JP2000248739A - Sleeve fixture - Google Patents
Sleeve fixtureInfo
- Publication number
- JP2000248739A JP2000248739A JP11051116A JP5111699A JP2000248739A JP 2000248739 A JP2000248739 A JP 2000248739A JP 11051116 A JP11051116 A JP 11051116A JP 5111699 A JP5111699 A JP 5111699A JP 2000248739 A JP2000248739 A JP 2000248739A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- piping
- holding portion
- reinforcing bar
- reinforcement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉄筋コンクリート
構造物に設けられる貫通孔と鉄筋との間のかぶり厚さを
確保するスリーブ固定治具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeve fixing jig for securing a cover thickness between a through-hole provided in a reinforced concrete structure and a reinforcing bar.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】布基礎
やコンクリート梁、コンクリート柱等の鉄筋コンクリー
ト構造物には、給排水設備や電気設備、空調設備等の配
管や配線を行うための貫通孔が設けられる場合がある。
これらの貫通孔は、コンクリート型枠内の所望の位置
に、防水性を有する硬質な紙製の筒状管や、塩化ビニル
管等からなる配管（配線を含む）用スリーブを配設し、
しかる後にコンクリートを型枠内に打設することによっ
て鉄筋コンクリート構造物に形成される。2. Description of the Related Art Reinforced concrete structures such as cloth foundations, concrete beams and concrete columns are provided with through holes for piping and wiring of water supply / drainage equipment, electric equipment, air conditioning equipment, and the like. May be
These through holes are provided with piping (including wiring) sleeves made of a waterproof hard paper tube or a vinyl chloride tube at a desired position in the concrete formwork.
Thereafter, concrete is cast into a formwork to form a reinforced concrete structure.
【０００３】かかる配管用スリーブは、鉄筋の組立作業
を行う際に、あるいは鉄筋の組立作業の後に型枠内に配
設固定されることになるが、鉄筋の間を縫って配設され
るため、鉄筋に乗せ掛けたり鉄筋に近接してセットされ
る場合が多い。従って、特に配管用スリーブがコンクリ
ートの硬化後に撤去される紙質の筒状管等である場合に
は、形成された貫通孔の内面と鉄筋との間に有効なかぶ
り厚を確保することができなくなって、鉄筋の発錆を早
め、ひいてはに鉄筋コンクリート構造物の耐力の劣化を
促進することになる。[0003] Such a piping sleeve is fixed in the formwork when assembling the reinforcing bar or after the assembling operation of the reinforcing bar. In many cases, it is placed on a reinforcing bar or set near a reinforcing bar. Therefore, especially when the piping sleeve is a paper-like tubular pipe or the like that is removed after the concrete is hardened, it is not possible to secure an effective cover thickness between the inner surface of the formed through hole and the reinforcing bar. As a result, the rusting of the reinforcing steel is accelerated, and the deterioration of the proof stress of the reinforced concrete structure is accelerated.
【０００４】本発明は、このような従来の課題に着目し
てなされたもので、鉄筋コンクリート構造物に配管用ス
リーブを用いて形成された貫通孔と鉄筋との間の有効な
かぶり厚を確保して、鉄筋コンクリート構造物の劣化の
促進を回避することのできるスリーブ固定治具を提供す
ることを目的とする。The present invention has been made in view of such a conventional problem, and secures an effective cover thickness between a through hole formed in a reinforced concrete structure by using a piping sleeve and a reinforcing bar. Accordingly, it is an object of the present invention to provide a sleeve fixing jig which can avoid promoting deterioration of a reinforced concrete structure.
【０００５】[0005]
【課題を解決するための手段】本発明は、鉄筋に係合固
定される鉄筋係合部と、配管用スリーブを保持するスリ
ーブ保持部と、該鉄筋係合部及び該スリーブ保持部間に
介在し、該鉄筋と該配管用スリーブとの間に所定の間隔
を保持する間隔保持部とからなることを特徴とするスリ
ーブ固定治具を提供することにより、上記目的を達成し
たものである（請求項１記載の発明）。SUMMARY OF THE INVENTION The present invention relates to a reinforcing bar engaging portion fixed to a reinforcing bar, a sleeve holding portion for holding a piping sleeve, and an intervening portion between the reinforcing bar engaging portion and the sleeve holding portion. The above object has been attained by providing a sleeve fixing jig comprising a space holding portion for holding a predetermined space between the rebar and the piping sleeve. Item 1)).
