JPH0620184U - Single-body type high-speed ship - Google Patents

Abstract

(57) [Abstract] [Purpose] By changing the deployment width (deflection angle) of the deployment arm, a restoring force can be given while the ship is stopped and a rolling natural period can be set arbitrarily according to the wave condition during navigation. Provide a high speed ship. [Configuration] Deploying arms 2 are provided on both sides of the elongated ship 1,
One end of the deploying arm 2 is rotatably supported on the hull 1 side. A substantially streamlined floating body 3 is provided at the free end of the deploying arm 2, while a drive arm 4 is formed at the other end so as to project therefrom, and a drive cylinder 5 is connected thereto. The drive cylinder 5 is operated to deploy the deploying arm 2 at an arbitrary angle and set the floating body 3 at a predetermined position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a single-hull type high-speed ship capable of imparting stability while the ship is stopped and changing the rolling natural period during navigation.

[0002]

[Prior art]

 In recent years, the need for speeding up not only for land transportation but also for sea transportation has been rapidly increasing. In general, the narrow single-hull type has the lowest hull resistance for high-speed navigation, and is said to be advantageous in terms of propulsion performance. However, if the hull is made slender, lateral stability will be insufficient, and stability will be significantly impaired, especially when the ship is stopped.

Therefore, some proposals have been made to solve this problem. That is, Japanese Utility Model Publication No. 60-6694 (conventional example 1) describes a hydrofoil with outriggers on the left and right sides of the hull, and Japanese Utility Model Publication No. 1-145696 (conventional example 2) describes both types of hull. A single-hulled semi-submersible ship with movable floats on the port side is described. Furthermore, in the actual Kaihei 2-143393 report (Conventional example 3), it projects downward on both sides of the ship with an inverted triangular cross section. A single-hull semisubmersible with an outrigger is described.

[0004]

[Problems to be solved by the device]

 Conventional Example 1 originally relates to a register ship, in which the outrigger can be vertically moved by a turnbuckle or the like so that the application can be switched from a yacht to a motor boat. Therefore, it is necessary to fix the position of the outrigger depending on the purpose of use in advance, and the position of the outrigger (distance from the side of the ship) cannot be changed during the navigation of the ship. The second conventional example is intended to ensure stability by simply moving the movable float up and down while the boat is stopped or sailing. In Conventional Example 3, since the outrigger is fixedly hung on the ship side, the stability is added only when landing at low speed or when moored. That is, none of the above-mentioned conventional examples can change the position of the outrigger or the like from the side of the ship in order to reduce the rolling by changing the natural rolling period according to the wave condition during navigation.

The present invention is a single-cylinder high-speed system that can set the rolling natural period according to the wave condition during navigation by changing the deployment width (deflection angle) of the deployment arm to give the restoring force while the ship is stopped. The purpose is to provide a ship.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention has deploying arms on both sides of an elongated hull, one end of the deploying arm is rotatably supported on the hull side by drive means and a floating body is attached to the other end. It is characterized by

[0007]

[Action]

 In the above structure, when the ship is stopped, the drive means is operated to largely expand the deploying arm, and the restoring force is added to improve the stability of the hull. During navigation, the deploying arm is usually expanded and retracted and retracted along the side of the ship to prevent large resistance. In addition, depending on the state of waves during navigation, the deploying arm is deployed and its spreading width is adjusted appropriately so that the rolling natural period of the ship is not synchronized with the wave period, thus reducing rolling.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a conceptual perspective view of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a front view seen from the stern direction. As shown in these drawings, the hull 1 is elongated and has a large L (captain) / B (width) (for example, about L / B = 8), and the hull 1 has both sides. A rod-shaped deploying arm 2 is provided. The base of the deploying arm 2 is rotatably supported on the hull 1, and a floating body 3 is provided at its free end. Although the floating body 3 is formed in a generally streamlined shape, one side surface may be a surface that comes into close contact with the hull surface as shown in FIG. The size of the floating body 3 is determined according to the size of the hull 1 so that the intended purpose (improvement of stability, change of natural period of the ship) can be achieved.

A drive arm 4 is formed so as to project from the base of each deployment arm 2, and the rod end of a drive cylinder 5 for deployment / expansion and expansion is connected to this drive arm 4. The base of the drive cylinder 5 is pivotally attached to the hull 1, and when the cylinder 5 is extended, the expansion arm 2 is expanded and the floating body 3 at the tip can be set at an arbitrary position from the side of the ship. As a result, it is possible to freely select the rolling natural period of the ship by changing the deployment width (deflection angle) according to the wave condition during navigation.

Although not shown, it is advisable to provide fins perpendicular to the bottom surface of the floating body so that the posture of the floating body does not change as the deployment arm rotates. Alternatively, a mechanism for rotating in the opposite direction in association with the swing angle of the deploying arm may be built in the floating body. Further, as shown in FIG. 5, the objective can be achieved by forming the deploying arm on the parallel link 6. That is, this objective can be achieved mechanically by pivotally connecting the pair of deploying arms 6a and 6b extending in parallel to the front and rear of the floating body 3. In this case, the floating cylinder 3 can be set at a predetermined position by connecting the drive cylinder 5 to one of the expanding arms 6a and expanding and contracting the same.

Here, the operation of the above embodiment will be described. First, while the ship is stopped, the drive cylinder 5 is extended as necessary to move the deploying arm 3 to the position A of the maximum deploying width, and the stability of the elongated hull is improved by applying the restoring force. Next, during navigation, the deploying arm 2 is usually expanded / contracted so as to reduce the increase in resistance, so that it is along the side of the ship (position C). At this time, depending on the wave condition, the deploying arm 2 is slightly deployed and brought to the position B, and the rolling natural period of the ship is changed to suppress the rolling. If a controllable fin (hydrofoil) is provided on the outer plate near the bottom of the ship, the stability of the ship can be increased by controlling this during navigation.

In FIG. 4, a storage recess 7 is provided on the side of the ship so that the floating body can be accommodated therein in order to reduce the resistance during navigation as much as possible. When the floating body is in the retracted state, the resistance increase can be minimized by making the outer shape of the floating body approximately coincide with the line on the ship side.

[0013]

[Effects of the Invention] In a monohull, L / B can be increased, and high speed and seaworthy performance can be improved. Stability can be improved by ensuring the stability when the ship is stopped. By changing the deployment width of the deployment arm, the rolling inherent period can be set according to the wave state, and as a result, the rolling can be reduced.

[Brief description of drawings]

FIG. 1 is a conceptual perspective view of a single-hull high-speed ship of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view seen from the stern.

FIG. 4 is a diagram showing another mode of storing the floating body.

FIG. 5 is a plan view when the deploying arm is formed in a parallel link mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hull 2 ... Deploying arm 3 ... Floating body 4 ... Drive arm 5 ... Drive cylinder 6 ... Parallel link (mechanism) 7 ... Storage recess

Claims (1)

[Scope of utility model registration request] 1. A deployment arm is provided on both sides of an elongated hull,
A single-hull type high-speed ship, wherein one end of the deploying arm is rotatably supported on the hull side by a drive means so as to be deployable, and a floating body is attached to the other end.