SU1428634A1 - Apparatus for controlling electric locking valve of locomotive - Google Patents

Abstract

This invention relates to rail brake systems. The purpose of the invention is to expand the functionality. The device has a pressure sensor 5 on the output manifold of the air distributor, a pressure sensor 3 in the brake line, a push-button switch 17 for releasing the brakes and logic elements AND 16 and OR 14. The switch 17 and sensors 3 and 5 are connected to the inputs of the element 16. The elements of the element OR 14 An element 16 output and an electrodynamic brake control circuit 15 are connected. The output of the element. AND 16 is connected by a feedback circuit to the switch 17. The device allows the locomotive to brake when the service brakes the train. 2 Il. i (L

Description

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The invention of otHocHTcn to rail transport, mainly to the brake systems of railway vehicles.

The aim of the invention is to expand the functionality of the device.

FIG. I depicts a pneumatic diagram of a braking system in which the control valve is integrated; in fig. 2 is an electrical block diagram of the device.

The brake system contains an air distributor 1, with one input connected to the brake line and the other to the reserve tank 2. A pressure sensor 3 is connected to the brake line.

To the outlet of the air distributor 1, there is connected a secondary reservoir 4, a pressure sensor 5 and an electric lock valve 6, which is also connected to the brake line. The output of the electric blocking valve 6 through the switching k.mapap 7 is connected with the pressure switch 8 .1. Under the influence of switching to; 1 Apane 7, a pressure relay 8 communicates the brake cylinders 9 through a reservoir 10 11 a check valve 11 with a supply line. The switching valve 7 communicates PKM1 with its other input with a tap of 12 n |) modifying brakes.

The winding of the electromagnetic valve 13 ((| m1g. 2) of the electric blocking valve 6 is connected to the output of the logic element OR 14, one input of which is connected to the output of the control circuit 15 of the electrodynamic brake, and the other input to the output of the logic element 16 One iix (U of an I 16 element is connected to the output of the pressure sensor 3 in the brake), the other to the output of the pressure sensor 5 in the output of the air distributor 1, and the third to the button switch of the locomotive brakes 17. With the third input value back The first connection is connected to the output of the logical e, the 1st terminal AND 16.

When an electrodynamic brake (resistive or regenerative) is operated, the output of the electrodynamic brake control circuit 15 via an OR 14 1I logic element triggers a signal to the solenoid valve 13 of the electroblocking valve 6. The latter turns off the air distributor I output from the control cavity (on Fig. I is not shown) pressure relay 8 and communicates the latter through a switch.: 1 Valve 7 with atmosphere, and Pressure 8 releases air from Top.MO3iiiiix cylinders 9. Pressure relay 8 operates through a switching valve en 7 un (} atil em also a crane 12 averaged- niero hormosis locomotive. When not working5

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The electrodynamic brake does not receive a signal to the solenoid valve 13 of the electric blocking valve 6 and the outlet of the air distributor 1 is connected via a switching valve 7 to the pressure switch 8. During service braking, the air from the air distributor 1 through the electroblocking valve 6 and the switching valve 7 enters the pressure relay 8 and the latter provides the filling of the brake cylinders 9 from the supply line through the non-return valve 11 and the reservoir 10. At the output of the sensor 5, a signal arrives logic circuit 16. And the second input of the logic circuit AND there is a signal from the pressure sensor 3 installed in the brake line. If it is necessary to release the autobrake of the locomotive, the button for releasing the autobrake 17 is pressed. In this case, the signal is present at all inputs of the logical element AND 16 and at its output. This signal is fed to the third input of AND 16 through the feedback circuit, so that releasing the button of the locomotive brake release 17 does not change the operation of the AND 16 logic. The output signal of the AND 16 through the OR 14 is fed to the electromagnetic valve 13 of the electric blocking valve 6. As a result, the locomotive's automatic brakes are released in the same way as the previous one. This prevents depletion of the working chamber of the air distributor, since air is not released from it into the atmosphere and the air distributor remains in the braking position. During emergency braking, when the pressure in the brake line drops below a predetermined value, the signal at the output of pressure sensor 3 disappears, at the output of logic gate 16 and at the winding of the solenoid valve 13 of the electric locking valve 6. As a result, the brake cylinders of the locomotive are refilled. When the brakes are released by the train driver of the machinist, the pressure at the outlet of the air distributor 1 and the signal at the output of the pressure sensor 5 disappear, as a result of which the coil of the electromagnetic valve 13 of the electric blocking valve 6 is de-energized.

In this way, it is possible to make a release of the auto brakes of the locomotive during service braking of the train. At the same time, the necessary movement safety is ensured, since the air distributor 1 remains in a jam. The position and fills the cylinders 9 through the pressure relay 8 in cases of failure of an electrodynamic brake or emergency braking, regardless of the position of the auxiliary locomotive crane 12 and button 17

Claims (1)

The invention The locomotive control valve blocking device containing an electrical supply circuit of the winding blocking valve with key elements, to the control inputs of which the output of the electrodynamic brake control circuit is connected, and the driver-controlled switching element, characterized in that supply with an air pressure sensor in the outlet of the air distributor feeding brake cylinders and a pressure sensor laziness of air in the brake line. the key elements are AND and OR logic elements, and the switching element is designed as a pushbutton switch, with pressure sensors and a pushbutton switch connected to the inputs of the And element, the output of which is connected to the pushbutton connected to the pushbutton switch and connected to one input of the OR element, to the other input of which the output of the Electrodynamic Brake Control Circuit is connected, and the output of the OR element is connected to the winding of the electric blocking valve. PI / PA / PELNA Magis / Pram l (ag {/ s / 77ralA