Connecting structure and photovoltaic cleaning robot with same

Abstract

The utility model provides a connecting structure and a photovoltaic cleaning robot with the same, and belongs to the technical field of cleaning robots, the connecting structure is characterized in that a groove is formed in a fixing piece, one side of the groove is an opening, and the fixing piece is configured to be connected with a driving device; the first end of the connecting piece is rotatably arranged in the groove, the second end of the connecting piece is used for being connected with the brush head, and the connecting piece swings in a vertical plane; according to the utility model, the groove is formed in the fixing piece, so that the connecting piece can swing in the groove, the brush head is kept in normal contact with the photovoltaic panel in the state that the brush head does not touch the photovoltaic frame, and when the brush head is in contact with the photovoltaic frame, as the height of the frame is higher than that of the photovoltaic panel, when the brush head touches the photovoltaic frame, the brush head is not in contact with the photovoltaic frame. The brush head drives the connecting piece to take the rotating point as a circle center, thereby preventing hard contact between the brush head and the frame from damaging the brush head.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cleaning robot technical field, concretely relates to a connecting structure and have its photovoltaic cleaning robot. BACKGROUND

[0002] In photovoltaic panels, automatic cleaning robots play a crucial role. These intelligent devices are designed to maintain the high efficiency of solar panels, ensuring that the panel surface is free from dust, dirt, or other obstructions through an automated cleaning process, thereby maximizing its energy conversion efficiency.

[0003] The edges of photovoltaic panels are surrounded by photovoltaic frames made of aluminum alloy material, and the height of the frame slightly exceeds the panel itself. In the prior art, the brush head of the cleaning robot is installed on the shell. When the robot moves along the working path, it needs to cross from one photovoltaic panel to another panel, crossing the photovoltaic frame, the forced contact of the brush head with the frame may damage its structure. Such collisions not only reduce the cleaning efficiency, but also shorten the service life of the robot. SUMMARY

[0004] Therefore, the utility model wants to solve one of the above technical problems, so as to provide a connecting structure and photovoltaic cleaning robot with it.

[0005] In order to solve the above technical problems, the utility model provides a connecting structure, which comprises: a fixing part, a groove is provided on the fixing part, one side of the groove is an opening;

[0006] A connecting piece, the first end of the connecting piece is rotatably arranged in the groove, the second end of the connecting piece is used for connecting the brush head, and the connecting piece swings in the vertical plane;

[0007] In the initial state, the connecting piece abuts to one side end face of the groove, when encountering the photovoltaic frame, the brush head drives the connecting piece to rotate upward in the groove with the rotation point as the center, and then makes the brush head pass over the obstacle.

[0008] Preferably, the opening of the groove is arranged on the upper end face of the fixing part, and the first end of the connecting piece is inserted into the groove along the vertical direction.

[0009] Preferably, the lower end face of the groove is provided with a channel for dust or liquid outflow.

[0010] Preferably, the fixing part is provided with an abutting piece extending upward along the vertical direction, the connecting piece has a first end face in abutting contact with the abutting piece, and the abutting piece is used for limiting the rotation angle of the swinging of the connecting piece in the initial state.

[0011] Preferably, the lower end of the connecting piece is concave upward to form a receiving cavity, the first end face is a side end face of the receiving cavity facing the first end of the connecting piece, and the abutting piece is arranged in the receiving cavity.

[0012] Preferably, the upper end of the abutting piece is provided with a bent section extending in a horizontal direction away from the first end face, the receiving cavity is provided with a second end face for abutting with the end of the bent section in the extending direction of the bent section, and the second end face is arranged spaced apart from the bent section in the initial state.

[0013] When the connecting piece is rotated upward by a certain angle, the second end face abuts the end of the bent section.

[0014] Preferably, a limiting piece is detachably arranged on the fixed piece in a horizontal direction, one end of the limiting piece has a rotating shaft, and the rotating shaft is rotatably connected with the first end of the connecting piece after penetrating through the fixed piece.

[0015] Preferably, the limiting piece is slidingly connected with the fixed piece, the fixed piece is provided with an elastic piece, one end of the elastic piece is connected with the limiting piece, and the elastic piece has a force for driving the limiting piece to move toward the connecting piece.

