DEVICE FOR CONNECTING INSTRUMENTS TO RAIL LINES OF HAUL Russian patent published in 2012 - IPC B61L23/16 

FIELD: transport.

SUBSTANCE: invention relates to railway automatics and teleautomatics, in particular to tone rail circuits. The device contains rail lines, track-circuit and matching transformers, diodes, band-pass filters, limiting resistor, track-circuit generator and track-circuit receiver. Additionally the device contains switching device where besides matching transformers, positive and negative poles of power source, the first and the second triple diodes and counter are provided. To rail lines via the second, the fourth and the fifth track-circuit transformers, the first band-pass filter, limiting resistor the track-circuit generator is connected, and via the first and the third track-circuit transformers the secondary windings of the first and the second matching transformers respectively are connected using terminals (1), (2) and (3), (4) of switching device. Primary windings of these matching transformers are connected with inputs of the first, the second and the third, the fourth diodes respectively. Diode outputs are connected with secondary winding of the third matching transformer, primary winding of which is connected with track-circuit receiver via the second band-pass filter using terminals (5), (6) of switching device. To the middle point of secondary winding of the third matching transformer negative pole of power source is connected. Positive pole of power source is connected with inputs of the first and the second triple diodes, outputs of which are connected with middle points of primary windings of the second and the first matching transformers. Control electrodes of the first and the second triple diodes are connected with counter outputs (2) and (1).

EFFECT: higher reliability of haul track state control.

1 dwg