Filtering speed reducer

Abstract

The invention relates to a filtering decelerator which comprises: an eccentric decelerating mechanism, a filtering spline mechanism and a three-direction end thrust bearing. The eccentric decelerating mechanism comprises: an eccentric wheel (6), a rolling bearing, a cylindrical gear (3) and an inner gear (1); the filtering spline mechanism comprises an eccentric wheel (6), a steel ball (5), a cylindrical gear (3) and an output inner gear (9); the three-direction end thrust bearing connect the inner gear (1) with the output inner gear (9), use the eccentric wheel to realize the deceleration of a pair of gear wheel that short of tooth tolerance; the filtering spline mechanism comprises a group of gear wheels that have the same tooth number and diameter, it filters the high order revolution wave and output low frequency rotary.

Description

technical field

[0001] The invention belongs to a mechanical transmission device in the field of mechanical engineering. Background technique

[0002] At present, there are many kinds of reducers, each with its own characteristics, which are widely used in various industries. However, with the development of production technology, new needs often arise. Such as aviation, aerospace, transportation and other fields, a reducer with large reduction ratio, compact structure, light weight and high efficiency is required. Under this requirement, the volume of the worm reducer is too large, and the mechanism of the cycloid reducer is too large. Complicated, the power transmitted by the planetary reducer is too small, etc., the harmonic reducer has the disadvantages of continuous high-frequency deformation of the flexible spline, easy fatigue damage, and thin wall is easy to damage. That is to say, there is currently no reducer that meets the above-mentioned industrial requirements...

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