JPH09301681A - Container crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continuously travel a truck from a sea side to a land side by providing a girder, a vertically moved, pulled-out and pulled-in shuttle girder in the lower side of a boom and traveling the truck thereon. SOLUTION: For unloading a container 4 from a container ship, a sea side trolley 5a is traveled to a position for hoisting the container 4. In this position, a spreader 5c is lowered and attached to the target container 4. Then, the container 4 is hoisted and held in its hoisted state. A truck 7 is traveled to a position directly below the container 4 and stopped. The container 4 is lowered from the sea side trolley 5a and the container 4 is transferred to the truck. The truck 7 is traveled to a land side and stopped directly below a land side trolley 5b. The land side trolley 5b lowers the container 4 from the truck 7 and holds this state. The land side trolley 5b is then hoisted and the container 4 is transferred to a chassis 14 under standby on the ground. The chassis 14 carries the container 4 to a container yard.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container crane for loading and unloading a container from a container ship, and more particularly to a container crane capable of loading and unloading a container at high efficiency.

[0002]

2. Description of the Related Art A conventional container crane is provided with a trolley capable of traveling on a crane girder, and the trolley hoists a container from a container ship, travels to the land side, and unloads the container onto a chassis or rail car on the land side. By doing so, cargo handling is performed. Therefore, the transportation is basically intermittent, and the shaking of the container becomes severe, so that the traverse speed of the trolley cannot be increased so much and the number of cargoes handled per hour is limited.

Therefore, it has been proposed that the process of rolling up a container from a container ship, the lateral movement of the rolled up container, and the process of unwinding the laterally moved container on the ground transportation means are made continuous, and the process is automated to be effective. . For example, Japanese Patent Application No. 5-97251 entitled "Container Handling Equipment" discloses such a continuous container crane. 7 to 9 are drawings disclosed in the above application, FIG. 7 is a side view of a container crane, FIG. 8 is an explanatory view showing a circulating traveling state of a container carrier truck (hereinafter referred to as a truck), and FIG. 9 is a container crane. It is the front view which looked at from the sea side.

7 to 9, a is a container ship and b is a container crane. Container crane b
Is installed on the quay f to unload and load the container c on the container ship a. At the upper part of the container crane b, a girder e and an undulating boom d connected to the sea side of the girder e are provided, and a trolley g capable of traveling on the girder e and the boom d is provided. The trolley g only travels for alignment in an unloaded state, and during the loading and unloading work, the hoisting device h hoists the container c from the container a.
Only unwind. i is a railroad girder for a bogie that can be raised and lowered by an elevating device j. The girder i is provided with rails for a bogie k in two upper and lower stages, and a bogie lift m is provided at its sea-side end. A similar truck lift m is also provided on the sea side leg n of the container crane b. Therefore trolley k
Can be circulated through a lift m provided at both ends on a rail girder i for a truck.

Reference numeral p designates a fixed carriage rail girder provided between the sea-side leg n and the land-side leg q of the container crane b, similarly to the lifting carriage rail girder i described above. k can be cycled. A container transfer machine r is provided above the land side end of the truck rail girder p, and the container c is transferred from the carriage k to the yard side carriage s that travels on the yard side transportation platform t. Be transferred. In the container crane b, u is an upper frame.

Next, the circulation traveling of the truck k in the container crane b will be described. FIG. 8 is an explanatory diagram for explaining how the carriage k circulates between the lifting and lowering carriage rail girders i and the fixed carriage rail girders p. A bogie lift m is provided at the sea-side end of the bogie rail girder i, between the bogie rail girders i and p, and at the land side end of the bogie rail girder p, respectively. It is possible to circulate in the bogie rail girders i, p and between the bogie rail girder i and the bogie rail girder p.

[0007]

The container crane described above has the following problems. (1) Since the girders i and p for the bogie rails are separated on the sea side and the land side, the sea side is a lifting type and the land side is a fixed type, so the container c is loaded at the joint part of the girders on the bogie rails. The trolley k must be moved up and down, which takes extra time. (2) The elevating carriage rail girder i is suspended from the boom d, and the girder i is also erected when the boom is erected. Therefore, the motor for standing up must be made large, and since the lower surface of this girder i interferes with the container ship a when standing up, the crane as a whole must be raised.

The present invention has been devised in view of the above-mentioned problems, and a container carrier is capable of continuously traveling on a rail girder for a carrier on the sea side and on the land side, and when a boom is erected. It is an object of the present invention to provide a container crane capable of continuous loading and unloading without a rail girder for a truck.

