JP2021186773A - Grizzly and reclaimer comprising grizzly - Google Patents

Abstract

To provide grizzly capable of easily changing a width of a sieve mesh of the grizzly and a reclaimer including the grizzly.SOLUTION: Grizzly 15 includes a fixed body 17 having a plurality of first grizzly bars 20 forming a first slit 27 and a movable body 18 having a plurality of second grizzly bars 22 partitioning the first slit 27 and being movable relative to the fixed body 17. This grizzly 15 can change a width of the sieve mesh 24 for sieving a bulky material by movement of the movable body 18 relative to the fixed body 17 and partitioning of the first slit 27 with the second grizzly bar 22. A reclaimer including the grizzly 15 can similarly change the width of the sieve mesh 24 of the grizzly 15.SELECTED DRAWING: Figure 5

Description

The present invention relates to a grizzly and a reclaimer comprising grizzly.

Grizzly is used to screen loose objects such as coal, ore, and earth and sand. By this grizzly, loose objects of a size suitable for the intended use are selected. This grizzly is installed at the slot for loose objects. This grizzly is attached to the loading port and constantly sifts the loaded loose objects. An example of such a grizzly is described in Patent Document 1.

Japanese Unexamined Patent Publication No. 7-2349

Grizzly is used for sieving roses of various properties. In this sieving, the size of sieving may be changed depending on the size, properties, use, etc. of the roses. In this case, it is necessary to replace it with a grid having a mesh width suitable for this size. However, the grizzly is attached to the inlet, and in general, the grizzly is often a heavy object, and it is not easy to attach and remove the grizzly.

It is an object of the present invention to provide a grizzly in which the width of the sieve mesh of the grizzly can be easily changed, and a reclaimer provided with the grizzly.

The grizzly according to the present invention sifts loose objects. The grizzly includes a fixed body having a plurality of first grizzly rivers forming the first slit, and a moving body provided with a plurality of second grizzly rivers for partitioning the first slit and movable with respect to the fixed body. In this grizzly, the moving body moves with respect to the fixed body, and the width of the mesh for sieving loose objects can be changed by partitioning the first slit with the second grizzly river.

The reclaimer according to the present invention includes a chute provided with a loading port into which loose objects are loaded and guides the loose objects loaded into the loading port, and the above-mentioned grizzly according to the present invention located at the loading port.

In the grizzly according to the present invention, the width of the sieve mesh can be changed by moving the moving body with respect to the fixed body. This grizzly can change the width of the sieve without replacing it. Similarly, the reclaimer equipped with this grizzly can change the width of the sieve mesh without replacing the grizzly.

FIG. 1 is a conceptual diagram showing a reclaimer including a grizzly according to an embodiment of the present invention. FIG. 2 is an explanatory diagram showing a usage state of the grizzly of FIG. 1. FIG. 3 is an explanatory diagram showing a usage state of grizzly as seen in the direction of arrow III in FIG. 4 (A) is a cross-sectional view taken along the line segment IVA-IVA of FIG. 3, and FIG. 4 (B) is a cross-sectional view taken along the line segment IVB-IVB of FIG. FIG. 5 is a cross-sectional view taken along the line segment VV of FIG. 4A. FIG. 6 is an explanatory diagram showing another usage state of the grizzly of FIG. 1.

Hereinafter, the present invention will be described in detail based on a preferred embodiment with reference to the drawings as appropriate.

FIG. 1 shows a reclaimer 2 including a grizzling device 1. The reclaimer 2 has a function of paying out a pile of loose objects in the yard. Here, for convenience of explanation, the rightward direction in the left-right direction of FIG. 1 is the front-back direction forward direction, and the direction perpendicular to the paper surface of FIG. 1 is the left-right direction.

The reclaimer 2 rotates in the vertical direction, including a traveling machine 3, a swivel table 4 that can rotate in the left-right direction, a swivel tower 5 that stands on the swivel table 4, and a control cabin 6 that has a driver's seat. It includes a possible boom 7, a bucket wheel device 8 for scraping loose objects, a boom conveyor 9 for transporting loose objects, and a chute 10 for guiding loose objects to the boom conveyor 9.

