Cleaning device

Abstract

The utility model discloses a cleaning device which comprises a main frame, the main frame is provided with a conveying inclined face, the main frame is provided with a wheel body, and the wheel body forms a supporting face used for making contact with the ground to be cleaned; the guide piece is arranged at the lower end of the conveying inclined plane; the cleaning assembly comprises a cleaning belt, the cleaning belt can abut against the conveying inclined face under the gravity effect of the cleaning assembly and move relative to the guiding piece and the conveying inclined face, and in the working state, the cleaning belt can abut against the ground to be cleaned. Therefore, garbage on the to-be-cleaned ground is driven by the cleaning belt and guided by the guide piece to enter the space between the cleaning belt and the conveying slope, and is conveyed from the lower end of the conveying slope to the upper end of the conveying slope.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and particularly relates to a cleaning device. Background Art

[0002] In related technologies, a cleaning device for cleaning the ground generally uses a negative pressure fan to suck the garbage on the ground to be cleaned, and a relatively large working noise will be generated when cleaning the garbage. Summary of the Utility Model

[0003] On the one hand, the present application provides a cleaning device, including: a main frame provided with a conveying inclined plane, a wheel body is arranged on the main frame, and the wheel body forms a supporting surface for contacting the ground to be cleaned; a guiding member arranged at the lower end of the conveying inclined plane; a cleaning assembly including a cleaning belt, the cleaning belt can be abutted against the conveying inclined plane under the gravity of the cleaning assembly, and moves relative to the guiding member and the conveying inclined plane. In the working state, the cleaning belt can be pressed against the ground to be cleaned, so that the garbage on the ground to be cleaned enters between the cleaning belt and the conveying inclined plane under the driving of the cleaning belt and the guiding of the guiding member, and is conveyed from the lower end to the upper end of the conveying inclined plane; wherein, the cleaning device has a reference section, the reference section is perpendicular to the supporting surface and parallel to the traveling direction of the cleaning device, a guiding surface is arranged on the side of the guiding member facing the cleaning belt. When the cleaning belt contacts the guiding surface in a non-deformed manner, there is a gap between the cleaning belt and the lower end of the guiding surface in the reference section. When the cleaning belt is pressed against the ground to be cleaned, the cleaning belt deforms under the gravity of the cleaning assembly, so that the gap between the cleaning belt and the lower end of the guiding surface decreases.

[0004] In some embodiments, when the cleaning belt is pressed against the ground to be cleaned, the lower end of the guiding surface abuts against the ground to be cleaned, and in the reference section, the gap between the cleaning belt and the lower end of the guiding surface is less than or equal to 0.6 mm.

[0005] In some embodiments, when the cleaning belt is pressed against the ground to be cleaned, the lower end of the guiding surface abuts against the ground to be cleaned, and the cleaning belt abuts against the lower end of the guiding surface.

[0006] In some embodiments, the cleaning belt includes a base layer and a fluff layer arranged on the outer peripheral surface of the base layer. When the cleaning belt is pressed against the ground to be cleaned, the ratio of the interference amount of the lower end of the guiding surface on the fluff layer to the fluff length of the fluff layer is between 0.1 and 0.5.

[0007] In some embodiments, the guiding surface includes an abutting section and a supporting section connected to the upper end of the abutting section. The lower end of the guiding surface is the lower end of the abutting section. When the cleaning belt is pressed against the ground to be cleaned, the ratio of the interference amount of the supporting section on the fluff layer to the interference amount of the lower end of the abutting section on the fluff layer is between 1.5 and 2.5.

[0008] In some embodiments, the length of the villi in the villus layer ranges from 6 to 8 mm, the interference amount of the lower end of the abutting section on the villus layer ranges from 0.5 to 3 mm, and the grammage of the villus layer is 550 - 700 g / m².

[0009] In some embodiments, the cleaning assembly further includes a first roller, a second roller, and a connecting rod assembly. The connecting rod assembly includes a first end and a second end arranged opposite to each other. The first roller is rotatably supported at the first end of the connecting rod assembly, and the first roller can rotate around a first axis. The second roller is supported at the second end of the connecting rod assembly and can rotate around a second axis parallel to the first axis. The connecting rod assembly is rotatably supported on the main frame. The cleaning belt is annularly arranged around the outer peripheries of the first roller and the second roller. The second roller is used to press the cleaning belt against the ground to be cleaned, and the traveling direction is perpendicular to the first axis and the second axis. In a reference cross-section, the cleaning device has a first reference line that passes through the second axis and is perpendicular to the traveling direction. The lower end of the guiding surface is located on the side of the first reference line close to the main frame. In the reference cross-section, the ratio between the distance between the lower end of the guiding surface and the first reference line and the radius of the second roller ranges from 0.3 to 0.7.

[0010] In some embodiments, in the reference cross-section, the cleaning device further has a second reference line that passes through the second axis and the lower end of the guiding surface. The included angle between the first reference line and the second reference line ranges from 20° to 30°.

[0011] In some embodiments, the guiding surface includes an abutting section and a supporting section connected to the upper end of the abutting section. The lower end of the guiding surface is the lower end of the abutting section. When the cleaning belt is pressed against the ground to be cleaned, the cleaning belt deforms under the gravity of the cleaning assembly and presses against both the abutting section and the supporting section simultaneously. In the reference cross-section, the connecting line between the upper and lower ends of the abutting section and the supporting surface has a first included angle, and the connecting line between the upper and lower ends of the supporting section and the supporting surface has a second included angle. The first included angle ranges from 40° to 50°, and the second included angle ranges from 30° to 45°. The cleaning device further includes a driving mechanism and a counterweight block arranged in the second roller. The total weight of the second roller, the driving mechanism, and the counterweight block ranges from 850 to 1400 g.

[0012] In some embodiments, the cleaning belt includes a base layer and a villus layer arranged on the outer peripheral surface of the base layer. When the cleaning belt contacts the guiding surface in a non-deformed manner, the supporting surface intersects with the villus layer, and the base layer is located above the supporting surface. In the reference cross-section, the ratio between the minimum distance from the supporting surface to the outer peripheral surface of the base layer and the maximum distance from the supporting surface to the outer peripheral surface of the villus layer ranges from 1.1 to 1.6.

[0013] In some embodiments, when the cleaning belt presses against the ground to be cleaned, the lifting height of the second roller relative to the support surface is less than or equal to 1.5 mm; or in the reference cross-section, the abutting section is arranged in an arc shape protruding toward the side where the cleaning belt is located, and the maximum protruding height of the abutting section relative to the connection line between the upper and lower ends of the abutting section is less than or equal to 0.25 mm.

[0014] By setting that the cleaning belt abuts against the conveying inclined plane under the gravity of the cleaning assembly and can move relative to the guiding member and the conveying inclined plane, in the working state, the cleaning belt can press against the ground to be cleaned, so that the garbage on the ground to be cleaned enters between the cleaning belt and the conveying inclined plane under the driving of the cleaning belt and the guiding of the guiding member, and is conveyed from the lower end to the upper end of the conveying inclined plane. Thus, there is no need to set a negative pressure fan to suck the garbage on the ground to be cleaned, which is beneficial to reducing the noise generated by the cleaning device in the working state.

[0015] On the other hand, when the cleaning belt contacts the guiding surface in a non-deformed manner, there is a gap between the lower end of the cleaning belt and the guiding surface, which is beneficial to reducing the interference amount of the guiding member on the cleaning belt. When the cleaning belt presses against the ground to be cleaned, if the interference amount of the guiding member on the cleaning belt is too large, the total pressure generated by the cleaning assembly under the gravity will be excessively shared on the guiding member, resulting in insufficient pressure of the cleaning assembly on the ground to be cleaned, which is not conducive to improving the cleaning effect. Therefore, in this application, by setting that there is a gap between the lower end of the cleaning belt and the guiding surface when the cleaning belt contacts the guiding surface in a non-deformed manner, it is beneficial to ensure that the cleaning assembly has sufficient pressure on the ground, thereby improving the cleaning effect.

