JP7470465B1 - Wave-breaker with dust-proof plate - Google Patents

Abstract

[Problem] To provide a wave-dissipating device with dustproof plates that can easily prevent dust from entering from upstream when a river is used as a boat racing venue. [Solution] The wave-dissipating device is made up of wave-dissipating bodies with buoyancy bodies connected by connecting parts, and is made up of the wave-dissipating bodies, guardrail parts, connecting parts, and dustproof plates that prevent the inflow of underwater dust, and the dustproof plates are provided with a means for providing multiple holes. [Selected Figure] Figure 1

Description

The present invention relates to a wave-breaking device with dust-proof plates, and more specifically, to a technology that prevents the intrusion of garbage and breaks waves when a river is temporarily used to turn it into a boat racing venue.

In the past, when a river was temporarily used to create a boat racing venue, the upstream of the river was blocked off with fishing nets to prevent garbage and other debris from entering the area and also to provide a wave-breaking effect.
However, fishing nets are prone to clogging due to the adhesion of garbage and aquatic organisms, and therefore require frequent maintenance. Furthermore, when replacing fishing nets, the entire net must be brought ashore and dismantled, which is time-consuming and costly.
Therefore, when turning a river into a boat racing venue, a structure that could easily prevent dust from entering from upstream was required.

Various techniques have been proposed in this technical field. For example, a technique for preserving river nets has been proposed and is publicly known (see Patent Document 1). More specifically, a net is used in which only the front side and the upstream side of a water intake opening perpendicular to the flow of the river are blocked, and the downstream side is left open to serve as a water intake, so that the river flow can exert a tractive force on the net.
However, there is no mention of the installation or relocation of fishing sites, and the above-mentioned problems remain unresolved.

JP 2000-273844 A

In view of the above problems, the present invention aims to provide a wave dissipating device with dustproof plates that can easily prevent dust from entering from upstream when a river is used as a boat racing venue.

To solve the above problems, the present invention is made up of a wave-dissipating body, a guardrail section, a connecting section, and a dustproof plate that removes dust from underwater, and the dustproof plate is provided with a number of holes.

The present invention also employs a means in which the dustproof plate is made of FRP or aluminum material.

Furthermore, the present invention employs a means in which the dustproof plate is made up of multiple plates arranged in the vertical direction.

Furthermore, the present invention employs a means for lifting at least one of the dustproof plates upward for adjusting the water depth and for easy cleaning.

Furthermore, the present invention employs a means in which the dustproof plates are arranged in wave-dissipating body units, with adjacent dustproof plates having overlapping portions.

According to the wave-dissipating device with dustproof plates of the present invention, dust is prevented by plates of each wave-dissipating main body, so that it is possible to realize a lightweight dustproof structure and efficient maintenance.
In addition, since the dustproof plate is divided into several parts in the depth direction, a part of the dustproof plate can be hinged to have a certain angle against water resistance when moved, or the burden of the water current can be reduced by pulling it up completely, which makes it possible to reduce the workload when turning a river into a boat racing venue.

1 is an overall perspective view showing an embodiment of a wave dissipating device with dustproof plates according to the present invention. FIG. FIG. 2 is a schematic diagram showing the installation location of a wave-dissipating device with dustproof plate according to the present invention. 1 is a side view showing an embodiment of a wave dissipating device with a dustproof plate according to the present invention. FIG. FIG. 2 is an explanatory diagram showing an embodiment of a wave-dissipating device with dustproof plates according to the present invention (description of a structure for lifting up a part of the dustproof plate). FIG. 2 is an explanatory diagram showing an embodiment of a wave-dissipating device with dustproof plates according to the present invention (explanation of a shape that eliminates gaps in the dustproof plates).

