US3317057A - Derricks - Google Patents

Derricks Download PDF

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Publication number
US3317057A
US3317057A US528618A US52861866A US3317057A US 3317057 A US3317057 A US 3317057A US 528618 A US528618 A US 528618A US 52861866 A US52861866 A US 52861866A US 3317057 A US3317057 A US 3317057A
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US
United States
Prior art keywords
boom
loading
winch
block
column
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.)
Expired - Lifetime
Application number
US528618A
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English (en)
Inventor
Hans E Gjelsteen
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.)
BERGENS MEK VERKSTED
BERGENS MEKANISKE VERKSTEDER AS
Original Assignee
BERGENS MEK VERKSTED
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 BERGENS MEK VERKSTED filed Critical BERGENS MEK VERKSTED
Application granted granted Critical
Publication of US3317057A publication Critical patent/US3317057A/en
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Expired - Lifetime legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/04—Arrangement of ship-based loading or unloading equipment for cargo or passengers of derricks, i.e. employing ships' masts

Definitions

  • This invention relates to derricks and, in particular, derricks which are capable of handling two different loads.
  • derrick in this specification is meant any apparatus which can be used for lifting weights, whether on ships or on land.
  • booms employing a second loading means suspended at a shorter distance from the inner end of the boom than the normal loading means and serving to raise and lower the heavier loads, their construction and operation has left much to be desired.
  • a derrick arrangement comprises a boom having suspended at its outermost end a loading means and, at a distance inwards of said outermost end, another loading means, both loading means being rigged with respective loading lines which are guided therefrom to separate winch means via a common top rope block and means associated with each loading means forlifting the boom by direct engagement therewith, the arrangement being such that one winch can be used as a topping winch and the other as a loading winch and vice-versa.
  • each lifting means constitutes a stop element formed integrally with the loading means and adapted to bear against a corresponding stop on the boom.
  • the top rope block is connected at one end to a hinge pivotably mounted on the supporting column while the other end is connected by tension bars to a forked bolt about which the lower end of the boom pivots in a vertical plane, said forked bolt, in turn, being mounted adjacent the column to permit the boom to pivot also in a horizontal plane and said top rope block and said tension bars both being pivotable in a vertical plane, the arrangement such that when the boom is raised or lowered the loading means can be guided substantially horizontally.
  • FIGURE 1 is a schematic side view of a derrick arrangement showing one mode of use
  • FIGURE 2 is a view corresponding to FIGURE 1 showing the arrangement when used in an alternative manner.
  • a mast or crane column 1 having a boom or crane beam 2 which is mounted, for pivotal movement in the vertical plane, on a boom forked "ice bolt 3, which in turn is mounted in a boom pin 3a or other device which permits the boom or beam 2 to pivot in the horizontal plane.
  • the arrangement which is used to pivot the boom 2 backwards and forwards and to be locked at a definite angular position, is excluded for the sake of simplicity, since it does not play any role in the invention and can in itself be of known construction.
  • a loading hook 4 for normal loads and this can be suspended by, for example, a single covered rope 5 which is led over a pulley 6 at the outer end of the boom or beam and to a top rope block 7, where it is led over a pulley 8 and further down over a guide pulley 9 on to a normal loading winch 10.
  • the loading hook 4 can, if required, be suspended in a loading block having several pulleys, but this will mean, in that case, several pulleys in the mast and in the top rope block.
  • the loading hook 4 is provided at the top with a stop plate 11 which, on sufficiently drawing in the covered cable 5 on the winch drum, will bear against a stop 12 on the under side of the boom or the crane beam 2, and on continued drawing it will lift (top) this boom or crane beam.
  • a leading hook or loading block 13 for heavier loads is suspended at a suitable distance further in on the boom or crane beam 2.
  • the associated covered cable 14 is led over guide pulleys 15 and further over pulleys 16, 17 in the top rope block, and its one end is secured at a fixed point 18 on the boom or crane beam 2 and its other end is led over a guide pulley 19 to another winch 20.
  • the number of pulleys in the loading block 13, the boom and the top rope block can of course be varied, all according to the loading power which is desired.
  • the loading block 13 is provided with a stop plate 21 which, on drawing in the covered cable 14, will bear against a stop 22 on the under side of the boom or the crane beam 2, and on continued drawing it will lift (top) this boom or crane beam.
  • the loading block or the loading hook 13 can be used to raise or lower cargo by means of the winch 20, while, with cargo on the loading block 13, the boom or crane beam 2 can be raised or lowered by means of the winch 10 and the associated covered cable 5.
  • the winch 10 can then be used as a topping winch, while the winch 20 is used as a loading winch.
  • This construction is especially advantageous for cargo boats, where for heavy loads troublesome preparations must often be undertaken with the rigging of a heavy loads boom, which, for the most part of the time, would otherwise stand fixed and unused in the raised position.
  • the outer hook 4 will be used as a rule for normal loading and unloading, while the loading block 13 and the associated covered cable 14 and the winch 20 is used for topping.
  • the handling of a heavy load is etfected quite simply in that the covered cable 5 is drawn in until the stop plate 11 rests against the stop 12, whereupon the loading block 13 is lowered and is used for lifting.
  • top rope block 7 is connected to the boom forked bolt 3 by tie bars 23, and in that a pivot bolt 24 forms a mounting for a pivotable top rope hinge 25, whereby the connections between the top rope hinge 25 and the top rope block 7, between the top rope block 7 and the tie bars 23, and between the tie bars 23 and the boom forked bolt 3, are all rotatable in the vertical plane.
  • a pivot bolt 24 forms a mounting for a pivotable top rope hinge 25, whereby the connections between the top rope hinge 25 and the top rope block 7, between the top rope block 7 and the tie bars 23, and between the tie bars 23 and the boom forked bolt 3, are all rotatable in the vertical plane.
  • the top rope hinge 25 with its pivot bolt 24 is balanced for large tilting moments and the tension forces in the bars 23 reduce the boom pressure against the boom pin or the boom pivot arrangement.
  • an important advantage which is obtained by means of the afore-mentioned feature is that the guidance of both covered wires and 14 can be arranged in a constructively simple manner so that there is achieved a very good approximately horizontal guidance for both loads on topping of the boom or crane beam 2, which makes it simpler to place or carry the cargo anywhere within the range of the boom.
  • a derrick arrangement comprising an upright column, a boom, means supporting said boom at its innermost end on said column for pivotal movement in both a horizontal plane and a vertical plane, means operable to pivot and lock said boom in a definite angular orientation, first loading means suspended at the outermost end of said boom, second loading means suspended a distance inwardly of the outermost end of said boom, a pair of winch means and respective loading lines each connecting a respective winch means to a respective loading means; the improvement comprising a common block mounted on said column above said winch means; said loading means being permanently rigged with their respective loading lines and both of said loading lines passing through said common block to their respective winch means; and respective lift means, each associated with a respective loading means and operable directly to engage and lift said boom; whereby either winch means can be used as a topping win-ch and the other used as a loading winch.
  • a hinge pivotally mounted on said column for pivoting about an axis substantially parallel to said column, said block being connected at one end to said hinge; said means supporting said boom at its innermost end on said column for pivotal movement in a vertical plane comprising a forked bolt mounted adjacent said column for pivotal movement about an axis substantially parallel to said column; and tension bars connecting the outer end of said block to said forked bolt; whereby said boom is pivotal in a horizontal plane and said block and said tension bars are pivotal in a vertical plane; the arrangement being such that, when said boom is raised or lowered, said loading means will remain in substantially the same horizontal plane.
  • each lifting means constituting a stop element formed integrally with the respective loading means and adapted to bear against a respective corresponding stop on the boom.
  • An arrangement according to claim 2 having a single loading means and associated loading line and winch means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Jib Cranes (AREA)
US528618A 1965-03-16 1966-02-18 Derricks Expired - Lifetime US3317057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO15722765 1965-03-16

