Gas spring is a kind of elastic element with gas and liquid as working medium. It is composed of pressure tube, piston, piston rod and some connecting parts, It is filled with high-pressure nitrogen. Because there are through holes in the piston, the gas pressure at both ends of the piston is equal, and the cross-sectional area of both sides of the piston is different. One end is connected with a piston rod, but the other end is not. Under the action of gas pressure, the pressure to the side with small cross-sectional area is generated, that is, the elastic force of the gas elastic spring.
The elastic force can be determined by setting different nitrogen pressure or different diameter of the piston Plug the rod. Different from mechanical spring, gas spring has almost linear elastic curve. The elastic coefficient X of standard gas spring is between 1.2 and 1.4, and other parameters can be flexibly defined according to requirements and working conditions