OPERATION
The NPK Vibratory Sheet Pile Driver derives its power source from the excavator on
which it is mounted. High efficiency is achieved through a combination of forces
developed by the sheet pile driver and carrier machine: impulse force, vibration and
downforce. A direct drive hydraulic motor rotates an eccentric mass at high speed to
produce impulse force and vibration.
Static downpressure from the excavator, plus the weight of the sheet pile driver,
produces downforce into the sheet being driven. As the compactor is pressed against
the material, the hydraulic pressure to the motor will rise.
For best results, the rubber mounts, which isolate the lower frame from the upper frame,
should be deflected no greater than one-half diameter, see below.
The rubber mounts (DY) should not be deflected so far that the upper frame (EG)
contacts the baseplate (bp1) of the lower frame. Do not overstress the rubber
mounts by applying heavy down pressure and pulling or pushing (ironing) with
the stick.
Fig. 1
(Deflection less than one-half of the rubber mount diameter.)
Fig. 2
(Upper frame hitting baseplate.)
To Next Page
Loading...