Design And Research On Main Beam Of Parameter Test Bench Lifting And Positioning Locking System

The rapid development of the national economy and the construction of national infrastructure is closely linked to rail transportation as an important part of the national infrastructure, which have a significant impact in promoting national economic development. As in recent years, moving standardization proposed EMU national rail transport in particular for standardization EMU proposed new performance requirements in order to promote innovative country. Bogie as an important component of EMU travel system is the most important parts of the decision EMU dynamic performance; kinetic performance parameter, including the vehicle through, comfort and driving safety are reflected directly through the bogie structure parameters. Bogie suspension characteristics of EMU is to determine dynamic performance of the most important parameters, so for bogie suspension characteristic parameter tests are type tests of the most important tests. The parameters measured bogie test stand for bogie test parameters indispensable, especially in the secondary suspension of the bogie Stiffness and more bogie test stand parameters measured during dynamic stiffness excitation integrity there are clear requirements.Since the latter part of the EMU bogie and vehicle suspension test increased, and respectively when the vehicle and bogie test parameters and master beam position on the motion platform requires different; this beam down to the different needs depending on the bogie position, and during vehicle testing needs to be the primary beam rose to the highest position of the vehicle to ensure that the position of the space; with the latter test frequency increases, the upward and downward adjustments more frequently the main beam, the main beam lift system to automate the transformation of the more urgent.This article relies on the basis of measured parameters bogie test rig platform, through the reconstruction beam assembly lifting system can be realized on the automatic lifting beam assembly; friction plate group also proposed locking system, and an air cylinder driven approach automates the locking system; the system will be presented to automate the transformation of integration, system replacement pilot project for future use high-frequency and high-frequency parameters of bogie test stand of creative possibilities.In this paper, the main beam of the automatic lifting system designed to lift a variety of programs, including programs and synchronous servo motors synchronous mechanical linkage program, and discuss the program synchronization, after analyzing the advantages and disadvantages of the final choice of synchronous servo motor program. This paper presents automatic locking system friction plate and friction plate cylinder drive compacted form groups based beams provide sufficient tightening torque and through theoretical calculations to determine the maximum weight locking system locking scheme.According to the main beam assembly and test requirements for the selected synchronous lifting program selection and strength check, in the form of mechanical coupling lifting system based on the simulation analysis, the synchronous motor vibration motion modal analysis, to determine the safety of the scheme on the basis of data and motion simulation analysis results of modal analysis;Based on the test function the main beam and the maximum reaction force needs, locking system has been pressing torque check, according to the specifications selected cylinder pressure sufficient output power cylinder model, the theoretical basis of calculation by friction area and the pressing force of the bolt determined on the security locking system.In this paper, the main beam down synchronized with the synchronization control locking system to study the use of Mitsubishi Control Products main beam modules synchronous motor solutions lifting control system, used Mitsubishi Q series PLC software and hardware design of servo system control parameters master beam down. The research of the servo system uses Mitsubishi Q Series Universal Q02UCPU, QD77MS2 type positioning module and the MR-J4 series of servo amplifiers and HG-JR series synchronous motors and other products to develop and write synchronous servo motor control program synchronous servo motor system ensure that the main beam is lifting both sides of the error within the allowable value.