Planetary reducer with small tooth difference

Abstract

The invention discloses a planetary reducer with small tooth difference. A power part is mounted at one end of a mounting flange; a planetary reducing mechanism is mounted at the other end of the mounting flange; the front end of the planetary reducing mechanism is connected with a crossed roller bearing; the power part drives the planetary reduction mechanism to move to drive the crossed roller bearing to output power; the planetary reducing mechanism comprises a sun wheel connected with the power part, an inner gear ring fixedly connected to the mounting flange, a planet wheel and a planet carrier; the crossed roller bearing comprises an outer ring, an inner ring and a roller; the outer ring is fixedly connected with the inner gear ring; the inner side of the inner ring is provided withan output gear ring; an axial part of the outer ring of the planet wheel is meshed with the inner gear ring, and the other parts of the outer ring of the planet wheel are meshed with the output gear ring; the inner side of the inner ring is in transmission connection with the planet carrier; the front end of the inner ring is connected with an output end; and the number of the teeth of the outputgear ring is larger than the number of the teeth of the inner gear ring. With the above technical schemes of the invention adopted, the planetary reducer with the small tooth difference can output a large reduction ratio and has the advantages of high rigidity, large torque, stable rotating torque and high bearing capacity.

Description

technical field [0001] The invention relates to the field of reducers, in particular to a planetary reducer with small tooth difference. Background technique [0002] The reducer is used to reduce the speed of the prime mover and increase the torque at the same time to output the power required by the working machine. In the existing reduction mechanism, the commonly used reducers are: gear reducer, worm gear reducer, harmonic reducer, planetary reducer, etc., as a special form of planetary reducer, the reducer with small tooth difference uses The small difference in the number of teeth between the internal and external gears skillfully realizes a large transmission ratio, and the overall structure is compact, so it is used more and more in industry. [0003] The existing reducer with small tooth difference has a complex structure and can meet the same output torque and transmission ratio, but the overall reducer has a large volume and a relatively complicated design, which...

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Problems solved by technology

[0003] The existing reducer with small tooth difference has a complex structure, and can meet the same output torque and transmission ratio, but the overall size of the reducer is relatively large, and the design is relatively complicated, which cannot meet the needs of use

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