A photovoltaic module for the roof of a box semi-trailer

Abstract

The invention discloses a photovoltaic assembly on the roof of a box-type semi-trailer, comprising a mounting foot, an angle adjustment mechanism, a lifting adjustment mechanism and a self-cleaning mechanism, wherein the top of the mounting foot is fixedly connected to a body, wherein the angle adjustment mechanism comprises a motor, and the motor is fixedly connected to the middle of the bottom of the body. In the invention, when the adjustment bottom plate is folded, the adjustment bottom plate is tilted and pressed down, so that the airbag at the bottom of the adjustment bottom plate contacts the body, so that the air in the airbag is squeezed, and at the same time, the air in the airbag is introduced into the adjustment box through a connecting pipe rack, so that the pressure at the spring is increased, and then the spring is stretched, when the spring is stretched, the piston plate pushes the rotating rod to move through the moving plate, when the rotating rod moves, the slider slides in the limiting slide groove, and at the same time, the cleaning roller on the rotating rod contacts the top of the double-sided photovoltaic panel, rotates when the cleaning roller contacts the top of the double-sided photovoltaic panel, and cleans the top of the double-sided photovoltaic panel during rotation, so that the device can perform self-cleaning work when folded.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic modules, in particular to a photovoltaic module on the roof of a box-type semi-trailer. Background Art

[0002] The roof photovoltaic module of a van semi-trailer is a device that installs solar photovoltaic panels on the roof of a van semi-trailer. This module usually consists of multiple photovoltaic panels and can be installed on the top or side of the semi-trailer to better utilize solar energy resources.

[0003] Since photovoltaic modules are generally installed on the top of semi-trailers, they cannot pass through some roads with height restrictions, and the driving route of the semi-trailers needs to be changed. This is a fatal problem in logistics transportation. The delay will reduce the transportation efficiency. At the same time, since semi-trailers often travel on the road, the dust in the air is flipped to the top of the road when the vehicle moves, which can easily cause dust to accumulate on the surface of the photovoltaic panels, reducing the working efficiency of the photovoltaic panels. Improvements need to be made to this problem.

[0004] Therefore, it is necessary to design a photovoltaic module on the roof of a van-type semi-trailer that is highly practical and does not affect the working efficiency of the photovoltaic panels without affecting vehicle transportation. Summary of the invention

[0005] The object of the present invention is to provide a photovoltaic assembly on the roof of a box-type semi-trailer to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a photovoltaic assembly on the roof of a box-type semi-trailer, comprising a mounting foot, an angle adjustment mechanism, a lifting adjustment mechanism, a self-cleaning mechanism and a double-sided photovoltaic panel, the top of the mounting foot being fixedly connected to an organism, and the double-sided photovoltaic panel being arranged on the top of the self-cleaning mechanism.

[0007] Wherein, the angle adjustment mechanism comprises:

[0008] The motor is fixedly connected to the middle of the bottom of the machine body. The motor has an output shaft, the motor output shaft is fixedly connected to a driving gear, the inner wall of the machine body is fixedly connected to an auxiliary gear ring, the outer side of the driving gear is meshed with a driven gear, the middle of the driven gear is fixedly connected to a rotating rod, and the top of the rotating rod is rotatably connected to a rotating base.

[0009] According to the above technical solution, the lifting and adjusting mechanism includes a fixed frame, an adjusting base plate, a fixed plate, a support frame 1, a telescopic rod, a sliding member, and a guide pulley. The fixed frame is fixedly connected to the right side of the rotating base, the adjusting base plate is rotatably connected to the middle of the fixed frame, the fixed plate is fixedly connected to the left side of the rotating base, the support frame 1 is fixedly connected to the middle of the right side of the fixed plate, the telescopic rod is rotatably connected to the middle of the support frame 1, the guide pulley is fixedly connected to the bottom of the adjusting base plate, and the sliding member is slidably connected to the inner side of the guide pulley.

