JP2020138251A - Steel pipe polishing device and steel pipe polishing method using the same - Google Patents

Steel pipe polishing device and steel pipe polishing method using the same Download PDF

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JP2020138251A
JP2020138251A JP2019033649A JP2019033649A JP2020138251A JP 2020138251 A JP2020138251 A JP 2020138251A JP 2019033649 A JP2019033649 A JP 2019033649A JP 2019033649 A JP2019033649 A JP 2019033649A JP 2020138251 A JP2020138251 A JP 2020138251A
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steel pipe
polishing
main body
supported
body frame
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JP7232080B2 (en
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雅人 ▲高▼見
雅人 ▲高▼見
Masato Takami
勇希 上原
Yuki Uehara
勇希 上原
剛士 黒川
Takeshi Kurokawa
剛士 黒川
喜明 島田
Yoshiaki Shimada
喜明 島田
昌大 新貝
Masahiro Aragai
昌大 新貝
良太 竹田
Ryota Takeda
良太 竹田
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Sanwa Tekki Corp
East Japan Railway Co
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Sanwa Tekki Corp
East Japan Railway Co
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Abstract

To provide a device that can efficiently polish an outer periphery of a steel pipe by small force while moving in a circumferential direction.SOLUTION: A polishing device 1 polishes an outer periphery of a steel pipe P while moving, comprises magnet wheels 4 that are adsorbed on an outer peripheral surface of the steel pipe P, and further comprises a running body 2 that can feely move in a circumferential direction of the steel pipe P by rolling the wheels and a main body 3 supported on the running body 2. The running body 2 comprises at least one pair of magnet wheels 4 arranged separately in a lateral direction, a direction orthogonal to an axis line of the steel pipe P, and a frame body 5 that supports the magnet wheels 4. The main body 3 comprises a main body frame 14 supported by the frame body 5 and a driving device 15 and a pair of left and right brushes 16 supported by the main body frame 14, and a transmission mechanism 18 interposed between the brush 16 and the driving device 15.SELECTED DRAWING: Figure 1

Description

本発明は、塗装前のケレン等の目的で、鋼管の外周をその周方向に移動しながら研磨する装置と、これを用いた鋼管の研磨方法に関する。 The present invention relates to an apparatus for polishing the outer periphery of a steel pipe while moving in the circumferential direction for the purpose of cleaning before painting, and a method for polishing the steel pipe using the apparatus.

従来、電動ドリルドライバ型の本体にカップ型ブラシを装着したケレン機として、特許文献1に記載されたものが知られている。 Conventionally, as a keren machine in which a cup-type brush is attached to an electric drill driver type main body, the one described in Patent Document 1 is known.

特開２００３-２３１０５８号公報Japanese Unexamined Patent Publication No. 2003-231058

上記特許文献１に記載されたものは、鋼管の研磨を効率的に行うことができる装置ではない。
したがって、本発明は、鋼管の外周をその周方向に移動しながら比較的小さな人力により効率的に研磨する装置と、これを用いた鋼管の研磨方法を提供することを課題としている。 The device described in Patent Document 1 is not an apparatus capable of efficiently polishing a steel pipe.
Therefore, an object of the present invention is to provide an apparatus for efficiently polishing a steel pipe by moving the outer circumference in the circumferential direction with a relatively small amount of human power, and a method for polishing the steel pipe using the apparatus.

