EP4038008B1 - Support pour un chariot, et dispositif de transport suspendu comprenant un tel support - Google Patents

Support pour un chariot, et dispositif de transport suspendu comprenant un tel support Download PDF

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Publication number
EP4038008B1
EP4038008B1 EP20781467.4A EP20781467A EP4038008B1 EP 4038008 B1 EP4038008 B1 EP 4038008B1 EP 20781467 A EP20781467 A EP 20781467A EP 4038008 B1 EP4038008 B1 EP 4038008B1
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EP
European Patent Office
Prior art keywords
struts
girder
trolley
chord
braces
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.)
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EP20781467.4A
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German (de)
English (en)
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EP4038008C0 (fr
EP4038008A1 (fr
Inventor
Christoph Passmann
Bastian Wiehagen
Marian Witte
Sven Müller
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Konecranes Global Oy
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Konecranes Global Oy
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Publication of EP4038008C0 publication Critical patent/EP4038008C0/fr
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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
    • B66C7/00—Runways, tracks or trackways for trolleys or cranes
    • B66C7/02—Runways, tracks or trackways for trolleys or cranes for underhung trolleys or cranes
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B3/00—Elevated railway systems with suspended vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C7/00—Runways, tracks or trackways for trolleys or cranes
    • B66C7/02—Runways, tracks or trackways for trolleys or cranes for underhung trolleys or cranes
    • B66C7/04—Trackway suspension

