Design parameters
According to UN/ECE Regulation No. 55:
Trailer mass reduced to the towing hook (coupling), S = 70 kg.
Horizontal force at the towing hook (coupling), D = 1.5 kN.
Design data
External forces
– FX = 1500 N, horizontal axial force;
– FY = 300 N, horizontal transverse force;
– FZ = 700 N, vertical force.
Imposed distances
| X1 [mm] | X2 [mm] | X3 [mm] | Y1 [mm] | Z1 [mm] | Z2 [mm] | YE [mm] |
|---|---|---|---|---|---|---|
| 80 | 220 | 150 | 550 | 180 | 200 | 60 |
Operating and design constraints
Operating constraints: type of vehicle it is fitted to: passenger car or light commercial vehicle; type of external loading: alternating, with shocks; temperature range (−30…40) °C.
Design and mounting constraints: hook mounting variant: ATDs/ATDj; protection against environmental factors: anti-corrosion; interchangeability at the towing coupling/hook; modularity: the imposed dimensions can be modified (reduced).
Environmental constraints: use of eco-friendly materials and technologies, recycling of materials, safety and protection of life.