Abstract:
The invention relates to an arrangement for damping oscillation of a loading member in a crane comprising a trolley (2), a hoisting mechanism located in the trolley, a hoisting rope (4) suspended from the hoisting mechanism, a loading member (5) fastened to the hoisting rope, the arrangement for damping oscillation of a loading member comprising a vertical guide projection (8) arranged in an upper part of the loading member, a guide tube (9) fastened to the trolley for receiving the guide projection, damping members arranged in the guide tube and com- prising elastic guide roll structures (10) engaging around the guide projection, each guide roll structure comprising a roll frame (11) and a guide roll (12) installed therein. Each roll frame is installed on an outer surface of the guide tube,a wall of the guide tube is at each guide roll provided with an opening (13) from which the guide roll penetrates into the guide tube, and elasticity is arranged between the roll frame and the guide tube.
Abstract:
The invention relates to an arrangement for damping oscillation of a loading member in a crane comprising a trolley (2), a hoisting mechanism, hoisting ropes (4), a loading member (5) fastened to the hoisting ropes, the arrange- ment comprising a vertical guide projection (10) arranged in an upper part of the loading member, and a guide part (11) arranged in the trolley and receiving the guide projection, damping members (14, 15) connected to the guide part being arranged in a separate support frame (12) which,in a hoisting direction of the loading member,is guidable into its place in a dock (13) arranged un- derneath the trolley and which is lowerable off the dock, onto the loading member, the guide part being a floating guide tube structure (11),and the damping members comprising a plurality of side damping modules (14) con- nected between a side wall of the guide tube structure and the support frame, around the guide tube structure,for substantially damping horizontal move- ment of the guide tube structure, and a support joint (15) which is arranged in an upper part of the support frame and from which the guide tube structure is suspended.
Abstract:
The present invention relates to a hoisting crane (20) comprising a substantially hollow vertical column (21), a jib (24) and topping means for pivoting the jib up and down, comprising a jib winch (30) and a jib hoisting cable (31). The crane further comprises hoisting means (35) for hoisting a load, comprising a hoisting winch (35) and an associated hoisting cable (36), the hoisting winch being disposed in the column (21), so that the hoisting cable (36) extends from the winch (35) through the hollow vertical column (21). The jib winch (30) and the hoisting winch (35) are arranged on a rotatable winch support (50), which is rotatable about a rotation axis substantially parallel with the vertical column (21), such that the winch support is mounted movable with respect to the vertical column (21). The hoisting crane further comprises a deep water winch (82) positioned below the movable winch support (50) and an associated deep water cable (81) for raising and lowering a load extending through the rotation axis of the movable winch support, so that the deep water cable (81) extends from the deep water winch (82) through the hollow vertical column (21). The present invention further relates to a vessel provided with such a crane.
Abstract:
The invention relates to a dampener pendulum (10) for dampening of movements arising from driving a load in a davit or similar lifting appliance, comprising an articulated connection (16) for transfer of pendulous movement between a holding part (12) and a pendulum part (14), where the holding part (12) is connected to said davit or the like and where the pendulum part (14) is connected to the load. The invention is characterised in that a first dampener block (18) is placed in said articulated connection (16), arranged to dampen said pendulous movement of the pendulum part (14), and that a second dampener block (20) is arranged to the holding part (12) set up to make possible, and to dampen, rotational movement of the holding part (12) and the pendulum part (14).
Abstract:
A system for transferring a steel slab from a first roller table to a second roller table by lifting the top slab from a stack of slabs on the first table, and then transferring and lowering the slab onto the second table. Specifically, a gantry-type bridge trolley mechanism having suspended electromagnets is provided that is motor driven on a cantilevered runway over the slap unpiler table and the furnace table. A stabilizer system minimizes sway of the electromagnets and the slabs.
Abstract:
The invention relates to an arrangement for placing crane mechanisms, the crane comprising lifting mechanisms (1) with lifting drums (2), lifting ropes (3) in the lifting drums, a lifting trolley (4), a loading element (5) suspended from the lifting trolley (4) by the lifting ropes (3), four auxiliary mechanisms (10) controlling the swaying and twisting of the loading element (5) and the load (9) fastened to it, auxiliary ropes (12) in the rope drums (11) of the auxiliary mechanisms (10), and turning sheaves (13) of the auxiliary ropes (12) in the loading element (5). The lifting mechanisms (1) and lifting drums (2) are fixed to the frame of the crane, the auxiliary mechanisms (10) with their rope drums (11) are located in the lifting trolley (4), and the auxiliary ropes (12) are led from the turning sheaves (13) to a storage drum (14) for the auxiliary ropes in the lifting trolley (4), the storage drum being equipped with an additional mechanism (15) that is independent of the lifting mechanisms (1).
