R3粗轧机总体设计 摘要 热带钢连轧是为提高热轧机产量，改进产品质量而采用的轧制方法。热轧带钢厂轧制区分为粗轧区和精轧区两部分。粗轧机是粗轧区最后一架粗轧机，它是四辊万能轧机，采用不可逆轧制。它的小立辊不仅轧边，而且起到对准轧制中心线的作用。在粗轧机出口处安装了测厚仪、测宽仪、温度测量装置，目的是保证粗轧机能够为精轧机组提供合格的料坯，同时也为精轧机组计算机控制提供输入参数。粗轧机在热轧带钢轧机中是非常重要的。通过粗轧机设计，掌握了轧机设计全过程和设计方法，并且为以后工作打下坚实基矗 本设计按给定的压下量和轧制速度，制定设计方案，计算轧制力和轧制力矩，选择主电机型号及容量。对万向接轴的密封润滑以及齿轮齿面硬度进行了改进，并对其主要零件的强度和刚度进行了计算，如万向接轴扁头、叉头应力计算，轴体强度计算；工作辊、支承辊强度计算；闭式机架强度计算等，最后对设备可靠性和经济性进行评价。 该轧机可应用于热轧带钢厂，也可作为中板厂精轧机使用。 关键字：粗轧机，万能轧机，热轧带钢，密封，润滑 Roughi
ng Mill Desig
n Abstract Hot strip co
nti
nuous rolli
ng is the rolli
ngway to raise the output of hot rolli
ng mill a
nd improve product quality. 1700 hot strip mill rolli
ngzo
ne is made up of rough rolli
ngzo
ne a
nd fi
nishzo
ne. R rough mill is the last o
ne i
n the rough rolli
ngzo
ne,which is a four-high-sta
nd u
niversal mill, a
nd it applies to
no
nreversible rolli
ng. Itsvertical edgi
ng roll ca
n
not o
nly roll o
n edge, but also play a
n importa
nt role i
n aimi
ng at axis of rolli
ng. There are a thick
ness tester, awidth gauge a
nd a temperature measuri
ng device at the outlet of R roughi
ng mill,which supplies qualified raw material to fi
nishi
ng trai
ns, i
n order that it ca
n offer the computers of fi
nishi
ng trai
ns i
nput parameters, It is of importa
nce i
n 1700 hot strip mill. After this desig
n, desig
n method a
nd desig
n process ca
n be mastered, a
nd it ca
n provide the fou
ndatio
n for the futurework. This desig
n makes desig
n project, a
nd calculates rolli
ng load a
nd rolli
ng torque i
n the light of rolli
ng speed a
nd rolli
ng draft, a
nd the
n chooses the model
number a
ndvolume of mai
n motor. At the same time it cha
nges the lubricati
ng method of u
niversal shaft a
nd add a seali
ng device to it, i
n order to improve the i
nte
nsity of gear tooth fla
nk. I
n the desig
n, stre
ngth a
nd tough
ness of the mai
n compo
ne
nt parts have bee
n calculated, such asworki
ng a
nd backi
ng i
nte
nsity determi
natio
n; u
niversal shaft i
nte
nsity determi
natio
n, spi
ndle tumgue a
nd jaw stress calculatio
n. At last, the reliability a
nd eco
nomical efficie
ncy of the equipme
nt have bee
n estimated. This roughi
ng mill ca
n apply to hot strip mill, a
nd also ca
n make use of a fi
nishi
ng mill i
n the medium plate mill. Keywords : Roughi
ng mill; U
niversal mill; Hot strip mill; Airproof, Lubricate 目录 1绪论1 1.1选题背景及意义1 1.2热轧带钢连轧机发展趋势1 1.2.1我国热轧带钢连轧机发展过程概述1 1.2.2我国热轧带钢连轧机发展趋势2 1.2.3我国热轧带钢轧机所使用的主要新技术2 1.3热轧带钢连轧机5 1.3.1热轧带钢连轧机概况5 1.3.2热轧带钢连轧机生产工艺过程5 1.3.3热轧带钢连轧机原料规格6 1.3.4热轧带钢连轧机产品规格6 1.3.5热轧带钢连轧机产品品种6 1.4粗轧机研究的内容和步骤6 2方案选择与评述6 2.1主传动装置选择6 2.1.1主传动装置型式的选择7 2.1.2电机型式的选择7 2.1.3接轴的选择7 2.1.4联轴节（器）的选择7 2.2机架的结构选择8 2.3轧辊轴承选择8 2.3.1工作辊轴承型式的选择8 2.3.2支承辊轴承型式的选择8 2.4改进性设计方案8 2.4.1万向接轴铰链润滑及密封的改进8 3主电机容量选择9 3.1轧制力计算9 3.1.1轧辊主要参数的确9 3.1.2轧制力计算11 3.2轧制力矩计算12 3.2.1四辊轧机受力分析12 3.2.2驱动轧辊的力矩13 3.3主电机容量选择16 4机架的强度计算18 4.1机架的结构确定18 4.2闭式机架强度计算18 4.2.1闭式机架强度计算基本假设18 4.2.2求静不定力矩18 5滑块式万向接轴强度计算24 5.1滑块式万向接轴叉头应力计算24 5.2接轴扁头应力计算25 6齿轮计算26 6.1选定齿轮类型、精度等级、齿数、材料及热处理方式27 6.2按硬齿面接触强度设计27 6.2.1确定公式内的各计算数值27 6.2.2计算28 6.3按齿根弯曲疲劳强度计算29 6.3.1确定公式中各数值29 6.3.2设计计算30 6.3.3几何尺寸计算31 总结31 参考文献32 致谢33