Multi-shaft tightening device for railway wagon

The invention provides a multi-shaft tightening device for a railway wagon, and relates to the field of railway equipment tooling, the multi-shaft tightening device comprises a fixed plate, two movable plates and tightening mechanisms, the two movable plates are respectively connected with the fixed plate in a sliding manner and are oppositely arranged at intervals, each movable plate is provided with at least one tightening mechanism, and a first driving part is connected with the movable plates to change the distance between the two movable plates; a positioning plate is arranged between the two movable plates, the side face, facing the movable plates, of the positioning plate is provided with at least two positioning steps, and the second driving part is connected with the positioning plate so as to adjust the positioning steps abutting against the movable plates; in order to solve the problem that the adjusting precision of tightening shafts of existing interval-adjustable multi-shaft tightening equipment