JP5121274B2 - Method and apparatus for treating inner surface of cylindrical body - Google Patents
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- 238000000034 method Methods 0.000 title description 17
- 230000008602 contraction Effects 0.000 claims description 11
- 238000011282 treatment Methods 0.000 claims description 9
- 230000001680 brushing effect Effects 0.000 claims description 6
- 238000004381 surface treatment Methods 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims 2
- 239000010425 asbestos Substances 0.000 description 17
- 229910052895 riebeckite Inorganic materials 0.000 description 17
- 239000010410 layer Substances 0.000 description 13
- 238000005299 abrasion Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000007790 scraping Methods 0.000 description 8
- 239000002344 surface layer Substances 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 235000012489 doughnuts Nutrition 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000006061 abrasive grain Substances 0.000 description 3
- 150000002013 dioxins Chemical class 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 2
- 206010022000 influenza Diseases 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 241000904500 Oxyspora paniculata Species 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
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- Cleaning In General (AREA)
- Chimneys And Flues (AREA)
- Incineration Of Waste (AREA)
Description
本発明は、焼却炉や加熱炉の煙突や煙道の内壁面に形成されているアスベスト層やダイオキシン等の有害物による汚染部を擦削して除去するほか、各種筒体内面の清掃、研削、研磨などの処理を効果的に行うことのできる、筒体の内面処理方法および装置に関するものである。 In addition to scrubbing and removing contaminated parts due to harmful substances such as asbestos layers and dioxins formed on the inner wall of the chimney and flue of incinerators and heating furnaces, the present invention also cleans and grinds the inner surface of various cylinders The present invention relates to a method and an apparatus for treating the inner surface of a cylinder, which can effectively perform a treatment such as polishing.
焼却炉、加熱炉など各種炉において、煙突や煙道の内壁面は、表層が断熱材で形成されている。断熱材として、従来はほとんどの設備でアスベストが使用されていた。また、従来の炉では、操業中に発生したダイオキシンなどの有害物で内壁表層が汚染されているものもある。これら設備は稼動させることができない。解体もできないで放置されているものが多い。解体するには、事前にアスベスト層や汚染層を除去して、作業者の安全確保や解体時の有害物飛散防止を図る必要がある。そして、除去作業も同様に、作業者の安全が確保され、かつ有害物拡散が阻止されるものでなければならない。
また、煙突や煙道には煤などの付着物を除去するための清掃も必要である。清掃が必要な設備は、各種配管等にも及ぶ。
In various furnaces such as incinerators and heating furnaces, the inner surface of the chimney or flue is formed of a heat insulating material. Conventionally, asbestos has been used in most facilities as a heat insulating material. In some conventional furnaces, the inner wall surface is contaminated with harmful substances such as dioxin generated during operation. These facilities cannot be operated. There are many things left undissolved. In order to dismantle, it is necessary to remove the asbestos layer and the contaminated layer in advance to ensure the safety of workers and prevent the scattering of harmful substances during dismantling. Similarly, the removal work must ensure the safety of workers and prevent the diffusion of harmful substances.
In addition, the chimney and flues must be cleaned to remove deposits such as soot. Equipment that needs cleaning extends to various pipes.
煙突など長尺な筒体の内面を処理する手段として、各種の技術が知られている。本発明に関連する技術として、管などの筒体内面を鎖でたたいて清浄化するものがある。例えば、特許文献1には、鉄管内において2個又はそれ以上のモータおよびこれに連動する鎖ないしは鎖状物を相互に逆回転させ、鎖ないしは鎖状物を内壁面に接触させることにより、内壁面の錆を除去する方法および装置が開示されている。 Various techniques are known as means for treating the inner surface of a long cylindrical body such as a chimney. As a technique related to the present invention, there is a technique of cleaning the inner surface of a cylindrical body such as a pipe by a chain. For example, Patent Document 1 discloses that two or more motors and a chain or a chain-like object interlocking with each other in a steel pipe are rotated in reverse to bring the chain or the chain-like substance into contact with an inner wall surface. A method and apparatus for removing wall rust is disclosed.
また、本発明者は特許文献2の技術を提案している。すなわち、円筒状構造物内に配設された複数のヘッドを内壁面の略垂直軸まわりに自転させ、かつ円筒軸まわりに公転させ、各ヘッドに保持させた剛毛の毛先を内壁面に圧接することで内壁面を擦削するか、同様にして切削刃で切削する技術である。各ヘッドを円筒軸方向2段に配設し、各段のヘッドを互いに逆方向に公転させるのが好ましいとしている。
焼却炉や加熱炉の煙突や煙道の内面表層を形成しているアスベスト層やダイオキシン等による汚染部を除去するにあたり、安全に、かつできるだけ簡易な手段で作業できることが望まれる。簡易な手段として特許文献1などに開示されているような、筒体内部で鎖を回転させて内面に打ち付けることも考えられるが、効果的ではない。 It is desirable to be able to work safely and with the simplest possible means in removing contaminated parts such as asbestos layers and dioxins forming the inner surface layer of an incinerator or heating furnace or the inner surface of a flue. As a simple means, it is possible to rotate the chain inside the cylinder and hit it against the inner surface as disclosed in Patent Document 1, but it is not effective.
そこで本発明が解決しようとする課題は、焼却炉、加熱炉など各種炉において、煙突や煙道の内面表層に断熱材として形成されている有害なアスベスト層やダイオキシン等による汚染部を安全かつ効果的に除去するほか、各種配管などを含む筒体も対象とし、表層除去のほか清掃、研削、研磨などの処理を効果的に行うことである。 Therefore, the problem to be solved by the present invention is to safely and effectively protect the contaminated part due to harmful asbestos layer or dioxin formed as a heat insulating material on the inner surface layer of the chimney or flue in various furnaces such as incinerators and heating furnaces. In addition to removing the surface layer, it is also intended to cover a cylindrical body including various pipes, and effectively perform processing such as cleaning, grinding, and polishing in addition to surface layer removal.
