JP3131678U - Ring connection structure of large diameter hook - Google Patents

Ring connection structure of large diameter hook Download PDF

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JP3131678U
JP3131678U JP2007001270U JP2007001270U JP3131678U JP 3131678 U JP3131678 U JP 3131678U JP 2007001270 U JP2007001270 U JP 2007001270U JP 2007001270 U JP2007001270 U JP 2007001270U JP 3131678 U JP3131678 U JP 3131678U
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ring
washer
shear
hook
base end
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博志 中井
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Fujii Denko Co Ltd
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Fujii Denko Co Ltd
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Abstract

【課題】大口径フックの本体を鍛造品とし、意匠的にも高価に見えるものとし、連結するロープの撚り戻しを行いキンクの防止を図ると共に、負荷表示機能を設けて、安全性の向上を図る。
【解決手段】大口径フック1の基端部にナット部3を形成し、該ナット部3にボルト4でリング2を取付ける際に、スペースワッシャ5を挿入し、内輪61と外輪62を連結した形状の剪断ワッシャ6の内輪61を挟持し、該剪断ワッシャ6とリング2間に摺接ワッシャ7を配置し、該摺接ワッシャ7の面側に凸部71を設けると共に、剪断ワッシャ6の外周面に凹部61を設け、該剪断ワッシャ6の凹部61に嵌合し、剪断ワッシャ6と摺接ワッシャ7の回動を防止し、リング2に所定荷重が加われば、剪断ワッシャ6の外輪62を押し、内輪61と外輪62との連結部64を剪断し、リング2が基端部より離れて隙間が生じ、負荷がかかったことが確認できる構造。
【選択図】図1
[PROBLEMS] To make the main body of a large-diameter hook a forged product that looks expensive in terms of design, to prevent kinking by twisting the connecting rope, and to improve safety by providing a load display function. Plan.
A nut portion 3 is formed at a base end portion of a large-diameter hook 1, and when a ring 2 is attached to the nut portion 3 with a bolt 4, a space washer 5 is inserted to connect an inner ring 61 and an outer ring 62. An inner ring 61 of the shaped shear washer 6 is sandwiched, a sliding washer 7 is disposed between the shear washer 6 and the ring 2, a convex portion 71 is provided on the surface side of the sliding washer 7, and the outer periphery of the shear washer 6 A concave portion 61 is provided on the surface and fitted into the concave portion 61 of the shear washer 6 to prevent the shear washer 6 and the sliding contact washer 7 from rotating. When a predetermined load is applied to the ring 2, the outer ring 62 of the shear washer 6 is Pushing, shearing the connecting portion 64 between the inner ring 61 and the outer ring 62, and the ring 2 is separated from the base end to create a gap, so that a load can be confirmed.
[Selection] Figure 1

Description

本願は、高所作業者が墜落防止のために使用する安全帯の大口径フックのリング連結構造に関するものである。   The present application relates to a ring connection structure of a large-diameter hook of a safety belt that is used by an altitude worker to prevent a crash.

以前より安全帯のフックについては、墜落阻止等で大きな荷重が加わったものについては、再使用を禁止している。
しかしながら、大きな荷重が加わってフックの鉤部やリングが変形したならば確認できるのであるが、変形に至らないフックは確認のしようがなかった。
変形に至らないフックでも数回の落下衝撃荷重により内部応力の低下をきたし低荷重によってフックが破断あるいは変形し、掛止しているものから外れて重大事故につながることが考えられるものであった。
Safety hooks that have been subjected to heavy loads for preventing crashes are prohibited from being reused.
However, it can be confirmed if a large load is applied and the hook part or ring of the hook is deformed, but there is no way to confirm the hook that does not cause deformation.
Even with hooks that do not deform, it was thought that the internal stress decreased due to several drop impact loads, and the hooks were broken or deformed due to low loads, leading to a serious accident by detaching from the hooks. .

よって、特開2006−214149号・特願2006−261115号公報で開示したように負荷表示機能が備えられたリング連結構造がある。
開示した回動金具の構造は、ベルト等の撚り戻しのために用いたり、ロープの撚り戻しのために小口径フックの回転後部(リング)に応用したものであった。
Therefore, there is a ring connection structure provided with a load display function as disclosed in Japanese Patent Application Laid-Open No. 2006-214149 and Japanese Patent Application No. 2006-261115.
The structure of the disclosed rotating metal fitting was used for untwisting a belt or the like, or applied to a rotating rear portion (ring) of a small-diameter hook for untwisting a rope.

