JP2012066888A - Raw material stowage apparatus - Google Patents

Abstract

An object of the present invention is to make the pile amount in the longitudinal direction uniform.
[Solution]
“PVave / SP” is obtained by measuring the weight of the raw material cut out from the storage tank 1 by the line meric 11, calculating the transport actual amount PVave per unit time ta based on the measurement signal, and dividing this by the target transport amount SP. "Is a correction amount, and the conveyance actual amount average value PVave is stored in association with the calculated measurement period. When the required time from when the raw material passes the measurement position by the line merrick 11 until the material is actually discharged from the boom belt conveyor 8 is defined as the required transfer time, the measurement time corresponding to the time point before the required transfer time from the present time is obtained. The associated correction amount is acquired, and this correction amount is multiplied by the reference traveling speed V ₀ of the stacking stacker 7 to obtain the current traveling speed Vtan.
[Selection] Figure 4

Description

  The present invention relates to a raw material stacking apparatus for stacking raw materials to form a pile.

The iron ore temporarily placed in the coarse ore yard is cut out from the coarse ore yard by a loader according to the pile loading plan, crushed and classified in the middle of conveyance, divided into agglomerate and fine ore and put into a surge hopper. After being temporarily stored, it is quantitatively cut out by a quantitative cutout device, conveyed to a bedding yard, and stacked in layers by a stacking stacker.
The pile formed by stacking is called a pile. When the stacking of the pile is completed, the pile is cut out from one end face in the longitudinal direction of the pile by a reclaimer in accordance with the operation of the lower process.

To make one pile, dozens of brands are stacked in layers of 200-300 layers in the longitudinal direction of the pile. Cause fluctuations.
For this reason, as a method of suppressing the fluctuation of this component, for example, the current component calculation is performed in units of length in the longitudinal direction of the pile, and the final component distribution in the longitudinal direction of the pile is uniform. There has been proposed a method of calculating a conveyance amount per unit time of brands to be stacked and performing quantitative cutout with a quantitative cutout device (for example, see Patent Document 1).

Japanese Examined Patent Publication No. 7-100543

However, in the quantitative cutout device, due to abnormal changes in the cutout amount due to material sticking in the storage tank and delays in the control system corresponding to changes in the bulk specific gravity of the raw material, the scheduled transfer amount per unit time and per unit time There may be a difference between the actual conveyance amount and the fluctuation of the component in the longitudinal direction of the pile due to the abnormal change in the cutout amount or the delay of the control system corresponding to the change in the bulk specific gravity of the raw material. There is a problem of end.
Therefore, the present invention has been made paying attention to the above-mentioned conventional unsolved problems, and an object thereof is to provide a raw material stacking apparatus capable of making the pile stacking amount uniform.

  In order to achieve the above object, the raw material stacking apparatus according to claim 1 of the present invention includes: a cutting unit that cuts out the raw material so that a conveyance amount per unit time of the raw material becomes a target conveyance amount; A stacking stacker that discharges the raw material cut out by the cutting means, and a traveling control unit that causes the stacked stacker to travel at a target traveling speed and stacks the raw material discharged from the stacking stacker to form a pile. Based on the actual conveyance amount detecting means for detecting the actual conveyance amount per unit time cut out by the cutout means, the actual conveyance amount detected by the actual conveyance amount detection means, and the target conveyance amount. And a target travel speed correction unit that corrects the travel speed.

The raw material stacking apparatus according to claim 2 is a time required for the raw material to reach a position where the raw material passes the measurement position of the transport amount by the transport actual amount detection means and reaches a position where the raw material is discharged from the stacking stacker. The required travel time calculating means for calculating the required travel time correction means, based on the actual transport amount and the target transport amount at the time before the required time calculated by the required transport time calculation means, The target travel speed is corrected.
Furthermore, in the raw material stacking apparatus according to claim 3, the cutting means is formed so that a plurality of different types of raw materials can be cut out, and forms a pile of mixed raw materials composed of a plurality of different types of raw materials as the pile. It is characterized by that.

