Cleaning equipment

Abstract

The utility model provides cleaning equipment. The cleaning equipment comprises a machine body assembly, a cleaning assembly and a driving assembly. The cleaning assembly comprises a rolling cleaning part and a rack, the rolling cleaning part is arranged on the rack, and the rack is connected to the machine body assembly and can move in the first direction; the driving assembly comprises a motor, a gear transmission mechanism and a rack, the rack extends in the first direction and is arranged on the rack, and a power output shaft of the motor drives the rack to move in the first direction through the gear transmission mechanism; wherein the first direction is parallel to the axis direction of the rolling cleaning piece. According to the cleaning equipment provided by the embodiment of the invention, the rack can be driven by the rack to move in the axis direction of the rolling cleaning piece so as to change the cleaning area of the rolling cleaning piece, and therefore cleaning blind areas can be reduced.

Description

Technical Field

[0001] The present application relates to the field of cleaning, and in particular to a cleaning device. Background Art

[0002] In the related art, the cleaning device works on a supporting surface, and its rolling cleaning member can rotate around a fixed axis to clean the supporting surface, but the position of the rolling cleaning member is fixed relative to the body bracket. For positions close to the wall, it is difficult for the rolling cleaning member to clean in place, resulting in a cleaning blind spot. Utility Model Content

[0003] In view of this, an embodiment of the present application hopes to provide a cleaning device that changes the cleaning area of ​​a rolling cleaning member by driving a rack, thereby reducing cleaning blind spots.

[0004] An embodiment of the present application provides a cleaning device, comprising: a body assembly;

[0005] A cleaning assembly, comprising a rolling cleaning member and a frame, wherein the rolling cleaning member is disposed on the frame, and the frame is connected to the body assembly and can move along a first direction; and

[0006] A driving assembly, comprising a motor, a gear transmission mechanism and a rack, wherein the rack extends along the first direction and is disposed on the frame, and a power output shaft of the motor drives the rack to move along the first direction through the gear transmission mechanism;

[0007] Wherein, the first direction is parallel to the axial direction of the rolling cleaning member.

[0008] In some embodiments, the frame has a first position and a second position; wherein, in a plane projection perpendicular to the height direction of the cleaning device, the projection outline of the rolling cleaning member in the first position does not exceed the projection outline of the body assembly; a portion of the projection outline of the rolling cleaning member in the second position extends beyond the projection outline of the first side of the body assembly along the first direction.

[0009] In some embodiments, in a plane projection perpendicular to the height direction of the cleaning device, a portion of the projection profile of the rolling cleaning member in the second position exceeds the reference line or is flush with the reference line;

[0010] The reference line is a moving track of an edge of the body component along the first side of the first direction when the cleaning device moves.

[0011] In some embodiments, the gear transmission mechanism includes at least one transmission gear, the axis of the power output shaft of the motor is perpendicular to the first direction, and the axis of the transmission gear is parallel to the axis of the power output shaft.

[0012] In some embodiments, the rack is fixed to one side of the frame along the second direction, and the motor and the rack are located on the same side of the frame along the second direction, wherein the second direction is perpendicular to the first direction.

[0013] In some embodiments, the body assembly includes a bracket and a main body, the bracket is arranged on the main body, the cleaning assembly is arranged below the bracket, and the motor is installed on the main body.

[0014] In some embodiments, the body assembly includes a bracket and a main body, the bracket is detachably connected to the main body, the cleaning assembly is connected to the bracket and is located below the bracket, and the bracket and the cleaning assembly form a pre-assembled whole.

[0015] In some embodiments, the bracket has a slide groove extending along the first direction, the top end of the frame is connected to a hanging portion, the frame is hung on the slide groove through the hanging portion, and the hanging portion can slide along the slide groove.

[0016] In some embodiments, the bracket includes a plate body, a portion of the plate body protrudes upward and defines a first protrusion, the first protrusion extends along the first direction, and a groove is formed on the bottom side of the first protrusion, and a portion of the frame protrudes upward and defines a second protrusion, and the second protrusion extends into the groove.

