JP3144008U - Hull stabilizer - Google Patents

Abstract

A hull stabilizer having a plate-like main body attached to a hull so that at least a part of a main surface is in water is provided. The hull stabilizer can easily replace a plate-like main body. .
An attachment portion attached to a hull, and a plate-like main body portion detachably attached to the attachment portion so that the main surface is substantially along the front-rear direction and at least a part of the main surface is in water. A hull stabilizer provided. Since it is possible to freely remove the main body portion from the attachment portion and attach another main body portion to the attachment portion, the plate-like main body portion can be easily replaced.
[Selection] Figure 2

Description

  The present invention relates to a hull stabilizer, and more particularly, to a hull stabilizer having a plate-like main body portion attached to a hull so that at least a part of a main surface thereof exists in water.

  In order to suppress rolling of the hull moving on the water surface, various hull stabilizers having a plate-like main body attached to the hull so that at least a part of the main surface exists in water have been proposed (for example, Patent Documents). 1). Rolling means that the hull rotates around an axis along the front-rear direction when viewed from a person who has boarded the hull with the hull facing forward (for example, a driver of a ship related to the hull). It means moving.

  Patent Document 1 relates to an “auxiliary keel member having a rolling suppression function” (Patent Document 1, paragraph 0005). “In a hydrofoil ship, a keel member of a hull is moved downward from a lower surface of the keel member. A hydrofoil keel structure (Patent Document 1, Claim 1) characterized in that an auxiliary keel member protruding a predetermined depth and extending along the keel member and having a rolling restraining action is fixed. The auxiliary keel member is characterized by comprising a plate-like body located in a vertical plane including the hull center line (Patent Documents 1 and 2) (see also FIG. 4 and the like). .) As a result, “the auxiliary keel member that sticks to the keel member of the hydrofoil hull is fixed to the keel member that protrudes downward from the lower surface of the keel member and extends along the keel member and has a rolling restraining action. In addition, the rolling restraint action is obtained, and the resistance at the time of take-off from boat running to blade running does not increase and take-off performance does not deteriorate. And the hull can be protected against grounding, etc. "(Patent Document 1, Paragraph No. 0007) and" In the keel structure of the hydrofoil of claim 2, the auxiliary keel member is Since it consists of a plate-like body located in a vertical plane including the hull center line, the structure is simple and it is advantageous in terms of production cost. ”(Patent Document 1, paragraph number) It achieves the effect of 008).

Japanese Utility Model Laid-Open No. 5-94091 (paragraph numbers 0001, 0002, 0006 to 0008, 0017, 0019, FIG. 4 etc. in the detailed description of the invention)

  The idea disclosed in the above-mentioned patent document 1 is that “a plate-like auxiliary keel member 36 having a substantially I-shaped cross section located in a plane including the hull center line is provided, and a flange portion 36a at the upper end thereof is provided. Since it is welded and fixed to the lower surface of the keel member 31 (Patent Document 1, Paragraph 0017), as described above, the rolling suppression action, the hull longitudinal strength improvement, and the hull protection against grounding, etc. Although the auxiliary keel member 36 is fixed to the lower surface of the keel member 31 that is a part of the hull by welding or the like, the auxiliary keel member 36 can be replaced from the lower surface of the keel member 31 by replacement. After the member 36 is cut off, a new auxiliary keel member 36 must be welded to the lower surface of the keel member 31, and the replacement work of the auxiliary keel member 36 is difficult. The replacement of the auxiliary keel member 36 is necessary when the auxiliary keel member 36 is damaged or deformed due to grounding or the like, or when it is desired to replace the auxiliary keel member in order to obtain maneuverability suitable for the purpose of use of the ship. .

  Therefore, in the present invention, in a hull stabilizer having a plate-like main body portion attached to the hull so that at least a part of the main surface is in water, a plate-like main body portion (auxiliary keel member 36 in Patent Document 1). It is an object of the present invention to provide a hull stabilizer that can be easily replaced.

