JP2002051668A - Tine tip in scallop dredge net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems of tine tips which are fixed in the number of 9 to 21 tine tips to the base round bar of a shell-towing portion, at whose lower ends rectangular, pyramidal or cylindrical metal articles are used, and for which metal tines using coils are partially used for collecting the shells and the like on a sea bottom having such a problem that a sea bottom compris ing coarse sand is uneven and a half or more of scallops are left on the bottoms of the dents on the sea bottom without being collected, and a problem that the decrease in a collecting rate and the crush of the shell from the upper side are caused, because the lower ends of the tine tips can not flip and float the shells from the lateral side. SOLUTION: This tine tips in the scallop dredge net comprises an arm portion 1A placed on the front side of the scallop dredge net in the traveling direction, the first tine 1B and the first connection fitting portion 1C, can be made at the lowest cost, can simply be replaced, even when worn out, and can directly flip the shells.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toe in a scallop girder having a novel structure.

[0002]

2. Description of the Related Art A conventional toe and scalloped girder net has the following configuration. State of the toe The toe of the girder net is installed in the shell pulling part, and plays an important role in scooping scallops and the like with the shaving chain in front of the lower net part of the bag net part. The girder net is towed by a fishing boat at a speed of about 1 m per second, and by moving on the seabed, scallops etc. hit the toes and the oyster chain, and the shells floating above pass between the oyster chain and the upper net, The net enters the bag net and is pulled up on board with the girder net and caught. I. 9 to 21 toes are fixed diagonally to the rear in the advancing direction on the round bar for the shelling portion, and the lower end thereof is made of a rectangular, square or cylindrical metal. The parent nail is also a conventional toe. B. From 1998, the so-called “coil claw” (1998 Utility Model Registration Application No. 3353, Registration No. 3056753)
No., metal claws using coils to pick up seabed shells, etc.)
Some are also used.

The state of the scallop girder net The scallop girder net is called a girder net, eight shakus, manganese, etc., and is connected by a wire or a rope from a fishing boat, and is a fishing gear for catching scallops and the like by towing the seabed. It is. The structure of the girder net consists of a rake like a rake on the front side in the direction of travel, flipping shellfish etc. with a toe, scooping it with a shaving chain of a sack net connected to the back side, collecting it in a bag and collecting it with the girder net Retrieved and caught on board.

[0004]

The above-mentioned prior art has the following problems. Problems with toes Conventionally, girder nets were created based on experience and imagination from the ship, but in recent years, with the development of underwater cameras, the movement of
It became possible to watch it as a video, and it was confirmed that there were the following problems. I. On the rough sandy floor, there are irregularities with a depth beyond imagination,
More than half of the scallops lived without being caught at the bottom of the recess. As a result, the lower end of the toe flips the shell from the side and cannot float, and it passes over the shell and falls below the bag net, lowering the net entry rate, crushing the shell from above, and breaking the shell. And the occurrence of broken shellfish. B. There are coarse sand, fine sand, ballas, stones, etc. in the bottom of the sea floor, and in places with hard coarse sand and fine sand, the toes do not pierce the sea floor,
In the place of soft ballas and pebbles, the toes are stuck too much,
Unnecessary miscellaneous materials such as empty shells and pebbles are mixed in, and much time and effort have been spent on sorting on board. C. In a coil claw, a set bolt at a connecting portion between a coil portion and a toe is loosened, an angle of a toe is changed or dropped, and a lot of time and labor is spent for daily inspection and repair.

Problems with Scallop Girder Nets Conventional girder nets have the following problems due to the way nails are stabbed due to differences in the hardness of the seabed. I. When tough hard sand or fine sand on the seabed is towed, the seabed has irregularities and many shells live in the depressions, so the net entry rate is low, and many broken and broken shells are generated and collected. There is a problem that the rate is low, and a lot of time and labor is required for sorting them on board, which increases the working time and reduces the freshness of the shellfish. B. In places such as soft bals and pebbles on the seabed, the toes are too stuck, unnecessary unnecessary shells and pebbles are dug out, and they enter the bag net, requiring a lot of time and labor to sort them. Become. C. In a coil claw, there is a problem in that a set bolt at a connection portion between a coil portion and a toe is loosened, so that much time and labor is required for daily inspection and repair, and it is costly. D. In rare cases, when operating in a place with rocks or rocky reefs, rocks, etc. may hit the mounting pipe, causing bending or breakage.

[0006] The present invention has been made in view of such problems of the prior art, and an object of the present invention is to provide one that can solve the above-mentioned problems.

[0007]

