KR19990064822A - An anti capsizing device for fishing boat - Google Patents

Abstract

The present invention relates to a device for preventing overturning of fishing vessels, and more specifically, to generate in real time a restoring force for the force that causes the fishing boat to swing in the case of a lateral yoke (when rolling) in which the sailing vessel is severely swayed in the transverse direction. The present invention relates to an overturn prevention device of a fishing boat, which maintains an equilibrium state and prevents a fishing boat from overturning so that the fishing boat can sail safely.

The apparatus for preventing overturning of a fishing vessel according to the present invention includes a stabilizer 22 projecting vertically along a longitudinal direction of a bottom center portion of a fishing vessel, and being coupled to a lower end portion of the stabilizer 22. Wings 24a and 24b horizontally positioned at both sides thereof, a pair of flaps 26a and 26b respectively installed at rear ends of the wings 24a and 24b and fixed at an end thereof to enable angular movement, and the flaps A pair of levers 30a and 30b fixed to one end of each of the ends 26a and 26b and capable of adjusting the direction angles of the ends of the flaps 26a and 26b, and hinged to the other ends of the levers 30a and 30b. And a pair of connecting rods 28a and 28b extending vertically, the center portion of which is rotated by being coupled to the shaft of the motor 34, and the end portions of the connecting rods 28a and 28b are hingedly coupled to both ends thereof, respectively. Rotating lever 31 for moving up and down 28a and 28b and for driving the motor 34 One motor drive unit 36, the inclination sensing unit 40 for measuring the inclination of the fishing boat, and the flap 26a for calculating the restoring force for maintaining parallel state according to the inclination of the fishing boat and generating the restoring force according to the calculated value. And a controller 38 having a program for outputting a control signal to control the inclination angle of the controller 26b.

Description

Anti capsizing device for fishing boat

The present invention relates to a device for preventing overturning of fishing vessels, and more specifically, to generate in real time a restoring force for the force that causes the fishing boat to swing in the case of a lateral yoke (when rolling) in which the sailing vessel is severely swayed in the transverse direction. The present invention relates to an overturn prevention device of a fishing boat, which maintains an equilibrium state and prevents a fishing boat from overturning so that the fishing boat can sail safely.

While a vessel such as a fishing vessel is sailing, a phenomenon in which the ship moves up and down or laterally moves side by side according to the movement of the wave due to the change of the load, such as the weather condition or the live fish tank or the net, is frequently occurred. Due to this shaking, seasickness may occur and the cargo loaded on the ship may be damaged and overturned.

In order to solve this problem, various methods of attenuation of shaking have been devised, and one of such results is bilge keel. The bilge tile is a flat fin that is perpendicular to the exterior of the hull's bend, and when the fishing boat is swayed by waves, viscous damping force is generated due to contact with water in the opposite direction of the inclined direction due to the fin shape. It is effective.

1A and 1B show an example of a conventional fixed bilge coil 12, which is about half the length of the entire fishing vessel in the longitudinal direction of the fishing vessel 10, and the outer surface of the curved portion of the fishing vessel 10 is shown. It is formed in, and is immersed in seawater during voyage.

When the fishing boat 10 is shaken in the direction of arrow A with the center of gravity G as the center point, the bilge tile 12 installed on both sides of the fishing boat 10 moves through the water and moves in the direction of arrow B. Guard work (10) in the flat form is to move in the water because the damping force is generated there is an effect that the shaking is reduced.

However, the fixed bilge key 12 as described above has a problem in that the damping force is not generated sufficiently because the area of the bilge key is limited when the fishing boat is severely shaken.

Therefore, a variable type that can variably adjust the length of the bilge key 12 exposed to the outside in order to generate a sufficient damping force according to the change of the state of the wave has been developed. 2 shows how the entrance and exit length of the bilge key 12 is varied according to the state of the wave.

That is, in a state where there are not many waves, the length exposed to the outside of the bilge key 12 is kept short, but in the state where there are many waves, the bilge key is used by using the extension part 14 installed inside the fishing vessel 10. Since the length of the work 12 to cope with the advantage that can actively cope with the shake.

