Patent ID: 6557276
Filing Date: 2003-05-06
Classification: B66F,E02F

Abstract:
In an earth-moving machine having a frame; a lifting arm, which is fitted such as to rotate about a first shaft; a lifting unit, which is fitted such as to rotate around a second shaft, substantially parallel to said first shaft; a first actuator cylinder, which can impart to said lifting arm oscillation around said first shaft; and an orienting device, which can maintain said loading unit in a pre-determined angular position during oscillation of said lifting arm, and is provided with a (second actuator cylinder, said first and second actuator cylinders having respective longitudinal shafts, which are substantially parallel to one another, and being hinged on said frame and lifting arm, respectively, at a third and a fourth shaft, which are substantially parallel to one another and to said first and second shafts, the improvement comprising:mechanism connecting said first and second actuator cylinders mechanically to one another to increase the resistance of said second actuator to the load generated on the second actuator cylinder by said lifting arm, said mechanism including a first tubular member mounted on said first actuator cylinder, a second tubular member mounted on said second actuator cylinder to be positioned in register with said first tubular, and a connector interengaging said first and wherein said first and second tubular members and said connector each have a longitudinal axis which is substantially parallel to said longitudinal shafts second tubular members to mechanically connect said first and second actuator cylinders wherein said first and second tubular members and said connector each have a longitudinal axis which is substantially parallel to said longitudinal shafts.