JP2000143154A - Container crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of the cargo handling work of a container crane having a container relay board. SOLUTION: In a container crane 1 for loading and unloading a container 21 to a container ship 22, a movable sea side first traverser 17 and a movable sea side second traverser 26 are provided on a crane girder 8, a movable first trolley 9 and a movable second trolley 27 for receiving and transferring the container 21 between the container ship 22 and the traverses 17, 26 are provided on the crane girder 8 at a sea side, a movable land-side trolley 12 for receiving and transferring the container 21 between the traversers 17, 26 and a land equipment 19 is mounted on the crane girder 8 at a land side, and the rails respectively for moving the first traverser 17 and the second traverser 26 are separately laid on the crane girder 8. On this occasion, the first traverser 17 and the second traverser 26 can be passed by each other in a state that the containers 21 are loaded thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container crane, and more particularly to a container crane installed on a quay such as a container wharf for loading or unloading containers on a container ship.

[0002]

2. Description of the Related Art Conventionally, a container crane has been used as a cargo handling device installed on a quay such as a container wharf and loading or unloading containers with a berthing container ship.

[0003] In recent years, container ships have become larger and larger,
A super-Panamax hull-shaped container ship, which has a far greater width than the conventional Panamax hull form, has come to be used, but in order to cope with it, the boom must be lengthened.

In a conventional container crane, the container is lifted, lowered, and moved laterally by a trolley. Since the trolley has a swing of the container, it cannot be started or stopped suddenly. However, there is a limit to the improvement of cargo handling efficiency.

Accordingly, the applicant of the present application has provided two trolleys so as to be movable on a crane girder, the sea-side trolley lifts and lowers containers on a container ship, and the land-side trolley holds containers between the ground side. Lift and lower the trolley, move the container between the sea-side trolley and the land-side trolley, place the container on a traverser movably mounted on a crane girder, and move the container sideways. A container crane designed to perform high-speed
A patent application was filed (Japanese Patent Application No. 7-337211).

FIG. 4 is a front view of a container crane described in Japanese Patent Application No. 7-337211. In FIG. 4, reference numeral 1 denotes a container crane which travels on a traveling rail 3 laid along a quay 2. 4 is a rear leg of the container crane, and 5 is a front leg. Reference numeral 6 denotes a main girder provided horizontally above the rear leg 4 and the front leg 5 so as to be orthogonal to the running rail 3. Reference numeral 7 denotes a boom provided on the main girder 6 so as to project toward the sea, and is connected to be rotatable in the vertical direction. The main girder 6 and the boom 7 constitute a crane girder 8.

Reference numeral 9 denotes a seaside trolley movably provided on a rail laid on the boom 7. This sea side trolley 9
Is mainly located above the container ship 22 during the cargo handling operation, and reciprocates on the boom 7 to perform the operation. 10 is container 2
A spreader, which is a hanging tool, is suspended by a rope 11 on a seaside trolley 9 and is provided so as to be able to move up and down by a hoisting device (not shown).

Reference numeral 12 denotes a land-side trolley movably provided on a rail laid on the main girder 6. The land-side trolley 12 is stopped mainly above the ground equipment (elevated rail) 19 on the quay 2 during the cargo handling operation to perform the operation. Reference numeral 13 denotes a spreader provided on the land-side trolley 12, which is suspended by a rope 14 and is provided so as to be movable up and down by a hoisting device (not shown).

Reference numeral 17 denotes a U-shaped traverser, which is movably provided on rails laid on the boom 7 and the main girder 6 via wheels provided at the upper end of the U-shape. Also,
A container relay stand 17a on which the container 21 is placed is provided below the traverser 17.

Reference numeral 18 denotes a container guide provided on the rear leg 4 for guiding the container 21 onto an unmanned carriage 25 movably mounted on an elevated rail 19.

[0011]

However, in the container crane described in Japanese Patent Application No. 7-337211, the sea-side trolley is located mainly above the container ship and reciprocates on the boom to lift and lower the container. And the land side trolley stops mainly above the ground equipment on the quay and lifts and lowers the container, and the traverser moves on the crane girder to transfer the container between the sea side trolley and the land side trolley. Work is being carried out, but as container vessels become larger, the distance to the ground side becomes longer, and when the depth of the hold becomes deeper, containers are lifted and lowered with ground equipment of a certain height. There is an imbalance between the land-side trolley and the sea-side trolley that lifts and lowers the containers stored in the bottom of the hold. The difference between the work be too late, sometimes will occur is waiting to land side trolley, there is a case where cargo handling work and traverser of the work of the sea side trolley becomes a bottleneck in improving the performance of the container crane.

