Fixation device for blading of a turbo-machine

A device for fixing blades in a compressor unit or turbine stage in a gas turbine system,

• wherein a plurality of blades are inserted within a mounting groove, and a mounting gap is defined between at least two blades positioned adjacent to each other inside the mounting groove, the device comprising:
• a wedge element;
• two insertion elements constructed as collar halves that can be inserted into the mounting gap, each of the insertion elements having a shape for a shape-mated engagement with two adjacent blades and the insertion elements enclosing between themselves a gap space when the insertion elements are inserted into the mounting gap such that the wedge element can be inserted into the gap space;
• the wedge element being wedged in the gap space such that both collar halves are fixed in the mounting gap by the wedge element, the wedge element being provided with at least one connecting element on the wedge element facing towards the side of a blade and the corresponding blade being provided with at least one mating recess corresponding to the at least one connecting element, so that the wedge element and the blade are closely connected with each other by a shape-mated connection,
• wherein the turbo-machine is a compressor unit or a turbine stage in a gas turbine system.