Fifth wheel for truck truck and freight Trailer

摘要

(57) [summary] The present invention relates to a coupler for connecting the cargo trailer and the towing vehicle in the consolidated track. It not only has a connection for connecting the compressed air supply line and electricity between a truck trailer and towing vehicle wheel plate, the articulated truck, or bonded to (30) surface, coupling of the invention, or engagement consisting kingpin having an outer diameter and inner diameter. Supply line of the towing vehicle in the consolidated track leading to the supply line to the specified location in the cargo trailer male connector of the feed section of the female connector inside the kingpin (100) and (200). Male connector can be connected to each other and the female connector (11-15) and (21-25), configured as a rotationally symmetrical bushing respectively intermesh in pairs related to the supply line. With respect to each other and all of Bush (11-15,21-25) is arranged concentrically with respect to the axis of the kingpin. Each of the inner diameter large bush radially kingpin (11) and (20), respectively, I having a diameter that is smaller than half the diameter of the outside of the contact surface or junction of the kingpin.