Crankshaft with hollow pins

F - Mech Eng,Light,Heat,Weapons – 16 – C

Patent

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F16C 3/04 (2006.01) B21D 53/84 (2006.01) B23P 11/02 (2006.01) F16C 3/10 (2006.01) F16C 3/18 (2006.01)

Patent

CA 2002191

Abstract of the Disclosure In the case of a crankshaft with hollow pins, cross- sectionally distributed expanding sleeves inserted into the exit apertures of the main pins and crank pins in the crank webs. These sleeves generate a prestress in the material of the crank webs in order to increase the bending and torsional strength and to avoid the formation of cracks in the endangered shaft cross-section. Further expanding means in the pins extending along the length of the pins increase the natural frequency of the shaft in uncritical areas.

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