Law of belting

To transmit power from one shaft to another pulley are mounted on the two shafts. A Belt drive is a mechanism in which power is transmitted by the movement of a continuous flexible belt. 

so now let us check it out some information of how to belt drive works? to know more about the law of belting. 

The law of belting states that the centre line of the belt when it approaches a pulley must lie in the midplane of that pulley OR A pulley in that plane must contain the point at which the belt leaves the other pulley. However, when a belt leaving a pulley may be drawn out of the plane of the pulley. 

Law of belting

By following this law of belting, non-parallel shafts may be connected by a flat belt. From the above figure, two shafts with two pulleys are at right angles to each other. Both of these can be observed that the centre line of the belt approaching the larger pulley and it lies in its plane which is also true for the smaller pulley. Also, the points at which the belt leaves a pulley are contained in the plane of the other pulley. 

By observation, it should not possible to operate the belt in the reverse direction without violating the law of belting. Thus, for non-parallel shafts, motion is possible only in one direction. Otherwise, the belt is thrown off the pulley. However, it is possible to run a belt in either direction on the pulleys of two intersecting or two non-parallel shafts with the help of guide pulleys. Thus, the law of belting is still satisfied.