Hoisting mechanism for steel processing ladles in RH degassers

US7662337B2 · kind B2 · utility

Assignee

• SIEMENS VAI METALS TECHNOLOGIES GMBH · AT

Inventors

• Joachim Ehle · Oberkirch, DE
• Markus Huellen · Mülheim an der Ruhr, DE
• Michael Kurlbaum · Gelsenkirchen, DE
• Reinhard Pannenbäcker · Dorsten, DE
• Arno Luven · Krefeld, DE
• Joohen Sowinski · Wesel, DE

Key dates

• Filing date: Jun 1, 2007
• Grant date: Feb 16, 2010
• Expiry date: May 5, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21C5/4633
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A hoisting mechanism for raising a ladle filled with liquid steel from a transfer vehicle to immersion pipes of a vacuum treatment tank of an RH degasser. Two lifting arms are provided, one end of which can be brought into engagement with a support device formed on the ladle, and a bearing end of the arms is supported in a stationary saddle support comprised in such a way of a runway, disposed on the bearing ends of the lifting arms and having the shape of a circular arc, and of a path of rolling contact, adapted to axially fixedly guide the runway during pivoting of the lifting arms, that due to shifting of the point of load introduction in the saddle support occurring during a raising movement, reduction of a horizontal movement of the ladle occurs.