Hydraulic-spring mechanism reversing-valve valve spool and valve bush running-in device

Abstract

The invention discloses a hydraulic-spring mechanism reversing-valve valve spool and valve bush running-in device comprising a grinding box body. A control mechanism is arranged in a lower box body of the grinding box body, a reducing mechanism is arranged in an upper box body of the grinding box body, a grinding mechanism is arranged on the reducing mechanism, and a guide mechanism is arranged on a box cover of the upper box body above the grinding mechanism. The grinding mechanism at least comprises a valve spool clamped by a set of clamping mechanism and a valve bush sleeved on the valve spool. The control mechanism is connected with the reducing mechanism through a motor to drive the valve spools in the grinding mechanism to rotate relatively to the valve bush, so that grinding of the valve spools under the action of the positioning valve bushes of the guide mechanism can be realized. The hydraulic-spring mechanism reversing-valve valve spool and valve bush running-in device is compact in design, simple in structure, easy to operate and applicable to grinding of hard-sealed parts in other industries. Conventional manual grinding technology can be replaced by the grinding device, so that grinding automation is realized.

Description

technical field [0001] The invention relates to a grinding device for metal sealing parts of a reversing valve in a hydraulic system, in particular to a grinding device for a valve core and a sleeve in a reversing valve with a hydraulic spring mechanism. Background technique [0002] With the development of the country's electric power industry in recent years, the domestic hydraulic operating mechanism is more widely used in circuit breakers. As the core component of the hydraulic operating mechanism, the quality of the valve body assembly is particularly important. The reversing valve in the valve body assembly is responsible for the division, switching and switching actions of the entire mechanism. It is required that the valve core in the closed state after an instant action must have good sealing performance between the valve core and the valve sleeve, and can bear up to 60Mpa oil pressure. The pressure does not allow any leakage. [0003] In order to ensure a good sea...

AI Technical Summary

Problems solved by technology

[0004] This grinding technology has always been manually ground by assembly workers in the clean room. Since the surface of the valve core and valve sleeve is quenched at high temperature, and the hardness is above HRC45-50, it is generally not less than 1 hour to complete this grinding operation. Due to the long grinding time and low efficiency of grinding operation, the grinding technology is labor-intensive and the quality is difficult to guarantee

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