Control system for pile hammers

Details Control system for pile hammers Control system for pile hammers

1981-10-26

1984-02-07

Kazenske, E. R.

Tool driving or impacting

Drive controlled by relative axial movement of tool

173116, 173135, 173139, 91268, 91272, B23Q 500, E21C 500

Patent

active

044297513

ABSTRACT:
An automatic, fluid actuated, external control system for a pile hammer or the like is provided that can vary the operating stroke length of a pile hammer and that can be used to operate the pile hammer in either a continuous or single stroke mode. A series of axially spaced orifices in the hammer housing exhaust pressurized fluid from the housing in a sequence controlled by the position of the hammer piston within the housing. The orifices are coupled by conduit to a series of pressure sensitive valves external of the pile hammer. The pressure sensitive valves control the delivery and exhaust of pressurized motive fluid to and from the pile hammer in response to the position of the hammer piston within the hammer housing.

REFERENCES:
patent: 3082746 (1963-03-01), Kerridge
patent: 3133472 (1964-05-01), Zollinger
patent: 3881554 (1975-05-01), Cooley et al.
patent: 4062411 (1977-12-01), Adkins et al.

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