The invention discloses a medium-weight machined workpiece lifting device conforming to ergonomics. The medium-weight machined workpiece lifting device comprises a smooth track face, a base and a main supporting column, wherein the smooth track face is composed of three sections of track faces, namely, a lower section of the track face, a middle section of the track face and an upper section of track face; the lower section of the track face is in a slope shape, the middle section of the track face is in a
steep slope shape, and the upper section of the track face is parallel to a worktable face; the connecting parts of the three sections of the track face are in a smooth arc shape; the main supporting column is vertically arranged on the base, the front end of the lower section of the track face is connected with the base, the middle of the back side of the upper section of the track face is connected with the upper end of the main supporting column, and the back side of a smooth track face is connected with the base and the main supporting column through a fixing frame; and the fixing frame is of a triangular structure which is spliced by a plurality of strip bodies. According to the medium-weight machined workpiece lifting device conforming to the ergonomics, for lifting medium-weight machined workpieces with the
lifting weight being 20-50kg, the labor intensity of workers can be reduced, the probability of dropping down can be reduced, and quality or industrial accidents caused by dropping down can be reduced.