【正文】 experiment the coal rock of stage identify a method and analytical the system mainly have:Remember the intelligence distance control, the analytical and natural D of the vibration frequency chart shoot line, measure dint to cut Chi, radioisotope, Zao voice the infrared ray, radar probe into etc..Remember an intelligence distance to control a coal rock boundary to identify and control system among them an application at most is what foreign main model adopt to automatically key up a technique currently in actually the radar39。s sell is replace by the Chi track and weld structure to change whole nicety cast or forge, the width enlarge, the stanza is apart from to increase to176?！狝irdox公司自1984年研制成功第一臺將截割電機布置在搖臂上的多電機橫向布置得Electra550型直流電牽引采煤機后，在其基礎(chǔ)上加大功率，又研制成Electra1000型直流電牽引采煤機。上海分院研制的MG系列電牽引采煤機已形成9大系列共幾十個品種，現(xiàn)正在開發(fā)裝機總功率達l 800 kW 的交流電牽引采煤機； 太原礦山機器廠與上海分院合作， 將AM500液壓牽引采煤機改造成MG 375／830一WD型交流電牽引采煤機后， 又與兗州礦業(yè)集團合作，研制成功了MGTY 400／900—3．3D型交流電牽引采煤機；雞西煤機廠與上海分院合作將MG2300一W 型液壓牽引采煤機改造成MG300／ 360一WD型交流電牽引采煤機后，又開發(fā)了MG200／463型、MG400／985型交流電牽引采煤機；遼源煤機廠與邢臺礦業(yè)集團合作研制成功我國首臺應(yīng)用電磁轉(zhuǎn)差離合器調(diào)速技術(shù)的MG668一WD型電牽引采煤機；無錫采煤機廠與中合作，開發(fā)研制成功國內(nèi)首臺應(yīng)用開關(guān)磁阻電機調(diào)速紡機電研究所技術(shù)的MG200／500一CD型電牽引采煤機。為減少輸電線路損耗，提高供電質(zhì)量和電機性能，普遍采用中高壓供電。9o年代中后期研制的大功率電牽引
采煤機均采用交流變頻調(diào)速牽引系統(tǒng)。2)騎輸送機方式如MG2X100／456一WD型、MGN132／316一DW 型、MG132／315一WD 型、MG132／320一WD型等采煤機，品種最多。3)截割電動機布置在搖臂采空側(cè)。(3)發(fā)展中壓機載。重點是完善和提高系統(tǒng)裝置的抗震、散熱和防潮等性能；(2)研究可靠的微機電氣控制系統(tǒng)。4 國內(nèi)電牽引采煤機研究內(nèi)容國內(nèi)電牽引采煤機代表機型與國外電牽引采煤機相比，在總體參數(shù)性能方面已接近國外20世紀9o年代初期水平。(2)加大功率和功率密度。除了傳統(tǒng)的縱向布置外，還有橫向多電機并聯(lián)布置，如1K103型、MG344型等。1)爬底板方式如MG344一PWD型、EDW300一LN型、MCLE—DR7575M型等采煤機。(7)專家系統(tǒng)和故障診斷把來自監(jiān)控、性能檢測和運行參數(shù)的數(shù)據(jù)和信息與以往機器維護、使用情況進行比較，對機器的健康運行進行診斷，也可對特定錯誤和推薦方案提供風險評估。國外采煤機元部件設(shè)計壽命：齒輪12500h，軸承20 000—30000h，電機絕緣壽命44000h，滾筒采煤64萬t。2 國內(nèi)電牽引采煤機發(fā)展概況近年來。1 國外電牽采煤機發(fā)展概況自1976年研制成功直流電牽引采煤機后，基本停止了液壓牽引采煤機的開發(fā)研究，陸續(xù)開發(fā)了多種形式電牽引采煤機。s method to press the type of lead the electrical engineering and can is divided into direct current to lead and municates to electricity in earlier period leads to adopt coal machine to mostly adopt direct current to adjust soon success from the mid 8039。t easily be continuously pounded at influence。s machine munication interface, break down diagnosis sketch to show and store, wireless control from a distance, lead functions such as control and protection etc.. Japan1987The year continuously develops to succeed various series alternate current of the MCLEDR which mow electrical engineering to lengthways set outs to lead to adopt coal machine behind and developped to cut many electrical engineering alternate