US3909863A - Bridge crane girder - Google Patents

Bridge crane girder Download PDF

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Publication number
US3909863A
US3909863A US389357A US38935773A US3909863A US 3909863 A US3909863 A US 3909863A US 389357 A US389357 A US 389357A US 38935773 A US38935773 A US 38935773A US 3909863 A US3909863 A US 3909863A
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US
United States
Prior art keywords
cable
girder
cord
loaded
bundles
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
US389357A
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English (en)
Inventor
Karl Macrander
Heinrich Kessel
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.)
VULKAN HAFENTECHNIK GmbH
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Fried Krupp AG
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Filing date
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Priority claimed from DE19722244566 external-priority patent/DE2244566C3/de
Application filed by Fried Krupp AG filed Critical Fried Krupp AG
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Publication of US3909863A publication Critical patent/US3909863A/en
Assigned to VULKAN HAFENTECHNIK GMBH reassignment VULKAN HAFENTECHNIK GMBH ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FRIED. KRUPP GMBH
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C6/00—Girders, or track-supporting structures, specially adapted for cranes

Definitions

  • References Cited has an upper cord and a lower cord, and in which at UNITED STATES PATENTS least the lower cord 1s rehevecl by preloaded cables.
  • BRIDGE CRANE GIRDER Large ships have for some time be built in such a way that they are assembled of prefabricated sections of several hundred, for instance 1600, megapont. For transporting such sections from the workshop to the shipyard, gantry cranes are employed which have a span width in excess of 150 m and a lifting height of up to 80 m. With travelling cranes built according to the box principle of these gantry cranes, the problem is encountered that the lower cord has, in view of the high pulling forces, to be conveyed thereby, at a given width to be made rather thick whereby the welding of the metal sheets forming the cord becomes rather difficult.
  • a cord thickness of 150 mm is necessary.
  • an object of the present invention to provide a bridge beam of great span width, for instance, for a gantry or a loading bridge, in such a way that con siderably smaller cord thicknesses will suffice.
  • FIG. 1 diagrammatically illustrates, partly in vertical longitudinal section through the bridge beam and partly in view, a gantry with a bridge beam according to a first embodiment of the invention.
  • FIG. 2 represents a section taken along the line II II of FIG. 1, but on a larger scale than that of FIG. 1.
  • FIG. 3 shows partly a vertical longitudinal section through the bridge beam and partly a view of a portion of a second embodiment of a gantry with a bridge beam according to the invention.
  • FIG. 4 illustrates a vertical longitudinal section through a portion of the bridge beam of FIG. 3, but on a larger scale than the latter.
  • FIG. 4a shows a detail in a different construction.
  • FIG. 5 is a section taken along the line V V of FIG. 4.
  • FIG. 6 is a section taken along the line VI VI of FIG. 4.
  • FIG. 7 shows an axial section on a larger scale than that of FIG. 6 through a device for tensioning and anchoring a cable bundle.
  • FIG. 8 is a section taken along the line VIII VIII of FIG. 7, but on a larger scale than the latter.
  • FIG. 9 is a section taken along the line IX IX of FIG. 4, but likewise on a larger scale than the latter.
  • FIG. 10 represents a section taken along the line X X of FIG. 7.
  • FIG. 11 shows a side view of a portion of a gantry with a bridge beam according to a third embodiment of the invention.
  • FIG. 12 is a section taken along the line XII XII of FIG. 11.
  • FIG. 13 illustrates, partly in a vertical longitudinal section through the bridge beam and partly in view, a gantry with a bridge beam according to the second embodiment of the invention, but with a modified cable guiding arrangement.
  • FIG. 14 is a section taken along the line XIV XIV of FIG. 13.
  • the bridge beam according to the present invention is characterized primarily in that at least the lower cord is relieved by preloaded cables.
