EP2571642B1 - Roller device - Google Patents

Description

TECHNICAL AREA

The present invention relates to a roller device having at least one roller provided on a traverse extending in the roller axis direction. Several such roller units can be assembled, for example, to strand guides of casting machines, in particular to entire casting sheets or to individual segments, or be designed as a driving rollers, transport rollers or straightening rollers.

TECHNICAL BACKGROUND

Rolling devices in rolling stands with roller bearings and roller elements are known from US 4 603 729 A and the DE 10 2004 054296 A1 known.

Roller devices with roller elements mounted on cross members are likewise known.

From the DE 26 37 179 is a strand guide for a continuous casting known, wherein the bearing the respective rollers bearing housing in each case by means of separate pipes supplied coolant can be cooled.

The JP 08168859 A shows a device for cooling roller segments in a continuous casting plant, wherein the bearing housings of the respective roller segments are supplied by means of separately supplied piping with coolant.

From the EP 1 355 752 B1 is a strand guide segment known, which also includes truss elements in addition to a plurality of rollers, which are used for a secondary cooling of a slab.

Nachtellig to the previously known solutions, which use a coolant supply via separate pipes, is that these pipes due to the high temperature load In casting machines and the risk of breakthroughs in a special way susceptible to interference.

If individual segments need to be repaired or if a regular replacement of the respective roller devices takes place, these roller devices must each be connected to the separately installed piping systems, which keeps the repair times, the maintenance costs and the system failure at a significant level.

DETAILED DESCRIPTION

Starting from the known state of the art, it is an object of the present invention to increase the plant availability as well as the reliability of rolling units or segments in casting machines,

The object is achieved by a roller device with the features of claim 1.

Accordingly, a roller device comprising a traverse and at least one roller element mounted on the traverse roller element is provided. According to the invention, at least one conduit means for conducting at least one medium is provided in the traverse (30) and the roller means is provided for forming a strand-guiding segment of a casting machine, and the roller means can be installed as a preassembled module in a framework of a casting machine, preferably in a segment framework.

The term media in the present disclosure, in addition to the different cooling media and lubricating media, which must be supplied to a roller device and partially removed from this, and power supplies for sensors and switching devices, as well as data buses understood. In other words, the term media in the present disclosure all Operating means and control means understood that are supplied to the roller device during operation and discharged from this.

Advantageous to the formation of the reel unit with such a Traverse, in which over the conduit means at least three different media can be performed, so for example a cooling medium for the bearing cooling, a cooling medium for the internal roll cooling, a lubricant, a cooling medium for the secondary cooling, a compressed air medium for pneumatic controls, a hydraulic medium for hydraulic controls, a power supply, a signal routing of a sensor, etc., is that the respective conduit within the Traverse run very well protected and allow in relation to a guided on the outside of separate pipelines a higher reliability and availability of the system , Furthermore account for repair work additional assembly operations for connecting separate pipes, for example, for the supply and discharge of the cooling medium to each camp.

The cooling medium for the storage cooling, the internal roll cooling and / or the secondary cooling can be carried out as single-substance cooling, for example water, or as two-substance cooling, for example a water / air mixture. Of course, as a cooling medium, other mixtures, including multi-component mixtures, are used.

Preferably, in each case a conduit means is provided for conducting at least one of the following media: a cooling medium for the cooling of the roller bearings, a cooling medium for the internal cooling of the rollers, a lubricant for lubricating the roller bearings, a cooling medium for a secondary cooling (eg single or dual-fluid cooling), a hydraulic medium for a hydraulic control line, a compressed air medium for a pneumatic control line, a line medium for an electrical power supply, a line medium for electrical control signals, a conducting medium for electrical measuring signals, a conducting medium for optical measuring signals, or an electrical and / or optical bus system. In this way, a corresponding simplification of the supply of the respective media can be achieved.

In a further preferred embodiment, a roller device is provided, in particular for forming a strand-guiding segment of a casting machine, comprising a traverse and at least one roller element mounted on the traverse via roller bearings, wherein at least one conduit means for guiding at least one of the following media is provided in the traverse: Cooling medium for internal cooling of the rollers, cooling medium for secondary cooling (eg single or dual fluid cooling), hydraulic medium for a hydraulic control line, compressed air medium for a pneumatic control line, conducting medium for electrical power supply, conducting medium for electrical control signals, conducting medium for electrical measuring signals, conducting medium for optical measuring signals, or electrical or optical bus system. By directing these "new media" directly into the crossbeam, new possibilities with regard to assembly and reliability of the roller element open up.

In a further preferred embodiment, a roller device comprising a traverse and at least one roller element mounted on the traverse roller element is proposed, wherein in the traverse at least one conduit means for conducting at least one medium is provided and the roller means is provided for forming a strand-guiding segment of a casting machine.

Previously, roller traverses (traverse with mounted roller) were used only in foundries and not in segments. In cast sheets, the rollers with traverse must be separately removable, since the removal of the pouring arc always means a longer downtime and thus loss of production. Since the support braces are arranged to support the rollers in a casting in the casting direction, the roller traverses have a comparatively large moment of resistance (high height) for the support of the rollers, which is significantly greater than the moment of resistance of the media used in segments.

