EP2942317A1 - Grue - Google Patents

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Publication number
EP2942317A1
EP2942317A1 EP15166807.6A EP15166807A EP2942317A1 EP 2942317 A1 EP2942317 A1 EP 2942317A1 EP 15166807 A EP15166807 A EP 15166807A EP 2942317 A1 EP2942317 A1 EP 2942317A1
Authority
EP
European Patent Office
Prior art keywords
cross
section
trolley
support
beam cross
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Withdrawn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
EP15166807.6A
Other languages
German (de)
English (en)
Inventor
Helmut Quirxtner
Christoph Quirxtner
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.)
Individual
Original Assignee
Individual
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
Priority claimed from ATGM195/2014U external-priority patent/AT14013U3/de
Priority claimed from ATA341/2014A external-priority patent/AT515717B1/de
Application filed by Individual filed Critical Individual
Publication of EP2942317A1 publication Critical patent/EP2942317A1/fr
Withdrawn legal-status Critical Current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
    • B66C6/00—Girders, or track-supporting structures, specially adapted for cranes

Definitions

  • This invention relates to a crane comprising a beam comprising a beam cross-section comprising a closed beam cross-sectional portion and an open beam cross-sectional portion, an at least partially beam cross-section trolley comprising a cable drum and a cable winch drive for unwinding and winding a cable, said cable passing through the open beam cross-sectional portion through at least one Opening thwarted.
  • EP339015 does not disclose a beam as part of the crane device, in the cross section of which a trolley or similar transport unit is guided.
  • DE359438 discloses a trolley with a suspended rigid framework.
  • DE359438 provides no solution to the task of minimizing the height of a crane.
  • FIG. 1 from DE1906212 shows a trolley, which is guided below the beam.
  • DE2106291 also does not disclose a solution for guiding the trolley within the beam.
  • DE2555316 also does not disclose any instructions for arranging the trolley inside the carrier.
  • the figures of CN201932818 disclose a trolley located at the top of the beam.
  • DE2000128 relates to a special design of the beam to reduce the height.
  • the arrangement of the trolley will not be within the meaning of the following disclosure DE2000128 treated.
  • DE3731245 describes a special design of the cross section of the beam to achieve a high flexural rigidity.
  • US7341159 relates to a safety device.
  • DE1032497B and DE1084887B disclose the lateral connection of the support to the strut, whereby an unfavorable for the beam cross-section torque force curve is created.
  • the invention disclosed below represents a solution to the task of reducing the component height of beam cranes and a significant weight reduction over cranes according to the prior art.
  • the trolley is mounted on the beam by at least one support, which support has a Auflagergägheitsachse and initiated by the trolley on the support to be transferred force F in the bearing inertia axis in the support, which (2004)gägheitsachse - in one Cross-sectional view of the beam cross-section seen - is congruent with an axis of inertia of at least a portion of the closed beam cross-section portion, which part adjacent to the support, so that originating from the introduction of the force F cutting torque forces are prevented in the adjoining the bearing parts.
  • An embodiment of the crane according to the invention is that a vertical force F is to be transferred from the trolley to the support.
  • the person skilled in the art arranges this vertical force F in the area of the vertical axis of inertia.
  • the axis of inertia and the axis of inertia of at least a portion of the closed beam cross-section portion, which part adjoins the support are arranged congruently.
  • the person skilled in the art recognizes that, in order to receive a vertical force F, the axes of inertia of those parts of the closed beam cross-sectional subarea-seen in cross section-are congruent with the vertical bearing inertia axis, which parts have an influence on the uptake of vertical loads according to current teaching.
  • parts of a beam cross-section comprising a plurality of parts of the beam cross-section which essentially extend in the force direction have a substantial influence on the absorption of forces. Accordingly, in the main, vertically extending parts of the beam cross section of a plurality of arbitrarily oriented to the force parts of a beam cross section have a significant influence on the absorption of vertical forces.
