PF輸送設(shè)備驅(qū)動(dòng)裝置設(shè)計(jì)【含13張CAD圖紙】
資源目錄里展示的全都有，所見(jiàn)即所得。下載后全都有,請(qǐng)放心下載。原稿可自行編輯修改=【QQ：401339828 或11970985 有疑問(wèn)可加】
Paper the development of mining machinery
It is learned that China's coal industry, "Eleventh Five-Year" period will be the size of new coal mines about 300 million tons, it will adjust the industrial structure, vigorously integration, transformation of the existing coal mines, the closure of small coal mines and eliminate backward production capacity, to speed up large-scale coal base and the modernization of the construction of large-scale coal mines, the mining machinery business to China's development provides an excellent opportunity.
First, the coal in China's energy structure to the important role of
Coal is China's major energy, economic and social development is an indispensable basis for the material. China's abundant coal resources, coal resources, the distribution of an area of about more than 60 million square kilometers, accounting for 6% of land area. According to the Third National prediction and evaluation of coal resources, coal resources in the country 5.57 trillion tons, the enormous potential of coal resources, coal resources in the world. Resources have been identified in the refined search is only 25% of the volume of resources, detailed investigation of resources and only 17%. Proved reserves reached 1.0202 trillion tons. Recoverable reserves of which 189.1 billion tons, accounting for 18%, per capita consumption is only 145 tons, which is lower than the world average. The State Council formulated the "energy and long-term development planning framework (2004-2020)" (draft) that "we should vigorously adjust and optimize the energy structure, adhere to the coal as the main body, as the center of power, oil and gas and all-round development of new energy strategy." In view of China's "more than coal, oil, gas (natural gas)" features, in the future for a long period of time, energy structure is still dominated by coal, coal in primary energy consumption accounted for around 70%. Coal in 2004 accounted for China's primary energy production more than 70% in China's energy structure dominated, plays a key role.
According to a well-off society in China's demand, the trend of coal consumption will be significantly increased. Users in the composition of coal consumption, electricity, metallurgy, building materials, chemical industry four coal consumption accounted for the total coal consumption in 1990 from 50% to 84% of in 2004, which accounted for 51.8% of electric power, metallurgy 11.64%, 27% in 2004 to 51 percent, nearly double.
? Second, the status quo of China's coal industry development
The 21st century, the rapid development of China's coal industry in 2000, coal 990 million tons nationwide in 2001 an annual output of 1104 million tons of coal in 2002, 1.38 billion tons in 2003, 1.667 billion tons. 2004 coal 1.956 billion tons, accounting for one-time energy production of 74.3%, coal was 1.891 billion tons for the sales, accounting for one-time national total energy consumption of 65%, significantly increased levels of productivity, industrial restructuring made significant progress. Some enterprises have begun to trans-regional, cross-sectoral joint industry, coal, electricity, and road, Hong Kong and aircraft industry began to take shape chain, forming a group leader in the domestic, the international competitiveness of a certain large corporations, such as Shenhua Group, Shanxi Coking Coal Group, such as Yanzhou Mining Group. Sharp increase in China's coal production has been of concern throughout the world.
Coal is the cornerstone of China's energy security. The coal industry is an important basic industry, China's coal production is the world's first coal-producing countries, now China's coal industry has already set out the design, construction, equipment and management of open-cut coal mine 10 million tons and the capacity of large and medium-sized mines . Modern fully mechanized mining equipment, mechanized excavation equipment and large-scale high-performance open-air stripping, mining, transportation and support of complete sets of equipment widely used in large and medium-sized coal mines. At the same time, China's coal mining technology and equipment in general low level of coal production is mechanized equipment, some of both mechanized and manual operation of the multi-level structure. Low level of technology and equipment. National non-mechanized coal mining 60%. Large and medium-sized state-owned key coal mines the level of the more advanced equipment, but the larger the degree of aging equipment; small mine the extremely low level of production technology and equipment, coal production process backward, excessive workers, low efficiency. To protect the supply of coal is the coal industry to strengthen macro-control of one of the key, and tap the potential of coal production to speed up the construction of large-scale coal bases, is an important measure. To this end, the only substantial increase in output of large and medium-sized coal mines in order to protect the premise of a stable supply of coal under the conditions of small coal mines to contain and eliminate the development of small coal mines, coal production and structural optimization of the completion of the adjustment. Since December 1998, the state of coal made a major readjustment of industrial structure, a number of closed 50,000 small coal mines, out of a number of backward production capacity, through macro-control, the situation improved coal production, supply and demand balance. China's coal production more than 25,000 enterprises, including large-scale enterprises account for about 60% in 2005, plans to close down more than 2,000 small coal mines.