• Senkrechtanlage: Alle Rollenpaare der Strangführung bis zu der maximalen Position, an der der Strang durcherstarrt sein soll, sind senkrecht untereinander angeordnet.

The roles on media traverses have been used only in foundries, but not in segments of continuous casting. Here for clearer delimitation the following definitions:

• Vertical installation: All roller pairs of the strand guide up to the maximum position where the strand should be solidified are arranged vertically with each other.

(Circular) sheet system: The copper plates of the molds as well as a larger part of the roller pairs are arranged geometrically on a circular arc, whereby this circular arc describes an angle of approx. 90 °. In the casting direction close to the circular arc of guide roller pairs, which direct the cast strand and forward to a straight horizontal part of the strand guide.

Vertical Turning Machine: Combination of the above two machine types, where the mold plates and the first pairs of rolls are perpendicular to each other, the strand is then bent by pairs of rolls into a circular arc. After the arch part close again pairs of straightening, which direct the cast strand and forward to a straight horizontal part of the strand guide.

Casting arc (strand guide): The casting arc is an old design, the z. B. was used in vertical turn-off systems (and will), wherein the entire arc lying in the arc of the proportion of the strand guide is summarized in terms of mechanical engineering in the pouring arc, i. the number of pairs of rolls is typically on the order of 25-45 pairs of rolls; the support of the casting roll for the rollers with roller traverses via support braces, which are arranged in the casting direction; when using roller traverses they are designed to support the roller with a comparatively high resistance moment (high height, for example at Arcelor Mittal Steel Eisenhüttenstadt 100mm thick) (very robust construction).

Segment (strand guide): Newer design of strand guides: The number of pairs of rolls max. 10 in the bow section and max. 14 - 16 in the vertical part or bent part of the strand guide (especially for smaller roll diameters); in the arch part there are always several segments; the support braces for the rollers in the segment are located under the roller bodies, ie the support braces are perpendicular to the casting direction. The leadership of the pipes for a role is usually along the support braces; the rollers are not replaced in the system, but in the segment workshop; To do this, the entire segment is replaced. The upper frame and lower frame of the segment form a unit; The removal of the segments from the strand guide always takes place upwards.

Arc segment (strand guidance): Like segment with max. 10 roller pairs, wherein the roller pairs are geometrically arranged on a circular arc section.

Preferably, the conduit means are provided for the media in the form of bores, in particular deep hole drilling, in the traverse, in the form of closable with lids channels in the traverse and / or in the form of laid within the traverse piping.

In this way, the roller device can be constructed as a complete module and the corresponding guided in the Traverse conduit means for the media can be fully tested and pre-adjusted already in this pre-assembled state. In this way, a segment can be repaired in less time and with less effort. For example, a possibly damaged roller device, for example within a segment comprising 14 roller devices, can be easily exchanged. Since the roller device is preassembled, pre-tested and pre-adjusted, the replacement of the reel unit in the segment can proceed swiftly. Accordingly, the repair effort and repair times in the segment workshop compared to conventional segments can be reduced.

Preferably, the roller device can be constructed so that in the traverse additional conduit means are provided for at least one other medium, in particular for the conduction of a cooling medium of a secondary cooling (single or two-fluid cooling), a power supply and / or signal routing for sensors or switching elements. Preference is given to all inlets and outlets For all the media required in the roller device inside the crossbeam, in order to carry out a complete module test, to be able to accommodate all the conduit means in the crossbeam and to be able to easily install the modules.

In order to achieve quick installation and easy maintenance, the respective media connections communicating with the conduit means in the crossbeam are provided at one end face, longitudinal side or rear side of the crossbeam. In this way, it is for example possible to screw a roller device to the respective support frame of a segment, and then the respective inlets and outlets, for example for the cooling medium circuits, the grease circuit, the power supplies and the sensor and switching devices merely by simply connecting coupling devices at the appropriate media connections with the Traverse to connect. The Traverse can be designed so that the media connections are automatically coupled by placing the Traverse on a segment frame with the respective leads.

An efficient connection device can for example also be provided via suitable coupling elements, such as hybrid connectors, water retaining plates with flat seals, connecting pipes with double-sided O-rings, etc., so that the connection of the respective inlets and outlets to the roller device can easily and reliably take place. Preferably, the plug, coupling and coupling elements are designed so that they can lead at least two media simultaneously. In this way, the respective connection can be carried out more efficiently, since the number of coupling operations can be reduced.

In order to enable easy maintenance of the respective media channels in the traverse, they can be provided as milled channels, which is closed, for example, on the back of the traverse, so the side facing away from the slab of the crosshead with a lid, so that for maintenance or cleaning only this lid must be opened to service the respective cooling media channels. But it can also open channels or provided with silicone sealed channels be in which the conduit are laid. Open or sealed with silicone channels are preferably provided on the side facing away from the slab of the crosshead, so the "back" of the traverse. In a further preferred embodiment, extending along the traverse and firmly connected to this conduit means are provided.

