KR101818175B1 - The device for actively to prevent the twisting on mooring floating marine structure - Google Patents

Abstract

The present invention relates to a device for preventing distortion of an offshore floating body by controlling tension applying to a rope connected to an offshore floating body within a set tolerance limit when mooring an offshore floating body in the sea. The device for actively preventing distortion of an offshore floating body comprises: a floating main body which is connected to a rope, and provides a space for offshore work while floating in a state of being fixed in the sea; a winch which is installed in the upper part of the floating main body in order to recover or release the rope for fixing an offshore structure in the sea; a fairlead which is installed in a part of the floating main body, and guides the rope to the winch while allowing the rope to penetrate thereof; a braking unit which is installed in a part of the floating main body by being separated from the fairlead at set intervals, where the rope is penetrated along with the fairlead, and which controls the speed of the rope recovered to the winch at a set speed; and a controller which is installed in a part of the floating main body, and is connected with the winch and the braking unit in order to control the operation of the winch and the braking unit. In addition, the braking unit can control the speed of the rope recovered through the winch at a set speed by using pressurization caused by external force.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device for effectively preventing distortion of a marine vessel during mooring,

More particularly, the present invention relates to an apparatus for actively preventing warpage of a marine vessel while a marine vessel is moored while controlling the speed of the mooring rope to be recovered.

In general, bridges for connecting islands far from the sea from the sea, dolphin-type docking facilities or breakwaters are usually built on the sea and are usually made of reinforced concrete.

Floating structures floating on the sea surface are very advantageous in terms of construction cost rather than gravity type structures that are self-sustaining by their own weight, and thus they are utilized in the construction of various sea structures.

In the float-type structure, a part of the main body part is floated on the sea surface while being locked on the sea surface, and a floating space for providing buoyancy to the structure is provided in the inside thereof. have.

In the conventional float-type structure, each unit unit is manufactured in advance at the land-based manufacturing site close to the coast by using a concrete material, and is then launched into the sea using a crane or the like, Can be constructed.

Alternatively, each floatable concrete unit unit may be manufactured at a dry dock facing the sea, then the gate of the dry dock may be opened to fill the seawater and the unit units may be launched into the sea, It is also possible to construct the body portion as a single structure.

Alternatively, a floating dock of a large structure may be floated in the sea, the floating dock may be made up of individual float concrete unit units, the float dock may be settled to some extent, You can also build a long connection.

Meanwhile, a mooring device provided in such a conventional floating structure uses a conventional cable or a chain. A plurality of cables or chains are connected to a lower portion of the floating structure, and an end thereof is fixed to an anchor, It is difficult to appropriately cope with the change in the water level due to the difference in the wave or tidal current generated in the sea.

For example, in a conventional mooring device, one end of a cable or a chain is fixed to the lower end of the body portion of the floating structure and the other end is fixed to the anchor. If the sea level is lowered due to the difference in the tide distance, The position is lowered so that the cable or chain is slackened and sagged downward, the position of the floating structure is changed, and it is difficult to obtain stable mooring effect.

In addition, if the sea level rises, the float structure rises with the sea level. In such a case, the tension of the cable or the chain becomes excessive and there is a fear of the breakage. Therefore, when designing cables, chains, anchors, etc., the clearance tolerance must be designed to be excessively large in order to prevent such a problem, which raises construction costs and makes it difficult to construct a stable floating structure.

Korean Patent Laid-Open No. 10-2009-0129003 (entitled: Floating Structure Mooring Device Using Heavyweight)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a method of controlling a tension limit angle (theta) And an object of the present invention is to provide an apparatus for actively preventing warpage of a marine vessel having a function of controlling a marine vessel.

In order to achieve the above object, the present invention provides an apparatus for actively preventing warpage during mooring of a maritime inflow of fluid, wherein a tension acting on a rope connected to a maritime fluid at the time of mooring the maritime inflow is set to a set allowable limit A floating body connected to the rope and fixed in the sea so as to float and provide a space for a marine operation; A winch installed on an upper portion of the floating body to recover or release the rope for fixing the floating structure; A pair of leads installed on a part of the floating body and guiding the rope to the winch while penetrating the rope; A braking unit installed at a part of the floating body in a state in which the distance set in the pair lead is spaced apart, the rope passing through with the pair lead, and controlling the speed at which the rope is recovered to the winch at a predetermined speed; And a controller installed at a part of the floating body and connected to the winch and the braking unit to control the operation of the winch and the braking unit, wherein the braking unit is configured to be recovered through the winch The recovery speed of the rope can be controlled at a predetermined speed.

