JP2878055B2 - Raw material transport control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to raw material transfer control in a raw material yard, and more particularly, to a plurality of transfer operations performed simultaneously and simultaneously in a raw material yard facility for transferring and entering a raw material tank from a raw material yard to a raw material tank of a lower process plant. Related to transport control.

[0002]

2. Description of the Related Art In transport control in a raw material yard,
In the planning of the transfer plan, the operator was asked
Receiving, dispensing, transport equipment status, tank status, equipment repair plan,
Based on data such as equipment failure status, weather, allocation plan of tank and raw material brand, request from destination factory, etc., change of raw material level of tank is calculated, and the timing of tank input and receiving, dispensing, operating state of transfer equipment are trial and error. The raw material level of the tank does not deviate from the control range while receiving the
The decision was made to avoid transport equipment competition, system interference and approach interference.

[0003] With this conventional, intelligent processing method by the operator,
Are the most important items to consider in large-scale material yard facilities
And the amount of calculation is large, making it practical for non-expert operators.
Unable to make a plan and make a transportation work of about 8 hours
It takes more than one hour, and the individual differences are large.
It is also difficult to correct plans in real time due to sudden failure etc.
There was a problem that is. To solve this problem,
Various automatic control methods have been proposed. For example,
Japanese Patent Application Laid-Open No. 3-243508 discloses a knowledge base.
Automatic control method based on the yard plan based on
Japanese Patent Application Laid-Open No. Hei 4-89708 discloses a technique based on a knowledge base.
Automatic control method that maximizes the transportation efficiency of a closed ore yard
A method is proposed, and JP-A-4-89709 discloses a tank.
Knowledge base based on material simulationinference
ByAutomatic system to maximize coal yard transport efficiency
Your way is presented, JP-A-3-279124
Is a method for resolving conflicts in transport work centering on yard planning.
Has been presented.

[0004]

In the conventional method, the conflict between the loading / unloading facilities is resolved mainly by a yard plan.
In the operation of the raw material yard facility where the transfer equipment (system) is shared and the approach interference between the loading / unloading equipment frequently occurs, competition of the transfer equipment or loading equipment is required in the yard plan (daily unit). / It must be a plan that causes interference between the dispensers, and in the actual transfer work plan (hour and minute unit),
It was necessary to formulate an effective transfer plan to avoid competition between loading / unloading equipment, approach interference, and system interference of the transfer equipment.

Further, in the conventional method, a method has been proposed in which the priority of each transfer operation (system) is fixed and the transfer operations are sequentially assigned. In this method, a flexible operation among a plurality of operations is provided. It was difficult to make plan adjustments.

In the present invention, the loading, unloading and transfer equipment (system) is shared among a plurality of transfer operations, and the raw material yard equipment in which competition, interference and approach interference between the loading and unloading equipment occurs. In raw material transport control, by comprehending a detailed plan adjustment in units of hours and minutes with respect to the dispensing mountain, direction, amount, start / end time, etc. between multiple operations, competition of loading / dispensing equipment, interference with approaching The purpose of the present invention is to formulate a raw material transfer plan that can maximize the transfer efficiency while avoiding system interference of the transfer equipment and transfer equipment, and to perform automatic control.

[0007]

According to the present invention, a raw material transfer control system for a raw material yard facility includes a raw material receiving plan, a raw material use plan, a raw material yard plan, a factory operation plan, a facility repair plan, and the like.
Input means A for taking in the raw material yard state, tank state, equipment state, transfer operation results, and tank / brand allocation plan as operation precondition data from the operator; based on the input data taken in by the input means A Then, for each destination tank, calculate the change in the stock of raw material in the tank based on the current status of the reference time, and avoid the time of equipment repairs or failures, and the next entry time and quantity to prevent the tank inventory from running out of the control lower limit. Means B for calculating the feasible range of the equipment; selecting a dispensing mountain candidate for entering the tank, selecting a dispensing facility candidate associated with the corresponding dispensing mountain and a transport facility associated with the dispensing facility candidate , and selecting equipment for the dispensing work. Means C for calculating the approach interference range; from the calculation results of the means B and C relating to a plurality of next transfer work candidates, the work having the highest operation priority at the corresponding point in time is determined, and the payout / transfer equipment between the plurality of transfer works is determined. Competition,
Adjustment is made so as to avoid interference and approaching interference, and the dispensing equipment, transport equipment, dispensing hill used for each transfer operation and the means B are calculated and the start / end time and amount of tanks within the executable range are determined. Means D; means E for simulating the change of the stock of raw material in the tank, the change of the raw material yard, and the operation status of the receiving / discharging / transportation facility from the calculation result of the means D to the latest plan fixed time; the latest planned fixed time as a reference time Calculation means F for repeating the processing of the means B to E for the planning time; output means G for presenting the calculation results to the operator; control means H for controlling the receiving / paying / transporting equipment based on the calculation results; Calculation control means I for performing calculation and control by A to H each time a difference between a plan and an actual result occurs.