以下、添付図面の符号を参照して説明するが、本発明はこれに限定されるものではない。
上記課題を解決するための、本発明の研磨装置１は、鋼管Ｐの外周面に吸着する少なくとも左右一対の磁石車輪４を具備し当該磁石車輪４を転動させることによって鋼管Ｐの外周を周方向に移動自在の本体フレーム１４と、この本体フレーム１４に支持される駆動装置１５と、鋼管Ｐの外周に接するように本体フレーム１４に支持されるブラシ１６と、本体フレーム１４に支持され、ブラシ１６と駆動装置１５との間に介設される伝動機構１８とを具備する。
上記研磨装置１を用いてほぼ垂直に立設された鋼管Ｐの外周を研磨する本発明の方法は、研磨装置１を鋼管Ｐの上部に係止されたトルクリール１９から引き出されたワイヤ２０の下端に吊支し、研磨装置１の自重の一部をトルクリール１９に負担させながら手動にて周方向に磨装置１を移動させる。
上記研磨装置１を用いてほぼ垂直に立設された鋼管Ｐの外周を研磨する本発明の他の方法は、２つの研磨装置１を鋼管Ｐの外周に高さをずらして対向配置すると共に、互いに連結体２１で連結し、同時に稼動させながら鋼管Ｐの外周を螺旋状に移動させる。 Hereinafter, the description will be made with reference to the reference numerals in the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the polishing apparatus 1 of the present invention includes at least a pair of left and right magnet wheels 4 that are attracted to the outer peripheral surface of the steel pipe P, and by rolling the magnet wheels 4, the outer periphery of the steel pipe P is rotated. A main body frame 14 that can move in a direction, a drive device 15 supported by the main body frame 14, a brush 16 supported by the main body frame 14 so as to be in contact with the outer periphery of the steel pipe P, and a brush supported by the main body frame 14 A transmission mechanism 18 interposed between the 16 and the drive device 15 is provided.
The method of the present invention for polishing the outer periphery of a steel pipe P erected substantially vertically using the polishing device 1 is a method of drawing a wire 20 from a torque reel 19 in which the polishing device 1 is locked to the upper part of the steel tube P. Suspended at the lower end, the polishing device 1 is manually moved in the circumferential direction while bearing a part of the weight of the polishing device 1 on the torque reel 19.
In another method of the present invention for polishing the outer periphery of the steel pipe P erected substantially vertically using the polishing apparatus 1, the two polishing apparatus 1 are arranged on the outer periphery of the steel pipe P at different heights and facing each other. The outer circumference of the steel pipe P is spirally moved while being connected to each other by the connecting body 21 and operating at the same time.

本発明の研磨装置１は、鋼管Ｐの外周に吸着する磁石車輪４を転動させて鋼管Ｐの外周をその周方向に移動しながら研磨するので比較的小さな人力により効率的に鋼管Ｐの外周を研磨することができる。
本発明の研磨装置１を用いた鋼管柱Ｐの研磨方法によれば、研磨装置１を、鋼管Ｐの上部に係止されたトルクリール１９から引き出されたワイヤ２０の下端に吊支し、自重の一部をトルクリール１９に負担させながら手動にて研磨装置１を移動させるので、作業者の負担が軽減されるし、作業中に研磨装置１が鋼管Ｐから脱落することを防止し、安全に作業を行うことができる。 In the polishing apparatus 1 of the present invention, the magnet wheel 4 attracted to the outer circumference of the steel pipe P is rolled to polish the outer circumference of the steel pipe P while moving in the circumferential direction, so that the outer circumference of the steel pipe P is efficiently polished by a relatively small human force. Can be polished.
According to the method for polishing the steel pipe column P using the polishing device 1 of the present invention, the polishing device 1 is suspended from the lower end of the wire 20 drawn from the torque reel 19 locked to the upper part of the steel pipe P, and its own weight. Since the polishing device 1 is manually moved while the torque reel 19 bears a part of the above, the burden on the operator is reduced, and the polishing device 1 is prevented from falling off from the steel pipe P during the work, which is safe. Can work on.

