EP3253707B1 - Kran, insbesondere brückenkran oder portalkran, mit mindestens einem kranträger - Google Patents

Kran, insbesondere brückenkran oder portalkran, mit mindestens einem kranträger Download PDF

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Publication number
EP3253707B1
EP3253707B1 EP16703154.1A EP16703154A EP3253707B1 EP 3253707 B1 EP3253707 B1 EP 3253707B1 EP 16703154 A EP16703154 A EP 16703154A EP 3253707 B1 EP3253707 B1 EP 3253707B1
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EP
European Patent Office
Prior art keywords
crane
struts
girder
strut
longitudinal direction
Prior art date
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Active
Application number
EP16703154.1A
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German (de)
English (en)
French (fr)
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EP3253707A1 (de
Inventor
Christoph Passmann
Richard KREISNER
Thomas SCHLIERBACH-KNOBLOCH
Stefan Noll
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Konecranes Global Oy
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Konecranes Global Oy
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Publication of EP3253707A1 publication Critical patent/EP3253707A1/de
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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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/005—Girders or columns that are rollable, collapsible or otherwise adjustable in length or height
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
    • E04C3/09—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders at least partly of bent or otherwise deformed strip- or sheet-like material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0495—Truss like structures composed of separate truss elements the truss elements being located in several non-parallel surfaces