Third, China's coal industry problems and with the international advanced coal-producing countries, the gap between
1, China's coal enterprises small scale, low industrial concentration to highlight China's coal enterprises characterized by small-scale, low efficiency, poor security conditions, low industrial concentration. According to statistical data analysis of the coal industry, the state-owned key coal mines in 2002 accounted for 52 percent of state-owned local coal mines accounted for 18%, 30% of township coal mines. Wells divided by type, large-scale mines accounted for 32%, 18% medium-sized mines, small mines (including the township coal mines) accounted for 48%. In 2004, the country has around 25,000 coal mines, more than 95% of small coal mines, coal mine production capacity of 30,000 tons less than about 40% of the mine, the coal industry, only 15% concentration is far below the world's major coal-producing countries. Advanced coal-producing countries, concentration of coal industry, the world's top 10 big companies, relying on core competitiveness, grow in size and strength, improve the global coal industry, the degree of decentralization. 2003, 10 major coal company's coal production accounted for about 18.81 percent of global production, there's five coal production more than 100 million tons, of which the Peabody ranked first company to reach 183 million tons, Rio Tinto has reached 143 million tons , four former U.S. coal production enterprises in the country accounted for 46.9 percent of total coal.
2, behind China's coal equipment, mechanization, low degree of automation, the lack of large complete sets of equipment. China's coal production base is weak, nervous for the production of state-owned coal mines accounted for nearly 50% of the total number of mines serious aging main production equipment, the extended active duty accounted for 30-40%, part of township coal mines with inadequate facilities, poor production conditions, and some machinery and equipment does not only artificial mining, coal-related laws and regulations do not meet the requirements of current resources destruction and waste. Part of the coal business there is a "thick disposable thin mining," "lose fat eating lean" waste of resources, such as the National Coal average recovery rate for the 30-35% of the resources-rich region, the recovery rate of small mine resources only 10 -15%. According to statistical data analysis of the coal industry in 2002, the focus of China's state-owned coal mining mechanization level of 77.78%, integrated coal mining mechanization for 62.98%, heading for the 81.15% level of mechanization, integrated mechanization level of wells 15.03%, the local state-owned coal lower the degree of mechanization. The current coal mining mechanization is only 42%, with the exception of large and medium-sized state-owned coal mining mechanization level to reach 75%, the majority of the low level of coal production techniques, poor equipment, low efficiency. Township coal mines in particular, is basically non-mechanized mining. Township coal mines in 2004 China's coal output accounted for 39% of the total output. Not suitable for use on top of 5.5 meters above the coal seam, it is necessary to adopt the use of full-time high is the most rational and effective method of coal mining, but not suited to the domestic high yield and efficiency of fully mechanized mining equipment. The United States and abroad Joy (JOY), Germany德伯特(DBT) and the German艾克夫(Eickhoff) companies have a mature high-coal mining high-wide high-yield, high-performance fully mechanized mining equipment. Shenhua Group annual production capacity of complete sets of equipment imported 10.85 million tons a breakthrough, a breakthrough face length of 300 meters, the longest of the face has more than 400 meters, face more than the total installed capacity of power 5000kw. And the international advanced coal-producing countries, coal production has a high-power heavy-based, automated, intensive, in accordance with the characteristics of environmental protection. Advanced to the power of the mining equipment, heavy-duty development, equipment reserve coefficient, and high reliability operation. DBT (Germany德伯特), JOY (United States long-yi) and Eickhoof (Germany艾克夫), such as mining equipment companies have automated features to create products. Federal No. 2 mine in the face with the realization of the automatic-shift aircraft. Australia achieved Batana automatically cut coal mine coal and aircraft with automatic shift. Especially information technology in the coal mines are widely used in production, advanced coal face extensive collection of equipment operating parameters and environmental safety testing information, in the face and focus on emerging Ethernet transmission to the ground through the computer, to achieve long-range transport and fault diagnosis . Transport systems, power supply systems and ventilation systems were not on duty. Focus on the implementation of long-range operations, video surveillance, supporting a personal inspection. Roadway layout of intensive, production systems and fewer links to achieve high concentration of production. Mine is usually a well, a production. Some of the longwall face advanced only 6 per class, of whom 2 shearer drivers, maintenance 1 person, 1 person operatives concentrated nose, the other 2 people to replace rest. Attach great importance to the improvement of working environment and human security. Computer monitoring of safety information, monitoring probes throughout the mine. With hydraulic support with automatic spray automatic spray planes and shift functions; shearer baffle above the installation to reduce the dust to enter the People's Bank of space. Shearer leeward side of the operation, virtually no work.
