CN2083795U - Alarm electric brush - Google Patents
Alarm electric brush Download PDFInfo
- Publication number
- CN2083795U CN2083795U CN 90224333 CN90224333U CN2083795U CN 2083795 U CN2083795 U CN 2083795U CN 90224333 CN90224333 CN 90224333 CN 90224333 U CN90224333 U CN 90224333U CN 2083795 U CN2083795 U CN 2083795U
- Authority
- CN
- China
- Prior art keywords
- brush
- electric brush
- alarm
- motor
- height
- 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.)
- Withdrawn
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- Motor Or Generator Current Collectors (AREA)
Abstract
The utility model discloses an alarm electric brush, which utilizes the alarm circuit installed inside the electric brush body to notice related personnel the alert height of the electric brush, which alleviates the complicated work of operating personnel, thus, the alarm electric brush is suitable to be used in medium-size can type motor. The alarm electric brush is mainly composed of a static contact 3, a moving contact 4, a pull-cord 7 and a spring 6.
Description
The invention relates to the reform of the employed brush of medium-sized winding motor.
Brush is the sliding contact part that is used for conduction current on the commutator of motor or the collector ring, and it is synchronously and use very extensive in the motor of asynchronous, AC and DC.Its major function is good connection of dependence and commutator or collector ring and the armature circuit that rotates or rotor circuit and motionless external circuit are coupled together.The whether intact of it will directly influence the normal operation of motor and the life-span of motor.
But,, often limited the inspection of operating personnel to brush owing to reasons such as the residing position of motor, the residing environment of motor, the residing operating states of motor.
To wound motor, under normal circumstances, along with continuity and the accumulation of machine operation time, the height of brush then reduces because of wearing and tearing.In the time of near wearing up to brush carrier, will produce spark because of spring pressure reduces between slip ring and the brush, and and then to cause second open circuit.
Under abnormal conditions, owing to motor long-time running wearing and tearing cause slip ring uneven or not round; Since brush pressure uneven and more renew grind behind the brush bad; Owing to the oil droplet on the bearing or other foreign material such as fall between slip ring and the brush at reason, all can cause to cause spark between brush and the slip ring, and will make a highly normal brush very quick-wearing near brush carrier, can cause second open circuit equally.
The objective of the invention is, a kind of novel brush is provided, no matter making the brush of motor is when standing long-term normal wear or the inordinate wear in short-term, brush can both remain on the height of the safety that the pressure of one and spring adapts, thereby avoids the motor second open circuit.
The present invention is improved on the basis of original brush and is realized function that it is new.
The present invention guarantees the working depth of brush within 8 represented warning height.No matter which kind of reason in case reach the warning height, is sent warning immediately, notify the relevant personnel.
If the height of brush is H, warning height 8 is 2/3 H.
Deciding contact 3 is fixed on loam cake 2 Shang ， And and relies on screw and brush body 1 to be linked together.
The present invention is improved on the basis of original brush and is realized function that it is new.
The present invention guarantees the working depth of brush within 8 represented warning height.No matter which kind of reason in case reach the warning height, is sent warning immediately, notify the relevant personnel.
If the height of brush is H, warning height 8 is 2/3 H.
Decide contact 3 and be fixed on the loam cake 2, and rely on screw and brush body 1 to be linked together.
Under normal circumstances, sit on 5 at the bottom of backguy 7 is positioned at moving contact through anchor point 8 holddown springs 6 and moving contact 4.This moment, dynamic/static contact was in open position, and auxiliary relay can not get electric, can not send alarm signal, and motor runs well.
When thereby wear of brush to 2/3 H reached the warning height, warning circuit was started working.Backguy 7 rubs and thereby retracting spring 6 makes the dynamic/static contact closure, and auxiliary relay gets electric, sends alarm signal, notifies the relevant personnel to change brush, has realized the purpose of alarm and protection motor.
Compare with brush with simple function, alarm type brush can momentarily, exactly, automatically monitor the abrasion condition of brush, and it can make operating motor safety and alleviate operating personnel because of the brush height being monitored the loaded down with trivial details work that brings more.
Claims (1)
1, can monitor the alarm type brush of wear of brush situation, it is characterized in that: the warning circuit formed of the spring 6 that compresses through warning height 8 by fixed contact 3 moving contacts 4 and backguy 7 installed of portion within it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90224333 CN2083795U (en) | 1990-11-29 | 1990-11-29 | Alarm electric brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90224333 CN2083795U (en) | 1990-11-29 | 1990-11-29 | Alarm electric brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2083795U true CN2083795U (en) | 1991-08-28 |
Family
ID=4901927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90224333 Withdrawn CN2083795U (en) | 1990-11-29 | 1990-11-29 | Alarm electric brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2083795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319251C (en) * | 2004-03-31 | 2007-05-30 | 丰田自动车株式会社 | Device for judging brush state of motor |
-
1990
- 1990-11-29 CN CN 90224333 patent/CN2083795U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319251C (en) * | 2004-03-31 | 2007-05-30 | 丰田自动车株式会社 | Device for judging brush state of motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |