RU2538451C2 - Roller unit - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy and can be used in continuous casting machine. The roller unit (1) contains a cross-beam (30) and, at least, one roller element (10), supported by means of roller supports (20, 22) on the cross-beam (30). In the cross-beam the guides (310, 320, 330, 340, 350) for guiding of working mediums are provisioned. The pre-mounted roller device of modular design is built in a frame of the guiding segment of the continuous casting machine.

EFFECT: high reliability and usability of the roller device is provided.

20 cl, 12 dwg

Description

The present invention relates to a roller device that has at least one roller provided on a traverse extending in the direction of the axis of the roller. Several such roller devices can, for example, be constituted together with guiding casting machines, in particular whole radial sections or individual segments, or can be made in the form of pulling rollers, conveying rollers or straightening rollers.

Roller devices equipped with roller elements mounted on traverses are known.

A guide for the installation of continuous casting of workpieces is known from DE 2637179, in which the supporting rollers of the support housing can in each case be cooled by means of a cooling medium supplied via separate pipelines.

JP 08168859 A shows a device for cooling roller segments in a continuous casting installation, wherein the bearing bodies of the respective roller segments are provided with cooling means via separately supplied pipelines.

A guide segment is known from EP 1355752 B1, which, along with a plurality of rollers, also includes traverse elements which are used for secondary cooling of the slab.

A disadvantage of previously known solutions that use a coolant supply through separate pipelines is that these pipelines are particularly susceptible to malfunctions due to the high thermal load in the filling machines, as well as the risk of breakthroughs.

When it is necessary to repair individual segments or regular replacement of the corresponding roller devices takes place, these roller devices must in each case be connected to piping systems that must be mounted separately, which leads to a significant duration of the repair, the cost of the repair, as well as the simple installation.

Based on the prior art, the object of the present invention is to increase the degree of utilization of the installation, as well as the reliability of roller devices or, respectively, segments in filling machines.

This problem is solved using a roller device with the features of claim 1 of the claims.

Accordingly, a roller device is provided that includes a crosshead and at least one roller element supported on the crosshead by means of a roller support. In accordance with the present description, conductive means for at least three different media are provided in the traverse. Conductive means are provided, in particular, for directing a cooling medium for cooling the roller bearings, a cooling medium for cooling the rollers and a lubricant for lubricating the roller bearings.

The term "environment" in the present description, along with various cooling media and lubricating media that must be supplied to the roller device and partially removed from it, also refers to the power supply systems of sensors and switchgears, as well as data buses. In other words, the term "environment" in the present description refers to all the working tools and controls that during operation are supplied to and removed from the roller device.

It is preferable to implement a roller device equipped with such a traverse in which at least three different media can be guided by means of conductive means, i.e., for example, a cooling medium for cooling supports, a cooling medium for internal cooling of rollers, a lubricant, a cooling medium for secondary cooling, pneumatic medium for pneumatic control systems, hydraulic medium for hydraulic control systems, power supply, sensor signal transmission, etc., is that with Resp conductive means extend within the crosspiece very well protected manner and, accordingly, unlike route individual pipes provided on the outer side, contribute to a higher degree of reliability and use of the installation. In addition, during repair work, there is no need for additional installation processes to connect individual pipelines, for example, for supplying and removing cooling medium to each support.

The cooling medium for cooling the bearings, internal cooling of the rollers and / or secondary cooling may be a one-component cooling, for example water, or two-component cooling, for example a mixture of water / air. Of course, other component mixtures, also multicomponent mixtures, can also be used as a cooling medium.

Preferably, one conductive means is provided for guiding at least one of the following environments: a cooling medium for cooling the roller bearings, a cooling medium for internal cooling of the rollers, a lubricant for lubricating the roller bearings, a cooling medium for secondary cooling (for example, one-component or two-component cooling), hydraulic medium for hydraulic control line, pneumatic medium for pneumatic control line, conductive medium for supplying electric energy a conductive medium for electrical control signals, a conductive medium for electrical measurement signals, a conductive medium for optical measurement signals, or an electrical and / or optical bus system. In this way, a corresponding simplification of the supply of each medium can be achieved.

In another preferred embodiment, a roller device is provided, in particular, for forming a continuous casting guide of a segment of a casting machine, comprising a crosshead and at least one roller element supported by a roller support on the crossarm, at least one conductive means for directions of at least one of the following environments: a cooling medium for internal cooling of the rollers, a cooling medium for secondary cooling (for example, about one-component or two-component cooling), a hydraulic medium for a hydraulic control line, a pneumatic medium for a pneumatic control line, a conductive medium for supplying electric energy, a conductive medium for electrical control signals, a conductive medium for electrical measurement signals, a conductive medium for optical measurement signals or electric or optical bus system. Thanks to the direction of these “new environments” directly in the traverse, new opportunities are opening up regarding the mounting and reliability of the roller element.

In another preferred embodiment, there is provided a roller device including a crosshead and at least one roller element supported by a roller bearing on the crosshead, wherein at least one conductive means is provided in the crossarm for guiding at least one medium, and a roller device is provided for the formation of the guide continuously cast billet segment of the filling machine.

