A multifunctional vehicle for highway maintenance

Abstract

The utility model relates to the technical field of multifunctional maintenance vehicle equipment, specifically a multifunctional vehicle for highway maintenance, comprising a moving part, the top of the moving part is fixedly connected to the bottom of the vehicle body part, the guide groove of the vehicle body part is slidably connected to the outer wall of the warning part, the vehicle body part comprises a vehicle head, a vehicle box, a clamping block, a box side plate, a box cover, a blocking block, a repair material barrel and a water tank. When it is necessary to maintain the highway, a rotating shaft is driven to rotate by starting a motor, and the rotating shaft drives a first connecting plate to make a circular motion with the axis of the rotating shaft. The rotating shaft serves as the fulcrum of a lever, and the connecting rod serves as the fulcrum of another lever, so that the connecting rod and the second connecting plate form a rotatable connection point. The first sliding rod and the second sliding rod first move upward to raise the box cover. When the first sliding rod reaches the top of the sliding groove of the guide plate, the second sliding rod rotates along the sliding groove to rotate the box cover with its own side wing as the axis, thereby realizing the control of the box cover.

Description

Technical Field

[0001] The utility model relates to the technical field of multifunctional maintenance vehicle equipment, in particular to a multifunctional maintenance vehicle for expressways. Background Art

[0002] After the highway is completed and opened to traffic, the quality of highway use will gradually decline due to the wear and impact of wheels, erosion and weathering by natural forces such as rainstorms, floods, sandstorms, ice and snow, sunlight, ice melting, as well as human damage and certain defects left over from construction. Therefore, after the highway is completed and opened to traffic, maintenance measures must be taken and it must be continuously updated and improved. Highway maintenance must repair damaged parts in a timely manner, otherwise it will lead to increased investment in repair projects, shorten the service life of the highway, and cause losses to road users. Highway maintenance must also pay attention to emergency services and repairs to keep the highway unobstructed.

[0003] At present, most functional components of multi-purpose vehicles for highway maintenance on the market are placed in an uncovered compartment for ease of use, which reduces the service life of the components under the influence of rain and sun, bringing inconvenience to people's use. Utility Model Content

[0004] The purpose of the utility model is to provide a multifunctional vehicle for highway maintenance, so as to solve the problem that the functional components mentioned in the above background technology have reduced service life under the influence of rain and sun. To achieve the above purpose, the utility model provides the following technical solutions: a multifunctional vehicle for highway maintenance, including a moving part, the top of the moving part is fixedly connected to the bottom of the vehicle body, the guide groove of the vehicle body is slidably connected to the outer wall of the warning part, and the vehicle body includes a vehicle head, a vehicle box, a locking block, a box side plate, a box cover, a blocking block, a repair material barrel and a water tank.

[0005] The bottom of the warning member is fixedly connected to the top of the adjusting member, the outer wall of the adjusting member is slidably connected to the limiting groove of the vehicle body member, the inner wall of the vehicle body member is fixedly connected to the outer wall of the opening member, and the opening member is composed of a protective block, a motor, a rotating shaft, a first connecting plate, a first limiting plate, a connecting rod, a second limiting plate, a second connecting plate, a first sliding rod, a second sliding rod, a guide plate and a fixed plate.

[0006] Preferably, the moving member is composed of a fixed block, a rotating shaft and a tire, and the inner wall of the fixed block is rotatably connected to the outer wall of the rotating shaft near both ends, and tires are provided at both ends of the rotating shaft.

[0007] Preferably, the outer wall of the vehicle head is fixedly connected to the outer wall of the vehicle box, a locking block is provided on one side of the vehicle box, and the outer wall of the locking block is movably connected to the inner wall of the side panel of the box, the inner wall of the vehicle box near the top is movably connected to the outer wall of the box cover, and a pipe opening is provided at the bottom of the vehicle box, the outer wall of the blocking block is movably abutted against the pipe opening at the bottom of the vehicle box, and the inner bottom wall of the vehicle box is respectively fixedly connected to the bottom of the repair raw material barrel and the water tank, the inner wall of the vehicle box near the vehicle head is provided with a guide groove, an adjustment groove, a limit groove and a motor groove, and the bottom of the vehicle head and the vehicle box are both fixedly connected to the top of the fixed block.

