JP2022064522A - Sling, and oblique pipe correction method and pipe transferring method - Google Patents

Sling, and oblique pipe correction method and pipe transferring method Download PDF

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JP2022064522A
JP2022064522A JP2020173209A JP2020173209A JP2022064522A JP 2022064522 A JP2022064522 A JP 2022064522A JP 2020173209 A JP2020173209 A JP 2020173209A JP 2020173209 A JP2020173209 A JP 2020173209A JP 2022064522 A JP2022064522 A JP 2022064522A
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sling
spiral portion
steel pipe
hook
pipe
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JP7310776B2 (en
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真一 山田
Shinichi Yamada
祐三 久保
Yuzo Kubo
哲昇 岡部
Tessho Okabe
圭 稲垣
Kei Inagaki
大輝 宗田
Daiki Muneda
正弥 小林
Masaya Kobayashi
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JFE Steel Corp
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JFE Steel Corp
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Abstract

To provide a sling in which one-round-turn slinging operation can be performed only by a crane operator, and an oblique pipe correction method and a pipe transferring method by use of the sling.SOLUTION: A sling 1 comprises: a flexible sling belt 10 which is suspended by a hook 3 of a crane 2 and hoists a steel pipe 4; and an elastic core material 20. The sling belt 10 includes both end parts which are suspended by the hook 3; and a spiral part 13 which is between both end parts and winds around outer periphery of the steel pipe 4 at least one round or more. The core material 20 is attached to the spiral part 13 to keep the spiral part 13 in a spiral shape with the sling belt 10 suspended by the hook 3 without weight of the steel pipe 4.SELECTED DRAWING: Figure 1

Description

本発明は、クレーンで荷を吊り上げる場合に、吊り具として使用するスリングならびに、そのスリングを用いての斜管修正方法および管搬送方法に関する。 The present invention relates to a sling used as a hanger when lifting a load with a crane, and a method for correcting an oblique pipe and a method for transporting a pipe using the sling.

従来のベルト状のスリングを用いて、鋼管を吊り上げ下げをする場合、鋼管を吊っていない状態では、ベルト状のスリングは、その柔軟性により、無負荷の状態においては下方に垂れ下ってしまうため、鋼管の底部にベルト状のスリングを通して吊り上げるには、玉掛作業員が治具を介するなどして押し広げて鋼管を通す作業が必要となる。そのため、作業性が悪く、また、治具などの必要性から経済性も悪かった。 When a steel pipe is lifted and lowered using a conventional belt-shaped sling, the belt-shaped sling hangs downward under no load due to its flexibility when the steel pipe is not suspended. In order to lift the belt-shaped sling through the bottom of the steel pipe, it is necessary for the slinging worker to spread it out through a jig or the like and pass the steel pipe through it. Therefore, the workability was poor, and the economy was also poor due to the need for jigs and the like.

このため、特許文献１に示すように、クレーンのフックに掛けることによって、輪状にして吊り下げられたスリングの両側部の治具を固定端として棒バネを取り付け、さらにスリング底部の両側部の治具を固定端として板ばねを固着して、スリングの上部と下部が、これらのバネの弾性力によって押し広げられて展張し一定の形状を保つ荷役用スリングが提案されている。 Therefore, as shown in Patent Document 1, a rod spring is attached by hooking the hook of the crane with the jigs on both sides of the sling suspended in a ring shape as fixed ends, and further, the both sides of the bottom of the sling are cured. A cargo handling sling has been proposed in which a leaf spring is fixed with a jig as a fixed end, and the upper and lower parts of the sling are expanded and expanded by the elastic force of these springs to maintain a constant shape.