Means for Solving the Problems In order to achieve the above object, the present invention is as follows. The invention according to claim 1 comprises an arm portion 1A, a first claw 1B, and a first connection fitting portion 1C which are located on the front side in the traveling direction of the scallop girder net, and the arm portion 1A is not easily worn other than a piano wire. A coil portion 1A1 formed substantially at the center of a wire having a predetermined length suitable for a coil spring, and a front rod portion 1A2 extending slightly forward and obliquely upward from the coil portion.
And a rear rod portion 1A3 extending slightly horizontally behind the coil portion, and at the tip of the front rod portion 1A2,
A front bent portion 1A21 for connection to a scallop girder net formed in a substantially U-shape in a plane is formed, and a rear bend for connecting a connecting bracket portion bent at a rear end of the rear rod portion 1A3 obliquely downward to the side. 1A31 is formed, the first claw 1B is formed into a vertical rod shape of a predetermined length using a wire material such as a piano wire or the like which is hard to wear, and the first connection fitting portion 1C is centered on the arm portion when viewed from the front in the traveling direction. The left holding plate 1C1 and the right holding plate 1C2 are arranged symmetrically with each other, and the left holding plate and the right holding plate are formed in a substantially inverted L-shape on the side. A curved surface 1 having a semicircular cross section that matches the outer circumference of the rear rod portion 1A3 in the arm portion is located above the right holding plate.
C11 and 1C21 are formed, and a rear bent portion 1A31 of the arm portion is provided at a center position between the left holding plate and the right holding plate.
Curved surfaces 1C12, 1C2 having a semicircular cross section that match the outer circumference of
2 are formed, and vertically curved surfaces 1C13 and 1C23 having a semicircular cross section are formed at positions below the left and right holding plates so as to correspond to the outer periphery of the upper end of the first claw 1B. The holding plate is configured to be tightened by a tightening bolt B.

According to a second aspect of the present invention, in the first aspect of the present invention, an arm portion 1A, a second claw 2A, and a second connecting fitting portion 2B are provided on the front side in the traveling direction of the scallop girder net. The claw 2A includes a claw mounting plate 2A1 and a claw body 2A2,
The nail mounting plate 2A1 is formed of a rectangular shape having a vertically long side surface and is attached to a lower end portion of the nail 2A11 in a state orthogonal to a traveling direction, and a nail mounting plate 2A1 projecting above the nail axis. The claw body 2A2 is composed of a locking piece 2A12.
Is a coil portion 2A2 formed at a substantially central position with a wire material suitable for a coil spring that is hard to wear, such as a piano wire.
1 and upper and lower vertical bars 2A22 extending up and down of the coil portion,
After the claw shaft 2A11 is passed through the coil portion 2A21 of the claw main body, the upper end of the upper vertical bar 2A22 is locked by the claw locking piece 2A12, and the second connecting metal part 2 is formed.
B is composed of a left holding plate 1C1 and a right holding plate 1C2 symmetrical to each other with the arm portion as the center when viewed from the traveling direction, and the left holding plate and the right holding plate are substantially side surfaces. A curved surface 1C11, 1C21 having a semicircular cross section is formed at the upper position of the left holding plate and the right holding plate so as to correspond to the outer periphery of the rear rod portion 1A3 in the arm portion.
At the center of the left and right holding plates, curved surfaces 1C12 and 1C22 each having a semicircular cross section are formed so as to correspond to the outer periphery of the rear bent portion 1A31 of the arm portion, and the left and right holding plates are formed. A step 2B1 is formed at a lower position of the step 2B1 so as to coincide with the outer periphery of the upper portion of the claw mounting plate 2A1, and
The two holding plates and the claw mounting plate are configured to be tightened by the tightening bolt B.

According to a third aspect of the present invention, in the first aspect of the invention, there is provided an arm 1A, a third claw 3A, and a third connecting fitting 3B which are located on the front side in the traveling direction of the scallop girder net. The claw 3A is composed of a claw mounting plate 3A1 and a claw main body 3A2. The claw mounting plate 3A1 is configured to be slightly narrower toward the lower side surface.
Is formed in an elliptical rod shape that is long before and after the cross section, and is vertically attached to the traveling direction side of the claw mounting plate 3A1, and the third connection fitting portion 3B is centered on the arm portion as viewed from the traveling direction front side. Symmetrical left clamping plates 1C arranged
1 and a right holding plate 1C2, the left holding plate and the right holding plate are formed in a substantially inverted L-shape on the side, and an arm portion is provided above the left holding plate and the right holding plate. The curved surface 1C1 having a semicircular cross section that matches the outer periphery of the rear rod portion 1A3
1, 1C21 are formed, and a curved surface 1C12, 1C22 having a semicircular cross section corresponding to the outer periphery of the rear bent portion 1A31 in the arm portion is formed at the center position of the left holding plate and the right holding plate. A stepped portion 3B1 corresponding to the outer periphery of the upper portion of the claw mounting plate is located below the holding plate and the right holding plate.
Are formed, and both the holding plate and the claw mounting plate are configured to be tightened by the tightening bolt B.

