JP4247806B2 - Cone crusher crushing control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crushing control device.
[0002]
[Prior art]
Crushed stone used as aggregate for roads or construction is often manufactured to a large particle collected from the face face to a crushed stone factory and crushed at the crushed stone factory to a predetermined particle size. Recently, however, in order to improve production efficiency, a method has been adopted in which a predetermined aggregate is produced with a face by a mobile crushed vehicle equipped with a crusher without transporting large rocks to a crushed stone factory. .
FIG. 8 shows a conceptual diagram of a crushing system using a mobile crusher. The crushing work system includes a primary crusher 1 and a secondary crusher 2. The primary crusher 1 is a jaw crusher for roughly crushing and supplying stone collected by a face to a secondary crusher 2 to be a final product. In addition, when the rock collected at the face is close to the size after rough crushing, the apparatus for supplying the rock to the secondary crusher 2 may be an excavator or a wheel loader, not the primary crusher 1.
[0003]
The secondary crusher 2 has a supply conveyor 6, a vibration screen 7, a cone crusher 8, a return conveyor 9 and a discharge conveyor 10, and stones supplied from the primary crusher 1 are placed on the vibration screen 7 by the supply conveyor 6. Be transported. A vibrating screen 7 having a vibrating screen disposed in the upper part of the front portion of the vehicle is supported by a vehicle body frame via a spring and vibrates in a rearward upward direction. The vibrating screen 7 includes a sieve having a number of holes having a size corresponding to the particle size of the aggregate to be a product, and satisfies the particle size of the product when the stone passes over the sieve while vibrating. Only stones fall to the discharge conveyor 10 as crushed material. On the other hand, stone larger than the particle size of the product is supplied to the cone crusher 8 via a shooter (not shown) as an object to be crushed, and the rock crushed by the cone crusher 8 is returned to the supply conveyor 6 by the return conveyor 9. Then, the rock is supplied again to the vibrating screen 7 by the supply conveyor 6, and the selection of the particle size is repeated to produce an aggregate having a predetermined particle size as the final product.
Recently, there has been a demand for roads or buildings with high strength, and many round stones with higher strength than square shapes are used, and not only the particle size but also the stone shape is an important factor. ing. The rounded shape is obtained by inter-particle crushing, in which a large number of rocks are consolidated and force from multiple directions is applied, and the crusher that enables this inter-particle crushing is a cone crusher 8 It is.
[0004]
FIG. 9 shows a cross-sectional view and a plan view of the cone crusher 8.
As shown in FIG. 9B, the cone crusher 8 includes a drive shaft 11, a rocking body 12, a main shaft 13, a mantle 14, a cone cave 15, and a hopper 16. A drive shaft 11 that rotates rightward in the direction A by an electric motor or a hydraulic motor meshes with a rocking body 12 by a bevel gear 18. The oscillating body 12 is eccentrically inserted into the upper portion of the main shaft 13 whose lower portion is fixed to the base 13a so as to be rotatable, and rotates in the B direction when the drive shaft 11 rotates in the A direction. Further, the truncated conical mantle 14 rotates with the rocking body 12 and rotates in the B direction in an empty state in which an object to be crushed is not contained. That is, when the oscillating body 12 rotates, the mantle 14 oscillates and rotates in the C direction around the center point O1 of the cone cave 15 shown in FIG. When the object to be crushed is contained, it rotates in the direction of arrow D. A cone cave 15 is disposed at a position facing the frustoconical surface of the mantle 14, and a gap G between the lower upper surface of the mantle 14 and the lower lower surface of the cone cave 15 corresponds to the swinging rotation of the mantle 14. It grows and gets smaller. As a result, the rocks are crushed by touching each other in the gap G as shown in FIG.
[0005]
[Problems to be solved by the invention]
The crushing method using the cone crusher 8 installed in the mobile crushed vehicle described above has the following problems.
When the amount of stones input from the hopper 16 is reduced and the amount of rocks accumulated between the corn cave 15 and the mantle 14 is small, the stones are not easily crushed between the corn cave 15 and the mantle 14 and the mutual pressure is reduced. Since the force to touch is small, there is a problem that inter-particle crushing is not performed sufficiently and a round shaped stone cannot be obtained. In addition, when the amount of stone supplied to the hopper 16 is too large, the processing amount of the cone crusher 8 may not be in time, and the stone may overflow from the top of the hopper 16, thereby interrupting the operation and reducing the work efficiency. There's a problem.
