Rice Lake Weigh Modules/Mount Assemblies - Manual (Page 46)

2-17
WEIGH MODULES Compression Canisters
Construction and Features
1) A heavy-duty ground base plate on which the load cell is
fastened. The base plate assembly is completed by two heavy-
duty “L”-shaped castings, one on each side of the cell.
2) A hardened load introduction plate which rests on the cell’s
load button.
3) The load introduction plate and another plate sandwich a thin
flexure plate which in turn is fastened at each side to the base
plate assembly. This flexure is horizontal and because of the
minimal deflection of the cell under load, has negligible effect
on the accuracy of the scale. The flexure holds the load
introduction plate rigid in a horizontal plane, thus preventing
the transmission of side forces to the cell.
4) A top plate is mounted to the scale. This plate is separated
from the “sandwich,” described previously, by Teflon pads.
This arrangement allows the top plate to move in a horizontal
plane. This is particularly important on a relatively long
vehicle scale.
5) This mount may be used on heavy-capacity vehicle scales
(truck and railroad track) or high-capacity vessel scales. It
may be used with the CP1 or CSP1 load cells in capacities from
10,000 lb to 200,000 lb.
6) This mount does not provide any checking to the scale;
horizontal stay rods will certainly be required. Vertical check
rods may be required for vessel scales.
7) The mount should be positioned so that the longest dimen-
sion of the flexure is oriented with the direction of traffic flow
and/or in the direction of maximum thermal expansion/
contraction.
Typical Application
MagnaMount ® Tank, Truck & Railroad
Track Mounts
Heavy-capacity vessels can be mounted successfully on large
compression mounting assemblies that use heavy canister load
cells. MagnaMounts, which are also used for truck and railroad
scales, have capacities to 200,000 lb per mount.
These mounts are cushioned somewhat by the low-friction pads
which allow the load plates to slide horizontally. The pads provide
some protection from shock loading. Load cells are hermetically
sealed for severe applications.
Horizontal check rods must be used with the MagnaMount. Addi-
tionally, vertical check rods may be required to provide lift-off
protection.
Allowable Movement
The MagnaMount shown in Figure 2-33 allows for an unlimited
amount of multidirectional movement in the horizontal plane
through sliding load plates that incorporate a low-friction Teflon
®
surface.
Figure 2-32: RLC Self-Aligning Silo Mount
Figure 2-33 Figure 2-34: MagnaMount canister mounts
Typical Application