Valve rod of multi-path valve and multi-path valve with valve rod

Abstract

The invention provides a valve rod of a multi-path valve and the multi-path valve with the valve rod and belongs to the technical field of machinery. The valve rod and the multi-path valve solve the problem that the phenomenon of empty sucking of the existing multi-path cylinder cannot be eliminated, the cylinder is unstable in operation, and service life and integral performance of sealing members are influenced. The multi-path valve comprises a valve body and the valve rod arranged in the valve body, wherein an ascending working cavity, a descending working cavity, an oil inlet cavity and an oil return cavity are arranged in the valve body, a first guide assembly with an ascending guide opening and corresponding to one end of the valve rod is arranged on the valve body, and a second guide assembly with a descending guide opening and corresponding to the other end of the valve rod is arranged on the valve body; and by means of a first communication groove, a second communication groove and a third communication groove on the valve rod, the ascending working cavity can be communicated with the oil inlet cavity, the oil inlet cavity can be communicated with the oil return cavity, and the descending working cavity can be communicated with the oil return cavity or the oil inlet cavity. The multi-path valve can achieve energy recovering during descending of the oil cylinder, avoids the phenomenon of empty sucking of the descending working cavity caused by fast descending of the oil cylinder and prolongs service life of the oil cylinder.

Description

technical field [0001] The invention belongs to the technical field of engineering components, and relates to a hydraulic valve, in particular to a valve stem of a multi-way valve. [0002] The invention belongs to the technical field of engineering components, and relates to a hydraulic valve, in particular to a multi-way valve. Background technique [0003] A multi-way valve is a combination of more than two valve blocks to manipulate the movement of multiple actuators. Because it can combine various valves according to the requirements of different hydraulic systems, it has compact structure, simple pipeline, small pressure loss and convenient installation, so it is widely used in construction machinery, lifting and transportation machinery and other operations requiring multiple operations. Walking machinery and other fields where an actuator moves. In the field of construction machinery, such as excavators, loaders, forklifts and other working cylinders are in the pro...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned problems in the existing technology, and propose a valve stem of a multi-way valve and a multi-way valve with the above-mentioned valve stem. The technical problem to be solved is: the oil cylinder of the existing multi-way valve The phenomenon of air suction cannot be eliminated, which will easily lead to unstable movement of the oil cylinder, which will affect the life of the seal and the overall performance of the whole machine

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