Dragline including improved boom

B - Operations – Transporting – 66 – C

Patent

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Details

B66C 23/36 (2006.01) E02F 3/54 (2006.01) E02F 9/14 (2006.01)

Patent

CA 2152574

A dragline comprising a main housing, a bucket hoist mechanism mounted on the housing, a bucket drag mechanism mounted on the main housing, a moving mechanism for moving the main housing over the ground, a boom having upper and lower ends and a rectangular cross-section, the lower end being connected to the main housing, the upper end having thereon a sheave, the boom having a longitudinal axis and including a center section having top and bottom members parallel to the longitudinal axis, the center section having a neutral axis above the longitudinal axis, structure supporting the boom relative to the main housing, a bucket, a hoist rope extending between the bucket and the bucket hoist mechanism and over the sheave for causing vertical movement of the bucket, and a drag rope extending between the bucket and the bucket drag mechanism for causing horizontal movement of the bucket.

La présente invention a pour objet une pelle mécanique à benne traînante comportant une cabine sur le dessus de laquelle sont montés les mécanismes de levage et de halage du godet racleur, le moteur du mécanisme-marcheur assurant le déplacement de l'engin sur le sol; une flèche présentant une section transversale rectangulaire et des extrémités supérieure et inférieure, l'extrémité inférieure étant articulée à la base de la cabine et l'extrémité supérieure étant pourvue d'une poulie de renvoi; la flèche en question se prolonge dans un axe longitudinal et comporte une section centrale dont les éléments structuraux supérieurs et inférieurs sont parallèles à l'axe longitudinal, la section centrale ayant un axe neutre au-dessus de l'axe longitudinal; une structure de support reliée à la cabine assure le support de la flèche; un godet racleur, un câble de levage relie le godet racleur au mécanisme de levage du godet racleur, une poulie de renvoi sert à imprimer le mouvement vertical au godet, et un câble de halage reliant le godet racleur au mécanisme de traction du godet racleur sert à imprimer le mouvement horizontal au godet racleur.

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