JP5247735B2 - Tweezers for classification work - Google Patents

Description

  The present invention relates to tweezers for classification work, and in particular, relates to tweezers for classification work effective for classification work of bivalves among benthic organisms.

  In environmental surveys, benthic organisms (also called bentos) are collected from sediments such as the sea, rocks at the bottom of lakes, sandy land, and swamps, and the collected benthic organisms are classified according to type. Various surveys are conducted every time.

  For example, bivalves are picked up from collected benthic organisms, and the bivalve shell length is measured with a ruler to classify the picked bivalve into a plurality of shell lengths, and investigation is performed for each classification.

  When conducting surveys as described above, collect hundreds of bivalves, measure each bivalve shell length by placing each bivalve in the same direction and placing a ruler at the same position on each bivalve shell. Since it must be repeated, it takes a lot of time to classify bivalves.

  In order to increase the efficiency of the bivalve classification work as described above, a method of using tweezers with a scale as described in Patent Document 1 and grasping the bivalve with the tweezers with a scale and simultaneously measuring the shell length can be considered.

Japanese Utility Model Publication No.59-24263

  However, when holding a bivalve with graduated tweezers configured as described above, if it is gripped too much, the load may concentrate on one part of the shell of the bivalve and the shell may crack, and it may be weakly gripped. In this case, the bivalve may slide off the tweezers.

  In addition, you must grab the bivalve in the same direction with the tip of the tweezers and align the tweezers scale with the maximum dimension of the bivalve shell, so finely adjust the position of the bivalve after grasping the bivalve with the tip of the tweezers Must.

  Therefore, the tweezers with a scale having the above-described configuration cannot sufficiently increase the efficiency of the bivalve classification work.

  The present invention has been made in view of the conventional problems as described above, and an object of the present invention is to provide a tweezers for classification work that can efficiently classify benthic bivalves.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a bivalve sorting tweezers having a shell whose surface is formed in a curved surface, has a V shape with an open tip, and a grip portion that can be elastically deformed in the direction of narrowing the V shape, and a gripping portion having a pair of gripping plate provided integrally with the distal end of the grip portion, the inner surface of the respective gripping plates of the gripping portion, is formed in a concave curved surface, of the pair of gripping plates A scale is provided on at least one of the above.

According to the tweezers for classification work of the present invention, the clam is positioned between the two gripping plates of the gripping portion, and the gripping portion is elastically deformed in the direction in which the two gripping plates approach each other by gripping the gripping portion by hand. A bivalve is held between them. In this case, since the inner surface of each gripping plate is formed in a concave curved surface, the surface of the bivalve shell can be brought into surface contact with the inner surface of each gripping plate. Therefore, the bivalve does not slide down from between the two grip plates, and the load is not concentrated locally on the bivalve shell, so that the shell does not break, and the bivalve classification work can be performed efficiently. .
In addition, by grabbing the shell of the bivalve shell between the two gripping plates so that the two gripping plates are along the maximum dimension of the bivalve shell, apply the graduation of the gripping plate along the maximum dimension of the shell of the bivalve shell Therefore, the bivalve shell length can be measured at the same time while holding the bivalve, and the bivalve classification work efficiency can be further enhanced.

  Further, in the present invention, irregularities may be formed on the inner surface of each gripping plate.

  According to the tweezers for classification work of the present invention, the frictional resistance between the inner surface of each gripping plate and the surface of the bivalve shell can be increased by the unevenness of the inner surface of each gripping plate. Can be more effectively prevented from sliding off.

  Furthermore, in the present invention, a cushioning material may be provided on the inner surface of each gripping plate.

  According to the tweezers for classification work of the present invention, when a bivalve is gripped between both gripping plates, a cushioning material is interposed between the inner surface of both gripping plates and the surface of the shell of the bivalve shell. It is possible to prevent the load from being concentrated locally on the shell, and more effectively prevent the shell from cracking.

  Furthermore, in the present invention, each grip plate may be formed of a transparent body.

  According to the tweezers for classification work of the present invention, when the bivalve is grasped between the two grasping plates, the bivalve can be seen through from the outside of each grasping plate, so that the work of adjusting the scale to the maximum dimension portion of the bivalve shell is easy. Can be done.

  Furthermore, in this invention, it is good also as comprising so that the longitudinal direction of the said holding part may make a predetermined angle with respect to the longitudinal direction of the said grip part.

  According to the tweezers for classification work of the present invention, it is possible to efficiently perform the work of gripping the bivalve recovered on a tray or the like.

  Furthermore, in the present invention, at least the grip portion may be made of plastic.

  According to the tweezers for classification work according to the present invention, the hardness of both grips can be lowered as compared with the case where both grips are made of metal, so that when the bivalve is gripped between the grips, the shell of the bivalve is cracked. It can be prevented from occurring.

