CN104659999A - Built-in double-insulation brushless direct-current motor used for high-power electric breaker - Google Patents
Built-in double-insulation brushless direct-current motor used for high-power electric breaker Download PDFInfo
- Publication number
- CN104659999A CN104659999A CN201510076392.4A CN201510076392A CN104659999A CN 104659999 A CN104659999 A CN 104659999A CN 201510076392 A CN201510076392 A CN 201510076392A CN 104659999 A CN104659999 A CN 104659999A
- Authority
- CN
- China
- Prior art keywords
- rotor
- stator
- transmission shaft
- electric machine
- brushless electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention relates to the field of electric tools, in particular to a built-in double-insulation brushless direct-current motor used for a high-power electric breaker. The motor comprises a casing, wherein a brushless motor stator is arranged in the casing, a brushless motor rotor is arranged in the stator and matched with the stator, the rotor is mounted in the middle of a transmission shaft, a drive module for driving the rotor to rotate is arranged at one end of the transmission shaft, and the other end of the transmission shaft is mounted on an end cap of the casing. The electric breaker is provided with the brushless motor instead of a brush motor as before through series excitation replacement and adopts intelligent control instead of original switch control, the efficiency is increased by more than 30%, and the service life of the electric breaker is prolonged by multiple times relative to that of a conventional electric breaker driven by a series excitation motor.
Description
Technical field
The present invention relates to field of power tools, is the built-in pair of isolated dc brushless electric machine for high-power electric pick specifically.
Background technology
Electric pick is a kind of hand-hold type being widely used in pipeline laying, mechanical erection, plumbing Facilities Construction, interior decoration, port facilities construction and other engineering constructions
electric tool, be applicable to carry out crushing operation etc. to concrete, masonry structure, bituminous pavement.Current traditional electric pick (electric breaker) is power with single-phase series motor, and have mechanical property soft, the shortcomings such as brush is easy to wear, have impact on useful life and the efficiency of electric pick greatly.DC brushless motor is because efficiency is high, torque characteristics is excellent, volume is little, is particularly suitable for the application of alternative series machine on electric tool.But at present because technical reason brush DC technology does not also form electromechanical integrated product in the application of field of power tools especially on high-power electric pick and extensively promotes.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of reasonable in design, convenient for installation and maintenance, the life-span is longer, efficiency is higher, torque characteristics better two isolated dc brushless electric machine.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of built-in pair of isolated dc brushless electric machine for high-power electric pick, comprise housing, a brushless motor stator is provided with in this housing, coordinate in this stator and be provided with a brushless electric motor rotor, described rotor is arranged on the middle part of a power transmission shaft, this power transmission shaft one end is provided with the driver module driving described rotor to rotate, and the power transmission shaft other end is arranged on the end cap of housing.
As preferably, housing forms a circular groove near one end described in power transmission shaft, and this circular groove bottom land is provided with bullet pad, bullet pad is installed a bearing, described in power transmission shaft, the end of one end is arranged on bearing.
As preferably, described stator comprises the stator silicon steel sheet being laminated into column and the plastic parts being arranged on the axial two ends of stator silicon steel sheet, this plastic parts is wound with the line bag be connected with described driver module, this line bag and silicon steel sheet are isolated and are arranged, described plastic parts is fixedly connected with housing.
As preferably, described driver module comprises the circuit board being provided with driving chip, and the power supply of this circuit board is by electric pick switch control rule, and described line bag is electrically connected with circuit board.
As preferably, described circuit board package is on radiator one side, and this radiator is fixedly connected with housing.
As preferably, described radiator another side is provided with the radiation tooth of several square.
As preferably, be axially provided with rib along described radiator perisporium, rib be provided with the groove passed through for one end described in power transmission shaft.
As preferably, described rotor comprises the stacked pillared rotor silicon steel sheet coordinated with described stator silicon steel sheet, and the perisporium of this rotor silicon steel sheet axial end is embedded with magnetic links, is coated with rotor jacket at rotor silicon steel sheet and magnetic links periphery.
As preferably, described in power transmission shaft, the other end is provided with radiator fan.
As preferably, between radiator fan and described stator, be provided with plastic barrier ring plate.
The present invention adopts intelligent driver module to control, and substitutes traditional series machine as follows as its advantage of electric pick power using brushless electric machine:
1, non-carbonate, without rotor windings, electric machine structure becomes simpler, can accomplish that motor is non-maintaining;
2, driving is encouraged in traditional series connection, produces electric spark all the time in carbon brush and rotor electrical contact work, and be not suitable for using at some Code in Hazardous Special Locations, brushless electric machine does not then have the misgivings of this respect;
3, electric pick brushless electric machine adopts intelligent object to control, and can monitor in real time, fault alarm etc. to the operating state of motor, does not worry burning motor;
4, brushless intelligent control module in electric pick, pass through algorithm optimization, less hardware resource is have employed than traditional brushless control strategy, PCB volume is accomplished minimum, structurally by module heat radiator innovative design, with minimum size, the material economized most meets control system cooling requirements, therefore control module cost performance is high, has the good market competitiveness;
5, a whole set of brushless control system is customized based on electric pick housing existing structure, electric pick housing is without the need to twice-die-opening, its overall dimension can adapt to the brushless upgrading of most electric pick structure on the market, has lacked the assemble flow of electric pick after carbon brush parts more smooth and easy, quick.
