外文翻译--刮板运输机.docx

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1、.Scraper conveyorTraction with scraper chain, in the bed of the delivery of bulk material conveyor called scraper conveyor. Scraper conveyor trough in the middle of the adjacent level can be limited vertical bending is called flexible scraper conveyor. One body in the face and transport interchange

2、roadway was 90-degree bending of the face conveyor set called "scraper conveyor corner." Coal face in the current, the scraper conveyor is not only the delivery of coal and materials, but also a shearer's orbit, so it into a modern coal mining process of the major equipment indispensab

3、le. Scraper conveyor functions to maintain continuous operation, production can be carried out normally. Otherwise, the whole coal face production status will be shown, so that disruption of the entire production. Scraper conveyor components by what? Various types of scraper conveyor of the main str

4、ucture and composition of the basic components are the same, it is by the head, middle and tail of three machine parts. In addition, for over conveyor equipment used hydraulic jacks and tight chain tight when the subsidiary components such as chains. Machine head by the head frame, motor，fluid coupl

5、ing, reducer, such as pieces of the composition and sprocket. The transition from the central trough, the central groove, scraper chain and the composition of such pieces. Rear scraper plane for the return of the device chain. Heavy-duty scraper conveyor tail and nose of the same are also provided w

6、ith power transmission devices, from the install location to distinguish under the name on the nose and head.Scraper conveyor of work?Scraper conveyor of the working principle and basic structure, and our country in the years 186-189 AD between the invention of "roll-over" - water is the s

7、ame keel. However, the use of scraper conveyor transported materials kibbling is the beginning of this century developed in the United Kingdom industry. Scraper conveyor early, simple structure and light, then it is only used to transport coal, manual loading of coal; low transport capacity，a maximu

8、m of only a few dozen tons per hour; conveyor only tens of meters in length;-power small，traction chain the intensity is not high. After years of improvement and development, with fully mechanized coal mining face of the scraper conveyor，in addition to coal, there are four functions: to the shearer

9、for orbit; to pull shift hydraulic support for fixed-point shift care ； clean up floating face coal; hoisting cables, pipes, tubes, etc. emulsion. Scraper conveyor in fully mechanized coal face shearer and hydraulic support and co-ordination work. Scraper conveyor of the working principle is to open

10、 the chute, as coal, waste or materials, such as pieces of the bear will be fixed in the chain scraper (scraper chain component), as components of traction. When the Department of nose after transmission, the chain wheel drive shaft rotating head，so that the cycle runs driven scraper chain stores al

11、ong the chute to move the head up to the unloading machine.Scraper chain sprocket for no class to bypass the closed cycle operation，the completion of the delivery of materials.Scraper conveyor What advantages and disadvantages?Scraper conveyor is the main advantages and disadvantages: advantages: 1，

12、the structure of a solid. Can withstand coal, waste or other materials of red, hit, hit, pressure and other external force.2，able to adapt to uneven floor coal face，bending over the need for vertical or horizontal can withstand the bending direction. 3, body short, easy to install. 4，can act as Shea

13、rer orbit.5，can reverse run, easy to deal with the accident at the end of chain. 6, fluid can be the fulcrum of the preceding night stand. Disadvantages:1，no-load power consumption of a greater power for the total about 30%. 2，not long-distance transmission.3，prone to swap chain, jumped the accident

14、 chain. 4, consumption of steel and more. Costs.Scraper conveyor through several stages of development?Scraper conveyor in the production of coal mine development and construction, more or less gone through three stages. The first phase of 30-40 years，is detachable scraper conveyor, which can only b

15、e a straight line in the face with the laying, with the face forward, need manual demolition, removal, assembly. Scraper chain plate, more than a single chain, such as V-type, SGD-11 type，SGD-20 type, such as low-power light scraper conveyor. The second stage is the early 40s from Germany to produce

16、 flexible scraper conveyor, with Shearer, metal stent with a mechanized mining. Cough such scraper conveyor to adapt to uneven floor and the level of convex curved surfaces, such as conditions shift, is not required for demolition，and coal have also increased, such as the Model SGW-44-type scraper c

17、onveyor is the phase of the representative products. Into the 60's as a result of the emergence of hydraulic support, in order to meet the needs of fully mechanized mining, scraper conveyor to the third phase of development，developed a cough sheathed high-power heavy-duty scraper conveyor bendin

18、g, such as SGD-630/75 type, SGD -630/180 type belonging to this stage is the product. To the 70's，with a large number of applications shearer, a SGW-40, SGW-44-type scraper conveyor can be curved to achieve the non-disintegration and sub-delivered non-stop since the transfer, transport capacity