[0016] Preferably, a plurality of clamping grooves are arranged on a side end face of the fixed piece facing the limiting piece, and the limiting piece has protrusions clamped and matched with the clamping grooves.

[0017] Preferably, a sliding piece is slidingly arranged on the second end of the connecting piece in a vertical direction, the sliding piece is used for detachable connection with the brush head, and the connecting piece is provided with a locking piece for limiting the sliding piece.

[0018] Preferably, an end of the second end of the connecting piece is provided with a sliding groove in a vertical direction, a protrusion is arranged on the sliding piece and extends toward the sliding groove, and the protrusion is slidingly arranged in the sliding groove.

[0019] Preferably, at least one adjusting hole is arranged on an outer side end face of the second end of the connecting piece, the adjusting hole is in communication with the sliding groove, and one end of the locking piece is connected with the protrusion after penetrating through the sliding groove.

[0020] Preferably, the adjusting hole is a long slot arranged in a vertical direction.

[0021] In addition, a photovoltaic cleaning robot is also provided, which comprises a driving device and a brush head assembly, the driving device is provided with the connecting structure in any one of the above-mentioned solutions, and the brush head assembly is detachably connected with the connecting piece or the sliding piece.

[0022] Preferably, the brush head assembly is provided with a clamping piece in a horizontal direction, the sliding piece is provided with a clamping groove in sliding connection with the clamping piece, and a fastener is located on the sliding piece by abutting on the clamping piece.

[0023] The technical scheme of the utility model has the following advantages:

[0024] 1. The connecting structure provided by the utility model, by arranging a groove on the fixing piece, the connecting piece can swing in the groove, in normal cleaning state, the brush head keeps normal contact with the photovoltaic panel, when the brush head contacts the photovoltaic frame, because the height of the frame is higher than that of the photovoltaic panel, when the brush head meets the frame, the brush head drives the connecting piece to rotate around the rotating point, avoiding hard contact between the brush head and the frame to damage the brush head.

[0025] 2. The connecting structure provided by the utility model, by arranging the opening of the groove upward, it is more convenient to add lubricating liquid to the rotating part, and under the action of gravity, the connection between the connecting piece and the fixing piece is more stable.

[0026] 3. The photovoltaic cleaning robot provided by the utility model, after dust or liquid flows into the groove, it can flow out through the channel at the bottom of the groove, thereby avoiding accumulation of dust or liquid in the groove, and ensuring long-term stable operation of the photovoltaic cleaning robot. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0028] Figure 1 It is the front view of the connecting structure provided in the first embodiment of the utility model;

[0029] Figure 2 It is the bottom view of the connecting structure in Figure 1 ;

[0030] Figure 3 It is the top view of the connecting structure in Figure 2 ;

[0031] Figure 4 It is the explosion view of the connecting structure in Figure 3 ;

[0032] Figure 5 It is the front view of the photovoltaic cleaning robot provided in the embodiment;

[0033] Figure 6 For Figure 5 Front view of the photovoltaic cleaning robot touching the photovoltaic frame lifting in the second embodiment of the utility model;

[0034] Figure 7 The perspective view of the connecting structure provided in the second embodiment of the utility model is shown in the figure.

[0035] Figure 8 For Figure 7 The exploded view of the connecting structure in the figure.

[0036] Figure 9 For Figure 8 The rear exploded view of the connecting structure in the figure.

[0037] Figure 10 For Figure 7 The perspective view of the photovoltaic cleaning robot installed with the connecting structure in the figure.

[0038] Explanation of reference signs:

[0039] 1, fixed part; 2, connecting part; 3, brush head; 4, channel; 5, abutting part; 6, first end face; 7, bending section; 8, second end face; 9, containing cavity; 10, limiting part; 11, rotating shaft; 12, sliding part; 13, locking part; 14, protruding block; 15, sliding groove; 16, adjusting hole; 17, clamping groove; 18, clamping part; 19, recess; 20, driving device; 21, protrusion; 22, clamping groove. DETAILED DESCRIPTION

[0040] The technical scheme of the utility model will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0041] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "mount", "link", "connect" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through intermediate medium, can be the intercommunication of two elements inside, for ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0043] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0044] Embodiment one

[0045] As Figure 5 and Figure 6 shown, the photovoltaic cleaning robot includes a brush head 3 and a driving device 20, and the brush head 3 is connected with the driving device 20 through a connecting structure. The driving device 20 drives the photovoltaic cleaning robot to walk on the photovoltaic panel, and the brush head 3 is used to clean the photovoltaic panel. The photovoltaic panel includes a light-transmitting area and a photovoltaic frame located around the light-transmitting area, and the photovoltaic frame protrudes from the light-transmitting area.

