JP5280299B2 - Ship with hydrofoil - Google Patents

Description

  The present invention relates to a ship provided with a hydrofoil provided at a portion deeper than the bottom of a ship in a hull so that it can be completely submerged in water to obtain upward lift.

  In Patent Documents 1 and 2 as the prior art, the hull is lifted by providing a hydrofoil in a portion deeper than the bottom of the ship in the hull so that it can be completely submerged in water to obtain upward lift. The ship which comprises is described.

  Among them, the technique described in Patent Document 1 supports a horizontal and horizontal rotary shaft on a hull so that one end of the rotary shaft protrudes out of the boat, and the hydrofoil is placed on the outer portion of the rotary shaft. By being fixed, the hydrofoil is moved in the front-rear direction by the rotation of the rotary shaft.

  Further, the technique described in Patent Document 2 is configured such that a flap for increasing / decreasing upward lift in the hydrofoil is provided on the fully submerged hydrofoil.

JP 2001-130478 A JP 08-119183 A

  However, in the technique described in Patent Document 1, since the hydrofoil is fixed to the rotary shaft, the angle of attack for obtaining upward lift in the hydrofoil is determined by the rotation of the rotary shaft. Since the hull lifted by the hydrofoil changes greatly according to the forward / backward movement of the hydrofoil, the hydrofoil is moved back and forth while maintaining the stability of the hull. There is a problem that it cannot be performed smoothly and safely.

  On the other hand, the technique described in Patent Document 2 adjusts the upward lift force of the hydrofoil with a flap provided on the hydrofoil, but not only the structure is complicated by the provision of the flap, There is a problem that the underwater resistance of the hydrofoil increases, and the flap structure described in Patent Document 2 cannot be applied to the case where the hydrofoil moves back and forth.

  An object of the present invention is to provide a technique that can solve these problems.

In order to achieve this technical problem, claim 1
“In a ship with a hydrofoil that is fully submerged in water and is able to obtain upward lift at a part below the bottom of the hull in the hull.
The hydrofoil is supported so as to be able to move back and forth with respect to the hull by a link mechanism having a pair of front and rear link rods. Of the pair of front and rear link rods, a front link rod or a rear link rod is One of the pair of front and rear link rods or the front link shaft is connected to a hollow shaft rotatably supported by the hull so that the hollow shaft can be rotated back and forth or moved up and down. The partial link rod is connected to a rotary shaft that is rotatably inserted into the hollow shaft so as to be pivotally supported by the rotary shaft, and is moved up and down by the rotation of the rotary shaft or is rotated forward and backward. "
It is characterized by that.

Claim 2
“In the first aspect of the present invention, the hollow shaft and the rotating shaft pass through the hull and protrude into the hull, and each of the hollow shaft and the rotating shaft is separately provided in the protruding portion into the hull. An actuator is provided to rotate. "
It is characterized by that.

Claim 3
“In the first or second aspect of the present invention, of the pair of front and rear link rods in the link mechanism, the front link rod or the rear link rod is composed of two left and right link rods, The rear link rod or the front link rod is constituted by a single link rod, and the hollow shaft is composed of two left and right hollow shafts corresponding to both of the two link rods, each of which is a hull. On the other hand, the rotary shaft has a single configuration corresponding to the single link link rod, and both ends of the single rotary shaft are supported by the two hollow shafts. It is supported. "
It is characterized by that.

Claim 4
“In any one of claims 1 to 3, a sealing material is provided between the hollow shaft and the bearing portion and between the hollow shaft and the rotating shaft.”
It is characterized by that.

  In the configuration of claim 1, the fully submerged hydrofoil is supported by a link mechanism so as to be movable in the front-rear direction with respect to the hull, and the hydrofoil is moved back and forth by a hollow shaft or a rotary shaft supported on the hull. While this can be done by rotating the shaft, the angle of attack in the hydrofoil can be adjusted up or down by rotating the rotating shaft or the hollow shaft.

  As a result, the angle of attack of the hydrofoil can be arbitrarily changed during the forward / backward movement of the hydrofoil, so that the lifting of the hull by the hydrofoil varies greatly according to the forward / backward movement of the hydrofoil. Therefore, the hydrofoil can be moved back and forth smoothly and safely while maintaining the stability of the hull.

