SU42585A1 - Device for double-track autolock - Google Patents

Description

The present invention relates to a device for double-track auto-blocking and consists in the fact that it uses as a track relay three-position AC relays with windings and with a rotary disk in the form of a relay. The use of such a relay as a track in the device for automatic blocking on the railways can give, in comparison with the existing schemes of automatic blocking, a decrease in the number of relays and one line wire.

The drawing shows a diagram of the proposed device, and it shows only one stake double-track railway line, equipped with insulating joints between both rails on each span. Each stage A and B has its own traffic light L and, respectively, B with a three-digit signaling, controlled by the above-mentioned track relays // P and // Rz- The average magnetizing winding of each of these track relays IIPi and PR is powered from the high-voltage line through a step-down TI and track ultrasonic transformers, and the two extreme windings are connected to the contacts of the track relay following in the direction of train movement.

The automatic control of the signal chains of traffic lights AI and B is as follows. When a train is located before span A (in the drawing, train movement is received from right to left), the contacts of the traveling relays / 7Pi

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and following in the direction of motion are in the extreme right position, at which at the traffic light A, as well as on the next in the direction of motion, a green light is on, indicating that the ferry A and the next one are unoccupied. From the moment a train hits an isolating junction at ferry A, the magnetizing coil 7 of the PR relay is shunted by the train ramp and the current is depressed until the tail of the isolating junction is left at the ferry start B. Therefore, for all the time between these points, the disk and the contacts it controls are The vehicle is in the middle position, at which a red prohibitory signal is on at traffic light A, indicating that line A is busy. So that during the short-circuit time of the winding / current through the secondary winding of the track transformer T, it was not overdone great, resistance is provided in the circuit of this transformer. When the train, having passed stage A, will turn out; completely on the stretch B, then the winding / relay will receive power from the track transformer T; the /// winding circuit is closed through the rail, contact 3 of the nPz relay, which is in the middle position, capacitor Q and the line wire D. As a result, the PR-relay disk and the contacts it controls take the leftmost position, at which at the traffic light AI it will light up a yellow signal indicating a train suitable for stage A is occupied by stage following line A. In order to avoid complication of the drawing, the PR relay contacts are not indicated on it, but it is clear that they are connected to the previous track relay in the same way as indicated in con drawing acts penefJPz relay PR. The yellow light signal at traffic light A will continue until train B completely stops, when the contacts of the nuclear relay go from the middle position to the leftmost position, which will cause the winding circuit to be closed /// and short circuit of the winding //, through the line wire D, capacitor Q, contact G relays LR and other line wire B. Therefore, the relay / UR drive and contacts controlled by it will pass from the leftmost to the rightmost position, the mine is average, and as a result, at a traffic light 1, the green signal again appears. The occurrence of a short-term red signal at the transition of contacts from one extreme position to the other can be eliminated in a known manner, for example, by passing a red signal through a slow-acting relay.

In the event of any damage to the power supply high voltage line, the relays become in the blocking position, and the red signal circuit in this case can be connected by means of a special alarm relay to other power sources (for example, a battery).

It is clear from the drawing that the green signal is automatically replaced by a barrage red in the case of: 1) if one of the rails in the magnetizing relay circuit breaks, 2) if one of the line wires breaks, 3) short-circuits them, 4) breakdown of the capacitor Q, 5) an interruption in the windings of the relay, etc. The occurrence of the red signal will occur with the same damage during the burning of the yellow signal with the only difference that in the case of a broken line wire B, the yellow signal will change to red not immediately and after a short time and that is not critical.

When applying this scheme, a two-track double-track railway can supply adjacent rail circuits of the one and the other line from one track transformer. Line wire B may be taken common for all the runs between stations.

Thus, along the line of a double-track railway, in addition to the supply wires of the high-voltage line, more trilinear wires will be needed instead of four, as is the case in currently existing systems.

The subject matter of the invention.

A device for double-track auto-blocking, characterized in that it uses three-position relays with three windings as track relays, the average magnetizing winding of which is connected to the track circuit, and two extreme relays of the track relay following in the direction of train movement.