JP7726750B2 - Conveyor equipment - Google Patents

Description

The present invention relates to a conveyor device.

On ships transporting bulk materials such as coal or limestone, belt conveyors are sometimes used to unload bulk materials loaded in the hold. These belt conveyors are installed below the hold and lift bulk materials removed from the hold from a lower position to a higher position above the hold. Bulk materials on the belt conveyor may fall to the floor, for example, when being transferred from one conveyor belt to another. A known configuration includes a scraper to collect bulk materials that have fallen from the conveyor belt (see, for example, Patent Document 1).

Japanese Patent Application Publication No. 61-273411

In order to increase the bulk material loading capacity of holds on ships, it is preferable for the holds to be as large as possible. For this reason, the installation height of the belt conveyor below the hold is limited. Meanwhile, a recovery device must be installed below the belt conveyor to recover bulk material (fallen ore) that falls from the belt. Patent Document 1 thus does not disclose any problem or solution for installing a recovery device in a location with limited height inside a hold or the like.

In consideration of the above circumstances, the present invention aims to make it possible to install a mechanism for recovering transported objects, such as loose items, that have fallen from a belt, even in spaces where installation height is limited.

The present invention relates to the following conveyor device.

(1) A transport conveyor including a plurality of belts configured to transfer transported objects between the plurality of belts in a predetermined order;
a recovery conveyor for recovering the transported objects that have fallen from at least one of the belts,
The recovery conveyor is a conveyor device that includes a low-floor area located below a transfer area where the transported objects are transferred between the multiple belts, and that extends parallel to the floor surface on which the transport conveyor is installed, and a rising area that is installed at a location separated from the transfer area and rises from the floor surface.

(2) The conveyor device is installed inside a ship that transports the transported object,
The conveyor device according to (1), wherein the floor surface includes a ship bottom floor surface installed below the hold of the ship.

(3) One of the belts includes a parallel region parallel to the floor surface,
One of the belts advances in a predetermined traveling direction in the parallel region,
The low-floor area of the collection conveyor is disposed below the first belt and extends in the traveling direction,
The conveyor device according to (1) or (2), wherein the recovery conveyor includes a flight that directly faces the floor surface in the low-floor area.

(4) The elevator further includes an inclined plate that is installed below the rising area and receives the object to be transported by the flight from the floor plate,
The conveyor device according to (3), wherein an ejection section for the transported objects recovered by the recovery conveyor is formed at an upper end of the inclined plate.

(5) The transport conveyor includes a double belt that sandwiches and lifts the transported object,
a lifting area where the double belt lifts the transported object is formed in a curved shape when the double belt is viewed from the side;
The conveyor device according to any one of (1) to (4), wherein the rising region is disposed below the outer side of the curve of the lifting region.

This invention makes it possible to install a mechanism for recovering transported items, such as loose items, that have fallen from the belt, even in spaces with limited installation height.

FIG. 1 is a schematic plan view of a ship equipped with a conveyor device according to an embodiment of the present invention. FIG. 2 is a schematic, partially cross-sectional side view of the main part of the ship. FIG. 3 is a schematic plan view showing the configuration of the transfer conveyor and the collection conveyor of the conveyor device. 4A to 4D are schematic diagrams showing the basic configuration of the transfer conveyor and the basic configuration of the collection conveyor. Fig. 5(A) is a schematic partial cross-sectional side view of the main parts showing the first and second transport conveyors of the transport conveyor and the first and second recovery conveyors of the recovery conveyor, as viewed from the starboard side. Fig. 5(B) is an enlarged view of a portion of Fig. 5(A). Fig. 6(A) is a schematic partial cross-sectional side view of the main parts showing the first to third transport conveyors of the transport conveyor and the first to third recovery conveyors of the recovery conveyor, as seen from the bow side. Fig. 6(B) is an enlarged view of a part of Fig. 6(A). FIG. 7 is a partially cross-sectional side view of the main parts showing the first to third transport conveyors of the transport conveyor and the third and fourth recovery conveyors of the recovery conveyor, as viewed from the starboard side. FIG. 8 is an enlarged view of the stern side portion of FIG. FIG. 9 is an enlarged view of the bow side portion of FIG. FIG. 10 is a schematic partial cross-sectional side view of the main parts showing the first and third transfer conveyors and the third and fourth recovery conveyors, as viewed from the bow side. FIG. 11 is an enlarged view of a part of FIG.

