Post on 07-Jul-2018
transcript
8/19/2019 Fabrication of Stair Climbing Mechanism
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Introduction Types of stair climber
Previously Designed Mechanism
Optimized Design
Purpose of optimization
Different parts
Steps In fabrication
Application Areas
Cost analysis
Result
Scope for Further Study
conclusion
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A stair climbing mechanism is a semi-automated vehicle,
which has the capability to climb the stairs easily. Stair
climbing is one of the most attractive performances of mobile
robot.
Stair climbing mechanism is utilized mainly for two purposes,
one is for making stair climbing wheel chair and other is for
the shifting of heavy objects. It is more helpful for the physical
handicapped persons and the persons who are unable to climb
the stairs. So the freedom of mobility for a handicapped personincreases. And heavy objects can be shifted from ground floor
to top floor through the stairs.
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Types of stair climbers
Two-legged
Four-legged
Six-legged
Leg-wheel Hybrid Stair climbing mechanism with high grip crawler
Four wheeled stair climbing mechanism
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CALCU
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Low cost
Easy design and Fabrication
Easy mounting of motors
Higher strength
Better sitting arrangement
Better Dynamic balance
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ifferent parts
Chain and sprocket drive
Steel Pipes, bars and rods
Bearings
Dc Geared Side shaft Motors
Transformer
Gripper (cycle tube)Control switch
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Collecting The Required raw materials
Cut the Pipes And Rods To Required Size
Fabricate The Cut Pipes As Per The Design
Fix The Bearings At The Desired Position
Chain And Sprocket Arrangement
Put The Approaching Wheel
Alignment Of MotorsConnect The Drive With Motors
Fit the cycle tube on the chain
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Steps In Fabrication
Place The Transformer
Connect The Motors With The Transformer Through A Switch
Connect Transformer To Power Source
Power Supply On Testing
Make a base of plywood to put on the mechanism
Fix the base(Chair) on mechanism with nut and bolt
Then go for Final testing
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For perfect and smooth approaching with the stair
To increase gripness
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Motor Speed : 40 rpm
Torque :120 kg-cm
Copper Coiled Armature
Brushless Motor Externally Geared For Transmission
Voltage 16 v
Currents : 4 amps
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Testing
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• Used as stair climbing
wheelchair
•
Used for shifting luggage
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Cost analysis
CLICK HERE
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Result
• By considering several design aspect we fabricate a mechanism. The
resulting mechanism can climb the stairs by carrying 20 kg weight whenthe stair inclination angle is 20o.
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Scope for Further Study
Different parameters are obtained by considering the total
weight of 70 kg. and the motors of 120 kg.cm torque power
are used in the mechanism. This stair climbing mechanism is
utilized if the angle of the stair is 20 degree or below 20
degree. For the increment in the weight and the stairinclination angle, high power motors can be used, which will
give better result.
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Conclusion
• An attempt has been made to fabricate a stair climbing
mechanism with the available indigenous material and is
proved that the fabrication of stair climbing mechanism
can be achieved.
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