CN218165143U - Transmission mechanism, rolling brush assembly and cleaning device - Google Patents

Abstract

The application belongs to the technical field of robots, and particularly provides a transmission mechanism, a rolling brush assembly and a cleaning device, wherein the transmission mechanism is used for driving double rolling brushes to rotate, and comprises a rolling brush bin, and a double gear assembly, a driving assembly, a reversing assembly, a first output assembly and a second output assembly which are connected to the rolling brush bin; two gears in the double-gear assembly are in transmission connection with the output end of the driving assembly and the reversing assembly respectively; the first output assembly is in transmission connection with any one of the double gear assemblies; the second output assembly is in transmission connection with the reversing assembly; the first output assembly and the second output assembly are respectively used for being connected with two rolling brushes in the double rolling brushes. The transmission mechanism in the transmission mechanism can realize multi-stage gear transmission, and has the advantages of long service life of the gear, small axial occupied space and convenience in installation and maintenance; through setting up the switching-over subassembly, can realize that first output subassembly and second output subassembly rotate towards opposite direction, are favorable to the collection of rubbish, have improved clean effect.

Description

Transmission mechanism, rolling brush assembly and cleaning device

Technical Field

The application belongs to the technical field of cleaning devices, and particularly relates to a transmission mechanism, a rolling brush assembly and a cleaning device.

Background

The rolling brush is one of the important components of the cleaning robot, in the existing cleaning robot, the rolling brush is generally driven by a motor end connected with a reduction gearbox, the transmission part in the reduction gearbox is mainly belt transmission, and the belt transmission has many defects.

On the one hand, the belt is easy ageing, short service life for long-time use, and can produce the phenomenon of skidding and influence transmission efficiency, consequently, the belt needs often to be changed for cleaning machines people's repair maintenance cycle shortens, has increased the maintenance cost.

On the other hand, the reduction gearbox occupies a large axial space, is bulky in structure, and compresses the distribution space of other parts such as a rolling brush and the like, so that the compact and light design of the cleaning robot is not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a transmission mechanism, a rolling brush assembly and a cleaning device, so as to solve the technical problems of short service life, high maintenance cost, large occupied space, large structure and the like of the transmission mechanism in the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: providing a transmission mechanism for driving double rolling brushes to rotate, wherein the transmission mechanism comprises a rolling brush bin, a double-gear assembly, a driving assembly, a reversing assembly, a first output assembly and a second output assembly, and the double-gear assembly is rotationally connected to the rolling brush bin; the driving assembly is installed on the rolling brush bin, and the output end of the driving assembly is in transmission connection with one gear in the double-gear assembly; the reversing assembly is rotationally connected to the rolling brush bin and is in transmission connection with the other gear in the double-gear assembly; the first output assembly is rotatably connected to the rolling brush bin and is used for being connected with one rolling brush in the double rolling brushes; the first output assembly is in gear transmission connection with any one of the double gear assemblies; the second output assembly is rotatably connected to the rolling brush bin and is used for being connected with the other rolling brush in the double rolling brushes; the second output assembly is in transmission connection with the reversing assembly.

Optionally, the dual gear assembly comprises a dual gear shaft and a first dual gear having two gears; one end of the duplicate gear shaft is connected with the first duplicate gear, and the other end of the duplicate gear shaft is rotationally connected with the rolling brush bin.

Optionally, the drive assembly comprises a drive motor and a drive gear; the driving motor is arranged on the rolling brush cabin; a driving shaft of the driving motor is rotationally connected with the rolling brush bin and is connected with the driving gear; the driving gear is meshed with the first duplicate gear.

Optionally, the reversing assembly comprises a reversing gear and a reversing shaft; one end of the reversing shaft is connected with the reversing gear, and the other end of the reversing shaft is rotatably connected with the rolling brush bin; the reversing gear is meshed with the first duplicate gear.

Optionally, the first output assembly comprises a first output gear and a first output shaft; one end of the first output shaft is connected with the first output gear, and the other end of the first output shaft is used for penetrating through the rolling brush bin and being connected with one rolling brush in the double rolling brushes; the first output gear is meshed with the first duplicate gear.

