Research On Lightweight For The Key Components Of Pump Truck Based On Topology Optimization

The faster large construction facilities are developing, the longer pump truck boom will be. Because of the extension of the boom, increasing the bending moment, the support structure need to be more strong. As a result of this, pump truck will be heavier and the overall size will be followed by larger. At the moment,for shortage of energy,society is advocating energy-saving and emission-reduction continuously. The laws and regulations of the state has strict regulations on the car weight, lightweight design of pump truck has become the focus of pump study.In the direction of lightweighting of pump truck’s key parts, this paper applies topology optimization technology to design the swival table, boom and connecting rod.In the pump truck swival table optimization, adding inertia relief method, we achieve the topological optimization design of swival table based on inertia relief. Finally we complete the new optimum structure, which meets the requirements of weight loss. The main research contents:(1) In order to determine the stress distribution and the optimal space, we establish finite element model on the swival table, concrete pump boom and connecting rod by static analysis.(2) A new idea of loading is applied to establish the swival table optimization model in multi-condition. The introduction of inertia relief, eliminating the stiffening effect of rigid constraints, results in better effect. Through the twice development programming of Tcl language, pump truck can be bulk-loading, simplifing the modeling process. In the topology optimization design, we introduct manufacturing constraints, such as the repeated pattern, with satisfactory results of truss structure of new style. After that,applying the combination of topography optimization and shape optimization to make research on the optimization of connecting rod.(3) It makes experiment plans to test if the new swival table structure is justified and verify the correctness of the simulation analysis.The research method has been applied to the actual product project, for example, the lightweight design on the 52 m and 56 m pump. And it can be expanded to the optimization of the parts in other types of pump truck, such as swival table, outriggers and so on.