FREQUENCY TUNABLE DYNAMIC ABSORBER BY ADJUSTING ITS HEIGHT

摘要

PURPOSE: A dynamic damper, capable of target frequency control through height control, is provided to enable an operator to tune frequency by controlling the height of a mass body of a dynamic damper according to a natural frequency change. CONSTITUTION: A dynamic damper comprises an oil-hydraulic circuit(20), a piston(30), a fixing part(40), and a mass body(10). An oil-hydraulic circuit is installed on a vibrator at a regular interval. The piston is installed to control the height control using the oil-hydraulic circuit. The fixing part is installed in the piston and fixes the piston at a fixed height.