VIBRATION CONTROL SUPPORT AND VIBRATION CONTROL DEVICE

• Main Authors: KATAYAMA HIROSHI, ITO RYO, HOZUMI HISASHI
• Format: Patent
• Language: English; Japanese
• Published: 17.11.2014
• Subjects: BLASTING; BUILDING; BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; ENGINEERING ELEMENTS AND UNITS; FENCING; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MASTS; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; SHOCK-ABSORBERS; SPRINGS; SWIMMING OR SPLASH BATHS OR POOLS; TENTS OR CANOPIES, IN GENERAL; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a vibration control support capable of supporting a structure such as an apparatus or piping against slow vibration such as thermal expansion of the structure caused by temperature change by a flexible structure, and capable of supporting the structure against vibration such as mechanical vibration or an earthquake by a rigid structure.SOLUTION: Two pressure chambers 11a and 11b partitioned by a piston 12 are communicated with each other by a bypass pipe 13 arranged outside the cylinder 11 as a first flow passage and an orifice 15 formed in the piston 12 as a second flow passage. With respect to long-period vibration, pressure loss in the orifice 15 shares the role, and with respect to short-period vibration, additive damping in the bypass pipe 13 having a long pipe passage length shares the role. 【課題】機器、配管などの構造物に対して、温度変化による構造物の熱膨張などのような比較的ゆっくりした振動に対して構造物を柔構造で支持することができ、機械振動や地震などの振動に対しては構造物を剛構造で支持する制振サポートを提供する。【解決手段】ピストン１２で画成された二つの圧力室１１ａと圧力室１１ｂとの間は、第１流路として構成したシリンダー１１の外側に配したバイパス管１３と、第２流路として構成したピストン１２内に形成したオリフィス１５と、によって連通されている。長周期の振動に対してはオリフィス１５における圧力損失に役割を分担させ、短周期の振動に対しては管路長を長く構成したバイパス管１３における付加減衰に役割を分担させている。【選択図】図２