CN114986288A - Wall surface grinding machine adopting novel brushless motor structure and using method thereof - Google Patents

Wall surface grinding machine adopting novel brushless motor structure and using method thereof Download PDF

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Publication number
CN114986288A
CN114986288A CN202210524429.5A CN202210524429A CN114986288A CN 114986288 A CN114986288 A CN 114986288A CN 202210524429 A CN202210524429 A CN 202210524429A CN 114986288 A CN114986288 A CN 114986288A
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China
Prior art keywords
motor
air inlet
casing
seat
air
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Granted
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CN202210524429.5A
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Chinese (zh)
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CN114986288B (en
Inventor
刘剑光
魏强
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Zhejiang Lorenz Motor Technology Co ltd
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Zhejiang Lorenz Motor Technology Co ltd
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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

一种采用新型无刷电机结构的墙面打磨机，包括机壳、安装在机壳上的空心手柄、安装在机壳上的双轴电机、吸尘装置和安装在空心手柄上的控制器，空心手柄靠近机壳的一侧安装有左右两个与机壳连接的固定叉，机壳内侧中心位置开有安装孔，安装孔上端设有固定连接在机壳外侧的电机座，双轴电机安装在电机座上端，双轴电机下端的输出轴安装有第一斜齿齿轮，第一斜齿齿轮前侧设有第二斜齿齿轮，第二斜齿齿轮内侧中心位置安装有传动轴，传动轴上端转动连接在电机座下端内侧，第二斜齿齿轮下端设限位轴承，电机座下端设有密封盖，传动轴下端穿过密封盖固定连接有位于机壳下端的打磨盘，双轴电机外侧设有固定连接在电机座上端的保护壳。

Figure 202210524429

A wall grinder with a novel brushless motor structure, comprising a casing, a hollow handle mounted on the casing, a dual-shaft motor mounted on the casing, a dust collector and a controller mounted on the hollow handle, The side of the hollow handle close to the casing is installed with two left and right fixed forks that are connected to the casing. There is a mounting hole in the center of the inner side of the casing. The upper end of the mounting hole is provided with a motor seat that is fixedly connected to the outside of the casing. The dual-axis motor is installed On the upper end of the motor base, a first helical gear is installed on the output shaft of the lower end of the dual-shaft motor, a second helical gear is installed on the front side of the first helical gear, and a transmission shaft is installed at the inner center of the second helical gear. The upper end is rotatably connected to the inner side of the lower end of the motor seat, the lower end of the second helical gear is provided with a limit bearing, the lower end of the motor seat is provided with a sealing cover, and the lower end of the transmission shaft is fixedly connected to the grinding disc at the lower end of the casing through the sealing cover. There is a protective shell fixedly connected to the upper end of the motor base.

Figure 202210524429

Description

Wall surface grinding machine adopting novel brushless motor structure and using method thereof
Technical Field
The invention 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 polisher is an electric tool which takes electric power as power to drive an abrasive sheet on an end surface of an abrasive disc to rotate at a high speed to polish and clean a wall surface.
A wall polisher disclosed as patent application No. CN201820959374.X relates to the field of polishing equipment, and comprises: the device comprises an outer polishing disc, an inner polishing disc, a linkage part, a transmission part, a driving part and a handheld part; the outer grinding disc and the inner grinding disc are coaxially arranged; 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 rotate reversely; 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 hand-held part is fixed on the driving part, and the wall surface grinding machine of the utility model offsets most of torsion force through the design of bidirectional rotation, so that a user can save more labor in the use process and can grind the wall surface more smoothly and finely; through the design of impeller, make the dust that the polisher can better collect the production of polishing at the in-process of polishing.
However, the motor transmission part of the sander disclosed above is complicated in structure, troublesome in assembly, increased in volume of the equipment connection part, troublesome in maintenance and replacement, low in transmission efficiency, and large in power loss.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a wall surface grinding machine adopting a 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 invention adopts the technical scheme for solving the technical problems 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 of the hollow handle close to the machine shell, a mounting hole is formed in the central position of the inner side of the machine shell, a motor seat fixedly connected to the outer side of the machine shell through a screw is arranged at the upper end of the mounting hole, the double-shaft motor is fixedly connected to the upper end of the motor seat, a first helical gear penetrating through the motor seat is arranged on an output shaft at the lower end of the double-shaft motor, a second helical gear positioned at the lower end of the motor seat is connected to the front side of the first helical gear in a meshing manner, a transmission shaft is arranged at the central position of the inner side of the second helical gear, the upper end of the transmission shaft is rotationally connected to the inner side of the lower end of the motor seat, and a limit bearing arranged on the outer side of the transmission shaft is arranged at the lower end of the second helical gear, the lower end of the motor base is in threaded connection with a sealing cover positioned on the inner side of the mounting hole, the lower end of the transmission shaft penetrates through the sealing cover and is fixedly connected with a polishing disc positioned on the lower end of the machine shell, and a protective shell fixedly connected to the upper end of the motor base is arranged on the outer side of the double-shaft motor;
the dust suction device comprises a dust suction box fixedly connected to the upper end of a machine shell, a rotating cavity is formed in the inner side of the dust suction box, an output shaft at the upper end of a double-shaft motor penetrates through the dust suction box and is fixedly connected with a suction fan positioned in the inner side of the rotating cavity, a partition plate connected to the inner side of the rotating cavity in a sealing manner 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 channels formed in the upper end of the partition plate are arranged on the left side and the right side of the air inlet hole in a sealing manner, an air inlet joint positioned on the dust suction box is arranged on the outer side of the air inlet channel, an air outlet joint corresponding to the discharge cavity is arranged at the rear end of the dust suction box, a clamping groove formed in the dust suction box and arranged around the partition plate is formed in the inner side of the clamping groove, and the upper end of the sealing baffle is clamped in the inner side of the partition plate, the sucked dust can impact the sealing baffle on the outer side under the action of the cooling fan, and after the device is used for a long time, only the corresponding sealing baffle needs to be replaced without replacing the whole part, so that the service life of the device is greatly prolonged;
two dust absorption mouths that run through the setting about the casing inboard is opened, casing upper end fixedly connected with is located the dust absorption joint in the dust absorption mouth outside, be connected with first folding pipe between air inlet joint and the dust absorption joint, sealing connection has the second folding pipe between air outlet joint and the hollow handle, the biax motor drives the dust extraction that drives the biax motor upper end simultaneously and carries out work, two upper and lower relative confined cavitys are divided into through the division board in the dust extraction, thereby can be better carry out the dust absorption operation at the suction fan, make the device can carry out better dust absorption operation when polishing.
