【正文】 sign life span:The wheel gear 12500 hs, the bearings is 2000030000 hses, the electrical engineering insulates the life span 44000 hs, and the roller adopts coal 640,000 coal machine to greatly fix a period for 2 years, the coal measure 3005,000,000 country requests that adopting coal machine coal measures a 1502,000,000 ts but not and greatly fixs, the margin is very big. medium high pressure power suppliesAlong with adopt coal machine to pack the machine power significant exaltation, the work noodles continuously lengthens, the whole work noodles capacity works over the 5000 kWs the noodles length attain 300 order to reduce power line road to exhaust, quality and electrical engineering function of the exaltation power supply, high pressure power supply in the widespread main power supply grade has a 2300, 3300, 4160 and 5000 V etc.. supervisions protection system intelligence turnThe modern electricity leads to adopt the intelligence that the coal machine all has establishment in the microprocessor foundation to turn supervision, monitor and protection system, can carry out to hand over with each other type person machine dialogue, wireless control from a distance, the work condition monitor and appearance show, the data collect to save and deliver, health(break down) diagnosis and with early warning, auto control, automatically key up etc. various functions, adopt the coal machine maintenance quantity least by assurance, the utilization is the tallest, and can carry out to press a support with liquid and work the noodles transport the information of machine to hand over with each other with allied move a control etc. as Anne virtuous Sen pany EL series the model up equips Impac:The t integrates protection and supervision system, the Eichhof of the Eichhof pany a data gathers together technique system, the JOY pany 6 LS type the electricity lead the JNA network information center of adopt the coal machine etc..Supervise and control protection system intelligence to turn main function:(1)Load the control passes the monitor that the piece mows electrical engineering electric current, adjust to adopt lead of coal machine speed and make to adopt coal machine under the different work condition with superior turn of the parameter carry on a work and promise to spread to move system to don39。Automatically manipulate。s adopting the coal machine long range munication and work noodles concentration a control technique be the marking of modern mineral well.