実開平３－１２２０７３号公報Jikkenhei 3-122073 Gazette

特許文献１で提案されている荷役用スリングは、鋼管等の荷の下側半分にだけスリングを掛ける、いわゆる、半掛けの吊り方に使用されるものであって、荷にスリングを１回巻きつけて掛ける、いわゆる、あだ巻き掛けの吊り方については開示されていない。あだ巻き掛けは、つり角度によって、引き寄せられようとするワイヤロープの滑りを防止するために最も効果的な掛け方で、特に長尺物に有効である。そのため、あだ巻き掛けによって鋼管等の荷を吊るす機会はあるものの、その場合には、依然として、無負荷の状態においては、１回巻きつけたスリングの上側部分が下方に垂れ下ってしまうため、玉掛作業員が手でスリングを輪状に押し広げて鋼管を通す必要があった。 The cargo handling sling proposed in Patent Document 1 is used for a so-called half-hanging method in which a sling is hung only on the lower half of a load such as a steel pipe, and the sling is wound once on the load. The method of hanging the so-called "patent wrapping", which is attached and hung, is not disclosed. Ada wrapping is the most effective way to prevent the wire rope from slipping when it is pulled by the angle of suspension, and is especially effective for long objects. Therefore, although there is an opportunity to hang a load such as a steel pipe by wrapping it with a paddle, in that case, the upper part of the sling wound once will still hang down under no load. It was necessary for the sling worker to manually spread the sling in a ring shape and pass it through the steel pipe.

そこで、本発明は、上記の課題に着目してなされたものであり、スリングのあだ巻き掛けにおいて、玉掛け作業が容易に行えるスリングならびに、そのスリングを用いての斜管修正方法および管搬送方法を提供することを目的としている。 Therefore, the present invention has been made by paying attention to the above-mentioned problems, and is a sling in which slinging work can be easily performed in sling winding, and an oblique pipe correction method and a pipe transport method using the sling. Is intended to provide.

本発明の一態様は、クレーンのフックに吊り下げられて荷役物を吊り上げる柔軟性を備えたスリングベルトと、弾性を有する芯材と、を備えたスリングであって、スリングベルトは、フックに吊り下げられる両端部と、両端部の間であって、少なくとも荷役物の外周に一周以上巻かれる螺旋状部と、を有し、芯材は、螺旋状部に取り付けられて、スリングベルトが、フックに荷役物の荷重が加わらずに吊り下げられた状態において、芯材は螺旋状部を螺旋形状に保持するスリングである。
本発明の他の態様は、一態様のスリングを用いての斜管修正方法および管搬送方法である。 One aspect of the present invention is a sling provided with a sling belt having the flexibility of being suspended from a hook of a crane to lift a cargo-carrying object and an elastic core material, wherein the sling belt is suspended from the hook. It has both ends to be lowered and a spiral portion between the ends that is wound at least one round around the outer circumference of the cargo handling object, the core material is attached to the spiral portion, and the sling belt is hooked. The core material is a sling that holds the spiral portion in a spiral shape when the cargo is suspended without being loaded with a cargo handling object.
Another aspect of the present invention is a method of correcting a slanted pipe and a method of transporting a pipe using a sling of one aspect.

本発明の一態様によれば、玉掛け作業が容易に行えるスリングを提供できる。 According to one aspect of the present invention, it is possible to provide a sling in which slinging work can be easily performed.

本発明の実施形態に係るスリングを示す概略構成図である。It is a schematic block diagram which shows the sling which concerns on embodiment of this invention. 本発明の実施形態に係るスリングに用いられる芯材を示す概略構成図である。It is a schematic block diagram which shows the core material used for the sling which concerns on embodiment of this invention. 本発明の他の実施形態に係るスリングを示す概略構成図である。It is a schematic block diagram which shows the sling which concerns on other embodiment of this invention. 本発明の実施形態に係るスリングを用いて斜めに配置された管の修正方法の概略を示す図である。It is a figure which shows the outline of the modification method of the pipes arranged diagonally using the sling which concerns on embodiment of this invention. 本発明の実施形態に係るスリングを用いて管を移動させる搬送方法の概略を示す図である。It is a figure which shows the outline of the transport method which moves a pipe using the sling which concerns on embodiment of this invention.

以下の詳細な説明では、図面を参照して、本発明の実施形態を説明する。図面の記載において、同一又は類似の部分には同一又は類似の符号を付し、重複する説明を省略する。各図面は模式的なものであり、現実のものとは異なる場合が含まれる。また、以下に示す実施形態は、本発明の技術的思想を具体化するための装置や方法を例示するものであって、本発明の技術的思想は、構成部品の材質、構造、配置等を下記のものに特定するものでない。本発明の技術的思想は、特許請求の範囲に記載された請求項が規定する技術的範囲内において種々の変更を加えることができる。 In the following detailed description, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same or similar parts are designated by the same or similar reference numerals, and duplicate description will be omitted. Each drawing is schematic and may differ from the actual one. Further, the embodiments shown below exemplify devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention describes the materials, structures, arrangements, etc. of the components. It is not specific to the following. The technical idea of the present invention may be modified in various ways within the technical scope specified by the claims described in the claims.

