JPH09315758A - Container crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To equalize the moving distance of a first trolley between a container ship and a traverser with the moving distance of a second trolley between the traverser and a ground side by providing the traverser in a movable manner on a crane girder having a moving trolley. SOLUTION: When a container ship 22 arrives at a terminal, a boom 7 is turned and kept horizontal. Then, a traverser 16 is moved to the optimum position where the moving distance of a first trolley is approximately equal to the moving distance of a second trolley, and stopped. The first trolley 9 is moved above a container 21 and stopped, a spreader 10 is lowered to hold the container 21. The spreader 10 is lifted up, and stopped above the traverser 16, and the container 21 is loaded on a container receiving member. The second trolley 12 is moved along a main girder 6 above the traverser 16, and the container 21 is held by the spreader 13. Then, the second trolley 12 is moved and the container 21 is loaded in an unmanned truck 25 on an elevated track 32.

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. 9 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 that performs the above, a traverser is movably provided on the crane girder, and a movable first container that transfers the container between the container ship and the traverser on the sea side of the traverser on the crane girder. One trolley is provided, and a movable second trolley for delivering and receiving 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. Along with two vertical arms, it is formed in a groove shape that opens upwards, and hangs down from the upper end of the vertical arm. Supporting frame having various rotating shafts, the rotating shaft of the container supporting frame is supported at the distal end, and a pair of eccentric arms having a rotating shaft perpendicular to the base end and the rotating shaft of the eccentric arm are supported at the distal end. At the same time, the eccentric arm support frame provided at a distance in the front-rear direction and the guide frame provided outside the left and right main girders of the crane girder are movably opposed to each other, and the base end of the eccentric arm support frame is fixed to the pair. The present invention provides a container crane characterized by comprising a saddle and a rotating device for rotating a rotating shaft of an eccentric arm, and making a space between the container receiving members expandable / reducible according to the length of the container.

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. In addition, the traverser allows the space between the container receiving members to be expanded / contracted according to the length of the container, so that when the short container is loaded and unloaded, the bridge or the like does not become an obstacle even if the traverser moves up to the container ship. It is like this.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 to 8
Shows an embodiment of the present invention.

FIG. 1 is a front view of a container crane.
In the figure, 1 is a container crane, which travels on a traveling rail 3 laid along the quay 2. 4 is the rear leg of the container crane, and 5 is the front leg. 6 is this rear leg 4
And a main girder horizontally provided on 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. Main girder 6 and boom 7
And constitute the crane girder 8. The first trolley 9 and the second trolley 12 move on the crane girder 8.
Further, a traverser 16 is movably provided between the first trolley 9 and the second trolley 12. 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. In addition, a spreader 13 is suspended by a rope 14 on the second trolley 12, and the spreader 13 is on the land side of the traverser 16,
The container 21 is transferred between the traverser 16 and the ground equipment. In addition, 15 is a driver's cab provided in the 1st trolley 9, and moves with the movement of the 1st trolley 9.

FIG. 4 is a view taken along the line AA of FIG. 1, showing a state where the spreader is holding a container of 40 feet, and FIG. 5 is a view taken along the line AA of FIG. In the figure, the spreader is holding a 20-foot container. As shown in FIGS. 4 and 5, the first trolley 9 is provided inside the main girder 6a so as to be movable on a guide frame 6e provided along the main girder 6a, and the main trolley 9 is mainly used during the cargo handling work. Work is performed by reciprocating on the boom 7.
Reference numeral 9a denotes a suspending member arranged at the upper end of the first trolley 9 so as to project upward, and 9b denotes a shaft 9 attached to the suspending member 9a.
It is a vertical wheel for trolley traveling supported by c. 10
Is a spreader which is a suspender for the container 21, and is suspended by the rope 11 wound around the rope sheave 24 on the first trolley 9 and the rope sheave 24a on the sheave block 23 of the spreader 10, and can be lifted and lowered by a hoisting device (not shown). It is provided in. Also, this spreader 1
0 is expandable according to the length of the container 21 (for example, 20 feet or 40 feet).

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 the guide frame 6e and mainly reciprocates on the main girder 6 to perform the work during the cargo handling work. A spreader 13 is suspended on 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.

