PROBLEM TO BE SOLVED: To provide a lifting device for a vehicle, whose base frame can be firmly mounted on a floor part.SOLUTION: The base frame 7 supporting a lifting operation means is mounted on the floor part F comprising a plate-like floor formation member 21 and an elongated reinforcement member 22 provided with flange portions 22c welded to the bottom of the floor formation member 21 by being fastened and fixed to the floor part F with bolts 24 which jointly fasten the base frame 7, the floor formation member 21, and the flange portions 22c of the reinforcement member 22.COPYRIGHT: (C)2009,JPO&INPIT【課題】基枠を強固に床部に取り付けることができる車両用昇降装置を提供する。【解決手段】床部Fに取り付け、床部Fを、板状の床形成部材21とその床形成部材21の下面に溶接されるフランジ部22cを備えた長尺状の補強部材22とを備えて構成し、昇降操作手段を支持する基枠7を、その基枠7、床形成部材21、及び、補強部材22のフランジ部22cを共締めするボルト24にて床部Fに締め付け固定される状態で、床部Fに取り付ける。【選択図】図7