CN220440651U - Cleaning device for photovoltaic array panel - Google Patents

Abstract

The utility model relates to the technical field of maintenance of photovoltaic array panels, and provides a cleaning device of a photovoltaic array panel, which comprises: the expansion frame is suitable for being arranged at least one end of the first photovoltaic array panel along the arrangement direction of the first photovoltaic array panel; the first cleaning component is movably arranged on the expansion frame and can move along the arrangement direction of the first photovoltaic array panel so as to clean the first photovoltaic array panel; one of the force providing piece and the force detecting piece is arranged on the expansion frame, and the other one of the force providing piece and the force detecting piece is arranged on the first cleaning component; the force detection piece is used for detecting that the force providing piece provides force, and when the force is greater than or equal to a preset value, the force detection piece sends out detection signals to determine the position of the first cleaning assembly on the expansion frame. The position detection stability and reliability of the cleaning assembly can be improved, and the problem that the cleaning assembly is inaccurate in position detection is solved.

Description

Cleaning device for photovoltaic array panel

Technical Field

The utility model relates to the technical field of maintenance of photovoltaic array panels, in particular to a cleaning device for a photovoltaic array panel.

Background

Along with the wide popularization and application of the photovoltaic power generation technology, the photovoltaic array panel needs to be cleaned in the use process of the photovoltaic array panel so as to ensure the illumination intensity of the photovoltaic array panel and further ensure the power generation efficiency of the photovoltaic array panel.

In the related art, a plate-hanging type cleaning robot is generally adopted to clean and maintain a photovoltaic panel, the cleaning robot is connected with the side edge of the photovoltaic panel through a change gear and moves along the arrangement direction of the photovoltaic panel to clean, after cleaning is completed, the position of the cleaning robot is detected through a photoelectric sensor, and the cleaning robot is stopped at one side of the arrangement direction of the photovoltaic panel.

However, the stability and reliability of the position detection of the cleaning robot in the related art are poor, so that the position detection of the robot is inaccurate, and a certain potential safety hazard exists.

Disclosure of Invention

The utility model provides a cleaning device for a photovoltaic array panel, which is used for solving the problem of poor position detection stability and reliability of a cleaning robot in the prior art, and can accurately judge the position of the cleaning robot and improve the safety of the cleaning robot.

The utility model provides a cleaning device of a photovoltaic array panel, comprising:

the expansion frame is suitable for being arranged at least one end of the first photovoltaic array panel along the arrangement direction of the first photovoltaic array panel;

the first cleaning component is movably arranged on the expansion frame and can move along the arrangement direction of the first photovoltaic array panel so as to clean the first photovoltaic array panel;

one of a force providing piece and a force detecting piece is arranged on the expansion frame, and the other one of the force providing piece and the force detecting piece is arranged on the first cleaning component; the force detection piece is used for detecting the force provided by the force providing piece, and when the force is greater than or equal to a preset value, the force detection piece sends out a detection signal so as to determine the position of the first cleaning assembly on the expansion frame.

According to the cleaning device of the photovoltaic array panel provided by the utility model, the force providing piece comprises a first stop block, and the force detecting piece comprises a contact type position switch;

and/or the number of the groups of groups,

the force providing member includes a magnetic member and the force detecting member includes a hall switch. According to the cleaning device for the photovoltaic array panel, the contact type position switch is located on the outer side of the first cleaning component.

According to the cleaning device for the photovoltaic array panel provided by the utility model, the contact type position switch protrudes out of the surface of the first cleaning component.

According to the cleaning device for the photovoltaic array panel, the force detection pieces comprise a plurality of force detection pieces, and the force detection pieces are arranged at intervals along the moving direction of the first cleaning assembly.

According to the cleaning device for the photovoltaic array panel, the detection head of the contact type position switch is provided with the rolling piece.

According to the cleaning device for the photovoltaic array panel, the second stop block is arranged on the expansion frame and is arranged on a travelling wheel travelling path of the first cleaning assembly, and the second stop block is used for blocking the travelling wheel from moving towards the direction deviating from the first photovoltaic array panel; the second stop block is positioned on one side of the trigger point, which is opposite to the first photovoltaic array panel, and is provided with a trigger point between the force providing piece and the force detecting piece.

According to the cleaning device for the photovoltaic array panel provided by the utility model, the cleaning device for the first photovoltaic array panel further comprises: the second cleaning assembly is arranged on the expansion frame, is positioned above the first cleaning assembly, and is contacted with the upper surface of the first cleaning assembly when the first cleaning assembly moves to the expansion frame; at least a portion of the second cleaning assembly may extend to a side of the first cleaning assembly facing the first photovoltaic array panel along a direction of movement of the first cleaning assembly when the first cleaning assembly stops moving.

According to the cleaning device for the photovoltaic array panel provided by the utility model, the second cleaning assembly comprises:

the support piece is connected with the expansion frame;

the cleaning piece is arranged on the supporting piece, and the extending direction of the cleaning piece is not parallel to the moving direction of the first cleaning component; the first cleaning component is provided with a second photovoltaic array panel, and the length of the cleaning piece is greater than or equal to the arrangement length of the second photovoltaic array panel.

According to the cleaning device for the photovoltaic array panel, the extending direction of the cleaning piece is inclined relative to the moving direction of the first cleaning component.

According to the cleaning device for the photovoltaic array panel, provided by the utility model, the cleaning piece is movably arranged on the supporting piece, and the cleaning assembly further comprises a driving piece which is connected with the cleaning piece;

the driving piece is used for driving the cleaning piece to move along a third direction so as to clean the second photovoltaic array panel, and the third direction is not parallel to the extending direction of the cleaning piece;

or the driving piece is used for driving the cleaning piece to rotate around the supporting piece, and the rotation plane of the cleaning piece is consistent with the light receiving surface of the second photovoltaic array panel.

According to the cleaning device for the photovoltaic array panel, the cleaning pieces comprise a plurality of cleaning pieces, and the cleaning pieces are arranged at intervals along the moving direction of the first cleaning piece.

