KR101517163B1 - Roller device - Google Patents

Abstract

The invention relates to a roller device (1) for forming a segment (100) for guiding strands, in particular in a caster, comprising a cross beam (30) and a roller bearing (20, 22), and guiding means for three or more media are provided in the cross beam (30).

Description

ROLLER DEVICE

The present invention relates to a roller device, wherein the roller device comprises at least one roller provided in a cross beam extending in the direction of the roller axis. A plurality of roller units of this type can be assembled, for example, into strand guides of a casting machine, in particular with complete casting bowls, or with individual segments, or with drive rollers, May be formed as straightening rollers.

Roller devices including roller members supported in cross beams are known.

From DE 26 37 179 a strand guide for a continuous casting system is known, in which case the roller housings supporting the respective rollers can be cooled with coolant supplied through independent conduits, respectively.

JP 08168859 A discloses an apparatus for cooling roller segments in a continuous casting system in which the bearing housings of the respective roller segments are supplied with coolant by independently supplied conduits.

From EP 1 355 752 B1 strand guide segments are known which also include cross beam members which are considered for secondary cooling of the slab in addition to the plurality of rollers.

A disadvantage of the previously known solutions using coolant supply through separate conduits is that the conduits may be particularly susceptible to failure due to the risk of breakdown as well as high temperature loads in the casting machine.

If the individual segments have to be repaired, or if they commence exchange on a schedule for each roller device, the roller devices must be connected to each independently mounted conduit systems, which means maintenance time, maintenance costs But maintains a significant level of system failure.

It is an object of the present invention to increase the reliability of roller devices or segments as well as system availability in a casting machine, based on the known prior art.

This object is achieved by a roller device comprising the features of claim 1.

Correspondingly, there is provided a roller device comprising a cross beam and at least one roller member supported in the cross beam through a roller bearing. According to the present disclosure, guiding means for three or more media are provided in the crossbeam. The guiding means are particularly provided for guiding the cooling medium for cooling the roller bearings, the cooling medium for cooling the rollers and the lubricant for lubricating the roller bearings.

The term " medium " in the present disclosure also refers to the data bus as well as the current supply for sensors and circuit devices, in addition to the various cooling and lubricating media which must be fed to and partially discharged from the roller device. In other words, the concept of medium means all operating means and control means supplied to and discharged from the roller apparatus during operation in the present disclosure.

Preferably, in the crossbeam, three or more media are conveyed internally through guiding means, i. E. Cooling medium for cooling the bearings, cooling medium for roller internal cooling, lubricant, cooling medium for secondary cooling, pneumatic control In the formation of a roller unit comprising the crossbeam, to which a compressed air medium for hydraulic control, a hydraulic medium for hydraulic control, a current supply, signaling of a sensor, etc. may be guided, each guiding means Thereby enabling higher reliability and availability of the system compared to independent conduits extending in a protected manner and correspondingly routing to the outside. Further, during the maintenance work, additional assembling procedures for connecting independent conduits for supplying and discharging the cooling medium for each bearing, for example, are also omitted.

The cooling medium for bearing cooling, roller internal cooling and / or secondary cooling can be, for example, water as a single material cooling, or as a dual material cooling, for example a water / air mixture. Of course, other substance mixtures, multi-substance mixtures may also be used as the cooling medium.

Preferably, each guiding means is provided for guiding one or more of the following media. - cooling medium for roller bearing cooling, cooling medium for roller internal cooling, lubricant for roller bearing lubrication, cooling medium for secondary cooling (eg single or double material cooling), hydraulic medium for hydraulic control lines, compressed air medium for pneumatic control lines , Conduction media for electrical energy supply, conduction media for electrical control signals, conduction media for electrical measurement signals, conduction media for optical measurement signals, or electrical and / or optical bus systems. This way a corresponding simplification of the supply of each medium can be achieved.

According to a further preferred embodiment there is provided a roller arrangement for forming a segment for guiding a strand, in particular in a caster, comprising a cross beam and at least one roller member supported by a roller bearing in the cross beam, There is provided at least one guiding means for guiding one or more of the following media. - cooling media for roller internal cooling, cooling media for secondary cooling (eg single or double material cooling), hydraulic media for hydraulic control lines, compressed air media for pneumatic control lines, conduction media for electrical energy supply, Media, conduction media for electrical measurement signals, conduction media for optical measurement signals, or electrical or optical bus systems. Through the guidance of the "new media" directly in the crossbeam, a new possibility with regard to the assembly and reliability of the roller member is disclosed.

According to a further preferred embodiment, there is proposed a roller arrangement comprising a cross beam and at least one roller member supported in this cross beam through a roller bearing, wherein the cross beam includes one or more Guiding means is provided, and a roller device for forming a segment for guiding the strand in the casting machine is provided.

Until now, roller cross beams (cross beams including mounted rollers) have been used only in casting bowls and not in segments. In casting bowls, the rollers with the crossbeam must be able to be disassembled separately, since the disassembly of the casting bow always means a longer stoppage and hence a loss of production. Since the support cross beams for supporting the rollers in the casting bow are arranged in the casting direction, the roller cross beams have a relatively large resistance moment (large height) for supporting the rollers, and such a resistance moment is utilized in the segments Which is much larger than the resistance moment of the medium cross beam.

The rollers on the media crossbeams have heretofore been used only in casting bowls, but not in the segments of the continuous casting system. The following definitions are referenced here for a more clear range setting.

