Abstract: The device has a frame element of light construction which carries an abutment plate. The latter comprises frictional material and affords an abutment surface whose coefficient of friction is set at 1.15. If torsional distortion of the frame element should occur during operation, the abutment plate permits sliding movement of the abutment surface on an opposing surface on the tipping hopper. The abutment plate is thus kept free of transverse stresses and is thereby protected from premature destruction. However, it can damp rotary movements of the tipping hopper to a satisfactory extent and reliably guide them.

Abstract: In a fifth wheel with a multipart sliding segmental lining which is rotationally and fixedly arranged on a coupling plate. Comfort is improved and a high service life is made possible by the fact that the sliding segment lining comprises a frictional material, the coefficient of friction of the sliding surface of the sliding surface lining being in the region of 0.1 to 0.2.