EP4038008A1 - Träger für eine laufkatze und flurfreie transporteinrichtung mit einem solchen träger - Google Patents
Träger für eine laufkatze und flurfreie transporteinrichtung mit einem solchen trägerInfo
- Publication number
- EP4038008A1 EP4038008A1 EP20781467.4A EP20781467A EP4038008A1 EP 4038008 A1 EP4038008 A1 EP 4038008A1 EP 20781467 A EP20781467 A EP 20781467A EP 4038008 A1 EP4038008 A1 EP 4038008A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- struts
- carrier
- trolley
- chord
- strut
- 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.)
- Granted
Links
- 239000011324 bead Substances 0.000 claims description 21
- 238000005452 bending Methods 0.000 claims description 3
- 230000032258 transport Effects 0.000 description 20
- 239000000725 suspension Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000000969 carrier Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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
- 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 an overhead transport device with such a carrier according to claim 10.
- a crane girder designed as a box girder is known from VETTER Krantechnik GmbH, on whose longitudinal box girder walls flat struts are formed between the upper chord and the lower chord.
- the struts result from the fact that triangular openings are made in the respective box girder wall, which openings are spaced from one another in the longitudinal direction of the girder.
- a diagonally running section of the box girder wall remains between two adjacent triangular openings, which in each case forms one of the struts.
- a profile rail is arranged as a carrier for a trolley.
- a crane girder is also known from WO 2015/177292 A1, which is designed as a lattice girder with an upper chord, a lower chord and struts connecting them to one another.
- the struts are flat and each have a main surface extending transversely to a longitudinal direction of the crane girder.
- the struts are releasably attached to the upper chord and the lower chord.
- the invention is based on the object of providing an improved generic carrier and an overhead transport device, each of which is particularly economical to manufacture.
- a generic carrier for a trolley with a running surface formed on the carrier for the trolley or its of Wheels carried by a trolley, an upper chord, a lower chord and struts connecting them to one another, the struts being flat and each having a main surface that points longitudinally away from the carrier between the upper chord and the lower chord are releasably attached to the upper chord and / or to the lower chord.
- planar struts are releasably connected to the upper chord and / or lower chord, 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, it being possible for each screw connection to have more than one screw.
- two or more screws are also conceivable on the respective fastening end.
- two screws can be provided in the case of struts with only two fastening ends and in the case of the four-legged struts with four fastening ends described in more detail below, and four screws in each case in the case of the two-legged struts with three fastening ends described in more detail below.
- the releasable fastening of the sheet-like strut (s) advantageously achieves a modular design of the carrier, since the straps and struts and the connecting elements for producing the releasable fastening are prefabricated as individual components of the carrier and are space-saving and therefore simple before assembly and can be transported inexpensively to the place of use, for example in a standardized or standardized freight container. The entire assembly of the carrier can thus be relocated to the place of use. Compared to carriers with conventional, non-releasable connections between the struts and the respective belt, a particularly simple assembly of the carrier at the place of use is thus possible and comparatively expensive factory production and complex transport can be avoided. In this context, it is possible to avoid welding connections that are complex to produce and the cutting free of struts from an initially closed box girder wall. The following aspects also increase the profitability of the Production of the generic carrier in a particularly advantageous manner.
- the length of the carrier can be adapted particularly flexibly to the particular application and the span required for this by simply cutting the straps to length and releasably attaching the struts to the desired longitudinal position. This applies both to the initial assembly and to a subsequent adjustment in the event of changed requirements.
- the upper chord or lower chord of the girder can also be made up of several parts, so that the desired overall length is produced by connecting several chord segments, with the individual chord segments being able to have standardized lengths. Both the same and different distances between the struts along the longitudinal axis of the carrier are possible.
- Such a carrier is preferably 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, loads suspended from the trolley to be transported in a trolley travel direction which is defined by the running surface extending in the longitudinal direction of the carrier.
- struts are in particular those elements of the girder designed as a lattice girder which have an inclined or diagonal course between the upper chord and the lower chord with respect to the longitudinal axis of the girder.
- struts are regarded as those elements of the girder whose legs have an inclined or diagonal course between the upper chord and the lower chord with respect to the longitudinal axis of the carrier. 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 plane of extension of their preferably flat main surface.
- planar struts can also be referred to as planar struts or disc struts.
- the main area here means the area portion or surface portion of the respective strut, the normal vectors of which point away from the support along the longitudinal side.
