Powershift reversing gearbox

US6752034B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Tilo Huber · Passau, DE
• Fritz Leber · Friedrichshafen, DE
• Udo Brehmer · Tettnang, DE

Key dates

• Filing date: Jun 27, 2002
• Grant date: Jun 22, 2004
• Expiry date: Jul 6, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19405
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a powershift multi-gear transmission (1), the countershafts of the reverse gear (KR), of the forward gear (KV) and of the fourth gear (K4) are combined to form one reversing transmission unit (33) and the countershaft units of the first gear (K1), of the second gear (K2) and of the third gear (K3) are combined to form one gear transmission unit (34). The reversing transmission unit (33) is provided on any side of the input shaft (3). The gear transmission unit (34) attaches to the reversing transmission unit (33) so that the reversing transmission unit (33) and the gear transmission unit (34) are disposed in relation to the input shaft (3) in succession upon one side of the input shaft (3). The gear transmission unit (34) is preferably located on the countershaft unit of the reverse gear (KR).