Definitions

  • the invention relates to a carrier for a trolley according to the preamble of claim 1 and to an overhead transport device with such a carrier according to claim 9.
  • VETTER Krantechnik GmbH has developed a crane girder designed as a box girder, with flat struts formed on the longitudinal box girder walls between the upper chord and the lower chord.
  • the struts are created by making triangular openings in the respective box girder wall, which are spaced apart from one another in the longitudinal direction of the girder. This leaves a diagonal section of the box girder wall between two adjacent triangular openings, which forms one of the struts. This corresponds to the features of the preamble of claim 1.
  • a profile rail is arranged below the lower chord as a support for a trolley.
  • a crane girder which is designed as a lattice girder with an upper chord, a lower chord and struts connecting them.
  • the struts are flat and each have a main surface extending transversely to a longitudinal axis of the crane girder.
  • the struts are arranged one behind the other in the direction of the longitudinal axis and are detachably attached to the upper chord and the lower chord.
  • Another crane girder with similarly arranged flat struts is known from EN 10 2015 101 755 A1 known.
  • JP S54 15980 U JP S62 22529 U , US 4 102 108 A , NL 278 615 A and US 2 024 001 A known.
  • the invention is based on the object of providing an improved generic carrier and an overhead transport device, which can each be produced particularly economically.
  • a generic carrier for a trolley with a running surface formed on the carrier for the trolley or its wheels carried by a trolley undercarriage, an upper chord, a lower chord and struts connecting them to one another, wherein the struts are flat and each have a main surface which faces away from the carrier along the longitudinal side between the upper chord and the lower chord, wherein two of the struts each form a pair of struts and are arranged next to one another in the direction of a longitudinal axis of the carrier, preferably on the outside on opposite longitudinal sides of the carrier, can be produced particularly economically in that the flat struts are detachably fastened to the upper chord and/or the lower chord.
  • planar struts are detachably connected to the upper chord and/or lower chord, with the upper chord and/or lower chord preferably extending parallel to one another and in particular horizontally.
  • each strut has at least two fastening ends, one of which is fastened to the upper chord and one to the lower chord.
  • a screw connection is preferably provided between the respective strut and the upper chord or lower chord, with each screw connection also being able to have more than one screw.
  • two or more screws are also conceivable at the respective fastening end.
  • two screws can be provided for struts with only two fastening ends and for the four-legged struts with four fastening ends described in more detail below, and four screws can be provided for the two-legged struts with three fastening ends described in more detail below.
  • the detachable fastening of the flat strut(s) advantageously allows a modular construction of the beam, since the straps and struts as well as the connecting elements for producing the detachable fastening can be prefabricated as individual components of the beam and can be transported to the site of use in a space-saving and thus simple and cost-effective manner before assembly, for example in a standardized or normed freight container. The entire assembly of the beam can therefore be moved to the place of use. Compared to beams with conventional, non-detachable connections between the struts and the respective belt, this makes it particularly easy to assemble the beam at the place of use and avoids comparatively expensive factory production and complex transport. In this context, both the laborious production of welded joints and the cutting of struts from an initially closed box girder wall can be avoided.
  • the following aspects also increase the cost-effectiveness of manufacturing the generic beam in a particularly advantageous way.
  • the length of the beam can be adapted particularly flexibly to the respective application and the required span by simply cutting the straps to the appropriate length and releasably attaching the struts to the desired longitudinal position. This applies both to the initial assembly and to subsequent adjustments if requirements change.
  • the upper or lower strap of the beam can also be made up of several parts, so that the desired total length is achieved by connecting several strap segments, whereby the individual strap segments can have standardized lengths. Both the same and different distances between the struts along the longitudinal axis of the beam are possible.
  • such a carrier is used in combination with a trolley in order to produce an overhead transport device described in more detail below.
  • a transport device enables, in particular, transport of loads suspended from the trolley in a trolley travel direction that is defined by the running surface extending in the longitudinal direction of the carrier.
  • struts are considered to be those elements of the beam designed as a lattice girder which have an oblique or diagonal course between the upper chord and the lower chord in relation to the longitudinal axis of the beam.
  • struts are considered to be those elements of the beam whose legs have an oblique or diagonal course between the upper chord and the lower chord in relation to the longitudinal axis of the beam. This distinguishes the struts from elements that run exclusively vertically and are referred to as posts in the context of half-timbered structures.
  • the struts or surface struts preferably absorb forces in the direction of their longitudinal axis and thus in the extension plane of their preferably flat main surface.
  • Such surface elements or surface structures are referred to in technical mechanics as disks, whereas surface elements loaded perpendicular to their extension plane or main surface are referred to as plates.
  • Disks and thus also the surface struts according to the invention differ from rods or rod-shaped posts and struts, for example, in that their thickness dimensions are significantly smaller than the length and width dimensions that determine the surface extension of the disk.
  • the main surface of the surface-shaped strut has significantly larger dimensions than its material thickness. Accordingly, surface-shaped struts can also be referred to as surface struts or disk struts.
  • the main surface here means the area portion or surface portion of the respective strut whose normal vectors point away from the beam along the long side.
  • the extent of the main surface pointing away from the beam along the long side is much larger, particularly in terms of its length and width, than the depth measured transversely to the longitudinal axis of the beam and the dimensions measured transversely to the longitudinal axis of the beam of possible secondary surfaces on the long sides of the strut, described in more detail below.
