CN112369977A

CN112369977A - Magnetic adsorption device for stair carpet

Info

Publication number: CN112369977A
Application number: CN202011226266.XA
Authority: CN
Inventors: 方兵
Original assignee: 方兵
Current assignee: Suzhou Lihe Information Technology Co.,Ltd.
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-02-19
Anticipated expiration: 2040-11-06
Also published as: CN112369977B

Abstract

The invention discloses a magnetic adsorption device for a stair carpet, which comprises an external control mechanism for controlling the device, a magnetic adsorption mechanism for generating static electricity by friction and a rotary poking mechanism for rotatably poking the carpet, wherein a connecting plate is arranged inside the external control mechanism, the magnetic adsorption mechanism is fixedly connected inside the external control mechanism through the arranged connecting plate, and the rotary poking mechanism is arranged inside the external control mechanism through the bottom end of the arranged connecting plate. First brush roller and the mutual touching friction of second brush roller produce great static, and static has the effect of adsorbing hair and dust, and first brush roller and the mutual touching friction of second brush roller can also increase a static to the woollen blanket in the time of rolling on the carpet moreover, make the fine hair separation between the carpet, rubbish between the clearance fine hair of more convenient, first brush roller and second brush roller have great frictional force, so the electrostatic adsorption power that produces is bigger, adsorbs rubbish easily.

Description

Magnetic adsorption device for stair carpet

Technical Field

The invention belongs to the technical field of stair carpet cleaning, and particularly relates to a magnetic adsorption device for a stair carpet.

Background

The carpet is a ground laying object which is formed by weaving, tufting or spinning natural fibers or chemical synthetic fiber raw materials such as cotton, hemp, wool, silk, grass yarn and the like through a manual or mechanical process; stair carpet, the dedicated carpet of stair also can be fine antiskid, silence when protecting stair step, and the intermediate position at stair is installed usually to the stair carpet.

The stair carpet is very easy to fall rubbish and dust after frequent use, and when cleaning, the carpet on the stair surface is cleaned more easily, but the corner of stair is more difficult to clean, and the stair carpet is more easily compacted than being normally trampled by using a larger force when going up and down stairs, so the stair carpet is also a reason more difficult to clean.

Disclosure of Invention

The invention aims to provide a magnetic adsorption device for a stair carpet, and the magnetic adsorption device is used for solving the problem that the corners of a stair are difficult to clean and the cleaning is inconvenient in the use process of the conventional magnetic adsorption device for the stair carpet in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a stair are magnetic adsorption device for carpet, includes the external control mechanism that is used for controlling means, is used for the friction to take place the magnetic adsorption mechanism of static and is used for rotating the rotation of dialling the carpet and dials opening mechanism, external control mechanism's inside is provided with the connecting plate, external control mechanism's inside is provided with magnetic adsorption mechanism through the connecting plate fixed connection that sets up, external control mechanism's inside is provided with through the bottom of the connecting plate that sets up and rotates and dials opening mechanism.

Preferably, the inside of external control mechanism includes arc frame, battery, start handle, connecting plate and collecting box, the right side of arc frame is provided with the start handle, the center department of arc frame is provided with the battery, the left side fixedly connected with connecting plate of arc frame, and the quantity of connecting plate is two, every the top fixedly connected with collecting box that the arc frame was kept away from to the connecting plate outer wall, the outer wall of collecting box articulates there is the door plant, the wiring end of handle is connected respectively on the wiring end of second motor, first motor.

Preferably, the magnetic adsorption mechanism comprises a transmission set, an inner spiral roller, an outer spiral roller, a first motor, a cylinder and a through hole, the transmission set is fixedly arranged on the outer wall of the connecting plate, the cylinder is welded at one end, far away from the connecting plate, of the outer wall of the transmission set, a bearing B is fixedly connected with the outer wall of the cylinder, a support A is welded on the outer wall of the connecting plate, the outer wall of the cylinder is fixedly connected onto the support A of the connecting plate through the arranged bearing B, the through hole is formed in the outer wall of the inner spiral roller, the outer spiral roller is welded at the middle position of the two cylinders, the inner spiral roller is arranged at the axis of the outer spiral roller, the two ends of the inner spiral roller are also connected with the cylinder, a conical shaft is welded at the back of the outer wall of the cylinder, far away from the outer spiral roller, the outer, the axes of the cylinder and the inner spiral roller are hollow.

