(^670) „„„„„ A Textbook of Engineering Mechanics

Transmission of

Power by Belts

and Ropes

670

33

CHAPTERCHAPTERCHAPTERCHAPTERCHAPTER

Contents

1. Introduction.


2. Types of Belts.


3. Velocity Ratio of a Belt Drive.


4. Velocity Ratio of a Simple Belt
   Drive.


5. Velocity Ratio of a Compound
   Belt Drive.


6. Slip of the Belt.


7. Types of Belt Drives.


8. Open Belt Drive.


9. Cross Belt Drive.


10. Length of the Belt.


11. Length of an Open Belt Drive.


12. Length of a Cross-Belt Drive.


13. Power Transmitted by a Belt.


14. Ratio of Tensions.


15. Centrifugal Tension.


16. Maximum Tension in the Belt.


17. Condition for Transmission of
    Maximum Power.


18. Belt Speed for Maximum
    Power.


19. Initial Tension in the Belt.


20. Rope Drive.


21. Advantages of Rope Drive.


22. Ratio of Tensions in Rope Drive.

33.1. INTRODUCTION

In factories, the power or rotary motion, from
one shaft to another at a considerable distance is, usu-
ally, transmitted by means of flat belts, vee belts or
ropes, running over the pulleys.

Fig. 33.1. Transmission of power from A to B.