Crusher operation control device and operation control method

Abstract

This invention provides an operation control device and operation control method for a crusher that can be automatically controlled based on liner wear. [Solution] The crusher operation control device 10 of the present invention includes a level meter 14 that measures the level value of the crushing material fed into the crusher 12, A particle size distribution measuring unit 20 measures the particle size distribution of the crushed material discharged from the crusher 12, The set measuring unit 16 measures the set value which is the minimum gap formed between the movable and fixed parts of the liner of the crusher 12, The system is characterized by having a liner wear estimation unit 26 that calculates an estimated amount of liner wear based on the power value and operating time of the drive motor of the crusher 12 and the level value, calculates a set value from the current particle size distribution, compares the measured set value with the calculated set value, and updates the estimated amount of wear when the difference is large and the change in the particle size distribution is greater than the target value.

Description

Technical Field

[0001] The present invention relates to an operation control device and an operation control method for a crusher.

Background Art

[0002] In a gyratory crusher such as a cone crusher, raw material is supplied and crushed between a mantle attached so as to cover a head that rotates eccentrically about a vertical axis and moves up and down, and a bowl liner inside a bowl that is fixedly disposed on the outer periphery thereof. The minimum gap formed between the mantle and the bowl liner of the crusher is called a set value or a setting, and the product size of the crusher can be controlled by adjusting this set value. Conventionally, an operator has adjusted the set value by looking at the product particle size. In addition, the set value has been changed based on the operator's experience and intuition from the operation time. For example, when dealing with hard stones, a set value change of several millimeters per several hours is required.

[0003] In order to reduce the burden on the operator, the system disclosed in Patent Document 1 adjusts control parameters including the interval value of the crushing space in the crusher when the particle size distribution estimated by a particle size distribution estimation device is outside the target range. However, in the case where the change amount of the product particle size is detected to be large due to the influence of disturbances such as liner wear in the estimated value of the particle size distribution, there is a possibility that the command of the set value becomes unstable and an unstable state occurs. In addition, a delay occurs due to feedback control. There is a problem that it is difficult to adjust the parameters because a minute change amount of the set adjustment is fed back by the change in the particle size distribution. Conventionally, operation control has been performed for a single crusher. That is, there has been no operation control for the entire crushing plant having a plurality of crushers such as primary to tertiary crushers, and the crushers have been controlled individually.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] The problem that this invention aims to solve is, in view of the problems of the prior art described above, to provide an operation control device and operation control method for a crusher that can be automatically controlled based on liner wear. It also aims to provide an operation control device and operation control method for an entire crushing plant having multiple crushers and sizing machines. [Means for solving the problem]

[0006] The present invention, as a first means to solve the above problems, provides a level meter for measuring the level value of crushed raw materials fed into a crusher, A particle size distribution measuring unit for measuring the particle size distribution of the crushed material discharged from the crusher, A set measuring unit that measures the set value which is the minimum gap formed between the movable and fixed parts of the liner of the crusher, The objective is to provide an operation control device for a crusher, characterized by comprising a liner wear estimation unit that calculates an estimated amount of liner wear based on the power value and operating time of the crusher's drive motor and the level value, calculates a set value from the current particle size distribution, compares the measured set value with the calculated set value, and updates the estimated amount of wear when the difference is large and the change in the particle size distribution is greater than the target value. According to the first method described above, while set values ​​were conventionally changed manually based on experience, intuition, etc., it is now possible to obtain an estimated wear amount value that estimates the amount of liner wear without relying on such manual methods.

[0007] As a second means for solving the above problems, the present invention provides a crusher operation control device characterized in that, in the first means, it includes a set adjustment control device that calculates a set value based on the wear amount estimate of the liner wear estimation unit and the particle size distribution of the particle size distribution measurement unit. According to the second method described above, even during operation, the crusher can be controlled by calculating a set value from the estimated wear amount of the liner without manual intervention.