  Moreover, the hydrofoil is moved back and forth by adjusting the angle and angle of attack of the hydrofoil using a double shaft consisting of a hollow shaft that is pivotally supported by the hull and a rotating shaft that is inserted into the hollow shaft. Compared to the case where both the adjustment of the angle of attack and the angle of attack are performed by two rotating shafts provided separately, the structure becomes simple and a significant reduction in size and weight can be achieved.

  In addition, since the hydrofoil is supported by a link mechanism comprising a pair of front and rear link rods with respect to the hull, both the forward and backward movement of the hydrofoil and the adjustment of the angle of attack can be performed separately. Although it is possible, its structure is simple, it can be reduced in size and weight, and underwater resistance can be reduced.

  In this case, according to claim 2, both the forward and backward movement of the hydrofoil and the adjustment of the angle of attack can be performed easily and accurately from the inside of the ship under the condition that the number of water leakage points into the ship is reduced. it can.

  According to claim 3, the hydrofoil can be supported on the hull at three points in a triangular arrangement with a small number of three link rods. Can be supported with a posture that reduces the vertical movement (tilt of the left and right ends up and down), that is, a posture that reduces the inclination of the hydrofoil with respect to the hull, and the underwater resistance in the link mechanism can be reduced. This can be further reduced and the weight can be further reduced as compared with the case where four ridges are used to support four points.

  In addition, since the rotating shaft is one and the both left and right ends are supported by both hollow shafts supported by the hull, the rigidity of the rotating shaft can be improved and both the hollow shafts can be improved. The rigidity of the bearing portion with respect to the shaft can be improved.

  Further, according to claim 4, there is an advantage that water leakage into the ship can be more reliably prevented.

1 is a side view of a hull according to an embodiment of the present invention. It is a bottom view of FIG. FIG. 3 is a rear view taken along line III-III in FIG. 1. It is a vertical front view which shows the principal part in embodiment of this invention. FIG. 5 is a VV sectional view of FIG. 4. FIG. 5 is a sectional view taken along line VI-VI in FIG. 4. FIG. 7 is a sectional view taken along line VII-VII in FIG. 4. FIG. 8 is an enlarged sectional view taken along the line VIII-VIII in FIG. 5. It is IX-IX sectional view taken on the line of FIG. FIG. 6 is an enlarged sectional view taken along line XX in FIG. 5. It is XI-XI sectional view taken on the line of FIG. It is a figure which shows another embodiment of the connection part of a link mechanism and a hydrofoil. It is a figure which shows another embodiment of the connection part of a link mechanism and a hydrofoil. It is a perspective view which shows the state of the 1st effect | action in a hydrofoil. FIG. 14 is an enlarged sectional view taken along line XV-XV in FIG. 13. It is a perspective view which shows the state of the 2nd effect | action in a hydrofoil. It is a perspective view which shows the state of the 3rd effect | action in a hydrofoil.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In these drawings, reference numeral 1 denotes a hull used for, for example, a reinforced synthetic resin (FRB) fishing boat or a boat, and the hull 1 is provided with a cabin 2.

  Further, on the stern side of the hull 1, a pair of left and right propulsion devices (screws) 3a and 3b are provided, and a steering device (not shown) is provided.

  Each of the pair of left and right propulsion devices (screws) 3a and 3b is configured to be independently rotated by two engines 4a and 4b mounted on the rear portion of the hull 1. The engine can be configured to be driven separately and independently.

  Reference numeral 5 denotes a fully submerged hydrofoil disposed at a position that is appropriately deeper than the bottom surface 6 of the hull 1 by a dimension (W).

  The hydrofoil 5 is made of an elastic plate that can be elastically bent and deformed, such as a metal plate or a hard synthetic resin plate, and has an airfoil cross-sectional shape. In the bottom view (plan view), the hull 1 is located at the center portion on the center line 7 in the front-rear direction and extends left and right from this portion, and is completely submerged in water. The hull 1 is provided with an angle of attack (α) for advancing as indicated by a white arrow (A), and the hull 1 is lifted when the hull 1 moves forward as indicated by a white arrow (A). Such an upward lifting force (F) can be obtained.

  Further, the hydrofoil 5 is positioned in the hull 1 at a position immediately below or near the center of gravity (G) of the hull 1 by a moving device 8 described in detail below. Is supported so that it can reciprocate back and forth between a rear position (a position indicated by a solid line) and a front position (a position indicated by a two-dot chain line) separated by a distance (L) in front of the rear position. .

  The moving device 8 is configured as shown in FIGS.