According to a fourth aspect of the present invention, in the first aspect of the present invention, an arm portion 1A, a fourth claw 4A, and a fourth connection fitting portion 4B are provided on the front side in the traveling direction of the scallop girder net. The claw 4A is composed of a claw mounting plate 4A1 and a claw main body 4A2. The claw mounting plate 4A1 is connected to a vertical plate 4A11 formed in a vertically long side surface at a lower end of the vertical plate in a state orthogonal to the vertical plate. Resistance plate 4A12 and a longitudinal groove 4 engraved at the left and right positions on the lower surface of the resistance plate.
A13, the nail main body 4A2 is formed in a vertical rod shape having an elliptical cross section and formed to have a predetermined length with a wire material that is hard to wear, such as a piano wire, and a resistance plate 4A of a nail mounting plate.
12 and is fixed to the lower surface of the fourth connecting metal part 4B.
Is composed of a left-side holding plate 1C1 and a right-side holding plate 1C2, which are arranged symmetrically with respect to the arm portion when viewed from the front in the traveling direction, and the left-side holding plate and the right-side holding plate are substantially opposite side surfaces. At the upper position of the left holding plate and the right holding plate, curved surfaces 1C11 and 1C21 having a semicircular cross section are formed at positions above the left holding plate and the right holding plate so as to correspond to the outer periphery of the rear rod portion 1A3 in the arm portion.
At the center of the left and right holding plates, curved surfaces 1C12 and 1C22 each having a semicircular cross section are formed so as to correspond to the outer periphery of the rear bent portion 1A31 of the arm portion, and the left and right holding plates are formed. A step portion 4B1 is formed at a position below the upper surface of the claw mounting plate so as to correspond to the outer periphery of the claw mounting plate, and both of the holding plate and the claw mounting plate are configured to be tightened with a tightening bolt B. It is assumed that.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments with reference to the drawings. Reference numeral 7 denotes a scalloped girder net to which the toe of the scrambled girder net of the present invention is attached, and is composed of a shelling portion 7A and a bag net portion 7B. A. The shell hauling part 7A is composed of the main claws 7A1 and the left and right shell hauling bodies 7A.
2, 7A2, a front pipe 7A3 for attaching a claw, and a rear pipe 7A4 for attaching a claw. a. The main claw portion 7A1 includes a base round bar 7A11 arranged in the left-right direction when viewed from the front, and main main claws 7A12, 7A1 that are downwardly connected to the base round bar obliquely rearward at a predetermined interval.
2,. . It is composed of b. The left and right shell pulling bodies 7A2, 7A2 are configured by bending a round bar material into a substantially sled shape on the side, and have a rear end of the upper side 7A21 and a lower side 7A2.
The rear end of A22 is connected to the above-mentioned main claws 7A12, 7A12,. . Of the left and right parent claws 7A12, 7A located at the left and right end portions
It is connected to the left and right parent claws located slightly inward from 12. c. The front pipe 7A3 for attaching the claw is a front pipe body 7A31 parallel to the round bar 7A11 for the base in the main claw portion.
And left and right connecting rods 7A32, 7A32 connected rearward to both ends of the front pipe body, and the left and right connecting rods 7A32, 7A32 are the main claws 7A12, 7A12,. .
Of the left and right parent claws 7A12, 7
It is connected to A12 so that the support angle can be adjusted. d. The rear pipe 7A4 for attaching the claw is a rear pipe body 7A41 parallel to the round bar 7A11 for the base in the main claw portion.
And left and right connecting rods 7A42, 7A42 connected rearward to both ends of the rear pipe body, and the left and right connecting rods 7A42, 7A42 are the main claws 7A12, 7A12,. .
Of the left and right parent claws 7A12, 7
It is connected to A12 so that the support angle can be adjusted.

B. The bag net portion 7B is connected to the rear of the shelling portion 7A, and includes portions called an upper net portion, a side net portion, a lower net portion, and a butt stick. Each is joined and made into a bag shape. a. The upper net portion 7B1 is on the upper side of the bag net and is made of a chemical fiber net. The front side is connected to the base round bar 7A11, the left and right sides are connected to the upper side of the side net portion 7B2, and the rear side is along the butt rod 7B3. It is connected. b. The side net portions 7B2 are on both sides of the bag net, and are connected to each other by a metal circular ring and a round washer passing therethrough to form a ring net. The front side of the bag net portion is connected to the rear sides of the main claws 7A12, 7A12 at the left and right ends, and the upper side is the upper net portion 7A12.
The lower side is connected to the side of B1 and the lower side is connected to the side of the lower net 7B4. The upper side of the rear side net portion is connected to the buttocks 7B3, the both side portions are respectively connected to the rear sides of the left and right side net portions, and the lower side is connected to the rear side of the lower net portion 7B4.

C. The lower net portion 7B4 constitutes the lower side of the bag net, and the hanging chains 7B4 each made of metal.
1, shaved chain 7B42, front net 7B43, ring net 7
There is a part called B44. I. The hanging chain 7B41 is a chain connected by a screw shackle to a chain hanging hole attached to the rear lower end of all the main claws 7A12, has an appropriate length in the front-rear direction, and is connected to the shaved chain at the rear. . The lower front part of the side net is connected to the upper side of the suspension chain at both left and right ends. B. The shaving chain 7B42 is a chain attached in the left-right direction, is attached longer than the interval between the adjacent main claws 7A12, and has slack. The front side is connected by a hanging chain from each of the main claws 7A12. C. The front net 7B43 is made of an ordinary rhombus mesh with a metal wire, the front side is connected to a shaved chain, and the rear side is connected to the ring net 7B44 in a belt shape. D. The ring net 7B44 constitutes most of the lower net portion, and is formed in a net shape by connecting circular rings with round washers. The lower net 7B4 is composed of the above-described parts,
A suitable space is provided from the lower end of the main nail by B41, a front side is constituted by a shaving chain 7B42, both left and right sides are connected to lower sides on both sides of the side net portion 7B2, and a rear side is a lower side of the rear side net portion lowered from the buttocks. It is connected.

C. Toes 1, 2, 3, 4 for the front pipe 7A3 for nail attachment and the rear pipe 7A4 for nail attachment
Are as follows. A pedestal in which a vertical mounting hole 7C is opened in each of these pipes, and a groove for receiving a front bent portion 1A21 for connection to a front pipe and a rear pipe in each arm portion is formed on the upper surface of the mounting vertical hole. 7C1 is placed, and a front bending portion for connection is fitted thereto. Then, a holding plate 7C2 is placed on the upper surface, and tightened with vertical bolts 7C3.

