DRIVES - Belt Drive , its types

DRIVES - BELT DRIVE

1. Used in conveying systems Transportation of coal, mineral ores etc. over a long distance

2. Used for transmission of power. Mainly used for running of various industrial appliances using prime movers like electric motors, I.C. Engine etc.

3. Replacement of rigid type power transmission system. A gear drive may be replaced by a belt transmission system

The belt drives are usually classified into the following three groups :

1. Light drives: These are used to transmit small powers at belt speeds upto about 10 m/s, as

in agricultural machines and small machine tools.

2. Medium drives: These are used to transmit medium power at belt speeds over 10 m/s but

up to 22 m/s, as in machine tools.

3. Heavy drives: These are used to transmit large powers at belt speeds above 22 m/s, as in

compressors and generators.

Though there are many types of belts used these days, yet the following are important from

the subject point of view :

1. Flat belt: The flat belt, as shown in Fig. 11.1 (a), is mostly used in the factories and

workshops, where a moderate amount of power is to be transmitted, from one pulley to another when

the two pulleys are not more than 8 metres apart.

2. V-belt.:The V-belt, as shown in Fig. 11.1 (b), is mostly used in the factories and workshops,

where a moderate amount of power is to be transmitted, from one pulley to another, when the

two pulleys are very near to each other.

3. Circular belt or rope: The circular belt or rope, as shown in Fig. 11.1 (c), is mostly used

in the factories and workshops, where a great amount of power is to be transmitted, from one pulley

to another, when the two pulleys are more than 8 meters apart.

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