The following describes an embodiment of the present invention with reference to the drawings.

Figure 1 is a schematic plan view of a ship 1 equipped with a conveyor device 3 according to one embodiment of the present invention. Figure 2 is a schematic, partially cross-sectional side view of the main parts of the ship 1. Figure 3 is a schematic plan view showing the configuration of the transport conveyor 10 and the recovery conveyor 50 of the conveyor device 3. Figure 4 is a schematic diagram showing the basic configuration of the transport conveyor 10 and the basic configuration of the recovery conveyor 50. Figure 4(A) is a side view of the basic configuration of the transport conveyor 10. Figure 4(B) is a side view of the basic configuration of the transport conveyor 10, which is a cross-sectional view viewed 90 degrees from the side shown in Figure 4(A). Figure 4(C) is a side view of the basic configuration of the transport conveyor 10. Figure 4(D) is a side view of the basic configuration of the transport conveyor 10, which is a cross-sectional view viewed 90 degrees from the side shown in Figure 4(C).

Figure 5(A) is a schematic, partially cross-sectional side view of the main parts showing the first transport conveyor 11 and second transport conveyor 12 of the transport conveyor 10 and the first recovery conveyor 51 and second recovery conveyor 52 of the recovery conveyor 50, as seen from the starboard side. Figure 5(B) is an enlarged view of a portion of Figure 5(A). Figure 6(A) is a schematic, partially cross-sectional side view of the main parts showing the first to third transport conveyors 11 to 13 of the transport conveyor 10 and the first to third recovery conveyors 53 of the recovery conveyor 50, as seen from the bow side. Figure 6(B) is an enlarged view of a portion of Figure 6(A).

Figure 7 is a partial cross-sectional side view of the main parts showing the first to third transfer conveyors 11 to 13 of the transfer conveyor 10 and the third recovery conveyor 53 and fourth recovery conveyor 54 of the recovery conveyor 50, as seen from the starboard side. Figure 8 is an enlarged view of the stern side of Figure 7. Figure 9 is an enlarged view of the bow side of Figure 8. Figure 10 is a schematic partial cross-sectional side view of the main parts showing the first transfer conveyor 11 and third transfer conveyor 13, and the third recovery conveyor 53 and fourth recovery conveyor 54, as seen from the bow side. Figure 11 is an enlarged view of a portion of Figure 10.

In this embodiment, the description will be based on the assumption that the vessel 1 is stationary on water with no waves and the vessel bottom floor 8, which will be described later, is in a horizontal position.

Referring to Figures 1 to 3, the ship 1 transports bulk materials 200 (numerous chunks of material) such as limestone, iron ore, and coal by sea.

The ship 1 has a hull 2 and a conveyor device 3 installed within the hull 2.

The hull 2 has a deck 4, a peripheral wall 5 that supports the deck 4, a bottom 6 that connects to the lower part of the peripheral wall 5, and a hold 7 located above the bottom 6.

The peripheral wall 5 is formed in a long, narrow shape from bow to stern in plan view. The bottom 6 forms the bottom of the hull 2. The bottom floor 8, which is the floor surface of the bottom 6, is the inner bottom plate of the hull 2 and is supported by the keel. The bottom floor 8 is, for example, the lowest floor surface within the hull 2 that can be reached by crew members. In this embodiment, the bottom floor 8 is a horizontal surface when the hull 2 is stationary. The bottom floor 8 is located below the hold 7 and is also the floor surface on which the conveyor device 3 is installed inside the ship. The hold 7 is installed above the bottom floor 8.

Bulk materials 200 are stored in the hold 7. Multiple hoppers 9 are arranged at the lower end of the hold 7. In this embodiment, the hoppers 9 are arranged on the starboard and port sides of the hull 2, lined up along the fore-and-aft direction Y of the hull 2 (the direction connecting the bow and stern). Each hopper 9 is equipped with an opening/closing door (not shown), which is opened when the bulk materials 200 are discharged from the hopper 9.

The bulk materials 200 discharged from the hopper 9 are carried outside the ship by the conveyor device 3. The conveyor device 3 is installed inside the ship 1.

