JP2016107696A

JP2016107696A - Under-water cutter system

Info

Publication number: JP2016107696A
Application number: JP2014244786A
Authority: JP
Inventors: 小山　正人; Masato Koyama; 正人小山; 加藤　洋一; Yoichi Kato; 洋一加藤; 早瀬　学; Manabu Hayase; 学早瀬; 幸也副島; Yukiya Soejima
Original assignee: KURITA SAKUGANKI KK; Hazama Ando Corp
Current assignee: KURITA SAKUGANKI KK; Hazama Ando Corp
Priority date: 2014-12-03
Filing date: 2014-12-03
Publication date: 2016-06-20
Anticipated expiration: 2034-12-03
Also published as: JP6522937B2

Abstract

PROBLEM TO BE SOLVED: To provide an under-water cutter system capable of eliminating requirement of a diver's cutting work on a wall of an under-water concrete structure to considerably reduce man-power work.SOLUTION: An under-water cutter system S1 comprises: an under water cutter M1 including an air drive type under-water cutter 1 to cut a wall of a concrete structure underwater and a propeller type thrust generator 2 connected to a rear part of the cutter 1 through an attachment base 3 to generate thrust underwater; a high pressure air supply device 4 to supply high pressure air to the cutter 1; and a controller 5 combined with an inverter 6 to control the thrust generator 2.SELECTED DRAWING: Figure 2

Description

本発明は、水中でコンクリート構造物の壁面を切削するのに使用する水中切削機システムに関する。 The present invention relates to an underwater cutting machine system used for cutting a wall surface of a concrete structure in water.

一般に、ダム堤体の水面下の壁面を切削する場合など水中で既設のコンクリート構造物の壁面を切削する場合、ダイバー（潜水士）などが水中に潜り、ピックハンマーやチッパーなどの切削工具を使って壁面のハツリ・チッピングを行っている（特許文献１段落０００２参照）。
また、人力による水中作業でハツリ処理が困難又は不可能な場合は、ダム湖の水位を人為的に低下させて、又は施工箇所に仮締切りを設置して水を抜き、気中の状態にして、ハツリ作業を行っている（仮締切りについて特許文献１参照）。 In general, when cutting the wall surface of an existing concrete structure in the water, such as when cutting the wall surface under the water surface of a dam body, a diver or the like dives into the water and uses a cutting tool such as a pick hammer or chipper. The wall surface is chipped and chipped (see Patent Document 1, paragraph 0002).
In addition, when it is difficult or impossible to perform a chipping process underwater work by human power, artificially lower the water level of the dam lake or install a temporary deadline at the construction site to drain the water and bring it into the air. The chipping operation is performed (refer to Patent Document 1 for provisional cut-off).

特開２０１４−１３４０５７号公報JP 2014-134057 A

しかしながら、従来の水中でのコンクリート構造物の壁面の切削作業においては、次のような問題がある。
（１）ダイバーなどによる水中でのコンクリート構造物の切削施工では、人力による水中作業のため、安全上の問題があり、また、ダイバー（潜水士）などが水中に潜り、切削工具を使って壁面のハツリ・チッピングを行うので、作業効率が悪く、工期、工費が増大する。この場合、水深が深く明るさが低下したり、浮遊物質などにより濁度が増大してダイバーの水中での視界が悪くなったりすると、ダイバーなどの安全性や作業効率はさらに低下する。特に、水深が深い（３０ｍを超える）場合は、高気圧則によりダイバーの実質作業時間が短時間に制限されるため、作業効率は著しく低下する。
（２）ダム湖の水位を低下させてのハツリ作業は、ダム湖の水位低下が、主目的の治水や発電量に大きな影響を及ぼすことになり、仮締切りを設置してのハツリ作業は、仮締切りそれ自体の構築に、多大な費用と工期がかかるという重大な問題がある。
（３）その他、水中で壁面のハツリ・チッピングに使用する工具に油圧式の機械を使用すると、機械の破損時の油の漏洩による環境汚染が懸念されるため、工具はエアー式の機械が好ましいが、エアー式の機械の場合、水中での作業位置でこの機械から発生する排気（気泡）が、水圧の圧縮により、水圧倍の堆積となるために、エアーの消費が特に大きい機械の場合、大量のエアーが消費排出され、水中作業位置からの濁水拡散が懸念される。さらに、エアーの消費が特に大きい機械（例えば、ダウンザホールハンマー、ジャイアントブレーカーなど）では、機器それ自体の大きさ、重量が増大し、また、エアー供給用の配管の径が大きく、地上設備も著しく大きくなるため、実用性の点で問題がある。 However, in the conventional cutting work of the wall surface of a concrete structure in water, there are the following problems.
(1) When cutting concrete structures underwater with a diver, etc., there are safety issues due to underwater work by human power, and divers (submersibles) dive into the water and use cutting tools to Since chipping and chipping are performed, the work efficiency is poor, and the construction period and construction cost increase. In this case, when the water depth is deep and the brightness is reduced, or the turbidity increases due to suspended substances or the like, and the diver's visibility in water deteriorates, the safety and work efficiency of the diver further decrease. In particular, when the water depth is deep (over 30 m), the working efficiency of the diver is significantly reduced because the actual working time of the diver is limited to a short time by the law of high atmospheric pressure.
(2) Deburring work by lowering the water level in the dam lake is because the lowering of the water level in the dam lake has a large impact on the main purpose flood control and power generation. There is a serious problem that the construction of the temporary deadline itself takes a great deal of cost and construction period.
(3) In addition, when a hydraulic machine is used as a tool for chipping and chipping of the wall surface in water, there is a concern about environmental pollution due to oil leakage when the machine is broken. However, in the case of an air-type machine, the exhaust (bubbles) generated from this machine at the working position in water becomes a double of the water pressure due to the compression of the water pressure. A large amount of air is consumed and discharged, and there is a concern about the diffusion of muddy water from the underwater work position. In addition, in machines where air consumption is particularly large (for example, down-the-hole hammers, giant breakers, etc.), the size and weight of the equipment itself increases, the diameter of the air supply piping is large, and the ground facilities are also extremely large. Therefore, there is a problem in terms of practicality.

本発明は、このような従来の課題を解決するもので、この種の水中でのコンクリート構造物の壁面の切削作業において、水中のコンクリート構造物に反力を取るためのレールや架台を設置することがないなど水中に固定することなしに使用でき、また、全体の大きさ、重量が小さく取扱いが安全かつ容易で、操作性に優れ、しかも、濁水の発生、拡散を抑制し、機械破損時でも環境汚染を防止でき、さらに、地上設備もコンパクトに設置できるようにして、水中での切削作業を、ダイバーを不要とし人力作業を大幅に低減して、水中の作業環境（深度、視界など）に影響されることなしに、安全かつ効率よく実施することのできる水中切削機システムを提供すること、を目的とする。 The present invention solves such a conventional problem, and in this kind of underwater concrete structure wall surface cutting work, a rail and a stand are provided for taking a reaction force against the underwater concrete structure. It can be used without being fixed in water, and its overall size and weight are small, safe and easy to handle, excellent in operability, and suppresses the generation and diffusion of muddy water. However, environmental pollution can be prevented, and ground equipment can be installed in a compact manner. Underwater work environment (depth, field of view, etc.) is greatly reduced by eliminating divers and reducing human labor. It is an object of the present invention to provide an underwater cutting machine system that can be safely and efficiently implemented without being affected by the above.

