Axle box body, active radial bogie and railway vehicle

The utility model relates to the field of railway vehicles, and provides an axle box body, an active radial bogie and a railway vehicle. The axle box body comprises an axle box body which is provided with an axle matching hole used for installing an axle, and the upper end of the axle box body is suitable for being connected with a framework through a primary steel spring; the rotating arm is connected with one side of the axle box body and extends towards one side of the axle box body, an axial through hole is formed in the end, away from the axle box body, of the rotating arm, a primary positioning node is installed in the axial through hole, and a third installation groove with an upward opening is formed in the upper arm face of the rotating arm. The axle box body can be installed in cooperation with the driving radial device, and accurate positioning of the driving radial device is achieved. And mutual connection and mutual movement of the wheel pair and the framework can be realized. 本实用新型涉及轨道车辆领域，提供一种轴