JP2017149293A - Coupling members, masts and ships - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection component which can increase a fatigue strength.SOLUTION: A connection component comprises a first square cylindrical part 1 which has a square cylindrical shape and extends in a first direction D1, and a second square cylindrical part 2 which has a square cylindrical shape, extends a second direction D2 crossing the first direction D1, and is connected to the first square cylindrical part 1. The first square cylindrical part 1 has a first main wall part which extends in the first direction D1 and the second direction D2. The second square cylindrical part 2 has a second main wall part which extends in a direction same as that of the first main wall part. The first main wall part and the second main wall part are relevant to a first main member which is formed by one plate member having an integral shape.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a coupling member, a mast, and a ship.

  The ship is provided with a mast having a sail and an antenna. Such a mast is constituted by joining a plurality of steel materials by welding. As a ship structure for joining a plurality of steel materials, for example, Patent Document 1 describes a steel structure of a bow portion. This steel structure has a joint steel material arranged at a portion where ends of a plurality of steel materials are joined. This joint steel material is formed in accordance with the contour shape of the end portions of a plurality of steel materials, and constitutes a part of the steel structure portion by butt welding the end portions of the steel materials.

  By the way, among the members constituting the ship, the mast extends greatly from the deck. As a result, the mast continues to vibrate greatly due to being greatly affected by the wind generated by the ship sailing. Therefore, the mast needs to ensure sufficient fatigue strength.

JP-A-63-140774

  However, the mast is composed of, for example, a mast main body that extends vertically upward from the deck, a yard that extends horizontally from the mast main body, and a plurality of stays that connect the yard and the mast. That is, the mast is made of a steel material extending in different directions. Stress concentration tends to occur at the joint where the steel materials extending in different directions are welded together. Therefore, there is a high possibility that fatigue fracture will occur at the joint location. Accordingly, it is desired to improve the fatigue strength by joining steel materials extending in different directions in a state where stress concentration hardly occurs.

  This invention is made | formed in order to solve the said subject, Comprising: It aims at providing the coupling member, mast, and ship which can improve fatigue strength.

In order to solve the above problems, the present invention proposes the following means.
The coupling member according to the first aspect of the present invention includes a first rectangular tube portion that has a rectangular tube shape and extends in the first direction, and a rectangular tube shape that extends in a second direction intersecting the first direction, A second square tube portion connected to the first square tube portion, the first square tube portion having a first main wall portion extending in the first direction and the second direction, The square tube portion has a second main wall portion extending in the same direction as the first main wall portion, and the first main wall portion and the second main wall portion are one plate member forming an integral shape. It is the 1st main member formed by.

  According to such a configuration, one side surface of the first rectangular tube portion and the second rectangular tube portion is integrated without being welded. Therefore, the number of welds provided between the member extending in the first direction and the member extending in the second direction can be reduced. As a result, one side surface of the first rectangular tube portion and the second rectangular tube portion is integrally formed without being welded, so that it is rigidly continuous, and between the first rectangular tube portion and the second rectangular tube portion. Stress concentration is less likely to occur.

  Further, in the coupling member according to the second aspect of the present invention, in the first aspect, the first rectangular tube portion is disposed at a position closest to the second rectangular tube portion and extends in the first direction. A first adjacent sub-wall portion extending and connected to intersect with the first main wall portion, and the second rectangular tube portion is connected to intersect with the second main wall portion in the second direction. A second sub-wall portion extending between the first adjacent sub-wall portion and the second sub-wall portion, and connecting the first adjacent sub-wall portion and the second sub-wall portion. You may provide the connection part.

  According to such a configuration, the first proximity subwall and the second subwall are indirectly connected by the connection portion. Therefore, even if it is the structure where a 2nd square cylinder part is connected diagonally with respect to a 1st square cylinder part, it can suppress that a narrow part is formed. Therefore, the welding to a narrow part can be reduced and the soundness of a welding part can be ensured.

  Further, in the coupling member according to the third aspect of the present invention, in the first or second aspect, the coupling member has a rectangular tube shape and extends in the third direction intersecting with the first direction and the second direction. A first triangular tube portion connected to the single angle tube portion, the first square tube portion being disposed at a position farthest from the second square tube portion and extending in the first direction; A first remote subwall portion connected across the main wall portion, the third triangular tube portion having a third main wall portion extending in the same direction as the first remote subwall portion, The remote sub-wall portion and the third main wall portion may be a second main member formed of a single plate member having an integral shape.

  According to such a configuration, it is possible to reduce the number of welds provided not only between the member extending in the first direction and the member extending in the second direction but also between the member extending in the third direction. As a result, one side surface of the first rectangular tube portion and the third triangular tube portion is integrally formed without being welded, so that it becomes rigidly continuous, and stress is generated between the first rectangular tube portion and the third triangular tube portion. Concentration is less likely to occur. This improves the fatigue strength not only between the first square tube portion and the second square tube portion, but also between the first square tube portion and the third triangular tube portion, and further increases the fatigue strength as a coupling member. Can be improved.

  Further, in the coupling member according to the fourth aspect of the present invention, in the third aspect, the first main member and the second main member are connected by a bent portion, and formed by one plate member that forms an integral shape. It may be a bent member.

  According to such a structure, it can be set as a seamless structure from a 2nd main wall part to a 3rd main wall part via a 1st main wall part and a 1st remote subwall part. Therefore, the number of welds can be further reduced. As a result, the first main wall portion and the first remote sub-wall portion are rigidly continuous, and stress concentration is less likely to occur at the corner portion of the first rectangular tube portion. Thereby, the fatigue strength as a 1st square cylinder part can be improved, and the fatigue strength as a coupling member can be improved more.

  Further, in the mast according to the fifth aspect of the present invention, the mast is connected to the coupling member according to any one of the first to fourth aspects and the first end portion in the first direction of the first rectangular tube portion. Connected to the first square member extending in the first direction in a square tube shape and the second end portion in the first direction of the first square tube portion, A second rectangular member extending in the first direction and a first triangular member connected to the first end of the second rectangular tube portion in the second direction and extending in the second direction in a rectangular tube shape With.

  According to such a configuration, the reliability of the connection structure among the first square member, the second square member, and the third triangular member can be enhanced.

  The ship according to the sixth aspect of the present invention includes a main hull provided with the mast according to the fifth aspect.

  According to the present invention, fatigue strength can be improved.

It is a schematic diagram which shows the ship of embodiment of this invention. It is a principal part enlarged view which shows the coupling member provided in the mast of 1st embodiment of this invention. It is a top view which shows the coupling member of 1st embodiment of this invention. It is a top view which shows the coupling member of 2nd embodiment of this invention.

