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3.2 THE STABILITY OF THE EQUIPMENT IN ROAD
TRAFFIC
When a equipment is coupled to a tractor, so becoming an integral
part of it for the purposes of road travel, the stability of the equip-
ment-tractor complex may change and cause driving or operating
diffi culties (rearing up or side-slipping of the tractor). The condition
of equilibrium can be restored by placing a suffi cient number of
ballasts on the front of the tractor so that the weights on the two
tractor axles are distributed suffi ciently evenly.
To work in safety the instructions given in the highway code should
be followed; these prescribe that at least 20% of the weight of
the tractor alone should be borne by the front axle and that the
weight on the arms of the hoist should not be more than 30% of
the weight of the tractor itself. These factors are summarized in
the following formulas:
Z >
The symbols have the following meanings:
(please see Fig. 9 for reference)
M (Kg) Mass weighing on arms off hoist with full load (weight +
mass, see cap. 1.3 Identifi cation).
T (Kg) Mass of tractor.
Z (Kg) Total mass of ballast.
i (m) Tractor wheelbase, that is, the horizontal distance between
the tractor axles.
d (m) Horizontal distance between the centre of gravity of the
ballast and the front axle of the tractor.
s1 (m) Horizontal distance between the inferior point of attach-
ment of the equipment and the posterior axle of the tractor
(equipment supported to the ground).
s2 (m) Horizontal distance between the barycentre of the equip-
ment and the inferior point of attachment of the equipment
(equipment supported to the ground):
-ARTIGLIO IDROPNEUMATICO - s2=820 mm
-ATTILA IDROPNEUMATICO - s2=740 mm
The amount of ballast that should be applied according to the
formula is the minimum required for circulation on the road. If for
reasons of tractor performance or to improve the set-up of the
equipment during operation it is thought necessary to raise these
values, please refer to the registration document of the tractor to
check its limits.
When the formula for calculating the ballast gives a negative result
it will not be necessary to add any weight. In any case, as long as
the limits of the tractor are respected, a suitable quantity of weights
may be applied in order to ensure greater stability during travel.
Fig.14
Z
T
0,2 T
i
d
36
USE AND MAINTENANCE
((M x (s1 + s2))-(0,2 x T x i)
(d+i)
M
S1
S2
3.3 SAFETY REGULATIONS FOR TRANSPORT ON
ROAD
ATTENTION
For road circulation, you must observe the regulations of the
Highway Code in your country.
Given the weight and size of the equipment, it is necessary to
moderate your speed when you are transporting it by road. It is
acknowledged that most of the damage that occurs to the structure
of agricultural machinery is caused during road transport: adapt the
transport speed to the condition of the road surface. The maximum
transport speed for the semi-mounted version is 25 km/h.
Warning: do not drive on the road with the support props
lowered.
ATTENTION
For transportation of the equipment, always follow the Manu-
facturer's instructions.
3.4 SAFETY REGULATIONS FOR PARKING
ATTENTION
- Parking the machine is a very dangerous operation this must
be performed by only one operator.
- Be very careful to carry out the whole operation following
the instructions.
- Do not remain in the area of action of the equipment.
The operation should be carried out on a solid, horizontal surface,
following the instructions given below:
- Lower the supporting base elements (1 Fig.12)
- Lower the hoist of the tractor.
- Lower the equipment by propping it on the ground;
- Lower the posterior cylinders by propping them on the ground;
- Disconnect the hydraulic pipes from the tractor distributors and
protect the quick couplings with the caps.
- Loosen and unhook the third point, following the fi rst and
second.
3.5 WORK
Be very careful in following the instructions for the whole
operation.
DANGER
cod. F07011061
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