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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-5640996-A, on 24 June 1997. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003251

Large manipulator, especially for self-propelled concrete pumps

Published
Permanent URL
Classification
Lifting, Positioning & Manipulation › Hoists and Cranes
Inventors
BENCKERT HARTMUT, SCHLECHT KARL
Assignee
PUTZMEISTER MASCHF
Original source
US-5640996-A, the United States Patent and Trademark Office, 24 June 1997
Document SHA-256
f6e736801925d2ca5c66568483162d1676d6946b9fdae1a5afbe230496eebeb4

The invention relates to a large manipulator, especially for truck mounted concrete pumps. A chassis bears a mast base rotatable about a vertical pivot and an articulated mast consisting of at least three arms. The arms can be pivoted to a limited extent about horizontal, mutually parallel axes in pairs in relation to the adjacent base or arm by means of a drive system. The articulated mast is actuated via a remote control device with control levers. In order to ensure a clear allocation of the movements of the control lever and the articulated mast, the invention proposes that the remote control device have a computer-supported co-ordinate transmitter controllable via the control lever for the drive systems via which, in one path of adjustment of the control lever, the drive systems for the pivots can be actuated independently of the drive system for the pivot of the mast base with the accomplishment of an extending or retracting movement of the articulated mast for a predetermined height of the tip of the mast. In the other path of adjustment of the control lever perpendicular to the first path, a rotary movement of the articulated mast about the pivot is triggered via the co-ordinate transmitter independently of the movement in the axes with a predetermined height of the tip of the articulated mast.

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Abstract

The invention relates to a large manipulator, especially for truck mounted concrete pumps. A chassis bears a mast base rotatable about a vertical pivot and an articulated mast consisting of at least three arms. The arms can be pivoted to a limited extent about horizontal, mutually parallel axes in pairs in relation to the adjacent base or arm by means of a drive system. The articulated mast is actuated via a remote control device with control levers. In order to ensure a clear allocation of the movements of the control lever and the articulated mast, the invention proposes that the remote control device have a computer-supported co-ordinate transmitter controllable via the control lever for the drive systems via which, in one path of adjustment of the control lever, the drive systems for the pivots can be actuated independently of the drive system for the pivot of the mast base with the accomplishment of an extending or retracting movement of the articulated mast for a predetermined height of the tip of the mast. In the other path of adjustment of the control lever perpendicular to the first path, a rotary movement of the articulated mast about the pivot is triggered via the co-ordinate transmitter independently of the movement in the axes with a predetermined height of the tip of the articulated mast.

1. Drawings

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[0002]Sheet 2.

Publication information

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Citation

OpenTechnical Publication OT-2026-000003251, “Large manipulator, especially for self-propelled concrete pumps,” published September 15, 2026 at 19:56:40 UTC, https://opentechnical.org/p/OT-2026-000003251.

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