[0046] As Figure 1 , Figure 2 shown, a specific embodiment of the connecting structure provided in the embodiment is shown, and the connecting structure includes a fixing part 1 and a connecting part 2. The fixing part 1 is configured to be connected with the driving device 20, and a groove 19 is arranged on the fixing part 1, and one side of the groove 19 is an opening. The first end of the connecting part 2 is inserted into the groove 19, and the first end of the connecting part 2 is rotatably arranged in the groove 19, and the second end is used to connect the brush head 3. The first end of the connecting part 2 rotates in the groove 19, and the second end of the connecting part 2 swings in the vertical plane, that is, the connecting part 2 can swing back and forth in the opening of the groove 19. By rotating the first end of the connecting part 2 in the groove 19, the rotation of the connecting part 2 in the vertical direction can drive the brush head 3 to move in the vertical direction.

[0047] In the initial state (that is, when the brush head 3 is not in contact with the photovoltaic frame of the photovoltaic panel), the connecting part 2 abuts against the side end face of the groove 19 to support the brush head 3, so as to prevent the brush head 3 from excessively contacting the photovoltaic panel under the action of gravity and affecting the walking of the photovoltaic cleaning robot. When the brush head 3 encounters the photovoltaic frame, since the brush head 3 is lifted as a whole after moving onto the photovoltaic frame, the lifting of the brush head 3 will drive the connecting part 2 to rotate upward in the groove 19 with the rotation point as the center. At this time, the rotation of the connecting part 2 in the vertical direction will lift the brush head 3, so that the brush head 3 rolls over from above the photovoltaic frame and passes over the photovoltaic frame.

[0048] The connecting piece 2 can swing in the groove 19 by setting a groove 19 on the fixing piece 1. In the normal cleaning state, the brush head 3 keeps normal contact with the photovoltaic panel. When the brush head 3 contacts the photovoltaic frame, the brush head 3 meets the frame, and the connecting piece 2 rotates around the rotating point, avoiding the hard contact between the brush head 3 and the frame.

[0049] As shown in Figure 3 , Figure 4 In the embodiment, the opening of the groove 19 is set on the upper end surface of the fixing piece 1, the first end of the connecting piece 2 is inserted into the groove 19 along the vertical direction, and the end of the connecting piece 2 is rotatably arranged in the groove 19. At this time, the second end of the connecting piece 2 is connected with the brush head 3, and the lower end of the brush head 3 contacts the photovoltaic panel. Under the action of gravity of the brush head 3, the connecting piece 2 always abuts against the side end surface of the groove 19 close to the brush head 3. When the brush head 3 meets the photovoltaic frame, the photovoltaic frame lifts the brush head 3, so that the connecting piece 2 rotates upward. By setting the opening of the groove 19 upward, it is more convenient to add lubricating liquid to the rotating part when needed, and the connection between the connecting piece 2 and the fixing piece 1 is more stable under the action of gravity. In addition, as an alternative embodiment, the opening of the groove 19 can be set on the side end surface of the fixing piece 1, that is, the opening is horizontally set. At this time, the connecting piece 2 extends into the groove 19 along the horizontal direction, and the rotating connection between the connecting piece 2 and the groove 19 can also be realized. At this time, the connecting piece 2 abuts against the lower end surface of the groove 19 under the action of gravity.

[0050] As shown in Figure 2 In the embodiment, the lower end surface of the groove 19 is provided with a passage 4, and the passage 4 is a circular hole. After the dust or liquid flows into the groove 19, it can flow out through the passage 4 at the bottom of the groove 19, so as to avoid the accumulation of dust or liquid in the groove 19, and ensure the long-term stable operation of the photovoltaic cleaning robot. In addition, as an alternative embodiment, the passage 4 can also be set on the side end surface of the groove 19. In addition, as an alternative embodiment, the shape of the passage 4 can also be set as other shapes, for example: square hole, oval hole, etc. In addition, as an alternative embodiment, the passage 4 can not be set, and the connecting piece 2 can be disassembled to clean the groove 19.

