A multifunctional shock absorber with energy recovery

Abstract

The present invention discloses a multifunctional shock absorber with energy recovery, which includes upper and lower cylinders; the upper cylinder is divided into an inter-connected intermediate cavity and a functional cavity, and the intermediate cavity is filled with air springs; A mass piston is arranged inside the functional cavity, and the mass piston is connected to the inner wall of the upper cylinder through a spring; the lower cylinder includes an inner cylinder and an outer cylinder, and two permanent magnets are installed inside the outer cylinder. The inner cylinder is divided into inter-connected intermediate cavity and functional cavity. The intermediate cavity is located in the center of the inner cylinder and filled with air springs; the functional cavity is located around the intermediate cavity; metal blades are arranged between adjacent functional cavities; The functional chamber is divided into four small chambers, which are respectively equipped with energy harvesting devices, runners and filled with magnetorheological fluid, air springs and lead screw nut pairs, and the screw nut pair of screw rods run through the four chambers It is connected with both ends of the functional cavity; the two intermediate cavities are connected by bearings.

Description

technical field [0001] The invention relates to the field of vibration control of civil engineering, in particular to a multifunctional shock absorber with energy recovery, which is mainly used for reducing the vibration response of a towering or large-span space structure under the action of environmental excitation. Background technique [0002] Due to the widespread use of lightweight and high-strength materials, new high-rise building structures usually have the characteristics of light weight, high strength, high aspect ratio and low natural vibration frequency; earthquakes, etc.) are becoming more and more sensitive. Under the excitation of monsoon and typhoon, the wind-induced vibration damage of tall buildings, the discomfort of residents in the buildings and the damage of living facilities are becoming more and more serious. The research on wind resistance and wind vibration control of tall buildings has become an urgent and important task that engineering scholars...

AI Technical Summary

Problems solved by technology

[0003] One of the current existing technologies is to consume the vibration energy of the building structure under the action of environmental excitation by installing dampers or vibration reduction devices on the building structure, but the current vibration control technology is mostly passive, such as the use of more TMD mass-tuned damper and TLD liquid-tuned damper, under the vibration of different intensities, will easily cause the vibration frequency of the damper to be out of tune with the vibration frequency of the main structure, so they have poor adaptability to the environment and do not have certain self-regulation capacity; and to achieve the ideal vibration reduction effect for structures with large dynamic response, a large space is required. In order to achieve the ideal vibration reduction effect, it is necessary to attach a large mass block to the top of the built building, thereby increasing the vertical load of the structure; In addition, high-rise buildings with large masses can have a whiplash effect under wind vibration or earthquake action

Images