JP2007319757A - Device for surface preparation of inner surface of piping body - Google Patents

Device for surface preparation of inner surface of piping body Download PDF

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JP2007319757A
JP2007319757A JP2006151616A JP2006151616A JP2007319757A JP 2007319757 A JP2007319757 A JP 2007319757A JP 2006151616 A JP2006151616 A JP 2006151616A JP 2006151616 A JP2006151616 A JP 2006151616A JP 2007319757 A JP2007319757 A JP 2007319757A
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main body
keren
kelen
apparatus main
drive shaft
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Kotaro Azuma
幸太郎 東
Shigeru Fukumoto
茂 福本
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AZUMA TOSO KK
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AZUMA TOSO KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for surface preparation of the inner surface of a piping body which can certainly and effectively perform surface preparation work for the inner surface of a steel pipe used for a steel tower main pillar, can be reduced in weight owing to its simple structure, and can be taken to a working place which is restricted in carrying in mechanical equipment and materials because of its handiness for carrying manually. <P>SOLUTION: The whole device in a hanging state is inserted into a piping body, a device main body 10 is positioned at the center inside the piping body by expanding a main body supporting part 40, and when a surface preparation operating part 20 is rotated, a large number of wire tip ends expand in axial directions and diameter directions and come into contact with the overall inner surface of the piping body. Therefore, even if there are steps in the piping body, the surface preparation work can be efficiently performed in certain contact with the wire tip ends, the weight of the device can be reduced owing to its extremely simple structure, and the device is handy for carrying to operate without any problem in a place which requires working equipment and materials to be brought in manually. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、管体に挿入されて管体内面の錆等を除去するいわゆるケレン作業を行う管体内面ケレン用装置に関し、特に鉄塔の主柱等をなす立設状態の管体に対応し、簡略且つ軽量化された構造で高所等の作業性の劣る使用環境においても取扱い性に優れ、確実にケレン作業を実施可能な管体内面ケレン用装置に関する。   The present invention relates to an apparatus for a tubular inner surface kelen that performs so-called keren work that is inserted into the tubular body to remove rust and the like on the inner surface of the tubular body, and particularly corresponds to a standing tubular body that forms a main pillar of a steel tower, The present invention relates to a tubular inner surface kelen device that has a simple and light weight structure and is excellent in handleability even in a use environment where workability is inferior, such as a high place.

送電線や通信線の高所への架空支持の他、無線通信の送信、中継用アンテナ設置等の目的で使用される鉄塔は、主柱として鋼管を連結して用いる構造とされるのが一般的であり、十分な強度及び耐久性を有しているが、長年の使用を経て主柱頂部や鋼管連結部分に生じた隙間、及び最下部の水抜き孔等から雨水等が浸入し、鋼管内側からの腐食を招く場合もあり、これが強度の低下をもたらすことから、設置して所定期間経過の後にメンテナンス作業を行うことが奨励されている。こうした鋼管を含む構造材鉄部に対するメンテナンスとしては、ケレン作業を行って錆等を除去した後、錆止め用の塗装を行う手法が一般的に採用されている。   In addition to aerial support to high places of transmission lines and communication lines, steel towers used for the purpose of wireless communication transmission, installation of relay antennas, etc. are generally structured with steel pipes connected as main pillars It has a sufficient strength and durability, but after many years of use, rainwater, etc. infiltrated from the gaps formed at the top of the main column and the steel pipe connecting part and the drain hole at the bottom, etc. In some cases, corrosion from the inside may be caused, and this causes a decrease in strength. Therefore, it is encouraged to perform maintenance work after a predetermined period of time after installation. As a maintenance for such a structural steel part including a steel pipe, a method is generally employed in which rust and the like are applied after removing the rust by performing a keren operation.

このうち、鉄塔主柱をなす鋼管の外側については、自動化された手法が、特開２００５−２１１８８４号公報等で提案されているが、鉄塔の主柱内面については、同様のものはなく、例えば、鉄塔下部等にある小孔から管体内に器具を挿入して各種作業を行うといった、主に作業者の手作業による手法が、特開２００３−２００１２４号公報、特開２００５−１６１２９４号公報等で提案されている。   Among these, an automated method has been proposed in Japanese Patent Application Laid-Open No. 2005-211884 for the outer side of the steel pipe forming the main tower column, but there is no similar thing on the inner surface of the main column of the steel tower. In addition, a technique manually performed by an operator such as performing various operations by inserting an instrument into a tubular body through a small hole in a lower part of a steel tower is disclosed in JP 2003-200124 A, JP 2005-161294 A, and the like. Proposed in

この他、鉄塔でない一般的な鋼管内のケレン作業や塗装作業については、専用の装置を用いて自動化した各種の手法が多数提案されており、例えば、特開２００２−８６０９６号公報や、特開２００５−２３８３４５号公報に開示されるものがある。
特開２００５−２１１８８４号公報 特開２００３−２００１２４号公報 特開２００５−１６１２９４号公報 特開２００２−８６０９６号公報 特開２００５−２３８３４５号公報 In addition to this, as for kelen work and painting work in a general steel pipe that is not a steel tower, a number of various methods automated using a dedicated device have been proposed. For example, JP 2002-86096 A and JP There are some which are indicated by 2005-238345 gazette.
Japanese Patent Laying-Open No. 2005-211884 JP 2003-200124 A JP 2005-161294 A JP 2002-86096 A JP 2005-238345 A

従来のケレン作業等の手法は前記各特許文献に示されるものとなっていたが、鉄塔主柱をなす鋼管の内面に対する従来の作業手法としては、前記特許文献２、３に示すように、鉄塔下部等にある小孔から鋼管内に器具を挿入するといった作業者の手作業に頼る他なかったことから、作業能率が悪く、作業に手間が掛っていた。また、鋼管外部から小孔を通じた器具操作で鋼管内部に対する作業を行うため、作業に制約が多く、孔近傍しか作業が行えないなど、鋼管内部各部に対し適切にケレン作業等を実行することが難しく、こうした従来の手法では、鉄塔主柱に対し実効性のあるメンテナンスを効率的に進めることはできないという課題を有していた。   Conventional techniques such as keren work have been shown in the above-mentioned patent documents, but as conventional work techniques for the inner surface of a steel pipe constituting the main pillar of a steel tower, Since there was no other way to rely on the operator's manual work such as inserting the instrument into the steel pipe through a small hole in the lower part etc., the work efficiency was poor and the work was laborious. In addition, since the work inside the steel pipe is performed by operating the instrument through the small hole from the outside of the steel pipe, there are many restrictions on the work and the work can be performed only near the hole. It is difficult, and such a conventional method has a problem that effective maintenance cannot be efficiently performed on the main pillar of the steel tower.

この他、前記特許文献４、５に示されるように、鉄塔でない一般的な鋼管内のケレン作業や塗装作業については、管内に挿入するタイプの装置を用いた各種の手法が多数提案されているものの、用いる装置の構成が複雑で高コストになる上、効率よく作業を行える能力を備える装置は大きく重量も大であり、且つ電力消費も大きく電源等付帯設備も大型化することとなり、山中などこうした機材の搬入や電源の確保が極めて困難な場所に設置されることの多い鉄塔に適用して作業を実施することは事実上不可能であるという課題を有していた。   In addition, as shown in Patent Documents 4 and 5, for various kelen work and painting work in a general steel pipe that is not a steel tower, various methods using a type of apparatus inserted into the pipe have been proposed. However, the configuration of the equipment used is complicated and expensive, and the equipment with the ability to work efficiently is large and heavy, and also consumes a lot of power and increases the size of auxiliary equipment such as power supplies. There was a problem that it was practically impossible to carry out the work by applying it to a steel tower that is often installed in a place where it is extremely difficult to carry in such equipment and secure a power source.

また、鉄塔の主柱など高さのある構造物は、鋼管を複数連結して構成されているが、用いられる鋼管は、強度やコストの関係から、高さ方向の位置が上になるほど小径とされるのが一般的であり、径の異なる二つの鋼管の連結部分には段差が生じ、鋼管間には管軸方向に直交する面が介在する状態となっている。このような鋼管連結部分に段差があるような対象物に対して、前記各特許文献に記載されるような従来のケレン作業に用いられる装置や器具は、ケレン作業の実施部位を作業対象面のうち管軸方向に直交する面に接触させることがその構造上難しいことから、作業を適切に実施することができないという課題を有していた。   In addition, a structure with a height such as a main pillar of a steel tower is configured by connecting a plurality of steel pipes, but the steel pipe used has a smaller diameter as the position in the height direction is higher due to strength and cost. In general, there is a step in the connecting portion of two steel pipes having different diameters, and a plane perpendicular to the pipe axis direction is interposed between the steel pipes. With respect to such an object where there is a step in the steel pipe connection part, devices and tools used in conventional keren work as described in each of the above-mentioned patent documents, the site where the work is carried out is the surface of the work object. Of these, it is difficult to make contact with a surface perpendicular to the tube axis direction because of its structure.

