Spiral bevel gear commutation mechanism

The invention relates to a spiral bevel gear commutation mechanism, relates to the technical field of transmission equipment and solves technical problems of small transmission torque and failure of output of a spiral bevel gear commutation mechanism in multi-directions in the prior art. The spiral bevel gear commutation mechanism comprises a commutato and a decelerator. Bipolar deceleration and torque increase can be realized via a gear mechanism and a gearbox of the commutator; besides, a second longitudinal axis of the commutator is connected with an input shaft of the decelerator, and output in three directions can be obtained, namely output of two ends of a transverse axis and an output of the second longitudinal axis connected with the decelerator; during the output, a rotation direction of the transverse axis is the same as a rotation direction of the second longitudinal axis and opposite to a rotation direction of a first longitudinal axis; and output in a plurality of directions can be achieved. 本发明涉