JPH0592892A - Cargo handling bridge crane device at quay and operating method thereof - Google Patents

Abstract

PURPOSE:To improve the cargo handling capacity of a bridge crane at a quay. CONSTITUTION:A bridge crane body, traveling along a travel rail 8 provided on a quay, is provided with plural traverse rails 14. Plural crabs 15, 16 are disposed in the state of being traversable along the respective traverse rails l4. Each crab is provided with a hoisting means, and a belt conveyor 6 is provided along the travel rail within the traverse movement range of the crab so as to improve cargo handling capacity. Further in the period of unloading action onto the conveyor by at least one of plural crabs 15, 16, the travel of the crane body is not performed to prevent the oscillation of the crane body. Loads can be thereby loaded correctly onto the conveyor 1, so that there is no fear of the loads falling from the conveyor by accident.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridge crane device for cargo handling at a wharf and its operating method.

[0002]

2. Description of the Related Art Conventionally, it has been desired to increase the cargo handling capacity of a cargo handling crane used on a wharf. In the conventional cargo handling bridge crane device, one club trolley is provided, and therefore, in order to increase the cargo handling capacity, it is necessary to install a plurality of such cargo handling bridge crane devices on the wharf. is there. When a plurality of loading bridge crane devices are installed on the wharf in this way, a large installation space is required on the wharf. When the ship is large, it is possible to carry and carry cargo by using such a plurality of installed bridge crane devices for cargo handling, and it is possible to improve the cargo handling capacity. In some cases, even if a plurality of cargo handling bridge crane devices are installed, it is not possible to carry out the cargo handling of a single ship using the plurality of cargo handling bridge crane devices.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a bridge crane device for cargo handling at a wharf and a method of operating the same, which requires a small installation space and can improve the cargo handling capacity. Is.

[0004]

DISCLOSURE OF THE INVENTION The present invention is directed to a bridge-type crane body provided with a traveling rail provided on a wharf and a plurality of traverse rails extending in a direction crossing the traveling rail above the wharf, and a traveling crane body. A traveling means that travels along the rail, a plurality of clubs that can traverse along each traverse rail, a hoisting means that is provided for each club, and along the traveling rail within the traverse range of the club on the wharf. It is a bridge-type crane device for loading and unloading at a wharf, characterized in that it includes a conveyor arranged as follows.

Further, the present invention is a method of operating a bridge crane device for cargo handling at a wharf, wherein the bridge crane device for cargo handling intersects a traveling rail provided on the wharf and a traveling rail above the wharf. Bridge crane main body provided with a plurality of transverse rails extending in the direction, traveling means for traveling the crane main body along the traveling rails, a plurality of clubs traversable along the respective traverse rails, and windings provided for each club. Upper means and a conveyor arranged along the traveling rail within the traversing range of the club on the wharf for carrying a load between the ship and the conveyor, and at least one club of the plurality of clubs. According to the operating method of the bridge crane device for loading and unloading at a wharf, the traveling means of the crane main body does not drive during the operation of unloading the cargo on the conveyor. That.

[0006]

According to the present invention, the bridge crane main body is provided with a plurality of traverse rails, and this bridge crane main body can be traveled by traveling means along traveling rails provided on the wharf. it can. Multiple clubs are provided so that they can move laterally along each traverse rail,
Each club is provided with a hoisting means, and a conveyor such as a belt conveyor is arranged on the wharf along a traveling rail, and the conveyor is arranged within the traverse movement range of the club. Therefore, the present invention requires less installation space as compared with the configuration of the above-described prior art in which a plurality of cargo handling bridge crane devices equipped with one club are installed to improve the cargo handling capacity. Even with a small ship, the cargo handling bridge crane device according to the present invention can be used to carry out cargo handling work with a plurality of clubs, and its cargo handling capacity can be improved, and a large amount of cargo can be handled in a short time. It becomes possible to carry out cargo handling and transportation.

Further in accordance with the invention, during the operation of unloading onto the conveyor by at least one of the plurality of clubs, the remaining clubs may traverse and move, for example to a standby position. However, since the crane main body is prevented from traveling by the traveling means, it is possible to accurately lower the load on the conveyor by the at least one club, and there is a risk of accidentally dropping the load outside the conveyor. Absent.

