Brush disc device and scrubber

Abstract

The invention discloses a brush disc device and a scrubber, and relates to the technical field of cleaning electric appliances. A brush disc is arranged on the lower side of the brush disc frame; the two ends of the linkage connecting rod are connected with a linkage connecting rod first rotating shaft and a linkage connecting rod second rotating shaft respectively; the two ends of the lifting arm are connected with a lifting rotating shaft and a torsion rotating shaft respectively, a torsion rotating plate is fixedly connected to the outer side wall of the torsion rotating shaft, a first buffer spring is arranged between the upper side of the torsion rotating plate and the lower side of the lifting arm, and a second buffer spring is arranged between the lower side of the torsion rotating plate and the lower side of the brush disc frame; when the brush disc frame needs to be controlled to ascend, the first buffer spring exerts spring thrust between the torsion rotating plate and the lifting arm to play a supporting role, the second buffer spring is matched with the linkage connecting rod to play a buffering and stability maintaining role on the brush disc frame, and cleaning work can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning appliances, and particularly to a brush disk device and a floor washer. Background Art

[0002] The brush disk performs cleaning work by rotating, and has a good cleaning effect. Therefore, the brush disk can be used as an important cleaning component of various cleaning devices (such as floor washing vehicles). The existing brush disks of floor washing vehicles usually use a motor and a connecting rod to control the lifting movement. It is found in practice that the stability of this brush disk lifting movement is insufficient, and precise lifting adjustment cannot be performed. The area of contact cleaning coverage during the cleaning of the brush disk is unstable, directly affecting the cleaning effect. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a brush disk device and a floor washer.

[0004] The brush disk device according to the first aspect embodiment of the present invention includes: a chassis; a brush disk frame located below the chassis, with a brush disk provided on the lower side of the brush disk frame; a linkage connecting rod, with a first linkage rotating shaft and a second linkage rotating shaft respectively connected to both ends of the linkage connecting rod. The first linkage rotating shaft is connected to the upper side of the brush disk frame, and the second linkage rotating shaft is connected to the lower side of the chassis; a lifting arm, with a lifting rotating shaft and a torsion rotating shaft respectively connected to both ends of the lifting arm. The lifting rotating shaft is connected to the upper side of the brush disk frame, the torsion rotating shaft is connected to the lower side of the chassis, a torsion rotating plate is fixedly connected to the outer side wall of the torsion rotating shaft, a first buffer spring is provided between the upper side of the torsion rotating plate and the lower side of the lifting arm, and a second buffer spring is provided between the lower side of the torsion rotating plate and the lower side of the brush disk frame; a lifting driving device for driving the torsion rotating shaft to rotate.

[0005] According to some embodiments of the present invention, rear linkage ears are provided on the left and right sides of the upper side of the brush disk frame, the first linkage rotating shaft is connected to the rear linkage ears, front linkage ears are provided on the left and right sides of the lower side of the chassis, and the second linkage rotating shaft is connected to the front linkage ears.

[0006] According to some embodiments of the present invention, a rear brush disk frame hanger is provided on the rear side of the upper side of the brush disk frame, the lifting rotating shaft is connected to the rear brush disk frame hanger, a front brush disk frame hanger is provided on the front side of the lower side of the chassis, and the torsion rotating shaft is connected to the front brush disk frame hanger.

[0007] According to some embodiments of the present invention, a shock absorber is further provided between the upper side of the torsion rotating plate and the lower side of the lifting arm.

[0008] According to some embodiments of the present invention, a lifting arm pressing plate is provided on the lower side of the lifting arm, and the lifting arm pressing plate abuts against the upper side of the first buffer spring and the upper side of the shock absorber.

[0009] According to some embodiments of the present invention, a proximity plate is provided on the upper side of the lifting arm, and a proximity switch is provided on the proximity plate, and the proximity switch can abut against the lower side of the chassis.

[0010] According to some embodiments of the present invention, the lifting drive device adopts an electric piston device. The lifting drive device includes a piston cylinder at the front side and a push rod at the rear side. A front push rod hanger is provided on the front side of the lower side of the chassis. The front end of the piston cylinder is connected to the front push rod hanger through a rotating shaft. A torsion swing arm is fixedly connected to the torsion rotating shaft. The rear end of the push rod is connected to the torsion swing arm through a rotating shaft.

