Gas spring characteristics:
The gas spring is a kind of labor-saving lifting spring, which can be divided into self-locking gas springs (such as the bottom lift of the seat, the backrest of the boss chair, etc.) and the gas springs (such as the trunk and closet of the car) that cannot be self-locked. Support) The structure of the gas spring is mainly composed of a sleeve, a piston, a piston rod, etc. High-pressure air or high-pressure nitrogen gas is added into the sleeve. Due to the difference in area between the two ends of the piston, a pressure difference is generated, and the piston and the piston rod are moved and supported. Or heavy objects.
First, the free gas spring (support gas) is the most widely used gas spring. It mainly plays a supporting role, only the shortest, the longest two positions, unable to stop on their own during the trip. In the automotive, textile machinery, printing equipment, office equipment, construction machinery and other industries the most widely used. Free-type gas springs are widely used in automobiles, construction machinery, printing machinery, textile equipment and other industries due to their features of light weight, smooth operation, convenient operation, and favorable price. Or high-cold environment, acidic or alkaline environment.
Second, self-locking gas springs (regulators, controlled gas springs) (Lockable gas spring) in the application of medical devices most. This type of gas spring can be stopped at any position in the stroke by means of some release mechanisms, and there is a large locking force after stopping (can reach more than 10000N).
Third, free air suspension spring (friction type gas spring, balanced gas spring) is mainly used in kitchen furniture, medical equipment and other fields. It features between a free-type gas spring and a self-locking gas spring: it does not require any external structure and can stop at any position in the stroke without additional locking force. Mainly through the controller (handle or pull wire) to achieve results. Can also be achieved through the expansion and contraction of the piston rod. When the controller is stopped at the desired position, the valve will close independently and the piston rod will lock in the desired position. When the lock occurs, the lock can be achieved. However, if the locking force is exceeded, the locking function will no longer be effective.
Fourth, rotating chair gas springs (pressure bar) is mainly used in swivel chair, play a role in adjusting the position. Its characteristics are controllable and the demand is relatively large.
5. Gas traction springs (Gas traction springs) are special gas springs: other gas springs are in the longest position when they are in the free state, that is, they are the longest after they are subjected to external forces. The position moves to the shortest position, and the free state of the traction type gas spring is in the shortest position, and the traction type runs from the shortest point to the longest point. Traction gas springs also have corresponding free type, self-locking type, etc.
6. The Damper is used more often in automobiles and medical devices. Its characteristic is that the resistance changes with the speed of operation. It can obviously buffer the speed of the connected mechanism. The damper is mainly used for buffering, and its greatest feature is that the force of the gas spring changes with the speed of movement. When the point of action of the force that guides the gas spring moves faster, the resistance of the spring increases significantly, and when the point of action moves very slowly, there is little resistance. Dampers are mainly used in washing machines, refrigerators and other industries.
In addition, there are ordinary steel gas springs and stainless steel gas springs. The largest amount of ordinary steel gas springs, stainless steel gas springs are used in more demanding environments, such as food machinery, medical equipment, military industry, high temperature characteristics and applications.