• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a control and / or regulating device for a support roller frame (2) of a continuous casting machine (1). The object of the invention is to simplify the wiring of the control and / or regulating device and to protect the transmitted signals as best as possible against interference from electromagnetic interference. This object is achieved in that each hydraulic cylinder (7a ... 7d) has a position sensor (8a ... 8d) with a bus interface (9a ... 9d); in that each roller segment (3, 3a ... 3l) is connected to a separate axle controller (10, 10a ... 10l) having a bus interface (9e) and a network connection (12, 12a ... 12g), the bus interface (9e) of the axis controller (10, 10a ... 10l) with the bus interfaces (9a ... 9d) of the position sensor (8a ... 8d) form a bus network (20); and that the continuous casting machine (1) has a common control (13) with a network connection (12), wherein the common control (13) and the separate axis controllers (10, 10a ... 10l) form a star-shaped network (21).
    公开号:AT515260A1
    申请号:T50835/2013
    申请日:2013-12-17
    公开日:2015-07-15
    发明作者:Alfred Ing Angerer；Christian Ing Enzinger；Nicole Dipl Ing Oberschmidleitner；Helmut Dipl Ing Wahl
    申请人:Primetals Technologies Austria GmbH；
    IPC主号:
    专利说明:

    description
    Control or regulating device for a support roll stand of a continuous casting machine
    Field of engineering
    The present invention relates to a control and / or regulating device for a support roll stand of a continuous casting machine and a method for replacing a roll segment in a support roll stand of a continuous casting machine.
    Specifically, the invention relates to a control and / or regulating device for a support roller frame of a continuous casting machine, wherein the support roller frame consists of several successive roller segments, which are each regulated via a support rollers supporting sub-frame and an opposite upper frame by means of paired hydraulic cylinders against each other.
    In addition, the invention relates to a method for replacing a roll segment in a support roll stand of a continuous casting machine, comprising the method steps: - removal of the roll segment from the support roll stand of the continuous casting machine; and - installation of a new roll segment in the support roll stand of the continuous casting machine.
    State of the art
    From EP 1 807 230 Bl a control and / or regulating device for a continuous casting machine is known. The support roll stand (also referred to in this document as strand guide) of the continuous casting machine consists of several successive roll segments (also called strand guide segments), which in each case via a supporting roles supporting sub-frame and an opposite upper frame by means of paired hydraulic cylinders against each other gere gelt are adjusted. To simplify the wiring of the roller segments each roller segment is assigned a separate axis controller on the stationary hall frame. The position signals of the hydraulic cylinders are first fed to a terminal box on the upper frame of the roller segment, then a cable package is led to separate axis controller on the stationary hall scaffold from the terminal box and finally the signals from all the axis controllers via a fieldbus to a PLC in a control room out. In addition, a valve stand is arranged on the stationary hall scaffolding.
    A disadvantage of the proposed solution is a) that the position signals are routed over a relatively long distance from the terminal box to the axis controller on the stationary hall scaffold, whereby the signals can be corrupted by electromagnetic fields (for example from an electromagnetic brake); and b) that hydraulic lines from the far-off valve stand on the stationary hall scaffolding must be performed to the roller segment, whereby the max. achievable dynamics of the hydraulic control is severely limited due to the long lines. Furthermore, the hydraulic system tends to vibrate, which suffers the accuracy of the position control of the hydraulic cylinder.
    As the wiring and the tubing of the control and / or regulating device can be further simplified without the aforementioned disadvantages occur, it is not clear from the document.
    Summary of the invention
    The object of the invention is to overcome the disadvantages of the prior art and to further simplify the wiring of the control and / or regulating device. In addition, the transmitted signals should be protected as best as possible against interference by electromagnetic interference. A further object of the invention is to present a robust and time-saving method for changing a roll segment in a support roll stand of a continuous casting machine.
    This object is achieved by the aforementioned control and / or regulating device in that each hydraulic cylinder has a position transmitter with a bus interface; that each roller segment is connected to a separate axis controller having a bus interface and a network connection, the bus interface of the axis controller with the bus interfaces of the position sensor (8a ... 8d) forming a bus network; and that the continuous casting machine has a common control with a network connection, wherein the common control and the separate axis controllers form a star-shaped network.