[0006]
The present invention has been made to solve the above-mentioned problem, and provides a crushing control device that can obtain a rounded stone even when the amount of supplied stone is small, and that does not interrupt work due to the overflow of stone. It is intended to provide.
[0007]
[Means, actions and effects for solving the problems]
In order to achieve the above object, the first invention is a cone crusher driven by an actuator for crushing a material to be crushed, a vibrating screen for selecting the material to be crushed or the material to be crushed and supplying the material to be crushed to the cone crusher. And a supply device for supplying the object to be crushed or the crushed object to the vibrating screen, and a height detector for detecting the height of the object to be crushed accumulated in the cone crusher is attached. When the height of the detected object to be crushed is equal to or lower than the first predetermined height, the rotational speed of the actuator is reduced, and the height of the object to be crushed detected by the height detector is higher than the first predetermined height. It has a configuration having a controller Ru stopping or reducing the supply from the supply unit when the second or more predetermined height.
[0008]
According to the first invention, when the height of the object to be crushed in the cone crusher detected by the height detector becomes equal to or lower than the first predetermined height, the controller controls the rotation speed of the crusher actuator. As a result, the throughput of corn crusher is reduced. This reduces the amount of crushed material discharged from the corn crusher even if the amount of crushed material in the corn crusher is reduced, so that the crushed material stays in the crusher and the amount of crushed material that can be crushed between particles is secured. And a rounded crushed material is obtained. In particular, when a person operates an excavator or the like at the face of the work face to input the material to be crushed, the control of the supply amount is complicated because the material is intermittently supplied to the crusher when trying to control the amount of the material to be crushed in the crusher. However, according to the present invention, the amount of the object to be crushed can be controlled easily and accurately.
[0010]
According to the first invention, when the height of the object to be crushed accumulated in the cone crusher detected by the height detector becomes equal to or higher than the second predetermined height, the controller supplies the supply from the supply device. Stop or decrease. Thereby, the supply of the object to be crushed or the crushed object to the vibrating screen is stopped, so that the object to be crushed does not overflow from the cone crusher, and the operation is not interrupted, so that the crushing efficiency can be improved.
[0011]
According to a second aspect of the present invention, when the height of the object to be crushed detected by the height detector in the first aspect is equal to or higher than a second predetermined height , the frequency of the vibrating screen is greater than the resonance frequency of the vibrating screen and It has the structure which has a controller which sets to the frequency which does not send a crushed material to a cone crusher.
[0012]
According to the second invention, when the height of the object to be crushed accumulated in the cone crusher detected by the height detector becomes equal to or higher than the second predetermined height, the vibration frequency of the vibrating screen is set to its resonance frequency. The frequency is maintained at a frequency that is larger than that of the crushed material and is not sent to the cone crusher. Thereby, since supply of the material to be crushed to the cone crusher is stopped, it is possible to reliably prevent the material to be crushed from overflowing. Furthermore, the vibration screen maintains vibration at a frequency greater than its resonance point, and when the frequency is restored again, it does not pass through the resonance point, so there is no impact / vibration on the vehicle body frame. The durability of the apparatus can be improved.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments according to the present invention will be described below with reference to the drawings. In the following drawings, the same elements as those described in FIGS. 8 and 9 are denoted by the same reference numerals.
FIG. 1 shows a side view of a secondary crusher 2 according to an embodiment of the present invention, and its configuration will be described.
A moving device that moves between sites, such as an endless track traveling device 17, is attached to the lower part of the vehicle body frame 31. On the vehicle body frame 31, a supply conveyor 6, a vibrating screen 7, a cone crusher 8, a return conveyor 9, The discharge conveyor 10 and the power unit 30 are attached. A supply conveyor 6 for conveying stones from the lower rear to the upper front is disposed in the longitudinal direction of the secondary crusher 2, and a vibrating screen 7 is provided below the discharge portion of the supply conveyor 6. A discharge conveyor 10 is attached to the lower side of the vibrating screen 7, and a cone crusher 8 is attached to the middle portion of the body frame 31 in the longitudinal direction. A return conveyor 9 is provided from below the cone crusher 8 toward the rear of the secondary crusher 2. A power unit 30 for driving the secondary crusher 2 is mounted on the rear portion of the vehicle body frame 31.
