DE102011081467A1 - roller device - Google Patents

Abstract

The invention relates to a roller device (1), in particular for forming a strand-guiding segment (100) of a casting machine, comprising at least one roller element (10) mounted via roller bearings (20, 22), wherein two roller bearings have a web (FIG. 30) are interconnected.

Description

Technical area

The present invention relates to a roller device, in particular for forming a strand-guiding segment of a casting machine, comprising at least one roller element mounted on roller bearings.

State of the art

Roller devices with roller elements mounted on roller bearings are known.

From the DE 26 37 179 is a strand guide for a continuous casting known, wherein the respective rollers supporting bearing housings are each cooled by means of a coolant. The coolant is supplied via separate pipes.

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.

A disadvantage of the previously known solutions, which use a coolant supply via separate pipes, is that these pipes are prone to disturbances due to the high temperature load in casting machines and the risk of breakthroughs in a special way.

If individual segments have to be repaired or a regular exchange of the respective roller devices takes place, these prior art roller devices must each be solved by separate media feeds, for example pipelines, for each roller element or for each roller bearing. This keeps repair times, maintenance costs and plant downtime 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 and the reliability of roller devices, in particular in casting machines.

The object is achieved by a roller device with the features of claim 1. Advantageously, developments of the invention are specified in the subclaims.

definitions

The term "segment" means a structural unit in a strand guiding device. A segment consists of an upper frame associated with the upper side of the casting strand and a lower frame associated with the lower side of the casting strand strand. The upper frame and the lower frame each carry on their sides facing the cast strand preferably a plurality of roller devices between which the cast strand is guided.

The term "strand guiding device" refers to the downstream of the mold part of a continuous casting. After leaving the mold, the cast strand, which is generally still liquid on the inside, is first supported by the strand guide device and deflected into the horizontal. The strand guiding device can be constructed from individual segments.

The term "secondary cooling" means the cooling of the casting strand during its passage through the strand guiding device by spraying a cooling medium.

According to claim 1, a roller device is provided, in particular for forming a strand-guiding segment of a casting machine. The roller device comprises at least one roller element mounted on roller bearings. According to the invention, two roller bearings are connected to one another via a web comprising a conduit means for a medium.

Several such roller devices can be assembled, for example, to strand guides of casting machines, in particular to complete casting sheets or to individual segments, or be designed as a driving rollers, transport rollers or straightening rollers.

By connecting the roller bearings via a web, which comprises at least one conduit means for a medium, it can be achieved that a separate supply of roller bearings with a medium, for example a cooling medium for cooling the roller bearings, a cooling medium for cooling the rollers and / or a lubricant for lubricating the roller bearings is no longer necessary. The respective medium must rather be fed only once per roller device and - for example, in the case of a cooling medium - are also derived only once. The distribution of the respective medium on the different roller bearings and roller elements is then achieved via the conduit means provided in the web or webs. In other words, the reliability of a system can be increased with the proposed roller device, since the roller bearings no longer need to be individually supplied with media. Furthermore, the system availability can be increased as a result, since the number of media connections to be connected is significantly reduced compared with conventional roller devices in the case of a possible replacement of a roller device, and the replacement can be correspondingly faster and easier.

By laying the conduit means in the respective web between the roller bearings, the conduit means are also better protected against the conditions prevailing in a casting machine, especially against high temperatures and mechanical stress, as if they had to be performed outside the web individually to the roller bearings. In this way, a higher reliability and availability of the system is achieved. Furthermore, during repair work additional assembly operations for the connection of separate pipes, for example, for the supply and discharge of the cooling medium to each roller bearing.

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

Preferably, the web comprises conduit means for at least two different media. By including conduit means for at least two media, and advantageously for a plurality or all of the media necessary to operate the reel assembly, in the web, the reliability and availability of a corresponding casting machine can be further increased since all of the conduit means received in the web to receive the advantages described above.

Conductive means are advantageously provided for conducting at least one of the following media: a cooling medium for cooling 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 substance 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 conducting medium for electrical measuring signals, a conducting medium for optical measuring signals, or an electrical and / or optical bus system.

The roller bearings preferably have connection sections for direct connection to a segment frame. In this way, a simple connection to the segment frame can be achieved, since a secure connection can take place in particular only via the connection sections. As a result, only relatively narrow shots on the segment frame are necessary, which only need to accommodate the respective connection sections of the roller bearings. These attachment portions typically have dimensions that correspond to the cross section of the roller bearings.

