JP7453856B2 - Grizzly device and reclaimer equipped with a grizzly device - Google Patents

Description

Article 30, Paragraph 2 of the Patent Act applies Publication date: February 5, 2020 Publication location: Shunan Bulk Terminal Co., Ltd. (8 Harumi-cho, Shunan City, Yamaguchi Prefecture) Publisher Kawasaki Heavy Industries, Ltd.

The present invention relates to a grizzly device and a reclaimer equipped with a grizzly device.

Grizzly is used to sieve bulk materials such as coal, ore, and earth and sand. This grizzly machine selects bulk materials of a size suitable for the intended use. This grizzly is installed at the bulk material input port. This grizzly is attached to the input port and constantly sieves the loose materials that are input. An example of such a grizzly is described in Patent Document 1.

Japanese Patent Application Publication No. 7-2349

Grizzly is used to screen loose materials of various properties. Depending on the nature of the loose material, it may adhere to the grizzly to form a deposit. This deposit grows with long-term use of the grizzly. Grizzlies that have grown this deposit need to be removed. Removal of this deposit reduces the equipment operating rate.

On the other hand, depending on the properties of loose materials, there are some that do not require grizzly sieving. For such loose objects, removing the grizzly can reduce the adhesion of loose objects. However, the grizzly is attached to the input port, and the grizzly is generally heavy, so it is not easy to attach or remove it.

An object of the present invention is to provide a grizzly device that can easily switch between using and not using a grizzly, and a reclaimer equipped with this grizzly device.

The grizzly device according to the present invention comprises:
Grizzly sifting through loose grains,
The grizzly is provided with a moving device that moves the grizzly to a use position where the bulk materials are sifted at an inlet through which the bulk materials are fed, and to a standby position where the inlet is opened.

The reclaimer according to the present invention includes a chute that has an input port and guides loose materials input into the input port, and the above-described grizzly device according to the present invention.

The grizzly apparatus according to the present invention includes a moving device that moves the grizzly between a use position for sifting loose materials and a standby position for opening an input port. This grizzly device can be easily switched between using and not using the grizzly. A reclaimer equipped with this grizzly device can also be easily switched between using and not using the grizzly.

FIG. 1 is a conceptual diagram showing a reclaimer equipped with a grizzly device according to an embodiment of the present invention. FIG. 2 is an explanatory diagram showing the grizzly device of FIG. 1 together with other parts of the reclaimer. FIG. 3 is an explanatory diagram showing the grizzly apparatus seen in the direction of arrow III in FIG. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3. 5(A) is a sectional view taken along the line segment VA-VA in FIG. 3, and FIG. 5(B) is a sectional view taken along the line segment VA-VA in FIG. It is a diagram. FIG. 6 is a plan view of the grizzly apparatus of FIG. 1 with the grizzly in a standby position. FIG. 7 is a partially enlarged view taken in the direction of arrow VII in FIG. FIG. 8 is an explanatory diagram showing the grizzly device of FIG. 6 together with other parts of the reclaimer. FIG. 9 is an explanatory diagram showing a state in which a part of the grizzly device of FIG. 1 is used.

EMBODIMENT OF THE INVENTION Hereinafter, the present invention will be described in detail based on preferred embodiments, with appropriate reference to the drawings.

FIG. 1 shows a reclaimer 2 equipped with a grizzly device 1 according to the invention. This reclaimer 2 has a function of discharging bulk materials piled up in a yard. Here, for convenience of explanation, the right direction in the left-right direction in FIG. 1 is referred to as the forward direction in the front-rear direction, and the direction perpendicular to the paper surface of FIG. 1 is referred to as the left-right direction.

The reclaimer 2 includes a traveling aircraft body 3, a swivel base 4 that can rotate in the left-right direction, a swivel tower 5 that stands on the swivel base 4, and a control cabin 6 that includes a pilot's cockpit, and that rotates in the vertical direction. A boom 7, a bucket foil device 8 for scraping loose materials, a boom conveyor 9 for transporting loose materials from the tip of the boom 7 to the swivel table 4, and a chute 10 for guiding the loose materials to the boom conveyor 9. Be prepared.

The swivel base 4 is supported by the traveling body 3 and is rotatable about a rotation center S1 in FIG. 1 as a rotation axis. The boom 7 is supported by the swing tower 5. The boom 7 is rotatable around its base end. A bucket wheel device 8 is installed at the tip of this boom 7. A boom conveyor 9 is installed spanning 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 wheel device 8 further includes a drive machine 13 that rotates the wheel 11 and a frame 8A. Although not shown, the frame 8A is attached to the boom 7. The foil 11 and the drive machine 13 are supported by the frame 8A. The foil 11 is rotatable about the rotation center S2 with respect to the frame 8A. By rotating this foil 11, the bucket 12 can be moved in the circumferential direction of the foil 11. In this bucket wheel device 8, as shown in FIG. 2, the rotation axis of the wheel 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 perpendicular 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 spans these rollers 9B.

