A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CORE BARREL HEAD, INNER TUBE ASSEMBLY PROVIDED WITH SAME, AND INNER TUBE RECOVERY METHOD
[Problem] To provide: a core barrel head capable of definitely recovering an inner tube in which a geological sample has been collected in a situation where excavation is performed in a horizontal direction and in a rising gradient direction; an inner tube assembly provided with said core barrel head; and an inner tube recovery method.[Solution] The present invention has: a main shaft 31 connected to the rear end of an inner tube 2; an inner fixing latch 32 that is axially supported at a substantially intermediate position along an axial direction of the main shaft 31; a latch disengagement slide tube 33 that is mounted to the outer circumferential surface of the main shaft 31 slidably in the axial direction and that disengages the inner fixing latch 32 from a locking groove 43 by inclining the inner fixing latch 32 against a biasing force; and a slide tube fixing latch 34 that locks the latch disengagement slide tube 33 at a position where the inner fixing latch 31 is in an expansion state and that disengages the lock of the latch disengagement slide tube 33 by being inclined by an overshot.
CORE BARREL HEAD, INNER TUBE ASSEMBLY PROVIDED WITH SAME, AND INNER TUBE RECOVERY METHOD
[Problem] To provide: a core barrel head capable of definitely recovering an inner tube in which a geological sample has been collected in a situation where excavation is performed in a horizontal direction and in a rising gradient direction; an inner tube assembly provided with said core barrel head; and an inner tube recovery method.[Solution] The present invention has: a main shaft 31 connected to the rear end of an inner tube 2; an inner fixing latch 32 that is axially supported at a substantially intermediate position along an axial direction of the main shaft 31; a latch disengagement slide tube 33 that is mounted to the outer circumferential surface of the main shaft 31 slidably in the axial direction and that disengages the inner fixing latch 32 from a locking groove 43 by inclining the inner fixing latch 32 against a biasing force; and a slide tube fixing latch 34 that locks the latch disengagement slide tube 33 at a position where the inner fixing latch 31 is in an expansion state and that disengages the lock of the latch disengagement slide tube 33 by being inclined by an overshot.
CORE BARREL HEAD, INNER TUBE ASSEMBLY PROVIDED WITH SAME, AND INNER TUBE RECOVERY METHOD
KERNROHRKOPF, MIT DIESEM VERSEHENE INNENROHRANORDNUNG UND VERFAHREN ZUR INNENROHRRÜCKGEWINNUNG
TÊTE DE CYLINDRE CENTRAL, ENSEMBLE TUBE INTERNE POURVU DE CELLE-CI ET PROCÉDÉ DE RÉCUPÉRATION DE TUBE INTERNE
MIYAKO SHIGERU (author)
2024-01-10
Patent
Electronic Resource
English
Core barrel head, inner tube assembly provided with same, and inner tube recovery method
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