CN114986288B - Wall surface grinding machine adopting novel brushless motor structure and application method thereof - Google Patents
Wall surface grinding machine adopting novel brushless motor structure and application method thereof Download PDFInfo
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- CN114986288B CN114986288B CN202210524429.5A CN202210524429A CN114986288B CN 114986288 B CN114986288 B CN 114986288B CN 202210524429 A CN202210524429 A CN 202210524429A CN 114986288 B CN114986288 B CN 114986288B
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- motor
- outer side
- dust collection
- air inlet
- hollow handle
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- 238000000034 method Methods 0.000 title claims description 13
- 239000000428 dust Substances 0.000 claims abstract description 107
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000000605 extraction Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims description 56
- 238000007789 sealing Methods 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 34
- 230000017525 heat dissipation Effects 0.000 claims description 26
- 238000005192 partition Methods 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 14
- 238000012546 transfer Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 abstract description 14
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
- B24B7/182—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings
- B24B7/184—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings pole sanders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
- B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
- B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model provides an adopt novel brushless motor structure's wall polisher, which comprises a housing, install hollow handle on the casing, install the biax motor on the casing, dust extraction and install the controller on hollow handle, two fixed forks of being connected with the casing about the hollow handle is close to one side of casing is installed, the inboard central point of casing puts and opens there is the mounting hole, the mounting hole upper end is equipped with the motor cabinet of fixed connection in the casing outside, biax motor installs in the motor cabinet upper end, first helical gear is installed to the output shaft of biax motor lower extreme, first helical gear front side is equipped with the second helical gear, the transmission shaft is installed to the inboard central point of second helical gear, the transmission shaft upper end rotates to be connected in the motor cabinet lower extreme inboard, the limit bearing is set up to the second helical gear lower extreme, the motor cabinet lower extreme is equipped with sealed lid, the transmission shaft lower extreme passes sealed cover fixedly connected with and is located the mill of casing lower extreme, the protective housing of fixedly connected in the motor cabinet upper end is equipped with in the biax motor outside.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a wall surface grinding machine adopting a novel brushless motor structure and a using method thereof.
Background
At present, a wall surface polishing machine is an electric tool which uses electric power as power to drive a sand sheet on the end face of a sand disc to rotate at a high speed to polish and clean the surface of a wall.
The utility model discloses a wall polisher as disclosed in patent application number CN201820959374.X relates to the equipment field of polishing, and wall polisher includes: the device comprises an outer grinding disc, an inner grinding disc, a linkage part, a transmission part, a driving part and a handheld part; the outer polishing disc and the inner polishing disc are coaxially arranged with each other; the linkage part is meshed with the outer polishing disc and the inner polishing disc, and can enable the outer polishing disc and the inner polishing disc to reversely rotate; the transmission part is used for connecting the driving part and the linkage part and transmitting the power of the driving part to the linkage part; the handheld part is fixed on the driving part, and most of torsion is counteracted by the design of bidirectional rotation, so that a user can save more labor in the use process, and the wall surface can be polished more smoothly and finely; through the design of impeller, make polisher can be better collect the dust of polishing production in the process of polishing.
However, the motor transmission part of the polishing machine disclosed by the above publication has a complex structure, is troublesome to assemble, increases the volume of the equipment connection part, is troublesome to maintain and replace, and has low transmission efficiency and large power loss.
Disclosure of Invention
The utility model aims to solve the problems in the prior art, and provides the wall surface grinding machine adopting the novel brushless motor structure, which has the advantages of reasonable structural design, more convenient disassembly and maintenance, high transmission efficiency and less power loss.
The utility model solves the technical problems by adopting the technical scheme that: the wall surface grinding machine adopting the novel brushless motor structure comprises a machine shell, a hollow handle arranged on the machine shell, a double-shaft motor arranged on the machine shell, a dust suction device and a controller arranged on the hollow handle, wherein a left fixed fork and a right fixed fork which are rotationally connected with the machine shell are arranged on one side, close to the machine shell, of the hollow handle;
the dust collection device comprises a dust collection box fixedly connected to the upper end of a shell, a rotating cavity is formed in the inner side of the dust collection box, an output shaft at the upper end of a double-shaft motor penetrates through the dust collection box and is fixedly connected with a suction fan positioned on the inner side of the rotating cavity, a partition plate which is connected to the inner side of the rotating cavity in a sealing mode through a screw is arranged at the upper end of the suction fan, the rotating cavity is divided into a suction cavity at the upper end and a discharge cavity at the lower end by the partition plate, an air inlet hole is formed in the center of the inner side of the partition plate, air inlet passages formed in the upper end of the partition plate are arranged on the left side and the right side of the air inlet hole, the air inlet holes and the air inlet passages are arranged in a sealing mode with the inner side of the upper end of the dust collection box, an air inlet joint positioned on the dust collection box is arranged on the outer side of the air inlet passage, an air outlet joint corresponding to the discharge cavity is arranged at the bottom of the discharge cavity, a clamping groove which is formed in the dust collection box and is arranged around the partition plate, a sealing baffle is arranged on the inner side of the clamping groove, the sealing baffle is clamped on the inner side of the partition plate, sucked dust can strike the sealing baffle on the outer side under the action of the heat dissipation fan, and after long-time use, only the corresponding sealing baffle is needed to be replaced, and the whole parts are not needed to be replaced, so that the service life of the device is greatly prolonged;
the dust collection device comprises a shell, a first folding pipe, a second folding pipe, a double-shaft motor, a polishing disc, a dust collection device, a dust collection fan, a hollow handle, a dust collection device, a dust collection fan, a dust collection device and a partition plate, wherein the left dust collection port and the right dust collection port are arranged on the inner side of the shell in a penetrating mode, the dust collection port is fixedly connected with the dust collection connector which is arranged on the outer side of the dust collection port, the first folding pipe is connected between the air inlet connector and the dust collection connector, the second folding pipe is connected between the air outlet connector and the hollow handle in a sealing mode, the double-shaft motor drives the polishing disc to rotate, the dust collection device at the upper end of the double-shaft motor is driven to work, the inside of the dust collection device is divided into an upper cavity and a lower cavity which are relatively sealed through the partition plate, and therefore dust collection operation can be better conducted by the suction fan.
