JPH0891585A - Automatic cargo unloading device for ship - Google Patents

Abstract

PURPOSE: To perfectly carry out cargos even in a hold of flat bottom by using a suspending type scraper conveyor which can move up and down, right and left in the hold and scrape together the cargos in the direction of a hopper. CONSTITUTION: A scraper conveyor 5 is moved in the right and left directions by a trolley 7 suspended from a rail 6, and in addition moved in the up and down directions by deliveringly operating a chain by a hoist mechanism in the trolley 7. The upper side of cargos 4 are usually scraped up, and the cargos 4 are moved from all the place in a hold to an opening on one side of the lower edge of the hold. The cargos 4 introduced in a hopper are collected in the direction of a scraper loader 9 by a screw conveyor 8, the cargos scraped up by the scraper loader 9 are loaded on a bucket type elevator 10, and lifted outside the hold. The cargos transferred from the elevator 10 to a conveyor 11 are carried outside the ship by a boom type conveyor 12 projecting from the broadside to the outside of the ship.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an automatic unloading system for automatically and continuously sending bulk cargo from a cargo hold of a vessel loaded with bulk cargo such as grain, coal and iron ore to an outboard cargo receiving facility. Regarding the device.

[0002]

2. Description of the Related Art Various unloading devices have been devised in order to quickly unload large bulk carriers. The conventional method is to use a crane at a port facility to unload a grab bucket or bucket conveyor from the open hatch of the hold and intermittently or continuously carry the load, or a belt conveyor or suction pipe. A method was used in which the cargo was unloaded and the cargo was continuously carried from the top to the outside of the hold. In the latter case, continuous operation is possible, so the work efficiency is improved compared to the former, but since the work place constantly moves, it is necessary to move the position of the conveyor and suction pipe after a certain period of time, and further unloading. In the final stage, there was a problem that the work efficiency dropped extremely. In addition, the efficiency of this unloading work is greatly influenced by the quality of the port facilities.

In recent years, it has been considered to equip a ship itself with such a bulk cargo transfer device. One of them is
For example, Japanese Patent Application No. 3-506374 (Patent Document 5-5068)
No. 27), a cargo transfer device is installed in the hold of the ship itself. According to the above method, the cargo can be continuously carried out of the hold without the help of the port facility, which is expected to make a dramatic improvement in efficiency compared to the conventional method, but the cargo itself Since it is carried to the conveyor at the lowest position in the hold by dropping, it is necessary to make the lower part of the hold into a hopper shape, and there is a drawback that the volume of the hold is limited by the inclined part of the lower part. Further, in the above-mentioned type, if the load is not completely removed, the transfer device at the bottom of the hold cannot be accessed, which is inconvenient when the transfer device fails.

[0004]

It is desirable that the cargo hold of a bulk carrier has a flat bottom as much as possible, a large volume is ensured, and the center of gravity of the cargo is moved as little as possible.
On the other hand, when transferring the cargo to the outside of the ship, it is most efficient and economical to collect the cargo as low as possible, lift it all at once to the upper surface of the hold by the elevator, and transport the cargo to the outside of the ship. Therefore, if the cargo is pulled to one side of the bottom of the hold and is collected in one place and loaded from the hocher to the elevator, the cargo can be efficiently transferred even in a flat-bottomed hold. The lateral movement of the load can be realized relatively easily by scraping the top of the bulk load in one direction with a scraper or the like. Conventionally, a bulldozer, a scraper, etc. were placed on the load to perform the scraping work, but if this can be performed continuously over the entire width of the hold, the unloading work can be performed more efficiently.

[0005]

According to the present invention, a transverse cylindrical hopper is provided at a lower edge of a partition portion of a hold formed into a substantially cubic shape so as not to damage the volume of the hold as much as possible. In order to move the bulk cargo to the hopper side of the hold through a horizontal opening provided on one side of the lower edge of the hold, a scraper conveyor that scrapes the upper side of the load is provided in the hold and the bulk load introduced from the hold into the hopper is placed in the hopper. It is gathered in one place by the screw conveyor and scraper loader installed in the vessel, loaded into the bucket elevator installed in the cargo compartment, and further extended from the port side of the vessel to the outside of the vessel via the stationary conveyor placed on the port side of the vessel. The present invention relates to an automatic cargo unloading device for bulk ships, which is carried out overboard by a boom type conveyor. The scraper conveyor is movable in the left-right and up-down directions by a trolley and a hoist mechanism suspended from rails installed on the ceiling of the hold so that the upper surface of the cargo can be scraped off at all times.

According to the present invention, a scraper loader which is coaxially driven with the left and right screw conveyors is provided in the central portion of the hopper, and the bulk load collected in the central portion is loaded from the scraper loader into the bucket elevator. Characterize. Further, a hatch for adjusting the inflow amount of bulk cargo is provided at the opening of the lower edge of the hold, and this hatch moves up and down along the side of the hold by hydraulic pressure, so that the screw conveyor and scraper loader in the hopper will break due to excessive load. So that there is no Further, when repairing or inspecting these conveyors, it is possible to completely close the opening.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic unloading device for bulk cargoes according to the present invention is shown in FIG. A lateral cylindrical hopper 2 is provided at the lower edge of the partition portion of the hold 1 that is formed into a substantially cubic shape, and bulk cargo is passed to the hopper side of the hold through a horizontally long opening 3 provided at one side of the lower edge of the hold. A scraper conveyor 5 for scraping the upper side of the load 4 is provided in the hold for moving. As shown in FIG. 1, the scraper conveyor 5 is moved in the left-right direction substantially orthogonal to the conveyor driving direction along the rail 6 by a trolley 7 suspended on a rail 6 installed on the ceiling of the hold, and The hoist mechanism in the trolley 7 feeds the chain to operate the trolley 7 via the chain.
The scraper conveyor 5 suspended in the vertical direction can be moved vertically, and the upper surface of the cargo 4 is always scraped off and the cargo hold 1
The cargo is transferred from any place inside to the opening 3 on one side of the lower edge of the hold. As shown in FIG. 5, it is desirable that the rails 6 be arranged in a roughly mountain shape on the ceiling of the hold according to the loading state of the bulk cargo. Also scraper conveyor 5
As shown in FIG. 1 and FIG. 5, it is desirable that two pieces are provided for each hold, and they are provided so as to face in a direction substantially perpendicular to the hopper 2 at the end of the hold.

