E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
E02F 9/18 (2006.01) B66C 23/74 (2006.01)
Patent
CA 2224703
A device which facilitates mounting and dismounting a counterweight and is inexpensive. The device comprises hydraulic cylinders (41, 42) mounted on an upper swivel (23), a first cable (55) connecting tip ends of rods (45, 46) of the hydraulic cylinders (41, 42) to a boom (31), and a second cable (58) connecting the tip ends of the rods (45, 46) of the hydraulic cylinders (41, 42) to a counterweight (28), wherein the counterweight (28) can be hung up and down by expansion and contraction of the hydraulic cylinders (41, 42) and rising and falling of the boom (31).
L'invention concerne un dispositif de faible coût qui permet de monter et de démonter aisément un contrepoids. Ce dispositif se compose de cylindres hydrauliques (41, 42) montés sur un dispositif pivotant supérieur (23), d'un premier câble (55) reliant les extrémités des tiges (45, 46) des cylindres hydrauliques (41, 42) à une flèche (31), et d'un deuxième câble (58) reliant les extrémités des tiges (45, 46) des cylindres hydrauliques (41, 42) à un contrepoids (28). Le contrepoids (28) peut être accroché de sorte qu'il soit soulevé et abaissé par l'extension et l'escamotage des cylindres hydrauliques (41, 42) et le soulèvement et l'abaissement de la flèche (31).
Ltd. Komatsu
Osler Hoskin & Harcourt Llp
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