US3567040A - Luffing and slewing jib crane - Google Patents

Luffing and slewing jib crane Download PDF

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Publication number
US3567040A
US3567040A US735879A US3567040DA US3567040A US 3567040 A US3567040 A US 3567040A US 735879 A US735879 A US 735879A US 3567040D A US3567040D A US 3567040DA US 3567040 A US3567040 A US 3567040A
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Prior art keywords
jib
pulleys
crane
around
pulley
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Expired - Lifetime
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US735879A
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English (en)
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John S Thomson
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/101—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means for containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
    • 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 crane has a single load cable which is reeved about the jib head and the upper of the two portions in such a way that, in addition to resisting reactionary rotation of the upper portion of the load-handling device, the device is enabled to maintain its horizontal position irrespective of the angle of elevation of the jib or list of the ship.
  • VJWM AT TORNE YS member is adapted for suspension from the crane by load cable reaches which are reeved round around pulleys or sheaves provided on said upper member and which emanate from a trolley adapted to traverse a horizontal track on an overhead structure of the crane.
  • the aforesaidcable reaches which are so disposed and spaced apartas to resist rotation of the upper member of the ⁇ orienting means and also swinging of said means and the object attached thereto, are formed by a plurality of cables which are connected to winch means on the itrolley or are guided from the trolley to winch means located elsewhere on the crane.
  • incorporating object orienting means comprising two members so connected together as to be rotatable relative to each other about a vertical axis through the medium of power operated means, wherein supporting cable reaches are formed by reeving a single cable, connected to winch means, upward and downward between pulley means located on the freeend of the jib and on both sides thereof and pulley means on the upper of said members, said pulley means comprising a plurality of pulleys so arranged as to space apart, at a suitable ⁇ distance from each other, said supporting reaches.
  • the object is balanced on the orienting means, i.e. with its center of gravity coincidental with the axis of rotation of said means, said means is enabled to be maintained substantially horizontally level irrespective of the angle of elevation of the jib, and in the case of ships cranes, irrespective also of a ship s lists.
  • FIG. 3 is an end elevational view of the structure of FIG. 2, showing an outside view ⁇ of the load attachment.
  • FIG. 4 is a plan view taken on the line 4-4 of FIG. 2.
  • the crane shown is in effect an adaptation of the crane described in my prior U.S. Pat. No. 3,191,779, and comprises a jib 1 which is pivotally mounted at 2 on a trunnion 3 ⁇ secured to a ships deck 4, with a bridgelike structure which provides an anchorage for the pulley blockscarrying the cranes various cables, and which consists of a cross member 5 disposed transversely of the deck above the vtrunnion 3 and supported by two columns 6 upstanding from the deck.
  • the jib head 7 of the crane is provided with an Outrigger 8 carrying a pulley block 9 at each of its ends, and two coaxial pulleys 10 are mounted at the end of the jib head, one ⁇ on each side thereof.
  • four coaxial pulleys are also mounted on the jib head, two of these pulleys, l1 and l2, being disposed in juxtaposition on each side of the jib head and located approximately midway between the outrigger and the pulleys l0.
  • the crane also includes cargo, luffmg and] slewing Winches, but only the two winding drums 13 of the first mentioned are shown, since the other Winches referred to ⁇ are irrelevant to the invention.