図１は、実施形態に係るスリングを示す概略構成図である。図１に示すように、スリング１は、クレーン２のフック３と荷役物としての鋼管４との間に掛けられ、鋼管４の外周に少なくとも一周以上巻かれる、いわゆる、あだ巻き掛けに用いるスリングである。 FIG. 1 is a schematic configuration diagram showing a sling according to an embodiment. As shown in FIG. 1, the sling 1 is hung between the hook 3 of the crane 2 and the steel pipe 4 as a cargo handling object, and is wound around the outer circumference of the steel pipe 4 at least one round or more, that is, a sling used for so-called padding. Is.

スリング１は、合成繊維を素材として形成されて柔軟性を有するスリングベルト１０と、弾性を有する芯材２０とを備えている。スリングベルト１０は、両端部を備えたベルトであって、両端部に配置されて輪状に形成された環状部１１と、両方の環状部１１の間に配置する帯状のベルト部１２とを有しており、両方の環状部１１はクレーン２のフック３に引っかけられ、ベルト部１２は搬送対象となる鋼管４に巻き付けられて鋼管４を支持する部分を有している。 The sling 1 includes a sling belt 10 formed of a synthetic fiber as a material and having flexibility, and a core material 20 having elasticity. The sling belt 10 is a belt having both ends, and has an annular portion 11 arranged at both ends and formed in a ring shape, and a belt-shaped belt portion 12 arranged between both annular portions 11. Both the annular portions 11 are hooked on the hook 3 of the crane 2, and the belt portion 12 has a portion that is wound around the steel pipe 4 to be conveyed to support the steel pipe 4.

スリング１は、ベルト部１２に形成された螺旋状部１３を備える。螺旋状部１３は、玉掛において、いわゆる、あだ巻き掛けをするために、鋼管４の外周に一周巻かれる部分である。より詳しくは、螺旋状部１３は、鋼管４の外周に一周半（５４０度、以下、これを回転角が５４０度という。）、螺旋状に巻かれる部分である。なお、本実施形態の螺旋状部１３は、鋼管４の外周に一周半巻かれる螺旋形状であるが、鋼管４の外周に一周半以上巻かれれば、螺旋部２１の回転角は５４０度以上、例えば、回転角が９００度（２周半）の螺旋形状であっても構わない。 The sling 1 includes a spiral portion 13 formed on the belt portion 12. The spiral portion 13 is a portion of the sling that is wound around the outer circumference of the steel pipe 4 in order to perform so-called padding. More specifically, the spiral portion 13 is a portion spirally wound around the outer circumference of the steel pipe 4 for one and a half turns (540 degrees, hereinafter referred to as a rotation angle of 540 degrees). The spiral portion 13 of the present embodiment has a spiral shape that is wound around the outer circumference of the steel pipe 4 by one and a half turns, but if it is wound around the outer circumference of the steel pipe 4 by one and a half or more, the rotation angle of the spiral portion 21 is 540 degrees or more. For example, it may have a spiral shape with a rotation angle of 900 degrees (two and a half laps).

芯材２０は、φ１６ｍｍから成る材質ＳＳ４００であって熱処理済のピアノ線によって弾性を有し、図２に示すように、中心側に空間を有する螺旋状に形成されている。芯材２０は、螺旋状に形成される螺旋部２１と、螺旋部２１の両方の端部２２から直線状に伸びる直線部２３を有しており、直線部２３は互いに略平行である。螺旋部２１は、ベルト部１２に形成された螺旋状部１３の径と長さが略同じである螺旋状に形成されている。従って、螺旋部２１の回転角は５４０度である。なお、本実施形態の螺旋部２１は、搬送対象となる鋼管４の外周に一周半巻かれる部分であるが、螺旋状部１３の径と長さが略同じである螺旋状に形成されていれば、螺旋部２１の回転角は５４０度あるいはそれ以上であって、螺旋部２１は搬送対象となる鋼管４の外周に一周半あるいはそれ以上巻かれる部分である。 The core material 20 is a material SS400 made of φ16 mm, has elasticity by a heat-treated piano wire, and is formed in a spiral shape having a space on the center side as shown in FIG. The core material 20 has a spiral portion 21 formed in a spiral shape and a straight line portion 23 extending linearly from both end portions 22 of the spiral portion 21, and the straight line portions 23 are substantially parallel to each other. The spiral portion 21 is formed in a spiral shape having substantially the same diameter and length as the spiral portion 13 formed in the belt portion 12. Therefore, the angle of rotation of the spiral portion 21 is 540 degrees. The spiral portion 21 of the present embodiment is a portion that is wound around the outer circumference of the steel pipe 4 to be conveyed by one and a half turns, but is formed in a spiral shape in which the diameter and length of the spiral portion 13 are substantially the same. For example, the rotation angle of the spiral portion 21 is 540 degrees or more, and the spiral portion 21 is a portion wound around the outer circumference of the steel pipe 4 to be conveyed by one and a half turns or more.

