Pile driver

Details Pile driver Pile driver

1991-03-20

1992-12-08

Watts, Douglas D.

Tool driving or impacting

Automatic control of power operated means

Drive means responsive to condition of advance causing or...

173142, 173186, E21B 724

Patent

active

051689383

ABSTRACT:
A pile driver includes an attachment frame fixed to a work arm of appropriate construction equipment that serves as a base machine, a vibration cylinder actuated and controlled by an electro-hydraulic hydraulic servo-valve and mounted on the attachment frame through a rubber buffer, and a counter weight and a chucking means for gripping a pile to be driven K provided on the axial ends, that is, on the cylinder base and on the forward end of the piston, the pile being held in such a manner that the drive direction coincides with the axis of the vibration cylinder.

REFERENCES:
patent: 4056123 (1977-11-01), Kimura et al.
patent: 4487109 (1984-12-01), Burandt et al.

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