JPH0912149A - Discharge method of loose article piled hill - Google Patents

Abstract

PURPOSE: To smoothen a discharge work of a pile end part by memorizing a cross point of a linear edge part to an arc shape edge part of the top of a pile in a computer for controlling and detecting whether a rake away part of a reclaimer reaches the cross point at a discharge time so as to adjust a work. CONSTITUTION: Cross points A, B of a linear edge part 1b to an arc shape edge part 1c on the top 1a of a pile 1 are memorized in a computer for controlling. At a discharging time of the pile 1, it is detected whether a rake away part 3c reaches a cross point based on a running distance and turning locus of the rake away part 3c. After detection of the cross point A, the running distance of a reclaimer 3 in response to the one turning movement of the rake away part 3c is reduced so as to make from a certain amount of running pitch to a small distance Q and also reduction of a load is detected by the rake away part 3c based on separation from a slant surface of the pile 1 by a sensor installed in a rotation drive source and turning movement in an opposite direction is carried out by this detection signal and a discharge operation is continued.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for discharging a pile of loose material, and more particularly to efficiently perform a discharging operation corresponding to a pile shape or a discharging shape.

[0002]

2. Description of the Related Art For the temporary storage or storage of coal, ore and other loose materials, as shown in FIG. 4, as a technique for forming piles 1 by stacking the loose materials in piles. Kosho 46-5861 is proposed. In this technique, the bulk is dropped from the boom tip of the stacker on the same vertical line.

In the pile work of such bulk materials,
When the stacker travels linearly while keeping the dropping position of the bulk object constant (while keeping the same vertical line position) as in the technique of the above-mentioned Japanese Utility Model Publication No. 46-5861, FIG.
As shown in (a), a triangular pile 1 is formed.

When a sufficient place (yard or the like) for forming the pile 1 is secured, the stacker and the boom tip are rotated and moved alternately.
As shown in FIG. 5 (b), the pile 1 is formed in a trapezoidal cross section to suppress the height and improve workability during pile-up and payout.

On the other hand, Japanese Patent Publication No. 52-9908 has been proposed as a technique for paying out and paying out the pile 1.
In the pay-out technique of the pile 1, the stack reclaimer or the reclaimer is linearly moved along the pile 1, and in combination with the swing movement of the boom conveyor, the pile 1 is slanted from the side while considering the angle of repose. The payout is made in an arc shape.

FIG. 6 shows an arrangement example of the stacker 2 and the reclaimer 3 for carrying out the pile work of the bulks and the paying-out work of the pile 1. The pile 1 is separated from both sides in a parallel state. It is located in. In FIG. 6, reference numerals 4, 5, 6, and 7 indicate conveyor lines,
The bulk material is transferred in each direction, and the work of exchanging the bulk material with the stacker 2 and the reclaimer 3 is shared. That is, in the case of stacking the piles 1 in the shape of FIG.
The pile 1 as shown in FIG. 6 is formed on the basis of the turning direction of the boom tip. When paying out the pile 1 by the reclaimer 3 in the center, the fact that the width of the pile 1 is constant in the traveling direction of the reclaimer 3 is used, and the reciprocating boom conveyor of the reclaimer 3 is reciprocated at each payout stage. By repeating the turning while keeping the same turning angle, the payout by the automatic operation becomes possible.

[0007]

However, the remaining portion 1d, which is outside the intersections A, B, C and D of the straight edge 1b and the arcuate edge 1c at the top 1a of the pile 1, is paid out. When attempting to do so, the load on the scraping portion suddenly decreases at the disengaged portion because it easily comes off the inclined surface 1e, and when the scraping portion comes into contact with the inclined surface 1e of the residual portion 1d again, the load sharply increases. Phenomenon occurs, reclaimer 3
The impact on the reclaimer 3 is increased, and the automatic drivability of the reclaimer 3 is deteriorated. Then, when the paying-out work in the remaining portion 1d is temporarily stopped or interrupted and the paying-out work is restarted, if the scraping depth fluctuates, the paying-out work may not be performed due to a sudden decrease in load or the like.

The present invention has been made in view of these circumstances, and aims to achieve the following objects. Smooth out the work where the pile edge is changing. To reduce the impact on the reclaimer due to load fluctuations. To reduce the turning movement distance of the scraping part and achieve automation at the time of payout. Even if the payout work is interrupted, be sure to restart the payout work from the interrupted position.