[0008]

This material transfer control system shares the loading, unloading, and transfer equipment (system) between multiple transfer operations, and because the multiple operations are performed in parallel, approach interference between the receiving and discharging equipment occurs. When applied to raw material yard equipment that can be obtained, equipment repairs and breakdowns can be avoided, tank inventory does not exceed the lower limit of control, stowage among multiple transport operations, conflict of transport equipment, interference, and approach interference. Avoid, look at individual plans,
In order to maximize the transfer efficiency by comprehensively adjusting, the dispensing hill, direction, dispensing, transfer equipment, tank start / end time, and quantity for each transfer operation are determined and based on this. Performs automatic transfer control.

[0009]

Next, an embodiment of the present invention for an ore yard will be described. FIG. 1 shows a system configuration of this embodiment. In FIG. 1, reference numeral 100 denotes a computer for production control (a vidicon). Here, a raw material yard on a monthly basis, such as a ship loading / unloading plan, a blast furnace / sintering production plan, a blast furnace / sintering operation stop plan, and a soaking ore mixing plan. A receipt / shipment plan is created.

Reference numeral 200 denotes a computer for controlling a raw material yard process (raw material processing computer). The production plan information created by the vidicon 100 is transmitted and input to the raw material processing computer 200. The input information in the raw material processing computer 200 is supplied to the supply and demand planning function group 220 through the reception editing process 210, specifically, the raw material yard arrangement planning function, the soot supply and demand planning function, the ore dispensing supply and demand planning function, the ore processing supply and demand plan. Function, sinter ore supply and demand planning function, and cargo handling acceptance planning function.

Reference numeral 500 denotes an I / F between a raw material process control and an operator.
An input / output CRT terminal device having an (interface) 250 is an input / output processing function for controlling the input / output of the CRT. Operating conditions 240 can be input from the CRT terminal device 500 as prerequisite information for the planning functions 220 and 230.

In the supply and demand planning function 220, a raw material yard arrangement plan is a plan of a yard change of incoming and outgoing raw materials on a daily basis,
The ore-loading supply and demand plan is a daily uniform ore loading plan for each brand, the ore payout supply-and-demand plan is a daily ore payout / reserve plan, and the ore processing supply and demand plan is a daily ore processing for each brand (ore ore sizing). Pulverization) plan, sinter ore supply and demand plan
For the cargo handling acceptance plan, an acceptance work JOB plan is prepared for each hour.

On the other hand, reference numeral 400 is a block diagram of a group of on-site equipment in the raw material yard. Reference numeral 410 denotes a mobile unit group (acceptor and dispenser), 420 denotes a conveyor group, and 430 denotes a weighing machine group. Reference numeral 300 denotes a lower-level controller for controlling the on-site equipment, which controls the on-site equipment 400 and manages the operation results and the current state. The controller device includes a mobile device control PC (programmable controller) 310 for controlling the mobile device group, and a conveyor control PC 3 for controlling the conveyor group.
20. The lower-level controller 300 for controlling the on-site equipment transmits the transport, weighing result information, equipment operation, and failure result information to the raw material process controller 200 in real time. The raw material process control 200 is used to collect and edit results 290
Then, the corresponding information is received and input, and stored in the data file as the equipment operation status and equipment failure status as the equipment status information 270, and the transfer work results, the yard status and the tank status information as the operation information 280.

The transport control planning function 230, which is a central function of the present invention, includes the above-mentioned prerequisites 240 such as the above-mentioned raw material yard receipt / shipment production plan, supply / demand plan 220, equipment repair plan, equipment status 270, and operation status 280. Enter the information,
For each transport system, that is, for ore yards, ore stacking system, ore (sizing / grinding) processing and transport system, blast furnace plain transport system, sintered plain transport system, sinter ore transport system, uniform ore dispensing transport Each transport control plan such as a system is drafted and displayed on the CRT terminal device 500 via the operator input / output processing 250,
At the same time, it is transmitted as transport control information to the field device control lower-level controller 300 via the setting control process 260 and is set for output.

