Crank drive

Details Crank drive Crank drive

F - Mech Eng,Light,Heat,Weapons

16

C

F16C 3/06 (2006.01) F16C 9/04 (2006.01)

Patent

CA 2682995

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 thebearing surface of the big end (201) features a convex profile being in close contact with the concave profile of the crank pin (102).

L'invention concerne un dispositif comprenant un vilebrequin (100) et au moins une tige de poussée (200) ayant une grande extrémité (202) montée sur un maneton (102) du vilebrequin (100). Le maneton (102) et la grande extrémité (201) de la tige de poussée (200) comprennent des surfaces de paliers (108, 202) qui sont en contact rapproché les unes avec les autres dans une zone de portance et qui supportent les forces agissant entre la grande extrémité (201) de la tige de poussée et le maneton (102) lorsque le dispositif fonctionne. Selon l'invention, la surface de palier (108) du maneton (102) dans sa zone de portance présente un profil concave dans la section longitudinale de l'arbre et la surface de palier de la grande extrémité (201) présente un profil convexe qui est en contact étroit avec le profil concave du maneton (102).

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