3-16 BUILDING & MOUNTING THE STRUCTURES E UROCARGO Euro 4/5 Figure 3.13 1. Subframe - 2. Frame - 3. U-bolts - 4. Longitudinal transversal securing 3.3.6 Connection with cleate (shear resisting) plates to contain longitudinal and transverse forces This type of fixing shown in Figure 3.14 is achieved by means of a plate that is bolted or welded to the subframe and is secured to the chassis by bolts or rivets. This ensures regeneration following longitudinal and transverse thrust and provides maximum rigidity to the whole. When this type of joint is used, the following must be observed: - The plate must only be attached to the vertical web of the main sidemembers.
Before fixing ensure that the subframe is mounted correctly on the top flange with no gaps between the two mating surfaces. - Use of cleat plates must be confined to the central and rear sections of the frame. - The number of plates, thickness and number of securing bolts must be adequate for the transmission of the sections shear and bending moments. As a rule the thickness of the plate will be equal to that of the vehicles sidemember. These values can be correctly determined by calculation according to the necessary elements. Good results can however be achieved taking the following into account.
The shear resistant plates and the omega brackets which are standard on some models are generally sufficient for normal bodies such as fixed loading platforms, tilting bodies, concrete mixers, provided the conditions of paragraphs 3.3 and 3.4 are met and comply, in terms of dimensions and positioning, with the normal bodies. The shear resistant plates already fitted to the vehicles can on the other hand meet the requirements of all installations which cause small bending moments on the vehicle frame (e.g. tail lifts, reduced capacity cranes). Connections between frame and counterframe Base - January 2008 Print 603.93.431