Vertical system: all the roller pairs of the strand guide are arranged vertically to each other, up to the maximum position at which the strands must be completely solidified.

Arc-shaped system (arc-shaped system): Most of the roller pairs, as well as the copper plates of the permanent mold, are arranged geometrically on a circular-arc, in which case the angle of the arc is about 90 °. In the casting direction, pairs of calibrating rollers are connected to the arcuate part to calibrate the cast strand and transfer it to the straight horizontal part of the strand guide.

Vertical-curved system: A combination structure of the two system types described above, in which permanent mold plates and first roller pairs are arranged vertically to each other, after which the strand is curved into a circular arc by roller pairs. After the arc, again pairs of calibrating rollers are connected, which calibrate the cast strand and transfer it to the straight horizontal portion of the strand guide.

Casting Bow: A casting bow is an older type of structure that has been used (and is being used) in, for example, vertical-curved systems, in which all parts of the part of the strand guide that are located at the arcuate part, Are integrated within the casting bow, i. E. The number of roller pairs is typically between 25 and 45 roller pairs. The support of the casting bow for the rollers comprising roller cross beams is made through support cross beams which are arranged in the casting direction. When using roller cross beams, the roller cross beams are configured to support rollers having relatively large resistance moments (large height, for example, 100 mm thickness in the case of Arcelor Mittal Steel in Eisenhüttenstadt) Configuration).

Segment (Strand Guide): A more recent structural type of strand guides, the number of roller pairs (especially when the roller diameter is relatively small) is up to 10 in the arc-part and the maximum in the vertical or bend of the strand guide 14 to 16, more and more segments are located in the arc, and the support cross beams for the rollers in the segment are located below the roller bodies, i. E. The support cross beams are positioned perpendicular to the casting direction. The routing of the conduits for the rollers is usually made along the support cross beams, and the rollers are exchanged at the segment repair shop, rather than being exchanged within the system, for which the entire segment is exchanged. In this case, the upper frame and the lower frame of the segment form one unit, and the disassembly of the segments in the strand guide always takes place in the upper direction.

Arc segment (Strand guide): Same as a segment containing up to 10 roller pairs, in which case the pairs of rollers are arranged geometrically on the arc section.

Preferably the guiding means for the media are arranged in the form of bores in the crossbeam, in particular in the form of deep-hole bores, in the form of ducts sealed with covers in the crossbeam, and / As shown in FIG.

As such, the roller device may be configured as a complete module, and corresponding guiding means for guiding the media in the cross beam for the media may be fully checked and preconditioned already pre-mounted on the crossbeam. This segment can be repaired within a shorter time, and at a lower cost. For example, unintentionally damaged roller devices can be simply exchanged within segments including, for example, 14 roller devices. Since the roller unit is pre-assembled, pre-inspected and pre-adjusted, the exchange of the roller unit in the segment can proceed quickly. Correspondingly, repair costs and repair times at segment repair shops can be reduced compared to conventional segments.

Preferably, the roller arrangement comprises additional guiding means for one or more additional media in the crossbeam, in particular a cooling medium for secondary cooling (single or dual material cooling), a current supply for the sensors or the opening and closing members, / RTI > and / or the additional guiding means for guiding signaling may be provided. Preferably, all of the supply and discharge lines for all the necessary media in the roller device, in order to carry out a complete module inspection and to accommodate them in a way that protects all the guiding means in the crossbeam and simply mounts the modules, And is internally routed.

In order to achieve rapid assembly and simple maintenance, the respective media connections communicating with the guiding means in the cross beam are provided on the front end face, side face or back face of the cross beam. Thus, for example, by simply screwing the roller device to each support frame of the segment, and then simply coupling the coupling devices to the corresponding media connections, a crossbeam, such as a cooling medium circuit, a grease circuit, , Current supply devices, sensors and circuit devices. In this case, the crossbeam may be formed such that the media connections are automatically connected to the respective supply lines through seating the crossbeam on the segment frame.

An efficient coupling device may also be provided through suitable engagement members such as, for example, hybrid connectors, water clamping plates with flat gaskets, coupling tubes with O-rings on both sides, and so on, The connection of each of the supply and discharge lines to each other can be carried out simply and reliably. Preferably, the plug, the engaging and coupling members are formed so as to simultaneously guide two or more media. As such, each connection can be formed much more efficiently because the number of joining processes can be reduced.

In order to enable simple maintenance of each of the media ducts in the crossbeam, the media ducts are milled, for example, sealed to the back of the crossbeam, i. E. To the side of the crossbeam, Ducts so that only the cover needs to be opened to service each of the cooling medium ducts in connection with maintenance or cleaning. Also, open ducts or silicone-enclosed ducts with internal guiding means may be provided. The open or silicone sealed ducts are preferably provided on the side of the crossbeam facing in the opposite direction of the slab, i.e. the "backside" of the crossbeam. According to a further preferred embodiment guiding means are provided which are rigidly coupled to the crossbeam while extending along the crossbeam.

Separate conduits and cables that were laid out of the crossbeam or were supplied to beyond the full width of the crossbeam according to the prior art through the placement of the respective media ducts inside the crossbeam, So that the risk of damage can be reduced in the case of yielding inside each casting machine, or in case of high radiation heat.

