JPH06144357A - Method and device for handling transporting powdery cargo - Google Patents

Abstract

PURPOSE:To prevent a loss to a minimum limit due to an emergency accident of a hull by forming a hold into a water-tight structure divided into a plurality of parts such as an oceanic cargo ship. CONSTITUTION:In order to load fine particles to each of holds 5 water-tightly divided into a required number of sections in accordance with size of a ship body, the fine particles received through a land side loader in a distributing tank 8 on a deck are conveyed by a horizontal conveyer 33 horizontally extended on the deck from a distributing tank 30, and a powdery cargo is thrown into and loaded in each hold 5 through a loading chute 10 of connecting this horizonal conveyer 33 to each hold 5. In the case of unloading, reversely to the case of loading, the fine particles are conveyed upward in a vertical direction from a pit in each hold bottom part by a vertical conveyer 35 vertically extended from each hold bottom part, and then the fine particles are conveyed to a press feed tank 30 by the horizontal conveyer 33 and discharged by this press feed tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for carrying and handling powder cargo such as cement, calcium carbonate, fly ash and blast furnace slag powder in a powder cargo ship.

[0002]

2. Description of the Related Art A conventional powder cargo ship 1 is shown in FIG.
As shown in FIG. 6, the ship bulkhead 5 is divided into several sections such as 2 or 4 sections by the vertical bulkheads 3 that cross the longitudinal center of the hull 2 and the horizontal bulkheads 4 provided at appropriate places for coastal transportation. It is divided. In the powder cargo ship 1 having such a boat 5, as a method of loading the powder cargo on the boat 5, an air slide system is generally adopted. That is,
As shown in the drawing, the powder received from the land side loader at the loading port 6 provided on the port side of the hull 2 of the conventional powder cargo ship 1 is fed to the distribution tank 8 via the transverse air slide 7 and the like. . Next, the powder is discharged from the distribution tank 8 by the four vertical air slides 9 on the deck extending in four directions from the distribution tank 8 as a starting point, and is thrown into each ship 5 by the chutes 10 at several places. Will be loaded.

Further, as a method of pulling out the powder from each ship 5 in order to unload the powder loaded on the ship 5
A flow conveyor in which powder is provided on the lower surface of the vertical partition wall 3 at the center of the hull 2 by an aeration device 11 composed of a large number of open air slides 12 which are provided on the bottom surface of the boat 5 so as to flow from the port side toward the center of the hull. It is sent to 14. The flow conveyor 14 extends in the longitudinal direction along the center of the hull 2, and the powder is towed to the cargo handling machine room 15 by the flow conveyor 14 and the cargo handling machine room 1
In 5, the powder is transferred from the flow conveyor 14 to the bucket elevator 16 and is pumped up. The powder pumped up by the bucket elevator 16 is unloaded on land by the pressure feed tank 18.

[0004]

In the conventional powder cargo ship 1 provided with such a cargo handling apparatus, the flow conveyor 14 extending in the longitudinal direction along the center of the hull 2 penetrates the entire ship carrier 5 and the upper surface of the ship bottom. To be installed in the flow conveyor 14
The vertical partition wall 3 and the horizontal partition wall 4 which are penetrated by are not completely watertight. Therefore, if a part of the hull 2 is damaged and a hole is drilled due to a marine accident, etc. Not only in the area of No.3, but finally the inundation spreads over all areas of the ship 5 and, in the worst case, sinks the ship.
In addition, when cargo powder is loaded, not only does the powder in all sections lose value as a product due to flooding, but depending on the physical properties, it reacts with seawater to cause heat generation, solidification, etc. It may become more difficult, or sea water pollution may occur.

Therefore, the object of the present invention is to solve the above problems by eliminating the problems of the prior art, and for each ship, the ship is constructed as a watertight structure in which the ship is divided into a plurality of parts like an ocean freighter. It is an object of the present invention to provide a method and a device for cargo handling transportation of powder cargo which enables loading and unloading of powder.