In order to further perfect, the biax motor front end is equipped with the supporting seat of through screw fixed connection in the motor cabinet upper end, the supporting seat front end is equipped with the back shaft, the back shaft outside is rotated and is connected with the connecting seat, the connecting seat left and right sides is equipped with the center pin, front and back fixed fork rotates the connection in corresponding center pin outside, 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, make this polisher when using the time hand shank of heart can carry out corresponding rotation in four directions about in the front, make this polisher more convenient when in-service use is polished.
Further perfect, the motor cabinet is equipped with the elastic support foot all around, elastic support foot inboard is opened there is the slip hole, slip downthehole side sliding connection has the guide post that is located the casing upper end, guide post upper end threaded connection has the stop nut of avoiding the elastic support foot to deviate from, the elastic support foot lower extreme is equipped with opens the spring groove in the guide post outside, spring inslot side is equipped with the reset spring who is located the guide post outside, the casing lower extreme is installed and is located polishing dish sealing ring all around, be equipped with the elastic support foot that has the service spring, at polisher during operation, the sealing ring in the polishing dish outside contacts with the wall earlier, it presses to the wall to drive double-shaft motor through hollow handle, make the dust after polishing dish is polished all located the sealing ring, and in the quick suction dust absorption box under the effect that the dust absorption connects, thereby avoid the polisher when polishing dust flies upward.
Further perfection, the controller comprises a shell arranged at the outer side of the hollow handle, a controller main body arranged at the upper end of the shell and a fixed seat fixedly connected at the outer side of the hollow handle, a circuit board is arranged at the inner side of the shell, the lower end of the fixed seat is fixedly connected with a radiating block which is jointed with the hollow handle, the circuit board is arranged at the lower end of the radiating block, the front side and the rear side of the radiating block are fixedly connected with a power element which is electrically connected with the circuit board, the fixed seat fixedly wrapped at the outer side of the hollow handle is provided with the radiating block which is jointed with the hollow handle, the power element is jointed and arranged at the outer surface of the radiating block, when in use, the heat generated by the power element is transmitted into the radiating block through heat transmission, the radiating block transmits the heat into the hollow handle, and because the dust collection device is modified to suck a large amount of air and dust into the hollow handle when in work, thereby the air flow speed in the hollow handle has been accelerated to make the hollow handle accelerate with the heat exchange rate of the inboard air that flows, thereby hollow handle gives the mobile air with heat transfer, makes the temperature of hollow handle reduce fast, greatly reduced the temperature of controller main part in the use, make the controller can last the work of carrying out of temperature for a long time.
The double-shaft motor comprises a base arranged on a motor base, a stator arranged in the base and a rotor positioned on the inner side of the stator, a first helical gear is arranged on the outer side of the lower end of the rotor, a radiating fan positioned on the upper end of the motor base is arranged on the outer side of the lower end of the rotor, the base comprises an air suction base positioned on the outer side of the radiating fan and a radiating base positioned on the upper side of the air suction base, air outlets connected with the radiating fan are formed in the left side and the right side of the air suction base, a separating layer arranged on the inner side of the radiating base is arranged between the radiating fan and the stator, a channel hole positioned on the outer side of the rotor is formed in the center position of the inner side of the separating layer, a plurality of radiating fins connected with the upper end of the air suction base are arranged on the outer side of the radiating base, an air inlet arranged in the radiating base is formed at the lower end of the radiating fins, an engagement hole used for connecting the air inlet and the radiating fan is formed in the outer side of the separating layer, and the radiating fan positioned on a polishing disc, drive radiator fan through the biax motor and rotate to inhale external air from the frame outside and through air intake and linkage hole entering radiator fan under radiator fan's effect in, thereby accelerate the air flow in the frame outside, accelerate the heat transfer of frame and radiating fin and external air, discharge the air after the heat transfer through the air outlet at last, thereby accelerate the radiating rate of frame, reduce the service temperature of biax motor when using.
The protective housing is located on the outer side of the base and comprises a protective cover located on the outer side of the base and an air inlet cover located at the upper end of the protective cover, an air inlet cavity is formed between the protective cover and the base, an air suction port connected with the air inlet cavity is formed in the upper end of the air inlet cover, the protective cover is arranged, when the cooling fan rotates to absorb outside air, the air can only be sucked through the upper end of the protective cover and flows downwards along the air inlet cavity and the cooling fins to finally enter the cooling fan through the air inlet and the connecting holes, and accordingly sucked flowing air can be continuously contacted with the base and the cooling fins, heat absorption can be continuously carried out on the outside air from the base and the cooling fins in the flowing process, and the temperature of the base is greatly reduced when the base is used.
Further perfection, the rotor comprises a rotating shaft provided with a first helical gear, a rotor iron core arranged on the outer side of the rotating shaft and a plurality of permanent magnets arranged on the outer side of the rotor iron core, the rotor iron core is provided with a positioning frame, the outer side of the positioning frame is provided with a plurality of evenly distributed spacing bars, the permanent magnets are arranged on the outer side of the positioning frame and positioned between the spacing bars, the upper end and the lower end of each permanent magnet are respectively provided with a limiting seat arranged on the outer side of the rotor iron core, a seamless steel pipe wrapped on the outer side of each permanent magnet is arranged between the upper limiting seat and the lower limiting seat, the permanent magnets are limited in the circumferential direction, the upper end and the lower end of each permanent magnet are limited through the limiting seats, and the outer sides of the permanent magnets are wrapped by thin-walled seamless steel pipes, so that the inner side and the outer side of each permanent magnet are limited, the fixation of each permanent magnet is firm and not easy to fall off, and the seamless steel pipes are only arranged on the outer sides of the permanent magnets, so that the distance between the rotor and the stator is greatly shortened, and the magnetic field is stronger, the mechanical energy that produces when rotor cutting magnetic induction line is big for this make the double-shaft motor's of polishing dish torque is bigger, thereby guarantees this can drive the polishing dish of below and the fan of breathing in of top simultaneously and rotate when work rotates, guarantees to polish and dust absorption effect.