19、to 200 t/h. Since the 80，s, will soon face the development of transportation equipment, due to the emergence of new types of coal cutter, scraper conveyor has a vastly different situation. Shearer to be a result of walking in the conveyor, conveyor requires not only strength to ensure stability in t

20、he work of Shearer, and to match production capacity with the shearer to keep the scraper conveyor of heavy development. Models are representative of SGW-150 and SGW-250 type. With the emergence of high-power shearer, a number of scraper conveyor of power has reached800 900 kW，the transport capacity

21、 of 2000 2500t / h, can yield 300 to adapt to face four million t / a production-scale requirements of 3. Scraper conveyor 90 during transport capacity in order to achieve the 3500t / h, from the corresponding Width 730 760mm increased to 980 1100mm, chain speed from lm/ s increased to about 1.57m /

22、 s, scraper conveyor has the power 1600kW.At present, with the coal face of increasing production capacity, scraper conveyor major trends are:1，big traffic. Countries have advanced the development of coal transport capacity of up to an hour 1500t (80's) 3500t (90s) of the scraper conveyor. 2，lon

23、g distance transport. Stage in order to reduce the coal mining area of the loss column, increase the length of face, the length of scraper conveyor has reached more than 335 meters.3, high-power electric motors. Electrical power has been developed to the single-speed motor of 525kW, two-speed motor

24、500/250kW. 4，long life. As a result of the use of large-diameter ring chain, an increase of the intensity of scraper chain, extended the life span of scraper conveyor, coal machine had reached more than 6,000,000 tons.New type of scraper conveyorDown the coal mining, or other useful minerals, and on

25、ly have value out of mine. Therefore, the process of coal production and transport is a very important part. Scraper conveyor coal shipment is the first link, the scraper conveyor of transmission capacity in the coal face to a large extent determines the capacity and efficiency. However, in the face

26、 of transport and underground tunnel, and roadway conditions are based on coal, according to the needs of the mining method，the integration of the requirements of the rock in the coal seam or cut out. Therefore, the underground transport is characterized by the conditions: cross-section of the roadw

27、ay in a limited run; line is staggered and tilted to connect; transport of goods in a variety of cargo; loading points often change, and some lines need to be extended or shortened; mechanized mining coal production, hours of high productivity; environmental humidity, and some workplaces have gas or

28、 coal dust. It can be seen that as a coal face and the coal mining area of roadway machinery - scraper conveyor in use，it is necessary to bear the pull, pressure，bending, impact, friction and corrosion and other effects, there must be sufficient strength, stif&ess, wear resistance and corrosion

29、resistance. Mode of transport because of its materials and scraper chain sliding in the bed, running resistance and wear great. However, the coal in the coal face, there is no better machine to replace it. Only from the structure, strength and manufacturing processes to look at improving constantly,

30、 making it more comprehensive, durable. This shows that the scraper conveyor is to transport coal and other minerals essential for the transport machinery.Scraper conveyor in the coal mine fully mechanized coal mining face major task is to take the coal shearer continuously reproduced to machine, to

31、 ensure that the fullymechanized coal mining face straight out of the coal.Scraper conveyor in coal mines，chemical mines, metal mines and power plants and other materials used to transport an important means of transport. It is from the central tank, chain，scraper and traction system. Among them, th

32、e central scraper conveyor trough is a major part of the central trough of steel has nearly a hundred years of history, in the course of a long-term use of the following shortcomings: the weight of large, time-consuming installation and removal; central trough is generally 6 15mm from the plate made

33、 by the larger deformation of the shock easy, more difficult to repair; poor corrosion resistance; poor wear resistance; the materials and the friction coefficient of the central trough, and the power scraper conveyor large part of consumption in the materials and the friction on the central trough,

34、 resulting in excessive energy consumption, increased investment. UHMWPE is used to create scraper conveyor in the plate, steel plate to resolve the problems, the plastic scraper conveyor. For small scraper conveyor can be modified to produce ultra-high molecular weight polyethylene scraper conveyor

35、. Shearer for the above large-scale walking scraper conveyor，it is necessary to adopt the method of composite steel with ultra-high molecular weight polyethylene as a lining, large-scale scraper conveyor to increase the wear resistance, long life, low friction coefficient, which lower power consumpt

36、ion and reduction of the traction drive system requirements, this large-scale scraper conveyor of great significance. This product is developed by the Shandong University of Science and Technology, can be used in coal mines, chemical mines, metal mines and power plants, such as transport of material

37、s.Function of the scraper conveyor generally 25 ° in the use of the following conditions. Scraper conveyor in use，it is necessary to bear the pull, pressure, bending，impact, friction and corrosion and other effects，therefore, must have sufficient strength, stiffiiess, wear resistance and corros