The arrangement of the respective media channels within the traverse separate pipes and cables that have been laid outside of the traverse according to the prior art and this were supplied across the entire beam width, no longer laid in the vulnerable area between the outer bearing housings , so that in this way the risk of damage in breakthroughs or in the high radiant heat within the respective casting machine can be reduced.

Furthermore, it is possible by the arrangement of the media channels within the Traverse to form arc segments with small roll diameters and correspondingly small casting radius, which was previously complicated due to the large number of supplied pipes and error prone, or not possible due to the lack of accessibility to carry out welding was. By means of the present traverses casting machines with small casting radii, for example 4000 to 5000 mm, can now also be formed, the rollers also allowing small roller diameters, for example 120 mm to 180 mm.

An advantage of the design of the trusses in the proposed form is that by placing the trusses on the segment frame support bars can be omitted in the segment frame, as these are then formed by the traverse. Accordingly, every 2nd or 3rd support can be omitted in the segment frame.

Furthermore, by guiding the respective conduit means within the traverse, it can be achieved that the segment frame structure in which a plurality, for example seven, roller devices are to be received, becomes clear is simplified, since separate pipe connections for coolant circuits or signal lines need not be provided, or at least not in the hitherto necessary extent, when the trusses are coupled in the casting direction one behind the other.

Various signal lines for different measuring tasks, such as bearing force, storage temperature, line temperature, cooling medium temperature, flow rates, pressures, moisture, etc., can be recorded in the media supply and distribution devices within the crossbar. These measurement signals can then be tapped at a central location, for example at the front, at a portion of the long side, or at the rear of the crossbar, for example, via a multi-function plug, intelligent terminal, data bus connection, or other efficient manner without signal lines would have to be relocated to the respective sensors outside the housing of the traverse. Accordingly, the routing can be made more efficient here and the corresponding signal lines are no longer in the thermal and mechanical danger zone of the casting line.

Another advantage of this is that the sensors of the roller device already in the modular state, ie before the roller device is installed in a segment, can be completely pre-assembled, pre-tested and preset or adjusted, since the roller device can form a self-contained system. The individual conduit means for the different media can also be fully tested for function. Due to the modular design and the complete functional test, the installation times in the respective segments can be significantly reduced.

In a further preferred embodiment, a media circuit for the secondary cooling can also be accommodated in the traverse. For this purpose, water distribution chambers are advantageously provided for the nozzles in the roller line and it can also be provided switching valves in or on the traverse to turn on and off individual nozzles, for example, to provide a secondary cooling for different strand widths.

It is advantageous to provide the respective media connections for the conduit means on the longitudinal sides of the respective traverses such that, when two traverses are pushed together, a connection of the respective media connections of the adjacent traverses is made such that the corresponding conduit means are connected to one another via the media connections. In this way, for example, a cooling circuit can be continuously produced from a first roller unit to the last roller unit, quasi in a series connection, without requiring separate piping of the traverses located in the segment to take place. In other words, a coolant supply line can be connected to the first roller device, the coolant then flows through all adjacent roller devices and the coolant outlet is connected to the last roller device. In this way, the number of externally supplied terminals can be further reduced dramatically. Such a construction is of course also conceivable for measuring signals which can be transferred by means of a media connection between the respective roller devices, so that a single connection of a measuring bus to one side of a segment can be sufficient to be able to pick up the signals of all the roller units of the segment.

In this context, it may be necessary, however, that due to the coolant temperatures, for example in the region of the internal roll cooling or the bearing cooling, several connections must be provided within the segment, since the flow capacity and thus the capacity of the cooling medium is limited. Accordingly, over the width of the traverse away again and again new cooling medium is supplied to allow a constant cooling performance. A series connection of the individual rollers, in which the same coolant passes through all the rollers of the traverse, but can also be achieved with a corresponding dimensioning of the coolant capacity. In the field of supplying the secondary coolant, this problem does not exist, for example, so that the secondary cooling can be configured as a series connection, ie only one connection is provided at the beginning of the segment as a feed for the secondary cooling.

Accordingly, it is advantageous if the individual roller devices can be connected in series with respect to one or more of the media circuits.

On the loose side, ie on the upper frame of a segment, the traverses can be formed by the geometric configuration so that they replace at least part of the tunnel cooling chamber plates. This can be achieved, in particular, by designing the formations of the cross members in their transverse direction, that is, in the casting direction (perpendicular to the respective roller axis), such that the distances between the individual roller assemblies become small. Accordingly, the water vapor generated by the secondary cooling can be efficiently withdrawn via the respective suction devices and the corresponding blowers must not be oversized because the proportion of false air that is drawn through the gaps between the trusses, remains moderate. In this way, it is also possible to dispense with providing separate weld-in plates between the traverses, in order to form the respective cooling chamber. Also, this can be significantly increased in the maintenance process and during the assembly of respective segments, the efficiency in assembly.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1

shows a schematic perspective view of a roller device which comprises a plurality of roller elements mounted on a cross member by means of roller bearings;

FIG. 2

shows a schematic side view of a segment on the lot side, which carries seven roller devices;

FIG. 3

shows both the fixed side and the lot side with the segment FIG. 2 ;

FIG. 4

shows a schematic side detail view of the segment of FIG. 2 ;

FIG. 5

shows a schematic perspective view of a juxtaposition of several roller devices from the side facing away from the slab of the crosshead of view;

FIG. 6

shows a schematic sectional side view through a juxtaposition of roller devices according to FIG. 5 ;

FIG. 7

shows a sectional view through a roller device according to FIG. 1 ;

FIG. 8

schematically shows a layout for a roller internal cooling;

FIG. 9

schematically shows a layout for a center storage cooling;

FIG. 10

schematically shows a secondary cooling in a first embodiment with an external supply;

FIG. 11

shows schematically a secondary cooling in a second embodiment in which the supply line is guided in the trusses;

FIG. 12

schematically shows a secondary cooling with two different feeds to control the application width.

