WELL AND BORE PIT DRILLING MACHINE Russian patent published in 2013 - IPC E21B3/02 E21B19/86 

FIELD: oil and gas industry.

SUBSTANCE: machine includes a load-carrying frame from rolled metal, a drilling head that represents a rotator of the tool consisting of a hydraulic motor, a cylindrical reduction gear and a clamping chuck; hydraulic cylinders supplying the drilling head along guides; a fixed clamping chuck; a device for the frame turning in vertical plane; a sealing coupling for supply of flushing cooling water to a mine working and anchor posts. The drilling head housing and double-acting supply hydraulic cylinders are rigidly attached to each other so that all of them form a common link. Stocks-pistons with the ends fixed in end plates of the frame serve as guides in back-and-forth movement of that link. The stocks-pistons have hollow oil-piping structures that allow the working fluid passage into cavities of hydraulic cylinders and back.

EFFECT: simplifying the drilling machine design and reducing its weight.

2 dwg