Patent ID: 9206881
Filing Date: 2015-12-08
Classification: F16H

Abstract:
1. A rigid speed reducer with internal and external tooth profile tooth-enveloping, comprising: a first supporting frame; a second supporting frame, forming an accommodating cavity with the first supporting frame; an input shaft, mounted on the first supporting frame through a first supporting bearing; an output shaft, mounted on the second supporting frame; and a first-level speed-reducing mechanism and a second-level speed-reducing mechanism, which are mounted in an accommodating cavity, wherein, the first-level speed-reducing mechanism comprises: the second-level speed-reducing mechanism comprises: an internally meshing curved gear, sheathed on the second rotary arm bearing, and internally meshed and fitted with the gear pins; and the eccentric transmission gear is in transmission connection with the externally meshing curved gear through a dowel pin, the internally meshing curved gear is in transmission connection with the output disk through a transmission pin; the number of the gear pins is less than the number of teeth of the internally meshing curved gear and greater than the number of teeth of the externally meshing curved gear; a first reinforcing frame is arranged at one side of the externally meshing curved gear near the first supporting frame, the first reinforcing frame is mounted on the input shaft through a first bearing, multiple convex platforms are arranged on the first reinforcing frame, the externally meshing curved gear is correspondingly provided with multiple through-holes, the convex platforms of the first reinforcing frame pass through the through-holes and are fixedly connected to the eccentric transmission gear, the externally meshing curved gear is never in contact with the convex platforms in the process of motion; and a second reinforcing frame is also arranged at one side of the internally meshing curved gear, the second reinforcing frame is mounted on the eccentric transmission gear through a second bearing, multiple convex platforms are also arranged on the second reinforcing frame, multiple through-holes are correspondingly arranged on the internally meshing curved gear, the convex platforms of the second reinforcing frame pass through the through-holes and are fixedly connected to the output disk, and the internally meshing curved gear is never in contact with the convex platforms in the process of motion.