Reference numeral 1 denotes a toe in the scallop girder net of the first invention, and an arm portion 1A located on the front side in the traveling direction of the scallop girder net.
And a first claw 1B and a first connection fitting 1C. A. The arm portion 1A extends from a coil portion 1A1 formed substantially at the center of a wire having a predetermined length suitable for a coil spring, such as a piano wire, which is hard to wear, and a slightly obliquely upward direction in front of the coil portion. Outgoing front rod 1A2
And a rear rod portion 1A3 extending slightly horizontally behind the coil portion, and at the tip of the front rod portion 1A2,
A front bent portion 1A21 for connection to a front horizontal pipe and a rear horizontal pipe of a scallop girder net formed in a substantially U-shaped plane is formed, and a rear end of the rear rod portion 1A3 is bent obliquely downward on the side. The formed rear bent portion 1A31 for connecting the fittings is formed. B. The first claw 1B is formed in a vertical bar shape having a predetermined length by using a wire material that is hard to wear, in addition to a piano wire or the like. C. The first connecting metal part 1C is a symmetrical left holding plate 1C1 arranged about the arm as viewed from the front side in the traveling direction.
And a right holding plate 1C2. The left holding plate and the right holding plate are formed in a substantially inverted L-shape on the side, and the upper portion of the left holding plate and the right holding plate has an arm portion. A curved surface 1C1 having a semicircular cross section that matches the outer periphery of the rear rod 1A3
1, 1C21 are formed, and a curved surface 1C12, 1C22 having a semicircular cross section corresponding to the outer periphery of the rear bent portion 1A31 in the arm portion is formed at the center position of the left holding plate and the right holding plate. Below the holding plate and the right holding plate, vertical curved surfaces 1C13 and 1C23 each having a semicircular cross section are formed so as to correspond to the outer periphery of the upper end of the first claw 1B. It is configured to be tightened.

The effect of the first claw 1B is as follows. A. Can be manufactured at the lowest cost. B. Easy replacement even if worn. C. It works directly to repel shells.

Reference numeral 2 denotes a toe in the scallop girder net according to the second invention, and an arm portion 1A located on the front side in the traveling direction of the scallop girder net.
And a second claw 2A and a second connection fitting 2B. A. The arm 1A has the same configuration as the arm 1A in the first invention. B. The second claw 2A includes a claw mounting plate 2A1 and a claw body 2A2,
2A2. a. The claw mounting plate 2A1 is formed in a rectangular shape having a vertically long side surface.
A claw shaft 2A11 attached to the lower end portion and perpendicular to the traveling direction, and a claw locking piece 2 protruding above the claw shaft
A12. b. The claw body 2A2 is composed of a coil portion 2A21 formed at a substantially central position with a wire material suitable for a coil spring that is hard to wear in addition to a piano wire, and upper and lower vertical bars 2A22 and 2A23 extending up and down of the coil portion. . c. After penetrating the claw shaft 2A11 through the coil portion 2A21 of the claw body, the upper end of the upper vertical bar 2A22 is fixed to the claw locking piece 2A.
12. C. The second connecting metal part 2B is a symmetrical left holding plate 1C1 arranged about the arm part as viewed from the traveling direction side.
And a right holding plate 1C2. The left holding plate and the right holding plate are formed in a substantially inverted L-shape on the side, and the upper portion of the left holding plate and the right holding plate has an arm portion. A curved surface 1C1 having a semicircular cross section that matches the outer periphery of the rear rod 1A3
1, 1C21 are formed, and a curved surface 1C12, 1C22 having a semicircular cross section corresponding to the outer periphery of the rear bent portion 1A31 in the arm portion is formed at the center position of the left holding plate and the right holding plate. A step portion 2B1 is formed below the holding plate and the right holding plate so as to correspond to the outer periphery of the upper portion of the claw mounting plate 2A1, and both the holding plate and the claw mounting plate are tightened with the tightening bolt B. It is configured as follows.

The effect of the second claw 2A is as follows. A. Since the coil portion 2A21 has elasticity, even if the lower vertical bar 2A23 serving as the tip of the claw becomes thin, it can withstand various impacts on the sea floor. B. The narrower the tip of the nail, the better the sting in fine sand and the easier the shell is to repel.

Reference numeral 3 denotes a toe in the scallop girder net according to the third invention, and an arm portion 1A located on the front side in the traveling direction of the scallop girder net.
And a third claw 3A and a third connection fitting 3B. A. The arm 1A has the same configuration as the arm 1A in the first invention. B. The third claw 3A includes a claw mounting plate 3A1 and a claw body 3A2. a. The nail mounting plate 3A1 is configured to be slightly narrower toward the lower side. b. The claw body 3A2 is formed in an elliptical rod shape that is long before and after the cross section, is vertically attached to the traveling direction side of the claw attachment plate 3A1, and is provided on the front half of the claw body 3A2 in the traveling direction for reinforcement. Cemented carbide 3A21 is attached. C. The third connecting metal part 3B is a symmetrical left holding plate 1C1 arranged about the arm part when viewed from the front side in the traveling direction.
And a right holding plate 1C2. The left holding plate and the right holding plate are formed in a substantially inverted L-shape on the side, and the upper portion of the left holding plate and the right holding plate has an arm portion. A curved surface 1C1 having a semicircular cross section that matches the outer periphery of the rear rod 1A3
1, 1C21 are formed, and a curved surface 1C12, 1C22 having a semicircular cross section corresponding to the outer periphery of the rear bent portion 1A31 in the arm portion is formed at the center position of the left holding plate and the right holding plate. A stepped portion 3B1 corresponding to the outer periphery of the upper portion of the claw mounting plate is located below the holding plate and the right holding plate.
Are formed, and both the holding plate and the claw mounting plate are configured to be tightened by the tightening bolt B.

