Photovoltaic power station fault detection equipment

Abstract

The present invention discloses a photovoltaic power station fault detection device, which specifically relates to the field of fault detection. The device comprises a mobile robot, a synchronous expansion mechanism is provided on the mobile robot, and the synchronous expansion mechanism includes a plurality of rollers. The rollers rotate to drive the mobile robot to move along the inner wall of a hard circular pipe; the mobile robot is provided with a lifting mechanism, and the lifting mechanism includes a linear drive 1, which is fixedly provided on the mobile robot, and a guide wheel 1 is rotatably provided on the output shaft of the linear drive 1, and the guide wheel 1 is used to support the cable, and the guide wheel 1 is arranged to roll with the cable. The present invention provides a lifting mechanism and a detection mechanism, and lifts the cable in the hard pipe by the guide wheel 1 so that the cable does not contact the inner wall of the hard pipe, and then drives the detection module to perform circular motion along the cable, thereby performing comprehensive fault detection on the cable, ensuring that potential problems with the cable can be discovered and repaired in a timely manner, thereby eliminating safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of fault detection, and more particularly to a photovoltaic power station fault detection device. Background Art

[0002] Photovoltaic power stations utilize the photovoltaic effect of solar cells (PV cells) to convert solar radiation directly into electricity. They typically consist of multiple PV modules distributed over a large area. To minimize energy loss during long-distance transmission, PV stations typically use step-up transformers to increase the voltage of the electricity generated by the PV station. This electricity is then transmitted via cables to substations. To ensure the safety and reliability of power transmission and protect the cables from environmental factors or human damage, the cables transporting power to the substations are installed in underground pipe corridors. Because the cables are made of flexible material, rigid circular tubes are placed around the cables in the underground pipe corridors to provide further physical protection from mechanical damage. The cables are arranged along the length of the tubes. To accommodate thermal expansion and contraction caused by temperature changes and mitigate the negative effects of external vibrations, the cables within the tubes are not kept taut, but rather have a certain amount of slack.

[0003] In order to ensure the reliability of power transmission, timely discover potential problems with cables, and eliminate safety hazards, it is necessary to regularly perform fault detection on cables placed in hard round tubes. In the existing technology, detection modules such as cameras and infrared imagers are used to move along the length of the cable. The relevant parameter information of the cable is collected through the acquisition end of the detection module. Without destroying the cable structure, important information such as the external image and temperature status of the cable can be obtained. The health status of the cable is then judged based on the data fed back by the detection module.

[0004] However, the cable is placed loosely in the hard round tube, and there is a contact surface between the cable and the inner wall of the hard pipe. When the detection module moves along the length of the cable, there is a blind spot when the acquisition end of the detection module performs fault detection, and data cannot be collected on the contact position between the cable and the inner wall of the hard pipe. The cable detection is not comprehensive enough, which may lead to potential problems not being discovered and repaired in time, and the detection effect is not ideal. Summary of the Invention

[0005] The present invention provides a photovoltaic power station fault detection device to solve the following problem: in existing photovoltaic power station fault detection equipment, the cable is loosely placed in a hard circular tube, and there is a contact surface between the cable and the inner wall of the hard tube. When the detection module moves along the length of the cable, there is a blind spot when the acquisition end of the detection module performs fault detection, and data cannot be collected on the contact position between the cable and the inner wall of the hard tube. The cable detection is not comprehensive enough, which may result in potential problems not being discovered and repaired in time, and the detection effect is not ideal.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a photovoltaic power station fault detection device, comprising a mobile robot, the mobile robot being provided with a synchronous expansion mechanism, the synchronous expansion mechanism comprising a plurality of rollers, the rollers driving the mobile robot to move along the inner wall of a hard circular tube by rotation;

[0007] The mobile robot is provided with a lifting mechanism, which includes a linear drive 1, which is fixedly provided on the mobile robot, and a guide wheel 1 is rotatably provided on the output shaft of the linear drive 1, the guide wheel 1 is used to support the cable, the guide wheel 1 is configured to roll with the cable, and the linear drive 1 is used to drive the portion of the cable in contact with the guide wheel 1 to move vertically upward;

[0008] A detection mechanism is provided on the mobile robot, which includes gear one. A C-shaped rack is rotatably provided on the mobile robot. Gear one is engaged with the C-shaped rack. A detection module is fixedly provided on the C-shaped rack. The collection end of the detection module is set toward the central axis of the mobile robot. The C-shaped rack makes a circular motion along the central axis of the mobile robot so that the collection end of the detection module collects cable information.

