PILE-DRIVING DEVICE Russian patent published in 1998 - IPC

FIELD: construction machinery and equipment. SUBSTANCE: device relates to auxiliary equipment of tower cranes. Pile-driving device allows for using tower crane in function of base machine for mounting of drilling equipment. This equipment can be used for drilling bore-holes in piling field for cast-in-place piles and for drilling pilot bore-holes in frozen ground for piles to be driven. Application of aforesaid device allows for reducing cost of preparing piling field to further operations. Activities can be realized in any weather. High productivity of work is achieved due to reduced time needed for aiming drilling tool at axis of bore-hole. Pile-driving device has boom which is made up of two bars. Freely displaceable over aforesaid bars are slide members of drilling tool. Upper ends of bars are rigidly connected together by rod. Lower ends of bars are rigidly mounted in rectangular frame which is provided with anchor screws located in its corners. Drilling tool is suspended from crane hook. EFFECT: higher efficiency. 2 dwg