JP2005336840A - Dredging clamshell bucket - Google Patents

Dredging clamshell bucket Download PDF

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JP2005336840A
JP2005336840A JP2004156739A JP2004156739A JP2005336840A JP 2005336840 A JP2005336840 A JP 2005336840A JP 2004156739 A JP2004156739 A JP 2004156739A JP 2004156739 A JP2004156739 A JP 2004156739A JP 2005336840 A JP2005336840 A JP 2005336840A
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buckets
opening
right buckets
air vent
bucket
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JP4523334B2 (en
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Fukuichi Masuda
福一 増田
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FUKUMARU KENSETSU KK
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FUKUMARU KENSETSU KK
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/58—Component parts
    • E02F3/60—Buckets, scrapers, or other digging elements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Shovels (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To completely prevent leakage of sludge and sewage from a mating part of an opening surface of left-right buckets. <P>SOLUTION: In this clamshell bucket, the left bucket 4 and the right bucket 5 are rotatably arranged around support shafts 6 and 7 of a lower end part of left-right arms 2 and 3 having the upper end journaled to a machine body 1, and the mutual inside edges of the opening surface of the left-right buckets 4 and 5 are joined by a pivot shaft 8, and sediment of the sea bottom is dredged by opening-closing and moving the left-right buckets 4 and 5 by liftably operating its pivot shaft 8 by an opening-closing wire 11 of a crane. A part except for the opening surface of the left-right buckets 4 and 5 is formed into a sealed structure. Sealing packing 12 is installed in the mating part of the opening surface of the left-right buckets 4 and 5, and an air bleeding port 13 and an air bleeding door 14 for opening and closing this port are arranged on a back face of the left-right buckets 4 and 5. The mating part of its opening surface is made watertight when closing the left-right buckets 4 and 5 by grinding and processing the mating part of the opening surface of the left-right buckets 4 and 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、海底の土砂やヘドロなどをすくい上げて浚渫を行うクラムシェルバケットに関する。   TECHNICAL FIELD The present invention relates to a clamshell bucket that scoops up seabed sediment and sludge.

クラムシェルバケットは、左右のバケットの刃先部と底部で土砂を浚渫して、土運船に取り上げるものである。   The clamshell bucket is for picking up soil and sand at the blade tip and bottom of the left and right buckets and picking them up by an earth ship.

このようなクラムシェルバケットにおいては、左右のバケットで土砂を浚渫して土運船に取り上げるとき、バケットの上部が開放しているためバケット上部より汚泥や汚水がこぼれて、海洋汚染を引き起こすという問題があった。   In such clamshell buckets, when the left and right buckets are crushed and picked up by a ship, the upper part of the bucket is open and sludge and sewage spill out from the upper part of the bucket, causing marine pollution. was there.

このため、工事区域を囲むように海面及び海中に汚濁防止幕を張り合わせ、区域外に汚泥や汚水が流出しないようにしているが、潮の干満や潮流により、完璧とは言えない。   For this reason, pollution prevention curtains are put on the sea surface and in the sea so as to surround the construction area so that sludge and sewage do not flow out of the area, but it is not perfect due to tides and tides.

この対策として、本願出願人は、下記特許文献１において、左右バケットの開口面以外の部分を密閉構造とし、左右バケットの開口面の上部の合わせ部にシール用パッキンを取り付け、左右バケットに空気抜き口とこの空気抜き口を開閉する空気抜き扉を設けた浚渫用クラムシェルバケットを開示した。   As a countermeasure against this, the applicant of the present invention described in Patent Document 1 below has a sealed structure in portions other than the opening surfaces of the left and right buckets, and a seal packing is attached to the upper portion of the opening surfaces of the left and right buckets. And the clamshell bucket for a cage provided with the air vent door which opens and closes this air vent is disclosed.