芯材２０の螺旋部２１は、複数の取付バンド６によって、ベルト部１２の螺旋状部１３に一体的に取り付けられ、芯材２０の直線部２３の一方は、ベルト部１２の一方の端部側に、芯材２０の直線部２３の他方は、ベルト部１２の他方の端部側に、取付バンド６によって、取り付けられる。なお、本実施形態では、芯材２０は直線部２３を有しているが、直線部２３を有さず螺旋部２１だけであっても構わない。ただし、直線部２３を有することが望ましい。直線部２３を有することによって、クレーン２のフック３に引っかけられたスリングベルト１０が鋼管４に干渉することを抑制できるからである。 The spiral portion 21 of the core material 20 is integrally attached to the spiral portion 13 of the belt portion 12 by a plurality of mounting bands 6, and one of the straight portions 23 of the core material 20 is one end of the belt portion 12. On the side, the other end of the straight portion 23 of the core material 20 is attached to the other end side of the belt portion 12 by the attachment band 6. In the present embodiment, the core material 20 has the straight portion 23, but the core material 20 may not have the straight portion 23 and may be only the spiral portion 21. However, it is desirable to have a straight portion 23. This is because having the straight portion 23 can prevent the sling belt 10 hooked on the hook 3 of the crane 2 from interfering with the steel pipe 4.

芯材２０は弾性を有し、螺旋部２１がベルト部１２の螺旋状部１３に一体的に取り付けられるため、フック３にスリング１が、鋼管４の荷重が加わらずに吊り下げられ状態において、螺旋状部１３は螺旋形状を保持することができる。従って、あだ巻き掛けの吊り方で鋼管４を吊る場合に、玉掛作業員によってスリング１を輪状に押し広げる作業を行わなくても、クレーン作業者だけで、スリング１の螺旋状部１３に鋼管４を通すことができ、あだ巻き掛けするこが可能であるので、玉掛け作業の経済性、作業性の効率化が図れる。また、治具を用いてスリングを輪状に押し広げる従来の作業と異なり、治具の取り付け作業、取り外し作業がないため、玉掛け作業の経済性、作業性の効率化が図れる。 Since the core material 20 has elasticity and the spiral portion 21 is integrally attached to the spiral portion 13 of the belt portion 12, the sling 1 is suspended from the hook 3 without the load of the steel pipe 4 being applied. The spiral portion 13 can maintain the spiral shape. Therefore, when the steel pipe 4 is hung by the method of suspending the sling, the crane operator alone does not have to spread the sling 1 in a ring shape by the slinging worker, and the steel pipe is attached to the spiral portion 13 of the sling 1. Since the 4 can be passed through and can be wound around the spiral pipe, the economic efficiency of the slinging work and the efficiency of the workability can be improved. Further, unlike the conventional work of spreading the sling in a ring shape using a jig, since there is no work of attaching and removing the jig, the economic efficiency of the slinging work and the efficiency of workability can be improved.

