Control valve and electrohydraulic proportional control valve with same

Abstract

The invention provides a control valve and an electrohydraulic proportional control valve with the same, belongs to the technical field of project elements, and solves the problem that the existing control valve is difficult to meet a high-performance occasion. The control valve comprises a control valve body and a gear shifting valve rod, wherein an inner side wall of a valve rod cavity I of the control valve body is provided with an oil inlet I, an oil return port I and four gear position oil outlets; and the valve rod is provided with an oil inlet communicating channel capable of communicating the oil inlet I with one of gear position oil outlets, and the valve rod is also provided with an oil return communicating channel. The electrohydraulic proportional control valve comprises a control circuit, a proportion pressure reducing valve and the control valve, wherein a proportion electromagnet of the proportion pressure reducing valve, a sensor assembly I and a sensor assembly II of the control valve are all connected with the control circuit. The control valve is suitable for four-gear-driven vehicles, and is more suitable for an accurate control operating valve group. The control valve provided by the invention has the advantages that the structure is compact, the arrangement is reasonable, the operation is convenient, and the property is stable.

Description

technical field [0001] The invention belongs to the technical field of engineering components, and relates to a valve, in particular to a control valve. [0002] The invention belongs to the technical field of engineering components, and relates to a valve, in particular to an electro-hydraulic proportional control valve with the above-mentioned control valve. Background technique [0003] After nearly 60 years of development, automatic transmissions have been widely used in various engineering vehicles and automobiles. Due to the harsh working environment, heavy workload, long working hours, and frequent gear shifts (on average every 3.6 seconds), construction vehicles have a very high labor intensity for drivers. At the same time, during the process of shifting gears, the phenomenon of shifting impact and power interruption often occurs. [0004] With the progress of society and the gradual development of economy, people have higher and higher requirements for the comfor...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the above-mentioned problems in the existing technology, and propose a control valve. The present invention mainly solves the problem of how to apply a high-performance proportional control valve

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