MKT V-22/HP-380T4, Operating, Maintenance And Parts Manual, Page: 4 / 73

I. INTRODUCTION
The MKT V-22/HP-380T4 Hydraulic Vibratory Pile Driver/Extractor System is used
for installing or removing piling. The three major components of an MKT V-22
Vibratory Pile Driver/Extractor include rotating eccentric weights housed within a
gear box which generates the vibratory forces to drive or extract piles, a clamp
housing to transmit vibratory forces to the pile section, and an elastomer suspension
to isolate the vibratory forces from the crane line.
There are two rotating eccentric weights in the V-22 mounted in special heavy duty
cylindrical roller bearings. A fixed displacement piston-type hydraulic motor is used
to drive a pinion shaft and gears mounted directly to the eccentric weights. The
gearing system maintains proper timing of the eccentrics during operation. When
operating within its load capabilities, the V-22 vibrator is designed to deliver a driving
force of about 100 tons to a pile at a rate of 1,650 vibrations per minute. The HP-
380T4 hydraulic power unit is correspondingly designed to maintain the necessary
hydraulic flow and pressure to the V-22 vibratory hammer.
The V-22/HP-380T4 system can be controlled from the control panel or remotely by
a hand held pendant. Either set of controls allow the operator to start and stop the
hammer, control the clamping on and off the piles, and provides a green light
indicator for complete clamp closing.
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