Lower controller 300 for controlling field devices
Performs transport control according to the transport control information, and transmits the transport result information to the raw material process control 200. In the raw material processing computer 200, the transfer control information is reviewed in real time by the transfer control planning function 230 based on the corresponding actual information, and the transfer control information is transferred to the lower level controller 3 for controlling the on-site equipment.
The automatic transfer control is performed by repeating the cycle of transmitting to 00 and setting the output,....

Next, the processing procedure of the tank entry work planning section of the transfer control planning function 230 (FIG. 1) of the raw material process control 200, which is the central processing of the present invention, will be described with reference to the flowchart of FIG.

(1) Data input, initial value, condition setting (F10 in FIG. 2) Information required for this processing (raw material receipt / shipment plan, supply / demand plan, equipment repair plan, operation precondition, equipment operation status, equipment failure status , Current status of yard, current status of tank inventory, actual results of transfer work) are input from each file and edited.

(2) Calculation of transfer job JOB start time range for each transfer system (F20 in FIG. 2) For each system and for each tank, the tank stock is cut off at the reference time (simulation time, the current time is first). The tank inventory is calculated based on the output speed, and the tank inventory does not fall below the lower control limit in consideration of system / mobile equipment repair, failure, tank repair / failure, factory shutdown, and system interference with the determined upper-level transfer JOB. Calculate the feasible entry JOB start time range to avoid repair and system interference. 3 to 6 show examples of calculation results. Note that the transfer job JOB start time range is a value obtained by subtracting the moving device moving set time from the tank entering time. (3) Calculating interference range of mobile device approaching (F30 in FIG. 2) The approaching interference range of the determined receiving JOB and the determined payout JOB in the operating range of the mobile device is calculated for each mountain around the interference range. Also, the approach interference range when paying out the candidate mountain corresponding to the tank brand calculated in F20 from each of the east and west directions is calculated for each of the surrounding mountains, and the overlapping process with the above interference range is performed. It is calculated as the eastern payable amount and the west payable amount for each mountain at the time (in this example, yards laid east and west). 7 to 9 show several examples of the interference range. Table 1
Shows an example of the calculation result.

[0019]

[Table 1]

(4) Job allocation, mountain, mobile, system linking (F40 in FIG. 2) Importance of the system, flexibility of tank inventory lower limit management time calculated at F20 and F30 and transfer job start time range , A transport job to be given priority is selected from a plurality of next transport job candidates, a transport job start time and an amount are determined from within a transport job start time range, and a payout mountain, a payout direction, a mobile device, and a transport system are determined. Are determined at the same time, and the same is repeated for the next priority transport job. The transport job is determined in such a way that there is no undetermined transport job in the time axis direction. If the transport job start time range of a certain system is further in the future than the determined transport job end time, the relevant transport job is assigned the following. Perform at the reference time. 10 and 11 show an example of the assignment.

If there is no interference work, the transport JO
Regarding the start time and amount of B, the tank is filled up to the full tank at the maximum time of the transfer job start time range so that the tank entry amount is maximized for efficiency, and the payout mountain and direction follow the yard plan result.
In addition, work efficiency is improved by continuously loading the same brand.

If there is an interfering operation (the delivery JOB start time range overlaps and the dispensing machine or the transportation equipment competes, interferes or interferes closely), the transportation JOB is performed as follows.
Adjust Plan B; Dispense Mountain and Direction Adjustment in Case of Competition and Approaching Interference If there are a plurality of the same brands, select a dispensing mountain from the calculation result of F30 to prevent competition and approaching interference. When there is only one peak, approach interference is prevented by selecting the payout direction. If the conflict or approach interference cannot be prevented, the process is performed. Time adjustment in the case of conflict, interference or approach interference If the maximum time of the transport JOB start time is large, it is assigned to the maximum time, and one of the tasks that competes or interferes Is assigned to a time that can be as large as possible, as far back as possible from that time, to prevent competition, interference or approach interference in terms of time, and to maximize transport work efficiency.

