JP7011418B2 - Dredging intake structure - Google Patents

Dredging intake structure Download PDF

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JP7011418B2
JP7011418B2 JP2017148852A JP2017148852A JP7011418B2 JP 7011418 B2 JP7011418 B2 JP 7011418B2 JP 2017148852 A JP2017148852 A JP 2017148852A JP 2017148852 A JP2017148852 A JP 2017148852A JP 7011418 B2 JP7011418 B2 JP 7011418B2
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勝利 渡邉
岩夫 松原
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岩夫 松原
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Description

本発明は、池、湖、沼など(以下「池等」という。)の水底に堆積している汚泥を浚い取る浚渫機において泥土を取り込むための浚渫用取込口構造体に関する。 The present invention relates to a dredging intake structure for taking in sludge in a dredging machine for dredging sludge accumulated on the bottom of a pond, lake, swamp or the like (hereinafter referred to as "pond or the like").

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。特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池等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 adsorbing radioactive cesium flows into the water area due to rainfall or the like and accumulates on the bottom of a closed water area such as a pond, resulting in an increase in the concentration 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、水底表層の深さ数センチメートルから十数センチメートル程度の泥土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。特許文献1には、従来の組み立て作業用台船が、特許文献2には、従来型の浚渫機が開示されている。 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 the mud with a depth of several centimeters to a dozen centimeters on the surface of the bottom of the water with a dredger. Patent Document 1 discloses a conventional assembly work pontoon, and Patent Document 2 discloses a conventional dredging machine.

特許文献1に開示されるような従来の組立式作業台船は、単に浮体の集合体であって、浚渫用装置を備えたものではないことから、浚渫する場合には、別途浚渫機を用意する必要がある。また、特許文献2に開示されるような従来の浚渫機を用いる場合、水底が固い場合や石などを多く含む場合であっても効率よく泥土の吸引ができるようにするため、例えば、先端に刀を備える撹拌羽を回転軸に設け、この撹拌羽を回転させて水底をかき回して泥土の吸引を行っている。 Since the conventional assembly-type workbench as disclosed in Patent Document 1 is merely an aggregate of floating bodies and is not equipped with a dredging device, a dredging machine is separately prepared for dredging. There is a need to. Further, when a conventional dredging machine as disclosed in Patent Document 2 is used, for example, in order to enable efficient suction of mud even when the water bottom is hard or when a large amount of stones are contained, for example, at the tip. A stirring blade equipped with a sword is provided on the rotating shaft, and the stirring blade is rotated to stir the bottom of the water to suck mud.

特開2002-37181号公報JP-A-2002-37181. 特開2008-31745号公報Japanese Unexamined Patent Publication No. 2008-31745

水底の汚泥を回収する場合において最も注意を払うべきは、汚泥をしっかりとすくい上げること、並びに汚泥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、水底において鎮静化している汚泥を水中に拡散させてしまうことのないよう行わなければならない。しかしながら、上記特許文献1、特許文献2の発明はどちらも用途が限定されていない作業用の台船であり、仮にこれを用いて除染するとなると、台船上に別途浚渫装置を設置することになり、従来型の浚渫機によっては除染すべき池等の水底の表面のみを静かにすくい取ることが困難であり、移動の際に取り込まれた汚泥が巻き上がってしまうことがあるという問題があった。そのため,浚渫構造体の移動において浚渫対象を効率よく浚う技術が望まれていた。 The most important thing to pay attention to when collecting sludge on the bottom of the water is to scoop up the sludge firmly and to prevent the sludge from being rolled up and diffused into the water. That is, the sludge that has calmed down at the bottom of the water must not be diffused into the water. However, the inventions of Patent Document 1 and Patent Document 2 are both work pontoons whose use is not limited, and if decontamination is to be performed using these, a separate dredging device will be installed on the pontoon. Therefore, depending on the conventional dredging machine, it is difficult to gently scoop only the surface of the bottom of the water such as a pond to be decontaminated, and the sludge taken in during movement may be rolled up. there were. Therefore, a technique for efficiently dredging the dredged object in the movement of the dredged structure has been desired.

本発明は,そのような課題を解決するため,進行方向後端部にて側面間にわたされる浚渫対象をすくい上げるための爪部を有する浚渫用取込口構造体を提供する。具体的には,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と、上面略前端から背面下端に向けて取込口が詰まるサイズの物を取込口に入れないための柵と、自身を水底上で移動させるための移動用シャフトと、進行方向後端部にて前記側面間に渡される浚渫対象をしっかりとすくい上げるための前方に張り出した爪部と、を有する浚渫用取込口構造体を提供する。 In order to solve such a problem, the present invention provides a dredging intake structure having a claw portion for scooping up a dredged object that is passed between the side surfaces at the rear end portion in the traveling direction. Specifically, 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 traveling direction. A facing opening, a fence to prevent objects of a size that is clogged from the front end of the upper surface to the lower end of the back, and a moving shaft to move itself on the bottom of the water, and the direction of travel. Provided is a dredging intake structure having a front overhanging claw portion for firmly scooping up a dredging target passed between the side surfaces at a rear end portion.

