Hydraulic valve with valve element friction compensation function under centrifugal environment

Abstract

The present invention provides a hydraulic valve with a valve element friction compensation in a centrifugal environment. The hydraulic valve comprises a valve body, a main valve element, a reversingvalve element and a compensation valve element, during a static state, the compensation valve element blocks an oil supply cavity, illustration is carried out by taking the centrifugal environment rotating to the left side as the example, the compensation valve element is displaced under the action of centrifugal force, a sharp edge throttling port is generated between a connecting groove and theoil supply cavity and communicates with the oil supply cavity and an adjusting cavity, high pressure oil enters a pressure cavity along the adjusting cavity from the oil supply cavity, the larger thecentrifugal force is, the larger the sharp edge throttling port is, the larger the pressure in the pressure cavity is, the reversing valve element moves to the right under the action of inertia, a left reversing cavity communicates with the pressure cavity, the high pressure oil passes from the left reversing cavity to the left end face of the main valve element, the oil pressure in the left end face of the main valve element is increased, so that movement to the right of the main valve element is accelerated, the direction is opposite to the direction of the friction force applied to the mainvalve element, then the friction force is compensated, and the moving time of the main valve element is shortened.

Description

technical field [0001] The invention relates to the field of hydraulic valves, in particular to a hydraulic valve for compensating valve core friction force in a centrifugal environment. Background technique [0002] When the hydraulic actuator system runs on the centrifuge as an airborne device, if the moving direction of the moving parts is not parallel to the direction of the centrifugal force, the contact force between the moving parts and the bearing parts will increase, resulting in an increase in the friction during the movement of the parts, thus Reduced athletic performance. The hydraulic valve is the core control element of the hydraulic actuator system. After the internal main valve core is subjected to centrifugal force, relative movement occurs between the valve core and the valve sleeve or between the valve core and the valve body. The friction force will be greatly increased, and the existing hydraulic valves working in the centrifugal environment will have p...

AI Technical Summary

Problems solved by technology

[0002] When the hydraulic actuator system runs on the centrifuge as an airborne device, if the moving direction of the moving parts is not parallel to the direction of the centrifugal force, the contact force between the moving parts and the bearing parts will increase, resulting in an increase in the friction during the movement of the parts, thus reduced athletic performance

The hydraulic valve is the core control element of the hydraulic actuator system. After the internal main valve core is subjected to centrifugal force, relative movement occurs between the valve core and the valve sleeve or between the valve core and the valve body. The friction force will be greatly increased, and the existing hydraulic valves working in the centrifugal environment will have problems such as increased dead zone range, higher starting pressure, and slower response speed because the friction force cannot be compensated, and even cause the spool Seizure prevents the hydraulic system from working properly

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