[0008] As a third means to solve the above problems, the present invention provides a crusher operation control device characterized in that, in the second means, it calculates individual liner life coefficients for the plurality of crushers from the wear amount estimates of the liner wear estimation units provided for each of the plurality of crushers, calculates or changes the crushing ratio of the crushers based on the liner life coefficients, and calculates the set values ​​of the plurality of crushers, product particle size, and speed setting values ​​by simulating based on the obtained crushing ratio and the particle size distribution of each crusher. According to the third method described above, in a crushing plant having multiple crushers, the operation of each crusher can be controlled so that it achieves the optimal set value and particle size.

[0009] As a fourth means to solve the above problems, the present invention provides a crusher operation control device characterized in that, in the third means, a granulator is located downstream of the crusher, and the central control unit calculates the rotation speed based on the particle size distribution of the crushed material discharged from the granulator. According to the third method described above, in a crushing plant having a sizing machine downstream of multiple crushers, the operation of each crusher and sizing machine can be controlled so that they have the optimal set values, rotation speed, and particle size.

[0010] As a fifth means for solving the above problems, the present invention provides a method for controlling the operation of a crusher in which a computer controls the operation of the crusher, The computer performs the steps of obtaining the level value of the crushing material fed into the crusher, the particle size distribution of the crushed material discharged from the crusher, and the set value of the minimum gap formed between the movable and fixed parts of the crusher's liner. The objective is to provide a crusher operation control method characterized by having the following steps: calculating an estimated wear amount of the liner based on the power value and operating time of the crusher's drive motor and the level value; calculating a set value from the current particle size distribution; comparing the measured set value with the calculated set value; and updating the estimated wear amount when the difference is large and the change in the particle size distribution is greater than the target value. According to the fourth method described above, while set values ​​were conventionally changed manually based on experience, intuition, etc., it is now possible to obtain an estimated wear amount value that estimates the amount of liner wear without relying on such manual methods.

[0011] The present invention provides a crusher operation control method characterized in that, as a sixth means for solving the above problems, the fifth means includes a step of calculating a set value based on the estimated wear amount and the particle size distribution. According to the fifth method described above, while the set value was conventionally changed manually, the set value can be automatically controlled without manual intervention by calculating an estimated amount of liner wear.

[0012] The present invention provides a crusher operation control method characterized in that, as a seventh means for solving the above problems, the sixth means includes the step of calculating individual liner life coefficients for the plurality of crushers from the wear amount estimates of the liner wear estimation units provided for each of the plurality of crushers, calculating or changing the crushing ratio of the crushers based on the liner life coefficients, and calculating the set values ​​and speed setting values ​​of the plurality of crushers by simulation based on the obtained crushing ratios and the particle size distribution of each crusher. According to the sixth means described above, in a crushing plant having multiple crushers, the operation of each crusher can be controlled so that it achieves the optimal set value and particle size. [Effects of the Invention]

[0013] According to the present invention, while the set value was conventionally changed manually, the set value can be automatically controlled without human intervention by calculating an estimated amount of liner wear.

Brief Description of the Drawings

[0014] [Figure 1] It is a schematic configuration diagram of the operation control device of the crusher of the present invention. [Figure 2] It is a flowchart of the processing of the liner wear estimation unit. [Figure 3] It is a flowchart of the processing of the set adjustment control unit. [Figure 4] It is an explanatory diagram of the operation control device of the crushing plant. [Figure 5] It is a flowchart of the operation control method of the crushing plant. [Figure 6] It is an explanatory diagram of a modified example of the operation control device of the crushing plant.