The chute 10 includes an input port 10B surrounded by a guide wall 10A. Although not shown, the chute 10 is attached to the boom 7. Note that 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. This chute 10 guides loose materials input from the input port 10B to the boom conveyor 9. Note that this input port 10B may be any opening for receiving bulk materials, and is not limited to one surrounded by the guide wall 10A.

The grizzly device 1 includes a grizzly frame 14, a grizzly 15 that sieves bulk materials, and an auxiliary chute 16 that guides coarse materials 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. Note that the grizzly frame 14 may be attached to the frame 8A of the bucket foil device 8, the conveyor frame 9A, or the chute 10 together with the chute 10.

In FIG. 2, the grizzly 15 is located in a use position covering the input port 10B of the chute 10. The grizzly 15 extends obliquely with respect to the horizontal direction. The auxiliary chute 16 is located below the direction in which the grizzly 15 extends. The auxiliary chute 16, like the grizzly 15, extends obliquely with respect to the horizontal direction.

As shown in FIG. 3, the grizzly bar 15 includes a plurality of grizzly bars 15A and a connecting bar 15B that connects the plurality of grizzly bars 15A. The plurality of Grizz Rivers 15A are arranged with their longitudinal directions parallel to each other. The respective Grizz Rivers 15A are arranged at intervals of a predetermined width. This interval of predetermined width forms the sieve mesh of the grizzly 15.

The grizzly apparatus 1 further includes a stopper 17 and a moving device 18. The moving device 18 includes a pair of rails 19, a plurality of sliders 20 that are movable with respect to the rails 19, a winch 21, a wire rope 22 as a rope, and a plurality of sheaves 23 that guide the wire rope 22. .

The stopper 17 includes a stopper body 24 and a plurality of supports 25 that support the stopper body 24. Although not shown, a plurality of supports 25 are attached to the grizzly frame 14. The stopper body 24 is supported by a plurality of supports 25. The grizzly grip 15 is positioned at its use position by coming into contact with the stopper body 24.

Although not shown, each rail 19 is supported by a grizzly frame 14. The rail 19 extends along the edge of the input port 10B of the chute 10. Each slider 20 is supported by a rail 19. The slider 20 is guided by and movable along the rail 19. A plurality of sliders 20 are attached to the grizzly 15. This slider 20 allows the grizzly 15 to move along the rail 19.

In this grizzly machine 1, the slider 20 is movable by sliding on the rail 19, but this slider 20 is merely an example and is not limited thereto. For example, the slider 20 may be provided with wheels, and the slider 20 may be guided by the rails 19 and movable by the wheels.

The winch 21 includes a rotatable drum 26 and a handle 27 for rotating the drum 26. The wire rope 22 is wound around a drum 26. The wire rope 22 can be wound around the drum 26 and let out by the rotation of the drum 26. The wire rope 22 let out from the drum 26 is connected to the grizzly wire 15. The wire rope 22 is stretched over a plurality of sheaves 23. The wire rope 22 can be guided by the sheave 23 between the grizzly wire 15 and the drum 26, and then wound and unwound.

FIG. 4 shows a cross section along line IV--IV in FIG. 3. In this moving device 18, a rail 19 is fixed to the grizzly frame 14. The slider 20 includes a groove 20A that engages with the rail 19. By engaging the rail 19 with this groove 20A, the slider 20 is supported so as to be movable along the rail 19. Furthermore, by engaging with this groove 20A, the grizzly grip 15 can be attached to and detached from the rail 19 together with the slider 20.

Note that the support 25 of the stopper 17 and the rail 19 were fixed to the grizzly frame 14, but they only need to be fixed around the input port 10B of the chute 10, and they may be attached to the frame 8A of the bucket foil device 8. Alternatively, it may be attached to the conveyor frame 9A. Further, the stopper 17 may have an alternative structure as long as it is capable of positioning the grizzly grip 15 at the use position.

FIG. 5(A) shows a cross section taken along line segment VA-VA in FIG. A groove 15C is formed at the tip of the grizzly bar 15A of the grizzly 15. In the use position of the grizzly grip 15, the stopper body 24 is engaged with the groove 15C. The bottom of the groove 15C and the stopper body 24 abut, and the grizzly grip 15 is positioned at the use position. Further, due to the engagement between the groove 15C and the stopper body 24, the vertical movement of the Grizz River 15A is restricted.

In FIG. 5(B), the grizzly 15 is located away from the stopper body 24. When this grizzly 15 separates from the stopper main body 24, the input port 10B of the chute 10 is opened. Note that the opening of the input port 10B referred to here only needs to be such that loose materials can be input into the input port 10B without going through the grizzly 15, and is not limited to the case where the grizzly 15 opens the entire input port 10B.

