Method for solving zero tooth abrasion of variable pitch bearing of wind generating set

Abstract

The invention discloses a method for solving zero tooth abrasion of a variable pitch bearing of a wind generating set. The method comprises the following steps that (1) a plurality of high-strength bolts are used for replacing connecting bolts with the corresponding number between the variable pitch bearing and blades in the high altitude, and then the remaining connecting bolts between the variable pitch bearing and the blades are removed; (2) the high-strength bolts are adjusted to enable the blades to move downwards; (3) two connecting plates are symmetrically installed on the blades, a lifting device is connected with the two connecting plates, and all the high-strength bolts are removed to enable the blades to be completely separated from the variable pitch bearing; (4) the variable pitch bearing is driven to rotate through a variable pitch of the wind generating set, and non-abraded teeth of the variable pitch bearing are rotated to the zero tooth position; (5) the lifting deviceand the two connecting plates are removed, and the blades and the variable pitch bearing are in butt joint; and (6) zero adjustment and debugging are conducted on the blades and the variable pitch bearing through a zero pointer. According to the method, the zero tooth abrasion problem of the variable pitch bearing is solved.

Description

technical field [0001] The invention relates to the technical field of wind power generating sets, in particular to a method for solving the wear of zero-position teeth of pitch bearings of wind power generating sets. Background technique [0002] Wind turbines capture wind resources through blades, thereby driving generators to rotate to generate electricity. Usually, when the impeller system with 2 or 3 blades starts from a stationary state to a rotating state, or encounters a typhoon or extreme wind speed and needs to be turned from a high-speed rotation state to a low-speed rotation or shut down, the rotation of the pitch bearing is required to adjust the blades state, the blade stays at the fixed position of the pitch bearing or the position of a few teeth of the pitch bearing (accounting for about 5% of all teeth of the pitch bearing) most of the time, and the blade will drive the generator to rotate as a whole in order to obtain energy. When it rotates slightly or ro...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for solving the wear of the zero-position teeth of the pitch bearing of a wind power generating set. The problem of zero tooth wear, the damaged pitch bearing can still be used, prolonging the service life of components, greatly reducing maintenance costs, and reducing economic losses caused by unit shutdown

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