The greatest feature of the wave dissipating device with dustproof plates of the present invention is that it improves the efficiency of installation work at the venue when a river is used as a boat racing venue, and improves the ease of maintenance of the installed dustproof parts.
Hereinafter, an embodiment of a wave dissipating device with dustproof plates according to the present invention will be described with reference to the drawings.
In addition, the overall configuration and the configuration of each part of the wave dissipating device with dustproof plate shown below are not limited to the embodiments described below, but can be modified as appropriate within the scope of the technical idea of the present invention, i.e., within the scope of shapes, dimensions, structures, etc. that can achieve the same functional effects.

The present invention will be described with reference to FIGS.
FIG. 1 is an overall perspective view showing an embodiment of a wave dissipating device with dustproof plates according to the present invention.
FIG. 2 is a schematic diagram showing the installation location of the wave dissipating device with dustproof plates according to the present invention, where (a) is an overall view of a boat racing venue, and (b) is a schematic diagram of a wave dissipating device with dustproof plates installed in a river.
3 is a side view showing an embodiment of a wave dissipating device with dustproof plate according to the present invention, with appropriate cross sections shown. In the figure, W.L (water line) represents the water surface.
4 is an explanatory diagram showing an embodiment of a wave dissipating device with dustproof plates according to the present invention, which has a structure for reducing the area of the dustproof plates. (a) and (b) show a folding structure using hinges, and (c) and (d) show a stacking structure using a sliding mechanism.
5 is an explanatory diagram showing an embodiment of a wave dissipating device with dustproof plates according to the present invention, and explains a shape that eliminates gaps between the dustproof plates. (a) shows a structure in which the dustproof plates are arranged alternately, (b) shows a structure in which the dustproof plates are overlapped diagonally, and (c) shows a structure in which the sides of adjacent dustproof plates are arranged so as to butt against each other and almost come into contact with each other.

The wave dissipating device with dustproof plates 1 according to the present invention is a floating wave dissipating device with dustproof plates attached.
The main purpose is to prevent garbage, dust, etc. from flowing in from upstream at boat racing venues that use rivers, and to break up waves during boat races.

Traditionally, when a boat race was held, a fishing net would be used to block the width of the river, and after the race ended, one side of the net would be released and the other side would be rotated 90 degrees around the axis to finish blocking the river.
The fishing nets are intended to prevent garbage from entering the racecourse and to have a wave-breaking effect. However, garbage and aquatic organisms adhere to the nets, causing the mesh to become clogged, and over time the resistance increases, causing the nets to lose their functionality.
In addition, cleaning the garbage and aquatic life that had become stuck to the fishing nets took a considerable amount of time and effort.
Furthermore, replacing fishing nets requires dismantling them on shore, which is a large-scale and costly task.
Furthermore, when fishing nets are discarded due to deterioration over time, they are treated as industrial waste and are subject to legal regulations on industrial waste processing and disposal methods. In addition, when discarding the nets, it is necessary to remove all attached shells, etc., making the handling of the fishing nets themselves cumbersome.

The wave dissipating device with dustproof plate 1 according to the present invention is mainly composed of a wave dissipating body 10, a guard rail section 20, a connecting section 30, a dustproof plate fixing section 40, and a dustproof plate section 50 that removes dust from underwater, and is configured by connecting multiple blocks.

The wave-dissipating body 10 is a body that reduces waves on the water surface.
The shape is a long, thin, wedge-shaped, one-piece box when viewed in cross section in the width direction, as shown in Figures 1 and 3. The tip of the wedge (left side of the paper in Figure 3) is the front part, and the base of the wedge (right side of the paper in Figure 3) is the rear part.
The wave dissipating body 10 is made of FRP material. It is arranged with the opening of the box facing the bottom, and is structured to absorb the energy of waves that enter the box. A buoyant body for floating the wave dissipating body 10 is arranged inside the wave dissipating body 10.

