Flexible wind generating set transmission system

Abstract

The invention relates to a flexible wind generating set transmission system which comprises an impeller and a main shaft, wherein the front end of the main shaft extends into a hub of the impeller, and a ring-shaped elastic buffer disc sheathed on the main shaft is arranged in the hub of the impeller. The surface of the elastic buffer disc is in a stair shape transited from an inner circle to an outer circle and comprises an inner-ring stair surface and a turning-outward outer-ring stair surface. A convex ring is arranged on the main shaft, the inner-ring stair surface clings to the inner side face of the convex ring and is connected with the inner side face of the convex ring together, and the outer-ring stair surface clings to the outer end face of the hub of the impeller and is connected with the outer end face of the hub of the impeller together. A gap between the elastic buffer disc and the main shaft is filled with a rubber shock absorbing body. The flexible wind generating set transmission system has the beneficial effects that when wind regimes are abruptly changed, the flexible wind generating set transmission system can buffer capsizing moment transferred to the transmission system from the impeller and can reduce load of a bearing of the main shaft, so that the transmission is stable. Meanwhile, the loading of a yaw bearing can also be reduced, and the design cost is also reduced.

Description

technical field [0001] The invention relates to a flexible wind power generating set transmission system. Background technique [0002] At present, the transmission system of wind turbines is mostly rigidly connected. When the wind turbine is generating electricity, the transmission system directly bears the instantaneous and changeable overturning moment and torque from the impeller. There is no buffer, and the transmission is not stable, which affects the normal operation of the generator set. The main shaft bearing at the front end of the transmission system is under severe stress, which is likely to cause damage to the bearing. Contents of the invention [0003] In order to solve the above technical deficiencies, the present invention provides a flexible wind power generating set transmission system, which can play a buffer role and make the transmission more stable. [0004] The present invention is achieved through the following measures: [0005] A flexible wind p...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the drive trains of wind turbines are rigidly connected. When the wind turbines are generating electricity, the drive trains directly bear the instantaneous and changeable overturning moments and torques from the impellers. There is no buffer, and the transmission is not stable, which affects the normal operation of the generator sets.

The main shaft bearing at the front end of the transmission system is under severe stress, which is likely to cause damage to the bearing

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