Anti-rotation positioning device for lifting column

The utility model provides an anti-rotation positioning device for a lifting column, and relates to the technical field of lifting columns, the anti-rotation positioning device comprises a supporting column, the lifting column is inserted into the upper part of the supporting column, two sliding chutes are cut in the outer side of the lifting column in a mirror image manner, two sliding strips are vertically reserved in the two sliding chutes, two sliding rails are mounted on the inner wall of the supporting column in a mirror image manner, and the two sliding rails are arranged on the upper part of the supporting column. The two sliding rails are fixed through fastening bolts, and two limiting grooves are formed in each sliding rail. According to the lifting device, the lifting column is inserted into the supporting column, the sliding rail slides up and down in the sliding groove, and the sliding strip in the sliding groove is limited through the limiting groove in the sliding rail, so that the lifting colu