  • the entire trolley is arranged within the beam cross-section.
  • This arrangement of the trolley requires the formation of an open cross-sectional area in order to be able to guide a hoist from the inside of the cross section.
  • the hoist can, for example a rope or a chain which is rolled up on a drum.
  • the hoist may also be a mechanical system such as a telescopic pole or a scissors lever, which are mechanically, pneumatically or hydraulically, electrically and / or electronically controlled driven.
  • the term "rope" is used as a hoist for lifting and also lowering loads, as a rope is the most common hoist.
  • the opening is preferably arranged in that part region of the beam cross section, which part region leaves the rope emerging from the cross-sectional interior without the provision of deflection rollers.
  • the trolley may also comprise deflection devices in the context of this invention, by means of which deflection devices the direction of extension of the rope emerging from the cross-section of the beam cross-section is defined.
  • deflecting devices arranged on the trolley, the person skilled in the art can arrange further deflecting devices on the crane according to the invention in order to achieve a desired guidance of the cable.
  • the supports may be designed to guide arranged on the trolley rolling bearings, roller bearings, plain bearings, caterpillars or Umlaufskymaschinelzlagern.
  • the supports may also be a non-contact bearing as part of a magnetic drive.
  • the rollers of the rolling bearings, the rollers of the roller bearings or the sliding surfaces of the plain bearings can according to the prior art have any shape and are to be dimensioned according to the common teaching.
  • the rollers and rollers may in particular be conical, cylindrical, with a be formed concave or a convex tread.
  • the rollers, rollers or sliding surfaces had a sufficiently large width, so that the Auflagergägheitsachse always cuts the tread or the sliding surfaces.
  • the expert selects the width of the tread or the sliding surfaces sufficiently wide, so as to be able to compensate for tolerances in the area of the support can.
  • the latter is a dimensioning task to be carried out by a person skilled in the art, in which the person skilled in the art also takes into account the safe absorption of the forces in the support and the safe transmission of the forces in the support.
  • An axis of inertia is defined with reference to the common teaching as that line through a cross section, along which Line no torsional moment load caused by the force when loaded on the cross section by a force whose force application point is on the line and which force is oriented parallel to the axis of inertia becomes.
  • the force F is formed by the weight of the trolley and by acting on the trolley payloads.
  • the force F may be a static force or a dynamic force.
  • This invention also includes that portions or the entire area of the beam are formed as truss members.
  • the entire beam is formed as a truss bearer.
  • the formation of the beam of the crane according to the invention as truss bearer creates a weight saving.
  • This weight saving of about 40% compared to similar cranes of the prior art is due in particular to the low overall height of the crane according to the invention.
  • box girder It can also be part of the beam formed as a box girder.
  • box girder is generally heavier than a truss girder (with the same span and load).
  • the trolley may be mounted on the beam in areas adjacent the open beam cross-sectional portion by means of further supports suitable for further transmission of torsional forces between the beam and the trolley.
  • the other supports are to be formed according to the prior art, that these forces, in particular tensile forces and compressive forces from torsional forces between beam cross section and trolley can be transmitted.
  • the further supports may have a plurality of rollers, revolving rolling elements or tracks, which are arranged on opposite surfaces of a rail for transmitting tensile forces or compressive forces between rollers and rail.
  • the beam cross-section and trolley act as a stable static or dynamic element with regard to the absorption of torsional forces.