上記目的を達成するために、本発明は、
水中でコンクリート構造物の壁面を切削するのに使用する水中切削機システムであって、
（イ）水中設備として、前部に切削ビットを具備し、後部に給気部、排気部を有し、高圧のエアーを動力源として前記切削ビットを駆動する駆動部を具備し、水中でコンクリート構造物の壁面を切削するためのエアー駆動式の切削機、及び前記切削機の前記給気部、前記排気部に連結される給気管、排気管と、前記切削機の後方に取付ベースを介して連結配置され、後部にプロペラを具備し、前部に電気を駆動源とし、前記プロペラの回転駆動する駆動部を具備し、水中で推力を発生させるためのプロペラ式の推力発生機とからなる水中切削機と、
（ロ）地上設備として、前記エアー駆動式の切削機の前記給気部に前記給気管を介して接続され、前記切削機に高圧のエアーを供給する高圧エアー供給装置、及び前記プロペラ式の推力発生機に配線により電気的に接続され、前記推力発生機を制御するインバータを組み合わせたコントローラと、
を備え、
（ハ）前記水中切削機を揚重機械により吊り下げて、水中に置き、
前記排気管は前記水中切削機から水上に導出して排気を大気中に放出可能な状態とし、
前記揚重機械の誘導操作により前記水中切削機を水中で移動して、前記切削機の前記切削ビットをコンクリート構造物の壁面に向けて対向させ、
前記地上設備の前記インバータを組み合わせた前記コントローラにより前記推力発生機の推力を調整して前記切削機の前記切削ビットをコンクリート構造物の壁面に押し当てながら、前記高圧エアー供給装置により前記切削機を駆動して、前記切削ビットで当該壁面を切削する、
ことを要旨とする。
また、この水中切削機システムは、次のように具体化されることが好ましい。
（１）エアー駆動式の切削機は、切削ビットとして複数のビットと、駆動部として前記各ビットを前後方向に往復駆動するエアー駆動式のシリンダとを具備し、コンクリート構造物の壁面を数センチメートル程度までハツリ可能なスパイキーハンマーが採用される。
（２）プロペラ式の推力発生機は、プロペラとして撹拌羽根と、駆動部として電動モータとを具備し、前記撹拌羽根が前記電動モータの出力軸に直結されて、水中に水流を発生し撹拌する形式の水中攪拌ポンプが採用される。
（３）取付ベースに、切削機上で前後方向に向けて延び、揚重機械に吊り治具を介して係合可能な連結部を有する。
（４）取付ベースに、切削機上で前後方向に向けて進退可能に設けられ、コンクリート構造物の壁面に当接して前記切削機をコンクリート構造物の壁面に対して位置決めするためのガイドを有する。
（５）取付ベースは、前後に延びる水平プレートと、前記水平プレートの下面の前端又は前端側に略垂直に連接される垂直プレートとを有し、１台の切削機が切削ビットを前方に向けて前記垂直プレートの前面に取り付けられ、１台の推力発生機がプロペラを後方に向けて前記水平プレートの下面後部に取り付けられる。
（６）取付ベースは、前後に延びる水平プレートと、前記水平プレートの下面の前端又は前端側に略垂直に連接される垂直プレートとを有し、前記水平プレートは後部側の両側部が両側方に向けて突出する拡張部が設けられて、１台の切削機が切削ビットを前方に向けて前記垂直プレートの前面に取り付けられ、２台の推力発生機がそれぞれプロペラを後方に向けて前記水平プレートの下面後部と前記各拡張部との間で前記各推力発生機の取付位置を調整可能に取り付けられる。
（７）取付ベースは、上面に水平のフラット面を有し、前面、後面に開口を有する左右対称の枠状のフレームと、前記枠状のフレームの前面開口に設けられる前部プレートとを有し、１台の切削機が切削ビットを前方に向けて前記前部プレートに取り付けられ、４台の推力発生機がそれぞれプロペラを後方に向けて前記枠状のフレームの外周面に左右対称に取り付けられる。
（８）水中切削機の付属ユニットとして、前記水中切削機の取付ベースに係合し前記水中切削機を支持可能な架台を併せて備える。 In order to achieve the above object, the present invention provides:
An underwater cutting machine system used to cut the wall of a concrete structure in water,
(B) As an underwater facility, a cutting bit is provided at the front part, an air supply part and an exhaust part are provided at the rear part, and a driving part that drives the cutting bit using high-pressure air as a power source is provided. An air-driven cutting machine for cutting the wall surface of the structure, the air supply section of the cutting machine, an air supply pipe connected to the exhaust section, an exhaust pipe, and a mounting base behind the cutting machine A propeller-type thrust generator for generating thrust in water, including a propeller at the rear, a drive unit for rotating the propeller, and a propeller at the rear. Underwater cutting machine,
(B) A high-pressure air supply device connected to the air supply section of the air-driven cutting machine as the ground equipment via the air supply pipe and supplying high-pressure air to the cutting machine, and the propeller type thrust A controller combined with an inverter electrically connected to the generator by wiring and controlling the thrust generator;
With
(C) The underwater cutting machine is suspended by a lifting machine and placed in water.
The exhaust pipe is led to the water from the underwater cutting machine to be in a state where the exhaust can be released into the atmosphere,
The underwater cutting machine is moved underwater by a guidance operation of the lifting machine, and the cutting bit of the cutting machine is opposed to the wall surface of the concrete structure,
While adjusting the thrust of the thrust generator by the controller combined with the inverter of the ground equipment and pressing the cutting bit of the cutting machine against the wall surface of the concrete structure, the cutting machine is controlled by the high-pressure air supply device. Drive and cut the wall surface with the cutting bit,
This is the gist.
The underwater cutting machine system is preferably embodied as follows.
(1) The air-driven cutting machine includes a plurality of bits as cutting bits and an air-driven cylinder that reciprocally drives each bit in the front-rear direction as a driving unit, and the wall surface of the concrete structure is several centimeters. A spy hammer that can be chopped up to about a meter is used.
(2) The propeller type thrust generator includes a stirring blade as a propeller and an electric motor as a drive unit, and the stirring blade is directly connected to the output shaft of the electric motor to generate a water flow in the water and stir it. A type of submerged agitation pump is used.
(3) The attachment base has a connecting portion that extends in the front-rear direction on the cutting machine and that can be engaged with the lifting machine via a lifting jig.
(4) The mounting base is provided so as to be able to advance and retreat in the front-rear direction on the cutting machine, and has a guide for contacting the wall surface of the concrete structure and positioning the cutting machine with respect to the wall surface of the concrete structure. .
(5) The mounting base has a horizontal plate extending in the front-rear direction and a vertical plate connected substantially vertically to the front end or front end side of the lower surface of the horizontal plate, and one cutting machine directs the cutting bit forward. Attached to the front surface of the vertical plate, and one thrust generator is attached to the lower rear portion of the horizontal plate with the propeller facing rearward.
(6) The mounting base includes a horizontal plate extending in the front-rear direction and a vertical plate connected substantially vertically to the front end or front end side of the lower surface of the horizontal plate, and the horizontal plate has both sides on the rear side on both sides. An extension projecting toward the surface, one cutting machine is attached to the front surface of the vertical plate with the cutting bit facing forward, and two thrust generators respectively facing the horizontal with the propeller facing backward It is attached so that the attachment position of each said thrust generator can be adjusted between the lower surface rear part of a plate, and each said expansion part.
(7) The mounting base has a horizontally symmetric frame-like frame having a horizontal flat surface on the upper surface and openings on the front and rear surfaces, and a front plate provided in the front opening of the frame-shaped frame. One cutting machine is mounted on the front plate with the cutting bit facing forward, and four thrust generators are mounted symmetrically on the outer peripheral surface of the frame-shaped frame with the propeller facing rearward. It is done.
(8) As an attachment unit of the underwater cutting machine, a base that can engage with the mounting base of the underwater cutting machine and support the underwater cutting machine is also provided.

