JP6997512B2 - Dredging intake structure - Google Patents

Dredging intake structure Download PDF

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JP6997512B2
JP6997512B2 JP2016209409A JP2016209409A JP6997512B2 JP 6997512 B2 JP6997512 B2 JP 6997512B2 JP 2016209409 A JP2016209409 A JP 2016209409A JP 2016209409 A JP2016209409 A JP 2016209409A JP 6997512 B2 JP6997512 B2 JP 6997512B2
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dredging
intake port
back surface
intake
fence
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JP2018071104A (en
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勝利 渡邉
岩夫 松原
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岩夫 松原
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本発明は、湖沼、池などの水底に堆積している泥や砂を浚い取る浚渫機において泥や砂を吸込むための取込口に関する。 The present invention relates to an intake port for sucking mud and sand in a dredging machine for dredging mud and sand accumulated on the bottom of lakes and ponds.

2011年3月の福島第一原子力発電所の事故により拡散した放射性セシウムによる土壌汚染の対策が急がれている。とくに放射性セシウムを吸着した土壌が降雨などにより水域に流入し湖沼や池などの閉鎖した水域の水底に集積し、放射性セシウムの高濃度化が生じている。そして、このような閉鎖性水域が農業用のため池である場合には耕作地を再汚染し、漁場である場合には水産物の汚染を招くこととなり早急な対策が求められている。 There is an urgent need to take measures against soil contamination caused by radioactive cesium diffused by the accident at the Fukushima Daiichi Nuclear Power Station in March 2011. In particular, soil that has adsorbed radioactive cesium flows into the water area due to rainfall and accumulates on the bottom of closed water areas such as lakes and ponds, resulting in high concentrations of radioactive cesium. If such a closed water area is an agricultural pond, it will recontaminate the cultivated land, and if it is a fishing ground, it will contaminate marine products, and urgent measures are required.

水底での泥土汚染は表層において汚染度が高く、深いところでの汚染度は低くなることがわかっている。したがって、水底表層の深さ数cmから数十cm程度の泥や砂を浚渫機により浚い取ることで、相当量の汚染泥土を除去することができる。 It is known that mud pollution at the bottom of the water is highly polluted on the surface and low in the deep. Therefore, a considerable amount of contaminated mud can be removed by dredging mud and sand having a depth of several cm to several tens of cm on the surface layer of the bottom of the water with a dredging machine.

水底の汚染泥土を除去・回収する場合において最も注意を払うべきは、泥や砂を巻き上げて水中に拡散させてしまわないようにすることである。すなわち、水底において沈静化している放射性セシウムを水中に拡散させてしまうことのないように行わなければならない。 The most important thing to pay attention to when removing and recovering contaminated mud from the bottom of the water is to prevent the mud and sand from being rolled up and diffused into the water. That is, it must be done so as not to diffuse the radioactive cesium that has calmed down at the bottom of the water into the water.

泥や砂を巻き上げないようにするための技術として、特許文献1には、進行方向に相対的に後記下面より少なくとも一部は出っ張っている上面と、進行方向に相対的に前記上面より少なくとも一部は後退している下面と、上面と下面とに挟まれた進行方向に開口した取込開口と、取込開口に設けられる吸い込むと管が詰まる物を取込開口に入れないための柵と、吸込管と、からなる浚渫用取込口構造体が開示されている。 As a technique for preventing mud and sand from being rolled up, Patent Document 1 describes an upper surface that is relatively slightly protruding from the lower surface described later in the traveling direction and at least one surface that is relatively protruding from the upper surface in the traveling direction. The part is a retracted lower surface, an intake opening opened in the traveling direction sandwiched between the upper surface and the lower surface, and a fence provided in the intake opening to prevent things that clog the pipe when sucked into the intake opening. , A suction pipe and a dredging intake structure are disclosed.

実登3196857号公報Jitsuto 3196857 Gazette

図1は、特許文献1に記載の従来の浚渫用取込口構造体を用いた浚渫機により水底の泥や砂を浚い取る態様を示す概念図である。図示するように、この浚渫用取込口構造体(0101)は、移動用シャフト(0102)と連結され、移動用シャフトを支持する支持台車(0103)が台船(0104)に敷設されるレール(0105)上を移動することにより水底(0106)を浚いながら移動する。 FIG. 1 is a conceptual diagram showing a mode in which mud and sand on the bottom of the water are removed by a dredging machine using the conventional dredging intake structure described in Patent Document 1. As shown in the figure, this dredging intake structure (0101) is connected to a moving shaft (0102), and a support carriage (0103) for supporting the moving shaft is laid on the trolley (0104). (0105) By moving on the water bottom (0106), it moves while dredging.

