Piling hammer and method of driving a pile

Details Piling hammer and method of driving a pile Piling hammer and method of driving a pile

B - Operations, Transporting

21

J

61/89

B21J 7/06 (2006.01) E02D 7/08 (2006.01) E02D 13/10 (2006.01)

Patent

CA 1329882

ABSTRACT A hammer for driving a pile into the ground has a cylindrical barrel and an anvil sealed to an end of the barrel, a hammer piston mounted for reciprocation within the barrel towards and away from the anvil, hydraulic lift means to lift the hammer piston away from the anvil, and a switch, responsive to an increase in fluid pressure in the space between the hammer piston and the anvil, to activate the lift means. The invention includes a method of driving a pile into the ground, in which the pile-driving impact is transmitted to the pile via a confined quantity of hydraulic fluid and the weight by which the impact is applied is lifted, to a position from which to apply a further impact, in response to an increase in pressure in the hydraulic fluid.

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