KR20180020260A - Key arrangement structure of ship - Google Patents

Key arrangement structure of ship Download PDF

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Publication number
KR20180020260A
KR20180020260A KR1020187002050A KR20187002050A KR20180020260A KR 20180020260 A KR20180020260 A KR 20180020260A KR 1020187002050 A KR1020187002050 A KR 1020187002050A KR 20187002050 A KR20187002050 A KR 20187002050A KR 20180020260 A KR20180020260 A KR 20180020260A
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South Korea
Prior art keywords
propeller
key
keys
ship
arrangement structure
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KR1020187002050A
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Korean (ko)
Inventor
지안강 시
겐이치 시바타
히로시 하라다
료 후지이
아키히로 가나이
Original Assignee
츠네이시 조센 가부시키가이샤
유겐가이샤 에이씨티
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Publication of KR20180020260A publication Critical patent/KR20180020260A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H2025/066—Arrangements of two or more rudders; Steering gear therefor

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Toys (AREA)

Abstract

The present invention provides a key arrangement structure for a ship capable of shortening a cord length of a key to facilitate stern arrangement and capable of achieving both maneuverability and propulsion performance.
A key arrangement structure of a ship having one propeller and a plurality of keys, wherein the rotary shafts of the plurality of keys are provided asymmetrically in the propeller surface of the propeller so that the plurality of keys are arranged asymmetrically in the propeller surface of the propeller. In a ship having one propeller 1 and two keys 10 and 11, the rotational axis A 10 of one of the two keys 10 is installed at the center in the propeller plane 3, The rotational axis A 11 of one key 11 is provided on the side on which the propeller 1 descends (on the starboard S side) when the propeller surface 3 rotates.

Description

Key arrangement structure of ship

The present invention relates to a key arrangement structure of a ship.

8, a propeller 1 attached to a propeller shaft 2 and a key 100 attached to a rudder horn 4 are disposed at a stern portion of a ship 5 of a ship , The key 100 is rotated around the rotation axis A. The code length of the key 100b in FIG. 8A is greater than the code length L 1 of the key 100a shown in FIG. 8A, 2 ) is short. The propeller 1 of Fig. 8B is located behind the propeller 1 of Fig. 8A by the amount corresponding to the shorter cord length.

On the other hand, with respect to the arrangement of the propeller and the key, in the case of a ship having one propeller and one key, as shown in Fig. 9, on the ship's center line C behind the propeller 1 The key 100 is disposed. FIG. 9A is a view of the arrangement of the propeller and the key from the rear of the hull, and FIG. 9B is a view of the arrangement of the propeller and the key viewed from above the hull. Reference numeral 3 denotes a propeller surface drawn by the propeller 1 during rotation, and arrows around the propeller surface 3 indicate a rotation direction of the propeller 1. In addition, the symbol P indicates the port direction, and the symbol S indicates the star direction.

10, in the ship having one propeller and two keys, the center line C of the ship behind the propeller 1 (the extension line of the propeller shaft 2) The keys 101 and 102 are arranged at a distance equal to the equidistance (D 101 = D 102 ) toward the positive side. FIG. 10A is a view of the arrangement of the propeller and the key from the rear of the hull, and FIG. 10B is a view of the arrangement of the propeller and the key viewed from above the hull. Reference numeral 3 denotes a propeller surface drawn by the propeller 1 during rotation, and arrows around the propeller surface 3 indicate a rotation direction of the propeller 1. In addition, the symbol P indicates the port direction, and the symbol S indicates the star direction. Therefore, the keys 101 and 102 are arranged symmetrically in the propeller face 3 of the propeller 1.

Regarding the arrangement of the propeller and the key, Patent Document 1 and Patent Document 2 disclose an invention in which keys are arranged on the positive and negative sides of the hull, separately from one key disposed on the center line of the hull behind the propeller .

Patent Document 3 discloses an invention in which twisting is formed on the right and left keys to make the shape of the key itself asymmetric so as to improve the propulsion performance by reducing the resistance due to the wake of the propeller touching the key.

Patent Document 1: Japanese Utility Model Publication No. 4-1098 Patent Document 2: Japanese Utility Model Publication No. 61-171691 Patent Document 3: JP-A-2010-95239

However, if the overall length of the ship is limited due to port restrictions or the like, it is difficult to arrange the propeller or the key, and if the stern gravity is increased due to the increase in the size of the hull type or the main machine, performance deteriorates, There is a problem that this is difficult.

