Dual chain hoist arrangement

US8226137B2 · kind B2 · utility

Assignee

• Konecranes PLC · FI

Inventors

• Jürgen Kasper · Stuttgart, DE
• Peter Kittsteiner · Waldenburg, DE

Key dates

• Filing date: Jan 20, 2010
• Grant date: Jul 24, 2012
• Expiry date: Mar 20, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66C17/04
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A dual chain hoist having a lifting beam that can be telescopically extended and contracted, wherein load chains respectively extend to hook blocks suspended beneath the lifting beam in the vicinity of the ends of two telescoping sections that form the lifting beam. The distance between the telescoping sections can be varied with another chain. The chain for varying the length of the lifting beam extends over a chain wheel that is connected without rotational play to another chain wheel from which the load chain of the hook block of the respective telescoping lifting beam section.