The present invention has been made to solve the above problems, and provides a container crane capable of increasing the efficiency of cargo handling work by increasing the number of trolleys and traversers. The purpose is to do so.

[0013]

According to the present invention, there is provided a trolley for moving on a crane girder, and a container is lifted and lowered by a spreader suspended from the trolley to load or unload a container ship. A first traverser and a second traverser movable on the crane girder, and delivering containers between the container ship and each traverser on the sea side on the crane girder. And a movable sea-side first trolley and a sea-side second trolley for performing
On the land side on the crane girder, there is a movable land-side trolley for transferring containers between each traverser and the ground equipment, and moving rails for the first traverser and the second traverser on the crane girder. Are provided separately, and a container crane is provided in which the first traverser and the second traverser can pass each other with a container mounted thereon.

According to the container crane constructed as described above, the first trolley on the sea side is mainly located on the sea side above the container ship, and the second trolley on the sea side is mainly located on the land side above the container ship. Then, the container is unloaded between the container ship and each traverser, and the landside trolley stops above the ground equipment on the quay, and unloads the container between each traverser and the ground equipment. The traverser can pass under the first traverser in a state where the container is placed on the container relay, and the first traverser and the second traverser are configured to place the container on the container relay and perform the first trolley. , The two trolleys on the sea side correspond to one trolley on the land side by alternately moving laterally between the second trolley and the land side trolley to transfer containers, and the number of traversers is reduced to two. Because Container ship large, and allows high efficiency of loading and unloading of the container even with a long crane girder.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the container crane of the present invention. FIG. 2 is a sectional view taken on line AA of FIG.
3 is a partially enlarged view of FIG. 2. In addition,
In these figures, parts common to those described in FIG. 4 will be described using the same reference numerals.

In FIGS. 1 to 3, reference numeral 1 denotes a container crane which runs on a running rail 3 laid along a quay 2. 4 is a rear leg of the container crane, and 5 is a front leg. Reference numeral 6 denotes a main girder provided horizontally above the rear leg 4 and the front leg 5 so as to be orthogonal to the running rail 3. Reference numeral 7 denotes a boom provided on the main girder 6 so as to project toward the sea, and is connected to be rotatable in the vertical direction. The main girder 6 and the boom 7 constitute a crane girder 8. Reference numeral 7a denotes a projecting member provided so as to project outward above the boom 7.

9 is a rail 7c laid inside the boom 7.
This is a sea-side first trolley movably provided via wheels 9a disposed on the upper end at the top. This sea side first trolley 9
During cargo handling work, it is located mainly on the sea side above the container ship 22,
Work is performed by reciprocating on the boom 7. Reference numeral 10 denotes a spreader, which is a suspending tool for the container 21, which is suspended from the first trolley 9 by the rope 11, and is provided so as to be able to move up and down by a hoisting device (not shown).

Reference numeral 12 denotes a land-side trolley movably provided on a rail laid inside the main girder 6. The land-side trolley 12 is stopped mainly above the ground equipment (elevated rail) 19 on the quay 2 during the cargo handling operation to perform the operation. Reference numeral 13 denotes a spreader provided on the land-side trolley 12, which is suspended by a rope 14 and is provided so as to be movable up and down by a hoisting device (not shown).

Reference numeral 17 denotes a first U-shaped traverser, and a U-shaped first traverser is mounted on a rail 7d laid outside the boom 7 and the main girder 6.
It is movably provided via wheels 17b disposed at the upper end of the character. A container relay stand 17a on which the container 21 is placed is provided below the first traverser 17.

Reference numeral 26 denotes a U-shaped second traverser, which is movable on rails 7b laid on the overhanging member 7a of the boom 7 and the main girder 6 via wheels 26b arranged at the upper end of the U-shape. The container relay stand 26a on which the container 21 is placed is provided below the container relay stand 26a. This second
Since the traverser 26 can pass below the first traverser 17 with the container 21 placed on the container relay stand 26a, the first traverser 17 and the second traverser 26 can pass each other.