FIG. 2 shows a control block diagram of the embodiment according to the present invention.
A crusher hydraulic motor 21 as a crusher actuator for rotating the drive shaft 11 of the cone crusher 8 is attached to the end of the cone crusher 8. A screen hydraulic motor 20 as a screen actuator that vibrates the vibrating screen 7 at a screen frequency F is attached to the vibrating screen 7. The rotation speeds of the crusher hydraulic motor 21 and the screen hydraulic motor 20 are controlled by the flow rates of oil discharged from the crusher electromagnetic valve 25 and the screen electromagnetic valve 24 via the crusher pipe 23 and the screen pipe 22, respectively. The pressure oil discharged from the hydraulic pump 26 is sent to the crusher electromagnetic valve 25 and the screen electromagnetic valve 24, and is drained to the tank 27 by rotating the crusher hydraulic motor 21 and the screen hydraulic motor 20.
[0014]
As a detector, a height detector 28 for measuring the stone height H of the upper surface of the stone accumulated in the cone crusher 8 is disposed above the inlet of the cone crusher 8. The height detector 28 uses, for example, ultrasonic waves. Ultrasonic waves are emitted toward the upper surface of the stone in the cone crusher 8, and the height detector 28 and the upper surface of the stone are separated by the reflection time of the ultrasonic waves. The distance is detected, and the stone height H based on the predetermined height is output.
A stone height H is input to the controller 29. From the controller 29, a crusher flow rate command Cc is supplied to the crusher solenoid valve 25, a screen flow rate command Cs is sent to the screen solenoid valve 24, and a supply command Cd is sent to the feeder 32 of the primary crusher 1. It is output. The crusher flow rate command Cc and the screen flow rate command Cs are command current values for setting flow rates controlled by the crusher solenoid valve 25 and the screen solenoid valve 24, respectively, and are based on the stone height H detected by the height detector 28. Thus, the drive shaft rotation speed N and the screen frequency F as shown in FIGS. 3A and 3B are obtained. The supply command Cd is a command as to whether or not stone is supplied from the primary crusher 1 to the secondary crusher 2. The supply command Cd is supplied when turned on and stopped when turned off. For example, the feeder 32 of the primary crusher 1 is instructed wirelessly.
[0015]
Here, with reference to FIG. 3, the relationship among the driving shaft rotational speed N, the screen frequency F, and the supply command Cd with respect to the stone height H detected by the height detector 28 will be described. In FIG. 3, the horizontal axis represents the stone height H, and the vertical axis represents the drive shaft rotational speed N, the screen frequency F, and the supply command Cd. The drive shaft rotational speed N, the screen frequency F, and the supply command Cd each have hysteresis characteristics.
The vertical axis of FIG. 3A shows the drive shaft rotational speed N in%. When the drive shaft rotational speed N is 100%, 80% is set when the stone height H is lower than the predetermined first height H1, and after the setting of 80%, the predetermined height is greater than the first height H1. When it becomes higher than the second height H2, the drive shaft rotational speed N of 100% is set.
The vertical axis of FIG. 3B shows the screen frequency F in%. When the screen frequency F is 100%, R% is set when the stone height H is larger than the predetermined fourth height H4, and after the R% is set, the predetermined value is smaller than the fourth height H4. When it becomes lower than the third height H3, a screen frequency F of 100% is set. R% smaller than 100% is a frequency before the rotational speed of the screen hydraulic motor 20 decreases from 100% and reaches the frequency at which the vibration screen 7 resonates, and the cone screen 8 This is the frequency at which stones are not sent out.
[0016]
The supply command Cd is indicated on or off on the vertical axis of FIG. After the supply command Cd is set to ON and the stone height H becomes larger than the fourth height H4 after the ON is set, it is set to OFF, and after the OFF is set, it is lower than the third height H3. When this happens, an ON supply command Cd is set.
[0017]
Next, the processing flow by the controller 29 will be described with reference to FIG. In the description with reference to FIG. 4, each processing step number is denoted by S.
In step S1, it is determined whether or not the stone height H is smaller than the first height H1, and if it is smaller, the drive shaft rotational speed N is set to 80% in step S2, and the process proceeds to step S6. When the stone height H is equal to or higher than the first height H1, it is determined in step S3 whether or not the drive shaft rotational speed N is equal to 80%. If equal, the process proceeds to step S4, and if not equal, the process directly proceeds to step S6. Move on.