【０００６】また、本発明のスリーブ固定治具は、上記
スリーブ保持部を配管用スリーブの外周面に係合する環
状の囲繞部によって構成し、該囲繞部内に配管用スリー
ブを保持するようにすることが好ましい（請求項２記載
の発明）。Further, in the sleeve fixing jig of the present invention, the sleeve holding portion is constituted by an annular surrounding portion which is engaged with the outer peripheral surface of the piping sleeve, and the piping sleeve is held in the surrounding portion. It is preferable (the invention according to claim 2).
【０００７】さらに、本発明のスリーブ固定治具は、上
記囲繞部に、その内径を増減する内径調整手段を設ける
ことが好ましい（請求項３記載の発明）。Further, the sleeve fixing jig of the present invention is preferably provided with an inner diameter adjusting means for increasing or decreasing the inner diameter of the surrounding portion (the invention according to claim 3).
【０００８】さらにまた、本発明のスリーブ固定治具
は、上記間隔保持部が、上記鉄筋と上記配管用スリーブ
との間の距離を増減調整し得る機能を備えるようにする
ことが好ましい（請求項４記載の発明）。Further, in the sleeve fixing jig of the present invention, it is preferable that the space holding portion has a function of increasing or decreasing the distance between the reinforcing bar and the piping sleeve. 4).
【０００９】なお、上記記載における配管用スリーブ
は、配管のみならず配線も行い得る貫通孔を、鉄筋コン
クリート構造物の内部に形成するためのスリーブを意味
する。ここで鉄筋コンクリート構造物とは、鉄筋等の補
強用の鋼棒を内部に配設したセメント系硬化材による構
造物を意味し、モルタル構造物等も含むものである。[0009] The piping sleeve in the above description means a sleeve for forming a through hole in a reinforced concrete structure capable of performing wiring as well as piping. Here, the reinforced concrete structure means a structure made of a cement-based hardening material in which a reinforcing steel bar such as a reinforcing bar is disposed, and includes a mortar structure and the like.
【００１０】[0010]
【発明の実施の形態】以下、本発明の好ましい実施形態
を添付図面を参照しつつ詳細に説明する。本実施形態に
係るスリーブ固定治具１０は、図１に示すように、鉄筋
コンクリート構造物である例えば家屋建物の布基礎に、
例えば給排水設備用の配管や配線を横断配設するための
貫通孔を設けるべく、配管用スリーブ１１をコンクリー
ト型枠１２，１２内に固定配置するために用いられる。Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIG. 1, the sleeve fixing jig 10 according to the present embodiment is a reinforced concrete structure, for example, a cloth foundation of a house building,
For example, it is used to fix and arrange the piping sleeve 11 in the concrete molds 12, 12 so as to provide a through hole for arranging piping and wiring for water supply and drainage facilities in a transverse manner.
【００１１】すなわち、例えば１５ｃｍ程度の間隔をお
いて対向配置された一対の型枠１２，１２の内側には、
その中央部分に複数の鉄筋１３が、型枠１２，１２と平
行な方向に例えば２０ｃｍ程度の間隔をおいて立設状態
で連設配置される。また、貫通孔を設けるべき位置に
は、一対の型枠１２，１２の間を横断して、防水性ダン
ボールからなる例えば外径が１０ｃｍ程度の円筒形状の
配管用スリーブ１１が、その両端開口部を一対の型枠１
２，１２の内面に各々当接させた状態で、本実施形態の
スリーブ固定治具１０を用いて固定配置されている。そ
して、鉄筋１３及び配管用スリーブ１１が配設された型
枠１２，１２の内側にはコンクリートが打設され、これ
が硬化する事によって、貫通孔を有する布基礎が形成さ
れる。That is, for example, inside a pair of molds 12 and 12 which are opposed to each other with an interval of about 15 cm,
A plurality of rebars 13 are arranged in the central portion in an upright state at intervals of, for example, about 20 cm in a direction parallel to the formwork 12. At the position where the through hole is to be provided, a cylindrical piping sleeve 11 made of, for example, a waterproof cardboard and having an outer diameter of about 10 cm is traversed between the pair of molds 12, 12. A pair of formwork 1
The sleeve fixing jig 10 of the present embodiment is fixedly arranged in a state of being in contact with the inner surfaces of the sleeves 2 and 12, respectively. And concrete is cast inside the formwork 12 in which the reinforcing bar 13 and the piping sleeve 11 are disposed, and the concrete is hardened to form a fabric base having a through hole.