6, adopt the present invention by series excitation replace make electric pick from brushing away to brushless, move towards Based Intelligent Control from switch control rule, efficiency can improve 30% with, and the life-span be traditional series excitation drive several times.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present invention.
Fig. 2 is the perspective view of stator in the present invention.
Fig. 3 is the perspective view of rotor of the present invention.
Fig. 4 is the perspective view of driver module in the present invention.
Fig. 5 is the perspective view of the other direction of Fig. 4.
Embodiment
The built-in pair of isolated dc brushless electric machine for high-power electric pick is introduced in detail below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, it comprises housing 2, a brushless motor stator 6 is provided with in this housing, coordinate in this stator and be provided with a brushless electric motor rotor 7, described rotor is arranged on the middle part of a power transmission shaft 9, this power transmission shaft one end is provided with the driver module 5 driving described rotor to rotate, and the power transmission shaft other end is arranged on the end cap of housing.
Housing forms a circular groove 1 near one end described in power transmission shaft, and this circular groove bottom land is provided with bullet pad 3, and bullet pad is installed a bearing 4, described in power transmission shaft, the end of one end is arranged on bearing.When mounted, in circular groove, smear appropriate butter, then put bullet pad, bearing successively, and the end of one end described in bearing is driven in the bearing of circular groove.
Described stator 6 comprises stacked pillared stator silicon steel sheet 63 and is arranged on the plastic parts 61 at the axial two ends of stator silicon steel sheet, this plastic parts is wound with the line bag 62 be connected with described driver module, this line bag and silicon steel sheet are isolated and are arranged, make line bag and silicon steel sheet electrical isolation, described plastic parts is fixedly connected with housing; The hexagon socket head cap screw of stator silicon steel sheet and housing and two fixed stators also realizes electrical isolation by plastic parts simultaneously, thus makes stator realize double insulation protection.
Driver module 5 of the present invention comprises the circuit board 51 being provided with driving chip, and the power supply of this circuit board is by electric pick switch control rule, and described line bag is electrically connected with circuit board.Circuit board adopts high accuracy control algolithm and high-power reliable full-bridge driving chip to carry out alternative traditional bulky capacitor control mode, realizes without electric capacity, controls without Hall; Described circuit board package is on radiator 52 1 side, and this radiator is fixedly connected with housing, and radiator is similar to tortoise shape outward, and the radiation tooth of another side makes the blockage of independent ordered arrangement to increase area of dissipation; Axially be provided with rib 53 along described radiator perisporium, rib be provided with the groove 54 passed through for one end described in power transmission shaft, convenient installation; Rib can form adhesive attraction to inner casting glue.Driver module is arranged on housing bottom, the adjacent tunnel inlet in described another side of radiator, guarantees the heat produced when reducing module work in time; Driver module is fixed by two hexagon socket head cap screws, simple installation.
In implementation process, the line of circuit board amounts to five, and inlet wire two is connected with electric pick control switch, access single phase poaer supply; Outlet three connects with brushless motor stator line bag, is three phase mains.It is electric that switch motion makes driver module obtain, and export three-phase pulse voltage by setpoint frequency, thus produce rotating magnetic field on stator, stator field synchronous axial system together just followed by rotor; Switch resets, and driver module quits work, and rotating magnetic field disappears, rotor stall.
Rotor 7 of the present invention comprises the stacked pillared rotor silicon steel sheet 73 coordinated with described stator silicon steel sheet, and the perisporium of this rotor silicon steel sheet axial end is embedded with magnetic links 72, is coated with rotor jacket 71 at rotor silicon steel sheet and magnetic links periphery.Rotor magnetic steel sheet is rare earth permanent-magnetic material neodymium iron boron, is embedded in rotor silicon steel sheet surrounding, its outside with one deck steel sheath parcel, in case in the sub-high-speed rotation of spline magnetic links come off, cracked.
Described in power transmission shaft, the other end is provided with radiator fan 8; Between radiator fan and described stator, be provided with plastic barrier ring plate 10, during to make fan work, foreign material do not pollute reducing gear; Described radiator fan, brushless motor stator and power transmission shaft are assembled into parts in advance at outside motor, then coordinate in order with electric pick inner brushless electric motor rotor, brushless motor driver module etc.After rotor is seated, rotor portion is in stator, and rotor jacket and stator inner wall should leave about 0.5mm gap.
