Mechanical-hydraulic System Performance Analysis Of Excavation Organization Of A Screen Scarifier

Mechanical technology in field of Railway maintenance is developed faster and faster since the rapid development of the Chinese railway and its increase of carriage amount by railway. BS-550ballast shouder screen scarifier is a type of new screen machine for dig and cleaning ballast which is independent developed by Kunming railway large maintenance machinery co., LTD. Civil railway maintenance machinery nowadays is on the level of depending on technology introduction from aboard and empirical design because of the limitation of civil railway maintenance mechanical technology and technical block from aboard. Designing and researching technical methods now are too low in efficiency and too high in cost to fit the economy development and marketing competition. Instead of physical prototype experiment, Virtual Prototype Technology is of great meaning in shorting product developing cycle, lowering researching cost, improving design quality and product performance.Current situations of Screen scarifier for both civil and aboard, classify and working parameters of Screen scarifier and develop of virtual technology are analyzed firstly in this paper. A right digging structure of a BS-550ballast shouder cleaning machine is taken as researching object, analysis and discussion are done about if’dead point’issue occurs, performance of its mechanical structure and mechanical hydraulic coupled system, based on which, an appropriate precept is selected after comparing other four precepts.Three-dimensional models of the structure are modeled and assembled in UG software firstly; secondly, models are imported into ADAMS software to finish virtual prototype. The working requirements are met from the structure’s smooth work, no obvious break in loading condition and no’dead point’occurrence, which is reflected by the performance out of the dynamic analysis of mechanical structure. Thirdly, the hydraulic system is analyzed. Co-simulation between mechanical system and hydraulic system is done by software interface after hydraulic system model is simulated by AMEsim software then. Results of co-simulation and dynamic analysis from ADAMS are compared, which make accuracy of co-simulation modeling and co-simulation method believable. Evaluation of hydraulic system is also done. At last, combined the research with practical situation, four mechanical structures are proposed. Comparisons are done with the original precept, an optimized precept is brought out.In this paper, advanced three-dimensional modeling, virtual prototype technology and co-simulation technology are introduced to analyze and optimize the digging structure of ballast shouder cleaning machine. Predicting research is well reached. An effective new method to design and develop digging structure of ballast shouder cleaning machine or other similar structures is proposed in this paper, which is of guidance meaning and engineering appliance value.