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Stair climbing

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


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Patent
07 Dec 2016
TL;DR: In this article, the authors proposed a multifunctional logistics carrying trolley, which consists of a lifting trolley used for lifting goods on the flat ground and a stair climbing trolley which climbs stairs step by step.
Abstract: The invention discloses a multifunctional logistics carrying trolley. According to the structure of the multifunctional logistics carrying trolley, a lifting carrying trolley used for lifting goods on the flat ground and a stair climbing carrying trolley which climb stairs step by step are formed through combination of parts of the multifunctional logistics carrying trolley. In the goods carrying process, when the form of the lifting carrying trolley is adopted, goods lifting can be achieved, and the requirement for carrying goods with different heights is met; and when the form of the stair climbing carrying trolley is adopted, three wheels of a planet wheel of the stair climbing carrying trolley can be used for intermittently rotating to work to achieve a stair climbing function. According to the multifunctional logistics carrying trolley, lifting of carried goods can be achieved, and labor is saved during loading and unloading; heavy large goods can be transported, the stair climbing function can also be achieved, and labor is saved during carrying; and the application range is wide, the labor intensity of manual work during logistics carrying is lowered, and therefore goods carrying is more convenient and more labor is saved.

3 citations

Journal ArticleDOI
TL;DR: To increase stair climbing, researchers monitored the results of placing signs in a shopping mall where people could choose stairs to climb to increase the likelihood of climbing stairs.
Abstract: The CDC and other national health organizations recommend at least 30 minutes a day of moderate physical activity such as walking or climbing stairs. To increase stair climbing, researchers monitored the results of placing signs in a shopping mall where people could choose …

3 citations

Patent
31 May 2017
TL;DR: In this article, an intelligent spiderman for outer wall stair climbing is described, which consists of a main body, multiple legs, multiple arm mechanisms, multiple adsorbing devices, multiple mechanical arms and a drive system.
Abstract: The invention relates to the technical field of outer wall stair climbing equipment, in particular to an intelligent spiderman for outer wall stair climbing. The intelligent spiderman comprises a main body, multiple leg mechanisms, multiple arm mechanisms, multiple adsorbing devices, multiple mechanical arms and a drive system; the multiple leg mechanisms are arranged on one side of the main body, the multiple arm mechanisms are arranged on the other side of the main body, the adsorbing devices are arranged at the ends, away from the main body, of the leg mechanisms, the mechanical arms are arranged at the ends, away from the main body, of the arm mechanisms, and the drive system is connected with the leg mechanisms, the arm mechanisms and the mechanical arms. Adsorbing and climbing on the outer wall can be achieved through the leg mechanisms and the adsorbing devices, clamping functions of cargos can be achieved through the arm mechanisms and the mechanical arms, the leg mechanisms, the adsorbing devices, the arm mechanisms and the mechanical arms are driven through the drive mechanism, the cargos can be transported to the stairs through a robot, manual climbing is avoided, manpower work intensity is reduced, and safety of workers is ensured.

3 citations

Dissertation
27 Apr 2017
TL;DR: The results infer that leg LMF combined with cardiorespiratory capacity constrain the stair ascending capacities while any recovery can extend the tolerance.
Abstract: Physical exhaustion can constrain human ascending work capacity and performance during emergency evacuation on stairs The overall aim of this research was to explore and compare stair ascending capacities and physiological limitations during two different strategies: self-preferred pace in three different public stairways in the field, and controlled pace in a laboratory on a stair machine Subjects of different ages, genders and body sizes were recruited from social media to simulate evacuation scenarios The specific objective was to determine, through the combined analysis of oxygen uptake (VO2) and electromyography (EMG), whether local muscle fatigue (LMF) in the legs due to repetitive activity rather than cardiorespiratory capacity is the factor that limits ascending capacityThe average relative VO2highest reached 39-41 mL·kg-1·min-1 in the field tests, and 44 mL·kg-1·min-1 in the laboratory at 90% VO2max step rate (SR) L3 In the field tests, the VO2 and heart rate (HR) reached 89 to 95% and 89 to 96%, respectively, of the human capacity reported in literature In the lab, the average %VO2max and %HRmax reached 94 and 97%, respectively At the self-preferred pace, an ascent could be continued at a SR about 92-95 steps·min-1 on the stairs; while in the controlled pace ascent, the maximum duration could be sustained for about 2-6 minutes at 90% VO2max related to average SR 109 steps·min-1 on the stair machine The EMG amplitudes (AMPs) were different in the two the ascending strategies, while neither of the VO2 uptake patterns were affected During self-preferred ascent, the leg muscle AMPs showed a decreasing trend and median frequencies (MDFs) were unchanged or small decrease In controlled ascent, the AMPs tended to increase and MDFs to decrease The significant AMP decrease and the unchanged MDF in self-preferred ascent indicated reductions of muscle power production and possible fatigue compensation by reduction of speeds, which allowed subjects to continue their ascents until the end In contrast, the significant increase of AMP and MDF decrease in the controlled pace were evidence of leg LMF In order to interpret dynamic muscle activity changes over time, we developed the muscle activity interpretation squares (MAIS) to plot the muscle activity rate change (MARC) percentile points In the self-preferred pace, the muscle fatigue recovery through power decrease and pace reduction was reflected in the MARC percentile points that appeared in the MAIS In the controlled pace ascent, the MARC points were in the muscle fatigue square Thus, MARC and MAIS are found to be useful to observe muscle activity changes during dynamic tasks High and constant intensity (97% of HRmax) ascents were evidenced by hyperventilation and LMF due to insufficient recovery that forced the subjects to stop the ascents before 5-min During 90% VO2max, LMF presumably prevented the VO2 from reaching VO2max and limited the ascent duration to 432 minutes The results infer that leg LMF combined with cardiorespiratory capacity constrain the stair ascending capacities while any recovery can extend the tolerance (Less)

3 citations

Patent
15 Jan 2019
TL;DR: In this paper, a biped robot climbing stair gait planning method and device and a robot are described. But the method is not suitable for walking on the floor, and the robot cannot walk on the stairs as freely as a human.
Abstract: The invention discloses a biped robot climbing stair gait planning method and device and a robot. The biped robot climbing stair gait planning method comprises the steps that in the stair climbing process, a variable-length first-order inverted pendulum model is adopted to carry out trajectory planning on a forward gait, the motion trajectory of an ankle joint is constrained according to preset constraint conditions, and a first-order linear inverted pendulum model is adopted to carry out trajectory planning on a lateral gait to realize stair climbing of a biped robot; the process is that whenfacing the first stair, the center of gravity of a body is controlled to move to the left; a right foot of a swing leg is lifted to drop the right foot onto the stair; the center of gravity of the body is moved to the right foot, and the left foot of the swing leg is lifted so that the left foot falls onto the stair; the steps are repeated until the first stair is the last stair; whether the center of gravity falls within a stable region or not is judged; if yes, the walking is finished; and if not, the two legs are controlled to close and return to the starting state. Based on the biped robot climbing stair gait planning method and device and a robot, an effective application of a robot walking mode can be realized, so that the robot can walk on the stairs as freely as a human.

3 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202344
2022121
202165
202090
2019129
201896