Locking unit for a telescopic jib of a crane and telescopic jib

US6575318B2 · kind B2 · utility

Assignee

• Atecs Mannesmann AG · DE

Inventors

• Walter Stowasser · Zweibrücken, DE
• Klaus Meissner · Herrenberg, DE
• Hans-Walter Brenner · Stuttgart, DE
• Klaus Conrad · Hornbach, DE
• Thomas Krebs · Doorwerth, NL
• Michael Irsch · Lebach, DE
• Jens Fery · Ensdorf, DE

Key dates

• Filing date: Dec 17, 2001
• Grant date: Jun 10, 2003
• Expiry date: Dec 17, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66C23/705
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A locking unit for a telescopic system of a hydraulically actuated telescopic jib of a crane, having a jib box frame and a plurality of telescopic sections which are guided inside one another and can be moved out of a starting position into in each case at least one extended position is provided with a drive for moving at least one driver bolt of a locking unit into and out of a section receptive driver bolt opening, and for moving a coupling device for displacement of at least one locking bolt into and out of a locking bolt receptive opening, the drive being arranged fixedly on the box frame of the jib, there being a mechanical drive connection between the drive and the locking unit.