JP2846015B2 - Semi-submersible type catamaran floating ship - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention absorbs the motion of a twin-hull type floating body by combining a monohull with a semi-submersible type twin-hull type floating body via a telescopic cylinder. , So that the attitude of the floating body can be stabilized,
The present invention relates to a semi-submersible catamaran type boat with a floating body, and more particularly to a recreational fishing boat provided with a stable for fishing, a boat suitable as a sightseeing boat or a ferry.

[Conventional technology]

Conventionally, the cabin is separated from the main hull in order to maintain the stability of the cabin's posture, and while maintaining the cabin's load by the main hull, the cabin is maintained in a stable position regardless of the shaking of the main hull due to waves. 2. Description of the Related Art There has been considered a ship in which a hydraulic servo cylinder for vibration absorption control is interposed between a main hull and an expansion / contraction control of the cylinder.

FIG. 4 shows an example of a conventional cabin sway absorption type ship, in which a cabin 02 is separated upward from a main hull 01,
The front and rear guide links 06 are connected to the main hull 01 so that relative movement is possible.

The load in the cabin 02 is supported by a plurality of sets of cabin supporting hydraulic cylinders 03 interposed between the cabin 02 and the main hull 01 and each operated by a hydraulic source of the accumulator 04. The plurality of hydraulic servo cylinders 05 for absorbing and absorbing control interposed between the cabin 02 and the main hull 01 are controlled so that the main hull 01 always keeps a constant posture irrespective of the sway of the waves 07.

[Problems to be solved by the invention]

By the way, in a conventional ship as exemplified in FIG. 4, since the entire load of the cabin 02 (or the fishing platform in the case of a recreational fishing boat) must be supported by the main hull 01, in the case of a small boat, There is no room to support such a large load, and trying to support it with excessive force will impair the stability of the main hull 01.

In addition, it is not easy to modify an existing small boat to support a large load cabin or fishing pedestal, etc., and from the design stage of a small boat, a hull structure suitable for supporting a large load, a cabin, There is a problem that the arrangement of the support device such as the fishing stand and the control device thereof must be folded in advance.

The present invention is intended to solve such a problem, and it is possible to stably hold a catamaran type floating body that can be used for a cabin, a fishing pedestal, etc. by a simple modification even in an existing small boat. It is an object of the present invention to provide a ship with a semi-submersible catamaran floating body.

[Means for solving the problem]

In order to achieve the above object, the semi-submersible catamaran type floating vessel according to the present invention allows the relative movement of the monohull and the monohull while straddling the monohull in the left-right direction. It has a catamaran floating body that is arranged at an interval to the monohull so that the floating body can have struts from both sides of the stabilizer above the monohull and the sides of the stabilizer. A pair of left and right submerged buoyancy bodies immersed in the water through a submersible catamaran type floating body, and a telescopic cylinder that connects the stabilizer and the monohull, A telescopic cylinder control system is provided which is capable of controlling the catamaran type floating body so as to always maintain a stable posture irrespective of the motion of the monohull due to waves.

[Action]

In the above-described ship with a semi-submersible catamaran type floating body according to the present invention, the catamaran floating body generates buoyancy by its own displacement, and the monohull sails with the floating body.

The telescopic cylinder connecting the catamaran-type floating body and the monohull is controlled to expand and contract to maintain the posture of the catamaran-type floating body at a constant and stable posture. By controlling the expansion and contraction of the telescopic cylinder, the twin-body type floating body always keeps a fixed posture.

The floating body is a semi-submersible twin-hull type, which is arranged at intervals so as to allow relative movement while straddling the monohull in the left-right direction, so that the arrangement of the telescopic cylinder is simplified. ,
In addition, relative motion control of the floating body with respect to the monohull by the cylinder is also facilitated. In addition, the semi-submersible floating body has a small cross-sectional area of the water surface penetration portion, so that the semi-submersible floating body does not shake even when the boat is stopped.