In step S4, it is determined whether or not the stone height H is greater than the second height H2, and if so, the drive shaft rotational speed N is set to 100% in step S5, and the process proceeds to step S6. When the height H is equal to or less than the second height H2, the process directly proceeds to step S6.
In step S6, it is determined whether or not the stone height H is smaller than the third height H3. If the stone height H is smaller, the supply command Cd is turned on and the screen frequency F is set to 100% in step S7. When the stone height H is equal to or greater than the third height H3, it is determined in step S8 whether the supply command Cd is on and the screen frequency F is 100%. If it is on and 100%, the process proceeds to step S9. If it is not on and not 100%, the control process is completed.
In step S9, it is determined whether or not the stone height H is larger than the fourth height H4. If it is larger, the supply command Cd is turned off and the screen frequency F is set to R% in step S10. When the stone height H is equal to or lower than the fourth height H4, the control process is completed.
[0018]
With reference to FIG. 5, the operation and effect of the present embodiment having the above-described configuration will be described. In FIG. 5, the horizontal axis indicates time t, and on the vertical axis, the first stage from the top is the stone supply amount V from the primary crusher 1 to the secondary crusher 2, the second stage is the stone height H, and the third stage is the drive shaft. The rotational speed N and the fourth stage indicate the screen frequency F.
Until time T1, when the stone supply amount V is 100%, the stone height H in the cone crusher 8 is an appropriate height for inter-particle crushing between the second height H2 and the third height H3. Yes, both the drive shaft rotation speed N and the screen frequency F are set to 100%, and the stone continues to crush between particles. When the stone supply amount V from the primary crusher 1 starts to decrease at time T1, the stone height H of the cone crusher 8 starts to decrease from time T2 after the delay time ΔT due to the conveyor transport time to the cone crusher 8.
When the stone height H is reduced and the first height H1 is lowered at time T3, the driving shaft rotational speed N, which has been 100% so far, is set to 80% by the determination of step S1 and step S2 described in FIG. The Then, since the processing amount of the cone crusher 8 is reduced, the decrease change rate of the stone height H becomes small, and the stone height H that can secure interparticle crushing can be maintained for a long time.
[0019]
If the stone supply amount V starts to increase at the time T4, the stone height H becomes higher from the time T5 after the delay time ΔT than the time T4. When the stone height H reaches the second height H2 at the time T6, 80% so far. The drive shaft rotational speed N which has been returned to 100% by the determination in step S3, step S4 and step S5 described in FIG. Then, since the processing amount of the cone crusher 8 also returns to the normal time, the increase change rate of the stone height H becomes smaller than the increase change rate up to the time T6, and is an intermediate height between the second height H2 and the third height H3. Approaching.
When the stone supply amount V continues to increase and the stone height H reaches the fourth height H4 at time T7, the screen frequency F, which has been 100% so far, is changed to the steps S8, S9, and steps described in FIG. It becomes R% by judgment of S10. Then, since no stone enters the cone crusher 8 from the vibrating screen 7, the stone in the cone crusher 8 is processed and the stone height H is lowered. Further, at time T7, an off supply command Cd for stopping the stone supply amount V from the primary crusher 1 is output to the primary crusher 1, and the stone supply amount V from the primary crusher 1 to the secondary crusher 2 becomes zero. .
[0020]
When the stone height H is reduced to the third height H3 at time T8, the screen frequency F and the stopped stone supply amount V, which were R%, are obtained in steps S6 and S7 described in FIG. Both return to 100% by judgment. Since the screen frequency F becomes 100%, a normal amount of stone enters the cone crusher 8 from the vibration screen 7, and the decreasing change rate of the stone height H becomes smaller than the decreasing change rate up to time T8.
At time T9 after a delay time ΔT from time T8, the stone supply amount V is again conveyed to the cone crusher 8 by the conveyor, so that the stone height H depends on the conveyed stone supply amount V. It will settle down to the height.
[0021]
Thus, when the stone height H becomes lower than the first height H1, the drive shaft rotational speed N is reduced from 100% to 80% to reduce the processing amount of the cone crusher 8 and the reduction speed of the stone height H. When the stone height H becomes higher than the second height H2, the drive shaft rotational speed N is returned from 80% to 100%. Thereby, even if the supply amount to the corn crusher 8 decreases, the stone is retained in the corn crusher 8 for a long time, and the interparticle crushing by the stone mash is possible.
