News
How does a controllable gas spring work?
- Time of issue:2022-02-23
- Views:0
可控气弹簧是怎么进行工作的？
可控气弹簧是怎么进行工作的？
How does a controllable gas spring work?
(Summary description)The working principle of the controllable gas spring is that the inert gas is used as the elastic medium, and the elastic element that is lubricated with oil and transmits the pressure is called gas spring for short. It is actually a variant of the sleeve air spring, and it was also developed to further improve the elastic properties of the sleeve air spring. Therefore, it also has the general characteristics of the air spring structure. Gas springs generally consist of cylinders, pistons, seals and external connections. High pressure nitrogen or inert gas and oil form a circuit inside the cylinder. The damping on the piston makes the rod chamber and the rodless chamber communicate, so that the pressure of the two chambers is equal. The elastic force is generated by using the difference in the force area of the two cavities and the compressibility of the gas.
- Time of issue:2022-02-23
- Views:0
Information
The working principle of the controllable gas spring is that the inert gas is used as the elastic medium, and the elastic element that is lubricated with oil and transmits the pressure is called gas spring for short. It is actually a variant of the sleeve air spring, and it was also developed to further improve the elastic properties of the sleeve air spring. Therefore, it also has the general characteristics of the air spring structure. Gas springs generally consist of cylinders, pistons, seals and external connections. High pressure nitrogen or inert gas and oil form a circuit inside the cylinder. The damping on the piston makes the rod chamber and the rodless chamber communicate, so that the pressure of the two chambers is equal. The elastic force is generated by using the difference in the force area of the two cavities and the compressibility of the gas.
The controllable gas spring has the advantages of light structure and long working stroke; smooth movement, can play the role of damping and buffering; stable and almost unchanged characteristic line; simple operation, safe and reliable. But the processing cost is high. According to the principle of the sleeve air spring, it can be known that the force of the air spring at any stroke s is: f = initial pressure in the PVA/V-AS cylinder; initial volume in the cylinder; cross-sectional area of the piston rod and the gas spring Due to different uses, the structure and type are also different.
At present, there are two kinds of controllable gas springs produced in China: non-lockable gas springs and lockable gas springs. How non-lockable gas springs work Depending on the needs of the application, non-lockable gas springs are available in compression and tension. Compressed gas spring principle Compressed gas springs are widely used in automobiles, construction equipment, medical equipment and other occasions, and mainly play a supporting role. This kind of spring has a simple structure, and the piston rod is downward in use. When the piston rod is pressed into the cylinder barrel, part of the oil in the cylinder barrel automatically flows into the cylinder cavity along with the piston rod. Due to the pressure difference across the piston in the cylinder, the piston rod is forced out. As the end point is approached, the oil in the cavity acts as a buffer. It can be seen from the annular characteristic curve formed during the stretching and compression process that the entire stroke is divided into two sections: hydraulic damping AM and pneumatic damping MD.
How good is the controllable gas spring? Below we will provide several simple and effective methods for testing the quality of the controllable gas spring.
1. Weight comparison of gas springs of the same size.
This method can be used to check the quality of materials used in controllable gas springs. The wall thickness of the pipe fittings used by some manufacturers does not meet the standard requirements of 1-4 mm. The plastic part is used for the related accessories of the inner guide bush. The gas spring is only filled with high-pressure nitrogen gas, not with damping oil.
Hazard: The pipe fittings are too thin, and the outer pipe of the controllable gas spring is easily deformed, resulting in air leakage and explosion. When the gas spring works quickly, the cylinder can overheat and damage internal components.
2. Basic visual inspection.
High-quality controllable gas springs follow management standards from the production process to the final packaging. The piston rod is plated evenly and the cylinder barrel is smooth. Seam size standard.
Hazard: If the electroplating layer and paint layer on the surface of the product are not handled well, there will be peeling and paint peeling in the follow-up. Not only affects the aesthetics of the product. At the same time, because the surface of the piston rod is not smooth, the internal seal is damaged. Affect the service life of the controllable gas spring.
3. The length of the bead at the position of the gas spring steel cylinder.
The pressure rib of the spring wraps the guide sleeve of the piston rod, and the guide sleeve provides guidance and protection for the piston rod to enter the cylinder. The shorter the bead, the shorter the guide sleeve.
Hazard: If the guide sleeve is too short, the looseness of the piston rod of the controllable gas spring will be greater. After a period of use, it will leak air and oil. affect product life.
Keyword:
Scan the QR code to read on your phone
Previous:
None
Previous:
None
News
Scan and follow us
Copyright © 2022 Jiangsu Mingrui Gas Spring Technology Co., Ltd. Powered by:www.300.cn 苏ICP备2021013846号-1