27 is a rail 7 laid inside the boom 7
A second sea-side trolley provided movably via wheels disposed on the upper end on a rail c (the same rail as the first sea-side trolley traverse rail). The sea-side second trolley 27 is mainly located on the land side above the container ship 22 during the cargo handling operation.
Work by reciprocating above. Reference numeral 28 denotes a spreader, which is a suspending device for the container 21, which is suspended from the second trolley 27 on the sea side by a rope 29, and is provided so as to be able to move up and down by a hoisting device not shown.

Numerals 15 and 30 denote cabs and crane girder 8.
Is provided movably via a wheel on a rail (not shown) laid on either one of the left and right sides. The cabs 15 and 30 are provided with the first trolley 9 on the sea side and the second trolley 2 on the sea side.
7, the land-side trolley 12, the first traverser 17 or the second traverser 26 can be moved separately. During the container loading operation, the container moves to an arbitrary position and stops, and the worker monitors the loading operation status. .

A container guide 18 provided on the rear leg 4 guides the container 21 onto an unmanned carriage 25 movably mounted on an elevated rail 19. Reference numeral 20 denotes a connecting beam that connects substantially the center between the front leg 4 and the rear leg 5.

Next, the operation of the present embodiment will be described. Regarding the cargo handling work using the container crane 1,
The case of unloading will be described as an example. When the container ship 22 berths, the standing boom 7 is rotated and held horizontally. Next, the sea-side first trolley 9 and the sea-side second trolley 2
7 is moved above the container ship 22 along the crane girder 8. The sea-side first trolley 9 stops above the container 21 on the sea side of the container ship 22, and the sea-side second trolley stops above the container 21 on the land side of the container ship 22. 28 is lowered and the container 21 is gripped.

While the first sea-side trolley 9 is gripping the container 21, the second traverser 26 moves close to the first sea-side trolley 9 and stops, and the spreader 10 of the first sea-side trolley 9 is moved to the container. Hold 21 and wait for it to rise.
When the sea-side first trolley 9 winds up the spreader 10 and rises, the second traverser 26 moves to a position below the container 21 gripped by the spreader 10 of the sea-side first trolley 9 and stops. When the second traverser 26 stops, the sea-side first trolley 9 lowers the spreader 10 to move the container 21 to the second position.
The traverser 26 is lowered and placed on the container relay stand 26a. When the container 21 is placed on the second traverser 26, the sea-side first trolley 9 subsequently moves to a position above the container 21 to be loaded next, and performs the loading operation.

On the other hand, the sea-side second trolley 27 is
The first traverser 17 moves to a position near the sea-side second trolley 27 and stops while holding the sea-side second trolley 27.
Waits for the spreader 28 to grip the container 21 and rise. When the sea-side second trolley 27 winds up the spreader 28 and moves up, the first traverser 17 moves to a position below the container 21 gripped by the spreader 28 of the sea-side second trolley 27 and stops. When the first traverser 17 stops, the sea-side second trolley 27 lowers the spreader 28 to move the container 21 to the container intermediary station 1 of the first traverser 17.
7a. When the container 21 is placed on the first traverser 17, the sea-side second trolley 27 subsequently moves to a position above the next container 21 to be loaded and carries out a loading operation.

When the second traverser 26 receives the container 21 from the sea-side first trolley 9, the land-side trolley 12 stopped on the ground rail 19 along the crane girder 8 along the crane girder 8.
Move to below and stop. When the second traverser 26 stops, the land-side trolley 12 lowers the spreader 13 to grip the container 21, slightly winds up the spreader 13, and creates a gap between the lower surface of the container 21 and the container relay stand 17 a of the first traverser 17. Is provided. Container 21
Rises, the first traverser 17 moves again along the crane girder 8 to an optimal position on the sea-side first trolley 9 side, and subsequently performs the next cargo handling operation.

When the second traverser 26 moves, the land side trolley 12 places the container 21 on the unmanned carriage 25 on the elevated rail 19 while lowering the spreader 10 and guiding the container 21 to the container guide 18. 25 transports it to the desired container yard.

