JP2000043784A - Automatic cargo handling device for bulk carrying vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simply structured and easily maintained automatic cargo handling device for landing bulks, which is capable of continuously landing any kinds of bulks in any states and preventing a reduction in a loading capability. SOLUTION: Bulks are forcibly taken out from the bottoms of cargo holds 9 and 10 by a delivering machine 12, sent to a bow side or a stern side by a first conveyor 21 along a vessel bottom, then sent to the upper part of an upper deck in the center of a vessel body by a second conveyor 30 vertically crossing parts of the cargo holds 9 and 10 in an inclined manner, and landed to a dock from there by a third conveyor 47. The second conveyor 30 carries the bulks without sliding off them even on a steep slope by placing a pressing belt 35 along the inclined portion of a carrier belt 31.

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. 8 and 9 are diagrams schematically showing the bulk carrier described above. FIG. 8 shows the interior of a hold 72 extending from near the bow to near the stern of a hull 71. Are five cargo holds 73 separated from each other by bulkheads
However, in FIG. 9, 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. 8, 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.

In the automatic cargo handling equipment shown in FIG. 9, a second conveyor 75 is a vertical belt conveyor installed at a bow portion, and two belt conveyors are sandwiched between bulk materials and sent to the upper deck from near the bottom of the ship. 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 cargo handling equipment shown in FIG. 8 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. 9 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 by a dispenser to the vicinity of the bottom on the bow side or the stern side toward the upper deck for landing. It is a main object of the present invention to provide a bulk carrier with an automatic cargo handling facility capable of performing efficient unloading work without inconvenience that the bulk material has a complicated structure and the number of bulk materials that can be transported is limited.

[0009]

In order to solve the above-mentioned problems, the present invention relates to a belt conveyor, which is a belt conveyor and has a slope extending upward from the vicinity of the bottom of the cargo hold in front of or behind the cargo hold and above the upper deck. An endless transport belt having a portion and on which a bulk material is placed, and an endless pressing belt which cooperates with the transport belt to sandwich the bulk material with the inclined portion. Then, the second conveyor is configured such that a part of the cargo hold is inclined and traversed from the vicinity of the bottom of the ship toward the center of the hull to reach above the upper deck, and the vertical section of the cargo hold is wrapped in a duct.

As described above, the steep slope can be achieved by sandwiching the bulk material between the two belts at the inclined portion, so that the vertical distance of the cargo hold can be shortened, and at the same time, the second conveyor can be installed forward or rearward. Since it does not require a hold space, it can be installed without reducing the volume of the cargo hold. Also, the structure of the second conveyor can be simplified since it is sufficient to insert the loose objects so as not to slip or spill. Further, in conjunction with the removal of the bulk material from the cargo hold by the dispenser, the bulk material can be smoothly and continuously discharged efficiently regardless of the type and state of the bulk material.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIGS. 1 and 2 are a sectional view and a plan view schematically showing a bulk carrier equipped with an automatic cargo handling facility according to the present invention. FIG. 3 is a diagram showing a bulkhead 2 extending from near the bow to near the stern of a hull 1, and has partition walls 3, 4, 5 provided at both front and rear ends and at an intermediate portion thereof, and partition walls 6 provided at intermediate portions thereof. The two cargo holds 9 and 10 divided into four front and rear compartments by 7 are provided by being divided into right and left by a central partition wall 8 provided in the center of the hull and extending in the longitudinal direction of the hull.

These cargo holds 9, 10 have a hopper-shaped bottom wall, are provided with a dispenser 12 which reciprocates over substantially the entire lower end thereof, and extend in the longitudinal direction of the hull below the bottom wall. A first conveyor 21 composed of a belt conveyor is laid.

The dispensing machine 12 is a widely known machine described in Japanese Utility Model Application Laid-Open No. 2-33196 and others.
Referring mainly to FIG. 3, rotating vanes 13 projecting downward while reciprocating in a top triangular mountain-shaped cover body 14 formed through the interior of each cargo hold 9, 10 are provided with flat bottom surface 1 of the bottom wall.
5, the bulk materials loaded in the cargo holds 9 and 10 are sequentially raked from the lowermost layer to the center of rotation, and from the slit-shaped discharge port 16 provided on the bottom surface to the lower side. Is dropped on the first conveyor 21 laid on the first conveyor.

