Protective device for a cleaning robot, a photovoltaic power generation system, and a photovoltaic power station

Abstract

The present invention discloses a protection device for a cleaning robot, which is used for a photovoltaic power generation system. The protection device includes a swing rod mechanism, and the swing rod mechanism includes a transmission shaft and a swing rod. The swing rod is hinged to the first or second row of photovoltaic modules and has a storage state and a blocking state. The first end of the transmission shaft is connected to the swing rod and is used to drive the swing rod to rotate to switch the state. The second end of the transmission shaft is fixed at a preset position of an adjacent row of photovoltaic modules. When the installation angle difference between the first and second rows of photovoltaic modules does not exceed a preset value, the swing rod remains in the storage state. When the installation angle difference exceeds the preset value, the preset position transmits torque to the swing rod through the transmission shaft and drives the swing rod to rotate and switch to the blocking state. In this protection device, the swing rod maintains the storage state when the installation angle difference between the first and second rows of photovoltaic modules does not exceed the preset value, ensuring the normal operation of the cleaning robot. When the installation angle difference exceeds the preset value, the swing rod switches to the blocking state to prevent the cleaning robot from falling. The present invention also discloses a photovoltaic power generation system and a photovoltaic power station.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and more specifically, to a protection device for a cleaning robot, a photovoltaic power generation system, and also to a photovoltaic power station. Background Art

[0002] Photovoltaic modules are used to convert solar energy into electrical energy and are the most important part of a photovoltaic power generation system. Photovoltaic modules are usually installed in the wild or in an open environment, and it is inevitable that impurities such as dust cover them, affecting the power generation efficiency. Therefore, a cleaning robot is generally set in the photovoltaic power generation system to clean the photovoltaic modules.

[0003] In the prior art, multiple photovoltaic modules are assembled together to form a row of photovoltaic modules. A bridge is arranged between adjacent rows of photovoltaic modules to facilitate the cleaning robot to pass through and then clean each adjacent row of photovoltaic modules in turn, improving the cleaning efficiency. However, when adjusting the installation angles of adjacent rows of photovoltaic modules respectively using their own photovoltaic tracking brackets, it is inevitable to produce an angular deviation. If the deviation is too large, the bridge will be directly disconnected, resulting in the cleaning robot falling from the gap between adjacent rows of photovoltaic modules, endangering the safety of the cleaning robot.

[0004] In addition, after the bridge is broken, it needs to be manually restored, resulting in a large amount of later maintenance work and high costs.

[0005] In summary, how to prevent the cleaning robot from falling from the gap between adjacent rows of photovoltaic modules and improve the safety of the cleaning robot is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a protection device for a cleaning robot. In the swing rod mechanism of the protection device, the swing rod can be switched to a blocking state when the installation angle difference between adjacent rows of photovoltaic modules exceeds a preset value, preventing the cleaning robot from passing through and preventing it from falling from the gap between adjacent rows of photovoltaic modules, thereby improving the safety of the cleaning robot. The present invention also provides a photovoltaic power generation system and a photovoltaic power station applying the above protection device, which can prevent the cleaning robot from falling from the gap between adjacent rows of photovoltaic modules and improve the safety of the cleaning robot.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A protection device for a cleaning robot, which is used for a photovoltaic power generation system. The photovoltaic power generation system at least includes a first row of photovoltaic modules and a second row of photovoltaic modules arranged adjacent to each other along a preset direction. The protection device includes a swing rod mechanism, and the swing rod mechanism includes:

[0009] A swing rod, which is hinged to the first row of photovoltaic modules or the second row of photovoltaic modules, and the swing rod has a storage state and a blocking state;

[0010] A drive shaft, the first end of the drive shaft is connected to the swing rod and is used to drive the swing rod to rotate to switch states; the second end of the drive shaft is fixed at a preset position of an adjacent row of photovoltaic modules;

[0011] Wherein, when the installation angle difference between the first row of photovoltaic modules and the second row of photovoltaic modules does not exceed a preset value, the swing rod remains in a retracted state; when the installation angle difference exceeds the preset value, the preset position transmits torque to the swing rod through the drive shaft and drives the swing rod to rotate and switch to a blocking state.

[0012] Preferably, in the above-mentioned protection device, the swing rod mechanism further includes a bracket rotatably installed on the row of photovoltaic modules, and the bracket and the swing rod are installed on the same row of photovoltaic modules; the first end of the drive shaft is fixed to the bracket and is connected to the swing rod through the bracket.