[0009] In a preferred embodiment, the lifting mechanism includes multiple auxiliary seats, and the multiple auxiliary seats are all arranged on the output shaft of the linear drive one. The auxiliary seat is provided with a sliding hole, and an adapter seat is slidingly arranged in the sliding hole. A guide wheel two is rotatably arranged on the adapter seat, and the guide wheel two is adapted to the corresponding guide wheel one.

[0010] In a preferred embodiment, a stabilizing seat is fixedly provided on the output shaft of the linear drive 1, an angle adjustment mechanism is provided on the stabilizing seat, the angle adjustment mechanism includes a rotary drive 1, the rotary drive 1 is fixedly provided on the bottom of the stabilizing seat, a fixing frame is fixedly provided on the output shaft of the rotary drive 1, and the auxiliary seat is rotatably provided on the fixing frame.

[0011] In a preferred embodiment, a second linear drive is fixedly provided inside the mobile robot, a guide cylinder is fixedly provided on the output shaft of the second linear drive, and the guide cylinder is composed of two semi-arc plates, which are hingedly provided between the two semi-arc plates.

[0012] In a preferred embodiment, a flexible layer is fixedly provided on the inner walls of the two semi-arc plates. The flexible layer is adapted to the surface of the cable and is used to clean impurities on the surface of the cable.

[0013] In a preferred embodiment, the synchronous expansion mechanism includes a moving seat, a bending rod is rotatably provided on the moving seat, a connecting rod is rotatably provided on the mobile robot, the bending rod and the connecting rod are rotatably provided, and the roller is rotatably provided on the connecting rod.

[0014] In a preferred embodiment, a slide bar is fixedly provided on the mobile robot, the mobile seat is slidably provided on the slide bar, and an elastic member 1 is provided between the mobile seat and the mobile robot.

[0015] In a preferred embodiment, a guide rod is fixedly provided on the inner wall of the sliding hole, the adapter seat is slidably sleeved on the guide rod, and the same elastic member 2 is provided between the adapter seat and the inner wall of the sliding hole.

[0016] In a preferred embodiment, the number of gears 1 is set to three, and sprockets are fixedly provided on the three gears 1, and two adjacent sprockets are connected by the same chain transmission.

[0017] In a preferred embodiment, a hollow C-shaped ring is fixedly provided on the mobile robot, the C-shaped rack is located inside the hollow C-shaped ring, and multiple gear 2s are rotatably arranged inside the hollow C-shaped ring. The multiple gear 2s are arranged at equal intervals along the central axis of the mobile robot, and the multiple gear 2s are all engaged with the C-shaped rack.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention sets up a lifting mechanism and a detection mechanism, and uses a guide wheel to lift the cable in the hard pipe so that the cable does not contact the inner wall of the hard pipe. Then it drives the detection module to move in a circular motion along the cable to perform comprehensive fault detection on the cable, ensuring that potential problems of the cable can be discovered and repaired in time, eliminating safety hazards.

[0020] 2. By providing an angle adjustment mechanism and a guide cylinder, the present invention can adjust the deflection angles of multiple cables when the diameter of the hard pipe is small, perform comprehensive fault detection on multiple cables in the hard pipe, and further optimize the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the support frame of the present invention located in a hard pipe.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the support frame of the present invention.

[0023] Figure 3It is a structural schematic diagram of the front view of the support frame of the present invention.

[0024] Figure 4 It is a schematic diagram of the cross-sectional structure of the main support frame of the present invention from the side view.

[0025] Figure 5 It is a structural schematic diagram of the main support frame of the present invention from a side view.