In addition, by arranging the media ducts inside the crossbeam, arc-type segments having a small roller diameter and correspondingly a small casting radius can also be formed, Have been so complicated and vulnerable to defects until now, or generally impossible to provide access to perform welding operations. With the crossbeams of the present application, a casting machine with a small casting radius of, for example, 4000 to 5000 mm is now also formed, in which case the rollers also permit a small roller diameter of, for example, 120 mm to 180 mm.

It is also possible to exclude the support cross beam in the segment frame by seating the cross beams in the segment frame, preferably by forming the cross beams in the form suggested, since in this case the support cross beam . It is possible to exclude each second or respective third support portion correspondingly in the segment frame.

Also, by routing each guiding means within the crossbeam, it can be achieved that the segment frame structure which internally has to accommodate a plurality of, for example, seven, roller apparatuses is clearly simplified, There is no need to provide separate conduit connections for the cooling medium circuits or signal lines or at least do not need to provide the crossbeams in the range needed until now when the cross beams are connected in series in the casting direction.

Various signal lines may be accommodated in the medium supply and dispensing apparatuses inside the crossbeam for various measurement functions such as bearing support force, bearing temperature, strand temperature, cooling medium temperature, flow velocity, pressure, humidity, In such a case, the measurement signals may be picked up at a central position, for example at the front end of the crossbeam, at the side section thereof, or at the back thereof, e.g. via a multifunctional plug, intelligent clamp, or data bus connection, At this time, the signal lines directed to the respective sensors need not be attached to the outside of the housing of the cross beam. Correspondingly, the line routing here can be configured more efficiently, and the corresponding signal lines are no longer located in the thermal and mechanical hazardous areas of the area of the casting line.

Also preferably here, the sensors of the roller device can be fully pre-assembled, pre-inspected, preset or adjusted already in the module state, i. E. Before the roller device is mounted in the segment, Because the device can form an essentially closed system. In this case, the individual guiding means for the various media can likewise be perfectly checked for its function. Modular configuration and complete functional testing significantly reduce the mounting time within each segment.

According to a further preferred embodiment, the media circuit for secondary cooling can likewise be accommodated in the crossbeam. To this end, water distribution chambers for the nozzles are preferably provided in the roller line, and the opening and closing valves may also be arranged in the roller line, for example, in order to enable the individual nozzles to be activated and deactivated in order to provide secondary cooling for different strand widths. On its surface, or on its surface.

Preferably, when two cross beams are pushed adjacent to one another, the crossing of the cross beams is performed in such a way that the connection of the respective media connections of adjacent cross beams is performed so that the corresponding guiding means are connected to one another via the media connections. And provide respective media connections for the guiding means on the side surfaces. Thus, for example, a cooling circuit may be formed from the first roller unit to the final roller unit completely, in a nearly series connection, but for this purpose a separate tubing of cross beams located inwardly in the segment is disclosed You do not have to. In other words, a coolant supply line may be connected to the first roller device, and then the coolant may flow through all the roller devices located parallel to each other, and a coolant outlet may be connected to the final roller device. The number of externally supplied connections can thus be dramatically reduced. It is also clear that the above configuration is also conceivable for the measurement signals that can be conveyed by the media connections between the respective roller devices, thereby providing a single terminal of the measurement bus to one side of the segment The signals of all the roller units of the segment can be sufficiently picked up.

In this connection, however, it may be necessary to provide a plurality of connections in the interior of the segment, for example on the basis of the coolant temperature in the region of the roller internal cooling device or the bearing cooling device, Is limited. The new cooling medium is always supplied again in order to enable the cooling capacity to remain the same across the width of the crossbeam accordingly. However, the series connection of the individual rollers where the same coolant flows through all the rollers of the crossbeam can likewise be achieved when the coolant capacity is dimensioned accordingly. The problem does not exist, for example, in the area of supplying the secondary coolant, so that the secondary cooling can be formed as a series connection, that is to say providing only one port at the beginning of the segment as a supply for secondary cooling.

Correspondingly, preferably, the individual roller devices may be connected in series in connection with one or more of the media circuits.

On the moving side, i. E. In the upper frame of the segment, the crossbeams can be shaped to replace at least a portion of the tunnel-type cooling chamber plate, via a geometric configuration. This can be achieved in particular by the fact that the formation of the crossbeams is dimensioned so that the spacing between the individual roller devices is small in the transverse direction of the cross beam, i. E. In the casting direction (direction perpendicular to the respective roller axes). Correspondingly the water vapor produced by the secondary cooling is efficiently extracted through the respective suction devices and the corresponding blower does not have to be dimensioned too large because the ratio of the leaking air sucked through the gaps between the cross beams This is because it is maintained at a reasonable level. It may also be excluded to provide separate weld plates to form the respective cooling chambers between the cross beams. In addition, assembly efficiency can thereby be significantly increased during the maintenance process and during assembly of the individual segments.

1 is a perspective view schematically illustrating a roller device including a plurality of roller members mounted on roller bearings on a cross beam.
2 is a side view schematically showing a segment on the moving side supporting seven roller devices.
Figure 3 is a side view schematically showing the moving side as well as the fixed side including the segment of Figure 2;
Figure 4 is a side detail view schematically showing the segment of Figure 2;
5 is a perspective view schematically showing a plurality of roller devices arranged side by side from the side of a crossbeam facing in the opposite direction of the slab.
Fig. 6 is a side cross-sectional view schematically illustrating the roller devices arranged side by side and according to Fig. 5; Fig.
Fig. 7 is a cross-sectional view showing the roller device according to Fig. 1 cut away. Fig.
8 is a schematic view showing a layout for cooling the inside of the roller.
9 is a schematic view showing a layout for cooling the center bearing.
10 is a schematic view showing a structure for secondary cooling in the first embodiment including the external supply portion.
Figure 11 is a schematic diagram illustrating a structure for secondary cooling in a second embodiment in which the feed lines are routed in cross beams.
12 is a schematic view showing a structure for secondary cooling using two different inlets for controlling the application width.

