JPH0768033B2 - Container transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to the unloading of a docked container ship to a quay,
Alternatively, it relates to a container transfer device newly developed to improve the work efficiency of loading from a quay to a container ship.

“Conventional technology” Conventionally, container cranes have been used for unloading and loading containers on the quay and between the docked container ships.

FIG. 4 shows a conventional example thereof, in which reference numeral 1 is a container crane, 2 is a container ship, and 3 is a container loaded on the container ship 2.

The container crane 1 is permanently installed on the quay 4, and the girder 6 is horizontally supported by the frame body 5 toward the sea side, and its length can be extended to the tip of the girder 6. A boom 7 is vertically rotatably connected to the trolley 8 that moves along the girder 6 and the boom 7.
Further, a spreader 9 which is a container hanging tool is provided to be vertically movable by a hoisting device 10. Further, in the frame main body 5, the tips of the legs 11 spaced apart from each other are placed on the guide rails 12 laid along the quay 4, and the guide rails 12 allow the hull longitudinal direction of the container ship 2 to move. It is possible to move to. In addition, the frame body 5 has a container 3
Is provided with an intermediary stand 14 on which is temporarily placed, and an auxiliary girder 15 that is horizontally disposed above the intermediary stand 14, and the auxiliary girder 15 is equipped with a container suspending tool 16 to provide the auxiliary An auxiliary trolley 17 capable of traveling along the girder 15 is provided.

The cargo handling work using the container crane 1 as described above will be described below by taking the case of unloading as an example.

First, as shown in FIG. 4, the boom 7 is projected on the docked container ship 2, and then the trolley 8 is attached.
Are reciprocated along the girder 6 and the boom 7, and the containers 3 loaded on the container ship 2 are sequentially transferred to the relay stand 14 one by one. Then, the container 3 carried on the relay stand 14 is a chassis (carriage) 18 which sequentially runs on the quay 4 by the container suspension 16 of the auxiliary trolley 17 until the trolley 8 carries the next container 3. And is transported by the chassis 18 to the desired location.

"Problems to be Solved by the Invention" By the way, in the container crane 1 as described above,
As can be seen from FIG. 4, the transportation distance of the container 3 by the auxiliary trolley 17 is much smaller than the transportation distance of the trolley 8, and therefore, the time required to unload one container 3 is predetermined by the trolley 8. The time from when the container 3 is located above the container 3 to when the container 3 is moved to the relay stand 14 and returned to the next container 3 to be unloaded again (hereinafter referred to as cycle time). It is necessary to shorten the cycle time of the trolley 8 in order to shorten the work efficiency and improve the work efficiency.

As one of the methods for shortening the cycle time, it is possible to increase the traveling speed of the trolley 8 and the ascending / descending speed of the spreader 9 in the container crane 1.
With such a method, it is difficult to significantly reduce the length in terms of design, and it is still good when a new container crane 1 is installed, but when using an existing container crane 1,
Substantial modification is necessary and practically impossible.

Further, in general, this type of container crane 1 is designed such that the length of the boom 7 is the maximum width of a so-called Panamax type ship, and the boom 7 of the ship is larger than the width of the ship. Since the tip does not reach the side edge of the hull, the work efficiency is extremely poor. In such a case, the effect cannot be improved by the method of increasing the traveling speed of the trolley 8 or the traveling speed of the spreader 9 described above. .

The present invention has been made in view of the above circumstances, and effectively utilizes the cycle time of the trolley in the container crane even when using an existing container crane or in the case of a ship having a very large hull width. It is an object of the present invention to provide a container transfer device that can be significantly shortened and therefore can significantly reduce the working time and efficiency of container handling.

"Means for Solving Problems" The container transfer device according to the present invention is installed on a container guide erected on the deck of a container ship and used in combination with a container crane installed on a quay. With a body frame that has a height dimension capable of accommodating a container and is arranged on a container guide that is erected on a container ship and can run in the width direction of the hull, and a hoisting device provided in the upper frame of this body frame. A spreader that is hung up and down so as to suspend the container, and a relay container cradle that is supported by the lower frame of the main frame so that it can travel in the width direction of the hull and that moves forward and backward to open and close the lower part of the main frame. It has a built-in configuration.

