【正文】 重點(diǎn)是研究故障診斷與專家系統(tǒng)、工況監(jiān)測(cè)、顯示與信息傳輸系統(tǒng)、工作面采煤機(jī)自動(dòng)運(yùn)行控制系統(tǒng)、自適應(yīng)變頻電路的漏電檢測(cè)與保護(hù)技術(shù)、搖臂自動(dòng)調(diào)高系統(tǒng)等；(4)開(kāi)發(fā)可四象限運(yùn)行的礦用交流變頻調(diào)速裝置。如輸送機(jī)中部槽高度和機(jī)頭機(jī)尾高度降低，無(wú)鏈牽引軌道給截割電機(jī)讓點(diǎn)空間，采煤機(jī)機(jī)身頂面和支架頂梁底面平行，液壓支架人行道便于通行等等，都應(yīng)有一個(gè)整體的考慮。中壓交流變頻調(diào)速的采煤機(jī)尚未研發(fā)，其實(shí)它與中壓開(kāi)關(guān)磁阻調(diào)速是用同樣的高壓IGBT管(3300V)。3．6 無(wú)鏈牽引向齒輪一齒軌式演變隨著牽引力的不斷增大，銷輪一齒軌式無(wú)鏈牽引已經(jīng)淘汰，齒輪一鏈軌式無(wú)鏈牽引也已使用不多，現(xiàn)在采煤機(jī)無(wú)鏈牽引正逐步趨向于采用齒輪一齒軌式無(wú)鏈牽引，這是一種從齒輪一銷軌式演變而來(lái)的無(wú)鏈牽引結(jié)構(gòu)， 圓柱銷被齒軌所取代，焊接結(jié)構(gòu)改成了整體精密鑄造或鍛造， 寬度增大， 節(jié)距由125 mm增加到l75mm.3. 7薄煤層電牽引采煤機(jī)的技術(shù)發(fā)展趨勢(shì) (1)降低采高下限。如果雙電機(jī)并聯(lián)，缺點(diǎn)是搖臂寬而短，會(huì)影響自開(kāi)缺口，兩個(gè)電機(jī)功率不平衡。對(duì)于≤1In、特別是≤O．8m的煤層，外牽引采煤機(jī)可能比內(nèi)牽引采煤機(jī)、刨煤機(jī)更具競(jìng)爭(zhēng)力。顯然對(duì)于騎輸送機(jī)的薄煤層采煤機(jī)來(lái)說(shuō)，要求機(jī)面高度800mm、采高下限1．1In是困難的。薄煤層電牽引采煤機(jī)的總體結(jié)構(gòu)(1)機(jī)身的布置方式機(jī)面高度、機(jī)身厚度、中板高度和過(guò)煤高度是互相制約的。早期的交流牽引均采用一個(gè)變頻器拖動(dòng)2臺(tái)牽引電機(jī)，變頻器對(duì)電機(jī)的性能參數(shù)難以準(zhǔn)確檢測(cè)，控制和保護(hù)功能無(wú)法完全發(fā)揮。采煤工作面作為關(guān)鍵的移動(dòng)設(shè)備，采煤機(jī)要有運(yùn)行數(shù)據(jù)(包括故障信息)遠(yuǎn)程傳輸技術(shù)、位置檢測(cè)技術(shù)的支持，在此前提下方可能實(shí)現(xiàn)地面對(duì)井下設(shè)備運(yùn)行數(shù)據(jù)的檢測(cè)、管理，乃至實(shí)現(xiàn)集中控制(或監(jiān)控)。3．3 監(jiān)控保護(hù)系統(tǒng)智能化現(xiàn)代電牽引采煤機(jī)均裝有建立在微處理機(jī)基礎(chǔ)上的智能化監(jiān)控、監(jiān)測(cè)和保護(hù)系統(tǒng)，可以實(shí)現(xiàn)交互式人機(jī)對(duì)話、無(wú)線電遙控、工況監(jiān)測(cè)及狀態(tài)顯示、數(shù)據(jù)采集存儲(chǔ)及傳輸、健康(故障)診斷及與預(yù)警、自動(dòng)控制、自動(dòng)調(diào)高等多種功能，以保證采煤機(jī)維護(hù)量最小，利用率最高，并可實(shí)現(xiàn)與液壓支架、工作面輸送機(jī)的信息交互和聯(lián)動(dòng)控制等功能。l0年前，截深大多是630—700 Inll1，現(xiàn)普遍采用1 000—1 200眥截深，個(gè)別達(dá)到1 500 Infn截深。性能參數(shù)提高(1)單臺(tái)截割電機(jī)功率均在400 kW 以上。9o年代開(kāi)發(fā)了K一8國(guó)型等交流電牽引采煤機(jī)。在EL系列機(jī)型上裝置的Impact集成保護(hù)及監(jiān)控系統(tǒng)，具有負(fù)荷控制、機(jī)器監(jiān)控、采煤機(jī)自動(dòng)定位、自動(dòng)調(diào)高、區(qū)域控制、智能化安全連鎖、隨機(jī)故障診斷、數(shù)據(jù)傳輸?shù)裙δ堋?0年代，開(kāi)發(fā)出集電子、微電子、信息管理以及計(jì)算機(jī)智能技術(shù)于一體的大功率電牽引采煤機(jī)，如美國(guó)JOY公司的LS系列、英國(guó)LongAirdox公司的Electra、SL系列，德國(guó)Eickhof公司的EDW、SL系列， 日本三井三池制作所的MCLE—DR系列等電牽引采煤機(jī)。(2)The research dependable tiny machine electricity controls is the exaltation adopts coal machine the electricity controls the system anti interference, anti hot effect of ability。(6)The data deliver, agreeable slot control and ground supervision39。(5)Circulate appearance supervision and manifestation adopts coal machine a data to collect systemCan collect machine parameter:If the Eickhof pany SL series adopts coal machine a material to have MICOS68 mineralses to use tiny machine system, main course 10 single submenus include to adopt coal luck to go appearance。