本発明により,浚渫用取込口構造体の移動において、進行方向後端部にて前記側面間に渡される浚渫対象をしっかりとすくい上げる機能を備えた浚渫用取込口構造体を提供することができる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a dredging intake structure having a function of firmly scooping up a dredging target passed between the side surfaces at the rear end in the traveling direction in the movement of the dredging intake structure. can.

浚渫用取込口構造体の基本的な構造を示す斜視図(前方より見たもの)Perspective view showing the basic structure of the dredging intake structure (viewed from the front) 浚渫用取込口構造体における爪部位置の構造図(斜め上から見たもの)Structural drawing of the claw position in the dredging intake structure (viewed from diagonally above) 浚渫用取込口構造体における爪部位置の構造図(斜め下からみたもの)Structural drawing of the claw position in the dredging intake structure (viewed from diagonally below) 浚渫用取込口構造体における爪部位置の側面図Side view of the claw position in the dredging intake structure 浚渫用取込口構造体における爪部角度調整機能を説明する側面図Side view explaining the claw angle adjustment function in the dredging intake structure 浚渫用取込口構造体の構造図(上から見たもの)Structural drawing of the dredging intake structure (viewed from above) 爪部の役割に関する説明図Explanatory drawing about the role of the nail 爪部の役割を汚泥の量との関係で示す説明図Explanatory drawing showing the role of the claws in relation to the amount of sludge 爪部の形状のバリエーションの説明図Explanatory drawing of variation of the shape of the claw 浚渫用取込口構造体とフロート集合の全体図Overall view of dredging intake structure and float set

以下に本件発明の実施形態を説明する。以下実施形態1は請求項1に、実施形態2は請求項2、実施形態3は請求項3にそれぞれ対応している。
<実施形態1>
An embodiment of the present invention will be described below. Hereinafter, the first embodiment corresponds to the first claim, the second embodiment corresponds to the second claim, and the third embodiment corresponds to the third claim.
<Embodiment 1>

<実施形態1概要> <Outline of Embodiment 1>

本実施形態の浚渫用取込口構造体は、背面下端部に前方へ張り出した爪部を有し、池等の水底上に堆積している放射性セシウムなど有害物を含む汚染泥土の浚渫時、拡散を抑えつつ、しっかりと効率的に取り込むことができる。
<構成>
The dredging intake structure of the present embodiment has a claw portion protruding forward at the lower end of the back surface, and when dredging contaminated mud containing harmful substances such as radioactive cesium deposited on the bottom of a pond or the like. It can be taken in firmly and efficiently while suppressing diffusion.
<Structure>

本浚渫用取込口構造体は、上面(0101)、背面(0102)と、側面(0103)と、取込口(0104)と、開口(0109)と、柵(0106)と、移動用シャフト(0107)と、底面にあり前方へ張り出した爪部(0105)とからなる。
以下、各部の構成について説明する。
<上面>
The main dredging intake structure includes an upper surface (0101), a back surface (0102), a side surface (0103), an intake port (0104), an opening (0109), a fence (0106), and a moving shaft. It is composed of (0107) and a claw portion (0105) on the bottom surface and protruding forward.
Hereinafter, the configuration of each part will be described.
<Top surface>

「上面」(0101)は本浚渫用取込口構造体の上部に位置し、水底上で移動するための移動用シャフト(0107)を備える。その移動用シャフトの長さは水底までの距離に合わせて調整できる。 The "top surface" (0101) is located above the main dredging intake structure and includes a moving shaft (0107) for moving on the bottom of the water. The length of the moving shaft can be adjusted according to the distance to the bottom of the water.