[0016] In addition, when the cleaning device is in the working state and the cleaning belt is pressed against the ground to be cleaned, the cleaning belt deforms under the gravity of the cleaning assembly, so that the gap between the lower end of the cleaning belt and the guiding surface is reduced. In this way, the cleaning belt and the guiding member can cooperate well, improving the garbage introduction efficiency in the working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0018] Figure 1 is a schematic structural diagram of an embodiment of the cleaning device of the present application;

[0019] Figure 2 is Figure 1 a schematic cross-sectional structural diagram of a part of

[0020] Figure 3 is Figure 2 An enlarged schematic view of the local B in

[0021] Figure 4 is Figure 1 A schematic structural view of a partial structure (main frame and guide member) in

[0022] Figure 5 is Figure 4 A schematic structural view of the partial structure shown in at another angle;

[0023] Figure 6 is Figure 1 A schematic structural view of the guide member in

[0024] Figure 7 is Figure 1 A schematic cross-sectional view of the cleaning belt in

[0025] Figure 8 is Figure 6 A schematic cross-sectional view of the guide member in Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. In addition, it should be noted that for the convenience of description, only parts related to the present application rather than all structures are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0027] The present application provides a cleaning device 100. As Figures 1 to 3 shown, Figure 1 is a schematic structural view of an embodiment of the cleaning device 100 of the present application, Figure 2 is Figure 1 A schematic cross-sectional view of a partial structure in along A-A, Figure 3 is Figure 2 An enlarged schematic view of the local B in

[0028] In some embodiments, the cleaning device 100 includes a main frame 10, a guide member 20, and a cleaning assembly 30. Among them, the main frame 10 is provided with a transfer inclined surface 11, and a wheel body 12 is provided on the main frame 10. The wheel body 12 forms a support surface C for contacting the ground to be cleaned. The guide member 20 is disposed at the lower end of the transfer inclined surface 11. The cleaning assembly 30 includes a cleaning belt 31. The cleaning belt 31 can abut against the transfer inclined surface 11 under the gravity of the cleaning assembly 30 and move relative to the guide member 20 and the transfer inclined surface 11. In the working state, the cleaning belt 31 can press against the ground to be cleaned, so that the garbage on the ground to be cleaned enters between the cleaning belt 31 and the transfer inclined surface 11 under the driving of the cleaning belt 31 and the guiding action of the guide member 20 and is conveyed from the lower end to the upper end of the transfer inclined surface 11. Among them, as Figure 1 shown, the cleaning device 100 has a reference section A-A. The reference section A-A is perpendicular to the support surface C and parallel to the traveling direction of the cleaning device 100. A guiding surface 21 is provided on one side of the guide member 20 facing the cleaning belt 31. When the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner, in the reference section A-A, there is a gap L0 between the cleaning belt 31 and the lower end D of the guiding surface 21. When the cleaning belt 31 presses against the ground to be cleaned, the cleaning belt 31 deforms under the gravity of the cleaning assembly 30, so that the gap L0 between the cleaning belt 31 and the lower end D of the guiding surface 21 decreases.

[0029] As Figure 2 and Figure 3 shown, the description of "the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner" in this application means that the cleaning belt 31 just contacts the guiding surface 21, but the guiding surface 21 does not interfere with the cleaning belt 31. Figure 2 and Figure 3 The diagrams shown are all schematic diagrams when "the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner". It is easy to understand that the description of "the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner" in this application can be an ideal state that needs to be maintained when an external force acts on the cleaning assembly 30.

[0030] It should be noted that the "gap L0 between the cleaning belt 31 and the lower end D of the guiding surface 21" described in this application refers to the minimum straight-line distance between the cleaning belt 31 and the lower end D of the guiding surface 21 in the reference section A-A.

[0031] By setting the cleaning belt 31 to abut against the conveying inclined plane 11 under the gravity of the cleaning assembly 30 and being able to move relative to the guiding member 20 and the conveying inclined plane 11, in the working state, the cleaning belt 31 can be pressed against the ground to be cleaned, so that the garbage on the ground to be cleaned enters between the cleaning belt 31 and the conveying inclined plane 11 under the driving of the cleaning belt 31 and the guiding of the guiding member 20, and is conveyed from the lower end to the upper end of the conveying inclined plane 11. Thus, there is no need to set a negative pressure fan to suck the garbage on the ground to be cleaned, which is beneficial to reducing the noise generated by the cleaning device 100 in the working state.

[0032] On the other hand, when the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner, there is a gap L0 between the cleaning belt 31 and the lower end D of the guiding surface 21, which is beneficial to reducing the interference amount of the guiding member 20 on the cleaning belt 31. When the cleaning belt 31 is pressed against the ground to be cleaned, if the interference amount of the guiding member 20 on the cleaning belt 31 is too large, the total pressure generated by the cleaning assembly 30 under the action of gravity will be excessively distributed on the guiding member 20, resulting in insufficient pressure of the cleaning assembly 30 on the ground to be cleaned, which is not conducive to improving the cleaning effect. Therefore, in this application, by setting that when the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner, there is a gap between the cleaning belt 31 and the lower end of the guiding surface 21, it is beneficial to ensure that the cleaning assembly 30 has sufficient ground pressure, thereby improving the cleaning effect.

[0033] On the other hand, when the cleaning device 100 is in the working state and the cleaning belt 31 is pressed against the ground to be cleaned, the cleaning belt 31 deforms under the gravity of the cleaning assembly 30, so that the gap L0 between the cleaning belt 31 and the lower end D of the guiding surface 21 decreases. In this way, the cleaning belt 31 and the guiding member 20 can be better coordinated, improving the garbage introduction efficiency in the working state.

[0034] As Figure 4 and Figure 5 shown, Figure 4 is Figure 1 a schematic structural diagram of a part of the structure (the main frame 10 and the guiding member 20) in Figure 5 is Figure 4 a schematic structural diagram of the part of the structure shown along another angle. Wheel bodies 12 are arranged below the main frame 10, and the number of the wheel bodies 12 can be four. The four wheel bodies 12 form a supporting surface C for supporting the cleaning device 100 on the ground to be cleaned. In some embodiments, the number of the wheel bodies 12 can also be three, which is not limited in this application, and those skilled in the art can select according to actual needs.

[0035] As Figure 3As shown, the conveying inclined plane 11 is inclined with respect to the supporting surface C, and the included angle between the connecting line of the upper and lower ends of the conveying inclined plane 11 and the supporting surface C can be between 35° and 50°. For example, the included angle between the connecting line of the upper and lower ends of the conveying inclined plane 11 and the supporting surface C can be 35°, 38°, 40°, 42°, 45°, 48°, 50°. It should be noted that the included angle between a straight line and a plane, between planes, or between straight lines described in this application refers to the corresponding acute angle.

[0036] The guiding member 20 is arranged at the lower end of the conveying inclined plane 11. The guiding member 20 can specifically be made of a flexible material, such as silica gel. Of course, this application does not limit this, and those skilled in the art can select according to actual needs. When the cleaning belt 31 presses against the ground to be cleaned, the flexible guiding member 20 can better contact the ground to be cleaned, which is beneficial to improving the garbage introduction efficiency.

[0037] In some embodiments, when the cleaning device 100 is supported on the ground to be cleaned, the cleaning device 100 can move forward and backward. That is to say, the cleaning device 100 can be pushed and pulled on the ground to be cleaned during use, so as to achieve a better cleaning effect on the ground to be cleaned. It should be noted that the front side and the rear side described in this application are defined by the inclination angle of the conveying inclined plane 11 with respect to the ground to be cleaned. The front side refers to the side where the obtuse angle formed by the conveying inclined plane 11 with respect to the ground to be cleaned is located, and the rear side refers to the side where the acute angle formed by the conveying inclined plane 11 with respect to the ground to be cleaned is located.