For further perfection, biax motor front end is equipped with the supporting seat through screw fixed connection in motor cabinet upper end, the supporting seat front end is equipped with the back shaft, the back shaft outside rotates and is connected with the connecting seat, the connecting seat left and right sides is equipped with the center pin, around fixed fork rotates and connects in the center pin outside that corresponds, be equipped with the supporting seat of installing on the motor cabinet, fixed fork passes through the center pin and rotates the connecting seat outside of connecting both ends about the supporting seat, center pin and back shaft set up perpendicularly for this polisher can be in four directions about around in the use and carry out corresponding rotation, make this polisher more convenient when in-service use polishes.
Further perfectedly, the motor cabinet is equipped with the elasticity supporting legs all around, the inside sliding hole that opens of elasticity supporting legs, sliding connection has the guide post that is located the casing upper end in the sliding hole, guide post upper end threaded connection has the stop nut that avoids elasticity supporting legs to deviate from, the elasticity supporting legs lower extreme is equipped with the spring groove of opening in the guide post outside, the spring groove inboard is equipped with the reset spring that is located the guide post outside, the sealing ring that is located polishing tray all around is installed to the casing lower extreme, be equipped with the elasticity supporting legs that has service spring, at the during operation of polisher, the sealing ring in the polishing tray outside contacts with the wall earlier, drive biax motor through hollow handle to the wall and press for the dust after polishing the tray is all located the sealing ring, and in the quick suction dust collection box under the effect of dust collection joint, thereby avoid the polisher dust to fly upward when polishing.
Further perfects, the controller includes the shell of installing in the hollow handle outside, install the controller main part and fixed connection in the fixing base in the hollow handle outside of shell upper end, the shell inboard is equipped with the circuit board, fixing base lower extreme fixedly connected with and hollow handle laminate the radiating block that sets up mutually, the circuit board is located the radiating block lower extreme, both sides fixedly connected with and circuit board electric connection's power component around the radiating block, be equipped with the fixing base that fixedly wraps up in the hollow handle outside setting, the radiating block that sets up mutually with hollow handle is installed to the fixing base, and the power component laminating is installed at the radiating block surface, when using, the heat that power component produced is carried in the radiating block through heat transfer, the radiating block then with heat transfer to hollow handle in, because install dust extraction with a large amount of air and dust through inhaling in the hollow handle in the during operation, thereby the air flow speed in the hollow handle has been accelerated, thereby make hollow handle and inboard flow the heat exchange speed of air, thereby hollow handle gives the heat transfer for the air that flows, make the temperature of hollow handle reduce fast, greatly reduced the temperature of controller main part in the use, make the controller can last long-time work.
Further perfecting, the biax motor is including installing the frame on the motor cabinet, install the stator in the frame and be located the inboard rotor of stator, first skewed tooth gear installs in the rotor lower extreme outside, the radiator fan that is located the motor cabinet upper end is installed in the rotor lower extreme outside, the frame is including the seat of inhaling in the radiator fan outside and the radiator seat that is located the seat upside of inhaling, open the left and right sides of seat has the air outlet of being connected with radiator fan, be equipped with the separate layer of installing in the radiator seat inboard between radiator fan and the stator, the separate layer inboard central point puts and opens the passage way that is located the rotor outside, the radiator seat outside is equipped with a plurality of radiating fin that is connected with the seat upper end of inhaling, the radiating fin lower extreme is equipped with the air intake of opening in the radiator seat, the separate layer outside is opened there is the linking hole that is used for connecting air intake and radiator fan, be equipped with the radiator fan that is located the mill upper end, drive radiator fan through biax motor and rotate, thereby the air flow in the frame outside is accelerated from the frame outside is inhaled and is passed through to linking hole under radiator fan's effect, accelerate the air flow in frame outside and outside air, accelerate the heat transfer with outside air, finally, through the motor exhaust after the air outlet is with the air temperature when using the heat exchanger, thereby the heat dissipation speed is reduced in the engine.
Further perfecting, the protective housing is located the frame outside, the protective housing is including the safety cover that is located the frame outside and the air inlet cover that is located the safety cover upper end, be equipped with the air inlet chamber between safety cover and the frame, open the air inlet that has to be connected with the air inlet chamber in the air inlet cover upper end, be equipped with the safety cover, make radiator fan when rotating and absorb outside air, the air can only inhale through the safety cover upper end and flow down along air inlet chamber and fin, finally get into radiator fan through air inlet and linking hole, thereby make the mobilizable air of inhalant can be continuous contact with frame and fin, thereby make the in-process that outside air can be continuous follow frame and fin on the heat absorption, thereby make the temperature greatly reduced when the frame is used.
