Finite Element Analysis of Key Structures in Spider Cranes

In order to solve the problem of poor terrain adaptability of traditional cranes in the construction of transmission lines in mountainous areas, and to ensure the safe operation of light modular spider cranes in complex terrain, this study is modelled on spider cranes with a rated lifting capacity of 3 tons. According to the Crane Design Specification and the Crane Design Manual, the static finite element analysis of the core structure was carried out using UG and ANSYS Workbench software. Following the principle of balancing load-bearing accuracy and calculation efficiency, the upper and lower structures of the spider crane are simplified in layers. Subsequently, the reaction force, displacement and stress characteristics of the core structure were analysed under the condition of a rated load of 3 tons and the minimum working radius. The research results show that the strength and rigidity of the core structure of the spider crane meet the standard requirements to ensure that it can operate safely in mountainous environments.