前記小口径フックのリング連結構造を大口径フックに応用するには、加工上不向きな構造であった。
なぜなら、小口径フックの基端部に設けた一体のボルト部は、旋盤のチャックに掴んで回転させ、バイトにより外形を削ってねじ切り加工を施すものであり、大口径フックは本体が大きく、旋盤のチャックに掴むことができないこともあり、製品化していないものであった。
In order to apply the ring connection structure of the small diameter hook to the large diameter hook, the structure is unsuitable for processing.
Because the integrated bolt part provided at the base end of the small diameter hook is gripped by a lathe chuck and rotated, and the outer shape is cut by a cutting tool and threaded, and the large diameter hook has a large main body. The product was not commercialized because it could not be grasped by the chuck.

現在、大口径フックは、建設現場の足場に使用されるφ48.6mmの単管パイプに直接掛止できるようにしたものであり、多くの作業者に使用されている。
大口径フックは、鉄板の打ち抜き品・鍛造品があるが、全て基端部はロープ連結用の穴を設けたものである。
したがって、ロープの撚り戻しができず、ロープにキンクを生じることがあり、基端部に別体のボルトを設け、それに回転後部を設けてロープの撚り戻しができるようにしたものがあるが、全長が長くなると共に、部品点数が増えてコスト的には高くなるが意匠的に安っぽく見えるものであった。また、落下した時の負荷表示機能を備えていないものであった。
特開2006−214149号 特願2006−261115号
At present, a large-diameter hook is designed to be directly hooked on a single pipe having a diameter of 48.6 mm used for a scaffolding at a construction site, and is used by many workers.
Large-diameter hooks include punched steel products and forged products, but the base ends are all provided with rope connection holes.
Therefore, the rope cannot be untwisted, and the rope may be kinked, and there is a bolt that can be untwisted by providing a separate bolt at the base end and providing a rotating rear part to it. As the overall length increased, the number of parts increased and the cost increased, but the design seemed cheaper. In addition, it did not have a load display function when dropped.
JP 2006-214149 A Japanese Patent Application No. 2006-261115

よって大口径フックの本体を鍛造品とし、意匠的にも高価に見えるものとし、他社製との差別化を図ると共に、連結するロープの撚り戻しを行いキンクの防止を図ると共に、負荷表示機能を設けて、安全性の向上を図るものである。   Therefore, the main body of the large-diameter hook is a forged product that looks expensive in design, differentiates it from other manufacturers, twists the connecting rope back to prevent kinks, and provides a load display function. It is intended to improve safety.

具体的には、大口径フック1の基端部に、回動自在に連結するリング2をボルト4で連結するのであるが、ボルト4を挿入する際に、剪断ワッシャ6を挟みこみリング2に引張荷重が加わると剪断ワッシャ6が剪断し、リング2が大口径フック1の基端部より離れて隙間が生じ、負荷がかかったことが確認できる構造である。   Specifically, a ring 2 that is rotatably connected to the base end portion of the large-diameter hook 1 is connected by a bolt 4. When the bolt 4 is inserted, a shear washer 6 is sandwiched between the ring 2 and the ring 2. When a tensile load is applied, the shear washer 6 is sheared, and the ring 2 is separated from the base end portion of the large-diameter hook 1 so that a gap is generated, and it can be confirmed that the load is applied.

以上のように、本願大口径フックのリング連結構造に負荷表示機能を備えたことにより、ロープの撚り戻しができ、キンクの発生を防止することができる。
また、リングの作動により、大きな衝撃荷重が加わったことが確認できるため、再使用を未然に防止し、重大事故を起こすことがなく、新しいフックに取替えることを促すことができる。
本願のリング連結構造は、安全帯のランヤード先端用フックだけでなく、垂直親綱の先端用フックとしても使用することができ、
As described above, since the load connection function is provided in the ring connection structure of the large-diameter hook of the present application, the rope can be untwisted and the occurrence of kinks can be prevented.
Further, since it can be confirmed that a large impact load has been applied by the operation of the ring, reuse can be prevented in advance, and it is possible to encourage replacement with a new hook without causing a serious accident.
The ring connection structure of the present application can be used not only as a lanyard tip hook of a safety belt, but also as a tip hook of a vertical master rope,

