JP4352359B2 - Bulk carrier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bulk carrier for transporting bulk, which is an indeterminate solid cargo, in particular, even if the hull is damaged by grounding or collision, the inundation does not reach the entire ship, and therefore it is feared that it will sink. It is related to a bulk carrier without any.
[0002]
[Prior art]
Conventionally, as shown in FIG. 6 and FIG. 7, indefinite amounts of coal, iron ore, wood chips, limestone, grains, etc. loaded in a plurality of cargo compartments 21, 22, 23 arranged in the longitudinal direction of the hull 1 In order to unload the bulk 3 which is a solid cargo, the horizontally rotating wheel-type dispensers 41, 42, 43 arranged in the cavities 31, 32, 33 formed at the bottoms of the cargo chambers 21, 22, 23. Is reciprocated along the discharge grooves 61, 62, 63 formed in the bottom wall 51, 52, 53 of the cargo chambers 21, 22, 23 in the longitudinal direction of the hull, and loaded in the cargo chambers 21, 22, 23. Discharge the loose material 3 through the bulkheads 71, 72, 73 partitioning the cargo hold 1 into the cargo compartments 21, 22, 23, and onto the delivery conveyor 8 installed at the bottom of the ship. Feeding and landing conveyor 9 to wharf Rose was carrier is known which includes an automatic unloading system for unloading a predetermined location.
[0003]
And in the bulk carrier equipped with such an unloading system, each cargo compartment 21, by closing the conveyor penetration points 75, 76, 77 of the partition walls 71, 72, 73 with a waterproof door (not shown). 22 and 23, when the ship is damaged by the ground due to grounding or collision, the inundation will sink over the entire hull, and when the ship is damaged due to grounding or collision, For example, Japanese Patent Application Laid-Open No. 5-124576 discloses a bulk carrier that prevents the ship from sinking over the entire hull.
[0004]
[Problems to be solved by the invention]
However, in the bulk carrier for preventing sinking, the cargo compartments 21, 22, and 23 are independent from each other because the cargo compartments 21, 22, and 23 need to be watertight.
[0005]
Therefore, it is necessary to provide the wheel-type dispensers 41, 42, and 43 for each of the cargo compartments 21, 22, and 23, which increases the equipment cost. In addition, for example, in order to adjust the payout amount and balance the ship, it is necessary to operate each of the payers 41, 42, and 43 in relation to each other at the time of cargo handling. There are problems such as being complicated.
[0006]
The present invention has been made in order to solve the above-described problems. In a bulk carrier, which prevents flooding from sinking over the entire hull when the ship is damaged by grounding or a collision, As described above, it is not necessary to provide each of the cargo compartments 21, 22, and 23 with a wheel-type dispenser 41, 42, and 43. Therefore, it is intended to save equipment costs and operating funds and to promote efficiency of cargo handling fraud. It is.
[0007]
[Means for Solving the Problems]
In the present invention, a plurality of cargo bay formed partition the hold by the partition wall are arranged side by side to the hull longitudinal direction, along the payment Demizo formed in the bottom wall of the cargo hold to the hull longitudinal direction, the rotary dispensers projecting from the rotating wheel to the lower end of the dispensing device body having a drive unit back and forth travel, the loose material accommodated in the cargo compartment over the bottom through the respective partition wall from said payout groove In a bulk carrier ship equipped with a sinking device for dropping on the installed conveyor, and having a sinking prevention device that closes the conveyor penetration part of each bulkhead including the conveyor belt during voyage, The partition wall forming the chamber is provided with a dispenser passage opening, and a watertight door for opening and closing the dispenser passage opening along each partition wall is provided to be movable up and down, and the bottom Wherein below the watertight doors insertion groove of the watertight door with a loose material falling device to said dispensing conveyor to the lower is formed.
[0008]
Therefore, since it is only necessary to provide one common wheel-type dispenser that travels through each cargo compartment, the equipment cost does not increase, and the adjustment of the amount of dispensing at the time of cargo handling and the balance of the ship Adjustment is very easy.
[0009]
In particular, since the insertion groove of the watertight door is formed in the bottom wall, a watertight state can be formed on one side of the watertight door, and the watertight structure is simple and reliable.
[0010]
In addition, by providing a bulk material dropping device in the insertion groove of the watertight door, the bulk material discharged from the insertion groove when the bulk material is discharged is surely dropped onto the conveyor and the bulk material remaining in the insertion groove. Also make sure it drops onto the payout conveyor.
