JPS5853635B2 - Ship cargo handling equipment - Google Patents

Description

[Detailed description of the invention] Roll commonly performed on ferry boats etc.
On-Roll-off cargo handling (abbreviated as Ro-Ro method) is a method in which a movable ramp (referred to as a rampway) is passed between the ship and the quay, and the cargo is run on this ramp using the power of automobiles to enter and exit the ship. This method has the advantage of shortening cargo handling time, and has recently been adopted by some cargo ships.
In most cases, a dedicated quay is required to use the Ro-Ro method.

This is because in Ro-Ro cargo handling, when loading self-propelled cargo such as trucks, the angle of the rampway is usually 7 degrees to prevent the lower part of the body from touching the rampway.
The length of the rampway is determined so that the ship's stagnation is constantly controlled using ballast water.

Therefore, when the difference in height of the quay increases, RoRo
The method becomes very difficult.

For this reason, it is normal to have a rampway as onboard equipment that matches the quay, and like a general cargo ship, loading and unloading at each port,
In the case of unloading at each port, the tidal difference in the height of the rock wall varies depending on the port, and the rampway that satisfies all the conditions of each port is long, so in most cases RoRo method cargo handling is carried out at a dedicated quay. limited to ships with

The purpose of the present invention is to provide a cargo handling device on a ship that enables RoRo type cargo handling regardless of the height of the quay and the tidal difference, even if it is not a dedicated quay.The present invention achieves this objective. In order to do this, a platform that moves horizontally up and down is installed at the stern of a ship equipped with multiple cargo holds via link members with a length corresponding to the height between each cargo hold.
This platform is equipped with a rotatable rampway that can span between quays, and by moving the platform up and down to match the location of the quay, cars, forklifts, etc. can run on their own regardless of the height of the quay, even if it is not a dedicated quay. It is characterized by the fact that it enables RoRo cargo handling.

An embodiment of the present invention will be described below with reference to the drawings.

The hull 20 is formed with a lower cargo hold 1 and an upper cargo hold 2. At the rear of each cargo hold 1 and 2, a lower link 5 and an upper link 6 are rotatably provided. ,6
The platform 4 forms a parallel link together with a post 14, which will be described later, and the platform 4 is held horizontally at all times by the parallel link.

The platform 4 is provided with pillars 14 at the four corners,
A ceiling frame 14' connecting the tops of the four pillars 14 is provided, and a pulley 7 is attached to the center of the ceiling frame 14', and the pulley 7 is suspended by the stern pillar 3 via a wire 8. There is.

A winch 9, which is an actuator, is attached to the stern support 3.
By winding up and lowering the winch 9, the platform 4 can move up and down while always keeping it horizontal.

At the rear of each cargo hold 1 and 2 there is a rear door 10.11.
It can be opened and closed during cargo handling.

A quay rampway 12 is installed on the platform 4 so as to be continuous with the quay wall 13, and is held by a wire from a support 14 of the platform.

Furthermore, the lower link 5 is taut from side to side to form a rampway for use as an inboard cargo hold.

Furthermore, since the lengths of the upper and lower links 5 and 6 are the same as the height 15 of the lower cargo hold, the highest position when the winch is hoisted will be at the same level as the upper cargo hold deck, and the platform 4 will be at the same level as the upper cargo hold deck 2. It will stick to the rear end.

Therefore, the upper cargo hold 2 does not require a rampway.

Platform 4 of this device consists of links 5 and 6 and support column 1.
A parallel link is formed with 4, and by the parallel link,
The platform 4 can be moved up and down by a winch 9 while always maintaining a horizontal state.

Therefore, in that the platform 4 moves up and down while always remaining horizontal simply by hoisting it up with the winch 9, it is simple and can be manufactured at low cost even if it is heavy compared to a normal elevator or the like.

Figures 3 and 4 show examples of how this device is used. Figure 3 shows the case where cargo is loaded into the upper cargo hold 2, where the platform 4 is at the highest position and is on the same level as the upper cargo hold 2. .