〔Example〕

Hereinafter, a ship with a half-submersible catamaran type floating body as one embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 3, the monohull 1 has a steering room 1-1 on the front upper deck, a propulsion unit 1-2 on the stern, and a steering room 1-1. Behind,
A twin-hull type floating body 2 is arranged at a distance from the monohull so as to straddle the monohull 1 in the left-right direction and allow relative movement of the monohull.

The catamaran floating body 2 has a rectangular stabilizer 2-1 which is horizontally held at a distance above the rear upper deck of the monohull 1, and
A pair of struts 3, 3 arranged downward from the left and right sides of the stabilizer 2-1 and spaced apart from the left and right sides of the monohull 1, and a lower end of each strut 3, 3 And a submerged buoyant body 4 and 4 having a streamlined shape in the front-rear direction and immersed in water.

In particular, as shown in FIG. 3, the submerged buoyant body 4, 4 has a large drainage amount, and each strut 3, 3 is formed to be as thin as possible in the left-right direction and has an elongated horizontal cross-sectional shape in the front-rear direction. The entire weight of the twin-hull type floating body 2 is supported by the buoyancy generated by the displacement of the water buoyant bodies 4, 4 and the struts 3, 3. As described above, since the floating body 2 is configured as a semi-submersible catamaran type having a small cross-sectional area of the water surface penetration portion, the swaying due to the waves 10 can be reduced not only at the time of traveling but also at the time of stopping the boat.

Also, as shown in FIG. 2, a monohull 1 and a catamaran floating body 2
A pair of left and right guide rods 9 are pivotally connected between the left and right struts 3, 3 so as to follow the relative movement between the monohull 1 and the catamaran floating body 2. . Each of the guide rods 9 is a semi-restraining mechanism having a front end pivotally supported by the side of the monohull 1 and a rear end pivotally supported by the front end of the catamaran floating body 2. 1 tow the twin-hull type floating body 2 via the guide rod 9.

Further, the monohull 1 has a plurality of telescoping cylinders 5 for controlling the pitching, rolling and vertical movement of the floating body 2 at a position below the stabilizer 2-1 such as a gimbal type support device. The upper end of the piston rod of each of the telescopic cylinders 5 is pivotally attached to the lower side of the stabilizer 2-1.

A telescopic cylinder control system that controls the telescopic cylinder 5 and can always maintain the catamaran type floating body 2 in a stable posture regardless of the motion of the monohull 1 due to waves is provided as described below.

That is, in FIG. 2, the motion of the monohull 1 due to the waves 10 is detected by the motion sensor 6 disposed on the monohull 1, and the motion of the pitch, roll and vertical motion detected by the motion sensor 6 is detected. Each measured value is a monohull 1 or a catamaran floating body 2
Is sent as a data signal to the control operation device 7 disposed in either one of the above. The control operation device 7 performs an operation based on the data signal, and outputs an operation command signal in accordance with the operation result to the monohull 1 or the catamaran. The command is sent as an expansion / contraction command to the hydraulic servo device 8 disposed on one of the mold floating bodies 2. By the operation of the hydraulic servo device 8, a required amount of working fluid is sent to each telescopic cylinder 5 via a required fluid inflow port.
The motion of the monohull 1 is canceled out, and the stabilizer 2-1 expands and contracts so as to keep the horizontal position at a constant level at all times. Is performed even in the case of

The vertical swing amount of the monohull 1 detected by the motion sensor 6 is Z _S , the pitch angle is θ _S , the roll angle is φ _S, and X-rays are taken on the longitudinal center line of the monohull 1, Y in the horizontal direction of the monohull 1
When the axes are taken, the X coordinate of the center of gravity of the monohull 1 is X _G , the X coordinate of the ith telescopic cylinder 5 is X _P (i), and the Y coordinate is Y
_{Assuming that P} (i), the vertical motion value に 対 す る_{S of} the i-th telescopic cylinder 5 calculated by the control calculation device 7
(I) _{is, ζ S (i) = Z} S - {X P (i) -X G} θ S + Y P (i) φ
_S.

