JPH09301674A - Container crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To almost uniformize working time between each trolley and a traverser by providing sea side and land side trolleys on a crane girder so as to be individually moved and providing the traverser while the trolleys are moved. SOLUTION: A traverse 16 is moved to an optimal position for making the moving distance of a first trolley 9 roughly equal to that of a second trolley 12 and stopped. The first trolley 9 is moved to the upper side of a container 21 loaded in a container ship 22 along a crane girder 8 and stopped and the container 21 is firmly held. Then, the fist trolley 9 is moved and stopped in the upper side of the traverser 16 and the container 21 is placed on a container receiving member. On the other hand, the second trolley 12 is moved to the upper side of the traverser 16 along a main girder 6 and stopped and the container 21 is firmly held. Then, the second trolley 12 is moved and stopped in the upper side of a container guide 18, the container 21 is placed on an automatic truck 25 on a high track line and carried to a desired container yard by the automatic truck 25.

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 loading and unloading device that is installed on a quay such as a container wharf to load or unload a container with a docked container ship. In recent years, this container crane uses a second trolley type container crane to shorten the cycle time (the time required for loading or unloading one container) and increase the number of containers to be loaded in order to improve the loading efficiency. There is.

FIG. 6 is a front view of a conventional second trolley type container crane. Reference numeral a is a second trolley type container crane, which travels on a traveling rail c laid along the quay b. d is the rear leg of the container crane, and e is the front leg. Reference numeral f denotes a main girder horizontally provided on the upper portions of the rear leg d and the front leg e so as to be orthogonal to the traveling rail c. A boom g is provided so as to project to the sea side of the main girder f, and is connected so as to be vertically rotatable. The main girder f and the boom g constitute a crane girder t. When the container ship s berths, the boom g stands upright so as not to hinder the berth, and when carrying out cargo handling work, the boom g is horizontally held so as to overhang the container ship s. i is a main trolley provided so as to be movable on the main girder f and the boom g. j is a spreader which is a hanging tool for the container, and is hung from the main trolley i by a rope r so that it can be moved up and down by a hoisting device (not shown). Reference numeral k denotes a driver's cab, which is provided integrally with the main trolley i and moves with the movement of the main trolley i. Reference numeral h is an auxiliary girder provided approximately in the middle of the rear leg d and the front leg e in parallel with the main girder f. m is an auxiliary trolley provided so as to be movable on the auxiliary girder h. Reference numeral n is a spreader that is suspended from the auxiliary trolley m by a rope r1 and can be raised and lowered by a hoisting device (not shown). o is the lower front leg e of the auxiliary girder h
It is a container relay stand installed horizontally in the. p is the quay b
And u is an unmanned carriage movably mounted on the elevated rail p. s is a container ship.

Next, the cargo handling work using the container crane a will be described by taking the case of unloading as an example. With the boom g held horizontally, the main trolley i is moved above the container ship s along the crane girder t and stopped, and the spreader j is lowered to grip the container q. Next, the spreader j is wound up, the main trolley i is moved, and stopped above the container relay stand o.
And the container q is placed on the container relay stand o. After placing the container q on the container relay stand o, the main trolley i continues to move above the container ship s to carry the next container q.

On the other hand, the auxiliary trolley m moves along the auxiliary girder h above the container relay stand o and stops, and then the spreader n is lowered to grip the container q. Next, the spreader n is rolled up, the auxiliary trolley m is moved, and the auxiliary trolley m is mounted on the unmanned carriage u on the elevated railroad p and conveyed to a desired container yard.

In this way, the loading and unloading operations from the container ship s are repeatedly performed. On the contrary, when loading from the container yard to the container ship s, the loading and unloading operation is performed in the opposite manner.