  • the main surface of the respective strut extends, preferably completely, outside the longitudinal axis of the beam and at least partially or completely parallel to the longitudinal axis of the beam.
  • the main surface therefore has an external wall-like orientation.
  • the main surface can point away from the longitudinal axis at right angles and completely horizontally, as is the case with the at least partially bevel-free variant described in more detail below and with the variant with at least one secondary surface adjacent to the main surface.
  • the main surface can also point obliquely away from the longitudinal axis in sections in the area of the depression of the main surface forming the bead, in particular with differently oblique sections.
  • the main surfaces pointing away from the beam on the long side are each oriented in such a way that they point away on the long side transversely to the longitudinal axis of the running surface for the trolley formed on the beam.
  • the main surface can be assigned to one of the two long sides between the upper chord and lower chord and extend at right angles to the running surface formed on the beam and/or any crane track or the travel plane of the trolley and/or any crane undercarriages defined thereby. In a beam installed in the above sense, this corresponds to a vertical extension of the main surface. Areas of the optional beads can deviate from the right-angled or vertical extension.
  • struts are identically designed and detachably attached to the upper chord and/or lower chord. It is also possible for all struts to be identical or for all of the embodiments described below or just a selection thereof to be installed on the same beam. A combination of different embodiments may be necessary, for example, to ensure that the forces occurring during operation in an overhead transport device are dissipated in all areas of the beam, regardless of their distance from a crane chassis.
  • the upper chord - apart from its length - is identical for all variants of the struts and thus of the beam, in particular with regard to its cross-section.
  • This also applies to the lower chord.
  • the lengths of the upper chord and lower chord can also differ from one another.
  • the lower chord can be longer than the upper chord and in particular also longer than the longitudinal extension of the bracing formed by the struts, so that the lower chord can protrude beyond the bracing and the upper chord on both sides in the direction of its longitudinal ends.
  • the The optional crane trolleys described can be arranged and secured.
  • the beam can thus be easily adapted to different applications, in particular required spans and desired load ranges, by using different struts with the same upper and/or lower chord cross-section.
  • the modular design described above advantageously enables economies of scale when manufacturing the beam.
  • the struts can be made from an aluminum or steel material or from a composite material.
  • the struts can also be manufactured by punching, laser cutting, forming or as cast parts.
  • the upper chord and/or lower chord can also be made from an aluminum material.
  • the beam can be manufactured as a lightweight beam, which further increases the weight savings already achieved through its lattice construction.
  • a receiving groove with a C-shaped cross-section can be provided on the upper chord and/or lower chord, preferably on the outside on a long side of the respective chord, in order to be able to receive an element for producing the detachable fastening of the struts, preferably at least one such element per fastening end.
  • an element for producing the detachable fastening of the struts preferably at least one such element per fastening end.
  • two or more such elements can also be provided for producing the detachable fastening at the respective fastening end.
  • the element received by the receiving groove in the manner of a slot nut can be, for example, a nut or a screw head.
  • Two legs delimiting the opening of the receiving groove form an undercut through which the element introduced from one longitudinal end of the respective belt can be supported to create the detachable fastening of the strut within the receiving groove on the respective belt or the associated legs.
  • the C-shaped receiving groove provides for The detachable fastening of the strut to the respective belt does not require any holes in the belt.
  • the fastening position in particular the screw position, can be freely selected. The effort required to determine the fastening position in advance, for example by creating a drilling pattern in the respective belt, can be omitted.
  • the fastening position for the struts at the desired longitudinal position can be freely selected using the receiving groove, which is designed in particular as a longitudinal groove.
  • a receiving groove or longitudinal groove with a C-shaped cross-section is provided on two opposite long sides of the upper belt and/or lower belt.
  • the receiving grooves on the long side of the beam are arranged one above the other in the direction of extension of the struts and the longitudinal grooves of the upper belt or lower belt are each open in the horizontal direction and are preferably mirror-symmetrical and in particular at the same height.
  • the upper chord can be designed as a conventional construction profile, in particular in the form of a double groove profile with two C-shaped grooves in the above sense and opposite each other on the long side, and as such can be manufactured from an aluminum material, for example by means of an extrusion process. It can also be manufactured from a steel material.
  • two of the struts form a pair of struts and are arranged next to each other in the direction of the longitudinal axis of the beam, preferably on the outside on opposite long sides of the beam.
  • several pairs of struts are arranged along the longitudinal axis.
  • the main surfaces of the two struts of the respective pair of struts point longitudinally, i.e. from the respective opposite long sides, in particular in opposite directions, away from the beam. It can be provided that the struts rest on the outside of the respective long side on the upper chord and/or lower chord.
  • the struts arranged in pairs are arranged symmetrically on the opposite long sides with respect to the longitudinal axis of the beam, wherein the struts of one long side, in particular with their main surfaces, can extend parallel to the struts of the other long side, in particular their main surfaces.
  • the orientation of the main surfaces is therefore preferably the same on each long side.
  • the struts of the respective pair of struts are preferably mounted with the same orientation, so they have the same inclination relative to the longitudinal axis of the beam.
  • the inclination can, viewed in the direction of the longitudinal axis, either increase from the lower chord towards the upper chord or decrease from the upper chord towards the lower chord.