本発明に係る研磨装置の正面側の斜視図である。It is a perspective view of the front side of the polishing apparatus which concerns on this invention. 図１の研磨装置の背面側の斜視図である。It is a perspective view of the back side of the polishing apparatus of FIG. 図１の研磨装置の正面図であるIt is a front view of the polishing apparatus of FIG. 図１の研磨装置の背面図であるIt is a rear view of the polishing apparatus of FIG. 図１の研磨装置の側面図である。It is a side view of the polishing apparatus of FIG. 図１の研磨装置の平面図である。It is a top view of the polishing apparatus of FIG. 図１の研磨装置を用いた鋼管の研磨方法を示す説明図である。It is explanatory drawing which shows the polishing method of the steel pipe using the polishing apparatus of FIG. 図１の研磨装置を用いた鋼管の他の研磨方法を示す説明図であり、（Ａ）は正面図、（Ｂ）は平面図である。It is explanatory drawing which shows the other polishing method of the steel pipe using the polishing apparatus of FIG. 1, (A) is a front view, (B) is a plan view.

図面を参照して本発明の実施の形態を説明する。
研磨装置１は、研磨対象である鋼管Ｐの外周を移動しつつ研磨するための装置である。研磨する鋼管Ｐの姿勢は問わないが、ここでは垂直に建てられた鋼管柱を例にとり、その軸線方向を上下、軸線直交方向を左右、鋼管Ｐに向かう方向を前方、離れる方向を後方として説明する。 Embodiments of the present invention will be described with reference to the drawings.
The polishing device 1 is a device for polishing while moving the outer circumference of the steel pipe P to be polished. The posture of the steel pipe P to be polished does not matter, but here, taking a vertically built steel pipe column as an example, the axial direction is up and down, the axial orthogonal direction is left and right, the direction toward the steel pipe P is forward, and the direction away from it is rear. To do.

研磨装置１は、鋼管Ｐの外周を周方向に移動自在の走行体２と、この走行体２に支持される本体３とを具備する。 The polishing device 1 includes a traveling body 2 that can move around the outer circumference of the steel pipe P in the circumferential direction, and a main body 3 that is supported by the traveling body 2.

走行体２は、鋼管Ｐの外周面に吸着する磁石車輪４を具備し、当該磁石車輪４を転動させることによって鋼管Ｐの外周を周方向に移動自在である。走行体２は、鋼管Ｐの軸線直交方向である左右に離れて配置される少なくとも一対の磁石車輪４と、これらの磁石車輪４を支持する枠体５とを具備する。 The traveling body 2 includes a magnet wheel 4 that is attracted to the outer peripheral surface of the steel pipe P, and can move around the outer circumference of the steel pipe P in the circumferential direction by rolling the magnet wheel 4. The traveling body 2 includes at least a pair of magnet wheels 4 arranged apart from each other on the left and right sides orthogonal to the axis of the steel pipe P, and a frame body 5 for supporting these magnet wheels 4.

図示の実施形態において、磁石車輪４は、概略矩形に組まれた枠体５の四隅に位置して上下に離れて２対設けられる。枠体５は、上下一対のセンタープレート６の両端部間を上下に接続する左右一対の主軸７によって概略矩形に組まれる。磁石車輪４は、中間部において主軸７の上下端部に枢支されるアーム８の前端側に支持脚９を介して取り付けられる。上下のアーム８の先端部間は、連結板１７で連結される。図６に示すように、支持脚９は、ステア軸１０によってアーム８に回転自在に支持される。ステア軸１０上には、ウオームホイール１０ａが固着され、これに噛み合うウオームギア１１がアーム８に軸支される。アーム８から突出したウオームギア１１の摘み部１１ａを回すことで、ステア軸１０の回転角度を調整し、それによって磁石車輪４の転動方向を変更することができる。なお、いずれの磁石車輪４も、その吸着力を入り切りすることができる。 In the illustrated embodiment, two pairs of magnet wheels 4 are provided vertically apart from each other at four corners of a frame body 5 assembled in a substantially rectangular shape. The frame body 5 is assembled in a substantially rectangular shape by a pair of left and right main shafts 7 that vertically connect both ends of a pair of upper and lower center plates 6. The magnet wheel 4 is attached to the front end side of the arm 8 pivotally supported by the upper and lower ends of the main shaft 7 at the intermediate portion via the support legs 9. The tips of the upper and lower arms 8 are connected by a connecting plate 17. As shown in FIG. 6, the support legs 9 are rotatably supported by the arm 8 by the steering shaft 10. A worm wheel 10a is fixed on the steer shaft 10, and a worm gear 11 that meshes with the worm wheel 10a is pivotally supported by the arm 8. By turning the knob portion 11a of the worm gear 11 protruding from the arm 8, the rotation angle of the steer shaft 10 can be adjusted, thereby changing the rolling direction of the magnet wheel 4. It should be noted that any of the magnet wheels 4 can turn on and off the attractive force.