Optionally, the second output assembly comprises a second output gear and a second output shaft; two ends of the second output shaft are connected with the second output gear, and the other two ends of the second output shaft are used for penetrating through the rolling brush cabin to be connected with the other rolling brush in the double rolling brushes; the second output gear is meshed with the reversing gear.

Optionally, the reversing gear is a second duplicate gear having two gears, a large gear of the second duplicate gear is engaged with a small gear of the first duplicate gear, and a small gear of the second duplicate gear is engaged with the second output gear.

The application still provides a round brush subassembly, including foretell drive mechanism, the round brush subassembly is still including setting up dust collection box, first round brush and the second round brush on the round brush storehouse side by side in proper order, first round brush with the second round brush is all rotated and is installed on the round brush storehouse.

Optionally, a baffle is arranged on the rolling brush bin, and the baffle is arranged between the first rolling brush and the second rolling brush.

The application also provides a cleaning device, which comprises the rolling brush component.

The application provides a drive mechanism, round brush subassembly and cleaning device's beneficial effect lies in: compared with the prior art, the transmission mechanism in the application can realize multi-stage gear transmission by adopting the double-gear component, and compared with a transmission belt transmission mode, the transmission mechanism has the advantages of high transmission precision, long service life, difficult replacement, shortened maintenance period and reduced maintenance cost; and gear drive can transmit bigger moment of torsion, and the axial occupation space is little, can satisfy compact, lightweight design, is favorable to the distribution of other parts in the round brush subassembly. Through setting up the switching-over subassembly, can realize that first output subassembly and second output subassembly rotate towards opposite direction, are favorable to the collection of rubbish, have improved clean effect.

Drawings

Fig. 1 is a front view schematic structural diagram (excluding a sealing cover) of a transmission mechanism provided in an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a transmission mechanism according to an embodiment of the present disclosure;

fig. 3 is a schematic perspective view of a transmission mechanism according to an embodiment of the present application;

fig. 4 is an exploded view of a transmission mechanism provided in an embodiment of the present application;

FIG. 5 is a schematic front view (excluding a sealing cover) of another embodiment of the transmission mechanism provided in the examples of the present application;

FIG. 6 is a partially exploded view of the device of FIG. 5;

FIG. 7 is a schematic perspective view of a rolling brush assembly according to an embodiment of the present disclosure;

FIG. 8 is a schematic cross-sectional view of a roll brush assembly according to an embodiment of the present disclosure;

FIG. 9 is a perspective view of a dust collecting box in the rolling brush assembly according to an embodiment of the present disclosure;

fig. 10 is a schematic perspective view illustrating a first rolling brush in a rolling brush assembly according to an embodiment of the present disclosure.

Wherein, in the figures, the various reference numbers:

1-rolling a brush bin; 101-a fixed plate; 102-a sealing cover;

a 2-dual gear assembly; 201-a first duplicate gear; 202-duplicate gear shafts; 203-double coupling retainer ring; 204-dual shaft bearings;

3-a drive assembly; 301-a drive motor; 311-a drive shaft; 302-a drive gear; 303-motor shaft sleeve;

4-a commutation component; 401-a reversing gear; 402-a reversing shaft; 403-reversing retainer ring; 404-a commutating bearing;

5-a first output assembly; 501-a first output gear; 502-a first output shaft; 503-a first output collar; 504-a first output bearing; 505 — a first connector;

6-a second output component; 601-a second output gear; 602-a second output shaft; 603-a second output collar; 604-a second output bearing; 605-a second connector;

7-a dust collection box;

8-a first roller brush;

9-a second roller brush;

10-a baffle plate;

11-road wheels.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 10 together, a transmission mechanism, a rolling brush assembly and a cleaning device according to an embodiment of the present disclosure will be described. The transmission mechanism is used for driving the double rolling brushes to rotate, as shown in fig. 1 to 6, the transmission mechanism comprises a rolling brush bin 1, a double-gear assembly 2, a driving assembly 3, a reversing assembly 4, a first output assembly 5 and a second output assembly 6, and the double-gear assembly 2 is rotatably connected to the rolling brush bin 1; the driving assembly 3 is arranged on the rolling brush bin 1, and the output end of the driving assembly 3 is in transmission connection with one gear in the double-gear assembly 2; the reversing assembly 4 is rotationally connected to the rolling brush bin 1, and the reversing assembly 4 is in transmission connection with the other gear in the double-gear assembly 2; the first output assembly 5 is rotationally connected to the rolling brush bin 1, and the first output assembly 5 is used for being connected with one rolling brush in the double rolling brushes; the first output assembly 5 is in gear transmission connection with any one of the double gear assemblies 2; the second output assembly 6 is rotationally connected to the rolling brush bin 1, and the second output assembly 6 is used for being connected with the other rolling brush in the double rolling brushes; the second output assembly 6 is in transmission connection with the reversing assembly 4.

