JP2010048377A - Opening/closing type eye bolt - Google Patents

Opening/closing type eye bolt Download PDF

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Publication number
JP2010048377A
JP2010048377A JP2008214571A JP2008214571A JP2010048377A JP 2010048377 A JP2010048377 A JP 2010048377A JP 2008214571 A JP2008214571 A JP 2008214571A JP 2008214571 A JP2008214571 A JP 2008214571A JP 2010048377 A JP2010048377 A JP 2010048377A
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Japan
Prior art keywords
eyebolt
lock bolt
hole
screw
screw shaft
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Pending
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JP2008214571A
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Japanese (ja)
Inventor
Magoichi Hasebe
孫一 長谷部
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Mitaka Kohki Co Ltd
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Mitaka Kohki Co Ltd
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Publication date
Application filed by Mitaka Kohki Co Ltd filed Critical Mitaka Kohki Co Ltd
Priority to JP2008214571A priority Critical patent/JP2010048377A/en
Publication of JP2010048377A publication Critical patent/JP2010048377A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening/closing type eye bolt capable of carrying out connection of slinging wire ropes or the like without a shackle. <P>SOLUTION: An eye bolt body 2 is U-shaped, and since it becomes a closed loop structure for the first time by screwing a lock bolt 3 between its both ends, connection of slinging wire ropes 1 becomes possible even without a shackle. Since a flat head 12 is formed on a base end of the lock bolt 3, screwing work with respect to the eye bolt body 2 of the lock bolt 3 can be carried out by holding the flat head 12 by hand. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は開閉式アイボルトに関するものである。   The present invention relates to an openable eyebolt.

従来、重量物を玉掛けして吊り上げたりする場合にアイボルトが利用される。アイボルトは、リング状本体の下部にネジ軸を形成した構造で、重量物に形成されたタップ穴にネジ軸を螺合させてアイボルトを取り付け、リング状本体に玉掛けロープを連結して、クレーン等で吊り上げる(例えば、特許文献1参照)。
特開平7−217630号公報
Conventionally, an eyebolt is used when a heavy object is hung and hung. The eyebolt has a structure in which a screw shaft is formed at the bottom of the ring-shaped body. The eyebolt is attached by screwing the screw shaft into a tapped hole formed in a heavy object, and a sling rope is connected to the ring-shaped body, and a crane or the like. (See, for example, Patent Document 1).
JP 7-217630 A

しかしながら、このような従来の技術にあっては、アイボルトのリング状本体が閉ループ構造のため、同じく先端が閉ループ状になった玉掛けワイヤロープを使用する場合には、いったんアイボルトのリング状本体にシャックルを取付け、シャックルを介して玉掛けワイヤロープの閉ループ状の先端を連結する必要がある。シャックルはU字状の本体と、その両端を貫通するボルトとから構成され、ボルトを着脱することで、玉掛けワイヤロープの連結及び取り外しが可能となると、シャックルという別部品を用意しなければならないため面倒である。   However, in such a conventional technique, since the ring-shaped body of the eyebolt has a closed loop structure, when a sling wire rope having a closed loop shape at the tip is used, the eyebolt ring-shaped body is once shackled. It is necessary to connect the closed loop end of the sling wire rope through the shackle. The shackle is composed of a U-shaped body and bolts that penetrate both ends of the U-shaped body. When the bolts can be attached and detached to connect and remove the sling wire rope, a separate part called a shackle must be prepared. It is troublesome.

本発明は、このような従来の技術に着目してなされたものであり、シャックル無しで玉掛けワイヤロープ等の連結が可能な開閉式アイボルトを提供するものである。   The present invention has been made paying attention to such a conventional technique, and provides an openable eyebolt that can be connected to a sling wire rope or the like without a shackle.

請求項1記載の発明は、底面にネジ軸が形成され且つ両端部に貫通孔とネジ孔が形成された概略U型のアイボルト本体と、前記貫通孔からネジ孔へ挿入自在で且つ先端にネジ孔に螺合するネジ部が形成されたロックボルトとから構成されたことを特徴とする。   According to the first aspect of the present invention, there is provided a generally U-shaped eyebolt body having a screw shaft formed on the bottom surface and a through hole and a screw hole formed at both ends, a screw that can be inserted into the screw hole from the through hole, and a screw at the tip. It is characterized by comprising a lock bolt formed with a screw portion screwed into the hole.