本発明は前記課題を解決するためになされたもので、鉄塔主柱をなす鋼管内面に対し確実且つ能率よくケレン作業が行えることに加え、簡略な構造で軽量化でき、人手による持運びが容易となって機材搬入に制約のあるような作業現場にも持込んで作業を実施できる管体内面ケレン用装置を提供することを目的とする。   The present invention has been made to solve the above-mentioned problems, and in addition to being able to perform keren work reliably and efficiently on the inner surface of the steel pipe forming the main tower pillar, it is possible to reduce the weight with a simple structure and to carry it easily by hand. Therefore, an object of the present invention is to provide an apparatus for inner surface kelen that can be carried into a work site where there are restrictions on carrying in equipment and can be carried out.

本発明に係る管体内面ケレン用装置は、管体内に挿入されて管体軸方向へ移動可能に牽引され、所定のケレン手段を前記管体内面に接触させてケレン動作を行わせつつ、管体軸方向に移動させて管体内面所定範囲に対するケレン作業を可能とする管体内面ケレン用装置において、立設された一又は複数連結状態の前記管体に対し、管体の最小内径部位を通過可能な外径の略円筒体として形成され、牽引用の索体を連結される装置本体部と、前記ケレン手段を一又は複数有して前記装置本体部の一端側に装置本体部の円筒軸と平行な軸周りに回転可能とされて配設されるケレン動作部と、前記装置本体部一端部に内蔵されて前記ケレン動作部を回転駆動する駆動部と、少なくとも前記装置本体部外径から前記管体の最大内径までの範囲で拡縮可能とされて装置本体部に周方向等間隔となる配置で複数配設される本体支持部とを備え、前記ケレン動作部が、前記駆動部の回転する駆動軸に連結される中心の連結部と、当該連結部に一又は複数組取付けられる前記ケレン手段としてのワイヤの集合体とを有し、当該ワイヤ集合体をなす複数のワイヤの長さを複数通りに異ならせると共に、各ワイヤ集合体が連結部に対し駆動軸中心を含む平面上で揺動自在として取付けられ、ケレン動作部回転時の遠心力に伴って各ワイヤ集合体が連結部側方へ略放射状に伸張し、且つ各ワイヤの先端部が回転軸方向の所定寸法範囲及び回転中心に対する径方向の所定寸法範囲へそれぞれ広がる状態となり、前記管体内にケレン動作部を下側として上方から挿入して管体軸方向に移動可能に吊支し、管体内のケレン作業対象箇所へ到達させた状態で、各本体支持部を管体内面に接触する拡大状態とし、装置本体部を管体内面から離隔させて管体内の略中心に位置させると共に、ケレン動作部を回転させて各ワイヤ集合体を管体内面に接触させるものである。   An apparatus for tubular inner surface kelen according to the present invention is inserted into a tubular body and pulled so as to be movable in the axial direction of the tubular body. In a tubular body inner surface kelen device that enables movement of the tubular body inner surface within a predetermined range by moving in the body axis direction, a minimum inner diameter portion of the tubular body is defined with respect to one or a plurality of the connected tubular bodies. A device main body formed as a substantially cylindrical body having an outer diameter that can be passed, and connected to a tow cord, and a cylinder of the device main body at one end of the device main body having one or a plurality of the above-mentioned kelen means A kelen operating part arranged to be rotatable around an axis parallel to the axis, a drive part built in one end of the apparatus main body to rotate the keren operating part, and at least the outer diameter of the apparatus main body Can be expanded or reduced in the range from the maximum inner diameter of the tube A plurality of main body support portions arranged at equal intervals in the circumferential direction in the apparatus main body portion, and the keren operating portion is connected to a drive shaft rotating by the drive portion; A wire assembly as the keren means attached to one or a plurality of sets to the connecting portion, and a plurality of wires constituting the wire assembly have different lengths, and each wire assembly It is attached to the connecting part so as to be swingable on a plane including the center of the drive shaft, and each wire assembly extends substantially radially to the side of the connecting part along with the centrifugal force when the keren operating part rotates, and each wire The tip part is in a state of expanding to a predetermined dimension range in the rotation axis direction and a predetermined dimension range in the radial direction with respect to the rotation center, and can be moved in the tube axis direction by inserting the kelen operating part into the tube body from below. Suspended and tubular With the main body support part in an expanded state in contact with the inner surface of the tubular body in a state where it has reached the kelen work target location, the apparatus main body part is separated from the inner surface of the tubular body and positioned at the approximate center of the tubular body, and the kelen operating part Is rotated to bring each wire assembly into contact with the inner surface of the tube body.

このように本発明によれば、管体内に上方から吊下げ状態の装置全体を挿入し、管体内の作業対象位置において、本体支持部を拡大させて装置本体部を管体内中心に位置させ、ケレン動作部を回転させると、多数のワイヤ先端が軸方向や径方向に広がった状態となってそれぞれ管体内面に接触可能であることにより、管体に段差、すなわち管軸方向に略直交するような面を介して管径が変化している箇所が存在していても、確実にワイヤ先端が接触してケレン作業を能率よく行うことができると共に、ケレン作業を実行する装置としては極めて簡略な構造で軽量化が図れ、鋼管製の鉄塔主柱が作業対象の場合においてこうした鉄塔が設けられることの多い山中など、作業機材を人手で現場まで運ぶ必要があるような箇所での作業に際しても、容易に持運んで問題なく装置を現場に搬入して作業を実施できる。   As described above, according to the present invention, the entire apparatus suspended from above is inserted into the pipe body, and at the work target position in the pipe body, the main body support section is enlarged to position the apparatus main body section at the center of the pipe body, When the Keren operation part is rotated, a large number of wire tips are spread in the axial direction and the radial direction, and can contact the inner surface of the tube body, so that the tube body is stepped, that is, substantially orthogonal to the tube axis direction. Even if there is a part where the pipe diameter is changing through such a surface, the wire tip can be surely contacted and the keren work can be efficiently performed, and the apparatus for performing the kelen work is extremely simple. Even in places where work equipment needs to be transported to the site manually, such as in the mountains where steel towers are often installed when the main pillars made of steel pipes are the target of work , It is carry the easily can be carried out work is carried into the field devices without any problems.

また、本発明に係る管体内面ケレン用装置は必要に応じて、前記ケレン動作部が、駆動部の駆動軸に対し着脱自在とされ、前記駆動部の駆動軸が、軸方向へ液体を流通可能に一部中空とされると共に、装置本体部における駆動軸の軸支機構が、駆動軸の回転を許容しつつ装置本体部内部側から駆動軸の中空部分に液体を漏れなく供給可能なロータリジョイント機構を兼ねて形成されてなり、前記装置本体部が、外部から塗料を圧送供給可能とする所定の供給管を接続可能とされ、前記駆動軸にケレン動作部に代えて塗料のノズルヘッド部を駆動軸方向と略直交する塗料吐出方向として取付け、前記装置本体部に供給管を介して塗料を圧送供給可能な状態とし、装置本体部から駆動軸を通じてノズルヘッド部に塗料を供給しつつ装置本体部に対しノズルヘッド部を回転させて、ノズルヘッド部から周囲各方向に塗料を吹付け可能とするものである。   Further, in the tubular body inner surface kelen device according to the present invention, the kelen operating part is detachable from the driving shaft of the driving part as required, and the driving shaft of the driving part circulates liquid in the axial direction. A rotary that can be partially hollowed, and the shaft support mechanism of the drive shaft in the apparatus main body allows the liquid to be supplied to the hollow portion of the drive shaft from the inside of the apparatus main body without leakage while allowing the rotation of the drive shaft. It is also formed as a joint mechanism, and the apparatus main body part can be connected to a predetermined supply pipe capable of pressure-feeding supply of paint from the outside, and a paint nozzle head part instead of a keren operating part on the drive shaft Is attached as a paint discharge direction substantially orthogonal to the drive shaft direction so that the paint can be pumped and supplied to the apparatus main body through a supply pipe, and the apparatus is supplied while supplying the paint from the apparatus main body to the nozzle head through the drive shaft. Paired with the main unit The nozzle head is rotated, and makes it possible only spray paint around each direction from the nozzle head unit.

