Improvements in power sharing gear sets

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

Patent

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F16H 1/08 (2006.01) F16H 55/17 (2006.01)

Patent

CA 2339242

In a gear transmission, pairs (24, 26, 28) of helical gears are rotatably mounted on a drive shaft (22) for axial movement on the drive shaft (22). The pairs (24, 26, 28) of helical gears mounted on the drive shaft engage corresponding pairs (42, 39, 37) of helical gears rotatably mounted on a driven shaft (35) for axial movement on the driven shaft (35). Retainer members (57a, 57b, 59a, 59b) are located adjacent each end of at least one of the shafts (22, 35) to restrict axial movement by helical gears caused by axial separation between pairs (24, 26, 28, 42, 39, 37) of helical gears resulting from commencement of rotation of the drive shaft (22).

L'invention concerne, dans une boîte de vitesses, des paires (24, 26, 28) d'engrenages hélicoïdaux montés rotatifs sur un arbre de transmission (22) pour se déplacer de manière axiale sur l'arbre de transmission (22). Les paires (24, 26, 28) d'engrenages hélicoïdaux montés sur l'arbre de transmission coopèrent avec des paires correspondantes (42, 39, 37) d'engrenages hélicoïdaux montés rotatifs sur un arbre récepteur (35) pour se déplacer de manière axiale sur l'arbre récepteur (35). Des éléments de retenue (57a, 57b, 59a, 59b) se situent à côté de chaque extrémité d'au moins un des arbres (22, 35) pour limiter le déplacement axial des engrenages hélicoïdaux provoqué par une séparation axiale entre les paires (24, 26, 28, 42, 39, 37) d'engrenages hélicoïdaux causée par le début de rotation de l'arbre de transmission (22).

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