设计描述：

文档包括:
word版设计说明书一份，45页，约11000字

CAD版本图纸，共2张

摘  要
我国是一个产煤大国，煤炭也是我国最主要的能源，是保证我国国民经济飞速增长的重要物质基础。随着采煤机械化的发展，采煤机成为现在最主要的采煤机械。在我国，中、厚煤层资源分布广泛，煤质好。但机械化开采技术发展速度相对缓慢，随着大批煤矿中、厚煤层的资源开采增多,提高采煤机的工作效率也越来越重要。而采煤机截割部对于整台采煤机非常重要，因为截割机构是采煤机实现落煤、装煤的主要部件。
   说明书主要论述了采煤机截割部机械主传动结构的设计与计算。截割部传动设计采用的是电动机输出动力经由三级直齿圆柱齿轮和行星机构减速，最后带动螺旋滚筒，实现采煤。在设计过程中，对截割部机械主传动结构中的齿轮、轴和轴承进行了设计计算、强度校核和选用，使采煤机的截割部机械主传动结构设计最终满足需要。

关键词：采煤机；截割机构；截割部；行星机构

Abstract
    China is a country with great coal. coal is China's main energy, also,it is the guarantee of our country national economy rapid growth of the important matter foundation. With the development of integrated mechanization coal mining machine, now the main coal mining machinery. In our country, in a widely distributed resource, thick coal seam, coal quality is good. But the mechanization mining technology relatively slow pace of development, with a large number of coal mines in the thick coal seam mining resources, increase work efficiency, enhances the coal mining machine is more and more important. The shearer cutting unit for a mining machine is very important, because the cutting mechanism of shearer is achieved, the main components of coal on coal.
     The manual discusses the design and calculation of the main drive of the shearer cuttingthe Department of Mechanical structure. The cutting unit drive design uses the motoroutput power through three spur gear and planetary bodies slow down, and finally drivenspiral roller to achieve the coal. Structure of the cutting unit mechanical main drive gears, shafts and bearings in the design process, design calculations, strength check and selection, and ultimately meet the needs of the shearer cutting unit mechanical structural design of the main drive.

Key words：Shearer; Cutting agency;Cutting Unit;Planetary bodies.

 
目  录
摘  要 I
Abstract II

第1章  绪论 1
1.1  研究目的和意义 1
1.2  国内外采煤机的发展及趋势 1
1.2.1  国外采煤机的发展概况 1
1.2.2  国内采煤机的发展概况 2
1.3  研究/设计的目标 3
1.4 研究的主要内容 3
第2章  采煤机截割部的方案设计 4
2.1  采煤机截割部设计方案的制定 4
2.2  采煤机截割部设计方案的确定 5
第3章  截割部主传动参数确定 6
3.1  截割部电动机功率计算及电动机选型 6
3.1.1 截割部装机功率的计算 6
3.1.2  电动机的选型 7
3.2  截割部总传动比的计算分配及动力参数的确定 8
3.2.1  总传动比的确定 8
3.2.2  传动比的分配 8
3.2.3  各轴转速、功率、转矩的确定 9
3.3  齿轮参数计算 10
3.3.1  确定第一对啮合齿轮的参数 10
3.3.2  确定第二对啮合齿轮的参数 12
3.3.3  确定第三对啮合齿轮的参数 15
3.3.4  确定行星齿轮的参数 17
3.4  轴组件结构设计 21
3.4.1  截一轴尺寸的确定 21
3.4.2  截二轴尺寸的确定 22
3.4.3  截三轴尺寸的确定 23
第4章  强度校核 25
4.1  齿轮传动强度的校核计算 25
4.1.1  第一对齿轮的强度校核 25
4.1.2  行星轮系校核 27
4.2  轴的强度校核 31
4.3  轴承的选择以及寿命计算 34
4.4  轴上渐开线花键的强度计算 34
结  论 37
致  谢 38
参考文献 39

CONTENTS
Abstract Ⅱ

Chapter 1 Introduction 1
1.1  Research purpose and significance of study 1
1.2  Domestic and foreign development and trend of coal mining machine  1
1.2.1  Overview of the development of foreign Shearer  1
1.2.2  The domestic development situation of coal mining machine  2
    1.3  Research / design goals  3
1.4 The main content of the research  3
Chapter 2 Shearer cutting unit design  4
2.1 Enactment of the shearer cutting unit for Scheme determination    4
2.2  Shearer cutting unit design scheme  5
Chapter 3  Cutting the Department of main transmission parameters  6
3.1  Cutting the Department of Motor power calculation and motor selection  6
3.1.1 Cutting the calculation of the installed power  6
3.1.2  Selection of motor  7
3.2  Calculate the distribution of the cutting unit total transmission ratio and dynamicparameters to determine the  8
3.2.1  The total transmission ratio  8
3.2.2  Distribution of the transmission ratio  8
3.2.3  The shaft speed, power, torque identification  9
3.3 Gear parameters for calculation  10
3.3.1  Determine the parameters of the first pair of meshing gears  10
3.3.2  Determine the parameters of the second pair of meshing gears  12
3.3.3  Determine the parameters of the third pair of meshing gears  15
3.3.4  To determine the parameters of the planetary gear  17
3.4  Axis component structure design  21
3.4.1  Cut-off one axis to determine the size  21
3.4.2 Cut-off two axes to determine the size  22
3.4.3 Cut-off three-axis to determine the size  23
Chapter 4  Strength Check  25
4.1  Check Calculation of gear drive strength  25
4.1.1  The first pair of the strength of the gear check  25
4.1.2  Department of checking of planetary gear  27
4.2  Axis strength check  31
4.3  Bearing selection and life span  34
4.4  Axis involute flower bond strength calculation  34
Conclusions  37
Acknowledgements  38
References  39