Shock absorber is a mechanical device to slow down and stop the movement of objects. It usually absorbs some resistance to help control the speed of movement.
The main function of Shock absorber is to mitigate the impact of machinery in mechanical vibration.
There are various impact problems in the project. Aircraft landing, shell firing, rapid reciprocating motion of machine tool parts, lifting or falling of packaging materials will impact the machinery and foundation. Under the action of impact force, the parts of machinery will produce great dynamic stress and may cause damage, and the surrounding machinery and buildings may also be endangered. Therefore, in mechanical engineering Shock absorber or isolation measures shall be taken for all unnecessary impact forces. For example, Shock absorber materials must be placed at the bottom of anvil of forging machinery; reliable Shock absorber measures shall be taken to ensure that precision machinery or instruments are not damaged during hoisting and transportation.
Shock absorber is different from vibration isolation and vibration reduction. It uses Shock absorber to absorb impact energy and then convert it into heat energy, or The device is released gently to prolong the time of speed change, so as to minimize the impact force on mechanical equipment.
Similarly, in daily life, there are a large number of Shock absorber applications, such as the pedal type garbage can. After the Shock absorber is used, the lid will open slowly after the foot is stepped on, and the lid will close slowly after the foot is loosened instead of falling suddenly, which can effectively reduce the noise and keep it closed even after the barrel body is dumped. It has the function of shockproof and slow down the opening and closing speed to make it smooth and reduce the noise effectively The noise generated during the use of the product can improve the grade of the whole product.
There are many kinds of materials used for Shock absorber, including spring, rubber, oil pressure, air pressure, etc. according to different ways of absorbing energy, it can be divided into:
Mechanical Shock absorber, which can convert impact kinetic energy into deformation energy of elastic element, or dissipate energy with internal resistance of Shock absorber material;
Hydraulic Shock absorber absorbs energy by hydraulic throttling;
Gas Shock absorber absorbs energy by gas compression.
Compared with mechanical Shock absorber and gas Shock absorber, hydraulic Shock absorber is widely used in industry.