DEVICE FOR AUTOMATIC INTERLOCKING WITH TRACK CIRCUITS WITHOUT BLOCK JOINTS Russian patent published in 1998 - IPC

FIELD: railway transport. SUBSTANCE: device to control traffic on block sections includes track circuits without block joints, line relay, code-closing relay, and auxiliary relays. Front contact of first auxiliary relay is connected in series with resistor and rear contact of track relay of first track circuit receiver. First track circuit is arranged after light signal in direction of train running. Front contact is designed for shunting supply circuit of line relay. Second auxiliary relay is placed in supply circuit of indicated line relay. Code-closing relay whose rear contacts are placed in series with line relay supply circuit is connected to supply source through front contact of second auxiliary relay. EFFECT: enhanced reliability of control. 1 dwg