Megawatt multi-split wind power speed-increasing gearbox

Abstract

The invention relates to a megawatt multi-split wind power speed-increasing gearbox, in particular to a fixed shaft type multi-split speed-increasing gearbox taking the fixed axle transmission principle as the basis and a movable axle planetary structure as the framework, belonging to the technical field of wind power speed-increasing gearboxes. The speed-increasing gearbox comprises a machine seat, an input shaft, an internal tooth ring, duplicate gears, a central gear or a third-stage speed-increasing gear pair and is characterized in that 3-6 duplicate gears are evenly distributed on the fixed stand, two idle gears are arranged between a shaft gear in each duplicate gear and the internal tooth ring, the transmission gear is meshed with the central gear, and 6-12 split flows or 3-6 split flows are respectively formed. The invention has the advantages that: (1) the weight is lighter by 35 to 45 percent than that of the prior product home and aboard, and the contour is reduced by 40 to 50 percent; (2) the single part is light, and the assembly, the disassembly and the maintenance are convenient; and (3) the domestically produced gear shaper, the gear grinding machine and other devices can be processed into a 3-5MW extra-large machine type, therefore, the manufacturing cost is greatly reduced.

Description

[technical field] The invention relates to the technical field of wind power speed-up, and relates to a megawatt-level multi-shunt wind power speed-up box. [Background technique] Wind energy is an inexhaustible, non-polluting, renewable energy source. It is predicted that by 2020, wind power will become the third largest energy source in my country, so the wind power speed-up box contains a huge market of tens of billions. The gearbox is one of the three core technologies of wind turbines, and the current mainstream models in the world are 1.5-2MW. Since the wind power gearbox is located in a harsh environment and at an altitude of 60 to 70 meters in remote areas, strict requirements are put forward for the gearbox: the service life is 20 years, the bearing life is 130,000 hours, it is as small as possible and light as possible, and it is easy to assemble, disassemble and maintain. Several large enterprises in China have the following patents: (1) NGC's "Wind Power Generat...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of the connector is poor mechanical strength, which increases the processing and installation errors. In addition, the temperature difference between the connectors and the deformation caused by different forces are not the same.

Due to the inability to adopt oblique internal teeth + cementite fire + grinding technology like large foreign companies, there is a big gap between our products and them

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