Further perfecting, the rotor is including installing the pivot of first skewed tooth gear, install the rotor core in the pivot outside and install a plurality of permanent magnet in the rotor core outside, the locating rack is installed to the rotor core, the locating rack outside is equipped with a plurality of evenly distributed's spacer bar, the permanent magnet sets up in the locating rack outside and is located between the spacer bar, both ends all are equipped with the spacing seat of installing in the rotor core outside about the permanent magnet, be equipped with the seamless steel pipe of parcel in the permanent magnet outside between the spacer bar about the spacing seat, the permanent magnet is spacing in the circumferencial direction, both ends pass through spacing seat spacing about the permanent magnet, and the outside parcel has thin wall seamless steel pipe, make the permanent magnet inside and outside receive spacingly, thereby guarantee that the fixed firm of permanent magnet is difficult for droing, and the permanent magnet outside is equipped with seamless steel pipe only, make the distance between rotor and the stator shorten greatly make the magnetic field stronger, the mechanical energy that the rotor produced when cutting magnetic induction line is bigger, make the torque of this biax motor of polishing disc bigger, thereby guarantee that this polishing disc and the suction fan of top can drive simultaneously when the work rotates, guarantee polishing and dust absorption effect.
The application method of the wall surface polishing machine adopting the novel brushless motor structure comprises the following steps:
1) Polishing: when the device works, the tail end of the hollow handle is connected with the dust collecting device, the double-shaft motor is started through the controller, the double-shaft motor works to drive the polishing disc in the shell to rotate, a user holds the hollow handle again to polish the wall surface to be polished, the polishing disc is firstly placed in parallel with the wall surface and gradually approaches the wall surface, the sealing ring is firstly contacted with the wall surface, then the motor seat is pressurized through the hollow handle, the motor seat drives the double-shaft motor and the polishing disc to pressurize one side of the wall surface, and accordingly the corresponding wall surface is polished;
2) Dust collection: during polishing, the sealing ring covers the outer side of the polishing disc and contacts with the wall surface, so that dust falling off during polishing of the polishing disc is covered in the sealing ring by the cage, and when the double-shaft motor works, the double-shaft motor drives the suction fan in the dust collection device to rotate, so that air with dust in the sealing ring is sucked into the dust collection box through the dust collection joint and the first folding pipe, enters the discharge cavity through the air inlet channel and the air inlet hole, is discharged into the hollow handle from the air outlet joint and the second folding pipe under the action of the suction fan, and finally, the dust is introduced into the dust collection device;
3) And (3) heat dissipation of the controller: the power element in the controller works and heats to transfer heat to the heat dissipation block, the heat dissipation block transfers the heat to the hollow handle attached to the heat dissipation block, and air with dust in the hollow handle exchanges heat with the hollow handle, so that the heat is carried out along with flowing air;
4) Heat dissipation of the motor: the double-shaft motor drives the cooling fan at the upper end of the motor base to rotate when in working rotation, so that air is sucked through the air suction port of the upper air inlet cover and flows downwards along the air inlet cavity, heat exchange is carried out between the double-shaft motor and the base and the cooling fins in the flowing process, after the heat exchange is finished, the air is sucked into the cooling fan of the air suction base through the air inlet and the connecting hole, and hot air is discharged out of the outside of the base from the air outlet through the cooling fan.
The beneficial effects of the utility model are as follows: the utility model has reasonable structural design, convenient use, more convenient disassembly and maintenance of the device, high transmission efficiency and smaller power loss, the double-shaft motor drives the grinding disc at the lower end and the suction fan in the upper end to rotate simultaneously, and the dust suction device is divided into an upper cavity and a lower cavity which are relatively closed by the partition plate, so that the suction fan can perform better dust suction operation, the device can perform better dust suction operation while polishing, and perform dust suction operation while polishing, thereby reducing dust pollution, simultaneously facilitating the use of the device and greatly increasing the working efficiency.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the mounting of the housing and the dual-shaft motor and suction device;
FIG. 3 is a top view of the housing;
FIG. 4 is a cross-sectional view of the housing and motor mount;
FIG. 5 is an exploded view of the dust extraction device;
FIG. 6 is a schematic diagram of the installation of a controller;
FIG. 7 is a cross-sectional view of the controller and hollow handle;
FIG. 8 is a schematic view of the mounting of a stationary fork and motor mount;
FIG. 9 is a schematic diagram of the installation of a dual-shaft motor;
FIG. 10 is a top view of the housing and protective cover;
FIG. 11 is an exploded view of a dual-shaft motor;
FIG. 12 is a schematic diagram of the installation of a dual-shaft motor;
FIG. 13 is a cross-sectional view of a dual-shaft motor;
fig. 14 is a schematic structural view of the elastic support leg.