[0008] Preferably, the warning member is composed of a guide rod, a warning sign and a connecting block, and the number of the limit rods is two, the top ends of the two guide rods are respectively fixedly connected to the bottom ends on both sides of the warning sign, and the bottom ends of the warning sign away from the two sides are fixedly connected to the top of the connecting block, and the outer walls of the two guide rods are slidably connected to the guide grooves of the vehicle body.

[0009] Preferably, the adjusting member includes a rotating disk, a rotating rod, a gear, a rack, a limit plate and a latch plate, and the outer wall of the rotating disk is fixedly connected to one end of the rotating rod, the outer wall of the other end of the rotating rod is fixedly connected to the inner wall of the gear, and the outer wall of the gear is meshingly connected to the outer wall of the rack, the bottom of the rack is fixedly connected to the top of the limit plate, and the outer wall of the gear is snap-connected to the outer wall of the latch plate, the gear, rack and limit plate are all arranged in the adjustment slot of the vehicle box, and the outer wall of the latch plate is slidably connected to the limit slot of the vehicle box, and the top of the rack is fixedly connected to the bottom of the connecting block.

[0010] Preferably, the inner wall of the protection block is fixedly connected to the outer wall of the motor, the output end of the motor is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft is fixedly connected to the outer wall of the first limiting plate, the first connecting plate and the second connecting plate are both provided with two rotating grooves, and the outer walls of the rotating shaft away from the two ends are fixedly connected to one of the rotating grooves of the first connecting plate, the other rotating groove of the first connecting plate is rotatably connected to the outer wall of the connecting rod away from the two ends, and one end of the connecting rod is fixedly connected to the outer wall of the second limiting plate, the outer walls of the connecting rod away from the two ends are rotatably connected to one of the rotating grooves of the second connecting plate, and the Another rotating groove of the second connecting plate is rotatably connected to the outer wall of the second sliding rod, the number of the guide plates and the fixed plates are both two, and sliding grooves are provided in the two guide plates, the two ends of the second sliding rod are respectively slidably connected to the sliding grooves of the two guide plates close to the bottom, and the sliding grooves of the two guide plates away from the bottom and the top are respectively slidably connected to the two ends of the first sliding rod, the outer walls of the first sliding rod and the second sliding rod are respectively rotatably connected to the inner walls of the two fixed plates, and the tops of the two fixed plates are fixedly connected to the bottom of the box cover by bolts, and the outer side walls of the two guide plates are fixedly connected to the inner side walls of the vehicle box.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, when it is necessary to maintain the highway, the motor is started to drive the rotating shaft to rotate, and the rotating shaft drives the first connecting plate to make a circular motion with the axis of the rotating shaft. The rotating shaft serves as the fulcrum of the lever, and the connecting rod serves as the fulcrum of another lever, so that the connecting rod and the second connecting plate form a rotatable connection point. The first sliding rod and the second sliding rod first move upward to raise the box cover. When the first sliding rod reaches the top of the sliding groove of the guide plate, the second sliding rod rotates along the sliding groove to make the box cover rotate with its own side wing as the axis, so as to open the box cover, which is convenient for people to use internal components to maintain the highway. After maintenance, the rotation direction of the motor can be changed to close the box cover, thereby reducing the influence of rain and sunlight on the internal components.

[0013] In the utility model, the rotating rod and the gear are driven to rotate by rotating the rotating disk, and the gear rotational motion is converted into the linear motion of the rack through meshing. When the rack moves in a linear direction, it drives the connecting block and the warning sign to move together, so that the warning sign is raised or lowered. When the rack moves to a predetermined position, the limit plate will contact the structure of the vehicle body, thereby preventing the rack from continuing to move. After adjusting to the required height, the latch plate is inserted to fix the position of the gear and prevent the gear from rotating. The height adjustment of the warning sign is realized, and passing vehicles are reminded to pay attention to safety during maintenance, thereby improving safety and making it convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is an exploded view of the utility model;

[0017] Figure 4 It is an exploded view of the adjusting member in the utility model;

[0018] Figure 5 It is an exploded view of the cover opening part in the utility model.