DETAILED DESCRIPTION OF THE FIGURES

Hereinafter, the present disclosure will be described in more detail based on the drawings of the figures. Here are the same elements provided in the figures with the same reference numerals and partly omitted repeated description of the respective elements.

FIG. 1 shows a schematic perspective view of a roller device 1, which comprises three roller elements 10, which are each mounted on roller bearings 20, 22. In this case, two roller bearings 22 are provided on the respective outer sides of the roller device 1 and roller bearings 20 are provided as a center bearing. The roller bearings 20, 22 are connected to a traverse 30, so that the roller elements 10, the roller bearings 20, 22 and the traverse 30 result in a module. The cross member 30 extends in the direction of the roller axes of the roller elements 10. This modular roller device 1 can in the in FIG. 1 be pre-assembled and pre-adjusted, so that the roller device 1 can be installed as a module in a higher-level machine unit, for example, a segment of a casting plant.

The traverse 30 includes at its end face 32 a media port 40, which provided with in Traverse 30 line means for a first media circuit for cooling the roller bearings 20, 22, a second medium circuit for cooling the internal elements 10, and a third medium circuit for supplying lubricants the roller bearings 20, 22 communicates. On the opposite end face 32 of the traverse 30, such a media connection 40 is also provided. Depending on the training can be provided on the one hand, the respective inflow for the cooling media of the cooling circuits and on the opposite side of the respective outflow for the cooling media, or on one side of the traverse inflow and outflow are provided for a portion of the traverse, and on on the other side, the respective inflows and outflows are provided for the other area of the traverse.

Another media connection 42 communicates with the conduit provided in the traverse for feeding the water, which serves as a cooling medium for the secondary cooling. For the secondary cooling water is provided from provided on the traverse 30 nozzles 50 on the slab to achieve a cooling of the slab here. The media port 42 connected to the conduit communicates for the secondary cooling medium, in this embodiment, on a longitudinal side 34 of the traverse is provided. In another embodiment, the media port 42 may also be used as a port for a bearing cooling or a roller internal cooling. This depends, inter alia, on the layout of the running in the crossbar 30 line means.

Another media connection 44, which is pronounced in the form of a data bus, is provided on a longitudinal side 34 of the traverse 30. Sensors for measuring different operating parameters are provided in the roller device 1, for example for measuring the coolant temperatures at different locations in the roller device, for measuring the bearing forces, the bearing temperature, the strand temperature, the flow rates, the pressures, the humidity, etc. Furthermore, switching devices can also be used be provided for switching on and off, for example, different sections of the secondary cooling. Via the media connection 44, the corresponding signals of the sensors and corresponding switching commands can be transmitted, as well as the power supply for the sensors and the switches are made.

The different media, such as the coolant of the first cooling circuit for storage cooling, the coolant for the second cooling circuit for cooling the roller elements 10, the water of the third circuit for secondary cooling of the slab, the lubricant for lubricating the bearings 20, 22, hydraulic media or compressed air media for hydraulic or pneumatic controls, as well as the individual data lines, switching lines, sensor lines and power supplies for located in the roller device 1 sensors and switching elements are all performed within the traverse 30 in the illustrated embodiment. This is achieved, for example, by introducing corresponding deep hole bores into the full material of the traverse as a conduit, in order to lay signal lines through these deep hole bores. In order to be able to bring in the deep hole drillings with large truss widths, the holes can also be introduced from two sides. The liquid and gaseous media, such as the cooling media of the roller bearing cooling circuit and the roller inner cooling circuit can also in deep hole be guided within the traverse 30. The lubricants can be performed in such deep wells.

In an alternative embodiment, the conduit means for the media are guided in a media channel milled into the full truss material, which is closed with a lid. The provision of a milled coolant channel, which is closed with a lid, for example, has the advantage that the coolant channel can be easily opened for maintenance purposes and can be cleaned accordingly. This is not so easy with a deep hole drilling. The signal lines, control lines and power supply can be easily inserted into such milled channels. The milled media channels also allow easy access to the individual sensor positions.

The channels for lubricant which is supplied to the roller bearings 20, 22, may also be formed as a deep hole or as a hole in the traverse milled channels, which are provided with a lid. It is expediently provided for each of the roller bearings 20, 22 each have their own lubricant channel, so that the lubricant, for example, an oil-air mixture, which is supplied from a lubricant distributor, each individually to the individual roller bearings 20, 22 can be distributed.

