JPH0768029B2 - Ship container crane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a container ship between a container ship and a container crane when the container ship is docked by a quay container crane installed on the berth. The present invention relates to a container transfer device that transfers on the deck of a container ship while delivering it.

“Prior Art” Conventionally, when carrying out cargo handling with a container ship docked on a quay, for example, a quay container crane as shown in FIG. 3 is used. This quay container crane
Reference numeral 30 denotes a permanent member provided on the quay 3, and a horizontal girder 20 is supported by a support leg 19 movable along the quay 3 toward the sea side. The boom 21 is vertically rotatably connected so as to extend the length,
A trolley that moves along these girders 20 and booms 21.
22 is provided with a container suspension 23, and the support leg 19 is provided with a relay stand 31 for receiving the container 8 and an auxiliary girder 32 horizontally arranged above the relay stand 31. An auxiliary trolley 33 that transfers the container 8 is movably supported between the relay stand 31 and the chassis 25 on land.

And, the boom 21 of this quay container crane 30
As shown in the figure, with the container vessel 4 docked on the shore, the trolley 22 is reciprocated along the boom 21 and the girder 20, while the containers 8 on the container vessel 4 are lifted one by one and relayed. While transferring to the table 31,
Transfer from the relay stand 31 to the chassis 25 by the auxiliary trolley 33 is performed sequentially.

[Problems to be Solved by the Invention] However, with such a technique, as can be seen from FIG. 3, the auxiliary trolley 33 reciprocates a short distance between the relay stand 31 and the chassis 25. On the other hand, the trolley 22 moving along the girder 20 and the boom 21 reciprocates over a long distance between the quay 3 and the side end of the container ship 4, so that the trolley 22 is on the container ship 4. The time from when the container 8 is positioned above the container 8 to when the lifted container 8 is transferred to the relay stand 31 and returns to the container ship 4 again before being positioned above the container 8 to be transferred (hereinafter, The time required for one round trip is called cycle time)
However, it becomes longer than the cycle time of the auxiliary trolley 33, and therefore the working time as a whole is determined by the cycle time of this trolley 22, which tends to lengthen the time and the cycle time of both trolleys 22 and 33. The difference causes a long waiting time in the auxiliary trolley 33. in this case,
It is possible to increase the traveling speed of the trolley 22, but there is a limit in terms of design. Generally, this type of quayside container crane is designed so that the length of the boom 21 is the maximum width of a so-called Panamax type container ship, and the boom 21 is larger for container ships wider than that. There is also a problem that the efficiency of the work is significantly deteriorated because it does not reach the side edge.

The present invention has been made in view of the above circumstances, shortens the container transfer distance that the quayside container crane is responsible for, shortens the cycle time thereof, and improves the efficiency of the work as a whole to reduce the cargo handling time, Moreover, it is an object to prevent the cargo handling efficiency from being impaired even in the case of a container ship having a large hull width.

"Means for Solving Problems" The present invention is an onboard container crane that transfers on a deck of a container ship while delivering a container to and from a quay container crane so as to take part in cargo handling work, A gate-shaped support frame that is placed on both sides of the deck of the container ship and that runs in the length direction of the container ship across the width direction of the container ship, and is arranged in parallel to the support frame along the length direction of the container ship. A pair of horizontal girders and a plurality of trolleys mounted on the horizontal girders so as to be movable in the width direction of the container ship, and a container gripping spreader suspended on the trolleys with a winding machine interposed. And a container cradle for delivering the container between the container gripping spreader and the quayside container crane at the position below the hoist. ing.

[Operation] The onboard container crane of the present invention is mounted on the deck of a container ship, and when the container cradle is open, the container is transferred between the horizontal girders and the quay container crane. While carrying out, the container is suspended by the spreader and transferred in the width direction of the container ship along the horizontal girder, thereby burdening the container transfer work on the container ship and shortening the container transfer distance by the quayside container crane, By moving the cradle along the horizontal girder every time a container is loaded and unloaded, and moving the container relay position to the quay container crane, the berth container crane can be moved according to the container loading position, etc. Of the cycle time between the ship and the container crane itself is the smallest It is possible to relay at a position where the signals are to be combined, and it is possible to shorten the waiting time for both relays.

"Embodiment" Hereinafter, an embodiment of an onboard container crane according to the present invention will be described.
A description will be given with reference to FIGS.

