Lightweight Design And Research For The Trolley Frame Of Overhead Traveling Crane

Lightweight technology is comprehensive benefit of technology which refers to optimizethe structure, optimize materials, optimize processing of machinery parts and whole machinein order to reducing weight,improving performance and conserving energy, reducingemissions, saving cost and so on. Overhead crane in our country mostly have too much of asafety factor, heavy structure, which lead to material waste and construction cost increase.Studying the32/160t overhead crane trolley frame, the parameterized model of trolleyframe is established, by analysing the trolley frame with modal analysis and static mechanicsanalysis, the calculation results show the feasibility and necessity of lightweight trolley frame.Then takes topology optimization on the trolley frame structure, based on the results of thefuzzy topological structure, performing the follow-up optimization design in size and shape.Eventually get the lightweight model of the trolley frame.Introducing trolley frame parameterized system, describe the components and maincorresponding dimensions numerical of parametric mode generated in detail. Describeestablished finite element model of trolley frame from the unit, the choice of material to gridafter simplification of model. In following study modal analysis and mechanical analysis oftrolley frame makes full use of Ansys finite element analysis software. From global to local,compare the whole and the parts mechanics performance of the trolley frame in order toopting a more convincing way.Using the homogenization method on reel beams and composite beams, makes the topology optimization with flexibility as optimize target, the volume as constraint conditions.Discuss the application problems of topology optimization design, from the basic model,optimization of regional selection, optimization of process control to optimization analysis.Finally on the basis result of the fuzzy topological structure, consider the design requirementssuch as processing, assembly relations, take size and shape optimization design on the trolleyframe, at last got the lightweight model, and checking the strength, stiffness stability infurther, achieve loss4.1t weight, which accounts for20.6%of the original model.Results show that weight loss car not only reaches the expected requirement, but also itssafety performance, strength and stiffness adapting to the working environment is better,realizing the topology optimization on crane trolley frame structure in the process oflightweight design.