Until now, roller traverses (traverses with rollers mounted on it) have been used only in curved (radial) guide sections, and not in segments. In curvilinear guide sections, the traverse rollers must have the possibility of separate dismantling, since the dismantling of the curved guide section always leads to prolonged downtime and, at the same time, production losses. Since the supporting traverses for supporting the rollers in the curved guide section are located in the casting direction, the roller traverses have a relatively high moment of resistance (high height) for supporting the rollers, which is significantly larger than the moment of resistance of the traverse for media used in segments.

Rollers on traverses for media so far have been used only in curved guide sections of continuous casting installations, but not in their segments. For a clear distinction, the following definitions are given.

Vertical installation: all pairs of guide roller to the maximum position in which the continuously cast billet should be thoroughly hardened, are located vertically one below the other.

A continuous casting installation of radial (curvilinear) type blanks: copper plates of the molds, as well as the largest part of the pairs of rollers are geometrically located along an arc of a circle, and this arc of a circle describes an angle of approximately 90 °. In the direction of casting, pairs of straight rollers adjoin the arc of a circle, which govern the cast continuous billet and transfer it to the straight horizontal part of the guide.

Vertical installation with bending of the workpiece: a combination of the two types of installation described above, in which the mold plates and the first pairs of rollers are vertically one under the other, after which the continuously cast billet by pairs of rollers is bent into an arc of a circle. After the curvilinear part, pairs of rollers are connected again, which govern the cast continuous billet and transfer it to the straight horizontal part of the guide stand.

Curved (radial) guide section (guide for the workpiece): the curved guide section is an old type of structure that was used (and is used), for example, in vertical installations with a bend of the workpiece, while the entire share of the guide for the workpiece in the circular arc in machine-building relation assembled in a curved guide section, i.e. the number of pairs of rollers is usually about 25-45 pairs of rollers; the support of the curved guide section for rollers with roller traverses occurs by means of supporting traverses, which are located in the casting direction; when using roller traverses, these traverses for supporting the roller are made with a relatively large moment of resistance (high height, for example, in Arcelor Mittal Steel, Eisenhüttenstadt, 100 mm thick) (very rigid structure).

Segment (workpiece guide): newer design for guide stands: number of pairs of rollers max. 10 in curved part and max. 14-16 in the vertical part or in the bending part of the guide for the workpiece (in particular, with smaller diameters of the rollers); in the curved part is an increasing number of segments; supporting traverses for rollers are located in a segment under the bodies of the rollers, i.e. supporting traverses are perpendicular to the casting direction. The laying of pipelines for the roller occurs, as a rule, along the supporting traverses; the rollers are not replaced in the installation, but in the workshop for repairing segments; To do this, the entire segment is replaced. In this case, the upper frame and the lower frame of the segment form a single unit; Dismantling of segments from the workpiece guide always takes place upward.

Curved segment (workpiece guide): like the segment equipped with max. 10 pairs of rollers, and these pairs of rollers are geometrically located on a section of a circular arc.

Conductive media are preferably provided in the form of grooves, in particular deep grooves, in the traverse, in the form of channels closed by covers in the traverse and / or in the form of pipelines laid inside the traverse.

Thus, the roller device can be made in the form of a complete (fully equipped) module, and accordingly the conductive media for the media carried out in the traverse can already be fully tested and pre-adjusted in this pre-assembled state. Thus, a segment can be repaired again in a short time and at low cost. For example, a possibly damaged roller device can be easily replaced, for example, in a segment including 14 roller devices. Since the roller device is pre-mounted, pre-tested and pre-aligned, replacing the roller assembly in a segment can be done quickly. Accordingly, the complexity of repairs and repair times in a workshop for repairing segments can be reduced in comparison with traditional segments.

Preferably, the roller device can be designed so that additional conductive means are provided in the traverse for at least one other medium, in particular for directing a secondary cooling medium (one-component or two-component cooling), power supply and / or signal transmission for sensors or distribution elements . Preferably, all inlets and outlets for all media required in the roller device are routed inside the crosshead so that a complete module check can be performed, all conductive means can be placed in the crossarm in a secure manner and these modules can be easily integrated.

In order to achieve quick installation and easy maintenance, appropriate connections for media that communicate with conductive means in the crosshead are provided on the front side, longitudinal side or rear side of the crosshead. Thus, for example, it is possible to screw the roller device to the corresponding support frame of the segment and then connect the appropriate inlets and outlets to the traverse, for example, for the circulation circuits of cooling media, the circulation circuit of grease, power supply systems and sensor and switchgears only by simply connecting the coupling devices with appropriate connections for environments. In this case, the traverse can be made in such a way that the media connections, even when the traverse is installed on the segment frame, are automatically docked with the corresponding supply.

One of the effective connection devices can also be provided, for example, by means of suitable coupling elements, such as, for example, hybrid plugs, hydraulic pressure plates with flat seals, connecting pipes with round O-rings on both sides, etc., so that the connection is made inlets and outlets to the roller device can be carried out simply and reliably. Preferably, the plug, socket and coupling elements are designed so that they can simultaneously conduct at least two environments. Thus, the corresponding connection can be performed even more efficiently, since the number of coupling processes of the couplings can also be reduced.

In order to allow easy maintenance of the respective channels for the crosshead media, these channels can be provided in the form of milled channels, which, for example, are closed by a lid on the rear side of the beam, that is, the side of the beam turned away from the slab, so that for maintenance or, accordingly, cleaning is only necessary to open this cover in order to carry out maintenance of the corresponding cooling channels. But open channels or channels embedded in silicone may also be provided in which conductive means are laid. The channels open or sealed with silicone are preferably provided on the side of the beam, which is turned away from the slab, that is, the "back side" of the beam. In another preferred embodiment, there are provided longitudinally extending traverses and conductive means rigidly connected thereto.

