Excavator with swivelling bar mounted tool - has additional tool on swivelling double arm boom, with own drive

摘要

The excavator tool is mounted on the outer arm of a bar, with two or more arms, swivelling in a vertical plane, on an earth- moving machine, esp. excavator. Here a second tool is mounted on a two-armed boom swivelling in a vertical plane. A separate drive unit is provided for this tool and at least for the outer arm of the boom.S The boom can be formed by the inner arm of the bar supporting the first tool, and the outer arm is aligned parallel to the outer arm of the bar, both being hinged to the inner arm. The output is significantly increased, at slight extra cost of mfr.