Although in the in FIG. 1 shown embodiment of the roller device 1 all media are conducted in line means within the Traverse, it is of course also possible to lead only a portion of the media in line means within the Traverse and some of the media, as known from the prior art, outside of the Traverse too to lead. Among other things, the decision on this is due to the actually desired design of the traverse, in particular its volume. It goes without saying that in a traverse relatively small volume only a limited number of media channels can be introduced. In the context of the present disclosure, however, also conduit means which are guided along the traverse and are fixedly connected to it, are to be regarded as being "in the traverse". It will be Accordingly, the conduit means considered as belonging to Traverse. For example, if a conduit means provided in the form of a guided along the traverse and fixedly connected to this channel, this conduit means is considered to be located in the Traverse. Also, a guided along the traverse and firmly connected to this media line, such as a control line for the transmission of electrical or hydraulic control signals is considered to be located in the Traverse.

Essential in this context is that either conduit means are accommodated for at least three different media in the Traverse, so for example channels for the coolant for storage cooling, channels for the coolant for roller cooling and holes for the lubricant supply, or at least one conduit means for "new media" , Thus, for example, a cooling medium for a roller internal cooling, a cooling medium for a secondary cooling (eg single or two-fluid cooling), a hydraulic medium for a hydraulic control line, a compressed air medium for a pneumatic control line, a line medium for an electrical power supply, a line medium for electrical control signals, a line medium for electrical measuring signals, a line medium for optical measuring signals, or an electrical or optical bus system are provided in the Traverse.

Accordingly, a large part of the media, which were previously supplied via separate pipelines from the outside, is now guided through corresponding channels and bores in the traverse 30 to their respective destination. This has advantages in the assembly of the roller device 1, since not so many steps for installation of the roller device 1 are necessary because they can be installed as a module. By installing as a module, in particular as a completely pre-assembled, pre-tested and aligned module, only the respective media feeds must be connected to the media connections provided on the module after attachment of the module to the scaffold. The corresponding coupling can be automatically provided already when placing the truss on the scaffold. This can also be done via connectors, for example Plug, coupling and coupling elements or similar easily connected devices happen.

On the other hand, the individual feeds of the media in the traverse are better protected against mechanical damage, breakthroughs and other disturbances that can occur during operation of a roller device. This significantly increases the reliability. In addition, the module can be tested and adjusted before installation.

Depending on the particular media used and depending on the respective further application of the respective roller device 1, the corresponding terminals 40, 42 and 44 may be arranged on the cross member 30 in different positions. In the FIG. 1 shown by way of example is advantageous if individual roller devices 1 in the in FIG. 5 schematically shown when mounting in a higher-level machine unit, for example, in a segment, butt-to-joint or cross-member 30 are attached to crossbar 30 to each other to form a corresponding segment. In this case, as described below in the FIG. 5 embodiment shown again in detail, an arrangement of at least the terminals 42 for the secondary cooling medium and the terminals 44 for the data bus on the longitudinal sides 34 of the truss 30 advantageous. As a result, a connection between the respective media circuits can be achieved virtually automatically when the individual traverses are pushed together. In other words, with respect to the juxtaposed traverses for some conduit means, it is entirely possible to dispense with separate cabling or casing work. Simply by joining the respective trusses together, the respective connection of the conduit means is achieved via the corresponding media connections. In this way, an even more efficient assembly can be achieved and the connections or connections between the individual media lines in the respective trusses are arranged in a secure position protected between the trusses.

The individual media connections are in this embodiment according to a kind of series connection. Such a series connection is completely problem-free, for example in the case of a bus line, since a very large number of signals can be transported on the same bus. In the secondary cooling medium, a series connection is likewise possible without problems, since the secondary cooling medium does not substantially heat up along the casting direction and accordingly a continuous flow of secondary cooling medium from the first to the last roll device of a segment is easily feasible.

With regard to the cooling of the roller bearings 20, 22 and the cooling of the respective roller elements 10, such a series connection of roller devices 1 may also be possible. However, it should be noted here that a considerable amount of heat has to be dissipated via the cooling liquid. Accordingly, it can happen in a series connection that for the last roller devices in the corresponding series circuit possibly due to the already advanced heating of the cooling medium is no longer sufficient cooling capacity available. Accordingly, in the example of the FIG. 1 the media connection 40, which is provided inter alia for flowing through the cooling medium for the roller bearings 20, 22 and the cooling medium for the internal cooling of the roller elements 10, provided in the form of provided on the end face 32 connection, so that each roller device 1 via a separate coolant supply for this primary cooling circuits has to provide sufficient cooling capacity for each roller device can.

Furthermore, it makes sense to deliver each of the lubricant distributors coming lubricant supply in each case per roller device 1 separately to each addressed roller bearings 20, 22. Accordingly, in the in FIG. 1 shown embodiment, the connections for the lubricant distribution placed on the end face 32 of the crossbar 30.

Here, however, any other meaningful combinations and positions for the respective media connection of the media to be supplied and removed can be found on the cross member 30, which can also take into account other considerations.

