JPH0640558Y2 - Hydrofoil with hinged wings - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a hydrofoil ship, and more particularly to a hydrofoil ship with a hinge blade adapted to reduce a bending moment acting on the hydrofoil.

[Conventional technology]

Conventionally, in hydrofoil ships, as shown in FIG. 6, the hydrofoil 1 is generally supported on the bottom of the ship via fixed strut struts 2, but when the ship is large, the hydrofoil 1 Strut length l is increased. When the inter-strut length 1 is increased in this way, the lift acting on the hydrofoil 1 is increased, and the bending moment is increased accordingly. Further, if the inter-strut length 1 of the hydrofoil 1 becomes long, it becomes impossible to integrally form the blades. Therefore, as shown in FIG. 7, the divided blades are welded on the way.

[Problems to be solved by the device]

By the way, the conventional hydrofoil ship as described above has the following problems.

(1) As the size of the hull increases, the inter-strut length 1 of the hydrofoil 1 also increases, and the bending moment acting on the hydrofoil due to the lift force during high-speed traveling increases. On the contrary,
When the length between hydrofoil supports is reduced and the bending moment is reduced by increasing the number of struts 2 or the like, the increase in struts 2 causes an increase in propulsion resistance, resulting in a decrease in ship speed.

(2) If the length 1 between the struts of the hydrofoil becomes long, it becomes impossible to integrally form the wing. Therefore, it is necessary to weld and join the hydrofoil 1 on the way. However, if this is done, there is a problem that the fatigue strength in the welded portion is reduced, and the blade may be damaged by repeated deformation.

(3) In a catamaran hydrofoil, if the hydrofoil is fixed to the hull in such a way that the left and right hulls are connected to each other, the deviation of the sway of the left and right hulls is directly transmitted to the hydrofoil. It has the disadvantage of producing excessive bending moments.

The present invention is intended to solve these problems, and it is possible to reduce the bending moment acting on the hydrofoil without increasing the number of struts supporting the hydrofoil. The purpose is to provide a wing boat.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the hydrofoil with hinged wings of the present invention has hydrofoils supported on the bottom of the ship via fixed strut struts on the left and right, and the hydrofoils are driven by the lift force during high speed running. In order to absorb the bending moment generated on the wing, it is divided into left and right hydrofoil parts fixed to the left and right fixed strut struts respectively, and a central hydrofoil part interposed between these left and right hydrofoil parts. The adjacent hydrofoil portions are rotatably connected to each other via a hinge mechanism, and the left and right hydrofoil portions and the central hydrofoil portion are arranged in a straight line in the left-right direction when viewed from the front. It is characterized by that.

[Action]

In the above-mentioned hydrofoil with hinged wing of the present invention, a total of two hinge mechanisms, one on the left and one on the right in the middle of the hydrofoil, act to absorb and reduce the bending moment acting on the hydrofoil, In addition to the effect of reducing the bending moment, in the catamaran, these hinge mechanisms act to absorb the deviation of the left and right hull sway.

〔Example〕

Next, an embodiment of the present invention will be described. FIGS. 1 to 4 show a hydrofoil with a hinged wing as one embodiment of the present invention. FIG. 1 is a front view thereof and FIG. 2 is a view thereof. FIG. 3 is an enlarged plan view of the hinge mechanism, FIG. 3 is an enlarged front view of the hinge mechanism, and FIG. 4 is an enlarged sectional view of the hinge mechanism.

As shown in FIG. 1, at the bottom of the catamaran hydrofoil hull 4,
A hydrofoil 1 is provided via a fixed strut strut 2. Hydrofoil 1 consists of three hydrofoil parts in the longitudinal direction of the wing.
It is divided into 1a, 1b and 1c. That is, the hydrofoil 1 is composed of left and right hydrofoil parts 1a and 1c fixed to the left and right fixed strut struts 2 and 2, and a central hydrofoil part interposed between these left and right hydrofoil parts 1a and 1c. Composed of 1b and
These hydrofoil parts 1a, 1b, 1c are arranged in a straight line in the left-right direction when viewed from the front, and the hydrofoil parts adjacent to each other are
1a, 1b, 1c are rotatably connected to each other via a hinge mechanism 5. In this way, the hydrofoil 1 constitutes a hinge vane as a whole.

As shown in FIG. 2, the hinge mechanism 5 is joined to the meshing portions of the hydrofoil portions 1a, 1b or 1b, 1c, which are cut out from each other, by inserting the connecting pin 6 into the hinge portion, and the arrow shown in FIG. Rotational movement in any direction is possible.

As described above, in a hydrofoil ship equipped with a hinged wing formed by connecting the left and right hydrofoil parts 1a, 1b, 1c arranged in a straight line in the left-right direction with hinges 5 and 5, during navigation. When a blade load is applied by the lift generated on the hydrofoil 1, calculation models (A) and (B) corresponding to the embodiment of the present invention shown in FIG. 5 and calculation models (A ′) and (B ′ corresponding to the conventional example. As shown in the characteristic comparison diagram with), when the inter-strut length is l and the wing load is w, the bending moments at the wing center and the strut support are as shown in (C) and (C ′), The maximum bending moment Mmax is On the other hand, in the embodiment of the present invention, And has the effect of significantly reducing Mmax. The distance between hinges in the embodiment of the present invention Is one dimensional example of the range that produces an effect.

[Effect of device]

As described in detail above, according to the present invention, the following effects and advantages can be obtained.

(1) Generated at high speed by two hinge mechanisms 5, 5 that connect the left and right fixed hydrofoil parts 1a, 1c arranged in a straight line in the left-right direction when viewed from the front and the central hydrofoil part 1b The bending moment of the hydrofoil caused by the lifting force is appropriately absorbed and reduced, and the durability of the hydrofoil is improved.

(2) Since the hydrofoil is divided and connected by the above-mentioned two hinge mechanisms 5 and 5 to eliminate the welding joint portion, it is possible to easily process a large hydrofoil and reduce the manufacturing cost.

(3) With the two hinge mechanisms 5 and 5, it is possible to sufficiently absorb the deviation of the left and right hull sway in the case of a catamaran hull,
Unnecessary deformation of hydrofoils will not occur.

[Brief description of drawings]

1 to 4 show a hydrofoil with a hinged wing as an embodiment of the present invention. FIG. 1 is a front view thereof, FIG. 2 is an enlarged plan view of the hinge mechanism thereof, and FIG. FIG. 4 is an enlarged front view of the hinge mechanism, FIG. 4 is an enlarged sectional view of the hinge mechanism, FIG. 5 is a characteristic comparison diagram between the embodiment of the present invention and the conventional example, and FIGS. FIG. 6 is a perspective view and FIG. 7 is a plan view of the hydrofoil of a winged ship. 1 ... hydrofoil, 1a, 1b, 1c ... hydrofoil part, 2 ... struts, 4 ... hydrofoil hull, 5 ... hinge mechanism, 6 ... connecting pin

Claims (1)

[Scope of utility model registration request] 1. A hydrofoil supported by left and right fixed strut struts on the bottom of a hydrofoil, the hydrofoil being designed to absorb a bending moment generated in the hydrofoil by lift during high-speed traveling. , The left and right hydrofoil portions fixed to the left and right fixed strut struts respectively, and the central hydrofoil portion interposed between these left and right hydrofoil portions are divided into adjacent hydrofoil portions. , With hinge wings characterized in that they are rotatably connected to each other through a hinge mechanism, and that the left and right hydrofoil parts and the central hydrofoil part are arranged in a straight line in the left-right direction when viewed from the front. Hydrofoil.