Reference numerals illustrate: 1. the machine comprises a shell, 2, a hollow handle, 3, a double-shaft motor, 3-1, a machine base, 3-2, a stator, 3-3, a rotor, 3-4, a heat dissipation fan, 3-1-1, a suction seat, 3-1-2, a heat dissipation seat, 3-5, an air outlet, 3-6, a separation layer, 3-7, a channel hole, 3-8, a heat dissipation fin, 3-9, an air inlet, 3-10, a connecting hole, 4, a dust collection device, 4-1, a dust collection box, 4-2, a rotating cavity, 4-3, a suction fan, 4-4, a separation plate, 4-5, a suction cavity, 4-6, a discharge cavity, 4-7, an air inlet hole, 4-8, an air inlet channel, 4-9, an air inlet connector, 4-10, an air outlet connector, 5, a controller, 5-1, a shell, 5-2 and a controller main body, 5-4 parts of fixing seat, 5-3 parts of circuit board, 5-5 parts of heat dissipation block, 5-6 parts of power element, 6 parts of fixing fork, 7 parts of mounting hole, 8 parts of motor seat, 9 parts of motor seat, 10 parts of first bevel gear, 10 parts of second bevel gear, 11 parts of transmission shaft, 12 parts of limit bearing, 13 parts of sealing cover, 14 parts of grinding disc, 15 parts of protective shell, 15-1 parts of protective shell, 15-2 parts of protective shell, air inlet cover, 16 parts of dust collection opening, 17 parts of dust collection connector, 18 parts of first folding pipe, 19 parts of second folding pipe, 20 parts of support seat, 21 parts of support shaft, 22 parts of support shaft, 23 parts of connection seat, central shaft, 24 parts of air inlet cavity, 25 parts of air suction opening, 26 parts of rotation shaft, 27 parts of rotor core, 28 parts of permanent magnet, 29 parts of positioning frame, 30 parts of spacing bar, 31 parts of support seat, the device comprises a limiting seat, 32, a seamless steel tube, 33, elastic supporting feet, 34, a sliding hole, 35, a guide post, 36, a limiting nut, 37, a spring groove, 38, a return spring, 39, a sealing ring, 40, a clamping groove, 41 and a sealing baffle.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
referring to the drawings: the wall surface grinding machine adopting the novel brushless motor structure comprises a machine shell 1, a hollow handle 2 arranged on the machine shell 1, a double-shaft motor 3 arranged on the machine shell 1, a dust suction device 4 and a controller 5 arranged on the hollow handle 2, wherein a left fixed fork 6 and a right fixed fork 6 which are rotationally connected with the machine shell 1 are arranged on one side, close to the machine shell 1, of the hollow handle 2, a mounting hole 7 is formed in the center position of the inner side of the machine shell 1, a motor seat 8 fixedly connected to the outer side of the machine shell 1 through screws is arranged at the upper end of the mounting hole 7, the double-shaft motor 3 is fixedly connected to the upper end of the motor seat 8, an output shaft at the lower end of the double-shaft motor 3 is provided with a first bevel gear 9 which penetrates through the motor seat 8, the front side of the first bevel gear 9 is in meshed connection with a second bevel gear 10 which is positioned at the lower end of the motor seat 8, a transmission shaft 11 is arranged at the center position of the inner side of the second bevel gear 10, the upper end of the transmission shaft 11 is rotationally connected to the inner side of the motor seat 8, a limit bearing 12 which is arranged at the outer side of the transmission shaft 11 is arranged at the lower end of the second bevel gear 10, the lower end of the transmission shaft 8 is in threaded connection with a seal cover 13 which is positioned at the inner side of the mounting hole 7, the transmission shaft 13 is fixedly connected to the motor seat 13 which penetrates through the lower end of the motor seat 1 and is fixedly connected to the outer side 15 of the machine shell 1;
the dust collection device 4 comprises a dust collection box 4-1 fixedly connected to the upper end of the shell 1, a rotary cavity 4-2 is formed in the inner side of the dust collection box 4-1, an output shaft at the upper end of the double-shaft motor 3 penetrates through the dust collection box 4-1 and is fixedly connected with a suction fan 4-3 positioned at the inner side of the rotary cavity 4-2, a partition plate 4-4 which is connected to the inner side of the rotary cavity 4-2 through screws in a sealing mode is arranged at the upper end of the suction fan 4-3, the partition plate 4-4 divides the rotary cavity 4-2 into a suction cavity 4-5 at the upper end and a discharge cavity 4-6 at the lower end, an air inlet hole 4-7 is formed in the center of the inner side of the partition plate 4-4, air inlet channels 4-8 formed in the left side and the right side of the air inlet holes 4-7 and are arranged at the upper end of the partition plate 4-4 in a sealing mode, an air inlet joint 4-9 positioned on the outer side of the air inlet channels 4-8 and positioned on the dust collection box 4-1, an air outlet joint 4-10 corresponding to the discharge cavity 4-6 is arranged at the rear end of the partition plate 4-1, a baffle plate 4-40 is arranged at the bottom of the discharge cavity 4-5 in a clamping groove surrounding mode and is arranged on the inner side of the partition plate 4-4 in a sealing mode, and a baffle plate 41 is arranged on the inner side of the partition plate 4-4;
the inside of the machine shell 1 is provided with a left dust collection port 16 and a right dust collection port 16 which are arranged in a penetrating way, the upper end of the machine shell 1 is fixedly connected with a dust collection joint 17 which is positioned at the outer side of the dust collection port 16, a first folding pipe 18 is connected between an air inlet joint 4-9 and the dust collection joint 17, a second folding pipe 19 is connected between an air outlet joint 4-10 and the hollow handle 2 in a sealing way, the double-shaft motor 3 drives the polishing disc 14 to rotate and simultaneously drives a dust collection device 4 at the upper end of the double-shaft motor 3 to work, and the inside of the dust collection device 4 is divided into an upper cavity and a lower cavity which are relatively sealed through a partition plate 4-4, so that dust collection operation can be better carried out on the suction fan 4-3, and the device can carry out better dust collection operation when polishing.
As shown in fig. 8, the front end of the dual-shaft motor 3 is provided with a supporting seat 20 fixedly connected to the upper end of the motor base 8 through screws, the front end of the supporting seat 20 is provided with a supporting shaft 21, the outer side of the supporting shaft 21 is rotationally connected with a connecting seat 22, the left side and the right side of the connecting seat 22 are provided with central shafts 23, the front fixed fork 6 and the rear fixed fork 6 are rotationally connected to the outer sides of the corresponding central shafts 23, the supporting seat 20 mounted on the motor base 8 is provided with the connecting seats 22 which are rotationally connected to the left side and the right side of the supporting seat 20 through the central shafts 23, the central shafts 23 and the supporting shaft 21 are vertically arranged, and when the polishing machine is used, the hollow handle 2 can correspondingly rotate in the front, the rear, the left side and the right side of the hollow handle 2 is enabled to be more convenient when in actual use for polishing.
