| 摘要 |
PURPOSE: To excellently damp vibration even when high frequency vibration is transmitted together with low frequency vibration at the same time by setting a length of a pipe line to be at least a specific times of the maximum wavelength in pressure fluctuation generated in the pipe line when high frequency vibration is transmitted. CONSTITUTION: A length A of a pipe line 5 is the length of a part expansible in the radial direction, and the pipe line 5 is provided with a length of at least 0.2 times of the maximum wavelength in pressure fluctuation generated in the pipe line 5 when high frequency vibration is transmitted through the pipe line 5. When high frequency vibration is transmitted, damping effect based on reciprocation of the fluid in a damping hole 3 is gradually reduced by inertia mass of the fluid inside a working chamber 1, and a quantity of the reciprocating fluid inside the damping hole 3 is also reduced. Because of flexibility of the pipe line 5 peripheral part, damping effect is transformed into a wave motion phenomenon inside the pipe line 5 gradually. This wave motion phenomenon is generated by a pressure change generated in the working chamber 1 and transmitted as a pressure wave to a damping chamber 4 via the pipe line 5, and the pressure wave is absorbed without any reflection by means of the damping body 6. In this way, transmission of high frequency vibration from a base 17 to a support 16 can be eliminated. |