- the extent of the main surface facing away from the support is very much larger, especially in terms of its length and width, than in the depth measured transversely to the longitudinal axis of the support and the dimensions measured transversely to the longitudinal axis of the support of possible secondary surfaces, described in more detail below, on the longitudinal sides of the Strut.
- the main surface of the respective strut extends, preferably completely, outside the longitudinal axis of the carrier and at least partially or completely parallel to the longitudinal axis of the carrier.
- the main area therefore has an orientation in the manner of an outer wall.
- the main surface can point longitudinally at right angles and completely horizontally away from the longitudinal axis, as is the case with the at least partially bend-free variant described in more detail below and with the variant with at least one secondary surface adjoining the main surface.
- the main surface can also point away from the longitudinal axis in sections, in particular with differently inclined sections, in the area of the depression of the main surface forming the bead.
- the main surfaces pointing away from the carrier are each oriented in such a way that they point away from the longitudinal axis transversely to the longitudinal axis of the running surface for the trolley formed on the carrier.
- the main surface can be assigned to one of the two longitudinal sides between the upper chord and lower chord and extend at right angles with respect to the running surface formed on the carrier and / or any crane runway or the traveling plane defined by the trolley and / or any crane running gear. In the case of a carrier installed in the above sense, this corresponds to a vertical extension of the main surface. Areas of the optional beads can deviate from the rectangular or vertical extension.
- a plurality of struts are preferably designed identically and releasably 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 only a selection thereof to be installed on the same carrier. A combination of different embodiments may be necessary, for example, in order to ensure the removal of the forces occurring during operation in an overhead transport device in all areas of the girder, regardless of their distance from a crane running gear.
- the upper chord is preferably identical - apart from its length - for all variants of the struts and thus of the carrier, in particular with regard to its cross section. This also applies to the lower chord. However, it is also conceivable to use different upper chords or lower chords, in particular with different cross-sections.
- the lengths of the upper and lower chords 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 strut formed by the struts, so that the lower chord can protrude on both sides over the strut and the upper chord in the direction of its longitudinal ends.
- the optional crane trolleys which are described in more detail below, can be arranged and attached to the longitudinal ends, which are therefore free from the upper belt and strut.
- the modular construction described above advantageously enables economies of scale in the manufacture of the carrier.
- the struts can consist of one Be made of aluminum or steel material or from a composite material.
- the struts can be manufactured by means of punching, laser cutting, forming or as cast parts.
- the upper chord and / or lower chord can also be made from an aluminum material.
- the carrier can be manufactured as a lightweight carrier, which further increases the weight savings already achieved through its half-timbered construction.
- a receiving groove with a C-shaped cross-section to be provided on the upper chord and / or lower chord, preferably on the outside on a longitudinal side of the respective chord, in order to be able to accommodate an element for producing the releasable fastening of the struts , preferably at least one such element per fastening end.
- an element for producing the releasable 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 sliding block 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 a longitudinal end of the respective belt can be supported to produce the releasable fastening of the strut within the receiving groove on the respective belt or the associated legs. Due to the C-shaped receiving groove, no holes are required in the belt for the releasable attachment of the strut to the respective belt.
- the fixing position in particular the screw position, can be freely selected. The effort for establishing the fastening position in advance, for example by generating a drilling pattern in the respective belt, can be dispensed with.
- the fastening position for the struts at the desired longitudinal position can be freely selected by the receiving groove, which is in particular designed as a longitudinal groove.
- the receiving groove which is in particular designed as a longitudinal groove.
- the receiving grooves on the longitudinal side of the carrier are arranged one above the other in the direction of extent of the struts and the longitudinal grooves of the upper chord or the lower chord are open in the horizontal direction and are preferably mirror-symmetrical and in particular at the same time Height are.
- the upper chord can be designed as a conventional construction profile, in particular in the form of a double-groove profile with two receiving grooves which are c-shaped in the above sense and are longitudinally opposite, and as such can be produced from an aluminum material, for example by means of an extrusion process. Production from a steel material is also possible.
- two of the struts form a pair of struts and are arranged next to one another as seen in the direction of the longitudinal axis of the carrier, preferably on the outside on opposite longitudinal sides of the carrier.
- a plurality of strut pairs are preferably arranged along the longitudinal axis.
