KR20040066001A - Crusher - Google Patents

Abstract

PURPOSE: A two-axes crushing apparatus is provided to surely detect an excessive amount of materials to be crushed on a belt conveyor by means of a detecting unit, and to increase structural reliability of such a detecting unit. CONSTITUTION: The two-axes crushing apparatus(5) comprises a detecting unit(20) adapted to detect an excessive amount of materials to be crushed on a belt conveyor(7). The detecting unit has four sensors(21,22,23,24) located lateral to the belt conveyor so as to be positioned above the belt conveyor. Additionally, a sensor may be installed at an opposite side of a discharge side of the belt conveyor.

Description

2-axis shearing crusher {CRUSHER}

The present invention relates to a biaxial shearing type crushing device having a device for detecting an overload of a belt conveyor for crushed material conveyance.

Background Art Conventionally, for example, a self-propelled crusher described in Patent Document 1 is known as a means for detecting that the crushed matter discharged from the crusher is overloaded on the belt conveyor for crushed matter conveyance. According to the above description, when the crushed material is overloaded on the discharge conveyor and the discharge is impossible, the rotating load of the hydraulic motor for the conveyor becomes large and the pressure sensor installed in the hydraulic circuit detects this, and based on the detection signal, the controller sends the crushed material to the crusher. The feeder motor to be supplied is stopped.

Further, for example, Patent Document 2 describes a detecting means in a driving method and a driving apparatus of a crusher. 9 is a side view of the self-propelled crusher disclosed in Patent Document 2, and FIG. 10 is a front sectional view of the same biaxial shearing crusher. In Fig. 9, the self-propelled crushing machine 50 has a pair of traveling bodies 52 on both the left and right sides of the vehicle body 51, and a two-axis shearing crusher having a hopper 53 near the front of the vehicle body 51. 60 is mounted, and the drive device 54 is mounted in the vicinity of the rear side. Further, below the biaxial shearing crusher 60, a belt conveyor 55 for discharging the crushed matter to the vehicle front side is provided.

In FIG. 10, a pair of rotary shafts 64 and 64 having a cutter 63 is provided in the housing 61 having the hopper 53 at the upper portion and the outlet 62 at the lower portion thereof. It is provided so that it may face the front-back direction of 51. The plurality of cutters 63 are alternately installed on the rotating shaft 64 through a plurality of collars 65, and between the adjacent cutters 63 and 63 inside the vertical plate 66 of the housing 61. The scraper 67 is provided so that it may be located at. A discharge chute 68 is provided below the discharge port 62, and the belt conveyor 55 is disposed below the discharge chute 68.

In FIG. 10, when a crushed object is introduced from the hopper 53, the crushed object is crushed by the cutter 63, and falls from the discharge port 62 onto the belt conveyor 55 and is discharged. However, in the case where the crushed object is, for example, a tatami mat or a dry grass, a straw or the like is attached to the periphery of the cutter 63 and the scraper 67 or to the discharge chute 68, as shown by a two-dot chain line. Since it cannot accumulate and drop-out sequentially, the detection means 70 which detects that the crushed thing accumulate | stored below the scraper 67 inside the vertical plate 66 of the housing 61 is provided.

In Fig. 10, the detection means 70 is provided with the light emitter 71 and the light receiver 72 facing each other at a predetermined interval in the axial direction of the rotation shaft 63, and when the debris that has accumulated the light beam is shielded, the detection signal is detected. Will print Alternatively, the limit switch 73 may be provided on the inner surface of the vertical plate 66 and the limit switch 73 may be turned ON when the movable piece 74 is pressed by the crushed object. As a result, the blockage of the crushed material under the discharge port 62 is detected.

[Patent Document 1]

Japanese Patent Laid-Open No. 7-116541 (4 pages, 9)

[Patent Document 2]

Japanese Patent Laid-Open No. 8-47651 (3rd page, 1st, 3rd degree)

However, there exist the following problems in the said structure.

