Hydrodynamic brakes

US4411340A · kind A · utility

Assignee

• Voith Getriebe KG · DE

Inventors

• Klaus Brosius · Heidenheim an der Brenz, DE
• Berthold Herrmann · Heidenheim, DE

Key dates

• Filing date: Oct 21, 1982
• Grant date: Oct 25, 1983
• Expiry date: Oct 21, 2002

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D57/04
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydrodynamic brake is disclosed of a kind comprising a rotor bucket wheel and a stator bucket wheel in a housing and defining a torus-shaped working chamber and defining between them a bucket wheel gap. An outlet duct surrounds the perimeter of the rotor bucket wheel. A plurality of baffle type flow obstructions are provided about the periphery of the bucket wheel gap, and are movable into the bucket wheel gap and when the brake is not engaged. A small gap between the radially outermost part of the rotor bucket wheel and the housing is continuous with the outlet duct. A second duct connects the outlet duct and the space in which the baffle type flow obstructions are accommodated, thereby preventing unwanted movement of the flow obstructions into the bucket wheel gap while the brake is engaged.