Since a command signal for extending / contracting the motion so as to cancel the motion is sent to the i-th telescopic cylinder 5, the signal value と き (i) is given by ξ (i) = − ζ _S (i). Become.

〔The invention's effect〕

As described above in detail, the following effects and advantages can be obtained by the semi-submersible type twin-hull type ship with floating body of the present invention.

(1) Since the catamaran floating body itself has buoyancy, the monohull does not need to support the entire weight of the catamaran floating body,
Monohulls require relatively small hulls.

(2) In the case of using an existing ship as the monohull, there is no effect on the displacement and stability, and only a simple modification for connecting the catamaran floating body is required, and conversely. When a monohull becomes unnecessary, it can be separated from the catamaran floating body at any time and used as an independent vessel.

(3) The catamaran floating body is relatively stable against waves,
Especially through the struts from both sides of the stabilizer,
The semi-submersible type (semi-submerged type) having a submerged buoyant body immersed in the water reduces the fluctuation of the semi-submerged type.

(4) The twin-hull type floating body is placed at a distance from the monohull so as to straddle the monohull in the left-right direction and allow relative movement of the monohull. It is easy to insert a telescoping cylinder that adjusts the position of the twin-hull type floating body between the trunk-type floating body and the monohull, and the position of the twin-hull type floating body is reliably stabilized against the fluctuation of the monohull. Can be held.

(5) Since a telescopic cylinder control system is provided which can control the expansion and contraction of the telescopic cylinder to keep the catamaran floating body in a stable posture regardless of the movement of the monohull due to the waves, the catamaran floating body is used. It is possible to automatically and efficiently maintain a stable posture.

(6) The semi-submersible catamaran-type floating body is less likely to be shaken by waves, but has a disadvantage that it is difficult to restore once it is tilted. However, in the ship of the present invention, the semi-submersible catamaran-type floating body is supported by a monohull. As a result, the inclination is prevented, so that the characteristic that does not easily cause the fluctuation is utilized.

(7) The semi-submersible catamaran type floating body with a small cross section of the water surface penetration part is always maintained in a stable posture not only at the time of sailing but also at the time of stopping the boat. Table).

(8) It is also possible to use an existing small fishing boat or the like as a monohull to which a semi-submersible catamaran floating body is connected, whereby a sightseeing barge or a ferry with stable seats can be easily realized. .

[Brief description of the drawings]

1 to 3 show a half-submersible type hull with a floating body as an embodiment of the present invention, FIG.
The figure is a longitudinal sectional view, FIG. 3 is a transverse sectional view thereof, and FIG.
The figure is a longitudinal sectional view of a conventional cabin swing absorption type ship. 1 ... monohull, 1-1 ... wheelhouse, 1-2 ... propulsion device,
2 ... Floating body, 2-1 ... Stable, 3,3 ... Strut, 4,4 ... Submerged buoyant body, 5 ... Telescopic cylinder, 6 ...
... Motion sensor 7, control arithmetic unit 8, hydraulic servo unit 9, guide rod 10, wave.

Claims (1)

(57) [Claims] A monohull and a monohull are arranged at a distance from the monohull so as to allow relative movement of the monohull while straddling the monohull in the left-right direction. With a catamaran floating body,
The floating body is composed of a semi-submersible twin-hull type floating body consisting of a stable platform above the monohull and a pair of left and right submerged buoyant bodies immersed in the water via struts from both sides of the stable boat. A telescoping cylinder connecting the stabilizer and the monohull, and controlling the expansion and contraction of the cylinder to keep the catamaran floating body in a stable posture regardless of the shaking of the monohull due to waves. A ship with a semi-submersible twin-hull type floating body, comprising a telescopic cylinder control system that can be held.