「上面」(0101)は開口から浚渫用取込口構造体の内部に取り込んだ汚泥を取込口へと運ぶのと同時に、汚泥の巻き上がりを抑える機能を有する。
<背面>
The "upper surface" (0101) has a function of carrying the sludge taken into the inside of the dredging intake structure from the opening to the intake port and at the same time suppressing the sludge from rolling up.
<Back>

「背面」(0103)は上面の進行方向後端に配置される。「背面」には開口から取り込まれた放射線セシウムの汚染泥土を取込管へ送る取込口が備わる。
<側面>
The "back surface" (0103) is located at the rear end of the upper surface in the traveling direction. The "rear side" is equipped with an intake port that sends the contaminated mud of radioactive cesium taken in from the opening to the intake pipe.
<Side>

「側面」(0103)は本体の進行方向左右に設置され、上面に対し前端から後端に緩やかに高さが高くなることで、取り込んだ汚泥が左右に拡散することを防止する。また浚渫用取込口構造体の強度を確保する。側面が上面と接する先端部には開口(0109)、柵(0106)が備わり、柵から取り込まれる汚泥を安定的に取込管へ送り込む。
<取込口>
The "side surfaces" (0103) are installed on the left and right sides in the traveling direction of the main body, and the height is gradually increased from the front end to the rear end with respect to the upper surface, thereby preventing the sludge taken in from spreading to the left and right. Also, ensure the strength of the dredging intake structure. An opening (0109) and a fence (0106) are provided at the tip where the side surface is in contact with the upper surface, and sludge taken in from the fence is stably sent to the intake pipe.
<Intake port>

「取込口」(0104)は、背面下端近傍に設けられ、開口より浚い取った放射線セシウムに汚染した泥や砂などを取込管へ送り出す。取込管は水上のフロートを経由し、池の縁等陸上にある保管場所へ汚泥を送る。
<開口>
The “intake port” (0104) is provided near the lower end of the back surface, and sends out mud and sand contaminated with radioactive cesium collected from the opening to the intake pipe. The intake pipe sends sludge to a storage place on land such as the edge of a pond via a float on the water.
<Opening>

「開口」(0109)は、浚渫のため、水底の泥土を浚い取るよう構成される浚渫用取込口の上面、背面、側面に挟まれる形で進行方向に設置されている。開口は前端から背面まで続いており、水底面上の汚泥の巻き上げを抑え、また取り込む汚泥を取込管に送り出すことにより、汚泥の中での進行を可能としている。
<柵>
The "opening" (0109) is installed in the traveling direction so as to be sandwiched between the upper surface, the back surface, and the side surface of the dredging intake port configured to dredge the mud on the bottom of the water for dredging. The opening extends from the front end to the back, suppressing the sludge from rolling up on the bottom of the water, and by sending the sludge to be taken in to the intake pipe, it is possible to proceed in the sludge.
<Fence>

「柵」(0106)は開口部(0109)に備わり、取込時のつまりの原因となりうるサイズの枝など異物の侵入を妨げるものである。池等の水底に滞積する木枝の大きさ等を考慮し、柵間及び柵と側面の幅が略8cm以下となるよう設定することが好ましい。 The "fence" (0106) is provided in the opening (0109) to prevent foreign matter such as branches of a size that can cause clogging at the time of taking in. Considering the size of the tree branches that accumulate on the bottom of the water such as a pond, it is preferable to set the width between the fences and between the fences and the side surfaces to be about 8 cm or less.

また「柵」の先端は本体下面において後方に向け曲げられる。「柵」により、枝等の異物を遮断し、池等の水底に堆積される砂、小石、泥など汚染された汚泥を取り込む。
<移動用シャフト>
The tip of the "fence" is bent backward on the lower surface of the main body. The "fence" blocks foreign substances such as branches and takes in contaminated sludge such as sand, pebbles, and mud accumulated on the bottom of water such as ponds.
<Moving shaft>

「移動用シャフト」(0107)は、本浚渫用取込口構造体の上面に設けられ自身を池等の水底上で移動させるための支持柱である。移動用シャフトの長さを調節することにより水深に対応し、池等の水中を必要以上にかき回すことなく水底表面の汚泥を取り込める。 The "moving shaft" (0107) is a support column provided on the upper surface of the main dredging intake structure and for moving itself on the bottom of a pond or the like. By adjusting the length of the moving shaft, it corresponds to the water depth and can take in sludge on the bottom surface of the water without stirring the water such as a pond more than necessary.

図10は爪部を有する浚渫用取込口構造体(1001)、移動用シャフト(1002)、櫓(1003)を有するフロート集合体(1004)からなる全体の構成図である。移動用シャフトを水上で受けるフロート集合体の櫓は、レール(1005)上に設置され、車輪(1006)によりフロート上での移動が可能であり、池等の状況に対応してより効率的な浚渫作業を行うことができる。
<爪部>
FIG. 10 is an overall configuration diagram including a dredging intake structure (1001) having a claw portion, a moving shaft (1002), and a float assembly (1004) having a turret (1003). The float assembly turret that receives the moving shaft on the water is installed on the rail (1005) and can be moved on the float by the wheels (1006), which is more efficient in response to the situation of ponds and the like. Can perform dredging work.
<Claws>