The utility model provides a cleaning device for a photovoltaic array panel, which is characterized in that an expansion frame is arranged at least one end of the arrangement direction of a first photovoltaic array panel, a first cleaning assembly is movably arranged on the expansion frame, and the first cleaning assembly moves or moves along the arrangement direction of the first photovoltaic array panel; therefore, when the first photovoltaic array panel needs to be cleaned, the first cleaning assembly moves along the arrangement direction of the first photovoltaic array panel, so that dust, sediment, leaves or other various covers on the first photovoltaic array panel are cleaned, the surface of the first photovoltaic array panel is ensured to be clean, the intensity of sunlight which can be received by the first photovoltaic array panel is ensured, and the power generation efficiency of the first photovoltaic array panel is improved; in addition, after the first photovoltaic array panel is cleaned, the first cleaning assembly can move and stop to the first expansion frame, so that the condition that the first cleaning assembly blocks or shields sunlight on the first photovoltaic array panel is avoided, the uniformity of the illumination received by the first photovoltaic array panel is ensured, and the first photovoltaic array panel can be effectively protected.

In addition, by providing one of the force providing member and the force detecting member on the expansion bracket, the other of the force providing member and the force detecting member is provided on the first cleaning assembly; when the first cleaning component moves to the expansion frame, the force detection part detects the force provided by the force providing part, and when the force provided by the force providing part is greater than or equal to a preset value, the force detection part triggers a signal so as to confirm that the position of the first cleaning component is positioned on the expansion frame, thereby being convenient for determining the control time of the movement state of the first cleaning component; compared with the prior art, the accuracy, reliability and stability of the position detection of the first cleaning component are improved, the movement of the first cleaning component can be stopped timely and accurately, and dangerous situations are avoided.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a cleaning device for a photovoltaic array panel according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a partial enlarged structure at A in FIG. 1;

FIG. 3 is a schematic view of a partial enlarged structure at B in FIG. 2;

FIG. 4 is a simplified view of a photovoltaic array panel cleaning apparatus according to an embodiment of the present utility model;

FIG. 5 is another simplified view of a photovoltaic array panel cleaning apparatus provided by an embodiment of the present utility model;

fig. 6 is a further simplified view of a photovoltaic array panel cleaning apparatus according to an embodiment of the present utility model.

Reference numerals:

10: a first photovoltaic array panel;

100: expanding the frame; 200: a first cleaning assembly; 300: a second cleaning assembly;

101: a photovoltaic power generation panel unit; 110: a first stopper; 120: a second stopper; 210: a contact position switch; 220: a walking wheel; 230: a frame; 240: a cleaning roller; 260: a change gear; 270: a second photovoltaic array panel; 310: a support; 320: a cleaning member;

211: a detection head; 212: a rolling member.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Fig. 1 is a schematic overall structure of a cleaning device for a photovoltaic array panel according to an embodiment of the present utility model, and fig. 2 is a schematic enlarged partial structure at a in fig. 1.

In order to solve the technical problems in the prior art, referring to fig. 1 and 2, an embodiment of the present utility model provides a cleaning device for a photovoltaic array panel, including: an extension rack 100 and a first cleaning assembly 200.

Specifically, in the embodiment of the utility model, the cleaning device of the photovoltaic array panel is mainly used for cleaning, cleaning or cleaning the light receiving surface of the photovoltaic array panel which is installed and arranged outdoors and is put into power generation. It will be appreciated that, in order to improve the utilization of sunlight, i.e. to improve the power generation efficiency, referring to fig. 1, a plurality of modularized photovoltaic power generation panel units 101 are generally arranged in an array to form a photovoltaic panel array, which in this embodiment is referred to as a first photovoltaic array panel 10.

Specifically, referring to fig. 1, in the embodiment of the present utility model, the first photovoltaic array panel 10 includes a plurality of photovoltaic power generation panel units 101 arranged side by side along a first direction (taking fig. 1 as an example, specifically, may refer to a direction along a z-axis shown in fig. 1; in a specific application, the first direction may also refer to a direction along an inclination or a height direction of the first photovoltaic array panel 10), where any two adjacent photovoltaic power generation panel units 101 are connected with a short side. In some alternative examples, any two adjacent photovoltaic power generation panel units 101 of the first photovoltaic array panel 10 along the first direction may be connected by a long side, and may specifically be selectively set according to actual needs, in this embodiment, two photovoltaic power generation panel units 101 are used as the first direction, and in the first direction, two photovoltaic power generation panel units 101 are exemplified as a specific example by connecting short sides.

With continued reference to fig. 1, in another alternative example of the present utility model, the first photovoltaic array panel 10 may also be arranged with a plurality of photovoltaic power generation panel units 101 along a second direction (taking fig. 1 as an example, specifically, may refer to a direction along the x-axis shown in fig. 1, and the second direction may also refer to an arrangement direction along a horizontal direction, an approximately horizontal direction, or a ground surface in a specific application), where any two adjacent photovoltaic power generation panel units 101 of the first photovoltaic array panel 10 along the second direction meet with a long side. In some alternative examples, any two adjacent photovoltaic power generation panel units 101 in the row of photovoltaic power generation panel units 101 along the second direction may be connected by a short side, and may be specifically and selectively set according to actual needs, and in the embodiment of the present utility model, any two adjacent photovoltaic power generation panel units 101 in the second direction are exemplified by being connected by a long side as a specific example.

When the photovoltaic power generation panel units 101 are arranged in an array, a supporting frame (not shown in the figure) is generally disposed on the ground according to different direct angles of sunlight, and the photovoltaic power generation panel units 101 are arranged on the supporting frame in a manner of having a certain inclination angle with respect to the horizontal plane. It will be appreciated that, in order to facilitate the installation and construction of the photovoltaic power generation panel units 101, a plurality of photovoltaic power generation panel units 101 are generally arranged in the horizontal direction.

In the embodiment of the present utility model, referring to fig. 1, the expansion frame 100 is disposed at least one end of the first photovoltaic array panel 10 along the arrangement direction of the first photovoltaic array panel 10 (i.e., the horizontal direction, taking fig. 1 as a specific example, the arrangement direction of the first photovoltaic array panel 10 may be the direction shown by the x-axis in fig. 1).

Specifically, in the embodiment of the present utility model, the expansion bracket 100 may be connected to the support frame. When specifically provided, the expansion bracket 100 may be detachably connected to the support bracket. In some examples, the expansion bracket 100 may also be a part of a supporting frame, that is, when the photovoltaic power generation panel unit 101 is arranged and installed on the supporting frame after the supporting frame is arranged and installed on the ground, a part of the supporting frame is reserved along at least one end of the arrangement direction of the first photovoltaic array panel 10, and the photovoltaic power generation panel unit 101 is not installed on the reserved part of the supporting frame, where the reserved part of the supporting frame serves as the expansion bracket 100.