Due to the location of the corresponding channels for the media inside the crosshead, individual pipelines and cables, which, according to the prior art, were laid outside the crossarm or, accordingly, were brought to it across the entire width of the crosshead, are no longer routed in the hazardous area between the outer supports that in this way the risk of damage during breakthroughs or, accordingly, with high heat of radiation inside the corresponding filling machine can be reduced.

In addition, the location of the channels for the media inside the crosshead also allows you to perform curved segments with small diameters of the rollers and, accordingly, a small radius of curvature of the technological axis of the casting machine, which until now, due to the many pipelines that were supposed to be supplied, was difficult and led to malfunctions, or due to lack of access to perform welding work it was generally impossible. Thanks to these traverses, casting machines can now also be made with small radii of curvature of the technological axis, for example, from 4000 to 5000 mm, while small diameters of the rollers, for example, from 120 mm to 180 mm, are also allowed for rollers.

It is also preferable when performing the traverse in the proposed embodiment that when installing the traverse on the segment frame, you can do without supporting traverses in the segment frame, since in this case they are formed by this traverse. Accordingly, in the frame of the segment, you can do without every 2nd or every 3rd support.

In addition, by laying the appropriate conductive means inside the crosshead, a significant simplification of the structure of the frame segment can be achieved, in which many, for example, seven, roller devices must be placed, since it is not necessary to provide separate piping connections for the circulating circuits of the cooling means or signal wires, or at least not to the extent previously required, when the traverses in the casting direction are connected in series.

In the devices for supplying and distributing media inside the crosshead, various signal wires can be placed for various measurement tasks, for example, the reaction of the support, temperature of the support, temperature of the continuously cast billet, temperature of the cooling medium, quantities of flowing substance, pressure, humidity, etc. These measurement signals can then act in the central point, for example, on the front side, one of the sections of the longitudinal side or on the rear side of the crosshead, for example, through a multifunctional plug, intelligent a terminal, a connection via a data bus or in another effective way, without the need to lay signal wires to the corresponding sensors outside the crosshead housing. Accordingly, here the laying of wires can be carried out more efficiently, and the corresponding signal wires are no longer in the thermally and mechanically dangerous area of the casting line.

It is also preferable in this case that the sensors of the roller device are already in a modular state, that is, before the roller device is integrated in the segment, they can be completely pre-mounted, pre-tested and pre-adjusted or, accordingly, pre-adjusted, since the roller device can be a closed system within itself. Separate conductive means for various environments can also be fully tested for performance. Thanks to the modular design and the complete performance test, installation time in the relevant segments can be significantly reduced.

In another preferred embodiment, the circulation circuit for the secondary cooling medium can also be placed in the traverse. For this purpose, water distribution chambers for nozzles in the roller line are preferably provided, and distribution valves can also be provided in the traverse or on it so that individual nozzles can be switched on and off, for example, to provide secondary cooling for various values of the continuously cast billet width.

It is preferable to provide appropriate media connections for the conductive means on the longitudinal sides of the respective traverses so that when two traverses are moved to each other, the corresponding connections for the media of adjacent traverses are connected so that the corresponding conductive means are connected to each other via media connections. Thus, for example, a circulation loop can be continuously produced from the first roller device to the last roller device, as if in series connection, without the need for making separate connections for this with pipelines inside the traverse segment. In other words, the coolant supply can be connected to the first roller device, then the coolant flows through all the parallel roller devices, and the drain of the coolant is connected to the last roller device. In this way, the number of connections that must be connected externally can be further sharply reduced. This design, of course, is also possible for measurement signals, which can be transmitted by connecting to the medium between the respective roller devices, so that a single connection of the measurement bus on one side of the segment can be sufficient to make it possible to record the signals of all roller devices of this segment.

In this regard, however, it may be necessary, in connection with the temperatures of the coolant, for example, in the field of internal cooling of the rollers or cooling of the supports, to provide several connections within the segment, since the throughput and, at the same time, the volume of the cooling medium are limited. Correspondingly, a new cooling medium is constantly supplied across the beam width to provide the possibility of constant cooling power. But the sequential inclusion of individual rollers, in which the same coolant passes through all the traverse rollers, can also be achieved with an appropriate choice of the volume of the coolant. In the area of supply of the secondary cooling means, for example, this problem does not exist, so that secondary cooling can be performed as a series connection, that is, only one connection is provided at the beginning of the segment as an input for secondary cooling.

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

On the free upper side, that is, on the upper frame of the segment, the traverses can be made in a geometric configuration so that they replace at least part of the shields of the tunnel cooling chamber. This can be achieved, in particular, due to the fact that the dimensions of the traverse in their transverse direction, that is, in the casting direction (perpendicular to the corresponding axis of the roller), are selected so that the distances between the individual roller devices are reduced. Accordingly, the water vapor generated by the secondary cooling can be effectively drawn out by means of appropriate exhaust devices, and the sizes of the respective blowers should not be chosen too large, since the proportion of by-product air that is drawn in through the gaps between the cross beams remains moderate. Thus, it is also possible to dispense with the separate welded flaps provided between the cross beams for the formation of corresponding cooling chambers. Thanks to this, the installation efficiency can also significantly increase during the maintenance process and during installation of the corresponding segments.