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure of AA.

[0027] Figure 7 It is a structural schematic diagram of the front view of the fixing frame of the present invention.

[0028] Figure 8 Schematic diagram of the moving trajectory of the auxiliary seat of the present invention.

[0029] Figure 9 It is a schematic structural diagram of the guide cylinder of the present invention when viewed from above.

[0030] The accompanying drawings are marked as follows: 1. Mobile robot; 11. Synchronous expansion mechanism; 111. Moving seat; 112. Bending rod; 113. Connecting rod; 114. Roller; 115. Elastic part 1; 12. Hollow C-shaped ring; 2. Lifting mechanism; 21. Linear drive 1; 22. Auxiliary seat; 23. Guide wheel 1; 24. Guide wheel 2; 25. Elastic part 2; 3. Detection mechanism; 31. Gear 1; 32. C-shaped rack; 33. Detection module; 34. Gear 2; 4. Angle adjustment mechanism; 41. Rotation drive 1; 42. Fixed frame; 43. Guide cylinder; a. Hard pipe; b. Cable. DETAILED DESCRIPTION

[0031] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0032] Refer to the instruction manual Figures 1 to 6 A photovoltaic power station fault detection device includes a mobile robot 1, which is provided with a synchronous expansion mechanism 11. The synchronous expansion mechanism 11 includes a plurality of rollers 114. The rollers 114 rotate to drive the mobile robot 1 to move along the inner wall of a hard circular tube.

[0033] The mobile robot 1 is provided with a lifting mechanism 2, which includes a linear drive 21. The linear drive 21 is fixedly provided on the mobile robot 1. A guide wheel 23 is rotatably provided on the output shaft of the linear drive 21. The guide wheel 23 is used to support the cable. The guide wheel 23 is configured to roll with the cable. The linear drive 21 is used to drive the portion of the cable in contact with the guide wheel 23 to move vertically upward.

[0034] A detection mechanism 3 is provided on the mobile robot 1, and the detection mechanism 3 includes a gear 1 31. A C-shaped rack 32 is rotatably provided on the mobile robot 1, and the gear 1 31 is engaged with the C-shaped rack 32. A detection module 33 is fixedly provided on the C-shaped rack 32. The collection end of the detection module 33 is set toward the central axis of the mobile robot 1. The C-shaped rack 32 makes a circular motion along the central axis of the mobile robot 1 so that the collection end of the detection module 33 collects cable information.

[0035] It should be noted that photovoltaic power stations usually obtain electricity when there is sunlight during the day. Therefore, fault detection of cable b can be arranged at night according to actual needs, and the thicker cable b has a larger cross-section and can carry more current without overheating. The linear drive 21 is set as an electric push rod, and the guide wheel 23 is rotatably set on the output end of the electric push rod. The hard pipe a is fixedly installed in the underground pipe gallery, and the cable b is placed in the hard pipe a along the length direction of the hard pipe a. The hard pipe a can provide good protection for the cable b to prevent the cable b from being damaged by external forces. Mechanical damage. In order to prevent cable b from expanding and contracting due to external temperature changes and being affected by external vibrations, cable b in hard pipe a has a margin. The two ends of hard pipe a in the underground corridor can be blocked according to the use requirements. Not blocking the two ends of hard pipe a can improve the heat dissipation effect of cable b in hard pipe a. Cable b in hard pipe a is not in a tight state. A battery is fixedly installed on the mobile robot 1. The battery provides power to other electrical equipment and power sources of the device. Battery power supply is a mature existing technology and will not be elaborated on here. The outer contour of the mobile robot 1 is set to be circular, and multiple rollers 114 are evenly spaced on the outside of the mobile robot 1.