  According to the raw material stacking apparatus of the present invention, since the traveling speed of the stacking stacker is controlled based on the actual conveyance amount and the target conveyance amount, the actual conveyance amount and the target conveyance amount do not match and the pile is stacked on the pile. When it is predicted that the amount of discharged raw material will fluctuate, it is possible to make the amount of discharged raw material at each point constant by increasing or decreasing the traveling speed of the stacking stacker so that the amount of discharged material is constant. As a result, the raw materials can be uniformly stacked.

It is a block diagram which shows an example of the raw material stacking apparatus to which this invention is applied. It is explanatory drawing with which it uses for operation | movement description of this invention. It is a flowchart which shows an example of the process sequence of a general control process. It is a flowchart which shows an example of the process sequence of correction amount calculation processing.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing an example of a raw material stacking apparatus to which the present invention is applied.
In FIG. 1, 1 is a storage tank. In the storage tank 1, for example, a certain brand of raw material that is cut out from a crude ore yard (not shown) and subjected to crushing, sieving classification and the like in the middle of conveyance is stored. A fixed quantity cut-out belt conveyor 3 is provided at the bottom of the storage tank 1, and the fixed quantity cut-out belt conveyor 3 is cut out by a cut-out mechanism such as a rotary valve or a valve (not shown) provided at the bottom of the storage tank 1. The predetermined amount of raw material is conveyed to the conveyor belt conveyor 5.

  Thereby, the raw material cut out from the storage tank 1 is transferred to the fixed cut-out belt conveyor 3 and the transfer belt conveyor 5 and loaded into the bedding yard from the head of the boom belt conveyor 8 of the stacking stacker 7 to form a pile 10. . A line meric 11 for measuring the weight of the raw material passing through a fixed position of the conveyor belt conveyor 5 every moment is provided at an appropriate position of the conveyor belt conveyor 5.

  Rails (not shown) are laid on the sides of the bed yard where the piles 10 are stacked, and the stacking stacker 7 is configured to stack the piles 10 while running on the rails. Is moved at a predetermined speed so that the material is dispensed while the tip position of the boom belt conveyor 8 moves back and forth in the pile area of the pile 10, so that the material is piled up along the longitudinal direction of the rail. A pile 10 that is long in the longitudinal direction is formed.

The quantitative cutout belt conveyor 3 is controlled by a quantitative cutout control device 13. The stacking stacker 7, the boom belt conveyor 8 and the transport belt conveyor 5 are controlled by a stacking stacker control device 15. The quantitative cutout control device 13 and the stacker control device 15 are controlled by the overall control device 17.
The quantitative cut-out control device 13 inputs a target conveyance amount from the overall control device 17 and a measurement signal composed of a weight signal from the line meric 11, and per unit time Δt set in advance from the measurement signal of the line meric 11. The transport amount (weight) [T / H] of the raw material is calculated as the transport actual amount.

Then, the cutting amount by the above-described cutting mechanism (not shown) and the quantitative cutting belt conveyor 3 is controlled so that the actual conveyance amount matches the target conveyance amount specified by the overall control device 17.
The stacker control device 15 receives the command values of the transport speeds of the transport belt conveyor 5 and the boom belt conveyor 8 from the general control device 17, and the transport speeds of the transport belt conveyor 5 and the boom belt conveyor 8 are respectively designated. These are driven and controlled so as to achieve a high transport speed. Further, the stacking stacker 7 is driven and controlled in accordance with a command from the general control device 17. Specifically, the stacking stacker 7 is driven and controlled on a rail (not shown), and the tip position of the boom belt conveyor 8 corresponds to the stacking region of the pile 10 (sections X1 to X2 in FIG. 1). The moving direction of the stacking stacker 7 is switched so as to reciprocate. Further, the stacking stacker control device 15 receives the target travel speed from the overall control device 17 and controls the stacking stacker 7 so that the travel speed of the stacking stacker 7 becomes the target travel speed.

  The overall control device 17 inputs the current position information of the stacking stacker 7, the moving direction of the stacking stacker 7, the position information of the tip of the boom belt conveyor 8, etc. from the stacking stacker control device 15. The stacking stacker 7 is moving, the tip of the boom belt conveyor 8 is located near the end of the payout section (sections X1 to X2), or is located near the end of the payout section (sections X1 to X2) The working status of the stacking stacker 7 is determined such as in which direction it is moving, whether the stacking stacker 7 is about to stop, or is about to start moving.