- the main surfaces of the two struts of the respective pair of struts point away from the carrier on the longitudinal side, that is to say from the respective opposite longitudinal sides, in particular in opposite directions. It can be provided that the struts rest on the outside of the respective longitudinal side of the upper chord and / or lower chord.
- the struts which are thus arranged in pairs, are preferably arranged symmetrically on the opposite longitudinal sides with respect to the longitudinal axis of the carrier, the struts of one longitudinal side, in particular with their main surfaces, being able to extend parallel to the struts of the other longitudinal side, in particular their main surfaces.
- the orientation of the main surfaces is therefore preferably the same on each longitudinal side.
- the struts of the respective pair of struts are preferably mounted with the same orientation, so then have the same inclination with respect to the longitudinal axis of the carrier.
- the inclination seen in the direction of the longitudinal axis, can thus either rise from the lower chord in the direction of the upper chord or fall from the upper chord in the direction of the lower chord.
- struts with increasing inclination and struts with decreasing inclination alternate in the longitudinal direction of the girder, with those located at the longitudinal ends of the strut and thus towards the longitudinal ends of the carrier pointing struts are preferably inclined sloping in the direction of the respective longitudinal end from the upper chord to the lower chord.
- At least one of the struts is designed without bending at least on its longitudinal sides. Bending-free means in this context that the edges of the respective strut extend exclusively in a plane spanned by the respective main surface, at least on the longitudinal sides, in particular in their free area extending outside the upper and lower chords. It is also possible that the entire strut is completely free of bends in this sense, that is to say extends exclusively in the plane spanned by the main surface, without its edge being bent with respect to the main surface or the plane spanned by it. In other words, the entire strut is formed here by the flat main surface.
- Such a bend-free configuration advantageously enables a particularly simple production of the strut as a flat part with the desired strut contour, for example by punching or laser cutting.
- the edges on the long sides of such bend-free struts can also have a constricted, preferably biconcave, course between their fastening ends and the strut thus initially taper and then widen again along its longitudinal extent relative to its main surface. This also applies to the legs of the two-legged struts described in more detail below.
- a design of the struts without bend in this sense does not preclude a bead, which is described in more detail below, being provided in the main surface.
- At least one of the struts on at least one of its longitudinal sides, in particular in its free area the strut between the upper chord and the lower chord has a secondary area adjoining the main area and extending transversely thereto.
- the respective secondary surface causes an increase in the rigidity, in particular buckling rigidity, of the strut.
- the respective longitudinal side or the edge of the strut located there is preferably bent over, preferably beveled, with respect to the main surface.
- the secondary surface (s) are therefore each arranged between the main surface and the edge delimiting the respective longitudinal side.
- the respective strut has an L, U or Z-shaped cross section, at least in the free area between and outside of the upper chord and lower chord.
- the respective secondary surface preferably extends in the direction of the longitudinal axis, that is to say inward.
- a secondary surface extends inward and a secondary surface extends outward.
- the main surface of the strut which is thereby delimited on the longitudinal side, is delimited in a straight line, for example by a corresponding straight bending line or bevel between the secondary surface and the associated longitudinal edge. If only one secondary surface is provided, the associated delimitation of the main surface preferably runs parallel to the other longitudinal edge that is free of folds.
- the main surface of at least one of the struts has a bead.
- the respective bead causes an increase in the rigidity, in particular the resistance to buckling, of the strut.
- the bead formed as a recess in the main surface is preferably arranged between the longitudinal 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 carrier is located between the two edges delimiting the longitudinal sides and the bead. If the strut has a bead, the edges of the strut are preferably free of bends on their longitudinal sides and preferably run parallel to one another and preferably in a straight line between their fastening ends.
- the bead runs with its longitudinal extension preferably parallel to this and in particular centered with respect to the central longitudinal axis of the main surface of the respective strut.
- the recess of the main surface provided for forming the bead is preferably outward, i.e. away from the longitudinal axis of the carrier, directed.
- At least one of the struts is multi-legged, preferably two-legged or four-legged.
- the main surface and its edges are preferably designed and oriented identically on each leg of the corresponding strut.
- the multi-leg struts form with each of their legs a fastening end of the strut with which the strut is attached to the respective belt.
- Multi-leg struts thus have at least three fastening ends, whereas the alternative single-leg struts have only two fastening ends in the form of their longitudinal ends.
- the multi-legged strut or the arrangement of the associated legs is preferably mirror-symmetrical.
