JPH026111Y2 - - Google Patents
Info
- Publication number
- JPH026111Y2 JPH026111Y2 JP19451684U JP19451684U JPH026111Y2 JP H026111 Y2 JPH026111 Y2 JP H026111Y2 JP 19451684 U JP19451684 U JP 19451684U JP 19451684 U JP19451684 U JP 19451684U JP H026111 Y2 JPH026111 Y2 JP H026111Y2
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- plate
- insertion hole
- wedge
- pulling
- 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.)
- Expired
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 41
- 239000010959 steel Substances 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 37
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Piles And Underground Anchors (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は主として除去式アースアンカーにおけ
る鋼材引抜き作業に用いられる治具に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention mainly relates to a jig used for pulling out steel materials in a removable earth anchor.
（従来の技術とその問題点）
地下鉄工事、ビルデイング類の基礎工事等にお
いて、作業空間を広く確保する目的などのため、
背面地山に穿孔を行い、これにPC鋼棒、PC鋼線
などの鋼材端部を挿入しコンクリートで固め、表
面から延出する鋼材により土留杭類を締付け固定
し、工事完了後鋼材を撤去する除去式アースアン
カー工法が知られている。(Conventional technology and its problems) For the purpose of securing a wide work space in subway construction, foundation work for buildings, etc.
Drill holes in the back ground, insert the ends of steel materials such as PC steel rods and wires, and solidify them with concrete. Retaining piles are tightened and fixed using the steel materials extending from the surface. After construction is completed, the steel materials are removed. A removable earth anchor construction method is known.
この除去式アースアンカー工法において、コン
クリート中に埋込まれている鋼材を引抜く場合、
従来では、アンカーから突出している鋼材にテー
パ穴を有する筒体とテーパ穴に内挿されるくさび
とからなる定着具を取付け、この定着具を直接引
張るか、あるいはアンカー表面に当板を載せこの
当板を周囲複数個所から牽引する方法がとられて
いた。 In this removable earth anchor method, when pulling out the steel embedded in concrete,
Conventionally, a fixing device consisting of a cylindrical body with a tapered hole and a wedge inserted into the tapered hole is attached to a steel member protruding from the anchor, and the fixing device is pulled directly or a plate is placed on the surface of the anchor. The method used was to tow the board from multiple locations around it.
しかしながら、この方法では引抜き抵抗を専ら
定着具に受け持たせる関係から、大きな引抜き荷
重により定着具が損傷したり、当板に異常変形が
起きるなどのトラブルが生じやすく、また、大き
な引抜き荷重によりくさびが深くかん合するの
で、引抜くべき鋼材が長かつたり、クレーンの揚
程が充分でなかつた場合等、定着具の連結位置の
切換え（盛りかえ）を何度も繰返す場合に、定着
具の着脱にきわめて手間と時間がかかり、作業能
率が低下するという問題があつた。 However, with this method, the pull-out resistance is solely handled by the fixing tool, which tends to cause problems such as damage to the fixing tool and abnormal deformation of the contact plate due to the large pull-out load. Because the anchors are deeply engaged, it is difficult to attach and detach the anchor when the anchor is to be repositioned many times, such as when the steel material to be pulled is long or the crane does not have sufficient lifting height. There was a problem that it took a lot of effort and time to do so, and the work efficiency decreased.
さらに、上記方法では、鋼材の引抜きが完了し
たときに相当なハネ返り衝撃が定着具に作用する
ため、定着具が外れて鋼材がハネ廻りを起した
り、定着具のハネ飛びが生じやすく、これにより
要員や周辺機材を損傷を与える危険があつた。 Furthermore, in the above method, when the pulling of the steel material is completed, a considerable splash impact is applied to the fixing tool, so the fixing tool is likely to come off and the steel material will spring around, or the fixing tool will easily fly off. This posed the risk of damaging personnel and surrounding equipment.