On the other hand, as shown in Fig. 8B, if the code length of the key can be shortened, the stern arrangement can be facilitated and the stern gravity can be reduced. On the contrary, the efficiency of the key deteriorates and the steering performance deteriorates.

On the other hand, it is conceivable to improve the steering performance by increasing the number of keys, such as the keys 101 and 102 shown in Fig. 10 and the keys added to the ship front and rear sides shown in Patent Documents 1 and 2. However, The increase in the number of keys leads to deterioration of propulsion performance.

The invention described in Patent Document 3 is for the purpose of improving the propulsion performance by making the shape of the right and left keys themselves asymmetrical, and does not aim at improving the steering performance.

An object of the present invention is to provide a key arrangement structure for a ship capable of shortening a cord length of a key and facilitating a stern arrangement while simultaneously achieving both steering performance and propelling performance.

In order to solve the above problems, a key arrangement structure of a ship according to the present invention is a key arrangement structure of a ship having a propeller and a plurality of keys, wherein the rotary shafts of the plurality of keys are installed asymmetrically in the propeller surface of the propeller And the plurality of keys are arranged asymmetrically in the propeller surface of the propeller.

In addition, " the rotational axis of the key is disposed in the propeller plane " means that when the position of the rotational axis of the key in the lateral direction (position in the width direction of the hull) is viewed from the rear of the hull, Quot; is included in the range. The " installation of the rotary shaft of the key asymmetrically " means that when the position of the rotary shaft of the key in the lateral direction (position in the widthwise direction of the hull) is viewed from the rear of the hull, Is not symmetrical with respect to the axis of rotation.

Likewise, " placing the key in the propeller plane " means that when the position of the key in the lateral direction (position in the hull width direction) is viewed from the rear of the hull, the propeller is included in the range of the propeller plane drawn in the left- It says. The " arranging the keys asymmetrically " means that when the position of the key in the lateral direction (the position in the width direction of the hull) is viewed from the rear of the hull, the positions of the left and right keys with respect to the center of the propeller face are symmetrical .

Preferably, the rotary shaft of one of the plurality of keys is provided at the center of the propeller surface.

Preferably, a rotary shaft of a key other than a key provided with a rotary shaft at the center of the propeller surface among the plurality of keys is provided on either side of the propeller surface.

Preferably, a rotary shaft of a key other than a key provided with a rotary shaft at the center of the propeller surface among the plurality of keys is provided on a side where the propeller descends at the time of rotation within the propeller surface.

Preferably, the rotary shaft of one of the plurality of keys is provided on either side of the propeller surface at an interval from the center, and the rotary shaft of the remaining one of the plurality of keys is provided on the opposite side of the propeller surface from the center And is installed at a larger spacing.

Preferably, the plurality of keys are two.

According to the present invention, in the key arrangement structure of a ship having a single propeller and a plurality of keys, the rotary shafts of the plurality of keys are provided asymmetrically in the propeller surface of the propeller so that a plurality of keys are provided in the propeller surface of the propeller It is possible to obtain a rectifying effect of the wake of the propeller by the propeller rotating in one direction. Therefore, when the code length of the key is shortened to facilitate the stern arrangement, the steering performance is improved over one key and the propulsion performance is not lowered more than if the plurality of keys are arranged symmetrically. Further, since the cord length of the key can be shortened, the stern arrangement can be facilitated, and an elongated linear shape with a small resistance can be designed. Therefore, the propulsion performance of the hull itself can be improved.

In the case where the rotary shaft of one of the plurality of keys is provided at the center in the propeller plane, one of the plurality of keys may be disposed at the center in the propeller plane to further improve the performance of the key disposed at the center .

When a rotary shaft of a key other than a key provided with a rotary shaft at the center of the propeller surface is provided on either side of the propeller surface, a plurality of keys can be easily arranged asymmetrically.

In the case where the rotary shaft of the key other than the key provided with the rotary shaft at the center in the propeller plane is provided on the side where the propeller descends at the time of rotation in the propeller plane among the plurality of keys, The rectifying effect can be enhanced, and both the steering performance and the propulsion performance can be made compatible at a high level.

