基于PLC的插销式液压升降台控制系统设计与研究

Design and Research of Plug-in Hydraulic Lift Control System with PLC

液压升降平台具有升降平稳可靠、调速范围大的特点,作为起重、装卸特殊设备,广泛应用于工业生产起重、运输中。基于液压系统工作原理,设计插销式液压升降平台控制系统,实现手动单步及自动控制两种控制方式。插销式液压升降平台利用可编程逻辑控制器(PLC)建立自动控制流程,采用TIA Portal软件编写平台控制程序,绘制自动顺序控制功能图。四个主液压缸通过PID指令进行控制,采用调节电液比例调速阀实现工作同步。该液压升降平台的应用提高了系统的安全性和可靠性,为其他升降平台的设计研究提供了指导。

Hydraulic lifting platform has the characteristics of stable and reliable lifting and large speed range.As a special lifting and handling equipment,it is widely used in industrial production lifting and transportation.Based on the working principle of hydraulic system,the control system of plug-in hydraulic lifting platform is designed to realize two control modes:manual one-step control and automatic control.Plug-in hydraulic lifting platform uses programmable logic controller(PLC)to establish the automatic control flow,uses TIA Portal software to write platform control program,and draws the automatic sequence control function chart.Four column hydraulic cylinder's controller is Pid,at the same time,the synchronization is mainly realized by adjusting the electro-hydraulic proportional speed control valve.The application of the hydraulic lifting platform ensures that the system has high security and reliability,and provides guidance for the design and research of other lifting platforms.