(5) Update of reference time (F50 in FIG. 2) From the transport job determined in (4) above, to the time when there are no undetermined items on the time axis, that is, the time when all plans have been determined, Advance the reference time.

(6) Judgment of end of plan range (F60 in FIG. 2) The plan is drafted by advancing the reference time, and the reference time is within the plan preparation time range (for example, one shift equivalent, ie, eight hours from the current time). Are compared, and if it is exceeded, the process is terminated.

(7) Updating of Tank Stock (F70 in FIG. 2) The stock of each tank at the reference time advanced in the reference time update processing F50 is calculated. (8) Updating the yard map (F80 in FIG. 2) The stock amount, east position, and west position of each yard at the reference time advanced in the reference time update processing F50 are calculated. At the same time, the position of the mobile device is calculated.

(9) Edit of transfer work plan (F90 in FIG. 2) The transfer job plan information determined in the above processing is edited into setting control information to be set in the lower controller for equipment control.

In accordance with the above-described processing flow, with respect to the transport control for simultaneously carrying out a plurality of transport operations, which is the object of the present invention, in a raw material yard facility in which competition, interference, and approach interference between receiving and discharging facilities occur. In addition, by performing detailed planning and adjustment of the dispensing hill, direction, amount, and the like in units of time between a plurality of operations, competition, interference, and approach interference are avoided, and material transfer planning and control that can maximize transfer efficiency are performed.

Next, an example of the calculation in the entry work JOB start time range calculation (F20) for each transport system in the flowchart of FIG. 2 will be described with reference to FIGS. 3, 4, and 5. FIG.

The graph of FIG. 3 shows the change in inventory of an arbitrary destination tank after the reference time, with the vertical axis representing the inventory level (ton) and the horizontal axis representing the time (minutes) from the reference time. , The solid line falling to the right indicates the inventory change when the tank does not enter. Each tank has a management upper and lower limit value (broken line), and the operation is performed so that the stock amount does not deviate from the range of the broken line.

In the normal case shown in FIG. 3, that is, when there is no repair or failure of the mobile unit, the transport system, and the tank, the next entry JOB start time range is as shown in FIG. Is the lower limit and reaches the maximum time as the tank entry amount, and the number of JOBs is one. Note that the minimum JO
B is a lower limit numerical value in terms of work efficiency.

In the case shown in FIGS. 4 (a), (b), (c) and (d) where the mobile unit and the transport system have a repair or a failure, the equipment cannot be used during the repair time. There is a restriction that it is necessary to perform a tank entry operation to secure the stock so that the tank stock does not run out during the time period. In this case, the dotted line falling to the right in FIG. 4 is the line that reaches the control lower limit value at the time of repair or failure end, and it is sufficient to secure inventory above this dotted line before repair. Hereinafter, the method will be exemplified and described in four cases.

In FIG. 4 (a), when entering the tank with the minimum JOB, the lower limit is expired in the repair time zone. Therefore, entering the tank with a small JOB requires 2 JOBs. This is the case where the range is larger than the range and 1 job can be satisfied. At that time, the tank entry job start time range is two types, 2 job aim and 1 job aim. FIG. 4B shows a case where even if the minimum JOB is entered once, it is possible to prevent the lower limit from being exhausted during the repair period.
In this case, it is 1 JOB. The example of FIG. 4C is a case where there is a repair time in the latest, and in this case, it is not possible to enter the tank during the repair time zone, so the time range is divided into two before and after the repair. The example of FIG. 4D is a case where a failure occurs at the reference time, and in this case, it becomes possible to enter the tank after recovery from the failure.

FIG. 5 shows a case in which the tank is repaired, the repair tank is emptied, and another spare tank is used during that time. In this case, the tank is emptied at the designated time in FIG. The inventory is controlled along the empty tank target line shown by the solid line. In FIG.
(a) does not get on the empty tank aim line in 1JOB, but 2JO
In this example, the first JOB is the minimum JOB
From the time when the minimum JOB tank is formed for the second time. FIG. 5 (b) is an example in which the user can get on the empty tank aiming line at 1 JOB, and FIG. 5 (c) shows that even with the minimum JOB, the repair tank exceeds the empty tank aiming line and the repair end time in the spare tank. This is an example that covers up. FIG. 5 (d) shows an example in which even if the spare tank is entered with the minimum JOB, the repair end time is exceeded.

