JPH0818788B2 - Container crane - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a container crane, and more particularly to a container transfer path by a trolley in a crane body and a container transfer path by a container loading / unloading device. A crane for loading and unloading with an intermediary of a relay stand for relaying a container between the container stand and the container crane capable of moving from the crane body to the container ship side according to the loading / unloading position of the container.

[Prior Art] In a container crane for loading and unloading containers, in order to improve the efficiency of loading and unloading efficiency, the loading and unloading work is carried out mainly by having a first trolley traveling on the sea side and a second trolley traveling on the land side. Things are known.

A container crane having two trolleys of this type has a structure as shown in FIG.

As shown in the figure, a crane main body b is erected on the quay a so that it can travel freely. The quay a on the sea side
A container ship d, which berths and transfers the container c, is moored.

The crane body b has a front leg e located on the sea side and a rear leg f located on the land side, and a first horizontal beam g is supported on these legs e and f.

The first horizontal beam g extends from the crane main body b facing the container ship d side, and a first trolley h is movably provided along the extending traveling path along the traveling path. The first trolley h is a cargo handling rope device i for lifting the container c.
Has a movable up and down.

A second horizontal beam j is provided on the crane body b.

The second horizontal beam j is located below the first horizontal beam g, and is provided so as to horizontally bridge the front leg e and the rear leg f.

A second trolley k is provided on the second horizontal beam j so that the second trolley k can travel freely.
Further, the container c is loaded and unloaded on land from the relay stand 1 which is positioned below the second horizontal beam j and attached.

That is, the container c transferred by the first trolley h
Is once placed on the relay stand 1 and then transferred to the land side via the second trolley k. Therefore, the relay stand 1 connects the cargo handling route by the first trolley h and the cargo handling route by the second trolley k, and forms a relay point for shifting the cargo handling area from the cargo handling route on one side to the cargo handling route on the other side. become.

[Problems to be Solved by the Invention] By the way, conventionally, the cargo handling route by the first trolley h and the second trolley h
The relay stand 1 connecting with the cargo handling route by the trolley k was fixed to the front leg e. Therefore, when the cargo handling route of the first trolley h and the cargo handling route of the second trolley k are compared, the cargo handling route of the first trolley h becomes long. In particular, when a relatively large container ship d berths on the quay a, the container c on the container ship d moves away from the crane body b, so that the cargo handling route by the first trolley h tends to be remarkably long.

Therefore, conventionally, there is a problem that the cargo handling efficiency of the container c is low because the cycle time of the cargo handling work is different between the first trolley h and the second trolley k.

Therefore, the present invention was devised in order to effectively solve the above-mentioned problems, and the cycle time of the cargo handling work of the sea side transfer route and the cycle time of the cargo handling work of the land side transfer route with the relay stand as the relay point. It is possible to set the same,
It is an object of the present invention to provide a container crane capable of significantly improving the cargo handling efficiency of containers.

[Means and Actions for Solving Problems] The present invention relates to a container crane for loading and unloading a container between a land-side transport system and a sea-side container ship,
The first horizontal beam extending from the crane body arranged on the shore such as the quay to the container ship on the sea side and the container ship movably provided on the first horizontal beam A trolley for loading and unloading, a second horizontal beam located below the first horizontal beam in the crane body and provided so as to be extendable on the container ship, and movable along the second horizontal beam. A container loading / unloading device provided for loading and unloading the container with a land-side transport system, and a trolley and a container provided movably on the second horizontal beam between the trolley and the container loading / unloading device. It is composed of a relay stand that moves to a position where the cycle time of the cargo handling work with the cargo handling device is equalized, and relays and transfers the containers to each other.

According to this configuration, the container of the container ship is loaded on the trolley on the first horizontal beam and temporarily transferred to the relay stand on the second horizontal beam, and then the container loading / unloading device on the second horizontal beam from the relay stand. The cargo is loaded and unloaded at the land side transport system. vice versa,
The container of the land side transportation system is loaded and unloaded by the container loading / unloading device on the second horizontal beam, and is temporarily transferred to the relay stand on the second horizontal beam.
Further, the trolley on the first horizontal beam is loaded from the relay stand and transferred to the container ship.

