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Hydraulic lifting machine from the Road jobs cylinder Synchronous System

Author: ShiHuiYu
Tutor: LiuBo
School: Central South University
Course: Mechanical and Electronic Engineering
Keywords: From the Road Synchronization system Power Bond Graph Synchronization valve Simulink simulation
CLC: U215.6
Type: Master's thesis
Year: 2010
Downloads: 27
Quote: 0
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Abstract


Hydraulic lifting machine used in railway construction and railway engineering machinery , professional equipment maintenance operations , for the completion of the Rail row lifting transfer operations . Track lifting cylinder Synchronous is a key link to ensure the safety of the construction , improve construction efficiency . In this paper, DYQ-250 Hydraulic Road study on domestic and foreign machine Hydraulic Road development status and technical characteristics , for domestic lifting machine synchronization accuracy and control performance deficiencies , adapt to different control accuracy of hydraulic Road machine cylinder Synchronous system design . 1 , this paper from the Road on the hydraulic conditions from the Road job analysis to identify the main factors that influence from the Road track lifting process synchronization accuracy and analysis application synchronization valve regulated , load sensing and pressure compensation and electrical of three synchronous system of proportional control to achieve the synchronization control factors, work characteristics affect the accuracy control focuses on three ways in ballasted track the intelligent lifting machine and precision from the Road synchronous control system design application rationality ; 2 , power bond graph method to establish synchronization VRLA -cylinder synchronous system , load sensing cylinder Synchronous systems , and electro-hydraulic proportional double cylinder synchronous system model , and derive the equation of state of the system , thus clear from the Road job process synchronization accuracy control variable relations ; 3 to power bond graph model based on MATLAB-Simulink simulation platform cylinder Synchronous simulation block diagram of the system model and simulation analysis , to further clarify the increase influencing factors and laws of the the track lifting operations synchronization accuracy , and comparative analysis of the three systems under the same conditions can achieve synchronization accuracy for the rational design of the foundation , and then design a synchronous control ballasted track intelligent machine from the Road systems. Hydraulic lifting machine to DYQ-250 as experimental subjects, from the Road synchronization valve regulated cylinder Synchronous system experiments , experimental results show that the system from the ballasted track Road conditions cylinder Synchronous effective rationality and system design .

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CLC: > Transportation > Rail transport > Railway Line Project > Line construction > Construction equipment and construction mechanization
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