[0051] As shown in Figure 1 , Figure 4As shown, in this embodiment, the fixing member 1 is provided with an abutment member 5, which extends upward in the vertical direction. The connecting member 2 is provided with a first end face 6. In the initial state, the abutment member 5 of the fixing member 1 abuts against the first end face 6. By providing the upwardly extending abutment member 5, the abutment member 5 can provide a more stable lateral support force to the connecting member 2. In addition, as an alternative implementation, the abutment member 5 can be a protrusion 21 structure on the fixing member 1 extending towards the connecting member 2, or it can be the inner end face of the groove 19 itself.

[0052] like Figure 4 As shown, in this embodiment, the lower end face of the connector 2 is recessed upward to form a receiving cavity 9, and the first end face 6 is the side end face of the receiving cavity 9, which is close to the first end of the connector 2. Initially, the abutment 5 extends into the receiving cavity 9 and abuts against the first end face 6 of the connector 2, providing lateral support to the connector 2 and restricting its rotation. When the connector 2 rotates upward in the vertical plane, the first end face 6 of the connector 2 disengages from the abutment 5. Alternatively, as an alternative implementation, the first end face 6 can also be set as the upper end face of the receiving cavity 9, that is, the upper end face of the abutment 5 abuts against the upper end face of the receiving cavity 9.

[0053] like Figure 4 As shown, in this embodiment, the bent section 7 is disposed on the upper end of the abutment 5 and extends horizontally away from the first end of the connector 2. The abutment 5 and the bent section 7 are disposed within the receiving cavity 9. The second end face 8 is disposed opposite to the first end face 6. In the initial state, the abutment 5 abuts against the first end face 6 of the receiving cavity 9, and the end of the bent section 7 is spaced apart from the second end face 8. When the connector 2 rotates upward in the vertical plane, the first end face 6 of the connector 2 disengages from the abutment 5. When the maximum rotation limit is reached, the second end face 8 of the connector 2 abuts against the end of the bent section 7. By setting the cooperation between the bent section 7 and the second end face 8, the rotation angle of the connector 2 can be limited, ensuring that the brush head 3 is protected from damage when it encounters the photovoltaic frame, and that it does not rotate excessively and fail to return to its initial state. Alternatively, as an alternative implementation, the bending section 7 may be omitted, and the groove 19 may be used to restrict the rotation of the connector 2. That is, when the connector 2 rotates upward, the connector 2 rotates and abuts against the inner wall of the groove 19 for limiting.

[0054] like Figure 3 , Figure 4As shown in the embodiment, the fixing member 1 is detachably provided with a limiting member 10, the limiting member 10 extends from the side end surface of the fixing member 1 in the horizontal direction, the rotating shaft 11 of the limiting member 10 is rotatably connected with the first end of the connecting member 2 after penetrating through the fixing member 1, so that the connecting member 2 rotates around the rotating shaft 11 of the limiting member 10. The limiting member 10 can make the fixing member 1 and the connecting member 2 more convenient to detach. When installation is needed, the first end of the connecting member 2 is inserted into the groove 19, and then the limiting member 10 is rotatably connected with the connecting member 2 after penetrating through the limiting member 10 in the horizontal direction; when detachment is needed, the limiting member 10 is detached from the fixing member 1, and then the connecting member 2 is separated from the fixing member 1. Specifically, the limiting member 10 has a first cylinder and a rotating shaft 11. The axis of the first cylinder is collinear with the rotating shaft 11. The diameter of the rotating shaft 11 is smaller than that of the first cylinder, and the first cylinder is provided with external threads. The limiting member 10 is threadedly connected with the fixing member 1 through the first cylinder. After the limiting member 10 is installed, the rotating shaft 11 extends into the first end of the connecting member 2. In addition, as an alternative embodiment, the limiting member 10 can also be a bolt, the front end of the bolt is a smooth surface, and the bolt is threadedly connected with the fixing member 1. In addition, as an alternative embodiment, the first cylinder and the second cylinder of the limiting member 10 can also be provided with the same diameter.