図中において矢印で示される浚渫用取込口構造体の進行方向には泥や砂を取込むための取込開口(0107)があり、取込まれた泥や砂は取込口(0108)を経てポンプなどにより吸引され所定の容器(0109)に収められる。このように採取された泥や砂は、所定の除染処理や廃棄処理などに供される。 In the figure, there is an intake opening (0107) for taking in mud and sand in the traveling direction of the dredging intake structure indicated by an arrow, and the taken in mud and sand is taken in (0108). It is sucked by a pump or the like and stored in a predetermined container (0109). The mud and sand collected in this way are used for predetermined decontamination treatment and disposal treatment.

図2は、従来の浚渫用取込口構造体を示す概念図である。図2(a)に示すように、この浚渫用取込口構造体(0201)は水底と接する側に下面(0202)を有し、進行方向には柵(0203)を備えることで枝などが浚渫用取込口構造体の中に進入することを防止しながら泥や砂を取込むように構成されている。 FIG. 2 is a conceptual diagram showing a conventional dredging intake structure. As shown in FIG. 2A, this dredging intake structure (0201) has a lower surface (0202) on the side in contact with the bottom of the water, and a fence (0203) is provided in the traveling direction to form branches and the like. It is configured to take in mud and sand while preventing it from entering the dredging intake structure.

図2(b)は、この浚渫用取込口構造体を用いて浚渫を行っている態様を示している。図示するように、黒塗り矢印の方向へ泥や砂を吸込みつつ白塗り矢印で示される進行方向へ進みながら浚渫する。このように水底に沿い進みながらの浚渫において、従来の浚渫用取込口構造体は水底にあまり沈み込まず、そのため浚渫用取込口構造体の内側に流入する泥や砂の量が少なく効率的な浚渫を行うことができないという問題があった。 FIG. 2B shows a mode in which dredging is performed using this dredging intake structure. As shown in the figure, dredging while advancing in the direction of travel indicated by the white-painted arrow while sucking mud and sand in the direction of the black-painted arrow. In dredging while advancing along the bottom of the water in this way, the conventional dredging intake structure does not sink much into the water bottom, so the amount of mud and sand flowing into the inside of the dredging intake structure is small and efficient. There was a problem that it was not possible to perform a typical dredging.

本発明においては、特許文献1に開示されている浚渫用取込口構造体における問題を解決し、より効率的な浚渫を行い得る浚渫用取込口構造体を提供することを課題とする。 An object of the present invention is to solve the problem in the dredging intake structure disclosed in Patent Document 1 and to provide a dredging intake structure capable of performing more efficient dredging.

そこで、上記課題を解決するために本発明において、以下の浚渫用取込口構造体などを提供する。すなわち、上面と、上面の進行方向後端に配置される背面と、側面と、背面下端近傍に設けられる浚渫対象となる泥や砂などを吸い上げるための取込口と、進行方向に 向けた開口であって、上面略前端から背面下端まで形成される開口と、上面略前端から背面下端まで形成されて取込口がつまるサイズの物を取込口に入れないための間隙が前記取込口の内径以下の柵と、を有する浚渫用取込口構造体を提供する。Therefore, in order to solve the above problems, the following dredging intake structure and the like are provided in the present invention. That is, the upper surface, the back surface arranged at the rear end in the traveling direction of the upper surface, the side surface, the intake port provided near the lower end of the back surface for sucking up mud and sand to be dredged, and the opening in the traveling direction . Therefore, there is a gap between the opening formed from the substantially front end of the upper surface to the lower end of the back surface and the gap formed from the substantially front end of the upper surface to the lower end of the back surface to prevent the intake port from being clogged with the intake port. Provided is a dredging intake structure having a fence with an inner diameter of less than or equal to.

また、上記の構成を備え、背面は進行方向に開く略V字状である浚渫用取込口構造体を提供する。また、上記の構成を備え、前記柵は、上面略前端から緩やかなカーブを描いて背面下端に向けて配置される浚渫用取込口構造体を提供する。 Further, the above-mentioned structure is provided, and a dredging intake structure having a substantially V-shape on the back surface which opens in the traveling direction is provided. Further, having the above-mentioned configuration, the fence provides a dredging intake structure which is arranged toward the lower end of the back surface while drawing a gentle curve from the substantially front end of the upper surface.