[0010] According to the above technical scheme, the self-cleaning mechanism includes a protective shell, an adjusting box, a spring, a piston plate, a movable plate, a rotating rod, a cleaning roller, a slider, a limiting slide groove, an airbag, and a connecting pipe rack. The protective shell is fixedly connected to the top of the adjusting base plate, the double-sided photovoltaic panel is fixedly connected to the middle of the bottom of the protective shell, the adjusting box is fixedly connected to the left inner wall of the protective shell, the spring is fixedly connected to the left inner wall of the adjusting box, the piston plate is fixedly connected to the right end of the spring, the movable plate is fixedly connected to the right side of the piston plate, the rotating rod is rotatably connected to the right side of the movable plate, the cleaning roller is fixedly connected to the middle of the rotating rod, the slider is rotatably connected to the front and rear ends of the cleaning roller, the limiting slide groove is opened in the middle of the front and back of the protective shell, the airbag is fixedly connected to the bottom of the adjusting base plate, and the connecting pipe rack is fixedly connected to the top of the airbag.

[0011] According to the above technical solution, the motor output shaft passes through the bottom of the body and extends into the body to be fixedly connected to the driving gear. The back of the driven gear meshes with the inner side of the auxiliary gear ring. A circular groove is provided on the top of the body to accommodate the sliding of the rotating rod, thereby ensuring that the rotating rod can rotate normally.

[0012] According to the above technical solution, the telescopic rod is rotated away from one side of the support frame and connected to the middle part of the sliding member. Pulleys are provided on the front and back sides of the sliding member. The sliding member is slidably connected to the guide pulley through the pulleys, ensuring that the sliding member is more stable when sliding in the guide pulley.

[0013] According to the above technical solution, drainage holes are provided on the front and back of the protective shell, and the drainage holes are connected to the limiting slide groove. Rainwater accumulated in the protective shell can be discharged by setting the drainage holes.

[0014] According to the above technical solution, the bottom of the connecting pipe rack passes through the top of the adjusting base plate and extends to the bottom of the adjusting base plate to be fixedly connected to the airbag. The top of the airbag passes through the bottom inner wall of the protective shell and is fixedly connected to the left side of the adjusting box. The airbag is connected to the left side of the adjusting box through the connecting pipe rack, so that the air in the airbag can be sent into the adjusting box through the connecting pipe rack.

[0015] According to the above technical solution, the self-cleaning mechanism also includes a partition block, a support plate, an air storage block, a jet pipe and a transmission pipe, the partition block is fixedly connected to the middle part of the limiting slide groove, the support plate is fixedly connected to the top of the front side of the partition block, the air storage block is fixedly connected to the left side of the partition block, the transmission pipe is fixedly connected to the right side of the front side of the air storage block, the jet pipe is fixedly connected to the end of the transmission pipe away from the air storage block, and the jet pipe is fixedly connected to the bottom of the support plate.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: in order to avoid the solar photovoltaic assembly on the top of the van semi-trailer vehicle from being unable to pass normally due to height restrictions, the present invention needs to perform folding work, at this time, the telescopic rod is opened, the telescopic rod is contracted during operation, and the sliding member is pulled to slide in the guide pulley, and at the same time, the right side of the adjusting bottom plate is rotatably connected to the fixing frame, so that the adjusting bottom plate moves down and reduces the height of the adjusting bottom plate, so that the overall height of the device can be adjusted, avoiding the van truck from being unable to pass normally due to height restrictions, and at the same time, by setting a lifting and lowering adjustment mechanism, the slope of the adjusting bottom plate can be adjusted, and it can be adjusted according to the position of the sun and the light intensity;

[0017] When it is necessary to perform rotation adjustment according to the position of the sun, the motor is controlled to work, and the driving gear is controlled to rotate when the motor is working, so that when the driving gear rotates, the driven gear meshing with the driving gear rotates outside the driving gear, and at the same time, when the driven gear rotates, the rotating rod rotates at the bottom of the rotating base, and the rotating base is driven to rotate at the same time, so that the position of the adjusting base plate can be adjusted, and the position of the double-sided photovoltaic panel on the top of the adjusting base plate can be changed at the same time;

[0018] When the adjusting bottom plate is folded, the adjusting bottom plate is tilted and pressed down, so that the airbag at the bottom of the adjusting bottom plate contacts the machine body, so that the air in the airbag is squeezed, and at the same time, the air in the airbag is introduced into the adjusting box through the connecting pipe rack, so that the pressure at the spring is increased, and then the spring is stretched. When the spring is stretched, the piston plate pushes the rotating rod to move through the moving plate. When the rotating rod moves, the slider slides in the limiting slide groove, and at the same time, the cleaning roller on the rotating rod contacts the top of the double-sided photovoltaic panel. The cleaning roller rotates when it contacts the top of the double-sided photovoltaic panel, and cleans the top of the double-sided photovoltaic panel during rotation, so that the device can perform self-cleaning when folded. When it rains, rainwater accumulated at the double-sided photovoltaic panel is discharged through the drainage holes arranged on the front and back of the protective shell, so as to avoid rainwater accumulation and ensure the normal operation of the double-sided photovoltaic panel.