In the figure, reference numeral 1 denotes a shipboard container crane according to the present invention, and reference numeral 2 denotes a quayside container corane installed on the quayside 3, respectively.

This onboard container crane 1 is a deck 5 of a container ship 4.
Across the width direction of the container ship 4 on both sides of the deck 5.
It has a gate-shaped support frame 6 that runs in the longitudinal direction of the.
That is, in the support frame 6, legs 9 higher than the loading height of the container 8 on the deck 5 are arranged at both ends of a pair of horizontal girders 7 formed to have a length substantially the same as the width of the deck 5. As shown in FIG. 2, the two horizontal girders 7 are connected to each other at an interval larger than that of the single container 8, and the lower ends of the legs 9 can travel horizontally in the connecting direction of the two horizontal girders 7. Wheels 10 are provided on the. Then, rails (not shown) are laid on both sides of the deck 5 in the longitudinal direction of the container ship 4, and the support frame 6 is provided on the rails.
Will be installed.

As shown in FIG. 2, each horizontal girder 7 of the support frame 6 has a pair of right and left rails 11 and 12 laid along the lengthwise direction. A trolley 13 is mounted so as to be stretched between the horizontal girders 7, and a hoisting machine 14 is fixed to the central part of the trolley 13, and a spreader for holding a container is provided on the hoisting machine 14 by passing between the two horizontal girders 7. Fifteen are suspended. On the other hand, trolleys 16 are respectively mounted on the outer rails 12, and two support rods 17 are vertically arranged on the trolleys 16 so as to be suspended from the outside of the horizontal girder 7. A container cradle 18 is horizontally provided at the lower end of 17 so as to integrally connect them. The support rod 17 forms an interval between the trolley 13 supporting the hoisting machine 14 and the pedestal 18 so that the spreader 15 can pass while suspending one container 8. The pedestal 18 may be configured so that its height can be changed and a plurality of containers 8 can be placed as needed.

Further, to supplement the description of the quayside container crane 2, in the illustrated example, the quayside container crane 2 has a support leg 19 movable along the quay 3 with a horizontal girder 20 facing the sea side. Supported and the girder
A boom 21 is vertically rotatably connected to the tip of the girder 20 so that its length can be extended.
A trolley 22 moving along the trolley 22 is provided with a suspender 23 for suspending the container 8. Of course, it is also possible to use the container crane 30 having the relay stand 31 and the auxiliary trolley 33 as shown in FIG.

Next, a case where the container 8 on the deck 5 is loaded by using the onboard container crane 1 and the like configured as described above will be described.

As shown in Fig. 1, the boom 21 of the quay container crane 2
Is placed above the container ship 4 on which
With the onboard container crane 1 mounted on the container ship 4,
The horizontal girder 7 is supported above one hatch 24 in which the container 8 is housed along the width direction of the container ship 4, and the container cradle 18 is, for example, a side end of the container ship 4 on the quay 3 side (first Place it on the left edge of the figure. Then, with the hoisting machine 14 placed above the container 8 on the deck 5, the single container 8 is suspended by the spreader 15, and then the trolley 13 is directed toward the quay 3 side along the horizontal girder 7. The container 8 is moved to a position above the cradle 18 and the container 8 is placed on the cradle 18. After placing this container 8 on the pedestal 18, it is rewound.
14 is returned to above the container storage and the next container 8 is transferred. On the other hand, the trolley 22 of the quay container crane 2
While reciprocating along the girder 20 and the boom 21, the container 8 on the cradle 18 is hung from between the horizontal girders 7 and sequentially transferred to the chassis 25 on the quay 3. That is, the cargo handling work as a whole is divided into two on the container ship 4, and both works are performed in parallel. Also,
In this case, the cradle 18 is also horizontal girder depending on the loading position of the container 8 in the container storage area on the deck 5, the position of the hoisting machine 14 and the trolley 22 of the quayside container crane 2 each time one container 8 is loaded. 7 is carried out. For example, when the quayside container crane 2 suspends the container 8 received from the hoisting machine 14, the next container 8 is carried from the current position of the hoisting machine 14 at that time. Until the empty trolley 22 of the quayside container crane 2 returns to a position where the difference between the cycle time up to the time and the cycle time until the empty trolley 22 returns is minimized. After the loading of the container 8 in one hatch 24 is completed, both container cranes 1 and 2 may be moved in the length direction of the container ship 4 by the same pitch to load the container 8 of the next hatch. Done.