[0017] In some embodiments, the cleaning device includes at least one rolling element, which is rollably disposed in the groove and / or the second protrusion, and is at least partially located in the gap between the bottom side of the groove and the top side of the second protrusion along the height direction, so that the plate body and the frame are rollingly fitted through the rolling element.

[0018] In some embodiments, the rack faces upward, and the gear transmission mechanism is located above the rack.

[0019] In the cleaning device provided in the embodiment of the present application, the frame can move along the axial direction of the rolling cleaning member under the drive of the rack to change the cleaning area of ​​the rolling cleaning member, thereby facilitating the reduction of cleaning blind spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a partial structural schematic diagram of a cleaning device in one embodiment of the present application, wherein the frame is in a first position;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure when the rack of the structure is in the second position;

[0022] Figure 3 for Figure 1 A cross-sectional view of a certain section of a structure;

[0023] Figure 4 for Figure 1 A cross-sectional view of another cross section of the structure in FIG.

[0024] Figure 5 for Figure 4 An enlarged schematic diagram of the structure at A in FIG.

[0025] Figure 6 This is a schematic diagram of the structure of a rolling cleaning member in one embodiment of the present application;

[0026] Figure 7 This is a schematic diagram of the structure of a rack and gear transmission mechanism in one embodiment of the present application;

[0027] Figure 8 A bottom view of a cleaning device in one embodiment of the present application, wherein the frame is in a first position;

[0028] Fig. 9 for Figure 8 A schematic diagram of the structure when the rack of the structure is in the second position;

[0029] In the above drawings, for reference, arrow R indicates the first direction, Ra indicates the first side, Rb indicates the second side; and arrow S indicates the second direction.

[0030] Description of Reference Numerals

[0031] Body assembly 10; bracket 101; main body 102; mounting column 151; plate 121; first protrusion 131a; groove 131b;

[0032] Cleaning assembly 20; rolling cleaning member 201; driving shaft 211; frame 202; receiving chamber 202a; hanging portion 222; second protruding portion 242a;

[0033] Drive assembly 30; motor 311; rack 305; gear transmission mechanism 306; transmission gear 316;

[0034] Driving wheel 401; rolling element 60; side wall 70. DETAILED DESCRIPTION

[0035] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0036] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0038] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0040] In the related art, the cleaning device moves on a supporting surface, such as a floor, and has a corresponding driving mechanism to drive a rolling cleaning member to rotate around a fixed axis so that the rolling cleaning member cleans the supporting surface, that is, relative to the body assembly, the rolling cleaning member can only rotate but not move horizontally. When the cleaning device moves along the side wall to clean the floor, the body assembly is close to the wall. Since the rolling cleaning member cannot move horizontally relative to the body assembly, the body assembly close to the wall will make it difficult for the rolling cleaning member to clean the floor near the side wall to a certain extent, resulting in a cleaning blind spot.

[0041] In view of this, the present application embodiment provides a cleaning device, please refer to Figure 1 and Figure 7 The cleaning device includes a body component 10, a cleaning component 20 and a driving component 30.

[0042] It should be noted that the form of the cleaning device is not limited. For example, in one embodiment, the cleaning device includes a handle, which is provided on the body assembly 10. The user holds the handle and pushes the body assembly 10 to move. During the movement of the body assembly 10, the cleaning assembly 20 cleans the supporting surface. In this embodiment, the cleaning device can be a mop or a vacuum cleaner.

[0043] In another embodiment, see Figure 8 The cleaning device is a cleaning robot, and the body assembly 10 is the main structure of the cleaning robot. Exemplarily, the cleaning robot further includes a plurality of driving wheels 401, which are arranged on the body assembly 10, and the connecting line of at least two driving wheels 401 is parallel to the axial direction of the cleaning assembly 20, and is used to drive the cleaning robot to move on the support surface, and the moving direction may be perpendicular to the axial direction of the cleaning assembly 20.

