B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
B66C 23/42 (2006.01) B66C 23/68 (2006.01) B66C 23/70 (2006.01) B66C 23/74 (2006.01) B66C 23/82 (2006.01)
Patent
CA 2216081
A transportable multi-purpose crane includes a platform having outriggers disposed at opposite ends thereof. A turntable is rotatably mounted to the platform between the outriggers on opposite ends of the platform, and has a center axis of rotation. A riser boom, having a first end and a second end, is pivotally mounted to the turntable at its first end, and the second end supports a first load carrying device. The riser boom points in a first direction with respect to the center axis of rotation, and is a telescoping boom. An upper boom, having a first end and a second end, has its first end pivotally mounted to the second end of the riser boom. The second end of the upper boom supports a second load carrying device. The upper boom points in a second direction, opposite the first direction, with respect to the center axis of rotation, and is a telescoping boom. By providing the riser boom and the upper boom such that the riser boom serves as a counterweight when the second load carrying device carries a load and such that the upper boom serves as a counterweight when the first load carrying device carries a load, the crane does not need a separate counterweight.
Grue polyvalente mobile comprenant une plate-forme munie de stabilisateurs sur ses côtés opposés. La plate-forme est équipée d'une plaque tournante à pivot central placée entre les stabilisateurs. Une flèche télescopique rotative comprend une première extrémité, fixée sur la plaque tournante, et une deuxième extrémité, qui supporte un premier dispositif de manutention. Cette flèche est orientée dans une première direction par rapport à l'axe central de rotation. Une flèche télescopique supérieure comprend une première extrémité pivotante, montée sur la deuxième extrémité de la flèche inférieure, et une seconde extrémité, qui supporte un deuxième dispositif de manutention. La flèche supérieure est orientée dans une direction opposée à la première, par rapport à l'axe central de rotation. La grue ne requiert pas de contrepoids distinct, étant donné que la flèche inférieure sert de contrepoids lorsque le deuxième dispositif de manutention transporte une charge et que la flèche supérieure sert de contrepoids lorsque le premier dispositif de manutention transporte une charge.
Barthalow Henry D.
Patel Ramesh P.
Smith John K.
Grove U.s. Llc
Kidde Industries Inc.
Mcfadden Fincham
LandOfFree
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