また、芯材２０は弾性を有して螺旋状に形成され、直線部２３の一方は、ベルト部１２の一方の端部側に、直線部２３の他方は、ベルト部１２の他方の端部側に、取付バンド６によって、取り付けられているため、あだ巻き掛けの吊り方で鋼管４を吊り上げた場合に、鋼管４の自重によって芯材２０の螺旋部２１が変形して鋼管４を締め付けるので、鋼管４がスリング１から抜け落ちることを抑制することができる。すなわち、芯材２０は、端部が無い閉じた輪状ではなく、両端部を備えた螺旋状に形成されているため、端部が無い閉じた輪状の場合に比べて変形が容易である。従って、鋼管４を締め付けるのに適している。 Further, the core material 20 has elasticity and is formed in a spiral shape, one of the straight portions 23 is on one end side of the belt portion 12, and the other of the straight portions 23 is the other end of the belt portion 12. Since the steel pipe 4 is mounted on the side by the mounting band 6, when the steel pipe 4 is lifted by the method of hanging the sword, the spiral portion 21 of the core material 20 is deformed by the weight of the steel pipe 4 and the steel pipe 4 is tightened. Therefore, it is possible to prevent the steel pipe 4 from falling out of the sling 1. That is, since the core material 20 is formed in a spiral shape having both ends instead of a closed ring shape without ends, it is easier to deform than in the case of a closed ring shape without ends. Therefore, it is suitable for tightening the steel pipe 4.

なお、図１に示すように、芯材２０の螺旋部２１はベルト部１２に取付バンド６によって取り付けられているが、例えば、図３に示すように、ベルト部１２を袋状に形成し、ベルト部１２の内部に納めて取り付けても構わない。この場合、芯材２０は、例えば、直線部２３を有しない、螺旋部２１だけで構成されていても構わない。こうすることによって、芯材２０が剥き出しにならないため、鋼管等の荷役物に傷がつくことを防止することができる。 As shown in FIG. 1, the spiral portion 21 of the core material 20 is attached to the belt portion 12 by the attachment band 6. For example, as shown in FIG. 3, the belt portion 12 is formed in a bag shape. It may be installed inside the belt portion 12. In this case, the core material 20 may be composed of only the spiral portion 21, which does not have the straight portion 23, for example. By doing so, since the core material 20 is not exposed, it is possible to prevent the cargo handling object such as the steel pipe from being scratched.

次に、図４を参照して、スリング１を用いた、あだ巻き掛けの吊り方で、土台の上に斜めに配置された鋼管４を正しい向きに置換える斜管修正方法について、以下に、説明する。
（１）図４の（ａ）に示すように、斜めに配置された鋼管４の一端側の位置まで、クレーン２を移動させ、フック３に吊り下げられたスリング１の螺旋状部１３の高さが鋼管４の高さと同じ位置になるまでフック３を下げる。
（２）図４の（ｂ）に示すように、クレーン２を移動させて、螺旋状部１３を鋼管４の一端側に通す。
（３）図４の（ｃ）、（ｄ）に示すように、フック３を上昇させ、鋼管４の一端側を吊り上げる。
（４）クレーン２を移動させて、斜めに配置された鋼管４の一端側の位置を正しい位置に移動させる。
（５）図４の（ｅ）に示すように、鋼管４の一端側を正しい位置に移動させた後、フック３を下降させて鋼管４の一端側を吊り下げ、鋼管４の一端側を所定位置に置く。
（６）図４の（ｅ）の矢印で示すように、螺旋状部１３の螺旋形状が緩んで、鋼管４の一端側から抜ける状態になったことを確認してからクレーン２を移動させて、螺旋状部１３を鋼管４の一端側から外す。 Next, with reference to FIG. 4, the method of correcting the slanted pipe in which the steel pipe 4 diagonally arranged on the base is replaced in the correct direction by the method of suspending the hook by using the sling 1 is described below. ,explain.
(1) As shown in (a) of FIG. 4, the crane 2 is moved to a position on one end side of the diagonally arranged steel pipe 4, and the height of the spiral portion 13 of the sling 1 suspended from the hook 3 is high. Lower the hook 3 until it is at the same height as the steel pipe 4.
(2) As shown in (b) of FIG. 4, the crane 2 is moved to pass the spiral portion 13 to one end side of the steel pipe 4.
(3) As shown in (c) and (d) of FIG. 4, the hook 3 is raised and one end side of the steel pipe 4 is lifted.
(4) The crane 2 is moved to move the position on one end side of the diagonally arranged steel pipe 4 to the correct position.
(5) As shown in FIG. 4 (e), after moving one end side of the steel pipe 4 to the correct position, the hook 3 is lowered to suspend one end side of the steel pipe 4, and one end side of the steel pipe 4 is designated. Put in position.
(6) As shown by the arrow in (e) of FIG. 4, the crane 2 is moved after confirming that the spiral shape of the spiral portion 13 is loosened and is in a state of being pulled out from one end side of the steel pipe 4. , The spiral portion 13 is removed from one end side of the steel pipe 4.