[0044] The cleaning assembly 20 includes a rolling cleaning member 201 and a frame 202 . The rolling cleaning member 201 is disposed on the frame 202 . The frame 202 is connected to the body assembly 10 and can move along the first direction R.

[0045] That is, the frame 202 provides installation support and installation space for the rolling cleaning member 201, and the rolling cleaning member 201 can roll around its own axis. Figure 3 The frame 202 has a receiving cavity 202a, and the rolling cleaning member 201 is rotatably disposed in the receiving cavity 202a. The bottom side of the receiving cavity 202a is open, and a part of the rolling cleaning member 201 extends out from the open bottom side of the receiving cavity 202a.

[0046] It should be noted that the rolling cleaning member 201 is used to contact with a support surface, such as a floor. The rolling cleaning member 201 can play a cleaning function during the rolling process. In one embodiment, the circumferential surface of the rolling cleaning member 201 has a plurality of tufts of bristles, and the bristles can clean the support surface. Exemplarily, in another embodiment, the circumferential surface of the rolling cleaning member 201 has a flannel, and the flannel can play a mopping function.

[0047] The form of the rolling cleaning member 201 is not limited. For example, please refer to Figure 4 The rolling cleaning member 201 is a roller type, and its cross section is roughly circular; for another example, please refer to Figure 6 The rolling cleaning member 201 is a flat drum crawler type, and its driving shaft 211 is rotatable. The axis of the rolling cleaning member 201 is also the axis of the driving shaft 211 (the center line shown in the figure).

[0048] It is worth noting that when the frame 202 moves along the first direction R, the rolling cleaning member 201 also moves accordingly.

[0049] The driving assembly 30 includes a motor 311 , a gear transmission mechanism 306 and a rack 305 . The rack 305 extends along a first direction R and is disposed on the frame 202 . The power output shaft of the motor 311 drives the rack 305 to move along the first direction R through the gear transmission mechanism 306 . The first direction R is parallel to the axis direction of the rolling cleaning member 201 .

[0050] This indicates that the power output shaft of the motor 311 can rotate, and its power is transmitted to the rack 305 through the gear transmission mechanism 306, and converted into the linear movement of the rack 305. The rack 305 moves, the frame 202 also moves, and the rolling cleaning member 201 moves with the frame 202, thereby changing the cleaning area of ​​the rolling cleaning member 201 on the support surface.

[0051] In the cleaning device provided in the embodiment of the present application, the frame 202 can move along the axial direction of the rolling cleaning member 201 under the drive of the rack 305 to change the cleaning area of ​​the rolling cleaning member 201, thereby facilitating the reduction of cleaning blind areas.

[0052] In some embodiments, the rack 202 has a first position and a second position. In the projection perpendicular to the height direction of the cleaning device, see Figure 8 , the projection outline of the rolling cleaning member 201 when in the first position does not exceed the projection outline of the fuselage assembly 10.

[0053] It can be understood that when the frame 202 is in the first position, the rolling cleaning member 201 is also in the first position; when the frame 202 is in the second position, the rolling cleaning member 201 is also in the second position.

[0054] The projection perpendicular to the height direction refers to the projection relationship applied to the cleaning device based on the normal of the support surface on which the cleaning device is located, and the projection can also be called a top-down projection or an upward-looking projection. The projection contour not exceeding the rolling cleaning member 201 is included in the projection contour of the fuselage assembly 10, or the projection contour of the rolling cleaning member 201 at least partially overlaps with the projection contour of the fuselage assembly 10.

[0055] When the rolling cleaning member 201 is in the first position, from the perspective of the top projection, the structure of the body assembly 10 blocks the rolling cleaning member 201. When the cleaning device moves on the support surface, obstacles that may be encountered, such as table legs, walls, etc., will first contact the body assembly 10. In other words, along the moving direction of the cleaning device, part of the structure of the body assembly 10 blocks the rolling cleaning member 201, so that the rolling cleaning member 201 keeps a distance from the obstacles, that is, the body assembly 10 provides anti-collision protection for the rolling cleaning member 201.

