IMPACT ABSORBER FOR ROCK BOLT

IMPACT ABSORBER FOR ROCK BOLT

A self-drilling rock bolt (1) for drilling a drill hole (2) in a material to be drilled (3) using a percussive rock drill and reinforcing the material surrounding the drill hole is provided. The rock bolt (1) comprises drilling means (4), a rock bolt body (5) for bolting the drill hole, an end ancho...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: MÄNTTÄRI, Mr. Maunu, ESKO, Mr. Mauri
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Beschreibung
Zusammenfassung:A self-drilling rock bolt (1) for drilling a drill hole (2) in a material to be drilled (3) using a percussive rock drill and reinforcing the material surrounding the drill hole is provided. The rock bolt (1) comprises drilling means (4), a rock bolt body (5) for bolting the drill hole, an end anchor element (9) provided at the drilling end (7) of the rock bolt provided with anchor means for engaging with the material of the drill hole walls, and an impact absorber (26) arranged between the rock bolt body and the end anchor element to dampen the impact from percussive drilling.