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 from the front of the bow to the rear of the stern, corresponding to each of the cargo holds 9, 10, and penetrates the bulkheads 3, 4, 5 along the bottom of the ship. The bulk material taken out by 12 is sent forward on the bow side.

Referring to FIG. 1, FIG. 2 and FIG. 5, a horizontal portion 24 extending toward the stern from the bottom portion at the forward end of the cargo holds 9, 10 in two rows, and A duct 23 comprising an oblique portion 25 extending upwardly of the upper deck and having a chute 26 at the tip is provided with a central partition 8.
Is divided into upper and lower parts. Near the bottom of the ship, the horizontal portion 24 opens toward the bow-side space of the hold 2, and the chute 26 opens downward above the upper deck at the center of the hull 1. Further, in the illustrated embodiment, the duct 23 obliquely crosses the two bow-side chambers of the two cargo holds 9 and 10 along the central partition 8.

The delivery end of the first conveyor 21 is located in the bow-side space of the hold 2, and the loose materials discharged from this end are sent toward the center line of the hull 1 by a relay conveyor 29 composed of a belt conveyor. , To the second conveyor 30.

The second conveyor 30 is a belt conveyor composed of a combination of two endless belts.
9, a delivery end 32 positioned below the chute 26 via an inclined portion 33 which enters the horizontal portion 24 of the duct 23 and passes through the inclined portion 25.
Endless transport belt 31 with the section leading to 4 as the transport path
And an endless pressing belt 35 extending along the conveyor belt 31 from a portion which is provided inside the duct 23 to transition to the inclined portion 33 and extends to a portion at the sending end 34.

The pressing belt 35 is opposed to the upper surface of the inclined portion 33 so as to sandwich the bulk material and travel integrally with the conveyor belt 31. The facing portion forms a bulk pressing portion 36. I have. The transport belt 31 is formed in a trough shape for placing loose objects on the transport path. For this purpose, a carrier roller 37 installed in this section supports a central roller 37a which supports a central portion of the belt and both side portions of the belt with reference to FIG. Inclined roller 3
7b. And the inclined part 3
3, a pressing roller 38 is provided in contact with the upper surface of both sides of the pressing portion 36 of the pressing belt 35, and the pressing roller 38 cooperates with the inclined roller 37 b to form the inclined portion 3.
3 and the side edges of the holding portion 36 are overlapped in close contact with each other to form a flat tunnel-shaped enclosing space 39, and the bulk material is conveyed to the delivery end 34 in an enclosing state.

The inclination angle of the inclined portion 33 of the second conveyor 30 is determined by the height difference between the feeding end 32 and the sending end 34 and the horizontal distance. The inclination angle is equal to or larger than the angle, and is generally equal to or larger than 20 degrees and does not reach 90 degrees.

The length of the second conveyor 30 having such an inclined portion 33 is shorter than that of a vertical belt conveyor for vertically transporting loose materials, and the weight and pressure of the sealed loose materials are reduced by a component. The inclined portion 33 and the holding portion 36
The force to push and spread the carrier roller 3 is small.
Even if the installation interval of the pressure roller 7 and the pressing roller 38 is increased, the bulk material can be conveyed without spilling. In addition, even if the bulk material is hard to adhere to the belt, even if the powder or the water content is low, the bulk material is easily entrained because it is sandwiched by the holding belt 35 at the inclined portion 33, and the bulk material overflows at the feeding end 32. Does not occur.

Further, since the second conveyor 30 can be steeply inclined, the horizontal portion 24 of the duct 23 can be formed.
In addition, by shortening a portion of the sloping portion 25 that traverses the cargo holds 9, 10, the volume of the cargo holds 9, 10 can be secured. Alternatively, there is no need to provide a hold space for installing the second conveyor in front of or behind the cargo holds 9, 10, so that this portion can be used as the cargo holds 9, 10 to increase the volume. That is, the second conveyor 30 can be installed without lowering the loading capacity.

Next, a base 41 is set on the upper deck at the center of the hull 1 on the center line, and a swivel 42
And the base end of the boom 43 is
2 are connected by a support shaft 44. As described above, the third conveyor 47 including the belt conveyor is attached to the boom 43 which is installed on the upper deck in a cantilever manner so as to be able to undulate and pivot.
The third conveyor 47 has a chute 4 at its tip.
6 is built in a hood 45.

