Structure Analysis Of Macroscale Wire-Driven Parallel Manipulator Gantry Crane Robot

Ship-building gantry crane is one of the most essential equipment for shipping manufacturing. With the development of ship-building, for shortening producing circle, generally, the weight of the subsection needs to be increased, which makes the crane become macro-scaled. At the same time, it needs a higher installing agility. In this paper, based on the exist crane, we give a new design precept, which can produce a higher flexibility and a bigger capability, and research for the feasibility of the new structure is also given.In this paper, we adopt finite element method to give mechanics analysis to the new ship-building gantry crane structure. And based on this analysis data, we can see about the feasibility for the new structure. In the beginning, the finite element method, as well as its application in gantry crane design has been researched, and the basic formula of the 3-D beam finite element theory can be precisely deducted. Subsequently, we build the finite element model by holistic modeling principle and issue the final analysis result. In addition, for the sake of a much more practical data, we have considered the environment, in which the crane works. And integrated the information in the literature, the accurate loading spot can be decided. Finally, we have processed a series mechanical simulation by using ANSYS to the model of the new structure, such as static analysis, mode analysis, and transient analysis. Based on the simulation result, the intension and stiffness can be reflected and checked up. At last, fracture mechanics method is used to analysis the fatigue life of the main beam.ANSYS is the most famous integrated CAE software in the world. Its powerful function is sufficient enough to build and analyze the complex structure model, including the Ship-building gantry crane. However, some pre-digestion in mode building process can not be avoided. So it must lead to produce some partly illogical data. Even though the situation is like this, we still can see data track which is shown by the simulation result is generally right. And the data can be considered as a correct reflection for the situation of the crane. In conclusion, the research harvest in this paper can give an accurate reference for the future development of Ship-building gantry crane.