The swivel base 4 is supported by the traveling machine body 3 and can rotate about the rotation center S1 of FIG. 1 as a rotation axis. The boom 7 is supported by the swivel tower 5. The boom 7 is rotatable around its base end portion. A bucket foil device 8 is installed at the tip of the boom 7. The boom conveyor 9 is installed so as to straddle the swivel base 4 and the boom 7.

The bucket foil device 8 includes a circular foil 11 and a plurality of buckets 12 attached to the outer periphery of the foil 11. As shown in FIG. 2, the bucket foil device 8 further includes a drive device 13 for rotating the foil 11 and a frame 8A. Although not shown, the frame 8A is attached to the boom 7. The foil 11 and the drive 13 are supported by the frame 8A. The foil 11 can rotate with respect to the frame 8A with the rotation center S2 as the rotation axis. By rotating the foil 11, the bucket 12 can move in the circumferential direction of the foil 11. In this bucket foil device 8, as shown in FIG. 2, the rotation axis of the foil 11 is inclined with respect to the horizontal direction so that the bucket 12 moves above the chute 10.

The boom conveyor 9 includes a conveyor frame 9A, a plurality of rollers 9B, and a conveyor belt 9C. FIG. 2 shows a cross section orthogonal to the longitudinal direction of the conveyor belt 9C. The plurality of rollers 9B are supported by the conveyor frame 9A. Each of the plurality of rollers 9B is rotatable. Although not shown, the plurality of rollers 9B are arranged in the longitudinal direction of the conveyor belt 9C. The conveyor belt 9C is bridged over these rollers 9B.

The chute 10 includes a slot 10B surrounded by a guide wall 10A. Although not shown, the chute 10 is attached to the boom 7. The chute 10 may be attached to the frame 8A of the bucket foil device 8 or may be attached to the conveyor frame 9A. The chute 10 guides the loose objects loaded from the charging port 10B to the boom conveyor 9. The input port 10B may be any as long as it is a receiving port for loose objects, and is not limited to the one surrounded by the guide wall 10A.

The grizzling device 1 includes a grizzly frame 14, a grizzly 15 for sieving loose objects, and an auxiliary chute 16 for guiding a coarse object to be removed by the grizzly 15. The grizzly 15 and the auxiliary chute 16 are supported by the grizzly frame 14. The grizzly frame 14 is supported by the boom 7. The grizzly frame 14 may be attached to the frame 8A of the bucket foil device 8 together with the chute 10, or may be attached to the conveyor frame 9A.

As shown in FIG. 2, the grizzly 15 covers the insertion port 10B of the chute 10. The grizzly 15 is inclined and extends in the horizontal direction. The auxiliary chute 16 is located below in the direction in which the grizzly 15 is inclined and extends. The auxiliary chute 16 is inclined and extends like the grizzly 15.

As shown in FIG. 3, the grizzly 15 includes a fixed body 17, a moving body 18, and a fixture 19. The fixed body 17 includes a plurality of first grizzly rivers 20 arranged in parallel with each other, and a connecting bar 21 connecting these first grizzly rivers 20. The moving body 18 includes a plurality of second grid rivers 22 arranged in parallel with each other, and a connecting bar 23 connecting the second grid rivers 22.

In FIG. 3, a plurality of first grid rivers 20 and a plurality of second grid rivers 22 are arranged in parallel. The plurality of first grid rivers 20 and the plurality of second grid rivers 22 form a sieve mesh 24 as an elongated slit. The double-headed arrow Wa in FIG. 3 represents the width of the sieve mesh 24. The loose material is sieved into a size that passes through the mesh 24 and a coarse material that is larger than the size.

A fixture 19 is attached to the fixed body 17. Although not shown, the fixture 19 is mounted on the grizzly frame 14. As a result, the fixed body 17 is fixed to the grizzly frame 14. The grizzly 15 may be installed at a position covering the charging port 10B of the chute 10, and the fixed body 17 may be attached to the frame 8A, the conveyor frame 9A, or the chute 10 of the bucket foil device 8.

