JP2014070432A - Screw-knotted reinforcing-bar turning jig - Google Patents
Screw-knotted reinforcing-bar turning jig Download PDFInfo
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- JP2014070432A JP2014070432A JP2012217627A JP2012217627A JP2014070432A JP 2014070432 A JP2014070432 A JP 2014070432A JP 2012217627 A JP2012217627 A JP 2012217627A JP 2012217627 A JP2012217627 A JP 2012217627A JP 2014070432 A JP2014070432 A JP 2014070432A
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Abstract
Description
本発明は、ねじ節鉄筋どうしを機械式継手により接続する際に用いるねじ節鉄筋回転用治具に関する。 The present invention relates to a screw joint reinforcing bar rotation jig used when screw joints are connected by a mechanical joint.
従来、例えば、橋脚の構築工事では、橋脚主筋が上下に連結される配筋作業が行われ、あるいは、建物の建築工事では、柱主筋が上下に連結される配筋作業が行われる。
そして、天候や技量に左右されず工期の短縮化を図るため、主筋としてねじ節鉄筋を用い、継手として、ねじ節鉄筋の雄ねじに螺合する雌ねじが形成された機械式継手を用いる場合が多い(特許文献1)。
機械式継手を用いる場合、上記の橋脚工事、建築工事のいずれの工事においても、下方のねじ節鉄筋の上端の雄ねじに機械式継手の下部の雌ねじを結合させ、この機械式継手の上部の雌ねじに対して、上方のねじ節鉄筋を回転させる作業が行われる。
従来、このねじ節鉄筋を回転させる作業は、作業員がパイプレンチやチェーンレンチなどの大型の工具を用い、それらをねじ節鉄筋に係合させ、回転させているのが実情である。
Conventionally, for example, in the construction work of a pier, a reinforcement work in which the pier main bars are vertically connected is performed, or in the construction work of a building, a reinforcement work in which the column main bars are vertically connected is performed.
And, in order to shorten the construction period regardless of the weather and skill, there are many cases where a mechanical joint in which a threaded joint is used as a main reinforcement and a female thread is formed as a joint. (Patent Document 1).
When a mechanical joint is used, in both the pier construction and construction work described above, the lower female screw is joined to the upper male screw on the lower screw joint, and the upper female screw on the mechanical joint is connected. On the other hand, the work of rotating the upper screw joint reinforcing bar is performed.
Conventionally, in the work of rotating the screw rebar, the actual situation is that an operator uses a large tool such as a pipe wrench or a chain wrench to engage the screw rebar and rotate it.
しかしながら、パイプレンチやチェーンレンチなどの大型の工具はねじ節鉄筋に係合させにくく、そのため作業効率を高めることができず、また、鉄筋を回転させにくいため、それら大型の工具を落とし易いという問題があった。
本発明は前記事情に鑑み案出されたものであって、本発明の目的は、機械式継手に結合させるためのねじ節鉄筋の回転作業を簡単に行なえるねじ節鉄筋回転用治具を提供することにある。
However, large tools such as pipe wrench and chain wrench are difficult to engage with the threaded reinforcing bar, so that the work efficiency cannot be increased, and it is difficult to rotate the reinforcing bar, so it is easy to drop these large tools. was there.
The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a screw joint reinforcing bar rotation jig capable of easily performing a rotating operation of a screw joint reinforcing bar for coupling to a mechanical joint. There is to do.
前記目的を達成するため本発明のねじ節鉄筋回転用治具は、ねじ節鉄筋の雄ねじに螺合可能な雌ねじが設けられた鉄筋結合部と、前記鉄筋結合部と同軸上に一体的に設けられた六角柱状の工具用係合部とを備えることを特徴とする。 In order to achieve the above object, a screw joint reinforcing bar rotating jig according to the present invention is provided integrally with a reinforcing bar coupling portion provided with a female screw that can be screwed into a male thread of a screw joint reinforcing rod, and coaxially with the reinforcing bar coupling portion. And a hexagonal column-shaped tool engaging portion.
本発明によれば、工具用係合部は六角柱状を呈していることから、スパナやラチェットなどの小型の工具を簡単に確実に係合でき、また、小型の工具を回転させることでねじ節鉄筋を機械式継手に簡単に結合させることができる。
したがって、ねじ節鉄筋の機械式継手への結合作業の効率を格段と高めることが可能となり、また、工具を落とすという不具合を防止する上でも有利となる。
According to the present invention, since the tool engaging portion has a hexagonal column shape, a small tool such as a spanner or a ratchet can be easily and reliably engaged, and the screw joint can be rotated by rotating the small tool. Reinforcing bars can be easily connected to mechanical joints.
