Membrane type air spring for cab with additional gas chamber

Abstract

The invention belongs to the technical field of membrane air springs, in particular to a membrane type air spring for a cab with an additional gas chamber. The membrane type air spring comprises an upper cover, a rubber air bag and a lower piston which are sequentially connected from top to bottom. Upper pressing devices for tightly sealing the upper cover are arranged on the periphery of the upper cover, and lower pressing devices for tightly sealing the lower piston are arranged on the periphery of the lower piston. An inner hollowed-out structure is arranged inside the aluminum upper cover,and an emptying structure serving as an additional gas chamber is also arranged in the inner cavity of the lower piston. The membrane type air spring is simple in structure and obvious in light weight effect, and can effectively lower the rigidity of the air spring, reduce the non-spring carrying quality and improve the riding comfort of vehicles.

Description

technical field [0001] The invention belongs to the technical field of air springs, in particular to a membrane-type air spring for a driver's cab with an additional air chamber. Background technique [0002] Air spring is an important component of air suspension. It is widely used in many fields such as commercial vehicle cab, train, automobile, and precision equipment shock absorption. As an ideal elastic element, air spring has nonlinear characteristics and can provide good support for vehicles. ride comfort. [0003] Air springs can be generally divided into bladder air springs, membrane air springs and composite air springs. Due to its compact structure, diaphragm air springs are often used in occasions where the space is relatively compact, such as cab suspension. [0004] However, in the prior art, the bearing capacity of the diaphragm air spring used in the cab is relatively small, and the structure of the lower piston is mostly arc-shaped, which is not conducive t...

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Problems solved by technology

[0004] However, in the prior art, the bearing capacity of the diaphragm air spring used in the cab is relatively small, and the structure of the lower piston is mostly arc-shaped, which is not conducive to the control of the production process; and the volume occupied by the upper cover and the lower piston body is not fully utilized. , when the load is large, the air pressure inside the airbag is too high and the stiffness is too large, which is not conducive to improving the life of the air spring and improving the ride comfort

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