  • the Iuffmg and slewing cables, ⁇ and pulley means associated therewith, are also irrelevant to the invention and, apart from the fragments thereof shown( in chaindotted lines at 14, are omitted from the drawing.
  • the load cable of the crane comprises a single length of cable 15 having its ends wound in the same direction around the winding drums 13, wherefrom it is arranged in the manner hereinafter described.
  • the load attachment comprises two main members of which the first, 16, is shown for simplicity as a horizontal rectangular plate having a centrally located bearing 17 for a vertical shaft 18.
  • Two rows of pulley blocks are attached to the top of the member 16, one row being located near, and parallel to, each end of the member. These rows each com prise four pulley blocks which are symmetrically spaced on opposite sides of the plane coincidental with the line 2-2 of FIG. 3, the row nearer the'jib 1 consisting of two inner blocks l19 and two outer blocks 20, and the row farther from the jib consisting of two inner blocks 21 and two outer blocks 22.
  • the second main member 23 of the load attachment is also shown in the drawing as a horizontal rectangular plate of the same size and proportions as the member 16.
  • the shaft 18 passes through a central hole in the member 23 and is secured to the underside of the member by a flange 24 provided on the shaft.
  • the shaft is also provided with a collar 25 at its upper end, adjacent the bearing 17.
  • An electric motor 26, with self-contained speed-reduction gearing, is mounted on the underside of the member 16, near a corner thereof, and is connected by a coupling 27 to the shaft of a worm 28 which engages a worm wheel 29mounted on the shaft 18 adjacent the lower end of the bearing 17.
  • the worm shaft is journaled, at each end of the worm, in bearings 30 which are adapted to withstand the thrust imposed on the worm by the power transmitting effort thereof.
  • a hub 3l which carries the inner ends of six equispaced and radially arranged axles 32, on the outer ends of which are rotatably mounted flanged rollers 33.
  • the axles are secured to the member 23 by brackets 34 located adjacent the inner sides of the rollers.
  • the rollers are adapted to rotate on a circular rail 35 concentric with the shaft 18, and the rail 35 is mounted on a carrier member 36 which extends outwardly from and around the rail and is connected to the member 16 by six vertically disposed round tubes or ties 37 which are equispaced concentrically with the shaft 18 outside the path of rotation of the rollers and worm wheel.
  • adjacent ties 37 may be connected together by crossbracing struts (not s hown).
  • Eyes 38 are secured to the underside of member 23, at each corner thereof, for the attachment of chain or rope slings 39, which are connected to a lifting frame 40 fixed to the top of ⁇ an object in the form ofa container 41, as shown in FIG. l.
  • the single load cable is arranged in two runs whereof the ends are wound in the same direction around the winding drums 13.
  • the runs pass from the winch to and around two pulley block 42 anchored to the crossmember 5, and thence to the sides of the jib head 7.
  • Each run is then reeved, on the appropriate side of the jib head and member 16 of the load attachment, first around the pulley 11 on the jib head, then downward to and around the pulleys 19 and 21 on the member 16, then upward to and around the pulley 12 on the jib head, then to and around the pulley 10 at the end of the jib head, then downward to and around the pulleys 22 and 20 on the member 16, and finally upward to the outrigger 8, where both runs of the cable form a terminal loop 15a (see FIG. 3) reeved around and extending between the pulley blocks 9.
  • the load attachment is suspended from the jib head by eight cable reaches which, between them, support the combined weight of the load and load attachment.
  • the lifting frame is shown in FIG. 1 as a simple rectangular structure, it may incorporate known means (not shown) adapted automatically to balance the objects attached to the crane, and, although not shown in the drawings, the electric motor 26 would be controlled by the crane driver from his operating station, or by another person assigned to this duty, by means of ⁇ , for example, a control box suspended from the cranes boom.
