SU1268453A1 - Stop valve device for supply line of railway vehicle section - Google Patents

Abstract

This invention relates to railway rolling stock braking systems, in particular, to locking devices of a feed line. The purpose of the invention is to increase reliability. The locking device includes a housing in which a piston 12 is installed with a calibrated channel 14 connected by a rod I5 with a locking element 16 of the valve. The piston 2 and the element 16 delimit three cavities. The cavity above the piston I2 communicates with the reservoir 18 and through the calibrated channel 19 - with the supply line 5 and the cavity under the element 16. In the cavity between the piston 12 and the element 16 connected to the connecting sleeve 8, a spring 17 is installed. With a sharp drop in pressure in the sleeve 8 the piston I1 under the action of pressure in the reservoir I8 presses the element I6 to the valve seat and the pipe 5 is disconnected from the sleeve 8. 1 sludge.

Description

C ± D- (EZI

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This invention relates to brake systems of a railway subfloor composition, mainly locomotives.

Invention spike — improving locking device reliability

The drawing shows a schematic diagram of the brake system of one of the sections of a multi-section railway vehicle, for example, the head section of a locomotive, with a locking device in the feed line.

The brake system contains compressor I, main tanks 2, driver’s crane 3, auxiliary locomotive brake crane 4, feed line 5, brake line 6, line 7 of brake cylinders. The connecting sleeve 8 with an end valve connects the feed line 5 to the feed line of the trailer section (not shown). The connecting sleeve 9 connects the brake cylinder line 7 with the trailer section brake cylinder line (not shown). Brake line 6 and line 10 of the auxiliary locomotive brake are also connected to the corresponding lines of the trailer section by connecting hoses.

Between the supply line 5 and the connecting sleeve 8 is placed a locking device 1t, which contains a piston 12 sealed with a rubber cuff 13 and has a calibrated 1st through-channel 4. The piston 12 is kinematically connected by a rod 15 with a locking element 16 that separates the feeding line 5 and the connecting sleeve 8. Moreover, the spring 17 constantly acts on the piston 2. The cavity above the piston 12 is connected to the air reservoir 18, which serves to increase the volume of the piston space, and an additional calibrated channel 19 in a device housing with a supply line 5. Washers-chokes with narrowed holes (not shown) are installed at the tips of lines 7 and 10.

The proposed brake system works as follows.

When the end valve of the sleeve 8 is closed, the air from the operating compressor I enters the main tanks 2, then through the feed line

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whether 5 to the crane 4 of the auxiliary brake and the crane 3 of the driver, as well as into the cavity of the node with locking elements 16 and the additional calibrated channel 19 into the cavity above the piston 12 and into the air reservice 18. As in the initial state nopnie.Hb 12 is moved in the upper position by the spring 17 and the locking element 16 is open, the air approaches the coupling arm 8.

If we connect the supply lines of the two sections and open the end valves, the piston of the locking device I drops due to a sharp drop in pressure under the piston I2, which decreases due to the addition of additional volume. After the air pressure in the connecting hoses and air tank

18 is equalized due to the flow of air through the calibrated channel 14, the force of the spring 17, the piston 12 and the locking element 16 move upwards, connecting the feeding lines of both sections to a wide channel.

In the case of self-distributing sections, the pressure in the cavity under the piston 12 drops sharply. The air does not have time to flow through the capybapillary channels 14 and

19 out of tank 8 to the feed line. Under the action of the pressure difference, the piston 12 is mixed downward, overcoming the force of the spring 17, and the locking element 16 sits on its seat, stopping the discharge of the feed line 5 to the atmosphere.

The ability of the crane 4 auxiliary locomotive brake to feed leaks from the brake cylinders allows braking of the detached section with an auxiliary locomotive brake in the presence of the 1X line 7 of the throttle washers.

Claims (1)

Invention Formula . A shut-off device for the supply line of a railroad vehicle section, comprising a housing with an inlet channel for connecting to the feedline and an outlet channel for connecting to the ry sleeve, a spring-loaded piston with a calibrated through channel, installed in the valve body and bearing a stop valve element, , with J 12684534 in order to increase its reliability, the port-inlet canopy and, by means of complement, with a shut-off element of a valve of Three cavities are bordered, and the cavity is above the piston, while the piston and the locking element are equipped with an air reservoir connected to the outlet channel, and 5 Rum connected to the cavity above the piston under the locking element - sleeping.