Abstract:
Die Erfindung betrifft eine Hubzylinder (17) mit einer Umlenkrollenvorrichtung (21 ) für ein Flurförderzeug (1), wobei die Umlenkrollenvorrichtung (21) eine Hubkettenumlenkrolle (36) mit einer Rollenachse (44) und einem auf der Rollenachse drehbaren Rollenkörper (50), einen Rollenträger (38) und wenigstens eine seitlich neben der Hubkettenumlenkrolle (36) angeordnete Zusatzumlenkrolle (35) aufweist, wobei die Rollenachse (44) einen in dem Rollenkörper (50) aufgenommenen zylindrischen Lagerabschnitt (48) und axial beidseitig davon nach außen abstehende Befestigungsenden (46) hat, die an dem Rollenträger (38) befestigt sind, wobei die Zusatzumlenkrolle (35) an einem Zusatzumlenkrollenträger (54) angeordnet ist, derart, dass ihre physikalische Drehachse (60) gegenüber der physikalischen Drehachse (62) der Hubkettenumlenkrolle (36) versetzt ist und die Zusatzumlenkrolle (35) in radialer Richtung mit einem der Befestigungsenden (46) der Rollenachse (44) der Hubkettenumlenkrolle (36) zumindest abschnittsweise überlappt.
Abstract:
A materials handling vehicle (100) is provided comprising: a support structure including a fixed member (200); a movable assembly coupled to the support structure (300); a hydraulic system (401); and a control system (1500). The support structure further comprises lift apparatus (400) to effect movement of the movable assembly relative to the support structure fixed member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor (301), a pump (302) coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve (420) associated with the at least one ram/cylinder assembly. The control structure may estimate a speed of the movable assembly from a speed of the motor and control the operation of the at least one valve using the estimated movable assembly speed.
Abstract:
Die Erfindung betrifft ein Verfahren zum Lastumschlag in einem Lager (4) für Container (2), insbesondere Norm-Container, in dem die Container (2) von einem Containerstapelkran (13) automatisch ein- und ausgelagert werden, die Container (2) von dem Containerstapelkran (13) in einem an das Lager (4) angrenzenden Be- und Entladebereich (8) auf einen auf einem Stellplatz (12) des Be- und Entladebereichs (8) abgestellten Lastkraftwagen (7) abgeladen oder von einen auf einem Stellplatz (12) des Be- und Entladebereichs (8) abgestellten Lastkraftwagen (7) aufgenommen werden. Um ein Verfahren zum Lastumschlag in einem Lager für Container in Bezug auf seine Durchsatzleistung und Sicherheit zu optimieren, wird vorgeschlagen, dass nach Einfahren des Lastkraftwagens (7) auf den Stellplatz (12) und nach Verlassen des Stellplatzes (12) durch den Fahrer des Lastkraftwagens (7) der Stellplatz (12) gegen die Anwesenheit von mindestens einer Person, insbesondere den Fahrer des Lastkraftwagens (7), gesichert wird und ein Freigabesignal an den Containerstapelkran (13) für den automatischen Be- oder Entladevorgang gegeben wird.
Abstract:
The invention relates to an industrial truck (1) comprising a first mast (6) comprising two uprights (7.1;7.2) and a first and a second load carriage (9;14) arranged to be independently moved in the vertical direction wherein a second mast (12) is arranged between the uprights (7.1;7.2) of the first mast and that the first load carriage (9) is arranged to be moved along the first mast (6) and the second load carriage (14) is arranged to be moved along the second mast (12).
Abstract:
A materials handling vehicle (10) is provided comprising a power unit (12), a mast assembly (100) and a fluid supply system (300). The mast assembly is coupled to the power unit. The mast assembly comprises a weldment, a movable element and a ram/cylinder assembly coupled to the movable element to effect movement of the element. The fluid supply system (300) includes manifold apparatus (500) and at least one fluid line coupled to the manifold apparatus and the ram/cylinder assembly. The manifold apparatus provides pressurized hydraulic fluid to the ram/cylinder assembly via the fluid line to raise the movable element. The manifold apparatus is mounted to the mast assembly.
Abstract:
The invention relates to the mast-hydraulic cylinder construction (4, 5) of a two or multiple-stage forklift mast. The substantially vertical beams (4, 5) and cylinder liners (6) of the solid mast structure form an integrated structure (4, 5), in which the cylinder liners (6) consist of ducts integrated within the beams (4, 5), with the mass centre of the cross-section of the integrated structures being at the centre of the cylinder liner (6) or in its immediate vicinity so that the integrated structure (4, 5) can be manufactured by heat extrusion or cold drawing, and in that the integrated structure (4, 5) comprises a first protrusion (14), whose surface substantially transverse to the direction of movement of the forklift and facing the cylinder liner is a bearing surface (17) for a roller bearing (16), and a second protrusion (15) for providing a mass centre at the centre of the cylinder liner (6) or in its immediate vicinity, and a support surface (18, 19) substantially transverse to the direction of movement of the forklift and disposed on the second protrusion (15) or on the outer surface of the cylinder liner facing the first protrusion (14). The invention also relates to a method for producing an integrated structure (4, 5).
Abstract:
Parallel lifting chains (5, 6, 7) of a fork lift truck (1) mast assembly (2) are connected to an anchor assembly (10) that allows relative longitudinal movement so that the chains (5, 6, 7) are all under similar tension when the carriage (3) is raised or lowered. The chains (5, 6, 7) are able to move in a longitudinal direction automatically without manual adjustment and whilst under load.
Abstract:
A chain such as that used in a fork lift truck carriage lifting mechanism has a plurality of interleaved link assemblies each having a pair of outer link plates and a plurality of intermediate link plates. The outer link plate has a strength less than that of any intermediate link plate when measured in an unassembled state. The reduced strength may be achieved by a reduction in thickness or head area of the link plate. The outer link plates may have a stiffness of 60 % to 90 % of the average stiffness across the chain and a first group of intermediate link plates of certain chain configurations have a stiffness of 70 % to 90 % of the average stiffness of the chain. The invention provides for a chain in which the load is more evenly shared between link plates and allows a single composite chain to be replaced by two smaller chains without loss of load capacity.