Brief Description of the Figures

Figure 1: shows a schematic perspective view of a roller device, which includes several roller elements mounted on one traverse by means of a roller support;

figure 2: shows a schematic side view of a segment on the free upper side on which seven roller devices are mounted;

figure 3: shows both the supporting lower side and the free upper side with the segment depicted in figure 2;

figure 4: shows a schematic side view of the segment depicted in figure 2;

5: shows a schematic perspective view of the sequential arrangement of several roller devices in the direction of view from the side of the beam facing away from the slab;

6: shows a schematic side view in section of a sequential arrangement of roller devices according to figure 5;

Fig.7: shows a cross-sectional view of the roller device shown in Fig.1;

Fig: shows a schematic layout of the internal cooling of the rollers;

Fig.9: shows a schematic layout of the cooling of the middle supports;

10: schematically shows secondary cooling in the first embodiment with an external supply;

11: schematically shows the secondary cooling in the second embodiment, in which the supply is carried out in the traverse;

12: schematically shows secondary cooling with two different inlets for controlling the application width.

Below the present description will be set forth in more detail using the figures. In this case, the same elements in the figures are provided with the same reference position, and a repeated description of the corresponding elements is partially omitted.

Figure 1 shows a schematic perspective view of a roller device 1, which includes three roller elements 10, which are each supported 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 medium supports. The roller bearings 20, 22 are connected by a traverse 30, so that the roller elements 10, the roller bearings 20, 22 and the beam 30 form one module. The yoke 30 extends in the direction of the axes of the rollers of the roller elements 10. The modular roller device 1 can be pre-mounted and pre-aligned as shown in FIG. 1, so that the roller device 1 can be integrated as a module into a higher-level machine unit, for example, a casting segment installation.

The yoke 30 includes, on its end face 32, a medium connection 40 that communicates with the conductive means provided in the yoke 30 for the first medium circulation circuit for cooling the roller bearings 20, 22, the second medium circulation circuit for internal cooling of the roller elements 10, as well as the third a medium circulation circuit for supplying lubricants to the roller bearings 20, 22. On the opposite end side 32 of the beam 30, such a connection 40 for the medium is also provided. Depending on the version, an appropriate supply for cooling media of the circulation cooling circuits may be provided on one side, and a corresponding drain for cooling media on the opposite side, or a supply and drain for one section of the cross beam on one side, and on the other side corresponding inlets and drains for a correspondingly different area of the yoke.

Another medium connection 42 communicates with a conductive means for introducing water provided in the traverse, which serves as a cooling medium for secondary cooling. For secondary cooling, water from the nozzles 50 provided in the traverse 30 is applied to the slab to provide cooling of the slab here. A medium connection 42, which is in communication with the conductive means for the secondary cooling medium, is in this embodiment provided on the longitudinal side 34 of the yoke. In another embodiment, the medium connection 42 may also be used as a connection for cooling supports or internal cooling of a roller. This depends, in particular, on the arrangement of the conductive means passing in the traverse 30.

Another connection 44 for the medium, which is made in the form of a data bus, is provided on the longitudinal side 34 of the crosshead 30. In the roller device 1, sensors are provided for measuring various operating parameters, for example, for measuring the temperature of the coolant in various places in the roller device, for measuring reactions supports, temperature of supports, temperature of continuously cast billet, quantities of flowing substance, pressure, humidity, etc. In addition, switchgears for switching on can also be provided and turning off, for example, various sections of the secondary cooling. Through the connection 44 for the medium, the corresponding sensor signals can be transmitted, as well as the corresponding switching commands, as well as the power supply of the sensors and switches.

Various media, i.e., for example, cooling means of the first cooling circuit for cooling the supports, cooling means for the second cooling circuit for cooling the roller elements 10, water of the third circulation circuit for secondary cooling of the slab, lubricants for lubricating the supports 20, 22, hydraulic media or pneumatic media for hydraulic and pneumatic control systems, as well as separate data lines, operating current lines, sensor lines and electronic systems the accessories for the sensors and distribution elements located in the roller device 1 in the shown embodiment are all held inside the crosshead 30. This, for example, is achieved due to the fact that the corresponding deep grooves are made as a conductive means in the entire material of the crosshead so that they can be laid through these deep grooves signal wires. So that deep grooves can be made at large crosshead widths, grooves can also be made from two sides. Liquid and gaseous media, for example, the cooling media of the circulation loop for cooling the roller bearings and the circulation loop for internal cooling of the rollers, can also be guided in deep grooves inside the crosshead 30. Lubricants can also be guided in such deep grooves.

In one alternative embodiment, the conductive media for the media are conducted in a channel for the medium that is closed by a lid that is milled in the entire material of the traverse. The presence of a milled channel for the cooling medium, which is closed by a lid, has, for example, the advantage that the channel for the cooling medium for maintenance purposes can be easily opened and can be cleaned accordingly. This is not so easily possible with deep grooves. Also, signal wires, control lines and current leads can simply fit into such milled channels. Milled media channels also provide access to individual sensor positions.

