BLAST HOLE RIG Russian patent published in 2015 - IPC E21B7/02 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to devices for drilling of blast holes in open pits, namely to rigs with dust suppression systems. The rig comprises a frame, the mast hingedly fixed on the frame, the rig frame bears a dust cleaner and a dust settling chamber connected among themselves by piping; the dust settling chamber is designed as housing with a blind and a case moving device which contains cylinders, a rig ramp joined with a rig mast and a rod connected by one of the ends with the chamber housing. The housing movement device is fitted with guides joined with the ramp, slides placed in directing and the rams connected to the corresponding rods of cylinders, and one of rams is hingedly joined with the housing, and another - with the rod.

EFFECT: improvement of sanitary and hygienic conditions of drilling and environment due to more tight contact of a blind to the ledge surface.

6 dwg