「爪部」(0105)は浚渫用取込口構造体の後端下部に前方に張り出し備えられる。背面の形状によりその前後の位置は異なるが、いずれも下部であり、その役目が最も効果的に果たせるよう設置される。代表的なものは前記側面間に渡される浚渫対象をしっかりすくい上げるため背面の下部から前方に張り出すもので、池等の水底より巻き上げられる濁りである浮泥を吸い取るために設置される。 The "claw portion" (0105) is provided so as to project forward to the lower part of the rear end of the dredging intake structure. The front and back positions differ depending on the shape of the back, but both are at the bottom and are installed so that their role can be fulfilled most effectively. A typical one is one that projects forward from the lower part of the back surface in order to firmly scoop up the dredged object passed between the side surfaces, and is installed to absorb the turbid fluid mud that is rolled up from the bottom of the water such as a pond.

図2は浚渫用取込口構造体の内部構造図である。内部の構造がわかるよう上面を取り払い、斜め上から内部を概観したものである。図2において、背面の形状は取り込んだ汚泥を取込口に送りやすいV字型となっているため、爪部(0201)は後端よりも前端に近づいた逆三角形の底面(0202)の前端に備わり、柵(0204)を通過し側面(0203)間に渡される池等の汚泥をしっかりとすくい取込口(0205)から取込管(0206)へ送る役目を果たしている。このようにV字型背面の良さをさらに生かせる位置に爪部が備わっている。 FIG. 2 is an internal structural view of the dredging intake structure. The upper surface is removed so that the internal structure can be seen, and the interior is viewed from diagonally above. In FIG. 2, since the shape of the back surface is V-shaped so that the sludge taken in can be easily sent to the intake port, the claw portion (0201) is the front end of the bottom surface (0202) of the inverted triangle that is closer to the front end than the rear end. The sludge such as a pond that passes through the fence (0204) and is passed between the side surfaces (0203) is firmly scooped up and sent from the intake port (0205) to the intake pipe (0206). In this way, the claws are provided at positions where the goodness of the V-shaped back can be further utilized.

図3は浚渫用取込口構造体を斜め下から見た内部構造図である。背面が平面の場合のため、爪部は背面に接している形になる。上面前端に設置され後端へ向かう柵は、説明上すべて描かれておらず途切れた状態となっている。柵(0303)を通過し側面(0302)間に渡される池等の汚泥は取込口(0304)から取込管(0305)へ送られる。同時に爪部が内部に取り込んだ汚泥も取込口から取込管へと送られる。 FIG. 3 is an internal structural view of the dredging intake structure as viewed from diagonally below. Since the back surface is flat, the claws are in contact with the back surface. The fence installed at the front end of the upper surface and heading to the rear end is not drawn at all for the sake of explanation and is in a broken state. Sludge such as a pond that passes through the fence (0303) and is passed between the side surfaces (0302) is sent from the intake port (0304) to the intake pipe (0305). At the same time, the sludge taken in by the claws is also sent from the intake port to the intake pipe.

図4は爪部を備えた取込口構造体の側面図である。側面(0402)間を渡される池等の水底の汚泥は、爪部(0401)により効率的に、拡散することなく取込管(0403)へ送られる。爪部は後端下部に前方に張り出し備えられており、図からわかるように、備えがない場合取りこぼすような、背面より下の池等の水底面上にある汚泥その他の異物を取り込むことができる。この場合異物の硬度は一定の硬度以下であることが取り込みの条件となるが、水底面が必ずしも平面であるとは限らないため、汚泥取り込みは爪部の設置により大幅に改善される。 FIG. 4 is a side view of the intake structure provided with the claw portion. The sludge on the bottom of the water such as a pond passed between the side surfaces (0402) is efficiently sent to the intake pipe (0403) by the claw portion (0401) without being diffused. The claws are provided so as to project forward at the bottom of the rear end, and as can be seen from the figure, sludge and other foreign substances on the bottom of the water such as ponds below the back can be taken in, which would be missed if not provided. can. In this case, the condition for taking in foreign matter is that the hardness of the foreign matter is equal to or less than a certain hardness, but since the bottom surface of the water is not always flat, sludge uptake is greatly improved by installing the claws.

