JP6691949B2 - Claw of seafood collecting tool - Google Patents

Description

  The present invention relates to a claw of a fish and shellfish collecting tool for collecting scallops and the like.

  As a tool for catching scallops that live about 3 cm below the seabed, a large rake-shaped fishing gear called the Yakushaku has long been used. FIG. 1 is a diagram showing an example of such a conventional shaku. As shown in the enlarged view of FIG. 1 (b), the eight shaku 200 shown in the overall view of FIG. 1 (a) has a plurality of claws 110 of fish collecting tools via a handle 230 attached to a horizontal bar 220. Are attached in a comb shape.

  As shown in FIG. 2, in the claw 110 of the conventional fish and shellfish collecting tool, an action portion that includes one end 111 a and a base portion 112 that is attached to the handle 230 by the bolt hole 118 to the other end 111 b and that excavates soil on the seabed. The main body 111 extends toward 113. In the action part 113, a plate-shaped cemented carbide piece 121 is attached to one edge 111c extending in the longitudinal direction of the main body 111 so as to withstand friction when excavating soil.

  The eight shaku 200 shown in FIG. 1A has its seabed pulled by a tow rope (not shown) attached to the pull tab 210. At this time, as shown in FIG. 3, in the claw 110 of the fish and shellfish collecting tool, the action portion 113 bites into the soil 300 on the seabed for about 10 cm, and the cemented carbide piece 121 of the action portion 113 scrapes up the soil 300 on the seabed. The scallops 310 and the like submerged in the soil 300 can be collected in the bag-shaped net 250 (see, for example, references 1 and 2).

Japanese Utility Model Publication 3-2141 Japanese Utility Model Publication No. 4-108329

  By the way, since the shell of a scallop shell is vulnerable to impact, it sometimes collided with the cemented carbide piece 121 when the seafood soil 300 was scratched by the claw 110 of the fish and shellfish collecting tool, and cracked due to the impact. For this reason, the scallop collected by the conventional eight shaku 200 using the claw 110 of the seafood collecting tool may be broken or damaged.

  The invention according to this application is proposed in view of the above circumstances, and an object thereof is to provide a nail of a fish and shellfish collecting tool that can collect a scallop without damaging it by impact. To do.

  In order to solve the above-mentioned problems, the nail of the fish collecting tool according to the present application includes a base portion to be attached to the fish collecting tool and an action portion for digging up soil on the seabed, and a direction from the base portion to the action portion. A main body made of steel extending in the longitudinal direction, and, in the action part, is attached to one edge extending in the longitudinal direction of the main body and includes a cemented carbide piece for digging soil, the cemented carbide piece is a surface orthogonal to the longitudinal direction. It has a round shape inside.

  The cemented carbide piece may have a part of a circle having a predetermined diameter in a plane orthogonal to the longitudinal direction. The main body may have a notch having a predetermined depth extending along one edge of the action portion, and the cemented carbide piece may be attached to the notch. The cemented carbide piece may be attached to the body by brazing.

  The invention according to this application prevents the scallops from cracking due to impact, and makes it possible to collect the scallops without damaging them.

It is a figure explaining the schematic structure of eight shaku. It is a perspective view which shows the nail | claw of the conventional seafood collection tool. It is a figure explaining the mode in which the nail | claw of the conventional seafood sampling tool is used. It is a perspective view which shows the nail | claw of the seafood sampling tool of this Embodiment. It is a trihedral view which shows the nail | claw of the seafood sampling tool of this Embodiment. It is a right side view for explaining a nail of a seafood sampling tool of this embodiment. It is a perspective view which shows the nail | claw of the seafood sampling tool of a modification.

  Hereinafter, the nails of the fish and shellfish collecting tool according to the present embodiment will be described in detail with reference to the drawings. FIG. 4 is a perspective view showing the nail of the fish and shells collecting tool of the present embodiment. FIG. 5 is a trihedral view showing the claws of the fish and shellfish collecting tool according to the present embodiment.

  The claw 10 of the fish collecting tool according to the present embodiment is attached to the main body 11 extending from the base portion 12 attached to the fish collecting tool toward the action portion 13 for excavating soil on the seabed, and the notch 14 of the action portion 13. And a cemented carbide piece 21 that has been formed.

  The main body 11 is made of steel, and has a substantially rectangular parallelepiped shape having a rod-like shape and a predetermined thickness, with the direction extending from the base portion 12 toward the action portion 13 being the longitudinal direction. The base portion 12 includes one end 11a of the main body 11 and can be attached to the seafood collecting tool to support the claw 10 of the seafood collecting tool. A bolt hole 18 for fixing to the fish collecting tool is formed in the base portion 12, and a bolt is inserted into the bolt hole 18 to be attached to the fish collecting tool.

