Empty and load valve for vehicle

An empty-heavy vehicle valve and vehicle technology, which is applied in the field of rail transit, can solve the problems of difficulty in meeting the use requirements of the vehicle braking system, difficulty in adjusting the proportional relationship, etc., and achieves the effect of high integration and compact overall structure.

Active Publication Date: 2022-03-01
QINGDAO SRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to adjust the proportional relationship between the pre-control pressure of the valve brake pre-control pressure of the existing empty-load vehicle and the air spring pressure, and it is difficult to meet the requirements of the vehicle braking system.

Method used

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  • Empty and load valve for vehicle
  • Empty and load valve for vehicle
  • Empty and load valve for vehicle

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Embodiment Construction

[0076] In order to make the technical problems, technical solutions and beneficial effects to be solved by 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.

[0077] The invention provides an empty vehicle valve for a vehicle, which includes a valve seat 1, a valve core assembly, a push rod 6, an exhaust valve body 8, an adjustment sleeve 17, a first spring 15, a second spring 16, a casing 20 and other components .

[0078] The structure of valve seat 1 is as follows. The base body of the valve seat 1 is provided with a through hole 101 through the thickness direction of the base body, and is further provided with: an air spring air passage 102 connected to the air spring, a pre-control pressure inlet air passage 103 co...

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PUM

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Abstract

The invention provides an empty and load valve for a vehicle. The empty and load vehicle valve comprises a valve seat, a valve element assembly, an ejector rod, a pressure containing cavity, a first spring, a second spring and the like. The valve seat is provided with four air path hole channels, namely an air spring pressure air path, a pre-control pressure inlet air path, a pre-control pressure outlet air path and an outlet pressure feedback air path. The structure that the force transmission rod is matched with the spring is adopted to achieve balance of air pressure, and the proportional relation between pre-control pressure and air spring pressure can be adjusted by designing the large spring seats of different sizes, the area of the acting ejector rod and the area of the force transmission rod. The initial pre-tightening force of the first spring and the second spring can be adjusted through the shell sleeve and the stop lever, so that the minimum pre-control pressure is set, the pre-control pressure is finely adjusted, the braking pre-control pressure can be accurately adjusted along with the pressure change of the air spring, and automatic adjustment of the braking force along with the vehicle load change is achieved.

Description

technical field [0001] The invention relates to the technical field of rail transit, and relates to an empty-load vehicle valve for vehicles. Background technique [0002] In order to improve the transportation efficiency, the load of the vehicle continues to increase and the self-weight gradually decreases, resulting in a gradual increase in the empty-to-weight ratio of the vehicle. Therefore, the role of the empty-load vehicle adjustment device is becoming more and more prominent. With the increase of vehicle speed and the further increase of the vehicle's empty-to-weight ratio, if it is to ensure that the heavy vehicle has sufficient braking force under the condition of high speed and heavy load, it can stop within the specified distance, and the braking force of the empty vehicle will not be too high. If it is too large, to prevent the braking force from exceeding the adhesion force and causing the wheel tread to be scratched, an empty-load vehicle adjustment device is e...

Claims

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Application Information

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IPC IPC(8): B60T15/02B60T8/18
CPCB60T15/021B60T8/1831B60T8/1893
Inventor 魏灿刚石喆文赵庆刚李从元安震刘德才薛皓
Owner QINGDAO SRI TECH CO LTD
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