このように本発明によれば、装置本体部及び駆動部を塗料の先端側への供給が可能な構造とすると共に、塗装用のノズルヘッド部を駆動軸に着脱自在に取付可能とし、ケレン動作部に代えてノズルヘッド部を駆動軸に取付け、管体内挿入状態でケレン動作部同様に回転させたノズルヘッド部に装置本体部及び駆動軸を経由して塗料を供給すると、ノズルヘッド部から管体内面へ塗料を均等に吹付けて塗装作業が行えることにより、ケレン作業の後、装置先端部品の交換と塗料の供給のみで管体内面に対する塗装作業にも対応させられ、別途塗装用の装置を用意せずに済み、鉄塔に対する作業など機材持運びの面で制約の多い現場についても問題なく作業対応でき、コストダウンも図れる上、ケレン作業同様の操作で適切に塗装作業を実施でき、作業性を向上させられる。   As described above, according to the present invention, the apparatus main body and the drive unit can be supplied to the front end side of the paint, and the nozzle head unit for painting can be detachably attached to the drive shaft. If the nozzle head unit is attached to the drive shaft instead of the nozzle and paint is supplied to the nozzle head unit rotated in the same manner as the Keren operation unit in the state of being inserted into the tube, the paint is supplied from the nozzle head unit to the tube. By spraying paint evenly on the inner surface of the body, it is possible to perform painting work on the inner surface of the tube body by simply replacing the tip part of the device and supplying the paint after the cleansing work. It is possible to work on the site where there are many restrictions in terms of carrying equipment such as work on a steel tower without problems, cost can be reduced, and painting work can be performed appropriately with the same operation as Keren work It is to improve the workability.

また、本発明に係る管体内面ケレン用装置は必要に応じて、前記本体支持部が、複数のリンク部材を組合わせたリンク機構とされ、所定のリンク部材を装置本体部収容状態から装置本体部外方への突出状態に至る範囲で可動として装置本体部の径方向における本体支持部寸法を拡縮可能とすると共に、前記所定のリンク部材と連動する別のリンク部材を所定動作方向に付勢して前記所定のリンク部材を装置本体部外方へ突出する向きへ動かすばねを配設されてなり、前記装置本体部内に、前記本体支持部をなすリンク機構を前記ばねの付勢力に抗して動作させ、前記所定のリンク部材を装置本体部に収容される向きへ動かす電動式の駆動手段を配設するものである。   Further, in the tubular body inner surface kelen device according to the present invention, the main body support portion is a link mechanism in which a plurality of link members are combined as necessary, and the predetermined link member is moved from the device main body portion housing state to the device main body. The main body support part dimension in the radial direction of the apparatus main body part can be expanded and contracted so that it can be moved in a range that extends to the outside of the part, and another link member interlocking with the predetermined link member is urged in a predetermined operation direction A spring that moves the predetermined link member in a direction that protrudes outward from the main body of the apparatus, and a link mechanism that forms the main body support portion is resisted against the biasing force of the spring in the main body of the apparatus. Electric drive means for moving the predetermined link member in a direction accommodated in the apparatus main body is disposed.

このように本発明によれば、装置本体部に対し本体支持部を拡縮させる機構が、管体内面に接触させる拡大方向についてはばねによる付勢力、管体内面から離す縮小方向については独立した駆動手段を用い、本体支持部で装置本体部を管体内中心に位置させる動作状態については、外部からの電力供給なしにばねの付勢力のみで維持可能であることにより、各作業時における装置の消費電力を小さく抑えられ、鉄塔に対する作業など制約の多い現場での動作用の電力供給の面で有利となり、バッテリや発電機等の電源装置として小容量で小型・軽量のものを使用できる。さらに、装置移動による管体内位置の変化に伴って本体支持部当接位置における管体内径が連続的あるいは段階的に変化する場合でも、ばねによる付勢で支持力を得ている本体支持部が内径変化に柔軟に追随して変形対応でき、作業を中断することもなくスムーズに継続して進められる。   As described above, according to the present invention, the mechanism for expanding and contracting the main body support portion with respect to the apparatus main body portion is biased by the spring in the expansion direction to be brought into contact with the inner surface of the tube, and independently driven in the reduction direction away from the inner surface of the tube. The operation state in which the main body of the apparatus is positioned at the center of the pipe body by means of the main body support section can be maintained only by the urging force of the spring without supplying power from the outside. The power can be kept small, which is advantageous in terms of power supply for operation in the field where there are many restrictions such as work on the steel tower, and a small-sized, lightweight power source device such as a battery or a generator can be used. Furthermore, even when the inner diameter of the tube body at the position where the main body support portion abuts changes continuously or stepwise as the position of the tube body changes due to the movement of the device, the main body support portion that obtains the support force by biasing by the spring is provided. It is possible to flexibly follow the inner diameter change and cope with deformation, and smoothly and continuously proceed without interruption.

また、本発明に係る管体内面ケレン用装置は必要に応じて、前記本体支持部のうち前記別のリンク部材の少なくとも一部が、強磁性体の素材で形成され、前記駆動手段が、前記本体支持部のうち前記別のリンク部材を、前記ばねにより付勢される向きとは逆方向に生じさせた電磁吸引力により引寄せ、連動する前記所定のリンク部材を前記装置本体部に収容される向きへ動かす電磁吸引機構であるものである。   Moreover, in the tubular body inner surface kelen device according to the present invention, if necessary, at least a part of the another link member of the main body support portion is formed of a ferromagnetic material, and the driving means includes the The other link member of the main body support portion is attracted by an electromagnetic attraction force generated in a direction opposite to the direction biased by the spring, and the predetermined link member to be interlocked is accommodated in the apparatus main body portion. This is an electromagnetic suction mechanism that moves in a direction.

このように本発明によれば、装置本体部に対し本体支持部を縮小収容させる駆動手段として電磁吸引機構を用い、電磁吸引力で本体支持部のいずれかのリンク部材を動かして装置本体部からの一部突出状態を解除できることにより、簡略な動作機構として装置の可動部分を必要最小限とすることができ、作業時における装置の信頼性を向上させられると共に、単純な駆動力発生機構を用いることで装置の小型・軽量化が図れ、持運び性など使い勝手も向上させられる。   As described above, according to the present invention, the electromagnetic attraction mechanism is used as a driving means for reducing and accommodating the main body support portion with respect to the apparatus main body portion, and one of the link members of the main body support portion is moved by the electromagnetic attraction force from the apparatus main body portion. As a simple operation mechanism, the movable part of the apparatus can be minimized, and the reliability of the apparatus during work can be improved and a simple driving force generation mechanism is used. This makes it possible to reduce the size and weight of the device and improve the ease of use, such as portability.

以下、本発明の一実施形態を図１〜図１０に基づいて説明する。本実施の形態においては、鉄塔主柱を構成する管体に主に適用する管体内面ケレン用装置の例について説明する。図１は本実施形態に係る管体内面ケレン用装置の正面図、図２は本実施形態に係る管体内面ケレン用装置における本体支持部の拡大状態説明図、図３は本実施形態に係る管体内面ケレン用装置の内部構造説明図、図４は本実施形態に係る管体内面ケレン用装置一端部の拡大正面図及び拡大底面図、図５は本実施形態に係る管体内面ケレン用装置一端部のノズルヘッド部取替え状態における拡大正面図及び拡大底面図、図６は本実施の形態に係る管体内面ケレン用装置の鋼管内面に対するケレン作業状態説明図、図７は本実施形態に係る管体内面ケレン用装置におけるケレン動作部の動作状態説明図、図８は本実施形態に係る管体内面ケレン用装置の鋼管段差部分に対するケレン作業状態説明図、図９は本実施形態に係る管体内面ケレン用装置におけるケレン動作部の鋼管段差部分に対する動作状態説明図、図１０は本実施形態に係る管体内面ケレン用装置における塗装作業状態説明図である。   Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, an example of a tubular body inner surface kelen apparatus that is mainly applied to a tubular body constituting a steel tower main column will be described. FIG. 1 is a front view of a tubular body inner surface kelen device according to the present embodiment, FIG. 2 is an enlarged explanatory view of a main body support portion in the tubular body inner surface kelen device according to the present embodiment, and FIG. FIG. 4 is an enlarged front view and an enlarged bottom view of one end of the tube inner surface kelen device according to the present embodiment, and FIG. 5 is an illustration of the inner surface kelen according to the present embodiment. 6 is an enlarged front view and an enlarged bottom view of the one end of the apparatus in a state where the nozzle head is replaced, FIG. 6 is an explanatory view of the kelen work state on the inner surface of the steel pipe of the apparatus for inner surface kelen according to the present embodiment, and FIG. FIG. 8 is an explanatory diagram of an operation state of a kelen operating portion in the tubular body inner surface kelen apparatus, FIG. 8 is an explanatory diagram of a kelen working state with respect to a steel pipe step portion of the tubular inner surface kelen apparatus according to the present embodiment, and FIG. Tube inner surface keren equipment Definitive Keren operating unit operating state diagram for the steel tube stepped portion, FIG. 10 is a coating operation state diagram of a tube inner surface Keren apparatus according to the present embodiment.