However, in the case of the variable bilge kiil as described above, it was difficult to adjust to an appropriate state when the center of gravity greatly increased due to the loading of waves, nets and water tanks in the case of yachts or small fishing vessels. In addition, when the cargo is loaded like a fishing boat, the center of gravity is greatly changed, so even when the bilge tile is installed, the stability is lowered, and in the case of heavy waves, the fishing boats are overturned.

The present invention has been made in order to solve the above problems, an object of the present invention is to swing the fishing boat in the case that the sailing vessel is severely swayed in the horizontal direction (loading) by the loading and wave of a net or a water tank, etc. It is to provide an anti-overturning device of a fishing boat that enables the fishing boat to sail safely by generating a resilience force for the power in real time to prevent an overturning of the fishing boat by maintaining an equilibrium state.

In order to achieve the above object, the apparatus for preventing rollover of a fishing vessel of the present invention includes a stabilizer projecting vertically along the longitudinal direction of the bottom center portion of the fishing vessel, and coupled to a lower end portion of the stabilizer on both sides of the stabilizer. Wings positioned horizontally, a pair of flaps respectively provided at the rear end of the wing, and a pair of flaps fixed at one end of the flap, and fixed to one side end of the flap to adjust the direction angle of the flap end. A lever, a pair of connecting rods hinged to the other end of the lever and extending vertically, and a center portion are pivotally coupled to the shaft of the motor, and the front ends of the connecting rods are hingedly coupled to both ends to win the connecting rod. Rotating lever for lowering and moving, motor driving part for driving the motor, and tilting for measuring the inclination of fishing boat It is composed of a branch and a control unit having a program for outputting a control signal for calculating a restoring force for maintaining parallelism according to the inclination of the fishing boat and for controlling the inclination angle of the flap for generating the restoring force according to the calculated value. It is done.

Figure 1a is a schematic side view of a fishing boat having a fixed bilge key used in the prior art,

1b is a schematic front view of a fishing boat having a fixed bilge key used in the related art;

2 is a schematic front sectional view of a fishing boat having a variable bilge key used in the related art;

3 is a schematic view of a fishing boat provided with a roll-over prevention device for fishing vessels according to the present invention;

Figure 4a is a side cross-sectional view showing the mechanical structure of the rollover prevention device of the present invention,

Figure 4b is a plan sectional view showing the mechanical structure of the rollover prevention device of the present invention,

Figure 5a is a side view showing the installation state of the rollover prevention apparatus of the present invention,

Figure 5b is a plan view showing the installation state of the rollover prevention apparatus of the present invention,

6 is a schematic block diagram of a control circuit of the apparatus for preventing rollover of a fishing vessel of the present invention;

7 is a flowchart showing an operating state of the rollover prevention apparatus of the present invention,

8A and 8B are graphs showing the results of exercise experiments of the present invention.

Explanation of symbols for the main parts of the drawings

10. Fishing vessel 12. Fixed bilge seal 14. Bilge key waterproofing device

20. Fishing vessels 22. Stabilizers 24a, 24b. whiz

26a, 26b. Flaps 28a, 28b. Connecting rod 30. Lever

30a. Hinge coupling portion 30b. Fixing part 31. Rotating lever

32. Fixed Rod 34. Motor 36. Motor Drive Part

38. Control part 40. Inclination detection part 42. Position control detection part

Hereinafter, with reference to the accompanying drawings, the rollover prevention apparatus of the present invention in detail as follows.

The present invention is a device that can prevent a ship, such as a fishing boat, to be shaken by waves during sailing, and, in severe cases, to be overturned. In particular, the inclination of the fishing boat caused by the movement of the wave is detected using the inclination sensor, and the restoring force that can solve the inclination is generated on the outer lower side of the fishing boat to maintain the equilibrium of the fishing boat. Therefore, by accurately and quickly detecting the inclination of the fishing vessels, there is an effect that can solve various problems caused by the shaking during the navigation of the fishing vessels.

