Iveco DAILY M.Y. 2012, Body Builder Instructions

Page: 142 / 252

4-4
POWER TAKE OFFS D
AILY
Base - 02/2012 Printed 603.95.241
General specifications
PTO transmissions
In respect of the transmission manufacturer’s requirements, particular care must be given to the kinematics (angles, rpm, moment)
from the PTO to the attached device during the design phase and dynamic behaviour during the production phase.
This means that:
- the forces which will be present during maximum power and torque output conditions must be considered when calculating
scaling
- equal shaft-end angles must be realised for good homokinetics (see Figure 4.1); these must be no more than 7”
- solution Z is preferable to W, as the loads on the bearings of the PTO and the driven equipment are lower. In particular, when
it is necessary to realise a transmission line with shafts inclined in the space according to an angle
ϕ
(as illustrated in Figure 4.2),
it must be remembered that the overall homokinetics can only be ensured if the intermediate shaft is fitted with forks offset by
the same angle
ϕ
and if the end angles
χ
1 and
χ
2 are equal.
For transmissions employing multiple sections, the instructions given at point 2.8.2 should be followed.
Solution Z
Solution W
91522
Figure 4.1
0
0
0
0
Figure 4.2
133340