Turning over spreader for wind turbine impeller assembly

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...

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.

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