A driving pulley, in particular, is a powered wheel and axle that moves a conveyor belt. Also called belt conveyors, a conveyor belt is a loop of material that runs between two or more pulleys: drive pulleys and idlers. The purpose of conveyor belts is to move objects along the belt to another location. In the conveyor belt system, a drive pulley has power applied to it and an idler is a pulley that has no power. The drive pulleys will cause the belt to move toward them, while the idler pulley simply turns over and allows the belt to move. The power can be derived from a motor or can be provided by hand. The larger the materials or goods that are moved by the conveyor built the pulley is powering, the stronger the motor or other power source will need to be that drives the drive pulley.
A pulley is one of the six simple machines, along with an inclined plane, lever, wheel and axle, wedge and screw. The belts operated by drive pulleys typically have two or more layers and are usually made of rubber. The inside layer is the strong layer, called the carcass, that is next to the pulley, and the outer layer is called the cover. For strength, the carcass is usually made of cotton or plastic mesh and the cover is rubber or plastic.
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The “China Automotive and Parts Market Analysis and Forecasting Meeting and China Automotive Industry Development Summit†will be held in Shenyang from November 26th to 28th. The analysis seminar for the domestic automotive industry and market research initiated and undertaken by Liaoning Automotive Information Center China Automotive Dynamics Network has been successfully held for three times since 2002. The conference was awarded by China Machinery Industry Federation and Development Research Center of the State Council. Industrial Economics Research Department, Shenyang Municipal People's Government, Liaoning Provincial Development and Reform Commission, and major automotive-related companies.
This year's annual meeting will deeply analyze the development characteristics of the various market segments in 2005, and conduct in-depth research on the favorable and unfavorable factors that affect the development of the automobile industry. This will have important guiding significance for companies to understand the market and make decisions in the next year. There are a total of three sub-forums in this session, namely, the passenger car and parts market forum, the commercial vehicle and parts market forum and the international forum, which will fully analyze and discuss the characteristics and focus of their respective markets. The conference will in-depth analyze and study the status and characteristics of automobiles, engines, and parts markets in each model in China from various angles, and use a combination of qualitative and quantitative methods to forecast the market demand for subdivided automobiles, engines, and parts and components in 2006. The development trend, especially for the engine, axle, transmission industry key research. At the same time, the regional market research will be integrated into the micro situation analysis, and the development of key markets such as Beijing and Liaoning will be fully discussed. In addition, this year's annual meeting will pay special attention to the needs and development of the international automotive market, and strive to create opportunities and platforms for exchange of technology, funds, channels, maintenance and development, help domestic companies to go abroad, and increase their ability to participate in international markets. More extensive cooperation space and market prospects. 
