Gearbox gear shifting interlocking device

The utility model discloses a gearbox gear shifting interlocking device which is arranged between a shell and a cover body of a gearbox and comprises a positioning ejector rod installed on the shell in a sliding mode, and a positioning steel ball corresponding to a positioning groove in a shifting fork sliding rod is arranged at the inner end of the positioning ejector rod. An interlocking shaft mounting hole is formed in the cover body, an interlocking rotating shaft is rotatably mounted in the interlocking shaft mounting hole, and an axial limiting device is arranged between the interlocking rotating shaft and the cover body; the cover body is provided with an interlocking avoiding hole for the outer end of the positioning ejector rod to extend into the interlocking shaft mounting hole, and the interlocking rotating shaft is provided with an unlocking avoiding groove corresponding to the outer end of the positioning ejector rod; and the end part, extending out of the interlocking shaft mounting hole, of the