Presentation layout
Introduction
Position analysis
Free body diagram
Design of load pins
Design of boom
Summary
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This is project presentation for Physics course. Instructor and project supervisor was Prof. Alpana Vishvajit at Aliah University. It includes: Position, Analysis, Load, Pins, Boom, Hydraulic, Digger, Bucket, Cylinder, Crank, Slider
Typology: Slides
2011/2012
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Presentation layout
Introduction Position analysis Free body diagram Design of load pins Design of boom Summary
1
NEED 2 To design the boom of hydraulic digger for:
Bucket capacity =0.25m^3
Digging force =20kN
Max reach =3.5m
Position analysis
A digger can be analyzed by taking its components
as rigid links
And piston cylinders
As crank and slider
Then it becomes a 16 bar linkage mechanism.
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Position analysis 5
Position analysis
Position analysis 8
P 14
Q 14
R 14
θp (^14) θq 14
θ 14
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Position analysis 13
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MATLAB PROGRAM FOR POSITION ANALYSIS
Five inputs are needed for the calculation of position of joint at any time.
Boom position Θ 1 Θ 3 Θ 4 Cylinder lengths R7 (Arm Cylinder) R11 (Bucket Cylinder)
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FREE BODY DIGRAM 17
Fdx
FREE BODY DIGRAM 19
Force analysis
The program can also calculate the joint forces In this case inputs:-
Digging Force Tangent angle of bucket wrt ground (horizontal Axis)
Angle is measured from – ve x-axis.
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