JP2002011361A - Crushing control device for cone crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crushing control device which produces roundish crushed stones even when the quantity of supplied rocks is small and is free from the interruption of a rock crushing operation due to the overflow of the crushed stones. SOLUTION: In the crushing control device for a cone crusher which is driven by an actuator and crushes an object to be crushed, a height detector is added which detects the height of the object to be crushed accumulated in the cone crusher, and a controller is also provided which decreases the rotary speed of the actuator when the height of the object to be crushed detected by the height detector is smaller than a first specified height and stops or decreases the supply of the object to be crushed or the crushed object from a supply device when the height of the object to be crushed is larger than a second specified height.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a crush control device.

[0002]

2. Description of the Related Art In many cases, crushed stone used as aggregate for roads or construction is produced by transporting large rocks collected from a face to a crushing stone factory and crushing the crushed stone at the crushing stone factory to have a predetermined particle size. However, recently, in order to improve production efficiency, a method of manufacturing a predetermined aggregate with a face using a mobile crusher equipped with a crusher without transporting large rocks to a crusher factory has been adopted. . FIG.
Fig. 1 shows a conceptual diagram of a crushing system using a mobile crusher. The crushing operation system includes a primary crusher 1 and a secondary crusher 2. Primary crusher 1
Is a jaw crusher for supplying the secondary crusher 2 to be the final product by roughly crushing the stone collected by the face. Further, when the rock collected by the face is close to the size after the rough crushing, the device for supplying the rock to the secondary crusher 2 has one
In some cases, an excavator or a wheel loader may be used instead of the next crusher 1.

[0003] The secondary crusher 2 has a supply conveyor 6, a vibrating screen 7, a cone crusher 8, a return conveyor 9 and a discharge conveyor 10. Stone supplied from the primary crusher 1 is vibrated by the supply conveyer 6. 7. A vibrating screen 7 having a vibrating sieve disposed at an upper portion of a front portion of the vehicle is supported by a body frame via a spring, and vibrates rearward and upward. The vibrating screen 7 includes a sieve having a large number of holes having a size corresponding to the particle size of the aggregate to be a product, and satisfies the product particle size when the stone passes over the sieve while vibrating. Only the stone falls on the discharge conveyor 10 as a crushed material. On the other hand, a 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 to the vibrating screen 7 again by the supply conveyor 6, and the selection of the particle size is repeated to produce an aggregate having a predetermined particle size as a final product. Recently, there is a demand for a road or a building having a large strength, and a rounded stone having higher strength than a square shape is often used, and not only the particle size but also the shape of the stone is an important factor. ing. The rounded shape is obtained by inter-particle crushing in which a large number of rocks are compacted and multi-directional force acts to crush the stones. The crusher that enables this inter-particle crushing is a cone crusher 8. It is.

FIG. 9 shows a 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.
The drive shaft 11 that rotates clockwise in the direction A by an electric motor or a hydraulic motor is engaged with the oscillator 12 by a bevel gear 18. The oscillating body 12 is eccentrically and rotatably fitted to an upper part of a main shaft 13 whose lower part is fixed to a base 13a,
When the drive shaft 11 rotates in the direction A, it rotates in the direction B. Further, the frustum-shaped mantle 14 rotates together with the rocking body 12 and rotates in the B direction when it is in an empty state in which no crushed object is contained. That is, when the oscillator 12 rotates, the mantle 14
Rotates in the direction C around the center point O1 of the cone cable 15 shown in FIG. When an 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 truncated cone-shaped 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 cable 15 is equal to the width of the mantle 1.
4 according to the swing rotation. Thus, the rocks are pressed against each other at the gap G as shown in FIG.

[0005]

The crushing method using the cone crusher 8 mounted on the mobile crushed stone vehicle described above has the following problems. The amount of stone input from the hopper 16 decreases, and the corn cave 15 and the mantle 14
When the amount of rocks and the like accumulated during the period is small, the stones are hardly condensed between the corn cave 15 and the mantle 14 and the pressing force of each other is small. There is a problem that a sloping shaped stone cannot be obtained. Also, when the amount of stone supplied to the hopper 16 is too large, the throughput of the cone crusher 8 may not be enough to cause the stone to overflow from the top of the hopper 16, thereby interrupting the operation and reducing the operation efficiency. There's a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and a rounded stone can be obtained even when a small amount of stone is supplied, and crushing without interrupting work due to overflow of the stone. It is intended to provide a control device.