Preferably, the bottom of outside spiral roller is provided with first brush roller, the both sides fixedly connected with bearing C of first brush roller, the both sides of first brush roller are through the inner wall of the bearing C fixed connection who sets up at the connecting plate, the left end fixedly connected with bearing D of first brush roller is kept away from to the connecting plate outer wall, the outer wall of connecting plate is through the bearing D fixedly connected with second brush roller that sets up, the connecting plate outer wall is through the support A fixedly connected with battery box that sets up, the bottom fixedly connected with copper line of battery box.

Preferably, the left end of second brush roller is provided with the hydraulic stem, the both ends fixedly connected with bearing E of hydraulic stem, the bearing E fixed connection that sets up is in the left side of connecting plate in the both sides of hydraulic stem, the both ends welding of hydraulic stem has first hexagon, the outer wall fixedly connected with second hexagon of hydraulic stem, the outer wall of hydraulic stem is pegged graft and is had protruding piece, the hole with protruding piece looks adaptation is seted up to second hexagon outer wall, the outer wall of first hexagon has cup jointed the absorption brush, the outer wall of hydraulic stem has cup jointed the inlayer brush, the outer wall of inlayer brush has cup jointed the outer brush, the inside of inlayer brush, absorption brush all is provided with viscidity and glues.

Preferably, the inside of dialling the opening mechanism is rotated and is included second motor, first runner, round rod and second runner, the outer wall welding of second motor has support B, the outer wall of second motor is through the support B welding that sets up at the outer wall of connecting plate, the axle center department of second motor rotates and is connected with first runner, the outer wall rotation of first runner is connected with the belt, the outer wall of first runner has the second runner through the belt swing joint who sets up, the left side welding of second runner has round rod.

Preferably, two bearing F of outer wall fixedly connected with of round rod, the outer wall of round rod is through two bearing F fixedly connected with telescopic links that set up, the top fixed connection of telescopic link is in the bottom of connecting plate, the outer wall of round rod set up with the three groove of first spring looks adaptation, and three first spring pegs graft at the inslot of round rod, every two protruding pieces of both ends fixedly connected with of first spring, the groove of a plurality of and arc piece looks adaptation is seted up to the outer wall of second brush roller, and the inslot of a plurality of arc piece joint at the second brush roller, every the inslot of second brush roller and the crack department between the arc piece outer wall all are provided with the second spring.

Compared with the prior art, the invention has the beneficial effects that:

1. through the mutual touching friction of first brush roller and second brush roller, produce great static, static has the effect of adsorbing hair and dust, can clean the carpet efficient, and the mutual touching friction of first brush roller and second brush roller can also increase a static to the woollen blanket in the time of rolling on the carpet in addition, make the fine hair separation between the carpet, the rubbish between the more convenient clearance fine hair, first brush roller has great frictional force with the second brush roller, so the electrostatic adsorption who produces is bigger, adsorb rubbish easily.

2. Through the setting of battery box and copper line, the positive pole of battery box can adsorb the static on the first brush roller, and including the guide of copper line, can adsorb static on a large scale, adsorb the static above the first brush roller, rubbish dust just can not adsorb on it, conveniently clears up.

3. Roll through the second hexagon and push down, when clearing up the turning, the second hexagon extrudees in the viscidity is glued, make the inlayer brush warp according to the shape at turning, the turning of the arbitrary shape of clearance that can be convenient, it is effectual to clear up, the brush above inlayer brush and the outer brush is harder, can prick into the pile of carpet and clear up rubbish, inside rubbish in the convenient clearance pile, when returning after the clearance is accomplished, the rubbish above the inlayer brush can be conveniently rolled off to the outer brush, prevent that rubbish from blocking in the brush, the outer brush rises the back, the pile above the second brush roller is more easily beaten on the brush of outer brush, avoid rubbish and dust to remain on the outer brush.

4. When clearing up the less turning in both sides, press down protruding piece, make the hydraulic stem extension, also have viscidity to glue in the absorption brush, the rubbish and the dust of the less turning of absorption brush can be cleared up to ensure the clean degree of stair carpet, avoid rubbish and dust to remain.

