Yaw speed reducer output device

Abstract

The invention provides a yaw speed reducer output device which comprises a first shell, an upper bearing installed on the first body, an output shaft gear, a half-surrounded second shell in matched connection with the first shell through a cylindrical pin, a lower bearing installed on the second shell, an eccentric ring on the outer face of the second shell, and upper and down dustproof rings forsealing lubricating grease of the upper and lower bearings. In the yaw speed reducer output device, two-end supporting is adopted for the output shaft gear, the tooth face load is uniform when an output small gear is engaged with a rotary large gear ring, and the gear strength is improved. In order to solve the problem of stress uniform load when multiple yaw speed reducers are engaged with the rotary large gear ring, the tooth side gaps of pairs of engaged teeth are ensured same, the eccentric ring is adopted for each yaw speed reducer to adjust the gear engagement center distance, namely theside gap, it is ensured that the output shaft gear is correctly engaged with the large gear ring, and the problem that the gap position of the half-surrounded second shell cannot be changed is solved. On the other hand, the second shell plays a protection role in the output small gear.

Description

technical field [0001] The invention relates to the technical field of wind power generation transmission, in particular to a yaw reducer. Background technique [0002] At present, with the rapid rise of offshore wind power generation, large-megawatt-level wind power generation units above 3MW have developed rapidly. The yaw reducer is one of the essential devices in the wind turbine control system. The main function of the yaw reducer is to drive the nacelle to rotate and track the change of the wind direction. After the yaw process is over, it acts as a part of the brake nacelle. , which plays an extremely important role in the amount of power generated by wind turbines. [0003] The yaw reducer is located at the bottom of the nacelle, a large rotary ring gear is installed on the tower side of the wind turbine, multiple yaw reducers are assembled on the nacelle side, and the machine base installed on the nacelle is used to support and fix multiple yaw reducer. Among the...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the output structure 1 of the yaw reducer includes a housing 11, a first upper bearing 12 and a second upper bearing 13 installed on the housing 11, and a gear 14 of the output shaft. The output of the existing yaw reducer The shaft adopts a cantilever structure. The main problem of this structure is that the two bearings are unevenly stressed. The bearing of the gear 14 near the output shaft is heavily stressed and easily damaged. In order to meet the requirements of use, it is difficult to select the bearing type during design. Seriously, the meshing and partial load of the tooth surface is serious, which reduces the strength of the gear

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