In a particularly preferred development, the web extends between opposing end faces of two roller bearings. In this case, the web can be arranged at a distance from the attachment sections at the respective end faces, in particular between the attachment sections and a plane defined by the circumference of the roller elements. In this way, a space-saving arrangement of the web is achieved and the connection of the roller device to a segment frame is simplified in that only the connecting portions of the roller bearings come into contact with the segment frame, but not the web. In other words, the web is at a distance from the plane connecting the connecting sections, so that the connecting sections-more or less like posts-protrude beyond the web.

In order to achieve an advantageous space utilization and to form a flat-forming roller device, the web preferably extends parallel to the axis of the roller element.

In a further preferred embodiment, the web is welded to the roller bearings, screwed or glued and / or flanged to the roller bearings. Thus, a cost-effective production of the roller device is made possible, since the web is initially inexpensive to produce as a separate component and then can be connected to the roller bearings accordingly. In this way, it is also possible to select the material of the web and the material of the roller bearings of the respective application, so that a cost saving can be achieved here as well.

In a further preferred embodiment, at least one media guide is also provided in the roller bearings, wherein the at least one media guide with at least one Conductor of a bridge communicates. Preferably, a conduit means of a first land communicates with a conduit means of a second land via a media guide in a roller bearing. By communicating with one another conduit means and media guides, a flexible and efficient passage or supply of the respective media to the roller bearings and other components across the width of the roller device can be achieved. In particular, in this way all components of the roller device can be supplied with the respective media via a single media connection of the roller device, since the distribution of the media within the roller device takes place via the web or webs. Accordingly, the supply of the media to the individual components and the connection of the respective media supply lines to the roller device can be substantially simplified.

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, the conduit means for the media in the roller means in the form of a bore in the web, in particular a deep hole, in the form of, for example, at least one lid closable channel in the web, in the form of an open channel, in the form of a sealed channel with silicone , and / or provided in the form of at least one laid within the web pipeline. A simple and reliable production of the respective media webs can be achieved.

Furthermore, the roller device can be pre-assembled in the segment prior to final assembly, tested for function and aligned. Thus, the roller device can be constructed as a complete module and the corresponding guided in the web or the webs 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.

A quick and reliable installation of the roller device can be achieved in that at least one provided at an end face of a roller bearing media connection communicates with at least one conduit means.

In addition or as an alternative, at least one media connection provided on one longitudinal side and / or one rear side of the web can communicate with at least one conduit means.

In order to achieve a correspondingly fast assembly and easy maintenance, the respective media connections, which communicate with the conduit means in the webs, are provided on one end side, longitudinal side or rear side of the web. 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 only by simply connecting coupling devices to connect the corresponding media connections with the roller device. The media connections of the webs can be designed so that the media connections are already automatically coupled by placing the roller device on a segment framework with the respective supply lines.

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 a further preferred embodiment, a media connection is provided on a longitudinal side of the roller device in such a way that it can communicate with a corresponding media connection of an adjacent roller device and in particular allows a direct coupling of the line devices corresponding to the media connection in the two roller devices. By pushing the two roller devices together, a coupling of the respective media connections can already be achieved in this way. Thus, for example, a cooling circuit can be produced continuously from a first roller unit to the last roller unit, virtually in one Series connection, without the need for a separate piping of the internal roller in the segment must 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. Thus, the number of externally supplied connections can be further reduced drastically. 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.

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

Various signal lines for different measuring tasks, such as, for example, bearing force, storage temperature, line temperature, cooling medium temperature, flow rates, pressures, moisture, etc., can be accommodated in the media supply and distribution devices within the roller device. These measurement signals can then be tapped at a central location, for example at the front, a portion of the longitudinal side or on the back of the roller device, in particular the respective web, for example via a multi-function plug, an intelligent terminal, a data bus connection or in another efficient manner without having to route signal lines to the respective sensors outside the bridge. 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. For this purpose, the webs preferably take on structural tasks in such a way that a module pre-adjusted in this way can be transported for installation in the segment and can be installed in it without the module being substantially misadjusted again. 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.

Brief description of the figures

Preferred further embodiments and aspects of the present invention will become more apparent from the following description of the figures.

Showing:

1 a schematic perspective view of a roller device in a first embodiment;

2 a schematic perspective view of a roller device in a second embodiment;

3 schematically shows a side view of the fixed side and the lot side with a segment; and

4 shows a schematic side detail view of the segment of 3 ,

Description of the preferred embodiments

In the following, preferred embodiments will be described with reference to the figures. Here, the same or similar elements are denoted by the same reference numerals, and a repetitive description of these elements will be omitted partially to avoid redundancy.

