刮板輸送機(jī)外文翻譯-其他專業(yè)(完整版)
【正文】 nce 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, highpower electric motors. Electrical power has been developed to the singlespeed motor of 525kW, twospeed motor 500/250kW. 4, long life. As a result of the use of largediameter 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 conveyor Down the coal mining, or other useful minerals, and only 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 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: crosssection of the roadway in a limited run。 to pull shift hydraulic support for fixedpoint shift care 。 low transport capacity, a maximum of only a few dozen tons per hour。s, with a large number of applications shearer, a SGW40, SGW44type scraper conveyor can be curved to achieve the nondisintegration and subdelivered nonstop since the transfer, transport capacity to 200 t / h. Since the 8039。 environmental humidity, and some workplaces have gas or 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, stiffness, wear resistance and corrosion 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, making it more prehensive, 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 ensure that the fully mechanized 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, the 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 longterm use of the follo
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