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Anti-bending bolt connecting device for wind generating set and mounting method

A technology for wind turbines and connection devices, which is applied in wind power generation, connection components, thin plate connections, etc., can solve problems such as high cost, high complexity, and failure to fundamentally solve problems, so as to reduce bending moment load and improve reliability The effect of reducing stress concentration

Active Publication Date: 2022-06-03
BEIJING SANLI XINNENG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is complex and costly, and does not solve the problem fundamentally. Once a dangerous working condition occurs, the bolts cannot be broken.

Method used

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  • Anti-bending bolt connecting device for wind generating set and mounting method
  • Anti-bending bolt connecting device for wind generating set and mounting method
  • Anti-bending bolt connecting device for wind generating set and mounting method

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Embodiment Construction

[0023] In order to make the purposes and technical solutions of the embodiments of the present invention clearer, the embodiments of the present invention are fully described below with reference to the related drawings of the embodiments of the present invention. This patent describes only some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] like figure 1 , figure 2 and image 3 The sectional view of the connection scheme of the slewing bearing of the wind turbine (such as the pitch slewing bearing or the yaw slewing bearing) is shown, and the roller bearing 6 is located between the rotating ring and the fixed ring. The anti-bending bolt connection device is mainly composed of a bolt 1, a clamping part 2 and a connected part 3. There are generally two connected parts 3—connect...

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Abstract

The invention discloses an anti-bending bolt connecting device for a wind generating set and a mounting method. The bolt connecting device is composed of a bolt, a tightening piece and a connected piece. The number of the connected pieces is at least two, and bolt holes are reserved in the connected pieces. The tightening piece is of a split structure and is composed of at least two parts. And the tightening piece can wrap part of a screw rod of the bolt. At least one connected piece is provided with a stepped hole, the stepped hole is composed of a large-diameter taper hole and a small-diameter hole, the small-diameter hole is a part of a bolt hole, and the tightening piece can be placed in the large-diameter taper hole. The tightening piece is arranged in the large-diameter taper hole, deformation of a part of a polished rod of the bolt after the polished rod is loaded is limited, then the action of a bending moment load borne by a protected thread is greatly reduced, and bolt connection becomes more reliable after stress concentration is eliminated.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a bending-resistance bolt connection device and an installation method for a wind power generating set. Background technique [0002] Wind turbines are large-scale rotating machinery, and must withstand loads such as wind, centrifugal force and gravity while continuously generating electrical energy during their life cycle. At present, the most commonly used and most reliable way of connecting mechanical parts in wind turbines is bolt connection. Due to the operating characteristics of wind turbines, most of the bolts in the load-bearing members must be subjected to bending moment loads. [0003] The trend of large-scale modern wind turbines is obvious, and the increase in the diameter and rated power of the impeller leads to the continuous increase of the load of the whole machine. This puts forward new requirements for the bearing capacity of bolts. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B5/02F16B35/00
CPCF16B5/02F16B35/00Y02E10/72
Inventor 崔新维崔逸南
Owner BEIJING SANLI XINNENG SCI & TECH
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