[0013] Preferably, in the above-mentioned protection device, the drive shaft is a flexible drive shaft.

[0014] Preferably, in the above-mentioned protection device, each row of photovoltaic modules is supported by its own photovoltaic tracking bracket respectively, and the preset position is the end face of the main shaft in the photovoltaic tracking bracket of the row of photovoltaic modules.

[0015] Preferably, in the above-mentioned protection device, the photovoltaic tracking bracket is a flat single-axis tracking bracket.

[0016] Preferably, in the above-mentioned protection device, there are two sets of the swing rod mechanisms between the first row of photovoltaic modules and the second row of photovoltaic modules, and the second ends of the drive shafts in the two sets are respectively fixed at the preset positions of the first row of photovoltaic modules and the preset positions of the second row of photovoltaic modules.

[0017] Preferably, in the above-mentioned protection device, the bracket is provided with a preset chute, the swing rod is fixed with a connecting shaft, and the connecting shaft is inserted into the preset chute.

[0018] Preferably, in the above-mentioned protection device, the preset chute is a symmetric structure on both sides, and the connecting shaft is in the middle position of the preset chute in the retracted state.

[0019] Preferably, in the above-mentioned protection device, the bracket is fixed with a cam, and the cam is used to drive the swing rod to switch states.

[0020] A photovoltaic power generation system includes a first row of photovoltaic modules and a second row of photovoltaic modules arranged adjacent to each other along a preset direction, and further includes a protection device for a cleaning robot, and the protection device is the protection device described in any one of the above technical solutions.

[0021] Preferably, in the above photovoltaic power generation system, a bridge is provided between the first row of photovoltaic modules and the second row of photovoltaic modules. The bridge includes a first cross bar and a second cross bar whose root ends are respectively fixedly connected to the first row of photovoltaic modules and the second row of photovoltaic modules. The two cross bars intersect, and their tops respectively extend towards the backlight side of the row of photovoltaic modules.

[0022] Preferably, in the above photovoltaic power generation system, a plurality of bridges are provided between the first row of photovoltaic modules and the second row of photovoltaic modules.

[0023] A photovoltaic power station includes a photovoltaic power generation system, and the photovoltaic power generation system is the photovoltaic power generation system described in any one of the above technical solutions.

[0024] The present invention provides a protection device for a cleaning robot, which is used for a photovoltaic power generation system. The photovoltaic power generation system at least includes a first row of photovoltaic modules and a second row of photovoltaic modules arranged adjacent to each other along a preset direction. The protection device includes a swing rod mechanism, and the swing rod mechanism includes a swing rod and a transmission shaft. The swing rod is hinged to the first row of photovoltaic modules or the second row of photovoltaic modules, and the swing rod has a storage state and a blocking state. The first end of the transmission shaft is connected to the swing rod, and the transmission shaft is used to drive the swing rod to rotate to switch the state. The second end of the transmission shaft is fixed at a preset position of the adjacent row of photovoltaic modules. Wherein, when the installation angle difference between the first row of photovoltaic modules and the second row of photovoltaic modules does not exceed a preset value, the swing rod remains in the storage state; when the installation angle difference exceeds the preset value, the preset position transmits torque to the swing rod through the transmission shaft, driving the swing rod to rotate and switch to the blocking state.

[0025] In the above protection device, when the installation angle difference between the first row of photovoltaic modules and the second row of photovoltaic modules does not exceed the preset value, the swing rod can maintain the storage state, enabling the cleaning robot to smoothly pass through the gap between the two rows of photovoltaic modules, ensuring the normal progress of the cleaning work, and improving the power generation efficiency of the row of photovoltaic modules. At the same time, when the installation angle difference between the adjacent first and second rows of photovoltaic modules exceeds the preset value, the swing rod switches to the blocking state, preventing the cleaning robot from passing through the gap between the first and second rows of photovoltaic modules, preventing it from falling, and improving the safety of the cleaning robot.

[0026] The present invention also provides a photovoltaic power generation system and a photovoltaic power station applying the above protection device, which can prevent the cleaning robot from falling through the gap between adjacent rows of photovoltaic modules and improve the safety of the cleaning robot.

