Self-unloading bulk cargo transport ship and unloading method thereof

Abstract

The invention relates to a self-unloading bulk cargo transport ship. The self-unloading bulk cargo transport ship comprises a plurality of marine cranes which are arranged above a deck, and a cargo hold grab bucket is arranged at the end of each of the marine cranes; deck hoppers which are in one-to-one correspondence to the marine cranes are arranged on the deck of a ship body and positioned on a starboard, and a longitudinal conveyor belt is arranged below the deck hoppers along the longitudinal direction of the ship body and positioned above cargo holds; a first discharge outlet is arranged on the tail portion of the longitudinal conveyor belt and corresponds to a horizontal conveyor belt, and the horizontal conveyor belt is arranged along the horizontal direction of the ship body and communicates the deck starboard and a deck larboard; a second discharge outlet is arranged on the tail portion of the horizontal conveyor belt and corresponds to an inclined conveyor belt, and the inclined conveyor belt is upwards inclined along a deck of the larboard; and a third discharge outlet is arranged at the tail end of the inclined conveyor belt and corresponds to an unloading arm of a gantry crane, the unloading arm can telescope, slew and luff, and a fourth discharge outlet is arranged at the tail end of the unloading arm.

Description

Technical field [0001] The invention relates to a self-unloading bulk carrier and an unloading method thereof, belonging to the technical field of ships. Background technique [0002] According to research, the transportation cost and port cost of self-unloading bulk carriers are far lower than other bulk carriers without self-unloading equipment. However, at present, gravity-fed, bilge belt conveyor type self-unloading ships are commonly used in shipping industry. Traditional self-unloading bulk carriers usually adopt gravity-feeding and bilge belt conveyor self-unloading equipment. This equipment generally consists of a hopper 2, a bucket door 201, a bilge conveyor belt 1, and so on. Since this set of equipment uses gravity feeding, the bulk cargo conveyor belt must be arranged in the bilge. The bilge conveyor belt 1 connects the cabins, but the bilge conveyor belt must be kept watertight when it passes through the watertight bulkhead 3, and a scissor watertight gate is requ...

AI Technical Summary

Problems solved by technology

[0004] First of all, according to its structural characteristics, it can be seen that the bilge structure of this self-unloading bulk carrier is complex, and the relevant mechanisms for belt conveyance take up a large space. The bottom of the bilge needs to be designed as a W-shaped double-bottom structure to realize gravity unloading, which sacrifices a lot of the volume of the cargo hold, resulting in a waste of cargo hold capacity. It can be seen that the volume of the existing self-unloading bulk carrier cargo hold Small, inefficient storage

[0005] Second, relying on gravity to unload cargo at the bottom of the bilge, it is difficult to increase the unloading speed, and it is difficult to adjust

There are two side-by-side bilge conveyor belts at the bottom of the ship, the structure and control are very complicated, and they are prone to failure. Moreover, once a certain warehouse part fails, the entire unloading conveyor system of the self-unloading bulk carrier will stop , the unloading can only be continued after the maintenance is completed, which greatly affects the work efficiency and causes a waste of manpower, material resources, financial resources, and time. Moreover, the watertight bulkhead 3 is generally a watertight gate, which has a high failure rate and causes a loss of load capacity.

[0007] Fourth, the existing self-unloading bulk carrier, because its unloading channel, that is, the bilge conveyor belt, is located at the bottom of the warehouse, so the unloading direction is fixed and it is difficult to change it. Discharge of the ship, so its discharge conditions are restricted

[0008] Fifth, since the self-unloading facilities are set at the bottom of the warehouse, it is necessary to install a mechanical ventilation system, which is costly

[0009] Sixth, all self-unloading facilities are installed at the bottom of the cargo hold. Once a failure occurs, the entire set of equipment needs to stop working for maintenance, and the maintenance space is very small and extremely inconvenient

[0010] To sum up, the self-unloading system of this type of bilge belt conveying self-unloading ship is arranged at the bottom of the cargo hold. The structure of the cargo hold is special, the utilization rate of the tank capacity is low, the self-unloading efficiency is low, and the failure rate is high. Difficult maintenance, heavy dust pollution

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