本発明の水中切削機システムは、水中設備として、エアー駆動式の切削機及びプロペラ式の推力発生器からなる水中切削機と、地上設備として、高圧エアー供給装置及びインバータを組み合わせたコントローラとを備え、水中切削機を揚重機械により吊り下げて、水中に置き、水中切削機の排気管は水上に導出して排気を大気中に放出可能な状態とし、揚重機械の誘導操作により水中切削機を水中で移動して、切削機の切削ビットをコンクリート構造物の壁面に向けて対向させ、地上設備のインバータを組み合わせたコントローラにより推力発生機の推力を調整して切削機の切削ビットをコンクリート構造物の壁面に押し当てながら、高圧エアー供給装置により切削機を駆動して、切削ビットで当該壁面を切削するようにしたので、次のような本発明独自の格別な効果を奏する。
（１）水中のコンクリート構造物に反力を取るためのレールや架台を設置する必要がなく、水中に固定することなしに使用することができる。
（２）水中切削機全体の大きさ、重量を小さくして取扱いを安全かつ容易にし、優れた操作性を実現することができる。
（３）濁水の発生、拡散を抑制し、機械破損時でも環境汚染を防止することができる。
（４）地上設備をコンパクトに設置することができる。
（５）水中での切削作業を、ダイバーを不要とし人力作業を大幅に低減して、水中の作業環境（深度、視界など）に影響されることなしに、安全かつ効率よく実施することができる。 The underwater cutting machine system of the present invention includes an underwater cutting machine including an air-driven cutting machine and a propeller type thrust generator as underwater equipment, and a controller that combines a high-pressure air supply device and an inverter as ground equipment. The underwater cutting machine is suspended by a lifting machine and placed in the water, and the exhaust pipe of the underwater cutting machine is led out to the water so that the exhaust can be released to the atmosphere. The cutting bit of the cutting machine is made to face the wall of the concrete structure, and the thrust of the thrust generator is adjusted by the controller combined with the inverter of the ground equipment to make the cutting bit of the cutting machine into the concrete structure. While pressing against the wall surface of the object, the cutting machine was driven by the high-pressure air supply device and the wall surface was cut with a cutting bit. Achieve the present invention own special effects.
(1) It is not necessary to install a rail or a base for taking a reaction force on an underwater concrete structure, and it can be used without being fixed in water.
(2) The overall size and weight of the underwater cutting machine can be reduced to make the handling safe and easy, and excellent operability can be realized.
(3) The generation and diffusion of muddy water can be suppressed, and environmental pollution can be prevented even when the machine is damaged.
(4) The ground equipment can be installed compactly.
(5) It is possible to perform underwater cutting work safely and efficiently without being affected by the underwater work environment (depth, field of view, etc.) by eliminating the need for divers and significantly reducing manpower work. .

本発明の第１の実施の形態による水中切削機システムの構成を示す図（（ａ）は平面図（ｂ）は側面図（ｃ）は背面図）The figure which shows the structure of the underwater cutting machine system by the 1st Embodiment of this invention ((a) is a top view (b) is a side view (c) is a rear view) 同システムの使用例を示す図Diagram showing usage example of the system 本発明の第２の実施の形態による水中切削機システムの構成を示す図（（ａ）は平面図（ｂ）は側面図（ｃ）は背面図）The figure which shows the structure of the underwater cutting machine system by the 2nd Embodiment of this invention ((a) is a top view (b) is a side view (c) is a rear view) 本発明の第３の実施の形態による水中切削機システムの構成を示す図（（ａ）は平面図（ｂ）は側面図（ｃ）は背面図）The figure which shows the structure of the underwater cutting machine system by the 3rd Embodiment of this invention ((a) is a top view (b) is a side view (c) is a rear view)

次に、この発明の実施の形態について図を用いて説明する。
図１に第１の実施の形態を示している。
図１に示すように、この水中切削機システムＳ１は、ダム堤体の水面下の壁面を切削する場合など水中でコンクリート構造物の壁面を切削するのに使用するもので、水中設備として、水中でコンクリート構造物の壁面を切削するためのエアー駆動式の切削機１と、切削機１の後方に取付ベース３Ａを介して連結配置され、水中で推力を発生させるためのプロペラ式の推力発生機２とからなる水中切削機Ｍ１と、地上設備として、切削機１に高圧のエアーを供給する高圧エアー供給装置４、及び推力発生機２を制御するインバータ６を組み合わせたコントローラ５とを備えて構成される。 Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a first embodiment.
As shown in FIG. 1, this underwater cutting machine system S1 is used to cut the wall surface of a concrete structure underwater, such as when cutting the wall surface below the water surface of a dam dam body. An air-driven cutting machine 1 for cutting the wall surface of a concrete structure, and a propeller type thrust generator for generating thrust in the water connected to the rear of the cutting machine 1 via a mounting base 3A And an underwater cutting machine M1 composed of 2 and a controller 5 combining a high-pressure air supply device 4 for supplying high-pressure air to the cutting machine 1 and an inverter 6 for controlling the thrust generator 2 as ground equipment. Is done.

水中切削機Ｍ１のエアー駆動式の切削機１は、前部に切削ビット１１を具備し、後部に給気部１２、排気部１３を有し、高圧のエアーを動力源として切削ビット１１を駆動するエアー駆動式の駆動部１４を具備し、給気部１２、排気部１３にそれぞれ給気管１２１、排気管１３１が連結される。この場合、切削機１はスパイキーハンマーが採用され、切削ビット１１として複数のビットと、駆動部１４として各ビットを前後方向に往復駆動するエアー駆動式のシリンダとを具備し、コンクリート構造物の壁面を数センチメートル程度までハツリ可能になっている。また、この場合、切削機１は水中切削機（Ｍ１）１基に付き１台搭載される。 The air-driven cutting machine 1 of the underwater cutting machine M1 has a cutting bit 11 at the front part, an air supply part 12 and an exhaust part 13 at the rear part, and drives the cutting bit 11 using high-pressure air as a power source. And an air supply pipe 121 and an exhaust pipe 131 are connected to the air supply part 12 and the exhaust part 13, respectively. In this case, the cutting machine 1 employs a spiky hammer, and includes a plurality of bits as the cutting bits 11 and an air-driven cylinder that reciprocally drives each bit in the front-rear direction as the drive unit 14. It is possible to chop up to several centimeters. In this case, one cutting machine 1 is mounted per one underwater cutting machine (M1).

