E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
E21C 25/58 (2006.01) E21B 4/00 (2006.01) E21B 7/00 (2006.01) E21B 7/28 (2006.01) E21B 19/24 (2006.01) E21D 9/10 (2006.01)
Patent
CA 2322693
A down-hole rock drilling machine (in-hole rock drilling machine) has a carrier sleeve (22) mounted in combined axial and radial bearings (21, 22 and 23, 24) and the carrier sleeve carries a guiding tube (30) laterally of the machine with an element (31) inbetween. The bearings (21, 22 and 23, 24) and the carrier sleeve (22) are held axially together between a shoulder (17) on the machine housing (11) and a drill bit holding sleeve (13). The machine housing will be subjected to strong vibrations, but since the bit holding sleeve (13) is screwed to the machine housing (11) and transmits the rotation to the drill bit (14), the carrier sleeve bearing arrangement will be second.
Une perforatrice de roches fond de trou (une machine de forage de roches située dans le fond du trou) comprend une gaine porteuse (22) montée dans des paliers porteurs mixtes axiaux et radiaux (21,22 et 23,24), la gaine porteuse supportant un tube (30) de guidage sur le côté latéral de la machine avec un élément (31) intercalé dans l'espace intermédiaire. Les paliers (21,22 et 23,24) et la gaine porteuse (22) sont maintenus ensemble de manière axiale entre un épaulement (17) prévu sur le carter (11) de la machine et un manchon (13) de retenue du trépan. Le carter de la machine est soumis en utilisation à de fortes vibrations, mais étant donné que le manchon (13) de retenue du trépan est vissé sur le carter (11) de la machine et transmet la rotation au trépan (14), le système de palier de la gaine porteuse est bien fixé.
Horman Magnus
G-Drill Ab
Ridout & Maybee Llp
Wassara Aktiebolag
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