5. The plush on the adsorption brush is harder, so that the static electricity generated when the plush is rubbed by the second brush roller is smaller, when the garbage and the dust at the corners are adsorbed, the adsorption can be carried out for a short time, the effect of bringing the garbage and the dust out is achieved, then the garbage is cleaned by the second brush roller, the long-time adsorption on the adsorption brush is avoided, and the cleaning effect of the next cleaning of the adsorption brush is ensured.

6. The diameter of the first brush roller is larger than that of the second brush roller, and under the conventional condition, the larger the volume of an object is, the larger the molecular potential energy is, and the second brush roller can adsorb dust on the first brush roller more easily, so that the second brush roller can be cleaned next time conveniently.

7. Inside helical roll clears up the adsorbed rubbish above the first brush roller with outside helical roll in the pivoted, and inside helical roll all is the helical shape with outside helical roll, when scraping rubbish on the first brush roller pile, still can not cause the damage to the pile, and the rubbish of scraping falls on the arc of the two on, then rotates and deposits to the collection box, effectual storage when collecting to ensure the cleaning performance of clearance next time.

8. The telescopic link makes the biggest power of round rod contact ground, and first spring makes the most forcefully contact carpet of protruding piece, can ensure the biggest power and contact ground, when the second motor drives the rotation, ensures to draw the clearance between the big carpet always, makes things convenient for the clearance of follow-up rubbish.

9. When the arc blocks on the second brush roller are in contact with the ground, the second spring applies maximum force to extrude, when the second brush roller drives the first hexagon to rotate, the first hexagon is an arc and is installed on the second brush roller, the carpet can be effectively dragged to increase the gap, the gap between the piles can be increased by increasing the gap, and the garbage and the dust in the gap can be more conveniently cleaned, so that the cleaning degree of the stair carpet is ensured.

10. The shape of first hexagon and second hexagon all is the hexagon, and laminating wall corner that can be fine increases the effect of clearance.

Drawings

FIG. 1 is a schematic perspective view of the present invention from the axial side;

FIG. 2 is a schematic cross-sectional view of part A of FIG. 1 according to the present invention;

FIG. 3 is a schematic cross-sectional view of the portion B of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the portion D of FIG. 3 according to the present invention;

FIG. 5 is a schematic cross-sectional view of section C of FIG. 1 according to the present invention;

FIG. 6 is a schematic view of the hydraulic ram of the present invention;

FIG. 7 is a schematic view of the construction of the external spiral roller of the present invention;

FIG. 8 is a schematic cross-sectional view of FIG. 7 in accordance with the present invention;

fig. 9 is a schematic view of the internal helical roll structure of the present invention.

In the figure: 1. an external control mechanism; 101. an arc-shaped frame; 102. a storage battery; 103. starting a handle; 104. a connecting plate; 105. a collection box; 2. a magnetic adsorption mechanism; 201. a transmission set; 202. a copper wire; 203. a battery box; 204. a first brush roller; 205. a second brush roller; 206. an adsorption brush; 207. an inner helical roller; 208. an outer helical roller; 209. a first hexagon; 210. a second hexagon; 211. a protruding block; 212. a hydraulic lever; 213. adhesive glue; 214. an outer layer brush; 215. an inner layer brush; 216. a first motor; 217. a cylinder; 218. a through hole; 3. rotating the opening mechanism; 301. a second motor; 302. a first runner; 303. a round stick; 304. a telescopic rod; 305. a first spring; 306. a raised block; 307. a second runner; 308. a second spring; 309. an arc-shaped block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a stair are magnetic adsorption device for carpet, includes that the external control mechanism 1 that is used for controlling means, the rotation that is used for the friction to take place the magnetic adsorption mechanism 2 of static and is used for rotating the carpet of dialling and dial out mechanism 3, and the inside of external control mechanism 1 is provided with connecting plate 104, and the inside of external control mechanism 1 is provided with through the connecting plate 104 fixed connection who sets up magnetic adsorption mechanism 2, and the bottom of the inside connecting plate 104 through the setting of external control mechanism 1 is provided with the rotation and dials out mechanism 3.