Modes for Carrying Out the Invention

[0015] The embodiments of the operation control device of the crusher of the present invention will be described in detail below with reference to the drawings. [[ID=3l]]

[0016] [Operation Control Device 10 of Crusher] FIG. 1 is a schematic configuration diagram of the operation control device of the crusher of the present invention. As shown in the figure, the operation control device 10 of the crusher of the present invention mainly includes a crusher 12, a measuring means having a level meter 14, a set measurement unit 16, a camera 18, and a particle size distribution measurement unit 20 attached to the crusher 12, and a control means 32 having a quantitative control unit 24, a set adjustment control unit 28, a liner wear estimation unit 26, and a particle size distribution acquisition unit 22 as the main basic configuration. The operation control device 10 of the crusher can be realized by using a computer system equipped with a communication unit, a storage unit (such as RAM, ROM, etc.), an arithmetic processing unit (CPU: Central Processing Unit), an input unit (such as a keyboard, a touch panel, etc.), a display unit (a screen), etc., reading a program from the storage unit, and executing the program.

[0017] The crusher 12 is either a cone crusher, where the raw material is crushed between a mantle mounted over a head that rotates eccentrically around a vertical axis and moves up and down, and a bowl liner inside a bowl stationary around its outer circumference, or a jaw crusher, where the raw material is crushed by gripping it with swing jaws. The crusher 12 has an input feeder 11 above the raw material input port and a discharge feeder 13 below the crushed material discharge port. Operating data such as the current value, power value, and operating time of the drive motor of the crusher 12 are output to the quantitative control unit 24, liner wear estimation unit 26, and central control unit 40, which will be described later. The level gauge 14 is a sensor that measures the level value which represents the (piled) height of the crushed material fed into the hopper of the crusher 12. The measured value from the level gauge 14 is output to the quantitative control unit 24 and the liner wear estimation unit 26, which will be described later.

[0018] The set measurement unit 16 measures the set value which is the minimum gap formed between the mantle and liner of the crusher 12. The crusher 12 has a fixed part and a movable part of the liner, and the gap between the fixed part and the movable part of the liner is the set value. The set can be adjusted, for example, by opening and closing the set using a solenoid valve provided in the hydraulic circuit. The movable part of the liner has a set measurement unit 16 equipped with a position detection function, which can detect the amount of movement. The set value from the set measurement unit 16 is output to the liner wear estimation unit 26 and the set adjustment control unit 28, which will be described later. Camera 18 captures images of the crushed material discharged from the crusher 12. The particle size distribution measurement unit 20 measures the particle size distribution of the crushed material by processing the images captured by the camera 18. The particle size distribution acquisition unit 22 is connected to the particle size distribution measurement unit 20 via a communication protocol (e.g., Modbus) and acquires the particle size distribution in real time. The particle size distribution from the particle size distribution acquisition unit 22 is output to the liner wear estimation unit 26, the set adjustment control unit 28, and the central control unit 40, which will be described later.

[0019] The quantitative control unit 24 receives operating data from the crusher 12 (current value, power value, operating time, etc.) and the level value measured by the level gauge 14, and issues a speed command to the input feeder 11 based on the speed setting value from the central control unit 40. Specifically, the quantitative control unit 24 determines whether the acquired level value is within a predetermined target range, and if the measured value is above the target value (excessive supply of crushing material), it decelerates the input feeder 11, and if the measured value is below the target value (insufficient crushing material), it increases the speed of the input feeder 11 to control it so that the measured value reaches the target value. Furthermore, the system determines whether the acquired power value is within a predetermined target range. If the measured value is above the target value (indicating an excess of crushing material and an overload), the feeder 11 is decelerated and controlled to bring the measured value to the target value. If both the level value and power value are within the target range, quantitative control is initiated. This allows for a quantitative supply of crushing material to the crusher 12 during operation.

[0020] The liner wear estimation unit 26 estimates the amount of liner wear based on the power value, current value, and operating time of the crusher 12, as well as the particle size distribution and level value, without relying on human error such as experience or intuition. As the amount of liner wear increases, the set value increases and the product particle size also increases. The liner wear estimation unit 26 detects the product particle size under stable conditions with predetermined power and predetermined level values, and estimates the amount of wear based on the operating data (power value, current value, operating time) and particle size distribution values.