    According to the invention, each hydraulic cylinder has a position transmitter with a bus interface, so that the analog or digital position signals can already be transmitted by the position transmitter as bus signals. Since the communication in a bus network (for example, a CAN or Profibus network) can be carried out by error-detecting or error-correcting codes, a complicated shielding of the lines is unnecessary or reduced. Any transmission errors can be detected automatically or even corrected automatically. Due to the separation of the network architecture in a fast, listed as bus network part and a slow, as a star-shaped network (LAN) performed part, signals with high dynamics are only transmitted from the position encoder to the respective axis controller. Slow signals, e.g. changed setpoints for the position control of the hydraulic cylinders are given by the common control to the separate axis controllers via a separate star-shaped network (e.g., an Ethernet network). Furthermore, the separation of the network into two parts also allows maintaining the control of the hydraulic cylinders if the network communication between the common control and the separate axis controllers should fail once.
    Although the network between the common control and the separate axis controllers could also be designed as a bus network, it is disadvantageous that in the event of an interruption, the communication between a network part above the location of the interruption and a network part below the location of the interruption is no longer possible. According to the invention, a bus network is formed between the separate axis controller and at least the bus interfaces of the position encoders a separate bus network. Controls with multiple bus interfaces are known in the art.
    The movement of the hydraulic cylinders has a high dynamic when each hydraulic cylinder is connected to a valve (eg a switching, regulating or servo valve), the valve being arranged on the roller segment, in particular on the hydraulic cylinder, and the valve with the hydraulic cylinder connected via a, preferably short, tubing or piping.
    Since pressure transducers are usually very susceptible to interference, it is advantageous if each hydraulic cylinder has one or two pressure transducers for measuring one hydraulic pressure each, the pressure transducer being connected to a bus interface. In this embodiment, either the pressure transducer is connected to the bus interface of the position sensor, or the pressure transducer itself has a separate bus interface. Thus, the pressure transducer is integrated directly or indirectly in the bus network.
    In order to keep the line length between the roller segment and the axis controller short and to protect the axis controller against harsh environmental influences on the segment, it is advantageous if the separate axis controller, preferably immediately adjacent to the roller segment on the technological support construction is arranged. Under the technological support structure to be understood in this application, the support structure of the continuous casting machine (and not the hall in which the continuous casting machine is arranged), which consists, for example. Concrete, steel or the like.
    In order to be able to protect a bus interface or a network connection from dust, moisture, etc., it is advantageous if the bus interface or the network connection has an instrument air or nitrogen gas supply, whereby the bus interface or the network connection can be maintained at an elevated pressure level with respect to the environment , This prevents the penetration of foreign particles or particles or moisture.
    In order to keep the length of hose or hose between the hydraulic supply and the roll stand short, it makes sense to arrange the hydraulic supply of the continuous casting machine on an intermediate stage (and not in the basement as usual in the prior art) of the continuous casting machine.
    In the latter embodiment, it is expedient if the continuous casting machine has a common valve position for a plurality of roller segments on the intermediate stage, wherein the hydraulic supply to the common valve state and the common valve state is hydraulically connected to the valves on the roller segment. The connection between the common valve state and the valves on the roller segment is preferably via releasable quick-release couplings.
    Alternatively, a separate valve stand is arranged on the technological support structure for each roller segment, wherein the hydraulic supply to the separate valve stand and the separate valve stand with the valves on the roller segment is hydraulically connected. The connection between the valve stem and the valves on the roller segment is preferably via releasable quick-release couplings.
    The common or separate valve stand releases or disconnects the hydraulic supply to one or more roller segments. As a result, the change of a roller segment can be done safely.
    The reliability of bus communication can be increased if each separate axis controller and each hydraulic cylinder has two or more than two bus interfaces, with the separate axis controller and position encoders forming two or more than two independent bus networks. For rapid installation and removal of a roller segment, it is advantageous if each bus interface of a hydraulic cylinder has a permanent memory for axis-specific data, such as calibration data, operating hours, etc. Thus, a new roll segment outside the continuous casting machine can be pre-calibrated, the calibration data stored on the permanent memory, and after installation of the roll segment, the calibration data are automatically read into the separate axis controller.
    Simple control of the valves on the roller segment is feasible if the valves have a bus interface, wherein the bus interface of the separate axis controller with the bus interfaces of the valves and the position encoder form a bus network. Thus, the valves are integrated into the bus network.
    In the latter embodiment, it is advantageous if each valve has a bus interface. Alternatively, the (typically four) valves on the roller segment may have a common bus interface, with the common bus interface being analog or digitally connected to the valves.
    In any case, it is advantageous if the bus network and the network represent two separate networks, and preferably the bus network as a bus line network, such as a CAN or
    Profibus, and the star-shaped network as a LAN network are formed.