The apparatus for preventing rollover of a fishing vessel as described above is provided with a stabilizer 22 projecting vertically along the longitudinal direction of the bottom center portion of the fishing vessel, and being coupled to a lower end of the stabilizer 22. Wings 24a and 24b positioned horizontally on both sides with respect to the center) and a pair of flaps 26a and 26b respectively installed at rear ends of the wings 24a and 24b and having end portions capable of rotating angular motion. And a pair of levers 30a and 30b fixed to one end of each of the flaps 26a and 26b to adjust the orientation angles of the ends of the flaps 26a and 26b, and the other of the levers 30a and 30b. A pair of connecting rods 28a and 28b hinged to the ends and extending vertically, and a central portion thereof are rotated by being coupled to the shaft of the motor 34, and the front ends of the connecting rods 28a and 28b are hinged at both ends, respectively. Rotating lever 31 and the motor 34 to move up and down the connection rod (28a, 28b) is coupled A motor driving unit 36 for driving the motor, an inclination sensing unit 40 for measuring the inclination of the fishing boat, and a restoring force for maintaining the parallel state according to the inclination of the fishing boat, and generating a restoring force according to the calculated value. The control unit 38 includes a built-in program for outputting a control signal to control the inclination angles of the flaps 26a and 26b.

First, an embodiment of the present invention will be described with reference to FIG. 3. As shown, the stabilizer 22 protrudes downwardly vertically along the bottom centerline of the fishing vessel 20. The stabilizer 22 is provided along the longitudinal direction of the fishing vessel 20, and generates sufficient restoring force according to the present invention, so that even if the stabilizer 22 has a length shorter than that of the bilge tile 12 shown in FIG. Can be exercised. The stabilizer 22 has a streamlined shape to reduce frictional resistance with water during navigation. In addition, a space is formed inside the stabilizer 22.

The lower end of the stabilizer 22 is provided with a pair of wings (24a, 24b) on both sides, the wings (24a, 24b) also has a streamlined shape to reduce friction with water and also does not break It is made of material. In addition, the wings (24a, 24b) are used to be installed horizontally with respect to the water surface. The distance between the wings 24a and 24b and the bottom of the fishing vessel 20 can be changed according to the magnitude of the restoring force to be obtained, and of course the magnitude of the lift force can also be changed by a flap which will be described later. The size of fishing vessels should also be taken into account in the calculation of resilience.

The flaps 26a and 26b separated from each other are provided at the rear ends of the wings 24a and 24b, respectively, and these flaps 26a and 26b are for generating a restoring force, and the ends of the flaps are configured to angularly move up and down. have. Restoring force (lift) is generated vertically upward or vertically downward on the surfaces of the wings 24a and 24b depending on the moving direction of the flap end. The direction of restoring force generated at this time is indicated by F1 and F2 in FIG. 3.

The upwardly acting force F1 is generated when the end of the flap 26b moves to a lower position than the wing 24b, and the downwardly acting force F2 is located above the wing 24a. Is generated. Of course, the force F1, F2 can be arbitrarily generated by adjusting the orientation angles of the ends of the flaps 26a, 26b. By adjusting the force generating direction in this way it is possible to effectively cope with the shaking of the fishing vessel 20.

The mechanical mechanism for generating the restoring force is shown in detail in FIGS. 4A and 4B. Figure 4a is a perspective side cross-sectional view of the lower part of the stabilizer 22 of Figure 3, a pair of connecting rods (28a, 28b) is installed in the interior space of the stabilizer 22 formed vertically, and the connecting rod (28a) Lever 30a, 30b is connected to the lower end of 28b, respectively. The upper ends of the connecting rods 28a and 28b are hingedly coupled to both ends of the pivoting lever 31 in which the center portion is coupled to the shaft of the motor 34, respectively. As a result, the lever 30a moves up and down the connecting rods 28a and 28b. 30b) is interlocked.

The levers 30a and 30b and the connecting rods 28a and 28b are connected to each other by the hinge coupler 33 so as to be movable. However, the levers 30a and 30b and the fixing rods 32 of the flaps 26a and 26b are separated from each other. The coupling state is fixedly coupled in such a manner that the fixing rod 32 is interlocked according to the movement of the levers 30a and 30b.