図7は水底に堆積する汚泥と爪部の有効性を示す取込口構造体の側面図である。図にあるように浚渫用取込口構造体の作業と移動に呼応して、堆積する汚泥が斜面となる。爪部はこの斜面に対応し、爪部がない場合には取り込めない斜面となっている汚泥を取り込むことができる。図では取込口構造体が汚泥を浚渫しているが、水底の角度の影響で浚渫用取込口構造体の後ろの部分と斜面の間に隙間ができており、爪部がなければ、十分に汚泥を取り込むことができない。図の爪部にある白矢印は、爪部がない場合取り込むことができない汚泥が、爪部の設置により取り込めることを示している。 FIG. 7 is a side view of the intake structure showing the effectiveness of the sludge accumulated on the water bottom and the claw portion. As shown in the figure, the sludge that accumulates becomes a slope in response to the work and movement of the dredging intake structure. The claw portion corresponds to this slope, and sludge that is a slope that cannot be taken in without the claw portion can be taken in. In the figure, the intake structure is dredging sludge, but due to the influence of the angle of the water bottom, there is a gap between the back part of the dredging intake structure and the slope, and if there is no claw part, Not enough sludge can be taken in. The white arrows on the claws in the figure indicate that sludge that cannot be taken in without the claws can be taken in by installing the claws.

図8は池等の水底に堆積している汚泥と浚渫用取込口構造体の位置に関する説明図となっている。図8(a)は浚渫用取込口構造体の上面略前端が汚泥の下に埋もれており、浚渫用取込口構造体の上部から上にある汚泥を取り込むことができず、上部では泥土が拡散している。一方背面下部には爪部があり、意図どおりに汚泥の取り込みが行われる。図8(b)は浚渫用取込口構造体の上面先端に庇を取り付けた場合であるが、庇が汚泥堆積の高さよりもやや高いため汚泥を拡散させずに取り込むことができるのに加え、爪部があるため、爪部がない場合に比べ、汚泥を下部からもしっかり取り込むので、取込効率は高くなっている。図8(c)のように浚渫用取込口構造体の略前端が堆積する泥土よりもはるかに高いところにある場合、爪部がない場合は取り込みの効率は落ちるが、爪部がある場合は、他の場合と同様、汚泥の取込み、汚泥の拡散防止に効果を発揮することがわかる。 FIG. 8 is an explanatory diagram regarding the positions of the sludge accumulated on the bottom of the water such as a pond and the dredging intake structure. In FIG. 8A, the substantially front end of the upper surface of the dredging intake structure is buried under the sludge, and the sludge above the dredging intake structure cannot be taken in from the upper part, and the upper part is mud. Is spreading. On the other hand, there is a claw on the lower part of the back, and sludge is taken in as intended. FIG. 8B shows a case where the eaves are attached to the tip of the upper surface of the dredging intake structure. In addition, since the eaves are slightly higher than the height of the sludge deposit, the sludge can be taken in without being diffused. Since there is a claw part, sludge is taken in from the lower part more firmly than when there is no claw part, so the taking-in efficiency is high. When the substantially front end of the dredging intake structure is located far higher than the accumulated mud as shown in FIG. 8 (c), the efficiency of intake decreases when there is no claw, but when there is a claw. Is effective in taking in sludge and preventing the spread of sludge as in other cases.

図9は爪部主要部形状の上から見た場合のバリエーションを示している。爪部は形状が異なることにより機能が変化する。図9(a)は上から見て標準の長方形となっており、これまでの説明はこの形状に基づいている。上記の説明にある通常の浚渫作業に対応できる形状ということができる。図9(b)は進行方向が鋭角となる台形の形状である。水底面上の汚泥の硬度が通常より高い場合や、水底に硬い石等など多少の障害物がある場合などに有効である。先端を頂点とする三角形の部分が図9(a)の面積よりも大きくなるため、汚泥を取り込む範囲自体が広くなることにより泥土の取り込み量が多くなるため、効率がよい。図9(c)は図9(b)では先端部が角度を持ち三角形となるのに対し、中央の頂点を引っ張られるように左右が円弧を描いているものである。そのため図9(b)よりもさらに硬度が高い汚泥に有効であり、水底の石等異物に対する対応力が高くなっている。図9(d)は進行方向前面が図(b)と違い弧を描いているものであり、爪部自体がこれらのバリエーションの中では最も大きな面積を持つため、比較的やわらかい汚泥や異物の少ない水底上の場合に汚泥を取り込む量が多く、効率的な作業ができる。 FIG. 9 shows variations when viewed from above the shape of the main portion of the claw portion. The function of the claw part changes depending on the shape. FIG. 9A is a standard rectangle when viewed from above, and the description so far is based on this shape. It can be said that the shape can correspond to the normal dredging work described above. FIG. 9B is a trapezoidal shape with an acute angle of travel. It is effective when the hardness of sludge on the bottom of the water is higher than usual, or when there are some obstacles such as hard stones on the bottom of the water. Since the triangular portion having the tip as the apex is larger than the area of FIG. 9A, the sludge uptake range itself is widened, and the amount of mud uptake increases, which is efficient. In FIG. 9 (c), the tip portion has an angle and becomes a triangle in FIG. 9 (b), whereas the left and right arcs are drawn so that the central apex is pulled. Therefore, it is effective for sludge having a higher hardness than that of FIG. 9B, and has a high ability to deal with foreign substances such as stones on the bottom of the water. In FIG. 9 (d), the front surface in the traveling direction draws an arc unlike the figure (b), and since the claw portion itself has the largest area among these variations, there is relatively little sludge and foreign matter. When it is on the bottom of the water, the amount of sludge taken in is large, and efficient work can be performed.