上記課題を解決するための本発明法は、ローラを挟んで対向する2枚の内プレートと、該内プレートを挟持する2枚の外プレートとを、内・外プレート端部同志が重なる部位で、ローラを貫通しローラ支軸となるピン7で連結する形態を繰り返して伸びるローラチェーンの伸縮体を回転盤の周縁に周方向等間隔に複数本配設し、
各ローラチェーンの伸縮体の先端から複数個のプレートには、それぞれブラシ処理具が装着されており、ローラチェーンの各ローラ間に弾性体として引張りコイルバネを通し、該バネの一端のフックを回転盤側端部のローラに、該バネの他端のフックをブラシ処理具が装着された複数個のプレートのうち、回転盤に最も近いプレートの回転盤に近い端部のローラにそれぞれ掛渡すことで、回転盤の非回転時にはローラチェーンの伸縮体が縮短するように構成されており、
回転盤を筒体軸中心に回転させることで各伸縮体を遠心力で伸長させると、各ローラチェーンの伸縮体の先端から複数個のプレートに装着されている各ブラシ処理具が、ほぼ均等に筒体内面に圧接してブラッシングしつつ筒体内面を摺動し、且つ、回転盤を筒体軸方向に移動させることで筒体内面全体を確実に均一にブラッシングすることを特徴とする筒体の内面処理方法である。
The method of the present invention for solving the above-described problem is that two inner plates facing each other across a roller and two outer plates sandwiching the inner plate are joined at a portion where inner and outer plate end portions overlap each other. A plurality of roller chain expansion and contraction bodies that extend repeatedly by repeating the form of connecting with pins 7 that pass through the rollers and serve as roller support shafts, are arranged at equal intervals in the circumferential direction on the periphery of the rotating disk;
A plurality of plates are mounted with a brush processing tool from the tip of each roller chain expansion / contraction body, a tension coil spring is passed as an elastic body between each roller of the roller chain, and a hook at one end of the spring is attached to the rotating disk. By hooking the hook at the other end of the spring to the roller at the end of the plate that is closest to the turntable of the plate closest to the turntable, among the plurality of plates mounted with the brush processing tool, The roller chain expansion and contraction is shortened when the turntable is not rotating.
When each telescopic body is extended by centrifugal force by rotating the turntable around the cylinder axis, each brush treatment tool attached to a plurality of plates from the tip of each roller chain telescopic body is almost evenly distributed. A cylindrical body characterized by sliding uniformly on the inner surface of the cylindrical body while sliding against the inner surface of the cylindrical body and brushing the entire inner surface of the cylindrical body with certainty by moving the rotating disk in the axial direction of the cylindrical body. This is an inner surface treatment method.
本発明法において、
回転盤を回転軸方向、即ち、内面処理する筒体の軸方向に偶数段設け、奇数段目の回転盤と、偶数段目の回転盤とをたがいに逆方向に回転させることでより優れた効果が発揮される。
そして、好ましい具体的手段は、ローラを挟んで対向する2枚の内プレートと、該内プレートを挟持する2枚の外プレートとを、内・外プレート端部同志が重なる部位で、ローラを貫通しローラ支軸となるピン7で連結する形態を繰り返して伸びるローラチェーンの伸縮体を回転盤の周縁に周方向等間隔に複数本配設し、
各ローラチェーンの伸縮体の先端から複数個のプレートには、それぞれブラシ処理具が装着されており、ローラチェーンの各ローラ間に弾性体として引張りコイルバネを通し、該バネの一端のフックを回転盤側端部のローラに、該バネの他端のフックをブラシ処理具が装着された複数個のプレートのうち、回転盤に最も近いプレートの回転盤に近い端部のローラにそれぞれ掛渡すことで、回転盤の非回転時にはローラチェーンの伸縮体が縮短するように構成されており、
回転盤を筒体軸中心に回転させることで各伸縮体を遠心力で伸長させると、各ローラチェーンの伸縮体の先端から複数個のプレートに装着されている各ブラシ処理具が、ほぼ均等に筒体内面に圧接してブラッシングしつつ筒体内面を摺動し、
且つ、回転盤を筒体軸方向に移動させることで筒体内面全体を確実に均一にブラッシングできるように構成されていることを特徴とする筒体の内面処理装置である。
In the method of the present invention,
Even more stages are provided in the rotation axis direction, that is, in the axial direction of the cylinder to be internally treated , and the odd numbered rotation disk and the even numbered rotation disk are rotated in the reverse direction. The effect is demonstrated.
A preferred specific means is that two inner plates facing each other across the roller and two outer plates sandwiching the inner plate pass through the roller at the portion where the inner and outer plate ends overlap each other. A plurality of roller chain expansion and contraction bodies that are repeatedly extended in the form of being connected by pins 7 serving as roller support shafts, are arranged at equal intervals in the circumferential direction on the periphery of the rotating disk,
A plurality of plates are mounted with a brush processing tool from the tip of each roller chain expansion / contraction body, a tension coil spring is passed as an elastic body between each roller of the roller chain, and a hook at one end of the spring is attached to the rotating disk. By hooking the hook at the other end of the spring to the roller at the end of the plate that is closest to the turntable of the plate closest to the turntable, among the plurality of plates mounted with the brush processing tool, The roller chain expansion and contraction is shortened when the turntable is not rotating.
When each telescopic body is extended by centrifugal force by rotating the turntable around the cylinder axis, each brush treatment tool attached to a plurality of plates from the tip of each roller chain telescopic body is almost evenly distributed. While sliding against the inner surface of the cylinder while brushing,
In addition, the cylindrical inner surface treatment apparatus is configured to surely and uniformly brush the entire inner surface of the cylinder by moving the rotating disk in the cylinder axis direction.
また、上記課題を解決するための本発明装置は、
回転盤を回転軸方向、即ち、内面処理する筒体の軸方向に偶数段設け、奇数段目の回転盤と、偶数段目の回転盤とをたがいに逆方向に回転させる回転機構を備えていることを特徴とする筒体の内面処理装置である。
Moreover, the device of the present invention for solving the above problems is as follows.
A rotating mechanism is provided with an even number of stages in the direction of the axis of rotation, that is, the axial direction of the cylinder to be internally treated, and a rotating mechanism that rotates the odd numbered stage rotating disk and the even numbered stage rotating disk in the reverse direction. A cylindrical body inner surface treatment apparatus.
