SU1504139A1 - Ce device for switch - Google Patents

Abstract

The invention relates to urban electric transport and can be used in automatic control devices for tram switch drivers. The purpose of the invention is to increase reliability. This is achieved by the fact that the time relay 1, prior to the release of the control section, is without current and its contact 22, connected to the circuit of contactor 3, provides blocking of coils 5 and 6. 1 sludge.

Description

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The invention relates to urban electric transport and can be used in automatic control devices for three-way arrow drives.

The purpose of the invention is reliability.

The drawing shows the electrical circuit of the proposed device.

The device contains time relay 1, start-up 2 and blocking 3 contactors connected to the contact wire A, two solenoidal drives with coils 5 and 6 connected to the negative power bus, blocking relay 7, one output connected to the contact wire and the negative power bus through a resistor 8. Air inlet pin 9, connected to one of the terminals of the starting block 2, resistor 10, connected to the blocking circuit

contactor 3, output air con

cycles 11 and 12 connected to another output of the blocking relay, stabilized 13 and capacitor 14, connected to the winding of the blocking relay, resistor 15, connected to the blocking circuit, disconnecting 16 and closing contacts 17 of the contactor 2, included in the coil circuit 5 and 6, the closing and opening contacts 18 and 19 of the blocking relay included in the relay circuit 7 and 1, the closing contact 20 of the blocking relay 7 and the closing contact 21 in the circuit of coils 5 and 6, and the closing contact 22 of the time relay and the contact circuit 3

The device works as follows.

After the relay 7 trips, the contact 20 closes and the closing circuit of the interlocking contactor 3 is connected, which connects the voltage 21 to the coils 5 or 6 to the power contact 21. The relay 1 is timed enough for triggering Katug 5 or 6 to release the switch.

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contact 22 contactor 3. contactor 3 contact 21 removes the voltage from the coil 5 or 6. Blocking the switch is carried out using relay 1 and 7. Before releasing the control portion of the path, relay 7 will be turned on and relay 1 off, providing a trip 22 contactor 3 and thereby implemented the lock transfer arrows.

Relay 7 is turned off during the passage of the current collector of the train under the air contacts 12 and 11 when the switch switches off the train, since in this case both terminals of the relay coil 7 are at the same potential.

Thus, the reduction in the number of air contacts favorably distinguishes the proposed device for controlling the switch from the known one, since the reliability of operation of the device increases and the laboriousness of its operational maintenance decreases.

Claims (1)

Invention Formula A switch control device containing a time relay, one winding terminal connected to the contact wire, a blocking relay, one of the winding terminals of which is connected to the output air contacts and connected via a negative power bus resistor, resistor, capacitor, and air inlet contact, characterized in that, in order to increase reliability, another output of the winding of the time relay is connected to the negative power bus via a break contact of the locking relay, the other output of the winding of which connected to the contact wire directly, a resistor is connected between the first output winding of the blocking relay and the air inlet contact, and a capacitor is connected in parallel with the winding of the blocking relay.