[0027] In addition, in the photovoltaic power generation system provided by the present invention, the bridge includes two cross bars, and there is only an intersection but no connection relationship between the two cross bars. Even if the installation angle difference between the first and second rows of photovoltaic modules exceeds the preset value, no damage will occur, and there is no need for manual restoration, which is convenient for later maintenance and reduces the maintenance cost. Description of the Drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Schematic structural diagram of the protective device of the cleaning robot provided by the embodiment of the present invention when the swing rod is in the retracted state;

[0030] Figure 2 Schematic structural diagram of the protective device of the cleaning robot provided by the embodiment of the present invention when the swing rod is in the blocking state;

[0031] Figure 3 Another angle structural diagram of the protective device of the cleaning robot provided by the embodiment of the present invention when the swing rod is in the blocking state;

[0032] Figure 4 Schematic structural diagram of the photovoltaic power generation system provided by the embodiment of the present invention;

[0033] Wherein, Figures 1 - 4 In:

[0034] Bracket 101; transmission shaft 102; swing rod 103; cam 104; first row of photovoltaic modules 201; second row of photovoltaic modules 202; purlin 21; main shaft 22; bridge 23; first cross bar 231; second cross bar 232. Detailed implementation manners

[0035] The embodiment of the present invention discloses a protective device for a cleaning robot. In the swing rod mechanism of the protective device, the swing rod can be switched to the blocking state when the installation angle difference between adjacent rows of photovoltaic modules exceeds a preset value, so as to prevent the cleaning robot from passing through and prevent it from falling through the gap between the adjacent rows of photovoltaic modules, thereby improving the safety of the cleaning robot. The embodiment of the present invention also discloses a photovoltaic power generation system and a photovoltaic power station applying the above protective device, which can prevent the cleaning robot from falling through the gap between adjacent rows of photovoltaic modules and improve the safety of the cleaning robot.

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0037] Please refer to Figures 1 - 4, an embodiment of the present invention provides a protective device for a cleaning robot, which is used for a photovoltaic power generation system. The photovoltaic power generation system at least includes a first photovoltaic module row 201 and a second photovoltaic module row 202 arranged adjacent to each other along a preset direction; the protective device includes a swing rod mechanism, and the swing rod mechanism includes a swing rod 103 and a transmission shaft 102; the swing rod 103 is hinged to the first photovoltaic module row 201 or the second photovoltaic module row 202, and the swing rod 103 has a storage state and a blocking state; the first end of the transmission shaft 102 is connected to the swing rod 103, and the transmission shaft 102 is used to drive the swing rod 103 to rotate to switch states; the second end of the transmission shaft 102 is fixed to a preset position of an adjacent photovoltaic module row (when the swing rod 103 is hinged to the first photovoltaic module row 201, the "adjacent photovoltaic module row" is the second photovoltaic module row 202, and when the swing rod 103 is hinged to the second photovoltaic module row 202, the "adjacent photovoltaic module row" is the first photovoltaic module row 201); wherein, when the installation angle difference between the first photovoltaic module row 201 and the second photovoltaic module row 202 does not exceed a preset value, the swing rod 103 maintains the storage state; when the installation angle difference exceeds the preset value, the above preset position transmits torque to the swing rod 103 through the transmission shaft 102, driving the swing rod 103 to rotate and switch to the blocking state.

[0038] In the protective device provided in this embodiment, when the installation angle difference between the first photovoltaic module row 201 and the second photovoltaic module row 202 does not exceed the preset value, the swing rod 103 can maintain the storage state, enabling the cleaning robot to smoothly pass through the gap between the two photovoltaic module rows, ensuring the normal progress of the cleaning work, and improving the power generation efficiency of the photovoltaic module row; when the installation angle difference between the first photovoltaic module row 201 and the second photovoltaic module row 202 exceeds the preset value, the swing rod 103 switches to the blocking state, preventing the cleaning robot from passing through the gap between the first and second photovoltaic module rows, preventing it from falling, and improving the safety of the cleaning robot.

[0039] At the same time, in the protective device provided in this embodiment, when the installation angle difference between the first photovoltaic module row 201 and the second photovoltaic module row 202 exceeds the preset value, torque is transmitted from the preset position to the swing rod 103 through the transmission shaft 102, enabling the swing rod 103 to automatically switch states without the need to additionally set a power component, which not only simplifies the structure but also saves costs.

