The invention discloses a clutch relay device which comprises a driving shaft. A gear is arranged on the driving shaft, a spring box is arranged on the lateral side of the gear, a plane volute spring is arranged between the driving shaft and the spring box, the inner end of the plane volute spring is wound on the driving shaft, and the outer end of the plane volute spring is connected with the spring box. The clutch relay device uses the change of a relative angle between the driving shaft and the gear to achieve the double-clutch effects, solves the problem that a gear and a rack are meshed and demeshsed, solves the problem of collision and interference caused by desynchrony of double motors and guarantees stability of a relay process. The plane volute can achieve overrunning in a certain range, provides a certain range overrunning space, can keep pre-tightening force in an unloaded state and can restore the gear to the normal position.