"Operation" The container transfer device according to the present invention is installed and used on a container guide which is erected on the deck of a container ship docked at a shore, and is used in series in cooperation with a container crane provided on the quay side. Carry out cargo.

The main body frame of this container transfer device is installed on the upper end of a container guide erected on the deck through a rail or the like so that the spreader can move in and out of the loading place of the container. The traveling means allows traveling in the width direction of the hull.

The container loading and unloading by this device will be described below by taking an example of unloading from a container ship to a chassis on the quay.

First, as shown in FIG. 3, the main body frame is moved above the container to be unloaded first, and the spreader is positioned right above the container to be unloaded. Then, the relay container cradle is retracted from below the spreader so that the bottom of the main frame is opened. Then, next, the spreader is lowered to grip the containers loaded in the container ship as shown in FIG. And next is the first
As shown in the figure, lift the spreader to pull up the container, stop the spreader when the bottom end of the container is slightly above the relay container cradle, and move the relay container cradle below the spreader. To close the bottom of the body frame. Then, next, the spreader is lowered and the suspended container is placed on the relay pedestal, the grip by the spreader is released, and the relay container pedestal is retracted to the outside of the main frame.

Then, as shown in FIG. 3, the spreader suspended on the trolley of the container crane is lowered to raise the container placed on the relay cradle,
In the following, the trolley on the container crane is run in the same way as in the past to lower the container to the chassis on the quay,
Meanwhile, the container transfer device takes out the second container from the inside of the ship by the same operation as described above. Further, in order to meet the trolley of the container crane that returns after dropping the first container on the chassis, the main frame is moved toward the quay side. The position where the trolley of the container crane and the container transfer device meet is the position of the chassis on land, the position of the container next loaded by the container transfer device, the position of the trolley and the container transfer device at the present time, etc. From this, the optimum position is calculated so that there is no waiting time.

At the point where they met, the trolley of the container crane and the container transfer device were stopped running, and the containers were transferred between them. The container transfer device picked up the third container, and the container crane took the second container to the chassis. Go down The same operation is repeated thereafter.

When the cargo handling is performed as described above, for the second and subsequent containers, the traveling distance of the trolley on the container crane is reduced by the distance that the container transfer device travels and approaches the quay. As a result, the cycle time of the trolley on the container crane is greatly shortened, and the working time and efficiency of container handling can be significantly shortened.

Further, by using such a container transfer device, even in the case of a hull whose hull width exceeds the maximum value of the Panamax type, it is sufficient to run the container transfer device within a range that the container crane cannot reach. Even in the case of a ship having a very large hull width, the container transfer device can be effectively used, and the work / efficiency of container handling can be significantly reduced.

"Embodiment" FIGS. 1 to 3 show an embodiment of a container transfer apparatus according to the present invention.

Reference numeral 20 in these figures is a container transfer device, and the parts common to the conventional ones such as the container crane and the container ship are given the same numbers to simplify the description.

As shown in FIG. 1, the container transfer device 20 has a height dimension capable of accommodating the container 3 and is arranged on a container guide G which is erected on the deck of the container ship 2. A main body frame 21 that can travel in the width direction of the hull, a hoisting device 22 attached to an upper frame 21a of the main body frame 21, a spreader 23 that is vertically held by the hoisting device 22 and that suspends the container 3, A relay container cradle 24 is provided so as to be capable of advancing and retracting in the horizontal direction so as to open and close the lower portion of the main body frame 21.

The above-mentioned container guide G is a frame that is erected on the deck 2a of the container ship 2 in order to save manpower required for lashing, and is loaded on the deck 2a as shown in FIGS. 1 and 2. A gap C between the containers 3 is also provided upright. And
On the upper frame G ₁ of the container guide G, a rail 25 serving as a traveling path of the container transfer device 20 is extended along the width direction of the hull.

