Permanent magnet type ultralow-frequency vertical tuned mass damper

Abstract

The invention discloses a permanent magnet type ultralow-frequency vertical tuned mass damper. The permanent magnet type ultralow-frequency vertical tuned mass damper comprises an inertia mass system, an electromagnetic damping system and a support system, wherein the inertia mass system comprises a counterweight block, a flywheel, an inclined flexible hinge and a vertical flexible hinge; the electromagnetic damping system comprises a conductor plate and a permanent magnet; and the support system comprises a bearing bracket, a flexible hinge fixed plate, an extension spring, a bearing frame, an upper spring cross beam, a lower spring cross beam, a bearing and a base. A straight circular flexible hinge is adopted as a linear-rotary motion conversion mechanism; the space structure of the flexible hinge is well designed; and when the main structure is slowly and slightly vibrated, a small linear motion of the counterweight block can be effectively converted to a rotating motion of the flywheel, so that the problem of excessive static elongation of the spring of the ultralow-frequency vertical tuned mass damper is solved, and the vibration isolating performance of the tuned mass damper in the field of ultralow-frequency weak vibration is improved.

Description

technical field [0001] The invention relates to a tuned mass damper (Tuned Mass Damper, TMD), in particular to a permanent magnet ultra-low frequency vertical TMD, which belongs to the technical field of measuring instruments. Background technique [0002] A tuned mass damper is a discrete damping device, also known as an active mass damper or a harmonic damper, which is installed on a vibrating structure to suppress the vibration of the structure and prevent damage and failure of the structure. It stabilizes violent movements caused by harmonic vibrations, dampens vibrations with lighter components, and dampens vibrations even in the harshest conditions. After long-term development, TMD has changed from traditional viscous liquid TMD to electromagnetic eddy current energy consumption TMD, which replaces traditional oil damper with electromagnetic damper, overcomes environmental pollution caused by oil leakage and parts caused by friction loss etc. However, almost all TMDs...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that the static elongation of the spring is too long in the field of ultra-low frequency vibration isolation in the traditional vertical TMD, the present invention provides a permanent magnet ultra-low frequency vertical TMD, which uses flexible hinges, and through a special structural design It can convert tiny linear motion into rotary motion, so as to play the role of TMD in the low-frequency weak field of vibration reduction. The specific technical scheme is as follows:

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