スリング１は、弾性を有する芯材２０によって、スリング１がクレーン２のフック３に鋼管４の荷重が加わらずに吊り下げられ状態において、螺旋状部１３を螺旋形状に保持することができるので、玉掛作業員によってスリング１を輪状に押し広げる作業を行わなくても、クレーン作業者だけでスリング１を鋼管４にあだ巻き掛けするこが可能である。また、あだ巻き掛けの吊り方で鋼管４の一端側だけを吊り上げて、鋼管４が高さ方向で斜めの状態になっても、鋼管４の自重によって芯材２０の螺旋部２１が変形して鋼管４を締め付けるため、鋼管４がスリング１から抜け落ちることがない。また、鋼管４を移動させて所定位置に置くと、スリング１に鋼管４の荷重が加わらなくなるため、螺旋部２１の締め付けが緩み、クレーン作業者だけで鋼管４からスリング１を外すことができる。従って、斜めに配置された鋼管４を正しい向きに置換える斜管修正の作業を、クレーン作業者だけで行うことができる。そのため、経済性、作業性の効率化が図れると共に、災害リスクを軽減することができる。 Since the sling 1 can hold the spiral portion 13 in a spiral shape in a state where the sling 1 is suspended by the elastic core material 20 without applying the load of the steel pipe 4 to the hook 3 of the crane 2. It is possible for the crane operator alone to wind the sling 1 around the steel pipe 4 without the slinging operator performing the work of spreading the sling 1 in a ring shape. Further, even if only one end side of the steel pipe 4 is lifted by the method of suspending the hook, and the steel pipe 4 becomes slanted in the height direction, the spiral portion 21 of the core material 20 is deformed by the weight of the steel pipe 4. Since the steel pipe 4 is tightened, the steel pipe 4 does not fall out of the sling 1. Further, when the steel pipe 4 is moved and placed at a predetermined position, the load of the steel pipe 4 is not applied to the sling 1, so that the spiral portion 21 is loosened and the crane operator can remove the sling 1 from the steel pipe 4. Therefore, the work of correcting the slanted pipe by replacing the slanted steel pipe 4 in the correct direction can be performed only by the crane operator. Therefore, it is possible to improve the efficiency of economy and workability and reduce the risk of disaster.

次に、図５を参照して、スリング１を用いて、鋼管４を移動させる搬送方法について、以下に説明する。
第１工程：クレーン２のフック３に２本のスリング１を吊り下げ、鋼管４の位置まで、クレーン２を移動させ、フック３に吊り下げられた２本のスリング１の螺旋状部１３の高さが鋼管４の高さと同じ位置になるようにフック３を降下させる。（図５（ａ））
第２工程：一方のスリング１の螺旋状部１３に、鋼管４の一端側を通す。
第３工程：他方のスリング１の螺旋状部１３に、鋼管４の他端側を通す。（図５（ｂ））
第４工程：フック３を上昇させて、一方のスリング１と他方のスリング１によって吊り下げられた鋼管４を吊り上げる。
第５工程：クレーン２を移動させて鋼管４を移動させる。（図５（ｃ））
第６工程：所定の位置でフック３を下降させて、鋼管４を吊り下げ、鋼管４を所定位置に置く。（図５（ｄ））
第７工程：螺旋状部１３の螺旋形状が緩んで、鋼管４から抜ける状態になったことを確認する。
第８工程：一方のスリング１の螺旋状部１３を、鋼管４の一端側から外す。
第９工程：他方のスリング１の螺旋状部１３を、鋼管４の他端側から外す。 Next, with reference to FIG. 5, a transport method for moving the steel pipe 4 using the sling 1 will be described below.
First step: Two slings 1 are suspended from the hook 3 of the crane 2, the crane 2 is moved to the position of the steel pipe 4, and the height of the spiral portion 13 of the two slings 1 suspended from the hook 3 is high. The hook 3 is lowered so that the crane is at the same height as the steel pipe 4. (Fig. 5 (a))
Second step: One end side of the steel pipe 4 is passed through the spiral portion 13 of one sling 1.
Third step: The other end side of the steel pipe 4 is passed through the spiral portion 13 of the other sling 1. (Fig. 5 (b))
Fourth step: The hook 3 is raised to lift the steel pipe 4 suspended by one sling 1 and the other sling 1.
Fifth step: The crane 2 is moved to move the steel pipe 4. (Fig. 5 (c))
Sixth step: The hook 3 is lowered at a predetermined position, the steel pipe 4 is suspended, and the steel pipe 4 is placed at a predetermined position. (Fig. 5 (d))
Seventh step: It is confirmed that the spiral shape of the spiral portion 13 is loosened and the steel pipe 4 is in a state of being pulled out.
Eighth step: The spiral portion 13 of one sling 1 is removed from one end side of the steel pipe 4.
Ninth step: The spiral portion 13 of the other sling 1 is removed from the other end side of the steel pipe 4.

