DEVICE FOR INJECTION OF RESIN FOR DRILLING DEVICE FOR INSTALLATION OF ANCHOR BOLTS IN SOIL Russian patent published in 2016 - IPC E21D20/02 E21D21/00 

FIELD: mining.

SUBSTANCE: series of inventions relates to installation of anchor bolts of rock bolts in soil/rock layers. Device for resin injection in connection with drilling device comprises an injector of fluid medium made with possibility of hydraulic connection with hollow drill stem of a drilling device for injection of one or more resin fluids into the drill stem. Wherein resin injection into the blast-hole through the drill stem before inserting the anchor bolt is provided. Injector includes connecting device designed with possibility of rotation and connected to the drill stem. Injector remains fixed when the drill stem rotates while working. Connector has a detachable connection with drill stem and is separated from the drilling device. Connector comprises first and second tight bearings. They ensure fluid-tight seal between the external surface of the drill stem and internal part of the connecting device. Connecting device also has outer case containing a mixing chamber inside the connecting device. Fluid injector also has a retainer detachably attached to the outer casing and the drilling device.

EFFECT: technical result is efficiency increasing of the lining support due to the usage of a self-tapping anchor bolt on a resin with single-step installation.

15 cl, 9 dwg