本発明により、焼却炉や加熱炉など各種炉の煙突や煙道の内面に形成されているアスベスト断熱層やダイオキシン等による汚染部を、簡易な手段で安全かつきわめて効果的に擦削除去することができる。また、各種配管などの筒体内面についても、アスベスト等の表層除去のほか、清掃、研削、研磨などの処理を同様に行うことができる。装置構成は比較的単純で汎用性があり、取扱い容易である。従来技術ではなし得なかった小径煙突内のアスベスト層除去も行える。小型装置により、アスベスト層の内径が220mmφの小径煙突についてもアスベスト除去が可能である。処理に際しては、筒体内部を無人化できるので作業者の安全が確保される。 In accordance with the present invention, the asbestos insulation layer formed on the inner surface of chimneys and flues of various furnaces such as incinerators and heating furnaces, and contaminated parts due to dioxins, etc. can be removed safely and very effectively by simple means. Can do. In addition, on the inner surface of the cylindrical body such as various pipes, in addition to removing the surface layer such as asbestos, treatments such as cleaning, grinding, and polishing can be similarly performed. The device configuration is relatively simple, versatile, and easy to handle. It is also possible to remove the asbestos layer in the small-diameter chimney that could not be achieved with the prior art. Asbestos removal is also possible with a small-sized chimney whose inner diameter of the asbestos layer is 220 mmφ by a small device. During processing, the inside of the cylinder can be unmanned, so that worker safety is ensured.
本発明の最大の特徴は、ローラチェーン等の伸縮体にコイルバネ等の弾性体を具備させたことである。これにより、長尺のローラチェーン等が回転盤の非回転時には縮短していて、筒体への取付け取外しが容易なばかりでなく、回転時には伸長して、先端に装着したブラシ等の処理具による擦削等の筒体内面処理能力が著しく向上し、均一良好な処理が行えるという優れた効果が発揮される。
このため、筒体内周が真円でなくても、長さ方向に内径が多少変動していても、また多少の凹凸があっても全面均一に処理することができる。
The most important feature of the present invention is that an elastic body such as a coil spring is provided on a stretchable body such as a roller chain. As a result, a long roller chain or the like is shortened when the rotating disk is not rotating, and is not only easy to attach to and remove from the cylinder, but also extends when rotating and is treated by a processing tool such as a brush attached to the tip. The cylindrical body inner surface processing capability such as scraping is remarkably improved, and an excellent effect that uniform and satisfactory processing can be performed is exhibited.
For this reason, even if the inner circumference of the cylinder is not a perfect circle, even if the inner diameter slightly varies in the length direction, or even if there are some irregularities, the entire surface can be processed uniformly.
また、内径が多少異なる筒体に対しても、部品交換なしで処理できる。そして、部品交換あるいは部品調整によってより広範囲な内径差の筒体を処理することができる。
さらに、回転盤を偶数段設け、各回転盤をたがいに逆方向に回転させることで、各回転盤は横ぶれが起こり難く安定操業できるとともに、筒体内面の同一箇所を複数回たがいに逆方向に摺動させることができ、擦削等のより優れた処理効果が発揮される。
アスベスト等の比較的軟質な表層を除去するにあたり、処理具としてワイヤブラシ等を使用することにより、コンクリートや鋼等の筒体本体の擦削を抑制して表層を擦削除去することができる。
Further, it is possible to process a cylindrical body having a slightly different inner diameter without replacing parts. A cylinder with a wider range of inner diameter differences can be processed by component replacement or component adjustment.
In addition, by providing an even number of turntables and rotating each turntable in the reverse direction, each turntable is less likely to sway and can be stably operated, and the same location on the inner surface of the cylinder can be turned in multiple directions. It can be slid, and more excellent treatment effects such as abrasion are exhibited.
In removing a relatively soft surface layer such as asbestos, by using a wire brush or the like as a processing tool, the surface layer can be scraped away while suppressing the abrasion of the cylindrical body such as concrete or steel.
図1〜図5に、処理具としてブラシ2、伸縮体としてローラチェーン3、弾性体としてコイルバネ8を使用した本発明例を示す。
図1(a)のように、回転盤1の周縁にローラチェーン3等の伸縮体を周方向等間隔に複数本配設している。この例では、可変長継手13を用いて120°間隔に3本配設している。
各ローラチェーン3の先端には、ブラシ2等の処理具を装着している。そして、各ローラチェーン3は、図2,図3のように、コイルバネ8等の弾性体を具備し、回転盤1の非回転時には、図1(b),図3のように縮短している。図2,図3の例では、可変長継手13を用いず、継手14で回転盤1に取付けている。
この回転盤1を、図1(a)のように、筒体軸12中心に回転させることで、各ローラチェーン3を伸長させて各ブラシ2を筒体10内面に摺動させ、周方向の内面処理を行う。そして、回転軸11の方向に移動させて筒体軸方向の内面処理を行う。
1 to 5 show examples of the present invention in which a brush 2 is used as a processing tool, a roller chain 3 is used as an elastic body, and a coil spring 8 is used as an elastic body.
As shown in FIG. 1A, a plurality of stretchable bodies such as a roller chain 3 are arranged at equal intervals in the circumferential direction on the periphery of the rotating disk 1. In this example, three variable length joints 13 are arranged at intervals of 120 °.
A processing tool such as a brush 2 is attached to the tip of each roller chain 3. Each roller chain 3 includes an elastic body such as a coil spring 8 as shown in FIGS. 2 and 3, and is shortened as shown in FIGS. 1B and 3 when the rotating disk 1 is not rotated. . 2 and 3, the variable length joint 13 is not used and the joint 14 is attached to the turntable 1.
As shown in FIG. 1A, the rotating disk 1 is rotated about the cylinder shaft 12 so that each roller chain 3 is extended, and each brush 2 is slid on the inner surface of the cylinder 10 so that the circumferential direction is increased. Perform internal treatment. And it is made to move to the direction of the rotating shaft 11, and the inner surface process of a cylindrical body axial direction is performed.