  • the motor would be connected to the cranes electric power supply and to the motor-controlling means by a f'lexible cable or cables suitably supported by the crane.
  • the winch drums 13 are so arranged that both can be driven in unison, or one drum only driven while the other is held at rest, according to the weights of the objects being handled by the crane.
  • the motor 26 In the operation of the crane and load attachment just described, and when it is required to turn an object into posi tion for stowing, loading, or otherwise being deposited, the motor 26 is operated in the appropriate rotational direction.
  • the motor thereupon through the medium of the worm 28, worm wheel 29 and shaft 18, causes the members 23 and 16, with the respective parts connected thereto, slowly to rotate in relation to each other, whereby the rollers 33 roll on the rail 35.
  • the member 16 will be constrained to react by rotating to some extent in the reverse direction, until the resistance to this rotation produced in the suspending cable reaches becomes sufficient to overcome the inertia of the load and parts rotatable therewith.
  • the load thereupon will start to rotate towards the required position, and by stopping the motor in time to allow for the return rotation of the member 16, the load will rotate into a position approximating that required. Thereafter, adjustment of the loads position can be made by one or two men when the load is being finally lowered.
  • the weight of the objects being handled is transferred from the member 16 to the member 23 through the medium of the rollers, circular rail and other parts associated therewith, thereby substantially relieving the shaft 18 of all but the torsional stresses produced by the motor-driven worm gearing.
  • the objects being handled are maintained substantially in a level trim, even should the cranes be inclined, for example, on listing ships.
  • This feature is due to the reeving of the single cable, which permits the suspending reaches thereof to be self-accommodating in their lengths.
  • a crane having load cable means and a load attachment comprising a first member suspended from the crane by reaches of said load cable means, a second member, means for securing a load to said second member, means connecting said second member to said first member for rotation of said second member relative to said first member about a vertical axis, power-operated means for effecting said rotation, the said cable reaches being so spaced apart relative to the crane and said first member as to effect resistance to, and restrict, reactionary rotation of said first member resulting from the action of said power-operated means, pulley means on the crane and on said first member with which said load cable reaches cooperate in such a way that the load is substantially maintained in proper trim while being raised, moved, turned and lowered by the crane, said load cable reaches being formed by a single length of load cable so as to be self-accommodating in regard to their respective lengths, winch means for said cable, said cable having its ends connected to the winch means and passing in two runs to the pulley means on the crane, the said runs then being
  • a crane having a jib, means mounting the jib for luffing and slewing movements, a single load cable, winch means for winding and unwinding said single cable, upper and lower members connected together for rotation relative to each other about a vertical axis to support an object from the crane and to orient said object relative to the crane, power means for rotating said upper and lower members relative to each other, said single cable being reeved upward and downward between pulley means located respectively on the free end of the jib and on both sides of the free end of the jib and on said upper member, an Outrigger on the jib near the free end thereof and extending to opposite sides thereof, a pulley mounted on each side of the jib at the free end thereof, a pulley at each end of said Outrigger, and two pulleys mounted on each side of the jib and located intermediate the end ofthe jib mediately located pulleys on the ⁇ jib, then to and around

