Equal-line-speed reducer

Abstract

The invention provides an equal-line-speed reducer and belongs to the technical field of reducers. According to the equal-line-speed reducer, the problem that the single-stage reduction ratio of an existing planetary gear reducer is small is solved. The equal-line-speed reducer comprises a center gear, a fixed gear ring, a first planetary gear set, a planetary gear support, a second planetary gearset and a movable gear ring, the fixed gear ring, the movable gear ring and the center gear are coaxially arranged, and the center gear is located in the centers of the fixed gear ring and the movable gear ring. A first planetary gear is arranged between the fixed gear ring and the center gear and completes mechanical engagement of the fixed gear ring and the center gear, a second planetary gearis arranged between the movable gear ring and the center gear and completes mechanical engagement of the movable gear ring and the center gear, and the first planetary gear and the second planetary gear are rotatably connected to the planetary gear support through rotary shafts correspondingly. Compared with the prior art, the machining technique of parts of the equal-line-speed reducer is mature,the whole structure is simple, no special requirement for materials is needed, the reduction ratio range is large, and cost is low.

Description

Technical field [0001] The invention belongs to the technical field of reducers, and relates to a constant linear speed reducer. Background technique [0002] Planetary gears refer to a gear system that, in addition to being able to rotate around its own axis of rotation like fixed-axis gears, their axis of rotation also rotates with the planet carrier around the axis of other gears. Compared with ordinary gear transmission, planetary gear transmission has many unique advantages. The most notable feature is that power can be split when transmitting power, and the input shaft and output shaft are on the same horizontal line, so planetary gear transmission has been widely used. It is applied to reducer, speed increaser and speed change device in various mechanical transmission systems. [0003] The existing planetary gear reducer simply transmits power to the planetary gears through the sun gear and the ring gear, and then finally outputs the power through the planetary gear carrier...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the single-stage reduction ratio of the existing planetary gear reducer is small, the multi-stage external dimension is large, it is not suitable for joint robots, and the cost of using harmonic and RV reducers is high, and a kind of Unique constant linear speed reducer with two sets of planetary gears and two sets of ring gears to achieve double-stage reduction effect

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