EP1634846B1 - Crane boom for container transport and transport device for the parts of the crane boom - Google Patents

Abstract

The crane jib (1) is assembled from several sections (2-7) which on the respective ends have coupling pieces (8) for the joining together of the jib sections. The jib sections have at least one lower boom (9,13) and are fitted together in such a way that the lower booms form a continuous running track for a crane trolley. The jib sections have a different cross section so that the sections for the purpose of transporting can slide into one another and in that state are transportable as container freight. Independent claims are also included for the following: (A) a transporting device for the transporting of jib sections of a crane jib which has a pair of transporting frames which on one side have connecting elements for the connecting to end face coupling pieces of a jib section, and on the other side have container connecting pieces compatible for standard containers; and (B) a container unit consisting of a crane jib, whereby the transporting frames are mounted on at least one jib section, and preferably on two adjacent jib sections.

Description

The present invention relates to a crane boom for transport as container cargo, which is composed of a plurality of boom pieces, each having at the front end coupling pieces for engaging the boom pieces, wherein the boom pieces each have at least one lower flange. The invention further relates to a container unit consisting of the jib pieces of the crane jib and such a transport device for transporting jib pieces as container cargo.

Due to the ever increasing transport costs, the transport volume also plays an important role in cranes to be loaded. Especially bulky are crane jibs of tower cranes, which not infrequently reach jib lengths of more than 60 m. Such crane boom of tower cranes are generally similar to the system over the entire boom length, so that they can be transported with difficulty space-saving.

A reduction of the transport volume and a greater space utilization can be achieved with a telescopic boom, in which the boom pieces can be copied together. However, such telescopic boom require a special trolley shape, since the boom pieces have to work in crane mode with different Untergurtspuren for the trolley or have offset in height lower straps to allow for pushing together. Such telescopic boom are relatively expensive. In addition, it is necessary to construct the trolley so that it can either drive over the height jumps or the track width offset between the lower chords of different boom pieces.

Crane jibs in which the jib pieces can be put together in succession by means of coupling pieces provided at the front end are much simpler and also less expensive to produce. In such crane jibs, the jib pieces can be joined together so that the lower chords adjoin one another without offset and jump and form over the interfaces between the boom pieces away a consistently substantially offset and jump-free career for the trolley of the crane. In such crane jibs, however, the problem arises to be able to transport them space-saving, since the boom pieces regularly correspond to each other, so that they can only be placed side by side. However, this makes it impossible to package a crane boom in a standard 40-foot container. It must be regularly used several containers for the shipment of a crane jib or more transports are carried out.

From the DE 24 53 166 It is known, for the purpose of transport in each case to put a crane boom shot in a crane tower and attach to the ends of the crane tower shot the usual corner fittings of containers carrying transport frame, so that the crane tower shot with the crane boom shot inserted therein can be transported as a container unit.

The present invention is therefore an object of the invention to provide a crane boom of the type mentioned above and a transport device for transporting the boom pieces of such a crane jib, which avoid the disadvantages of the prior art and further develop the latter in an advantageous manner. Preferably, a space-saving transport of the crane jib as container freight is to be made possible without having to buy this with an expensive manufacturability of the crane jib.

This object is achieved with respect to the crane boom by a crane boom according to claim 1. With regard to the transport device, the stated object is achieved by a transport device having the features of claim 11.