    The object according to the invention is also achieved by a method for replacing a roll segment in a support roll stand of a continuous casting machine, comprising the following method steps: separating a bus network between the separate axis regulator and the roll segment and separating hydraulic connections between the valve stand and the roll segment; - Removal of the roller segment from the support roller frame of the continuous casting machine; - Installation of a new roller segment in the support roller frame of the continuous casting machine, wherein the new roller segment via a subframe and an opposite upper frame by means of paired hydraulic cylinders against each other is regulated, and each hydraulic cylinder having a bus interface with a permanent memory containing at least calibration data for the hydraulic cylinder; Connecting the bus network between the separate axle regulator and the new roller segment and connecting the hydraulic connections between the valve stem and the new roller segment; - Reading the calibration data of the hydraulic cylinders of the new roller segment from the permanent memories in the separate axis controller; - Controlling of the separate axis controller by the common control, wherein the separate axis controller, taking into account the calibration data outputs a control variable signal to a valve on the new role segment, so that the actual value of the hydraulic cylinder corresponds to the desired value as possible.
    Before removing the roller segment, the bus connections between the separate axle controller and the roller segment are disconnected. In addition, the hydraulic connections between the valve stem and the roller segment are separated. Subsequently, the roller segment, typically via rails, removed from the support roller frame. Following this, a new roller segment is installed in the support roller frame, wherein the new roller segment via a sub-frame and an opposite upper frame by means of paired hydraulic cylinder is controlled against each other can be adjusted. In addition, each hydraulic cylinder has a bus interface with a permanent memory containing at least calibration data for the hydraulic cylinder. After installing the pulley segment, the bus network is reconnected between the separate axle governor and the new pulley segment and the hydraulic connections between the valve stem and the new pulley segment. After connecting the bus network, the calibration data of the hydraulic cylinders of the new roller segment are read from the permanent memories in the separate axis controller, the separate axis controller, taking into account the calibration data each output a control variable signal to a valve on the new role segment, so that the actual value of the hydraulic cylinder as close as possible to the target value. By the target or actual value is typically meant a position (in a position control) or a pressure (in a force control). It does not matter whether the permanent memory is connected to the bus interface of the position transmitter or the pressure transmitter. The only important thing is that the permanent, i. non-volatile, memory is assigned to a hydraulic cylinder on the roller segment.
    In the method according to the invention, it is expedient if the new roll segment is pre-calibrated outside the continuous casting installation prior to installation and the calibration data are stored in the permanent memory.
    Brief description of the drawings
    Further advantages and features of the present invention will become apparent from the following description of not a restrictive embodiments, wherein the following figures show:
    1 shows a schematic representation of a continuous casting machine for the production of slabs in Oberflurbauweise
    FIG. 2 shows a detail from FIG. 1
    4 shows a perspective view of a strand guide segment
    5 shows a detail from FIG. 4
    6 shows a schematic representation of the control and / or regulating device according to the invention
    7 shows a partially sectioned illustration of a hydraulic cylinder of a strand guide segment
    3: a variant of FIG. 7
    Figures 8, 9 and 10: three variants of the bus and network cabling of the control or regulating device according to the invention
    Description of the embodiments
    1 shows a continuous casting machine 1 for the production of steel slabs S in a perspective view. The liquid steel is fed to the mold 14 of the continuous casting machine 1 via a ladle turret 100 and a casting distributor. In the mold 14, a partially solid strand S is formed, which is supported, guided and further cooled in the subsequent support roller frame 2 and the strand guide. For this purpose, the strand guide 2 more strand guide or. Roller segments 3a to 31 on. The continuous casting machine 1 is located in a hall, which is supported relative to the foundation via a hall frame with multiple I-beams 111. The continuous casting machine 1 itself is supported on a technological support structure 11. For example, the individual strand guide segments 3a... 3i can be extended or retracted from the strand guide 2 via rails 115 resting against the support structure 11. On the casting platform also a cold extruder 105 is moved, which can transport a cold leg, not shown here from the horizontal outlet region of the continuous casting machine 1 back to the mold 14.
