Single pumping tilt cylinder valve

Abstract

The invention discloses a single pumping tilt cylinder valve. The single pumping tilt cylinder valve comprises a valve body, the first switching valve cavity is formed in the valve body, a first valve element capable of axially moving in a reciprocating mode is arranged in the first switching valve cavity in a matched mode, the valve body is connected with a pumping pilot electromagnetic valve, and the pumping pilot electromagnetic valve is used for controlling the first valve element to act; the second switching valve cavity is formed in the valve body, a second valve element capable of axially moving in a reciprocating mode is matched in the second switching valve cavity, and a tilt cylinder pilot electromagnetic valve is connected to the valve body and used for controlling the second valve element to act so that the second oil inlet can be switched and communicated with the third oil outlet or the fourth oil outlet; the first switching valve cavity or the second switching valve cavity is communicated with the oil inlet end of the pumping pilot electromagnetic valve and the oil inlet end of the tilt cylinder pilot electromagnetic valve. The single pumping tilt cylinder valve is small in size, simple and compact in structure, low in production cost and fast in switching oil supply reaction, and can provide enough space for assembly of other accessories.

Description

technical field [0001] The invention relates to the technical field of hydraulic control systems of construction machinery, in particular to a single pumping swing cylinder valve. Background technique [0002] In the field of construction machinery and construction machinery, there are many equipment such as pump trucks, excavators, loaders, excavators, etc., that need to use oil cylinders to bear loads or perform actions, and the actions of oil cylinders are generally controlled by control valves. ; For example, when the pump truck is working, the pumping cylinder and the swinging cylinder need to act alternately, and the alternating action between the pumping cylinder and the pumping cylinder and the alternating action between the pumping cylinder and the swinging cylinder need to be controlled by the pumping main valve That is, the pumping main valve controls the mortar pump to supply oil to the pumping cylinder or the swing cylinder, so as to realize the alternating acti...

AI Technical Summary

Problems solved by technology

The valve body of the integrated pumping main valve or swing cylinder valve of the prior art is provided with two switching valve chambers, especially when the pumping main valve and the swing cylinder main valve are integrated together, four switching valve chambers must be arranged in the valve body. Valve cavity, so the internal structure of the valve body is extremely complex, and the production cost is high; the assembly space of other components inside the valve body, such as on-off valves and pressure relief valves, is narrow, which is not convenient for installation and distribution; and the valve body is large in size and insufficient in structure compact

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