A Rubber Air Spring Damper with Preset Early Stiffness

Abstract

The invention discloses a rubber air spring damper with presettable early-stage rigidity. The rubber air spring damper with presettable early-stage rigidity is characterized in that a back pressure device is further arranged in a guide sleeve, the back pressure device comprises two groups of prepressing steel cables and two floating press plates, at least three steel stables are included in each group of prepressing steel cables, the two groups of prepressing steel cables are symmetrically distributed around the axis of the guide sleeve in the linear state respectively in the annular space between a rubber air spring and the guide sleeve, one ends of one group of prepressing steel cables are fixed to the floating press plate adjacent to a second end cover respectively, the other ends of the group of prepressing steel cables penetrate through the floating press plate adjacent to a driving component and are fixed to the driving component respectively, one ends of the other group of prepressing steel cables are fixed to the floating press plate adjacent to the driving component, and the other ends of the other group of prepressing steel cables penetrate through the floating press plate adjacent to the second end cover and fixed to the second end cover respectively; and the two groups of prepressing steel cables are tensioned, so that the rubber air spring is clamped between the two floating press plates all along.

Description

technical field [0001] The invention relates to a shock absorbing device, in particular to a damper using a rubber air spring. Background technique [0002] The rubber air spring is a curved capsule formed by laminating rubber and network cables. The two ends of the capsule are sealed with two steel plates to form a compressed air chamber, which uses the compressibility of the air to achieve elastic action; due to the non-linear nature of the rubber air spring characteristics, and low natural frequency, it is widely used as a vibration isolation component in some high-frequency vibration occasions, such as automobiles, high-frequency machinery and building structures. [0003] For the design of anti-seismic structures, especially the anti-seismic structures of high-rise buildings, people pursue a comprehensive anti-seismic performance that combines "resistance" and "consumption", that is, under the action of weak wind vibration and small earthquakes, the anti-seismic structu...

AI Technical Summary

Problems solved by technology

However, this utility model patent obviously has the following disadvantages: 1. Two coil springs are required, and the length of the entire damper is relatively long, which is not suitable for installation in a space with a small distance; 2. It is difficult or even impossible to ensure the two springs in the process Only the stiffness of the spring (including tensile stiffness and compression stiffness) is equal, so the shock absorption effect is different in different wind directions; 3. The early stiffness of the damper cannot be changed to achieve the preset wind resistance level and reduce the cost of shock absorption; 4. A helical spring works in two states of tension and compression at the same time. The metal material and production process of the existing spring are difficult to meet the requirements. The two working states of tension and compression can only be realized by reducing the elastic deformation range of the helical spring. , which obviously wastes resources

Since the rubber air spring is a closed air chamber whose main body is made of rubber, the above three means of changing the effective working length of the spring are obviously not suitable for the rubber air spring; , and can only compress energy-dissipating vibrations, but not stretch energy-dissipating vibrations

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