As shown in FIG. 4A, the first grizzly river 20 is attached to the connecting bar 21. This mounting method is not particularly limited, but is fixed by welding, for example. The first grid river 20 is formed with a through hole 25 through which the connecting bar 23 of the moving body 18 is passed. The through hole 25 is an example and is not limited to this. As long as the connecting bar 23 is movably passed through the first grid river 20, a groove may be formed in place of the through hole 25.

As shown in FIG. 4B, the second grid river 22 is attached to the connecting bar 23. This mounting method is not particularly limited, but is fixed by welding, for example. The second grid river 22 is formed with a through hole 26 through which the connecting bar 21 of the fixed body 17 is passed. The through hole 26 is an example like the through hole 25, and is not limited to this. The connecting bar 21 may be movably passed through the second grid river 22, and a groove may be formed in place of the through hole 26.

As shown in FIG. 5, the first grizzly rivers 20 are arranged in parallel by the connecting bars 21. A first slit 27, which is an elongated gap, is formed between the first grizzly river 20. The double-headed arrow W1 in FIG. 5 represents the width of the first slit 27. The first grizzly rivers 20 are arranged so as to form a first slit 27 having a constant width W1.

Further, the second grizzly river 22 is arranged in parallel by the connecting bar 23. A second slit 28, which is an elongated gap, is formed between the second grizzly river 22. The double-headed arrow W2 in FIG. 5 represents the width of the second slit 28. The second grid river 22 is arranged so as to form a second slit 28 having a constant width W2.

In FIG. 5, the stopper 29 included in the moving body 18 abuts on the fixed body 17, and the moving body 18 is positioned with respect to the fixed body 17. In this grizzly 15, the width W1 of the first slit 27 and the width W2 of the second slit 28 are the same size. In this grizzly 15, the second grizzly river 22 bisects the width W1 of the first slit 27. The second grid river 22 partitions the first slit 27 to form a mesh 24 having a width of Wa.

FIG. 6 shows a moving body 18 in which the stopper 29 is located away from the fixed body 17. The second grizzly river 22 of the moving body 18 is in contact with the first grizzly river 20 of the fixed body 17. The double-headed arrow Wb in FIG. 6 represents the width of the sieve mesh 24 in this used state. The plurality of first grid rivers 20 and the plurality of second grid rivers 22 form a sieve mesh 24 having a width Wb. This width Wb is larger than the width Wa of the sieve mesh 24 in the used state of FIG. In FIG. 6, the loose material is sieved into a large material having a size passing through the mesh 24 having a width Wb and a coarse material having a size larger than that.

Although not shown, the grizzling device 1 further includes a driving device for moving the moving body 18. This drive device is not particularly limited, and examples thereof include a winch having a manual handle. Further, as this drive device, an electric winch, an electric cylinder, a hydraulic cylinder, an air cylinder or the like may be used.

Here, a method of using the reclaimer 2 provided with the grizzly 15 will be described with reference to FIGS. 1 to 6.

The grizzly 15 forms a sieve mesh 24 with a width Wa, as shown in FIG. The swivel table 4 shown in FIG. 1 rotates in the left-right direction, the boom 7 rotates in the up-down direction, and the bucket foil device 8 is moved to a position for scraping a pile of loose objects. The foil 11 rotates and the bucket 12 scrapes loose objects.

The bucket 12 throws the scraped loose objects into the charging port 10B of the chute 10 shown in FIG. The loose material is sieved by the sieve mesh 24 having a width Wa by the grizzly 15 covering the charging port 10B. The loose material from which the coarse material has been removed by the grizzly 15 is guided to the conveyor belt 9C by the chute 10. The loose objects guided by the conveyor belt 9C are carried out from the tip of the boom 7 toward the swivel base 4 by the boom conveyor 9.

The moving body 18 is moved with respect to the fixed body 17 by the grizzly 15 in the used state of FIG. By moving the moving body 18, the grizzly 15 is put into the used state shown in FIG. The grizzly 15 forms a sieve mesh 24 with a width Wb, as shown in FIG.