また、上記の構成を備え、取込口は背面の前記略V字状の角部分に配置される浚渫用取込口構造体を提供する。また、上記の構成を備え、取込口は背面の高さ中心よりも取込口開口中心が下側に位置する浚渫用取込口構造体を提供する。 Further, the intake port has the above-mentioned configuration, and provides a dredging intake port structure arranged at the substantially V-shaped corner portion on the back surface. Further, the above-mentioned structure is provided, and the intake port provides a dredging intake port structure in which the center of the intake port opening is located below the center of the height of the back surface.

また、上記の構成を備え、柵を構成している棒材は断面矩形の角棒材であり、仮想的な水底面に対してその一面が対向するように配置されている浚渫用取込口構造体を提供する。また、上記の構成を備え、下側に上面と非平行で仮想的な水底面に先端を向けて配置される爪を有する浚渫用取込口構造体を提供する。



Further, the bar material having the above structure and constituting the fence is a square bar material having a rectangular cross section, and the dredging intake port is arranged so that one side thereof faces the virtual bottom surface of the water. Provides a structure. Further provided is an intake structure for dredging having the above-mentioned configuration and having a claw on the lower side which is not parallel to the upper surface and is arranged with the tip facing a virtual bottom surface of the water .



本発明により、浚渫用取込口構造体がより深く水底に沈み込むことにより、多くの泥や砂を吸い上げることのできる浚渫用取込口構造体を提供することが可能となる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a dredging intake structure capable of sucking up a large amount of mud and sand by submerging the dredging intake structure deeper into the water bottom.

従来の浚渫用取込口構造体を用いた浚渫機により水底の泥や砂を浚い取る態様を示す概念図Conceptual diagram showing a mode of dredging mud and sand on the seabed by a dredging machine using a conventional dredging intake structure. 従来の浚渫用取込口構造体を示す概念図Conceptual diagram showing a conventional dredging intake structure 実施形態1の浚渫用取込口構造体の一例を示す概念図Conceptual diagram showing an example of the dredging intake port structure of the first embodiment 実施形態1の浚渫用取込口構造体と従来の浚渫用取込口構造体との相違を説明するための概念図Conceptual diagram for explaining the difference between the dredging intake port structure of the first embodiment and the conventional dredging intake port structure. 実施形態1の浚渫用取込口構造体の一例を示す正面図Front view showing an example of the dredging intake port structure of the first embodiment. 実施形態1の浚渫用取込口構造体の柵の一部を拡大して示す概念図Conceptual diagram showing a part of the fence of the dredging intake structure of the first embodiment in an enlarged manner. 実施形態2の浚渫用取込口構造体の一例を示す斜視図A perspective view showing an example of the dredging intake port structure of the second embodiment. 実施形態2の浚渫用取込口構造体の一例を示す上面図及び底面図Top view and bottom view showing an example of the dredging intake port structure of the second embodiment. 実施形態3の浚渫用取込口構造体の一例を示す斜視図A perspective view showing an example of the dredging intake port structure of the third embodiment. 実施形態3の浚渫用取込口構造体の一例を示す側面図A side view showing an example of the dredging intake port structure of the third embodiment.

以下、本発明の実施の形態について、添付図面を用いて説明する。なお、本発明は、これら実施形態に何ら限定されるべきものではなく、その要旨を逸脱しない範囲において、種々なる態様で実施し得る。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The present invention should not be limited to these embodiments, and may be implemented in various embodiments without departing from the gist thereof.

実施形態1は、主に請求項1、5、6、8などに関する。実施形態2は、主に請求項2から4などに関する。実施形態3は、主に請求項7などに関する。
<実施形態1>
<実施形態1 概要>
The first embodiment mainly relates to claims 1, 5, 6, 8, and the like. The second embodiment mainly relates to claims 2 to 4, and the like. The third embodiment mainly relates to claim 7.
<Embodiment 1>
<Outline of Embodiment 1>

本実施形態は、浚渫用取込口構造体に備わる柵を背面下端まで延伸し下面を設けないことにより、より多くの泥や砂を吸い上げるようにしたことを特徴とする。
<実施形態1 構成>
The present embodiment is characterized in that the fence provided in the dredging intake structure is extended to the lower end of the back surface and the lower surface is not provided so that more mud and sand can be sucked up.
<Embodiment 1 Configuration>