前記各図において本実施形態に係る管体内面ケレン用装置１は、ケレン作業対象の管体としての鋼管６０内における最小内径部分を通過可能な外径とされる略円筒状の装置本体部１０と、この装置本体部１０の一端側に回転動作可能に配設されるケレン動作部２０と、装置本体部１０一端部に内蔵されてケレン動作部２０を回転駆動する駆動部３０と、必要に応じて鋼管６０内面に接触して装置本体部１０を鋼管６０内面から離れた状態に保持する三つの本体支持部４０と、ケレン作業後にケレン動作部２０と取替えて鋼管６０内面への塗料の吹付けに用いるノズルヘッド部５０とを備える構成である。   In each of the drawings, the tubular body inner surface kelen apparatus 1 according to the present embodiment is a substantially cylindrical device main body 10 having an outer diameter that can pass through a minimum inner diameter portion in a steel pipe 60 as a tubular body to be worked on. A kelen operating unit 20 disposed on one end side of the apparatus main body 10 so as to be rotatable, a drive unit 30 incorporated in one end of the apparatus main body 10 and rotationally driving the kelen operating unit 20; Accordingly, the three main body support portions 40 that contact the inner surface of the steel pipe 60 to hold the apparatus main body portion 10 away from the inner surface of the steel pipe 60, and the kelen operating portion 20 are replaced after the cleansing work to spray the paint onto the inner surface of the steel pipe 60. And a nozzle head portion 50 used for attachment.

前記装置本体部１０は、鉄塔主柱をなす鋼管６０の全長にわたってその内部を通過可能な所定長さの略円筒体で形成され、ケレン動作部２０側の一端部にモータからなる駆動部３０を内蔵し、ケレン動作部２０と反対側の他端部には牽引用索体としてロープ７０等を連結され、鋼管６０内に挿入されてロープ７０等により管軸方向に移動可能に吊支されるものである。この装置本体部１０の中間部には三組の本体支持部４０が内蔵されると共に、その他端寄り位置には、本体支持部４０収容用の駆動手段としての電磁吸引部１１が配設される。また、この装置本体部１０内部には、ケーブル１３や塗料用の給送管１４が配設され、装置本体部１０他端部にロープ７０等と共に接続される外部からの電力供給用ケーブルや塗料供給管（図示を省略）を通じて、装置本体部１０内各部へ電力や塗料を供給できる構成である。   The apparatus main body 10 is formed of a substantially cylindrical body having a predetermined length that can pass through the entire length of the steel pipe 60 constituting the main pillar of the steel tower, and a drive unit 30 made of a motor is provided at one end of the keren operating unit 20 side. A rope 70 or the like is connected to the other end of the built-in side opposite to the keren operating unit 20 as a traction cord, and is inserted into the steel pipe 60 and suspended by the rope 70 or the like so as to be movable in the tube axis direction. Is. Three sets of main body support portions 40 are built in the intermediate portion of the apparatus main body portion 10, and an electromagnetic suction portion 11 as a driving means for housing the main body support portion 40 is disposed at a position near the other end. . In addition, a cable 13 and a paint feeding pipe 14 are disposed inside the apparatus main body 10, and an external power supply cable or paint connected to the other end of the apparatus main body 10 together with a rope 70 or the like. In this configuration, power and paint can be supplied to each part in the apparatus main body 10 through a supply pipe (not shown).

前記ケレン動作部２０は、駆動部３０の回転する駆動軸３２に着脱自在に取付けられる中心の連結部２１と、この連結部２１外周複数箇所にそれぞれ揺動自在に取付けられる前記ケレン手段としての三組のワイヤ集合体２２とを有して、駆動軸３２と一体に装置本体部１０に対し回転可能とされてなり、回転状態でワイヤ集合体２２端部を鋼管６０内面に接触させる構成である。   The kelen operating section 20 includes a central connecting portion 21 that is detachably attached to a driving shaft 32 that rotates the driving portion 30 and three kelen means that are swingably attached to a plurality of locations on the outer periphery of the connecting portion 21. The wire assembly 22 has a set, and is configured to be rotatable with respect to the apparatus main body 10 integrally with the drive shaft 32, and the end of the wire assembly 22 is brought into contact with the inner surface of the steel pipe 60 in a rotated state. .

ワイヤ集合体２２は、長さが段階的に異なる複数本の金属製ワイヤ２３を端部で一まとめにしたものであり、まとめた端部側を連結部２１外周にケレン動作部２０の回転軸を含む平面上でワイヤ集合体２２が揺動自在となるよう取付けることで、ワイヤ集合体２２は回転状態で遠心力により連結部２１側方で略放射状に外方へ向かって伸びた形態となり、且つ各ワイヤ２３の先端部が回転軸方向の所定寸法範囲及び回転中心に対する径方向の所定寸法範囲への広がり形状となり、鋼管６０の管軸方向に直交する面にもワイヤ２３先端を接触させて研磨を行える仕組みである。   The wire assembly 22 is a group of a plurality of metal wires 23 having different lengths in a stepwise manner, and the combined end portion is connected to the outer periphery of the connecting portion 21 and the rotating shaft of the keren operating portion 20. By attaching the wire assembly 22 to be swingable on a plane including the wire assembly 22, the wire assembly 22 is extended radially outwardly on the side of the connecting portion 21 by centrifugal force in a rotating state, In addition, the distal end portion of each wire 23 has a shape extending to a predetermined dimension range in the rotation axis direction and a predetermined dimension range in the radial direction with respect to the rotation center, and the tip end of the wire 23 is also brought into contact with a surface orthogonal to the tube axis direction of the steel pipe 60. It is a mechanism that can polish.

前記駆動部３０は、公知のモータ３１と、このモータ３１の回転軸にこれを延長する形で一体に連結され、装置本体部１０から突出した端部にケレン動作部２０及びノズルヘッド部５０をそれぞれ着脱可能とする駆動軸３２とを備える構成である。駆動軸３２は、先端部から所定長さ分を中空とされ、且つ外周に中空部分に通じる孔を複数穿設され、軸方向へ液体を流通可能とされる構成である。この駆動軸３２に対応して、装置本体部１０内に配設されて駆動軸３２を回転可能に支持する軸支部１２は、駆動軸３２の回転を許容しつつ装置本体部１０内部側から駆動軸３２外周の孔を通じて中空部分に液体を漏れなく供給可能なロータリジョイント機構を兼ねる構成である。   The driving unit 30 is integrally connected to a known motor 31 and a rotating shaft of the motor 31 so as to extend the shaft. The end portion protruding from the apparatus main body 10 has a kelen operating unit 20 and a nozzle head unit 50 attached thereto. It is the structure provided with the drive shaft 32 which can be attached or detached, respectively. The drive shaft 32 is configured to be hollow by a predetermined length from the distal end portion, and has a plurality of holes on the outer periphery leading to the hollow portion so that liquid can flow in the axial direction. Corresponding to the drive shaft 32, the shaft support 12 disposed in the apparatus main body 10 and rotatably supporting the drive shaft 32 is driven from the inside of the apparatus main body 10 while allowing the drive shaft 32 to rotate. This is a configuration that also serves as a rotary joint mechanism that can supply liquid to the hollow portion through the hole on the outer periphery of the shaft 32 without leakage.

前記本体支持部４０は、装置本体部１０の円筒軸方向に動く所定のリンク部材４１の運動を装置本体部１０径方向における機構全体の大きさの拡縮動作に変換する一種のリンク機構として形成され、装置本体部１０周方向に等間隔となる配置で三組配設される構成である。   The main body support portion 40 is formed as a kind of link mechanism that converts the movement of a predetermined link member 41 that moves in the cylindrical axis direction of the device main body portion 10 into an expansion / contraction operation of the entire mechanism in the radial direction of the device main body portion 10. In this configuration, three sets are arranged at equal intervals in the circumferential direction of the apparatus body 10.

詳細には、本体支持部４０の一リンク部材をなす略棒状の支持脚部４２が、装置本体部１０外周の略スリット状の孔１５を出没自在とされ、且つ前記支持脚部４２端部が装置本体部１０内部への収容状態から鋼管６０内面に接触可能な寸法分だけ外方へ突出状態となるまでの可動範囲を設定されて配置されており、装置本体部１０内の別のリンク部材４１を円筒軸方向に直線運動させてリンク機構全体を適宜変形させることで、支持脚部４２を連動させ、本体支持部４０の装置本体部１０径方向における大きさ、すなわち本体支持部４０の装置本体部１０内側部分から支持脚部４２端部に至る寸法を拡縮させる仕組みを得ている。   More specifically, a substantially rod-like support leg 42 that forms one link member of the main body support section 40 can freely enter and leave the substantially slit-shaped hole 15 on the outer periphery of the apparatus main body section 10, and an end of the support leg section 42 is formed. Another link member in the apparatus main body 10 is arranged with a movable range from the housed state in the apparatus main body 10 to the outward protruding state by a dimension that can contact the inner surface of the steel pipe 60. 41 is linearly moved in the direction of the cylindrical axis to appropriately deform the entire link mechanism, the support leg portion 42 is interlocked, and the size of the main body support portion 40 in the apparatus main body portion 10 radial direction, that is, the device of the main body support portion 40. A mechanism for expanding and reducing the dimension from the inner part of the main body 10 to the end of the support leg 42 is obtained.

