EP0079328A1 - Grue de bateau avant-arriere de grande puissance - Google Patents

Grue de bateau avant-arriere de grande puissance

Info

Publication number
EP0079328A1
EP0079328A1 EP19800900558 EP80900558A EP0079328A1 EP 0079328 A1 EP0079328 A1 EP 0079328A1 EP 19800900558 EP19800900558 EP 19800900558 EP 80900558 A EP80900558 A EP 80900558A EP 0079328 A1 EP0079328 A1 EP 0079328A1
Authority
EP
European Patent Office
Prior art keywords
cross
jib
primary
base
mast
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19800900558
Other languages
German (de)
English (en)
Inventor
Robert Morrison
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPEEDCRANES Ltd
Original Assignee
SPEEDCRANES Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SPEEDCRANES Ltd filed Critical SPEEDCRANES Ltd
Publication of EP0079328A1 publication Critical patent/EP0079328A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/60—Derricks
    • B66C23/605—Derricks employing ships' masts

Definitions

  • the invention relates to a ship's crane which is capable of servicing fore-and-aft holds, between which it is situated, having a single mast or derrick, a single jib, and rigging which enables the jib to be moved rapidly and easily between opposite sides of the mast, for servicing the different holds.
  • One known form of ship's crane suitable for this purpose, comprises a base; universal pivot means mounted on the base; a mast upstanding from the base and having an upper end; a cross-member supported by and extending laterally of the mast and having first and second parts which lie on opposite sides of a reference point on the cross-member directly above the universal pivot means, with the first part lying on the opposite side of the reference point to the mast; a primary jib having an upper end and lower end supported by the universal pivot means for universal pivotal movement of the primary jib relative to the base; hoisting pulley means at the upper end of the primary jib; a hoisting line which extends from the upper end of the mast or the cross-member to the upper end of the primary jib and is trained over the hoisting pulley means; control pulley means supported by the upper end of the primary jib; a first jib control line extending from the first part of the cross-member to the control pulley means,
  • the first and second parts of the cross-member are equally spaced on opposite sides of the reference point on the cross member disposed directly above the universal pivot means and the second jib control line is also trained around control pulley means at the upper end of the primary jib so as to extend downwardly to releasable anchorage means, on the base, which are disposed on the same side of the universal pivot means as the second part of the crossmember so as to provide the primary jib with the same lateral support when it is equally inclined on opposite sides of the longitudinal axis of the ship.
  • the Stulken crane produced by Blom and Voss in Germany was designed to overcome these deficiencies.
  • the jib is pivotally mounted between two laterally spaced masts and jib control line s extend from the upper end of the jib to the upper ends of the two masts.
  • jib control line s extend from the upper end of the jib to the upper ends of the two masts.
  • lighter duty jibs are mounted on oradjacent both sides of both masts and both jibs on each side of the masts are provided with separate hoisting lines which are connected at their load engaging ends to provide a "union purchase" crane because the rigging for this type of crane can be easily dismounted so as to avoid foulding the rigging of the heavy duty jib when this is required once more.
  • the known heavy-duty fore-and-aft working ship's crane having a single mast, is modified so as to ensure that the lateral distance between the second part of the cross-member and the reference point on the cross-member, directly above the universal pivot means, is greater than the lateral distance between this reference point on the cross-member and by arranging the rigging so that the second jib control line has no extension from the upper end of the primary jib to the base.
  • a heavy-duty fore-and-aft working ship's crane comprising a base; universal pivot means mounted on the base; a cross-member supported by and extending laterally of the mast; a primary jib pivotally supported on one side of the mast by universal pivot means on the base for universal pivotal movement relative to the base ; a first jib control line extending from a first part of said cross-member, on the same side of the mast as the universal pivot means, to control pulley means at the upper end of the jib, around the control pulley means and down to anchorage means, on the base, disposed on.
  • the first and second jib control lines are capable of supporting the primary jib on both sides of the cross-member.
