JP3225443B2 - Bulk carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to coal, limestone, iron and steel,
The present invention relates to a bulk carrier for loading and operating bulk materials such as wood chips in a cargo hold provided in a hold in a bulk state without packing, and particularly to a bulk carrier having a self-unloading system.

[0002]

2. Description of the Related Art Bulk carriers, such as coal, limestone, iron ore stone, and wood chips, are loaded into a cargo hold provided in a hold in a bulk state and transported. Has been conventionally provided.

[0003] This unloading system is, for example, as shown in FIG. 6, for accommodating bulk materials in a cargo compartment 3 formed by dividing a hold 1 by a plurality of bulkheads 2 at appropriate intervals in the front-rear direction. Of the cargo hold 4 is arranged with a space 5 between the cargo hold 4 and the bottom 1a, and the bulk material cut out from the plurality of outlets 4a arranged at the bottom of the cargo hold 4 is taken out along the outlet 4a. An endless belt conveyor, which is an endless belt conveyor disposed in the empty space 5, passes through the openings 6 formed in the bulkheads 2 sequentially, collects them at a predetermined position at the ship's end, conveys them to the ship, and drains them. It is carried out of the ship by the conveyor 8.

However, in the bulk carrier provided with the above-mentioned conventional unloading system, an opening 6 through which a cut-out conveyor 7 penetrates is formed in a bulkhead 2 that partitions the hold 1 in a front-rear direction. Therefore, there is a possibility that when the vehicle stranded or collided with another ship, the water from the damaged portion would sink through the opening 6 to the entire area of the hold 1.

Therefore, as shown in FIG. 7, the hold 1 is partitioned by a plurality of bulkheads 2 at appropriate intervals in the front-rear direction to form a plurality of watertight cargo compartments 3, and cargoes are stored in these cargo compartments 3. In addition to disposing the warehouses 4, each of the cargo conveyors 3, a collection conveyor 7 and a conveyor 9 for collecting and transporting bulk materials cut out from a plurality of outlets 4a arranged at the bottom of the cargo hold 4 to a ship. And a bulk carrier equipped with an unloading system of a type in which bulk materials conveyed on board are collected by a collecting conveyor 11 into a draining conveyor 8.

In this bulk carrier, since a plurality of watertight cargo compartments 3 are formed in the hold 1 in the front-rear direction, there is no fear that water from a damaged part will sink into the entire hold 1 and sink. However, a cut-out conveyor 7 and a transport conveyor 9 must be provided for each cargo compartment 3, and a collecting conveyor 10 extending from the bow to the stern must be provided on the ship.

[0007] Therefore, since the number of devices such as conveyors constituting the unloading system is extremely large, there is a problem that a large cost and labor are required in manufacturing, operation, and maintenance.

[0008]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is that a bulk carrier having a plurality of cargo compartments separated from each other in a watertight manner by a partition is safe, but a conveyor constituting an unloading system. The number of such devices is significantly increased, which is disadvantageous in terms of maintenance and economy.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a cargo hold is partitioned by a plurality of partitions at appropriate intervals in the front-rear direction to form a plurality of cargo compartments, and bulk cargo is accommodated in these cargo compartments. The cargo hold of the cargo hold is arranged with an empty space between the cargo hold and the bottom of the cargo hold, and an endless belt-type cutting-out conveyor that collects the bulk material taken out from the bottom of the cargo hold at a predetermined position on the bow or stern is provided. In a bulk carrier that is sequentially disposed through the openings formed in the partition walls and is disposed in the space, a door device that can be closed in a watertight manner with the belt interposed therebetween is provided in each of the openings. In the above configuration, the door device may include a first door body located above the outward path portion of the belt, a second door body located between the outward path section and the return path section, and a return path section. And a third door body located below the At least two of the doors can be moved up and down, and when closed, the opening is kept watertight with the belt interposed therebetween. In addition to the fact that flooding from the damaged area does not extend to the entire area of the hold and is safe, the number of devices is small,
The object of the invention is to provide a safe bulk carrier with a self-unloading system which is very labor and economically advantageous for maintenance and operation.

[0010]

[Function] During the voyage, each cargo compartment is made watertight by closing the opening through which the cut-out conveyor penetrates with the door device provided on each bulkhead with a belt in between, and the flooding occurs throughout the hold. Prevent spreading.

Further, at the time of unloading, the closing of the door device is released to open the opening, and the bulk material cut out from the cargo hold is transported through each partition by the cutting conveyor.

[0012]

Next, the present invention will be described in detail with reference to examples.

In the description, the same components as those of the conventional example are denoted by the same reference numerals.