[0019] In the figure: 1. moving part; 101. fixed block; 102. rotating shaft; 103. tire; 2. vehicle body; 201. vehicle head; 202. vehicle box; 203. engaging block; 204. box side plate; 205. box cover; 206. blocking block; 207. repairing raw material barrel; 208. water tank; 3. warning part; 301. guide rod; 302. warning sign; 303. connecting block; 4. adjusting part; 401. rotating disk; 402 , rotating rod; 403, gear; 404, rack; 405, limit plate; 406, latch plate; 5, cover opening member; 501, protection block; 502, motor; 503, rotating shaft; 504, first connecting plate; 505, first limit plate; 506, connecting rod; 507, second limit plate; 508, second connecting plate; 509, first sliding rod; 510, second sliding rod; 511, guide plate; 512, fixed plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 5 The utility model provides a technical solution: a multifunctional vehicle for highway maintenance, including a moving part 1, the top of the moving part 1 is fixedly connected to the bottom of the vehicle body part 2, the guide groove of the vehicle body part 2 is slidably connected to the outer wall of the warning part 3, and the vehicle body part 2 includes a vehicle head 201, a vehicle box 202, a locking block 203, a box side plate 204, a box cover 205, a blocking block 206, a repair raw material barrel 207 and a water tank 208.

[0022] The bottom of the warning member 3 is fixedly connected to the top of the adjusting member 4, the outer wall of the adjusting member 4 is slidably connected to the limiting groove of the vehicle body member 2, the inner wall of the vehicle body member 2 is fixedly connected to the outer wall of the opening cover member 5, and the opening cover member 5 is composed of a protective block 501, a motor 502, a rotating shaft 503, a first connecting plate 504, a first limiting plate 505, a connecting rod 506, a second limiting plate 507, a second connecting plate 508, a first sliding rod 509, a second sliding rod 510, a guide plate 511 and a fixed plate 512.

[0023] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the moving part 1 is composed of a fixed block 101, a rotating shaft 102 and a tire 103, and the inner wall of the fixed block 101 is rotatably connected to the outer wall of the rotating shaft 102 near both ends, and tires 103 are provided at both ends of the rotating shaft 102. The rotating shaft 102 can rotate in the fixed block 101, and the rotating shaft 102 drives the tire 103 to rotate, so that the device moves.

[0024] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the outer wall of the front of the vehicle 201 is fixedly connected to the outer wall of the vehicle box 202, a snap-fit ​​block 203 is provided on one side of the vehicle box 202, and the outer wall of the snap-fit ​​block 203 is movably connected with the inner wall of the box side plate 204, the inner wall of the vehicle box 202 near the top is movably connected with the outer wall of the box cover 205, and a pipe opening is provided at the bottom of the vehicle box 202, the outer wall of the blocking block 206 is movably connected with the pipe opening at the bottom of the vehicle box 202, and the inner bottom wall of the vehicle box 202 is respectively fixedly connected to the bottom of the repair raw material barrel 207 and the water tank 208, and the inner wall of the vehicle box 202 near the front of the vehicle 201 is provided with a guide The front end 201 and the bottom of the vehicle box 202 are fixedly connected to the top of the fixed block 101, and the side plate 204 of the box can be put on the locking block 203. When it is necessary to transport items, the side plate 204 of the box can be removed. When the road surface needs to be repaired or filled, the repair material in the repair material barrel 207 can be injected into the ground through the pipe port set at the bottom of the vehicle box 202. When it is not needed, the pipe port can be closed with the blocking block 206. The water tank 208 can store water to irrigate the plants beside the road, which is convenient for people to use.