Publications (1)

Publication Number Publication Date
US3317057A true US3317057A (en) 1967-05-02

Family

ID=19909145

Family Applications (1)

Application Number Title Priority Date Filing Date
US528618A Expired - Lifetime US3317057A (en) 1965-03-16 1966-02-18 Derricks

Country Status (5)

Country Link
US (1) US3317057A (enrdf_load_stackoverflow)
DK (1) DK111061B (enrdf_load_stackoverflow)
GB (1) GB1086014A (enrdf_load_stackoverflow)
NL (1) NL6603426A (enrdf_load_stackoverflow)
SE (1) SE306476B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518090A (en) * 1981-08-18 1985-05-21 Coles Cranes Limited Booms for cranes and the like
US20160340155A1 (en) * 2015-05-22 2016-11-24 Jones Ernest R Tiltable and rotatable lifting pole assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002464C2 (de) * 1980-01-24 1984-07-19 Blohm + Voss Ag, 2000 Hamburg Ladegeschirr mit in einem Lümmellager zwischen zwei Pfosten hindurchschwenkbarem Ladebaum

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1481351A (en) * 1920-10-04 1924-01-22 Clyde E Cochran Industrial truck
US2198793A (en) * 1937-09-02 1940-04-30 Yale & Towne Mfg Co Tilting boom

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1481351A (en) * 1920-10-04 1924-01-22 Clyde E Cochran Industrial truck
US2198793A (en) * 1937-09-02 1940-04-30 Yale & Towne Mfg Co Tilting boom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518090A (en) * 1981-08-18 1985-05-21 Coles Cranes Limited Booms for cranes and the like
US20160340155A1 (en) * 2015-05-22 2016-11-24 Jones Ernest R Tiltable and rotatable lifting pole assembly
US9862578B2 (en) * 2015-05-22 2018-01-09 Kathy Jones Tiltable and rotatable lifting pole assembly

Also Published As

Publication number Publication date
DK111061B (da) 1968-05-20
SE306476B (enrdf_load_stackoverflow) 1968-11-25
NL6603426A (enrdf_load_stackoverflow) 1966-09-19
GB1086014A (en) 1967-10-04

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