14
1
2
3
4
5A 6A
7
8
9
10
11
12
Fig. 3.5
PROSEM P
6B5B
OVERVIEW
1
2
3
4
5A 6A
7
8
9
12
11
13
Fig. 3.6
PROSEM P
BASIC
6B5B
1
2
15
4
6A
16
8
9
10
11
12
Fig. 3.7
14
PROSEM P
BALANCÍN
3.5 METERING UNITS PROSEM P
1- Seed hopper.
2- Planting depth controller.
3- Press wheel: compresses the earth on the fu-
rrow and controls the planting depth.
4- Metering box: provided with a seed selector
in order to perform single-seed sowing.
5A- Seed-covering device: it closes the furrow
for the share (6A).
5B- Seed-covering device: it closes the furrow
for the high share (6B).
6A-
Share: it forms the furrow in which the seed
will be placed. For standard planting depth.
6B- H
igh share: they form the furrow in which the
seed will be placed. For very deep planting.
7- Shoe: helps to break the supercial earth
crust.
8- Clod remover: it removes the clods from the
way of the depth control wheels.
9- Parallelogram: allows the metering units to
move vertically to adapt to the terrain’s irre-
gularities.
10- Lever to adjust the unit’s pressure: it adjusts
the load pressure exerted by the share (6A
and 6B) onto the ground.
11- Sowing exclusion mechanism: it allows to
couple the unit in raised position in order
to exclude a metering unit.
12- Transmission group: transfers the main
axle’s motion to the metering box in order
to turn the seed disc.
13- Metering unit’s pressure tensioning spring:
it adjusts the load pressure exerted by the
shares (6A and 6B) onto the ground.
14- Lever to adjust the angle which aects the
bearing of the press wheels on the ground.
15- Press wheels: they cover the furrow where
the seed has been placed.
16- Planting depth control front wheel.