Photovoltaic panel crack detection device

Abstract

The invention is suitable for the technical field of photovoltaic panel detection, and provides a photovoltaic panel crack detection device, which comprises a rack, and also comprises a conveying module, the conveying module comprises rotating rods and a driving unit, each rotating rod is provided with two positioning columns, and each positioning column comprises a lap joint column and a limiting column; the adjusting module comprises a mounting frame, a transverse moving rod is arranged below the mounting frame, the transverse moving rod is connected with a connecting plate through a connecting rod, and the limiting columns on the same side are rotationally mounted on the same connecting plate; and the detection module comprises a mounting plate, an industrial camera is mounted at the bottom of the mounting plate, two lifting connecting rods are symmetrically arranged at the top of the mounting plate, the ends, away from the mounting plate, of the lifting connecting rods are hinged to an adjusting plate, and the adjusting plate is connected with the transverse moving rod. The device can be suitable for crack detection of photovoltaic panels of various sizes, the application range is wide, the number of invalid pictures in the obtained detection images is small, and the detection precision is high.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic panel detection, and in particular relates to a photovoltaic panel crack detection device. Background Art

[0002] During the manufacturing, transportation, installation or use of photovoltaic panels, cracks may occur in photovoltaic panels due to various factors. Although they are sometimes difficult to detect with the naked eye, they will have a serious impact on the performance and life of photovoltaic panels. Photovoltaic panel crack detection is an important part of ensuring the quality and performance of photovoltaic panels, and is crucial to maintaining the overall efficiency and reliability of photovoltaic systems.

[0003] The photovoltaic panel crack detection device is mainly based on non-contact optical principles, using high-resolution cameras and image processing technology to conduct a comprehensive scan of the photovoltaic panel, and identify potential crack locations and features through image analysis. In the prior art, the cameras in such detection devices are mostly installed at a fixed height, and the photovoltaic panel to be tested is passed under the camera during detection to collect images. However, due to the different sizes of different photovoltaic panels, it may be impossible to completely capture the photovoltaic panel if only shooting from the same height, and there may also be a large number of invalid images in the captured image (images other than the photovoltaic panel), which will increase the complexity of the subsequent image processing and is not conducive to detection. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a photovoltaic panel crack detection device, aiming to solve the problems raised in the above background technology.

[0005] The embodiment of the present invention is implemented as follows: a photovoltaic panel crack detection device includes a frame and further includes:

[0006] A conveying module, wherein the conveying module comprises a plurality of rotating rods installed side by side on a frame, and a driving unit for driving the rotating rods to rotate simultaneously is also installed on the frame, and two positioning columns are symmetrically arranged on each rotating rod, and the positioning columns comprise a lap column slidably installed on the rotating rod, and the lap column is connected to the rotating rod by a sliding key, and a limiting column is arranged on one side of the lap column close to the end of the rotating rod;

[0007] An adjustment module, wherein the adjustment module comprises a mounting frame mounted on the frame, two guide seats are arranged below the mounting frame, transverse rods are slidably mounted in the two guide seats, and a reciprocating unit for driving the two transverse rods to move towards or in opposite directions at the same time is also installed on the mounting frame, the two transverse rods are connected to a connecting rod, the bottoms of the two connecting rods are respectively provided with a connecting plate, and the limiting columns in each positioning column located on the same side are rotatably mounted on the same connecting plate;

[0008] The detection module includes a mounting plate arranged below the transverse rod, an industrial camera is installed at the bottom of the mounting plate, two lifting links are symmetrically arranged at the top of the mounting plate, one end of each lifting link is hinged to the mounting plate, one end of the lifting link away from the mounting plate is hinged to the adjustment plate, and the two adjustment plates are respectively connected to the two transverse rods.

[0009] According to a further technical solution, the driving unit comprises a first driving motor installed at the bottom of the frame, and an output end of the first driving motor is simultaneously connected to each rotating rod through a pulley and belt mechanism.

[0010] According to a further technical solution, the reciprocating unit includes a second driving motor installed on a mounting frame, an adjusting gear is installed at the output end of the second driving motor, a rack is respectively arranged on both sides of the adjusting gear, both racks are meshed with the adjusting gear, and the two racks are respectively connected to two transverse rods.

