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Yang Minghua, deputy general manager of Northern Heavy Industry Group's conveyor equipment branch, introduced belt conveyors as large-scale continuous conveying equipment for bulk materials, which are widely used in large-scale open-pit coal mines, large open-pit metal mines, port terminals, thermal power plants, iron and steel, nonferrous metals, building materials, and chemical industry. The food and other industries are important and indispensable technological equipment for modern industry and modern logistics. In the early 1980s, China's belt conveyor industry was only able to produce TD75 belt conveyors, so matching cotton canvas conveyor belts could meet the requirements, but at that time, the belt conveyor products in national key projects were all from abroad. import. In the mid-1980s, China's belt conveyor industry began to introduce advanced foreign technology and special manufacturing equipment. The level of design and manufacturing has been qualitatively improved and gradually replaced imported products. In recent years, China's belt conveyors have reached the international advanced level in general, and in addition to meeting the needs of domestic project construction, they have started batch exports, and their design and manufacturing capabilities, product performance and product quality have been recognized by the international market. As the carrying and traction members, the conveyor belt is one of the main components in the belt conveyor, so it must meet the requirements of domestic large-scale projects and higher international standards.
Yang Minghua said that the current key products for the development of belt conveyors include long-distance, high-volume, high-speed belt conveyors, horizontal and space curve off-road belt conveyors, open-pit mines used mobile belt conveyors, large-scale down Belt conveyors, self-retractable belt conveyors at the end of the retractable conveyor, belt conveyors for conveyor belts, conveyor belt conveyors at large dip angles, and wire rope traction belt conveyors. The key technologies that have been researched and developed include the dynamic analysis and design technology of belt conveyors, the development of intelligent controllable drive systems, the development of new wear-resistant materials at material transfer points, the optimization design technology for steel structures, energy-saving technologies for belt conveyor systems, environmental protection technologies, and bulk materials. Transportation system integration and engineering design technology. He suggested that the conveyor belt enterprises pay attention to the core technology development of the supporting host industry.
Yang Minghua believes that although the technical capacity and product quality of domestic conveyor belt companies have been qualitatively improved, some enterprises can also produce various kinds of fabric cores and steel cord conveyor belts according to domestic and international standards. The quality of their products has been obtained by international high-end users. The recognition, but the conveyor belt industry should also focus on the following issues:
The first is the adoption of international advanced standards. In recent years, the export volume of belt conveyors in China has been increasing. Foreigners generally do not accept Chinese standard products and require the use of standards such as ISO, Germany, or the United States. Therefore, conveyor belt companies must collect and digest relevant international standards and conduct production, inspection, packaging and after-sales services according to foreign technical standards.
The second is to strengthen the research of special conveyor belts. It is necessary to continuously increase the variety of product specifications and improve product quality, and strengthen the development of high-temperature conveyor belts, cold-resistant conveyor belts, round pipe conveyor belts, ripstop conveyor belts, high wear-resistant conveyor belts, and high-strength steel wire rope conveyor belts of ST5000 and above. For example, in order to adapt to the transportation of high abrasive materials and improve the service life of the conveyor belt, foreign companies have developed a surface-resist material with a higher wear resistance than the German standard, and the wear amount reaches 50 to 70 cubic millimeters.
The third is to develop low resistance energy-saving conveyor belts. At present, low running resistance energy-saving conveyor belts have been developed abroad, and are used on long-distance conveyors. Generally, the running belt resistance coefficient of the conveyor belt is 0.02-0.025, while the energy-saving conveyor belt is around 0.016, which can reduce the operating energy consumption by about 25%. . It is understood that Goodyear's newly developed Easyrider conveyor belt is to change the formula, so that the conveyor belt as a tire to reduce rolling resistance, can save 12% of power consumption a year, thus helping users save energy.
Fourth, the conveyor belt safety factor. At present, when the conveyor factory adopts the steel wire rope conveyor belt, the safety factor of domestic products is 7~9, but abroad is generally about 5, under the same conditions, the domestic conveyor belt model is 1~2 specifications higher than the foreign countries, increasing The equipment cost and operating energy consumption also affect the competitiveness of the product in the international market. The key to reducing the safety factor of the conveyor belt is to improve the joint efficiency and reliability of the conveyor belt.
In addition, Yang Minghua also proposed that conveyor belt companies should also improve their technical services. He introduced that designing materials abroad is very good. For example, Goodyear and Bridgestone's "Technical Guidebook" is like a book, including all technical parameters that conveyor manufacturers want to know. This shows that they are deeply involved in the product research, not only for the selection of conveyor plant services, but also for their own further development of conveyor belt products. However, domestic companies can only provide product samples, and there is very little content in technical guidance. He suggested that conveyor companies should involve technicians before selling products, communicate more with conveyor manufacturers, and allow both parties to better communicate the technical characteristics and conditions of use of the conveyor belt products, and the conveyor belt companies can also meet the requirements of the conveyor plant. Improve the product.
It is understood that at present, the domestic market needs about 10 billion yuan per year for belt conveyors, and the annual demand for international markets is about 30 billion yuan. Yang Minghua said that conveyor belt companies and conveyor companies should carry out more exchanges, cooperate in research and development, and increase the domestic market share of Chinese products.
With the transfer of the world equipment manufacturing industry to China and the technological progress of China's belt conveyor products, China will become the world's largest R&D and manufacturing base for belt conveyors. It is just around the corner, and the global market share of belt conveyors in China will be five years from now. About 50%. The downstream industry's development and technological progress require that its rubber conveyor belt industry be brought into line with international standards faster, adopt international advanced standards, continuously improve product quality, develop low-resistance energy-saving conveyor belts, and strengthen technical services to become downstream industries. Urgently required. This is the information that the reporter got at the 2010 International Forum on Hose Tape Information and Technology organized by the China Rubber Industry Association Pipeline Branch.