CHASSIS MODIFICATIONS 2-30 E URO C ARGO E URO 4 - 5 Example of calculation of class of coupling device for semi- trailers Consider a new EuroCargo ML120E25R/P vehicle of maximum weight 12t that has to tow a conventional trailer of maximum weight 8000 kg. From the following data 1. T = 12 t 2. R = 8 t we obtain: D = 9.81 · (12 · 8) / (12 + 8) = 47.0 kN Example of calculation of class of coupling device for central axle trailers Consider a new EuroCargo ML120E25R/P vehicle of maximum weight 10t that has to tow a central axle trailer weighing 9t with load surface length 8m and theoretical drawbar length 7m. Thus, from the following data 1. S is 0.9, i.e.
lower than values 0.1 ⋅ R = 0,9 t and 1 t 2. C = R - S = 9 - 0.9 = 8.1t 3. (T + S) = 10 + 0.9 = 10.9t 4. X 2 / l 2 = 64 / 49 = 1.3 we obtain: D c = 9.81 · (10.9 · 8.1) / (10.9 + 8.1) = 45.6 kN, e V = 1.8 · 1.3 · 8.1 = 18.9 kN Installing a Towing Device Base - July 2006 Revi - June 2007 Print 603.93.431