本願の実施例を詳記すると、
大口径フック1の基端部に、回動自在に連結するリング2の連結構造において、大口径フック1の基端部にナット部3を形成し、該ナット部3にボルト4でリング2を取付ける際に、スペースワッシャ5を挿入し、内輪61と外輪62を連結した形状の剪断ワッシャ6の内輪61を挟持し、該剪断ワッシャ6とリング2間に摺接ワッシャ7を配置し、該摺接ワッシャ7の面側に凸部71を設けると共に、剪断ワッシャ6の外周面に凹部63を設け、該剪断ワッシャ6の凹部63に嵌合し、剪断ワッシャ6と摺接ワッシャ7の回動を防止し、リング2に所定荷重が加われば、剪断ワッシャ6の外輪62を押し、内輪61と外輪62との連結部64を剪断し、リング2が基端部より離れて隙間が生じ、負荷がかかったことが確認できる構造を有している。
Detailed examples of the present application:
In the connection structure of the ring 2 that is rotatably connected to the base end portion of the large-diameter hook 1, a nut portion 3 is formed at the base end portion of the large-diameter hook 1, and the ring 2 is attached to the nut portion 3 with a bolt 4. At the time of mounting, the space washer 5 is inserted, the inner ring 61 of the shear washer 6 having a shape in which the inner ring 61 and the outer ring 62 are connected, and the sliding washer 7 is disposed between the shear washer 6 and the ring 2, and the sliding A convex portion 71 is provided on the surface side of the contact washer 7, and a concave portion 63 is provided on the outer peripheral surface of the shear washer 6. The concave portion 63 of the shear washer 6 is fitted, and the shear washer 6 and the sliding washer 7 are rotated. If a predetermined load is applied to the ring 2, the outer ring 62 of the shear washer 6 is pushed, the connecting portion 64 between the inner ring 61 and the outer ring 62 is sheared, the ring 2 is separated from the base end portion, and a gap is created. It has a structure that can be confirmed to have been applied.

また、本願実施例は、ウレタン製のカバー8を設け、剪断ワッシャ6への埃等の侵入を防ぎ、作動した場合には、ボルト4端側に押し出され乗り上げることによりリング2間に挟まり、外輪62を押圧状態に保持すると共に、負荷があったことを容易に確認できるものである。   In the embodiment of the present invention, a urethane cover 8 is provided to prevent dust and the like from entering the shear washer 6, and when operated, it is pushed to the end of the bolt 4 so as to be caught between the rings 2 and the outer ring. While holding 62 in a pressed state, it can be easily confirmed that there was a load.

また、本願実施例は、スペースワッシャ5の溝部51に赤色ペンキで帯状に塗布し、作動時に隙間より見えるようにし、より確認が容易としたものである。   In the embodiment of the present application, the groove portion 51 of the space washer 5 is coated with a red paint in a band shape so that it can be seen from the gap during operation, thereby making it easier to confirm.

図4に示すように、本願の剪断ワッシャ6は、内輪61と外輪62とを有し、内輪61と外輪62を連結部64で連結し、外周部に凹部63を設けたものである。
なお、大きな荷重が加わり、連結部64が剪断した場合には、内輪61はボルト4とスペースワッシャ5で挟んだ状態で、リング2の軸穴内に位置すると共に、外輪62は、ウレタン製のカバー8により押圧状態に保持し、ボルト4部に輪状で残り飛散や脱落がない。
また、外周部の凹部63は、摺接ワッシャ7の凸部71と嵌合し、摺接ワッシャ7の回動止めとしたものである。
As shown in FIG. 4, the shear washer 6 of the present application has an inner ring 61 and an outer ring 62, the inner ring 61 and the outer ring 62 are connected by a connecting portion 64, and a recess 63 is provided on the outer peripheral portion.
When a large load is applied and the connecting portion 64 is sheared, the inner ring 61 is located in the shaft hole of the ring 2 with the bolt 4 and the space washer 5 interposed therebetween, and the outer ring 62 is made of a urethane cover. 8 is held in a pressed state, and the bolt 4 part is ring-shaped and does not scatter or fall off.
Further, the concave portion 63 on the outer peripheral portion is fitted with the convex portion 71 of the sliding contact washer 7 to prevent the sliding contact washer 7 from rotating.

