JP6794773B2 - Protective equipment - Google Patents

Description

The present invention relates to a protective device.

For example, an underwater fishing net cleaning device that exfoliates hydroinsects and seaweeds attached to fishing nets from the fishing nets is known. (For example, Patent Document 1).

JP 2011-125262

The underwater fishing net cleaning device according to Patent Document 1 moves the cleaning tool vertically and horizontally while bringing the cleaning tool into contact with the fishing net in order to clean both sides of the fishing net in water. The cleaning tools are opposed to each other so as to sandwich the fishing net, and move by the drive of the hoisting device to clean the fishing net. In addition, the underwater fishing net cleaning device controls the hoisting device to stop by detecting that the cleaning device reaches the bottom of the net or the floating body in order to limit the movement of the cleaning device. Output a signal.

However, although such an underwater fishing net cleaning device can be used for peeling net deposits hanging in water, it cannot be used for peeling net deposits exposed on land at low tide on tidal flats and the like. In this way, the net that protects benthic organisms living on tidal flats from predators is submerged at high tide and exposed to land at low tide, so mud and sludge adhere when exposed to land. And sludge cannot be peeled off. As a result, the nets with mud and sludge give the benthic organisms a worse environment than the natural environment, so workers wash the nets that protect the benthic organisms at low tide. It took time and effort.

The main invention for solving the above-mentioned problems is a protective device installed so as to cover the bottom organisms grown in the tidal flat in order to protect the bottom organisms grown in the tidal flat from foreign enemies, and at the lower surface to be opened and at the first water level. An upper surface that is inclined so that the first end side appears from the water surface and the second end side opposite to the first end side appears from the water surface at a second water level lower than the first water level, and the lower surface and the upper surface. The first is composed of a side surface provided between the two, and a protective device main body provided with a fence or a net on the upper surface, and as the water level shifts from the first water level to the second water level while floating on the water surface. It is characterized by comprising a cleaning member that moves on the upper surface from an end side toward the second end side so as to remove deposits on the upper surface.

Other features of the present invention will become apparent with reference to the accompanying drawings and the description herein.

According to the present invention, mud and sludge can be peeled from the net by utilizing the ebb and flow of the tide. Further, since it can be washed without using a driving device such as a hoisting device, it is easy to install. Therefore, the mud and the like adhering to the net can be easily peeled off by using the ebb and flow of the tide without using electricity, so that the work efficiency of the worker can be improved.

It is a perspective view which shows an example of the protective equipment which concerns on 1st Embodiment. It is a perspective view which shows an example which arranged the net in the protective equipment which concerns on 1st Embodiment. It is a perspective view which shows an example of the operation of the protective equipment which concerns on 1st Embodiment. It is a perspective view which shows an example of the protective equipment which concerns on 2nd Embodiment. It is a perspective view which shows an example of the protective equipment which concerns on 3rd Embodiment. It is a perspective view of the protection net arranged in the tidal flat.

The description of the present specification and the accompanying drawings will clarify at least the following matters. In the following description, the X-axis is the axis in the width direction of the protective tool, the Y-axis is the axis in the depth direction of the protective tool, and the Z-axis is the axis in the height direction of the protective tool. Further, the direction along the X axis may be indicated as "X direction", the direction along the Y axis may be indicated as "Y direction", and the direction along the Z axis may be indicated as "Z direction". Further, the + side of each of the "X direction", "Y direction", and "Z direction" may be indicated by adding "+", and the-side may be indicated by adding "-".

=== Conventional protection net 1000 ===
The conventional protection net 1000 arranged on the tidal flat will be described with reference to FIG. FIG. 6 is a perspective view of the protection net 1000 arranged on the tidal flat.

As shown in FIG. 6, the protection net 1000 is a net for protecting benthic organisms from predation by other organisms. A protective frame 2000 is arranged so as to surround the benthic organism such as a shellfish to be protected, and a protective net 1000 is attached so as to cover the upper surface of the protective frame 2000. Further, although not shown, an empty PET bottle or the like may be provided so that the protective net 1000 floats at high tide.