図3は、本実施形態の浚渫用取込口構造体の一例を示す概念図である。図3(a)は、本実施形態の浚渫用取込口構造体の一例を上方からの斜視図で示した図である。図中の矢印は浚渫用取込口構造体の進行方向である。また、図3(b)は、図3(a)で示した浚渫用取込口構造体を下方からの斜視図で示した図である。この浚渫用取込口構造体は、図1に示す態様にて浚渫に用いられる。 FIG. 3 is a conceptual diagram showing an example of the dredging intake port structure of the present embodiment. FIG. 3A is a perspective view showing an example of the dredging intake port structure of the present embodiment from above. The arrow in the figure is the traveling direction of the dredging intake structure. Further, FIG. 3B is a view showing the dredging intake port structure shown in FIG. 3A as a perspective view from below. This dredging intake structure is used for dredging in the manner shown in FIG.

図示するように、浚渫用取込口構造体(0301)は、上面(0302)と、上面の進行方向後端に配置される背面(0303)と、側面(0304)を有する。そして、上面と両側面と後述の柵とで囲まれた進行方向に開く開口が取込開口(0309)となる。上面に設けられる移動用シャフト連結部材(0308)は、浚渫用取込口構造体を移動させるための移動用シャフトを連結するための部材である。そして、取込開口から進入する泥や砂などを吸い上げるための取込口(0306)は、背面下端近傍に設けられる。また、浚渫用取込口構造体の後方に備わる吸込管(0307)は、取込口から取り込まれた泥や砂をポンプなどにより吸い上げるためのホースなどを連結するための部材である。 As shown in the figure, the dredging intake structure (0301) has an upper surface (0302), a back surface (0303) arranged at the rear end in the traveling direction of the upper surface, and a side surface (0304). Then, the opening that opens in the traveling direction surrounded by the upper surface, both side surfaces, and the fence described later is the intake opening (0309). The moving shaft connecting member (0308) provided on the upper surface is a member for connecting the moving shaft for moving the dredging intake port structure. An intake port (0306) for sucking up mud, sand, etc. entering from the intake opening is provided near the lower end of the back surface. Further, the suction pipe (0307) provided behind the dredging intake port structure is a member for connecting a hose or the like for sucking up mud or sand taken in from the intake port by a pump or the like.

そして、上面略前端から背面下端に向けて取込口がつまるサイズの物を取込口に入れないための柵(0305)が備わる。なお、背面下端は略背面下端ならば本件発明の効果を失わない。つまり、背面に連続して微小な底面が設けられるような場合には、本件発明でいうところの略背面下端に該当するものとする。目安としては、上面の進行方向長に対して20%以下程度の底面が設けられそこに柵が終端するような場合には本件発明の構成を備えたものと解釈できる。これは上面略前端に関しても同様である。柵は取込口の詰まりの原因となる枝やごみなどの進入を妨げる。図示するように、柵は上面略前端から傾斜をもって下方に延び、屈曲した後に上面と略平行に背面下端に向けて延びている。このように浚渫用取込口構造体の下側を面ではなく柵で構成することにより、水底の泥や砂に沈み込みやすくなる。したがって、上面、背面及び両側面に囲まれる空間に多くの泥や砂が収容される。そして、このように収容される泥や砂が取込口から吸い上げられる。 Then, a fence (0305) is provided to prevent an object having a size in which the intake port is clogged from the substantially front end of the upper surface to the lower end of the back surface. If the lower end of the back surface is substantially the lower end of the back surface, the effect of the present invention is not lost. That is, when a minute bottom surface is continuously provided on the back surface, it corresponds to the substantially lower end of the back surface as referred to in the present invention. As a guide, when a bottom surface of about 20% or less with respect to the traveling direction length of the upper surface is provided and the fence ends there, it can be interpreted that the configuration of the present invention is provided. This also applies to the substantially front end of the upper surface. The fence prevents the entry of branches and debris that cause clogging of the intake. As shown in the figure, the fence extends downward with an inclination from the substantially front end of the upper surface, bends, and then extends toward the lower end of the back surface substantially parallel to the upper surface. By forming the lower side of the dredging intake structure with a fence instead of a surface in this way, it becomes easy to sink into mud or sand on the bottom of the water. Therefore, a lot of mud and sand are stored in the space surrounded by the upper surface, the back surface and both side surfaces. Then, the mud and sand contained in this way are sucked up from the intake port.