The channels for the lubricant, which is supplied to the roller bearings 20, 22, can also be made in the form of a deep groove or in the form of channels milled in the traverse, which are provided with a cover. In this case, it is advisable for each of the roller bearings 20, 22 to provide one own channel for the lubricant so that the lubricant, for example a mixture of oil and air, which is supplied from the distributor of the lubricant, in each case could be individually distributed to individual roller bearings 20, 22.

Although in the embodiment of the roller device 1 shown in FIG. 1, all media are guided in the conductive means inside the traverse, of course, it is also possible to direct only part of the media in the conductive means inside the traverse, and some of the media, as is known from the prior art, outside the traverse. The decision on this depends, in particular, on the actual desired performance of the traverse, in particular, its volume. It goes without saying that in a traverse of a relatively small volume, only a limited number of media channels can be performed. But in connection with the present description, conductive means that are directed along the beam and rigidly connected to it, should also be considered as being "in the beam". In this case, respectively, conductive means are considered to belong to the traverse. If, for example, one of the conductive means is provided in the form of a channel directed along the crosshead and rigidly connected to it, then this conductive means is considered to be in the crossarm. Also, a line drawn along the traverse and rigidly connected to it for the medium, for example, a control line for transmitting electric or hydraulic control signals, is considered to be in the traverse.

It is significant in this regard that either the conductive means for at least three different media are placed in a traverse, that is, for example, channels for cooling means for cooling supports, channels for cooling means for cooling rollers and grooves for supplying a lubricant, or at least one conductive means for "new environments", that is, for example, a cooling medium for internal cooling of the rollers, a cooling medium for secondary cooling (for example, one-component or two-component cooling h) a hydraulic medium for a hydraulic control line, a pneumatic medium for a pneumatic control line, a conductive medium for supplying electrical energy, a conductive medium for electrical control signals, a conductive medium for electrical measurement signals, a conductive medium for optical measurement signals, or an electrical or optical system tires are provided in the traverse.

Accordingly, the largest part of the media, which were previously supplied through separate pipelines from the outside, is now directed through the corresponding channels and grooves in the traverse 30 to their respective destination. This, on the one hand, has advantages when mounting the roller device 1, since not so many work steps are necessary for embedding the roller device 1, because it can be embedded in the form of a module. Due to integration in the form of a module, in particular in the form of a pre-mounted, pre-tested and pre-aligned module, after mounting the module on the frame, only the appropriate media inlets must be connected to the media connections provided on the module. The corresponding coupling connection can be provided automatically already when installing the beam on the frame. This can, in particular, also be carried out by means of connectors, for example, plugs, sleeve and coupling elements or the like, which can be connected without difficulty.

On the other hand, individual inlets for media in the traverse are better protected from negative mechanical influences, breakthroughs and other malfunctions that may occur during operation of the roller device. This greatly improves reliability. In addition, the module can be tested and adjusted before embedding.

Depending on the media used in each case, and also depending on each of the other types of application of the corresponding roller device 1, the corresponding connections 40, 42 and 44 can be located on the crossarm 30 in different positions. The arrangement shown in FIG. 1 as an example is preferable when the individual roller devices 1 in the form schematically shown in FIG. 5 are inserted into a machine unit of a higher level, for example, in a segment, joint in joint or, respectively, crosshead 30 to crosshead 30 are connected to each other to form a corresponding segment. In this case, as described below again in detail in connection with the embodiment shown in FIG. 5, it is preferable that at least the connections 42 for the secondary cooling medium and the connections 44 for the data bus are located on the longitudinal sides 34 of the crosshead 30. Due to this can, in particular, when individual traverses are shifted with each other, it is as if automatically the connection of the corresponding circulation circuits of the media with each other is achieved. In other words, here with traverses arranged in series for some conductive means, it is possible to completely dispense with the performance of separate work on connecting cables or pipelines. By connecting only the respective traverses with each other, a corresponding connection of the conductive means through the corresponding connections for the media is achieved. In this way, an even more efficient installation can be achieved, and the connections or, respectively, the connections between the individual media lines in the respective traverses in a secure position are securely located between these traverses.

The individual media connections in this embodiment are respectively in a kind of serial connection. Such a serial connection is not at all difficult, for example, in the case of a bus wire, since here a very large number of signals can be transmitted on the same bus. For the secondary cooling medium, a series connection is also possible without difficulty, since the secondary cooling medium in the direction of casting is slightly heated, and accordingly, without any difficulties, we will carry out a continuous flow of the secondary cooling medium from the first to the last roller device of one segment.

With respect to cooling the roller bearings 20, 22 and cooling of the respective roller elements 10, such a series connection may also be possible. However, it should be borne in mind that a significant amount of heat must be removed by means of a coolant. Accordingly, when connected in series, it may happen that for the last roller devices in the corresponding series connection, possibly due to already significant heating of the cooling medium, sufficient cooling power will no longer be provided. Accordingly, in the example of FIG. 1, the connection 40 for the medium, which, in particular, is provided for the flow of the cooling medium for the roller bearings 20, 22, as well as the cooling medium for the internal cooling of the roller elements 10, is provided in the form of a connection located on the front side 32, so that each roller device 1 has a separate coolant supply for these primary circulation cooling circuits so that sufficient cooling power can be provided for each individual roller device.

In addition, it is proposed to lead the lubricant supply for each roller device 1 coming from the lubricant distributor separately to each of the said roller bearings 20, 22. Accordingly, in the embodiment shown in FIG. 1, the lubricant distribution connections are also located on the end side 32 traverses 30.

