阅读说明：本技术 一种新能源汽车中电子驻车结构的mgu单元 (MGU unit of electron parking structure among new energy automobile ) 是由 周立艳 于 2021-11-05 设计创作，主要内容包括：本发明公开了一种新能源汽车中电子驻车结构的MGU单元,包括安装框,安装框一端安装有电机,且电机输出端通过联轴器固定有驱动轮,安装框上转动安装有与驱动轮相啮合的小带轮,且安装框上还转动安装有与小带轮相互啮合的大带轮,还包括齿轮清洁机构和吹风组件,用于对大带轮外侧轮齿清洁的齿轮清洁机构安装于安装框表面,并与小带轮内连接轴对接,用于对大带轮外侧轮齿进行辅助清洁的吹风组件安装于安装框表面,本发明通过在安装框上设计齿轮清洁机构,从而能够有效的对大带轮和小带轮啮合处的灰尘进行清洁,避免齿轮上吸附灰尘后,会对齿轮之间的摩擦力增大,影响传动。(The invention discloses an MGU unit of an electronic parking structure in a new energy automobile, which comprises an installation frame, wherein one end of the installation frame is provided with a motor, the output end of the motor is fixedly provided with a driving wheel through a coupler, the installation frame is rotatably provided with a small belt wheel meshed with the driving wheel, the installation frame is also rotatably provided with a large belt wheel meshed with the small belt wheel, the MGU unit also comprises a gear cleaning mechanism and a blowing assembly, the gear cleaning mechanism for cleaning the gear teeth on the outer side of the large belt wheel is arranged on the surface of the installation frame and is butted with a connecting shaft in the small belt wheel, the blowing assembly for assisting in cleaning the gear teeth on the outer side of the large belt wheel is arranged on the surface of the installation frame, the invention can effectively clean the dust at the meshing part of the large belt wheel and the small belt wheel by designing the gear cleaning mechanism on the installation frame, and can avoid the increase of the friction force between the gears after the dust is adsorbed on the gears, affecting the transmission.)

1. An MGU unit of an electronic parking structure in a new energy automobile comprises:

the device comprises a mounting frame (1), wherein a motor (2) is mounted at one end of the mounting frame (1), a driving wheel (3) is fixed at the output end of the motor (2) through a coupler, a small belt wheel (4) meshed with the driving wheel (3) is rotatably mounted on the mounting frame (1), and a large belt wheel (5) meshed with the small belt wheel (4) is also rotatably mounted on the mounting frame (1);

it is characterized by also comprising:

the gear cleaning mechanism (6) is used for cleaning gear teeth on the outer side of the large belt wheel (5), is arranged on the surface of the mounting frame (1), and is butted with the connecting shaft in the small belt wheel (4);

the blowing assembly (7) is used for performing auxiliary cleaning on gear teeth on the outer side of the large belt wheel (5), and the blowing assembly (7) is installed on the surface of the installation frame (1).

2. The MGU unit of the electronic parking structure in the new energy vehicle according to claim 1, wherein: clean mechanism (6) of gear include that two fix backup pad (8) on installing frame (1), two rotate between backup pad (8) and install axis of rotation (9), and two axis of rotation (9) outside is fixed with running gear (10), two clean cover (11) have been cup jointed in running gear (10) outside meshing, just clean cover (11) outside is fixed with and is used for the clear brush cover (12) of big band pulley (5) outside teeth of a cogwheel, installing frame (1) surface corresponds link subassembly (13) are installed to backup pad (8) position one side, and installing frame (1) corresponds brush cover (12) position department installs and is used for collection subassembly (14) that the dust was clear away on brush cover (12).

