Multipart connecting rod for a large diesel engine

摘要

A multipart connecting rod forming the connecting member between a crankshaft of a large diesel engine and a trunk piston has a first point of separation in the area of the crankpin bearing. A second point of separation occurs in the area of the connecting rod, the upper part carrying the small end of this being connected to the bottom part of this by a screw connection. The second point of separation of the connecting rod also lies close to the transition from the connecting rod to the small end. The two connecting rod parts are joined by way of a connecting nut, which acts with an upper inside thread on an outside thread of a flange on the upper connecting rod part and with a lower inside thread, separated from the upper by a web, acts on the outside thread of a bottom flange on the lower connecting rod part. Both outside threads have a different pitch. As a result of these different thread pitches, which nevertheless turn in the same direction, when the connecting nut is tightened both connecting rod parts are moved towards one another until both come to bear on one another with their end bearing surfaces. Finally means are also provided in the area of the second point of separation for centring of the two connecting rod parts and securing them against torsion.