[0008]

1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a simplified sectional view seen from the front thereof, and FIG. 3 is a simplified plan view thereof. is there. With reference to these drawings, a cargo handling bridge crane 2 provided on a wharf 1, which is a berth, is used to lift a load 5 from a ship 4 floating in a sea 3, and a belt provided on the wharf 1. It is possible to carry out a cargo handling and transporting operation in which the cargo is loaded onto the conveyor 6, and it is also possible to load the cargo 5 onto the truck 7. A pair of traveling rails 8 are provided on the wharf 1, and the bridge-type crane body 9 can be traveled by traveling means 10 that is driven to travel along the rails 8.

The bridge-type crane body 9 has legs 11,
A girder 12 fixed horizontally between the leg portions 11 is fixed above the wharf 1. The girder 12 is provided with a plurality (2 in this embodiment) of traverse rails 13 and 14 that intersect the traveling rail 8 at 90 degrees in a horizontal plane, for example. Clubs 15 and 16 which are trolleys are provided along the traverse rails 13 and 14 so as to be able to traverse. Each club 15, 16 is provided with hoisting means 19, 20 with hooks 17, 18.

The conveyor 6 extends between the legs 11 of the bridge-type crane body 11 along the traveling rails 8, that is, in the direction perpendicular to the paper surface of FIG. 1, the horizontal direction of FIG. 2, and the vertical direction of FIG. The load 5 can be transported. This conveyor 6
Are arranged in the transverse movement range of the clubs 15 and 16 as described above. A driver's seat 21 is provided above the wharf 1 on the leg 11 on the sea 3 side, and the driver can perform a driving operation while watching the load 5 in the ship 4 at the driver's seat 21.

FIG. 4 is a block diagram showing the electrical construction of the cargo handling bridge crane device shown in FIGS.
Is a diagram for explaining the operation, and FIG. 6 is a flowchart for explaining the operation. The processing circuit 22 realized by a microcomputer or the like is given a signal from the operating means 23 provided in the driver's seat 21, whereby the processing circuit 22 controls the transverse movement of the clubs 15 and 16, and The hoisting means 19 and 20 provided in the clubs 15 and 16 of FIG. First movement detecting means 24 is provided to detect the transverse movement of the first club 15 and the movement of the hoisting means 19 provided therein, and similarly, the transverse movement of the second club 16 and the same. A second motion detecting means 25 is provided to detect the motion of the hoisting means 20.

FIG. 5 (1) shows the operation of the first club 15 and the hoisting means 19 provided therein, and FIG.
Is the second club 16 and the hoisting means 20 provided therein.
Shows the operation of. Before time t1, step a1 in FIG.
To step a2, the second club 16 moves to the conveyor 6
Is detected directly by the second motion detecting means 25, and when the club 16 is directly above the conveyor 6, the process proceeds to step a3 and the second club 16 is kept stopped.

At step a4, the first club 15 moves the ship 4
Is detected directly by the first motion detecting means 24, and when the first club 15 exists immediately above the ship, the process proceeds to step a5, and the first club 15 is stopped. Prior to time t1, the hook 17 provided on the hoisting means 19 of the first club 15 is emptied into the ship 4, and the load 5 is slung in the ship 4 by using the suspenders 26. ..

Therefore, after the time t1, when the completion of the slinging work on the ship is input by the operation of the operation means 23 of the driver's seat 21 at step a6, the process proceeds to step a7 and the hoisting means 19 loads the load 5 on the ship. When it is lifted above 4 and reaches a predetermined position, the hoisting means 19 is stopped at time t3. The other club 16 is above the conveyor 6 as described above, and the load 5a is in a state of being lifted by the hoisting means 20 as indicated by the reference numeral 5a, and during the period from time t1 to t5. The load 5a is unloaded on the conveyor 6 by the hoisting means 20 in step a8 as indicated by reference numeral 5b. Step a9
Then, during the period from time t2 to t4, the load 5b on the conveyor 6
The hanging work is removed, and the hanging tool 27 is removed from the load 5b. At times t4 to t5, after the load 5b is loaded on the conveyor 6, the hoisting means 20 hoists the hoisting tool 27 and the hook 18 above the conveyor 6.

