DEVICE TO RAM DOWN FOUNDATION PIT Russian patent published in 1995 - IPC

FIELD: building. SUBSTANCE: device has cylindrical casing with a tail in its upper part with passages extended toward their upper parts and tips on their lower part, which are located along casing perimeter. An adapter is located between upper and lower parts. Cross section of the adapter is less than one of the casing and tip. Gaging member is made in the form of semi- rings installed on upper parts and able to be turned. Diameter of the member is larger than one of lower base of expanding part when the ram device is on load operation. A point of edge in any semi-ring being away for the longest distance from ram device axis during idle operation is projected in plane beyond tip contour and is not beyond contour limits of lower casing base. EFFECT: high productivity. 3 dwg