JP4552167B2 - Waterproof door device for bulk carrier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bulk carrier ship that transports bulk, which is an irregularly shaped solid cargo such as coal, iron ore, wood chips, limestone, and grain, to the sea, and more specifically, a plurality of ships arranged in the longitudinal direction of the hull partitioned by bulkheads The present invention relates to a waterproof door device for a bulk carrier having an unloading system including a cargo conveyor and a cutting conveyor formed of a belt conveyor that penetrates a partition wall and is installed on a ship bottom.
[0002]
[Prior art]
In order to unload the bulk material loaded in the cargo compartments arranged in the longitudinal direction of the hull of the hold, a cut-out conveyor installed at the bottom of the cargo through the bulkhead partitioning the cargo compartment, and the bottom of the cargo compartment Distributor to deploy and discharge the bulk material to the cutting conveyor, vertical conveyor installed at the bow or stern to send the bulk material of the cutting conveyor above the upper deck, and vertical on the upper deck It is well known to provide a bulk carrier with an unloading system having a landing conveyor that sends the bulk of the conveyor to a predetermined location on the pier.
[0003]
And when a bulk carrier equipped with such an unloading system is damaged by grounding or a collision, the cutout conveyor penetration part of the bulkhead is set so that the inundation does not sink over the entire hull. It is conceivable to provide a waterproof door device that closes and seals the cargo compartment water tightly, and is disclosed in, for example, Japanese Patent Application Laid-Open No. 5-124576.
[0004]
As shown in FIG. 6, the waterproof door device presented in the above publication includes a first door 81 positioned above the forward belt portion 80a of the cutting conveyor 80, an outward belt portion 80a, and a return belt portion 80b. A second door body 82 positioned between the first door body 81 and the second door body 82, and a third door body 83 positioned below the return path belt portion 80b. The third door 83 is fixed on the ship bottom 84 in a watertight manner, and an elevating device 85 including a fluid pressure cylinder is installed above the first door 81.
[0005]
Then, as shown in FIG. 7, the lifting device 85 is operated to lower the first door body 81 and the second door body 82 according to the guide grooves 88 provided on both sides of the opening 87 of the partition wall 86, and the packing 83a and The return belt portion 80b is moved up and down by the second door body 82 and the third door body 83 through 82b, and the forward belt portion 80a is moved up and down by the first door body 81 and the second door body 82 through packings 81a and 82a. The opening 87 is closed in a state of being sandwiched in a flat state.
[0006]
[Problems to be solved by the invention]
However, when the door bodies 81, 82, 83 are closed, the door bodies 81, 82, 83 are pressed and fixed toward the partition wall 86 by means such as bolts 90 as shown in FIG. However, the door bodies 81, 82, and 83 are formed separately from each other, and the sandwiched surfaces of the door bodies 81, 82, and 83 are exactly aligned with each other, that is, the door bodies 81, 82, 83 are integrally pressed and fixed toward the partition wall 86, and the packing 81a and the packing 82a and the packing 82b and the packing 83a sandwiching the forward belt portion 80a and the backward belt portion 80b are at the same level. The watertightness may be inferior.
[0007]
In particular, as shown in FIG. 9, in order to secure a small installation space in the height direction and to prevent deformation due to the flatness of the belt, the first door body 81 is provided with an outward belt portion 80a. A trapezoidal protrusion 81c that matches the trough shape is formed on the second door 82, and a trapezoidal depression 82c that matches the trough shape of the forward belt portion 80a is formed on both ends of the first door 81. The second door body 82 and the third door body 83 are moved up and down by an elevating drive mechanism (not shown) disposed below the third door body 83 so that the support shaft protrudes and is supported rotatably on the guide frame body. If it is possible, since the first door body 81 is rotating, it is difficult to integrally close the door bodies 81, 82, and 83, and there is a concern that the watertightness may deteriorate.
[0008]
The present invention has been made in view of such circumstances, and when the opening is closed by the door body, each door body is integrated and the opening belt portion and the return belt portion are sandwiched between the openings. A waterproof door device that can be surely obtained with watertightness by pressing the packing provided on the sandwiching surface of each door body to the same level and pressing each other to ensure watertightness. The problem is to make the carrier ship prepare.
[0009]
[Means for Solving the Problems]
The present invention provides a cutting conveyor comprising a belt conveyor in which a plurality of cargo compartments partitioned by bulkheads are arranged side by side in the longitudinal direction of the hull, and the bulk material discharged from the bottom of the cargo compartment is sent to the bow or stern. Doors sandwiching the forward belt portion and the return belt portion of the cutting conveyor between the guide frames disposed along the opening edges on both sides of the opening are installed through the openings provided in the partition walls, respectively. Waterproofing of a bulk carrier that is arranged so as to be able to move up and down, and closes the doors by sandwiching the forward belt part and the backward belt part by raising and lowering each door body except for one of them. The door device has been solved as described above.
