• 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:
    An arrangement for regulating a rolling mill for metal rolling, the work rolls of which are supported by guided roll shells of a lower controlled deflection roll and an upper controlled deflection roll, the roll shells being supported by means of hydrostatic pressure or support elements upon a related roll support or beam. First regulation circuits are provided for regulating the pressure of the pressure or support elements of the controlled deflection rolls. A second regulation circuit for the position of the roll shells overrides the first regulation circuits, so that adjustment output magnitudes of the second regulation circuit can be impressed as reference or set values or adjustment magnitudes upon the first regulation circuits. There is also provided a third regulation circuit for the rolling force or the roll nip which overrides the second regulation circuit, so that the adjustment output magnitude of the third regulation circuit can be impressed as a reference or set value or adjustment magnitude upon the second regulation circuit.
    公开号:SU1080732A3
    申请号:SU823398375
    申请日:1982-03-09
    公开日:1984-03-15
    发明作者:Глаттфельдер Адольф；Гюттингер Хайнц；Мерккс Йозеф
    申请人:Эшер Висс Аг (Фирма)；
    IPC主号:
    专利说明:

    the regulator is connected to the input of the actuator through an amplifier, and the input to the output of the comparison element.
    4. The device according to claims 1 to 3, about which the control loop for adjusting the position of one end of the support roll includes a sensor and sensor for the position of the end of the support roll, a converter, a PD controller, a reference element and a PI controller for the end position of the support roll, the sensor of the position of the end of the support roll through the serial follower is connected. The converter and the PD controller are connected to one of the inputs of the comparison element, the other input of which is connected to the output of the position adjuster, the output of the reference element is connected to the input of the PI regulation RA: position of the end of the backup rolls.
    5. The device according to squares 1-4, about tl and h and y. This is because the regulation of the size of the working roll solution contains an adder, a switch, four comparison elements, four P-regulators, two transport lag units, a sensor and a roll gap setting unit, minimum and maximum rolling force limiting units, a sensor and a 3D sensor rolling forces, setting devices for maximum to minimum values of efforts. rolling, four converters for sensors and setting devices, a functional converter and an I-controller for the position of the work roll solution, The input of the latter is connected to the output of the minimum rolling force limit unit, one of the inputs of which is connected through the first P controller to the output of the first reference element, one of the inputs of which is connected to the minimum rolling force setting and the other to the output of the first transport block. delay, the input of which is through the converter
    connected to the output of the rolling force sensor, the second input of the minimum force limit limiting unit is connected to the output of the maximum force limiting unit output, one of the inputs of which is connected to the output of the second reference element through the second P controller, the inputs of which are connected to the outputs of the first block, respectively the transport lag and setpoint adjuster of the maximum rolling force; another input of the block for limiting the maximum value of the rolling force is connected through a switch, and The P-controller with the output of the third reference element, one of the inputs of which through the second transport lag unit, the functional converter and the converter are connected to the output of the roll gap sensor, the other input of the third comparison element is connected to the output of the adder, whose inputs are connected to the output of the thickness control loop1 lanes and through a converter with a roll gap setting unit; the output of the rolling force setting device is connected to one of the inputs of the fourth comparison element through a converter , The other input of which is connected to the output c of the first block of the transport lag fourth block output from the fourth P-controller and the switch is connected to the input of limiting the maximum value of the rolling force.
    6. The device according to claims 1-5, about tl and the fact that the strip thickness control loop contains strip thickness and velocity meters, two transducers, a multiplier and an I-band thickness regulator, the latter input connected to the multiplier output, the inputs which through converters are connected to the outputs of the gauges thickness and speed of the strip.
    one ;
    The invention relates to metallurgy, in particular, to rolling production, and is intended to control a quarto rolling mill.
    Known flocks containing rolling mill with hydraulic work rolls, the supporting rolls of which are made in the form of hollow cylinders, taken to the working vessels using hydraulic support elements, the latter being placed along two traverses, the bottom of which is mounted on stationary cushions and the top is on movable by means of a pressure device, in order to obtain rolled metal with specified geometrical dimensions C1J.
    The purpose of the invention is to improve the accuracy of the geometrical dimensions of the rolled sheet on the specified type of mill.
