Research On Computer Aided Crane Selection And Collision Detection

Crane hoisting a wide range of applications in various fields, and plays an important role in national economic construction. With the continuous development of the crane hoisting industry, crane hoisting gradually large, heavy-duty, hoisting environment becomes complicated. As these changes of crane hoisting safety problem has become the hoisting process is one of the important considerations. Therefore, in order to solve the potential safety problems in the process of hoisting,In this paper, crane truck selection, crane modeling and simulation, collision detection in the virtual assembly three aspects are studied, And simulation experiment was carried out by three kinds of actual situation. In this paper, the research content is as follows:(1) Truck crane selection research. Research and Analysis of truck crane technology parameters?Crane hoisting technological process and truck crane hoisting process basic operation, for the selection of the crane and hoisting simulation to lay a good foundation. By analyzing the factors that influence the selection of truck cranes, proposed lifting performance calculator, crane jib and hoisting objects distance calculation complete truck crane selection.(2) Based on Webots crane modeling and simulation. Study Webots simulation software in a virtual three-dimensional scene hoisting built, the node structure and Crane main attribute parameters in Webots simulation environment. According to the results of modeling of truck crane virtual assembly complex scene as well as to the crane structure design, the complete crane in the scene tree modeling agencies. Design simulation crane hoisting motion control program.(3) Hoisting virtual collision detection algorithm. Analysis collision detection algorithm completeness, accuracy, timeliness, and combine truck crane hoisting virtual simulation features. Proposed based on AABB bounding box and bounding box tree method for hoisting virtual collision detection algorithm. First, the bounding box of the selection, Then, the design and construction to the truck crane bounding box tree, Finally, by depth-first traversal methods of hierarchical bounding box intersection test, complete crane collision detection algorithm.(4) Collision detection algorithm is implemented in the simulation system. Virtual assembly simulation system is introduced in this paper, and relationships among and between modules will be described. By way of showing text screenshot crane model, lifting scene model, collision detection model. In the three typical hoisting environment to realize 3D simulation hoisting simulation. The proposed algorithm is verified in the Webots simulation in virtual assembly can quickly and efficiently develop lifting scheme, the auxiliary construction personnel successfully complete hoisting operation, reduce the operation risk in the process of hoisting.