Patent ID: 7926789

Claim:
A lifting gear comprising: a drive unit; a drive shaft that is drivably coupled to said drive unit and has a drive flange fixed thereon; a cable drum adapted to be connected to said drive flange; a coupling adapted to connect said cable drum to said drive flange, wherein said coupling comprises at least one coupling element which engages a respective recess in said drive flange and is disposed into a bore in said cable drum in order to transmit torque; and wherein said at least one coupling element is displaceable and fixable radially from an assembly position to an operating position, in which said coupling element drivingly connects said drive flange and said cable drum together, said coupling element formed as a sleeve having a central and radially aligned channel and including a screw adapted to be screwed into said channel to move said coupling element from the assembly position radially outwards to the operating position, said coupling element comprising an outer driving cam and an inner driving cam that adjoins said outer driving cam, said outer driving cam having an outer diameter that is smaller than an outer diameter of said inner driving cam, and said coupling element comprising a shoulder in the region of the transition between said inner driving cam and said outer driving cam, and wherein in the operating position said shoulder lies against an inner surface of said cable drum.