VIBRATION CONTROL DEVICE AND INSTALLATION METHOD FOR THE SAME

• Main Authors: FUKUDA YUKI, MATSUSHITA HITOSHI, INOUE RYUTA
• Format: Patent
• Language: English; Japanese
• Published: 10.06.2021
• Subjects: BLASTING; BUILDING; CEILINGS; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; FLOORS; GENERAL BUILDING CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSULATION OR OTHER PROTECTION OF BUILDINGS; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; ROOFS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; WALLS, e.g. PARTITIONS; WEAPONS

To provide a portable vibration control device which can efficiently reduce vibration in a wide range encompassing two natural frequency bands from relatively high frequency to low frequency in accordance with a type of actual work such as chipping work and anchor work.SOLUTION: A portable vibration control device, which is placed on a floor F close to a vibration source and reduce vibration in a specific natural frequency band with a mass body, comprises two mass bodies: a first mass body 1 for reducing vibration in a relatively high natural frequency band; and a second mass body 2 for reducing vibration in relatively low natural frequency band. The first mass body 1 has a leg section 3 which is a first spring transferring the vibration of the floor F to the first mass body 1. The second mass body 2 is arranged above the first mass body 1 through an elastic member 4 which is a second spring transferring the vibration of the floor F from the first mass body 1 to the second mass body 2.SELECTED DRAWING: Figure 1 【課題】実際の斫り作業やアンカー作業などに即して、比較的高周波と低周波の２つの固有振動数帯域にわたる広い範囲の振動を効率よく低減できる可搬式の制振装置の提供。【解決手段】加振源の近傍の床Ｆに設置して特定の固有振動数帯域の振動を質量体により低減する可搬式の制振装置で、質量体が、比較的高周波の固有振動数帯域を低減対象とする第１質量体１と比較的低周波の固有振動数帯域を低減対象とする第２質量体２との２つの質量体で構成され、第１質量体１が、床Ｆの振動を第１質量体１に伝達する第１ばねとなる脚部３を備え、第２質量体２が、床Ｆの振動を第１質量体１から第２質量体２に伝達する第２ばねとなる弾性部材４を介して第１質量体１の上方に配置される。【選択図】図１