[0056] See also Fig. 9 A portion of the projection contour of the rolling cleaning member 201 in the second position extends beyond the projection contour of the first side Ra of the fuselage assembly 10 along the first direction R.

[0057] The first side Ra is a side pointing along the first direction R, and the second side Rb is opposite to the first side Ra. The relative positions of the first side Ra and the second side Rb are not limited, and the drawings are only for reference to facilitate understanding of the present solution.

[0058] When the rolling cleaning member 201 is in the second position, from the perspective of the top projection, the rolling cleaning member 201 partially extends out of the body assembly 10, that is, the body assembly 10 releases the shielding of the extended portion of the rolling cleaning member 201, and accordingly, when the body assembly 10 approaches an obstacle, the rolling cleaning member 201 approaches the obstacle and cleans the supporting surface area around the obstacle, thereby reducing the cleaning blind spot.

[0059] For some examples, see Fig. 9 , in a plane projection perpendicular to the height direction of the cleaning device, a portion of the projection profile of the rolling cleaning member 201 in the second position exceeds the reference line or is flush with the reference line. The reference line is the movement trajectory of the edge of the first side Ra of the body assembly 10 along the first direction R when the cleaning device moves.

[0060] That is, the portion corresponding to the maximum dimension of the first side Ra of the body assembly 10 along the first direction R and the route swept by the cleaning device when it moves form a reference line, such as Figure 8 and Fig. 9 When the rolling cleaning member 201 is in the second position, the area it cleans extends along the path of the reference line, so that the area around the reference line is cleaned. The shape of the reference line depends on the moving route of the cleaning device, and the moving route of the cleaning device is affected by obstacles on the support surface.

[0061] For example, see Figure 8When the cleaning device moves along the side wall 70, one side of the body assembly 10 remains close to the side wall 70, and in the plane projection perpendicular to the height direction of the cleaning device, the reference line and the projection of the side wall 70 are substantially coincident. If the rolling cleaning member 201 is in the first position, one end of the rolling cleaning member 201 facing the first side Ra of the first direction R is far away from the side wall 70, and the floor between the rolling cleaning member 201 and the side wall 70 cannot be cleaned, resulting in a cleaning blind area.

[0062] See also Fig. 9 When the rolling cleaning member 201 is in the second position, the distance between the end of the rolling cleaning member 201 facing the first side Ra of the first direction R and the side wall 70 becomes smaller, and the above-mentioned cleaning blind area is cleaned to be reduced.

[0063] The gear transmission mechanism 306 may be in any form. Figure 7 The gear transmission mechanism 306 is a worm gear, which can be connected to the power output shaft of the motor 311, and the axial direction of the worm gear is parallel to the axial direction of the power output shaft and also parallel to the length direction of the rack 305. When driven by the motor 311, the worm gear moves the rack 305 along its first direction R.

[0064] For some examples, please refer to Figure 1 The gear transmission mechanism 306 includes at least one transmission gear 316 , the axis of the power output shaft of the motor 311 is perpendicular to the first direction R, and the axis of the transmission gear 316 is parallel to the axis of the power output shaft.

[0065] That is, the power of the motor 311 is transmitted to the rack 305 through the transmission gear 316. In this way, the driving assembly 30 has a simple structure and high mechanical efficiency, and the transmission gear 316 has less wear and tear and a long service life.

[0066] In one embodiment, the gear transmission mechanism 306 may further include a plurality of transmission gears 316 , which mesh with each other to form a gear set to transmit the power of the motor 311 to the rack 305 . The setting of the gear set makes the design of the power transmission route more flexible.

[0067] For some examples, please refer to Figure 1 and Figure 2 The rack 305 is fixed to one side of the frame 202 along the second direction S, and the motor 311 and the rack 305 are located on the same side of the frame 202 along the second direction S, wherein the second direction S is perpendicular to the first direction R.

[0068] This indicates that the provision of the rack 305 reduces the occupancy of the frame 202 structure, freeing up space for installing other components. The motor 311 and the rack 305 are provided on the same side, which is beneficial to the arrangement of the motor 311 and reduces the height dimension of the motor 311 connected to the rack 305, thereby reducing space occupancy.