  • the trolley is considered to be very stiff because the trolley includes the hoist and the drive. It is hinged here in comparison to the trolley softer closed cross-section of the stiffer trolley.
  • the beam preferably has construction elements in its pressure area, which extend over highly loaded pressure areas of the beam.
  • the problem of buckling of several interconnected construction elements at the joint is thus eliminated.
  • the joint can represent a weak point according to standard teaching.
  • FIG. 1 to FIG. 4 show sketches of embodiments of cross sections of a crane according to the invention.
  • FIG. 5 and FIG. 6 show construction drawings of another embodiment of the crane according to the invention.
  • FIG. 1 shows a schematic diagram of an embodiment of a beam cross-section of a beam 1 for a crane according to the invention.
  • the crane comprises the beam 1, a trolley 3 arranged in the beam cross-section 2, which comprises a cable drum 4 and a cable winch drive 5 for unwinding and rolling up a cable 6.
  • the rope 6 is in FIG. 1 down (Seilabroll issued 7) unrolled.
  • the beam cross-section 2 is formed by a cross-connection 18 (also referred to as the upper belt according to the current teaching) and webs 19 attached to the cross-connection 18. At the in FIG. 1 embodiment shown, the webs 19 are attached to the ends of the cross-bond 18.
  • the cross-connection 18 and the webs 19 form a U-shaped or C-shaped, closed beam cross-sectional portion 9.
  • the beam cross-section 2 has an open beam cross-sectional portion 8 with an opening 15.
  • the rope extending in Seilabrollides 7 6 intersects the beam cross-section in the region of the opening 15th
  • the closed beam cross-sectional portion 9 extends opposite to the opening 15.
  • the trolley 3 is mounted on the closed beam cross-section portion 9 by means of supports 10.
  • the supports 10 are in the corner between the cross-connection 18 and the respective web 19th arranged.
  • the trolley 3 is located in the beam cross-section 2 as close as possible to the cross-connection 18, to ensure a recording of forces from the trolley in the cross-bond 18 while minimizing a distance between the trolley 3 and cross-connection 18. This arrangement avoids cutting moment forces.
  • the support 10 has a Trolagergägheitsachse 27, which Auflagergägheitsachse 27 - in the plane of the sectional image of the FIG. 1 is congruent with the axis of inertia 28 of those parts of the closed beam cross-section, which parts adjoin the support 10.
  • the expert recognizes that in the in FIG. 1 illustrated embodiment, the Materialslagergägheitsachse 27 must be arranged congruent only with the axis of inertia 28 of the web 19 to prevent the occurrence of cutting torque forces in the contact area between the bearing 10 and the web 19.
  • the web 19 receives the vertical forces F.
  • the force F generated because of the congruent arrangement of Auflagergägheitsachse 27 and the axis of inertia 28 of the web 19 no moment in the webs 19th
  • the force F does not generate a bending moment in the cross-connection 18.
  • the vertical force F is absorbed by the webs 19 in the main.
  • the trolley 3 is disposed within the beam cross-section 2 and below the cross-connection 18.
  • the height of the cross-connection 18, the web 19 and the trolley 3 results from the requirements of the crane according to the invention.
  • manufactured workpieces have manufacturing tolerances.
  • the manufacturing tolerance of the tolerance angle 20 of the right web 19 is exemplified.
  • Such a manufacturing tolerance causes a moment load M, as in FIG. 1 shown schematically.
  • the inventive arrangement of the support 10 in the closed cross-sectional area 9, in particular in the corner between cross-compound 18 and web 19 can - as one skilled in the art - the influence of the tolerance angle 20 and the resulting torque load can be minimized. Because of the arrangement of the support 10 in the closed cross-sectional portion 9 a very small mechanical lever is formed.
  • the webs 19 absorb the bending force caused by the force F.
  • the beam 1 undergoes a bending around the zero bending line 17, forming a pressure zone 13 and a tensile zone 14.
  • the maximum absorbable force F with respect to the bend is predetermined by the permissible tensile strength of the material of the web 19.
  • the invention discussed here is characterized by the basic idea of keeping the load on the beam cross-section 2 as small as possible by arranging the elements.
  • FIG. 2 shows a sketch of another embodiment of the crane according to the invention.
