PROBLEM TO BE SOLVED: To provide a dynamic vibration absorber for an elevator, which can suppress the vibration of a rope homogeneously in an arbitrary horizontal direction against transverse vibration of the rope.SOLUTION: A dynamic vibration absorber for an elevator comprises: a main rope holding member 1 (or a balance rope holding member 5) for holding a plurality of main ropes R1 (or balance ropes R2) at a position upper (lower) position of at least one of two end portions of a plurality of main rope R1 (or balance ropes R2); a vibration absorption member 2 enveloping the main rope holding member 1 (or the balance rope holding member 5) and supported to be freely displaced in a horizontal direction with respect to the main rope holding member 1 (or the balance rope holding member 5); and at least three elastic bodies connected to the main rope holding member 1 (or the balance rope holding member 5) and the vibration absorption member 2, for applying, when the vibration absorption member 2 is displaced in an arbitrary direction, a restoration in an opposite direction of the one direction.
【課題】ロープの横振れに対し、任意の水平方向においてロープの振動を一様に抑制できるエレベータ用動吸振器を提供する。【解決手段】複数の主ロープR1(釣合ロープR2)の両端部のうち少なくとも一方の端部より上方(下方)位置において、これらを一体的に束ねて保持する主ロープ保持部材1(釣合ロープ保持部材5)と、主ロープ保持部材1(釣合ロープ保持部材5)を包囲し、主ロープ保持部材1(釣合ロープ保持部材5)に対して水平方向へ相対的に変位自在に支持された吸振質量体2と、主ロープ保持部材1(釣合ロープ保持部材5)と吸振質量体2とに連結され、吸振質量体2が水平方向における任意の一方向へ変位したとき、当該一方向とは逆方向へ復元力を作用させる、少なくとも3以上の弾性体と、を備えた振動吸収機構から構成した。【選択図】図2
DYNAMIC VIBRATION ABSORBER FOR ELEVATOR
エレベータ用動吸振器
2015-11-12
Patent
Electronic Resource
Japanese