JPH06135383A - Propulsion device of submerged moving body - Google Patents

Abstract

PURPOSE:To provide a propelling device of a submerged moving body which generates no noise and no cavitation, and also generates no force in the direction other than the propelling direction (no sway). CONSTITUTION:This propelling device of a submerged moving body is supported by supporting positions 3 at both ends in the width direction at the plural places including both ends in the longitudinal direction, and provided with bendable plates (elastic vibration baldes) 2 bending freely by the vertical movement of the supporting positions 3; and an outer tube 1 surrounding the plates 2, having a mechanism to drive the supporting positions 3 vertically to both side walls, and opening in the longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion device used for a moving body in liquid.

[0002]

2. Description of the Related Art In a conventional liquid moving body, as shown in FIG. 4, a propelling force is obtained by rotating a propeller 02 of a liquid moving body 01 in the liquid. Further, as shown in FIG. 5, the propulsive force is obtained by vibrating the freely bending plate 03 that is projected to the outside of the submerged moving body 01 and is supported by the submerged moving body 01 at only one point.

[0003]

In the submerged moving body shown in FIG. 4, which obtains propulsive force by rotating the above-mentioned conventional propeller,
It was difficult to keep quiet because sound was generated by the bubbles generated when the propeller was rotated. Further, in the in-liquid moving body shown in FIG. 5 in which the exposed plate is vibrated, sound such as a propeller is less likely to be generated by bubbles, but a force other than a desired propulsive force (called a sway) is generated, and the vehicle straightly travels stably. It was difficult to change or change the direction freely.

The present invention intends to provide a propulsion device for a moving body in liquid which can solve the above problems.

[0005]

The propulsion device for a submerged moving body of the present invention is supported by supporting points at both ends in the width direction at a plurality of places including both ends in the front-rear direction, and by moving the supporting points up and down. It is characterized in that it is constituted by a plate which bends freely and a cylinder which surrounds the plate and has a mechanism for vertically driving a support point of the plate and which is opened in the front-rear direction.

[0006]

According to the present invention, the propelling mechanism does not use a propeller, but a freely bending plate is used, so that the non-quietness, which is a drawback of the propeller, is solved. Furthermore, in the case of a conventional submerged moving body that protrudes a freely bending plate and vibrates by driving at only one point, a force also acts in a direction other than the required propulsion force, so when moving the submerged moving body straight. However, in the present invention, since the fluid force can be concentrated in one direction by inserting the freely bending plate in the cylinder, the sway does not occur and The moving body can be moved straight, and in addition to this, the traveling direction of the in-liquid moving body can be freely controlled by changing the direction itself of the cylinder.

Further, since the freely bending plate is driven by a plurality of supporting points, the liquid taken into the cylinder can be efficiently delivered. In addition, by changing the phase of the vibration of the freely bending plate by 180 °, the same propulsive force can be obtained without distinction between the front and rear.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

Around the rear portion of the submerged moving body 5, there is attached an outer cylinder 1 which projects outward from the body of the submerged moving body 5 and has a rectangular cross section which is open in the front-rear direction. The side wall of the outer cylinder 1 is provided with a plurality of slots 4 arranged at intervals in the front-rear direction in the radial direction of the body 5 (hereinafter referred to as the vertical direction).

Reference numeral 2 denotes an elastic vibrating blade which is accommodated in the outer cylinder 1 and can be freely bent. A plurality of support points 3 are provided at both ends in the width direction, and the frontmost one of the support points 3 is provided. The last one and the last one are provided at the front end and the rear end of the elastic vibrating blade 2, respectively. Each of the support points 3 is accommodated in each slot 4 and can slide in the slot 4.

Each support point 3 is supported by a servomotor 14 and driven vertically in the slot 4. The signals of the vibration frequency ω set by the frequency setting device 11, the phase difference φ set by the phase difference setting device 12, and the vibration amplitude a set by the vibration amplitude setting device 13 are input to each servo motor 14, and each servo motor 14 receives the signals. Each supporting point 3 is vertically driven in the slot 4 by the motor 14 so as to have a height indicated by a sin (ωt + φ) (t is time).

In the present embodiment, by driving the support points 3 in association with each other in the vertical direction as described above, the elastic vibrating blade 2 forms a sine curve from the front to the rear,
Moreover, since this shape changes from the front to the rear with time, the liquid enters the outer cylinder 1 from the front end of the outer cylinder 1 as shown by arrows A and A'in FIG. It is discharged from the rear end. Note that FIG. 2 shows the shape of the elastic vibrating blade 2 at a certain time. Further, by advancing or retarding the phase of the elastic vibrating blade 2 by 180 °,
It is also possible to flow the liquid in the opposite directions shown by arrows B and B'in FIG. Therefore, according to this embodiment, the propulsive force in the front-rear direction can be generated.

Further, in this embodiment, since the elastic vibrating blade 2 is housed in the outer cylinder 1, the liquid force can be concentrated in the front-rear direction, and the sway acts on the submerged moving body 5. There is no.

Further, since the elastic vibrating blades 2 are used in this embodiment, the problems of noise and cavitation generated when a propeller is used can be solved.

Furthermore, by making it possible to change the direction of the outer cylinder 1, the direction of the propulsive force can be changed.

[0016]

According to the present invention, which has the structure described in the claims, a plate which is freely bent is surrounded by a cylinder opened in the front-rear direction, and a plurality of support points at both ends in the width direction of the plate are provided. Since the liquid is moved in the vertical direction to obtain the propulsive force, the noise and cavitation that were problems in the conventional propeller propulsion, and the propulsion that was a problem in the conventional elastic vibration blade propulsion The generation of forces other than the forces can be suppressed as much as possible, forward and backward propulsive forces can be obtained, and propulsive forces in arbitrary directions can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view of an in-liquid moving body including the present embodiment.

FIG. 3 is a system diagram of a support point drive command portion of the present embodiment.

FIG. 4 is a perspective view of a conventional propeller-propelled moving body in liquid.

FIG. 5 is a perspective view of a conventional one-point-supporting vibrating blade propulsion type moving body in liquid.

[Explanation of symbols]

 1 Outer cylinder 2 Elastic vibrating blade 3 Support point 4 Slot 5 Moving body in liquid 11 Frequency setting device 12 Phase difference setting device 13 Vibration amplitude setting device 14 Servo motor

Claims (1)

[Claims] 1. A plate that is supported by support points at both ends in the width direction at a plurality of locations including both ends in the front-rear direction, and is bent freely by vertical movement of those support points, and the plate that surrounds the plate and is provided on both side walls. 2. A propulsion device for a submersible body, which has a mechanism for vertically driving the support point of and is constituted by a cylinder opened in the front-rear direction.