KR20060014191A - Anti-rolling system for ship - Google Patents

Abstract

The present invention relates to an apparatus for reducing lateral fluctuation for a ship, comprising: at least one support guide disposed laterally in an area of the vessel, and at least reciprocating along the support guide in an inverse phase with respect to the lateral fluctuation of the vessel; An abatement device body having one movable mass and at least one pair of springs for elastically pressing the movable mass in the moving direction on both sides of the movable mass; And a detachable means for detachably fixing the body of the abatement device to the vessel.

This makes it simple to structure, manufacture and install, easy to maintain, requires no operating power, and minimizes the space occupied by the ship while reducing the ship's lateral fluctuations, which can variably respond to the expectations of ship size and lateral fluctuations. An apparatus is provided.

 Vessel, roll, mass, antiphase, spring

Description

Rolling Reduction Device for Ships {Anti-Rolling System for Ship}

1 is a perspective view of a side roll reduction device for ships according to an embodiment of the present invention,

Figure 2 is an exploded perspective view of the lateral shake reduction device for ships of Figure 1,

3 is a cross-sectional view of the coupled state of the lateral shake reduction device for ships according to line III-III of FIG.

4 is a cross-sectional view of the coupled state of the lateral shake reduction device for ships according to line IV-IV of FIG.

5 is a perspective view of the state of use of the apparatus for reducing the horizontal lateral shake of Figures 1 to 4,

6 to 8 is a cross-sectional view showing a lateral shake reduction action of the lateral shake reduction device for ships of FIG.

Figure 9 is a perspective view of the sideways shaking device for ships according to another embodiment of the present invention,

* Explanation of symbols for the main parts of the drawings

 3: reduction device main body 5: detachable means

10: housing 20: support guide

21: support plate 23: support bushing

25: guide rod 30: movable mass

40: spring 50: cloud movement means

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lateral sway reduction device for ships, and more particularly, to a lateral sway reduction device for ships that reduces lateral fluctuations of a ship by using a change in position of a movable mass.

Ships at sea are inevitably swayed by waves. Such riots not only burden passengers and crews with discomfort and fatigue, but also cause dangerous situations such as overturning of loaded cargo.

In particular, when the fluctuation of the wave caused by the deterioration of the weather condition increases, a large accident such as the overturning of the ship or the breakage of the hull due to the collision between the anchored ships is caused by the corresponding lateral fluctuation.

Therefore, various ships are equipped with various types of lateral fluctuation reducing device according to the characteristics of the vessel. Representative lateral fluctuation reducing devices include bilge keel and pins, which are formed of keel-type protrusions on the bent portion of the hull. Fin Stabilizer to generate the opposite force to the lateral movement of the hull by adjusting the angle of the ship, and ART (Anti-Rolling Tank) to form the U-shaped tank inside the hull to suppress the lateral fluctuation. You can count.

By the way, these bilskill or pin ballasts and ART devices are considered from the design stage of the vessel and are integrally installed on the hull while maintaining the precision until the ship is completed, the production and installation is very difficult, installation After the maintenance and management is very difficult, there was a problem to use excessive power.

In addition, there is a problem in that the installation cost is formed expensive due to its structural characteristics, the burden of the ship production cost is increased.

In particular, ART takes up a lot of space of the hull unnecessarily, the difficulty of its installation and maintenance, and the manufacturing cost is also very expensive.

In addition, since the structure and the specification of the conventional lateral fluctuation reduction device is limited to the size of the vessel from the design stage, there was a fatal problem that can not cope with this if the scale of the vessel is changed according to the design change.

Accordingly, the object of the present invention is to simplify the structure, fabrication and installation, convenient maintenance, no need of operating power supply, and to respond variably to the vessel's scale and lateral fluctuation expectation while minimizing the space occupancy of the hull. It is to provide a side roll reduction device for ships.

According to the present invention, in the ship lateral fluctuation reducing device, at least one support guide disposed in the transverse direction in one area of the ship, and along the support guide in a reverse phase with respect to the lateral fluctuation of the ship An abatement device body having at least one movable mass reciprocating and at least a pair of springs elastically pressing the movable mass in the moving direction on both sides of the movable mass; It is achieved by a lateral fluctuation reducing device for a ship, characterized in that it has a detachable means for detachably fixing the body to the vessel.

Here, the spring has a spring rigidity that the reciprocating cycle of the movable mass generated in the reverse phase with respect to the lateral oscillation intrinsic cycle of the vessel can be coincided, and is preferably installed in a shape wound on the support guide.

In addition, the abatement device body includes a housing defining a receiving space of the support guide, the movable mass and the spring, and the detachable means is effectively provided at the lower portion of the housing.

Further, it is more preferable that the abatement apparatus body includes rolling means for rolling guide the reciprocating movement of the movable mass.

In this case, the rolling means has a guide rail provided in the longitudinal direction on the plate surface of the housing adjacent to the moving region of the movable mass, and a roller which is freely rotatably coupled to the movable mass to make a rolling contact with the guide rail. Is effective.

