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V-belts need larger pulleys for their thicker cross-section than flat belts. For high-power requirements, two or more V-belts can be joined side-by-side in an arrangement called a multi-V, running on matching multi-groove sheaves. This is known as a multiple-V-belt drive (or sometimes a "classical V-belt drive").
Gates Industrial Corporation plc, based in Denver, Colorado, is a manufacturer of power transmission belts and fluid power products, which are used in diverse industrial and automotive applications. [1] The company employs over 15,000 and has sales and manufacturing operations in North and South America, Europe, Asia, Australia, and the Middle ...
where is the angle (in radians) between the two flat sides of the pulley that the v-belt presses against. [5] A flat belt has an effective angle of α = π {\displaystyle \alpha =\pi } . The material of a V-belt or multi-V serpentine belt tends to wedge into the mating groove in a pulley as the load increases, improving torque transmission.
It is a stepless, fully-automatic transmission, consisting of a V-shaped drive-belt, and two pulleys, each of two cones, whose effective diameter can be changed so that the "V" belt runs nearer the spindle or nearer the rim, depending on the separation of the cones. These are synchronized so that the belt always remains at the same optimal tension.
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A rope drive is a form of belt drive, used for mechanical power transmission. Rope drives use a number of circular section ropes , rather than a single flat or V-belt . Flywheel and rope drum of the large mill engines Victoria and Alexandra at Ellenroad Mill
Many museum examples exist of such bands used on ecclesiastical textiles or as the foundation for elaborate belts in the European Middle Ages. In the 17th century, tablet weaving was also used to produce some monumental silk hangings in Ethiopia. [7] Tablet weaving is often erroneously believed to date back to pharaonic Egypt.