Pneumatically-controlled reversal valve capable of achieving automatic air pressure compensation

Abstract

The invention relates to a pneumatically-controlled reversal valve capable of achieving automatic air pressure compensation. The pneumatically-controlled reversal valve comprises a valve body, a valve base, a valve rod and a spring; the spring and the valve rod are sequentially inserted into the valve body, the two ends of the spring are connected with the inner wall of the valve body and the valve rod respectively, the valve base is connected with the opening end of the valve body, the valve body is provided with an air inlet, a first working port, a second working port and two exhaust ports, and the valve base is provided with a control port. The pneumatically-controlled reversal valve further comprises a one-way assembly, the one-way assembly is connected with a valve base groove of the valve base in an assembling mode, and the valve base groove is connected with the second working port through a valve body channel and connected with the control port through a valve base channel; the one-way assembly comprises a valve element and a Y-shaped ring, wherein the valve element is a T-shaped annular cylinder, the annular cylinder of the valve element is provided with a convex radial support ring, the Y-shaped ring is a hollow ring-shaped body and is connected with the valve element in a sleeving mode, and one support pin of the Y-shaped ring is connected with the support ring. According to the pneumatically-controlled reversal valve, the structure is simple and compact, the failure rate is decreased, self compensation of the air pressure can be achieved, and the service life is longer.

Description

technical field [0001] The invention relates to a vehicle gear shifting system, in particular to an air-controlled reversing valve for automatic air pressure compensation of a vehicle transmission. Background technique [0002] With the continuous standardization of the management of my country's road transport industry, the era of efficient and lean operation has come, which requires the industry to achieve a higher level of transportation by improving transport efficiency, reducing the weight of the vehicle body, and reducing the level of fuel consumption per unit of freight. level of profitability. Road freight users require heavy trucks to have attributes such as high speed and heavy load, light weight, good fuel economy, and high attendance rate, and product demand is gradually shifting to high-end. It is expected that heavy-duty trucks equipped with high-horsepower and more gear transmissions will become more and more mainstream, such as 16-speed, 20-speed, and 24-spee...

AI Technical Summary

Problems solved by technology

However, in actual use, the stability of the gas source at the control port, insufficient gas pressure, and gas leakage will lead to poor commutation, commutation failure, and paralysis of the entire gas circuit system and stop working.

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