SUPPORT MECHANISM FOR SHAFT, ROTATING MACHINE AND METHOD OF REMOVING BEARING

To provide a support mechanism for supporting a shaft when removing a bearing which rotatably supports the shaft of a rotor in a rotating machine, and a rotating machine.SOLUTION: A support mechanism for supporting a shaft 50 when removing bearings 8, 9 from a rotating machine 1 comprises: a ring-shaped first support material 3 and a ring-shaped second support material 4 which are arranged with a clearance around the shaft 50 at a first position on the inside of a first side lid 21 and the inside of a second side lid 22; first moving means 10 for moving the first support material 3 along an axial direction of the shaft 50 and bringing the first support material 3 to a rest at the moved position; and second moving means 11 for moving the second support material 4 along the axial direction, and bringing the second support material 4 to a rest at the moved position. The first support material 3 and the second support material 4 include support parts 31, 41 which makes contact with an external peripheral surface of a portion 500 of the shaft 50 on their internal peripheral surfaces to support the shaft 50 at a second position further away from the side lids 21, 22 than the first position.SELECTED DRAWING: Figure 1 【課題】回転機械においてロータのシャフトを回転可能に支持する軸受を取り外す際にシャフトを支持する支持機構及び回転機械を提供することを目的とする。【解決手段】回転機械１から軸受８，９を取り外す際にシャフト５０を支持する支持機構は、第一側蓋２１の内側及び第二側蓋２２の内側の第一の位置においてシャフト５０の周囲に隙間をあけて配置されるリング状の第一支持材３及び第二支持材４と、第一支持材３をシャフト５０の軸方向に沿って移動させかつ第一支持材３を移動した位置で静止させる第一移動手段１０と、第二支持材４を前記軸方向に沿って移動させかつ第二支持材４を移動した位置で静止させる第二移動手段１１とを備え、第一支持材３及び第二支持材４は、第一の位置よりも側蓋２１，２２から離れた第二の位置において内周面がシャフト５の一部分５００の外周面と接触してシャフト５０を支持する支持部３１，４１を含む。【選択図】図１