Belt Forces
Belt Forces |
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Notes:
1) Belt forces are always with respect to one belt
2) Drive Pulley Force, FDP = 2Fp, or the
acceleration force, Fa, whichever is greater
The Belt Preload Force, Fp, can be set as an absolute value, or as a percentage of the maximum belt force excluding preload, Fb0.
Given:
Fa = 500 N Ft= 200 N Fg= Fcb= 0
Example with Belt Preload Force, Fp=700 N (an absolute value)
Example with Belt Preload Force, Fp, as 80% of maximum belt force excluding preload, Fb0
| Symbol | Description | Units |
|---|---|---|
| Fb | Total net force applied to belt | N |
| Fp | Preload tensile force | N |
| Fg | Force due to gravity | N |
| Ft | Thrust force | N |
| Fcb | Counterbalance force | N |
| Fa | Drive pulley acceleration force (force required to accelerate all masses and inertias including load, belt and counterbalance masses, plus driven and idler pulley inertias) |
N |