According to the invention, therefore, the boom pieces are such aneinanderetzbar that the lower chords of the boom pieces together form a continuous offset and jump-free track for a trolley, the boom pieces of the crane boom, despite the identical lower chord track dimensions, a largely offset and jump-free track for a normal Create trolley on the lower chords, have such different cross-sections that the boom pieces are telescoped for the purpose of transport, whereby the space is used in the boom pieces. At least one of the boom pieces is advantageously also connected in the telescoped state of the boom pieces with a pair of transport frame, each having container containers compatible with standard containers outer terminals. The said Trarisportrahmen possess not only the container-compatible outer connection pieces, but also connecting elements for connection to the one jib piece. In particular, the connecting elements are designed such that they can be connected to the front-side coupling pieces of the corresponding boom piece, which actually serve the Aneinanderetzen the boom pieces to form the crane jib. The transport frames bridge, so to speak, the connection dimensions of the boom pieces to the external connection dimensions of standard containers. It is according to the invention a Container unit created on the one hand from the crane boom or its boom pieces and on the other hand from the two transport frame, the transport frame are frontally mounted on at least one boom piece, preferably two juxtaposed boom pieces in which the other boom pieces of the crane were pushed. This container unit forms a wall-free container, which is self-supporting by the boom piece or the boom pieces, which are connected to the transport frame.

In order to make the best possible use of the usual dimensions of a standardized 40-foot container, the transport frames each have two juxtaposed sets of connecting elements by means of which two boom pieces arranged alongside each other can be fastened to the transport frame by their coupling pieces. In these two boom pieces advantageously the remaining boom pieces of the crane boom can be inserted, which have a correspondingly reduced cross-section.

In order to sufficiently stiffen the transport frame, the four frame legs assembled into a closed rigid profile can advantageously be stiffened by at least one diagonal strut.

The jib pieces of the crane jib can have different cross-sectional geometries. According to a first advantageous embodiment of the invention, all boom pieces each have two lower chords, which are formed with identical track dimensions, so that in the assembled state of the boom pieces two each offset and jump-free raceways for the wheels of a trolley are formed. A first group of jib pieces in this case has at least two upper chords, while a second group of jib pieces has only one upper chord.

According to a second advantageous embodiment of the invention, all boom pieces may also each have only one lower flange, so that the trolley with its wheels on the only one lower flange of the boom pieces moves, but which are also so composable that a continuous offset and jump-free career is formed , In this case, the boom pieces preferably have a plurality of upper straps arranged in different track dimensions.

The cross-sectional differences between the boom pieces may be adapted to the respective boom length and the number of boom pieces into which the crane boom is subdivided. In principle, it would be possible to use the boom pieces to provide such stepped cross-sections that the boom pieces can be pushed into each other for the purpose of transport in the manner of a telescope system. However, a better space utilization for the format of a standardized 40-foot container results from the fact that the boom pieces are formed with such different cross sections that in a boom piece with a larger cross-section two boom pieces with a smaller cross-section are inserted side by side. This makes it possible to form the crane boom still relatively similar to the system. It can be built side by side two boom pieces with a larger, identical cross-section between the transport frame and record up to four boom pieces with smaller each identical cross-section.

Particularly space-saving telescoping the boom pieces are then when different Aüslegerstücke have a different number of longitudinal straps. According to one embodiment of the invention, at least one jib piece can be designed as a three-belt carrier, while at least one other jib piece is designed as a four-belt or multi-belt carrier. Conveniently, the Viergurtträger has the larger cross section, so that the Dreigurtträger can be pushed into the Viergurtträger.

In order to make optimum use of the space in the four-belt carrier and to use a trolley which engages around the lower straps from the outside, the at least one boom piece with the at least four longitudinal straps can have two lateral diagonal braces, that of the lower straps to the upper straps V-shaped spread are arranged, ie the diagonal braces run from top to bottom inside. Thus, the lower flange for driving on a trolley remains free, while at the same time the inner cross section remains as large as possible in order to push the other boom pieces can.

Conveniently, the boom pieces are arranged with the fewer longitudinal straps towards the boom tip, while the boom pieces are arranged with the plurality of longitudinal straps to the boom foot. In particular, two Viergurtträger be arranged on the boom foot and be supplemented by several Dreigurtträger to Auslegererspitze out. It is understood, however, that other subdivisions and arrangements are possible in principle.

In order to achieve sufficient rigidity of the crane jib, the jib pieces arranged towards the jib tip can be tensioned with only three longitudinal belts by bracing on the jib pieces located further inwards and / or on a tower top of a tower crane. The crane boom can basically be designed as guyed crane boom, in which case the bracing of the outer boom pieces will be guided to the spire. Alternatively, however, the crane jib can also be designed as a pure bending beam jib. The bracing is performed in this case to the more inner boom pieces.