A use method of a wall surface grinding machine adopting a novel brushless motor structure comprises the following steps:
1) polishing: when the double-shaft motor is used, the polishing disc is placed in parallel with the wall and gradually approaches to the wall, so that the sealing ring is firstly contacted with the wall, and then the motor base is pressurized through the hollow handle, so that the motor base drives the double-shaft motor and the polishing disc to pressurize one side of the wall, and the corresponding wall is polished;
2) dust collection: during polishing, the sealing ring covers the outer side of the polishing disc and is in contact with the wall surface, so that dust falling after 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 suction device to rotate, so that air with dust in the sealing ring is sucked into the dust suction box through the dust suction connector 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 connector and the second folding pipe under the action of the suction fan, and finally is introduced into the dust collection device;
3) the controller dissipates heat: the power element in the controller works to generate heat and transmit the heat into the heat dissipation block, the heat dissipation block transmits 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 taken out along with flowing air;
4) the motor dissipates heat: when the double-shaft motor works and rotates, the heat radiation fan at the upper end of the motor base is driven to rotate, so that air is sucked through an air suction port of the upper air inlet cover and flows downwards along the air inlet cavity, heat exchange is carried out between the air and the motor base and the heat radiation fins in the flowing process, the air is sucked into the heat radiation fan of the air suction base through the air inlet and the connecting hole after the heat exchange is finished, and hot air is discharged out of the outer side of the motor base from the air outlet through the heat radiation fan.
The invention has the beneficial effects that: the dust suction device is reasonable in structural design, convenient to use, more convenient to disassemble and maintain, high in transmission efficiency and less in power loss, the lower grinding disc and the upper suction fan are driven to rotate simultaneously through the double-shaft motor, the interior of the dust suction device is divided into an upper cavity and a lower cavity which are relatively closed through the partition plate, so that the dust suction fan can better perform dust suction operation, the dust suction device can perform better dust suction operation while grinding, dust suction operation is performed while grinding, dust pollution is reduced, the use of the device is more convenient, and the working efficiency is greatly increased.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the mounting of the housing and the dual-shaft motor and the dust suction apparatus;
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;
FIG. 6 is a schematic view of the installation of the controller;
FIG. 7 is a cross-sectional view of the controller and hollow handle;
FIG. 8 is a schematic view of the mounting of the stationary fork and motor mount;
FIG. 9 is a schematic view 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 view 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 supporting leg.
Description of the reference numerals: 1. a machine 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 radiation fan, 3-1-1, a suction seat, 3-1-2, a heat radiation seat, 3-5, an air outlet, 3-6, a separation layer, 3-7, a channel hole, 3-8, a heat radiation fin, 3-9, an air inlet, 3-10, a connecting hole, 4, a dust suction device, 4-1, a dust suction box, 4-2, a rotary 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, 4-8, an air inlet channel, 4-9, an air inlet joint, 4-10 and an air outlet joint, 5. the device comprises a controller, 5-1 parts of a controller body, a shell, 5-2 parts of a controller body, 5-4 parts of a fixed seat, 5-3 parts of a circuit board, 5-5 parts of a heat dissipation block, 5-6 parts of a power element, 6 parts of a fixed fork, 7 parts of a mounting hole, 8 parts of a motor seat, 9 parts of a first helical gear, 10 parts of a second helical gear, 11 parts of a transmission shaft, 12 parts of a limit bearing, 13 parts of a sealing cover, 14 parts of a polishing disc, 15 parts of a protective shell, 15-1 parts of a protective cover, 15-2 parts of an air inlet cover, 16 parts of a dust inlet, 17 parts of a dust suction joint, 18 parts of a first folding pipe, 19 parts of a second folding pipe, 20 parts of a supporting seat, 21 parts of a supporting shaft, 22 parts of a connecting seat, 23 parts of a central shaft, 24 parts of an air inlet cavity, 25 parts of an air inlet, 26 parts of a rotating shaft, 27 parts of a rotor iron core, 28 parts of a permanent magnet, 29 parts of a positioning frame, 30 parts of a spacing bar, 31 parts of a spacing seat, 32. the device comprises a seamless steel pipe 33, elastic supporting legs 34, sliding holes 35, guide posts 36, limiting nuts 37, spring grooves 38, return springs 39, sealing rings 40, clamping grooves 41 and sealing baffles.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
with reference to the accompanying drawings: in the embodiment, 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 fixing fork 6 and a right fixing fork 6 which are rotatably connected with the machine shell 1 are arranged on one side of the hollow handle 2 close to the machine shell 1, a mounting hole 7 is formed in the center position of the inner side of the machine shell 1, a motor base 8 fixedly connected to the outer side of the machine shell 1 through a screw 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 base 8, a first helical gear 9 arranged through the motor base 8 is arranged on an output shaft at the lower end of the double-shaft motor 3, a second helical gear 10 positioned at the lower end of the motor base 8 is engaged and connected to the front side of the first helical gear 9, and a transmission shaft 11 is arranged at the center position of the inner side of the second helical gear 10, the upper end of a transmission shaft 11 is rotatably connected to the inner side of the lower end of a motor base 8, a limiting bearing 12 arranged on the outer side of the transmission shaft 11 is arranged at the lower end of a second helical gear 10, a sealing cover 13 positioned on the inner side of a mounting hole 7 is connected to the lower end of the motor base 8 in a threaded manner, the lower end of the transmission shaft 11 penetrates through the sealing cover 13 to be fixedly connected with a polishing disc 14 positioned on the lower end of a machine shell 1, and a protective shell 15 fixedly connected to the upper end of the motor base 8 is arranged on the outer side of a double-shaft motor 3;
the dust collection device 4 comprises a dust collection box 4-1 fixedly connected to the upper end of the machine shell 1, a rotary cavity 4-2 is arranged on the inner side of the dust collection box 4-1, an output shaft at the upper end of a double-shaft motor 3 penetrates through the dust collection box 4-1 and is fixedly connected with an air suction fan 4-3 positioned on 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 in a sealing mode through screws is arranged at the upper end of the air suction fan 4-3, the rotary cavity 4-2 is divided into an upper end suction cavity 4-5 and a lower end discharge cavity 4-6 by the partition plate 4-4, an air inlet hole 4-7 is arranged in the center position of the inner side of the partition plate 4-4, air inlet channels 4-8 arranged at the upper end of the partition plate 4-4 are arranged on the left side and the right side of the air inlet hole 4-7 and the air inlet channel 4-8 are arranged in a sealing mode with the inner side of the upper end of the dust collection box 4-1, an air inlet joint 4-9 positioned on the dust collection box 4-1 is arranged at the outer side of the air inlet channel 4-8, an air outlet joint 4-10 corresponding to the discharge cavity 4-6 is arranged at the rear end of the dust collection box 4-1, a clamping groove 40 which is arranged on the dust collection box 4-1 and surrounds the partition plate 4-4 is arranged at the bottom of the discharge cavity 4-5, a sealing baffle plate 41 is arranged at the inner side of the clamping groove 40, and the upper end of the sealing baffle plate 41 is clamped at the inner side of the partition plate 4-4;
the inner side of the machine shell 1 is provided with a left dust suction port 16 and a right dust suction port 16 which are arranged in a penetrating mode, the upper end of the machine shell 1 is fixedly connected with a dust suction joint 17 which is positioned on the outer side of the dust suction port 16, a first folding pipe 18 is connected between an air inlet joint 4-9 and the dust suction joint 17, a second folding pipe 19 is connected between an air outlet joint 4-10 and the hollow handle 2 in a sealing mode, the double-shaft motor 3 drives the polishing disc 14 to rotate and simultaneously drives the dust suction device 4 on the upper end of the double-shaft motor 3 to work, the dust suction device 4 is internally divided into an upper cavity and a lower cavity which are relatively closed through partition plates 4-4, so that the dust suction fan 4-3 can better perform dust suction operation, and the device can perform better dust suction operation while polishing.