BRIEF DESCRIPTION OF THE DRAWINGS The disclosure herein will be described in greater detail on the basis of drawings of the drawings. The same members in the figures are denoted by the same reference numerals, and a repetitive description of each member in part is excluded.

1 is a schematic perspective view of a roller device 1 including three roller members 10 supported respectively by roller bearings 20, 22. In this case, two roller bearings 22 are provided on each outer surface of the roller device 1, and the roller bearings 20 are provided as a central bearing. The roller bearings 20 and 22 are connected to the crossbeam 30 so that the roller members 10, the roller bearings 20 and 22 and the crossbeam 30 form one module. The cross beam 30 extends in the direction of the roller axes of the roller members 10. Such a modular roller device 1 can be preassembled and pre-adjusted in the manner shown in figure 1 so that the roller device 1 can be used as a module to be mounted on an upper machine unit, .

The cross beam 30 includes a media connection 40 in its front end face 32 which is connected to a first media circuit for cooling the roller bearings 20 and 22, A second medium circuit for cooling and a third medium circuit for supplying lubricant to the roller bearings 20,22. The media connection 40 is likewise provided on the opposite end face 32 of the cross beam 30. Each inlet may be provided on one side of the crossbeams for the cooling mediums of the cooling circuits and on the opposite side may be provided with an outlet for the cooling medium or may be provided on one side of the crossbeam, And the other side thereof is provided with respective inlets and outlets for the respective other area of the cross beam.

An additional media connection 42 is in communication with the guiding means provided in the crossbeam to supply the water used as the cooling medium for the secondary cooling. For secondary cooling, water is applied from the nozzles 50 provided in the crossbeam 30 onto the slab here to achieve cooling of the slab. The media connection 42, which is in communication with the guiding means for the secondary cooling medium, is provided on the side face 34 of the cross beam in accordance with the present embodiment. Further, according to another embodiment, the media connection 42 may also be used as a port for cooling the bearings or for cooling the roller interior. This is determined in particular by the layout of the guiding means extending in the crossbeam 30.

Additional media connections 44, defined in the form of a data bus, are provided on the side 34 of the crossbeam 30. Within the roller device 1 sensors are used to measure various operating parameters, for example to measure the coolant temperature at various positions in the roller device and to measure the bearing support force, bearing temperature, strand temperature, flow velocity, pressure, Lt; / RTI > In addition, the opening and closing devices can also be provided for activating and deactivating various sections, for example, for secondary cooling. Not only the corresponding signals of the sensors and the corresponding opening and closing commands can be transmitted through the media connection 44 but also the current supply for the sensors and switches can be performed.

A coolant for the first cooling circuit for cooling the bearings, a coolant for the second cooling circuit for cooling the roller members 10, a third circuit for cooling the slabs, , Individual data lines for sensors and opening / closing members located in the roller device (1), opening and closing lines, opening / closing lines for sensors and pressure sensors, as well as lubricant for lubricating And electrical supplies are all routed within the cross beam 30 in the case of the illustrated embodiment. This is achieved, for example, by means of the corresponding deep hole bores as guiding means being arranged in the complete material of the cross beam to lay signal lines through these deep hole bores. Further, in order to construct the deep hole bores even when the width of the cross beam is large, the bores can be formed from two sides. The cooling mediums of the liquid and vapor media, such as the roller bearing cooling circuit and the roller internal cooling circuit, can likewise be routed in the deep hole bores within the crossbeam 30. Lubricants can also be routed in the deep hole bores.

According to an alternative embodiment, the guiding means for the media are milled in the complete material of the crossbeam and are routed in a media duct which is sealed with a cover. Providing a milled cooling medium duct that is sealed with the cover provides the advantage that, for example, the coolant duct can simply be opened for servicing purposes and can be cleaned accordingly. This is not so simple in the deep hole bore. Signal lines, control lines and current supplies are also simply inserted into the milled ducts. In addition, milled media ducts allow simple access to individual sensor locations.

The ducts for the lubricant supplied to the roller bearings 20, 22 can likewise be formed as deep hole bores or as ducts milled in a crossbeam and provided with a cover. In this case, each of the roller bearings 20, 22 is provided with its own lubricant ducts for the purpose, so that the lubricant supplied from the lubricant distributor, for example the oil-air mixture, 20, < / RTI > 22).

Even though all media are routed in the guiding means inside the cross beam in the case of the embodiment of the roller device 1 shown in Fig. 1, it is evident that only a part of the media is guided to the guiding means inside the cross beam And some of the media may be routed outside the crossbeam as is known from the prior art. The determination of this can be carried out in particular according to the substantially targeted formation of the crossbeam, in particular the volume of the crossbeam. As a matter of fact, only a limited number of media ducts can be configured in a cross beam with a relatively small volume. However, guiding means that are routed along the crossbeam in conjunction with the present disclosure and that are rigidly coupled to the crossbeam should also be considered to be located "within the crossbeam. &Quot; In this case, correspondingly, the guiding means are regarded as belonging to the cross beam. For example, if the guiding means is provided in the form of a duct which is routed along the crossbeam and rigidly coupled to the crossbeam, the guiding means is regarded as being located in the crossbeam. Also considered to be located in the crossbeam is a media line that is routed along the crossbeam and is rigidly coupled to the crossbeam, e.g., a control line for transmitting electrical or hydraulic control signals.