In the patent document 1, when a crushed object is overloaded on a discharge conveyor, the rotating load of the conveyor motor becomes large, and a pressure sensor detects this. However, in the case of a crushed material that is light and easily entangled or clogged, such as a tatami mat or dry grass, even if overloaded, the rotational load of the conveyor motor does not increase by that much, and there is a fear of misjudgement.

Recently, in the self-propelled biaxial shearing type crusher as described in Patent Document 2, the belt conveyor 55 is discharged from the lower side of the crusher 60 to the rear of the vehicle through the lower portion of the drive device 54 for the convenience of work. . In such a case, the distance that the crushed material on the belt conveyor 55 passes in a frame is long, and there exists a possibility of being clogged during conveyance. In what is described in patent document 2, although the clogging of the crushed material below the discharge port 62 of the crusher 60 can be detected, it is not possible to detect the overload of the crushed material in the middle of conveyance by the belt conveyor 55, and the crushed material conveys It is difficult to prevent clogging with other members on the way. In addition, since the detection means is provided in the housing 61 of the shredder 60, there is a risk of being damaged by the shredding material.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the biaxial shearing crushing apparatus is provided with an overload detection means which can reliably detect an excess of crushed material during conveyance of the belt conveyor below the crusher, and has little risk of damage. The purpose is to provide.

1 is a side view of a self-propelled biaxial shearing crusher according to the present invention.

It is a side view of the biaxial shearing crushing apparatus which concerns on 1st Embodiment of this invention.

3 is a front view of FIG. 2.

4 is a configuration diagram of the overload detecting means of the first embodiment.

It is a side view of the biaxial shearing crushing apparatus which concerns on 2nd Embodiment.

6 is a front view of FIG. 5.

7 is a cross-sectional view taken along the line A-A of FIG.

8 is a configuration diagram of the overload detection means of the second embodiment.

9 is a side view of a conventional self-propelled crushing machine.

10 is a front sectional view of a biaxial shearing crusher equipped with a conventional deposit detection means.

(Explanation of symbols for the main parts of the drawing)

One … Self-propelled biaxial shearing crusher 2. Vehicle

3…. 2-axis shearing crusher 4. Hopper

5…. 2-axis shearing crusher 6. Drive

7. Belt conveyor 8. belt

10... Frame 11... shroud

12... First cross member 13... 2nd cross member

14. The other end in the longitudinal direction 15. Chute

16. Cover plate 20,20a... Overload detection means

21,22,23,24. Photoelectric switch (detection sensor) 21a, 22a, 23a, 24a... Floodlight

21b, 22b, 23b, 24b... Receiver

25…. Laser distance sensor (detection sensor) 30. controller

31. Warning lamp 32. Buzzer

33. monitor

In order to achieve the above object, the first invention is a biaxial shearing crushing device, the frame; A biaxial shearing crusher mounted on the frame; A belt conveyor installed below the biaxial shearing crusher and conveying the crushed crushed material; And overload detection means for detecting excess debris loaded on the belt conveyor. The overload detection means is configured to directly detect excess debris loaded on the belt conveyor.

According to the first invention, since excess debris loaded on the belt conveyor can be detected directly, for example, tatami mat, dry grass, etc., compared to indirectly determining that the load is excessive by measuring the load pressure of the driving hydraulic motor. Although it is light and there is little load change, even if it is an overload, even if it is an over-loaded crushed object, it can reliably detect it, can respond to various crushed objects, and can improve versatility. In addition, since the amount of the crushed object can be reliably detected in advance so that the crushed object overloaded during conveyance by the belt conveyor does not become clogged between the vehicle body and the like, there is no operation stop due to the blockage and the workability can be improved.

In 2nd invention, in 1st invention, the detection sensor which the said overload detection means has is the structure provided in the position above the predetermined height above the said belt conveyor by the side of the flow of the said belt conveyor.

