LOW FREQUENCY NOISE REDUCTION DEVICE

LOW FREQUENCY NOISE REDUCTION DEVICE

PROBLEM TO BE SOLVED: To suppress low frequency noise due to a vibration of 10 to 20 Hz of a bridge.SOLUTION: A low frequency noise reduction device 100 is fixed to a bridge 110 and reduces low frequency noise generated from the bridge. The low frequency noise reduction device 100 comprises: a sprin...

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Hauptverfasser: MIYATA AKIRA, UNO NAUEMON, KASABO HIDEAKI
Format: Patent
Sprache:eng
Schlagworte:
ASSEMBLY OF BRIDGES
CONSTRUCTION OF BRIDGES
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
FIXED CONSTRUCTIONS
OR VIADUCTS
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creator MIYATA AKIRA
UNO NAUEMON
KASABO HIDEAKI
description PROBLEM TO BE SOLVED: To suppress low frequency noise due to a vibration of 10 to 20 Hz of a bridge.SOLUTION: A low frequency noise reduction device 100 is fixed to a bridge 110 and reduces low frequency noise generated from the bridge. The low frequency noise reduction device 100 comprises: a spring part 120 constituted of a plurality of disc springs 122 provided in conjunction, directly receiving the vibration of the bridge, and vibrating in association with the vibration of the bridge; and a weight 130 connected to the spring part in a vibration direction thereof. The resonance frequency of a vibration system constituted of the spring part and the weight is adjusted to a frequency included in a range between 10 Hz and 20 Hz.
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subjects ASSEMBLY OF BRIDGES
CONSTRUCTION OF BRIDGES
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
FIXED CONSTRUCTIONS
OR VIADUCTS
title LOW FREQUENCY NOISE REDUCTION DEVICE
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