[0019] By setting double-sided photovoltaic panels on the roof of the van semi-trailer, both the front and back sides can receive sunlight, and the sunlight diffusely reflected by the roof of the van semi-trailer can be received, thereby increasing the utilization rate of sunlight and improving the power generation efficiency. Due to the design of the double-sided photovoltaic panel, when one side is blocked by a shadow, the other side can still receive sunlight normally. At the same time, since both sides can receive sunlight, the impact of dust on the efficiency of the photovoltaic panel is also reduced. Secondly, the design of the double-sided photovoltaic panel can reduce direct sunlight and heating, thereby reducing the temperature of the photovoltaic panel and improving the conversion efficiency;

[0020] When the slider moves, it moves and squeezes the air storage block. At this time, the cleaning roller moves close to the jet pipe, so that when the air storage block is squeezed, the air in the air storage block is introduced into the jet pipe through the transmission pipe, and is ejected from the jet pipe at the same time, causing gas impact on the surface of the cleaning roller, thereby preventing dust from adhering to the surface gaps of the cleaning roller as the working time increases, thereby avoiding a reduction in cleaning efficiency and ensuring cleaning quality. At the same time, since the jet pipe jets downward, the top surface of the double-sided photovoltaic panel can be jetted to blow away the dust accumulated on the top of the double-sided photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is an exploded schematic diagram of the driving gear of the present invention;

[0024] Figure 3 It is a schematic diagram of the fixing frame of the present invention;

[0025] Figure 4 yes Figure 3 The enlarged schematic diagram at A in the middle;

[0026] Figure 5 It is a schematic diagram of the sliding member of the present invention;

[0027] Figure 6 This is a schematic diagram of the connection pipe rack of the present invention;

[0028] Figure 7 is a schematic diagram of the interior of the regulating box of the present invention;

[0029] Figure 8 yes Figure 7 The enlarged schematic diagram of point B in the middle;

[0030] Fig. 9 It is a schematic diagram of the transmission pipeline of the present invention.

[0031] In the figure: 1. mounting foot; 2. machine body; 3. angle adjustment mechanism; 301. motor; 302. driving gear; 303. auxiliary gear ring; 304. driven gear; 305. rotating rod; 306. rotating base; 4. lifting adjustment mechanism; 401. fixing frame; 402. adjusting bottom plate; 403. fixing plate; 404. supporting frame 1; 405. telescopic rod; 406. sliding member; 407. guide pulley; 5. self-cleaning mechanism; 501. protective shell; 503. adjusting box; 504. spring; 505. piston plate; 506. moving plate; 507. rotating rod; 508. cleaning roller; 509. slider; 510. limiting slide groove; 511. air bag; 512. connecting pipe rack; 512. Support plate; 513. Gas storage block; 514. Jet pipe; 515. Transmission pipe; 516. Partition block; 6. Double-sided photovoltaic panel. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-5 The present invention provides a technical solution: a photovoltaic assembly on the roof of a box-type semi-trailer, including a mounting foot 1, an angle adjustment mechanism 3, a lifting adjustment mechanism 4, a self-cleaning mechanism 5 and a double-sided photovoltaic panel 6. The top of the mounting foot 1 is fixedly connected to an organism 2, and the double-sided photovoltaic panel 6 is arranged on the top of the self-cleaning mechanism 5.

[0034] Wherein, the angle adjustment mechanism 3 comprises:

[0035] The motor 301 is fixedly connected to the middle of the bottom of the body 2. The motor 301 has an output shaft. The output shaft of the motor 301 is fixedly connected to a driving gear 302. An auxiliary gear ring 303 is fixedly connected to the inner wall of the body 2. A driven gear 304 is meshed on the outer side of the driving gear 302. A rotating rod 305 is fixedly connected to the middle of the driven gear 304. A rotating base 306 is rotatably connected to the top of the rotating rod 305.