In this embodiment, the positive electrode of the battery box 203 can adsorb static electricity by the arrangement of the battery box 203 and the copper wire 202.

Specifically, the inside of external control mechanism 1 includes arc frame 101, battery 102, start handle 103, connecting plate 104 and collecting box 105, and the right side of arc frame 101 is provided with start handle 103, and the center department of arc frame 101 is provided with battery 102, and the left side fixedly connected with connecting plate 104 of arc frame 101, and the quantity of connecting plate 104 is two, and the top fixedly connected with collecting box 105 of arc frame 101 is kept away from to every connecting plate 104 outer wall, and the outer wall of collecting box 105 articulates there is the door plant.

In this embodiment, a household common battery is installed in the battery box 203, and the positive electrode of the battery is connected to the copper wire 202.

Specifically, the magnetic adsorption mechanism 2 includes a transmission set 201, an internal spiral roller 207, an external spiral roller 208, a first motor 216, a cylinder 217 and a through hole 218, the transmission set 201 is fixedly installed on the outer wall of the connecting plate 104, the cylinder 217 is welded on one end of the outer wall of the transmission set 201 away from the connecting plate 104, a bearing B is fixedly connected with the outer wall of the cylinder 217, a bracket a is welded on the outer wall of the connecting plate 104, the outer wall of the cylinder 217 is fixedly connected on the bracket a of the connecting plate 104 through the arranged bearing B, the through hole 218 is formed in the outer wall of the internal spiral roller 207, the external spiral roller 208 is welded in the middle position of the two cylinders 217, the internal spiral roller 207 is arranged at the axis of the external spiral roller 208, the two ends of the internal spiral roller 207 are also connected with the cylinder 217, a tapered shaft is welded on the back of the outer wall of the cylinder 217 away from the external spiral roller, the axes of the cylinder 217 and the inner helical roller 207 are hollow.

In this embodiment, the trash and dust moves on the arc-shaped plates on the inner and

outer spiral rollers

207 and 208 and then falls through the through-holes 218.

Specifically, the bottom of outside spiral roller 208 is provided with first brush roller 204, the both sides fixedly connected with bearing C of first brush roller 204, the inner wall of bearing C fixed connection at connecting plate 104 through setting up is passed through to the both sides of first brush roller 204, the left end fixedly connected with bearing D of first brush roller 204 is kept away from to connecting plate 104 outer wall, the outer wall of connecting plate 104 is through the bearing D fixedly connected with second brush roller 205 that sets up, the outer wall of connecting plate 104 is through the support A fixedly connected with battery box 203 that sets up, the bottom fixedly connected with copper line 202 of battery box 203.

In this embodiment, the transmission set 201 adopts transmission between a belt and a belt wheel to drive the cylinder 217 and the first brush roller 204 to rotate.

Specifically, the left end of second brush roller 205 is provided with hydraulic stem 212, the both ends fixedly connected with bearing E of hydraulic stem 212, the left side at connecting plate 104 is passed through the bearing E fixed connection who sets up in the both sides of hydraulic stem 212, the both ends welding of hydraulic stem 212 has first hexagon 209, the outer wall fixedly connected with second hexagon 210 of hydraulic stem 212, the outer wall of hydraulic stem 212 is pegged graft and is had protruding piece 211, the hole with protruding piece 211 looks adaptation is seted up to second hexagon 210 outer wall, the outer wall of first hexagon 209 has cup jointed absorption brush 206, the outer wall of hydraulic stem 212 has cup jointed inlayer brush 215, outer brush 214 has been cup jointed to the outer wall of inlayer brush 215, the inside of absorption brush 206 all is provided with viscidity glue 213.

In this embodiment, the models of the second motor 301 and the first motor 216 are 35HS 014.

Specifically, the inside of rotating and setting aside mechanism 3 includes second motor 301, first runner 302, rod 303 and second runner 307, the outer wall welding of second motor 301 has support B, the outer wall of second motor 301 welds the outer wall at connecting plate 104 through the support B who sets up, the axle center department of second motor 301 rotates and is connected with first runner 302, the outer wall rotation of first runner 302 is connected with the belt, the outer wall of first runner 302 has second runner 307 through the belt swing joint who sets up, the left side welding of second runner 307 has rod 303.

