Stair Climbing Wheelchair Powerpoint
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The document describes a proposed design for a stair-climbing wheelchair. The wheelchair needs to be able to carry 120 pounds, climb stairs of 8 inch height and 11 inch width using 50 pounds of force or less, and climb at least 5 stairs. It includes diagrams of a front view, top view, and exploded view of the proposed design. Key features are specially designed wheels that can grip stairs, hand cranks and gear ratios to reduce the force needed, and a reclining seat frame to shift the center of gravity while climbing. Analysis shows the ascent up stairs would be smooth and linear.
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Stair Climbing Wheelchair Powerpoint
- 1. Stair Climbing Wheelchair GROUP MEMBERS: RICHARD TUON, JAMES WALKER, ALEC WIENS
- 2. Problem statement Create a stairclimbing wheelchair User weight of 120 pounds User can apply 50 pounds of force in one action, or 20 pounds of force repeatedly Climbs steps that are a height of 8 inches and width of 11 inches Can climb at least 5 steps Works on both flat ground surfaces and stairs
- 4. Front-side View Angled view of the wheelchair in full render
- 5. Top view Top angled view
- 6. Exploded View Exploded view to show all of the parts
- 7. Lean Function and Exploded View
- 8. Specially Designed Wheels Wheels that can grip onto the steps and climb up Also works fairly smoothly on regular flat surfaces
- 9. Hand Crank and Gear Ratios Because of a low 20 pounds of force input, gear ratios is a must Hand crank and gears allows the user to rotate control the wheels with ease.
- 10. Seat Frame Allows the user to recline backwards and forwards Shifts the center of gravity to prevent toppling over while climbing stairs
- 11. Smooth Ascension The graph of linear displacement in the Y- direction shows that the upward movement of the user is fairly linear As a result, the movement of climbing the stairs is smooth -5 0 5 10 15 20 25 30 35 40 45 50 55 60 0.000 10.000 20.000 30.000 40.000 inches time (seconds) Linear Displacement (Ascending Height) stair climbing wheel-3 Linear Displacement1 (inch) Ref. Coordinate System:
- 12. Conclusion Initially the idea sounded ludicrous Brainstorming reveals multiple different solutions Implement design of machinery knowledge to create a machine Incorporate knowledge of gear ratios, joints, levers, and physics to your benefit Fulfill the problem statement requirements Stairclimbing wheelchair can be simple to make and beneficial to wheelchair users to increase comfort of living