水中切削機Ｍ１のプロペラ式の推力発生機２は、後部にプロペラ２１を具備し、前部に電気を駆動源とし、プロペラ２１の回転駆動する駆動部２２を具備する。この場合、推力発生機２は水中ジェッター（水中攪拌ポンプ）が採用され、プロペラ２１として撹拌羽根と、駆動部２２として電動モータとを具備し、撹拌羽根が電動モータの出力軸に直結されて、水中に水流を発生し撹拌可能になっている。また、この場合、推力発生機２は水中切削機（Ｍ！）１基に付き１台搭載される。 The propeller-type thrust generator 2 of the underwater cutting machine M1 includes a propeller 21 at the rear portion, and includes a drive unit 22 that rotates the propeller 21 using electricity as a drive source at the front portion. In this case, the thrust generator 2 employs an underwater jetter (underwater stirring pump), and includes a stirring blade as the propeller 21 and an electric motor as the drive unit 22, and the stirring blade is directly connected to the output shaft of the electric motor, A stream of water is generated in the water so that it can be stirred. Further, in this case, one thrust generator 2 is mounted per one underwater cutting machine (M!).

このシステムＳ１では、取付ベース３Ａは、鋼材などの金属材からなり、前後に延びる水平プレート３１と、水平プレート３１の下面の前端又は前端側に略垂直に連接される垂直プレート３２とを有する。
この取付ベース３Ａにより切削機１、推力発生機２が１つのユニットとして組み立てられる。取付ベース３Ａの垂直プレート３２の前面に切削機１が切削ビット１１を前方に向けてボルト及びナットにより取り付けられ、推力発生機２がプロペラ２１を後方に向けて水平プレート３１の下面後部に取付ブラケットを介してボルト及びナットにより取り付けられ、切削機１、推力発生機２がそれぞれ前後に相互の間に所定の間隔を介して同芯的に配置される。
この取付ベース３Ａにはまた、切削機１上で前後方向に向けて延び、揚重機械に吊り治具を介して係合可能な連結部３３を有する。この場合、連結部３３は鋼材などの金属製の細長いプレートからなり、このプレートに左右両側面間を貫通する複数の穴がプレートの長さ方向に一列にして形成される。この連結部３３は取付ベース３Ａの水平プレート３１の左右方向中央に連結部３３の長さ方向を水平プレート３１の前後方向に向けて固着され、切削機１の駆動部１４の前端部付近から推力発生機２のプロペラ２１付近まで延ばされて配置される。この連結部３３は任意の穴と揚重機械のフックやワイヤーなどの吊り治具との係合により揚重機械に連結される。
この取付ベース３Ａにはさらに、切削機１上で前後方向に向けて進退可能に設けられ、コンクリート構造物の壁面に当接して切削機１をコンクリート構造物の壁面に対して位置決めするためのガイド３４を有する。この場合、ガイド３４は、鋼材などの金属材により、取付ベース３Ａの水平プレート３１よりも幅広の平面視略矩形状の略平板状に形成され、左右方向中央の、前側及び後側の所定の位置に切り欠き部を有する本体プレート３４１と、この本体プレート３４１の外側縁部に沿って立ち上げ形成される細長い略平板状の立ち上がり部３４２とからなり、本体プレート３４１及び立ち上がり部３４２の前部側にそれぞれ複数の穴が貫通形成される。このガイド３４は、取付ベース３Ａの水平プレート３１上に前後に向けてスライド可能に取り付けられる。なお、この場合、ガイド３４は水平プレート３１上にボルト及びナットにより締結され、水平プレート３１又はガイド３４のボルト挿通部が前後方向に向けて長穴状に形成されて、ガイド３４の取付位置が前後方向に調整可能になっている。 In this system S1, the mounting base 3A is made of a metal material such as a steel material, and includes a horizontal plate 31 extending in the front-rear direction and a vertical plate 32 connected substantially vertically to the front end or front end side of the lower surface of the horizontal plate 31.
The cutting machine 1 and the thrust generator 2 are assembled as one unit by the mounting base 3A. The cutting machine 1 is mounted on the front surface of the vertical plate 32 of the mounting base 3A with bolts and nuts with the cutting bit 11 facing forward, and the thrust generator 2 is mounted on the rear surface of the horizontal plate 31 with the propeller 21 rearward. The cutting machine 1 and the thrust generator 2 are arranged concentrically with a predetermined distance between each other in the front-rear direction.
The attachment base 3A also has a connecting portion 33 that extends in the front-rear direction on the cutting machine 1 and can be engaged with a lifting machine via a hanging jig. In this case, the connecting portion 33 is made of an elongated plate made of metal such as steel, and a plurality of holes penetrating between the left and right side surfaces are formed in a row in the plate length direction. The connecting portion 33 is fixed to the horizontal center of the horizontal plate 31 of the mounting base 3A so that the length direction of the connecting portion 33 is directed to the front and rear direction of the horizontal plate 31, and thrust is generated from the vicinity of the front end portion of the driving portion 14 of the cutting machine 1. The generator 2 is extended and arranged near the propeller 21. The connecting portion 33 is connected to the lifting machine by engagement between an arbitrary hole and a lifting jig such as a hook or wire of the lifting machine.
The mounting base 3A is further provided so as to be able to advance and retreat in the front-rear direction on the cutting machine 1, and a guide for positioning the cutting machine 1 with respect to the wall surface of the concrete structure by contacting the wall surface of the concrete structure. 34. In this case, the guide 34 is formed of a metal material such as a steel material into a substantially flat plate shape having a substantially rectangular shape in plan view wider than the horizontal plate 31 of the mounting base 3A. A body plate 341 having a notch at a position, and an elongated, substantially flat plate-like rising portion 342 that rises along the outer edge of the body plate 341, and the front portion of the body plate 341 and the rising portion 342. A plurality of holes are formed through each side. The guide 34 is slidably mounted on the horizontal plate 31 of the mounting base 3A so as to slide forward and backward. In this case, the guide 34 is fastened on the horizontal plate 31 with bolts and nuts, and the bolt insertion portion of the horizontal plate 31 or the guide 34 is formed in a long hole shape in the front-rear direction, so that the mounting position of the guide 34 is It can be adjusted in the front-rear direction.