That is, the onboard container crane 1 takes charge of the work on the container ship 4 out of the two container transfer operations, so that the trolley 22 of the quayside container crane 2 is handled.
To shorten the cycle time by shortening the cycle time of the trolley 22 by shortening the container transfer distance to about half of the whole, for example.
The cycle time of the trolley 13 supporting the trolley can be approached, and the cradle 18 is moved every time each container 8 is loaded and unloaded, so that the optimum responsiveness to the loading position of the container 8 in the container storage place that changes sequentially due to the loading and unloading can be achieved. The relay position can be set, and the waiting time of both trolleys 22 and 13 near the cradle 18 can be shortened to improve work efficiency.

The onboard container crane 1 may be permanently installed on the container ship 4, or may be permanently installed on the quay 3 and mounted on the berthed container ship 4 by the quayside container crane 2. Further, in the above description, an example in which the container 8 loaded on the container ship 4 is transferred onto the quay 3 has been shown, but it goes without saying that the container 8 can be transferred from the quay 3 to the container ship 4 by the reverse procedure.

[Advantages of the Invention] As described above, the onboard container crane of the present invention relays the container between the spreader and the quayside container crane via the cradle on the deck of the container ship, and the container is spread by the spreader. Since it is transferred in the width direction of the container ship along the horizontal girder to bear the container transfer work on the container ship, the container transfer distance by the quay container crane can be shortened and the cycle time can be shortened. At the same time, the cradle is moved along the horizontal girder every time one container is loaded, and the quayside container crane cycle required to transfer the container is changed according to the container loading position in the container storage that changes sequentially due to the loading and unloading of the container. Relay position that minimizes the difference between the time and the cycle time of the onboard container crane itself Therefore, it is possible to shorten the waiting time for relaying the two, improve work efficiency, and shorten the work time as a whole. In addition, since it is mounted on a container ship and the container is transferred on the container ship, even in the case of a container ship with a larger hull width than the existing container crane, it is possible to use the quay container crane to carry out cargo effectively. The work efficiency is not impaired. Further, since the spreader for transferring the container and the container cradle for the relay are both supported by the horizontal girder of the supporting frame, it is possible to accurately guide the movement of these at the time of relaying and to support the supporting frame. Since it is placed on the deck in the closed state, the operations of hoisting and hoisting the containers are stable, and the effects such as the accuracy of container hoisting can be enhanced.

[Brief description of drawings]

FIG. 1 is a front view showing a state where the onboard container crane of the present invention is mounted on a docked container ship, and FIG. 2 is a front view of FIG.
An enlarged cross-sectional view taken along the line II-II, and FIG. 3 are front views showing a quayside container crane used for conventional container loading and unloading work. 1 ... board container crane, 2 ... quay container crane, 3 ... quay, 4 ... container ship, 5 ... deck, 6
...... Support frame, 7 ...... Horizontal girder, 8 ...... Container, 9
...... Legs, 10 ...... wheels, 11 ・ 12 …… rails, 13 …… trolleys, 14 …… winders, 15 …… spreaders, 16 …… trolleys, 17 …… support rods, 18 …… cradles, 19 ...... Supporting legs,
20 …… Girder, 21 …… Boom, 22 …… Trolly, 23 …… Hangers, 24 …… Hatch, 25 …… Chassis.

Claims (1)

[Claims] 1. A deck of a quayside container crane and a container ship when loading and unloading a container (8) between a quayside container crane (2) installed on a quayside (3) and a docked container ship (4). An onboard container crane (1) for delivering containers to and from the upper position of (5), which is arranged on both sides of the deck of the container ship and travels in the length direction of the container ship across the width direction of the container ship. A gate-shaped support frame (6), a pair of horizontal girders (7) arranged in parallel to the support frame along the length direction of the container ship, and these horizontal girders are movable in the width direction of the container ship A plurality of trolleys (13, 16) mounted on the trolley, and a spreader (15) for holding the container, which is suspended by interposing the hoisting machine (14), and a container at a position below the hoisting machine. Gripping spray And shipboard container cranes, wherein a container cradle passing containers with the quay container crane (18) are disposed.