左右のアーム８の後端側は、ターンバックル１２を介して相互に接続される。ターンバックル１２によって左右のアーム８間の角度を調整することで、左右の磁石車輪４間の間隔を調整し、対象鋼管Ｐの半径に適合させ、最適な圧力でブラシ１６を鋼管Ｐの外周に接触させることができる。 The rear end sides of the left and right arms 8 are connected to each other via a turnbuckle 12. By adjusting the angle between the left and right arms 8 with the turnbuckle 12, the distance between the left and right magnet wheels 4 is adjusted to match the radius of the target steel pipe P, and the brush 16 is applied to the outer circumference of the steel pipe P with the optimum pressure. Can be contacted.

本体３は、枠体５のセンタープレート６にボルト１３で支持される本体フレーム１４を具備する。本体フレーム１４に、駆動装置１５、左右一対のブラシ１６、ブラシ１６と駆動装置１５との間の伝動機構１８（図６）が組み込まれる。 The main body 3 includes a main body frame 14 supported by a bolt 13 on the center plate 6 of the frame body 5. A drive device 15, a pair of left and right brushes 16, and a transmission mechanism 18 (FIG. 6) between the brush 16 and the drive device 15 are incorporated in the main body frame 14.

本体フレーム１４は、伝動機構１８を覆う上部カバー１４ａと、ブラシ１６を覆う下部カバー１４ｂとを具備する。上部カバー１４ａの背面側に駆動装置１５が固着される。下部カバー１４ｂは、上下、左右及び背面側が閉じ、前面側が開放している。開放した前面側の左右縁部から柔軟なフラップ１４ｃが延出している。 The main body frame 14 includes an upper cover 14a that covers the transmission mechanism 18 and a lower cover 14b that covers the brush 16. The drive device 15 is fixed to the back side of the upper cover 14a. The lower cover 14b is closed on the top and bottom, left and right, and the back side, and is open on the front side. Flexible flaps 14c extend from the left and right edges on the open front side.

左右一対のブラシ１６は、円柱状のロールブラシで、それぞれ鋼管Ｐの外周に接するように、一部が下部カバー１４ｂの開放部から前面側に突出している。ブラシ１６は、互いに左右に離れて平行に配置され、鋼管Ｐの軸線に沿う支持軸１６ａにより本体フレーム１４に支持される。なお、ブラシ１６は、単一であってもよい。 The pair of left and right brushes 16 are columnar roll brushes, and a part of them protrudes to the front side from the open portion of the lower cover 14b so as to be in contact with the outer periphery of the steel pipe P. The brushes 16 are arranged in parallel on the left and right sides, and are supported by the main body frame 14 by a support shaft 16a along the axis of the steel pipe P. The brush 16 may be a single brush.

図示の実施形態は、駆動装置１５として、市販のディスクグラインダーの本体を適用したが、これに限定されるものではない。駆動装置１５は、本体フレーム１４の背部に固定され、ハンドル１５ａが上下方向に延び、その下端に着脱式の電源バッテリ１５ｂを備える。作業者がハンドル１５ａを握って走行体２を鋼管Ｐの周方向に移動させることができる。 In the illustrated embodiment, the main body of a commercially available disc grinder is applied as the drive device 15, but the driving device 15 is not limited to this. The drive device 15 is fixed to the back of the main body frame 14, the handle 15a extends in the vertical direction, and the detachable power supply battery 15b is provided at the lower end thereof. The operator can grasp the handle 15a and move the traveling body 2 in the circumferential direction of the steel pipe P.

