Variety classification of transmission belt
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Variety classification of transmission belt

Views: 0     Author: Uliflex     Publish Time: 2020-07-06      Origin: Site

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  1 The flat belt is the oldest type of transmission belt, with a history of more than 100 years, but until the middle of the 20th century, it still occupied about half of the market share of the transmission belt. It has the characteristics of simple structure, convenient transmission, no distance limitation, easy adjustment and replacement, etc. It is widely used in various industrial and agricultural machinery. The width of the flat belt is generally 16-600mm, the maximum length can be up to 100-200m, and the maximum number of layers is 6. The most common one is the canvas belt, which is divided into three types: cladding type, laminated type and laminated type. Laminated belt is an improved product of cladding belt (also known as round edge belt). It has the advantages of soft, elastic and good yield resistance. It is suitable for use on small pulleys and fast transmission devices above 20m/s. . The stacking belt is between the two and is used for the transmission where the side is susceptible to wear. Due to the low transmission efficiency of flat belts (generally around 85%) and the large area occupied, the output of various countries in the world has decreased year by year since the 1960s. In developed countries, except for some agricultural machinery and light textile machinery that are still used in small quantities, they are already in a state of being eliminated. On the other hand, during this period, endless belts and thermal joint endless belts made of chemical fiber canvas and cord as the core body have made great progress in the world. It is characterized by high strength, low noise, smooth transmission, smooth transportation, flex resistance, long life and no need for joints. The field of use is continuously expanding and forming the mainstream in micro-transmission belts.    2 V-belt, also known as V-belt, is a product with the largest output, the most varieties and the most versatile transmission belts. Since the automobile fan belt was first made in the United States in 1917 and began to be used in industrial and agricultural machinery in the early 1920s, it has been in prosperity for more than half a century and has developed very rapidly. It has become the mainstream of transmission belts. In the transmission belts of various countries in the world, from the perspective of the amount of rubber, the triangle belt has now accounted for 65%, the toothed belt is 25%, and the flat belt has been reduced to less than 10%. V-belts have become the main equipment for power transmission and speed change of various mechanical devices in the world, and play an increasingly important role in today's wide fields of agricultural machinery, machine tools, automobiles, ships, office equipment and so on.   According to the cross-sectional size, the V-belt can be divided into seven industrial models for industrial machinery: Y, O, A, B, C, D, E, and various fan belts for automobiles and tractors, totaling two categories. Y and O types are the smallest V-shaped belts, which are mainly used for office equipment such as typewriters and book cutters, and household electrical appliances (washing machines, juicers, vacuum cleaners). For general industrial machinery, with the increase of horsepower, V-belts such as A, B, C, D, and E are used in sequence, of which D and E are heavy-duty belts, which are used for large machinery such as ships and electric power.   With the rise of high-tech industries, this micro-strip is commonly used in computer peripherals, office automation equipment, and labor-saving equipment. For example, automatic ticket checking machines, automatic ticket machines, currency exchange machines, ticket issuing machines, cash machines, bank settlement machines, automatic inspection machines, copiers, medical equipment, automatic packaging machines, fish detectors, etc., the United States, Japan, Europe and other countries It grows in double digits every year.    This high-performance jointless flat belt has been developed into three types: polyurethane belt, polyurethane core belt and rubber canvas core belt. In the rubber micro-belt, in addition to chemical fiber canvas, there are special products that use nylon membranes, aramid cords, and glass fiber cords as the core, and the surface rubber is covered with chrome skin. They are essentially different from traditional canvas flats. They have very precise specifications and high added value. The world's major tape manufacturers are competing to develop and have become high-tech products in the rubber industry.

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