1 shows a first embodiment of a roller device 1 in a schematic perspective view. The roller device 1 includes three roller elements 10 , each between roller bearings 20 . 22 are stored. There are two roller bearings 22 on the respective outer sides of the roller device 1 provided and more roller bearings 20 are intended as center bearings.

Several such roller devices can be assembled, for example, into strand guides of casting machines, in particular to entire casting sheets or to individual segments, or be designed as a drive rollers, transport rollers or straightening rollers.

Between the roller bearings 20 . 22 are webs 30 arranged, each two roller bearings 20 . 22 connect with each other. The bridges 30 include, as will be explained in more detail below, conduit means for at least one medium.

The roller bearings 20 . 22 have connection sections 24 on, which are intended for direct connection to a segment frame. The connection sections 24 Stand above the lower level of the walkways 30 In addition, so that a simple connection to the segment frame is made possible and in particular only a correspondingly narrow receptacle on the segment frame is necessary to the connecting sections 24 take.

The bridges 30 are between the opposite faces 26 the roller bearing 20 . 22 arranged and are - depending on the design - welded, glued, screwed or flanged to this. The connection of the roller bearings 20 . 22 to the footbridges 30 can be carried out so stable that the roller device 1 is formed as a module, which can already be completely pre-adjusted and pre-tested, so that the roller device 1 as a module in a higher-level machine unit, for example, a segment of a casting plant, can be installed. The bridges 30 are then so stably designed that the module can be transported in the aligned orientation and can be installed without the adjustment is substantially lost. The assembly of the roller device 1 in the segment frame is significantly simplified by the modular design.

The roller device 1 includes at one end 12 a media connection 40 who is in the dock 30 provided line means, for example, for a first medium cycle for cooling the roller bearings 20 . 22 , a second medium circuit for the internal cooling of the roller elements 10 , as well as a third medium circuit for supplying lubricants to the roller bearings 20 . 22 communicated. On the opposite end 12 the roller device 1 is also such a media connection 40 intended. Depending on the design, the respective inflow for the cooling media of the cooling circuits may be provided on one side and the respective outflow for the cooling media on the opposite side, or on one side of the roller device 1 are inflow and outflow for a section of the roller device 1 provided, and on the other hand, the respective inflows and outflows for the other area of the roller device 1 intended.

A media connection 42 , for a data bus is on a longitudinal side of the roller device 1 intended. In the roller device 1 sensors are provided for measuring different operating parameters, 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 switched on and off be provided, for example, different sections of the secondary cooling. About the media connection 42 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, so for example, 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 a circuit for secondary cooling of a slab, the lubricant for lubrication of 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 the roller device 1 located sensors and switching elements are in the embodiment shown all within the webs 30 guided. This is achieved, for example, by introducing corresponding deep hole bores into the full material of the web as a conduit means in order to lay signal lines through these deep hole bores. 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 holes within the web 30 be guided. The lubricants can be performed in such deep wells.

A compound of the conduit means of the webs 30 between one another is achieved by media guides in the roller bearings 20 are provided, via which the conduit means of the webs 30 communicate with each other. In this way, a continuous supply of the roller device 1 with the respective media across the entire width of the roller device 1 away possible. In particular, via the media connections 40 . 42 a supply of the entire roller device 1 be achieved with the respective media.

In an alternative embodiment, the conduit means for the media in one in the full material of the webs 30 milled media channel out, which is closed with a lid. Providing a milled Coolant media 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 the lubricant which the roller bearings 20 . 22 is supplied, may also be formed as a deep hole or as milled channels, which are provided with a lid. It is expedient for each of the roller bearings 20 . 22 each provided a separate 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 1 shown embodiment of the roller device 1 it is of course also possible to guide only a portion of the media in conduit means within the lands and some of the media, as known in the art, from outside the roll means 1 supply. The decision on this is, among other things, the actually desired design of the webs 30 , in particular with regard to their volume. It goes without saying that in a jetty 30 relatively small volume / cross-section only a limited number of media channels can be introduced.

In the present case, but also conduit means along the bars 30 be guided and firmly connected with these, as from the footbridge 30 to be considered. In this case, the line means as the bridge 30 belonging to. If, for example, a conduit means in the form of a along the web 30 guided and provided with this permanently connected channel, this conduit means than from the bridge 30 includes viewed. Also one along the jetty 30 guided and permanently connected to this media line, such as a control line for the transmission of electrical or hydraulic control signals, is called the bridge 30 includes viewed.

