JP2567842Y2 - Ice chip surfacing promotion device for ice sea vessels - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for accelerating the floating of ice pieces used for an ice sea vessel navigating in an ice sea area.

[0002]

2. Description of the Related Art In a conventional ice sea vessel, FIGS.
As shown in (a), the bilge portion 2a of the hull 1 at the center portion of the hull 1 extends from the bow to the stern of the hull 1 at about 1 / of the master's length.
Bilge keel 3 having a length of 3 and a flat plate of appropriate width
Are projected so as to make a business trip in a right angle direction and are immersed in the seawater 4 so as to reduce the sway of the ship that occurs when the ship navigates.

[0003]

However, since the bilge keel 3 of the above-mentioned conventional ice-sea vessel has an overhanging plate, the hull 1 as shown in FIG. When the ice pieces 5 sunk into the bilge part 2a are going to float up in the direction of the ship along the bottom of the ship, the bilge keel 3 prevents the ice pieces 5 from floating. May accumulate. The ice pieces 5 collected on the lower side of the bilge keel 3 continue to flow toward the stern along the lower surface of the bilge keel 3 and flow into the propeller section, which is the propulsion section of the hull 1, and interfere with the propeller wings to form the propeller wings. If the ice pieces 5 are clogged between the propeller wings and the hull 1, the ice torque is increased to cause damage to the shaft, bearings, reduction gears and main engine of the hull 1. , Etc.

Therefore, the present invention provides a bilge part 2a of a hull 1.
It is intended to allow the ice pieces 5 sunk into the bilge portion 2a to be smoothly discharged to the ship side without deteriorating the effect of lowering the bilge keel 3 attached to the bilge keel 3.

[0005]

According to the present invention, in order to solve the above-mentioned problems, a bilge keel attached to a bilge part of a hull from a bow part to a stern part is provided between a bulge part and a protruding tip side part. A guide plate arranged so as to be on the extension of the inclined surface of the ship bottom is attached over the entire length in the longitudinal direction of the bilge keel, and the guide plate is provided with a number of holes having a size that allows seawater to pass but does not allow ice chips to pass. I do.

[0006]

[Function] By blocking the overhanging tip side of the bilge keel and the bilge part with a perforated guide plate attached along the bottom of the ship, the ice chips that are going to rise toward the ship along the bottom of the ship are below the bilge keel. The guide plate allows the air to be smoothly lifted in the direction of the ship and discharged without entering the side.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the present invention. Similar to the conventional case shown in FIGS. 3 and 4, a bilge portion 2a of a hull 1 of an ice-sea vessel has a hull-side outer plate 2 attached thereto. In the configuration in which the bilge keel 3 is attached, a hole 6a of an appropriate size that allows the passage of the seawater 4 and the like but does not allow the ice pieces 5 to pass is provided between the overhanging tip side 3a of the bilge keel 3 and the bilge portion 2a. The bilge keel 3 and the bilge portion 2a are arranged so that the guide plate 6 is on an extension of the bottom of the ship.
And a perforated guide plate 6 is attached to the lower side of the bilge keel 3 over the entire length in the longitudinal direction.

Now, when an ice-sea vessel sails in the ice-sea area, the ice pieces 5 that have entered the vicinity of the bottom centerline of the ship attempt to float to the ship side along the inclined surface of the bottom of the ship, but the ice pieces 5 are below the bilge keel 3. Since the guide plate 6 provided with a hole 6a of a size that cannot pass through 5 is provided on the entire surface, the ice pieces 5 do not accumulate under the bilge keel 3 unlike a conventional ice sea vessel,
The air can be discharged by smoothly floating and moving toward the ship along the guide plate 6. At this time, since the seawater 4 freely enters and exits the lower surface side of the bilge keel 3 by the hole 6a of the guide plate 6, the bilge keel 3 does not lose its swinging effect.

It should be noted that the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the scope of the present invention.

[0011]

[Effect of the Invention] As described above, according to the ice piece floating promotion device for an ice-sea vessel of the present invention, the bilge keel attached to the bilge part of the hull from the bow to the stern has the overhanging tip side and the bilge part. Along the length of the bilge keel, a guide plate is installed over the entire length of the bilge keel, and a number of holes are provided in the guide plate, the size of which allows seawater to pass through but not ice chips. With this configuration, the ice chips floating on the lower surface of the bilge keel can be smoothly moved along the guide plate toward the ship side and discharged without damaging the bilge keel's anti-rolling effect. It is possible to eliminate the ice pieces flowing into the propeller section of the propeller and prevent the damage caused by the interference between the propeller wings and the ice pieces, thereby protecting the propeller wings, the shaft system and the main engine. Effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing an embodiment of an ice piece floating acceleration device for an ice-sea vessel according to the present invention.

FIG. 2 is a plan view showing an outline of the guide plate of FIG. 1;

FIG. 3 is a side view of a ship having a bilge keel mounted on a ship side outer plate.

FIG. 4 shows a state in which a bilge keel is attached to a bilge part of a conventional ice-sea vessel, wherein (a) is a cross-sectional view showing a state at the time of normal marine navigation, and (b) is a voyage in an ice-sea area. It is a sectional view showing the state where ice pieces sometimes accumulate below the bilge keel.

[Explanation of symbols]

 Reference Signs List 1 hull 2 hull outer panel 2a bilge part 3 bilge keel 3a bulge keel overhanging tip side 4 seawater 5 ice chips 6 guide plate 6a hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A guide plate disposed between a bilge part and a projecting tip side of a bilge keel attached to a bilge part of a hull from a bow part to a stern part so as to be on an extension of an inclined surface of a ship bottom. An ice piece floating acceleration device for an ice-sea vessel, comprising: a plurality of holes that are attached to the entire length of the bilge keel in the longitudinal direction, and are provided with a number of holes through the guide plate that allow seawater to pass but not ice pieces.