[0036] The lifting and adjusting mechanism 4 includes a fixed frame 401, an adjusting base plate 402, a fixed plate 403, a support frame 1 404, a telescopic rod 405, a sliding member 406, and a guide pulley 407. The fixed frame 401 is fixedly connected to the right side of the rotating base 306, the adjusting base plate 402 is rotatably connected to the middle of the fixed frame 401, the fixed plate 403 is fixedly connected to the left side of the rotating base 306, the support frame 1 404 is fixedly connected to the middle of the right side of the fixed plate 403, the telescopic rod 405 is rotatably connected to the middle of the support frame 1 404, the guide pulley 407 is fixedly connected to the bottom of the adjusting base plate 402, and the sliding member 406 is slidably connected to the inner side of the guide pulley 407;

[0037] The output shaft of the motor 301 passes through the bottom of the body 2 and extends into the body 2 to be fixedly connected to the driving gear 302. The back of the driven gear 304 meshes with the inner side of the auxiliary gear ring 303. A circular groove is provided on the top of the body 2 to accommodate the sliding of the rotating rod 305 to ensure that the rotating rod 305 can rotate normally.

[0038] The telescopic rod 405 is rotatably connected to the middle of the sliding member 406 away from the support frame 404. Pulleys are provided on the front and back of the sliding member 406. The sliding member 406 is slidably connected to the guide pulley 407 through the pulleys to ensure that the sliding member 406 is more stable when sliding in the guide pulley 407.

[0039] In order to avoid the height limit causing the solar photovoltaic components on the top of the box-type semi-trailer to be unable to pass normally, it is necessary to perform folding work. At this time, the telescopic rod 405 is opened, and the telescopic rod 405 contracts during operation, and pulls the sliding member 406 to slide in the guide pulley 407. At the same time, the right side of the adjusting bottom plate 402 is rotatably connected to the fixed frame 401, so that the adjusting bottom plate 402 moves down and reduces the height of the adjusting bottom plate 402, so that the overall height of the device can be adjusted to avoid the box truck being unable to pass normally due to the height limit. At the same time, by setting the lifting adjustment mechanism 4, the slope of the adjusting bottom plate 402 can be adjusted, and it can be adjusted according to the position of the sun and the light intensity.

[0040] When rotation adjustment is required according to the position of the sun, the motor 301 is controlled to work. When the motor 301 is working, the driving gear 302 is controlled to rotate. When the driving gear 302 rotates, the driven gear 304 meshing with the driving gear 302 rotates on the outside of the driving gear 302. At the same time, when the driven gear 304 rotates, the rotating rod 305 rotates at the bottom of the rotating base 306, and at the same time, the rotating base 306 is driven to rotate, so that the position of the adjusting base plate 402 can be adjusted, and the position of the double-sided photovoltaic panel 6 on the top of the adjusting base plate 402 can be changed.

[0041] See also Figure 6-9The present invention provides a technical solution: the self-cleaning mechanism 5 includes a protective shell 501, an adjustment box 503, a spring 504, a piston plate 505, a movable plate 506, a rotating rod 507, a cleaning roller 508, a slider 509, a limiting slide 510, an airbag 511, and a connecting pipe rack 512. The protective shell 501 is fixedly connected to the top of the adjustment bottom plate 402, the double-sided photovoltaic panel 6 is fixedly connected to the middle of the bottom of the protective shell 501, the adjustment box 503 is fixedly connected to the left inner wall of the protective shell 501, and the spring 504 is fixedly connected to the adjustment On the left inner wall of the section box 503, the piston plate 505 is fixedly connected to the right end of the spring 504, the movable plate 506 is fixedly connected to the right side of the piston plate 505, the rotating rod 507 is rotatably connected to the right side of the movable plate 506, the cleaning roller 508 is fixedly connected to the middle of the rotating rod 507, the slider 509 is rotatably connected to the front and rear ends of the cleaning roller 508, the limiting slide groove 510 is opened in the middle of the front and back of the protective shell 501, the airbag 511 is fixedly connected to the bottom of the adjusting base plate 402, and the connecting pipe rack 512 is fixedly connected to the top of the airbag 511.