[0025] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the warning member 3 is composed of a guide rod 301, a warning sign 302 and a connecting block 303, and the number of the guide rods 301 is two, the top ends of the two guide rods 301 are fixedly connected to the bottom ends of the warning sign 302 on both sides, and the bottom ends of the warning sign 302 away from the two sides are fixedly connected to the top ends of the connecting blocks 303, the outer walls of the two guide rods 301 are slidably connected to the guide grooves of the vehicle body 202, the guide rods 301 play a supporting and guiding role, ensuring that the warning sign 302 remains stable during movement and moves in a specific direction, and the warning sign 302 is used to display warning information during maintenance to remind passing vehicles to pay attention to safety.

[0026] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the adjusting member 4 includes a rotating disk 401, a rotating rod 402, a gear 403, a rack 404, a limiting plate 405 and a latch plate 406, and the outer wall of the rotating disk 401 is fixedly connected to one end of the rotating rod 402, the outer wall of the other end of the rotating rod 402 is fixedly connected to the inner wall of the gear 403, and the outer wall of the gear 403 is meshedly connected to the outer wall of the rack 404, the bottom of the rack 404 is fixedly connected to the top of the limiting plate 405, and the outer wall of the gear 403 is snap-connected to the outer wall of the latch plate 406, the gear 403, the rack 404 and the limiting plate 405 are all arranged in the adjusting groove of the car box 202, and the outer wall of the latch plate 406 is slidably connected to the limiting groove of the car box 202, the top of the rack 404 is connected to the bottom of the connecting block 303 The fixed connection drives the rotating rod 402 and the gear 403 to rotate by rotating the rotating disk 401. The rotational motion of the gear 403 is converted into the linear motion of the rack 404 through meshing. When the rack 404 moves in a linear direction, it drives the connecting block 303 and the warning sign 302 to move together, so that the warning sign 302 is raised or lowered. When the rack 404 moves to a predetermined position, the limit plate 405 contacts the structure of the car box 202, thereby preventing the rack 404 from continuing to move. After adjusting to the required height, the latch plate 406 is inserted to fix the position of the gear 403 and prevent the gear 403 from rotating, thereby realizing the adjustment of the height of the warning sign 302, reminding passing vehicles to pay attention to safety during maintenance, improving safety, and facilitating people's use.

[0027] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the inner wall of the protection block 501 is fixedly connected to the outer wall of the motor 502, the output end of the motor 502 is fixedly connected to one end of the rotating shaft 503, and the other end of the rotating shaft 503 is fixedly connected to the outer side wall of the first limiting plate 505, the first connecting plate 504 and the second connecting plate 508 are both provided with two rotating grooves, and the outer wall of the rotating shaft 503 away from the two ends is fixedly connected to one of the rotating grooves of the first connecting plate 504, and the other rotating groove of the first connecting plate 504 is rotatably connected to the outer wall of the connecting rod 506 away from the two ends, and one end of the connecting rod 506 is fixedly connected to the second limiting plate 505. The outer wall of the disk 507 is fixedly connected, the outer wall of the connecting rod 506 away from the two ends is rotatably connected to one of the rotating grooves of the second connecting plate 508, and the other rotating groove of the second connecting plate 508 is rotatably connected to the outer wall of the second sliding rod 510, the number of the guide plate 511 and the fixed plate 512 are both two, and the two guide plates 511 are provided with sliding grooves, the two ends of the second sliding rod 510 are respectively slidably connected to the sliding grooves of the two guide plates 511 near the bottom, and the sliding grooves of the two guide plates 511 away from the bottom and the top are respectively slidably connected to the two ends of the first sliding rod 509 The outer walls of the first sliding rod 509 and the second sliding rod 510 are rotatably connected to the inner walls of the two fixing plates 512 respectively, and the tops of the two fixing plates 512 are fixedly connected to the bottom of the box cover 205 by bolts, and the outer walls of the two guide plates 511 are fixedly connected to the inner walls of the box 202. When the highway needs to be maintained, the rotating shaft 503 is driven to rotate by starting the motor 502, and the rotating shaft 503 drives the first connecting plate 504 to make a circular motion with the axis of the rotating shaft. The rotating shaft 503 serves as the fulcrum of the lever, and the connecting rod 506 serves as another lever The fulcrum makes the connecting rod 506 and the second connecting plate 508 form a rotatable connection point, the first sliding rod 509 and the second sliding rod 510 move upward first to raise the box cover 205, when the first sliding rod 509 reaches the top of the sliding groove of the guide plate 511, the second sliding rod 510 rotates along the sliding groove, so that the box cover 205 rotates around its own flank as the axis, so as to open the box cover, which is convenient for people to use internal components to maintain the road. After maintenance, the rotation direction of the motor 502 can be changed to close the box cover 205, reducing the impact of rain and sunlight on the internal components.

