JPS58183379A - Method of handling heavy cargo wherein use is made of hull - Google Patents

Abstract

PURPOSE:To enable cargo work onto a hull to be carried readily without rolling or pitching of the hull, by forming to a guay a rest surface in a water body at a depth that is approximately the same as the height of the hull, and adjusting the ballast of the hull so that the hull is allowed to rest on the rest surface. CONSTITUTION:The bottom surface 2 of the hull B having a deck 1 on which heavy things A are to be put is made flat, and the hull rest surface 3 having a depth approximately the same as the height H1 from the bottom surface 2 to the deck 1 is built to the cargo handling guay C. Ballast water is charged into a tank 5 of the hull B so that the hull may be rested on the rest surface 3, the deck 1 is kept approximately flush with the top surface of the guay, a plank 7 is laid on them, and then cargo work of the heavy things onto the hull is carried out by roll-on-off. As the hull B is rested on the rest surface, at the time of the roll-on-off the hull B would not roll or pitch.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for handling heavy objects using a ship's hull.

Conventionally, when transporting heavy cargo by sea, if the heavy cargo is moved from land to the ship (ship or purge) using the horizontal movement method (roll-on-off), unless the ship is extremely large, a large hull heel may occur. , and the hull becomes f-stable.
Otherwise, the roll-on/off movement of heavy-V objects will be hindered, which poses a problem.

The present invention aims to solve the above two problems and provide a method that allows cargo handling operations to be carried out easily while ensuring stability during cargo handling even if the hull is undesirable.

Hereinafter, the present invention will be explained based on one embodiment.

Note that Figures 1 and 2 show, as an example, the case where the ship F (is a non-self-propelled barn), but the same principle applies to the second cargo handling Jj method in the case of a domestic vessel equipped with a propeller. You can use it.

1 and 2, the method of the present invention applies to a hull 13 on which a heavy load A is to be loaded on the deck 1.
The bottom surface 2 of the hull B is formed as a flat surface, and the bottom surface 2 is formed from the deck of the hull B.
Floor up to 11. Hull sinking surface 3 of approximately the same depth Il as
A sinking section 1 having a cargo handling surface 1 is built on the cargo handling wall C, and the hull B is sunk on the sinking surface 3 by injecting ballast water into its tank 5, and the deck 1 and the quay 1: While maintaining the water surface at approximately the same level, a gangboard 7 is placed between them, and then,
This is a method of horizontally moving the heavy object A between the deck 1 and the top surface 6 of the quay.

In the figure, 8 is a pump chamber inside the hull B, and 9 is an inlet and a suction valve for inhaling and discharging seawater, which are provided on the ship's side wall of each tank 5. Connected to the pump with piping.

10 is the pump and seawater suction valve operation panel on the 1st floor of the deck, and 11 is the safety bulwark on the edge of the deck.

Next, to explain the work method in detail, the floating hull B
Temporarily moor it at the position shown in the plan view of Figure 1 using a towboat or mooring line, and move the ff1u object such as a truck or container.
Before moving the hull B, seawater is poured into the tank 5 of the hull B as ballast water to sink the hull F, and the hull B is placed on the sinking surface 3.
to sink. After the hull [3] has sunk, even if there is no towboat or mooring line, the frictional force between the bottom surface 2 of the hull B and the sunken seat 3 causes the hull B to move (.In this state, the upper surface of the quay 6 and the deck 1 of the hull Since it is the same and horizontal plane as the 1-plane, if the gangplank 7, which is pivoted on the wharf side, is hung in the gap,
Roll on/off] land by J formula 1. From ship fGl-
, -\ Small armpit A can be easily moved. , 2, the hull 13 is submerged and does not move at all.

After all cargo handling of M91JA is completed, the ballast water in the tank 5 is discharged, and the hull 13 becomes floating and can be easily sailed, so it can be sailed by tugboat to the destination port. send Then, after mooring or sinking it to the /P wall of the destination port in the same manner as shown in Figure 1.2, load other funeral gifts.
A separate hull, characterized by its unique features, is then towed to the dog's destination port. In addition, the thousand moemono of the sunken ship l- are the first,
Move it to quay 1'' in the same way as during the battle in Figure 2.

In the hull 13 having the structure described above, the tanks 5 are divided and arranged so as to ensure the stability of the hull within 1 minute when floating, and the size of the tank 5 is at the highest level at the tidal level. - However, if you do this, the tank will become too large, and it will take a long time to drain the ballast water and make the hull +3 float 1-.
In order to improve this, the tank's intake valve will be left open in the sea until May, and when the tide level rises, the ballast water volume will automatically increase to prevent Hull B from surfacing. On the other hand, if the tide level is F, the ballast water in the tank will be automatically discharged to reduce the amount of ballast water. The amount of ballast water in the hull B or the sinking tank varies depending on the tide level, and when the tide level is low, the amount of ballast water can be reduced, which is efficient.

The suction valve 9 shall be opened or closed only immediately before the forced suction and discharge of ballast water. Also, by doing this, the pressure exerted on the sinking surface 3 from the hull can be eliminated. Further, forced suction and drainage of ballast water is performed by a pump provided in the pump room 8, and the pump and suction valve are operated from an operation panel 10 located on the hull deck LF-.

A bulwark 11 is installed on the side edge of the deck surface to ensure the safety of cargo and human life during cargo handling and voyage. It is also possible to install PA roots on the deck to protect cargo from the wind and rain.

No.: (The figure shows a modification of the present invention.
1 is formed into a concave shape when viewed from the wing surface, and the hull B is drawn into this part. Therefore, the front part of each ship 15 +3° and 13
．． It is possible to carry out cargo handling more easily and reduce the slope of cargo handling time.

As is clear from the explanation in Section 1 below, the present invention is to form the bottom surface of a ship on which heavy objects are to be loaded into a deck surface, and to form a mark at approximately the same depth as the mark from the deck to the bottom of the ship. A sink 88 having a hull sinking section is constructed on the cargo handling quay, and the hull is sunk in the sinking section by injecting last water into its tank, so that the deck and the TP wall surface are approximately connected. Same -Wed/F-
+Mi, and a gangplank is placed between them, and then the heavy objects are moved between the deck and the quay side 1). 1. Even if it is II, it will not tilt during cargo handling, and it can be expected that it will have a flat effect that allows cargo handling to be carried out easily while ensuring stability.

[Brief explanation of the drawing]

Figure 1 shows an embodiment of the present invention. Figure 2 is a vertical sectional side view of the same. Figure 3 shows a modified example of the present invention.
It is a front view. A: City 4 objects, I3: Ship main, C: Quay, 1: Deck, z
: -bottom, 3: hull sinking surface, 4: sinking section, 5: tank, 6: throat wall 1-side, 7: gangplank, 8: pump room, 9: suction port and suction valve. Applicant Namura Shipbuilding Co., Ltd. Agent Tsunehisa Nakamura

Claims (1)

[Claims] The bottom of the hull on which heavy objects are to be loaded is formed into a flat surface, and a sinking section is constructed on the cargo handling quay that has a hull sinking surface that is approximately the same depth as the depth from the deck to the bottom of the hull. Then, the hull is placed on a sinking surface by injecting ballast water into its tank, the deck and the upper surface of the quay are maintained on almost the same horizontal plane, and a gangplank is placed between them. A method for handling heavy objects using a ship's hull, characterized by horizontally moving the cargo between the deck and the quayside.