Abstract:
The invention relates to a crane, especially a crane that is configured as a full gantry crane (1) for general cargo and especially for containers. The inventive crane comprises a travelling crab, lifting mechanisms (5) having two drums and four ropes (7) and a fixing means, especially a spreader (9), that is supported therefrom and has load receiving means and deflection rollers (10) for the ropes (7). Two rope drums (5) respectively are arranged on an axis and the ropes (7) are arranged between a locating point (8) for the rope and the rope drum (5). Each rope (7) interacts with only one locating point of the load receiving means. The rope drums (5) which are arranged adjacent to one another wind or unwind the ropes (7) in a double-sided manner and also adjacently to each other. Each rope drum (5) is provided with only one winding direction and the two rope drums (5) extend in opposite directions.
Abstract:
A cradle suspending device which is able to accurately adjust the position of a cradle, prevents the wobbling of a load while it is carried, and effects automatic loading in a smooth manner to thereby reduce labour. To make this happen, a strut device for freely imparting and/or releasing a strutting force is provided between a crane suspended device (3) suspended from a crane (1) for vertical movement and a cradle clamping device (4) for suspending a cradle (10) in a detachable fashion. In addition, a photoelectric sensor (23) is provided on the clamping device (4) for detecting a cradle (10) stacked higher than a predetermined level.
Abstract:
A device for preventing swinging of a hung load, according to the invention comprises movable frames (15) provided on right and left sides, respectively, of a traversing trolley (1) and movable relative to the traversing trolley (1) in a direction of movement of the traversing trolley (1), two sets of guide sheaves (13, 14) for winding up lengths of rope and fixedly provided in the movable frames (15) and spaced apart from each other, and moving means (17) for independently moving the respective movable frames (15) on the traversing trolley (1). The movable frames (15) (guide sheaves) are actuated by the moving means (17) provided on the both sides of the traversing trolley (1) to dampen transverse swinging of a load of the traversing trolley (1), swinging of respective skews or a combined swinging thereof. Accordingly, simplification of the device, readiness of control and an increased freedom with respect to arrangement of the device are attained.
Abstract:
Die Erfindung betrifft eine Hubvorrichtung (1), umfassend einen entlang einer Bahn (2) verfahrbaren Tragwagen (3), ein Hubelement (4) zur Aufnahme einer Last, eine Hebeeinrichtung (5), mit der das Hubelement (4) relativ zum Tragwagen (3) in vertikale Richtung (V) angehoben und abgesenkt werden kann, wobei die Hebeeinrichtung (5) mindestens zwei Zugelemente (6, 7, 8, 9) umfasst, wobei jedes Zugelement am Tragwagen (3) über eine Aufwickelvorrichtung (10, 1 1, 12, 13) aufwickelbar ist. Um eine leichte und universell nutzbare Hubvorrichtung dieser Art zu schaffen, die kompakte Abmessungen aufweist und eine stabile Führung des Hubelements relativ zum Tragwagen erlaubt, sieht die Erfindung vor, dass ein erster Antrieb (18) für den Antrieb einer ersten Aufwickelvorrichtung (10, 11) und ein zweiter Antrieb (19) für den Antrieb einer zweiten Aufwickelvorrichtung (12, 13) vorhanden sind, wobei der erste Antrieb (18) einen Antriebsmotor (21) umfasst, der über ein Kegelradgetriebe (22) mindestens eine Welle (23, 24) antreibt, die über ein Getriebeelement (25, 26) eine Walze (14, 15) der ersten Aufwickelvorrichtung (10, 1 1) antreibt, und wobei der zweite Antrieb (19) einen Antriebsmotor (27) umfasst, der über ein Stirnrad-, Flach- oder Planetengetriebe (28) eine Walze (16, 17) der zweiten Aufwickelvorrichtung (12, 13) antreibt.