高空作业车的液压系统、液压站的设计及PLC控制.doc

PAGE PAGE 毕业设计说明书 完整设计图纸请联系本人，参见豆丁备注。 题目：　高空作业车的液压系统、液压站的设计与PLC控制 毕业生姓名 ： 专业 ： 机械设计制造及其自动化 学号 ： 指导教师 ： 所属系（部） ： 机械电子工程系 二〇一四年六月 摘 要 高空作业车是一种应用范围广泛的工程机械，它是利用汽车底盘作为行走机构，并且把工作人员和工作装备运送到指定高度进行作业的特种车辆。本文对高空作业车的主要的结构作了简单的介绍；它的工作过程是通过液压系统和PLC的联合控制的作业的。 本文对高空作业车主要机构的液压系统进行了详细的分析及其设计，对马达、液压泵、液压阀等进行了选型计算，并且设立了液压站。高空作业车作业平台和支腿机构的调平是由双轴倾角传感器分别检测X、Y轴方向水平状态的，当发生倾斜时，传感器就传出模拟信号（电压/电流）与给定精度的设定值相比较并将结果传给PLC，PLC 根据预置程序输出调平信号分别控制各电磁阀，使液压缸动作，消除作业平台和支腿机构的倾角水平误差，实现自动控制调平。通过利用液压系统和PLC控制的设计和调节，使得高空作业车作业平台的稳定性和可靠性提高，同时提高了工作人员在工作时的安全性。 关键词：高空作业车；作业平台；液压系统；PLC Abstract Aerial vehicle is engineering a wide range of applications, it is the use of automobile chassis as the walking mechanism, and the transport workers and equipment to the designated special vehicle height for work. The main structure of aerial vehicles are introduced; its working process is through the joint control of hydraulic system and PLC operation. The main mechanism of hydraulic system of high-altitude operation car are analyzed and designed in detail, on the motor, hydraulic pump, hydraulic valve are calculated, and set up the hydraulic station. Aerial work platform and the supporting leg mechanism of leveling is composed of tilt sensor was used to detect X, Y axis horizontal state, when the inclination sensor, spread the analog signals (voltage / current) and compared the results to the PLC with a given accuracy setting, PLC respectively to control the solenoid valve according to a preset program output leveling signal, to make the action of hydraulic cylinder, eliminating angle error operation platform and the leg mechanism, realize the automatic control of leveling. By adjusting the design and use of hydraulic system and PLC control, the work platform of aerial vehicle stability and reliability, but also improve the safety of staff at work. Keywords: high altitude working vehicle; hydraulic system; PLC platform; 目 录 TOC \o "1-3" \h \z \u 摘 要 i Abstract ii 第1章 绪 论 1 1.1 引 言 1 1.2 高空作业车的发展