SU1054651A1 - Device for controlling charging and moving blanks in heating furnace - Google Patents

Abstract

CONTROL DEVICE FOR LOADING AND Nia transferring the blanks in a heating furnace, soderzheschee load drive mechanism drvvod shagakshih bashzh, the control unit, the first and second outputs are connected to the drive mechanism and load the first input drive stepping bapok respectively zaaatchnk zadat- width and "wk Interval between slabs connected to the nepjsbTM and the second inputs of the yi aeneOTfi block, respectively, of the mixing of the walking beams, the output of which is connected to the fifth input of the control unit, the sensor of the presence of the slab In the furnace unloading unit, connected to the third input of the control unit and the second drive input of the chimney beams, and the displacement sensor of the loading mechanism, connected to the fourth input of the control unit, characterized in that it is equipped with a determination unit to increase the throughput of the furnace the free space on the boot side of the furnace bottom, the block for transmitting information about the width and spacing of the slabs synchronously Ich) with the advancement of the slab in the furnace and the beam spacing unit, the first and second inputs of the block The free space is connected to the w of the width setting devices and the shaft between the slabs /, respectively, its third and fourth inputs are connected to the movement sensors of the pin mechanism (L and drive the walking beams, respectively, and the output is connected to the sixth input of the control unit and the third walking actuator input beams, the first and vfto and the inputs of the transmission unit; the width of the 6 is not slab and the interval between the slabs is connected by Ea 1 inputs of the width and the interval between slabs, respectively, the output of which is connected to the seventh The first input of the control unit and the first input O5 of the beam spacing sensor, the second input of the control unit is connected to the control sensor, and the output is connected to the eighth input of the control unit.

