Fabrication of Stair Climbing Mechanism

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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Fabrication of Stair Climbing Mechanism

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