[0038] In some embodiments, as Figure 2 shown, the lower surface 13 of the main frame 10 can maintain a certain distance from the supporting surface C. When the cleaning device 100 is supported on the ground to be cleaned via the wheel body 12, the supporting surface C and the ground to be cleaned refer to the same plane. At this time, the lower surface 13 of the main frame 10 can maintain a certain distance from the ground to be cleaned, which can reduce the possibility of strong contact between the guiding member 20 made of flexible material and the ground to be cleaned. For example, when the cleaning device 100 is placed on the ground to be cleaned, if the lower surface 13 of the main frame 10 directly contacts the ground to be cleaned, when the cleaning device 100 moves forward, once it encounters a large piece of garbage, the front end of the cleaning device 100 (such as Figure 2 the left side shown in

[0039] In the solution of the present application, the cleaning device 100 is supported on the ground to be cleaned via the wheel body 12, so that a certain distance is maintained between the lower surface 13 of the main frame 10 and the ground to be cleaned. When the cleaning device 100 moves forward, even if it encounters relatively large garbage, the pressure between the guiding member 20 made of flexible material and the ground to be cleaned is controllable, enabling the cleaning device 100 to move forward smoothly.

[0040] As Figure 3 and Figure 6 shown, Figure 6 is Figure 1 a schematic structural view of the guiding member 20 in []. The guiding member 20 is provided with a guiding surface 21 on the side facing the cleaning belt 31. The guiding surface 21 may include an abutting section 211, a first transition section 213, an adapting section 214, and a second transition section 215. The first transition section 213 may be connected between the abutting section 211 and the adapting section 214 to enable a smooth transition between the abutting section 211 and the adapting section 214. The second transition section 215 may be connected between the adapting section 214 and the conveying inclined surface 11 to enable a smooth transition between the adapting section 214 and the conveying inclined surface 11. In some embodiments, the first transition section 213, the adapting section 214, and the second transition section 215 may be collectively referred to as a supporting section 212, and the supporting section 212 is connected to the upper end of the abutting section 211. It is easy to understand that the lower end D of the guiding surface 21 is the lower end D of the abutting section 211.

[0041] Among them, the adapting section 214 and the second transition section 215 are used to adapt to the inclination angle of the conveying inclined surface 11 (i.e., the included angle between the conveying inclined surface 11 and the supporting surface C). For example, on the reference plane C-C, the inclination angle of the line connecting the upper and lower ends of the second transition section 215 may be substantially the same as the inclination angle of the conveying inclined surface 11. It should be noted that the "substantially the same" described in the present application allows an error of plus or minus 5%.

[0042] As Figure 2 shown, in some embodiments, the cleaning assembly 30 may include a cleaning belt 31, a first roller 32, a second roller 33, and a connecting rod assembly 34. The connecting rod assembly 34 may include a relatively arranged first end and second end. The first roller 32 is rotatably supported at the first end of the connecting rod assembly 34 and can rotate about the first axis 321. The second roller 33 is supported at the second end of the connecting rod assembly 34 and can rotate about a second axis 331 parallel to the first axis 321. The connecting rod assembly 34 is rotatably supported on the main frame, and the connecting rod assembly 34 can swing about the third axis so that the second roller 33 swings relative to the first roller 32. In Figures 1 - 3In the illustrated embodiment, the third axis may coincide with the first axis 321. In some embodiments, the third axis may also be parallel to the first axis 321 or form a certain angle with the first axis 321. This application does not limit this, and those skilled in the art can make a choice according to actual needs.

[0043] The cleaning belt 31 is annularly arranged around the outer peripheries of the first roller 32 and the second roller 33. That is to say, the cleaning assembly 30 as a whole has a single cantilever structure and can swing around the third axis. The second roller 33 is used to press the cleaning belt 31 against the ground to be cleaned, and the traveling direction of the cleaning device 100 is perpendicular to the first axis 321 and the second axis 331.

[0044] As Figure 2 shown, the cleaning assembly 30 may further include a driving mechanism 35 and a counterweight (not shown in the drawings) arranged in the second roller 33. When the cleaning assembly 30 is arranged on the left side of the cleaning device 100, the driving mechanism 35 can drive the second roller 33 to rotate counterclockwise around the second axis 331 to pick up the garbage on the ground to be cleaned. It is easy to understand that in some embodiments, the cleaning assembly 30 may also be arranged on the right side of the cleaning device 100. At this time, the driving mechanism 35 can drive the second roller 33 to rotate clockwise around the second axis 331 to pick up the garbage on the ground to be cleaned.

[0045] As Figure 2 shown, when the cleaning assembly 30 is arranged on the left side of the cleaning device 100, the cleaning belt 31 can be abutted against the conveying inclined plane 11 under the gravity of the cleaning assembly 30 and can rotate counterclockwise under the driving action of the driving mechanism 35, so as to move relative to the guiding member 20 and the conveying inclined plane 11. When the cleaning device 100 enters the working state, the cleaning belt 31 can be pressed against the ground to be cleaned, so that the garbage on the ground to be cleaned enters between the cleaning belt 31 and the conveying inclined plane 11 under the driving of the cleaning belt 31 and the guiding of the guiding member 20, and is conveyed from the lower end to the upper end of the conveying inclined plane 11.

[0046] In Figure 2 the illustrated embodiment, the driving mechanism 35 can further drive the second roller 33 to rotate clockwise around the second axis 331. When the second roller 33 rotates clockwise, the pressure on the ground to be cleaned is greater than the pressure when it rotates counterclockwise. For example, when there are stains with greater adhesion on the ground to be cleaned, the driving mechanism 35 can be controlled to drive the second roller 33 to rotate clockwise to achieve a better cleaning effect.

[0047] As Figure 1As shown, the cleaning device 100 has a reference cross-section A-A, which is perpendicular to the support surface C and parallel to the traveling direction of the cleaning device 100. In some embodiments, please continue to refer to Figure 3 , when the cleaning belt 31 presses against the ground to be cleaned, the lower end D of the abutting section 211 abuts against the ground to be cleaned, on the reference cross-section A-A, and the gap L0 between the cleaning belt 31 and the lower end D of the abutting section 211 is less than or equal to 0.6 mm.

[0048] The cleaning belt 31 described in this application may be in three states: First, the factory state. At this time, the cleaning device 100 is in the factory state, and the cleaning belt 31 is not wetted by liquid. At this time, the fluff layer 312 is relatively fluffy, and when it is pressed against the ground to be cleaned, it will have a large deformation; Second, the running state. The running state means that the cleaning belt 31 has moved in a fixed direction for at least 5 hours, and the cleaning belt 31 is not wetted by liquid. At this time, the fluff layer 312 will be relatively compacted. When the fluff layer 312 is pressed against the ground to be cleaned, the degree of deformation will be relatively reduced; Third, the wetting state. The wetting state means that the cleaning belt 31 has moved in a fixed direction for at least 5 hours, and the cleaning belt 31 is wetted by liquid. At this time, when the fluff layer 312 is pressed against the ground to be cleaned, the degree of deformation will be further reduced.

[0049] Optionally, the cleaning device 100 further includes a scraper that abuts against the cleaning belt 31. The scraper is used to scrape the dirty liquid / garbage, etc. on the cleaning belt 31. Therefore, it interferes more with the cleaning belt 31, and when the cleaning belt 31 runs in a fixed rotation direction, it will compact the fluff layer 312 of the cleaning belt 31.

[0050] Thus, when the cleaning belt 31 is in different states, when the cleaning belt 31 presses against the ground to be cleaned, the gap L0 between the cleaning belt 31 and the lower end D of the abutting section 211 will change. It should be noted that in the solution of this embodiment, no matter what state the cleaning belt 31 is in, when the cleaning belt 31 presses against the ground to be cleaned, the gap L0 between the cleaning belt 31 and the lower end D of the abutting section 211 is always less than or equal to 0.6 mm.

[0051] Among them, the lower end D of the abutting section 211 may refer to the frontmost end of the abutting section 211 when the cleaning device 100 travels forward. When the cleaning belt 31 does not form a pressing force with the abutting section 211, the distance between the lower end D of the abutting section 211 and the support surface C may be less than or equal to 0.4 mm. For example, in some embodiments, the lower end D of the abutting section 211 may be exactly located on the support surface C. For another example, in some embodiments, the lower end D of the abutting section 211 may also be located above the support surface C, and the distance between the lower end D of the abutting section 211 and the support surface C may be less than or equal to 0.4 mm.

