Hand pilot valve with float function

Abstract

The invention discloses a novel hand pilot valve with a floating function. The novel hand pilot valve comprises a cross handle, a valve body, four proportional pressure reducing valves, a reversing valve and an electromagnetic positioning mechanism, an oil inlet hole P, an oil return hole T, a control port C and four pressure output holes M are formed in the valve body, an oil inlet hole A, an oil return hole A and a pressure output hole A are formed in each proportional pressure reducing valve, an oil inlet B, a control port B and a load sensing port are formed in the reversing valve, an oil inlet A and the oil inlet B are respectively communicated with the oil inlet hole P, an oil outlet B is communicated with the oil return hole A, the control port B is communicated with the control port C, the pressure output holes A are communicated with the pressure output holes M, and the load sensing port is communicated with an oil inlet B of one proportional pressure reducing valve. The novel hand pilot valve has the advantages that hydraulic pressure is proportionally outputted by the aid of the four proportional pressure reducing valves, reversing is controlled by the aid of the reversing valve, the floating function of a multi-way valve is controlled, and the novel hand pilot valve is simple in structure and convenient to use.

Description

technical field [0001] The invention relates to a hand pilot valve with a floating function, which belongs to the technical field of machinery. Background technique [0002] Pilot valves are widely used in modern hydraulic equipment. They can be installed on the armrest of the seat or on the console. They are used for proportional remote control of multi-way valves, pumps, motors, etc. by manual and foot control. They are used to manipulate other valves or components. And use the auxiliary valve. In the actual use process, the bulldozer or loader needs to realize multi-channel operation when bulldozing, that is, the bulldozer or loader needs to have a floating function. The pilot valve with floating function is expensive and the manufacturing process is cumbersome. Most of the current pilot valves Float function cannot be realized. Contents of the invention [0003] The purpose of the present invention is to provide a hand pilot valve with floating function, which overco...

AI Technical Summary

Problems solved by technology

In the actual use process, the bulldozer or loader needs to realize multi-channel operation when bulldozing, that is, the bulldozer or loader needs to have a floating function. The pilot valve with floating function is expensive and the manufacturing process is cumbersome. Most of the current pilot valves Unable to realize floating function

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