长轨运输车极小半径曲线运行安全性分析  

Operation Safety Analysis of Long Rail Transport Vehicle with Extremely Small Radius Curves

作　　者：申阳 陈琪 许广泰 熊新 熊雄 周明刚[1] SHEN Yang;CHEN Qi;XU Guang-tai;XIONG Xin;XIONG Xiong;ZHOU Ming-gang(School of Mechanical Engineering,Hubei University of Technology,Wuhan 430068,China;Hubei Srida Heavy Duty Engineering Machinery Co.,Ltd.,Xiangyang 441116,China;Wuhan Leaddo Measuring&Control Technology.,Ltd.,Wuhan 430070,China)

机构地区：[1]湖北工业大学机械工程学院,武汉430068 [2]湖北时瑞达重型工程机械有限公司,襄阳441116 [3]武汉利德测控技术有限公司,武汉430070

出　　处：《科学技术与工程》2024年第20期8707-8714,共8页Science Technology and Engineering

基　　金：湖北省重大项目(2022EHB022)。

摘　　要：长轨运输车运载长钢轨通过半径R为65 m的极小半径曲线段时,由于曲线半径极小和长钢轨通过曲线段时对车辆产生支反力的共同影响,车辆的运行安全性差。为确保所设计的长轨运输车能安全通过该曲线段进行轨道作业时,首先对长轨运输车的曲线通过能力进行理论分析,然后计算所运载的长钢轨对车辆产生的支反力,建立长轨运输车动力学仿真模型,计算长轨运输车空载、重载低速动态通过曲线段的运行安全性指标,并叠加支反力后依据《铁道特种车辆和轨行机械动力学性能评定及试验方法》(GB/T 17426—1998)进行安全性评定,最后通过实车试验验证理论计算和仿真分析。结果表明:所设计的长轨运输车有通过R65 m极小半径曲线段的能力,其重载工况动态通过该曲线段时的极限速度高于空载工况,且长轨运输车空载、重载以5~15 km/h速度动态通该曲线段时运行安全性能良好,具有一定的安全裕值,满足实际轨道作业的速度需要。Due to the combined effect of the extremely small radius of the track curve and the reaction forces exerted on the vehicle as the long rails pass through the curve section.The operation safety of long rail transport vehicles is poor when long rails are carried through an extremely small radius with a radius R of 65 m.In order to ensure the safe operation of the designed long rail transport vehicle during track operations on the curve section.First,a theoretical analysis of the curve passing performance of the long rail transport vehicle was presented.Then,the reaction force of the vehicle caused by the bending deformation of the long rail when it passed through the curve section was calculated.The dynamic simulation model of the long rail transport vehicle was established,and the operation safety indicators for a long rail transport vehicle during low-speed dynamic passage through a curve section,both with and without a load,were calculated.The safety evaluation was carried out according to Evaluation and Testing Methods for Dynamic Performance of Railway Special Vehicles and Track Machinery(GB/T 17426—1998)after superimposing the reaction force.Finally,the theoretical calculation and simulation analysis were verified by a real vehicle test.The results show that the designed long rail vehicle has the ability to pass through the curve section with an extremely small radius of R 65 m,and its limit speed under heavy load conditions is higher than that under no load conditions.Additionally,the long rail transport vehicle exhibits excellent safety performance while dynamically traversing the curve section at speeds ranging from 5 to 15 km/h,both with and without a load.It also maintains a sufficient safety margin,meeting the speed requirements for practical rail operations.

关 键 词：长轨运输车 长钢轨运输 极小半径曲线 支反力 运行安全性 

分 类 号：U273[机械工程—车辆工程]