As shown in fig. 13, the motor base 8 is provided with elastic supporting feet 33 around, the inner side of the elastic supporting feet 33 is provided with sliding holes 34, the inner side of the sliding holes 34 is slidably connected with a guide post 35 positioned at the upper end of the casing 1, the upper end of the guide post 35 is in threaded connection with a limit nut 36 for preventing the elastic supporting feet 33 from falling out, the lower end of the elastic supporting feet 33 is provided with a spring groove 37 arranged at the outer side of the guide post 35, the inner side of the spring groove 37 is provided with a return spring 38 positioned at the outer side of the guide post 35, the lower end of the casing 1 is provided with a sealing ring 39 positioned around the grinding disc 14, the elastic supporting feet 33 with service springs 38 are provided, when the grinding machine works, the sealing ring 39 at the outer side of the grinding disc 14 is firstly contacted with a wall surface, and the hollow handle 2 drives the biaxial motor 3 to press the wall surface, so that dust after the grinding disc 14 is positioned in the sealing ring 39 and is sucked into the dust suction box 4-1 under the effect of the dust suction joint 17, thereby avoiding dust flying during grinding.
As shown in fig. 6 and 7, the controller 5 comprises a housing 5-1 installed at the outer side of the hollow handle 2, a controller main body 5-2 installed at the upper end of the housing 5-1, and a fixing seat 5-4 fixedly connected to the outer side of the hollow handle 2, wherein a circuit board 5-3 is arranged at the inner side of the housing 5-1, a heat dissipation block 5-5 fixedly connected to the lower end of the fixing seat 5-4 is arranged at the position, which is fixedly connected to the front side and the rear side of the heat dissipation block 5-3, of the circuit board 5-6, a power element 5-6 is fixedly connected to the circuit board 5-3, a fixing seat 5-4 fixedly wrapped at the outer side of the hollow handle 2 is arranged, the fixing seat 5-4 is provided with the heat dissipation block 5-5 fixedly wrapped at the outer side of the hollow handle 2, and the power element 5-6 is fixedly installed at the outer surface of the heat dissipation block 5-5.
As shown in fig. 9, 10 and 11, the biaxial motor 3 comprises a base 3-1 mounted on a motor base 8, a stator 3-2 mounted in the base 3-1 and a rotor 3-3 positioned on the inner side of the stator 3-2, a first helical gear 9 is mounted on the outer side of the lower end of the rotor 3-3, a cooling fan 3-4 positioned on the upper end of the motor base 8 is mounted on the outer side of the lower end of the rotor 3-3, the base 3-1 comprises a suction base 3-1-1 positioned on the outer side of the cooling fan 3-4 and a cooling base 3-1-2 positioned on the upper side of the suction base 3-1, air outlets 3-5 connected with the cooling fan 3-4 are arranged on the left and right sides of the suction base 3-1-1, a separation layer 3-6 arranged on the inner side of the heat radiating seat 3-1-2 is arranged between the heat radiating fan 3-4 and the stator 3-2, a channel hole 3-7 positioned on the outer side of the rotor 3-3 is arranged in the center position of the inner side of the separation layer 3-6, a plurality of heat radiating fins 3-8 connected with the upper end of the air suction seat 3-1 are arranged on the outer side of the heat radiating seat 3-1-2, an air inlet 3-9 arranged in the heat radiating seat 3-1-2 is arranged at the lower end of the heat radiating fins 3-8, a connecting hole 3-10 used for connecting the air inlet 3-9 and the heat radiating fan 3-4 is arranged on the outer side of the separation layer 3-6, the heat radiating fan 3-4 positioned on the upper end of the polishing disc 14 is arranged, the heat radiating fan 3-4 is driven to rotate by the double-shaft motor 3, thereby, the outside air is sucked from the outer side of the machine base 3-1 under the action of the cooling fan 3-4 and enters the cooling fan 3-4 through the air inlet 3-9 and the connecting hole 3-10, so that the air flow of the outer side of the machine base 3-1 is quickened, the heat transfer between the machine base 3-1 and the cooling fins 3-8 and the outside air is quickened, finally, the air after the heat transfer is discharged through the air outlet 3-5, thereby quickening the heat dissipation speed of the machine base 3-1 and reducing the using temperature of the double-shaft motor 3 in use.
As shown in fig. 2 and 10, the protective housing 15 is located outside the machine base 3-1, the protective housing 15 includes a protective housing 15-1 located outside the machine base 3-1 and an air inlet cover 15-2 located at the upper end of the protective housing 15-1, an air inlet cavity 24 is provided between the protective housing 15-1 and the machine base 3-1, an air inlet 25 connected with the air inlet cavity 24 is provided at the upper end of the air inlet cover 15-2, and the protective housing 15-1 is provided, so that when the cooling fan 3-4 rotates to absorb external air, air can only be sucked through the upper end of the protective housing 15-1 and flow downwards along the air inlet cavity 24 and the cooling fins 3-8, and finally enters the cooling fan 3-4 through the air inlet 3-9 and the connecting holes 3-10, thereby enabling sucked flowing air to continuously contact with the machine base 3-1 and the cooling fins 3-8, thereby enabling the external air to continuously absorb heat from the machine base 3-1 and the cooling fins 3-8 in the flowing process, and greatly reducing the temperature of the machine base when in use.