In this embodiment, collecting box 105 is all installed to the device both sides, opens the door plant on the collecting box 105 and can clear up rubbish, and the material that viscidity glues 213 is the same with the keyboard of daily keyboard clearance glues, and is less than keyboard sticky consistency.

Specifically, two bearing F of outer wall fixedly connected with of round rod 303, two bearing F fixedly connected with telescopic links 304 that the outer wall of round rod 303 is through setting up, the top fixed connection of telescopic link 304 is in the bottom of connecting plate 104, the three groove with first spring 305 looks adaptation is seted up to the outer wall of round rod 303, and three first spring 305 is pegged graft at the inslot of round rod 303, two protruding pieces 306 of both ends fixedly connected with of every first spring 305, the groove of a plurality of and arc piece 309 looks adaptation is seted up to the outer wall of second brush roller 205, and a plurality of arc piece 309 joint is at the inslot of second brush roller 205, every second brush roller 205's inslot and the crack department between the outer wall of arc piece 309 all are provided with second spring 308.

In this embodiment, the second spring 308 may maintain the arcuate block 309 at a maximum force against the carpet.

The working principle and the using process of the invention are as follows: twisting the starting handle 103 on the arc-shaped frame 101, driving the first brush roller 204 to rotate through the transmission set 201 by the first motor 216, advancing and retreating, generating static electricity by the friction of the second brush roller 205 and the first brush roller 204 to adsorb garbage and dust, contacting the inner layer brush 215 and the outer layer brush 214 to the corners of the stairs, slowly moving the second hexagon 210 downwards to press down the protruding block 211, adsorbing the garbage and dust by the inner layer brush 215 and the outer layer brush 214, extending two sides of the first hexagon 209 at two sides when pressing down the protruding block 211 to make the adsorbing brush 206 contact the corners at two sides, respectively cleaning one side for cleaning, adsorbing the garbage adhered by the adsorbing brush 206, the inner layer brush 215 and the outer layer brush 214 by the lint on the second brush roller 205, supplying power by the copper wire 202 through the battery box 203 to reduce the static electricity on the first brush roller 204, beating the lint on the first brush roller 204 to the external spiral roller 208 and the internal spiral roller 207, the first motor 216 drives the external spiral roller 208 and the internal spiral roller 207 to rotate through the cylinder 217, cleaned garbage and dust are leaked from the through holes 218 on two sides and stored in the collection box 105, the second motor 301 enables the round stick 303 to rotate through the first rotating wheel 302, the belt and the second rotating wheel 307, the telescopic rod 304 compresses the round stick 303, the spring in the round stick 303 enables the convex block 306 to compress a carpet to stir the carpet, and the second spring 308 in the second brush roller 205 pushes the arc-shaped block 309 to compress the carpet.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a stair are magnetic adsorption device for carpet, includes outside control mechanism (1) that is used for controlling means, is used for the friction to take place magnetic adsorption mechanism (2) of static and is used for rotating to dial out the rotation of carpet and dials out mechanism (3), its characterized in that: the inside of external control mechanism (1) is provided with connecting plate (104), the inside of external control mechanism (1) is through connecting plate (104) fixed connection that sets up have magnetic adsorption mechanism (2), the inside of external control mechanism (1) is provided with through the bottom of connecting plate (104) that sets up and rotates and dial-off mechanism (3).

2. The magnetic adsorption device for stair carpets according to claim 1, wherein: the external control mechanism (1) is characterized in that the internal part comprises an arc-shaped frame (101), a storage battery (102), a starting handle (103), a connecting plate (104) and a collecting box (105), the starting handle (103) is arranged on the right side of the arc-shaped frame (101), the storage battery (102) is arranged at the center of the arc-shaped frame (101), the connecting plate (104) is fixedly connected to the left side of the arc-shaped frame (101), the connecting plate (104) is two in number, each connecting plate (104) is far away from the collecting box (105) which is fixedly connected to the top end of the arc-shaped frame (101), and the outer wall of each collecting box (105) is hinged to.