伝動機構１８は、駆動装置１５の出力軸の回転を、一対のブラシ１６に、互いに反対方向に回転するよう伝達する歯車群とベルトとを具備する。 The transmission mechanism 18 includes a gear group and a belt that transmit the rotation of the output shaft of the drive device 15 to the pair of brushes 16 so as to rotate in opposite directions.

ここまで、走行体２と本体３とを区別して説明してきたが、本体３それ自体が走行体２の機能を有する両者一体のものとして本発明を理解することができるし、具体的な構造もそのように容易に変更することができる。 Up to this point, the traveling body 2 and the main body 3 have been described separately, but the present invention can be understood as the main body 3 itself having the function of the traveling body 2 and the specific structure is also included. It can be changed so easily.

次に、研磨装置１を用いてほぼ垂直に立設された鋼管Ｐの外周を研磨する方法を説明する。図７に示すように、研磨装置１を鋼管Ｐの上部に係止されたトルクリール１９から引き出されたワイヤ２０の下端に吊支することによって、研磨装置１の自重の一部をトルクリール１９に負担させ、作業者が研磨装置１を保持しながら、手動にて周方向に移動させる。必要に応じ、ウオームギア１１の摘み部１１ａを回すことで、ステア軸１０の回転角度を調整し、それによって磁石車輪４の転動方向を変更し、研磨装置１を螺旋状に移動させることができる。 Next, a method of polishing the outer periphery of the steel pipe P erected substantially vertically by using the polishing device 1 will be described. As shown in FIG. 7, by suspending the polishing device 1 at the lower end of the wire 20 drawn from the torque reel 19 locked to the upper part of the steel pipe P, a part of the weight of the polishing device 1 is partially transferred to the torque reel 19. The operator manually moves the polishing device 1 in the circumferential direction while holding the polishing device 1. If necessary, by turning the knob portion 11a of the worm gear 11, the rotation angle of the steer shaft 10 can be adjusted, thereby changing the rolling direction of the magnet wheel 4 and moving the polishing device 1 in a spiral shape. ..

他の方法では、図８（Ａ），（Ｂ）に示すように、２つの研磨装置１を鋼管Ｐの外周に高さをずらして対向配置し、互いに連結体２１で連結し、鋼管Ｐの外周を螺旋状に移動させる。２台をまとめて配置することで施工力が２倍になり、また鋼管Ｐからの脱落が防止できる。 In another method, as shown in FIGS. 8A and 8B, the two polishing devices 1 are arranged so as to face each other at different heights on the outer periphery of the steel pipe P, and are connected to each other by a connecting body 21 to form the steel pipe P. Move the outer circumference in a spiral. By arranging the two units together, the construction force can be doubled and the steel pipe P can be prevented from falling off.

本発明は、上記実施形態だけでなく、例えば横方向に配設されたビーム等に用いられる鋼管への使用など、他の種々の設置形態の鋼管の研磨作業に適用可能である。 The present invention is applicable not only to the above embodiment but also to polishing of steel pipes of various other installation forms such as use for steel pipes used for beams arranged in the lateral direction and the like.