Further, when the stone height H becomes higher than the fourth height H4, the screen frequency F is reduced from 100% to R%, and the stone feed from the vibrating screen 7 to the cone crusher 8 is made zero, thereby increasing the stone height H. Reduce. When the stone height H becomes lower than the third height H3, the screen frequency F, which was R%, is returned to 100%, and an ON supply command Cd is output to the primary crusher 1. This prevents stones from overflowing from the cone crusher 8.
As a result, a rounded shape can be obtained even when the amount of stones to be introduced is small, and a crushing control device can be obtained in which stones do not overflow and work is not interrupted.
[0022]
In the present embodiment, as shown in FIG. 3, the drive shaft rotational speed N, the screen frequency F, and the supply command Cd based on the stone height H have hysteresis characteristics, but the controlled stone height On / off characteristics as shown in FIG. 6 may be used under the constraint that H does not vibrate continuously. Further, the drive shaft rotation speed N and the screen frequency F may have continuous characteristics as shown in FIG.
In the present embodiment, when the stone height H is equal to or higher than the fourth height H4, the supply command Cd of OFF is output and only the feeder 32 is stopped to stop the supply of the object to be crushed. At the same time, the operation of the entire primary crusher 1 may be stopped. Further, when the stone height H is equal to or higher than the fourth height H4, the feeder 32 is not stopped by outputting an off signal, but the feeder 32 is decelerated by outputting a deceleration signal to reduce the supply amount of the object to be crushed. You may make it reduce.
Further, in this embodiment, 100% used when explaining the stone supply amount V, 100% and 80% used when explaining the drive shaft rotational speed N, and used when explaining the screen frequency F. The value of 100% is given as an example for easy understanding of the explanation, and the present invention is not limited to this value.
[0023]
Further, in the present embodiment, when the stone height H becomes higher than the fourth height H4, the screen frequency F is decreased to stop the sending of the stone from the vibrating screen 7 to the cone crusher 8, and The supply of stone from the primary crusher 1 is stopped, but only one of them may be performed. That is, when stopping the sending of stones from the vibrating screen 7, the charging into the cone crusher 8 can be stopped immediately, so that the overflow of stones can be solved at an early stage. Further, when the supply from the primary crusher 1 is stopped, the supply amount can be adjusted without applying an excessive load to the vibrating screen 7, and the entire system including the primary crusher 1 and the secondary crusher 2 can be adjusted. Easy to manage.
Also, the stone height H for reducing the screen frequency F and the stone height H for stopping the supply of the stone from the primary crusher 1 are set to different stone heights without setting the same fourth height H4. It may be set. For example, the screen frequency F may be set so as to decrease when the stone height H reaches a predetermined sixth height H6.
In the present embodiment, the operation of the supply conveyor 6 is continued even when the stone height H becomes higher than the fourth height H4. However, the stone height H is higher than the fourth height H4. Sometimes, the conveying speed of the supply conveyor 6 may be set low or zero.
[0024]
In the present embodiment, the crusher hydraulic motor 21 and the screen hydraulic motor 20 are configured such that the respective rotation speeds are set by the flow rates set by the crusher electromagnetic valve 25 and the screen electromagnetic valve 24. However, the rotation speed detector The present embodiment can also be applied to a configuration in which the respective rotation speeds are detected by the feedback control so that the detected rotation speed becomes the set rotation speed. Further, the present invention is also applicable to a configuration in which the flow rate controlled by the crusher solenoid valve 25 and the screen solenoid valve 24 is detected by the flow rate detector, and feedback control is performed so that the detected flow rate becomes a flow rate corresponding to the set rotational speed. Embodiments are applicable.
In the present embodiment, the cone crusher 8 and the vibrating screen 7 are driven by a hydraulic motor. However, the present embodiment can also be applied to a configuration driven by an electric motor.
Furthermore, in this embodiment, the supply command Cd is commanded wirelessly to the feeder 32 of the primary crusher 1, but it may be commanded by wire or may be commanded by a display such as a buzzer or a lamp. When the primary crusher 1 is an excavator or a wheel loader, the operator may be instructed to stop or reduce the supply with a speaker or the like.
