DEVICE FOR SCREWDRIVING OF PILES Russian patent published in 2009 - IPC E02D7/22 

FIELD: construction.

SUBSTANCE: device for screwdriving of piles is related to construction and may be used for erection of bearing foundations, fixation of various mechanisms and devices on soil, also under conditions of frozen soils in process of screwdriving of metal tubular piles. Device comprises spinner 1, reducer 2 and cartridge 3, which is arranged in the form of bushing with longitudinal slot and horizontal axis. Lower part of cartridge 3 is equipped with grips with handle and spring-loaded fixator, besides grips have dead slots. Horizontal axis is made with cylindrical protrusions at ends, and longitudinal slots of bush are arranged as stepped and closed. Device may additionally be equipped with the second horizontal axis, detachable pad made of two plates, in which holes are arranged for horizontal axes, at the same time in one of plates holes are made with figure shape, and at one end of horizontal axes there are slants arranged with similar figure shape.

EFFECT: invention makes it possible, due to reduction of time for pile preparation for lift, its fixation in cartridge, to significantly increase efficiency of works on piles driving, and also to improve conditions of work, since all works are carried out not at height, but on ground, in close proximity to area of pipe screwdriving.

2 cl, 10 dwg