外文翻译--刮板运输机.doc
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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 r
2、oadway 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 shearers orbit, so it into a modern coal mining process of the major equipment indispensable. Scraper convey
3、or 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 structure and composi
4、tion 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 coupling, reducer, such
5、 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 with power transmis
6、sion 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 same keel. However, the use of
7、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 maximum of only a few dozen tons per
8、 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 for orbit; to pull shift hydra
9、ulic 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 the chute, as coal, waste or
10、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 along the chute to move the head
11、 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,the structure of a solid. Can
12、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 Shearer orbit.5,can reverse run, e
13、asy 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 chain. 4, consumption of stee
14、l 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 be a straight line in the face
15、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 flexible scraper conveyor, wi
16、th 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 conveyor is the phase of the re
17、presentative products. Into the 60s 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 bending, such as SGD-630/75 type, SGD -63
18、0/180 type belonging to this stage is the product. To the 70s,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 to 200 t/h. Since the 80,s, will soon fa
19、ce 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 the work of Shearer, and to match product
20、ion 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 of 2000 2500t / h, can yield 300 to ada
21、pt 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 / s, scraper conveyor has the power 1600k
22、W.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 (80s) 3500t (90s) of the scraper conveyor. 2,long distance transport. Stage in order to reduc
23、e 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 500/250kW. 4,long life. As a result of the us
24、e 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 only have value out of mine. Therefore, the pro
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