装置本体部１０の鋼管６０内挿入状態で、この本体支持部４０の装置本体部１０径方向における大きさを最大限拡大した状態、つまり、支持脚部４２端部が鋼管６０内面に接触した状態を維持することで、装置本体部１０を鋼管６０内面からの離隔状態に保持できる。そして、装置本体部１０から外方へ突出する支持脚部４２端部が鋼管６０内面に接触する形態を、三組の本体支持部４０で一致させることで、装置本体部１０を鋼管６０内部の中心に位置させられ、これにより鋼管６０内面とケレン動作部２０又はノズルヘッド部５０との距離を一定とし、各種作業を鋼管６０内面に対し均等に行えるようにしている。   A state in which the size of the main body support portion 40 in the radial direction of the device main body 10 is maximized in a state where the device main body portion 10 is inserted into the steel pipe 60, that is, a state where the end of the support leg 42 is in contact with the inner surface of the steel pipe 60. By maintaining the above, the apparatus main body 10 can be held in a separated state from the inner surface of the steel pipe 60. And the form which contacts the steel pipe 60 inner surface with the end part of the support leg part 42 which protrudes outward from the apparatus main body part 10 is made to correspond by the three sets of main body support parts 40, and the apparatus main body part 10 is made into the inside of the steel pipe 60. Thus, the distance between the inner surface of the steel pipe 60 and the keren operating portion 20 or the nozzle head portion 50 is made constant, so that various operations can be performed equally with respect to the inner surface of the steel pipe 60.

この本体支持部４０の駆動機構については、支持脚部４２を装置本体部１０から外方へ突出させるべく、リンク部材４１が装置本体部１０一端側へ直進する向きへ所定のばね４３で付勢される一方、支持脚部４２を装置本体部１０内に収容させるべく、必要に応じてリンク部材４１は端部の鉄（強磁性体）部４１ａで通電状態の電磁吸引部１１から装置本体部１０他端側へ後退する向きへの電磁吸引力を受ける仕組みとなっている。装置本体部１０を鋼管６０内に挿入してケレン又は塗装対象箇所に到達させた状態など、使用時には電磁吸引部１１に通電しないことで、ばね４３の付勢力によりリンク部材４１を動かし、連動する支持脚部４２を突出させることができ、また、不使用時には電磁吸引部１１に通電することで、ばね４３による付勢力に抗してリンク部材４１を吸引して戻し、支持脚部４２を装置本体部１０内に収容することができる。   With respect to the drive mechanism of the main body support portion 40, the link member 41 is urged by a predetermined spring 43 in a direction in which the link member 41 advances straight to one end side of the device main body portion 10 so that the support leg portion 42 protrudes outward from the device main body portion 10. On the other hand, in order to accommodate the support leg 42 in the apparatus main body 10, the link member 41 is connected to the apparatus main body from the electromagnetic attraction unit 11 in the energized state by the iron (ferromagnetic material) 41a at the end as necessary. 10 It has a mechanism for receiving an electromagnetic attraction force in a direction of retreating to the other end side. When the device main body 10 is inserted into the steel pipe 60 and reaches the point to be painted or painted, the link member 41 is moved and interlocked by the biasing force of the spring 43 by not energizing the electromagnetic suction unit 11 during use. The support leg portion 42 can be protruded, and when not in use, the electromagnetic attracting portion 11 is energized to attract and return the link member 41 against the urging force of the spring 43 so that the support leg portion 42 is moved to the device. It can be accommodated in the main body 10.

前記ノズルヘッド部５０は、前記駆動軸３２に着脱自在とされ、駆動軸３２の中空部分に連通する塗料流路を有すると共に、この塗料流路に連通し、且つ駆動軸３２取付状態で軸中心に対し直交する向きに各々開口している二つのノズル５１を備える構成である。二つのノズル５１には、外部の供給管から塗料が、装置本体部１０内の給送管１４や軸支部１２、駆動軸３２を経て供給されることとなる。このノズルヘッド部５０が駆動軸３２と共に回転しつつ各ノズル５１から塗料を吐出することで、ノズルヘッド部５０の外周各方向に均等に塗料を吹付け可能となる仕組みである。   The nozzle head portion 50 is detachably attached to the drive shaft 32 and has a paint flow path communicating with the hollow portion of the drive shaft 32. The nozzle head section 50 communicates with the paint flow path and is centered in the attached state of the drive shaft 32. It is the structure provided with the two nozzles 51 each opened in the direction orthogonal to. The two nozzles 51 are supplied with paint from an external supply pipe through the feed pipe 14, the shaft support section 12, and the drive shaft 32 in the apparatus main body 10. This nozzle head unit 50 is a mechanism in which the coating material can be sprayed evenly in each direction of the outer periphery of the nozzle head unit 50 by discharging the coating material from each nozzle 51 while rotating together with the drive shaft 32.

次に、前記構成に基づく管体内面ケレン用装置の使用状態について説明する。あらかじめ、鉄塔下側に電源となる発電機やバキュームポンプ等の作業補助機器を設置する一方、鉄塔上部に作業用足場を組み、管体内面ケレン用装置１をはじめとして作業用足場上で用いるモニタ、バッテリー、ケーブル類といった各種作業用機材を搬入する。   Next, a use state of the tubular body inner surface keren apparatus based on the above-described configuration will be described. A work generator such as a generator or a vacuum pump is installed below the tower, and a work scaffold is assembled on the upper part of the tower. Carry in various work equipment such as batteries and cables.

そして、鋼管６０内面に対し管体内面ケレン用装置１を用いて行う作業の準備段階として、鉄塔主柱をなす鋼管６０上端からロープ７０等で吊支したカメラを挿入し、鋼管６０の最下部まで降ろす。この挿入したカメラを少しずつ引上げつつ、カメラで鋼管６０内部を撮像し、得られた画像をモニタで確認して調査し、鋼管６０内のケレン作業を行うべき高さ位置や周方向位置を特定する。   Then, as a preparatory stage for the work to be performed on the inner surface of the steel pipe 60 using the apparatus 1 for inner surface of the pipe body, a camera suspended by a rope 70 or the like is inserted from the upper end of the steel pipe 60 forming the main pillar of the steel tower. Down. While picking up the inserted camera little by little, the inside of the steel pipe 60 is imaged with the camera, and the obtained image is checked and investigated on the monitor, and the height position and circumferential position in the steel pipe 60 where the keren work should be performed are specified. To do.

この撮像が終了し、カメラを引上げて鋼管６０の外に取出したら、必要に応じてカメラを作業用足場から降ろして他の機材を上げるなどした後、管体内面ケレン用装置１を電源と接続し、電磁吸引部１１に通電して本体支持部４０を装置本体部１０内に収容した状態を保持しつつ、ロープ７０等で吊支した管体内面ケレン用装置１を鋼管６０上端から内部に挿入し、いったん鋼管６０の最下部まで降ろす。   After this imaging is finished, the camera is pulled out and taken out of the steel pipe 60. After removing the camera from the work scaffold and raising other equipment as necessary, the tubular inner surface keren device 1 is connected to the power source. Then, while maintaining the state where the electromagnetic attraction part 11 is energized and the main body support part 40 is accommodated in the apparatus main body part 10, the tubular body inner surface keren device 1 suspended by the rope 70 or the like is moved from the upper end of the steel pipe 60 to the inside. Insert and once lower to the bottom of the steel pipe 60.