According to the second invention, it is possible to detect whether or not the height of the crushed matter loaded on the belt conveyor exceeds a predetermined height from the side of the flow of the belt conveyor so that the overload is detected and the speed is controlled before the load is blocked by contacting the vehicle body or the like during transportation. Or it can cope with a stop etc. and can improve work efficiency.

In 3rd invention, 1st or 2nd invention WHEREIN: The detection sensor which the said overload detection means has is comprised in several places.

According to the third aspect of the present invention, by monitoring a plurality of locations that are likely to be clogged during the conveyance of the belt conveyor, even when the conveyance distance covered by the side is long, a blocked location can be specified, and clogging prevention can be effectively performed.

4th invention is 1st invention WHEREIN: The detection sensor which the said overload detection means has is the structure provided in the longitudinal direction of the said belt conveyor.

According to the fourth aspect of the invention, as an overload detection means, for example, by providing a laser distance sensor or the like, it is possible to monitor by one overload detection means, thereby simplifying the structure and reducing the cost.

EMBODIMENT OF THE INVENTION Below, embodiment of the biaxial shearing crushing apparatus which concerns on this invention is described in detail with reference to drawings.

1 is a side view of a self-propelled biaxial shearing crusher 1 equipped with a biaxial shearing crusher 3 according to the present invention. In FIG. 1, the self-propelled biaxial shearing crusher 1 includes a pair of left and right traveling bodies 2 below the vehicle body frame 10, and an upper portion of the vehicle frame 10 (hereinafter, simply referred to as a frame). The biaxial shearing type crushing apparatus 3 is provided. The biaxial shearing crusher 3 includes a biaxial shearing crusher 5 having a hopper 4 mounted on one side in the longitudinal direction of the frame 10 and a drive device 6 mounted on the other side in the longitudinal direction. ). The chute 15 is provided below the biaxial shearing crusher 5. The frame 10 has left and right pairs of side plates 11 and 11, and conveys the crushed objects toward the other side of the vehicle body in the longitudinal direction of the lower side of the chute 15 and between the left and right pairs of side plates 11 and 11. The belt conveyor 7 is provided. In addition, the detection sensor of the overload detecting means 20 is provided in the frame 10. Since the structure of the crushing part of the biaxial shearing crusher 5 is the same as the conventional one, description is omitted.

2-4, 1st Embodiment is described.

2 is a side view of the biaxial shearing crushing apparatus 3 according to the first embodiment, and FIG. 3 is a front view thereof. 2 and 3, the frame 10 is provided with a first cross member 12 at one part in the longitudinal direction and a second cross member 13 at the other part along the vehicle left and right directions, respectively. On the outer surfaces of the left and right side plates 11 and 11 of the frame 10, photoelectric switches 21, 22, 23 and 24, which are examples of detection sensors of the overload detecting means 20, are provided. That is, the first light projector 21a of the photoelectric switch 21 is located above the belt conveyor 7 and near the longitudinal side one side and the other side of the side plate 11 on one side. And the second light emitter 22a of the photoelectric switch 22 are provided, and the third light emitter 23a is provided near the other side in the longitudinal direction of the second cross member 13, and the length of the frame 10 is provided. The fourth light projector 24a is provided in the vicinity of the other end in the direction. The 1st, 2nd, 3rd, and 4th light receivers 21b are located at the positions of the side plates 11 opposite to the first, second, third, and fourth light projectors 21a, 22a, 23a, and 24a. And 22b, 23b and 24b are provided, respectively. The positions of the optical axes B-B and C-C of the first and second light projectors 21a and 22a are provided above the predetermined height above the belt conveyor 7 and slightly below the lower surface of the first cross member 12. In addition, the position of the optical axis DD of the third light projector 23a is determined slightly below the lower surface of the second cross member 13, and the position of the optical axis EE of the fourth light projector 24a is set to the frame 10. It is settled slightly below the upper surface 14a of the other end side 14 in the longitudinal direction.

