Schwing Gmbh

Ttcontrol Gmbh

Joseph Schnittker

Reiner Vierkotten

Andreas Kugi

Johannes Henikl

Andreas Lehmann

Wolfgang Kemmetmüller

Marcus Karl Pfeiffer

Stephan Grün

Marcus Simon Specks

Wolfgang Tebeek

A large manipulator includes a chassis, at least two front support arms, and at least two rear support arms. The support arms are coupled to corresponding extendable support legs that are each coupled to the chassis and that are each configured to be extended between a travel position and a support position. The large manipulator further includes a mast arm with a turntable coupled to the chassis. An operating range of the mast arm is dependent upon the support positions of the extendable support arms. The large manipulator further includes a computer with a monitor and a program-controlled positioning aid. The positioning aid is configured to generate a graphical representation of surrounding image data on the monitor. The operating range of the mast arm is visualized in the graphical representation.

Mobile large manipulator

An electrohydraulic control circuit for driving a hydraulically actuated actuating element (), by means of which a segment () of a manipulator, in particular of a large manipulator for truck-mounted concrete pumps, can be adjusted in terms of its orientation, wherein there are provided an electrically driven first valve (), which is connected to hydraulic working lines of the actuating element () for the drive thereof, and leak-free check valves () provided in the working lines of the actuating element (), which valves are arranged on the actuating element () or on the segment () associated with this actuating element () and can be released for the normal operation of the actuating element (), wherein the release of the check valves () is driven by an electronic control unit (ECU) separate from the first valve () and the check valves ().

Electrohydraulic control circuit

Growing community of inventors

Dortmund, Germany

Joseph Schnittker