    JQ The goal is achieved by the device for controlling a quarto rolling mill, which is a rolling stand with hydraulic work rolls, the support rolls of which are made in the form of hollow cylinders pressed to the work rolls by means of hydraulic support elements, the latter being placed along two traces, the bottom of which is mounted on stationary cushions, and the top one is mounted on pressure-operated devices, additionally contains pressure correction sensors according to the number of hydraulic reference el units, a distribution unit for setting the nominal pressure, pressure control circuits for the working fluid in each of the hydraulic support elements, the position of the ends of the support rolls, the solution size of the work rolls or the rolling force, and the strip thickness, the output of the strip thickness control loop is connected to the inlets of the control contours the rolls of the work rolls or the rolling auger, the outputs of which are connected to the inputs of the nominal pressure distribution unit, the other inputs of which are connected to the outputs Contours position adjustment con ATC support rollers and the pressure sensor-compensation tion, the outputs of distribution unit assignments nominal pressure circuits connected to the inputs and regularity Rovani davleniy.rabochey fluid in each of the hydraulic support elements. The nominal pressure task distribution block contains functional converters in an amount equal to the number of hydraulic support elements, adders, two switches, buses for the upper and lower support rolls, to which the functional converters are connected, the output of each of which is connected to one of the inputs of the corresponding adder, the other input is connected to the output of the corresponding pressure correction sensor, and the output of the adder is the output of the nominal reference distribution unit The lower roll tire is connected to the outputs of two adders, the inputs of which are connected to the outlets of the adjustable position of the ends of the lower support roll and the control loop of the solution of the working rolls. The tire of the upper roll is connected to the output of the control loop of the ends of the upper support roll and to the output. control loop size of the work rolls. The working fluid pressure control loop in each of the hydraulic support elements contains a PID controller, an amplifier, an actuator, a pressure gauge, a converter and a reference element, the inputs of which are connected to the outputs of the nominal pressure distribution unit and the converter that is connected to the output of the pressure gauge. . the output of the PID controller through the amplifier is connected to the input of the actuator, and the input to the output of the comparison element. A contour for adjusting the position of one end of the backup roll contains. the sensor and sensor of the position of the ends of the support roll, the transducer, the controller, the reference element and the PI controller of the position of the end of the support roll and the comparator, wherein the sensor of the position of the end of the support roll is connected through the series-connected converter and the PD controller. One of the inputs of the comparison element, the other input of which is connected to the output of the position setter, the output of the reference element is connected to the input of the PI controller of the position of the end of the support roll, the output of the PI controller of the position of the ends of the support roll is the output of the control loop of the end of the shell. The control loop for adjusting the size of the working rolls or rolling force contains an adder, a switch, four comparison elements, four preloadors, two transport lag units, a sensor and a roll gap setting device, minimum and maximum rolling force limiting blocks, a rolling force sensor and setting generator, maximum setting gears and minimum rolling force values, four transducers for sensors and setters, a functional transducer and an I-controller for the position of the working roll solution, The input of the latter is connected to the output of the minimum rolling force limit unit, one of the inputs of which is connected to the output of the first reference element through the first U-regulator of the mountains, one of the inputs of which is connected to the minimum rolling force setting and the other to the output of the first transport unit the delay, the input of which through the converter is connected to the output of the force-rolling sensor, the second input of the block limiting the minimum value of the rolling force is connected to the output of the limiting block maximum The rolling force value, one of the inputs of which through the second pregulator is connected to the output of the second reference element, the inputs of which are connected to the outputs of the first transport lag unit and the maximum rolling force setting unit, the other input of the maximum value limiting force unit, is connected through a switch and the third P-controller with the output of the third element of the comparison, one of whose inputs through
    The second transport lag unit, the functional converter converter is connected to the output of the transfer roller, another input of the third comparison element is connected to the output of the adder, inputs .. 5 of which are connected to the output of the strip thickness control loop and through the converter to the roll gap setting unit, the output of the rolling force generator through the converter U is connected to one of the inputs of the fourth element of the comparison, the other input of which is connected to the output of the first transport lag block, one to the fourth element of the comparison rez the fourth p-controller and the switch is connected to the input of the block limiting the maximum value of the rolling force.