また、この水中切削機Ｍ１には、付属ユニットとして、水中切削機Ｍ１の取付ベース３Ａに係合し水中切削機Ｍ１を支持可能な架台７Ａを併せて備える。
この架台７Ａは、座部７１と座部７１の両側に略垂直に立ち上げられ、水中切削機Ｍ１を支持する一対の支持部７２とを有する。この場合、座部７１は、鋼材など金属製の左右一対の細長いプレート７１１と、この一対のプレート７１１の前部間及び後部間に連結される鋼材など金属製のパイプ７１２とからなり、一対の支持部７２はそれぞれ、鋼材など金属製の左右一対の細長いプレート７２１からなり、その一端から他端に向けて複数のボルト挿通孔７２０が形成され、この一対のプレート７２１が座部７１の各プレート７１１の中間部所定の位置に固着されて略垂直に立ち上げられ、全体として水中切削機Ｍ１の吊り姿勢の重心や安定性を考慮した形状を有している。一方、水中切削機Ｍ１の取付ベース３Ａには、この架台７Ａの支持部７２に対応する固定部３５として左右一対のプレートが形成され、これら各プレートに複数のボルト挿通孔（図示省略）が設けられる。
このようにして水中切削機Ｍ１は、揚重機の吊り治具に連結される場合や不使用時の保管の際に、水中切削機Ｍ１側の固定部３５をなす各プレートが架台７Ａ側の支持部７２をなす各プレートに合せられ、各プレート間がボルト、ナットの締結により固定されて架台７Ａ上に設置され、この架台７Ｂを介して作業現場や保管場所の地上面などに安定した姿勢で置かれ、水中切削機Ｍ１の使用の際に、水中切削機Ｍ１が架台７Ａから取り外しされるようになっている。 The underwater cutting machine M1 is also provided with a gantry 7A capable of supporting the underwater cutting machine M1 by engaging with the mounting base 3A of the underwater cutting machine M1 as an accessory unit.
The gantry 7A includes a seat portion 71 and a pair of support portions 72 that rise substantially vertically on both sides of the seat portion 71 and support the underwater cutting machine M1. In this case, the seat 71 includes a pair of left and right elongated plates 711 made of metal such as steel, and a pipe 712 made of metal such as steel connected between the front and rear portions of the pair of plates 711. Each of the support portions 72 is composed of a pair of left and right elongated plates 721 made of metal such as steel, and a plurality of bolt insertion holes 720 are formed from one end to the other end, and the pair of plates 721 are each plate of the seat portion 71. The middle part 711 is fixed at a predetermined position and is raised substantially vertically, and has a shape that takes into consideration the center of gravity and stability of the suspension posture of the underwater cutting machine M1 as a whole. On the other hand, the mounting base 3A of the underwater cutting machine M1 is formed with a pair of left and right plates as a fixing portion 35 corresponding to the support portion 72 of the gantry 7A, and a plurality of bolt insertion holes (not shown) are provided in these plates. It is done.
In this way, when the underwater cutting machine M1 is connected to the lifting jig of the lifting machine or stored when not in use, each plate forming the fixing portion 35 on the underwater cutting machine M1 side supports the gantry 7A side. Aligned with each plate forming the part 72, the plates are fixed by fastening bolts and nuts and installed on the gantry 7A. Through this gantry 7B, a stable posture is applied to the ground surface of the work site or storage location. The underwater cutting machine M1 is removed from the gantry 7A when the underwater cutting machine M1 is used.

地上設備の高圧エアー供給装置４は、エアー駆動式の切削機１の給気部１２に給気管１２１を介して接続される。この場合、切削機１にスパイキーハンマーが使用されるので、この高圧エアー供給装置４は例えばダウンザホールハンマー用やジャイアントブレーカー用のものと比べて小型のものになっている。
地上設備のコントローラ５は、コントローラ５と推力発生機２の電動モータとの間にインバータ６が介設されてなる小型、軽量、簡素な構成のもので、プロペラ式の推力発生機２に配線により電気的に接続される。 A high-pressure air supply device 4 for ground equipment is connected to an air supply unit 12 of an air-driven cutting machine 1 via an air supply pipe 121. In this case, since a spiky hammer is used for the cutting machine 1, the high-pressure air supply device 4 is smaller than those for a down-the-hole hammer or a giant breaker, for example.
The ground equipment controller 5 is a small, light, and simple configuration in which an inverter 6 is interposed between the controller 5 and the electric motor of the thrust generator 2, and is connected to the propeller type thrust generator 2 by wiring. Electrically connected.

図２にこの水中切削機システムＳ１の使用例を示している。この水中切削機システムＳ１を使って、水中のコンクリート構造物の壁面を切削する場合、まず、水中切削機Ｍ１をクレーンやウィンチなどの揚重機械により吊り下げて、水中に置き、排気管１３１は水中切削機Ｍ１から水上に導出して排気を大気中に放出可能な状態とし、揚重機械の誘導操作により水中切削機Ｍ１を水中で移動し、切削機１の切削ビット１１をコンクリート構造物の壁面に向けて対向させる。そして、地上設備のインバータ６を組み合わせたコントローラ５により推力発生機２のプロペラ２１の正逆回転方向、回転数を制御して推力発生機２の推力を調整し、ガイド３４の前部及び側部をコンクリート構造物の壁面に当接させることにより、切削機１の切削ビット１１をコンクリート構造物の壁面に案内し位置決めして、切削機１の切削ビット１１をコンクリート構造物の壁面に押し当て、高圧エアー供給装置４により切削機１を駆動して、切削ビット１１で当該壁面を切削する。なお、この切削時に水中切削機Ｍ１は反動で押し返されるが、この反動（押し返し）を推力発生機２の出力をインバータ６により調整することにより推力発生機２のプロペラ推力で抑え、水中切削機Ｍ１の姿勢を安定に維持しながら、切削を続行する。）。かかる作業を水中のコンクリート構造物の壁面に繰り返し行う。 FIG. 2 shows a usage example of the underwater cutting machine system S1. When cutting the wall surface of an underwater concrete structure using the underwater cutting machine system S1, first, the underwater cutting machine M1 is suspended by a lifting machine such as a crane or a winch and placed in water. The underwater cutting machine M1 is led out to the water so that the exhaust can be released into the atmosphere, and the underwater cutting machine M1 is moved underwater by the guide operation of the lifting machine, and the cutting bit 11 of the cutting machine 1 is moved to the concrete structure. Oppose to the wall. Then, the controller 5 combined with the inverter 6 of the ground equipment controls the forward / reverse rotation direction and the rotational speed of the propeller 21 of the thrust generator 2 to adjust the thrust of the thrust generator 2, and the front and side portions of the guide 34 are adjusted. , The cutting bit 11 of the cutting machine 1 is guided and positioned on the wall surface of the concrete structure, and the cutting bit 11 of the cutting machine 1 is pressed against the wall surface of the concrete structure. The cutting machine 1 is driven by the high-pressure air supply device 4, and the wall surface is cut by the cutting bit 11. In this cutting, the underwater cutting machine M1 is pushed back by the reaction, and this reaction (pushback) is suppressed by the propeller thrust of the thrust generator 2 by adjusting the output of the thrust generator 2 by the inverter 6, and the underwater cutting machine Cutting is continued while maintaining the posture of M1 stably. ). This operation is repeated on the wall surface of the underwater concrete structure.

