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Process for fabricating wind-driven generator base

A technology of wind turbine and processing technology, applied in the field of mechanical processing, can solve the problems of easy deformation, failure to meet the design requirements of the machine base, poor processing accuracy, etc.

Inactive Publication Date: 2012-07-18
无锡圣贝尔机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the frame of the wind turbine is made of 6-20mm Q235 or Q 345C steel plate after being rolled into a circle, the two ends are welded with round flanges to form a structural part, the overall rigidity is poor, and it is easy to deform when clamping (large workpiece: Φ1000mm ×1300mm or more)
Therefore, there are problems such as low processing efficiency (more than 24 hours for each machine) and poor processing accuracy (coaxiality is about Φ0.10mm, and cylindricity is about 0.15mm for cylindricity Φ1000mm), which cannot meet the design requirements of the machine base.

Method used

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  • Process for fabricating wind-driven generator base
  • Process for fabricating wind-driven generator base
  • Process for fabricating wind-driven generator base

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The processing technique of wind power generator support of the present invention adopts following process steps:

[0039] 1. Milling foot process

[0040] 1. Frame: 1.5MW water-cooled wind turbine frame (cylindrical structure), after coiled with 6-20mm Q235 or Q 345C steel plate, round flanges are welded on both ends, and welded into a structural frame; blank size : 1700mm (length) × 920mm (width) × 1080mm (height); the blank size of the inner hole: Φ790mm, the center height of the blank: 456mm;

[0041] The inner hole of the water-cooled machine base is a cylinder rolled from steel plate, and round flanges are welded on both ends. The installation principle of the wind power generator is: install the end cover of the generator at both ends of the base, install the motor stator in the middle of the inner hole, install the windshield and the cooling fan at the tail. Because the diameters of the installed components are different, the machine base should be processed i...

Embodiment 2

[0075] Adopt the processing step of the processing technology of water-cooled wind-driven generator support described in embodiment one, can process 3MW air-cooled wind-driven generator support;

[0076] The frame of the 3MW air-cooled wind turbine is welded with 20mm-50mm Q235 or Q 345C steel plates into a box-shaped structure; the inside of the box-shaped structure is composed of various partitions, and there are cavities between the partitions. The components installed on the inner holes of each partition plate in the inner cavity are the same as the water-cooled machine base. According to the diameter size and installation position of each component, various inner hole sizes of each partition plate in the inner cavity are formed by processing.

[0077] 1. Dimensions of blank: 2120mm (length) × 1300mm (width) × 1285mm (height)

[0078] Blank center height: 638mm

[0079] 2. The rough size of the inner hole of each partition in the square box:

[0080] Inner hole of the f...

Embodiment 3

[0096] Adopt the processing steps of the processing technology of the water-cooled wind power generator base described in the first embodiment, after coiling with 6-20mm Q235 or Q 345C steel plate, round flanges are welded at both ends, and welded into a 2MW water-cooled cylindrical structure Type wind turbine frame; process 2MW water-cooled wind turbine frame according to the diameter size and installation position of each component.

[0097] 1. Dimensions: length 1650mm × width 1250mm × height 1345mm

[0098] 2. Inner hole blank size: Φ840mm

[0099] 3. The height of the blank center: 505mm

[0100] 4. Dimensions from milling foot plane to center height: 500 0 -0.5 mm

[0101] 5. Rough boring size:

[0102]

[0103] 6. Semi-fine boring size:

[0104]

[0105]

[0106] 7. Fine boring size:

[0107]

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Abstract

The invention relates to a mechanical process for fabricating a wind-driven generator base, belonging to the technical field of mechanical process. The fabrication process mainly comprises the steps of milling a footing; roughly boring internal step-shaped holes of the base, each step and the planes of two ends; finely boring internal holes of the base as well as each step and the planes of two ends; after the processing is finished, releasing tightening screws and clamp screws; and hoisting the base down onto a wooden frame. According to the fabrication process provided by the invention, the planes of two ends and each internal step-shaped hole are mechanically processed in a state of once clamping, thus the axiality of the internal step-shaped holes at each part on the base can be guaranteed, the processing time is reduced, the precision requirement in base design is met.

Description

technical field [0001] The invention relates to a mechanical processing technology of a wind power generator base, belonging to the technical field of mechanical processing. Background technique [0002] At present, the mechanical processing of the wind turbine frame generally adopts a vertical lathe or a floor boring and milling machine for machining in two clampings. Since the frame of the wind turbine is made of 6-20mm Q235 or Q 345C steel plate after being rolled into a circle, the two ends are welded with round flanges to form a structural part, the overall rigidity is poor, and it is easy to deform when clamping (large workpiece: Φ1000mm ×1300mm or more). Therefore, there are problems such as low processing efficiency (more than 24 hours for each machine) and poor processing accuracy (coaxiality is about Φ0.10mm, and cylindricity is about 0.15mm for cylindricity Φ1000mm), which cannot meet the design requirements of the machine base. . Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): B23P13/00B23C3/00B23B35/00
Inventor 周琪生
Owner 无锡圣贝尔机电有限公司
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