  Then, a predetermined driving section (x1 ′ to x2 ′ in FIG. 1) set in advance in the payout section (sections X1 to X2) is set as a section in which the stacking stacker 7 travels at a constant speed to perform a predetermined amount of payout. When the tip position of the boom belt conveyor 8 is within the fixed drive section (x1 ′ to x2 ′ in FIG. 1), the cutout amount by the fixed cutout belt conveyor 3, the transfer of the transfer belt conveyor 5 and the boom belt conveyor 8 are set. The speed control target value is set to a predetermined constant value, and the quantity is determined so that the cut-out amount by the quantitative cut-out belt conveyor 3 and the transport speeds of the transport belt conveyor 5 and the boom belt conveyor 8 become the set control target values. Control is performed via a cutout control device 13 and a stacking stacker control device 15. At this time, a preset reference travel speed is set as a control target value of the travel speed of the stacking stacker 7, and the target travel speed is calculated by correcting the reference travel speed based on a correction amount described later. The stacker 7 is driven and controlled so that the travel speed of the stacker 7 becomes the target travel speed.

  In addition, the predetermined amount set as a control target value of the cut-out amount by the quantitative cut-out belt conveyor 3, the transfer speed of the transfer belt conveyor 5 and the boom belt conveyor 8, and the reference traveling speed of the stacking stacker 7 are, for example, When the pile 10 is formed by stacking the raw materials cut out from the storage tank 1, the value is set so that the pile 10 can be formed satisfactorily.

  On the other hand, when the tip position of the boom belt conveyor 8 is outside the fixed drive section (sections x1 'to x2'), that is, when it is located near the end of the stacking area, the moving direction of the stacking stacker 7 Based on the current position information and the like, it is determined whether the stacking stacker 7 is to be stopped or started to move. Based on this, the traveling speed of the stacking stacker 7, the transport speed of the boom belt conveyor 8, the quantitative cutout control The control target value of each part, such as the target transport amount of the apparatus 13, the transport speed of the transport belt conveyor 5, and the traveling speed of the stacking stacker 7, is calculated and notified to the quantitative cutout control apparatus 13 and the stacking stacker control apparatus 15. . For the stacker 7, the control target value of the travel speed is notified to the stacker control device 15 as the target travel speed.

For example, when the tip position of the boom belt conveyor 8 approaches the end of the payout section (sections X1 to X2), the stacking stacker 7 is gradually decelerated and the target conveyance amount of the quantitative cutout control device 13 is gradually decreased. For example, various control target values are calculated in accordance with the work status of the stacking stacker 7.
The general control device 17 is a quantitative cut-out control device 13 based on the weight signal from the line merrick 11 when the tip position of the boom belt conveyor 8 is in the constant drive section (sections x1 ′ to x2 ′). Based on the calculated actual transport amount per unit time Δt and the target transport amount at that time, the travel speed correction amount of the stacking stacker 7 is calculated.

  The travel speed correction amount is calculated according to the following procedure. That is, first, the actual conveyance amount per unit time Δt is input from the quantitative cutout control device 13. Based on this, the average value (hereinafter referred to as the actual conveyance amount average value) PVave of the actual conveyance amount within the unit time ta for speed control is calculated. The unit time ta for speed control is set to a time longer than the unit time Δt.

Then, “PVave / SP” obtained by dividing the calculated transport actual amount average value PVave by the target transport amount SP per unit time at this time is set as a correction amount. The correction amount is a correction amount in the measurement period tan when a period in which a plurality of transfer result amounts used for the calculation of the transport result amount average value PVave is measured is a measurement period tan. It is set for each measurement period tan. The overall control device 17 stores the correction amount calculated for each unit time ta in association with the measurement period tan.
The unit time ta can be set arbitrarily. For example, the correction amount is set for each unit time ta, and the correction is performed more finely as the unit time ta is shorter as will be described later. What is necessary is just to set time ta.

