ME100 Basics of Mechanical Engineering Module 4 :'Rope and Chain Drive'

Rope Drives



       Rope drives are used for transmission of large amount of power over long distances.
       Wire ropes are extensively used in
       elevators,
        mine hoist,
        cranes,
        conveyors,
        lifting tackles
       suspension bridges etc.

Advantages

        A number of drives may be taken from one driving pulley.
       For a rope drive, groove angle of the  pulley is usually 45o

Commonly used  rope drives are

       Fiber ropes

       Wire ropes

Chain Drives



Chain drives are used in

       Bicycles
       Motor cycles
       Machinery
       Rolling mills
       Conveyors

Advantages

       It can provide nonslip drives
       It provides high efficiency
       Offers less load on shafts
       Occupies less space

Disadvantages
       High cost
       More weight
       Velocity fluctuations due to stretching during use
       Needs accurate mounting and maintenance
       Lubrication is critical
       Chain does not perform well on applications requiring precision positioning

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