The method is the same in the case where the tank is repaired and no empty tank is specified in the repair tank, and the case where the tank cutting speed is changed. An example of the calculation formula will be described with reference to FIG.

FIG. 6 is a view showing the job entering job JOB shown in FIGS.
Start time range and entry JO at any time in between
5 is a description of a method of calculating the maximum time of B. In the graph shown in FIG. 6, the horizontal axis X indicates time, and the vertical axis Y indicates tank stock. As parameters of the calculation formula, α: entry speed at the time of entry (ton / h), β: tank cut-out speed (ton / h), Tmin: minimum JOB time (h), Z _U : upper limit of tank inventory management Value (to
n), Z _L : tank stock lower limit management value (ton), Z _S : reference time (X = 0) tank stock quantity (ton), T _n : arbitrary tank JOB
The start time (h), and the data to be calculated to be passed to the job assignment processing, are T ₁ : minimum value of the entry job start time range (h), and T ₂ : maximum value of the entry job start time range (h). . In this case, T ₁ and T ₂ are calculated by the following equations (1) and (2): T ₁ = {Z _S −Z _U + (α−β) × T min} / β (h) (1) T ₂ = (Z _S −Z _L ) / β (h) (2) When T ₁ <0 in the calculation result, T ₁ = 0. Further, JOB maximum time at any T _n of _{T 1 ≦ T n ≦ T 2} , i.e. the time J _tmax required until Mitsuruso is calculated by the following equation (3); J _tmax = (Z _U -Z _S + βT _n ) / (α-β) (h) (3) Calculation of the mobile station approach interference range (F3) in the flowchart of FIG.
The calculation example in (0) will be described with reference to FIGS. 7, 8, and 9. FIG.

FIG. 7 is a schematic view of a raw material yard laid in the east and west. Y10 and Y20 are yards, Y30 and Y40 are raw materials piles placed in the yard, Y50 is a dispensing machine (or loading machine), Y60 is a boom, hatched portions Y70 and Y80 are hatching interference areas during dispensing of dispensing machine Y50, and Y90 is a west distributable portion of mountain Y30 (mountain Y).
Reference numeral 30 denotes an east side payout unavailable), Y100 denotes a west side payable portion of the mountain Y40, and Y110 denotes an east side payable portion.
That is, the approach interference refers to a state in which a certain dispensing machine or a stowage machine is not working and another dispensing machine is inaccessible, so that all of the nearby mountains cannot be dispensed (Y70 and Y80 in the drawing).
Hereinafter, a method of calculating the loading and dispensing or the approach interference between dispensing and dispensing will be illustrated for each of several cases.

FIG. 8 shows an example of interference between stowage (fixed-point stowage) and payout, that is, an example in which a stowage machine at a certain mountain cannot carry out a stowage while a stowage machine is in a stowage operation. In FIG. 8, the dispensing machine and the loading machine are arranged as follows: two dispensing machines are located on the north side of the a yard (RC1, RC2), and one loading machine is between the a yard and the b yard (ST). Yes, there are 2 payout machines (RC3, RC4) on the south side of b yard, RC1 and RC2
Will be described with an example of a constraint condition that payouts on both sides of the east and west can be made, but RC3 and RC4 cannot be paid out on the west side.

FIG. 8A shows a case where the mountain B in the figure is stacked. In this case, all the peaks A and D can be paid out without any influence. Mountain B is currently being stowed and generally cannot be paid out. As for the payout from the west side, the approach interference range including the boom length of the payout machine (64 m in this example) for the mountains C and E.
And cannot be paid out. On the east side, you can pay out the part m in the figure.
Since C3 or RC4 cannot be paid out on the east side, it cannot be paid out on the east side.

FIG. 8B shows a case where the mountain D in the figure is stacked. In this case, all the peaks A and D can be paid out without any influence. D is being stowed and cannot be paid out. With regard to Mt. B and Mt. E, the payout from the west side is the approach interference range including the boom length of the payout machine (64 m in this example).
And cannot be paid out. For Mt. B, the part m in the figure can be paid for the east side, but for Mt.
Since C3 or RC4 cannot be paid out on the east side, it cannot be paid out on the east side.

FIG. 9 shows an example of interference between dispensing and dispensing, that is, an example in which a dispensing machine on a certain mountain cannot perform dispensing while a dispensing machine on the mountain is dispensing. In FIG. 9, the dispensing machine and the stowage machine are arranged as two dispensing machines (RC1 and RC2) between the c yard and the a yard, and RC1 and RC2 can pay both east and west. explain.

