Superimposed steering gear for tracklaying vehicles

US5041064A · kind A · utility

Assignee

• Zahnradfabrik Friedrichshafen AG · DE

Inventors

• Hans-Jurgen Eickhoff · Tettnang, DE
• Peter Tenberge · Friedrichshafen, DE

Key dates

• Filing date: Apr 6, 1990
• Grant date: Aug 20, 1991
• Expiry date: Apr 6, 2010

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H47/04
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In a superimposed steering gear (3) for tracklaying vehicles in which the steering power needed for turning is superimposed on the drive system via summarizing differentials and which has a hydrostatic-mechanical power branching summed up in a summarizing transmission (31), the power losses of the hydrostatic branch that works with poor efficiency are kept as small as possible and, at the same time, an infinite steering is made possible over all radial ranges. For this purpose, the summarizing transmission (31) is shiftable into steps that cover at least two radial ranges, a speed adaptation to the transmission components taking place at any given time in the shift points for an infinite transition.