  That is, the moving device 8 includes a bearing box body 9 disposed at the bottom of the hull 1, a rotating shaft 10 supported by the bearing box body 9, and the hydrofoil 5 with respect to the rotating shaft 10. A link mechanism 11 that supports the front and rear, a forward and backward movement actuator 12 for moving the hydrofoil 5 forward and backward by rotating the rotating shaft 10 forward and backward, and an angle of attack (α) in the hydrofoil 5 to increase and decrease. Are formed by a pair of left and right angle-of-attack actuators 13a and 13b.

  The bearing box body 9 has a box-shaped configuration with only the lower surface opened, and a plurality of bolts 15 are formed on the upper surface of the bottom plate 6a of the hull 1 so as to close the opening holes 14 formed in the bottom plate 6a. It is attached detachably with.

  On the other hand, the rotary shaft 10 extends in a horizontal direction perpendicular to the center line 7 in the front-rear direction of the hull 1, and a pair of left and right hollow shafts 16a and 16b are freely rotatable at both ends. The hollow shafts 16a and 16b are fitted and are rotatably supported by bearing portions 17a and 17b provided on the left and right side plates 9a and 9b of the bearing box body 9, respectively. Further, both ends of the rotary shaft 10 are rotatably supported by the hollow shafts 16a and 16b.

  Both the left and right ends of each of the hollow shafts 16a and 16b protrude outside the bearing portions 17a and 17b, that is, inside the ship outside the bearing box body 9, and inside the bearing portions 17a and 17b. In other words, the right end 10a and the left end 10b of the rotating shaft 10 protrude further to the inner side of the hollow shafts 16a and 16b than the protruding ends to the inner side of the boat while projecting to the outer side of the bearing box body 9. ing.

  Rotating arms 18a and 18b extending upward are fixed to the right end 10a and the left end 10b of the rotating shaft 10 so as to rotate together with the rotating shaft 10, and between the rotating arms 18a and 18b, , And are integrally connected by a transverse member 19 configured to straddle the bearing box body 9.

  Further, at each of the projecting ends of the hollow shafts 16a and 16b into the bearing box body 9 (that is, the outside of the ship), angle-of-attack arms 20a and 20b extending forwardly are provided on the hollow shafts 16a and 16b. , 16b, and a rotating arm extending upwardly at each of the projecting ends of the hollow shafts 16a, 16b to the outside of the bearing box body 9 (that is, inside the ship). 21a and 21b are fixed so as to rotate together with the hollow shafts 16a and 16b.

  Between the outer periphery of the rotary shaft 10 and the inner periphery of the hollow shafts 16a and 16b fitted to the rotary shaft 10 and between the outer periphery of the hollow shafts 16a and 16b and the bearing portions 17a and 17b, As shown in FIG. 7, sealing ring bodies 22 and 23 such as O-rings are provided, and water inside the bearing box body 9 (outside of the ship) is outside the bearing box body 9 (inside of the ship). Entry is prevented by the sealing ring bodies 22 and 23.

  The link mechanism 11 includes a first link rod 24 disposed on a portion of the hull 1 on the center line 7 in the front-rear direction, and a pair of left and right second links disposed on both sides of the center line 7. The link rods 25a and 25b are configured.

  An upper end of the first link rod 24 is fixed to a portion of the rotating shaft 10 on the inner side (outside of the ship) of the bearing box body 9 so as to rotate together with the rotating shaft 10. A lower end of the first link rod 24 is rotatably connected to a rear end portion of the hydrofoil 5 by pivoting with a rear pin 26.

  As shown in FIGS. 8 and 9, the rear pin 26 extends in the horizontal direction perpendicular to the center line 7 in the front-rear direction, like the rotary shaft 10. For example, the rear pin 26 penetrates the first link rod 24. Both ends thereof are rotatably supported by the hydrofoil 5 and a bearing plate 34 detachably attached to the hydrofoil 5 by a plurality of screws 33 or the like.

  On the other hand, the upper ends of the second link rods 25a, 25b are rotatably connected to the tips of the arms for attacking angles 20a, 20b by pivots with pins 27a, 27b. Each of the lower ends of 25a and 25b is rotatably connected to the left and right sides of the front end of the hydrofoil 5 by pivoting with front pins 28a and 28b.