[0021] Figure 2 is a processing flow diagram of the liner wear estimation unit 26. (S100) The set value measured by the set measurement unit 16 is acquired. (S101) The current amount of wear is calculated. The amount of movement from the measured set value to the set value of a new part is calculated, and the amount of movement = total wear. This value is then transmitted as data to the central control unit 40. Next, the crushing operation of the crusher 12 is started. (S102) Obtain the power value of the crusher 12 and measure the operating time. (S103) Obtain the level value from the total level of 14. (S104) The particle size distribution is obtained from the particle size distribution acquisition unit 22. (S105) Determine whether or not the machine is operating normally. If the machine is operating within the power and level range set in the specifications of each crusher, it is determined to be operating normally. If NO, wait until normal operation is reached (continue).

[0022] (S106) Start the calculation of the wear amount estimate. The product particle size is detected under stable conditions with a predetermined power and predetermined level value, and the wear amount is estimated based on the particle size distribution value. (S107) The set value is calculated from the current particle size distribution. A simulation is performed to predict the product particle size using the particle size of the raw material, its fracturability (how easily the raw material breaks), and the set value as input values. The set value can be determined from the product particle size measured by reverse calculation. The difference between the calculated set value and the current set value is the liner wear amount. (S108) After the start of the wear amount estimation calculation in S106, the change in particle size of the acquired particle size distribution is monitored. Since the change in particle size distribution is proportional to the change in liner wear, the change in particle size is monitored on a time basis, and the relationship between the change in particle size distribution and the liner wear is calculated using the simulation described in (S107), and the liner wear is calculated from the change in particle size distribution.

[0023] (S109) Based on the crushability of the raw material, a difference between the actual set value and the calculated set value is set in advance, and the actual set value and the calculated set value are compared to determine whether the difference is large or not. In other words, the actual set value of the crusher is compared with the set value estimated from the particle size distribution, and if the set value estimated from the particle size distribution is larger, it is determined that wear is occurring. If NO, the state monitoring continues without updating the estimated amount of wear. (S110) An arbitrary particle size distribution change is set from the particle size distribution change amount in S108, and it is determined whether the change amount is greater than the target value. If NO, monitoring continues without updating the estimated wear amount. (S111) Update the estimated liner wear amount. Compare the different liner wear amount estimates from S109 and S110 and update the liner wear amount estimate. By removing exceptions such as disturbance elements and cases where the liner wear amount is negative, a stable liner wear amount that is robust against disturbance factors can be calculated. (S112) The estimated wear amount is output to the set adjustment control unit 28 and the central control unit 40.

[0024] The set adjustment control unit 28 calculates the set value based on the wear amount estimate from the liner wear estimation unit 26 and the particle size distribution from the particle size distribution acquisition unit 22. The set adjustment unit 30 changes the set value of the crusher 12 based on the calculated set value. The crusher 12 has a fixed part and a movable part liner, and the gap between the fixed part and the movable part liner is the set value. The set can be adjusted, for example, by opening and closing the set using a solenoid valve provided in the hydraulic circuit. The movable part liner has a set measurement unit 16 that can detect the amount of movement, so the set adjustment unit 30 can precisely adjust the liner position by outputting a movement signal such as 1 mm. If the set value is Δxset, the fixed liner position is xf, and the movable liner position is xm, then the set value is Δxset = xm - xf. The fixed liner position xf is undetectable and changes with the amount of liner wear. As the amount of liner wear changes, the set value also changes. If the fixed liner position before wear is xf0 and the amount of liner wear is xlw, then xm - (xf0 - xlw) = Δxset (Equation A).

