Humbaur 3000 Series, Operating Instructions Manual

Page: 77 / 106

Load securing
75
MACHT’S MÖGLICH
Load securing / Operating the body
5
Tab. 1 Inertia force F
Tab. 2 Sample calculation
Tab. 3 Required load securing force (F
S
)
Inertia force F
Force which counteracts a change in the state of move-
ment
F
F
S
F
R
A - 064
Example:
– Inertia force F
G
= 2000 daN
– Maximum forward acceleration = 0.8 g
(1 g = gravitational acceleration 9.81 m/s
2
)
Result:
F
G
forwards = 2,000 daN x 0.8 g = 1,600 daN (kg)
The actually required load securing force F
S
is reduced by
the amount of frictional force F
R
(between the load and the
trailer floor) in the case of stable load materials.
Further information on friction-coefficient matchings can be
found in the VDI 2700 guideline.
All friction-coefficient matchings apply to clean surfaces.
Load securing force FS :
Force which has to be absorbed by the tie-down equipment
or the trailer body
Frictional force FR : Sliding friction coefficient x weight
force
Calculation formula: FS = F – FR
Example:
– Inertia force F
G
forwards: 1,600 daN
– Friction coefficient

o
= 0.3 (screen floor / pallet)
– Frictional force F
R
= 0.3 x 2,000 daN = 600 daN
Actually required load securing force
F
S:
= 2,000 daN – 600 daN = 1,400 daN (kg).