The main body frame 21 is provided with traveling wheels 21c at the lower ends of legs 21b located at both ends of the upper frame 21a, and the traveling wheels 21c are set on the above-mentioned rail 25, and are not shown. When the traveling wheels 21c are driven by the drive device, the traveling wheels 21c can travel along the rails 25 from end to end of the hull, and as a result, the trolley 8 of the container crane 1 installed on the quay 4 side. It is possible to drive in the same direction as the trolley 8 directly below. The setting of the main body frame 21 or the container transfer device 20 itself on the container guide G is performed by the container crane 1 on the quay side.

The relay container cradle 24 is a leg 21 of the main body frame 21.
It is installed on a lower frame 21d that extends horizontally from the bottom of b.

On the lower frame 21d, a rail 27 is laid along the width direction of the hull, while on the other hand, the relay container cradle 24 is provided with traveling wheels 28 for riding on the rail 27. Container drive for relay by drive
24 is capable of advancing and retreating in the width direction of the hull, and when retreating outward, the lower part of the main body frame 21 is opened so that the container 3 can be inserted into the main body frame 21, and when advancing inward, the main body frame 21 The lower part is closed and supports the pulled-up container 3. Then, as the relay container cradle 24 retreats outside, as shown in FIG. 2, the container 3 received in the main body frame 21 is carried out of the main body frame 21.

The drive device for causing the main body frame 21 to travel is controlled by a control device (not shown).

This control device is a position detecting device for detecting the position of the chassis 18 on land, the position of the container 3 loaded by the container transfer device 20, and the current position of the trolley 8 and the container transfer device 20. And a calculation device that receives signals from these position detection devices and calculates the movement distance of the main body frame 21 so that the cycle time of the trolley 8 becomes the shortest. The position where the container transfer device 20 and the trolley 8 meet is automatically adjusted.

The container transfer device 20 as described above is installed on the container guide G of the container ship 2 which is docked by the container crane 1 or the like provided on the quay 4 side. Carry out cargo.

The case of unloading the container by the device 20 from the container ship 2 to the chassis 18 on the quay 4 will be described as an example.

First, as shown in FIG. 3, the main body frame 21 is moved above the container 3 to be unloaded first, and the spreader 23 is positioned right above the container 3 to be unloaded. Then, the relay container cradle 24 is retracted from below the spreader 23 to open the bottom of the main body frame 21. And
Next, the spreader 23 is lowered to grip the containers 3 loaded in the container ship 2 as shown in FIG. Then, as shown in FIG. 1, the spreader 23 is raised to pull up the container 3, and when the lower end position of the container 3 reaches a position slightly above the relay container cradle 24, the spreader 23 is stopped from rising. , The relay container cradle 24 is advanced below the spreader 23 to close the lower part of the main body frame 21. And then the spreader
The container 3 that has been lowered and lifted 23 is placed on the relay container pedestal 24, then the spreader 23 releases the grip, and the relay container pedestal 24 is withdrawn to the outside of the main frame.

Then, as shown in FIG. 3, the spreader 9 suspended on the trolley 8 of the container crane 1 is lowered, and the container 3 placed on the relay cradle 24 is placed.
After that, the trolley 8 on the container crane 1 is run in the same manner as in the past to lower the container 3 onto the chassis 18 on the quay 4, while the container transfer device 20
Removes the second container 3 from the hull by the same operation as described above. Then, further, the main body frame 21 is moved toward the quay 4 side so that the first container 3 can be lowered onto the chassis 18 and can be met with the trolley 8 of the container crane 1 returning at an earlier time. Trolley 8 of container crane 1 and the container transfer device 20
The position where the container is to be met is the position of the chassis 18 on the land, and then the container 3 loaded by the container transfer device 20.
The optimum position that eliminates the waiting time is calculated from the position of No. 3, the current position of the trolley 8 and the position of the container transfer device 20, and the like.