[0006]

In order to achieve the above object, according to the present invention, a method for cargo handling transportation of powder cargo is provided on a deck of a cargo ship in which a hull is divided into a plurality of barges. A horizontal conveyor laid so as to extend horizontally in the longitudinal direction of the hull from the provided distribution tank and pumping tank conveys the powder cargo in the horizontal direction, and the powder is loaded from the horizontal conveyor into each hull via the loading chute. Powder cargo on each ship or by a vertical conveyor standing upright next to a horizontal conveyor and installed vertically from the center of each ship's barge to move vertically from the pit at the bottom of each ship. It is characterized in that it comprises a process of transporting the powder cargo to a pressure feed tank through a horizontal conveyor and unloading the powder cargo.

Further, according to the present invention, an apparatus for cargo-handling and transporting powder cargo is a distribution tank for receiving powder to be loaded and unloaded, which is provided on a deck of a cargo ship whose hull is divided into a plurality of barges. And a pumping tank, a horizontal conveyor laid so as to extend horizontally from the distribution tank and the pumping tank in the longitudinal direction of the hull, a loading chute that connects the horizontal conveyor with each hull, and a vertical pit from the bottom pit of each hull near the horizontal conveyor. It consists of a vertical conveyor standing upright to load powder cargo from a distribution tank to each ship through a horizontal conveyor and loading chute, or from a pit at the bottom of each ship to a vertical conveyor and a horizontal conveyor. The feature is that the powder cargo is conveyed to the pressure-feeding tank via the unloading tank.

[0008]

Therefore, according to the present invention, according to the above-mentioned means, in order to load the powder into each of the boats which are watertightly divided into the required number of sections according to the size of the hull, the distribution on the deck is performed. The powder received by the land side loader in the tank is transported by a horizontal conveyor that horizontally extends from the distribution tank on the deck, and the powder is transferred into each ship through a loading chute that connects this horizontal conveyor and each ship. It is possible to load cargo and load powder cargo into each ship's barge, and in the case of unloading, contrary to the case of loading, a vertical conveyor extending vertically from the bottom of each ship's barge is used to pit each ship's bottom. The powder can be transported vertically upwards from the container, then the powder can be transported to the pumping tank by the horizontal conveyor, and can be landed by this pumping tank. Powder cargo loading and unloading can, etc. to be able in Senso.

Other objects, features and advantages of the present invention will become apparent from the detailed description given below with reference to the accompanying drawings.

[0010]

1 and 2 of the drawings, there is shown a first embodiment of a cargo handling and transporting device for carrying out the method for cargo handling and transporting of powder cargo according to the present invention. As shown in the figure, a cargo handling transport device for cargo handling transport of a powder cargo includes a vertical bulkhead 23, a horizontal bulkhead 24, and the like so that the hull 22 of the powder cargo vessel 21 is individually watertight to a plurality of independent barges 25. A distribution tank 30 and a pressure-feeding tank 32 for receiving powder to be loaded and unloaded, which are provided at appropriate places such as the center of the deck or the bow of the divided powder cargo ship 21, or the stern, and this distribution tank 3
0 and a horizontal conveyor 33 laid so as to extend horizontally from the pressure tank 32 in the longitudinal direction of the hull 22, a loading chute 34 that connects the horizontal conveyor 33 and each ship 25, and a horizontal conveyor 33 from the pit 36 at the bottom of each ship 25. It is mainly composed of a vertical conveyor 35 standing upright vertically to the side of the container to transport the powder cargo from the distribution tank 30 to the horizontal conveyor 3.
3 and loading chute 34 into each ship 25 for loading, or a pit 36 at the bottom of each ship 25.
The powder cargo can be conveyed to the pressure-feeding tank 32 through the vertical conveyor 35 and the horizontal conveyor 33 for unloading.

As shown in FIGS. 1 and 2, the apparatus for carrying out the method for cargo handling and transporting powder cargo according to the present invention is such that the hull 22 of the powder cargo ship 21 has a plurality of independent hulls 25.
It is watertightly divided by a vertical partition 23 and a horizontal partition 24. In the illustrated embodiment, in order to load and transport the powder cargo, the transverse air slide 2 is moved from the loading port 26, which is provided in the same manner as in the past, to the left and right sides of the hull 22 to the central distribution tank 30.
7 is extended so that the powder received by the loading port 26 is first fed into the distribution tank 30 via the transverse air slide 27. A horizontal conveyor 33 is provided so as to extend horizontally from the distribution tank 30 at the center of the deck of the powder cargo ship 21 in the longitudinal direction of the hull 22. This horizontal conveyor 33
For example, a screw conveyor is suitable, and the distribution tank 3
The powder is conveyed in four directions starting from 0.