以上説明したように、この水中切削機システムＳ１によれば、地上のクレーンやウィンチなどの揚重機械で水中切削機Ｍ１を吊下げて、水中を誘導移動させ、地上のコントローラ５及び高圧エアー供給装置４の操作により水中切削機Ｍ１を駆動し、切削ビット１１で水中のコンクリート構造物の壁面を切削するようにしたので、従来のようなダイバー（潜水士）による水中でのコンクリート構造物の壁面の切削作業を不要とし、人力作業を大幅に低減することができる。また、水中の切削作業を人力作業でなく、機械施工としたことで、深度や視界などの水中の作業環境に影響されることがなく、この切削作業を安全かつ効率よく実施することができる。
また、このシステムＳ１では、水中切削機Ｍ１をクレーンやウィンチなどの揚重機械で吊下げて誘導移動するので、コンクリート構造物に反力受けのレールや架台などを設置する必要がなく、水中に固定することなしに使用することができる。また、この場合、水中切削機Ｍ１を切削機１と推力発生機２とにより構成し、全体の大きさ、重量を小さくし、カウンターウェイトなどの重量物を用いることもないので、取扱いを安全かつ容易にし、優れた操作性を実現することができ、さらに、揚重機械で水中切削機Ｍ１を吊下げるときのワイヤーの切断のリスクや万が一落下した時のリスクなども小さく済む。
さらに、このシステムＳ１では、水中切削機Ｍ１の切削機１が、エアー駆動式のため、機械の破損時でも環境汚染を防止することができる。また、この切削機１の場合、水中の作業位置で発生する排気（気泡）を排気管１３１により水上に導出して大気中に放出するので、濁水の発生、拡散を抑制することができる。さらに、この切削機１にはスパイキーハンマーを用いているので、エアーの消費が特に大きい機械（例えば、ダウンザホールハンマー、ジャイアントブレーカーなど）に比べて、機器それ自体の大きさ、重量を小さくし、また、エアー供給用の配管の径を小さくして、地上設備（高圧エアー供給装置４）も軽くコンパクトにして設置することができる。他方、水中切削機Ｍ１の推力発生機２にあっては、水中ジェッター（電動モータ直結のプロペラ）をインバータ６を組み合わせたコントローラ５によりを回転駆動するので、水中切削機Ｍ１の制御が行いやすい。また、水中ジェッターは、水中ジェッターに代えて例えばウォータージェットを利用した場合に比べると、地上設備（インバータ６を組み合わせたコントローラ５）も簡素で軽く、コンパクトに設置することができる。 As described above, according to the underwater cutting machine system S1, the underwater cutting machine M1 is suspended by a lifting machine such as a ground crane or a winch to be guided and moved underwater, and the ground controller 5 and high-pressure air supply are supplied. Since the underwater cutting machine M1 is driven by the operation of the apparatus 4 and the wall surface of the underwater concrete structure is cut with the cutting bit 11, the wall surface of the concrete structure underwater by a conventional diver (diver) This eliminates the need for a cutting operation, and can greatly reduce human labor. In addition, since the underwater cutting work is mechanical work rather than human work, the cutting work can be performed safely and efficiently without being affected by the underwater work environment such as depth and field of view.
Further, in this system S1, since the underwater cutting machine M1 is suspended and guided by a lifting machine such as a crane or a winch, there is no need to install a reaction force receiving rail or frame on the concrete structure. Can be used without fixing. Further, in this case, the underwater cutting machine M1 is constituted by the cutting machine 1 and the thrust generator 2, the overall size and weight are reduced, and heavy objects such as a counterweight are not used. This makes it easy to achieve excellent operability, and further reduces the risk of cutting the wire when the underwater cutting machine M1 is suspended by a lifting machine, and the risk of being dropped.
Furthermore, in this system S1, since the cutting machine 1 of the underwater cutting machine M1 is of an air drive type, environmental pollution can be prevented even when the machine is broken. Further, in the case of this cutting machine 1, since exhaust (bubbles) generated at a working position in water is led out to the water through the exhaust pipe 131 and released into the atmosphere, generation and diffusion of muddy water can be suppressed. Further, since this cutting machine 1 uses a spiky hammer, the size and weight of the device itself is reduced compared to a machine (for example, down-the-hole hammer, giant breaker, etc.) that consumes a lot of air. The diameter of the air supply pipe can be reduced, and the ground equipment (high pressure air supply device 4) can be installed lightly and compactly. On the other hand, in the thrust generator 2 of the underwater cutting machine M1, the underwater jetter (propeller directly connected to the electric motor) is rotationally driven by the controller 5 combined with the inverter 6, so that the underwater cutting machine M1 can be easily controlled. Also, the underwater jetter can be installed in a compact, light and compact ground facility (the controller 5 combined with the inverter 6) as compared with, for example, a water jet instead of the underwater jetter.

図３に第２の実施の形態を示している。
図３に示すように、この水中切削機システムＳ２は、第１の実施の形態と概ね共通の構成を備え、推力発生機２台型の点で第１の実施の形態（推力発生機１台型）と異なる。なお、この実施の形態では、第１の実施の形態と共通の構成については、説明上必要な箇所を除き、第１の実施の形態と同じ符号を付してその重複する説明を省略し、第１の実施の形態と異なる点について説明する。
この水中切削機システムＳ２では、取付ベース３Ａは、前後に延びる水平プレート３１と、水平プレート３１の下面の前端又は前端側に略垂直に連接される垂直プレート３２とからなり、特に水平プレート３１は後部側の両側部が両側方に向けて突出する拡張部３１１を有し、１台の切削機１が切削ビット１１を前方に向けて垂直プレート３２の前面に取り付けられ、２台の推力発生機２がそれぞれプロペラ２１を後方に向けて水平プレート３１の下面後部と各拡張部３１１との間で各推力発生機２の取付位置を調整可能に取り付けられる。なお、この場合、２台の推力発生機２はそれぞれ、水平プレート３１の後部と各拡張部３１１との間に取付ブラケットを介してボルト及びナットにより締結され、水平プレート３１の後部と各拡張部３１１との間にボルト挿通部が左右方向に向けて長穴状に形成されて、各推力発生機２の取付位置が左右方向に調整されるようになっている。
また、この実施の形態では、コンクリート構造物の壁面の特に隅の両側に当接して切削機１をコンクリート構造物の壁面の隅に位置決めするための補助ガイド３６を併せて例示している。この補助ガイド３６は、鋼材などの金属材、この場合、アングル材などからなる一対の細長いプレート３６１で構成され、ガイド３４の前部両側に略ハの字形に配置されてボルト及びナットにより取り付けられ、各プレート３６１の先端縁間が略９０°の角度をなす。このようにして補助ガイド３４の先端及び側面をコンクリート構造物の壁面の隅の両側に当接させることにより、切削機１の切削ビット１１をコンクリート構造物の壁面の隅に案内し、位置決めすることができる。なお、この補助ガイド３６は既述の第１の実施の形態、後述の第３の実施の形態でも、ガイド３４に同様に取り付けて同様に使用できることは勿論である。
このようにしても第１の実施の形態と同様に使用して同様の作用効果を得ることができ、この場合、推力発生機２が２台になった分だけ推力を増大させることができる。 FIG. 3 shows a second embodiment.
As shown in FIG. 3, the underwater cutting machine system S2 has a configuration substantially the same as that of the first embodiment, and is the first embodiment (one thrust generator) in terms of the two thrust generators. Type). In this embodiment, the same configurations as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, except for the portions necessary for the description, and the redundant description is omitted. Differences from the first embodiment will be described.
In this underwater cutting machine system S2, the mounting base 3A includes a horizontal plate 31 extending in the front-rear direction and a vertical plate 32 connected substantially vertically to the front end or front end side of the lower surface of the horizontal plate 31, and in particular, the horizontal plate 31 is Both side portions on the rear side have extended portions 311 protruding toward both sides, and one cutting machine 1 is attached to the front surface of the vertical plate 32 with the cutting bit 11 facing forward, and two thrust generators 2 are attached so that the propeller 21 is directed rearward, and the mounting position of each thrust generator 2 is adjustable between the rear portion of the lower surface of the horizontal plate 31 and each expansion portion 311. In this case, the two thrust generators 2 are respectively fastened by bolts and nuts via mounting brackets between the rear portion of the horizontal plate 31 and the respective extension portions 311, and the rear portion of the horizontal plate 31 and each of the extension portions. A bolt insertion part is formed in the shape of a long hole between 311 and the left-right direction, and the attachment position of each thrust generator 2 is adjusted to the left-right direction.
Further, in this embodiment, an auxiliary guide 36 for positioning the cutting machine 1 at the corner of the wall surface of the concrete structure in contact with both sides of the wall surface of the concrete structure is illustrated. The auxiliary guide 36 is composed of a pair of elongated plates 361 made of a metal material such as a steel material, in this case, an angle material, and is arranged in a substantially square shape on both sides of the front portion of the guide 34 and attached by bolts and nuts. The angle between the leading edges of the plates 361 is approximately 90 °. In this way, the cutting bit 11 of the cutting machine 1 is guided and positioned at the corner of the wall surface of the concrete structure by bringing the tip and side surfaces of the auxiliary guide 34 into contact with both sides of the corner of the wall surface of the concrete structure. Can do. Of course, the auxiliary guide 36 can be similarly attached to the guide 34 in the first embodiment described above and the third embodiment described later.
Even if it does in this way, it can use similarly to 1st Embodiment, and can obtain the same effect, In this case, thrust can be increased only by the part for which the thrust generator 2 became two units | sets.

