Posture changing device and posture changing wheelchair thereof

The posture changing device comprises a supporting plate, a rotating frame, a bottom frame and a telescopic rod, the middle of the bottom face of the supporting plate is arranged on the upper portion of the rotating frame, the middle of the rotating frame is movably connected with the upper end of the bottom frame through a connecting piece, and one end of the telescopic rod is movably connected with the bottom of the rotating frame or the side, located on the telescopic rod, of the supporting plate. Through the telescopic movement of the telescopic rod, the rotating frame can rotate with the connecting piece as the axis so as to drive the supporting plate to rotate and change in the vertical position with the connecting piece as the axis. The posture changing device is combined with a wheelchair in the prior art to form the posture changing wheelchair. According to the utility model, the posture changing problem of lifting up the hip position of a disabled or semi-disabled sitting posture person who sits on