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摘 要 本說明書描述了MG200/475-W型液壓牽引采煤機(jī)整機(jī)方案設(shè)計以及截割部的設(shè)計和計算過程。 MG200/475-W型液壓牽引采煤機(jī)可用于煤層厚度為1.3-2.5m、煤質(zhì)中硬的緩傾斜煤層。與傳統(tǒng)的縱向布置的單電機(jī)采煤機(jī)相比，該采煤機(jī)將截割電機(jī)直接安裝在截割部殼體內(nèi)，齒輪減速裝置全部集中在截割部殼體及行星減速器內(nèi)，取消了螺旋傘齒輪、固定減速箱、搖臂回轉(zhuǎn)套等結(jié)構(gòu)，使其結(jié)構(gòu)更簡單、緊湊，可靠性更高。 截割部是采煤機(jī)直接落煤、裝煤的部分，其消耗的功率約占整個采煤機(jī)功率的80%-90%，主要由截割部殼體、截割電機(jī)、齒輪減速裝置、滾筒等組成。該采煤機(jī)的截割部采用四級傳動；前三級為直齒傳動，第四級為行星傳動。二級傳動的圓柱齒輪為可換齒輪，使輸出轉(zhuǎn)速可根據(jù)不同的煤質(zhì)硬度在兩檔速度內(nèi)選取。截割部采用了三個惰輪軸，使采煤機(jī)能夠滿足截割高度對截割部長度的要求。設(shè)計將截割部行星減速器和滾筒直接聯(lián)結(jié)，取消了安裝在滾筒上的截齒，使結(jié)構(gòu)簡單、可靠。 關(guān)鍵詞：采煤機(jī)，截割部，結(jié)構(gòu)，設(shè)計 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