[0010]
That is, when the opposite door body is closed and the forward belt portion or the backward belt portion is sandwiched between the opposite end portions of the sandwiching surfaces of the plurality of door bodies arranged across the forward belt portion and the backward belt portion. Each was provided with a fitting portion for engaging with each other.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 to 5 show an outline of a bulk carrier to which the present invention is applied. In the illustrated embodiment, a plurality of cargoes 2 in the hull 1 are partitioned by a partition wall 3 and aligned in the longitudinal direction of the hull. Three cargo compartments 4 are provided. Each cargo chamber 4 is formed in a hopper shape, and a slit-shaped exit 6 is provided in a flat floor plate 5 at the bottom thereof, and a dispenser 7 that reciprocates along the upper surface of the floor plate 5 is provided. . Further, below the floor plate 5, a cutting conveyor 9 made of a belt conveyor is installed through the partition wall 3.
[0012]
The bulk material in the cargo compartment 4 is discharged from the exit 6 by the dispenser 7, is sent to the stern on the cutout conveyor 9, and is transferred to the landing conveyor 12 through the vertical conveyor 11 extending above the upper deck 10. , Landed at a predetermined place on the wharf.
[0013]
The waterproof door device 14 according to the present invention represented by the embodiment described in detail below is installed in each of all the openings 13 of all the partition walls 3 through which the cutting conveyor 9 passes.
[0014]
As shown in FIGS. 2 to 5, this waterproof door device 14 is installed above a frame 15 that surrounds the opening 13 and is water-tightly attached and fixed to one side surface of the partition wall 3, and the forward belt portion 9 a of the cutting conveyor 9. The first door body 16, the second door body 17 installed between the forward belt portion 9a and the return belt portion 9b, and the third door body 18 installed below the backward belt portion 9b. .
[0015]
The frame body 15 is fixed with a packing 19 made of an elastic packing material disposed so as to surround the opening 13 in front of the door bodies 16, 17, and 18, and is positioned in front of the left and right vertical frame portions 15 a and 15 a. Thus, the guide frame body 20 is projected.
[0016]
The first door body 16 has a trapezoidal protrusion 16a that matches the trough shape of the forward belt section 9a and a support shaft 16b that protrudes at both ends. The support shaft 16 b is rotatably supported by bearings 21 and 21 installed between the frame portion 15 a and the guide frame body 20, and one end of the support shaft 16 b is a speed reducer 23 a that constitutes the rotation drive mechanism 23. And is coupled to an electric motor which is a prime mover 23b. The first door body 16 is rotated between a substantially horizontal standby position and a vertically closed position close to the packing 19, and the packing 24 is fixed to an end surface directed downward when the first door body 16 is directed downward. Has been.
[0017]
The second door body 17 has a trapezoidal recess portion 17a that matches the trough shape of the forward belt portion 9a, and is supported by the vertical frame bodies 20a and 20a of the guide frame body 20, so that the standby position and the return belt portion 9b. It is possible to move up and down between the closed position and the closed position. Further, packings 25 and 26 are fixed to the upper and lower end faces of the second door body 17.
[0018]
A packing 27 is fixed to the upper end surface of the third door body 18, and both left and right end portions are supported between the vertical frame bodies 20 a and 20 a of the guide frame body 20 so as to be movable up and down.
[0019]
A lifting drive mechanism 28 for raising and lowering the third door body 18 is coupled to elevators 30 and 30 composed of two left and right worm jacks attached to a base 29 installed below, and one end of a transmission shaft 31 that simultaneously drives them. The motor 32 and the speed reducer 33 are the prime movers.
[0020]
Further, the first door body 16 and the second door body 17 which are arranged with each other with the forward belt portion 9a interposed therebetween are closed on the left and right sides of the first door body 16 and the second door body 17 with the door bodies 16 and 17 being closed. The second door body 17 and the third door body are provided with fitting portions 34 and 35 each including a recess and a projection that are concavo-convexly fitted when the portion 9a is sandwiched, and are disposed with the return belt 9b interposed therebetween. 18 are formed with depressions and protrusions that are concavo-convexly fitted when the second door body 17 and the third door body 18 are closed and the return belt portion 9b is sandwiched between the left and right sides thereof. Fitting portions 36 and 37 are provided, respectively.
[0021]
In the standby state where the first door body 16 is in a horizontal state along the lower surface of the floor plate 5 of the cargo compartment 4 shown in FIG. 1 and the third door body 18 is lowered by the elevators 30, 30. 9, the forward belt portion 9a travels without contacting the first door body 16, and conveys the bulk material 91 discharged from the cargo compartment 4 (see FIG. 1).
