For transferring power between the two parallel axels V pulley is solely used. The notable variation between other types of pulleys and this pulley is the geometry of the grooves, which are situated around the circumference of the pulley. These groves achieve traction on a v belt.
The V belt pulley provides a mechanical connection with a section that looks like an isolated trapezoid. The complementary pulley and v belt creates the most competent belt drive. These belts were built in the earlier days for torque transmission and belt reliability from the rotation to cracnkshaft assembly. These belts remain as a common type of winding belt today.
The transmission of the V pulley is a distinguished upgrade from the flat or round belt transmission. These belts provide a speed, load capacity and excellent traction, while enjoying a extended life with easy substitution. The transmission efficiency is increased by heavy loads since they wedge the belt further into the pulley groove, thus improving friction. However, v belt drives function among 1500 to 6000 ft/min, with 4500 ft /min, which is the ideal capability for standard belts. Some narrow belts can function at speeds of 10,000 ft/min. These pulleys need to be vigorously steady in nature. These pulleys may be located with side-by-side pattern or a singular pulley may possess multiple grooves around the circumference in order to accommodate a multi- belt drive. This type of drive distributes torque across numerous belts and thus providing a mechanical idleness.
There are some advantages of these pulleys, which are as follows -
ïƒ˜ These pulleys need minimal maintenance with no lubrication.
ïƒ˜ These pulleys are extremely reliable in nature.
ïƒ˜ There can be slow wear that can be identified easily.
ïƒ˜ These pulleys provide great speed range and wide horsepower.
ïƒ˜ These pulleys operate in a quite manner.
ïƒ˜ There is very little vibrating dampening for these pulley
ïƒ˜ These pulleys prevent overload
There are various kinds of pulleys that are used for v - belt transmission, but each has dissimilar implantation. The flat belt pulleys have the similar function of that of the ribbed v-belt pulley, as the pulley rotates in the opposite direction of the driven pulley when the backside of the v-belt is being used.
Standard Pulley - These pulleys have customary dimensions with one or multiple grooves, which mate with small engine and hexagonal style v belts.
Companion Pulley has integral spokes, which move radically on the pulley. These produce high strength to weight ratio that is advantageous to fractional horsepower pulley.
Step Pulley has two or more non-adjustable grooves, which has different pitches located around the same shaft. These pulleys change the speed ration of transmission.
There are some of parameters for selecting these pulleys.
* Belt Profile - The sizes of the style is integrated.
* Outside diameter- The distance across the pulley when measured between groove edges
* Grooves- The grooves that are located on the pulley include the angle, number and width of the flanges.
* Contact Arc- The degree of which the belt wraps around the pulley.
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