スリング１は、弾性を有する芯材２０によって、スリング１がクレーン２のフック３に鋼管４の荷重が加わらずに吊り下げられ状態において、螺旋状部１３を螺旋形状に保持することができるので、簡易な作業でスリング１を鋼管４にあだ巻き掛けするこが可能である。そのため、経済性、作業性の効率化が図れると共に、災害リスクを軽減することができる。 Since the sling 1 can hold the spiral portion 13 in a spiral shape in a state where the sling 1 is suspended by the elastic core material 20 without applying the load of the steel pipe 4 to the hook 3 of the crane 2. It is possible to wind the sling 1 around the steel pipe 4 with a simple operation. Therefore, it is possible to improve the efficiency of economy and workability and reduce the risk of disaster.

本発明の実施形態では、芯材２０は、φ１６ｍｍから成る線材で形成されているが、弾性を有していれば、線材ではなく帯状部材で形成されていても構わない。たとえば、本実施態様では、芯材２０としてピアノ線を用いた例を示したが、ピアノ線以外の材料として、ばね用鋼線として広く用いられる各種のオイルテンパー線など、各種の鋼線を適用してもよい。芯材２０としては鋼線に限定されず、各種の金属材料や非金属材料を使用してもよい。芯材２０の径（太さ）は芯材の強度や弾性率、および、目標とする螺旋形状の曲率半径などを考慮して適宜選択してよい。なお、芯材２０は、中空の線材や帯状部材であってもよい。 In the embodiment of the present invention, the core material 20 is formed of a wire rod having a diameter of 16 mm, but may be formed of a strip-shaped member instead of the wire rod as long as it has elasticity. For example, in the present embodiment, an example in which a piano wire is used as the core material 20 is shown, but various steel wires such as various oil tempered wires widely used as steel wires for springs are applied as materials other than the piano wire. You may. The core material 20 is not limited to the steel wire, and various metal materials and non-metal materials may be used. The diameter (thickness) of the core material 20 may be appropriately selected in consideration of the strength and elastic modulus of the core material, the radius of curvature of the target spiral shape, and the like. The core material 20 may be a hollow wire rod or a strip-shaped member.

以上、限られた数の実施形態を参照しながら説明したが、権利範囲はそれらに限定されるものではなく、上記の開示に基づく実施形態の改変は、当業者にとって自明のことである。 Although the above description has been made with reference to a limited number of embodiments, the scope of rights is not limited thereto, and modifications of the embodiments based on the above disclosure are obvious to those skilled in the art.

１…スリング、２…クレーン、３…フック、４…鋼管、６…取付バンド、１０…スリングベルト、１１…環状部、１２…ベルト部、１３…螺旋状部、２０…芯材、２１…螺旋部、２２…端部、２３…直線部 1 ... sling, 2 ... crane, 3 ... hook, 4 ... steel pipe, 6 ... mounting band, 10 ... sling belt, 11 ... annular part, 12 ... belt part, 13 ... spiral part, 20 ... core material, 21 ... spiral Part, 22 ... end, 23 ... straight part

Claims (6)