【００１２】なお、一対の型枠１２，１２の内側には、
必要に応じて、補助用の鉄筋を、例えば複数の主鉄筋１
３を連結一体化するようにして型枠１２，１２と平行に
横方向に配設することができる。また、型枠１２，１２
の内面に当接する配管用スリーブ１１の両端開口部に
は、適宜固定釘等を打ち込み、スリーブ固定治具１０に
よる配管用スリーブ１１の固定状態を補強することもで
きる。It should be noted that inside the pair of molds 12, 12,
If necessary, an auxiliary reinforcing bar, for example, a plurality of main reinforcing bars 1
3 can be arranged in a horizontal direction in parallel with the formwork 12 so as to be integrated and integrated. Also, the formwork 12, 12
Fixing nails or the like may be appropriately driven into the opening portions at both ends of the piping sleeve 11 abutting on the inner surface of the piping sleeve to reinforce the fixing state of the piping sleeve 11 by the sleeve fixing jig 10.
【００１３】そして、本実施形態に係るスリーブ固定治
具１０は、鉄筋１３に係合固定される鉄筋係合部１４
と、配管用スリーブ１１を保持するスリーブ保持部１５
と、鉄筋係合部１４及びスリーブ保持部１５の間に介在
し、鉄筋１３と配管用スリーブ１１との間に、必要なか
ぶり厚に相当する例えば３ｃｍの間隔を保持する間隔保
持部１６とによって構成される。The sleeve fixing jig 10 according to the present embodiment includes a reinforcing bar engaging portion 14 which is engaged and fixed to the reinforcing bar 13.
And a sleeve holder 15 for holding the piping sleeve 11
And a spacing holding portion 16 interposed between the reinforcing bar engaging portion 14 and the sleeve holding portion 15 and holding a spacing of, for example, 3 cm corresponding to a required cover thickness between the reinforcing bar 13 and the piping sleeve 11. Be composed.
【００１４】鉄筋係合部１４は、例えば１〜３ｃｍ程度
の高さの、断面が略半円形状に湾曲した塑性変形が可能
な軟鋼による係合部材からなり、この略半円形状の内側
に鉄筋１３を配置して、その外側をペンチ等で挟み込ん
でカシメることにより、スリーブ固定治具１０を鉄筋１
３に容易に係合固定することができる。なお、略半円形
状の背面側中央部分には、間隔保持部１６の一端部が接
合一体化している。The reinforcing bar engaging portion 14 is formed of a plastically deformable soft steel member having a height of, for example, about 1 to 3 cm and having a substantially semi-circular cross section, and is provided inside the substantially semi-circular shape. The rebar 13 is arranged, the outside thereof is sandwiched between pliers or the like, and caulking is performed.
3 can be easily engaged and fixed. In addition, one end of the interval holding part 16 is joined and integrated with the substantially semicircular back central part.
【００１５】スリーブ保持部１５は、弾性変形が可能な
帯状の薄い鋼製プレートを、その両端を互いに重ね合わ
せた状態で円形に湾曲するようにくせ付けして形成され
る、環状の囲繞部からなるもので、この囲繞部内に配管
用スリーブ１１を保持する。また、このスリーブ保持部
１５は、帯状鋼製プレートの両端の重ね合わせ量を変化
させることにより、囲繞部の内径を増減調整する機能を
備える。The sleeve holding portion 15 is formed from an annular surrounding portion which is formed by attaching an elastically deformable strip-shaped thin steel plate so as to bend in a circular shape with its both ends overlapped with each other. The pipe sleeve 11 is held in the surrounding portion. Further, the sleeve holding portion 15 has a function of increasing or decreasing the inner diameter of the surrounding portion by changing the overlapping amount of both ends of the strip-shaped steel plate.