１ 研磨装置
２ 走行体
３ 本体
４ 磁石車輪
５ 車軸
６ センタープレート
７ 主軸
８ アーム
９ 支持脚
１０ ステア軸
１０ａ ウオームホイール
１１ ウオームギア
１１ａ 摘み部
１２ ターンバックル
１３ ボルト
１４ 本体フレーム
１４ａ 上部カバー
１４ｂ 下部カラー
１４ｃ フラップ
１５ 駆動装置
１５ａ ハンドル
１５ｂ バッテリ
１６ ブラシ
１７ 連結板
１８ 伝動機構
１９ トルクリール
２０ ワイヤ
２１ 連結体
Ｐ 鋼管 1 Polishing device 2 Traveling body 3 Main body 4 Magnet wheel 5 Axle 6 Center plate 7 Main shaft 8 Arm 9 Support leg 10 Steer shaft 10a Worm wheel 11 Worm gear 11a Knob 12 Turn buckle 13 Bolt 14 Body frame 14a Top cover 14b Lower collar 14c Flap 15 Drive device 15a Handle 15b Battery 16 Brush 17 Connecting plate 18 Transmission mechanism 19 Torque reel 20 Wire 21 Connecting body P Steel pipe

Claims (10)

研磨対象である鋼管の外周を移動しつつ研磨するための装置であって、
前記鋼管の外周面に吸着する少なくとも左右一対の磁石車輪を具備し当該磁石車輪を転動させることによって前記鋼管の外周を周方向に移動自在の本体フレームと、
前記本体フレームに支持される駆動装置と、
前記鋼管の外周に接するように前記本体フレームに支持されるブラシと、
前記本体フレームに支持され前記ブラシと前記駆動装置との間に介設される伝動機構とを具備することを特徴とする鋼管の研磨装置。 A device for polishing while moving the outer circumference of the steel pipe to be polished.
A main body frame having at least a pair of left and right magnet wheels attracted to the outer peripheral surface of the steel pipe and being movable in the circumferential direction by rolling the magnet wheels.
The drive device supported by the main body frame and
A brush supported by the main body frame so as to be in contact with the outer periphery of the steel pipe,
A steel pipe polishing device including a transmission mechanism supported by the main body frame and interposed between the brush and the driving device. 前記ブラシは、それぞれ前記鋼管の外周に接するように互いに左右に離れて平行に配置される一対からなり、前記鋼管の軸線に沿う支持軸により前記本体フレームに支持されるローラブラシであり、互いに反対方向に回転するように前記伝動機構に接続されることを特徴とする請求項１に記載の鋼管の研磨装置。 The brushes are a pair of roller brushes that are arranged in parallel on the left and right sides of each other so as to be in contact with the outer periphery of the steel pipe, and are supported by the main body frame by a support shaft along the axis of the steel pipe, and are opposite to each other. The steel pipe polishing apparatus according to claim 1, wherein the transmission mechanism is connected to the transmission mechanism so as to rotate in a direction. 研磨対象である鋼管の外周を移動しつつ研磨するための装置であって、
前記鋼管の外周面に吸着する磁石車輪を具備し当該磁石車輪を転動させることによって前記鋼管の外周を周方向に移動自在の走行体と、この走行体に支持される本体とを具備し、
前記走行体は、前記鋼管の軸線直交方向である左右に離れて配置される少なくとも一対の前記磁石車輪と、これらの磁石車輪を支持する枠体とを具備し、
前記本体は、前記枠体に支持される本体フレームと、当該本体フレームに支持される駆動装置及びブラシと、当該ブラシと前記駆動装置との間に介設される伝動機構とを具備することを特徴とする鋼管の研磨装置。 A device for polishing while moving the outer circumference of the steel pipe to be polished.
A traveling body that is provided with magnet wheels that are attracted to the outer peripheral surface of the steel pipe and that can move around the outer periphery of the steel pipe in the circumferential direction by rolling the magnet wheels, and a main body that is supported by the traveling body are provided.
The traveling body includes at least a pair of the magnet wheels arranged apart from each other on the left and right sides orthogonal to the axis of the steel pipe, and a frame body that supports these magnet wheels.