It can be appreciated that, in the embodiment of the present utility model, the expansion bracket 100 may be disposed at one end of the first photovoltaic array panel 10 in the arrangement direction; in some examples, the expansion frame 100 may be disposed at both ends of the arrangement direction of the first photovoltaic array panel 10.

In the embodiment of the utility model, the first cleaning assembly 200 is movably disposed on the expansion frame 100, and the first cleaning assembly 200 can move along the arrangement direction of the first photovoltaic array panel 10. It should be noted that, in the embodiment of the present utility model, when the expansion frames 100 are disposed at two ends of the arrangement direction of the first photovoltaic array panel 10, one expansion frame 100 may be used as a parking area of the first cleaning assembly 200, and the other expansion frame 100 may be used as a transfer area where the first cleaning assembly 200 is folded back.

Specifically, the first cleaning assembly 200 may include a frame 230, a traveling wheel 220, a change gear 260, and a cleaning roller 240, and the frame 230 may be disposed along an inclined direction of the support frame, the expansion frame 100, or the first photovoltaic array panel 10; in some examples, it is also understood that the length direction of the first cleaning assembly 200 is disposed along the oblique direction of the first photovoltaic array panel 10, e.g., the length direction of the first cleaning assembly 200 is disposed along the direction shown by the z-axis in fig. 1. The travelling wheel 220 may be driven by a driving motor to move the frame 230, the change gear 260 and the cleaning roller 240. In the embodiment of the present utility model, the change gear 260 may be disposed at an end of the frame 230, and the peripheral wall of the change gear 260 is attached to the upper side of the supporting frame, so as to ensure the stability of the first cleaning assembly 200 in the running direction. It will be appreciated that the cleaning roller 240 may also be driven by a motor to rotate, so as to clean the light receiving surface of the first photovoltaic array panel 10. The motor for driving the cleaning roller 240 and the motor for driving the traveling wheel 220 may be different motors.

It can be appreciated that after the first cleaning assembly 200 moves along the arrangement direction of the first photovoltaic array panel 10 and cleans the first photovoltaic array panel 10, the first cleaning assembly 200 needs to return to the expansion frame 100, so as to avoid the situation that the first cleaning assembly 200 shields sunlight and causes uneven heating of the first photovoltaic array panel 10. In the embodiment of the present utility model, referring to fig. 1 and 2, one of the force providing member and the force detecting member is provided on the expansion bracket 100, and the other of the force providing member and the force detecting member is provided on the first cleaning assembly 200.

Specifically, in the embodiment of the present utility model, when the first cleaning assembly 200 moves onto the expansion bracket 100, the force providing member and the force detecting member approach or contact each other, so that the force providing member provides the force to the force detecting member.

As a specific example of an embodiment of the present utility model, the force providing member may be a member capable of generating an electric field, for example, two oppositely disposed polar plates, and the force detecting member may be an electrified body; when the first cleaning assembly 200 moves onto the expansion frame 100, the force detecting member receives the electric field force of the force providing member, and generates a detection signal, thereby determining the position of the first cleaning assembly 200 on the expansion frame 100. In a specific example of an embodiment of the present utility model, the force detecting member may specifically be an electric field strength sensor.

In some alternative examples of embodiments of the utility model, the force providing member may also be a magnetic member capable of generating a magnetic field, such as a magnet or electromagnet; the force sensing member may be a reed switch (which may also be referred to as a reed switch in some examples); in a specific application, when the first cleaning assembly 200 moves onto the expansion frame 100, the force detecting member and the force providing member are close to each other, and two magnetic reeds in the reed pipe serving as the force detecting member are contacted with each other under the magnetic force provided by the magnetic field, so that the circuit of the reed pipe is conducted, a corresponding detection signal is generated, and the position of the first cleaning assembly 200 on the expansion frame 100 is determined according to the detection signal.

It will be appreciated that in some alternative examples of embodiments of the utility model, a force provider may be provided on the expansion bracket 100, and correspondingly, a force detector may be provided on the first cleaning assembly 200; in alternative examples of embodiments of the present utility model, a force providing member may be provided on the first cleaning assembly 200 and a force detecting member may be provided on the expansion bracket 100.

In the embodiment of the utility model, by arranging the expansion frame 100 at least one end of the arrangement direction of the first photovoltaic array panel 10 and movably arranging the first cleaning component 200 on the expansion frame 100, the first cleaning component 200 moves or moves along the arrangement direction of the first photovoltaic array panel 10; in this way, when the first photovoltaic array panel 10 needs to be cleaned, the first cleaning assembly 200 moves along the arrangement direction of the first photovoltaic array panel 10, so that dust, silt, leaves or other various covers on the first photovoltaic array panel 10 are cleaned, the surface of the first photovoltaic array panel 10 is ensured to be clean, the intensity of sunlight which can be received by the first photovoltaic array panel 10 is ensured, and the power generation efficiency of the first photovoltaic array panel 10 is improved; in addition, after the first photovoltaic array panel 10 is cleaned, the first cleaning component 200 can move and stop on the first expansion frame 100, so that the condition that the first cleaning component 200 blocks or shields sunlight on the first photovoltaic array panel 10 is avoided, the uniformity of the first photovoltaic array panel 10 under illumination is ensured, and the first photovoltaic array panel 10 can be effectively protected.

In addition, by providing one of the force providing member and the force detecting member on the expansion bracket 100 and providing the other of the force providing member and the force detecting member on the first cleaning assembly 200; in this way, when the first cleaning assembly 200 moves onto the expansion frame 100, the force detecting member detects the force provided by the force providing member, and when the force provided by the force providing member is greater than or equal to a preset value, the force detecting member triggers a signal to confirm that the position of the first cleaning assembly 200 is located on the expansion frame 100, so as to facilitate determining the control opportunity of the movement state of the first cleaning assembly 200; compared with the related art, the accuracy, reliability and stability of the position detection of the first cleaning assembly 200 are improved, the movement of the first cleaning assembly 200 can be stopped timely and accurately, and dangerous situations are avoided. In some alternative examples of embodiments of the present utility model, as shown with reference to fig. 1 and 2, the force providing member includes a first stop 110 and the force detecting member includes a contact position switch 210.

In the embodiment of the present utility model, the contact type position switch 210 may be a travel switch, and the breaking circuit of the travel switch is broken by contacting the contact of the travel switch with the first stop block 110, so as to generate a first position signal, and determine the position of the first cleaning assembly 200 on the expansion bracket 100 according to the first position signal.

