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

The present invention provides an adaptive vibration isolator that can maintain good vibration isolation performance in high load and low load states, and maintain stable vertical movement. The isolator can adjust its performance based on the level of stress placed on the structure, making it ideal for use in track bed vibration isolation systems. The isolator uses a vibration energy consumption device to adjust the size of a through hole that allows hydraulic fluid to flow between two chambers, creating a restoring force that helps to reduce vibration and increase stability. Overall, this invention provides a simple solution that can improve the performance of vibration isolators in various load states and ensure a smooth movement process.

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 system has poor vibration isolation effect under light loads, and the vertical movement of the track will be too large under heavy loads.

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