摘 要

水泥、冶金等行业大量运用回转窑来煅烧原材料。回转窑主要由筒体、轮带和托轮组成，托轮通过轮带对筒体起支承作用。在水泥回转窑生产中，托轮工作面的圆柱度直接影响回转窑设备的正常运转。窑长期运行后，轮带与托轮表面常出现凸凹不平磨损，会防碍窑筒体的正常上行与下行移动，严重时将导致托轮轴端面的摩擦高温、轴瓦发热而损毁，引起突然停窑事故。因此及时在运转中修复托轮和轮带的工作表面，对保证窑正常生产，提高窑运转率非常重要。

本文首先分析托轮和轮带产生凹凸磨损的主要原因，对此提出解决思路，在综合分析国内外托轮和轮带修复技术的基础上选定砂带磨削方案。通过分析砂带磨削机理，进行砂带磨削装置的设计。其主要包括以下几个部分：砂带磨削装置的整体布局，砂带磨头各主要机构的设计，砂带的选型，砂带磨削参数的选择与设计，高速电机的型号选择，进给机构的选择与设计，并设计磨机及其附属机构，使砂带磨削技术方案可行。根据设计的砂带磨机装置，应用SolidWorks软件进行三维建模，完成砂带磨头三维立体图的绘制。最后介绍了接触式滚轮法在线直径测量方法。

本文方案可以在运转中修复托轮和轮带的圆柱度，提高其修复效率和精度，高效地完成移动式回转窑在线修复任务。提高回转窑生产工作效率，具有重要的工程应用价值。

关键词：回转窑；托轮；轮带；砂带磨削；在线修复

Abstract

Cement, metallurgy and other industries use a large number of rotary kilns to calcine raw materials. Rotary kiln mainly by the cylinder, wheel and wheel composition, the wheel through the wheel belt on the role of supporting the cylinder. In the production of cement rotary kiln, the cylindrical surface of the wheel surface directly affects the normal operation of the rotary kiln equipment. After the kiln’s long-term operation, the wheel and the belt surface often appear uneven wear and tear, will prevent the kiln body of the normal up and down movement, even will lead to the end of the wheel shaft friction operates high temperature, bearing heat and damage, causing a sudden kiln accident. Therefore, timely repair roller surface, to ensure the normal production of kilns,and improve kiln production rate is very important.

Firstly, the main reasons for the abrasion and wear of the cable wheel are analyzed, and the solution is put forward for the cause of the wear. Based on the comprehensive analysis of the repair technology of the domestic and international roller belt, I select the technical solutions about belt grinding.Then analyze the grinding mechanism of the belt, and carry out the design of the abrasive belt grinding device.The design of the abrasive belt grinding device mainly includes the following parts: the overall layout of the abrasive belt grinding device, the design of the main body of the abrasive belt, the selection of the belt, the selection and design of the grinding parameters of the belt, The choice of the motor model, the choice and design of the feeding mechanism, and the design of grinding machines and its subsidiary institutions, so that the belt grinding technology program is feasible.According to the design of the abrasive belt grinding device, I use SolidWorks software to carry out the three-dimensional modeling, and complete the three-dimensional drawing of the abrasive belt grinding device .Finally, the on-line diameter measurement method of contact roller method is introduced.

In this paper, the program can repair the wheel of the rotary body, improve its repair efficiency and accuracy, and effectively complete the mobile rotary body on-line repair task.Improve the production efficiency of rotary kiln, has important engineering application value.

Key Words：rotary kiln; roller；tire ；belt grinding; repair

目 录

1 绪论............................................................................................................................................1

1.1 回转窑的应用及发展.............................................................................................................1

1.2 课题的研究背景及意义.........................................................................................................2

1.3国内外的研究现状..................................................................................................................2

1.4. 存在的问题及解决方案........................................................................................................3

1.5 论文主要内容.........................................................................................................................3

2 回转窑托轮工作面修复方法....................................................................................................4

2.1回转窑的主要结构..................................................................................................................4

2.2托轮和轮带的材质及工作环境..............................................................................................5

2.3 托轮和轮带磨损的原因分析.................................................................................................6

2.4 初步选用磨机头砂带磨削方案.............................................................................................7

3 砂带磨削及其关键机构简述....................................................................................................8

3.1 砂带磨削应用及发展.............................................................................................................8

3.2砂带磨削机理..........................................................................................................................8

3.3 外圆砂带磨削.........................................................................................................................9

3.4 砂带磨削磨机头的主要结构...............................................................................................11

4 砂带磨削磨机头设计与选择..................................................................................................12

4.1样机主要尺寸及公差要求....................................................................................................12

4.2 砂带磨头的结构选择...........................................................................................................14

4.3 砂带的选择...........................................................................................................................14

4.4 接触轮的设计.......................................................................................................................16