When
the excavator scoops the unscreened material, the screened material
goes into
the bucket and rocks are forced up the ramped screen, so that after the
scoop,
the rocks lie on top of the screen and the screened material lies in
the
bucket. When the bucket is partially dumped, the rocks roll off the
screen
first, into a pile or truck, or the side of the trench, then the bucket
is
dumped further, and the screened material is dumped out, completely
separated.
The specially designed screen is hinged so that every other finger
opens to
allow ease of dumping of the screened material. Simply dig, dump rocks,
move
over, then dump the screened material.
The advantages of the
SpeedScreen Bucket are as follows:
Increase
production: Units in the
field have shown that the SpeedScreen bucket can increase
your productivity 4 to 6 times as compared to stationary screeners.
Saves having to
haul in screened material: Dig the trench for the utility while
dumping the
rocks in a truck and the screened material in piles next to the trench.
After
the utility is placed in the trench, the screened material is right
there to be
used for finishing the job. The rocks may even be used for bedding.
No need to handle
the same material over and over: As shown with the above example,
instead
of digging out the trench, hauling it away, trucking in screened
material, or,
putting the mixture in a pile, then running the mixed material through
a mobile
powered screener producing two piles, and then moving the piles back
for fill,
you can do the whole operation as you dig.
Decreases overhead costs: No setup time and no need for powered
screening
equipment, maintenance, trailer space, etc..
