JPS6040809B2 - Submarine input recovery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for throwing fishing gear, such as crab meat, into the seabed and recovering the thrown material after a certain period of time.

Such recovery devices generally use a buoy that floats on the sea surface to indicate the location of the input and to store the fishing gear.

This buoy is connected by a rope to an input on the seabed. However, because conventional buoys are always floating on the sea surface, the location of the submarine inputs is often unknown because the buoys are destroyed or the ropes are cut by ships navigating the ocean. Therefore, in recent years, a method has been proposed in which the buoy is always submerged in the sea and is raised only when necessary. This method generally involves sinking the buoy into the sea using a weight, and then releasing the weight when it rises. In the above, when recovering the separated weight, the weight and buoy must be connected with a rope.

However, in this case, the length of the rope must be at least as deep as the seabed, and when the buoy and sinker are connected, it is necessary to store the rope. In addition, when recovering the weight, the rope connecting the weight to the buoy and the rope connecting the buoy to the seabed object become tangled, making recovery work extremely difficult. The present invention addresses the above-mentioned drawbacks and provides a recovery device that can easily and smoothly recover objects thrown into the seabed and weights.

This will be explained below with reference to the embodiments shown in the drawings.

In FIG. 1, reference numerals 1, 1, . . . are fishing gear, for example, fishing gear, which are connected to a rope 2 at regular intervals and thrown into the seabed.

The tip of the rope 2 is connected to the main body 31 of the buoy 3. The buoy 3 is floated by the buoyant force of the buoyant material 32 acting on the main body 31, but when submerged in the sea, it is sunk by the gravity of the weights 4 and 5.

The weight 4 has a donut-shaped shape and is directly connected to the main body 31. Here, rope 2 is donut-shaped weight 4
It is connected to the main body 31 by having an inner hole made of iron. On the other hand, the weight 5 is fixed at a proper position on the rope 2, and its maximum outer diameter is set to be smaller than the inner hole diameter of the donut-shaped weight 4.

In the above, the gravity of each of the weights 4 and 5 is smaller than the buoyant force of the buoyant material 32 acting on the buoy 3, but the combined gravity of the weights 4 and 5 is set to be larger than the buoyant force of the buoyant material 32.

Therefore, when the buoy 3 is thrown into the sea after the weights 4 and 5 are attached as described above, the buoy 3 sinks into the sea due to the combined gravity of the weights 4 and 5. And weight 5
When the buoyancy material 32 and the weights 4 and 6 reach the bottom, the gravitational action of the weight 5 disappears or becomes smaller.
The buoy 3 comes to rest in a state where the gravitational effects of are balanced. Therefore, the depth D from the sea surface 6 at which the buoy 3 stands still is the depth D of the weight 5
By changing the fixing position when fixing to the rope 2, an arbitrary depth can be set. Note that the depth D of the buoy 3 may be set in consideration of the transmission distance of the ultrasonic signal transmitted from the command boat 7 to levitate the buoy 3 or the water pressure resistance of the buoy 3. As above,
After the buoy 3 has been lowered into the sea, the buoy 3 is floated by separating the donut-shaped weight 4 from the main body 31. The separation operation of the donut-shaped weight 4 is as follows:
For example, this is done as shown in FIG. In FIG. 2, a vertically extending bracket 8 is fixed to the bottom of the main body 31.

The L-shaped arm 9 is attached to the support shaft 101 on the placket 8.
It is rotatably supported. Support shaft 1 of L-shaped arm 9
0 is provided at the corner of the L-shape, and is arranged so as to be spread around as shown by the chain line. A shirtcle 11 is played on the side arm 91 of the L-shaped arm 9, and this shirtcle 1
1, when the L-shaped arm 9 is in the solid line position, a notch 81 formed in the bracket 8 prevents the L-shaped arm 9 from separating from the side arm 91.

