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Turning method and tool for main shaft assembly of large-scale wind-driven generator

A technology for wind turbines and main shafts, which is applied to lifting devices, lifting frames, load hanging components, etc., can solve the problems of not meeting the problem of turning over of large-tonnage main shaft assemblies, and achieve the possibility of turning over, improving assembly efficiency, and assembling Quality guaranteed effect

Active Publication Date: 2020-12-25
CRRC WIND POWER(SHANDONG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a method and tool for turning over the main shaft assembly of a large-scale wind power generating set, which solves the problem of the existing plant conditions. Satisfies the overturning problem of the large-tonnage main shaft assembly, and realizes the possibility of subsequent large-scale wind turbine overturning

Method used

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  • Turning method and tool for main shaft assembly of large-scale wind-driven generator
  • Turning method and tool for main shaft assembly of large-scale wind-driven generator
  • Turning method and tool for main shaft assembly of large-scale wind-driven generator

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Embodiment 1

[0042] This embodiment fully verifies the correctness of the theoretical analysis by analyzing the force during the turning process of the spreader and verifying the theoretical analysis, thereby providing a method for turning over the main shaft assembly of a large-scale wind turbine to solve the problem of The existing workshop conditions do not meet the overturning problem of the large-tonnage spindle assembly.

[0043] Specifically, such as figure 1 As shown, the flipping process of this embodiment is:

[0044] Step (1) as figure 2 As shown, the small end spreader 2 is fixed to the small end of the main shaft through bolts, and the sling 4 of the small end spreader is hung on the main hook of the crown block.

[0045] Further, the small end spreader 2 is hoisted to the installation hole of the small end of the main shaft by a crown block, and after the holes are aligned, the small end spreader 2 is fixed on the main shaft assembly 1 with bolts.

[0046] Step (2) Lift t...

Embodiment 2

[0055] This embodiment provides a turning tool for the main shaft assembly of a large-scale wind power generating set, which includes a large-end sling 3, a small-end sling 2, and a hydraulic lifting trolley 5. The large-end sling 3 is used to lift the large end of the main shaft; the small-end sling Tool 2 is used for lifting the small end of the main shaft. The hydraulic lifting trolley 5 is used to push the big end spreader 3 to the bottom of the big end of the main shaft, and the installation of the big end spreader 3 is completed by adjusting the hydraulic lifting trolley 5 .

[0056] One end of the big end hanger 3 is detachably connected to the big end of the main shaft, for example bolted. The big-end spreader 3 includes a big-end lug and a sling 4 , the big-end lug includes a connection part and a suspension part, the connection part is used to connect the bearing housing lug of the main shaft assembly, and the suspension part is used to connect the sling 4 . Wherein...

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Abstract

The invention discloses a turning method and tool for a main shaft assembly of a large-scale wind-driven generator. The turning method comprises the following steps: fixing a small-end hoisting appliance with a main-shaft small end, and connecting the small-end hoisting appliance with an overhead crane main hook; hoisting the overhead crane main hook to set a distance from a main shaft to the ground; connecting a large-end hoisting appliance with a main-shaft large end, and connecting the large-end hoisting appliance with an overhead crane auxiliary hook; hoisting the overhead crane auxiliaryhook to ensure that the overhead crane auxiliary hook is stopped when the main shaft turns to the set angle; and dropping the overhead crane main hook until the main shaft assembly is in a horizontalstate. According to the method disclosed by the invention, the problem that turning of large-tonnage main shaft assemblies cannot be met under existing factory conditions is solved, and the possibility of subsequent turning of large-scale wind-driven generator sets is realized.

Description

technical field [0001] The invention relates to the technical field of large wind power generators, in particular to a method and tool for turning over a main shaft assembly of a large wind power generator. Background technique [0002] In the wind turbine, the main shaft assembly is the core component of the doubly-fed wind turbine, which plays the role of connecting the impeller and the gearbox and carries the torque transmission. In the production process, the main shaft needs to be erected first, and then the wind wheel lock plate, inner seal, bearing, bearing seat, bearing seat assembly, etc. are installed in sequence. After the installation is completed, the main shaft assembly needs to be laid flat before it can be assembled with the gearbox. [0003] The main shaft assembly is from erecting to laying flat. The existing method utilizes double trolley cranes and large and small end spreaders to complete the overturning. The small end spreaders are installed at the smal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C1/12B66C13/08B66F7/08B66F7/28
CPCB66C1/108B66C1/12B66C13/08B66F7/065B66F7/08B66F7/28Y02E10/72
Inventor 李全兰孟庆新席泰柱李洋
Owner CRRC WIND POWER(SHANDONG) CO LTD