Aerial grapple apparatus and method for handling loose material

Details Aerial grapple apparatus and method for handling loose material Aerial grapple apparatus and method for handling loose material

B - Operations, Transporting

66

C

B66C 3/04 (2006.01) B66C 3/12 (2006.01)

Patent

CA 2671273

A grapple, designed to grab, ferry, and dump loads of loose material such as mulch, comprising left and right frame members and finger assemblies with specially adapted curved fingers. Load arms connect the grapple to a supporting means, typically a helicopter, and also serve as anchors for finger cables and connecting arms cooperating with the finger assemblies to open and close the grapple. The method of grabbing prominently features using the shape of the fingers and the weight of the grapple and load to penetrate into and under the load. A latching mechanism cooperating with the connecting arms ensures stable ferrying until the remote operator, generally the helicopter pilot, activates an electrical control switch to release the latch and dump the load.

L'invention a trait à un grappin conçu pour saisir, transborder et vider des charges de matières en vrac tels que du paillis. Il comprend des éléments de préhension gauche et droit, un assemblage de griffes recourbées spéciales. Des bras de chargement relient le grappin à un moyen de sustentation, s'agissant généralement d'un hélicoptère. Ils servent aussi de points d'ancrage pour les câbles de commande des griffes; les bras qui y sont reliés exercent une force sur les assemblages de griffes pour ouvrir et fermer le grappin. La méthode de saisie fait principalement appel à la forme des griffes et au poids du grappin pour s'enfoncer dans la charge et faire glisser les griffes sous cette dernière. Un mécanisme de verrouillage assujetti aux bras de chargement bloque ceux-ci et stabilise l'opération de transbordement jusqu'à ce que l'opérateur à distance (généralement le pilote de l'hélicoptère) active un commutateur de commande qui libère le verrou et vide ainsi la charge.

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