JP3157371U - Shell collecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To collect a shellfish by towing a fishing boat with a nail and collect shells, and a shell collecting device that can be used for a long time without breaking or bending even if the nail for digging the seabed sand hits an obstacle I will provide a. SOLUTION: An L-shaped movable angle having a claw portion bent downward to dig up sand, which is attached to about 20 horizontal bars for holding a movable angle, and which is bent in a downward direction to dig up sand. Although it can be rotated around a round bar, it is normally pressed by a torsion spring that is rotated only within a certain range by a stopper and attached to a movable angle so that the nail is stuck in the sandy seabed. [Selection] Figure 1

Description

  The present invention relates to a device for collecting shellfish by towing a fishing boat and digging up the bottom of the sea or lake with claws.

  Towing on a fishing boat, scratching the seabed sand to dig up shells and collecting shells has long been a technique for collecting shells, and various tools have been devised. There were some tens of centimeters of iron scratching nails attached to a supporting iron bar about 3 m long in a row.

  Also, wrapping a round steel bar 8-15mm in diameter several times to make a torsion spring, fix the spring side to a supporting iron bar, do not wind about 30cm on the opposite side of the spring, and collect the above shell as a claw that scratches the seabed straight There was also a method used for the device.

  If the seabed is entirely sandy or fine gravel, there is no problem, but sometimes there are obstacles such as large stones, and the claws are often caught and bent or broken.

  In the case of a spring, it is possible to escape even if there is an obstacle, so troubles such as breaking the nail part were avoided, but because the part of the spring body is a nail, the metal is fatigued by constantly bending and stretching repeatedly. And sometimes it broke from the base of the spring. In addition, there are various directions of the force applied to the spring, so the spring may bend or extend in the lateral direction. In the case of only the nail not using the spring or the case of the spring, repairing the broken fold was very troublesome.

  In a device that collects shellfish by towing with a fishing boat to dig up the sandy bottom of the seabed or lake bottom, it can be used for a long time without breaking or bending even if the claw to dig up the seabed sand hits an obstacle. Provided is a shell collecting device that can be easily repaired even when damaged.

  About 20 movable angle holding horizontal bars are attached with L-shaped movable angles in one or two horizontal rows. This L-shaped movable angle has a claw part bent downward to dig up sand and can turn around the round bar of the mounting part, but it can be turned only within a certain range by a stopper. . The torsion spring attached to the movable angle usually presses the nail so that it pierces the sandy seabed. Then, if the nail hits an obstacle during towing, the nail can escape upward while resisting the force of the spring.

  In addition, the torsion spring is appropriately selected in terms of the hardness of the spring material, the thickness of the steel material, the diameter of the spring, the number of turns, etc. so that it can be expanded and contracted within the elastic limit so that it can withstand long-term use.

  According to the above device, when this device is towed in the sandy seabed, if the nail hits an obstacle such as a stone, the nail can avoid it, and after passing, the nail is returned to its original position by the force of the spring. Since the operation is continued, the number of accidents in which the nails are bent or broken is reduced, and it can withstand long-term use.

  It has a claw part with a length of about 20 cm, bent downward in an L-shape so as to be stuck in the sand and scratched at the tip of a movable angle of about 50 cm in length. It is pierced into the sandy seabed at the location. This movable angle is used by attaching 20 to 30 rows in one or two rows to a movable angle mounting horizontal bar.

  The movable angle is fixed by inserting a hole in the base part into the mounting flange attached to the horizontal bar and inserting a round bar for connection. A stopper for stopping at a fixed position is installed.

  A torsion spring is attached to the movable angle and pressed against the stopper by the force of the spring. At that time, the movable angle is such that it sticks into the sandy seabed as a fixed position. When the nail hits an obstacle such as a large stone while towing the seabed, the nail can escape upward against the force of the pressing spring, avoiding the stone, and after passing through the force of the spring again Return to home position.

