Hydraulic and earth engineering – Miscellaneous
Patent
1990-10-16
1992-05-26
Taylor, Dennis L.
Hydraulic and earth engineering
Miscellaneous
173176, 405 40, 405 45, E21D 1900
Patent
active
051161648
ABSTRACT:
Device (27) to load reinforcement rods, which is suitable to cooperate with an excavation equipment (14) in providing lengthwise reinforcements in tunnels, particularly in excavations of a great depth amounting to about twenty meters or more, the excavation equipment (14) being borne on an excavator machine (10) and being able to rotate by an angle "alpha" from one or the other of two lateral inactive positions (A-B), the excavation equipment (14) comprising a drilling head (19) suitable to cooperate alternately with drilling means (20) and with the rods (25), the device consisting of at least one movable arm means (29) connected (28) to the excavation equipment (14) and lodging shaped movable sector means (32) and shaped clamping means (33), both shaped means (32-33) being connected to second and third actuation means (35-38) for cooperation therewith and with the at least one movable arm means (29) in positioning, clamping and unclamping the drilling means (20) and the reinforcement rods (25), the at least one movable arm means (29) being connected to first actuation means (31) for cooperation with the drilling head (19) of the excavation equipment (14) in the movement of the drilling means (20) and reinforcement rods (25).
REFERENCES:
patent: 794635 (1905-07-01), Moir
patent: 2067711 (1937-01-01), Killmer
patent: 2300167 (1942-10-01), Osgood
patent: 3506075 (1970-04-01), Attebo
patent: 4226559 (1980-10-01), Prebensen
patent: 4473325 (1984-09-01), Beney et al.
patent: 4785892 (1988-11-01), Luen
Casagrande SpA
Taylor Dennis L.
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