CN2513290Y - Reversable magnetic starter - Google Patents
Reversable magnetic starter Download PDFInfo
- Publication number
- CN2513290Y CN2513290Y CN 01268577 CN01268577U CN2513290Y CN 2513290 Y CN2513290 Y CN 2513290Y CN 01268577 CN01268577 CN 01268577 CN 01268577 U CN01268577 U CN 01268577U CN 2513290 Y CN2513290 Y CN 2513290Y
- Authority
- CN
- China
- Prior art keywords
- button
- motor
- contactor
- utility
- model
- 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.)
- Expired - Fee Related
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- Motor And Converter Starters (AREA)
Abstract
The utility model relates to a reversable magnetic starter which is mainly used for directly controlling the front direction and reverse direction rotation of the motor in general production machine. The utility model is different with the severable magnetic starter which is only provided with a composite interlock. When the front direction or reverse direction button is pressed directly, the utility model has the advantages of preventing the motor from reverse connecting with the braking current and having no phenomenon of too short shifting time of the connector. The utility model is characterized in that two intermediate relays are added, so that one connector can be released by pressing the button, while the other connector can only be closed by releasing the button. The utility model is suitable to be used in the production sites which need the motor to frequently change the operation direction.
Description
Technical field
The utility model relates to the reversible magnetic starter that is mainly used in the forward and reverse running of motor in the general manufacturing machine of direct control.
Background technology
Reversible magnetic starter is generally combined by two contactors and a thermal relay, cooperates with this device with three buttons in addition, with the just commentaries on classics of control motor, reverse and stop.If motor needs the frequent changes rotation direction, in order to enhance productivity, need not press stop button when requiring operation, directly can commutate by the forward or reverse button, current prior art realizes this requirement by the compound interlocking of contactor and button is set.Here sincerely so that " related content that the 481st～485 page of practical maintenance electrician's handbook one book (Shanghai science tech publishing house publishes in December, 1993) and " newly organized practical eelctrical engineering handbook " book (Beijing science tech publishing house publishes in April, 2000) are the 661st, 662 page is a card.Production practices show, only depend on compound interlocking is set realizes that directly commutation remains 2 weak points.The first: be disconnected to the closed shared time of normally opened contact from normally-closed contact for the forward or reverse button, be difficult to control during operation, this time is too short, motor is not stopped operating just connect the commutation power supply, thereby bigger plug braking electric current appears, like this to electric power system, to motor itself, mechanical driving device etc. is all had adverse effect.It two is: certain contactor is if time-delay discharges behind the coil blackout, and this contactor discharges just adhesive immediately and the self-locking of back another contactor, and the electric arc of this main noddle on contactor causes phase fault easily like this.
The utility model purpose
The purpose of this utility model provides a kind of reversible magnetic starter that can prevent motor plug braking electric current and the too short phenomenon in contactor shifting time interval can not occur when directly commutating by the forward or reverse button.
Technical scheme and description of drawings
The operation principle of reversible magnetic starter provided by the utility model as shown in drawings.Pressing when needing motor just changeing just changes button SB1, and auxiliary relay KA1 is adhesive and self-locking at first, unclamps positive contactor KM1 adhesive and self-locking behind the SB1, and motor begins just to change.Press invert button SB2 when needing the motor commutation counter-rotating, KA1 at first discharges, then KM1 discharges and makes the motor outage, auxiliary relay KA2 adhesive and self-locking afterwards, by the time motor unclamps SB2 when stopping operating (being the manufacturing machine stop motion), counter-rotating contactor KM2 adhesive and self-locking, motor begin counter-rotating.Press SB1 once more when needing motor commutation just changeing once more, unclamp SB1 after the motor stall, motor promptly begins just to change once more.
Beneficial effect
When pinning forward or reverse button when commutation, hand does not unclamp, and motor just can not connected the commutation power supply, and the motor hand that do not stop operating just not unclamps, so reversible magnetic starter provided by the utility model can prevent motor plug braking electric current.After a contactor discharges (comprising that time-delay discharges), the another contactor only remains the auxiliary relay adhesive of being correlated with, relevant control button could adhesive after resetting, so the too short phenomenon in contactor shifting time interval can not appear in reversible magnetic starter provided by the utility model.
Execution mode
In actual production, the manufacturing cost of reversible magnetic starter is usually well below the manufacturing cost of its manufacturing machine of controlling, so the technical scheme that the utility model proposed can not lose practical value because of reversible magnetic starter needs a small amount of manufacturing cost that increases.Reversible magnetic starter should be contactor KM1, KM2 in the accompanying drawing during actual the manufacturing, auxiliary relay KA1, KA2, and the combination of thermal relay RF.Also these components and parts and control button SB1～SB3 and fuse FU1, FU2 can be combined, thereby form another series of reversible magnetic starter.
Claims (1)
- A kind ofly also be mainly used in the forward and reverse running of motor in the general manufacturing machine of direct control, be reversible magnetic starter capable of reversing directly also by the forward or reverse button, its technical characterictic is: can prevent motor plug braking electric current and contactor shifting time too short phenomenon at interval can not occur when guaranteeing to press the commutation of forward or reverse button, the spy sets up two relay of merely hitting, whenever a relay of merely hitting uses two secondary normally opened contacts, one pair is used as the self-sustaining of this relay, another pair seals in corresponding contactor coil loop, so a contactor can discharge when pressing the button, can adhesive behind the another contactor button to be released.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268577 CN2513290Y (en) | 2001-11-21 | 2001-11-21 | Reversable magnetic starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01268577 CN2513290Y (en) | 2001-11-21 | 2001-11-21 | Reversable magnetic starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2513290Y true CN2513290Y (en) | 2002-09-25 |
Family
ID=33674744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01268577 Expired - Fee Related CN2513290Y (en) | 2001-11-21 | 2001-11-21 | Reversable magnetic starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2513290Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166538A (en) * | 2013-04-03 | 2013-06-19 | 安徽理工大学 | Reversible magnetic starter of general power-driven multi-turn execution mechanism |
-
2001
- 2001-11-21 CN CN 01268577 patent/CN2513290Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166538A (en) * | 2013-04-03 | 2013-06-19 | 安徽理工大学 | Reversible magnetic starter of general power-driven multi-turn execution mechanism |
| CN103166538B (en) * | 2013-04-03 | 2015-11-04 | 安徽理工大学 | Reversible magnetic starter of general power-driven multi-turn execution mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |