JP3320637B2 - How to install branch anchor - Google Patents
How to install branch anchorInfo
- Publication number
- JP3320637B2 JP3320637B2 JP15696397A JP15696397A JP3320637B2 JP 3320637 B2 JP3320637 B2 JP 3320637B2 JP 15696397 A JP15696397 A JP 15696397A JP 15696397 A JP15696397 A JP 15696397A JP 3320637 B2 JP3320637 B2 JP 3320637B2
- Authority
- JP
- Japan
- Prior art keywords
- branch
- rod
- branch rod
- anchor
- claw member
- 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 - Fee Related
Links
Landscapes
- Piles And Underground Anchors (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】 この発明は、配電設備にお
ける電柱等の架空線路構造物用の支線アンカーの設置方
法に関するもので、より詳しくは、従来のこの種支線ア
ンカー用コンクリート根枷（支線ブロック）に代わるア
ンカーヘッドを備えた支線アンカーを用いるものであ
る。BACKGROUND OF THE INVENTION The present invention, power distribution equipment intended for the installation method of branch anchor over for overhead line structures such as utility poles in more detail, conventional concrete underbracing for this type branch anchor (branch block it is to use a branch anchor having an anchor head in place of).
【０００２】[0002]
【従来の技術】支線は電柱に加わる不平衡荷重のバラン
スをとり、電柱の倒壊、傾斜を防ぐために設けられる。
支線は上部支線と下部支線に分けられ、下部支線とし
て、一般的にはすき形アンカーが用いられるが、地下埋
設物などですき形アンカーの使用ができない箇所ではコ
ンクリート根枷が用いられる。すなわち、図６に示すよ
うに、下端にコンクリート根枷（３）を固定した支線棒
（２）を、地盤に掘削した穴（４）に所定の角度で埋設
するのである。コンクリート根枷（３）は標準的な仕様
で６５０ｍｍ×４００ｍｍ、重量６７ｋｇもあるため、
これを埋設するための穴（４）は削岩機等での手掘りに
より施工している。2. Description of the Related Art Branch lines are provided to balance unbalanced loads applied to utility poles and prevent the poles from collapsing or tilting.
The branch line is divided into an upper branch line and a lower branch line. As the lower branch line, a plow anchor is generally used. However, a concrete anchor is used in a place where the underground anchor cannot be used, such as an underground buried object. In other words, as shown in FIG. 6, a branch rod (2) having a concrete shackle (3) fixed at the lower end is buried at a predetermined angle in a hole (4) excavated in the ground. Since concrete shackles (3) are 650 mm x 400 mm and weigh 67 kg in standard specifications,
The hole (4) for burying it is constructed by hand excavation with a rock drill.
【０００３】[0003]
【発明が解決しようとする課題】 地支線の施設箇所は
傾斜地等で地形環境が悪くユンボ（登録商標）等の掘削
機械を使用することができない場合も多い。そのような
場合にはコンクリート根枷の埋設穴は手掘りによらなけ
ればならない。岩質によって異なるが、掘削に８時間、
根枷埋設・埋戻しに約１時間と非常に時間がかかってい
る。[0007] In many cases, the facilities on the ground support line are on slopes and the like, and the geographical environment is poor, so that excavation machines such as Yumbo (registered trademark) cannot be used in many cases. In such cases, the burial holes in the concrete shackles must be dug by hand. 8 hours for drilling, depending on rock quality
It takes about 1 hour to bury and backfill the shackles.
【０００４】 そこで、この発明の目的は、施工が簡単
で、短時間で設置することのできる支線アンカーの設置
方法を提供することにある。[0004] It is an object of the present invention, the construction is simple, the installation of branch anchors that can be installed in a short time
It is to provide a method .
【０００５】[0005]
【課題を解決するための手段】 上記目的を達成するた
め、この発明で用いる支線アンカーは、次の支線棒とア
ンカーヘッドとで構成される。支線棒は一端にフック部
を備え、他端にねじ部を備える。アンカーヘッドは、支
線棒のねじ部を貫通させるための通り穴を備えた上部材
と、支線棒のねじ部とねじ結合するねじ穴を備えた下部
材と、下部材に支持軸を介して回転自在に取り付けられ
た爪部材と、一端にて上部材に連結され、他端にて爪部
材に連結されたリンクとを備える。支線棒の回転力を下
部材の上進運動に換え、更に下部材の上進運動により一
対の爪部材がそれぞれの支持軸を中心として回転するこ
とにより拡開可能であって、拡開後は下部材から横方向
に突出する。そして、この発明の支線アンカーの設置方
法は次の工程（ハ）（ニ）（ホ）（ヘ）（ト）からな
る。 （ハ）丸穴を掘削する。 （ニ）アンカーヘッドを装着した支線棒をその丸穴に挿
入する。 （ホ）規定の深さで支線棒のフック部を回し、下部材の
上進運動により爪部材を拡開させて岩盤壁に密着させ
る。 （ヘ）埋め戻しをする。 （ト）支線棒に上向き力を加えて爪部材を十分に拡開さ
せる。Means for Solving the Problems To achieve the above object, a branch anchor used in the present invention comprises the following branch rod and an anchor head. The support rod has a hook at one end and a screw at the other end. The anchor head has an upper member having a through hole for penetrating the thread portion of the branch rod, a lower member having a screw hole to be screw-coupled to the thread portion of the branch rod, and a lower member rotating via a support shaft. It has a claw member freely attached, and a link connected to the upper member at one end and connected to the claw member at the other end. The rotational force of the support rod is changed to the upward movement of the lower member, and further the upward movement of the lower member allows the pair of claw members to rotate about the respective support shafts so that the expansion can be performed. It protrudes laterally from the lower member. The method of installing a branch line anchor according to the present invention includes the following steps (c), (d), (e), (f), and (g). (C) Drill a round hole. (D) Insert the branch rod with the anchor head into the round hole. (E) Turn the hook part of the branch rod at the specified depth , and
The claw member is expanded by the upward movement to make close contact with the rock wall. (F) Backfill. (G) Applying upward force to the branch rod to spread the claw member sufficiently
To Ru.
【０００６】 請求項２の発明は、請求項１の支線アン
カーの設置方法において、支線棒に上向き力を加えて爪
部材を十分に拡開させた後、再度、支線棒のフック部を
回して爪部材が拡開した状態で固定することを特徴とす
る。According to a second aspect of the present invention, there is provided the branch line anchor according to the first aspect.
When installing a car , apply an upward force to the
After the member is sufficiently expanded , the hook portion of the branch wire rod is turned again to fix the claw member in an expanded state.
【０００７】[0007]
【０００８】[0008]
【０００９】丸穴の向きは垂直に限らず、支線アンカー
を設置すべき現場の状況に応じて所定の角度が設定され
る。[0009] The direction of the round hole is not limited to vertical, and a predetermined angle is set according to the situation of the site where the branch anchor is to be installed.
【００１０】[0010]
【００１１】 請求項１の発明のように、上記埋戻しの
後、支線棒に上向き力を加えることによって爪部材を十
分に拡開させることができる。そのために、たとえば、
専用の器具を用いてもよく、あるいは、地表から突出し
た支線棒のフック部に上部支線を連結した上で支線全体
に所定の張力を与えてもよい。さらに、支線棒に上向き
力を加えた後、再度、支線棒のフック部を回して爪部材
が拡開した状態で固定することもできる（請求項２）。
ここで、上向き力というのは、支線棒のねじ部側からフ
ック部側への向きを意味し、上向き力を加えるというと
きは、当該向きの分力または合力が作用する場合を含む
ものとする。As in the first aspect of the invention, after the back-filling, the claw member can be sufficiently expanded by applying an upward force to the branch rod. So, for example,
A dedicated instrument may be used, or a predetermined tension may be applied to the entire branch line after connecting the upper branch line to the hook portion of the branch line rod protruding from the ground surface. Further, after an upward force is applied to the branch rod, the hook portion of the branch rod may be turned again to fix the branch member in a state where the claw member is expanded (claim 2 ).
Here, the upward force means a direction from the thread portion side of the branch rod to the hook portion side, and the application of the upward force includes a case where a component force or a resultant force acts in the direction.
【００１２】 この発明の支線アンカーの設置方法は、
掘削土の埋戻しだけで支線アンカーの設置が終了し、従
来のような根枷や注入材を使用せず、引っ張り耐荷重は
岩盤自体の強度で持たせる構造である。A method for installing a branch line anchor according to the present invention is as follows.
The installation of the branch anchor is completed only by backfilling the excavated soil, the structure does not use the conventional shackles or injection material, and the tensile load capacity is given by the strength of the rock itself.
【００１３】 支線アンカーを挿入するための穴は直径
１２０mm程度の小口径のものでよいため、パーカッショ
ン等を装備した穴掘建柱車による機械掘りが可能であ
る。パーカッション掘削の場合、所要時間は軟岩で１５
分、硬岩で３０分程度であり、岩の層は地中部ではさま
ざまであるが、軟岩から硬岩にいたるすべてに適用でき
る。したがって、ユンボ（登録商標）等の掘削機械は使
用できない箇所でも穴掘建柱車による機械掘りは可能で
あるため、地支線下部埋設時間を現状の９時間から約１
時間程度の短縮できる。[0013] hole for inserting the branch anchor for may be of small diameter having a diameter of about 120 mm, it is possible to machine digging by Anaho Kenbashira vehicles equipped with percussion like. In the case of percussion excavation, the time required for soft rock is 15
It takes about 30 minutes for hard rock and the rock layer varies in the underground, but it can be applied to everything from soft rock to hard rock. Therefore, since it is possible to dig a machine using a digging column truck even in a place where a digging machine such as Yumbo (registered trademark) cannot be used, the burial time under the ground support line can be reduced by about 1 hour from the current 9 hours.
Time can be shortened.
【００１４】穴が小口径であることから掘削面積が小さ
く、埋戻しも簡単迅速に行える。また、施工作業に伴う
踏み荒しも従来のコンクリート根枷を埋設する場合に比
べて非常に少なくてすみ、それゆえ、舗装修復も容易で
ある。Since the hole has a small diameter, the excavation area is small, and backfilling can be performed easily and quickly. In addition, the stepping roughening caused by the construction work is very small as compared with the case where the conventional concrete shackles are buried, so that the pavement can be easily repaired.
【００１５】[0015]
【発明の実施の形態】図１に示すように、支線アンカー
（１０）は支線棒（２０）とアンカーヘッド（３０）と
を主要な構成要素としている。これらの構成要素は通常
は鋼製であるが、設置すべき現場の土質等に応じて他の
材料を採用したり、防錆その他のための種々加工を施す
ことができる。DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a branch anchor (10) has a branch rod (20) and an anchor head (30) as main components. These components are usually made of steel, but other materials can be adopted or various processes for rust prevention and the like can be performed according to the soil properties of the site where the components are to be installed.
【００１６】支線棒（２０）は、図２に示すように、一
端にシンブルを介して上部支線と連結するためのフック
部（２１）を備え、他端にアンカーヘッド（３０）を取
り付けるためのおねじ部（２２）を備えている。なお、
この支線棒（２０）は、既存の支線棒にねじ切りをする
だけでそのまま利用することができる。ねじ部（２２）
の上端にはストッパー（２３）を固定してある。ストッ
パー（２３）は、後述するようにアンカーヘッド（３
０）の上部材（３１）がフック部（２１）側に移動する
のを阻止するための位置規制ないし位置決め手段として
の役割を果たすものであり、図面にはナットの場合を例
示してあるが、ナットに限らず、たとえば金属片を溶接
することによって代替してもよい。As shown in FIG. 2, the branch rod (20) has a hook portion (21) at one end for connecting to an upper branch line via a thimble, and a second end for attaching an anchor head (30). An external thread (22) is provided. In addition,
The branch rod (20) can be used as it is simply by threading the existing branch rod. Screw part (22)
A stopper (23) is fixed to the upper end of the. The stopper (23) is connected to the anchor head (3) as described later.
0) serves as a position restricting means or a positioning means for preventing the upper member (31) from moving toward the hook portion (21), and the case of a nut is illustrated in the drawings. However, the present invention is not limited to the nut, and may be replaced by welding a metal piece, for example.
【００１７】アンカーヘッド（３０）は、図３に示すよ
うに、上部材（３１）と、下部材（３２）と、爪部材
（３３）と、リンク（３４）を備えている。爪部材（３
３）は一端にて支持軸（３５）により回転自在に下部材
（３２）に取り付けてある。図面に例示した構成では、
一対の爪部材（３３）がそれぞれの支持軸（３５）を中
心として回転することによって拡開することができるよ
うになっている。爪部材（３３）の他端は、リンク（３
４）を介して上部材（３１）に連結されている。すなわ
ち、各リンク（３４）はその一端をピン（３６）で回転
自在に上部材（３１）に取り付けてあり、他端をピン
（３７）で回転自在に爪部材（３３）に取り付けてあ
る。As shown in FIG. 3, the anchor head (30) includes an upper member (31), a lower member (32), a claw member (33), and a link (34). Claw member (3
3) is rotatably attached to the lower member (32) at one end by a support shaft (35). In the configuration illustrated in the drawing,
The pair of claw members (33) can be expanded by rotating about the respective support shafts (35). The other end of the claw member (33) is connected to the link (3
It is connected to the upper member (31) via 4). That is, each link (34) has one end rotatably attached to the upper member (31) with a pin (36), and the other end attached to the pawl member (33) so as to be rotatable with a pin (37).
【００１８】上部材（３１）は支線棒（２０）を貫通さ
せるための通り穴（３１ａ）を備えている。下部材（３
２）は支線棒（２０）のねじ部（２２）とねじ結合する
ためのねじ穴（３２ａ）を備えている。図３（Ａ）では
下部材（３２）に溶接したナット（３８）が当該ねじ穴
（３２ａ）を提供する場合を例示したが、図３（Ｂ）に
示すように下部材（３２）に直接、ねじ穴（３２ａ）を
加工することも可能である。The upper member (31) has a through hole (31a) for penetrating the branch rod (20). Lower member (3
2) is provided with a screw hole (32a) for screw connection with the screw portion (22) of the branch rod (20). FIG. 3 (A) illustrates a case where the nut (38) welded to the lower member (32) provides the screw hole (32a), but as shown in FIG. 3 (B), the nut (38) is directly connected to the lower member (32). It is also possible to machine the screw holes (32a).
【００１９】再び図１を参照すると、支持棒（２０）は
上部材（３１）の通り穴（３１ａ）を貫通して延在し、
かつ、上部材（３１）はストッパー（２３）によってフ
ック部（２１）側への軸方向移動を規制される。一方、
下部材（３２）のめねじ部（３２ａ）は支線棒（２０）
のねじ部（２２）とねじ結合している。したがって、支
線棒（２０）をねじが締まる方向、たとえば右ねじなら
ば右回りに回転させると、下部材（３２）が上部材（３
１）側に向かって軸方向に移動する。そして、下部材
（３２）の当該軸方向移動に伴って、爪部材（３３）が
支持軸（３５）を中心として回転し先端を半径方向外方
に張り出させる。図１は爪部材（３３）が最大限張り出
した状態を示している。Referring again to FIG. 1, the support rod (20) extends through the through hole (31a) of the upper member (31),
Further, the axial movement of the upper member (31) toward the hook (21) is restricted by the stopper (23). on the other hand,
The female thread (32a) of the lower member (32) is a branch rod (20).
(22). Therefore, when the branch rod (20) is rotated in the direction in which the screw is tightened, for example, clockwise in the case of a right-handed screw, the lower member (32) is turned into the upper member (3).
1) Move axially toward the side. Then, with the movement of the lower member (32) in the axial direction, the claw member (33) rotates about the support shaft (35) to protrude the tip outward in the radial direction. FIG. 1 shows a state in which the claw member (33) is protruded to the maximum.
【００２０】次に、上述の構成の支線アンカー（１０）
を設置する方法について図４を参照しながら説明する。Next, the branch line anchor (10) having the above configuration.
A method of installing the hologram will be described with reference to FIG.
【００２１】まず、パーカッション掘削等により、所定
の口径および深さの丸穴（４０）を、所定の角度で、地
盤に削成する。図４（Ａ）は垂直穴の場合を例示したも
のである。次に、アンカーヘッド（３０）を装着した支
線棒（２０）すなわち支線アンカー（１０）を丸穴（４
０）に挿入する（図４（Ｂ））。支線アンカー（１０）
を規定の深さまで挿入した状態で支線棒（２０）のフッ
ク部（２１）を回し、これによりアンカーヘッド（３
０）の爪部材（３３）を拡開させ、丸穴（４０）の周壁
を構成している岩盤（５０）に爪部材（３３）の先端部
を密着させる。その後、図４（Ｃ）に示すように土（６
０）を埋め戻す。埋戻しは途中で十分突き固めながら行
なうのが望ましい。これをもって支線アンカー（１０）
の埋設作業が終了する。First, a round hole (40) having a predetermined diameter and depth is formed in the ground at a predetermined angle by percussion excavation or the like. FIG. 4A illustrates the case of a vertical hole. Next, the branch rod (20) equipped with the anchor head (30), that is, the branch anchor (10) is inserted into the round hole (4).
0) (FIG. 4B). Branch line anchor (10)
Is turned to the specified depth, and the hook portion (21) of the branch rod (20) is turned.
The claw member (33) of (0) is expanded, and the tip of the claw member (33) is brought into close contact with the rock (50) constituting the peripheral wall of the round hole (40). Then, as shown in FIG.
Backfill 0). It is desirable to perform backfilling while sufficiently squeezing in the middle. With this, branch line anchor (10)
Burial work is completed.
【００２２】実際の施工では、支線アンカー（１０）を
設置した後、地表に突出した支線棒（２０）のフック部
（２１）に、電柱等の支持対象物に上端を連結した上部
支線の下端を連結し、所定の張力をもって支線を張設す
る。このとき、当該張力の作用により、支線棒（２０）
に上向きの力が加わる。したがって、下部材（３２）に
も上向き力が作用するが、上部材（３１）の上方には埋
め戻しされた土（６０）が堆積していることから上部材
（３１）は静止している。その結果、静止した上部材
（３１）側に下部材（３２）が移動し、支持軸（３５）
を中心として爪部材（３３）を旋回させてその先端を半
径方向外方に張り出させる。これにより、爪部材（３
３）が十分に拡開して地盤（５０）に食い込み、アンカ
ーが形成される。In the actual construction, after the branch anchor (10) is installed, the hook (21) of the branch rod (20) protruding to the surface of the ground is connected to the lower end of the upper branch connected to the object to be supported such as a telephone pole. Are connected, and a branch line is stretched with a predetermined tension. At this time, the branch rod (20)
The upward force is applied to. Therefore, an upward force also acts on the lower member (32), but the back member (31) is stationary because the backfilled soil (60) is deposited above the upper member (31). . As a result, the lower member (32) moves to the stationary upper member (31) side, and the support shaft (35)
The claw member (33) is swiveled around the center to make its tip protrude radially outward. Thereby, the claw member (3
3) spreads sufficiently and cuts into the ground (50) to form an anchor.
【００２３】なお、上述のようにフック部（２１）に上
部支線を連結した上で支線全体に張力を与えることで支
線棒（２０）に上向き力を加えるほか、専用の器具を用
いて支線棒に上向き荷重を負荷するようにしてもよい。As described above, the upper branch line is connected to the hook portion (21) and then tension is applied to the entire branch line to apply an upward force to the branch line bar (20). May be applied with an upward load.
【００２４】また、図５に示すように、支線棒（２０）
に上向き力を加えて爪部材（３３）を拡開させるとスト
ッパー（２３）と上部材（３１）とが軸方向に離間する
ので（図５（Ｂ））、上向き力を加えた後、再度フック
部（２１）を回して爪部材（３３）が拡開した状態で固
定することもできる（図５（Ｃ））。Also, as shown in FIG.
When the claw member (33) is expanded by applying an upward force to the stopper (23), the stopper (23) and the upper member (31) are separated from each other in the axial direction (FIG. 5 (B)). The hook part (21) can be rotated to fix the claw member (33) in an expanded state (FIG. 5C).
【００２５】[0025]
【実施例】 パーカッション掘削により口径１２０mm、
深さ２mの丸穴40を削成した。そして、この丸穴40に支
線アンカー10を挿入し、支線棒20のフック部21を回して
アンカーヘッド30の爪部材33を張り出させ、その先端を
丸穴40の周壁を形成している岩盤50に密着させた後、土
60を埋め戻した。次に、地面から突出した視線棒20のフ
ック部21に上部支線を結合し、所定の張力を作用させる
ことにより、上部材31が受ける土圧と引き抜き力で爪部
材33を拡開させ、岩盤50に食い込ませた。以上の所要時
間は約１時間であった。[Example] Perforation drilling 120mm,
A round hole 40 with a depth of 2 m was cut. Then, the branch anchor 10 is inserted into the round hole 40, the hook portion 21 of the branch rod 20 is turned to protrude the claw member 33 of the anchor head 30, and its tip forms the peripheral wall of the round hole 40. After adhering to 50, soil
60 backfilled. Next, the upper branch line is connected to the hook portion 21 of the line-of-sight bar 20 protruding from the ground, and by applying a predetermined tension, the claw member 33 is expanded by the earth pressure and the pulling force received by the upper member 31 , and the rock I dig into 50. The above required time was about one hour.
【００２６】掘削面積が約０．０４ｍ2 と非常に小さい
ため、掘削時間が短いだけでなく踏み荒しも少なく、舗
装復旧費の低減が図れる。ちなみに、図６に示した従来
の技術の場合、掘削面積は約０．９ｍ2 となる。Since the excavation area is as small as about 0.04 m 2 , not only is the excavation time short, but also there is little stepping, and pavement restoration costs can be reduced. Incidentally, in the case of the conventional technique shown in FIG. 6, the excavated area is about 0.9 m 2 .
【００２７】従来の支線棒の埋設深さは２ｍであり、同
等の深さとすることにより、既存の支線棒をそのまま活
用でき、コスト面で有利である。The burial depth of the conventional branch rod is 2 m, and by setting the same depth, the existing branch rod can be used as it is, which is advantageous in cost.
【００２８】[0028]
【発明の効果】以上説明したように、この発明によれ
ば、短時間で下部支線を施設できるため、施工能率が向
上し、大幅なコスト低減が図れる。また、掘削面積が小
さいため、踏み荒しが少なく、舗装復旧費の低減が図れ
る。As described above, according to the present invention, since the lower branch line can be installed in a short time, the construction efficiency can be improved and the cost can be greatly reduced. In addition, since the excavated area is small, there is little stepping, and pavement restoration costs can be reduced.
【図１】支線アンカーの使用状態を例示する正面図であ
る。FIG. 1 is a front view illustrating a use state of a branch line anchor.
【図２】支線棒の正面図である。FIG. 2 is a front view of a branch rod.
【図３】（Ａ）はアンカーヘッドの半断面図、（Ｂ）は
下部材の変形例を示す要部断面図、（Ｃ）は図３の支持
軸を通る横断面図である。3A is a half sectional view of an anchor head, FIG. 3B is a sectional view of a main part showing a modification of a lower member, and FIG. 3C is a transverse sectional view passing through a support shaft of FIG.
【図４】支線アンカーの設置方法を示す工程図である。FIG. 4 is a process chart showing a method of installing a branch anchor.
【図５】設置方法の変形例を示す工程図である。FIG. 5 is a process chart showing a modification of the installation method.
【図６】従来の技術を示す断面図である。FIG. 6 is a cross-sectional view showing a conventional technique.
１０ 支線アンカー ２０ 支線棒 ２１ フック部 ２２ ねじ部 ２３ ストッパー ３０ アンカーヘッド ３１ 上部材 ３１ａ 通り穴 ３２ 下部材 ３２ａ ねじ穴 ３３ 爪部材 ３４ リンク ３５ 支持軸 ３６，３７ ピン ３８ ナット ４０ 丸穴 ５０ 岩盤 ６０ 土 DESCRIPTION OF SYMBOLS 10 Branch line anchor 20 Branch line 21 Hook part 22 Screw part 23 Stopper 30 Anchor head 31 Upper member 31a Through hole 32 Lower member 32a Screw hole 33 Claw member 34 Link 35 Support shaft 36, 37 Pin 38 Nut 40 Round hole 50 Rock 60 Soil
Claims (2)
じ部を備えた支線棒。 （ロ）支線棒のねじ部を貫通させるための通り穴を備え
た上部材と、支線棒のねじ部とねじ結合するねじ穴を備
えた下部材と、下部材に支持軸を介して回転自在に取り
付けられた爪部材と、一端にて上部材に連結され、他端
にて爪部材に連結されたリンクとを備えたアンカーヘッ
ド。 上記（イ）（ロ）を具備し、支線棒の回転力を下部材の
上進運動に換え、更に下部材の上進運動により一対の爪
部材がそれぞれの支持軸を中心として回転することによ
り拡開可能であって、拡開後は下部材から横方向に突出
する、支線アンカーを設置する方法であって、次の工程
（ハ）（ニ）（ホ）（ヘ）（ト）からなる支線アンカー
の設置方法。 （ハ）丸穴を掘削する。 （ニ）アンカーヘッドを装着した支線棒をその丸穴に挿
入する。 （ホ）規定の深さで支線棒のフック部を回し、下部材の
上進運動により爪部材を拡開させて岩盤壁に密着させ
る。 （ヘ）埋め戻しをする。 （ト）支線棒に上向き力を加えて爪部材を十分に拡開さ
せる。1. A branch rod having a hook at one end and a screw at the other end. (B) An upper member having a through hole for penetrating the thread portion of the branch rod, a lower member having a screw hole to be screw-coupled to the thread portion of the branch rod, and a lower member rotatable via a support shaft. An anchor head comprising: a claw member attached to the claw member; and a link connected to the upper member at one end and connected to the claw member at the other end. By providing the above (a) and (b), the rotational force of the branch rod is changed to the upward movement of the lower member, and the pair of claw members are rotated about their respective support shafts by the upward movement of the lower member. A method of installing a branch anchor that is expandable and projects laterally from a lower member after expansion, and includes the following steps (c), (d), (e), (f), and (g). How to install branch anchors. (C) Drill a round hole. (D) Insert the branch rod with the anchor head into the round hole. (E) Turn the hook part of the branch rod at the specified depth , and
The claw member is expanded by the upward movement to make close contact with the rock wall. (F) Backfill. (G) Applying upward force to the branch rod to spread the claw member sufficiently
To Ru.
に拡開させた後、再度、支線棒のフック部を回して爪部
材が拡開した状態で固定することを特徴とする請求項１
の支線アンカーの設置方法。2. A claw member is sufficiently applied by applying an upward force to a branch rod.
2. After being widened , the hook portion of the branch wire rod is again turned to fix the claw member in an expanded state.
How to install branch anchors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15696397A JP3320637B2 (en) | 1997-06-13 | 1997-06-13 | How to install branch anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15696397A JP3320637B2 (en) | 1997-06-13 | 1997-06-13 | How to install branch anchor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001344657A Division JP3718648B2 (en) | 2001-11-09 | 2001-11-09 | Branch line anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH116148A JPH116148A (en) | 1999-01-12 |
| JP3320637B2 true JP3320637B2 (en) | 2002-09-03 |
Family
ID=15639154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15696397A Expired - Fee Related JP3320637B2 (en) | 1997-06-13 | 1997-06-13 | How to install branch anchor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3320637B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364458B (en) * | 2020-03-26 | 2021-04-09 | 中国十七冶集团有限公司 | Anti-floating anchor rod with telescopic head and construction method |
| CN113152458B (en) * | 2021-04-29 | 2022-08-16 | 绍兴市上虞区舜兴电力有限公司 | Earth anchor for electric power construction |
-
1997
- 1997-06-13 JP JP15696397A patent/JP3320637B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH116148A (en) | 1999-01-12 |
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