Segmental lifting method for impeller of high-power wind driven generator

Abstract

The invention discloses a segmental lifting method for an impeller of a high-power wind driven generator, which is characterized in that after the installation of a tower and an engine room is qualified, a hub and three single vanes are respectively lifted in place and are abutted into one whole body in the air by utilizing a crane for lifting the tower and the engine room, a machine tool and a rope; a girder of a T-shaped shoulder pole beam is welded by adopting a seamless steel pipe with the specification of phi 219*10 mm and has a length of 6 m and a width of 2.5 m; and a reinforcing support is welded with the girder by adopting a seamless steel pipe with the specification of phi 89*6 mm. The segmental lifting method for the impeller of the high-power wind driven generator is carried out according to the steps: carrying out ground assembly on the hub, lifting the hub, lifting a first vane, rotating the impeller by 120 degrees by a hub jigger and mounting second and third vanes. The segmental lifting method has the advantages of reducing the construction land area, preventing the water loss and soil erosion, effectively controlling the construction quality, reducing the safety risk and saving the investment and the construction cost.

Description

technical field [0001] The invention relates to the technical field of installation of wind power generator equipment, in particular to a segmented hoisting method for a high-power wind power generator impeller, which is used for the installation of the high-power wind power generator impeller. Background technique [0002] At present, the overall hoisting method is mostly used for wind turbine impellers, that is, the three blades and the hub are combined into an overall hoisting of the impeller on the ground, and a main crane and an auxiliary crane are used to turn over 90° in the air, and the impeller is single-machined by the main crane. Hoisting in place and connecting with the engine room. [0003] The windward area of ​​the overall hoisting of the impeller is large, and the installation process is difficult to control. Turning over in the air as a whole may easily cause damage to the blades, and a hoisting machine with a larger hoisting capacity is required; for narrow...

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Problems solved by technology

[0003] The windward area of ​​the overall hoisting of the impeller is large, and the installation process is difficult to control. Turning over in the air as a whole may easily cause damage to the blades, and a hoisting machine with a larger hoisting capacity is required; for narrow hillsides and hilly areas where the construction site is limited, the construction is more difficult. Big

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