このクラムシェルバケットにより汚泥や汚水の漏れをかなり軽減することができるが、左右バケットの開口面の合わせ部から汚泥や汚水が漏れるのを完全に防止することはできず、完全に水密するには至らなかった。
特開２０００−３２８５９４号公報 This clamshell bucket can significantly reduce the leakage of sludge and sewage, but it cannot completely prevent the sludge and sewage from leaking from the joints of the opening surfaces of the left and right buckets. It did not come.
JP 2000-328594 A

本発明が解決しようとする課題は、左右バケットの開口面の合わせ部から汚泥や汚水が漏れるのを完全に防止することができる浚渫用クラムシェルバケットを提供することにある。   The problem to be solved by the present invention is to provide a dredging clamshell bucket that can completely prevent sludge and sewage from leaking from the mating portion of the opening surfaces of the left and right buckets.

本発明は、クレーンからの吊りワイヤによって吊り下げられる機体に上端を軸止された左右アームの下端部の支軸の回りに回動自在に右バケットと左バケットとを設け、これらの左右バケットの開口面の内側端縁同士を枢軸で結合すると共に、その枢軸を前記クレーンの開閉用ワイヤで昇降操作することによって、左右バケットを開閉及び移動させて海底の土砂を浚渫する浚渫用クラムシェルバケットにおいて、前記左右バケットの前記開口面以外の部分を密閉構造とし、左右バケットの開口面の上部の合わせ部にシール用パッキンを取り付け、左右バケットの背中の面で且つ前記支軸部近傍に、空気抜き口とこの空気抜き口を開閉する板状の空気抜き扉を設け、この空気抜き扉は上端を水平な軸に回動自在に軸支され、左右バケットが開いているときは前記空気抜き扉が自重により垂下して前記空気抜き口を開放するほぼ垂直の位置にあり、左右バケットが閉じたときは前記空気抜き扉が左右バケットの背中の面に押し上げられて前記空気抜き口を閉塞する位置にあるように前記空気抜き扉を構成し、さらに、左右バケットの開口面の合わせ部を研削加工し、左右バケットが閉じたときに左右バケットの開口面の合わせ部が水密となるようにしたことを特徴とする。   The present invention provides a right bucket and a left bucket so as to be rotatable about a support shaft at a lower end portion of a left and right arm whose upper end is fixed to a machine body suspended by a suspension wire from a crane. In the clamshell bucket for dredging where the inner edges of the opening surfaces are coupled with each other by pivots, and the pivots are lifted and lowered by the crane opening and closing wires to open and close the left and right buckets and dredge the sediment on the seabed. The left and right buckets other than the opening surface have a sealed structure, a seal packing is attached to the upper portion of the left and right bucket opening surfaces, and the air vents are provided on the back surfaces of the left and right buckets and in the vicinity of the support shaft portion. And a plate-like air vent door that opens and closes the air vent, and the air vent door is pivotally supported on a horizontal axis so that the left and right buckets are open. The air vent door is in a substantially vertical position where the air vent door hangs down due to its own weight and opens the air vent port.When the left and right buckets are closed, the air vent door is pushed up to the back surface of the left and right buckets to open the air vent port. Configure the air vent door so that it is in the closed position, and grind the mating part of the opening surface of the left and right buckets so that the mating part of the opening surface of the left and right buckets becomes watertight when the left and right buckets are closed It is characterized by that.

本発明は、下記の効果を奏する。   The present invention has the following effects.

（１）左右バケットの開口面以外の部分を密閉構造とし、左右バケットの開口面の上部の合わせ部にシール用パッキンを取り付けるとともに、左右バケットの開口面の合わせ部を研削加工し、左右バケットが閉じたときに左右バケットの開口面の合わせ部が水密となるようにしたことにより、一旦バケットですくい上げた汚泥や汚水を海中に落下させたりこぼしたりすることがなく、海の汚濁化や生態系への悪影響などの環境汚染を引き起こすことがない。 (1) The parts other than the opening surfaces of the left and right buckets are hermetically sealed, and a seal packing is attached to the upper portion of the opening surfaces of the left and right buckets. By making the joints of the opening surfaces of the left and right buckets watertight when closed, the sludge and sewage that has been scooped up once in the bucket will not fall or spill into the sea. Does not cause environmental pollution such as adverse effects on the environment.