[0007]

In order to achieve the above object, a first invention is a crushing control device for a cone crusher driven by an actuator to crush an object to be crushed. A height detector for detecting the height of the crushed object is provided, and when the height of the crushed object detected by the height detector is equal to or less than a first predetermined height, the rotation speed of the actuator is reduced. It has a configuration that has a controller that lowers it.

According to the first invention, when the height of the crushed object stored in the cone crusher detected by the height detector becomes equal to or less than the first predetermined height, the controller operates the crusher actuator. Since the rotation speed is reduced, the throughput of the cone crusher is reduced. As a result, the amount of crushed material discharged from the cone crusher is reduced even if the amount of crushed material input into the cone crusher is reduced, so that the amount of crushed material that can remain in the crusher and be crushed between particles is secured. A rounded crushed material is obtained. In particular, when a person operates an excavator or the like to input crushed materials at the face of a cutting face, etc., and tries to control the amount of crushed materials in the crusher, the supply amount control is complicated because the input to the crusher is intermittent. However, according to the present invention, the amount of the material to be crushed can be easily and accurately controlled.

According to a second aspect of the present invention, there is provided a cone crusher for crushing an object to be crushed, a vibrating screen for selecting the object to be crushed or the crushed object, and supplying the object to be crushed to the cone crusher; A crushing control device for a cone crusher, comprising: a crushing device that detects a height of a crushed object accumulated in the cone crusher; and a crushing device that is detected by the height detector. When the height of the object is equal to or more than the second predetermined height, the controller is configured to stop or reduce the supply from the supply device.

According to the second invention, when the height of the crushed object accumulated in the cone crusher detected by the height detector becomes equal to or higher than the second predetermined height, the controller sends a signal from the supply device. Stop or reduce the supply. Thereby, since the crushed material or the supply of the crushed material to the vibrating screen is stopped, the crushed material does not overflow from the cone crusher, and the work is not interrupted, so that the crushing efficiency can be improved.

[0011] The third invention is a cone crusher for crushing the material to be crushed, a vibrating screen for selecting the material to be crushed or the crushed material, and supplying the material to be crushed to the cone crusher; A crushing control device for a cone crusher, comprising: a crushing device that detects a height of a crushed object accumulated in the cone crusher; and a crushing device that is detected by the height detector. When the height of the object is equal to or higher than the third predetermined height, the controller has a controller that sets the vibration frequency of the vibrating screen to a frequency that is higher than the resonance frequency of the vibrating screen and does not send the crushed object to the cone crusher. .

According to the third invention, when the height of the crushed object accumulated in the cone crusher detected by the height detector becomes equal to or higher than the third predetermined height, the vibration frequency of the vibrating screen is changed. The frequency is maintained to be lower than the resonance frequency and the frequency at which the crushed object is not sent to the cone crusher. Thus, the supply of the crushed material to the cone crusher is stopped, so that the crushed material can be reliably prevented from overflowing. In addition, the vibrating screen maintains vibration at a frequency higher than its resonance point, and does not pass through the resonance point when recovering the frequency again, so there is no shock or vibration to the body frame, and each The durability of the device can be improved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. In the following figures, FIG.
The same elements as those described in FIG. 9 are denoted by the same reference numerals and described. FIG. 1 is a side view of a secondary crusher 2 according to an embodiment of the present invention, and its configuration will be described. At the lower part of the body frame 31, a moving device that moves between sites, such as the endless track traveling device 17, is attached. On the body frame 31, the supply conveyor 6, the vibrating screen 7, the cone crusher 8, the return conveyor 9, Discharge conveyor 10
And a power unit 30 and the like. A supply conveyor 6 that transports 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 a discharge unit of the supply conveyor 6. Also,
A discharge conveyor 10 is attached below the vibrating screen 7 toward the front, and a cone crusher 8 is attached to a longitudinally intermediate portion of the body frame 31. A return conveyor 9 is provided from below the cone crusher 8 to the rear of the secondary crusher 2. In addition,
A power unit 30 for driving the secondary crusher 2 is mounted on a rear portion of the 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 an end of the cone crusher 8. A screen hydraulic motor 20 as a screen actuator for vibrating the vibrating screen 7 at a screen frequency F
Are attached to the vibrating screen 7. The rotation speed of the crusher hydraulic motor 21 and the screen hydraulic motor 20 is controlled by the flow rate of oil discharged from the crusher solenoid valve 25 and the screen solenoid 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 solenoid valve 25 and the screen solenoid valve 24, and the crusher hydraulic motor 21 and the screen hydraulic motor 20 are rotated to be drained to the tank 27.