  • struts with an increasing inclination and struts with a decreasing inclination alternate in the longitudinal direction of the beam, with the struts located at the longitudinal ends of the strut and thus pointing towards the longitudinal ends of the beam preferably being inclined downwards from the upper chord to the lower chord in the direction of the respective longitudinal end.
  • a strut in the form of inverted "V"s arranged next to one another on each long side.
  • the struts in the form of a single, inverted "V" on the respective long side can abut directly against one another with their fastening ends on the lower chord or, preferably, be spaced apart from one another at an equal distance, which results from the respective requirements. This also applies to the distances between adjacent struts or their fastening ends on the upper chord.
  • At least one of the struts is designed to be bevel-free at least on its long sides.
  • Bevel-free in this context means that the edges of the respective strut extend at least on the long sides, in particular in their free area extending outside the upper chord and lower chord, exclusively in a plane spanned by the respective main surface.
  • the entire strut it is also possible for the entire strut to be completely bevel-free in this sense, i.e. to extend exclusively in the plane spanned by the main surface without its edge being bent relative to the main surface or the plane spanned by it. In other words, the entire strut is formed by the flat main surface.
  • Such a bevel-free design advantageously enables the strut to be manufactured in a particularly simple manner in terms of production technology as a flat part with the desired strut contour, for example by punching or laser cutting.
  • the edges on the long sides of such bevel-free struts can also have a constricted, preferably biconcave, course between their fastening ends and the strut can thus be bent along its Longitudinal extension in relation to its main surface initially tapers and then widens again. This also applies to the legs of the two-leg struts described in more detail below.
  • a design of the struts without bending in this sense does not exclude the possibility of a bead being provided in the main surface, as described in more detail below.
  • At least one of the struts has a secondary surface on at least one of its long sides, in particular in its free area of the strut between the upper chord and the lower chord, which adjoins the main surface and extends transversely thereto.
  • the respective secondary surface increases the stiffness, in particular buckling stiffness, of the strut.
  • the respective long side or the edge of the strut there is preferably bent over relative to the main surface, preferably folded over.
  • the secondary surface(s) are therefore each arranged between the main surface and the edge delimiting the respective long side.
  • the respective strut has an L-, U- or Z-shaped cross section at least in the free area between and outside the upper chord and lower chord.
  • the respective secondary surface preferably extends in the direction of the longitudinal axis, i.e. inwards.
  • a Z-shaped cross section one secondary surface extends inwards and one secondary surface extends outwards.
  • the main surface of the strut which is thereby delimited on the longitudinal side, is delimited in a straight line, for example by a correspondingly straight bending line or bevel between the secondary surface and the associated longitudinal edge.
  • the associated boundary of the main surface preferably runs parallel to the other bevel-free longitudinal edge.
  • the main surface of at least one of the struts has a bead.
  • the respective bead increases the stiffness, in particular the buckling stiffness, of the strut.
  • the bead which is designed as a depression in the main surface, is preferably arranged between the long sides of the strut in such a way that a preferably flat section of the main surface extending parallel to the longitudinal axis of the support. If the strut has a bead, the edges of the strut are preferably bevel-free on their long sides and preferably run parallel to one another between their fastening ends and preferably in a straight line.
  • the bead preferably runs with its longitudinal extension parallel to this and in particular centered in relation to the central longitudinal axis of the main surface of the respective strut.
  • the depression of the main surface provided for forming the bead is directed outwards, i.e. away from the longitudinal axis of the support.
  • At least one of the struts is designed with multiple legs, preferably two legs or four legs.
  • the main surface and its edges on each leg of the corresponding strut are preferably designed and oriented in the same way.
  • the multi-leg struts form a fastening end of the strut with each of their legs, with which the strut is attached to the respective belt.
  • Multi-leg struts therefore have at least three fastening ends, whereas the alternative single-leg struts only have two fastening ends in the form of their longitudinal ends.
  • the multi-leg strut or the arrangement of the associated legs is preferably mirror-symmetrical.
  • the strut is also preferably designed as a single piece and in particular without a welded connection between the legs and can therefore be manufactured in a simple manner as described above.
  • the two legs In the case of the two-leg strut, the two legs converge in a connecting area of the strut on the upper chord, whereby the connecting area also serves as one of a total of three fastening ends of the two-leg strut. Accordingly, the legs or their fastening ends arranged on the lower chord are spaced apart from one another in the longitudinal direction of the beam. This results in a bracing in the shape of an inverted "V" on the respective long side of the beam, similar to the one shown above. described arrangement of struts with only two attachment ends. While such an arrangement requires two separate struts for each inverted "V" in the example above, a single two-leg strut can be used for a bracing of comparable shape.
  • an x-shaped or H-shaped design of the strut is preferred, which thus results in an x-shaped or H-shaped bracing on the respective long side of the beam.
  • the four legs of the strut also converge in a connection area, which is not arranged on the upper chord, but outside of it in a free area of the strut between the upper chord and the lower chord. Due to the x- or H-shaped shape, the four-leg struts each have four fastening ends, two of which are attached to the upper chord at a distance from one another in the longitudinal direction of the beam, and two of which are attached to the lower chord at a distance from one another in the longitudinal direction of the beam.
  • a leg with an increasing inclination is preferably followed by a leg with a decreasing inclination when viewed in the longitudinal direction of the beam.
  • the multi-leg struts can abut directly against one another along the longitudinal direction of the beam or be spaced apart from one another, which depends on the respective requirements.