<< first embodiment >>
Hereinafter, a ship 100 according to an embodiment of the present invention will be described with reference to the drawings.
The ship 100 is provided with the main hull 10 provided with the mast 20, as shown in FIG. Examples of the ship 100 include ships and vehicle carriers.

The mast 20 is provided on the deck of the main hull 10. The mast 20 is provided at the center position in the ship width direction of the main hull 10. The mast 20 of this embodiment is a tower-shaped monopole mast. The mast 20 includes a main mast portion 30, a yard portion 40, a stay portion 50, and a coupling member 6.
The main mast portion 30 extends upward in the vertical direction Dv from a superstructure provided on the deck. The main mast portion 30 has a rectangular tube shape.

  The yard portion 40 extends from the main mast portion 30 in the horizontal direction Dh. The yard portion 40 is provided above the main mast portion 30. A plurality of (two in the first embodiment) yard portions 40 are provided for one main mast portion 30 so as to face both sides of the main hull 10 in the ship width direction. The yard portion 40 has a rectangular tube shape. The yard portion 40 is configured by a plurality of members (two in the first embodiment). The yard portion 40 of the present embodiment includes a first yard member (first square member) 4a and a second yard member (second square member) 4b.

  The first yard member 4a extends in a rectangular tube shape. The first yard member 4 a is directly joined by welding a first end (one end) in the extending direction to the main mast portion 30. The first yard member 4a is connected vertically to the main mast portion 30 and extends in the horizontal direction Dh. As for the 1st yard member 4a, the 2nd end part (other end part) of the extending direction is connected with the 2nd yard member 4b via the coupling member 6 mentioned later.

  The second yard member 4b extends in a rectangular tube shape. The second yard member 4 b is connected to the first yard member 4 a through the coupling member 6 at the first end in the extending direction. The second yard member 4b is arranged coaxially with the first yard member 4a and extends in the horizontal direction Dh.

  The stay portion 50 extends in a direction inclined with respect to the main mast portion 30 and the yard portion 40. The stay portion 50 is provided below the yard portion 40. A plurality of stay portions 50 are provided corresponding to the yard portion 40. The stay portion 50 of the present embodiment is constituted by a stay member (first triangular member) 5a.

  The stay member 5a extends in a rectangular tube shape. The stay member 5 a is directly joined to the main mast portion 30 by welding the first end portion in the extending direction. The stay member 5a extends with an inclination so as to be directed upward in the vertical direction Dv toward the outer side in the ship width direction with respect to the main mast portion 30. The stay member 5 a is joined to the coupling member 6 by welding the second end in the extending direction. The second end of the stay member 5a is indirectly connected to the first yard member 4a and the second yard member 4b via a coupling member.

  The coupling member 6 is arrange | positioned in the connection location of the members extended in a different direction. The coupling member 6 of the first embodiment is disposed at a connection location between three members extending in two different directions. As for the coupling member 6, the 1st yard member 4a, the 2nd yard member 4b, and the stay member 5a are joined. As shown in FIG. 2, each member of the coupling member 6 is joined by welding via a chill plate (not shown). That is, between the first yard member 4a and the coupling member 6, between the second yard member 4b and the coupling member 6, and between the stay member 5a and the coupling member 6 is welded. They are joined by welds to be formed. As shown in FIG. 3, the coupling member 6 includes a first rectangular tube portion 1 and a second rectangular tube portion 2.

  The first rectangular tube portion 1 has a rectangular tube shape and extends in the first direction D1. The first rectangular tube portion 1 has a rectangular cross section. The 1st square cylinder part 1 is comprised by the four wall part. That is, the first rectangular tube portion 1 has a rectangular tube shape having four side surfaces. As for the 1st square cylinder part 1, the both ends of the 1st direction D1 are open | released. The first end portion in the first direction D1 of the first square tube portion 1 is joined to the first yard member 4a by a welded portion. The second end portion in the first direction D1 of the first rectangular tube portion 1 is joined to the second yard member 4b by a welded portion. The second rectangular tube portion 2 is connected to one wall portion of the first rectangular tube portion 1. The first rectangular tube portion 1 of the present embodiment includes a first A wall portion (first main wall portion) 11, a first B wall portion (first main wall portion) 12, a first C wall portion 13, 1st D wall part (1st proximity subwall part) 14, 1st E wall part (1st proximity subwall part) 15, 1st connection wall part (connection part) 16, and 2nd connection wall part ( Connection portion) 17.

  Here, the first direction D1 in the first embodiment is a direction in which the first yard member 4a and the second yard member 4b extend, and is the horizontal direction Dh.

  The first A wall portion 11 is one of a plurality of wall portions forming the first rectangular tube portion 1. The first A wall portion 11 extends in the first direction D1 and the second direction D2 intersecting the first direction D1. The first A wall portion 11 is formed with a pair of first A main planes 110 that face the direction intersecting the first direction D1 and the second direction D2. One of the first A main planes 110 of the pair forms one of the side surfaces facing the outside of the first rectangular tube portion 1. The first A main plane 110 has a rectangular shape with the first direction D1 as the longitudinal direction.

  The 1st A wall part 11 is a part of 1st main member formed with the one plate member which makes the 2nd A wall part 21 and the 2nd A wall part 21 of the 2nd square cylinder part 2 mentioned later. That is, the 1st A wall part 11 is not a single member but a flat member integrally formed with the 2nd A wall part 21 so that it may be extracted from one steel plate.

  Here, the second direction D2 in the first embodiment is a direction that is inclined and intersects the first direction D1. Specifically, the second direction D2 is a direction in which the stay member 5a extends, and is a direction inclined with respect to the vertical direction Dv and the horizontal direction Dh. More specifically, the second direction D2 is a direction inclined by about 45 ° with respect to the vertical direction Dv and the horizontal direction Dh, for example.

  In addition, the direction intersecting the first direction D1 and the second direction D2 in which the first A main plane 110 faces in the first embodiment is a direction orthogonal to the first direction D1 and the second direction D2. Specifically, the direction in which the first A main plane 110 faces is the direction orthogonal to the vertical direction Dv and the horizontal direction Dh, and is the bow-tail direction Db of the main hull 10.