Definitions

  • the invention relates to a crane, in particular a gantry crane or gantry crane, with at least one horizontally extending crane girder designed as a truss with several struts, on which a crane trolley can be moved with a hoist, at least some of the struts being flat and the flat struts each one have a flat main surface, each extending transversely to a longitudinal direction of the crane girder.
  • Such a crane is from the German published application DE 10 2012 102 808 A1 known.
  • the struts are arranged in pairs in the manner of a gable roof and a vertically extending post is provided between the struts of each pair of struts.
  • An upper chord and a lower chord of the crane girder are connected to each other via the struts and the posts.
  • the struts for stiffening have bevelled long sides. Due to the bevels of the long sides, secondary surfaces are formed between lower first and upper second recesses, which adjoin the main surfaces as so-called buckling stiffeners, are bent at approximately a right angle with respect to the main surfaces and point transversely to the longitudinal direction of the crane girder.
  • struts are generally considered to be those load-bearing elements of a truss structure that have an oblique or diagonal course. This distinguishes the struts of a truss structure from the load-bearing elements, which run exclusively vertically and are called posts.
  • the sheet-like struts or surface struts preferably absorb forces in the direction of their longitudinal axis and thus in the plane of extension of their flat main surface.
  • such surface elements or surface structures are referred to as disks, whereas surface elements loaded perpendicularly to their extension plane or main surface are referred to as plates.
  • Panels and thus the existing surface struts differ, for example, from bars or rod-shaped posts and struts in that their thickness dimensions are significantly smaller than the length and width dimensions determining the planar extent of the disk. Accordingly, flat struts are also called surface struts or disc struts.
  • a bridge crane is known with a crane girder designed as a truss, which has rod-shaped struts in a pair-wise X-shaped arrangement.
  • the DE 32 22 307 A1 discloses a bridge girder designed as a truss girder, the flat struts of which are arranged in pairs in an X-shape.
  • the invention has for its object to provide a corresponding crane, in particular overhead crane or gantry crane, with at least one improved crane girder.
  • the at least one crane girder is advantageously improved in that at least a first strut and a second strut form a pair of struts and are arranged in an X shape relative to one another transversely to the longitudinal direction of the crane girder ,
  • the crane girders improved in this way are characterized in particular by the fact that no posts have to be used to ensure the required stability of the crane girder. As a result, the number of parts can be reduced and material can be saved. At the same time, the torsional rigidity compared to the increase known truss crane girders. The risk of bulging of the flat struts and individual crane girder areas can also be reduced by the X-shaped arrangement of the crossing struts.
  • each pair of struts each have a cutout in one of their long sides and the two struts are plugged together over the two cutouts.
  • a simple manufacture of the crane is achieved in that the two struts of each pair of struts are welded together in the area of the cutouts.
  • the recesses in the struts of each pair of struts are designed such that the mutually associated longitudinal sides of the X-shaped struts are arranged flush. As a result, a particularly uniform and thus secure mutual support of the two struts of each pair of struts is achieved.
  • the recesses extend from the respective longitudinal side in the direction of a longitudinal axis of the strut, preferably extend in a rectangular shape, in particular up to the longitudinal axis, and are preferably arranged in the region of half the strut length.
  • a first recess and a second recess are provided in the main surfaces on each longitudinal side of the struts and that the longitudinal sides of at least some of the sheet-like struts are designed without bends, at least between the first and second recesses. This can further reduce the manufacturing effort. Due to the preferably round recesses, the main surface is constricted transversely to the longitudinal axis, as a result of which the struts in each of these areas form a type of membrane joint and produce an optimized flow of force through the strut.
  • the long sides are formed without bends over their entire length. This allows the manufacturing effort to be reduced even further.
  • a first recess and a second recess are provided in the main surfaces and at least one of the long sides of the struts of a pair of struts is folded between a crossover region of the struts and the recesses and one is in contact with the Main surface adjoining beveled secondary surface, which preferably points transversely to the longitudinal direction of the crane girder. Due to the preferably round recesses, the main surface is constricted transversely to the longitudinal axis, as a result of which the struts in each of these areas form a type of membrane joint and produce an optimized flow of force through the strut.
  • the combination of the X-shaped arrangement of struts with diaphragm joints and additional side areas as buckling stiffeners improve the load-bearing capacity and torsional rigidity of the crane girder, particularly with large crane girder heights, and additionally reduce the risk of bulging individual crane girder areas.
  • each long side between the intersection area and the recesses is folded and has a bevelled secondary surface adjoining the main surface.
  • a bridge or gantry crane which is particularly advantageous in terms of construction and production technology is achieved in that the crane girder comprises at least one upper girder extending in a straight line in its longitudinal direction and at least one lower girder arranged parallel thereto, the upper girder and the lower girder being arranged over several along the longitudinal direction of the crane girder Struts are interconnected.
  • the crane comprises two crane girders arranged in parallel and at a distance from one another.
  • the Figure 1 shows a crane 1 designed as a single-girder bridge crane.
  • the crane 1 comprises a crane girder 2 designed as a lattice girder, which is aligned horizontally and extends with a length L in its longitudinal direction LR.
  • the crane girder 2 of the crane 1 forms, with its first and second undercarriages 7, 8 fastened at its opposite ends, a crane bridge which is essentially double T-shaped in plan view.
  • the crane 1 can be moved on the rails 7, 8 in a horizontal direction of travel F transversely to the longitudinal direction LR of the crane girder 2 on rails, not shown.
  • the rails are usually arranged high against a floor and can for this purpose, for example, be mounted on a suitable supporting structure or attached to building walls located opposite one another.
  • the first undercarriage 7 is driven by a first electric motor 7a and the second undercarriage 8 by a second electric motor 8a.
  • a crane trolley 9 is suspended from the crane girder 2 with a hoist designed as a cable pull, which can be moved transversely to the direction of travel F of the crane 1 and along the longitudinal direction LR of the crane girder 2 by means of trolleys (not shown).