The hull stabilizer of the present invention (hereinafter referred to as “the present apparatus”) is mounted so that the main surface is substantially along the front-rear direction and at least a part of the main surface is in water. And a plate-like main body part detachably attached to the part.
This device comprises an attachment part that is attached to the hull, and a plate-like body part that is detachably attached to the attachment part. The body part is removed from the attachment part, and another body part is attached to the attachment part. (The main body part is detachable from the mounting part), so that the plate-shaped main body part can be easily replaced. And the plate-shaped main-body part which comprises this apparatus is arrange | positioned so that at least one part of a main surface may exist in water like the auxiliary | assistant keel member 36 in patent document 1 along a main surface substantially along a front-back direction. Therefore, in addition to suppressing the rolling of the hull, it is possible to protect the hull against grounding and the like.

In the present apparatus, the main body may not be in contact with the hull.
As described above, this device can protect the hull against grounding where the hull collides with the reef (the main body of this device collides with the reef, so that the hull directly collides with the reef. To prevent.). When the main body of the present apparatus collides with a reef, the impact of the collision is applied to the main body. Therefore, if the main body is in contact with the hull, the shock may be transmitted from the main body to the hull and damage the hull. For this reason, even if the impact of the collision is applied to the main body, the main body may not contact the hull so that the impact is not transmitted from the main body to the hull (even if the impact of the collision is applied to the main body, It can prevent or reduce the impact on the hull.)

In this apparatus, the strength of the main body portion may be lower than that of the attachment portion.
As described above, this device prevents the hull from directly colliding with the reef by the main body colliding with the reef, but the mounting portion attached to the hull when the impact of the collision is applied to the main body. Damage to the hull may cause an adverse effect on the hull (for example, a serious safety problem such as inundation of the hull). For this reason, when a main-body part collides with a reef, it is preferable to prevent damage to an attaching part because a main-body part is damaged earlier than an attaching part. That is, with respect to the force applied to the main body portion, the main body portion is configured to have a lower strength than the mounting portion, whereby the main body portion can be damaged earlier than the mounting portion to protect the mounting portion. The force applied to the main body when comparing the strength of the attachment portion and the main body may be a force assumed to be applied to the main body when the main body collides with the reef. When approaching the reef, the front edge of the main body usually collides with the reef, and a force including a component force directed from the front to the rear is applied to the edge. You may make it compare the intensity | strength of an attachment part and a main-body part when the force which faced is applied.

In this apparatus, at least two or more attachment portions may be disposed along the front-rear direction.
The main surface of the plate-shaped main body part is at least partially in water and the main body part is detachably attached to the mounting part so that it is substantially along the front-rear direction, but the main body part fluctuates left and right as the hull moves forward In order to be attached with sufficient strength to prevent the rolling of the hull and to prevent the hull from rolling, there are at least two or more attachment parts (2, 3, 4, 5,. ) May be arranged. In addition, since the operation | work which attaches a mounting part to a hull and the operation | work which attaches a main-body part to an attachment part will become complicated when there are too many numbers of an attaching part, Preferably it is 10 or less, More preferably, it is 7 or less, Most preferably, it is 5 or less.

In this device, the attachment portion is attached to the outer surface of the hull, and restricts movement of the first portion that sandwiches the body portion on both sides in the thickness direction and the first portion of the body portion that is sandwiched between the first portions. And a second portion (hereinafter, referred to as “clamping attachment main device”).
As described above, the attachment portion has the first portion and the second portion attached to the outer surface of the hull, and the first portion is sandwiched between the plate-like main body portions on both sides in the thickness direction (that is, plate-like). The main body is sandwiched between the first and second surfaces of the main surface of the main body by the first portion.) And the movement of the main body sandwiched by the first portion relative to the first portion is the second portion. Since the plate-like main body portion is clamped and attached to the first portion, the main body portion can be reliably and easily attached.

In the case of sandwiching and attaching device, the second part has a rod-like part formed along the line segment, and the insertion part formed in the thickness direction in the main body part and the first part sandwiching the main body part The second portion may restrict movement of the main body portion relative to the first portion by inserting the rod-like portion into the formed insertion hole.
By doing so, the rod-shaped portion formed along the line segment of the second portion is inserted into the main body portion in the thickness direction (between one surface and the other surface of both main surfaces of the plate-shaped main body portion). The insertion hole is formed so as to communicate with each other.), The insertion hole formed in the first part that sandwiches the main body part, and the simple configuration that the main part is sandwiched by the first part. The second part can be easily and reliably restricted from moving relative to the first part.