A wave-dissipating body fixing bracket 11 is arranged on the upper part of the wave-dissipating body 10, and a connecting part 30 and a dustproof plate fixing part 40 are fixed thereto.
The plurality of wave-dissipating bodies 10 are connected in the longitudinal direction by the connecting parts 30 disposed on the upper parts of the wave-dissipating bodies 10. By connecting the plurality of wave-dissipating bodies 10, waves can be dissipated over a wider area.
A guardrail section 20 is arranged above the front part of the wave-dissipating main body 10 via a wave-dissipating main body fixing bracket 11 and a connecting section 30.
A dustproof plate fixing part 40 and a dustproof plate part 50 are arranged at the rear of the wave-dissipating main body 10 via a wave-dissipating main body fixing metal fitting 11.
In other words, the wave-dissipating device with dustproof plates 1 is formed by connecting wave-dissipating bodies each having a buoyant body at a connecting portion.

The guardrail portion 20 is a guard portion for preventing contact or collision with the boat operator. The guardrail portion 20 is composed of a guardrail plate portion 21 and a guardrail holding portion 22. The guardrail plate portion 21 is a portion that receives impact and has a strength sufficient to prevent damage, bending, etc., due to the impact.
The guardrail holding portion 22 is for fixing the guardrail plate portion 21 to the wave-dissipating main body 10, and is fixed via the connecting portion 30 and the wave-dissipating main body fixing metal fitting 11. It has an L-shaped structure, and when the guardrail plate portion 21 receives an impact, the L-shape bends, thereby exerting a damping effect.
The guardrail plate portion 21 is fixed to the guardrail holding portion 22 by a screw portion 50.

The connecting portion 30 is for connecting a plurality of wave-dissipating bodies 10. Two of the connecting portions 30 are arranged in parallel in the width direction of the wave-dissipating bodies 10 and are arranged so as to straddle the adjacent wave-dissipating bodies 10.
The connecting portion 30 is fixed to the wave-dissipating body 10 by a screw portion 50 via a wave-dissipating body fixing bracket 11 .
The connecting portion 30 fixes the guardrail holding portion 22 with a screw portion 50 .

The dustproof plate section 50 is intended to prevent garbage and dust floating down from the upstream of the river from entering the boat racing venue.
The dustproof plate 50 serves as a substitute for a fishing net. It is made of FRP or aluminum, has a plate shape, and is a porous plate with many holes to allow water to flow.
By using FRP or aluminum, it is possible to make it into a thin flat plate, making it lighter than a fishing net.
Furthermore, by using FRP or aluminum, the surface is smoother than a fishing net, and the overall structure is flat, so that aquatic organisms are less likely to adhere to it, and even if they do adhere, they are easy to remove.
Furthermore, in the case of a fishing net, when removing underwater organisms, etc., it was necessary to pull up the entire fishing net, but in the case of the dustproof plate section 50, the dustproof plate section 50 of each wave-dissipating body 10 can be cleaned individually.
In this manner, by using the dustproof plate portion 50, the efficiency of maintenance can be improved.

The dustproof plate section 50 is made up of a plurality of plates arranged vertically, in other words, in the depth direction. In this embodiment, it is made up of three plates. From the shallowest to the deepest, they are an upper plate 51, a middle plate 52, and a lower plate 53.
Holes 55 are drilled in the middle plate 52 and the lower plate 53, and a large hole 54 is drilled in the upper plate 51.
The diameter of the hole 55 is determined according to the strength of the water current and the type of garbage in the river where the trap is to be installed. In rivers with strong water currents, the diameter of the hole is made larger, and in rivers with relatively small garbage, the diameter of the hole is made smaller.
The interval between the holes 55 is determined taking into consideration the strength of the dustproof plate portion 50, etc.
The upper plate 51 is located in a position that contacts the water surface (W.L) of the river. Therefore, the holes to be opened in the upper plate 51 must be of a size that corresponds to the size of the garbage floating on the surface of the river.
Generally, the garbage floating on the water surface includes large pieces of garbage, so a large hole 54 larger than the hole 55 is opened in the upper plate 51.
In addition, in terms of being specialized for the water surface, the large hole 54 is shaped as a large oval in the horizontal direction, so that it can accommodate large floating debris.