  • the bridge beam of the embodiment shown in FIGS. 1 and 2 comprises a sheet metal box 1 which at one end merges with a fixed support 2 and at the other end rests on a link support 3.
  • a sheet metal box 1 which at one end merges with a fixed support 2 and at the other end rests on a link support 3.
  • cables 5 which extend nearly over the entire length of the bridge beam and are uniformly distributed over the width of the lower cord.
  • the cables 5 are under a preload which is generated by hydraulic presses 6.
  • the presses 6 engage the ends of the cables and rest on bearings 7 on the bridge beam.
  • the cables 5 are covered by a sheet metal plate 8.
  • the preload acting upon the cables 5 may be so selected that the pulling stresses caused by the weight itself of the bridge beam are relieved in the lower cord and that in addition thereto a pressure preload is obtained in the lower cord plate 4.
  • the pressure preload is reduced by carriages and suspended loads so that when the life load corresponds to the admissible load capacity, a pulling stress will occur in the lower cord which amounts, for instance, only to one third of the pulling force as it occurs under the same condition in the lower cord of customary design. Consequently, the lower cord plate 4 can be made relatively thin so that it can be welded in a reliable manner.
  • the bridge beam of a gantry crane consists of a plurality of sheet metal boxes 10 which are spaced from each other and are connected at their ends.
  • the fixed support is again designated with the reference numeral 2 whereas the link support is again designated with the reference numeral 3.
  • the sheet metal boxes 10 there are guided two bundles 9 of preloaded cables in such a way that only in an intermediate or central section A they extend closely above the lower cord 11 and from there extend at an incline in upward direction.
  • the deviation of the cable bundles at the ends of section A is effected by means of saddle bearings 12.
  • These bear- Zngs 12 comprise segments 13 which below girders 14 are journalled in joints 15 with their axes extending transverse to the bridge beam.
  • the cable bundles 9 rest from below against the segments 13 and are received by circular grooves of the segments 13.
  • the centers of curvature of the grooves are located in the axes of the joints 15.
  • the cable bundles 9 are in the vicinity of the ends of the boxes 10 anchored closely below the upper cord plate 16. To this end, the individual cables are out of one holding clamp 18 at each end of a cable bundle 9 extended outwardly while spreading in a fan-like manner.
  • the individual cables for instance nineteen individual cables, have a hexagonal cross section and extend parallel to each other while being combined to a cable bundle 9 as shown in FIG. 9.
  • Each of the individual cables is passed with play through a bore 20 of the segmental support. Therebehind the ends of the individual cables 17 are connected to a sleeve 21.
  • the individual wires 22, for instance thirtyseven wires, of the individual cables 17 are spread out in a conical opening which widens in the direction away from the support 19, and are held fast by a cast-in mass.
  • the wires 22 extend parallel to each other in the cables 17, which means they are not twisted.
  • a hydraulic press is arranged at each end of the cable.
  • the cylinder 24 of the press is mounted on a supporting pipe 25 which with play extends around the sleeve 21 and engages the segmental support 19.
  • the piston rod 26 which extends out of the cylinder 24 through a stuffing box carries a coupling head 27 which by means of a thread is screwed onto the front end of sleeve 21.
  • Connected to the cylinder 24 is a conduit 28 for conveying liquid under pressure. When through this conduit 28 liquid under pressure is introduced into the cylinder 24, sleeve 21 is pulled toward the left (FIG. 7) so that the individual cable will be tensioned.
  • lining pieces in the form of divided annular discs 30 are inserted between the rear end face of sleeve 21 and the segmental support 19 through openings 29 in sleeve 25 in such a way that the sleeve 21 will rest by means of the discs 30 against the segmental support 19.
  • the individual cable 17 is anchored at the obtained preload so that the hydraulic presses at the ends of the cable are relieved.
