The shock absorption performance of the shock absorber should be judged by the shock absorption test. Damping test is usually carried out only when the shock absorber is newly designed and manufactured, and it is not necessary to test the shock absorber one by one after mass production; It only needs to carry out the type test. However, the shock absorbers that are particularly important or must be conditioned in the shock absorption experiment to meet the skill requirements should be tested one by one.
The vibration reduction experiment should be carried out on the whole machine, so the experimental condition is the practical working condition; The vibration reduction experiment can also be carried out on a special vibration reduction test bench, that is, to simulate the practical working conditions, artificially make the vibration source, compare the difference between the shock absorber without it and the shock absorber installed in the future, so as to evaluate the quality of the shock absorber. According to different situations, various excitation methods can be used to artificially produce vibration sources, such as using eccentric wheel to rotate and drive the slider to generate reciprocating displacement excitation, using centrifugal force generated by unbalanced rotor to excite, using compressed air blower to excite, using loudspeaker to excite, and using electromagnetic induction to excite.
As an important valve element, pneumatic butterfly valve has been widely used in various machinery, automobiles, railway locomotives, water transport vehicles, aircraft and other aircraft. It can be said that pneumatic butterfly valves are required for the center where valves and isolation are required.
To improve the service life of drill bits and other drilling tools. It is reported that the pneumatic butterfly valve is mainly used to absorb the impact and vibration load generated in drilling.