[0011] The scrubbing brush device according to the embodiments of the present invention has at least the following technical effects: When it is necessary to control the scrubbing brush frame to rise, the torsion rotating shaft drives the torsion rotating plate to rise. The first buffer spring exerts a spring thrust between the torsion rotating plate and the lifting arm to play a supporting role. When the scrubbing brush frame is lifted and rises, the second buffer spring and the linkage rod cooperate to play a buffering and stabilizing role for the scrubbing brush frame. When it is necessary to control the scrubbing brush frame to descend, the torsion rotating shaft drives the torsion rotating plate to descend. When the scrubbing brush frame is lifted and descends, the first buffer spring plays a supporting role, and the second buffer spring no longer generates a spring thrust effect with the scrubbing brush frame, making the stability of the scrubbing brush lifting adjustment extremely high, avoiding shaking and deviation, and ensuring the progress of the cleaning work; it can better cooperate with the controller to adjust the height of the scrubbing brush, accurately control the pressure of the scrubbing brush on the ground, making the cleaning effect more obvious, and at the same time protecting the ground; the linkage rods are arranged on the left and right sides respectively to ensure that the scrubbing brush frame and the scrubbing brush will not tilt left and right or back and forth during the rising and falling processes, and keep the lifting accurate and stable enough; the shock absorber can filter the pressure of the ground, reduce the vibration of the work, and reduce the pressure on the frequent change of the lifting drive device. The floor washer according to the second aspect embodiment of the present invention includes the scrubbing brush device according to the first aspect embodiment of the present invention above.

[0012] According to some embodiments of the present invention, a water baffle is provided at the edge position of the scrubbing brush frame, and a water blocking piece is provided on the lower side of the water baffle.

[0013] According to some embodiments of the present invention, a water distribution valve is provided on the upper side of the scrubbing brush frame. The water distribution valve has a main water inlet and a water distribution port. The main water inlet is externally connected to a water source, the water distribution port is connected to a water spray pipe, and a water spray nozzle is provided on the output side of the water spray pipe, and the water spray nozzle faces the scrubbing brush.

[0014] The floor washer according to the embodiment of the present invention has at least the following beneficial effects: When the floor washer needs to control the brush disk holder to rise, the torsion rotating shaft drives the torsion rotating plate to rise. The first buffer spring applies a spring thrust between the torsion rotating plate and the lifting arm to play a supporting role. When the brush disk holder is lifted and rises, the second buffer spring and the linkage rod cooperate to play a buffering and stabilizing role for the brush disk holder. When it is necessary to control the brush disk holder to descend, the torsion rotating shaft drives the torsion rotating plate to descend. When the brush disk holder is lifted and descends, the first buffer spring plays a supporting role, and the second buffer spring no longer generates a spring thrust effect on the brush disk holder, making the stability of the brush disk lifting adjustment extremely high, avoiding shaking and deviation, and ensuring the operation of the floor washer.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a perspective view of the brush disk device and the floor washer of the present invention; Figure 2 is a cross-sectional view of the brush disk device and the floor washer of the present invention; Figure 3 is a cross-sectional view of the brush disk device and the floor washer of the present invention from another angle; Figure 4 is a working schematic diagram of the brush disk device of the present invention; Figure 5 is a perspective view of the lifting arm in the present invention; Figure 6 is an exploded view of the structure of the lifting arm and the brush disk holder in the present invention; Figure 7 is a working schematic diagram of the lifting drive device in the present invention.

