Fan and wind wheel locking device thereof

Abstract

The invention discloses a fan and a wind wheel locking device thereof. The disclosed wind wheel locking device comprises a lock body and a locking disk, wherein the lock body is arranged on a rack of the fan; the locking disk is fixedly connected with a wind wheel of the fan; a lockpin is arranged in a cavity of the lock body; a locking hole cooperated with the lock pin is arranged in the lockingdisk; axial center lines of the lock body and the lockpin are mutually parallel and spaced by a preset distance; the lock body and the lockpin can synchronously rotate around the center line of the lock body; and the lock body and the rack are provided with at least two fixed connection positions. The wind wheel locking device has the advantages of obviously increasing the locking reliability of the wind wheel and prolonging the service life of the wind wheel; in the mean time, under wind action, the back-and-forth rocking range of the wind wheel is obviously decreased; and therefore, the reliability of the wind wheel is increased, the service life of the wind wheel is prolonged and the potential safety hazard of a unit and maintenance personnel is reduced.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a wind wheel locking device for a fan. In addition, the present invention also relates to a fan comprising the above-mentioned wind wheel locking device. Background technique [0002] Large-scale wind turbines are usually complex in structure and bulky (the weight of the host equipment on the top of the tower is almost more than 100 tons), and the operating height of the unit is tens of meters or even more than 100 meters. Due to the severe force of the large fan in the running state, it is inevitable that the unit will experience abnormalities or failures during operation. Once the unit is abnormal or malfunctions, the unit must be shut down quickly. At this time, the pneumatic brake and hydraulic brake are first put into use according to the design procedure, so that the rotating speed of the wind wheel is reduced to a certain range. Finally, the wind wheel loc...

AI Technical Summary

Problems solved by technology

[0009] 1) The locking pin of the wind wheel and the locking hole of the locking disc 112 cannot be effectively contacted, which directly causes excessive local contact stress;

[0010] 2) Due to the ineffective contact, there is a large gap between the locking pin of the wind wheel and the locking hole of the locking disc 112, so that the wind wheel cannot be effectively and completely locked. Under the action of the wind, the wind wheel will shake back and forth, and finally It may damage the wind wheel locking device 11 and bring safety hazards to the unit and maintenance personnel

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