By bending the plates together, the two lower plates can be pulled up. The plates are connected by a hinge structure. The upper plate 51 and the middle plate 52 are connected by a first hinge portion 60, and the middle plate 52 and the lower plate 53 are connected by a second hinge portion 61.
A lifting metal fitting 62 is provided on the middle plate 52, and by pulling up a lifting chain 63 tied to the lifting metal fitting 62, the middle plate 52 and the lower plate 53 are pulled up so as to be folded.
In this way, by making it possible to lift up the dustproof plate portion 50, work efficiency can be improved when moving the wave dissipating device with dustproof plate 1 and when performing maintenance.
When the wave dissipating device with dustproof plates 1 is rotated and moved to install it upstream of a river, the dustproof plate part 50 can be pulled up to reduce water resistance, thereby reducing the labor required for movement.
When attempting to remove underwater organisms or the like adhering to the dustproof plate part 50, the dustproof plate part 50 can be pulled up, and maintenance can be performed with the dustproof plate part 50 pulled up from the water, thereby improving work efficiency.
In addition, if the water at the installation site is shallow, it is conceivable that the bottom edge of the dustproof plate section 50 may come into contact with the river bottom, but this can be flexibly dealt with by bending the middle plate 52 and the lower plate 53 appropriately.

The dustproof plate fixing portion 40 is a portion for fixing the dustproof plate portion 50 to the wave-dissipating main body 10. More specifically, it is a portion for fixing the dustproof plate portion 50 to the rear end of the wave-dissipating main body fixing metal fitting 11 provided on the wave-dissipating main body 10.
The dustproof plate fixing portion 40 is composed of an L-shaped metal fitting 41 , a pressing plate 42 and an equilateral angle 43 .
The L-shaped metal fittings 41 are metal fittings for vertically fixing the dustproof plate section 50 to the wave-dissipating main body fixing metal fitting 11. As shown in Fig. 3, the dustproof plate section 50 is fixed to the wave-dissipating main body fixing metal fitting 11 by the screw parts 70 using two metal fittings, one above and one below.
The pressing plate 42 is a reinforcing plate for preventing distortion or bending of the dustproof plate portion 50. The pressing plate 42 is attached to the front side of the upper plate 51, and is integrated with the upper plate 51 by a screw portion 70.
The equilateral angle 43 is a reinforcing metal fitting provided on the back side of the dustproof plate portion 50. Since the cross section is L-shaped, it is resistant to distortion and improves the rigidity of the upper plate 51 of the dustproof plate portion 50.
In this way, the wave-dissipating body 10 and the upper plate 51 of the dustproof plate section 50 are integrated by the dustproof plate fixing part 40. In addition, since the rigidity of the upper plate 51 itself is improved by the pressing plate 42 and the equilateral angle 43, the upper plate 51 is not distorted when the middle plate 52 and the lower plate 53 are pulled up by the lifting chain 63.

The motorboat racing track KT in this embodiment will be described with reference to Fig. 2. In Fig. 2(a), the right side is upstream and the left side is downstream.
The boat racing venue KT is temporarily set up on the river RV during the event. During the event, the upstream of the boat racing venue KT is blocked off by a wave dissipating device 1 with a dustproof plate to prevent garbage, dust, etc. from entering the venue.
The venue will be equipped with turn marks and other necessary equipment for the race. Stands for spectators will be in place at all times.

The wave dissipating device 1 with dustproof plates installed upstream of the KT motorboat racetrack is shaped to block the gap between both banks of the river and is made up of 20 wave dissipating bodies 10. A rotational movement drive unit 80 is disposed at one end of the wave dissipating device 1 with dustproof plates (FIG. 2(b)). The wave dissipating device 1 with dustproof plates is fixed to the riverbank with a rope 81.
The rotational movement drive unit 80 is constituted, for example, by a float with an outboard motor, and moves the dustproof plate-equipped wave dissipating device 1 at the start and end of the race period.
The movement is performed by rotating 90 degrees around the rope 81 on the SK side of the riverbank on the stand side.
When the race is over, the dustproof wave dissipating device 1 is rotated 90 degrees by the rotational movement drive unit 80 so that the entire device is placed in contact with the riverbank SK on the stand side.