【００１６】さらに、図２にも示すように、下側に重ね
合される一方の端部の上面には、その中央部分に、帯状
鋼製プレートの延長方向に例えば５ｍｍ程度の間隔をお
いて一対の係止用突起１７が突出形成されると共に、上
側に重ね合される他方の端部には、上記一対の係止用突
起１７と係合する係止孔１８が、例えば５ｍｍ程度の間
隔をおいて、帯状鋼製プレートの延長方向に複数形成さ
れている。従って、複数の係止孔１８から隣接する一対
の係止孔１８を選択して、係止用突起１７を各々係合す
ることにより、保持すべき配管用スリーブ１１の径の大
きさに応じて環状の囲繞部の内径を増減調整し、配管用
スリーブ１１の外周面に密着させることにより、スリー
ブ保持部１５によって配管用スリーブ１１を固定した状
態で保持することが可能になる。Further, as shown in FIG. 2, on the upper surface of one end portion to be overlapped on the lower side, a central portion is provided with a gap of, for example, about 5 mm in the extending direction of the strip-shaped steel plate. A pair of locking projections 17 are formed so as to protrude, and a locking hole 18 that engages with the pair of locking projections 17 is provided at the other end overlapped on the upper side with an interval of, for example, about 5 mm. , A plurality of steel plates are formed in the extension direction of the steel plate. Therefore, by selecting a pair of adjacent locking holes 18 from the plurality of locking holes 18 and engaging the locking projections 17 with each other, according to the diameter of the piping sleeve 11 to be held. By adjusting the inner diameter of the annular surrounding portion to be increased or decreased and brought into close contact with the outer peripheral surface of the piping sleeve 11, it is possible to hold the piping sleeve 11 in a fixed state by the sleeve holding portion 15.
【００１７】間隔保持部１６は、塑性変形が可能な軟鋼
からなる１ｃｍ程度の幅の帯状のプレート部材からな
り、その一端部が鉄筋係合部１４の背面側中央部分に接
合一体化している。また、間隔保持部１６の他端部に
は、スリーブ保持部１５を構成する帯状鋼製プレートを
挿通可能なバックル部１９が設けられおり、このバック
ル部１９に折り帯状鋼製プレートを挿通した後にカシメ
止めすることにより、スリーブ保持部１５を間隔保持部
１６に接合固定する。さらに、間隔保持部１６は、バッ
クル部１９と鉄筋係合部１４への接合部との間の本体部
分が、塑性変形可能でフレキシブルな構造となっている
ので、この間隔保持部１６を曲折して鉄筋１３と配管用
スリーブ１１との間隔を調整することにより、必要な大
きさのかぶり厚を容易に確保することができる。The spacing member 16 is formed of a band-shaped plate member of plastic-deformable mild steel and having a width of about 1 cm, and one end thereof is integrally joined to a central portion on the rear side of the reinforcing bar engaging portion 14. At the other end of the interval holding portion 16, a buckle portion 19 through which a band-shaped steel plate constituting the sleeve holding portion 15 can be inserted is provided, and after the folded band-shaped steel plate is inserted through the buckle portion 19. By crimping, the sleeve holding portion 15 is joined and fixed to the space holding portion 16. Further, the main body portion between the buckle portion 19 and the joint portion to the reinforcing bar engaging portion 14 has a flexible structure that is plastically deformable and flexible, so that the space holding portion 16 is bent. By adjusting the distance between the reinforcing bar 13 and the sleeve 11 for piping, it is possible to easily secure the required size of the cover thickness.
