JPH0512476U - Hook retaining device - Google Patents

Hook retaining device

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Publication number
JPH0512476U
JPH0512476U JP5985391U JP5985391U JPH0512476U JP H0512476 U JPH0512476 U JP H0512476U JP 5985391 U JP5985391 U JP 5985391U JP 5985391 U JP5985391 U JP 5985391U JP H0512476 U JPH0512476 U JP H0512476U
Authority
JP
Japan
Prior art keywords
hook
bar
tip
wire
spring
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.)
Pending
Application number
JP5985391U
Other languages
Japanese (ja)
Inventor
健策 河野
富司 加藤
金吾 芥田
清一 鷲塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
JFE Engineering Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JFE Engineering Corp filed Critical JFE Engineering Corp
Priority to JP5985391U priority Critical patent/JPH0512476U/en
Publication of JPH0512476U publication Critical patent/JPH0512476U/en
Pending legal-status Critical Current

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  • Load-Engaging Elements For Cranes (AREA)

Abstract

(57)【要約】 (修正有) 【目的】 フックからワイヤーが自然に外れないように
したフック外れ止め装置において、吊荷に近接すること
なく安全に玉外しができるようにする。 【構成】 フックの軸部と曲がり部の境界近傍内側にフ
ックの軸線方向に回動可能に軸支された外れ止めバー3
と、一端をフック曲がり部内側に他端を前記外れ止めバ
ーの中間に固着され、外れ止めバーの先端をフック曲が
り部先端内側に押し付けているバネ4とからなるフック
外れ止め装置において、前記外れ止めバーの先端にバネ
の弾発力よりも大きな吸着力を有する磁石5を取り付け
たことを特徴とするフック外れ止め装置。
(57) [Summary] (Correction) [Purpose] In a hook disengagement prevention device that prevents the wire from coming off from the hook naturally, enable safe ball removal without approaching a suspended load. [Structure] An anti-separation bar 3 pivotally supported inward in the vicinity of a boundary between a hook shaft and a bent portion so as to be rotatable in the hook axial direction.
And a spring 4 which has one end fixed to the inside of the hook bending portion and the other end fixed to the middle of the retaining bar, and the tip of the retaining bar is pressed against the inside of the hook bending portion tip. A hook disengagement prevention device, wherein a magnet 5 having an attraction force larger than the elastic force of a spring is attached to the tip of the stop bar.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

この考案は、クレーン等のフックに吊荷搬送のためのワイヤーの係合部を掛け たり外したりする玉掛け、玉外し作業において、予期しないときにワイヤーの係 合部がフックから外れるのを防止するフック外れ止め装置に関する。 This invention prevents the wire engagement part from coming off from the hook unexpectedly during slinging or unscrewing work in which the wire engagement part for hanging load transportation is hung on or removed from the hook of a crane or the like. The present invention relates to a hook retaining device.

【0002】[0002]

【従来の技術】[Prior Art]

例えば、鋼管のような長尺材を複数本まとめてクレーンで搬送する場合には、 鋼管の長手方向中心から均等の距離においた2本のワイヤーを鋼管に掛け回し、 それぞれのワイヤーの両端に設けた眼鏡状の係合部をクレーンのフックに掛ける 。そして、フックを巻き上げて鋼管を宙吊りにし、所定の場所まで搬送する。ク レーンが所定の場所に到達すると、フックを巻き下げて鋼管を下げ降ろし着地さ せ、フックからワイヤーの係合部を外すというような一連の作業を行なう。 For example, when transporting multiple long materials such as steel pipes together by a crane, hang two wires at equal distances from the longitudinal center of the steel pipe around the steel pipe and install them at both ends of each wire. Hook the eyeglass-shaped engaging part on the hook of the crane. Then, the hook is rolled up to suspend the steel pipe in the air, and the steel pipe is conveyed to a predetermined place. When the crane reaches a predetermined place, the hook is rolled down, the steel pipe is lowered and landed, and the wire engagement part is disengaged from the hook.