[0042] Drain holes are provided on the front and back of the protective shell 501 , and the drainage holes are connected to the limiting slide groove 510 . Rainwater accumulated in the protective shell 501 can be discharged by providing the drainage holes.

[0043] The bottom of the connecting pipe rack 512 passes through the top of the adjusting base plate 402 and extends to the bottom of the adjusting base plate 402 to be fixedly connected to the airbag 511. The top of the airbag 511 passes through the bottom inner wall of the protective shell 501 and is fixedly connected to the left side of the adjusting box 503. The airbag 511 is connected to the left side of the adjusting box 503 through the connecting pipe rack 512, so that the air in the airbag 511 can be sent into the adjusting box 503 through the connecting pipe rack 512.

[0044] The self-cleaning mechanism 5 also includes a partition block 516, a support plate 512, an air storage block 513, an injection pipe 514 and a transmission pipe 515. The partition block 516 is fixedly connected to the middle part of the limiting slide groove 510, the support plate 512 is fixedly connected to the top of the front side of the partition block 516, the air storage block 513 is fixedly connected to the left side of the partition block 516, the transmission pipe 515 is fixedly connected to the right side of the front side of the air storage block 513, the injection pipe 514 is fixedly connected to the end of the transmission pipe 515 away from the air storage block 513, and the injection pipe 514 is fixedly connected to the bottom of the support plate 512.

[0045] When the slider 509 moves, the slider 509 moves and squeezes the air storage block 513. At this time, the cleaning roller 508 moves close to the jet pipe 514, so that when the air storage block 513 is squeezed, the air in the air storage block 513 is introduced into the jet pipe 504 through the transmission pipe 505, and is ejected from the jet pipe 504 at the same time, and performs gas impact on the surface of the cleaning roller 508, so as to prevent dust from adhering to the surface gaps of the cleaning roller 508 as the working time increases, avoid reducing the cleaning efficiency, and ensure the cleaning quality. At the same time, since the jet pipe 504 sprays air downward, the top surface of the double-sided photovoltaic panel 6 can be sprayed to blow away the dust accumulated on the top of the double-sided photovoltaic panel 6.

[0046] When the adjustment bottom plate 402 is folded, the adjustment bottom plate 402 is tilted and pressed down, so that the airbag 511 at the bottom of the adjustment bottom plate 402 contacts the body 2, so that the air in the airbag 511 is squeezed, and at the same time, the air in the airbag 511 is introduced into the adjustment box 503 through the connecting pipe frame 512, so that the pressure at the spring 504 is increased, and then the spring 504 is stretched. When the spring 504 is stretched, the piston plate 505 pushes the rotating rod 507 to move through the moving plate 506. When the rotating rod 507 moves, the slider 509 slides in the limiting slide groove 510, and at the same time, the cleaning roller 508 on the rotating rod 507 contacts the top of the double-sided photovoltaic panel 6, and rotates when the cleaning roller 508 contacts the top of the double-sided photovoltaic panel 6. During the rotation, the top of the double-sided photovoltaic panel 6 is cleaned, so that the device can perform self-cleaning when folded. When it rains, rainwater accumulated on the double-sided photovoltaic panel 6 is discharged through the drainage holes provided on the front and back of the protective shell 501, so as to avoid rainwater accumulation and ensure the normal operation of the double-sided photovoltaic panel 6.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic module on the roof of a van semi-trailer, characterized by: It comprises a mounting foot (1), an angle adjustment mechanism (3), a lifting adjustment mechanism (4), a self-cleaning mechanism (5) and a double-sided photovoltaic panel (6), wherein the top of the mounting foot (1) is fixedly connected to the body (2), and the double-sided photovoltaic panel (6) is arranged on the top of the self-cleaning mechanism (5); Wherein, the angle adjustment mechanism (3) comprises: A motor (301), the motor (301) is fixedly connected to the middle of the bottom of the machine body (2), the motor (301) has an output shaft, the output shaft of the motor (301) is fixedly connected to a driving gear (302), an auxiliary gear ring (303) is fixedly connected to the inner wall of the machine body (2), a driven gear (304) is meshed on the outer side of the driving gear (302), a rotating rod (305) is fixedly connected to the middle of the driven gear (304), and a rotating base (306) is rotatably connected to the top of the rotating rod (305); The lifting and adjusting mechanism (4) comprises a fixed frame (401), an adjusting base plate (402), a fixed plate (403), a supporting frame 1 (404), a telescopic rod (405), a sliding member (406), and a guide pulley (407), wherein the fixed frame (401) is fixedly connected to the right side of the rotating base (306), the adjusting base plate (402) is rotatably connected to the middle of the fixed frame (401), the fixed plate (403) is fixedly connected to the left side of the rotating base (306), the supporting frame 1 (404) is fixedly connected to the middle of the right side of the fixed plate (403), the telescopic rod (405) is rotatably connected to the middle of the supporting frame 1 (404), the guide pulley (407) is fixedly connected to the bottom of the adjusting base plate (402), and the sliding member (406) is slidably connected to the inner side of the guide pulley (407); The self-cleaning mechanism (5) comprises a protective shell (501), an adjustment box (503), a spring (504), a piston plate (505), a movable plate (506), a rotating rod (507), a cleaning roller (508), a slider (509), a limiting slide groove (510), an air bag (511), and a connecting pipe rack (512); the protective shell (501) is fixedly connected to the top of the adjustment bottom plate (402); the double-sided photovoltaic panel (6) is fixedly connected to the middle of the bottom of the protective shell (501); the adjustment box (503) is fixedly connected to the left inner wall of the protective shell (501); and the spring (504) is fixedly connected to the adjustment box (503). ) on the left inner wall, the piston plate (505) is fixedly connected to the right end of the spring (504), the movable plate (506) is fixedly connected to the right side of the piston plate (505), the rotating rod (507) is rotatably connected to the right side of the movable plate (506), the cleaning roller (508) is fixedly connected to the middle of the rotating rod (507), the slider (509) is rotatably connected to the front and rear ends of the cleaning roller (508), the limiting slide groove (510) is opened in the middle of the front and back of the protective shell (501), the airbag (511) is fixedly connected to the bottom of the adjustment base plate (402), and the connecting pipe frame (512) is fixedly connected to the top of the airbag (511).