The media transported via the conduit means include a cooling medium for cooling the roller bearings 20 . 22 , a cooling medium for the internal cooling of the rollers, a lubricant for lubricating the roller bearings 20 . 22 , a cooling medium for a secondary cooling, a hydraulic medium for a hydraulic control line, a compressed air medium for a pneumatic control line, a conductor medium for an electrical power supply, a conductive medium for electrical control signals, a conducting medium for electrical measuring signals, a conducting medium for optical measuring signals, or an electric and / or optical bus system.

Accordingly, a large part of the media, which were previously supplied via separate pipes and control lines from the outside, now through corresponding channels and holes in the webs 30 to their respective destination. This has advantages in the assembly of the roller device 1 , because not so many steps to install the roller device 1 necessary because they can be installed as a module. Due to the installation as a module, in particular as a completely pre-assembled, pre-tested and aligned module, only the respective media supply lines must be connected to the media connections provided on the module after the module has been attached to the segmental framework. The corresponding coupling can already when placing the roller device 1 be automatically provided on the scaffolding. This can be done in particular via connectors, such as plugs, coupling and coupling elements or similar devices to be connected easily.

On the other hand, the individual feeders of the media in the webs 30 better protected against mechanical damage, breakthroughs and other disturbances that occur during operation of a roller device 1 may occur. This significantly increases the reliability.

In 2 is another embodiment of the roller device 1 shown. This embodiment is substantially similar to that in FIG 1 shown, but additionally has devices for secondary cooling. Another media connection 44 is intended to be with those in the roller device 1 provided line means for feeding the water, which serves as a cooling medium for the secondary cooling to communicate. For secondary cooling, water is released from the bars 30 provided nozzles 50 applied to the slab to achieve a cooling of the slab here. The media connection 44 communicating with the secondary cooling medium conducting means is on one longitudinal side of the rolling means in this embodiment 1 intended. In another embodiment, the media port 44 can also be used as a connection for a bearing cooling or an internal roller cooling.

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

Depending on the media used in each case as well as depending on the respective further application of the respective roller device 1 can make the appropriate connections 40 . 42 and 44 on the roller device 30 be arranged in different positions. In the 1 The arrangement shown by way of example is advantageous if individual roller devices 1 when installed in a higher-level machine unit, for example, in a segment, butt-to-joint are joined together to form a corresponding segment. In this case, an arrangement of at least the terminals 44 for the secondary cooling medium and the connections 42 for the data bus on the long sides 34 the roller device 1 advantageous. In this way, namely, when pushing the individual roller devices 1 almost automatically a connection of the respective media circuits can be achieved with each other. In other words, with respect to the juxtaposed roller devices for some conduit means, it is entirely possible to dispense with separate cabling or casing work. Alone by the joining together of the respective roller devices 1 to each other, the respective connection of the conduit means via the corresponding media connections is achieved. In this way, an even more efficient assembly can be achieved and the connections between the individual media lines in the respective roller devices are arranged in a secure position protected between the roller devices.

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.

Regarding the cooling of the roller bearings 20 . 22 and the cooling of the respective roller elements 10 can such a series of roller devices 1 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 1 the media connection 40 Among other things, to flow through the cooling medium for the roller bearings 20 . 22 and the cooling medium for the internal cooling of the roller elements 10 is provided, in the form of the front side 12 provided connection, so that each roller device 1 has a separate coolant supply for these primary cooling circuits in order to provide sufficient cooling capacity for each individual roller device.

Furthermore, it lends itself to coming from a lubricant distributor lubricant supply per roller device 1 separately to the respectively mentioned roller bearings 20 . 22 to send. Accordingly, in the in 1 embodiment shown, the connections for the lubricant distribution on the front page 12 the roller device laid.

4 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 3 shown in which the lot side and the fixed side of the segment 100 is shown.

The segment 100 has a segment framework 110 on which seven roller devices 1 that the in 2 shown roller device 1 are similar, are mounted. The respective media feeds at the media connection 40 are in the in the 4 shown state of the segment 100 not yet connected via the appropriate connectors or couplings. The other media connections are on the back of the respective roller device 1 placed so that they are within the segmental framework 110 run.

The individual roller devices 1 are on the segment framework 110 each attached as a complete module. In other words, the individual role devices need 1 not in their individual parts on the segment framework 110 but it can be a pre-assembled roller device 1 directly as a module on the segment frame 110 to be assembled. After assembly of the roller devices 1 on the segment framework 110 All that needs to be done is to connect the respective media feeds and media derivations to it provided coupling devices are performed.

In particular, the respective segment 100 be constructed by the fact that the roller devices 1 at the respective segment framework 110 be fastened by bolting and / or screwing, wherein some of the media lines already by the placement of the roller device 1 on the segment framework 110 be coupled. Other media lines are after placement by means of plug and coupling connections with the respective roller devices 1 connected. Accordingly, a detailed separate external piping or cabling of the roller devices is eliminated. Of course, the piping and wiring of the segment scaffolding itself must still be executed and be present.