However, since the protection net 1000 described above is arranged horizontally with no height provided to the land, mud and sludge carried when the tide changes from high tide to low tide adhere to the surface thereof. This gives the protected benthic organisms a worse environment than the natural environment, which affects their growth.

Therefore, in places such as tidal flats that are affected by the ebb and flow of the tide, the protective equipment that peels mud and sludge from the protective net 1000 (net) using the drop in water level at low tide is described in detail as follows. Explain to.

=== Protective device 100 according to the first embodiment ===
The protective device 100 according to the first embodiment will be described as follows with reference to FIGS. 1, 2, and 3. FIG. 1 is a perspective view showing an example of the protective device 100 according to the first embodiment. FIG. 2 is a perspective view showing an example in which the net 112 is arranged on the protective device 100 according to the first embodiment. FIG. 3 is a perspective view showing an example of the operation of the protective device 100 according to the first embodiment.

The protective device 100 protects benthic organisms from predation by other organisms in places affected by the ebb and flow of tides, such as near tidal flats and estuaries. The protective device 100 is configured so that mud and sludge adhering to the net 112 can be peeled off when the tide is low. This makes it possible to grow benthic organisms in a situation close to the natural environment.

The protective tool 100 includes, for example, a protective tool main body 110, a guide member 120, a cleaning member 130, and a fixing member 140.

<< Protective device body 110 >>
The protective device main body 110 is a member that is arranged so as to surround the area where the benthic organisms inhabit with a frame and protects the benthic organisms from the predation of other organisms.

The protective tool main body 110 includes, for example, a frame structure 111 and a net 112.

When the frame structure 111 is placed on land, a mask (hereinafter, referred to as “lower surface”) formed along a plane along the X-axis and the Y-axis is formed horizontally with the land. The mask facing the lower surface in the + Z direction (hereinafter, referred to as “upper surface”) is formed so as to incline toward the −Z direction from the + Y direction side toward the −Y direction side. As a result, the cleaning member 130 described later can move along the guide member 120 described later as the water level drops. The mask provided between the upper surface and the lower surface will be described below as a side surface.

As shown in FIG. 1, the frame structure 111 includes, for example, first frame members 111A to sixth frame members 111F and fixing holes 111G.

The first frame member 111A to the sixth frame member 111F are made of, for example, a stainless steel material and have a cylindrical or quadrangular prism shape. The first frame member 111A to the sixth frame member 111F are connected by welding or the like. The arrangement of the first frame member 111A to the sixth frame member 111F and their respective connection relationships will be described in detail as follows.

The first frame member 111A is a pair of members provided vertically with respect to the land. Similarly, the second frame member 111B is a pair of members provided vertically with respect to the land. The first frame member 111A and the second frame member 111B are arranged so that, for example, a temporary line connecting each of them forms a substantially rectangular shape when viewed from the Z direction. The first frame member 111A is formed longer than the second frame member 111B. Further, the end portion of the first frame member 111A on the + Z direction side and the end portion of the second frame member 111B on the + Z direction side are connected by the third frame member 111C. As a result, the inclination of the upper surface is formed as described above.

Further, the end portion of the first frame member 111A on the −Z direction side and the end portion of the second frame member 111B on the −Z direction side are connected by the fourth frame member 111D. The pair of first frame members 111A connect their ends on the + Z direction side with a fifth frame member 111E (hereinafter, may be referred to as "first end side"), and the ends on the −Z direction side thereof. The parts are connected by a sixth frame member 111F. Similarly, the pair of second frame members 111B connect their ends on the + Z direction side with a fifth frame member 111E (hereinafter, may be referred to as "second end side"), and the ends thereof on the −Z direction side thereof. The end of the frame is connected by the sixth frame member 111F. As a result, the frame structure 111 is formed.

As shown in FIG. 2, the fixing hole 111G is a hole through which the fixing member 140 described later is inserted. The fixing holes 111G are provided integrally with the respective frame members, for example, at the ends of the first frame member 111A and the second frame member 111B on the −Z direction side. That is, it is provided at the corner of the lower surface. In the state where the frame structure 111 is placed on the land, the frame structure 111 is fixed on the land by inserting the fixing member 140 into the fixing hole 111G.