Here, however, any other suitable combinations and positions for each connection can be found for media that must be connected to and diverted from the yoke 30, which may also take other considerations into account.

For example, it is also possible to provide suitable plug and fluid connections not only in the end portions of the yoke 30 on the longitudinal side 34, but they can, of course, also be provided in the region of the internal portions of the yoke, as, for example, with the reference designation 36 In this case, also by simply shifting the traverse 30 with each other when mounting in a larger unit, the corresponding connections and connections are as if automatically connected to each other.

In another connection, it may be proposed to arrange separate connections on the rear side 38 of the beam 30, that is, the side of the beam 30 turned away from the slab so that the preferred layout of each of the connections with respect to installation is achieved, and, for example, it was necessary to make shorter channels or deep grooves inside the beam 30. If the medium, for example, is supplied in the middle region of the beam 30 from the rear side 38, the lengths of sections of the respective channels for the media necessary in each case can be halved.

Figure 2 shows a schematic side view of a section of a segment 100, while the figure shows the free upper side of the segment. A corresponding complementary device is provided on the supporting lower side, while seven roller devices are accordingly also provided here. This, for example, is also shown in figure 3, which shows the free upper side and the supporting lower side of the segment 100.

Segment 100 has a segment frame 110 on which seven roller devices 1 are mounted, similar to the roller device 1 shown in FIG. Corresponding media inlets to the medium connection 40 in the state of the segment 100 shown in FIG. 2 are not yet connected via the corresponding plugs or, respectively, couplings. Other media connections are located on the back (rear) side 38 of each roller device 1, so that they extend inside the segment frame 110.

Separate roller devices 1 are mounted on the frame 110 of the segment, each in the form of an integral (complete) module. In other words, the individual roller devices 1 should not be assembled from their individual parts on the frame 110 of the segment, and the pre-mounted roller device 1, including the crosshead 30 and the roller elements 10 pre-mounted on it by the roller bearings 20, 22, directly in the form of a single module mounted on the frame 110 segments. After mounting the roller devices 1 on the frame 110 of the segment, it is only necessary to connect the appropriate inlets for the media and the outlets for the media to the docking devices provided for this.

In particular, each segment 100 can be assembled due to the fact that the roller devices 1 are mounted on each frame 110 of the segment by connecting with bolts and / or screws, while some of the media lines are connected when the beam is mounted on the frame 110 of the segment. Other media lines after installation are connected to each of the roller devices 1 via plug and socket connections. Accordingly, the need for a detailed separate external connection of the traverse with pipelines or cables disappears. Of course, nevertheless, the connection itself by pipelines or cables of the frameworks of the segments should be carried out and be available.

Thanks to the proposed integrated traverses, casting machines can now also be produced with small radii of curvature of the technological axis of the installation, for example, from 4000 to 5000 mm, while small diameters of rollers, for example, from 120 mm to 180 mm, are also allowed for rollers. By simply connecting media from the rear of the traverse or from the front of the traverse, media can be connected even with these small radii. Small radii were previously impossible, since there was no possibility of access for welding the corresponding supply pipes for the media.

It is also preferable when performing the traverse in the proposed embodiment that when installing the traverse on the segment frame, you can do without supporting traverses in the segment frame, since in this case they are formed by this traverse. Accordingly, in the frame of the segment, you can do without every 2nd or every 3rd support, so that the frame of the segments can be made easier.

The possibly damaged roller device 1 within the segment 100 can thus also be relatively simple and quick to be replaced, since here it is only necessary to remove the corresponding sleeve and joint joints and replace the modular roller device. The actual replacement of the roller device is usually carried out after the entire segment in the corresponding casting stream has been replaced. Replacement of the roller device is then carried out respectively in the workshop for repair of segments.

In addition, roller devices 1 having such a modular design can be kept in stock and, if necessary, can be quickly and efficiently replaced. In addition, the quota of malfunctions during installation is lower, since the roller devices inside themselves are closed systems that only need to be connected using the coupling and docking devices provided for this.

The operational reliability of the installation and the repair efficiency are further enhanced by the fact that each roller device 1 in the form of a whole (complete) module, which has a primary cooling circuit, a lubricant circulation circuit, secondary cooling and data transmission devices, can be installed before installation fully assembled, pre-checked and pre-regulated. In particular, also the position of the rollers in the plane can be adjusted already in a modular state, so that the editing and adjustment work when embedding each roller device 1 in the frame 110 of the segment can be reduced to a minimum.

From the proposed design it also follows that the reliability of each individual roller device can be significantly increased, since it is possible to completely or for the most part do without a separate pipe connection. In particular, all lines for media and data transmission are drawn inside the traverse, which is a node internally closed, in particular when it is milled from solid material. Due to this, the risk of deformation fractures when separately connected by pipelines due to different coefficients of thermal expansion of various components can also be reduced, since separate channels and deep grooves are provided in the quasi-monolithic traverse 30.

Figure 4 shows a side view of the segment 100, while only one single roller device 1 is visible, which has three roller elements 10 supported on the respective roller bearings 20, 22. Secondary cooling is clearly distinguishable by nozzles 50, which are fan-shaped in width jet, can apply a cooling medium to the slab. By means of the control valves provided in the crosshead 30, individual sections of the secondary cooling can be connected and disconnected.

