Vibration absorption control device for tuned mass damper

Abstract

The invention provides a vibration absorption control device for a tuned mass damper. The vibration absorption control device for the tuned mass damper comprises a shell, a long rod, a reinforcing pipe, a rubber and metal adhesive and a counterweight block, wherein the shell is fixed on a main body structure needing vibration absorption; one end of the long rod is fixed in the shell, and the other end of the long rod is extended to the outer part of the shell; the reinforcing pipe is assembled on the long rod; the rubber and metal adhesive is fixed in the shell and wraps one end of the long rod fixed in the shell; and the counterweight block is arranged on the reinforcing pipe, and the gravity center of the counterweight block is separated from the shell in a predetermined distance. The vibration absorption control device for the tuned mass damper has a simple and reliable structure and low manufacturing cost and is easy and convenient to mount.

Description

technical field [0001] The invention belongs to the field of vibration reduction control, and relates to a vibration reduction control device for a tuned mass damper, which can be used for various towering structures that require vibration reduction. Background technique [0002] Wind turbines are systems that convert the kinetic energy of wind into electrical energy, and are divided into fixed-pitch stall-controlled wind turbines and pitch-controlled wind turbines. For fixed-pitch stall-controlled wind turbines, if the ambient temperature of the wind farm is lower than -20°C and the wind speed exceeds the rated point, the blades will experience irregular and unpredictable moments during the normal operation of the wind turbine. The shimmy phenomenon, ie the edgewise vibration of the blade in the plane of rotation occurs. This vibration sometimes diverges, causing the vibration of the wind turbine to increase rapidly, causing the wind turbine to shut down and affecting the ...

AI Technical Summary

Problems solved by technology

[0007] However, the existing TMD damping control devices have the following disadvantages: 1. The control of the structure is only effective in a narrow frequency range, which is very sensitive to frequency tuning and fluctuations in damping ratio; 2. TMD damping control devices usually include dampers, Its structure is complex, processing is difficult, and the cost is high; 3. If a liquid damper is used, it is also prone to liquid leakage

[0009] However, the existing TLD vibration damping control device has the following disadvantages: 1. Since the mass used is a liquid mass, it is prone to leakage; 2. The liquid is easily affected by the ambient temperature, so that the vibration reduction of the TLD vibration damping control device itself The effect is affected; 3. The control of the structure by the TLD vibration reduction control device is only effective in a narrow frequency domain

Images