US3550787A - Winches - Google Patents

Winches Download PDF

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Publication number
US3550787A
US3550787A US780381A US3550787DA US3550787A US 3550787 A US3550787 A US 3550787A US 780381 A US780381 A US 780381A US 3550787D A US3550787D A US 3550787DA US 3550787 A US3550787 A US 3550787A
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US
United States
Prior art keywords
drum
plates
winch
frame
annulus
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
US780381A
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English (en)
Inventor
Raymond John Hicks
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.)
Compact Orbital Gears Ltd
Original Assignee
Compact Orbital Gears 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 Compact Orbital Gears Ltd filed Critical Compact Orbital Gears Ltd
Application granted granted Critical
Publication of US3550787A publication Critical patent/US3550787A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • B66D3/20—Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing
    • B66D3/22—Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing with variable-speed gearings between driving motor and drum or barrel

Definitions

  • a winch which may be of the crab-type, with a horizontal drum and an internal epicyclic gear drive.
  • the Winch drum is journalled in end plates which are suspended from a single point which takes all the weight of the drum when there is no load.
  • the end plates are also journalled at two further points which lie in the plane tangential to the drum surface in which the load is normally applied and so take the weight of any load.
  • a winch comprising a frame, a horizontal drum on which rope is wound, end plates for the drum in which thelatter is journaled an epicyclic gear housed in the drum and in driving connection therewith and a motor mounted on one of said end plates with a drive shaft through the drum to the epicyclic gear, the end plates being supported by the frame at three points offset from the drum axis, the first point being above the drum so that it alone takes the weight of the drum and motor assembly, and the other two points being in the same plane parallel to the drum axis as the rope load normally applied to the drum thereby to take substantially all the rope load on the drum without significantly altering the weight on said first point.
  • the drum Preferably there is an even number of rope falls from the drum symmetrical with respect to the center of the drum. For example, there may be two falls to a common pulley supporting a hook, each fall being guided by grooves of opposite hand formed in the drum surface either side of the center This will ensure that the load is evenly spread each side of the center of the drum.
  • the two support points in the plane of the rope load are also preferably symmetrical with respect to the radial plane through the center of the drum.
  • FIG. 1 is a side elevation of an open barrel crab of an overhead gantry hoist
  • FIG. 2 is an end elevation of the crab of FIG. 1;
  • FIG. 3 is a plan view of the crab of FIG. 1;
  • FIG. 4 is an axial section, to an enlarged scale; through the drum of the crab;
  • FIGS. 5a, 5b and 5c are diagrams for illustrating forces acting in or on the crab.
  • the crab of the drawing comprises a frame 1 made of parallel substantially rectangular vertical plates 2 held in spaced relation by four horizontal tubes 3, 4, 5 and 6 extending between corresponding corners of the plates 2.
  • the two lower tubes 5 and 6 are extended outside the plates and have wheels 7 mounted thereon to run on rails 8.
  • a bracket 9 (FIG. 3) on the outside of one of the plates 2 supports a motor 10 whose toothed drive shaft 11 meshes with a toothed wheel 12 integral with one of the wheels 7.
  • the motor 10 is preferably an electric motor and its power supply cables (not shown) are free to allow the motor to drive the frame 1 along the rails 8.
  • a winch drum 13 extends between the plates 2, which have coaxial apertures 14, and is supported by end or yoke plates 15 which lie close against the inside of the plates 2.
  • a braked motor 16, 17 is fixed to the corresponding drum end plate 15, and the motors are located outside the frame plates 2 and extend freely through the apertures 14. The drive supplied by these motors will be described later in connection with FIG. 4.
  • Each yoke plate 15 is substantially circular with a lug 18 projecting radially from its periphery and the two lugs are coupled by a tube 19 extending parallel to the winch drum axis and externally of the winding surface.
  • the ends of the tube 19 have studs 20 that are journaled in bushes in the lugs 18 of the yoke plates 15.
  • the bushes are, or may be, cylindrical, the effect due to the length of the drum and the relatively small size of the bushes is to allow deflection (although providing some stiffness and resistance) of the plates 15 one to another as if the bearing bushes were spherical or were universal joints.
  • the tube 19 Centrally of its length, the tube 19carries an eye 22 through which a transverse rod 23 passes, the ends of the rod 23 being fixed to thetwo upper tubes 3 and 4 which extend between the frame plates 2. The winch drum 13 is thus suspended from the single eye 22.
  • Each of the yoke plate lugs 18 also carries a trunnion 24 angularly spaced, with regard to the axis of the drum, from the tube 19.
  • the trunnions 24 are coaxial and project towards one another to be received in sockets 24A carried by brackets 24B welded to the frame 1 at the junctions of the tube 4 and the frame plates 2.
  • the eye 22 providing the single suspension point lies in a vertical plane containing the axis of the'winch drum 13.
  • the common axis of the trunnions 24 lies in a second plane which is tangential to the winch drum surface, and when the hook 25 is in a typical median position two of the falls of wire rope 26 wound on the winch drum 13 and extending between the latter and a pulley or pulleys 27 supporting the hook also lie in said second plane which intersects the vertical plane in the vicinity of the center of gravity of the load.
