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cwq400 xing wei gan qi zhong ji
Pages: 42-45
Year: Issue:  11
Journal: Haisting and Conveying Machinery

Keyword:  derrick cranethree-point bearingsling balancingstructure;
Abstract: CWQ400-type derrick crane is a revolving crane for bridge installation with the currently largest tonnage in China,which can stand on three main trusses and erect for two nodes during travel through anchor tubes of stay cable on steel beam.To reach the crane quality required by the steel beam,large-scale components shall be made of high-strength steel;for installation of 3-truss steel beam,3-point bearing technology is adopted.The actual application shows that the crane is reliable and reasonable in weight optimization and bearing system design,suitable for installation of steel beam in similar high-speed railways.
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