[0011] According to a further technical solution, a cleaning module for cleaning the surface of the photovoltaic panel to be tested is provided between the two connecting plates.

[0012] A further technical solution is that the cleaning module includes two mounting seats, and the two mounting seats are respectively mounted on two connecting plates, and a lifting plate and a telescopic plate are provided in the mounting seat, the lifting plate is arranged above the telescopic plate, and the lifting plate is installed in the mounting seat along the vertical direction, and the lifting plates in the two mounting seats are connected to each other by a telescopic cleaning brush rod, the telescopic plate is installed in the mounting seat along the axial sliding of the rotating rod, and the telescopic plate is connected to the inside of the mounting seat through a reset spring, an inclined surface is provided on one side of the telescopic plate close to the middle of the rotating rod, and a synchronous connecting rod is also hinged on the telescopic plate, and the end of the synchronous connecting rod away from the telescopic plate is hinged to the bottom of the lifting plate.

[0013] According to a further technical solution, the distance between the two lifting plates is the same as the distance between the two limiting columns on the same rotating rod.

[0014] A further technical solution is that the cleaning brush rod includes a first brush rod and a second brush rod, one end of the second brush rod is inserted into the end of the first brush rod, one end of the second brush rod away from the first brush rod is connected to a lifting plate, one end of the first brush rod away from the second brush rod is connected to another lifting plate, and cleaning sponges are provided at the bottom of the first brush rod and the second brush rod.

[0015] A photovoltaic panel crack detection device provided by an embodiment of the present invention, when in use, first adjusts the spacing between the positioning columns on both sides according to the size of the photovoltaic panel to be tested. Specifically, start the reciprocating unit, and drive the two transverse rods to slide toward each other along the corresponding guide seats respectively through the reciprocating unit. The transverse rod can drive the connecting plate to move synchronously through the connecting rod, so as to adjust the spacing between the two connecting plates. The connecting plate can drive the positioning columns connected thereto to move synchronously, so as to adjust the spacing between the positioning columns on both sides, so that the spacing between the two limit columns is the same as the width of the photovoltaic panel to be tested (here, the width direction of the photovoltaic panel to be tested must be the same as the axial direction of the rotating rod). Place the photovoltaic panel to be tested on one end of the conveying module, and limit the photovoltaic panel to be tested by the limit columns on both sides, so that the photovoltaic panel to be tested moves linearly in the conveying module. At the same time, the lateral movement rod can drive the adjustment plate to move synchronously, and the adjustment plate can drive the mounting plate to move up and down in the vertical direction through the lifting connecting rod. When the two lateral movement rods move toward each other, the mounting plate will move downward, and when the two lateral movement rods move away from each other, the mounting plate will move upward, and the mounting plate can drive the industrial camera at its bottom to move synchronously. When the width of the photovoltaic panel to be tested is large, the spacing between the two positioning columns will also be large. At this time, the industrial camera will be relatively high, and the picture taken downward is larger; when the width of the photovoltaic panel to be tested is small, the industrial camera will be relatively low, and the picture taken downward is smaller. Through the above setting, the size of the picture taken by the industrial camera in the direction along the axial direction of the rotating rod can be consistent with the width of the photovoltaic panel to be tested, thereby effectively reducing the invalid images in the shooting picture and reducing the complexity of post-processing. The device can be applied to crack detection of photovoltaic panels of various sizes, has a wide range of applications, and can clean the photovoltaic panel to be tested to reduce the influence of dust and impurities on the detection. The final detection image has few invalid pictures and high detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a photovoltaic panel crack detection device provided by an embodiment of the present invention;

[0017] Figure 2 A schematic structural diagram of another viewing angle of a photovoltaic panel crack detection device provided by an embodiment of the present invention;

[0018] Figure 3 for Figure 1 A in the enlarged view;

[0019] Figure 4 for Figure 2 The enlarged view of point B in the figure;

[0020] Figure 5 A schematic diagram of the structure of the cleaning module and the detection module in a photovoltaic panel crack detection device provided by an embodiment of the present invention;

[0021] Figure 6 for Figure 5 Enlarged view of point C in the figure.

