Analysis And Studies On The Structure Of The Liftboom On Large-Tonnage And Double-Revolving Railway Crane

This paper employs FEA (Finite Element Analysis) software ANSYS to analyze and research on the structure of the liftboom on one new railway crane -large-tonnage and double-revolving railway crane. And analysising some picture of the structure of the liftboom of German's railway crane, this paper gives one new structure of the liftboom with octagon section. Then the structure is analyzed and adjusted, finally one new structure is put forword. It's proved that the new structure is better than the structure imitating German's company.First this paper introduces the status quo and development orientation, and then introduces some correlative knowledge, e.g. elasticity mechanics theory and FEA theory. Finally, the software ANSYS is introduced in brief. This paper analyzes and studies the structure of liftboom of the large-tonnage and double-revolving railway crane, including the liftboom's capability influence casued by different sections, putting forward a imitation German's company,modeling separately three liftbooms with octagon section, also loading, restricting, solving one by one. Regaring the imitation German's company model, analyzing five dangerous operating modes ,modifying the model gradually in order to make the model meet the intensity and stiffness requirements. This paper also analyzes the traditional liftboom with hexagon section ,through the comparing ,the liftboom's capability of octagon section is better than hexagon section.In the end of the paper, Analyzing the three liftbooms of railway crane -large-tonnage and double-revolving as an whole., adopting the technology of nodes freedom coupling to simulate relative slippage between liftboom and slide. The result of analysis which considered the three liftbooms as an whole is almost equal to the result of analysis which considered the three liftbooms separately.this also validates the reliability of separate analysis from a side view. Therefore, the paper provides some references and suggests when the structure of large-tonnage and double-revolving railway crane is designed further or modified to make the future design and analysis more reliable, accurate and economic.