図4は、本実施形態の浚渫用取込口構造体と従来の浚渫用取込口構造体との相違を説明するための概念図である。図4(a)は、従来の浚渫用取込口構造体を用いて浚渫を行う態様を示す概念図であり、図4(b)は、本実施形態の浚渫用取込口構造体を用いて浚渫を行う態様を示す概念図である。 FIG. 4 is a conceptual diagram for explaining the difference between the dredging intake port structure of the present embodiment and the conventional dredging intake port structure. FIG. 4 (a) is a conceptual diagram showing an embodiment of dredging using a conventional dredging intake structure, and FIG. 4 (b) uses the dredging intake structure of the present embodiment. It is a conceptual diagram which shows the mode of performing dredging.

図4(a)に示すように、従来の浚渫用取込口構造体(0401)による浚渫は、浚渫用取込口構造体の進行による水底への沈み込みが浅い。沈み込みが浅いということは、浚って吸い上げることのできる泥や砂の表層からの深さが浅いことを意味する。ここで、図中の一点鎖線(0405)は、沈み込む割合を規定する傾きであり、浚渫用取込口構造体の進行の速さに依存する。そして、上面(0402)の進行方向側の先端位置(始点)から沈み込み始め、上面先端から延びる柵(0403)が達する下面(0404)の進行方向側の先端位置(終点)にて沈み込みは終了する。このように浚渫用取込口構造体が沈み込む深さは、浚渫用取込口構造体の進行の速さに依存する沈み込む割合と上述した始点から終点までの距離によって定まる。 As shown in FIG. 4A, the dredging by the conventional dredging intake structure (0401) has a shallow subduction to the water bottom due to the progress of the dredging intake structure. The shallow subduction means that the depth from the surface layer of mud and sand that can be sucked up is shallow. Here, the alternate long and short dash line (0405) in the figure is an inclination that defines the subduction rate, and depends on the speed of progress of the dredging intake structure. Then, the sinking starts from the tip position (start point) on the traveling direction side of the upper surface (0402), and the sinking starts at the tip position (ending point) on the traveling direction side of the lower surface (0404) reached by the fence (0403) extending from the tip of the upper surface. finish. The depth of sinking of the dredging intake structure is determined by the sinking ratio depending on the speed of progress of the dredging intake structure and the above-mentioned distance from the start point to the end point.

図4(b)に示すように、本実施形態の浚渫用取込口構造体(0406)においては、上面(0407)の進行方向側の先端から延びる柵(0408)は背面(0409)にまで達する。したがって、上述した始点から終点までの距離が従来の浚渫用取込口構造体における同距離よりも長い。進行の速さが同等であれば沈み込む割合(0410)も同等であり、結果的に浚渫用取込口構造体が沈み込む深さはより深くなる。すなわち浚渫用取込口構造体により吸い上げることのできる泥や砂の量を相対的に多くすることができる。具体的にはこの始点と終点までの長さは、すくい上げたい泥の深さに依存する。この深さが20から30センチメートルの場合には始点終点間距離は20センチメートル以上できれば35センチメートル以上あることが好ましい。すくい上げたい泥の深さがさらに深くなる場合、例えば30センチメートルから40センチメートルくらいの場合では始点終点間距離は35センチメートル以上50センチメートル程度あることが好ましい。また取込開口の高さは、前者の場合10センチメートル以上あることが好ましい。後者の場合には20センチメートル以上あることが好ましい。上限は規定しないが、実施、特に稼働の容易性から考えて40センチメートル以下が好ましい。 As shown in FIG. 4B, in the dredging intake structure (0406) of the present embodiment, the fence (0408) extending from the tip of the upper surface (0407) on the traveling direction side extends to the back surface (0409). Reach. Therefore, the distance from the start point to the end point described above is longer than the same distance in the conventional dredging intake structure. If the speed of progress is the same, the rate of subduction (0410) is also the same, and as a result, the depth of subduction of the dredging intake structure becomes deeper. That is, the amount of mud and sand that can be sucked up by the dredging intake structure can be relatively increased. Specifically, the length to the start point and the end point depends on the depth of the mud to be scooped up. When this depth is 20 to 30 cm, the distance between the start point and the end point is preferably 20 cm or more, preferably 35 cm or more. When the depth of the mud to be scooped becomes deeper, for example, when it is about 30 cm to 40 cm, the distance between the start point and the end point is preferably about 35 cm or more and 50 cm. Further, the height of the intake opening is preferably 10 cm or more in the former case. In the latter case, it is preferably 20 cm or more. Although the upper limit is not specified, it is preferably 40 cm or less in consideration of implementation, especially ease of operation.