図４に第３の実施の形態を示している。
図４に示すように、この水中切削機システムＳ３は、第１の実施の形態と概ね共通の構成を備え、推力発生機４台型の点で第１の実施の形態（推力発生機１台型）と異なる。なお、この実施の形態では、第１の実施の形態と共通の構成については、説明上必要な箇所を除き、第１の実施の形態と同じ符号を付してその重複する説明を省略し、第１の実施の形態と異なる点について説明する。
この水中切削機システムＳ３では、取付ベース３Ｂは、上面に水平のフラット面３０１を有し、前面、後面に開口を有する全体として左右対称の五角形の枠状のフレーム３０２と、枠状のフレーム３０２の前面開口に設けられる前部プレート３０３とからなり、１台の切削機１が切削ビット１１を前方に向けて前部プレート３０３に取り付けられ、４台の推力発生機２がそれぞれプロペラ２１を後方に向けて枠状のフレーム３０２の外周面に左右対称に取り付けられる。なお、この場合、各推力発生機２は枠状のフレーム３０２の外周面に取付ブラケットを介してボルト及びナットにより締結される。
また、このシステムＳ３では、前部プレート３０３に切削機１の駆動部１４の上部に延びる水平プレート３０４が設けられ、ガイド３４はこの水平プレート３０４にボルト及びナットにより取り付けられる。またこの場合、連結部３３は下部が略逆三角形状に変形され、取付ベース３Ｂの上面の左右方向中央に連結部３３の長さ方向を水平プレート３０４の前後方向に向けて固着され、切削機１の駆動部１４の前端部付近から推力発生機２のプロペラ２１付近まで延ばされて配置される。
さらに、このシステムＳ３には、水中切削機Ｍ２の付属ユニットとして、水中切削機Ｍ２の取付ベース３Ｂに係合し水中切削機Ｍ３を支持可能な架台７Ｂを併せて備える。
この架台７Ｂの場合、水中切削機Ｍ３の取付ベース３Ｂが枠状に形成されたことで、第１、第２の実施の形態と異なる形状になっている。この架台７Ｂは、座部７３と座部７３の両側に略垂直に立ち上げられ、水中切削機Ｍ３の取付ベース３Ｂを支持する一対の支持部７４とを有する。この場合、座部７３は、鋼材など金属製の前後一対の細長いプレート７３１からなり、一対の支持部７４は鋼材など金属製の断面略コ字形の支持プレート７４１からなり、一対のプレート７３１の中央部間に支持プレート７４１がパイプ７５を介して架け渡しされボルト及びナットにより固定されて構成され、全体として水中切削機Ｍ３の吊り姿勢の重心や安定性を考慮した形状を有している。このようにして水中切削機Ｍ３は、揚重機の吊り治具に連結される場合や不使用時の保管の際に、水中切削機Ｍ３側の取付ベース３Ｂの外周面の下部及びその両側が架台７Ｂの支持プレート７４１に支持されて架台７Ｂ上に設置され、この架台７Ｂを介して作業現場や保管場所の地上面などに安定した姿勢で置かれ、水中切削機Ｍ３の使用の際に、水中切削機Ｍ３は架台７Ｂから取り外しされるようになっている。なお、この場合、水中切削機Ｍ３の取付ベース３Ｂと架台７Ｂの支持プレート７４１がボルト、ナットで固定されるようにしてもよい。
このようにしても第１の実施の形態と同様に使用して同様の作用効果を得ることができ、この場合、推力発生機２が４台になった分だけ推力を増大させることができる。 FIG. 4 shows a third embodiment.
As shown in FIG. 4, this underwater cutting machine system S3 has a configuration substantially the same as that of the first embodiment, and the first embodiment (one thrust generator) in terms of four thrust generators. Type). In this embodiment, the same configurations as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, except for the portions necessary for the description, and the redundant description is omitted. Differences from the first embodiment will be described.
In this underwater cutting machine system S 3, the mounting base 3 B has a horizontally flat pentagonal frame 302 having a horizontal flat surface 301 on the upper surface and openings on the front and rear surfaces, and a frame-shaped frame 302. 1 cutting machine 1 is attached to the front plate 303 with the cutting bit 11 facing forward, and the four thrust generators 2 respectively push the propeller 21 backward. Toward the outer peripheral surface of the frame-shaped frame 302 toward the left and right. In this case, each thrust generator 2 is fastened to the outer peripheral surface of the frame-like frame 302 with a bolt and a nut via a mounting bracket.
Further, in this system S3, a horizontal plate 304 that extends above the drive unit 14 of the cutting machine 1 is provided on the front plate 303, and the guide 34 is attached to the horizontal plate 304 with bolts and nuts. Further, in this case, the lower portion of the connecting portion 33 is deformed into a substantially inverted triangular shape, and is fixed to the center of the upper surface of the mounting base 3B in the left-right direction with the length direction of the connecting portion 33 facing the front and rear direction of the horizontal plate 304 1 is extended from the vicinity of the front end of the drive unit 14 to the vicinity of the propeller 21 of the thrust generator 2.
Further, the system S3 is also provided with a gantry 7B that can be engaged with the attachment base 3B of the underwater cutting machine M2 and can support the underwater cutting machine M3 as an accessory unit of the underwater cutting machine M2.
In the case of the gantry 7B, the mounting base 3B of the underwater cutting machine M3 is formed in a frame shape, and thus has a shape different from the first and second embodiments. The gantry 7B includes a seat portion 73 and a pair of support portions 74 that are substantially vertically raised on both sides of the seat portion 73 and support the mounting base 3B of the underwater cutting machine M3. In this case, the seat portion 73 includes a pair of front and rear elongated plates 731 made of metal such as steel, and the pair of support portions 74 includes a support plate 741 made of metal such as steel and having a substantially U-shaped cross section. A support plate 741 is bridged between the parts via a pipe 75 and fixed with bolts and nuts, and has a shape that takes into account the center of gravity and stability of the underwater cutting machine M3. In this way, when the underwater cutting machine M3 is connected to the lifting jig of the lifting machine or stored when not in use, the lower part of the outer peripheral surface of the mounting base 3B on the side of the underwater cutting machine M3 and its both sides are mounted. 7B is supported on the support plate 741 and installed on the base 7B. The base 7B is placed on the ground surface of the work site or the storage place through the base 7B in a stable posture. When the underwater cutting machine M3 is used, The cutting machine M3 is removed from the gantry 7B. In this case, the attachment base 3B of the underwater cutting machine M3 and the support plate 741 of the gantry 7B may be fixed with bolts and nuts.
Even if it does in this way, it can use similarly to 1st Embodiment, and can obtain the same effect, In this case, thrust can be increased only by the part for which the thrust generator 2 became four units | sets.

