Appendix
117
In all operating conditions, protective tubes must have a sufficient
overlap, and their lengths must therefore comply with length values
given in the corresponding table.
Sectional tubes must also be sufficiently covered when the drive shaft
is stopped.
Fig. 145
:
Drive shaft length
MACHINES OPERATED IN A STATIONARY POSITION
(Pumps, lifting equipment, generators, dryers etc.)
Only to be used when coupled to the tractor.
If necessary, immobilise the tractor with blocks under the wheels.
The tractor must be coupled to the machine and positioned such that
the coupling angles are narrow and uniform.
Fig. 146
:
Stationary machine
MACHINES OPERATED IN A STATIONARY POSITION
(Pumps, lifting equipment, generators, dryers etc.)
Only to be used if the protective tubes are adequately covered.
In all circumstances, the maximum extension length L of the protective
tubes must never exceed the values given in the corresponding table.
All rotating parts must be adequately covered.
Fig. 147
:
Operation without
protective tube
SIMPLE CARDAN SHAFTS
Work with limited and uniform angles (α
1
–
α
2
).
On tight bends, joint angles can be very wide, but must not exceed the
maximum articulation angle of 45°, even if they are uniform. If the
angles are too large or non-uniform, switch off the PTO. See
"Application characteristics".
Fig. 148
:
Stationary machine
WIDE-ANGLE CONSTANT VELOCITY JOINTS
A wide-angle CV joint can briefly (for example when driving on bends)
reach wide joint angles (80° or 50° depending on joint type), without
creating torsional oscillations.
If a wide-angle CV joint is present on the tractor side with a simple joint
on the machine side, it is strongly recommended not to exceed an
angle difference of 16° at 400 rpm and 9° at 700 rpm in continuous
operation in order to prevent irregular movements.
Fig. 149
:
Stationary machine
Fasten the safety device holding chains correctly.
Optimum operating conditions exist when the chain is positioned
radially relative to the drive shaft.
When setting the chain length, check that the deflection angle is
ensured in all working, transport and travel positions. If chains are
excessively long, there is a risk that they could wind around the drive
shafts.
Fig. 150
:
Stationary machine