[0055] As shown in the embodiment, Figure 4 In the embodiment, the second end of the connecting member 2 is slidably provided with a sliding member 12 in the vertical direction, and the brush head 3 is detachably connected with the sliding member 12. The connecting member 2 is provided with a locking member 13 for limiting the sliding member 12, and the locking member 13 is used to limit the displacement of the sliding member 12 and the connecting member 2 in the vertical direction. By providing the sliding member 12, the height of the brush head 3 can be adjusted to adapt to different frame heights in use. In addition, as an alternative embodiment, the sliding member 12 can not be provided, but the brush head 3 is directly detachably connected with the connecting member 2, for example, by bolts or by clamping.

[0056] As shown in the embodiment, Figure 4 In the embodiment, the end of the second end of the connecting member 2 is provided with a sliding groove 15 in the vertical direction, and the sliding member 12 is provided with a protrusion 14 extending towards the sliding groove 15, and the protrusion 14 is slidably arranged in the sliding groove 15. When the height of the sliding member 12 in the vertical direction needs to be adjusted, the protrusion 14 of the sliding member 12 is slid in the height direction in the sliding groove 15, and then the sliding member 12 is locked by the locking member 13, so as to adjust the height of the sliding member 12 and the height of the brush head 3. In addition, as an alternative embodiment, the connecting member 2 can be provided with the protrusion 14, and the sliding member 12 can be provided with the sliding groove.

[0057] As shown in the embodiment, Figure 4As shown in the embodiment, at least one adjusting hole 16 is arranged on the outer end surface of the second end of the connecting piece 2, the adjusting hole 16 is communicated with the sliding groove 15, and one end of the locking piece 13 is connected with the protrusion 14 after penetrating through the sliding groove 15. The locking piece 13 is a bolt, the threaded portion of the locking piece 13 is screwed with the sliding piece 12 after penetrating through the adjusting hole 16, and the nut portion of the locking piece 13 abuts against the end surface of the connecting piece 2, so that the sliding piece 12 cannot be moved by screwing the locking piece 13, thereby ensuring the fixing effect of the sliding piece 12. In addition, as an alternative embodiment, the number of the adjusting hole 16 and the locking piece 13 is not limited, and the person skilled in the art can modify them according to the actual needs, for example, the number of the adjusting hole 16 and the locking piece 13 is two, three, etc.

[0058] As shown in the embodiment, Figure 4 In the embodiment, the adjusting hole 16 is a long hole arranged in the vertical direction, when the sliding piece 12 needs to be adjusted, the locking piece 13 is loosened, the sliding piece 12 is moved in the vertical direction so that the locking piece 13 moves in the long adjusting hole 16, and after the adjustment is completed, the locking piece 13 is tightened to fix the sliding piece 12. In addition, as an alternative embodiment, the adjusting hole 16 can also be arranged as a round hole, a plurality of adjusting holes 16 are arranged in the vertical direction, the locking piece 13 is screwed with the sliding piece 12 after penetrating through the adjusting hole 16, and the sliding piece 12 is arranged at different heights by penetrating the locking piece 13 through the adjusting holes 16 at different heights.

[0059] In addition, as shown in the embodiment, Figure 5 , Figure 6As shown, the photovoltaic cleaning robot also comprises a driving device 20 and a brush head 3 assembly, the brush head 3 assembly comprising a driving member, a brush head 3 and a connecting frame, the connecting frame being a rectangular frame, one end of the connecting frame being an opening, both ends of the brush head 3 in the length direction being rotatably connected to the opening of the connecting frame, and the driving member being arranged on the connecting frame and connected to the brush head 3. The driving member is used to drive the brush head 3 to rotate. Specifically, the driving device 20 is a walking robot, and the structure thereof is a prior art, which will not be described herein. The driving device 20 can drive the brush head 3 to walk on the photovoltaic panel according to a preset walking path, so as to clean the photovoltaic panel. The connecting structure of the above-mentioned solution is arranged on the driving device 20, and in this embodiment, the connecting structure of the above-mentioned solution is symmetrically arranged on both sides of the front end of the driving device 20. The connecting frame of the brush head 3 assembly is detachably connected to the sliding member 12. By arranging the connecting structure between the driving device 20 and the brush head 3 assembly, when the driving device 20 walks on the photovoltaic panel, the brush head 3 cleans the photovoltaic panel, and when it is necessary to cross from one photovoltaic panel to another photovoltaic panel, the brush head 3 will encounter a photovoltaic frame slightly higher than the photovoltaic panel. At this time, since the brush head 3 rotates under the driving of the driving member, when the brush head 3 encounters the photovoltaic frame, the connecting member 2 will rotate upward around the rotation shaft 11 of the limiting member 10, and the brush head 3 will roll to the upper end surface of the photovoltaic frame, so as to reduce the hard contact between the brush head 3 and the photovoltaic frame. In some other embodiments, only one connecting structure can be arranged on the driving device 20, and the connection between the driving device 20 and the brush head 3 assembly can also be achieved.