In the present apparatus, at least a part of the main body may be located in front of the foremost part of the bottom of the hull.
In this way, at least a part of the main body part is located in front of the foremost part of the bottom of the hull, so that the main body collides with the dark reef when the hull is advancing while the hull, which is often the case where grounding occurs, the hull The hull can be well protected by effectively preventing the direct impact on the reef.

  Embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited thereto.

FIG. 1 shows an example of a ship 101 to which a hull stabilizing device (this device) 11 of the present invention is attached (for the sake of easy illustration, things not directly related to this device 11 such as outboard motors and screws are shown. FIG. 2 is an enlarged view of a portion surrounded by a dotted rectangle Q in FIG. 1, and FIG. 3 shows details of a front mounting portion 21 to be described later. FIG. 3 (specifically, FIG. 3A is an enlarged view in a circle C in FIG. 2, and FIG. 3B is a cross-sectional view along DD in FIGS. 2 and 3A). FIG. 4 is an enlarged front view showing a view from the direction of arrow A in FIG. 3A, and FIG. 5 is a detailed view showing a rear mounting portion 51 described later (specifically, FIG. 5A). 2 is an enlarged view in a circle E in FIG. 2, FIG. 5B is a cross-sectional view taken along line FF in FIGS. 2 and 5A, and FIG. G is a cross-sectional view. The apparatus 11 will be described with reference to FIGS. 1 to 6.
In addition, the operator 103 who gets on the ship 101 that floats on the water surface 201 and controls the ship 101 moves forward (the direction in which the ship 101 moves forward when the rudder is turned straight. This is indicated by an arrow K in FIG. ) When viewed from the operator 103, the right is the right and the left is the left, and the rear (opposite direction of the front K) also means the rear when viewed from the operator 103. Further, the upper direction refers to the vertical upward direction (indicated by an arrow M1 in FIG. 1), and the lower direction refers to the vertical downward direction (indicated by an arrow M2 in FIG. 1) (of course, the water surface 201 is a horizontal surface. Therefore, the arrows M1 and M2 are perpendicular to the water surface 201.)

Roughly, the apparatus 11 has a flat main body 81 (here, FRP) attached to the hull 111 such that the main surfaces 83a and 83b are substantially parallel to a vertical plane P existing at the left and right centers of the ship 101. ), A front mounting portion 21 (removably made of metal (for example, stainless steel) except for a packing member 37 described later), and a rear mounting for detachably mounting the main body portion 81 to the hull 111. Part 51 (made of metal (for example, stainless steel) excluding packing member 57 described later).
The main body 81 is formed by a flat plate member having both main surfaces 83a and 83b and having a substantially uniform thickness. The main surfaces 83a and 83b are substantially vertical along the front-rear direction of the ship 101, and the hull 111. (The vertical plane P existing at the center of the left and right of the ship 101 substantially passes the center of the main surfaces 83a and 83b. That is, the three surfaces of the plane P, the main surface 83a, and the main surface 83b are Although they are substantially parallel to each other, the distance between the plane P and the main surface 83a is substantially equal to the distance between the plane P and the main surface 83b). 111 is detachably attached (detailed later).