  The first B wall portion 12 is one of a plurality of wall portions forming the first rectangular tube portion 1. The first B wall portion 12 extends in the first direction D1 and the second direction D2. The first B wall portion 12 is disposed away from the first A wall portion 11 in the fore-and-aft direction Db. The first B wall portion 12 and the first A wall portion 11 are the first main wall portion of the first rectangular tube portion 1. The first B wall portion 12 is formed with a pair of first B main planes 120 facing the bow-tail direction Db. That is, one of the pair of first B main planes 120 is the side facing the outside of the first rectangular tube part 1 and the side formed by the first A main plane 110 is the opposite side of the fore-and-aft direction Db. The side that faces is formed. The first B wall portion 12 of the present embodiment has the same shape as the first A wall portion 11. That is, the first B main plane 120 has a rectangular shape whose longitudinal direction is the first direction D1.

  The 1st B wall part 12 is a part of 1st main member formed with the one plate member which makes the 2nd B wall part 22 and the 2nd B wall part 22 of the 2nd square cylinder part 2 mentioned later. That is, the 1st B wall part 12 is not a single member like the 1st A wall part 11, but the flat plate shape integrally formed with the 2nd B wall part 22 so that it may be extracted from one steel plate. It is a member. Therefore, in the coupling member 6 of the first embodiment, the first main member constituted by the first A wall portion 11 and the second A wall portion 21, the first B wall portion 12 and the second B wall portion 22. The two first main members are arranged in parallel with the first main member constituted by

  The first C wall portion 13 intersects with and is connected to the first A wall portion 11 and the first B wall portion 12. The first C wall portion 13 extends in the first direction D1 and the fore / aft direction Db. The first C wall portion 13 is one of the plurality of wall portions of the first rectangular tube portion 1 and is disposed at a position farthest from the second rectangular tube portion 2. The 1st C wall part 13 of this embodiment is arrange | positioned so that the 1st A wall part 11 and the 1st B wall part 12 may be orthogonally crossed.

  The first C wall portion 13 is formed with a pair of first C main planes 130 that face in a direction (vertical direction Dv in the present embodiment) orthogonal to the first direction D1 and the fore / aft direction Db. Therefore, the vertical direction Dv in the first embodiment is a direction including the component of the second direction D2. One of the pair of first C main planes 130 forms a side surface facing the outside of the first rectangular tube portion 1 on the side not connected to the second rectangular tube portion 2. The first C main plane 130 has a rectangular shape with the first direction D1 as the longitudinal direction. The first C wall portion 13 is joined to the first A wall portion 11 and the first B wall portion 12 by welding portions at both ends in the bow-tail direction Db.

  The first D wall portion 14 intersects and is connected to the first A wall portion 11 and the first B wall portion 12. The first D wall portion 14 extends in the first direction D1 and the fore / aft direction Db. The first D wall portion 14 is one of the plurality of wall portions of the first rectangular tube portion 1 and is disposed at a position closest to the second rectangular tube portion 2. The 1st C wall part 13 of this embodiment is arrange | positioned so that the 1st A wall part 11 and the 1st B wall part 12 may be orthogonally crossed. The first D wall portion 14 is disposed away from the first C wall portion 13 in the vertical direction Dv. The first D wall portion 14 is disposed closer to the first end portion in the first direction D1 than the second rectangular tube portion 2.

  The first D wall portion 14 is formed with a pair of first D main planes 140 facing the vertical direction Dv. The first D wall portion 14 has a rectangular flat plate shape shorter than the first C wall portion 13. That is, one of the pair of first D main planes 140 is a part of the side surface of the first rectangular tube portion 1 facing the opposite side of the vertical direction Dv with respect to the side surface formed by the first C main plane 130. Is forming. The first D main plane 140 forms part of the side surface to which the second rectangular tube portion 2 is connected. The first D wall portion 14 is joined to the first A wall portion 11 and the first B wall portion 12 by welding portions at both ends in the bow-tail direction Db.

  The first E wall portion 15 intersects and is connected to the first A wall portion 11 and the first B wall portion 12. The first E wall portion 15 extends in the first direction D1 and the fore / aft direction Db. The first E wall portion 15 is one of the plurality of wall portions of the first square tube portion 1 and is disposed at the closest position to the second square tube portion 2 as with the first D wall portion 14. Has been. The 1st E wall part 15 of this embodiment is arrange | positioned so that the 1st A wall part 11 and the 1st B wall part 12 may be orthogonally crossed. The first E wall portion 15 is disposed closer to the second end portion in the first direction D1 than the second rectangular tube portion 2. That is, the first E wall portion 15 is disposed on the opposite side of the first direction D1 with respect to the first D wall portion 14 via the second rectangular tube portion 2. The first E wall 15 is disposed away from the first C wall 13 in the vertical direction Dv by the same distance as the first D wall 14.

  The first E wall portion 15 is formed with a pair of first E main planes 150 that face the vertical direction Dv. The first E wall portion 15 is disposed at the same position as the first D wall portion 14 in the vertical direction Dv. The first E wall portion 15 has a rectangular flat plate shape shorter than the first C wall portion 13. One of the pair of first E main planes 150 forms a part of the side surface of the first rectangular tube portion 1 facing the opposite side of the vertical direction Dv with respect to the first C main plane 130. The first E main plane 150, together with the first D main plane 140, forms part of the side surface to which the second rectangular tube portion 2 is connected. The first E wall portion 15 is joined to the first A wall portion 11 and the first B wall portion 12 by welding portions at both ends in the bow-tail direction Db.

  The 1st connection wall part 16 is arrange | positioned between the 1st D wall part 14 and the 2nd C wall part 23 of the 2nd square cylinder part 2 mentioned later. The first connection wall portion 16 connects the first D wall portion 14 and the second C wall portion 23. The first connection wall portion 16 is disposed so as to be surrounded by the first A wall portion 11, the first B wall portion 12, and the first C wall portion 13. The first connection wall portion 16 has a rectangular flat plate shape.

  An end face of the first connection wall portion 16 facing the vertical direction Dv is joined to a first C main plane 130 facing the first D wall portion 14 side by a welded portion. The end surfaces of the first connection wall portion 16 facing the bow-tail direction Db are a first A main plane 110 facing the first B wall portion 12 side and a first B main plane 120 facing the first A wall portion 11 side. They are joined by welds. In the first connection wall portion 16, the end surface facing the vertical direction Dv of the first connection wall portion 16 on the side not joined to the first C wall portion 13 is the second rectangular tube portion 2 than the first D wall portion 14. It is arranged to protrude to the side. The first connection wall portion 16 is formed with a pair of first connection plate surfaces 160 extending in the vertical direction Dv in the first direction D1. The first connection plate surface 160 facing the first D wall portion 14 side is joined to the end surface of the first D wall portion 14 by a welded portion.