As shown in fig. 11, 12 and 13, the rotor 3-3 includes the pivot 26 of installing first skewed tooth gear 9, install the rotor core 27 in the pivot 26 outside and install a plurality of permanent magnet 28 in the rotor core 27 outside, the locating rack 29 is installed to the rotor core 27, the locating rack 29 outside is equipped with a plurality of evenly distributed spacer bar 30, the permanent magnet 28 sets up in the locating rack 29 outside and is located between the spacer bar 30, both ends all are equipped with the spacing seat 31 of installing in the rotor core 27 outside about the permanent magnet 28, be equipped with the seamless steel pipe 32 of parcel in the permanent magnet 28 outside between the spacing bar 30 about the spacing seat 31, the permanent magnet 28 obtains spacingly in the circumferencial direction, the upper and lower both ends of permanent magnet 28 pass through spacing seat 31, and the outside parcel has thin wall seamless steel pipe 32, make the inside and outside of permanent magnet 28 receive spacingly, thereby guarantee that the fixed firm of permanent magnet 28 is difficult for droing, and the permanent magnet 28 outside is equipped with only seamless steel pipe 32, make the distance between rotor 3-3 and stator 3-2 shorten greatly and make the magnetic field strong, the mechanical energy that produces when rotor 3-1 cuts the magnetic induction line is bigger, make this motor 14 more and the rotational torque of the grinding wheel 3-3 and the side of this motor can be guaranteed to rotate in the side of the grinding and the side 3-1 when the fan 3-1 rotates more and the side is guaranteed to rotate and the rotational moment is guaranteed to the side 3-is more when the grinding and is guaranteed and the side is 3-is guaranteed.
The application method of the wall surface polishing machine adopting the novel brushless motor structure comprises the following steps:
1) Polishing: when the device works, the tail end of the hollow handle 2 is connected with the dust collecting device, the double-shaft motor 3 is started through the controller 5, the double-shaft motor 3 works to drive the polishing disc 14 in the shell 1 to rotate, a user holds the hollow handle 2 again to polish a wall surface to be polished, the polishing disc 14 is firstly placed in parallel with the wall surface and gradually approaches the wall surface when in use, the sealing ring 39 is firstly contacted with the wall surface, then the motor seat 8 is pressurized through the hollow handle 2, and the motor seat 8 drives the double-shaft motor 3 and the polishing disc 14 to pressurize one side of the wall surface, so that the corresponding wall surface is polished;
2) Dust collection: during polishing, the sealing ring 39 is covered on the outer side of the polishing disc 14 to be in contact with a wall surface, so that dust falling from polishing of the polishing disc 14 is covered in the sealing ring 39 by a cage, and when the double-shaft motor 3 works, the double-shaft motor 3 drives the suction fan 4-3 in the dust collection device 4 to rotate, so that air with dust in the sealing ring 39 is sucked into the dust collection box 4-1 through the dust collection joint 17 and the first folding pipe 18, enters the discharge cavity 4-6 through the air inlet channel 4-8 and the air inlet hole 4-7, is discharged into the hollow handle 2 from the air outlet joint 4-10 and the second folding pipe 19 under the action of the suction fan 4-3, and finally, the dust is introduced into the dust collection device;
3) And (3) heat dissipation of the controller: the power element 5-6 in the controller 5 works and heats to transfer heat to the heat dissipation block 5-5, the heat dissipation block 5-5 transfers the heat to the hollow handle 2 attached to the heat dissipation block 5-5, and air with dust in the hollow handle 2 exchanges heat with the hollow handle 2, so that the heat is carried out along with the flowing air;
4) Heat dissipation of the motor: the double-shaft motor 3 drives the cooling fan 3-4 at the upper end of the motor base 8 to rotate when in operation and rotation, so that air is sucked through the air suction port 25 of the upper air inlet cover 15-2 and flows downwards along the air inlet cavity 24, heat exchange is carried out between the double-shaft motor 3 and the base 3-1 and the cooling fins 3-8 in the flowing process, after the exchange is finished, the air is sucked into the cooling fan 3-4 of the air suction base 3-1 through the air suction port 3-9 and the connecting hole 3-10, and hot air is discharged out of the base 3-1 from the air outlet 3-5 through the cooling fan 3-4.
While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.