FIG. 2 is a front view of the traverser 16, and FIG. 3 is a plan view of the traverser 16. The traverser 16 is shown in FIG.
5 to FIG. 5, the container receiving member 27 is provided at the lower end.
And a container support frame 18 having two vertical arms 18a, formed in a groove shape opened upward, and having a vertical rotation axis 18b at the upper end of the vertical arm 18a.
While supporting the rotary shaft 18b of the container support frame 18 at the tip, the pair of eccentric arms 17 having a rotary shaft 17a perpendicular to the base end, and the rotary shaft 17a of the eccentric arm 17 at the tip, The eccentric arm support frame 16a provided at intervals in the front-rear direction and the guide frame 6f provided outside the left and right main girders 6a of the crane girder 8 face each other so as to be movable, and the base end of the eccentric arm support frame 16a is fixed. It is composed of a pair of saddles 16b and a rotating device 19 for rotating the rotating shaft 17a of the eccentric arm 17. 16c is saddle 1
A vertical wheel for traverser traveling supported by a shaft 16d on 6b is provided movably outside a main girder 6a on a guide frame 6f provided along the main girder 6a.
16e is a shaft 16 at the upper end of the eccentric arm support frame 16a.
An upper horizontal wheel supported by f, and the main girders 6a are provided at the outer ends of a plurality of overhanging members 6b provided so as to project outward at regular intervals in the longitudinal direction of the upper surface of the main girders 6a. It rotates along a guide frame 6c provided along the. Reference numeral 16g denotes a lower horizontal wheel supported by a shaft 16h on a wheel support member 16j arranged at the lower end of the eccentric arm support frame 16a, and rotates along the guide frame 6f. Reference numeral 16i is a locking member for the traverse rope 29 fixed to the inside of the eccentric arm support frame 16a. The traverse rope 29 is wound up by a winding device (not shown) to drive the traverser 16.

On the vertical rotation shaft 17a of the eccentric arm 17,
A cylindrical member 17b is vertically fitted on the lower frame of the eccentric arm support frame 16a. Reference numeral 17c denotes a connecting member fixed to the lower end of the vertical rotating shaft 17a, and the bearing 18d provided at the tip thereof supports the vertical arm 18 via the vertical rotating shaft 18b. Reference numeral 18c is a cylindrical member fitted onto the vertical rotation shaft 18b.

At the four corners of the lower end of the container support frame 18a, the container guide 1 is formed so as to form a right angle inward.
8e is provided. Further, as shown in FIGS. 6 and 7, container receiving members 27 are provided at the four corners thereof. This container receiving member 27 penetrates through a hole 27a provided in the container receiving member 27 and is provided at the upper end with the tightening corner metal fitting 2
An eccentric shaft 28a to which 8 is fixed is inserted. A hydraulic cylinder 28b that rotates the tightening corner fitting 28 is connected to the lower end of the eccentric shaft 28a. Reference numeral 30 denotes container bottom corner metal fittings provided at four corners of the lower surface of the container 21.
When it is lowered onto 7, the tightening corner metal fitting 28 provided on the container receiving member 27 is fitted, and the direction of the tightening corner metal fitting 28 is set to 90 by the hydraulic cylinder 28b in the direction orthogonal to the slot 30a.
By rotating the container 21, the container 21 is fixed so that the container 21 does not come off from the container receiving member 27.

As shown in FIGS. 3 to 5, the rotating device 19 is provided on one upper surface of the eccentric arm support frame 16a. Then, the gear 19a of the rotating device 19 is meshed with the gear 19b provided on the upper end of the vertical rotation shaft 17a, and the vertical rotation shaft 17a is rotated to rotate the eccentric arm 17 by 180 ° according to the length of the container 21. In this way, for example, when the length of the container 21 is 40 feet, the container 21 rotates outward, and when the length of the container 21 is 20 feet, the container 21 rotates inward. Match the length of 21. The bearing 17d supports the vertical rotation shaft 17a by a bearing (not shown).

