Safety guard mechanism for lifting device

Details Safety guard mechanism for lifting device Safety guard mechanism for lifting device

B - Operations, Transporting

66

F

B66F 17/00 (2006.01) B60P 3/14 (2006.01) B60S 9/04 (2006.01) B66C 15/00 (2006.01) B66C 23/78 (2006.01) B66F 3/22 (2006.01) B66F 7/06 (2006.01) B66F 7/28 (2006.01) B66F 11/04 (2006.01)

Patent

CA 2646412

The safety guard mechanism for a lifting device is a mechanism that can automatically deploy a safety guard pivotally mounted to the lower surface of the frame of a portable aerial lift device when the lift is raised. By lowering the guard member, the distance between the lower surface of the base and the ground is decreased. The helical screw-based mechanical device includes a mechanical translator coupled with a rotator, the entire assembly interconnecting the guard member and a scissors-type lift so that raising the lift drives the lowering of the guard member. In the lowered position, the guard prevents tipping of the lift should one or more wheels enter a pothole or other depression. A helical screw latch is included to provide a self-locking feature.

Le mécanisme protecteur pour dispositif de levage est un mécanisme qui peut automatiquement déployer un mécanisme protecteur installé de manière à pivoter à la surface inférieure du cadre d'un dispositif de levage portatif lorsque ce dernier est levé. En abaissant l'élément protecteur, la distance entre la surface inférieure de la base et le sol est réduite. Le dispositif mécanique basé sur une vis hélicoïdale comprend un translateur mécanique couplé à un rotateur, l'ensemble complet interreliant l'élément protecteur et un appareil de levage à ciseaux de sorte que le levage de l'appareil entraîne l'abaissement de l'élément protecteur. En position abaissée, l'élément protecteur empêche le basculement de l'appareil de levage si une ou plus d'une roues passaient dans un nid-de-poule ou un trou. Un verrou à vis hélicoïdale est inclus afin d'offrir l'autoverrouillage.

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