[0040] Specifically, the swing rod mechanism further includes a bracket 101 rotatably installed on the photovoltaic module row, and the bracket 101 and the swing rod 103 are installed on the same photovoltaic module row; the first end of the transmission shaft 102 is fixed to the bracket 101 and is connected to the swing rod 103 through the bracket 101.

[0041] In the above protection device, the transmission shaft 102 can be set as a rigid shaft. Correspondingly, the axis of the transmission shaft 102 needs to be set to coincide with the rotation center lines of the first photovoltaic module row 201 and the second photovoltaic module row 202 respectively, which not only ensures that the transmission shaft 102 can transmit torque to the bracket 101, but also avoids damage to the transmission shaft 102 caused by the pulling of the first photovoltaic module row 201 and the second photovoltaic module row 202 due to the installation angle difference between them.

[0042] Those skilled in the art can understand that each photovoltaic module row in the photovoltaic power generation system is supported by its respective photovoltaic tracking bracket, and the installation angle is adjusted through the photovoltaic tracking bracket to adapt to the current illumination conditions. The photovoltaic tracking bracket is provided with a main shaft 22, and each photovoltaic module in the photovoltaic module row is installed on the main shaft 22 through components such as purlins 21, and the rotation center line of the photovoltaic module row is the axis of the main shaft 22.

[0043] The photovoltaic modules of the first photovoltaic module row 201 and the second photovoltaic module row 202 can be set to be fixed to their respective main shafts 22 respectively. At this time, the second end of the transmission shaft 102 can be set to be fixedly connected to the end of the main shaft 22 of the first or second photovoltaic module row (that is, the preset position is the end of the main shaft 22 in the first or second photovoltaic module row). Of course, the main shafts 22 in the first photovoltaic module row 201 and the second photovoltaic module row 202 can also be set to always remain stationary, and only each photovoltaic module rotates around the axis of the main shaft 22. At this time, to ensure that the transmission shaft 102 can transmit the torque of the relative rotation between adjacent photovoltaic module rows to the bracket 101, the second end of the transmission shaft 102 is set to be fixedly connected to the purlin 21 or the frame of the photovoltaic module of the corresponding photovoltaic module row through components such as a connecting plate, that is, the preset position is the position on the connecting plate and other components for connecting the transmission shaft 102, ensuring that the transmission shaft 102 and each photovoltaic module in this photovoltaic module row rotate relative to the adjacent photovoltaic module row at the same time.

[0044] In order to reduce the installation accuracy requirements and installation difficulty, the above transmission shaft 102 is preferably set as a flexible transmission shaft. Similarly, if each photovoltaic module in the photovoltaic module row is fixedly connected to the main shaft 22, the above preset position is set to the end face of the main shaft 22 in the photovoltaic tracking bracket of the photovoltaic module row; if the main shaft 22 in the photovoltaic module row always remains stationary and only each photovoltaic module rotates around the center line of the main shaft 22, the above preset position is set to a position close to the main shaft 22 in the photovoltaic module row and rotating around the axis of the main shaft 22 together with each photovoltaic module in this photovoltaic module row.

[0045] The preset position rotates around the axis of the main shaft 22 together with each photovoltaic module. When the installation angle difference between the first and second rows of photovoltaic modules exceeds the preset value, a rotational torque relative to the adjacent row of photovoltaic modules is generated at the preset position; the preset position is close to the main shaft 22 to prevent the flexible transmission shaft from being overly stretched and damaged when the installation angle difference between two adjacent rows of photovoltaic modules is too large.

[0046] The protective device provided in this embodiment uses a flexible transmission shaft. The flexible transmission shaft can store part of the rotational energy, making the installation angle difference between the first row of photovoltaic modules 201 and the second row of photovoltaic modules 202 relatively small. When the bridge between the two rows of photovoltaic modules is working properly, the swing rod 103 can still remain in the retracted state to ensure the normal operation of the cleaning machine.

[0047] Specifically, when the transmission shaft 102 is set as a rigid shaft, the preset value described above is set to 0; when the transmission shaft 102 is set as a flexible transmission shaft, the preset value described above is a positive number greater than 0.

[0048] Preferably, in the above protective device, the photovoltaic tracking bracket of the row of photovoltaic modules is a single-axis tracking bracket, including a purlin 21 and a main shaft 22. Each photovoltaic module of the row of photovoltaic modules is fixed to the main shaft 22 through the purlin 21, and the main shaft 22 rotates around the center line of the main shaft 22 together with each photovoltaic module.