The bucket foil device 8 shown in FIG. 1 is moved to a position for scraping a pile of loose objects. The foil 11 rotates and the bucket 12 scrapes loose objects. The bucket 12 throws the scraped loose objects into the charging port 10B of the chute 10 shown in FIG. The loose material is sieved by the sieve mesh 24 having a width Wb by the grizzly 15 covering the charging port 10B. The loose material from which the coarse material has been removed by the grizzly 15 is guided to the conveyor belt 9C by the chute 10. The loose objects guided by the conveyor belt 9C are carried out toward the swivel table 4 by the boom conveyor 9.

The grizzly 15 is a moving body having a fixed body 17 having a plurality of first grizzly rivers 20 forming the first slit 27 and a plurality of second grizzly rivers 22 for partitioning the first slit 27 and being movable with respect to the fixed body 17. Equipped with 18. In this grizzly 15, the width of the mesh 24 can be changed by moving the moving body 18 with respect to the fixed body 17 and partitioning the first slit 27 by the second grizzly river 22. The width of the sieve mesh 24 can be changed without removing and attaching the grizzly 15.

Since the grizzly 15 includes a connecting bar 23 for connecting the plurality of second grizzly rivers 22, the position of the second grizzly river 22 can be adjusted at once. The grizzly 15 does not require individual position adjustment of the second grizzly river 22. From this point of view, it is preferable that the grizzly 15 includes the connecting bar 23.

The first grizzly river 20 of the fixed body 17 includes a through hole 25 through which the connecting bar 23 of the moving body 18 is passed. By passing the connecting bar 23 through the through hole 25, the connecting bar 23 is prevented from protruding from the fixed body 17. The moving body 18 can minimize protrusion from the fixed body 17. As a result, the grizzly 15 can be installed in the installation space of the conventional grizzly in the same manner as the conventional grizzly. From this point of view, it is preferable that the first grid bar 20 is provided with a through hole 25 through which the connecting bar 23 is passed. The installation space of this grizzly 15 is small. The grizzly 15 can be easily retrofitted to existing equipment.

The through hole 25 of the fixed body 17 is an example, and the through hole 25 may be any as long as the moving body 18 can move with respect to the fixed body 17. The fixed body 17 may be provided with a groove through which the connecting bar 23 is passed, instead of the through hole 25.

Further, in the grizzly 15, the second grizzly river 22 of the moving body 18 includes a through hole 26 through which the connecting bar 21 of the fixed body 17 is passed. As a result, the connecting bar 21 is suppressed from protruding from the moving body 18. Similar to the fixed body 17, the moving body 18 may be formed with a groove through which the connecting bar 21 is passed, instead of the through hole 26.

In this grizzly 15, the connecting bar 23 is slidable in the through hole 25 of the fixed body 17. The fixed body 17 supports the moving body 18 so as to be movable in the width direction of the first slit 27. In this way, the moving body 18 can be installed together with the fixed body 17 by attaching the fixed body 17 by supporting the moving body 18. The grizzly 15 can be attached to and removed from the grizzly frame 14 by attaching and detaching the fixed body 17. From this point of view, it is preferable that the fixed body 17 movably supports the moving body 18 in the width direction of the first slit 27.

From the viewpoint of facilitating the movement of the moving body 18 with respect to the fixed body 17, the grizzly 15 may be provided with a bush fitted in the through hole 25. This bush may slip and support the connecting bar 23 passed through it.

Further, although not shown, the grizzly 15 fixes the moving body 18 to the fixed body 17 in each of the used state in which the sieve mesh 24 has a width Wa and the used state in which the sieve mesh 24 has a width Wb. It may be provided with a fixture. As a result, the misalignment of the moving body 18 can be suppressed. The fixture is not particularly limited, but for example, the moving body 18 can be fixed to the fixed body 17 by forming a pin hole penetrating the fixed body 17 and the moving body 18 and inserting a fixing pin into the pin hole. ..

Further, although not shown, the grizzly 15 may include a plurality of mobile bodies 18 that can be moved to the fixed body 17. For example, the grizzly 15 may include a fixed body 17 and a first moving body and a second moving body that are movable with respect to the fixed body 17. The width W1 of the first slit 27 of the fixed body 17 may be divided into three equal parts by the grizzly river included in the first moving body and the grizzly river provided in the second moving body. As described above, the number of the moving bodies 18 of the grizzly 15 may be two or more.