The conveyor device 3 has a transport conveyor 10 for transporting bulk goods 200 outside the ship, and a recovery conveyor 50 for recovering bulk goods 200 that have fallen from the transport conveyor 10 and returning them to the transport conveyor 10.

[Configuration of the transport conveyor 10]
In this embodiment, the transport conveyor 10 is a belt conveyor installed inside a ship, and carries and transports the bulk goods 200. The transport conveyor 10 includes a plurality of belts 21, and is configured to transfer the bulk goods 200 between the plurality of belts 21 in a predetermined order.

The transport conveyor 10 includes a first transport conveyor 11 for transporting bulk materials 200 from the hopper 9 toward the center of the hull 2 in the longitudinal direction Y of the hull 2, a second transport conveyor 12 for transporting bulk materials 200 from the first transport conveyor 11 toward the center of the hull 2 in the transverse direction X of the hull 2, a third transport conveyor 13 for transporting bulk materials 200 from the second transport conveyor 12 above the deck 4, and a fourth transport conveyor 14 for transporting bulk materials 200 from the third transport conveyor 13 to onshore facilities outside the ship.

[Basic configuration of the transport conveyor 10]
4(A) and 4(B), each of the transport conveyors 11 to 14 has a transport unit 20. The transport unit 20 has a belt 21 on which the loose articles 200 are placed, a plurality of support rollers 22 that support the belt 21, and a transport conveyor motor 23 that drives the belt 21.

The belt 21 is an endless flexible belt. The support rollers 22 are arranged to stretch the belt 21 in an elongated shape. In the upper region 24 of the belt 21, where the outer periphery faces upward, the belt 21 is supported by three support rollers 22 so that it bends in a U-shape to hold the loose objects 200. Multiple sets of three support rollers 22 are arranged circumferentially around the belt 21, with these three support rollers 22 forming a set. In the lower region 25 of the belt 21, where the outer periphery faces downward, the belt 21 is supported by the support rollers 22 so that it maintains a flat posture. The conveyor motor 23 is, for example, an electric motor, and the belt 21 is rotated by the output rotation of the conveyor motor 23. The support rollers 22 and conveyor motor 23 are supported by a platform 26 on the ship's bottom floor 8 or a boom 28 (described below).

Of the conveyors 11-14, the third conveyor 13 has a double belt structure that includes a belt 21 and a pressure belt 31 (described below), and is configured to sandwich loose items 200 between the double belts and transport them upward.

[Overall configuration of the transport conveyor 10]
1 to 5, in this embodiment, four first transfer conveyors 11 are provided, and are arranged on the starboard and port sides of the front of the hull 2, and on the starboard and port sides of the rear of the hull 2. Each first transfer conveyor 11 extends with its longitudinal direction in the fore-and-aft direction Y. Each first transfer conveyor 11 is arranged below the hopper 9 in the hold 7. Each first transfer conveyor 11 includes a transfer unit 20. In the two front first transfer conveyors 11, the transfer direction D11 of the bulk goods 200 is from the bow to the stern, and the rear end of the first transfer conveyor 11 is the downstream end 11a of the transfer direction D11. In the two rear first transfer conveyors 11, the transfer direction D11 of the bulk goods 200 is from the stern to the bow, and the front end of the first transfer conveyor 11 is the downstream end 11a of the transfer direction D11.

The downstream end 11a of each first transport conveyor 11 rises upward as it approaches the center in the longitudinal direction Y, and the second transport conveyor 12, first recovery conveyor 51, and second recovery conveyor 52 are located below these downstream end portions 11a. In this way, by locating portions of each first transport conveyor 11 other than the downstream end portion 11a closer to the ship's bottom floor 8, the height of the hopper 9 in the corresponding location can be lowered, allowing for a larger bulk material storage capacity in the hold 7. Furthermore, space can be secured for locating the second transport conveyor 12, first recovery conveyor 51, second recovery conveyor 52, etc.