[0007]

However, in recent years,
The size of container ships has become larger and larger, and a container ship of the shape called Super Panamax, which has a much larger ship width than the conventional Panamax ship form, has come to be used. Must be long. Therefore, the longer the boom, the longer the travel distance of the trolley, but since the container relay stand is fixed, the distance between the container ship and the container relay stand and the distance between the container relay stand and the unmanned trolley or trailer, etc. Even if the moving distance with the above-ground equipment becomes uneven and the cargo handling time between the container relay stand and the above-ground equipment is shortened, the cargo handling time between the container ship and the container relay stand cannot catch up. However, there was a problem that work efficiency could not be improved sufficiently.

The present invention was devised to solve the above-mentioned problems, and the moving distance of the first trolley between the container ship and the container relay stand (traverser) and the container relay stand (traverser). ) And the moving distance of the second trolley between the ground side and the ground side, and to provide a container crane in which the traverser does not interfere with the cargo handling when the traverser overhangs on the container ship and moves. It is a thing.

[0009]

According to the present invention, a trolley that moves on a crane girder is provided, and a container is hoisted and unloaded by a spreader that is hung on the trolley to be loaded or unloaded on a container ship. In the container crane for carrying out the above, a traverser is provided movably on the crane girder, and a movable traverser on the sea side of the traverser on the crane girder is used to transfer the container between the container ship and the traverser. One trolley is provided, and a movable second trolley for transferring a container between the traverser and the above-ground equipment is provided on the land side of the traverser on the crane girder, and the traverser has a container receiving member at the lower end. It consists of a pair of parallel link devices facing each other, and the space between the container receiving members is adjusted according to the length of the container. Container crane being characterized in that to allow scaling Te is provided.

According to the container crane constructed as described above, the traverser is movably provided, and the optimum position of the traverser is determined by considering the position of the container on the container ship and the position of the ground equipment. Since the traveling distance of the first trolley to and from the traverser and the traveling distance of the second trolley between the traverser and the above-ground equipment on the quay are made equal, the cycle time of cargo handling is minimized and the cargo handling of containers is minimized. The efficiency can be further increased. Further, since the traverser is provided with a pair of parallel link devices facing each other with a container receiving member at the tip, the interval between the container receiving members can be expanded / contracted according to the length of the container, and a short container can be handled. When doing so, the bridge etc. are kept out of the way even if the traverser moves up to the container ship.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 to 5
1 shows an embodiment of the present invention. FIG. 1 is a front view of a container crane, FIG. 2 is a front view of a traverser, FIG. 3 is a view taken along the line AA of FIG. 1, and FIG. 4 is a partially enlarged view of FIG. Figures and 5 are side views of the container ship.

In the figure, reference numeral 1 is a container crane, which travels on a traveling rail 3 laid along the quay 2. Four
Is the rear leg of the container crane, and 5 is the front leg. 6
Is a main girder horizontally provided on the rear leg 4 and the front leg 5 so as to be orthogonal to the traveling rail 3. A boom 7 is provided on the main girder 6 so as to project to the sea side, and is connected to the main girder 6 so as to be vertically rotatable. The main girder 6 and the boom 7 constitute a crane girder 8. The first trolley 9 and the second trolley 12 are placed on the crane girder 8.
Moves. In addition, the first trolley 9 and the second trolley 12
A traverser 16 is movably provided between the and. A spreader 10 is suspended by a rope 11 on the first trolley 9, and the container 21 is transferred between the container ship 22 and the traverser 16 on the sea side of the traverser 16. Further, the spreader 13 is attached to the second trolley 12.
Is suspended by rope 14 and traverser 16
The container 21 is transferred between the traverser 16 and the ground facility on the land side. In addition, 15 is the first trolley 9
In the operator's cab provided in, it moves with the movement of the first trolley 9.

