JPH06191647A - Loading method and device of powder cargo - Google Patents

Abstract

PURPOSE:To improve the loading efficiency of the powder by providing a scraper type chain conveyor at the lower side of a deck of each hold of a powder cargo boat to transport powder cragoes such as cement. CONSTITUTION:A loading device to load powder cargoes evenly in a flat form, to each hold 25 of a powder cargo boat 21 which has holds 25 partitioned into plural sections, is composed mainly of a scraper type horizontal chain conveyor 30 provided from a powder throwing-in hole 28 almost in the longitudinal direction of the hull 22, extending horizontally at the lower side of the deck of each hold. And the conveyer 30 is composed of an endless chain 31 extending horizontally and suspended to a driving pulley 32 and a driven pulley 33, and plural scrapers 36 installed to the chain 31. Consequently, the power cargoes can be loaded evenly up to the corners of the holds, and the effect to improve the loading efficiency of the powder can be obtained.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to a method and apparatus for loading powder cargo such as cement onto a powder cargo ship.

[0002]

2. Description of the Related Art Conventionally, a powder cargo ship 1 for transporting powder cargo such as cement is generally equipped with a vertical bulkhead 3 which crosses the center of a hull 2 and a horizontal bulkhead 4 which is provided at an appropriate position. Is divided into a plurality of sections such as 2 or 4 sections. In the powder cargo ship 1 having such a ship carrier 5, an air slide method is generally adopted as a method for loading the powder cargo on the ship carrier 1, but various equipment such as a longitudinal air slide is exposed on the deck. It is easy to corrode parts such as casings and intermediate valves due to seawater and rainwater because it is installed on the ship and requires a lot of manpower for management and repair and maintenance.If management is poor, there is a risk of seawater entering the ship's hold. Therefore, in recent years, as shown in FIGS. 7, 8 and 9, a horizontal type screw conveyor 6 extending in the vertical direction is installed under the deck. That is, as shown in the figure, the powder received from the land side loader is first sent to the distribution tank 8 with an air slide, and then the distribution tank 8 is used as a starting point for
The powders are loaded from the distribution tanks 8 into the boats 5 through the charging chutes 9 at several positions on the deck extending in the direction, four positions in the drawing.

In this way, for example, four horizontal screw conveyors 6 installed under the deck of each ship 5 have an open type structure and are deposited below the deck at the position of the charging chute 9 in the ship 5. The powder is held horizontally and moved to the front and rear empty volumes for stacking. Further, in order to unload the powder, the powder is sent to a flow conveyor 14 by an aeration device 11 composed of a large number of open air slides 12 provided on the bottom surface of each ship 5, as in the conventional case, and the flow conveyor 14 causes the cargo handling machine room to operate. 15 and then transferred to a bucket elevator 16 to be pumped up and unloaded on land by an air pumping device 17.

[0004]

In the conventional powder cargo ship 1 equipped with such a loading device, the efficiency of powder loading with respect to the ship hold volume by the horizontal type screw conveyor 6 is poor, and it is shown in FIG. The horizontal screw conveyor 6 is formed in order to form the mountain at the angle of repose with the powder in the boat 5 loaded in the cross section of the hull as shown in FIG. There is a problem that the cornering of the boat barge located away from is left as a considerable amount of void space, that is, a wasted space, resulting in poor loading efficiency when fully loaded.

Therefore, the object of the present invention is to eliminate the above-mentioned problems in the prior art and solve the problem by scraping the scraper under the deck of each ship of a powder cargo ship that transports powder cargo such as cement. A type chain conveyor is installed, and powder freight is loaded to improve the loading efficiency of powder by enabling the powder to be loaded well even on the far corners of the ship by the scraper type chain conveyor. A method and apparatus are provided.

[0006]

In order to achieve the above object, according to the present invention, a method for loading a powder cargo is a method for loading a deck of a cargo ship in which a hull is divided into a plurality of barges.ゞ In a powder cargo ship that loads powder cargo into each ship through a charging chute from a distribution tank installed in the center and loads powder cargo into each ship, the powder received in the distribution tank on the deck The powder cargo loaded from the distribution tank through the loading chute into each ship's hold forms a mountain with the angle of repose at the top of the loading port, and the pile of accumulated powder is the deck of the upper deck. Before reaching the bottom, the scraper type horizontal chain conveyor installed at the required height below the deck moves the powder to the empty volume before and after the peak of the powder peak and spreads it back and forth at the same time. Use a scraper to push it laterally to the corner of the boat Is characterized in that as the level of the powder becomes a ho Isuzu uniform in the state of the ship.

