Tool driving or impacting – Hammer or tool shaft reciprocated by gripping means which...
Patent
1994-10-06
1996-03-05
Fridie, Willmon
Tool driving or impacting
Hammer or tool shaft reciprocated by gripping means which...
173 90, 405232, E21B 100
Patent
active
RE0351652
ABSTRACT:
A pile driving apparatus comprises a base frame (1) having a platform (3) for supporting ballast (5). The base frame (1) is equipped with a leveling device (7). The pile driving apparatus comprises a column (11) positioned perpendicular with respect to the base frame and supported by steel supports (13). At the top of the column (11) is provided a lifting point (17). A pile loading device consists of a cradle arm (19) which is pivotally mounted at point (21) to the base frame (1) at the lower end of the column (11). A hydraulic jack (23) is operative for moving the cradle arm for loading piles to the device. A hydraulic piston (29) bears a load onto a jack thrust plate (33), which plate is connected to a transmission plate (35) by means of a shaped plate (77). The higher end of the transmission plate is ridgedly connected to a pile thrust plate (39) means of another shaped (41 ). The column (11) is provided with an elongate slit (43) so that when the hydraulic piston (29) edges downwardly against the thrust plate (33) correspondly downward thrust is applied to the transmission plate. This enables piles having a length substantially the same as the column (11) to be driven into the ground.
REFERENCES:
patent: 3860122 (1975-01-01), Cernosek
patent: 4258796 (1981-03-01), Horning et al.
patent: 4475604 (1984-10-01), Albertson et al.
patent: 4555090 (1985-11-01), Averhoff
A. C. Meigh, Cone penetration testing methods and interpretation (1987), pp. v, viii, ix, x, xi, xii, xiii, 3-15, and 18-25.
Fridie Willmon
V-Pile Technology Luxembourg
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