GRIPORGAN VID EN ANORDNING FOR NEDSENKNING OCH UTDRAGNING AV STANGFORMADE ELEMENT I MARK

摘要

The tensioning device has a housing (1) with openings (2) in the side wall and with an axial conical space (3) going right through. In the space (3), wedging members (4) are accommodated. In the openings (2), levers (8) are arranged whose inner ends touch the wedging elements (4). A stop bush (9) with the bore (10) is provided on the outer surface of the housing (1). The stop bush (9) is secured against downward displacement by a rubber damper (11) which is located in the bore (10) and is supported on the outer ends of the levers (8). Using the tensioning device, above all flexible rod-shaped elements can be sunk into frozen and dense soils.