（２）左右バケットに、空気抜き口とこの空気抜き口を自動開閉する空気抜き扉を設けたことにより、バケットに溜まった空気による浮力によってバケットの落下地点が狂ったりバケットから溢れ出た空気が汚泥を巻き上げることによる汚濁化を解消することができる。 (2) By providing air vents and air vent doors that automatically open and close the air vents on the left and right buckets, the buoyancy caused by the air that has accumulated in the buckets causes the bucket to fall out of place or the air that overflows from the buckets winds up sludge It is possible to eliminate the pollution caused by this.

（３）上記により、従来のような汚濁防止幕を張る必要がなくなり、工期短縮、労力削減を図ることができる。 (3) Due to the above, it is not necessary to put a conventional pollution prevention curtain, and the construction period and labor can be reduced.

以下、本発明の実施の形態を、図面に示す実施例を参照しながら具体的に説明する。   Hereinafter, embodiments of the present invention will be specifically described with reference to the examples shown in the drawings.

図１〜図３は本発明の実施例を示すもので、図１はバケットを閉じた状態の正面図、図２はその側面図、図３はバケットを開いた状態の正面図である。   1 to 3 show an embodiment of the present invention. FIG. 1 is a front view of a state in which a bucket is closed, FIG. 2 is a side view thereof, and FIG. 3 is a front view of a state in which the bucket is opened.

これらの図において、１は機体、２及び３は機体１に上端を軸止された左アーム及び右アーム、４及び５は左右アーム２、３の下端部の支軸６、７の回りに回動自在に設けられた左バケット及び右バケット、８は左右のバケット４、５の開口面の内側端縁同士を結合した枢軸、９は枢軸８を昇降駆動するための滑車機構、１０はクレーンからの吊りワイヤ、１１は同じくクレーンからの開閉用ワイヤである。   In these drawings, 1 is the airframe, 2 and 3 are the left and right arms pivoted at the upper end of the airframe 1, and 4 and 5 are rotated around the support shafts 6 and 7 at the lower ends of the left and right arms 2 and 3. Left and right buckets provided movably, 8 is a pivot connecting the inner edges of the opening surfaces of the left and right buckets 4 and 5, 9 is a pulley mechanism for driving the pivot 8 up and down, and 10 is a crane. No. 11 is a wire for opening and closing from the crane.

本実施例では、クラムシェルの左右のバケット４、５を完全に箱形にして一面（開口面）だけで接地させるようにした。そして、バケット４、５の開口面の上部の合わせ部には、Ｄ型ゴム（シール用パッキン）１２を設け、バケット４、５の開閉により圧縮させて密閉するようにした。また、バケット４、５の左と右の背中の面に大きな空気抜き口１３と空気抜き扉１４を設置した。空気抜き扉１４は、実施例では板状であり、上端を水平な軸によって回動自在に構成されている。   In this embodiment, the left and right buckets 4 and 5 of the clam shell are completely box-shaped and are grounded only on one surface (opening surface). A D-type rubber (seal packing) 12 was provided at the upper portion of the opening surface of the buckets 4 and 5, and was compressed by opening and closing the buckets 4 and 5 to be sealed. Also, large air vents 13 and air vent doors 14 were installed on the left and right back surfaces of the buckets 4 and 5. The air vent door 14 has a plate shape in the embodiment, and is configured such that the upper end thereof is freely rotatable about a horizontal axis.

さらに、本実施例では、左右のバケット４、５の開口面の合わせ部を研削加工し、左右のバケット４、５が閉じたときに左右のバケット４、５の開口面の合わせ部が水密となるようにした。   Furthermore, in this embodiment, the mating portions of the opening surfaces of the left and right buckets 4 and 5 are ground, and when the left and right buckets 4 and 5 are closed, the mating portions of the opening surfaces of the left and right buckets 4 and 5 are watertight. It was made to become.

