DRILLING PLANT Russian patent published in 2005 - IPC

FIELD: mining industry.

SUBSTANCE: drilling device includes a rotator and hoisting gear, consisting of two force hydraulic cylinder with separator ring between them, through which rod passes, provided with pistons mounted in cylinders. Hoisting mechanism also includes fixed and moveable rollers and flexible links. Moveable rollers are placed inside the hollow of force cylinders and are fixed on outer surfaces of pistons, and fixed ones - on outer surfaces of end covers of cylinders. Force cylinders are made of different diameters, while cylinder for hoisting drilling columns greatest diameter. Plant is provided with two bars, fixed on upper and lower end covers and made in form of guides for rotator, separator ring and end covers are provided with fixing assemblies on front and back supports of post and hydraulic cylinder for raising the post to working position.

EFFECT: higher efficiency, simplified construction.

3 dwg