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摘 要 G400/900-WD 型采煤機是一種多電機驅動，橫向布置的交流電牽引采煤 機。該機功率大，多電機橫向布置，整機結構緊湊，采用交流變頻調速系 統(tǒng)，變頻調速采用機載式。截割電機、牽引電機等主要元部件均可從采空 區(qū)抽出，容易更換，方便維修。 牽引電機輸出的轉矩經(jīng)三級圓柱齒輪和二級行星齒輪減速器減速后， 由行星架輸出，通過驅動輪與行走輪相嚙合，再由行走輪與工作面刮板輸 送機上的齒軌嚙合使采煤機來回行走，同時制動軸輸出軸通過鍵與制動器 相連，實現(xiàn)電牽引部的制動。 左右牽引部，中間電控箱的聯(lián)結螺柱，定位銷，搖臂與左右電牽引部 鉸接銷軸四組，這些裝置將采煤機各大部件聯(lián)接成一個整體，起到緊固及 連接的作用。牽引部與行走部做成一體，使機身整體尺寸緊湊，縮小了機 身寬度。 G400/900-WD 型采煤機，操作方便，可靠性高，事故率低，開機效率高， 可滿足高產(chǎn)高效工作面的需要。 關鍵詞：采煤機；牽引部；行走部；行星齒輪 ABSTRACT The G400/900-WD coal mining machine is more than one kind of motor- driven, crosswise arrangement alternating current hauling coal mining machine. This machine power is big, the multi-electrical machinery crosswise arrangement, the complete machine structure is compact, uses the exchange frequency conversion velocity modulation system, the frequency conversion velocity modulation uses aircraft-borne -like. Cuts the electrical machinery, the pulling motor and so on main part to be possible to extract from the worked-out section, easy to replace, facilitates the service. The pulling motor outputs torque decelerates after the third-level cylindrical gears and the second-level planet gear reduction gear, by the planet carrier outputs, with walks lining on the feet and palms of buddha meshing through the driving gear, by walks again round and on working surface scraper conveyer's rack rail meshing causes the coal mining machine back and forth to walk, simultaneously the brake spindle output shaft is connected through the key and the brake, realizes the electricity hauling department brake. About the hauling department, the middle electrically controlled box's joint stud, the positioning pin, the rocking shaft sells the axis four groups with about electricity hauling department hinge, these installments join coal mining machine various major assemblies a whole, plays the fastening and the connection role. The hauling department with walks to make a body, caused the fuselage overall size to be compact, reduced the fuselage width. The G400/900-WD coal mining machine, the ease of operation, the reliability is high, the accident rate is low, the starting efficiency is high, may satisfy the high production highly effective working surface the need. Key word: The coal mining machine； the hauling department； walks； Planet gear 目 錄 1 概述 ..........................................................................................................................1 1.1 采煤機的發(fā)展概況 ..............................................................................................1 1.2 國際上電牽引采煤機的技術發(fā)展狀況 ..............................................................1 1.3 國內電牽引采煤機的發(fā)展狀況 ..........................................................................3 1.3.1. 20 世紀 70 年代是我國綜合機械化采煤起步階段 ....................................3 1.3.2 .20 世紀 80 年代是我國采煤機發(fā)展的興旺時期 ........................................4 1.3.3 .20 世紀 90 年代至今是我國電牽引采煤機發(fā)展的時代 ............................5 1.4 采煤機的發(fā)展趨勢 ..............................................................................................7 1.5 采煤機類型 ..........................................................................................................7 1.6 采煤機的組成 ....................................................................................................10 1.7 電牽引采煤機的優(yōu)點 ........................................................................................12 2 牽引部的設計 ........................................................................................................14 2.1 牽引機構傳動系統(tǒng) ............................................................................................14 2.1.1 主要技術參數(shù) ..............................................................................................14 2.1.2 電動機的選擇 ..............................................................................................14 2.1.3 傳動比的分配 ..............................................................................................15 2.2 牽引部傳動計算 ................................................................................................17 2.2.1 各級傳動轉速、功率、轉矩 ......................................................................17 2.3 牽引部齒輪設計計算 ........................................................................................18 2.3.1 齒輪 1 和惰輪 2 的設計及強度效核 ..........................................................18 2.3.2 齒輪 3 和惰輪 4 的設計及強度效核 ..........................................................24 2.3.3 齒輪 5 和惰輪 6 的設計及強度效核 ..........................................................30 2.4 牽引部行星機構的設計計算 ............................................................................35 2.4.1 行星齒輪的計算 ..........................................................................................37 2.4.2 行星輪嚙合要素驗算 ..................................................................................49 3 軸的設計及校核 ....................................................................................................53 3.1 確定軸的最小直徑 ............................................................................................53 3.2 軸的校核 ............................................................................................................56 3.3 花鍵的強度校核 ................................................................................................63 3.4 軸承的校核 ........................................................................................................65 4 采煤機的使用和維護 ............................................................................................67 4.1 采煤機的維護 ....................................................................................................67 4.2 采煤機軸承的維護及漏油的防治 ....................................................................69 4.3 煤礦機械傳動齒輪失效的改進途徑 ................................................................71 5 機械密封 ................................................................................................................78 參考文獻 ...................................................................................................................82 英文原文 ...................................................................................................................83 中文譯文 ...................................................................................................................91 致謝 ...........................................................................................................................98