The reclaimer 2 includes a chute 10 that guides the loose material that has been thrown into the loading port 10B into which the loose material is loaded, and a grizzly 15 that is located at the loading port 10B and sifts the loose material. As described above, the reclaimer 2 can change the width of the sieve mesh 24 without removing and attaching the grizzly 15.

The reclaimer 2 further includes a bucket foil device 8 including a bucket 12 for charging loose objects into the charging port 10B and a foil 11 to which the bucket 12 is attached and rotated. Since the installation space of the grizzly 15 is small, it can be easily installed at a position close to the foil 11.

In this bucket foil device 8, the rotation axis of the foil 11 is inclined with respect to the horizontal direction. The foil 11 is inclined from the lower side to the upper side in a direction approaching the input port 10B. The bucket foil device 8 is particularly limited in space above. The grizzly 15 is preferably moved in the longitudinal direction of the boom conveyor 9. As a result, the grizzly 15 is brought closer to the foil 11. Such a grizzly 15 is particularly suitable for the reclaimer 2 provided with the bucket foil device 8.

Further, although not shown, the reclaimer 2 may be provided with a camera capable of photographing the input port 10B. The camera can remotely confirm that the moving body 18 is properly positioned with respect to the fixed body 17, the state of the deposits of the grizzly 15, and other abnormalities. Further, from the same viewpoint, the grizzling device 1 may include a sensor for detecting the position of the moving body 18.

The grizzling device 1 may use an electric winch, an electric cylinder, a hydraulic cylinder, an air cylinder, or the like as a drive device. By using such a drive device, the grizzly 15 can be remotely controlled. The remote-controlled grizzly device 1 does not require an operator to move to the periphery of the grizzly 15. The remotely controllable grizzly device 1 is suitable for a large transfer device such as a reclaimer 2.

Although not shown, the grizzling device 1 may include a load cell for detecting weight. For example, this load cell can detect the status of deposits on the grizzly 15. Specifically, the weight can be measured by this load cell, and it can be detected that the deposits of the grizzly 15 have become excessive.

1 ... Slit device 2 ... Reclaimer 8 ... Bucket foil device 10 ... Shoot 10B ... Input port 11 ... Foil 12 ... Bucket 15 ... Grizzly 17 ... Fixed body 18 ... Moving body 20 ... First grizzly river 21, 23 ... Connecting bar 22 ... Second grizzly river 24 ... Sieve 25, 26 ... Through hole 27 ... First slit 28・ ・ ・ Second slit

Claims (6)

It is a grizzly that sifts loose things.
A fixed body with a plurality of first grizzly rivers forming a first slit,
A plurality of second grizzly rivers for partitioning the first slit and a moving body movable with respect to the fixed body are provided.
The width of the mesh for sieving loose objects can be changed by moving the moving body with respect to the fixed body and partitioning the first slit with the second grizzly river. The grizzly according to claim 1, wherein the moving body comprises a connecting bar that connects a plurality of second grizzly rivers. The grizzly according to claim 2, wherein the first grizzly bar comprises a through hole or groove through which the connecting bar is passed. The grizzly according to any one of claims 1 to 3, wherein the fixed body movably supports the moving body in the width direction of the first slit. It is equipped with a chute that guides the roses that have been thrown into the slot, and a grizzly that is located at the slot and sifts the roses.
The grizzly comprises a fixed body having a plurality of first grizzly rivers forming the first slit and a moving body provided with a plurality of second grizzly rivers partitioning the first slit and movable with respect to the fixed body.
A reclaimer in which the width of the mesh for sieving loose objects can be changed by moving the moving body with respect to the fixed body and partitioning the first slit with the second grizzly river. Further provided with a bucket foil device including a bucket for throwing loose objects into the slot and a foil to which the bucket is attached and rotated.
The reclaimer according to claim 5, wherein the grizzly sifts loose objects that the bucket throws into the slot.

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