[0049] In the above protective device, two sets of swing rod mechanisms are provided between the first row of photovoltaic modules 201 and the second row of photovoltaic modules 202, and the second ends of the transmission shafts 102 in the two sets of swing rod mechanisms are respectively fixed to the preset positions of the first row of photovoltaic modules 201 and the preset positions of the second row of photovoltaic modules 202.

[0050] The two sets of swing rod mechanisms can function simultaneously, so that when the cleaning robot moves from the first row of photovoltaic modules 201 to the second row of photovoltaic modules 202 and from the second row of photovoltaic modules 202 to the first row of photovoltaic modules 201, it is respectively protected by the two sets of swing rod mechanisms to prevent falling.

[0051] Of course, according to the size of the gap between the first row of photovoltaic modules 201 and the second row of photovoltaic modules 202, and the size of the swing rod 103 in the swing rod mechanism, only one set of swing rod mechanisms can also be provided between the two rows of photovoltaic modules to ensure that the cleaning robot is protected by the swing rod mechanism when passing through the gap between the first and second rows of photovoltaic modules in both directions. This embodiment does not make any limitations.

[0052] Preferably, in the above protective device, the bracket 101 is provided with a preset chute, and the swing rod 103 is fixed with a connecting shaft, and the connecting shaft is inserted into the preset chute. When the swing rod 103 switches from the retracted state to the blocking state, the connecting shaft slides along the above preset chute.

[0053] The bracket 101 controls the rotation trajectory of the swing rod 103 through the preset sliding grooves and connecting shafts that cooperate with each other, ensuring that the swing rod 103 rotates smoothly to switch states, preventing the swing rod 103 from getting stuck, and improving the reliability of the operation of the swing rod 103.

[0054] Furthermore, the above-mentioned preset slide groove is a bilaterally symmetrical structure, and the connecting axis is located in the middle position of the preset slide groove when in the storage state, ensuring that when the installation angle difference between the first photovoltaic component row 201 and the second photovoltaic component row 202 reaches a preset value along different directions, the swing arm 103 realizes the switching state by sliding along the preset slide groove in different directions.

[0055] Specifically, in the above-mentioned protective device, the bracket 101 is fixed with a cam 104, and the cam 104 is used to drive the swing rod 103 to switch states. The above-mentioned preset slide groove is set on the cam 104. In addition, the preset slide groove can also be cancelled. The cam 104 supports the swing rod 103 and drives the swing rod 103 to rotate during the rotation of the bracket 101 through the pre-designed outer contour. Accordingly, the installation accuracy of the swing rod 103, the cam 104 and the bracket 101 needs to be set to be high to prevent the cam 104 and the swing rod 103 from being separated from each other, causing the swing rod 103 to be unable to switch states.

[0056] An embodiment of the present invention further provides a photovoltaic power generation system, comprising a first photovoltaic component row and a second photovoltaic component row arranged adjacent to each other along a preset direction, and also comprising a protective device for a cleaning robot, the protective device being the protective device provided in the above embodiment.

[0057] In the above photovoltaic power generation system, a bridge frame 23 is provided between the first photovoltaic component row 201 and the second photovoltaic component row 202 .

[0058] The bridge frame 23 includes a first cross bar 231 and a second cross bar 232 whose root ends are fixedly connected to the first photovoltaic assembly row 201 and the second photovoltaic assembly row 202 respectively. The two cross bars intersect and their top ends extend toward the backlight side of the photovoltaic assembly row respectively.

[0059] A plurality of bridge frames 23 are provided between the first photovoltaic component row 201 and the second photovoltaic component row 202 . Specifically, two bridge frames 23 are provided and are arranged at the upper end and the lower end of the photovoltaic component row, respectively.

[0060] In the photovoltaic power generation system provided in this embodiment, there is no connection relationship between the two cross bars in the bridge 23. Even if the installation angle difference between the first row of photovoltaic modules 201 and the second row of photovoltaic modules 202 exceeds the preset value, it will not cause damage to the bridge 23, eliminating the need for manual restoration, facilitating later maintenance, and reducing maintenance costs. At the same time, in the bridge 23 provided in this embodiment, the tops of the two cross bars extend respectively towards the backlight side of the row of photovoltaic modules. When the installation angle difference between the first row of photovoltaic modules 201 and the second row of photovoltaic modules 202 does not exceed the preset value, the passage formed by the bridge 23 can be smoothly transitioned between the two rows of photovoltaic modules, ensuring that the cleaning robot can pass through the bridge 23 relying on its own climbing ability.