The rotary shaft of one of the plurality of keys may be provided on either side of the propeller surface at a distance from the center and the rotary shafts of the remaining ones of the plurality of keys may be provided on the opposite side of the propeller surface , It is possible to easily arrange the plurality of keys asymmetrically even when the key is not disposed at the center.

In the case where the plurality of keys are two, since the number of keys is small, the structure can be arranged asymmetrically without increasing the complexity.

As described above, according to the present invention, it is possible to provide a key arrangement structure for a ship capable of shortening a cord length of a key to facilitate the arrangement of aft stern, while simultaneously achieving both maneuvering performance and propelling performance.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing a key arrangement structure of a ship according to Embodiment 1 of the present invention. FIG.
2 is a view showing a key arrangement structure of a ship according to the second embodiment.
3 is a view showing a key arrangement structure of a ship according to the third embodiment.
4 is a view showing a key arrangement structure of a ship according to the fourth embodiment.
5 is a view showing a key arrangement structure of a ship according to Embodiment 5. Fig.
6 is a view showing a key arrangement structure of a ship according to a sixth embodiment.
7 is a view showing a key arrangement structure of a ship in the embodiment and the comparative example.
8 is a side view showing the stern portion of the ship.
9 is a view showing a key arrangement structure of a ship related to the conventional example.
10 is a view showing a key arrangement structure of a ship related to the conventional example.

Next, a key arrangement structure of a ship according to an embodiment of the present invention will be described with reference to Figs. 1 to 6. Fig. First, matters common to the following first to sixth embodiments will be described.

The following embodiments relate to the arrangement structure of the propeller 1 and the key 100 disposed on the stern portion of the ship 5 of the ship shown in Fig. By using the key 100b having a shorter code length as shown in FIG. 8B for the key 100a having a longer code length as shown in FIG. 8A, the stern arrangement can be facilitated and the steering performance and the propelling performance can be made compatible will be. In Fig. 8, only one key is described. In the following embodiments, a plurality of keys are arranged for one propeller.

In each of Figs. 1 to 6, a is a view of the arrangement of the propeller and the key from the rear of the hull, and b is a view of the arrangement of the propeller and the key from above the hull. Reference numeral 3 denotes a propeller surface drawn by the propeller 1 during rotation, and arrows around the propeller surface 3 indicate a rotation direction of the propeller 1. In addition, the symbol P indicates the port direction, and the symbol S indicates the star direction. Symbol A indicates the rotation axis of each key. The position in the left-right direction (the position in the hull width direction) of each key is determined depending on where the rotary shaft A is installed in the left-right direction.

It is to be understood that each of the figures is intended to illustrate the position in which the key is disposed, and the key is formed in a rectangular shape for the sake of simplicity. However, it is needless to say that the key may be formed in a streamlined shape. In the present embodiment, it is assumed that a plurality of keys are made to have the same shape and size and move in conjunction with each other.

1 is a view showing a key arrangement structure of a ship according to a first embodiment. At the rear of the propeller 1, two keys 10, 11 are arranged. The keys 10 and 11 are attached to the rudder horns 4 and 4 so as to rotate around the rotational axes A 10 and A 11 , respectively. Two rotating shafts (10 A, 11 A) are all, in the left-right direction [port (P) direction and starboard (S) direction], is provided in the propeller plane (3) of the propeller (1). Of the two rotary shafts A 10 and A 11 , one rotary shaft A 10 is provided in the middle of the propeller surface 3 in the lateral direction (on the ship body center line C behind the propeller 1). The other rotary shaft A 11 is provided on the right side (starboard side S) of the propeller face 3 with a gap D 11 between the rotary shaft A 10 and the rotary shaft A 10 . The two rotary shafts A 10 and A 11 are provided asymmetrically in the propeller surface 3. As is clear from the rotating direction of the propeller 1, the starboard S side on which the rotating shaft A 11 is provided is a side on which the propeller 1 descends upon rotation of the propeller 1.

Thus, the keys 10 and 11 are arranged asymmetrically in the propeller face 3 by providing the two rotation axes A 10 and A 11 in the propeller face 3 asymmetrically.

