CN203687860U - Apparatus for determining position of brushes of DC motor - Google Patents
Apparatus for determining position of brushes of DC motor Download PDFInfo
- Publication number
- CN203687860U CN203687860U CN201320718302.3U CN201320718302U CN203687860U CN 203687860 U CN203687860 U CN 203687860U CN 201320718302 U CN201320718302 U CN 201320718302U CN 203687860 U CN203687860 U CN 203687860U
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- brush
- commutator
- motor
- neutral line
- magnetic
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Abstract
Provided is an apparatus for determining the position of brushes of a DC motor. The DC motor comprises a stator which generates a magnetic field of the motor. The stator comprises parts such as a magnetic pole and an excitation winding. The magnetic pole comprises a pole body stacked by silicon steel plates and a magnetic pole palm. The excitation winding is wound around a magnetic pole core. Main magnetic flux is generated in the motor after DC flows through the excitation winding. A rotor is an armature and is composed of an armature core, a commutator, and a commutator coil. The commutator is a cylinder produced by commutator segments and insulated mica sheets. Brushes are placed on a geometric neutral line. The geometric neutral line is the maximum induced voltage position measured on the commutator if magnetic excitation and rotating speed are not changed when the motor is used as a no-load generator. If no armature reaction is generated, the axis of the magnetic pole and the axis of the magnetic field are consistent such that magnetic neutral line and the geometric neutral line are consistent.
Description
Technical field
The utility model relates to definite equipment of a direct current motor brush position, belongs to direct current generator maintenance and repair class.
Background technology
As everyone knows, direct current motor brush position is extremely important, it directly has influence on the performance of motor, direct current generator that can reverse rotation is generally all in how much neutrality, the brush of Dyn. or one direction rotation also should be placed on geometrical neutral line in principle, but sometimes allow brush to have another name called carbon brush position in some positions of skew, geometrical neutral line left and right in order to adjust some characteristic of motor, but the position of skew is little.In a word, the position that brush is last, should make grade of spark on commutator.All positions of that within specialized range of the voltage regulation factor of the speed regulation of motor and rotating speed tolerance generator.Just because of brush position is important, so brush position how to confirm after brush dismounting?
Summary of the invention
The purpose of this utility model is intended to overcome the deficiency that has technology the sixth of the twelve Earthly Branches, provides a with low cost, economical, draw materials easily, principle is simple, and easy to learn being easy to do is especially best suited for rural migrant worker's maintenance of motor and repairs the definite service technique of operation shop to direct current motor brush position.
The utility model is in order to solve its technical matters, and the technical scheme of taking is:
1, definite equipment of a direct current motor brush position, it is by switch, direct supply, geometrical neutral line, magnetic pole, armature core, milivoltmeter, the magnetic pole palm, brush, field winding, the magnetic neutral line, commutator coil, commutator, commutator segment, mica sheet, A angle, the magnetic line of force, forward, reverse, brush carrier, spring, stator winding, power supply and siliconized plate composition, it is the part that produces motor-field that described direct current generator has stator, stator is divided into again magnetic pole, several parts of field copper, magnetic pole comprises pole body and the magnetic pole that siliconized plate changes, field winding is on pole core, field winding produces main flux after passing into direct current in motor, rotor, it is armature portion, it is by armature core, commutator, commutator coil composition, it is the pith that carries out energy conversion, commutator is the right cylinder of being made up of commutator segment and insulant mica sheet, brush position is to be placed on geometrical neutral line, geometrical neutral line is that motor is during as no-load generator, when its magnetic swashs and rotating speed is constant, on commutator, measure maximum induced voltage position, if there is no armature reaction, the axis in magnetic pole and its magnetic field is consistent, so the magnetic neutral line is also consistent with geometrical neutral line, but due to armature reaction, between the magnetic neutral line and geometrical neutral line, just there is an angle, A angle.The yawing moment at its A angle is just in time contrary with motor sense of rotation, the size at A angle, and along with the size of armature supply, the size of namely load and changing, armature supply is large, and A angle is just large, and armature reaction is very large to the spark at commutator place.
2, definite equipment of a direct current motor brush position, described milivoltmeter one end and the other end are connected on two adjacent groups brush, be that brush should contact well with commutator, field winding connects by switch, direct supply, magnetic pole, when alternately switching on and off switch, the pointer of milivoltmeter swings, progressively the position of shifting brush frame, the beat of pointer to zero of milivoltmeter, at this moment the position at brush place is the geometrical neutral line of brush.