  As shown in FIGS. 10 and 11, the front pins 28a and 28b extend in the horizontal direction perpendicular to the center line 7 in the front-rear direction, as in the case of the rotary shaft 10, for example, the second link. The rods 25a and 25b are penetrated, and both ends thereof are rotatably supported by the hydrofoil 5 and a bearing plate 36 detachably attached to the hydrofoil 5 by a plurality of screws 35 or the like.

  As a result, the hydrofoil 5 is positioned directly below the front and rear center of gravity (G) in the hull 1 as the first link rod 24 rotates in the front-rear direction by the forward and reverse rotation of the rotary shaft 10. Alternatively, a round trip is made between a rear position (a position indicated by a solid line) located immediately below the center of gravity (G) and a front position (a position indicated by a two-dot chain line) appropriately spaced a distance (L) ahead of this position. Then, it is configured to be moved back and forth.

  In this case, the link mechanism 11 makes the length dimension of the first link rod 24 the same as the length dimension of both the second link rods 25a and 25b, while the rear pin 26 and the both front pins 28a. , 28b, and the arm radius dimension (S2) of the arms for both angles of attack 20a, 20b are made the same so that they always form a parallelogram. The mechanism is configured.

  The first link rod 24 and the amount second link rods 25a, 25b are made of thin plates parallel to the forward direction indicated by the hollow arrow (A) in the hull 1, and the cross section thereof reduces the underwater resistance. It is configured in a streamlined manner.

  As shown in the figure, the forward / backward actuator 12 is in the form of, for example, a hydraulically or pneumatically operated return cylinder, and is provided with a bracket 29 provided so as to protrude forward on the outside (inboard side) of the bearing box body 9. Is provided between the pin 30 and the lateral member 19, and the rotary shaft 10 is rotated forward and backward by the operation of the forward / backward movement actuator 12. The forward / backward movement actuator 12 can be in the form of an electric motor or the like instead of being in the form of a cylinder.

  Further, as shown in the drawing, the actuators 13a and 13b for both angles of attack are in the form of a return type cylinder by, for example, hydraulic or pneumatic pressure, and protrude rearwardly outside the bearing box body 9 (inside the ship). Are provided between the pins 32a and 32b of the brackets 31a and 31b provided on the rotary shafts 21 and the rotating arms 21a and 21b of the hollow shafts 16a and 16b, and the actuator 13a on the right side of the actuators 13a and 13b is operated. When the right hollow shaft 16a is rotated forward and reverse, the right second link rod 25a moves up and down. When the left actuator 13b is operated to rotate the left hollow shaft 16b forward and reverse, the left second link rod 25b is It is configured to move up and down. It should be noted that the actuators 13a and 13b for both angles of attack can also be in the form of an electric motor or the like instead of being in the form of a cylinder.

  In the above-described configuration, the hydrofoil 5 rotates the rotating shaft 10 in the moving device 8 forward and backward by the operation of the forward / backward actuator 12, thereby causing the link mechanism 11 to move the rear position indicated by the solid line in FIG. Are moved back and forth between the front position indicated by the two-dot chain line.

  When the hydrofoil 5 is in the rear position indicated by the solid line in the figure, the upward lift (F) obtained by the hydrofoil 5 acts upward at or near the center of gravity (G) of the hull 1. The entire hull 1 (the bow side and the stern side) is lifted.

  On the other hand, when the hydrofoil 5 is in the front position indicated by a two-dot chain line in the figure, the upward lift (F) obtained by the hydrofoil 5 acts upward from the center of gravity (G) of the hull 1. Therefore, the front part (bow side) of the hull 1 is lifted positively except for the rear part (stern side).

  Therefore, the hydrofoil 5 is in the rear position indicated by the solid line in the figure when the speed is low, while the front position indicated by the two-dot chain line in the figure when the speed is high. By configuring as described above, the whole hull 1 (the bow side and the stern side) is lifted at low speed, so that the propulsion resistance at low speed can be lowered, while at high speed, the hull 1 Since the front part (the bow side) is lifted positively as shown by the two-dot chain line in FIG. 1, the propulsion resistance at high speed can be lowered while maintaining the stability of the hull 1. it can.

  Further, as described above, the link mechanism 11 for supporting the hydrofoil 5 so as to be movable back and forth with respect to the hull 1 is configured as a parallel movement link mechanism that always forms a parallelogram. The angle of attack (α) of the hydrofoil 5 can be kept substantially constant with almost no change between when the hydrofoil 5 is in the rear position and when it is in the front position, in other words, the angle of attack It can be reduced that (α) changes during the forward and backward movement.

