Emergency valve for high-speed motor train units and urban rail transit vehicles

A high-speed EMU and urban rail transit technology, applied in the field of railway vehicle braking control devices, can solve the problems of long response time, poor reliability and safety, etc., and achieve the effect of safe parking and good emergency braking response

Active Publication Date: 2013-04-17
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the above-mentioned shortcomings of the existing emergency valve in the braking process, such as long response time, poor reliability and safety, etc., and provides a high-speed motor vehicle that can meet the emer

Method used

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  • Emergency valve for high-speed motor train units and urban rail transit vehicles
  • Emergency valve for high-speed motor train units and urban rail transit vehicles

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0013] Such as figure 1 As shown, an emergency valve for a high-speed EMU and an urban rail transit vehicle, the emergency valve includes an air control valve and a solenoid valve 3 installed on the air control valve, and the solenoid valve 3 is connected to the control air circuit of the air control valve; the air control valve The valve includes a valve body component 1, a valve core component 2 and a piston 4, both the valve core component 2 and the piston 4 are set in the cavity inside the valve body component 1, and a piston spring 8 is arranged between the piston 4 and the valve body component 1, A spring seat 6 is installed at one end of the valve body composition 1, and an end cover 5 is installed at the other end, and a retaining spring 7 is arranged between the valve core composition 2 and the spring seat 6; Each gas path interface 9 communicates w...

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PUM

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Abstract

The invention relates to an emergency valve for high-speed motor train units and urban rail transit vehicles. The emergency valve comprises a pneumatic control valve and an electromagnetic valve mounted on the pneumatic control valve, the electromagnetic valve is connected with a control air channel of the pneumatic control valve, the pneumatic control valve comprises a valve body assembly, a spool assembly and a piston, the spool assembly and the piston are both mounted in an inner cavity of the valve body assembly in a sleeved manner, a piston spring is arranged between the piston and the valve body assembly, a spring seat is mounted at one end of the valve body assembly, an end cap is mounted at the other end of the valve body assembly, and a retaining spring is arranged between the spool assembly and the spring seat. Three air channel ports are arranged on the valve body assembly and are respectively communicated with the inner cavity of the valve body assembly. Emergency braking of the emergency valve is controlled by power on and power off of the electromagnetic valve, once the electromagnetic valve is powered off due to manipulation of a driver or other reasons, the emergency valve cuts off a closed circuit of a pneumatic and electric conversion valve and a relay valve and connects a closed circuit of a braking air storage cylinder and the relay valve so as to achieve emergency braking, and response time of the emergency valve to an emergency braking instruction is not longer than 0.2s.

Description

technical field [0001] The invention relates to a braking control device for railway vehicles, in particular to an emergency valve for high-speed EMUs and urban rail transit vehicles. Background technique [0002] High-speed EMUs and urban rail transit vehicles mainly use computer-controlled through-electro-pneumatic braking systems, and emergency braking is an important function of the braking system. The emergency valve is the emergency braking action control part of the braking system of high-speed EMUs and urban rail transit vehicles. It is one of the core key parts of the braking control unit. , play a key role. The existing emergency valve has a long emergency braking response time, cannot guarantee stopping within a short braking distance, and has poor reliability and safety performance. Contents of the invention [0003] The present invention aims at the above-mentioned shortcomings of the existing emergency valve in the braking process, such as long response tim...

Claims

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Application Information

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IPC IPC(8): B61H11/10
Inventor 李培署赛华松纪铅磊王凤洲
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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