Spring shock absorber is the center to maintain the life of other parts of the vehicle
Spring shock absorber is the center to maintain the life of other parts of the car. Why do you say so? In fact, because of the spring shock absorber, the car is much more stable in the driving process than the car without the spring shock absorber. In this way, the loss of each part of the car in a smooth driving car will be relatively low. Not only that, but also the role of buffering each component in shaking, so it can be said that the spring shock absorber is the center to maintain the life of other parts of the car.
Since spring shock absorber is so important to a car, its quality can directly affect the service life of the whole car. So it is also quite critical that we often check the quality of the spring shock absorber. How to check the quality of the spring shock absorber in the car?
1. Stop the car after driving for 10 km on the road with poor road conditions, touch the shell of the spring damper with your hand. If it is not hot enough, it is clarified that there is no resistance inside the spring damper, and the spring damper does not work. At this time, take part in the appropriate lubricating oil, and then stop the test. If the shell is hot, it means that the spring damper is short of oil, and it should be filled with enough oil; Otherwise, it indicates that the spring damper is invalid;
2. Press the bumper firmly and then release it. If the car jumps 2-3 times, it indicates that the spring shock absorber works well;
3. When the car drives slowly and brakes urgently, if the car vibrates violently, it is clarified that there is a problem with the spring damper;
4. Dismantle the spring shock absorber and erect it, clamp the lower connecting ring on the bench clamp, and pull and press the shock absorber rod several times. At this time, there should be stable resistance. Pull upward, and the resistance recovered should be greater than the resistance when pressing downward. If the resistance is unstable or no resistance, it may be the lack of oil in the spring shock absorber or the damage of valve parts. Stop repairing or changing parts. After confirming that there is a problem or failure of the spring damper, check whether the spring damper can leak oil or has traces of obsolete oil leakage. If oil leakage is found, first tighten the nut of the oil cylinder head. If the spring damper still leaks oil, it may be the oil seal. The sealing washer is damaged and invalid, so it should be replaced with a new seal. If the oil leakage still cannot be eliminated, pull out the shock absorber rod. If you feel that there is a seizure or the weight is different, further check whether the clearance between the piston and the cylinder barrel is too large, whether the piston connecting rod of the spring damper is bent, and whether there is scratch or pull mark on the surface of the piston connecting rod and the cylinder barrel.
If there is no oil leakage from the spring shock absorber, check whether there is any damage, desoldering, cracking or scattering in the connecting pin, connecting rod, connecting hole, rubber bushing, etc. of the spring shock absorber. If the above inspection is normal, the spring damper shall be further synthesized to check whether the fit clearance between the piston and the cylinder barrel is too large, whether the cylinder barrel is strained, whether the valve seal is good, whether the valve clack and the valve seat are closely fitted, and whether the extension spring of the spring damper is too soft or broken. According to the condition, the method of grinding or replacing parts shall be adopted for repair.
In addition, the spring shock absorber will make a noise in practice, which is mainly caused by the collision between the spring shock absorber and the leaf spring, the frame or the shaft, the damaged or scattered rubber pad, the deformation of the dust cylinder of the shock absorber, and the lack of oil.

The stainless steel mesh sleeve is the main pressure bearing part of the metal braided hose device in the pressure pipeline, and also plays a maintenance role for the pneumatic butterfly valve. According to the pressure in the pipeline and the application site, one or more layers of stainless steel wires or steel strips can be selected to be woven according to certain parameters to form a high-pressure pneumatic butterfly valve. The pressure range of metal braided hose is generally between PN0.6 and 32.0MPa, up to 42.0MPa. Stainless steel mesh cover mainly includes steel mesh cover and steel mesh cover.
4、 The material of stainless steel pneumatic butterfly valve and the data on the selection of main parts are made of austenitic stainless steel, so as to ensure the excellent temperature resistance and corrosion resistance of the pneumatic butterfly valve. The operating temperature range of the pneumatic butterfly valve is very large, - 196~600 ℃. In the process of practical application, the selection of pneumatic butterfly valve materials should be based on the corrosivity of the pipeline medium to select the corresponding stainless steel brand, It can ensure the corrosion resistance of pneumatic butterfly valve.
5、 Three functions of stainless steel pneumatic butterfly valve
1. Reduce the device stress of the pipeline.
2. The rated position of compensation pipe moves.
3. Absorb the vibration of pipeline system.