  • the preload of the cable bundles may be realized, instead of using the hydraulic presses 24, 26, by pressing the segments 13 of the bearings 12 downwardly by correspondingly arranged hydraulic presses 50, one of which is shown in FIG. 4a, and by fixing the segments 13 in their postion after the desired preload has been obtained, *In this instance, the individual cables are anchored at their ends without the employment of hydraulic presses.
  • the preloaded cable bundles 31 are guided outside of and below the bridge beam.
  • the bridge beam consists of two relatively low sheet metal boxes 32 which are arranged in spaced relationship to each other and on which there are arranged two trolleys or carriages 33, 34. From the two ends of each box 32 there extends a cable bundle 31 at an incline in downward direction to the supports 35 which extend downwardly from the box 32.
  • the cable bundle 31 extends horizontally in the intermediate section A of the bridge beam between the supports 35. Hydraulic presses 36 for tensioning the cable bundles are arranged at the ends of the cable bundles.
  • the cable bundles 31 may also be tensioned by pressing the supports 35 downwardly by means of hydraulic presses and then anchoring the same.
  • the bridge beam is considerably relieved so that a saving in sheet metal will be realized and the welding operations will be facilitated.
  • a camber of the bridge beam can be realized if desired.
  • a girder according to claim 1 which includes means operatively connected to said saddle means for adjusting the same to tension said cable means.
  • a girder according to claim 1 in which at least two cable bundles in said girder have their ends offset rela- I said girder and from the ends of said last mentioned central section extend in the end portions of said girder at an incline to the respective oppositely located side walls of said girder.
  • a girder according to claim 4 in which said cable bundles cross each other within the end sections of said girder.
  • a bridge crane girder of steel especially of the box type construction, which has an upper cord and a lower cord, and pre-loaded cable means associated with said girder and relieving at least said lower cord, said cable means being combined into cable bundles having the cable means thereof at one end of said bundles fan out, and which includes sleeve means having said fanned out portions of said cable means connected thereto, hydraulic power operable means operatively connected to said sleeve means for exerting a pulling force upon said sleeve means and thereby upon said cable means to pre-load the same, and holding means operable independently of said power operable means to maintain said cable means preloaded, a tubular body, abutment means located at one end of said tubular body and arranged stationarily relative thereto, said holding means being detachably arranged between said sleeve means and said abutment means, said tubular body having that end portion which is adjacent said abutment means provided with a window for passing said holding means therethrough, said hydraulic power operable
  • a girder according to claim 6, which includes supports connected to said lower cord and extending downwardly therefrom, and in which said pre-loaded cables extend from the girder ends in downwardly inclined direction to the lower end portions of said supports.
  • a bridge crane girder of steel with great span width especially of the box type construction, which has an upper cord and a lower cord, and pre-loaded cable means combined with said girder at least in part for reinforcement against force in horizontal direction and relieving at least said lower cord, said cable means being combined into cable bundles having the cable means thereof at one end of said bundles fan out, sleeve means having said fanned out portions of said cable means connected thereto, hydraulic power operable means operatively connected to said sleeve means for exerting a pulling force upon said sleeve means and thereby upon said cable means to pre-load the same, and holding means operable independently of said power operable means to maintain said cable means pre-loaded.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
US389357A 1972-09-11 1973-08-17 Bridge crane girder Expired - Lifetime US3909863A (en)

