Secondary envelope cycloid planet driving device

Abstract

The invention discloses a secondary enveloped cycloid planet transmission device, belonging to the technique of the planet speed reducer with small tooth difference. It can solve the problems of present cycloid planet transmission that single-line contact and larger reverse-force of bearing. The invention comprises an input axle, left and right discs, a cycloid wheel, an inner gear wheel, a connecting axle, a rolling groove float disc output device and a bearing. Wherein, the inner gear wheel is enveloped by the planet motion of cycloid wheel; the tooth of cycloid wheel and the tooth of inner gear wheel form the conjugated meshed couple; the left and right float discs between the left disc and the left cycloid wheel and between the right cycloid wheel and the right disc form a output device while they are connected by rolling side groove; the rolling elements arranged axially and radially are filled into a support to form a radial / axial special bearing. The invention has dual-line connection, to improve the bearing ability and the lubricant property, to improve the transmission accuracy and prolong the service life.

Description

Technical field: [0001] The invention relates to a planetary reducer with a small tooth difference, which is a precision and power transmission device. Background technique: [0002] On December 23, 2005, Chongqing University filed an invention patent application with the State Intellectual Property Office with the "Double Disc Cycloid Planetary Transmission Device", with the application number being 200510057463.2. The device includes a needle wheel, which is composed of a main body, a needle tooth and a needle tooth sleeve; the left and right discs are respectively located at the left and right ends of the main body and are connected as a whole by a connecting piece. There is a radial / between the left and right discs and the main body. Axial special bearing. The left and right ends of the input shaft are respectively supported by bearings located in the inner holes of the left and right disks. The input shaft is equipped with a double eccentric bearing and two cycloidal wheel...

AI Technical Summary

Problems solved by technology

Both the transmission device and the ordinary cycloidal pinwheel planetary transmission device have the following disadvantages: the meshing of a pair of teeth of the pinwheel and the cycloidal wheel is single-line contact, the curvature of the induction method is large, and the load-carrying capacity is not high; the pin shaft output mechanism produces The radial force of the eccentric bearing increases the force of the eccentric bearing, which affects the life of the bearing; the sliding caused by the pin sleeve on the connecting piece is large, which affects its transmission efficiency; the spacer between the radial and axial rolling elements of the special bearing is larger If there are too many, a large cumulative error will be generated, resulting in difficulty in assembly and affecting the rolling performance of the bearing

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