Then, when the tip position of the boom belt conveyor 8 is within the constant drive section (sections x1 ′ to x2 ′), the general control device 17 performs the correction amount “PVave / SP” according to the following equation (1). the reference running speed V ₀ is corrected based on, it calculates a target running speed Vtan stowing stacker 7.
Vtan = V ₀ × PVave / SP (1)
Specifically, the time until the raw material that has passed through the measurement position by the line meric 11 is actually dispensed from the boom belt conveyor 8 is calculated as the required transfer time (required transfer time calculating means) and stored in a predetermined storage area. The correction amount corresponding to the measurement period tan including the time point that is the required transport time before the present time is specified based on the correction amount that is being performed, and this is set as the current correction amount, and the correction amount is determined based on the specified correction amount. The target travel speed Vtan is calculated according to the equation (1). The target travel speed Vtan is output to the stacking stacker 7 as the current target travel speed.

  That is, as shown in FIG. 2, the transport actual amount average value PVave is calculated every unit time ta, and the correction amount for correcting the traveling speed corresponding to the error from the target transport amount SP is calculated every unit time ta. To do. Then, the control target value of the traveling speed of the stacking stacker 7 is corrected based on the correction amount. At this time, when the actual transport amount average value PVave is larger than the target transport amount SP, the travel speed is corrected in a direction that can be accelerated, so that the amount of raw material stacked at the same point of the pile 10 tends to decrease. Thus, the decrease and the excess transported more than the target transport amount SP are offset, and as a result, the raw material corresponding to the target transport amount SP is loaded on the pile 10. On the other hand, if the actual transport amount average value PVave is smaller than the target transport amount SP, the traveling speed is corrected in the direction of slowing down, so that the raw material stacked at the same point of the pile 10 becomes excessive. The excess and the deficiency less than the target transport amount SP are offset, and as a result, the pile 10 is loaded with the raw material equivalent to the target transport amount SP. In FIG. 2, the horizontal axis represents time [t], and the vertical axis represents the transport amount per unit time [T / H].

The raw material dispensed from the boom belt conveyor 8 at the present time corresponds to the transport actual amount average value PVave calculated at the time point before the required transfer time from the current time, and is calculated at the time point before the required transfer time from the current time. The reference travel speed is corrected based on the correction amount corresponding to the transport actual amount average value PVave.
Next, the operation of the above embodiment will be described with reference to FIGS. FIG. 3 is a flowchart showing an example of a processing procedure of the overall processing of the entire stacking process executed by the overall control device 17, and FIG. 4 is a correction amount calculation process for calculating the correction amount of the traveling speed of the stacking stacker 7. It is a flowchart which shows an example of a process sequence.

  As shown in FIG. 3, the general control device 17 first loads the current position information of the stacking stacker, the moving direction of the stacking stacker 7, the boom, as shown in FIG. The position information of the tip of the belt conveyor 8 is read, and based on this, the work status of the stacking stacker 7 is judged (step S1), and the tip of the boom belt conveyor 8 is preset based on the work status of the stacking stacker 7. It is determined whether or not it is in a fixed drive section (sections x1 'to x2').

  For example, when the end of the boom belt conveyor 8 is positioned in the vicinity of the end of the payout section (sections X1 to X2) on the X1 side, for example, when starting up, the process proceeds from step S2 to step S3. Starting the belt conveyor 8 and the stacking stacker 7 and gradually accelerating them to start discharging the raw material from the stacking stacker 7 at the end position on the X1 side of the discharging section, etc. Each part is driven and controlled via the control device.

  When the tip of the boom belt conveyor 8 reaches a fixed drive section (sections x1 ′ to x2 ′), the overall control device 17 proceeds from step S2 to step S5 in FIG. Search for a period. Specifically, a time point before the current time is specified by the required transfer time from when the raw material passes the measurement position by the line meric 11 until it is actually paid out from the boom belt conveyor 8, and this specified time point is included. Search the measurement period.

  The required transport time is calculated from, for example, the transport speed of the transport belt conveyor 5 and the distance between the end of the transport belt conveyor 5 on the stacking stacker 7 side and the line meric 11. The sum of the conveyance time m1 from the point of time passing through to the position of the stacking stacker 7 and the material conveyance time m2 of the boom belt conveyor 8 calculated from the boom length and the conveyance speed of the boom belt conveyor 8 Calculate from. That is, “m1 + m2” is the required transport time. When the tip of the boom belt conveyor 8 is in a constant drive section, the conveyance speed of the conveyor belt conveyor 5 and the boom belt conveyor 8 and the boom length of the boom belt conveyor 8 are known constant values, so the required conveyance time is constant. Value.

