EQUIPMENT FOR ERECTION OF BORED PILES Russian patent published in 2020 - IPC E21B7/02 E02D7/00 

FIELD: construction.

SUBSTANCE: invention relates to construction, namely, to drilling rigs used for erection of bored piles. Equipment for construction of bored piles, including telescopic mast with guide rollers for movement of its sections, bracket, hinged jointing telescopic mast and base machine, hydraulic drive for well drilling, winch drive and rope rewound through bypass units to move movable sections, swivels. Telescopic mast consists of one fixed and two moving sections, and guide rollers for movement of mast sections are arranged inside and outside mast, on upper movable section there is holder, on which upper carriage is fixed, on which hydraulic drive is located. Equipment also comprises lower carriage for movement of hydraulic drive of well drilling along fixed section of mast, chain drive located on lower carriage and moving it due to chain, hollow screw connected to hydraulic drive by means of swivel, feeding concrete for construction of pile, located at the bottom section resting rest to prevent the hollow screw skewing, a push mechanism arranged on the two carriages for the hydraulic drive movement, made in the form of pressing and mating parts, fixing mechanisms for the upper carriage fixation on the holder or on the lower carriage.

EFFECT: possibility to vary overall dimensions and reduce time for mounting and dismounting.

1 cl, 8 dwg