JP2000038192A - Automatic cargo handling facilities for bulk carrying vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To device automatic cargo handling facilities for landing bulk which are simple in structure, easily maintainable and do continuous and efficient landing irrespective of the kind and state of bulk cargo and do not reduce in loading capability. SOLUTION: Bulk cargo is forcibly taken out from the bottoms of cargo warehouses 9 and 10 by a delivery machine 12 and placed on a first conveyor 21 along a ship bottom, these are then sent toward an upper deck by a second conveyor 24, and then landed to a dock by a third conveyor. The belt 22 of the first conveyor 21 is extended to be used as the carrier belt 25 of the second conveyor 24, and thereby the necessity of transferring the bulks is eliminated. A pressing belt 29 is placed along the inclined part 27, and then the bulk is carried without being slid down on a steel slope route.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic cargo handling facility for unloading bulk solid cargo, which is an amorphous solid cargo loaded in a cargo hold, to a wharf, and more particularly, to a bulk carrier installed on a bulk carrier without lowering its loading capacity. The present invention relates to an automatic cargo handling equipment having a simple structure capable of smoothly landing regardless of the type and condition of the equipment.

[0002]

2. Description of the Related Art Amorphous solid cargoes composed of ores, coal, limestone, wood chips, grains, cement, and other small lumps, granules, and powders, ie, bulk carriers for transporting bulk materials by sea, are mainly used in bulk carriers. Those navigating along coastal areas often have to unload and dock at wharfs with incomplete cargo handling facilities.
For this purpose, it is common practice to equip bulk carriers with automatic cargo handling equipment for unloading bulk materials loaded in cargo holds.

FIGS. 5 and 6 schematically show the above-mentioned bulk carrier. FIG. 5 shows the interior of a hold 72 extending from near the bow to near the stern of a hull 71. Are a plurality of cargo holds 73 separated from each other by partition walls.
However, in FIG. 6, a single cargo hold 73 is provided. The bulk material loaded in these cargo holds 73 is taken out from the bottom, sent to the bow or stern side by the first conveyor 74 extending in the longitudinal direction of the hull along the bottom of the ship, and then from the vicinity of the bottom of the ship to the second conveyor 75. By the third conveyor 76 installed on a boom 78 mounted on the upper deck so as to be able to swing up and down, and then landed at a predetermined location on the pier.

In the automatic cargo handling equipment shown in FIG. 5, a first conveyor 74 and a second conveyor 75 are formed by one continuous belt conveyor, and the second conveyor 75 has a gentle inclination such that loose objects do not slip back. To extend from near the bottom of the stern to near the upper deck of the stern. This is provided with a fourth conveyor 77 for transferring bulk materials from the second conveyor 75 to the third conveyor 76. At the bottom of each cargo hold 73, a large number of hopper-shaped discharge ports 79 are provided, which are opened and closed appropriately and vibrated as necessary to remove loose objects naturally or forcibly. An example of such an automatic cargo handling facility is described in Japanese Utility Model Laid-Open No. 61-174397.

The automatic cargo handling equipment shown in FIG. 6 is a vertical belt conveyor in which a second conveyor 75 is installed at a bow portion, and two belt conveyors which sandwich a bulk material and feed it from the vicinity of the bottom to the upper deck. One is formed by extending the first conveyor 74. The bottom of the cargo hold 73 is formed in a hopper shape that is long in the longitudinal direction of the hull, and while the dispenser 80 reciprocates in the longitudinal direction of the hull along the bottom surface, the rotating blades 81 rake the loose objects toward the center of rotation.
An example of such an automatic cargo handling facility is described in Japanese Utility Model Application Laid-Open No. 2-33196.

[0006]

The second conveyor 75 of the automatic loading and unloading equipment shown in FIG. 5 needs to have a considerably gentle slope in order to carry loose objects and transport them to the vicinity of the upper deck without slipping back. In addition, the horizontal distance is significantly increased with respect to the height difference, and the bottom of the cargo hold 73 near the stern must be gradually raised according to the inclination. For this reason, it is inevitable that the total capacity of the cargo hold 73 is reduced and the loading capacity is reduced.