[0022] In the accompanying drawings: frame 1; conveying module 2; rotating rod 21; positioning column 22; overlapping column 221; limiting column 222; driving unit 23; adjusting module 3; mounting frame 31; transverse rod 32; guide seat 33; connecting rod 34; connecting plate 35; reciprocating unit 4; second driving motor 41; adjusting gear 42; rack 43; cleaning module 5; mounting seat 51; lifting plate 52; telescopic plate 53; inclined surface 531; return spring 54; synchronous connecting rod 55; detection module 6; mounting plate 61; adjusting plate 62; lifting connecting rod 63; industrial camera 64; cleaning brush rod 7; first brush rod 71; second brush rod 72; cleaning sponge 73. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0025] like Figure 1-Figure 4 As shown, a photovoltaic panel crack detection device provided by an embodiment of the present invention includes a frame 1 and further includes:

[0026] The conveying module 2 includes a plurality of rotating rods 21 installed side by side on the frame 1, and a driving unit 23 for driving the rotating rods 21 to rotate simultaneously is also installed on the frame 1, and two positioning columns 22 are symmetrically arranged on each rotating rod 21, and the positioning columns 22 include a lap column 221 slidably installed on the rotating rod 21, and the lap column 221 is connected to the rotating rod 21 by a sliding key, and a limiting column 222 is arranged on one side of the lap column 221 close to the end of the rotating rod 21;

[0027] The adjustment module 3 includes a mounting frame 31 mounted on the frame 1, two guide seats 33 are arranged below the mounting frame 31, and a transverse rod 32 is slidably mounted in each of the two guide seats 33, and a reciprocating unit 4 for driving the two transverse rods 32 to move toward or in the opposite direction at the same time is also installed on the mounting frame 31, and the two transverse rods 32 are connected to a connecting rod 34, and a connecting plate 35 is respectively arranged at the bottom of the two connecting rods 34, and the limiting columns 222 in each positioning column 22 on the same side are rotatably mounted on the same connecting plate 35;

[0028] The detection module 6 includes a mounting plate 61 arranged below the transverse rod 32, an industrial camera 64 is installed at the bottom of the mounting plate 61, and two lifting links 63 are symmetrically arranged on the top of the mounting plate 61, one end of each of the lifting links 63 is hinged to the mounting plate 61, and one end of the lifting link 63 away from the mounting plate 61 is hinged to the adjustment plate 62, and the two adjustment plates 62 are respectively connected to the two transverse rods 32.

[0029] In the embodiment of the present invention, when in use, the spacing between the positioning columns 22 on both sides is first adjusted according to the size of the photovoltaic panel to be tested. Specifically, the reciprocating unit 4 is started, and the two transverse rods 32 are driven by the reciprocating unit 4 to slide toward each other along the corresponding guide seats 33, respectively. The transverse rod 32 can drive the connecting plate 35 to move synchronously through the connecting rod 34, thereby adjusting the spacing between the two connecting plates 35. The connecting plate 35 can drive the positioning columns 22 connected thereto to move synchronously, thereby adjusting the spacing between the positioning columns 22 on both sides, so that the spacing between the two limiting columns 222 is the same as the width of the photovoltaic panel to be tested (here, the width direction of the photovoltaic panel to be tested must be the same as the axial direction of the rotating rod 21). The photovoltaic panel to be tested is placed on one end of the conveying module 2, and the limiting columns 222 on both sides are used to limit the photovoltaic panel to be tested, so that the photovoltaic panel to be tested moves linearly in the conveying module 2. At the same time, the lateral movement rod 32 can drive the adjustment plate 62 to move synchronously, and the adjustment plate 62 can drive the mounting plate 61 to move up and down in the vertical direction through the lifting connecting rod 63. When the two lateral movement rods 32 move toward each other, the mounting plate 61 will move downward. When the two lateral movement rods 32 move away from each other, the mounting plate 61 will move upward. The mounting plate 61 can drive the industrial camera 64 at its bottom to move synchronously. When the width of the photovoltaic panel to be tested is large, the spacing between the two positioning columns 22 will also be large. At this time, the industrial camera 64 will be relatively high, and the picture taken downward is larger; when the width of the photovoltaic panel to be tested is small, the industrial camera 64 will be relatively low, and the picture taken downward is smaller. Through the above settings, the size of the picture taken by the industrial camera 64 in the direction along the axial direction of the rotating rod 21 can be consistent with the width of the photovoltaic panel to be tested, thereby effectively reducing invalid images in the captured picture and reducing the complexity of post-processing.

