Adaptive vibration isolator

Abstract

The present invention provides an adaptive vibration isolator. The adaptive vibration isolator includes a hydraulic system, a first elastic member, a second elastic member, an upper top plate, and a vibration energy consumption device. The hydraulic system comprises a hydraulic cylinder, a piston and a piston rod, a first though hole is formed on the piston, and the first hydraulic chamber is communicated with the second hydraulic chamber via the first through hole. An upper top plate passes through the piston rod and the piston from the transmission portion and is connected to the vibration energy consumption device to drive the vibration energy consumption device to move relative to the piston and adjust the effective aperture of the first through hole.

Description

TECHNICAL FIELD[0001]The present invention relates to the technical field of vibration isolators and in particular to an adaptive vibration isolator.BACKGROUND OF THE PRESENT INVENTION[0002]Among the present vibration and noise reduction measures in the urban rail transit industry, the floating slab track bed vibration isolation system has been widely applied in the vibration and noise control in the rail transit industry due to its ideal vibration isolation effect and its applicability in high-grade or special areas, for example, hospitals, concert halls, museums and the like, which have higher requirements on vibration reduction. In the floating slab track bed vibration isolation system, elastic vibration isolators are arranged below the track slab to isolate the vibration on the track slab from the foundation, so as to reduce the ambient vibration caused by the rail transit vehicles.[0003]The rigidity of the existing elastic vibration isolators is or almost the linear rigidity. I...

AI Technical Summary

Benefits of technology

[0022]In the adaptive vibration isolator of the present invention, the upper top plate drives, when being stressed by an extrusion force, the piston to slide relative to the hydraulic cylinder by the second elastic member and the piston rod, and can also drive the vibration energy consumption device to act to adjust the effective aperture of the first through hole since the second elastic member can generate a restoring force. In a state where the upper top plate is under a high stress, the vibration energy consumption device can reduce the effective aperture of the first through hole, in order to reduce the flow between the first hydra

Problems solved by technology

This results in great difference in pressure of the existing floating slab track bed vibration isolation system under different loads.

The

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