    Thickness control contour polo--. Sy contains gauges for thickness and speed of the strip, two transducers, a multiplier and an I-regulator of thickness. strip, and the last input is connected to the output of the multiplier,: the inputs of which through the transducers are connected to the outputs of the measuring tollsin and SPEED of the strip.
    Fig. 1 shows a rolling mill according to the invention i in Fig. 2 is a block diagram of a device for controlling 30 by a rolling mill, Fig. 3 is a block diagram of a nominal pressure task distribution unit; 4 is a block diagram of a pressure regulating circuit for working fluid in hydraulic support elements; Fig. 5 is a block diagram of a control loop for the ends of the lower support roll. Fig. B - block diagram of the regulation loop of the size of the working roll solution or rolling effort. Fig. 7 is a block diagram of a strip thickness control loop. Figure 1 shows a rolling quarto mill 1, in which the yoke 2 of the sheath 2, 3 of the lower support roll of the deflection through its bearings 4 are directly attached. Pillows 5 for the crosshead of the shell 7 of the upper support roll of the deflection are installed in the stand with height adjustment by (ipindelby 8. On the yoke 2 is supported through the hydraulic support elements 9, the sheath 3 of the lower support, roll 10, and on the upper yoke b the sheath 7 of the upper support roll 11 is supported through the hydraulic 55 support elements 12. In the schematic illustration Fig. 1 shows only 5 upper 12 or lower 9 hydraulic support elements, in fact, their number is much larger and is 60, for example, 24 for each sheath (support roller 10 or 11. In relation to the operating pressures, respectively, a certain number arranged rows of hydraulic support elements 9 and 12 are connected in parallel so that there are five zones along the width of the rolling gap that react to their own actuating signals.
    In the quarto rolling mill between shells 7 and 3, respectively, the upper 11 and lower 10 adjusting spacers) deflection rolls placed two driven work rolls 13 and 14 with their cushions 15. On both sides of the work rolls 13 and 14, so-called balancing cylinders 16 are provided ( hydrodistributor), i.e. hydraulic cylinders, which, under pressure, remove the two work rolls from each other and thereby open the working gap. Rolled material 17 is shown in the rolling gap. It should be noted that the balancing cylinders 16 are under pressure during the rolling process and thus counteract the hydraulic support elements 9 and 12. In doing so, they create excessive moments due to the effect on the ends of the work rolls. This should be taken into account when establishing characteristics for individual hydraulic support elements of 9 and 12 or groups of hydraulic support elements.
    According to figure 2, the rolling stand 1 is conventionally represented by the shells of the lower 10 and upper 11 support rolls, working rolls 13 and 14, hydraulic support elements 9 and 12 and the rolling material 17.
    A device for controlling a rolling mill contains pressure correction sensors 18 by the number of hydraulic support elements 9 or 12, nominal pressure distribution units 19, working fluid pressure control loops 20 in each of hydraulic support elements 9 and 12, contours 21 adjusting the position of the ends of the shells 3 and 7, respectively, the lower 10 and upper 11 support rolls, the contours 22 for adjusting the solution size of the work rolls 13 and 14, or the rolling force and the contour 23 for adjusting the thickness of the strip 17, with the output of the contour 2 3 strip thickness adjustments are connected to the inputs of the control circuits 22 of the solution size of the work rolls 13 and 14 or the rolling force, the outputs of which are connected to the inputs of the nominal pressure task distribution block 19, the other inputs of which are connected to the inputs of the lower 10 and upper 11 shells ends back-up rolls and pressure correction sensors 18, the outputs of the nominal pressure task distribution blocks 19 are connected to the inputs of the working pressure control circuits 20 in each of the wells Equal supporting elements 9 and 12. The nominal pressure task distribution unit 19 (FIG. 3) contains functional converters 24 in an amount equal to the number of hydraulic supporting elements 9 and 12, adders 25 and 26 by the number of hydraulic supporting elements, the sum of tori 27 and 28 switches 29 and 30, tires 31 and 32 for the lower and upper support rolls 10 and 11, respectively, to which the inputs of functional transducers 2.4 are connected, the output of each of which is connected to one of the inputs of the corresponding sum. Mat 25 and 26, the other input of which is connected to the output of the pressure correction sensor 18, the output of the adder 25 or 26 is the output of the nominal pressure task distribution block 19. The LENI, the lower roller bus 32 is connected to the outputs of the adders 27 