  • At least one pair of multi-leg struts are arranged at the opposite longitudinal ends of the beam's bracing and struts with only two fastening ends, one for the upper chord and one for the lower chord, are arranged between them.
  • a four-legged strut or a pair of struts can also be provided, for example halfway along the length of the beam to mark the longitudinal center of the beam.
  • Several or exclusively multi-legged, in particular two-legged or four-legged, struts can also be installed on a beam, in particular as pairs of struts in the above sense.
  • struts with a main surface pointing away from the support along the longitudinal side can be combined with bevel-free struts and struts with secondary surfaces, and these can each be designed with or without a bead.
  • These variants can also be designed with only two fastening ends or as a multi-leg strut.
  • At least one friction-increasing contact surface can be provided on the support according to the invention between at least one of the struts and the upper chord and/or between at least one of the struts and the lower chord.
  • the friction-increasing contact surface creates a friction-increasing micro-form fit between the components to be connected, i.e. the respective strut and the respective belt, through its surface structure.
  • the surface structure of the friction-increasing contact surface differs from the surface structure of the respective component outside the contact surface.
  • the friction-increasing contact surface has the function of increasing the friction value between the connected components within the connection created for detachable fastening in order to enable a higher force transmission with otherwise identical connecting elements, for example the screw connection.
  • a separate element can be introduced to increase the coefficient of friction, in which a friction-increasing contact surface is formed on opposite sides, one of which then rests on one of the two components to be connected within the connection and there, through its friction-increasing surface structure, causes a friction-increasing micro-form fit.
  • the surface structure of the friction-increasing contact surfaces differs from the surface structure of the respective contacted component.
  • the element for increasing the coefficient of friction can in particular be part of the detachable fastening between the strut and the respective belt and, in the case of a screw connection, be part of this, for example within the receiving groove described above or outside it at the receiving groove limiting legs of the respective belt. This makes it easy to increase the coefficient of friction at the desired position without having to change the surface structure of the strut or the belt itself.
  • the friction-increasing element can be designed, for example, as a plate, disk or fleece with a different surface than the strut or belt and thus increasing the friction value, for example a grooved surface.
  • the element can also be used in connection with the butt joint of successive belt segments, in particular profile rails used for this purpose. If the detachable fastening between the strut and the upper belt and/or lower belt comprises a screw connection, the element can be integrated into this screw connection and screwed together with the aforementioned components, for which purpose it then has at least one hole for the screw(s) of the respective screw connection to pass through.
  • the running surface is arranged in an interior space enclosed by the lower chord in order to be able to accommodate an internally running trolley undercarriage and the associated wheels of the trolley, for which purpose the lower chord preferably has a C-shaped cross-section and on whose legs delimiting an opening of the interior space the running surface is arranged.
  • the running surface can be formed by the legs themselves that delimit the opening of the interior. In the installation position of the carrier in a floor-free transport direction according to this application, the opening points downwards.
  • the legs and thus also the running surface and the travel plane of the trolley defined by them preferably extend horizontally in the installation position.
  • the trolley protrudes from its inner trolley chassis through the opening from the lower chord or the interior space enclosed by it. This allows the trolley to be connected to the load to be transported, which is arranged outside the lower chord, with or without the use of a hoist. Since the opening extends in a slot-like manner parallel to the longitudinal axis of the beam due to the C-shaped cross section, the trolley can be The trolley running inside and its wheels arranged inside the vehicle are moved on the running surface along the opening and thus in the trolley travel direction.
  • the lower flange of the support according to the invention is preferably designed as a profile rail with a corresponding C-shaped cross-section and an interior space delimited by this for accommodating the internal trolley undercarriage. If only such a profile rail with a C-shaped cross-section was previously used as a support for a trolley, such a profile rail now advantageously becomes part of a support for a trolley that is designed as a lattice girder.
  • the upper flange and the bracing formed by the struts form a lattice-like reinforcement structure for the profile rail with a C-shaped cross-section that now serves as the lower flange and is conventional in itself, and which can also be used on its own as a support for a trolley.
  • an existing conventional profile rail in particular a profile rail for a trolley, can be used for the support according to the invention is advantageous because this profile rail can now be used for larger spans and larger load-bearing ranges thanks to the lattice-like reinforcement structure produced according to the invention. This applies in particular to profile rails that are made from an aluminum material.
  • the advantages of the carrier according to the invention are particularly evident when an overhead transport device for loads is provided with such a carrier and a trolley that can be moved along the running surface of the carrier.
  • the transport device is preferably designed as a monorail or as a crane, preferably a suspended crane.
  • the beam In such overhead transport systems, the beam, together with the trolley attached to it, is suspended from a steel structure or an upper structure, such as roof trusses or building ceilings.
  • a steel structure or an upper structure such as roof trusses or building ceilings.
  • the floor-free transport device is used for the linear transport of loads suspended from the trolley in the trolley travel direction.
  • a hoist that moves at the same time as the trolley can also be attached to the trolley of the overhead conveyor, for example a chain hoist or cable hoist, by means of which the loads can be raised and lowered.
  • the transport device can also be designed as a crane.