[0016] REFERENCE MARKS: Chassis 100, front connecting rod ear 110, front brush disc holder hanger 120, front push rod hanger 130; brush disc holder 200, brush disc 210, brush disc motor 211, rear connecting rod ear 220, rear brush disc holder hanger 230, water baffle 240, water retaining piece 241, water distribution valve 250, main water inlet 251, water distribution port 252, water spray pipe 253, water spray nozzle 254; linkage connecting rod 300, first rotating shaft of linkage connecting rod 310, second rotating shaft of linkage connecting rod 320; lifting arm 400, lifting rotating shaft 410, torsion rotating shaft 420, torsion rotating plate 421, torsion swing arm 422, first torsion bearing 423, second torsion bearing 424, non-circular end of torsion rotating shaft 425, non-circular hole of torsion swing arm 426, first buffer spring 430, second buffer spring 440, shock absorber 450, lifting arm pressing plate 460, approaching plate 470, proximity switch 471; lifting drive device 500, piston cylinder 510, push rod 520. Detailed implementation manners

[0017] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0018] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, rear, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0019] In the description of the present invention, the meaning of "plurality" is more than two, and understandings such as greater than, less than, exceeding, etc. do not include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0020] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0021] The following reference Figure 1 and Figure 2 describes a brush disc device according to an embodiment of the present invention.

[0022] As Figure 1 and Figure 2As shown in the figure, the brush disc device according to an embodiment of the present invention includes a chassis 100, a brush disc holder 200, a linkage rod 300, a lifting arm 400, and a lifting drive device 500.

[0023] The chassis 100; the brush disc holder 200 is located below the chassis 100, and a brush disc 210 is provided on the lower side of the brush disc holder 200; referring to Figure 2 , Figure 3 , both ends of the linkage rod 300 are respectively connected with a first linkage rod rotating shaft 310 and a second linkage rod rotating shaft 320. The first linkage rod rotating shaft 310 is connected to the upper side of the brush disc holder 200, and the second linkage rod rotating shaft 320 is connected to the lower side of the chassis 100; both ends of the lifting arm 400 are respectively connected with a lifting rotating shaft 410 and a torsion rotating shaft 420. The lifting rotating shaft 410 is connected to the upper side of the brush disc holder 200, and the torsion rotating shaft 420 is connected to the lower side of the chassis 100. A torsion plate 421 is fixedly connected to the outer side wall of the torsion rotating shaft 420. A first buffer spring 430 is provided between the upper side of the torsion plate 421 and the lower side of the lifting arm 400, and a second buffer spring 440 is provided between the lower side of the torsion plate 421 and the lower side of the brush disc holder 200; the lifting drive device 500 is used for driving the torsion rotating shaft 420 to rotate.

[0024] For example, as Figure 1 and Figure 2 shown, the chassis 100 serves as the main structure of the cleaning device. The brush disc holder 200 is located below the chassis 100, and a brush disc 210 is provided on the lower side of the brush disc holder 200. The lifting and lowering movement of the brush disc holder 200 is controlled by the lifting drive device, thereby driving the lifting and lowering movement of the brush disc 210. Referring to Figure 2 , Figure 3 , both ends of the linkage rod 300 are respectively connected with a first linkage rod rotating shaft 310 and a second linkage rod rotating shaft 320. The first linkage rod rotating shaft 310 is connected to the upper side of the brush disc holder 200, and the second linkage rod rotating shaft 320 is connected to the lower side of the chassis 100, driving the interlocking of the brush disc holder 200 and the chassis 100. Both ends of the lifting arm 400 are respectively connected with a lifting rotating shaft 410 and a torsion rotating shaft 420. The lifting rotating shaft 410 is connected to the upper side of the brush disc holder 200, and the torsion rotating shaft 420 is connected to the lower side of the chassis 100, driving the interlocking of the brush disc holder 200 and the chassis 100. A torsion plate 421 is fixedly connected to the outer side wall of the torsion rotating shaft 420. A first buffer spring 430 is provided between the upper side of the torsion plate 421 and the lower side of the lifting arm 400, providing a buffer force between the torsion plate 421 and the lifting arm 400. A second buffer spring 440 is provided between the lower side of the torsion plate 421 and the lower side of the brush disc holder 200, providing a buffer force between the torsion plate 421 and the brush disc holder 200. The lifting drive device 500 is used for driving the torsion rotating shaft 420 to rotate. The lifting and lowering movement of the brush disc holder 200 is controlled by the lifting drive device 500, thereby driving the lifting and lowering movement of the brush disc 210.