The front mounting portion 21 is roughly a front mounting main body portion 23, an inner fixture 31 that attaches the front mounting main body portion 23 to the mounting portion insertion hole 112 a of the hull 111, and the front mounting main body portion 23 and the hull 111. And a doughnut-shaped packing member 37 that is watertight and prevents water from entering the attachment portion insertion hole 112a, and an outer fixture 41 that attaches the main body portion 81 to the front attachment main body portion 23.
The front mounting main body 23 has a rod-shaped male screw portion 24 straight along a line segment in which a male screw is threaded on the outer surface and loosely fitted in the mounting portion insertion hole 112a, and along a substantially vertical plane with respect to the line segment. A pair of flat flange portions 25 formed at one end of the male screw portion 24 and a pair of both sides of the flange portion 25 attached so as to be substantially parallel to a surface opposite to the surface to which the male screw portion 24 is attached. Sandwiching plates 26a and 26b (the main surfaces of the sandwiching plates 26a and 26b are substantially parallel to the line segment). In addition, as will be described later, shaft insertion holes 26ah and 26bh into which the shaft portion 43a of the fixing bolt 43 is inserted are formed in the pair of sandwiching plates 26a and 26b, respectively.
An inner fixture 31 for attaching the front attachment main body 23 to the attachment portion insertion hole 112a of the hull 111 and a nut member 33 which is loosely fitted into the attachment portion insertion hole 112a and screwed into a male screw portion 24 whose external surface is threaded. A donut plate-like washer member 35 that is externally fitted to the male screw portion 24 and interposed between the hull 111 and the nut member 33, and the flange portion 25 and the inner fixture 31 have the attachment portion insertion hole 112 a. Since it cannot pass, the front attachment main-body part 23 can be attached to the attachment part insertion hole 112a of the hull 111 by tightening the nut member 33 screwed to the male screw part 24 in the flange part 25 direction.
The donut-shaped packing member 37 has a flexible rubber donut shape, and is inserted in a watertight manner between the flange portion 25 of the front attachment main body portion 23 and the hull 111 to the attachment portion insertion hole 112a. Prevent moisture from entering.
The outer fixture 41 that attaches the main body portion 81 to the front attachment main body portion 23 includes a fixing bolt 43 and a nut member 45 that is screwed into the shaft portion 43 a of the fixing bolt 43. The main body 81 is fitted between the sandwiching plates 26a and 26b, and is drilled in the thickness direction (substantially perpendicular to the main surfaces 83a and 83b) so as to communicate with the main surfaces 83a and 83b of the main body 81. The shaft portion 43a of the fixing bolt 43 is inserted into the provided body mounting hole 83h1 and the shaft insertion holes 26ah, 26bh, and the head 43b of the fixing bolt 43 that cannot pass through the shaft insertion hole 26bh is inserted into the shaft. The shaft portion 43a can securely attach the main body portion 81 to the front mounting main body portion 23 by the nut member 45 that cannot pass through the hole 26ah. In addition, if the nut member 45 screwed to the shaft portion 43a is loosened and removed, and the shaft portion 43a is extracted from the main body mounting hole 83h1, the main body portion 81 can be removed from the front mounting main body portion 23. By using the portion 21, the main body 81 can be attached to and detached from the front mounting main body 23.