[0060] As Figure 5As shown, in this embodiment, a snap-fit ​​member 18 is horizontally extended along the length of the connecting frame on the end face away from the opening of the connecting frame 3 assembly. The snap-fit ​​member 18 has a T-shaped cross-section, and three snap-fit ​​members 18 are spaced apart vertically. A snap-fit ​​groove 17 is provided on the sliding member 12, and three snap-fit ​​grooves 17 are spaced apart vertically. The snap-fit ​​member 18 can be slidably disposed in the snap-fit ​​groove 17, which also has a T-shaped cross-section. The fastener is a bolt, which is threadedly connected to the snap-fit ​​member 18. After passing through the sliding member 12, the bolt abuts against the snap-fit ​​member 18 to limit the sliding member 12. When it is necessary to move the sliding member 12, loosening the bolt allows the sliding member 12 to move horizontally; after moving the sliding member 12, tightening the bolt fixes the position of the sliding member 12. After fixing the slider 12, the sliding groove 15 of the connector 2 is engaged with the protrusion 14 of the slider 12, and then the locking member 13 is tightened to fix the installation between the slider 12 and the connector 2. By providing a snap-fit ​​member 18 on the brush head 3 assembly and a snap-fit ​​groove 17 on the slider 12 that engages with the snap-fit ​​member 18, the distance between the two symmetrical sliders 12 can be adjusted to accommodate drive devices 20 of different widths. Furthermore, the number of snap-fit ​​members 18 and snap-fit ​​grooves 17 is not limited; those skilled in the art can adjust them according to actual needs, for example, by setting two, four, etc.

[0061] Example 2

[0062] The second embodiment has some of the same structure as the first embodiment, so it will not be described again in this embodiment. The difference is the specific structure of the connector 2 and the limiting member 10.

[0063] like Figure 7 , Figure 8 As shown, in this embodiment, the drive device 20 can also be detachably connected to the brush head 3 assembly directly via the connector 2. In this case, the connector 2 is provided with a snap-fit ​​groove 17 that engages with the snap-fit ​​member 18. The fastener is threadedly connected to the connector 2, passing through the connector 2 and abutting against the end face of the brush head 3 assembly. That is, the fastener passes through the second end face 8 of the connector 2 and abuts against the connecting frame of the brush head 3 assembly. Direct detachable connection between the connector 2 and the brush head 3 assembly reduces assembly difficulty and facilitates quick installation and disassembly.

[0064] like Figure 8 , Figure 9As shown, in this embodiment, a portion of the limiting member 10 passes through the side end face of the fixing member 1 and is rotatably connected to the connecting member 2. The limiting member 10 is slidably connected to the fixing member 1. Specifically, the fixing member 1 is provided with a through hole, and the first end of the rotating member is provided with a rotating hole. The rotating shaft 11 on the limiting member 10 passes through the through hole and is inserted into the rotating hole of the connecting member 2. An elastic member, which is a tension spring, is provided between the fixing member 1 and the limiting member 10. The elastic member has a force that drives the limiting member 10 to move toward the connecting member 2. Under the action of the elastic member, the limiting member 10 is always driven to move toward the connecting member 2, thereby ensuring that the connecting member 2 remains stable when rotating. When it is necessary to remove the connecting member 2, the limiting member 10 is pulled outward, so that the rotating shaft 11 of the limiting member 10 is disengaged from the rotating connection between it and the rotating hole of the connecting member 2, and the connecting member 2 can be quickly removed from the fixing member 1. When installing connector 2, after pulling out the limiting member 10, insert the first end of connector 2 into the groove 19. After releasing the limiting member 10, the limiting member 10 moves inward under the action of the elastic member. When the limiting member 10 abuts against the fixing member 1, the rotating shaft 11 passes through the fixing member 1 and is rotatably connected to connector 2. In some other embodiments, the elastic member can also be a disc spring. In some other embodiments, the number of elastic members is not limited, and can be one, two, etc.

