SU624803A1 - Rail vehicle brake releasing device - Google Patents

Description

This invention relates to devices for automating the process of dispensing brakes, pepper, and the process of disbanding and forming trains, railway transport.

A device for releasing a brake on a rolling stock of a railway transport is known, which is connected to the main and working cavity of the air distributor l.

A disadvantage of the known device is the slow charging process in trains with a large number of trains.

A device for releasing brakes is also known, comprising a housing with channels for communication with the working and main air distributor and the atmosphere, a differential piston with a hollow rod mounted in the housing and a diaphragm dividing it into two control cavities 2j.

The disadvantages of this device include the inability to fully automate. the release process of the brakes, as well as the negative effect of the release valve on the charging process of the brake system of the train in the tail of the train, which is expressed in slowing the charge.

The purpose of the invention is to accelerate the release of the brake.

This is achieved by the fact that the control cavities of the device with the aid of a hollow rod are connected by channels with the main cavity and the atmospheric one, a valve is rigidly mounted on the diaphragm, indicating one of the control cavities with the channel of the working cavity.

The drawing schematically shows the proposed device.

Claims (2)

Channels 1 and 2 connect the device to the main and working cavities of the air distributor (not shown), and connect channels 3 and 4 to the atmosphere. It contains a housing 5, in which a valve 6 is located, the brush 7 of which is sealed with three cuffs 8. A diaphragm 9 is rigidly fixed to the stem 7, which divides the housing 5 into two cavities controlling Yu and 11. The cavity 11 is channel 12 in the stem when the position is open. valve 6 is in communication with the working chamber of Boetsuch distributor. The automatic tempering signal 4 is formed by an AC (1 potential piston 13, a hollow rod 14 of which is a spool, communicating the main air distribution valve and the atmosphere with cavities 1 O and 11 channels 3, 4, 15 and 16. The differential piston is sealed with a cuff 17 and a spring 18 The seal 14 is compacted with two 2O cuffs and has a channel 21. For manual control of the device, there is a pusher 22 with a spring 23. When charging the brake system of the train, compressed air enters channel 1 above the piston 13, which force of the spring 18 is pressed to its seat by the seal 19. Next, the compressed air through the channels 21 and 15 will go under the valve 6 and the channel 12 under the diaphragm 9 into the cavity 11. The diaphragm will protrude upwards and open the valve 6. The compressed air by the channel 2 also flows air distributor chambers. Simultaneously, the post 10 above the diaphragm 9 by channels 16 and 4 will communicate with the atmosphere. When the pressure above the piston 13 is 1.1-1.2 kgf / cm, the piston will move and compress the spring 18 and move the spool to separate the channel 21 with channel 15 and will report it with channel 16. Compressed ozduh through the channels 21 and 16 go into the cavity 10, and channels 12, 15 and 3 report the cavity 11 with the atmosphere. Diaphragm 9 facing down and closing valve 6, separating the working cavity of the air distributor with the atmosphere. A further increase in pressure in the main and working cavities of the air distributor to charge pressure, as well as a change in pressure during stepped or full service braking, will not change the position of the components and parts of the device. To release the car brake it is necessary to equalize the pressure in the main and working cavities of the air distributor. To do this, it is necessary to discharge the railroad car to O. When the pressure above the piston 13 reaches 0.2-0.3 kgf / cm, the piston will move upward, separating channel 21 with channel 16 and informing it with channel 15. As a result, the cavity U channels 16 and 4 communicate with the atmosphere, and cavity 11 channels 12, 15 and 21 communicate with. main cavity. The pressure in cavity 11 is not enough to raise valve 6. When the pressure in the line increases to 0.8-1.0 kgf / cm, the pressure in cavity 11 rises to the same value. Diaphragm 9 will be propelled upwards and valve 6 will move away from its saddle. Compressed air from the working cavity of the air distributor channels 15 and 21. will flow into the main cavity, which will accelerate the propagation of the release wave along the length of the composition. The working cavity of the air distributor will be discharged to the pressure in the main cavity. When the main cavity is discharged to zero and the working cavity is discharged to zero, which will lead to a complete release of the brake. To carry out a manual release, it is necessary to press the pusher 22, which, overcoming the resistance of the spring 23, will move the rod 7 of valve 6. The air from the working chamber of the air distributor will flow through channel 12 under the diaphragm 9 and will continue to hold valve 6 in the open position until equalization - pressure in the cavities 1O and 11 (t, i.e. to the working and main cavities of the air distributor). From the working cavity the air through the channels 15 and 3 will be released into the atmosphere. Claims An apparatus for releasing a brake of a rail vehicle, comprising a housing with channels for communication with the working and main cavities of the air distributor and the atmosphere, a differential piston with a hollow stem and a diaphragm mounted in the housing, dividing it into two control cavities, characterized by that, in order to accelerate the release of the brake, the control cavities are connected by channels of the hollow rod with channels to the main cavity and the atmosphere, and a valve is rigidly mounted on the diaphragm, with communicating one of the control cavities with the channel of the working cavity. Sources of information taken into account during the examination: 1. Catalog of the company Knorr-Bremse, Germany for 1971. X 2. For the WHERE 2164356/11, cl. In 6O T 15/52, according to which a positive decision was made in 1976. J3 gz