【００１８】そして、本実施形態によれば、配管用スリ
ーブ１１は、スリーブ固定治具１０を介して、鉄筋１３
との間に、必要なかぶり厚に相当する間隔を保持して固
定され、この状態でコンクリートが打設されるので、コ
ンクリートの硬化後に配管用スリーブ１１を撤去して形
成された貫通孔の内面と、鉄筋１３との間には、例えば
３ｃｍの有効なかぶり厚が確実に確保されることにな
る。従って、鉄筋の発錆を早めることなく、布基礎の劣
化が促進するのを回避することが可能になる。According to the present embodiment, the pipe sleeve 11 is connected to the reinforcing bar 13 via the sleeve fixing jig 10.
Is fixed while maintaining an interval corresponding to the necessary cover thickness, and concrete is poured in this state. After the concrete is hardened, the piping sleeve 11 is removed and the inner surface of the through hole is formed. Thus, an effective cover thickness of, for example, 3 cm is reliably ensured between the reinforcing bar 13 and the reinforcing bar 13. Therefore, it is possible to avoid accelerating the deterioration of the fabric foundation without accelerating the rusting of the reinforcing bar.
【００１９】本発明は、上記実施形態に限定されること
なく種々の変更が可能である。例えば、スリーブ保持部
は、必ずしも囲繞部の内径を増減調整して配管用スリー
ブを固定状態で保持するものである必要はなく、配管用
スリーブの外径より大きな内径の囲繞部に配管用スリー
ブを挿通することにより保持するものであっても良い。
また、間隔保持部は、必ずしも鉄筋と配管用スリーブと
の間の距離を増減調整する機能を備えるものである必要
はなく、鋼製プレート等を介して鉄筋係合部とスリーブ
保持部との間を固定した状態で介在するものであっても
良い。The present invention can be variously modified without being limited to the above embodiment. For example, the sleeve holding portion does not necessarily need to adjust the inner diameter of the surrounding portion to increase or decrease to hold the piping sleeve in a fixed state, and the piping sleeve is provided on the surrounding portion having an inner diameter larger than the outer diameter of the piping sleeve. It may be held by inserting.
Further, the interval holding portion does not necessarily need to have a function of increasing or decreasing the distance between the reinforcing bar and the piping sleeve, and may be provided between the reinforcing bar engaging portion and the sleeve holding portion via a steel plate or the like. May be interposed in a fixed state.
【００２０】さらに、配管用スリーブは、必ずしも円筒
状のものである必要はなく、スリーブ保持部の形状を変
更して、種々の断面形状の配管用スリーブを保持するこ
とができる。さらにまた、鉄筋コンクリート構造物であ
れば、布基礎に限らず、コンクリート梁、コンクリート
柱の他、各種の土木構造物に対しても貫通孔を設けるべ
く本発明のスリーブ固定治具を採用することができる。Furthermore, the piping sleeve does not necessarily have to be cylindrical, and the shape of the sleeve holding portion can be changed to hold piping sleeves having various cross-sectional shapes. Furthermore, if it is a reinforced concrete structure, the sleeve fixing jig of the present invention may be employed to provide a through hole not only for a cloth foundation but also for various types of civil engineering structures in addition to concrete beams and concrete columns. it can.
【００２１】[0021]
【発明の効果】本発明のスリーブ固定治具によれば、鉄
筋コンクリート構造物に配管用スリーブを用いて形成さ
れた貫通孔と鉄筋との間の有効なかぶり厚を確保して、
鉄筋コンクリート構造物の劣化の促進を回避することが
できる。According to the sleeve fixing jig of the present invention, it is possible to secure an effective cover thickness between a through-hole formed using a piping sleeve in a reinforced concrete structure and a reinforcing bar,
Acceleration of deterioration of the reinforced concrete structure can be avoided.
【図１】本発明の一実施形態に係るスリーブ固定治具を
用いて配管用スリーブを保持した状況を示す斜視図であ
る。FIG. 1 is a perspective view showing a state where a piping sleeve is held using a sleeve fixing jig according to an embodiment of the present invention.
【図２】図１のＡ−Ａに沿った部分拡大断面図である。FIG. 2 is a partially enlarged cross-sectional view along AA of FIG.