2 is a view showing a key arrangement structure of a ship according to the second embodiment. Two keys (20, 21) are arranged behind the propeller (1). The keys 20 and 21 are attached to the rudder horns 4 and 4 so as to rotate about the rotational axes A 20 and A 21 , respectively. All of the two rotary shafts A 20 and A 21 are provided in the propeller surface 3 of the propeller 1 in the left and right directions (the port P direction and the starboard S direction). Of the two rotary shafts A 20 and A 21 , one rotary shaft A 20 is provided in the middle of the propeller surface 3 in the horizontal direction (on the ship body center line C behind the propeller 1). The other rotary shaft A 21 is provided on the right side (starboard side S) of the propeller face 3 with a gap D 21 between the rotary shaft A 20 and the rotary shaft A 20 . The two rotary shafts A 20 and A 21 are provided asymmetrically in the propeller surface 3. As is apparent from the rotating direction of the propeller 1, the starboard S side on which the rotating shaft A 21 is provided is a side on which the propeller 1 descends when the propeller 1 rotates. The rotating shaft A 21 in the second embodiment is disposed offset toward the starboard S side from the rotating shaft A 11 in the first embodiment (D 11 <D 21 ).

Thus, the keys 20 and 21 are arranged asymmetrically in the propeller face 3 by providing the two rotation axes A 20 and A 21 in the propeller face 3 asymmetrically.

3 is a view showing a key arrangement structure of a ship according to the third embodiment. Three keys (30, 31, 32) are arranged behind the propeller (1). The keys 30, 31 and 32 are attached to the rudder horns 4, 4 and 4 so as to rotate around the rotational axes A 30 , A 31 and A 32 , respectively. The three rotary shafts A 30 , A 31 and A 32 are all provided in the propeller surface 3 of the propeller 1 in the left and right directions (the port P direction and the starboard S direction). Of the three rotary shafts A 30 , A 31 and A 32 , one rotary axis A 30 is provided in the middle of the propeller surface 3 in the lateral direction (on the ship's center line C behind the propeller 1) have. And, one rotation axis (A 31) of the other is, is provided at a distance (D 31) between itself and the right side [starboard (S) side] in the propeller plane (3), the rotation axis (A 30). The other rotary shaft A 32 is provided on the right side (starboard side S) side of the propeller surface 3 with a gap D 32 between the rotary shaft A 30 and the rotary shaft A 30 . The three rotary shafts A 30 , A 31 and A 32 are installed asymmetrically in the propeller face 3. As is clear from the rotational direction of the propeller 1, the starboard S side on which the rotating shafts A 31 and A 32 are provided is the one on which the propeller 1 descends during rotation of the propeller 1.

In this way, it is arranged in three axis of rotation (A 30, A 31, A 32) to the propeller plane (3) by providing in the left-right asymmetry in the quay (30, 31, 32) is left in the propeller side 3 asymmetric .

4 is a view showing a key arrangement structure of a ship according to the fourth embodiment. Three keys (40, 41, 42) are arranged behind the propeller (1). The keys 40, 41 and 42 are attached to the rudder horns 4, 4 and 4 so as to rotate around the rotational axes A 40 , A 41 and A 42 , respectively. All three rotary shafts A 40 , A 41 and A 42 are provided in the propeller surface 3 of the propeller 1 in the left-right direction (the P direction and the S direction). Of the three keys, one rotary axis A 40 is provided in the middle of the propeller face 3 in the lateral direction (on the ship's center line C behind the propeller 1). And, one rotation axis (A 41) of the other is, is provided at a distance (D 41) between itself and the right side [starboard (S) side] in the propeller plane (3), the rotation axis (A 40). The other rotary shaft A 42 is provided on the left side (on the left side P side) in the propeller face 3 with a gap D 42 between the rotary shaft A 40 and the rotary shaft A 40 . The spacing D 41> distance D 42, three of the rotational axis (A 40, A 41, A 42) is fitted in the left-right asymmetry in the propeller plane (3).

The keys 40, 41 and 42 are arranged asymmetrically in the propeller face 3 by providing the three rotational shafts A 40 , A 41 and A 42 in the propeller face 3 asymmetrically .