[0025] In actual operation, for example, when cleaning the floor, the brush tray frame 200 is controlled to lift and lower through the lifting drive device 500. When the brush tray frame 200 is lifted, the brush tray 210 is out of contact with the floor. When the brush tray frame 200 is lowered, the brush tray 210 is in contact with the floor for cleaning. The height of the lowered brush tray frame 200 affects the contact pressure between the brush tray 210 and the floor, which is equivalent to adjusting the pressing force for cleaning.

[0026] Reference Figure 4 During the lifting and lowering of the brush rack 200, the torsion shaft 420 cooperates with the rotation, and the first buffer spring 430 plays a role in moving and limiting the lifting arm 400 and the second buffer spring 440 plays a role in moving and limiting the brush rack 200: When the brush rack 200 needs to be controlled to rise, the torsion shaft 420 drives the torsion plate 421 to rise, and the first buffer spring 430 applies spring thrust between the torsion plate 421 and the lifting arm 400 to play a supporting role. When the brush rack 200 is lifted up, the second buffer spring 440 cooperates with the linkage rod 300 to play a buffering and stabilizing role for the brush rack 200. When the brush rack 200 needs to be controlled to descend, the torsion shaft 420 drives the torsion rotating plate 421 to descend. When the brush rack 200 is lifted and lowered, the first buffer spring 430 plays a supporting role, and the second buffer spring 440 no longer generates a spring thrust with the brush rack 200.

[0027] Moreover, during the cleaning process, the unevenness of the ground will cause the pressure of the brush plate 210 to fluctuate, thus affecting the cleaning effect of the brush plate 210. Therefore, during the cleaning process, it is necessary to make corresponding fine adjustments to the brush plate frame 200. The first buffer spring 430 also plays a role in coordinating fine adjustments for the lifting arm 400, and the second buffer spring 440 also plays a role in coordinating fine adjustments for the brush plate frame 200. When the ground is convex, the brush plate frame 200 is finely adjusted to rise, and the first buffer spring 430 plays a supporting role, while the second buffer spring 440 and the linkage connecting rod 300 play a stabilizing role for the brush plate. When the ground is concave, the brush plate frame 200 is finely adjusted to descend, and the first buffer spring 430 plays a supporting role, and the second buffer spring 440 no longer generates a spring thrust with the brush plate frame 200.

[0028] The linkage link 300 plays a stabilizing role in the above process, keeping the entire brush plate frame 200 and the brush plate 210 from shifting during the rising and falling process, and ensuring that a predetermined angle is maintained between the brush plate and the predetermined travel direction of the cleaning device, which can disperse the forward resistance and reduce the bouncing of the brush plate 210.

[0029] In some embodiments of the present invention, a brush plate motor 211 is disposed on the brush plate frame 200, and the brush plate motor 211 is used to drive the brush plate 210 to rotate to perform cleaning work.

[0030] In some embodiments of the present invention, the brush disc device of the present invention embodiment has a controller to drive the lifting drive device 500. During the cleaning device's travel, the unevenness of the ground will cause fluctuations in the pressure of the brush disc against the ground, thus affecting the floor cleaning effect of the brush disc. Therefore, during the travel, the controller will refresh the current signal feedback by the brush disc motor in real time to adjust the height of the brush disc. When the pressure becomes smaller, a signal will be sent to the lifting drive device 500 to make it descend to ensure the downward pressure of the brush disc cleaning. When the pressure becomes larger, a signal will be sent to the lifting drive device 500 to make it ascend to reduce the downward pressure during the brush disc cleaning, so that the current value of the brush disc motor returns to the normal set value.

[0031] In some embodiments of the present invention, referring to Figure 3 , Figure 6 , on the left and right sides of the upper side of the brush disc holder 200, there are rear connecting rod ears 220. The first rotating shaft 310 of the linkage connecting rod is connected to the rear connecting rod ear 220. On the left and right sides of the lower side of the chassis 100, there are front connecting rod ears 110. The second rotating shaft 320 of the linkage connecting rod is connected to the front connecting rod ear 110. In this way, the linkage connecting rod 300 is installed on the left and right sides respectively. The above design can ensure that the brush disc holder 200 and the brush disc 210 will not tilt left and right or front and back during the ascending and descending processes, and keep the lifting accurate and stable enough.