In order to safely arrange the boom pieces with a smaller cross section in the boom pieces with a larger cross-section, fastening means are advantageously provided for fastening the inserted boom pieces to the outer boom pieces with a larger cross-section. In principle, it would also be possible to fix the inserted boom pieces also to the frame parts. However, the attachment to the outer boom pieces is particularly advantageous if the inserted boom pieces have a smaller length than the outer boom pieces with a larger cross-section.

Fig. 1:

eine Seitenansicht eines Kranauslegers für einen Turmdrehkran nach einer bevorzugten Ausführung der Erfindung,

Fig. 2:

Stirnansichten der Auslegerstücke des Kranauslegers aus Fig. 1, die die unterschiedlichen Querschnittsformen der Auslegerstücke zeigen,

Fig. 3:

eine Seitenansicht der für den Transport zusammengepackten und ineinander geschobenen Auslegerstücke des Kranauslegers aus Fig. 1,

Fig. 4:

eine Stirnansicht der für den Transport zusammengepackten Auslegerstücke aus Fig. 3,

Fig. 5:

eine Stirnansicht der für den Transport zusammengepackten Auslegerstücke aus Fig. 3 mit angebauten Transportrahmen, die die Anordnung eines stirnseitigen Transportrahmens an den Auslegerstücken zeigt,

Fig. 6:

eine Seitenansicht der für den Transport zusammengepackten und ineinander geschobenen Auslegerstücke des Kranauslegers ähnlich Fig. 3 mit angebauten Transportrahmen, und

Fig. 7:

eine Seitenansicht eines Kranauslegers für einen Turmdrehkran nach einer alternativen Ausführung der Erfindung, bei der die Abspannung der Auslegerstücke mit kleinerem Querschnitt eine zusätzliche Abspannstrebe aufweist.

The invention will be explained in more detail below with reference to a preferred embodiment and associated drawings. In the drawings show:

Fig. 1:

a side view of a crane boom for a tower crane according to a preferred embodiment of the invention,

Fig. 2:

End views of the boom pieces of the crane boom Fig. 1 showing the different cross-sectional shapes of the boom pieces,

3:

a side view of the packed together for transport and telescoped boom pieces of the crane boom Fig. 1 .

4:

an end view of the packed together for transport boom pieces Fig. 3 .

Fig. 5:

an end view of the packed together for transport boom pieces Fig. 3 with attached transport frame, which shows the arrangement of a frontal transport frame on the boom pieces,

Fig. 6:

a side view of the packed together for transport and telescoped boom pieces of the crane boom similar Fig. 3 with attached transport frames, and

Fig. 7:

a side view of a crane boom for a tower crane according to an alternative embodiment of the invention, in which the bracing of the boom sections with a smaller cross-section has an additional bracing strut.

The in FIG. 1 Drawn crane jib 1 of a tower crane is composed of several, in the illustrated embodiment, six jib pieces 2 to 7. It is understood, however, that the crane boom may be composed of more or fewer than six boom pieces. In particular, it is possible to configure the crane boom according to the desired boom length by inserting additional or removing individual boom pieces. The boom pieces 2 to 7 each comprise frontally arranged coupling pieces 8, by means of which the boom pieces 2 to 7 can be placed against one another in the manner of a chain and connected to one another. The coupling pieces 8 may be formed in the usual way as a pin connector. As FIG. 1 shows, the jib pieces 2 to 7 are each formed as a lattice girder.

In the illustrated embodiment, two groups of boom pieces 2, 3 and 4 to 7 are provided, which differ from each other by the number of their longitudinal straps and their cross-sectional shape, wherein within each group, the boom pieces are formed substantially identical to each other. In order to nest the boom pieces to save space and to arrange for transport, depending on the design of the crane jib more than two groups of jib pieces can be provided. The formation of the boom pieces in two groups, however, brings a higher system similarity with it.