A screw conveyor 8 and a scraper loader 9 are arranged in the hopper 2, and the load introduced into the hopper 2 is collected by the screw conveyor 8 in the direction of the scraper loader 9 arranged in the central portion of the hopper 2. The cargo that is scraped up by the scraper loader 9 is loaded into the bucket elevator 10 provided in the cargo compartment and lifted to the outside of the cargo hold 1. Elevator 1
The other end of 0 is a belt conveyor 11 fixed on the port side of the ship, as shown in FIG. 1, FIG. 4 or FIG. 5 as another embodiment.
It is open above, from elevator 10 to conveyor 11
The cargo transferred to is transported to the outside of the ship by the boom type conveyor 12 that projects from the port side to the outside of the ship. In this way, the bulk cargo can be automatically continuously unloaded from the bottom of the hold to the port facility outside the ship.

Depending on the type of bulk cargo, it may flow into the hopper 2 beyond the carrying capacity of the screw conveyor 8 and scraper loader 9, causing clogging or failure of the carrying equipment. In order to prevent this, as shown in FIGS. 6 and 7, the opening 3 at the lower edge of the hold holds
The hatch 13 for adjusting the inflow amount of bulk goods is provided. Hatch 1
3 moves up and down along the side of the hold by hydraulic pressure, for example, to limit the amount of cargo flowing into the hopper 2 so that the screw conveyor 8 and the scraper loader 9 will not be damaged by an excessive load. In the unlikely event that any of these transport devices fails, the opening 3 is fully closed to enable repair work.

The boom type conveyor 12 is a tower crane 14
Thus, the tip portion is arranged so that it can be vertically moved from the horizontal position to an inclined position of about 20 ° and can be swung about 90 ° to the left and right. The position of the crane 14 is preferably in the center of the ship, but may be provided on the port side (for example, port side) as shown in FIG. In this case, the boom type conveyor 12 can be stored in the longitudinal direction of the port side when not in use. As shown in FIG. 2 (a), it is preferable for the stability of the ship to arrange the exit of the elevator 9 and the stationary conveyor 10 of each hold on the port side (for example, starboard side) opposite to the boom and tower crane.

[0011]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, it is possible to automatically and continuously unload a bulk cargo-loaded ship from the ship to the outside of the ship. It does not limit the cargo capacity of the hold. In particular, the present invention uses the hanging scraper conveyor that can move the cargo in the cargo hold vertically and horizontally and can scrape the cargo toward the hopper. It provides a particularly effective unloading device for bulk carriers.

[Brief description of drawings]

FIG. 1 is a schematic view showing an outline of an unloading device according to the present invention.

FIG. 2A is a side view and FIG. 2B is a plan view of a ship equipped with the automatic unloading device of the present invention.

FIG. 3 is an enlarged view of the hold portion of FIG.

FIG. 4 is a sectional view of the hold in the IV-IV direction of FIG.

FIG. 5 is a view showing the arrangement of rails and trolleys in the hold at the same position as in FIG. 4;

FIG. 6 is a layout view of a hatch that opens and closes an opening of a hopper.

7 is a side view of the hatch of FIG.

[Explanation of symbols]

 1 Ship Hold 2 Hopper 3 Opening 4 Cargo 5 Scraper Conveyor 6 Rail 7 Trolley 8 Screw Conveyor 9 Scraper Loader 10 Bucket Elevator 11 Stationary Conveyor 12 Boom Conveyor 13 Hatch 14 Tower Crane

Claims (5)

[Claims] 1. A horizontal cylindrical hopper is provided at a lower edge of a partition portion of the hold, and bulk cargo is moved to a hopper side of the hold through a horizontally long opening provided at one side of the lower edge of the hold.
A scraper conveyor for scraping the upper side of the load is installed in the hold, and a screw conveyor and scraper loader for collecting the bulk load introduced into the hopper from the hold in one place in the hopper are arranged in the hopper, and A bucket-type elevator for loading a load to the outside of the hold is provided in the hold division, and the other end of the bucket-type elevator is arranged on the stationary conveyor arranged outside the hold, and the other end of the stationary conveyor is An automatic cargo unloading device for ships, which is placed on a boom-type conveyor that overhangs from the ship's port side so as to carry the cargo out of the ship. 2. The ship according to claim 1, wherein the scraper conveyor is hung in the hold by a trolley and a hoist mechanism that are hung on rails installed on the ceiling of the hold, and is movable in the left and right and up and down directions. Automatic unloading device for 3. A scraper loader that is driven coaxially with the left and right screw conveyors is provided in the central portion of the hopper, and the bulk load collected in the central portion is loaded from the scraper loader into the bucket elevator. An automatic unloading device for a ship according to claim 1. 4. The automatic ship unloading device according to claim 1, wherein a hatch for adjusting the inflow amount of bulk cargo is provided in the opening of the lower edge of the hold. 5. The automatic ship unloading device according to claim 4, wherein the hatch is hydraulically moved up and down along a side surface of the hold.