Wind driven generator end cover broken bolt dismounting device and dismounting method thereof

Abstract

The invention discloses a wind driven generator end cover broken bolt dismounting device. A bearing is arranged in the center of a chassis; a rotating shaft rotates around the periphery of the chassis, and fits a bearing; a connecting end fitting a dismounting component is arranged at one end of the rotating shaft; the dismounting component comprises a drilling component for drilling a blind hole in a broken bolt, a tapping component for tapping the blind hole as a thread hole, and a screw rod component fitting the thread hole; the screw rod component comprises a screw rod; and the thread rotating direction of the screw rod is opposite to the thread rotating direction of the broken bolt. The dismounting device has the following beneficial effects: the broken bolt is drilled through the drilling component; then, the drilled hole is tapped; the screw rod component is connected with the tapped thread hole; and as the thread rotating direction of the screw rod is opposite to the thread rotating direction of the broken bolt, the broken bolt can be taken out through reversely rotating the rotating shaft, the operation is convenient and fast, the damage of a traditional thread and the dismounting of an outer end cover are not needed, the repair efficiency is greatly improved, and the repair cost is reduced.

Description

technical field [0001] The invention relates to the field of wind power generators, in particular to a wind power generator end cover broken bolt dismantling device and a dismantling method thereof. Background technique [0002] A wind turbine is an electrical device that converts wind energy into mechanical energy and mechanical energy into electrical energy. Mainly use the wind to drive the windmill blades to rotate, and then increase the speed of rotation through the speed increaser to promote the generator to generate electricity. [0003] The wind turbine end cover and the outer end cover are generally fixed by high-strength bolts. The outer end cover is made of thicker cast iron material. When the bolt breaks, a section of the broken bolt will remain in the end cover, making it difficult to remove the bolt. , due to the relatively high strength of the bolt and the relatively thick thickness of the outer end cover, when using a drill bit to crush the bolt, it is necess...

AI Technical Summary

Problems solved by technology

[0003] The wind turbine end cover and the outer end cover are generally fixed by high-strength bolts. The outer end cover is made of thicker cast iron material. When the bolt breaks, a section of the broken bolt will remain in the end cover, making it difficult to remove the bolt. , due to the relatively high strength of the bolt and the relatively thick thickness of the outer end cover, when using a drill bit to crush the bolt, it is necessary to use a longer length drill bit, and a longer length drill bit is left in the outer end cover, which is very easy to break when the drill bit contacts the bolt In addition, when the drill bit and the broken bolt in the end cover are drilled, it is very easy to deviate from the center, and normal drilling operations cannot be performed. Excessive deviation will damage the existing thread

[0004] Another is to use a milling cutter to crush the bolts. However, this method will damage the existing threads, resulting in the need for reaming and tapping, and the need to disassemble the entire outer end cover. It is very difficult to disassemble the outer end cover. Time-consuming and labor-intensive, on the one hand, the outer end cover is heavy, and often requires several maintenance workers to lift it at the same time; Maintenance creates difficulties

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