s in 20 centuries develops a K128 direct current after lead adopt coal machine develops to succeed various direct currents to lead to adopt coal machine one after another age of the o developped K a 8 etc. alternate currents to lead to adopt coal consider, the electricity of Russia leads to adopt coal machine power smaller, the direct current lead and the function parameter is lower.2 The local electricity leads to adopt the coal machine development general situationIn recent our country electricity led to adopt develop of coal machine to obtain a substantial progress with development, carry on two developments in digesting to absorb abroad to usher in to adopt the coal machine technical foundation and owned many have an independent intelligent property right of change a product, at our country coal mine prehensive the mechanization adopt coal work noodles, coal science studies total Shanghai branch in the hospital and Poland cooperates, after the local initiative develop successful our country39。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，serialization anddevelopment trend of such sheares are introduced．Keywords： thin seam；shearer；electrical haulage；multi—motor driving；transverse arrangementGerman Eickhoff pany and American JOY pany, the mid 7039。s first adoption exchanges change Pin adjust soon technical thin coal seam to climb scaleboard to adopt coal machine, branch in Shanghai again successively develop succeed cut to mow the alternate current that the electrical engineering lengthways sets out to lead to adopt coal machine and cut to mow electrical engineering horizontal set out of be applicable to in thick with the alternate current of thinner coal seam lead to adopt coal machine, and succeed applied at the Jin city, Huai south, Xu2 Zhou, big equal mineral duty bureau.3 Technique characteristics and develop trend pack machine power to function parameter raise(1)The single set piece mows electrical engineering power all in the 400 kWs most adopts the coal machine single set piece to mow electrical engineering power to already arrive 6 OO kW, the 7 LS5s adopts the coal machine single set piece to mow electrical engineering power to be up to 750 kWs.(2)Lead power all above in the 80 kWs, biggest already 220 kWs.(3)Always pack machine power more than one 000 kWs, reach to one 94 OkWs such as the 7 LS5s, the EL3000 always packs machine power as tallest as 2000 kWs.(4)Lead speed and lead dint to significantly the speed l 525 ms/min, lead the dint 500 kNs lead speed ms/rain(SL300), biggest lead dint 998 kNs.(5)Cut to mow power aggrandizement, the support random pays to protect of realization, the enlargement roller cuts l is 0 year agos and cut deeply mostly is a 630700 Inll1s, widespread now adopt 10001200 Zis to cut deeply, separately attain 1500 Infnses to cut deeply.(6)The exaltation adopts the coal machine credibility with can abroad adopts coal machine a dollar a parts a de