（問題点を解決するための手段）
本考案は前記のような問題点を解決するために
考案されたもので、その目的とするところは、き
わめて簡単な構造により定着具に不必要に大きな
荷重をかけることなく能率的かつ安全に鋼材を引
抜くことができるこの種治具を提供することにあ
る。(Means for solving the problem) The present invention was devised to solve the above-mentioned problems, and its purpose is to avoid unnecessary heavy loads on the fixing device by using an extremely simple structure. It is an object of the present invention to provide a jig of this kind that can efficiently and safely pull out steel materials without applying stress.
この目的を達成するため本考案は、定着具その
ものの固定力を即ち引抜き抵抗力としていた従来
の発想を転換したもので、側端部にシヤツクル類
を取付けこれと位置をずらせて鋼材の挿通孔を形
成した厚肉のプレートと、該プレート背面に配さ
れるくさび式定着具とを組合せ、シヤツクル類を
介してプレートを牽引することにより挿通孔角部
で鋼材を屈曲し、この鋼材屈曲部で引抜抵抗力を
大部分を受持たせながら引抜くように構成したこ
とを特徴とするものである。 In order to achieve this purpose, the present invention is a change from the conventional idea that the fixing force of the fixing device itself was used as a pull-out resistance force.The present invention is a change from the conventional idea that the fixing force of the fixing device itself was used as a pull-out resistance force. By combining a thick-walled plate with a wedge-shaped fixing device placed on the back of the plate, the steel material is bent at the corner of the insertion hole by pulling the plate through shafts, and the steel material is bent at the bent portion of the steel material. It is characterized by being constructed so that it can be pulled out while taking over most of the pulling resistance force.
（実施例）
以下本考案の実施例を添付図面により説明す
る。第１図ないし第３図は本考案に係る鋼材引抜
き治具の実施例を示すもので、１はくさび式定着
具であり、内部にテーパ穴１２を形成した筒体１
１と、このテーパ穴１２を形成した筒体１１と、
このテーパ穴１２にかん入されるくさび片１３と
からなつている。(Example) Examples of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show an embodiment of the steel material drawing jig according to the present invention, in which 1 is a wedge-type fixing tool, and a cylindrical body 1 with a tapered hole 12 formed inside.
1, a cylindrical body 11 in which the tapered hole 12 is formed,
It consists of a wedge piece 13 that is inserted into this tapered hole 12.
２はプレートであり、たとえば30mmのごとき比
較的厚肉の鉄板などからなつており、その側端部
には板厚を跨ぐようにシヤツクル状金具３が配さ
れ、プレートを貫通するピン５により枢着されて
いる。 Reference numeral 2 designates a plate, which is made of a relatively thick iron plate, for example, 30 mm, and a shackle-shaped metal fitting 3 is arranged at the side end of the plate so as to straddle the thickness of the plate. It is worn.
そして、前記ピン５から遠ざつた位置好ましく
はプレート中央よりピンと反対側に近い位置に、
鋼材６を挿通する挿通孔４が穿設され、この挿通
孔４の背面部位に前記くさび式定着具１が装着さ
れるようになつている。 Then, at a position away from the pin 5, preferably at a position closer to the opposite side of the plate than the center of the plate,
An insertion hole 4 is formed through which the steel material 6 is inserted, and the wedge-type fixing tool 1 is attached to the back side of the insertion hole 4.
その他図面において、７は鋼材６を埋込んだア
ースアンカー、８はクレーン、９はクレーンロー
プである。 In other drawings, 7 is an earth anchor embedded with steel material 6, 8 is a crane, and 9 is a crane rope.
（作用）
本考案は上記のような構成からなるので、アー
スアンカー７から鋼材６を引抜くに当つては、ア
ースアンカー７の表面から突出する鋼材端部６１
をプレート２の挿入孔４を通した後、くさび式定
着具１のくさび片に挿通してくさび片１３を筒体
１１のテーパ穴１２にかん入させる。(Function) Since the present invention has the above-described configuration, when pulling out the steel material 6 from the earth anchor 7, the steel material end 61 protruding from the surface of the earth anchor 7
is passed through the insertion hole 4 of the plate 2, and then inserted into the wedge piece of the wedge-type fixing device 1, and the wedge piece 13 is inserted into the tapered hole 12 of the cylindrical body 11.
