Large manipulator having an articulated mast that can be quickly folded and unfolded

US11098491B2 · kind B2 · utility

Assignee

• Schwing GmbH · DE

Inventors

• Johannes Henikl · Essen, DE
• Reiner Vierkotten · Oberhausen, DE
• Andreas Lehmann · Schlieren, CH

Key dates

• Filing date: Nov 30, 2017
• Grant date: Aug 24, 2021
• Expiry date: Jul 17, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F15B2211/895
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A large manipulator includes a chassis, a turntable arranged on the chassis and rotatable around a vertical axis via a rotary drive, and an articulated mast including two or more mast segments pivotably-movably connected, via articulated joints, with the respectively adjacent turntable or mast segment via a respective drive. The large manipulator further includes a mast sensor system configured to detect position of at least one point of the articulated mast or a pivot angle of at least one articulated joint and configured to generate sensor output signals. The large manipulator further includes a control device configured to actuate the drive in a normal operation for mast movement and to limit speed of movement of the articulated mast depending upon the sensor output signals. The drive is manually controllable in an emergency operation. The large manipulator further includes at least one limiting means, which, in the emergency operation, limit speed of the drive to a pre-specified maximum value.