38、ion resistance. Mode of transport because of its materials and scraper chain sliding in the bed，transport and abrasion resistance are great. However, the coal in the coal face, there is no better machine to replace it. Only from the structure, strength and manufacturing processes to look at improvin

39、g constantly，making it more comprehensive, durable.:刮板输送机用刮板链牵引，在槽内运送散料的输送机叫刮板输送机。 刮板输送机的相邻中部槽在水平、垂直面内可有限度折曲的叫可弯曲 刮板输送机。其中机身在工作面和运输巷道交汇处呈90度弯曲设置的工作 面输送机叫“拐角刮板输送机”。在当前采煤工作面内，刮板输送机的作用不仅是运送煤和物料，而且 还是采煤机的运行轨道，因此它成为现代化釆煤工艺中不可缺少的主要设 备。刮板输送机能保持连续运转，生产就能正常进行。否则，整个釆煤工 作面就会呈现停产状态，使整个生产中断。 刮板输送机是由哪些部件组成？各种类型的刮

40、板输送机的主要结构和组成的部件基本是相同的，它由 机头、中间部和机尾部等三个部分组成。此外，还有供推移输送机用的液压千斤顶装置和紧链时用的紧链器等 附属部件。机头部由机头架、电动机、液力偶合器、减速器及链轮等件组 成。中部由过渡槽、中部槽、链条和刮板等件组成。机尾部是供刮板链返 回的装置。重型刮板输送机的机尾与机头一样，也设有动力传动装置，从 安设的位置来区分叫上机头与下机头。刮板输送机的工作原理是什么？刮板输送机刮板输送机的工作原理和基本结构，与我国在公元186至189年间发明的 “翻车”龙骨水车是相同的。可是，用刮板输送机运送散碎物料，是在本世 纪初出现于工业发达的英国。早期的刮板输送机，

41、结构简单轻便，那时它仅是运 煤之用，人工装煤；运输能力低，每小时最多只有几十吨；输送机长度只有几十 米；功率小，牵引链的强度也不高。经过多年的改进和发展，目前综采工作面用 的刮板输送机，除了运煤之外，还有四种功能：给釆煤机作运行轨道；为拉移液 压支架作托移固定点；清理工作面的浮煤；悬挂电缆、水管、乳化液管等。刮板 输送机在综采工作面与采煤机和液压支架配套工作。刮板输送机的工作原理 是，将敞幵的溜槽，作为煤炭、矸石或物料等的承受件，将刮板固定在链 条上（组成刮板链），作为牵引构件。当机头传动部启动后，带动机头轴上 的链轮旋转，使刮板链循环运行带动物料沿着溜槽移动，直至到机头部卸载。刮板链绕过链轮

42、作无级闭合循环运行，完成物料的输送。 刮板输送机有什么优缺点？刮板输送机主要优缺点是：jj 点、：1、结构、坚实。能经受住煤炭、矸石或其他物料的冲、撞、砸、压等外力作 用O2、能适应釆煤工作面底板不平、弯曲推移的需要，可以承受垂直或 水平方向的弯曲。3、机身矮，便于安装。4、能兼作采煤机运行的轨道。5、可反向运行，便于处理底链事故。6、能作液夜支架前段的支点。缺点：1、空载功率消耗较大，为总功率的30%左右。2、不宜长距离输送。3、易发生掉链、跳链事故。4、消耗钢材多。成本大。刮板输送机的发展经过几个阶段？刮板输送机在煤矿的生产与建设中的发展，大致经历了三个阶段。第 一阶段在30-40年代，是

43、可拆卸的刮板输送机，它在工作面内只能直线铺 设，随工作面的推进，需人工拆卸、搬移、组装。刮板链是板式，多为单 链，如V型、SGD-11型、SGD-20型等小功率轻型刮板输送机。第二阶段是 40年代前期由德国制造出可弯曲刮板输送机，它与釆煤机、金属支架配合 实现了机械化采煤。这种刮板输送机咳适应底板不平凸凹凸不平和水平弯 曲等条件，移设时不需拆卸，并且运煤量也有所增大，如当时的型号SGW-44 型刮板输送机就是这个阶段的代表产品。进入60年代由于液压支架的出现， 为了适应综采的需要，刮板输送机发展到了第三阶段，研制出大功率铠装 咳弯曲重型刮板输送机，如SGD-630/75型、SGD-630/18