[0025] Figure 3 is a processing flow diagram of the set adjustment control unit. (Before operation begins) (S200) The set value measured by the set measurement unit 16 is acquired before the crusher 12 is started (while it is stopped). (S201) Obtain the previous operating data (current value, power value, operating time). (S202) Calculate the wear rate from the current measured values ​​(set value, previous operating data) and compare it with the previous value. The formula for calculating the wear rate is Wear rate = Δmm / (kW × t), where Δmm is the amount of wear, kW is the machine power (electrical value, current value), and t is the operating time. The original value is the wear rate calculated in the previous calculation. Compare the previous calculated value with the current calculated value. If the difference is small, use the previous set value; if the difference is large, recalculate the crushability and set value.

[0026] (S203) The crushability is recalculated and the set value is calculated. The method for recalculating the crushability is to calculate the set value from the current particle size distribution, as shown in (S107). A simulation is performed to predict the product particle size using the particle size of the raw material, the crushability (ease of breaking of the raw material), and the set value as input values. Since there is a correlation between the crushability (ease of breaking of the raw material) and the wear rate (wear of the liner), the coefficient of the crushability (ease of breaking of the raw material) is recalculated from the wear rate calculated in (S202). The set value is calculated using the simulation shown in (S107) with the calculated crushability. In other words, the set value can be obtained from the product particle size measured by reverse calculation. The difference between the obtained set value and the current set value is the amount of liner wear. (S204) Use the previous set value (most recent before operation).

[0027] (start) (S205) The central control unit 40 obtains set values ​​and target setting values ​​for product particle size based on the production plan. (S206) Determine whether there has been a change in the data target value. If NO, start crushing. (S207) The set value is transferred (output) to the set adjustment unit 30, and the crusher's set adjustment is performed. The crushing operation of the crusher 12 is started. (S208) Particle size distribution data is obtained from the particle size distribution acquisition unit 22. (S209) An estimated wear amount is obtained from the liner wear estimation unit 26. (S210) The set value is calculated. The actual set value changes during operation depending on the amount of liner wear. If the amount of liner wear is known, the optimal amount of liner movement of the movable part can be determined from equation A, and the optimal set value: Δxset can be maintained. (S211) The set value is transferred (output) as data to the set adjustment unit 30.

[0028] [Method for controlling the operation of a crusher] The operation control method for the crusher of the present invention, based on the above configuration, will be described below. The set measurement unit 16 measures the set value of the crusher 12 before it starts operation (while it is stopped). The crushing operation of the crusher 12 is started. Based on the crusher's operating data (power value, current value, operating time), the particle size distribution from the particle size distribution acquisition unit 22, and the level value from the level meter 14, the liner wear estimation unit 26 acquires an estimated wear amount. Based on the wear amount estimate from the liner wear estimation unit 26 and the particle size distribution from the particle size distribution acquisition unit 22, the set adjustment control unit 28 calculates the set value. The set value of the crusher is changed in the set adjustment unit 30 using the calculated set value. According to this invention, while the set value was conventionally changed manually, by calculating an estimated amount of liner wear, the set value can be automatically controlled without human intervention, thereby significantly improving capacity and production volume.

[0029] [Operation control system for crushing plant] Figure 4 is an explanatory diagram of the operation control device of the crushing plant. As shown in the figure, the crushing plant 100 is equipped with primary to tertiary crushers 12A, 12B, and 12C. For example, when the material to be crushed is 600 mm to 700 mm in size, the crushing plant crushes it to a particle size of 100 mm to 300 mm in the primary crusher 12A, to a particle size of 38 mm in the secondary crusher 12B, and to a particle size of 13.9 mm in the tertiary crusher 12C. After sieving, it ultimately produces crushed stone with a particle size of 20 mm to 13 mm, crushed stone with a particle size of 13 mm to 5 mm, crushed stone with a particle size of 5 mm to 2.5 mm, and crushed sand with a particle size of 2.5 mm or less. The primary to tertiary crushers 12A, 12B, and 12C are individually equipped with the measurement and control means shown in Figure 1. The central control unit 40 is electrically connected to the control means (32A, 32B, 32C) of each crusher (12A, 12B, 12C), which include the quantitative control unit 24, the set adjustment control unit 28, the liner wear estimation unit 26, the particle size distribution acquisition unit 22, and the crusher's operating data (power value, current value, operating time).