  • the lateral support for the primary jib provided by the first jib control line results from the fact that the first jib control line extends from the control pulley means at the upper end of the primary jib to the first part of the cross-member and to anchorage means, on the base, disposed on the same side of the universal pivot means as the first part of the cross- member.
  • the second jib control line has no extension from the upper end of the primary jib to the base, the second jib control line provides adequate lateral support for the primary jib because it extends from the second part of the cross-member which is laterally spaced from the reference point on the cross-member by a greater distance from the first part of the cross-member, on the opposite side of the reference point.
  • the primary jib when it is desired to swing the primary jib from a position on one side of the cross-member to a position on the other side of the cross-member, to change between the working of fore and aft holds, the primary jib can simply be swung around the same side of the mast as the anchorage means.
  • the second control line As there is no extension of the second control line from the upper end of the primary jib to the base, on the opposite side of the mast to the anchorage means, it is not necessary to release the second control line from the base and to carry it around the mast, in the same direction of movement as the jib, and then to re-fasten it to the base, as in prior art constructions. This facilitates and expedites change-over, saving much time and effort.
  • the first jib control line extending between the first part of the cross-member and the upper end of the primary jib must be below the second jib control line extending between the second part of the cross-member and the upper end of the primary jib. This ensures that the first jib control line cannot foul the second jib control line.
  • the second part of the cross-member may therefore be disposed above the first part of the cross-member.
  • the primary jib can be rapidly and easily stowed by nesting it against the end of the cross-member on the same side of the universal pivot means as the anchorage means, as in prior art constructions.
  • two lighter duty, secondary jibs can be pivotally mounted on or above the base, on opposite sides of the cross-member; hoisting means, including two further hoisting lines, may be provided, respectively, for co-operation with these secondary jibs; and these secondary jibs can be controlled by two sets of further control lines extending from the two secondary jibs to the upper end of the mast or to the cross-member for working holds on opposite sides of the cross-member without interfering with the stowed primary jib or with the first and second jib control lines of the stowed primary jib. It is therefore possible to effect rapid and easy change-over between heavy duty and light duty working and to carry out light duty
  • the distances between the reference point on the cross-member, directly above the universal pivot means, and the first and second parts of the cross-member on opposite sides of this reference point depend on the dimensions of the base, mast and jib and also on the loading to be carried by the crane.
  • the distance between the first and second parts of the cross-member should be approximately 8 metres, the reference point on the cross-member, directly above the universal pivot means, dividing this distance in the ratio 1 : 3 so that the first and second parts of the cross-member are spaced, respectively, 2 metres and 6 metres from the reference point on the cross-member.
  • the cross-member must be positioned on the mast so that the cross-member is attached to the mast at or adjacent the second part of the cross-member so as to allow the primary jib to swing underneath the first part of the cross-member.
  • This means that the mast can be spaced sufficiently far away from the universal pivot means to allow the primary jib to swing towards the mast through relatively large angles, typically of the order of 65 degrees from the fore-and-aft axis.
  • the first and second jib control lines between the cross-member and the primary jib are aligned with each other, along the cross-member, and so are imcapable of exercising any control on slewing movement of the primary jib.
  • the anchorage means may therefore be movable between positions on opposite sides of the cross-member at which the first and second jib control lines can exercise effective control of slewing movement of the primary jib. This further facilitates movement of the primary jib from one side of the cross-member to the other.
