DEVICE FOR CONTROL OF THE DENSITY OF ATTACHING OF WITS TO FRAME RAILS Russian patent published in 2022 - IPC B61L5/06 B61L7/08 B61L23/00 

FIELD: switch drives control devices.

SUBSTANCE: invention relates to control devices for switch drives. The device for monitoring the tightness of the points against the frame rails contains a three-phase alternating voltage source, individual fuses for the phases of the alternating voltage, an alternating current switch motor, a neutral starting switch relay, a polarized switch start relay, transformer sensors, switch points, a switch position control relay, a control circuit transformer, a full-wave rectifier, a full-wave rectifier with current limiter, and a two-winding wag status monitoring relay. Transformer sensors with an open magnetic circuit are a U-shaped core on which two coils are installed. In this case, the electromotive force in the secondary winding of the transformer sensor is proportional to the square of the distance between the wit and the frame rail. The magnitude of the electromotive force in the secondary winding identifies the specified distance between the wit and the frame rail using a two-winding monitoring relay of the state of the wits.

EFFECT: increasing the reliability of the functioning of the control circuit of the state of the switch.

1 cl, 1 dwg