On the other hand, the second conveyor 75 of the automatic cargo handling equipment shown in FIG. 6 can be installed without lowering the loading capacity. However, the vertical belt conveyor forming the second conveyor 75 is pressed and closed by a large number of rollers so that the side edges of the two conveyor belts sandwiching the bulk material are not opened by the weight or pressure of the bulk material. And the whole structure is complicated, and large power is required for driving. In addition, if the bulk material is a powder or a low-moisture material that does not easily adhere to the conveyor belt, it is difficult for the bulk material to be carried vertically upwards, and it is difficult to transport it because it accumulates at the bottom, and it overflows at the entrance and There is a concern that spills may occur, and that bulk items that can be carried are limited.

According to the present invention, there is provided a second conveyor for transporting bulk materials taken out from the bottom of a cargo hold by a dispensing machine to the vicinity of the bottom on the bow or stern side toward the upper deck for unloading. It is an object of the present invention to provide a bulk carrier with an automatic cargo handling facility capable of performing an efficient unloading operation without inconvenience that the bulk material has a complicated structure and the number of bulk materials that can be transported is limited.

[0009]

That is, in order to solve the above-mentioned problems, the present invention provides a belt conveyor for the first and second conveyors, wherein the second conveyor is located in front of or behind the cargo hold and is located near the bottom of the ship. A transport belt having an inclined portion extending toward the upper deck and carrying a bulk material, and a presser belt for sandwiching the bulk material with the inclined portion in cooperation with the transport belt, wherein the transport belt is provided by the first conveyor. The belt was formed to extend toward the upper deck.

As described above, the steep inclination can be achieved by sandwiching the bulk material between the two belts at the inclined portion, and the cargo hold can be installed without reducing the volume. In addition, the whole structure is simplified by the fact that it is sufficient to insert the loose objects so that they do not slip or spill, and that the belt of the first conveyor is extended to be a conveyor belt. Further, in conjunction with the removal of the bulk material from the cargo hold by the dispensing machine, the bulk material can be smoothly and continuously discharged efficiently regardless of the type and state of the bulk material.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view schematically showing a bulk carrier equipped with an automatic cargo handling equipment according to the present invention. 1
Inside the hold 2 extending from the vicinity of the bow to the vicinity of the stern of the ship, bulkheads 3 provided at both front and rear ends and an intermediate portion thereof
The two cargo holds 9, 10 divided into four front and rear compartments by a partition wall 4, 5 and a partition wall 6, 7 provided at an intermediate portion between the cargo compartments 9 and 10 are provided on the center of the hull by a central bulkhead 8 extending in the longitudinal direction of the hull. It is provided separately.

These cargo holds 9, 10 have hopper-shaped bottom walls, and dispensers 12, which reciprocate in the longitudinal direction of the hull over the entire lower end thereof, are provided. A first conveyor 21 consisting of a belt conveyor extending in the direction is laid.

The dispensing machine 12 is a widely known machine described in Japanese Utility Model Application Laid-Open No. 2-33196 and others.
By rotating the rotating blades 13 protruding downward on the flat bottom surface 15 of the bottom wall while reciprocating in the top triangular mountain-shaped cover body 14 penetrating the cargo holds 9 and 10, the cargo The bulk materials loaded in the warehouses 9 and 10 are raked sequentially from the lowest layer to the center of rotation, and the bottom 15
Is dropped on a belt 22 of a first conveyor 21 laid under the slit-shaped outlet provided in the first conveyor 21.

In such a dispensing machine 12, since the rotating blades 13 bite into the layer of loose material, forcibly scrape them, and forcibly guide them to the center of rotation, the rotating blades 13 are continuously rotated. This makes it possible to continuously remove bulk materials from the cargo holds 9 and 10 irrespective of their type and state at a time, thereby helping to improve the efficiency of landing operations.

The first conveyor 21 is laid along the bottom of the ship, corresponding to each cargo hold 9, 10 from the front on the bow side of the row to the rear on the stern side, penetrating the bulkheads 3, 4, 5;
The bulk material taken out by the dispensing machine 12 is sent rearward on the stern side.

