【正文】
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 following shortings: ① the weight of large, timeconsuming installation and removal。 loading points often change, and some lines need to be extended or shortened。 line is staggered and tilted to connect。s) 3500t (9039。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。s from Germany to produce 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 SGW44type scraper conveyor is the phase of the representative products. Into the 6039。 clean up floating face coal。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。 low transport capacity, a maximum of only a few dozen tons per hour。 Scraper conveyor Traction 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 roadway was 90degree 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 shearer39。s or