[0009]

As a method for discharging piled piles by a reclaimer, an intersection of a linear edge portion and an arc-shaped edge portion at the top of the pile is stored in a control computer so that the piled piles can be easily discharged. After detecting whether the scraping part of the reclaimer has reached the intersection, and after detecting the intersection, the small movement of the reclaimer in the traveling direction and the detection of the separation of the scraping part from the inclined surface of the pile The technique of paying out the pile by the turning movement in the opposite direction by is adopted. When the payout work is interrupted, the position of the scraping section is stored in the control computer, and when restarting the payout work, the scraping section is set to the above-mentioned interrupted position to discharge the pile. The technology of restarting is adopted. When arranging both a stacker for stacking bulks and a reclaimer for paying out piles, and arranging the stacker running line and the reclaimer running line in parallel across the pile stacking range. A technique is used in which the pile shape based on the traveling and turning movement of the stacker is stored in the reclaimer control computer, and then the pile is paid out by the turning movement and running of the reclaimer. Correlation between horizontal coordinates of intersection of straight edge and circular arc at pile top, initial height of pile, angle of repose, running position at scraping section, and undulation height when stacking bulks by stacker The relationship is obtained and stored in the control computer, and in the middle of the pay-out stage by the scraping unit, the status of the linear edge portion and the arc portion in the corresponding pay-out stage is determined by these data. The technology of calculating and setting the payout range is adopted.

[0010]

[Operation] When the scraper is swung to move the reclaimer linearly and the pile is discharged, the center of the swivel movement shifts to the side of the pile, and the pile is discharged in an oblique arc shape. Will be issued. When paying out the straight part of the pile, the scraping part is swung by the same arc length and paying out. At this time, whether or not the payout position has reached the position of the intersection of the straight edge and the arcuate edge of the pile is determined, and after the intersection is detected, a small movement of the reclaimer in the traveling direction is performed. Then, the work of discharging the pile little by little is continued by the turning movement of the scraping portion in the opposite direction. When the scraping unit separates from the pile, the position is detected by the sudden decrease in the load, and the payout direction is switched. At the time of restarting the work after interruption of the payout work, the scraping work is smoothly taken over by setting the scraping unit again at the stored position. When the stacker's travel line and the reclaimer's travel line are separated, the two turning directions are greatly different, but in the straight part, payout is performed at a constant turning angle, and the end is beyond the intersection. In the operation of paying out the remaining portion located in the part, the work can be smoothly performed even if the shape is changed by paying out little by little. By storing various data of pile piles in the control computer,
At the time of payout, the state of the pile in the middle of payout using these data and the operating condition of the reclaimer are required, and the automatic payout operation is accurately performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for paying out loose piles of materials according to the present invention will be described below with reference to FIGS. FIG. 1 is a plan view showing the payout status of the pile 1, FIG. 2 is a connection diagram showing the data transmission status between the stacker 2, the reclaimer 3, and the control computer (ground side computer) 10. FIG. 3 shows the payout status of the pile 1. It is a front view shown.

In the example of FIG. 1, the stacker 2
The piles 1 piled up as shown in FIG. 5B are discharged by the reclaimer 3 arranged on the side opposite to the traveling line 2L of the stacker 2 shown in FIG. In this case, the traveling line 2L of the stacker 2 and the traveling line 3L of the reclaimer 3 are set in parallel.

In the pile 1, a flat top portion 1a is formed based on a pile operation accompanied by turning by the stacker 2.
The linear edge 1b, the arcuate edge 1c, and the inclined surface 1e based on the angle of repose α are formed.

In the reclaimer 3, a trolley 3a traveling on a rail forming a traveling line 3L, a boom conveyor 3b mounted on the trolley 3a so as to be capable of turning and undulating, and a boom conveyor 3b. What has a bucket 3c which is arranged at the tip and scrapes the loose material from the pile 1 and transfers it to the boom conveyor 3b is applied. In addition,
The scraping unit 3c is provided with a bucket wheel and a plurality of buckets that are rotated by a rotary drive source such as a hydraulic motor. Explaining the specification example of the reclaimer 3, the scrap scraping and transferring ability: 2
600 tons / hour, turning radius of boom conveyor 3b: 50
Meter, depth of cut of bucket 3c: 4 m, traveling speed: 30 m / min, maximum turning angle range: 170
Has the ability of ° etc.

In the control computer 10,
The stacker 2, the stacker 2, and the reclaimer 3 are appropriately arranged in a driver's cabin at a high place where the stacker 2 and the reclaimer 3 can be monitored, and are organically connected to the operation means of the stacker 2 and the reclaimer 3, and as shown in FIG. And E for converting electric signals of various sensors into optical signals for the reclaimer 3.
/ O converter 11, an optical fiber cable 12 for transmitting an optical signal output from the E / O converter 11 to an operation control room at a remote location, and an O / O converter for converting an optical signal into an electrical signal. They are connected to each other with the E converter 13 interposed therebetween.