5 is a view showing a key arrangement structure of a ship according to Embodiment 5. Fig. At the rear of the propeller 1, two keys 51 and 52 are arranged. The keys 51 and 52 are attached to the rudder horns 4 and 4 so as to rotate about the rotational shafts A 51 and A 52 , respectively. The two rotary shafts A 51 and A 52 are all provided in the propeller surface 3 of the propeller 1 in the left and right directions (the port P direction and the starboard S direction). In the fifth embodiment, the rotational axis is not provided at the center of the propeller surface 3 in the lateral direction (on the ship's center line C behind the propeller 1). Of the two rotary shafts A 51 and A 52 , one rotary shaft A 51 is located on the right side (starboard side S) of the propeller surface 3, And the center line (C)] with an interval D 51 therebetween. The other rotary axis A 52 is spaced apart from the left side (on the port side P side) in the propeller face 3 and the center in the lateral direction (on the ship's center line C on the rear side of the propeller 1) (D 52 ). The interval D 51 > the interval D 52 , and the two rotation axes A 51 and A 52 are provided asymmetrically in the propeller face 3. That is, the rotary shaft A 51 is provided on the propeller face 3 on the side opposite to the rotary shaft A 52 with a greater distance from the center. It is also possible to provide the interval D 51 <the interval D 52 with the interval between the left and right sides reversed.

As described above, the two rotation shafts A 51 and A 52 are provided asymmetrically in the propeller face 3 so that the keys 51 and 52 are arranged asymmetrically in the propeller face 3.

6 is a view showing a key arrangement structure of a ship according to a sixth embodiment. Two keys (60, 61) are arranged behind the propeller (1). The keys 60 and 61 are attached to the rudder horns 4 and 4 so as to rotate about the rotational shafts A 60 and A 61 , respectively. All of the two rotary shafts A 60 and A 61 are provided in the propeller surface 3 of the propeller 1 in the left and right directions (the port P direction and the starboard S direction). Of the two rotary shafts A 60 and A 61 , one rotary shaft A 60 is provided in the middle of the propeller surface 3 in the lateral direction (on the ship body center line C behind the propeller 1). The other rotary shaft A 61 is provided on the left side (on the left side P side) in the propeller face 3 with a gap D 61 between it and the rotary shaft A 60 . The two rotary shafts A 60 and A 61 are provided asymmetrically in the propeller face 3. As is clear from the rotational direction of the propeller 1, the side of the port P on which the rotational axis A 61 is provided is a side on which the propeller 1 rises when the propeller 1 rotates.

As described above, by providing the two rotary shafts A 60 and A 61 asymmetrically in the propeller face 3, the keys 60 and 61 are arranged asymmetrically in the propeller face 3.

Next, the operation and effect in the above embodiment will be described. Embodiments 1 to 6 are a key arrangement structure of a ship having a single propeller 1 and a plurality of keys, in which the rotary shafts of a plurality of keys are arranged asymmetrically in the propeller surface 3 of the propeller 1 The plurality of keys are arranged asymmetrically in the propeller face 3 of the propeller 1 in the left-right direction. Since the rotational direction of the propeller 1 is one direction, in order to obtain a rectifying effect with respect to the propeller wake by the propeller 1, it is not a symmetrical key arrangement structure as in the conventional art, The layout structure is appropriate.

According to the key arrangement structure of the ship related to Embodiments 1 to 6, the effect of rectifying the propeller downstream by the propeller 1 rotating in one direction can be obtained. Therefore, when the code length of the key is shortened to facilitate the stern arrangement, the steering performance is improved over one key and the propulsion performance is not lowered more than if the plurality of keys are arranged symmetrically. Further, since the cord length of the key can be shortened, the stern arrangement can be facilitated, and an elongated linear shape with a small resistance can be designed. Therefore, the propulsion performance of the hull itself can be improved.

According to the key arrangement structure of the ship related to Embodiments 1, 2, 3, 4, and 6, by providing the rotation axis of one key of the plurality of keys at the center in the propeller surface 3, The key can be disposed at the center in the propeller face 3, and the performance of the key disposed at the center can be further enhanced.

According to the key arrangement structure of the ship relating to Embodiments 1, 2, 3 and 6, the rotation axis of the key other than the key provided with the rotation axis at the center in the propeller surface 3 among the plurality of keys is disposed on the propeller surface 3, It is possible to easily arrange the plurality of keys asymmetrically.

According to the key arrangement structure of the ship related to Embodiments 1, 2 and 3, the rotation axis of the key other than the key provided with the rotation axis at the center in the propeller surface 3 among the plurality of keys is rotated The effect of rectifying the propeller 1 by the propeller 1 rotating in one direction can be enhanced and the propulsion performance and the propulsion performance can be made compatible at a high level.