In this way, at the time t1 to t3, the load 5 is hoisted from the ship 4 by using the hoisting means 19 provided in the first club 15, and at the same time, at the time t1 to t2, the second club 16 is hoisted. The load 5b is loaded on the conveyor 6 by using the means 20, and the bridge type crane main body 11 is moved by the traveling means 1.
Since the traveling by 0 is not performed, the girder 12 does not sway undesirably, so that the load 5b on the conveyor 6 by the second club 16 can be reliably loaded, and the load 5b is accidentally dropped from the conveyor 6. There is no danger of it getting lost. The loads 5, 5a and 5b may be, for example, coils of heavy steel plates.

Since the load 5b is loaded on the conveyor 6 when the load 5 is hoisted from the ship 4, the operations of the hoisting means 19 and 20 overlap with each other in time, and the working time is shortened. be able to.

At step a10, the second club 16 traverses to the left in FIG. 1 toward the ship 4, and this operation is performed at times t5 to t7 in FIG. 5 (2). Step a11
Then, the first club 15 receives the load 5 during the period from time t3 to time t6.
Is traversed toward the conveyor 6 to the right in FIG. The fact that the first club 15 has just arrived at the conveyor 6 in step a12 is detected by the first motion detecting means 24 at time t6.
If detected in step a13, the first club 15 is stopped in step a13.

At step a14, the second club 16 moves the ship 4
When it is detected by the second motion detecting means 25 at time t7, the second club 16 is stopped at step a15.

The hoisting means 20 of the second club 16 is the driver seat 2
1 is operated manually by operating the operation means 23. That is, from time t7 to t8, the hook 18 of the hoisting means 19 provided in the second club 16 is emptied into the ship 4, and at time t8, the unloading operation is stopped. From time t8 to t9, the hook 18 is manually operated in the ship 4.
The load 5 is slung by using the hanging tool 27.

At time t9, hoisting means 20 in the ship 4
Completion of the slinging work of the load 5 using the hanging tool 27 on the hook 18 of the operator means 2 to the processing circuit 22 of the operator.
3 is input, the process moves from step a16 to step a17, and the load 5 is hoisted by the hoisting means 20 provided in the second club 16, and the hoisting operation is performed at times t9 to t11. .. In the next step a18, during time t9 to t10, the hoisting means 19 of the first club 15 suspends the load 5a onto the conveyor 6 until time t10. Step a1
9 shows the first club 1 during the period from time t10 to t12.
The load 5b on the conveyor 6 of No. 5 is placed on the conveyor 6 with the hanging load removed, and thereafter, the suspending tool 26 and the hook 17 are idle-lifted immediately above the conveyor 6 at times t12 to t13.

At step a20, the first club 15 is
From immediately above the conveyor 6 to immediately above the ship 4 time t13 to t1
In step a21, the second club 16 suspends the load 5 and traverses from just above the ship 4 to just above the conveyor 6 at times t11 to t14.

After step a21 to step a22 again, the process moves from step a1 to step a2, and when it is detected by the second motion detecting means 25 that the second club 16 has just arrived on the conveyor 6, the steps a2 to a3. Then, the transverse movement of the second club 16 is stopped. Further, in step a4, when the first motion detecting means 24 detects that the first club 15 has just arrived above the ship 4, the transverse movement of the first club 15 is stopped in step a5.

Regarding the first club 15, time t15 to t
At 16, the hook 17 and the hanger 26 are unloaded into the boat 4 by the hoisting means 19 of the first club 15. At times t16 to t17, the load 5 in the ship 4 is used by the hanger 26.
Sled work is performed. Such time t15 to t17
The operation of is performed manually. The operation after time t17 is
It is the same as the operation after step a10. Such a similar operation is repeated, and the load 5 from the ship 4 can be loaded and transported on the conveyor 6. First and second clubs 15,1
As described above, the traverse movement of 6 is time t3 to t6, t5 to t5.
Since they overlap in time like t7; t13 to t15; t11 to t14, the working time can be shortened.

As another embodiment of the present invention, the club 15,
16 may be provided in one girder 12 together with a plurality of traverse rails 13 and 14.