[0030] like Figure 1 As shown, as a preferred embodiment of the present invention, the driving unit 23 can be arranged in the form of a motor plus a pulley belt mechanism. Specifically, the driving unit 23 includes a first driving motor installed at the bottom of the frame 1, and the output end of the first driving motor is simultaneously connected to each rotating rod 21 through a pulley belt mechanism.

[0031] In the embodiment of the present invention, when in use, it is only necessary to start the first drive motor, and the first drive motor can drive each rotating rod 21 to rotate simultaneously through the pulley and belt mechanism, and the rotating rod 21 can drive the positioning column 22 installed thereon to rotate synchronously, thereby realizing the transportation of the photovoltaic panel.

[0032] like Figure 1 and Figure 3 As shown, as a preferred embodiment of the present invention, the reciprocating unit 4 includes a second drive motor 41 mounted on a mounting frame 31, an adjusting gear 42 is mounted at the output end of the second drive motor 41, a rack 43 is respectively arranged on both sides of the adjusting gear 42, the two racks 43 are both engaged with the adjusting gear 42, and the two racks 43 are respectively connected to two transverse rods 32.

[0033] In the embodiment of the present invention, when in use, it is only necessary to start the second drive motor 41, and the second drive motor 41 can drive the adjusting gear 42 to rotate synchronously. By adjusting the cooperation between the gear 42 and the rack 43, the two transverse rods 32 can be driven to move linearly along the corresponding guide seat 33, and the movement directions of the two transverse rods 32 are always opposite.

[0034] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, as a preferred embodiment of the present invention, a cleaning module 5 for cleaning the surface of the photovoltaic panel to be tested is also provided between the two connecting plates 35. The cleaning module 5 cleans the surface of the photovoltaic panel to be tested to remove dust and impurities thereon, thereby reducing the interference of imaging caused by irrelevant factors and improving the detection accuracy.

[0035] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, as a preferred embodiment of the present invention, the cleaning module 5 includes two mounting seats 51, and the two mounting seats 51 are respectively mounted on two connecting plates 35. A lifting plate 52 and a telescopic plate 53 are provided in the mounting seat 51. The lifting plate 52 is arranged above the telescopic plate 53, and the lifting plate 52 is installed in the mounting seat 51 along the vertical direction, and the lifting plates 52 in the two mounting seats 51 are connected to each other through a telescopic cleaning brush rod 7, the telescopic plate 53 is slidably installed in the mounting seat 51 along the axial direction of the rotating rod 21, and the telescopic plate 53 is connected to the inside of the mounting seat 51 through a reset spring 54, and an inclined surface 531 is provided on one side of the telescopic plate 53 close to the middle part of the rotating rod 21, and a synchronous connecting rod 55 is also hinged on the telescopic plate 53, and the end of the synchronous connecting rod 55 away from the telescopic plate 53 is hinged to the bottom of the lifting plate 52.

[0036] In the embodiment of the present invention, the inclined surface 531 is arranged on the side of the telescopic plate 53 close to the incoming photovoltaic panel material. In the initial state, the inclined surface 531 will extend to the outside of the mounting seat 51 due to the elastic force of the reset spring 54. When in use, when the photovoltaic panel to be tested is being transported on the conveying module 2, the end of the photovoltaic panel will first abut against the inclined surface 531, thereby pushing the telescopic plate 53 to retract into the inner side of the mounting seat 51, and the telescopic plate 53 can drive the lifting plate 52 to move downward through the synchronous connecting rod 55, thereby driving the cleaning brush rod 7 to abut against the upper surface of the photovoltaic panel through the lifting plate 52, and as the photovoltaic panel moves, the cleaning brush rod 7 can clean the surface of the photovoltaic panel.

[0037] As the photovoltaic panel moves, it will separate from the telescopic plate 53. At this time, under the action of the elastic restoring force of the reset spring 54, the telescopic plate 53 will return to its initial state. The telescopic plate 53 drives the lifting plate 52 to move synchronously through the synchronous connecting rod 55, so that the cleaning brush rod 7 also returns to its initial position until the next photovoltaic panel contacts the inclined surface 531.