  The horizontal bar is attached to a strong frame for towing from a fishing boat with a rope or the like, and behind the horizontal bar is digged up with a nail, and a coarse net is attached to catch the raised shellfish. is there.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the concept of the shell collecting device of the present invention. A movable angle 1 having a claw bent in an L shape is attached to an angle mounting horizontal bar 2. It is attached to the row. A frame 3 for towing with a fishing boat is attached to the horizontal bar, and is pulled in the upper right direction in this figure. A net 4 for shellfish is attached to the rear of the horizontal bar, and the top of the net straddles the movable angle so that the mouth of this net opens when towed, so that the bottom of the net does not float from the seabed The chain 5 is connected as a weight.

  To make it easier to understand the structure of this device, a side view is shown in FIG. The movable angle 1 is attached to the front and rear two rows in a horizontal row, and a tow frame 3 is attached to the horizontal bar 2 as shown in the figure. The upper side of the opening of the net 4 is mounted on the movable angle, and the chain 5 is attached to the lower side of the net as a weight.

  Only the movable angle portion is shown in FIG. 3 to describe the mechanism of the movable angle in more detail. 3a is a view from above, and FIG. 3b is a view from the side. The movable angle 1 is fitted to the mounting flange 6 set on the horizontal bar 2 together with the torsion spring 7, and is connected through the hole drilled in the torsion spring 7 and the mounting flange 6 and the hole drilled in the base of the movable angle. The round bar 8 is penetrated, and the fixing pin (a) 9 is pointed and fixed to the fixing pin hole formed at the end of the round bar.

  One end 10 of the torsion spring is pressed against the horizontal bar, and the other end 11 obtained by straightening the spring is bent at a right angle and inserted into a hole 12 formed in the middle of the movable angle to fix the pin (b) 13 It is stopped so as not to come out. Further, the movable angle is prevented from going below by the stopper 14.

  As described above, according to the shell collecting apparatus of the present invention, the movable angle claw or spring supported by the torsion spring can withstand long-term use, and the efficiency of shell collecting work is improved. In the unlikely event that one of the movable angles breaks, the fixing pins (a) and (b) can be removed and replaced easily.

Perspective view showing the concept of shellfish collecting device Side view of shellfish collecting device a Plan view of movable angle b Side view of movable angle

DESCRIPTION OF SYMBOLS 1 Movable angle 2 Horizontal bar for angle attachment 3 Pulling frame 4 Net 5 Chain 6 Mounting flange 7 Torsion spring 8 Connecting round bar 9 Fixing pin (a)
10 One end of a torsion spring 11 The other end 12 of a straight spring 12 A hole 13 formed in the middle of a movable angle 13 Fixing pin (b)
14 Stopper

Claims (2)

  It is a tool for towing with a fishing boat and scratching the seabed sand to dig up shells. At the tip of a movable angle of about 50 cm in length, it has a claw for scratching the seabed of about 20 cm in length, for mounting the movable angle. It is designed to attach 20 to 30 movable angles to a horizontal bar with a width of about 3m. Each movable angle mounting part has a mounting flange, which can be connected through a hole in the flange and the base of the movable angle. A round bar is inserted to fix the movable angle, the axial direction of the round bar is parallel to the horizontal bar, and the attached movable angle can rotate around the round bar in the direction perpendicular to the horizontal bar, A stopper is installed so that it stops at a fixed position, and the movable angle is pressed against the stopper with a torsion spring. At that time, the claw is at an angle that pierces the sand of the seabed diagonally downward. However, when the ship is towing the device and crawling the seabed, if the claws hit an obstacle, the angle can escape upward against the force of the spring, and there is a digging behind this device. A shell collecting device, characterized in that a coarse fish net for collecting the shells is attached.   2. The shell collecting device according to claim 1, wherein the movable angles are attached in two horizontal rows with their positions being changed back and forth alternately instead of one horizontal row.

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