Roller brush assembly and photovoltaic cleaning robot

Abstract

The utility model relates to the technical field of cleaning equipment, and discloses a roller brush assembly and a photovoltaic cleaning robot. The roller brush assembly comprises a long roller shaft, a long sleeve and bristles; the long sleeve is nested on the long roller shaft; the bristles are distributed on the outer peripheral surface of the long sleeve; the rigidity of the long sleeve is larger than that of the long roll shaft. According to the roller brush assembly, the long roller shaft can be supported through the long sleeve, it is ensured that the whole roller brush assembly has enough strength and rigidity, therefore, the deflection generated in the rotating process is reduced, the weight is effectively reduced, and the manufacturing cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular, to a roller brush assembly and a photovoltaic cleaning robot. Background Art

[0002] The roller brush is one of the important parts of a cleaning robot. The roller brush is generally composed of a roller body and bristles arranged on the roller body. The bristles are mainly arranged on the roller body in a planting type and a winding type.

[0003] In the cleaning of photovoltaic panels, in order to increase the size of the cleaning area, the photovoltaic cleaning robot adopts a large-span design, which results in a longer roller brush and the rigidity of the roller brush cannot be effectively guaranteed. As a result, the roller brush is affected by gravity and the unsupported middle area of ​​the roller brush will sag. After the roller brush is elastically deformed, it will produce a lot of disturbance when rotating, which will not only accelerate the wear of the middle bristles, but also affect the service life of the roller brush drive motor and reduce the reliability of the whole machine. Utility Model Content

[0004] The purpose of the present application is to provide a roller brush assembly and a photovoltaic cleaning robot to solve the problem in the prior art that long roller brushes have large disturbances, causing bristle wear and affecting the normal operation of the equipment.

[0005] To achieve the above objectives, in a first aspect, the present application provides a roller brush assembly, comprising:

[0006] Long rollers;

[0007] a long sleeve, nested on the long roller; and

[0008] Bristles are distributed on the outer peripheral surface of the long sleeve;

[0009] Wherein, the rigidity of the long sleeve is greater than the rigidity of the long roller.

[0010] As a further improvement of the above technical solution:

[0011] In a possible implementation manner, the long sleeve and the long roller shaft are in interference fit.

[0012] In a possible implementation manner, a positioning rib is provided on the inner peripheral wall of the long sleeve, and an extending direction of the positioning rib is consistent with an axial direction of the long sleeve;

[0013] Wherein, a positioning groove for accommodating the positioning rib is provided on the outer peripheral surface of the long roller shaft.

[0014] In a possible implementation manner, the long sleeve is provided with a first reinforcing rib structure, and the first reinforcing rib structure is provided on the outer circumference and / or the inner circumference of the long sleeve;

[0015] Wherein, the first reinforcing rib structure is a spiral convex rib extending along the axial direction of the long sleeve.

[0016] In a possible implementation manner, a second reinforcing rib structure is provided in the inner hole of the long sleeve, and the cross-sectional shape of the second reinforcing rib structure along the radial direction of the long sleeve is a star shape or a honeycomb shape;

[0017] Wherein, the long roller shaft is arranged in the inner hole of the long sleeve through a secondary molding process.

[0018] In a possible implementation manner, the long roller shaft is provided with an axial hole penetrating along the axial direction.

[0019] In a possible implementation manner, the long roller shaft is a plastic shaft, and the long sleeve is a metal tube or a carbon fiber tube.

[0020] In a possible implementation, the bristles penetrate the wall thickness of the long sleeve and are implanted on the long roller; or, the bristles are wrapped around the outer circumference of the long sleeve through a positioning strip.

[0021] In a possible implementation manner, the density of the bristles at both ends of the long sleeve is smaller than the density of the bristles in the middle area of ​​the long sleeve;

[0022] Wherein, the bristles located at both ends of the long sleeve are arranged inclined toward the end surface of the long sleeve.

