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Pre-arching manufacturing method of large-tonnage heavy-duty solid-belly crane beams

A technology of crane girder and solid-web type, which is applied in the field of pre-arching manufacturing of large-tonnage heavy-duty solid-web crane girders. Saving investment and good economic benefits

Active Publication Date: 2021-09-03
五矿二十三冶建设集团第二工程有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, a series of high difficulties such as oversized and overweight crane girder components, high manufacturing precision requirements, and high welding quality will directly affect the normal production and operation in the future.
If there are many quality problems such as the deformation of the crane beam and the downward deflection, the production will be affected, resulting in unnecessary losses caused by the suspension of work and production.

Method used

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  • Pre-arching manufacturing method of large-tonnage heavy-duty solid-belly crane beams
  • Pre-arching manufacturing method of large-tonnage heavy-duty solid-belly crane beams
  • Pre-arching manufacturing method of large-tonnage heavy-duty solid-belly crane beams

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] see Figure 1 ~ Figure 4, the pre-arching manufacturing method of the large-tonnage heavy-duty solid-web crane girder includes the following steps:

[0045] Step 1, drawing review and calculation of sizing: according to the design and construction drawing of the crane girder, carry out detailed drawing conversion, count the type and number of crane girders, and carry out double-sizing steel plates; the purpose of using double-sizing is to reduce the num...

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Abstract

The present invention relates to a large-tonnage heavy-duty solid-belly crane beam pre-arching manufacturing method, which includes step 1, plan review, calculation and fixed length; step 2, lofting steel plate spring line; step 3, numerical control cutting and blanking; step 4, slope The mouth is cleaned and ground; step five, H-shaped steel group assembly; step six, welding resistance stiffening plate; step seven, anti-corrosion coating. The present invention adopts a manufacturing method combining pre-arching, a special assembly platform, a welding mold, and a reasonable welding sequence. At the same time, attention is paid to controlling welding deformation and welding quality to ensure that the overall quality reduces the occurrence of deflection, which can shorten the construction period. Follow-up assignments provide more assignment time.

Description

technical field [0001] The invention relates to the technical field of crane girder production, in particular to a pre-arching manufacturing method for large-tonnage heavy-duty solid-web crane girders, which is suitable for welding heavy-duty and extra-heavy solid-web crane girders and solid-web roof girders in large-scale iron and steel enterprises and heavy industries Manufactured from H-shaped steel. Background technique [0002] With the development of the global economy, metallurgical industrial engineering has once again "come back". The metallurgical system is "famous" for its oversized and overweight equipment and components. In addition, the metallurgical industry operates day and night, and the frequency of use is high. Crane beams are not only To bear static load and also to bear dynamic load, the general crane girder is above heavy class. Therefore, a series of high difficulties such as oversized and overweight crane girder components, high manufacturing precisi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B66C6/00
CPCB23P15/00B66C6/00
Inventor 王志鹏沈俊姣席林李鹏龙春梅
Owner 五矿二十三冶建设集团第二工程有限公司
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