JPS6128635Y2 - - Google Patents
Info
- Publication number
- JPS6128635Y2 JPS6128635Y2 JP5090981U JP5090981U JPS6128635Y2 JP S6128635 Y2 JPS6128635 Y2 JP S6128635Y2 JP 5090981 U JP5090981 U JP 5090981U JP 5090981 U JP5090981 U JP 5090981U JP S6128635 Y2 JPS6128635 Y2 JP S6128635Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical guide
- hook
- fitted
- metal fitting
- fitting body
- 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
- 239000002184 metal Substances 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Ladders (AREA)
- Emergency Lowering Means (AREA)
- Bolts, Nuts, And Washers (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
- Pivots And Pivotal Connections (AREA)
Description
【考案の詳細な説明】
本考案は鉄塔組立工事に使用する移動用ロープ
取付金具に関する。[Detailed Description of the Invention] The present invention relates to a moving rope attachment fitting used in steel tower assembly work.
一般に送配電用の鉄塔を組み立てる際、作業者
の安全性の向上と作業の迅速化を図る為鉄塔部材
の任意の位置に移動用ロープ取付金具が取付けら
れているが、従来の取付金具はその安全性の面か
ら種々の欠点を有していた。 Generally, when assembling power transmission and distribution steel towers, moving rope attachment brackets are installed at arbitrary positions on the tower members in order to improve worker safety and speed up the work. It had various drawbacks in terms of safety.
例えば第１Ａ図に示す公知の取付金具の構成は
ナツト１，２を介してステツプボルト３と一体的
に鉄塔部材４に固定された取付金具５で、フツク
取付孔６とボルト取付孔７とを有し、ナツト１を
嵌着させたステツプボルト３を前記ボルト取付孔
７に嵌挿した後、これを鉄塔部材４に形成した孔
８に挿入し、ナツトにより両者３，５を一体的に
固定する構成である。 For example, the configuration of a known mounting bracket shown in FIG. 1A is a mounting bracket 5 that is integrally fixed to a steel tower member 4 with a step bolt 3 via nuts 1 and 2, and a hook mounting hole 6 and a bolt mounting hole 7 are connected to each other. After the step bolt 3 with the nut 1 fitted therein is inserted into the bolt attachment hole 7, it is inserted into the hole 8 formed in the steel tower member 4, and both 3 and 5 are integrally fixed with a nut. The configuration is as follows.
かかる取付金具５は鉄塔部材４に剛体的に固定
される構造の為移動用ロープ８が取付金具５の横
方向又は斜め上方に引張られた場合、衝撃力及び
ねじり力が働らき取付金具５のフツク孔６又はロ
ープ８先端のフツク９部分が破損する恐れがあ
り、又ナツト３のゆるむ方向に力が加つた場合ナ
ツト３のゆるみ等が生じる等安全性に問題があつ
た。 Since the mounting bracket 5 has a structure that is rigidly fixed to the steel tower member 4, when the moving rope 8 is pulled in the horizontal direction or diagonally upward of the mounting bracket 5, an impact force and a torsional force are applied to the mounting bracket 5. There was a risk that the hook hole 6 or the hook 9 portion at the end of the rope 8 would be damaged, and if force was applied in the direction of loosening the nut 3, the nut 3 would come loose, resulting in safety problems.
かかる欠点を防止する為、第１Ｂ図に示す如く
一側に円筒状ガイド１０ａを形成したナツト１０
をステツプボルト３に嵌着させ、ここに前記取付
金具５を嵌挿させた後、鉄頭部材４に固定すれば
ステツプボルト３は完全に固定されるが、取付金
具４は回転可能になる考案が考えられる。 In order to prevent such defects, a nut 10 having a cylindrical guide 10a formed on one side as shown in FIG. 1B is used.
If the step bolt 3 is fitted onto the step bolt 3, the mounting bracket 5 is fitted and inserted therein, and then fixed to the iron head member 4, the step bolt 3 is completely fixed, but the mounting bracket 4 is designed to be rotatable. is possible.
かかる考案においては確かに前記欠点は解消出
来るが、鉄塔部材４−取付金具５′−ナツト１０
間にガタが生ずる為、風等により前記取付金具が
振れ、騒音発生の起因となる。またフツク取付孔
６′が取付金具５′回転方向に向いている為、該孔
６′にフツク９を取り付ける際フツク９と共に取
付金具５′が動いてしまうので取付けにくいとい
う欠点を有する。 Although this invention can certainly eliminate the above-mentioned drawbacks, the tower member 4 - mounting bracket 5' - nut 10
Since there is a gap between the mounting bracket and the hook 9, the mounting bracket 5' will swing due to wind or the like, which will cause noise. Also, since the hook mounting hole 6' faces the direction of rotation of the mounting bracket 5', when the hook 9 is attached to the hole 6', the mounting bracket 5' will move together with the hook 9, which makes the installation difficult.
本考案はかかる従来技術の欠点に鑑み、安全性
の確保と作業性の向上を図ると共に騒音公害の発
生を防止し得る移動用ロープ取付金具を提供する
事を目的とし、その特徴とする所は、ステツプボ
ルトに嵌着され、鉄塔部材表面に当接可能に構成
したナツトの鉄塔部材側周面に同軸上に円筒状ガ
イド部を形成し、該円筒状ガイド部に、フツク取
付用金具本体を回動自在に遊嵌させた移動用ロー
プ取付け金具において、上方に円筒状ガイド部挿
入孔を、下方にフツク取付孔を形成した略断面
「く」の字状の金具本体と、前記ガイド部先端円
周部に止め輪が嵌着可能にリング溝を形成した特
殊ナツトと、前記金具本体の円筒状ガイド部挿入
孔とその両側壁面周縁部に介装される一対の摺動
シールと、前記リング溝に弾性的に嵌着可能な止
め輪とを有し、前記一対の摺動シールを介して円
筒状ガイド部に遊嵌された前記金具本体が、前記
リング溝に嵌着された止め輪により回転可能に保
持される如く構成した移動用ロープ取付金具を提
供することある。 In view of the shortcomings of the prior art, the present invention aims to provide a moving rope mounting bracket that can ensure safety, improve workability, and prevent noise pollution. A cylindrical guide part is formed coaxially on the side circumferential surface of the steel tower member of the nut, which is fitted onto the step bolt and configured to be able to come into contact with the surface of the steel tower member, and a hook mounting metal body is attached to the cylindrical guide part. A moving rope attachment fitting that is loosely fitted in a rotatable manner includes a fitting main body having a substantially doglegged cross section with a cylindrical guide insertion hole formed above and a hook attachment hole below; a special nut having a ring groove formed in its circumferential portion into which a retaining ring can be fitted; a pair of sliding seals interposed in the cylindrical guide insertion hole of the metal fitting body and the peripheral edges of both side walls thereof; and the ring. The metal fitting main body, which has a retaining ring that can be elastically fitted into the groove, and is loosely fitted into the cylindrical guide part via the pair of sliding seals, is rotated by the retaining ring fitted into the ring groove. A moving rope attachment device configured to be rotatably held is provided.
以下図面に基ずいて本考案を説明する。 The present invention will be explained below based on the drawings.
第２図乃至第４図はいずれも本考案の一実施例
で、１１は特殊ナツト、１２，１３は１対のリン
グ状の摺動シール、１５は止め輪を示す。 2 to 4 each show an embodiment of the present invention, in which 11 shows a special nut, 12 and 13 a pair of ring-shaped sliding seals, and 15 a retaining ring.
特殊ナツト１１は、ネジ孔１１ｃと同軸上に円
筒状ガイド１１ａが形成され、そのガイド１１ａ
直径は少なくともナツト１１最大幅より小にする
と共に、その先端円周部に止め輪１５を嵌挿する
為のリング溝１１ｂを形成する。 The special nut 11 has a cylindrical guide 11a formed coaxially with the screw hole 11c, and the guide 11a
The diameter is at least smaller than the maximum width of the nut 11, and a ring groove 11b for fitting the retaining ring 15 is formed in the circumference of the tip.
摺動シール１２，１３は、摩擦抵抗の少ない軟
質体、例えばテフロン樹脂で形成されたリング状
の薄板で、前記円筒状ガイド部１１ａ外径とほぼ
同径の内径を有すると共に、その内径の一部に円
周方向に沿つて互いに対向させて90度屈曲させた
突出片１２ａ，１３ａを各一対ずつ形成し、後記
する金具本体１４の円筒状ガイド部挿入孔１４ａ
とその両側壁面周縁部に当接可能に構成する。 The sliding seals 12 and 13 are ring-shaped thin plates made of a soft material with low frictional resistance, such as Teflon resin, and have an inner diameter that is approximately the same as the outer diameter of the cylindrical guide portion 11a, and a portion of the inner diameter. A pair of protruding pieces 12a and 13a are formed in each of the parts along the circumferential direction, facing each other and bent at 90 degrees.
and the peripheral edges of both side walls thereof.
金具本体１４はその肉厚h′が円筒状ガイド部１
１ａ高さｈより僅かに小に形成すると共に、断面
略くの字状に折曲し、上方には円筒状ガイド部挿
入孔１４ａを、下方にはフツク取付孔１４ｂを形
成する。円筒状ガイド部挿入孔１４ａはガイド１
１ａ外径より僅かに大に形成すると共に、その一
側端部に大きな面取り１４ｃを行ない、円筒状ガ
イド部１１ａに挿入した際、該円筒状ガイド部１
１ａ先端部のリング溝１１ｂが露出するよう形成
する。 The wall thickness h′ of the metal fitting body 14 is the same as that of the cylindrical guide portion 1.
1a is formed to be slightly smaller than the height h, and is bent to have a substantially doglegged cross section, with a cylindrical guide insertion hole 14a formed above and a hook attachment hole 14b formed below. The cylindrical guide part insertion hole 14a is the guide 1
The outer diameter of the cylindrical guide part 1a is slightly larger than the outer diameter of the cylindrical guide part 1a, and a large chamfer 14c is formed on one end of the cylindrical guide part 1a.
The ring groove 11b at the tip of 1a is formed to be exposed.
尚、面取り１４ｃを行なわない場合にあつて
は、金具本体１４を前記円筒状ガイド部１１a′に
挿入した際該円筒状ガイド部先端のリング溝１１
ｂが一側端部より露出するよう金具本体１４肉厚
又はリング溝１１ｂの形成位置を決定すれば良
い。 In addition, in the case where the chamfering 14c is not performed, when the metal fitting main body 14 is inserted into the cylindrical guide portion 11a', the ring groove 11 at the tip of the cylindrical guide portion
The thickness of the metal fitting main body 14 or the formation position of the ring groove 11b may be determined so that b is exposed from one end.
又金具本体１４の屈曲部にはＶ形状の押型１４
ｄを形成し、補強部となす。 In addition, a V-shaped press die 14 is provided at the bent part of the metal fitting body 14.
d to serve as a reinforcing part.
又、前記リング溝１１ｂに弾性的に嵌着可能に
形成した止め輪１５は、前記リング溝１１ｂに取
り付けた際金具本体１４が脱落しない程度の太さ
を有す。 Further, the retaining ring 15 formed to be able to be elastically fitted into the ring groove 11b has a thickness such that the metal fitting main body 14 does not fall off when attached to the ring groove 11b.
次に、かかる部材の取付方法を説明するに、先
ず金具本体１４の円筒状円筒状ガイド部部挿入孔
１４ａの両側に、突出片１２ａ，１３ａが互いに
対向且つ90角度変位するごとく配した摺動シール
１２，１３を挟み込み、次にこれを一体として特
殊ナツト１１の円筒状ガイド部１１ａに回転可能
に遊嵌させ、最後に円筒状ガイド部挿入孔１４ａ
より露出したリング溝１１ｂに止め輪１５を弾性
的に嵌着させ、摺動シール１３の固定と金具本体
１４の脱落防止を図る。 Next, in order to explain how to attach such a member, first, the protruding pieces 12a and 13a are arranged on both sides of the cylindrical guide part insertion hole 14a of the fitting body 14 so as to face each other and are displaced by 90 degrees. The seals 12 and 13 are sandwiched, and then they are rotatably and loosely fitted into the cylindrical guide part 11a of the special nut 11, and finally the cylindrical guide part insertion hole 14a is inserted.
A retaining ring 15 is elastically fitted into the more exposed ring groove 11b to fix the sliding seal 13 and prevent the metal fitting body 14 from falling off.
そして前記の方法で組立られた取付金具は第１
Ａ，１Ｂ図と同様にステツプボルト３に螺着後、
これを鉄塔部材の孔４ａに挿し込み、裏側よりナ
ツト２で固定する。 The mounting bracket assembled in the above manner is the first
After screwing onto the step bolt 3 in the same way as in Figures A and 1B,
This is inserted into the hole 4a of the steel tower member and fixed with a nut 2 from the back side.
この場合ステツプボルト３はナツト１１とナツ
ト２により完全に固定されるが、金具本体１４は
その肉厚h′が特殊ナツト１１の円筒状ガイド部高
さｈより小のため、金具本体１４は自由に回転し
得る。 In this case, the step bolt 3 is completely fixed by the nuts 11 and 2, but since the wall thickness h' of the metal fitting body 14 is smaller than the height h of the cylindrical guide part of the special nut 11, the metal fitting body 14 is free. It can be rotated to
又、金具本体１４両側に挟持された一対の摺動
シール１２，１３がクツシヨン材の役目を果す為
金具本体１４を特殊ナツト１１の円筒状ガイド部
１１ａに止め輪１５を介して固定した際、第１Ｂ
図に示す考案と異なり、ガタが生ずる事なく且つ
回転可能にゆるやかに固定される事となる。 Also, since the pair of sliding seals 12 and 13 held on both sides of the metal fitting body 14 serve as a cushioning material, when the metal fitting body 14 is fixed to the cylindrical guide portion 11a of the special nut 11 via the retaining ring 15, 1st B
Unlike the device shown in the figure, the device is rotatably and loosely fixed without any play.
又、第１Ｂ図に示す考案によれば金具本体１４
の回転方向と同一方向にフツク取付孔１４ｂを形
成したため、フツク９を掛ける際金具本体１４が
逃げて掛けにくいが、本考案による実施例によれ
ば、金具本体１４を断面略くの字状に形成し、フ
ツク取付孔１４ｂを鉄塔部材４面と対向して配置
されている為、フツク９を取付ける際、金具本体
が逃げることなく掛け易い等、第１Ｂ図に示す従
来技術の欠点も解消し得る。 Moreover, according to the invention shown in FIG. 1B, the metal fitting body 14
Since the hook attachment hole 14b is formed in the same direction as the rotating direction of the hook 9, the metal fitting body 14 escapes when the hook 9 is hung, making it difficult to hang it.However, according to the embodiment of the present invention, the metal fitting body 14 has a substantially doglegged cross section. Since the hook mounting hole 14b is arranged to face the 4th side of the steel tower member, the drawbacks of the conventional technology shown in Fig. 1B are overcome, such as when the hook 9 is attached, it is easy to hang it without the metal fitting body escaping. obtain.
即ち第１Ｂ図に示す従来技術の金具本体５′の
フツク取付孔６′は、そのフツク９取付方向が鉄
塔部材４面と直交する方向即ちステツプボルト３
の回転方向に向いている為に、フツク９を前記取
付孔６′に掛止しようとすると、金具本体５′がス
テツプボルト３の周りを回動してしまい、中々掛
止出来ない。 That is, the hook attachment hole 6' of the metal fitting body 5' of the prior art shown in FIG.