3. The MGU unit of the electronic parking structure in the new energy vehicle according to claim 2, wherein: the linkage assembly (13) comprises a linkage frame (15), one end of the linkage frame (15) is fixed with the connecting shaft in the small belt wheel (4), the other end is rotatably provided with a supporting rod (16) through a bearing, the bottom of the supporting rod (16) is rotatably connected with the surface of the mounting frame (1) through a bearing, a large linkage wheel (17) and a small linkage wheel (18) are respectively fixed at the top of the connecting shaft and the top of the supporting rod (16) in the small belt wheel (4), and the outer sides of the large linkage wheel (17) and the small linkage wheel (18) are engaged and sleeved with a linkage sleeve (19), the top end and the bottom end of the supporting rod (16) are both fixed with a linkage bevel gear (20), and the outer ends of the two rotating shafts (9) are fixed with transmission bevel gears (21) meshed with the linkage bevel gears (20), the middle position of the supporting rod (16) is connected with the blowing component (7).

4. The MGU unit of the electronic parking structure in the new energy vehicle according to claim 2, wherein: the collecting component (14) comprises a rotating rod (22) which is rotatably installed on the surface of the mounting frame (1) through a bearing, the bottom of the rotating rod (22) is connected with a transmission gear (23) at the bottom of the supporting rod (16), the transmission gear (23) is meshed with a transmission sleeve (24) in the outer side, the mounting sleeve (25) is slidably sleeved at the outer side of the rotating rod (22), a shaking piece (26) is installed at the bottom of the mounting sleeve (25), a limiting rod (27) which is fixed to the mounting frame (1) is slidably sleeved at the outer side of the mounting sleeve (25), a collecting frame (28) is fixed at the outer side of the brush sleeve (12), the bottom of the collecting frame (28) is communicated with a collecting pipe (29), the bottom of the collecting pipe (29) is fixedly penetrated through the mounting frame (1), and a collecting cylinder (30) fixed at the bottom of the mounting frame (1) is communicated with the mounting frame.

5. The MGU unit of the electronic parking structure in the new energy vehicle according to claim 4, wherein: tremble and move piece (26) including extrusion spring (31), be located dwang (22) bottom drive gear (23) top with installation cover (25) bottom is fixed with the regulation inclined sleeve (32) of mutually supporting, dwang (22) top is fixed with limiting plate (33), just extrusion spring (31) are located limiting plate (33) with between installation cover (25).

6. The MGU unit of the electronic parking structure in the new energy vehicle according to claim 5, wherein: blow subassembly (7) including rotating the cup joint and be in exhaust stack (34) of bracing piece (16) middle part, bracing piece (16) are located exhaust stack (34) inside one section outside is fixed with air discharge fan (35), just exhaust stack (34) orientation big band pulley (5) one side is fixed with blowing opening (36), just exhaust stack (34) opposite side bottom intercommunication has air inlet (37), the fixed cover in exhaust stack (34) outside has mounting bracket (38) of fixing on installing frame (1) surface.

7. The MGU unit of the electronic parking structure in the new energy vehicle according to claim 2, wherein: installing frame (1) surface corresponds brush cover (12) position department and opens there is mounting groove (39), mounting groove (39) internal fixation has lubricating shell (40), lubricating shell (40) bottom mounting intercommunication has liquid charging pipe (42), just lubricating shell (40) internal fixation has sponge board (41), lubricating shell (40) top be fixed with the extrusion bushing (43) that sponge board (41) laminated mutually, just extrusion bushing (43) top with brush cover (12) contact, extrusion bushing (43) both sides all are fixed with extruded article (44).

8. The MGU unit of the electronic parking structure in the new energy vehicle according to claim 7, wherein: extruded piece (44) is including fixing contact plate (45) in extrusion bushing (43) outer end, clean cover (11) outside is fixed with squeeze bar (47) with contact plate (45) looks adaptation, extrusion bushing (43) outer end bottom be fixed with lubricating shell (40) outer edge board sliding connection's contact lever (46), just contact lever (46) outside cover have with extrusion bushing (43) bottom with reset spring (48) that lubricating shell (40) outer edge board surface offseted, extrusion bushing (43) outer end bottom be fixed with lubricating shell (40) outer edge board sliding connection's spacer pin.