[0023] To achieve the above objectives, in a second aspect, the present application also provides a photovoltaic cleaning robot, comprising a roller brush assembly according to the above first aspect.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present application provides a roller brush assembly and a photovoltaic cleaning robot, wherein the roller brush assembly is formed by nesting a long sleeve on a long roller shaft, and then arranging bristles on the outer circumference of the long sleeve. Since the rigidity of the long sleeve is greater than that of the long roller shaft, the long sleeve can provide support for the long roller shaft, ensuring that the roller brush assembly as a whole has sufficient strength and rigidity, thereby reducing the disturbance generated during the rotation process. Compared with the prior art that uses a metal shaft or a nylon shaft alone as a carrier of the bristles, the weight is effectively reduced and the manufacturing cost is saved. When applied to a photovoltaic cleaning robot, the normal operation of the photovoltaic cleaning robot can be ensured, the reliability is improved, and the service life is extended.

[0026] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application. It should be understood that the following drawings only show certain embodiments of the present application and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In the drawings:

[0028] Figure 1 A schematic diagram of an axial side of a roller brush assembly provided in an embodiment of the present application is shown;

[0029] Figure 2 Shows Figure 1 Partial cross-sectional view along the AA axis;

[0030] Figure 3 A partial three-dimensional structural schematic diagram of a long sleeve in a roller brush assembly provided in an embodiment of the present application is shown;

[0031] Figure 4 Shows Figure 2 A side view of the cooperation between a long sleeve and a long roller shaft in the middle B direction;

[0032] Figure 5 A partial three-dimensional structural schematic diagram of another long sleeve in the roller brush assembly provided in an embodiment of the present application is shown;

[0033] Figure 6 Shows Figure 2 A side view schematic diagram of another type of long sleeve and long roller matching in the middle B direction.

[0034] Description of reference numerals:

[0035] 100, long roller shaft; 110, shaft hole;

[0036] 200, long sleeve; 210, implantation hole; 220, positioning rib; 230, first reinforcing rib structure; 240, second reinforcing rib structure;

[0037] 300. Brush. DETAILED DESCRIPTION

[0038] The specific implementation of the embodiment of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present application, and is not used to limit the embodiment of the present application.

[0039] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0040] In the embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0044] Embodiment 1

[0045] See also Figure 1 , Figure 2 and Figure 3 This embodiment provides a roller brush assembly, which can be applied to a photovoltaic cleaning robot. The roller brush assembly includes a long roller shaft 100, a long sleeve 200 and bristles 300.

[0046] The long sleeve 200 is nested on the long roller 100 . The bristles 300 are distributed on the outer circumference of the long sleeve 200 .

[0047] In this embodiment, the rigidity of the long sleeve 200 is greater than the rigidity of the long roller 100 .

[0048] Optionally, the long sleeve 200 and the long roller shaft 100 are interference fit, so that the long sleeve 200 is prevented from rotating relative to the long roller shaft 100, and the integrity is better.

[0049] It should be noted that the overall length of the roller brush assembly used in the photovoltaic cleaning robot is usually 2m-11m. Although the roller brush assembly can be divided into several sections and then installed on the photovoltaic cleaning robot, in order to improve the cleaning effect and reduce the gap at the transition point, the roller brush assembly still has a certain length. This is inevitably affected by gravity, and the unsupported area in the middle of the roller brush assembly will sag, causing the roller brush assembly to produce elastic deformation. As a result, when the roller brush assembly is driven to rotate, a large disturbance will be generated, which will not only accelerate the wear of the middle bristles 300, but also affect the service life of the roller brush drive motor and reduce the reliability of the whole machine.

[0050] Furthermore, the motor shaft of the roller brush drive motor is connected to the roller brush assembly through a pin shaft to achieve torque transmission. Centrifugal rotation occurs during the transmission process, which causes axial alternating force on the roller brush assembly, making the roller brush assembly susceptible to damage and failure. For this reason, the roller brush assembly needs to increase the necessary rigidity and be as light as possible.

[0051] Among them, the roller brush assembly in the prior art adopts a method of directly winding the bristles 300 on the metal shaft tube or implanting the bristles 300. The attachment of the bristles 300 generally needs to meet a certain thickness, so the metal shaft tube needs to have a certain wall thickness, thereby increasing the weight of the roller brush. Although increasing the wall thickness will increase the rigidity of the metal shaft tube, it also increases the disturbance due to the weight. At the same time, the process technology of implanting the bristles 300 on the metal shaft tube with a thick wall is complicated and difficult, which increases the manufacturing cost.