On the other hand, the detachable means is preferably provided on both sides of the lower portion of the abatement device body to separate the vessel and the abatement device body, and the adsorber is installed under the adsorber frame is adsorbed on the plate surface of the vessel. .

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

1 is a perspective view of a lateral sway reduction device for ships according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the lateral sway reduction device for ships of Figure 1, Figure 3 is a sideways reduction for ships according to line III-III of FIG. 4 is a cross-sectional view of the coupling state of the apparatus, and FIG. 4 is a cross-sectional view of the coupling state of the lateral shake reduction device for ships according to line IV-IV of FIG. As shown in these figures, the lateral fluctuation reduction device 1 for ships according to the present invention includes a reduction device main body 3 for reducing the lateral fluctuations of the hull and a reduction device main body 3 in the transverse direction in one region of the hull. It has a reduction device detachment means (5) for detachably coupling.

The abatement device body 3 includes a housing 10 which is installed in one side of the hull in the transverse direction, at least one support guide 20 which is installed in the transverse direction of the hull inside the housing 10, and transverse shaking of the ship. At least one movable mass 30 reciprocating along the support guide 20 and at least one pair of springs 40 for elastically pressing the movable mass 30 in the moving direction on both sides of the movable mass 30. And rolling means 50 for guiding the reciprocating movement of the movable mass 30.

The housing 10 has a lower plate 11 having a predetermined length and an upper cover 13 surrounding the upper region of the lower plate 11, and the lower plate 11 and the upper cover 13 are coupled to each other. It forms a space in which parts such as the support guide 20 and the movable mass 30 can be installed. The housing 10 is installed in the transverse direction in one area of the ship by the detachable means 5.

The support guide 20 is a pair of guide support plates 21 which are erected in the width direction on both sides in the longitudinal direction of the lower plate 11, and guide support bushings 23 which are installed to be opposite to both guide support plates 21. And guide rods 25 having both ends inserted into and coupled to the guide support bushings 23 provided on the guide guide plates 21, respectively, to support the movable masses 30 in both longitudinal directions. At this time, between the guide rod 25 and the guide support bushing 23, it is preferable that a spring insertion interval 27 is formed so that one end of the spring 40 can be inserted.

Here, the guide rods 25 may be provided as one according to the size of the movable mass 30, it may be provided in plurality as shown in the figure may be spaced apart in parallel to each other in the width direction of the lower plate (11). In addition, the guide rod 25 may be detachably directly coupled to both guide support plates 21 without using the guide support bushing 23.

The movable mass 30 is made of a metal mass so as to have a weight capable of suppressing lateral fluctuation of the ship and is coupled to the guide rod 25 so as to be relatively movable. To this end, a guide through hole 31 corresponding to the guide rod 25 is formed in the movable mass 30. At this time, the first insertion portion of the guide passage hole 31 is preferably formed between the inner diameter surface and the guide rod 25, the spring insertion interval 27 to the extent that the other end of the spring 40 can be inserted.

Here, the weight of the movable mass 30 can be varied according to the scale of the ship and the expected anti-rolling force. For example, the weight of the movable mass 30 is increased when the lateral fluctuation reducing device 1, which is already manufactured in a standard capable of responding to the lateral fluctuation expectation of a relatively small vessel, is applied to a relatively large scale vessel. It is to be able to cope with the lateral fluctuation of the vessel.

This can be implemented by forming a structure for coupling the other movable mass 30 'by using the bolt fastening structure (b) to the already installed movable mass 30, as shown in FIG.

The springs 40 are provided in pairs so as to surround the guide rods 25 on both sides of the guide rods 25 with the movable masses 30 interposed therebetween, and are installed to elastically press the movable masses 30 in the moving direction. . At this time, each spring 40 is a spring insertion interval 27 between the guide rod 25 and the guide support bushing 23 and the first insertion portion of the guide passage hole 31 at both ends in a compressed state, respectively. Inserted into the insertion gap 27 to pressurize the movable mass (30).

Here, the rigidity of the spring 40 is determined so that the reciprocating cycle (the inherent cycle of the reduction device) of the movable mass 30 generated in the reverse phase with respect to the lateral oscillation intrinsic cycle of the ship can match the operation of the same weight In the mass 30, the effect of reducing the lateral fluctuation of the ship can be maximized.

The spring 40 can be easily replaced by separating the guide support bushing 23 and the guide rod 25 by providing a spring 40 corresponding to the designed value when the lateral fluctuation intrinsic period of the vessel is different from the designed value. .

The rolling means 50 is a guide rail 51 installed in the longitudinal direction on the lower plate 11 and a roller which is freely rotatable in the lower portion of the movable mass 30 to be in contact with the guide rail 51. It consists of (53). The rolling means 50 is for smoothly reciprocating the movable mass 30, the structure can be variously changed. For example, the mounting position of the guide rail 51 and the roller 53 is reversed, or the roller (in the longitudinal direction on the lower surface of the movable mass 30 or the upper plate 11 without providing the guide rail 51) is provided in the longitudinal direction. 53) can also be installed.