In FIG. 6, the grizzly 15 is in a standby position for opening the input port 10B. The grizzly bear 15 is positioned with the connecting bar 15B in contact with the ends of the pair of rails 19. In addition, in this grizzly fishing device 1, the pair of rails 19 function as a stopper, but this stopper may be provided separately. As shown in FIG. 5(B), the grizzly grizzly 15 in the standby position is separated from the stopper body 24.

FIG. 7 shows a partially enlarged view taken in the direction of arrow VII in FIG. As shown in FIG. 7, the moving device 18 further includes a stopper 28. This stopper 28 is in contact with the slider 20. In this moving device 18, the grizzly bear 15 in the standby position is positioned by both the contact between the connecting bar 15B and the rail 19 and the contact between the stopper 28 and the slider 20. Positioning may be performed by contacting only one side. Although the stopper 28 is attached to the race 19 here, the stopper 28 only needs to be fixed in position with respect to the rail 19, and may be attached to the grizzly frame 14.

FIG. 8 shows the grizzly bear 15 in the standby position of FIG. The grizzly grip 15 is located diagonally below the operating position shown in FIGS. 2 and 3. As shown in FIG. 6, the slider 20, together with the grizzly grip 15, is located diagonally downward with respect to the use position. The wire rope 22 is let out from the drum 26 to the extent that the grizzly wire 15 is located diagonally below.

Here, a method of using the reclaimer 2 will be explained with reference to FIGS. 1 to 8.

In the reclaimer 2 using the Grizzly 15, the wire rope 22 is wound around the winch 21, as shown in FIG. The grizzly 15 is in contact with the stopper body 24 of the stopper 17. The swivel table 4 shown in FIG. 1 rotates in the left-right direction, the boom 7 rotates in the vertical direction, and the bucket wheel device 8 is moved to a position for scraping off piled up bulk materials. The foil 11 rotates and the bucket 12 scrapes off loose materials.

The bucket 12 throws the scraped loose material into the inlet 10B of the chute 10 shown in FIG. The loose materials are sieved by the grizzly 15 that covers the input port 10B. The bulk material from which coarse materials have been removed by the grizzly 15 is guided to the conveyor belt 9C by the chute 10. The bulk items guided to the conveyor belt 9C are carried out toward the turning base 4 by the boom conveyor 9.

In the reclaimer 2 that does not use the grizzly wire 15, the wire rope 22 is let out from the winch 21, as shown in FIGS. 6 and 8. With respect to the use position shown in FIG. 3, the grizzly 15 is moving diagonally downward along the rail 19 under its own weight. The grizzly 15 opens the input port 10B of the chute 10. The swivel table 4 shown in FIG. 1 rotates in the left-right direction, the boom 7 rotates in the vertical direction, and the bucket wheel device 8 is moved to a position for scraping off piled up bulk materials. The foil 11 rotates and the bucket 12 scrapes off loose materials.

The bucket 12 throws the scraped loose material into the input port 10B of the chute 10. The loose items are guided to the conveyor belt 9C by the chute 10 without passing through the grizzly 15. The bulk items guided to the conveyor belt 9C are carried out toward the turning base 4 by the boom conveyor 9.

In this reclaimer 2, the grizzly apparatus 1 includes a moving device 18 that moves the grizzly 15 between a use position for sifting loose materials and a standby position for opening the input port 10B. Thereby, the grizzly device 1 can easily switch between using and not using the grizzly 15.

The moving device 18 includes a rail 19 extending in the moving direction of the grizzly 15 and a slider 20 movable along the rail 19. A grizzly ring 15 is attached to this slider 20. This moving device 18 can move the grizzly 15 by fixing a rail 19 around the input port 10B. Since this moving device 18 has a simple configuration, the installation space is small. This moving device 18 can be easily retrofitted to existing equipment.

In this grizzly fishing device 1, the rails 19 extend obliquely with respect to the horizontal direction. This allows the grizzly 15 to move diagonally downward under its own weight. From this point of view, it is preferable that the grizzly bear 15 moves in a direction oblique to the horizontal direction. Note that this grizzly apparatus 1 only needs to allow the grizzly 15 to move, and the grizzly 15 may move in the horizontal direction.

The moving device 18 includes a winch 21 having a drum 26 and a wire rope 22 wound around the drum 26. By winding the wire rope 22 around the drum 26 and letting it out, the grizzly 15 can be changed between a use position and a standby position. This grizzly apparatus 1 is equipped with a winch 21 so that even a heavy grizzly 15 can be easily moved.

Furthermore, this winch 21 can easily move the grizzly grizzly 15, which has moved diagonally downward due to its own weight, diagonally upward. Note that this moving device 18 only needs to be able to move the grizzly 15, and the drive device for moving the grizzly 15 is not limited to the winch 21.

