Mechanical Hydraulic Coupling Co-simulation Research On Luffing System Of Railway Rescue Crane

With the continuously improvement of economy level and technology ability,railway transport in China obtains great progress, and railway rescue crane is appliedmore and more widely. According to the actual situation that railway accident rescueenvironment is complex, railway rescue crane can undertake specific work in orderto complete the rescue task, ensure the railway traffic access and promote thescientific development of railway transport.The luffing system of railway rescue crane mainly completes boom lifting work,it bears self-gravity, object gravity and wind load at the same time in service, itsperformance decides the working stability of the whole machine to a certain extent.Therefore, the research of railway rescue crane luffing system performance hascertain practical significance. This paper takes the luffing system of1700t·m railwayrescue crane as the research object, conducts mechanical hydraulic couplingco-simulation based on ADAMS and AMESim, combined with multi body dynamicscharacteristics of the luffing mechanism, analyzes dynamic and static performance ofthe luffing hydraulic system, provides reference for the design and research on wholehydraulic system of1700t·m railway rescue crane, lays the foundation for the wholemachine manufacturing.Based on computer simulation platform, selecting hydraulic system componentsand formulating hydraulic system scheme of railway rescue crane adoptinghydraulic simulation technology, there is no need to build the real prototype system,that the digital simulation of the new hydraulic system in different working conditions can be carried out, the dynamic and static performance of the newhydraulic system can be fully understood, and the unreasonable scheme can be madetimely improvement. Then a successful design is achieved. This method not onlyshortens the development cycle, but also improves the production efficiency andeconomic benefit. Combined with the principle diagram of1700t·m railway rescuecrane luffing hydraulic system, the working principle of the system is analyzed, themechanical hydraulic coupling mathematical model of1700t·m railway rescue craneis built based on power bond graph modeling theory. On the basis of1700t·m railwayrescue crane luffing hydraulic system parameters, the hydraulic system simulationmodel is established using AMESim(Advanced Modeling Environment forperforming Simulation of engineering systems). According to the actual structure of1700t·m railway rescue crane luffing system, the model of parts is established andassembled using3D modeling software UG. The3D model is imported into multibody dynamics simulation software ADAMS through the corresponding interface.Then the constraint and load are added. At last the virtual prototype simulation modelis built. The virtual prototype simulation model is imported into AMESim throughthe corresponding interface, mechanical hydraulic coupling co-simulation isconducted, dynamic and static performance of1700t·m railway rescue crane luffingsystem in both of no-load and load condition. The factors that affecting the luffingsystem performance can be concluded after comparing the differences between thetwo conditions. Then the reference for the improvement of the design of the actualsystem is provided.