  • the wire rope 26 has two falls wound on two portions of the winch drum 13, the falls passing around a single pulley.
  • the falls pass around two pulleys 27 supporting the hook and up around a single pulley 28 adjacent the drum 13.
  • the pulley 28 is mounted centrally in the channel of an inverted U-section girder 28A extending between the plates 2 and forming part of the frame 1.
  • the two portions of the winch drum 13, referenced 29 and 30, lie one on either side of a vertical median plane between the plates 2. They have coarse thread rope guide grooves of opposite hand so that the rope wound on these grooves will descend tangentially of the drum from points equidistant from the median plane to the pulleys 27 and so that rotation of the drum will either wind or unwind the rope from both channels.
  • the winch drum 13 comprises the two generally cylindrical portions 29 and 30 which have radially extending flanges 31, 32, 33 and 34 welded to their ends.
  • the two central flanges 32 and 33 are bolted to opposite sides of a central ring 35 which is internally toothed and forms a drive annulus by which drive is transferred to the drum.
  • the end flanges 31 and 35 are respectively bolted to centrally apertured circular end plates 36 and 37 which are journaled by bearings 38 on substantially cylindrical spigots 39 welded I to the yoke plates 15 and extending inwardly therefrom.
  • a resilient seal 40 is provided at the outer end of each bearing 38, these bearings being retained in position by snap rings 41.
  • Elongated planet pinions 42 mesh with the teeth around the interior of the central ring 35.
  • the pinions 42 are divided into three separately toothed parts 42A, 42B and 42C along their length, the teeth of the central part 42B meshing with the drive annulus provided by the ring 35.
  • the teeth of the other two parts 42A and 42C are divided from the teeth of the central part 42B by grooves 43 and mesh with internal teeth of fixed stationary annuli 44 which surround all the planets.
  • a sun gear 45 located centrally of the planets meshes with the pinions at one end thereof.
  • the stationary annuli 44 have identical tooth numbers which differ from the drive annulus tooth number by one, for example.
  • the planets are carrierless,
  • the stationary annuli 44 have hollow hubs 47 which are splined externally and which project towards the nearest end of the drum.
  • Each yoke plate 15 has a cylindrical insert 48 projecting through the associated spigot 39 to the interior of the drum and is splined externally on the portion extending beyond the spigot 39.
  • the cylindrical inserts 48 are attached to the yoke plates by means of annular plates 49 welded to their outer ends and secured by studs 50.
  • the inner ends of the inserts 48 are coupled to the adjacent hubs 47 by means of tubes 51 whose ends are internally splined and mesh with the splines on the hubs 47 and on the inserts 48.
  • Both hubs and adjacent ends of the coupling tubes 51 have the same tooth as the stationary annuli 44 and the other end of one coupling tube and its associated yoke plate insert 48 also has the same tooth number.
  • the other end of the other coupling tube 51 and its associateed insert 48 have a tooth number differing by one to enable a vemier effect to be obtained in assembly of the yoke plates, whereby precise alignment of the trunnions 24 can be obtained.
  • the sun pinion 45 is the output member of an epicyclic reduction gear located to one side of the epicyclic drum drive gear.
  • the reduction gear comprises a driven annulus 52 coupled to a drive shaft 53 extending through one of the tubes 51.
  • the outer end of the shaft 53 is externally splined and a coupling tube 54, operating in a similar manner to the tubes 51, joins the shaft 53 to the drive shaft 55 of the motor 16.
  • a set of planets 56 mounted on a carrier 57 fixed to the sun pinion 45 meshes with the interior toothed surface of the driven annulus 52.
  • a central sun pinion 58 is meshed with the planets 56 and is on the end of a second coaxial drive shaft 59 which extends freely through the sun pinion 45, the caging rings 46, the hub 47 and the coupling tube 51 beyond to be joined by a coupling tube 60 to the output shaft 61 of the motor 17.
  • FIG. 50 is a section through one tooth of one of the pinions 42 in engagement with one tooth of the rotating drum annulus 35 and with teeth of the stationary annuli 44, the view being radial. It is assumed that unequal loading, drum distortion of frame distortion has twisted the stationary annuli with respect to one another, their mounting by the tubes 51 allowing this. It will be seen from FIG. c that in such circumstances a restoring couple is automatically created which tends to equalize tooth loading.
  • a winch comprising a frame, a horizontal drum on which plates with a drive shaft through the drum to the epicyclic gear, the end plates being supported by the frame at three points offset from the drum axis, the first point being above the drum so that it alone takes the weight of the drum and motor assembly, and the other two points being in the same plane parallel to the drum axis as the rope load normally applied to the drum thereby to take substantially all the rope load on the drum without significantly altering the weight on said first point.
  • each annulus is connected to the adjacent end plate through the intermediary of a coupling tube coaxial with the drum and splined at each end to engage with corresponding splined portions on the annulus and end plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Transmission Devices (AREA)
US780381A 1967-12-02 1968-12-02 Winches Expired - Lifetime US3550787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54942/67A GB1181679A (en) 1967-12-02 1967-12-02 Improvements in or relating to Winches