Essential in this regard is the provision of guiding means for three or more media, that is to say ducts for coolant for cooling the bearings, ducts for coolant for roller cooling and bores for lubricant supply, , Or "new media ", i. E., A cooling medium for internal cooling of rollers, a cooling medium for secondary cooling (e.g. single or dual material cooling), a hydraulic medium for hydraulic control lines, An air medium, a conduction medium for supplying electrical energy, a conduction medium for electrical control signals, a conduction medium for electrical measurement signals, a conduction medium for optical measurement signals, or one or more guiding means for an electrical or optical bus system, Beam < / RTI >

Correspondingly, most of the medium that was conventionally supplied externally via separate conduits is now guided to the destination location of each of the media through corresponding ducts and bores in the crossbeam 30. This, on the one hand, represents an advantage in the assembly of the roller device 1, since the roller device 1 can be mounted as a module and so much work steps are not required to mount the roller device. As a module, it is only necessary to connect the respective media feeds to the media connections provided to the module after fixing the module to the frame, in particular through mounting as a fully preassembled, pre-tested and calibrated module. The corresponding coupling can be provided automatically at the time of the seating of the cross beam on the frame. This can in particular provide devices that are fully connected through connectors, e.g., plugs, mating and coupling members, and the like.

On the other hand, the individual feeds of the media in the crossbeam are better protected from mechanical breakdown, yielding phenomena and other failures that may occur during operation of the roller device. Thereby, the reliability is clearly increased. In addition, the module can be inspected and adjusted before installation.

Depending on the media used and the respective additional application types of each roller device 1 the corresponding connections 40, 42 and 44 may be arranged at different positions in the cross beam 30 have. The arrangement structure illustrated by way of example in Fig. 1 allows the individual roller apparatuses 1 to be mounted on upper machine units, for example in a manner such that they are mated to one another in order to form a corresponding segment upon mounting in the form schematically shown in Fig. Or crossbeams 30 are attached to each other in such a way that they come into contact with each other. In this case, at least the connections 42 for the secondary cooling medium and the connections 44 for the data bus, as will be described in greater detail below with respect to the embodiment shown in FIG. 5, 34). So that the mutual connection of the respective media circuits can be achieved almost automatically when the individual cross beams are pushed adjacent to each other. In other words, it can be completely excluded here to perform separate wiring or plumbing operations for some guiding means in connection with the crossbeams arranged side by side. Each connection of the guiding means through the corresponding media connections is accomplished by simply attaching the respective cross beams to each other adjacent to each other. This much more efficient assembly is achieved and the connections between the individual media lines in each crossbeam are placed between the crossbeams while being protected in a stable position.

The individual media connections are correspondingly arranged in a serial connection in accordance with the present embodiment. The serial connection is perfectly perfect, for example in the case of a bus line, because here a very large number of signals can be transmitted on the same bus. Even in the case of secondary cooling media, the series connection is equally perfectly possible because the secondary cooling medium is not substantially heated along the casting direction and correspondingly to the continuation of the secondary cooling medium from the first roller device to the final roller device Because the flow is perfectly possible.

The series connection of the roller devices 1 with cooling of the roller bearings 20, 22 and cooling of the respective roller members 10 may also be possible. However, it should be noted that considerable heat energy must be emitted through the coolant. Correspondingly, in the case of a series connection, in the case of the final roller devices in the corresponding series connection, sufficient cooling capacity may no longer be provided due to heating of the cooling medium already proceeding. Correspondingly, in the example of FIG. 1, the media connection 40, which is provided for the cooling medium for the roller bearings 20, 22 and the cooling medium for the internal cooling of the roller members 10, So that each roller device 1 can include an independent coolant inlet for the primary cooling circuit to supply sufficient cooling capacity for each single roller device.

Also, the lubricant feed out of the lubricant dispenser may each reach the roller bearings 20, 22, each designated separately for each roller device 1. Correspondingly, in the case of the embodiment shown in FIG. 1, the ports for lubricant distribution are also arranged in the front end face 32 of the cross beam 30.

Here, however, any other suitable combination structure and position is also provided for each media connection of the media to be fed and ejected relative to the cross beam 30, as a combination structure and location in which other considerations may be considered.

It is also conceivable to provide, for example, plugs and fluid connections corresponding to the side faces 34 in the end section of the crossbeam 30, as well as the fact that the plugs and fluid connections are, for example, But also to the area of the inner sections of the crossbeam. Also, in this case, by simply pushing the cross beams 30 adjacent to each other at the time of assembling into a larger unit, the respective connecting portions and the engaging portions can be connected to each other almost automatically.

In yet another aspect, in order to achieve, for example, shorter cross-beams 30 or even shorter ducts or deep hole bores in the interior of the crossbeam 30, To place the individual connections at the sides of the cross beam 30, that is to say towards the opposite direction of the slab. If the medium is supplied from the back surface 38, for example, in the central region of the crossbeam 30, the required line length of each of the media ducts can be bisected.