[0052] The second method used in the prior art for roller brush assemblies is to plant hair on a nylon shaft. Although planting hair is easier, the rigidity of the nylon shaft is inferior to that of the metal shaft tube.

[0053] The third method adopted by the roller brush assembly in the prior art is to insert an aluminum alloy shaft core in the axial direction of the nylon shaft to improve the overall rigidity. At the same time, hair can be planted on the nylon shaft to reduce the difficulty of the process. Although this solution combines the advantages of methods one and two, the pull-off force of the bristles 300 depends entirely on the hair planting depth. Therefore, it is necessary to ensure that the nylon shaft has sufficient hair planting wall thickness. At the same time, in order to obtain better rigidity, the aluminum alloy shaft core also needs a sufficient diameter as support. In order to obtain better hair planting effect and rigidity, the weight of the roller brush assembly itself will also be increased.

[0054] In general, the above-mentioned methods 1, 2 and 3 have failed to solve the above-mentioned technical problems.

[0055] It can be understood that the roller brush assembly provided in this embodiment is achieved by nesting the long sleeve 200 on the long roller shaft, and then arranging the bristles 300 on the outer circumferential surface of the long sleeve 200. Since the rigidity of the long sleeve 200 is greater than that of the long roller shaft 100, the long sleeve 200 can provide support for the long roller shaft 100, ensuring that the roller brush assembly as a whole has sufficient strength and rigidity, thereby reducing the disturbance generated during the rotation process. Compared with the first, second and third methods in the prior art, the roller brush assembly provided in this embodiment uses less material and is smaller in size under the same strength and rigidity, and the radial size of the long roller shaft 100 meets the requirements for implanting the bristles 300. This effectively reduces the weight and saves manufacturing costs. When used in a photovoltaic cleaning robot, it reduces the radial force on the motor shaft, increases the life of the roller brush drive motor and the roller brush assembly, thereby ensuring the normal operation of the photovoltaic cleaning robot, improving reliability and extending service life.

[0056] In this embodiment, the long roller shaft 100 is provided with an axial hole 110 that penetrates in the axial direction. It can be understood that the long roller shaft 100 with a hollow structure reduces the weight and the amount of material used compared to the long roller shaft 100 with a solid structure, which helps to reduce the load of the entire roller brush assembly; on the other hand, under the same outer diameter size, the long roller shaft 100 with a hollow structure generally has higher bending stiffness and torsional stiffness, which helps to improve the stiffness of the entire roller brush assembly; on the other hand, the long roller shaft 100 with a hollow structure can reduce the inertial mass of the shaft, so that the inertial force of the shaft is smaller when the shaft rotates, which helps to reduce vibration and reduce energy consumption.

[0057] Optionally, the long roller shaft 100 is a plastic shaft, such as nylon, POM (Polyoxymethylene), ABS and other plastic materials. It should be understood that the above is only an example and is not intended to limit the scope of protection of this application.

[0058] Optionally, the long sleeve 200 is a metal tube or a carbon fiber tube. It should be understood that the above is only an example and is not intended to limit the scope of protection of the present application.

[0059] In this embodiment, the bristles 300 penetrate the wall thickness of the long sleeve 200 and are implanted on the long roller shaft 100. Specifically, the implantation holes 210 can be pre-opened on the outer circumference of the long sleeve 200 (see Figure 3 ), and then the bristles 300 are implanted into the long roller shaft 100 through the implanting holes 210 through the implanting equipment.

[0060] Optionally, the hair implantation holes 210 are evenly distributed on the outer circumference of the long sleeve 200. Alternatively, the hair implantation holes 210 surround the outer circumference of the long sleeve 200 and form a plurality of evenly distributed hair implantation rings. Alternatively, the hair implantation holes 210 are arranged on the outer circumference of the long sleeve 200 in a spiral along the length direction of the long sleeve 200.

