Planetary gear transmission device with small tooth difference and decelerator

Abstract

The invention relates to a planetary gear transmission device with small tooth difference and a decelerator. Therefore, problems in the prior art such as complicated structure of the planetary gear transmission device and severe part abrasion are resolved. The planetary gear transmission device with small tooth difference comprises an input shaft, an output shaft, an internal tooth ring, a planetary gear and a driving part. The input shaft is used for connecting with an external driving device. The output shaft is used for connecting to an external driven device. A revolving axle of the inputshaft and a revolving axle of the output shaft share the same axis. An eccentric shaft neck is arranged on the input shaft in a sleeved manner. The internal tooth ring is fixed onto a housing. The planetary gear is installed onto the eccentric shaft neck through a bearing. An internal meshing gear pair is formed between the planetary gear and the internal tooth ring. A mounting hole is arranged inthe planetary gear in the axial direction. One end of the driving part is installed in the mounting hole and the other end is mounted onto the output shaft. A rotary pair is formed by the driving part and the planetary gear. A movable pair is formed by the driving part and the output shaft. The rotating speed of the output shaft is the same as the self-rotating speed of the planetary gear.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission, in particular to a planetary gear transmission with a small tooth difference and a reducer. Background technique [0002] Small tooth difference planetary gear transmission is a kind of planetary gear transmission. Its core is a planetary gear transmission composed of a pair of internal meshing gears with a small difference in the number of teeth and an output mechanism, so it is called a small tooth difference transmission. Planetary gear transmission with small tooth difference is characterized by small size, light weight, large transmission ratio, stable operation, and strong bearing capacity, so it is widely used. [0003] In the prior art planetary gear transmission with small tooth difference, the gears can be involute or cycloidal pinwheels, etc. The planetary gear with external teeth is set on the input shaft of the reducer through bearings and eccentricity, and an interna...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a planetary gear transmission with a small tooth difference and a reducer to solve the problem that the structure of the planetary gear transmission in the prior art is complicated or the parts are prone to serious wear

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