As shown in fig. 8, the front end of the double-shaft motor 3 is provided with a support seat 20 fixedly connected to the upper end of the motor base 8 through screws, the front end of the support seat 20 is provided with a support shaft 21, the outer side of the support shaft 21 is rotatably connected with a connecting seat 22, the left side and the right side of the connecting seat 22 are provided with a center shaft 23, a front fixing fork 6 and a rear fixing fork 6 are rotatably connected to the outer sides of the corresponding center shafts 23, the support seat 8 is provided with the support seat 20, the fixing fork 6 is rotatably connected to the outer sides of the connecting seats 22 at the left end and the right end of the support seat 20 through the center shaft 23, the center shaft 23 and the support shaft 21 are vertically arranged, so that the handle 2 can rotate correspondingly in four directions in the front, the rear, the grinding machine is more convenient to use.
As shown in fig. 13, the periphery of the motor base 8 is provided with elastic supporting legs 33, the inner sides of the elastic supporting legs 33 are provided with sliding holes 34, the inner sides of the sliding holes 34 are slidably connected with guide posts 35 positioned at the upper end of the casing 1, the upper ends of the guide posts 35 are in threaded connection with limit nuts 36 for preventing the elastic supporting legs 33 from coming off, the lower ends of the elastic supporting legs 33 are provided with spring grooves 37 arranged at the outer sides of the guide posts 35, the inner sides of the spring grooves 37 are provided with return springs 38 positioned at the outer sides of the guide posts 35, the lower end of the casing 1 is provided with sealing rings 39 positioned at the periphery of the polishing disc 14 and provided with elastic supporting legs 33 with service springs 38, when the polisher works, the sealing rings 39 at the outer sides of the polishing disc 14 are firstly contacted with the wall surface, the hollow handle 2 drives the double-shaft motor 3 to press towards the wall surface, so that the dust polished by the polishing disc 14 is located in the sealing rings 39 and is quickly sucked into the dust suction box 4-1 under the effect of the dust collection joint 17, thereby avoiding the dust flying when the polisher is polishing.
As shown in fig. 6 and 7, the controller 5 comprises a shell 5-1 arranged at 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 fixed seat 5-4 fixedly connected at the outer side of the hollow handle 2, a circuit board 5-3 is arranged at the inner side of the shell 5-1, the lower end of the fixed seat 5-4 is fixedly connected with a radiating block 5-5 jointed with the hollow handle 2, the circuit board is arranged at the lower end of the radiating block 5-3, the front side and the rear side of the radiating block 5-5 are fixedly connected with a power element 5-6 electrically connected with the circuit board 5-3, the fixed seat 5-4 fixedly wrapped at the outer side of the hollow handle is arranged, the radiating block 5-5 jointed with the hollow handle 2 is arranged on the fixed seat 5-4, and the power element 5-6 is jointed at the outer surface of the radiating block 5-5, when the heat dissipation device is used, heat generated by the power elements 5-6 is transmitted into the heat dissipation blocks 5-5 through heat transfer, the heat dissipation blocks 5-5 transmit the heat into the hollow handle 2, and the dust collection device 4 sucks a large amount of air and dust into the hollow handle 2 during the operation due to the improvement, so that the air flowing speed in the hollow handle 2 is accelerated, the heat exchange speed between the hollow handle 2 and the flowing air inside the hollow handle is accelerated, the hollow handle 2 transmits the heat to the flowing air, the temperature of the hollow handle 2 is rapidly reduced, the temperature of the controller main body in the use process is greatly reduced, and the controller 5 can continuously work for a long time.
As shown in fig. 9, 10 and 11, the dual-shaft motor 3 comprises a base 3-1 installed on a motor base 8, a stator 3-2 installed in the base 3-1 and a rotor 3-3 located inside the stator 3-2, a first helical gear 9 is installed outside the lower end of the rotor 3-3, a heat radiation fan 3-4 located on the upper end of the motor base 8 is installed outside the lower end of the rotor 3-3, the base 3-1 comprises an air suction base 3-1-1 located outside the heat radiation fan 3-4 and a heat radiation base 3-1-2 located on the upper side of the air suction base 3-1-1, air outlets 3-5 connected with the heat radiation fan 3-4 are opened on the left and right sides of the air suction base 3-1-1, a separation layer 3-6 installed inside the heat radiation base 3-1-2 is arranged between the heat radiation fan 3-4 and the stator 3-2, a channel hole 3-7 positioned at the outer side of the rotor 3-3 is arranged at the center position of the inner side of the separating layer 3-6, a plurality of radiating fins 3-8 connected with the upper end of the air suction seat 3-1-1 are arranged at the outer side of the radiating seat 3-1-2, an air inlet 3-9 arranged in the radiating seat 3-1-2 is arranged at the lower end of the radiating fins 3-8, a connecting hole 3-10 used for connecting the air inlet 3-9 and the radiating fan 3-4 is arranged at the outer side of the separating layer 3-6, a radiating fan 3-4 positioned at the upper end of the polishing disc 14 is arranged, the radiating fan 3-4 is driven to rotate by the double-shaft motor 3, so that the outside air is sucked from the outer side of the machine base 3-1 and enters the radiating fan 3-4 through the air inlet 3-9 and the connecting hole 3-10 under the action of the radiating fan 3-4, therefore, the air flow outside the machine base 3-1 is accelerated, the heat transfer between the machine base 3-1 and the heat dissipation fins 3-8 and the outside air is accelerated, and finally the air after the heat transfer is discharged through the air outlet 3-5, so that the heat dissipation speed of the machine base 3-1 is accelerated, and the use temperature of the double-shaft motor 3 in use is reduced.