As shown in FIG. 2, each ship barge 25 is connected to a horizontal conveyor 33 via a loading chute 34, and a pit 36 is provided at the center of the bottom of each ship barge 25. A vertical conveyor 35 is provided vertically from the side of the horizontal conveyor 33 so as to extend vertically. Like the horizontal conveyor 33, the vertical conveyor 35 is preferably a screw conveyor. As shown in FIG. 1 and FIG. 2, this vertical conveyor 35 is of a one-ship, one-hopper type, and usually one vertical conveyor 35 is installed for one ship. As shown in FIG. 3, a plurality of vertical conveyors 35 can be installed for one ship, such as one ship and two hopper type.
That is, with respect to the boats 25 of FIGS. 1 and 2, the horizontal bulkhead between the adjacent boats 25 'is omitted and the two boats are configured as one boat 25'. Further, the tip, that is, the lower end, of the vertical conveyor 35 is inserted into a pit 36 for collecting powder at the center of the hopper of the boat 25, and the powder can be lifted upward by the rotation of the screw. Further, at the bottom of each boat 25, an open air slide type hopper type aeration device 37 is installed on the entire bottom surface so that the powder can be favorably collected in the pit 36. An aeration device 39 is preferably installed also on the bottom surface of the pit 36 in order to fluidize and smoothly flow into the screw conveyor type vertical conveyor 35 and be easily pumped up.

In the aeration devices 37 and 39, the open air slide made of canvas is supplied with air by a blower (not shown), and the powder suspended from the four sides of the bottom of the boat is tilted by the boat hopper.
The powder collected in the pit 36 by the aeration devices 37 and 39 flows into the lower end of the vertical conveyor 35 and can be well pumped upward by the vertical conveyor 35.

The powder that has been pumped up by the vertical conveyor 35 is used for loading, and the horizontal conveyor 34 on the deck is used.
Is operated so that the screw rotates in the direction opposite to the loading direction, the powder is sent to the central cargo handling machine room 29 of the powder cargo ship 21 through the discharge chute 42 and collected in the pressure feed tank 32. The powder is unloaded from the tank 32 and then unloaded. Further, although the cargo handling machine room 29 is provided at the center of the powder cargo ship 21 in the illustrated embodiment, it will be understood that it may be provided at the bow or stern depending on the type and size of the ship.

According to the apparatus for carrying out the method for cargo handling and transporting the powder cargo of the present invention thus constructed, first, when loading the powder cargo, the side docked with the wharf is used. The powder sent from the land-side loader to the port side loading port 26 of the powder cargo ship 21 is sent from the loading port 26 to the distribution tank 30 through the transverse air slide 27, and the distribution tank 30 serves as a starting point for horizontal distribution. The loading chute 34 is loaded into each ship 25 via the conveyor 33 to load the powder.

Next, when unloading the powder, the vertical conveyor 35 is operated to suck up the powder from the pit 36 at the bottom of each ship, and then the screw is rotated in the opposite direction to the case of loading. The powder can be suitably unloaded by sending the powder to the pressure-feeding tank 32 via the discharge chute 42 by the horizontal conveyor 33 and appropriately unloading from the pressure-feeding tank 32.

[0017]

As described above, the method and apparatus for handling and transporting powder cargo of the present invention employs a watertight bulkhead structure for a ship's barge, and uses a ship's bottom air slide, a vertical conveyor, a ship's bottom pit, a horizontal conveyor and the like. By doing so, cargo handling work such as loading and unloading can be performed, so even if a sea hole causes a hole in a part of the hull and inundation occurs inside the ship's hold, the damage will be limited to the one part of the ship that was inundated. Because I was stopped by
It is possible to minimize the loss due to an accident in the hull, and it is possible to perform loading and unloading operations such as loading and unloading powder cargo using horizontal and vertical conveyors. It is possible to obtain great effects such as reduction of powder loss cost, saving of hull repair cost, and ensuring of safety related to human life. Also, by installing a horizontal conveyor on the deck as a transport machine for loading and unloading powder cargo, redundant models can be omitted, which saves costs and facilitates maintenance management. It is possible to achieve the effect of being able to.