FIGS. 1 to 5 show an embodiment of the present invention, in which a cargo hold 1 is partitioned by a plurality of bulkheads 2 at appropriate intervals in the front-rear direction, and a plurality of cargo compartments 3 are formed. A cargo hold 4 having an outlet 4a at its lower end toward the inner surface of the ship bottom 1a is provided with a vacant space 5 between the cargo hold 3 and the ship bottom 1a. And are arranged respectively.

The bulkhead 2 comprises a bottom 1a of the hold 1 and both side walls 1
b, a rectangular opening 6 having a predetermined size is formed at the center lower portion and is formed in a space 5.
At the stern, endless belt-type cutting-out conveyors 7 for collecting loose materials taken out from the bottom of the cargo hold 4 at a predetermined location on the stern and transporting the bulk material on board at the stern sequentially pass through the openings 6 formed in the bulkheads 2. It is arranged.

The opening 6 of each partition 2 is provided with a door device 12 which can be closed in a watertight manner with the forward portion 11a and the backward portion 11b of the belt 11 of the cut-out conveyor 7 interposed therebetween.

In the present embodiment, the door device 12 includes a first door body 13 located above the forward path portion 11a of the belt 11,
A second door 14 is located between the forward path 11a and the return path 11b, and a third door 15 is positioned below the return path 11b. Are their both end portions 13a, 13a, 14a, 14a, 1
5a, 15a are fitted and supported in watertight manner in vertical grooves 6a, 6a formed along both side surfaces 6a, 6a of the opening 6, respectively.

The first door 13 and the second door 14 are fitted in the vertical grooves 6a so as to be able to move up and down.
3 is a lifting device which can be immersed in a cavity 2a formed above the upper end surface 6c of the opening 6 when moved upward, and the upper end surface 13c is formed of, for example, an air cylinder provided in the cavity 2a. As shown in FIG. 3, the belt 11 is supported at the immersion position and forms a predetermined gap 6e between the belt 11 and the outward path portion 11a.

The second door body 14 is formed in a vertically extending through hole 1 formed at both side ends 13a, 13a of the first door body 13.
3b, 13b are fixed to the lower ends of suspension rods 17, 17 having a swelling portion 17a for retaining at the distal end slidably inserted into the first door body 13 as shown in FIG. Is in an upper position where it is immersed in the space 2a, the belt 11 is suspended between the forward path portion 11a and the return path portion 11b with predetermined gaps 6f and 6g, respectively, and the first door body 13 descends. Then, the suspended state is released and the second door body 14 descends.

The third door body 15 has a bottom surface 15a at the bottom 1a.
It is fixed to the inner surface in a watertight state, and has a vertical width in which a predetermined gap 6h is formed between the upper end surface 15b and the return path portion 11b of the belt 11.

The upper and lower end surfaces 13d, 14b, 14c and 15b of the doors 13, 14, 15 are opposed to each other when they are pressed against each other with the forward or backward portion 11a or 11b of the belt 11 interposed therebetween. A sealing member 18 made of, for example, a synthetic rubber material having elasticity so as to be watertight.
Is attached.

In the drawings, reference numeral 8 denotes a draining conveyor disposed on a ship, and reference numeral 19 denotes a forward portion 11 of the belt 11.
a, a support roller for supporting the return path portion 11b
Is a sealing member made of, for example, a synthetic rubber rod disposed along the vertical groove 6a.

In this embodiment, as in the conventional case, the door is taken out from the outlet 4a via a reclaimer (not shown) arranged at the bottom of each cargo hold 4 and the door is opened. Each cargo is collected at a predetermined location on the stern by a cut-out conveyor 7 disposed in the empty space 5 through the opening 6 sequentially, conveyed to the stern at the stern, and carried outboard by the draining conveyor 9. The bulk items stored in the storehouse 4 can be unloaded very efficiently.

At this time, as shown in FIG.
The first door body 13 is raised by the lifting device 16 so that the partition 2
When the belt 11 is immersed in the cavity 2a formed in the inside, the forward portion 11a of the belt 11 of the cutting conveyor 7 penetrating through the opening 6
In addition, there is an open state in which predetermined gaps 6e, 6f, 6g, and 6h are formed between the return path portion 11b and the doors 13, 14, and 15. Therefore, the cut-out conveyor 7 can transfer the bulk material taken out from the outlet 4a of each cargo hold 4 to the stern without being obstructed by the partition wall 2.

In this embodiment, if the first door 13 is lowered by the lifting device 16, the suspended state of the second door 14 is released by the first door 13 and its own weight is released. As shown in FIG. 5, the forward portion 11a and the backward portion 11b of the belt 11 and the doors 13, 14,
Gaps 6e, 6f, 6g, 6 formed between
h is closed, and the door body 13 and the door body 14 and the door body 14 and the door body 15 are pressed against each other with the forward path 11a and the return path 11b of the belt 11 sandwiched therebetween, and the opening 6 is closed in a watertight state.