The traverses 30 for the media connections 42 and 44 provided on the rear side 38 are indicated in this half-cut image. In addition, it turns out that the input of the cooling medium for the internal cooling of the rollers is carried out from the crosshead 30 into the roller elements 10 through the lateral inlets 12 connected to the crosshead through the cover of the roller support nodes.

Figure 5 shows another segment 100 ', in which the individual roller devices 1 are adjacent to each other, so that the crossbars 30 in sections 34 of the longitudinal sides are adjacent to the adjacent crosshead. Thus, it immediately turns out that the connections 42 for the media for the cooling medium are adjacent to each other so that the secondary medium can flow through all the roller devices 1, without the need for additional external connection by pipelines. The same thing happens in the case of the electric data bus, and here the connections 44 for the media are also provided on the longitudinal side 34 so that when two roller devices 1 are moved together, an automatic electrical connection is made between the corresponding connections 44 of the data bus.

On the rear side 38 of the beam 30 in FIG. 5, a milled cooling channel 52 can be distinguished. When mounting the traverse 30 on the frame 110 of the segment, which is not shown in FIG. 5, or with a separate cover provided that covers the milled channel 52 for the coolant, an easily accessible and maintenance-friendly channel for the coolant can be provided, which is protected passes inside the yoke 30, but still, when the lid is opened, it can be easily maintained. The shown channel 52 for cooling means is a conductive means for guiding the medium for cooling the supports. But in principle, such a channel 52 milled in the whole material can also be made for placing any other medium, in particular, also for placing electric or hydraulic lines for the medium.

Figure 5 shows, in addition, with the traverse 30 passing through the joint, the roof of the tunnel cooling chamber is executed, while the gaps 60 between the corresponding roller devices 1 or, respectively, their traverses 30 are filled by means of an insert shield 62 so that, as it were, there is a closed cover on the free upper side of the segment. In this way, the steam generated in the tunnel cooling chamber can be efficiently removed without the need for an oversized blower, which would have to deal with large amounts of by-product air.

Alternative to the insert flaps 62, which otherwise replace the weld flaps otherwise provided on the segment, the crosshead 30 itself can, however, also be designed so that it extends closely across the entire width of the casting to the adjacent crosspiece so that a quasi-continuous roof of the cooling chamber is obtained . For this, the traverse in its transverse direction, that is, in the direction of casting, must pass and have such a shape that it forms an almost continuous structure with the corresponding neighboring traverse.

Fig. 6 shows a section of the segment of Fig. 5 again in a schematic cross-sectional view from which the closure of the gaps 60 between the individual traverses 30 by means of insertion shields 62 is clearly seen. Thus, a tunnel cooling chamber can be effectively manufactured. But, as already stated, the crosshead 30 can also be made in the casting direction so that the inserts 62 can be dispensed with, since the individual crossbars are practically joined to each other without a gap.

7 shows a cross-sectional view of a roller device 1 in the region of a roller support 20. A crossarm 30 is also shown in cross-section in the image. Three conductive means 310, 320 and 330 are provided in the traverse, which are made in the entire material of the traverse 30 in the form of deep grooves. The conductive means 310, 320, and 330 in the embodiment shown serve to direct coolants and lubricants. The conductive means 310 serves to guide lubricants for the rollers 20. The conductive means 320 conveys a cooling medium for internal cooling of the rollers, the conductive means 330 - a coolant for cooling the rollers 20.

In the traverse 30, a conductive means 340 is also provided in the form of a back-open channel, which is milled in the entire material of the cross-beam 30. A hydraulic control line 342 is laid in the channel. In addition, a conductive means 350 is provided in the traverse 30 in the form of a channel extending along the traverse 30 and rigidly connected to it, in which the bus system 352 passes.

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

Fig. 8 schematically shows the arrangement (arrangement) of coolant flows for internal cooling of the rollers with a separate supply for each beam 30. In this case, the cooling medium through the distributor 400 and the corresponding medium connection 40 is introduced into the corresponding conductive means in the beam 30. After the cooling medium flows through the rollers 10, it is again taken by the distributor 420 located on the opposite side and discharged. Accordingly, we are talking about the serial connection of individual roller devices.

Fig. 9 shows a cooling example similar to Fig. 8 for the roller bearings 20, in particular, the middle supports 20. In this case, the cooling medium is again introduced through the distributor 410 into the respective crossbars 30 and then through the conductive means provided in the crossarm 30 is transported to the middle supports 20 and then through conductive means is directed to the drain distributor 420.

Figure 10 shows a schematic layout of the distribution of the cooling medium for secondary cooling. This arrangement essentially corresponds to that shown in FIGS. 8 and 9, namely, the secondary cooling medium is supplied through the distributor 410 to the cross-arms 30 and then discharged through the secondary cooling nozzles 50.

Figure 11 shows one of the options for secondary cooling: here the traverses 30 are located so that they are directly joined with each other, and the conductive means have connections 42 for media, corresponding to the connections 42 shown for media shown in Fig. 5. Accordingly, due to the location of the traverse 30 directly end-to-end with each other, it is achieved that the supply 410 'is performed inside the traverse. Separate conductive means for distributing the secondary cooling medium branch off from this supply 410 ′, respectively. In this embodiment, a secondary cooling means is applied across the entire width of the crosshead.