[0022]
When closing the opening 13, first, the first door body 16 in the horizontal state is rotated by the rotation drive mechanism 23 so as to be vertically downward, and the upper end portion of the surface facing the packing 19 of the frame body 15 and both the left and right sides. The ends are pressed in a watertight manner. At this time, the downward end surface is slightly separated from the forward belt portion 9a.
[0023]
Next, when the third door 18 is lifted by the lifting drive mechanism 28, the flat linear upper end surface comes into contact with the lower surface of the return belt portion 9b and pushes it up, and then the upper surface of the return belt portion 9b is second. Touch the flat linear lower end surface of the door body 17 and push it up. Further, the upper end surface of the second door body 17 touches the lower surface of the forward belt portion 9 a and pushes it up to contact the lower end surface of the first door body 16. (See FIG. 4).
[0024]
The return belt portion 9b is slightly lifted upward while remaining flat, and the outward belt portion 9a is slightly lifted upward while remaining trough. The packing 24 of the first door body 16 and the packing 25 of the second door body 17 are provided. Are in close contact with each other on the front and back surfaces of the forward belt portion 9a to make them watertight. As a result, it is possible to obtain water tightness during navigation without causing deformation of the forward belt portion 9a of the cutting conveyor 9 or deterioration of the belt.
[0025]
In particular, in the present embodiment, when the second door body 17 and the third door body 18 are raised in order to close the opening 13, the first door body 16 and the first door body 16 arranged with each other across the return belt 9b are arranged. On the sandwiching surfaces of the two door bodies 17, the fitting portions 36 and 37 made of recesses and protrusions provided on the left and right side portions of the two door bodies 17 are raised in an unevenly fitted state, and at the same time, the outward belt portion 9 a is On the sandwiching surfaces 16c and 17c of the first door body 16 and the second door body 17 that are arranged to be sandwiched with each other, fitting portions 34 and 35 made of depressions and protrusions provided on both left and right side portions thereof are mutually connected. Since it rises in the state where the projections and recesses are engaged, the first door body 16, the second door body 17, and the third door body 18 are integrally connected to block the opening 13 formed in the partition wall 3 as a single door. become.
[0026]
That is, the packing 24 of the first door 16, the packings 25 and 26 of the second door 17, and the packing 27 of the third door 18 are not displaced from each other at the same level to the forward belt 9 a and the return belt 9 b. Since it is pressed, reliable water tightness can be ensured.
[0027]
Further, each of the fitting parts 34 and 35 and the fitting parts 36 and 37 may be a protrusion and the other may be a depression, but the protrusion has a small diameter toward the tip and the depression has a small diameter toward the inside. Therefore, mutual fitting is easy.
[0028]
【The invention's effect】
As described above, according to the present invention, the plurality of door bodies sandwiching the forward belt portion and the backward belt portion have the packings provided on the sandwiching surfaces of the door bodies at the same level, that is, each door. Since the body is integrated and pressed against the partition wall having the opening, the opening is closed by being pressed, so that watertightness can be reliably obtained.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view schematically showing an example of a bulk carrier to which the present invention is applied.
FIG. 2 is a front view of the waterproof door device according to the embodiment of the present invention when opened.
3 is a cross-sectional view taken along line AA in FIG.
4 is a front view of the embodiment shown in FIG. 2 when closed. FIG.
5 is a cross-sectional view taken along line BB in FIG.
FIG. 6 is a front view showing a conventional example when opened.
7 is a front view of the conventional example shown in FIG. 6 when closed. FIG.
8 is a cross-sectional view taken along line CC in FIG.
FIG. 9 is a schematic view showing a different conventional example.
[Explanation of symbols]
3 Bulkhead, 4 Cargo compartment, 9 Cutting conveyor, 9a Outward belt part, 9b Return belt part, 13 Opening, 14 Waterproof door device, 16 First door body, 17 Second door body, 18 Third door body, 34 Fit Joint part, 35 fitting part, 36 fitting part, 37 fitting part

Claims (1)

A plurality of cargo compartments partitioned by bulkheads are arranged side by side in the longitudinal direction of the hull, and a cutout conveyor comprising a belt conveyor for sending loose materials discharged from the bottom of the cargo compartment to the bow or stern is provided in the bulkhead. The doors sandwiching the forward belt part and the return belt part of the cutting conveyor are arranged so that they can be raised and lowered between the guide frame bodies arranged along the opening edges on both sides of the opening. is, there waterproof door device roses product carrier for closing the opening the state sandwiching the forward belt unit and return belt portion close to each other by a respective door elevating except one of them Te, the side end portions of the clamping surfaces facing each other of the forward belt portion and the door body that is arranged to sandwich the return belt portion, forward belt unit or backward belt closing the opposite door body Rose was carrier waterproof door device, wherein a fitting portion for recess-projection fitting each other when sandwiching the are provided.

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