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 reflected by the ultrasonic reflection time. The distance is detected, and a stone height H based on a predetermined height is output. The stone height H is input to the controller 29, and the crusher solenoid valve 25 is input from the controller 29.
The crusher flow command Cc, the screen flow command Cs to the screen solenoid valve 24, and the supply command Cd to the feeder 32 of the primary crusher 1 are output. The crusher flow command Cc and the screen flow 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. 3 (a) and 3 (b) to obtain the drive shaft rotation speed N and the screen frequency F. In addition, supply command Cd
Is a command as to whether or not to supply the stone from the primary crusher 1 to the secondary crusher 2, which supplies the stone when it is on and stops the supply when it is off. In addition, the feeder 32 of the primary crusher 1 is instructed wirelessly, for example.

Here, the relationship between the drive shaft rotation 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 with reference to FIG. In FIG. 3, the horizontal axis represents the stone height H, and the vertical axis represents the drive shaft rotation speed N, the screen frequency F, and the supply command Cd. The drive shaft rotation speed N, the screen frequency F and the supply command Cd
Have hysteresis characteristics. FIG.
The vertical axis of (a) shows the drive shaft rotation speed N in%. When the drive shaft rotation speed N is 100% and the stone height H is lower than the first height H1, 80% is set.
After the% is set, when the height becomes higher than a predetermined second height H2 which is larger than the first height H1, a drive shaft rotation 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%, when the stone height H becomes larger than the predetermined fourth height H4, R% is set, and after the R% is set, the fourth height H4 is set.
When the height becomes lower than the third height H3, which is smaller than 100%, the screen frequency F of 100% is set. Note that R% smaller than 100% is a frequency before the rotational speed of the screen hydraulic motor 20 decreases from 100% to reach a frequency at which the vibrating screen 7 resonates, and R% from the vibrating screen 7 to the cone crusher 8. The stone is at a frequency that is not sent out.

The supply command Cd is shown on or off on the vertical axis of FIG. The supply command Cd is set to ON, and after the ON is set, when the stone height H becomes larger than the fourth height H4, OFF is set. After the OFF is set, the third height H is set.
When it becomes lower than 3, the ON supply command Cd is set.

Next, the processing flow of the controller 29 will be described with reference to FIG. In the description with reference to FIG. 4, each processing step number is represented by adding S. In step S1, it is determined whether or not the stone height H is smaller than the first height H1. If smaller, the drive shaft rotation speed N is set to 80% in step S2, and the process proceeds to step S6. Stone height H
Is greater than or equal to the first height H1, it is determined in step S3 whether or not the drive shaft rotation speed N is equal to 80%. If they are equal, the process proceeds to step S4, and if they are not equal, the process directly proceeds to step S6. In step S4,
Determine whether the stone height H is greater than the second height H2,
If it is larger, the drive shaft rotation speed N is set to 10 in step S5.
The value is set to 0% and the process proceeds to step S6. If the stone 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.
Turns on the supply command Cd and sets the screen frequency F to 1
Set each to 00%. If the stone height H is equal to or higher 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%. When it is ON and 100%, the process proceeds to step S9, and when 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 greater than the fourth height H4. If it is, 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 less than the fourth height H4, the control processing is completed.

Referring to FIG. 5, the operation and effect of this embodiment having the above-described configuration will be described. FIG. 5 shows the time t on the horizontal axis.
And the first row from the top is the primary crusher 1 to 2 on the vertical axis.
Stone supply amount V to the next crusher 2, the second stage is stone height H, 3
The stage is the drive shaft rotation speed N, and the stage is the screen frequency F.
Is shown. Until the time T1 when the stone supply amount V of 100% continues, the stone height H in the cone crusher 8 is the second height H.
The height between the second and third heights H3 is appropriate for crushing between particles, the drive shaft rotation speed N and the screen frequency F are both 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 the time T1, the stone height H of the cone crusher 8 starts to decrease from the time T2 after a delay time ΔT due to the transport time of the conveyor to the cone crusher 8. When the stone height H decreases and decreases to the first height H1 at time T3, the drive shaft rotation speed N, which was 100% so far, is set to 80% by the determination in steps S1 and S2 described with reference to FIG. You. Then, since the processing amount of the cone crusher 8 decreases, the decreasing change rate of the stone height H decreases, and the stone height H that can secure the crushing between particles can be maintained for a long time.

