Power Transmission Mechanical Engineering.pptx

What are Belt Drives?
Belt drives transmit power between shafts using a flexible belt wrapped around pulleys.

Application Areas Commonly used in manufacturing, automotive, and HVAC industries.
Advantages and Disadvantages
They provide flexibility and shock absorption but can encounter issues like slippage, wear, and maintenance needs.

1. Department of Mechanical Engineering And Department Robotics and Artificial Intelligence Sub: ELEMENTS OF MECHANICAL ENGINEERING [BEMEM203] Seminar Presentation Topic: Role of Mechanical Engineering in Industries and Society Present By: Name: YADHUNANDHAN USN: 1MV24ME027 Semester & Branch: 2 nd , ME Reviewer: Name: Prof. Chandrasekhar B Assistant Professor

2. Content or Index: BELT DRIVES AND DESIGN Introduction Literature Review Methodology Results and discussion Conclusions References Slide No. 1- 10 Topic: Role of Mechanical Engineering in Industries and Society

3. B e l t Drive D e s i g n This presentation explores the design cons iderations and calculations for belt drives, focus ing on belt length, tens ion ratio, and power trans mission, to ensure optimal performance and longevity of machinery.

4. Introduction to Belt Drives What are Belt Drives? Belt drives transmit power between shafts using a flexible belt wrapped around pulleys. Application Areas Commonly used in manufacturing, automotive, and HVAC industries. Advantages and Disadvantages They provide flexibility and shock absorption but can encounter issues like slippage, wear, and maintenance needs.

5. Belt Material Selection Choosing the right belt material (e.g., rubber, polyurethane) is crucial for durability, flexibility, and resistance to environmental factors. 3 2 Pulley Design The size and shape of pulleys affect the efficiency and performance of the belt drive; larger pulleys can reduce tension but may increase space requirements. 1 Shaft Alignment Proper alignment between shafts is necessary to prevent uneven wear and prolong the life of both the belt and pulleys. Des ign Cons iderations

6. Calculating Belt Length Verification of Calculations Verify length calculations to avoid binding or slack in the belt, preventing inefficiency or damage. Offset and Angled Pulleys Adjustments need to be made for offset or angled pulleys to account for extra distance. Formula for Belt Length The length of an open belt can be calculated using the formula: L = 2C + (π(R1 +R2))/2. 3 2 1

7. Unders tanding T e n s ion Ratio Importance of Tension Ratio The tens ion ratio is critical for ens uring adequate grip on the pulleys , which impacts power trans mission efficiency and belt wear. Calculation of Tension Ratio Tens ion ratio can be calculated us ing the formula T1 /T 2 = e^(μθ), where T1 is tight side tens ion, T2 is slack side tens ion, μ is the coefficient of friction, and θ is the angle of contact. Dynamic vs. Static Conditions Unders tanding the difference between static and dynamic tens ion is essential for accurate calculations , as dynamic tens ion accounts for inertia and belt stretch during operation.

8. Its essential to consider factors such as belt width, pulley size, and material friction to optimize efficiency. P = (T1 - T2) * V. Efficiency Considerations Higher speeds can lead to increased power transmission but also increase the risk of slippage if tension is insufficient. Power Equation The power transmitted through a belt drive can be calculated with the formul Effects of Speed and Tension Power Trans m i s s ion 1 3 2

9. Common Issues Identifying issues like slippage, noise, or excessive wear early can help avoid costly repairs and downtime. Maintenance and Troubles hooting Adjustment Techniques Implementing proper adjustment techniques , such as tens ioning methods , can mitigate problems and ensure smooth operation. Regular Inspections Frequent checks for wear, tension, and alignment are vital to prevent failures and extend the life of the belt drive s ys tem.

10. Summary of Key Points Effective design involves material, tension, and power optimization. Belt Drive Des ign Conclus ion Advancements in material science will enhance efficiency and lifespan. Final Thoughts Well- designed belt drives provide operational benefits and improve overall performance. Future Perspectives 2 3 1