The braking unit may further include: a first braking member installed between the pair lead and the winch in the floating body and controlling the speed of collection of the rope at a predetermined speed under the control of the controller; And a second braking member which is made of the same construction as the first braking member and installed at a lower portion of the pair lead to control the collection speed of the rope at a predetermined speed.

The first and second braking members may include a rope holder installed at a part of the floating body and through which the rope penetrates; And a stopper installed on a part of the rope holder to control the collection speed of the recovered rope.

The stopper may include an air tube which is manufactured to correspond to the inner circumferential surface of the rope holder and is installed along the inner circumferential surface of the rope holder so as to surround the rope. A hydraulic pump installed at an upper portion of the floating body to supply or discharge the hydraulic pressure to the air tube under the control of the controller; And a hydraulic line connected to the hydraulic pump and the air tube through holes formed in the rope holder to provide a passage through which the hydraulic pressure moves.

In addition, the rope holder may include at least one engaging piece protruding outwardly from both sides along the longitudinal direction so as to be detachably connectable to the floating body, and having at least one screw hole formed therein; And a coupling bolt detachably coupled to a screw hole formed in the coupling piece and a fixing hole formed in the floating body in correspondence with the screw hole.

Also, the air tube may be manufactured using a synthetic resin.

The present invention provides a device for actively preventing warpage during mooring of an offshore fluid, wherein a braking unit is provided on a part of the floating body so as to have a small MBL (Mooring Breaking Limit) when the mooring line is moored in the sea, It is possible to use a thin rope while controlling the recovery speed of the rope, thereby reducing the cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a device for actively preventing warpage of a marine vessel in accordance with an embodiment of the present invention. FIG.
2 is a partially enlarged view of the braking unit.
3 is a side view of the anti-skid device.
4 is a view showing another embodiment of the braking unit.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. It should also be understood that the position or arrangement of individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

FIG. 1 is a perspective view of an apparatus for actively preventing warpage during mooring of a marine vessel fluid according to an embodiment of the present invention, FIG. 2 is a partially enlarged view of the braking unit, FIG. 3 is a side view of the anti- 4 is a view showing another embodiment of the braking unit.

As shown in FIGS. 1 to 4, in an apparatus for preventing warpage of a marine vessel fluid by controlling a tension acting on a rope connected to a marine vessel fluid at a predetermined allowable limit when the marine vessel fluid is moored in the sea, The present invention may include a floating body 100, a winch 200, a fair lid 300, a braking unit 400, and a controller 700.

In other words, it is a device for preventing twisting of the mooring rope caused by weathering on the marine floors. Weather vaning is a device for preventing a ship or floating structure from moving in the direction of wind, To move.

Also, the rope 30 can be used by adopting a steel wire or chain chain method in which a plurality of strands are twisted like a twisted pair to increase the strength.

The floating body 100 is connected to the rope 30 and is fixed at the sea so as to float to provide a space for a marine operation.

The floating body 100 is made of polyethylene (PE), preferably medium density polyethylene (MDPE) or high density polyethylene (PE), which is excellent in corrosion resistance, mechanical strength and recyclability and can be easily and firmly adhered and assembled by a heat- HDPE), so that the buoyant material is not easily broken due to the wave or external impact as well as the installation process is simplified, the lifetime and safety are improved, and the water area where the floating body is installed is separated from the fragments Can be prevented.

The winch 200 may be installed at the upper portion of the floating body 100 to recover or release the rope 30 that fixes the floating body 100 at sea.

The pair lead 300 is installed on a part of the floating body 100 and can guide the rope 30 to the winch 200 through the rope 30.

The fair-lead (320) (fair-lead) may consist of rollers as a facility to prevent abrasion of the mooring ropes and the chock, which is the hole through which the mooring rope goes out.

The braking unit 400 is installed in a part of the floating body 100 with a predetermined distance from the pair lead 300. The rope 30 is passed through together with the pair lead 300, The speed recovered to the winch 200 can be controlled at a predetermined speed.

The braking unit 400 can control the recovery speed of the rope 30 recovered through the winch 200 at a predetermined speed by pressing the rope 30 to a predetermined pressure under the control of the controller 700. [

The braking unit 400 may include a first braking member 410 and a second braking member 420.

The first braking member 410 is installed between the pair lead 300 and the winch 200 in the floating body 100 and controls the recovery speed of the rope 30 at a predetermined speed under the control of the controller 700 .