Compared with the prior art, the transmission mechanism provided by the application can realize multi-stage gear transmission by adopting the double-gear component 2, has high transmission precision and long service life of gear transmission, is not easy to replace, shortens the maintenance period and reduces the maintenance cost compared with a transmission belt transmission mode; and gear drive can transmit bigger moment of torsion, and the axial occupation space is little, can satisfy compact, lightweight design, is favorable to the distribution of other parts in the round brush subassembly. Through setting up switching-over subassembly 4, can realize that first output subassembly 5 and second output subassembly 6 rotate towards opposite direction, be favorable to the collection of rubbish, improved clean effect.

In one embodiment of the present application, as shown in fig. 4, the roller brush magazine 1 includes a fixing plate 101 and a sealing cap 102, and the sealing cap 102 is connected to the fixing plate 101 such that a sealed space is formed between the sealing cap 102 and the fixing plate 101.

In one embodiment of the present application, referring to fig. 2-4 together, dual gear assembly 2 includes dual gear shaft 202 and first dual gear 201 having two gears; one end of the duplicate gear shaft 202 is connected with the first duplicate gear 201, the other end of the duplicate gear shaft 202 is rotatably connected with the fixed plate 101 of the roller brush bin 1, and the first duplicate gear 201 is located between the sealing cover 102 and the fixed plate 101 to form a closed space.

In this embodiment, as shown in fig. 2, the dual gear assembly 2 further includes two dual shaft retainers 203, two dual shaft retainers 203 may be provided, one dual shaft retainer 203 is connected to a joint between the dual gear shaft 202 and the fixing plate 101, and is used for axially positioning the dual gear shaft 202 and preventing the dual gear shaft 202 from moving axially along the dual gear shaft 202; another dual-coupling retainer 203 is connected to the joint of the dual-coupling gear shaft 202 and the first dual-coupling gear 201, and is used for axially positioning the first dual-coupling gear 201 and preventing the first dual-coupling gear 201 from moving along the axis thereof. The dual gear shaft 202 is provided with a D-shaped groove, which is connected to the D-shaped hole of the first dual gear 201 in an alignment manner, so as to circumferentially fix the first dual gear 201.

In this embodiment, as shown in fig. 2, the dual gear assembly 2 further includes a dual shaft bearing 204, an outer ring of the dual shaft bearing 204 is installed in a bearing hole of the fixing plate 101, an inner ring of the dual shaft bearing 204 is fixedly connected to the dual gear shaft 202, and by providing the dual shaft bearing 204, the rotational resistance of the dual gear shaft 202 can be reduced, and the smoothness of the rotation of the dual gear shaft 202 can be improved. Two double shaft bearings 204 may be provided to prevent the double gear shaft 202 from wobbling when it rotates.

In one embodiment of the present application, referring to fig. 2 and 4, the driving assembly 3 includes a driving motor 301 and a driving gear 302; the driving motor 301 is arranged on the rolling brush bin 1; a driving shaft 311 of the driving motor 301 is rotatably connected with the fixing plate 101 of the roller brush bin 1 and is connected with the driving gear 302; the drive gear 302 meshes with the first duplicate gear 201. The driving gear 302 is located in a closed space formed between the sealing cap 102 and the fixing plate 101.

In this embodiment, as shown in fig. 2, the driving assembly 3 further includes a motor shaft sleeve 303, the motor shaft sleeve 303 is sleeved on the driving shaft 311 of the driving motor 301 and is connected to the fixing plate 101 of the roller brush bin 1, the driving shaft 311 can be protected by the motor shaft sleeve 303, and the inner wall of the motor shaft sleeve 303 can be coated with lubricating oil to reduce wear of the driving shaft.

