A double-port electro-pneumatic valve

A technology of electro-pneumatic valves and valve ports, which is applied in the direction of brakes, transportation and packaging, and brake transmission devices, etc. It can solve problems such as low wave speed, inability to realize phase braking and phase relief of train brake cylinders, and large longitudinal impulse of trains.

Active Publication Date: 2017-12-05
MEISHAN CRRC BRAKE SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the pure air brake transmits the braking information by the fluctuation of the pressure of the brake pipe, the wave speed is low, resulting in poor braking synchronization of different vehicles, and the longitudinal impulse of the train is large, so it is impossible to realize the phase braking and phase relief of the train brake cylinder

Method used

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  • A double-port electro-pneumatic valve
  • A double-port electro-pneumatic valve
  • A double-port electro-pneumatic valve

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention is described in detail.

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] Such as Figure 1-4 As shown, a double-port electropneumatic valve includes a valve body 1, and an upper cover 2, a double rubber valve stem 3, an inflation valve seat 4, a control piston 5 and an exhaust valve seat are arranged in the valve body 1. 6. The upper part of the double rubber valve stem 3 is placed in the upper cover 2, and a valve stem return spring 7 is arranged in the upper cover 2, between the double rubber valve stem 3 and the upper cover 2, and the inflatable valve seat 4...

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Abstract

The invention discloses a double-valve-port electric pneumatic valve. The double-valve-port electric pneumatic valve comprises a valve body, and an upper cover, a double-rubber valve rod, an inflating valve base, a control piston and an exhaust valve base are arranged in the valve body. The upper portion of the double-rubber valve rod is located in the upper cover, and a valve rod reset spring is arranged at the position, between the double-rubber valve rod and the upper cover, in the upper cover; the inflating valve base is located below the upper cover and matched with a rubber valve element on the upper portion of the double-rubber valve rod to form a control valve port A, the control piston is located below the double-rubber valve rod, and the upper end of the control piston is matched with a rubber valve element on the lower portion of the double-rubber valve rod to form a control valve port B; the exhaust valve base is located below the control piston, and a piston reset spring is arranged between the control piston and the exhaust valve base. Opening and closing of the double valve ports are controlled according to the working state of a brake solenoid valve and a release solenoid valve, graduated brake and graduated release of a brake cylinder are achieved by means of the amplification function of the double valve ports, and therefore the brake cylinder has the functions of electric control brake, electric control release and pressure maintaining.

Description

technical field [0001] The invention belongs to the technical field of railway train braking control, and in particular relates to a double valve port electropneumatic valve. Background technique [0002] Existing railway trains mainly use a pure air braking system, that is, the air pressure change of the brake pipe and the brake distribution valve is used to control the filling and exhausting of the brake cylinder, so as to realize the braking control of the railway train. Since the pure air brake transmits the braking information through the fluctuation of the brake pipe pressure, the wave speed is low, resulting in poor braking synchronization of different vehicles, and the longitudinal impulse of the train is large, so it is impossible to realize the phase braking and phase relief of the train brake cylinder. Contents of the invention [0003] The purpose of the present invention is to solve the above problems, to provide a double-valve electro-pneumatic brake cylinder...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/68B60T13/36
CPCB60T13/365B60T13/683
Inventor 刘亚梅蒋勇申燕飞唐琦赖宏刘保华
Owner MEISHAN CRRC BRAKE SCI & TECH CO LTD
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