The first two jib pieces 2, 3 constituting the first group of jib pieces are arranged at the foot of the jib and have a larger cross section than the jib pieces 4 to 7 of the second group of jib pieces arranged toward the jib tip. As FIG. 4 shows, the two larger boom pieces 2 and 3 each have four longitudinal straps, in each case two lower straps 9 and two upper straps 10, which are arranged at the corners of a rectangle. As FIG. 4 shows the upper straps 10 are connected to the lower straps 9 by two cross braces 11 of lattice struts 12 together, the cross braces 11 from top to bottom inside, ie the articulation points of the lattice struts 12 on the lower straps 9 are offset inwards, so that the tops the lower straps 9 remain free and each form a career for a trolley, not shown, of the crane.

The boom pieces 4 to 7 of the second group of boom pieces are each formed as a three-belt carrier. They each have two bottom straps 13 and a top flange 14, wherein the bottom straps 13 are formed with identical track dimensions as the bottom straps 9 of the boom pieces 2 and 3. In the assembled state of the boom pieces, like him FIG. 1 shows, the tops of all lower chords 9 and 13 of the boom pieces 2 to 7 are mutually offset and jump-free, so that a continuous offset and jump-free track for the wheels of the trolley is formed.

The lengths of the two larger boom pieces 2 and 3 are identical to each other. The lengths of the outer boom pieces 4 to 7 are each smaller than the length of the boom pieces 2 and 3. In addition, the cross sections of the outer boom pieces 4 to 7 are dimensioned such that each two boom pieces 4, 5 and 6, 7 adjacent to each other in one of the larger Boom pieces 2 or 3 can be inserted. The trained as Dreigurtträger jib pieces 4 to 7 are this rotated about its longitudinal axis relative to the assembled state, so that the width or the distance of the lower chords 13 from each other, which corresponds to the lower chords 9 of the larger boom pieces 2 and 3, does not bother. The advantage here is the oblique arrangement of the cross braces 11 of the larger boom pieces 2 and 3, as FIG. 4 shows.

For the purpose of transport to the coupling pieces 8 of the two adjacent boom pieces 2 and 3 are mounted with a larger cross section in each case the front side transport frame 15, which, as in FIG. 5 shows, consist of four to a closed, rigid frame composite frame legs 16 which are stiffened by a diagonal strut 17. The transport frames 15 each have two sets of connecting elements 18, by means of which they can be attached to the coupling pieces 8 of the two superimposed or juxtaposed boom pieces 2 and 3.

In addition, the transport frame 15 have external connection pieces 19, which correspond in their arrangement and their dimensions to the fittings standardized container. Are the transport frame 15 to the package of boom pieces 2 to 7 consisting of the superposed boom pieces 2 and 3 and the inserted therein boom pieces 4 to 7 according to FIG. 3 mounted, a self-supporting, wall-free container unit is created, which is stackable with other standard and commercial containers. The transport frames form the outer connecting pieces on which and under the other containers can be stacked.

When assembling for transport can proceed as follows: First, one of the transport frame 15 is placed on the ground. With a crane, the two boom pieces 2 and 3 are placed vertically and bolted in the lower part with the connecting elements 18 of the transport frame 15. Then also vertically from above, the introduction of the other boom pieces 4 to 7 in the two boom pieces 2 and 3 in the respective corresponding position, where bearings and / or fastening means are present, so that the boom pieces 4 to 7 in the boom pieces 2 and 3 centered and fixed for transport. Then, the second transport frame 15 is mounted on the above end of the boom pieces 2 and 3, for which purpose this in turn is bolted to the coupling pieces 8 of the boom pieces 2 and 3.

The boom pieces 4 to 7 of the crane boom need not necessarily be assembled with the transport frame 15 to form a container unit for transport. When transporting from one construction site to the next, the boom pieces can be advantageously loaded in the telescoped state on commercial semi-trailer, whereby also here the reduction of the transport volume by the nesting of the boom pieces represents a significant, cost-reducing advantage.

