JPS61119128A - Method for ear hanging of breeding shellfish - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for ear-hanging cultured shellfish, which is used to effectively submerge and retain young shellfish in water at the beginning of shellfish culture. It is something.

For example, in the cultivation of scallops, during the cultivation period that lasts for several years, each cultured shellfish is suspended and submerged in seawater in an unchanging state with its ears suspended. is stretched almost horizontally, and the upper ends of a large number of hanging ropes are tied and suspended in parallel at approximately regular intervals in the middle of the tether.

This hanging rope is made of coarsely braided rope or twisted rope, but in the middle of each hanging rope, there are multiple shells in multiple tiers at roughly the same vertical intervals. They are usually ear-hung, that is, each member is held on a prong-shaped rod that is passed through an ear hole drilled in the ear when the shell is initially young.

(Prior Art) Here, the manner in which each person hangs their ears in the conventional ear hanging method will be explained with reference to FIG. 7 and FIGS. W and 8.

A skewer-shaped threading rod 2 made of elastic resin is inserted into the middle of the hanging rope 1 by pushing it along the diameter line of the rope. )
Expanded protrusions 2a and 2b for preventing the from coming off, and one cross-shaped protrusion 2c are molded. It is prevented from falling out.

On the other hand, in the illustration, each of the three cultured shellfish A-C has an ear hole 3a drilled in its ear portion 3, and each of the cultured shellfish A-C has a
The ear holes 3a are inserted into the through rods 2 from either the left or right side, and the respective ears 3 are clamped into V-shaped notches at the bases of the flared protrusions 2a and 2b.

In addition, the number of cultured shellfish that can be attached to one rod)
is not particularly limited.

(Problem to be Solved by the Invention) However, according to such a conventional ear hanging method, since the diameter of the expanding protrusions 2a and 2b of the threading rod 2 is thick, the ear part of the cultured shellfish is It is necessary to open wide ear holes when the shellfish is young, and if you open the wide ear holes when the shellfish is young, it will have a negative effect on the growth of the shellfish, so there is the hassle of having to wait for the shellfish to grow to a mature level before hanging the ears. If the diameter of the threading rod is reduced in order to ear-hung young shellfish, there is a problem in that the threading rod is likely to break during the culture period, causing the cultured shellfish to fall off.

Another disadvantage is that having a cross-shaped protrusion in the middle of the rod makes it difficult to mechanize the ear-hanging process.

Therefore, the present invention makes it possible to hang the young shellfish by opening small ear holes that do not harm the growth of the young shellfish, and there is no risk of the shellfish falling off during culture, and it is possible to mechanize one operation. The purpose of the present invention is to provide a method for hanging cultured shellfish by ear, which makes it easy to do so.

(Means for Solving the Problems) In order to achieve the object, in the method of the present invention, a large number of cultured shellfish are held by ear hangings midway through a hanging rope suspended from just below the sea surface. In the ear hanging method, a threading rod made of a skewer-shaped rod made of elastic resin is pushed along the diameter line of the hanging rope and penetrated, and the required side of the penetrating portion of the threading rod is A method in which an ear hole made in the ear part of the cultured shellfish is inserted through the ear hole, and flat wide parts are formed on both sides of the ear hole insertion hole of the above-mentioned rod by crushing action by a press means. are taken.

(Example) Hereinafter, the method of the present invention will be specifically described with reference to FIGS. 1 to 6.

First Example (Figs. 1 to 3 (a), ■)) The threading rod 4 used in the method of this example is made of elastic resin, as shown in Figs. 1 and 2. It is a round rod with a diameter of about 1.5 fi, and one tip 4a is cut sharply, and the other base end is previously formed into a flat wide part 4b by pressing.

When the cultured shellfish A to C are ear-hanged, the operations are carried out in the following order.

・(1) Attachment of shellfish C to threading rod 4 (Fig. 3(a))
First, insert the ear hole 5a of the ear part 5 of the shellfish C into the tip part 4a of the rod 4.
After inserting it from the beginning, insert it until it hits the wide part 4b.

Next, the right side of the shell C of the threading rod 4 is crushed using a press machine or the like to form a wide part 6A, and the shell C
to prevent it from falling out.

(2) Attaching the shell B to the through rod 4 (Fig. 3 (a)) First,
A wide portion 6Bt- is similarly formed at a position spaced apart from the wide portion 6A by an appropriate distance.

Next, in the same manner as in the previous section, it is inserted until it hits the SBe wide portion 6B, and then the wide portion 6Ct- is formed in the same manner as in the previous section.

(3) Attaching the threading rod 4 to the hanging rope 1 (Fig. 3(b)
)) First, after forming the wide part 6D' at an appropriate distance from the wide part 6C, the tip 4a of the advancing rod 4 is inserted onto the diameter line of the hanging rope 1. , furthermore, wide part 6
Push through until D hits rope 1.

Next, a wide width tJ 6 E is formed symmetrically with the wide portion 6D, thereby preventing the through rod 4 from coming off.

(4) Attachment of shell A to the through-hole supplement 4 (as shown in Fig. 3) In the same manner as the above-mentioned attachment of tom shell B, attach the wide part 6F and the wide part 6G that holds the ear part 5 of shell A. This completes the ear hanging work.

