Rock anchor i.e. composite anchor for drilling equipment used in tunnel and mining industry, has cartridge including volumes having extrusion pistons such that adhesive is extruded from volumes by extrusion pistons towards static mixer

摘要

The anchor (1) has an anchor tube (2), an anchor tip (3), a static mixer (4), and a cartridge (5) introduced into the anchor tube. The cartridge includes two volumes (6, 7) separated by a partition (8), where each volume is filled with a fixing mass such as adhesive. The volumes include extrusion pistons (11, 12), respectively such that the adhesive is extruded from the volumes by the extrusion pistons towards the static mixer. The extrusion pistons are connected together via a connector (13).