Reactive torque force transmission and vibration isolation device for speed reducer and mounting method

The invention discloses a reactive torque force transmission and vibration isolation device for a speed reducer and a mounting method, and relates to the technical field of mechanical transmission. The reactive torque force transmission and vibration isolation device comprises a main speed reducer casing, and is characterized by comprising a plurality of casing lugs, a machine body adapter, conical pins and vibration reduction wear-resistant rings, wherein a conical groove matched with each conical pin is formed in each casing lug, and the casing lugs and the conical pins are mounted in a conical surface centering mode; the upper portions of the conical pins are axially locked through locking nuts; outer rings of the vibration reduction wear-resisting rings are in centering fit with inner holes of the conical pins, and inner holes of the vibration reduction wear-resisting rings are in centering fit with the outer diameter of the machine body adapter; and axial vibration gaps and transverse vibration gaps are