The v-belt is one of the most widely used products in the belt industry. Since 1917, the first automobile fan belt is made by the American, after the promotion for the workers and peasants machinery at the beginning of 1920s, more than half a century, it is in a very rapid development, become the mainstream.In the world's belt, the triangular belt now accounts for 65 percent of the total amount of rubber used, and the toothed belt is 25 percent, and the belt has been reduced to less than 10 percent.At present, the V belt has become the world's all kinds of mechanical power transmission and variable speed of main equipment, in the modern agricultural machinery, machine tools, automobiles, ships, office equipment such as a wide range, is playing an increasingly important role.
In accordance with the section size, the V belt can be divided into industrial machinery with Y, O, A, B, C, D, E, seven industrial model and automobiles, tractors, etc. With all kinds of fan belt, A total of two major categories.Y, O type is the smallest v-belt, mainly used for typewriter, stapler and other office equipment, household appliances (washing machine, juicer, vacuum cleaner).In general industrial machinery, with the increase of horsepower, A, B, C, D, E and other v-shaped belts are used in order, among which D and E are heavy belts, which are used for large machinery such as ships and electric power.As for the fan belt, besides cars and tractors, it is also used in water pump and air conditioning.In developed countries, the production ratio between the triangle belt and the fan belt has reached the level of 2:1 to 3:2, and the fan belt shows a significant increase.
The V belt generally refers to the package type v-belt, which began in the 1960s to improve the durability of the belt, and also appeared the cutting edge v-belt.This kind of cutting edge v-belt, because the belt structure is not covered by the fabric, the belt is very soft, the flexural fatigue performance is very good, and thus the rapid development.Into the 80 s, to solve the triangle dogan group drive for producing different when the transmission efficiency and service life is long and fell, and rise the more root triangle triangle together with flat belt.It is known as the v-type flat belt of the group triangle, which is of great advantage. Therefore, the v-type flat belt is replaced by the phenomenon of the bag type and the cutting edge triangle.This triangle and flat belt with adhesive tape, although there are special requirements on the pulley groove, however, because the body is very thin, and the pulley contact area is large, good bending, pulley, can make the actuator further miniaturization, energy conservation, production increase sharply in developed countries of the world.