In another alternative example of the present utility model, the contact type position switch 210 may also be a point contact type switch, in this example of the present utility model, when the first cleaning assembly 200 moves onto the expansion frame 100, the contact point of the point contact type switch contacts the first stop block 110, the point contact type switch receives the force of the first stop block 110, the breaking circuit breaks, and a first position signal is generated, and the position of the first cleaning assembly 200 on the expansion frame 100 is determined through the first position signal.

In some alternative examples of embodiments of the present utility model, referring to fig. 1 and 2, a first stop 110 may be provided on the expansion bracket 100, and a contact position switch 210 may be provided on the first cleaning assembly 200. The first stop 110 is disposed at a position opposite to the position of the contact position switch 210 along the arrangement direction of the first photovoltaic array panel 10; after the first cleaning assembly 200 cleans the first photovoltaic array panel 10, when the first cleaning assembly 200 returns to the expansion frame 100, the first stop block 110 contacts with the contact position switch 210, so that the contact position switch 210 generates a first position signal, and the position of the first cleaning assembly 200 is accurately determined.

It will be appreciated that in alternative examples of embodiments of the present utility model, the contact position switch 210 may be disposed on the expansion bracket 100, and the first stop 110 may be disposed on the first cleaning assembly 200. That is, in the embodiment of the present utility model, the positions of the first stop 110 and the contact position switch 210 may be interchanged, so long as the contact position switch 210 and the first stop 110 can contact and trigger to generate the first position signal when the first cleaning assembly 200 moves onto the expansion bracket 100.

It can be appreciated that, in the embodiment of the present utility model, when the first stop 110 is disposed on the first cleaning assembly 200 and the contact position switch 210 is disposed on the expansion bracket 100, a position signal transmitting device (for example, a wired or wireless communication antenna) may also be disposed on the expansion bracket 100; correspondingly, a position signal receiving device (such as a signal receiving antenna) is further arranged on the first cleaning component 200, when the first cleaning component 200 moves onto the expansion frame 100, the first stop block 110 is contacted with the contact type position switch 210, the contact type position switch 210 generates a first position signal, the position signal transmitting device on the expansion frame 100 transmits the first position signal to the position signal receiving device on the first cleaning component 200, and the controller on the first cleaning component 200 determines the position of the first cleaning component 200 through the received first position signal, so that the movement state (such as stop or reverse movement) of the travelling wheel 220 of the first cleaning component 200 is controlled. The power supply of the position signal transmitting device may be provided by the first photovoltaic array panel 10, and the power supply of the position signal receiving device may also be provided by the first photovoltaic array panel 10.

It should be noted that, when the first stopper 110 is disposed on the first cleaning assembly 200, the first stopper 110 may be manufactured by machining the frame 230 of the first cleaning assembly 200 as a part of the frame 230 of the first cleaning assembly 200. In other examples, the first stop 110 may be detachably connected to the frame 230 of the first cleaning assembly 200, specifically, fastened by a fastener, or may be fastened by a buckle or a slot.

In an alternative embodiment of the present utility model, based on the above embodiments, referring to fig. 2, the contact position switch 210 is located outside the first cleaning assembly 200.

It is understood that the contact type position switch 210 may be disposed on the surface of the first cleaning assembly 200, and the contact type position switch 210 may also be disposed on the expansion bracket 100. It is understood that when the touch position switch 210 is disposed on the expansion bracket 100, the projection of the touch position switch 210 along the arrangement direction of the first photovoltaic array panel 10 may be outside the first cleaning assembly 200.

In some alternative examples of embodiments of the present utility model, two contact position switches 210 may be provided, and two contact position switches 210 are located outside the first cleaning assembly 200 along the length direction of the first cleaning assembly 200 (e.g., the direction shown by the z-axis in fig. 1, and in a specific example, the direction of inclination of the first photovoltaic array panel 10). For example, when the contact position switches 210 are provided on the first cleaning assembly 200, two contact position switches 210 may be provided at both ends of the first cleaning assembly 200 in the length direction, respectively.

It is understood that in some examples, when the touch position switches 210 are disposed on the expansion bracket 100, the projections of the two touch position switches 210 along the moving direction of the first cleaning assembly 200 may be located at both ends of the length direction of the first cleaning assembly 200.

In this way, by providing the two contact position switches 210, the two contact position switches 210 are located at the outer side or two ends of the first cleaning assembly 200 along the length direction of the first cleaning assembly 200, so that the positions of the two ends along the length direction when the first cleaning assembly 200 moves can be accurately determined, and dangerous situations caused by the skew of the first cleaning assembly 200 can be avoided.

It is further understood that, in particular arrangements, one of the two contact position switches 210 may be disposed on the first cleaning assembly 200 and the other of the two contact position switches 210 may be disposed on the expansion bracket 100.

By disposing the contact position switch 210 outside the first cleaning assembly 200, the contact position switch 210 may be directly connected to the frame 230 of the first cleaning assembly 200 or directly connected to the expansion frame 100 when the contact position switch 210 is installed, without disassembling and then installing the respective elements of the first cleaning assembly 200, thereby simplifying the installation process of the contact position switch 210.

Fig. 3 is a partially enlarged structural schematic diagram at B in fig. 2.

Based on the above embodiments, in the embodiment of the present utility model, referring to fig. 2 and 3, the contact position switch 210 protrudes from the surface of the first cleaning component 200.

For example, referring to fig. 2 and 3, in the embodiment of the present utility model, the contact position switch 210 may protrude from two end surfaces of the first cleaning assembly 200 along the length direction; in some examples, the touch position switch 210 may also protrude above the upper and lower surfaces of the first cleaning assembly 200; alternatively, in other examples of embodiments of the present utility model, the contact position switch 210 may also be two surfaces (e.g., two surfaces shown along the x-axis in fig. 1) protruding from the first cleaning assembly 200 in the direction of movement.

It will be appreciated that the touch position switch 210 may be disposed perpendicular to the surface of the first cleaning assembly 200 when specifically disposed. Of course, in some examples, the touch position switch 210 may be disposed at an angle to the surface of the first cleaning assembly 200. In the embodiment of the present utility model, the contact position switch 210 is only required to protrude from the surface of the first cleaning assembly 200 and can contact the first stop block 110 disposed on the expansion bracket 100.