  As a result, it is possible to reduce the upward lift of the hydrofoil 5 with respect to the hull 1 during the forward and backward movement of the hydrofoil 5. As a result, the hydrofoil 5 can be changed in the upward lift with respect to the hull 1. Since the hydrofoil 5 can move back and forth in a small state, the hydrofoil 5 can be moved back and forth smoothly and safely with the hull 1 kept stable.

  In this case, the link mechanism 11 for supporting the hydrofoil 5 with respect to the hull 1 includes three first link rods 24 at the center and two second link rods 25a and 25b on the left and right sides. , And the hydrofoil 5 is supported at three points in a triangular array having one vertex on the center line 7, so that the hydrofoil 5 is reduced in number, That is, the three link rods 24, 25a, 25b can be reliably held in a posture in which the vertical movement relative to the hull 1 at the left and right ends of the hydrofoil 5 is reduced.

  As a result, the hydrofoil 5 is viewed from the direction of the center line 7 in the front-rear direction with the link mechanism 11 composed of three link rods 24, 25a, 25b with respect to the hull 1. The underwater resistance in the link mechanism 11 is configured to be a four-point support with four link rods, while it can be surely supported in a posture in which the vertical inclinations of the left and right ends of 5 are reduced. In some cases, it can be greatly reduced and the weight can be reduced.

  Next, in the above-described configuration, both the hollow shafts 16a and 16b in the moving device 8 are rotated forward and backward by the same rotation angle in the same direction at the same time by the operation of the actuators 13a and 13b for the respective shafts. 14 and 15, the second link rods 25a and 25b move up and down at the same distance in the same direction at the same time as shown by the two-dot chain line arrows or the dotted line arrows in FIG. 14 and FIG. As shown by the two-dot chain line and the dotted line, the angle of attack (α) in the hydrofoil 5 is adjusted up and down because it pivots up and down around the rear pin 26 with respect to the first link rod 24. Can do.

  As a result, the amount by which the hull 1 is lifted by the hydrofoil 5 can be arbitrarily adjusted by adopting a configuration in which the hydrofoil 5 is not provided with a flap.

  In the above-described configuration, when the right hollow shaft 16a, for example, of the hollow shafts 16a and 16b is rotated forward and backward by the operation of the actuator 13a with respect to the hollow shaft 16a, both the second link rods 25a and 25b are provided. The right second link rod 25a moves up and down as shown by a two-dot chain arrow or a dotted arrow in FIG. 16, so that the right half (right side) portion 5a of the hydrofoil 5 is As shown by the two-dot chain line or the dotted line, the angle of attack (αa) in the right half (right side) portion 5a of the hydrofoil 5 can be adjusted up or down.

  Furthermore, in the above-described configuration, when the hollow shaft 16b on the left side of the hollow shafts 16a and 16b is rotated forward and backward by the operation of the actuator 13b with respect to the hollow shaft 16b, both the second link rods 25a, As the second link rod 25b on the left side of 25b moves up and down as shown by a two-dot chain line arrow or a dotted line arrow in FIG. 17, the left half (left side) portion 5b of the hydrofoil 5 is As shown by the two-dot chain line or the dotted line, the angle of attack (αb) in the left half (left side) portion 5b of the hydrofoil 5 can be increased or decreased.

  In this way, the angle of attack (α) of the hydrofoil 5 can be relatively increased or decreased between the right half (right side) part 5 a and the left half (left side) part 5 b of the hydrofoil 5. In this case, by adjusting the increase and decrease of the left and right angle of attack (αa, αb), as described below, in addition to suppressing rolling in the hull 1, the turning radius in the hull 1 can be reduced.

  That is, when the hull 1 rolls clockwise such that the starboard 1a is lowered and the port 1b is raised as indicated by a solid arrow (B1) in FIG. 3, the right half portion 5a of the hydrofoil 5 is shown. The starboard of the hull 1 by the hydrofoil 5 is adjusted by increasing the angle of attack (αa) at the bottom or by adjusting the angle of attack (αb) at the left half portion 5b of the hydrofoil 5 to be small. Since the lifting of 1a increases or the lifting of the port 1b of the hull 1 by the hydrofoil 5 decreases, this suppresses the rolling of the hull 1 in the direction of the solid arrow B1 (clockwise). it can.

  For rolling in the clockwise direction in the hull 1, the angle of attack (αa) in the right half portion 5a of the hydrofoil 5 is increased and the angle of attack (αb) in the left half portion 5b. Needless to say, it can be configured to simultaneously reduce the size.