Further, the shirtcle 11 is connected to a connecting ring 41 fixed to the donut-shaped weight 4, thereby connecting the donut-shaped weight 4 to the floating body 31. In the above device, when sinking the buoy 3 into the sea, the shirtcle 11 is thrown into the side arm 91 of the L-shaped arm 9. By engaging with the engagement groove of the L-shaped arm 9, rotation is prevented.

Further, the engagement between the plunger 2 and the L-shaped arm 9 is maintained by a spring 15. When floating the buoy 3, the excitation coil 13 is first excited, and the plunger 12 is attracted upward by this excitation.

Here, the excitation coil 13 is excited based on an ultrasonic signal transmitted from the command ship 7 which is received by the receiver 38 of the buoy 3, but this is done based on the received signal. Omitted. Alternatively, the excitation coil 13 may be excited by, for example, a timer or the like after a certain period of time has elapsed. When the plunger 12 is attracted by the excitation of the excitation coil 13, the engagement between the plunger 12 and the L-shaped arm 9 is released.

As a result, when the L-shaped arm 9 rotates due to the gravity of the donut-shaped weight 4 and rotates to the chain line position, the shirtcle 11 separates from the side arm of the L-shaped arm 9. Therefore,
The donut-shaped weight 4 falls along the rope 2, and on the other hand,
The buoy 3 rises toward the sea surface due to the buoyancy of the buoyancy material 32. If the length of the rope from the weight 5 to the stopper 14 is greater than the water depth D of the buoy 3, when the donut-shaped weight 4 reaches the position of the stopper 14 fixed to the rope 2, the buoy 3 will be at sea level 6. float to the top. After the buoy 3 floats up, the rope 2 is recovered, and the donut-shaped weight 4 is also recovered along with the submarine input 1. In addition, in the above, the donut-shaped weight 4 is, for example, the third
As shown in the figure, if a cut part is provided in a part of the annular body and the cut part is joined by a removable joint piece 42, after collecting the donut-shaped weight 4, the joint piece 42
can be removed and the rope can be taken out from the cut section, facilitating the recovery work.

Furthermore, in the above description, the donut-shaped weight 4 itself has gravity and is used as a weight, but instead of the donut-shaped weight 4, a simple annular body may be used and the weight may be suspended from the annular body. Moreover, the weight 5 fixed to the rope 2 has its upper and lower parts shaped like a cone, for example, as shown in FIG. 4, and if the rope is passed through the center of the weight 5, the donut-shaped weight 4 will fall. At times, it is possible to prevent the weight from being caught on the weight 5. Further, the shape of the weight may not be a single weight, but a chain weight may be added to the rope 2. As explained above, in the present invention, the weight that is separated from the buoy is formed into a donut-shaped weight, and when it falls, it falls along the rope. These collection operations can be carried out very smoothly.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, FIG. 2 shows a specific example of the buoy, and FIGS. 3 and 4 show specific examples of the sinker. In Figures 1 to 4, 1 is submarine input, 2 is seabed input, and 2 is seabed input.
9, 3 is a buoy, 31 is a main body, 32 is a buoyant material, 33 is an ultrasonic receiver, 4 is a donut-shaped weight, 41 is a connecting ring, 4
2 is a joint piece, 5 is a weight, 6 is a sea surface, 7 is a command ship, 8 is a bracket, 81 is a notch, 9 is an L-shaped arm, 61 is a side arm, 92 is an engagement groove, 10 is a support shaft, 11 is shirtkuru, 1
2 is a plunger, 13 is an excitation coil, and 14 is a stopper. O Kanriki 2 O 3 O 4 ■

Claims (1)

[Claims] 1. A main body that floats due to buoyancy; a donut-shaped weight that is coupled to the main body and causes the main body to sink against the floating force;
a separation device that releases the connection between the main body and the donut-shaped weight and separates the main body and the donut-shaped weight,
After the donut-shaped weight is separated from the main body by the separating device, the main body is floated, and at the same time, the donut-shaped weight is dropped along a rope connecting the main body and the seabed input. A recovery device for submarine inputs, characterized in that the donut-shaped weight is also recovered together with the recovery of the submarine inputs.