As shown in FIG. 3, the first trolley 9 is movably provided inside the main girder 6a on a rail 9b laid on a guide frame 6c provided along the main girder 6a. During the cargo handling work, the work is mainly performed by reciprocating on the boom 7. Reference numeral 9a is a suspending member arranged so as to project from the upper end of the first trolley 9, and 9c is this suspending member 9a.
It is a vertical roller for trolley traveling supported by a pin 9d. 10 is a spreader for suspending the container 21,
Rope sheave 24 and spreader 1 on the first trolley 9
It is suspended by the rope 11 wound around the rope sheave 24a on the sheave block 0 of 0, and is provided so as to be able to move up and down by a hoisting device (not shown). Further, the spreader 10 is capable of expanding and contracting according to the length of the container 21 (for example, 20 feet or 40 feet). A solid line 21a in FIG. 3 is a 40-foot container, and a virtual line 21b is a 20-foot container. Reference numeral 9e is a guide of the sheave block 23 provided at the four corners of the first trolley 9 so as to project downward, and 23b is a guide provided at the four corners of the sheave block 23 so as to project upward. So spreader 1
When 0 is wound up by the rope 11 and rises, it is engaged and guided by the guide 9e and the spreader 1
It is designed to prevent 0 roll.

Reference numeral 12 denotes a second trolley (FIG. 1), which has substantially the same structure as the first trolley 9 and is provided inside the main girder 6a and along the main girder 6a, like the first trolley 9. It is movably provided on a rail 9b laid on the guide frame 6c, and mainly reciprocates on the boom 7 to perform work during cargo handling work. A spreader 13 is suspended from the second trolley 12, and the container 21 is transferred between the traverser 16 and the above-ground equipment on the land side of the traverser 16. Incidentally, 14 is a rope for suspending the spreader 13.

As shown in FIGS. 2 and 3, the traverser 16 moves on a rail 16d laid on a guide frame 6c provided along the main girder 6a outside the main girder 6a of the crane girder 8. It is possible. 16a
Is a main frame of the traverser 16, which is arranged along the crane girder 8 at regular intervals. The main frames 16a are connected by a horizontal frame 16b and connecting members 16j arranged above and below the horizontal frame 16b. There is. Reference numeral 16e denotes a traverser running vertical roller (FIG. 3) supported by a pin 16f on the horizontal frame 16b. 16g is main frame 6a
Is supported by a pin 16f at the upper end of the main girder 6a, and the main girder 6a is provided at the outer ends of a plurality of overhanging members 6b provided at the upper surface of the main girder 6a so as to project outward at regular intervals. It is an upper horizontal roller that rotates along a guide frame 6c that is provided along it. Reference numeral 16i is a locking member for the traverser towing rope 29 fixed to the main frame 16a.
The traverser tow rope 29 is wound up by a winding device (not shown) to drive the traverser 16. Reference numeral 30 is a guide of a traverser towing rope 29 provided outside the main girder 6a with a constant space.

Reference numeral 17 is a pair of parallel link devices attached to the traverser 16. This parallel link device 17
Is an upper link 17a pivotally supported by a pin 17e on the upper end of the main frame 16a of the traverser 16 and an upper link 17a pivotally supported by a pin 17e on a bracket 17h provided on a connecting member 16j at the lower end of the main frame 16a of the traverser 16. The supported lower link 17b and these upper links 1
7a and the lower end of the lower link 17b, the shaft 17d and the pin 1
The connecting link 17c pivotally supported by 7e and the main frame 16a form a parallelogram, and the cylinder base is pin 17 attached to the bracket 17h provided on the connecting member 16j.
It is pivotally supported by e and the tip of the piston rod 17g is the shaft 1
The piston rod 17g of the hydraulic cylinder 17f pivotally supported on 7d can be expanded and contracted. As shown in FIG. 4, a container receiving member 27 is provided at the lower end of the connecting link 17c so as to be horizontally rotatable by a driving device (not shown). Further, 26 is a container lateral pressing member, which is provided at the lower end of the connecting link 17c in the same manner as the container receiving member 27 so as to be laterally rotatable by a driving device (not shown). Reference numeral 28 is a hinge attached to the connecting link 17c and the container lateral pressing member 26. In addition, on the upper surface of the container receiving member 27, protrusions 27 a protruding upward are provided to be fitted into the recesses provided at the four corners of the lower surface of the container 21. Incidentally, 31 is a container guide provided at the lower end of the connecting link 17c.