3. The magnetic adsorption device for stair carpets according to claim 1, wherein: the magnetic adsorption mechanism (2) is characterized in that the magnetic adsorption mechanism (2) comprises a transmission set (201), an internal spiral roller (207), an external spiral roller (208), a first motor (216), a cylinder (217) and a through hole (218), the transmission set (201) is fixedly installed on the outer wall of a connecting plate (104), one end, far away from the connecting plate (104), of the outer wall of the transmission set (201) is welded with the cylinder (217), the outer wall of the cylinder (217) is fixedly connected with a bearing B, the outer wall of the connecting plate (104) is welded with a support A, the outer wall of the cylinder (217) is fixedly connected with the support A of the connecting plate (104) through the arranged bearing B, the through hole (218) is formed in the outer wall of the internal spiral roller (207), the external spiral roller (208) is welded in the middle of the two cylinders (217), and the internal spiral roller (207) is arranged, and the both ends of inside spiral roller (207) also are connected with drum (217), the back welding that outside spiral roller (208) was kept away from to drum (217) outer wall has the conical shaft, the outer wall of drum (217) rotates the axle center department of connecting at first motor (216) through the conical shaft that sets up, the axle center department of drum (217), inside spiral roller (207) is hollow.

4. The magnetic adsorption device for stair carpets according to claim 3, wherein: the bottom of outside spiral roller (208) is provided with first brush roller (204), the both sides fixedly connected with bearing C of first brush roller (204), the both sides of first brush roller (204) are through the inner wall of the bearing C fixed connection that sets up at connecting plate (104), the left end fixedly connected with bearing D of first brush roller (204) is kept away from to connecting plate (104) outer wall, the outer wall of connecting plate (104) is through the bearing D fixedly connected with second brush roller (205) that sets up, connecting plate (104) outer wall is through support A fixedly connected with battery box (203) that sets up, the bottom fixedly connected with copper line (202) of battery box (203).

5. The magnetic adsorption device for stair carpets according to claim 4, wherein: a hydraulic rod (212) is arranged at the left end of the second brush roller (205), two ends of the hydraulic rod (212) are fixedly connected with a bearing E, two sides of the hydraulic rod (212) are fixedly connected with the left side of the connecting plate (104) through a set bearing E, two ends of the hydraulic rod (212) are welded with first hexagons (209), the outer wall of the hydraulic rod (212) is fixedly connected with second hexagons (210), the outer wall of the hydraulic rod (212) is inserted with a protruding block (211), the outer wall of the second hexagon (210) is provided with a hole matched with the protruding block (211), the outer wall of the first hexagon (209) is sleeved with an adsorption brush (206), the outer wall of the hydraulic rod (212) is sleeved with an inner layer brush (215), outer layer brush (214) has been cup jointed to the outer wall of inlayer brush (215), the inside of inlayer brush (215), adsorption brush (206) all is provided with viscidity and glues (213).

6. The magnetic adsorption device for stair carpets according to claim 1, wherein: rotate the inside of dialling opening mechanism (3) and include second motor (301), first runner (302), round rod (303) and second runner (307), the outer wall welding of second motor (301) has support B, the outer wall of second motor (301) is through the support B welding that sets up at the outer wall of connecting plate (104), the axle center department of second motor (301) rotates and is connected with first runner (302), the outer wall rotation of first runner (302) is connected with the belt, the outer wall of first runner (302) has second runner (307) through the belt swing joint who sets up, the left side welding of second runner (307) has round rod (303).

7. The magnetic adsorption device for stair carpets according to claim 6, wherein: the outer wall of the round stick (303) is fixedly connected with two bearings F, the outer wall of the round stick (303) is fixedly connected with a telescopic rod (304) through the two bearings F, the top of the telescopic rod (304) is fixedly connected with the bottom of the connecting plate (104), the outer wall of the round stick (303) is provided with three grooves matched with the first spring (305), and the three first springs (305) are inserted in the grooves of the round stick (303), two ends of each first spring (305) are fixedly connected with two convex blocks (306), the outer wall of the second brush roller (205) is provided with a plurality of grooves matched with the arc-shaped blocks (309), and a plurality of arc-shaped blocks (309) are clamped in the grooves of the second brush rollers (205), and a second spring (308) is arranged at a gap between the inner wall of each second brush roller (205) and the outer wall of each arc-shaped block (309).