Assuming that the stone supply amount V starts increasing at time T4, the stone height H increases from time T5, which is a delay time ΔT later than time T4, and reaches the second height H2 at time T6. The drive shaft rotation speed N, which was 80% up to step S3, is changed to steps S3, S4, and S5 described in FIG.
It returns to 100% by the judgment of. Then, since the processing amount of the cone crusher 8 also returns to the normal time, the increasing change rate of the stone height H is smaller than the increasing change rate up to the time T6, and the 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 reduced to the steps S8, S9, and S9 described in FIG. It becomes R% by the judgment of S10. Then, since the stone does not enter the cone crusher 8 from the vibrating screen 7, the stone in the cone crusher 8 is processed, and the stone height H decreases. 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. .

When the stone height H decreases to a third height H3 at time T8, the screen frequency F and the stopped stone supply amount V, which are R%, are calculated in steps S6 and S6 described in FIG. According to the determination in step S7, both return to 100%. Since the screen frequency F becomes 100%, a normal amount of stone enters the cone crusher 8 from the vibrating screen 7, and the decreasing change rate of the stone height H becomes smaller than the decreasing change rate until time T8. Delay time Δ from time T8
At time T9 after T, the stone supply amount V comes to be conveyed again to the cone crusher 8 by the conveyor, and the stone height H is settled to a height corresponding to the stone supply amount V being conveyed. go.

As described above, when the stone height H becomes lower than the first height H1, the drive shaft rotation speed N is reduced from 100% to 80%.
When the stone height H is higher than the second height H2, the drive shaft rotation speed N is reduced from 80% to 100%.
Return to%. As a result, even if the supply amount to the cone crusher 8 is reduced, the stone is kept in the cone crusher 8 for a long time, so that the particles can be crushed by consolidation of the stone. 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 sending of the stone from the vibrating screen 7 to the cone crusher 8 is reduced to zero. Lower. 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 to the primary crusher 1 is output. Thereby, the stone does not overflow from the cone crusher 8. As a result, a rounded shape can be obtained even when the amount of the introduced stone is small, and a crushing control device can be obtained in which the overflow of the stone does not interrupt the work.

In this embodiment, as shown in FIG. 3, the drive shaft rotation speed N, the screen frequency F and the supply command Cd based on the stone height H have characteristics having hysteresis, but are controlled. Under the constraint that the stone height H does not continuously vibrate, an on / off characteristic as shown in FIG. 6 may be used. Further, the drive shaft rotation speed N and the screen frequency F may have continuous characteristics as shown in FIG. Further, in the present embodiment, when the stone height H is equal to or greater than the fourth height H4, the supply command Cd for turning off is output and only the feeder 32 is stopped to stop the supply of the crushed material. The operation of the entire primary crusher 1 may be stopped at the same time when the operation is stopped. 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 a deceleration signal is output to decelerate the feeder 32 to reduce the supply amount of the crushed material. You may make it decrease. In this embodiment, 100% used when explaining the stone supply amount V, 100% and 80% used when explaining the drive shaft rotation speed N, and used when explaining the screen frequency F. The value of 100% is an example value for easy understanding of the description, and the present invention is not limited to this value.

In the present embodiment, when the stone height H becomes higher than the fourth height H4, the screen frequency F is reduced to stop sending the stone from the vibrating screen 7 to the cone crusher 8. Although the supply of the stone from the primary crusher 1 is stopped, only one of them may be performed. That is, when the feeding of the stone from the vibrating screen 7 is stopped, the feeding to the cone crusher 8 can be stopped immediately, so that the overflow of the stone can be solved at an early stage.
In addition, 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 decreasing the screen frequency F and the stone height H for stopping the supply of the stone from the primary crusher 1 are not set to the same fourth height H4, but are set to different stone heights. 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 stone height H is equal to the fourth height H.
When the stone height H is higher than the fourth height H4, the conveyance speed of the supply conveyor 6 is set to be small or zero when the stone height H is higher than the fourth height H4. Good.

In the present embodiment, the crusher hydraulic motor 21 and the screen hydraulic motor 20 are configured such that their rotational speeds are set by the flow rates set by the crusher solenoid valve 25 and the screen solenoid valve 24.
The present embodiment is also applicable to a configuration in which each rotation speed is detected by a rotation speed detector and feedback control is performed so that the detected rotation speed becomes a set rotation speed. The present invention is also applicable to a configuration in which the flow rate detected by the crusher solenoid valve 25 and the screen solenoid valve 24 is detected by the flow rate detector, and the detected flow rate is feedback-controlled so as to be a flow rate corresponding to the set rotation speed. Embodiments are applicable. Further, in the present embodiment, the cone crusher 8 and the vibrating screen 7 are configured to be driven by a hydraulic motor, but the present embodiment is also applicable to a configuration driven by an electric motor. Further, in the present embodiment,
Although the supply command Cd is instructed wirelessly to the feeder 32 of the primary crusher 1, it may be instructed by a wire or 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 instruct the stop or decrease of the supply with a speaker or the like.