As shown in FIG. 2, the net 112 is a net that covers the frame structure 111. The net 112 is made of, for example, a resin material that does not deteriorate in seawater. The net 112 is formed in a size that covers a portion of the frame structure 111 excluding the lower surface. However, one net 112 may cover the net 112, or a plurality of nets 112 may cover the net 112, and the size and shape thereof are not limited. As a result, benthic organisms existing in the region surrounded by the frame structure 111 can be protected from predation by other organisms.

<< Guide member 120 >>
As shown in FIG. 1, the guide member 120 is a member that guides the cleaning member 130, which will be described later, in a certain direction by combining with the frame structure 111. The guide member 120 is made of, for example, a stainless steel material. However, in order to prevent electrolytic corrosion caused by contact between dissimilar metals, the same material as the frame structure 111 is used. The guide member 120 has, for example, a U-shape and is joined to the third frame member 111C of the frame structure 111 to form the guide portion 121.

<< Cleaning member 130 >>
As shown in FIG. 2, the cleaning member 130 is a member that peels off mud and sludge adhering to the net 112 when shifting from high tide to low tide. The cleaning member 130 is made of, for example, a resin material and has a rod shape. The cleaning member 130 includes a main body member 131, a brush portion 132, and an articulating member 133.

The main body member 131 has, for example, a hollow cylindrical shape. The length of the main body member 131 in the longitudinal direction (X direction) is substantially equal to the length between the pair of guide members 120. The diameter of the main body member 131 is such that it comes into contact with the net 112 that covers the upper surface in a state where the connecting member 133 and the guide member 120, which will be described later, are connected to each other. The main body member 131 is not limited to being hollow or not, and may be designed to float on water.

The brush portion 132 is a brush provided radially from the peripheral surface of the main body member 131. The brush portion 132 is formed of, for example, a resin material. The brush portion 132 is not limited to being provided integrally with the main body member 131 or being provided by being adhered to the peripheral surface of the main body member 131, and the brush portion 132 is provided in a state where the cleaning member 130 is connected to the guide member 120. May be provided so as to come into contact with the net 112 covering the upper surface. Therefore, the brush portion 132 does not need to be provided over the entire peripheral surface of the main body member 131, and may be provided, for example, over the half peripheral surface of the main body member 131 in contact with the net 112.

The connecting member 133 is a member that connects the main body member 131 and the guide member 120. The articulating member 133 is made of, for example, a resin material and has a string shape. Although the articulated member 133 is not shown, for example, an adjusting unit (not shown) for adjusting the articulated member 133 to a predetermined length may be provided. Specifically, when connecting the main body member 131 to the guide member 120, the worker inserts the connecting member 133 into the guide member 120 while inserting the connecting member 133 into one hole of the adjusting portion (not shown). The connecting member 133 is inserted into the other hole by winding, and the length of the connecting member 133 is adjusted. Then, the articulating member 133 is fixed with a stopper (not shown) at a desired length. The desired length is a length that provides a frictional force between the connecting member 133 and the guide member 120 so that the connecting member 133 can slide on the guide member 120 due to the weight of the main body member 131. That is, when the connecting member 133 shifts from high tide to low tide, the connecting member 133 descends along the guide member 120 as the water level drops. When the articulating member 133 descends, the brush portion 132 in contact with the surface of the net 112 peels off mud and sludge adhering to the surface of the net 112.

<< Fixing member 140 >>
As shown in FIGS. 1 and 2, the fixing member 140 is a member that fixes the protective equipment main body 110 on land. The fixing member 140 is made of, for example, a stainless steel material, and one end thereof has a sharp shape and the other end has a circular shape. One end of the fixing member 140 is inserted into the fixing hole 111G and is driven into the land. When driven, the other end is caught in the fixing hole 111G, thereby fixing the protective device main body 110 on land.

=== Operation of protective equipment 100 ===
The operation of the protective device 100 will be described as follows with reference to FIG.

In tidal flats, the water level rises at high tide and falls at low tide. When the protective equipment 100 is placed on the tidal flat, the entire protective equipment 100 is submerged at high tide, and the entire protective equipment 100 is exposed on land at low tide.