クレーンのフックに吊り下げられて荷役物を吊り上げる柔軟性を備えたスリングベルトと、弾性を有する芯材と、を備えたスリングであって、
前記スリングベルトは、前記フックに吊り下げられる両端部と、前記両端部の間であって、少なくとも前記荷役物の外周に一周以上巻かれる螺旋状部と、を有し、
前記芯材は、前記螺旋状部に取り付けられて、
前記スリングベルトが、前記フックに前記荷役物の荷重が加わらずに吊り下げられた状態において、前記芯材は前記螺旋状部を螺旋形状に保持することを特徴とするスリング。 A sling with a sling belt that has the flexibility to be hung on a crane hook to lift cargo, and an elastic core material.
The sling belt has both ends suspended from the hook and a spiral portion between the two ends that is wound around at least one circumference of the cargo handling object.
The core material is attached to the spiral portion and is attached to the spiral portion.
The sling is characterized in that the core material holds the spiral portion in a spiral shape in a state where the sling belt is suspended without applying a load of the cargo handling object to the hook. 前記芯材は、螺旋状に形成されて前記荷役物の外周に一周以上巻かれる螺旋部を備えていることを特徴とする請求項１に記載のスリング。 The sling according to claim 1, wherein the core material is provided with a spiral portion that is formed in a spiral shape and is wound around the outer periphery of the cargo handling object by one or more turns. 前記芯材は、回転角が５４０度あるいはそれ以上の前記螺旋部を備えていることを特徴とする請求項２に記載のスリング。 The sling according to claim 2, wherein the core material includes the spiral portion having a rotation angle of 540 degrees or more. 所定間隔をおいて配置された複数のバンドによって、前記芯材は前記スリングベルトの前記螺旋状部に取り付けられることを特徴とする請求項１から３のいずれか１項に記載のスリング。 The sling according to any one of claims 1 to 3, wherein the core material is attached to the spiral portion of the sling belt by a plurality of bands arranged at predetermined intervals. 斜めに配置された管の配置を修正する斜管修正方法であって、
斜めに配置された前記管の一端側を、請求項１から４のいずれか１項に記載のスリングの前記螺旋状部で把持して吊り上げ、
吊り上げた前記管の一端を移動する、ことを特徴とする斜管修正方法。 It is a method of correcting diagonal pipes that corrects the arrangement of diagonally arranged pipes.
One end side of the diagonally arranged tube is gripped and lifted by the spiral portion of the sling according to any one of claims 1 to 4.
A method for correcting an oblique pipe, which comprises moving one end of the lifted pipe. クレーンのフックと略直線状の管との間にスリングを掛けて、前記管を搬送する管搬送方法であって、
前記フックに、請求項１から４のいずれか１項に記載のスリングを二つ掛け、
一方の前記スリングの前記螺旋状部に、前記管の一端側を通し、
他方の前記スリングの前記螺旋状部に、前記管の他端側を通し、
一方の前記スリングと他方の前記スリングを、前記クレーンの前記フックで吊り上げ、前記クレーンを移動させる、ことを特徴とする管搬送方法。 A pipe transport method in which a sling is hung between a crane hook and a substantially linear pipe to transport the pipe.
Hook the hook with two slings according to any one of claims 1 to 4.
Pass one end side of the tube through the spiral portion of one of the slings.
Pass the other end of the tube through the spiral portion of the other sling.
A pipe transport method comprising lifting one said sling and the other said sling with the hook of the crane and moving the crane.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842269U (en) * 1971-09-21 1973-05-30
JPS52141952A (en) * 1976-03-17 1977-11-26 Marino Systems Selffclamping system cargo hanging gear
JPS612380U (en) * 1984-06-11 1986-01-09 株式会社 大倉製作所 crane sling
JPS63161285U (en) * 1987-04-07 1988-10-21
US5330240A (en) * 1991-04-11 1994-07-19 Philippe Barra Closed sling with self-cinching loop
JPH08157178A (en) * 1994-06-16 1996-06-18 Meidai Kk Suspending belt and cargo suspending part shape keeping support tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842269U (en) * 1971-09-21 1973-05-30
JPS52141952A (en) * 1976-03-17 1977-11-26 Marino Systems Selffclamping system cargo hanging gear
JPS612380U (en) * 1984-06-11 1986-01-09 株式会社 大倉製作所 crane sling
JPS63161285U (en) * 1987-04-07 1988-10-21
US5330240A (en) * 1991-04-11 1994-07-19 Philippe Barra Closed sling with self-cinching loop
JPH08157178A (en) * 1994-06-16 1996-06-18 Meidai Kk Suspending belt and cargo suspending part shape keeping support tool

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