Performance Analysis And Experimental Research Of Hoisting Piggyback Transporter

Road transportation has the advantages of flexibility,simplicity and convenience,and can realize "door-to-door" service.Railway transportation has the advantages of strong transportation capacity,low cost,small pollution,high safety performance and not easy to be affected by environmental factors.Based on the problems of high logistics transportation cost,low efficiency,high energy consumption and difficult "door-to-door" service in China,the National Development and Reform Commission has put forward the notice of "carrying out multimodal transport project".Carrying out multimodal transport is conducive to integrating the advantages of public and railway transportation,optimizing the transportation structure,effectively improving the quality and level of comprehensive transportation services,and promoting the development of modern logistics.Piggyback transportation is one of the main modes of highway and rail combined transportation.It is a road freight car loaded with cargo,which is driven or hoisted to a special railway vehicle(piggyback)at the station of origin to realizes long distance transportation.After arriving at the destination station,the freight car drives off or hoists off the piggyback and travels to the final destination.This method can effectively combine the advantages of road and rail transportation,broaden the business scope of railway freight transportation,effectively reduce logistics transportation costs,and improve transportation efficiency and service quality.The STX3 hoisting Piggyback Transporter vehicle is a new-type road-rail intermodal transporter that combines the advantages of rail transportation and road transportation,which is of great significance to the development of the transportation industry.In this paper,the STX3 hoisting Piggyback Transporter vehicle is taken as the research object.Based on the finite element method theory,the modal,stiffness and static strength of the piggyback vehicle body are calculated and analyzed by using Hyper Mesh and Ansys software.By establishing a vehicle multi-body dynamic model and a precise analysis of the dynamic model,the vehicle system’s dynamic performance is simulated and compared with experimental data.The details are as follows:(1)Briefly introduces the development and research status of piggyback transport,introduces the structural characteristics of STX3 hoisting Piggyback Transporter,and uses Hyper Mesh software to build a finite element model of STX3 car body.(2)According to the modal and stability analysis principle,the modal and stability analysis is performed on the car body structure to obtain the volatile parts,natural frequency and mode shape of the car body structure.The results show that the modal and stability of the car body meet the design requirements.(3)According to the requirements of TB/T1335-1996 "Code for strength design and test evaluation of railway rolling stock"(hereinafter referred to as "TB/T1335-1996")and "Technical requirements for design of STX3 wagon",the 12 working conditions of static strength analysis are determined,and the calculation is completed by using ANSYS software.And the test results are compared with the simulation results,they have good consistency.(4)The multi-rigid body,rigid-flexible coupled dynamics model of the piggyback transporter was established by using Simpack software,and the precise finite element dynamics model of the piggyback transporter was established by using the professional software for random vibration analysis of piggyback traffic vehicle(PRAP).According to GB/T5599-1985 "Railway Vehicle-Specification for evaluation the dynamics performance and accreditation test ",the dynamic performance of the STX3 hoisting Piggyback Transporter under empty,semi-trailer,and container conditions was simulated and compared with experimental data.The results show that the three sets of data have a certain consistency,which verifies that the calculation results of the professional software for random vibration analysis of piggyback traffic vehicle have certain accuracy and reliability.