鋼管６０最下部から管体内面ケレン用装置１を少しずつ引上げ、カメラ調査で特定したケレン作業対象箇所に到達させ、電磁吸引部１１への通電を停止して各本体支持部４０の支持脚部４２を突出させ、装置本体部１０を鋼管中心に位置させた状態で、ケレン動作部２０を回転させ、ケレン動作部２０の各ワイヤ集合体２１先端を鋼管６０内面に繰返し接触させてケレン作業を実施する（図６、図７参照）。ケレン作業対象箇所が連続する場合は、ケレン動作部２０を回転させて鋼管６０内面を研磨しつつ、管体内面ケレン用装置１ごと引上げてワイヤ集合体２１先端の鋼管６０内面への接触位置を軸方向に少しずつ移動させ、ケレン作業を継続的に実施していく。   The pipe inner surface kelen device 1 is pulled up little by little from the lowermost part of the steel pipe 60 to reach the kelen work target location specified by the camera survey, and the energization to the electromagnetic attraction unit 11 is stopped to support the leg portions of the main body support portions 40. With the protrusion 42 and the apparatus main body 10 positioned at the center of the steel pipe, the keren operation part 20 is rotated, and the tip of each wire assembly 21 of the kelen action part 20 is repeatedly brought into contact with the inner surface of the steel pipe 60 to perform the keren operation. Implement (see FIGS. 6 and 7). In the case where the parts to be worked are continuous, while rotating the kelen operating part 20 to polish the inner surface of the steel pipe 60, the tube inner surface kelen device 1 is pulled up to bring the tip of the wire assembly 21 into contact with the inner surface of the steel pipe 60. Move it little by little in the axial direction and continue to perform the cleansing work.

回転により鋼管６０の軸方向や径方向に広がった各ワイヤ集合体２１のワイヤ先端は、鋼管６０連結部分等の段差がある箇所における軸方向に略直交する面にも繰返し接触して研磨できることとなり、鋼管６０内面の形態によらず確実にケレン作業が行える（図８、図９参照）。このケレン作業中、鋼管６０の最下部に当る鉄塔基部では、あらかじめ設置したバキュームポンプ等を使用し、水抜き用の孔を介して鋼管６０内部からケレン作業で発生した塵埃等を吸出して除去回収する。各ケレン対象箇所への作業終了後、管体内面ケレン用装置１を鋼管６０の外まで引上げて取出す。   The wire tips of the wire assemblies 21 spread in the axial direction and the radial direction of the steel pipe 60 by the rotation can be polished by repeatedly contacting the surface substantially perpendicular to the axial direction at a place where there is a step such as a connecting portion of the steel pipe 60. The keren work can be reliably performed regardless of the form of the inner surface of the steel pipe 60 (see FIGS. 8 and 9). During the keren work, the steel tower 60, which is the lowest part of the steel pipe 60, uses a vacuum pump installed in advance to suck out dust collected from the kelen work from the inside of the steel pipe 60 through the water drain hole. To do. After completion of the work on each keren target part, the tubular body inner surface keren device 1 is pulled out of the steel pipe 60 and taken out.

ケレン作業後、再び鋼管６０内部にロープ７０等で吊支したカメラを挿入し、管体内面ケレン用装置１でケレン作業を実施した箇所が適切に仕上げられているかどうか検査する。不良等ある場合は適宜手直しを行う。   After the cleansing work, the camera suspended by the rope 70 or the like is inserted again into the steel pipe 60, and it is inspected whether or not the place where the cleansing work has been properly finished by the tubular body inner face cleansing device 1 is finished. If there is a defect, correct it appropriately.

検査完了後、必要に応じて作業用足場から不要な機材を降ろし、必要な他の機材を上げるなどした後、管体内面ケレン用装置１のケレン動作部２０をノズルヘッド部５０に取替え、塗料供給管を装置本体部１０に接続して外部からノズルヘッド部５０に塗料を供給可能とする。そして前記同様、電磁吸引部１１に通電して本体支持部４０を装置本体部１０内に収容した状態を保持しつつ、ロープ７０等で吊支した管体内面ケレン用装置１を鋼管６０上端から内部に挿入し、いったん鋼管６０の最下部まで降ろす。   After the inspection is completed, unneeded equipment is unloaded from the work scaffold as necessary, and other necessary equipment is lifted. Then, the kelen operating unit 20 of the tube inner surface keren device 1 is replaced with the nozzle head unit 50, and paint is applied. The supply pipe is connected to the apparatus main body 10 so that the paint can be supplied to the nozzle head 50 from the outside. And like the above, while energizing the electromagnetic suction part 11 and maintaining the state where the main body support part 40 is accommodated in the apparatus main body part 10, the tubular body inner surface keren device 1 suspended from the rope 70 or the like is moved from the upper end of the steel pipe 60. Inserted into the interior and once lowered to the bottom of the steel pipe 60.

鋼管６０最下部から管体内面ケレン用装置１を少しずつ引上げ、鋼管６０内面のケレン作業が行われた塗装対象箇所に到達させ、電磁吸引部１１への通電を停止して各本体支持部４０の支持脚部４２を突出させ、装置本体部１０を鋼管中心に位置させた状態で、ノズルヘッド部５０を回転させると共に、外部から塗料を圧送、供給して、ノズルヘッド部５０周囲各方向に塗料の吹付けを開始し、塗装対象箇所を含む鋼管６０内面への塗装作業を実施する（図１０参照）。塗装対象箇所が連続する場合は、ノズルヘッド部５０を回転させて鋼管６０内面に塗料を吹付けつつ、管体内面ケレン用装置１ごと引上げてノズルヘッド部５０から鋼管６０内面への塗料到達位置を軸方向に少しずつ移動させ、塗装作業を継続的に実施していく。   The pipe body inner surface kelen device 1 is pulled up little by little from the lowermost part of the steel pipe 60 to reach the portion to be coated on which the inner surface of the steel pipe 60 has been subjected to the galling work. In the state where the support leg portion 42 is protruded and the apparatus main body portion 10 is positioned at the center of the steel pipe, the nozzle head portion 50 is rotated, and the paint is pumped and supplied from the outside, and the nozzle head portion 50 is surrounded in each direction. The spraying of the paint is started, and the painting operation is performed on the inner surface of the steel pipe 60 including the portion to be painted (see FIG. 10). When the portions to be coated are continuous, the nozzle head portion 50 is rotated to spray the paint on the inner surface of the steel pipe 60, and the pipe inner surface kelen device 1 is pulled up to reach the paint arrival position from the nozzle head portion 50 to the inner surface of the steel tube 60. Is gradually moved in the axial direction, and the painting work is continued.

こうした塗装作業と同時に、鉄塔基部に設置したバキュームポンプ等を動作させ、水抜き用の孔を介して鋼管６０内部から塗装作業で流下した不要な塗料を吸出して除去回収すると共に、鋼管６０内に下向きの空気流を生じさせ、鋼管６０内部の塗装済部分の乾燥を促す。各塗装対象箇所への作業終了後、管体内面ケレン用装置１を鋼管６０の外まで引上げて取出す。   Simultaneously with such a painting operation, a vacuum pump or the like installed at the base of the steel tower is operated, and unnecessary paint that has flowed down from the inside of the steel pipe 60 through the drain hole is sucked and removed and collected in the steel pipe 60. A downward air flow is generated to promote drying of the painted portion inside the steel pipe 60. After completion of the work on each coating target location, the tubular body inner surface keren device 1 is pulled out of the steel pipe 60 and taken out.

塗装作業後は、再び鋼管６０内部にロープ７０等で吊支したカメラを挿入し、管体内面ケレン用装置１で塗装作業を実施した箇所が適切に仕上げられているかどうか検査する。不良等ある場合は適宜手直しを行い、全ての作業実施箇所で適切な仕上り状態が得られれば、一連の作業が完了となる。   After the painting work, the camera suspended by the rope 70 or the like is inserted again into the steel pipe 60, and it is inspected whether the place where the painting work is performed by the pipe inner surface keren device 1 is properly finished. If there is a defect or the like, correct it appropriately, and a series of operations will be completed if an appropriate finished state is obtained at all operation locations.

管体内面ケレン用装置１が鋼管６０内でケレン作業や塗装作業を実行している間、各本体支持部４０の支持脚部４２は装置本体部１０から外方へ突出した状態に維持され、鋼管６０内面に支持脚部４２先端を接触させ、装置本体部１０を常に鋼管６０の中心に位置させている。ケレン作業や塗装作業が終了した後は、管体内面ケレン用装置１を引上げる際の抵抗を抑えるため、電磁吸引部１１への通電を再開し、各本体支持部４０の支持脚部４２を装置本体部１０内に収容することとなる。   While the pipe body inner surface keren device 1 is performing kelen work and painting work in the steel pipe 60, the support leg portions 42 of the main body support portions 40 are maintained in a state of protruding outward from the device main body portion 10, The front end of the support leg 42 is brought into contact with the inner surface of the steel pipe 60, and the apparatus main body 10 is always positioned at the center of the steel pipe 60. After the keren work and the painting work are completed, in order to suppress the resistance when pulling up the tube inner surface keren device 1, the energization to the electromagnetic attraction unit 11 is resumed, and the support leg portions 42 of the main body support portions 40 are moved. It will be accommodated in the apparatus main body 10.