Due to the proposed, compact roller devices 1 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. Due to the simple coupling of the media from the back or from an end face of the roller devices, a connection of the media can be achieved even with these small radii. The small radii were previously not possible because accessibility to weld the respective media feeds was not given.

A possibly damaged roller device 1 within a segment 100 can be relatively easily and quickly replaced, since also only the respective coupling and coupling connections removed and the modular roller device needs to be replaced. 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 modular so constructed roller devices 1 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 plant and the efficiency of the maintenance is thereby further increased when each roller device 1 as a complete module, which has 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 into the segment framework 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 guided within the roller device, which is a self-contained unit, especially when it is milled out of a solid material.

LIST OF REFERENCE NUMBERS

1

 roller device

10

 roller element

12

 Front side of the roller device

20

 center support

22

 external storage

24

 connecting section

26

 face

30

 web

40, 42, 44

 media connections

50

 Nozzle of secondary cooling

100

 segment

110

 segment structure

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 2637179 [0003]
• JP 08168859 A [0004]
• EP 1355752 B1 [0005]

Claims (15)

Roller device ( 1 ), in particular for the formation of a strand-guiding segment ( 100 ) of a casting machine, comprising at least one roller bearing ( 20 . 22 ) stored roller element ( 10 ), characterized in that two roller bearings via a web comprising a conduit means for a medium ( 30 ) are interconnected. Roller device ( 1 ) according to claim 1, wherein the web ( 30 ) Comprises conduit means for at least two different media. Roller device according to claim 1 or 2, wherein conduit means are provided for conducting at least one of the following media: a cooling medium for cooling the roller bearings ( 20 . 22 ), a cooling medium for the roller internal cooling, a lubricant for lubricating the roller bearings ( 20 . 22 ), a cooling medium for a secondary cooling, a hydraulic medium for a hydraulic control line, a compressed air medium for a pneumatic control line, a conductor medium for an electrical power supply, a conductive 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. Roller device according to one of the preceding claims, wherein the roller bearings ( 20 . 22 ) Connection sections ( 24 ) for direct connection to a segment frame ( 110 ) exhibit. Roller device according to one of the preceding claims, wherein the web ( 30 ) between opposing faces ( 26 ) of two roller bearings ( 20 . 22 ). Roller device according to claim 4 and 5, wherein the web ( 30 ) of the connecting sections ( 24 ) spaced at the respective end faces ( 26 ) is arranged, in particular between the connection sections ( 24 ) and one by the scope of the rolling elements ( 10 ) defined level. Roller device according to one of the preceding claims, wherein the web ( 30 ) parallel to the axis of the roller element ( 10 ). Roller device according to one of the preceding claims, wherein the web ( 30 ) with the roller bearings ( 20 . 22 ) is welded, screwed or glued and / or flanged. Roller device according to one of the preceding claims, wherein at least one media guide in the roller bearings ( 20 . 22 ), wherein the at least one media guide with at least one conduit means of a web ( 30 ) communicates. Roller device according to claim 9, wherein a conduit means of a first web ( 30 ) with a conduit means of a second web ( 30 ) via a media guide in a roller bearing ( 20 . 22 ) communicates. Roller device ( 1 ) according to one of the preceding claims, wherein at least one conduit means in the form of a bore in the web, in particular a deep hole, in the form of a closable with at least one lid channel in the web, in the form of a reclosed channel, in the form of an open channel in shape a channel sealed with silicone, in the form of a media guide extending along the web and firmly connected thereto, and / or in the form of at least one inside the web (FIG. 30 ) laid piping is provided. Roller device ( 1 ) according to one of the preceding claims, wherein at least one on one end face ( 12 ) the role device ( 1 ) provided media connection ( 40 ) communicates with at least one conduit. Roller device ( 1 ) according to one of the preceding claims, wherein at least one on a longitudinal side and / or a rear side of the roller device ( 1 ) provided media connection ( 42 . 44 ) communicates with at least one conduit. Roller device ( 1 ) according to one of the preceding claims, wherein a media connection in such a way on a longitudinal side of the roller device ( 1 ) is provided with a corresponding media connection ( 42 . 44 ) of an adjacent roller device ( 1 ) and in particular a direct coupling of the line connections corresponding to the media connection in the two webs ( 30 ). Roller device according to one of the preceding claims, wherein the roller device is pre-assembled in the segment prior to final assembly, tested for function and aligned.

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