Stair climbing

About: Stair climbing is a research topic. Over the lifetime, 1610 publications have been published within this topic receiving 30504 citations.

Modified stair-climbing cart

Abstract: The utility model discloses a modified stair-climbing cart, belonging to a mechanical transportation tool pushed by labor power The utility model utilizes the superposition principle of double lever, and the maximum load ability is about 300 kg, making the weight transported up stairs stably and with labor saved The common weight which has feet or can be tied by ropes can be pushed up stairs without the need of loading on the cart The utility model has 50 kg, 100 kg and over 100 kg three types; the cart is collapsible to reduce the floor area of the cart

Flat walking stair climbing pneumatic elevator

Abstract: At present, no elevator exists in a building with the floor number being six or smaller, inconvenience is brought to residing, and a position for mounting the elevator is difficult to empty when the elevator is additionally mounted According to a flat walking stair climbing pneumatic elevator, a portable pedal support with an air bag is installed on each step of a walking stair, a pedal (1) carries a person to rise and decline through air inflation and air release of the air bags, and therefore flat walking to walk up and down stairs is achieved The above flat walking stair climbing manner is certainly poor than a standard elevator, requirements, modifications and trouble field installation are not needed for an original walking stair structure, influences on opponents on the first and second floors are avoided, and main resistance for popularization of the elevator is reduced According to the flat walking stair climbing pneumatic elevator, it is like that the support needs to be manufactured for each step, actually, the supports are simple in manufacturing, low in cost and capable of being produced in volume on an assembly line in a plant, the improvement cost of one corridor is greatly lower than the standard elevator and is greatly lower than some walking stair remolding type elevator, and another main resistance for popularization of the elevator is reduced

Crawler-type stair climbing wheelchair

Abstract: The utility model discloses a crawler-type stair climbing wheelchair. The utility model belongs to the technical field of smart medical treatment, wherein the folding driving frame, the upright post main body, the folding connecting rod and the seat main body are matched with one another to form a four-rod mechanism; the folding driving frame, the folding connecting rod and the seat main body canbe folded relative to the upright post main body; the size of the folded wheelchair main body is small; convenient outgoing carrying and transportation, the round tube drawing mechanism and the telescopic handle mechanism are arranged; once not in use, the foldable connecting rods can be respectively retracted into the main body upright posts and the foldable connecting rods; excessive space is not occupied; the difficulty of carrying the elderly upstairs and downstairs through the wheelchair is reduced; besides, the stair climbing crawler belt assembly can be retracted and unfolded relative to the main body stand column through the folding device, can be unfolded during stair climbing, and can be folded relative to the main body stand column when stair climbing is not needed, so that thedifficulty of going upstairs and downstairs of the wheelchair can be reduced.

Gait Phase Subdivision and Leg Stiffness Estimation during Stair Climbing

Abstract: Leg stiffness is considered a prevalent parameter used in data analysis of leg locomotion during different gaits, such as walking, running, and hopping. Quantification of the change in support leg stiffness during stair ascent and descent will enhance our understanding of complex stair climbing gait dynamics. The purpose of this study is to investigate a methodology to estimate leg stiffness during stair climbing and subdivide the stair climbing gait cycle. Leg stiffness was determined as the ratio of changes in ground reaction force in the direction of the support leg Fl (leg force) to the respective changes in length Ll during the entire stance phase. Eight subjects ascended and descended an instrumented staircase at different cadences. In this study, the changes of leg force and length (force-length curve) are described as the leg stiffness curve, the slope of which represents the normalized stiffness during stair climbing. The stair ascent and descent gait cycles were subdivided based on the negative and positive work fluctuations of the center-of-mass (CoM) work rate curve and the characteristics of leg stiffness. We found that the leg stiffness curve consists of several segments in which the force-length relationship was similarly linear and the stiffness value was relatively constant; the phase divided by the leg stiffness curve corresponds to the phase divided by the CoM work rate curve. The results of this study may guide biomimetic control strategies for a wearable lower-extremity robot for the entire stance phase during stair climbing.

Design of stair climbing trolley with anti-slipage mechanism

Abstract: Earlier men used to carry their luggage on their head and in hands. But later on the invention of wheels and cark changes everything. But later on men invented bridges and stairs. The problem again remain same because wheels can’t move on the stairs. Later on man invented some mechanism to climb on the stairs. But in that there are certain problems such that sometimes the surface was not exactly flat and the shaft would rotate. And sometimes while pulling on the stairs trolley would slip. In order to remove that problem we think and apply mechanism in that trolley. We apply the mechanism use in cycles so that it will not slip back on the stairs and a breaking system which will hold the wheel and shaft in its position when it is moving on the flat surface to avoid the problem of slippage.