The parallel link devices 17 of the traverser 16 are a pair facing each other with the main girder 6a of the crane girder 8 interposed therebetween, and a container receiving member provided at the lower end of each of the pair of parallel link devices 17. By 27,
The four corners of the container 21 are supported, and the width intervals can be expanded / contracted according to the length of the container 21 by expanding and contracting the hydraulic cylinder 17f.

As shown in FIG. 1, reference numeral 18 denotes a container guide provided on the rear leg 4 so as to be located below the main girder 6. 19 is this container guide 18
The unmanned carriage 25 is movably mounted on the upper surface of the elevated rail of the ground side equipment provided on the quay 2 in the lower part of the. Reference numeral 20 denotes a connecting beam that connects the front leg 4 and the rear leg 5 substantially in the middle.

FIG. 5 is a side view of the container ship 22, 22a.
Is a bridge of the container ship 22. L1 and L2 indicate the length of the container 21. Container crane 1
As shown in FIG. 1, the spreader 10 of the first trolley 9 expands and contracts according to the length of the container 21 so as to be orthogonal to the container ship 22. Are lifted and transferred to the traverser 16. At this time, when the container ship 22 is large, the traverser 16 needs to extend above the container ship 22. When the short containers 21 are stacked next to the bridge 22a as shown in the figure, if the width interval of the traverser 16 is narrowed, the traverser 16 does not hit the bridge 22a.

Next, the operation of this embodiment will be described. Regarding the cargo handling work using the container crane 1,
An example of unloading will be described. When the container ship 22 comes alongside the shore, the standing boom 7 is rotated and held horizontally. Next, the traverser 16 is moved to an optimum position where the moving distance of the first trolley 9 becomes substantially equal to the moving distance of the second trolley 12 and stopped, and the parallel link device 17 is used according to the length of the container 21. Adjust the width interval. In that state, the first trolley 9 is moved along the crane girder 8 and stopped above the container 21 of the container ship 22, and the length of the spreader 10 is adjusted according to the length of the container 21. 10 down and container 21
To grip. Next, the spreader 10 is rolled up, the first trolley 9 is moved and stopped above the traverser 16, the spreader 10 is lowered, and the container 21 is placed on the container receiving member 27. When the container 21 is placed on the container receiving member 27, if the container lateral pressing member 26 on the second trolley 12 side is closed and the container lateral pressing member 26 on the opposite side is opened, the first trolley 9 It can be used as a stopper when the container 21 is placed from the side.
In addition, after the first trolley 9 moves and stops above the traverser 16, the container lateral pressing member 26 on the first trolley 9 side is
When the container 21 is closed, it can be used as a guide when the container 21 is lowered by these container lateral pressing members 26. After that, when the container 21 is placed on the container receiving member 27, the first trolley 9 continues to move above the container 21 to be loaded next to the container ship 22 to transport the next container 21.

On the other hand, the second trolley 12 moves above the traverser 16 along the main girder 6 and stops, so that the container 2
The length of the spreader 13 is adjusted according to the length of 1, and the spreader 13 is lowered to hold the container 21. next,
The spreader 13 is rolled up, the second trolley 12 is moved and stopped above the container guide 18, and the container 21 is placed on the unmanned carriage 25 on the elevated rail 19 while the spreader 13 is lowered and guided by the container guide 18. An unmanned cart 25 transports the container to a desired container yard.

The loading / unloading operation from the container ship 22 is repeatedly performed as described above. On the other hand, when the container ship is loaded from the container yard to the container ship 22, the operation is the opposite of the unloading operation.