(7)Expert system and breakdown diagnose data and information from the examination and movement parameter of the supervision, function with former machine maintenance, usage the circumstance carry on a parison, carry on diagnosis to the healthy movement of machine, can also to particular mistake and remend the project provide risk valuation. electricities lead system to adjust to soon develop toward the exchangesThe electricity leads to adopt a lead of coal machine39。(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.。電牽引采煤機(jī)以其性能參數(shù)優(yōu)良、可靠性高、自動(dòng)化程度高、操作方便、監(jiān)控保護(hù)及檢測功能完善、經(jīng)濟(jì)效益高等優(yōu)點(diǎn)被迅速推廣使用。20世紀(jì)70年代研制成功1ls多電機(jī)橫向布置直流電牽引采煤機(jī)后，又陸續(xù)研制了2IS7IS等型多電機(jī)橫向布置直流電牽引采煤機(jī)?？傮w來看，俄羅斯的電牽引采煤機(jī)功率較小，直流牽引，性能參數(shù)較低。多數(shù)采煤機(jī)單臺(tái)截割電機(jī)功率已達(dá)到6OO kW，7LS5采煤機(jī)單臺(tái)截割電機(jī)功率高達(dá)750 kW。(6)提高采煤機(jī)可靠性和可利用率。如安德森公司EL系列機(jī)型上裝置Impac：t集成保護(hù)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(jī)的JNA網(wǎng)絡(luò)信息中心等。引進(jìn)的6LSSL50o、SL30o采煤機(jī)都實(shí)現(xiàn)了數(shù)據(jù)遠(yuǎn)程傳輸、集中監(jiān)控和部分集中控制。德國SL300型電牽引采煤機(jī)，采用2個(gè)變頻器分別拖動(dòng)2臺(tái)牽引電機(jī)的牽引系統(tǒng)，使?fàn)恳目刂坪捅Ｗo(hù)性能更加完善。為了降低采高下限，加大過煤空間，具有代表性的機(jī)身布置方式有爬底板、騎輸送機(jī)和懸臂三種方式。3)懸臂方式如1K103型采煤機(jī)。(3)截割電動(dòng)機(jī)的布置方式1)截割電動(dòng)機(jī)布置在機(jī)身上。3 薄煤層電牽引采煤機(jī)的結(jié)構(gòu)布置方式(1)非機(jī)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(jī)身上的行走電動(dòng)機(jī)。10—15a內(nèi)，采高下限≥1m的薄煤層電牽引采煤機(jī)會(huì)繼續(xù)采用傳統(tǒng)的內(nèi)牽引；采高下限≤1．0m的薄煤層電牽引采煤機(jī)可能改用外牽引，懸臂或爬底板方式，機(jī)身采用多電機(jī)布置，滾筒內(nèi)沒有搖臂行星頭有利裝煤。筆者2000年即呼吁研制，2003年JOY宣布研制成功。(7)提高自動(dòng)化程度。使采煤機(jī)能適應(yīng)較大傾角煤層開采的需要；(5)開發(fā)裝機(jī)功率更大的采煤機(jī)，提高采煤機(jī)可利用率和壽命的研究；(6)電器元件小型化的研究。重點(diǎn)是提高采煤機(jī)電控系統(tǒng)抗干擾、抗熱效應(yīng)的能力；(3)開發(fā)或增強(qiáng)電控系統(tǒng)的監(jiān)控功能。薄煤層采煤機(jī)、輸送機(jī)、支架應(yīng)增強(qiáng)配套性，避免由于各個(gè)單位各自研制而缺乏溝通的情況，對(duì)于薄煤層綜采的總體設(shè)計(jì)來說，應(yīng)由一個(gè)單位負(fù)責(zé)牽頭。采用中壓開關(guān)磁阻電機(jī)調(diào)速的MG132／320WD型電牽引采煤機(jī)已經(jīng)鑒定，并推廣應(yīng)用。中壓機(jī)載調(diào)速是薄煤層電牽引采煤機(jī)的發(fā)展方向。如果是單電機(jī)，可能由于電機(jī)直徑過大，影響到過煤間隙，或電機(jī)過長，則受到機(jī)道寬度的限制。優(yōu)點(diǎn)是體積小，功率大，可靠性高，維修方便；缺點(diǎn)是牽引鏈有脈動(dòng)，牽引、截割動(dòng)載荷都較大。以MG2X100／456為例，機(jī)面高度853mm，輸送機(jī)上方的機(jī)身高度380mm，過煤高度310mm(中板高度163mm)；輸送機(jī)上方的搖臂電機(jī)護(hù)套處過煤高度還要小一些。波蘭電牽引采煤機(jī)均采用橫向布置方式。交流牽引正逐步替代直流牽引，成為今后電牽引采煤機(jī)的發(fā)展方向。它包括工作面設(shè)備的運(yùn)行參數(shù)與地面控制中心的數(shù)據(jù)傳輸、運(yùn)行狀態(tài)和位置的監(jiān)控，地面控制中心對(duì)井下設(shè)備工作運(yùn)行的操作控制，也就是實(shí)現(xiàn)無人工作面的最終目的。主要供電等級(jí)有2300、3300、4160、5000V等。(5)截割功率增大，支架隨機(jī)支護(hù)的實(shí)現(xiàn)，加大滾筒截深。3 技術(shù)特點(diǎn)與發(fā)展趨勢(shì)3．1 裝機(jī)功率增大。采煤機(jī)截深由630 171111提高到800—1 000 mm. 俄羅斯前蘇聯(lián)20世紀(jì)70年代研制出K128II．直流電牽引采煤機(jī)后，又相繼研制成功多種直流電牽引采煤機(jī)。90年代，在Electra系列機(jī)型基礎(chǔ)上，加大功率，改進(jìn)控制系統(tǒng)，開發(fā)了EL系列交流電牽引采煤機(jī)，主要機(jī)型有EL600、EL1000、EL1500、EL3000型。80年代后期出現(xiàn)了交流電牽引采煤機(jī)。from the 125 mms l 75 mms.4 The local electricity