Two second transport conveyors 12 are provided, lined up on the left and right, and are each positioned below the space between the downstream ends 11a, 11a of the two first transport conveyors 11 lined up in a row. Each second transport conveyor 12 includes a transport unit 20. The starboard side second transport conveyor 12 extends from below the two front and rear first transport conveyors 11 on the starboard side toward the center of the hull 2 in the left-right direction X. The port side second transport conveyor 12 extends from below the two front and rear first transport conveyors 11 on the port side toward the center of the hull 2 in the left-right direction X. As shown in Figure 6, each second transport conveyor 12 is inclined so that it progresses upward as it approaches the center of the hull 2 in the left-right direction X. In each second transport conveyor 12, the transport direction D12 of the bulk goods 200 is from the left-right end toward the center of the hull 2, and the left-right center end of the second transport conveyor 12 is the downstream end 12a in the transport direction D12. The bulk goods 200 fall from between the downstream ends 12a, 12a of each second transport conveyor 12 onto the third transport conveyor 13.

As shown in Figures 2, 3, 6, and 7, in this embodiment, the third transport conveyor 13 is installed at the center of the hull 2 in the left-right direction X and the center of the hull 2 in the fore-and-aft direction Y. The third transport conveyor 13 has a transport unit 20, an endless, flexible pressure belt 31 arranged opposite the transport unit 20, and a plurality of support rollers 32 that support the pressure belt 31. In other words, the third transport conveyor 13 includes a double belt (belt 21 and pressure belt 31) that sandwiches and lifts the loose goods 200. The third transport conveyor 13 transports the loose goods 200 along the transport direction D13.

The belt 21 of the third conveyor 13 extends horizontally in the fore-and-aft direction Y below the downstream ends 12a, 12a of the second conveyor 12, and this horizontally extending region is a parallel region 13a that is parallel to the ship's bottom floor surface 8. The parallel region 13a extends forward from the rear end 13d of the third conveyor 13. The front end of the parallel region 13a is located aft from the second conveyor 12 and continues to the rising region 13b that rises upward. A pressure belt 31 is disposed in the rising region 13b of the belt 21 of the third conveyor 13 that rises upward along the conveying direction D13. The region of the pressure belt 31 that is arranged in an arc shape in side view is pressed by support rollers 32 toward the rising region 13b of the belt 21 of the third conveyor 13. This causes the rising region 13b and the pressing belt 31 to be in close contact at both ends in the width direction, forming a space between them to accommodate the loose items 200.

With this configuration, the third conveyor 13 forms a lifting area 33 for lifting the loose goods 200, with the rising area 13b and the pressure belt 31 acting as a double belt. The lifting area 33 is curved (arc-shaped) when the third conveyor 13 is viewed from the side (starboard or port side). As a result, the belt 21 of the third conveyor 13 conveys the loose goods 200 received from the second conveyor 12 forward, and then conveys them upward in cooperation with the pressure belt 31. At the top of the third conveyor 13, the loose goods 200 are released from the clamping position between the rising area 13b and the pressure belt 31, and the loose goods 200 fall onto the fourth conveyor 14.

The fourth transport conveyor 14 has a transport unit 20 and is supported by a boom 28 installed on the deck 4 of the hull 2. The boom 28 is configured to be rotatable, allowing the tip of the fourth transport conveyor 14 to be moved above a hopper or the like (not shown) at the landing facility. Bulk goods 200 are discharged from the fourth transport conveyor 14 to the hopper or the like at the landing facility.

[Configuration of the collection conveyor 50]

Referring to Figures 3 and 4, in this embodiment, the collection conveyor 50 is installed inside the ship. The collection conveyor 50 is a flight conveyor having flights (flat plates, scrapers) for scraping the bulk materials 200, and the flights push the bulk materials 200 out to transport them. The collection conveyor 50 is supported on the ship's bottom floor 8 by a platform or the like. Note that the collection conveyor 50 is not limited to a flight conveyor as long as it is configured to be able to transport the bulk materials 200. The collection conveyor 50 collects the bulk materials 200 that have fallen from the belts 21 of each transport conveyor 11-14. Note that in the present invention, the collection conveyor 50 is only required to be able to collect the bulk materials 200 that have fallen from at least the third transport conveyor 13.

The collection conveyor 50 includes multiple flight conveyors and is configured to transfer the bulk items 200 between the multiple flight conveyors in a predetermined order.

