Referring now more particularly to the drawings, therein is illustrated a new and improved vibratory hammer/extractor constructed in accordance with the features of the present invention and generally referred to by the reference numeral 10. Power is supplied to operate the vibratory hammer/extractor 10 from a remote power pack 12 interconnected with the hammer/extractor via a bundle of hydraulic and pneumatic lines 14 as illustrated best in FIGS. 1 and 2. Preferably the power pack 12 includes a motive power unit such as a diesel engine 16 drivingly interconnected with an air compressor and a hydraulic pump (not shown) in order to provide both hydraulic fluid power and pneumatic control for the vibratory hammer/extractor 10 through the bundle of lines 14.
A portable remote control box 18 is connected to the power pack 12 to enable a hammer operator to control the operation of the hammer/extractor from different positions. In normal usage, the Hydraulic Impact Hammer is supported from above through an elongated flexible cable 20 extending downwardly from the boom of a crane 22 or gin pole, and the vibratory hammer/extractor 10 is detachably clamped to the upper end portion of an elongated piling or shoring member 24 extending into the earth 26 as illustrated in FIG. 1.
In accordance with the present invention, the vibratory hammer/extractor 10 includes an upper vibration isolating support element 28 joined to an intermediate level vibratory exciter 40 secured at the lower end to a pile clamping assembly 32 for detachably clamping the hammer/extractor to an upper end portion of a web 24a (FIG. 2) of an elongated piling or shoring member 24.