JP2020200143A - Reclaimer's fallen-ore recovering unit - Google Patents

Abstract

To provide a reclaimer's fallen-ore recovering unit adapted to reduce the frequency of cleaning work by properly recovering fallen-ore and enhance the operating rate of a reclaimer.SOLUTION: A reclaimer's fallen-ore recovering unit comprises a turnable body that is mounted on a work floor of a portal movable body to travel over a ground conveyor, a chute that guides onto the ground conveyor a raw material loaded on the turnable body, and a boom that comprises (a) at a front end a wheel bucket for scooping a raw material pivotally supported for elevation in a required angle range on an upper frame body of the chute, holds an in-machine conveyor supported to swivel by a return roller after inputting the scooped raw material onto the chute arranged on the turnable body and is coupled with a frame having a counterweight (b) oppositely at the front end. The turnable body comprises below the in-machine conveyor a fallen-ore recovery plate having one end pivotally supported at an end of the turnable body and the other end abutting against an outer wall face of the chute so as to recover fallen-ore and allow the recovered fallen-ore to outflow onto the work floor by inclination cooperatively with elevation of the boom.SELECTED DRAWING: Figure 2

Description

The present invention relates to a reclaimer demineral recovery device that continuously collects raw materials stored in a raw material yard.

In the raw material yard of a steel mill, etc., the drive mechanism controls the operation of the reclaimer that moves up and down, turns, and runs, and the wheel bucket and in-flight conveyor provided by the boom collect and transport the raw material (iron ore, coal, etc.). , Send the raw material to the downstream process.

Although the operation of the reclaimer is automatically controlled (see, for example, Patent Documents 1 and 2), the raw material powder (falling ore) that falls from the in-flight conveyor when the in-flight conveyor that conveys the collected raw material reverses and patrols. ) Accumulates around the drive mechanism and induces equipment failure. When a facility failure occurs, the operating rate of the reclaimer decreases, so it is necessary to regularly clean and remove the fallen ore accumulated around the drive mechanism.

In recent years, as the amount of fine powder raw materials handled has increased, the amount of ore deposits has increased, and equipment failures frequently occur. Therefore, it is necessary to frequently clean the accumulated sediment so that the operating rate of the reclaimer does not decrease, which is an important issue in the operation of the reclaimer.

FIG. 1 shows a schematic structure of the reclaimer. A ground conveyor 1 for transporting raw materials such as ore and coal to a blast furnace or a sintering factory is laid in the raw material yard. A rail 2 is laid parallel to the ground conveyor 1, and a gate-shaped movable body 3 is placed on the rail 2 so as to straddle the ground conveyor 1. A work floor 4 is placed on the gate-shaped movable body 3, and a swivel movable body 5 on which the chute 6 is placed is mounted so as to be swivelable by a drive mechanism (not shown).

A boom 8 is provided at the tip of the chute 6 of the swivel movable body 5 and holds an in-flight conveyor 9 for transporting the raw material collected by the wheel bucket 7, and has a required angle range (right side in the drawing). It is pivotally supported so that it can move up and down in the range of the one-dot chain line arrow). A monitoring room for monitoring the collection and transportation of raw materials by the foil bucket 7 and the in-flight conveyor 9 is provided on the chute 6.

The chute 6 accommodates the raw material conveyed by the in-flight conveyor 9, and guides the raw material to the hopper 10 fixed to the center of the work floor 4 and the gantry movable body 3 through the central portion of the swivel movable body 5. To do. The raw material guided to the hopper 10 falls on the ground conveyor 1 via the vibration feeder 1a and the transfer chute 1b, and is transported to the blast furnace or the sintering factory.

On the opposite side of the boom 8, a counterweight 12 is provided at the tip, and a frame 11 that is raised and lowered within a required angle range (the range of the alternate long and short dash arrow in the figure) is connected in conjunction with the elevation of the boom 8. There is.

The boom 8 is held by a frame 13a and a frame 13b extending from the jib 13, and the frame 11 is also held by a frame 13c and a frame 13d extending from the jib 13. The operation of the reclaimer, such as the running of the gantry movable body, the turning of the swivel movable body, the elevation of the boom 8, the rotation of the wheel bucket 7 and the patrol of the in-flight conveyor 9, is controlled by remote automatic control in the central operation room. To.

