CN203233347U

CN203233347U - Intermittently on-off automatic control circuit

Info

Publication number: CN203233347U
Application number: CN 201320153963
Authority: CN
Inventors: 张强
Original assignee: Ma'anshan Port (group) Co Ltd
Current assignee: Ma'anshan Port (group) Co Ltd
Priority date: 2013-03-30
Filing date: 2013-03-30
Publication date: 2013-10-09
Anticipated expiration: 2023-03-30

Abstract

The utility model discloses an intermittently on-off automatic control circuit comprising a main circuit and a control circuit, wherein the main circuit comprises a power switch 1DK, a main contact of an AC contactor KM3 being arranged between the power switch 1DK and a motor DX; and the control circuit comprises a selector switch SA. The coils of the selector switch SA, air time delay relays 1SJ, 2SJ and 3SJ, and the AC contactor KM3 are serially connected respectively, and the switch selection end of the SA is respectively provided with coils of AC contactor KM1 and KM2. The coil of 1SJ is in series connection with the auxiliary contacts of the KM1 and KM3 and the auxiliary contact of the 3SJ, the coil of 2SJ is in series connection with the auxiliary contact of 1SJ, and the coil of 3SJ is in series connection with the auxiliary contacts of the KM1 and KM3. The coil of KM3 is in series connection with the auxiliary contacts of the 2SJ and KM1, and the serially connected auxiliary contacts of the 2SJ and KM1 are in parallel connection with the auxiliary contact of the KM2. An automatic on-off work state or a long-time work state of a motor can be selected by an operator according to work conditions, thereby reducing work time of the motor, lowering labor intensity, and being suitable for different work conditions.

Description

Be interrupted the start and stop automatic control circuit

Technical field

The utility model relates to circuit control field, specifically is a kind of interruption start and stop automatic control circuit.

Background technology

In the bulk-handling production technology of harbour, generally by crane goods (smart powder, breeze etc.) is grabbed in the funnel, fall to entering the belt feeder transportation through bell mouth again.Be the control flow, bell mouth is generally all smaller, increases flow if desired, just must install vibrating motor additional, provides vibration force the auxiliary falling speed of accelerating bulk goods by vibrating motor.In custom circuit, generally manually control machine operation by the workman, allow motor work long hours.But because vibrating motor is full-closed structure, can't dispel the heat after working long hours, motor very easily burns, and has increased labor strength.

The utility model content

The utility model purpose is exactly in order to remedy the defective of prior art, a kind of interruption start and stop automatic control circuit is provided, can be by the workman according to operating mode, select automatic discontinuous start and stop operating state or the state that works long hours of motor, reduce the machine operation time, reduce manual operation intensity, adapt to different operating modes.

The utility model is achieved through the following technical solutions:

A kind of interruption start and stop automatic control circuit is characterized in that: include main circuit, control circuit, main circuit includes mains switch 1DK, is provided with the main contacts of A.C. contactor KM3 between mains switch 1DK and the motor D X; Control circuit includes selector switch SA, selector switch SA, the coil of air time-delay relay 1SJ, the coil of air time-delay relay 2SJ, the coil of air time-delay relay 3SJ, the coil of A.C. contactor KM3 is parallel with one another respectively, the switch selecting side of selector switch SA is respectively equipped with A.C. contactor KM1, the coil of KM2, the coil of air time-delay relay 1SJ is in series with the auxiliary contact of A.C. contactor KM1, the auxiliary contact of A.C. contactor KM3, the auxiliary contact of air time-delay relay 3SJ, the coil of air time-delay relay 2SJ is in series with the auxiliary contact of air time-delay relay 1SJ, the coil of air time-delay relay 3SJ is in series with the auxiliary contact of A.C. contactor KM1, the auxiliary contact of A.C. contactor KM3, the coil of A.C. contactor KM3 is in series with the auxiliary contact of air time-delay relay 2SJ, the auxiliary contact of A.C. contactor KM1, the auxiliary contact of the air time-delay relay 2SJ of series connection mutually, the auxiliary contact of A.C. contactor KM1 also are parallel with the auxiliary contact of A.C. contactor KM2.

The utility model has the advantages that:

The utility model can be selected automatic discontinuous start and stop operating state or the state that works long hours of motor by the workman according to operating mode, reduces the machine operation time, reduces manual operation intensity, adapts to different operating modes.

Description of drawings

Fig. 1 is main circuit diagram of the present utility model.

