WO2011043516A1

WO2011043516A1 - Dual boom structure, dual boom crane and ship mounted with the same

Info

Publication number: WO2011043516A1
Application number: PCT/KR2009/007978
Authority: WO
Inventors: 주한종; 김수현; 김정; 장인권; 홍윤식; 김은호; 이일석; 정윤섭; 김상만; 김병수; 박윤식; 곽병만; 오준호
Original assignee: 한국과학기술원
Priority date: 2009-10-08
Filing date: 2009-12-30
Publication date: 2011-04-14
Also published as: KR101141593B1; CN102666357A; KR20110038449A

Abstract

Disclosed is a dual boom structure including: a first trolley moving in the traverse direction along a first boom; a second boom connected to the first trolley to be supported thereby; a supporting joint connected to a point of the first trolley at a point of the second boom for supporting the second boom to be able to rotate; an auxiliary supporting die connected to another point of the first trolley at another point of the second boom and controllable in length; and a second trolley provided to the second boom and connected to a spreader, enabling the spreader to be raised or lowered. The crane mounted with the dual boom structure according to the present invention enables the control of the horizontal state or the position of the spreader in response to any one or more movements of heaving, rolling or pitching of the first boom according to the center support of the second boom by the supporting joint, the length control of the auxiliary supporting die and the length control of the cable.

Description

Dual boom structure, dual boom cranes and vessels equipped with them

The present invention relates to a marine crane, and more particularly to a crane that can control the attitude of the spreader according to the shaking of the ship and a ship that can be unloaded cargo at sea off the land by mounting it. However, the present invention is not limited to the offshore crane and may be applied to a general crane structure.

Maritime transportation using ships as a means of moving goods remotely takes up a large part of international trade because it uses less energy and lowers transportation costs compared to other means of transportation.

In recent years, in marine transportation such as container ships, large-scale ships are used to improve the efficiency of transportation, which is intended to secure the economics of transportation by increasing the transportation volume of the vessel. Accordingly, more and more ports are required to have mooring and unloading facilities for docking large vessels.

However, harbors that can dock large container ships are limited at home and abroad, and the construction of such ports requires a lot of expenses due to dredging to maintain the necessary port depth, as well as a large place. In addition, due to the construction of a large port has a lot of influence on the surrounding environment, such as causing a traffic jam or destruction of the coastal environment, there are many restrictions on the construction of a large port.

Accordingly, the invention relates to a mobile port (mobile harbor) capable of loading and unloading cargo without anchoring a large vessel to the inner wall of the port and anchored at sea off the land, and a method of transferring the cargo using the patent ( Registration number 10-0895604).

1 is a schematic diagram showing a state in which a crane 1 installed in a ship 50 serving as a mobile harbor performs a cargo C unloading operation for a container ship S. Referring to FIG. Here, the coordinates are defined as the longitudinal direction in the X direction and the transverse direction in the Y direction based on the direction of the ship 50.

In the case of the conventional crane 1, the trolley 20 moving from the crane boom 10 and the spreader 30 mounted thereto may move only in one direction (here, the transverse direction). Therefore, the cargo (ie, container) C, which is the object of unloading, is not tilted due to the shaking of the ship 50 or the crane 1, or the relative position between the spreader 30 and the cargo C is not maintained. There is a problem in that it is difficult to fasten or separate the spreader 30 and the cargo (C).

The present invention has been made in consideration of the above problems, the dual boom structure to enable stable cargo unloading with other vessels by controlling the attitude, horizontal state or position of the spreader in response to the fluctuations generated in the crane on the sea, It is an object to provide a dual boom crane and a ship equipped with the same.

The present invention relates to a first trolley moving laterally along a first boom, a second boom connected to and supported by the first trolley, and a point of the first trolley at one point of the second boom. A support joint to pivotally support the second boom, an auxiliary support adjustable to another point of the first trolley at another point of the second boom and provided with the second boom, and the spreader being lifted It provides a dual boom structure that includes a second trolley that is lowerably connected.