When the water level shifts from high tide to low tide to the end of the first frame member 111A on the + Z direction side, the cleaning member 130 is exposed to the water surface. The following will be described with the water level at this time as the first water level. At this time, the cleaning member 130 is floating on the water surface because buoyancy is exerted while being in contact with the surface of the net 112. When the water level further drops, the cleaning member 130 descends along the guide portion 121 while contacting the surface of the net 112 as the water level drops. At this time, as shown in FIG. 3, the cleaning member 130 peels off mud and sludge adhering to the surface of the net 112 by its brush portion 132. When the water level drops to the + Z direction end of the second frame member 111B, the cleaning member 130 stays at that position. The following will be described with the water level at this time as the second water level.

When shifting from low tide to high tide, the cleaning member 130 operates in the reverse manner to the above. Although the frame structure 111 is submerged at high tide, it does not move in water because it is fixed on land by the fixing member 140.

=== Protective device 200 according to the second embodiment ===
The protective equipment 200 according to the second embodiment will be described as follows with reference to FIG. FIG. 4 is a perspective view showing an example of the protective device 200 according to the second embodiment.

As shown in FIG. 4, the protective tool 200 includes, for example, a protective tool main body 210, a guide member 220, a cleaning member 230, and a fixing member 240. The guide member 220, the cleaning member 230, and the fixing member 240 in the protective tool 200 according to the second embodiment are the same as the guide member 120, the cleaning member 130, and the fixing member 140 in the protective tool 100 according to the first embodiment. Therefore, the description thereof will be omitted.

The protective tool main body 210 is configured to include a frame structure 211 and a fence-shaped member 212. Since the frame structure 211 is the same as the frame structure 111 according to the first embodiment, the description thereof will be omitted. That is, the protective tool main body 210 is configured by replacing the net 112 in the protective tool main body 110 according to the first embodiment with the fence-shaped member 212.

As shown in FIG. 4, the fence-shaped member 212 is a fence that prevents other organisms from invading from the upper surface and the side surface of the frame structure 211. The fence-shaped member 212 is provided on a mask (upper surface and side surface) excluding the lower surface of the frame structure 211 so as to form a fence, for example. The fence-shaped member 212 is made of, for example, a stainless steel material, and is composed of a plurality of rod-shaped members. More specifically, for example, the fence-shaped member 212 is constant along the longitudinal direction of the fifth frame member 211E while bridging a plurality of stainless steel rods between a pair of fifth frame members 211E facing each other. It is configured by arranging them side by side at intervals. Similarly, it is also provided between the fifth frame member 211E and the sixth frame member 211E, and between the third frame member 311C and the fourth frame member 211D. The distance between the stainless steel bars may be, for example, a distance that birds cannot invade, and the distance is not limited. This allows benthic organisms in the area surrounded by the frame structure 211 to be protected from predation by other organisms.

=== Protective device 300 according to the third embodiment ===
The protective device 300 according to the third embodiment will be described as follows with reference to FIG. FIG. 5 is a perspective view showing an example of the protective device 300 according to the third embodiment.

As shown in FIG. 5, the protective tool 300 includes, for example, a protective tool main body 310, a guide member 320, a cleaning member 330, and a fixing member 340. Regarding the protective tool main body 310, the guide member 320, and the fixing member 340 in the protective tool 300 according to the third embodiment, the protective tool main body 110, the guide member 120, and the fixing member 140 in the protective tool 100 according to the first embodiment are used. Since they are the same, the description thereof will be omitted.

The cleaning member 330 includes a main body member 331, a brush portion 332, a connecting member 333, and a float member 334. Since the main body member 331, the brush portion 332, and the connecting member 333 are the same as the main body member 131, the brush portion 132, and the connecting member 133 according to the first embodiment, the description thereof will be omitted. That is, the cleaning member 330 is configured by adding the float member 334 to the cleaning member 130 according to the first embodiment.

As shown in FIG. 5, the float member 334 is a member that gives buoyancy to the main body member 331 so that the main body member 331 can move up and down on the water surface. That is, since the main body member 331 in the third embodiment does not have to be a material that floats on water, it does not have to be made of a resin material.