According to the key arrangement structure of the ship according to Embodiment 5, since the rotary shaft of one key of the plurality of keys is provided on either side of the propeller surface 3 at a distance from the center, By arranging the rotary shafts on the opposite side of the propeller surface at a larger distance from the center, even if the keys are not arranged at the center, a plurality of keys can be easily arranged asymmetrically.

Further, according to the key arrangement structure of the ship related to Embodiments 1, 2, and 6, since the number of keys is reduced by arranging a plurality of keys, the structure can be arranged asymmetrically without complicating the structure much.

As described above, according to the key arrangement structure of the ship according to the present embodiment, it is possible to provide a key arrangement structure for a ship capable of shortening the cord length of the key and facilitating the stern arrangement while simultaneously achieving both steering performance and propelling performance.

Example

In order to investigate the influence of the key arrangement in the rear of the propeller, resistance and self-test were conducted in the circulating water tank to evaluate the propelling performance. 7 is a view showing a key arrangement structure of a ship in the embodiment and the comparative example.

(Example 1)

As shown in Fig. 7A, two keys 10 and 11 are arranged in the propeller face 3 behind the propeller. One key 10 (rotational axis A 10 ) of the two keys is arranged in the middle in the left and right direction on the propeller surface 3 (on the ship's center line C behind the propeller 1) The key 11 (the rotary shaft A 11 ) has a space D 11 between the key 10 (the rotary shaft A 10 ) and the right side (the starboard S side) in the propeller face 3 Placed.

D 11 = diameter of propeller face (3) x 0.211

(Example 2)

As shown in Fig. 7 (b), two keys 60 and 61 are arranged in the propeller face 3 behind the propeller. One key 60 (rotational axis A 60 ) of the two keys is arranged in the middle of the propeller plane 3 in the lateral direction (on the ship's center line C behind the propeller 1) The key 61 (the rotational axis A 61 ) has a gap D 61 between the key 60 (the rotational axis A 60 ) and the left side (on the left side P side) in the propeller face 3 Placed.

D 61 = diameter of propeller face (3) x 0.211

(Comparative Example 1)

As shown in Fig. 7C, two keys 101 and 102 are arranged in the propeller face 3 behind the propeller. One key 101 (rotation axis A 101 ) of the two keys is located on the right side (starboard side S) side in the propeller plane 3 and in the center in the left and right direction C) phase] with a gap (D 101 ) between them. The other key 102 (the rotational axis A 102 ) is located on the left side (on the port side P side) in the propeller plane 3 and on the center in the lateral direction (on the ship center line C on the rear of the propeller 1 And a space (D 102 ) therebetween. Spacing D 101 = spacing D 102 .

D 101 = D 102 = diameter of the propeller face (3) x 0.211

(Comparative Example 2)

As shown in Fig. 7 (d), two keys 201 and 202 are arranged in the propeller face 3 behind the propeller. One key 201 (rotation axis A 201 ) of the two keys is located on the right side (starboard side S) side in the propeller plane 3 and in the center in the lateral direction C) phase with a gap (D 201 ) between them. The other key 202 (rotation axis A 202 ) is located on the left side (the P side) of the propeller surface 3 and the center in the left and right direction (the center line C of the ship behind the propeller 1 ] With a gap D 202 therebetween. Interval D 201 = Interval D 202 .

D 201 = D 202 = diameter of the propeller surface (3) x 0.141

With respect to the above four key arrangements, the propelling performance improvement effect of the BHP (horsepower) base was measured based on the comparative example 1. [ The measurement results are shown in Table 1.

Improvement of propulsion performance of BHP (horsepower) base Example 1 / Fig. 7 (a) -5.2% Example 2 / Fig. 7 (b) -3.6% Comparative Example 1 / Fig. 7 (c) standard Comparative Example 2 / Fig. 7 (d) -4.5%

As compared to Comparative Example 1, the improvement effect of about 5.2% in Example 1 was confirmed. Also in Example 2, an improvement effect of about 3.6% was confirmed. This is an improvement of the propulsive force reduction factor and the self-extinguishing factor by the asymmetric key arrangement. In addition, with respect to the right-turn propeller, it was confirmed that the propulsion performance was excellent when one key was disposed on the starboard side (S).