Description

The invention relates to.  The control mechanisms for displacing {blanks in the NW RVAT furnaces and can be used, in particular, the CPU for automatic locking control of the loading and movement of billets in modern heating furnaces with walking pads, A device is known that contains boilers of the loading mechanism and the bursts the control of the connected front output to the boot mechanism, and the second to the drive of the walking bogs, the knob of the folding bends, the sensor of the presence of spins and the sensor of the position of the loading mechanism, –– are connected to the first one, w rum and third WMOs give control unit, determining unit step groups layout cn CWA connected to its output to a fourth input of the control unit, and an input - setting elements to the pitch layout cn CWA.  The closest to the invention to the technical essence and the achieved effect is a device comprising drives of the loading mechanism and step beams, a control unit, the first and second outputs of which are connected to the drive of the loading mechanism and the first input of the walking beams drive, respectively; the inter-slave interval adjuster, connected to the first li by the second inputs of the control unit, respectively, the moving beams movement sensor, the output of which is connected to the sixth control input, the presence sensor ba mounted on the kiln of the kiln unloading zone, connected to the input of the movement sensor of the bats and the second input of the walking beams drive, count of ja ;; oB beams, the output of which is connected to the fifth input of the control unit, the end sensor of the full beams, the output of which is connected with the input of the displacement counter of the loading mechanism connected to the four-sided entrance of the control unit 2j "A common disadvantage of the known devices is that the presence of a fixed constant step size of the beam steps and the presence of a limitation of the mechanism from loading (and constructively conformed.  zheny) at the level of maximum aonycTH "i My values do not allow to perform the layout of slaves; minimal technological gaps when moving from one . the size of the width of the slab to the other.  This leads to the underutilization of the worker, the space of the furnace bottom (or fixed furnace beams), reducing its throughput.  In the case when the discharged workpiece has a size smaller in width; which is to be loaded, the empty space on the bottom is unloaded after unloading and shagging. beams on the value corresponding to this space is not enough to accommodate the next preparation.  It is necessary to skip a single boot operation and perform a follow-up cycle on moving the steps of the beams.  But while limiting the loading mechanism, it is not possible to withstand the minimization of the 1st aaaor between the workpieces.  Another disadvantage of the known device 2 is the necessity to perform an incomplete step of the beams when stopping the next slab in the unloading zone with subsequent unloading, for which the drives of the loading device are blocked. and stepping of the beams, which leads to an increase in the load cycle of the next lap, due to the need to complete the previous non-pop step of the beams, to reduce the load rate and to increase the number of inclusions, leading the walking beams, which increase the power consumption of the furnace in each cycle.  The circuit of the invention is an increase in the furnace throughput.  The goal is achieved by the fact that the device for controlling the loading and moving of the blanks in the heating furnace, containing the drive of the loading mechanism, the drive of the walking bats, the control box, the first and second outputs of which are connected, with the drive of the loading mechanism and the first input of the walking beams, respectively, the width adjuster and inter-spacing unit control unit, connected to the first and second control inputs, respectively, pitch displacement sensor | bins, the output of which is connected to the fifth EQUIPMENT of the control unit, a slab availability sensor installed in the furnace unloading zone, connected to the third input of the control unit on the second drive input of the loading mechanism, and connected to the fourth input of the side converter - Ravpeni is additionally equipped with a side for determining free space on the boot side of the furnace bottom, a block for transmitting information about the width and spacing between spu synchronously with the advancement of the sd ba in the furnace and the spacing pads of the pads, with the first The second and second inputs are available for determining the free space with outputs for width and spacing sensors between the slabs, respectively, its third and fourth inputs are connected to the cat-peaks of the loading mechanism and the walking foot, respectively, and the output is connected to the sixth input of the control unit and the third input the drive of the step of bobbin beams, the first and second inputs of the block for transmitting information about the width of the slab and the interval between the slabs are connected to the input of the width and spacing gauges between the slabs, respectively, output ,; Each is connected to the seventh control input and the first input of the step detector, the second input of which is connected to the slave presence sensor, and the output to the eighth input of the control unit.  Fig, 1 shows a block diagram of the proposed device; in fig.  2 - the same, control unit; in fig.  3 - the same, (the unit for determining the free space on the loading hearth of the furnace; FIG.  4 is the same as the information transfer unit.  The device contains a drive 1 loading mechanism, a drive 2 walking boots, block 3. driving the loading mechanism and walking beams, gauge 4 slab width, unit 5, the interval between each two consecutive slabs, loading mechanism movement 6, load cell moving sensor 7, slab loading sensor 8 in the Furnace unloading zone, block 9 determining free space on the boot side of the furnace bottom, the unit 10 of transmitting information about the width of the slab to be unloaded and the interval between the slabs synchronously with the sale of the tank through the oven, the step gauge 11 (FIG. 1). ).  The input of the drive 1 and the first input of the drive 2 are connected to the first and second outputs of block 3, respectively.  The control unit 3 with its first and second inputs is connected to the setting units 4 and 5, respectively, of the widths of the loaded slab and the interval between the slots loaded into the furnace.  The third, fourth, and fifth inputs of unit 3 are connected to sensors 8, 6, 7, respectively.  The sixth input unit 3 is connected to the output unit 9, the inputs of which are connected to the setting devices 4 and 5 and the sensors 6 and 7.  The seventh input of the unit 3 is connected to the output of the unit 10, the inputs of which are connected to the outputs of the setters 4 to 5.  The eighth input of the block 3 is connected to the output of the block 11, the first and the first inputs of which are connected respectively to the outputs of the block 1O and the sensor 8.  10 14 The second input of the drive 2 is connected to the sensor output 8, and its third input is connected to the output of the block 9.  FIG.  2,3,4 The following notation is used: Cl-key, DS- discriminator, 6W - adder; ST - counter; M - addressable memory; SK - selector.  The device works as follows.  Furnace loading involves two operations: transferring successive rows of slabs in the furnace with the aim of feeding the next slab to be discharged from the furnace to a predetermined position in the discharge zone of the furnace: feeding the next slave by the loading mechanism into the empty space of the furnace bottom in the loading zone .  The control signal for performing the next cycle of the device is the signal appearing at the output of the sensor 8, which detects the appearance of the front end of the slab to be discharged in the unloading zone at the unloading position, advanced by the walking beams.  The named signal interrupts the movement of the drive 2 of the walking beams, and the control unit 3 is instructed to perform the next pick-up operation of the device.  Unloading sla.  At the same time, the amount of free space at the furnace bottom is equal to the sum of the width of the issued slab and the interval between it and the subsequent slab transmitted by block 1O synchronously with the slab through the furnace until it stops at the unloading position.  . This value is tjjji. ,, bjj - width of slab to be unloaded; the value of the interval between the unloaded station 4i following it, and determines the required value of the next stroke of the walking beams for feeding the next sp to the unloading position. The occurrence of the slab to be unloaded at the unloading position according to the gauge 8 of the sensor and this information on the required value of the next walking leg protein is transmitted by block 1O to sensor 11 to calculate the step of the beams and to block 3 as a task for the next beam of beams.  The magnitude of the maximum step of the beams is determined by the design of the mechanism and, as a rule, is chosen according to the condition trun - the minimum size of the slab on the width of the possible width.  When the required stroke is performed with the maximum step for stopping the condition of the stop to be unloaded, the slab at a given position in the discharge zone does not exclude the possibility of incomplete beam spacing incomplete, which boosts the number of drive beams driven during the operation cycle and reduces the temp. loading, blocking, at the time of unloading, the work of the drives of the walking beams and the loading mechanism, In the device, in case of equality of relative-) (c. , sheni, i  The required number of beams steps t) is taken as the next number from the number of natural numbers, and the required step size of the beams when completing the number of beams for the required turn is determined by the stripper 11 as.  The use of beams controlled by the magnitude of the displacement, varying in the range from the minimum to the maximum value, will allow, regardless of the width of the unloaded slab and spacing, always. receive the course of beams are multiples of step, t, e, exclude the possibility of occurrence when performing the next course for a given movement of the slab of the last partial step of the beams, A.  