Assembling process of the present invention is as follows:
The first step, at housing bottom right side circular groove, appropriate butter is smeared at place, then puts bullet pad, bearing successively, and is driven in by bearing inside circular groove.
Second step, assembling brushless electric machine drives mould, driver module power supply line is drawn from line outlet on the right side of housing, three bringing onto load lines are drawn from die cavity on the left of housing, shift driver module onto housing bottom from left to right, until two install U capable groove and overlap with the boss of housing bottommost, be then fixed with two hexagon socket head cap screws.
3rd step, assembling brushless motor stator, makes brushless motor stator two fixing hole and electric pick inner walls second layer boss screwed hole concentric fits, is advanced by brushless motor stator from left to right inside electric pick housing, until overlap with inner walls second layer boss, then be fixed with hexagon socket head cap screw.Three load lines that motor drive module is drawn misplace with three wires that stator line bag is drawn and weld, and insulation processing, after stator assembles, then plastic barrier ring plate is close in brushless motor stator insertion housing die cavity.
4th step, assembling brushless electric motor rotor parts, are made into rotor part with drive shaft cartridge in advance by brushless electric motor rotor, radiator fan, rotor part are filled in housing by the 3rd step basis, and are driven in power transmission shaft front end in bearing and coordinate with it.
5th step, the left end cap of assembling band gear reduction, after completing above-mentioned four step assemblings, power transmission shaft is made to pass left end cap side internal bearings, left end cap is located by alignment pin and electric pick housing, with wooden mallet, left end cap and housing are struck tightly again, then with hexagon socket head cap screw, left end cap is locked on housing, so far complete the assembling of electric pick brushless electric machine.
Above-mentioned execution mode is used for illustrative purposes only, and be not limitation of the present invention, the those of ordinary skill of relevant technical field, without departing from the spirit and scope of the present invention, can also make various change and modification, therefore all equivalent technical schemes also should belong to category of the present invention.
Claims (10)
1. a built-in pair of isolated dc brushless electric machine for high-power electric pick, comprise housing, a brushless motor stator is provided with in this housing, coordinate in this stator and be provided with a brushless electric motor rotor, it is characterized in that: described rotor is arranged on the middle part of a power transmission shaft, this power transmission shaft one end is provided with the driver module driving described rotor to rotate, and the power transmission shaft other end is arranged on the end cap of housing.
2. brushless electric machine according to claim 1, is characterized in that: on housing, form a circular groove near one end described in power transmission shaft, this circular groove bottom land is provided with bullet pad, bullet pad is installed a bearing, described in power transmission shaft, the end of one end is arranged on bearing.
3. brushless electric machine according to claim 1, it is characterized in that: described stator comprises the stator silicon steel sheet being laminated into column and the plastic parts being arranged on the axial two ends of stator silicon steel sheet, this plastic parts is wound with the line bag be connected with described driver module, this line bag and silicon steel sheet are isolated and are arranged, described plastic parts is fixedly connected with housing.
4. brushless electric machine according to claim 3, it is characterized in that: described driver module comprises the circuit board being provided with driving chip, the power supply of this circuit board is by electric pick switch control rule, and described line bag is electrically connected with circuit board.
5. brushless electric machine according to claim 4, is characterized in that: described circuit board package is on radiator one side, and this radiator is fixedly connected with housing.
6. brushless electric machine according to claim 5, is characterized in that: described radiator another side is provided with the radiation tooth of several square.
7. brushless electric machine according to claim 4, is characterized in that: be axially provided with rib along described radiator perisporium, rib is provided with the groove passed through for one end described in power transmission shaft.
8. brushless electric machine according to claim 3, it is characterized in that: described rotor comprises the stacked pillared rotor silicon steel sheet coordinated with described stator silicon steel sheet, the perisporium of this rotor silicon steel sheet axial end is embedded with magnetic links, is coated with rotor jacket at rotor silicon steel sheet and magnetic links periphery.
9. brushless electric machine according to claim 1, is characterized in that: described in power transmission shaft, the other end is provided with radiator fan.