Here, when the calculation such as the measurement period and the correction amount is not performed and the information is not yet stored in the storage area at the time of start-up or the like, the process proceeds to step S7 through step S6 as it is. Assuming that the amount “PVave / SP” is “1”, the target traveling speed Vtan is calculated from the equation (1).
In the fixed drive section, the target value of the traveling speed of the stacking stacker 7 is set to the known reference traveling speed V ₀ , and thus the reference traveling speed V ₀ is multiplied by the correction amount “PVave / SP = 1”. target running speed of the stowage stacker 7 becomes the reference running speed V _0.

And it transfers to step S8, sets the control target value of each part in a fixed drive area to the preset fixed value, respectively, the cut-out amount by fixed cut-out belt conveyor 3, the conveyance speed of conveyance belt conveyor 5 and boom belt conveyor 8 are set. Control is performed via the quantitative cut-out control device 13 and the stacking stacker control device 15 so that each becomes a control target value and the traveling speed of the stacking stacker 7 becomes the target traveling speed (= reference traveling speed V ₀ ).
For this reason, the stacker 7 travels at a constant speed at the target travel speed (= reference travel speed V ₀ ).

Furthermore, the general control device 17 starts calculating the correction amount when the tip of the boom belt conveyor 8 reaches a fixed drive section (sections x1 ′ to x2 ′), and proceeds from step S11 to step S12 in FIG. The actual conveyance amount per unit time Δt calculated by the cutout control device 13 is read from the quantitative cutout control device 13.
Based on the actual transport amount per unit time Δt, the actual transport amount average value PVave within the unit time ta for speed control is calculated, and the calculated actual transport amount average value PVave is divided by the target transport amount SP per unit time. Then, the correction amount “PVave / SP” is calculated (step S13).

Further, a period corresponding to the unit time ta for speed control in which the actual conveyance amount per unit time Δt used for the calculation of the average actual conveyance amount PVave is specified as the measurement period. Then, the specified measurement period and the correction amount in this measurement period are associated with each other and stored in a predetermined storage area (step S14).
By repeating this process, the correction amount “PVave / SP” is calculated for each unit time ta, and this is associated with the measurement period and stored in a predetermined storage area.

  For example, as shown in FIG. 2, when the transport actual amount average value in the measurement period ta1 is PVave1, the transport actual amount average value in the measurement period ta2 is PVave2, and the transport actual amount average value in the measurement period ta3 is PVave3. The correction amount in ta1 is stored as “PVave1 / SP” and measurement period ta1 (time t11 to time t12). Similarly, the correction amount in measurement period ta2 is “PVave2 / SP” and measurement period ta2 (time t12 to time t13). ), The correction amounts in the measurement period ta3 are stored in association with each other as “PVave3 / SP” and the measurement period ta3 (time point t13 to time point t14).

  In this way, the correction amount is calculated and sequentially stored in a predetermined storage area. In step S5 of the overall control process in FIG. 3, a measurement period corresponding to a time point that is the required transport time before the current time is set. When a state existing in the storage area is reached, the overall control device 17 reads the correction amount associated with the specified measurement period. Then, based on the read correction amount, the target travel speed Vtan is calculated from the equation (1), and control is performed via the stacking stacker control device 15 so that the stacking stacker 7 travels at the target travel speed Vtan.

This stowage stacker 7 would reference running speed V ₀ is traveling at the target running speed Vtan corrected according to the correction amount.
For this reason, when the tip of the boom belt conveyor 8 is in a constant drive section, a certain amount of raw material is cut out from the storage tank 1, and the conveyor belt conveyor 5 and the boom belt conveyor 8 are each at a constant conveyance speed. It is driven by. On the other hand, the stacking stacker 7 is driven according to the target travel speed Vtan corrected according to the actual conveyance amount.

That is, as shown in FIG. 2, the raw material that has passed the measurement position by the line meric 11 during the measurement periods ta1 and ta2 in which the actual conveyance amount is smaller than the target conveyance amount SP and the conveyance actual amount average value PVave <target conveyance amount SP. There at the time to be paid out from the boom belt conveyor 8, the reference running speed V ₀ is a target running speed Vtan is calculated to be smaller. On the other hand, when the material that has passed the measurement position by the line meric 11 in the measurement period ta3 in which the actual conveyance amount is larger than the target conveyance amount SP and the conveyance actual amount average value PVave> target conveyance amount SP is discharged from the boom belt conveyor 8. in, so that the target travel speed Vtan is calculated to be larger reference running speed V ₀ Gayori.

