机械机电类毕业论文(毕业设计)-mg200475-w型采煤机设计.doc

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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--、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- m, Hard coal to the gently inclined seam. With the traditional vertical layout of the single-pared to Shearer, Shearer will be the ranging-arm installed directly in the cutting of the shell, gear device exclusively on cutting Shell and ary reducer, the abolition of the spiral bevel gears, gear box fixed, Rocker rotating sets of structures, their structure is simpler, pact 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 ponents. The shearer cutting unit used four drive; Before three straight tooth drive, the fourth level of ary 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 ary reducer and drum direct link, canceled installed in the drum Pick, simple and reliable.
Keywords: shearer, ranging-arm,structure,design
第1章绪论

我国是产煤大国,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。煤炭工业的机械化是指采掘、支护、运输、提升的机械化。其中采掘包括采煤和掘进巷道。随着采煤机械化的发展,采煤机是现在最主要的采煤机械。20世纪70年代主要靠进口采煤机来满足我国生产的