.~
I
1
1
2
Fig.
11
Fig. 12
G) Super-wide power har
ro
w
RE
50
and
RE
60:
1.
The super-wide power harrow
RE
50 and
RE
60
(Fig.
11
and 12) divided
into two machine halves with 5 m
(16,4
ft) and 6 m
(20
ft) working widths con-
sists
of
a rigid centre frame to which the two machine halves are pivotly hinged.
Each machine half
is
equipped with an oil-bath gearbox and
is
driven by
a central V-belt drive. The pivoting arrangement
of
the two machine halves
around the drive shaft of the two oil-bath gearboxes allows the super-wide
power harrow to be operated with the two machine halves
in
any position.
This design enables the super-wide power harrow despite its large working
width to be adapted
to
the contures
of
the field and for it to be swivelled
in
hydraulically to a transporting width
of
2.6 m (8,5 ft)
(Fig.
12).
2.
Attach the super-wide power harrow to the tractor
as
described
in
section
B,
point
2.
Horizontal adjustment of the lower link points
is
not necessary
because the long universal joint shaft allows the super-wide power
harrow to be attached
to
all tractors without difficulty.
In
addition,
an
elastic coupling
in
the universal
joint
shaft
is
not
necessary because
of
the V-belt pulley.
To
operate the two hydraulic cylinders of the super-wide
power harrow, the tractor must be equipped with
an
additional, hydraulic
connection with a single-acting control valve.
3.
The AMAZONE super-wide power harrow can
of
course also be used
in
combination with the AMAZONE packer roller which
in
addition
to
the
packing action and crumbling action guarantees accurate depth control
of
the super-wide power harrow. The packer roller
is
divided
in
the same way
as
the super-wide power harrow,
i.e.
a packer roller 2.5 m
or
3 m
in
width
is
attached to each machine half
of
the super-wide power harrow. The depth
control
is
carried out
in
the usual way
by
means
of
marking bolts (Fig.
11
/1
).
(See also section
B,
point
2).
A centre spreader
(Fig.
11
/2)
is
arranged
in
the centre between the two packer rollers which eliminates any ridges
of
soil.
15