In one embodiment of the present application, referring to fig. 4, the reversing assembly 4 includes a reversing gear 401 and a reversing shaft 402; one end of a reversing shaft 402 is connected with a reversing gear 401, and the other end of the reversing shaft 402 is rotationally connected with a fixing plate 101 of the rolling brush bin 1; the reversing gear 401 meshes with the first duplicate gear 201. The reversing gear 401 and the first duplicate gear 201 are both positioned in a closed space formed between the sealing cover 102 and the fixed plate 101.

In this embodiment, as shown in fig. 4, the reversing assembly 4 further includes two reversing retainer rings 403, where one of the reversing retainer rings 403 is connected to a connection portion between the reversing shaft 402 and the fixing plate 101, and is used for axially positioning the reversing shaft 402 and preventing the reversing shaft 402 from moving along its axial direction; another reversing retainer 403 is attached to the junction of reversing shaft 402 and reversing gear 401 for axially locating reversing gear 401 and preventing reversing gear 401 from moving along its axis. A D-shaped groove is formed in the reversing shaft 402 and is connected with a D-shaped hole of the reversing gear 401 in an alignment mode, so that circumferential fixing of the reversing gear 401 is achieved.

In this embodiment, as shown in fig. 4, the reversing assembly 4 further includes a reversing bearing 404, an outer ring of the reversing bearing 404 is installed in a bearing hole of the fixing plate 101, an inner ring of the reversing bearing 404 is fixedly connected to the reversing shaft 402, and by arranging the reversing bearing 404, the resistance to rotation of the reversing shaft 402 can be reduced, and the smoothness of rotation of the reversing shaft 402 can be improved. The reversing bearing 404 may be provided in two to prevent yaw when the reversing shaft 402 rotates.

In one embodiment of the present application, referring to fig. 2 and 4 together, the first output assembly 5 includes a first output gear 501 and a first output shaft 502; one end of a first output shaft 502 is connected with the first output gear 501, and the other end of the first output shaft 502 is used for penetrating through the rolling brush bin 1 and connecting with one rolling brush in the double rolling brushes; the first output gear 501 meshes with the first duplicate gear 201. The first output gear 501 and the first duplicate gear 201 are both located in a sealed space formed between the sealing cover 102 and the fixing plate 101.

In this embodiment, as shown in fig. 2, the first output assembly 5 further includes two first output retainers 503, and two first output retainers 503 may be provided, where one first output retainer 503 is connected to a connection position of the first output shaft 502 and the fixing plate 101, and is used for positioning the first output shaft 502 in the axial direction and preventing the first output shaft 502 from moving along the axial direction; another first output retainer 503 is connected to the junction of the first output shaft 502 and the first output gear 501 for axially positioning the first output gear 501 to prevent the first output gear 501 from moving along its axis. The first output shaft 502 is provided with a D-shaped groove, and is connected with the D-shaped hole of the first output gear 501 in an alignment manner, so as to circumferentially fix the first output gear 501.

In this embodiment, as shown in fig. 2, the first output assembly 5 further includes a first output bearing 504, an outer ring of the first output bearing 504 is installed in a bearing hole of the fixing plate 101, and an inner ring of the first output bearing 504 is fixedly connected to the first output shaft 502, so that by providing the first output bearing 504, the resistance to rotation of the first output shaft 502 can be reduced, and the smoothness of rotation of the first output shaft 502 can be improved. The first output bearing 504 may be provided in two to prevent the first output shaft 502 from yawing while rotating.

In one embodiment of the present application, referring to fig. 4, the second output assembly 6 includes a second output gear 601 and a second output shaft 602; two ends of the second output shaft 602 are connected with the second output gear 601, and the other two ends of the second output shaft 602 are used for passing through the rolling brush bin 1 and being connected with the other rolling brush in the double rolling brushes; the second output gear 601 meshes with the reverse gear 401. The second output gear 601 and the reversing gear 401 are both located in a sealed space formed between the sealing cover 102 and the fixing plate 101.

The driving gear 302, the double gear assembly 2, the driving assembly 3, the reversing assembly 4, the first output assembly 5 and the second output assembly 6 are arranged in a closed space formed between the sealing cover 102 and the fixed plate 101.