The second braking member 420 may be constructed in the same manner as the first braking member 410 and may be installed under the pair lead 300 to control the recovery speed of the rope 30 at a predetermined speed.

The first and second braking members 410 and 420 may include a rope holder 500 and a stopper 600.

The rope holder 500 may be installed in a part of the floating body 100 and the rope 30 may be penetrated.

The rope holder 500 may include a coupling piece 510 and a coupling bolt 520.

The coupling piece 510 may have a structure in which at least one screw hole 500 is formed by projecting a length set outward from both sides along the longitudinal direction so as to be detachably connectable to the floating body 100.

The coupling bolt 520 may be detachably coupled to the fixing hole 70 formed in the floating body 100 corresponding to the screw hole 50 and the screw hole 50 formed in the coupling piece 510.

That is, the rope holder 500 can be detachably attached to the floating body 100, and it is easy to repair or maintain the robot by easy separation by removing the coupling bolts 520 in case of failure or wear.

A method of mounting the rope holder 500 on the floating body 100 may include a coupling rail and a corresponding slide on corresponding parts of the floating body 100 and the rope holder 500, Or a method in which a clamp is provided on the floating body 100 and the rope holder 500 is fixed.

The stopper 600 can be installed at a part of the rope holder 500 to control the collection speed of the recovered rope 30 at a predetermined speed.

The stopper 600 may include an air tube 610, a hydraulic pump 620, and a hydraulic line 630.

The air tube 610 is a component that is manufactured corresponding to the inner circumferential surface of the rope holder 500 and is installed along the inner circumferential surface of the rope holder 500 to surround the rope 30.

The air tube 610 can be manufactured using a synthetic resin excellent in stretchability and durability.

The synthetic resin used as the material of the air tube 610 may be selected from the group consisting of styrene butadiene rubber (SBR), butadiene rubber (BR), ethylene propylene rubber (EPR), polyurethane (PU), polymethylmethacrylate (PMMA) (P4VP), polystyrene-butadiene-block (SBS), polyimide (PI), polyurethane (PU), polyacrylonitrile (PAN), polyvinyl chloride (PVC), polypropylene (ABS), polycarbonate / acrylonitrile butadiene styrene (PC / ABS), polyethylene (PE), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyphenylene sulfide (HDPE), crosslinked polyethylene (XLPE), tetraorthosilicate (TEOS), polyaniline, polythiophene, polyethylene dioxythiophene (PEDOT), polycarbonate (PC), nylon, low density polyethylene (LDPE), high density polyethylene , Polyimide, polystyrene sulfonate (PSS) , Polypyrrole, polyacetylene, poly p-phenylene, poly p-phenylene sulfide, poly p-phenylenevinylene, polythiophene-polythienylenevinylene, polysulfone, polyethersulfone, polyethylene naphthalate and polyvinyl Alcohol (PVA), and the like.

The air tube 610 may also be removably formed in the rope holder 500. That is, the air tube 610 may be detachably coupled to the hydraulic line 630 through a hole formed in the rope holder 500, such that the air tube 610 and the rope holder 500 may be separated from each other, A fastener, a magnet, or the like may be installed or bolt holes may be formed to enable the coupling using the bolt, so that only the air tube 610 can be separated and the damaged or worn air tube can be easily replaced.

The hydraulic pump 620 is installed on the upper portion of the floating body 100 and can supply or discharge the hydraulic pressure to the air tube 610 under the control of the controller 700.

The hydraulic pump 620 (hydraulic pump) is a device for converting the mechanical energy supplied from the outside into the pressure energy of the hydraulic system operating oil. Since a high pressure is required, a positive displacement type is mainly used.

Generally, a gear type that presses using a gap between two rotating gear teeth, a vane type that presses the hydraulic oil by using a vane provided on the rotating shaft, A rotary piston type in which the volume in a plurality of parallel cylinders is made smaller in accordance with the rotation direction of the shaft, a reciprocating piston type in which the rotary motion is converted into a reciprocating motion and the hydraulic oil in the cylinder is directly pressurized by the piston piston type).

It can also be divided into fixed delivery type with a constant pushing volume and variable delivery type with its volume changing during operation.

More specifically, the operator actively operates the hydraulic pump 620 under the control of the controller 7000 to provide the air pressure of the air tube 610 while supplying or discharging the hydraulic pressure set to the air tube 610 through the hydraulic line 630 It is possible to control the recovery speed of the rope 30 by tightening or loosening the rope 30 by adjusting it.