[0069] For some examples, see Figure 1 , the rack 305 faces upward, and the gear transmission mechanism 306 is located above the rack 305.

[0070] It is understandable that the cleaning device may encounter different supporting surface terrains during movement, such as wooden floors or carpets, etc. The height of the above terrain changes, and the rolling cleaning member 201 in contact with it is subjected to force and has a tendency to move upward along the height direction of the cleaning device, and the same is true for the frame 202 connected to the rolling cleaning member 201. The rack 305 faces upward and meshes with the gear transmission mechanism 306, which not only has a suppressive effect on the upward movement trend of the frame 202, but also utilizes the upward movement trend of the frame 202 to always maintain a good meshing state with the gear transmission mechanism 306.

[0071] For some examples, see Figure 1 and Figure 8 The body assembly 10 includes a bracket 101 and a main body 102 , the bracket 101 is disposed on the main body 102 , the cleaning assembly 20 is disposed below the bracket 101 , and the motor 311 is installed on the main body 102 .

[0072] The main body 102 is the main structure of the cleaning device, and the driving wheel 401 is disposed on the main body 102. For the cleaning device, the main body 102 also has functions such as environmental perception or route planning through the sensors or main control chips carried thereon, and controls the cleaning device to move along a predetermined route.

[0073] For some examples, see Figure 1 and Figure 8 The bracket 101 is detachably connected to the main body 102, the cleaning component 20 is connected to the bracket 101 and is located below the bracket 101, and the bracket 101 and the cleaning component 20 form a pre-assembled whole.

[0074] The pre-assembled whole facilitates the manufacture and assembly of the cleaning device. In other words, the bracket 101 and the cleaning assembly 20 can be assembled first to form the pre-assembled whole, and then assembled to the main body. In one embodiment, the bracket 101 has a mounting post 151 for connecting the bracket 101 to the main body 102.

[0075] For some examples, see Figure 1 , Figure 4 and Figure 5 The bracket 101 has a slide groove 101b extending along the first direction R, and the top of the frame 202 is connected with a hanging part 222. The frame 202 is hung on the slide groove 101b through the hanging part 222, and the hanging part 222 can slide along the slide groove 101b.

[0076] That is, along the height direction of the cleaning device, the frame 202 can at least be subjected to the pulling force of the hooking portion 222, and the hooking portion 222 can at least abut against the slide groove 101b in the downward direction. In addition, when the frame 202 moves between the first position and the second position, the hooking portion 222 moves therewith, that is, the hooking portion 222 can slide along the slide groove 101b.

[0077] In this way, the rack 202 is connected to the bracket 101 through the hooking portion 222, so that it is prevented from being separated from the bracket 101 due to its own gravity. The slide groove 101b provides an avoidance and guidance function for the movement of the hooking portion 222.

[0078] For some examples, see Figure 4 and Figure 5 The bracket 101 includes a plate body 121, a portion of the plate body 121 protrudes upward and defines a first protrusion 131a, the first protrusion 131a extends along the first direction R, and a groove 131b is formed on the bottom side of the first protrusion 131a, a portion of the frame 202 protrudes upward and defines a second protrusion 242a, and the second protrusion 242a extends into the groove 131b.

[0079] That is, the first protrusion 131a is disposed above the second protrusion 242a, and the second protrusion 242a extends into the groove 131b, so that the plate 121 and the frame 202 are stopped and matched to prevent the frame 202 from moving upward.

[0080] The provision of the first protrusion 131a is beneficial to improving the structural strength of the plate body 121, and provides an escape space for the second protrusion 242a by forming the groove 131b, which is beneficial to a compact structure; in addition, in the horizontal direction perpendicular to the first direction R, it can also play a certain limiting role, reducing the deflection amplitude of the frame 202 when moving along the first direction R, which is beneficial to reducing the shear force on the hanging part of the frame 202.

