DEVICE FOR STUDYING SOILS Russian patent published in 1996 - IPC

FIELD: civil engineering. SUBSTANCE: device has hollow helical anchor pile, column of outer and inner rods with a probe coincide with the pile. Anchor pile is related with removable extension by stops. The extension is screwed on the hollow screw of the jack. Dynamometer is installed in screw cavity to be moved axially in through slots. Dynamometer is made in the form of frame with ledges and support prisms under leaf springs with plates. The springs are in contact with ball bearings of movable rods installed in openings of the frame. The plates come in contact with indicator legs of strain gages. Compression spring is installed between dynamometer and removable lid of the cavity. Hollow screw of the jack and removable extension are provided with rotary handles. Threaded lock is provided with a nut with rotary handles. Support bearing is placed between removable nut and removable lid. EFFECT: high reliability. 3 cl, 6 dwg