  The 2nd connection wall part 17 is arrange | positioned between the 1st E wall part 15 and the 2nd D wall part 24 of the 2nd square cylinder part 2 mentioned later. The second connection wall 17 connects the first E wall 15 and the second D wall 24. The second connection wall portion 17 is disposed so as to be surrounded by the first A wall portion 11, the first B wall portion 12, and the first C wall portion 13. The second connection wall portion 17 has a larger rectangular flat plate shape than the first connection wall portion 16.

  The end face of the second connection wall portion 17 facing the vertical direction Dv is joined to the first C main plane 130 facing the first D wall portion 14 by a welded portion. The end surface of the second connection wall portion 17 facing the bow-tail direction Db is a first A main plane 110 facing the first B wall portion 12 side and a first B main plane 120 facing the first A wall portion 11 side. They are joined by welds. The second connecting wall portion 17 is such that the end surface facing the vertical direction Dv of the first connecting wall portion 16 on the side not joined to the first C wall portion 13 is the second rectangular tube portion 2 than the first E wall portion 15. It is arranged to protrude to the side. The second connection wall portion 17 is formed with a pair of second connection plate surfaces 170 extending in the vertical direction Dv facing the first direction D1. The second connection plate surface 170 facing the first E wall 15 side is joined to the end surface of the first E wall 15 by a welded portion.

  The second rectangular tube portion 2 forms a rectangular tube shape and extends in the second direction D2. The second rectangular tube portion 2 has a rectangular cross section. The 2nd square cylinder part 2 is comprised by the four wall parts. That is, the first rectangular tube portion 1 has a rectangular tube shape having four side surfaces. As for the 2nd square cylinder part 2, the 1st edge part of the 2nd direction D2 is open | released. The first end portion of the second square tube portion 2 in the second direction D2 is joined to the stay member 5a by a welded portion. The second rectangular tube portion 2 is connected to the first rectangular tube portion 1 at the second end in the second direction D2. The second rectangular tube portion 2 of the present embodiment includes a second A wall portion (second main wall portion) 21, a second B wall portion (second main wall portion) 22, and a second C wall portion (second A sub-wall portion) 23 and a second D-wall portion (second sub-wall portion) 24.

  The second A wall portion 21 is one of a plurality of wall portions forming the second rectangular tube portion 2. The second A wall portion 21 extends in the first direction D1 and the second direction D2. The second A wall portion 21 is formed in a pair so that the second A main plane 210 facing the fore / aft direction Db is parallel to the first A main plane 110 and arranged at the same position in the fore / aft direction Db. . One of the second A main planes 210 of the pair forms one of the side surfaces of the second rectangular tube portion 2. The second A main plane 210 has a trapezoidal shape that is long in the second direction D2.

  The second A wall portion 21 is a part of the first main member formed of one plate member that is integrally formed with the first A wall portion 11. That is, the second A wall portion 21 and the first A wall portion 11 are connected without a seam such as a welded portion. Accordingly, the second A wall portion 21 and the first A wall portion 11 are formed as a single flat plate having a Y-shaped plane in which the second A main plane 210 and the first A main plane 110 are seamlessly continuous. ing.

  The second B wall portion 22 is one of a plurality of wall portions that form the second rectangular tube portion 2. The second B wall portion 22 extends in the first direction D1 and the second direction D2. The second B wall portion 22 is disposed away from the second A wall portion 21 in the fore / aft direction Db. The second B wall portion 22 and the second A wall portion 21 are second main wall portions of the second rectangular tube portion 2. The second B wall portion 22 is formed with a pair of second B main planes 220 facing the bow-tail direction Db. That is, one of the pair of second B main planes 220 faces the side opposite to the fore-and-aft direction Db with respect to the side surface formed by the second A main plane 210 among the side surfaces of the second rectangular tube portion 2. It forms the side. The second B wall portion 22 of the present embodiment has the same shape as the second A wall portion 21. The second B main plane 220 has a trapezoidal shape that is long in the second direction D2.

  The second B wall portion 22 is formed of a single plate member that is integrally formed with the first B wall portion 12. That is, between the second B wall portion 22 and the first B wall portion 12, there is no joint portion such as a welded portion. Accordingly, the second B wall portion 22 and the first B wall portion 12 are formed as a single flat plate having a Y-shaped plane in which the second B main plane 220 and the first B main plane 120 are seamlessly continuous. ing.

  The second C wall portion 23 intersects with and is connected to the second A wall portion 21 and the second B wall portion 22. The second C wall portion 23 extends in the second direction D2 and the fore / aft direction Db. The second C wall portion 23 is one of the plurality of wall portions of the second rectangular tube portion 2. The 2nd C wall part 23 of this embodiment is arrange | positioned so that the 2nd A wall part 21 and the 2nd B wall part 22 may be orthogonally crossed. The 2nd C wall part 23 is arrange | positioned so that the angle made with the 1st D wall part 14 may become an obtuse angle. The second C wall portion 23 is formed with a pair of second C main planes 230 facing in a direction orthogonal to the second direction D2 and the fore / aft direction Db. The second C wall portion 23 has a rectangular flat plate shape. That is, the second C main plane 230 has a rectangular shape whose longitudinal direction is the second direction D2. One of the pair of second C main planes 230 forms a side surface facing the outside of the second rectangular tube portion 2.

  The second C wall portion 23 is joined to the second A wall portion 21 and the second B wall portion 22 by welding portions at both ends in the bow-tail direction Db. An end portion of the second C wall portion 23 on the first square tube portion 1 side in the second direction D2 is indirectly connected to the first D wall portion 14 via the first connection wall portion 16. Specifically, the end portion of the second C wall portion 23 is joined to the first connection plate surface 160 facing the first E wall portion 15 side of the first connection wall portion 16 by a welded portion. That is, the second C wall portion 23 is a member different from the first D wall portion 14 and the first connection wall portion 16.

  The second D wall portion 24 intersects and is connected to the second A wall portion 21 and the second B wall portion 22. The second D wall portion 24 extends in the second direction D2 and the fore / aft direction Db. The second D wall portion 24 is one of the plurality of wall portions of the second rectangular tube portion 2. The 2nd D wall part 24 of this embodiment is arrange | positioned so that the 2nd A wall part 21 and the 2nd B wall part 22 may be orthogonally crossed. The second D wall portion 24 is arranged away from the second C wall portion 23 in a direction orthogonal to the second direction D2 and the fore / aft direction Db. The 2nd D wall part 24 is arrange | positioned so that the angle which makes with the 1st E wall part 15 may become an acute angle. The second D wall portion 24 is formed with a pair of second D main planes 240 facing in the same direction as the second C main plane 230. The second D wall portion 24 has a rectangular flat plate shape shorter than the first C wall portion 13. That is, the second D main plane 240 has a rectangular shape whose longitudinal direction is the second direction D2. One of the pair of second D main planes 240 forms a side surface facing the first E wall portion 15 of the second rectangular tube portion 2.