Here, one point of the second boom may be a point near the center of gravity of the second boom. In addition, the support joint may be a universal joint. The auxiliary support may be installed in plural to enable the multi-degree of freedom movement of the second boom. The support joint may be connected to a central beam crossing the second boom, and the plurality of auxiliary supports may be spaced apart from each other in the lateral and longitudinal directions with the support joint.

Furthermore, the dual boom structure may further include a second trolley movable longitudinally along the second boom. The apparatus may further include a third boom connected to and supported by the second trolley, and a third trolley movable laterally along the third boom.

Meanwhile, the present invention provides a dual boom crane in which the dual boom structure is installed. Dual boom crane according to the invention may further include a control unit for controlling the attitude of the spreader in response to the swing of the first boom.

The control unit may control the horizontal state of the spreader by adjusting the length of the auxiliary support in response to any one or more movements of the first boom, the rolling and the pitching. In addition, the controller may control the position of the spreader in response to any one or more of the motion of the first boom and rolling or pitching by adjusting the length of the cable to raise and lower the spreader.

The vessel provided with the dual boom crane according to the present invention can control the attitude of the spreader in response to the swing of the vessel.

According to the crane equipped with a dual boom structure according to the present invention, by the support center of the second boom and the length of the auxiliary support of the auxiliary support and the length of the cable, by the hebbing and rolling of the first boom or The horizontal state or position of the spreader may be controlled in response to any one or more movements of the pitching.

Accordingly, even in ships swaying in the blue, the spreader can be accurately positioned or seated on the container of the container ship to be unloaded, and the spreader and the container can be easily fastened and separated.

Therefore, the ship equipped with a dual boom crane according to the present invention, can efficiently handle the cargo transportation of the large vessels requiring deep water depth and can function as a mobile port will contribute to strengthen the future port system competitiveness.

1 is a schematic diagram showing a state in which a crane installed in a ship performs a cargo unloading operation for a container ship.

Figure 2 is a perspective view showing a schematic view of a dual boom structure according to an embodiment of the present invention.

3 is an exploded perspective view showing a schematic view of a dual boom structure according to an embodiment of the present invention.

4 is a front view illustrating a dual boom structure according to an embodiment of the present invention.

5 is a side view illustrating a dual boom structure according to an embodiment of the present invention.

6 is a view showing a state in which the spreader maintains the posture when there is pitching of a ship according to an embodiment of the present invention.

7 is a view showing a state in which the spreader maintains the posture when there is a rolling of the ship according to an embodiment of the present invention.

8 is a schematic view showing a dual boom crane installed in a ship according to an embodiment of the present invention performs a cargo unloading operation for a container ship.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that detailed descriptions of related well-known technologies or functions may obscure the gist of the present invention, the detailed description will be omitted.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

DETAILED DESCRIPTION Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, and in the following description with reference to the accompanying drawings, the same or corresponding components will be given the same reference numerals and redundant description thereof will be omitted. do.

Hereinafter will be described the configuration of a crane provided with a dual boom structure according to an embodiment of the present invention. Figure 2 is a perspective view showing a schematic view of a dual boom structure according to an embodiment of the present invention. 3 is an exploded perspective view showing a schematic view of a dual boom structure according to an embodiment of the present invention. 4 is a front view illustrating a dual boom structure according to an embodiment of the present invention. 5 is a side view illustrating a dual boom structure according to an embodiment of the present invention.

Dual boom structure according to an embodiment of the present invention, the first trolley 112 which is movable in the transverse direction along the first boom 110, and the second boom 120 connected to and supported by the first trolley (112). And a support joint 104 connected to a point of the first trolley 112 at one point of the second boom 120 to support the second boom 120 so as to be pivotable, and the second boom 120. And a spreader 140 which is connected to another point of the first trolley 112 at another point of the length controllable auxiliary support 106 and is connected to the second boom 120 and the cable 148 to move up and down. do.