The recovery conveyor 50 comprises a first recovery conveyor 51 installed below the first transport conveyor 11; a second recovery conveyor 52 arranged below the second transport conveyor 12 and receiving bulk materials 200 from the first recovery conveyor 51; a third recovery conveyor 53 arranged below the third transport conveyor 13 and receiving bulk materials 200 from the second recovery conveyor 52; and a fourth recovery conveyor 54 arranged from the downstream end 53d of the third recovery conveyor 53 in the transport direction D13 of the bulk materials 200 to the first transport conveyor 11 on the port bow side, for example, and transporting bulk materials 200 from the third recovery conveyor 53 to the first transport conveyor 11.

[Basic configuration of the collection conveyor 50]
4(C) and 4(D), each collection conveyor 50 has a collection unit 60. The collection unit 60 has a plurality of flights 61 for pushing the loose articles 200, a pair of endless chains 62, 62 supporting each flight 61, a chain guide 63 supporting the chains 62, 62, and a collection conveyor motor 64 for driving the flights 61.

One or more chain guides 63 are arranged at both widthwise ends of the flight 61, along the conveying direction of the bulk materials 200 on the collection conveyor 50. A collection conveyor motor 64 is installed, for example, at one end of the collection conveyor 50 in the conveying direction of the bulk materials 200. The collection conveyor motor 64 is, for example, an electric motor with a sprocket attached to its output shaft. The output rotation of the collection conveyor motor 64 drives and rotates the chains 62, 62 connected to the collection conveyor motor 64. The flight 61 is a flat member extending between the pair of chains 62, 62 and is also called a scraper. Multiple flights 61 are arranged at equal intervals around the chain 62. The flights 61 push and move the bulk materials 200 placed below the flight 61. The flights 61 transport the bulk materials 200 in a lower region 66 located below the collection conveyor 50, extending downward from the pair of chains 62, 62.

[Overall configuration of the collection conveyor 50]
Referring to FIGS. 3 , 5A, and 5B, in this embodiment, a total of four first collection conveyors 51 are provided, extending in the front-to-rear direction Y. Each first collection conveyor 51 transports the bulk goods 200 along a transport direction D51 along the front-to-rear direction Y. In this embodiment, the first collection conveyors 51 are respectively disposed below the downstream ends 11a, 11a of the two first transport conveyors 11 on the starboard side, and below the downstream ends 11a, 11a of the two first transport conveyors 11 on the port side. This is because the bulk goods 200 mainly fall from the first transport conveyors 11 near the downstream ends 11a of each first transport conveyor 11. Each first collection conveyor 51 includes a collection unit 60. The width of the collection unit 60 in each first collection conveyor 51 is preferably set to be equal to or greater than the width of the first transport conveyor 11. In the front-rear direction Y, the length of each first collection conveyor 51 is shorter than the length of the first transport conveyor 11 .

Each first collection conveyor 51 is surrounded by a first basket 71 on its lower, right, and left sides. The first basket 71 is a component that receives the loose items 200 that have fallen, and extends along the longitudinal direction of the corresponding first collection conveyor 51. The gap between the first basket 71 and the flight 61 above and below is several millimeters to a dozen millimeters, allowing the loose items 200 on the first basket 71 to come into contact with the flight 61.

The loose items in the first basket 71 are transported to the second collection conveyor 52 by the operation of the flight 61 of the first collection conveyor 51. At the downstream ends 51a, 51a of each first collection conveyor 51, the loose items 200 fall onto the second collection conveyor 52.

With reference to Figures 3, 5(A), 6(A), and 6(B), the second recovery conveyors 52 are disposed below the first recovery conveyors 51, on the starboard and port sides, respectively. That is, two second recovery conveyors 52 are provided. Each second recovery conveyor 52 transports the bulk material 200 along a transport direction D52 along the left-right direction X. In this embodiment, each second recovery conveyor 52 is disposed in a horizontal position. The starboard-side second recovery conveyor 52 extends from below the downstream ends 51a, 51a of the two starboard-side first recovery conveyors 51, 51 toward the left-right center of the hull 2. Furthermore, the port-side second recovery conveyor 52 extends from below the downstream ends 51a, 51a of the two port-side first recovery conveyors 51, 51 toward the left-right center of the hull 2.