And at the spot we met, trolley 8 on container crane 1
And the container transfer device 20 is stopped to transfer the container 3 between them, the container transfer device 20 takes out the third container 3, and the container crane 1 transfers the second container 3 onto the chassis 18. I'll go down. The same operation is repeated thereafter.

When the cargo handling is performed as described above, for the second and subsequent containers 3, the traveling distance of the trolley 8 on the container crane 1 by the distance that the container transfer device 20 travels and approaches the quay 4. Since the cycle time of the trolley 8 on the container crane 1 is significantly shortened, the working time and efficiency of container handling can be significantly shortened.

Further, by using such a container transfer device 20, even in the case of a ship whose hull width exceeds the maximum value of the Panamax type, the container transfer device 20 is allowed to travel within a range that the container crane 1 cannot reach. Even if the vessel has a very large hull width, the container transfer device 20 can be effectively used, and the work / efficiency of container handling can be significantly reduced.

In addition, in the above-described embodiment, the container transfer device 20 is configured to travel on rails, but it may be a trackless type that does not use rails, or a combination of rack and pinion.

"Effects of the Invention" As is clear from the above description, the container transfer device of the present invention has a height dimension capable of accommodating a container and is arranged on a container guide which is erected on the container ship and has a hull width. The main body frame that can run in any direction, the spreader that is suspended by the hoisting device provided in the upper frame of the main body frame to suspend the container, and the horizontal direction that opens and closes the lower part of the main body frame. It is equipped with a deployed container container cradle for relay, and can be easily installed on the container guide of a docked container ship by using a container crane provided on the quay side. it can. Then, a series of cargo handling is performed in cooperation with the container crane. In that case, the container transfer device of the present invention appropriately operates a hoisting device, a spreader, a relay container cradle, etc. provided in the device. By doing so, the container can be freely transferred between an arbitrary loading place on the container ship and the relay container cradle, and
With the traveling function equipped on the main frame, it is possible to transport the container to any position along the traveling of the trolley of the container crane, and therefore, transfer of the container to and from the trolley of the container crane is carried out along the traveling route of the trolley. Can be done at any position.

Then, while the trolley of the container crane is loading and unloading the container with the chassis of the quay, the container transfer device finishes the loading and unloading on the hull and enables the next container to be transferred more quickly. If the container transfer device moves to the quay, the traveling distance of the trolley on the container crane is reduced by the distance that the container transfer device comes close to the quay, which significantly shortens the cycle time of the trolley on the container crane. It is possible to significantly reduce the work time and efficiency of cargo handling.

Further, by using such a container transfer device, even in the case of a ship whose hull width exceeds the maximum value of the Panamax type, it is sufficient to run the container transfer device in a range that the container crane cannot reach. Even in the case of a very wide ship, the container transfer device can be effectively used, and the work / efficiency of container cargo handling can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the container transfer device according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is a use explanatory view of the embodiment, and FIG. 4 is a conventional cargo handling method. FIG. 2 ... Container ship, 2a ... Deck, 3 ... Container, 4 ...
… Quay, 8… Trolley, 18… Chassis, 20… Container transfer device, G… Container guide, 21… Main frame,
21a …… upper frame, 22 …… winding device, 23 …… spreader, 24 …… container stand during relay, 25 …… rail, 27 …… rail, 28 …… traveling wheels.

Claims (1)

[Claims] 1. A body frame having a height dimension capable of accommodating a container (3) and arranged on a container guide (G) provided upright on the container ship (2) and capable of traveling in the width direction of the hull ( 21), a spreader (23) for suspending the container by hanging it up and down by a hoisting device (22) provided on the upper frame (21a) of the body frame, and a hull on the lower frame (21d) of the body frame. A container transfer device which is movably supported in the width direction of the container and has a relay container cradle (24) for opening and closing the lower part of the main body frame by its forward and backward movement.