The support joint 104 is implemented in the form of a hinge that allows the second boom 120 to pivot with respect to the first boom 110. By using a universal joint as the support joint 104, the second boom 120 can be biaxially pivoted. The point connected with the second boom 120 may be a point near the center of gravity of the second boom 120 (which may be a center of gravity calculated by including a component supported by the second boom 120.) have.

The auxiliary support 106 performs the function of an actuator whose length can be controlled. Auxiliary support 106 may be implemented as a hydraulic cylinder, a plurality of second boom 120 may be installed in a plurality to enable the movement.

Looking at the positional relationship between the support joint 104 and the auxiliary support 106, that is, the connection relationship between the first boom 110 and the second boom 120, the support joint 104 is a second boom 120 The cross beams are connected at the center beam 124, and the plurality of auxiliary supports 106 may be spaced apart from each other in the transverse and longitudinal directions with the support joint 104. More specifically, the support joint 104 is connected near the middle of the transversely long central beam 124 across the second boom 120, ie at the center of gravity of the second boom 120, so that the second boom ( It supports most of the load of 120). The two auxiliary supports 106 are installed on the longitudinally long end beams 126 provided at one end in the lateral direction of the second boom 120, and may be connected at both sides of the center beam 124, respectively.

The dual boom structure according to the embodiment of the present invention may further include a second trolley 122. The second trolley 122 may be integrally formed with the second boom 120 or may be fixed to the second boom 120 or may move longitudinally along the second boom 120. The first trolley 112 moves in the lateral direction and the second trolley 122 moves in the longitudinal direction, allowing the spreader 140 connected to the second boom 120 to be positioned at a desired position.

The dual boom structure may further include a third boom 130 connected to and supported by the second trolley 122 and a third trolley 132 movable laterally along the third boom 130. In this case, the spreader 140 is connected to the second boom 120 through the third trolley 132. In order to load or load the container, the first trolley 112 is used to transfer the spreader 140 laterally, and the third trolley 132 may be moved laterally to correct the position according to the swing of the ship. It becomes possible.

The crane having a dual boom structure according to an embodiment of the present invention is a control unit 150 for controlling the posture of the spreader 140 in response to the rocking of the first boom 110 (may be a crane or rocking of the ship). 8) may be further included.

The controller 150 may control the horizontal state or the position of the spreader 140 in response to any one or more motions of hebbing and rolling or pitching of the first boom 110 by adjusting the lengths of the one or more auxiliary supports 106. Can be. In addition, the controller 150 may control the position of the spreader 140 in response to any one or more movements of the moving and rolling or pitching of the first boom 110 by adjusting the length of the cable 148. Furthermore, the controller 150 may control the position of the spreader 140 not only for the rolling or pitching of the vessel but also for the translational movement by adjusting the movement of the second trolley 122 and the third trolley 132.

Hereinafter will be described the operation method of the dual boom crane and the ship according to an embodiment of the present invention. 6 is a view showing a state in which the spreader maintains the posture when there is pitching of a ship according to an embodiment of the present invention. 7 is a view showing a state in which the spreader maintains the posture when there is a rolling of the ship according to an embodiment of the present invention. 8 is a schematic view showing a state in which a crane installed in a ship according to an embodiment of the present invention performs a cargo unloading operation for a container ship.

As shown in FIG. 8, the side of the vessel 200 provided with the dual boom crane 100 and the side of the container ship S are docked with the dual boom crane 100 according to the embodiment of the present invention, and the crane 100 installed in the vessel 200. ) To unload the container, ie cargo (C). The spreader 140 moves along the first boom 110 to load or load the cargo C and to raise and lower the spreader 140 using the cable 148. At this time, the vessel 200 swings due to the influence of wind, blue, or algae in the sea. The swing may include a hebbing, rolling, or pitching, and in spite of the swing, the spreader 140 should be kept horizontal without being inclined while maintaining its position even in relation to the cargo (C). Can be done.