Since the hook 9 is oriented in the direction of rotation, when an attempt is made to hook the hook 9 into the mounting hole 6', the metal fitting body 5' rotates around the step bolt 3, making it difficult to hook the hook 9 into the mounting hole 6'.
一方本考案においては、金具本体１４を断面略
くの字状に形成し、鉄塔部材４面との間にフツク
９が掛止可能な隙間を形成すると共に、フツク取
付孔１４ｂを鉄塔部材４面と対向して配置した
為、フツク取付方向がステツプボルト３の回転方
向ではなく軸線方向になり、一方金具本体１４
は、その上方に穿設された円筒状ガイド部挿入孔
１４ａに挿入された特殊ナツト１１と鉄塔部材４
面によりステツプボルト３軸線方向に挟持されて
いる為に、フツク９をフツク取付孔１４ｂに取付
ける際、金具本体１４が回転することなく確実に
掛止を行なうことが出来る。 On the other hand, in the present invention, the metal fitting main body 14 is formed into a substantially dogleg shape in cross section, and a gap is formed between the fitting body 14 and the four sides of the steel tower member in which the hook 9 can be hung, and the hook attachment hole 14b is formed on the four sides of the steel tower member. Since the hook is placed facing the step bolt 3, the direction in which the hook is installed is in the axial direction rather than in the rotating direction of the step bolt 3.
The special nut 11 and the steel tower member 4 are inserted into the cylindrical guide insertion hole 14a bored above the special nut 11 and the steel tower member 4.
Since the step bolt 3 is held between the surfaces in the axial direction, when the hook 9 is attached to the hook attachment hole 14b, the fitting body 14 can be reliably engaged without rotating.
以上の記載より明らかな如く、従来の金具は第
１Ａ図に示す如く金具にフツクを掛け、移動用ロ
ープがステツプボルトに引掛かつて引張られた場
合、ナツトのゆるみが生じ、又反対方向に荷重が
加わるとその衝撃力等によつて安全性に問題が生
じるが、本考案は特殊ナツトが完全に固定されて
いても金具本体が360度自由に回転する為、移動
用ロープがステツプボルトに掛けられても、又横
方向等に引つ張られてもロープに荷重が加えられ
る方向に金具本体が移動し、ナツトやフツクに無
理な力が加わる事はなく、特殊ナツトのゆるみや
フツクの破損が生じる事は全くない。 As is clear from the above description, in the case of conventional fittings, when a hook is attached to the fitting as shown in Fig. 1A, and the moving rope is hooked on the step bolt and is pulled, the nut becomes loose and a load is applied in the opposite direction. If this is applied, the impact force will cause safety problems, but with this invention, even if the special nut is completely fixed, the metal fitting body can freely rotate 360 degrees, so the moving rope can be hung on the step bolt. Even if the rope is pulled in the horizontal direction, the metal fitting body will move in the direction in which the load is applied to the rope, and no excessive force will be applied to the nut or hook, preventing the special nut from loosening or the hook from breaking. Nothing happens at all.
又、特殊ナツトの円筒状ガイド部と金具本体の
間に介装した摺動シールもクツシヨン材の役目を
有する為衝撃力が弱まり、更にその効果が高ま
る。 Furthermore, the sliding seal interposed between the cylindrical guide portion of the special nut and the metal fitting body also serves as a cushioning material, thereby weakening the impact force and further enhancing its effectiveness.
更に本考案は金具本体両側に摺動シールを挟持
介装させた為ガタが生ずる事なく騒音公害が生ず
る事はない。 Furthermore, since the present invention has sliding seals sandwiched between both sides of the metal fitting body, there is no rattling and no noise pollution.
又、本考案は金具本体を断面略くの字状に形成
し、フツク取付孔を鉄塔部材面と対向して配置さ
れる為フツクの取付が容易である。 In addition, the present invention forms the metal fitting body into an approximately L-shaped cross section and positions the hook mounting hole opposite the surface of the tower component, making it easy to attach the hook.
