ROSTA
2.32
Oscillating Mountings
ROSTA guiding rods for “Flip-Flow” two mass shaker systems
ROSTA
Oscillating Mountings
and Accessories for Customized
Applications
Free oscillating screening systems with counter-mass frames
and directly actuated
flexible screen mats
offer the
great benefit of the
mesh self-cleaning.
Furthermore, the
flexible mats generate a
very high
and
wide material
throw
on the screen deck. In these systems the counter-mass
m
2
does usually overswing the screen-box mass m
1
at the
ratio of 2 : 1 generating the so-called “Trampoline-Effect”
with wide throws and the self-cleaning of the screen meshes.
For the elastic suspension and the linear guiding of the
counter-mass frames in “Flip-Flow” systems ROSTA offers dif-
ferent guiding-rods and spring accumulators, which are sup-
porting the phase-shifted acting of the two masses. (Please
ask for our manual
“Dual Amplifying Systems”
).
ROSTA rocker arms AS-P and AD-P with
shifted fixation flanges (30° position)
The fixation flanges of the standardized ROSTA single and
double rocker arms type AS-P and AD-P are installed at right
angle (90°) to the rocker arm axis. The practical experience
showed that most of the shaker manufacturers install the rocker
arms at inclination angle of 30° out of the vertical line to obtain
an ideal combination of fast material feeding and high screen-
ing throw.
In case of very concise mounting conditions with low-pitched
feeding troughs and slim machine frames and counter-masses
the right-angled fixation flange sometimes protrudes the ma-
chine structure – and in extremely crowded constructions a bolt-
ed assembly through both flange bores is simply impractical.
For such applications ROSTA offers as
customized parts
AS-P and AS-D rocker arms with fixation flanges staying 30° to
the rocker arm axis allowing a very low mounting option of the
rockers on trough and frame. Due to the rocker installation
by
pairs
it is necessary to order
right
and
left hand
execution
of the relevant rocker arms.
m
2
m
1