[0030] [Operation control method for crushing plants] Figure 5 is a processing flow diagram of the operation control method for the crushing plant. (S300) The liner wear estimation unit 26 of each crusher (12A, 12B, 12C) acquires the estimated amount of liner wear, particle size distribution, and operating data (power value, current value, operating time) for each crusher (12A, 12B, 12C). (S301) Obtain production item data for the production plan. (S302) Obtain inventory data for each granularity in the stockyard. (S303) Calculate the required product granularity until shipment from production item data (shipment data) and inventory data for each granularity. This granularity will be the final product granularity. In addition, calculate the operating time until shipment from the shipment data and inventory data. (S304) The liner life coefficient for each crusher (12A, 12B, 12C) is calculated. The central control unit 40 uses the wear rate calculated in (S202) from the data acquired from each crusher to obtain the operating time from (S303) until shipment and calculates the amount of liner wear. Liner wear can be calculated as: wear rate × operating time × required power. The liner life coefficient is calculated from the liner width at the limit of use, the liner width of a new liner, and the current amount of liner wear. The coefficient at which the liner becomes unusable is set to 1.0: lifespan, and the liner life coefficient is calculated as: liner life coefficient = (new liner width - liner wear) / liner width at the limit of use. (S305) Determine whether the liner life coefficient of each crusher (12A, 12B, 12C) is within the specified value.

[0031] (S306) If the answer is YES in S305, calculate the crushing ratio for each crusher (12A, 12B, 12C) using the machine parameters. From the final product particle size, use the simulation shown in (S107) to simulate each combination of crushing ratio, product particle size, and raw material particle size to determine each set value. (S307) If NO is found in S305, the crushing ratio of each crusher (12A, 12B, 12C) is changed so that the liner life coefficient of each crusher is less than or equal to the specified value: 1.1. For crushers with a small liner life coefficient: large liner wear, the crushing ratio is reduced, and the crushing ratio of the other crushers is adjusted to calculate the crushing ratio of each crusher that will yield the desired product particle size.

[0032] As an example, the crushing ratios for typical primary to tertiary crushers, the average crushing ratio, and representative product sizes are set as shown in Table 1 (the following shows the case where 600mm raw material is input). [Table 1] When the liner is relatively new, it is not worn down, so the crushing ratio can be precisely specified by setting the set value.

[0033] Table 2 shows the case where the liner of the primary crusher is worn. [Table 2] As the liner wears down, the set value increases, resulting in a smaller crushing ratio and decreased crushing efficiency. The wear condition and wear rate of the liners of all crushers in a crushing plant differ, and the wear condition of the liners of each crusher varies from time to time. In Table 2, for example, the liner of the primary crusher was worn, causing the set spacing to widen. As a result, the actual crushing ratio fell below the lower limit of 4, which is the typical crushing ratio of 4-5, to 3.5. At this time, the typical product size of the tertiary crusher became very large, ranging from 13.9 to 17.8 mm, which reduced the overall crushing efficiency of the crushing plant.

[0034] Table 3 shows the results when the set values ​​of the secondary and tertiary crushers are adjusted. [Table 3] Table 3 shows the results of adjusting the set values ​​of the secondary and tertiary crushers, applying a load to the crushers to maximize the crushing ratio, and compensating for the primary crusher's output with the secondary and tertiary crushers. As a result, the representative product size of the tertiary crusher has recovered to the initial setting of 13.9 mm. While conventional methods involve adjusting the operation of each crusher by monitoring its particle size, power, and crushing ratio, this invention allows for automatic operation control that optimizes the overall plant (three or more crushers) by monitoring the wear status of the liners, settings, power, and crushing chamber level of each crusher, and then applying set values ​​to each crusher. (S308) The crushing ratio of each crusher (12A, 12B, 12C) and the particle size before and after each crusher (12A, 12B, 12C) are simulated to calculate the set value, product particle size, and speed setting value (feeder speed) for each crusher (12A, 12B, 12C). The simulation device shown in S107 is used to calculate the set value, product particle size, and speed setting value (feeder speed) for each crusher (12A, 12B, 12C). (S309) The calculation results from S308 (set value, product particle size, speed setting value (feeder speed)) are output as command values ​​to each crusher (12A, 12B, 12C).