The other ends of the levers 30a and 30b are fixed to the flaps 26a and 26b. The flaps 26a and 26b are for adjusting seawater direction and flow rate, and are similar to the operating state of the tail wing of an airplane. When the ends of the flaps 26a and 26b face upward, the seawater moves rapidly to the lower side of the flaps 26a and 26b so that the acting force acts vertically downward. As a result, this force adjusts the flow direction by the wings 24a and 24b, and becomes a force which correct | amends the inclination of the fishing boat 20. FIG.

The movement of the ends of the flaps 26a and 26b is controlled according to the operating states of the connecting rods 28a and 28b, and the connecting rods 28a and 28b are moved by the rotation lever 31 connected to the shaft of the motor. do.

The fixing and operating states of the flaps 26a and 26b will be described with reference to FIG. 4B. The levers 30a and 30b coupled to the connecting rods 28a and 28b are fixed to the flaps 26a and 26b, but are actually inserted into the flaps 26a and 26b so that the fixed rod 32 is fixed to be interlocked. The connecting rods 28a and 28b are fixedly coupled to the inner end. Therefore, when the lever (30a, 30b) is moved to the shank, the fixed rod 32 is rotated by itself corresponding to the shangdong of the lever (30a, 30b), the flaps (26a, 26b) are fixed rod (32) It is integrally fixed with and causes the flaps 26a and 26b to rotate as well.

At this time, since the fixing rods 32 are rotatably fixed to the wings 24a and 24b by the fixing units 33a as shown in FIG. 4b, as the fixing rods 32 rotate, the flaps 26a and 26b are rotated. ) End is angular movement.

In this way, the angles of the ends of the flaps 26a and 26b can be changed, and the forces F1 and F2 generated on the surfaces of the wings 24a and 24b change in accordance with the angle change of the flaps 26a and 26b. According to the degree of inclination of 20), it is possible to generate an appropriate force to maintain the balance of fishing vessels. In the actual generation of forces, the forces F1, F2 generated by the flaps 26a, 26b are opposite in direction and the same magnitude.

5A and 5B show an installation state of the roll-over prevention device of the fishing vessel of the present invention having the above configuration.

As shown, the stabilizer 22 is installed on the bottom outside the center of the fishing vessel 20. In addition, the connecting rods 28a and 28b extend to the upper side of the fishing vessel 20 through the inner space of the stabilizer 22, and the connecting rods 28a and 28b are pivoting levers having a central portion coupled to the motor 34. 31) are connected at both ends. In particular, in the present invention, since the restoring force on the surfaces of the wings 24a and 24b can be increased by adjusting the angles of the flaps 26a and 26b, the size is significantly reduced compared to the bilge tile 12 which is conventionally used. have.

A control device for controlling the motor 34b for adjusting the restoring forces F1 and F2 by controlling the respective connecting rods 28a and 28b will now be described with reference to FIG. 6. The control apparatus calculates the motor driving part 36 for driving the motor 34, the inclination detection part 40 for measuring the inclination of a fishing boat, and the restoring force for maintaining parallel state according to the inclination of a fishing boat. And a controller 38 having a program for outputting a control signal for controlling the inclination angles of the flaps 26a and 26b for generating the restoring force according to the calculated value.

The control unit 38 for outputting a control signal to the motor driving unit 36 may be configured using a conventional one-chip microcomputer or a microprocessor, and the control data and the control program are embedded therein. The control unit 38 detects the inclination of the fishing vessel 20 in real time using the inclination detection unit 40, and also provides a feedback signal from the position control detection unit 42 that supplies the current state of the motor 34 in real time. Receive, and calculates the restoring force according to the inclination of the fishing boat.

When the restoring force is calculated in this way, the control unit 38 outputs an electrical control signal to the motor driving unit 36 to generate the restoring force for maintaining the fishing vessel 20 in equilibrium. The inclination detection unit 40 is a kind of sensor capable of detecting the inclination of the fishing boat, and measures the angle at which the fishing boat is inclined to the port or starboard and converts it into an electrical signal and inputs it to the controller 38.

