The invention relates to a device comprising a crankshaft (100) and least one conrod (200) having a big end (202) mounted on a crank pin (102) of the crankshaft (100). The crank pin (102) and the big end (201) of the conrod (200) comprise bearing surfaces (108, 202) which are in close contact to one another in a load-bearing area that bear the forces acting between the big end (201) of the conrod and crank pink (102) when the device is operated. According to the invention the bearing surface (108) of the crank pin (102) in its load-bearing area features a concavely curved profile in the longitudinal shaft section and the bearing surface of the big end (201) features a convex profile being in close contact with the concave profile of the crank pin (102).
申请公布号
EP1983200(A3)
申请公布日期
2008.12.17
申请号
EP20070018896
申请日期
2007.09.26
申请人
THYSSENKRUPP METALURGICA CAMPO LIMPO LTDA.
发明人
GUERREIRO, SERGIO STEFANO;FONSECA GALLI, LUIS ANTONIO;TAVARES DE OLIVEIRA, WALTER;DES SOUZA RODRIGUES, ALEX