Mobile universal working appliance especially for building sites has two-segment articulated arm folded flat on chassis when not in use, but with wide working area

摘要

The appliance has a chassis with seat, drive, and two-segment articulated arm (5) with two hydraulic cylinders. The first cylinder (11) is linked with its piston end to a joint (12) on a first segment (6) of the arm. The second cylinder (14) is linked with its base end to a joint (16) on the chassis (1). Four joints (8,10,16,15) define a four-bar linkage, with hinge points arranged, so that the articulated arm engages compactly on the chassis when folded, but gives the extended arm a working range with higher power performance.