[0038] As a preferred embodiment of the present invention, the distance between the two lifting plates 52 is the same as the distance between the two limit posts 222 on the same rotating rod 21, so that the length of the cleaning brush rod 7 is always the same as the axial size of the photovoltaic panel to be tested along the rotating rod 21.

[0039] As shown Figure 4 , Figure 5 and Figure 6 As shown, as a preferred embodiment of the present invention, the cleaning brush rod 7 includes a first brush rod 71 and a second brush rod 72, one end of the second brush rod 72 is inserted into the end of the first brush rod 71, the end of the second brush rod 72 away from the first brush rod 71 is connected to a lifting plate 52, the end of the first brush rod 71 away from the second brush rod 72 is connected to another lifting plate 52, and the bottom of the first brush rod 71 and the second brush rod 72 are both provided with cleaning sponges 73.

[0040] In the embodiment of the present invention, as the distance between the two connecting plates 35 changes, the first brush rod 71 and the second brush rod 72 will move synchronously, so that the overall length of the telescopic rod composed of the first brush rod 71 and the second brush rod 72 is always the same as the distance between the two connecting plates 35. The first brush rod 71 and the second brush rod 72 are driven by the lifting plate 52 to move downward as a whole, so that the cleaning sponge 73 contacts the upper surface of the photovoltaic panel, and the upper surface of the photovoltaic panel can be scraped and cleaned by the cleaning sponge 73, thereby removing dust and impurities thereon.

[0041] Working principle: When in use, first adjust the spacing between the positioning columns 22 on both sides according to the size of the photovoltaic panel to be tested. Specifically, start the second drive motor 41, the second drive motor 41 can drive the adjustment gear 42 to rotate synchronously, and by adjusting the cooperation between the gear 42 and the rack 43, the two transverse rods 32 can be driven to slide toward each other along the corresponding guide seat 33, and the transverse rod 32 can drive the connecting plate 35 to move synchronously through the connecting rod 34, thereby adjusting the spacing between the two connecting plates 35, and the connecting plate 35 can drive the positioning columns 22 connected thereto to move synchronously, thereby adjusting the spacing between the positioning columns 22 on both sides, so that the spacing between the two limiting columns 222 is the same as the width of the photovoltaic panel to be tested (here, the width direction of the photovoltaic panel to be tested needs to be the same as the axial direction of the rotating rod 21). The two sides of the photovoltaic panel to be tested are respectively placed on the lap columns 221 on both sides of the rotating rod 21, and the photovoltaic panel to be tested is limited by the limiting columns 222 on both sides, so that the photovoltaic panel to be tested moves linearly in the conveying module 2. Then start the driving unit 23, which can drive each rotating rod 21 to rotate synchronously, and the rotating rod 21 can drive the positioning column 22 to rotate synchronously, so that the photovoltaic panel to be tested passes under the industrial camera 64. The image of the photovoltaic panel to be tested is obtained by the industrial camera 64, and the subsequent data analysis can be carried out to detect whether there are cracks in the photovoltaic panel to be tested. In the process of conveying the photovoltaic panel to be tested on the conveying module 2, the end of the photovoltaic panel will first abut against the inclined surface 531, thereby pushing the telescopic plate 53 to retract into the inner side of the mounting seat 51, and the telescopic plate 53 can drive the lifting plate 52 to move downward through the synchronous connecting rod 55, thereby driving the cleaning brush rod 7 to abut against the upper surface of the photovoltaic panel through the lifting plate 52. With the movement of the photovoltaic panel, the cleaning brush rod 7 can clean the surface of the photovoltaic panel to remove dust and impurities thereon, thereby reducing the interference of imaging of irrelevant factors and improving the detection accuracy.