  • the crane in turn comprises a beam 1 comprising a beam cross section 2 and a trolley 3.
  • the trolley 3 in turn comprises a cable drum 4 and a cable winch drive 5 for unrolling and rolling up a rope 6.
  • the trolley 3 is in turn disposed within the beam cross-section 2 and as close to the upper beam.
  • the beam cross-section 2 has a beam cross-sectional portion 8 with an opening 15 that is open in the direction of the cable roll 7.
  • the beam cross-section 2 has a polygonal shape (closed beam cross-sectional area 9) with an opening 15 (open beam cross-sectional area).
  • the trolley 3 is mounted on the beam 1 on the closed beam cross-sectional portion 9 by means of supports 10. For easy unrolling of the rope without the use of pulleys, the closed beam cross-sectional portion 9 extends substantially opposite to the open beam cross-sectional portion 8.
  • a force F exerted on the rope 6 causes a bending moment of the beam 1 about the zero bending line 17, whereby a pressure zone 13 and a tension zone 14 are formed.
  • a force F can cause a torsion, which is absorbed over the entire beam cross section 2.
  • FIG. 2 embodiment shown corresponds substantially to the embodiment of FIG. 1 , There are also arranged laterally to the webs 19 lower chords 24, which also act statically at bending of the beam 1.
  • the shape of the lower chords 24 results from the calculation and the required width of the opening 15th
  • FIG. 3 shows a further embodiment of a beam cross-section 2 of a beam 1 for a crane according to the invention.
  • the crane further comprises a trolley 3, which in turn comprises a cable drum 4 and a cable winch drive 5 for unwinding and rolling up a cable 6.
  • the beam cross-section 2 is formed by an open beam cross-sectional portion 8 and by a closed beam cross-sectional portion 9.
  • the closed beam cross-sectional portion is formed by the webs 19, the cross-connection 18 and the box cross-section 30.
  • the open beam cross-section 8 has at least one opening 15 in that partial area, in which partial area the cable 6 crosses the open cross-sectional partial area 8.
  • the trolley 3 is mounted on the beam 1 adjacent to a closed beam cross-sectional portion 9 by means of supports 10, which closed beam cross-sectional portion 9 extends substantially opposite to the opening 15. It is thus an arrangement of the trolley 3 at least partially within the beam cross-section 2 possible.
  • the Auflagergägheitsachsen 27 of the supports 10 are in turn congruent with the axes of inertia 28 of the vertical parts of the beam cross-section, namely arranged with the axes of inertia 28 of the webs 19 and the axes of inertia 28 of the vertical parts of the beam cross-section.
  • a moment load of the webs 19 by introducing the vertical force F is avoided.
  • the tension zone 14 extends below the zero bending line 17; the pressure zone 13 extends above that of the zero bending line 17.
  • a torsional force 12 caused by an eccentricity e of the force F is absorbed exclusively by the closed cross-sectional portion 9, in particular by the box cross section 30 and the cross-connection 18.
  • Torsions manager 12 are oriented in the longitudinal axis of the beam (in FIG. 3 perpendicular to viewing plane) tensile forces and compressive forces.
  • FIG. 4 shows a cross section 2, which is similar to the cross section of FIG. 1 is, however, 19 further supports 11 at the lower ends of the webs.
  • the in FIG. 4 shown beam cross-section 2 has, with the exception of the recording caused by an eccentricity of the force F torsional force the same mode of action as the beam cross-section according to FIG. 1 ,
  • the other supports 11 allow the transfer of tensile and compressive forces between the respective lower end of the web 19 and the trolley 3.
  • the recording of the torsion was done exclusively by the cross-bond 18, now act the webs 19, cross-links 18 and the trolley 3 together with the other supports 11 in the recording of the torsional moments.
  • the webs 19 can show a pendulum motion as a result of vibrations.
  • This pendulum motion is a problem in particular for webs 19 with a large height and / or at high loads.
  • this oscillating movement of the webs 19 is prevented.
  • FIG. 5 and FIG. 6 show construction drawings of a possible embodiment of the crane according to the invention.
  • FIG. 5 shows a cross-sectional view of the beam cross-section 2 together with trolley 3;
  • FIG. 6 shows a side view and a top view of the beam 1.