The effects of the third claw 3A are as follows. A. Little wear compared to other nails. B. Less time to replace toes. C. Relatively simple to manufacture.

Reference numeral 4 denotes a toe in the scallop girder net according to the fourth invention, and an arm portion 1A located on the front side in the traveling direction of the scallop girder net.
And a fourth claw 4A and a fourth connection fitting 4B. A. The arm 1A has the same configuration as the arm 1A in the first invention. B. The fourth claw 4A includes a claw mounting plate 4A1 and a claw body 4A2. a. The claw mounting plate 4A1 includes a vertical plate 4A11 formed in a rectangular shape having a vertically long side surface, a resistance plate 4A12 connected to a lower end of the vertical plate in a state orthogonal to the vertical plate, and a left and right position on the lower surface of the resistance plate. It is composed of a groove 4A13 in the front-rear direction carved. b. The claw main body 4A2 is formed in a vertical rod shape having an elliptical cross section formed of a predetermined length using a wire material that is difficult to wear, such as a piano wire, and a cemented carbide alloy is provided on the front half of the claw body 4A2 in the traveling direction for reinforcement. 4A21 is attached to the resistance plate 4A12 of the nail mounting plate and is fixed to the center of the lower surface thereof. C. The fourth connecting metal part 4B is a symmetrical left holding plate 1C1 disposed about the arm as viewed from the front in the traveling direction.
And a right holding plate 1C2. The left holding plate and the right holding plate are formed in a substantially inverted L-shape on the side, and the upper portion of the left holding plate and the right holding plate has an arm portion. A curved surface 1C1 having a semicircular cross section that matches the outer periphery of the rear rod 1A3
1, 1C21 are formed, and a curved surface 1C12, 1C22 having a semicircular cross section corresponding to the outer periphery of the rear bent portion 1A31 in the arm portion is formed at the center position of the left holding plate and the right holding plate. A stepped portion 4B1 corresponding to the outer periphery of the upper part of the claw mounting plate is provided below the holding plate and the right holding plate.
Are formed, and both the holding plate and the claw mounting plate are configured to be tightened by the tightening bolt B.

The effects of the fourth claw 4A are as follows. A. Even when the hardness of the sea bottom changes, the force at which the lower part of the claw body 4A2 tries to stab into the ground corresponds to the force at which the resistance surface 4A12 tries to float, and stabs at a certain depth, I was able to scallop and gravel while pulling it up. B. The force acting on the upper resistance surface 4A12 was reduced toward the concave portion of the unevenness, and the lower portion of the claw body 4A2 was quickly stabbed, contacted from below the shell, and the probability of floating the shell upward was increased. C. By using a metal with low wear for the claw body 4A2, wear was extremely reduced, the original shape and function were maintained, and replacement work was almost eliminated. D. Sand dug up at the lower part of the nail body 4A2
As it entered under A12, it was held down by this resistance surface, and the amount of sand that flew was reduced, and the mixing of sand with shellfish was reduced. E. FIG. Resistance surface 4A12 that has widened toe 4A in the traveling direction
Is formed, and when the claw body 4A2 passes through the edge of the concave portion on the seabed, the lower lateral side of the resistance surface 4A12 hits the shallow side of the dent on the seabed, and the claw body 4A2 is pushed laterally toward the deeper dent. It is recognized that many shellfish live on the deep side of the dent, the probability that the nail body 4A2 comes into contact with the shell increases, and the nail body 4A2 is less likely to be pushed back by the shell, and the shell is moved to the bottom of the dent on the seabed. The probability of floating from is increased.

The relationship between the scallop girder net 7 and the toes in each scallop girder net will be described. A. Compared with the conventional girder net, the distance between the front pipe 7A3 and the rear pipe 7A4 from the sea floor could be increased. Front rod 1 obliquely upward and forward from coil 1A1 of the arm
By forming A2, the front pipe 7A3 and the rear pipe 7A can be maintained without changing the height of the coil portion 1A1 from the sea floor.
4 could be raised. Even if there are obstacles such as rocks and reefs on the sea floor, the front pipe 7A3 and the rear pipe 7A4 collide, which has the effect of reducing breakage and bending, reducing the time required to suspend operation for repair and the cost of repair. . B. When operating with the toe 1 of the first invention attached to the front pipe 7A3 and the rear pipe 7A4, in addition to the effect of the preceding paragraph A, in addition to the effect of the previous girder net, the connection fitting is conventionally inserted and fastened with set bolts. Since the two holding plates 1C2 and 1C1 are configured to be tightened with the fastening bolts, the installation area of the arm portion with the rear bent portion 1A31 is increased, and an impact buffer such as rubber can be sandwiched. The set bolts and nuts are less loosened, resulting in a deviation of the angle of the claw body 1B in the traveling direction and the claw body 1B.
There is an effect that B falls off less. C. In the case where the toe 2 of the second invention is mounted on the front pipe 7A3 and the rear pipe 7A4 for operation, compared with the conventional girder net, the above-mentioned A.I. B. In addition to the above effects, when operating in a hard sea area where the bottom of the sea floor is tight, a thinner wire than before can be used for the claw body 2A2, and even with a tight girder, even a girder net of the same weight can sufficiently pierce the sea floor, The effect of excavating the shellfish buried in the sand and passing the shellfish to the upper side of the shaving chain 7B42 is enhanced, and there is an effect of improving the net entry rate.