Therefore, by closing the openings 6 of the bulkheads 2 and operating each cargo compartment 3 in a watertight state, when the ship stranded during navigation or collided with another ship, etc. Even if water enters the cargo bay 3 from the damaged part, the flooding stops only in the damaged cargo bay 3 and can be prevented from sinking over the entire area of the hold 1. Can be.

Further, when the opening 6 is closed, the belt 11 is sandwiched between the doors 13, 14, and 15 and only the pressure in the thickness direction is applied. In this embodiment, the doors 13, 14, 15
Since the mating member 18 having elasticity is provided so that the joining surfaces of the belts 11 are water-tight, the water-tightness is reliably maintained and the belt 11 is not adversely affected at all.

In this embodiment, the first door 13 and the second door 14 can be moved up and down, and the third door 15 located at the lower end is fixed to the boat bottom 1a. Since it is arranged at the upper position and fixed to the first door 13, the overall structure and arrangement of the shirting device 12 is easy, and the two doors 13,
14 can be driven and is economically excellent. For example, the second door 14 is fixed, and the first door 13 and the third door 15 can be moved up and down. Needless to say, other configurations such as a device can be provided.

Further, although the air cylinder which has a simple mechanism and which performs the raising and lowering operation quickly and smoothly is used as the raising and lowering device 16, another type of raising and lowering device generally known in the prior art may be used.

Further, in this embodiment, each of the doors 13, 14, 1
5 is provided with an elastic sealing member 18 at the joint surface between the first and second doors 13 and 14, and the second and third doors 14 and 15 are formed of a belt. When the seal member 18 is relatively hard or the belt 11 is thick, it is possible to directly contact the seal member 18 in advance when the forward portion 11a and the backward portion 11b are sandwiched. By forming the fitting grooves for the portion 11a and the return portion 11b, the belt 11 can be in direct watertight contact with the forward portion 11a and the return portion 11b.

[0031]

According to the present invention having the above construction, an endless belt-type cutting-out conveyor is provided, which is disposed so as to sequentially pass through openings formed in a partition for partitioning a hold into a plurality of cargo compartments. Since a door device is provided that can be closed water-tight across the forward and backward sections of each belt,
If the cargo compartments were operated in a watertight condition with the openings closed watertight with a belt in between, they would stranded during navigation or flooded into the cargo compartment from the damaged location when colliding with another ship. Even so, the inundation stops only in the damaged cargo compartment and can be prevented from sinking all over the hold, which is extremely safe.

Further, at the time of unloading, the closing of the door device is released to open the opening, and the bulk material cut out from the cargo hold can be transported through the bulkheads by the cutting-out conveyor. Work can be done,
In particular, since there is no need to provide a cut-out conveyor and, if necessary, a vertical conveyor for each cargo, it is extremely advantageous in terms of labor, economy, and installation, maintenance and operation.

Also, at least two doors can be moved up and down.
So that it is in an advantageous position that matches the characteristics of the hull structure, etc.
Providing a door lifting device, the hull
A door device that effectively uses a space can be provided.

[Brief description of the drawings]

FIG. 1 is a partially cut-away side view showing an embodiment of the present invention.

FIG. 2 is an enlarged partial view of FIG. 1;

FIG. 3 is a sectional view taken along line AA of FIG. 2 in a state where the door device is opened.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a sectional view taken along line AA of FIG. 2 in a state where the door device is closed.

FIG. 6 is a partially cut-away side view showing a conventional example.

FIG. 7 is a partially cut-away side view showing a different conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hold 1a Ship bottom 2 Partition wall 3 Cargo compartment 4 Cargo hold 5 Vacancy 6 Opening 7 Cut-out conveyor 11 Belt 11a Outbound section 11b Return section 12 Door device 13 Door body 14 Door body 15 Door body

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B63B 43/24 B63B 19/00 B63B 25/04 B63B 11/02 B63B 3/56 B63B 27/22

Claims (1)

(57) [Claims] The cargo hold is partitioned by a plurality of bulkheads at appropriate intervals in the front-rear direction to form a plurality of cargo compartments, and a cargo hold for storing bulk materials in these cargo compartments is provided between the cargo hold and the bottom of the ship. And each is arranged with an empty space,
An endless belt-type cut-out conveyor for collecting the bulk material taken out from the bottom of the cargo hold at a predetermined location on the bow or stern is sequentially provided through the openings formed in the bulkheads, and is disposed in the empty space. In the bulk carrier, at each of the openings,
A first door positioned above the outward path of the belt;
A second door body located between the road portion and the return portion;
A third door body located below the road portion;
At least two doors can be raised and lowered, and when closed
A bulk carrier comprising a door device for holding an opening in a watertight manner with the belt interposed therebetween .