4 is a configuration diagram of the overload detecting means 20 of the first embodiment. In FIG. 4, the controller 30 inputs a detection signal from the light receivers 21b, 22b, 23b, 24b of each of the first, second, third, and fourth photoelectric switches 21, 22, 23, and 24. After determining whether it is in the overload state based on these detection signals, a predetermined command signal is output to each of the warning lamp 31, the buzzer 32, and the monitor 33 at the time of overload.

Next, the operation will be described. The crushed object put into the hopper 4 is crushed by the biaxial shearing type crusher 5, falls on the belt conveyor via the chute 15, and is conveyed to the other of the vehicle body longitudinal direction. The amount of the crushed material on the belt conveyor 7 becomes large, and the light of any one of the first, second, third, and fourth light emitters 21a, 22a, 23a, and 24a is blocked so that the first, second, and third When none of the fourth light receivers 21b, 22b, 23b, and 24b does not receive light, each light receiver inputs the light blocking signal to the controller 30. Subsequently, the controller 30 checks whether or not the light shielding state has been continued for a predetermined time (for example, 5 seconds), and if it is continued, determines that the phenomenon is not temporary and there is a possibility of blockage. Thereafter, the controller 30 outputs a warning signal to the warning light 31 and the buzzer 32 and outputs a display command signal to the monitor 33 to indicate which receiver has not received the light, i.e., overload. The detection signal of is displayed. The operator knows which place is likely to be blocked from these alarms, and changes the operation speed of the two-axis shearing type crusher 5 and the belt conveyer 7 for conveying the crushed matter, or performs emergency stop processing to check the location. The process is performed suitably.

Since the biaxial shearing crushing apparatus 3 of the present invention is configured as described above, the amount of crushed material on the belt conveyor 7 is directly measured to detect whether it is in an overload state. It is possible to reliably determine whether or not the crushed material is likely to be blocked. Therefore, by changing the operation speed or making an emergency stop in advance and inspecting the location, and appropriate processing can be performed, workability can be improved by eliminating the operation stop due to the blockage. In addition, since the detection sensors (photoelectric switches 21, 22, 23, 24 in this example) are provided at intervals along the conveying direction, it is possible to specify which of the places where the crushed object is likely to be blocked. The prevention of clogging can be performed efficiently. Moreover, since the detection sensor of the overload detection means is provided in the frame on the side of the conveyor, there is little possibility of damage by the crushed object.

Next, 2nd Embodiment is described with reference to FIGS. FIG. 5 is a side view of the biaxial shearing crushing device 3 according to the second embodiment, and FIG. 6 is a front view of FIG. 7 is a cross-sectional view taken along the line A-A of FIG. 8 is a configuration diagram of the overload detection means of the second embodiment. In addition, in these figures, the same code | symbol is attached | subjected to the same thing as the component shown in FIGS. 2-4, and the following description is abbreviate | omitted.

5 and 6, the detection of overloading the lid plate 16 provided at the upstream end of the conveyance direction of the belt conveyor 7 of the chute 15 provided below the biaxial shearing crusher 5. As an example of a sensor, the laser distance sensor 25 which radiates a laser toward the conveyance direction downstream side (the vehicle body longitudinal direction other side) of the belt conveyor 7 is provided. This laser distance sensor 25 detects overload in an area corresponding to the detection area of the photoelectric switches 21 and 22 of the first embodiment. X-X shown is the optical axis of the laser distance sensor 25. In FIG. 7, the optical axis X-X of the laser distance sensor 25 is determined at the position of the height H from the belt 8 of the belt conveyor 7. This height H is set to the position slightly below the lower surface of the 1st cross member 12 at the position higher than the normal height of the mounted crushed object shown by a broken line.