Claims (7)
1. The utility model provides an adopt novel brushless motor structure's wall polisher, includes casing (1), installs hollow handle (2) on casing (1), installs biax motor (3) on casing (1), dust extraction (4) and installs controller (5) on hollow handle (2), two fixed fork (6) of being connected with casing (1) rotation are installed about one side that hollow handle (2) is close to casing (1), characterized by: the novel double-shaft motor is characterized in that a mounting hole (7) is formed in the center position of the inner side of the casing (1), a motor base (8) fixedly connected to the outer side of the casing (1) through a screw is arranged at the upper end of the mounting hole (7), a first helical gear (9) penetrating through the motor base (8) is mounted on an output shaft of the lower end of the double-shaft motor (3), a second helical gear (10) located at the lower end of the motor base (8) is connected to the front side of the first helical gear (9) in a meshed mode, a transmission shaft (11) is mounted at the center position of the inner side of the second helical gear (10), the upper end of the transmission shaft (11) is rotatably connected to the inner side of the lower end of the motor base (8), a limit bearing (12) mounted at the outer side of the transmission shaft (11) is arranged at the lower end of the second helical gear (10), a sealing cover (13) located at the inner side of the mounting hole (7) is connected to the lower end of the motor base (8) in a threaded mode, a polishing motor (14) located at the lower end of the motor base (1) is fixedly connected to the lower end of the sealing cover (13), and the outer side of the motor base (3) is fixedly connected to the outer side of the motor base (8);
the dust collection device (4) comprises a dust collection box (4-1) fixedly connected to the upper end of a shell (1), a rotary cavity (4-2) is formed in the inner side of the dust collection box (4-1), an output shaft at the upper end of the double-shaft motor (3) penetrates through the dust collection box (4-1) and is fixedly connected with a suction fan (4-3) positioned at the inner side of the rotary cavity (4-2), a separation plate (4-4) which is hermetically connected to the inner side of the rotary cavity (4-2) through a screw is arranged at the upper end of the suction fan (4-3), the separation plate (4-4) divides the rotary cavity (4-2) into a suction cavity (4-5) at the upper end and a discharge cavity (4-6) at the lower end, an air inlet hole (4-7) is formed in the center position of the inner side of the separation plate (4-4), an air inlet channel (4-8) formed in the left side and the right side of the separation plate (4-7), the air inlet hole (4-7) and the air inlet channel (4-8) are hermetically arranged at the inner side of the upper end of the dust collection box (4-1), a dust collection joint (4-9) is arranged at the outer side of the dust collection box (4-1), the rear end of the dust collection box (4-1) is provided with an air outlet connector (4-10) corresponding to the discharge cavity (4-6), the bottom of the discharge cavity (4-5) is provided with a clamping groove (40) which is arranged on the dust collection box (4-1) and surrounds the partition plate (4-4), the inner side of the clamping groove (40) is provided with a sealing baffle plate (41), and the upper end of the sealing baffle plate (41) is clamped on the inner side of the partition plate (4-4);
the inner side of the shell (1) is provided with a left dust collection opening (16) and a right dust collection opening (16) which are arranged in a penetrating way, the upper end of the shell (1) is connected with a dust collection joint (17) positioned at the outer side of the dust collection opening (16), a first folding pipe (18) is connected between the air inlet joint (4-9) and the dust collection joint (17), and a second folding pipe (19) is connected between the air outlet joint (4-10) and the hollow handle (2) in a sealing way; the controller (5) comprises a shell (5-1) arranged on the outer side of the hollow handle (2), a controller main body (5-2) arranged at the upper end of the shell (5-1) and a fixing seat (5-4) fixedly connected to the outer side of the hollow handle (2), a circuit board (5-3) is arranged on the inner side of the shell (5-1), a radiating block (5-5) which is fixedly connected to the lower end of the fixing seat (5-4) and is arranged in a manner of being attached to the hollow handle (2), the circuit board is positioned at the lower end of the radiating block (5-3), and power elements (5-6) which are electrically connected with the circuit board (5-3) are fixedly connected to the front side and the rear side of the radiating block (5-5).
2. The wall surface grinding machine adopting the novel brushless motor structure as claimed in claim 1, wherein: the front end of the double-shaft motor (3) is provided with a supporting seat (20) fixedly connected with the upper end of the motor seat (8) through screws, the front end of the supporting seat (20) is provided with a supporting shaft (21), the outer side of the supporting shaft (21) is rotationally connected with a connecting seat (22), the left side and the right side of the connecting seat (22) are provided with central shafts (23), and the front and the rear of the fixed fork (6) are rotationally connected with the outer sides of the corresponding central shafts (23).
3. The wall surface grinding machine adopting the novel brushless motor structure as claimed in claim 1, wherein: the motor cabinet (8) is equipped with elasticity supporting legs (33) all around, and slide hole (34) are opened to elasticity supporting legs (33) inboard, and slide hole (34) inboard sliding connection has and is located guide post (35) of casing (1) upper end, guide post (35) upper end threaded connection has stop nut (36) that avoid elasticity supporting legs (33) to deviate from, elasticity supporting legs (33) lower extreme is equipped with and opens spring groove (37) in guide post (35) outside, spring groove (37) inboard is equipped with reset spring (38) that are located guide post (35) outside, be located casing (1) lower extreme sealing ring (39) around polishing dish (14).
4. A wall surface grinding machine adopting a novel brushless motor structure as defined in claim 3, wherein: the double-shaft motor (3) comprises a base (3-1) arranged on the motor base (8), a stator (3-2) arranged in the base (3-1) and a rotor (3-3) arranged on the inner side of the stator (3-2), a first helical gear (9) is arranged on the outer side of the lower end of the rotor (3-3), a cooling fan (3-4) arranged on the upper end of the motor base (8) is arranged on the outer side of the lower end of the rotor (3-3), the base (3-1) comprises a suction base (3-1-1) arranged on the outer side of the cooling fan (3-4) and a cooling base (3-1-2) arranged on the upper side of the suction base (3-1-1), air outlets (3-5) connected with the cooling fan (3-4) are formed in the left side and the right side of the suction base (3-1), a separation layer (3-6) arranged between the fan (3-4) and the stator (3-2) and provided with a separation layer (3-6) arranged on the outer side of the cooling base (3-1-2), the separation layer (3-6) is arranged on the outer side of the separation layer (3-6), the cooling seat (3-1-2) is provided with a plurality of cooling fins (3-8) connected with the upper end of the air suction seat (3-1), the lower end of each cooling fin (3-8) is provided with an air inlet (3-9) arranged in the cooling seat (3-1-2), and the outer side of the separation layer (3-6) is provided with a connecting hole (3-10) for connecting the air inlet (3-9) with the cooling fan (3-4).