In the embodiment of the utility model, the contact type position switch 210 is arranged on the surface of the first cleaning assembly 200, when the first cleaning assembly 200 moves to the expansion frame 100, the contact type position switch 210 contacts with the first stop block 110 to generate the first position signal, and the first position signal can be directly transmitted to the first cleaning assembly 200, so that the connecting elements are reduced, and the information transmission efficiency is improved.

Based on the above embodiments, in the embodiment of the present utility model, with continued reference to fig. 2, the contact position switches 210 include a plurality of contact position switches 210 that are arranged at intervals along the moving direction of the first cleaning assembly 200 (in some examples, may also be understood as the width direction of the first cleaning assembly 200).

As a specific example, referring to fig. 2, two contact position switches 210 may be provided, two contact position switches 210 being provided on an end surface of the first cleaning assembly 200 in the length direction, and the two contact position switches 210 being arranged in the moving direction of the first cleaning assembly 200.

It will be appreciated that in other examples of embodiments of the present utility model, two contact position switches 210 may be provided on either the upper or lower surface of the first cleaning assembly 200.

In the embodiment of the present utility model, two contact position switches 210 are arranged on the first cleaning assembly 200 at intervals along the moving direction of the first cleaning assembly 200, a certain interval is provided between the two contact position switches 210, when the first cleaning assembly 200 moves onto the expansion frame 100, the contact between the two contact position switches 210 and the first stop block 110 has a time sequence, and the first position signals generated by the two contact position switches 210 also have a time difference. The first cleaning assembly 200 may further be provided with a processing executing element (for example, a central processing unit, a control unit, a single chip microcomputer, a field gate array, etc.) for processing signals, where the processing executing element receives a first position signal a sent by one of the contact position switches 210 first, the first position signal a may be used as a position prompting signal for the first cleaning assembly 200 to enter the expansion frame 100, and the processing executing element controls the travelling wheel 220 of the first cleaning assembly 200 according to the first position signal a, for example, may be a driving motor for controlling the travelling wheel 220 to travel to decelerate. In addition, the processing executing element receives the first position signal b sent by the other contact position switch 210, and the processing executing element controls the driving motor to stop according to the first position signal b, that is, when the processing executing element receives the first position signal for the first time, the processing executing element controls the driving motor to slow down, so that the first cleaning assembly 200 is slowed down; and when the processing executing element receives the first position signal for the second time, the driving motor is controlled to stop.

It will be appreciated that in alternative examples of embodiments of the present utility model, the processing executing element may also control the driving motor to stop and operate reversely when receiving the first position signal for the second time; thereby driving the first cleaning assembly 200 to reversely move from the expansion frame 100 to the first photovoltaic array panel 10, and cleaning the first photovoltaic array panel 10 again.

It should be further appreciated that, in other alternative examples of the embodiment of the present utility model, the two contact position switches 210 may be arranged on the expansion frame 100 at intervals along the moving direction of the first cleaning element, and in addition, the corresponding first stop 110 is disposed on the first cleaning assembly 200, where the two contact position switches 210 maintain a certain distance. It should be noted that, the two first contact switches are disposed on the expansion bracket 100 in the same or similar manner as the first cleaning assembly 200, and reference may be made to the detailed description of the two first contact position switches 210 disposed on the first cleaning assembly 200 in the foregoing embodiment of the present utility model, which is not repeated in the embodiments of the present utility model.

In the embodiment of the utility model, the plurality of contact position switches 210 are arranged at intervals along the moving direction of the first cleaning assembly 200, when the first cleaning assembly 200 moves onto the expansion frame 100, due to the fact that intervals exist among the plurality of contact position switches 210, the time sequence of first position signals generated by the contact of the plurality of contact position switches 210 and the first stop block 110 can be precisely determined through the first position signals with different time, the first cleaning assembly 200 can be decelerated, stopped or reversely moved through the plurality of different first position signals, the buffer time from the rotating state to the stopping state of the driving motor of the first cleaning assembly 200 is given, and the protection of the driving motor is realized.

In addition, the situation that the first cleaning assembly 200 is directly suddenly braked and the first cleaning assembly 200 falls off from the expansion frame 100 under the inertia effect can be avoided, and the first cleaning assembly 200 is well protected.

On the basis of the above embodiments, in the embodiment of the present utility model, referring to fig. 3, the detection head 211 of the contact position switch 210 is provided with the rolling member 212.

Specifically, the rolling member 212 may be a roller, a ball, or a ball head. It can be appreciated that, when the detection head 211 of the contact position switch 210 contacts the first stop 110 and triggers the first position signal, the driving motor of the first cleaning assembly 200 stops running, and the first cleaning assembly 200 may also move a small distance under the driving of inertia; in the embodiment of the present utility model, the rolling element 212 is disposed on the detection head 211, and when the first cleaning assembly 200 moves to the expansion frame 100 and the rolling element 212 on the contact position switch 210 contacts the first stop block 110, the rolling element 212 rolls on the first stop block 110 in the contact process of the detection head 211 and the first stop block 110, so that the friction force between the detection head 211 and the first stop block 110 can be effectively reduced. It will be appreciated that in embodiments of the present utility model, the rolling member 212 may be rotatably or rollably coupled to the detection head 211 of the contact position switch 210.

In the embodiment of the utility model, the rolling element 212 is disposed on the detecting head 211 of the contact type position switch 210, when the first cleaning assembly 200 moves to the expansion frame 100, the detecting head 211 of the contact type position switch 210 contacts with the first stop block 110, and the sliding friction force between the detecting head 211 and the first stop block 110 is converted into the rolling friction force by the rolling of the rolling element 212, so that the friction force between the detecting head 211 and the first stop block 110 is reduced, and the detecting head 211 of the contact type position switch 210 can be effectively protected.

Based on the above embodiments, in the embodiment of the present utility model, referring to fig. 1, the expansion frame 100 is further provided with a second stop block 120, where the second stop block 120 is disposed on the traveling path of the traveling wheel 220 of the first cleaning assembly 200, the second stop block 120 is used to stop the traveling wheel 220 from moving in a direction away from the first photovoltaic array panel 10, the first stop block 110 and the contact position switch 210 have a trigger point, and the second stop block 120 is located on a side of the trigger point away from the first photovoltaic array panel 10.

The connection manner between the second block 120 and the expansion frame 100 and the connection manner between the first block 110 and the expansion frame 100 are similar, and specific reference may be made to the detailed description of the connection between the first block 110 and the expansion frame 100 in the foregoing embodiment of the present utility model, which is not repeated herein.