The float member 334 has, for example, a cylindrical shape having a diameter substantially equal to the diameter of the main body member 331, and is made of styrofoam. The float member 334 is provided at both ends of the main body member 331, for example. As a result, the main body member 331 is given buoyancy to both ends, so that the main body member 331 can move according to the up and down of the water surface. The connection between both ends of the float member 334 and the main body member 331 may be configured so that the end faces of the float member 334 and the main body member 331 can be adhered to each other so as to be seen as one body. It may be provided so as to cover a part of the connecting member 333. Note that FIG. 5 shows, as an example, a state in which the float member 334 is provided away from the end surface of the connecting member 333.

It should be noted that the above embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention also includes an equivalent thereof. For example, the following are also included.

=== Other embodiments ===
<< Protective equipment body 110, 210, 310 >>
It has been described that the nets 112, 312 and the fence 212 of the protective equipment bodies 110, 210, 310 are formed in a size that covers the portion excluding the lower surface of the frame structure 111, 211, 311, but the present invention is not limited thereto. It may be provided so as to cover at least the upper surface, and the side surface may be closed by, for example, a plate-like object having a gap through which water passes, instead of the net 112, 312 or the fence 212.

<< Cleaning members 130, 230, 330 >>
In the above, it has been described that the cleaning members 130, 230, 330 are provided with brush portions 132, 232, 332, but the present invention is not limited to this. For example, instead of the brush portions 132, 232 and 332, the main body members 131, 231 and 331 may be provided with irregularities. The unevenness is formed to be smaller than the mesh of the nets 112 and 312 and the gap between the fence-shaped members 212. This is because mud and sludge can be peeled off by fitting the uneven protrusions into the mesh and gaps.

In the above, the connecting member 133, 233, 333 has been described as having a string shape, but the present invention is not limited to this. For example, the connecting members 133, 233, 333 are rod-shaped, one end of which is connected to the main body members 131, 231, 331, and the other end of which is a guide while being inserted through the guide portions 121,221,321. For example, a disk-shaped fastener may be connected so as not to come out of the portions 121, 221 and 321. Further, the disk-shaped fastener may be formed of a floating body such as styrofoam.

In the above, the float member 334 has been described as being formed of styrofoam, but the present invention is not limited to this. Any material that floats on water may be used.

In the above, the float member 334 has been described as being arranged so as to give buoyancy to both ends of the main body member 331, but the present invention is not limited to this. It may be provided at a predetermined position (for example, a half peripheral surface on the + Z direction side) of the main body member 331. This is because buoyancy may be applied to the main body member 331.

<< Fixing members 140, 240, 340 >>
In the above, the protective equipment 100, 200, 300 has been described as being configured to include the fixing members 140, 240, 340, but the present invention is not limited thereto. For example, the fixing members 140, 240, 340 may not be included, and the protective equipment 100, 200, 300 may be fixed on land with a weight stone or the like prepared separately. In this case, the frame structures 111, 211, and 311 do not have to include the fixing holes 111G, 211G, and 311G.

=== Summary ===
As described above, the protective devices 100, 200, 300 according to the present embodiment are the protective devices 100, 200, 300 installed so as to cover the bottom organisms to protect the bottom organisms grown on the tidal flat from foreign enemies. That is, the lower surface to be opened and the first end edge appear from the water surface at the first water level, and the second end edge opposite to the first end edge appears from the water surface at the second water level lower than the first water level. Protective equipment bodies 110, 210, 310, which are composed of an upper surface that is inclined to the top and side surfaces that are provided between the lower surface and the upper surface, and that are provided with nets 112, 312 or fence 212 on the upper surface, while floating on the water surface. Cleaning members 130, 230, 330, which move on the upper surface from the first end side to the second end side so as to remove the deposits on the upper surface as the water level shifts from the first water level to the second water level, are provided. It is characterized by that. According to the present embodiment, the cleaning members 130, 230, 330 descend along the upper surface of the frame structure 111, 211, 311 in response to the change in the water level in the tidal flat, so that the nets 112, 312 Alternatively, since the mud and sludge adhering to the surface of the fence 212 can be peeled off, the work of removing the mud by the worker can be reduced.

