Planetary transmission structure

Abstract

The invention provides a planetary transmission structure. The planetary transmission structure comprises a single-stage bevel gear box, a first sun gear, a first planetary carrier, a first inner gear, a second sun gear, a second planetary carrier and a second inner gear, wherein the single-stage bevel gear box comprises an output shaft; the output shaft, the first sun gear and the second sun gear are positioned on the same axis; the front end of the first sun gear is mounted on the output shaft; a first bearing is mounted between the rear end of the first sun gear and the front end of the second sun gear; an outer ring of the first bearing is fixed to the rear end surface of the first sun gear, and an inner ring of the first bearing is fixed to the front end surface of the second sun gear; the first planetary carrier is fixedly connected to the front end of the second sun gear; a second bearing is mounted between the rear end of the second sun gear and the second planetary carrier. According to the technical scheme, the planetary transmission structure has the advantages that two sun gears are correspondingly independently rotated around the corresponding bearings, so that direct contact can be avoided, and the friction can be greatly reduced.

Description

technical field [0001] The invention relates to a planetary transmission structure. Background technique [0002] In NGW planetary transmission, due to the axial fixation between the sun gears, friction due to relative motion will inevitably occur, which will lead to an increase in the axial gap between the sun gears and the heat of the reducer, thus affecting the planetary reducer. life. In order to reduce friction, the prior art adopts the method of adding a convex fixed pin from the shaft end, so that the convex fixed pin is integrated with the sun gear. Although this method has a certain effect, the effect is not good, and it has high requirements for heat treatment and processing. . SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide a planetary transmission structure which can reduce the friction of the sun gear and has a simple structure and is easy to process. [0004] In order to solve the above technical ...

AI Technical Summary

Problems solved by technology

[0002] In the NGW planetary transmission, due to the axial fixation between the sun gears, friction will inevitably occur due to relative motion, which will cause the axial gap between the sun gears to increase, and the reducer will heat up, thus affecting the planetary reducer. life

In order to reduce friction, the existing technology adopts the method of adding a convex fixed pin from the shaft end, so that the convex fixed pin is integrated with the sun gear. Although this method has a certain effect, the effect is not good, and it has high requirements for heat treatment and processing.

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