FIG. 12 shows one embodiment similar to FIG. 11, in which the first 410 ′ and second 410 ″ are provided for the secondary cooling medium, the first supply supplying cooling means to the central nozzle 50 ′ and the second supply supplying cooling means external nozzles 50. In this way, targeted distribution of the secondary cooling means is possible.

List of Reference Items

1 Roller

10 Roller element

12 Enter

20 Middle support

22 Outside support

30 Traverse

32 End of traverse

34 The longitudinal side of the traverse

36 The middle area of the beam

38 Rear side of the yoke

310, 320, 330 Conductive means in the form of deep grooves

340 Conductive means in the form of a milled channel

342 hydraulic control line

350 Conductive means in the form of a laid channel

352 Bus system

40, 42, 44 Media Connections

400 distributor

410, 410 ', 410' 'valve

420 distributor

50, 50 'Secondary cooling nozzle

52 Channel in traverse

60 Interval

62 Insert flap

100 Segment

110 wireframe segment.

Claims (20)

1. A roller device (1) for forming a continuous casting guide of a segment (100) of a casting machine, including a beam (30) and at least one roller element (10) supported by a roller support (20, 22) on the beam (30), characterized in that at least one conductive means (310, 320, 330, 340, 350) is provided in the traverse (30) for guiding at least one medium, while the roller device is adapted to be embedded in the frame of the filling machine, preferably in segment frame, in the form of pre-cm mounted module. 2. The roller device according to claim 1, wherein said at least one conductive means is provided for guiding at least one of the following environments: a cooling medium for internal cooling of the rollers, a cooling medium for secondary cooling, a hydraulic medium for hydraulic control lines, pneumatic medium for the pneumatic control line, conductive medium for supplying electric energy, conductive medium for electrical control signals, conductive medium for electrical signals from measurements, a conductive medium for optical measurement signals, or an electrical or optical bus system. 3. The roller device (1) according to claim 1 or 2, in which the traverse (30) further provides conductive means for guiding the cooling medium for cooling the bearings and / or lubricant for lubricating the roller bearings (20, 22). 4. The roller device (1) according to claim 1 or 2, in which conductive means are provided in the traverse for at least three different media. 5. The roller device (1) according to claim 1 or 2, wherein at least one conductive means is provided in the traverse (30) in the form of a groove, in particular a deep groove, in the form of a channel closed by at least one cover (52), in the form of a channel re-closing by a lid, in the form of an open channel, in the form of a channel sealed with silicone, in the form of a medium guide passing along the beam and / or rigidly connected to it and / or in the form of at least one pipeline laid inside the beam . 6. The roller device (1) according to claim 1 or 2, in which at least one medium connection (40) provided on the end face (32) of the beam (30) is in communication with at least one conductive means. 7. The roller device (1) according to claim 1 or 2, in which at least one medium connection (42, 44) provided on the longitudinal side (36) of the beam (30) is connected to at least one conductive medium means. 8. The roller device (1) according to claim 1 or 2, in which at least one connection (42, 44) provided on the rear side (38) of the beam (30) for the medium is connected with at least one conductive means. 9. The roller device (1) according to claim 1 or 2, in which the connections (40, 42, 44) are provided for media made in the form of plug, socket or coupling elements, in particular in the form of hybrid plugs, hydraulic clamping strips with flat seals, connecting pipe with round o-rings on both sides, plugs for data bus. 10. The roller device according to claim 9, in which at least two media are in communication with the traverse through one separate plug, socket or docking element. 11. The roller device (1) according to claim 1 or 2, in which a medium connection is provided on the longitudinal side (34) of the beam (30) with the possibility of communication with the corresponding connection (42, 44) for the medium in the beam of the adjacent roller device (1) ) and, in particular, with the possibility of direct connection of conductive devices corresponding to this connection in both traverses. 12. The roller device (1) according to claim 1 or 2, in which at least one spray nozzle (50) communicates with the conductive means for spraying the secondary cooling medium onto the slab, wherein at least one nozzle is provided, in particular, on the longitudinal side (34) of the yoke. 13. The roller device (1) according to claim 1 or 2, in which the traverse is provided with conductive means for guiding the signal wires for various measurements, in particular for measuring the reaction of the support, temperature of the support, temperature of the continuously cast billet, temperature of the cooling medium, quantities of flowing substance , pressure, humidity. 14. The roller device (1) according to claim 1 or 2, in which the beam (30) in the casting direction is so long that it forms the roof of the cooling chamber with the beam of the adjacent roller device and, preferably, is substantially closed with the beam of the adjacent roller devices. 15. The roller device (1) according to claim 1 or 2, which is pre-assembled, tested for operability and straightened out before final assembly into the segment. 16. The roller device (1) according to claim 1 or 2, in which the diameter of the rollers of the roller elements is from 120 mm to 180 mm. 17. A segment (100) for a filling machine comprising a frame (110), characterized in that at least two roller devices according to one of the preceding paragraphs are provided on the frame. 18. The segment of claim 17, wherein plug, sleeve, or docking elements are provided for supplying media to the roller device. 19. The segment according to 17 or 18, in which the radius of curvature of the technological installation of the filling machine is up to 4000 mm, in particular from 3000 mm to 4000 mm. 20. The segment according to 17, in which the frame is installed less traverses than provided roller devices.

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