3, should be first by motor separate excitation while test, make motor constant at rotating speed, exciting curent is constant, and in the constant situation of load, till when progressively the position of shifting brush rotates and reverse motor, armature voltage value equates, now the position of brush is how much neutrality of brush.
4, while test, should first make motor constant in impressed voltage value, unloaded forward and reverse in the constant situation of exciting curent, or rotate and reverse in the situation that load is constant, the progressively position of shifting brush (8), for rotating speed in situation about rotating and reverse equate till, now the position at brush place is the geometrical neutral line of brush.
5, when measuring and definite brush on geometrical neutral line time, can produce very large spark, this phenomenon is called commutation reaction, running into commutation reaction, brush can be moved to 90 ° of electrical angles toward either direction, is that brush has been positioned on adjacent geometrical neutral line.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is definite equipment structure chart of a direct current motor brush position.
Fig. 2 is a direct current motor brush position fundamental diagram of locking equipment really.
Fig. 3 is definite commutator coil of a direct current motor brush position location drawing in magnetic field.
Fig. 4 is definite commutator coil another location figure in magnetic field of a direct current motor brush position.
Fig. 5 be a direct current motor brush position determine be rotated in the forward figure.
Fig. 6 is definite reverse rotation figure of a direct current motor brush position.
Fig. 7 is definite commutator structure right view of a direct current motor brush position.
Fig. 8 is definite commutator structure front view of a direct current motor brush position.
Fig. 9 is definite commutator structure and the brush carrier schematic diagram of a direct current motor brush position.
Figure 10 is definite magnetic neutral line schematic diagram of a direct current motor brush position.
In figure, 1. switch 2. direct supply 3. geometrical neutral line 4. magnetic pole 5. armature core 6. milivoltmeter 7. magnetic poles are slapped the 8. brush 9. magnetizing coil 10. magnetic neutral line 11. commutator coil 12. commutator 13. commutator segment 14. mica sheet 15.A angle 16. magnetic line of force 17. forwards 18. and are reversed 19. brush carrier 20. spring 21. stator winding 22. power supply 23. siliconized plates
Embodiment
In Fig. 1, in the time that motor is static, by milivoltmeter (6), be connected on two adjacent groups brush (8), brush (8) must contact well with commutator (12), on field winding (9), connect the direct supply (2) with 1.5～3 volts simultaneously, switch on and off switch (1) when what replace, make main pole magnetic swash in will produce pulsating magnetic flux, namely replace and connect the electric current of field copper, the pointer of milivoltmeter (6) swings, the progressively position of shifting brush frame, on each diverse location, measure armature core (5) induced potential, when the beat of pointer to zero of milivoltmeter (6), be that pointer is almost motionless, at this moment the position at brush (8) place, be the geometrical neutral line (3) of brush (8).
In Fig. 2, commutating coil (11), brush (8) is at the geometrical neutral line (3) of two magnetic poles, and magnetic field is because of armature reaction, an angle that its magnetic line of force has inclined Dou, it is just added with self-induced e.m.f, causes larger extra current.
In Fig. 3, brush (8), along rotating contrary direction with armature, has rotated an angle A (15), now the also cutting magnetic line of Dou (16) of commutating coil (11).When A size in angle is suitable, can make induced potential just in time with just in time offset completely with self-induced e.m.f, also just not have extra current to produce, this is optimal situation.
In Fig. 4, brush has only turned a less angle along the direction contrary with armature sense of rotation, and commutator direction of motion just in time do not occur magnetic parallel with the magnetic line of force is cut effect, there is no induced potential.
In Fig. 5, Fig. 6, forward (17), reverse (18).
In Fig. 7, Fig. 8, commutator segment (13), mica sheet (14).
In Fig. 9, brush carrier (19), spring (20), commutator segment (13), commutator (12), stator coil (21) and outlet joining power (22).
In Figure 10, the magnetic neutral line (10), the magnetic line of force (16) and A angle (15).
