Wind power generation permanent magnetic yaw-variable pitch hypocycloid reduction gear box

Abstract

The invention relates to the technical field of wind power yaw and variable pitch gear boxes, and provides a wind power generation permanent magnetic yaw-variable pitch hypocycloid reduction gear box which comprises a motor outer shell, a stator, a permanent magnet, a hollow rotor and a cycloid component. The reduction gear box is characterized in that two sides of a rotor are respectively supported on a front end cover and an end cover inner hole through bearings, and the rotor inner hole is matched with an input shaft external spline in a sliding mode. Two ends of an input shaft are respectively supported on an output shaft and the end cover inner hole through bearings. The cycloid component comprises an input shaft upper eccentric bearing, a cycloid wheel, a hypocycloid gear ring and a pin shaft output mechanism. The output mechanism is composed of an output shaft, a pin, a column sleeve and a uniform load ring, and a shaft neck of the output shaft is supported in the engine base inner hole through the bearing. An outer circle of a shaft neck of the uniform ring is supported in the center hole of the front end cover through the bearing. The wind power generation permanent magnetic yaw-variable pitch hypocycloid reduction gear box has the advantages of being high in bearing capacity, and reliable in use, simplifying the machine types due to the fact that the variable pitch or the yaw is in the same structure, being low in cost, short in axial direction, and simple in structure. The manufacturing cost of the reduction gear box is about 45%-55% than that in the prior art.

Description

technical field [0001] The invention relates to the technical field of wind power yaw and pitch variable gearboxes, and relates to a wind power permanent magnet yaw-pitch internal gear box that can be used as a pitch or yaw reducer by changing the frequency, number of pole pairs, and cycloid reduction ratio, respectively. Cycloidal gearbox. Background technique [0002] (1) Pitch variable gearbox: ①Nanjing High Speed ​​Gear Company "Wind Power Generator Pitch Variable Gearbox" (ZL200410064931); ②Chongqing Gearbox Company "Wind Power Generation Variable Pitch Reduction Gearbox" (200720188097); ③Tianjin Reducer Company Pitch gear reducer for wind power generation” (200720125070); ④ Hangzhou Qianjin Wind Power Company “wind power pitch reduction gearbox” (200920116858); ⑤ Tailong Group “wind power pitch reduction gear” (200910034380). They are all three-level planetary structures, and their main problems are: [0003] (1) The safety factor of the existing gearbox is low, such...

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Problems solved by technology

[0007] (3) The four-stage planetary deceleration makes the axial dimension very long, the structure is very complicated, the maintenance is very inconvenient, and the price is high

[0008] In addition, there are the following technologies: (1) Tianjin reducer company "used for wind power generation yaw reducer" 200320111939.2 series cycloid + two-stage planetary structure, the disadvantages are: the efficiency is reduced by 2 percentage points, and the high-speed cycloid double fulcrum needle Pin structure, so the overload capacity is low and the reliability is poor; (2) Chongqing University "A Secondary Envelope..." 200920127322.7 is a cycloid + cycloid structure, the disadvantage is: the efficiency is reduced by 4 percentage points, and the output shaft is two Bearings are 2-3 models larger than conventional ones, and the price is very high;

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