Shaft/hub connection

US6918723B2 · kind B2 · utility

Assignee

• ABB Turbo Systems AG · CH

Inventors

• Josef Battig · Egliswil, CH
• Alfred Muller · Krefeld, DE
• Balz Flury · Würenlos, CH

Key dates

• Filing date: Jun 7, 2004
• Grant date: Jul 19, 2005
• Expiry date: Jun 7, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2250/281
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The shaft is connected to the shaft attachment by a thread. A bore with an internal thread is incorporated in the shaft attachment and the shaft has a corresponding stem which can be introduced into the threaded bore and has an external thread. An axial stop is arranged on the shaft and on the shaft attachment. The internal and external threads have torque-transmitting flanks which are flat toward the axis and which can be connected to one another frictionally by radial pressure by mutual rotation of shaft and shaft attachment with interaction between the axial stops. Owing to the small angle between the load-bearing flanks and the axis, the radial pressure decisive for the torque transmission is correspondingly greater than in conventional threaded connections. As a result, the axial prestressing force between the two parts to be connected can be correspondingly reduced.