10. brushless electric machine according to claim 9, is characterized in that: between radiator fan and described stator, be provided with plastic barrier ring plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076392.4A CN104659999A (en) | 2015-02-13 | 2015-02-13 | Built-in double-insulation brushless direct-current motor used for high-power electric breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076392.4A CN104659999A (en) | 2015-02-13 | 2015-02-13 | Built-in double-insulation brushless direct-current motor used for high-power electric breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104659999A true CN104659999A (en) | 2015-05-27 |
Family
ID=53250797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510076392.4A Pending CN104659999A (en) | 2015-02-13 | 2015-02-13 | Built-in double-insulation brushless direct-current motor used for high-power electric breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104659999A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762387A (en) * | 2016-04-11 | 2016-07-13 | 洁星环保科技投资（上海）有限公司 | Carbon dioxide circulating type water-hydrogen power pickaxe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1671029A (en) * | 2004-03-19 | 2005-09-21 | 日本电产芝浦株式会社 | Brushless DC motor |
| CN203406762U (en) * | 2013-08-21 | 2014-01-22 | 舟山市东海电机实业有限公司 | Direct-current brushless motor |
| CN103779977A (en) * | 2013-09-23 | 2014-05-07 | 深圳市恒驱电机有限公司 | Slotless type brushless DC motor |
| CN203859663U (en) * | 2014-06-04 | 2014-10-01 | 马加良 | Brushless DC motor for running machine |
| CN104084934A (en) * | 2014-07-03 | 2014-10-08 | 长沙启科电子有限公司 | Novel intelligent control direct-current brushless electric pick |
| CN104184229A (en) * | 2014-08-29 | 2014-12-03 | 南京磁谷科技有限公司 | Motor stator and winding method for motor stator |
| CN204538932U (en) * | 2015-02-13 | 2015-08-05 | 长沙启科电子有限公司 | A kind of built-in pair of isolated dc brushless electric machine for high-power electric pick |
-
2015
- 2015-02-13 CN CN201510076392.4A patent/CN104659999A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1671029A (en) * | 2004-03-19 | 2005-09-21 | 日本电产芝浦株式会社 | Brushless DC motor |
| CN203406762U (en) * | 2013-08-21 | 2014-01-22 | 舟山市东海电机实业有限公司 | Direct-current brushless motor |
| CN103779977A (en) * | 2013-09-23 | 2014-05-07 | 深圳市恒驱电机有限公司 | Slotless type brushless DC motor |
| CN203859663U (en) * | 2014-06-04 | 2014-10-01 | 马加良 | Brushless DC motor for running machine |
| CN104084934A (en) * | 2014-07-03 | 2014-10-08 | 长沙启科电子有限公司 | Novel intelligent control direct-current brushless electric pick |
| CN104184229A (en) * | 2014-08-29 | 2014-12-03 | 南京磁谷科技有限公司 | Motor stator and winding method for motor stator |
| CN204538932U (en) * | 2015-02-13 | 2015-08-05 | 长沙启科电子有限公司 | A kind of built-in pair of isolated dc brushless electric machine for high-power electric pick |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762387A (en) * | 2016-04-11 | 2016-07-13 | 洁星环保科技投资（上海）有限公司 | Carbon dioxide circulating type water-hydrogen power pickaxe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104600881A (en) | Motor for directly driving electric drum | |
| CN204538932U (en) | A kind of built-in pair of isolated dc brushless electric machine for high-power electric pick | |
| CN105471210B (en) | A kind of magneto | |
| CN102891577B (en) | Switch reluctance motor | |
| CN202121398U (en) | Series excitation motor with shunt windings | |
| CN104300752A (en) | Multistage inner rotor switch reluctance motor | |
| CN204179910U (en) | A kind of electric tool brushless motor structure | |
| US20240106292A1 (en) | DC brushless motor | |
| CN207652169U (en) | A kind of high-power frequency conversion speed-regulating asynchronous motor of strong applicability | |
| CN104659999A (en) | Built-in double-insulation brushless direct-current motor used for high-power electric breaker | |
| CN202906710U (en) | Permanent-magnet synchronous motor used in electric fork-lift truck | |
| CN204068569U (en) | A kind of high-performance three phase alternating current motor | |
| CN107565749B (en) | Permanent magnet synchronous motor direct-drive car puller | |
| CN202721588U (en) | Disc type permanent magnet brushless direct current motor with iron core-free and sensor-free properties | |
| CN102468731B (en) | Stator of permanent-magnet synchronous motor | |
| CN211063431U (en) | Low-speed large-torque motor with mixed circulation cooling structure | |
| KR101719631B1 (en) | Fan and Shroud Assemble | |
| CN205123533U (en) | A disconnect -type brushless motor for high -power electric circular saw | |
| CN202906705U (en) | Low voltage asynchronous motor used in electric fork-lift truck | |
| CN102916547B (en) | Permanent magnet synchronous motor for electric forklift | |
| CN209896882U (en) | Alternating current capacitor motor with starting operation characteristic of direct current motor | |
| CN110752691A (en) | Low-speed large-torque motor with mixed circulation cooling structure | |
| CN201781398U (en) | Brushless motor | |
| CN202805134U (en) | Double-insulation variable-frequency brushless electric tool | |
| CN204231041U (en) | A kind of DC motor stator structure and canned pump direct current machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150527 |
|
| RJ01 | Rejection of invention patent application after publication |