  • the carrier itself can be moved together with the trolley carrying the hoist along a crane track in a crane travel direction transverse to its longitudinal axis and, in the case of a suspended crane, suspended from this.
  • the carrier can be moved transversely, in particular at right angles, to its longitudinal axis defining the trolley travel direction along a crane track defining the crane travel direction, which is also suspended in the case of a suspended crane.
  • a crane undercarriage with associated wheels is arranged in the area of its opposite longitudinal ends.
  • the beam is suspended from the crane runway using the crane undercarriages.
  • the two crane undercarriages and the undercarriage of the trolley are each designed as an internal running undercarriage.
  • two spaced-apart profile rails with a C-shaped cross-section can be used, the legs of which on their inside each serve as a running surface for the crane undercarriages and delimit an opening in the interior of the profile rail.
  • the crane undercarriages accommodated in the interior together with their wheels are connected to the beam through the opening in order to suspend the beam from the crane runway. Due to the C-shaped cross-section, the opening of the respective crane runway profile rail also extends in a gap-like manner and parallel to the longitudinal axis of the profile rail or the direction of crane travel.
  • the suspension crane can therefore have a total of three identical profile rails to form the crane runway and the lower chord of its support, whereby the profile rails are at least identical in that they all have a C-shaped cross-section to accommodate the internal trolley or crane undercarriages and to form the running surfaces for them.
  • the profile rails can also be identical in terms of their cross-section and length.
  • the profile rails provided for forming the crane runway can also each be provided in the form of a beam according to the invention, in which the profile rail then forms the bottom chord of the beam designed as a lattice girder and is reinforced by the lattice-like reinforcement structure.
  • a two-girder variant is also possible, in which two girders according to the invention are provided for the trolley.
  • the trolley then has two or more, preferably four trolley carriages, of which at least one, preferably the same number, is assigned to one of the two girders.
  • the two girders extend parallel to each other and spaced apart from each other. This also applies to the running surfaces of the crane runway.
  • four profile rails that are identical in the above sense and in particular four identical girders according to the invention, each with such a profile rail as the bottom flange, can then be used.
  • Cranes with even more identically constructed profile rails or girders according to the invention are also conceivable, for example if the crane runway has to be formed by more than just two profile rails or girders in the case of large spans and corresponding girder lengths.
  • a wired control switch for controlling the hoist motor of the hoist is usually suspended from the trolley on a control line hanging down from the hoist and is connected to its control system via the control line to transmit signals.
  • the power supply to at least the hoist can be via an electrical conductor line arranged in the interior of the lower belt, for which the trolley has corresponding current collectors, or a trailing line.
  • motorized trolley and crane undercarriages are also conceivable, which can then be controlled by an operator, for example, via the control switch hanging on the control line.
  • the power supply for this can also be provided by means of a conductor line or a trailing line, for example.
  • a wireless control switch which then accordingly creates a wireless signal-transmitting connection with the Control for the hoist or the respective undercarriage can be established, for example by radio. If no motorized undercarriages that can also be controlled via the control switch are used when a wireless control switch is used, a corresponding power transmission element can be provided for manual movement in the trolley travel direction and/or crane travel direction, via which the corresponding drive forces can be applied by the operator, for example in the form of a rope, rod or chain connected to the trolley in a force-transmitting manner.
  • the Figure 1 shows a perspective view of a crane 1 designed as a single-girder suspension crane with a girder 2 according to the invention in a first exemplary embodiment.
  • the girder 2 designed as a lattice girder comprises as essential components an upper girder 3, a lower girder 4 and struts 5 connecting them to one another.
  • the lower girder 4 is longer than the upper girder 3 and in particular also longer than the longitudinal extension of the bracing formed by the struts 5.
  • the lower girder 4 which determines the total length of the girder 2, protrudes beyond the bracing on both sides in the direction of its longitudinal ends.
  • a trolley 6 is arranged on the support 2, which carries a hoist 6c designed as a chain hoist, for example, and can be moved via wheels 6b of its trolley chassis 6a on a running surface of the support 2 in a horizontal trolley travel direction X.
  • the trolley travel direction X is defined by the running surface for the trolley 6, which extends on the support 2 in its longitudinal direction, i.e. parallel to its longitudinal axis.
  • the running surface for the trolley 6 is arranged in an interior space enclosed by the lower chord 4, in which the inner trolley undercarriage 6a and the wheels 6b of the trolley 6 are accommodated.
  • the lower chord 4 in the present example has a C-shaped cross-section, on whose legs, which delimit an opening of the interior, the running surface is arranged.
  • the beam 2 is also suspended in the region of its longitudinal ends on two spaced-apart profile rails 10, each with a C-shaped cross-section, which define a crane runway of the crane 1.
  • the beam 2 is suspended via crane carriages 7, 8 attached in the region of the longitudinal ends of the beam 2, which are each partially accommodated, in particular with their wheels (not shown), in an interior space enclosed by the associated profile rail 10 and are connected to the beam 2 through an opening delimited by the legs of the respective profile rail 10.
  • the profile rails 10 are also suspended from an upper structure via rail suspensions (not shown) and are arranged parallel to one another, for example.
  • the lower flange 4 of the beam 2 is formed by a profile rail 10 with the aforementioned features of the crane runway profile rails 10, so that the crane 1 has a total of three identical profile rails 10.
  • the lower flange 4 is formed by two flange segments 4b or correspondingly long profile rail segments, which in the area of their butt joint 11 meet and are fastened to one another in alignment in the longitudinal direction of the beam 2.
  • the upper chord 3 can also be designed in this way in several parts and made up of several chord segments.
  • the lower chord 4 is longer than the upper chord 3 and the longitudinal extension of the bracing formed by the struts 5.
