CN101217258B - A brushless automatic control electric machine liquid resistance starter - Google Patents
A brushless automatic control electric machine liquid resistance starter Download PDFInfo
- Publication number
- CN101217258B CN101217258B CN2008100491008A CN200810049100A CN101217258B CN 101217258 B CN101217258 B CN 101217258B CN 2008100491008 A CN2008100491008 A CN 2008100491008A CN 200810049100 A CN200810049100 A CN 200810049100A CN 101217258 B CN101217258 B CN 101217258B
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- liquid resistance
- plate electrode
- movable plate
- automatic control
- starter
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Abstract
The invention discloses a brushless automatic control motor liquid resistance starter which belongs to the liquid starter, and aims at providing a brushless automatic control motor liquid resistance starter which not only can continuously and steadily basic constant torque soft starting, but also can repair conveniently. The technical proposal of the invention is a brushless automatic control motor liquid resistance starter comprises a movable electrode plate and a static electrode plate; wherein, the movable electrode plate which is connected with a sealing star of a ring liquid resistance box cavity which is fixedly arranged in a rotating shaft is a circular plate, and a central hole is slippingly arranged on the rotating shaft; a movable contact arranged on one surface of the end of the movable electrode plate is opposite to a static contact on a cover plate of a liquid resistance box which is electrically connected with the post head on the cover plate, and a groove is arranged on the other side of the end of the movable electrode plate; wherein, the groove bottom is a slope which is deep inside and shallow outside, and a slippingly-arranged ball is arranged in the groove; the axially convex bars which are evenly distributed on the circumference of the moving are slippingly arranged in the groove of the inner wall of the liquid resistance box, and a spring is arranged between the end surface of the moving electrode plate provided with the moving contact and the liquid resistance box cover plate. The invention is mainly used for the overloading starting motors.
Description
Technical field:
The present invention relates to a kind of liquid starter, particularly a kind of brushless automatic control electric machine liquid resistance starter.
Background technology:
In order to reduce the starting current of wound three-phase asynchronous motor, and keep the power factor of substantially invariable starting torque and starting.For a long time, be head it off, once occurred on rotor, installing and fixing resistance or frequency sensitive trheostat, but this technology respectively exists impulse current or the torque of reduction starter, can not satisfy the requirement of heavy duty load starting.03112809.2 patent of invention solved the brushless permanent reposefully continuously torque soft start problem of existing wound three-phase asynchronous motor, being fixedly set in the annular electro blocking solution case on the motor shaft of this patent radially is being provided with guide rod, the moving contact cunning fits on this guide rod relative at the fixed contact of cabinet shell with sealing-in, and moving contact is provided with resistance spring.Yet because the structure of the relative motion of dynamic/static contact is radially setting, the two ends of guide rod are connected mutually with the inside and outside wall of resistor fluid case, when electrode and resistance mechanism break down, this structure can not be keeped in repair, can only scrap by complete machine,, the user is suffered a loss because this lacks limit.
Summary of the invention:
The purpose of this invention is to provide a kind of can be continuously steadily and substantially constant torque soft start and a kind of brushless automatic control electric machine liquid resistance starter that again can convenient for maintaining.Technical scheme of the present invention is, a kind of brushless automatic control electric machine liquid resistance starter, comprise movable plate electrode and static plate electrode, it is characterized in that: the movable plate electrode that is fixed on the envelope star connection in the annular liquid resistance box chamber in the rotating shaft is a plectane, its centre bore cunning fits in the rotating shaft, relative at the fixed contact that is provided with on the side end face of movable plate electrode on the cover plate of moving contact and liquid resistance box, fixed contact is electrically connected with binding post on the cover plate, on the other end of movable plate electrode, be evenly equipped with radial slot, bottom land is interior dark outer shallow inclined-plane, be provided with sliding ball of joining in the groove, uniform axial raised line cunning fits in the groove on the liquid resistance box madial wall on the movable plate electrode periphery, is provided with spring between movable plate electrode end face that is provided with moving contact and liquid resistance box cover plate.Described fixed contact is a flexible contact, and the lead between itself and the binding post is a flexible wire.And the spring between the case lid is the spring and the spring that is distributed on the cylinder of the movable plate electrode outside that is set in the rotating shaft.The present invention has the remarkable advantage of convenient for maintaining compared with the prior art.
Description of drawings:
Fig. 1 is the structural representation of brushless automatic control electric machine liquid resistance starter of the present invention; Fig. 2 is the axial half sectional view of envelope star movable plate electrode; Fig. 3 is the left view of Fig. 2.
