Method for operating pile driver

Details Method for operating pile driver Method for operating pile driver

1976-07-06

1977-11-15

Purser, Ernest R.

Tool driving or impacting

Processes

61 535, 2541875, E02D 708

Patent

active

040581756

ABSTRACT:
Method and apparatus for forming piles in the earth with a pile hammer rig having a hoisting drum carried by a crane, driving and braking apparatus for the drum, a drop-weight, a hoisting rope leading from the drum for lifting the drop-weight, apparatus for selectively absorbing kinetic energy of the drum and rope disposed adjacent the drop-weight; apparatus for applying the drum brake prior to impact of the drop-weight; and a fluid swivel system for connecting the drop-weight to the hoisting rope.

REFERENCES:
patent: 2193293 (1940-03-01), Nichols
patent: 3749446 (1971-08-01), Doty
patent: 3938595 (1976-02-01), Swenson

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