Adjustable damping energy storage type tuned mass damper and energy storage method thereof

Abstract

The invention provides an adjustable damping energy storage type tuned mass damper. A damping adjusting device of a damper of consists of a permanent magnet, coils, auxiliary rods, an energy storage battery, an adjustable resistor, a light-emitting diode (LED) pre-warning indicator light; in the reciprocating motion process that the damper absorbs the vibration energy of a main structure so as to generate inertial mass, a cylindrical spiral spring provides damping, the permanent magnet generates a variable magnetic field, induced electromotive force is generated in the coils so as to generate induction current, and the induction current generates electromagnetic damping to inhibit the movement of the permanent magnet; the adjustable resistor in the damping adjusting device is adjusted, so the magnitude of the electromagnetic damping is changed, and the damping ratio of a structure reaches the optimum damping ratio; and residual energy is recovered by using the energy storage battery, the LED pre-warning indicator light provides a pre-warning indication for a pedestrian and a vehicle, and multiple effects of vibration controlling, clean energy recovery, pre-warning and alarming of vibration conditions and the like.

Description

Technical field [0001] The invention relates to a vibration damping device for suppressing structural vibration, and is particularly suitable for vibration control of construction engineering structures. It belongs to the technical field of engineering structure vibration reduction, and specifically relates to a non-contact energy consumption, damping ratio accurately adjustable, The energy can be recycled, and it is a tuned mass damper capable of suppressing vibration and warning of bridges or high-rise buildings. Background technique [0002] With the continuous development of science and technology, the span and height of engineering structures are getting larger and higher. Under the action of external dynamic loads such as earthquakes or strong winds, the structure will produce relatively strong vibrations, increasing structural fatigue and damage, and ultimately As a result, the structure fails before the design life and even a catastrophic accident occurs. Structural vibr...

AI Technical Summary

Problems solved by technology

In order to make the tuned mass damper have better vibration reduction performance and make the damping parameters more stable and adjustable, there are many methods in the prior art to maximize the vibration control effect by adjusting the frequency and damping ratio of the tuned mass damper. , for example, the patent number is 200810237452.6, the authorization number is CN101492941A, and the invention named "a liquid mass double-tuning vibration reduction method" uses fluid-solid coupling vibration to completely separate the mass parameters, stiffness parameters and damping parameters, and the tuning is convenient. However, using The size of the oil hole adjusts the damping force, and the damping ratio of the system is adjusted by using an open damping hole. For dampers with small modal masses, better results can be achieved, while for large modal masses, damping The force increases accordingly, and the adjustment of the damping ratio is difficult; the patent number is 200810082654.8, the authorization number is CN101457553A, and the invention named "tunable mass damper with adjustable spring stiffness" uses a spring stiffness adjustment device to adjust the stiffness of the shock absorber , which simplifies the difficulty of adjustment work, but when adjusting the damping of the shock absorber, the oil damper is used, and there is a problem of oil leakage in the seal; the patent number is 02145115. "Invention, by increasing or reducing the number of springs to adjust the frequency of the tuned mass damper, using mechanical engagement to drive the motor to generate electricity, using the adjustability of the adjustable resistance to adjust the damping ratio of the tuned mass damper to achieve optimal control effect, but the way of mechanical engagement will cause wear and tear of parts and affect the service life, and the number of springs is too large, which will affect the stability of the system and have poor practicability; The invention of the eddy current tuned mass damper” forms an induced current in the metal conductor through the movement of the permanent magnet, that is, an eddy current. The induced current in turn hinders the movement of the permanent magnet, thereby providing an electromagnetic damping for the structure, and by adjusting the permanent magnet and The distance between the metal conductors changes the size of the induced electromotive force, and then changes the induced current to achieve the purpose of adjusting the size of electromagnetic damping. However, the change range of the induced electromotive force is limited, and there are certain restrictions on damping adjustment, and the inertial mass is in the linear bearing. Upward movement, the frictional resistance is relatively large; it is particularly worth mentioning that the tuned mass dampers in the prior art do not recycle the vibration energy

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