Referring to FIG. 1, FIG. 2 and FIG.
In the stern-side space of the hold 2 formed at the rear of the ship, two mutually parallel ducts 23 extending upward from the vicinity of the bottom of the ship to above the upper deck are obliquely longitudinally cut.
The belt 22 extends through the partition 5 to the upper end inside each duct 23.

The second conveyor 24 is laid inside the duct 23, and a portion of the belt 22 extending inside the duct 23 forms a transport belt 25 of the second conveyor 24. An endless pressing belt 2 is provided inside the duct 23.
9 are laid. The holding belt 29 is attached to the conveyor belt 25 between a portion that transitions from the substantially horizontal entrance end 26 of the conveyor belt 25 to the inclined portion 27 and a front portion of the delivery end portion 28 that is the inverted portion of the upper end of the inclined portion 27. Extending along the upper surface thereof, in particular at the inclined portion 27 so as to sandwich the bulk material and travel together with the conveyor belt 25, the facing portion forming a bulk holding portion 30. I have.

Conveying belt 2 forming second conveyor 24
Reference numeral 5 denotes a feed path from the input end 26 to the output end 28, which is supported by the carrier roller 31 and is a return path after being inverted by the head pulley 32 of the output end 28.
3 is supported. On the other hand, the pressing belt 29 is supported by a carrier roller 36 and a return roller 37 between the head pulley 34 and the tail pulley 35.

Further, the inclined portion 27 of the transport belt 25 and the pressing portion 30 of the pressing belt 29 have their both side edges overlapped with each other so that no gap is formed by the pressing roller 38.

In the illustrated embodiment, the carrier belt 25 is formed into a trough shape with reference to FIG.
Utilizing that No. 1 is composed of a central roller 31a for supporting the central portion of the belt and an inclined roller 31b for supporting both side portions of the belt, the pressing roller 38 is pressed against the upper surfaces of both side edges of the pressing belt 29.

The pressing roller 38 is substantially parallel to the inclined roller 31b, and is arranged alternately with the carrier roller 31. As a result, the inclined portion 27 and the holding portion 30 form a flat tunnel-shaped enclosing space 39 opened toward the sending end portion 26 and the sending end portion 28, and the bulk material received as it is from the first conveyor 21 as it is. It is transported above the upper deck in the sealed state, and the duct 23 is
To the chute 40 formed at the upper end of the horn.

The inclination angle of the inclined portion 27 of the second conveyor 24 is determined by the height difference between the feeding end 26 and the sending end 28 and the horizontal distance.
With only this, the inclination angle is equal to or greater than the maximum angle at which the loose object slides down, and is generally equal to or greater than 20 degrees and does not reach 90 degrees.

The length of the second conveyor 24 provided with such an inclined portion 27 is shorter than that of a vertical belt conveyor for vertically transporting bulk materials, and the weight and pressure of the packed bulk materials are reduced by component forces. Therefore, the force for pushing and expanding the inclined portion 27 and the holding portion 30 is small, and even if the installation interval between the carrier roller 31 and the holding roller 38 is increased, the bulk material can be conveyed without spilling. In addition, even if the bulk material is powdery or hardly adherent to the belt, it is easily carried along because it is sandwiched by the presser belt 29 at the inclined portion 27, so that the bulk material overflows at the entrance end 26. Does not occur. Further, since the belt 22 of the first conveyor 21 and the transport belt 25 of the second conveyor 24 are the same belt, there is a concern that the bulk material of the first conveyor 21 is transferred to the second conveyor 24 as it is and spills around at the time of delivery. Is eliminated.

Furthermore, since the second conveyor 24 can be steeply inclined, the horizontal distance can be shortened to secure the volumes of the cargo holds 9, 10 and to be installed without lowering the loading capacity.

Furthermore, there is no fear of loose materials being transferred from the first conveyor 21 to the second conveyor 24 as they are, and there is no risk of spillage. Two conveyor 24
The occupant room, engine room, etc. can be installed while leaving the space required for the inspection work narrower or leaving the space necessary for inspection work.