<実施形態2概要>
<概要>
<Outline of Embodiment 2>
<Overview>

本実施例の発明は、実施例の1の特徴に加えて、背面下端に備わる爪部(0101)が角度調整可能となっている浚渫用取込口構造体である。爪部の角度が調整可能であるため、角度を調節し汚泥の取り込みを状況に合わせてしっかり行うと同時に、浚渫用取込口構造体の移動において汚泥が巻き上がってしまうことを防止する。汚泥を効率的に取り込むためにこの浚渫用取込口構造体が取り付けられているフロート体の移動速度や汚泥の硬度、粘度などさまざまな条件を考慮しなければならないが、爪部の角度を調整することにより、爪部がない場合よりも多くの条件に比較的容易に対応できることになる。池底面の硬度が低い場合、または汚泥の粘度が低い場合は、爪部の水底面との角度を大きく、すなわち爪部を開くことにより大量の汚泥を取り込むことができる。一方汚泥の粘土が高い場合は、爪部の水底面との角度を小さくし、すなわち爪部を閉め気味にすることにより、汚泥を効率的に取り込むことができる。また作業時間を短縮する場合には、爪部を閉じ池等の水の抵抗を少なくすることができる。逆に作業時間に余裕がある場合は、取込量を優先し、爪部の角度を開きことができる。 The invention of the present embodiment is a dredging intake structure in which the angle of the claw portion (0101) provided at the lower end of the back surface can be adjusted, in addition to the feature of the first embodiment. Since the angle of the claws can be adjusted, the sludge can be taken in according to the situation by adjusting the angle, and at the same time, the sludge can be prevented from being rolled up when the dredging intake structure is moved. In order to take in sludge efficiently, various conditions such as the moving speed of the float body to which this dredging intake structure is attached, the hardness of sludge, and the viscosity must be taken into consideration, but the angle of the claws is adjusted. By doing so, it becomes possible to cope with many conditions relatively easily as compared with the case where there is no claw portion. When the hardness of the bottom surface of the pond is low or the viscosity of the sludge is low, a large amount of sludge can be taken in by increasing the angle of the claw portion with the water bottom surface, that is, by opening the claw portion. On the other hand, when the clay of the sludge is high, the sludge can be efficiently taken in by reducing the angle of the claws with the water bottom, that is, by closing the claws. Further, when the working time is shortened, the claws can be closed to reduce the resistance of water such as a pond. On the contrary, if there is a margin in working time, the intake amount can be prioritized and the angle of the claw portion can be opened.

図5は浚渫用取込口構造体の爪部の角度調整機能に関する説明図である。爪部(0501)は角度調整用有孔金属板(0502)と爪部用のボルトとナット(0503)及び有孔金属板に使用する角度調整用ボルトとナット(0504)を使うことにより、池等の水底表面に対する爪部の角度を調整することができるため、池等の水底に堆積する汚泥の粘度ほかの条件を考慮し、最も効率的な爪部の角度を選ぶことができる。爪部を浚渫用取込口構造体の下端に有し、その角度を調節できることにより、池等の水底面に対する対応幅が広がるため、汚泥の取込効率がさらに向上する。同時に爪部により浚渫用取込口構造体の下部から拡散する汚泥を、爪部がない場合に比べしっかり取り込むことができる。 FIG. 5 is an explanatory diagram relating to the angle adjusting function of the claw portion of the dredging intake port structure. The claw portion (0501) is a pond by using a perforated metal plate (0502) for angle adjustment, a bolt and nut (0503) for the claw portion, and an angle adjustment bolt and nut (0504) used for the perforated metal plate. Since the angle of the claws with respect to the surface of the bottom of the water can be adjusted, the most efficient angle of the claws can be selected in consideration of the viscosity and other conditions of the sludge deposited on the bottom of the water such as a pond. By having the claws at the lower end of the dredging intake structure and adjusting the angle, the range of correspondence to the bottom of the water such as a pond is widened, and the sludge intake efficiency is further improved. At the same time, sludge diffused from the lower part of the dredging intake structure by the claws can be taken in more firmly than when there is no claws.