図2および図3は、ローラチェーン3にコイルバネ8を具備させた具体例である。図2は回転盤1の回転により伸長している状態の斜視図、図3は縮短している状態の平面図である。ローラチェーン3は、図2のように、各2枚の外プレート4と内プレート5をピン7で連結したもので、ピン7は2枚の内プレート5間のローラ6内を通している。
この例では、ローラチェーン3の先端に5個のブラシ2を連設している。コイルバネ8は、ローラチェーン3の各ローラ6の間に通し、バネの一端のフック9を回転盤1側端部のローラ6に、他端のフック9をブラシ2側端部のローラ6に、それぞれ掛渡している。コイルバネ8は引張りコイルバネである。回転盤1の非回転時には、図3および図1(b)のように、ローラチェーン3はコイルバネ8に引張られてジグザグに縮短し、回転による遠心力がコイルバネ8の引張り力より大になると、図2および図1(a)のように伸長する。
2 and 3 are specific examples in which a coil spring 8 is provided on the roller chain 3. FIG. 2 is a perspective view showing a state in which the turntable 1 is extended by the rotation of the turntable 1, and FIG. 3 is a plan view showing a state in which the turntable 1 is shortened. As shown in FIG. 2, the roller chain 3 is formed by connecting two outer plates 4 and an inner plate 5 with pins 7, and the pins 7 pass through the rollers 6 between the two inner plates 5.
In this example, five brushes 2 are connected to the tip of the roller chain 3. The coil spring 8 is passed between the rollers 6 of the roller chain 3, and the hook 9 at one end of the spring is connected to the roller 6 at the end of the rotating disk 1 and the hook 9 at the other end is connected to the roller 6 at the end of the brush 2. Each is handed over. The coil spring 8 is a tension coil spring. When the turntable 1 is not rotated, as shown in FIGS. 3 and 1B, the roller chain 3 is pulled by the coil spring 8 and contracted in a zigzag manner. When the centrifugal force due to the rotation becomes larger than the tensile force of the coil spring 8, It extends as shown in FIG. 2 and FIG.
ブラシ2の連設は、図2,図3の例では、ローラチェーン先端部の外プレート4と内プレート5合わせて5個それぞれにブラシを取付け、ピン7を連結部材として行っている。このほか、外プレート4にブラシを取付け、内プレート5およびピン7を連結部材としてもよい。また、内プレート5にブラシを取付け、外プレート4およびピン7を連結部材としてもよい。 In the example of FIGS. 2 and 3, the brushes 2 are connected to each of the five outer plates 4 and the inner plate 5 at the tip of the roller chain, and the pins 7 are used as connecting members. In addition, a brush may be attached to the outer plate 4 and the inner plate 5 and the pin 7 may be used as a connecting member. Further, a brush may be attached to the inner plate 5 and the outer plate 4 and the pin 7 may be used as a connecting member.
回転盤1の非回転時には、図1(b)のように、各ローラチェーン3は縮短しているので、筒体10への装置の着脱作業が容易である。
筒体10内で回転盤1を回転させると、図1(a)のように、先端にブラシ2を装着した各ローラチェーン3が伸長し、ブラシ2が筒体内面に圧接し摺動して、ブラッシングや擦削のような処理が行われる。
そして、回転盤1を回転軸11の方向に移動させることで、筒体10の長さ方向の内面処理が行われる。
When the turntable 1 is not rotated, each roller chain 3 is contracted as shown in FIG. 1B, so that the device can be easily attached to and detached from the cylinder 10.
When the turntable 1 is rotated in the cylindrical body 10, as shown in FIG. 1 (a), each roller chain 3 with the brush 2 attached to the tip extends, and the brush 2 slides in pressure contact with the inner surface of the cylindrical body. A process such as brushing or abrasion is performed.
And the inner surface process of the length direction of the cylinder 10 is performed by moving the turntable 1 to the direction of the rotating shaft 11. FIG.
回転盤1の回転により充分な遠心力が作用すると、図1(a)のように、ローラチェーン3の先端に取付けたブラシ2は所要数、本例では5個が全て筒体内面に圧接し、擦削等の処理能力が著しく向上する。コイルバネ8を取付けない場合は、後述実施例のように、回転数を最大にしても、ローラチェーン3側のブラシ2(No.5)が筒体内面に圧接しないのに対し、コイルバネ8を取付けた場合は同条件で全てのブラシ2が圧接し、充分な圧接力で摺動する。
このため、筒体10の内周が真円でなくても、長さ方向に内径が変動していても、また多少の凹凸があっても、ブラシ2は所要の充分な圧接力で全面を摺動し、筒体内面を全面均一に処理することができる。
When sufficient centrifugal force is applied by the rotation of the turntable 1, as shown in FIG. 1 (a), the required number of brushes 2 attached to the tip of the roller chain 3 is pressed against the inner surface of the cylindrical body in this example. , Processing ability such as abrasion is remarkably improved. When the coil spring 8 is not attached, the brush 2 (No. 5) on the roller chain 3 side is not pressed against the inner surface of the cylindrical body even when the number of rotations is maximized, as will be described later. In this case, all the brushes 2 are in pressure contact under the same conditions, and slide with sufficient pressure contact force.
For this reason, even if the inner circumference of the cylinder 10 is not a perfect circle, the inner diameter fluctuates in the length direction, or there are some irregularities, the brush 2 can be applied to the entire surface with the required sufficient pressure contact force. It slides and the inner surface of the cylindrical body can be uniformly treated.
また、別の筒体10を処理する場合、内径が多少異なるものに対しても、部品交換なしで処理できる。必要に応じて図1(a)および(b)の可変長継手13を調整することで、より広範囲な内径差の筒体を処理することができる。
可変長継手13は、例えば図4のようになっている。調整バー16と支持バー17を連結片20で連結し、調整バー16にはスライドバー15を入れ子式に取付けて、スライドバー15の長さ方向に設けた複数の調整孔18の何れかを調整バー16とピン19で固定することにより長さ可変にしている。調整バー16と支持バー17を、それぞれ連結片21と継手14で回転盤1に取付け、スライドバー15の先端にローラチェーン3を取付けている。
Moreover, when processing another cylindrical body 10, even if the inner diameter is slightly different, it can be processed without replacement of parts. By adjusting the variable length joint 13 shown in FIGS. 1A and 1B as necessary, it is possible to process a cylindrical body having a wider inner diameter difference.
The variable length joint 13 is, for example, as shown in FIG. The adjustment bar 16 and the support bar 17 are connected by a connecting piece 20, and a slide bar 15 is attached to the adjustment bar 16 in a nested manner to adjust any of a plurality of adjustment holes 18 provided in the length direction of the slide bar 15. The length is made variable by fixing with the bar 16 and the pin 19. The adjustment bar 16 and the support bar 17 are attached to the rotating disk 1 by the connecting piece 21 and the joint 14, respectively, and the roller chain 3 is attached to the tip of the slide bar 15.