  The second D wall portion 24 is joined to the second A wall portion 21 and the second B wall portion 22 by welding portions at both ends in the bow-tail direction Db. The end of the second D wall portion 24 on the first square tube portion 1 side in the second direction D2 is indirectly connected to the first E wall portion 15 via the second connection wall portion 17. Specifically, the end portion of the second D wall portion 24 is joined to the second connection plate surface 170 facing the first E wall portion 15 side of the second connection wall portion 17 by a welded portion. That is, the second D wall 24 is a member different from the first E wall 15 and the second connection wall 17.

  According to the coupling member 6 of the first embodiment, the first A wall portion 11 and the second A wall portion 21 are not welded and formed as a first main member that is a continuous single flat plate. Has been. As a result, the number of welds provided between a member extending in the first direction D1 such as the first yard member 4a and the second yard member 4b and a member extending in the second direction D2 such as the stay member 5a is reduced. Can be reduced. Since one side surface of the first rectangular tube portion 1 and the second rectangular tube portion 2 is integrally formed without being welded, the first rectangular tube portion 1 and the second rectangular tube portion 2 are rigidly continuous. Stress concentration is less likely to occur. Thereby, the fatigue strength between the 1st square cylinder part 1 and the 2nd square cylinder part 2 can be improved.

  Further, not only the first A wall portion 11 and the second A wall portion 21 but also the first B wall portion 12 and the second B wall portion 22 are not welded and are a single continuous flat plate. It is formed as one main member. By providing two first main members, the number of welds can be further reduced. Therefore, the side surface which becomes rigidly continuous can be increased, and stress concentration is less likely to occur between the first rectangular tube portion 1 and the second rectangular tube portion 2. Thereby, the fatigue strength between the 1st square cylinder part 1 and the 2nd square cylinder part 2 can be improved more.

  Further, the first D wall portion 14 and the second C wall portion 23 are indirectly connected by the first connection wall portion 16. Similarly, the first E wall 15 and the second D wall 24 are indirectly connected by the second connection wall 17. Therefore, when joining the 1st square cylinder part 1 and the 2nd square cylinder part 2, the joining member 6 is connected without connecting a member between the 1st D wall part 14 and the 1st E wall part 15. Can be manufactured. Thereby, even if it is the structure where the 2nd square cylinder part 2 is diagonally connected with respect to the 1st square cylinder part 1 like this embodiment, it can suppress that a narrow part is formed. Therefore, the welding to a narrow part can be reduced and the soundness of a welding part can be ensured.

  Further, the first D wall portion 14 and the second C wall portion 23 are indirectly connected by the first connection wall portion 16. For this reason, the first D wall portion 14 and the second C wall portion 23 are not formed in a single piece by bending the flat plate, but can be configured as a combination of flat plates. Similarly, the first E wall 15 and the second D wall 24 are indirectly connected by the second connection wall 17. For this reason, the first E wall portion 15 and the second D wall portion 24 are not integrally formed by bending a flat plate, but can be configured by combining flat plates. Therefore, the processing man-hour of the coupling member 6 can be reduced as a simple structure in which the flat plates are simply joined by welding.

  Moreover, the reliability of the connection structure between the 1st yard member 4a, the 2nd yard member 4b, and the stay member 5a can be improved. Therefore, even if the mast 20 continues to vibrate under the influence of wind and waves as the ship 100 sails, the connecting portions of the members extending in different directions between the first direction D1 and the second direction D2 are present. It is possible to suppress damage due to fatigue.

<< Second Embodiment >>
Next, the ship of the second embodiment will be described with reference to FIG.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The ship of this 2nd embodiment is different from 1st embodiment about a connection member.

  In addition to the 1st square cylinder part 3 and the 2nd square cylinder part 4, the connection member 60 of 2nd embodiment has the 3rd triangular cylinder part 5 extended in the 3rd direction D3.

  The third direction D3 is a direction that intersects the first direction D1 and the second direction D2. The third direction D3 of the present embodiment is a direction that is orthogonal to the first direction D1 and the second direction D2 and is inclined with respect to the bow / stern direction Db.

  The coupling member 60 of the second embodiment is disposed at a connection location between four members extending in three different directions. In addition to the first yard member 4a, the second yard member 4b, and the stay member 5a, the coupling member 60 is joined to a second stay member (not shown) that is a quadrangular member. The second stay member has the same shape as the stay member 5a and extends in the third direction D3. As shown in FIG. 4, the coupling member 60 includes a first rectangular tube portion 3, a second rectangular tube portion 4, and a third triangular tube portion 5.

  As for the 1st square cylinder part 3 of 2nd embodiment, the 2nd square cylinder part 4 is connected with respect to one wall part. As for the 1st square cylinder part 3, the 3rd triangular cylinder part 5 is connected with respect to the other side surface which cross | intersects the side surface to which the 2nd square cylinder part 4 was connected. In the 1st square cylinder part 3, the position of the 1st direction D1 of the location where the 2nd square cylinder part 4 is connected, and the position of the 1st direction D1 of the location where the 3rd triangular cylinder part 5 is connected correspond. . The first rectangular tube portion 3 of the second embodiment is different from the first rectangular tube portion 1 of the first embodiment in the configuration of the wall portion. The first rectangular tube portion 3 includes a first A wall portion (first main wall portion) 31, a first B wall portion (first main wall portion) 32, and a first C wall portion (first remote subwall portion). ) 33, a first D wall portion (first proximity subwall portion) 34, and a partition wall portion 35.

  The first A wall portion 31 is one of a plurality of wall portions that form the first rectangular tube portion 3. The 1st A wall part 31 is extended in the 1st direction D1 and the 2nd direction D2 similarly to 1st embodiment. In the second embodiment, only the first A wall portion 31 is the first main wall portion of the first rectangular tube portion 3. The first A wall portion 31 is formed with a pair of first A main planes 310 facing the bow-tail direction Db. One of the first A main planes 310 of the pair forms one of the side surfaces facing the outside of the first rectangular tube portion 3. The first A main plane 310 has a rectangular shape with the first direction D1 as the longitudinal direction.

