Multi-stage gear transmission structure

Abstract

The invention discloses a multi-stage gear transmission structure, and belongs to the field of speed reducers. The multi-stage gear transmission structure comprises two or more stages of transmissionmechanisms, each stage of transmission mechanism comprises an input assembly and an output assembly, each output assembly comprises an output gear and two or more output eccentric wheels which are uniformly distributed in the circumferential direction of the output gear and attached to the output gear, and a center shaft of the output gear of the previous stage of transmission mechanism is connected with a rigid shaft of the input assembly of the next stage of transmission mechanism. The multi-stage gear transmission structure has the beneficial effects that through the cooperation of the twoor more stages of gears, the limitation of the relationship between the number of teeth and the diameter is avoided, the size of the multi-stage gear transmission structure cannot be synchronously increased under the condition that the large transmission ratio is achieved, and the purpose of high-power transmission is achieved; and meanwhile, a robot can meet multi-stage transmission and keep thecharacteristic that the structure is small and light.

Description

technical field [0001] The invention relates to the field of reducers, in particular to a multi-stage gear transmission structure. Background technique [0002] With the development of mechanical technology for hundreds of years, a variety of transmission methods have been abundant, and purely mechanical gear transmission is becoming more and more perfect. Almost all kinds of mechanical design requirements can find mature solutions, but in the past ten years In the robot market that has developed rapidly and is predicted to be ubiquitous in the future, the traditional gear multi-stage transmission reducer is in a marginal position, and most of the market demand is occupied by expensive RV reducers and harmonic reducers. And this itself is caused by the characteristics of the existing gear transmission. Generally, if the gear needs to achieve a relatively high transmission ratio reduction ratio, the driving wheel and the driven wheel must conform to the multiple relationship ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the gear transmission structure of the reducer in the prior art that in order to achieve a higher transmission ratio, the multiple of the number of diameter teeth must be met, the diameter of the number of driven gear teeth is too large, and the structure of the multi-stage cascade reducer is heavy, the present invention provides a multi-stage reducer. The stage gear transmission structure utilizes the cooperation between more than two stages of gears, and is not limited by the relationship between the number of teeth and the diameter. In the case of realizing a large transmission ratio, it can also keep its own size from synchronously increasing, achieving the purpose of high-speed transmission, and at the same time it can Make the robot meet the characteristics of multi-stage transmission and keep its own structure small and light

Images