As described above, according to the tweezers for classification work of the present invention, when the bivalves are classified from the collected benthic organisms, the bivalves are not slid down from between the grasping plates of the grasping part, and The bivalve shell does not break. In addition, by grabbing the shell of the bivalve shell between the two gripping plates so that the two gripping plates are along the maximum dimension of the bivalve shell, apply the graduation of the gripping plate along the maximum dimension of the shell of the bivalve shell Therefore, the bivalve shell length can be measured simultaneously while holding the bivalve mollusc, and the bivalve classification work can be performed efficiently.

It is the schematic which showed the whole one Embodiment of the tweezers for classification work by this invention. It is A arrow directional view of FIG. It is the schematic which showed the modification of the holding part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of the tweezers for classification work according to the present invention. The tweezers 1 for classification work can be applied, for example, to the classification work of bivalve bivalves 10 and collect benthic organisms from sediments such as the seabed, rocks at the bottom of the lake, sandy land, and swamps. The bivalve 10 is picked up from the collected benthic organisms and is effective for classifying the picked out bivalve 10 by the shell length.
In the present embodiment, out of the bivalves 10, the bivalve 10 having the two shells 11 with the surface 12 formed into a curved surface is the classification target.

  That is, the tweezers 1 for classification work according to the present embodiment includes a grip portion 2 having a V shape with an open tip and a grip portion 5 provided integrally with the tip of the grip portion 2. The clam 10 can be grasped by the grasping part 5 by grasping with a hand.

The grip portion 2 and the grip portion 5 are configured such that the longitudinal direction of the grip portion 5 forms a predetermined angle with respect to the longitudinal direction of the grip portion 2. Thereby, the operation | work which grips the bivalve shell 10 collect | recovered to the tray etc. can be performed efficiently.
In addition, you may comprise so that the longitudinal direction of the grip 2 and the longitudinal direction of the holding part 5 may face the same direction.

  The grip part 2 and the grip part 5 may be formed entirely of metal or plastic, or one of the grip part 2 and the grip part 5 may be formed of metal and the other may be formed of plastic. Both the grip part 2 and the grip part 5 are made of metal, and the surface of each grip plate 6 (to be described later) of the grip part 5 is coated with plastic, or a plastic cover is attached. Good.

  The grip portion 2 is formed, for example, by bending a strip-shaped material from the center in the longitudinal direction into a V shape, and by hand holding the pair of strip-shaped grip plates 3, 3 on both sides of the folded portion 4. By gripping, both grip plates 3 and 3 are elastically deformed (moved) in the direction of closing the V shape (the direction of approaching each other) with the bent portion 4 as a base point.

  The gripping part 5 is composed of a pair of band-plate-shaped gripping plates 6 and 6 that are integrally provided at the tip of each gripping plate 3 of the gripping part 2. The grip plates 6, 6 are elastically deformed (moved) in the direction of closing the V shape (direction approaching each other) integrally with the grip plates 3, 3 with the bent portion 4 of the grip portion 2 as a base point. The bivalve 10 is held between them.

  As shown in FIG. 2, each gripping plate 6 of the gripping part 5 is formed by bending a belt-like plate so that the concave surfaces face each other, and the inner surfaces 7, 7 of both gripping plates 6, 6. The bivalve 10 is held between them. In this case, each gripping plate 6 is entirely curved so that the inner surface 7 is a concave curved surface having a curvature substantially matching the surface 12 of the shell 11 of the bivalve shell 10. As a result, when the bivalve shell 10 is gripped between the inner surfaces 7 of the two gripping plates 6, 6, the inner surface 7 of each gripping plate 6 and the surface 12 of the shell 11 of the bivalve shell 10 can be brought into surface contact. The bivalve shell 10 does not slide down between the gripping plates 6 and 6, and the load is not concentrated on the shell 11 of the bivalve shell 10 so that the shell 11 of the bivalve shell 10 is not cracked. .

  In addition, you may comprise each grip board 6 so that only the inner surface 7 may be formed in the concave curved surface of the curvature substantially matched with the surface 12 of the shell 11 of the bivalve shell 10, without curving the whole. Further, the inner surface 7 of each gripping plate 6 is provided with irregularities, and when the shell 11 of the bivalve shell 10 is gripped between the inner surfaces 7, 7 of both gripping plates 6, 6, the inner surfaces 7, 7 of both gripping plates 6, 6 And the frictional force between the shell 12 of the bivalve shell 10 and the surface 12 of the shell 11 may be increased.

Each gripping plate 6 is provided with a scale 8 along the entire length along the longitudinal direction, and a bivalve between the gripping plates 6 and 6 so that the scale 8 is along the maximum dimension portion of the shell 11 of the bivalve 10. By grasping 10, the shell length of the shell 11 of the bivalve 10 can be measured in a state where the bivalve 10 is grasped between the two gripping plates 6 and 6.
The scale 8 may be provided on only one of the grip plates 6 without being provided on the grip plates 6 and 6.

