Tool for controlling perpendicularity of bolt at root of wind turbine blade and bolt mounting method

Abstract

The invention discloses a tool for controlling the perpendicularity of a bolt at the root of a wind turbine blade and a bolt mounting method. The tool sequentially comprises two halves of split rubbersleeves, two halves of split metal sleeves and two sleeve locking rings, which are concentrically arranged from inside to outside, wherein the two sleeve locking rings are in threaded connection withthe outer surfaces of two end parts of the metal sleeves respectively; the inner diameters of the rubber sleeves are matched with the outer diameter of a small-diameter section of the smooth surfacein the bolt, the outer diameters of the rubber sleeves are matched with the inner diameters of the metal sleeves, the outer diameters of the metal sleeves are 0.5 mm smaller than the inner diameter ofa bolt hole in the root of the wind turbine blade, and the inner diameters of the sleeve locking rings are greater than the outer diameter of a large-diameter section of a thread; the metal sleeves are plugged into a port of the bolt hole in the root of the wind turbine blade in parallel so as to guarantee the perpendicularity of the bolt penetrating through the rubber sleeves when the bolt is connected with the bolt hole. The tool can guarantee that the bolt is perpendicular to the end surface of the root of the wind turbine blade, therefore, the problem of a large bolt perpendicularity deviation in the mounting process of the bolt at the root of the wind turbine blade is solved.

Description

technical field [0001] The invention relates to the technical field of auxiliary tooling for bolt system assembly of wind power blades, in particular to a tool for controlling verticality of bolts at the root of wind power blades and a bolt installation method. Background technique [0002] Fiberglass wind turbine blades are one of the key components of wind turbines, and are connected to the hub through a certain root connection. The most common blade root connection method is "T-bolt connection". This design requires special drilling equipment to drill bolt holes and nut holes at the blade root after the blade is demoulded, and then install the bolts and nuts into the bolt holes. Connect to the nut hole. In order to ensure that the blade bolts can be well connected with the pitch bearing of the wind turbine, it is necessary to ensure that the blade bolts are perpendicular to the end face of the blade, and the design tolerance is generally required to be 0.2°. The bolts u...

AI Technical Summary

Problems solved by technology

At present, the installation of blade bolts and nuts is mainly done manually, but the diameter of the bolt hole is larger than the diameter of the bolt. The nut can rotate in the nut hole, and the bolt can move in the chord direction in the bolt hole. There is no guarantee that the bolt verticality of each bolt meets the design requirements

If the vertical deviation between the bolt and the end surface of the blade root is too large, it may cause that the bolt and the pitch bearing of the fan cannot be assembled, or the blade bolt and the pitch bearing are in contact during the operation of the fan, causing damage to the bolt

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