FIELD: construction engineering; applicable for attachment of vibratory pile driver to pile for its driving into ground. SUBSTANCE: cap includes body, hydraulic clamp with movable and immovable stops, the latter being body wall. Cap body is made of solid plate resting on pile head and closed belt in the form of load-bearing frame connected with solid plate by vertical load-bearing ribs. Movable stop of hydraulic clamp is made in the form of plate with wedge-shaped slides located in inclined guides secured to vertical load-bearing ribs and hinged with cap body by means of hydraulic cylinder. Movable and immovable stops of hydraulic clamp have changeable shoes pressing and centering the pile. EFFECT: reduced weight of cap and higher reliability of fastening of vibratory pile driver to pile with lesser force of hydraulic clamp. 2 cl, 2 dwg