[0032] In some embodiments of the present invention, on the rear side of the upper side of the brush disc holder 200, there is a rear brush disc holder hanging bracket 230. The lifting rotating shaft 410 is connected to the rear brush disc holder hanging bracket 230. On the front side of the lower side of the chassis 100, there is a front brush disc holder hanging bracket 120. The torsion rotating shaft 420 is connected to the front brush disc holder hanging bracket 120, ensuring that when the lifting arm 400 drives the brush disc holder 200 to lift and lower, the lifting process of the brush disc holder 200 is stable enough.

[0033] In some embodiments of the present invention, between the torsion rotating shaft 420 and the front brush disc holder hanging bracket 120, they are connected through a first torsion bearing 423.

[0034] In some embodiments of the present invention, between the torsion rotating shaft 420 and the front end of the lifting arm 400, they are connected through a second torsion bearing 424.

[0035] In some embodiments of the present invention, between the upper side of the torsion rotating plate 421 and the lower side of the lifting arm 400, there is also a shock absorber 450. The shock absorber 450 is used to filter the pressure of the ground, reduce the working vibration, and reduce the frequently changing pressure on the lifting drive device 500.

[0036] In some embodiments of the present invention, referring to Figure 5, a lifting arm pressing plate 460 is provided on the lower side of the lifting arm 400. The lifting arm pressing plate 460 presses against the upper sides of the first buffer spring 430 and the shock absorber 450, enabling the lifting arm 400 to be designed at a more reasonable angle to press against the upper sides of the first buffer spring 430 and the shock absorber 450, thereby improving the buffer and shock absorption effects of the first buffer spring 430 and the shock absorber 450.

[0037] In some embodiments of the present invention, a proximity plate 470 is provided on the upper side of the lifting arm 400, and a proximity switch 471 is provided on the proximity plate 470. The proximity switch 471 can press against the lower side of the chassis 100. That is, the proximity switch 471 is connected to the lifting arm 400. When the lifting arm 400 rises to a predetermined height, the proximity switch 471 will press against the chassis 100 and send a control signal to control the lifting arm 400 to stop rising.

[0038] In some embodiments of the present invention, referring to Figure 7 , the lifting drive device 500 of the scrubbing brush device of the present invention adopts an electric piston device, and the lifting drive device 500 controls the lifting movement of the scrubbing brush frame 200 as a lifting drive device. The lifting drive device 500 includes a piston cylinder 510 at the front side and a push rod 520 at the rear side, and the piston cylinder 510 and the push rod 520 can perform telescopic movements. A front push rod hanger 130 is provided on the lower side of the front side of the chassis 100. The front end of the piston cylinder 510 is connected to the front push rod hanger 130 through a rotating shaft. A torsion swing arm 422 is fixedly connected to the torsion rotating shaft 420, and the rear end of the push rod 520 is connected to the torsion swing arm 422 through a rotating shaft. In this way, when the push rod 520 performs telescopic movement, it can drive the torsion swing arm 422 to rotate, and then drive the torsion rotating shaft 420 to rotate through the torsion swing arm 422. This method can provide a large enough and stable enough torque for the torsion rotating shaft 420 to drive the lifting movement of the scrubbing brush frame 200.

[0039] In some embodiments of the present invention, when the scrubbing brush 210 is lowered to the maximum pressure on the ground, the angle between the swing arm of the torsion rotating shaft 420 and the electric piston device is about 90°. At this time, the output torque of the electric piston device is the largest, which can better utilize the force of the electric piston device and also play a protective role.

[0040] In some embodiments of the present invention, referring to Figure 5 , Figure 6 , the end of the torsion rotating shaft 420 has a non-circular end 425 of the torsion rotating shaft, and the torsion swing arm 422 has a non-circular hole 426 of the torsion swing arm. The non-circular end 425 of the torsion rotating shaft is inserted into the non-circular hole 426 of the torsion swing arm to ensure that the torsion swing arm 422 can drive the torsion rotating shaft 420 to rotate smoothly.

[0041] The floor washer according to the second aspect embodiment of the present invention includes the scrubbing brush device according to the first aspect embodiment of the present invention above.

[0042] The floor washer according to the embodiment of the present invention improves the working stability of the floor washer and enhances the user experience by adopting the above brush disc device.