汚泥の粘土が高く、また水底に石などの異物が想定される場合、爪部の浚渫用取込口構造体本体との角度を例えば10度前後とすることにより、異物の影響を最小限に抑えながら汚泥を取り込むことができる。反対に汚泥の粘土が低く、また水底に石などの異物が想定されないような場合、この角度を30度前後に設定することにより、大量の汚泥を効率よく取り込むことができる。角度をそれ以上広げると、例えば45度前後以上に広げると、爪部自体が進行方向に対する抵抗となり、浚渫用取込口構造体本体の進行の妨げとなることが考えられるため、注意が必要となる。 If the clay of the sludge is high and foreign matter such as stones is expected on the bottom of the water, the influence of the foreign matter can be minimized by setting the angle of the claw with the dredging intake structure body, for example, around 10 degrees. Sludge can be taken in while suppressing it. On the contrary, when the clay of sludge is low and foreign matter such as stones is not expected on the bottom of the water, a large amount of sludge can be efficiently taken in by setting this angle to around 30 degrees. If the angle is widened further, for example, if it is widened to around 45 degrees or more, the claws themselves will become resistance to the direction of travel, which may hinder the progress of the dredging intake structure body, so caution is required. Become.

<実施形態3概要>
<概要>
<Outline of Embodiment 3>
<Overview>

本実施例の発明は実施例1または実施例2に記載の特徴に加え、背面は取込口を中心にV字状に形成され、爪部が逆三角形の底面の進行方向前方に設けられている浚渫用取込口構造体である。V字状の背面の泥土の効率的な取込口への送りと爪部の配置により、取込効率を高めている。V字状の背面は、進行方向略前端の開口部から異物侵入防止用の柵を通過して取り込んだ汚泥を、側面に加え背面のV字形状に沿い取込口を経て取込管へ効率的に送り込むことができる。爪部は背面ではなく、底面の逆三角形の進行方向最前端に取り付けることにより、V字状の背面の特性を損なうことなく、爪部として浚渫用取込口構造体下端の汚泥をしっかり取り込み、同時に拡散を防ぐという働きをし、効率的に取込口に汚泥を送り込むことができる。 In addition to the features described in Example 1 or Example 2, the invention of this embodiment has a back surface formed in a V shape centered on an intake port, and a claw portion is provided in front of the bottom surface of an inverted triangle in the traveling direction. It is an intake structure for dredging. The V-shaped back surface of the mud is efficiently fed to the intake port and the claws are arranged to improve the intake efficiency. The V-shaped back surface is efficient for sludge taken in from the opening at the front end in the direction of travel, passing through a fence to prevent foreign matter from entering, to the intake pipe along the V-shaped shape on the back surface in addition to the side surface. Can be sent in. By attaching the claw part not to the back surface but to the front end of the inverted triangle on the bottom surface in the traveling direction, sludge at the lower end of the dredging intake structure can be firmly taken in as the claw part without impairing the characteristics of the V-shaped back surface. At the same time, it works to prevent diffusion, and sludge can be efficiently sent to the intake port.

図6はV字型の背面を持つ浚渫用取込口構造体を斜め上から見た場合の構造説明図である。ここでは説明上一部しか描かれていない柵(0601)を通過した池等の水底の汚泥は側面(0602)間を渡り、爪部(0603)に拡散を防止され、底面(0604)に続きV字形状に配置される背面(0605)に到達し、取込口(0606)へと集められ、取込管(0607)と送られる。V字形状の背面により構成される逆三角形の底面の存在により、汚泥が滞留せずかつ拡散せず取込口に向かうことから浚渫作業が効率化される。進行方向に対し逆三角形の底面(0604)の先端に爪部を有することにより、V字形状の背面の利点と爪部の利点を同時に備えた効率の高い浚渫用取込口構造体となっている。 FIG. 6 is a structural explanatory view of a dredging intake port structure having a V-shaped back surface when viewed from diagonally above. Here, sludge on the bottom of the water such as a pond that has passed through the fence (0601), which is only partially drawn in the explanation, crosses between the side surfaces (0602), is prevented from spreading to the claws (0603), and continues to the bottom surface (0604). It reaches the back surface (0605) arranged in a V shape, is collected at the intake port (0606), and is sent to the intake pipe (0607). Due to the presence of the inverted triangular bottom surface composed of the V-shaped back surface, sludge does not stay and diffuse and heads toward the intake port, which makes the dredging work more efficient. By having a claw at the tip of the bottom surface (0604) of the inverted triangle with respect to the traveling direction, it becomes a highly efficient dredging intake structure that has the advantages of the V-shaped back surface and the claw at the same time. There is.