Technical Field

The invention relates to the technical field of MGU units, in particular to an MGU unit of an electronic parking structure in a new energy automobile.

Background

The electronic parking epb (electric park brake) is a technology for realizing parking braking by an electronic control mode, and the electronic hand brake is a technology for realizing parking braking by an electronic control mode. The EPB system can automatically apply parking brake after the engine is shut down, the parking is convenient and reliable, and accidental release (such as children, theft and the like) can be prevented; the traditional mechanical hand brake is replaced by a more advanced electronic control technology, so that the unsafe accidents that the hand brake is forgotten to pull during parking and is forgotten to loosen during starting are avoided; can be used for braking in emergency.

The MGU (motor sealing device) is an electric adjusting unit, is a core driving element of an electronic parking braking system, has great influence on the braking system of an automobile, and has the main power transmission mode transmitted by a gear belt, so that the meshing between gears is important.

Disclosure of Invention

The invention aims to provide an MGU unit of an electronic parking structure in a new energy automobile, which can automatically clean dust without stopping the motor and avoid dust accumulation, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a MGU unit of electron parking structure in new energy automobile, includes the installing frame, the motor is installed to installing frame one end, just the motor output end is fixed with the drive wheel through the shaft coupling, rotate on the installing frame and install the minipulley that meshes with the drive wheel mutually, just still rotate on the installing frame install with minipulley intermeshing's big band pulley, still include clean mechanism of gear and subassembly of blowing, it is right to be used for big band pulley outside teeth of a cogwheel are clean the clean mechanism of gear install in the installing frame surface, and with the butt joint of minipulley in-connection axle, be used for right big band pulley outside teeth of a cogwheel assist clean the subassembly of blowing install in the installing frame surface.

Preferably, the clean mechanism of gear includes two backup pads of fixing on the installing frame, two rotate between the backup pad and install the axis of rotation, and two the axis of rotation outside is fixed with the rotating gear, two the meshing of rotating gear outside has cup jointed clean cover, just the clean cover outside is fixed with and is used for the clear brush cover of big band pulley outside teeth of a cogwheel, the installing frame surface corresponds the linkage subassembly is installed to backup pad position one side, and the installing frame corresponds brush cover position department installs and is used for the collection subassembly that the dust was clear away is sheathe in to the brush, can effectually be with the cleanness of big band pulley and the little band pulley meshing department dust through the clean mechanism of gear.

Preferably, the linkage assembly comprises a linkage frame, one end of the linkage frame is fixed with the small belt pulley inner connecting shaft, the other end of the linkage frame is rotatably provided with a supporting rod through a bearing, the bottom of the supporting rod is rotatably connected with the surface of the mounting frame through a bearing, a large linkage wheel and a small linkage wheel are respectively fixed at the top of the small belt pulley inner connecting shaft and the top of the supporting rod, linkage sleeves are respectively sleeved at the outer sides of the large linkage wheel and the small linkage wheel in a meshing manner, linkage bevel gears are respectively fixed at the top end and the bottom end of the supporting rod, transmission bevel gears meshed with the linkage bevel gears are fixed at the outer ends of the two rotating shafts, the middle position of the supporting rod is connected with the blowing assembly, and the synchronous rotation of the small belt pulley is realized through the linkage assembly, so that the dust at the outer side of the gear can be cleaned when the gear rotates.

