Stair Climbing Wheelchair

Stair Climbing WheelchairGroup members: Richard Tuon, James Walker, Alec Wiens

Problem statementCreate a stairclimbing wheelchairUser weight of 120 poundsUser can apply 50 pounds of force in one action, or 20 pounds of force repeatedlyClimbs steps that are a height of 8 inches and width of 11 inchesCan climb at least 5 stepsWorks on both flat ground surfaces and stairs

Demonstration of wheelchair

Front-side ViewAngled view of the wheelchair in full render

Top viewTop angled view

Exploded ViewExploded view to show all of the parts

Lean Function and Exploded View

Specially Designed WheelsWheels that can grip onto the steps and climb upAlso works fairly smoothly on regular flat surfaces

Hand Crank and Gear RatiosBecause of a low 20 pounds of force input, gear ratios is a mustHand crank and gears allows the user to rotate control the wheels with ease.

Seat FrameAllows the user to recline backwards and forwardsShifts the center of gravity to prevent toppling over while climbing stairs

Smooth AscensionThe graph of linear displacement in the Y-direction shows that the upward movement of the user is fairly linearAs a result, the movement of climbing the stairs is smooth

ConclusionInitially the idea sounded ludicrousBrainstorming reveals multiple different solutionsImplement design of machinery knowledge to create a machineIncorporate knowledge of gear ratios, joints, levers, and physics to your benefitFulfill the problem statement requirementsStairclimbing wheelchair can be simple to make and beneficial to wheelchair users to increase comfort of living