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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)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Artificial Filaments (AREA)
US735879A 1967-06-09 1968-06-10 Luffing and slewing jib crane Expired - Lifetime US3567040A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26844/67A GB1162878A (en) 1967-06-09 1967-06-09 Improvements relating to Cranes for Handling Containers

Publications (1)

Publication Number Publication Date
US3567040A true US3567040A (en) 1971-03-02

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Application Number Title Priority Date Filing Date
US735879A Expired - Lifetime US3567040A (en) 1967-06-09 1968-06-10 Luffing and slewing jib crane

Country Status (8)

Country Link
US (1) US3567040A (enrdf_load_stackoverflow)
DE (1) DE1756572C3 (enrdf_load_stackoverflow)
ES (1) ES354932A1 (enrdf_load_stackoverflow)
FR (1) FR1570325A (enrdf_load_stackoverflow)
GB (1) GB1162878A (enrdf_load_stackoverflow)
NL (1) NL6807671A (enrdf_load_stackoverflow)
NO (1) NO124868B (enrdf_load_stackoverflow)
SE (1) SE341838B (enrdf_load_stackoverflow)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768664A (en) * 1972-01-12 1973-10-30 Warnowwerft Warnemuende Veb Ship loading boom installation having loading and suspension tackles and automatic guide blocks for positioning the suspension tackle by the load tackle
US4217076A (en) * 1978-09-13 1980-08-12 Raygo Wagner, Inc. Load handling vehicle with rotating grapple mechanism
US4229034A (en) * 1977-11-23 1980-10-21 Costruzioni Meccaniche Industriali Genovesi C.M.I. S.P.A. Device for the rotation of containers
US4286722A (en) * 1976-07-05 1981-09-01 Hans Tax Container loading crane with rotatable hoisting frame
US4374790A (en) * 1980-07-08 1983-02-22 Marley Company Method and apparatus for pumping concrete to form structure at elevated heights
US4932541A (en) * 1989-04-24 1990-06-12 Calspan Corporation Stabilized shipboard crane
US5253771A (en) * 1991-11-18 1993-10-19 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Counter-balanced, multiple cable construction crane
WO1997019888A1 (en) * 1995-11-24 1997-06-05 The University Of Sydney Crane with improved reeving arrangement
US6439407B1 (en) 1998-07-13 2002-08-27 The United States Of America As Represented By The Secretary Of Commerce System for stabilizing and controlling a hoisted load
US20050036859A1 (en) * 2002-12-05 2005-02-17 Franz Ehrenleitner Storage and retrieval unit
US20120067434A1 (en) * 2010-09-22 2012-03-22 Kok Seng Foo Apparatus and method for offloading a hydrocarbon fluid
US20120152366A1 (en) * 2010-09-22 2012-06-21 Keppel Offshore & Marine Technology Centre Pte Ltd Apparatus and method for offloading a hydrocarbon fluid
US20120328408A1 (en) * 2010-01-19 2012-12-27 Ah Industries A/S Method for Controlling the Orientation of a Load Suspended from a Bearing Wire About Said Bearing Wire and a Winch Arrangement
US8708172B2 (en) * 2010-04-08 2014-04-29 Korea Advanced Institute Of Science And Technology Multi-stage trolley for a crane and a crane therewith
US9016464B2 (en) 2012-04-04 2015-04-28 Sst Systems, Inc. Tilting multiplier
US9468944B2 (en) 2013-05-17 2016-10-18 Sst Systems, Inc. System and method with multi-axis tilting
US9834418B2 (en) 2012-09-21 2017-12-05 Par Systems, Inc. Boat deployment assembly and method
US9908750B2 (en) * 2010-04-01 2018-03-06 Par Systems, Inc. Tensile truss mast
US9950910B2 (en) * 2012-09-11 2018-04-24 Eltronic A/S Method for controlling the orientation of a load suspended from a bearing wire about said bearing wire and a winch arrangement
US10087051B2 (en) * 2013-04-09 2018-10-02 Liebherr-Werk Biberach Gmbh Crane comprising a crane cantilever arm, wherein the current is supplied to the load hook and/or crane trolley via a rope transmitting tractive forces
US10112118B2 (en) 2014-07-07 2018-10-30 Tait Towers Manufacturing, LLC Ride system
US10294088B2 (en) * 2014-02-25 2019-05-21 Technip France Multi-cable subsea lifting system
US10457493B1 (en) 2018-08-08 2019-10-29 Sst Systems, Inc. Indexing conveyor system and method
US10494233B2 (en) 2013-02-06 2019-12-03 Par Systems, Llc Relocatable fine motion positioner assembly on an overhead crane
CN111661766A (zh) * 2020-06-15 2020-09-15 唐熙 一种桥梁施工用辅助吊装装置
WO2021002749A1 (en) * 2019-07-01 2021-01-07 Delta Laboratories Holding B.V. Hoisting arrangement for assembly of wind turbines
CN112978575A (zh) * 2021-03-02 2021-06-18 上汽大众汽车有限公司 一种带有激光校准并翻转砂轮的吊具
US11608252B1 (en) * 2022-02-15 2023-03-21 Innovative Minds, LLC Damper systems for suspended loads