It should be noted that, when the contact position switch 210 contacts the first stop 110, the state of the contact position switch 210 changes after receiving the force of the first stop 110, the contact position switch 210 is turned off to generate a first position signal, the processing executing element on the first cleaning assembly 200 controls the first cleaning assembly 200 to stop moving according to the first position signal, and when the contact position switch 210 generates the first position signal, the detecting head 211 contacts the first stop 110, and the position point of the trigger signal is the trigger point.

In a specific example, when the first cleaning assembly 200 moves onto the expansion bracket 100, the contact position switch 210 of the first cleaning assembly 200 and the first stopper 110 are contacted at the trigger point, the contact position switch 210 sends a first position signal, and the traveling wheel 220 of the first cleaning assembly 200 stops moving, so that the first cleaning assembly 200 stops moving.

It can be appreciated that in some cases, when the first cleaning assembly 200 does not stop after passing the trigger point, the second stop 120 continues to move along the direction away from the first photovoltaic array panel 10 (for example, the contact position switch 210 fails), and at this time, the second stop 120 stops further movement of the travelling wheel 220 on the travelling path of the travelling wheel 220 of the first cleaning assembly 200, so as to avoid the first cleaning assembly 200 from moving further and separating from the expansion frame 100, i.e., the second stop 120 plays a role in protecting the first cleaning assembly 200 in a second stage, so that the first cleaning assembly 200 can be effectively protected from being damaged, and safety of the first cleaning assembly 200 when cleaning the first photovoltaic array panel 10 is improved.

Fig. 4 is a simplified view of a cleaning device for a photovoltaic array panel according to an embodiment of the present utility model.

On the basis of the above embodiments, in the embodiment of the present utility model, referring to fig. 1 and 4, the cleaning device for a photovoltaic array panel further includes a second cleaning assembly 300, where the second cleaning assembly 300 is disposed on the expansion frame 100.

Specifically, the second cleaning assembly 300 is detachably disposed on the expansion bracket 100. In some alternative examples, a connecting rod may be disposed between the second cleaning assembly 300 and the expansion frame 100, and the second cleaning assembly 300 and the expansion frame 100 may be connected by using the connecting rod, and the connection manner may be fastened by using a fastener, or may be clamped by using a fastening slot.

In an embodiment of the present utility model, the second cleaning assembly 300 is above the first cleaning assembly 200. Specifically, referring to fig. 1, in the embodiment of the present utility model, the second cleaning assembly 300 is located on a side of the first cleaning assembly 200 facing away from the first photovoltaic array panel 10 along the y direction (which may also be understood as a direction perpendicular to the light receiving surface of the first photovoltaic array panel 10) in fig. 1.

In a specific example, when the first cleaning assembly 200 moves onto the expansion bracket 100, the second cleaning assembly 300 contacts the upper surface of the first cleaning assembly 200, and when the first cleaning assembly 200 stops moving on the expansion bracket 100, the second cleaning assembly 300 may extend at least partially to a side of the first cleaning assembly 200 facing the first photovoltaic array panel 10 in the moving direction of the first cleaning assembly 200.

Specifically, referring to fig. 1 and 4, in the embodiment of the present utility model, the first cleaning assembly 200 moves on the expansion frame 100 in a direction away from the first photovoltaic array panel 10, and the second cleaning assembly 300 moves relative to the first cleaning assembly 200 through the contact between the second cleaning assembly 300 and the upper surface of the first cleaning assembly 200, so that the second cleaning assembly 300 can sweep the impurity dust on the upper surface of the first cleaning assembly 200, thereby cleaning the upper surface of the first cleaning assembly 200.

Specifically, as illustrated in fig. 1 as a specific example, the first cleaning assembly 200 may specifically be movable on the first photovoltaic array panel 10 along the direction shown in the x-axis in fig. 1, and when the first cleaning assembly 200 is moved onto the expansion frame 100, for example, when the first cleaning assembly 200 is moved onto one expansion frame 100 in the positive x-axis direction, at least part of the second cleaning assembly 300 may be directed/facing one side of the first cleaning assembly 200 in the negative x-axis direction.

In other alternative examples, a guide rail and a push-pull device may be disposed on the expansion frame 100, the second cleaning assembly 300 is movably connected to the guide rail, the second cleaning assembly 300 is connected to the push-pull device, and the push-pull device drives the second cleaning assembly 300 to make a translational motion on the guide rail, where the translational motion of the second cleaning assembly 300 may be performed simultaneously with the moving process of the first cleaning assembly 200 on the expansion frame 100, or may be performed after the first cleaning assembly 200 stops on the expansion frame 100.

It should be noted that the moving direction of the second cleaning assembly 300 may be parallel to the moving direction of the first cleaning assembly 200, may be perpendicular to the moving direction of the first cleaning assembly 200, or, in some examples, the moving direction of the second cleaning assembly 300 may be disposed obliquely with respect to the moving direction of the first cleaning assembly 200. In other words, in the embodiment of the present utility model, the push-pull device is used as a driving member to drive the second cleaning assembly 300, so that the second cleaning assembly 300 moves along the third direction. The third direction may be parallel to, perpendicular to, or inclined at a certain angle to the moving direction of the first cleaning assembly 200; that is, in the embodiment of the present utility model, the third direction may coincide with the first direction in the foregoing embodiment of the present utility model, or the third direction coincides with the second direction; alternatively, in other examples, the third direction is at an angle to both the first direction and the second direction.

It can be understood that in the embodiment of the utility model, the push-pull device can be a cylinder, an electric push rod, a piston cylinder or a linear motor; in some examples, the push-pull device may also be a lead screw. In other alternative examples, the push-pull device may also be a driving motor that drives the second cleaning assembly 300 through a gear-rack fit; additionally, in some examples, the push-pull device may also be a drive motor that cooperates with a gear, belt, chain, or the like to drive the second cleaning assembly 300. It is also understood that the direction of extension of the second cleaning assembly 300 may be non-parallel (e.g., perpendicular or at an angle) to the third direction.

In another alternative example of the present utility model, the expansion frame 100 may be further connected to a connecting rod, a rotating shaft is disposed on the connecting rod, the second cleaning assembly 300 is connected to the rotating shaft, the second cleaning assembly 300 is movably disposed on the rotating shaft, the second cleaning assembly 300 may perform a rotational motion about the rotating shaft, when the first cleaning assembly 200 moves onto the expansion frame 100, the second cleaning assembly 300 contacts with the upper surface of the first cleaning assembly 200, and the rotating shaft drives the second cleaning assembly 300 to rotate, so that the sundry dust on the upper surface of the first cleaning assembly 200 may be cleaned. It should be noted that the cleaning process may be performed simultaneously with the movement of the first cleaning assembly 200 on the expansion bracket 100, or may be performed after the first cleaning assembly 200 is stopped on the expansion bracket 100.