  • the lower chord 4 protrudes on both sides in the direction of its longitudinal ends beyond the bracing and the upper chord 4.
  • the crane carriages 7, 8 are arranged and fastened to the longitudinal ends, which are thus free of upper chords and struts.
  • FIG. 1 a control switch 9 is shown, which is connected via a control line 9a to the trolley 6 and in particular to the hoist 6c for the purpose of controlling at least the lifting motor of the hoist 6c.
  • the Figure 1 further shows a paired arrangement of struts 5 along the longitudinal axis of the support 2, wherein the struts 5 of the pairs of struts are arranged in such a way that along each longitudinal side there is an alternating rising and falling inclination of the struts 5 or the associated legs 5d (see also Figures 3a and 3b ).
  • the braces 5 are each connected to at least one of their fastening ends 5f (see for example Figures 2a and 2b and 3a and 3b) are detachably attached to the upper chord 3 and with another of their fastening ends 5f to the lower chord 4.
  • the detachable fastening is carried out, for example, via a screw connection at each fastening end 5f.
  • a receiving groove 3a, 4a (see for example Figures 2a to 3b ) with a C-shaped cross-section is provided in order to be able to accommodate at least one element for producing the detachable fastening of the struts 5, for example the nut(s) of the respective screw connection, at each fastening end 5f.
  • all struts 5 of the beam 2 are designed completely without bending in the above sense.
  • the main surfaces 5a of the struts 5 therefore point longitudinally and horizontally away from the beam between the upper chord and the lower chord and extend in particular vertically to the running surface and crane track.
  • the longitudinal Edges of the struts 5 have a biconcave shape and thus the main surface 5a has a constricted shape on both sides, whereby the struts 5 or legs 5d initially taper along their longitudinal extent starting from the respective fastening end 5f and then widen again in the direction of the opposite fastening end 5f.
  • the struts 5 of the support 2 differ from Figure 1 however, so that a total of two variants of the struts 5 are installed on the carrier 2.
  • the design of the first variant of the struts 5 from Figure 1 is also in the detailed views of the Figures 2a and 2b
  • the design of the second variant of the struts 5 from Figure 1 is also in the detailed views of the Figures 3a and 3b shown.
  • the struts 5 according to the first variant each have only two fastening ends 5f in the form of their opposite longitudinal ends, one of which is fastened to the upper chord 3 and one to the lower chord 4,
  • the struts 5 according to the second variant are designed with two legs and thus multiple legs.
  • the two legs 5d thus formed for each strut 5 converge in a connecting area 5e of the strut 5 on the upper chord 3, with the connecting area 5e simultaneously forming one of the three fastening ends 5f in total of this variant. Accordingly, the legs 5d or their fastening ends 5f arranged on the lower chord 4 are spaced apart from one another in the longitudinal direction of the beam 2.
  • each fastening end 5f is fastened to the upper chord 3 or lower chord 4 with a screw connection comprising two screws 12.
  • each of the three fastening ends 5f is fastened to the upper chord 3 or lower chord 4 with a screw connection comprising four screws 12.
  • two pairs of two-legged struts 5 are arranged at each of the opposite longitudinal ends of the bracing of the beam 2, and between them pairs of struts whose struts 5 have only two fastening ends 5f.
  • the detailed views of the Figures 3a and 3b the two-leg struts 5 show one of the two longitudinal ends.
  • Other combinations and arrangements of the strut variants described are also conceivable.
  • FIGS. 4a and 4b show detailed views of a second embodiment of an alternative carrier 2 according to the invention for the crane 1 according to Figure 1
  • the struts 5 as well as those in the Figures 2a and 2b shown variant, only two fastening ends 5f each.
  • a significant special feature of the struts 5 according to the second embodiment is that they have a secondary surface 5b on each of their long sides, which adjoins the main surface 5a, to increase the buckling resistance.
  • the secondary surfaces 5b each extend transversely to the main surface 5a inwards in the direction of the longitudinal axis of the beam 2.
  • the struts have a U-shaped cross section.
  • the Figures 5a and 5b show detailed views of a third embodiment of an alternative carrier 2 according to the invention for the crane 1 according to Figure 1 .
  • the struts 5 of this embodiment differ from the struts 5 of the second embodiment according to the Figures 4a and 4b essentially in that all struts 5 of the support 2 are designed completely without bends in the above sense, i.e. in particular no secondary surfaces 5b are provided on their long sides. Instead, to increase the buckling resistance, the main surface 5a of each strut 5 has a bead 5c.
  • the bead 5c designed as a recess in the respective main surface 5a is arranged between the long sides of the strut 5 in such a way that a flat section of the main surface 5a extending parallel to the longitudinal axis of the support 2 is located between the two edges delimiting the long sides and the bead 5c.
  • the bead 5c also runs with its longitudinal extension parallel and centered in relation to the central longitudinal axis of the main surface 5a of the respective strut 5.
  • the recess of the Main surface 5a is oriented outwards as an example.
  • the Figures 6a and 6b show detailed views of a fourth embodiment of an alternative carrier 2 according to the invention for the crane 1 according to Figure 1 .
  • the struts 5 of this embodiment differ from the struts 5 of the second and third embodiment according to the Figures 4a to 5b essentially in that all struts 5 of the support 2 are designed completely without bends in the above sense, i.e. no secondary surfaces 5b are provided, and also no beads 5c are provided.
  • Another difference is that the struts 5 according to the fourth embodiment are designed with multiple legs. In contrast to the two-leg struts 5 from the Figures 1 , 3a and 3b , the struts 5 of the fourth embodiment are, however, designed with four legs.
  • each strut 5 converge in a connecting area 5e which, however, unlike the two-leg variant, is not arranged on the upper flange 3 but in the free area of the strut 5 between the upper flange 3 and the lower flange 4. This results in an x-shaped or H-shaped design of these struts 5.
  • the four-leg struts 5 also have main surfaces 5a on their legs 5d which are particularly similar due to symmetry.
  • the four-leg struts each have four fastening ends 5f, two of which are fastened to the upper flange 3 at a distance from one another in the longitudinal direction of the support 2 and two of which are fastened to the lower flange 4 at a distance from one another in the longitudinal direction of the support 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)

