冷轧带钢平整机主传动系统设计

摘 要

带钢经退火工序后，内部残余应力得到释放，板形变坏；同时，由于在退火炉中存放时间过长，带钢的表面质量会变坏。为改善上述缺陷，需进行带钢平整工艺。在这样的背景下，平整机应运而生。平整机用来在常温状态下，将经过冷轧并退火后钢卷，通过平整以提高带钢机械性能、改善带钢板形、提高带钢表面光洁度，获得符合要求的钢卷。本文先介绍了冷轧带钢生产工艺流程、冷连轧机组的发展及平整工序，接着引出平整机，阐述了平整机的作用、组成、工作原理等。接着对比选取了适当的电机、联轴器、减速器、齿轮座、连接轴。接着计算出了平整机的轧制力、轧制力矩及电机功率。在此基础上设计并校核了齿轮座中一对人字齿的参数，校核了轴上的危险截面，同时校核了轧辊强度，计算了轴承寿命。文末，大致介绍了平整机中常用的润滑、密封方式，介绍了平整机的经济性、环保性。

关键词：冷轧带钢；平整机；主传动系统

                The Main Drive System Design of Cold Rolling Strip Flat Machine

Abstract

Strip steel after annealing process, the residual stress release, deterioration of the plate; at the same time, in the annealing furnace in storage for a long time due to, the surface quality of the strip will go bad. In order to improve the defects, to strip flattening process. In this context, flat machine came into being. The temper mill is used in the normal temperature state, after the cold rolled and annealed steel coil, through the level to improve the mechanical properties of the steel strip, improve strip shape, improve the steel surface finish, to meet the requirements of steel coil. 

This paper introduces the production process of cold rolling strip, the development of cold rolling mill and the leveling process, and then leads to the formation of the mill, and expounds the function, composition, working principle and so on. Then the appropriate motor, coupling, reducer, gear seat, connecting shaft are compared and selected. Then calculate the smooth rolling force, rolling torque and motor power machine. On the basis of design and check the gear seat in a pair of herringbone gear parameters, checking the dangerous section of the shaft and check the strength of the roller bearing life are calculated. At the end of this paper, introduces the mechanical equipment used in lubricating and sealing method, introduces the economic and environmental protection machinery and equipment. 

Key Words: Cold rolling strip;Main drive system;Flat machine
目  录
1 绪论 1
   1.1 冷轧带钢生产工艺流程 1
   1.2 冷连轧机组的发展 2
   1.3 平整工序 3
   1.4 平整机的作用 3
   1.5 平整机的组成 3
   1.6 平整机的分类 4
   1.7 平整方式的分类及特点 5
   1.8 平整机板形控制的主要项目 5
2 平整机主传动系统总体方案设计 7
   2.1 电机 7
   2.2 联轴器 7
   2.3 连接轴 8
   2.4 减速器 8
   2.5 齿轮座 9
3 平整机参数计算 10
   3.1 辊身的计算 10
   3.2 辊径的计算 10
   3.3 辊颈的计算 11
   3.4 辊头的计算 12
4 轧制力和轧制力矩计算 13
   4.1 轧制力的计算 13
   4.2 轧制总力矩的计算 15
5 电机功率的计算 18

6 主要零件的强度计算 19
   6.1 齿轮的计算与校核 19
   6.2 轧辊的校核 23
      6.2.1 工作辊的校核 24
      6.2.2 支承辊弯曲应力的校核 25
      6.2.3 轧辊接触应力的校核 26
   6.3 齿轮轴的校核计算 28

      6.3.1 齿轮轴的计算校核简图26

      6.3.2 齿轮轴的校核计算 29
      6.3.3 弯扭的计算与校核 30
      6.3.4 精确校核轴的疲劳强度 31
   6.4 工作辊轴承的校核 34
7 润滑与密封 35
   7.1 润滑 36
      7.1.1 润滑的目的 36
      7.1.2 润滑剂和添加剂 36
      7.1.3 常见零件的润滑方式 37
   7.2 密封 39
      7.2.1 密封的作用 39
      7.2.2 常用的密封方式 39
8 经济性环保性分析 41
   8.1 设备的经济性 41
   8.2 设备的环保性 42
结论 42
致谢 45
参考文献 46