Transmission mechanism

Abstract

The invention discloses a transmission mechanism. The transmission mechanism comprises an outer wheel, a first inner wheel, a second inner wheel and a first flange body. The outer wheel is provided with outer wheel internal teeth. The first inner wheel is provided with a first row of first inner wheel teeth and a second row of first inner wheel teeth which are arranged side by side, the first inner wheel is eccentrically arranged in the outer wheel, and the first row of first inner wheel teeth can mesh with the outer wheel inner teeth. The second inner wheel is provided with a first row of second inner wheel teeth, the second inner wheel is eccentrically arranged in the outer wheel, and the first row of second inner wheel teeth can mesh with the outer wheel inner teeth. The first flange body comprises first flange body teeth, and the first flange body teeth can mesh with the second row of first inner wheel teeth. Under the condition that the size of the transmission mechanism is not changed, an ultra-large speed ratio can be achieved, the size of an inner wheel bearing between the inner wheel and an eccentric shaft is large, and therefore the service life of an inner wheel bearingis longer.

Description

technical field [0001] The present application relates to transmission mechanisms, in particular to internal gear transmission mechanisms. Background technique [0002] Generally, an internal gear transmission includes a flange, an inner wheel, an input shaft, an inner wheel bearing and a planet carrier. An inner wheel bearing is disposed between the input shaft and the inner wheel. The inner wheel bearing needs to bear a large radial force and rotate at a high speed, so the inner wheel bearing is easy to wear and is the most easily damaged part in the internal meshing transmission. In addition, the speed ratio of the transmission mechanism is usually achieved by the mutual meshing of the inner wheel and the outer wheel, and the speed change and torque output need to be output through the pin sleeve mechanism or the cross linear bearing output mechanism, and the speed ratio of the single-stage transmission is usually small (for example, The speed ratio is 30-300), and the ...

AI Technical Summary

Problems solved by technology

The inner wheel bearing needs to bear a large radial force and rotate at a high speed, so the inner wheel bearing is easy to wear and is the most easily damaged part in the internal meshing transmission

In addition, the speed ratio of the transmission mechanism is usually achieved by the mutual meshing of the inner wheel and the outer wheel, and the speed change and torque output need to be output through the pin sleeve mechanism or the cross linear bearing output mechanism, and the speed ratio of the single-stage transmission is usually small (for example, The speed ratio is 30-300), and the application range is limited

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