  • the crane trolley 9 can be moved along and on laterally protruding running surfaces 4c of a lower flange 4 of the crane girder 2.
  • the crane 1 also includes a crane control 10 and a suspension control switch 11 connected to it, by means of which the crane 1 or the electric motors 7a, 8a and the crane trolley 9 can be controlled and operated separately from one another with the cable pull.
  • a load suspension device of the cable pull arranged on the crane trolley 9 can be lowered or raised.
  • the Figure 2 shows a perspective view of a section of a crane girder 2 according to the invention for the crane 1 according to the Figure 1 ,
  • the truss structure of the crane girder 2 essentially comprises an upper chord 3, a lower chord 4 and a plurality of struts 5 running diagonally therebetween, via which the upper chord 3 is firmly connected to the lower chord 4.
  • the struts 5 are flat and bend-free and, viewed transversely to the longitudinal direction LR of the crane girder 2, are arranged in pairs in an X-shape.
  • the X-shaped arrangement of the Struts 5 and the structure of the struts 5 are explained in detail below.
  • the truss construction of the crane girder 2 is completed at the opposite ends of the upper chord 3 and the lower chord 4 via an end piece 6 (see Figure 1 ).
  • the upper flange 3 and the lower flange 4 are connected to a frame via these end pieces 6.
  • the trolleys 7, 8 are attached to the end pieces 6.
  • the upper flange 3 and the lower flange 4 each extend in a straight line, parallel and spaced apart in the longitudinal direction LR of the crane girder 2 between the trolleys 7, 8.
  • the upper flange 3 and the lower flange 4 are vertically spaced apart.
  • the upper chord 3 is composed of two first and second upper chord profiles 3d, 3e arranged in a horizontal plane and horizontally spaced apart.
  • the two upper chord profiles 3d, 3e are each formed by an L or angled profile carrier with a leg 3a oriented vertically downward and a horizontal flange 3f arranged at right angles thereto.
  • the flanges 3f of the upper flange profiles 3d, 3e preferably lie in a horizontal plane with an upper end face of the struts 5.
  • the lower flange is formed by two lower flange profiles 4d, 4e.
  • the downward legs 3a of the upper flange 3 and the upward legs 4a of the lower flange 4 face each other.
  • a width B of the crane girder 2 also results from the distance between the outermost edges of the upper chord 3 or the lower chord 4, as seen in the longitudinal direction LR (see Figure 3 ).
  • the lower flange 4 can also be formed by a one-piece flat profile 4b with two vertically standing legs 4a and a horizontal flange 4f connecting the legs 4a, so that there is approximately a U-shaped cross section.
  • the flange 4f of the flat profile 4b is extended laterally beyond the legs 4a (see also Figure 3 ).
  • the opposite ends of the flange 4f of the flat profile 4b each form a running surface 4c for trolleys of the crane trolley 9.
  • the upper chord 3 can in principle also be formed by a corresponding flat profile 3b.
  • each X-shaped strut pair is provided, each comprising a first strut 5h and a second strut 5i.
  • the each Pairwise X-shaped arrangement of struts 5 seen in the longitudinal direction LR is repeated until the opposite end in the form of the other end piece 6 of the crane girder 2 is reached.
  • a pair of struts is arranged between the two ends of the crane girder 2.
  • the first strut 5h of this strut pair is welded to the upper flange 3 in a first upper node OK1 and the second strut 5i is welded to the lower flange 4 in a first lower node UK1. Accordingly, the first strut 5h runs diagonally down to a second lower node UK2 on the lower flange 4 and the second strut 5i runs diagonally up to a second upper node OK2 on the upper flange 3.
  • the two struts 5h and 5i of each pair of struts each have a slot-shaped recess 5g (see Figure 4 ) on.
  • the two struts 5h and 5i are plugged together via the cutouts 5g, forming an intersection area KB.
  • the struts 5h and 5i can not only be plugged together, but can also be welded to one another by weld seams S running along the two recesses 5g in the intersection area KB.
  • Each strut 5 is inclined at an angle of attack ⁇ with respect to an imaginary vertical auxiliary plane which runs at right angles to the upper chord 3 and lower chord 4 which extend in the longitudinal direction LR.
  • the angle of attack ⁇ is enclosed by the flat main surface 5a of the respective strut 5 and the auxiliary plane.
  • the angle of attack ⁇ is shown between the main surface 5a and an auxiliary line HL which lies in the auxiliary plane.
  • the angle of attack ⁇ is preferably in a range from 35 ° to 55 ° and is particularly preferably 45 °.
  • the angle of attack ⁇ is preferably determined before assembly, so that an even number of struts 5, each with the same length and at the same angle of attack ⁇ , are used and all struts 5 can be arranged in an X-shaped manner.
  • the X-shaped arrangement of the struts 5 results in a correspondingly large one Number of upper nodes OK and lower nodes UK (see Figure 1 ), whereby the upper chord 3 or lower chord 4 serving as a rail for the crane trolley 9 is reinforced against deflection and bulging and the crane girder 2 is stiffened and stabilized overall. In this way, it is also possible to dispense with the use of vertical posts for support between the upper flange 3 and the lower flange 4 in addition to the struts 5.
  • the struts 5 are aligned within the framework structure of the crane girder 2 such that their main surface 5a extends transversely to the longitudinal direction LR of the crane girder 2.
  • the struts 5 are arranged with their lower first strut ends 5e between the two legs 4a of the lower flange 4 pointing vertically upward.
  • the struts 5 are arranged between the two legs 3a of the upper chord 3 pointing vertically downward.
  • the upper flange 3 lies with the inner sides of its legs 3a and the lower flange 4 with the inner sides of its legs 4a on longitudinal sides 5b of the struts 5 which run parallel to this.
  • the struts 5 are welded to the legs 3a, 4a along weld seams S formed there only in the region of their corresponding longitudinal sides 5b (see Figure 3 ). Seen transversely to the longitudinal direction LR of the crane girder 2, only one strut 5 is therefore always provided between the legs 3a, 4a of the upper chord 3 or lower chord 4.
  • the Figure 3 shows a cross-sectional view of the crane girder 2 according to FIG Figure 2 , whose section runs vertically and transversely to the longitudinal direction LR between two adjacent pairs of struts. Accordingly, in the Figure 3 a view of the intersection area KB based on Figure 2 described strut pair shown. The upper half of the first strut 5h and the lower half of the second strut 5i of the pair of struts, which are constructed identically to the first strut 5h, are shown, as a result of which the basic structure of all the flat struts 5 becomes clear.
  • the struts 5 are designed as a sheet metal profile with an elongated shape and a main surface 5a with an essentially rectangular cross section.
  • the struts 5 are preferably produced by laser cutting from a steel sheet which forms the main surface 5a.
  • the main surface 5a is essentially delimited by longitudinal sides 5b running parallel to the longitudinal axis LA and extends along the longitudinal axis LA of the strut 5.
