Shock absorbers are used in conjunction with an elastic element

Machine shock absorbers are used in conjunction with the elastic element among the general use of a vehicle suspension system, such as cars, trains, motorcycles, also used in some large vibration on large machinery or buildings, such as the tunnel shield machine when when a relatively large external shock loads passed, by an elastic element (typically a spring) to the "big energy, a shock," translates to "little energy, repeated impact", which eased the impact of purpose if there is no Oil shock absorbers.