次いでくさび式定着具１をプレート２の背面に
当接させ、この状態でプレート２の側端部に取付
けているシヤツクル状金具３にクレーンロープ９
を連結し、クレーン８を作動してクレーンロープ
９を巻上げる。 Next, the wedge-type fixing device 1 is brought into contact with the back surface of the plate 2, and in this state, the crane rope 9 is attached to the shackle-shaped metal fitting 3 attached to the side end of the plate 2.
, and operate the crane 8 to hoist the crane rope 9.
こうすれば、シヤツクル状金具３が側端部に偏
した位置にあることから、第２図のように、プレ
ート２は垂直状ないしはこれに近い角度で起立
し、上方へ牽引される。これにより、鋼材６は第
３図のごとくプレート２の挿通孔４の角部４１で
強く屈曲されるので、該屈曲部分６２に大きな引
抜き抵抗力が生じ、くさび式定着具１に大きな荷
重がかからない状態でしかも確実に鋼材６が引抜
かれる。 In this way, since the shackle-shaped metal fitting 3 is located at a position biased toward the side end, the plate 2 stands up vertically or at an angle close to this, and is pulled upward, as shown in FIG. As a result, the steel material 6 is strongly bent at the corner 41 of the insertion hole 4 of the plate 2 as shown in FIG. The steel material 6 can be pulled out in a reliable manner.
このように、引抜き力の大部分を鋼材屈曲部６
２で受持たせ、くさび式定着具１は単に鋼材が移
動しないように固定するだけで済み、これに過度
の荷重をかけないことから、引抜くべき鋼材が長
い場合等に対処するためのくさび片１３の着脱を
簡易、迅速に行え、作業能率が向上する。 In this way, most of the pulling force is transferred to the bent portion 6 of the steel material.
The wedge-type anchor 1 only needs to be fixed so that the steel material does not move, and does not apply excessive load to it, so it is useful when the steel material to be pulled out is long. The piece 13 can be attached and detached easily and quickly, improving work efficiency.
また、鋼材６がアースアンカー７から引抜かれ
たときにも、鋼材がプレート２で屈曲されている
関係から、鋼材６のハネ返り衝撃が定着具１に直
接伝わらないので、くさび式定着具１の外れや、
鋼材のハネ廻りが起らず、安全に作業を行える。 Furthermore, even when the steel material 6 is pulled out from the earth anchor 7, since the steel material is bent by the plate 2, the rebound impact of the steel material 6 is not directly transmitted to the anchor 1. If it's off,
Work can be carried out safely without the steel material splashing around.
（効果）
以上説明した本考案によれば、側端部のシヤツ
クル状金具３を取付けこれと位置をずらせて鋼材
の挿通孔４を形成した厚肉のプレート２と、該プ
レート２の背面に配され挿通孔４から引き出され
た鋼材を固持するためのくさび式定着具１とから
なり、シヤツクル状金具３を介してプレート２を
牽引することにより挿通孔角部４１で鋼材を屈曲
しながら鋼材を引抜くように構成したので、引抜
き力の大部分を鋼材屈曲部で受け持たせ、くさび
式定着具に過度の荷重を掛けないようにすること
ができ、これにより除去アースアンカー等におけ
る鋼材引抜き作業を安全かつ能率よく行うことが
でき、しかも構造が簡単で安価に実施できるなど
のすぐれた効果が得られる。(Effects) According to the present invention described above, a thick plate 2 is provided with a shaft-like metal fitting 3 attached to the side end and a steel insertion hole 4 is formed at a position shifted from this, and It consists of a wedge-type fixing tool 1 for holding the steel material pulled out from the insertion hole 4, and a wedge-type fixing tool 1 for holding the steel material pulled out from the insertion hole 4. By pulling the plate 2 through the shackle-shaped metal fitting 3, the steel material is bent while being bent at the corner part 41 of the insertion hole. Since it is configured to be pulled out, most of the pulling force is borne by the bent part of the steel material, and an excessive load is not applied to the wedge-type fixing device. can be carried out safely and efficiently, and has excellent effects such as a simple structure and low cost.