【0003】 ワイヤーを鋼管に掛け回し、ワイヤーの係合部をクレーンのフックに掛ける、 いわゆる玉掛け作業中に、フックを巻き上げながらワイヤーを張らせようとして いるとき、ワイヤーの係合部がクレーンのフックにきちんと掛かっていないと、 ワイヤーがフックから外れて荷くずれが起こることがある。また、フックを巻き 下げて荷を下げ降ろし着地させ、フックからワイヤーの係合部を外す際にも、ワ イヤーが弛んだために、ワイヤーの係合部がフックから自然に外れて、荷くずれ が起こることがある。When the wire is hung around a steel pipe and the engaging portion of the wire is hung on the hook of the crane, that is, when the wire is stretched while winding the hook during so-called slinging work, the engaging portion of the wire is the hook of the crane. If not properly hooked, the wire may come off the hook and jam. Also, when the hook is unwound to lower the load to land, and the wire engagement part is disengaged from the hook, the wire slackens and the wire engagement part naturally disengages from the hook, causing the load to collapse. May occur.

【0004】 ワイヤーの係合部がフックから予期しないときに外れて、荷くずれが起こると 重大な人身災害となる恐れがあるので、従来から種々ワイヤーの係合部がフック から自然に外れないような工夫が施されてきた。そのいくつかを示すと次のとお りである。Since the engaging portion of the wire may unexpectedly come off from the hook and a load collapse may cause a serious personal injury, it is necessary to prevent the engaging portion of various wires from naturally coming off the hook. It has been devised. Some of them are as follows.

【0005】 (1)バネ方式 図5に示すように、フックの軸部21と曲がり部22の境界近傍内側にフック の軸線方向に回動可能に軸支された外れ止めバー23と、一端をフック曲がり部 22内部に他端を前記外れ止めバー23の先端に固着され、外れ止めバー23の 先端23aをフック曲がり部22先端22a内側に押し付けているバネ24とか らなるフック外れ止め装置である。このフック外れ止め装置の場合、玉掛け時ま たは玉外し時には、外れ止めバー23を押した状態でワイヤーの掛け外しを行な う。(1) Spring Method As shown in FIG. 5, a retaining bar 23 rotatably supported inward in the vicinity of the boundary between the shaft portion 21 and the bent portion 22 of the hook so as to be rotatable in the axial direction of the hook, and one end thereof. This is a hook disengagement prevention device comprising a spring 24 having the other end fixed inside the hook bend part 22 and the tip 23a of the disengagement stop bar 23 being pressed against the inside of the hook bend part 22 end 22a. .. In the case of this hook disengagement prevention device, the wire is disengaged at the time of slinging or unscrewing while pressing the disengagement prevention bar 23.

【0006】 (2)レバー方式 図6に示すように、フックの軸部21と曲がり部22の境界近傍内側にフック の軸線方向に回動可能に軸支された外れ止めバー31と、外れ止めバー31と一 体となって回転し、その自重により外れ止めバー31の先端31aをフック曲が り部22先端22a内側に押し付けている回転レバー32とから構成されている フック外れ止め装置である。このフック外れ止め装置の場合、玉掛け時または玉 外し時には、回転レバー32上方に回転させてワイヤーの掛け外しを行なう。(2) Lever Method As shown in FIG. 6, a retaining bar 31 rotatably supported inward near the boundary between the shaft portion 21 and the bending portion 22 of the hook so as to be rotatable in the axial direction of the hook, and a retaining stopper. It is a hook disengagement prevention device that rotates together with the bar 31 and is composed of a rotation lever 32 that presses the tip 31a of the disengagement prevention bar 31 to the inside of the hook bent portion 22 tip 22a by its own weight. .. In the case of this hook disengagement prevention device, at the time of slinging or unscrewing, the wire is slid off by rotating the rotary lever 32 upward.

【0007】 (3)引きひも方式 図7に示すように、フックの軸部21と曲がり部22の境界近傍内側にフック の軸線方向に回動可能に軸支された外れ止めバー41と、一端をフック曲がり部 22内部に他端を前記外れ止めバー41の先端に固着され、外れ止めバー41の 先端41aをフック曲がり部22先端22a内側に押し付けているバネ42と、 外れ止めバー41の中間に一端を固着され他端はフックの曲がり部22側面に設 けられた凸部43の貫通孔44を介してフックから垂れ下がるようにした引きひ も45とから構成されるフック外れ止め装置である。すなわち、バネ方式とほと んど同じであるが、ワイヤーの掛け外しは引きひもを下方に引くことで行なう。(3) Pulling String Method As shown in FIG. 7, a retaining bar 41 rotatably supported inward in the vicinity of the boundary between the shaft portion 21 and the bending portion 22 of the hook so as to be rotatable in the axial direction of the hook, and one end thereof. The hook 42 is fixed to the inside of the hook bending part 22 and the other end is fixed to the tip of the retaining bar 41, and the tip 41a of the retaining bar 41 is pressed between the spring 42 and the tip 22a of the hook bending part 22. One end is fixed to the hook and the other end is a hook disengagement device composed of a pulling string 45 that hangs down from the hook through a through hole 44 of a convex portion 43 provided on the side surface of the bent portion 22 of the hook. .. In other words, it is almost the same as the spring method, but the wire is undocked by pulling the pull cord downward.

