Multi-way valve and hydraulic distributor thereof

Abstract

The invention discloses a multi-way valve and a hydraulic distributor thereof. The multi-way valve comprises a control valve and the hydraulic distributor which are connected. The hydraulic distributor comprises a distributor body and a distributor core capable of linearly sliding along an inner cavity of the distributor body in a reciprocating manner. The distributor body is provided with a plurality of distributor connectors which are arrayed at intervals in the longitudinal direction, and the projections of the distributor connectors in the cross section coincide. The distributor core is provided with a longitudinal flow channel and two distribution ports. The longitudinal flow channel comprises a first longitudinal flow channel section and a second longitudinal flow channel section which are not communicated, the first distribution port is communicated with the first longitudinal flow channel section and corresponds to the first distributor connectors in position, and the second distribution port is communicated with the second longitudinal flow channel section and corresponds to the second distributor connectors in position. According to the multi-way valve, the multi-way hydraulic distribution function can be achieved only by adopting one control valve and one hydraulic distributor which is connected with the control valve and can be connected with multiple execution parts, the structure is greatly simplified, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of hydraulic pressure, in particular to a hydraulic distributor and a multi-way valve using the hydraulic distributor, especially suitable for agricultural machinery and engineering machinery. Background technique [0002] Multi-way valves are used to control the movement of multiple actuators (such as oil cylinders or oil motors), and are widely used in tractors and other agricultural machinery and construction machinery. The traditional multi-way valve, its principle is as follows figure 1 As shown, other functional valves are connected behind the multi-way valve. The multi-way valve includes multiple connected three-position six-way valves. Each valve of the multi-way valve is composed of a three-position six-way valve. Each three-position six-way valve The through valve is used to connect an executive part of the machine, and the movement of the three-position six-way valve is driven manually or by two ...

AI Technical Summary

Problems solved by technology

The traditional multi-way valve, its principle is as follows figure 1 As shown, other functional valves are connected behind the multi-way valve. The multi-way valve includes multiple connected three-position six-way valves. Each valve of the multi-way valve is composed of a three-position six-way valve. Each three-position six-way valve The through valve is used to connect an executive part of the machine, and the movement of the three-position six-way valve is driven manually or by two electromagnets. figure 1 The 6 / 3-way valve is shown in the neutral functional state, figure 2 and image 3 It is the functional state diagram of the three-position six-way valve in the other two positions; the structure of each valve of the multi-way valve with this structure is basically the same, and only one valve can work at a time, when one of the multi-way valves When working, the other functional valves connected behind must be in the unloading state. With the increase of the number of valve circuits, the structure of the multi-way valve becomes more and more complex and bulky, especially the structure of the three-position six-way valve driven by the electromagnet. Two solenoids, making the whole multi-way valve expensive

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