Publications (1)

Publication Number Publication Date
US3550787A true US3550787A (en) 1970-12-29

Family

ID=10472527

Family Applications (1)

Application Number Title Priority Date Filing Date
US780381A Expired - Lifetime US3550787A (en) 1967-12-02 1968-12-02 Winches

Country Status (7)

Country Link
US (1) US3550787A (xx)
CH (1) CH483985A (xx)
DE (1) DE1812238A1 (xx)
FR (1) FR1597678A (xx)
GB (1) GB1181679A (xx)
NL (1) NL6817214A (xx)
SE (1) SE347728B (xx)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6564954B1 (en) * 1996-08-22 2003-05-20 R. Stahl Fordertechnik Gmbh Rope hoist with elastic frame
CN102910551A (zh) * 2012-09-13 2013-02-06 林淑琴 一种便携式起重机
CN106315409A (zh) * 2016-10-17 2017-01-11 无锡市日升化工有限公司 一种具有调速功能的吊装架
US10464791B2 (en) * 2017-03-06 2019-11-05 Cameron International Corporation Drawworks systems and methods
US10508715B2 (en) 2017-03-06 2019-12-17 Cameron International Corporation Motor assembly for drawworks systems and methods
US10697254B2 (en) 2018-04-10 2020-06-30 Cameron International Corporation Drawworks system with variable frequency drive
CN111483926A (zh) * 2020-04-27 2020-08-04 三一海洋重工有限公司 起重机和起重机绳索偏角调整方法
US11191191B2 (en) 2017-12-11 2021-11-30 Schlumberger Technology Corporation Air cooled variable-frequency drive
US20220112054A1 (en) * 2018-12-19 2022-04-14 Konecranes Global Corporation Trolley of rope crane
CN114751522A (zh) * 2022-03-22 2022-07-15 天津大学 一种无人自控式湖泊水域水环境改善装置
CN117163829A (zh) * 2023-11-02 2023-12-05 诺尔起重机有限公司 一种高稳定性双轨组合式轻型起重机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4134742C1 (xx) * 1991-10-21 1992-12-10 Fuerstlich Hohenzollernsche Werke Laucherthal Gmbh & Co, 7480 Sigmaringen, De
GB2323124B (en) * 1997-03-11 2000-12-06 Delphi Automotive Systems Gmbh Electrically operated slidable door actuator

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6564954B1 (en) * 1996-08-22 2003-05-20 R. Stahl Fordertechnik Gmbh Rope hoist with elastic frame
CN102910551A (zh) * 2012-09-13 2013-02-06 林淑琴 一种便携式起重机
CN106315409A (zh) * 2016-10-17 2017-01-11 无锡市日升化工有限公司 一种具有调速功能的吊装架
US10464791B2 (en) * 2017-03-06 2019-11-05 Cameron International Corporation Drawworks systems and methods
US10508715B2 (en) 2017-03-06 2019-12-17 Cameron International Corporation Motor assembly for drawworks systems and methods
US11191191B2 (en) 2017-12-11 2021-11-30 Schlumberger Technology Corporation Air cooled variable-frequency drive
US10697254B2 (en) 2018-04-10 2020-06-30 Cameron International Corporation Drawworks system with variable frequency drive
US11858782B2 (en) * 2018-12-19 2024-01-02 Konecranes Global Corporation Trolley of rope crane
US20220112054A1 (en) * 2018-12-19 2022-04-14 Konecranes Global Corporation Trolley of rope crane
CN111483926A (zh) * 2020-04-27 2020-08-04 三一海洋重工有限公司 起重机和起重机绳索偏角调整方法
CN114751522B (zh) * 2022-03-22 2023-10-13 天津大学 一种无人自控式湖泊水域水环境改善装置
CN114751522A (zh) * 2022-03-22 2022-07-15 天津大学 一种无人自控式湖泊水域水环境改善装置
CN117163829A (zh) * 2023-11-02 2023-12-05 诺尔起重机有限公司 一种高稳定性双轨组合式轻型起重机
CN117163829B (zh) * 2023-11-02 2024-02-06 诺尔起重机有限公司 一种高稳定性双轨组合式轻型起重机

Also Published As

Publication number Publication date
CH483985A (fr) 1970-01-15
SE347728B (xx) 1972-08-14
DE1812238A1 (de) 1969-11-27
NL6817214A (xx) 1969-06-04
FR1597678A (xx) 1970-06-29
GB1181679A (en) 1970-02-18

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