MG300700-WD交流电牵引采煤机设计

论文编号:JX271 所有图纸,任务书,外文翻译。论文字数:31543.页数:78

摘   要
     本说明书描述了MG300/700-W型电牵引采煤机整机方案设计以及截割部的设计和计算过程。
MG300/700-WD型液压牵引采煤机可用于煤层厚度为2-4m、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 MG300/700-W shearer traction unit program design and cutting the Department of Design and calculation process.
MG300/700-WD traction Shearer hydraulic seam thickness can be used for 2-4 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

目    录
1 .采煤机的发展概况 ..........................................................1
1.1 国际上的技术现状和趋势 ...................................................1
1.1.1 装机功率有较大幅度增加 .................................................1
1.1.2 电牵引采煤机成为主导机型 ...............................................1
1.1.3 牵引速度和牵引力不断增加 ...............................................1
1.1.4 采用多电动机驱动横向布置的总体结构 .....................................2
1.1.5 滚筒的截深不断增大..................................................... 2
1.1.6 普遍采用中高压供电..................................................... 2
1.1.7 完善的监控系统..........................................................2
1.2 国内使用和研制情况....................................................... 2
1.2.1 双级行星齿轮减速器的设计............................................... 2
1.2.2 牵引机构采用无链牵引系统............................................... 3
1.2.3 采用液压紧固技术 .......................................................3
1.2.4 交流变频调速牵引装置的研制............................................. 3
1.2.5 电控技术的研究和电气控制装置的研制..................................... 3
1.2.6 截割部电动机使用弹性扭矩轴............................................. 3
1.2.7 为了提高块煤率，采用耐磨滚筒及镐形截齿................................. 4
2.对设计题目的分析........................................................... 4
2.1 设计思路的提出........................................................... 4
2.2 设计蓝图................................................................. 4
2.1.4 牵引行走部............................................................. 6
2.1.5 截割部、行走部电机的选用 ...............................................8
3 设计过程 ...................................................................9
3.1 整机功率的安排 ...........................................................9
3.2 摇臂减速器传动比的安排................................................... 9
3.3 摇臂减速箱的具体结构..................................................... 9
3.3.1 壳体................................................................... 9
3.3.2 一轴................................................................... 9
3.3.3 第一级减速惰轮组....................................................... 9
3.3.4 二轴................................................................... 9
3.3.5 第二级减速惰轮 .........................................................9
3.3.6 中心齿轮组............................................................. 9
3.3.7 第一级行星减速器 .......................................................9
3.3.8 第二级行星减速器 .......................................................10
3.3.9 中心水路............................................................... 10
3.3.10 离合器................................................................ 10
3.4各轴的转速 ................................................................10
3.5 各轴的功率 ...............................................................10
3.6 截割部齿轮的设计计算..................................................... 10
3.6.1 第一级减速圆柱直齿轮的设计计算 .........................................10
3.6.2 第二级减速圆柱直齿轮的设计计算......................................... 18
3.6.3 第一级行星减速器的设计计算 .............................................26
3.6.4 第二级行星减速器的设计计算............................................. 33
3.7 截割部轴的设计及校核以及轴承的选用和校核................................. 41
3.7.1 齿轮轴1 ................................................................41
3.7.2 第一级惰轮轴 ...........................................................43
3.7.3 二轴齿轮............................................................... 46
3.7.4 第二级惰轮轴........................................................... 49
3.7.5 第三级惰轮轴（与第二级惰轮轴相同） .....................................52
3.7.6 中心齿轮轴 .............................................................52
3.8截割部花键连接强度校核 ....................................................55
3.8.1 电动机输出轴与齿轮啮合处的花键 .........................................55
3.8.2 二轴处与齿轮啮合的花键..................................................56
3.8.3 中心轮与太阳轮啮合处的花键............................................. 56
3.8.4第一级行星减速器机架与第二级行星减速器太阳轮啮合处的花键 ................57
3.8.5 方法兰与第二级行星减速器机架啮合处的花键............................... 57
4 辅助部件................................................................... 58
4.1 机身连接 .................................................................58
4.2 托缆装置................................................................. 59
4.3 喷雾冷却系统............................................................. 59
4.3.1 喷雾冷却系统的作用...................................................： 59
4.3.2 喷雾冷却系统组成： .....................................................59
4.3.3 喷雾冷却系统：......................................................... 59
4.4、辅助液压系统 ............................................................60
4.4.1 辅助液压系统的作用及组成............................................... 60
4.4.2 辅助液压系统的组成..................................................... 61
4.5、护板及拆卸工具.......................................................... 61
4.5.1 组成 ...................................................................61
4.5.2 作用及工具............................................................. 61
4.6. 螺旋滚筒 ................................................................61
专题论述重载齿轮变位系数的选择：............................................. 62
变位齿轮的产生............................................................... 62
变位齿轮的优点............................................................... 63
变位系数的选择.......................................................... .....63
结论........................................................................ 64
参考文献：................................................................... 65
英文原文 .....................................................................70
致   谢 ......................................................................76