[0065] like Figure 8 As shown, in this embodiment, the side end face of the fixing member 1 extends towards the limiting member 10 and an extension member is provided, and a groove 22 is formed between two adjacent extension members. Figure 9 As shown, the limiting member 10 has a protrusion 21 that mates with the slot 22. When installing the limiting member 10, the protrusion 21 of the limiting member 10 engages with the slot 22 to secure it, improving the stability of the limiting member 10 and preventing circumferential rotation during operation. When the connecting member 2 needs to be disassembled, the limiting member 10 is pulled outwards, disengaging the rotating shaft 11 of the limiting member 10 from the connecting member 2. Then, the limiting member 10 is rotated circumferentially, causing the protrusion 21 of the limiting member 10 to abut against the extension on the fixing member 1. At this time, the limiting member 10 remains fixed under the action of the elastic element, making it easier to disassemble and install the connecting member 2. After the connecting member 2 is installed in place, the limiting member 10 is rotated, and under the action of the elastic element, the protrusion 21 of the limiting member 10 engages with the slot 22, and the rotating shaft 11 of the limiting member 10 is inserted into the rotating hole of the connecting member 2. In some other embodiments, the slot 22 may also be a groove recessed into the side end face of the fixing member 1 facing the connecting member 2. In some other embodiments, the limiting member 10 may also be provided with a slot 22, and the fixing member 1 may be provided with a protrusion 21.

[0066] like Figure 10As shown, in the embodiment, the two ends of the driving device 20 in the length direction are connected with the fixing piece 1 through bolts, and the groove 19 of the fixing piece 1 is open upward. The first end of the connecting piece 2 is inserted into the groove 19, and the limiting piece 10 is rotationally connected with the connecting piece 2 after passing through the fixing piece 1. At this time, the limiting piece 10 is threadedly connected with the fixing piece 1, and the rotating shaft 11 of the limiting piece 10 is rotationally connected with the connecting piece 2. The clamping groove 17 on the connecting piece 2 is slidingly connected with the clamping piece 18 of the brush head 3 assembly, and then the bolt passes through the connecting piece 2 and abuts against the end face of the connecting frame of the brush head 3 assembly.

[0067] The installation mode of the photovoltaic cleaning robot: the driving device 20 can walk on the photovoltaic panel, and the two sides of the front end of the driving device 20 are respectively provided with the fixing piece 1 through bolts. The groove 19 of the fixing piece 1 is open upward, and the accommodating cavity 9 of the connecting piece 2 is open downward. The first end of the connecting piece 2 is inserted into the groove 19, the limiting piece 10 is threadedly connected with the fixing piece 1, and the rotating shaft 11 of the limiting piece 10 is rotationally connected with the connecting piece 2 after passing through the fixing piece 1. At this time, the connecting piece 2 abuts against the abutting piece 5 and the bent section 7 of the fixing piece 1 under the action of gravity. There is a certain distance between the end of the bent section 7 and the second end face 8. The clamping piece 18 of the connecting frame of the brush head 3 assembly is slidingly connected into the clamping groove 17 on the connecting piece 2, and the fastener is abutted against the clamping piece 18 after passing through the second end face 8 of the connecting piece 2.

[0068] The working principle of the photovoltaic cleaning robot: in the initial state, the connecting piece 2 abuts against the abutting piece 5 and the bent section 7 of the fixing piece 1, and the abutting piece 5 and the bent section 7 support the connecting piece 2. When the photovoltaic panel is encountered, since the photovoltaic frame is slightly higher than the photovoltaic panel, when the brush head 3 is rotated onto the photovoltaic frame, the connecting piece 2 will be rotated upward with the rotating shaft 11 of the limiting piece 10 as the center, thereby driving the brush head 3 to lift upward, so that the brush head 3 rolls past the photovoltaic frame.