Ｓ１、Ｓ２、Ｓ３水中切削機システム
Ｍ１、Ｍ２、Ｍ３水中切削機
１エアー駆動式の切削機（スパイキーハンマー）
１１切削ビット（複数のビット）
１２給気部
１２１給気管
１３排気部
１３１排気管
１４エアー駆動式の駆動部（エアー駆動式のシリンダ）
２プロペラ式の推力発生機（水中ジェッター）
２１プロペラ（撹拌羽根）
２２駆動部（電動モータ）
３Ａ取付ベース
３１水平プレート
３１１拡張部
３２垂直プレート
３３連結部
３４ガイド
３４１本体プレート
３４２立ち上がり部
３５固定部
３６補助ガイド
３６１プレート
３Ｂ取付ベース
３０１フラット面
３０２枠状のフレーム
３０３前部プレート
３０４水平プレート
４高圧エアー供給装置
５コントローラ
６インバータ
７Ａ架台
７１座部
７１１プレート
７１２パイプ
７２支持部
７２０ボルト挿通孔
７２１プレート
７Ｂ架台
７３座部
７３１プレート
７４支持部
７４１支持プレート
７５パイプ S1, S2, S3 Underwater cutting machine system M1, M2, M3 Underwater cutting machine 1 Air-driven cutting machine (Spiky hammer)
11 Cutting bits (multiple bits)
12 Air supply part 121 Air supply pipe 13 Exhaust part 131 Exhaust pipe 14 Air drive type drive part (Air drive type cylinder)
2 Propeller type thrust generator (underwater jetter)
21 Propeller (Agitating blade)
22 Drive unit (electric motor)
3A Mounting base 31 Horizontal plate 311 Expansion portion 32 Vertical plate 33 Connection portion 34 Guide 341 Main body plate 342 Rising portion 35 Fixing portion 36 Auxiliary guide 361 Plate 3B Mounting base 301 Flat surface 302 Frame-like frame 303 Front plate 304 Horizontal plate 4 High pressure air supply device 5 Controller 6 Inverter 7A Mounting base 71 Seat portion 711 Plate 712 Pipe 72 Supporting portion 720 Bolt insertion hole 721 Plate 7B Mounting base 73 Seating portion 731 Plate 74 Supporting portion 741 Supporting plate 75 Pipe

Claims

An underwater cutting machine system used to cut the wall of a concrete structure in water,
As an underwater facility, it has a cutting bit in the front part, an air supply part and an exhaust part in the rear part, a drive part that drives the cutting bit using high-pressure air as a power source, and An air-driven cutting machine for cutting a wall surface, an air supply pipe connected to the air supply part of the cutting machine, an air exhaust pipe connected to the exhaust part, and an exhaust pipe connected to the rear of the cutting machine via a mounting base An underwater cutting machine comprising a propeller at the rear, a drive unit for rotating the propeller, using a propeller at the front, and a propeller type thrust generator for generating thrust in water When,
As ground equipment, connected to the air supply section of the air-driven cutting machine via the air supply pipe, and a high-pressure air supply device that supplies high-pressure air to the cutting machine, and the propeller type thrust generator A controller that is electrically connected by wiring and combined with an inverter that controls the thrust generator;
With
The underwater cutting machine is suspended by a lifting machine and placed in water.
The exhaust pipe is led to the water from the underwater cutting machine to be in a state where the exhaust can be released into the atmosphere,
The underwater cutting machine is moved underwater by a guidance operation of the lifting machine, and the cutting bit of the cutting machine is opposed to the wall surface of the concrete structure,
While adjusting the thrust of the thrust generator by the controller combined with the inverter of the ground equipment and pressing the cutting bit of the cutting machine against the wall surface of the concrete structure, the cutting machine is controlled by the high-pressure air supply device. Drive and cut the wall surface with the cutting bit,
An underwater cutting machine system characterized by that.

The air-driven cutting machine includes a plurality of bits as cutting bits and an air-driven cylinder that reciprocally drives each bit in the front-rear direction as a driving unit, and the wall surface of the concrete structure is up to several centimeters. The underwater cutting machine system according to claim 1, wherein a spiky hammer that can be chopped is employed.

The propeller type thrust generator includes a stirring blade as a propeller and an electric motor as a drive unit, and the stirring blade is directly connected to an output shaft of the electric motor to generate a water flow in the water and stir the water. The underwater cutting machine system according to claim 1 or 2, wherein a stirring pump is employed.

The underwater cutting machine system according to any one of claims 1 to 3, wherein the attachment base has a connecting portion that extends in the front-rear direction on the cutting machine and that can be engaged with the lifting machine via a lifting jig.

The mounting base includes a guide that is provided so as to be able to advance and retreat in the front-rear direction on the cutting machine, and that contacts the wall surface of the concrete structure to position the cutting machine with respect to the wall surface of the concrete structure. The underwater cutting machine system in any one of thru | or 4.

The mounting base has a horizontal plate extending in the front-rear direction and a vertical plate connected substantially vertically to the front end or front end side of the lower surface of the horizontal plate, and one cutting machine has the vertical direction with the cutting bit facing forward. The underwater cutting machine system according to any one of claims 1 to 5, wherein the underwater cutting machine system is attached to the front surface of the plate, and a single thrust generator is attached to a rear portion of the lower surface of the horizontal plate with a propeller facing rearward.

The mounting base has a horizontal plate extending in the front-rear direction, and a vertical plate connected substantially vertically to the front end or front end side of the lower surface of the horizontal plate, and the horizontal plate has both sides on the rear side facing both sides. A projecting extension is provided, one cutting machine is attached to the front surface of the vertical plate with the cutting bit facing forward, and two thrust generators each facing the propeller rearward and the lower surface of the horizontal plate The underwater cutting machine system according to any one of claims 1 to 5, wherein an attachment position of each thrust generator is attached between a rear part and each extension part so as to be adjustable.

The mounting base has a horizontal flat surface on the upper surface, a symmetrical frame-like frame having an opening on the front surface and the rear surface, and a front plate provided in the front opening of the frame-shaped frame. A plurality of cutting machines are mounted on the front plate with a cutting bit facing forward, and four thrust generators are mounted symmetrically on the outer peripheral surface of the frame-shaped frame with the propeller facing rearward. The underwater cutting machine system according to any one of 1 to 5.

The underwater cutting machine system according to any one of claims 1 to 8, further comprising, as an accessory unit of the underwater cutting machine, a mount that engages with a mounting base of the underwater cutting machine and can support the underwater cutting machine.