D. The toe 3 of the third invention is connected to the front pipe 7A.
3. When operating with the rear pipe 7A4 attached, the A.A. B. In addition to the above effects, the cemented carbide 3A21 is mounted on the claw body 3A2, so that the claw body 3A2 is hardly worn, its shape is maintained for a long time, and the function of moving the shell from the lower lateral direction can be maintained for a long time. In addition, there is an effect of preventing a drop in the net entry rate and an increase in broken shells due to a change in the shape of the lower end of the nail main body, and there is almost no need to replace nails, which also has an effect of shortening the operation time. E. FIG. In the case where the toe 4 of the fourth invention is mounted on the front pipe 7A3 and the rear pipe 7A4 for operation, the toe A. B. D. In addition to the effects of a. Due to the configuration of the resistance plate 4A12, the lower end of the claw body 4A2 is stuck at a certain depth even in a sea area where the hardness of the sea floor changes and a fine sand, a muddy field, etc. Has the effect of preventing the entry of nets and the like and shortening the work of sorting shellfish and other miscellaneous substances on board. b. On the lower surface of the resistance plate 4A12, an engraved longitudinal groove 4A13 is formed, and the sand dug up by the claw body 4A2 is pressed by the lower surface of the resistance plate, returns to the sea floor without rising, and sand entering the shell is removed. It has the effect of reducing shellfish washing work on board and reducing sand biting. As described above, the effects of the previous section have reduced the time and cost of repair work compared to the conventional girder net, shortened the onboard work for sorting shellfish and miscellaneous goods, improved the net entry rate, reduced the number of broken shells, etc. Significant effects were observed in improving freshness, improving the recovery rate, shortening the working time of workers and reducing costs.

[0025]

Since the present invention is configured as described above, the following effects can be obtained. 1. Regarding the toe in the scallop girder network The toe 1 in the scallop girder net of the first invention is composed of an arm 1A, a first claw 1B, and a first connection fitting 1C located on the front side in the traveling direction of the scallop girder net, and the second invention The toe 2 in the scallop girder network of the present invention is composed of an arm portion 1A, a second claw 2A, and a second connecting fitting 2B located on the front side in the traveling direction of the scallop girder net. The arm 1A located on the front side in the traveling direction of the scallop girder net and the third
The toe 4 of the scallop girder net according to the fourth invention comprises an arm 1A, a fourth claw 4A, and a fourth connection metal part 4B which are located on the front side in the traveling direction of the scallop girder net. Therefore, the following effects can be expected.

A. Advantageous Effects of the Arm 1A is characterized by having elasticity, and has the following effects. a. The coil portion 1A1 has an effect of absorbing the up-and-down movement, vibration, and impact of the toes 1, 2, 3, and 4 transmitted from the rear rod portion 1A3 extending in a slightly horizontal state by winding it in a coil shape. In addition, the coil portion 1A1 is constantly compressed by the weight of the base round bar 7A11 and the like, and has the effect of moving up and down along irregularities while piercing the lower end portion of the toe on the seabed. b. A front rod portion 1A2 extending slightly obliquely upward and forward from the coil portion is a front pipe 7A for attaching a claw.
3. The front pipe 7A3 and the rear pipe 7A which are connected to the rear pipe 7A4 by the front bent portion 1A21, and
The height of the coil portion 1A1 does not change even when the coil 4 is installed at a position higher than the sea floor than the conventional case. During towing, there is an effect of reducing the probability that the front pipe 7A3 and the rear pipe 7A4 for attaching claws hit a rock or a reef and bend or break. c. The rear rod portion 1A3, which extends rearward from the coil portion 1A1 in a slightly horizontal state, is connected to the coil portion 1A1 and the connection fitting portion 1A.
C, 2B, 3B and 4B are connected, and a rear bent portion 1A31 is formed at the rear end.
Since the claw 1B, the second claw 2A, the third claw 3A, and the fourth claw 4A are formed substantially vertically from the seabed, there is an effect of fixing the angle by the rear bent portion 1A31. d. Each effect is added, the first nail 1B, the second nail 2
A, the third claw 3A and the claw body 4A2 are pressed against the sea floor,
It has the effect of stabbing and raising and lowering along the unevenness of the seabed, and has the effect of floating the shell with the first claw 1B, the second claw 2A, the third claw 3A, and the claw body 4A2. There is an effect of preventing the front pipe 7A3 and the rear pipe 7A4 from being damaged.