回転盤1の周縁にローラチェーン3等の伸縮体を配設するには、可変長継手13に替えて図2,図3のような継手14を用いることもできる。
また、ローラチェーン3や可変長継手13を回転盤1の周縁に直接取付けることもできる。例えば図5のように、回転盤1の周縁に溝22を設けておき、溝22内にローラチェーン3の内プレート5を嵌め込み、ボルト24あるいはピンで止める。回転盤1の表面からボルトヘッド25あるいはピンヘッドが出ないように、ヘッド穴23を深めにしておくことで、回転盤1の表面を広く使える。可変長継手13を取付けるときは、図4に示す調整バー16および支持バー17を溝22内に嵌め込み、同様にする。
In order to dispose the expansion / contraction body such as the roller chain 3 around the periphery of the rotating disk 1, a joint 14 as shown in FIGS. 2 and 3 can be used instead of the variable length joint 13.
Further, the roller chain 3 and the variable length joint 13 can be directly attached to the periphery of the rotating disk 1. For example, as shown in FIG. 5, a groove 22 is provided on the periphery of the rotating disk 1, and the inner plate 5 of the roller chain 3 is fitted into the groove 22 and is fastened with a bolt 24 or a pin. By making the head hole 23 deep so that the bolt head 25 or the pin head does not protrude from the surface of the rotating disk 1, the surface of the rotating disk 1 can be used widely. When the variable length joint 13 is attached, the adjustment bar 16 and the support bar 17 shown in FIG.
伸縮体としては、ローラチェーン3のほか、各種チェーンや鎖などを採用することもできる。また、図6のようなアンテナタイプとすることもできる。図6では、角チューブ26,27,28を入れ子式に組み合わせたものが伸縮体である。これに、弾性体としてコイルバネ8を、先端の角チューブ26と後端の角チューブ28にそれぞれ設けたピン29に掛渡している。30はストッパで、中の角チューブ後端部外側と、外の角チューブ先端部内側とに設けた突起からなる。
先端の角チューブ26にブラシ2等の処理具を装着し、後端の角チューブ28を連結片21および継手14で回転盤1に取付けている。
ブラシ2は、ローラチェーンの内プレート5に取付け、外プレート4を連結部材として連設している。
In addition to the roller chain 3, various chains and chains can be adopted as the stretchable body. Moreover, it can also be set as the antenna type as shown in FIG. In FIG. 6, a telescopic body is a combination of the square tubes 26, 27, and 28 nested. The coil spring 8 is stretched over the pins 29 provided on the front end square tube 26 and the rear end square tube 28 as elastic bodies. Reference numeral 30 denotes a stopper, which is composed of protrusions provided on the outer side of the rear end portion of the inner square tube and the inner side of the outer end portion of the outer square tube.
A treatment tool such as a brush 2 is attached to the front end square tube 26, and a rear end square tube 28 is attached to the turntable 1 with a connecting piece 21 and a joint 14.
The brush 2 is attached to the inner plate 5 of the roller chain, and the outer plate 4 is connected as a connecting member.
弾性体としては、コイルバネ8のほか、ゴム製などの弾性ロープなどを採用することもできる。
処理態様としては、擦削のほか、様々なものが可能である。例えば、切削、研削、研磨、清掃などを行うことができ、各処理態様と対象筒体に適した処理具を採用することができる。
As the elastic body, in addition to the coil spring 8, an elastic rope made of rubber or the like may be employed.
In addition to scraping, various processing modes are possible. For example, cutting, grinding, polishing, cleaning, and the like can be performed, and a processing tool suitable for each processing mode and the target cylinder can be employed.
処理具として、擦削には、前述のように、アスベストのような比較的軟質な表面層を擦削除去する場合はブラシ2が好適で、金属ワイヤ、砥粒入り硬質プラスチックなどの剛毛製が好ましい。
比較的硬質な表面の擦削や切削には、このほか、粗砥石、粗砥粒を付着させた布紙や不織布等を採用できる。切削には、ブラシ2の剛毛に替え、剃刀の2枚刃のようにして単数または複数の刃を取り付けたものも採用できる。
研削や研磨には、細砥石、細砥粒を付着させた布紙や不織布等を採用できる。
清掃には、比較的軟毛のブラシや刷毛が使用できる。その場合、各種プラスチック、シュロ製等も含め、対象筒体に応じた適正なものを採用する。また、洗剤を付着させた布や不織布等も採用できる。
As described above, the brush 2 is suitable for scraping and removing a relatively soft surface layer such as asbestos as a processing tool, and is made of bristle such as metal wire or hard plastic with abrasive grains. preferable.
In addition to the relatively hard surface scraping and cutting, a rough grindstone, cloth paper or non-woven fabric to which coarse abrasive grains are attached can be employed. For cutting, it is also possible to employ a brush attached with one or more blades like a two-blade blade instead of the bristles of the brush 2.
For grinding and polishing, a fine whetstone, cloth paper or non-woven fabric to which fine abrasive grains are attached can be used.
A relatively soft brush or brush can be used for cleaning. In that case, the appropriate one according to the target cylinder is adopted, including various plastics and made of palm. In addition, a cloth or a non-woven fabric to which a detergent is attached can be used.
また、本発明において、回転盤1を回転軸11の方向に偶数段設け、各回転盤1をたがいに逆方向に回転させることで、より優れた効果が発揮される。すなわち、各回転盤1は横ぶれが起こり難く、安定して操業できるとともに、筒体1内面の同一箇所を複数回たがいに逆方向に摺動させることができ、擦削等のより優れた処理効果が発揮される。
回転盤を2段に設けて、たがいに逆方向に回転させる機構の例を図7に示す。本例は、本発明者が先に提案している特願2006−111673によるものである。
Further, in the present invention, the rotating disk 1 is provided with an even number of stages in the direction of the rotating shaft 11, and the rotating disk 1 is rotated in the reverse direction according to the rotating disk 1, thereby exhibiting more excellent effects. That is, each turntable 1 is less likely to sway, can be operated stably, and can slide in the same direction on the inner surface of the cylinder 1 in a plurality of opposite directions, so that more excellent processing such as scraping can be performed. The effect is demonstrated.