Further, according to the present invention, the device for loading powder cargo is such that the powder loading port is provided under the deck of each ship divided into a plurality of powder cargo ships from the powder loading port to the longitudinal direction of the hull. An open-type scraper-type chain conveyor is installed horizontally so that the powder is moved to an empty volume before and after the peak of the pile of powder accumulated in the ship's hold by this scraper-type horizontal chain conveyor. The feature is that the powder is loaded and spread back and forth, and at the same time, it is spread laterally with a scraper to the corners of the ship hold so that the powder becomes almost uniform.

[0008]

Therefore, according to the present invention, the powder is loaded on each of the boats divided into the required number of sections by the above-mentioned means. First, the powder cargo is distributed on the deck through the land side loader. It is received in the tank, and is input / discharged into / from each distribution vessel from the distribution tank through the input chute. Furthermore, the powder cargo forms a mountain at the angle of repose with the input chute at the top,
When the pile of accumulated powder is about to reach the upper part of the ship's barge, that is, the bottom of the deck, the open type scraper type horizontal chain conveyor with no casing installed at the required height below the deck causes the powder to reach the top of the mountain. It is moved and stacked in the empty volume before and after. Thus, the powder is pushed back and forth while reaching the level of the scraper type horizontal chain conveyor under the deck, that is, at the height, and at the same time, it is pushed laterally with the scraper to the corner of the boat. Since the powder level is almost uniform when the boat is full to go, loading efficiency can be improved.

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 to 6 of the drawings show an embodiment of a loading apparatus for carrying out the method for loading a powder cargo according to the present invention. As shown in the figure, in a powder cargo ship 21 for loading and transporting powder cargo, a hull 22 is watertightly divided into a plurality of independent barges 25 by vertical bulkheads 23 and horizontal bulkheads 24. , A distribution tank 2 with an air slide for loading powder in the center of the deck of the powder cargo ship 21
6 is provided, and the charging chute 2 is fed from the distribution tank 26.
The powder is loaded into and discharged from each of the boats 25 through the loading port 28 via the air port 7, and an air pressure feeding device 29 for unloading the powder to an appropriate place such as a bow or a stern is provided.
Etc. are provided as usual. As described above, the loading device for loading the powder evenly on each of the boats 25 of the powder cargo ship 21 having the boats 25 divided into a plurality of parts is provided below the deck in each of the boats 5. It is mainly composed of a scraper type horizontal chain conveyor 30 installed so as to extend horizontally from the mouth 28 in a substantially vertical direction of the hull 22.

As clearly shown in FIGS. 4, 5 and 6,
The scraper type horizontal chain conveyor 30 for loading the powder cargo of the present invention is a ship carrier for each of the partitioned cargo ships of the powder cargo ship.
It is installed under the deck inside so as to extend horizontally from the powder charging port 28 in the longitudinal direction of the hull 22, and is hung on the drive pulley 32 and the driven pulley 33 provided at the same height under the deck. An endless chain 31 extending in the horizontal direction, and a pair of upper and lower guide rails 34, 35 provided in parallel at intervals in the vertical direction so as to guide and support the upper traveling portion and the lower traveling portion of the chain 31, respectively. , A plurality of scrapers 36 attached to the chain 31 at intervals so as to extend on both sides of the chain 31 in a direction perpendicular to the traveling direction of the chain 31;
And a drive device 37 for driving the drive pulley 32. The driven pulley 33 is preferably a so-called take-up pulley that can adjust the tension of the chain 31.

According to the loading apparatus for carrying out the method for loading the powder cargo of the present invention thus constructed, first, the powder cargo is distributed to the distribution tank of the powder cargo ship 21 docked at the wharf. 26, and the powder is loaded into the ship 25 from the powder input port 28 of each ship 25 through the charging chute 27 extending in four directions from the distribution tank 2630.

