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Trailer control valve

A control valve and control port technology, applied in the field of auto parts, can solve the problems of air pressure signal transmission rate hysteresis, slow brake response, long air pressure pipeline, etc., to improve brake coordination, meet safety requirements, and improve comfort sexual effect

Inactive Publication Date: 2014-12-10
ZHEJIANG VIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The trailer control valve conventionally used in the air brake system is usually a double-circuit air pressure control to provide the brake signal for the trailer pipeline, but due to the lengthy air pressure pipeline and the delay in the transmission rate of the air pressure signal, the brake response is slow.

Method used

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Examples

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Embodiment Construction

[0022] Such as figure 1 As shown, the trailer control valve of the present invention includes a nut 1, a bolt 2, a base plate 3, a cover 4, a large piston 5, a steel wire retaining ring 6, a piston sleeve 7, a push rod piston 8, a compression spring 9, and a retaining ring 10 for a hole. , guide piston 11, gasket 12, main piston 13, controller housing 14, circuit board 15, air guiding rod 16, muffler housing 19, booster valve 22, pressure reducing valve 23, backup pressure valve 24, valve body 25, The valve body is provided with an inner cavity, and the inner cavity of the valve is provided with a service brake cavity, a large piston return cavity, a booster cavity, an air outlet cavity, and a parking cavity in sequence from top to bottom. Air intake port 1A, air supply port 21A, air outlet port 22A, exhaust port 3A, driving control port 42A and parking control port 43A.

[0023] Nut 1 and bolt 2 securely connect the bottom plate 3 with the valve body 25; the cover 4 is insta...

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Abstract

The invention discloses a trailer control valve which comprises a valve body with an inner cavity. A travel brake cavity, a large piston return cavity, a booster cavity, an air outlet cavity and a parking cavity are formed in the inner cavity of the valve body from top to bottom in sequence, an air inlet, an air supply opening, an air outlet, an exhaust port, a travel control opening and a parking control opening are communicated with the inner cavity of the valve body and are formed in the valve body, a pressure increasing valve, a pressure reducing valve and a pressure preparing valve which are communicated with one another are arranged on the valve body, the air inlet is communicated with an air cylinder of a motor tractor, the air supply opening is communicated with the air inlet through a throttling valve and outputs air pressure to an energy supply pipeline of a trailer, the air outlet is communicated with the air inlet through a combined valve, and the combined valve is a normally-closed valve and is controlled by the travel control opening / the parking control opening. Double-loop control of electric control signals and air control signals is adopted, the electrical control over the trailer control valve is achieved, the defect that in the traditional air pressure control process, due to the fact that the pipeline is long, air pressure signals are slow to transmit is overcome, and the vehicle brake response time is shortened.

Description

technical field [0001] The invention relates to auto parts, in particular to a trailer control valve. Background technique [0002] The conventionally used trailer control valve in the air brake system is usually a double-circuit air pressure control to provide a brake signal for the trailer pipeline. However, due to factors such as long air pressure pipelines and hysteresis in the transmission rate of the air pressure signal, the brake response is slow. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an electric-pneumatic coupling control trailer control valve, improve the braking response, and at the same time realize the adaptation of the braking force distribution and the load distribution, improve the braking coordination between the tractor and the trailer, Improves the comfort of deceleration control. [0004] In order to solve the above technical problems, the present invention adopts the following techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T15/02
Inventor 陈锋钟焕祥苑庆泽郝亚伟
Owner ZHEJIANG VIE SCI & TECH
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