HAMMER FOR CONSTRUCTION ELEMENTS SUBMERSION IN SOIL Russian patent published in 2009 - IPC E02D7/08 

FIELD: construction.

SUBSTANCE: invention is related to the field of construction and is intended for ramming of piles, sheet piles, metal pipes in soil in vertical direction. Hammer comprises body, striker installed in it with the possibility of axial displacement, anvil stand combined with cap connected to body, drive, which is connected by flexible element to striker and fixed on frame. In upper part of body along its perimetre there is annular groove arranged on end, and annular shock-absorbing device is located. Frame has annular projection along lower end surface, which is installed in specified annular groove of body and rests on annular shock absorbing device. Frame is fixed on body with the possibility of axial displacement. Cap on lower end has seat, with which is rests on submerged construction element via shock absorber. In upper part of anvil stand there is cylindrical cavity arranged, which is filled with damping element. Inside of it conical cavity is created, in which rigid element is installed with the possibility of axial displacement. It has conical shape in the middle part and is installed with the possibility of upward displacement relative to damping element and compression of the latter at the moment of striker hitting anvil stand. Upper end of rigid element with thread is pulled into axial opening of metal flange and is equipped with nut. Flange is installed in annular bode of anvil stand and fixed in its walls by means of splines that protrude along its external circuit. There are long grooves arranged along circuit of cylindrical cavity in anvil stand to its annular bore, number, width and installation pitch of which match the number, width and installation pitch of flange splines.

EFFECT: increased reliability of operation and reduction of created noise due to reduction of dynamic loads.

3 cl, 5 dwg