Gearbox assembly
AssigneeVolvo Truck Corporation
InventorsKnut GREEN, Oskar TJERNSTRÖM, Sean SKINNER
Life of this patent
Estimating the term…
Abstract
A gearbox assembly has a shaft having a first end and a second end opposite the first end, the first end comprising a recess; a bearing arranged in the recess, the bearing comprising an inner race; and a clamping shaft arranged at least partly in the recess and configured to limit axial movement of the inner race of the bearing in a direction towards the second end of the shaft. The clamping shaft has a shaft portion and a clamping portion. The clamping portion is adapted to bear against an inside of the inner race of the bearing, which inside faces said second end of the shaft.
Claims19
A gearbox assembly, comprising:
- a shaft having a first end and a second end opposite the first end, the first end comprising a recess;
- a bearing arranged in the recess, the bearing comprising an inner race;
- a clamping shaft arranged at least partly in the recess and configured to limit axial movement of the inner race of the bearing in a direction towards the second end of the shaft, the clamping shaft comprising a shaft portion and a clamping portion, wherein the clamping portion is adapted to bear against an inside of the inner race of the bearing, which inside faces said second end of the shaft;
- a gearbox housing part adapted to be mounted over the recess of the shaft, the gearbox housing part having a hole and an external contact surface surrounding said hole;
- and
- a fastening member adapted to threadingly engage the shaft portion of the clamping shaft, the fastening member having a contact surface adapted to abut the external contact surface of the gearbox housing part, wherein tightening of the fastening member when threadingly engaged to the shaft portion forces the clamping portion against said inside of the inner race of the bearing.
A method, comprising:
- providing a gearbox assembly, the gearbox assembly comprising:
- a shaft having a first end and a second end opposite the first end, the first end comprising a recess;
- a bearing arranged in the recess, the bearing comprising an inner race;
- and
- a clamping shaft arranged at least partly in the recess and configured to limit axial movement of the inner race of the bearing in a direction towards the second end of the shaft, the clamping shaft comprising a shaft portion and a clamping portion, wherein the clamping portion is adapted to bear against an inside of the inner race of the bearing, which inside faces said second end of the shaft;
- mounting a gearbox housing part over the recess of the shaft, the gearbox housing part having a hole and an external contact surface surrounding said hole;
- and
- threadingly engaging the shaft portion of the clamping shaft by a fastening member such that a contact surface of the fastening member abuts the external contact surface of the gearbox housing part, wherein tightening of the fastening member forces the clamping portion against said inside of the inner race of the bearing.
Dependencies are inferred from the claim text.