Next, a chute 40 provided at the upper end of the two ducts 23 opens at both ends into a housing 41 constructed on the upper deck in a transverse direction of the hull.
A duct 42 extending toward the bow is connected to the center of the housing 41. Two orienting conveyors 49 and 50 each including a belt conveyor extending from the lower portion of the chute 40 to the central portion are installed in the housing 41, and a fourth conveyor 44 including the belt conveyor is oriented in the duct 42 with the feeding end oriented. The conveyors 49 and 50 are installed and installed below the feed ends of the conveyors. Further, a boom 45 is installed on the upper deck in a cantilever manner so as to be able to move up and down and turn, and a hood 46 provided on this boom 45 has a built-in third conveyor 48 made of a belt conveyor.

The bulk material discharged from each delivery end 28 of the second conveyor 24 passes through the chute 40 and is directed to the oriented conveyor 4.
It falls to the feeding end of 9, 50, is sent to the central part, falls to the feeding end of the fourth conveyor 44 for relay, and is put together. Next, it is discharged to the chute 43 formed at the tip of the duct 42 at the sending end, and falls to the sending end of the third conveyor 48 located at the base end of the boom 45. Then, the bulk material is discharged to the chute 47 formed at the tip of the hood 46 at the sending end of the third conveyor 48, and is put into a hopper installed at a predetermined location on the wharf to complete landing.

Each of the conveyors 21 and 2 for the hull 1
Depending on the layout of the 4, 48, 49, 50, in particular the location of the third conveyor 48, it may be possible to transfer directly from the oriented conveyors 49, 50 to the third conveyor 48 without using the fourth conveyor 44. In the case where the cargo holds 9, 10 are arranged in a single row instead of two rows in the longitudinal direction of the hull,
The bulk materials sent from the first conveyor 21 and the second conveyor 24 in a single row can be transferred to the third conveyor 48 as they are or via the fourth conveyor 44.

[0029]

As described above, the first conveyor along the bottom of the ship and the second conveyor connected thereto are forcibly taken out by the dispenser which reciprocates at the bottom of the bulk material loaded in the cargo hold. Transported above the upper deck without change, and then landed at a predetermined location on the wharf by a third conveyor. According to the present invention, it can be installed without lowering the loading capacity, has a simple structure and is easy to maintain, and can be continuously taken out and transported regardless of the type and condition of the bulk material. A good landing operation can be carried out.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

FIG. 2 is a schematic plan view of the embodiment of FIG.

FIG. 3 is an enlarged partial view of FIG. 1;

FIG. 4 is an enlarged sectional view taken along line AA of FIG. 3;

FIG. 5 is a schematic sectional view of a conventional example.

FIG. 6 is a schematic sectional view of another conventional example.

[Explanation of symbols]

1 Hull, 9,10 Cargo hold, 12 Payout machine, 1
3 rotating blades, 15 bottom surface, 21 first conveyor,
Reference Signs List 22 belt, 24 second conveyor, 25 conveyor belt, 27 inclined part, 29 holding belt, 48
Third conveyor,

Claims (1)

[Claims] 1. A dispensing machine having rotating blades for scraping bulk materials loaded in a cargo hold in a hull and reciprocating in a longitudinal direction of the hull along a bottom surface of the cargo hold, and the dispensing machine causes the cargo to be moved. A first conveyor that sends bulk materials removed from the bottom of the warehouse to the bow or stern side along the bottom of the ship, a second conveyor that sends bulk materials received from this to the upper deck, and bulk materials that are received from this. In an automatic cargo handling facility for a bulk carrier having a third conveyor for transferring goods to a predetermined location on a quay, the first conveyor and the second conveyor are belt conveyors, and the second conveyor is in front of the cargo hold. Alternatively, a conveyor belt which is located rearward and has an inclined portion extending from the vicinity of the bottom to the upper deck and on which bulk materials are placed, and a pressing belt which cooperates with the conveyor belt to sandwich the bulk material with the inclined portions. It consists of a preparative, the conveyor belt automatic handling equipment, characterized in that, being formed by extending toward the upper deck of the belt of the first conveyor.