Preferably, the collection subassembly include rotate through the bearing install in the dwang on installing frame surface, the dwang bottom with the bracing piece bottom all is fixed with drive gear, and two the drive gear outside meshing has cup jointed the transmission cover, the dwang outside slides and has cup jointed the installation cover, just the installation cover bottom is installed and is trembled the piece, the installation cover outside slide cup joint with the gag lever post that the installing frame was fixed mutually, the installation cover outside is fixed with the collection frame, collect the frame install in the brush cover outside, just it has the collecting pipe to collect frame bottom intercommunication, the collecting pipe bottom is fixed to run through the installing frame, and the intercommunication is fixed the collection section of thick bamboo of installing frame bottom realizes the collection on the brush cover through the collection subassembly for follow-up cleanness is cleaner.

Preferably, the shake piece includes extrusion spring, is located the dwang bottom drive gear top with installation cover bottom is fixed with the regulation inclined sleeve of mutually supporting, the dwang top is fixed with the limiting plate, just extrusion spring is located the limiting plate with between the installation cover, realize shaking the collection frame in the brush cover outside through the shake piece to improve the collection of dust.

Preferably, the subassembly of blowing cup joints including rotating the aiutage at bracing piece middle part, the bracing piece is located one section outside of aiutage inside is fixed with the air discharge fan, just the aiutage orientation big band pulley one side is fixed with the mouth of blowing, just aiutage opposite side bottom intercommunication has the air inlet, the aiutage outside fixed cover has the mounting bracket of fixing on the installing frame surface, through the subassembly of blowing, realizes blowing to the gear outside, and effectual will remain the dust and blow away.

Preferably, the installing frame surface corresponds brush cover position department and opens there is the mounting groove, the mounting groove internal fixation has the lubricating shell, the fixed intercommunication of lubricating shell bottom has the liquid charging pipe, just the lubricating shell internal fixation has the sponge board, the lubricating shell top be fixed with the extrusion bushing that the sponge board was laminated mutually, just the extrusion bushing top with the brush cover contacts, extrusion bushing both sides all are fixed with the extruded article, through the liquid charging pipe of mounting groove internal design, realize carrying out smearing of lubricated liquid to the brush cover outside.

Preferably, the extruded article is including fixing the contact plate in extrusion bushing outer end, the clean cover outside is fixed with the stripper bar with contact plate looks adaptation, extrusion bushing outer end bottom be fixed with lubricated shell is outer along board sliding connection's contact bar, just contact bar outside cover have with extrusion bushing bottom with the outer reset spring that offsets along the board surface of lubricated shell, extrusion bushing outer end bottom be fixed with lubricated shell is outer along board sliding connection's spacer pin, realizes the sponge board through the extruded article and extrudees to make the lubricating oil of absorption extrude in the sponge, realize paining the brush cover, utilize the brush cover to lubricate the gear outside.

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

according to the invention, the gear cleaning mechanism is designed on the mounting frame, so that dust at the meshing part of the large belt wheel and the small belt wheel can be effectively cleaned, and the phenomenon that after dust is adsorbed on the gears, the friction force between the gears is increased to influence transmission is avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of a gear cleaning mechanism of the present invention;

FIG. 4 is a schematic view of another angle structure of the gear cleaning mechanism of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4;

fig. 6 is a partial sectional structural schematic view of the blowing assembly of the present invention;

FIG. 7 is a schematic view showing the positional relationship between the cleaning sleeve and the brush sleeve according to the present invention;

FIG. 8 is a schematic view of the connection between the rotating gear and the cleaning sleeve according to the present invention;

FIG. 9 is a schematic view of a test collection assembly according to the present invention;

FIG. 10 is a schematic view showing the positional relationship between a sponge plate and a pressing bushing according to the present invention;

fig. 11 is an enlarged view of fig. 10 at B.