After the raw material is put into the chute 6, the in-flight conveyor 9 reverses and is held by the return roller 9a to circulate. At that time, the raw material powder adhering to the patrolling in-flight conveyor 9 falls. This is the cause of the mine fall. Normally, a belt cleaner (not shown) is arranged at a predetermined position so that the raw material powder adhering to the traveling in-flight conveyor 9 falls into the chute 6, but the effect of the belt cleaner is not perfect.

The finer the raw material powder, the smaller the effect of the belt cleaner, and the raw material powder adhering to the traveling in-flight conveyor 9 falls on the outside of the chute 6 and is deposited as a fallen ore. The drive mechanism of the reclaimer is concentrated around the chute 6, and the accumulation of the fallen ore induces a facility failure. Therefore, it is necessary to clean the fallen ore in a timely manner.

In the reclaimer shown in FIG. 1, a demining receiving plate 15 is fixed to a chute 6 directly under the first return roller 9a'so that the demining does not accumulate around the drive mechanism. However, if the fallen mine received by the fallen mine receiving plate 15 is left for a long time, the sedimentary powder of the fallen mine flows down and accumulates around the drive mechanism, causing equipment failure.

The area around the drive mechanism is usually a place where cleaning work is difficult, and even if the mine drop plate 15 is arranged, it is inevitable that the mine fallen deposits around the drive mechanism. Protecting the mechanism from mine fall and avoiding equipment failure is not sufficient with current equipment.

Japanese Unexamined Patent Publication No. 01-2423222 Japanese Unexamined Patent Publication No. 04-217518

In the operation of the reclaimer, it is difficult to completely eliminate the ore fall that is the cause of the equipment failure, and it is possible to clean and remove the ore fall before the accumulation of the ore fall increases and the equipment failure occurs. This is a realistic measure.

However, the cleaning work is performed by suspending the operation of the reclaimer, and since the area around the drive mechanism is usually a place where the cleaning work is difficult, as the number of cleaning work increases, the cleaning cost increases and the cleaning work also increases. The utilization rate of the reclaimer decreases.

Furthermore, an increase in the amount of fallen ore deposits that induces equipment failure not only increases cleaning costs and lowers the operating rate of reclaimers, but also increases maintenance and outsourcing costs and lowers the quality of sintered ore. Since it is connected, it is required to efficiently collect the fallen ore, reduce the number of cleaning operations, and construct a facility that does not hinder the operating rate of the reclaimer.

Therefore, based on the above requirements, in the operation of the reclaimer, the present invention appropriately collects the fallen ore at a place where a large amount of the fallen ore is generated so as not to accumulate around the drive mechanism, and performs the cleaning work. An object of the present invention is to reduce the number of times and to increase the operating rate of the reclaimer, and an object of the present invention is to provide a mine recovery device that solves the problem.

The present inventors have diligently studied means for solving the above problems. As a result, when the in-flight conveyor reverses and patrols, it receives the fallen mine at a position where a large amount of fallen mine is likely to occur, and arranges a device that can recover the fallen mine in conjunction with the elevation and turning of the reclaimer. I came up with the idea.

The present invention has been made based on the above idea, and the gist thereof is as follows.

(1) A gate-shaped movable body that runs across a ground conveyor on a rail parallel to the ground conveyor that transports raw materials (ore, coal, etc.) in the raw material yard to the next process.
A work floor placed on a gantry movable body,
A swivel movable body provided with a chute for guiding the above raw materials to a ground conveyor, which is rotatably placed on a work floor, and
The upper frame of the chute was pivotally supported in a required angle range, and (a) a foil bucket for collecting raw materials was provided at the tip, and the collected raw materials were put into the chute arranged on the swivel movable body. After that, it holds an in-flight conveyor that is supported by a return roller and circulates, and on the opposite side, it is equipped with a boom that connects (b) a frame with a counterweight at the tip.
It is a reclaimer's demineralization recovery device that remotely controls the ups and downs of the boom, the rotation of the wheel bucket, and the patrol of the in-flight conveyor to dispense the raw materials, and sends the raw materials in the raw material yard to the ground conveyor.
The swivel movable body is pivotally supported below the in-flight conveyor at one end by the end of the swivel movable body, and the other end abuts on the outer wall surface of the chute to collect the fallen ore, and the recovered ore fall is boomed. A reclaimer's demining recovery device characterized by being provided with a demining recovery plate that tilts in conjunction with the elevation of the conveyor and causes it to flow out to the work floor.

