HYDROBLOCK HAMMER Russian patent published in 2009 - IPC E02D7/10 

FIELD: construction.

SUBSTANCE: invention concerns construction industry and can be used for pile installation during construction of foundation bottoms for civil and industrial structures, bridge, pier and embankment construction, structure protection against undercutting erosion and for pile installation at a selected angle to the ground surface. The hydroblock hammer includes frame 1, handweel 4 with integral master clutch 5 computer-controlled using an instrument detecting permanent deformations of ground, pile sinkage and elastic vibrations of pile, and crank gear, hammer gear and common hydraulic system. The common hydraulic system is made of two independent closed loop hydraulic systems. One system is fitted with a dosing cylinder, chamber of which is connected to accumulator and main hydraulic cylinder 9 with two pistons, one of which is driven by crank gear 8 and the other piston with hammer head 10 located on the piston rod, and with clamping mechanism 11 opened by key rod 12 working in accordance with follower 13. The other system is fitted with hydraulic actuators for pile gripping and sinking, the actuators are installed in sliding piece 18 which comes into engagement with pile 23 through plungers 17 and transfers impact force pulse from the hydroblock hammer to install pile 23.

EFFECT: increased efficiency by using kinetic energy of inertial masses, impact energy control, impact frequency control and simplified maintenance and repairs of the hydroblock hammer.

6 dwg