For example, it is also conceivable to provide corresponding plug-in and fluid connections not only in the end sections of the cross-member 30 on the longitudinal side 34, but these can of course also be provided in the region of the inner cross-section, for example at the reference numeral 36. Even in such a case, by simply pushing the trusses 30 together when mounting them in a larger unit, the respective connections and couplings can be virtually automatically connected to one another.

In another context, it may be advisable to put individual connections on the back 38 of the traverse 30, that is, the side facing away from the slab 30, in order to achieve both an advantageous layout of the respective connections in the assembly context, as well as, for example, shorter To make channels or deep holes within the traverse 30 must. If a medium is supplied, for example, in the middle region of the traverse 30 from the rear side 38, a halving of the respective necessary route lengths of the respective media channels can result.

FIG. 2 shows a schematic side view of a portion of a segment 100, wherein in the figure, the lot side of the segment is shown. A corresponding complementary device is provided on the fixed side, in which case also correspondingly seven roller devices are provided. This is for example also in FIG. 3 shown in which the loose side and the fixed side of the segment 100 is shown.

The segment 100 has a segmental frame 110, on which seven roller devices 1, the one in FIG. 1 shown roller device 1 are similar, are mounted. The respective media feeds to the media port 40 are in the in the FIG. 2 shown state of the segment 100 is not yet connected via the corresponding plug or couplings. The further media connections are placed on the rear side 38 of the respective roller device 1 so that they run within the segmental frame 110.

The individual roller devices 1 are attached to the segment frame 110 in each case as a complete module. In other words, the individual roller devices 1 do not have to be assembled in their individual parts on the segmental frame 110, but a preassembled roller device 1 comprising a traverse 30 and roller elements 10 preassembled thereon by means of the roller bearings 20, 22 can be mounted directly as a module on the segmental frame 110 , After assembly of the roller devices 1 on the segment scaffold 110, only a connection of the respective media supply lines and media outlets to the coupling devices provided for this purpose has to be carried out.

In particular, the respective segment 100 can be constructed by fastening the roller devices 1 to the respective segmental framework 110 by bolting and / or screwing, whereby some of the media lines are already coupled to the segmental framework 110 by placing the crossbar. Other media lines are connected to the respective roller devices 1 after placement by means of plug and coupling connections. Accordingly, a detailed separate external piping or cabling of the trusses is eliminated. Of course, the piping and wiring of the segment scaffolding itself must still be executed and be present.

The proposed integrated trusses can now also castors with small casting radii, for example 4000 to 5000 mm form, the rollers and small roll diameter, for example, 120 mm to 180 mm, allow. Due to the simple coupling of the media from the back of the trusses or from an end face of the trusses from a connection of the media can be achieved even at these small radii. The small radii were previously not possible because accessibility to weld the respective media feeds was not given.

An advantage of the design of the trusses in the proposed form is that by placing the trusses on the segment frame support bars can be omitted in the segment frame, as these are then formed by the traverse. Accordingly, in the segment frame every 2nd or 3rd

Support omitted, making the segment scaffolds can be made easier.

A possibly damaged roller device 1 within a segment 100 can also be exchanged relatively easily and quickly in this way, since here too only the respective coupling and coupling connections have to be removed and the modular roller device needs to be exchanged. The actual replacement of the roller device typically takes place after the entire segment has been replaced in the respective cast strand. The replacement of the roller device then takes place accordingly in the segment workshop.

Furthermore, the so modular roller assemblies 1 can be kept in stock and replaced quickly and efficiently if necessary. In addition, the error rate during mounting is lower, since the roller devices are already self-contained systems that need only be connected to the appropriate coupling and coupling devices.

The reliability of the system and the efficiency of maintenance is further increased by the fact that each roller device 1 as a complete module, which primary cooling circuit, lubricant circuit, secondary cooling and data line devices can be completely assembled, pre-tested and pre-installed before installation. In particular, the Rollenplanlage can already be set in the module state, so that alignment and adjustment work when installing the respective roller device 1 in the segment frame 110 can be reduced to a minimum.

From the proposed construction further results that the reliability of each roller device can be significantly increased, since a separate piping can be completely or largely omitted, as well as a separate wiring. In particular, all media and data lines are routed within the traverse, which is a self-contained unit, especially when milled from a solid material. As a result, the risk of elongation fractures in a separate piping be reduced due to different thermal expansion coefficients of the different components, since the individual channels and deep holes are provided in the quasi-monolithic traverse 30.

FIG. 4 schematically shows a side view of a segment 100, wherein only a single roller device 1 is visible, which has three roller elements 10 which are mounted on the respective roller bearings 20, 22. Good to see the secondary cooling with the nozzles 50, which across the width, indicated by the fan beam, can apply cooling medium to the slab. By means provided in the Traverse 30 switching valves can be switched on and off individual sections of the secondary cooling.

The provided on the back 38 of the traverse 30 media ports 42 and 44 are indicated in this semi-sectional view. Furthermore, it follows that the feeding of the cooling medium for the internal roll cooling of the cross member 30 in the roller elements 10 via connected to the cross member lateral feeds 12 through the lid of the roller bearings is carried out.