【0008】[0008]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかしながら、従来のフック外れ止め装置においては、玉掛け時には外れ止め バーをワイヤーの係合部で押しながらフックに掛けるだけなので問題はないが、 玉外し時には外れ止めバーや回転レバーを押しながら、または引きひもを引きな がら、同時にワイヤーを外さなければならないので、どうしても吊荷に接近して 手を使って作業せざるをえず、特に大きな吊荷の場合には吊荷に体をもたれかか るようにして作業をしなければならず、安全上の問題点があった。 However, in the conventional hook disengagement prevention device, there is no problem because it only hangs on the hook while pushing the disengagement prevention bar at the wire engagement part when slinging, but when demounting the ball, pushing the disengagement prevention bar or rotation lever, or pulling. Since it is necessary to pull the string and remove the wire at the same time, it is inevitable to approach the suspended load by hand and work with it, and especially in the case of a large suspended load, the suspended load leans against the body. I had to work in this way, which was a safety issue.

【0009】 なお、玉外し時の作業者の安全を護るために、実開昭63−123580号公 報に開示の自動玉外しフック装置があるが、装置が複雑になること、また使用条 件も制約を受けるという問題点がある。In order to protect the safety of the worker when removing the balls, there is an automatic ball removing hook device disclosed in Japanese Utility Model Publication No. 63-123580, but the device is complicated and the usage conditions are different. Also has the problem of being restricted.

【0010】 この考案は、従来技術の上述のような問題点を解消し、玉外し作業が人手によ り安全に行なえるフック外れ止め装置を提供することを目的としている。An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a hook disengagement prevention device which can safely perform ball removing work manually.

【0011】[0011]

【課題を解決するための手段】[Means for Solving the Problems]

この考案に係るフック外れ止め装置は、フックの軸部と曲がり部の境界近傍内 側にフックの軸線方向に回動可能に軸支された外れ止めバーと、一端をフック曲 がり部内側に他端を前記外れ止めバーの中間に固着され、外れ止めバーの先端を フック曲がり部先端内側に押し付けているバネとからなるフック外れ止め装置に おいて、前記外れ止めバーの先端にバネの弾発力よりも大きな吸着力を有する磁 石を取り付けたものである。 The hook retaining device according to the present invention includes a retaining bar rotatably supported inward in the vicinity of a boundary between a shaft portion and a bending portion of the hook so as to be rotatable in the axial direction of the hook, and has one end inside the bending portion of the hook. A spring is attached to the tip of the retaining bar in a hook retaining device consisting of a spring whose end is fixed in the middle of the retaining bar, and the tip of the retaining bar is pressed against the inside of the hook bent portion. It has a magnet attached to it, which has a larger attractive force than the force.

【0012】[0012]

【作用】[Action]

この考案に係るフック外れ止め装置は、フックの軸部と曲がり部の境界近傍内 側にフックの軸線方向に回動可能に軸支された外れ止めバーと、一端をフック曲 がり部内側に他端を前記外れ止めバーの中間に固着され、外れ止めバーの先端を フック曲がり部先端内側に押し付けているバネとからなるフック外れ止め装置に おいて、前記外れ止めバーの先端にバネの弾発力よりも大きな吸着力を有する磁 石を取り付けている。 The hook retaining device according to the present invention includes a retaining bar rotatably supported inward in the vicinity of a boundary between a shaft portion and a bending portion of the hook so as to be rotatable in the axial direction of the hook, and has one end inside the bending portion of the hook. A spring is attached to the tip of the retaining bar in a hook retaining device consisting of a spring whose end is fixed in the middle of the retaining bar, and the tip of the retaining bar is pressed against the inside of the hook bent portion. A magnet is attached that has a larger attractive force than the force.