[0052] In the solution of the present application, when the cleaning device 100 cleans the ground to be cleaned, when the cleaning belt 31 presses against the ground to be cleaned, the lower end D of the abutting section 211 abuts against the ground to be cleaned, and the gap L0 between the cleaning belt 31 and the lower end D of the abutting section 211 is less than or equal to 0.6 mm. When the cleaning device 100 is in the working state, the cleaning belt 31 and the guiding member 20 cooperate better, and the garbage on the ground to be cleaned is introduced between the cleaning belt 31 and the conveying inclined plane 11, further improving the garbage introduction efficiency.

[0053] In some embodiments, regardless of the state of the cleaning belt 31, when the cleaning belt 31 presses against the ground to be cleaned, the gap L0 between the cleaning belt 31 and the lower end D of the abutting section 211 can always be less than or equal to 0.5 mm, always less than 0.4 mm, always less than 0.3 mm, always less than 0.2 mm, or always less than 0.1 mm. The present application does not limit this, and those skilled in the art can select according to actual needs.

[0054] In some embodiments, regardless of the state of the cleaning belt 31, when the cleaning belt 31 presses against the ground to be cleaned, the cleaning belt 31 deforms and spreads out to both sides under the gravity of the cleaning assembly 30, so that the cleaning belt 31 always abuts against the lower end D of the guiding surface 21. In this way, the cleaning belt 31, the guiding surface 21 and the ground to be cleaned form a continuous cleaning channel, which can prevent relatively small garbage from remaining in the gap between the cleaning belt 31 and the lower end D of the guiding surface 21, enabling the cleaning belt 31 and the guiding member 20 to cooperate better, further improving the garbage introduction efficiency, and realizing the continuous transfer of garbage.

[0055] Optionally, the second roller 33 is of a cylindrical structure. Since the lower end D of the guiding surface 21 is the closest to the lowest point of the second roller 33, when the cleaning device 100 is in the working state, that is, when the cleaning belt 31 is pressed against the ground to be cleaned by the second roller 33, if there is a hard interference between the cleaning belt 31 and the second roller 33 and the lower end D of the guiding surface 21, more pressure of the cleaning assembly 30 may be shared, and thus the pressure on the ground to be cleaned is reduced. Therefore, by setting a gap and then filling the gap by the deformation and spreading of the cleaning belt 31 to both sides, the sharing of the pressure of the guiding surface 21 on the cleaning assembly 30 can be reduced.

[0056] It should be noted that the gap L0 between the cleaning belt 31 and the lower end D of the abutting section 211 specifically refers to the gap between the outer surface (the coplanar surface formed by most of the villi) of the villi layer 312 in the cleaning belt 31 and the lower end D of the abutting section 211.

[0057] Optionally, when the cleaning belt 31 is pressed against the guiding surface 21, it deforms and spreads to both sides. When the cleaning belt 31 is pressed against the ground to be cleaned, under the action of the gravity of the cleaning assembly 30, the cleaning belt 31 deforms and spreads to both sides, so that the cleaning belt 31 is always in contact with the lower end D of the guiding surface 21.

[0058] As Figure 7 shown, Figure 7 is Figure 1 a schematic cross-sectional structure diagram of the cleaning belt 31 in [reference]. In some embodiments, the cleaning belt 31 includes a base layer 311 and a fluff layer 312 provided on the outer peripheral surface of the base layer 311.

[0059] In some embodiments, when the cleaning belt 31 is pressed against the ground to be cleaned, the ratio of the interference amount of the lower end D of the contact section 211 on the fluff layer 312 to the fluff length of the fluff layer 312 is between 0.1 and 0.5. Wherein, if the fluff length of the fluff layer 312 is L1, and the minimum distance between the outer peripheral surface of the base layer 311 and the lower end D of the contact section 211 on the reference cross-section A-A is denoted as L2, then the "interference amount of the lower end D of the contact section 211 on the fluff layer 312" described in this application refers to the value obtained by subtracting L2 from L1. In addition, the "fluff length of the fluff layer 312" described in this application refers to the length of the fluff when it is not worn and in a naturally extended state.

[0060] It should be noted that in the description of this application, the interference amount of any component mentioned on the fluff layer 312 refers to the difference obtained by subtracting the distance between the component and the outer peripheral surface of the base layer 311 from the fluff length L1 of the fluff layer 312. In addition, if the distance between the component and the outer peripheral surface of the base layer 311 is variable, the minimum distance between the component and the outer peripheral surface of the base layer 311 can be used to calculate the interference amount.

[0061] In the solution of this application, when the cleaning belt 31 is pressed against the ground to be cleaned, the ratio of the interference amount of the lower end D of the contact section 211 on the fluff layer 312 to the fluff length of the fluff layer 312 is between 0.1 and 0.5, so that when the cleaning device 100 is in a working state, the cleaning belt 31 and the lower end D of the contact section 211 can maintain slight interference, so that the cleaning belt 31 and the guiding member 20 can cooperate better, and the garbage on the ground to be cleaned can be smoothly introduced between the cleaning belt 31 and the conveying inclined surface 11, further improving the garbage introduction efficiency.

[0062] It should be noted that regardless of the state of the cleaning belt 31, the length of the villi remains unchanged when it is not worn. However, in different states of the cleaning belt 31, when the cleaning belt 31 presses against the ground to be cleaned, the interference amount of the lower end D of the abutting section 211 on the villus layer 312 will change to a certain extent. Therefore, when the cleaning belt 31 presses against the ground to be cleaned, the ratio of the interference amount of the lower end D of the abutting section 211 on the villus layer 312 to the villus length of the villus layer 312 will also change to a certain extent. However, in the solution of this embodiment, regardless of the state of the cleaning belt 31, when the cleaning belt 31 presses against the ground to be cleaned, this ratio can always be between 0.1 and 0.5. Further, this ratio can always be between 0.1 and 0.2, always between 0.2 and 0.3, always between 0.3 and 0.4, or always between 0.4 and 0.5.

[0063] In some embodiments, when the cleaning belt 31 presses against the ground to be cleaned, the ratio of the interference amount of the supporting section 212 on the villus layer 312 to the interference amount of the lower end D of the abutting section 211 on the villus layer 312 is between 1.5 and 2.5. As mentioned above, the supporting section 212 may include a first transition section 213, an adaptation section 214, and a second transition section 215. The interference amounts of the first transition section 213, the adaptation section 214, and the second transition section 215 on the villus layer 312 may not be the same. Therefore, in the description of this application, the interference amount of the supporting section 212 on the villus layer 312 refers to the maximum interference amount of the supporting section 212 on the villus layer 312. That is to say, if the villus length is denoted as L1 and the minimum distance between the outer peripheral surface of the base layer 311 and the supporting section 212 on the reference cross-section A-A is denoted as L3, the interference amount of the supporting section 212 on the villus layer 312 refers to the value obtained by subtracting L3 from L1.

[0064] In the solution of this application, when the cleaning belt 31 presses against the ground to be cleaned, the ratio of the interference amount of the supporting section 212 on the villus layer 312 to the interference amount of the lower end D of the abutting section 211 on the villus layer 312 is between 1.5 and 2.5, which can reasonably distribute the pressure of the cleaning assembly 30 on the guiding member 20 between the abutting section 211 and the supporting section 212, so as to better convey garbage and further improve the garbage picking efficiency.

[0065] As described above, when the cleaning belt 31 is in different states, the interference amount of the supporting section 212 on the fluff layer 312 will change, and the interference amount of the lower end D of the abutting section 211 on the fluff layer 312 will also change. However, in the solution of this embodiment, regardless of the state of the cleaning belt 31, when the cleaning belt 31 is pressed against the ground to be cleaned, the ratio of the interference amount of the supporting section 212 on the fluff layer 312 to the interference amount of the lower end D of the abutting section 211 on the fluff layer 312 can always be between 1.5 and 2.5. Further, this ratio can always be between 1.5 and 1.8, always between 1.8 and 2, always between 2 and 2.3, or always between 2.3 and 2.5.

