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

Main course page
  • GENERAL COURSE INFORMATION

    Here you will find documents and information regarding the course overall.

    • QET3/029 Maintenance of Mechanical Systems

      This section contains useful information for the unit and covers six learning outcomes:

      LO 1 Understand the maintenance function

      LO 2 Understand lubricants and lubrication systems
      LO 3 Understand bearing operations, types, materials and causes of failure
      LO 4 Understand power transmissions, principles of operation and failure patterns
      LO 5 Understand seals and sealing principles
      LO 6 Understand and use dismantling and re-assembly techniques

      Please click on a book to read

    • Important: - Please Read!

      Please follow the link to the Ten Basic Rules of Netiquette or Internet Etiquette. Please read this as it is very important to follow the basic rules whilst commenting on a forum.

    • UPLOAD your project summary/ initial ideas here. It is important that you get some ideas down as soon as possible, fill in the summary sheet and upload it here before 22nd November. This is so we can address any problems together. 

    • Project summary proforma. Download this file and answer the short questions. This will help you get your project started.

    • Staff and Contact Details

      Unit 029 will be delivered by Ian Griffiths
       
      Email is ian.griffiths@nptcgroup.ac.uk

      Teams Phone Number is 0330 818 8345

      Ian Griffiths will be contactable during 9am to 4:30pm Mon to Friday

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




    • Belt Drive Video:

      The video below shows the different types of belt arrangements. Please take note of the term Angle or Arc of Contact that refers to the larger the arc or angle of contact the more power it can transmit. 


    • 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.
    • Belt and Pulley Transmission Booklet

      Please read through and use this resources that explains the different types of belts used, troubleshooting and maintenance procedures.

    • 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
    • Activity 2

      Please complete the compound flat belt worksheet below.
    • Please complete the 10 questions on how to work out the driven pulley of a compound flat belt drive. When done upload here.
    • Activity 3

      Please complete the open belt pulley worksheet below.
    • Please complete the 10 questions on the open belt pulley calculations. When done upload here.
    • Activity 4

      Please complete the Complete the crossed belt worksheet below.
    • Please complete the 10 questions on the crossed belt Calculations. When done upload here.