As shown in fig. 2 and 10, the protective casing 15 is located outside the base 3-1, the protective casing 15 includes a protective cover 15-1 located outside the base 3-1 and an air inlet cover 15-2 located on the upper end of the protective cover 15-1, an air inlet chamber 24 is provided between the protective cover 15-1 and the base 3-1, an air inlet 25 connected to the air inlet chamber 24 is provided on the upper end of the air inlet cover 15-2, the protective cover 15-1 is provided so that when the cooling fan 3-4 rotates to absorb outside air, air can only be sucked in through the upper end of the protective cover 15-1 and flows downwards along the air inlet chamber 24 and the cooling fins 3-8, and finally enters the cooling fan 3-4 through the air inlet 3-9 and the engagement holes 3-10, so that the sucked flowing air can continuously contact with the base 3-1 and the cooling fins 3-8, therefore, the outside air can continuously absorb heat from the base 3-1 and the radiating fins 3-8 in the flowing process, and the temperature of the base is greatly reduced when the base is used.
As shown in fig. 11, 12 and 13, the rotor 3-3 includes a rotating shaft 26 provided with a first helical gear 9, a rotor core 27 provided outside the rotating shaft 26, and a plurality of permanent magnets 28 provided outside the rotor core 27, the rotor core 27 is provided with a positioning frame 29, the outer side of the positioning frame 29 is provided with a plurality of evenly distributed spacing bars 30, the permanent magnets 28 are provided outside the positioning frame 29 and between the spacing bars 30, the upper and lower ends of the permanent magnets 28 are provided with limiting seats 31 provided outside the rotor core 27, a seamless steel pipe 32 wrapped outside the permanent magnets 28 is provided between the upper and lower limiting seats 31, the permanent magnets 28 are mounted between the spacing bars 30, the permanent magnets 28 are limited in the circumferential direction, the upper and lower ends of the permanent magnets 28 are limited by the limiting seats 31, and the outer side is wrapped with the thin-walled seamless steel pipe 32, so that the inner and outer sides of the permanent magnets 28 are limited, thereby ensuring that the permanent magnets 28 are firmly fixed and are not easy to fall off, and the seamless steel pipe 32 is only arranged on the outer side of the permanent magnet 28, so that the distance between the rotor 3-3 and the stator 3-2 is greatly shortened, the stronger the magnetic field is, the larger the mechanical energy generated when the rotor 3-1 cuts the magnetic induction line is, the larger the torque of the double-shaft motor 3 of the polishing disc 14 is, thereby ensuring that the lower polishing disc 14 and the upper air suction fan 3-3 can be simultaneously driven to rotate when the rotor 3-1 rotates, and ensuring the polishing and dust collection effects.
A use method of a wall surface grinding machine adopting a novel brushless motor structure comprises the following steps:
1) polishing: when the double-shaft motor type wall surface polisher works, the tail end of the hollow handle 2 is connected with a 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 machine shell 1 to rotate, a user holds the hollow handle 2 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 the double-shaft motor type wall surface polisher is used, the sealing ring 39 is firstly contacted with the wall surface, then the hollow handle 2 pressurizes the motor base 8, 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 the polishing process, the sealing ring 39 is covered on the outer side of the polishing disc 14 and is in contact with the wall surface, so that dust falling after being polished by the polishing disc 14 is covered in the sealing ring 39, and when the double-shaft motor 3 works, the double-shaft motor 3 drives the 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 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 air suction fan 4-3, and finally is introduced into the dust collecting device;
3) the controller dissipates heat: a power element 5-6 in the controller 5 works to generate heat and transmit the heat into the heat dissipation block 5-5, the heat dissipation block 5-5 transmits 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 taken out along with flowing air;
4) the motor dissipates heat: when the double-shaft motor 3 works and rotates, the heat dissipation fan 3-4 at the upper end of the motor base 8 is driven to rotate, so that air is sucked in through the air suction port 25 of the air inlet cover 15-2 at the upper end and flows downwards along the air inlet cavity 24, heat exchange is carried out between the air and the base 3-1 and the heat dissipation fins 3-8 in the flowing process, the air is sucked into the heat dissipation fan 3-4 of the air suction base 3-1-1 through the air inlet 3-9 and the connecting hole 3-10 after the heat exchange is finished, and hot air is discharged out of the outer side of the base 3-1 from the air outlet 3-5 through the heat dissipation fan 3-4.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims (9)