[0061] In some embodiments, the hair implantation holes 210 may or may not be preset. During hair implantation, the bristles 300 are implanted into the long roller shaft 100 through the outer circumference of the long sleeve 200 by a hair implantation device.

[0062] In some embodiments, the bristles 300 are also wound around the outer circumference of the long sleeve 200 through the positioning strips. Specifically, the bristles 300 are first clamped by the positioning strips, and then the positioning strips are wound around the outer circumference of the long sleeve 200.

[0063] In some embodiments, the density of the bristles 300 at both ends of the long sleeve 200 is less than the density of the bristles 300 at the middle area of ​​the long sleeve 200 .

[0064] It should be noted that the density of the bristles 300 described above refers to the density of the bristles 300. Therefore, it can be understood that the density of the bristles 300 at both ends of the long sleeve 200 is lower than the density of the bristles 300 in the middle area of ​​the long sleeve 200, that is, the bristles 300 at both ends of the long sleeve 200 are sparse. In this way, on the one hand, the bristles 300 at both ends of the long sleeve 200 are prevented from being too dense and affecting the installation of the roller brush assembly; on the other hand, the interference between the bristles 300 and the structural parts at both ends of the roller brush assembly (such as the rotating seat and the running wheel) is reduced during the rotation of the long sleeve 200.

[0065] Further, the bristles 300 at both ends of the long sleeve 200 are arranged to be inclined toward the end surface of the long sleeve 200. This ensures that the dead angle area where both ends of the roller brush assembly are connected to the rotating seat can also be cleaned by the bristles 300, thereby improving the cleaning effect.

[0066] This embodiment also provides a photovoltaic cleaning robot, which includes the roller brush assembly provided above.

[0067] Further, both ends of the roller brush assembly are provided with mounting holes for assembly to the photovoltaic cleaning robot. In this way, the motor shaft of the roller brush drive motor in the photovoltaic cleaning robot can be connected to the roller brush assembly through the mounting holes.

[0068] Embodiment 2

[0069] See also Figure 1 , Figure 2 and Figure 4 This embodiment provides a roller brush assembly that can be applied to a photovoltaic cleaning robot. This embodiment is an improvement made on the technical basis of the above embodiment 1. Compared with the above embodiment 1, the difference is that:

[0070] In this embodiment, a positioning rib 220 is provided on the inner circumferential wall of the long sleeve 200, and the extending direction of the positioning rib 220 is consistent with the axial direction of the long sleeve 200. In this embodiment, the positioning rib 220 is in the shape of a long strip. A positioning groove (not shown) for accommodating the positioning rib 220 is provided on the outer circumferential surface of the long roller shaft 100.

[0071] It can be understood that, through the cooperation between the positioning rib 220 and the positioning groove, on the one hand, the rotation of the long sleeve 200 relative to the long roller shaft 100 can be limited, and on the other hand, the rigidity and bending resistance of the long sleeve 200 can be improved, thereby improving the rigidity and bending resistance of the entire roller brush assembly.

[0072] Optionally, a plurality of positioning ribs 220 are provided, and the plurality of positioning ribs 220 are evenly distributed around the axis of the long sleeve 200 to ensure the stability of the roller brush assembly during rotation.

[0073] Embodiment 3

[0074] See also Figure 1 , Figure 2 and Figure 5 This embodiment provides a roller brush assembly that can be applied to a photovoltaic cleaning robot. This embodiment is an improvement made on the technical basis of the above embodiment 1. Compared with the above embodiment 1, the difference is that:

[0075] In this embodiment, a first reinforcing rib structure 230 is provided on the long sleeve 200, wherein the first reinforcing rib structure 230 is a spiral convex rib extending along the axial direction of the long sleeve 200. The first reinforcing rib structure 230 is used to improve the rigidity and bending resistance of the long sleeve 200, thereby improving the rigidity and bending resistance of the entire roller brush assembly.

[0076] Optionally, the first reinforcing rib structure 230 is disposed on the outer circumference or inner circumference of the long sleeve 200. Of course, the first reinforcing rib structure 230 can also be disposed on the outer circumference and the inner circumference of the long sleeve 200.