(2) The reclaimer according to (1) above, wherein the cross section of the fallen ore recovery plate is gutter-shaped, and the width of the upper part of the tub is 1.2 times or more the width of the in-flight conveyor. Falling ore recovery equipment.

(3) The reclaimer according to (1) or (2) above, wherein the other end of the fallen ore recovery plate is provided with an elastic plate that maintains contact while sliding with the outer wall surface of the chute. Falling ore recovery equipment.

(4) The reclaimer demining recovery device according to any one of (1) to (3) above, wherein the demining recovery plate is provided with a vibrator at the bottom.

(5) The reclaimer fallen ore recovery device according to any one of (1) to (4) above, wherein the fallen ore recovery plate tilts in a range equal to or greater than an angle exceeding the angle of repose of the raw material.

(6) The fallen ore recovery plate is connected to the boom by a long chain, and during the payout operation, the boom does not tilt due to the elevation of the boom, and after the payout work is completed, the reclaimer travels and the boom moves. The reclaimer demining recovery device according to any one of (1) to (5) above, wherein when ascending, turning, or moving to a standby position where a pile of raw materials can be avoided, the reclaimer is pulled by the chain and tilts. ..

(7) The reclamation of the reclaimer according to any one of (1) to (6) above, wherein the work floor is provided with a delivery hole and a delivery pipe for delivering the accumulated sediment to the ground conveyor. apparatus.

According to the present invention, in the operation of the reclaimer, at a place where a large amount of ore fall occurs, the ore fall is properly collected so as not to be deposited around the drive mechanism, and the number of cleaning operations is reduced. , The operating rate of the reclaimer can be increased.

It is a figure which shows the schematic structure of a reclaimer. It is a figure which shows the schematic structure of the swivel part of a reclaimer. It is a figure which shows typically the cooperation between the elevation / turning of the boom and the recovery / outflow of the fallen mine. It is a figure which shows the side aspect of the gate type movable body on which the work floor is placed.

The reclaimer mine recovery device of the present invention (hereinafter, may be referred to as "the device of the present invention") is
A gate-shaped movable body that runs across the ground conveyor on a rail parallel to the ground conveyor that transports raw materials (ore, coal, etc.) in the raw material yard to the next process.
A work floor placed on a gantry movable body,
A swivel movable body provided with a chute for guiding the above raw materials to a ground conveyor, which is rotatably placed on a work floor, and
The upper frame of the chute is pivotally supported so that it can be raised and lowered within the required angle range. (A) A foil bucket for collecting raw materials is provided at the tip, and the collected raw materials are put into the chute placed on the swivel movable body. After that, it holds the in-flight conveyor that is supported by the return roller and circulates, and on the opposite side, it is equipped with a boom that (b) connects a frame with a counterweight at the tip.
It is a reclaimer's demineralization recovery device that remotely controls the ups and downs of the boom, the rotation of the wheel bucket, and the patrol of the in-flight conveyor to dispense the raw materials, and sends the raw materials in the raw material yard to the ground conveyor.
The swivel movable body is pivotally supported below the in-flight conveyor at one end by the end of the swivel movable body, and the other end abuts on the outer wall surface of the chute to collect the fallen ore, and the recovered ore fall is boomed. It is characterized by being provided with a fallen ore recovery plate that tilts in conjunction with the elevation of the conveyor and flows out to the work floor.

Hereinafter, the apparatus of the present invention will be described with reference to the drawings. However, the drawings show one aspect of the apparatus of the present invention, and the apparatus of the present invention is not limited to the embodiments shown in the drawings.

FIG. 2 shows a schematic structure of the swivel portion of the reclaimer. Since the basic structure of the reclaimer is the same as that of the reclaimer shown in FIG. 1, the constituent members having the same symbols as those shown in FIG. 1 in FIG. 1 are the same as the constituent members shown in FIG.

The work floor 4 is placed on a gate-shaped movable body (see FIG. 1) that runs across the ground conveyor on a rail parallel to the ground conveyor that transports raw materials such as ore and coal in the raw material yard to the next process. A swivel movable body 5 is placed on the work floor 4, and a chute 6 for guiding the raw material to the ground conveyor is placed on the swivel movable body 5.

The upper frame body 6a of the chute is provided with a foil bucket (not shown) at the tip of (a) for collecting raw materials, and after the collected raw materials are put into the chute 6 arranged on the swivel movable body 5, the return roller 9a ', A boom 8 that holds the in-flight conveyor 9 that is supported by 9a and circulates, and (b) connects a frame (see FIG. 1) having a counterweight at the tip on the opposite side is required by the shaft support member 6b. It is pivotally supported so that it can be raised and lowered within the angle range of.