1.一种采用新型无刷电机结构的墙面打磨机，包括机壳（1）、安装在机壳（1）上的空心手柄（2）、安装在机壳（1）上的双轴电机（3）、吸尘装置（4）和安装在空心手柄（2）上的控制器（5），所述空心手柄（2）靠近机壳（1）的一侧安装有左右两个与机壳（1）转动连接的固定叉（6），其特征是：所述机壳（1）内侧中心位置开有安装孔（7），安装孔（7）上端设有通过螺钉固定连接在机壳（1）外侧的电机座（8），双轴电机（3）固定连接在电机座（8）上端，所述双轴电机（3）下端的输出轴安装有穿过电机座（8）设置的第一斜齿齿轮（9），第一斜齿齿轮（9）前侧啮合连接有位于电机座（8）下端的第二斜齿齿轮（10），第二斜齿齿轮（10）内侧中心位置安装有传动轴（11），传动轴（11）上端转动连接在所述电机座（8）下端内侧，所述第二斜齿齿轮（10）下端设有安装在传动轴（11）外侧的限位轴承（12），电机座（8）下端螺纹连接有位于所述安装孔（7）内侧的密封盖（13），所述传动轴（11）下端穿过所述密封盖（13）固定连接有位于机壳（1）下端的打磨盘（14），所述双轴电机（3）外侧设有固定连接在电机座（8）上端的保护壳（15）。1. A wall grinder with a novel brushless motor structure, comprising a casing (1), a hollow handle (2) mounted on the casing (1), and a dual-shaft motor mounted on the casing (1) (3), a dust collector (4) and a controller (5) installed on the hollow handle (2), the hollow handle (2) is installed with two left and right and the casing on the side close to the casing (1). (1) The fixed fork (6) for rotational connection is characterized in that a mounting hole (7) is opened at the inner center of the casing (1), and the upper end of the mounting hole (7) is fixedly connected to the casing (7) by screws. 1) The outer motor seat (8), the biaxial motor (3) is fixedly connected to the upper end of the motor seat (8), and the output shaft at the lower end of the biaxial motor (3) is installed with a No. A helical gear (9), the front side of the first helical gear (9) is meshed with a second helical gear (10) located at the lower end of the motor base (8), and the second helical gear (10) is installed at the inner center position There is a transmission shaft (11), the upper end of the transmission shaft (11) is rotatably connected to the inner side of the lower end of the motor base (8), and the lower end of the second helical gear (10) is provided with a limit installed on the outer side of the transmission shaft (11) The bearing (12), the lower end of the motor seat (8) is threadedly connected with a sealing cover (13) located inside the mounting hole (7), and the lower end of the transmission shaft (11) is fixedly connected through the sealing cover (13) with a The grinding disc (14) is located at the lower end of the casing (1), and the outer side of the double-shaft motor (3) is provided with a protective shell (15) fixedly connected to the upper end of the motor base (8). 2.根据权利要求1所述的一种采用新型无刷电机结构的墙面打磨机，其特征是：所述吸尘装置（4）包括固定连接在机壳（1）上端的吸尘盒（4-1），吸气盒（4-1）内侧开有旋转腔（4-2），所述双轴电机（3）上端的输出轴穿过所述吸尘盒（4-1）固定连接有位于旋转腔（4-2）内侧的吸气风扇（4-3），所述吸气风扇（4-3）上端设有通过螺钉密封连接在旋转腔（4-2）内侧的分隔板（4-4），分隔板（4-4）将所述旋转腔（4-2）分为上端的吸入腔（4-5）和下端的排出腔（4-6），所述分隔板（4-4）内侧中心位置开有进气孔（4-7），进气孔（4-7）左右两侧设有开在所述分隔板（4-4）上端的进气通道（4-8），所述进气孔（4-7）和进气通道（4-8）与吸尘盒（4-1）上端内侧密封设置，所述进气通道（4-8）外侧设有位于所述吸尘盒（4-1）上的进气接头（4-9），所述吸尘盒（4-1）后端设有与所述排出腔（4-6）对应的出气接头（4-10），所述排出腔（4-5）底部设有开在所述吸尘盒（4-1）上并环绕分隔板（4-4）设置的卡槽（40），卡槽（40）内侧设有密封挡板（41），密封挡板（41）上端卡接在分隔板（4-4）内侧；2. A wall sander with a novel brushless motor structure according to claim 1, wherein the dust suction device (4) comprises a dust suction box (4) fixedly connected to the upper end of the casing (1). 4-1), a rotating cavity (4-2) is opened inside the suction box (4-1), and the output shaft of the upper end of the double-shaft motor (3) is fixedly connected through the suction box (4-1) There is a suction fan (4-3) located inside the rotating cavity (4-2), and the upper end of the suction fan (4-3) is provided with a partition plate that is sealed and connected to the inside of the rotating cavity (4-2) by screws (4-4), a partition plate (4-4) divides the rotating 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 intake hole (4-7) is opened at the inner center of the plate (4-4), and air intake passages opened at the upper end of the partition plate (4-4) are provided on the left and right sides of the air intake hole (4-7). (4-8), the air inlet hole (4-7) and the air inlet passage (4-8) are sealed with the inner side of the upper end of the dust box (4-1), and the outer side of the air inlet passage (4-8) There is an air intake joint (4-9) located on the vacuum box (4-1), and the rear end of the vacuum box (4-1) is provided with a corresponding discharge cavity (4-6). The air outlet connector (4-10), the bottom of the discharge cavity (4-5) is provided with a card slot (40) opened on the dust suction box (4-1) and arranged around the partition plate (4-4) , the inner side of the card slot (40) is provided with a sealing baffle (41), and the upper end of the sealing baffle (41) is clamped on the inner side of the dividing plate (4-4); 所述机壳（1）内侧开有左右两个贯穿设置的吸尘口（16），机壳（1）上端固定连接有位于吸尘口（16）外侧的吸尘接头（17），所述进气接头（4-9）和吸尘接头（17）之间连接有第一折叠管（18），所述出气接头（4-10）和空心手柄（2）之间密封连接有第二折叠管（19）。The inner side of the casing (1) is provided with two left and right dust suction ports (16) arranged therethrough, and the upper end of the casing (1) is fixedly connected with a dust suction joint (17) located outside the dust suction port (16). A first folded tube (18) is connected between the air inlet joint (4-9) and the dust suction joint (17), and a second folded tube is sealedly connected between the air outlet joint (4-10) and the hollow handle (2). Tube (19). 3.