Coupling device for drive shafts

Details Coupling device for drive shafts Coupling device for drive shafts

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 9/06 (2006.01) F16D 1/033 (2006.01)

Patent

CA 2174259

A device for connecting the ends of two aligned sections of a hollow drive shaftwhich are rotatable about a common axis has first and second coupling members for securing to the ends of the drive shaft sections. At least two shearable bolts or pins connect the coupling members for transmitting torque between the drive shaft sections during operation and are arranged for balanced rotation of the coupling members under high r.p.m. conditions. The bolts, and not the drive shaft, will shear when the coupling members are subjected to a predetermined overload condition. The coupling members also include means for maintaining the shaft sections in axial alignment upon shearing of the bolts, and means for preventing the collapse of the shaft sections by restricting axial movement of the coupling members upon shearing of the bolts.

Un dispositif pour raccorder les bouts de deux sections alignées d'un arbre de commande tubulaire qui peuvent tourner autour d'un axe commun a un premier et un deuxième raccord pour fixation aux bouts des sections de l'arbre de commande. Au moins deux boulons ou goupilles de cisaillement relient les raccords pour transmettre un couple d'entraînement entre les sections de l'arbre de commande durant le fonctionnement et sont arrangés en vue d'une rotation équilibrée des raccords quand la vitesse de rotation est élevée. Les boulons, et non l'arbre de commande, se brisent quand les boulons sont soumis à une surcharge prédéterminée. Les raccords comprennent aussi un moyen pour maintenir les sections de l arbre axialement alignées en cas de cisaillement des boulons, et un moyen qui prévient la déformation des sections de l'arbre en limitant le mouvement axial des raccords en cas de cisaillement des boulons.

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