    2 shows the arrangement of the separate axis controller 10 of Figure 1. According to the invention, each roller segment 3, a separate axis controller 10, which is arranged on the technological support structure 11 assigned. In order to keep the wiring costs low, the axis controller 10 is disposed immediately adjacent to the strand guide segment 3. Thus, all control and regulation functions for the strand guide segment 3 can be performed by the associated separate axis controller 10. Each axle controller 10 is connected to the positioner 8a ... 8d of the hydraulic cylinder 7a ... 7d on the roller segment 3 via a bus network 20 at least. All axis controller 10a ... l01 are connected to the common control 13 of the continuous casting machine 1 via a star-shaped network (LAN). The hydraulic supply 23 with the common valve position 18 for the roller segments 3 is arranged on an intermediate stage 24 of the continuous casting machine 1. From the common valve 18, the roller segments 3 are supplied hydraulically.
    FIG. 4 shows a roller segment 3 from FIGS. 1-2 closer. Each roller segment 3 has an upper frame 6 and a lower frame 5, each with a plurality of support rollers 4. The upper frame 6 is controlled relative to the opposite sub-frame 5 via four hydraulic cylinders 7. The strand, not shown here, is cooled by a plurality of spray nozzles 120 distributed over the width. In the position control, the actual position of a hydraulic cylinder 7 via a position sensor 8, here a magnetostrictive position sensor, measured and the measured value via a CAN bus network the
    Axle controller 10 supplied. In order to better recognize the position sensor 8, the protective cap of a position sensor 8 has been removed. The axis controller 10 compares the actual value of the position of the position sensor with a desired value and determines the control error e between the setpoint and the actual value. The controller stored in the axis controller 10 determines, based on the control error e and with the aid of a control law, a manipulated variable which is transmitted to a hydraulic valve 16 connected fluidically to the hydraulic cylinder 7. Thus, the actual value is brought to the target value of the position. According to the invention, the axis controller 10, the position sensor 8 and the valves 16 (here switching, proportional or servo valves) of the hydraulic cylinder 7 form a bus network. By a bus network, the cabling effort is greatly reduced because the bus interfaces 9 of the participating devices are connected in series. The hydraulic cylinders 7 associated valves 16 are also arranged on the roller segment 3.
    FIG. 5 shows a hydraulic cylinder 8 of the roller segment 3 from FIG. 4 in more detail. It can be seen that the position sensor 8 for communication with the axis controller 10 has two bus interfaces 9 and in the interior of the protective housing, a magnet 26 without contact encloses a linkage 32. By the position sensor 8, the position of the hydraulic cylinder 7 can be determined without contact. Compared to the prior art, there is no contact between the position sensor and the hydraulic fluid.
    FIG. 6 shows the network configuration of the control and / or regulating device according to the invention. As already mentioned above, the axle controller 10, the position sensors 8a... 8d, the valves 16a... 16 and a separate valve stand 17 for the roller stand 3 form a closed bus network 20. The separate axis controllers 10a... 101 form a star-shaped network 20 with the common controller 13 of the continuous casting machine 1. According to the figure, the separate axis controllers 10a... L01 (only two axis controllers 10a, 10b are shown in a simplified manner) are connected to the common controller 13 via a router or switch 27. By means of this network configuration, additional hardware (here a process computer 29, which calculates a thermodynamic process model for the line in real time) and a substitute computer 28 - which ensures further operation in the event of a failure of the common controller 13 - can also be used with the control and / or Control device are connected.
    FIG. 7 shows a hydraulic cylinder 7 of a roller segment 3 closer. The hydraulic cylinder 7 has in addition to the position sensor 8 and two pressure transmitter 22, each with a bus interface 9. Thus, the axis controller, not shown, in addition to the position control and a pressure or force control for the hydraulic cylinder 7 of the roller segment 3 perform, which can be concluded on the measured pressures and the known areas of the piston of the hydraulic cylinder 3 on the force ratios in the hydraulic cylinder 7.
    In the prior art, the displacement measuring system is usually installed directly in the cylinder, where it is the hydraulic fluid and thus unfavorable environmental conditions (high pressures, high temperatures and chemical influences by the hot hydraulic fluid) is exposed. This increases the demands on the position measuring system regarding robustness. By installing the position measuring system in the hydraulic cylinder, the distance measuring system is difficult to access; This therefore has a negative effect on the ease of maintenance.
    In addition, prior art displacement gauges typically use analog path measuring systems or digital interface measuring systems (SSI, Gray Code...). These displacement measuring systems are not capable of storing data / information in the displacement measuring system (for example calibration data). Calibration data can therefore not be stored directly on the component itself, but must be made available, for example, via a database system of the common control (the so-called control system). If a segment is replaced, the calibration data must be manually assigned to the hydraulic cylinder. This is complex and can lead to problems and incorrect calibration data, since the component is not permanently connected to its calibration data. In addition, each sensor must be individually cabled and connected to the controller (axis controller), resulting in a high cabling overhead. If pressure sensors are also used, the cabling effort continues to increase (2 pressure sensors per cylinder). Sensors with the mentioned interfaces also do not have the possibility of error detection or correction, as is possible with bus-capable sensors.