 In Figure 2, a section of the segment 100 is shown in schematic side view, in which case the portion shown in the figure is the moving side of the segment. Corresponding complementary devices are provided on the stationary side, correspondingly likewise being provided with seven roller devices. This can also be seen, for example, in Fig. 3 where the moving side and the fixed side of the segment 100 are shown.

The segment 100 includes a segment frame 110 to which seven roller devices 1 similar to the roller device 1 shown in Fig. 1 are mounted. In the state of the segment 100 shown in Fig. 2, the respective media supply units in the media connection unit 40 are not yet connected through the corresponding plugs or meshes. Additional media connections are placed on the back surface 38 of each roller device 1 so that the media connections extend inside the segment frame 110.

The individual roller devices 1 are mounted as a complete module in the segment frame 110 respectively. In other words, the individual roller devices 1 do not have to be assembled to the segment frame 110 with their own individual members, but rather the pre-assembled roller device 1 has a cross beam 30 and a roller bearing Including the roller members 10 preassembled by the rollers 20, 22, can be mounted as a module directly to the segment frame 110. After assembling the roller devices 1 in the segment frame 110, it is only necessary to connect the respective media supply lines and media discharge lines to the coupling devices provided for this purpose.

In particular, each segment 100 secures the roller devices 1 to each segment frame 110 via bolts and / or screw connections, wherein some of the media lines are already on the segment frame 110 By placing a cross beam on the cross beam. The other media lines are connected to the respective roller devices 1 by means of plugs and mating connections after seating. Correspondingly, fine fine external piping or wiring is excluded from the cross beam. Nevertheless, it is self-evident that you may need to run and provide plumbing and wiring of segmented frames.

Now, through the proposed integrated cross beams, a casting machine with a small casting radius of, for example, 4000 to 5000 mm is formed, in which case the rollers also permit a small roller diameter of, for example, 120 mm to 180 mm. Through the simple connection of the media at the back of the cross beams, or at the leading end face of the cross beams, the connection of the media can also be achieved at said small radius. Small radii were not possible in the prior art, as no accessibility to weld each of the media feeds was provided.

It is also possible to exclude the support cross beam in the segment frame, preferably by placing the cross beams in the segment frame, through forming the cross beams in the proposed form, since the support cross beam As shown in Fig. Correspondingly, each second or each third support in the segment frame can also be excluded, so that the segment frames can be formed more simply.

In this way, the damaged roller device 1 in the interior of the segment 100 is relatively simple and quick to replace because, here, only the respective engaging and coupling connections are removed and the modular roller device is replaced This is because it is all you need. Substantial replacement of the roller device is typically initiated after the entire segment has been exchanged in each cast strand. So that replacement of the roller device is correspondingly commenced at the segment repair shop.

In addition, the roller devices 1 constructed in the form of a module can be stored in a storage warehouse, and can be swiftly and efficiently exchanged when necessary. In addition, the error rate is even lower at the time of installation because the roller device already represents a system which is essentially sealed in itself and only needs to be connected to the provided engagement and coupling devices for this purpose.

The operational safety and efficiency of the maintenance of the system is such that each roller device 1 is fully constructed and pre-tested prior to mounting as a complete module comprising a primary cooling circuit, a lubricant circuit, a secondary cooling device and data transfer devices, And is further augmented through what can be set. In addition, roller flatness, in particular, can also be set in the module state, so that alignment and adjustment operations can be minimized when mounting the respective roller device 1 in the segment frame 110.

Further, from the proposed configuration, the reliability of each roller device can be obviously increased because, as with the separate wiring, the separate piping can be completely or mostly omitted. In particular, all media and data lines are routed in the interior of the crossbeam, which, if milled into a complete material, represents an essentially closed unit. In addition, the risk of strain breakage during separate piping can also be reduced due to the different coefficient of thermal expansion of the various components, since the individual ducts and the deep hole bores are located within a substantially monolithic cross beam 30 .

4, a side view of the segment 100 is schematically shown, in which only a single roller device 1 comprising three roller members 10 supported by corresponding roller bearings 20, have. In FIG. 4, secondary cooling with nozzles 50 that can apply a cooling medium onto the slab as indicated by a fan-type jet across the width is well known. By means of the opening and closing valves provided in the cross beam 30, the individual sections of the secondary cooling are connected and disconnected.

The media connections 42 and 44 provided on the backside 38 of the crossbeam 30 are shown in this half sectional view. In addition, the supply of cooling medium for internal cooling of the rollers is carried out from the cross beam 30 via the side feeders 12 connected to this cross beam and through the cover of the roller bearing devices into the roller members 10.

5 shows an additional segment 100 'adjacent to each other in such a way that the individual roller devices 1 are butted against each other in such a way that the crossbeams 30 are adjacent to the side sections 34 in the adjacent crossbeam. . As such, immediately, the media connection portions 42 for the cooling medium are connected to each other so that the perfusion of all the roller devices 1 is possible with the secondary medium, but no additional external piping is required. The same applies to the case of electrical data buses in which the media connections 44 likewise operate in such a manner that the electrical connections between the respective data bus connections 44 are effected when the two roller devices 1 are pushed together As shown in FIG.

On the backside 38 of the crossbeam 30, the milled coolant duct 52 in the case of FIG. 5 can be seen. Here, it is possible to easily access through the mounting of the cross beam 30 to the segment frame 110 not shown in FIG. 5, or by providing a separate cover covering the milled coolant duct 52 Maintenance-friendly coolant ducts may be provided that are extendable inside the crossbeam 30 while being protected, but can nevertheless be simply serviced by opening the cover. The illustrated coolant duct 52 is a guiding means for guiding the medium for bearing cooling. However, the duct 52, which is basically milled in a complete material, may be formed to receive another medium, in particular to accommodate electric or hydraulic media lines.