以上の通り、本実施形態の浚渫用取込口構造体を用いることで従来よりも多くの泥や砂を吸い上げることが可能になり、より効率的な浚渫を行うことができる。 As described above, by using the dredging intake structure of the present embodiment, it is possible to suck up more mud and sand than before, and more efficient dredging can be performed.

図5は、本実施形態の浚渫用取込口構造体の正面図である。図示するように、柵(0501)の間隙wを取込口(0502)の内径r以下にすることにより、取込口を通過しない大きさの枝やごみなどが浚渫用取込口構造体の内側に進入することを防止することができ、それらの枝やごみにより取込口が詰まることを防止することができる。 FIG. 5 is a front view of the dredging intake port structure of the present embodiment. As shown in the figure, by setting the gap w of the fence (0501) to the inner diameter r or less of the intake port (0502), branches and dust having a size that does not pass through the intake port can be removed from the dredging intake port structure. It is possible to prevent the entry into the inside, and it is possible to prevent the intake port from being clogged by those branches and dust.

柵の間隙は取込口の内径に対して過度に短くすることは好ましくない。枝やごみなどの進入を防止する効果が高まる一方で、泥や砂を浚渫用取込口構造体へ導入する効率が低下し、浚渫の効率が低下してしまうからである。枝などの進入を防止しつつ良好な浚渫効率を得るためには、一の柵の幅方向の中心と隣の柵の幅方向の中心との間隔が4cmから6cmであって、柵の幅が3cmから5cmであることが好ましい。 It is not preferable that the gap between the fences is excessively short with respect to the inner diameter of the intake port. This is because while the effect of preventing the ingress of branches and dust is enhanced, the efficiency of introducing mud and sand into the dredging intake structure is reduced, and the efficiency of dredging is reduced. In order to obtain good dredging efficiency while preventing the entry of branches, the distance between the center in the width direction of one fence and the center in the width direction of the adjacent fence is 4 cm to 6 cm, and the width of the fence is wide. It is preferably 3 cm to 5 cm.

また、取込口の開口の中心が背面の高さhの中心より下側に位置するように設けることが好ましい。このように取込口を設けることで、浚渫用取込口構造体の下側により充満しやすい泥や砂を効率よく吸い上げることが可能になる。 Further, it is preferable to provide the intake port so that the center of the opening is located below the center of the height h of the back surface. By providing the intake port in this way, it becomes possible to efficiently suck up mud and sand that are easily filled from the lower side of the dredging intake port structure.

図6は、柵の一部を拡大して示す概念図である。この柵は、図示するように矩形断面(0601)の角棒材(0602)により構成されている。そして、その一面(0603)が仮想的な水底面に対向するように配置されている。仮想的な水底面とは、水底が平坦で水平な面であると仮想した場合の水底面である。このように構成することで、仮想的な水底面と面にて接触することができ、スムーズに進行できる。また、現実の水底面に起伏があったとしても面での接触により進行をスムーズにし得る。 FIG. 6 is a conceptual diagram showing a part of the fence in an enlarged manner. As shown in the figure, this fence is made of a square bar (0602) having a rectangular cross section (0601). Then, one surface (0603) is arranged so as to face the virtual bottom surface of the water. The virtual bottom of the water is the bottom of the water when it is assumed that the bottom is a flat and horizontal surface. With this configuration, it is possible to make contact with the virtual bottom surface of the water on the surface, and it is possible to proceed smoothly. In addition, even if there is an undulation on the actual bottom surface of the water, the progress can be smoothed by contact with the surface.

浚渫用取込口構造体を形成する材料としては、水圧のかかる環境下に置かれ岩石や硬い地盤に衝突する場合もあるため機械強度に優れる鉄や鋼などを用いることが好ましい。また、鉄や鋼などと同程度の機械強度を有する樹脂を用いてもよい。併せて、防錆性を付与することも好ましい。
<実施形態1 効果>
As the material for forming the dredging intake structure, it is preferable to use iron or steel having excellent mechanical strength because it may collide with rocks or hard ground when placed in an environment subject to water pressure. Further, a resin having the same mechanical strength as iron or steel may be used. At the same time, it is also preferable to impart rust prevention.
<Effect of Embodiment 1>

