Closing tool for hydraulic valve

Abstract

The necking tool for the hydraulic valve comprises a base, a spring chuck, an upper seat and a spring, and a valve seat is used for installing the hydraulic valve and positioning the hydraulic valve so as to guarantee the installation precision of the hydraulic valve in the base; the spring chuck sleeves a valve sleeve of the hydraulic valve, and the middle lower part of the spring chuck is mounted in the base; an outer conical surface is arranged on the outer peripheral surface of the upper end of the spring chuck; in addition, the upper end of the spring chuck is further provided with an inward-shrinking opening capable of shrinking inwards, and the inner diameter of the inward-shrinking opening in the initial state is in clearance fit with the outer diameter of a valve sleeve of the hydraulic valve. An inner conical hole is formed in the upper seat, and the inner conical hole is sleeved on the outer conical surface of the upper end of the spring chuck; and the spring is arranged in the lower diameter end of the inner taper hole and is used for pressing and positioning the hydraulic valve upper seat in the hydraulic valve. The hydraulic valve is positioned through the base, the valve sleeve of the hydraulic valve is closed up through the elastic chuck and the upper base, the closing-up quality can be guaranteed, and the closing-up efficiency can be improved.