Abstract: A powered mobile test device for measuring loads supported by a running tire, said device being composed of a rigid frame carried by at least two carrying wheels to which a torque is applied, and having an axle which is fixed to the frame and which carries a test wheel for measuring the loads supported by said tire. The axle is connected to the frame by a loading actuator, a torque is applied to the test wheel, said torque applied to the test wheel is in the opposite direction to those applied to the carrying wheels, and a linkage system between the test wheel and the carrying wheels transmits at least some of the power developed by the braking torque applied to the test wheel or by the braking torques applied to the carrying wheels.

Abstract: The invention relates to a powered mobile test device for measuring loads supported by a running tire, said device being composed of a rigid frame carried by at least two carrying wheels to which a torque is applied, and having an axle which is fixed to the frame and which carries a test wheel for measuring the loads supported by said tire. According to the invention, the axle is connected to the frame by a loading actuator, a torque is applied to the test wheel, said torque applied to the test wheel is in the opposite direction to those applied to the carrying wheels, and a linkage system between the test wheel and the carrying wheels transmits at least some of the power developed by the braking torque applied to the test wheel or by the braking torques applied to the carrying wheels.

Abstract: A heavy vehicle comprising at least four mounted assemblies, intended to draw machinery. The properties of the vehicle satisfy the relationship: ( ? ? - ? · ( 1 - ? ) ) 2 + ( ? - h ? · ? 2 ) 2 > ( h ? · ? 2 ) 2 , where, ??=?/L, ? being the turning radius of the vehicle and L being the wheelbase of the vehicle, K is the proportion of the total vertical stiffness under the front axle with respect to the sum of the total vertical stiffnesses under the front and rear axles of the vehicle, ? is the ratio between the forward offset of the center of gravity and the wheelbase, h? is the ratio between the height of the draft line above the level of ground that forms a horizontal plane and the wheelbase of the vehicle, ? is the ratio between the longitudinal component of the resistive force applied by the drawn machinery to the vehicle, and the weight of the vehicle.

Abstract: A heavy vehicle comprising at least four mounted assemblies, intended to draw machinery. The properties of the vehicle satisfy the relationship: ( ? ? - ? · ( 1 - ? ) ) 2 + ( ? - h ? · ? 2 ) 2 > ( h ? · ? 2 ) 2 , where, ??=?/L, ? being the turning radius of the vehicle and L being the wheelbase of the vehicle, ? is the proportion of the total vertical stiffness under the front axle with respect to the sum of the total vertical stiffnesses under the front and rear axles of the vehicle, ? is the ratio between the forward offset of the centre of gravity and the wheelbase, h? is the ratio between the height of the draft line above the level of ground that forms a horizontal plane and the wheelbase of the vehicle, ? is the ratio between the longitudinal component of the resistive force applied by the drawn machinery to the vehicle, and the weight of the vehicle.

Abstract: A device providing a connection between a heavy vehicle and towed machinery which are arranged in a working position on ground forming a horizontal plane, the device allowing the movement of relative pitching between the towed machinery and the heavy vehicle. The distance between the instantaneous centre of rotation of the relative pitching movement of the towed machinery with respect to the heavy vehicle and the orthogonal projection of the instantaneous centre of rotation onto the horizontal plane is less than 1/9 of the outside diameter of the largest mounted assembly of the heavy vehicle and/or than 25 centimetres. Also disclosed is a method for towing machinery using a heavy vehicle.