In the figure: 1-installing a frame; 2, a motor; 3-driving wheels; 4-small belt wheel; 5-large belt wheel; 6-a gear cleaning mechanism; 7-a blowing assembly; 8-a support plate; 9-a rotating shaft; 10-a rotating gear; 11-a cleaning sleeve; 12-a brush sleeve; 13-a linkage assembly; 14-a collection assembly; 15-a linkage frame; 16-a support bar; 17-a large linkage wheel; 18-a small linkage wheel; 19-a linkage sleeve; 20-linked bevel gears; 21-a drive bevel gear; 22-rotating rods; 23-a transmission gear; 24-a transmission sleeve; 25-mounting a sleeve; 26-a wobble member; 27-a limiting rod; 28-a collection frame; 29-a collection tube; 30-a collection cylinder; 31-a compression spring; 32-adjusting the inclined sleeve; 33-a limiting plate; 34-an exhaust funnel; 35-an exhaust fan; 36-air blowing port; 37-an air inlet; 38-a mounting frame; 39-mounting grooves; 40-lubricating the shell; 41-sponge board; 42-a liquid filling pipe; 43-extruding the bushing; 44-an extrusion; 45-a contact plate; 46-contact bar; 47-a squeeze bar; 48-a return spring; 48-return spring.

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.

Example 1

Referring to fig. 1-2, the MGU unit of an electronic parking structure in a new energy vehicle shown in the figure includes a mounting frame 1, a motor 2 is installed at one end of the mounting frame 1, a driving wheel 3 is fixed at an output end of the motor 2 through a coupler, a small pulley 4 engaged with the driving wheel 3 is rotatably installed on the mounting frame 1, a large pulley 5 engaged with the small pulley 4 is further rotatably installed on the mounting frame 1, the MGU unit further includes a gear cleaning mechanism 6 and a blowing assembly 7, the gear cleaning mechanism 6 is used for cleaning external gear teeth of the large pulley 5 and is installed on the surface of the mounting frame 1 and is in butt joint with a connecting shaft in the small pulley 4, and the blowing assembly 7 is used for assisting in cleaning external gear teeth of the large pulley 5 and is installed on the surface of the mounting frame 1.

It should be noted that: in this scheme, installing frame 1 and motor 2 are current MGU unit part, and the clean mechanism 6 of gear of design simultaneously installs on installing frame 1, can not occupy too much space and influence normal installation and use.

In this embodiment, please refer to fig. 3-5, in which the gear cleaning mechanism 6 includes two supporting plates 8 fixed on the mounting frame 1, a rotating shaft 9 is rotatably installed between the two supporting plates 8, rotating gears 10 are fixed on outer sides of the two rotating shafts 9, cleaning sleeves 11 are engaged and sleeved on outer sides of the two rotating gears 10, brush sleeves 12 for cleaning outer-side gear teeth of the large belt pulley 5 are fixed on outer sides of the cleaning sleeves 11, a linkage assembly 13 is installed on one side of the surface of the mounting frame 1 corresponding to the supporting plate 8, and a collection assembly 14 for removing dust on the brush sleeves 12 is installed on the mounting frame 1 corresponding to the brush sleeves 12;

it should be noted that: brush cover 12 in this scheme is made for soft brush material, conveniently cleans the dust, and clean cover 11 adopts the material of similar sponge to make, plays certain holding power.

Wherein, please refer to fig. 3 and 4, the linkage assembly 13 includes a linkage frame 15, one end of the linkage frame 15 is fixed with the inner connecting shaft of the small pulley 4, and the other end is rotatably installed with a support rod 16 through a bearing, the bottom of the support rod 16 is rotatably connected with the surface of the mounting frame 1 through a bearing, the top of the inner connecting shaft of the small pulley 4 and the top of the support rod 16 are respectively fixed with a large linkage wheel 17 and a small linkage wheel 18, and the outer sides of the large linkage wheel 17 and the small linkage wheel 18 are engaged and sleeved with a linkage sleeve 19, the top and the bottom of the support rod 16 are both fixed with a linkage bevel gear 20, the outer ends of the two rotating shafts 9 are fixed with transmission bevel gears 21 engaged with the linkage bevel gears 20, and the middle position of the support rod 16 is connected with the blowing assembly 7;

it should be noted that: through the normal rotation of motor 2, drive little band pulley 4 and rotate to make big interlocking wheel 17 rotate with little interlocking wheel 18 synchronization, make bracing piece 16 rotate, rethread linkage bevel gear 20 and transmission bevel gear 21 mutually support, thereby realize rotating two axis of rotation 9, realize carrying out the circulation rotation to clean cover 11, it is more convenient to clean the dust.