Referring to the flowchart of Figure 7 the overturn prevention device of the fishing vessel of the present invention having the configuration as described above will be described as follows.

When the voyage of the fishing vessel 20 is started, the tilt prevention device 40 connected to the control unit 38 is activated to detect the inclination (inclined angle) of the fishing vessel 20 sailing in real time. The tilt angle data detected in real time is input to the controller 38 and temporarily stored. At the same time, the current position data of the motor 34 (i.e., shandong position data for angle adjustment of the flaps 26a and 26b) is fed back to the control unit 38 and used to calculate the restoring force.

For example, if it is detected that the fishing vessel 20 is inclined to the starboard, in order to maintain the balance of the fishing vessel 20, a restoring force of a magnitude capable of restoring the inclination should be generated. The control unit 38 determines the inclination angle by using the inclination angle input from the inclination detection unit 40 and the position control feedback data of the motor. The controller 38 determines the inclination angles of the determined flaps 26a and 26b and then outputs a control signal for adjusting the angle of the flaps. The position control signal output at this time is a signal for driving the motor 34.

When the control signal is input from the control unit 38, the motor driving unit 36 is operated to control the motor to control the motor 34, respectively, and when the motor 34 is operated in this way, the connecting rods 28a and 28b are vertical. The angle of the flaps 26a and 26b is adjusted while moving. As a result of the operation of the flaps 26a and 26b, a force for correcting the inclination of the fishing vessel 20 is generated on the upper surfaces of the wings 24a and 24b to restore the fishing vessel 20 to a horizontal state.

The restoring force for maintaining the fishing vessel 20 in equilibrium can be changed according to the size, shape and type of cargo. The restoring force is set by experiments on the fishing vessel or calculated by physical dynamic calculation. The calculated data, for example, the magnitude of the restoring force according to the inclination of the fishing vessel, the operating angle of the flap for generating the restoring force, the swing distance of the connecting rod, the number of rotations of the motor and the supply voltage It can be stored in the microneedle microcomputer (or a microprocessor built-in memory device) used as (38).

Points to consider in the design of the wing-flap used in the present invention are as follows. Wing-flap of the present invention is to produce a roll moment to restore to the contrary when the fishing vessel is sway, so that the lateral swing of the fishing vessel is completely attenuated, so that the wing-flap of the fishing vessel In order not to affect the pitch movement, the center of pressure acting on the wing-flap must be in line with the center of gravity of the fishing vessel. In addition, in order to generate only the roll moment without generating the pitch moment, the flaps of the starboard and the port port need to be reversed.

In other words, the starboard flap goes down and the port flap goes up, so the lifting force is doubled, and the moment of restoration is generated, and the fishing boat is inclined to the port and maintains the equilibrium.

Also, in the design of wing-flaps, the roll exciting force due to the waves of fishing vessels must be known. This is based on the 3-D diffraction theory, and the motion response calculation program of fishing boats has been developed in the related art and can be easily calculated using this. For example, the roll external force is maximum when the wave length becomes 1.26 times the length of the fishing boat, so the roll motion is suppressed by generating the moment acting in the opposite direction where the tilt occurs by operating the flap before this maximum value occurs. You can do it. This can be measured in real time by using a sensor, especially for immediate response.

In addition, for example, a wing-flap is manufactured in a relatively thick NACA0015 in consideration of structural strength, and a strut (holding and crutch) used as a stabilizer 22 in the center is also considered in that a control device is installed. It can be manufactured from NACA0015 having a% thickness. In addition, the wing (chord) of the cord (chord) is 1m, the tip (tip) 0.8m, Span is made of 0.75m, and the flap can be manufactured to have a cord of 0.8m. The wing is attached parallel to the bottom of the fishing boat, which is intended to zero the lift by the wing when the flap angle is zero. The height of the struts is variable and the optimum design value is about 38cm on small fishing boats.

