It is high -speed than multistage reduction gear of planet wheel

The utility model relates to an it is high -speed than multistage reduction gear of planet wheel, include by sun gear turriform gear train, planet wheel turriform gear train, preceding planetary gear train that preceding ring gear is constituteed and by the rear sun gear, the back row star gear, the back planetary gear train that back ring gear is constituteed, big gear (the n=2 of dress on the spline housing that arrange in proper order in little back before sun gear turriform gear train is pressed by n is individual, 3, 4 ), the epaxial gear of planet wheel is in the front adorned by n is individual according to little the arranging in proper order in preceding big back to planet wheel turriform gear train, on the preceding ring gear according to tower distribution have n respectively with planet wheel turriform gear train on the ring gear of each gear correspondence meshing, spline housing slidable ground suit is on power input shaft, when the spline housing slides on the input shaft, each gear on the sun gear turriform gear train can be not simultaneously respectively with the gear engagement of the epaxial correspondence of star gear that moves ahead, form a n different speed reducing ratio. The utility model discloses can, needs facilitate the use under often changing the behavior of velocity ratio.