FIG. 7 shows an example of a mechanism in which a rotating disk is provided in two stages and rotates in the opposite direction. This example is based on Japanese Patent Application No. 2006-111673 previously proposed by the present inventor.
図7において、ドーナツ型回転盤31,32をたがいに平行に設け、間に3個の駆動輪33を、両回転盤31および32に接触させて120°間隔で設けている。3個の各駆動輪33の車軸は、両回転盤31および32に平行で、ギアボックス34内にて回転軸11と傘歯車で歯合して駆動される。ドーナツ型回転盤31の上には3個の押え輪35が、ドーナツ型回転盤32の下には3個の押え輪36が、それぞれ120°間隔で設けてある。押え輪35の車軸は押え盤37に、押え輪36の車軸は押え盤38に、それぞれ軸支され、非駆動で自在に回転する。各駆動輪33および各押え輪35,36にはタイヤが装着されている。 In FIG. 7, donut-type rotary disks 31 and 32 are provided in parallel with each other, and three drive wheels 33 are provided at intervals of 120 ° in contact with both rotary disks 31 and 32. The axles of each of the three drive wheels 33 are parallel to both of the rotary disks 31 and 32 and are driven by meshing with the rotary shaft 11 and the bevel gear in the gear box 34. Three presser wheels 35 are provided above the donut-type rotary disk 31 and three presser wheels 36 are provided below the donut-type rotary disk 32 at intervals of 120 °. The axle of the presser wheel 35 is pivotally supported by the presser plate 37 and the axle of the presser wheel 36 is pivotally supported by the presser disc 38, and rotates freely without being driven. Tires are mounted on the drive wheels 33 and the presser wheels 35 and 36.
押え盤37の上方にはフランジ40、押え盤38の下方にはフランジ41がそれぞれ配され、両者を3本の支柱42で支持している。3本の支柱42は、両フランジ40,41の面から見て正三角形の頂点の位置に配され、押え盤37,38およびギアボックス34に穿設された3個の貫通孔を通し、ドーナツ型回転盤31,32の中空部を通している。フランジ40と押え盤37の間、およびフランジ41と押え盤38の間では、各支柱42をスプリング43に通して、押え盤37をドーナツ型回転盤31側に、押え盤38をドーナツ型回転盤32側にそれぞれ押し付けている。 A flange 40 is disposed above the press plate 37 and a flange 41 is disposed below the press plate 38, and both are supported by three columns 42. The three struts 42 are arranged at the positions of the apexes of an equilateral triangle when viewed from the surfaces of the two flanges 40 and 41, and pass through the three through holes formed in the presser plates 37 and 38 and the gear box 34, and the donuts. It passes through the hollow portions of the mold turntables 31 and 32. Between the flange 40 and the presser board 37, and between the flange 41 and the presser board 38, the respective struts 42 are passed through the springs 43, so that the presser board 37 is on the donut type rotary board 31 side and the presser board 38 is on the donut type rotary board. Each side is pressed to 32 side.
回転軸11は、フランジ40および押え盤37の中心部に穿設された貫通孔を通し、ドーナツ型回転盤31の中空部を通し、ギアボックス34内で傘歯車に固定されている。そして、モータ44等の回転機構に接続されている。
ドーナツ型回転盤31および32の中空部には、内周に接して3個の回転輪39が回転自在に設けてある。ドーナツ型回転盤31内の回転輪39は、軸を押え盤37とギアボックス34で支持し、ドーナツ型回転盤32内の回転輪39は、軸を押え盤38とギアボックス34で支持している。
The rotary shaft 11 is fixed to the bevel gear in the gear box 34 through the flange 40 and a through hole formed in the center of the presser plate 37, through the hollow portion of the donut-type rotary plate 31. Then, it is connected to a rotation mechanism such as a motor 44.
Three rotating wheels 39 are rotatably provided in contact with the inner periphery in the hollow portions of the donut-shaped rotating disks 31 and 32. The rotating wheel 39 in the donut-shaped rotating disk 31 supports the shaft by a presser board 37 and a gear box 34, and the rotating wheel 39 in the donut-shaped rotating disk 32 supports the shaft by a presser board 38 and a gear box 34. Yes.
回転軸11を回転させると、3個の駆動輪33が回転し、駆動輪33に押し付けられているドーナツ型回転盤31および32が、たがいに逆方向に回転する。ドーナツ型回転盤31を押えている押え輪35、およびドーナツ型回転盤32を押えている押え輪36も、それぞれ回転する。このとき、両回転盤31および32は、回転輪39によりセンタリングされる。押え盤37,38およびギアボックス34は回転しない。 When the rotating shaft 11 is rotated, the three driving wheels 33 rotate, and the donut-shaped rotating disks 31 and 32 pressed against the driving wheels 33 rotate in opposite directions. The presser wheel 35 holding the donut-type rotary disk 31 and the presser ring 36 holding the donut-type rotary disk 32 also rotate. At this time, the two rotating disks 31 and 32 are centered by the rotating wheel 39. The pressers 37 and 38 and the gear box 34 do not rotate.
ドーナツ型回転盤31および32の外周縁に、図1〜図3に示すように、ブラシ2等の処理具を先端に装着したローラチェーン3等の伸縮体を、コイルバネ8等の弾性体を具備させて取付けることで、煙突内面のアスベスト層除去等の擦削処理等をより効果的に行うことができる。
処理作業に際しては、ブラシ等を取り付けた図7の装置をワイヤ等で筒体内に吊り、クレーンやウインチ等で上下移動させる。
As shown in FIGS. 1 to 3, the outer peripheral edges of the donut-shaped rotating disks 31 and 32 are provided with a telescopic body such as a roller chain 3 having a processing tool such as a brush 2 attached to its tip, and an elastic body such as a coil spring 8. By attaching them, it is possible to more effectively perform a scraping process such as removal of the asbestos layer on the inner surface of the chimney.
At the time of processing, the apparatus shown in FIG. 7 to which a brush or the like is attached is suspended in a cylinder with a wire or the like and moved up and down with a crane or a winch.
