The relationship between eccentric structure and super-lift device of all-terrain crane based on the overall stability
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DOI 10.1007/s12206-020-0513-9
Journal of Mechanical Science and Technology 34 (6) 2020 Original Article DOI 10.1007/s12206-020-0513-9 Keywords: · All-terrain crane · Overall stability · Eccentric structure · Super-lift device · Finite element analysis
Correspondence to: Yao Fenglin [email protected]
Citation: Fenglin, Y., Wenjun, M., Jie, Z., Guoshan, S., Yanqiang, B., Hui, L., Yaodong, C. (2020). The relationship between eccentric structure and super-lift device of all-terrain crane based on the overall stability. Journal of Mechanical Science and Technology 34 (6) (2020) 2365~2370. http://doi.org/10.1007/s12206-020-0513-9
Received December 26th, 2019 Revised
March 30th, 2020
Accepted April 1st, 2020 † Recommended by Editor Chongdu Cho
The relationship between eccentric structure and super-lift device of all-terrain crane based on the overall stability Yao Fenglin1, Meng Wenjun1, Zhao Jie2, Shi Guoshan1, Bai Yanqiang1, Li Hui1 and Cui Yaodong1 1
School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, Shanxi, 2 China, Department of Computer Engineering, Taiyuan University, Taiyuan, Shanxi, China
Abstract
When the large all-terrain crane operated under ultra-high hoisting height, the stability of boom system became the key factor of the lifting capacity. The installation of eccentric structure and super-lift device could help to improve the stability of boom system. In order to achieve the best effect of growth, it was important to study the relationship between eccentric structure and super-lift device. The eigenvalue buckling analysis and geometric nonlinear buckling analysis were carried out by ANSYS for the combined boom system of 500 t all-terrain crane with tower jib when lifting load, dead weight, offset load, wind load and lifting rope force were considered. And then the influence rule of the combined relationship between the strut length, opening angle, amplitude variation angle of the eccentric structure and the strut length, opening angle, amplitude variation angle of the super-lift device on the overall stability of combined boom system was analyzed to obtain the optimum parameter combination of eccentric structure and super-lift device, which provides reference for engineering practice.
1. Introduction With the development of construction of large-scale engineering projects worldwide, large lifting weight of crane is required, ultra-high lifting height and the large working radius are also to be satisfied. Therefore, the combination of the main arm and the fly jib is widely used [1, 2]. A variety of double link jib system are derived. Among them, the tower jib and super-lifting combined system is the most typical combined working condition. When the crane is working, the combined boom system is subjected to the coupling effect of self-weight, hoisting, eccentric load, wind load and hoisting rope force [3]. When the tower jib combination boom is long, owing to higher material strength, smaller structure section and larger slenderness ratio, the stability of the
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