Holding gear for temporarily fixing a plate-shaped object, in particular a tablet computer, having a first holder which includes a coupling arrangement for connection to a supporting gear and a first receiving section for a positive reception at least in two spatial directions of a first narrow side of the plate-shaped object, and having a second holder, which has a second receiving section for receiving a second narrow side of the plate-shaped object in a form-fitting manner at least in two spatial directions, and further including a flexibly designed traction belt which is connected to the first holder and the second holder and which is designed for transmitting traction force between the first holder and the second holder for fixing the plate-shaped object.