【0013】 このような構成において、外れ止めバーの先端は、通常時にはバネによりフッ ク曲がり部先端内側に押し付けられ、さらに外れ止めバーの先端に設けた磁石の 磁力により、フックに吸着している。In such a configuration, the tip of the retaining bar is normally pressed against the inside of the tip of the bent portion by a spring, and is attracted to the hook by the magnetic force of the magnet provided at the tip of the retaining bar. ..

【0014】 玉掛け時には、ワイヤーの係合部を外れ止めバーに押し付け、外れ止めバーを 磁石の磁力に打ち勝つ力で押し、外れ止めバーをフックから離して、ワイヤーの 係合部をフックに掛ける。ワイヤーの係合部が完全にフックに掛かった時点では 、ワイヤーの係合部は外れ止めバーから離れるので、外れ止めバーはバネの力で もとに戻され、先端の磁石がフックに吸着する。したがって、一度フックに掛け たワイヤーが外れることはない。At the time of slinging, the engaging portion of the wire is pressed against the retaining bar, the retaining bar is pushed by a force that overcomes the magnetic force of the magnet, the retaining bar is separated from the hook, and the engaging portion of the wire is hooked on the hook. When the wire engaging part is completely hooked, the wire engaging part separates from the retaining bar, so the retaining bar is returned by the force of the spring, and the magnet at the tip is attracted to the hook. .. Therefore, the wire once hooked will not come off.

【0015】 なお、外れ止めバーの先端に磁石を設けてフックに吸着させるようにしている ので、バネの弾発力は従来のものよりも小さくすることができ、磁石がフックか ら離れた後は小さい力で外れ止めバーを押すことが可能であり、必ずしもワイヤ ーを手でもってフックに掛ける必要はない。In addition, since the magnet is provided at the tip of the retaining bar so that it can be attracted to the hook, the elastic force of the spring can be made smaller than that of the conventional one, and after the magnet is separated from the hook. Can push the detent bar with a small amount of force and does not necessarily have to hold the wire by hand to hook it.

【0016】 玉外し時には、外れ止めバーを磁石の磁力に打ち勝つ力で押し、外れ止めバー をフックから離すとともに、バネの弾発力に逆らってバネを押し込み、外れ止め バーの先端の磁石を、当初磁石が吸着していたフック曲がり部先端内側とは反対 側のフック曲がり部内側に吸着させる。そして、この状態でワイヤーをフックか ら外す。ワイヤーを外した後、磁石をフックの吸着部から引き離し、バネの弾発 力で再びフック曲がり部先端内側に押し付け、磁石を吸着させる。この作業も前 記理由により、外れ止めバーを手で持って外す必要はない。したがって、玉外し 時に外れ止めバーを手で押さえつける必要がないので、玉外し作業が安全にでき る。When removing the balls, push the retaining bar with a force that overcomes the magnetic force of the magnet, separate the retaining bar from the hook, and push the spring against the elastic force of the spring to push the magnet at the tip of the retaining bar. The magnet is initially attracted to the inside of the hook bend, which is opposite to the inside of the tip of the hook bend. Then, in this state, remove the wire from the hook. After removing the wire, pull the magnet away from the adsorption part of the hook and press it again inside the bent part of the hook with the elastic force of the spring to adsorb the magnet. For this reason, it is not necessary to remove the retaining bar by hand for this reason. Therefore, it is not necessary to press the retaining bar with your hand when removing the balls, so you can safely remove the balls.

【0017】[0017]