[0081] For some examples, see Figure 4 and Figure 5 The cleaning device includes at least one rolling member 60, which is rollably disposed in the groove 131b and / or the second protrusion 242a, and is at least partially located in the gap between the bottom side of the groove 131b and the top side of the second protrusion 242a along the height direction, so that the plate body 121 and the frame 202 are rollingly fitted through the rolling member 60.

[0082] As mentioned above, the plate 121 cooperates with the frame 202 to stop, so when the two move relative to each other, the rolling element 60 can reduce the friction resistance and make the movement more stable.

[0083] It should be noted that there are three situations in which the rolling member 60 is rollably disposed on the groove 131b and / or the second protrusion 242a: the first situation is that the rolling member 60 is disposed on the groove 131b. The second situation is that the rolling member 60 is disposed on the second protrusion 242a. The third situation is that the rolling member 60 is sandwiched between the groove 131b and the second protrusion 242a. In each of the above embodiments, the number of the rolling member 60 can be one or more.

[0084] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0085] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cleaning device, characterized in that: include: fuselage components; A cleaning assembly, comprising a rolling cleaning member and a frame, wherein the rolling cleaning member is arranged on the frame, and the frame is connected to the body assembly and can move along a first direction; as well as A driving assembly, comprising a motor, a gear transmission mechanism and a rack, wherein the rack extends along the first direction and is disposed on the frame, and a power output shaft of the motor drives the rack to move along the first direction through the gear transmission mechanism; Wherein, the first direction is parallel to the axial direction of the rolling cleaning member.

2. The cleaning device according to claim 1, characterized in that The frame has a first position and a second position; wherein, in a plane projection perpendicular to the height direction of the cleaning device, the projection outline of the rolling cleaning member in the first position does not exceed the projection outline of the body assembly; a portion of the projection outline of the rolling cleaning member in the second position extends beyond the projection outline of the first side of the body assembly along the first direction.

3. The cleaning device according to claim 2, characterized in that: In a plane projection perpendicular to the height direction of the cleaning device, a portion of the projection profile of the rolling cleaning member in the second position exceeds the reference line or is flush with the reference line; The reference line is a moving track of an edge of the first side of the body component along the first direction when the cleaning device moves.

4. The cleaning device according to claim 1, characterized in that The gear transmission mechanism includes at least one transmission gear, the axis of the power output shaft of the motor is perpendicular to the first direction, and the axis of the transmission gear is parallel to the axis of the power output shaft.

5. The cleaning device according to claim 1, characterized in that: The rack is fixed to one side of the frame along a second direction, and the motor and the rack are located on the same side of the frame along the second direction, wherein the second direction is perpendicular to the first direction.

6. The cleaning device according to claim 1, characterized in that The body assembly comprises a bracket and a main body, the bracket is arranged on the main body, the cleaning assembly is arranged below the bracket, and the motor is installed on the main body.

7. The cleaning device according to claim 1, characterized in that The body assembly comprises a bracket and a main body, the bracket is detachably connected to the main body, the cleaning assembly is connected to the bracket and is located below the bracket, and the bracket and the cleaning assembly form a pre-assembled whole.

8. The cleaning device according to claim 7, characterized in that The bracket has a slide groove extending along the first direction, the top end of the frame is connected with a hanging part, the frame is hung on the slide groove through the hanging part, and the hanging part can slide along the slide groove.

9. The cleaning device according to claim 7, characterized in that: The bracket includes a plate body, a portion of the plate body protrudes upward and defines a first protrusion, the first protrusion extends along the first direction, and a groove is formed on the bottom side of the first protrusion, and a portion of the frame protrudes upward and defines a second protrusion, and the second protrusion extends into the groove.

10. The cleaning device according to claim 9, characterized in that The cleaning device includes at least one rolling element, which is rollably disposed in the groove and / or the second protrusion, and is at least partially located in the gap between the bottom side of the groove and the top side of the second protrusion along the height direction, so that the plate body and the frame are rollingly fitted through the rolling element.

11. The cleaning device according to claim 1, characterized in that The rack faces upward, and the gear transmission mechanism is located above the rack.

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