Self-propelled cargo 21 such as a forklift or truck first passes through the quay rampway 12 and moves to the platform 4, where it further enters the ship.

In this case, if a turntable or the like is installed on the platform 4, even a large truck can be loaded sufficiently.

In addition, if the quay is lowered and the angle of the rampway 12 for the quay becomes steeper in the state shown in Fig. 3, lower the platform 4 from the level of the upper cargo hold 2 until the angle of the rampway 12 becomes gentler, and lower the ramp. The angle of the way 12 may be adjusted.

In this case, the self-propelled cargo 21 is moved onto the platform and then stopped there. In this state, the platform 4 is rolled up to make the upper cargo hold (deck) 2 and the platform 4 on the same level, and the self-propelled cargo 21 is moved onto the platform. Proceed to cargo hold 2.

Figure 4 shows the loading and unloading state of self-propelled cargo 21 to the lower cargo hold 1, passing through the quay rampway 12 to the platform 4.
, and travels by itself to the lower cargo hold 1 via the lower link 5, that is, the inboard rampway.

The point that the height of the platform 4 is adjusted depending on the height of the quay is the same as in the previous example.

FIG. 5 shows another embodiment of the present invention in which the present device is installed at the stern of a bond carrier.

In this example, the platform 4 is installed so as to be submerged, and rollers 23 are installed on the platform, and similar rollers 23 are installed on each deck and lower link 5 on which the ropes are loaded.

The barge 24 floating on the water is pushed by a tug boat or the like above the platform.

Next, winch 9 is hoisted to raise the platform, and the bonds are scooped onto the platform.

After that, raise the boat to the designated deck, adjust the level, and move the boat onto the rollers.

Also, at this time, a transport cart with a lift-up mechanism may be used instead of the rollers.

The same thing applies when loading bonds onto the upper deck.

According to this example, the bonds can be easily loaded into the ship from the water without using complicated and expensive equipment such as an elevator.

Further, in this embodiment, the platform is hoisted up from above by a winch, but it goes without saying that this may be operated by a hydraulic cylinder or other device.

As described above, in the present invention, a platform can be horizontally moved up and down via a plurality of link members having a length corresponding to the height between each lead section at the stern of a ship equipped with a multi-layer cargo hold. Since the platform is mounted and rolled up from above using a winch, etc., the platform can be moved up and down while always maintaining a horizontal state.

Therefore, the device of the present invention enables RoRo cargo handling by adjusting the height of the platform even if the height of the quay is different or the tide level changes, and can be smoothly handled in both multi-story cargo holds. ■ Normal elevators that move up and down horizontally between cargo holds require extremely complex controls such as winches and motors to align the platform surface with the deck surface. In the invention, since the lengths of the multiple links match the height between the decks, the plant form and the deck surface can be matched by simply pulling it upward with the actuator, eliminating the need for a complex control device and reducing costs. Cargo floating on the water can be loaded into a cargo hold by submerging the platform in the water, and the vessel can be used as a purge carrier (#transport vessel), making it highly practical. There is.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of the stern of a ship in which the device of the present invention is installed;
FIG. 2 is a plan view of the same, FIGS. 3 and 4 are diagrams of the cargo handling state, and FIG. 5 is a longitudinal sectional view of the stern section showing another embodiment of the present invention. 1...Lower cargo hold, 2...Upper cargo hold, 3...Stern support, 4...Platform, 5...Lower link , 6... upper link, 7... pulley, 8... wire, 9... winch, 12... ramp way, 13... ... quay, 14... pillar,
15... Height of lower cargo hold, 20...
Hull, 21...Self-propelled cargo.

Claims (1)

[Claims] 1 A platform is provided at the rear of the hull of a ship equipped with multiple cargo holds, and this platform is connected by multiple link members with a length corresponding to the height between each cargo hold, and is maintained in a horizontal state by an actuator. A ship's cargo handling device configured to be able to move up and down.