Lifting mechanism for spindle box of milling machine

The utility model relates to a lifting mechanism for a spindle box of a milling machine. The lifting mechanism comprises a rack, a mounting frame hinged to the rack and a milling spindle box mounted on the rack, a front wheel is mounted on the rack; a rear wheel is mounted on the mounting frame; the milling spindle box is positioned between the front wheel and the mounting frame; an electric push rod is arranged on the rack; the driving end of the electric push rod is hinged to the mounting frame, and the cylinder body end of the electric push rod is connected with the rack through a hand-cranking screw rod and used for driving the mounting frame to turn over so as to adjust the milling depth of the milling spindle box. The utility model not only has the advantages of fine adjustment and easy control of the milling depth controlled by the hand screw, but also has the advantage of efficient lifting of the electric push rod, and solves the technical problems existing in the prior art. 本实用新型涉及一种铣刨机主轴箱升降机构，包括机架、铰