As described above, according to the present invention, the height of the upper surface of the stone in the cone crusher detected by the height detector is equal to the predetermined first value.
When the height falls below the height, the controller reduces the throughput of the cone crusher. As a result, even if the amount of stone input to the cone crusher decreases, the amount of stone discharged from the cone crusher decreases, so that the amount of stone that remains in the crusher and can be crushed between particles can be secured, and the rounded shape Stones are obtained. When the height of the stone in the cone crusher detected by the height detector exceeds the fourth height, the supply of stone to the supply conveyor is stopped or reduced, so that the stone does not overflow from the cone crusher and work The crushing efficiency is obtained because the crushing is not interrupted. Also, when the height of the stone exceeds the fourth height or the sixth height, the vibration frequency of the vibrating screen is reduced to a frequency that is higher than the resonance frequency and does not send the crushed stone to the cone crusher and is maintained. I do. As a result, the height of the stone becomes the fourth height or the sixth height.
When the height exceeds the height, the supply of the stone to the cone crusher is immediately stopped, so that it is possible to reliably prevent the stone from overflowing. Thus, a rounded stone can be obtained even when the amount of supplied stone is small, and a crushing control device without interruption of work due to overflow of the 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 of an embodiment according to 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 a temporal change in a stone supply amount, a stone height, a drive shaft rotation speed, and a screen frequency.

FIG. 6 is a diagram showing the relationship between a drive shaft rotation speed, a screen frequency, and a supply command with respect to stone height and on / off characteristics.

FIG. 7 is a diagram showing a relationship between a drive shaft rotation speed, a screen frequency, and a supply ON / OFF command, which are continuous characteristics with respect to a stone height.

FIG. 8 is an explanatory diagram of a crusher operation by the 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 ... Crawler running 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 ... high Detector 29, controller 32, feeder Cs
Screen flow command, Cc ... Crusher flow command, Cd
... Supply command, F ... Screen frequency, V ... Stone supply amount, N
... Driving shaft rotation speed, G ... Gap.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Umeda 3-20-1 Nakase, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture F-term in Komatsu Ltd. Construction Machinery 3rd Development Center 4D063 BB06 BB17 GA07 GC01 GC29 GD01 GD15 GD19 4D067 FF01 FF14 FF15 GA02 GB04

Claims (3)

[Claims] 1. A crushing control device for a cone crusher (8) driven by an actuator (21) to crush an object to be crushed, wherein a height for detecting the height of the object to be crushed accumulated in the cone crusher (8). A detector (28) is attached, and when the height of the crushed object detected by the height detector (28) is equal to or less than a first predetermined height (H1), the rotation speed of the actuator (21) is reduced. A crushing control device for a cone crusher, comprising a controller (29) for causing crushing. 2. A crusher for crushing an object to be crushed.
(8), a vibrating screen (7) for sorting the crushed material or the crushed material and supplying the crushed material to the cone crusher (8); and a supply for supplying the crushed material or the crushed material to the vibrating screen (7). A cone crusher crushing control device provided with a device (1), further comprising a height detector (28) for detecting the height of the crushed object accumulated in the cone crusher (8), wherein the height detector A cone having a controller (29) for stopping or decreasing the supply from the supply device (1) when the height of the crushed object detected in (28) is equal to or more than a second predetermined height (H4). Crusher crushing control device. 3. A crusher for crushing an object to be crushed.
(8), a vibrating screen (7) for sorting the crushed material or the crushed material and supplying the crushed material to the cone crusher (8); and a supply for supplying the crushed material or the crushed material to the vibrating screen (7). A cone crusher crushing control device provided with a device (1), further comprising a height detector (28) for detecting the height of the crushed object accumulated in the cone crusher (8), wherein the height detector When the height of the crushed object detected in (28) is equal to or higher than the third predetermined height (H6), the vibration frequency of the vibrating screen (7) is higher than the resonance frequency of the vibrating screen (7), and A crushing control device for a cone crusher, comprising a controller (29) for setting a frequency at which the vibration is not sent to the cone crusher (8).