  On the other hand, when the hull 1 rolls counterclockwise so that the port 1b is lowered and the starboard 1a is raised as indicated by a dotted arrow (B2) in FIG. By increasing the angle of attack (αb) at 5b or by adjusting the angle of attack (αa) at the right half portion 5a of the hydrofoil 5 to be smaller, Since the lifting of the port 1b increases or the lifting of the starboard 1a of the hull 1 by the hydrofoil 5 decreases, this suppresses the rolling of the hull 1 in the direction of the dotted arrow B2 (counterclockwise). be able to.

  Of course, even when rolling counterclockwise, the angle of attack (αb) in the left half portion 5b of the hydrofoil 5 is increased and the angle of attack (αa) in the right half portion 5a is decreased. Needless to say, it may be configured to simultaneously perform the operation.

  Next, when turning the hull 1 to the right, the angle of attack (αb) in the left half portion (outside of the turn) 5b of the hydrofoil 5 is increased, or the hydrofoil 5 By adjusting the angle of attack (αa) in the right half part (inside of the turn) 5a to be small, the hull 1 is inclined inward in the turning direction so that the starboard 1a is lowered and the portside 1b is raised. Therefore, the radius of the right turn can be reduced.

  When turning the hull 1 to the left, the angle of attack (αa) in the right half portion (outside of the turn) 5 a of the hydrofoil 5 is increased, or the left half of the hydrofoil 5 is left. By adjusting so that the angle of attack (αb) in the part (inside of the turn) 5b is reduced, the hull 1 is inclined inward in the turning direction so that the port side is lowered and the starboard is raised, The left turn radius can be reduced.

  Of course, even during these turnings, the angle of attack (αa) in the right half portion 5a and the angle of attack (αb) in the left half portion 5b of the hydrofoil 5 can be adjusted simultaneously. .

  When turning the hull 1, in addition to operating the hydrofoil 5 as described above, the pair of left and right propulsion units (screws) 3a, 3b with respect to the hull 1 are different in the number of rotations between them. (E.g., the rotational speed of the propulsion unit located outside the turning direction is set to be faster than the rotational speed of the propulsion unit located inside the turning direction, or By making the number slower than the rotational speed of the propulsion device inside the turning direction), the turning radius can be further reduced.

  The hydrofoil 5 is made of an elastic body that can be elastically resisted and deformed, such as a metal plate or a hard synthetic resin plate, so that the right half portion 5a of the hydrofoil 5 is illustrated. 16, or the left half portion 5b of the hydrofoil 5 can be easily twisted as shown in FIG.

  Further, instead of the connecting portion of the first link rod 24 to the hydrofoil 5 in the link mechanism 11 being the rear pin 26 shown in the figure, as shown in FIG. Further, in place of the pair of left and right second link rods 25a and 25b in the link mechanism 11 connected to the hydrofoil 5 instead of the illustrated front pins 28a and 28b, as shown in FIG. By configuring the ball joint 28 ', the right half portion 5a of the hydrofoil 5 is twisted as shown in FIG. 16, or the left half portion 5b of the hydrofoil 5 is shown in FIG. It can be configured so that it can be easily twisted as shown.

  By the way, in the illustrated embodiment described above, the angle-of-attack arms 20a, 20b in both the hollow shafts 16a, 16b of the moving device 8 are directed forward, and one first link rod 24 in the link mechanism 11 is arranged in two. In this case, the two second link rods 25a and 25b are respectively arranged on the rear side of the second link rods 25a and 25b on the front side of the first link rod 24.

  The present invention is not limited to such a configuration, but the angle-of-attack arms 20a and 20b are directed rearward, the first link rod 24 is disposed in front of the second link rods 25a and 25b, and both second link rods 25a are disposed. , 25b can be arranged behind the first link rod 24, respectively.

  In the case of this configuration, the angle of attack (α) in the hydrofoil 5 is adjusted by moving the rear part of the hydrofoil 5 up and down by the second link rods 25a and 25b. Of course, the twisting of each half of the hydrofoil 5 is also performed by the vertical movement of one of the second link rods 25a and 25b.

  In short, in the present invention, the link mechanism 11 is configured to have a pair of front and rear link rods, and the front link rod or the rear link rod of the pair of front and rear link rods is disposed at the center of the left and right. On the other hand, the rear link rod or the front link rod of the pair of front and rear link rods can be configured in two on the left and right.

