System and method for assisting in the manufacture of a wind turbine blade shell

Patent metadata

Field	Value
Publication number	US-11241847-B2
Application number	US-201816144268-A
Country	US
Kind code	B2
Filing date	Sep 27, 2018
Priority date	May 31, 2013
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

A method of manufacturing a wind turbine blade shell part is described. Fibre mats and a root end insert are laid up in a mould part in a layup procedure by use of an automated layup system. The fibre mats are laid up by use of a buffer so that the fibre mats may continuously be laid up on the mould surface, also during a cutting procedure. The root end insert is prepared in advance and mounted on a mounting plate. The root end insert is lowered onto the mould by use of the mounting plate and a lowering mechanism. After the wind turbine blade shell has been moulded, the mounting plate is removed.

First claim

The invention claimed is:

1. A method of manufacturing a wind turbine blade shell part, wherein the wind turbine blade shell part is manufactured as a composite structure comprising a fibre-reinforcement material embedded in a polymer matrix, and wherein the wind turbine blade shell part is provided with a root end insert that, when manufactured, is accessible from a root end of the wind turbine shell part, and wherein the wind turbine blade shell part is manufactured in a mould provided with a moulding surface that defines an outer shape of the wind turbine blade shell part, the moulding surface extending along a longitudinal direction, wherein the method comprises the steps of:
a) arranging one or more outer fibre layers of the fibre-reinforcement material on the moulding surface, the one or more outer fibre layers defining an outer surface of the wind turbine blade shell part;
b) arranging the root end insert on a lowering device of the mould;
c) lowering the root end insert to the moulding surface of the mould via the lowering device, wherein the lowering of the root end insert to the moulding surface of the mould comprises:
c1) lowering the root end insert to the moulding surface while the root end insert is angled upwards in the longitudinal direction until a first end of the root end insert contacts a part of the moulding surface at the root end; and
c2) following step c1), tilting the root end insert until the root end insert rests on the moulding surface;

supplying a polymer to the one or more outer fibre layers; and
allowing the polymer to cure to form the composite structure of the wind turbine blade shell part.

2. The method according to claim 1 , wherein the root end insert prior to step b) is arranged on a mounting plate, and wherein the root end insert is arranged on the lowering device via the mounting plate.

3. The method according to claim 1 , wherein the root end insert comprises a plurality of fastening members.

4. The method according to claim 3 , wherein the plurality of fastening members comprise a plurality of bushings.

5. The method according to claim 3 , wherein the root end insert further comprises a plurality of inserts respectively arranged between the plurality of fastening members.

6. The method according to claim 1 , further comprising arranging one or more inner fibre layers of the fibre-reinforcement material on top of the root end insert.

7. The method according to claim 6 , further comprising supplying the polymer to the one or more inner fibre layers.

8. The method according to claim 1 , wherein the lowering device comprises a frame for carrying the root end insert and a driving means for lowering the frame together with root end insert.

9. The method according to claim 1 , wherein a frame and the root end insert are lowered onto the moulding surface of the mould via guiding slots and guiding pins or rollers.

Assignees

• Lm Wp Patent Holding As

Inventors

• Borsting Dennis Andre
• Mortensen Ivan Engmark
• Fuglsang Lars
• Christiansen Per Kjaer

Classifications

• B29C65/7802

  Positioning the parts to be joined, e.g. aligning, indexing or centring · CPC title

• F05B2280/6003

  Composites; e.g. fibre-reinforced · CPC title

• B29C70/86 Primary

  Incorporated in coherent impregnated reinforcing layers, {e.g. by winding} · CPC title

• B29C33/12

  with incorporated means for positioning inserts, e.g. labels {(positioning reinforcements B29C70/541)} · CPC title

• B29C2793/0027

  Cutting off · CPC title