Basic Technology

Belt and Pulley Drives: Types of Belt in Belt Drives

len Alfred Ajibola - Tue, 03rd March, 2020 @ 13:07: PM

Topics in Basic Technology

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Academic Questions in Basic Technology

Please check out our Test Your Knowledge page to see all Questions and Answers

Which of the following is not a function of thin continuous line in Technical drawing?

  • A. Used for representing projection lines
  • B. Used as construction lines
  • C. Used for representing visible outline and edges
  • D. Used for representing leader lines
  • E. Used as intersection lines
  • F. Used as measurement lines

The following are Types of Line in Technical Drawing EXCEPT _____.

  • A. thin continuous line
  • B. inverse head line
  • C. thin dash line
  • D. continuous thin straight zigzag line
  • E. free hand line
  • F. chain thin line with thick ends

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Belt and Pulley Drives:

The belt drives are frictional drives that transmit mechanical energy on a dry surface from one shaft to another in a pulley-like system. An instance of a belt drive is shown in the image below.
Belt Drive - Len Academy

For the belt drive to work properly, both sides of the shaft must be dry and separated by some distance.

Please read on the Advantages and Disadvantages of Belt Drives here.

Note: Either shafts (also referred to as the pulleys) on which the belt drives are attached do not necessarily need to rotate at the same speed; neither must they be of the same size.

You can read on Chain Drives here.

The tension between both sides of the belt will depend heavily on the angle of contact. To this end, the tight side of the belt drive is always below while the slack (or loose) side stays above. They are shown in the image below.
Slack and Tight sides in a Belt Drive - Len Academy

You can read on Angles here.

The area of belt having a lesser tension (less tightly stretched) is generally referred to as the slack side while that having a higher tension (more tightly stretched) is termed the tight side. You can think of tension as the level of tightness at which something is stretched.

Please read on the Concepts of Force and Motion here.

In belt drives, mechanical power is usually transmitted from the driving pulley to the driven pulley via a rotational motion. Since belt drives are used in conjunction with pulleys; some of the mechanisms or machines that utilizes belt drives include:


Types of Belt in Belt Drives

The belts used in machines utilizing the belt drive system can be of the following types:
Belt Types in Belt Drive - Len Academy


  1. Flat Belts: These belts are somewhat rectangular in shape; and they bring about rotational movement over long distances; and with a very low noise. The flat belts have an efficiency of about 98%.
    Please read on Motion and Speed here.

  2. Vee Belts: They are used with grooved pulleys and can allow for high speed and rotation. They are relatively common because of their low cost and numerous size ranges.
    You can Attempt Len Academy Basic Technology Questions for JSS2, Second Term here.

  3. Circular Belts: These belts are circular in shape. They can also be used with the grooved pulleys.

  4. Cylindrical Belts: These belts are looped and flat. They are often used in milling machines.

Note: Materials used in making the various kinds of belt drives include rubber, plastic, fabric, leather and other synthetic materials.

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len

Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.


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