LOAD-CARRYING VEHICLE PART AND A WHEELED VEHICLE EQUIPPED WITH SUCH VEHICLE PART

The invention relates to a load-carrying vehicle part with a first and a second wheel pair (), which are suspended in a respective bogie element () on each side of a frame member (), a suspension () between each bogie element () and the frame member () on each side of the vehicle part to manipulate the frame member relative to the respective wheel pairs (), or support the frame member in a springing manner, each suspension () comprises a first and a second rocker arm (A, B), wherein the first rocker arm is located in front of the second rocker arm viewed in the normal forward direction of driving of the vehicle part, that each rocker arm (A, B) with its one end is pivotably in a joint () in the frame member () and with its other end is pivotably in a joint () in the bogie element () a first spring leg (A) and a second spring leg (B), wherein each spring leg with its one end () is articulately fastened to the frame member () and with its other end () is articulately fastened in a rocker arm (A, B), a motion conversion arrangement () capable of converting a rotary motion in a joint () for one of the rocker arms (A, B) to a forward and backward translation motion.