１０ スリーブ固定治具 １１ 配管用スリーブ １２ コンクリート型枠 １３ 鉄筋 １４ 鉄筋係合部 １５ スリーブ保持部 １６ 間隔保持部 １７ 係止用突起 １８ 係止孔 １９ バックル部 DESCRIPTION OF SYMBOLS 10 Sleeve fixing jig 11 Piping sleeve 12 Concrete formwork 13 Reinforcement 14 Reinforcement engaging part 15 Sleeve holding part 16 Interval holding part 17 Locking projection 18 Locking hole 19 Buckle part
Claims (4)
管用スリーブを保持するスリーブ保持部と、該鉄筋係合
部及び該スリーブ保持部間に介在し、該鉄筋と該配管用
スリーブとの間に所定の間隔を保持する間隔保持部とか
らなることを特徴とするスリーブ固定治具。1. A rebar engaging portion fixedly engaged with a rebar, a sleeve holding portion for holding a piping sleeve, interposed between the rebar engaging portion and the sleeve holding portion, and the rebar and the pipe are provided. A sleeve fixing jig comprising: an interval holding portion that holds a predetermined interval between the sleeve fixing sleeve and the sleeve.
の外周面に係合する環状の囲繞部からなり、該囲繞部内
に配管用スリーブを保持するようになされている請求項
１記載のスリーブ固定治具。2. The sleeve fixing device according to claim 1, wherein said sleeve holding portion comprises an annular surrounding portion engaged with an outer peripheral surface of the piping sleeve, and holds the piping sleeve in the surrounding portion. jig.
調整手段を有している請求項２記載のスリーブ固定治
具。3. The sleeve fixing jig according to claim 2, wherein said surrounding portion has an inner diameter adjusting means for increasing or decreasing the inner diameter.
用スリーブとの間の距離を増減調整し得るようになされ
ている請求項１〜３の何れかに記載のスリーブ固定治
具。4. The sleeve fixing jig according to claim 1, wherein said space holding portion is capable of adjusting a distance between said reinforcing bar and said piping sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05111699A JP4167339B2 (en) | 1999-02-26 | 1999-02-26 | Sleeve fixing jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05111699A JP4167339B2 (en) | 1999-02-26 | 1999-02-26 | Sleeve fixing jig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000248739A true JP2000248739A (en) | 2000-09-12 |
| JP4167339B2 JP4167339B2 (en) | 2008-10-15 |
Family
ID=12877848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05111699A Expired - Fee Related JP4167339B2 (en) | 1999-02-26 | 1999-02-26 | Sleeve fixing jig |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4167339B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100753188B1 (en) | 2006-10-25 | 2007-08-30 | 전추길 | Device of coupling taps for the wall |
| JP2008144823A (en) * | 2006-12-08 | 2008-06-26 | Sekisui House Ltd | Sleeve holder |
| JP2009091869A (en) * | 2007-10-12 | 2009-04-30 | Sekisui House Ltd | Sleeve holder |
| JP2009185452A (en) * | 2008-02-04 | 2009-08-20 | Tokai Kensho:Kk | Sleeve fixing implement |
| CN104234420A (en) * | 2014-09-09 | 2014-12-24 | 中国能源建设集团山西省电力建设四公司 | Small reinforced concrete chimney formwork top opening adjustment and reinforcement device |
| JP2016084647A (en) * | 2014-10-28 | 2016-05-19 | 阿波合同会社 | Void support |
-
1999
- 1999-02-26 JP JP05111699A patent/JP4167339B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100753188B1 (en) | 2006-10-25 | 2007-08-30 | 전추길 | Device of coupling taps for the wall |
| JP2008144823A (en) * | 2006-12-08 | 2008-06-26 | Sekisui House Ltd | Sleeve holder |
| JP2009091869A (en) * | 2007-10-12 | 2009-04-30 | Sekisui House Ltd | Sleeve holder |
| JP2009185452A (en) * | 2008-02-04 | 2009-08-20 | Tokai Kensho:Kk | Sleeve fixing implement |
| CN104234420A (en) * | 2014-09-09 | 2014-12-24 | 中国能源建设集团山西省电力建设四公司 | Small reinforced concrete chimney formwork top opening adjustment and reinforcement device |
| JP2016084647A (en) * | 2014-10-28 | 2016-05-19 | 阿波合同会社 | Void support |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4167339B2 (en) | 2008-10-15 |
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