    Finally, prior art pressure sensors typically use analog sensors (4-20 mA, 0-20 mA, 0-10 V). The wiring effort increases as previously mentioned. With the increased number of terminal points and the susceptibility to errors increases by mechanical release of the compound or corrosion. As the length of the wiring increases, so does the spread for any sources of electromagnetic interference that can adversely affect transmission.
    According to Figure 7, the distance measuring system 8 is easily accessible outside the cylinder chamber of the hydraulic cylinder 3 (and thus also outside the hot hydraulic fluid) installed. As a result, the displacement measuring system 8 need only be very robust; It is also easily accessible. The path measuring system 8 with an integrated non-volatile memory (e.g., for calibration data) and a bus interface 9 is bus-capable and can transmit data bidirectionally over a bus (e.g., CAN or professional bus). The hydraulic cylinder 3 has two pressure sensors 22 with a bus interface 9, so that the pressure signals for both chamber pressures of the hydraulic cylinder 3 (and thus the force ratios) can be transmitted to the axis controller 10 with minimal cabling.
    FIG. 3 shows a variant of FIG. 7. Since the pressure sensors 22 of FIG. 7 with bus interfaces 9 are still relatively expensive, an alternative solution was sought by the applicant and found. Since the bus-capable position measuring systems 8 of the hydraulic cylinder 3 have two analog inputs, conventional pressure sensors 22 with an analog interface can be connected to the bus-capable position measuring system 8 and the signals for position and chamber pressures can be transmitted via the bus. This cheap analogue pressure transducer can be used, while still the cabling and the Einstreustrecke be minimized. Since the hydraulic cylinder typically applies a relatively high clamping force during operation, the displacement measuring system 8 can also have only one analog input. Also in this case, the axis controller 10 can perform a pressure or force control of the hydraulic cylinder 3.
    FIG. 8 shows a first variant of the control and / or regulating device according to the invention for a support roll stand of a continuous casting machine. As shown in FIGS. 1-2, the support roller frame comprises several successive roller segments 3. A single roller segment 3 is shown schematically in a plan view. Each roller segment 3 has a support rollers 4 supporting sub-frame 5 and an opposite upper frame 6, wherein the upper frame 6 relative to the sub-frame 6 by four, arranged in pairs hydraulic cylinders 7a ... 7d is adjusted (see also the illustration of a roller segment 3 in Fig. 4 ). As shown in FIG. 8, each hydraulic cylinder 7a... 7d has a position transmitter 8a... 8d with a bus interface 9a... 9d (here a CAN interface). The position sensors 8a... 8d form a bus network 20 with the bus interface 9e of the axis controller 10, which is assigned to the roller segment 3. This embodiment optimizes the cabling of the position sensors to the axis controller. The continuous casting machine 1 itself has a common control 13 in the form of a PC. All axis controllers 10 (only a single one is shown in FIG. 8 for reasons of clarity, but see FIGS. 1-2) of the roller segments 3 are connected to the common controller 13 via a star-shaped LAN network. Specifically, the axis controllers 10 and the common controller 13 are connected to a router or switch 27 via network cables 31, respectively. By the solution according to the invention, the bus networks for the roller segments 3 are separated from each other. The common control 13 in turn forms a separate LAN network 21 with the axis controllers 10. An advantage of the star-shaped LAN network is that a failure of a network cable 31 between an axis controller 10 and the common controller 13 affects only a single role segment; the other segments continue working undisturbed. However, even in this case, the affected segment can continue to maintain an emergency operation because only the communication between the common controller 13 and the axis controller 10, but not the communication from the axis controller 10 to the position encoders 8a ... 8d, is concerned.