【実施例】【Example】

本発明の1実施例のフック外れ止め装置を図1により説明する。本発明の1実 施例のフック外れ止め装置は、フックの軸部21と曲がり部22の境界近傍内側 に設けた凸設部1に設けたピン2にフックの軸線方向に回動可能に軸支された外 れ止めバー3と、一端をフック曲がり部内側に他端を前記外れ止めバー3の中間 に固着され、外れ止めバー3の先端をフック曲がり部先端内側22aに押し付け ているバネ4と,外れ止めバー3の先端にバネ4の弾発力よりも大きな吸着力を 有する磁石5を取り付けたものである。 A hook disengagement prevention device according to an embodiment of the present invention will be described with reference to FIG. A hook disengagement prevention device according to one embodiment of the present invention includes a pin 2 provided on a protruding portion 1 provided inside a boundary between a shaft portion 21 and a bent portion 22 of the hook so as to be rotatable in the axial direction of the hook. The stopper bar 3 supported by the spring 4 is fixed to the inside of the hook bending portion at one end, and the middle end of the stopper bar 3 at the other end, and the spring 4 pressing the tip of the stopper bar 3 to the inside 22a of the tip portion of the hook bending portion. Then, a magnet 5 having an attractive force larger than the elastic force of the spring 4 is attached to the tip of the retaining bar 3.

【0018】 図2はこのフック外れ止め装置を使用して玉掛けを行なっている状態を示す説 明図である。先端が二股になったワイヤー係合バー6の二股部6aにワイヤー5 1の眼鏡状係合部51aを引っ掛け、ワイヤー係合バー6で外れ止めバー3を押 し込みながら、ワイヤー51の係合部51aをフックの曲がり部22に掛ける。 ワイヤー51の係合部51aをフックの曲がり部22に掛けると、外れ止めバー 3を押すものがなくなるので、外れ止めバー3はバネ4の弾発力により、その先 端が再びフック曲がり部先端内側22aに押し付けられ、磁石5はフックに吸着 する。FIG. 2 is an explanatory view showing a state where slinging is performed by using this hook detachment prevention device. Engage the wire 51 while hooking the spectacle-shaped engaging portion 51a of the wire 51 on the bifurcated portion 6a of the wire engaging bar 6 having a bifurcated tip and pressing the retaining bar 3 with the wire engaging bar 6. The part 51a is hung on the bent part 22 of the hook. When the engaging portion 51a of the wire 51 is hung on the bent portion 22 of the hook, there is nothing to push the retaining bar 3, so that the retaining bar 3 has its tip end re-hooked by the elastic force of the spring 4. The magnet 5 is pressed against the inner side 22a and attracted to the hook.

【0019】 図3はフック外れ止め装置の外れ止めバー3を外して、玉外しを行なっている 状態を示す説明図である。前記ワイヤー係合バー6で外れ止めバー3を押してフ ックから外し、さらにバネ4の弾発力に逆らって押し進み、磁石5を当初磁石が 吸着していたフック曲がり部先端内側22aとは反対側のフック曲がり部内側2 2bに吸着させる。そして、ワイヤー係合バー6の二股部6aにワイヤー51の 眼鏡状係合部51aを引っ掛け、ワイヤー51をフックから外す。FIG. 3 is an explanatory view showing a state where the removal stopper bar 3 of the hook stopper device is removed to perform ball removal. The wire engagement bar 6 pushes the retaining bar 3 to release it from the hook, and further pushes against the elastic force of the spring 4 to move the magnet 5 to the inner side 22a of the hook bent portion where the magnet was initially attracted. It is adsorbed to the inside 22b of the bent portion of the hook on the opposite side. Then, the spectacle-shaped engaging portion 51a of the wire 51 is hooked on the forked portion 6a of the wire engaging bar 6, and the wire 51 is removed from the hook.

【0020】 図4は玉外し作業中にフック曲がり部内側22bに吸着させていた外れ止めバ ー3の磁石5を外す方法を示す説明図であるが、前記ワイヤー係合バー6の二股 部6aを使用して外すようにしている。FIG. 4 is an explanatory view showing a method of removing the magnet 5 of the retaining bar 3 which has been attracted to the inside 22b of the bent portion of the hook during the ball removing operation. The forked portion 6a of the wire engaging bar 6 is shown in FIG. I am trying to remove it using.

【0021】 磁石5の吸着力は、1例では700gf程度のものを使用している。また、バ ネの弾発力は、外れ止めバー3の重量や磁石5の吸着力によって異なるが、バネ 4の弾発力で外れ止めバー3がフック曲がり部先端内側22a押し付けられる範 囲で、できるだけ小さくした方がよく、1例では100gfとした。The magnet 5 has an attraction force of about 700 gf in one example. Further, the elastic force of the vane varies depending on the weight of the retaining bar 3 and the attractive force of the magnet 5, but within a range in which the retaining force of the spring 4 presses the retaining bar 3 on the inside 22a of the tip of the bent portion of the hook. It is better to make it as small as possible, and in one example, it was 100 gf.