Further, in the protective tools 100, 200, 300 according to the present embodiment, the guide members 120, 220, 320 provided on both sides of the upper surface so as to guide the cleaning members 130, 230, 330 along the upper surface. It is characterized by having and being configured. According to the present embodiment, the protective equipment main bodies 110, 210, and 310 can surely descend along the upper surface while contacting the upper surface.

Further, in the protective devices 100 and 200 according to the present embodiment, the cleaning members 130 and 230 have a tubular shape and are formed of a resin material that floats on water, and both ends of the main body members 131 and 231 and the main body members 131 and 231. Is characterized by having connecting members 133 and 233 which are connected to the guide members 120 and 220. According to this embodiment, since corrosion due to salt water can be avoided by using a resin product, the production cost can be reduced.

Further, in the protective tool 300 according to the present embodiment, the cleaning member imparts buoyancy to the main body member 331 having a tubular shape, the connecting member 333 connecting both ends of the main body member 331 to the guide member 320, and the main body member 331. According to the present embodiment, which comprises a float member 334 attached to the main body member 331, the float member 334 is attached to the float member 331, regardless of the type of material of the main body member 331. Since it can be manufactured without any need, the manufacturing cost can be reduced.

Further, in the protective tools 100, 200, 300 according to the present embodiment, the cleaning members 130, 230, 330 have brush portions 132, 232 for peeling off the deposits adhering to the upper surface when moving on the upper surface. , 332. According to the present embodiment, mud and sludge adhering to the nets 112 and 312 or the fence-shaped member 212 can be efficiently peeled off, so that work efficiency can be improved.

Further, in the protective equipment 100, 200, 300 according to the present embodiment, the net 112, 312 or the fence 212 is provided on the side surface of the protective equipment main body 110, 210, 310. According to this embodiment, it is possible to eliminate the invasion of birds from the side surface at low tide.

Further, the protective equipment 100, 200, 300 according to the present embodiment is further provided with fixing members 140, 240, 340 for fixing the protective equipment main bodies 110, 210, 310 to the tidal flat. According to the present embodiment, the protective tool main bodies 110, 210, 310 can be firmly fixed by the fixing members 140, 240, 340, so that safety can be improved.

100,200,300 Protective equipment 110,210,310 Protective equipment main body 111,211,311 Frame structure 112,312 Net 212 Fence 120,220,320 Guide member 130,230,330 Cleaning member 131,231,331 Main body member 132,232,332 Brush part 133,233,333 Connecting member 140,240,340 Fixing member 334 Float member

Claims (7)

A protective device installed to cover the benthic organisms grown on the tidal flats in order to protect them from foreign enemies.
The lower surface to be opened and the first end edge appear from the water surface at the first water level, and at the second water level lower than the first water level, the second end edge opposite to the first end edge appears from the water surface. A protective tool main body that is composed of an upper surface and a side surface provided between the lower surface and a side surface provided between the lower surface and a net or a fence provided on the upper surface.
While floating on the water surface, as the water level shifts from the first water level to the second water level, the water moves from the first end side to the second end side on the upper surface so as to remove deposits on the upper surface. Cleaning members and
Protective equipment characterized by being equipped with. The protective device according to claim 1.
Guide members provided on both sides of the upper surface so as to guide the cleaning member along the upper surface.
A protective device characterized in that it is composed of. A protector according to請Motomeko 2,
The cleaning member
A main body member that has a tubular shape and is made of a resin material that floats on water,
An articulating member that connects both ends of the main body member to the guide member,
A protective device characterized in that it is composed of. A protector according to請Motomeko 2,
The cleaning member
The main body member that has a tubular shape and
An articulating member that connects both ends of the main body member to the guide member,
A float member mounted on the main body member to give buoyancy to the main body member,
A protective device characterized in that it is composed of. The protective device according to any one of claims 1 to 4.
A protective device characterized in that the cleaning member has a brush portion for peeling off deposits adhering to the upper surface when moving on the upper surface. The protective device according to any one of claims 1 to 4.
The protective device, characterized in that a net or a fence is provided on the side surface of the protective device main body. The protective device according to any one of claims 1 to 6.
A fixing member for fixing the protective equipment body to the tidal flat,
Protective equipment that is further equipped with.

Images