[0066] In some embodiments, the grammage of the fluff layer 312 is 550 - 700 g / m². For example, the grammage of the fluff layer 312 can be 550 g / m², 600 g / m², 650 g / m², 700 g / m². The fluff length of the fluff layer 312 can be between 6 - 8 mm. For example, the fluff length of the fluff layer 312 can be 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm.

[0067] When the grammage of the fluff layer 312 is 550 - 700 g / m², the fluff length can be set between 6 - 8 mm. When the cleaning belt 31 is pressed against the ground to be cleaned, the interference amount of the lower end D of the abutting section 211 on the fluff layer 312 is between 0.5 - 3 mm.

[0068] In the solution of this application, when the grammage of the fluff layer 312 is 550 - 700 g / m², by setting the fluff length between 6 - 8 mm, when the cleaning belt 31 is pressed against the ground to be cleaned, the interference amount of the lower end D of the abutting section 211 on the fluff layer 312 is between 0.5 - 3 mm, so that when the cleaning device 100 is in a working state, the cleaning belt 31 and the lower end D of the abutting section 211 can maintain a slight interference, so that the cleaning belt 31 and the guiding member 20 can cooperate better, and smoothly introduce the garbage on the ground to be cleaned between the cleaning belt 31 and the conveying inclined plane 11, further improving the garbage introduction efficiency.

[0069] It should be noted that when the cleaning belt 31 is in different states, the interference amount of the lower end D of the abutting section 211 on the fluff layer 312 will change to a certain extent. However, in the solution of this embodiment, regardless of the state of the cleaning belt 31, when the cleaning belt 31 is pressed against the ground to be cleaned, the interference amount of the lower end D of the abutting section 211 on the fluff layer 312 can always be between 0.5 - 3 mm. Further, this interference amount can always be between 0.5 - 1 mm, always between 1 - 1.5 mm, always between 1.5 - 2 mm, or always between 2.5 - 3 mm.

[0070] Please continue to refer to Figure 2 that on the reference cross-section A-A, the cleaning device 100 has a first reference line E that passes through the second axis 331 and is perpendicular to the traveling direction, and the lower end D of the abutting section 211 is located on the side of the first reference line E close to the main frame 10. In some embodiments, on the reference cross-section A-A, the ratio between the distance between the lower end D of the abutting section 211 and the first reference line E and the radius of the second roller 33 is between 0.3 and 0.7.

[0071] It should be noted that if the distance between the lower end D of the abutting section 211 and the first reference line E is too close, when the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner, there may be no gap L0 between the cleaning belt 31 and the lower end D of the guiding surface 21. That is to say, the cleaning belt 31 may abut against the lower end D of the guiding surface 21. In this case, the interference amount of the guiding member 20 on the cleaning belt 31 will be too large. When the cleaning belt 31 presses against the ground to be cleaned, if the interference amount of the guiding member 20 on the cleaning belt 31 is too large, the total pressure generated by the cleaning assembly 30 under the action of gravity will be excessively distributed on the guiding member 20, resulting in insufficient pressure of the cleaning assembly 30 on the ground to be cleaned, which is not conducive to improving the cleaning effect.

[0072] If the distance between the lower end D of the abutting section 211 and the first reference line E is too far, on the one hand, when the cleaning belt 31 presses against the ground to be cleaned, the gap L0 between the cleaning belt 31 and the lower end D of the abutting section 211 will be too large. At this time, the guiding member 20 cannot effectively cooperate with the cleaning belt 31 to introduce garbage; on the other hand, the total pressure generated by the cleaning assembly 30 under the action of gravity will be excessively distributed on the ground to be cleaned, and the pressure on the guiding member 20 will be too small to smoothly convey the garbage to between the cleaning belt 31 and the transfer inclined surface 11.

[0073] In the solution of the present application, by setting the ratio between the distance between the lower end D of the abutting section 211 and the first reference line E and the radius of the second roller 33 to be between 0.3 and 0.7 on the reference cross-section A-A, on the one hand, when the cleaning belt 31 presses against the ground to be cleaned, the cleaning assembly 30 has an appropriate ground pressure to ensure the cleaning effect on the ground to be cleaned; on the other hand, when the cleaning belt 31 presses against the ground to be cleaned, the gap L0 between the cleaning belt 31 and the lower end D of the abutting section 211 can be less than or equal to a preset threshold value, so that the cleaning belt 31 and the guiding member 20 can better cooperate to introduce garbage and smoothly convey the garbage to between the cleaning belt 31 and the transfer inclined surface 11.

[0074] It should be noted that this ratio will change. For example, when the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner and when the cleaning belt 31 presses against the ground to be cleaned, this ratio can be different. In the solution of this embodiment, this ratio can always be between 0.3 and 0.7. Further, this ratio can always be between 0.3 and 0.4, always between 0.35 and 0.45, always between 0.4 and 0.5, always between 0.45 and 0.55, always between 0.5 and 0.6, always between 0.55 and 0.65, or always between 0.6 and 0.7.

[0075] Please continue to refer to Figure 2 , on the reference cross-section A-A, the cleaning device 100 has a second reference line F, and the second reference line F passes through the second axis 331 and the lower end D of the abutting section 211. In some embodiments, the angle between the first reference line E and the second reference line F is between 20° and 30°.

[0076] It should be noted that if the angle between the first reference line E and the second reference line F is too small, it may cause the total pressure generated by the cleaning assembly 30 under the action of gravity to be overly distributed on the guiding member 20, resulting in insufficient pressure of the cleaning assembly 30 on the ground to be cleaned, which is not conducive to improving the cleaning effect. If the angle between the first reference line E and the second reference line F is too large, it may cause the pressure of the cleaning assembly 30 on the ground to be cleaned to be too large and the pressure on the guiding member 20 to be too small, making it impossible to smoothly introduce the garbage and convey the garbage between the cleaning belt 31 and the transfer inclined plane 11.

[0077] In the solution of this application, by setting the angle between the first reference line E and the second reference line F to be between 20° and 30°, the total pressure generated by the cleaning assembly 30 under the action of gravity can be reasonably distributed between the ground to be cleaned and the guiding member 20. On the one hand, it can ensure that the cleaning assembly 30 has an appropriate pressure on the ground to be cleaned, which is conducive to achieving a better cleaning effect. On the other hand, when the cleaning device 100 is in a working state, the pressure of the cleaning assembly 30 on the guiding member 20 is within a reasonable range, so that the cleaning belt 31 and the guiding member 20 can cooperate better to smoothly introduce the garbage on the ground to be cleaned between the cleaning belt 31 and the transfer inclined plane 11.

[0078] It should be noted that this angle will change. For example, when the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner and when the cleaning belt 31 presses against the ground to be cleaned, this angle can be different. In the solution of this embodiment, this angle can always be between 20° and 30°. Further, this angle can always be between 20° and 25°, always between 23° and 27°, or always between 25° and 30°.

[0079] As Figure 8 shown Figure 8 is Figure 6 a schematic cross-sectional structure diagram of the guiding member 20 in [device name]. In some embodiments, when the cleaning belt 31 presses against the ground to be cleaned, the cleaning belt 31 deforms under the gravity of the cleaning assembly 30 and presses against both the abutting section 211 and the supporting section 212 simultaneously. On the reference cross-section A-A, there is a first angle between the connecting line G of the upper and lower ends of the abutting section 211 and the supporting surface C, and a second angle between the connecting line H of the upper and lower ends of the supporting section 212 and the supporting surface C. The first angle is between 40° - 50°, the second angle is between 30° - 45°, and the total weight of the second roller 33, the driving mechanism 35, and the counterweight block is between 850 - 1400 g. For example, the total weight can be 850 g, 1050 g, 1100 g, 1200 g, 1300 g, 1400 g. For example, the first angle can be 40°, 42°, 44°, 46°, 48°, 50°, and the second angle can be 30°, 34°, 37°, 40°, 42°, 45°.