具体的には以下の手順で左右のバケット４、５の開口面を研削加工した。   Specifically, the opening surfaces of the left and right buckets 4 and 5 were ground by the following procedure.

（１）クラムシェルバケットをクレーンで吊り上げた状態で、左右のバケット４、５の開口面の合わせ部（刃口）間に隙間ゲージ押し入れ、刃口間の隙間厚を確認する。 (1) In a state where the clamshell bucket is lifted by a crane, a gap gauge is pushed in between the matching portions (blade edges) of the opening surfaces of the left and right buckets 4 and 5, and the gap thickness between the blade edges is confirmed.

（２）左右のバケット４、５を吊り上げバケット４、５の刃口を３０度に開ける。そして、左バケット４の刃口に光明丹を刷毛で塗り、再度バケット４、５を吊り上げてバケット４、５の刃口を合わせて、刃口間の隙間を計測する。さらにバケット４、５を吊り上げ３０度に開けて、右バケット５の刃口で光明丹の付着しているところを重点的にディスクサンダー荒目で削りとる。 (2) Lift the left and right buckets 4 and 5 and open the blades of the buckets 4 and 5 at 30 degrees. Then, Komichitan is applied to the blade edge of the left bucket 4 with a brush, the buckets 4 and 5 are lifted again, the blade edges of the buckets 4 and 5 are aligned, and the gap between the blade edges is measured. Furthermore, the buckets 4 and 5 are lifted and opened at 30 degrees, and the place where the light attenuator is attached at the blade edge of the right bucket 5 is sharply scraped off with a disc sander rough.

（３）再度左バケット４の刃口に光明丹を刷毛で塗る。再度バケット４、５を吊り上げて刃口間の隙間を計測した後、バケット４、５の刃口を３０度に開いて、右バケット５の開口面で光明丹の付着しているところを削りとる。開口面間の隙間が０．１ｍｍになったら、ディスクサンダー細目のサンダーで削り、擦り合わせる。 (3) Apply Komyotan to the blade edge of the left bucket 4 again with a brush. After lifting the buckets 4 and 5 again and measuring the gap between the blade edges, open the blade edges of the buckets 4 and 5 at 30 degrees, and scrape off the place where the light attenuator is attached on the opening surface of the right bucket 5. . When the gap between the opening faces becomes 0.1 mm, scrape and rub with a fine sander.

（４）左右のバケット４、５の刃口をきれいにふき取り、バケットの中に作業員が入り刃口を閉鎖する。外側から刃口に向けて強い光を当て、光が見えなくなるまで擦り合わせを行う。 (4) The blade edges of the left and right buckets 4 and 5 are wiped clean, and an operator enters the bucket and closes the blade edges. Apply strong light from the outside toward the blade edge, and rub until no more light is visible.

この実施例によれば、図３に示すように、左右のバケット４、５を開いた状態で吊りワイヤ１０を操作して海中にバケット４、５を落下させると、バケット４、５の底部（落下中は上部）に設けられている空気抜き扉１４はほぼ垂直の位置にあって空気抜き口１３を開放しており、バケット４、５の底部の空気は海中を落下中に完全に抜かれる。バケット４、５が海底に達すると、開閉用ワイヤ１１を操作することによりバケット４、５の刃先が汚泥をすくい取り、バケット４、５が閉じると、Ｄ型ゴム１２がバケット４、５の開口面の上部の合わせ部を完全にシールするとともに、開口面の合わせ部は完全に面合して水密となっている。さらに、図１に示すように空気抜き扉１４も空気抜き口１３を閉塞してバケット４、５は完全に密封状態となる。   According to this embodiment, as shown in FIG. 3, when the buckets 4 and 5 are dropped into the sea by operating the suspension wire 10 with the left and right buckets 4 and 5 being opened, The air vent door 14 provided in the upper part during the fall is in a substantially vertical position and opens the air vent 13, and the air at the bottom of the buckets 4, 5 is completely extracted during the fall. When the buckets 4 and 5 reach the seabed, the cutting edges of the buckets 4 and 5 scoop up sludge by operating the wire 11 for opening and closing. When the buckets 4 and 5 close, the D-type rubber 12 opens the buckets 4 and 5. The mating portion at the top of the surface is completely sealed, and the mating portion of the opening surface is completely mated and watertight. Further, as shown in FIG. 1, the air vent door 14 also closes the air vent port 13 and the buckets 4 and 5 are completely sealed.