[0035] [Differentiation] Figure 6 is an explanatory diagram of a modified operating control device for a crushing plant. As shown in the figure, the operating control device for the modified crushing plant has a sizing machine 50 installed downstream of the discharge feeder 13 of the tertiary crusher 12C. The other configurations are the same as those of the operating control device for a crushing plant shown in Figure 4, and show the same effects and functions. The sizing machine 50 removes the sharp corners of the crushed material crushed by the tertiary crusher, making the crushed material round. The sizing machine can adjust the particle size distribution by controlling the rotation speed of the rotor. Therefore, similar to the crusher, the sizing machine 50 can also be configured to automatically control the rotation speed of the rotor by inputting the particle size distribution of the crushed material discharged from the sizing machine and operating data to the central control unit 40. This makes it possible to automatically control the operation of the operating control device for a crushing plant that combines a crusher and a sizing machine. Alternatively, instead of installing the sizing machine 50 downstream of the discharge feeder 13, the tertiary crusher 12C may be configured as the sizing machine 50.

[0036] According to this invention, while in the past the set values ​​of each crusher had to be changed individually by hand, it is now possible to control all crushers in the crushing plant collectively, taking into account the overall balance of each crusher, thereby establishing optimal plant operation (reduced inventory, increased production capacity, and extended durability / lifespan). The crusher operation control device of the present invention can be linked with the production planning system of a crushing plant. The production planning system consists of an order receiving process (receiving orders online without manual intervention), a production planning process (automatically creating a production plan from inventory levels and order levels, and planning personnel allocation), a product stocking process (continuing operation at optimal production efficiency according to the production plan in conjunction with the operation control device. Automatically changing the crusher's set values ​​according to the product or liner wear status. Optimal crusher operation is carried out not individually, but in coordination with multiple (primary to tertiary) crushers), a product shipping process (automatically managing truck entry and exit, pickup, loading volume, and shipping), an invoice issuance process (automatically issuing invoices to customers after shipping confirmation), and a collection process (online payment management. For customers with outstanding payments, reminders are sent via email, etc., and an outstanding payment list is created and distributed to relevant parties). The crusher operation control device linked with the production planning system can feed back production volume data for each classified crushed material (aggregate) to the production planning system. The central control unit can provide feedback to the production planning system regarding the operating status of each crusher and the wear status of the liners.

[0037] The production planning system may automatically generate a production plan for the crushing plant by comparing the ordered aggregate quantity with the inventory quantity of aggregate. The production planning system may also automatically acquire pre-approved employee leave schedules, maintenance schedules for each crusher, and weekly weather forecasts to create the production plan. Furthermore, the production planning system may record electricity cost data and include a function to automatically operate each crusher in the crushing plant by selecting nighttime operation to minimize electricity costs. In a production planning system, the created production plan may be viewable from mobile devices, and if there are any sudden changes to the production plan, the relevant parties may be automatically notified of the changes. Furthermore, the production planning system may automatically share operating data of the crushing plant with partner companies. The production planning system may estimate the replacement timing of consumables such as liners for each crusher based on the operating data of the crushing plant, and automatically place orders for the relevant parts so that they can be delivered at an appropriate time. Furthermore, in the production planning system, means for automatically measuring and recording inventory levels may be used in the product stockyard.