本実施形態の浚渫用取込口構造体により、泥や砂を吸い上げる量を多くするとともに取込口が枝やごみなどにより詰まることを防止することで、より効率的な浚渫を行うことができる。
<実施形態2>
<実施形態2 概要>
The dredging intake structure of the present embodiment increases the amount of mud and sand sucked up and prevents the intake from being clogged with branches or dust, so that more efficient dredging can be performed. ..
<Embodiment 2>
<Outline of Embodiment 2>

本実施形態の浚渫用取込口構造体は、実施形態1を基本とし、柵が上面略前端から緩やかなカーブを描いて背面下端に向けて配置されることを特徴とする。
<実施形態2 構成>
The dredging intake structure of the present embodiment is based on the first embodiment, and is characterized in that the fence is arranged toward the lower end of the back surface in a gentle curve from the substantially front end of the upper surface.
<Embodiment 2 Configuration>

図7は、本実施形態の浚渫用取込口構造体の一例を示す斜視図である。図示するように浚渫用取込口構造体は、柵(0701)が上面(0702)の略前端から緩やかなカーブを描いて背面(0703)下端に向けて配置される。緩やかなカーブは必ずしも曲線のみで構成されなくともよく、直線をつないで構成する場合も本件発明でいう緩やかなカーブに該当するものとする。例えば、図3のように構成される場合も緩やかなカーブに該当するものとする。これは池などの底面にたまったものを巻き上げないように低抵抗とするためである。係る構成により、浚渫用取込口構造体の進行方向における柵の領域を、直線の柵を用いる場合より拡大することができる。これにより、浚渫用取込口構造体の内側への枝やごみなどの進入をより防止することができる。 FIG. 7 is a perspective view showing an example of the dredging intake port structure of the present embodiment. As shown in the figure, in the dredging intake structure, the fence (0701) is arranged toward the lower end of the back surface (0703) in a gentle curve from the substantially front end of the upper surface (0702). A gentle curve does not necessarily have to be composed only of a curve, and even if it is composed by connecting straight lines, it shall correspond to the gentle curve referred to in the present invention. For example, even if it is configured as shown in FIG. 3, it is assumed that it corresponds to a gentle curve. This is to make the resistance low so as not to wind up things that have accumulated on the bottom such as a pond. With such a configuration, the area of the fence in the traveling direction of the dredging intake structure can be expanded as compared with the case of using a straight fence. As a result, it is possible to further prevent the entry of branches, dust, etc. into the inside of the dredging intake structure.

図8は、図7に示した浚渫用取込口構造体の上面図(a)及び底面図(b)である。図示するように、背面(0801)は、進行方向に開く略V字状に形成される。また、取込口(0802)は、背面の略V字状の角部分に配置されている。このように構成することにより、側面側にて取り込んだ泥や砂であっても取込口へ円滑に導入される。
<実施形態2 効果>
8 is a top view (a) and a bottom view (b) of the dredging intake port structure shown in FIG. 7. FIG. As shown in the figure, the back surface (0801) is formed in a substantially V shape that opens in the traveling direction. Further, the intake port (0802) is arranged at a substantially V-shaped corner portion on the back surface. With this configuration, even mud and sand taken in on the side surface side can be smoothly introduced into the take-in port.
<Effect of Embodiment 2>

本実施形態の浚渫用取込口構造体により、取込口が枝やごみなどにより詰まることを十分に防止することができる。
<実施形態3>
<実施形態3 概要>
The dredging intake port structure of the present embodiment can sufficiently prevent the intake port from being clogged with branches, dust, or the like.
<Embodiment 3>
<Outline of Embodiment 3>

本実施形態の浚渫用取込口構造体は、実施形態1又は2を基本とし、水底を掘るための爪を有することを特徴とする。
<実施形態3 構成>
The dredging intake structure of the present embodiment is based on the first or second embodiment, and is characterized by having a claw for digging the bottom of the water.
<Structure 3 of Embodiment>

図9は、本実施形態の浚渫用取込口構造体の一例を示す概念図である。図示するように、浚渫用取込口構造体の下側に、爪(0901)が配置される。本例では、一方の側面(0902)と他方の側面との間に渡される回転軸(0903)とともに板状の爪が取り付けられている。爪の先端は、上面と非平行に向き、その先端が仮想的な水底面に向けられている。この爪により、水底が硬く締まっているような場合であっても、水底を掘り込むことで泥や砂を浚い取ることが可能となる。 FIG. 9 is a conceptual diagram showing an example of the dredging intake port structure of the present embodiment. As shown in the figure, a claw (0901) is arranged under the dredging intake structure. In this example, a plate-shaped claw is attached together with a rotating shaft (0903) passed between one side surface (0902) and the other side surface. The tip of the claw is oriented non-parallel to the top surface, with its tip facing the virtual bottom of the water. With these claws, even when the bottom of the water is tight, it is possible to remove mud and sand by digging the bottom of the water.