  • a radius arm is pivotally mounted on the base at a pivotal point disposed laterally of the mast and mid-way between the two desired positions of the anchorage means on opposite sides of the cross-member; the anchorage means are mounted on the radius arm, spaced from the pivotal point; and releasable locking means are provided for securing the radius arm to the base so that the anchorage means are held, alternatively, in either of the two desired positions on opposite sides of the cross-member.
  • a carrier member may be pivotally mounted at the upper end of the primary jib, and may be arranged so as to support the hoisting pulley means, the control pulley means and connector means for supporting the second jib control line extending between the second part of the cross-member and the upper end of the primary jib.
  • the first control line is rigged to provide a plural-part purchase extending between the first part of the cross-member and the upper end of the primary jib and a part of the control pulley means is supported at the upper end of the primary jib for co-operation with this plural-part purchase
  • the reduction in bending stresses imposed on the upper end of the primary jib by the use of the pivotally mounted carrier member may be enhanced by supporting this part of the control pulley means on the carrier member.
  • Figure 1 is an elevational view of a heavy-duty fore-and-aft working ship's crane, according to the invention, during adjustment;
  • Figures 2, 3 and 4 are schematic plan views of the crane shown in Figure 1, showing the crane adjusted for heavy-duty working of fore and aft holds;
  • Figure 5 is a schematic elevational view of the crane shown in Figures 1 to 4, adjusted for light-duty working.
  • Figure 6 is a schematic plan view of the crane, adjusted for light-duty working of fore and aft holds, as shown in Figure 5.
  • universal pivot means 2 for a heavy-duty, primary jib 9, are mounted on a base 1 provided by the deck of a ship.
  • a mast 3 projects from the base.l, and, at its upper end 4, supports a cross-member 5 so that a reference point 8 on the cross-member 5 lies directly above the universal pivot means 2.
  • a carrier member 31 is pivotally supported on a swivel pin 33 at the upper end 10 of the primary jib 9 and the lower end 11 of the primary jib 9 is pivotally supported by the universal pivot means 2.
  • a first jib control line 17 extends from a first topping and slewing winch 34, mounted on the base 1, over a guide pulley 35 at the upper end 4 of the mast 3, over upper and lower guide pulleys 36 and 37 supported at a first part 6 of the cross-member 5 to a pulley block 15 supported by the carrier member 31.
  • Three reaches of the line 16 extend between the pulley block 15 and a further pulley block 38 supported at the first part 6 of the cross-member 5 and pass around control pulley 16 supported on one side of the upper end 10 of the primary jib 9 and down to a pulley 39 supported on anchorage means 18 supported on a radius arm 28 for attachment to the base 1.
  • the line 17 then passes around the pulley 39 up to a pulley 40 supported at the upper end 10 of the primary jib 9, around pulley 40 and back to an attachment point on anchorage means 18.
  • a second jib control line 19 extends from a second topping and slewing winch 41, over a pulley block 42 supported at a second part 7 of the cross-member 5, over a pulley on the pulley block 42 to a pulley block 43 supported on the carrier member 31.
  • This line 19 passes around a pulley on the pulley block 43, back to a pulley block 44 supported at the second part 7 of the cross-member 5, around a pulley on pulley block 44 and back to a point of attachment on the pulley block 43.
  • Topping of the primary jib 9 is effected by operating first and second topping and slewing winches 34 and 41 together, winding-in together to raise the primary jib 9 or winding-out together to lower the primary jib 9 .
  • slewing of the primary jib 9 is effected by winding in one of the topping and slewing winches 34 and 41 and simultaneously winding out the other.
  • Hoisting of a load hook 44 is effected by a hoisting winch 45 and a hoisting line 14.
  • the hoisting line 14 extends from the hoisting winch 45 around a pulley in pulley block 42 around hoisting pulleys 12 and 13 supported on the carrier member 31, down to a pulley block 46 supporting the cargo hook 44. Three reaches of the hoisting line 14 extend between the pulley block 46 and a further pulley block 47 supported by the carrier member 31, with the end of the hoisting line 14 attached to the pulley block 47.
  • the primary jib 9 extends laterally of the mast 3 between two working positions, fore and aft of the mast 3.