5. The wall surface grinding machine adopting the novel brushless motor structure as claimed in claim 4, wherein: the protection shell (15) is located the frame (3-1) outside, and protection shell (15) are including being located the safety cover (15-1) in the frame (3-1) outside and being located air inlet cover (15-2) of safety cover (15-1) upper end, be equipped with air inlet chamber (24) between safety cover (15-1) and frame (3-1), open air inlet cover (15-2) upper end have with air inlet chamber (24) connected induction port (25).
6. The wall surface grinding machine adopting the novel brushless motor structure as claimed in claim 4, wherein: the rotor (3-3) comprises a rotating shaft (26) provided with a first helical gear (9), a rotor core (27) arranged on the outer side of the rotating shaft (26) and a plurality of permanent magnets (28) arranged on the outer side of the rotor core (27), wherein a positioning frame (29) is arranged on the rotor core (27), a plurality of uniformly distributed spacing bars (30) are arranged on the outer side of the positioning frame (29), the permanent magnets (28) are arranged on the outer side of the positioning frame (29) and between the spacing bars (30), limiting seats (31) arranged on the outer side of the rotor core (27) are respectively arranged at the upper end and the lower end of each permanent magnet (28), and seamless steel pipes (32) wrapped on the outer side of the permanent magnets (28) are arranged between the limiting seats (31).
7. The method of using a wall surface grinder using a novel brushless motor structure according to claim 5, comprising the steps of:
1) Polishing: when the novel double-shaft polishing machine works, the tail end of the hollow handle (2) is connected with the dust collecting device, the double-shaft motor (3) is started through the controller (5), the double-shaft motor (3) works to drive the polishing disc (14) in the casing (1) to rotate, a user holds the hollow handle (2) again to polish a wall surface to be polished, the polishing disc (14) is placed in parallel with the wall surface and gradually approaches the wall surface when in use, the sealing ring (39) is contacted with the wall surface firstly, then the motor base (8) is pressurized through the hollow handle (2), and the motor base (8) drives the double-shaft motor (3) and the polishing disc (14) to pressurize one side of the wall surface, so that the corresponding wall surface is polished;
2) Dust collection: during polishing, the sealing ring (39) is covered on the outer side of the polishing disc (14) to be in contact with a wall surface, so that dust falling off during polishing of the polishing disc (14) is covered in the sealing ring (39) by a cage, and when the double-shaft motor (3) works, the double-shaft motor (3) drives an air suction fan (4-3) in the dust suction device (4) to rotate, so that air with dust in the sealing ring (39) is sucked into the dust suction box (4-1) through the dust suction connector (17) and the first folding pipe (18), enters the discharge cavity (4-6) through the air inlet channel (4-8) and the air inlet hole (4-7), is discharged into the hollow handle (2) from the air outlet connector (4-10) and the second folding pipe (19) under the action of the air suction fan (4-3), and finally, the dust is introduced into the dust collection device;
3) And (3) heat dissipation of the controller: the power element (5-6) in the controller (5) works and heats to transfer heat to the heat dissipation block (5-5), the heat dissipation block (5-5) transfers the heat to the hollow handle (2) attached to the heat dissipation block (5-5), and air with dust in the hollow handle (2) exchanges heat with the hollow handle (2), so that the heat is carried out along with the flowing air;
4) Heat dissipation of the motor: the double-shaft motor (3) drives a cooling fan (3-4) at the upper end of the motor base (8) to rotate when working and rotating, so that air is sucked through an air suction port (25) of an upper air inlet cover (15-2) and flows downwards along an air inlet cavity (24), heat exchange is carried out between the double-shaft motor and the base (3-1) and the cooling fins (3-8) in the flowing process, after the exchange is finished, the air is sucked into the cooling fan (3-4) of the air suction base (3-1) through an air inlet (3-9) and a connecting hole (3-10), and hot air is discharged out of the outside of the base (3-1) from an air outlet (3-5) through the cooling fan (3-4).
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| CN202210524429.5A CN114986288B (en) | 2022-05-13 | 2022-05-13 | Wall surface grinding machine adopting novel brushless motor structure and application method thereof |
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| CN202210524429.5A CN114986288B (en) | 2022-05-13 | 2022-05-13 | Wall surface grinding machine adopting novel brushless motor structure and application method thereof |
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| JP3233313U (en) * | 2020-11-26 | 2021-08-05 | 武漢慧達電子科技有限公司Ｗｕｈａｎ Ｓｍａｒｔｄａ Ｅｌｅｃｔｒｏｎｉｃ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ． | Air filling / dust collecting integrated equipment |
| CN215186169U (en) * | 2021-03-25 | 2021-12-14 | 松下家电(中国)有限公司 | Hand-held electric appliance |
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| US10786894B2 (en) * | 2015-10-14 | 2020-09-29 | Black & Decker Inc. | Brushless motor system for power tools |
| EP3974657A3 (en) * | 2020-09-29 | 2022-06-15 | Shanghai Chuanyu Technologies Ltd., Co | Impeller assembly and cutting equipment provided with impeller assembly |
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| AU2009262337A1 (en) * | 2008-06-23 | 2009-12-30 | Alan Thomas Peake | Finishing machine |
| CN105127853A (en) * | 2014-05-30 | 2015-12-09 | 浙江绿动电机科技有限公司 | Wall surface grinding machine |
| CN204565813U (en) * | 2014-12-25 | 2015-08-19 | 王文财 | A kind of wall sander |
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| JP3233313U (en) * | 2020-11-26 | 2021-08-05 | 武漢慧達電子科技有限公司Ｗｕｈａｎ Ｓｍａｒｔｄａ Ｅｌｅｃｔｒｏｎｉｃ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ． | Air filling / dust collecting integrated equipment |
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| CN114986288A (en) | 2022-09-02 |
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