热轧加热炉步进梁液压系统设计.docVIP

热轧加热炉步进梁液压系统设计 摘要 步进梁式加热炉具有加热速度快、温度均匀、操作灵活等优点，因而广泛的运用于现代冶金行业，它对提高钢材的产品质量，钢坯的成材率以及轧机设备的寿命由很大影响。 步进式连续加热炉靠炉底或水冷金属梁的上升、前进、下降、后退的动作把料坯一步一步地移送前进的连续加热炉。本次设计主要是设计步进梁加热炉的液压比例系统，采用比例控制，对速度的要求较高，由于在以一个运动周期中，负载的变化以及对钢坯运动速度的不同要求，要通过控制系统的流量来满足这些要求。为了实现对跑偏钢坯的校正，本系统加入对中液压缸来提前校正。为了实现钢坯在出现故障的时候能够在任意位置停止，系统加入了液压锁紧装置，以免出现系统失控。 通过对系统的校核和验算，本系统满足工艺要求。 关键词：步进梁式加热炉； 比例控制； 液压系统 Abstract Walking beam type furnace have many advantages, such as rupid speed of heating , homogeneity of heating temperature, flexibility of operation, so it has been used abroad in modern Metallurgy industry.It can improve the quality of steel products, the yield of billet, the life-span of rolling mill equipment. Walking beam type furnace use the beam at the bottom of the furnace or the cool steel beam to rise , to go ahead , to come down , to go back . So in this circle, the billet will be translated to the furnace for heating . In my graduation thesis, I will design the hydraulic proportioning system for the walking beam type furnace. As this system require strict movement of the beam, so proportional control will be used . As we know the speed of the beam will change at the reason of the change of the load in a circle, so we must change the flow of hydraulic actuating cylinder . In order to revise pass-line deflection of the billet, we use two horizontal cylinder to adjust thecentering of the billet ahead of the circle. At the same time, we use locking aquipement to fasting the beam at any location in case of malfunction. As the checking calculation of this system, it will meet process requirements. Key words: Walking beam type furnace; Proportional control; Pass-line deflection revise.  目录 摘要 I Abstract II 1 1.1设计要求 1 1.2 液压传动简介 2 2.设计要求及原始数据 6 2.1设计要求: 6 2.2工艺参数: 6 3拟定液压系统原理图 7 4 设计计算及说明 9 4.1 负载分析及负载循环图 9 5.液压系统主要参数计算 12 5.1初选系统工作压力 12 5.2计算液压缸的主要结构尺寸 12 5.3计算液压执行原件所需的流量 13 5.3.1 流量循环图 13 5.3.2 流量循环图 13 5.4 计算系统实际压力 14 5.4.1计算压力 14 5.4.2压力循环图 15 6 液压元件的选择 17 6.1 液压泵的选择 17 6.2 电动机的选择 17 6.3 液压阀的选择