FIG. 9A shows a case where the mountain B or D shown in FIG. 9 is paid out westward by RC1, and a case where RC2 is also paid out in the same direction (west side). In this case, payout by RC2 is restricted by approach interference. The approach interference range is the approach interference range on the west side of RC1 (42.5 in this example).
In the case of m), west payment by RC2 is not possible. That is, in the case shown in the figure, it is impossible to pay out the east side of the mountain A and the mountain C, and it is possible to pay out the portion corresponding to m, 1 (L in the alphabet) of the figure from the west side.

FIG. 9B shows a case where the peak C or the peak F in FIG.
In the case of paying west at C1, RC2 is in the opposite direction (east)
This is the case of paying out. Also in this case, the payout by RC2 is restricted by the approach interference. As the approach interference range, a mountain in the approach interference range (116.5 m in this example) including the boom length of RC2 on the west side of RC1 cannot be disbursed on the east side in RC2. That is, in the case shown in FIG.
Mountains cannot be paid out, and Mountains A and D can all be paid out.

With the above concept, it is possible to pay out each mountain by approach interference according to the specifications of the stowage machine or the payout machine and the mountain arrangement of each yard in an appropriate working time zone for an arbitrary stowage or payout operation. Calculate the amount.

Next, with respect to the values individually calculated for each operation in the above calculation, the superposition calculation in time and space between a plurality of operations is logically ORed. For example, due to the approach interference of the work from 15:00 to 16:00, the eastern payable amount of Mt. A is 3,000t, and the west payable amount is 2,000t.
000t, and if the eastward payable amount of Mt. A is 1,000t and the westward payable amount is 1,000t due to another interference of work from 15:30 to 15:50, the payout of Mt. Possible amount is 15:10 to 15:30, east side 3,000
t, 2,000 t on the west, 15: 10-15: 30 on the east
000t, west 1,000t, 15: 50-16: 00 becomes east 3,000t and west 2,000t. This data is edited in the form shown in Table 1 and is used to determine the payable amount in the corresponding time zone when the payout mountain is selected.

In the conventional raw material transfer plan control, there is no consideration of such approach interference, and a practical plan can be made by the present invention.

Job allocation (F4) in the flowchart of FIG.
The processing method in (0) will be described with reference to FIGS.

FIG. 10 shows the next input for each tank of a certain system at the reference time calculated by the transfer job JOB start time range calculation of the flowchart of FIG. 2 (described in FIGS. 3, 4, 5, and 6). The tank JOB start time range, the vertical axis represents the tank, and the horizontal axis represents the time from the reference time. Generally, the next entry JOB start time range for each tank overlaps as shown in the figure. In this method, the next job and the next job that are actually entered are assigned as follows: continuous entry with the current job (the same brand), inventory lower limit management end time (maximum time in the entry job start time range). It is determined according to the standard depending on the degree of urgency.
In the example shown in the figure, the next job and the next job are selected in the order in which the inventory lower limit management end time is approaching.

FIG. 11 shows an example of a method for determining the start and end times of the selected job. Normally, the larger the amount of one tank, the greater the transfer work efficiency. Therefore, it is planned to enter the tank at the maximum time of the transfer job JOB start time range.
If the JOB inventory management lower limit time is approaching one after another, the time is adjusted.

FIG. 11A shows an example in which a high-order job having a higher priority is already assigned to the end of the selected next job. In this case, as shown in FIG. The next job is allocated at the time when the maximum entry is possible.

FIG. 11 (b) shows an example in which the job management lower limit time of the next job is approaching one after another. In this case as well, as shown in FIG. Assign the next job.

With the above processing, at the reference time,
The assignment order and start / end time of the next job can be determined from the overlapping combinations of the transfer job JOB start time ranges for a plurality of tanks in a certain system. Then, the reference time is updated until the time when a series of jobs is determined, and the same processing is repeated.

In this way, it is possible to make a plan while adjusting the tank transfer work plan for each system and each tank in accordance with the flowchart of FIG. 2, and the transfer control system shown in FIG. Automatic transport control can be performed by the same method.

