Wind-driven generator group wheel box

Abstract

The invention discloses a wind power generating set gear case. A bearing used in the gear box is a hollow cylindrical roller bearing. Preferentially, the hollow cylindrical roller bearing comprises an outer ring, a hollow cylindrical roller and an inner ring; and the hollow cylindrical roller is a rolling body of the bearing. Preferentially, in the hollow cylindrical roller bearing, the diameter of an inner ring raceway is slightly larger than the diameter of an incircle of the rolling body arranged in an outer ring raceway; and interference fit is realized between the inner ring raceway and the incirle. Compared with a solid cylindrical roller bearing used by the prior art, the rolling body of the hollow cylindrical roller bearing is a hollow roller; as the inside of the inside roller has a hollow structure and good deformation capability, the bearing can adopt an interference fit form with the diameter of the inner ring raceway slightly larger than that of the incircle, thereby realizing the stress of the roller, prolonging the service life of the bearing and reducing the fault of the bearing; and the bearing can also reduce the diameter pendulum of a shaft and improve the cooling effect. For the reasons given above, the wind power generating set gear case has longer fault-free use time.

Description

technical field [0001] The invention relates to wind power generation technology, in particular to a wind power generating set gearbox. Background technique [0002] At present, non-renewable energy sources such as petroleum and coal are gradually being exhausted, and energy issues have become the primary problem that plagues the development of the world economy. The utilization of various renewable energy sources has received increasing attention. [0003] Wind energy is a renewable energy that has been widely used. In today's new energy situation, the development of wind energy has become the focus of current renewable energy utilization. The use of wind energy to generate electricity is the main means of current wind energy utilization. [0004] Wind turbines have been extensively studied. Wind power generators use large wind rotors to obtain wind power and drive generators to generate electricity, thereby realizing wind power generation. Due to the slow rotation speed ...

AI Technical Summary

Problems solved by technology

In this case, generally only two to three rolling elements that move to the lower part are stressed, and the axes of the inner and outer rings cannot be completely coincident, which makes the shaft continue to make small circumferential swings during work, making the gear teeth There is uneven load between them, which reduces the load-carrying capacity of the transmission parts, and it is more likely to cause broken teeth due to uneven load

Moreover, the bearing rolling body itself is subject to a highly variable periodic alternating load, resulting in a reduction in the fatigue life of the bearing

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