On the other hand, the detachable means (5) consists of an adsorber frame (60) coupled to the lower part of the lower plate (11) to separate the hull and the abatement device body (3), and an adsorber (70) installed under the adsorber frame (60). The adsorber 70 includes an adsorption plate 71 positioned below the adsorber frame 60 and an adsorption pump 73 installed inside the adsorber frame 60 to adsorb and actuate the adsorption plate 71. The attachment and detachment means 5 are provided at both sides in the longitudinal direction of the lower plate 11 of the abatement device body 3, and the adsorption plate 71 is adsorbed to the plate surface of the hull by using the adsorption pump 73. 3) can be firmly fixed to the ship.

Here, the detachable means (5) can be configured in various structures, such as detachable coupling to the vessel using a bolt, nut, etc. in addition to the configuration of the adsorber frame 60 and the adsorber 70. have.

By this configuration, the process of reducing the lateral fluctuation of the ship using the lateral fluctuation reduction device 1 for ships according to this invention is examined.

First, as shown in FIG. 5, the abatement apparatus main body 3 is attached to one area | region of the said ship using the attachment / detachment means 5 in the horizontal direction of a ship body. At this time, the movable mass 30 is positioned corresponding to the center of the ship in the state of no shaking of the ship, as shown in Figs.

When lateral fluctuations of the ship are caused by waves during operation and anchorage of the ship in the state where the installation of the abatement device 3 is completed, as shown in FIGS. 7 and 8, the movable mass 30 is intrinsic to the lateral fluctuation of the ship. A reciprocating cycle occurs in reverse phase with respect to the cycle to reciprocate along the guide rod 25.

That is, when the ship is inclined in the same direction as in FIGS. 7 and 8 due to lateral shaking, the movable mass 30 moves along the guide rod 25 to the side opposite to the inclination direction of the ship due to the antiphase. . Then, as indicated by the arrow in the direction opposite to the inclination direction of the ship by the weight of the movable mass 30, a load is applied to minimize the inclination of the ship, thereby reducing the lateral fluctuation of the ship.

At this time, the movement of the movable mass 30 is made smoothly by the repulsive force and the rolling means 50 of the spring 40 is compressed.

On the other hand, in order to increase the effect of reducing the lateral fluctuation of the ship, as shown in Figure 9, the movable mass 30 is coupled to another movable mass 30 'to increase the weight, or other heavy mass ( If not replaced, it is possible to simply increase the effect of reducing the lateral disturbance. At this time, the size of the upper cover 13 is also changed.

As described above, the apparatus for reducing lateral fluctuation of the ship according to the present invention is manufactured separately from the ship and can be easily detached and detached to the hull using a detachable means, and does not occupy much space of the hull. , Maintenance is very convenient.

In addition, since the motion of the movable mass is used without using power, an operating power source is not necessary.

In addition, it can be used for various vessels and can respond variably to the vessel's scale and anticipation of lateral fluctuation.

As described above, according to the present invention, the structure, fabrication and installation are simple, convenient maintenance, no operation power source, and minimize the space occupancy of the hull, while varying to the size of the ship and the anticipation of lateral fluctuations There is provided an apparatus for reducing lateral fluctuations for ships.

Claims (6)

In the side roll reduction device for ships, At least one support guide disposed transversely to one region of the vessel, at least one movable mass reciprocating along the support guide in an inverse phase with respect to the transverse oscillation of the vessel, and on both sides of the movable mass An abatement device body having at least one pair of springs for elastically pressing the movable mass in the moving direction; And a detachable means for detachably fixing the body to the vessel. The method of claim 1, The spring has a spring stiffness that the reciprocating movement cycle of the movable mass generated in the reverse phase with respect to the natural cycle of the lateral oscillation of the ship can match, and is installed in a shape wound on the support guide Agitation Reduction Device. The method of claim 1, The abatement device main body includes a housing forming a receiving space of the support guide, the movable mass and the spring, the detachable means is a ship horizontal displacement reduction device characterized in that provided in the lower portion of the housing. The method according to any one of claims 1 to 3, The abatement device body of the ship, characterized in that it comprises a rolling means for rolling guide the reciprocating movement of the movable mass. The method of claim 4, wherein The rolling means has a guide rail provided in the longitudinal direction on the plate surface of the housing adjacent to the moving region of the movable mass, and a roller which is freely rotatably coupled to the movable mass to make a rolling contact with the guide rail. Lateral shake reduction device for ships. The method according to claim 1 or 3, The detachable means is provided on both sides of the lower portion of the abatement device body, the adsorber frame spaced apart from the vessel and the abatement device body, and an adsorber installed under the adsorber frame and adsorbed on the plate surface of the vessel, characterized in that Rolling Reduction Device.

Images