The rear mounting portion 51 is roughly arranged between the rear mounting main body portion 53, the inner fixture 61 that attaches the rear mounting main body portion 53 to the mounting portion insertion hole 112 b of the hull 111, and the rear mounting main body portion 53 and the hull 111. And a doughnut-shaped packing member 57 that is watertight and prevents water from entering the mounting portion insertion hole 112b, and an outer fixture 71 that attaches the main body portion 81 to the rear mounting main body portion 53.
The rear mounting main body 53 includes a rod-shaped male screw portion 54 that is straightly fitted along a line segment that is loosely fitted in the fitting portion insertion hole 112b and is threaded with a male screw on the outer surface, and a surface that is substantially perpendicular to the line segment. A pair of flat flange portions 55 formed at one end of the male screw portion 54 and a pair of both sides of the flange portion 55 attached so as to be substantially parallel to a surface opposite to the surface to which the male screw portion 54 is attached. Sandwiching plates 56a and 56b (the main surfaces of the sandwiching plates 56a and 56b are substantially parallel to the line segment). As will be described later, shaft insertion holes 56ah and 56bh into which the shaft portion 73a of the fixing bolt 73 is inserted are formed in the pair of sandwiching plates 56a and 56b, respectively.
An inner fixture 61 that attaches the rear attachment main body 53 to the attachment portion insertion hole 112b of the hull 111 and a nut member 63 that is loosely fitted into the attachment portion insertion hole 112b and is screwed into a male screw portion 54 that is externally threaded with a male screw. A donut plate washer member 65 that is externally fitted to the male screw portion 54 and interposed between the hull 111 and the nut member 63, and the flange portion 55 and the inner fixture 61 have the attachment portion insertion hole 112 b. Since it cannot pass, the rear attachment main body 53 can be attached to the attachment portion insertion hole 112b of the hull 111 by tightening the nut member 63 screwed into the male screw portion 54 in the direction of the flange portion 55.
The donut-shaped packing member 57 has a flexible rubber donut shape, and is inserted in a watertight manner between the flange portion 55 of the rear attachment main body portion 53 and the hull 111 to the attachment portion insertion hole 112b. Prevent moisture from entering.
The outer fixing tool 71 that attaches the main body 81 to the rear mounting main body 53 includes a fixing bolt 73 and a nut member 75 that is screwed into the shaft 73 a of the fixing bolt 73. The main body 81 is fitted between the sandwiching plates 56a and 56b, and is drilled in the thickness direction (substantially perpendicular to the main surfaces 83a and 83b) so as to communicate with the main surfaces 83a and 83b of the main body 81. The shaft portion 73a of the fixing bolt 73 is inserted into the main body mounting hole 83h2 and the shaft insertion holes 56ah and 56bh, and the head 73b of the fixing bolt 73 and the shaft insertion which cannot pass through the shaft insertion hole 56bh are inserted. With the nut member 75 that cannot pass through the hole 56ah, the shaft portion 73a can reliably attach the main body portion 81 to the rear mounting main body portion 53. If the nut member 75 screwed to the shaft portion 73a is loosened and removed, and the shaft portion 73a is removed from the main body mounting hole 83h2, the main body portion 81 can be removed from the rear mounting main body portion 53. By using the part 51, the main body 81 can be attached to and detached from the rear mounting main body 53.
As described above, the body portion 81 can be detachably attached to the front attachment body portion 23 by the front attachment portion 21, and the body portion 81 can be attached to and detached from the rear attachment body portion 53 by the rear attachment portion 51. Therefore, the main body part 81 can be freely attached or detached (detachable) by using the front attachment part 21 and the rear attachment part 51 as described above.
In addition, even if it is made to form the rotation stop which prevents co-rotation of the head 43b or the nut member 45 in the clamping plates 26a and 26b, similarly, the clamping plates 56a and 56b have the head 73b or the nut member 75 in the same manner. You may make it form the rotation stopper which prevents co-rotation.

FIG. 7 is a cross-sectional view showing another example of an external fixture for attaching the main body 81 to the rear attachment main body 53. 7 shows the same position as the cross section shown in FIG. 5B, and the shaft insertion holes 56ah and 56bh into which the fixing bolt 73, the nut member 75, and the fixing bolt 73 shown in FIG. 5B are inserted. The other parts are the same as those in FIG. 5B (the same reference numerals as those in FIG. 5B denote the same elements as in FIG. 5B in FIG. 7). The numbers are also given in FIG.
In FIG. 7, a countersunk bolt is used as the fixing bolt 373, and more specifically, a shaft portion 373 a having a substantially right cylindrical shape with a straight line along the longitudinal direction as an axis, and one end of the shaft portion 373 a are formed. A head portion 373b having a substantially right circular truncated cone shape (reducing diameter in the direction of the shaft portion 373a) with the straight line as an axis is integrally provided, and the outer peripheral surface of the shaft portion 373a extends along the longitudinal direction. The male screw is threaded.
The shaft fitting hole 56bh loosely fits the shaft portion 373a and accommodates the head portion 373b (however, the shaft fitting hole 56bh is formed so that the head portion 373b cannot pass through the shaft fitting hole 56bh). It is formed in a shape that can be done. On the other hand, on the inner peripheral surface of the shaft insertion hole 56ah, a female screw that can be screwed with the male screw threaded on the outer peripheral surface of the shaft portion 373a is threaded.
Accordingly, by rotating the fixing bolt 373 with respect to the shaft insertion hole 56ah, the male screw of the shaft portion 373a is screwed into the female screw of the shaft insertion hole 56ah (FIG. 7), or conversely, the shaft portion 373a of the shaft portion 373a. The male screw can be freely taken out (unscrewed) from the female screw of the shaft fitting hole 56ah, and also in this example, the main body 81 can be attached to and detached from the rear mounting main body 53. Can do. In the example of FIG. 7, the nut member 75 used in the example of FIG. 5B is not required, so that it is possible to achieve a reduction in the number of parts and a reduction in manufacturing cost. Further, in the example of FIG. 5B, the head 73b, the nut member 75, and the like protrude outward from the sandwiching plates 56a and 56b, thereby causing water resistance. In the example of FIG. Since there is no water resistance can be reduced.
Further, the use of a countersunk bolt as the fixing bolt as shown in FIG. 7 can be similarly performed in FIG.