B. Effects that can be expected from the connecting metal parts The connecting metal parts 1C, 2B, 3B and 4B are metal fittings for connecting the arm and the toes 1B, 2A, 3A and 4A, and have the following effects. a. Rear bending portion 1A31 of the arm portion than the conventional connection fitting
And the curved surfaces 1C11 and 1C12 that are in contact with
Since the left holding plate 1C1 and the right holding plate 1C2 are configured to be tightened with bolts from the left and right, the first claw 1B and the second
When the impact and vibration of the claw 2A, the third claw 3A, and the fourth claw 4A are transmitted to the arm portion 1A3, the impact and vibration are not concentrated at one joint portion between the arm portion and the connection fitting portion, and the effect of reducing damage to the arm portion 1A3. There is. b. In the past, it was fixed with set bolts, but the impact or vibration caused by the tip of the toe going up and down on the seafloor loosens the set bolts and nuts, changing the angle of the tip to the side in the traveling direction or falling off the tip of the toe In many cases, looseness was often checked and repaired. Since the rear end of the arm portion is bent to form a rear bent portion 1A31, sandwiched between both holding plates, and tightened with bolts and nuts, the bolts are not loosened, and there is an effect of reducing repairs. c. Unlike the conventional connection fittings, tighten both holding plates with the tightening bolts B
, The rear bent portion 1A31 of the arm portion and the curved surface 1C1 having a semicircular cross section of both holding plates.
An impact buffer such as rubber can be interposed between the first and the first C21, which has an effect of reducing impact and vibration. 2. In addition, it has effects such as being inexpensive to manufacture, easy to assemble because of a small number of parts, and economical.

[Brief description of the drawings]

FIG. 1 is a perspective view of a scallop girder net.

FIG. 2 is an enlarged view of a main part in which a part of the above is cut away.

FIG. 3 is a schematic right side view illustrating the operation of the scallop girder net.

FIG. 4 is a cross-sectional view illustrating an arrangement state of claws.

FIG. 5 is an exploded perspective view of the front pipe for attaching the pawl and the rear pipe for attaching the pawl as viewed from the front.

FIG. 6 is an exploded perspective view for explaining a state of attachment to a front pipe for attaching claws or a rear pipe for attaching claws.

FIG. 7 is a schematic right side view of a main part illustrating a depth of the nail to the seabed.

FIG. 8 is a schematic right side view of a main part illustrating a depth of the nail to the seabed.

FIG. 9 is a perspective view of the toe of the first invention.

FIG. 10 is an exploded perspective view of the same.

FIG. 11 is a perspective view of a toe according to the second invention.

FIG. 12 is an exploded perspective view of the same.

FIG. 13 is a perspective view of a toe according to the third invention.

FIG. 14 is an exploded perspective view of the same.

FIG. 15 is an enlarged sectional view taken along line AA.

FIG. 16 is a perspective view of a toe according to a fourth invention.

FIG. 17 is an exploded perspective view of the same.

FIG. 18 is an enlarged perspective view of the claw main body according to the fourth invention as viewed from a lower surface direction.

FIG. 19 is an enlarged end view taken along line BB.

FIG. 20 is an enlarged right side view illustrating the operation.

FIG. 21 is an enlarged view of a main part of the above.

FIG. 22 is a right side view of a main part illustrating a state of supporting the toe according to the first invention.

FIG. 23 is a right side view of a main part illustrating a state of supporting a toe according to the second invention.

FIG. 24 is a right side view of a main part for explaining a state of supporting a toe according to the third invention.

FIG. 25 is a right side view of an essential part for explaining a state of supporting a toe according to the fourth invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toe in scallop girder net of 1st invention 1A Arm part 1B 1st claw 1C 1st connection fitting part 2 Toe in scallop girder net of 2nd invention 2A 2nd claw 2B 2nd connection fitting part 3 Scallop girder of 3rd invention Toe in the net 3A Third claw 3B Third connecting metal part 4 Toe in the scallop girder of the fourth invention 4A Fourth nail 4B Fourth connecting metal part 7 Scallop girder net 7A Shelling part 7B Bag net part

Claims (4)