Hereinafter, the implementation status of the payout work of the pile 1 will be described.

[Collecting pile data] When stacking pieces of bulk by the stacker 2 by the combination of traveling and turning movement based on the traveling line 2L to form the pile 1 as shown in FIG. 5B, The pile information includes the angle of repose α, the pile height, and the horizontal coordinates of the intersections A, B, C, and D between the straight edge 1b and the arc edge 1c at the top 1a of the pile 1 as the pile information. Is calculated and stored in the control computer 10.

[Pile Discharging] In the reclaimer 3, the hoisting angle and swing angle range of the boom conveyor 3b, the payout depth of the scraping portion 3c, and the like are set, and at the beginning of the payout of the pile 1, manual operation is performed. The scraping part 3c is made to slip into the pile 1 so that the turning locus S of the scraping part 3c intersects the two linear edges 1b, and each data stored in the control computer 10 will be described below. Based on this, the scraping unit 3c is caused to travel at a traveling pitch P of a constant distance, and is reciprocally swung by the same arc length to start the automatic operation of paying out the pile 1. In other words, the pile 1 is paid out by the automatic operation by setting the traveling pitch P of the reclaimer 3, the turning movement of the scraping portion 3c according to the turning angle range, and the set payout depth.

[Setting of Outgoing Path Distance] On the outward path in which the vehicle travels as shown by arrow F in FIG. 3, since the scraping portion 3c is located in front of the traveling direction, the scraping step is lowered by scraping. The boom conveyor 3b turns on the surface 1f in a separated state. However, when the scraping portion 3c is moved backward without changing the undulation angle, the scraping portion 3c passes through the end of the scraping surface 1f. After that, the boom conveyor 3b may move downward, and the boom conveyor 3b may come into contact with the pile (scraping surface 1f) of the remaining pile 1 (or it is unavoidable that the boom conveyor 3b is rotated in a contact state). Therefore, the forward path distance T of the reclaimer 3 is set, and it is dealt with by paying out stepwise like a, b, c, d, and e in FIG.

[Detection of Intersection Point between Straight Edge and Arc Edge] When the pile 1 is paid out, the scraping portion 3c
Until the control computer 10 detects whether the scraping section 3c has reached the intersections A, B, C, D, for example, based on the traveling distance and the turning trajectory of the intersection, until the intersection A is detected. The pay-out of the pile 1 is continued by moving the scraping portion 3c in the range of each step by the same arc length. In addition, in each payout stage a, b, c, d, and e, based on each data stored in the control computer 10, the straight line in each payout stage is associated with the inclined surface 1e of the pile 1. It suffices to obtain the intersection between the curved edge portion and the turning trajectory S by calculation.

[Payout after Detection of Intersection Point] After the intersection point A is detected, the traveling distance of the reclaimer 3 corresponding to one turning movement of the scraping portion 3c is changed from a certain traveling pitch P to a small distance Q. And a decrease in load due to the scraping portion 3c separating from the inclined surface 1e of the pile 1 is detected by a sensor or the like arranged in the rotary drive source, and the detection signal is used to turn in the opposite direction. Move. Such a reverse turn and a small distance Q shown by a broken line in FIG.
By repeating the traveling of (3), the paying-out work by the automatic operation is continued until the scraping part 3c is separated from the inclined surface 1e and becomes the unloaded state.

[Discontinuation of payout before detection of intersection] Based on the reason that the payout amount of the pile 1 reaches a fixed amount, the intersection A
If the payout work is interrupted before the detection of the position, the position of the scraping unit 3c at the time of the interruption (horizontal coordinates or boom conveyor 3b
The undulation height) is stored in the control computer 10. At the time of restarting the payout work, the scraping unit 3c is set at the above-mentioned interrupted position, and the scraping unit 3c is moved in the direction at the time of the interruption, so that the payout work of the pile 1 is continuously performed. It

[Discontinuation of Payout after Detection of Intersection Point] When the payout work is interrupted after detection of the intersection point A, residual due to the combination of the traveling of the reclaimer 3 for a small distance Q and the turning trajectory S of the scraping portion 3c. The payout of the portion 1d is performed until it becomes "0". In this case, the remaining portion 1d
When the scrapes are present, the scraping portion 3c comes into contact with the residual portion 1d to increase the load. However, since the increase in the load is suppressed by traveling a short distance Q, the landslide of the end portion of the pile 1 or the like occurs. Even if there is a scratch, the remaining portion 1d due to the contact of the scraping portion 3c is irrespective of the remaining pile shape.
The presence or absence of is detected, and the remaining portion 1d is not detected at all, so that the end of work is confirmed.