Applications Claiming Priority (1)

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DE19722244566 DE2244566C3 (de) 1972-09-11 Brückenkranträger

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JP (1) JPS4964149A (he)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003859A1 (en) * 1982-04-28 1983-11-10 Bonasso S G Tension arch structure
US4631772A (en) * 1983-12-28 1986-12-30 Bonasso S G Tension arch structure
US5195204A (en) * 1990-07-27 1993-03-23 J. Muller International Construction equipment and method for precast segmental bridges
US20040040100A1 (en) * 2002-09-04 2004-03-04 Mitsuhiro Tokuno Reinforcement structure of truss bridge or arch bridge
JP2006527316A (ja) * 2003-06-06 2006-11-30 ド カルモ パチェコ，ペドロ，アルバレス，リベイロ 自動調節式プレストレッシング機能を有するガントリー
US20080035010A1 (en) * 2006-08-14 2008-02-14 Mckay Douglas Mcgregor Trapezoidal strong back beam system
US20100025349A1 (en) * 2006-11-03 2010-02-04 University Of Southern California Gantry Robotics System and Related Material Transport for Contour Crafting
US20100064454A1 (en) * 2008-09-16 2010-03-18 Lawrence Technological University Concrete Bridge
DE102009013241A1 (de) * 2009-03-14 2010-09-16 Weber, Ulrike, Dipl.-Ing. Aus einem gewalzten einstückigen Stahlbauprofil bestehender Träger
CN102556844A (zh) * 2012-02-22 2012-07-11 徐清普 一种起重机主梁
RU2462411C1 (ru) * 2011-02-08 2012-09-27 Генрих Михайлович Аммосов Устройство для разгрузки балки или стержня
CN104085782A (zh) * 2014-07-11 2014-10-08 何书贵 一种桥式吊车主梁
US9309634B2 (en) 2012-04-06 2016-04-12 Lawrence Technological University Continuous CFRP decked bulb T beam bridges for accelerated bridge construction
US20160145815A1 (en) * 2013-05-14 2016-05-26 S&P Clever Reinforcement Company Ag Method for pre-stressing a steel structure, and steel structure pre-stressed using said method
USD835878S1 (en) * 2016-12-21 2018-12-11 John Rene Spronken Crane base
US11772258B2 (en) 2020-08-28 2023-10-03 Lee Machine, Inc. Systems and methods for automated building construction

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US13461A (en) * 1855-08-21 And robt
US14314A (en) * 1856-02-26 Arched trussed bridge
US435155A (en) * 1890-08-26 Tubular floor structure
US530425A (en) * 1894-12-04 Girder for truss-bridges
US2856644A (en) * 1955-07-05 1958-10-21 Royal J Ahlberg Joist brace
US2936907A (en) * 1957-11-01 1960-05-17 D W Winkelman Company Portable gantry crane
US3003217A (en) * 1957-02-25 1961-10-10 Ben C Gerwick Inc Apparatus for manufacturing prestressed concrete members
US3010257A (en) * 1960-04-20 1961-11-28 Jacob D Naillon Prestressed girder
US3084909A (en) * 1961-09-28 1963-04-09 Robert D Carr Pull down hardware
US3202394A (en) * 1963-05-17 1965-08-24 Flexicore Co Prestressing means for slab casting forms
US3283457A (en) * 1964-01-22 1966-11-08 Baltimore Concrete Plank Corp Prestressed concrete plank construction
US3427773A (en) * 1966-06-06 1969-02-18 Charles Kandall Structure for increasing the loadcarrying capacity of a beam
US3638371A (en) * 1968-11-06 1972-02-01 Viadimir D Liska Precast panel building structure and method of erecting the same

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US13461A (en) * 1855-08-21 And robt
US14314A (en) * 1856-02-26 Arched trussed bridge
US435155A (en) * 1890-08-26 Tubular floor structure
US530425A (en) * 1894-12-04 Girder for truss-bridges
US2856644A (en) * 1955-07-05 1958-10-21 Royal J Ahlberg Joist brace
US3003217A (en) * 1957-02-25 1961-10-10 Ben C Gerwick Inc Apparatus for manufacturing prestressed concrete members
US2936907A (en) * 1957-11-01 1960-05-17 D W Winkelman Company Portable gantry crane
US3010257A (en) * 1960-04-20 1961-11-28 Jacob D Naillon Prestressed girder
US3084909A (en) * 1961-09-28 1963-04-09 Robert D Carr Pull down hardware
US3202394A (en) * 1963-05-17 1965-08-24 Flexicore Co Prestressing means for slab casting forms
US3283457A (en) * 1964-01-22 1966-11-08 Baltimore Concrete Plank Corp Prestressed concrete plank construction
US3427773A (en) * 1966-06-06 1969-02-18 Charles Kandall Structure for increasing the loadcarrying capacity of a beam
US3638371A (en) * 1968-11-06 1972-02-01 Viadimir D Liska Precast panel building structure and method of erecting the same