第１図は本考案に係る鋼材引抜き治具の一実施
例を示す斜視図、第２図は本考案の使用状態を示
す側面図、第３図は第２図の一部拡大図である。
１……くさび式定着具、２……プレート、３…
…シヤツクル状金具、４……挿通孔、４１……挿
通孔の角部、６……鋼材、６２……鋼材屈曲部。
FIG. 1 is a perspective view showing an embodiment of the steel material drawing jig according to the present invention, FIG. 2 is a side view showing the use of the present invention, and FIG. 3 is a partially enlarged view of FIG. 2. 1... Wedge type fixing tool, 2... Plate, 3...
... Shackle-shaped metal fitting, 4 ... Insertion hole, 41 ... Corner of insertion hole, 6 ... Steel material, 62 ... Steel material bent part.
Claims (1)
置をずらせて鋼材の挿通孔４を形成した厚肉のプ
レート２と、該プレート２の背面に配され挿通孔
４から引き出された鋼材を固持するためのくさび
式定着具１とからなり、シヤツクル状金具３を介
してプレート２を牽引することにより挿通孔角部
４１で鋼材を屈曲しながら鋼材を引抜くように構
成したことを特徴とする鋼材引抜き具。 A thick-walled plate 2 with a shackle-shaped metal fitting 3 attached to the side end and shifted from this to form an insertion hole 4 for the steel material, and a thick plate 2 arranged on the back side of the plate 2 to securely hold the steel material pulled out from the insertion hole 4. The steel material is constructed such that the steel material is pulled out while bending the steel material at the corner portion 41 of the insertion hole by pulling the plate 2 through the shackle-shaped metal fitting 3. Pulling tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19451684U JPH026111Y2 (en) | 1984-12-24 | 1984-12-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19451684U JPH026111Y2 (en) | 1984-12-24 | 1984-12-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61112048U JPS61112048U (en) | 1986-07-15 |
| JPH026111Y2 true JPH026111Y2 (en) | 1990-02-14 |
Family
ID=30751970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19451684U Expired JPH026111Y2 (en) | 1984-12-24 | 1984-12-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH026111Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180065682A (en) * | 2016-12-08 | 2018-06-18 | 주식회사 삼우기초기술 | Concrete structure lifting assembly |
-
1984
- 1984-12-24 JP JP19451684U patent/JPH026111Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180065682A (en) * | 2016-12-08 | 2018-06-18 | 주식회사 삼우기초기술 | Concrete structure lifting assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61112048U (en) | 1986-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2772560A (en) | Pick-up device for pre-cast concrete slabs | |
| JP2019509232A (en) | Lifting fastener | |
| JPH026111Y2 (en) | ||
| JP2001165245A (en) | Wedge rope fastening device | |
| JPH09302674A (en) | Anchor bolt positioning tool and method | |
| JP7373812B2 (en) | sling | |
| JP2596392Y2 (en) | PC board erection jig | |
| JPH1171817A (en) | High-strength insert for deck plate, screw with drill, and insert construction method using these | |
| JP4274991B2 (en) | Hanging jig | |
| US8359714B2 (en) | Hoist line protector | |
| CN211421880U (en) | Construction tool for tensioning prestressed steel strand | |
| JP5609066B2 (en) | Hanging jig | |
| JPS6136585Y2 (en) | ||
| JPH048148Y2 (en) | ||
| JPH11180673A (en) | Suspension wire non-slip jig | |
| CN216662190U (en) | Steel wire rope tensioning device for port hanger steel wire rope joint | |
| CN221396851U (en) | Concrete member pre-buried hoisting point external member | |
| CN214611061U (en) | Anti-deformation device for hoisting and overturning large-scale thin plate | |
| JP2587394Y2 (en) | Wire rope tension aid | |
| JPH0120378Y2 (en) | ||
| JPH05172190A (en) | Rope connecting tool | |
| JP3862503B2 (en) | Main girder upper flange mounting scaffold pipe device | |
| JP3011904U (en) | Frame fixing structure to the steel pipe pile head | |
| JP2542015Y2 (en) | Removable anchor load-bearing structure | |
| JP3069423U (en) | Large underwear with wedge function |