[0028] The use method and advantages of the utility model: When the multifunctional vehicle for highway maintenance is working, the working process is as follows:

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, when the highway needs to be maintained, the motor 502 is started to drive the rotating shaft 503 to rotate, and the rotating shaft 503 drives the first connecting plate 504 to make a circular motion with the axis of the rotating shaft. The rotating shaft 503 serves as the fulcrum of the lever, and the connecting rod 506 serves as the fulcrum of another lever, so that the connecting rod 506 and the second connecting plate 508 form a rotatable connection point, and the first sliding rod 509 and the second sliding rod 510 move upward first to raise the box cover 205. When the first sliding rod 509 reaches the top of the sliding groove of the guide plate 511, the second sliding rod 510 rotates along the sliding groove, so that the box cover 205 rotates with its own side wing as the axis, so that the box cover is opened, which is convenient for people to use the internal components to maintain the highway. After maintenance, the rotation direction of the motor 502 can be changed to close the box cover 205, reducing the impact of rain and sunlight on the internal components. By rotating the rotating disk 401, the rotating rod 402 and the gear 403 are driven to rotate. The rotational motion of the gear 403 is converted into the linear motion of the rack 404 through meshing. When the rack 404 moves in a linear direction, it drives the connecting block 303 and the warning sign 302 to move together, so that the warning sign 302 is raised or lowered. When the rack 404 moves to a predetermined position, the limit plate 405 contacts the structure of the car body 202, thereby preventing the rack 404 from continuing to move. After adjusting to the required height, the latch plate 406 is inserted to fix the position of the gear 403 to prevent the gear 403 from rotating, thereby realizing the adjustment of the height of the warning sign 302, reminding passing vehicles to pay attention to safety during maintenance, improving safety, and facilitating people's use.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multifunctional vehicle for highway maintenance, comprising a moving part (1), characterized in that: The top of the moving part (1) is fixedly connected to the bottom of the vehicle body part (2), the guide groove of the vehicle body part (2) is slidably connected to the outer wall of the warning part (3), and the vehicle body part (2) comprises a vehicle head (201), a vehicle box (202), a locking block (203), a box side plate (204), a box cover (205), a blocking block (206), a repair raw material barrel (207) and a water tank (208); The bottom of the warning member (3) is fixedly connected to the top of the adjusting member (4), the outer wall of the adjusting member (4) is slidably connected to the limiting groove of the vehicle body member (2), the inner wall of the vehicle body member (2) is fixedly connected to the outer wall of the cover opening member (5), and the cover opening member (5) is composed of a protection block (501), a motor (502), a rotating shaft (503), a first connecting plate (504), a first limiting plate (505), a connecting rod (506), a second limiting plate (507), a second connecting plate (508), a first sliding rod (509), a second sliding rod (510), a guide plate (511) and a fixed plate (512).

2. A multifunctional vehicle for highway maintenance according to claim 1, characterized in that: The moving member (1) is composed of a fixed block (101), a rotating shaft (102) and a tire (103), and the inner wall of the fixed block (101) is rotatably connected to the outer wall of the rotating shaft (102) near both ends, and tires (103) are provided at both ends of the rotating shaft (102).