[0077] Embodiment 4

[0078] See also Figure 1 , Figure 2 and Figure 6 This embodiment provides a roller brush assembly that can be applied to a photovoltaic cleaning robot. This embodiment is an improvement made on the technical basis of the above embodiment 1. Compared with the above embodiment 1, the difference is that:

[0079] In the present embodiments, a second reinforcing rib structure 240 is provided in the inner hole of the long sleeve 200, and the cross-sectional shape of the second reinforcing rib structure 240 along the radial direction of the long sleeve 200 is a star shape or a honeycomb shape. The second reinforcing rib structure 240 is used to improve the rigidity and bending resistance of the long sleeve 200, thereby improving the rigidity and bending resistance of the entire roller brush assembly.

[0080] It is understandable that when the second reinforcing rib structure 240 is provided in the inner hole of the long sleeve 200, the long roller shaft 100 is provided in the inner hole of the long sleeve 200 through a secondary molding process, such as a secondary injection molding process.

[0081] The above describes in detail the optional implementation methods of the embodiments of the present application in combination with the accompanying drawings. However, the embodiments of the present application are not limited to the specific details in the above implementation methods. Within the technical concept of the embodiments of the present application, various simple modifications can be made to the technical scheme of the embodiments of the present application, and these simple modifications all belong to the protection scope of the embodiments of the present application.

[0082] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present application will not further describe various possible combinations.

[0083] In addition, the various implementation methods of the embodiments of the present application may be arbitrarily combined, and as long as they do not violate the ideas of the embodiments of the present application, they should also be regarded as the contents disclosed in the embodiments of the present application.

Claims

1. A roller brush assembly, characterized in that: include: Long roller (100); A long sleeve (200) nested on the long roller (100); and Brush bristles (300) are distributed on the outer peripheral surface of the long sleeve (200); Wherein, the rigidity of the long sleeve (200) is greater than the rigidity of the long roller (100).

2. The roller brush assembly according to claim 1, characterized in that: The long sleeve (200) and the long roller shaft (100) are in interference fit.

3. The roller brush assembly according to claim 1, characterized in that: A positioning rib (220) is provided on the inner peripheral wall of the long sleeve (200), and the extending direction of the positioning rib (220) is consistent with the axial direction of the long sleeve (200); Wherein, a positioning groove for accommodating the positioning rib (220) is provided on the outer peripheral surface of the long roller shaft (100).

4. The roller brush assembly according to claim 1, characterized in that: The long sleeve (200) is provided with a first reinforcing rib structure (230), and the first reinforcing rib structure (230) is provided on the outer circumference and / or the inner circumference of the long sleeve (200); Wherein, the first reinforcing rib structure (230) is a spiral convex rib extending along the axial direction of the long sleeve (200).

5. The roller brush assembly according to claim 1, characterized in that: A second reinforcing rib structure (240) is provided in the inner hole of the long sleeve (200), and the cross-sectional shape of the second reinforcing rib structure (240) along the radial direction of the long sleeve (200) is a star shape or a honeycomb shape; Wherein, the long roller shaft (100) is arranged in the inner hole of the long sleeve (200) through a secondary molding process.

6. The roller brush assembly according to claim 1, characterized in that: The long roller shaft (100) is provided with an axial hole (110) penetrating along the axial direction.

7. The roller brush assembly according to claim 1, characterized in that: The long roller shaft (100) is a plastic shaft, and the long sleeve (200) is a metal tube or a carbon fiber tube.

8. The roller brush assembly according to claim 1, characterized in that: The bristles (300) penetrate the wall thickness of the long sleeve (200) and are implanted on the long roller (100); or, the bristles (300) are wrapped around the outer circumference of the long sleeve (200) via a positioning strip.

9. The roller brush assembly according to any one of claims 1 to 8, characterized in that: The density of the bristles (300) located at both ends of the long sleeve (200) is smaller than the density of the bristles (300) located in the middle area of ​​the long sleeve (200); Wherein, the bristles (300) located at both ends of the long sleeve (200) are arranged to be inclined toward the end surface of the long sleeve (200).

10. A photovoltaic cleaning robot, characterized in that: The invention comprises a roller brush assembly according to any one of claims 1 to 9.

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