  The action portion 13 has a function of digging over the soil on the sea floor, and a cemented carbide piece 21 having excellent wear resistance is attached to the soil digging portion so as to withstand friction when digging the soil. .. The action part 13 includes the other end 11b of the main body 11, and for attaching the cemented carbide piece 21, cuts of a predetermined depth along the one edge 11c extending in the longitudinal direction of the main body 11 from the other end 11b to a predetermined length. It has a chip 14.

  The cemented carbide piece 21 is made of cemented carbide having excellent wear resistance, such as a WC-based alloy containing Co, and is attached to one edge 11c of the main body 11 for excavating soil in the action portion 13. .. The cemented carbide piece 21 has a width corresponding to the width of the main body 11, a length corresponding to the length of the notch 14, a height corresponding to the depth of the notch 14, and the bottom surface 21a is brazed. It is attached to the notch 14.

  In the cemented carbide piece 21 of the present embodiment, the upper surface 21b has a rounded shape in the plane orthogonal to the longitudinal direction of the main body 11. In the present embodiment, this rounded shape may be a semicircle having a diameter corresponding to the predetermined thickness of main body 11. The rounded shape may include a part of a circle having a predetermined diameter, and is not limited to a part of the circle, and may include an arbitrary curve such as an ellipse or a quadratic curve.

  FIG. 6 is a right side view for explaining the claws of the seafood collecting tool of the present embodiment. FIG. 6A shows the claw of the fish and shellfish collecting tool according to the present embodiment. For comparison, FIG. 6 (b) shows the nail of the conventional fish and shellfish collecting tool of FIG. 2.

  As shown in FIG. 6A, in the claw 10 of the fish collecting tool according to the present embodiment, the cemented carbide piece 21 is notched by the bottom surface 21a having a thickness corresponding to the body 11 having a predetermined thickness. It is attached to 14. Further, the top of the upper surface 21b having the rounded shape is on the extension of the one edge 11c of the main body 11, and the upper surface 21b is included in the side surface of the main body 11 including the chamfered one edge 11c.

  In the claw 10 of the seafood collecting tool of the present embodiment, the upper surface 21b of the cemented carbide piece 21 for digging the soil on the sea floor has a rounded shape, and the scallop and the like can be dug up smoothly together with the soil on the sea floor. Therefore, the scallops are not cracked by being impacted, and the scallops can be collected without damage.

  Moreover, since the upper surface 21b of the cemented carbide piece 21 of the present embodiment has a rounded shape, the soil on the seabed can be dug up smoothly. Therefore, the resistance of pulling the nail 10 of the fish and shells collecting tool is reduced. In addition, the fuel economy of the boat that pulls the eight shaku with the claw 10 of the seafood collecting tool is improved.

  Further, since the upper surface 21b of the cemented carbide piece 21 of the present embodiment has a rounded shape and has no sharp edge, an operator is not injured by the edge. Further, the ship on which the claw 10 of the seafood collecting tool is mounted is not damaged by the edge.

  On the other hand, in the claw 110 of the conventional fish and shellfish collecting tool shown in FIG. 6B, a plate-shaped cemented carbide piece 121 is attached along one edge 111c of the main body 111, and the cemented carbide piece 121 has one edge 111c. Have edges along. Therefore, when excavating the soil on the seabed, the edge of the scallop collides with the scallop, and the scallop sometimes breaks due to the impact. Further, since the cemented carbide piece 121 for excavating the soil on the seabed is plate-shaped, the resistance when excavating the soil was large.

  In the nail 10 of the fish and shellfish collecting tool according to the present embodiment, one edge 11c of the main body 11 is chamfered, but the one edge 11c of the main body 11 is replaced by chamfering, and the upper surface 21b of the cemented carbide piece 21 is replaced. It may be formed in a rounded shape similarly to. The rounded shape of the one edge 11c of the main body 11 may be the rounded shape of the upper surface 21b of the cemented carbide piece 21 extended in the longitudinal direction of the main body 11.

  FIG. 7: is a figure which shows the modification of the nail | claw of the seafood sampling tool of this Embodiment. FIG. 7A shows a first modification, and FIG. 7B shows a second modification. In the first modified example of FIG. 7 (a) and the second modified example of FIG. 7 (b), the correspondence with the claw 10 of the fish and shellfish collecting tool of the present embodiment is made clear. A common code is used for the part to be performed.

  The claw 30 of the seafood sampling tool of the first modified example shown in FIG. 7A includes a main body 11 extending from a base portion 12 attached to the seafood sampling tool toward an action portion 13 for digging up soil on the seabed, and action. It has a cemented carbide piece 21 attached to the notch 14 of the portion 13.

  The main body 11 is made of steel and has a predetermined thickness with the direction extending from the base portion 12 toward the action portion 13 as a longitudinal direction, and the height gradually decreases from the base portion 12 toward the action portion 13. It has a unique shape. The base portion 12 includes one end 11a of the main body 11 and can be attached to the seafood collecting tool to support the claw 10 of the seafood collecting tool. In the claw 30 of the seafood collecting tool of the first modified example, one end 11a of the base portion 12 is attached by being welded to the seafood collecting tool.