[Claims] An arm (1A), a first claw (1B), and a first connection fitting (1) located on a front side in a traveling direction of a scallop girder net.
C), and the arm portion (1A1) has a coil portion (1A1) formed substantially at the center of a wire having a predetermined length suitable for a coil spring that is hard to wear, such as a piano wire.
A front rod (1A2) extending slightly obliquely upward and forward from the coil, and a rear rod (1A3) extending slightly horizontally behind the coil. At the tip of the front rod portion (1A2), a front bent portion (1A2) for connection to a scallop girder net formed in a substantially U-shaped plane is provided.
1) is formed, and a rear bent portion (1A31) is formed at the rear end of the rear rod portion (1A3) for connecting the connecting bracket portion bent obliquely downward to the side, and the first claw (1B) is a piano. The first connecting metal part (1C) is arranged symmetrically with respect to the left as viewed from the front in the traveling direction, and is arranged in a vertical rod shape having a predetermined length using a wire material such as a wire that is hard to wear. Board (1C
1) and a right clamping plate (1C2). The left clamping plate and the right clamping plate are formed in a substantially inverted L-shape on the side, and are located above the left clamping plate and the right clamping plate. A curved surface (1C11, 1C21) having a semicircular cross section that matches the outer periphery of the rear rod portion (1A3) in the arm portion is formed, and the center of the left holding plate and the right holding plate is located at the rear of the arm portion. A curved surface (1C12, 1C22) having a semicircular cross section is formed to coincide with the outer periphery of the bent portion (1A31), and the upper end outer periphery of the first claw (1B) is located below the left holding plate and the right holding plate. (1C13, 1C23)
And a toe in a scallop girder net, characterized in that both holding plates are configured to be tightened with a tightening bolt (B). 2. An arm (1A), a second claw (2A), and a second connection fitting (2) located on the front side in the traveling direction of the scallop girder net.
B), the second claw (2A) includes a claw mounting plate (2A1) and a claw body (2A).
A2, 2A2) and a nail mounting plate (2A1)
Is composed of a claw shaft (2A11) that is formed in a vertically long side surface and that is attached to the lower end portion and that is orthogonal to the traveling direction, and a claw locking piece (2A12) that protrudes above the claw shaft. The claw body (2A2) includes a coil portion (2A21) formed at a substantially central position with a wire material suitable for a coil spring that is difficult to wear, such as a piano wire, and an upper and lower vertical rod (up and down) extending vertically. 2A22, 2A23), and the claw shaft (2A1) is attached to the coil portion (2A21) of the claw body.
After penetrating through 1), the upper end of the upper vertical bar (2A22) is locked by the claw locking piece (2A12), and the second connecting metal part (2B) has the arm part viewed from the traveling direction side. Left-side symmetrical plates (1C
1) and a right clamping plate (1C2). The left clamping plate and the right clamping plate are formed in a substantially inverted L-shape on the side, and are located above the left clamping plate and the right clamping plate. A curved surface (1C11, 1C21) having a semicircular cross section that matches the outer periphery of the rear rod portion (1A3) in the arm portion is formed, and the center of the left holding plate and the right holding plate is located at the rear of the arm portion. A curved surface (1C12, 1C22) having a semicircular cross section is formed so as to correspond to the outer periphery of the bent portion (1A31), and the upper part of the claw mounting plate (2A1) is located below the left holding plate and the right holding plate. A step (2B1) corresponding to the outer circumference of
2. A toe in a scalloped girder net according to claim 1, wherein said two holding plates and said claw mounting plate are configured to be tightened with a tightening bolt (B). 3. An arm (1A), a third claw (3A), and a third connection fitting (3) located on the front side in the traveling direction of the scallop girder net.
B), and the third claw (3A) includes a claw mounting plate (3A1) and a claw body (3A).
A2), the claw mounting plate (3A1) is configured to be slightly narrower toward the lower side, and the claw main body (3A2) is configured to have an elliptical rod shape that is long before and after the cross section. The third connecting metal part (3B) is vertically attached to the traveling direction side of the claw mounting plate (3A1), and the third connecting metal part (3B) is arranged symmetrically with respect to the left holding plate ( 1C
1) and a right clamping plate (1C2). The left clamping plate and the right clamping plate are formed in a substantially inverted L-shape on the side, and are located above the left clamping plate and the right clamping plate. A curved surface (1C11, 1C21) having a semicircular cross section that matches the outer periphery of the rear rod portion (1A3) in the arm portion is formed, and the center of the left holding plate and the right holding plate is located at the rear of the arm portion. A curved surface (1C12, 1C22) having a semicircular cross section that matches the outer periphery of the bent portion (1A31) is formed, and at the lower position of the left holding plate and the right holding plate, at the outer periphery of the upper portion of the claw mounting plate. 2. A toe in a scalloped girder net according to claim 1, wherein a matching step (3B1) is formed, and both of said holding plate and said claw mounting plate are configured to be tightened with a tightening bolt (B). 4. An arm (1A), a fourth claw (4A), and a fourth connection fitting (4) located on the front side in the traveling direction of the scallop girder net.
B), and the fourth claw (4A) includes a claw mounting plate (4A1) and a claw body (4A).
A2), the claw mounting plate (4A1) is composed of a vertical plate (4A11) having a vertically long side surface and a resistance plate (4A) connected to a lower end of the vertical plate in a state orthogonal to the vertical plate.
A12) and front and rear grooves (4A13) engraved at the left and right positions on the lower surface of the resistance plate. The claw body (4A2) is made of a wire that is hard to wear, such as a piano wire, to a predetermined length. And a vertical bar having an elliptical cross section, and is fixed to the lower surface of the resistance plate (4A12) of the claw mounting plate by dropping, and the fourth connection metal part (4B) is arranged around the arm as viewed from the front in the traveling direction. Symmetrical left clamping plates (1C
1) and a right clamping plate (1C2). The left clamping plate and the right clamping plate are formed in a substantially inverted L-shape on the side, and are located above the left clamping plate and the right clamping plate. A curved surface (1C11, 1C21) having a semicircular cross section that matches the outer periphery of the rear rod portion (1A3) in the arm portion is formed, and the center of the left holding plate and the right holding plate is located at the rear of the arm portion. A curved surface (1C12, 1C22) having a semicircular cross section that matches the outer periphery of the bent portion (1A31) is formed, and at the lower position of the left holding plate and the right holding plate, at the outer periphery of the upper portion of the claw mounting plate. 2. A toe in a scalloped girder net according to claim 1, wherein a matching step (4B1) is formed, and both of said holding plate and said claw mounting plate are configured to be tightened with a tightening bolt (B).