    FIG. 9 shows a second variant of the control and / or regulating device according to the invention. In contrast to FIG. 8, besides the axis controller 10 and the position sensors 8a... 8d, the hydraulic cylinders 7a... 7d of the roller segment 3 are also the hydraulic valves 16a... 16d part of the bus network 20. The connection of all the axis controllers 10 to the common control 13 takes place, as in FIG. 8, by means of a star-shaped network 21. Each roller segment 3 is also assigned a separate valve stand 17 on the technological support structure 11 of the continuous casting machine 1. The valves of the separate valve 17 are also controlled by the axis controller 10 via the bus network 20. The separate valve 17 switches the pump pressure P of a hydraulic supply, not shown, usually in a supply room within the techn. Support structure 11 or in the basement, is located to the valves 16a ... l6d on the roller segment 3 by. Before a segment change, the valve stand 17 is de-energized, so that the valves 16a ... l6d are depressurized, i. the tank pressure T is present. Then, not shown hydraulic lines between the valve body 17 and the valves 16a ... l6d, preferably via quick couplings, separated. Finally, the bus cable 30 between the axis controller 10 and the roller segment 3 is separated. In Figures 8-10, the open ends of the bus network 20 terminating resistors 15 to prevent unwanted reflections. This improves the quality of data transmission over the bus network 20.
    10 shows a third variant of the control and / or regulating device according to the invention. In contrast to FIG. 9, the valves 16a... 16d on the roller segment 3 and the valves 17 on the separate valve stand 17 are connected analogously to the separate axle regulator 10. For this purpose, cables from the valves 16a ... l6d on the roller segment 3 and the valves on the separate valve stand 17 to a connector 40 (here a so-called. Harting connector), and the connector 40 to an analog input 35 on the axis controller 10 out , The bus cable 30, shown here thickly, which connects the position sensors 8a... 8d to the axis controller 10, is detachably connected to the separate axis controller 10 by the connector 40. An advantage of this embodiment is that when replacing the roller segment 3, only the plug 40 must be separated to electrically disconnect the roller segment 3 from the axis controller 10. It would also be possible to digitally connect the valves 16a... 16d and the valves on the separate valve stand 17 to the axis controller 10. In this case, the analog input 35 would be a digital input. Other electrical connections, e.g. for electrical supply, can be connected via the connector 40.
    When changing a roller segment 3 of the strand guide 2, the procedure is as follows: First, the bus network 20 between the separate axis controller 10, which is assigned to the roller segment 3, and the roller segment 3 and the hydraulic connections between the valve stand 17 and the roller segment 3 separated. Most conveniently, this is done by unplugging a single connector 40 (see FIG. 10). Subsequently, the roller segment 3 is removed from the support roller frame 2 of the continuous casting machine 1. This is usually done by a crane, which extends the roller segment 3 on rails 115 (see Fig 1-2) from the support roller frame 2. The extended roll segment is typically adjacent to the
    Continuous casting machine 1 again repaired. An already repaired roller segment is referred to as a new roller segment 3 '. When repairing strand guide rollers 4 or spray nozzles 120 are exchanged if necessary. At least when exchanging strand guide rollers 4, it is necessary to recalibrate the roller segment 3. For this purpose, between the upper and the lower frame 6, 5 of the roller segment 3, a strand section with a defined thickness is introduced and the upper frame 6 is moved relative to the lower frame 5 by means of the four hydraulic cylinders 7 to stop. The position values of the individual position sensors 8a... 8d of the hydraulic cylinders 7a... 7d are read out and stored as calibration data in a nonvolatile memory 19 of the respective bus interfaces 9a... 9d of the position sensors. After installation of the new roller segment 3 'in the support roller frame 2 of the continuous casting machine 1, the bus network 20 between the separate axis controller 10, which is now the new roller segment 3' assigned, and the new roller segment 3 'and the hydraulic connections between the valve 17 and the new role segment 3 'reconnected. Subsequently, the calibration data of the hydraulic cylinders 7a ... 7d of the new roller segment 3 'are read out of the permanent memories 19 into the separate axis controller 10 and stored there. If necessary, the valves 16a ... l6d and the valve of the separate valve stand 17 are again electrically connected to the axis regulator again. In operation, the separate axis controller 10 is driven by the common control 13, wherein the separate axis controller 10, taking into account the calibration data each output a control variable signal to a valve 16 on the new roll segment 3 ', so that the actual position of a position sensor 16a ... l6d of the hydraulic cylinder 7a ... 7d corresponds to the desired position as accurately as possible.
    While the invention has been further illustrated and described in detail by the preferred embodiments, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.
