Optimum Design And Simulation Of Compressing Mechanisms Of Fully Sealed Compression Garbage Truck

Compressing mechanisms is the direct implement of compressed garbage truck, compressing and filling garbage. Because of the bad working conditions and harsh loading, mechanical properties of compression mechanisms directly affect the vehicle efficiency and reliability of the garbage truck. To do this, compression mechanisms was used as the research object in this thesis. Much research work was carried out, containing dynamical characteristics of compression mechanisms in work process, assuming of rigid body simulateing compression garbage model, parameters optimization design aiming at oil cylinder movement stability, finite element analysis of the whole work device considering of influence of partial Hinge pin-contact, and topology and size optimization design of core parts of compression institutions. The mian work fouced on the following points:(1) Multi-rigid-body dynamics model of compression mechanisms was established in ADAMS. Dynamical characteristics of compression mechanisms were analyzed in the worst condition.(2) Mathematical model of parameter optimization aiming at oil cylinder movement stability was established through kinematic analysis of compression mechanisms, and solved in genetic optimization toolbox of Matlab. Parameters optimization scheme was determined and verified for reliability, which provided reference basis for improvement of the compression mechanisms.(3) Compressed garbage load function of the typical working conditions was established through the analysis of load cases of the work device. Based on this, finite element analysis of the whole work device was conducted considering of influence of partial Hinge pin-contact. The overall stress and displacement distribution and stress concentration area were determined, which lay the foundation for the follow-up work optimization design of device structure.(4) The core parts of the compression mechanisms were optimized, using the topology and size double optimization strategy, on the basis of guaranteeing or improving the mechanical properties and considering manufacturing process and practicability. The design scheme of light weighting core parts of the compression mechanisms was proposed, and verified for reliability.