In the embodiment of the present utility model, by disposing the second cleaning component 300 on the expansion frame 100, the second cleaning component 300 is disposed above the first cleaning component 200, when the first cleaning component 200 moves onto the expansion frame 100, the second cleaning component 300 contacts with the upper surface of the first cleaning component 200, and when the first cleaning component 200 stops moving, at least part of the second cleaning component 300 may extend to a side of the first cleaning component 200 facing the first photovoltaic array panel 10; thus, when the first cleaning assembly 200 moves on the expansion frame 100, or after the first cleaning assembly 200 stops on the expansion frame 100, the second cleaning assembly 300 moves relative to the first cleaning assembly 200, so that the upper surface of the first cleaning assembly 200 is cleaned, the cleaning of the upper surface of the first cleaning assembly 200 is ensured, the situation that dust and sundries are accumulated on the upper surface of the first cleaning assembly 200 to wet or corrode the first cleaning assembly 200 is avoided, and the service life of the first cleaning assembly 200 is effectively prolonged.

Based on the above embodiments, in an embodiment of the present utility model, referring to fig. 1, the second cleaning assembly 300 includes a support 310 and at least one cleaning member 320.

In the embodiment of the present utility model, the support member 310 is connected to the expansion bracket 100 in a detachable manner, for example, fastened by a fastener; the two ends of the connecting piece are connected with each other in a clamping way through a clamping groove; in other examples, the support 310 may also be integrally manufactured with the expansion bracket 100 as part of the expansion bracket 100, such as by casting, extrusion, casting, cold extrusion, hot extrusion, and the like.

In some alternative examples of embodiments of the present utility model, the driving member may specifically be driving the cleaning member 320, wherein the driving member may be disposed on the supporting member 310.

With continued reference to fig. 1, the cleaning member 320 and the supporting member 310 are detachably connected, and the cleaning member 320 and the supporting member 310 may be fastened by a fastener or may be fastened by a fastening slot.

Fig. 5 is another simplified view of a cleaning device for a photovoltaic array panel according to an embodiment of the present utility model, and fig. 6 is yet another simplified view of a cleaning device for a photovoltaic array panel according to an embodiment of the present utility model.

In the embodiment of the present utility model, referring to fig. 4 to 6, the extending direction of the cleaning member 320 is not parallel to the moving direction of the first cleaning assembly 200.

It will be appreciated that in embodiments of the present utility model, the driving mechanism of the first cleaning assembly 200 may utilize the electrical energy generated by the photovoltaic power generation of the first photovoltaic array panel 10 when the first cleaning assembly 200 moves along the first photovoltaic array panel 10. In some examples, the drive assembly of the first cleaning assembly 200 may also be powered by a wire using a power grid. Of course, it will be appreciated that in other examples of embodiments of the utility model, a secondary battery, such as a rechargeable battery, may be provided on the first cleaning assembly 200 to power the drive mechanism.

As a specific example of the embodiment of the present utility model, referring to fig. 1 and fig. 4 to fig. 6, a second photovoltaic array panel 270 may be further disposed on the surface of the first cleaning assembly 200, and the electric energy generated by the photovoltaic power generation of the second photovoltaic array panel 270 may provide the electric energy for the driving mechanism of the first cleaning assembly 200.

Specifically, in the embodiment of the present utility model, the second photovoltaic array panel 270 is disposed on the upper surface of the first cleaning component 200. Wherein the length of the cleaning member 320 is greater than or equal to the arrangement length of the second photovoltaic array panel 270; specifically, referring to fig. 6, the second photovoltaic array panel 270 may be arranged along the length direction of the first cleaning assembly 200, and the length of the cleaning member 320 is greater than or equal to the length of the second photovoltaic array panel 270 along the length direction of the first cleaning assembly 200. In embodiments of the present utility model, the cleaning member 320 may be a combination of one or more of a wipe, a brush, and a wiper strip.

In the embodiment of the utility model, the cleaning member 320 is disposed on the supporting member 310, and the second photovoltaic array panel 270 is disposed on the upper surface of the first cleaning assembly 200, so that solar energy can be converted into electric energy required by movement and cleaning of the first cleaning assembly 200 through the second photovoltaic array panel 270, the extending direction of the cleaning member 320 is not parallel to the moving direction of the first cleaning assembly 200, meanwhile, the length of the cleaning member 320 is greater than or equal to the arrangement length of the second photovoltaic array panel 270, when the first cleaning assembly 200 moves to the expansion frame 100, the contact and relative movement or displacement of the cleaning member 320 and the second photovoltaic array panel 270 can sweep out sundry dust on the second photovoltaic array panel 270, thereby ensuring the cleanness and light receiving uniformity of the second photovoltaic array panel 270 and ensuring the power generation efficiency of the second photovoltaic array panel 270.

As a specific example of the embodiment of the present utility model, the extending direction of the cleaning member 320 may be parallel to the length direction of the first cleaning assembly 200, that is, the extending direction of the cleaning member 320 is perpendicular to the moving direction of the first cleaning assembly 200. Thus, when the first cleaning assembly 200 is moved onto the expansion bracket 100, the cleaning member 320 can be moved from the side of the first cleaning assembly 200 facing away from the first photovoltaic array panel 10 to the side facing the first photovoltaic array panel 10 at the shortest distance; that is, the distance that the second photovoltaic array panel 270 needs to be moved for cleaning is effectively shortened, the space that the cleaning member 320 needs to occupy can be reduced, and raw materials that the expansion frame 100 and the second cleaning assembly 300 need to use are saved.

On the basis of the above-described embodiments, in the embodiment of the present utility model, referring to fig. 4 to 6, the extending direction of the cleaning member 320 is inclined with respect to the moving direction of the first cleaning assembly 200.

In the embodiment of the present utility model, referring to fig. 4 or 6, there are two inclined modes of the extending direction of the cleaning member 320 with respect to the moving direction of the first cleaning assembly 200: one is that the upper end of the cleaning member 320 is offset or inclined toward the first photovoltaic array panel 10, and the other is that the lower end of the cleaning member 320 is offset or inclined toward the first photovoltaic array panel 10.