This makes it possible to reduce the number of inclusions of the walking leg drive per cycle: moving the slab in the furnace and combine the operation of unloading the slab with the return stroke of the stepped beams to the starting / position, ea, thereby increasing the furnace loading rate.  The calculated value of the task Sj is transferred to block 3, which controls the next movement of the drive 2 of the walking beams.  The control of the movement of the beams for the given values of the stroke and step of the beams is carried out by block 3 with the aid of the input of the beam displacement sensor 7 coming from the flow of the block to the block.   In this case, ToHfnos1 is practicing movement, and such shock extraction in the movement mechanism is provided by setting unit 11 into block 3 of the preemptive signal at lowering the speed of movement of the beams as the latter approaches the specified distance from the window point of each. step beams, ensuring a smooth approach of the mechanism of beams to a given coordinate of movement.  The operation of loading the next slab into the furnace is accomplished with the HELP introduced: the device of the unit 9 for determining the free space on the furnace bottom on the loading side.  BLOCK 9 based on Inform. The information about the width of the slab to be loaded into the furnace, from the control unit 4, about the required (minimum value v of the gap between the slab to be loaded and the previous loaded slab,.  the output of the setting device 5, and the magnitude of the working stroke of the mechanism 1, the load done when loading the previous slab and measured using the pulse displacement sensor 6, and the stroke of the beams, perfect by the drive 2 when moving the previous slab from the moment it finishes loading to the moment when the free revenge is determined by the block 9 and measured with the help of the sensor 7, it determines the amount of the free space on the boot side of the furnace bottom in accordance with the expression Mix. 4e. . ,) ,, where X is the stroke of the walking blocks when the previous slab moves to the packs; time from the end of loading it to the moment of determining the free space on the loading side; , - value. The working stroke of the loading mechanism when loading the previous slab into the furnace; L is the distance from the axis of the loading roller table to the rear border of the furnace loading zone; B is the width dimension of the previous slab loaded into the furnace; WH -  the required gap size between the loaded and the slave to be loaded.  If there is free space on the boot side of the furnace bottom, defined by block 9s, when equality A b is achieved, where is the width of the spam to be loaded into the furnace, block 9 issues a signal to the actuator -2 at the end of the performed step of the bolster when the specified beam travels the next workpiece to the unloading zone and to prohibit the execution of the next step of the move until the end of the operation of loading the next slab into the furnace.  Due to this, it is possible to place the slabs on the furnace hearth (G minimum technological gaps in the whole range of slab sizes across the width with a high loading rate determined by the duration of the previous slab's movement by the amount sufficient to lay the next slab.  The length of the working stroke of the loading mechanism. (and, accordingly, the overall dimensions of the mechanism) may be limited at the level of bmin l. XZtah The signal from the output of block 8 is also supplied to block 3 to generate a task for the movement of the mechanism 1 for loading into the furnace in accordance with: V- (A4LV where bj is the width of the loaded slab, Signal and aajqaHwe to allow loading operation It is transmitted by block 3 to the drive of the mechanism 1 upon completion of the performed step by the furnace beams, combining the supply of the slab to the furnace with the operation of returning the beams to the initial position, in order to increase the furnace loading rate, since the capacity to move the beams is more than inertial than operats download.  UNIT 9 for determining the free space on the boot side of the furnace bottom has four entrances, to which A5 information about the width of the unloaded slab, the required interval between the loaded and the previous slave, the amount of movement of the loading mechanism, and the value of stir sh furnace beams.  At the output of the bpock, a signal is generated that there is a free space on the boot side of the furnace bottom, the amp signal contains information and control components.  The information component of the signal contains the value A calculated by block 9 (the expression dp of the definition is given in the description) of the free state on the loading side of the furnace.  1 518 The control component of the output signal, formed by block 9 in mono.  The moment of achieving equality A of the free space on the loading side of the furnace of size bj of the width to be loaded into the loading furnace carries a logical command to drive 2 re-evaluate the beams, allowing the beam to complete the step when working out a given course of moving the next workpiece to the unloading area and prohibiting beams performing the next step up to those nop, w, until the operation to load the next slab into the furnace is performed.  Thus, the control signal provides an interruption (in necessary cases) of the process of moving the next slab to the unloading position for the time necessary to complete the loading of the new slab into the furnace from the condition of placing the slab on the bottom with minimum gaps.  The information component of the output signal of block 9 transmits information about the amount of free space on the load side of control block 3 to determine the final value of the task for the kiln loading mechanism, and the control unit 1a carries the command to allow the block 3 to generate a load operation .  The structure of block 9 (FIG.  3) assumes the presence in it of elements that ensure the implementation of computational and logical operations for the generation of output signals with the listed properties, according to information received at its inputs.  .  The set of functions performed by block 9, which are listed as well as given in the description of the proposed device, determines the structure of the block, which may be different depending on the base used for the implementation of the elements: analog or discrete technology.  -contact elements of the IPI elements (relay logic.  At the end of the block loading operation, 3 is issued a command for routing when the drive 2 terminates the interrupted course of the beams (or you complete the next move, combining the movement of the beams of the next billet to the unloading area with returning the loading mechanism to its original position.  BLOCK 3 (FIG.  2) control of the drives of the loading mechanism and walking boots has eight entrances, to which information about the width of the loaded spa, information about the required interval between the loaded and previous operation, about the front of the front of the unloaded spa at the unloading position, about the amount of movement of the loading mechanism, the amount of movement of the furnace beams, the amount of free space on the loading furnace, the width of the unloaded slab and the size, slab and the interval between the unloaded and the next slabami, about the size of the required step beams.  At the output of the block, control signals are generated from the drives of the loading mechanism and the walking beams.  Unit 3 has a complex structure, ensuring the following functions are calculated: calculating the task for the ichiSy of the required course of the loading mechanism into the furnace based on the signals and width of the loaded slab, about the required interval between the loaded and previous slabs and the amount of free space on the furnace loading side: command generation on the required stroke of the mechanism of loading into the furnace according to the signals about the presence of free space jig to the loading side of the furnace to load the next slab of a given width and end of the discharged shaft ha 6anoKj control over working out the movement of the loading mechanism into the furnace and fusing the rodent to return the loading mechanism to its original position and monitoring the working out of this movement with the signal of the sensor moving the loading mechanism; formation of the team for the course of the beams on the movement of the unloaded workpiece to the unloading position P (with a signal about the required stroke size.  6anok (output signal of block 10) and the estimated value of the required beam spacing (according to the output signal of the block ll) f control aa by moving the block with the calculated step and forming a return command starting position after the step and controlling this movement using sensor signals movement of the beams and the workpiece sensor in the discharge area.  The implementation of block 3 structure may be different depending on the element base used for construction: analog or discrete devices. technology, contactless or relay logic.  The proposed solution contains a block for determining the free space at the charging end of the furnace, a unit for the step length of the beams and a number of nodes that allow automation of the furnace loading process (since it’s not a loading method with variable beams, but a specific load control device) that Comparing with the base object, it allows stacking and transporting the joint venture & I in the furnace with the specified minimum technological gaps, without doing a full step of the beams.  The unit with information on the width of the slabs and the interval between the slabs synchronously with the advancement of the slab in the furnace, which is composed of the device, allows automation of the process of loading and unloading the furnace.  The expected effect as a result of the use of the invention in comparison with the base object is determined: by reducing the gaps between the slots i, which, with the same furnace performance, reduces the consumption of fuel (gas) or 1FV the same t-fuel consumption increases.  furnace productivity {by decreasing the number of inclusions of the beam spacing mechanism, due to which the power consumption and the cycle time are reduced when the next one moves to the load position.