  • the pulley block 42 mounted on the second part 7 of the cross-member 5 is supported at a higher level than the upper guide pulley 37 mounted on the first part 6 of the cross-member 5 and the guide pulley 12 for the hoisting line 14 is supported by the carrier member 31 so that the hoisting line 14 extending between the pulley block 42 and the pulley 12 lies above the reaches of the first and second jib control lines 17 and 19 extending between the cross-member 5 and the upper end 10 of the primary jib 9.
  • the pulley block 15 and the pulley 16 are supported so that the reaches of the first jib control line 17 extending between the first part 6 of the cross-member 5 and the upper end 10 of the primary jib 9 lie below the reaches of the second jib control line 19 extending between the second part 7 of the cross-member 5 and the upper end 10 of the primary jib 9.
  • the radius arm 28 is pivotally mounted on the base 1 by brackets 48, but its free end is released from the base 1 so as to allow the radius arm 28 to extend perpendicularly from the base 1.
  • the anchorage means 18 comprise a linkage connecting pulley 39 to a swivel 49 rotatably mounted in jaws 50 at the outer end of the radius arm 28.
  • the universal pivot means 2 are mounted on the centre line 51 of the deck 1 of a ship 52 between fore and aft holds 53 and 54.
  • the radius arm 28 extends forwardly of the brackets 49 and is held against the deck 1 by a shear pin 30 which is received in holes formed in a first pair of jaws 55 attached to the base 1.
  • a second pair of similar jaws 35 are also mounted on the base 1 for receiving a second shear pin 3 to hold the radius arm 28 flat on the base 1, when the radius arm 28 extends aft, as shown in Figure 4.
  • the topping and slewing winch 41 is unwound and the topping and slewing winch 34 is wound in so that the first jib control line 17 pulls the primary jib 9 in the required direction. As shown, this pulling is effected from the first part 6 of the cross-member 5 and from the anchorage means 18 which are held in their position 26.
  • the first topping and slewing winch 34 is unwound and the second topping and slewing winch 41 is wound in so that the second jib control line 19 pulls the primary jib 9 in the required direction from the second part 7 of the cross-member 5.
  • the second jib control line 19 has no reach extending from the upper end 10 of the primary jib 9 to the base 1, adequate control is effected during this movement as a result of the fact that the second part 7 is spaced by a larger distance 21 fromthe reference point 8 on the cross-member 5, above the universal pivot means 2, than the distance 20 between the first part 6 of the cross-member 5 and the reference point 8. As shown, the ratio of these distances 20 and 21 is 3 : 1.
  • the shear pins 30 are removed from the pairs of jaws 55, so as to release the radius arm 28 for pivotal movement about the brackets 49.
  • the primary jib 9 is then pulled as far as possible in the required direction by means of the first jib control line 17 and then pulled through a position in which the primary jib 9 extends laterally of the mast 3, as shown in Figure 1, and into a position on the aft side of the cross-member 5 by pulling on the loading hook 44.
  • the first jib control line 17 is then slackened so as to allow the radius arm 28 to be locked against the base 1, between the aft jaws 35 and held in place by reinserting the shear pin 30. Thereafter, slewing movement of the primary jib 9 is carried out in an analogous matter to that already described with reference to Figures 2 and 3.
  • the pulley 16 has been shown on opposite sides of the primary jib 9. However, as hereinbefore described, it is actually permanently mounted on one side of the primary jib 9.
  • the crane is provided with secondary jibs 22 for lighter duty working of the fore-and-aft holds 53 and 54.
  • these secondary jibs 22 are mounted on universal pivot means 56 disposed fore and aft of the universal pivot means 2 for the primary jib 9.
  • the primary jib 9 is pulled sideways from the position shown in Figure 1 so as to nest in a recess in the end of the cross-member 5, adjacent the first part 6 of the cross-member 5.
  • втори ⁇ ески ⁇ и jibs 22 are then raised from stowed positions on the base 1 and supported by further jib control lines 25 which are rigged, respectively, on opposite sides of the cross-member 5.
  • Further hoisting means 23, respectively co-operable with the light-duty, secondary jibs 22 each include a hoisting winch and hoisting line 24 and jib control lines 25, on the fore and aft sides of the cross-member 5 are provided for supporting the secondary jibs 22.
  • the hoisting and jib control lines co-operable with each secondary jib 22 are trained over pulleys supported on the cross-member 5 and so these lines may be held clear of the lines rigged for the primary jib 9 when the secondary jibs 22 are stowed on the base 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