Here, in the quantitative cutout control device 13, the quantitative cutout belt conveyor 3 and the cutout mechanism are controlled so as to cut out a predetermined amount of raw material from the storage tank 1. There may be a difference between the target transport amount per unit time and the actual transport amount per unit time due to the delay of the control system with respect to the change in bulk specific gravity. However, the reference travel speed V ₀ of the stacking stacker 7 is corrected according to the difference between the target transport amount and the actual transport amount, and when the actual transport amount is smaller than the target transport amount, the reference travel speed V ₀ is delayed. On the other hand, when the actual conveyance amount is larger than the target conveyance amount, the reference traveling speed V ₀ is increased, so that the amount of raw material actually dispensed at each point when forming the pile 10 is determined by a constant cut-out belt conveyor. 3 can be constant regardless of the increase / decrease in the actual amount of conveyance, that is, the pile amount in the longitudinal direction of the pile 10 can be made uniform.

  From this state, when the tip of the boom belt conveyor 8 is outside the fixed drive section (sections x1 ′ to x2 ′) and approaches the end X2 side of the payout section (sections X1 to X2), the overall control device 17 Shifting from step S2 of FIG. 3 to step S3, each part is controlled via the quantitative cutout control device 13 and the stacking stacker control device 15, for example, the stacking stacker 7 is gradually decelerated as it approaches the end portion X2, Along with this, the cut-out amount from the storage tank 1 is reduced, and the transport speeds of the transport belt conveyor 5 and the boom belt conveyor 8 are gradually reduced.

Thereafter, the moving direction of the stacking stacker 7 is switched, and thereafter, each part is operated in the same procedure as that at the time of starting, and when the tip of the boom belt conveyor 8 reaches a fixed driving section (sections x1 'to x2'), The control device 17 shifts from step S2 in FIG. 3 to step S5, and drives each part constant with the control target value of each part as a constant value, and shifts from step S11 to step S12 in FIG. 4 to start calculating the correction amount. Then, the stacking stacker 7 is driven at a target travel speed obtained by correcting the reference travel speed V _{0 according} to the correction amount.

  This process is repeated, and when the stacking stacker 7 is reciprocated along the payout section (sections X1 to X2) and the stacking to the fixed drive section (sections x1 'to x2') is performed, the actual conveyance amount is obtained. Accordingly, since the traveling speed of the stacking stacker 7 is corrected, even if there is an error between the actual transport amount and the target transport amount, the amount of raw material actually stacked corresponds to the target transport amount. Can be adjusted, i.e. can be stacked in a uniform layer.

When a predetermined amount of the raw material of a certain brand in the storage tank 1 is finished, switching to the cutting of the raw material from another storage tank (not shown) in which another brand of raw material is stored is performed. Packing with.
Thus, by switching the brands of the raw materials to be stacked, the pile 10 composed of the blended raw materials in which the raw materials of a plurality of different brands are stacked in layers is formed.

Here, as described above, since the raw material can be uniformly stacked on the pile 10, each brand layer can also be formed uniformly in the longitudinal direction of the pile 10. For this reason, the component distribution of the blended raw material can be made uniform in the longitudinal direction of the pile 10. As a result, a blended raw material having a stable component distribution can be obtained in a lower process in which the raw material is cut out from the pile 10 of the blended raw material and subjected to a predetermined treatment.
In addition, in the said embodiment, although the case where the pile 10 of a mixing | blending raw material was formed was demonstrated, even if it is a case where only one certain kind of brand is piled up, it is applicable.

In the above embodiment, the target travel speed Vtan that suppresses the error between the actual transport amount and the target transport amount is obtained by multiplying the correction amount “PVave / SP” to correct the reference travel speed V _0. However, the present invention is not limited to this. For example, suppress the error of the conveying performance rate and the target carry amount by correcting the reference traveling speed V ₀ of the correction amount, addition or subtraction to corresponding to the error of the conveying actual amount average PVave and the target carry amount SP The target travel speed Vtan to be acquired may be acquired.