3, coal mine production safety accidents in China coal mine safety production, the major gas accidents, mine accidents, total number of deaths peaked in 2004, China produces about two billion tons of coal, about 6000 people killed, over several a substantial increase in coal production, millions of tons of coal or the decline in mortality. From 5.59 persons in 1994 dropped to 3.08 persons in 2004, the United States produces about one billion tons of coal 27-31 people died, mortality rate of about 0.039 million tons; Poland mortality rate of 0.09 million tons; in South Africa for 0.13 million tons of mortality; Russia's mortality rate was 0.34 million tons. China's mortality rate is one million tons to about 100 times the United States, Russia about 10 times, in India about 12 times, far exceeding the advanced coal producing countries. According to experts, the mine safety instruments, safety equipment are made in the design considerations, the majority of accidents are mine management, the real problem due to equipment less the event of an accident. Advanced coal-producing countries to rely on large, powerful fully mechanized mining technology and equipment has been completed from the ordinary to the fully mechanized coal mine mechanization and automation of the production of high-performance intensive transition. The construction of high efficient coal mines not only improve the efficiency of coal production, to achieve intensive coal production, and in the process of coal mine production safety monitoring, control and create conditions so as to effectively prevent and control the production of coal mine safety accidents. Advanced coal-producing countries attach great importance on safety in production, not only have a sound legal system for production safety, as well as the production of fine-strict security measures, strict access system for coal production, and monitoring the realization of a computer security information, monitoring probes throughout the mine to ensure the safety in production.
Fourth, the development of the coal industry's demand for mining machinery and equipment
1, the development trend of China's Coal Industry
???? According to the coal industry-related content development planning, "Eleventh Five-Year" period, China's new coal mine will be about 300 million tons, of which 200 million tons production. Countries in the "Eleventh Five-Year" period, the coal industry to adjust the industrial structure, vigorously integration, transformation, the closure of small coal mines and at the same time appropriate to speed up the construction of large-scale coal bases, started a number of modern large-scale coal mines, backward production replacement capacity. "Eleventh Five-Year" period of modern enterprise system, the coal industry to further improve the basic large-scale coal enterprise groups formed in 2010 to form a production capacity of 5-6 months億噸級(jí)large enterprise groups, 5-6 50 million tons large enterprise-class production capacity, national coal production will account for 60% of total production. The adoption of new technology and the old mine, the country will build 300 high yield and efficiency of mine, mine production of high-yield and efficient production of the country will account for about 50%. "Eleventh Five-Year" period, the state will build Shendong, Shanxi Province, Jindong, Mongolia East (Northeast), the Yunnan-Guizhou, Henan, Shandong, Shanxi, Lianghuai Huang Long (Huating), wing, the Ningdong, Shanbei 13 large coal bases, these bases of reserves, accounting for more than 70% of reserves, as the planning and construction of coal supply to the heart. Initial forecast of coal demand for the country: in 2010 to 25-27 million tons in 2020 to 30-32 million tons, both the energy demand more than 60%. According to the relevant parts of statistics, in 2004 the state-owned key coal mines 922 million tons of coal production, more than 50 percent of its approved capacity of more than a serious shortage of coal production capacity. As measured by 2020, new and under construction production capacity of state-owned coal mine about 710 million tons. If the output of small coal mines in China still maintain the current 600 million tons, according to the high-end programs to forecast demand, the next 20 years China's coal production capacity needs to add 1.7 billion tons, with an average annual 85 million tons; according to the needs of low-end forecast program, the next 20 years China's coal production capacity needs to add 1.3 billion tons, with an average annual 65 million tons.
