Railway engineering vehicle axle gear box

The utility model relates to an axle gear box of a railway engineering vehicle, which comprises a box body mechanism, a mechanical screw mechanism and a gear engaging and disengaging operating system,the box body mechanism comprises an axle gear box body (8), a swing type gear engaging and disengaging mechanism, a gear speed reducing mechanism and the like, and the swing type gear engaging and disengaging mechanism comprises a connecting rod (3), an oil cylinder (6) and the like. The mechanical screw mechanism comprises an end cover (11), a stop block (12) and the like. The gear disengagementand engagement control system comprises an energy accumulator (20), an electromagnetic valve (21) and the like. An axle gear box layout structure is used as a carrier, a piston rod of an oil cylinder(6) reciprocates to drive a gear disengagement and engagement mechanism to achieve gear disengagement and engagement, and four gear disengagement and engagement methods under normal, abnormal and emergency conditions are provi