[Brief description of drawings]

FIG. 1 is a horizontal schematic view showing the overall arrangement of an apparatus for carrying out a method for cargo handling transportation of powder cargo according to the present invention.

FIG. 2 is a schematic vertical sectional view of the apparatus of FIG.

FIG. 3 is a schematic vertical sectional view similar to FIG. 2 in the second embodiment of the present invention.

FIG. 4 is a horizontal schematic diagram showing the overall arrangement of a conventional device.

5 is a schematic vertical sectional view of the apparatus of FIG.

6 is a schematic cross-sectional view of the device of FIG.

[Explanation of symbols]

 1 Powder Cargo Ship 2 Hull 3 Vertical Bulkhead 4 Horizontal Bulkhead 5 Shipboard 6 Loading Port 8 Distribution Tank 9 Longitudinal Air Slide 10 Loading Chute 11 Aeration Device 14 Flow Conveyor 15 Cargo Handling Room 16 Bucket Elevator 18 Pumping Tank 21 Powder Cargo Ships 22 Hulls 23 Vertical bulkheads 24 Horizontal bulkheads 25 Ship holds 25 'Ship holds 26 Loading ports 27 Cross air slides 30 Distribution tanks 31 Air pressure feeding devices 32 Pressure feeding tanks 33 Horizontal conveyors 34 Loading chutes 35 Vertical conveyors 36 Pits 37 Aeration devices 39 Aeration devices 42 Discharge chute

Front page continued (72) Inventor Masaaki Kawakami 2-7-5 Minamisuna, Koto-ku, Tokyo Onoda Engineering Co., Ltd.

Claims (4)

[Claims] 1. A horizontal conveyor laid so as to extend horizontally in a longitudinal direction of a hull from a distribution tank and a pressure tank provided on a deck of a cargo ship whose hull is divided into a plurality of freight vessels so that the powder cargo can be horizontally moved. Transfer the powder from the horizontal conveyor through the loading chute and load the powder into each ship, or load the powder cargo into each ship, or stand upright beside the horizontal conveyor from the center of each ship. It consists of the process of vertically transporting the powder cargo from the pit at the bottom of each ship by the vertical conveyor provided vertically and transporting the powder cargo to the pressure-feeding tank via the horizontal conveyor to unload it. A method for cargo handling transport of powder cargo. 2. A hopper type aeration device of an open air slide system is provided at the bottom of each boat, and a horizontal conveyor uses a reversible screw conveyor to transfer powder in the horizontal direction and a vertical conveyor uses a screw conveyor. A method according to claim 1, characterized in that the powder is pumped up and the powder is unloaded. 3. A distribution tank and a pressure-feeding tank for receiving powder to be loaded and unloaded, which is provided on the deck of a cargo ship in which the hull is divided into a plurality of barges, and horizontally from the distribution tank and the pressure-feeding tank in the longitudinal direction of the hull. A horizontal conveyor laid so as to extend, a loading chute connecting the horizontal conveyor and each ship barge, and a vertical conveyor erected vertically from the pit at the bottom of each ship bar beside the horizontal conveyor. Characteristic of loading powder from each ship via a horizontal conveyor and loading chute, or transferring powder from a pit at the bottom of each ship to a pressure-feeding tank via a vertical conveyor and horizontal conveyor. A device for cargo handling and transportation of powdered cargo. 4. A hopper type aeration device of an open air slide system is provided at the bottom of each boat and each boat is provided with a vertical conveyor composed of at least one screw conveyor, and a reversible screw conveyor is used as a horizontal conveyor. 4. The apparatus according to claim 3, wherein the powder is loaded and unloaded by means of a load.