[0036] It should also be noted that there are two groups of lifting mechanisms 2 on the mobile robot 1, and the detection module 33 is located between the two lifting mechanisms 2. The detection module 33 includes but is not limited to an identification camera and an infrared imager. The acquisition end of the camera and the acquisition end of the infrared imager are both set towards the center axis of the mobile robot 1. A flash is provided on the detection module 33, and a Bluetooth module, a network module and an integrated chip module are fixedly provided on the mobile robot 1. The acquisition end of the camera identifies and acquires the surface image of the cable b. The flash can increase the brightness in the cable b to assist the camera in image acquisition. The acquisition end of the infrared imager identifies and acquires the infrared radiation emitted by the cable b and converts it into a visible image, which is used to detect abnormal temperature of the cable b. The data collected by the camera and the infrared imager are processed by the integrated chip module, and then the processed data are transmitted to the cloud server through the Bluetooth module and the network module for the staff to view and compare. The above-mentioned components are mature existing technologies and will not be described in detail here.

[0037] Furthermore, the detection module 33 also includes a through-type current transformer, which is mounted on the outside of cable b. The through-type current transformer moves along the length direction of cable b to detect the electrical variables of cable b, thereby improving the fault detection of cable b, promptly handling problems when they are discovered, and eliminating the safety hazards of cable b.

[0038] The specific implementation scenario is: when fault detection is performed on cable b in hard pipe a, if Figure 1As shown, since the cable b in the hard pipe a has a margin and is not placed tightly in the hard pipe a, first pull the cable b and place it on the guide wheel 23, then put the mobile robot 1 into the hard pipe a from the end of the hard pipe a, start the linear drive 21, and the movement of the output shaft of the linear drive 21 drives the guide wheel 23 to move vertically upward. The movement of the guide wheel 23 increases the height of the cable b, so that the position where the cable b in the hard pipe a contacts the guide wheel 23 does not fit the inner wall of the hard pipe a, and the height of the contact position between the cable b and the guide wheel 23 approaches the central axis of the mobile robot 1. After the mobile robot 1 is located in the hard pipe a, a positioning fixture is fixed in the hard pipe a. The positioning fixture fixes the cable b at the end position inside the hard pipe a, and then drives the roller 114 to rotate. The rotation of the roller 114 causes the mobile robot 1 to move inside the hard pipe a along the length direction of the hard pipe a. During the movement of the mobile robot 1, the C-shaped rack 32 is driven to rotate along the central axis of the mobile robot 1. The rotation of the C-shaped rack 32 drives the detection module 33 to perform a circular motion. The collection end of the detection module 33 always performs a circular motion toward the central axis of the mobile robot 1. The mobile robot 1 moves inside the hard pipe a and cooperates with the circular motion of the detection module 33 to achieve comprehensive fault detection of the cable b. When the fault detection of the cable b is completed, the positioning fixture inside the end of the hard pipe a is removed. Compared with the prior art, the cable b placed in the hard pipe a can be lifted up, and then a comprehensive fault detection can be performed on the cable b, the detection blind spot can be eliminated, the fault of the cable b can be discovered and maintained in time, and the safety hazard of the cable b can be eliminated. The mobile robot 1 moves along the length direction of the mobile robot 1 in the hard pipe a. Since the cable b arranged in the hard pipe a has the feature that the cable b located in the hard pipe a may not be arranged parallel to the central axis of the hard pipe a, when the hard pipe a is fault detected, the guide wheel 23 can arrange the position of the cable b in the hard pipe a, ensuring that the cable b in the hard pipe a is arranged parallel to the central axis of the hard pipe a, and the cable b in a is arranged parallel to the central axis of the hard pipe a, avoiding partial stress concentration of the cable b in the hard pipe a due to too small bending radius, and ensuring that the cable b can work reliably for a long time.

[0039] Refer to the instruction manual Figure 7 and Figure 8The current that a single cable b can carry is limited. Exceeding its rated current carrying capacity may cause overheating or even fire and other safety hazards. Using three cables b in parallel can disperse the total current to each cable, thereby effectively managing power transmission and ensuring safety and efficiency. In order to meet the above conditions, when there are three cables b in the hard pipe a, in order to be able to perform comprehensive fault detection on the three cables b, specifically, the lifting mechanism 2 includes multiple auxiliary seats 22. The multiple auxiliary seats 22 are all arranged on the output shaft of the linear drive 1 21. The auxiliary seat 22 is provided with a sliding hole, and an adapter seat is slidably provided in the sliding hole. A guide wheel 24 is rotatably provided on the adapter seat, and the guide wheel 24 is adapted to the corresponding guide wheel 1 23. A guide rod is fixedly provided on the inner wall of the sliding hole, and the adapter seat is slidably sleeved on the guide rod. The same elastic member 25 is provided between the adapter seat and the inner wall of the sliding hole.

