SU1252225A1 - Rail track circuit - Google Patents

Description

The invention relates to railway automation and telemechanics, namely to track circuits.

The purpose of the invention is to increase reliability.

The drawing shows a circuit circuit.

The rail circuit has, on one side of the isolating joints 2, connected to the rails 1 in series and out of phase the main polarized pulse track relay 3 with contact 3.1 and an additional polar-. called track relay 4 with contact 4.1, track relay 5 with closing contact 5.1, slow-acting repeater 6 with contacts 6.1 and 6.2 of the additional polarized pulse track relay 4 connected to the first source 7 of the power through contact 4.1 of the relay 4, transmitter relay 8, through switching contacts 8.1 and 8.2 of which are connected to the rail yarns 9 on the other side from the joints 2, another power supply 10 is connected. The rail circuit has an encoder 11 with a contact 11.1 connected to source 7 in series with the winding of the transmitter relay 8 through the disconnecting contact 6.2 of the relay 6 and connected to the relay 5 block 12 of the control of the tracking relay 3, the control circuit of which includes the contact 6.1 of the relay 6, and Relay 8 is connected to power supply 7 via contact 4.1 of relay 4 and contacts 5.1 of relay 5 and 6.2 of relay 6. Source 10 is connected to the track rail 9 via contact 8.2 and resistor 13.

The device works as follows.

In the absence of a train, relays 3 and 4 operate in the block section in a pulsed mode, since rails 1 receive a pulsed, alternating-current DC power supply from the adjacent signal installation. At the same time, contact 3.1 of relay 3 closes from the pulse of direct polarity, and contact 4.1 of relay 4 with a reverse polarity pulse. From the periodic closures of contact 4.1, the pin 6 of the relay 6 attracts and holds, and from the periodic closures of the contact

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3.1 Relay 3 after contact closure 6.1. The unit 12 controls the impulse track relay 3, the output of which triggers the track relay.

5 5, through the contact which 5.1 and the contact 4.1 relay 4 turns on the transmission-. ternoy 8.

Periodic closures of contacts 8.1 and 8.2 of relay 8 include 10 polarized sprinkles of direct current into the rails 9 of the feed end from source 10 to power the next circuit. Transmission of different-polarity parcels of direct current with a free block 5 section does not distort the temporal parameters of the pulses, keeping the period of infra-low oscillations unchanged.

After the train enters the rail circuit 1 relay. 3 and 4 do not receive

20 power supply and stop periodic closures of their contacts 3.1 and 4.1. First, relay 6 releases its measles and contact 6.2 turns on the transmitter relay 8, providing parcel

25 pins 8.1 and 8.2 of bipolar pulses into the rail circuit 9, then release the measles track relay 5, fixing the occupation of the block section by train.

30 In case of damage (short circuit) of insulating joints 2, when it is possible for relays 3 and 4 to operate from the source of the 10 estimated track circuit 9, the device turns off the transmitter relay 8 and joins the current of the source 7 in relay 6, bringing the contacts 8.1

48.2. The sowing of impulses .Q owls to rails 1 and 9 and the track relay

5 may not be aroused. When moving the short circuit of the joints 2, the relay 5 also remains without current due to the open contact 6.1 in the circuit of the block 12.

Thus, in the event of damage to the insulating joints 2, it is not possible to obtain a false freedom of the block section, and the presence of two polarities in the signal current makes it possible to ensure the operation of the automatic blocking during centralized supply of wagons and to exclude the accumulator effect in the rail circuit.

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Editor N. Margolin

Compiled by S.Shurygin Tehred L. Serdyukova

Order 4579/21

Circulation A73 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proofreader V.Sinitska

Claims (1)

A RAIL CIRCUIT containing main and additional polarized pulse track relays connected to the rails sequentially and out of phase on one side of the insulating joints, a track relay, a slow-acting repeater of an additional polarized pulse track relay connected to the first power source through the make contact of an additional polarized pulse track relay relay through switching contacts of which to the rail threads on the other side of the insulating joints another power source is connected, characterized in that, in order to increase reliability, it is equipped with an encoder connected to the first power source in series with the transmitter relay winding through the disconnecting contact of the slow-acting repeater of the additional polarized pulse track relay, and the main pulse track control unit connected to the track relay relay in the control circuit of which includes contact _slow-l § repeated erator additional polarized pulse travel relay, and the transmitter relay is connected to the first power source through the NC contact of the additional polarized pulse path relay, the NC contact of the path relay and the NC contact of the slow repeater of the additional polarized pulse path relay. SU, „. 1252225