図10は、本実施形態の浚渫用取込口構造体の一例の側面図である。図示するように、爪(1001)を回転軸(1002)とともに取り付けることで先端の向きを調整可能に構成している。図10(a)は爪の先端を上側向きにした状態を示し、図10(b)は爪の先端を下側向きにした状態を示している。
<実施形態3 効果>
FIG. 10 is a side view of an example of the dredging intake port structure of the present embodiment. As shown in the figure, the direction of the tip can be adjusted by attaching the claw (1001) together with the rotating shaft (1002). FIG. 10A shows a state in which the tip of the nail is facing upward, and FIG. 10B shows a state in which the tip of the nail is facing downward.
<Effect of Embodiment 3>

本実施形態の浚渫用取込口構造体により、水底が硬く締まっている場合であっても、水底を掘り込むことで泥や砂を浚い取ることが可能となる。 The dredging intake structure of the present embodiment makes it possible to remove mud and sand by digging the water bottom even when the water bottom is tightly tightened.

0301 浚渫用取込口構造体
0302 上面
0303 背面
0304 側面
0305 柵
0306 取込口
0307 吸込管
0308 移動用シャフト連結部材
0301 Dredging intake structure 0302 Top surface 0303 Back surface 0304 Side surface 0305 Fence 0306 Intake port 0307 Suction pipe 0308 Moving shaft connecting member

Claims (7)

上面と、
上面の進行方向後端に配置される背面と、
側面と、
背面下端近傍に設けられる浚渫対象となる泥や砂などを吸い上げるための取込口と、
進行方向に向けた開口であって、上面略前端から背面下端まで形成される開口と、
上面略前端から背面下端まで形成されて取込口がつまるサイズの物を取込口に入れないための間隙が前記取込口の内径以下の柵と、
を有する浚渫用取込口構造体。
On the top and
The back surface located at the rear end in the traveling direction of the upper surface and the back surface
On the side,
An intake port provided near the lower end of the back surface for sucking up mud and sand to be dredged,
An opening in the direction of travel, which is formed from the substantially front end of the upper surface to the lower end of the back surface.
A fence that is formed from the substantially front end of the upper surface to the lower end of the back surface and has a gap that is smaller than the inner diameter of the intake port so that an object of a size that the intake port is clogged cannot be inserted into the intake port.
Intake structure for dredging.
背面は進行方向に開く略V字状である請求項1に記載の浚渫用取込口構造体。 The dredging intake structure according to claim 1, wherein the back surface is substantially V-shaped and opens in the traveling direction. 前記柵は、上面略前端から緩やかなカーブを描いて背面下端に向けて配置される請求項1又は2に記載の浚渫用取込口構造体。 The dredging intake structure according to claim 1 or 2, wherein the fence is arranged toward the lower end of the back surface while drawing a gentle curve from the substantially front end of the upper surface. 取込口は背面の前記略V字状の角部分に配置される請求項2又は請求項2に従属する請求項3に記載の浚渫用取込口構造体。 The dredging intake port structure according to claim 2 , wherein the intake port is arranged at the substantially V-shaped corner portion on the back surface. 取込口は背面の高さ中心よりも取込口開口中心が下側に位置する請求項1から4のいずれか一に記載の浚渫用取込口構造体。 The dredging intake port structure according to any one of claims 1 to 4, wherein the intake port is located below the center of the height of the back surface. 柵を構成している棒材は断面矩形の角棒材であり、仮想的な水底面に対してその一面が対向するように配置されている請求項1から5のいずれか一に記載の浚渫用取込口構造体。 The dredging according to any one of claims 1 to 5, wherein the bar material constituting the fence is a square bar material having a rectangular cross section and is arranged so that one side thereof faces the virtual water bottom surface. Intake port structure. 下側に上面と非平行で仮想的な水底面に先端を向けて配置される爪を有する請求項1から6のいずれか一に記載の浚渫用取込口構造体。 The dredging intake structure according to any one of claims 1 to 6, which has a claw on the lower side that is non-parallel to the upper surface and is arranged with the tip facing a virtual bottom surface of the water.
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