| 摘要 |
An extrusion device for forcing out a mass ( 2 ) from a self-drilling chemical rock anchor ( 1; 46 ) for mine and tunnel constructions and including a motor-driven sleeve ( 21; 56 ) rotatably supported in the housing ( 12; 44 ) without a possibility of an axial displacement therein and having a receiving space ( 28; 58 ) for a free end ( 4 ) of the rock anchor ( 1 ) extending from the receptacle ( 24 ) for the rock anchor rotation-imparting means ( 3 ), which is provided at the first sleeve end ( 22 ), in a direction toward the second sleeve end ( 25 ) of the sleeve ( 21, 56 ) opposite the first end and having an inner cross-section smaller than a cross-section of the receptacle ( 24 ), and a feeding nozzle ( 31 ) extending through the through-opening ( 26 ) formed in the second sleeve end ( 25 ) of the sleeve ( 21 ) for feeding an extruding medium for forcing the mass ( 2 ) out of the rock anchor ( 1 ) and spaced from an inner profile of the sleeve ( 21; 56 ) to provide free space for the free end ( 4 ) of the rock anchor ( 1 ). |