5 shows a structure in which a cover plate of a tunnel-type cooling chamber is formed together with cross beams 30 which extend in opposition to each other. In this case, each roller device 1 or a cross beam 30 are filled by the insertion plate 62 in such a way that a substantially airtight cover is provided on the moving side of the segment. Thus, the water vapor generated in the tunnel-type cooling chamber can be efficiently discharged, but it is not necessary to provide a very large blower to handle a large amount of leakage air.

Nevertheless, in a way that is replaced by insert plates 62 replacing the weld plates provided in other cases in the segment, the cross beam 30 itself is also in a manner such that a substantially continuous cooling chamber cover plate is formed throughout the casting width To an adjacent crossbeam in an airtight manner. To this end, the cross beam has to be extended and formed in its own lateral direction, i. E. In the casting direction, to form a broadly continuous structure with each adjacent cross beam.

Figure 6 is a schematic cross-sectional view of the segment section of Figure 5, in which the intermediate plates 60 between the individual cross beams 30 are sealed by the insert plates 62, . Thus, the tunnel-type cooling chamber is efficiently manufactured. However, as already explained, the crossbeams 30 can be formed in a casting direction, in a manner that allows the insertion plates 62 to be excluded, since the individual crossbeams can be butted against each other substantially without gaps.

7, the roller device 1 is shown cut away in the area of the roller bearing 20. The cross beam 30 is likewise shown in cross-section. Three guiding means 310, 320 and 330 are provided in the cross beam, that is, these guiding means are constructed as deep hole bores in the complete material of the cross beam 30. The guiding means 310, 320, 330 are used to guide the cooling medium and the lubricant in the illustrated embodiment. The guiding means 310 is used to guide the lubricant for the roller bearings 20. The guiding means 320 conveys the cooling medium for internal cooling of the rollers, and the guiding means 330 conveys the cooling medium for cooling the roller bearings 20.

Also in the crossbeam 30, the guiding means 340 are provided in the form of a duct which is milled in the complete material of the crossbeam 30 and opened in the rearward direction. A hydraulic control line 342 is inserted in the duct. Also within the crossbeam 30 is guiding means 350 which extends along the crossbeam 30 and is firmly coupled to the crossbeam and is provided in the form of a duct in which the bus system 352 extends.

Correspondingly, guiding means (310, 320, 330, 340, 350) for three or more media are provided in the cross beam (30).

Fig. 8 schematically shows the layout of the cooling medium flow for roller internal cooling using independent inlet for each cross beam 30. Fig. In this case, the cooling medium is fed into the corresponding guiding means in the cross beam 30 via the distributor 400 and the corresponding media connection 40. After the cooling medium has passed through the rollers 10, the cooling medium is again absorbed and discharged by the distributor 420 disposed on the opposite side. Correspondingly, a series connection of the individual roller devices is formed.

Fig. 9 shows an example of cooling for roller bearings 20, in particular central bearings 20, similar to Fig. In this case the cooling medium is again fed into the respective cross beams 30 through the distributor 410 and then to the central bearings 20 via the guiding means provided in the cross beam 30, And then guided to the discharge distributor 420 via the guiding means.

Fig. 10 schematically shows the arrangement structure for distributing the cooling medium for the secondary cooling. The layout of Figure 10 corresponds substantially to the layout shown in Figures 8 and 9, that is, the cooling medium for secondary cooling is supplied to the cross beam 30 via the distributor 410, And discharged through the nozzles 50.

11 shows a modification of the secondary cooling in which the cross beams 30 are guided directly to each other and are guided by medium guiding means 42 having media connecting portions 42 corresponding to the media connecting portions 42 shown in Fig. Respectively. Correspondingly, the arrangement of the cross beams 30 directly in contact with each other achieves that the inlet 410 'is formed inside the cross beam. The individual guiding means for distributing the secondary cooling medium are correspondingly branched from the inlet 410 '. In the case of this embodiment, the secondary coolant is applied over the entire width of the cross beam.

12, a first inlet 410 'and a second inlet 410' 'are provided for the secondary cooling medium, wherein the first inlet is connected to the central nozzle 50' And the second inlet supplies the coolant to the outer nozzles 50. Thus, the distribution of the secondary coolant is controlled as desired.

1: Roller device
10: roller member
12: Feeder
20: Center bearing
22: Outer bearing
30: Cross beam
32: Cross section of cross beam
34: Side face of the cross beam
36: central area of the crossbeam
38: rear face of the cross beam
310, 320, 330: guiding means as a deep hole
340: guiding means as a milled duct
342: Hydraulic control line
350: guiding means as a combined duct
352: Bus system
40, 42, 44: Media connection
400: Dispenser
410, 410 ', 410 ": distributor
420: Dispenser
50, 50 ': Nozzle for secondary cooling
52: Cross beam inner duct
60: intermediate space part
62: Insertion plate
100: Segment
110: segment frame

Claims (23)