    REFERENCE SIGNS LIST 1 continuous casting machine 2 supporting roll stand 3, 3a ... 31 roll segment 3 'new roll segment 4 support roll 5 lower frame 6 upper frame 7, 7a ... 7d hydraulic cylinder 8, 8a ... 8d position transmitter 9, 9a ... 9e bus interface 10, 10a ... 101 separate axis controller 11 technological support structure 12 network connection 13 common control 14 mold 15 terminator 16, 16a ... l6d valve 17 separate valve 18 valve 19 permanent memory 20 bus network 21 star network 22 pressure transmitter 23 hydraulic supply 24 intermediate stage 25 hydraulic quick coupling 26 magnet 27 Router or switch 28 Maintenance computer 30 Bus cable 31 Network cable 32 Linkage 35 Analog input 40 Plug connection 100 Ladle turret 105 Cold extruded cart
    Ill carrier 115 Rails 120 Spray nozzle P Pump pressure R Casting direction S Line T Tank pressure
    权利要求:
    Claims (14)
    [1]
    Claims 1. Control or regulating device for a support roll stand (2) of a continuous casting machine (1), wherein the support roll stand (2) consists of a plurality of successive roll segments (3, 3a ... 3f), each supporting one of the support rollers (4) Subframe (5) and an opposite upper frame (6) by means of paired hydraulic cylinders (7a ... 7d) are controlled against each other can be adjusted, characterized in that each hydraulic cylinder (7a ... 7d) with a position sensor (8a ... 8d) a bus interface (9a ... 9d); in that each roller segment (3, 3a ... 31) is connected to a separate axle controller (10, 10a ... l01) having a bus interface (9e) and a network connection (12, 12a ... 12g), the Bus interface (9e) of the axis controller (10, 10a ... 101) with the bus interfaces (9a ... 9d) of the position sensor (8a ... 8d) form a bus network (20); and that the continuous casting machine (1) has a common control (13) with a network connection (12), wherein the common control (13) and the separate axis controllers (10, 10a ... 101) form a star-shaped network (21).
    [2]
    2. Device according to claim 1, characterized in that each hydraulic cylinder (7a ... 7d) with a valve (16) is connected, wherein the valve (16) on the roller segment (3, 3a ... 3f), in particular on the hydraulic cylinder (7a ... 7d) is arranged, and the valve (16) with the hydraulic cylinder (7a ... 7d) via a, preferably short, tubing or piping is connected.
    [3]
    3. Device according to one of the preceding claims, characterized in that each hydraulic cylinder (7a ... 7d) one or two pressure transducer (22) for measuring each of a hydraulic pressure, wherein the pressure transducer (22) with a bus interface (9, 9a ... 9e) is connected.
    [4]
    4. Device according to one of the preceding claims, characterized in that the separate axis controller (10, 10a ... 101), preferably directly, next to the roller segment (3, 3a ... 3f) on the technological support structure (11) is arranged ,
    [5]
    5. Device according to one of the preceding claims, characterized in that the continuous casting machine (1) has a hydraulic supply (23) on an intermediate stage (24) of the continuous casting machine (1).
    [6]
    6. Device according to claim 5, characterized in that the continuous casting machine (1) has a valve stand (18) on the intermediate stage (24), wherein the hydraulic supply (23) with the valve stem (18), and the valve stem (18) with the Valves (16) on the roller segment (3,3a ... 3f) hydraulically, preferably via releasable quick couplings (25) is connected.
    [7]
    7. Device according to claim 6, characterized in that for each roller segment (3,3a ... 3f) a separate valve stand (17) on the technological support structure (11) is arranged, wherein the hydraulic supply (23) with the separate valve stand ( 17), and the separate valve stem (17) is hydraulically connected to the valves (16) on the roller segment.
    [8]
    8. Device according to one of the preceding claims, characterized in that each separate axis controller (10, 10a ... 101) and each hydraulic cylinder (7, 7a ... 7d) have a plurality of bus interfaces, wherein the separate axis controller (10, 10a. ..101) with the position encoders form several independent bus networks (20).
    [9]
    9. Device according to one of the preceding claims, characterized in that each bus interface of a hydraulic cylinder has a permanent memory (19) for axis-specific data, such as calibration data, operating hours, etc., having.
    [10]
    10. Device according to one of the preceding claims, characterized in that the valves (16) on the roller segment (3, 3a., 3f) have a bus interface (9), wherein the bus interface (9) of the separate axis controller (10) the bus interface (s) (9) of the valves (16) forms a bus network (20).
    [11]
    11. Device according to claim 10, characterized in that each valve (16) has a bus interface (9).
    [12]
    12. Device according to one of the preceding claims, characterized in that the bus network (20) and the star-shaped network (21) represent two separate networks, and preferably the bus network (20) as a bus line network, such as a CAN or Profibus, and the star-shaped network (21) are designed as LAN.