In the operation of the above embodiment, the traverser 16 is stopped at a position where the moving distance of the first trolley 9 becomes substantially equal to the moving distance of the second trolley 12, and the first trolley 9 and the second trolley 12 are moved. Although the example in which the cargo handling work is performed by moving the traverser 16 has not been stopped at a fixed position, the traverser 16 is moved to the first trolley 9 and the second trolley 1.
The first trolley 9 is stopped at the upper position of the container 21 which is to be loaded next to the container ship 22 only above the container ship 22, and only the hoisting and unwinding of the spreader 10 is performed. The container 21 is loaded and unloaded, and the second trolley 12 is stopped above the container guide 18 to wind and lower the spreader 13 only.
You may carry out loading and unloading with 5. In this case, the spreader 13 may wind up the container 21 at the same position as the traverser 16 depending on the stop position of the traverser 16. In such a case, the container receiving member provided at the lower end of the horizontal link device 17 may be used. Open 27 to the outside so that it does not hinder the raising of the container 21.

Further, apart from the operation of the above two embodiments, the traverser 16, the first trolley 9 and the second trolley 1 are provided.
2 may be moved separately for loading and unloading the container 21 so that the total cargo handling time of the vertical movement time and the horizontal movement time of the container 21 is minimized according to the shipboard position of the container 21. Good.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0026]

As described above, according to the present invention,
On the crane girder of the container crane, a traverser having a parallel link device provided with a container receiving member at the lower end is movably provided, and the first trolley and the second trolley are also separately movable on the same crane girder. Since the cargo handling work of the container is performed, the working time of the first trolley, the second trolley, and the traverser can be made substantially equal. Also, since the width intervals of the traversers are variable, the traversers can be extended to the top of the container ship and kept in the optimum position. Therefore, there is an excellent effect that the working time of the container cargo handling can be shortened and the working efficiency can be improved.

[Brief description of drawings]

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

FIG. 2 is a front view of a traverser.

FIG. 3 is a view on arrow AA of FIG.

4 is a partially enlarged perspective view of FIG.

FIG. 5 is a side view of the container ship.

FIG. 6 is a front view of a conventional container crane.

[Explanation of symbols]

 1 Container Crane 2 Quay 3 Rail 4 Rear Leg 5 Front Leg 6 Main Girder 6a Main Girder 6b Overhanging Member 6c Guide Frame 6d Horizontal Connecting Member 7 Boom 8 Crane Girder 9 1st Trolley 9a Hanging Member 9b Rail 9c Trolley Vertical Roller 9d Pin 9e Sheave block guide 10,13 Spreader 11,14 Rope 12 Second trolley 15 Operator's cab 16 Traverser 16a Traverser main frame 16b Traverser vertical frame 16c Guide frame 16d Rail 16e Traverser vertical roller 16f Pin 16g Upper horizontal roller 16h Lower horizontal Roller 16i Rope locking member 16j Connecting member 17 Parallel link device 17a Upper link 17b Lower link 17c Connecting link 17d Shaft 17e Pin 17f Cylinder 17g Cylinder rod 1 7h Bracket 18 Container guide 19 Elevated rail 20 Coupling beam 21,21a, 21b Container 22 Container ship 22a Bridge 23 Sheave block 23b Protrusion 24, 24a Sheave 25 Unmanned trolley 26 Container side pressing member 27 Container receiving member 27a Protrusion 28 Hinge 29 Traverser traction Rope 30 rope guide 31 container guide a container crane b quay c rail d rear leg e front leg f main girder g boom h auxiliary girder i main trolley j spreader k operator's cab m auxiliary trolley n spreader o container relay stand p elevated rail q container r Robe s Container ship t Crane girder u Unmanned bogie

Claims (1)

[Claims] 1. A container crane having a trolley that moves on a crane girder, and a container is lifted and hung by a spreader suspended on the trolley to be loaded or unloaded on a container ship. A traverser is movably mounted on the girder, and
A movable first trolley for transferring containers between the container ship and the traverser is provided on the sea side of the crane girder on the sea side, and on the land side of the traverser on the crane girder, the traverser and the ground equipment are provided. A movable second trolley for delivering and receiving the container is provided between the traversers, and the traverser is composed of a pair of parallel link devices facing each other with a container receiving member at a lower end thereof. A container crane that can be expanded or reduced according to the requirements.