44、0型等就是属于这 个阶段的产品。到了 70年代，随着采煤机的大量应用，出现了 SGW-40、SGW-44 型可弯曲刮板输送机，实现了不解体和不停运分段自移，运输能力提高到200 t/ho 80年代以来，工作面运输设备发展很快，由于各种新型釆煤机的出现，刮 板输送机己大为改观。因采煤机要在输送机上行走，不仅要求输送机强度大，保 证釆煤机工作稳定，且要与釆煤机生产能力相匹配，促使刮板输送机不断向重型 化发展。代表机型有SGW-150和SGW-250型。随着大功率采煤机的出现，一些刮 板输送机的功率已达800900 kW,运输能力达20002500t/h,能适应工作面 单产300400万t/a的生产

45、规模要求3。90年代刮板输送机的运输能力以达到 3500t/h,槽宽也相应的从730760rara增大到9801100mm,链速从lm/s左右 增大到1. 57m/s,刮板输送机的功率已达1600kW。目前，随着釆煤工作面生产能力的不断增大，刮板输送机主要发 展趋势是：1、大运输量。国外先进釆煤国家己经发展到小时运输能力高达1500t (80年代）3500t (90年代）的刮板输送机。2、长运输距离。为了减少釆区阶段煤柱的损失量，加大工作面的长度, 刮板输送机的长度已经达到335米以上。3、大功率电动机。电动机的功率已发展到单速电机达525kW,双速电 机500/250kW。4、寿命长。由于使

46、用大直径圆环链，增加了刮板链的强度，延长了刮 板输送机的寿命，整机过煤量高达600万吨以上。新型刮板输送机釆掘下来的煤或其它有用矿物，只有运出矿井才有使用价值。因此，运输是 煤炭生产过程中非常重要的一部分。刮板输送机是煤炭装运的第一个环节，因此, 刮板输送机的输送能力在很大程度上决定了采煤工作面的生产能力和效率。然 而，井下运输在工作面和巷道中进行，巷道是根据煤层条件，按幵釆方法的需要, 综合各种要求，在煤层或岩石中幵凿出的。因此，井下运输条件的特点是：在有 限断面的巷道内运行；线路是水平和倾斜交错连接；运输的货载品多种多样；装 载点常常变更，有的线路需经常延长或缩短；机械化釆煤连续生产、小时

47、生产率 高；环境湿度大，有的工作地点有沼气或煤尘。由此可见，作为为釆煤工作面和 采区巷道运煤的机械刮板输送机在使用中，要承受拉、压、弯曲、冲击、摩 擦和腐蚀等多种作用，必须要有足够的强度、刚度、耐磨和耐腐蚀性。由于它的 运输方式是物料和刮板链都在槽内滑行，运行阻力和磨损都很大。但是，在釆煤 工作面运煤，目前还没有更好的机械可代替它。只能从结构上、强度上和制造工 艺上不断研究改进，使它更加完善、耐用。由此可见，刮板输送机是煤炭等矿物 运输中必不可少的运输机械。刮板输送机在煤矿井下综采工作面中主要承担的任务是将采煤机采下的原 煤连续不断地运往转载机，确保综采工作面的原煤连续运出。刮板输送机是煤矿、

48、化学矿山、金属矿山及电厂等用来输送物料的重 要运输工具。它是由中部槽、链条、刮板及牵引系统组成。其中，中部槽 是刮板输送机的主要部分，钢制的中部槽已有近百年的历史，在长期的使 用过程中存在以下缺点：重量大，安装和搬运费时费力；中部槽一般 是由615ram的钢板制成，在受到较大的冲击时易变形，修复比较困难； 耐腐蚀性差；耐磨性差；物料与中部槽的摩擦系数大，刮板输送机的 功率大部分消耗于物料与中部槽的摩擦力上，造成了能耗过大、投资增加。 用超高分子量聚乙烯是制造刮板输送机的中板，可解决钢制中板所存 在的问题，得到塑料刮板输送机。对于小型刮板输送机可以通过改性超高 分子量聚乙烯来制造刮板输送机。对于

49、上面行走釆煤机的大型刮板输送机， 要采用钢塑复合的方法，用超高分子量聚乙烯作为衬里，提高大型刮板输 送机的耐磨性，延长使用寿命，降低摩擦系数，从而降低功率消耗并降低 对牵引、传动系统的要求，这对大型刮板输送机有巨大意义。本产品由山 东科技大学研制，可用于煤矿、化学矿山、金属矿山及电厂等物料运输。一般的刮板输送机能在25°以下的条件下使用。刮板输送机在使用中，要承 受拉、压、弯曲、冲击、摩擦和腐蚀等多种作用，因此，必需有足够的强度、刚度、耐磨性和耐腐蚀性。由于它的运输方式是物料和刮板链都在槽内滑行，运输 阻力和磨损都很大。但是，在采煤工作面运煤，目前还没有更好的机械可代替它。 只能从结构上、强度上和制造工艺上不断研究改进，使它更加完善、耐用。