2段に設けたドーナツ型回転盤31,32がたがいに逆方向に回転するので、両回転盤31,32は横ぶれが起こり難く、安定して操業できる。また、筒体10内面の同一箇所を2回たがいに逆方向に摺動させることができ、擦削等のより優れた処理効果が発揮される。
また、ドーナツ型回転盤31,32を複数対連結することで、4段以上の各回転盤をたがいに逆方向に回転させることができる。
Since the donut-shaped rotating disks 31 and 32 provided in two stages rotate in the opposite direction, the rotating disks 31 and 32 are less likely to be shaken and can be operated stably. Moreover, the same location of the inner surface of the cylinder 10 can be slid in the opposite direction twice, and a more excellent processing effect such as abrasion is exhibited.
Further, by connecting a plurality of pairs of donut-shaped rotating disks 31 and 32, each rotating disk having four or more stages can be rotated in the reverse direction.
また、ローラチェーン3等をドーナツ型回転盤31および32の外周縁に取付ける際、図5のように、回転盤1周縁の溝22内に嵌め込むことで、両回転盤31,32の外径を、駆動輪33および押え輪35,36が作用する範囲で小さくできるので、装置小型化により、小径煙突等の小径筒体にも対応できる。 Further, when the roller chain 3 and the like are attached to the outer peripheral edges of the donut-shaped rotary disks 31 and 32, the outer diameters of both rotary disks 31 and 32 are fitted by fitting into the grooves 22 on the peripheral edge of the rotary disk 1 as shown in FIG. Can be reduced within the range in which the drive wheel 33 and the presser wheels 35 and 36 are actuated, so that it is possible to cope with a small-diameter cylinder such as a small-diameter chimney by downsizing the device.
(1)煙突を想定した模型を使用して本発明の効果を検証した。
図7に示す装置のドーナツ型回転盤31および32の外周縁に、図2に示すように、ブラシ2を装着したローラチェーン3を継手14により取付け、内径1500mmφの筒体内に宙吊りにして内面の擦削を行った。
ドーナツ型回転盤31および32の外周直径は240mmφで、3本のローラチェーン3を120°間隔で取り付けた。回転は、図7のモータ44の位置に市販の減速機付モータを取付けて行った。ローラチェーン3は外プレート4と内プレート5を合わせて25個からなり、先端部の合わせて5個に硬鋼製ワイヤのブラシを装着してブラシ2とした。
本発明例として、ローラチェーン3に引張りコイルバネ8を、図2のように、ブラシ2側端部のローラ6と回転盤1側端部のローラ6の間に掛渡したものを使用し、比較例として、コイルバネ8なしのものを使用した。
(1) The effect of the present invention was verified using a model assuming a chimney.
As shown in FIG. 2, a roller chain 3 fitted with the brush 2 is attached to the outer peripheral edges of the donut-shaped rotary disks 31 and 32 of the apparatus shown in FIG. 7 by a joint 14 and suspended in a cylindrical body having an inner diameter of 1500 mmφ. Scraping was performed.
The outer diameters of the donut-shaped rotating disks 31 and 32 were 240 mmφ, and three roller chains 3 were attached at intervals of 120 °. The rotation was performed by attaching a commercially available motor with a reduction gear at the position of the motor 44 in FIG. The roller chain 3 is composed of 25 pieces of the outer plate 4 and the inner plate 5, and a brush of hard steel wire is attached to the five of the tip portions to make the brush 2.
As an example of the present invention, as shown in FIG. 2, a tension coil spring 8 is stretched between a roller 6 at the brush 2 side end and a roller 6 at the end of the rotating disk 1 as shown in FIG. As an example, the one without the coil spring 8 was used.
ドーナツ型回転盤31,32の回転数を、減速機付モータの印加電圧を変えて変化させ、5個のブラシ2(No.1〜No.5)と煙突内面の接触状況を観察した。ブラシ2が確実に接触した部位は擦削された。表1に、モータ印加電圧および回転数とブラシ接触状況の関係をまとめて示す。
コイルバネ無の比較例では、印加電圧最大の60Vで回転数を最大の75rpmにしても、ローラチェーン側端部のNo.5ブラシが接触せず、擦削は不十分であった。これに対して、本発明例ではコイルバネの顕著な効果がみられ、印加電圧50V,回転数65rpmでもNo.1〜No.5の全ブラシが接触し、充分な擦削が得られた。
The number of rotations of the donut-shaped rotary disks 31 and 32 was changed by changing the voltage applied to the motor with a speed reducer, and the contact state between the five brushes 2 (No. 1 to No. 5) and the chimney inner surface was observed. The part where the brush 2 was reliably contacted was scraped. Table 1 summarizes the relationship between the motor applied voltage and the number of rotations and the brush contact status.
In the comparative example without a coil spring, even when the applied voltage was 60 V and the rotation speed was 75 rpm, the No. 5 brush at the end of the roller chain was not in contact and the abrasion was insufficient. On the other hand, in the example of the present invention, a remarkable effect of the coil spring was observed, and all brushes No. 1 to No. 5 were in contact with each other even when the applied voltage was 50 V and the rotation speed was 65 rpm, and sufficient abrasion was obtained.
(2)実際の煙突について、内面のアスベスト層を擦削除去した。
煙突は、内径650mmφのコンクリート製で、50mm厚さのアスベスト層が形成されている。アスベスト層の内径は550mmφである。図7のような装置のドーナツ型回転盤31,32に、図1のように可変長継手13を使用してローラチェーン3を取付け、先端に5連の硬鋼製ワイヤブラシ2を装着した。回転は市販の減速機付モータで行い、装置をクレーンで上下移動させた。
作業終了後、煙突を縦割りして内面を観察した結果、アスベスト層は確実に除去されてコンクリート面が露出していた。コンクリート面の窪み内も除去されていた。コンクリート面にはブラシの跡は見られるものの、擦削は抑制されていることが明らかであった。
(2) About the actual chimney, the asbestos layer on the inner surface was scraped off.
The chimney is made of concrete having an inner diameter of 650 mmφ, and an asbestos layer having a thickness of 50 mm is formed. The inner diameter of the asbestos layer is 550 mmφ. As shown in FIG. 1, the roller chain 3 is attached to the donut-type rotary disks 31 and 32 of the apparatus as shown in FIG. 7 using the variable length joint 13 and the five hard steel wire brushes 2 are attached to the tip. The rotation was performed with a commercially available motor with a reduction gear, and the device was moved up and down with a crane.