この状態で吊りワイヤ１０を操作してバケット４、５を吊り上げると、バケット４、５の中から汚泥は外に出ない。そして、そのまま海上に引き上げ、土運船上でバケット４、５を開くことにより、汚泥は土運船に運び込まれることになる。   When the suspension wire 10 is operated in this state to lift the buckets 4 and 5, sludge does not go out of the buckets 4 and 5. And it raises to the sea as it is, and by opening the buckets 4 and 5 on a clay ship, sludge will be carried into a clay ship.

本発明実施例におけるバケットを閉じた状態の正面図である。It is a front view of the state which closed the bucket in the example of the present invention. 本発明実施例におけるバケットを閉じた状態の側面図である。It is a side view of the state which closed the bucket in the example of the present invention. 本発明実施例におけるバケットを開いた状態の正面図である。It is a front view of the state which opened the bucket in this invention Example.

符号の説明Explanation of symbols

１ 機体
２ 左アーム
３ 右アーム
４ 左バケット
５ 右バケット
６、７ 支軸
８ 枢軸
９ 滑車機構
１０ 吊りワイヤ
１１ 開閉用ワイヤ
１２ Ｄ型ゴム（シール用パッキン）
１３ 空気抜き口
１４ 空気抜き扉 DESCRIPTION OF SYMBOLS 1 Airframe 2 Left arm 3 Right arm 4 Left bucket 5 Right bucket 6, 7 Support shaft 8 Axis 9 Pulley mechanism 10 Suspension wire 11 Opening / closing wire 12 D type rubber (packing for seal)
13 Air vent 14 Air vent door

Claims (1)