[0080] In the solution of the present application, by setting the first angle between 40° - 50° and the second angle between 30° - 45°, on the one hand, the pressure of the cleaning assembly 30 on the guiding member 20 is reasonably distributed between the abutting section 211 and the supporting section 212. On the other hand, since the second roller 33 is used to press the cleaning belt 31 against the ground to be cleaned, the total pressure of the cleaning assembly 30 on the ground to be cleaned, the guiding member 20, and the transfer inclined plane 11 under the action of gravity is mainly determined by the total weight of the second roller 33, the driving mechanism 35, and the counterweight block. Therefore, the pressure of the cleaning assembly 30 on the guiding member 20 is closely related to the total weight of the second roller 33, the driving mechanism 35, and the counterweight block. When the total weight of the second roller 33, the driving mechanism 35, and the counterweight block is between 850 - 1400 g, it can ensure that the pressure of the cleaning assembly 30 on the abutting section 211 and the pressure on the supporting section 212 are respectively within a reasonable range, so as to better convey garbage.

[0081] As Figure 2 shown, in some embodiments, when the cleaning belt 31 contacts the guiding surface 21 without deformation, the supporting surface C intersects with the fluff layer 312, and the base layer 311 is located above the supporting surface C. On the reference cross-section A-A, the ratio of the minimum distance L4 from the supporting surface C to the outer peripheral surface of the base layer 311 to the maximum distance L5 from the supporting surface C to the outer peripheral surface of the fluff layer 312 is between 1.1 - 1.6. For example, the ratio can be 1.1, 1.3, 1.5, or 1.6.

[0082] Among them, the sum of the minimum distance L4 from the support surface C to the outer peripheral surface of the base layer 311 and the maximum distance L5 from the support surface C to the outer peripheral surface of the fluff layer 312 is equal to the fluff length. For example, the fluff length can be 7 mm, the maximum distance L5 from the support surface C to the outer peripheral surface of the fluff layer 312 can be 3 mm, and the minimum distance L4 from the support surface C to the outer peripheral surface of the base layer 311 can be 4 mm.

[0083] In the solution of this application, the pressure of the cleaning assembly 30 on the ground to be cleaned is closely related to the total weight of the second roller 33, the driving mechanism 35, and the counterweight. When the total weight of the second roller 33, the driving mechanism 35, and the counterweight is between 850 and 1400 g, by setting the grammage of the fluff layer 312 to be 550 - 700 g / m² and the fluff length to be between 6 - 8 mm, and by setting that when the cleaning belt 31 contacts the guiding surface 21 in a non-deformed manner, on the reference cross-section A - A, the ratio of the minimum distance L4 from the support surface C to the outer peripheral surface of the base layer 311 to the maximum distance L5 from the support surface C to the outer peripheral surface of the fluff layer 312 is between 1.1 and 1.6, the pressure of the cleaning assembly 30 on the ground to be cleaned is within a reasonable range, thereby ensuring the cleaning effect on the ground to be cleaned and enabling the garbage on the ground to be cleaned to be smoothly introduced between the cleaning belt 31 and the transfer inclined surface 11.

[0084] It should be noted that the description of "on the reference cross-section A - A, the ratio of the minimum distance L4 from the support surface C to the outer peripheral surface of the base layer 311 to the maximum distance L5 from the support surface C to the outer peripheral surface of the fluff layer 312 is between 1.1 and 1.6" in this application is defined for a specific state where the cleaning device 100 is in the factory state and the cleaning belt 31 is not wetted by liquid.

[0085] In some embodiments, when the cleaning belt 31 presses against the ground to be cleaned, the lifting height of the second roller 33 relative to the support surface C is less than or equal to 1.5 mm, so that the pressure of the cleaning assembly 30 on the ground to be cleaned is within a reasonable range, thereby ensuring the cleaning effect on the ground to be cleaned and enabling the garbage on the ground to be cleaned to be smoothly introduced between the cleaning belt 31 and the transfer inclined surface 11. For example, when the cleaning belt 31 presses against the ground to be cleaned, the lifting height of the second roller 33 relative to the support surface C can be 0.3 mm, 0.5 mm, 0.7 mm, 1.0 mm, 1.5 mm.

[0086] In some embodiments, such as Figures 1 to 3As shown in the figure, the cleaning device 100 includes a main frame 10, a guiding member 20, and a cleaning assembly 30. Among them, the main frame 10 is provided with a conveying inclined plane 11, and a wheel body 12 is arranged on the main frame 10. The wheel body 12 forms a supporting surface C for contacting the ground to be cleaned. The guiding member 20 is arranged at the lower end of the conveying inclined plane 11. The cleaning assembly 30 includes a cleaning belt 31. The cleaning belt 31 can abut against the conveying inclined plane 11 under the action of the gravity of the cleaning assembly 30 and move relative to the guiding member 20 and the conveying inclined plane 11. In the working state, the cleaning belt 31 can press against the ground to be cleaned, so that the garbage on the ground to be cleaned enters between the cleaning belt 31 and the conveying inclined plane 11 under the driving of the cleaning belt 31 and the guiding action of the guiding member 20, and is conveyed from the lower end to the upper end of the conveying inclined plane 11. A guiding surface 21 is arranged on one side of the guiding member 20 facing the cleaning belt 31. The guiding surface 21 includes an abutting section 211. When the cleaning belt 31 presses against the ground to be cleaned, the cleaning belt 31 abuts against the abutting section 211, and the lower end D of the abutting section 211 abuts against the ground to be cleaned. The cleaning device 100 has a reference section A-A, which is perpendicular to the supporting surface C and parallel to the traveling direction of the cleaning device 100. On the reference section A-A, the abutting section 211 is arranged in an arc shape protruding toward the side where the cleaning belt 31 is located.

[0087] By setting the cleaning belt 31 to abut against the conveying inclined plane 11 under the action of the gravity of the cleaning assembly 30 and being able to move relative to the guiding member 20 and the conveying inclined plane 11, in the working state, the cleaning belt 31 can press against the ground to be cleaned, so that the garbage on the ground to be cleaned enters between the cleaning belt 31 and the conveying inclined plane 11 under the driving of the cleaning belt 31 and the guiding action of the guiding member 20, and is conveyed from the lower end to the upper end of the conveying inclined plane 11. Thus, there is no need to set up a negative pressure fan to suck the garbage on the ground to be cleaned, which is beneficial to reducing the noise generated by the cleaning device 100 in the working state.

[0088] Furthermore, on the reference section A-A, the abutting section 211 is arranged in an arc shape protruding toward the side where the cleaning belt 31 is located. On the one hand, at the position of the guiding member 20 corresponding to the abutting section 211, that is, the lower part of the guiding member 20, has a relatively large thickness. In this way, it is beneficial to reduce the possibility of the lower part of the guiding member 20 being bent or deformed. When the cleaning device 100 is in the working state, the lower part of the guiding member 20 can better abut against the ground to be cleaned to pick up garbage and / or scrape the water stains on the ground to be cleaned. Moreover, the increase in thickness is also beneficial to reducing the possibility of the lower part of the guiding member 20 being damaged. On the other hand, since the garbage is picked up from the ground to be cleaned onto the abutting section 211, the abutting section 211 protruding toward the side where the cleaning belt 31 is located can better interfere with the cleaning belt 31, thereby enhancing the pressure between the cleaning belt 31 and the abutting section 211, which is beneficial to better guiding the garbage.

[0089] Further, as Figure 8 shown, on the reference cross-section A-A, the maximum protruding height of the abutting section 211 relative to the connecting line G between the upper and lower ends of the abutting section 211 is less than or equal to 0.25 mm. It should be noted that when the abutting section 211 is arc-shaped, the connecting line G between the upper and lower ends of the abutting section 211 refers to the chord line corresponding to the abutting section 211 on the reference cross-section A-A. If the maximum protruding height of the abutting section 211 relative to the connecting line G between the upper and lower ends of the abutting section 211 is too large, it will be difficult for the garbage to cross the abutting section 211 and be transported onto the conveying inclined plane 11, resulting in a low efficiency of the cleaning device 100 in picking up the garbage. For example, the maximum protruding height of the abutting section 211 relative to the connecting line G between the upper and lower ends of the abutting section 211 can be 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm.