  The action part 13 has a function of digging over the soil on the sea floor, and a cemented carbide piece 21 having excellent wear resistance is attached to the part where the soil is dug up. The action portion 13 includes the other end 11b of the main body 11, and in order to attach the cemented carbide piece 21, at one edge 11c extending in the longitudinal direction of the main body 11, a notch 14 having a predetermined depth from the other end 11b for a predetermined length. have. Moreover, it has the 2nd notch 16 which connects the other edge 11d extended along the longitudinal direction of the main body 11 facing the one edge 11c, and the other end 11b.

  The cemented carbide piece 21 has a width corresponding to the width of the main body 11 and a length corresponding to the length of the notch 14, and the bottom surface 21 a is brazed and attached to the notch 14. In the claw 30 of the fish and shellfish collecting tool of the first modified example, the height of the cemented carbide piece 21 is larger than the depth of the notch 14, and the cemented carbide piece 21 protrudes from the edge 11c in the height direction. ing.

  In the cemented carbide piece 21 of the claw 30 of the fish and shellfish collecting tool of the first modified example, the upper surface 21b has a rounded shape in the plane orthogonal to the longitudinal direction of the main body 11. In the claw 30 of the fish and shellfish collecting tool of the first modified example, the rounded shape may be a semicircle having a diameter corresponding to a predetermined thickness of the main body 11.

  In the claw 30 of the fish and shellfish collecting tool of the first modified example, the cemented carbide piece 21 projects from the one edge 11c of the main body 11. Therefore, when the cemented carbide piece 21 digs up soil on the seabed, the amount of soil toward the edge 11c can be reduced, and wear of the edge 11c of the main body 11 can be reduced.

  In addition, in the claw 30 of the fish and shellfish collecting tool of the first modified example, the main body 11 has a shape in which the height gradually decreases from the base portion 12 toward the action portion 13, and the action portion 13 has The second cutout 16 is formed. Therefore, the main body 11 is downsized and the weight is reduced.

  The claw 40 of the fish shellfish collecting tool of the second modified example shown in FIG. 7 (b) has a rounded shape of the upper surface 21 b of the cemented carbide piece 21 and the seafood of the first modified example shown in FIG. 7 (a). It is different from the claw 30 of the sampling tool. Other configurations are the same as those of the claw 30 of the fish and shellfish collecting tool of the first modified example.

  Also in the cemented carbide piece 21 of the claw 40 of the fish and shellfish collecting tool of the second modified example, the upper surface 21b has a rounded shape in the plane orthogonal to the longitudinal direction of the main body 11. In the claw 40 of the fish and shellfish collecting tool of the second modified example, this rounded shape is a rectangle of a predetermined height having a width corresponding to a predetermined thickness of the main body 11 in a plane orthogonal to the longitudinal direction of the main body 11. A semicircle having a diameter corresponding to a predetermined thickness of the main body 11 may be placed on the top.

  In the claw 40 of the seafood collecting tool of the second modified example, the height of the cemented carbide piece 21 is larger than that of the claw 30 of the seafood collecting tool of the first modified example. Further protrudes from one edge 11c of the main body 11. Therefore, when the cemented carbide piece 21 digs up soil on the seabed, the amount of soil toward the one edge 11c can be further reduced, and wear of the one edge 11c of the main body 11 can be further reduced. In addition, since the cemented carbide piece 21 has a sufficient height, it takes a long time to be worn and the life of the nail of the fish collecting tool is extended.

10 Claws of seafood collecting tool 11 Main body 12 Base portion 13 Action part 14 Notch 21 Cemented carbide piece 30 Claw of seafood collecting tool of the first modified example 40 Claw of seafood collecting tool of the second modified example

Claims (4)

A nail of a seafood collecting tool,
A base attached to the seafood collecting tool, and a working part for digging up soil on the seabed, and a steel main body extending in the longitudinal direction from the base toward the working part,
The action part includes a cemented carbide piece attached to one edge extending in the longitudinal direction of the main body and digging soil, the cemented carbide piece having a rounded shape in a plane orthogonal to the longitudinal direction. Claw of a similar tool.   The nail of the fish collecting tool according to claim 1, wherein the cemented carbide piece has a part of a circle having a predetermined diameter in a plane orthogonal to the longitudinal direction.   The said main body has a notch of a predetermined depth extended along one edge of the said action part, and the said cemented carbide piece is attached to the said notch, The seafood sampling tool of Claim 1 or 2. Claws of. The nail of the seafood collecting tool according to any one of claims 1 to 3, wherein the cemented carbide piece is attached to the main body by brazing.

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