Statics Analysis of a New Type of Wheeled Wind Crane

Abstract

Under the background of the goal of "carbon peak, carbon neutrality", China's wind power development gradually transfers from the three northern regions to the central and eastern parts of the south, wind power installed capacity continues to increase, wind turbine height and single capacity continue to improve, while facing complex geographical environments such as mountains, forest areas, fish ponds, farmland, the functional demand for wind turbine hoisting equipment is increasing day by day. Due to the backwardness of China's metal material manufacturing technology and large wind power crane detection technology, the fatigue life of wind power crane is unpredictable, often in dangerous working conditions and negative loads, resulting in boom fatigue damage, which has a significant impact on personnel safety and national and company economic losses. Today, the demand for wind power has increased greatly, and the wind motor has changed from the previous slow speed, small wind blades and light weight to the single machine capacity is getting larger and larger, the blades are getting longer and longer, the tower height is getting higher and higher, and the lifting parts are getting heavier and heavier. This has created the characteristics of high, large and heavy wind turbines today. Therefore, the traditional wind turbine hoisting equipment has been unable to meet the needs of wind power construction, such as the all-ground crane high cost, weak wind resistance; Crawler crane lifting weight and lifting height is insufficient, and the site required for installation and demolition is large; The traditional tower crane needs to be attached to the tower barrel, which has low disassembly efficiency and great influence on the tower barrel, which seriously restricts the rapid development of wind power construction. Therefore, it is urgent to develop wind power cranes that can better adapt to complex geographical environments, ultra-high towers, and large megawatt units, while reducing installation costs and improving the safety and efficiency of hoisting, it is necessary to carry out mechanical analysis of wind power crane equipment. In order to ensure the reliable operation of the wind power crane, improve the utilization rate, extend the service life of the equipment, prevent potential production safety hazards, and reduce equipment maintenance costs, it is necessary to master its static performance through theoretical analysis and calculation, in order to propose and implement the design optimization and improvement program and the later use and maintenance measures. Due to overload, cracks, fatigue and corrosion, various failures caused by wind power cranes may reduce or lose their pre-designed functions and roles. Therefore, it is necessary to deeply analyze the static performance of the crane, find the largest dangerous force parts, eliminate potential safety hazards, and ensure its safe, stable and reliable operation, to monitor such complex structural parts is not only time-consuming, and may not be able to truly detect the safety hazards. In order to solve these problems, ANSYS (finite element analysis software) is used to analyze the theoretical stress of the 3D structure model, and the theoretical dangerous stress position of the structure is solved. Provide strong data support for the design and development of wind power crane industry in the later stage