The hydraulic line 630 is connected to the hydraulic pump 620 and the air tube 610 through holes formed in the rope holder 500 to provide a passage through which the hydraulic pressure moves.

The controller 700 is installed in a part of the floating body 100 and is connected to the winch 200 and the braking unit 400 to control the operation of the winch 200 and the braking unit 400.

In addition, the present invention may further include an alarm, which is installed on a part of the floating body 100 to notify when the collection speed of the mooring rope 30 connected to the floating body 100 exceeds the set speed.

The present invention relates to an operation method of an apparatus for actively preventing warpage during a mooring of a maritime fluid, wherein an operator collects a rope (30) using a winch (200) installed on the floating body (100) The speed of the mooring rope 30 is controlled by controlling the operation of the braking unit 400 provided on a part of the floating body 100 through the controller 700 in order to stably suspend the mooring rope 30 in close proximity to the pair lead 300 It is possible to prevent the floating body 100 from being warped during mooring.

Specifically, the operator operates the hydraulic pump under the control of the controller 700 and adjusts the air pressure of the air tube 610 while supplying or discharging a predetermined hydraulic pressure to the air tube 610 connected through the hydraulic line So that the collection speed of the rope 30 can be controlled by tightening or loosening the rope 30.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And such variations and modifications are intended to fall within the scope of the appended claims.

10: Anti-warping device
30: Rope
50:
70: Fixing hole
100: Floating body
200: Winch
300: Fairlead
400: Braking unit
410: first braking member
420: second braking member
500: Rope holder
510:
520: coupling bolt
600: Stopper
610: Air tube
620: Hydraulic pump
630: Hydraulic line
700: controller

Claims (6)

An apparatus for preventing warpage of a marine vessel fluid by controlling a tension acting on a rope connected to a marine vessel fluid at a predetermined allowable limit when the marine vessel fluid is moored in the sea,
The present invention relates to a method for active control of warping at the time of mooring of a maritime fluid having a function of performing active control so that the allowable limit of the tension is set to be lower than the MLB (Mooring Breaking Limit) so that the warping limit angle (theta) A floating body connected to the rope and fixed in the sea so as to float and provide a space for a marine operation;
In order to stably float the floating body in the sea while collecting the rope, the operation of the braking unit installed in a part of the floating body close to the pair lead is controlled through the controller, and the recovery speed of the floating rope is controlled, A winch installed on an upper portion of the floating body to prevent the body from being warped and to recover or release the rope at the sea to fix the floating structure;
A pair of levers installed on a part of the floating body and guiding the rope through the rope while guiding the rope to the winch, comprising: a pair of rollers configured to prevent abrasion of the mooring line and the mooring line,
A braking unit installed at a part of the floating body in a state in which the distance set in the pair lead is spaced apart, the rope passing through with the pair lead, and controlling the speed at which the rope is recovered to the winch at a predetermined speed;
And a controller installed at a part of the floating body and connected to the winch and the braking unit to control operation of the winch and the braking unit,
The braking unit includes:
Controls the rope to a set speed by pressing the rope under a control of the controller to set the recovery speed of the rope recovered through the winch,
The braking unit includes:
A first braking member installed between the pair lead and the winch in the floating body and controlling the collection speed of the rope at a predetermined speed under the control of the controller;
A second braking member that is formed in the same configuration as the first braking member and installed at a lower portion of the pair lead to control the speed of collection of the rope at a predetermined speed;
Wherein the first and second braking members
A rope holder installed at a part of the floating body and through which the rope passes; And
And a stopper installed on a part of the rope holder to control the recovery speed of the rope recovered. delete delete The method according to claim 1,
The stopper
An air tube made corresponding to the inner circumferential surface of the rope holder and installed along the inner circumferential surface of the rope holder so as to surround the rope;
A hydraulic pump installed at an upper portion of the floating body to supply or discharge the hydraulic pressure to the air tube under the control of the controller;
A hydraulic line connected to the hydraulic pump and the air tube through a hole formed in the rope holder to provide a passage through which the hydraulic pressure moves;
The rope holder includes:
A coupling piece protruding outwardly from both sides along the longitudinal direction so as to be detachably connectable to the floating body and having at least one screw hole; And
A coupling bolt detachably coupled to a screw hole formed in the coupling piece and a fixing hole formed in the floating body in correspondence with the screw hole;
Wherein the air tube is manufactured using synthetic resin. The apparatus of claim 1, wherein the air tube is made of synthetic resin.


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