FIG. 7 is a diagram for explaining the operation of still another embodiment of the present invention. In this embodiment, the operation of the first club 15 and the hoisting means 19 provided therein is shown, and the same reference numerals t1 to t9 are shown in the portions corresponding to FIG. 5 (1) described above. .. Particularly, in this embodiment, when the first club is lifting the load 5 from the ship 4 at times t1 to t3, the transverse movement of the club 15 is performed at times t3a to t6 due to temporal overlap. This can further reduce the time. While the hoisting speed is constant, the club 15
The horizontal movement is performed at time t3a, and the hook 17 is stopped during the constant speed of the horizontal movement, which is advantageous in that the operation is stabilized. Other operations are similar to those of the above-mentioned embodiment.

[0026]

As described above, according to the present invention, it is possible to travel the bridge crane main body along the traveling rail on the wharf by the traveling means, and the bridge crane main body is provided with a plurality of traverse rails. Each traverse rail is provided with a club movably in the transverse direction, the club is provided with hoisting means, and on the wharf, a conveyor is arranged along the traveling rail within the traverse movement range of the club. Because
During the operation of unloading on the conveyor by at least one of the plurality of clubs, the remaining clubs may lift the load from the ship, and the at least one club may be installed on the ship from above the conveyor. When traversing upwards, the remaining clubs can be moved from the ship onto the conveyor. In this way, the hoisting and hoisting and the traverse movement of the hoisting means of each club are temporally overlapped with each other, and thus the time required for cargo handling can be shortened. Of course, in such a configuration, since one bridge-type crane main body is provided with a plurality of clubs, the installation space at the wharf can be made smaller and the cargo handling capacity can be improved.

Furthermore, according to the present invention, during the operation of unloading the conveyor by the at least one club, the traveling means of the crane main body is prevented from traveling, so that the at least one club is operated. When unloading a load on the conveyor, it is possible to reliably unload the load from the club without accidentally dropping the load from the conveyor.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a bridge crane device for cargo handling at a wharf according to one embodiment of the present invention, as seen from the side.

FIG. 2 is a simplified sectional view of the cargo handling bridge crane apparatus seen from the front.

FIG. 3 is a simplified plan view of a cargo handling bridge crane device.

FIG. 4 is a block diagram showing an electrical configuration of the embodiment shown in FIGS.

FIG. 5 is a diagram for explaining an operating method of the cargo handling bridge crane device.

6 is a flowchart for explaining the operation of the processing circuit 22 in FIG.

FIG. 7 shows a club 15 and hoisting means 1 according to another embodiment of the present invention.
It is a figure for demonstrating operation | movement of 9.

[Explanation of symbols]

 1 Wharf 2 Bridge Crane Device for Cargo Handling 3 Sea 4 Ships 5, 5a, 5b Cargo 6 Conveyor 8 Traveling Rail 9 Bridge Crane Main Body 10 Traveling Means 11 Legs 12 Girder 13, 14 Traverse Rail 15 First Club 16 Second Club 17, 18 Hook 19, 20 Hoisting means 21 Driver's seat 22 Processing circuit 23 Operating means 24 First motion detecting means 25 Second motion detecting means 26, 27 Hanging device

Claims (2)

[Claims] 1. A bridge-type crane main body comprising a traveling rail provided on a wharf, a plurality of traverse rails extending in a direction above the wharf and intersecting the traveling rail, and traveling means for traveling the crane main body along the traveling rail. A plurality of clubs that can traverse along each traverse rail, hoisting means provided for each club, and a conveyor that is arranged along the traveling rail within the traverse range of the club on the wharf. A bridge crane device for loading and unloading cargo at a wharf. 2. A method of operating a cargo handling bridge crane device at a wharf, wherein the cargo handling bridge crane device extends in a direction intersecting with the traveling rail provided on the wharf and above the wharf. A bridge-type crane body having a plurality of traverse rails, traveling means for traveling the crane body along the traveling rails, a plurality of clubs that can traverse along each traverse rail, and hoisting means provided for each club. A conveyor arranged along the traveling rail within the transverse travel range of the club on the wharf, carrying a load between the ship and the conveyor, the conveyor being provided by at least one club of the plurality of clubs. A method for operating a bridge crane device for loading and unloading at a wharf, characterized in that the traveling means of the crane main body does not travel during the operation of unloading the crane.