The rotary movement drive unit 80 normally uses a gasoline outboard motor, but may be changed to an electric outboard motor and the battery may be charged by a solar system.
Such a configuration can contribute to a decarbonized society.

The dustproof plate portion 50 of the wave dissipating device with dustproof plate 1 can prevent the intrusion of garbage and dust from upstream. In addition, waves from upstream are also reduced by the dustproof plate portion 50, eliminating their effect on the race.
In addition, since the wave-dissipating body 10 itself is a wave-dissipating device, it can reduce waves during a race.
That is, according to this embodiment, the influence of garbage and dust in the river, the influence of waves in the river, and the influence of waves generated during a race can be reduced.

A method of stacking the dustproof plate parts 50 will be described with reference to Fig. 4. Fig. 4 is a side view of the wave dissipating device 1 with dustproof plates.
4A and 4B show a structure in which dust-proof plates are folded and stacked by a hinge structure, where (a) shows the state in which the hinge is extended, and (b) shows the state in which the dust-proof plates are folded by the hinge.
When the dustproof plate portion 50 is used, one surface is formed by three plates as shown in FIG.
When the middle plate 52 and the lower plate 53 are to be lifted for maintenance or the like, the lifting chain 63 is lifted, so that the middle plate 52 and the lower plate 53 are folded and lifted to the same height as the upper plate 51, as shown in FIG. 4(b).
Therefore, since the middle plate 52 and the lower plate 53 are above water, any attached matter such as shellfish can be easily removed, improving the efficiency of cleaning and other operations.
Also, although the hinge structure is used to fold backward, it may be used to fold forward.

4(c) and (d) show a structure in which dust-proof plates are overlapped by a slide mechanism. (a) shows the state in which the slide is extended, and (b) shows the state in which the slide is retracted.
At the upper ends of the middle plate 52 and the lower plate 53 there are upper protrusions 64 which protrude from the wide surface, and at the lower end of the lower plate 53 there is a lower protrusion 65 which protrudes from the wide surface.
A restricting portion 66 allowing the plates to slide is disposed at the lower ends of the upper plate 51 and the middle plate 52. A lifting metal fitting 62 is disposed at the upper end of the lower plate 53, and the lower plate 53 can be lifted up by a lifting chain 63.
4C , the dustproof plate portion 50 is in a fully extended state. The upper protrusion 64 of the middle plate 52 abuts against the restricting portion 66 of the upper plate 51, and the upper protrusion 64 of the lower plate 53 abuts against the restricting portion 66 of the middle plate 52.
By lifting the lifting chain 63, the lower plate 53 is lifted while sliding along the restricting portion 66 of the middle plate 52. Furthermore, the lower protrusion 65 of the lower plate 53 abuts against the restricting portion 66 of the middle plate 52, so that the lower plate 53 and the middle plate 52 are lifted simultaneously. Finally, as shown in FIG 4(d), the middle plate 52 and the lower plate 53 are lifted to approximately the same position as the upper plate 51.
Therefore, similarly to the hinge structure, any shellfish or other debris adhering to the middle plate 52 and the lower plate 53 can be easily removed, improving the efficiency of cleaning and other operations.

In addition, by dividing the dustproof plate section 50 into multiple plates and making it possible to lift it up, it is possible to reduce water resistance when moving the wave-dissipating body 10 to be installed in a river, thereby reducing the burden of the installation work.