Claims (5)
1. definite equipment of a direct current motor brush position, is characterized in that: it is by switch (1), direct supply (2), geometrical neutral line (3), magnetic pole (4), armature core (5), milivoltmeter (6), the magnetic pole palm (7), brush (8), field winding (9), the magnetic neutral line (10), commutator coil (11), commutator (12), commutator segment (13), mica sheet (14), A angle (15), the magnetic line of force (16), forward (17), reverse (18), brush carrier (19), spring (20), stator winding (21), power supply (22) and siliconized plate (23) composition, it is the part that produces motor-field that described direct current generator has stator, stator is divided into again magnetic pole (4), several parts of field copper (9), magnetic pole comprises pole body and the magnetic pole palm (7) that siliconized plate (23) changes, field winding (9) is on magnetic pole (4) iron core, and field winding (9) produces main flux after passing into direct current in motor, rotor, it is armature portion, it is by armature core (5), commutator (12), commutator coil (11) composition, it is the pith that carries out energy conversion, commutator (12) is the right cylinder of being made up of commutator segment (13) and insulant mica sheet (14), brush position is to be placed on geometrical neutral line, geometrical neutral line (3) is that motor is during as no-load generator, when its magnetic swashs and rotating speed is constant, on commutator, measure maximum induced voltage position, if there is no armature reaction, the axis in magnetic pole and its magnetic field is consistent, so the magnetic neutral line (10) is also consistent with geometrical neutral line (3), but due to armature reaction, between the magnetic neutral line (10) and geometrical neutral line (3), just there is an angle, A angle, the yawing moment at its A angle is just in time contrary with motor sense of rotation, the size at A angle (15), along with the size of armature supply, the size of namely load and changing, armature supply is large, A angle (15) is just large, armature reaction is very large to the spark at commutator place.
2. definite equipment of a direct current motor brush according to claim 1 position, it is characterized in that: described milivoltmeter (6) one end and the other end are connected on two adjacent groups brush (8), be that brush (8) should contact well with commutator (12), field winding (9) is by switch (1), direct supply (2), magnetic pole (4) connects, when alternately switching on and off switch (1), the pointer of milivoltmeter (6) swings, the progressively position of shifting brush frame (19), the beat of pointer to zero of milivoltmeter (6), at this moment the position at brush (8) place is the geometrical neutral line (3) of brush.
3. definite equipment of a direct current motor brush according to claim 1 position, it is characterized in that: should be by motor separate excitation when test, make motor constant at rotating speed, exciting curent is constant, and in the constant situation of load, till when progressively the position of shifting brush (8) makes motor forward (17) and reversion (18), armature voltage value equates, now the position of brush (8) is how much neutral (3) of brush (8).
4. definite equipment of a direct current motor brush according to claim 1 position, it is characterized in that: when test, should make motor constant in impressed voltage value, and unloaded forward (17) and reversion (18) in the constant situation of exciting curent, or forward in the situation that load is constant (17) and reversion (18), the progressively position of shifting brush (8), till in the situation of forward (17) and reversion (18), rotating speed equates, now the position at brush (8) place is the geometrical neutral line (3) of brush (8).
5. definite equipment of a direct current motor brush according to claim 1 position, it is characterized in that: when measure and definite brush (8) in the time that geometrical neutral line (3) is upper, can produce very large spark, this phenomenon is called commutation reaction, run into commutation reaction, brush (8) can be moved to 90 ° of electrical angles toward either direction, be that brush has been positioned over adjacent geometrical neutral line (3) above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320718302.3U CN203687860U (en) | 2013-11-08 | 2013-11-08 | Apparatus for determining position of brushes of DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320718302.3U CN203687860U (en) | 2013-11-08 | 2013-11-08 | Apparatus for determining position of brushes of DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203687860U true CN203687860U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320718302.3U Expired - Fee Related CN203687860U (en) | 2013-11-08 | 2013-11-08 | Apparatus for determining position of brushes of DC motor |
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| CN (1) | CN203687860U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356674A (en) * | 2015-12-31 | 2016-02-24 | 哈尔滨电机厂有限责任公司 | Automatic positioning device for neutral line of direct current motor |
| CN109599975A (en) * | 2018-04-24 | 2019-04-09 | 东风汽车电气有限公司 | A kind of starter |
| CN112401692A (en) * | 2019-08-23 | 2021-02-26 | 广东美的生活电器制造有限公司 | Food processing device, control method and control system thereof, and readable storage medium |
-
2013
- 2013-11-08 CN CN201320718302.3U patent/CN203687860U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356674A (en) * | 2015-12-31 | 2016-02-24 | 哈尔滨电机厂有限责任公司 | Automatic positioning device for neutral line of direct current motor |
| CN109599975A (en) * | 2018-04-24 | 2019-04-09 | 东风汽车电气有限公司 | A kind of starter |
| CN109599975B (en) * | 2018-04-24 | 2024-04-19 | 东风电驱动系统有限公司 | Starter |
| CN112401692A (en) * | 2019-08-23 | 2021-02-26 | 广东美的生活电器制造有限公司 | Food processing device, control method and control system thereof, and readable storage medium |
| CN112401692B (en) * | 2019-08-23 | 2023-04-14 | 广东美的生活电器制造有限公司 | Food processing device, control method and control system thereof, and readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20141108 |
|
| EXPY | Termination of patent right or utility model |