Click here to load reader

BRAKE DAY2

  • View
    515

  • Download
    1

Embed Size (px)

Text of BRAKE DAY2

TOPIC: BRAKE

TOPIC: BRAKEWEEKLY PRESENTATION NO: 2

CONTENTS:

Basics Single block brakeDouble block brakePivoted block brakeSelf energizing and self locking brakesProblemsolution

BASICS FOR BLOCK/SHOE BRAKE:

l = pivot to force applied distancex = wheel center to pivot distanceFt = Tangential forceRn = Normal reaction2 = Angle of contacta = Ofsett distance

SINGLE BLOCK DOUBLE:SINGLE BLOCK IS USEDMATERIALAPPLICATIONTRAMTRAIN

DOUBLE BLOCK BRAKE2 BLOCK OR SHOE ARE USEDOVERCOMES DRAWBACK OF SINGLE ONEAPPLICATIONELECTRIC CRANESCYCLES

PIVOTED BLOCK BRAKEBLOCK IS PIVOTED ANGLE OF CONTACT MORE THAN 60degree

6

SELF LOCKING & SELF ENERGISINGSelf-locking brakes self-energizing brakex .a & P=0 vs P0

PROBLEM:Given conditions: Erics weight as 80kg and weight of cycle as 10kg, driving speed is 20km/hr on a level road and front wheel diameter is 0.75m. Pressure applied on brake is 150N with coefficient of friction 0.6.To find: distance travelled after application of brake?No of revolution made?

SOLUTION:

SOLUTION Part 2:

REFRENCES:https://upload.wikimedia.org/wikipedia/commons/1/1b/Labeled_brake_set_mono_2.jpg http://i.ytimg.com/vi/JHBlIsmWPYA/maxresdefault.jpghttps://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Labeled_brake_set_mono_2.jpg/400px-Labeled_brake_set_mono_2.jpghttp://eorailway.co.uk/departments/diary/uploaded_images/Mk2-TSO-Replaced-Brake-shoes-22_Nov_2012.jpghttp://thumbs.dreamstime.com/x/train-brake-11494344.jpghttp://www.railway-technical.com/Brake-Discs.jpghttps://upload.wikimedia.org/wikipedia/commons/8/80/Bicycle_caliper_brake_highlighted.jpghttps://upload.wikimedia.org/wikipedia/commons/8/8d/Bicycle_brakes_-_animated.gifhttp://www.railway-technical.com/airbra-app.gifTECH MAX publication book on THEORY OF MACHINE 2