- the strut is also preferably designed in one piece and in particular without a welded connection between the legs and can therefore be produced in a simple manner as described above.
- the two legs In the case of the two-legged strut, the two legs converge in a connecting area of the strut on the upper chord, the connecting area also serving as one of a total of three fastening ends of the two-legged 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 carrier.
- an x-shaped or H-shaped design of the strut is preferred, which thus results in an x-shaped or H-shaped strut on the respective longitudinal side of the carrier.
- the four legs of the strut run also together in a connecting 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-legged struts each have four fastening ends, two of which are fastened to the upper chord at a distance from one another in the longitudinal direction of the carrier and two to the lower chord at a distance from one another in the longitudinal direction of the carrier.
- strut of the carrier at least one pair of struts with multiple legs and between struts with only two fastening ends, one for the upper chord and one for the lower chord, are arranged. This applies regardless of whether the struts are bend-free or have secondary surfaces or beads to increase the buckling resistance.
- a four-legged strut or a pair of struts thereof can also be provided, for example halfway along the carrier to identify the longitudinal center of the carrier.
- Several or exclusively multi-legged, in particular two-legged or four-legged, struts can be installed on a carrier, in particular as strut pairs in the above sense.
- braces with a main surface facing away from the carrier can thus be combined as braces with bevel-free braces and braces 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-legged strut.
- between at least one of the struts and the upper chord and / or between at least one of the struts and the lower chord at least one contact surface which increases the coefficient of friction.
- the contact surface which increases the coefficient of friction, causes 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 that increases the coefficient of friction.
- the surface structure of the friction-increasing contact surface differs from the surface structure of the respective component outside the contact surface.
- the function of the contact surface increasing the coefficient of friction is to increase the coefficient of friction between the connected components acting within the connection made for releasable fastening, in order to enable a higher force transmission with otherwise constant connection elements, for example the screw connection.
- a separate element can be introduced to increase the coefficient of friction, in which a contact surface that increases the coefficient of friction is formed on opposite sides, one of which then rests against one of the two components to be connected within the connection and causes a friction-increasing micro-form fit there due to its friction-increasing surface structure .
- 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 releasable fastening between the strut and the respective belt and, in the case of a screw connection, be part of this, for example inside the receiving groove described above or outside it on the legs of the respective belt delimiting the receiving groove.
- the increase in the coefficient of friction can easily be achieved flexibly at the desired position without having to change the surface structure of the strut or the belt itself.
- the element that increases the coefficient of friction can be designed, for example, as a plate, disc or fleece with a surface that is different from the strut or the belt and thus increases the coefficient of friction, for example a corrugated surface.
- the element can be used in connection with the butt joint of successive belt segments, in particular profile rails used for this purpose. If the releasable fastening between the strut and the upper chord and / or the lower chord 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 .
- the running surface is arranged in an interior space enclosed by the lower chord in order to be able to accommodate an internal trolley and the associated wheels of the trolley, for which the lower chord preferably has a C-shaped cross-section and on its an opening of the inner space delimiting legs, the tread is arranged.
- the running surface can be formed by the legs delimiting the opening of the interior space themselves. In the installation position of the carrier in an overhead transport direction according to this application, the opening points downwards.
- the trolley Starting from its internal trolley, the trolley protrudes through the opening from the lower chord or the interior space enclosed by it. As a result, the trolley can be connected to the load to be transported, which is arranged outside the lower chord, with or without the interposition of a hoist. Since the opening extends parallel to the longitudinal axis of the girder due to the c-shaped cross-section, the trolley can be moved on the running surface along the opening and thus in the trolley direction via its internal trolley and its wheels arranged in the interior.
- the lower chord of the girder according to the invention is preferably designed as a profile rail with a corresponding C-shaped cross section and an interior space limited by this for receiving the trolley running inside. If only such a profile rail with a C-shaped cross section has previously been used as a carrier for a trolley, such a profile rail is now advantageously partially a carrier for a trolley that is designed as a lattice girder.
- the upper chord and the strut formed by the struts form a lattice-like reinforcement structure for the conventional profile rail with a C-shaped cross-section, which is now used as a lower chord and which can also be used as a carrier for a trolley .
- the advantages of the carrier according to the invention are particularly effective if an overhead transport device for loads is provided with such a carrier and a trolley that can be moved along the carrier on the running surface.
- the transport device is preferably designed as a suspension track or as a crane, preferably a suspension crane.
