Stair climbing

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

Design and fabrication of stair climbing trolley

Abstract: Trolley is generally use for the carrying heavy weights with the help of less human effort. The manufacturing of the trolley deals with proper design, accurate fabrication and prescribed analysis using finite element software gives better motion which resist to high load by applying less effort this paper deals with manufacturing of such stair climbing trolley with simple mechanism( i.e. ratchet mechanism) initially the model is sketched using solid works and imported into ANSYS software for structural analysis used to find von-mises stresses under load which deals to fabricate trolley with better performance under heavy duty with less effort.

Maintaining balance on a moving bus: The importance of three-peak steps whilst climbing stairs

Abstract: In a previous work of the authors, the impact of bus acceleration in level walking was presented. However, climbing stairs is physically more challenging than level walking and results in a high number of falls, hence substantial medical costs. Understanding the impact of a dynamic environment, such as that of a bus, on people’s gait whilst walking on stairs, would enable the reduction, or even the elimination of balance-loss falls. The gait of 29 healthy and regular bus users (20–80 y.o.) was monitored whilst ascending and descending a static and “moving” staircase. The tasks took place in a real double-decker bus which was initially stationary. When the bus was moving, ascending was tested during medium acceleration (+1.5 m / s 2 ), while descending during medium deceleration (−1.5 m / s 2 ), reproducing the most common movements aboard buses. Examining healthy people enables the identification of differences in gait that are accounted for the alteration in the bus environment and gives the opportunity to further consider the challenges mobility impaired passengers are experiencing. After applying the method established in level walking, chi-square tests were performed on participants’ step type (resulting from the ground reaction force profile), taking into account participants’ age and gender and the bus acceleration. The outcomes revealed that age and gender affect people’s gait in a dynamic environment. Moreover, there is a significant correlation between the increase of acceleration and the type of steps passengers use to sustain their balance, as the number of three-peak steps was increasing with the increase of bus acceleration. Hence, the bus environment forces people to use a walking style other than their natural one and older people in particular, unconsciously increase the contact area between their foot and the floor (three-peak steps) to increase balance. Surprisingly, males appear less able than females to control balance. People’s stair walking in a moving vehicle was investigated for the first time and has opened-up new horizons for gait analysis in dynamic environments.

Stair-climbing device, such as for invalids' wheelchairs

Abstract: The stair-climbing device (15) which is suitable for example for wheelchairs (10) and driven by an electric motor has two running wheel pairs (17a/17b) which swivel about drive shafts (20a, 20b) which are separate and eccentric but driven together and which running wheel pairs thus successively come to rest on a step of the stair or are lowered thereon. At the same time, blocking of the individual running wheels during their swivel movement can be carried out by means of braking devices assigned to the individual running wheels (17a, 17b) in order to prevent an undesired rolling away of the wheelchair (10) over the edge of a stair. … …

Inner planetary gear type stair climbing device

Abstract: The invention aims to provide an inner planetary gear type stair climbing device which is formed by wheels and a vehicle body. The vehicle body is connected with the wheels. Under the action of manpower, the operation of climbing up and down stairs is realized. Each wheel consists of a rubber tire, an annular gear, a planet carrier, a gear shaft system and a roller shaft system, wherein the rubber tire is connected with the annular gear; the annular gear is connected with the gear shaft system; and the gear shaft system and the roller shaft system are connected with the planet carrier, so that the stable and non-impact operation that the inner planetary gear type stair climbing device continuously climbs up and down the stairs is realized. For the the inner planetary gear type stair climbing device disclosed by the invention, due to the adoption of an nner planetary gear transmission mechanism and a centreless shaft design, the automatic switching of traveling on the flat ground and climbing up and down the stairs is realized by the manpower, and the wheels are in real-time contact with the ground in the process of climbing up and down the stairs so that the rigid impact is eliminated. The inner planetary gear type stair climbing device disclosed by the invention has no requirement on the sizes of a tread and a kicking surface of a step, can be widely applied to a stair climbing machine, a stair climbing cart, a stair climbing wheelchair and a luggage, has simple structure and low cost and is universal for various steps. The invention provides an effective solution for transportation under various conditions of climbing up and down the stairs.