Mannesmann Aktiengesellschaft

Terex Global Gmbh

Terex Demag Gmbh

Terex Cranes Germany Gmbh

Frank Conrad

Michael Martin

Roland Kuhn

Jens Fery

Walter Stowasser

Klaus Conrad

Jürgen Appel

Thilo Jene

Walter Zimmer

Achim Schütz

Oliver Fries

Markus Marx

Michael Irsh

Udo Biwer

Peter Orfey

Jürgen Schlachter

Heike Schwitzgebel

Joachim Plagemann

Ascan Klein

Device and process for braking rotating and/or slewing gears of work machines comprising at least one dynamic service brake for decelerating a rotating and/or pivotal movement of the rotating and/or slewing gear, and at least one static holding brake (), by means of which the rotating and/or slewing gear can be locked in one position, wherein at least one sensor () is assigned to the dynamic service brake () and/or to the static holding brake (), said sensor detecting the current movement of the rotating and/or slewing gear, and the sensor () being connected to a controller () that detects an actuation of the dynamic service brake () said controller actuating the static holding brake () when in case of continued rotating and/or pivoting movement of the rotating and/or slewing gear when a dynamic service brake () is still actuated.

Method and device for braking rotating and/or slewing gears

A drive of a sliding connecting member of a locking system of a telescopic system, having a telescopic cylinder () with an outer telescopic section () and an inner telescopic section (), which are each provided with a locking hole () into which a locking bolt () can be entered and withdrawn in a releasable manner via the sliding connecting member (), provided with a sliding path (), and a grasper (), wherein the locking bolt () is designed to be moveable by means of an engagement member () running in the sliding path () in such a way that the locking bolt () effects a linear movement and the jib sections () can be connected to one another by insertion of the locking bolt () into the bolting hole () and the sliding connecting member () can be driven by an electric linear drive ().

Drive for a sliding connecting member of a locking system of a telescopic system of a crane jib

A telescopic crane boom including a plurality of telescopically assembled tubular box sections including a base box section and an innermost box section having an open cross-section, and a boom head with a frame fixed to the outside circumference of the innermost box section. The head has a plurality of deflecting pulleys mounted on the frame, but no part extending inside the open cross section on the innermost base box section, whereby at least one additional box section can be inserted into the innermost box section in order to extend the boom.

Telescopic crane boom

A telescopic crane, includes a substructure, a superstructure rotatably mounted onto the substructure, a counterweight and a telescoping boom structure which includes a main boom slewable about a luffing plane. The main boom has a boom base and at least one telescope section received in the boom base and displaceable between retracted and extended positions. At least one guy support is mounted to the boom structure and connected to a guy rope which extends substantially longitudinally in the direction of the boom structure. The guy support is oriented with respect to the luffing plane at an inclination which is so selected that a lateral load acting on the boom structure is partially or entirely received by the guying.

Telescopic crane

A crane, includes a luffing jib having individual telescoping jib members, and a locking device configured for linkage of jib members and movable between an engagement position in which the jib members are locked together and a release position in which a first one of the jib members can be moved in and out relative to a second one of the jib members. The locking device is supported in the first jib member and received in a receptacle of the second jib member. A shifter, movable in an axial direction, is provided to shift the locking device via a coupling device between the engagement and release positions, with the coupling device extending perpendicular to the axis and connected to the shifter. The coupling device has a coupling member movable in a radial direction to effect an interlocking engagement with the locking device, which is movable in a same axis as the coupling member, wherein the locking device forms together with the coupling member a coupling between the shifter and the first jib member, and wherein in a transition phase between release and engagement positions, a projecting portion of the coupling member enters in interlocking engagement with the locking device.

Crane with a luffing jib

Growing community of inventors

Hornbach, Germany

Frank Conrad