[0042] In addition, the lateral movement rod 32 can drive the adjustment plate 62 to move synchronously, and the adjustment plate 62 can drive the mounting plate 61 to move up and down in the vertical direction through the lifting connecting rod 63, and when the two lateral movement rods 32 move toward each other, the mounting plate 61 will move downward, and when the two lateral movement rods 32 move away from each other, the mounting plate 61 will move upward, and the mounting plate 61 can drive the industrial camera 64 at its bottom to move synchronously. When the width of the photovoltaic panel to be tested is large, the spacing between the two positioning columns 22 will also be large. At this time, the industrial camera 64 will be relatively high, and the picture taken downward is larger; when the width of the photovoltaic panel to be tested is small, the industrial camera 64 will be relatively low, and the picture taken downward is smaller. Through the above settings, the size of the picture taken by the industrial camera 64 in the direction along the axial direction of the rotating rod 21 can be consistent with the width of the photovoltaic panel to be tested, thereby effectively reducing invalid images in the captured picture and reducing the complexity of post-processing.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic panel crack detection device, comprising a frame, characterized in that: Also includes: A conveying module, wherein the conveying module comprises a plurality of rotating rods installed side by side on a frame, and a driving unit for driving the rotating rods to rotate simultaneously is also installed on the frame, and two positioning columns are symmetrically arranged on each rotating rod, and the positioning columns comprise a lap column slidably installed on the rotating rod, and the lap column is connected to the rotating rod by a sliding key, and a limiting column is arranged on one side of the lap column close to the end of the rotating rod; An adjustment module, wherein the adjustment module comprises a mounting frame mounted on the frame, two guide seats are arranged below the mounting frame, transverse rods are slidably mounted in the two guide seats, and a reciprocating unit for driving the two transverse rods to move towards or in opposite directions at the same time is also installed on the mounting frame, the two transverse rods are connected to a connecting rod, the bottoms of the two connecting rods are respectively provided with a connecting plate, and the limiting columns in each positioning column located on the same side are rotatably mounted on the same connecting plate; The detection module includes a mounting plate arranged below the transverse rod, an industrial camera is installed at the bottom of the mounting plate, two lifting links are symmetrically arranged at the top of the mounting plate, one end of each lifting link is hinged to the mounting plate, one end of the lifting link away from the mounting plate is hinged to the adjustment plate, and the two adjustment plates are respectively connected to the two transverse rods.

2. The photovoltaic panel crack detection device according to claim 1, characterized in that: The driving unit comprises a first driving motor installed at the bottom of the frame, and the output end of the first driving motor is simultaneously connected to each rotating rod through a pulley belt mechanism.

3. The photovoltaic panel crack detection device according to claim 1, characterized in that: The reciprocating unit includes a second driving motor installed on a mounting frame, an adjusting gear is installed at the output end of the second driving motor, a rack is respectively arranged on both sides of the adjusting gear, the two racks are both meshed with the adjusting gear, and the two racks are respectively connected to two transverse rods.

4. The photovoltaic panel crack detection device according to claim 1, characterized in that: A cleaning module for cleaning the surface of the photovoltaic panel to be tested is also arranged between the two connecting plates.

5. The photovoltaic panel crack detection device according to claim 4, characterized in that: The cleaning module includes two mounting seats, and the two mounting seats are respectively mounted on two connecting plates, and a lifting plate and a telescopic plate are arranged in the mounting seat, the lifting plate is arranged above the telescopic plate, and the lifting plate is mounted in the mounting seat along the vertical direction, and the lifting plates in the two mounting seats are connected to each other through a telescopic cleaning brush rod, the telescopic plate is installed in the mounting seat along the axial direction of the rotating rod, and the telescopic plate is connected to the inside of the mounting seat through a return spring, an inclined surface is arranged on one side of the telescopic plate close to the middle of the rotating rod, a synchronous connecting rod is also hinged on the telescopic plate, and an end of the synchronous connecting rod away from the telescopic plate is hinged to the bottom of the lifting plate.

6. The photovoltaic panel crack detection device according to claim 5, characterized in that: The distance between the two lifting plates is the same as the distance between the two limiting posts on the same rotating rod.

7. The photovoltaic panel crack detection device according to claim 6, characterized in that: The cleaning brush rod comprises a first brush rod and a second brush rod, one end of the second brush rod is plugged into the end of the first brush rod, one end of the second brush rod away from the first brush rod is connected to a lifting plate, one end of the first brush rod away from the second brush rod is connected to another lifting plate, and cleaning sponges are provided at the bottom of the first brush rod and the second brush rod.

Images