and 28, the inputs of the cello EL connected to the outputs of the contour 21 of adjusting the position of the ends of the sheath 3 of the lower support roll 10 and the contour 22 of adjusting the working roll solution, the tire 31 of the upper roll using switches 29 and 30 can be connected either to the output of the contours 21 of adjusting the ends of the sheath 7 to the upper support roll 11, or to the output of the contour 22 for adjusting the inter-roll gap of the working rolls 13 and 14 The working pressure regulating circuit 20 (FIG. 4) contains a PID controller 33, an amplifier 34, an actuator 35, a pressure gauge 36, converter 37, a comparison element 38, the inputs of which are connected to the outputs of the nominal pressure task distribution block 19 and the converter 37, the input of which is connected to the output of the pressure gauge 36, the output PID-j of the regulator 33 through the amplifier 34 and the entrance is from output of the reference element 38. The power part of the pressure control circuit 20 for the working fluid in the hydraulic support elements is provided with a discharge valve 39, a safety valve 40, a pressure sensor 41 for protection and a working fluid flow sensor 42. The contour 21 for adjusting the position of the ends of the sheath 3 of the lower support roll 10 (FIG. 5) contains sensors 43 and 44 of the position, setpoint adjuster 45 of the ends of the sheath 3 of the lower support roll 10, converters 46 and 47, PD controller 48, reference element 49, pi -control 50 position of the end of the sheath 3 of the lower support roll 10 and the comparator 51, and the sensors 43 and 44 of the position of the ends of the sheath 3 of the lower support roll 10 through serially connected converters 46 and 47 and PD controller 48 is connected to one of the inputs of the element 49- Comparison whose other input is connected n with the output of the setpoint adjuster 45, the output of the comparison element 49 is connected to the input of the PI controller 50, the end of the sheath 3 of the support roll 10, the outputs of the converters 46 and 47 are connected to the inputs of the paratator 51. The output of the PI regulator 50 of the shell end position 3, the support roll 10 is an output of the contour 21 of adjusting the position of the ends of the support roll sheath. The control loop for adjusting the working rolls or rolling force (Fig. 6) contains an adder 52, comparison elements 53-56, U-regulators 57-60, transport lag units 61 and 62, a roll gap setting unit 63, limiting blocks 64 and 65, respectively. minimum and maximum values of rolling force, sensor 66 and rolling force setting device 67, maximum and minimum rolling force setting devices 68 and 69, converters 70-73, functional converter 74, I-controller 75 p.9lo enclosing the work rolls, the last input with A dinene is provided with an output of a maximum rolling force limiting unit 64, one of the inputs of which is connected to an output of a comparison element 56 via a P controller 57, one of whose inputs is connected to a minimum force setting device 69 and the other to an output of a transport lag block 60 which through converter 71 is connected to the output of rolling force sensor 66, the second input of block 64 for limiting minimum force is connected to output of block 65 for limiting maximum rolling force, one of the inputs of which is connected via P-regulator 59 to The output of the comparison element 54, whose inputs are connected to the outputs of the transport lag unit 61 and the maximum rolling force locking unit 68, another input of the maximum rolling force limiting unit 65, is connected via a switch 76 and P-1 controller 60 to the output of the comparison element 53, one of the inputs of which, through the transport lag unit 62, the functional converter 74 and the converter 72 are connected to the output of the roll gap sensor 43, the other input of the comparison element 53 is connected to the output of the adder 52, the inputs of which are connected to the output of the strip thickness control circuit 23 and through the converter 73 to the roll gap 63, the output of the setting device 67 through the converter 70 is connected to one of the inputs of the comparison element 55, the other input of which is connected to the output of the Trans | element 55, comparison through, P controller, Se, and switch; 1 clamp 76 is connected to the inlet of block B to limit the maximum rolling force. The block diagram of the strip thickness control circuit 23 (Fig. 7) contains thickness gauges 77 and strip speeds 78 (not shown), converters 79 and 80, a multiplier 81 and a thickness controller 82, the input last connected to the output of a multiplier 81 whose inputs are connected with the outputs of the speed gauge 78 and measuring the bodies of 77 thickness, respectively, through converters 79 and 80, the device operates as follows. A predetermined pressure value for the working fluid pressure control circuits 20 in each of the hydraulic