このように、本実施形態に係る管体内面ケレン用装置においては、鋼管６０内に上方から吊下げ状態の装置全体を挿入し、鋼管６０内の作業対象位置において、本体支持部４０を拡大させて装置本体部１０を管体内中心に位置させ、ケレン動作部２０を回転させると、多数のワイヤ２３先端が軸方向や径方向に広がった状態となってそれぞれ鋼管６０内面に接触可能であることから、鉄塔主柱をなす鋼管６０に段差、すなわち管軸方向に略直交するような面を介して管径が変化している箇所が存在していても、確実にワイヤ２３先端が接触してケレン作業を能率よく行うことができると共に、ケレン作業を実行する装置としては極めて簡略な構造で軽量化が図れ、作業対象である鉄塔が設けられることの多い山中など、作業機材を人手で現場まで運ぶ必要があるような箇所での作業に際しても、容易に持運んで問題なく装置を現場に搬入して作業を実施できる。   Thus, in the tubular body inner surface kelen apparatus according to the present embodiment, the entire apparatus suspended from above is inserted into the steel pipe 60, and the main body support portion 40 is enlarged at the work target position in the steel pipe 60. When the apparatus main body 10 is positioned at the center of the pipe body and the keren operating part 20 is rotated, the tips of the numerous wires 23 are spread in the axial direction and the radial direction and can contact the inner surface of the steel pipe 60 respectively. Therefore, even if there is a step in the steel pipe 60 forming the main pillar of the steel tower, that is, a portion where the pipe diameter is changed through a surface substantially orthogonal to the pipe axis direction, the tip of the wire 23 is reliably in contact with the steel pipe 60. The work can be carried out efficiently, and the equipment for carrying out the work can be reduced in weight with a very simple structure. Even when working in places such as is necessary to carry in, can be carried out work is carried into the field of the device without any problem in easily carry.

なお、前記実施形態に係る管体内面ケレン用装置において、本体支持部４０の駆動機構は、ばね４３と電磁吸引部１１を組合わせた構成としているが、これに限らず、十分に軽量化が図れるものであれば、ギヤ等を介してモータで駆動する機構やリニアモータで直接リンク部材４１を動かす機構等を用いる構成とすることもできる。また、本体支持部４０自体も、リンク機構を用いた構成に限らず、圧縮空気等流体の入出で支持体を装置本体部１０に対し拡縮させるような機構等としてもかまわない。   In the tubular body inner surface cleansing device according to the above embodiment, the drive mechanism of the main body support portion 40 is configured by combining the spring 43 and the electromagnetic suction portion 11. As long as it can be achieved, it is also possible to use a mechanism that drives with a motor via a gear or the like, a mechanism that directly moves the link member 41 with a linear motor, or the like. Further, the main body support section 40 itself is not limited to the configuration using the link mechanism, and may be a mechanism for expanding and contracting the support body relative to the apparatus main body section 10 by entering and exiting fluid such as compressed air.

また、前記実施形態に係る管体内面ケレン用装置において、ケレン動作部２０にはワイヤ集合体２２を三組配設し、ノズルヘッド部５０にはノズル５１を二つ配設する構成としているが、これに限らず、ワイヤ集合体２２やノズル５１の数は作業能率等に応じて適宜設定することができる。   Moreover, in the tubular body inner surface kelen device according to the above-described embodiment, three sets of wire assemblies 22 are arranged in the kelen operating unit 20 and two nozzles 51 are arranged in the nozzle head unit 50. Not limited to this, the number of wire assemblies 22 and nozzles 51 can be set as appropriate according to work efficiency and the like.

本発明の一実施の形態に係る管体内面ケレン用装置の正面図である。It is a front view of the apparatus for tubular inner surface keren according to an embodiment of the present invention. 本発明の一実施の形態に係る管体内面ケレン用装置における本体支持部の拡大状態説明図である。It is an expansion state explanatory view of a main part support part in a device for tubular inner surface keren according to an embodiment of the present invention. 本発明の一実施の形態に係る管体内面ケレン用装置の内部構造説明図である。It is internal structure explanatory drawing of the apparatus for tubular inner surface keren which concerns on one embodiment of this invention. 本発明の一実施の形態に係る管体内面ケレン用装置一端部の拡大正面図及び拡大底面図である。It is an enlarged front view and an enlarged bottom view of one end portion of the tubular body inner surface kelen according to the embodiment of the present invention. 本発明の一実施の形態に係る管体内面ケレン用装置一端部のノズルヘッド部取替え状態における拡大正面図及び拡大底面図である。It is the expansion front view and enlarged bottom view in the nozzle head part replacement | exchange state of the apparatus end part for pipe | tube inner surface keren concerning one embodiment of this invention. 本発明の一実施の形態に係る管体内面ケレン用装置の鋼管内面に対するケレン作業状態説明図である。It is a kelen work state explanatory view with respect to the steel pipe inner surface of the device for inner surface kelen according to an embodiment of the present invention. 本発明の一実施の形態に係る管体内面ケレン用装置におけるケレン動作部の動作状態説明図である。It is operation | movement state explanatory drawing of the kelen operation part in the apparatus for tubular inner surface keren which concerns on one embodiment of this invention. 本発明の一実施の形態に係る管体内面ケレン用装置の鋼管段差部分に対するケレン作業状態説明図である。It is a kelen work state explanatory view with respect to the steel pipe level difference part of the apparatus for tubular body inner surface keren concerning one embodiment of the present invention. 本発明の一実施の形態に係る管体内面ケレン用装置におけるケレン動作部の鋼管段差部分に対する動作状態説明図である。It is operation | movement state explanatory drawing with respect to the steel pipe level | step-difference part of the keren operation part in the apparatus for tubular body inner surface keren concerning one embodiment of this invention. 本発明の一実施の形態に係る管体内面ケレン用装置における塗装作業状態説明図である。It is coating work state explanatory drawing in the apparatus for tubular inner surface keren concerning one embodiment of the present invention.

符号の説明Explanation of symbols

１ 管体内面ケレン用装置
１０ 装置本体部
１１ 電磁吸引部
１２ 軸支部
１３ ケーブル
１４ 給送管
１５ 孔
２０ ケレン動作部
２１ 連結部
２２ ワイヤ集合体
２３ ワイヤ
３０ 駆動部
３１ モータ
３２ 駆動軸
４０ 本体支持部
４１ リンク部材
４１ａ 鉄部
４２ 支持脚部
４３ ばね
５０ ノズルヘッド部
５１ ノズル
６０ 鋼管
７０ ロープ DESCRIPTION OF SYMBOLS 1 Apparatus for pipe inner surface kelen 10 Apparatus main body part 11 Electromagnetic attraction part 12 Shaft support part 13 Cable 14 Feed pipe 15 Hole 20 Keren operation part 21 Connection part 22 Wire assembly 23 Wire 30 Drive part 31 Motor 32 Drive shaft 40 Main body support Part 41 Link member 41a Iron part 42 Support leg part 43 Spring 50 Nozzle head part 51 Nozzle 60 Steel pipe 70 Rope

Claims (4)