[0069] Obviously, the above embodiment is only an example for clearly illustrating, and is not a limitation to the implementation. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the implementation is not required and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A connection structure characterized by comprising: The connecting structure comprises: A fixing part (1) provided with a groove (19) with one side open, configured to be connected with a driving device (20); A connecting part (2) with a first end rotatably arranged in the groove (19) and a second end used to connect a brush head (3), which swings in a vertical plane; When the brush head (3) does not touch the photovoltaic frame, the connecting part (2) abuts against the end face of one side of the groove (19), and when the brush head (3) touches the photovoltaic frame, the brush head (3) drives the connecting part (2) to rotate upward in the groove (19) with the rotation point as the center, so that the brush head (3) passes over the obstacle.

2. The connection structure according to claim 1, characterized in that The opening of the groove (19) is arranged on the upper end face of the fixing part (1), and the first end of the connecting part (2) is inserted into the groove (19) along the vertical direction.

3. The connection structure according to claim 2, characterized in that The lower end face of the groove (19) is provided with a channel (4) for dust or liquid outflow.

4. The connection structure according to claim 2, characterized by The fixing part (1) is provided with an abutting part (5) extending upward along the vertical direction, and the connecting part (2) has a first end face (6) in abutting contact with the abutting part (5), which is used to limit the swing angle of the connecting part (2) when the brush head (3) does not touch the photovoltaic frame.

5. The connection structure according to claim 4, characterized in that The lower end face of the connecting part (2) is recessed upward to form a containing cavity (9), the first end face (6) is a side end face of the containing cavity (9) facing the first end of the connecting part (2), and the abutting part (5) is arranged in the containing cavity (9).

6. The connection structure according to claim 5, characterized in that The upper end of the abutting part (5) is provided with a bent section (7) extending away from the first end face (6) along the horizontal direction, the containing cavity (9) is provided with a second end face (8) in the extension direction of the bent section (7) for abutting against the end of the bent section (7), and the second end face (8) is arranged in a spaced manner with the bent section (7) when the brush head (3) does not touch the photovoltaic frame. When the connecting part (2) rotates upward by a certain angle, the second end face (8) abuts against the end of the bent section (7).

7. The connection structure according to any one of claims 1 to 6, characterized in that, A limiting part (10) is detachably arranged on the fixing part (1) along the horizontal direction, one end of the limiting part (10) has a rotating shaft (11) which passes through the fixing part (1) and is rotatably connected with the first end of the connecting part (2).

8. The connection structure according to claim 7, characterized by The limiting part (10) is slidably connected with the fixing part (1), the fixing part (1) is provided with an elastic part, one end of the elastic part is connected with the limiting part (10), and the elastic part has a force for driving the limiting part (10) to move towards the connecting part (2).

9. The connection structure according to claim 8, characterized in that The side end face of the fixing part (1) facing the limiting part (10) is provided with a plurality of clamping grooves (22), and the limiting part (10) has protrusions (21) matched with the clamping grooves (22).

10. The connection structure according to any one of claims 1 to 6, wherein The second end of the connecting piece (2) is provided with a sliding piece (12) slidably arranged in the vertical direction, the sliding piece (12) is used for detachable connection with the brush head (3), the connecting piece (2) is provided with a locking piece (13) for limiting the sliding piece (12).

11. The connection structure according to claim 10, wherein The end of the second end of the connecting piece (2) is provided with a sliding groove (15) in the vertical direction, the sliding piece (12) is provided with a protrusion (14) extending towards the sliding groove (15), and the protrusion (14) is slidably arranged in the sliding groove (15).

12. The connection structure according to claim 11, wherein At least one adjusting hole (16) is provided on the outer side surface of the second end of the connecting piece (2), the adjusting hole (16) is communicated with the sliding groove (15), and one end of the locking piece (13) is connected with the protrusion (14) after penetrating through the sliding groove (15).

13. The connection structure according to claim 12, characterized by The adjusting hole (16) is a long hole arranged in the vertical direction.

14. A photovoltaic cleaning robot, characterized in that Comprise: A driving device (20) and a brush head (3) assembly, the driving device (20) is provided with the connecting structure in any one of claims 1-13, and the brush head (3) assembly is detachably connected with the connecting piece (2) or the sliding piece (12).

15. The photovoltaic cleaning robot according to claim 14, characterized in that The brush head (3) assembly is provided with a clamping piece (18) in the horizontal direction, the sliding piece (12) is provided with a clamping groove (17) slidably connected with the clamping piece (18), and a fastener is abutted to the clamping piece (18) after penetrating through the sliding piece (12) to limit the sliding piece (12).

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