請求項2記載の発明は、底面にネジ軸が形成され且つ両端部のそれぞれに貫通孔が形成された概略U型のアイボルト本体と、前記両貫通孔に挿入自在で且つ先端にネジ部が形成されたロックボルトと、前記ロックボルトの前記ネジ部に螺合するロックナットとから構成されたことを特徴とする。   According to the second aspect of the present invention, a substantially U-shaped eyebolt body having a screw shaft formed on the bottom surface and through-holes formed at both ends, and a threaded portion formed at both ends that can be inserted into the through-holes. And a lock nut screwed into the threaded portion of the lock bolt.

請求項3記載の発明は、ロックボルトの基端に扁平頭部が形成されていることを特徴とする。   The invention according to claim 3 is characterized in that a flat head is formed at the base end of the lock bolt.

請求項4記載の発明は、前記ネジ軸は前記アイボルト本体において回動自在に固定されていることを特徴とする。   The invention according to claim 4 is characterized in that the screw shaft is rotatably fixed in the eyebolt body.

請求項1または請求項2記載の発明によれば、アイボルト本体がU字形で、その両端にロックボルトを螺合することで、はじめて閉ループ構造になるため、シャックル無しでも、玉掛けワイヤロープ等の連結が可能である。   According to the first or second aspect of the present invention, since the eyebolt body is U-shaped and a lock bolt is screwed to both ends of the eyebolt body, it becomes a closed loop structure for the first time. Is possible.

請求項3記載の発明は、ロックボルトの基端に扁平頭部が形成されているため、該扁平頭部を手で持ってロックボルトのアイボルト本体に対する螺合作業を行うことができる。   According to the third aspect of the present invention, since the flat head is formed at the base end of the lock bolt, the lock bolt can be screwed to the eyebolt body by holding the flat head by hand.

請求項4の記載の発明によれば、玉掛けワイヤロープの引っ張り方向に対してロックボルトを適切な位置に回動することができる。   According to invention of Claim 4, a lock bolt can be rotated to an appropriate position with respect to the pulling direction of a slinging wire rope.

以下、図1及び図2に基づいて、本発明の好適な実施形態を説明する。   Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. 1 and 2.

この実施形態に係るアイボルト1は、概略U字形のアイボルト本体2と、ロックボルト3とから構成されている。   The eyebolt 1 according to this embodiment includes a substantially U-shaped eyebolt body 2 and a lock bolt 3.

アイボルト本体2の底面にはネジ軸4が形成されている。このネジ軸4は吊り上げる重量物5のタップ穴6に螺合される部分である。アイボルト本体2の両端部7、8は幅が広く形成され、それぞれ貫通孔9とネジ孔10が形成されている。   A screw shaft 4 is formed on the bottom surface of the eyebolt body 2. The screw shaft 4 is a portion screwed into the tap hole 6 of the heavy object 5 to be lifted. Both end portions 7 and 8 of the eyebolt main body 2 are formed wide, and a through hole 9 and a screw hole 10 are formed respectively.

ロックボルト3は、アイボルト本体2の両端部7、8間に挿入可能な長さを有し、先端にはアイボルト本体2のネジ孔10に螺合可能なネジ部11が形成されている。ロックボルト3の基端にはロックボルト3の径よりも大径なリング状の扁平頭部12が形成されている。   The lock bolt 3 has a length that can be inserted between both end portions 7 and 8 of the eyebolt body 2, and a screw portion 11 that can be screwed into the screw hole 10 of the eyebolt body 2 is formed at the tip. A ring-shaped flat head 12 having a diameter larger than the diameter of the lock bolt 3 is formed at the base end of the lock bolt 3.

この開閉アイボルト1を用いて、重量物5を吊り上げる場合、まずアイボルト本体2のネジ軸4を重量物5のタップ穴6に螺合して、アイボルト本体2を重量物5と連結する。この時、アイボルト本体2は、まだ開いた状態である。   When lifting the heavy object 5 using the open / close eyebolt 1, first, the screw shaft 4 of the eyebolt body 2 is screwed into the tap hole 6 of the heavy object 5 to connect the eyebolt body 2 to the heavy object 5. At this time, the eyebolt body 2 is still open.