After completion of the work, the chimney was vertically divided and the inner surface was observed. As a result, the asbestos layer was reliably removed and the concrete surface was exposed. The inside of the concrete surface was also removed. Although the traces of the brush were seen on the concrete surface, it was clear that the abrasion was suppressed.
1:回転盤 2:ブラシ
3:ローラチェーン 4:外プレート
5:内プレート 6:ローラ
7:ピン 8:コイルバネ
9:フック 10:筒体
11:回転軸 12:筒体軸
13:可変長継手 14:継手
15:スライドバー 16:調整バー
17:支持バー 18:調整孔
19:ピン 20,21:連結片
22:溝 23:ヘッド穴
24:ボルト 25:ボルトヘッド
26,27,28:角チューブ 29:ピン
30:ストッパ 31,32:ドーナツ型回転盤
33:駆動輪 34:ギアボックス
35,36:押え輪 37,38:押え盤
39:回転輪 40,41:フランジ
42:支柱 43:スプリング
44:モータ
1: rotating plate 2: brush 3: roller chain 4: outer plate 5: inner plate 6: roller 7: pin 8: coil spring 9: hook 10: cylindrical body 11: rotating shaft 12: cylindrical shaft 13: variable length joint 14 : Joint 15: Slide bar 16: Adjustment bar 17: Support bar 18: Adjustment hole 19: Pin 20, 21: Connection piece 22: Groove 23: Head hole 24: Bolt 25: Bolt head 26, 27, 28: Square tube 29 : Pin 30: Stopper 31 and 32: Donut type rotating board 33: Driving wheel 34: Gear box 35 and 36: Pressing wheel 37 and 38: Pressing board 39: Rotary wheel 40 and 41: Flange 42: Prop 43: Spring 44: motor
Claims (4)
各ローラチェーンの伸縮体の先端から複数個のプレートには、それぞれブラシ処理具が装着されており、
ローラチェーンの各ローラ間に弾性体として引張りコイルバネを通し、該バネの一端のフックを回転盤側端部のローラに、
該バネの他端のフックをブラシ処理具が装着された複数個のプレートのうち、回転盤に最も近いプレートの回転盤に近い端部のローラにそれぞれ掛渡すことで、回転盤の非回転時にはローラチェーンの伸縮体が縮短するように構成されており、
回転盤を筒体軸中心に回転させることで各伸縮体を遠心力で伸長させると、各ローラチェーンの伸縮体の先端から複数個のプレートに装着されている各ブラシ処理具が、ほぼ均等に筒体内面に圧接してブラッシングしつつ筒体内面を摺動し、
且つ、回転盤を筒体軸方向に移動させることで筒体内面全体を確実に均一にブラッシングすることを特徴とする筒体の内面処理方法。 A pin 7 which penetrates the roller and serves as a roller support shaft at the portion where the inner and outer plate end portions overlap each other between the two inner plates facing each other with the roller interposed therebetween and the two outer plates sandwiching the inner plate. A plurality of roller chain expansion / contraction bodies that are repeatedly extended in the form connected to each other are arranged at equal intervals in the circumferential direction on the periphery of the rotating disk,
A brush processing tool is attached to each of the plurality of plates from the tip of the elastic body of each roller chain,
A tension coil spring is passed as an elastic body between the rollers of the roller chain, and a hook at one end of the spring is attached to the roller at the end on the rotating disk side.
By hooking the hook at the other end of the spring to the roller at the end closest to the rotating disk of the plate closest to the rotating disk among the plurality of plates mounted with the brush processing tool, when the rotating disk is not rotating It is configured so that the elastic body of the roller chain contracts,
When each telescopic body is extended by centrifugal force by rotating the turntable around the cylinder axis, each brush treatment tool attached to a plurality of plates from the tip of each roller chain telescopic body is almost evenly distributed. While sliding against the inner surface of the cylinder while brushing,
And the inner surface processing method of a cylinder characterized by brushing the whole cylinder inner surface reliably uniformly by moving a rotary disk to a cylinder axial direction.
各ローラチェーンの伸縮体の先端から複数個のプレートには、それぞれブラシ処理具が装着されており、ローラチェーンの各ローラ間に弾性体として引張りコイルバネを通し、該バネの一端のフックを回転盤側端部のローラに、該バネの他端のフックをブラシ処理具が装着された複数個のプレートのうち、回転盤に最も近いプレートの回転盤に近い端部のローラにそれぞれ掛渡すことで、回転盤の非回転時にはローラチェーンの伸縮体が縮短するように構成されており、
回転盤を筒体軸中心に回転させることで各伸縮体を遠心力で伸長させると、各ローラチェーンの伸縮体の先端から複数個のプレートに装着されている各ブラシ処理具が、ほぼ均等に筒体内面に圧接してブラッシングしつつ筒体内面を摺動し、
且つ、回転盤を筒体軸方向に移動させることで筒体内面全体を確実に均一にブラッシングできるように構成されていることを特徴とする筒体の内面処理装置。 A pin 7 which penetrates the roller and serves as a roller support shaft at the portion where the inner and outer plate end portions overlap each other between the two inner plates facing each other with the roller interposed therebetween and the two outer plates sandwiching the inner plate. A plurality of roller chain expansion / contraction bodies that are repeatedly extended in the form connected to each other are arranged at equal intervals in the circumferential direction on the periphery of the rotating disk,
A plurality of plates are mounted with a brush processing tool from the tip of each roller chain expansion / contraction body, a tension coil spring is passed as an elastic body between each roller of the roller chain, and a hook at one end of the spring is attached to the rotating disk. By hooking the hook at the other end of the spring to the roller at the end of the plate that is closest to the turntable of the plate closest to the turntable, among the plurality of plates mounted with the brush processing tool, The roller chain expansion and contraction is shortened when the turntable is not rotating.
When each telescopic body is extended by centrifugal force by rotating the turntable around the cylinder axis, each brush treatment tool attached to a plurality of plates from the tip of each roller chain telescopic body is almost evenly distributed. While sliding against the inner surface of the cylinder while brushing,
An inner surface treatment apparatus for a cylindrical body, wherein the entire inner surface of the cylindrical body can be surely and uniformly brushed by moving the rotating disk in the axial direction of the cylindrical body.
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