In this embodiment, as shown in fig. 4, the second output assembly 6 further includes two second output retainers 603, and two of the second output retainers 603 may be provided, where one of the second output retainers 603 is connected to a joint of the second output shaft 602 and the fixing plate 101, and is used for positioning the second output shaft 602 in the axial direction and preventing the second output shaft 602 from moving in the axial direction; another second output retainer 603 is connected to the joint of the second output shaft 602 and the second output gear 601, and is used for positioning the second output gear 601 in the axial direction and preventing the second output gear 601 from moving along the axis thereof. The second output shaft 602 is provided with a D-shaped groove, and is connected with the D-shaped hole of the second output gear 601 in an alignment manner, so as to realize circumferential fixation of the second output gear 601.

In this embodiment, as shown in fig. 4, the second output assembly 6 further includes a second output bearing 604, an outer ring of the second output bearing 604 is installed in the bearing hole of the fixing plate 101, an inner ring of the second output bearing 604 is fixedly connected to the second output shaft 602, and by providing the second output bearing 604, the resistance to rotation of the second output shaft 602 can be reduced, and the smoothness of rotation of the second output shaft 602 can be improved. The second output bearing 604 may be provided in two to prevent the second output shaft 602 from yawing when rotating.

In one embodiment of the present application, as shown in fig. 1-4, the reversing gear 401 is a common single piece gear. In another embodiment of the present application, referring to fig. 5 to 6 together, the reversing gear 401 is a second duplicate gear having two gears, a large gear of the second duplicate gear is engaged with a small gear of the first duplicate gear 201, and a small gear of the second duplicate gear is engaged with the second output gear 601.

In an embodiment of the application, a sealed space is formed between the sealing cover 102 and the fixing plate 101, the first duplicate gear 201, the driving gear 302, the reversing gear 401, the first output gear 501 and the second output gear 601 are all located in the sealed space, through the arrangement of the sealing cover 102, impurities such as dust can be prevented from entering the sealed space, normal meshing between the gears can be ensured, lubricating oil can be coated on each gear, and smoothness of gear transmission is improved.

Referring to fig. 7 to 10, the present application further provides a rolling brush assembly, which includes the above-mentioned transmission mechanism, and the rolling brush assembly further includes a dust collecting box 7, a first rolling brush 8 and a second rolling brush 9, which are sequentially arranged on the rolling brush chamber 1 in parallel; the first rolling brush 8 is connected with the first output assembly 5, and the second rolling brush 9 is connected with the second output assembly 6. The dust collection box 7 is used for collecting the garbage cleaned by the first rolling brush 8 and the second rolling brush 9, the dust collection box 7, the first rolling brush 8 and the second rolling brush 9 are sequentially arranged in parallel, the flow path of the garbage such as dust is optimized, and the working efficiency of the rolling brush assembly is improved.

In one embodiment of the present application, a baffle 10 is further disposed on the roller brush cabin, and the baffle 10 is disposed between the first roller brush 8 and the second roller brush 9. As shown in fig. 8, the arrow indicates the flowing direction of the garbage such as dust, the first rolling brush 8 rotates clockwise, and the garbage swept up by the first rolling brush 8 can enter the dust collecting box 7; the second rolling brush 9 rotates counterclockwise, and the garbage swept by the second rolling brush 9 firstly passes through the area of the first rolling brush 8 and then enters the dust collection box 7. By providing the baffle 10 between the first rolling brush 8 and the second rolling brush 9, the garbage swept up by the first rolling brush 8 can be prevented from being caught in the area of the second rolling brush 9, thereby improving the cleaning efficiency.

In one embodiment of the present application, the roller brush assembly further comprises a first connector 505 and a second connector 605, the first connector 505 is mounted on the first output shaft 502, and the first roller brush 8 is detachably connected to the first connector 505; the second connector 605 is mounted on the second output shaft 602, and the second round brush 9 is detachably connected to the second connector 605. By providing the first and second connectors 505 and 605, the removal and replacement of the first and second roll brushes 8 and 9 are facilitated.