[0061] An embodiment of the present invention further provides a photovoltaic power station, including a photovoltaic power generation system, and the photovoltaic power generation system is the photovoltaic power generation system provided in the above embodiment.

[0062] The photovoltaic power generation system and the photovoltaic power station provided in the embodiments of the present invention respectively apply the protection device provided in the above embodiment, which can prevent the cleaning robot from falling through the gap between adjacent rows of photovoltaic modules, improving the safety of the cleaning robot.

[0063] Of course, the photovoltaic power generation system and the photovoltaic power station provided in this embodiment also have other effects related to the protection device provided in the above embodiment, which will not be elaborated here.

[0064] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the various embodiments can be referred to each other.

[0065] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A protection device for a cleaning robot, which is used for a photovoltaic power generation system. The photovoltaic power generation system at least includes a first photovoltaic module row and a second photovoltaic module row arranged adjacent to each other along a preset direction. Characterized in that, It includes a swing rod mechanism, and the swing rod mechanism includes: A swing rod, which is hinged to the first photovoltaic module row or the second photovoltaic module row, and the swing rod has a storage state and a blocking state; A transmission shaft, the first end of the transmission shaft is connected to the swing rod, and the transmission shaft is used to drive the swing rod to rotate to switch states; the second end of the transmission shaft is fixed at a preset position of an adjacent photovoltaic module row; Wherein, when the installation angle difference between the first photovoltaic module row and the second photovoltaic module row does not exceed a preset value, the swing rod remains in the storage state; when the installation angle difference exceeds the preset value, the preset position transmits torque to the swing rod through the transmission shaft, driving the swing rod to rotate and switch to the blocking state; The swing rod mechanism further includes a bracket rotatably installed on the photovoltaic module row. The bracket and the swing rod are installed on the same photovoltaic module row; the first end of the transmission shaft is fixed to the bracket and is connected to the swing rod through the bracket; The bracket is provided with a preset chute, and the swing rod is fixed with a connecting shaft, and the connecting shaft is inserted into the preset chute; The preset chute is a symmetric structure on both sides, and when in the storage state, the connecting shaft is at the middle position of the preset chute.

2. The protection device according to claim 1, Characterized in that, The transmission shaft is a flexible transmission shaft.

3. The protection device according to claim 1, Characterized in that, Each photovoltaic module row is respectively supported by its own photovoltaic tracking bracket, and the preset position is the end face of the main shaft in the photovoltaic tracking bracket of the photovoltaic module row.

4. The protection device according to claim 3, Characterized in that, The photovoltaic tracking bracket is a flat single-axis tracking bracket.

5. The protection device according to any one of claims 1-4, Characterized in that, There are two groups of the swing rod mechanisms between the first photovoltaic module row and the second photovoltaic module row, and the second ends of the transmission shafts in the two groups are respectively fixed at the preset positions of the first photovoltaic module row and the second photovoltaic module row.

6. The protection device according to claim 1, Characterized in that, The bracket is fixed with a cam, and the cam is used to drive the swing rod to switch states.

7. A photovoltaic power generation system includes a first photovoltaic module row and a second photovoltaic module row arranged adjacent to each other along a preset direction, and further includes a protection device for a cleaning robot, Characterized in that, The protection device is the protection device according to any one of claims 1-6.

8. The photovoltaic power generation system according to claim 7, Characterized in that, There is a bridge between the first photovoltaic module row and the second photovoltaic module row. The bridge includes a first cross bar and a second cross bar whose root ends are respectively fixedly connected to the first photovoltaic module row and the second photovoltaic module row. The two cross bars intersect and their tops respectively extend towards the backlight side of the photovoltaic module row.

9. The photovoltaic power generation system according to claim 8, It is characterized in that a plurality of bridge frames are provided between the first row of photovoltaic modules and the second row of photovoltaic modules.

10. A photovoltaic power station, comprising a photovoltaic power generation system, It is characterized in that the photovoltaic power generation system is the photovoltaic power generation system according to any one of claims 7-9.

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