[0011]
Moreover, in the said means, each dispenser passage port can be reliably obstruct | occluded in a watertight state by providing the pushing device which provides pushing force to the said partition direction in each said watertight door.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. The same components as those in the conventional example will be described with the same reference numerals.
[0013]
1 to 5 show one of the preferred embodiments of the present invention, in which a hold 1 is partitioned by partition walls 71, 72, 73, 74, and coal, iron ore, wood chips, limestone, grains, etc. Freight chambers 21, 22, and 23 for loading bulk 3, which is an undefined solid cargo, are formed in each cargo chamber 21, 22, and 23 by a mountain-shaped roof member 311, 321, 331. Between these, voids 31, 32, and 33 are formed.
[0014]
Further, in the present embodiment, one dispensing machine 4 can reciprocate between the cavities 31, 32, 33 in the longitudinal direction of the hull in the bulkheads 72, 73 partitioning the cargo chambers 21, 22, 23. Convex dispenser passage ports 721 and 731 are respectively formed.
[0015]
That is, the pair of traveling rails 40 and 40 supported by the mountain-shaped roof members 311, 321, 331 forming the cavities 31, 32, 33 in the cargo compartments 21, 22, 23 are the discharger passage port 721, respectively. 731 is disposed between the cavities 31, 32, and 33. Along the traveling rails 40, 40, a rotary dispenser 4 having a single horizontally rotating wheel is disposed so as to be able to reciprocate through the dispenser passage ports 721,731.
[0016]
Further, another bulkhead 723, 733 having a dispenser passage port 722, 732 has a predetermined interval at the lower part of the side face of the bulkhead 72 on the cargo compartment 21 side and the bulkhead 73 side of the bulkhead 73. In addition, the dispenser passage ports 722 and 732 are arranged to communicate with the dispenser passage ports 721 and 731, respectively, and are substantially convex watertight in the gaps formed between the partition walls 722 and 72 and the partition walls 73 and 733. The frame 10 is attached in close contact with the partition wall 72 or the partition wall 73 through the watertight door frame 100.
[0017]
Around the watertight door frame 100 provided at the dispenser passage ports 721 and 731, a cross-sectional P-type watertight seal 11 formed of watertight rubber is attached along the opening edge, and each watertight frame 10 is provided. Is provided with a watertight door 12 that moves up and down along the watertight frame 10.
[0018]
In the present embodiment, the watertight doors 12 are a pair of screws disposed at both ends of a drive screw shaft 14 that is rotated by a variable speed electric motor 13 such as a Bayer type disposed in the upper horizontal frame 101 of the watertight door frame 100. Are opened and closed by rotating the electric motor 13 forward or backward to open and close the dispenser passage ports 722 and 732, and the watertight door 12 includes a drive source. A pressing device 17 including a worm jack 171 using a variable torque type electric motor 16 is provided.
[0019]
Note that when the watertight door 12 is lowered, the travel rails 40 and 40 that pass through the dispenser passage 721 (731) interfere with the lowering of the watertight door 12. Therefore, in this embodiment, the travel rail 40 is used. , 40 of the dispenser passage port 721 (731) is a separate body 401, one end of which is rotatably attached via a rotating shaft 402, and a motor cylinder 403 attached to an end on the back side. And the lower part of the watertight door 12 is opened and closed to ensure the running of the dispenser 4 and the lowering of the watertight door 12. Note that the number of wheels and the outer diameter of the dispenser 4 are running. Depending on conditions, a portion corresponding to the descending portion of the watertight door 12 in the traveling rails 40, 40 may be missing (not shown).
[0020]
In addition, the bottom of the ship receives the loose material 3 delivered by the dispenser 4 from the discharge grooves 61, 62, 63 formed in the bottom walls 51, 52, 53 and sends it to the upper deck. A payout conveyor 8 is provided through the partition walls 71, 72, 73. Further, the bottoms of the partition walls 71, 72, 73 close the through portions 75, 76, 77 of the delivery conveyor 8 including the delivery conveyor 8, for example, as a watertight door presented in Japanese Patent Laid-Open No. 5-124576. A sinking prevention device (not shown) is provided, and a landing conveyor 9 for unloading the bulk material 3 to a predetermined position on the wharf is provided on the ship.
[0021]
Furthermore, insertion grooves 54 and 55 into which the watertight door 12 is inserted when the watertight door 12 is lowered are formed in the bottom walls 51 and 52 below the watertight door 12. Below the insertion grooves 54, 55, there is provided a bulk material dropping device 5 comprising a pair of vibration feeders 56, 56 having a dropping port directed toward the delivery conveyor 8.
