The ability to move both on the ground and on stairs is stilla a big problem for the pepole with different kinds of disabilities.This study developed has hybrid stair-Climbing wheelchair with front curved spoke Tri and a rear standard tri wheel for stair navigation, supported by a middle motorized wheels for a regular surface movement.To open the middle wheel asssembly when it is neccesary to go to the stairs to make sure that the tri-wheel is not interupted, a rack-pinon mechanism is used .The front curved spoke tri-wheel is only used when going up or down the stairs,while the rear tri wheel is their for the support and stability of the steps starts only the motorized wheels are used for the mobility on flat terrains.The proposed system, which is mechanically assisted and controller-supported is capable of the physically impact with easy, safe and low-cost mobility in various environment and thus increasing the freedom of the moment and independence
Implementation of Curved- Spoke Wheel in stair climbing wheel chair
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