Multi-way valve

Abstract

The embodiment of the invention discloses a multi-way valve. The multi-way valve comprises a valve body, a first overflow valve, a second overflow valve, a third overflow valve, a first valve element,a second valve element, a first piston, a second piston, a first left end cover, a first right end cover, a second left end cover, a second right end cover, a first spring and a second spring, wherein the first valve element can be switched at the first position, the second position and the third position; when the first valve element is located at the first position, the second valve element islocated at the four position; when the first valve element is located at the second position, the second valve element is located at the fifth position; and when the first valve element is located atthe third position, the second valve element is located at the sixth position. The multi-way valve according to the embodiment of the invention is low in manufacturing cost, and can achieve automaticcontrol over a double-cylinder turnover plow.

Description

technical field [0001] The invention relates to a valve, in particular to a multi-way valve. Background technique [0002] In recent years, most areas of my country have begun to promote the application of hydraulic turning plows. Using the reversing plow for plowing has the advantages of no opening and closing ridges, high production efficiency, and energy saving. The hydraulic reversing plow uses the hydraulic system of the tractor to control the left and right plow bodies to operate alternately, so as to achieve the purpose of no opening and closing ridges. At present, the control mode of single oil cylinder is generally adopted for small turning plows, while the control mode of double oil cylinders is adopted for large turning plows. The hydraulic tilting plow controlled by double cylinders mainly includes a lifting cylinder and a turning cylinder. The two cylinders are controlled by the hydraulic system of the tractor. When the plow is in working condition, both the l...

AI Technical Summary

Problems solved by technology

The manual control type is that the tractor driver directly manipulates the manual slide valve to control the oil circuit of the lifting cylinder to lift the two-way plow first, and then manipulates the manual slide valve to change direction to control the flip cylinder to start flipping, and the plow moves the fork in the middle position to drive a The rotary valve converts the oil circuit of the oil cylinder to complete the turning and turning, and then manually manipulates the slide valve to control the extension of the lifting cylinder. When the turning control valve is turning, the tractor driver also controls the steering wheel and lifting the plow. The overturn control valve is very tense and busy to complete these actions in a short time, and the labor intensity increases; at the same time, three control slide valves (one slide valve for lifting cylinder control, one slide valve for overturn control) are required. 2 spool valves) not only complex structure, but also high cost

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