CLAIMS 1. A roller device (1) for forming a segment (100) for guiding strands in a caster, comprising a cross beam (30) and at least one roller member (10), characterized in that the roller device (1)
In the crossbeam 30, guiding means 310, 320, 330, 340, 350 for three or more media are provided,
The roller device may be mounted on the frame of the casting machine as a pre-assembled module,
Each of the guiding means includes a cooling medium for cooling the roller bearings 20 and 22, a cooling medium for cooling the roller, a lubricant for lubricating the roller bearings 20 and 22, a cooling medium for secondary cooling, 342), compressed air media for pneumatic control lines, conduction media for electrical energy supply, conduction media for electrical control signals, conduction media for electrical measurement signals, conduction media for optical measurement signals, or electrical bus systems and optical bus systems 352) for guiding the one or more media out of the same media. delete CLAIMS 1. A roller device (1) for forming a segment (100) for guiding strands in a casting machine, comprising a cross beam (30) and at least one roller member (10), characterized in that the roller device (1)
Inside the crossbeam 30, a cooling medium for cooling the rollers, a cooling medium for the secondary cooling, a hydraulic medium for the hydraulic control line 342, a compressed air medium for the pneumatic control line, a conductive medium for supplying electric energy, One or more guiding means 310, 320, 330, and 330 for guiding one or more of the media, such as a conduction medium for control signals, a conduction medium for electrical measurement signals, a conduction medium for optical measurement signals, or an electrical or optical bus system 352, 340 and 350 are provided,
Characterized in that the roller device can be mounted on the frame of the casting machine as a pre-assembled module. A roller apparatus (1) comprising a cross beam (30) and at least one roller member (10) supported via roller bearings (20, 22) in the cross beam (30)
Within the crossbeam 30 there is provided one or more guiding means 310, 320, 330, 340, 350 for guiding one or more media and for forming a segment 100 for guiding the strand in the casting machine A roller device is provided,
The roller device may be mounted on the frame of the casting machine as a pre-assembled module,
Wherein the at least one guiding means comprises at least one of a cooling medium for cooling the roller, a cooling medium for the secondary cooling, a hydraulic medium for the hydraulic control line, a compressed air medium for the pneumatic control line, a conductive medium for supplying electric energy, A conductive medium for a measurement signal, a conductive medium for an optical measurement signal, or an electrical or optical bus system. delete 5. A method according to claim 3 or 4, further comprising guiding means for guiding at least one of a cooling medium for bearing cooling and a lubricant for lubricating the roller bearings (20, 22) in the cross beam . 5. A roller device according to claim 3 or 4, characterized in that guiding means for three or more media are provided in the crossbeam. 5. A method according to any one of the preceding claims, wherein at least one guiding means is in the form of a bore in the crossbeam (30) and is sealed with one or more covers in the crossbeam (30) In the form of ducts 52, in the form of reclosable ducts, in the form of open ducts, in the form of silicon-sealed ducts, in the form of media guides extending along the crossbeams and rigidly coupled to the crossbeams , And / or in the form of one or more conduits attached to the interior of the crossbeam (1). 5. A method according to any one of claims 1, 3 or 4, characterized in that at least one medium connection (40) provided in the front end face of the cross beam (30) is in communication with at least one guiding means Roller device (1). A method according to any one of the preceding claims, wherein one or more media connections (42, 44) provided on a side surface (34) of the cross beam (30) are in communication with one or more guiding means ≪ / RTI > 5. A method according to any one of the preceding claims, wherein one or more media connections (42, 44) provided on the back surface (38) of the cross beam (30) are in communication with one or more guiding means ≪ / RTI > 10. The roller apparatus according to claim 9, wherein the media connection portions (40) are formed as plugs, engaging or coupling members. 13. The roller apparatus according to claim 12, wherein the two or more media are in communication with the cross beam through individual plugs, engaging or coupling members. 5. A method according to any one of claims 1 to 4, wherein the media connection is such that the media connection is in communication with the corresponding media connection (42, 44) in the cross beam of the adjacent roller device (1) Is provided on the side surface (34) of the cross beam (30) in such a way as to enable direct coupling of the guiding devices corresponding to the two cross beam internal media connections. The apparatus according to any one of the preceding claims, wherein the crossbeam (30) is provided with one or more spray nozzles (50) in communication with the guiding means for spraying a secondary cooling medium on the slab , The one or more nozzles being provided on a side face (34) of the cross beam. The roller device according to any one of claims 1, 3 and 4, wherein guiding means are provided in the crossbeam for guiding signal lines for different measurement functions. The apparatus according to any one of the preceding claims, wherein the cross beam (30) forms a cooling chamber cover plate with an adjacent cross beam of adjacent roller apparatuses and forms a cross- Characterized in that it comprises an extension in the casting direction in such a way that it is substantially airtightly sealed. The roller device according to any one of claims 1, 3 or 4, characterized in that the roller device is preassembled and inspected and adjusted for its function prior to final assembly in the segment. The roller device according to any one of claims 1, 3 and 4, wherein the roller diameter of the roller members is 120 mm to 180 mm. A segment (100) for a casting machine, characterized in that in the segment (100) comprising a segment frame (110), two or more roller devices according to any one of claims 1, 3 or 4 are arranged in the segment frame (100). ≪ / RTI > 21. A segment according to claim 20, wherein plugs, engaging or coupling members are provided for feeding the media to the roller device. 21. A segment according to claim 20, characterized in that the casting radius formed by the segment is at most 4000 mm. 21. A segment according to claim 20, wherein a lesser number of segment crossbeams are disposed within the segment frame than roller devices are provided.

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