本願の大口径フックの加工は、フック本体を鍛造加工により基端部を盛り上げて製作したものであり、基端部の加工は、ボール盤で穴あけを施した後、タップ立て加工したものである。
本願の組み立ては、フック基端部に、リング2にスペースワッシャ5を挿入し、続いて摺接ワッシャ7の凸部71と剪断ワッシャ6の凹部63とを合わせて挿入し、ボルト4にウレタン製のカバー8を嵌入したボルト4を剪断ワッシャ6・摺接ワッシャ7・スペースワッシャ5の穴に嵌入し、ナット部3に螺着し、ナット部3にボール盤で貫通穴をあけてリベット9でボルト4を固定する。
なお、リング2の回転による摩擦部は摺接ワッシャ7が受けもつようにしたものであり、剪断ワッシャ6は、摩耗による剪断荷重の変動はない。
また、材料は、フックとボルト4は鋼製、摺接ワッシャ7はステンレス製、ワッシャ6は黄銅製である。
The processing of the large-diameter hook of the present application is produced by raising the base end portion of the hook body by forging, and the processing of the base end portion is performed by tapping after drilling with a drilling machine.
In the assembly of the present application, the space washer 5 is inserted into the ring 2 at the hook base end, and then the protrusion 71 of the sliding contact washer 7 and the recess 63 of the shear washer 6 are inserted together, and the bolt 4 is made of urethane. The bolt 4 fitted with the cover 8 is inserted into the holes of the shear washer 6, the sliding washer 7 and the space washer 5, screwed into the nut portion 3, a through hole is drilled in the nut portion 3 with a drilling machine, and the bolt with the rivet 9 4 is fixed.
Note that the frictional part due to the rotation of the ring 2 is handled by the sliding contact washer 7, and the shear washer 6 does not vary in shear load due to wear.
The material of the hook and bolt 4 is steel, the sliding contact washer 7 is made of stainless steel, and the washer 6 is made of brass.

本願大口径フックの基端部分解斜視図。The base end part exploded perspective view of this-application large-diameter hook. 本願大口径フックの基端部の切欠したところの正面図。The front view of the place which notched the base end part of this-application large diameter hook. 本願大口径フックの作動時の切欠したところの正面図。The front view of the place notched at the time of the action | operation of this application large diameter hook. 本願大口径フックの剪断ワッシャの破断状態斜視図。The fracture state perspective view of the shear washer of this application large diameter hook. 本願大口径フックの正面図。The front view of this application large diameter hook. 本願大口径フックの平面図。The top view of this-application large diameter hook.

符号の説明Explanation of symbols

1 大口径フック
2 リング
3 ナット部
4 ボルト
5 スペースワッシャ 51 溝部
6 剪断ワッシャ
61 内輪
62 外輪
63 凹部
64 連結部
7 摺接ワッシャ
71 凸部
8 カバー
9 リベット
1 Large bore hook 2 Ring 3 Nut 4 Bolt 5 Space washer 51 Groove 6 Shear washer
61 Inner ring
62 Outer ring
63 recess
64 Connection 7 Sliding contact washer
71 Convex part 8 Cover 9 Rivet

Claims (1)

大口径フック1の基端部に、回動自在に連結するリング2の連結構造において、大口径フック1の基端部にナット部3を形成し、該ナット部3にボルト4でリング2を取付ける際に、スペースワッシャ5を挿入し、内輪61と外輪62を連結した形状の剪断ワッシャ6の内輪61を挟持し、該剪断ワッシャ6とリング2間に摺接ワッシャ7を配置し、該摺接ワッシャ7の面側に凸部71を設けると共に、剪断ワッシャ6の外周面に凹部61を設け、該剪断ワッシャ6の凹部61に嵌合し、剪断ワッシャ6と摺接ワッシャ7の回動を防止し、リング2に所定荷重が加われば、剪断ワッシャ6の外輪62を押し、内輪61と外輪62との連結部64を剪断し、リング2が基端部より離れて隙間が生じ、負荷がかかったことが確認できることを特徴とする大口径フックのリング連結構造。   In the connection structure of the ring 2 that is rotatably connected to the base end portion of the large-diameter hook 1, a nut portion 3 is formed at the base end portion of the large-diameter hook 1, and the ring 2 is attached to the nut portion 3 with a bolt 4. At the time of mounting, the space washer 5 is inserted, the inner ring 61 of the shear washer 6 having the shape in which the inner ring 61 and the outer ring 62 are connected is sandwiched, and the sliding washer 7 is disposed between the shear washer 6 and the ring 2. A convex portion 71 is provided on the surface side of the contact washer 7, and a recess 61 is provided on the outer peripheral surface of the shear washer 6, and is fitted into the recess 61 of the shear washer 6 to rotate the shear washer 6 and the sliding washer 7. If a predetermined load is applied to the ring 2, the outer ring 62 of the shear washer 6 is pushed, the connecting portion 64 between the inner ring 61 and the outer ring 62 is sheared, the ring 2 is separated from the base end portion, and a gap is created. Large-diameter hook ring characterized by being able to confirm Quite concrete.
JP2007001270U 2007-02-28 2007-02-28 Ring connection structure of large diameter hook Expired - Lifetime JP3131678U (en)

Priority Applications (1)

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JP2007001270U JP3131678U (en) 2007-02-28 2007-02-28 Ring connection structure of large diameter hook

Publications (1)

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JP3131678U true JP3131678U (en) 2007-05-17

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