- the carrier In such overhead transport devices, the carrier, together with the trolley arranged on it, is suspended from a steel structure or a superstructure, such as roof trusses or building ceilings.
- a steel structure or a superstructure such as roof trusses or building ceilings.
- floor-free transport devices differ, for example, from floor-mounted and rail-bound movable gantry cranes or bridge cranes in which the crane girder and the crane runway are elevated relative to the floor.
- the overhead transport device is used for linear transport of loads suspended from the trolley in the direction of travel of the trolley.
- a hoist that moves uniformly with the trolley can also be attached to the trolley of the overhead trolley, for example a chain hoist or cable, by means of which the loads can be raised and lowered.
- the transport device can also be designed as a crane.
- the carrier itself is then along with the trolley carrying the hoist a crane runway can be moved in a crane travel direction transversely to its longitudinal axis and, in the case of an overhead crane, is suspended from this.
- the carrier can be moved transversely, in particular at right angles, to its longitudinal axis, which defines the trolley travel direction, along a crane runway which defines the crane travel direction and which is also suspended in a suspension crane.
- a crane running gear with associated wheels is arranged in each case in the area of its opposite longitudinal ends.
- the girder is suspended from the crane runway using the crane trolleys.
- the two crane trolleys as well as the trolley of the trolley are each designed as an internal trolley.
- two spaced profile rails with a C-shaped cross section can be used, the legs of which serve on their inside as running surfaces for the crane trolleys and limit an opening of the interior of the profile rail.
- the crane trolleys accommodated in the interior space together with their wheels are connected to the carrier through the opening in order to suspend the carrier 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 profile rail longitudinal axis or the crane travel direction.
- the suspension crane can therefore have a total of three identical profile rails to form the crane runway and the lower chord of its girder, the profile rails being at least identical in that they all have a C-shaped cross section to accommodate the internal trolley or crane trolleys and to form the running surfaces for them .
- the profile rails can also be identical.
- the profile rails provided for forming the crane runway can also each be provided in the form of a girder according to the invention, in which the profile rail then forms the lower chord of the girder designed as a lattice girder and is reinforced by the lattice-like reinforcement structure.
- a double-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 trolleys, of which at least one, preferably an equal number, is assigned to one of the two carriers.
- the two carriers extend parallel to one another and at a distance from one another. This also applies to the running surfaces of the crane runway.
- four profile rails which are identical in the above sense, and in particular four identical carriers according to the invention, each with such a profile rail as the lower chord, can then be used.
- Cranes with even more identically constructed profile rails or girders according to the invention are conceivable herewith, 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 activating the hoist motor of the hoist is usually suspended from the trolley on a control line hanging down from the hoist and for this purpose is connected to the control line in a signal-transmitting manner via the control line.
- At least the hoist can be supplied with energy via an electrical conductor line arranged in the interior of the lower chord, for which the trolley has corresponding current collectors, or via a trailing line.
- motorized trolley and crane trolleys are also conceivable, which can then be controlled by an operator, for example via the control switch hanging on the control line.
- FIG. 1 a perspective view of a crane with a carrier according to the invention in a first embodiment
- FIGS. 2a, 2b show a first perspective and a first side detailed view of the carrier from FIG. 1,
- FIGS. 3a, 3b show a second perspective and a second side view of the carrier from FIG. 1,
- FIGS. 4a, 4b show a perspective and a side detailed view of a second embodiment of a carrier according to the invention for the crane according to FIG. 1
- FIGS. 5a, 5b show a perspective and a side detail view of a third embodiment of a carrier according to the invention for the crane according to FIG. 1
- FIGS. 6a, 6b a perspective and a side view of a fourth
- FIG. 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 chord 3, a lower chord 4 and struts 5 connecting them.
- the lower chord 4 is longer than the upper chord 3 and in particular also longer than the longitudinal extension of the strut formed by the struts 5.
- the lower chord 4 which determines the total length of the carrier 2, protrudes in the direction of its longitudinal ends on both sides
- a trolley 6 is arranged on the carrier 2, which carries a hoist 6c, for example designed as a chain hoist, and which can be moved on a running surface of the carrier 2 in a horizontal trolley travel direction X via wheels 6b of its trolley 6a.
- the trolley travel direction X is defined by the running surface for the trolley 6, which extends on the carrier 2 in its longitudinal direction, that is, parallel to its longitudinal axis.
