High-power compound planetary wind power gear box

Abstract

The invention discloses a high-power compound planetary wind power gear box which comprises a supporting arm, a torque arm, a main shell, a transition plate, a rear shell and an output end cover. According to a first-stage compound planetary gear train, a hollow driving shaft is engaged with outer gears on three short planetary shafts and three long planetary shafts through an inner gear in rigid connection with the hollow driving shaft and then engaged with a sun gear through planetary gears arranged in a double-layer mode at the rear ends of the planetary shafts, the sun gear is connected with an inner spline gear hub through a spline, the inner spline gear hub is in interference fit with an intermediate gear, the intermediate gear is engaged with a gear on a fixed shaft, an output gear is pressed on an intermediate shaft in an interference mode, an output gear is engaged with a gear on an output shaft, and then the output gear is connected with a generator of a fan through a coupler, so that torque transmission is achieved. The high-power compound planetary wind power gear box has the characteristics of high power density, large transmission speed ratio, small assembly size, high reliability and the like.

Description

technical field [0001] The invention relates to a wind power gearbox, in particular to a high-power composite planetary wind power gearbox. Background technique [0002] In the existing compound planetary wind power gearbox, the torque is split from the ring gear to the sun gear through 3 to 4 planetary gear sets. Each planetary gear set includes at least two planetary gears, one of which is the primary planetary gear and the ring gear and one of the secondary planetary gears meshes with the sun gear. [0003] In the same radial space, limited by the center distance of the ring gear, the transmission ratio of the compound planetary stage with more than 4 planetary gear sets will continue to decrease, resulting in the inability to increase the number of planetary stage power splits and the power density of the gearbox. The method of increasing the power of the compound planetary gearbox with 3 to 4 planetary gear sets commonly used at present is mainly to increase the rigidi...

AI Technical Summary

Problems solved by technology

[0003] In the same radial space, limited by the center distance of the ring gear, the transmission ratio of the compound planetary stage with more than 4 planetary gear sets will continue to decrease, resulting in the inability to increase the number of planetary stage power splits and the power density of the gearbox.

The method of increasing the power of the compound planetary gearbox with 3 to 4 planetary gear sets commonly used at present is mainly to increase the rigidity of all parts of the overall gearbox. This method ensures the bearing capacity of the rolling bearings used to support the planetary gear set. , resulting in a double increase in the size of rolling bearings, a sharp increase in manufacturing difficulty and price

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