Novel sleeve-type pneumatic spring with external restraint aluminum cover

Abstract

The invention belongs to the technical field of pneumatic springs and particularly provides a novel sleeve-type pneumatic spring with an external restraint aluminum cover. The novel sleeve-type pneumatic spring comprises a rubber pneumatic bag, wherein a pressure ring protective cover is arranged at the top end of the outer surface of the rubber pneumatic bag; a pressure ring A is connected between the pressure ring protective cover and the rubber pneumatic bag; an inner support ring is arranged in the rubber pneumatic bag; the external restraint aluminum cover is arranged on the outer surfaceof the rubber pneumatic bag; the external restraint aluminum cover, the rubber pneumatic bag and the inner support ring are buckled and connected through pressure; a piston is connected to the bottomof the rubber pneumatic bag; and the piston and the rubber pneumatic bag are buckled, fastened and sealed through a pressure ring B. According to the novel sleeve-type pneumatic spring, the plastic pressure ring protective cover that is flanged is adopted in an upper cover hold-down device, so that not only is the rubber pneumatic bag prevented from upward flanging, but also the pressure rings are resistant to rust and dust; the novel sleeve-type pneumatic spring is environmentally friendly, light in weight and improved in product security; and the rubber pneumatic bag is prevented from expansion interference with a peripheral part after being protected by the external restaint aluminum cover, so that the fatigue life is long and the safety is high.

Description

technical field [0001] The invention belongs to the technical field of air springs, and in particular relates to a novel sleeve-type air spring with an external restraint aluminum cover. Background technique [0002] Air spring is an ideal elastic element with ideal nonlinear mechanical properties. It is widely used in many fields such as commercial vehicle cab, train secondary suspension, vehicle suspension, equipment shock absorption, etc. The superior mechanical properties of air spring Features can provide good ride comfort for the vehicle. [0003] Air springs can be generally divided into capsule air springs, membrane air springs and sleeve air springs. Sleeve air springs are often used in places with limited space and relatively small load requirements. However, in the prior art, the sleeve air spring structure The rubber airbag is designed without restraint. When the rubber airbag is compressed and stretched, the outer diameter of the rubber airbag changes greatly, ...

AI Technical Summary

Problems solved by technology

[0003] Air springs can be generally divided into capsule air springs, membrane air springs and sleeve air springs. Sleeve air springs are often used in places with limited space and relatively small load requirements. However, in the prior art, the sleeve air spring structure The rubber airbag is designed without restraint. When the rubber airbag is compressed and stretched, the outer diameter of the rubber airbag changes greatly, especially in the case of large vibration and shock and after repeated fatigue of the rubber airbag. Interference friction between the surface and surrounding components leads to premature damage; the increase in the outer diameter also changes the crossing angle of the inner cords of the airbag, which leads to changes in mechanical properties and reduces the fatigue life of the air spring

[0004] In the prior art, the upper cover of the sleeve-type air spring is often made of iron, which is heavy, and the upper surface of the iron upper cover is prone to rust during the use of the air spring, which neither meets the requirements for lightweight, nor is it conducive to environmental protection

[0005] In the prior art, the upper cover pressing device of the sleeve air spring does not have a pressure ring protection cover. After the plated pressure ring is buckled, it is prone to rust during use, which is not conducive to environmental protection, and it is easy to cause the strength of the pressure ring to decrease. premature air spring failure

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