Abstract:
A multi configurations crane system comprises a crane base having a main boom pivot structure adapted to secure thereto a main boom of the crane and providing a horizontal main boom pivot axis for the main boom relative to the crane base. A main boom system is adapted to provide multiple main boom configurations and comprises: - a lower main boom section having a first end connectable to said main boom pivot structure of the crane base to allow for luffing of the main boom in a luffing plane, and a second end opposite said first end, - a top main boom section adapted to suspend a load from the main boom, e.g. comprising an assembly of one or more sheaves for one or more winch driven cables from which said load is suspended, - multiple lattice insert sections adapted to be inserted as a single strand of multiple of said lattice insert sections in said main boom.
Abstract:
An adjustable length tensioning member that comprises a rope, a first connector on the rope, a second connector on the rope, and a plurality of connection points between the first connector and the second connector is disclosed. The plurality of connection points have a diameter greater than a diameter of the rope. The rope may be passed through a socket coupled to a first crane component and one of the connectors on the rope is coupled to a second crane component. One of the plurality of connection points engages a seat on the socket to tension the rope between the socket and the connection point.
Abstract:
The invention concerns a telescopic extension arm (16), in particular for lifting platforms, said arm comprising at least two cylindrical tubular telescope sections (161 to 165) which are guided into one another and can be moved relative to one other by means of an extension device (18, 19), at least one of the telescope sections (161 to 165) consisting of fibre composite. In order to produce telescope sections of this type a method can be used in which a wound core (42) having a fibrous material casing wound offset with binder is inserted into a hollow pressing mould which is closed under pressure. The binder is hardened, the hollow pressing mould is opened, the wound core (42) with the fibrous material casing is removed and the core (42) is in turn removed from the hardened fibrous material casing which forms the telescope section.
Abstract:
A method for assembling a comprises erecting an upright ballast mast with a back mast top slide that is movable along the ballast mast and constructing a back mast using the upright ballast mast. This comprises the steps of providing a back mast upper section, multiple back mast intermediate sections, and a back mast lower section. The method also comprises connecting a part of the back mast including at least the back mast upper section, and possibly further including one or more pre-connected intermediate sections, to the back mast top slide. The part of the back mast that has been connected to the back mast top slide is stepwise extended by attaching further back mast intermediate sections and the back mast lower section. During the extension of the back mast the back mast top slide is stepwise raised along the upright ballast mast.
Abstract:
Die vorliegende Erfindung betrifft einen Kran mit einem mehrstückigen Längsstrukturteil, insbesondere Turm oder Ausleger, dessen Stücke aneinandersetzbare Eckstiele oder Längsgurte umfassen, die durch eine Zapfenverbindung lösbar miteinander verbindbar sind, wobei die Zapfenverbindung einen in eine Zapfenaufnahme einsteckbaren Zapfen umfasst, der mittels zumindest eines quer zur Einsteckrichtung des Zapfens einsetzbaren Querriegel festlegbar ist. Erfindungsgemäß ist der Querriegel der Zapfenverbindung durch eine Spreizeinrichtung aufspreizbar derart, dass durch Aufspreizen des Querriegels die zu verbindenden Stücke des Längsstrukturteils zueinander verklemmbar sind.
Abstract:
Ein mehrteiliges Gittermaststück umfasst eine Längsachse (14), mehrere sich entlang der Längsachse (14) erstreckende Gurtelemente (15), mehrere jeweils zwei benachbarte Gurtelemente (15) miteinander verbindende Verbindungsstäbe (16, 20, 30), eine senkrecht zur Längsachse (14) orientierte Gittermast-Querschnittsfläche mit einer Gittermastbreite ( B G ) und mit einer Gittermasthöhe (H G ) sowie mindestens zwei lösbar miteinander verbindbaren Gittermastbaugruppen (18, 19; 24, 25, 26, 27; 15, 16, 30, 36, 37; 15, 16, 30, 42; 15, 16, 30, 46; 15, 16, 30, 48). Die Gittermastbaugruppen (18, 19; 24, 25, 26, 27; 15, 16, 30, 36, 37; 15, 16, 30, 42; 15, 16, 30, 46; 15, 16, 30, 48) weisen jeweils eine Gittermastbaugruppenbreite ( B GB ) auf, die kleiner ist als die Gittermastbreite ( B G ) und/oder weisen eine Gittermastbaugruppenhöhe ( H GB ) auf, die kleiner ist als die Gittermasthöhe (H G ). Die Verbindungsstäbe (16, 20, 30) sind in einer Arbeitsanordnung fest mit einem Gurtelement (15) verbunden.