Section: Week 17 - 18: LO 4 Understand power transmissions, principles of operation and failure patterns of Belt Drives | EAL Level 3 QET3/029 Maintenance of mechanical systems 23-24 | Grŵp NPTC Group Moodle

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Week 17 - 18: LO 4 Understand power transmissions, principles of operation and failure patterns of Belt Drives

  • Week 17 - 18: LO 4 Understand power transmissions, principles of operation and failure patterns of Belt Drives

    belt

    29.4 Understand power transmissions, principles of operation and failure patterns of 

    BELT DRIVES

    Lesson Objectives

    • To discover the principles of operation: arc of contact and speed ratio formulae
    • To identify the different types and arrangements of belts: single, multiple and banded
    • To explore the maintenance requirements of belts: condition, tension, storage, alignment, correctly matched and change as set
    • To examine the operating symptoms: breakage, slapping, turn over, slippage and whipping
    • To recognise symptoms of belt failure: burns, stretching, worn sheaves, cracking, swelling, wear and fraying
    • To determine the causes of failure: damaged pulleys, interference, overheating, dirt, misalignment, overloading and incorrect tension




    • Here are some notes on using an idler for belt tensioning and also the arc of contact.
    • Information on calculating tensions, power transmission, belt slip. Higher level equations for those with a thirst for knowledge. These notes were developed Mr Kharagpurfor.
    • Here is information on all you need to know for belt drives that covers the criteria for the unit.
    • Please read through the PowerPoint on the different types of belt drive
    • Please complete the 10 questions on how to work out the driven pulley of a compound flat belt drive. When done upload here.
    • Please complete the 10 questions on the open belt pulley calculations. When done upload here.
    • Please complete the 10 questions on the crossed belt Calculations. When done upload here.