更に本考案は止め輪により固定する構成の為取
付け、取外しが容易である。 Furthermore, since the present invention is fixed using a retaining ring, it is easy to install and remove.
等の種々の効果を有す。 It has various effects such as
第１Ａ図は従来技術、第１Ｂ図は他の考案の説
明図、第２図ないし第４図はいずれも本考案の実
指令を示し、第２図は１部断面図、第３図は分解
図及び第４図は要部拡大図である。
１１……特殊ナツト、１１ａ……部、１１ｂ…
…リング溝、１２，１３……摺動シール、１２
ａ，１３ａ……摺動シール、１４……金具本体、
１５……止め輪。
Figure 1A is the prior art, Figure 1B is an explanatory diagram of another invention, Figures 2 to 4 all show the actual instructions of the present invention, Figure 2 is a partial sectional view, and Figure 3 is an exploded view. The figure and FIG. 4 are enlarged views of main parts. 11...special nut, 11a...part, 11b...
...Ring groove, 12, 13...Sliding seal, 12
a, 13a...Sliding seal, 14...Metal fitting body,
15...Retaining ring.
Claims (1)
接可能に構成したナツトの鉄塔部材側周面に同軸
上に円筒状ガイド部を形成し、該円筒状ガイド部
に、フツク取付用金具本体を回動自在に遊嵌させ
た移動用ロープ取付け金具において、上方に円筒
状ガイド部挿入孔を、下方にフツク取付孔を形成
した略断面「く」の字状の金具本体と、前記ガイ
ド部先端円周部に止め輪が嵌着可能にリング溝を
形成した特殊ナツトと、前記金具本体の円筒状ガ
イド部挿入孔とその両側壁面周縁部に介装される
一対の摺動シールと、前記リング溝に弾性的に嵌
着可能な止め輪とを有し、前記一対の摺動シール
を介して円筒状ガイド部に遊嵌された前記金具本
体が、前記リング溝に嵌着された止め輪により回
転可能に保持される如く構成した事を特徴とする
移動用ロープ取付金具。 A cylindrical guide part is formed coaxially on the side circumferential surface of the steel tower member of the nut, which is fitted onto the step bolt and configured to be able to come into contact with the surface of the steel tower member, and the hook mounting bracket body is rotated around the cylindrical guide part. A moving rope attachment fitting that is loosely fitted so as to be movable includes a fitting body having a substantially doglegged cross section with a cylindrical guide insertion hole formed above and a hook attachment hole below; A special nut having a ring groove formed on the periphery to which a retaining ring can be fitted, a pair of sliding seals interposed in the cylindrical guide insertion hole of the metal fitting body and the peripheral edges of both side walls thereof, and the ring groove. and a retaining ring that can be elastically fitted into the ring groove, and the metal fitting body, which is loosely fitted into the cylindrical guide part via the pair of sliding seals, is rotated by the retaining ring fitted into the ring groove. A moving rope mounting bracket characterized in that it is configured such that it can be held easily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5090981U JPS6128635Y2 (en) | 1981-04-10 | 1981-04-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5090981U JPS6128635Y2 (en) | 1981-04-10 | 1981-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57163256U JPS57163256U (en) | 1982-10-14 |
| JPS6128635Y2 true JPS6128635Y2 (en) | 1986-08-25 |
Family
ID=29847618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5090981U Expired JPS6128635Y2 (en) | 1981-04-10 | 1981-04-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6128635Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665627B1 (en) * | 2006-08-31 | 2007-01-09 | 허동석 | Protecting falling for lifesaving rope |
| JP5431676B2 (en) * | 2008-02-13 | 2014-03-05 | 戸田建設株式会社 | Lifting and lifting jig |
| GB2538273B (en) | 2015-05-13 | 2018-04-04 | Rapid Rail International Ltd | Step-bolt adaptor |
-
1981
- 1981-04-10 JP JP5090981U patent/JPS6128635Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57163256U (en) | 1982-10-14 |
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