Beyer - Swimming Type Portal Scaffolding Excavators

For the cobble operation, the gripper empties directly into the folding jaw. Larger impurities such as clay, boulders or pieces of wood if there are larger contaminants, an over-grain grate can be used.

The basic structure consists of two parallel pontoons, which are connected by a portal frame. The portal consists of four supports and a crane runway, on which a mobile winch works. The gripper is attached to the holding and closing rope ropes of the winches either as a hydraulic engine gripper or as a rope gripper.

A gripper game consists of lowering the open grab on the lake bottom, closing the gripper, booting into the final position near the winch, moving the winds over the tilt grate or about the barge as well as the subsequent opening of the gripper bowl and the emptying of the contents - either into the ship or into the funnel.