Gaspardo VITTORIA 250, Использование и обслуживание

Страница: 35 / 92

USE AND MAINTENANCE
35
ENGLISH
cod. 19502210
g
Check, that there aren’t or can’t be interferences among the
mechanical members of the two machines. Especially check
the area between the hind roller and the coulter arms (Fig.
11).
4) Replacing the safety pins with the suitable locking pins (D,
Fig. 7).
5) Hook the tie-rods (M, Fig. 10) between seeder and roller; adjust
the same ones to put in order the equipment perpendicularly
to the ground (Fig. 11).
6) Hook the upper tie-rod (N Fig. 11) between seeder and rotating
harrow, by adjusting the length (L) according to the rear roller
utilized:
roller Ø 500 - L = 650 mm;
roller Ø 600 - L = 720 mm.
7) Lift completely the equipment and take away the support props
8) Lower the lift and place the combined equipment in an
operating position. Check that all the sowing parts oscillate
freely, including the drive wheels and the seed-covering
harrow.
ATTENTION
It is absolutely forbidden the circulation on public roads with
support props applied in parking position.
3.2 STABILITY OF PLANTING UNIT AND TRACTOR
DURING TRANSPORT
When a planting unit is coupled to a tractor, so becoming an
integral part of it for the purposes of road travel, the stability of the
planting unit-tractor complex may change and cause driving or
operating difficulties (rearing up or side-slipping of the tractor).
The condition of equilibrium can be restored by placing a sufficient
number of ballasts on the front of the tractor so that the weights
on the two tractor axles are distributed sufficiently 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 > (M x s)-(0.2 x T x i)
(d+i)
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
planting unit 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. The symbols have the following meanings:
(please see Fig. 12 for reference)
fig. 11
N
L
M
Kg
Mass weighing on arms off hoist with full load
(Technical data table)
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
s m
Horizontal distance between the centre of gravity of
the operating machine and the back axle of the tractor
fig. 12
Table 2
fig. 10
M