DRILLING MACHINE Russian patent published in 2019 - IPC E21B7/02 

FIELD: mining.

SUBSTANCE: invention relates to the mining industry and construction and can be used for drilling of vertical and inclined wells during extraction of minerals by open method and other drilling and blasting operations. Drill rig comprises a machine compartment with a mast, a water tank and a driver cabin with a control panel, a caterpillar track, electrical equipment and a hydraulic system with an oil pump station equipped with a working fluid heating device. Hydraulic system comprises the main operation drives circuits, which include the feed mechanism drive contour, the machine leveling jack jacking circuit and the mast positioning, the auxiliary operations drive circuit, to which the right and left hydraulic cylinders of the upper key are related, hydraulic cylinders of the lower wrench, hydraulic cylinder of the device for blowing off the drilling fines, hydraulic cylinders of the rest and separator, as well as the servo control circuit. Hydraulic system of the machine comprises an additional unit of hydraulic control valves connecting the drive circuit of auxiliary operations to the servo control circuit or to the drive circuit of the feed mechanism with provision of continuous circulation of the working fluid along the contour of drives of auxiliary operations during operation of the drive circuit of the feed mechanism. At negative ambient temperatures, especially in permafrost conditions, working fluid of auxiliary operations of drilling machine hydraulic system continuously circulates working fluid.

EFFECT: thus preventing its freezing in the auxiliary operations drive circuit, which ensures uninterrupted operation of the machine, since manipulations on heating of main lines and hydraulic cylinders of the drive circuit of auxiliary operations in the hydraulic system are excluded, thus increasing its efficiency.

1 cl, 6 dwg