クレーンからの吊りワイヤによって吊り下げられる機体に上端を軸止された左右アームの下端部の支軸の回りに回動自在に右バケットと左バケットとを設け、これらの左右バケットの開口面の内側端縁同士を枢軸で結合すると共に、その枢軸を前記クレーンの開閉用ワイヤで昇降操作することによって、左右バケットを開閉及び移動させて海底の土砂を浚渫する浚渫用クラムシェルバケットにおいて、
前記左右バケットの前記開口面以外の部分を密閉構造とし、左右バケットの開口面の上部の合わせ部にシール用パッキンを取り付け、左右バケットの背中の面で且つ前記支軸部近傍に、空気抜き口とこの空気抜き口を開閉する板状の空気抜き扉を設け、この空気抜き扉は上端を水平な軸に回動自在に軸支され、左右バケットが開いているときは前記空気抜き扉が自重により垂下して前記空気抜き口を開放するほぼ垂直の位置にあり、左右バケットが閉じたときは前記空気抜き扉が左右バケットの背中の面に押し上げられて前記空気抜き口を閉塞する位置にあるように前記空気抜き扉を構成し、
さらに、左右バケットの開口面を研削加工し、左右バケットが閉じたときに左右バケットの開口面の合わせ部が水密となるようにしたことを特徴とする浚渫用クラムシェルバケット。 A right bucket and a left bucket are provided so as to be rotatable around the support shaft at the lower end of the left and right arms pivoted at the upper end of the machine body suspended by the suspension wire from the crane, and inside the opening surfaces of these left and right buckets In the clamshell bucket for dredging where the edges are coupled with pivots, and the pivots are lifted and lowered with the crane opening and closing wires to open and close the left and right buckets and dredge the sediment on the seabed,
The left and right buckets other than the opening surfaces have a sealed structure, and a seal packing is attached to the upper portion of the opening surfaces of the left and right buckets, on the back surfaces of the left and right buckets and in the vicinity of the support shaft portion, A plate-like air vent door that opens and closes the air vent opening is provided, and the air vent door is pivotally supported with its upper end pivotable on a horizontal shaft, and when the left and right buckets are open, the air vent door hangs down due to its own weight. The air vent door is configured so that the air vent door is in a substantially vertical position for opening the air vent opening, and when the left and right buckets are closed, the air vent door is pushed up on the back surface of the left and right buckets to close the air vent opening. ,
Furthermore, the clamshell bucket for a bag characterized by grinding the opening surfaces of the left and right buckets so that when the left and right buckets are closed, the mating portion of the opening surfaces of the left and right buckets is watertight.
JP2004156739A 2004-05-26 2004-05-26 Clamshell bucket for firewood Expired - Lifetime JP4523334B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4472012B1 (en) * 2009-01-07 2010-06-02 株式会社繁栄工業 Excavator and dredging construction method
CN101858092A (en) * 2010-06-18 2010-10-13 北京市三一重机有限公司 Diaphram wall grab bucket and grab bucket device thereof
KR101084310B1 (en) 2010-12-30 2011-11-16 (주)해양연구개발 A tighting bucket unit for a fishing ground purification and dredging
EP2484837A1 (en) * 2011-02-07 2012-08-08 Soletanche Freyssinet Grapple provided with a bucket comprising a shutter
JP2019120087A (en) * 2018-01-10 2019-07-22 日立建機株式会社 Clamshell bucket

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CN109160261B (en) * 2018-06-27 2020-05-08 安徽科创新能源科技有限责任公司 Special transportation equipment of glass ball

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JPH0346423U (en) * 1989-09-13 1991-04-30
JPH0676788U (en) * 1993-04-05 1994-10-28 株式会社エスメック Stainless steel pipe fittings
JP2000328594A (en) * 1999-05-24 2000-11-28 Fukumaru Kensetsu Kk Clamshell bucket for dredging
JP2003119829A (en) * 2001-10-16 2003-04-23 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Counterweight of construction machine

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JPH0346423U (en) * 1989-09-13 1991-04-30
JPH0676788U (en) * 1993-04-05 1994-10-28 株式会社エスメック Stainless steel pipe fittings
JP2000328594A (en) * 1999-05-24 2000-11-28 Fukumaru Kensetsu Kk Clamshell bucket for dredging
JP2003119829A (en) * 2001-10-16 2003-04-23 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Counterweight of construction machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4472012B1 (en) * 2009-01-07 2010-06-02 株式会社繁栄工業 Excavator and dredging construction method
JP2010159558A (en) * 2009-01-07 2010-07-22 Hanei Kogyo:Kk Power shovel and dredging construction method
CN101858092A (en) * 2010-06-18 2010-10-13 北京市三一重机有限公司 Diaphram wall grab bucket and grab bucket device thereof
CN101858092B (en) * 2010-06-18 2012-05-23 北京市三一重机有限公司 Diaphram wall grab bucket and grab bucket device thereof
KR101084310B1 (en) 2010-12-30 2011-11-16 (주)해양연구개발 A tighting bucket unit for a fishing ground purification and dredging
EP2484837A1 (en) * 2011-02-07 2012-08-08 Soletanche Freyssinet Grapple provided with a bucket comprising a shutter
FR2971274A1 (en) * 2011-02-07 2012-08-10 Soletanche Freyssinet BUCKET BUCKET HAVING A SHUTTER
JP2019120087A (en) * 2018-01-10 2019-07-22 日立建機株式会社 Clamshell bucket

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