Flexible Drives

Flexible Drives

The flexible power transmission elements comprises of belt drives, chain drives and rope drives. Since these elements are flexible they are called flexible drives. They are commonly used in short distance power transmission. Wire ropes can also be used for long distance power transmission. Unlike rigid transmission elements(gears), the design of flexible drives are simple and reduces the cost. When compared with rigid transmission elements, they are quiet and absorbs shocks which reduces mechanical vibrations.

Flexible drives do not have infinite life, hence its necessary to consider the wear, aging, loss of elastic property and also the environment in which the drive is employed, while designing/selecting the flexible drives.

Advantages of Flexible Power Drives

  1. Transmits power between long distance compared to rigid elements

  2. Absorbs shock loads and provides damping

  3. The operation is smooth and silent

  4. Provides simple machine design

  5. Comparatively cheaper

Disadvantages of Flexible Power Drives

  1. More space required

  2. The velocity ratio is comparatively small

  3. If overloaded, power transmission varys

Classification of Flexible Power Drives

  1. Belt Drives

  2. Wire Ropes

  3. Chain Drives