[0022]
In the present embodiment configured as described above, during the voyage, the sinking prevention device (not shown) is formed of the penetrating portions 75, 76, 77 of the discharge conveyor 8 in the ship bottom of the partition walls 71, 72, 73 including a watertight door. And the watertight door 12 is lowered to the insertion grooves 54 and 55 formed in the bottom walls 51 and 52, and the dispenser passage ports 722 and 732 formed in the partition walls 72 and 73 are closed in a watertight state ( In the state shown in FIG. 2, the cargo compartments 21, 22 and 23 form a watertight state independent of each other. Therefore, when the ship is damaged by the grounding or the collision, it is possible to prevent the inundation from sinking over the entire hull.
[0023]
In particular, in the present embodiment, the watertight door 12 is lowered to the insertion grooves 54 and 55 formed in the bottom walls 51 and 52, thereby ensuring a reliable watertight state with a simple watertight structure.
[0024]
In addition, a water-tight seal 11 having a P-shaped cross section formed of water-tight rubber is provided along the opening edge around the water-tight door frame 100 provided at the dispenser passage ports 721 and 731. Is provided with a pressing device 17 composed of a worm jack 171 using a variable-torque electric motor 16 as a drive source, so that a completely watertight state can be formed.
[0025]
After arriving at the destination port, a sinking prevention device (not shown) that closes the through portions 75, 76, 77 of the delivery conveyor 8 at the bottom of the partition walls 71, 72, 73 is released, and the partition wall 71 is released. , 72, 73, the through portions 75, 76, 77 of the discharge conveyor 8 are opened, and the pressing devices 17 are reversed to release the pressing force of the watertight door 12 to the discharging machine passage ports 721, 731. At the same time, the watertight door 12 is raised to expose the dispenser passage ports 721 and 731 (state shown in FIG. 5).
[0026]
The rotary dispenser 4 is passed through the dispenser passage ports 721, 722, 731, 732 along the traveling rails 40, 40 integrated by rotating the separate body 401 to the original position. As a result, the reciprocating travel between the cavities 31, 32, and 33 is continuously performed, and the bulk material 3 accommodated in each cargo compartment 21, 22, 23 is moved to the bottom wall 51 of each cargo compartment 21, 22, 23. feed to above the upper deck from payment Demizo 61, 62 and 63 formed in the 52 and 53 paid out on the payout conveyor 8 disposed over the bottom, the landing conveyor 9, automatically unloading a predetermined portion of the wharf .
[0027]
In this case, the loose material 3 as well as payment Demizo 61, 62 and 63 formed in the bottom wall 51, 52 and 53, but also paid out from the insertion groove 54, 55 watertight door 12 is inserted, the insertion groove 54 , 55 is dropped onto the discharge conveyor 8 via the bulk dropping device 5 comprising the vibration feeders 56, 56 disposed below the insertion grooves 54, 55, and the landing conveyor 9 Is unloaded.
[0028]
In the present embodiment, the vibration feeders 56 and 56 are used as the bulk material dropping device 5. However, at the time of normal payout, the bulk material 3 can be removed without requiring the vibration feeders 56 and 56 to be operated. Since the bulk material dropping device 5 can be a normal chute (not shown) instead of the vibration feeders 56 and 56 because it can be dropped onto the delivery conveyor 8, the angle of repose of the bulk material loaded is not particularly limited. It is effective to operate the vibration feeders 56 and 56 when the bulk material is large or when the bulk material remaining in the bulk material dropping device 5 is dropped after the completion of the payout operation.
[0029]
As described above, according to the present embodiment, it is possible to partition the cargo compartments 21, 22, and 23 in a completely watertight state, and the ship is damaged by the grounding or collision. Then, it is possible to prevent the water from sinking over the entire hold 1.
[0030]
Further, at the time of unloading, it is not necessary to provide a wheel type dispenser 4 for each of the cargo compartments 21, 22, 23, and a single dispenser 4 is reciprocated through each cargo compartment 21, 22, 23 for delivery. Therefore, it is possible to save equipment costs and working capital and promote efficiency of cargo handling fraud.
[0031]
Since the dispenser passage ports 721 and 731 formed in the partition walls 72 and 73 are opened and closed by raising and lowering the watertight door 12, for example, it is extremely less than when using a hinge type or rotary type watertight door. In particular, since each watertight door 12 is inserted into the insertion grooves 54 and 55 formed in the bottom walls 51 and 52 when lowered, that is, when closed, one side surface of the watertight door 12 is provided. In this case, a watertight state can be formed, and the watertight structure is simple and reliable.
