Roller Opposite Forces Type Automobile Brake Tester Key Technical Parameters’ Experimental Research

Through the study of using opposite forces type desktop method to detect theoretical analysis of automobile braking performance and real vehicle test, proposing about roller opposite forces type automobile brake tester’s roller mechanism, roller surface line speed, wheel slip ratio, drive motor power and key technical parameters’ indicators and requirements. Research indicates, the diameter of the roller should be controlled in the range of 240–245 mm, the surface linear velocity of the roller surface is 2.2–2.8 km/h; in order to ensure the maximum braking force collected by the brake table, the wheel slip ratio is 25–35%; roller center distance design based on loading capacity, wheel diameter, formed angle, for roller brake table with rated load capacity of 3 t, 10 t and 13 t, the center distance of the roller is 430 mm, 450 mm, 470 mm, and the dimensional error is ± 10 mm. The height difference between the main and auxiliary rollers should not exceed 30 mm, and the dimensional error is ± 2 mm. Considering the influence of loading capacity and roller surface linear velocity on wheel slip ratio, the power reference value of the roller single-side drive motor is given. Through the Calculation of the roller mechanism and use heavy multi-axis vehicle loading brake detection method, for the roller brake table with load detection capability, when installing, the height of the busbar on the auxiliary roller is 40–45 mm from the ground level is well. It is determined that the loading lift height should be no less than 200 mm from the ground level.