[0040] It should be noted that the second elastic member 25 is configured as a spring, and the spring is fixedly disposed between the inner wall of the sliding hole and the adapter seat.

[0041] It should also be noted that before performing fault detection on the hard pipe a, the cable b to be detected needs to be placed on the guide wheel 23 at the end of the hard pipe a. Figure 7 First, rotate the auxiliary seat 22 on the left side and place the three middle cables b on the guide wheel 1 23. Then, place the cables b on both sides on the corresponding guide wheels 1 23 respectively. Under the action of the elastic force of the elastic member 25, the guide wheel 2 24 applies pressure to the corresponding cable b. The cable b between the guide wheel 1 23 and the guide wheel 2 24 can be well positioned, and a gap of 5 to 8 cm is left between the two adjacent auxiliary seats 22. When the mobile robot 1 moves in the hard pipe a, the collection end of the detection module 33 can perform comprehensive fault detection on multiple cables b at the same time.

[0042] Refer to the instruction manual Figure 8 and Figure 9The space in some underground pipe corridors is limited. In order to save space in the underground pipe corridor and reduce the cost of using hard pipe a, the diameter of hard pipe a is limited. When performing fault detection on multiple cables b, a large space cannot be reserved between two adjacent auxiliary seats 22. As a result, when the detection module 33 makes a circular motion along the central axis of the mobile robot 1, there is still a detection blind spot at the collection end of the detection module 33. In order to solve the above problem, specifically, a stable seat is fixedly provided on the output shaft of the linear drive 1 21, and an angle adjustment mechanism 4 is provided on the stable seat. The angle adjustment mechanism 4 includes a rotating drive 1 41. The rotating drive 1 41 is fixedly provided at the bottom of the stable seat. A fixed frame 42 is fixedly provided on the output shaft of the rotating drive 1 41, and the auxiliary seat 22 is rotatably provided on the fixed frame 42. A linear drive 2 is fixedly provided in the mobile robot 1. A guide cylinder 43 is fixedly provided on the output shaft of the linear drive 2. The guide cylinder 43 is composed of two semi-arc plates, and the two semi-arc plates are hinged. A flexible layer is fixedly provided on the inner walls of the two semi-arc plates. The flexible layer is adapted to the surface of the cable and is used to clean impurities on the surface of the cable.

[0043] It should be noted that, referring to Figure 9 The lifting mechanism 2 on the mobile robot 1 is provided with two groups, the guide cylinder 43 is located between the two linear drivers 21, and the guide cylinder 43 is set on the left side of the hollow C-shaped ring 12. The mobile robot 1 moves from left to right in the hard pipe a. The rotation driver 1 41 is set as a motor, and the motor is fixed at the bottom of the stable seat. The output shaft of the motor is fixed to the fixed frame 42; the linear driver 2 is set as an electric push rod, and the guide cylinder 43 is fixed on the output shaft of the electric push rod.