[0025]
As described above, according to the present invention, when the upper surface height of the stone in the cone crusher detected by the height detector becomes equal to or lower than the predetermined first height, the controller reduces the processing amount of the cone crusher. As a result, even if the amount of stone input to the cone crusher is reduced, the amount of stone discharged from the cone crusher is reduced. The stone is obtained.
When the height of the stone in the cone crusher detected by the height detector exceeds the fourth height, the stone supply to the supply conveyor is stopped or reduced, so that the stone does not overflow from the cone crusher. Therefore, excellent crushing efficiency can be obtained. Also, when the stone height exceeds 4th height or 6th height, the frequency of the vibrating screen is reduced to a frequency that is higher than its resonance frequency and does not send crushed stone to the cone crusher. To do. Thereby, when the height of the stone becomes the fourth height or the sixth height or more, the supply of the stone to the cone crusher is immediately stopped, so that it is possible to reliably prevent the stone from overflowing.
As a result, even when the amount of supplied stone is small, a rounded stone can be obtained, and a crushing control device without interruption of work due to overflow of stone can be obtained.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a hardware configuration according to an embodiment of the present invention.
FIG. 2 is a control block diagram according to the embodiment of the present invention.
FIG. 3 is a diagram showing a relationship between a drive shaft rotation speed, a screen frequency, and a supply command with respect to a stone height and a hysteresis characteristic.
FIG. 4 is a control flowchart of the embodiment according to the present invention.
FIG. 5 is an explanatory diagram of temporal changes in stone supply amount, stone height, drive shaft rotation speed, and screen frequency.
FIG. 6 is a diagram illustrating the relationship between the driving shaft rotation speed, the screen frequency, and the supply command with respect to the stone height and the on / off characteristics.
FIG. 7 is a diagram illustrating a relationship between a driving shaft rotation speed, a screen frequency, and a supply on / off command with respect to stone height and continuous characteristics.
FIG. 8 is an explanatory diagram of a crusher operation by a mobile crusher.
FIG. 9 is an explanatory diagram of a cone crusher.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Primary crusher, 2 ... Secondary crusher, 4 ... Jaw crusher, 5 ... Primary conveyor, 6 ... Supply conveyor, 7 ... Vibrating screen, 8 ... Cone crusher, 9 ... Return conveyor, 10 ... Discharge conveyor, 11 ... Drive shaft, 12 ... Oscillator, 13 ... Main shaft, 14 ... Mantle, 15 ... Cone cave, 16 ... Hopper, 17 ... Endless track traveling device, 18 ... Bevel gear, 20 ... Screen hydraulic motor, 21 ... Crusher hydraulic motor, 22 ... Screen piping, 23 ... Crusher piping, 24 ... Screen solenoid valve, 25 ... Crusher solenoid valve, 26 ... Hydraulic pump, 27 ... Tank, 28 ... Height detector, 29 ... Controller, 32 ... Feeder, Cs ... Screen flow rate command, Cc ... Crusher flow rate command, Cd ... Supply command, F ... Screen frequency, V ... Stone supply amount, N ... Drive shaft rotation speed G ... gap.

Claims (2)

A cone crusher (8) driven by an actuator (21) for crushing the object to be crushed , a vibrating screen (7) for selecting the object to be crushed or crushed, and supplying the object to be crushed to the cone crusher (8) , A height detector (28) for detecting the height of the crushed object accumulated in the cone crusher (8), having a supply device (1) for supplying the crushed object or crushed object to the vibrating screen (7 ) When the height of the object to be crushed detected by the height detector (28) is equal to or lower than the first predetermined height (H1), the rotational speed of the actuator (21) is reduced to reduce the height. When the height of the object to be crushed detected by the detector (28) is equal to or higher than the second predetermined height (H4) higher than the first predetermined height (H1) , supply from the supply device (1) is stopped or reduced. crushing the controller of the cone crusher, characterized in that it comprises a controller (29) to Ru is. When the height of the object to be crushed detected by the height detector (28) is equal to or higher than the second predetermined height (H4) , the frequency of the vibrating screen (7) is set to be higher than the resonance frequency of the vibrating screen (7). 2. The cone crusher crushing control apparatus according to claim 1, further comprising a controller (29) for setting a vibration frequency that is large and does not send the object to be crushed to the cone crusher (8).

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