Novel planetary gear reducing mechanism and reducer

Abstract

The invention discloses a novel planetary gear reducing mechanism and a reducer, and relates to the technical field of reducers. The novel planetary gear reducing mechanism comprises a first-stage transmission component and a second-stage transmission component, wherein the ratio of the number of teeth of a second ring gear of the second-stage transmission component to the number of teeth of a second sun gear and the ratio of the number of teeth of a first ring gear of the first-stage transmission component to the number of teeth of a first sun gear have a difference value. Tests show that the smaller the absolute value of the difference value is, the larger the transmission ratio of the novel planetary gear reducing mechanism is, the smaller the fixed-axis rotation speed of a second planet carrier is, and when the absolute value of the difference value is infinitely close to zero, the transmission ratio of the novel planetary gear reducing mechanism can be infinitely increased, and the fixed-axis rotation speed of the second planet carrier can be infinitely reduced. By means of the arrangement, the transmission ratio can be increased only by reducing the absolute value of the difference value, and the problems that in the prior art, due to the fact that the reduction ratio of the reducer is increased by increasing the number of stages of the reducer, the structure is complex, and the size is large are solved.

Description

technical field [0001] The invention relates to the technical field of reducers, in particular to a novel planetary gear reduction mechanism and a reducer. Background technique [0002] Planetary gear reducer, also known as planetary reducer, servo reducer. In the reducer family, planetary reducers are widely used in servo motors, stepping motors, DC motors and other transmission systems due to their small size, high transmission efficiency, wide deceleration range, and high precision. Its function is to reduce the speed, increase the torque and reduce the moment of inertia ratio between the load and the motor under the premise of ensuring precision transmission. The main transmission structure of planetary gear reducer includes planetary gear, sun gear, inner ring gear and planet carrier, but due to its structure, the minimum single-stage reduction is 2.8, and the maximum generally does not exceed 12.5. Common reduction ratios are: 3, 4, 5, 6, 8, 10, when a reducer with a...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems existing in the related technology at least to a certain extent, the application provides a new type of planetary gear reduction mechanism and reducer, which can solve the problem of reducing the speed of the reducer in the prior art by increasing the number of stages of the reducer. The problem of complex structure and large volume caused by the reduction ratio

Images