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3685669A (en) * 1970-05-04 1972-08-22 Speedcranes Ltd Derrick cranes and swinging derricks
LU78596A1 (de) * 1977-11-28 1979-06-13 Ciba Geigy Ag Monoazofarbstoffe,verfahren zu deren herstellung und ihre verwendung
IN172013B (enrdf_load_stackoverflow) * 1985-11-04 1993-03-13 Holmdahl Ulf Goeran
CN103130089A (zh) * 2011-12-05 2013-06-05 三一集团有限公司 一种场桥或岸桥集装箱吊具
CN104973513B (zh) * 2015-07-24 2017-01-25 大连海事大学 船用起重机内嵌滚柱式吊盘减摇装置
CN108249276B (zh) * 2017-12-29 2019-07-09 中铁大桥局集团第八工程有限公司 一种旋转吊装系统及起吊重物时旋转重物的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU153107A1 (enrdf_load_stackoverflow) *
US1577283A (en) * 1925-04-27 1926-03-16 Mitchell Americus Swivel hook
US3081884A (en) * 1961-06-09 1963-03-19 Manning Maxwell & Moore Inc Crane with anti-sway mechanism
US3191779A (en) * 1962-07-18 1965-06-29 John S Thomson Anti-pendulum crane rigging

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU153107A1 (enrdf_load_stackoverflow) *
US1577283A (en) * 1925-04-27 1926-03-16 Mitchell Americus Swivel hook
US3081884A (en) * 1961-06-09 1963-03-19 Manning Maxwell & Moore Inc Crane with anti-sway mechanism
US3191779A (en) * 1962-07-18 1965-06-29 John S Thomson Anti-pendulum crane rigging