  The first A wall portion 31 is a part of the first main member formed of one plate member that is integrally formed with the second A wall portion 41 of the second rectangular tube portion 4. Further, the first A wall portion 31 is formed of a single plate member that forms an integral shape with the first C wall portion 33 as well as the second A wall portion 41.

  The first B wall portion 32 is one of a plurality of wall portions that form the first rectangular tube portion 3. Unlike the first embodiment, the first B wall portion 32 is connected to the third triangular tube portion 5. The 1st B wall part 32 is extended in the 1st direction D1 and the 2nd direction D2 similarly to 1st embodiment. The first B wall portion 32 is disposed away from the first A wall portion 31 in the fore-and-aft direction Db. The first B wall portion 32 is formed with a pair of first B main planes 320 facing the bow-tail direction Db. That is, one of the pair of first B main planes 320 is the opposite side of the fore-and-aft direction Db from the side surface formed by the first A main plane 310 among the side surfaces facing the outside of the first rectangular tube portion 3. The side that faces is formed. The first B main plane 320 has a rectangular shape whose longitudinal direction is the first direction D1. The first B main plane 320 forms a part of the side surface to which the third triangular cylinder portion 5 is connected.

  The first B wall portion 32 is formed by bending one plate member that is integrated with the first D wall portion 34. The first B wall portion 32 is not a single member but a flat plate member that is processed so as to be bent after being extracted from one steel plate together with the first D wall portion 34.

  The first C wall portion 33 is one of the plurality of wall portions of the first rectangular tube portion 3 and is disposed at a position farthest from the second rectangular tube portion 4. The 1st C wall part 33 of this embodiment is arrange | positioned so that the 1st A wall part 31 and the 1st B wall part 32 may be orthogonally crossed.

  The first C wall portion 33 is formed with a pair of first C main planes 330 that face the vertical direction Dv. One of the pair of first C main planes 330 forms a side surface facing the outside of the first rectangular tube portion 3 on the side not connected to the second rectangular tube portion 4. The first C main plane 330 has a rectangular shape with the first direction D1 as the longitudinal direction. The first C wall portion 33 is joined to the first B wall portion 32 by a welded portion. The first C wall portion 33 is connected to the first A wall portion 31 in a continuous integrated shape through the bent portion by being subjected to bending.

  The first D wall portion 34 intersects with and is connected to the first A wall portion 31 and the first B wall portion 32. The first D wall 34 extends in the first direction D1 and the fore / aft direction Db. The first D wall portion 34 is one of the plurality of wall portions of the first rectangular tube portion 3 and is disposed at a position closest to the second rectangular tube portion 4. The first D wall portion 34 of the present embodiment is disposed so as to be orthogonal to the first A wall portion 31 and the first B wall portion 32. The first D wall 34 is disposed away from the first C wall 33 in the vertical direction Dv.

  The first D wall portion 34 is formed with a pair of first D main planes 340 facing the vertical direction Dv. The first D wall 34 has a rectangular flat plate shape. That is, one of the pair of first D main planes 340 is a part of the side surface of the first rectangular tube portion 3 facing the opposite side of the vertical direction Dv with respect to the side surface formed by the first C main plane 330. Is forming. The first D main plane 340 forms part of the side surface to which the second rectangular tube portion 4 is connected. The 1st D wall part 34 is joined to the 1st A wall part 31 by the welding part. The first D wall portion 34 is connected to the first B wall portion 32 in a continuous integrated shape through the bent portion by being subjected to bending. Therefore, the 1st B wall part 32 and the 1st D wall part 34 are one plate-shaped member bent so that a bending part may make a right angle.

  The partition wall portion 35 is disposed inside the first rectangular tube portion 3. The partition wall portion 35 is disposed so as to be surrounded by the first A wall portion 31, the first B wall portion 32, the first C wall portion 33, and the first D wall portion 34. The partition wall portion 35 has a rectangular flat plate shape. The end faces of the partition wall 35 facing the vertical direction Dv are respectively welded to the first C main plane 330 facing the first D wall 34 side and the first D main plane 340 facing the first C wall 33 side. It is joined. The end surface of the first connection wall portion 16 facing the bow-tail direction Db is a first A main plane 310 facing the first B wall portion 32 side and a first B main plane 320 facing the first A wall portion 31 side. They are joined by welds.

  The second rectangular tube portion 4 is connected to the first rectangular tube portion 3 at the second end portion in the second direction D2. The configuration of the wall portion of the first rectangular tube portion 3 of the second embodiment is different from that of the first embodiment. The second rectangular tube portion 4 includes a second A wall portion (second main wall portion) 41, a second B wall portion 42, a second C wall portion 43, and a second D wall portion 44. ing.

  The second A wall portion 41 is one of a plurality of wall portions that form the second rectangular tube portion 4. The 2nd A wall part 41 is extended in the 1st direction D1 and the 2nd direction D2 similarly to 1st embodiment. In the second embodiment, only the second A wall portion 41 is the second main wall portion of the second rectangular tube portion 4. The second A wall portion 41 is formed in a pair so that the second A main plane 410 facing the bow-tail direction Db is parallel to the first A main plane 310 and is disposed at the same position in the bow-tail direction Db. . One of the second A main planes 410 of the pair forms one of the side surfaces of the second rectangular tube portion 4. The second A main plane 410 has a trapezoidal shape that is long in the second direction D2.

  The 2nd A wall part 41 is a part of 1st main member formed with the one plate member which makes the 1st A wall part 31 and integral shape similarly to 1st embodiment. In the second embodiment, the first main member is only one constituted by the first A wall portion 31 and the second A wall portion 41.

  The second B wall portion 42 is one of a plurality of wall portions that form the second rectangular tube portion 4. The 2nd B wall part 42 is extended in the 1st direction D1 and the 2nd direction D2 similarly to 1st embodiment. The second A wall portion 41 is disposed away from the bow-tail direction Db. Unlike the first embodiment, the second B wall portion 42 does not form an integral shape with the first B wall portion 32. That is, the 2nd B wall part 42 is provided independently as one flat plate member.

  The second B wall portion 42 is formed with a pair of second B main planes 420 facing the bow-tail direction Db. That is, one of the pair of second B main planes 420 faces the side opposite to the fore-and-aft direction Db with respect to the side surface formed by the second A main plane 410 among the side surfaces of the second rectangular tube portion 4. It forms the side. The second B main plane 420 has a trapezoidal shape that is long in the second direction D2. The second B wall portion 42 is joined to the first B wall portion 32 by a welded portion.