In FIG. 8, the measurement distance signal of the laser distance sensor 25 is input to the controller 30. The controller 30 of the overload detecting means 20a checks whether or not the measured distance is smaller than a predetermined value based on the measured distance signal of the laser distance sensor 25 to determine whether it is an overload. That is, normally, the laser beam reflected from the crushed object located in the other side of the predetermined distance in the longitudinal direction than the first cross member 12 is received and the distance is measured, but from the vicinity of the other side in the longitudinal direction of the first cross member 12. When deposition of crushed matter occurs at a position upstream of the conveying direction, the distance from the deposit to the deposit is measured by a reflected laser from the deposit, so that the measurement distance becomes smaller than the predetermined measurement distance in the usual time, thereby overloading is detected. In addition, deposition on the downstream side of the belt conveyor 7 which cannot be detected by the laser distance sensor 25 is detected by the photoelectric switches 23 and 24 as described above.

Next, the operation will be described. 5 and 7, the laser distance sensor 25 has the crushed object when the height of the crushed object loaded on the belt conveyor 7 reaches the laser optical axis XX as shown by the dashed-dotted line in FIG. 7. Measure the distance to, and outputs the measurement distance signal to the controller (30). The controller 30 checks whether the distance is smaller than a predetermined value based on the specific distance signal, judges that it is an overload state when it is small, and then determines whether the overload state has continued for a predetermined time (for example, 5 seconds) or more. If it is checked, if the command signal is output to the warning lamp 31 and the buzzer 32, the alarm is output, and the display command signal is output to the monitor 33 to indicate which position in the longitudinal direction of the overbody is generated. Let's do it. The operator knows which place may be blocked from these alarms, changes the operation speed or stops the operation, checks the location, and performs appropriate processing.

According to this embodiment, since the number of detection sensors of the overload detection means can be reduced, the structure is simple and the cost can be reduced. The other effect is the same as that of 1st Embodiment, and description is abbreviate | omitted here.

In the above embodiment, the self-propelled biaxial shearing crusher has been described, but may be a stationary equation. Although the distance to the crushed object is measured by the detection sensor of the overload detecting means, the laser distance sensor has been described as an example. However, the distance may be measured by using an ultrasonic wave or a radar. Although a photoelectric switch is used as a detection sensor provided to the left and right in the conveying direction of the crushed object, a limit switch or a proximity switch for detecting the fluctuation of the movable piece is installed outside the side plate with a movable piece that swings by a crushed object having a predetermined height or more. It does not matter.

As described above, the following effects are obtained by the present invention.

By overloading the crushed matter on the conveyor directly with the amount (height) of the crushed material, it is possible to reliably detect the light weight regardless of the light weight of the crushed material, thereby preventing work stoppage due to clogging and improving workability. Further, by installing a ray detection sensor along the conveying direction or by measuring the distance from the upstream side from the conveying direction upstream to the downstream to the overload part, it is possible to specify at which position in the conveying direction there is a possibility of blockage. As a result, it is possible to appropriately handle overloading.

Since the overload detection sensor is provided outside the side plate of the belt conveyor, there is no fear of damage caused by the crushed material.

Claims (4)

In the biaxial shearing crushing device (3), Frame 10; A biaxial shearing crusher 5 mounted on the frame 10; A belt conveyor (7) installed below the biaxial shearing crusher (5) for conveying the crushed crushed materials; And And overload detecting means 20 for detecting excess debris loaded on the belt conveyor 7: The overload detection means (20) is a two-axis shear type crushing device, characterized in that directly detect the excess crushed matter loaded on the belt conveyor (7). 2. The detection sensor (21, 22, 23, 24) of the overload detecting means (20) has a position above a predetermined height from the belt conveyor (7) on the side of the flow of the belt conveyor (7). 2-axis shear type shredding device, characterized in that installed on. The biaxial shearing crushing device according to claim 1 or 2, characterized in that the detection sensors (21, 22, 23, 24) of the overload detecting means (20) are provided at a plurality of locations. 2. The biaxial shearing crushing device according to claim 1, wherein the detection sensor (25) of the overload detecting means (20a) is provided in the longitudinal direction of the belt conveyor (7).