Claims (9)

  1. Support (2) destiné à un chariot (6), ledit support comprenant une surface de roulement formée sur le support (2) et destinée au chariot (6), une membrure supérieure (3), une membrure inférieure (4) et des entretoises (5) reliant celles-ci les unes aux autres, les entretoises (5) étant de forme plate et comportant chacune une surface principale (5a) qui est orientée longitudinalement à l'opposé du support (2) entre la membrure supérieure (3) et la membrure inférieure (4), deux des entretoises (5) formant une paire d'entretoises et étant disposées l'une à côté de l'autre, de préférence à l'extérieur sur des côtés longitudinaux opposés du support (2), par référence à la direction d'un axe longitudinal du support (2), caractérisé en ce que les entretoises (5) de forme plate sont fixées de manière amovible à la membrure supérieure (3) et/ou à la membrure inférieure (4).
  2. Support (2) selon la revendication 1, caractérisé en ce qu'une rainure de réception (3a, 4a) en forme de C en coupe transversale est prévue sur la membrure supérieure (3) et/ou sur la membrure inférieure (4), de préférence à l'extérieur, sur un côté longitudinal de la membrure respective, afin de pouvoir recevoir un élément destiné à réaliser la fixation amovible des entretoises (5).
  3. Support (2) selon l'une des revendications précédentes, caractérisé en ce qu'au moins une des entretoises (5) est conçue sans chanfrein au moins sur ses côtés longitudinaux (5e).
  4. Support (2) selon l'une des revendications précédentes, caractérisé en ce qu'au moins une des entretoises (5) comporte sur au moins un de ses côtés longitudinaux une surface secondaire (5b) qui se raccorde à la surface principale (5a) et qui s'étend transversalement à celle-ci.
  5. Support (2) selon l'une des revendications précédentes, caractérisé en ce que la surface principale (5a) d'au moins une des entretoises (5) comporte une moulure (5c).
  6. Support (2) selon l'une des revendications précédentes, caractérisé en ce qu'au moins une des entretoises (5a) est conçue avec plusieurs branches, de préférence deux branches ou quatre branches, la surface principale (5a) de l'entretoise (5a) étant de préférence conçue de la même manière sur chaque branche.
  7. Support (2) selon l'une des revendications précédentes, caractérisé en ce qu'au moins une surface de contact augmentant la valeur de friction est prévue entre au moins une des entretoises (5) et la membrure supérieure (3) et/ou entre au moins une des entretoises (5) et la membrure inférieure (4).
  8. Support (2) selon l'une des revendications précédentes, caractérisé en ce que la surface de roulement est disposée dans un espace intérieur délimité par la membrure inférieure (4) afin de pouvoir recevoir un mécanisme de roulement intérieur (6a) du chariot (6), ce pour quoi la membrure inférieur (4) a une forme de C en coupe transversale et la surface de roulement est disposée sur ladite membrure inférieure sur des branches délimitant une ouverture de l'espace intérieur.
  9. Dispositif de transport sans appui au sol comprenant un support (2) selon l'une des revendications précédentes et un chariot (6) déplaçable sur la surface de roulement le long du support (2), le dispositif de transport étant de préférence réalisé sous la forme d'un rail suspendu ou d'une grue, de préférence d'une grue suspendue.
EP20781467.4A 2019-09-30 2020-09-25 Support pour un chariot, et dispositif de transport suspendu comprenant un tel support Active EP4038008B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019126399.9A DE102019126399A1 (de) 2019-09-30 2019-09-30 Träger für eine Laufkatze und flurfreie Transporteinrichtung mit einem solchen Träger
PCT/EP2020/076847 WO2021063810A1 (fr) 2019-09-30 2020-09-25 Support pour un chariot, et dispositif de transport suspendu comprenant un tel support

Publications (3)

Publication Number Publication Date
EP4038008A1 EP4038008A1 (fr) 2022-08-10
EP4038008B1 true EP4038008B1 (fr) 2024-05-01
EP4038008C0 EP4038008C0 (fr) 2024-05-01

Family

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EP20781467.4A Active EP4038008B1 (fr) 2019-09-30 2020-09-25 Support pour un chariot, et dispositif de transport suspendu comprenant un tel support

Country Status (6)

Country Link
US (1) US20220332547A1 (fr)
EP (1) EP4038008B1 (fr)
CN (1) CN114555510A (fr)
DE (1) DE102019126399A1 (fr)
PL (1) PL4038008T3 (fr)
WO (1) WO2021063810A1 (fr)

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Also Published As

Publication number Publication date
CN114555510A (zh) 2022-05-27
PL4038008T3 (pl) 2024-07-15
EP4038008C0 (fr) 2024-05-01
DE102019126399A1 (de) 2021-04-01
EP4038008A1 (fr) 2022-08-10
US20220332547A1 (en) 2022-10-20
WO2021063810A1 (fr) 2021-04-08

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