Four-level gear reducer with two shafts concentric

Abstract

The invention relates to a four-level gear reducer with an input shaft and an output shaft concentric. The input shaft is provided with an input shaft gear and an idle duplicate gear III supported by a bearing; an idle duplicate gear I and an idle duplicate gear II supported by bearings are respectively sleeved on the left and right parts of an intermediate shaft; an output shaft gear is arranged in the middle of the output shaft; each duplicate gear consists of a large duplicate gear rim, a duplicate gear body and a small duplicate gear rim; according to the transmitted different torques and rotating speeds, the large and small rims of the duplicate gear are manufactured into different tooth number and modulus; the inside diameter of the duplicate gear body is determined based on the size of the bearings, and the other sizes of the duplicate gear body are identical; the input shaft gear is engaged with the large rim of the duplicate gear I; the small rim of the duplicate gear I is engaged with the large rim of the duplicate gear III; the small rim of the duplicate gear III is engaged with the large rim of the duplicate gear II; and the small rim of the duplicate gear II is engaged with the output shaft gear. The four-level gear reducer with the input shaft and the output shaft concentric has the characteristics of concentricity of the input shaft and the output shaft as well as four-level reduction, and can achieve higher transmission ratio.

Description

technical field [0001] The technology of the invention mainly relates to a gear reducer, which is especially suitable for a gear reducer whose input shaft and two output shafts are concentric, and belongs to the technical field of reducer equipment. Background technique [0002] In modern machinery, many machines need reducers, and reducers are used in various fields of the national economy. The performance and complexity of the reducer largely depend on the structure of the reduction mechanism. Taking the gear reducer as an example, the larger the required transmission ratio, the more complex the structure, the more reduction stages required, the more corresponding shafts, the larger the volume and the greater the quality of the reducer. . [0003] The reducers currently used by people include gear reducers, worm gear reducers, planetary gear reducers, cycloid reducers and harmonic reducers. The gear reducer has the advantage of simple structure and easy processing, but ...

AI Technical Summary

Problems solved by technology

This structure determines that the number of shafts must be one more than the number of gear pairs, that is, the number of reduction stages. If a reducer with a large transmission ratio is to be manufactured, the number of shafts must be increased while increasing the number of gear pairs, so that the volume of the reducer It is bound to increase, and its weight also increases; the mechanical efficiency of the worm gear reducer is low, and the turbine needs to be wear-resistant material, which is expensive; the planetary gear reducer, cycloid reducer and harmonic reducer, the other The structure is complex, the processing precision is high and the manufacturing process is difficult, and some require special equipment, so the manufacturing cost is high

Images