Articulated mast for movable concrete pumps

US7204269B2 · kind B2 · utility

Assignee

• PUTZMEISTER INC. · DE

Inventors

• Dieter Alwes · Neckartenzlingen, DE
• Markus Wolfram · Ratingen, DE

Key dates

• Filing date: Jun 4, 2004
• Grant date: Apr 17, 2007
• Expiry date: Dec 15, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/8807
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A mobile concrete pump comprising at least five mast arms (1 to 7) which are pivotable relative to each other about horizontal rotation axes (B to G). The first respective mast arm is hinged to a mast block (22) so as to be pivotable about a horizontal rotation axis (A), said mast block being rotatable about a vertical axis (20), while one end of the last mast arm has no joint. In order to be able to add other mast arms in a modular manner, a first Z-type folding group comprising the last three mast arms, a first coil-type folding group comprising the penultimate, third to last and fourth to last mast arm, and a second Z-type folding group comprising the third to last, fourth to last, and fifth to last mast arm are provided in a preferred embodiment. The basic configuration can be complemented with additional mast arms by having a sixth to last mast arm form a Z-type folding group consisting of four mast arms along with the third to last, fourth to last, and fifth to last mast arm while a seventh to last mast arm forms a second coil-type folding group together with the fifth to last and sixth to last mast arm.