[0053]

As described above, with respect to the transfer control in the raw material yard equipment for iron ore and coal, the receiving, discharging, and transfer equipment (system) are shared among a plurality of transfer operations, and the plurality of operations are performed in parallel. The following effects can be realized by the control system of the present invention in the raw material transport control of equipment that may cause approach interference between the receiving and discharging equipment.

(1) In automatic transfer control, equipment repairs and breakdowns are avoided, the tank inventory does not run out of the lower limit of control, and not only avoidance of payout among a plurality of transfer operations, transfer equipment conflicts, and system interference, but also It has become possible to avoid the interference between the dispensing machine and the loading machine, which has frequently occurred in the past.

(2) Instead of deciding the transfer work plan in order of priority for each system as in the prior art, it is possible to determine the start / end times between transfer works and to carry out the transfer by taking a bird's-eye view of the executable range of the work of a plurality of systems. In order to adjust the linkage of the equipment while adjusting each other,
More detailed plans can now be made.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a system configuration according to an embodiment of the present invention.

2 is a flowchart showing processing contents of a tank entry work planning function, which is a central function of the process control calculation material 200 shown in FIG.

FIG. 3 is a graph showing an example of a calculation result of a transport job JOB start time range calculation F20 shown in FIG. 2;

FIG. 4 is a graph showing several examples of calculation results of a transport work JOB start time range calculation F20 shown in FIG. 2;

FIG. 5 is a graph showing several examples of calculation results of a transport job JOB start time range calculation F20 shown in FIG. 2;

FIG. 6 is a graph showing an example of a calculation formula of a transfer job JOB start time range calculation F20 shown in FIG. 2;

FIG. 7 is a plan view showing an approach interference range of a loading machine and a dispensing machine in a raw material yard.

FIG. 8 is a plan view showing an approach interference range of a loading machine and a dispensing machine in a raw material yard.

FIG. 9 is a plan view showing the approach interference range of the loading machine and the dispensing machine in the raw material yard.

10 is a graph showing an example of a calculation result of job allocation, mountain, mobile device, and system linking F40 shown in FIG. 2;

11 is a graph showing several examples of calculation results of the job allocation, mountain, mobile device, and system link F40 shown in FIG. 2;

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor, Shuji Tomita 1 Oshinoshi, Oita, Nippon Steel Corporation Inside Oita Works (72) Inventor, Satoshi Hatano 1st Nishinosu, Oita, Oita Nippon Steel Corporation Oita Works (72) Inventor Takeshi Ken Maruyama 1 Oshino-shi, Oita City Nippon Steel Corporation Oita Works (58) Fields surveyed (Int.Cl. ⁶ , DB name) ) B65G 43/00

Claims (1)

(57) [Claims] 1. Raw material receiving plan, raw material use plan, raw material yard plan, factory operation plan, equipment repair plan, raw material yard current situation,
Input means A for taking in the current state of the tank, the current state of the equipment, the actual results of the transfer work, and the tank / brand allocation plan which is the operation prerequisite data from the operator; based on the input data taken in by the input means A, each input tank A , Means to calculate the raw material stock transition of the tank based on the current situation at the reference time, and to calculate the feasible range of the next entry time and quantity so as to avoid equipment repair and failure time zone and the tank stock does not exceed the lower limit of management B: means C for selecting a dispensing mountain candidate for entering the tank, selecting a dispensing facility candidate associated with the dispensing mountain and a transport facility associated with the dispensing facility candidate , and calculating an equipment approach interference range in the dispensing work. From the calculation results of the means B and C concerning the plurality of next transfer work candidates, the work having the highest operation priority at the time is determined, and the competition of the dispensing / transportation equipment among the plurality of transfer works,
Adjustment is made so as to avoid interference and approaching interference, and the dispensing equipment, transport equipment, dispensing hill used for each transfer operation and the means B are calculated and the start / end time and amount of tanks within the executable range are determined. Means D; means E for simulating the change of the stock of raw material in the tank, the change of the raw material yard, and the operation status of the receiving / discharging / transportation facility from the calculation result of the means D to the latest plan fixed time; the latest planned fixed time as a reference time Calculation means F for repeating the processing of the means B to E for the planning time; output means G for presenting the calculation results to the operator; control means H for controlling the receiving / paying / transporting equipment based on the calculation results; A raw material transport control system for raw material yard equipment, comprising: calculation control means I for performing calculation and control by the above A to H each time a difference between a plan and an actual result occurs.