[0009]

In order to achieve the above object, the container crane of the present invention travels on a girder provided on the upper part of the container crane and an undulating boom connected to the sea side of the girder, and A sea trolley and a land trolley for hoisting and unwinding, and a shuttle girder that is provided so that it can be moved up and down below the girder and boom, and that it is retracted to the land side when the boom is upright and extends to the sea side when loading and unloading, and the shuttle girder And a container carrier truck that travels above.

According to a preferred embodiment of the present invention, the shuttle girder is provided with traveling rails for the container carrier in two steps, and lifts for raising and lowering the container carrier are provided at both ends thereof. The container carrier can be circulated on the shuttle girder.

Next, the operation of the present invention will be described. The trolley on the sea side runs with no load and stops at the position where cargo is loaded. At that position, the container is hoisted from the container ship, and the hoisted container is held. The container carrier is stopped just below the container, the container is unwound, and the container is transferred from the trolley to the carrier. The trolley runs to the land side and stops just below the land side trolley. The land-side trolley hoists the container from the trolley and holds it. After the trolley moves from directly below the land-side trolley, the land-side trolley lowers the container and places the container on a chassis or track truck waiting on the ground. When a container ship docks,
Raise the boom so that high parts such as bridges can pass through. Retract the shuttle girder to the land side before raising the boom. Therefore, it is not necessary to raise the shuttle girder. The shuttle girder can be moved up and down in order to shorten the trolley hoisting and unwinding distances by adjusting the shuttle girder position according to the height of the container on the container ship. is there.

If the shuttle girder is provided with upper and lower two-stage traveling rails and lifters are provided at both ends, a plurality of carriages can be circulated and traveled, so that there is only one rail and one carriage reciprocates. Efficiency can be improved compared to the case.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of the container crane of the present invention, and FIG. 2 is a front view of the container crane as seen from the sea side. In FIGS. 1 and 2, reference numeral 1 is a container crane, which can travel on rails 13 a laid on the quay 13. Container crane 1
A girder 2 and a boom 3 connected to the sea side of the girder 2 are laterally mounted on the upper part of the. The boom 3 can be erected by an unillustrated erection device as shown in FIG. Inside the girder 2 and the boom 3, as shown in FIG. 2, a pair of rails 3a are provided, and two trolleys 5 capable of traveling on the rails 3a are provided. The trolley provided on the sea side is the trolley 5a on the sea side,
The trolley provided on the land side is the land-side trolley 5b.
The trolley 5 travels when setting the cargo handling position, but during the cargo handling work, the container 4 is only hoisted and unwound.
In principle, do not drive.

The girder 2 and the boom 3 can be moved up and down, and when the boom stands up, it is pulled to the land side (shown by a chain line in FIG. 1), and when the container 4 is loaded, it is extended to the sea side (solid line in FIG. 1). A shuttle girder 6 is provided.

The shuttle girder 6 will be described in detail below. The shuttle girder 6 is shown in FIG.
It is formed in a corner frame. Reference numeral 8 denotes an elevating girder, which is composed of a member having a U-shaped cross section that is open toward the inside as shown in FIGS. 3 and 5, and accommodates the shuttle girder 6 slidably in the horizontal direction. The lifting girder 8 is vertically movable along a vertical rail 1c (see FIG. 5) provided inside the sea-side leg 1a and the land-side leg 1b of the container crane 1, as shown in FIG. Winch 9a
It is possible to move up and down by an elevating device 9 provided with. As shown in FIG. 5, inside the lifting girder 8, a roller 8a for supporting the shuttle girder 6 is provided, and a roller 8b is provided on the outer side, so that the elevator girder 8 can be smoothly moved up and down in a state of being in contact with the rail 1c. .

Beam 6a in the longitudinal direction of shuttle girder 6
Rails 11a and 11b are provided on the inner side of the rails in two steps, and a plurality of container carrier trucks (hereinafter referred to as trucks) 7 can run on the rails 11a and 11b. A lift 12 is provided at the sea-side end and the land-side end of the shuttle girder 6, and a short rail 12a is attached to the upper part of the lift 12 (see FIG. 3). The rail 12a is connected to the lower rail 11b when the lift 12 is lowered, and is connected to the upper rail 11a when the lift 12 is raised. The lift 12 moves up and down with the carriage 7 placed on the rail 12a. There is also a method of making the lift 12 into a pantograph form shown in FIG. In the figure, 12b is a cross link, 12c is a hydraulic cylinder, and 12d is a top plate to which the rail 12a is attached.