  As shown in FIG. 3, a cushioning material 9 made of an elastic material such as sponge may be provided on the inner surface 7 of each gripping plate 6. By providing such a cushioning material 9 on the inner surface 7 of each gripping plate 6, when the bivalve 10 is gripped between the gripping plates 6, 6, the load acting on the shell 11 of the bivalve shell 10 can be buffered. As a result, a load does not act locally on the shell 11 of the bivalve shell 10 and it is possible to prevent the shell 11 from cracking.

  Each gripping plate 6 may be formed of a transparent body. By forming each gripping plate 6 with a transparent body, the bivalve 10 gripped between the two gripping plates 6, 6 can be seen through from the outside of each gripping plate 6, so that it follows the maximum dimension portion of the shell 11 of the bivalve shell 10. It is possible to check whether or not the scale 8 is arranged, and the shell length of the bivalve shell 10 can be measured with high accuracy and efficiency.

  In order to classify the bivalve 10 collected using the sorting tweezers 1 configured as described above, for example, the bivalve 10 is pressed with the left hand and the grip portion 2 of the sorting tweezers 1 is gripped with the right hand. The bivalve shell 10 is positioned between the gripping plates 6 and 6 of the gripping portion 5 of the classification tweezers 1, the grip portion 2 is clamped in this state, and the gripping plates 6 and 6 are brought close to each other with the bent portion 4 as a base point. The shell 11 of the bivalve shell 10 is gripped between the inner surfaces 7, 7 of the gripping plates 6, 6.

  In this case, the shell 11 of the bivalve shell 10 is grasped by holding the shell 11 of the bivalve shell 10 between the grip plates 6, 6 so that the grip plates 6, 6 are aligned with the maximum dimension portion of the shell 11 of the bivalve shell 10. The graduation 8 of each gripping plate 6 can be applied along the maximum dimension portion, and the shell length of the shell 11 can be measured simultaneously with the bivalve 10 held.

  Therefore, since the operation | work which measures the shell length of the shell 11 of the bivalve shell 10 using a ruler conventionally becomes unnecessary, the operation | work which classify | categorizes the bivalve shell 10 by shell length can be performed efficiently.

  Further, since the inner surface 7 of each gripping plate 6 of the gripping portion 5 is formed in a concave curved surface having a curvature substantially matching the surface 12 of the shell 11 of the bivalve shell 10, the bivalve shell 10 is sandwiched between the grip plates 6, 6. , The shell 11 of the bivalve shell 10 can be brought into surface contact with the inner surface 7 of each gripping plate 6, and the bivalve shell 10 does not slide down between the gripping plates 6, 6. As a result, the load is concentrated locally on the shell 11 and the shell 11 is not cracked, and the bivalve classification work can be performed efficiently.

  Further, when the inner surface 7 of each gripping plate 6 is provided with irregularities, the frictional force between the inner surfaces 7, 7 of both gripping plates 6, 6 and the surface 12 of the shell 11 of the bivalve shell 10 can be increased. Further, it is possible to more effectively prevent the bivalve shell 10 from sliding between the two gripping plates 6 and 6.

  Furthermore, when the buffer material 9 is provided on the inner surface 7 of each knob plate 6, the load acting on the shell 11 of the bivalve shell 10 can be buffered by the buffer material 9. Can be prevented from cracking.

  Further, by forming each gripping plate 6 of the gripping portion 5 with a transparent body, a bivalve shell is formed from the outside of each gripping plate 6 with the bivalve 10 held between the gripping plates 6 and 6 of the gripping portion 5. Since it is possible to check whether or not the scale 8 is arranged in the maximum dimension portion of the ten shells 11, the bivalve 10 can be classified more efficiently.

  In the above description, the tweezers 1 for classification work according to the present invention is applied to the classification work of the bivalve 10, but the tweezers 1 for classification work of the present invention are used for classifying various objects whose surfaces are curved. In this case, the same effect can be obtained.

DESCRIPTION OF SYMBOLS 1 Tweezers for classification work 2 Grip part 3 Grip board 4 Bending part 5 Gripping part 6 Grip board 7 Inner surface 8 Scale 9 Buffer material 10 Bivalve 11 Shell 12 Surface

Claims (6)

A tweezers for classifying a bivalve having a shell with a curved surface,
A grip portion having a V shape with an open tip and elastically deformable in a direction to narrow the V shape; and a grip portion having a pair of grip plates integrally provided at the tip of the grip portion;
Forming the inner surface of each gripping plate of the gripping part into a concave curved surface;
A tweezer for classification work , wherein a scale is provided on at least one of the pair of gripping plates .   The tweezers for classification work according to claim 1, wherein irregularities are formed on the inner surface of each of the front gripping plates.   The tweezers for classification work according to claim 1, wherein a cushioning material is provided on an inner surface of each gripping plate.   The tweezers for classification work according to any one of claims 1 to 3, wherein each of the grip plates is formed of a transparent body.   The tweezers for classification work according to any one of claims 1 to 4, wherein a longitudinal direction of the gripping part forms a predetermined angle with respect to a longitudinal direction of the grip part. The tweezers for classification work according to any one of claims 1 to 5 , wherein at least the gripping portion is made of plastic.

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