A structure for preventing gaps in the left-right direction of the dustproof plate portion 50 will be described with reference to Fig. 5. Fig. 5 is a top view of the wave dissipating device 1 with dustproof plate.
Since the wave-dissipating device 1 with dustproof plates has a structure in which the wave-dissipating bodies 10 are arranged in the longitudinal direction, gaps are formed between adjacent dustproof plate sections 50.
Therefore, the dustproof plate parts 50 are overlapped in the left-right direction to eliminate the gap.
In Fig. 5(a), the dustproof plate portion 50 is slightly longer in the left-right direction, and the length from the wave-dissipating main body 10 to the dustproof plate portion 50 is changed between adjacent ones, and is staggered. In order to adjust the length, the length of the wave-dissipating main body fixing metal fitting 11 to the dustproof plate portion 50 is changed.
Since the ends of adjacent dustproof plate parts 50 overlap, gaps in the water flow direction can be eliminated.
5B shows an example in which the dustproof plate parts 50 are attached to the wave-dissipating body 10 at an angle of several degrees, rather than horizontally, with respect to the wave-dissipating body 10. In order to provide the angle, the lengths to the dustproof plate parts 50 are different for each of the three dustproof plate parts 50.
By making the dustproof plate sections 50 slightly longer in the left-right direction and providing an attachment angle, the ends of the dustproof plate sections 50 overlap, eliminating gaps between the dustproof plate sections 50.
In this way, the dustproof plates are arranged on a wave-dissipating body basis, and adjacent dustproof plates have overlapping portions, so that the entire wave-dissipating device 1 with dustproof plates can eliminate gaps in the dustproof plates in the water flow direction.

In addition, as a structure for preventing gaps in the left-right direction of the dustproof plate parts 50, instead of overlapping the dustproof plate parts 50 in the left-right direction as described above, it is also effective to arrange the sides of adjacent dustproof plate parts 50 so that they are almost in contact with each other in a butted state, as shown in FIG. 5(c). This makes it possible to prevent gaps in the left-right direction of the dustproof plate parts 50, or to suppress the gaps to an extremely small width.

Thus, according to the present invention, dustproofing is achieved using plates for each wave-dissipating section, thereby making it possible to reduce the weight of the dustproof structure and improve the efficiency of maintenance.
In addition, since the dustproof plate is divided into several parts in the depth direction, by pulling up part of the dustproof plate when moving, the burden of the water current can be reduced, and the workload when turning a river into a boat racing venue can be reduced.

In addition, the present invention is lighter than fishing nets and has less adhesion of aquatic organisms, so the device as a whole remains light. This prevents deterioration of functionality, extends the service life, and reduces maintenance costs.

The present invention is easy to install and remove, and is easy to maintain. It can be used not only as a dustproof structure for boat racing venues that temporarily use rivers, but also as a dustproof structure for specified bodies of water such as the sea, rivers, lakes, and marshes, and is believed to have great industrial applicability.

1 Wave dissipating device with dustproof plate 10 Wave dissipating body 11 Wave dissipating body fixing bracket 20 Guardrail section 21 Guardrail plate section 22 Guardrail holding section 30 Connection section 40 Dustproof plate fixing section 41 L-shaped bracket 42 Pressing plate 43 Equilateral angle 50 Dustproof plate section 51 Upper plate 52 Middle plate 53 Lower plate 54 Large hole 55 Hole 60 First hinge section 61 Second hinge section 62 Lifting bracket 63 Lifting chain 64 Upper protrusion 65 Lower protrusion 66 Regulating section 70 Screw section 80 Rotational movement drive section (float with outboard motor)
81 Rope RV River SK Stand side riverbank TK Opposite side riverbank TM Turn mark KT Boat race course

Claims (3)

A wave-dissipating device that is installed upstream of a boat racing venue on a river and is made up of a wave-dissipating body having a buoyant body connected by a connecting part,
It consists of a wave-dissipating body, a guardrail section, a connecting section, and a dust-proof plate that removes dust from underwater.
The dustproof plate is composed of a plurality of plates connected in the vertical direction by a hinge structure or a slide mechanism, and at least one of the plates can be lifted upward via a lifting chain.
The wave dissipating device with dustproof plate is characterized in that the dustproof plate is provided with a plurality of holes. The wave dissipating device with dustproof plate according to claim 1, characterized in that the dustproof plate is made of FRP material or aluminum material. The wave dissipating device with dustproof plates according to claim 1, characterized in that the dustproof plates are arranged on a wave dissipating body basis, and adjacent dustproof plates have overlapping portions.