[0024]

EFFECTS OF THE INVENTION According to the method for paying loose bulk piles according to the present invention, the following effects can be obtained. (1) The intersection of the straight edge and the arcuate end at the top of the pile is stored in the control computer to detect whether or not the scraping portion has reached the intersection during payout, and after the intersection is detected. Since the pile is paid out by the small distance traveling and turning movement of the reclaimer, it is possible to reduce the phenomenon that the scraping part comes off the inclined surface of the pile, reduce the impact on the reclaimer and improve the durability. it can. (2) From the above, even if the shape of the pile end portion is changed, it is possible to suppress the sudden decrease and sudden increase in the load, and improve the automatic drivability of the reclaimer. (3) By storing the positions of the intersection and the scraping section in the control computer, even when the payout work is interrupted at any position before or after the detection of the intersection,
It is possible to improve the reliability by resetting the scraping unit to the interruption position and surely restarting the payout work from the interruption position. (4) Even when the stacker and the reclaimer are arranged in a separated state, or when the shape of the circular arc edge of the pile intersects the scraping direction, the work of discharging the remaining portion can be smoothly continued without any trouble. be able to. (5) When piled up, straight edges, arc edges, horizontal coordinates of intersections, initial pile height,
By storing and managing the angle of repose and the like in the control computer, it is possible to reduce the turning movement distance of the scraping unit, achieve automation at the time of payout, and improve the efficiency of the entire payout work.

[Brief description of the drawings]

FIG. 1 is a plan view showing a pile dispensing situation in an embodiment of a method for dispensing loose bulk piles according to the present invention.

FIG. 2 is a connection diagram showing a data transmission state among a stacker, a reclaimer, and a control computer in FIG.

FIG. 3 is a front view showing a payout state of the pile in FIG.

FIG. 4 is a front view showing a piled state of piles.

FIG. 5 is a cross-sectional view showing an example of a pile pile shape.

FIG. 6 is a plan view showing an arrangement example of a stacker and a reclaimer.

[Explanation of symbols]

 1 Pile (Deposit Mountain) 1a Top part 1b Straight edge 1c Arc edge 1d Remaining part 1e Sloping surface 1f Scraping surface 2 Stacker 2L Traveling line 3 Reclaimer 3L Traveling line 3a Truck 3b Boom conveyor 3c Scraping part 10 Control Computer (ground computer) 11 E / O converter 12 Optical fiber cable 13 O / E converter A, B, C, D Intersection point T Forward distance P Traveling pitch Q Small distance S Turning trajectory α Repose angle

Claims (4)

[Claims] 1. A method for paying out piled piles (1) by a reclaimer (3), comprising a straight edge (1b) and an arcuate edge (1) of the top (1a) of the pile.
The intersection (A, B, C, D) with c) is stored in the control computer (10) and it is detected whether or not the scraper (3a) of the reclaimer at the time of payout reaches the intersection. , A method of paying out a pile of loose objects, characterized in that the pile is paid out by a turning operation of a scraping unit after the traveling distance is reduced after the intersection is detected. 2. When the paying-out work is interrupted before the intersection (A, B, C, D) is detected, the position of the scraping part (3a) is stored in the control computer (10) and the paying-out work is performed. 2. The method for paying out loose bulk piles according to claim 1, wherein a scraping part is set at the interrupted position to restart the payout of the pile (1) at the restart of the step. 3. A stacker (2) traveling line (2L) and a reclaimer (3) traveling line (3L) are arranged in parallel with each other across the piled range of the pile (1), and the stacker is swung. 3. The pile pile-up method according to claim 1 or 2, wherein the piles are piled up by the traveling and traveling, and then the piles are discharged by the turning movement of the reclaimer and the traveling. 4. A traveling line (2) in the stacker (2)
L) and the turning line (3L) intersection (A, B, C, D)
Is calculated at the top portion (1a) of the pile (1), and the situation of the straight edge and the arc portion of the payout stage in the scraping portion (3a) is calculated from the initial height of the pile and the angle of repose ( α), the traveling position of the scraping portion (3a), the turning angle, and the height of the undulations are calculated to set the payout range. Payment method.