Further, as compared with Comparative Example 1 as a standard, an improvement effect of about 4.5% was confirmed in Comparative Example 2 in which two keys were shifted to the central portion. As described above, when the two keys are arranged symmetrically with respect to each other, the two keys are tilted toward the center to improve the effect of the rebound effect. Therefore, even when the two keys are arranged asymmetrically in the propeller plane, it is considered that the closer the two keys are spaced apart, the more the propulsion performance can be improved.

Although the key arrangement structure of the ship according to the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various other modifications are possible.

For example, in the above-described embodiment, the sizes and shapes of the plurality of keys are the same, but they may be different sizes and shapes.

Further, although a plurality of keys are moved in conjunction with each other, they may be moved independently.

Further, although the direction of rotation of the propeller is made rightward as viewed from the rear of the hull, it may be leftward.

The number of the plurality of keys may be four or more.

Further, a separate key may be additionally disposed on the outside of the propeller surface or in front of the propeller.

The term &quot; asymmetry &quot; in the present invention means that the arrangement of the keys with respect to the rotation axis of the key is asymmetrical, and does not mean that the shape of the left and right keys themselves is asymmetrical. However, if the arrangement of the keys with respect to the rotation axis of the key is asymmetric, the left and right keys themselves may be asymmetrical in shape.

1: Propeller 2: Propeller shaft
3: propeller side 4: rudder horn
5: Hull 10: Key
11: Key 20: Key
21: Key 30: Key
31: Key 32: Key
40: key 41: key
42: Key 51: Key
52: key 60: key
61: Key 100: Key
101: key 102: key
201: key 202: key
A:

Claims (6)

A key arrangement structure of a ship having a propeller and a plurality of keys, wherein the rotary shafts of the plurality of keys are provided asymmetrically in the propeller surface of the propeller, and the plurality of keys are arranged asymmetrically in the propeller surface of the propeller And a key arrangement structure of the ship. The key arrangement structure of a ship according to claim 1, wherein a rotational axis of one of the plurality of keys is provided at the center of the propeller surface. The key arrangement structure of a ship according to claim 2, wherein a rotary shaft of a key other than a key provided with a rotary shaft at the center of the propeller surface among the plurality of keys is provided on either side of the propeller surface. 3. The ship according to claim 2, wherein a rotary shaft of a key other than a key provided with a rotary shaft at the center of the propeller surface is provided on a side where the propeller descends at the time of rotation within the propeller surface Layout structure. The propeller according to claim 1, wherein a rotation axis of one key of the plurality of keys is provided on either side of the propeller surface at an interval from the center, and the rotation axis of the remaining key among the plurality of keys is disposed on the opposite side Is arranged at a larger spacing than the key arrangement structure of the ship. The key arrangement structure of a ship according to any one of claims 1 to 5, wherein the plurality of keys are two.
KR1020187002050A 2015-07-25 2016-07-22 Key arrangement structure of ship KR20180020260A (en)

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JP2015147277 2015-07-25
JPJP-P-2015-147277 2015-07-25
PCT/JP2016/071616 WO2017018357A1 (en) 2015-07-25 2016-07-22 Rudder arrangement structure for ship

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CN112590475A (en) * 2020-12-25 2021-04-02 芜湖造船厂有限公司 Electric steering structure of amphibious vehicle and control method thereof

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GB294918A (en) * 1927-03-21 1928-07-23 Hans Hass Improvements in balanced ships' rudders
JPS59135300U (en) * 1983-03-01 1984-09-10 石川島播磨重工業株式会社 marine rudder
JPS60131497U (en) * 1984-02-14 1985-09-03 石川島播磨重工業株式会社 marine rudder
JP2552808Y2 (en) * 1991-03-16 1997-10-29 川崎重工業株式会社 Boat rudder
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JP2010095239A (en) * 2008-10-15 2010-04-30 Miura Shipbuilding Co Ltd Rudder device for marine vessel
KR101110392B1 (en) * 2008-12-09 2012-02-24 현대중공업 주식회사 Asymmetrical ship rudder form and section
JP2011025734A (en) * 2009-07-22 2011-02-10 Universal Shipbuilding Corp Compound energy-saving propulsion system for ship, and single-screw twin-rudder ship
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JP5756204B1 (en) * 2014-03-20 2015-07-29 常石造船株式会社 Rudder arrangement structure of ship

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CN107848615A (en) 2018-03-27
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JPWO2017018357A1 (en) 2018-05-10

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