As FIG. 1 shows the outer boom pieces 4 to 7 with a smaller cross-section at the inner boom pieces 2, 3 can be braced by a brace 21. This can also be performed via a guy clamp 22, such as FIG. 7 shows.

Claims (13)

1. A crane boom for transport as container freight which can be assembled from a plurality of boom parts (2 - 7) which each have coupling pieces (8) at the front face end for the putting together of the boom parts (2 - 7), wherein the boom parts (2 - 7) each have at least one bottom chord (9, 13), characterized in that the boom parts can be placed next to one another such that the bottom chords (9, 13) of the boom parts (2 - 7) together form a continuous runway free of offset and faults for a crab; and in that the boom parts (2, 7) have different cross-sections so that the boom parts (2 - 7) can be pushed into one another for the purpose of transport and can be transported as container freight in the state pushed into one another.
2. A crane boom in accordance with the preceding claim, wherein the boom parts (2 - 7) which can be pushed into one another are dimensioned and made such that, in the state of the boom parts (2 - 7) pushed into one another, at least one of the boom parts (2, 3) can be assembled with its coupling pieces (8) at the end face to form a container unit (20) with a pair of transport frames (15) which each have container connectors (19) compatible with standard containers.
3. A crane boom in accordance with any one of the preceding claims, wherein all the boom parts (2 to 7) each have two bottom chords (9, 13) made with identical track measurements.
4. A crane boom in accordance with either of claims 1 or 2, wherein all the boom parts (2 - 7) each have only one bottom chord and a plurality of top chords which are arranged in different track widths.
5. A crane boom in accordance with any one of the preceding claims, wherein the boom parts (2 - 7) are made with different cross-sections such that two boom parts (4, 5; 6, 7) with smaller cross-sections can be pushed disposed next to one another into a boom part (2, 3) with a larger cross-section.
6. A crane boom in accordance with any one of the preceding claims, wherein at least one boom part (4, 5, 6, 7) is made as a three-chord carrier and at least one boom part (2, 3) has at least four longitudinal chords (9, 10).
7. A crane boom in accordance with any one of the preceding claims, wherein the at least one boom part (2, 3) with the at least four longitudinal chords (9, 10) has two lateral diagonal bracings (11) which are arranged spread open in V shape from the bottom chords (9) to the top chords (10).
8. A crane boom in accordance with any one of the preceding claims, wherein two boom parts (2, 3) identical in cross-section with at least four longitudinal chords (9, 10) and at least two boom parts (4 - 7) identical in cross-section and each made as three-chord carriers are provided.
9. A crane boom in accordance with any one of the preceding claims, wherein the boom parts (4 - 7) arranged toward the boom tip are guyed toward the lower end of the boom by means of a guying (21) at the boom parts (2, 3) and/or at a top of the tower.
10. A crane boom in accordance with any one of the preceding claims, wherein fastening means are provided for the fastening of the boom parts (4 - 7) with smaller cross-sections pushed into a boom part (2, 3) with a larger cross-section to the boom part (2, 3) with a larger cross-section.
11. A container unit comprising a crane boom (1) in accordance with any one of the preceding claims 1 to 10 and a transport apparatus having a pair of transport frames (15) which each have connection elements (18), on the one hand, for connection to the end face coupling pieces (8) of a boom part (2, 3) and container connectors (19) compatible with standard containers, on the other hand, by means of which the transport frames (15) can be stacked with standard containers in the state attached to the boom part (2, 3), with the transport frames (15) each being mounted at the end face to at least one boom part.
12. A container unit in accordance with the preceding claim, wherein the transport frames (15) each have two sets of connection elements (18) arranged next to one another for connection to the end face coupling pieces (8) of two boom parts (2, 3) arranged longitudinally next to or on one another.
13. A container unit in accordance with either of the two preceding claims, wherein each transport frame (15) has four frame limbs (16) assembled to form a closed rigid section as well as at least one diagonal strut (17).

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