Here, by appropriately moving the position of the relay stand on the second horizontal beam to a position where the cycle time of the cargo handling work of the trolley and the container cargo handling device becomes equal, and controlling the relay position, each of the trolley and the container cargo handling device is controlled. The cycle time is shortened and the cargo handling efficiency is improved. Further, if the second horizontal beam on which the relay stand travels is extended toward the container ship from the crane body installed on the land side, the relay position of the relay stand can be controlled over a wide range. It can also be used for container vessels with a large ship width.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, a crane body 2 is arranged on the quay 1 on the land side, and a container ship 4 for berthing the quay 1 and carrying a container 3 is moored on the sea side.

The crane body 2 has a front leg 5 located on the sea side and a rear leg 6 located on the land side, and the first horizontal beam 7 is attached to these legs 5 and 6.
Is supported.

The first horizontal beam 7 is composed of a girder 8 and a boom 9 and extends horizontally from the crane body 2 to the container ship 4. In order to avoid collision with the container ship 4, the boom 9 is bent upward and stored when the container ship 4 enters and leaves the port.

A trolley 10 for loading and unloading the containers 3 directly on the container ship 4 is provided on the first horizontal beam 7 so that the trolley 10 can travel freely by using this as a travel path. The trolley 10 is provided with a cargo handling rope device 11 for lifting the container 3 so that the container 3 can be moved up and down.

Further, the crane body 2 is provided with a second horizontal beam 12 positioned below the first horizontal beam 7. The second horizontal beam 12 spans the front leg 5 and the rear leg 6 substantially horizontally, and one end of the second horizontal beam 12 is configured to extend freely from the crane body 2 onto the container ship 4. In the present embodiment, one end of the second horizontal beam 12 is configured to be expandable and contractible. That is, at the time of loading and unloading, the second boom 13 in which one end of the second horizontal beam 12 is horizontally extended is formed on the container ship 4 from the crane main body 2, and the second boom 13 is on the crane main body 2 side when the crane is resting. Then, one end of the second horizontal beam 12 extended to the container ship 4 side is reduced and stored.

The second horizontal beam 12 is provided with a container loading / unloading device 14 erected in a box shape so that the second horizontal beam 12 can travel using this as a traveling path. Like the trolley 10, the container cargo handling device 14 has a cargo handling rope device 15 for hoisting the container 3 in a vertically movable manner.

The container loading / unloading device 14 configured in this manner is used in the trolley 10.
To the land side carrier system 16 (chassis) or its carrier system
The container 3 is lifted from the 16 to the trolley 10 and conveyed.

Further, the second horizontal beam 12 having the container handling device 14 is provided with a relay stand 17 along which it can travel.

The relay stand 17 is configured to relay and transfer the container 3 between the trolley 10 and the container cargo handling device 14. That is, the relay stand 17 forms a relay point for transferring the container to the container loading / unloading apparatus 14 (or the trolley 10) after the container 3 conveyed from the trolley 10 (or the container loading / unloading apparatus 14) is once placed. Therefore, the cargo handling route by the trolley 10 and the cargo handling route by the container cargo handling device are connected to each other via this relay point.

Further, the relay stand 17 moves the second horizontal beam 12 so that the cycle time of the cargo handling work of the trolley 10 and the container cargo handling device 14 becomes equal. That is, the cycle time of the cargo handling work in which the trolley 10 travels between the container ship 4 and the relay stand 17 and the cycle time of the cargo work work in which the container cargo handling device 14 travels between the land-side transport system 16 and the relay stand 17 are combined. The relay stand 17 moves the second boom 13 of the second horizontal beam 12 close to and away from the crane body 2 toward the container ship 4 so that they are set equally. For example, the movement distance of the relay stand 17 is set based on the distance that the trolley 10 is separated from the front legs 6 of the crane body 2.

Therefore, the relay stand 17 has the second horizontal beam 12 and its second boom depending on the position where the container c of the container ship 4 is loaded and unloaded.
13 will be moved.

 Next, the operation of the present invention will be described.