    [13]
    13. A method for replacing a roller segment (3, 3a ... 3f) in a support roller frame (2) of a continuous casting machine (1), comprising the method steps: - separating a bus network between the separate axis controller (10, 10a ... 101) and the roller segment (3, 3a ... 3f) and separating hydraulic connections between the valve stand (17, 18) and the roller segment (3, 3a ... 3f); - Removal of the roller segment (3, 3a ... 3f) from the support roller frame (2) of the continuous casting machine (1); - Installation of a new roller segment (3 ') in the support roller frame (2) of the continuous casting machine (1), wherein the new roller segment (3') via a lower frame (5) and an opposite upper frame (6) by means of paired hydraulic cylinders (7a .. .7d) can be adjusted in relation to one another, and each hydraulic cylinder (7a ... 7d) has a bus interface (9a ... 9d) with a permanent memory (20) which contains at least calibration data for the hydraulic cylinder (7a ... 7d) ; - connecting the bus network between the separate axle controller (10, 10a ... l01) and the new roller segment (3 ') and connecting the hydraulic connections between the valve stand (17, 18) and the new roller segment (3'); - Reading the calibration data of the hydraulic cylinder (7a ... 7d) of the new roller segment (3 ') from the permanent memories (19) in the separate axis controller (10, 10a ... l01); - Controlling the separate axis controller (10, 10a ... 101) by the common control (13), wherein the separate axis controller (10, 10a ... 101) taking into account the calibration data in each case an actuating variable signal to a valve (16) on the new roller segment (3 ') outputs, so that the actual value of the hydraulic cylinder (7,7a ... 7d) corresponds to the desired value as possible.
    [14]
    14. The method according to claim 13, characterized in that prior to installation, the new roll segment (3 ') outside the continuous casting (1) is precalibrated and the calibration data are stored in the permanent memory.
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    同族专利:
    公开号 | 公开日
    CN106061652B|2019-05-17|
    WO2015091080A1|2015-06-25|
    EP3083104B1|2020-06-17|
    CN106061652A|2016-10-26|
    EP3083104A1|2016-10-26|
    AT515260B1|2017-12-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19836843A1|1998-08-14|2000-02-17|Schloemann Siemag Ag|Apparatus for hydraulic setting of the rolls of billet guide segments of a continuous casting installation comprises switching valves connecting the hydraulic cylinder units to pressure sources and sinks|
    WO2003051558A2|2001-12-18|2003-06-26|Sms Demag Aktiengesellschaft|Feed opening adjustment of segments for continuous casting systems|
    EP1475169A1|2003-05-03|2004-11-10|SMS Demag Aktiengesellschaft|Supporting roll stand with Field bus for continuous carting machines|
    WO2006050868A1|2004-11-09|2006-05-18|Sms Demag Ag|Control and/or regulating device for a supporting roll frame of a continuous casting device for metals, especially steel|
    WO2006058788A1|2004-12-03|2006-06-08|Sms Demag Ag|Control and/or regulation device for an elevating platform of a continuous casting machine for liquid metals, especially liquid steel material, said platform supporting a continuous casting die|
    DE10222147A1|2002-05-17|2003-12-04|Siemens Ag|Process for the transmission of data telegrams and automation components|
    DE102004058355A1|2004-12-03|2006-06-14|Sms Demag Ag|Continuous casting machine with a continuous casting mold for the casting of liquid metals, in particular of steel materials|
    CN103203440B|2013-03-28|2015-11-25|中国重型机械研究院股份公司|Continuous casting machine fan-shaped segment imports and exports the on-line monitoring system of roll gap|AT516440B1|2014-10-28|2017-03-15|Primetals Technologies Austria GmbH|Strand guide segment, strand guiding system and method of configuring such a strand guiding system|
    DE102017219740A1|2017-11-07|2019-05-09|Sms Group Gmbh|Strand guide segment and continuous casting plant|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50835/2013A|AT515260B1|2013-12-17|2013-12-17|Control or regulating device for a support roll stand of a continuous casting machine|ATA50835/2013A| AT515260B1|2013-12-17|2013-12-17|Control or regulating device for a support roll stand of a continuous casting machine|
    EP14816163.1A| EP3083104B1|2013-12-17|2014-12-09|Open or closed-loop control device for a supporting-roller frame of a continuous casting machine|
    PCT/EP2014/076946| WO2015091080A1|2013-12-17|2014-12-09|Open or closed-loop control device for a supporting-roller frame of a continuous casting machine|
    CN201480069397.8A| CN106061652B|2013-12-17|2014-12-09|Supporting roller support for conticaster controls or regulates device|
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