In addition, referring to fig. 7-9, the collecting assembly 14 shown in the figure includes a rotating rod 22 rotatably mounted on the surface of the mounting frame 1 through a bearing, transmission gears 23 are fixed at the bottom of the rotating rod 22 and the bottom of the supporting rod 16, a transmission sleeve 24 is engaged and sleeved at the outer sides of the two transmission gears 23, a mounting sleeve 25 is slidably sleeved at the outer side of the rotating rod 22, a shaking piece 26 is mounted at the bottom of the mounting sleeve 25, a limiting rod 27 fixed with the mounting frame 1 is slidably sleeved at the outer side of the mounting sleeve 25, a collecting frame 28 is fixed at the outer side of the mounting sleeve 25, the collecting frame 28 is mounted at the outer side of the brush sleeve 12, a collecting pipe 29 is communicated with the bottom of the collecting pipe 28, the bottom of the collecting pipe 29 fixedly penetrates through the mounting frame 1, and a collecting barrel 30 fixed at the bottom of the mounting frame 1 is communicated with the collecting barrel.

It should be noted that: utilize the design to contact with brush cover 12 at the collection frame 28 in the brush cover 12 outside to can scrape the adsorbed dust on the brush cover 12 and fall, make the long-time deashing in later stage, still can the deashing well.

In addition, please refer to fig. 6, the blowing assembly 7 includes an exhaust funnel 34 rotatably sleeved at the middle portion of the support rod 16, an exhaust fan 35 is fixed at the outer side of a section of the support rod 16 located inside the exhaust funnel 34, an air blowing opening 36 is fixed at one side of the exhaust funnel 34 facing the large belt wheel 5, an air inlet 37 is communicated with the bottom end of the other side of the exhaust funnel 34, and an installation frame 38 fixed on the surface of the installation frame 1 is fixedly sleeved at the outer side of the exhaust funnel 34.

It should be noted that: the blowing assembly 7 utilizes the support rod 16 to drive the exhaust fan 35 to rotate, so that negative pressure blowing is generated, residual dust on the outer side of the gear is blown away, and the cleaning effect is improved.

When dust on the outer side of the gear is cleaned without stopping; at first personnel driving motor 2 rotates, make 4 normal rotations of little band pulley, under linkage assembly 13's effect, drive two axis of rotation 9 and rotate, thereby make clean cover 11 and brush cover 12 carry out effectual circulation and rotate, can clean the gear outside, and simultaneously, through the collection subassembly 14 of design, can scrape the brush cover 12 that adsorbs the dust, collect adsorbed dust, thereby when can making motor 2 rotate for a long time, can effectually clean in time the inside dust.

Example 2

Referring to fig. 7-9, in this embodiment, as further described in example 1, the collection assembly 14 in the figure includes a rotation rod 22 rotatably mounted on the surface of the mounting frame 1 through a bearing, transmission gears 23 are fixed at the bottom of the rotation rod 22 and the bottom of the support rod 16, a transmission sleeve 24 is engaged and sleeved at the outer sides of the two transmission gears 23, a mounting sleeve 25 is slidably sleeved at the outer side of the rotation rod 22, a shaking piece 26 is mounted at the bottom of the mounting sleeve 25, a limiting rod 27 fixed to the mounting frame 1 is slidably sleeved at the outer side of the mounting sleeve 25, a collection frame 28 is fixed at the outer side of the mounting sleeve 25, the collection frame 28 is mounted at the outer side of the brush sleeve 12, a collection pipe 29 is communicated with the bottom of the collection pipe 28, and the bottom of the collection pipe 29 fixedly penetrates through the mounting frame 1 and is communicated with a collection barrel 30 fixed at the bottom of the mounting frame 1;