2. The photovoltaic module on the roof of a van-type semitrailer according to claim 1, characterized in that: The output shaft of the motor (301) passes through the bottom of the machine body (2) and extends into the machine body (2) to be fixedly connected to the driving gear (302); the back of the driven gear (304) meshes with the inner side of the auxiliary gear ring (303); and a circular groove for accommodating the sliding of the rotating rod (305) is provided on the top of the machine body (2).

3. The photovoltaic module on the roof of a van-type semitrailer according to claim 2, characterized in that: The telescopic rod (405) is rotatably connected to the middle of a sliding member (406) away from one side of the support frame (404). Pulleys are provided on the front and back sides of the sliding member (406). The sliding member (406) is slidably connected to a guide pulley (407) via the pulleys.

4. The photovoltaic module on the roof of a van-type semitrailer according to claim 3, characterized in that: The protective housing (501) is provided with drainage holes on the front and back sides, and the drainage holes are connected to the limiting sliding groove (510).

5. The photovoltaic module on the roof of a van-type semitrailer according to claim 4, characterized in that: The bottom of the connecting pipe frame (512) passes through the top of the adjusting bottom plate (402) and extends to the bottom of the adjusting bottom plate (402) to be fixedly connected to the airbag (511); the top of the airbag (511) passes through the bottom inner wall of the protective shell (501) to be fixedly connected to the left side of the adjusting box (503); and the airbag (511) is connected to the left side of the adjusting box (503) through the connecting pipe frame (512).

6. The photovoltaic assembly on the roof of a van-type semitrailer according to claim 5, characterized in that: The self-cleaning mechanism (5) further comprises a partition block (516), a support plate (512), an air storage block (513), an air jet pipe (514) and a transmission pipe (515); the partition block (516) is fixedly connected to the middle portion of the limiting slide groove (510); the support plate (512) is fixedly connected to the top of the front face of the partition block (516); the air storage block (513) is fixedly connected to the left side of the partition block (516); the transmission pipe (515) is fixedly connected to the right side of the front face of the air storage block (513); the air jet pipe (514) is fixedly connected to an end of the transmission pipe (515) away from the air storage block (513); and the air jet pipe (514) is fixedly connected to the bottom of the support plate (512).

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