In one embodiment of the present application, referring to fig. 7 and 8 together, the rolling brush bin cover is disposed on the dust collecting box 7, the first rolling brush 8 and the second rolling brush 9, and the driving motor is mounted on the outer top wall of the rolling brush bin 1. The driving gear 302, the double-gear assembly 2, the driving assembly 3, the reversing assembly 4, the first output assembly 5 and the second output assembly 6 are all arranged on the outer side wall of the rolling brush cabin 1; the dust collecting box 7 can be detachably connected with the rolling brush bin, so that garbage in the dust collecting box 7 can be conveniently cleaned, and the first rolling brush 8 and the second rolling brush 9 can be detachably connected with the rolling brush bin, and the first rolling brush 8 and the | or the second rolling brush 9 can be conveniently replaced.

The application also provides a cleaning device, which comprises the rolling brush component. Cleaning device can also include walking wheel 11, as shown in fig. 7, walking wheel 11 installs on the round brush storehouse of clean mechanism, through setting up walking wheel 11, can support the round brush storehouse, and walking wheel 11 can be the universal wheel.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A transmission mechanism for driving a double roller brush to rotate, the transmission mechanism comprising:

a rolling brush cabin;

the double-gear assembly is rotationally connected to the rolling brush bin;

the driving assembly is installed on the rolling brush bin, and the output end of the driving assembly is in transmission connection with one gear of the double-gear assembly;

the reversing assembly is rotationally connected to the rolling brush bin and is in transmission connection with the other gear in the double-gear assembly;

a first output assembly; the first output assembly is rotatably connected to the rolling brush bin and is used for being connected with one rolling brush in the double rolling brushes; the first output assembly is in gear transmission connection with any one of the double gear assemblies; and

a second output assembly; the second output assembly is rotatably connected to the rolling brush bin and is used for being connected with the other rolling brush in the double rolling brushes; the second output assembly is in transmission connection with the reversing assembly.

2. A transmission as claimed in claim 1 wherein the dual gear assembly comprises a dual gear shaft and a first dual gear having two gears; one end of the duplicate gear shaft is connected with the first duplicate gear, and the other end of the duplicate gear shaft is rotatably connected with the rolling brush bin.

3. A transmission mechanism as claimed in claim 2, wherein the drive assembly comprises a drive motor and a drive gear; the driving motor is arranged on the rolling brush cabin; a driving shaft of the driving motor is rotationally connected with the rolling brush bin and is connected with the driving gear; the driving gear is meshed with the first duplicate gear.

4. A drive mechanism as claimed in claim 2, wherein the reversing assembly comprises a reversing gear and a reversing shaft; one end of the reversing shaft is connected with the reversing gear, and the other end of the reversing shaft is rotationally connected with the rolling brush bin; the reversing gear is meshed with the first duplicate gear.

5. A transmission mechanism according to claim 4, wherein the first output assembly comprises a first output gear and a first output shaft; one end of the first output shaft is connected with the first output gear, and the other end of the first output shaft is used for penetrating through the rolling brush bin and being connected with one rolling brush in the double rolling brushes; the first output gear is meshed with the first duplicate gear.

6. A transmission mechanism as claimed in claim 4, wherein the second output assembly comprises a second output gear and a second output shaft; two ends of the second output shaft are connected with the second output gear, and the other two ends of the second output shaft are used for penetrating through the rolling brush cabin to be connected with the other rolling brush in the double rolling brushes; the second output gear is meshed with the reversing gear.

7. A drive mechanism according to claim 6, wherein the reversing gear is a second duplicate gear having two gears, a large gear of the second duplicate gear being in mesh with a small gear of the first duplicate gear, and a small gear of the second duplicate gear being in mesh with the second output gear.

8. A roller brush assembly comprising the transmission mechanism according to any one of claims 1 to 7, wherein the roller brush assembly further comprises a dust collection box, a first roller brush and a second roller brush which are arranged side by side in sequence and are mounted on the roller brush chamber, and the first roller brush and the second roller brush are rotatably mounted on the roller brush chamber.

9. The roller brush assembly of claim 8, wherein a baffle is further disposed on the roller brush cartridge, the baffle being disposed between the first roller brush and the second roller brush.

10. A cleaning device, characterized in that it comprises a roller brush assembly according to claim 8 or 9.

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