根据权利要求1所述的一种采用新型无刷电机结构的墙面打磨机，其特征是：所述双轴电机（3）前端设有通过螺钉固定连接在所述电机座（8）上端的支撑座（20），支撑座（20）前端设有支撑轴（21），支撑轴（21）外侧转动连接有连接座（22），连接座（22）左右两侧设有中心轴（23），前后所述固定叉（6）转动连接在相应的中心轴（23）外侧。3. A wall sander with a novel brushless motor structure according to claim 1, characterized in that: the front end of the dual-axis motor (3) is provided with a screw fixedly connected to the motor base (8) The support seat (20) at the upper end is provided with a support shaft (21) at the front end of the support seat (20), a connecting seat (22) is rotatably connected to the outer side of the support shaft (21), and a central shaft ( 23), the front and rear fixed forks (6) are rotatably connected to the outside of the corresponding central shaft (23). 4.根据权利要求1所述的一种采用新型无刷电机结构的墙面打磨机，其特征是：所述电机座（8）四周设有弹性支撑脚（33），弹性支撑脚（33）内侧开有滑动孔（34），滑动孔（34）内侧滑动连接有位于所述机壳（1）上端的导向柱（35），导向柱（35）上端螺纹连接有避免弹性支撑脚（33）脱出的限位螺母（36），所述弹性支撑脚（33）下端设有开在所述导向柱（35）外侧的弹簧槽（37），弹簧槽（37）内侧设有位于导向柱（35）外侧的复位弹簧（38），所述机壳（1）下端安装有位于所述打磨盘（14）四周的密封环（39）。4. A wall sander with a novel brushless motor structure according to claim 1, characterized in that: the motor base (8) is provided with elastic support feet (33) around the motor base (8), and elastic support feet (33) A sliding hole (34) is opened on the inner side, and the inner side of the sliding hole (34) is slidably connected with a guide column (35) located at the upper end of the casing (1). The disengaged limit nut (36), the lower end of the elastic support foot (33) is provided with a spring groove (37) opened on the outer side of the guide column (35), and the inner side of the spring groove (37) is provided with a guide column (35) ) outside the return spring (38), the lower end of the casing (1) is installed with a sealing ring (39) around the grinding disc (14). 5.根据权利要求1所述的一种采用新型无刷电机结构的墙面打磨机，其特征是：所述控制器（5）包括安装在空心手柄（2）外侧的外壳（5-1）、安装在外壳（5-1）上端的控制器主体（5-2）和固定连接在空心手柄（2）外侧的固定座（5-4），外壳（5-1）内侧设有电路板（5-3），固定座（5-4）下端固定连接有与空心手柄（2）相贴合设置的散热块（5-5），电路板位于散热块（5-3）下端，散热块（5-5）前后两侧固定连接有与电路板（5-3）电性连接的功率元件（5-6）。5. A wall sander with a novel brushless motor structure according to claim 1, wherein the controller (5) comprises a casing (5-1) mounted on the outside of the hollow handle (2). , the controller main body (5-2) installed on the upper end of the shell (5-1) and the fixing seat (5-4) fixedly connected to the outer side of the hollow handle (2), the inner side of the shell (5-1) is provided with a circuit board ( 5-3), the lower end of the fixing seat (5-4) is fixedly connected with a heat dissipation block (5-5) which is fitted with the hollow handle (2), the circuit board is located at the lower end of the heat dissipation block (5-3), and the heat dissipation block ( 5-5) Power components (5-6) electrically connected to the circuit board (5-3) are fixedly connected on the front and rear sides. 6.根据权利要求1所述的一种采用新型无刷电机结构的墙面打磨机，其特征是：所述双轴电机（3）包括安装在所述电机座（8）上的机座（3-1）、安装在机座（3-1）内的定子（3-2）和位于定子（3-2）内侧的转子（3-3），所述第一斜齿齿轮（9）安装在转子（3-3）下端外侧，所述转子（3-3）下端外侧安装有位于所述电机座（8）上端的散热风扇（3-4），所述机座（3-1）包括位于所述散热风扇（3-4）外侧的吸气座（3-1-1）和位于所述吸气座（3-1-1）上侧的散热座（3-1-2），所述吸气座（3-1-1）左右两侧开有与所述散热风扇（3-4）连接的出风口（3-5），所述散热风扇（3-4）与所述定子（3-2）之间设有安装在散热座（3-1-2）内侧的分隔层（3-6），分隔层（3-6）内侧中心位置开有位于转子（3-3）外侧的通道孔（3-7），所述散热座（3-1-2）外侧设有若干个与所述吸气座（3-1-1）上端连接的散热翅片（3-8），散热翅片（3-8）下端设有开在所述散热座（3-1-2）内的进风口（3-9），所述分隔层（3-6）外侧开有用于连接进风口（3-9）和散热风扇（3-4）的衔接孔（3-10）。6. A wall sander with a novel brushless motor structure according to claim 1, characterized in that: the dual-axis motor (3) comprises a base ( 3-1), the stator (3-2) installed in the machine base (3-1) and the rotor (3-3) located inside the stator (3-2), the first helical gear (9) is installed A cooling fan (3-4) located at the upper end of the motor base (8) is installed outside the lower end of the rotor (3-3), and the base (3-1) includes The air intake seat (3-1-1) located outside the cooling fan (3-4) and the heat dissipation seat (3-1-2) located on the upper side of the air intake seat (3-1-1), so The air outlet (3-5) connected to the cooling fan (3-4) is opened on the left and right sides of the suction seat (3-1-1). The cooling fan (3-4) is connected to the stator (3-4). 3-2) There is a separation layer (3-6) installed on the inner side of the heat sink (3-1-2), and the inner center of the separation layer (3-6) is provided with a separation layer (3-3) outside the rotor (3-3). A passage hole (3-7), a plurality of heat dissipation fins (3-8) connected to the upper end of the air intake seat (3-1-1) are provided on the outside of the heat dissipation seat (3-1-2) to dissipate heat The lower end of the fin (3-8) is provided with an air inlet (3-9) opened in the heat sink (3-1-2), and the outer side of the separation layer (3-6) is provided with an air inlet (3-9) for connecting the air inlet ( 3-9) and the connecting hole (3-10) of the cooling fan (3-4). 7.根据权利要求6所述的一种采用新型无刷电机结构的墙面打磨机，其特征是：所述保护壳（15）位于机座（3-1）外侧，保护壳（15）包括位于机座（3-1）外侧的保护罩（15-1）和位于保护罩（15-1）上端的进风罩（15-2），所述保护罩（15-1）和机座（3-1）之间设有进风腔（24），所述进风罩（15-2）上端开有与所述进风腔（24）连接的吸气口（25）。7. The wall sander using a novel brushless motor structure according to claim 6, wherein the protective shell (15) is located outside the machine base (3-1), and the protective shell (15) includes The protective cover (15-1) located outside the machine base (3-1) and the air inlet cover (15-2) located at the upper end of the protective cover (15-1), the protective cover (15-1) and the machine base ( An air inlet cavity (24) is provided between 3-1), and an air inlet (25) connected to the air inlet cavity (24) is opened at the upper end of the air inlet cover (15-2). 