Therefore, it is possible to remarkably increase the efficiency of the work of joining the screw joint to the mechanical joint, and it is advantageous for preventing the problem of dropping the tool.
以下、本発明の実施の形態を図面にしたがって説明する。
図1に示すように、本実施の形態のねじ節鉄筋回転用治具10は金属製であり、鉄筋結合部12と工具用係合部14とを備えている。
鉄筋結合部12は、筒状の本体部1202と、本体部1202の軸方向の一端を閉塞する蓋部1204とを有している。
本体部1202の内周部には、ねじ節鉄筋50の雄ねじ5002に螺合可能な雌ねじ1206が設けられている。本実施の形態では、本体部1202は、市販品である機械式継手の雌ねじを有する部分が切断されることで構成され、雌ねじ1206の長さは、ねじ節鉄筋50の雄ねじ5002が螺合される機械式継手の雌ねじの長さよりも小さい寸法で形成されている。
工具用係合部14は六角柱状を呈し、蓋部1204上に、鉄筋結合部12と同軸上で一体的に設けられている。本実施の形態では、工具用係合部14は、市販品である二つのナットNが同軸上で溶接されることで構成されている。
図2に示すように、工具用係合部14の対向する2面間の間隔L1は、ねじ節鉄筋50の対向する2面間の間隔L2よりも小さい。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the screw joint reinforcing
The reinforcing
A
The
As shown in FIG. 2, the distance L <b> 1 between the two opposing faces of the
次に、ねじ節鉄筋回転用治具10の使用方法について説明する。
例えば、橋脚を構築する際、鉄筋の配筋作業を行ない、コンクリート型枠を作り、コンクリートを打設し、コンクリートの養生後、その上方で鉄筋の配筋作業を行ない、コンクリート型枠を作り、コンクリートを打設し、このような作業の繰り返しにより橋脚を上方へと構築していく。
図3に示すように、上述の配筋作業では、コンクリートに埋設された下方の橋脚主筋をなすねじ節鉄筋50の上端に機械式継手52を結合し、この機械式継手52に、上方の橋脚主筋をなすねじ節鉄筋50の下端が結合される。
Next, a method of using the screw joint reinforcing
For example, when building a pier, rebar reinforcement work is done, concrete formwork is made, concrete is placed, concrete is cured, then rebar placement work is performed above it, and concrete formwork is made, Concrete is cast and the pier is built upward by repeating such operations.
As shown in FIG. 3, in the above-described bar arrangement work, a
本実施の形態では、上方の橋脚主筋をなすねじ節鉄筋50の上端付近の足場上において、まず、上方の橋脚主筋をなすねじ節鉄筋50の上端の雄ねじ5002に、ねじ節鉄筋回転用治具10の鉄筋結合部12の雌ねじ1206を結合させる。この雄ねじ5002と雌ねじ1206との結合は、ねじ節鉄筋回転用治具10を直接回転させてもよく、あるいは、工具用係合部14にスパナやラチェットなどの小型の工具を係合させ、工具を回転させることで行なってもよい。
上方の橋脚主筋をなすねじ節鉄筋50の上端にねじ節鉄筋回転用治具10を結合させたならば、次に、工具用係合部14にスパナやラチェットなどの小型の工具を係合させ、工具を回転させることで上方の橋脚主筋をなすねじ節鉄筋50を回転させ、機械式継手52の上部に、上方の橋脚主筋をなすねじ節鉄筋50の下端の雄ねじ5002を結合させることで行なう。
上方の橋脚主筋をなすねじ節鉄筋50の下端の雄ねじ5002を機械式継手52の上部に結合したならば、ねじ節鉄筋回転用治具10を、上方の橋脚主筋をなすねじ節鉄筋50の上端から取り外し、上記と同様に、上方の橋脚主筋をなすねじ節鉄筋50の下端の雄ねじ5002をねじ節鉄筋回転用治具10を、上方の橋脚主筋をなすねじ節鉄筋50の上端から取り外し機械式継手52の上部に順次結合させる。
この場合、雌ねじ1206の長さは、ねじ節鉄筋50の雄ねじ5002が螺合される機械式継手の雌ねじの長さよりも小さい寸法で形成されているので、ねじ節鉄筋回転用治具10の、上方の橋脚主筋をなすねじ節鉄筋50の上端からの取り外しがより簡単になされる。
In the present embodiment, on the scaffold in the vicinity of the upper end of the screw
If the screw joint reinforcing
When the
In this case, the length of the
本実施の形態では、工具用係合部14は六角柱状を呈していることから、スパナやラチェットなどの小型の工具を簡単に確実に係合でき、また、小型の工具を回転させることで橋脚主筋の下端を機械式継手52の上部に簡単に結合させることができる。
したがって、橋脚主筋の機械式継手52への結合作業の効率を格段と高めることが可能となり、また、工具を落とすという不具合を防止する上でも有利となる。
また、実施の形態では、工具用係合部14の対向する2面間の間隔L1を、ねじ節鉄筋50の対向する2面間の間隔L2よりも小さい寸法にしたので、より小型の工具を用いることができ、橋脚主筋の機械式継手52への結合作業の効率を格段と高める上で有利となる。
In the present embodiment, since the
Therefore, it is possible to remarkably increase the efficiency of the work of joining the pier main reinforcement to the
In the embodiment, since the distance L1 between the two opposing surfaces of the
また、鉄筋結合部12の外面を、鉄筋の色とは別の色で着色しておくと、ねじ節鉄筋回転用治具10が目立つため、ねじ節鉄筋回転用治具10の置き忘れを防止する上で有利となる。この場合の色は、例えば、明度および彩度が高く鉄筋に対して目立つ色、例えば、赤色や黄色などが好適となる。
Further, if the outer surface of the reinforcing
なお、本発明は土木工事に限定されず、建築工事など、ねじ節鉄筋50を用いるその他の工事全般に広く適用される。
