Pendulum eddy current tuning mass damper device

Abstract

The invention relates to a pendulum eddy current tuning mass damper device which comprises a support, a steel cable, a cable-length adjusting device, a mass block, a permanent magnet adjustment frame, a permanent magnet, a copper plate, a magnetic iron plate, a copper plate and magnetic iron plate adjusting frame, a limiting stopper and a limiting damper. The mass block is formed by connecting of a steel plate through bolts and is hung on the support through the steel cable, the length of the steel cable is adjusted by the cable-length adjusting device, the permanent magnet adjusting frame is installed on the bottom of the mass block, the magnetic iron plate is overlapped on the bottom of the copper plate, and the copper plate and the magnetic iron plate are connected on the copper plate and magnetic iron plate adjusting frame through the bolts. The copper plate and magnetic iron plate adjusting frame is installed on the structural base, the limiting stopper is placed on the periphery of the bottom of the mass block, one end of the limiting damper is connected on the limiting stopper, and the other end of the limiting damper is connected on the structural base which is placed below the limiting damper. The pendulum eddy current tuning mass damper device is long in service life, high in reliability, maintenance-free and high in sensibility and the like, damping adjustment is accurate, convenient and wide in adjustment range, and the friction of the whole TMD structure is nearly zero.

Description

technical field [0001] The invention belongs to the field of vibration reduction and anti-seismic, in particular to a pendulum type electric eddy current tuned mass damper device. Background technique [0002] With the rise of skyscrapers in the world, the height of skyscrapers is getting higher and higher, and the wind vibration and earthquake response control technology of skyscrapers is developing rapidly. Tuned mass damper (Tuned Mass Damper) is widely used in the wind vibration and seismic response control of skyscrapers. [0003] Tuned mass dampers (TMD) are generally divided into vertical and pendulum types. The mass block is suspended by steel cables or supported by springs, and is assisted by a liquid damper. The mass m of the TMD is generally 1% of the structure to be damped. The length of the cable or spring stiffness is determined by the mass m of the TMD and the natural frequency f of the structure to be damped. The liquid damper provides a certain damping rati...

AI Technical Summary

Problems solved by technology

However, due to manufacturing precision, the seal and the piston rod frequently rub against each other for a long time, and the life of the seal is low.

The seals of the liquid damper can no longer be replaced after the TMD is installed, and the mechanical wear of the piston rod is even more difficult to compensate

The damping of the liquid damper cannot be adjusted after installation, and its maintenance is also quite difficult, resulting in a limited life of the overall TMD

During the life of a skyscraper, liquid dampers need to be replaced several times, and the cost of later replacement is very high

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