As shown in FIG. 1, reference numeral 31 denotes a container guide provided on the rear leg 4 so as to be positioned below the main girder 6. 32 is this container guide 31
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. 8 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 the present 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 movement distance of the first trolley 9 becomes substantially equal to the movement distance of the second trolley 12 and stopped, and the width of the traverser 16 is adjusted by the eccentric arm 17 depending on the length of the container 21. Adjust the spacing. 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. Lower 10 and grip the container 21. 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 moved to the container receiving member 27.
And the container 21 is fixed by rotating the tightening corner metal fitting 28 on the container receiving member 27 by 90 °. The container guide 18e serves as a guide when the container 21 is unloaded. After that, when the container 21 is placed on the container receiving member 27, the first trolley 9
Subsequently, in order to convey the next container 21, the container 21 moves above the container 21 to be loaded next.

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 tightening corner fitting 28 on the container receiving member 27 is rotated by 90 ° to open the container 21. Subsequently, the spreader 13 is wound up, the second trolley 12 is moved and stopped above the container guide 31, and the spreader 13 is lowered and guided by the container guide 31, and the container 21 is mounted on the unmanned cart 25 on the elevated rail 32. Then, the unmanned cart 25 transports the container to a desired container yard.

In this way, the loading and unloading operations from the container ship 22 are repeatedly carried out. On the contrary, when loading from the container yard to the container ship 22, the loading and unloading operation is carried out by the opposite 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 31 to wind and lower the spreader 13 only.
You may carry out loading and unloading with 5.

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-described embodiment, but may, of course, be variously modified without departing from the gist of the present invention.

[0027]

As described above, according to the present invention,
On the crane girder of the container crane, a traverser having a container support frame provided with a container receiving member at its lower end is movably provided, and a first trolley and a second trolley are also movably provided on the same crane girder. Since the cargo handling work of the container is performed, the working time of the first trolley and the traverser and the working time of 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,
It has excellent effects such as shortening the work time of container handling and improving work efficiency.

[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 plan view of the traverser.

FIG. 4 is an AA arrow view of FIG. 1 showing the spreader gripping a 40 foot container.

5 is an AA arrow view of FIG. 1 showing the spreader gripping a 20 foot container.

6 is a partially enlarged perspective view of FIG.

FIG. 7 is a view taken in the direction of arrows BB in FIG. 6;

FIG. 8 is a side view of the container ship.

FIG. 9 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, 6e, 6f Guide Frame 6d Side Connecting Member 7 Boom 8 Crane Girder 9 1st Trolley 9a Suspension Member 9b Vertical Wheel 9c Axle 10, 13 Spreader 11, 14 Rope 12 Second trolley 15 Operator's cab 16 Traverser 16a Eccentric arm support frame 16b Saddle 16c Vertical wheels 16d, 16f, 16h Shaft 16e Upper horizontal wheel 16g Lower horizontal wheel 16i Rope locking member 16j Wheel support member 17 eccentric arm 17a, 18b vertical rotating shaft 17b, 18c cylindrical member 17c connecting member 17d, 18d bearing 18 container support frame 18a vertical arm 18e container guide 18e 19 eccentric arm rotating device 19a, 19b gear 20 Connecting beam 21,21a, 21b Container 22 Container ship 22a Bridge 23 Sheave block 24,24a Sheave 25 Unmanned bogie 27 Container receiving member 28 Tightening corner fitting 28a Eccentric shaft 28b Hydraulic cylinder 29 Traverse rope 30 Container bottom corner fitting 30a Long hole 31 Container guide 32 Elevated rail a Container crane b Wharf 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 p p Elevated rail q Container r rope s Container ship t Crane girder u Unmanned cart

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 traverser on the crane girder, and a traverser and ground equipment are provided on the land side of the traverser on the crane girder. A movable second trolley for delivering and receiving a container is provided between the traversers, and the traverser has a container receiving member at a lower end thereof and has two vertical arms and is formed in a groove shape opened upward, A container support frame having a rotation axis perpendicular to the upper end of the arm, a pair of eccentric arms having a rotation axis perpendicular to the base end while supporting the rotation axis of the container support frame at the tip, and a rotation axis of the eccentric arm. The eccentric arm support frame, which is supported at the tip and has a space in the front-rear direction, and the outer frame of the left and right main girders of the crane girder The pair of saddles movably face each other on the guide frame and the base end of the eccentric arm support frame is fixed, and a rotating device that rotates the rotation shaft of the eccentric arm. A container crane characterized by being able to expand and contract according to its length.