[0044] It should also be noted that before performing fault detection on cable b, first place cable b between guide wheel 1 23 and guide wheel 2 24, start the rotary driver 1 41, and the rotary driver 1 41 output shaft drives the auxiliary seat 22 to rotate, changing the angles of the three cables b. The three auxiliary seats 22 are of different lengths, and the cables b on the three guide wheels 1 23 are not at the same level. Then install cable b into the guide cylinder 43, and the three cables b are in a straight line. Figure 9The posture setting in the figure is as follows: the three cables b at the right end of the guide cylinder 43 have different postures and are located at different horizontal heights. The mobile robot 1 makes the cables b maintain the above posture while moving in the hard pipe a. The detection module 33 performs a circular motion along the central axis of the mobile robot 1. Since the three cables b are tilted and not located at the same horizontal height, compared with the prior art, even if the diameter of the hard pipe a is limited and a large gap cannot be maintained between two adjacent auxiliary seats 22, the collection end of the detection module 33 can still perform comprehensive fault detection on the three cables b, eliminating the detection blind spot. Since the underground pipe corridor is located underground, the humid environment may cause water droplets to appear on the surface of the cables b. The surface of the cables b may also be covered with dust after long-term use. Both water droplets and dust impurities will affect the detection accuracy of the collection end of the detection module 33. A flexible layer is set in the semi-arc plate, and the flexible layer is set as a hygroscopic sponge. When the mobile robot 1 moves in the hard pipe a, it can clean the outer surface of the hard pipe a with the hygroscopic sponge to remove water droplets and impurities on the surface of the hard pipe a.

[0045] Refer to the instruction manual Figures 1 to 5 To enable mobile robot 1 to stably inspect cable b in hard pipe a according to the diameter of different hard pipes a, the synchronous expansion mechanism 11 specifically includes a movable base 111, a bending rod 112 rotatably mounted on movable base 111, a connecting rod 113 rotatably mounted on mobile robot 1, bending rod 112 and connecting rod 113 rotatably mounted, and a roller 114 rotatably mounted on connecting rod 113. A sliding rod is fixedly mounted on mobile robot 1, and movable base 111 is slidably mounted on the sliding rod. An elastic member 115 is disposed between movable base 111 and mobile robot 1.

[0046] It should be noted that a motor is fixedly mounted on connecting rod 113, and the motor's output shaft is fixedly mounted to roller 114. Rotation of the motor's output shaft drives roller 114. Elastic member 115 is configured as a spring, which is fixedly mounted to movable base 111, and the end of the spring away from movable base 111 is fixedly mounted to mobile robot 1.

[0047] It should also be noted that by pushing the connecting rod 113, the connecting rod 113 causes the bending rod 112 to push the movable seat 111 to move. After the movable seat 111 moves, the elastic member 115 undergoes elastic deformation, thereby achieving the effect of adjusting the position of the roller 114. The adjustable roller 114 can move in hard pipes a of different diameters, enriching the use scenarios of the mobile robot 1.

[0048] Refer to the instruction manual Figures 1 to 6To facilitate circular motion of the detection module 33 along the central axis of the mobile robot 1, three gears 1 31 are provided. Each of the three gears 1 31 is fixedly mounted with a sprocket, and adjacent sprockets are connected by a common chain transmission. A hollow C-shaped ring 12 is fixedly mounted on the mobile robot 1. A C-shaped rack 32 is positioned within the hollow C-shaped ring 12. Multiple gears 2 34 are rotatably mounted within the hollow C-shaped ring 12. These gears 2 34 are evenly spaced along the central axis of the mobile robot 1 and mesh with the C-shaped rack 32.

[0049] It should be noted that a motor is fixedly mounted on the hollow C-shaped ring 12, and is fixedly mounted to the gear 1 31 located in the middle of the three gears 1 31. Two sprockets 1 are fixedly mounted on the middle gear 1 31, and two sprockets 2 are rotatably mounted within the hollow C-shaped ring 12. Sprockets 3 are fixed to the two gears 1 31 located on either side. Sprockets 1 and 2 are driven by the same chain 1, and sprockets 2 and sprocket 3 are driven by the same chain 2. The rotation of the motor output shaft drives the three gears 1 31 to rotate synchronously, and gear 1 31 meshes with the C-shaped rack 32 to achieve the effect of driving the C-shaped rack 32 to rotate.