  The second C wall portion 43 is one of the plurality of wall portions of the second rectangular tube portion 4. The second C wall portion 43 is formed with a pair of second C main planes 430 facing in a direction orthogonal to the second direction D2 and the fore / aft direction Db. The second C wall portion 43 has a rectangular flat plate shape. That is, the second C main plane 430 has a rectangular shape whose longitudinal direction is the second direction D2. One of the pair of second C main planes 430 forms a side surface facing the outside of the second rectangular tube portion 4.

  The second C wall portion 43 is joined to the second A wall portion 41 and the second B wall portion 42 by welding portions at both ends in the bow-tail direction Db. The end portion of the second C wall portion 43 on the first square tube portion 3 side in the second direction D2 is directly joined to the first D wall portion 34 by a welded portion without interposing other members.

  The second D wall portion 44 is one of the plurality of wall portions of the second rectangular tube portion 4. The second D wall portion 44 is formed with a pair of second D main planes 440 that face the same direction as the second C main plane 430. The second D wall 44 has a rectangular flat plate shape shorter than the first C wall 33. That is, the second D main plane 440 has a rectangular shape whose longitudinal direction is the second direction D2. One of the pair of second D main planes 440 forms a side surface facing the first D wall portion 34 of the second rectangular tube portion 4.

  The second D wall portion 44 is joined to the second A wall portion 41 and the second B wall portion 42 by welding portions at both ends in the bow-tail direction Db. The end portion of the second D wall portion 44 on the first square tube portion 3 side in the second direction D2 is directly joined to the first D wall portion 34 by a welded portion without interposing other members.

  The third triangular cylinder portion 5 has a rectangular tube shape and extends in the third direction D3. The third triangular cylinder portion 5 has a rectangular cross section and is constituted by four wall portions. The third triangular tube portion 5 has the same cross-sectional shape as the second square tube portion 4. That is, the 3rd triangular cylinder part 5 has comprised the square cylinder shape which has four side surfaces. As for the 3rd triangular cylinder part 5, the 1st edge part of the 3rd direction D3 is open | released. A second stay member is joined to the first end of the third triangular cylinder portion 5 in the third direction D3 by a weld. The 3rd triangular cylinder part 5 is connected with the 1st square cylinder part 3 in the 2nd end part of the 3rd direction D3. The third triangular cylinder part 5 of the present embodiment includes a third A wall part (third main wall part) 51, a third B wall part 52, a third C wall part 53, a third D wall part 54, have.

  The third A wall portion 51 is one of a plurality of wall portions that form the third triangular tube portion 5. The third A wall portion 51 extends in the first direction D1 and the third direction D3. The third A wall portion 51 is formed in a pair such that the third A main plane 510 facing the vertical direction Dv is parallel to the first C main plane 330 and arranged at the same position in the vertical direction Dv. One of the third A main planes 510 of the pair forms one of the side surfaces of the third triangular tube portion 5. The third A main plane 510 has a trapezoidal shape that is long in the third direction D3.

  The third A wall portion 51 is a part of the second main member formed of one plate member that is integrally formed with the first C wall portion 33. That is, the third A wall portion 51 and the first C wall portion 33 are connected without a seam such as a welded portion. Accordingly, the third A wall 51 and the first C wall 33 form a Y-shaped plane in which the third A main plane 510 and the first C main plane 330 are seamlessly continuous. The third A wall portion 51 has a bent portion formed between the first C wall portion 33 and the first A wall portion 31 and continues to the second A wall portion 41. In other words, not only the third A main plane 510 and the first C main plane 330 but also the first A main plane 310 and the second A main plane 410 form a continuous plane. That is, the 1st main member and the 2nd main member are connected by the bending part, and it is the bending member formed with the one board member which makes an integral shape.

  In addition, a 1st main member and a 2nd main member are not limited to the structure connected by a bending part like this embodiment. For example, the first main member and the second main member may be separate members and may be joined by a weld.

  The third B wall portion 52 is one of a plurality of wall portions that form the third triangular tube portion 5. The third B wall portion 52 extends in the first direction D1 and the third direction D3. The third B wall 52 is disposed away from the third A wall 51 in the vertical direction Dv. The third B wall 52 is formed with a pair of third B main planes 520 facing the vertical direction Dv. That is, one of the pair of third B main planes 520 has a side surface facing the opposite side of the vertical direction Dv with respect to the side surface formed by the third A main plane 510 among the side surfaces of the third triangular cylinder part 5. Forming. The third B main plane 520 has a trapezoidal shape that is long in the third direction D3. The third B wall 52 is joined to the first B wall 32 by a weld.

  The third C wall portion 53 intersects and is connected to the third A wall portion 51 and the third B wall portion 52. The third C wall portion 53 extends in the third direction D3 and the vertical direction Dv. The third C wall portion 53 is one of the plurality of wall portions of the third triangular tube portion 5. The third C wall portion 53 of the present embodiment is disposed so as to be orthogonal to the third A wall portion 51 and the third B wall portion 52. The 3rd C wall part 53 is arrange | positioned so that the angle made with the 1st B wall part 32 may become an obtuse angle. The third C wall portion 53 is formed with a pair of third C main planes 530 facing the direction orthogonal to the third direction D3 and the vertical direction Dv. The third C wall portion 53 has a rectangular flat plate shape. That is, the third C main plane 530 has a rectangular shape whose longitudinal direction is the third direction D3. One of the pair of third C main planes 530 forms a side surface facing the outside of the third triangular tube portion 5.

  The third C wall portion 53 is joined to the third A wall portion 51 and the third B wall portion 52 by welding portions at both ends in the vertical direction Dv. The end portion of the third C wall portion 53 on the first square tube portion 3 side in the third direction D3 is directly joined to the first B wall portion 32 by a welded portion without interposing other members.

  The third D wall portion 54 intersects and is connected to the third A wall portion 51 and the third B wall portion 52. The third D wall portion 54 extends in the third direction D3 and the vertical direction Dv. The third D wall portion 54 is one of the plurality of wall portions of the third triangular tube portion 5. The third D wall portion 54 of the present embodiment is disposed so as to be orthogonal to the third A wall portion 51 and the third B wall portion 52. The third D wall portion 54 is disposed away from the third C wall portion 53 in a direction orthogonal to the third direction D3. The third D wall portion 54 is disposed so that the angle formed with the first B wall portion 32 is an acute angle. The third D wall portion 54 is formed with a pair of third D main planes 540 that face the same direction as the third C main plane 530. The third D wall portion 54 has a rectangular flat plate shape shorter than the third C wall portion 53. That is, the third D main plane 540 has a rectangular shape whose longitudinal direction is the third direction D3. One of the pair of third D main planes 540 forms a side surface facing the first B wall portion 32 of the third triangular tube portion 5.

