SU438568A1 - Device for changing the direction of movement of trains on the stretch - Google Patents

Description

one

The invention relates to the field of railway transport and can be used in a device for signaling, centralizing and blocking railway transport.

Devices are known for changing the direction of movement of trains on a stretch, comprising a station direction relay, the windings of which are connected via contacts of electromagnetic relays and inductive choke to a two-conductor communication line, separation capacitors, a relay free condition relay and power sources, and at each signal installation distillation two-winding relay, directional capacitors, and normally closed contacts of the path relay, connected in series in each of the wires two-wire link. However, the known devices have low reliability and complex design.

The purpose of the invention is to increase the reliability and simplify the device.

The proposed device, in contrast to the known ones, is equipped at the station with a high-frequency generator and a filter, the inputs of which are connected to the terminals of the winding of the control relay of the free condition of the haul, and the outputs through serially connected front contacts of the station direction relay

and separation capacitors are connected to a two-wire communication line, the high-frequency generator outputs are connected to the two-wire communication line through the rear contacts of the station direction relay, the windings of the directional relay on each signal installation are connected to the two-wire communication line separately, and the beginning and end of the first winding the direction relays are connected to the same terminals of the separation capacitors of each wire of the communication line, to the other terminals of which through a normally closed contact track relays are connected, respectively, the beginning and end

the second winding of the directional relay, the wires of the two-wire communication line are connected to each other through a normally open (rear) contact of the track relay. A schematic diagram of the device is shown in FIG. 1 and 2.

The device includes a directional relay 1 with a contact li, a station relay 2 directions with contacts 2i and 22, a high-frequency generator 3, contacts 4 of the track relay, separation capacitors 5 and 6 on the span and station, filter 7, relay 8 of the span control with contacts 8i and 82 in the control circuit, button 9 for changing the direction of movement, auxiliary relay 10 with contacts lOi, 102 and Yuz, repeaters AND, 12, 13

station direction relays with contacts 13j 132, 13з and 134, repeater 14 relay of the free condition of the stage with contacts 14i, 142, 14z, 144 and 145 in the electric circuit and slow acting repeater 15 of the free state of the stage with contacts 15, 152, 15z and 154.

Similar devices installed at station B are numbered with the same numbers as at station A, but with a stroke.

Logical communication between stations limiting the stage is made via one two-wire linear channel formed by wires 17 and 18. In the above diagram, station A is set to receive and station B to send. In this case, the circuit for switching on the direction relays is normally closed and receives power from station A. Direction relays 1 and 2 are connected in series at signal stations and at the dispatch station and flow around normally, reliably holding their core in the appropriate position.

The span control circuit is powered by an alternating current of a frequency of 2-3 kHz from station B from generator 3. With free span, when the contacts of 4 track relays of block segments are closed, the alternating current passes through these contacts, separation capacitors 5 and 6 are fed to the input of the filter 7 with an amplifier, the output of which is included relay 8 control overhaul. The transfer resistance of the linear circuit during free span is minimal and the span control relay is energized. In the case of a train departure for a haul, the track relay is de-energized and its contacts 4 switch to the haul control circuit. This circuit is connected in series with the windings of the direction relays. As a result, the transfer resistance of the linear circuit increases, and the relay control 8 of the ferry stage releases its measles, fixing the occupation of the ferry. The channel for switching on the directional switch remains unchanged, and the directional switch flows around the current.

The circuit for switching on the equipment at the signal installation is designed so that the operability of any element is monitored.

It is impossible to change the direction of train movement in the event of damage, since the normal operation of the channel of the directional relay or control of the haul is disturbed.

Changes the direction of train movement at the receiving station during the free stretch. For this, the change direction button 9 is pressed and the contact is closed. When checking the free condition of the haul (contacts 8i and 82), the auxiliary relay 10 is triggered, which, after operation, is self-blocked via contact 10 and contacts 102 and Yuz changes the polarity of the supply voltage in the directional switching circuit. Direction relays 1 and 2 at signal installations and at the departure station switch their polarized contacts. Polished

contact 2i opens the control circuit of the output traffic lights of station B. This station has been switched from sending to receiving. Repeaters 11 and 12 switch the equipment 5 signal installations in the opposite direction. The contact turns off the relay 10 and turns on the repeater 13 of the directional switch. The latter, by its contacts 13i and 132, turns off the power from the control channel

10 haul. Auxiliary relay 10 with a slowdown releases its measles.

Linear channel of station B is connected to the linear channel of direction through the contacts 102, 13z and Yuz, 134 (terminals LBB and

15 LMB). Batteries of stations A and B add up. Relay 8 control station at station A releases its measles. Its repeaters 14 and 15 are turned off. The contacts 14i and 142 turn off the power from the linear value. To line

0 connects a direction relay 2, which by its contact 22 opens the repeater 13 power supply circuit. Through contacts 13i and 132 and contacts 16i and 1b2 of the closing relay of sending, a generator 3 is connected to the linear circuit. Relay 10 then receives power through contact 22. Relay 2i relay 2 direction closes the control circuit of the output traffic lights. The change of direction has ended. Station L is transferred to departure, and Station B is received. Similarly, the relay operates when changing the direction of movement from station B. A device for changing the direction of movement allows the introduction of an auxiliary mode of changing the direction of movement in case of damage to a separate rail circuit.

Subject invention

0 A device for changing the direction of train movement on a stretch, comprising a station direction relay, the windings of which are connected via contacts of electromagnetic relays and an inductive choke to

5 two-wire communication lines, isolating capacitors, a relay control of a free condition and power sources, and at each signal installation - a distillation two-winding direction relay, isolating capacitors and normally closed contacts of a path relay connected in series to each of the wires of a two-wire communication line, characterized in that, in order to increase reliability

5 and simplifying the device, it is equipped at the station with a high-frequency generator and a filter, the inputs of which are connected to the terminals of the control winding of the free condition of the haul, and the outputs through serially connected front contacts of the directional relay and separation capacitors are connected to the two-wire communication line the contacts of the station relay direction to the two-wire line; 5 Research institutes of communication connected to the generator outputs

high frequency, the windings of the directional relay at each signal installation are connected to a two-wire communication line separately, with the beginning and the end of the first winding of the directional relay being connected to the same terminals of the separation capacitors of each wire of the communication line,

to other terminals of which the beginning and the end of the second winding of the directional relay are connected via the normally closed contact of the track relay, the wires of the two-wire communication line are connected to each other via the normally open (rear) contact of the track relay.

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