JPS63149289A - Ship propelling device - Google Patents

Abstract

PURPOSE:To make it possible to dispense with a drive power source, by providing a plurality of air-foil shape thrust producing plates which are rotatably about rotary axes, on a frame which is coupled to the lower body of a hull, underwater, through the intermediary of support columns, thereby the vertical, longitudinal and lateral motions of the hull due to waves are turned into thrust power. CONSTITUTION:A plurality of air-foil shape thrust producing plates which are arranged rotatably about rotary axes 2, are attached to a frame 4 that is supported underwater to the lower section of a hull 6 through the intermediary of support columns 5. Stoppers 3 are provided for preventing the thrust producing plates from rotating in excess of a predetermined angle in the vertical direction. When the hull is subjected to the vertical, longitudinal and lateral motions due to waves or the like, the plurality of thrust producing plates are also subjected to similar motions through the support columns 5 so as to produce thrust. With this arrangement, it is possible to obtain thrust with no special drive power source being provided.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a ship propulsion device that utilizes the power of waves.

[Conventional technology]

Conventional ships obtain propulsion by rotating a screw with an engine, by rowing an oar or paddle by a person, and by harnessing the power of the wind like a sailing ship.

[Problem that the invention seeks to solve]

Conventional technology has the problem of relying on firepower or human power, except for sailing ships.

[Summary of the invention]

This invention was made to solve the above problems, and focuses on the power of waves that exist in nature, and uses a mechanism for obtaining propulsion from a thrust generation plate that is linked to the ship's body shaking due to the waves. This is what we are trying to provide.

〔Example〕

An embodiment of the present invention will be explained based on FIGS. 1 to 6. FIG. 1 is a diagram showing the configuration of the embodiment.

In the figure, l is a thrust generating plate, and the thrust generating plate 1 is connected to a support base 4 by a rotating shaft 2. Reference numeral 3 denotes a stopper that limits the angle and position of rotation of the thrust generating plate 1, and is connected to the support base 4. The support stand 4 supports a plurality of thrust generating plates 1 and a plurality of stoppers 3, and is connected to a hull 6 by a support 5.

Figures 2, 3, and 4 are side views of one thrust generating plate 1 and its vicinity. Figure 2 shows the support stand 4 when it does not move up and down, and Figure 3 shows the support stand 4. FIG. 4 is a diagram showing the state of thrust force generation iδ in water when the support base 4 moves downward.

In the figure, the thrust generating plate 1 has a streamlined shape, and the rear part of the thrust generating plate 1 is made of a material that bends due to the force of the water flow. Further, in FIGS. 3 and 4, the angle formed when the support base 4 and the thrust generating plate 1 intersect at the rotation axis 2 is about 45 degrees.

Based on the above configuration, the operation will be explained next with reference to FIG. 5 and FIG. 6. FIG. 5 and FIG.
, two stoppers 3 in the vicinity, and a side view of the support stand 4, and the left side as viewed from the page is the direction in which the ship is traveling. The figure also shows how when the hull 6 is shaken up and down, back and forth, and left and right due to waves, a force is applied to the thrust generation plate 1 in either the up or down direction, and this force is converted into propulsive force by the thrust generation plate 1. It is shown using the vector of

If we say Ten Thousand Swords and Tod, then Tou,? 'd is the sword birth number 1 [lQ five swords? 'lu.

The following equation is obtained.

Fu = F1u plus F2u
(1) Fd=F1d+F2d
(1°) Here, if the angle between Fu and F1a and between Fd and F1a is θ, then F1a, F1a
The size of is.

1F2ul=IFulcosθ
(2) Receives a reaction force from the force. This force is F1a,
When F1a is set, a linear equation is obtained.

F3u=-ksF2u
(3) A force pvu that makes F1a, F1a parallel to the horizontal plane and coinciding with the ship's traveling direction;
When divided into Fvd and Fu, the force Fru in the opposite direction of Fd, and the vector component force of Frd, F3u = Fvu + Fru
(4) F3d=Fvd+Frd
(4°). Here, since the angle between F1a and Fru and F1a and Fr'd is θ, the sizes of Fvu and Fvd are 1Fvul=lF3ulsinθ
(5) lFvdl=iF3dlsinθ
(5°).Therefore, the magnitudes of Fvu and Fvd are given by Equations (2) and (3).

From (5) and (2'), (3°), )dog, (5°),
We get the following equation.

lFvu l = (ks/2)lFu l s
i n2θ (6)l Fvd
l = (ks/2) l Fd l s i n2
θ (6°) Furthermore, the water flow shown in the figure is generated when viewed from the thrust generating plate 1, and the thrust generating plate 1 receives forces in the same direction as Fvu and Fvd at its rear. Let these forces be F1a and F1a, and the propulsive forces when the forces of Fu and Fd act on the thrust generating plate l be Fevu and Fevd, then their magnitudes are calculated as follows by considering equations (6) and (6°). The formula becomes

1Fevul=IFvu+F4ul=(ks/2)lFuIsin2θ+IF
4ul (7)lFevdl=lFvd×F4dl=(ks/2)lFdl 5in2θ+IF4dl(
7°) Therefore, equations (7) and (7') show that if a vertical force is applied to the thrust generating plate l, a propulsive force is generated, and its magnitude is greatest when θ is 45°. .

Here, θ is equal to the angle of inclination of the surface of the thrust generating plate 1 that receives the reaction from the water with respect to the propulsion direction. Furthermore, as the length of the support 5 is shortened, the water around the thrust generating plate 1 is reduced to the water surface. Since the water waves in the same way as the above, the reaction force of the water applied to the thrust generating plate 1 becomes smaller. This indicates that the constant of proportionality k becomes smaller. Therefore, Equation (7) i7°) can be expressed as It is also shown that when the number of thrust generating plates 1 is changed, the area S changes, thereby making it possible to adjust the propulsive force.

〔Effect of the invention〕

The present invention can obtain the following effects through the configuration and operation described above.

(a) A ship propulsion device that utilizes the power of natural waves,
There is no need to rely on firepower or human power.

As an application, it can be used for leisure vessels such as yachts, rubber boats, fishing boats, etc. It can also be used as a learning material for elementary school students about the properties and power of waves.

[Brief explanation of the drawing]

FIG. 1 shows the I! of a ship propulsion system according to the present invention. Horizontal perspective view, Figure 2 shows one thrust when the support base does not move up and down, Figure 3 shows the thrust when the support base moves up, and Figure 4 shows one thrust when the support base moves down. Side view of the generation plate and its vicinity, Figure 5.
FIG. 6 is a vector diagram of the force acting on the thrust generating plate. In the figure, 1... Thrust generation plate 12...Fv
u2...Rotation axis 13...F
ru3... Stopper 14...
・F4a4... Support stand 15...
・Fd5... ・Strut 16...
・Fld6 ・Hull 17 ・
・・F2a7・・・・・・Angle θ 18・
・ ・ F3a8 ・ ・ Fu
19...Fvd9-=F1u 2
0.-Frdlo-F1a 2l-=l'
4d11・F1a 22...
...Water flow Fig. 1 Fig. 4 Fig. 5 Fig. 6 Fig. 1'I 7

Claims (1)

[Claims] A thrust generation plate with a rotation axis that converts the force of the ship's rocking caused by waves into propulsion force for the ship, a stopper that limits the rotation of the thrust generation plate to an appropriate position and angle, and a plurality of thrust generation plates with a rotation axis. A ship propulsion device characterized by comprising a support stand that supports a plurality of stoppers, and a strut that connects the support stand and the hull.