  Further, in the illustrated embodiment, when the right half (right side) portion 5a and the left half (left side) portion 5b of the hydrofoil 5 are not required to be twisted, that is, When the rolling suppression by the hydrofoil 5 is not performed and the turning radius is not reduced, the second link rods 25a and 25b of the first link rod 24 and the second link rods 25a and 25b are moved by the forward / backward actuator. The structure is such that the hydrofoil 5 is moved back and forth while the first link 24 is moved up and down to adjust the angle of attack (α) of the hydrofoil 5. be able to.

  That is, the back-and-forth movement in the hydrofoil 5 is caused by the rotation of the second link rods 25a and 25b located at the front part of the pair of front and rear link rods 24, 25a and 25b or the first link rod 24 located at the rear part. On the other hand, the angle of attack (α) in the hydrofoil 5 is adjusted at the first link rod 24 located at the rear or the front portion of the pair of front and rear link rods 24, 25a, 25b. The second link rods 25a and 25b can be configured to move up and down.

  In short, according to the present invention, the front link rod or the rear link rod among the pair of front and rear link rods in the link mechanism 11 is constituted by the two left and right link rods 25a and 25b, and the rear portion of the pair of front and rear link rods is arranged. The link rod or the front link rod is configured by a single link rod 24, and the hollow shaft is formed by two left and right hollow shafts 16a and 16b corresponding to the two link rods 25a and 25b of the two configurations. Each of them is pivotally supported by the bearings 17a and 17b with respect to the hull 1, while the rotary shaft 10 is made into one configuration corresponding to the one link rod. Both ends of the rotary shaft 10 are supported by the two hollow shafts 16a and 16b.

1 Hull 2 Cabin 3a, 3b Propulsion machine (screw)
4a, 4b Engine 5 Hydrofoil (α) Angle of attack of hydrofoil 6 Bottom of vessel 7 Centerline of hull front and rear 8 Moving device of hydrofoil 9 Bearing box body 10 Rotating shaft 11 Link mechanism 12 Actuator for forward and backward movement 13a, 13b For angle of attack Actuator 14 Opening hole 16a, 16b Hollow shaft 17a, 17b Bearing portion 18a, 18b Rotating arm 19 Horizontal member 20a, 20b Angle of attack arm 21a, 21b Rotating arm 22, 23 Sealing ring body 24 First link rod (rear link rod) )
25a, 25b Second link rod (front link rod)
26 Rear pin 28a, 28b Front pin 26 ', 28' Ball joint

Claims (4)

In a ship provided with hydrofoil that is fully submerged in water and can obtain upward lift at a part below the bottom of the hull in the hull.
The hydrofoil is supported so as to be able to move back and forth with respect to the hull by a link mechanism having a pair of front and rear link rods. Of the pair of front and rear link rods, a front link rod or a rear link rod is One of the pair of front and rear link rods or the front link shaft is connected to a hollow shaft rotatably supported by the hull so that the hollow shaft can be rotated back and forth or moved up and down. The partial link rod is connected to a rotary shaft that is rotatably inserted in the hollow shaft so as to be pivotally supported by the rotary shaft, and is moved up and down by the rotation of the rotary shaft, or connected to the front and rear. Ship equipped with hydrofoil characterized by.   2. The hollow shaft and the rotating shaft according to claim 1, wherein the hollow shaft and the rotating shaft project through the hull and project into the hull, and the hollow shaft and the rotating shaft rotate separately in the projecting portion into the hull. A marine vessel equipped with hydrofoil, characterized in that an actuator is provided.   3. The front link rod or the rear link rod of the pair of front and rear link rods in the link mechanism according to claim 1 or 2, wherein the front link rod or the rear link rod is composed of two left and right link rods, and the rear portion of the pair of front and rear link rods. The link rod or the front link rod is composed of one link rod, and the hollow shaft is composed of two left and right hollow shafts corresponding to each of the two link rods, each of which is attached to the hull. On the other hand, the rotary shaft has a single configuration corresponding to the single link link rod, and both ends of the single rotary shaft are supported by the two hollow shafts. Ship equipped with hydrofoil characterized by being.   In any one of said Claims 1-3, the sealing material is provided between each of the said hollow shaft and its bearing part, and between the said hollow shaft and the said rotating shaft, It is characterized by the above-mentioned. A ship equipped with a hydrofoil.

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