机械论文编号:JX317  所有图纸,外文翻译。论文字数:12814.页数:72
目录
目录.................................................................. 1
第1章绪论...........................................................  4
1.1引言 .............................................................. 4
1.2采煤机械概述 ...................................................... 4
1.2.1采煤机械化的发展................................................. 4
1.2.2机械化采煤的类型................................................  5
1.3采煤机简述........................................................  6
1.31采煤机的分类、组成和工作原理 ..................................... 6
1.32滚筒采煤机的工作原理 ............................................. 7
1.33滚筒采煤机的特点.................................................  8
1.34煤机与刨煤机的比较 ............................................... 8
第2章  MG200/475－W型采煤机 .......................................... 10
2.1概述 ...............................................................10
2.2主要用途及适用范围 ................................................ 10
2.3型号的组成及其代表的含义..........................................  10
2.4 使用环境条件 ..................................................... 11
2.5安全警示..........................................................  11
第3章  MG200/475－W型采煤机截割部的设计..............................  12
3.1 截割部传动总体方案 ............................................... 12
3.1.1 设计总则.......................................................  12
3.1.2 已知条件.......................................................  12
3.1.3 截割电动机的选择 ............................................... 12
3.1.4 计算传动效率 ................................................... 13
3.1.5 传动比的分配及配齿情况 ......................................... 13
3.2 截割部传动系统齿轮的校核计算...................................... 14
3.2.1  Z1与Z2啮合参数及强度计算 .......................................14
3.2.2  Z2与Z3啮合参数及强度计算 .......................................19
3.2.3  Z4与Z5啮合参数及强度计算....................................... 23
3.2.4 Z6与Z7啮合参数及强度计算 ........................................28
3.2.5 Z8与Z9啮合参数及强度计算........................................ 33
3.2.6行星传动齿轮参数及强度计算....................................... 38
3.3 截割部传动系统各传动轴、轴承的校核计算 ............................50
3.3.1截一轴轴、轴承的校核计算 .........................................50
3.3.2惰一轴轴、轴承的校核计算 .........................................52
3.3.3截二轴轴、轴承的校核计算 .........................................55
3.3.4 截三轴轴、轴承的校核计算 ........................................57
3.3.5 惰二轴轴、轴承的校核计算 ........................................60
3..3.6 惰三轴轴、轴承的校核计算....................................... 63
3.3.7  截四轴轴、轴承的校核计算....................................... 63
3.3.8太阳轮轴轴、轴承的校核计算 .......................................65
3.3.9行星轮轴轴、轴承的校核计算 .......................................66
3.4各轴花键的设计与校核 ...............................................67
3.4.1截一轴花键设计计算 ...............................................67
3.4.2 截二轴花键设计计算 ..............................................68
3.4.3 截三轴花键设计计算 ..............................................69
3.4.4截四轴花键设计计算 ...............................................70
3.4.5输出轴花键设计计算 ...............................................71
总结.................................................................  73
参考文献 ............................................................. 74

摘   要
     本说明书描述了MG200/475-W型液压牵引采煤机整机方案设计以及截割部的设计和计算过程。
MG200/475-W型液压牵引采煤机可用于煤层厚度为1.3-2.5m、煤质中硬的缓倾斜煤层。与传统的纵向布置的单电机采煤机相比，该采煤机将截割电机直接安装在截割部壳体内，齿轮减速装置全部集中在截割部壳体及行星减速器内，取消了螺旋伞齿轮、固定减速箱、摇臂回转套等结构，使其结构更简单、紧凑，可靠性更高。
截割部是采煤机直接落煤、装煤的部分，其消耗的功率约占整个采煤机功率的80%-90%，主要由截割部壳体、截割电机、齿轮减速装置、滚筒等组成。该采煤机的截割部采用四级传动；前三级为直齿传动，第四级为行星传动。二级传动的圆柱齿轮为可换齿轮，使输出转速可根据不同的煤质硬度在两档速度内选取。截割部采用了三个惰轮轴，使采煤机能够满足截割高度对截割部长度的要求。设计将截割部行星减速器和滚筒直接联结，取消了安装在滚筒上的截齿，使结构简单、可靠。

关键词：采煤机，截割部，结构，设计

Abstract
This brochure describes the type of hydraulic MG200/475-W shearer traction unit program design and cutting the Department of Design and calculation process.
MG200/475-W traction Shearer hydraulic seam thickness can be used for a .3-2.5 m, Hard coal to the gently inclined seam. With the traditional vertical layout of the single-motor compared to Shearer, Shearer will be the ranging-arm installed directly in the cutting of the shell, gear device exclusively on cutting Shell and planetary reducer, the abolition of the spiral bevel gears, gear box fixed, Rocker rotating sets of structures, their structure is simpler, more compact and higher reliability.
Ranging-arm of the shearer is directly charged coal, the coal loaded, its about the power consumption of the entire power shearer 80% -90%, mainly by cutting Shell, cutting electrical, Gear and drum components. The shearer cutting unit used four drive; Before three straight tooth drive, the fourth level of planetary transmission. 2 Drive Gear to be for the gears, enabling the output speed can be based on different coal hardness in two tranches within the selected speed. Cutting the Department has adopted a three lazy axle, to meet the shearer cutting height on the ranging-arm degree requirements. Designed to be cutting planetary reducer and drum direct link, canceled installed in the drum Pick, simple and reliable.

Keywords: shearer, ranging-arm,structure,design