  • the beam is designed as a truss bearer.
  • the design of the beam as truss bearer here allows an optimization of the ratio of dead weight to the possible force absorption under static and / or dynamic load.
  • the beam cross section 2 in FIG. 5 is similar to the one in FIG. 1 constructed bar cross section constructed.
  • the beam cross-section 2 comprises a cross-section 18 extending in a horizontal plane and webs 19 attached to the cross-connection 18.
  • the cross-connections 18 and the web 19 form a c-shaped cross-section which extends in FIG. 5 downwardly has an open cross-sectional portion 8 with an opening 15.
  • the closed cross-sectional portion 9 is formed by the cross-members 18 and the webs 19, which form a downwardly open C-beam cross-section.
  • At the in FIG. 5 and FIG. 6 illustrated embodiment are cross-compound 18 and the respective web 19 exclusively connected to the support 10.
  • the open cross-sectional portion 8 is located in that portion of the beam cross-section, which the in the interior of the beam cross-section 2 extending cable (in FIG. 5 not shown).
  • the open cross-sectional portion 8 is located below, so that the rope (in FIG. 5 not shown) can be unrolled with hook and hook bottle without deflections to lower the hook.
  • the trolley 3 is arranged in the interior of the beam cross-section 2. Only a portion of the hook protrudes from the interior of the beam cross-section 2 out.
  • the beam cross-section 2 is characterized by its low height.
  • the trolley 3 is mounted on supports 10 on the beam cross-section 2, so that the force F is introduced from the trolley 3 in the support 10.
  • the supports 10 are arranged in the region of the closed cross-sectional sub-region 9, in more detail in the respective corner region of the transverse joint 18 and the web 19.
  • the supports 10 comprise a rail arranged between the cross-member 18 and web 19, which is part of the truss beam as a beam 1, and rollers 22.
  • the rollers 22 are mounted on the trolley 3 by means of axles, wherein FIG. 5 only one of the two rollers 22 is shown.
  • the supports 10 are arranged symmetrically to the support axis 29.
  • the Auflagergägheitsachse 27 and the inertia axis 28 of the web 10 connected to the support 10 are arranged congruently.
  • the web 19 connected to the support 10 is to be regarded as that part of the closed beam cross-sectional part region 9, which part adjoins the support 10. Due to the arrangement of supports 10 to the respective web 19 with respect to the axes of inertia and the introduction of the force F in the region of the axes of inertia, a force moment between support 10 and the respective web 19 is prevented.
  • FIG. 5 visible bridge 19 becomes - as in FIG. 6 shown above - formed by vertical diagonal struts 23 and by a lower flange 24.
  • the cross-bond 18 is formed by horizontal diagonal struts 25 and cross struts 26.
  • the rail 21 is arranged between web 19 and cross-connection 18, so that the cross-connection 18 and the respective web 19 are connected exclusively via the rail 21 acting as a support 10.
  • the rail 21 is formed as a U-profile, which U-profile for receiving the rollers 22 in the direction of trolley 3 has its open profile.
  • the beam 1 is thus designed as truss bearer.
  • the beam 1 has in its pressure region 13, the rail 21 as a structural element, which extend over highly loaded pressure areas 13 of the beam 1. The problem of buckling struts in a knot is thus eliminated.
  • the rail 21 allows movement of the trolley 3 in the extension direction of the beam. 1
  • the Biegenullline 17 always runs below the rail 21, so that the rail 21 in the pressure area 13 and the webs 19 are located in the tension area 14.
  • the Biegenullline 17 preferably extends in the region 30, namely below the bearing acting as a rail 21 and the in FIG. 5 unregistered axis of inertia of the lower flange 24.
  • the acceleration force 33 is registered according to a movement of the beam 2. Again, these forces can be taken while avoiding momentary forces by the support and the cross-connection 18 consisting of diagonal struts 25 and cross struts 26, since these are arranged in close proximity to the support 10 acting as a rail.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
EP15166807.6A 2014-05-08 2015-05-07 Grue Withdrawn EP2942317A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM195/2014U AT14013U3 (de) 2014-05-08 2014-05-08 Kran
ATA341/2014A AT515717B1 (de) 2014-05-08 2014-05-08 Kran