In the ear hanging method carried out in this manner, since the threading rod 4 is in the shape of a round bar at the time when the cultured shellfish is inserted, the ear hole 5a that is opened in the ear part 5 of each cultured shellfish A and C is The thickness of the threading rod 4 is small enough to fit loosely into the threading rod 4, so even if the young shellfish are hung by ear, it will not affect their growth, and the threading rod 4 will not break during the cultivation period. There is no danger.

Further, the press forming of the wide portions 68 to 6F of the through rod 4 can be performed using simple tools, so it is easy to use a motor such as an air press or an electric press.

Second embodiment (Fig. 4 to Fig. 6 (a), Φ eye d
The through rod 7 used in the method of this embodiment is made of elastic resin and has a diameter of 1.5 mm, as shown in FIGS. 4 and 5.
5101 is a skewer-shaped member in which a pair of mutually opposing expanding protrusions 7 a r 7 b for preventing slippage is formed in the middle of the round bar body before and after, and the tips 7 C at both ends thereof are sharp. It is cut into.

When the cultured shellfish A to C are hung by ear, the operations are carried out in the following order.

(11 Attaching the threading rod 7 to the hanging rope 1 (Fig. 6 (a)
)) First, one of the ends (for example, the right side in the drawing) of the tip 7C is inserted onto the diameter line of the hanging rope 1, and then the through rod 7 is expanded and pushed in until the protrusion 7b hits the rope 1.

Next, if you forcefully push in the expansion protrusion 7b while lying down,
By expanding the through-hole of the hanging rope 1, which has a rough texture and has hangability, the expansion protrusion 7b slips out of the through-hole and stands up on the side surface of the rope 1. Locked in both directions.

(2) Attaching the slot A to the through rod 7 (Fig. 6(b)) First.
Expansion “b 2>-1p”i1”! Open the i'''M8 and form a wide part 8A at the 1◇ position using the same method as for the through rod 4 of the first embodiment, and then insert the ear hole 5a of the shellfish A from the right side of the drawing. On the top, the wide portion 8B is completely formed.

(3) 1iliL bar 7 (DB B, i C
tD installation (Fig. 6 (b)) First, a wide part 8C was formed at a position with an appropriate distance from the expansion protrusion 7a, and as a first step, it was inserted from the left side in the drawing of the ear hole 5ai of shell B. At the top, a wide portion 8D is formed.

In order to attach the shell C, repeat the above-mentioned method (LT) and prevent the shell C from coming off using the wide portions 8E and 8F.

The method of this embodiment is different from that of the first embodiment only in the structure for preventing the one-through rod 7 from coming off.

The functions and effects of the method of this embodiment are similar to those of the first embodiment.

It goes without saying that the number of cultured shellfish attached to the rods of each of the above embodiments can be increased or decreased as desired. The intermediate wide portions other than the wide portions at the proximal end and the distal end may be omitted as appropriate.

(Function) (Effects of the Invention) As stated above, if the method for hanging cultured shellfish ears according to the present invention is implemented, a round rod can be passed through the hanging rope at a required point in the middle of the hanging rope. Attached to the lowering rope,
Since the cultured shellfish whose ear hole is inserted into the rod is prevented from coming out by a wide part press-formed in the middle of the rod, it is possible to effectively hang the young shellfish by ear. This method has the effect of improving the practicality of shellfish culture, such as preventing shellfish from falling off during the culture period and facilitating the mechanization of ear-hanging work.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a threading rod used in the ear hanging method according to the first embodiment of the present invention, FIG. 2 is a side view of the same, and FIG.
) and FIG. 3('b) are plan views of the threading rod during the process of ear hanging work, and FIGS. 4 to 6(a) and FIG. FIGS. 7 and 8 are diagrams of the threading rod in the ear hanging method, and correspond to FIGS. 1 to 3 (a) and 3 (b), respectively, and FIGS. It is an explanatory diagram of the aspects between the work steps in the ear hanging method ^ A, B, C... Cultured shellfish, 1... Hanging rope, 4° 7... Threading rod, 4 a, 7 c-= Tip, 4b
, 7a. 7b... wide @ part and widening protrusion as means for preventing slippage, 5... ear part, 5a... ear hole, 6A~6G, 8A~
8F...Wide section. Figure 1 Figure 3 ((1)

Claims (2)

[Claims] (1) In the ear-hanging method, a large number of cultured shellfish are held in the middle of a hanging rope that is suspended into the water from just below the sea surface.The ear-hanging method consists of a skewer-shaped rod made of elastic resin. The threading rod is pushed along the diameter line of the hanging rope and passed through the rope, and the ear holes drilled in the ears of the cultured shellfish are inserted into required locations on both sides of the penetrating portion of the threading rod, and A method for hanging cultured shellfish by ear, characterized in that at least the outer side of the ear hole insertion part of the rod is crushed by a pressing means to form a flat wide part. (2) The method for hanging the ears of cultured shellfish according to claim 1, wherein means for preventing slipping off is provided on the side of the hanging rope penetrating portion of the rod.