referring to fig. 7-9, the shaking unit 26 shown in the figure includes a pressing spring 31, an adjusting inclined sleeve 32 is fixed at the top of the transmission gear 23 at the bottom end of the rotating rod 22 and at the bottom of the mounting sleeve 25, a limiting plate 33 is fixed at the top end of the rotating rod 22, and the pressing spring 31 is located between the limiting plate 33 and the mounting sleeve 25.

In this embodiment, through the linkage of design linkage subassembly 13, utilize the rotation of bracing piece 16, the mutual transmission of drive gear 23 and transmission cover 24 is deuterogamied, thereby make dwang 22 rotate, thereby drive the regulation taper sleeve 32 of installing on drive gear 23 and the regulation taper sleeve 32 of installing the cover 25 bottom and carry out the dislocation rotation, thereby drive the upper and lower shake of installing the cover 25 endless, drive and collect frame 28 and shake, the collection efficiency of improvement dust, collecting pipe 29 and collecting cylinder 30's effect simultaneously, can effectually store the dust of collecting, thereby make motor 2 can satisfy still can the automatic deashing after the operation is long-time.

Example 3

Referring to fig. 3-5, in the present embodiment, for further explanation of other embodiments, the gear cleaning mechanism 6 in the drawings includes two supporting plates 8 fixed on the mounting frame 1, a rotating shaft 9 is rotatably installed between the two supporting plates 8, rotating gears 10 are fixed on outer sides of the two rotating shafts 9, cleaning sleeves 11 are engaged and sleeved on outer sides of the two rotating gears 10, brush sleeves 12 for cleaning gear teeth on outer sides of the large pulley 5 are fixed on outer sides of the cleaning sleeves 11, a linkage assembly 13 is installed on one side of the surface of the mounting frame 1 corresponding to the supporting plates 8, and a collection assembly 14 for removing dust on the brush sleeves 12 is installed on the mounting frame 1 corresponding to the position of the brush sleeves 12.

Referring to fig. 3, 10 and 11, the surface of the mounting frame 1 shown in the drawings is provided with a mounting groove 39 corresponding to the position of the brush sleeve 12, a lubricating shell 40 is fixed in the mounting groove 39, the bottom end of the lubricating shell 40 is fixedly communicated with a liquid charging pipe 42, a sponge plate 41 is fixed in the lubricating shell 40, a squeezing bushing 43 attached to the sponge plate 41 is fixed at the top of the lubricating shell 40, the top of the squeezing bushing 43 contacts with the brush sleeve 12, and squeezing pieces 44 are fixed at both sides of the squeezing bushing 43;

wherein, the extruded part 44 includes the contact plate 45 of fixing in the extrusion bushing 43 outer end, clean the cover 11 outside and be fixed with the extrusion pole 47 with contact plate 45 looks adaptation, extrusion bushing 43 outer end bottom is fixed with the contact bar 46 with lubricated shell 40 outer edge board sliding connection, and contact bar 46 outside cover have with extrusion bushing 43 bottom and lubricated shell 40 outer edge board surface offset reset spring 48, extrusion bushing 43 outer end bottom is fixed with the spacer pin with lubricated shell 40 outer edge board sliding connection.

It should be noted that: this scheme is through seting up mounting groove 39 on installing frame 1 to utilize internally mounted's lubricated shell 40 and sponge board 41's effect, make clean cover 11 when rotating at every turn, can extrude sponge board 41, extrude inside lubricating oil, and absorb through clean cover 11, paint to the gear outside, thereby reduce gear wheel rotational friction power, make to rotate more smoothly, design liquid filling pipe 42 simultaneously, satisfy the supply to lubricating oil.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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.