In FIG. 5 is shown a further segment 100 ', in which individual roller devices 1 abut each other in such a shock-to-butt that the trusses 30 rest on longitudinal side sections 34 on the adjacent traverse. In this way it follows immediately that the media connections 42 for the cooling medium connect to one another in such a way that a flow through all the roller devices 1 with secondary medium is possible without the need for additional external piping. The same is the case with respect to the electrical data bus, in which case the media connections 44 are likewise provided on a longitudinal side 34 such that an automatic electrical connection between the respective data bus connections 44 is made when two roller devices 1 are pushed together.

On the back 38 of the crossbar 30 is in FIG. 5 to recognize a milled coolant passage 52. By mounting the trusses 30 to the segment scaffold 110, which in FIG. 5 not shown, or by providing a separate Cover, which covers the milled coolant channel 52, here can be provided a simple accessible and easy to maintain coolant channel that runs protected within the crossbar 30, but can be easily maintained by opening the lid. The coolant passage 52 shown is the conduit for conducting the storage cooling medium. In principle, however, such a channel 52 cut into the full material can also be designed to accommodate any other medium, in particular also for receiving electrical or hydraulic media lines.

FIG. 5 also shows the formation of the roof of a tunnel cooling chamber with the cross-beams 30 running transversely, wherein the intermediate spaces 60 between the respective roller devices 1, or of these traverses 30, are filled by means of an insert plate 62, so that here virtually a closed ceiling the lot side of the segment is present. In this way, the water vapor arising in the tunnel cooling chamber can be efficiently discharged without the need for an oversized fan, which would have to deal with large amounts of false air.

As an alternative to the insert plates 62, which otherwise replace the otherwise provided on the segment weld plates, however, the cross member 30 itself can be designed so that it connects over the entire casting width away so closely to the adjacent cross member that a quasi-continuous cooling chamber roof is formed , For this purpose, the traverse in its transverse direction, ie in the casting direction, must be so expanded and shaped that it forms a largely continuous structure with a respective adjacent traverse.

FIG. 6 shows the segment section of FIG. 5 Once again in a schematic sectional view, from which the conclusion of the interstices 60 between the individual trusses 30 by means of the insert plates 62 results clearly. In this way, a tunnel cooling chamber can be efficiently produced. As already shown, however, the crossmember 30 can also be formed in the casting direction in such a way that it is possible to dispense with the inserts 62, since the individual crossbeams abut each other largely without gaps.

FIG. 7 shows a sectional view through a roller device 1 in the region of a roller bearing 20. The traverse 30 is also shown in sectional view. In the Traverse three line means 310, 320 and 330 are provided, which are introduced into the full material of the crossbar 30 as deep holes. The conduit means 310, 320, 330 serve in the embodiment shown for the passage of cooling media and lubricants. The conduit means 310 serves to guide lubricants for the roller bearings 20. The conduit means 320 transports the cooling medium for the roller internal cooling, the conduit medium 330, the cooling medium for the cooling of the roller bearings 20th

In the traverse 30, a conduit means 340 in the form of a rearwardly open channel, which is milled into the full material of the traverse 30, further provided. In the channel hydraulic control line 342 is inserted. Furthermore, in the traverse 30, a conduit 350 is provided in the form of a channel extending along the traverse 30 and firmly connected thereto, in which a bus system 352 extends.

Correspondingly, conduit means 310, 320, 330, 340, 350 are provided in the traverse 30 for at least three different media.

FIG. 8 schematically shows the layout of the flows of the cooling medium for a roller internal cooling with separate inlet for each truss 30. In this case, the cooling medium is fed via a manifold 400 and the associated media port 40 into the corresponding conduit means in the cross member 30. After the cooling medium has flowed through the rollers 10, it is picked up and discharged by a distributor 420 arranged on the opposite side. Accordingly, it is a series connection of the individual roller devices.

FIG. 9 indicates one FIG. 8 analogous example of the cooling for the roller bearings 20, in particular the center bearing 20. The cooling medium is thereby fed back via a manifold 410 in the respective traverses 30 and then on the in the Traverse 30 provided conduit means transported to the central bearings 20 and then passed over the conduit means to the drain manifold 420.

FIG. 10 shows a schematic arrangement of a distribution of the cooling medium for a secondary cooling. The layout essentially corresponds to that in the FIGS. 8 and 9 in fact, the cooling medium for the secondary cooling is fed to the traverses 30 via a distributor 410 and then discharged via the secondary cooling nozzles 50.

FIG. 11 shows a variant of the secondary cooling, here the trusses 30 are arranged so that they abut each other directly and conduit means with media ports 42 according to the in FIG. 5 have shown media ports 42. Accordingly, it is achieved by the abutting arrangement of the trusses 30 that the inlet 410 'is formed within the trusses. The individual conduit means for distributing the secondary cooling medium branch off correspondingly from this inlet 410 '. In this embodiment, the secondary coolant is applied across the entire width of the crosshead.

In FIG. 12 is one of the FIG. 11 related embodiment, in which a first 410 'and a second 410 "inlet for the secondary cooling medium are provided, wherein the first feed supplies coolant to the central nozzle 50' and the second inlet supplies coolant to the outer nozzles 50. In this way to control the distribution of the secondary coolant targeted.

