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Technique for processing circular ring box type beam of lifting tool

A hoisting tool and processing technology technology, which is applied in the manufacturing technology field of wind turbine hoisting tools, can solve the problems of cost increase, construction period delay, low efficiency, etc., and achieve reduction of machining cost, simple and effective control, and reduction of welding workload Effect

Active Publication Date: 2010-04-14
ZHEJIANG DADI STEEL STRUCTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Large-scale mechanical processing machines are also involved in the manufacturing process. There is no similar experience to refer to. If it is carried out

Method used

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  • Technique for processing circular ring box type beam of lifting tool
  • Technique for processing circular ring box type beam of lifting tool
  • Technique for processing circular ring box type beam of lifting tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: refer to Figure 1~3 . The ring box girder processing technology for hoisting tools, the ring box girder is divided into two semi-ring box girders 13, and the semi-ring box girder 13 includes two webs 2, an inner partition 3, an upper The wing plate 4, the lower wing plate 5 and the joint plate 6 are formed, and the making of the semicircular box girder 13 comprises the following steps:

[0023] a. First, the two webs 2, the inner partition 3, the upper wing 4 and the lower wing 5 are blanked respectively, and the abdominal pole 2 is blanked in straight strips, and then arc-shaped processing is performed according to the radian requirements;

[0024] b. Build an assembled tire mold on the steel platform, assemble the upper wing plate 4, two webs 2 and inner partitions 3 on the assembled tire mold, and the inner partitions 3 are evenly distributed on the upper wing 4 and two webs 2 In the rectangular groove formed, and the inner partition 3 is perpendicul...

Embodiment 2

[0029] Embodiment 2: refer to Figure 1~3 . After the two semicircular box girders 13 are assembled and welded, the following processing steps are also included:

[0030] a. On the milling and boring machine, the joint plates 4 at the two ends of the two semi-circular box beams 13 are milled out at one time and 7;

[0031] b. Connect the joint plates 6 by bolts, thereby connecting two semicircular box girders 13 to form a circular box girder;

[0032] c, the inner circle 14 of the upper wing plate 4 of the car ring box beam 13, and then the upper side flange plane 1 of the upper wing plate 4 protruding inwardly;

[0033] d. Use the numerical control system of the lathe to draw the center line of the hole position required by the design on the flange plane 1, and point out the equal points according to the center line of the hole position;

[0034] e. Drill holes at the equal points with an ordinary drill press.

Embodiment 3

[0035] Embodiment 3: refer to Figure 1~3 . The specific production of the ring box girder of the hoisting tool also includes: the blanking of the two webs 2, a 35-degree bevel needs to be made, and the bevel should be as uniform as possible, and the single side should be 2mm smaller to ensure that the welding bevel is uniform during assembly. , The upper wing plate 4, the lower wing plate 5 and the web plate 2 have been derusted as a single piece, except that no anti-corrosion is carried out within the range of 50mm of the welding groove, and the others are painted with shop primer.

[0036] Build and assemble the tire mold on the steel platform, first assemble the upper flange 4, two webs 2 and the inner partition 3 on the tire mold, and weld the fillet weld between the inner partition 3 and the upper flange 4 in turn. Seam 11, then vertical welds 9 and 10, and finally flat weld 12, measure the welding deformation at any time during welding, adjust the welding sequence in t...

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Abstract

The invention relates to a technique for making a circular ring box type beam of an aerogenerator set lifting tool, in particular to a technique for processing a circular ring box type beam of a lifting tool. The circular ring box type beam is divided into two semicircular ring box type beams, and each semicircular ring box type beam comprises two web plates, an internal partition plate, an upper wing plate, a lower wing plate and a seam-butting plate. The semicircular ring box type beam is processed by the steps of assembling and welding the two web plates, the internal partition plate, the upper wing plate, the lower wing plate and the seam-butting plate, and the like. The invention simply and effectively controls the welding deformation, reduces the machining cost and the work load for assembly welding on site and completes the assembly welding task with high efficiency and quality.

Description

technical field [0001] The invention relates to a manufacturing process of a hoisting tool for a wind power generating set, in particular to a manufacturing process of a ring box girder of the hoisting tool. Background technique [0002] This product is used for the hoisting tool of the first 3MW wind power generating set in China. This hoisting tool is the first in China. It is a special-shaped steel structure with high load, large components and complex structure. Large-scale mechanical processing machines are also involved in the manufacturing process. There is no similar experience to refer to. If it is carried out according to the general steel structure process idea, the construction period will be delayed, the efficiency will be low, and the cost will increase significantly. All the welds of the hoisting tool ring box girder are first-class welds (except for the internal stiffener). The most direct consequence caused by a large number of first-class welds is large wel...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 郭振亮
Owner ZHEJIANG DADI STEEL STRUCTURE
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