[0043] In some embodiments of the present invention, a water baffle 240 is provided at the edge position of the brush disc holder 200, and a water blocking piece 241 is provided on the lower side of the water baffle 240. The water blocking piece 241 can ensure that water does not splash everywhere when the brush disc 210 rotates during operation of the floor washer of the present invention.

[0044] In some embodiments of the present invention, a water distribution valve 250 is provided on the upper side of the brush disc holder 200. The water distribution valve 250 has a main water inlet 251 and a water distribution port 252. The main water inlet 251 is externally connected to a water source, and a water spray pipe 253 is connected to the water distribution port 252. A water spray nozzle 254 is provided on the output side of the water spray pipe 253, and the water spray nozzle 254 faces the brush disc 210. After water is injected into the main water inlet 251, it is split through the water distribution port 252 to each water spray nozzle 254 to supply water to the corresponding brush disc 210, cooperating with the cleaning work of the brush disc 210.

[0045] The wall and window cleaning machine according to the third aspect embodiment of the present invention includes the brush disc device according to the first aspect embodiment of the present invention above.

[0046] The other configurations and operations of different cleaning devices according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0047] Next, refer to Figure 1 and Figure 2 A specific embodiment is used to describe in detail the brush disc device according to the embodiment of the present invention. It should be understood that the following description is only an exemplary illustration and not a specific limitation of the invention.

[0048] As Figure 1 and Figure 2 shown, the brush disc device according to the embodiment of the present invention includes a chassis 100, a brush disc holder 200, a linkage connecting rod 300, a lifting arm 400, and a lifting drive device 500.

[0049] The chassis 100 is provided with a front connecting rod ear 110, a front brush disc holder hanging bracket 120, and a front push rod hanging ear 130.

[0050] The brush disc holder 200 is provided with a brush disc 210, a brush disc motor 211, a rear connecting rod ear 220, a rear brush disc holder hanging bracket 230, a water baffle 240, a water blocking piece 241, a water distribution valve 250, a main water inlet 251, a water distribution port 252, a water spray pipe 253, and a water spray nozzle 254.

[0051] The linkage connecting rod 300 is provided with a linkage connecting rod first rotating shaft 310 and a linkage connecting rod second rotating shaft 320.

[0052] The lifting arm 400 includes a lifting rotating shaft 410, a torsion rotating shaft 420, a torsion rotating plate 421, a torsion rocker arm 422, a first torsion bearing 423, a second torsion bearing 424, a non-circular end of the torsion rotating shaft 425, a non-circular hole of the torsion rocker arm 426, a first buffer spring 430, a second buffer spring 440, a shock absorber 450, a lifting arm pressing plate 460, a proximity plate 470, and a proximity switch 471.

[0053] The lifting drive device 500 includes a piston cylinder 510 and a push rod 520. The lifting drive device 500 is connected to the torsion rocker arm 422 on the torsion rotating shaft 420.

[0054] For the brush disk device according to the embodiment of the present invention, by such setting, at least the following effects can be achieved. When it is necessary to control the brush disk holder 200 to rise, the torsion rotating shaft 420 drives the torsion rotating plate 421 to rise. The first buffer spring 430 exerts a spring thrust between the torsion rotating plate 421 and the lifting arm 400 to play a supporting role. When the brush disk holder 200 is driven to rise, the second buffer spring 440 and the linkage link 300 cooperate to play a buffering and stabilizing role for the brush disk holder 200. When it is necessary to control the brush disk holder 200 to descend, the torsion rotating shaft 420 drives the torsion rotating plate 421 to descend. When the brush disk holder 200 is driven to descend, the first buffer spring 430 plays a supporting role, and the second buffer spring 440 no longer generates a spring thrust effect with the brush disk holder 200, making the lifting adjustment of the brush disk 210 extremely stable, avoiding shaking and deviation, and ensuring the cleaning work can be carried out. It can better cooperate with the controller to adjust the height of the brush disk 210, accurately control the pressure of the brush disk 210 on the ground, making the cleaning effect more obvious, and at the same time protecting the ground. It protects the normal operation of each component of the cleaning device, extends the service life of the workpiece, filters the vibration of the ground, reduces the damage to other components, and also ensures a better user experience.

