JPS6215194A - Hold structure of bulk loading ship - Google Patents

Abstract

PURPOSE:To increase the space in a hold and increase the loading efficiency by installing an air jetting means directed to a carrying-out conveyor arranged in the longitudinal direction of a hull and onto the hopper surface on the bottom part of the hold, onto the bottom part of the hold, and reducing the inclination angle of the hopper on the bottom part of the hold. CONSTITUTION:In the hold structure, a bulk-load carrying-out conveyor 16 which extends in the longitudinal direction of a hull 13 is installed onto the bottom plate in a hold 17, and a hopper-shaped bottom plate is provided towards the conveyor 16. An injection part 19 for jetting air towards the carrying-out conveyor 16 is installed onto a hopper-shaped bottom plate 18. Therefore, the bulk-load on the hopper-shaped bottom plate 18 can be transferred onto the carrying-out conveyor 16 by the jetted-out air, and the inclination angle of the hopper-shaped bottom plate can be reduced. Therefore, the loading space in the hold can be increased, and the loading efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a hold structure for a bulk carrier for transporting bulk cargo such as ore, coal, grain, etc.

[Prior art and its problems]

Figure 3 is a cross-sectional view showing the hold structure of a conventional bulk carrier, which has a device for extracting cargo such as ore, coal, grain, etc. stored in the hold using a conveyor installed at the bottom of the hold. be. The hold 11 of the hull 1 includes upper inner plates 5 and 6 for forming top side tanks A and B between the deck 2 and the side outer plates 3 and 3, and upper inner plates 5 and 6 above the bottom plate 4 and adjacent to the bottom plate 4. It is formed by hopper-shaped lower hollow plates 7, 7 and 8, 8 that slope downward toward two unloading conveyors 9, 10 provided in the longitudinal direction of the hull 1.

The upper inner plates 5, 6 are sloped in order to reduce the free surface of the load and prevent it from moving. The lower hot plates 7, 7 and 8, 8 are inclined at an angle of 50 to 60 degrees toward the unloading conveyors 9, 10 in order to allow the unloaded material to fall naturally onto the unloading conveyors 9, 10. It forms a lower hopper. In FIG. 3, 12 is a notch.

The spaces C, D, and E formed between the lower hopper consisting of the lower hopper plates 7, 7 and 8, 8, and the ship side outer plates 3, 3 and the bottom plate 4 can be used as parast tanks. As mentioned above, the top side tanks A and B can also be used as palast tanks, which is a waste of space.

[Purpose of the invention]

Therefore, the purpose of this invention is to eliminate wasted space between a ship's hold and a ship's side shell, and to transport cargo such as ore, coal, grain, etc., which can reduce the materials necessary for construction and reduce construction costs. Our purpose is to provide cargo hold structures for bulk carriers.

[Summary of the invention]

The present invention provides a cargo hold structure for a bulk cargo ship, in which an unloading conveyor for carrying out bulk cargo extending in the length direction of the cargo hold is provided on the bottom plate of the cargo hold, and a lower hopper plate facing the unloading conveyor is disposed within the cargo hold. The present invention is characterized in that air jetting means for forcibly sending out the material on the lower hopper plate to the unloading conveyor by jetting air is disposed on the lower hopper plate.

[Structure of the invention]

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a cross-sectional view of the right half of a bilaterally symmetrical hold structure, showing an embodiment of the hold structure for a bulk carrier according to the present invention, and FIG. 2 is a plan view of the same. The hold 17 of the hull 13 is located on the deck 22
an upper inner plate 21 that forms a top side tank 20 between the outer shell plate 15 and the outer shell plate 15; The lower end of the conveyor 16 is located above the unloading conveyor 16.
A lower hopper plate 18 forming a lower hopper of the hold, which has a gentle inclination angle adjacent to both sides of the vessel, and a plurality of air blowing means 19 arranged facing on the lower hollow/groove plate 18.
It is formed by.

18a and 18b are guide plates provided between the upper end of the lower hopper plate 18 and the ship side outer plate 15; 23 is a hatch; 24
is the center line.

The air ejection means 19 has a large number of ejection ports installed in the lower inner plate 18 to eject compressed air sent from a compressor (not shown) toward the side of the unloading conveyor 16 along the upper surface of the lower hopper plate 19. It consists of a nozzle.

As shown in FIG. 2, the air blowing means 19 are installed at appropriate positions on the lower hot plate 18 at predetermined intervals.

The number of air blowing means 19 installed and their installation intervals are determined by
It is appropriately determined in consideration of the type of granular powder 25 to be accommodated in the container 7.

Further, the lower hopper plate 18 can be tilted to an appropriate angle by manual or mechanical means.

The angle of inclination of the lower hollow plate 18 is appropriately determined in consideration of the grain size, density, etc. of the material 25 in the hold 17.

In the hold structure configured in this way, the lower hot plate 1
The cargo 25 in the hold 17 deposited on the cargo hold 17 is forcibly moved to the unloading conveyor 16 side K by air ejected from the air ejection means 19 from the lower part thereof,
For example, deck 2 may fall onto the unloading conveyor 16.
2 to be carried out.

As mentioned above, in this invention, the lower hopper plate 1
The load 25 on the lower hopper plate 18 is forcibly moved by the air jetted from the air jetting means 19.
The angle of inclination can be made smaller or eliminated than in the past. Therefore, the space 26 below the lower hoisting plate 18 can be made smaller, and thereby the hold 18
The amount of cargo that can be loaded inside can be increased.

Note that the air blowing means is not limited to the above embodiment.
Any type of material may be used as long as it has a function of pushing out the material toward the unloading conveyor 16 using air.

〔Effect of the invention〕

As described above, according to the present invention, by reducing or eliminating the inclination angle of the lower hopper plate, the wasted space below the ship's hold can be minimized or eliminated, and thereby the space inside the ship's hold can be reduced or eliminated. This brings about an industrially useful effect in which the load capacity of the soybean material can be increased to a large extent.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the hold structure of a bulk carrier according to the present invention, and FIG. 2 is a plan view showing an enlarged main part thereof.
FIG. 3 is a cross-sectional view showing the hold structure of a conventional bulk carrier. In the drawings, 13...hull, 14.
...Bottom plate, 15...Ship side outer plate, 16
...Unloading conveyor, ]7... Ship hold,
18... Lower hopper plate, 19... Air blowing means, 20... Top side tank, 21...
- Upper inner board, 22...Deck, 23...Hatch, 25...Location, 26...Space.

Claims (1)

[Claims] In the hold structure of a bulk cargo ship, an unloading conveyor for carrying out bulk cargo extending in the length direction of the hold is provided on the bottom plate of the hold, and a lower hopper plate facing the unloading conveyor is disposed in the hold, wherein the lower hopper The sprinkles on the board,
A hold structure for a bulk carrier, characterized in that air blowing means for forcibly feeding air to the unloading conveyor is disposed on the lower hopper plate.