The swivel of the swivel movable body 5, the elevation of the boom 8, and the collection and transfer of raw materials (payout work) by the rotation of the wheel bucket and the patrol of the in-flight conveyor are controlled by remote control in the central operation room ( (See Patent Documents 1 and 2).

After dropping the raw material onto the chute 6, the in-flight conveyor 9 reverses and circulates supported by the return rollers 9a'and 9a, but at that time, ore fall occurs. After the in-flight conveyor 9 is reversed, the ore fall that occurs up to the latest return roller 9a'falls into the chute 6, but the ore fall that occurs after passing the return roller 9a' is swivelable on the outside of the chute 6. Accumulate on body 5 and work floor 4.

The finer the raw material, the more difficult it is for the ore to fall from the in-flight conveyor 9, and the more likely it is to occur after passing the return roller 9a'. Therefore, one end of the swivel movable body 5 is pivotally supported by the shaft support 19 at the end of the swivel movable body 5 at a place where the ore fall on the outside of the chute 6 is likely to be deposited below the in-flight conveyor 9. The end of the chute 6 abuts on the outer wall surface of the chute 6 and is provided with a demining recovery plate 16 that tilts in conjunction with the elevation of the boom 8.

That is, the fallen ore recovery plate 16 receives and collects the fallen ore generated from the in-flight conveyor 9 that is supported by the return rollers 9a'and 9a and circulates, and after the discharge work is completed, it is linked to the elevation and turning of the boom 8. It has a function of tilting / moving and flowing out to a specific area of the work floor 4. The outflow of mine fall from the mine recovery plate 16 will be described later.

The fallen ore recovery plate 16 is preferably a gutter-shaped one that has walls on the left and right so that the received fallen ore does not flow out to the left and right and can hold a large amount of fallen ore. The width of the upper part of the tub is preferably 1.2 times or more the width of the in-flight conveyor 9 in terms of reliably receiving the fallen ore. The upper limit of the width of the upper part of the tub is appropriately set in consideration of the width of the boom 8 and the shapes and dimensions of other constituent members.

One end is reliably maintained in contact with the outer wall surface of the chute 6 and the other end of the falling ore recovery plate 16 which is pivotally supported and tilted by the shaft support 19 at the end of the swivel movable body 5 to recover the falling ore. In order to eliminate leakage, it is preferable to provide an elastic plate 17 at the tip of the other end of the fallen ore recovery plate 16 so as to flexibly contact the outer wall surface of the chute 6 while sliding.

The material of the fallen ore recovery plate 16 is not limited to a specific material as long as it has a mechanical strength that can withstand the accumulated weight of the fallen ore, but a metal, particularly steel, is preferable in terms of mechanical strength.

The material of the elastic plate 17 is not limited to a specific material, but is flexible as long as it has elasticity that allows it to flexibly contact the outer wall surface of the chute 6 while sliding and maintain close contact with the outer wall surface of the chute 6. In this respect, for example, a rubber material is preferable.

The fallen ore recovery plate 16 is connected to the connecting portion 8b of the lower boom 8a by a long chain 18 having a margin, and tilts with the shaft branch portion 19 as a fulcrum in conjunction with the elevation of the boom 8. .. The lowermost mine recovery plate 16 (in the figure, the mine recovery plate 16 (a)) is stationary at an inclination angle at which the mine fall does not slide down during the payout operation.

During the payout operation, it is desirable that the fallen ore does not slide off the fallen ore recovery plate and is deposited. Therefore, the inclination angle of the lowest fallen ore recovery plate 16 (a) is set to be less than the angle of repose of the raw material. According to the operation results of the in-flight conveyor, the inclination angle is preferably horizontal to about 30 °.

Since the fallen ore recovery plate 16 (a) is connected to the connecting portion 8b'of the lower boom 8a' by a long chain 18, the in-flight conveyor 9 does not tilt due to the elevation of the boom 8. That is, during the discharge operation of the in-flight conveyor, all of the fallen ore is deposited on the fallen ore recovery plate 16 (a), and the outflow of the fallen ore to the work floor 4 is suppressed.