  • the main surface 5a of the strut 5 extends with a strut width SB over at least half the width B of the crane girder 2 transversely to the longitudinal direction LR of the crane girder 2.
  • the width B corresponds here the distance of the outermost points of the lower flange 4 as seen in the longitudinal direction LR or - as in the case in FIG Figure 3 shown crane girder 2 - the upper chord 3, in particular the flanges 3f, 4f directed outwards from the longitudinal axis LA.
  • a lower first recess 5c and an upper second recess 5d are provided on both longitudinal sides 5b of the struts 5.
  • the recesses 5c, 5d create a constriction of the main surface 5a transversely to the longitudinal axis LA in the area of each strut end 5e, 5f, as a result of which the struts 5 each form a type of membrane joint in these areas.
  • the first and second recesses 5c, 5d are round, preferably in the form of a circular arc, and with regard to the fastening of the struts 5 to the upper flange 3 and the lower flange 4 of the crane girder 2, the force flow through the welded in the region of the strut ends 5e and 5f Struts 5 optimized and the welds S there or the associated weld outlets are relieved.
  • the recesses 5c, 5d are preferably outside the legs 3a, 4a, but adjoin them.
  • the slot-like recesses 5g of the two struts 5h and 5i are covered and therefore not shown.
  • the design of the recesses 5g is shown below using the Figure 4 described.
  • the cutouts 5g in the struts 5h and 5i of each pair of struts are designed in particular in such a way that the struts 5h and 5i which are plugged together and arranged in an X-shape can be arranged flush with their mutually associated longitudinal sides 5b.
  • the recesses 5g of the two struts 5h and 5i each extend from the corresponding longitudinal side 5b at right angles to the longitudinal side 5b with a recess length AL approximately to the longitudinal axis LA.
  • the struts 5h and 5i must be positioned such that the cutouts 5g are in each case opposite longitudinal sides 5b of the struts 5h and 5i are arranged.
  • a weld seam S runs along the two recess lengths AL over the entire strut width SB.
  • the struts 5h and 5i are preferably welded, seen in the longitudinal direction LR, on both sides of the crossing region KB.
  • each recess 5g is arranged on one of the two longitudinal sides 5b in the center, that is to say in the region of half the strut length, with respect to the entire strut length.
  • the recesses 5g are arranged eccentrically with respect to the entire strut length and, accordingly, the intersection area KB is not arranged halfway up the X-shaped strut pair.
  • rectangular-shaped slots can be provided on the lower first strut end 5e and / or the upper second strut end 5f in the main surface 5a so that the struts 5 can be welded to the upper flange 3 or lower flange 4 on the legs 3a or 4a réellestecken. It is also conceivable that the two legs 3a or the two legs 4a are not spaced equally far apart and then accordingly the longitudinal sides 5b in the region of the strut ends 5e, 5f are spaced differently apart from one another in order to rest against the legs 3a and 4a and being able to be welded to it.
  • FIG 4 is a view of a strut 5 of the crane girder 2 according to Figure 2 , In particular, the position of the recess 5g in the main surface 5a which is central with respect to the entire strut length is shown.
  • the recess 5g extends, starting from one of the two longitudinal sides 5b, essentially in a rectangular shape and with a recess width AB up to the longitudinal axis LA.
  • the recess width AB corresponds at least to the sheet metal thickness of the main surface 5a of the struts 5, in order to be able to accommodate these when they are plugged together to form a pair of struts.
  • the long sides 5b are formed over their entire length and thus over the entire length of the strut without bends. Accordingly, the long sides 5b and the main surface 5a lie in a common plane spanned by the main surface 5a, and bends of the long sides 5b to form what are known as buckling stiffeners are not provided.
  • FIG Figure 5 A perspective view of a pair of struts with such struts 5 is shown in FIG Figure 5 shown.
  • the long sides 5b of the struts 5 are bent or bent approximately at right angles to the main surface 5a.
  • the secondary surfaces 5j formed in this way and adjoining the main surfaces 5a point transversely to the longitudinal direction LR of the crane girder 2.
  • the struts 5 can have an L, U or Z-shaped cross section when viewed in the direction of their longitudinal axis LA.
  • the struts 5 on their longitudinal sides 5b have, in addition to the first and second recesses 5c and 5d, further identically designed third recesses 5k and fourth recesses 5l, each in pairs on each longitudinal side 5b between the secondary surface 5j and the intersection area KB are arranged. Accordingly, the struts 5 would each have four secondary surfaces 5j and additionally two third recesses 5k and two fourth recesses 5l, which in the same way as the recesses 5c, 5d form additional membrane joints.
  • the struts 5 run freely between the upper flange 3 and the lower flange 4 and do not support one another, as in the X-shaped arrangement.
  • the struts 5 then differ from the embodiment used for the X-shaped strut pairs in that they are mirror-symmetrical with respect to their longitudinal axis LA and in this case have no cutouts 5g.
  • the membrane joints described above are always provided both in the case of struts 5 which are free of bends and also provided with secondary surfaces.
  • a plurality of vertically extending posts are provided alongside the struts 5 for support
  • the longitudinal direction LR of the crane girder 2 are arranged between individual struts 5 or pairs of struts and also firmly connect the upper chord 3 and the lower chord 4 to one another.
  • the posts are preferably of a flat design analogous to the struts 5 and welded to the upper flange 3 and the lower flange 4. With small total strut lengths of struts 5, support via posts is not necessary.
  • the crane 1 can of course not only be designed as a single-girder crane, but also as a two-girder crane, which then accordingly comprises two crane girders 2 according to the invention, at the ends of which, in turn, trolleys 7, 8 are fastened, so that seen in plan view, a frame is formed.
  • the crane trolley 9 is not necessarily suspended from the lower chords 4 of the crane girder 2, but can also run on the upper chords 3 of the two crane girders 2. Accordingly, the crane trolley 9 arranged centrally between crane girders 2 can be moved along the longitudinal direction LR of the crane girders 2 and between the two crane girders 2.
  • the load suspension device of the cable pull arranged on the crane trolley 9 can be lowered or raised between the two crane girders 2.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
  • Jib Cranes (AREA)
EP16703154.1A 2015-02-06 2016-02-05 Kran, insbesondere brückenkran oder portalkran, mit mindestens einem kranträger Active EP3253707B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015101755.5A DE102015101755A1 (de) 2015-02-06 2015-02-06 Kran, insbesondere Brückenkran oder Portalkran, mit mindestens einem Kranträger
PCT/EP2016/052566 WO2016124773A1 (de) 2015-02-06 2016-02-05 Kran, insbesondere brückenkran oder portalkran, mit mindestens einem kranträger

