. The metal spring (74) is U-shaped, and the middle part of both sides of the metal spring (74) has a protrusion (741) that fastens at the connection between the fastening head (72) and the arc-shaped fastening arm (71) after deformation.

8. The wing-shaped cargo box of a semi-trailer according to claim 1, characterized in that: The side cover plate (63) is provided with an arc-shaped guide shaft (81) whose center is on the rotation axis of the top cover plate (61). The front and rear sides of the compartment (1) are respectively provided with arc-shaped limiting sleeves (82) for the corresponding arc-shaped guide shafts (81) to pass through. During the rotation of the top cover plate (61), the arc-shaped guide shafts (81) remain in the state of passing through the arc-shaped limiting sleeves (82).

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