currents of mow the electrical engineering horizontal decorations to lead to adopt coal machine again for the last few the coal machine has tiny machine work condition a monitor and breaks down diagnosis system, can the numerical manifestation lead speed, roller position, stay a bottom coal thickness, electrical engineering load and everywhere temperature, have wireless remote control, and can add infrared ray shoot the machine manipulate a liquid to press a support. Poland the KOMAG mine for minerals a mechanization research centerPoland continuously developped KSE in developping successful KSE a 344 thin coal seam alternate currents with Chinese cooperation to lead foundation of adopt the coal machine a 360, KSE a 700, KSE one 800 RWs/2 BPs, KSE a 535 Ss/2 BPs, KSE1000 type etc. alternate current lead to adopt coal the coal machine cuts deeply from 630171111 raise 8001000 mms. RussiaThe former Soviet Union 7039。s machine。80年代后期出現(xiàn)了交流電牽引采煤機。采煤機截深由630 171111提高到800—1 000 mm. 俄羅斯前蘇聯(lián)20世紀70年代研制出K128II．直流電牽引采煤機后，又相繼研制成功多種直流電牽引采煤機。(5)截割功率增大，支架隨機支護的實現(xiàn)，加大滾筒截深。它包括工作面設(shè)備的運行參數(shù)與地面控制中心的數(shù)據(jù)傳輸、運行狀態(tài)和位置的監(jiān)控，地面控制中心對井下設(shè)備工作運行的操作控制，也就是實現(xiàn)無人工作面的最終目的。波蘭電牽引采煤機均采用橫向布置方式。優(yōu)點是體積小，功率大，可靠性高，維修方便；缺點是牽引鏈有脈動，牽引、截割動載荷都較大。中壓機載調(diào)速是薄煤層電牽引采煤機的發(fā)展方向。薄煤層采煤機、輸送機、支架應(yīng)增強配套性，避免由于各個單位各自研制而缺乏溝通的情況，對于薄煤層綜采的總體設(shè)計來說，應(yīng)由一個單位負責牽頭。使采煤機能適應(yīng)較大傾角煤層開采的需要；(5)開發(fā)裝機功率更大的采煤機，提高采煤機可利用率和壽命的研究；(6)電器元件小型化的研究。筆者2000年即呼吁研制，2003年JOY宣布研制成功。3 薄煤層電牽引采煤機的結(jié)構(gòu)布置方式(1)非機載方式變壓器和電氣調(diào)速裝置均放在巷道內(nèi)，電氣調(diào)速裝置輸出的經(jīng)調(diào)制的電流由專用的拖拽長電纜傳送給機身上的行走電動機。3)懸臂方式如1K103型采煤機。德國SL300型電牽引采煤機，采用2個變頻器分別拖動2臺牽引電機的牽引系統(tǒng)，使牽引的控制和保護性能更加完善。如安德森公司EL系列機型上裝置Impac：t集成保護與監(jiān)控系統(tǒng)，Eichhof公司的Eichhof一數(shù)據(jù)匯集技術(shù)系統(tǒng)，JOY公司6LS型電牽引采煤機的JNA網(wǎng)絡(luò)信息中心等。多數(shù)采煤機單臺截割電機功率已達到6OO kW，7LS5采煤機單臺截割電機功率高達750 kW。20世紀70年代研制成功1ls多電機橫向布置直流電牽引采煤機后，又陸續(xù)研制了2IS7IS等型多電機橫向布置直流電牽引采煤機。(3)Development or to build up the electricity control the supervision function of is the research breaks down diagnosis and expert system, the works condition monitor, manifestation and information to deliver system and work the noodles adopt coal machine to automatically circulate control system and change from the orientation Pin electric circuit of electric leakage examination and protection technique, shake arm to automatically key up system etc.。Automatically manipulate。英文原文The Technical Situation and Development Trend of Electrical Haulage ShearersAbstract： In this paper，the technical development history and technical situation of electrical haulage shearersfor thin seam of China are reviewed，and the main technical parameters，general structure