SU34014A1 - Device for automatic electrical signaling at unguarded crossings through a double track railway line - Google Patents

Description

The present invention relates to such devices for automatic electrical signaling at non-guarded crossings through a double track railway line, in which a self-closing relay is used, connected to a circuit through a normally open rail contact or through an insulated rail.

The invention consists in introducing into the scheme of such a device a normally closed rail contact located behind the crossing and serving to bring the device after signaling to its original position.

In FIG. 1 depicts the scheme of the proposed device; FIG. 2 and 3 - the same, but in a slightly different form of implementation.

At the AB crossing (Figs. 1, 2 and 3), a relay 7 is installed with two contacts — contact 2 for closing the pedal circuit and contact 3 for closing the ring circuit, and then battery 4 for powering the pedal circuit and battery 5 for feeding the ring circuit.

To activate the device, there are two rail contacts b and 7 (Fig. 1), of which the first is normally open and the second is closed.

(286).

For the other direction of the train, the same instruments are required except for the battery, which is taken as a common power supply for both alarms.

The device action is as follows. When the train passes, when the first wheel presses contact 6, the current from battery 4 will go through relay 7; its measles 8 snub talk will affect a switch that will close pins 2 and 5. Pin 5 will close battery-5 circuit via an alarm bell. The circuit of the battery 4 will now be closed through the relay 7, contact 2, contact 7 and the ground until the head of the train, having passed the crossing of the battery, presses the normally closed contact 7, which will cause the relay 7 and the ring circuit to reset.

A somewhat different form of embodiment of the proposed device is possible, in which relay 77 (Fig. 3) is applied to open contact 7 and connected via a current source 10 to an insulated rail 72 located behind the crossing.

In order to save on the consumption of the battery 5, the device can be equipped with a breaking contact P in a circuit supporting the excitation of the relay 7. The contact indicated serves to open this circuit in addition to the rail circuit.

contact 7 (Fig. 2 and 3) after closing the move.

The subject matter of the invention.

Claims (3)

1. Device for automatic electrical signaling at unguarded crossings through a double track rail line using a self-closing relay connected to a circuit through a normally open rail contact located prior to the crossing or through an insulated rail, characterized in that the circuit supporting the excitation of the relay is conducted through a normally closed rail contact 7. 2. The form of the device according to claim 1, characterized in that the relay / 7 is applied to open contact 7 and connected via a current source to an insulated rail 12 located behind the crossing (Fig. 3). 3. When the device according to paragraphs. 1 and 2 are used in a circuit that supports the excitation of a relay /, an interrupting contact P, which serves to open this circuit in addition to the rail contact 7 (Fig. 2 and 3)