次に、吊り上げ用の玉掛けワイヤロープ13のループ状先端部14をアイボルト本体2の両端部7、8間に位置させる。そして、ロックボルト3を先端のネジ部11から貫通孔9に通し、ロックボルト3の先端を玉掛けワイヤロープ13のループ状先端部14に通した後、そのまま、反対側のネジ孔10に螺合させる。ロックボルト3の螺合回転作業は、ロックボルト3の基端の扁平頭部21を持って行うことにより、容易に行うことができる。   Next, the loop-shaped tip 14 of the sling wire rope 13 for lifting is positioned between both ends 7 and 8 of the eyebolt body 2. Then, the lock bolt 3 is passed through the through-hole 9 from the screw portion 11 at the tip, and the tip of the lock bolt 3 is passed through the loop-like tip portion 14 of the sling wire rope 13 and then screwed into the screw hole 10 on the opposite side as it is. Let The threaded rotation of the lock bolt 3 can be easily performed by holding the flat head 21 at the base end of the lock bolt 3.

ロックボルト3を螺合したことにより、アイボルト本体2は閉じた状態となり、玉掛けワイヤロープ13によりアイボルト1を介して重量物5を吊り上げることができる。   By screwing the lock bolt 3, the eyebolt body 2 is in a closed state, and the heavy object 5 can be lifted via the eyebolt 1 by the sling wire rope 13.

上記の変形例として、ネジ孔10の代わりに貫通孔を形成してもよい。この場合、ロックボルト3を両貫通孔に挿入した後、ロックナット(図示せず)をネジ部11に螺合させる。この構成による効果は上記と同様である。   As a modified example, a through hole may be formed instead of the screw hole 10. In this case, after inserting the lock bolt 3 into both through holes, a lock nut (not shown) is screwed into the screw portion 11. The effect of this configuration is the same as described above.

図示しない更なる変形例として、ネジ軸4をアイボルト本体2において回動自在に固定してもよい。例えば、アイボルト本体2の底部に貫通孔を形成し、その中にネジ軸4を挿通して回動可能に固定する。そして、ネジ軸4がこの貫通孔から抜け出ないように当該貫通孔よりも大きい径の頭部をネジ軸4の先端に設ける。この頭部は螺合や圧入嵌合等による接合でよい。上記貫通孔の代わりに止め孔を形成し、上記頭部をアイボルト本体2内に収めてもよい。さらに、回動を円滑にするための軸受機構をネジ軸4と貫通孔或いは止め孔との間に併設しても良い。これらの構成では、アイボルト1を相手側に固定した後でも、玉掛けワイヤロープの引っ張り方向に対してロックボルトを適切な位置に回動することができるので、ロックボルト3とアイボルト本体2との当接部における負荷が軽減される。   As a further modification (not shown), the screw shaft 4 may be fixed to the eyebolt body 2 so as to be rotatable. For example, a through hole is formed in the bottom of the eyebolt body 2, and the screw shaft 4 is inserted into the through hole and fixed in a rotatable manner. Then, a head having a diameter larger than the through hole is provided at the tip of the screw shaft 4 so that the screw shaft 4 does not come out of the through hole. This head may be joined by screwing or press fitting. A stop hole may be formed instead of the through hole, and the head may be housed in the eyebolt body 2. Further, a bearing mechanism for smooth rotation may be provided between the screw shaft 4 and the through hole or the stop hole. In these configurations, even after the eyebolt 1 is fixed to the other side, the lockbolt can be rotated to an appropriate position with respect to the pulling direction of the slinging wire rope. The load at the contact portion is reduced.

また本発明は図面に示す形態に限定されない。例えば、アイボルト本体2は、その断面を円形または楕円等としてもよい。   The present invention is not limited to the form shown in the drawings. For example, the eyebolt body 2 may have a circular or elliptical cross section.

以上説明したように、ループ状先端部14を有する玉掛けワイヤロープ13を利用して重量物5を吊り上げる場合も、アイボルト1だけの利用で吊り上げることができ、従来のようなシャックルを用いる必要がないため、作業が容易である。   As described above, even when the heavy object 5 is lifted using the sling wire rope 13 having the loop-shaped tip portion 14, it can be lifted only by using the eyebolt 1, and there is no need to use a conventional shackle. Therefore, work is easy.