- the running surface for the trolley 6 is enclosed in one of the lower chord 4 Arranged interior in which the internal trolley 6a and the wheels 6b of the trolley 6 are added.
- the lower chord 4 in the present example has a C-shaped cross section, on whose legs, which delimit an opening in the interior, the running surface is arranged.
- the carrier 2 is also suspended in the region of its longitudinal ends on two spaced profile rails 10 each having a C-shaped cross section and defining a crane runway of the crane 1.
- the suspension of the carrier 2 takes place via crane trolleys 7, 8 attached in the region of the longitudinal ends of the carrier 2, each of which is partially accommodated, in particular with its wheels (not shown), in an interior space enclosed by the associated profile rail 10 and by one of the legs of the respective Profile rail 10 limited opening are connected to the carrier 2 therethrough.
- the profile rails 10 are also suspended from a superstructure via rail suspensions (not shown) and are arranged, for example, parallel to one another.
- the lower chord 4 of the girder 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.
- FIG. 1 also shows that the lower chord 4 is formed by two chord segments 4b or correspondingly long profile rail segments, which meet in the area of their butt joint 11 and are fastened to one another in alignment in the longitudinal direction of the carrier 2.
- the upper belt 3 can also be constructed in several parts in this way and be formed by several belt segments.
- the lower chord 4 is longer than the upper chord 3 and the longitudinal extension of the strut formed by the struts 5.
- the lower chord 4 protrudes in the direction of its longitudinal ends on both sides over the strut and the upper chord 4.
- FIG. 1 shows a control switch 9 which is connected in a signal-transmitting manner 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.
- FIG. 1 also shows an arrangement of struts 5 in pairs along the longitudinal axis of the girder 2, the struts 5 of the strut pairs being arranged in such a way that there is an alternating rising and falling inclination of the struts 5 or the associated legs 5d along each longitudinal side (see FIG also Figures 3a and 3b) results.
- the struts 5 are each detachably fastened with at least one of their fastening ends 5f (see, for example, FIGS.
- the detachable fastening takes place, for example, via a screw connection at each fastening end 5f.
- a receiving groove 3a, 4a see, for example, FIGS.
- all struts 5 of the carrier 2 are completely free of bends in the above sense.
- the main surfaces 5a of the struts 5 therefore point longitudinally and horizontally away from the carrier between the upper chord and the lower chord and extend in particular vertically to the running surface and the crane runway.
- the longitudinal edges of the struts 5 have a biconcave and thus the main surface 5a a constricted course on both sides, whereby the struts 5 or legs 5d, starting from the respective fastening end 5f, initially taper along their longitudinal extent and then in the direction of the opposite fastening end 5f widen again.
- the struts 5 of the carrier 2 from FIG. 1 differ, so that a total of two variants of the struts 5 are installed on the carrier 2.
- the configuration of the first variant of the struts 5 from FIG. 1 is also shown in the detailed views of FIGS. 2a and 2b.
- the configuration of the second variant of the struts 5 from FIG. 1 is also shown in the detailed views of FIGS. 3a and 3b.
- the struts 5 according to the first variant only have two fastening ends 5f in the form of their opposite longitudinal ends, one of which is attached to the upper chord 3 and one to the lower chord 4, the struts 5 according to the second variant are two-legged and thus multi-legged.
- the two legs 5d thus formed for each strut 5 converge in a connection area 5e of the strut 5 on the upper chord 3, the connection area 5e at the same time forming one of the three fastening ends 5f 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 carrier 2.
- the two-legged struts 5 also have on their legs 5d, due to symmetry, in particular identically designed main surfaces 5a.
- each fastening end 5f is fastened to the upper belt 3 or lower belt 4 with a screw connection comprising two screws 12.
- each of the three fastening ends 5f is fastened to the upper belt 3 or lower belt 4 with a screw connection comprising four screws 12.
- FIG. 1 two strut pairs of two-legged struts 5 and between strut pairs, the struts 5 of which have only two fastening ends 5f, are arranged at each of the opposite longitudinal ends of the strut of the carrier 2.
- the detailed views of Figures 3a and 3b show the two-legged struts 5 of one of the two longitudinal ends.
- Figures 4a and 4b show detailed views of a second embodiment of a alternative carrier 2 according to the invention for the crane 1 according to FIG. 1.
- the struts 5, as well as the variant shown in FIGS. 2a and 2b each have only two fastening ends 5f.