The fallen ore recovery plate 16 (a) is chained while the boom 8 moves up and down to the standby position (described later) by remote control in the central operation room after the discharge work of the in-flight conveyor 9 is completed. It is pulled by 18 and tilts upward, passes through the ore fall recovery plate 16 (b), reaches the uppermost ore fall recovery plate 16 (c), and causes the ore fall to flow out to the work floor. The inclination angle of the fallen ore recovery plate 16 (c) needs to be equal to or greater than the angle of repose of the raw material to be discharged by the in-flight conveyor 9.

It is preferable to provide a vibrator 20 at the bottom of the mine recovery plate 16. The finer the raw material, the greater the amount of ore fall that adheres to the ore fall recovery plate 16 and remains. Therefore, when the ore fall recovery plate 16 reaches the ore fall recovery plate 16 (c), the vibrator 20 is turned on. It can be activated to allow adhering and residual ore fall to the work floor 4.

In FIG. 2, the fallen ore recovery plate 16 is connected to the connecting portion 8b of the lower boom 8a with a long chain 18 having a margin to recover the fallen ore and drain it to a specific range of the work floor. Although the embodiment is shown, the tilting of the fallen ore recovery plate may be linked to the elevation / turning of the boom by using other means, for example, an electric means, without using a chain. By linking the tilt of the mine recovery plate to the turning of the boom, the outflow range of the mine drop on the work floor can be further limited.

Next, the coordination between the elevation / turning of the boom during and after the payout work and the recovery / outflow of the fallen mine will be described.

FIG. 3 schematically shows the coordination between the elevation / turning of the boom and the recovery / outflow of mine fall. Within the "payout turning range" shown in FIG. 3, the raw material is paid out from the pile by raising and lowering and turning the boom 8 pivotally supported by the upper frame of the chute 6 mounted on the turning movable body 5. During the raw material dispensing operation, as described above, all the fallen ore is deposited on the fallen ore recovery plate, and the outflow of the fallen ore to the work floor 4 is suppressed.

When the raw material dispensing work is completed, the boom 8 is remotely controlled in the central operation room to rotate and move to the “moving turning position” shown in FIG. During this time, the mine recovery plate does not tilt and the mine does not fall around the drive mechanism, as described above.

When the boom 8 turns and reaches the "turning position when moving", the boom 8 rises and turns to the standby position directly above the ground conveyor 1 and moves. During this time, as shown in FIG. 2, the mine recovery plate is pulled by the chain (18 in FIG. 2) and begins to tilt upward.

Until the boom 8 rises and turns to the standby position directly above the ground conveyor 1 and finishes moving, that is, the fallen ore recovery plate is pulled by the chain to the highest position (the inclination angle is equal to or greater than the angle of repose of the raw material). ) (Refer to the falling ore recovery plate 16 (c) in FIG. 2), it is desirable that the falling ore does not flow out from the falling ore recovery plate, but the boom 8 rises and turns on the work floor 4. Therefore, even if it spills, the ore fall will fall on the work floor and will not increase the burden of cleaning work.

When the boom 8 rises and turns to the standby position directly above the ground conveyor 1 and finishes moving, that is, the fallen ore recovery plate is pulled by the chain to the highest position (the inclination angle is equal to or greater than the angle of repose of the raw material). (Refer to the ore fall recovery plate 16 (c) in FIG. 2), the ore fall from the ore fall recovery plate is concentratedly dropped and deposited around the delivery hole 4a provided on the work floor. A delivery pipe for sending the fallen ore to the ground conveyor 1 is connected to the delivery hole 4a, which will be described with reference to FIG.

Since the fallen ore is concentratedly dropped and accumulated around the delivery hole 4a, the work floor may be cleaned by sweeping the fallen ore into the delivery hole 4a, and the burden of the cleaning work is greatly reduced. Although FIG. 3 shows a case where there is one delivery hole, two or more delivery holes may be provided in order to reduce the burden of cleaning work.

FIG. 4 shows a side view of the gate-shaped movable body on which the work floor is placed. A delivery pipe 4b having an opening at the other end facing the ground conveyor is connected to the delivery hole 4a provided in the work floor 4. The ore fall swept into the delivery hole 4a on the work floor 4 falls from the delivery pipe 4b to the ground conveyor 1 and is collected.

Next, an example of the present invention will be described. The conditions in the examples are one condition example adopted for confirming the feasibility and effect of the present invention, and the present invention is described in this one condition example. It is not limited. In the present invention, various conditions can be adopted as long as the gist of the present invention is not deviated and the object of the present invention is achieved.

