FACILITY TO FORM HOLES IN GROUND Russian patent published in 2003 - IPC

FIELD: construction of pile foundations, formation of holes in ground under embankments for passage of pipelines. SUBSTANCE: facility includes three hydraulic double-action cylinders: first with sharpened tip controls anchor anchoring nose part, second gives longitudinal motion and third controls anchor anchoring tail part of facility. Hydraulic cylinders are positioned uniaxially. Third hydraulic cylinder is fitted with sharpened tip, anchors come in the form interjoined levers. Free ends of anchor levers are employed to anchor nose part of facility and are hinged to piston and body of first hydraulic cylinder and free ends of anchor levers anchoring tail part of facility are linked to piston and body of third hydraulic cylinder. Assembled facility is suspended from vehicle at angle with ground surface and is located in guiding tube up to moment of its sinking into ground. EFFECT: simplified process of erection of foundation, enhanced productivity of process. 2 dwg