Publications (2)

Publication Number Publication Date
EP3253707A1 EP3253707A1 (de) 2017-12-13
EP3253707B1 true EP3253707B1 (de) 2019-12-25

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Application Number Title Priority Date Filing Date
EP16703154.1A Active EP3253707B1 (de) 2015-02-06 2016-02-05 Kran, insbesondere brückenkran oder portalkran, mit mindestens einem kranträger

Country Status (5)

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US (1) US10604383B2 (zh)
EP (1) EP3253707B1 (zh)
CN (1) CN108025894B (zh)
DE (1) DE102015101755A1 (zh)
WO (1) WO2016124773A1 (zh)

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US10981726B2 (en) * 2017-12-04 2021-04-20 Tiffin Scenic Studios, Inc. Truss with positioning system
DE102019126399A1 (de) * 2019-09-30 2021-04-01 Konecranes Global Corp. Träger für eine Laufkatze und flurfreie Transporteinrichtung mit einem solchen Träger

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CN108025894B (zh) 2020-12-08
WO2016124773A1 (de) 2016-08-11
CN108025894A (zh) 2018-05-11
US10604383B2 (en) 2020-03-31
EP3253707A1 (de) 2017-12-13
US20180022582A1 (en) 2018-01-25
DE102015101755A1 (de) 2016-08-11

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