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FIG. g

Claims (1)

CONTROL DEVICE FOR LOADING AND Nia transferring the blanks in a heating furnace, comprising a loading mechanism drive actuator walking beams, the control unit, the first and second outputs are connected to drive the loading mechanism and the first input of the actuator of walking beams, respectively, the second width dial ^zadat-: snip the interval between the slabs, connected to the first and second gatherings of the control unit, respectively, the sensor for moving the steps of beams, the output of which is connected to the fifth input of the control unit, the sensor for the presence of the slab connected in the unloading furnace, connected to the third input of the control unit and the second input of the drive walking beams, and the displacement sensor of the loading mechanism, is connected. connected to the fourth input of the control unit, characterized in that, in order to increase the throughput of the furnace, it is equipped with a unit for determining the free space on the loading side of the hearth of the furnace, a unit for transmitting information about the width and interval of the end of the slabs synchronously t e with the promotion of the slab in the furnace and a beam step adjuster, wherein the first and second inputs of the free space determination unit are connected to the outputs of the width and spacing adjusters of the slabs /, respectively, its third and fourth inputs are connected to sensors moving the loading mechanism and the drive of walking beams, respectively, and the output is connected to the sixth input of the control unit and the third input of the drive of walking beams, the first and second inputs of the transmission / information unit ό the width of the slab and the interval between the slabs are connected to the output odes of the adjusters of the width and the interval between the slabs, respectively, the output of which is connected to the seventh input of the control unit and the first input of the beam pitch adjuster, the second input of which is connected to the slab presence sensor, and the output to the eighth input of the control unit. SU _t , 1054651