JPH0452156Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a device for dropping the first boat (skiff) mounted on a purse seine fishing boat onto an interface.

<Prior art> A large purse seine fishing boat has a No. 1 boat, also called a large denma or a skiff, mounted on its stern end, and when necessary, that is, when a school of fish is discovered or approached, this No. 1 boat and the main vessel are connected. The fishing method is to hold both ends of the net with each of the nets and surround the school of fish. Dropping the first boat required speed, and conventionally the first boat was placed on an inclined slipway at the stern end, moored with a support rope from a winch, and a stopper was placed in the middle of this support rope. However, a system was adopted in which the stopper was released when necessary. As shown in FIG. 4, this stopper pivots the lower end of the curved member b on the base a,
A rope c on the side of boat No. 1 is hooked to the curved member b, and its curved tip is fixed with a movable striking plate d.
The structure was such that by hitting the striking plate d with a hammer or the like, the striking plate d was brought down in the direction of the arrow α, and the curved member b was rotated in the direction of the arrow β.

However, such a stopper is a manual blow plate d.
In order to hit the hitter, the rope on the side of boat No. 1 and the stopper itself, which was released towards the hitter and those around him, may come flying at him, and in fact, some people have been injured due to this.

<Problems to be solved by the invention> The purpose of the invention is to eliminate the above-mentioned dangers of the conventionally used stopper and to provide a device that can quickly and safely leave Boat No. 1.

<Means for solving the problem> The gist of the present invention is that a hook is rotatably attached to the top of a stand installed near the stern of a fishing boat, with its central portion pivoted, and the hook is One end has a recess for rope hooking, the other end has a stepped part for mooring the stopper arm, and the stopper arm has a rotating shaft at a short distance from the hook toward the bow, and the tip of the stopper arm is the hook. The tip of a rod of a cylinder located at the bottom is pivotally attached to the midway part of the stopper arm that is moored to the mooring step, and the outer periphery of the rod is equipped with a spring that has a biasing force that causes the rod to extend. This is the first boat release device for a large purse seine fishing boat.

<Embodiments and operations> The present invention will be described in detail below with reference to drawings showing embodiments thereof.

Fig. 1 is a partially cutaway side view of the device of the present invention, and Fig. 2 is a partially cutaway front view of the device. On one end side there is a recess 2 for rope hooking.
a, A stopper arm tip mooring stepped portion 2b is formed on the other end side. The base end of the stopper arm 3 is also pivotally attached to the pedestal 1, and the tip is shaped so that it can be easily moored to the stopper arm end mooring step 2b. In some cases, a small roll or a small ball is rotatably attached to the tip of the par arm 3. A cylinder 4 is arranged below the stopper arm 3, and the tip of the rod 4a is pivotally connected to the middle part of the stopper arm 3, and the outer periphery of the rod 4a has a biasing force in the direction of extending the rod 4a. A spring 5 is fitted.

In the device of the present invention having such a configuration, as shown in FIG. 3, one end of the rope B is fastened to boat No. 1 A, and the other end is formed into a loop shape, and is hooked into the rope hooking recess 2a of the hook 2. The hook 2 is placed in a state as shown in FIG. 1, and the rotation of the hook 2 is held in a state prevented by a stopper arm 3. In other words, boat No. 1 A, to which one end of rope B is tied, is quite heavy and is placed on an inclined slipway, so a large tension is applied to rope B, which tries to rotate hook 2. , rod 4a of cylinder 4
1, the rod 4a is extended by the spring 5, and the stopper arm 3 is lifted upward in FIG. As a result of being pressed, the hook 2 cannot rotate and is held in the condition shown in FIG.

In the device of the present invention, since the rotation of the hook 2 is directly prevented by the stopper arm 3, the force from the hook 2 is applied to the stopper arm 3, and the direction of the force is directed to the axis of the stopper arm 3. If the stopper arm 3 is misaligned, the force will try to rotate the stopper arm 3, and the rod 4a of the cylinder 4 will apply an extra force sufficient to prevent the rotation of the stopper arm 3.
Since the cylinder must be supported, the spring 5 must be strong, and as a result, the cylinder itself must be large. Therefore, as shown in FIG. 1, the hook 2 is placed in a position such that the direction of the force applied from the stopper arm mooring step 2b to the stopper arm 3 matches the axis of the stopper arm 3. It is preferable to arrange the pivot portion of the stopper arm 3. That is, if it is set as shown in FIG. 1, the stopper arm mooring stepped portion 2b presses the tip of the stopper arm 3 in a horizontal direction, and the pressing force matches the longitudinal direction of the stopper arm 3. Therefore, the rod 4a of the cylinder 4 simply rotates the stopper arm 3.
Since the spring 5 only needs to support the rotational force generated by its own weight, the spring 5 does not need to be very strong.

In such a situation, if necessary, operate the cylinder 4 and retract the rod 4a to release the stopper arm 3.
When the rope B is rotated counterclockwise until it reaches the position shown by the imaginary line in Figure 1, its tip comes off the hook 2, and there is no longer a factor preventing the rotation of the hook 2, so the tension on the rope B is reduced. This causes the hook 2 to rotate counterclockwise, and when the hook 2 rotates to a certain extent, the rope A comes off from the hook 2, and the hook 2 itself then rotates freely.

In Figures 1 and 2, 6 is an auxiliary device to prevent the rope from unnecessarily detaching from the hook, and a gap is created between the hook and the hook, which is smaller than the diameter of the rope, but allows the hook to rotate freely. It is also placed.

In addition, the device of the present invention can be made to be able to move up and down as a whole so that it can be stored below the deck, or if it is made to be able to be raised freely so that it can be laid down on the deck, the catch can be transferred to the fish hold. It is convenient because it does not get in the way during various other operations, and whether it can be moved up and down or raised up and down should be decided according to the form of the fishing boat itself, and the mechanism is not particularly limited and can be any known mechanism. can be adopted.

<Effects of the invention> As described above, according to the invention, the dropping of Boat No. 1 can be done remotely using pneumatic or hydraulic cylinders without having to do so directly, ensuring safety. Moreover, the hook is not supported directly by the cylinder rod, but is supported via a stopper arm, and by selecting the installation position of the stopper arm, the lifting force by the rod while holding Boat No. 1 can be reduced. Since the cylinder can be made small, there is no need to install a very strong spring on the exterior, and therefore a small cylinder itself is sufficient.

Furthermore, the device of the present invention can be moved up and down by various known means.
It can be raised and lowered at will, thereby further increasing the efficiency of fishing work.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of the present invention, Fig. 2 is a partially cutaway front view of the same, Fig. 3 is an explanatory diagram of the same in use,
FIG. 4 is an explanatory diagram of a conventional stopper. In the figure, 1... mount, 2... hook, 3... stopper arm, 4... cylinder, 5... spring.

Claims (1)

[Scope of utility model registration request] A hook is rotatably attached to the top of a stand installed near the stern of a fishing boat, with its central part pivoted, and the hook has a recess for hanging a rope at one end and a stopper arm at the other end. A stopper arm has a mooring step, and has a rotating shaft at a location a short distance from the hook toward the bow, and the tip thereof is moored to the stopper arm mooring step of the hook, The first detachment of a large purse seine fishing boat, characterized in that the tip of a rod of a cylinder arranged at the bottom is pivotally connected, and the outer periphery of the rod is covered with a spring having a biasing force that causes the rod to extend. Device.