The downstream end 52a of each second recovery conveyor 52 in the transport direction D52 is located toward the center of the hull 2 in the left-right direction. Each second recovery conveyor 52 includes a recovery unit 60. At the center of the hull 2 in the left-right direction, a parallel region 13a of the third transfer conveyor 13 is located between the downstream ends 12a, 12a of the two second transfer conveyors 12, 12 and the downstream ends 52a, 52a of the two second recovery conveyors 52, 52. The downstream end 52a of each second recovery conveyor 52 is located below the parallel region 13a of the third transfer conveyor 13. It is preferable that the width of the recovery unit 60 in each second recovery conveyor 52 be set to be equal to or greater than the width of the second transfer conveyor 12.

The lower part of each second recovery conveyor 52 and the sides on the bow and stern sides are surrounded by second baskets 72. The second baskets 72 are components that receive the dropped loose objects 200 and extend along the conveying direction D52 of the second recovery conveyor 52. The vertical gap between the second baskets 72 and the flight 61 is several millimeters to several dozen millimeters, allowing the loose objects 200 on the second baskets 72 to come into contact with the flight 61. The loose objects on the second baskets 72 are transported toward the third recovery conveyor 53 (the center in the left-right direction) by the operation of the flight 61 of the second recovery conveyor 52. The loose objects 200 drop onto the third recovery conveyor 53 at the downstream end 52a of each second recovery conveyor 52.

Referring to Figures 3, 6(A), and 7, the third recovery conveyor 53 is positioned below the second recovery conveyor 52, in the center of the hull 2 in the left-right direction X, and is located directly below the third transport conveyor 13. The third recovery conveyor 53 includes a recovery unit 60. The third recovery conveyor 53 extends in the front-rear direction Y. It is preferable that the width of the recovery unit 60 on the third recovery conveyor 53 be set to be equal to or greater than the width of the third transport conveyor 13.

The third collection conveyor 53 has a low-floor area 53a and a rising area 53b.

The low-floor area 53a is located below the transfer area 80 where bulk materials 200 are transferred from the second transport conveyor 12 to the third transport conveyor 13, and extends parallel to the ship's bottom floor surface 8 on which the third recovery conveyor 53 is installed.

Referring to Figures 7 to 9, the low-floor area 53a is positioned horizontally and extends in the fore-and-aft direction Y, extending below and parallel to the parallel area 13b of the third transport conveyor 13 (horizontally). That is, the low-floor area 53a extends in the direction of travel of the parallel area 13b (fore-and-aft direction Y). In this embodiment, the low-floor area 53a extends forward from near below the rear end 13d of the third transport conveyor 13, and is located in an extremely narrow area between the lower area 25 of the belt 21 of the third transport conveyor 13 and the ship's bottom floor surface 8.

The boundary 53c between the low-floor area 53a and the rising area 53b is located below the lifting area 33. In the low-floor area 53a, the flight 61 of the third recovery conveyor 53 is directly opposed to the ship's bottom floor 8 in close proximity to the top and bottom. That is, the third recovery conveyor 53 includes a flight 61 that directly faces the ship's bottom floor 8 in the low-floor area 53a. The flight 61 of the third recovery conveyor 53 moves along the conveying direction D13 from the stern to the bow, thereby transporting loose material 200 that has fallen from each second recovery conveyor 52 and the third transport conveyor 13 onto the ship's bottom floor 8.

A third basket 73 for receiving loose objects 200 is provided in the low-floor area 53a. The third basket 73 is not located below the low-floor area 53b. The third basket 73 has side panels located on both the left and right sides of the low-floor area 53a, and these side panels prevent the loose objects 200 transported by the flight 61 from falling off the flight 61.

The rising area 53b is located at a distance from the transfer area 80 (see Figure 6(A)) and rises from the ship's bottom floor 8. The rising area 53b is continuous with the low-floor area 53a at the boundary 53c and extends diagonally upward so that its height from the ship's bottom floor 8 increases as it moves away from the low-floor area 53a (progressing forward). The rising area 53b is located below the curved outer side of the lifting area 33. In the rising area 53b, the height position of the flight 61 from the ship's bottom floor 8 increases as it moves forward. The rising area 53b is located below the curved outer portion 13e of the belt 21 of the third transport conveyor 13, where the vertical space between the rising area 53b and the ship's bottom floor 8 increases as it moves toward the bow. The rising area 53b is surrounded below and on both the front and rear sides by the fourth basket 74.