Embodiment:
The dynamic and static pole plate that the present invention is caused for the dynamic and static electrode that solves 03112809.2 patent of invention is disposed radially can't take out the problem of inconvenience maintenance from fluid storage tank.The present invention is provided with the envelope star movable plate electrode 10 of a circular slab, its centre bore and rotation axis 1 are movingly, on an end face of this movable plate electrode, be uniformly distributed with 6 grooves 11 along the circumference, the bottom surface of groove is shallow inclined-plane, dark outer end, a inner, 6 steel balls 12 place the chamber between groove and the case lid, join in the longitudinally guiding groove cunning that is evenly equipped with on the periphery of movable plate electrode on 3 axial raised lines 13 and casing 8 inner surfaces, the fixed contact of not establishing at movable plate electrode on the inner surface that is evenly equipped with 6 moving contacts 9 and fluid storage tank end cap 7 on the end face of groove 4 is relative, this fixed contact is a flexible contact, be connected with the compliant conductive band between six binding posts 5 on fixed contact and the above-mentioned fluid storage tank end cap, binding post 5 is connected with armature, be provided with between the end face of moving contact and the end cap at movable plate electrode and be provided with spring 2,6, the end face of movable plate electrode is provided with cylinder and places spring 6, end cap is fixedlyed connected with casing by bolt, fills resistor fluid in the casing.Have liquid injection port on the fluid storage tank body, end cap is provided with vent valve and safety valve.The structure of said flexible fixed contact is, is provided with spring 3 on insulated column fixing on the case lid, and the cylinder on the fixed contact is relative with insulation cylinder on the case lid.
Operation principle of the present invention is; when electric motor starting; owing between movable plate electrode and static plate electrode resistor fluid is arranged, the motor slow start is along with the acceleration of motor speed; steel ball 12 is under centrifugal action; outwards throw away, promote movable plate electrode and move axially, the distance of sound pole plate is reduced gradually; motor speed increases gradually after sound pole plate contact and reaches rated speed, and the present invention also can realize the soft function that stops when motor is shut down.When the dynamic and static pole plate in the resistor fluid case or other devices break down, can back-out bolt on the end cap, can easily all devices in the casing be released and overhaul or change laggard luggage and join, realized the purpose of convenient for maintaining, thus the loss of having avoided the user to cause because of the damage of the individual parts of starter is scrapped complete machine.
Claims (3)
1. brushless automatic control electric machine liquid resistance starter, comprise movable plate electrode and static plate electrode, it is characterized in that: the movable plate electrode that is fixed on the envelope star connection in the annular liquid resistance box chamber in the rotating shaft is a plectane, its centre bore cunning fits in the rotating shaft, relative at the fixed contact that is provided with on the side end face of movable plate electrode on the cover plate of moving contact and liquid resistance box, fixed contact is electrically connected with binding post on the cover plate, on the other end of movable plate electrode, be evenly equipped with radial slot, bottom land is interior dark outer shallow inclined-plane, be provided with sliding ball of joining in the groove, uniform axial raised line cunning fits in the groove on the liquid resistance box madial wall on the movable plate electrode periphery, is provided with spring between movable plate electrode end face that is provided with moving contact and liquid resistance box cover plate.
2. a kind of brushless automatic control electric machine liquid resistance starter as claimed in claim 1 is characterized in that: described fixed contact is a flexible contact, and the lead between itself and the binding post is a flexible wire.
3. a kind of brushless automatic control electric machine liquid resistance starter as claimed in claim 1 is characterized in that: and the spring between the case lid is the spring and the spring that is distributed on the cylinder of the movable plate electrode outside that is set in the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100491008A CN101217258B (en) | 2008-01-08 | 2008-01-08 | A brushless automatic control electric machine liquid resistance starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100491008A CN101217258B (en) | 2008-01-08 | 2008-01-08 | A brushless automatic control electric machine liquid resistance starter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101217258A CN101217258A (en) | 2008-07-09 |
| CN101217258B true CN101217258B (en) | 2010-09-29 |
Family
ID=39623633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100491008A Expired - Fee Related CN101217258B (en) | 2008-01-08 | 2008-01-08 | A brushless automatic control electric machine liquid resistance starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101217258B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594225B (en) * | 2012-03-16 | 2014-02-19 | 温州市曙光起动设备有限公司 | Shorting switch for starter of brushless hydraulically-damped motor |
| CN104660110A (en) * | 2015-03-24 | 2015-05-27 | 尚勤贵 | Rapid connecting and disconnecting device for motor starter |
| WO2017031663A1 (en) * | 2015-08-24 | 2017-03-02 | 尚勤贵 | Centrifugal switch and brushless liquid-resistance electric motor starter with same |
-
2008
- 2008-01-08 CN CN2008100491008A patent/CN101217258B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101217258A (en) | 2008-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20140108 |