support elements 9 and 12 (figure 4) is formed in the nominal pressure pressure distribution units 19, (phyp. 2 and 3), by the output signals of the shells 3 end position adjustment circuits and 7, respectively, of the lower 10 and upper 11 support rolls (FIG. 5) and the control loops 22 of the size of the solution of the work rolls or rolling force (FIG. 2 AND 10). The actual position of the shells 3 and 7, respectively, of the lower 10 and upper 11 support rolls, is measured at both ends of the shells. If the actual position values are the same, then the shells of the support rolls are arranged horizontally and the deviation of the working roll solution or the rolling force affects all the pressure control circuits 20 in each of the hydraulic support elements 9 and 12 to the same extent. In case of shells 3 and 7 supporting rolls 10 and 11 from the horizontal position, the deviation of the working roll solution or rolling force causes a correction of the working fluid pressure in one part of the hydraulic elements s the same sign, and the other - the other sign. The positions of shells 3 and 7 of the lower 10 and upper 11 back-up rolls are set when adjusting the mill. In the course of operation of the mill with the adjustment of rolling force or roll gap, the output signals of the contour 21 of adjusting the position of the ends of the sheath 3 of the lower back-up roll 10 are used. Ri is triggered .blokov limited. the minimum 64 and maximum 65 rolling forces, the thickness control circuit 23 is turned off by the switch 83 (Fig. 7). The proposed solution provides improved accuracy of the geometric dimensions of the rolled sheet.
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    权利要求:
    Claims (6)
    [1]
    1. DEVICE FOR CONTROLLING A ROLLING MACHINE, which is a rolling stand with hydraulic dispersion of the work rolls, the support rolls of which are made in the form of hollow cylinders pressed against the work rolls using hydraulic support elements, the latter being placed along two traverses, the lower of which is mounted on fixed pillows and the upper one on pillows moved by means of a pressure device, which is characterized by the fact that, in order to increase the accuracy of the geometric dimensions of the rolled product, it contains pressure correction sensors the number of hydraulic support elements, the distribution unit of the nominal pressure assignments, the control circuits of the working fluid pressure in each of the hydraulic support elements, the positions of the ends of the backup rolls, the solution size of the work rolls or the rolling force and thickness of the strip, the output of the strip thickness control loop being connected / with the input of the control circuits of the magnitude of the solution of the work rolls or the rolling force, the outputs of which are connected to the inputs of the distribution unit of the nominal pressure tasks, other inputs which are connected to the outputs of the circuit, the regulation of the position of the ends of the backup rolls and pressure correction sensors, the outputs of the distribution unit of the nominal pressure references are connected to. the inputs of the circuits for regulating the pressure of the working fluid in each of the hydraulic support elements.
    [2]
    2. The device according to claim 1, characterized in that the nominal pressure setting distribution unit contains functional converters in an amount equal to the number of hydraulic elements, adders, two switches, tires for the upper and lower backup rolls to which the inputs of the functional transducers, the output of each of which is connected to one of the inputs g of the corresponding adder, the other “(whose input is connected to the output · of the corresponding pressure correction sensor, and the output of the adder is the output of the unit distribution of tasks of nominal pressure, the lower roll bus is connected to the outputs of two adders, the inputs of which are connected to the outputs of the regulation loop of the position of the ends of the lower support roll and the control loop of the magnitude of the solution of the work rolls, the upper roll bus is connected by switches to the output of the control loop of the position of the ends of the upper support roll and to the output of the control loop of the magnitude of the solution of the work rolls.
    [3]
    3. The device according to claims 1 and 2, characterized in that the circuit I controls the pressure of the working fluid | the bones in each of the hydraulic support elements contains a PID controller, an amplifier, an actuator, a pressure gauge, a transducer and a comparison element, the inputs of which are connected to the outputs of the nominal pressure assignment distribution unit and a converter whose input is connected to the output of the pressure gauge, · the PID1080732 output of the controller through the amplifier connected to the input of the actuator, and the input to the output of the comparison element.
