BUILDING & MOUNTING THE STRUCTURES 3-45 E UROCARGO Euro 4/5 Installation of concrete mixers 3.12 Installation of concrete mixers Applications of cement mixers must be made only on vehicles suited for this type of use and indicated in Table 3.16, where the minimum characteristics of the reinforcement structural element and the useful capacity of the drum are given; it is understood that the limits of the maximum masses admitted for the vehicles must be respected. When installing, besides respecting any prescriptions imposed by national regulations, bear in mind that:
- the cement mixer must be equipped with its own continuous steel chassis frame, in observance of point 3.1 so as to divide the concentrated loads on the chassis as much as possible. For the structural element of the subframe it is possible to use sections that, for the same modulus of resistance (Wx) and moment of inertia (Jx) no lower, enable reductions in height of the centre of gravity of the added structure (e.g.
boxed profiles or with upper flange facing outwards, see Figure 3.27); - there must be suitable bracings that provide the necessary rigidity in the connection between the concrete mixing equipment and its own standard chassis frame so as to release the chassis from the forces deriving from the particular geometric and func- tional configuration of the cement mixer.
The subframe must be appropriately stiffened toward the rear with suitable cross members or cross diagonals; Table 3.16 Figure 3.27 91486 1 Chassis frame 2 Reinforcement structural element with normal C-section 3 Reinforcement structural element with upper flange upturned 4 Related drum positions Installation of concrete mixers Print 603.93.431 Base - January 2008 Minimum section of the subframe Model Approximate capacity of the drum (m3) Modulus of resistance W x (cm3) Dimensions (mm) 3-3.5 83 180K 4-5 92 140 x 80 x 8