Through the inclination setting of cleaning member 320 extending direction relative to the direction of motion of first subassembly 200 that cleans, when first subassembly 200 that cleans moves to expanding frame 100, the area of contact of the upper surface of first subassembly 200 that cleans and cleaning member 320 is the process that changes gradually from little to the turn-down, and the frictional force that first subassembly 200 upper surface received is from little to big promptly, and the actuating mechanism (for example driving motor) of first subassembly 200 that cleans can not bear too big load in the twinkling of an eye, has guaranteed the actuating mechanism of first subassembly 200 and has reliably moved, can effectively protect the actuating mechanism of first subassembly 200 that cleans.

In addition, the extending direction of the cleaning member 320 is inclined with respect to the moving direction of the first cleaning assembly 200, so that, referring to fig. 5, during the movement of the first cleaning assembly 200 onto the expansion frame 100, for example, in the positive x-axis direction of fig. 5, the inclined cleaning member 320 moves in the negative x-axis direction with respect to the first cleaning assembly 200, the inclined cleaning member 320 provides a friction force in the negative x-axis direction to the upper surface of the first cleaning assembly 200, and the cleaning member 320 also provides a friction force in the y-axis direction of fig. 5 (i.e., a friction force in the longitudinal direction of the first cleaning assembly 200) to the first cleaning assembly 200; the dust and the muddy water on the second photovoltaic array panel 270 are subjected to friction force in two directions, so that the dust and the muddy water on the second photovoltaic array panel 270 are more easily peeled off, and the second photovoltaic array panel 270 is conveniently cleaned.

On the basis of the above embodiments, in the embodiment of the present utility model, there are a plurality of cleaning members 320, and the plurality of cleaning members 320 are arranged at intervals along the moving direction of the first cleaning assembly 200.

Through the interval arrangement of the plurality of cleaning elements 320, when the first cleaning assembly 200 moves to the expansion frame 100, the upper surface of the first cleaning assembly 200 can be cleaned for multiple times, and the cleaning effect of the second photovoltaic array panel 270 on the first cleaning assembly 200 is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (12)

1. A cleaning device for a photovoltaic array panel, comprising:

the expansion frame (100) is suitable for being arranged at least one end of the first photovoltaic array panel (10) along the arrangement direction of the first photovoltaic array panel (10);

the first cleaning assembly (200) is movably arranged on the expansion frame (100), and the first cleaning assembly (200) can move along the arrangement direction of the first photovoltaic array panel (10) so as to clean the first photovoltaic array panel (10);

one of a force providing piece and a force detecting piece is arranged on the expansion frame (100), and the other one of the force providing piece and the force detecting piece is arranged on the first cleaning component (200); the force detection piece is used for detecting the force provided by the force providing piece, and when the force is greater than or equal to a preset value, the force detection piece sends out a detection signal to determine the position of the first cleaning assembly (200) on the expansion frame (100).

2. The cleaning device of a photovoltaic array panel according to claim 1, characterized in that the force providing member comprises a first stop (110), the force detecting member comprises a contact position switch (210);

and/or the number of the groups of groups,

the force providing member includes a magnetic member and the force detecting member includes a hall switch.

3. The cleaning device of a photovoltaic array panel according to claim 2, characterized in that the contact position switch (210) is located outside the first cleaning assembly (200).

4. A cleaning device for a photovoltaic array panel according to claim 3, characterized in that the contact position switch (210) protrudes from the surface of the first cleaning component (200).

5. The device for cleaning a photovoltaic array panel according to any one of claims 1 to 4, wherein the force detecting members include a plurality of force detecting members arranged at intervals along the moving direction of the first cleaning member (200).

6. A cleaning device for photovoltaic array panels according to any one of claims 2-4, characterized in that the detection head (211) of the contact position switch (210) is provided with rolling elements (212).

7. The cleaning device of a photovoltaic array panel according to any one of claims 1 to 4, wherein a second stop block (120) is arranged on the expansion frame (100), the second stop block (120) is arranged on a travelling path of a travelling wheel (220) of the first cleaning assembly (200), and the second stop block (120) is used for blocking the travelling wheel (220) from moving towards a direction away from the first photovoltaic array panel (10); the force providing piece and the force detecting piece are provided with a trigger point, and the second stop block (120) is positioned on one side of the trigger point, which is away from the first photovoltaic array panel (10).

8. The device for cleaning a photovoltaic array panel according to claim 7, further comprising: the second cleaning assembly (300) is arranged on the expansion frame (100), the second cleaning assembly (300) is positioned above the first cleaning assembly (200), and when the first cleaning assembly (200) moves onto the expansion frame (100), the second cleaning assembly (300) is contacted with the upper surface of the first cleaning assembly (200); at least part of the second cleaning assembly (300) may extend to a side of the first cleaning assembly (200) facing the first photovoltaic array panel (10) in a moving direction of the first cleaning assembly (200) when the first cleaning assembly (200) stops moving.

9. The cleaning apparatus of a photovoltaic array panel according to claim 8, wherein the second cleaning assembly (300) comprises:

-a support (310), the support (310) being connected to the expansion bracket (100);

at least one cleaning member (320), wherein the cleaning member (320) is arranged on the supporting member (310), and the extending direction of the cleaning member (320) is not parallel to the moving direction of the first cleaning component (200); the first cleaning component (200) is provided with a second photovoltaic array panel (270), and the length of the cleaning piece (320) is greater than or equal to the arrangement length of the second photovoltaic array panel (270).

10. The cleaning device of a photovoltaic array panel according to claim 9, characterized in that the extension direction of the cleaning member (320) is arranged obliquely with respect to the movement direction of the first cleaning assembly.

11. The device for cleaning a photovoltaic array panel according to claim 9, wherein the cleaning member (320) is movably provided on the supporting member (310), the cleaning assembly (300) further comprising a driving member connected to the cleaning member (320);

the driving piece is used for driving the cleaning piece (320) to move along a third direction so as to clean the second photovoltaic array panel (270), and the third direction is not parallel to the extending direction of the cleaning piece (320);

or the driving piece is used for driving the cleaning piece (320) to rotate around the supporting piece (310), and the rotation plane of the cleaning piece (320) is consistent with the light receiving surface of the second photovoltaic array panel (270).

12. The cleaning apparatus of a photovoltaic array panel according to any one of claims 9 to 11, wherein the cleaning member (320) includes a plurality of the cleaning members (320) arranged at intervals along the moving direction of the first cleaning member (200).