本発明の一実施形態に係る開閉式アイボルトを示す斜視図。1 is a perspective view showing an openable eyebolt according to an embodiment of the present invention. 開閉式アイボルトを示す断面図。Sectional drawing which shows an open / close type eyebolt.

符号の説明Explanation of symbols

1 開閉式アイボルト
2 アイボルト本体
3 ロックボルト
4 ネジ軸
5 重量物
6 タップ穴
7、8 両端部
9 貫通孔
10 ネジ孔
11 ネジ部
12 扁平頭部
13 玉掛けワイヤロープ
14 ループ状先端部
DESCRIPTION OF SYMBOLS 1 Open / close-type eyebolt 2 Eyebolt main body 3 Lock bolt 4 Screw shaft 5 Heavy object 6 Tap hole 7, 8 Both ends 9 Through hole 10 Screw hole 11 Screw part 12 Flat head 13 Sling wire rope 14 Loop-shaped tip part

Claims (4)

底面にネジ軸が形成され且つ両端部に貫通孔とネジ孔が形成された概略U型のアイボルト本体と、前記貫通孔からネジ孔へ挿入自在で且つ先端にネジ孔に螺合するネジ部が形成されたロックボルトとから構成されたことを特徴とする開閉式アイボルト。   A generally U-shaped eyebolt body having a screw shaft formed on the bottom surface and through holes and screw holes formed at both ends, and a threaded portion that can be inserted into the screw hole from the through hole and screwed into the screw hole at the tip. An openable eyebolt characterized by comprising a formed lock bolt. 底面にネジ軸が形成され且つ両端部のそれぞれに貫通孔が形成された概略U型のアイボルト本体と、前記両貫通孔に挿入自在で且つ先端にネジ部が形成されたロックボルトと、前記ロックボルトの前記ネジ部に螺合するロックナットとから構成されたことを特徴とする開閉式アイボルト。   A generally U-shaped eyebolt body having a screw shaft formed on the bottom surface and through-holes formed at both ends; a lock bolt that can be inserted into both through-holes and has a threaded portion at the tip; and the lock An openable eyebolt comprising a lock nut screwed into the threaded portion of the bolt. ロックボルトの基端に扁平頭部が形成されていることを特徴とする請求項1乃至請求項2のいずれかに記載の開閉式アイボルト。   3. The openable eyebolt according to claim 1, wherein a flat head is formed at a base end of the lock bolt. 前記ネジ軸は前記アイボルト本体において回動自在に固定されていることを特徴とする請求項3に記載の開閉式アイボルト。   4. The openable eyebolt according to claim 3, wherein the screw shaft is rotatably fixed in the eyebolt body.
JP2008214571A 2008-08-22 2008-08-22 Opening/closing type eye bolt Pending JP2010048377A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102923558A (en) * 2012-10-31 2013-02-13 中国航天空气动力技术研究院 Combined airplane lifting lug
CN103982513A (en) * 2014-06-05 2014-08-13 常州市南飞机械有限公司 Multifunctional flower basket bolt convenient to use
CN103982518A (en) * 2014-06-06 2014-08-13 常州德日机械有限公司 Multifunctional u-shaped bolt
KR101480526B1 (en) * 2013-05-28 2015-01-09 성동조선해양(주) Swing test apparatus of rudder for vessel
CN107082359A (en) * 2017-06-28 2017-08-22 南京工业职业技术学院 A kind of aircraft hanging structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102923558A (en) * 2012-10-31 2013-02-13 中国航天空气动力技术研究院 Combined airplane lifting lug
KR101480526B1 (en) * 2013-05-28 2015-01-09 성동조선해양(주) Swing test apparatus of rudder for vessel
CN103982513A (en) * 2014-06-05 2014-08-13 常州市南飞机械有限公司 Multifunctional flower basket bolt convenient to use
CN103982518A (en) * 2014-06-06 2014-08-13 常州德日机械有限公司 Multifunctional u-shaped bolt
CN107082359A (en) * 2017-06-28 2017-08-22 南京工业职业技术学院 A kind of aircraft hanging structure

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