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768664A (en) * 1972-01-12 1973-10-30 Warnowwerft Warnemuende Veb Ship loading boom installation having loading and suspension tackles and automatic guide blocks for positioning the suspension tackle by the load tackle
US4286722A (en) * 1976-07-05 1981-09-01 Hans Tax Container loading crane with rotatable hoisting frame
US4229034A (en) * 1977-11-23 1980-10-21 Costruzioni Meccaniche Industriali Genovesi C.M.I. S.P.A. Device for the rotation of containers
US4217076A (en) * 1978-09-13 1980-08-12 Raygo Wagner, Inc. Load handling vehicle with rotating grapple mechanism
US4374790A (en) * 1980-07-08 1983-02-22 Marley Company Method and apparatus for pumping concrete to form structure at elevated heights
US4932541A (en) * 1989-04-24 1990-06-12 Calspan Corporation Stabilized shipboard crane
US5253771A (en) * 1991-11-18 1993-10-19 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Counter-balanced, multiple cable construction crane
US6126023A (en) * 1995-11-24 2000-10-03 The University Of Sydney Crane with improved reeving arrangement
WO1997019888A1 (en) * 1995-11-24 1997-06-05 The University Of Sydney Crane with improved reeving arrangement
US6439407B1 (en) 1998-07-13 2002-08-27 The United States Of America As Represented By The Secretary Of Commerce System for stabilizing and controlling a hoisted load
US6644486B2 (en) 1998-07-13 2003-11-11 The United States Of America As Represented By The Secretary Of Commerce System for stabilizing and controlling a hoisted load
US20050036859A1 (en) * 2002-12-05 2005-02-17 Franz Ehrenleitner Storage and retrieval unit
US7150367B2 (en) * 2002-12-05 2006-12-19 Eisenmann Maschinenbau Kg (Komplementar: Eisenmann-Stiftung) Storage and retrieval unit
CN100443386C (zh) * 2002-12-05 2008-12-17 艾森曼机械制造两合公司（无限责任股东：艾森曼-基金会） 货架操作装置
US9238569B2 (en) * 2010-01-19 2016-01-19 Ah Industries A/S Method for controlling the orientation of a load suspended from a bearing wire about said bearing wire and a winch arrangement
US20120328408A1 (en) * 2010-01-19 2012-12-27 Ah Industries A/S Method for Controlling the Orientation of a Load Suspended from a Bearing Wire About Said Bearing Wire and a Winch Arrangement
US9908750B2 (en) * 2010-04-01 2018-03-06 Par Systems, Inc. Tensile truss mast
US8708172B2 (en) * 2010-04-08 2014-04-29 Korea Advanced Institute Of Science And Technology Multi-stage trolley for a crane and a crane therewith
US9004102B2 (en) * 2010-09-22 2015-04-14 Keppel Offshore & Marine Technology Centre Pte Ltd Apparatus and method for offloading a hydrocarbon fluid
US20120152366A1 (en) * 2010-09-22 2012-06-21 Keppel Offshore & Marine Technology Centre Pte Ltd Apparatus and method for offloading a hydrocarbon fluid
US9004103B2 (en) * 2010-09-22 2015-04-14 Keppel Offshore & Marine Technology Centre Pte Ltd Apparatus and method for offloading a hydrocarbon fluid
US20120067434A1 (en) * 2010-09-22 2012-03-22 Kok Seng Foo Apparatus and method for offloading a hydrocarbon fluid
US9016464B2 (en) 2012-04-04 2015-04-28 Sst Systems, Inc. Tilting multiplier
US9409730B2 (en) 2012-04-04 2016-08-09 Sst Systems, Inc. Tilting multiplier
US9617085B2 (en) 2012-04-04 2017-04-11 Sst Systems, Inc. Tilting multiplier
US9950910B2 (en) * 2012-09-11 2018-04-24 Eltronic A/S Method for controlling the orientation of a load suspended from a bearing wire about said bearing wire and a winch arrangement
US9834418B2 (en) 2012-09-21 2017-12-05 Par Systems, Inc. Boat deployment assembly and method
US10494233B2 (en) 2013-02-06 2019-12-03 Par Systems, Llc Relocatable fine motion positioner assembly on an overhead crane
US10087051B2 (en) * 2013-04-09 2018-10-02 Liebherr-Werk Biberach Gmbh Crane comprising a crane cantilever arm, wherein the current is supplied to the load hook and/or crane trolley via a rope transmitting tractive forces
US9468944B2 (en) 2013-05-17 2016-10-18 Sst Systems, Inc. System and method with multi-axis tilting
US10294088B2 (en) * 2014-02-25 2019-05-21 Technip France Multi-cable subsea lifting system
US10112118B2 (en) 2014-07-07 2018-10-30 Tait Towers Manufacturing, LLC Ride system
US10457493B1 (en) 2018-08-08 2019-10-29 Sst Systems, Inc. Indexing conveyor system and method
WO2021002749A1 (en) * 2019-07-01 2021-01-07 Delta Laboratories Holding B.V. Hoisting arrangement for assembly of wind turbines
CN111661766A (zh) * 2020-06-15 2020-09-15 唐熙 一种桥梁施工用辅助吊装装置
CN112978575A (zh) * 2021-03-02 2021-06-18 上汽大众汽车有限公司 一种带有激光校准并翻转砂轮的吊具
US11608252B1 (en) * 2022-02-15 2023-03-21 Innovative Minds, LLC Damper systems for suspended loads
WO2023158573A1 (en) * 2022-02-15 2023-08-24 Innovative Minds, LLC Damper systems for suspended loads

Also Published As

Publication number Publication date
NL6807671A (enrdf_load_stackoverflow) 1968-12-10
SE341838B (enrdf_load_stackoverflow) 1972-01-17
NO124868B (enrdf_load_stackoverflow) 1972-06-19
FR1570325A (enrdf_load_stackoverflow) 1969-06-06
DE1756572B2 (de) 1974-03-07
ES354932A1 (es) 1969-11-16
DE1756572A1 (de) 1970-08-13
GB1162878A (en) 1969-08-27
DE1756572C3 (de) 1974-10-10

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