8A and 8B are graphs showing the results of motion experiments in multi-directional short waves in the experimental example of the present invention, in which the angle of the flap is manipulated or not at 8 knots. 8A shows a case where the angle of the flap is fixed at 0 °, and FIG. 8B shows a case where the angle of the flap is controlled.

Snack type steering gear consisting of 10 units was used to generate multi-directional waves and to measure vertical motion and lateral fluctuation at forward speed. Since the scale ratio of the model ship was set to 1/4, the motion test was not possible in the relatively large wave.

Therefore, it was difficult to generate wave to increase the lateral movement and the experiment was performed in the range of 30cm, the maximum wave height that can be produced in the towing tank of Pusan National University.

In order to maximize the transverse motion of ships with advanced speed within this range, multi-directional irregular waves were generated with a significant wave period of 2.0 sec giving a maximum transverse motion response in the integer and a significant wave length of 27 cm.

As a result of changing the phase difference of the 10th unit from the first unit of the sowing machine from 1.0 to 1.9 seconds, it was found that the lateral oscillation movement of the model line occurred at 1.9 seconds. Although the amplitudes of the ten units were varied, it was found that generating waves with a constant amplitude produced maximum lateral fluctuations.

Representative wave shows the result of the motion response according to the presence or absence of the flap at the speed of 8 knots of FIG. When the flap is activated, the follow-up movement is slightly decreased and the lateral movement is greatly reduced.

In other words, the bottom wing-flap system, which is a rollover stabilization device for small fishing boats, was developed and verified by model test. The wing-flap system is designed to be used to descend from the cabin during transverse movement, which is considered in convenience of berthing and net work.

When the bottom wing is attached, the lateral attenuation damping moment value is increased even in the absence of forward speed. As the speed increases, the amount of increase increases. In addition, the operation of the flap suppressed the lateral movement.

The rollover prevention device of the present invention can be applied to a variety of small vessels, as well as fishing vessels, especially when applied to fishing vessels or cargo ships with a constant cargo loading can effectively maintain the equilibrium of a vessel such as fishing vessels or cargo ships.

The apparatus for preventing overturning of fishing vessels of the present invention as described above, when the sailing vessel is vibrating severely in the transverse direction, generates a restoring force for the force that causes the fishing vessel to swing and maintains the equilibrium of the fishing vessel while the fishing vessel is overturned. It is possible to prevent the fishing boat to sail safely.

Claims (3)

In the device for keeping the fishing boat horizontal, Stabilizer 22 which projects vertically along the longitudinal direction at the bottom center of the fishing boat, Wings 24a and 24b which are coupled to the lower end of the stabilizer 22 and positioned horizontally on both sides with respect to the stabilizer 22, A pair of flaps 26a and 26b installed at rear ends of the wings 24a and 24b, respectively, the ends of which are fixed to enable rotational movement; A pair of levers 30a and 30b fixed to one end of each of the flaps 26a and 26b to adjust the direction angles of the ends of the flaps 26a and 26b, A pair of connecting rods 28a and 28b hinged to the other ends of the levers 30a and 30b and extending vertically; A pivoting lever 31 having a central portion coupled to the shaft of the motor 34 and pivoting at both ends thereof coupled to the front ends of the connecting rods 28a and 28b in a hinged manner to move the connecting rods 28a and 28b up and down; A motor driver 36 for driving the motor 34, an inclination sensing unit 40 for measuring the inclination of the fishing boat, A control unit 38 having a program for calculating a restoring force for maintaining parallelism according to the inclination of the fishing boat and for outputting a control signal to control the inclination angles of the flaps 26a and 26b for generating the restoring force according to the calculated values Rollover prevention device of a fishing vessel, characterized in that consisting of. 2. The apparatus of claim 1, wherein the pair of flaps (26a, 26b) are controlled to generate restoring forces of the same magnitude in opposite directions when restoring forces for preventing crossover of the fishing vessels are generated. . 3. The stabilizer (22), the wings (24a, 24b) and the flaps (26a, 26b) have a streamlined shape in order to reduce fluid resistance and increase restoring force. Overturn prevention device of fishing boat.