生产线动力头电液控制系统设计+PLC梯形图

摘要电液控制系统综合了电气和液压两方面的优点，其控制高精度性和响应快速性远远高于普通的液压传动，因而在现代工业生产线中被广泛应用。本文根据给定的设计参数，设计了生产线动力头的液压系统和电气控制系统。49101

文中首先对液压系统进行工况分析，通过分析计算，绘制了速度循环图和负载循环图，初步选定液压缸工作压力，并计算加紧液压缸和工作缸尺寸以及各阶段流经液压缸的流量；其次根据液压系统供油方式、调速方式、速度换接方式以及加紧回路的选择拟定液压系统图，并且对系统进行工作分析，计算和选择液压元件，确定管道尺寸和油箱容积，并对系统的压力损失和油液温升进行验算，以达到设计的要求；然后对液压系统进行主回路和电气控制线路设计，合理选择电气元件并绘制电气原理图；最后根据生产线动力头的工艺流程和动作顺序，完成PLC的选型并绘制外部接线图和PLC梯形图，编写语句表，完成设计的要求。

关键词：液压系统；电气控制；PLC；梯形图

Abstract

The electro-hydraulic control system integrated electrical and hydraulic two aspects of the advantages, its high control accuracy and quickening the response is much higher than normal hydraulic transmission, therefore in the modern industrial production line has been widely used. This paper according to the given design parameters, the design of the product line power head hydraulic system and electric control system.

This paper first to the hydraulic system of condition analysis, through calculation and analysis, mapped the speed cycle figure and load circulation chart, the initial selection of hydraulic cylinders working pressure, and calculation to hydraulic cylinder and work cylinder size and flows through each stage of the hydraulic cylinder flow; second oil hydraulic system according to mode, speed mode, the speed-for-access approach and the choice of stepping up the development of hydraulic system circuit diagram and working status of the system, calculation and choose hydraulic components, sure pipe size and fuel tank capacity, and to the system pressure loss and the oil temperature rise link, in order to achieve the design requirement; and then the hydraulic system of main loop and electrical control circuit design, rational choice electrical components and map electrical diagram; last according to the production line power head and process of the action sequence, complete the selection and map PLC outside the wiring diagram and PLC ladder diagram, write statement table, completion of design requirements.

Keywords: hydraulic system; electrical control; PLC; ladder diagram

第一章绪论 1

1.1 概述 1

1.2 液压技术的发展和应用 1

1.2.1 液压技术的发展概况 1

1.2.2 液压技术的应用领域 2

1.3 电液控制系统的特点 3

1.4 电液控制系统设计分析 4

第二章液压系统的设计计算 5

2.1 设计的技术要求和设计参数 5

2.2 负载分析 5

2.4 确定执行元件主要参数 7

2.4.1 计算液压缸内径D和活塞杆直径d 7

2.4.2 计算各工作阶段液压缸所需的流量 9

第三章拟定液压系统原理图 10

3.1 基本方案拟定生产线动力头电液控制系统设计+PLC梯形图:http://www.youerw.com/zidonghua/lunwen_51940.html