[0050] The above embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A photovoltaic power station fault detection device, characterized in that: The invention comprises a mobile robot (1), wherein the mobile robot (1) is provided with a synchronous expansion mechanism (11), wherein the synchronous expansion mechanism (11) comprises a plurality of rollers (114), and wherein the rollers (114) drive the mobile robot (1) to move along the inner wall of a hard circular tube by rotating; The mobile robot (1) is provided with a lifting mechanism (2), the lifting mechanism (2) includes a linear drive (21), the linear drive (21) is fixedly provided on the mobile robot (1), a guide wheel (23) is rotatably provided on the output shaft of the linear drive (21), the guide wheel (23) is used to support the cable, the guide wheel (23) is configured to roll with the cable, and the linear drive (21) is used to drive the portion of the cable in contact with the guide wheel (23) to move vertically upward; The mobile robot (1) is provided with a detection mechanism (3), the detection mechanism (3) comprising a gear (31), a C-shaped rack (32) rotatably provided on the mobile robot (1), the gear (31) being meshed with the C-shaped rack (32), a detection module (33) being fixedly provided on the C-shaped rack (32), a collection end of the detection module (33) being arranged toward the central axis of the mobile robot (1), and the C-shaped rack (32) performing a circular motion along the central axis of the mobile robot (1) so that the collection end of the detection module (33) collects cable information.

2. A photovoltaic power station fault detection device according to claim 1, characterized in that: The lifting mechanism (2) includes a plurality of auxiliary seats (22), and the plurality of auxiliary seats (22) are all arranged on the output shaft of the linear driver (21). A sliding hole is opened on the auxiliary seat (22), and an adapter seat is slidably arranged in the sliding hole. A guide wheel 2 (24) is rotatably arranged on the adapter seat, and the guide wheel 2 (24) is adapted to the corresponding guide wheel 1 (23).

3. A photovoltaic power station fault detection device according to claim 2, characterized in that: A stabilizing seat is fixedly provided on the output shaft of the linear driver (21), an angle adjustment mechanism (4) is provided on the stabilizing seat, the angle adjustment mechanism (4) comprises a rotary driver (41), the rotary driver (41) is fixedly provided at the bottom of the stabilizing seat, a fixing frame (42) is fixedly provided on the output shaft of the rotary driver (41), and the auxiliary seat (22) is rotatably provided on the fixing frame (42).

4. A photovoltaic power station fault detection device according to claim 3, characterized in that: A second linear drive is fixedly provided inside the mobile robot (1), a guide cylinder (43) is fixedly provided on the output shaft of the second linear drive, and the guide cylinder (43) is composed of two semi-arc plates, and the two semi-arc plates are hingedly provided.

5. A photovoltaic power station fault detection device according to claim 4, characterized in that: A flexible layer is fixedly provided on the inner walls of the two semi-arc plates. The flexible layer is adapted to the surface of the cable and is used to clean impurities on the surface of the cable.

6. A photovoltaic power station fault detection device according to claim 5, characterized in that: The synchronous expansion mechanism (11) includes a movable seat (111), a bending rod (112) is rotatably provided on the movable seat (111), a connecting rod (113) is rotatably provided on the mobile robot (1), the bending rod (112) and the connecting rod (113) are rotatably provided, and the roller (114) is rotatably provided on the connecting rod (113).

7. A photovoltaic power station fault detection device according to claim 6, characterized in that: A slide bar is fixedly provided on the mobile robot (1), the mobile seat (111) is slidably provided on the slide bar, and an elastic member (115) is provided between the mobile seat (111) and the mobile robot (1).

8. The photovoltaic power station fault detection device according to claim 7, characterized in that: A guide rod is fixedly arranged on the inner wall of the sliding hole, and the adapter seat is slidably sleeved on the guide rod. The same elastic member 2 (25) is arranged between the adapter seat and the inner wall of the sliding hole.

9. The photovoltaic power station fault detection device according to claim 8, characterized in that: The number of the gears (31) is set to three, and sprockets are fixedly provided on the three gears (31), and two adjacent sprockets are connected through the same chain transmission.

10. The photovoltaic power station fault detection device according to claim 9, characterized in that: A hollow C-shaped ring (12) is fixedly provided on the mobile robot (1), the C-shaped rack (32) is located inside the hollow C-shaped ring (12), a plurality of gears (34) are rotatably provided inside the hollow C-shaped ring (12), the plurality of gears (34) are arranged at equal intervals along the central axis of the mobile robot (1), and the plurality of gears (34) are all meshed with the C-shaped rack (32).

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