- An essential peculiarity of the struts 5 according to the second embodiment is that they have on each of their longitudinal sides a secondary surface 5b adjoining 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 carrier 2.
- the struts have a U-shaped cross section.
- FIGS. 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 FIG. 1.
- the struts 5 of this embodiment differ from the struts 5 of the second embodiment according to FIGS 5 of the carrier 2 are designed to be completely bend-free in the above sense, that is to say, in particular, no secondary surfaces 5b are provided on their longitudinal sides.
- the main surface 5a of each strut 5 has a bead 5c instead.
- the bead 5c formed as a recess in the respective main surface 5a is arranged between the longitudinal 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 carrier 2 is located between the two edges delimiting the longitudinal sides and the bead 5c.
- the longitudinal extension of the bead 5c also runs parallel and centered with respect to the central longitudinal axis of the main surface 5a of the respective strut 5.
- the indentation of the main surface 5a provided for forming the bead 5c is directed outwards, for example.
- FIGS. 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 FIG. 1.
- the struts 5 of this embodiment differ from the struts 5 of the second and third embodiment according to FIGS. 4a to 5b essentially in that all struts 5 of the carrier 2 are designed to be completely bend-free in the above sense, that is to say no secondary surfaces 5b are provided, and also none Beads 5c are provided.
- the struts 5 according to the fourth embodiment are designed with multiple legs. In contrast to the two-legged struts 5 from FIGS. 1, 3a and 3b, however, the struts 5 of the fourth embodiment are four-legged.
- each strut 5 converge in a connection area 5e which, unlike the two-leg variant, is not arranged on the upper chord 3, but in the free area of the strut 5 between the upper chord 3 and the lower chord 4. This results in an X-shaped or H-shaped configuration of these struts 5.
- the four-legged struts 5 also have, on their legs 5d, in particular identically designed main surfaces 5a due to symmetry. Due to the x- or H-shaped shape, the four-legged struts each have four fastening ends 5f, two of which are fastened to the upper chord 3 at a distance from one another in the longitudinal direction of the carrier 2 and two to the lower chord 4 at a distance from one another in the longitudinal direction of the carrier 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)
Abstract
Description
Claims
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 (de) | 2019-09-30 | 2020-09-25 | Träger für eine laufkatze und flurfreie transporteinrichtung mit einem solchen träger |
Publications (3)
Publication Number | Publication Date |
---|---|
EP4038008A1 true EP4038008A1 (de) | 2022-08-10 |
EP4038008C0 EP4038008C0 (de) | 2024-05-01 |
EP4038008B1 EP4038008B1 (de) | 2024-05-01 |
Family
ID=72670695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20781467.4A Active EP4038008B1 (de) | 2019-09-30 | 2020-09-25 | Träger für eine laufkatze und flurfreie transporteinrichtung mit einem solchen träger |
Country Status (8)
Country | Link |
---|---|
US (1) | US20220332547A1 (de) |
EP (1) | EP4038008B1 (de) |
CN (1) | CN114555510A (de) |
DE (1) | DE102019126399A1 (de) |
ES (1) | ES2982658T3 (de) |
HU (1) | HUE066773T2 (de) |
PL (1) | PL4038008T3 (de) |
WO (1) | WO2021063810A1 (de) |
Family Cites Families (29)
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US2024001A (en) * | 1933-05-12 | 1935-12-10 | Callenders Cable & Const Co | Framed bridge or bridge-like structure |
US2146540A (en) * | 1937-02-05 | 1939-02-07 | Harry W Hahn | Structural member for buildings |