  By attaching the present apparatus 11 to the ship 101, it is possible to protect the ship body 111 against grounding and the like in addition to suppressing rolling of the ship body 111. When the main body 81 collides with the reef and the main body 81 is damaged, the damaged main body 81 is removed from the front mounting portion 21 and the rear mounting portion 51, and the new main body 81 is removed from the front mounting portion 21 and the rear mounting portion. It is sufficient to attach to the main body 51, and such a replacement operation of the main body 81 can be performed very easily even by a general person. Even if the main body 81 is not damaged, the main body 81 can be freely replaced according to the maneuverability, the purpose of the ship 101, and the like. Further, by attaching the apparatus 11 to the ship 101, the bow is less likely to be swung from side to side by the wind blowing around, and the ship 101 can be stably operated. In addition, when the ship 101 travels on a water surface with waves, it is possible to reduce splashing caused by the bow colliding with the water surface. By attaching a spanker or a hull turning device (utility model registration No. 3135924) to the ship 101 together with the device 11, the ship 101 can be made to respond quickly to wind during drift fishing.

As described above, the device 11 includes the mounting surface (the front mounting portion 21 and the rear mounting portion 51 here) mounted to the hull 111 and the main surfaces 83a and 83b substantially along the front-rear direction and the main surface 83a. , 83b, and a plate-shaped main body 81 that is detachably attached to the attachment portions (the front attachment portion 21 and the rear attachment portion 51) such that at least a part (here, all) of the portion 83b exists in water. Stabilizer.
Further, in the present apparatus 11, the main body 81 does not contact the hull 111.

And the intensity | strength of the main-body part 81 is lower than an attachment part (front attachment part 21 and back attachment part 51). Specifically, when a force S (refer to FIGS. 1 and 2 in particular) directed from the front to the rear is applied to the front edge 81f (front end portion) of the main body 81, the attachment portion ( The main body part 81 is damaged earlier than the front attachment part 21 and the rear attachment part 51), so that the attachment parts (the front attachment part 21 and the rear attachment part 51) are prevented from being damaged. That is, with respect to the force S applied to the front edge 81f of the main body 81 (force applied to the front edge 81f of the main body 81 when the main body 81 collides with a reef (not shown)), the mounting portion (front Since the strength of the main body 81 is lower than that of the mounting portion 21 and the rear mounting portion 51), the main body 81 is damaged earlier than the mounting portion (the front mounting portion 21 and the rear mounting portion 51). The parts (front mounting part 21 and rear mounting part 51) are protected.
In addition, at least two (two in this case, the front mounting portion 21 and the rear mounting portion 51) of the mounting portions (the front mounting portion 21 and the rear mounting portion 51) are disposed along the front-rear direction.