[0055] In the description of this specification, the description with reference to terms such as "some embodiments" or "it is conceivable that" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0056] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A brushing device, characterized in that: include: chassis(100); A brush plate frame (200) is located below the chassis (100), and a brush plate (210) is provided on the lower side of the brush plate frame (200); A linkage connecting rod (300), wherein two ends of the linkage connecting rod (300) are respectively connected to a linkage connecting rod first rotating shaft (310) and a linkage connecting rod second rotating shaft (320), the linkage connecting rod first rotating shaft (310) is connected to the upper side of the brush plate frame (200), and the linkage connecting rod second rotating shaft (320) is connected to the lower side of the chassis (100); A lifting arm (400), wherein two ends of the lifting arm (400) are respectively connected to a lifting shaft (410) and a torsion shaft (420), the lifting shaft (410) is connected to the upper side of the brush disc frame (200), the torsion shaft (420) is connected to the lower side of the chassis (100), a torsion rotating plate (421) is fixedly connected to the outer side wall of the torsion rotating plate (420), a first buffer spring (430) is provided between the upper side of the torsion rotating plate (421) and the lower side of the lifting arm (400), and a second buffer spring (440) is provided between the lower side of the torsion rotating plate (421) and the lower side of the brush disc frame (200); The lifting drive device (500) is used to drive the torque shaft (420) to rotate.

2. The brush device according to claim 1, characterized in that: Rear connecting rod ears (220) are provided on the left and right sides of the upper side of the brush plate frame (200), and the first rotating shaft (310) of the linkage connecting rod is connected to the rear connecting rod ears (220). Front connecting rod ears (110) are provided on the left and right sides of the lower side of the chassis (100), and the second rotating shaft (320) of the linkage connecting rod is connected to the front connecting rod ears (110).

3. The brush device according to claim 1, characterized in that: A rear brush rack hanger (230) is provided on the rear side of the upper side of the brush rack (200), the lifting shaft (410) is connected to the rear brush rack hanger (230), a front brush rack hanger (120) is provided on the front side of the lower side of the chassis (100), and the torque shaft (420) is connected to the front brush rack hanger (120).

4. The brush device according to claim 1, characterized in that: A shock absorber (450) is also provided between the upper side of the torsion plate (421) and the lower side of the lifting arm (400).

5. The brush device according to claim 4, characterized in that: A lifting arm pressure plate (460) is provided at the lower side of the lifting arm (400), and the lifting arm pressure plate (460) presses against the upper side of the first buffer spring (430) and the upper side of the shock absorber (450).

6. The brush device according to claim 1, characterized in that: An approach plate (470) is provided on the upper side of the lifting arm (400), and a proximity switch (471) is provided on the approach plate (470), and the proximity switch (471) is capable of supporting the lower side of the chassis (100).

7. The brush device according to claim 1, characterized in that: The lifting drive device (500) adopts an electric piston device, and the lifting drive device (500) includes a piston cylinder (510) on the front side and a push rod (520) on the rear side. A front push rod hanging ear (130) is provided on the front side of the lower side of the chassis (100). The front end of the piston cylinder (510) is connected to the front push rod hanging ear (130) via a rotating shaft. A torsion rocker arm (422) is fixedly connected to the torsion rotating shaft (420), and the rear end of the push rod (520) is connected to the torsion rocker arm (422) via a rotating shaft.

8. A floor scrubber, characterized in that: The invention comprises a brush disc device according to any one of claims 1 to 7.

9. The floor scrubber according to claim 8, characterized in that: A water baffle (240) is provided at the edge of the brush plate frame (200), and a leather baffle (241) is provided at the lower side of the water baffle (240).

10. The floor scrubber according to claim 8, characterized in that: A water diversion valve (250) is arranged on the upper side of the brush plate frame (200), the water diversion valve (250) comprising a main water inlet (251) and a water diversion port (252), the main water inlet (251) being connected to an external water source, the water diversion port (252) being connected to a water spray pipe (253), a water spray nozzle (254) being arranged on the output side of the water spray pipe (253), the water spray nozzle (254) facing the brush plate (210).

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