Pile driver, pile drawer and/or drilling machine

Tool driving or impacting – With vehicle support for drive – Drive structure moved to nonuse position for transport

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Details

173 39, E21B 702

Patent

active

047858923

ABSTRACT:
A combined pile driver, pile drawer and drilling machine comprises a carriage (1), a turntable (1A) mounted on the carriage (1), support device (2), lifting device (4) and a mast system (5) comprising two mast units (3). The support device (2) comprises a tubular support bearing (9) which is hinged to the turntable (1A) at (6A) and the lifting device (4) comprises two hydraulic cylinder (6) which are hinged to the turntable (1A) at (6B) and to a bearing sleeve (9A) at (6C). The support device (2) further comprises a mast support (10) which surrounds the bearing (9) and extends through the sleeve (9A) and can be rotated about its own axis by means of an hydraulic cylinder (11) and a coupling (11A). Each mast unit (3) is mounted on the mast support (10) by brackets (14) and comprises a guide rail (13), a mast (12) which is slidable on the guide rail (13) by an hydraulic cylinder (15) and a cradle (30) which is movable on the mast (12) by an hydraulic feed cylinder (28). Each cradle (30) supports a rotary head or percussion head for a drilling tool or the like or a pneumatic hammer for pile driving. One of the masts (12) is also provided with a clamp (16) and a turning unit (17) for pile drawing. The machine can also be used as a crane. A hydraulic jack (37) is provided to support the weight of the mast system when the mast system is in a vertical position.

REFERENCES:
patent: 3172483 (1965-03-01), Spitzer
patent: 3181623 (1965-05-01), Lindgren
patent: 3357502 (1967-12-01), Elliot
patent: 3452829 (1969-07-01), Smith
patent: 3680412 (1972-08-01), Mayer et al.
patent: 3754604 (1973-08-01), Inaba et al.
patent: 3809169 (1974-05-01), Hunt
patent: 4147215 (1979-04-01), Hodge et al.
patent: 4403666 (1983-09-01), Willis
patent: 4586571 (1986-05-01), Rajakallio et al.

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