[0032]
Further, since the raising and lowering and pressing of the watertight door 12 are driven by the electric motor 16, automation by remote control is easy. In particular, the electric motor 13 for raising and lowering the watertight door 12 is a variable rotation speed type. It is possible to shorten the ascending / descending time by operating the beginning or end of the ascending / descending operation slowly to stop it at an accurate position and increasing the operation speed during the operation.
[0033]
Furthermore, since the pressing device 17 provided in the watertight door 12 uses the variable-torque electric motor 16 as a drive source, the watertight door 12 can be pressed against the dispenser passage ports 721 and 731 with a desired pressure. While being able to form a watertight state reliably, the watertight seal 11 can be prevented from being deteriorated due to application of an excessive pressing force.
[0034]
In this embodiment, Japanese Patent Laid-Open No. 5-124576 is disclosed as a sinking prevention device comprising a watertight door provided at the through-holes 75, 76, 77 of the delivery conveyor 8 in the bottom of the partition walls 71, 72, 73. However, it is needless to say that the present invention can be implemented using other anti-sink devices.
[0035]
【The invention's effect】
As described above, according to the present invention, it is possible to achieve watertightness in a state where each cargo compartment is independent, and when the ship is damaged by the grounding or a collision during the voyage, the inundation is performed on the entire hull. Will not sink. In addition, since it is only necessary to provide one common wheel-type dispenser that runs through each cargo compartment, there is no increase in equipment costs, and it is extremely easy to adjust the amount to be dispensed during handling and the balance of the ship. Easy.
[0036]
In particular, since the watertight door is inserted into the insertion groove formed on the bottom wall when descending, the dispenser passage can be closed on one side of the watertight door to form a watertight state, and the watertight structure is simple. And sure.
[0037]
Moreover, by providing a pressing device that applies a pressing force to the watertight door in the direction of the partition wall, the dispenser passage can be reliably closed in a watertight state, and a speed variable type as a drive source for raising and lowering the watertight door. By using the electric motor, the time required for raising and lowering the watertight door can be shortened and the watertight door can be stopped at an accurate position.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view schematically showing a preferred embodiment of a bulk carrier of the present invention.
FIG. 2 is an enlarged cross-sectional view taken along line AA in FIG.
FIG. 3 is a plan view of FIG. 2;
4 is an enlarged vertical cross-sectional view of the main part of FIG.
5 is an enlarged cross-sectional view taken along line AA in a different state of FIG.
FIG. 6 is a longitudinal sectional view schematically showing a conventional example.
7 is an enlarged sectional view taken along line BB in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ship hold, 3 Bulk material, 4 Discharge machine, 5 Bulk material dropping device, 8 Discharge conveyor, 12 Watertight door, 13 Electric motor, 16 Electric motor, 17 Pushing device, 21, 22, 23 Cargo compartment, 51, 52, 53 Bottom wall , 61, 62, 63 payment Demizo, 54, 55 insertion groove, 71, 72, 73, 74 partition walls, 721, 731 dispensers passage opening

Claims (4)

A plurality of cargo bay formed partition the hold by the partition wall are arranged side by side to the hull longitudinal direction, along the payment Demizo formed in the bottom wall of the cargo hold to the hull longitudinal direction and a drive unit A discharge conveyor in which a rotary dispenser with a rotating wheel projecting at the lower end of the dispenser main body is reciprocated, and the bulk material accommodated in the cargo compartment passes through the partition walls from the discharge groove and is installed at the bottom of the ship. In a bulk carrier ship equipped with a discharge device for dropping on top and having a sinking prevention device for closing the conveyor penetration part of each bulkhead including the belt of the discharge conveyor during voyage, a cargo compartment is formed by partitioning the hold. The partition wall is provided with a dispenser passage opening, and a watertight door that opens and closes the dispenser passage opening along each partition wall is provided to be movable up and down, and the watertight of the bottom wall is provided. Roses product carriers, characterized in that the insertion groove of the watertight door with a loose material falling device to said dispensing conveyor to the lower is formed on the lower side.   The bulk carrier according to claim 1, wherein a pressing device that applies a pressing force to each of the watertight doors in the direction of the partition is provided.   The bulk carrier according to claim 1 or 2, wherein the bulk drop device provided in the insertion groove of each watertight door is a vibration feeder.   The bulk carrier according to claim 1 or 2, wherein the bulk drop device provided in the insertion groove of each watertight door is a chute.

Images