As shown in FIG. 1, when loading and unloading the container 3 from the crane body 2 to a position far away from the container ship 4, the cycle time of the cargo handling operation by the trolley 10 becomes the cycle time of the container cargo handling device 14. It will be larger than that.

Therefore, in this case, one end of the second horizontal beam 12 is extended from the crane body 2 onto the container ship 4 and the second boom is formed.
Form 13.

After that, the relay stand 17 moves to a position on the container ship 4 along the second boom 13 of the second horizontal beam 12. The relay stand 17 is set at a position largely separated from the crane body 2 to the container ship 4 side so that the cargo handling cycle time of the trolley 10 and the cargo handling cycle time of the container cargo handling device 14 are equal to each other.

In this way, by controlling the relay position of the relay stand 17, the cycle time of each of the trolley 10 and the container cargo handling device 14 becomes the shortest, and the cargo handling efficiency is improved.

Therefore, when the loading / unloading position of the container 3 on the container ship 4 is relatively close to the crane body 2, the crane body 2 is arranged so that the relay point has the shortest cycle time of the cargo handling work according to the proximity distance. Will be moved to the side.

As shown in FIG. 2, when the container ship 4 moves in and out, the second boom 13 of the second horizontal beam 12 as well as the boom 9 of the first horizontal beam 7 is provided in order to avoid collision with the container ship 4. It will be stored on the side of the crane body 2.

As described above, according to the present invention, the relay stand 17 traveling on the second horizontal beam 12 is used.
By extending the range of movement of the crane from the crane body 2 to the container ship 4 side and making the cycle time of the cargo handling work of the trolley 10 and the container cargo handling equipment 14 equal, these cycle times are the shortest and the cargo handling efficiency is greatly increased. Can be improved.

[Modified Embodiment] FIG. 3 shows another embodiment of the present invention.

Similar to the above-described embodiment, the crane body 2 is positioned below the first horizontal beam 7, and the crane body 2 moves from the container body 4 to the container ship 4.
A second horizontal beam 12 is provided so as to extend upward.

In particular, this second horizontal beam 12 has one end of the crane main body 2
Has a second boom 13 extended from above onto the container ship 4,
The second boom 13 is constructed so that it can be raised and lowered. Therefore, when the second boom 13 falls from the crane body 2 onto the container ship 4, the trolley 10 and the container handling device 14
The relay stand 17 is guided on the container ship 4 so that the cargo handling work with the above is the same.

Further, when the container ship 4 enters and leaves the port, the second boom 13 rises up and is stored like the boom 9 of the first horizontal beam 7.

[Effects of the Invention] In short, according to the present invention, the range of movement of the relay stand traveling on the second horizontal beam is expanded from the crane body to the container ship, and the cycle time of the cargo handling work of the trolley and the container cargo handling device is made equal. The cycle time of these is the shortest, and the cargo handling work efficiency of the container can be greatly improved.

[Brief description of drawings]

FIG. 1 is a front view showing a container crane according to the present invention,
FIG. 2 is a front view showing when a container ship enters and leaves the port, FIG. 3 is a front view showing a modification of the present invention, and FIG. 4 is a front view showing a conventional example of a container crane. In the figure, 2 is a crane body, 3 is a container, 4 is a container ship, 7 is a first horizontal beam, 10 is a trolley, 12 is a second horizontal beam, 14
Is a container handling device, 16 is a transport system, and 17 is a relay stand.

Claims (1)

[Claims] 1. A container crane for loading and unloading a container between a land-side transport system and a sea-side container ship,
The first horizontal beam extending from the crane body installed on the shore such as the quay to the container ship on the sea side and the container ship movably provided on the first horizontal beam A trolley for loading and unloading, a second horizontal beam located below the first horizontal beam in the crane body and provided so as to be extendable on the container ship, and movable along the second horizontal beam. A container loading / unloading device provided for loading and unloading the container with a land-side transport system, and a trolley and a container movably installed on the second horizontal beam between the trolley and the container loading / unloading device. A container crane, comprising: a transfer stand that moves to a position where the cycle time of the cargo handling work is equal to that of the cargo handling device, and relays and transfers the containers to each other.