What is a planetary reducer？

The utility model discloses a planetary reducer.

The planetary reducer comprises a case, an input shaft, first-stage planet wheels, first-stage planet wheel axles, second-stage planet wheels and second-stage planet wheel axles.

The input shaft is connected with gears of the first-stage planet wheels to drive the first-stage planet wheels to rotate, the first-stage planet wheels are connected with a first-stage inner gear arranged on the case to rotate and are uniformly distributed in the first-stage inner gear through a first-stage planet carrier, and the first-stage planet carrier is in gear meshed connection with the first-stage planet wheel axles to form first-stage speed reduction; the case is connected with the second-stage planet wheels to drive the second-stage planet wheels to rotate, and the second-stage planet wheels can rotate in a second-stage inner gear arranged in the case and in gear meshed connection with the second-stage planet wheel axles to form second-stage speed reduction. The planetary reducer is reasonabl