Steering frame and axle box positioning device thereof

The utility model discloses an axle box positioning device which comprises a framework, an axle box and two springs, wherein the two springs are symmetrically arranged between two sides of the axle box and the framework, and the axle box positioning device further comprises two sets of clearance adjusting units which are arranged corresponding to the two springs. Each set of clearance adjusting unit can be detachably arranged between the framework and the corresponding spring. Compared with an axle box positioning device in the prior art, the clearance adjusting units in the axle box positioning device can be conveniently mounted on or dismounted from the framework. When creep occurs to the springs, in order to keep the clearance distance between the framework and the axle box in an allowed range, only the clearance adjusting units are needed for adjusting the clearance between the framework and the axle box, and the axle box or the springs do not need to be dismounted, and therefore repairing and maintenance