A multi-functional manual reversing valve capable of both self-resetting and positioning

Abstract

The invention belongs to the technical field of hydraulic control valves, and particularly relates to a multifunctional hand-operated direction valve with capabilities of self resetting and positioning. The problem that a spring of a valve element of a reversing valve cannot be reset and positioned simultaneously can be solved. The multifunctional hand-operated direction valve with capabilities of self resetting and positioning comprises a reversing valve element, and is characterized by further comprises a valve element positioning control device, the valve element positioning device comprises a positioning valve body, a valve element resetting spring, a positioning rod, a positioning piston and a piston resetting spring; the valve element resetting spring, the positioning rod, the positioning piston and the piston resetting spring are arranged in the positioning valve body; the valve element resetting spring sleeves and end of the reversing valve element; the reversing valve element is connected with the positioning rod; the positioning piston is perpendicular to the positioning rod; an oil inlet I is formed in the valve body and corresponds to the top end of the positioning piston; an oil inlet II is further formed in the valve body, and communicates with a channel with the bottom end of the positioning rod through an oil duct; and a piston resetting spring and a shaft shoulder are arranged on the positioning piston. Hydraulic oil is used as a hydraulic spring, under the combined action of the hydraulic oil and the traditional spring, an automatic resetting mode and a positioning mode of the hand-operated direction valve is switched, and therefore, using requirements under complicated working conditions are met.

Description

technical field [0001] The invention belongs to the technical field of hydraulic control valves, and in particular relates to a multifunctional manual reversing valve capable of self-resetting and positioning. The invention provides a method and a device for realizing that a manual reversing valve can not only be automatically reset by a spring, but also can be positioned. Background technique [0002] Manual reversing valve is a valve that uses manual levers and other mechanisms to change the relative position of the valve core and valve body to achieve reversing. Manual reversing valves are usually divided into two types: spring automatic return type and positioning type. For the spring automatic return type manual reversing valve, when the operating handle is released, the valve core returns to the normal position under the action of the spring. This kind of reversing valve cannot be positioned at other working positions. It is suitable for frequent actions and long worki...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the spring reset and positioning type of the spool of the reversing valve cannot be balanced, the present invention provides a solution that can not only be automatically reset by the spring, but also be positioned by a hydraulic control positioning mechanism.

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