Gas spring is a kind of elastic element with gas as working medium, which is composed of pressure pipe, piston, piston rod and some couplings, and is filled with high-pressure nitrogen inside, because there is a hole inside the piston, the gas pressure is equal at both ends of the piston, and the cross-sectional area of both sides of the piston is different, one end is connected to the piston rod, and the other is not, and under the action of the gas pressure, it produces the pressure to the side with a small cross-sectional area, which is the elastic force of gas springs. The size of the spring force can be set by setting different nitrogen pressures or different diameters of the piston rods. Unlike mechanical springs, gas springs have a nearly linear elasticity curve. The coefficient of elasticity X of a standard gas spring is between 1.2 and 1.4, while other parameters can be defined flexibly according to requirements and working conditions.
Because of the fundamental difference in principle, gas springs have significant advantages over ordinary springs: relatively slow speed, little change in dynamic force, easy to control; the disadvantage is that the relative volume is not as small as a coil spring, high cost, relatively short life.
Gas springs are widely used for self-adjusting air suspension in commercial automobiles, buses, railroad vehicles, machinery and equipment, and building foundations. Gas springs are also known as struts, angle adjusters, air pressure rods, dampers, and so on. Categorized according to their structure and function, gas springs include free-standing gas springs, self-locking gas springs, traction gas springs, stop-at-will gas springs, swivel chair gas springs, gas pressure rods, dampers and several others. This product has a wide range of applications in automotive, aviation, medical equipment, furniture, machinery manufacturing and other fields