The chute 26 opens downward above the swivel table 42, and the loose substances discharged from the delivery end 34 of the second conveyor 30 pass through the chute 26 and pass through the third conveyor 4.
Passed to 7. Therefore, by turning the boom 43 to the berthing side and raising and lowering it appropriately to position the tip on the hopper installed on the wharf, the cargo hold 9,
Ten looses will be landed.

The boom 43 can be turned left and right on a center line of the hull 1 from a standby position from the center to the stern. In addition, the bulk materials taken out from the bottoms of the cargo holds 9, 10 are removed by the first conveyor 21 along the bottom of the cargo holds 9, 9, 1.
0, and a part of the cargo holds 9, 10 is inclined by the second conveyor 30 to be sent to a third conveyor 47 having an inlet end in the center of the hull for landing. According to the embodiment, by arranging the center of the hull 1 next to the hopper installed on the wharf and berthing, the bulk can be discharged with a short transport path length. The power required for undulation and turning can be reduced as a short one. Further, the boom 43 can be swung to the berth side to land easily, regardless of whether the berth is berthed on either side, and the degree of freedom in maneuvering from entering the port to berthing is increased.

In the case where the cargo holds 9 and 10 are not two rows but two rows or a single chamber, the first conveyor 21 is arranged on the center line of the hull 1 and the second conveyor 3 is arranged.
The structure of cargo holds 9, 10, such as placing 0 on its side,
The layout of each of the conveyors 21 and 30 can be appropriately determined according to the shape. However, as shown in the illustrated embodiment, the cargo hold 9, 10 is arranged in two rows on the left and right, and the bulk material taken out from each row is transported above the upper deck by the second conveyor 30 on the hull center line. Machine 12
By controlling the location and amount of unloading of bulk materials from each cargo hold 9, 10 by the above, it is possible to perform a landing operation while maintaining a stable posture without disturbing the balance and tilting the hull 1. is there.

[0027]

As described above, the bulk material loaded in the cargo hold is forcibly taken out by the paying machine reciprocating at the bottom and sent to the bow or stern by the first conveyor along the bottom of the ship. Then, a part of the cargo hold shall be sent over the upper deck in the center of the hull by means of a second conveyor which has been inclined vertically, and discharged therefrom by a third conveyor. According to the present invention, the bulk material is conveyed along the inclined path in the enclosed state according to the present invention, it can be installed without lowering the loading capacity, and the conveying path length is short and the structure is simple, so that maintenance is easy, Also, regardless of the type and state of the bulk material, it can be continuously taken out and transported to perform an efficient landing operation.

[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 FIG.

FIG. 3 is an enlarged sectional view taken along the line AA of FIG. 1;

FIG. 4 is an enlarged sectional view taken along line BB of FIG. 1;

FIG. 5 is an enlarged partial view of FIG. 1;

FIG. 6 is an enlarged sectional view taken along line CC of FIG. 5;

FIG. 7 is a sectional view taken along line DD of FIG. 5;

FIG. 8 is a schematic sectional view of a conventional example.

FIG. 9 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,
23 Duct, 29 Relay Conveyor, 30 Second Conveyor, 31 Conveyor, 33 Inclined Part,
35 presser belt, 43 boom, 47 third conveyor,

Claims (3)

[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 is used to dispose the cargo. A first conveyor that sends bulk material removed from the bottom of the warehouse along the bottom to the bow or stern side, a second conveyor that sends bulk material received from it toward the upper deck, and bulk material that is received from this. An automatic cargo handling facility for a bulk carrier having a third conveyor for transferring objects to a predetermined location on a pier, wherein the second conveyor has an inclined portion extending from near the bottom of the ship to above the upper deck, and has an endless end for loading bulk objects. A conveyor belt, and an endless presser belt that sandwiches the bulk material in the inclined portion in cooperation with the conveyor belt, and the second conveyor is arranged near the ship bottom near the front or rear of the cargo hold. Together and toward the central portion of the body reaches above the upper deck inclined longitudinal part of the cargo hold, the cargo hold vertical portions is wrapped in the duct, the automatic handling equipment, characterized in that. 2. The cargo hold according to claim 1, wherein the cargo hold is provided in two rows on the left and right sides, each of which is provided with the payout machine and the first conveyor, and the second conveyor is arranged on a hull center line. Automatic cargo handling equipment for bulk carriers. 3. The automatic cargo handling equipment for a bulk carrier according to claim 1, wherein the third conveyor is installed at a central portion on the center line of the hull so as to be able to turn around a base end and be able to undulate.