The main body includes a main body frame supported by the frame body, a driving device and a brush supported by the main body frame, and a transmission mechanism interposed between the brush and the driving device. A characteristic steel pipe polishing device. 前記ブラシは、それぞれ前記鋼管の外周に接するように互いに左右に離れて平行に配置される一対からなり、前記鋼管の軸線に沿う支持軸により前記本体フレームに支持されるローラブラシであり、互いに反対方向に回転するように前記伝動機構に接続されることを特徴とする請求項３に記載の鋼管の研磨装置。 The brushes are a pair of roller brushes that are arranged in parallel on the left and right sides of each other so as to be in contact with the outer periphery of the steel pipe, and are supported by the main body frame by a support shaft along the axis of the steel pipe, and are opposite to each other. The steel pipe polishing apparatus according to claim 3, wherein the transmission mechanism is connected to the transmission mechanism so as to rotate in a direction. 前記駆動装置は、作業者が握って前記走行体を移動させるためのハンドルを具備することを特徴とする請求項1又は３に記載の鋼管の研磨装置。 The steel pipe polishing device according to claim 1 or 3, wherein the drive device includes a handle for the operator to grasp and move the traveling body. 前記磁石車輪は、前記鋼管の径に応じて相互の間隔を変更可能に設けられることを特徴とする請求項1又は３に記載の鋼管の研磨装置。 The steel pipe polishing apparatus according to claim 1 or 3, wherein the magnet wheels are provided so as to be capable of changing the distance between the magnet wheels according to the diameter of the steel pipe. 前記磁石車輪は、前記鋼管の外周を螺旋状に転動できるように、車軸の向きを変更可能に設けられることを特徴とする請求項1又は３に記載の鋼管の研磨装置。 The steel pipe polishing apparatus according to claim 1 or 3, wherein the magnet wheel is provided so that the direction of the axle can be changed so that the outer circumference of the steel pipe can be spirally rolled. 請求項１又は３に記載の研磨装置を用いてほぼ垂直に立設された鋼管の外周を研磨する方法であって、
前記研磨装置を前記鋼管の上部に係止されたトルクリールから引き出されたワイヤの下端に吊支し、前記研磨装置の自重の一部を前記トルクリールに負担させながら手動にて前記研磨装置を移動させることを特徴とする鋼管の研磨方法。 A method of polishing the outer periphery of a steel pipe erected substantially vertically by using the polishing apparatus according to claim 1 or 3.
The polishing device is suspended at the lower end of a wire drawn from a torque reel locked to the upper part of the steel pipe, and the polishing device is manually operated while bearing a part of its own weight of the polishing device on the torque reel. A method for polishing a steel pipe, which comprises moving it. ほぼ垂直に立設された鋼管を挟んで対向配置された請求項１又は３に記載の研磨装置の一対の相互間を前記鋼管を抱持するように連結体で連結し、手動にて前記一対の研磨装置を同時に稼動させながら移動させることを特徴とする鋼管の研磨方法。 The pair of polishing devices according to claim 1 or 3, which are arranged so as to face each other with a steel pipe erected substantially vertically, are connected by a connecting body so as to hold the steel pipe, and the pair is manually connected. A method for polishing a steel pipe, which comprises moving the polishing equipment of the above while operating them at the same time. ほぼ垂直に立設された鋼管の外周に請求項１又は３に記載の研磨装置２つを高さをずらして対向配置すると共に、互いに連結体で連結し、同時に稼動させながら鋼管の外周を螺旋状に移動させることを特徴とする鋼管の研磨方法。 The two polishing devices according to claim 1 or 3 are arranged to face each other on the outer circumference of a steel pipe erected substantially vertically at different heights, and are connected to each other by a connecting body, and the outer circumference of the steel pipe is spiraled while operating at the same time. A method for polishing a steel pipe, which comprises moving the steel pipe into a shape.
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KR102622407B1 (en) * 2023-03-16 2024-01-09 한전케이피에스 주식회사 Grinder apparatus
JP7440361B2 (en) 2020-06-30 2024-02-28 東日本旅客鉄道株式会社 Steel pipe polishing equipment

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