[0038] In a production planning system, aggregates may be automatically retrieved from the stockyard when products are shipped, and the specified quantity of aggregates may be automatically loaded onto pre-registered delivery vehicles such as trucks. Alternatively, image recognition may be used to automatically read the license plate number of the truck performing the loading operation during shipment, and this license plate data may be linked when distributing shipment certificates and invoices to customers. The production planning system may automatically check for payments on the specified date, send reminder emails if payment is not received, and automatically link payment data to cash flow. Preferred embodiments of the present invention have been described above. However, the present invention is not limited in any way to the above embodiments, and various modifications are possible without departing from the spirit of the invention. Furthermore, the present invention is not limited to the combinations shown in the embodiments, but can be implemented using various combinations. [Explanation of symbols]

[0039] 10. Operation control device for the crusher 11. Input feeder 12. Crusher 12A Primary Crusher 12B Secondary Crusher 12C 3rd generation crusher 13 Discharge feeder 14 Level Gauge 16 Set Measurement Sections 18 Cameras 20 Particle size distribution measuring section 22 Particle size distribution acquisition section 24 Quantitative Control Unit 26 Liner wear estimation section 28 Set Adjustment Control Unit 30 Set Adjustment Section 32 Control means 32A Primary crusher control means 32B Secondary crusher control means 32C Third-stage crusher control means 40 Central Control Unit 50 Graining machine

Claims

1. A level meter that measures the level of the crushed raw material fed into the crusher, A particle size distribution measuring unit for measuring the particle size distribution of the crushed material discharged from the crusher, A set measuring unit that measures the set value which is the minimum gap formed between the movable and fixed parts of the liner of the crusher, A crusher operation control device comprising a liner wear estimation unit that calculates an estimated amount of liner wear based on the power value and operating time of the crusher's drive motor and the level value, calculates a set value from the current particle size distribution, compares the measured set value with the calculated set value, and updates the estimated amount of wear when the difference is large and the change in the particle size distribution is greater than the target value.

2. A control device for operating a crusher according to claim 1, An operation control device for a crusher, characterized by comprising a set adjustment control unit that calculates a set value based on the wear amount estimate of the liner wear estimation unit and the particle size distribution of the particle size distribution measurement unit.

3. A control device for operating a crusher according to claim 2, A crusher operation control device characterized by comprising a central control unit that calculates individual liner life coefficients for multiple crushers from the wear amount estimates of the liner wear estimation units provided in each of the multiple crushers, calculates or changes the crushing ratio of the crushers based on the liner life coefficients, and calculates the set values, product particle size, and speed setting values ​​for the multiple crushers by simulating based on the obtained crushing ratio and the particle size distribution of each crusher.

4. A control device for operating a crusher according to claim 3, A crusher operation control device characterized in that it has a granulation machine downstream of the crusher, and the central control unit calculates the rotation speed based on the particle size distribution of the crushed material discharged from the granulation machine.

5. A method for controlling the operation of a crusher, in which a computer controls the operation of the crusher, The computer performs the steps of obtaining the level value of the crushing material fed into the crusher, the particle size distribution of the crushed material discharged from the crusher, and the set value of the minimum gap formed between the movable and fixed parts of the crusher's liner. A crusher operation control method characterized by comprising the steps of: calculating an estimated wear amount of the liner based on the power value and operating time of the crusher's drive motor and the level value; calculating a set value from the current particle size distribution; comparing the measured set value with the calculated set value; and updating the estimated wear amount when the difference is large and the change in the particle size distribution is greater than the target value.

6. A method for controlling the operation of a crusher according to claim 5, A method for controlling the operation of a crusher, characterized by having a step of calculating a set value based on the estimated wear amount and the particle size distribution.

7. A method for controlling the operation of a crusher according to claim 6, A crusher operation control method characterized by comprising the steps of: calculating individual liner life coefficients for multiple crushers from the wear amount estimates of liner wear estimation units provided for each of the multiple crushers; calculating or changing the crushing ratio of the crushers based on the liner life coefficients; and calculating set values ​​and speed setting values ​​for the multiple crushers by simulating based on the obtained crushing ratios and the particle size distribution of each crusher.

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