La premiere fleche (9) de la grue est supportee, a son extremite superieure (10), par une premiere et une seconde lignes de commande de la fleche (17 et 19) s'etendant jusqu'a l'extremite superieure (10) de la premiere fleche (9) a partir de la premiere et seconde parties (6 et 7) d'un organe transversal (5) s'etendant lateralement par rapport a un mat de support (3). La premiere ligne de commande de la fleche (16) s'etend egalement a partir de l'extremite superieure (10) de la premiere fleche (9) jusqu'a une embase (1). La seconde ligne de commande de la fleche (18) ne possede pas cette extension. Un support adequat est prevu parce que la seconde partie (7) est plus ecartee que la premiere partie (6) d'un point de reference intermediaire (8) de l'organe transversal (5) dispose au-dessus de l'extremite inferieure pivotante (11) de la premiere fleche (9). La premiere partie (6) de l'organe transversal (5) et ledit point de reference (8) sont disposes du meme cote du mat (3) de sorte que la premiere fleche (9) puisse pivoter autour du mat (3).
EP19800900558 1979-03-29 1980-03-31 Grue de bateau avant-arriere de grande puissance Withdrawn EP0079328A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7910966 1979-03-29
GB7910966 1979-03-29

Publications (1)

Publication Number Publication Date
EP0079328A1 true EP0079328A1 (fr) 1983-05-25

Family

ID=10504198

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800900558 Withdrawn EP0079328A1 (fr) 1979-03-29 1980-03-31 Grue de bateau avant-arriere de grande puissance

Country Status (2)

Country Link
EP (1) EP0079328A1 (fr)
WO (1) WO1980002136A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR397365A (fr) * 1908-12-12 1909-05-06 Roger Puissesseau Dispositif pour le chargement et le déchargement des navires
GB418425A (en) * 1934-05-10 1934-10-24 Colin Mitchell Improvements relating to ship's derrick gear
DE1020544B (de) * 1955-12-08 1957-12-05 Paul A H Lembke Schiffsladegeschirr, bestehend aus einem zwischen zwei Pfosten durchschwingbaren Ladebaum
DE1094617B (de) * 1959-04-08 1960-12-08 H C Stuelcken Sohn Schiffsladevorrichtung
GB1106325A (en) * 1963-10-12 1968-03-13 H C Stuelcken Sohn Ship's loading derrick
FR1507438A (fr) * 1966-01-04 1967-12-29 Weser Ag Appareil de levage pour navire
JPS498758B1 (fr) * 1968-08-09 1974-02-28
GB1248410A (en) * 1968-12-19 1971-10-06 Testing Associates Inc Improvements in or relating to derricks for ships
SE382318B (sv) * 1969-01-10 1976-01-26 Speedcranes Ltd Kran, lastbom e.d.
DE2703684B2 (de) * 1977-01-29 1978-11-16 Flender Werft Ag, 2400 Luebeck Schiffsladevorrichtung mit an einem zwischen mindestens zwei Luken aufgestelltem Mast angeordneten Schwergutladebaum und mehreren Leichtgutladebäumen
US4191502A (en) * 1978-08-22 1980-03-04 Kawasaki Jukogyo Kabushiki Kaisha Cargo-handling machine with 300-degree operational azimuth range for shipboard use

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8002136A1 *

Also Published As

Publication number Publication date
WO1980002136A1 (fr) 1980-10-16

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Inventor name: MORRISON, ROBERT