Control valve for automatic compressed-air brakes
A technology of compressed air and brakes, applied in the directions of brakes, automatic starting devices, control valves and air release valves, etc., can solve the problems of not overcoming the life of the sealing device, limited reliability, etc., to save the structural cost, improve the life and reliability. Effect
Inactive Publication Date: 2013-07-03
KNORR BREMSE SYST FUR SCHIENENFAHRZEUGE GMBH
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Problems solved by technology
Therefore, in principle, the problems of limited life and low reliability of the sliding covering seals are not overcome
Method used
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[0030] according to figure 1 , a control valve includes a body part 1 , a bracket 2 and a pipeline part 3 . The control valves are mounted on the rail vehicle, not shown here. Connections to the brake cylinder 4 , the air storage container 5 and the main air line 6 are connected to the bracket 2 .
[0031] A volume 23 for the control pressure S and a volume 24 for the reference pressure A are connected in or to the carrier 2 . In order to guide the compressed air between the main body part 1 and the line part 3 , the support 2 also comprises connections for the pressure R from the air storage container 5 and the additional exhaust gas channel KZE.
[0032] A non-return valve (not shown) for filling the air storage container 5 from the main air line 6 and a valve for manually venting the reference pressure A are provided at any position of the control valve.
[0033] The line part 3 is used to derive a control pressure S and a reference pressure A from the pressure of the ma...
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The invention relates to a control valve for automatic compressed-air brakes for generating a brake cylinder pressure in at least one connected brake cylinder (4) in accordance with a pressure difference between a pressure in a connected main brake pipe (L) of a train and a stored reference pressure (A), comprising a main part (1), a pipe part (3) and a support (2) having a pipe for the additional venting of air (KZE) leading from the pipe part via the support to the main part, the main part (1) comprising the following parts: a control piston (7) having a piston rod (16), said control piston being subjected, on the one hand, to the reference pressure (A) and, on the other hand, to a control pressure (S) and at least one pressure spring (13), and a compensating piston (8) that is subjected to the pressure (C) of the brake cylinder (4) against the force of at least one pressure spring (20); and a double-seat valve (10), in which an inlet valve (103) opens via a piston rod (16) when the control piston (7) approaches and an outlet valve (101) opens when the piston rod moves away, wherein the inlet valve (103) is located in an air path from an air storage reservoir (5) in the direction of the brake cylinder (4), whereas the outlet valve (101) is located in an air path from the brake cylinder (4) to the surroundings (0), wherein the main part (1) comprises a valve (11) that consists of a valve body (111), a pressure spring (112) and a valve seat (113), wherein pressure chambers are located opposite each other at the valve body (111) and valve seat (113), which are connected to the pipe for the additional venting of air (KZE) or to the brake cylinder (C), the valve body (111) being connected via a mechanical connection (114, 115) to the control piston (7) by the piston rod (16).
Description
technical field [0001] The invention relates to a control valve for an automatic compressed air brake, which is used as a function of the difference between the pressure in the continuous main air line of the train and a stored reference pressure derived from the pressure in the main air line. The differential pressure forms the brake cylinder pressure. Background technique [0002] The field of application of the invention is rail vehicle construction. Rail vehicles generally have automatic compressed air brakes, in which a reduction in the pressure in the main air line from the normal operating pressure causes the brake cylinder pressure to build up. The transfer function of the reduced pressure in the main air line to the increased brake cylinder pressure and vice versa is performed by the control valve. [0003] In addition, the control valve has other functions related to the filling, closing and venting of the volume with stored compressed air, the adjustment of the ...
Claims
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IPC IPC(8): B60T7/12B60T8/17B60T8/18B60T13/26B60T13/36B60T13/40B60T13/57B60T13/66B60T15/02B60T15/04B60T15/18B60T15/30
CPCB60T17/228B60T7/128B60T8/1705B60T8/1893B60T13/266B60T13/365B60T13/665B60T15/021B60T15/184B60T15/302
Inventor S·奇皮翁卡M·黑勒M·克鲁舍V·科里洛夫S·罗曼诺夫T·西蒙
Owner KNORR BREMSE SYST FUR SCHIENENFAHRZEUGE GMBH