[0090] In some embodiments, on the reference cross-section A-A, the chord length of the abutting section 211 (i.e., the length of the chord line G corresponding to the abutting section 211 on the reference cross-section A-A) is between 2 - 3.5 mm. For example, the chord length of the abutting section 211 can be 2 mm, 2.5 mm, 3 mm, 3.5 mm. By reasonably setting the chord length of the abutting section 211, it is beneficial to better introduce the garbage.

[0091] In some embodiments, on the reference cross-section A-A, the arc-chord ratio of the abutting section 211 is between 1.02 - 1.2. For example, the arc-chord ratio of the abutting section 211 can be 1.02, 1.05, 1.1, 1.15, 1.2. If the arc-chord ratio of the abutting section 211 is too small, the thickness of the lower part of the guiding member 20 cannot be effectively increased. If the arc-chord ratio of the abutting section 211 is too large, it will be difficult for the garbage to cross the abutting section 211 and be transported onto the conveying inclined plane 11. By setting the arc-chord ratio of the abutting section 211 within a reasonable range, on the one hand, the thickness of the lower part of the guiding member 20 can be effectively increased. In this way, when the cleaning device 100 is in a working state, the lower part of the guiding member 20 can better abut against the ground to be cleaned to pick up the garbage. On the other hand, the abutting section 211 can better interfere with the cleaning belt 31, thereby enhancing the pressure between the cleaning belt 31 and the abutting section 211, which is beneficial to better introduce the garbage.

[0092] As Figure 8As shown, the angle between the tangent line I of the abutting section 211 at the lower end D of the abutting section 211 and the support surface C is between 55° and 70°, and the angle between the tangent line J of the abutting section 211 at the upper end of the abutting section 211 and the support surface C is between 15° and 30°. For example, the angle between the tangent line I of the abutting section 211 at the lower end D of the abutting section 211 and the support surface C can be 55°, 60°, 62°, 65°, 70°, and the angle between the tangent line J of the abutting section 211 at the upper end of the abutting section 211 and the support surface C can be 15°, 20°, 25°, 30°.

[0093] By reasonably setting the angle between the tangent line I of the abutting section 211 at the lower end D of the abutting section 211 and the support surface C, it is beneficial to better guide the garbage from the ground to be cleaned onto the transfer inclined plane 11. By reasonably setting the angle between the tangent line J of the abutting section 211 at the upper end of the abutting section 211 and the support surface C, the abutting section 211 can cooperate with the support section 212 to form a concave surface that is recessed toward the side away from the cleaning belt 31. In this way, the guiding surface 21 can better adapt to the shape of the second roller 33, thereby controlling the interference amount of the guiding member 20 on the cleaning belt 31 within a reasonable range. On the one hand, it can better guide the garbage, and on the other hand, it can ensure the pressure of the cleaning assembly 30 on the ground to be cleaned.

[0094] In some embodiments, the adapting section 214 is arranged between the abutting section 211 and the transfer inclined plane 11. The second roller 33 further presses the cleaning belt 31 against the adapting section 214. The adapting section 214 is arranged in an arc shape that is recessed toward the side away from the cleaning belt 31. In this way, the adapting section 214 can better adapt to the shape of the second roller 33 and control the interference amount of the adapting section 214 on the cleaning belt 31 within a reasonable range. On the one hand, it can better guide the garbage, and on the other hand, it can ensure the pressure of the cleaning assembly 30 on the ground to be cleaned.

[0095] In some embodiments, when the cleaning belt 31 is in the factory state without being wetted by liquid, the ratio of the sum of the radius of the second roller 33 and the thickness of the cleaning belt 31 in the natural state to the radius of curvature of the adapting section 214 is between 1.0 and 1.3. For example, this ratio can be 1.0, 1.1, 1.2, 1.3.

[0096] As mentioned above, when the cleaning belt 31 is in the factory state without being soaked by liquid, the fluff layer 312 is relatively fluffy and its thickness is relatively large. At this time, the sum of the radius of the second roller 33 and the thickness of the cleaning belt 31 in the natural state can be slightly larger than the radius of curvature of the adapter section 214. In this way, when the cleaning belt 31 is in the running state without being soaked by liquid, the fluff layer 312 will be relatively compacted and its thickness will be relatively smaller, so that the sum of the radius of the second roller 33 and the thickness of the cleaning belt 31 in the natural state can be slightly smaller than the radius of curvature of the adapter section 214. When the cleaning belt 31 is pressed against the ground to be cleaned, the cleaning belt 31 can better fit the adapter section, so as to better guide the garbage.

[0097] In some embodiments, when the cleaning belt 31 is in an operating state without being soaked in liquid, the ratio of the sum of the radius of the second roller 33 and the thickness of the cleaning belt 31 in the natural state to the curvature radius of the adaptation section 214 is between 0.8-1.1. For example, the ratio can be 0.8, 0.9, 0.95, 1.0, 1.1. In this way, the adaptation section 214 can better adapt to the shape of the second roller 33, thereby better guiding the garbage.

[0098] It should be noted that the “cleaning belt 31 in a natural state” described in the present application refers to a state in which the cleaning belt 31 is naturally wound around the first roller 32 and the second roller 33 and is not compressed.

[0099] In some embodiments, the first transition section 213 and the adapter section 214 are respectively located on the side of the line between the upper end of the adapter section 214 and the lower end of the first transition section 213 (i.e., the line H between the upper and lower ends of the support section 212) away from the cleaning belt 31. In other words, the first transition section 213 and the adapter section 214 as a whole form a concave surface that is recessed toward the side away from the cleaning belt 31, so that the support section 212 can better adapt to the shape of the second roller 33, and the interference amount of the support section 212 on the cleaning belt 31 is controlled within a reasonable range, which can better guide the garbage on one hand, and ensure the pressure of the cleaning component 30 on the ground to be cleaned on the other hand.

[0100] In some embodiments, the radius of curvature of the first transition section 213 and the radius of curvature of the adapter section 214 may be substantially the same, and the first transition section 213 and the adapter section 214 together constitute a connecting section, which is connected between the abutting section 211 and the second transition section 215 so that the abutting section 211 and the second transition section 215 have a smooth transition. When the cleaning belt 31 is in a factory state without being soaked in liquid, the ratio of the sum of the radius of the second roller 33 and the thickness of the cleaning belt 31 in a natural state to the radius of curvature of the connecting section is between 1.0 and 1.3. For example, the ratio may be 1.0, 1.1, 1.2, or 1.3.

[0101] As described above, when the cleaning belt 31 is in the factory state without being wetted by liquid, the fluff layer 312 is relatively fluffy and has a relatively large thickness. At this time, the sum of the radius of the second roller 33 and the thickness of the cleaning belt 31 in the natural state can be slightly greater than the radius of curvature of the connecting section. In this way, when the cleaning belt 31 is in the running state without being wetted by liquid, the fluff layer 312 will be relatively compacted and its thickness will become relatively smaller, so that the sum of the radius of the second roller 33 and the thickness of the cleaning belt 31 in the natural state can be slightly less than the radius of curvature of the connecting section. When the cleaning belt 31 presses against the ground to be cleaned, the cleaning belt 31 can better fit the connecting section, so that the garbage can be better conveyed.

[0102] In some embodiments, when the cleaning belt 31 is in the running state without being wetted by liquid, the ratio of the sum of the radius of the second roller 33 and the thickness of the cleaning belt 31 in the natural state to the radius of curvature of the connecting section is between 0.8 and 1.1. For example, the ratio can be 0.9, 0.95, 1.0, 1.1. In this way, the connecting section can better adapt to the shape of the second roller 33. When the cleaning belt 31 presses against the ground to be cleaned, the cleaning belt 31 can better fit the connecting section, so that the garbage can be better conveyed.