(Example)
A mine recovery device was placed at the swivel part of the reclaimer (see FIG. 2), and the reclaimer was operated. During the reclaimer discharge operation, the mine fell and accumulated on the mine recovery device, and no mine was deposited on the swivel part of the reclaimer.

In addition, when the reclaimer discharge work was completed, the fallen ore that had flowed out of the fallen ore recovery plate and had fallen or accumulated around the delivery hole of the work floor was swept into the delivery hole of the work floor as appropriate (Fig.). 3 and Fig. 4), the cleaning work could be completed quickly without increasing the burden.

As described above, according to the present invention, in the operation of the reclaimer, in the place where a large amount of ore fall occurs, the ore fall is properly recovered so as not to be accumulated around the drive mechanism, and the cleaning work is performed. The number of times can be reduced and the operating rate of the reclaimer can be increased. Therefore, the present invention is highly applicable not only in the steel industry but also in industries that require a raw material yard.

1 Ground conveyor 1a Chute 1b Hopper 2 Rail 3 Gate type movable body 4 Work floor 4a Sending hole 4b Sending pipe 5 Swivel movable body 6 Chute 6a Upper frame body 6b Shaft support member 7 Wheel bucket 8 Boom 8a, 8a'Lower boom 8b, 8b'Connecting part 9 In-flight conveyor 9a, 9a' Return roller 10 Hopper 11 Frame 12 Counterweight 13 Jib 13a, 13b, 13c, 13d Frame 14 Monitoring room 15 Falling ore receiving board 16 Falling ore recovery board 16 (a), 16 ( b), 16 (c) Fallen ore recovery plate 17 Elastic plate 18 Chain 19 Shaft branch 20 Vibrator

Claims (7)

A gate-shaped movable body that runs across the ground conveyor on a rail parallel to the ground conveyor that transports raw materials (ore, coal, etc.) in the raw material yard to the next process.
A work floor placed on a gantry movable body,
A swivel movable body provided with a chute for guiding the above raw materials to a ground conveyor, which is rotatably placed on a work floor, and
The upper frame of the chute is pivotally supported so that it can be raised and lowered within the required angle range. (A) A foil bucket for collecting raw materials is provided at the tip, and the collected raw materials are put into the chute placed on the swivel movable body. After that, it holds the in-flight conveyor that is supported by the return roller and circulates, and on the opposite side, it is equipped with a boom that (b) connects a frame with a counterweight at the tip.
It is a reclaimer's demineralization recovery device that remotely controls the ups and downs of the boom, the rotation of the wheel bucket, and the patrol of the in-flight conveyor to dispense the raw materials, and sends the raw materials in the raw material yard to the ground conveyor.
The swivel movable body is pivotally supported below the in-flight conveyor at one end by the end of the swivel movable body, and the other end abuts on the outer wall surface of the chute to collect the fallen ore, and the recovered ore fall is boomed. A reclaimer's demining recovery device characterized by being provided with a demining recovery plate that tilts in conjunction with the elevation of the conveyor and causes it to flow out to the work floor. The reclaimer fallen ore recovery device according to claim 1, wherein the cross section of the fallen ore recovery plate is gutter-shaped, and the width of the upper part of the tub is 1.2 times or more the width of the in-flight conveyor. .. The reclaimer fallen ore recovery device according to claim 1 or 2, wherein the other end of the fallen ore recovery plate is provided with an elastic plate that maintains contact while sliding with the outer wall surface of the chute. The reclaimer demining recovery device according to any one of claims 1 to 3, wherein the demining recovery plate is provided with a vibrator at the bottom. The reclaimer fallen ore recovery device according to any one of claims 1 to 4, wherein the fallen ore recovery plate tilts in a range equal to or greater than an angle exceeding the angle of repose of the raw material. The fallen ore recovery plate is connected to the boom by a long chain, and during the payout work, it does not tilt due to the elevation of the boom, and after the payout work is completed, the reclaimer runs and moves, and the boom moves the raw material pile. The reclaimer mine recovery device according to any one of claims 1 to 5, wherein when ascending, turning, or moving to an avoidable standby position, the reclaimer is pulled by the chain and tilts. The reclaimer fallen ore recovery device according to any one of claims 1 to 6, wherein the work floor is provided with a sending hole and a sending pipe for sending the accumulated fallen ore to a ground conveyor.

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