Iveco EUROCARGO, Инструкция по эксплуатации

Страница: 131 / 226

EUROCARGO Euro 6
–
APPLICATIONS OF SUPERSTRUCTURES
APPLICATIONS OF SUPERSTRUCTURES
3.11 CONSTRUCTION OF BOX TRUCK BODIES
41
–
Printed 603.95.747
–
1st Ed. - Base 12/2013
●
the interchangeable superstructure must adhere all along the chassis or at least a large surface area of the suspension connec-
tion zone;
●
the connection devices, of a suitable number, must be secured on the vertical rib of the side members;
●
the lifting devices must be anchored so as to transmit limited stresses to the frame.
3.11 CONSTRUCTION OF BOX TRUCK BODIES
A structure consisting of box section longitudinal and cross members (see Figure 3.15) may be used for connection to the chassis
of the vehicle. Dimensions as indicated in Table 3.4 may be used for longitudinal sections.
Where cross members spaced at a distance not exceeding 700 mm from one another are used for the construction of the floor,
and these members are adequately connected to form a sufficiently rigid, self-bearing floor, it may not be necessary to use longit-
udinal sections. In this case, however, an auxiliary frame must be installed behind the cab with suitable dimensions and of adequate
construction (with stiffener cross members and diagonal braces) for the capacity of the winch.
To ensure the stability required for the cross members and avoid stiffening the front part of the vehicle chassis excessively, con-
sider the indications given in the previous paragraph "Box section dimensions" (
➠
Page 5).
3.12 TILT BEDS (BREAKDOWN RECOVERY)
Using a tilt bed typically subjects the chassis to considerable stress. The vehicle used should therefore specifically indicated for this
application. These vehicles are listed in Table 3.5 together with the indicative characteristics for the counter chassis necessary
Where a very long bed is necessary, it is preferable to use a vehicle that already has a sufficiently long wheelbase rather than create
a long overhang.
The counter chassis must be suitably sized and stiffened at the rear with boxing and diagonal crossbraces (see Figures 3.5 and 3.6).
Connections to the chassis must be elastic (brackets or supports) at the front end and stiff at the rear end (cleat plates, see Figure
3.12) to allow the additional structure to contribute more effectively towards the rigidity of the assembly.
The rear tilt pivot must be installed on the counter chassis, and must be situated longitudinally as close as possible to the rear sus-
pension mount. To prevent the risk of the tilt bed compromising vehicle stability when operating and to avoid excessively increasing
the stress sustained by the chassis, the distance between the tilt pivot and the rear suspension mount must comply with the spe-
cifications given in Figure 3.17. Should this not be possible, the counter chassis profiles must be larger than normal and additional
stiffening must be applied to the rear.
The position of the lift system must be defined with particular attention to protect the structural integrity of the rams and permit
a precise and practically location for the mountings. The ram should preferably be situated in the most practical position available
ahead of the centre of gravity of the combined body and payload in order to reduce localised load.
The bodybuilder must equip the vehicle appropriately to ensure stability during bed tilting manoeuvres.
All equipment and structures must comply with any applicable national legislation.
3.13 VEHICLES FOR COUNCIL, FIRE SERVICE AND SPECIAL USES
The outfitting of vehicles for municipal use (compactor trucks, road rollers; road cleaning vehicles) in many cases require:
●
the realization of a particularly robust counter chassis towards the rear and elastic type connections to the chassis towards the
front of the vehicle;
●
shortening of the rear overhang of the chassis.
When very short overhangs are necessary, the chassis may be shortened immediately downstream of the rear spring support
(or after the bar coupling in the case of air suspension), thus keeping intact the connection to the chassis of the crossbar ap-
plied therein;
●
the vertical placement of the exhaust, behind the cab;
●
the implementation of rear suspension with greater rigidity or realized with asymmetric springs;
●
a new arrangement of the rear lights.