[0103] In some embodiments, the angle between the chord line M of the first transition section 213 and the support surface C can be less than the angle between the chord line N of the adaptation section 214 and the support surface C. The angle between the chord line M of the first transition section 213 and the support surface C is between 25° and 35°, and the angle between the chord line N of the adaptation section 214 and the support surface C is between 35° and 50°, so as to better adapt to the conveyance of garbage.

[0104] For example, the angle between the chord line M of the first transition section 213 and the support surface C can be 25°, 28°, 30°, 33°, 35°, and the angle between the chord line N of the adaptation section 214 and the support surface C can be 35°, 38°, 40°, 42°, 45°, 48°, 50°.

[0105] In some embodiments, the ratio of the chord length of the abutting section 211 to the chord length of the first transition section 213 is between 0.8 and 1.2, and the ratio of the chord length of the abutting section 211 to the chord length of the adaptation section 214 is between 0.3 and 0.7, so as to better convey the garbage. For example, the ratio of the chord length of the abutting section 211 to the chord length of the first transition section 213 can be 0.8, 1.0, 1.1, 1.2, and the ratio of the chord length of the abutting section 211 to the chord length of the adaptation section 214 can be 0.3, 0.4, 0.5, 0.7.

[0106] In a specific embodiment, the chord length of the abutting section 211 may be 2.6 mm, the chord length of the first transition section 213 may be 2.0 mm, and the chord length of the adaptation section 214 may be 4.1 mm. Of course, the present application does not limit this, and those skilled in the art can make selections according to actual needs.

[0107] In the above description of this specification, unless otherwise clearly specified and limited, terms such as "fixed", "installed", "connected" or "coupled" should be understood in a broad sense. For example, for the term "connected", it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the communication inside two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly limited in this specification, those skilled in the art can understand the specific meanings of the above terms in the present application according to specific circumstances.

[0108] According to the above description of this specification, those skilled in the art can also understand the terms used as follows. For example, terms indicating orientation or position relationship such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise" are based on the orientation or position relationship shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present application and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operated in the specific orientation. Therefore, the above terms of orientation or position relationship cannot be understood or interpreted as a limitation to the solution of the present application.

[0109] In addition, the terms "first" or "second" etc. used in this specification to refer to numbers or ordinals are only for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "a plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically limited.

[0110] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A cleaning device, characterized in that, Comprising: A main frame provided with a conveying inclined plane, a wheel body is arranged on the main frame, and the wheel body forms a supporting surface for contacting the ground to be cleaned; A guiding member arranged at the lower end of the conveying inclined plane; A cleaning assembly including a cleaning belt, the cleaning belt can be abutted against the conveying inclined plane under the gravity of the cleaning assembly, and move relative to the guiding member and the conveying inclined plane. In the working state, the cleaning belt can be pressed against the ground to be cleaned, so that the garbage on the ground to be cleaned enters between the cleaning belt and the conveying inclined plane under the driving of the cleaning belt and the guiding of the guiding member, and is conveyed from the lower end to the upper end of the conveying inclined plane; Wherein, the cleaning device has a reference section, the reference section is perpendicular to the supporting surface and parallel to the traveling direction of the cleaning device, a guiding surface is arranged on the guiding member facing the cleaning belt side. When the cleaning belt contacts the guiding surface in an undeformed manner, in the reference section, there is a gap between the cleaning belt and the lower end of the guiding surface. When the cleaning belt is pressed against the ground to be cleaned, the cleaning belt deforms under the gravity of the cleaning assembly, so that the gap between the cleaning belt and the lower end of the guiding surface decreases.

2. The cleaning device according to claim 1, characterized in that, When the cleaning belt is pressed against the ground to be cleaned, the lower end of the guiding surface abuts against the ground to be cleaned. In the reference section, the gap between the cleaning belt and the lower end of the guiding surface is less than or equal to 0.6 mm; or When the cleaning belt is pressed against the ground to be cleaned, the lower end of the guiding surface abuts against the ground to be cleaned, and the cleaning belt abuts against the lower end of the guiding surface.

3. The cleaning device according to claim 2, characterized in that, The cleaning belt includes a base layer and a fluff layer arranged on the outer peripheral surface of the base layer. When the cleaning belt is pressed against the ground to be cleaned, the ratio of the interference amount of the lower end of the guiding surface on the fluff layer to the fluff length of the fluff layer is between 0.1 and 0.

5.

4. The cleaning device according to claim 3, wherein The guiding surface includes an abutting section and a supporting section connected to the upper end of the abutting section. The lower end of the guiding surface is the lower end of the abutting section. When the cleaning belt is pressed against the ground to be cleaned, the ratio of the interference amount of the supporting section on the fluff layer to the interference amount of the lower end of the abutting section on the fluff layer is between 1.5 and 2.

5.

5. The cleaning device according to claim 4, characterized in that, The fluff length of the fluff layer is between 6 and 8 mm, the interference amount of the lower end of the abutting section on the fluff layer is between 0.5 and 3 mm, and the grammage of the fluff layer is 550 - 700 g / m².

6. The cleaning device according to claim 2, characterized in that, The cleaning assembly further includes a first roller, a second roller and a connecting rod assembly. The connecting rod assembly includes a first end and a second end which are oppositely arranged. The first roller is rotatably supported at the first end of the connecting rod assembly. The first roller can rotate around a first axis. The second roller is supported at the second end of the connecting rod assembly and can rotate around a second axis parallel to the first axis. The connecting rod assembly is rotatably supported on the main frame. The cleaning belt is annularly arranged around the peripheries of the first roller and the second roller. The second roller is used to press the cleaning belt against the ground to be cleaned. The traveling direction is perpendicular to the first axis and the second axis. In the reference section, the cleaning device has a first reference line which passes through the second axis and is perpendicular to the traveling direction. The lower end of the guiding surface is located on the side of the first reference line close to the main frame. In the reference section, the ratio between the distance between the lower end of the guiding surface and the first reference line and the radius of the second roller is between 0.3 and 0.

7.

7. The cleaning device according to claim 6, characterized in that, In the reference section, the cleaning device further has a second reference line which passes through the second axis and the lower end of the guiding surface. The included angle between the first reference line and the second reference line is between 20° and 30°.

8. The cleaning device according to claim 6, characterized in that, The guiding surface includes an abutting section and a supporting section connected to the upper end of the abutting section. The lower end of the guiding surface is the lower end of the abutting section. When the cleaning belt is pressed against the ground to be cleaned, the cleaning belt is deformed under the gravity of the cleaning assembly and is pressed against both the abutting section and the supporting section simultaneously. In the reference section, there is a first included angle between the connecting line of the upper and lower ends of the abutting section and the supporting surface, and there is a second included angle between the connecting line of the upper and lower ends of the supporting section and the supporting surface. The first included angle is between 40° and 50°, and the second included angle is between 30° and 45°. The cleaning device further includes a driving mechanism and a counterweight block arranged in the second roller. The total weight of the second roller, the driving mechanism and the counterweight block is between 850 and 1400 g.

9. The cleaning device according to claim 8, characterized in that, The cleaning belt includes a base layer and a fluff layer arranged on the outer peripheral surface of the base layer. When the cleaning belt contacts the guiding surface in a non-deformed manner, the supporting surface intersects with the fluff layer. The base layer is located above the supporting surface. In the reference section, the ratio between the minimum distance from the supporting surface to the outer peripheral surface of the base layer and the maximum distance from the supporting surface to the outer peripheral surface of the fluff layer is between 1.1 and 1.

6.

10. The cleaning device according to claim 8, characterized in that, When the cleaning belt is pressed against the ground to be cleaned, the lifting height of the second roller relative to the supporting surface is less than or equal to 1.5 mm; or In the reference section, the abutting section is arc-shaped and protrudes toward the side where the cleaning belt is located, and the maximum protruding height of the abutting section relative to the connecting line of the upper and lower ends of the abutting section is less than or equal to 0.25 mm.

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