  The third D wall portion 54 is joined to the third A wall portion 51 and the third B wall portion 52 by welding portions at both ends in the vertical direction Dv. The end of the third D wall portion 54 on the first square tube portion 3 side in the third direction D3 is directly joined to the first B wall portion 32 by a welded portion without interposing other members.

  According to the coupling member 60 of the second embodiment, not only the first A wall portion 31 and the second A wall portion 41 but also the first C wall portion 33 and the third A wall portion 51 are not welded. It is formed as a second main member which is a single continuous flat plate. As a result, the number of welds provided between the member extending in the first direction D1 and the member extending in the second direction D2 as well as the member extending in the third direction D3 can be reduced. Not only the first square tube portion 3 and the second square tube portion 4 but also one side surface of the first square tube portion 3 and the third triangular tube portion 5 is integrally formed without being welded, so that it is rigidly continuous. In addition, stress concentration is less likely to occur between the first rectangular tube portion 3 and the third triangular tube portion 5. Thereby, the fatigue strength between the 1st square cylinder part 3 and the 3rd triangular cylinder part 5 can be improved, and the fatigue strength as the coupling member 60 can be improved more.

  Moreover, the 1st A wall part 31 and the 2nd A wall part 41 which were formed as one continuous flat plate without a seam, and the 1st C wall part 33 similarly formed as one continuous flat board without a seam And the 3rd A wall part 51 is connected by the bending part. Therefore, a seamless structure can be obtained from the first A wall portion 31 to the third A wall portion 51 via the second A wall portion 41 and the first C wall portion 33. Therefore, the number of welds can be reduced. The first A wall portion 31 and the first C wall portion 33 are rigidly continuous, and stress concentration is less likely to occur at the corners of the first rectangular tube portion 3. Thereby, the fatigue strength as the 1st square cylinder part 3 can be improved, and the fatigue strength as the coupling member 60 can be improved more.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the configurations and combinations of the embodiments in the embodiments are examples, and the addition and omission of configurations are within the scope not departing from the gist of the present invention. , Substitutions, and other changes are possible. Further, the present invention is not limited by the embodiments, and is limited only by the scope of the claims.

  In addition, the yard part 40 is not limited to the structure comprised by two members like this embodiment, You may be comprised by three or more members.

  Moreover, the stay part 50 is not limited to the structure comprised by one member like this embodiment, You may be comprised by the some member.

  Moreover, in 2nd embodiment, the 1st B wall part 32 and the 2nd B wall part 42 may be formed as a 1st main member which makes integral shape similarly to 1st embodiment.

DESCRIPTION OF SYMBOLS 100 ... Vessel 10 ... Main hull 20 ... Mast 30 ... Main mast part 40 ... Yard part 4a ... First yard member 4b ... Second yard member 50 ... Stay part 5a ... Stay member 6, 60 ... Joint member D1 ... First Direction D2 ... Second direction Dv ... Vertical direction Dh ... Horizontal direction Db ... Stern direction 1, 3 ... First square tube part 11, 31 ... First A wall part 110, 310 ... First A main plane 12, 32 ... First B wall 120, 320 ... First B main plane 13, 33 ... First C wall 130, 330 ... First C main plane 14, 34 ... First D wall 140, 340 ... First D main plane DESCRIPTION OF SYMBOLS 15 ... 1st E wall part 150 ... 1st E main plane 16 ... 1st connection wall part 160 ... 1st connection board surface 17 ... 2nd connection wall part 170 ... 2nd connection board surface 2, 4 ... 2nd square tube Part 21, 41 ... Second A wall part 210, 410 ... Second A main Plane 22, 42 ... second B wall 220, 420 ... second B main plane 23, 43 ... second C wall 230, 430 ... second C main plane 24, 44 ... second D wall 240, 440 ... 2nd D main plane D3 ... 3rd direction 35 ... Partition part 350 ... 1st partition surface 5 ... 3rd triangular cylinder part 51 ... 3rd A wall part 510 ... 3rd A main plane 52 ... 3rd B wall part 520 ... 1st Third B main plane 53 ... Third C wall 530 ... Third C main plane 54 ... Third D wall 540 ... Third D main plane

Claims (6)

A first rectangular tube portion extending in the first direction in a rectangular tube shape;
A square tube that extends in a second direction intersecting the first direction and is connected to the first square tube portion; and a second square tube portion,
The first square tube portion has a first main wall portion extending in the first direction and the second direction,
The second rectangular tube portion has a second main wall portion extending in the same direction as the first main wall portion,
The coupling member which is a 1st main member in which said 1st main wall part and said 2nd main wall part were formed with the one plate member which makes integral shape. The first square tube portion is disposed at a position closest to the second square tube portion, extends in the first direction, and is connected to intersect with the first main wall portion. Have
The second rectangular tube portion has a second sub-wall portion connected to intersect with the second main wall portion and extending in the second direction,
The take according to claim 1, further comprising a connecting portion that is disposed between the first adjacent subwall portion and the second subwall portion and connects the first adjacent subwall portion and the second subwall portion. Joint material. A rectangular tube that extends in a third direction intersecting the first direction and the second direction in a square tube shape, and includes a third triangular tube portion connected to the first square tube portion;
The first square tube portion is disposed at a position farthest from the second square tube portion, extends in the first direction, and is connected to intersect with the first main wall portion. Part
The third triangular tube portion has a third main wall portion extending in the same direction as the first remote sub-wall portion,
The coupling member according to claim 1 or 2, wherein the first remote sub-wall portion and the third main wall portion are a second main member formed of a single plate member having an integral shape.   The coupling member according to claim 3, wherein the first main member and the second main member are bent members formed by one plate member that is connected by a bending portion and forms an integral shape. The coupling member according to any one of claims 1 to 4,
A first square member connected to the first end of the first square tube portion in the first direction and extending in the first direction in a square tube shape;
A second square member connected to the second end portion of the first square tube portion in the first direction and extending in the first direction in a square tube shape;
A mast comprising a first triangular member connected to a first end portion in the second direction of the second rectangular tube portion and extending in the second direction in a rectangular tube shape.   A ship provided with a main hull provided with the mast according to claim 5.

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