Closing assembly for closing a blade ring, associated blade supports, turbomachine, and method for inserting a closing assembly

A closing assembly for closing a blade ring which is inserted into an encircling T-groove of a blade support of a turbomachine, comprising:

• two insert elements which each have a C-shaped basic shape having a resting leg, a retention leg, and a connection leg that connects the resting leg to the retention leg and which each are configured for encompassing one web of the T-groove,
• wherein the resting leg engages above the web and the retention leg engages below the web, and having an intermediate element that is positionable between the insert elements and is configured to prevent the latter from moving toward the center of the T-groove,
• wherein the intermediate element in the fitted state is configured to engage below the retention legs of the insert elements, and the intermediate element is assigned positioning means which are configured to be supported between the groove base of the T-groove and the intermediate element and to position the intermediate element at a desired spacing from the groove base.