Control circuit for interlocking of elevator contactors
A contactor interlocking and control circuit technology, applied in elevators, transportation and packaging, etc., can solve the problems of complex structure, short circuit of power supply and high energy consumption
Inactive Publication Date: 2015-06-17
TIANJIN FEIMEITONG ELEVATOR
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Problems solved by technology
[0002] The contactor of the elevator is used to frequently turn on the motor. It is one of the important components in the elevator. The interlock of the elevator contactor is to prevent the motor from running forward and then accidentally pressing the reverse button or the forward contactor. Because the contacts cannot be reset and the reverse button is pressed again, the two contactors are in the pull-in state at the same time, resulting in a short circuit of the power supply. Therefore, the elevator is equipped with a control circuit for the interlocking of the elevator contactors. Traditionally used Due to the problems of unstable operation, high energy consumption and complex structure in the control circuit of elevator contactor interlock
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[0007] Below in conjunction with accompanying drawing, the present invention will be further described: as figure 1 As shown, the present invention is a control circuit for elevator contactor interlocking, including a first switch Q1, a second switch Q2, a third switch Q3, a first fuse FU1, a second fuse FU2, and a third fuse FU3, the first resistor R1, the second resistor R2, the third resistor R3, the first button switch S1, the second button switch S2, the third button switch S3, the motor M, the normally closed contact switch KM1 of the first contactor- 1. The normally closed contact switch KM2-1 of the second contactor, the normally open contact switch KM1-2 of the first contactor, the normally open contact switch KM2-2 of the second contactor, the first contactor of the first contactor A switch KM1-3, the second switch KM1-4 of the first contactor, the third switch KM1-5 of the first contactor, the first switch KM2-3 of the second contactor, the second switch of the seco...
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The invention discloses a control circuit for interlocking of elevator contactors. The control circuit comprises a first switch, a second switch, a third switch, a first fuse, a second fuse, a third fuse, a first resistor, a second resistor, a third resistor, a first button switch, a second button switch, a third button switch, a motor, a normally-closed contact switch of a first contactor, a normally-closed contact switch of a second contactor, a normally-open contact switch of the first contactor, a normally-open contact switch of the second contactor, a first switch of the first contactor, a second switch of the first contactor, a third switch of the first contactor, a first switch of the second contactor, a second switch of the second contactor, a third switch of the second contactor and a thermal relay. The first contactor is electrified and closed, and the motor rotates forwards; the first contactor is locked; firstly the motor stops running; then the second contactor is electrified and closed, and the motor rotates reversely; the second contactor is locked. According to the invention, when the motor rotates forwards, the first contactor is locked; when the motor rotates reversely, the second contactor is locked, and therefore the control circuit can work stably.
Description
technical field [0001] The invention relates to a control circuit of a contactor, in particular to a control circuit for elevator contactor interlocking. Background technique [0002] The contactor of the elevator is used to frequently turn on the motor. It is one of the important components in the elevator. The interlock of the elevator contactor is to prevent the motor from running forward and then accidentally pressing the reverse button or the forward contactor. Because the contacts cannot be reset and the reverse button is pressed again, the two contactors are in the pull-in state at the same time, resulting in a short circuit of the power supply. Therefore, the elevator is equipped with a control circuit for the interlocking of the elevator contactors. Traditionally used The interlocking control circuit of the elevator contactor has the problems of unstable operation, high energy consumption and complex structure. Contents of the invention [0003] The object of the...
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Login to View More IPC IPC(8): B66B1/34
CPCB66B1/3415
Inventor 郝以彬
Owner TIANJIN FEIMEITONG ELEVATOR