The Hydraulic System Research And Development Of The Wheels Automatic Press-fit Machine

The wheels press-fit machine is used mainly for the train wheels press-fit,can also be used for all types of vans wheels on the press-fit.Presently the manufacturers producing the wheels press-fit machine is relatively small,and the press-fit accuracy is not enough,the press-fit machine is developed mainly by enterprises and research institutes jointly.The wheels press-fit machine is mainly made up of the press-fit bodys,deputy press-fit bodies,detection system,pressure-displacement curve automatic recording system,electrical system,hydraulic transmission and control system,etc.In these systems,the hydraulic transmission and control system is equivalent to the central nervous system of the press-fit machine.The smooth accuracy and stability of the hydraulic transmission determines the quality of machine performance.The issure synthesizes the press-fit machine control system development level and the research and development status quo of fault diagnosis of hydraulic equipment,in-depth analysis of their study,based on the prevailing fault phenomena and hydraulic control system design defects of traditional press-fit machine,has launched the work about"The Hydraulic System Research And Development Of The Wheels Automatic Press-fit Machine".Through analysis on the existing hydraulic system design defect,failure phenomenon and the specific workmanship process,depending on a simplified design,energy-saving design and other modern design methods,had designed the pressure control loop and the speed control loop,and through electrical control technology with a combination of hydraulic technology,had realized the industrial automation of the press-fit machine.The whole press-fit process is a more coordinated,flexible,reliable,a higher press-fit accuracy,providing a reliable protection for speed of the train and improving the economic efficiency of enterprises.This topic describes the characteristics of SIMULINK software package,and to the press-fit workmanship process,using transfer function method set up a mathematical model of hydraulic system,the simulation model,described in detail how to make use of SIMULINK for simulation of hydraulic system dynamic characteristics.At the same time,discussed the main factors impacting hydraulic system dynamic characteristics.The hydraulic system dynamic simulation results demonstrate that MATLAB can provide system stability,fast response and steady-state accuracy of status information,etc.It is convenient to our design .