In addition, this invention is not limited to civil engineering work, but is widely applied to other general constructions using the screw
10……ねじ節鉄筋回転用治具、12……鉄筋結合部、1202……本体部、1204……蓋部、1206……雌ねじ、14……工具用係合部、50……ねじ節鉄筋、5002……雌ねじ、52……機械式継手。
DESCRIPTION OF
Claims (5)
前記鉄筋結合部と同軸上に一体的に設けられた六角柱状の工具用係合部と、
を備えることを特徴とするねじ節鉄筋回転用治具。 A reinforcing bar coupling portion provided with a female thread that can be screwed into a male thread of a threaded reinforcing bar;
Hexagonal column-shaped tool engaging portion provided integrally on the same axis as the reinforcing bar coupling portion;
A screw joint reinforcing bar rotation jig characterized by comprising:
前記係合部は前記蓋部上に設けられている、
ことを特徴とする請求項1記載のねじ節鉄筋回転用治具。 The reinforcing bar coupling portion includes a main body portion that has a cylindrical shape and is provided with the female screw on the inner surface thereof, and a lid portion that closes one end in the axial direction of the main body portion,
The engaging portion is provided on the lid portion,
The screw joint reinforcing bar rotating jig according to claim 1.
ことを特徴とする請求項1または2記載のねじ節鉄筋回転用治具。 An interval between two opposing surfaces of the hexagonal columnar tool engaging portion is smaller than an interval between two opposing surfaces of the screw joint reinforcing bar,
The screw joint reinforcing bar rotating jig according to claim 1 or 2.
ことを特徴とする請求項1乃至3に何れか1項記載のねじ節鉄筋回転用治具。 The length of the internal thread of the reinforcing bar connecting portion is formed with a dimension smaller than the length of the internal thread of a mechanical joint to which the external thread of the thread joint rebar is screwed.
The screw joint reinforcing bar rotating jig according to any one of claims 1 to 3, wherein
ことを特徴とする請求項1乃至4に何れか1項記載のねじ節鉄筋回転用治具。 The outer surface of the reinforcing bar connecting portion is colored with a conspicuous color with respect to the screw-type reinforcing bar,
The screw joint reinforcing bar rotating jig according to any one of claims 1 to 4, characterized in that
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102015102006A1 (en) | 2014-03-28 | 2015-10-01 | Toyota Jidosha Kabushiki Kaisha | Electronic key system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3888596A (en) * | 1973-05-23 | 1975-06-10 | William F Kelly | Jacking anchor for post-tensioning concrete |
JPS6434178U (en) * | 1987-08-19 | 1989-03-02 | ||
JPH1037385A (en) * | 1996-07-25 | 1998-02-10 | Fuji Bolt Seisakusho:Kk | Reinforcement jointing structure |
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2012
- 2012-09-28 JP JP2012217627A patent/JP6166522B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3888596A (en) * | 1973-05-23 | 1975-06-10 | William F Kelly | Jacking anchor for post-tensioning concrete |
JPS6434178U (en) * | 1987-08-19 | 1989-03-02 | ||
JPH1037385A (en) * | 1996-07-25 | 1998-02-10 | Fuji Bolt Seisakusho:Kk | Reinforcement jointing structure |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015102006A1 (en) | 2014-03-28 | 2015-10-01 | Toyota Jidosha Kabushiki Kaisha | Electronic key system |
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