LIST OF REFERENCE NUMBERS

1

roller device

10

roller element

12

feed

20

center support

22

external storage

30

traverse

32

Front side of the crossbar

34

Long side of the traverse

36

Center area of the traverse

38

Rear of the crossbeam

310, 320, 330

Conduit as deep hole drilling

340

Conductor as milled channel

342

hydraulic control line

350

Conduit as a patched channel

352

bus system

40, 42, 44

media connections

400

distributor

410, 410 ', 410 "

distributor

420

distributor

50, 50 '

Nozzle of secondary cooling

52

Canal in the Traverse

60

gap

62

use sheet

100

segment

110

segment structure

Claims (20)

1. Roller device (1) comprising a cross member (30) and at least one roller element (10) mounted on the cross member (30) by way of roller bearings (20, 22),
   characterised in that
   at least one duct means (310, 320, 330, 340, 350) for conducting at least one medium is provided in the cross member (30) and the roller device is provided for formation of a stripguiding segment (100) of a casting machine, wherein the roller device is installable as a preassembled module in a frame of a casting machine, preferably in a segment frame.
2. Roller device according to claim 1, wherein the at least one duct means is provided for conducting at least one of the following media: coolant for roller internal cooling, coolant for secondary cooling, hydraulic medium for a hydraulic control line, compressed air medium for a pneumatic control line, line medium for an electrical energy supply, line medium for electrical control signals, line medium for electrical measurement signals, line medium for optical measurement signals, or electrical or optical bus system.
3. Roller device according to one of claims 1 and 2, wherein additional duct means for conducting a coolant for bearing cooling and/or a lubricant for lubrication of the roller bearings (20, 22) are provided in the cross member (20).
4. Roller device according to any one of the preceding claims, wherein duct means for at least three different media are provided in the cross member.
5. Roller device (1) according to any one of the preceding claims, wherein at least one duct means in the form of a bore in the cross member (30) is provided, particularly a deep-hole bore, in the form of a channel (52), which is closable by at least one cover, in the cross member (30), in the form of a re-closable channel, in the form of an open channel, in the form of a channel closed by silicon, in the form of a media guide extending along the cross member and fixedly connected therewith and/or in the form of at least one pipe duct laid within the cross member.
6. Roller device (1) according to any one of the preceding claims, wherein at least one media connection (40) provided at an end (32) of the cross member (30) communicates with at least one duct means.
7. Roller device (1) according to any one of the preceding claims, wherein at least one media connection (42, 44) provided at a longitudinal side (36) of the cross member (30) communicates with at least one duct means.
8. Roller device (1) according to any one of the preceding claims, wherein at least one media connection (42, 44) provided on the rear side (38) of the cross member (30) communicates with at least one duct means.
9. Roller device (1) according to any one of the preceding claims, wherein the media connections (40, 42, 44) are constructed as plug, coupling or coupler elements, in particular as a hybrid plug, a water quick-connection plate with area seal, a connecting pipe with O-rings at both ends or a data bus plug.
10. Roller device (1) according to claim 9, wherein at least two media communicate with the cross member by way of a single plug element, coupling element or coupler element.
11. Roller device (1) according to any one of the preceding claims, wherein a media connection is so provided at a longitudinal side (34) of the cross member (30) that it can communicate with a corresponding media connection (42, 44) in the cross member of an adjacent roller device (1) and, in particular, enables direct coupling of the duct devices, which correspond with the media connection, in the two cross members.
12. Roller device (1) according to any one of the preceding claims, wherein at least one spray nozzle (50), which communicates with a duct means, for spraying a secondary coolant onto a slab is provided at the cross member (30), wherein the at least one nozzle is provided at, in particular, a longitudinal side (34) of the cross member.
13. Roller device according to any one of the preceding claims, wherein duct means for guidance of signal lines for different measuring tasks, particularly measurement of bearing force, bearing temperature, strip temperature, coolant temperature, throughflow quantities, pressures or moisture, are provided in the cross member.
14. Roller device (1) according to any one of the preceding claims, characterised in that the cross member (30) has an extension in casting direction of such a kind that together with an adjacent cross member of an adjacent roller device it forms a cooling chamber roof and is preferably flush in substantially gap-free manner with the cross member of the adjacent roller device.
15. Roller device according to any one of the preceding claims, wherein the roller device is preassembled, tested with respect to function and aligned prior to final mounting in the segment.
16. Roller device according to any one of the preceding claims, wherein the roller diameter of the roller elements is 120 millimetres to 180 millimetres.
17. Segment (100), particularly for a casting machine, comprising a segment frame (110), characterised in that at least two roller devices according to any one of the preceding claims are provided at the segment frame.
18. Segment according to claim 17, wherein plug, coupling or coupler elements for the feed of media to the roller device are provided.
19. Segment according to claim 17 or 18, wherein the casting radius formed by the segment is up to 4,000 millimetres, particularly 3,000 millimetres to 4,000 millimetres.
20. Segment according to any one of claims 17 to 19, wherein fewer segment cross members are arranged in the segment frame than roller devices are provided.

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