The tip of the shuttle girder 6 is supported by a shuttle girder supporting carriage 10 as shown in FIG. FIG. 4 is a front view of the shuttle girder support cart. As shown in the figure, the shuttle girder supporting carriage 10 includes a vertical beam 10d installed upward at both ends of a cross beam 10e.
The wheel 10c attached to the upper end of the vertical beam 10d is adapted to travel on the rail 3b attached to the outside of the girder 2 and the boom 3. 10a is a drive motor for the wheels 10c. Winches 10b are attached to both ends of the cross beam 10e, and a pulley 6b attached to the tip of the shuttle beam 6 is moved up and down via a wire rope.

The shuttle girder 6 can be retracted to the land side or pulled out to the sea side by raising the shuttle girder 6 to the highest position and then running the shuttle girder support carriage 10.

Next, the operation of this embodiment will be described. A case of unloading the container 4 from the container ship will be described. The sea-side trolley 5a is run to the position where the container 4 is rolled up. At the position, the spreader 5c is unwound and attached to the target container 4. Then, the container 4 is wound up, and the container 4 is held in the wound state. The dolly 7 is run just below the container 4 and stopped. The container 4 is unwound from the trolley 5a on the sea side, and the container 4 is transferred to a trolley. The dolly 7 travels to the land side and stops immediately below the land-side trolley 5b. The land-side trolley 5b hoists the container 4 from the carriage 7 and holds the state. After the carriage 7 has moved from directly under the land-side trolley, the land-side trolley 5b is unwound and the container 4 is transferred to the chassis 14 waiting on the ground. Chassis 14
Transports the container 4 to the container yard.

When a container ship berths, the boom 3 is erected so that a high place such as a bridge can pass through. Before the boom 3 is erected, the shuttle girder 6 is raised to the highest position, and in that state the shuttle girder support cart 10 is run to the land side, and the shuttle girder 6 is retracted to the land side. In addition, the trolley 5a on the sea side is also moved to the land side. As described above, in the container crane 1 of the present invention, since the shuttle girder 6 is retractable, unlike the container crane shown in FIG. 7, the shuttle girder 6 does not need to be erected even when the boom 3 is erected. Good. Further, the shuttle girder 6 can be moved up and down. By changing the height of the shuttle girder 6 in accordance with the stacking height of the containers 4 on the container ship, the distance for hoisting and unwinding the trolley 5 can be shortened. Because.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. For example, the shuttle girder 6 is provided with the rails 11 in upper and lower two stages, but it may be provided with only one stage. In that case, the carriage 7 reciprocates between the sea side trolley 5a and the land side trolley 5b.

[0022]

As described above, the container crane of the present invention is provided with a shuttle girder that can be raised, lowered, pulled out and retracted below the girder and the boom, and the trolley can be run on it. There is an excellent effect mentioned. (1) Since the shuttle girder may be retracted when the boom is erected, the load when the boom is erected can be small, and the equipment for erecting can be small. (2) It is not necessary to increase the height of the entire crane because the boom can be erected independently. (3) Since the shuttle girder is continuous to the land side, the dolly can continuously run from the sea side to the land side, and the operating efficiency is high.

[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 the container crane of the present invention viewed from the sea side.

FIG. 3 is a perspective view of a shuttle girder.

FIG. 4 is a front view of a shuttle girder support cart.

FIG. 5 is a front sectional view of a lifting girder and a shuttle girder.

FIG. 6 is a side view of the lift.

FIG. 7 is a side view of a conventional container crane.

FIG. 8 is an explanatory diagram of a circulating traveling state of the carriage.

FIG. 9 is a front view of a conventional container crane as seen from the sea side.

[Explanation of symbols]

 1 Container Crane 2 Girder 3 Boom 4 Container 5 Trolley 5a Sea Side Trolley 5b Land Side Trolley 6 Shuttle Girder 7 Container Transport Cart 8 Lifting Girder 11 Traveling Rail 12 Lift

Claims (2)

[Claims] 1. A girder provided on the upper part of a container crane and a sea-side trolley and land-side trolley that travel on a girder capable of undulating connected to the sea side of the girder for hoisting and lowering the container, and the girder and It is characterized in that it has a shuttle girder that can be lifted below the boom, retracts to the land side when the boom stands up, and overhangs to the sea side when loading and unloading, and a container carrier that runs on the shuttle girder. Container crane. 2. The shuttle girder is provided with traveling rails for the container carrier in upper and lower two stages, and lifters for raising and lowering the container carrier are provided at both ends thereof, and the container carrier is mounted on the shuttle girder. The container crane according to claim 1, wherein the container crane can be circulated.