8.根据权利要求6所述的一种采用新型无刷电机结构的墙面打磨机，其特征是：所述转子（3-3）包括安装有第一斜齿齿轮（9）的转轴（26）、安装在转轴（26）外侧的转子铁芯（27）和安装在转子铁芯（27）外侧的若干个永磁体（28），所述转子铁芯（27）安装有定位架（29），定位架（29）外侧设有若干个均匀分布的间隔条（30），所述永磁体（28）设置在定位架（29）外侧并位于间隔条（30）之间，所述永磁体（28）上下两端均设有安装在转子铁芯（27）外侧的限位座（31），上下所述限位座（31）之间设有包裹在永磁体（28）外侧的无缝钢管（32）。8. The wall sander using a novel brushless motor structure according to claim 6, wherein the rotor (3-3) comprises a rotating shaft (26) on which the first helical gear (9) is installed ), a rotor core (27) mounted on the outside of the rotating shaft (26), and a number of permanent magnets (28) mounted on the outside of the rotor core (27), the rotor core (27) is mounted with a spacer (29) , the outer side of the positioning frame (29) is provided with a number of evenly distributed spacers (30), the permanent magnets (28) are arranged on the outer side of the positioning frame (29) and between the spacers (30), the permanent magnets ( 28) The upper and lower ends are provided with limit seats (31) installed on the outer side of the rotor core (27), and between the upper and lower limit seats (31), a seamless steel pipe wrapped on the outer side of the permanent magnet (28) is arranged (32). 9.一种采用新型无刷电机结构的墙面打磨机的使用方法，包括以下步骤：9. A method of using a wall grinder with a novel brushless motor structure, comprising the following steps: 1)打磨：工作时，将空心手柄（2）尾端与集尘装置连接，通过控制器（5）开启双轴电机（3），双轴电机（3）工作带动机壳（1）内的打磨盘（14）转动，使用人员再握持空心手柄（2）对待打磨的墙面进行打磨操作，使用时先将打磨盘（14）与墙面平行放置并逐渐向墙面靠近，使得密封环（39）先与墙面接触，再通过空心手柄（2）对电机座（8）进行加压，使得电机座（8）带动双轴电机（3）和打磨盘（14）向墙面一侧加压，从而对相应的墙面进行打磨；1) Grinding: When working, connect the end of the hollow handle (2) to the dust collecting device, turn on the dual-axis motor (3) through the controller (5), and the dual-axis motor (3) works to drive the The grinding disc (14) is rotated, and the user then holds the hollow handle (2) to grind the wall to be polished. When using, first place the grinding disc (14) parallel to the wall and gradually approach the wall, so that the sealing ring (39) Contact with the wall first, and then pressurize the motor seat (8) through the hollow handle (2), so that the motor seat (8) drives the biaxial motor (3) and the grinding disc (14) to the side of the wall Pressurized, thereby sanding the corresponding wall; 2)吸尘：在打磨过程时，密封环（39）覆盖在打磨盘（14）外侧与墙面接触，使得打磨盘（14）打磨掉落的粉尘被笼罩覆盖在密封环（39）内，且双轴电机（3）在工作时，双轴电机（3）带动吸尘装置（4）内的吸气风扇（4-3）转动，从而使得密封环（39）内带有粉尘的空气通过吸尘接头（17）和第一折叠管（18）吸入吸尘盒（4-1）内，通过进气通道（4-8）和进气孔（4-7）进入排出腔（4-6）内，并在吸气风扇（4-3）的作用下从出气接头（4-10）和第二折叠管（19）内排入空心手柄（2）内，最后将粉尘通入集尘装置内；2) Dust collection: During the grinding process, the sealing ring (39) covers the outside of the grinding disc (14) and contacts the wall, so that the dust dropped by the grinding disc (14) is covered in the sealing ring (39), And when the biaxial motor (3) is working, the biaxial motor (3) drives the suction fan (4-3) in the dust suction device (4) to rotate, so that the air with dust in the sealing ring (39) passes through. The dust suction joint (17) and the first folded pipe (18) are sucked into the dust suction box (4-1), and enter the discharge cavity (4-6) through the air inlet passage (4-8) and the air inlet hole (4-7) ), and under the action of the suction fan (4-3), it is discharged from the air outlet joint (4-10) and the second folding pipe (19) into the hollow handle (2), and finally the dust is passed into the dust collecting device Inside; 3)控制器散热：控制器（5）内的功率元件（5-6）工作发热将热量传递给散热块（5-5）内，散热块（5-5）再将热量传递給与散热块（5-5）相贴合的空心手柄（2），空心手柄（2）内带有粉尘的空气再对空心手柄（2）进行热交换，从而将热量随着流动的空气带出；3) Heat dissipation of the controller: The power components (5-6) in the controller (5) generate heat and transfer the heat to the heat dissipation block (5-5), and the heat dissipation block (5-5) transfers the heat to the heat dissipation block (5-5). 5-5) The hollow handle (2) that fits together, and the air with dust in the hollow handle (2) exchanges heat with the hollow handle (2), so as to bring the heat out with the flowing air; 4)电机散热：双轴电机（3）在工作转动时带动电机座（8）上端的散热风扇（3-4）转动，从而使得空气通过上端进风罩（15-2）的吸气口（25）吸入，并顺着进风腔（24）向下流动，流动过程中与机座（3-1）和散热翅片（3-8）进行热量交换，交换完成后空气通过进风口（3-9）和衔接孔（3-10）被吸入吸气座（3-1-1）的散热风扇（3-4）内，并通过散热风扇（3-4）将热空气从出风口（3-5）内排出机座（3-1）外侧。4) Motor heat dissipation: The dual-axis motor (3) drives the cooling fan (3-4) at the upper end of the motor base (8) to rotate during operation, so that the air passes through the air inlet (15-2) of the upper air inlet cover (15-2). 25) Inhale, and flow down along the air inlet cavity (24), exchange heat with the machine base (3-1) and the cooling fins (3-8) during the flow process, and the air passes through the air inlet (3) after the exchange is completed. -9) and the connecting hole (3-10) are sucked into the cooling fan (3-4) of the suction seat (3-1-1), and the hot air is drawn from the air outlet (3-4) through the cooling fan (3-4). -5) Inner discharge to the outside of the base (3-1).
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