  In the above embodiment, the case where the correction amount “PVave / SP” is described as a value obtained by dividing the actual transport amount average value PVave within the unit time ta for speed control by the target transport amount SP. It is not limited. For example, an intermediate value, a maximum value, or a minimum value of the actual transport amount per unit time Δt within the unit time ta for speed control is set as a representative value of the actual transport amount within the unit time ta. A value obtained by dividing the representative value by the target transport amount SP can be used as the correction amount.

  For example, the correction amount is not limited to the case where a correction amount corresponding to the unit time ta for speed control is set. The correction amount is a value obtained by dividing the actual conveyance amount per unit time Δt by the target conveyance amount SP. Thus, the correction amount corresponding to this may be calculated for each unit time Δt in which the actual conveyance amount is calculated, and the time shorter than the unit time Δt by using the measurement signal of the line meric 11. You may make it calculate the correction amount corresponding to this every time.

  Moreover, in the said embodiment, the case where the amount of correction | amendment was calculated based on the measurement signal of the line merick 11 provided in the conveyance belt conveyor 5 used for the cutting-out control in the quantitative cut-out control apparatus 13 was demonstrated. However, it is not limited to this. For example, a line meric may be provided on the boom belt conveyor 8 and the correction amount may be calculated based on the line merrick. In short, as long as the actual conveyance amount can be obtained, it may be provided at any position on the raw material conveyance path. .

  Further, in the above embodiment, the case where the traveling speed of the stacking stacker 7 is corrected only when the tip of the boom belt conveyor 8 is in a fixed drive section (sections x1 ′ to x2 ′) has been described. The present invention is not limited, and is applicable to any situation as long as the raw material dispensed from the boom belt conveyor 8 can acquire the necessary transport time from when it passes the measurement position by the line merrick 11 until it is actually dispensed. can do. For example, when the boom belt conveyor 8 is outside a fixed drive section (sections x1 'to x2'), for example, the transport speed of the transport belt conveyor 5 or the boom belt conveyor 8 or the traveling speed of the stacking stacker 7 is reduced. However, if the deceleration pattern is determined and the required transfer time can be calculated from the deceleration pattern, the present invention can be applied even when the material is stacked outside the fixed drive section (sections x1 ′ to x2 ′). be able to.

  In the above-described embodiment, the quantitative cutout belt conveyor 3 and the quantitative cutout control device 13 correspond to the cutout means, the stacking stacker control device 15, the overall control device 17 and the overall control processing of FIG. 3 correspond to the travel control means. The line meric 11 corresponds to the actual conveyance amount detection means, and the correction amount calculation processing in FIG. 4 and the processing from step S5 to step S7 in FIG. 3 correspond to the target travel speed correction means.

DESCRIPTION OF SYMBOLS 1 Storage tank 3 Fixed quantity cut-out belt conveyor 5 Conveyor belt conveyor 7 Stacking stacker 8 Boom belt conveyor 10 Pile 11 Line melic 13 Fixed quantity cutting-out control apparatus 15 Stacking stacker control apparatus 17 General control apparatus

Claims (3)

A cutting means for cutting out the raw material so that the conveyance amount per unit time of the raw material becomes the target conveyance amount;
A stacking stacker that dispenses the raw material cut out by the cutting means;
Travel control means for causing the stacking stacker to travel at a target traveling speed and stacking the raw materials discharged from the stacking stacker to form a pile;
A transport result amount detecting means for detecting an actual transport amount per unit time cut out by the cutting means;
A raw material stacking apparatus comprising: a target travel speed correcting unit that corrects the target travel speed based on the actual transport amount detected by the actual transport amount detection unit and the target transport amount. A required transport time calculating means for calculating a required time from the time when the raw material passes the measurement position of the transport amount by the transport actual amount detection means to reach the position where the raw material is discharged from the stacking stacker;
The target travel speed correcting means corrects the target travel speed based on the actual transport amount and the target transport amount at a time point equivalent to the required time calculated by the required transport time calculating means. The raw material stacking apparatus according to claim 1. The cutout means is formed so as to cut out a plurality of different types of raw materials,
3. The raw material stacking apparatus according to claim 1, wherein a pile of blended raw materials composed of a plurality of different raw materials is formed as the pile.

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