Application Of Composite Materials In Excavator Cab ROPS

Due to the complicated working environment,the bad road conditions,and the stability of the whole vehicle during the load-bearing operation,the excavators often have rollover accidents.Because of his own quality,the fatal rate of damage to the driver during rollover is extremely high.The Rollover Protective Device(ROPS)is a safety device that is installed outside the cab of an engineering vehicle to reduce the likelihood of a driver being crushed while overturning.The quality of ROPS performance is directly related to the safety of the driver.Modern construction has higher and higher requirements for construction safety.How to improve the cab ROPS structure and better protect the driver's personal safety has become the focus of research at home and abroad.For the ROPS structure of the hydraulic excavator cab of a certain type of research object.First,use PRO/E to build a three-dimensional model of the cab ROPS and properly simplify it.Second,Import into Hypermesh for pre-processing and draw a grid.Next using ABAQUS to simulate and analyze the established ROPS finite element model of the cab and test verification.According to the simulation analysis results and experimental results,an optimal design scheme for improving the performance of ROPS is proposed.The ROPS structure of the excavator cab needs to be sufficiently deformed while maintaining strength to absorb impact energy,make it meet the requirements of international standards.The composite material has the advantages of high specific strength,strong fracture resistance and small plastic deformation.It can effectively adjust the deformation performance of the cab steel structure.It can better protect the driver's personal safety.In addition,the composite material also has a certain degree of corrosion resistance,which can effectively improve the corrosion resistance of the excavator cab.This paper takes the ROPS structure of the cab of a certain type of hydraulic excavator as the research object,and combined with nonlinear finite element theory.Study the impact of the thickness of the cab pillar,whether the composite is attached,the thickness of the composite,and the layup angle of the composite on the result of finite element simulation.Perform simulation analysis of ROPS according to standard requirements.Simulation analysis of the above different influencing factors,it can get simulation results for different scenarios.And comparative analysis with the original cab ROPS.The results show that the attachment of composite materials can improve the safety of the cab.The research results are applicable to all types of ROPS structures,and have good research value for improving the safety performance of the cab and the weight reduction of the whole machine.