Further, although this winch 21 includes a manual handle 27, electric power or other power may be used. By using electric power or other power, the grizzly device 1 can remotely control the grizzly 15. The grizzly device 1 that can be operated remotely does not require the operator to move around the grizzly 15. The grizzly device 1, which can be remotely controlled, is suitable for a large conveyance device such as a reclaimer 2.

This reclaimer 2 includes a bucket foil device 8 that includes a bucket 12 for charging bulk materials into an input port 10B, and a rotating wheel 11 to which the bucket 12 is attached. In this reclaimer 2, the grizzly 15 in the use position sieves the loose material that the bucket 12 throws into the slot 10B. This grizzly 15 can be easily installed in a position close to the foil 11.

In this bucket wheel device 8, the rotation axis of the wheel 11 is inclined with respect to the horizontal direction. This foil 11 is inclined from the bottom to the top so as to approach the input port 10B. This bucket foil device 8 has particularly large upper space constraints. This grizzly 15 is particularly suitable for this bucket foil device 8.

The moving device 18, which requires a small installation space and has a simple configuration, is suitable for this reclaimer 2. Furthermore, since the winch 21 moves the grizzly 15 using the wire rope 22, it is particularly suitable for the reclaimer 2 where installation space is limited.

In the use position of the grizzly grip 15, the stopper body 24 is engaged with the groove 15C. The bottom of the groove 15C and the stopper body 24 abut, and the grizzly grip 15 is positioned at the use position. The engagement between the groove 15C and the stopper body 24 restricts the vertical movement of the grizzly 15 due to the weight of loose objects. Although the grizzly 15 is movable, it can easily sieve even heavy bulk materials.

In this grizzly device 1, the grizzly 15 is attached by engaging the slider 20 with the rail 19. This grizzly 15 can be easily attached and detached. In this grizzly device 1, the grizzly 15 can be removed and deposits can be easily removed. Further, since the grizzly grip 15 can be replaced with a spare grizzly grip 15, a decrease in the equipment operating rate can be suppressed. Furthermore, depending on the properties of the bulk material, it may be easy to exchange it for another grizzly with a different sieve size.

Further, although not shown, the reclaimer 2 may be equipped with a camera capable of photographing the input port 10B. Using the camera, it is possible to remotely confirm that the grizzly 15 is properly positioned in the use position and the standby position, the state of attachments on the grizzly 15, and other abnormalities. Further, from the same viewpoint, the reclaimer 2 may include a sensor that detects whether the grizzly grizzly 15 is located at the use position or the standby position.

Although not shown, the grizzly device 1 may include a load cell that detects weight. For example, the load cell can detect the state of deposits on the grizzly bear 15. Specifically, the weight can be measured using this load cell, and it can be detected that the amount of deposits on the grizzly 15 has become excessive.

As shown in FIG. 9, this grizzly device 1 includes a box 29. As shown in FIG. This box 29 is provided below the auxiliary chute 16. In this box 29, coarse materials removed by the grizzly 15 are collected. Although not shown, the grizzly apparatus 1 may further include a large object load cell that detects the weight of the collected large objects.

1...Grizzly device 2...Reclaimer 8...Bucket foil device 9...Boom conveyor (conveyor)
10... Chute 10B... Inlet 11... Foil 12... Bucket 15... Grizzly 18... Moving device 19... Rail 20... Slider 21... Winch 22...・Wire rope (rope)
26... drum

Claims (6)

A grizzly who sifts loose goods,
comprising a moving device that moves the grizzly to a use position where the bulk materials are sieved through an input port into which the bulk materials are input, and a standby position where the input port is opened;
A grizzly apparatus , wherein a moving direction of the grizzly is inclined with respect to a horizontal direction . The moving device includes a rail extending in the moving direction of the grizzly, and a slider movable along the rail,
The grizzly device according to claim 1, wherein the grizzly is attached to the slider. The grizzly device according to claim 1 or 2 , wherein the grizzly extends obliquely with respect to the horizontal direction. The moving device includes a winch including a drum, and a rope wound around the drum,
The grizzly apparatus according to any one of claims 1 to 3, wherein the grizzly can be moved between the use position and the standby position by winding the rope around the drum and letting it out. A chute that includes an input port and guides bulk materials introduced into the input port, and a grizzly device that can sieve the bulk materials,
The grizzly apparatus includes a grizzly that sieves bulk materials, and a moving device that moves the grizzly between a use position for sifting bulk materials at the input port and a standby position for opening the input port,
A reclaimer , wherein the moving direction of the grizzly is inclined with respect to the horizontal direction . further comprising a bucket foil device comprising a bucket for throwing bulk materials into the input port, and a rotating wheel to which the bucket is attached,
6. The reclaimer according to claim 5, wherein the grizzly in the use position sieves loose material that the bucket inputs into the input port.

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