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003859A1 (en) * 1982-04-28 1983-11-10 Bonasso S G Tension arch structure
US4464803A (en) * 1982-04-28 1984-08-14 Bonasso S G Tension arch structure
US4631772A (en) * 1983-12-28 1986-12-30 Bonasso S G Tension arch structure
US5195204A (en) * 1990-07-27 1993-03-23 J. Muller International Construction equipment and method for precast segmental bridges
US20040040100A1 (en) * 2002-09-04 2004-03-04 Mitsuhiro Tokuno Reinforcement structure of truss bridge or arch bridge
US6892410B2 (en) * 2002-09-04 2005-05-17 Asahi Engineering Co., Ltd. Reinforcement structure of truss bridge or arch bridge
JP2006527316A (ja) * 2003-06-06 2006-11-30 ド カルモ パチェコ，ペドロ，アルバレス，リベイロ 自動調節式プレストレッシング機能を有するガントリー
JP4790600B2 (ja) * 2003-06-06 2011-10-12 ド カルモ パチェコ，ペドロ，アルバレス，リベイロ 自動調節式プレストレッシング機能を有するガントリー
US20080035010A1 (en) * 2006-08-14 2008-02-14 Mckay Douglas Mcgregor Trapezoidal strong back beam system
US20100025349A1 (en) * 2006-11-03 2010-02-04 University Of Southern California Gantry Robotics System and Related Material Transport for Contour Crafting
US8029710B2 (en) * 2006-11-03 2011-10-04 University Of Southern California Gantry robotics system and related material transport for contour crafting
US20100064454A1 (en) * 2008-09-16 2010-03-18 Lawrence Technological University Concrete Bridge
US8020235B2 (en) * 2008-09-16 2011-09-20 Lawrence Technological University Concrete bridge
DE102009013241B4 (de) * 2009-03-14 2011-01-20 Weber, Ulrike, Dipl.-Ing. Aus einem einstückigen Stahlbauprofil bestehender Träger
WO2010105594A1 (de) * 2009-03-14 2010-09-23 Ulrike Weber Aus einem einstückigen stahlbauprofil bestehender träger
DE102009013241A1 (de) * 2009-03-14 2010-09-16 Weber, Ulrike, Dipl.-Ing. Aus einem gewalzten einstückigen Stahlbauprofil bestehender Träger
RU2462411C1 (ru) * 2011-02-08 2012-09-27 Генрих Михайлович Аммосов Устройство для разгрузки балки или стержня
CN102556844A (zh) * 2012-02-22 2012-07-11 徐清普 一种起重机主梁
CN102556844B (zh) * 2012-02-22 2013-12-11 徐清普 一种起重机主梁
US9309634B2 (en) 2012-04-06 2016-04-12 Lawrence Technological University Continuous CFRP decked bulb T beam bridges for accelerated bridge construction
US20160145815A1 (en) * 2013-05-14 2016-05-26 S&P Clever Reinforcement Company Ag Method for pre-stressing a steel structure, and steel structure pre-stressed using said method
US11326313B2 (en) 2013-05-14 2022-05-10 S&P Clever Reinforcement Company Ag Method for pre-stressing a steel structure, and steel structure pre-stressed using said method
CN104085782A (zh) * 2014-07-11 2014-10-08 何书贵 一种桥式吊车主梁
USD835878S1 (en) * 2016-12-21 2018-12-11 John Rene Spronken Crane base
US11772258B2 (en) 2020-08-28 2023-10-03 Lee Machine, Inc. Systems and methods for automated building construction

Also Published As

Publication number Publication date
JPS4964149A (he) 1974-06-21
DE2244566A1 (de) 1974-03-21
DE2244566B2 (de) 1977-02-17

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AS Assignment

Owner name: VULKAN HAFENTECHNIK GMBH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FRIED. KRUPP GMBH;REEL/FRAME:005725/0634

Effective date: 19900806