このV字型の背面のV字の角度が180度よりやや狭い場合は、背面が平面の場合と変わらないため、取り込んだ汚泥の取込口への運びに対する十分な効果は得られない。背面の作るV字の角度が90度に近づくにつれて、取り込んだ汚泥の取込口への運びは効率的になり、汚泥の粘土にかかわらず効率的な取込が期待できる。これに対し背面の作るV字の角度が90度より狭くなる場合、取込口の口径を考慮して角度を決定しなければならない。90度より角度を狭くするに従い、汚泥の粘土が高い場合にはV字型の作る三角形の部分に汚泥が滞留する場合も想定され、逆にV字型の効果が減少する。
When the V-shaped angle on the back surface of the V-shape is slightly narrower than 180 degrees, the back surface is the same as when the back surface is flat, so that a sufficient effect on the transport of the sludge taken in to the intake port cannot be obtained. As the angle of the V-shape formed on the back approaches 90 degrees, the sludge taken in is efficiently carried to the intake port, and efficient uptake can be expected regardless of the sludge clay. On the other hand, when the angle of the V-shape formed on the back surface is narrower than 90 degrees, the angle must be determined in consideration of the diameter of the intake port. As the angle is made narrower than 90 degrees, if the clay of the sludge is high, it is assumed that the sludge may stay in the triangular portion formed by the V-shape, and conversely, the effect of the V-shape decreases.

上面:0101
背面:0102、0605
側面:0103、0203、0302、0402、0602
取込口:0104、0205、0304、0606
取込管:0206、0305、0403、0607
開口部:0109
爪部:0105、0201、0301、0401、0501、0603
爪部角度調整用有孔金属板:0502
爪部ボルトとナット:0503
角度調節用ボルトとナット:0504
柵:0106、0204、0303、0601
移動用シャフト:0107
底面:0108、0202、0604
浚渫用取込口構造体:1001
櫓:1003
フロート:1004
レール:1005
櫓の車輪:1006
Top surface: 0101
Back: 0102, 0605
Side: 0103, 0203, 0302, 0402, 0602
Intake port: 0104, 0205, 0304, 0606
Intake pipe: 0206, 0305, 0403, 0607
Opening: 0109
Claw part: 0105, 0201, 0301, 0401, 0501, 0603
Perforated metal plate for adjusting the angle of the claw: 0502
Claw bolts and nuts: 0503
Angle adjustment bolts and nuts: 0504
Fence: 0106, 0204, 0303, 0601
Shaft for movement: 0107
Bottom: 0108, 0202, 0604
Dredging intake structure: 1001
Tower: 1003
Float: 1004
Rail: 1005
Wheels of the turret: 1006

Claims (2)

上面と
上面の進行方向後端に配置される平らな面である背面と、
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、上面略前端から平らな面である背面下端まで形成される開口と、
上面略前端から平らな面である背面下端まで形成されて取込口が詰まるサイズの物を取込口に入れないための柵と、
自身を水底上で移動させるための移動用シャフトと、
平らな面である背面下端にて前記側面間に渡される浚渫対象をすくい上げるための前方に張り出した板状の爪部と、を有する浚渫用取込口構造体。
The upper surface and the back surface, which is a flat surface arranged at the rear end in the traveling direction of the upper 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 that is formed from the substantially front end of the upper surface to the lower end of the back surface, which is a flat surface .
A fence that is formed from the approximately front end of the upper surface to the lower end of the back surface, which is a flat surface, and is sized to clog the intake port, and a fence to prevent entry into the intake port.
A moving shaft for moving itself on the bottom of the water,
A dredging intake structure having a plate-shaped claw portion overhanging forward for scooping up a dredging object passed between the side surfaces at the lower end of the back surface, which is a flat surface .
前記爪部は角度調整可能である請求項1に記載の浚渫用取込口構造体。 The dredging intake structure according to claim 1, wherein the claw portion has an adjustable angle.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100299972A1 (en) 2007-11-29 2010-12-02 Bruno Tack Drag head of a trailing suction hopper dredger and method for dredging using this drag head
JP3196857U (en) 2015-01-16 2015-04-09 株式会社リソースクリエイト Sauce intake structure
JP2016118088A (en) 2014-12-19 2016-06-30 アクアント株式会社 Dredging inlet structure
JP2018071104A (en) 2016-10-26 2018-05-10 岩夫 松原 Dredging intake structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100299972A1 (en) 2007-11-29 2010-12-02 Bruno Tack Drag head of a trailing suction hopper dredger and method for dredging using this drag head
JP2016118088A (en) 2014-12-19 2016-06-30 アクアント株式会社 Dredging inlet structure
JP3196857U (en) 2015-01-16 2015-04-09 株式会社リソースクリエイト Sauce intake structure
JP2018071104A (en) 2016-10-26 2018-05-10 岩夫 松原 Dredging intake structure

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