Publications (1)

Publication Number Publication Date
EP2942317A1 true EP2942317A1 (fr) 2015-11-11

Family

ID=53040469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15166807.6A Withdrawn EP2942317A1 (fr) 2014-05-08 2015-05-07 Grue

Country Status (1)

Country Link
EP (1) EP2942317A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202020101369U1 (de) 2020-03-12 2020-03-27 NEQ CRANES GmbH Balkenkran aus einem Holzwerkstoff

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE359438C (de) 1918-03-16 1922-09-22 Ag Deutsche Maschf Kran, dessen Laufkatze ein starres Haengegeruest fuer das Lastorgan traegt
DE1032497B (de) 1952-11-08 1958-06-19 Ferrand & Frantz S A R L Laufkran mit nach unten offenem, kastenartigem Brueckentraeger
FR1183879A (fr) * 1957-10-04 1959-07-15 Ferrand & Frantz Perfectionnements apportés aux ponts-roulants
DE1084887B (de) 1956-05-15 1960-07-07 Inst Foerdertechnik Kranbruecke in Schalenbauweise
FR1264688A (fr) * 1960-05-14 1961-06-23 Grange Et Denis Soc Pont roulant bi-poutre
GB1008983A (en) * 1964-10-03 1965-11-03 John Barnsley & Sons Ltd Girders constituting or supporting rails
US3319802A (en) * 1964-10-22 1967-05-16 Ishikawajima Harima Heavy Ind Single crane girder
DE1906212A1 (de) 1969-02-07 1971-02-11 Tax Hans Containerverladekran
DE2000128A1 (de) 1970-01-02 1971-07-08 Fritz Kellermann Zweitraeger-Gelenklaufkran
DE2009663A1 (de) 1970-03-02 1971-09-23 Pohlig Heckel Bleichert Brückenträger
DE2106291A1 (de) 1970-02-13 1972-01-13 Richier Fa Turmkran
DE2555316A1 (de) 1974-12-12 1976-06-16 Pieter Meeusen Be- und entladeeinrichtungen fuer container von schiffen
DE3043506A1 (de) 1980-11-18 1982-06-03 Wiener Brückenbau- und Eisenkonstruktions-AG, Wien Kranbruecke
DE3731245A1 (de) 1987-09-17 1989-03-30 Man Ghh Krantechnik Kastentraeger fuer zweitraeger-brueckenkrane
EP0339015A2 (fr) 1988-04-18 1989-10-25 Hans Dr. Jonke Construction de grue avec système de transbordement à voie unique pour le transport de marchandises
US7341159B2 (en) 2005-08-23 2008-03-11 Roger Gail Nelson Safety system for preventing falls
CN201932818U (zh) 2010-12-30 2011-08-17 徐州徐工铁路装备有限公司 孔梁式箱梁起重机
CN203173705U (zh) 2013-03-14 2013-09-04 云南力神重工机械有限公司 一种电动葫芦双梁桥式起重机

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE359438C (de) 1918-03-16 1922-09-22 Ag Deutsche Maschf Kran, dessen Laufkatze ein starres Haengegeruest fuer das Lastorgan traegt
DE1032497B (de) 1952-11-08 1958-06-19 Ferrand & Frantz S A R L Laufkran mit nach unten offenem, kastenartigem Brueckentraeger
DE1084887B (de) 1956-05-15 1960-07-07 Inst Foerdertechnik Kranbruecke in Schalenbauweise
FR1183879A (fr) * 1957-10-04 1959-07-15 Ferrand & Frantz Perfectionnements apportés aux ponts-roulants
FR1264688A (fr) * 1960-05-14 1961-06-23 Grange Et Denis Soc Pont roulant bi-poutre
GB1008983A (en) * 1964-10-03 1965-11-03 John Barnsley & Sons Ltd Girders constituting or supporting rails
US3319802A (en) * 1964-10-22 1967-05-16 Ishikawajima Harima Heavy Ind Single crane girder
DE1906212A1 (de) 1969-02-07 1971-02-11 Tax Hans Containerverladekran
DE2000128A1 (de) 1970-01-02 1971-07-08 Fritz Kellermann Zweitraeger-Gelenklaufkran
DE2106291A1 (de) 1970-02-13 1972-01-13 Richier Fa Turmkran
DE2009663A1 (de) 1970-03-02 1971-09-23 Pohlig Heckel Bleichert Brückenträger
DE2555316A1 (de) 1974-12-12 1976-06-16 Pieter Meeusen Be- und entladeeinrichtungen fuer container von schiffen
DE3043506A1 (de) 1980-11-18 1982-06-03 Wiener Brückenbau- und Eisenkonstruktions-AG, Wien Kranbruecke
DE3731245A1 (de) 1987-09-17 1989-03-30 Man Ghh Krantechnik Kastentraeger fuer zweitraeger-brueckenkrane
EP0339015A2 (fr) 1988-04-18 1989-10-25 Hans Dr. Jonke Construction de grue avec système de transbordement à voie unique pour le transport de marchandises
US7341159B2 (en) 2005-08-23 2008-03-11 Roger Gail Nelson Safety system for preventing falls
CN201932818U (zh) 2010-12-30 2011-08-17 徐州徐工铁路装备有限公司 孔梁式箱梁起重机
CN203173705U (zh) 2013-03-14 2013-09-04 云南力神重工机械有限公司 一种电动葫芦双梁桥式起重机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202020101369U1 (de) 2020-03-12 2020-03-27 NEQ CRANES GmbH Balkenkran aus einem Holzwerkstoff

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