US2366574A (en) * | 1943-09-10 | 1945-01-02 | Ind Brownhoist Corp | Bridge crane |
US3112015A (en) * | 1960-02-15 | 1963-11-26 | Beatty Bros Ltd | Mast construction |
CH389204A (de) * | 1961-05-19 | 1965-03-15 | Alusuisse | Laufkranbrücke aus Leichtmetall |
US3152671A (en) * | 1961-07-03 | 1964-10-13 | Jr Arnie M Mallory | Structural truss components or the like |
US3294252A (en) * | 1962-12-06 | 1966-12-27 | Ishikawajima Harima Heavy Ind | Crane girders |
US3416283A (en) * | 1966-11-03 | 1968-12-17 | Sanford Arthur Carol | Combination wood and metal trusses |
US4002116A (en) * | 1975-05-09 | 1977-01-11 | Jack N. Schmitt | Apparatus for forming trusses |
US4106256A (en) * | 1976-12-01 | 1978-08-15 | Symons Corporation | Adjustable shoring apparatus |
JPS564710Y2 (de) * | 1977-07-02 | 1981-02-02 | ||
US4348850A (en) * | 1979-08-06 | 1982-09-14 | Moehlenpah Industries, Inc. | Web member |
US4475328A (en) * | 1979-08-06 | 1984-10-09 | Moehlenpah Industries, Inc. | Web member |
US4541218A (en) * | 1982-01-07 | 1985-09-17 | Gang-Nail Systems, Inc. | Truss structures constructed with metal web members |
US4485606A (en) * | 1982-01-07 | 1984-12-04 | Gang-Nail Systems, Inc. | Truss structures constructed with metal web members |
US4621475A (en) * | 1982-08-09 | 1986-11-11 | Glitsch, Inc. | Structural strut and truss formed therefrom |
US4665677A (en) * | 1982-09-24 | 1987-05-19 | Gang-Nail Systems Inc. | Truss assembly and bracing clip and attachment member for use with trusses |
JPH0222673Y2 (de) * | 1985-07-25 | 1990-06-19 | ||
DE19545453A1 (de) * | 1995-12-06 | 1997-06-12 | Paul Lingen | Hubgerüst |
CN2425129Y (zh) * | 2000-06-02 | 2001-03-28 | 郑州市华中建筑机械有限公司 | 等腰三角形蜂窝式主纵梁 |
US20060283129A1 (en) * | 2005-06-02 | 2006-12-21 | Larry Salhaney | Modular, structural, element, space frame or truss |
CN202148605U (zh) * | 2011-07-21 | 2012-02-22 | 重庆中瑞鑫安实业有限公司 | Z形连接件及其连接的轻钢桁架 |
DE102014107323A1 (de) * | 2014-05-23 | 2015-11-26 | Terex Mhps Gmbh | Kranträger für einen Kran, insbesondere für einen Brücken- oder Portalkran, und einen Kran hiermit |
DE102015101755A1 (de) * | 2015-02-06 | 2016-08-11 | Terex MHPS IP Management GmbH | Kran, insbesondere Brückenkran oder Portalkran, mit mindestens einem Kranträger |
CN205527355U (zh) * | 2016-01-19 | 2016-08-31 | 郑州市华中路桥设备有限公司 | 一种矩形蜂窝式主纵梁 |
DE102016120115A1 (de) * | 2016-10-21 | 2018-04-26 | Konecranes Global Corporation | Laufkran |
CN106477453B (zh) * | 2016-12-08 | 2018-10-12 | 上海振华重工(集团)股份有限公司 | 三片开口式桁架结构大梁和应用该大梁的岸桥 |
DE102017102372B3 (de) * | 2017-02-07 | 2018-05-30 | Stahl Cranesystems Gmbh | Vorrichtung mit einem Träger in Segmentbauweise und Verfahren |
US10421645B2 (en) * | 2017-02-14 | 2019-09-24 | Raymond D. Givens | Crane rail |
-
2019
- 2019-09-30 DE DE102019126399.9A patent/DE102019126399A1/de active Pending
-
2020
- 2020-09-25 EP EP20781467.4A patent/EP4038008B1/de active Active
- 2020-09-25 CN CN202080066357.3A patent/CN114555510A/zh active Pending
- 2020-09-25 WO PCT/EP2020/076847 patent/WO2021063810A1/de active Search and Examination
- 2020-09-25 US US17/754,344 patent/US20220332547A1/en active Pending
- 2020-09-25 HU HUE20781467A patent/HUE066773T2/hu unknown
- 2020-09-25 PL PL20781467.4T patent/PL4038008T3/pl unknown
- 2020-09-25 ES ES20781467T patent/ES2982658T3/es active Active
Also Published As
Publication number | Publication date |
---|---|
CN114555510A (zh) | 2022-05-27 |
ES2982658T3 (es) | 2024-10-17 |
EP4038008C0 (de) | 2024-05-01 |
US20220332547A1 (en) | 2022-10-20 |
PL4038008T3 (pl) | 2024-07-15 |
EP4038008B1 (de) | 2024-05-01 |
DE102019126399A1 (de) | 2021-04-01 |
WO2021063810A1 (de) | 2021-04-08 |
HUE066773T2 (hu) | 2024-09-28 |
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