Fig. 2 is control circuit figure of the present utility model.

Embodiment

As shown in Figure 1, 2, a kind of interruption start and stop automatic control circuit includes main circuit, control circuit, and main circuit includes mains switch 1DK, is provided with the main contacts of A.C. contactor KM3 between mains switch 1DK and the motor D X; Control circuit includes selector switch SA, selector switch SA, the coil of air time-delay relay 1SJ, the coil of air time-delay relay 2SJ, the coil of air time-delay relay 3SJ, the coil of A.C. contactor KM3 is parallel with one another respectively, the switch selecting side of selector switch SA is respectively equipped with A.C. contactor KM1, the coil of KM2, the coil of air time-delay relay 1SJ is in series with the auxiliary contact of A.C. contactor KM1, the auxiliary contact of A.C. contactor KM3, the auxiliary contact of air time-delay relay 3SJ, the coil of air time-delay relay 2SJ is in series with the auxiliary contact of air time-delay relay 1SJ, the coil of air time-delay relay 3SJ is in series with the auxiliary contact of A.C. contactor KM1, the auxiliary contact of A.C. contactor KM3, the coil of A.C. contactor KM3 is in series with the auxiliary contact of air time-delay relay 2SJ, the auxiliary contact of A.C. contactor KM1, the auxiliary contact of the air time-delay relay 2SJ of series connection mutually, the auxiliary contact of A.C. contactor KM1 also are parallel with the auxiliary contact of A.C. contactor KM2.

Embodiment

1, the delay time of supposition air time-delay relay 1SJ, 2SJ, 3SJ is 15S, and the course of work of the present utility model is:

When change over switch SA rotated to intermittent duty, contactor KM1 got electric adhesive, the normally opened contact closure of KM1, and motor contactor KM3 gets electric adhesive, and motor gets electric work.

(1) get electricly because of KM1, KM3 contactor, 3SJ gets electric, and the timing closing normally opened contact of 3SJ is through closed behind the 15S.

(2) behind the 15S, the 3SJ closure of often making war, 1SJ gets electric, and 2SJ gets electric, and the time-delay of 2SJ disconnects normally-closed contact and disconnects through behind the 15S.

(3) behind the 15S, the normally closed point of 2SJ disconnects, the KM3 dead electricity, and motor quits work.This moment the motor 30S that worked.

(4) KM3 dead electricity, 1SJ dead electricity, 3SJ dead electricity.Because of 1SJ for the time-delay break contact, through behind the 15S, 2SJ is dead electricity, at this moment, the motor 15S that quits work.

(5) behind the 15S, the normally closed of 2SJ becomes closure by disconnection, KM3 again electric, motor restarts work

Select this operating state, motor stops 15S at operation 30S--, between automatically periodic duty.

2, when change over switch rotated to when long operating state, contactor KM2 got electric adhesive, the normally opened contact closure of KM2, motor contactor KM3 gets electric adhesive, motor therefore electric and work long hours.

Claims

1. one kind is interrupted the start and stop automatic control circuit, and it is characterized in that: include main circuit, control circuit, main circuit includes mains switch 1DK, is provided with the main contacts of A.C. contactor KM3 between mains switch 1DK and the motor D X; Control circuit includes selector switch SA, selector switch SA, the coil of air time-delay relay 1SJ, the coil of air time-delay relay 2SJ, the coil of air time-delay relay 3SJ, the coil of A.C. contactor KM3 is parallel with one another respectively, the switch selecting side of selector switch SA is respectively equipped with A.C. contactor KM1, the coil of KM2, the coil of air time-delay relay 1SJ is in series with the auxiliary contact of A.C. contactor KM1, the auxiliary contact of A.C. contactor KM3, the auxiliary contact of air time-delay relay 3SJ, the coil of air time-delay relay 2SJ is in series with the auxiliary contact of air time-delay relay 1SJ, the coil of air time-delay relay 3SJ is in series with the auxiliary contact of A.C. contactor KM1, the auxiliary contact of A.C. contactor KM3, the coil of A.C. contactor KM3 is in series with the auxiliary contact of air time-delay relay 2SJ, the auxiliary contact of A.C. contactor KM1, the auxiliary contact of the air time-delay relay 2SJ of series connection mutually, the auxiliary contact of A.C. contactor KM1 also are parallel with the auxiliary contact of A.C. contactor KM2.