A CATERPILLAR-DRIVEN EXCAVATING MACHINE EQUIPPED WITH A SEPARATE WORKING TOOL
A caterpillar-driven excavating machine comprising an arrangement (9) manoeuvreably mounted on the under-carriage (4) and comprising a working tool (10), preferably a gripping tool (10), intended to grip around a post, and a control unit (14, 16) connected between the tool (10) and the machine. Figure 3 illustrates the arrangement (9) in a retracted, protected position for transport purposes. The distance setting of the tool (10) can be adjusted by extending a first part (14), with the aid of a hydraulic motor (12), and by advancing a second part (16) with the aid of a hydraulic piston-cylinder device. Lateral and height settings of the tool (10) are adjusted with the aid of a guide tube (17), two lateral control means (18) and two height control means (20) respectively, independently of the excavating function.