Stair-climbing wheeled vehicle

B - Operations – Transporting – 62 – B

Patent

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Details

B62B 9/02 (2006.01)

Patent

CA 2677620

A wheeled vehicle comprising a power-driven spider assembly for ascending and descending stairs. The vehicle includes an angular position sensor providing input to a controller operable to control a servo-motor to effectively lock the position of the spider relative to the frame, regardless of the hand truck's spatial orientation relative to a vertical plane, or any balancing of the hand truck. The angular position sensor provides input to the controller, which is programmed with predefined angular zones of instability, and causes the controller to accelerate rotation of the spiders through those zones when the wheeled vehicle is in the descent mode, to avoid instability of the hand truck. A hand truck may include a removable basket and/or a pivotable platform usable to transport loads.

L'invention concerne un véhicule sur roues comprenant un ensemble croisillon à commande mécanique pour monter et descendre des marches. Le véhicule comprend un capteur de position angulaire fournissant une entrée à un contrôleur pouvant être mis en AEuvre de manière à commander un servomoteur en vue de verrouiller de manière efficace la position du croisillon par rapport au cadre, indépendamment de l'orientation spatiale du chariot manuel par rapport à un plan vertical, ou de tout balancement du chariot manuel. Le capteur de position angulaire fournit une entrée au contrôleur qui est programmé avec des zones angulaires prédéfinies d'instabilité, et permet au contrôleur d'accélérer la rotation des croisillons à travers ces zones lorsque le véhicule sur roues est en mode descente, afin d'éviter l'instabilité du chariot manuel. Un chariot manuel peut comprendre un panier amovible et/ou une plate-forme pivotante utilisable pour transporter des charges.

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