Manufacturing technology of tower crane jib pulling plate

A processing technology and boom technology, which is applied in the field of processing technology of the tower crane boom pull plate, can solve the problems of labor cost, time cost, and inability to completely avoid weld defects, so as to avoid weld defects and reduce Time cost and labor cost, the effect of ensuring safety and reliability

Active Publication Date: 2014-06-25
XUZHOU CONSTR MACHINERY
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  • Abstract
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Problems solved by technology

In the assembly welding process, due to the existence of human factors, weld de

Method used

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with embodiment.

[0017] The processing process of the tower crane jib pull plate is as follows:

[0018] (1) Cutting: Use a cutting machine to cut out the outline of the boom pull plate, the thickness is t=4-25mm, and the cutting speed is 50-8000mm / min; after the processing is completed, use the cutting machine to continue processing the front connection hole , process the inner hole size to φ35 mm, plate thickness t4-10mm; after the processing is completed, use the cutting machine to continue processing the subsequent connection hole, process the inner hole size φ50 mm, plate thickness t4-10mm;

[0019] 2) Leveling: use a leveling machine to level the front and rear connecting holes of the jib pull plate after cutting, the leveling speed is 10-14m / min, and the number of work rolls of the leveling machine is 10-12 , the diameter is φ210mm, and the roller spacing is 200-240mm;

[0020] 3) Boring and...

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Abstract

The invention discloses a manufacturing technology of a tower crane jib pulling plate and belongs to the technical field of the manufacturing technology of tower crane equipment. The jib pulling plate is directly manufactured into a rolled plate through the manufacturing technology including the steps of 1), blanking; 2), leveling; 3), boring and milling, 4), surface treatment; 5), paint spraying, 6), storage and the like. By the manufacturing technology, the jib pulling plate can be completed in blanking by directly utilizing high-strength steel plates through plasma cutting and the like, and the periphery of the pulling plate and pin shaft holes are subjected to fine treatment. Positioning accuracy of the pin shaft holes is guaranteed by an integral novel jib pulling plate structure, time and labor costs for tooling tailor-welding are reduced, weld defects can be completely avoided, and safety and reliability of connection in use are ensured.

Description

technical field [0001] The invention relates to a processing technology of a lifting arm drawing plate of a tower crane, and belongs to the technical field of tower crane equipment processing technology. Background technique [0002] The jib tie rod structure of the existing tower crane is assembled and welded by the round steel and the lug plate. During the production and processing process, the round steel and the lug plate need to be blanked separately, and then tailor-welded. Due to the existence of tailor welding, certain tooling equipment is required to ensure the process accuracy. In the assembly welding process, due to the existence of human factors, weld defects cannot be completely avoided. Labor costs and time costs are relatively high. Contents of the invention [0003] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a processing technology for the lifting plate of the tower crane boom, which avoids the welding...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00B66C23/64
Inventor 王建军米成宏刘振周瑜朱斌李海峰
Owner XUZHOU CONSTR MACHINERY
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