【0022】[0022]

【考案の効果】[Effect of the device]

この考案により、玉外し作業が安全に行なえる。 With this device, the ball removing work can be performed safely.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の1実施例のフック外れ止め装置を示す
説明図である。
FIG. 1 is an explanatory view showing a hook disengagement prevention device according to one embodiment of the present invention.

【図2】本発明の1実施例のフック外れ止め装置を使用
して玉掛けを行なっている状態を示す説明図である。
FIG. 2 is an explanatory view showing a state where slinging is performed by using the hook detachment prevention device of one embodiment of the present invention.

【図3】本発明の1実施例のフック外れ止め装置の外れ
止めバーを外して、玉外しを行なっている状態を示す説
明図である。
FIG. 3 is an explanatory view showing a state where a ball is removed by removing a retaining bar of a hook retaining device according to an embodiment of the present invention.

【図4】玉外し作業中にフック曲がり部内側に吸着させ
ていた外れ止めバー3磁石を外す方法を示す説明図であ
る。
FIG. 4 is an explanatory diagram showing a method of removing the retaining bar 3 magnet that has been attracted to the inside of the bent portion of the hook during the ball removing operation.

【図5】第一の従来のフック外れ止め装置を示す説明図
である。
FIG. 5 is an explanatory view showing a first conventional hook detachment prevention device.

【図6】第二の従来のフック外れ止め装置を示す説明図
である。
FIG. 6 is an explanatory view showing a second conventional hook detachment prevention device.

【図7】第三の従来のフック外れ止め装置を示す説明図
である。
FIG. 7 is an explanatory view showing a third conventional hook detachment prevention device.

【符号の説明】[Explanation of symbols]

1 フックに設けた凸設部 2 凸設部に設けたピン 3 外れ止めバー 4 バネ 5 磁石 1 Convex portion provided on the hook 2 Pin provided on the convex portion 3 Lock bar 4 Spring 5 Magnet

───────────────────────────────────────────────────── フロントページの続き (72)考案者 鷲塚 清一 東京都千代田区丸の内1丁目1番2号 日 本鋼管株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Seiichi Washizuka 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 フックの軸部と曲がり部の境界近傍内側
にフックの軸線方向に回動可能に軸支された外れ止めバ
ーと、一端をフック曲がり部内側に他端を前記外れ止め
バーの中間に固着され、外れ止めバーの先端をフック曲
がり部先端内側に押し付けているバネとからなるフック
外れ止め装置において、前記外れ止めバーの先端にバネ
の弾発力よりも大きな吸着力を有する磁石を取り付けた
ことを特徴とするフック外れ止め装置。
1. A retainer bar rotatably supported inward in the vicinity of a boundary between a hook shaft and a bend so as to be rotatable in the axial direction of the hook, and one end of the retainer bar and the other end of the retainer bar. In a hook slip-off prevention device comprising a spring fixed in the middle and pressing the tip of the slip-out prevention bar toward the inside of the hook bent portion, a magnet having an attraction force larger than the elastic force of the spring at the tip of the slip-off prevention bar. A hook disengagement prevention device characterized by having attached.
JP5985391U 1991-07-30 1991-07-30 Hook retaining device Pending JPH0512476U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5985391U JPH0512476U (en) 1991-07-30 1991-07-30 Hook retaining device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5985391U JPH0512476U (en) 1991-07-30 1991-07-30 Hook retaining device

Publications (1)

Publication Number Publication Date
JPH0512476U true JPH0512476U (en) 1993-02-19

Family

ID=13125170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5985391U Pending JPH0512476U (en) 1991-07-30 1991-07-30 Hook retaining device

Country Status (1)

Country Link
JP (1) JPH0512476U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108525154A (en) * 2018-05-31 2018-09-14 国家电网公司 Vertical ladder climbing protector
CN111265045A (en) * 2020-04-16 2020-06-12 赵建勋 Multifunctional furniture capable of changing shape function through folding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108525154A (en) * 2018-05-31 2018-09-14 国家电网公司 Vertical ladder climbing protector
CN111265045A (en) * 2020-04-16 2020-06-12 赵建勋 Multifunctional furniture capable of changing shape function through folding

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