管体内に挿入されて管体軸方向へ移動可能に牽引され、所定のケレン手段を前記管体内面に接触させてケレン動作を行わせつつ、管体軸方向に移動させて管体内面所定範囲に対するケレン作業を可能とする管体内面ケレン用装置において、
立設された一又は複数連結状態の前記管体に対し、管体の最小内径部位を通過可能な外径の略円筒体として形成され、牽引用の索体を連結される装置本体部と、
前記ケレン手段を一又は複数有して前記装置本体部の一端側に装置本体部の円筒軸と平行な軸周りに回転可能とされて配設されるケレン動作部と、
前記装置本体部一端部に内蔵されて前記ケレン動作部を回転駆動する駆動部と、
少なくとも前記装置本体部外径から前記管体の最大内径までの範囲で拡縮可能とされて装置本体部に周方向等間隔となる配置で複数配設される本体支持部とを備え、
前記ケレン動作部が、前記駆動部の回転する駆動軸に連結される中心の連結部と、当該連結部に一又は複数組取付けられる前記ケレン手段としてのワイヤの集合体とを有し、当該ワイヤ集合体をなす複数のワイヤの長さを複数通りに異ならせると共に、各ワイヤ集合体が連結部に対し駆動軸中心を含む平面上で揺動自在として取付けられ、ケレン動作部回転時の遠心力に伴って各ワイヤ集合体が連結部側方へ略放射状に伸張し、且つ各ワイヤの先端部が回転軸方向の所定寸法範囲及び回転中心に対する径方向の所定寸法範囲へそれぞれ広がる状態となり、
前記管体内にケレン動作部を下側として上方から挿入して管体軸方向に移動可能に吊支し、管体内のケレン作業対象箇所へ到達させた状態で、各本体支持部を管体内面に接触する拡大状態とし、装置本体部を管体内面から離隔させて管体内の略中心に位置させると共に、ケレン動作部を回転させて各ワイヤ集合体を管体内面に接触させることを
特徴とする管体内面ケレン用装置。 It is inserted into the pipe body and pulled so as to be movable in the pipe body axial direction. In the device for inner surface kelen that enables keren work against
An apparatus main body portion formed as a substantially cylindrical body having an outer diameter capable of passing through the minimum inner diameter portion of the tubular body, and connected to the cable body for traction, with respect to the one or more connected tubular bodies erected;
A kelen operating part that has one or a plurality of the keren means and is disposed on one end of the apparatus main body so as to be rotatable around an axis parallel to the cylindrical axis of the apparatus main body;
A drive unit built in one end of the apparatus main body to drive the keren operation unit to rotate;
A main body support section that is capable of being expanded and contracted at least in the range from the outer diameter of the apparatus main body section to the maximum inner diameter of the tubular body, and is arranged in a plurality of arrangements at equal intervals in the circumferential direction of the apparatus main body section,
The keren operating part includes a central coupling part coupled to a rotating drive shaft of the driving part, and an assembly of wires serving as the kelen means attached to the coupling part. The length of the wires forming the assembly is varied in several ways, and each wire assembly is attached to the connecting portion so as to be swingable on a plane including the center of the drive shaft, and the centrifugal force during rotation of the keren operating portion As a result, each wire assembly extends substantially radially to the side of the connecting portion, and the tip of each wire expands into a predetermined dimension range in the rotation axis direction and a predetermined dimension range in the radial direction with respect to the rotation center, respectively.
Each body support portion is inserted into the inner surface of the tubular body in a state where it is inserted into the tubular body from the upper side with the kelen operating part on the lower side, suspended so as to be movable in the axial direction of the tubular body, and reaching the kelen work target location in the tubular body. The apparatus main body is separated from the inner surface of the tube and positioned at the approximate center of the tube, and the wire operation unit is rotated to bring each wire assembly into contact with the inner surface of the tube. A device for the inner surface of the tubular body. 前記請求項１に記載の管体内面ケレン用装置において、
前記ケレン動作部が、駆動部の駆動軸に対し着脱自在とされ、
前記駆動部の駆動軸が、軸方向へ液体を流通可能に一部中空とされると共に、装置本体部における駆動軸の軸支機構が、駆動軸の回転を許容しつつ装置本体部内部側から駆動軸の中空部分に液体を漏れなく供給可能なロータリジョイント機構を兼ねて形成されてなり、
前記装置本体部が、外部から塗料を圧送供給可能とする所定の供給管を接続可能とされ、
前記駆動軸にケレン動作部に代えて塗料のノズルヘッド部を駆動軸方向と略直交する塗料吐出方向として取付け、前記装置本体部に供給管を介して塗料を圧送供給可能な状態とし、装置本体部から駆動軸を通じてノズルヘッド部に塗料を供給しつつ装置本体部に対しノズルヘッド部を回転させて、ノズルヘッド部から周囲各方向に塗料を吹付け可能とすることを
特徴とする管体内面ケレン用装置。 In the apparatus for tubular inner surface keren according to claim 1,
The keren operation part is detachable from the drive shaft of the drive part,
The drive shaft of the drive unit is partially hollow so that liquid can flow in the axial direction, and the shaft support mechanism of the drive shaft in the device main body allows rotation of the drive shaft from the inside of the device main body. It is also formed as a rotary joint mechanism that can supply liquid to the hollow part of the drive shaft without leakage,
The apparatus main body can be connected to a predetermined supply pipe that enables pressure supply of paint from the outside,
A paint nozzle head portion is attached to the drive shaft as a paint discharge direction substantially perpendicular to the drive shaft direction in place of the keren operation portion, and the device main body portion is in a state where the paint can be pressure-fed and supplied via a supply pipe. The inner surface of the tubular body is characterized in that the nozzle head can be rotated with respect to the apparatus main body while supplying the paint from the nozzle to the nozzle head through the drive shaft, and the paint can be sprayed from the nozzle head to the surrounding directions. Keren equipment. 前記請求項１又は２に記載の管体内面ケレン用装置において、
前記本体支持部が、複数のリンク部材を組合わせたリンク機構とされ、所定のリンク部材を装置本体部収容状態から装置本体部外方への突出状態に至る範囲で可動として装置本体部の径方向における本体支持部寸法を拡縮可能とすると共に、前記所定のリンク部材と連動する別のリンク部材を所定動作方向に付勢して前記所定のリンク部材を装置本体部外方へ突出する向きへ動かすばねを配設されてなり、
前記装置本体部内に、前記本体支持部をなすリンク機構を前記ばねの付勢力に抗して動作させ、前記所定のリンク部材を装置本体部に収容される向きへ動かす電動式の駆動手段を配設することを
特徴とする管体内面ケレン用装置。 In the apparatus for inner surface keren according to claim 1 or 2,
The main body support portion is a link mechanism in which a plurality of link members are combined, and a predetermined link member is movable in a range from the device main body housing state to a protruding state to the outside of the device main body portion. The size of the main body support portion in the direction can be expanded and contracted, and another link member interlocked with the predetermined link member is urged in a predetermined operation direction so that the predetermined link member protrudes outward from the apparatus main body portion. A moving spring is arranged,
An electric drive means is arranged in the apparatus main body for operating the link mechanism forming the main body support against the biasing force of the spring and moving the predetermined link member in the direction accommodated in the apparatus main body. An apparatus for inner surface kelen that is characterized by being installed. 前記請求項３に記載の管体内面ケレン用装置において、
前記本体支持部のうち前記別のリンク部材の少なくとも一部が、強磁性体の素材で形成され、
前記駆動手段が、前記本体支持部のうち前記別のリンク部材を、前記ばねにより付勢される向きとは逆方向に生じさせた電磁吸引力により引寄せ、連動する前記所定のリンク部材を前記装置本体部に収容される向きへ動かす電磁吸引機構であることを
特徴とする管体内面ケレン用装置。 In the apparatus for inner surface keren according to claim 3,
At least a part of the another link member of the main body support portion is formed of a ferromagnetic material,
The drive means attracts the another link member of the main body support portion by an electromagnetic attracting force generated in a direction opposite to the direction urged by the spring, and the interlocked predetermined link member is A tubular body inner surface kelen device characterized by being an electromagnetic suction mechanism that moves in a direction to be accommodated in the device main body.
JP2006151616A 2006-05-31 2006-05-31 Device for surface preparation of inner surface of piping body Pending JP2007319757A (en)

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JP2009189910A (en) * 2008-02-12 2009-08-27 Masakazu Yamamoto Method for cleaning inside of pipe
CN103769396A (en) * 2014-02-12 2014-05-07 山东泰丰清洗科技有限公司 On-line cleaning process for fuel gas desulfurizing tower
KR101607944B1 (en) 2014-07-04 2016-04-01 삼성중공업(주) Pig
CN108717988A (en) * 2018-05-29 2018-10-30 中国舰船研究设计中心 A kind of detachable scraping dirt mechanism for water conservancy diversion shape Antenna mast
CN114472398A (en) * 2022-01-20 2022-05-13 曾群英 Water conservancy irrigation canals and ditches are with inside edulcoration equipment
CN115069700A (en) * 2022-06-07 2022-09-20 重庆电子工程职业学院 Ventilating duct cleaning robot
JP7482280B1 (en) 2023-03-22 2024-05-13 株式会社ユアテック Coating device and coating method

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JPS62155983A (en) * 1985-12-28 1987-07-10 日本電信電話株式会社 Method for repairing underground pipeline
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Publication number Priority date Publication date Assignee Title
JP2009189910A (en) * 2008-02-12 2009-08-27 Masakazu Yamamoto Method for cleaning inside of pipe
CN103769396A (en) * 2014-02-12 2014-05-07 山东泰丰清洗科技有限公司 On-line cleaning process for fuel gas desulfurizing tower
KR101607944B1 (en) 2014-07-04 2016-04-01 삼성중공업(주) Pig
CN108717988A (en) * 2018-05-29 2018-10-30 中国舰船研究设计中心 A kind of detachable scraping dirt mechanism for water conservancy diversion shape Antenna mast
CN114472398A (en) * 2022-01-20 2022-05-13 曾群英 Water conservancy irrigation canals and ditches are with inside edulcoration equipment
CN114472398B (en) * 2022-01-20 2023-12-08 徐州欧润泵业有限公司 Water conservancy irrigation ditch is with inside edulcoration equipment
CN115069700A (en) * 2022-06-07 2022-09-20 重庆电子工程职业学院 Ventilating duct cleaning robot
CN115069700B (en) * 2022-06-07 2023-05-23 重庆电子工程职业学院 Ventilation pipeline cleans machine people
JP7482280B1 (en) 2023-03-22 2024-05-13 株式会社ユアテック Coating device and coating method

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