Brief introduction of gas spring

1, the definition and the principle of the gas spring

Gas spring (gas spring, also called gas strut or gas ejector rod) is a kind of industrial parts can support, buffer, brake, height adjustment and angle adjusting function. It consists of the following parts: (Gang Tong) pressure cylinder, piston rod, piston, sealing guide sleeve, a filler (inert gas or oil and gas mixture in the cylinder), control elements and cylinder control element (refers to the controllable gas spring) and joint etc...

The principle is in the pressure cylinder closed (Gang Tong) filled with inert gas or oil and gas mixture, so that the cavity pressure higher than the atmospheric pressure several times or dozens of times, the cross sectional area of the piston rod by the cross-sectional area smaller than the piston to produce pressure difference to realize the movement of the piston rod. Due to the fundamental principle of the pneumatic spring is different, than ordinary spring has remarkable advantages: Relatively slow speed, the dynamic force changed little (less than 1: 1.2 in general), easy to control; The disadvantage is the relatively small volume not spiral spring, high cost, relatively short life. Unlike the mechanical spring, gas spring is near linear elastic curve. The elastic coefficient of X between standard gas spring 1.2 and 1.4, other parameters can be adjusted and flexible operation definition.

According to its characteristics and application fields of the gas spring is different, also known as the supporting rod, air support, recliner, pressure rods, dampers etc...According to the structure and function of the gas spring to classification, gas spring with free type gas spring, a self-locking type gas spring, pull type gas springs, random stop gas spring, gas spring pressure bar, swivel chair, several dampers etc...At present, the products in the automotive, aerospace, medical equipment, furniture, machinery manufacturing and other fields have a wide application.

The 2 main parameters, gas spring:

A, the cylinder diameter: Refers to the reservoir gas spring cylinder diameter size, commonly used in a Phi 28mm, Phi 22mm, Phi 18mm, Phi 15mm.

B, the diameter of piston rod: Refers to the activities of thin rod diameter, commonly used in a Phi 14mm, Phi 12mm, Phi 10mm, Phi 8mm, Phi 6mm.

The total length of C, gas spring: Refers to the gas spring is extended to the maximum length, two joint center distances.

D, the travel: Is the largest distance refers to the piston rod of the gas spring can be free.

E, the support force: Generally refers to the minimum support force gas spring sometimes customers will be minimum nominal force requirements of the gas spring.