CN202550942U

CN202550942U - Dual-interlocking clockwise and anticlockwise rotation motor controller

Info

Publication number: CN202550942U
Application number: CN 201220072552
Authority: CN
Inventors: 胡蔚; 鲍平军; 胡江
Original assignee: Chengdu Zhilida Technology Co Ltd
Current assignee: Chengdu Zhilida Technology Co Ltd
Priority date: 2012-03-01
Filing date: 2012-03-01
Publication date: 2012-11-21
Anticipated expiration: 2022-03-01

Abstract

The utility model discloses a dual-interlocking clockwise and anticlockwise rotation motor controller, comprising a main circuit and a control circuit, wherein the control circuit comprises a first contactor, a second contactor, a clockwise rotation starting button, an anti-clockwise rotation starting button and a stop button, the first contactor is connected with a first serially-connected loop, the second contactor is connected with a second serially-connected loop, the first and second serially-connected loops are connected in parallel and then connected with the stop button in series to form an integral circuit, and two ends of the integral circuit are connected with two live lines. The dual-interlocking clockwise and anticlockwise rotation motor controller employs a dual-interlocking protection measure, is safer and more reliable, thereby avoiding short circuit caused by strong arc welding, not only increasing the working safety coefficient of a motor, but also having an excellent protection effect on the motor.

Description

Dual interlocking clockwise and anticlockwise motor controller

Technical field

The utility model relates to a kind of positive and negative rotating controller for motor, relates in particular to a kind of dual interlocking clockwise and anticlockwise motor controller.

Background technology

Usually adopting the interlock protection of compound button is less reliable, and owing to the long term of load short circuits or big electric current, the main contacts of contactor might " be freezed " together by strong electric arc in the real work; Or because the mechanism of contactor is malfunctioning, armature blocked and always is in attracting state, if in this case, if another contactor just in time electric adhesive, the power supply short circuit fault will take place.

Summary of the invention

The purpose of the utility model provides a kind of positive and negative rotating controller for motor that has a plurality of contacts, plays dual interlock protection effect with regard to being in order to address the above problem.

The utility model is realized above-mentioned purpose through following technical scheme:

The said control circuit of the utility model comprises first contactor, second contactor, just changes start button, counter-rotating start button and stop button; Said first contactor is connected in first series loop; Said second contactor is connected in second series loop, and said first series loop and said second series loop back that is connected in parallel is connected with two live wires respectively with the circuit two ends of stop button series connection back formation; Said first series loop is: connect with the normally-closed contact and said first contactor of said counter-rotating start button, said second contactor respectively after the said normally opened contact parallel connection of just changeing start button and said first contactor; Said second series loop is: connect with said normally-closed contact and said second contactor that is just changeing start button, said first contactor respectively after the normally opened contact parallel connection of said counter-rotating start button and said second contactor.

The said control circuit of the utility model also comprises thermal relay, connects with said stop button in the moving disconnecting contact of said thermal relay; Two power inputs of said control circuit all are connected in series with fuse.

The beneficial effect of the utility model is:

The utlity model has dual interlock protection measure, safer, more reliable, avoided being freezed and the short circuit that causes by strong electric arc, not only improved the coefficient of safety of machine operation, and motor has also been had good protective action.

Description of drawings

Fig. 1 is the circuit structure schematic diagram of the utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

Shown in accompanying drawing: the said control circuit of the utility model comprises the first contactor KM1, the second contactor KM2, just changes start button SB2, counter-rotating start button SB3 and stop button SB1; The first contactor KM1 is connected in first series loop; The second contactor KM2 is connected in second series loop, and said first series loop and said second series loop back that is connected in parallel is connected with two live wires respectively with the circuit two ends of stop button SB1 series connection back formation; Said first series loop is: connect with the normally-closed contact and the first contactor KM1 of said counter-rotating start button SB3, the second contactor KM2 respectively after just changeing the normally opened contact parallel connection of start button SB2 and the said first contactor KM1; Said second series loop is: connect with the normally-closed contact that just changes start button SB2, the first contactor KM1 and the second contactor KM2 respectively after the normally opened contact parallel connection of counter-rotating start button SB3 and the second contactor KM2.

Shown in accompanying drawing: the said control circuit of the utility model also comprises thermal relay FR, connects with stop button SB1 in the moving disconnecting contact of thermal relay FR; Two power inputs of said control circuit all are connected in series with fuse F U.

Shown in accompanying drawing: SB2, SB2 ', SB3 ' and SB3 are compound button among the figure, and power turn-on switch Q presses start button SB2, and its normally-closed contact SB2 breaks off, and make the contactor KM2 must not; Normally opened contact SB2 connects, and makes contactor KM1 get electric adhesive and self-locking, and its main contacts is closed, energized, and the motor forward starts running; The normally-closed contact of KM1 KM1 ' disconnection guarantees that further KM2 must not under this situation.

Shown in accompanying drawing: when the needs motor reverses, press reversing button SB3, its normally opened contact SB3 breaks off, and contactor KM1 outage is discharged; Main contacts breaks off, and has excised the power supply of motor, and motor cuts off the power supply and slowly stops; The normally opened contact of SB3 is closed simultaneously, because the normally closed auxiliary contact of KM1 recovers closed, makes contactor KM2 get electric adhesive and self-locking again; Its main contacts is closed, and the two-phase power supply of motor is exchanged, and motor oppositely starts running; The normally-closed contact of KM2 breaks off under this situation, guarantees the KM1 outage.

Shown in accompanying drawing: as want motor to stop, only need press stop button SB1 and get final product.

The utility model characteristics are easy to operate, can directly carry out positive and negative operation, not only safely but also reliably, therefore can be widely used in the various manufacturing machines of continuous reversible running.

Claims

1. dual interlocking clockwise and anticlockwise motor controller; Comprise main circuit and control circuit; It is characterized in that: said control circuit comprises first contactor, second contactor, just changes start button, counter-rotating start button and stop button; Said first contactor is connected in first series loop; Said second contactor is connected in second series loop, and said first series loop and said second series loop back that is connected in parallel is connected with two live wires respectively with the circuit two ends of stop button series connection back formation; Said first series loop is: connect with the normally-closed contact and said first contactor of said counter-rotating start button, said second contactor respectively after the said normally opened contact parallel connection of just changeing start button and said first contactor; Said second series loop is: connect with said normally-closed contact and said second contactor that is just changeing start button, said first contactor respectively after the normally opened contact parallel connection of said counter-rotating start button and said second contactor.

2. dual interlocking clockwise and anticlockwise motor controller according to claim 1, it is characterized in that: said control circuit also comprises thermal relay, connect with said stop button in the moving disconnecting contact of said thermal relay.

3. dual interlocking clockwise and anticlockwise motor controller according to claim 1 is characterized in that: two power inputs of said control circuit all are connected in series with fuse.