The fourth basket 74 is a member for lifting bulk materials 200 transported on the vessel's bottom floor surface 8 in the low-floor area 53a, and extends along the conveying direction D53. The lower part of the fourth basket 74 includes an inclined plate 74a. The inclined plate 74a is installed at the bottom of the rising area 53b and receives bulk materials 200 transported by the flight 61 from the vessel's bottom floor surface 8. The lower end of the inclined plate 74a is continuous with the vessel's bottom floor surface 8. The gap between the inclined plate 74a and the flight 61 is approximately several millimeters to several tens of millimeters, allowing the bulk materials 200 in the fourth basket 74 to come into contact with the flight 61. The fourth basket 74 is disposed over substantially the entire conveying direction D53 in the rising area 53b, and the bulk materials in the fourth basket 74 are transported toward the fourth collection conveyor 54 (forward) by the operation of the flight 61 of the third collection conveyor 53.

At the third recovery conveyor 53, the loose items 200 fall onto the fourth recovery conveyor 54 at the downstream end 53d in the conveying direction D53. That is, a discharge section 53e for the loose items 200 recovered by the third recovery conveyor 53 is formed at the upper end of the inclined plate 74a.

Referring to Figures 10 and 11, a funnel-shaped ore dropping chute 81 is disposed above the rising region 53b of the third recovery conveyor 53. The ore dropping chute 81 is disposed below the curved outer portion 13e of the third transport conveyor 13, and guides the loose material 200 that has fallen from the belt 21 of the third transport conveyor 13 to the rising region 53b of the third recovery conveyor 53.

The fourth recovery conveyor 54 extends from the center of the hull 2 in the left-right direction X, for example, toward the port side, below the downstream end 53d of the third recovery conveyor 53. The fourth recovery conveyor 54 extends horizontally in the left-right direction X below the downstream end 53d, and rises from the bottom floor 8 at a position further to the port side from the downstream end 53d. This rising portion is arranged, for example, in an S-shape when viewed from the fore-aft direction Y. The fourth recovery conveyor 54 includes a recovery unit 60. The fourth recovery conveyor 54 is surrounded by a fifth basket 75 below and on both sides of the bow and stern. The fifth basket 75 is a member that receives bulk materials 200 and extends along the conveying direction D54 of the bulk materials 200 on the fourth recovery conveyor 54. The gap between the fifth basket 75 and the flight 61 is approximately several millimeters to several tens of millimeters above and below, allowing the loose items 200 on the fifth basket 75 to come into contact with the flight 61.

Fifth baskets 75 are arranged over almost the entire area of the fourth recovery conveyor 54 in the conveying direction D54. Bulk objects in the fifth baskets 75 are transported, for example, to the first transfer conveyor 11 (111) on the port bow side by the operation of the flight 61 of the fourth recovery conveyor 54. The downstream end 54a of the fourth recovery conveyor 54 in the conveying direction D54 is located on the belt 21 of the first transfer conveyor 11 (111) on the port bow side, and the bulk objects 200 fall onto the belt 21 of the first transfer conveyor 11 at this downstream end 54a. As a result, the bulk objects 200 recovered by the recovery conveyor 50 are returned to the first transfer conveyor 11.

The fourth recovery conveyor 54 may also transport the loose items 200 to another first transport conveyor 11, such as the first transport conveyor 11 (112) on the port front side.

As described above, in this embodiment, the low-floor area 53a of the third recovery conveyor 53 is located below the transfer area 80 where the bulk materials 200 are transferred from the second transport conveyor 12 to the third transport conveyor 13, and extends parallel to the ship's bottom floor surface 8 on which the third recovery conveyor 53 is installed. Furthermore, the rising area 53b of the third recovery conveyor 53 rises from the ship's bottom floor surface 8 at a location separated from the transfer area 80. With this configuration, the height of the conveyor device 3 is bulky in the transfer area 80 for the bulk materials 200. Specifically, as shown in FIG. 6(A), in the transfer area 80, the downstream end 12a of the second transport conveyor 12, the parallel area 13a of the third transport conveyor 13, the downstream end 52a of the second recovery conveyor 52, and the third recovery conveyor 53 are aligned vertically. In this way, the low-floor area 53a of the third recovery conveyor 53 is located in a bulky location, and the rising area 53b is located in a location with ample height, away from the delivery area 80. This allows the bulk material 200 to be transported to the fourth recovery conveyor 54 in the rising area 53b. Therefore, the third recovery conveyor for recovering ore can be installed below the narrow delivery area 80, which has significant height restrictions.

