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DAILY 4x4 ‒ GUIDELINES FOR BODYBUILDERS
APPLICATIONS OF SUPERSTRUCTURES
3.3 CONNECTION BETWEEN CHASSIS AND SUBFRAME
– Printed 692.68.999 – 3 Ed. - Base 08-2020
3.3.2 Connections with greater flexibility
When the connection needs greater flexibility (e.g. vehicles with high stiffness of the superstructure such as vans, tanks, etc., used
on winding roads or in poor conditions, vehicles for special use, etc.), hardware similar to the type indicated in Figure 8 should be
adopted in the area behind the driver's cab. Brackets accompanied by rubber plugs (1) or Belleville washers (2) or helical springs
(3) should be used.
256971
Figure 8
1. Rubber block
2. Belleville washers
3. Coil spring
Bear closely in mind that:
● the elastic element characteristics should be suited to the stiffness of the superstructure, the wheelbase and the type vehicle
use (irregular road conditions);
● stiffness must progressively increase for fixing points closer to the rear part of the chassis;
● the overall connection capacity must also include fixing points resistant to shear stress to be positioned near the rear suspen-
sion.
Consequently, the first fixing behind the cab must be made using a flexible system and one which, especially when the vehicle has a
long wheelbase, must also be replicated for the next fixing, modifying only the stiffness.
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