A coupling device for coupling tower segments, which are arranged on one another, of a tubular tower of a wind power installation, having a coupling plate for contact against a circumferential surface of the tower segments, which are arranged on one another, in an abutting region, comprising a fastening portion having a first contact surface for arranging on a circumferential surface of a first tower segment and a connecting portion having a second contact surface for arranging on a circumferential surface of a second tower segment, and at least one through-opening. The coupling device furthermore comprises a receiving plate which is arranged on an outer surface of the connecting portion of the coupling plate and has at least one receiving element for receiving a counter element which can be bolted to the threaded element and is formed coaxially with respect to the through-opening of the coupling plate and as an anti-twist protection for blocking the counter element from rotating and preventing bolting to the threaded element.