SIDE SWINGING, TWIN-CUTTER OVERBURDEN EXCAVATOR

The ends of the arms (1) of the gantry of an overburden excavator each have a horizontal bolt (3) for a frame (4) of the drive, on the axis of rotation (5) or drive shaft of which is mounted a rotary cutter (6) in the form of a cutter drum. The axes of rotation (5) of the rotary cutters (6) are oriented approximately parallel to the plane of symmetry (longitudinal axis) of the conveyor belt (2). The height of the frame (4) with the rotary cutter (6) can be adjusted in relation to the plane of the roadway by the length adjuster (7) in the form of a hydraulic or pneumatic cylinder, which is located between a bearing lug (8) of the arm (1) and a bearing lug (8a) of the frame (4). The rotary cutters transport the material via a transverse conveyor (9) to the conveyor belt (2).