In particular, in this embodiment, the installation height of the conveyor device 3 below the hold 7 is limited in order to increase the capacity of the hold 7. Given this limitation, the ship's bottom floor 8 on which the conveyor device 3 is installed is used as the bottom plate casing for the third recovery conveyor 53, which is a flight conveyor. This allows the height of the third recovery conveyor 53 to be kept low.

More specifically, the flight 61 of the third recovery conveyor 53 directly faces the vessel bottom floor surface 8 in the low-floor area 53a. This configuration allows the vessel bottom floor surface 8 to be effectively used as the bottom plate casing for the third recovery conveyor. This allows the height of the third recovery conveyor 53 to be lowered.

Furthermore, according to this embodiment, with regard to the third recovery conveyor 53, the inclined plate 74a is installed at the bottom of the rising region 53b and receives the bulk materials 200 transported by the flight 61 from the ship's bottom floor surface 8. A discharge section 53e for the bulk materials 200 is formed at the upper end of the inclined plate 74a. With this configuration, the bulk materials 200 recovered by the third recovery conveyor 53 can be handed over to the fourth recovery conveyor 54 in the rising region 53b, which has ample height.

In addition, according to this embodiment, the lifting area 33 where the double belts 21, 31 of the third transport conveyor 13 lift the bulk goods 200 is curved when the double belts 21, 31 are viewed from the side, and the rising area 53b of the third recovery conveyor 53 is located below the outer curve of the lifting area 33. With this configuration, the third recovery conveyor 53 can be raised below a location where there is sufficient height on the outer side of the double belts 21, 31, making effective use of the space near the ship's bottom floor 8.

The above describes an embodiment of the present invention. However, the present invention is not limited to the above embodiment. The present invention can be modified in various ways within the scope of the claims.

In the above embodiment, the first to fourth transport conveyors 11 to 14 are used. However, this is not necessarily the case. At least one of the first transport conveyor 11 and the second transport conveyor 12 may be omitted. Bulk items 200 from the hopper 9 may simply be transferred from the third transport conveyor 13 to the fourth transport conveyor 14.

Furthermore, in the above-described embodiment, the conveyor device 3 is described as being installed on the ship's bottom floor 8. However, this does not have to be the case. The conveyor device 3 may also be installed on a structure other than a ship.

This invention can be widely applied as a conveyor device.

1 Ship 3 Conveyor device 7 Hold 8 Ship bottom floor 11 to 14 Transport conveyor 13a Parallel area 21 Belt 33 Lifting area 51 to 54 Recovery conveyor 53a Low floor area 53b Rising area 53e Discharge section 61 Flight 74a Inclined plate 80 Delivery area 200 Bulk object (transported object)

Claims (4)

a transport conveyor including a plurality of belts configured to transfer transported objects between the plurality of belts in a predetermined order;
a recovery conveyor for recovering the transported objects that have fallen from at least one of the belts,
the recovery conveyor includes a low-floor area disposed below a transfer area where the transported objects are transferred between the plurality of belts, the low-floor area extending parallel to a floor surface on which the transport conveyor is installed, and a rising area disposed at a location separated from the transfer area and rising from the floor surface ;
One of the belts includes a parallel region parallel to the floor surface,
One of the belts advances in a predetermined traveling direction in the parallel region,
The low-floor area of the collection conveyor is disposed below the first belt and extends in the traveling direction,
The collection conveyor includes a flight directly facing the floor surface in the low-floor region . the conveyor device is installed inside a ship that transports the transported object,
2. The conveyor apparatus according to claim 1, wherein the floor surface includes a ship bottom floor surface installed below a hold of the ship. an inclined plate disposed below the rising area and receiving the object to be transported by the flight from the floor surface ;
2. The conveyor device according to claim 1 , wherein an upper end of the inclined plate is formed with a discharge portion for the transported objects recovered by the recovery conveyor. The transport conveyor includes a double belt that sandwiches and lifts the object to be transported,
a lifting area where the double belt lifts the transported object is formed in a curved shape when the double belt is viewed from the side;
The conveyor device according to any one of claims 1 to 3 , wherein the rising region is disposed below the outer side of the curve of the lifting region.