    •
    [4]
    4. · The device according to claims 1 to 3, characterized in that the loop for regulating the position of one end of the backup roll contains a sensor and a positioner for the position of the end of the backup roll, a converter, a PD controller, a comparison element and a PI controller for the position of the end of the backup roll, the sensor the position of the end of the backup roll through a series-connected Converter and the PD controller is connected to one of the inputs of the comparison element, the other input of which is connected to the output of the positioner, the output of the comparison element is connected to the input of the PI controller; position of the end of the backup roll.
    [5]
    5. The device according to squares 1-4, characterized in that> the control loop for controlling the size of the work roll solution contains an adder, a switch, four comparison elements, four P-regulators, two transport delay units, a sensor and a roll gap adjuster, and minimum and maximum restriction blocks values of rolling force, a sensor and a setter of rolling forces, a set of maximum and minimum values of a rolling force, four transducers to sensors and setters, a functional converter and an I-controller ora of work rolls, the input of the latter being connected to the output of the unit for limiting the minimum value of the rolling force, one of the inputs of which through the first P-controller is connected to the output of the first comparison element, one of the inputs of which is connected to the setpoint of the minimum value of the rolling force, and the other to the output the first block of transport lag, the input of which through the converter is connected to the output of the rolling force sensor, the second input of the block for restricting the minimum value of the rolling force is connected to the output of the block reduction of the maximum value of the rolling force, one of the inputs of which through the second P-controller is connected to the output of the second comparison element, the inputs of which are connected to the outputs of the first transport delay unit and the maximum value of the rolling force setter, the other input of the maximum value of the rolling force limiting unit is connected via a switch and a third P-controller with the output of the third comparison element, one of the inputs of which through the second block of transport delay functional pre the generator and the converter are connected to the output of the roll gap sensor, the other input of the third comparison element is connected to the output of the adder, the inputs of which are connected to the output of the strip thickness control loop and through the converter with the roll gap adjuster, the output of the rolling force adjuster through the converter is connected to one of the inputs of the fourth element comparison, the other input of which is connected to the output of the first block of transport delay, the output of the fourth block through the fourth P-controller and switch The device is connected to the input of the limiting unit for the maximum value of the rolling force.
    [6]
    6. The device according to claims 1-5, characterized in that the strip thickness control loop comprises strip thickness and speed meters, two transducers, a multiplier and an I-strip thickness regulator, the input of the latter being connected to the output of the multiplier, the inputs of which through converters connected to the outputs of the gauges of thickness and speed of the strip.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1080732A3|1984-03-15|Device for controlling rolling mill
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    GB1346878A|1974-02-13|Rollmill control system
    US3798940A|1974-03-26|Rolling mill control system
    KR970001548B1|1997-02-11|Method for cold-rolling sheets and strips
    JPH03165910A|1991-07-17|Shape control of cluster mill
    SU1414313A3|1988-07-30|Device for controlling the width of rolled stock in small-section mill
    SU1031546A1|1983-07-30|Apparatus for automatic control of strip shape in rolling mill
    同族专利:
    公开号 | 公开日
    NL188149B|1991-11-18|
    ES509588A0|1983-01-16|
    FI70159C|1986-09-15|
    IT1149791B|1986-12-10|
    DE3109536C3|1994-04-14|
    SE8201433L|1982-09-14|
    FR2501542B1|1985-03-15|
    JPS57160511A|1982-10-02|
    DE3109536C2|1994-04-14|
    FR2501542A1|1982-09-17|
    NL8201035A|1982-10-01|
    IT8220007D0|1982-03-08|
    AT390900B|1990-07-10|
    JPH024363B2|1990-01-29|
    CA1174336A|1984-09-11|
    NL188149C|1992-04-16|
    FI820764L|1982-09-14|
    US4481799A|1984-11-13|
    SE447967B|1987-01-12|
    GB2094688A|1982-09-22|
    ATA44682A|1990-01-15|
    FI70159B|1986-02-28|
    DE3109536A1|1982-09-23|
    GB2094688B|1985-02-27|
    ES8301686A1|1983-01-16|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3109536A|DE3109536C2|1981-03-13|1981-03-13|
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