Fixing device for valve spring tests

Abstract

The invention provides a fixing device for valve spring tests. According to the invention, a vertical support bar is fixedly arranged on a base and is fixedly provided with a horizontal cross bar; a guide bar is arranged between the cross bar and the base and located at the inner side of the support bar; the guide bar is slidably connected with a pressing plate; the pressing plate is rotatably connected with a screw capable of driving the pressing plate to move up and down; a nut in threaded cooperation with the screw is fixedly arranged on the cross bar; the upper end part of the screw is fixedly provided with a handwheel; floating jaws are arranged below the pressing plate; and fixed jaws are arranged on the base and below the floating jaws. The screw is allowed to move up and down through rotation of the screw under driving of the handwheel. The pressing plate located below and rotatably connected with the screw is placed at an appropriate height and then the fixed jaws and the floating jaws are operated to fix the upper end and lower end of a valve spring respectively, so the valve spring is fixed. The handwheel is rotated to allow the pressing plate to slide up and down along the guide bar. Since the valve spring is fixed on the pressing plate, the purpose of testing is achieved by compressing the valve spring via the pressing plate.

Description

technical field [0001] The invention relates to an experimental device, in particular to a valve spring experimental fixing device. Background technique [0002] The valve spring refers to the spring used on various valves. The valve spring determines the opening pressure, the stroke of the disc and the stability of the seal in the closed state in the valve. The spring in the valve spring determines the normal operation of many check valves, safety valves, safety valves and other various valves. The spring determines the cracking pressure, the stroke of the disc and the stability of the seal in the closed state. The selected material needs to strictly guarantee the high temperature resistance, service life, stability, corrosion resistance and other requirements of the spring. The valve spring determines the opening pressure, the travel of the disc and the stability of the seal in the closed state in the valve. If there is a problem with the spring, it will be difficult for ...

AI Technical Summary

Problems solved by technology

The valve spring determines the cracking pressure, the stroke of the disc and the stability of the seal in the closed state. If there is a problem with the spring, it will be difficult for the entire valve to operate normally.

[0003] Ordinary valve springs are generally compression springs, which are produced by steel wire winding. For environments with high assembly requirements and strict mechanical properties, conventional steel wire wound springs cannot meet the needs of use well, so it is necessary to consider New processing methods and new structures to produce valve springs under special conditions of use

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