2, on the demand for mining machinery and equipment
"Eleventh Five-Year" period, the coal industry, the technological level of production will be markedly improved. 140 countries will build a modern and efficient coal mine safety, the state will increase support for coal mine construction projects, and there have been 17 coal projects, issued by the State Development Bank loan commitments, will be more than 100 high-end S & P mining face upgraded to fully mechanized coal mining face, more than 100 S & P upgraded to high-grade coal face mining face. In this way, China's large coal mining mechanization level to reach 95%. The degree of mechanization and medium-sized coal mines will reach more than 80%; large-scale coal mining equipment, the domestic advanced level reached 20%, and equipment of international advanced level reached 6%, medium-sized domestic coal mining equipment reached the advanced level of 10 percent small and medium-sized coal mine mechanization, the degree of semi-mechanized more than 30%. On that analysis, the rapid growth of coal demand, the coal mining mechanization indicators will be a breakthrough for the development of coal mining equipment will provide a broad market prospects.
(1) the focus of fully mechanized mining equipment underground
China's coal mining more than 90% of workers exploitation wells, well production workers accounted for the dominance of coal mining. For the rapid increase in China's overall level of equipment, should be guided by the concept of scientific development, to take great-leap-forward development. In the "Eleventh Five-Year" period should be based on Nissan 2.5-3 million tons (about 10 million tons annual output) of the fully mechanized mining equipment made a breakthrough into the country to achieve fully mechanized mining equipment made to promote China's industrial development and mining machinery .
Expected from 2004 to 2020, an annual increase of fully mechanized coal mining face 30 sets of complete sets of equipment, general mining face 50 sets of complete sets of equipment, upgrading of equipment each year is about one-sixth of the existing base. Rough estimates, coal mining equipment in 2010 the annual demand will reach about 500 sets. High yield and efficiency of fully mechanized mining technology is the core of the comprehensive mechanization of underground mining face conveyor equipment, major coal cutter, scraper conveyor, belt conveyor and hydraulic support. Much-needed research and development of electrical traction coal cutter: the total power installed capacity of about 2000kw, power supply voltage of 3.3 KV, mining height range of 5-6m, production capacity of 3000t / h or so.
Heavy-duty scraper conveyor: transmission capacity 3000 - 5000t / h, the length of the laying of 250-400m, chain speed 1.4m / s, installed power of 3 × 700 or 2 × 1000kw, power supply voltage of 3.3 KV.
Hydraulic support: the greatest resistance to the work of 12000 KN, the largest bore column ф480mm, support a high degree of 6m, aircraft pitch 1.75-2m, stand down or time-shift 8-12s, the use of electro-hydraulic control system.
Large belt conveyor: Installed Power 1500-4000KN, voltage 3.3KV, bandwidth ≥ 1.4m, with velocity ≥ 5m / s, volume ≥ 5000t / h, distance of more than 50000m, rollers more than 50,000 hours life, reducer more than 70,000 hours life.
(2) underground mechanized digging equipment
Fully de-sac the current level of mechanization is relatively low, only 12.81 percent, far behind the development of fully mechanized coal mining mechanization, which although large boring machine, but still higher than the overall technical level of the advanced international level there is a wide gap between.
Advanced research and development to be boring machine: its cutting power for more than 300kw, cut side up and cut off 42
收藏