3. A multifunctional vehicle for highway maintenance according to claim 2, characterized in that: The outer wall of the vehicle head (201) is fixedly connected to the outer wall of the vehicle box (202); a locking block (203) is provided on one side of the vehicle box (202); and the outer wall of the locking block (203) is movably connected to the inner wall of the box side plate (204); the inner wall of the vehicle box (202) near the top is movably connected to the outer wall of the box cover (205); and a pipe opening is provided at the bottom of the vehicle box (202); the outer wall of the blocking block (206) is movably abutted against the pipe opening at the bottom of the vehicle box (202); and the inner bottom wall of the vehicle box (202) is respectively fixedly connected to the bottom of the repair material barrel (207) and the bottom of the water tank (208); the inner wall of the vehicle box (202) near the vehicle head (201) is provided with a guide groove, an adjustment groove, a limit groove and a motor groove; and the bottoms of the vehicle head (201) and the vehicle box (202) are both fixedly connected to the top of the fixed block (101).

4. A multifunctional vehicle for highway maintenance according to claim 3, characterized in that: The warning member (3) is composed of a guide rod (301), a warning sign (302) and a connecting block (303), and the number of the guide rods (301) is two, the top ends of the two guide rods (301) are respectively fixedly connected to the bottom ends of the warning sign (302) on both sides, and the bottom ends of the warning sign (302) away from both sides are fixedly connected to the top ends of the connecting blocks (303), and the outer walls of the two guide rods (301) are both slidably connected to the guide grooves of the vehicle box (202).

5. A multifunctional vehicle for highway maintenance according to claim 4, characterized in that: The adjusting member (4) comprises a rotating disk (401), a rotating rod (402), a gear (403), a rack (404), a limiting plate (405) and a latch plate (406), wherein the outer wall of the rotating disk (401) is fixedly connected to one end of the rotating rod (402), the outer wall of the other end of the rotating rod (402) is fixedly connected to the inner wall of the gear (403), and the outer wall of the gear (403) is meshedly connected to the outer wall of the rack (404), and the gear (403) is meshedly connected to the outer wall of the rack (404). The bottom of the rack (404) is fixedly connected to the top of the limit plate (405), and the outer wall of the gear (403) is snap-connected to the outer wall of the latch plate (406); the gear (403), the rack (404) and the limit plate (405) are all arranged in the adjustment groove of the vehicle box (202), and the outer wall of the latch plate (406) is slidably connected to the limit groove of the vehicle box (202), and the top of the rack (404) is fixedly connected to the bottom of the connecting block (303).

6. The multifunctional vehicle for highway maintenance according to claim 3, characterized in that: The inner wall of the protection block (501) is fixedly connected to the outer wall of the motor (502), the output end of the motor (502) is fixedly connected to one end of the rotating shaft (503), and the other end of the rotating shaft (503) is fixedly connected to the outer wall of the first limiting plate (505), the first connecting plate (504) and the second connecting plate (508) are both provided with two rotating grooves, and the outer wall of the rotating shaft (503) away from the two ends is fixedly connected to one of the rotating grooves of the first connecting plate (504), the other rotating groove of the first connecting plate (504) is rotatably connected to the outer wall of the connecting rod (506) away from the two ends, and one end of the connecting rod (506) is fixedly connected to the outer wall of the second limiting plate (507), the outer wall of the connecting rod (506) away from the two ends is rotatably connected to one of the rotating grooves of the second connecting plate (508), and the second connecting plate (508) is rotatably connected to the outer wall of the second limiting plate (507). Another rotating groove of the connecting plate (508) is rotatably connected to the outer wall of the second sliding rod (510), the number of the guide plate (511) and the fixed plate (512) are both two, and the two guide plates (511) are each provided with a sliding groove, the two ends of the second sliding rod (510) are respectively slidably connected to the sliding grooves of the two guide plates (511) close to the bottom, and the sliding grooves of the two guide plates (511) away from the bottom and the top are respectively slidably connected to the two ends of the first sliding rod (509), the outer walls of the first sliding rod (509) and the second sliding rod (510) are respectively rotatably connected to the inner walls of the two fixed plates (512), and the tops of the two fixed plates (512) are fixedly connected to the bottom of the box cover (205) by bolts, and the outer side walls of the two guide plates (511) are fixedly connected to the inner side walls of the vehicle box (202).

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