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Turning over spreader for wind turbine impeller assembly

A technology of wind turbines and spreaders, applied in the field of wind power, which can solve problems such as irregular hubs, difficult and difficult connections of spreaders, etc., and achieve the effects of convenient use and maintenance, flexible and convenient disassembly, and simple operation

Active Publication Date: 2016-05-18
JIANGSU GOLDWIND SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such a wheel hub is not big and not very heavy, it is difficult to set up a structure for the hanger to hold on it because the shroud is made of glass fiber reinforced plastic. , it also needs to be turned over 90 degrees to dock with the cabin
The shape of the hub is very irregular, and it is very difficult to connect with the spreader when it is installed in the shroud. It is impossible for the spreader in the prior art to be able to adapt to turning over after the hub is hoisted.

Method used

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  • Turning over spreader for wind turbine impeller assembly
  • Turning over spreader for wind turbine impeller assembly
  • Turning over spreader for wind turbine impeller assembly

Examples

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Embodiment Construction

[0025] As the impeller hub hoisted by the stand-up spreader provided by the present invention, the state of being transported to the site before hoisting is to be arranged on a support in a glass fiber reinforced plastic shroud, and the flange end face connected to the engine shaft of the nacelle is set downwards. The pitch bearing ends of the three blades are evenly arranged on the side of the hub of the impeller. Cooperating with the hanger provided by the present invention, a hoisting structure is arranged on the outer wall of the hub between the pitch bearing ends 3 of the two blades of the impeller hub. Specifically, the hoisting structure is an impeller hub lifting lug 19 , and pin shaft holes are arranged on the lifting lug 19 . On the wind deflector (not shown in the figure), two windows are opened at the corresponding lifting lug 19 and a pitch bearing end opposite to the lifting lug 19, for the hoisting sling to stretch into the wind deflector and hold the impeller h...

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Abstract

The invention provides a turning lifter for assembling an impeller of a wind generating set; the turning lifter comprises two scissor-shaped lifters; each scissor-shaped lifter comprises two rod pieces; the two rod pieces are crossed with each other, and are hinged through a hinged shaft; the rod pieces on one sides of the hinged shafts form scissor openings; the rod pieces on the other sides of the hinged shafts form scissor handles; holding structures are arranged at the ends of two supporting rods on one sides of the scissor openings, and are matched with the shapes and / or structures of corresponding places of wheel hubs of the impeller; telescopic devices are arranged between the two rod pieces on one sides of the scissor handles; fixed pieces of the telescopic devices are arranged on one of the rod pieces; the outer ends of telescopic pieces of the telescopic devices are fixed on the other one of the rod pieces; the telescopic devices are driven manually; unloading buckles are arranged on the rod pieces for connecting with slings which are connected with a crane. The turning lifter can implement the rabbit ear type impeller splicing; as the turning lifter is controlled by a manual mechanical system, the operation is simple, and the economy is good; the lifter is convenient for maintenance and use, and is flexible and convenient for disassembly.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a turn-over spreader for a rabbit-ear-type assembled impeller of a wind power generating set. Background technique [0002] The impeller of a wind turbine is mainly composed of a hub and three blades. There are many methods for hoisting the impeller to the tower in the prior art. This hoisting method is more difficult to hoist, because the impeller with three blades has a large rotating diameter. It is not easy to lift such a huge impeller or change its attitude in the air, especially on the deck or platform of a ship at sea. It is even more difficult. [0003] The applicant of the present invention has developed the impeller split hoisting technology, that is, the impeller is decomposed into two parts, the first part includes the nacelle, the hub and the rabbit ear assembly with two blades fixed thereon, and the second part is the third blade. In the assembly process of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C1/10B66C13/08
Inventor 俞雪梅石峻
Owner JIANGSU GOLDWIND SCI & TECH CO LTD
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