Attachment portions (front attachment portion 21 and rear attachment portion 51) are attached to the outer surface of the hull 111, and the first portion (the holding plates 26a and 26b of the front attachment body portion 23) that sandwich the body portion 81 on both sides in the thickness direction. , The sandwiching plates 56a and 56b of the rear mounting main body 53) and the main body 81 sandwiched between the first portion (the sandwiching plates 26a and 26b of the front mounting main body 23, the sandwiching plates 56a and 56b of the rear mounting main body 53). A second part (outer fixing tool 41, outer fixing tool 71) for restricting movement with respect to the first part (the holding plates 26a, 26b of the front mounting body part 23, the clamping plates 56a, 56b of the rear mounting body part 53), It has.
And the 2nd part (the outer fixing tool 41, the outer fixing tool 71) is a rod-shaped part (the shaft part 43a of the fixing bolt 43, the shaft part 73a of the fixing bolt 73, and the shaft in FIG. 7 formed along the line segment. Portion 373a), and a fitting hole (main body attachment holes 83h1, 83h2) formed in the thickness direction in the main body portion 81 and a first portion (the holding plate 26a of the front attachment main body portion 23) sandwiching the main body portion 81. , 26b, insertion holes (shaft insertion holes 26ah, 26bh, 56ah, 56bh) formed in the clamping plates 56a, 56b of the rear mounting main body 53, and the rod-shaped portion (the shaft portion 43a of the fixing bolt 43, the fixing bolt). 73, the shaft portion 373a in FIG. 7 is fitted, so that the second portion (the outer fixture 41, the outer fixture 71) is the first portion of the body portion 81 (the front mounting body portion 23). Holding plates 26a and 26b, rear Holding plate 56a of the urging body 53, it restricts the movement relative 56b).
At least a part of the main body 81 is present in front of the foremost part 113a of the ship bottom 113 of the hull 111.

It is a left view which shows the ship to which the hull stabilizer (this apparatus) of an example of this invention was attached. FIG. 2 is an enlarged view of a portion surrounded by a dotted rectangle Q in FIG. 1. Detailed view showing the front mounting portion (FIG. 3A is an enlarged view in a circle C in FIG. 2, and FIG. 3B is a cross-sectional view along DD in FIGS. 2 and 3A). It is. It is an enlarged front view which shows the place seen from the arrow A direction of Fig.3 (a). FIG. 5A is an enlarged view of the circle E in FIG. 2 and FIG. 5B is a cross-sectional view taken along the line FF in FIGS. 2 and 5A. It is. It is GG sectional drawing of Fig.5 (a). It is sectional drawing which shows another example of the external fixing tool which attaches a main-body part to a back attachment main-body part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 This apparatus 21 Front attachment part 23 Front attachment main-body part 24 Male thread part 25 Flange part 26a, 26b Clamping plate 26ah, 26bh Shaft fitting hole 31 Inner fixing tool 33 Nut member 35 Washer member 37 Packing member 41 Outer fixing tool 43 Fixing bolt 43a Shaft portion 43b Head portion 45 Nut member 51 Rear mounting portion 53 Rear mounting main body portion 54 Male screw portion 55 Flange portion 56a, 56b Holding plate 56ah, 56bh Shaft fitting hole 57 Packing member 61 Inner fixing tool 63 Nut member 65 Washer member 71 External fixing Tool 73 Fixing bolt 73a Shaft portion 73b Head portion 75 Nut member 81 Main body portion 81f Front edge 83a, 83b Main surface 83h1, 83h2 Main body mounting hole 101 Ship 103 Pilot 111 Hull 113 Ship bottom 113a Foremost portion 112a, 112b Hole 201 Surface 373 fixing bolt 373a shaft portion 373b head

Claims (7)

A mounting portion attached to the hull;
A plate-like main body part that is detachably attached to the attachment part so that the main surface is substantially along the front-rear direction and at least a part of the main surface exists in water;
A hull stabilization device comprising:     The hull stabilizer according to claim 1, wherein a main body does not contact the hull.     The hull stabilizer according to claim 1 or 2, wherein the strength of the main body portion is lower than that of the attachment portion.     The hull stabilizer according to any one of claims 1 to 3, wherein at least two or more mounting portions are disposed along the front-rear direction.     A first portion that is attached to the outer surface of the hull and sandwiches the main body portion on both sides in the thickness direction; a second portion that restricts movement of the main body portion sandwiched by the first portion relative to the first portion; The hull stabilizer according to any one of claims 1 to 4, comprising: The second part has a rod-like part formed along the line segment,
The rod-shaped portion is inserted into the insertion hole formed in the main body portion in the thickness direction and the insertion hole formed in the first portion sandwiching the main body portion, so that the second portion is the first portion of the main body portion. The hull stabilizer according to claim 5, wherein movement of the hull is restricted.     The hull stabilizer according to any one of claims 1 to 6, wherein at least a part of the main body portion is located in front of a foremost portion of the bottom of the hull.

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