The mechanical belt drive using a pulley machine was first mentioned in the text the dictionary of local expressions by the han dynasty philosopher poet and politician yang xiong 53 18 bc in 15 bc used for a quilling machine that wound silk fibers on to bobbins for weavers shuttles.
Belt and rope drives.
A rope drive is a form of belt drive used for mechanical power transmission.
Flywheel and rope drum of the large mill engines victoria and alexandra at ellenroad mill multiple rope drive.
Rope drives use a number of circular section ropes rather than a single flat or vee belt.
In many applications the pulley has more than one groove and there are obviously an appropriate number of belts.
The rope runs over a grooved pulley.
Advantages of the rope drive.
Mechanical elements like friction disc various types of belts rope chain gears couplings etc.
Although rope can be used for such drives the vast majority rely on v belts.
Are used for power transmission.
It can be used for long distance.
The rope drive is widely used where a large amount of power is to be transmitted from one pulley to another over a considerable distance.
Rope drive do not mistaken with round belt is used where a large amount of power is needed to transfer for a long distance more than 8m.
Assuming that the included angle of the groove is the normal reaction is given by.
Rope drives use a number of circular section ropes rather than a single flat or vee belt.