In this way, the powder charged into the boat 25 through the powder charging port 28 is gradually deposited to form a mountain having a repose angle with the powder charging port 28 as the apex and the pile of the deposited powder. Become. Before the pile of accumulated powder reaches below the deck on the upper part of the ship 25, by operating the open type scraper type chain conveyor 30 installed below the deck, the pile of powder is removed. The apex is scraped off and moved to the front and rear empty volume parts for stacking. Therefore, if the powder is continuously and sequentially charged through the powder charging port 28, the powder reaches the level of the scraper type horizontal chain conveyor 30 installed under the deck, that is, the height of the scraper type horizontal conveyor. The horizontal chain conveyor 30 spreads the powder forward and backward, and at the same time, the scraper-type horizontal chain conveyor 30 spreads the powder laterally to the corners of the ship's barge 25 so that the powder level is almost full. It becomes horizontal evenly and the stowage efficiency can be improved.

[0014]

As described above, the method and apparatus for loading the powder cargo of the present invention is provided by installing and using the scraper type horizontal chain conveyor as the loading apparatus for the powder under the deck of the ship. Since the powder can be evenly loaded up to the corner of the ship, the effect of improving the loading efficiency of the powder can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing the overall arrangement of an apparatus for carrying out the powder cargo loading method of the present invention.

FIG. 2 is a schematic vertical sectional view of the loading device of FIG.

3 is an enlarged schematic cross-sectional view of the loading device of FIG.

FIG. 4 is an enlarged partial view of the loading device of FIG.

5 is an enlarged schematic vertical sectional view of the loading device of FIG. 2;

6 is an enlarged plan partial view of the loading device of FIG. 4;

FIG. 7 is a schematic plan view of a conventional device.

FIG. 8 is a schematic vertical sectional view of the conventional apparatus of FIG.

9 is an enlarged cross-sectional schematic view of the conventional device of FIG.

[Explanation of symbols]

 1 Powder Cargo Ship 2 Hull 3 Vertical Bulkhead 4 Horizontal Bulkhead 5 Ship Barge 6 Horizontal Screw Conveyor 8 Distribution Tank 9 Input Chute 11 Aeration Device 12 Open Air Slide 15 Cargo Handling Room 16 Bucket Elevator 17 Air Pressure Feeding Device 21 Powder Cargo Ship 22 Hull 23 Vertical bulkhead 24 Horizontal bulkhead 25 Shipboard 26 Distribution tank 27 Input chute 28 Powder input port 29 Pneumatic feeding device 30 Scraper type horizontal chain conveyor 31 Chain 32 Drive pulley 33 Driven pulley 34 Guide rail 35 Guide rail 36 Scraper 37 Drive device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaaki Kawakami 2-7-5 Minamisuna, Koto-ku, Tokyo Onoda Engineering Co., Ltd.

Claims (2)

[Claims] 1. A powder cargo is loaded into each ship by means of a distribution tank provided in the center of the deck of a cargo ship whose hull is divided into a plurality of ship holds, into each ship via a charging chute. In a powder cargo ship that loads body cargo, the powder cargo received in the distribution tank on the deck was put into each ship's hold from the distribution tank through the charging chute, with the loading port at the top. Before the pile of accumulated powder reaches the bottom of the deck on the upper part of the ship, it forms a mountain by the angle of repose, and the peak of the powder mountain is reached by the scraper type horizontal chain conveyor installed at the required height below the deck. The powder is moved to the empty volume before and after the product and spread to the front and back, and at the same time, it is spread laterally with the scraper to the corner of the ship, and the powder level is almost uniform when the ship is full. A method for loading powder cargo, characterized in that . 2. An open-type scraper-type chain conveyor is installed below the deck of each ship divided into a plurality of powder cargo ships so as to extend horizontally in the longitudinal direction of the hull from the powder inlet. This scraper-type horizontal chain conveyor moves the powder to the empty volume before and after the peak of the pile of powder accumulated in the ship and pushes it forward and backward, and at the same time with the scraper in the horizontal direction. A device for loading powder cargo, which is characterized in that the powder is spread evenly to the corners of the ship's barge so that the powder becomes almost uniform.