The vessel 200 provided with the dual boom crane 100 according to the present invention may control the posture of the spreader 140 in the controller 150 in response to the swing of the vessel. For example, even if there is a pitching of the vessel 200 (rolling from the perspective of the first boom 110), if the spreader 140 is not inclined, the controller 150 detects the pitch of the vessel 200 and assists. The spreader 140 can be kept horizontal by adjusting the hydraulic pressure of the hydraulic cylinder constituting the support 106 (see FIG. 6). Similarly, by the action of the controller 150, the auxiliary support 106 may be length controlled to maintain the horizontal state of the spreader 140 in response to the rolling (pitching in view of the first boom 110) of the ship 200. (See FIG. 7).

In addition, by three-axis control of the spreader 140 in accordance with the movement of the first trolley 112 (or third trolley 132) and the second trolley 122 and the length adjustment of the cable 148, blue and wind sea When the ship is swinging in the form of a hebbing, etc., the relative position between the spreader 140 and the unloading cargo C can be easily controlled. Furthermore, the spreader 140 is always controlled at a certain point so that fastening and separation between the cargo C and the cargo C can be quickly and easily performed.

Therefore, the ship 200 equipped with the dual boom crane 100 according to the present invention can efficiently handle the cargo transportation of the super-large container ship (S) that requires a deep depth and can function as a mobile port in the future harbor system It will contribute to strengthening competitiveness.

As mentioned above, although specific embodiment of this invention was described, this is only an illustration and this invention is not limited to this, It should be interpreted that it has the broadest range based on the basic idea disclosed in this specification. Those skilled in the art can change the material, size, etc. of each component according to the application field, it is possible to implement a pattern of the shape not shown by combining or replacing the disclosed embodiments, but this is also not departing from the scope of the present invention. In addition, those skilled in the art can easily change or modify the disclosed embodiments based on the present specification, it is apparent that such changes or modifications are included in the scope of the present invention.

Claims

A first trolley moving laterally along the first boom,

A second boom connected to and supported by the first trolley;

A support joint connected to one point of the first trolley at one point of the second boom to pivotally support the second boom;

An auxiliary support length adjustable and connected to another point of the first trolley at another point of the second boom,

A second trolley provided to the second boom and to which a spreader is liftably connected;

Including dual boom structure.
The method of claim 1,

One point of the second boom is a point near the center of gravity of the second boom structure.
The method of claim 2,

The support joint is a dual boom structure that is a universal joint.
The method of claim 1,

The auxiliary support is a dual boom structure that is installed in plurality in order to enable the multi-degree of freedom movement of the second boom.
The method of claim 4, wherein

The plurality of auxiliary support structure is a dual boom structure which is installed at a point spaced apart from the support joint in the transverse and longitudinal direction, respectively.
The method of claim 1,

The second trolley is a dual boom structure that moves in the longitudinal direction along the second boom.
The method of claim 6,

A third boom connected to and supported by the second trolley;

A third trolley moving laterally along the third boom;

Dual boom structure containing more.
A dual boom crane provided with the dual boom structure according to any one of claims 1 to 7.
The method of claim 8,

And a control unit for controlling the attitude of the spreader in response to the swing of the first boom.
The method of claim 9,

The control unit is a dual boom crane for controlling the horizontal state or position of the spreader in response to any one or more of the motion and the rolling or pitching of the first boom by adjusting the length of the auxiliary support.
The method of claim 10,

The control unit is a dual boom crane for controlling the position of the spreader in response to any one or more of the motion of the first boom and rolling or pitching by adjusting the length of the cable to raise and lower the spreader.
Ship with dual boom crane of claim 8.
The method of claim 12,

And a control unit for controlling the attitude of the spreader in response to the shaking of the ship.