【正文】 0世紀(jì)9o年代初期水平。由于裝機功率增大，電動機、變壓器、變頻器等設(shè)備的體積也相應(yīng)增大，為滿足整機結(jié)構(gòu)布置緊湊的要求，必須研究設(shè)備小型化的技術(shù)途徑。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)。(6)提高設(shè)備成套性。(3)發(fā)展中壓機載。采用中壓電磁調(diào)速、中壓開關(guān)磁阻電機、中壓交流變頻調(diào)速時，沒有牽引變壓器，便于機載，缺點是電磁調(diào)速的性能一般化，開關(guān)磁阻電機的中壓調(diào)速雖已國產(chǎn)化，但可靠性有待提高。3)截割電動機布置在搖臂采空側(cè)。其牽引部布置在工作面輸送機的機頭機尾處，類似于拖鉤刨煤機，由采空側(cè)的圓環(huán)鏈牽引。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。德國進入20世紀(jì)9o年代，開發(fā)了橫向布置的SL系列電牽引采煤機。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)。如Eickhof公司SL系列采煤機裝備有MICOS68礦用微機系統(tǒng)，主菜單10個子菜單包括采煤機運行狀態(tài)；自動操縱；截割部參數(shù)；牽引部參數(shù)、液壓系統(tǒng)參數(shù)、各檢測點溫度、各電動機電流；水量、水壓；控制系統(tǒng)軟、硬件型號；診斷、預(yù)警(口令)等，多數(shù)保護項目可以通過人機交互方式予以屏蔽；(6)數(shù)據(jù)傳輸、順槽控制及地面監(jiān)控采煤機遠程通訊和工作面集中控制技術(shù)是現(xiàn)代化礦井的標(biāo)志。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。最大牽引速度54．5 m／rain(SL300)，最大牽引力998 kN。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。 波蘭KOMAG采礦機械化研究中心波蘭在與中國合作研制成功KSE一344型薄煤層交流電牽引采煤機的基礎(chǔ)上，陸續(xù)開發(fā)了KSE一360、KSE一700、KSE一800RW／2BP、KSE一535S／2BP、KSE1000型等交流電牽引采煤機?！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。此后，世界上各主要采煤機研究制造公司均對電牽引采煤機進行了大量的研究開發(fā)。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。Diagnosis, early warning(password) etc., the most protection item can hand over a way to with each other shield through person39。(4)Automatically keying up a control will have the coal rock boundary of certain resolution to identify to spread a feeling machine to bine a calculator control and constitute a coal rock boundary to spread feeling device and coal rock boundary to identify already apply to physically or just be placed in research at the production currently with 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。Equip and 6 LS5 type the in general use JNA machine carry calculator information center and have person39。s advantage be quickly expanded an usage.1 The foreign electricity leads long to adopt the coal machine development general situation Eickhof panyAfter 1976 developped successful direct current to lead to adopt coal machine, it was basic to stopped a liquid to press to lead a development research of adopt the coal machine and continuously developped various form electricities to lead to adopt coal SL series that the age develop is horizontal to arrange the alternate current lead to adopt coal machine, cut to mow electrical engineering to arrange in shaking them, the S type electricity leads to adopt coal machine to pack machine power to reach to one 580 kWs, biggest lead dint 998 type electricity leads to adopt coal machine to always pack machine power one 018 kWs, the adoption double change once the Pin machine drag along one system, biggest lead speed to reach to ms/rai system the system have to hand over with each other a type a person the machine dialogue, equipments healthily forecasts, the online control, data deliver etc. function. :British LongAirdox panyAfter 1984 developped success the first set cut to mow electrical engineering to arrange at many decorations with horizontal electrical engineerings of shake the arms get Electra550 type direct current led to adopt coal machine, at its foundation top enlargement power, and then develop into an Electra1000 type direct current to lead to adopt coal , on the model foundation of the Electra series, enlargement power, the improvement controls system, developped EL series alternate current to lead to adopt coal machine and the main model contains EL600, EL1000, EL1500, EL3000 EL series model up equip of the Impact integrate protection and supervise and control system and have burden to control, machine supervision, adopt coal machine to automatically position, automatically key up, district control, the intelligence turn safe catena and random break down diagnosis, data to deliver etc. function. JOY pany207039。(2)Work noodles fixed position control39。Lead a parameter, liquid presses system parameter, each examination to order temperature, each electric motor electric current。s of Japan 20 centuries the first set alternate current lead to adopt coal machine and municate that adjusting soon system is advanced with its technique, dependable sex Gao, the maintenance manage in brief, the price cheap etc. advantage, drive quick expansion big power e