On the other hand, when the first traverser 17 receives the container 21 from the sea-side second trolley 27, it moves along the crane girder 8 to near the land-side trolley 12 on the ground side, and the land-side trolley 12 removes the container 21. The spreader 13 is placed on the unmanned carriage 25 on the elevated rail 19 and waits for the spreader 13 to rise. When the spreader 13 rises, the spreader 13 moves to a position below the land-side trolley 12 stopped on the elevated rail 19 and stops.
When the first traverser 17 stops, the land-side trolley 12 lowers the spreader 13 to grip the container 21, and slightly raises the spreader 13 to create a gap between the lower surface of the container 21 and the container relay stand 17 a of the first traverser 17. Is provided. When the container 21 rises, the first traverser 1
7 is the second seaside trolley 27 along the crane girder 8 again.
Move to the optimal position on the side and continue with the next cargo handling operation.

In this manner, the loading / unloading operation of the container 21 from the container ship 22 is performed mainly by the first trolley 9 on the sea side on the sea side above the container ship 22 and the second trolley 27 on the sea side during the cargo handling operation. The container 21 is located on the land side above the container ship 22, and the container 21 is loaded and unloaded between the container ship 22 and each of the traversers 17 and 26. The land side trolley 12 stops above the quay surface equipment 19 and stops. Each traverser 17,
The loading and unloading of the container 21 is performed between the first traverser 17 and the second traverser 26 while the container 21 is loaded and unloaded between the container yard 26 and the ground equipment 19. When loading to 22, it is performed by the operation opposite to this unloading.

In the operation of the above embodiment, an example has been described in which the first traverser 17 and the second traverser 26 are alternately moved laterally. For example, the container ship 22 is small, and the two traversers 17 and 26 are simultaneously operated. If it is not necessary to use the second traverser 26, connect the land side trolley 1
The first traverser 17 may be used by moving to a position on the land side that is not an obstacle to cargo handling work on the land side than the second traverser 26, and the sea-side second trolley 27 may be used similarly to the second traverser 26. On the land side than 12, the vehicle may be moved to a position where it does not hinder the cargo handling work and may be put on standby. When the trolleys 9, 27, 12 and the traversers 17, 26 transfer the container 21, the traversers 17, 26 move to the lower side of the trolleys 9, 27, 12 and move the container 21.
Of the delivery of the trolley 9,
The containers 21 and 27 may be appropriately moved above the traversers 17 and 26 to transfer the container 21.

The present invention is not limited to the above-described embodiment, but may, of course, be variously modified without departing from the gist of the present invention.

[0033]

As described above, according to the present invention,
Sea side first trolley is located mainly on the sea side above the container ship,
The sea-side second trolley is located mainly on the land side above the container ship, and performs loading and unloading of containers between the container ship and each traverser. The land-side trolley stops above the ground facilities on the quay and each traverser stops. The container is loaded and unloaded between the ground equipment and the first traverser and the second traverser. The container is placed on the container junction and the first trolley on the sea side, the second trolley on the sea side, and the trolley on the land side. To move the containers side by side alternately, and to make the two trolleys on the sea side correspond to one trolley on the land side and two traversers, so the container ship is large and Even in the case of having a long crane girder, an excellent effect is achieved such that the efficiency of container handling can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a container crane of the present invention.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a front view of a container crane described in Japanese Patent Application No. 7-337211.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container crane 2 Wharf 3 Rail 6 Main girder 7 Boom 7b, 7d Moving rail 8 Crane girder 9 First trolley 10, 13, 28 Spreader 11, 14, 29 Wire rope 12 Third trolley 17 First traverser 17a, 26a Container Attendant stand 18 Container guide 19 Elevated rail 21 Container 22 Container ship 26 Second traverser 27 Second trolley

Claims (1)

[Claims] 1. A container crane having a trolley that moves on a crane girder, wherein a container is lifted and lowered by a spreader suspended from the trolley to load or unload a container ship. A movable first traverser and a second traverser that are movable on a girder, and a movable first trolley on the ocean side on the crane girder that transfers containers between a container ship and each traverser; And a sea-side second trolley, and on the land side on the crane girder,
It has a movable land side trolley for transferring containers between each traverser and the ground equipment, and a first traverser and a second traverser are separately laid on a crane girder, A container crane wherein the first traverser and the second traverser can pass each other with a container placed thereon.