刮板輸送機(jī)外文翻譯-其他專業(yè)-在線瀏覽
2025-03-24 07:45本頁面
【正文】 3, prone to swap chain, jumped the accident 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 3040 years, is detachable scraper conveyor, which can only be 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 Vtype, SGD11 type, SGD20 type, such as lowpower light scraper conveyor. The second stage is the early 4039。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 highpower heavyduty scraper conveyor bending, such as SGD630/75 type, SGD 630/180 type belonging to this stage is the product. To the 7039。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 the work of Shearer, and to match production capacity with the shearer to keep the scraper conveyor of heavy development. Models are representative of SGW150 and SGW250 type. With the emergence of highpower shearer, a number of scraper conveyor of power has reached 800 ~ 900 kW, the transport capacity of 2021 ~ 2500t / h, can yield 300 to adapt to face four million t / a productionscale 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 1m / s increased to about / 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 (8039。s) of the scraper conveyor. 2, long 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, 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 capac
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