JP2006264953A - Cargo handling hook - Google Patents

Cargo handling hook Download PDF

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JP2006264953A
JP2006264953A JP2005088405A JP2005088405A JP2006264953A JP 2006264953 A JP2006264953 A JP 2006264953A JP 2005088405 A JP2005088405 A JP 2005088405A JP 2005088405 A JP2005088405 A JP 2005088405A JP 2006264953 A JP2006264953 A JP 2006264953A
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hook
lever
tip
cargo handling
wire
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Toshifumi Sakamoto
敏史 坂本
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Taiyo Seiki Iron Works Co Ltd
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Taiyo Seiki Iron Works Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cargo handling hook of a structure capable of eliminating inconvenience such as causing a hooking on a peripheral rope, a structure, or the like by preventing slipping-out of a wire, even if a slinging work wire rises in no-load. <P>SOLUTION: In this cargo handling hook 10, an eye ring 12 is connected to a neck part 11h with one end of a hook body 11a having a U-shaped hook part in a tip part as a hook part 11b and the rear end as the neck part 11h. A lever 13 is rotatably installed on one side support piece 14 of the neck part. A spring 15 for applying outward elastic force is arranged on this lever. A swelling part 16 slantingly swelling from the base end to its outside surface side is formed on the lever 13. The swelling part 16 prevents the slipping-out of the slinging work wire 7 by making its end substantially coincide with the outside end of the hook part, so as not to hitch on the peripheral rope. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、荷物の吊上げ、卸しなどの荷役作業に用いられる荷役用フックに関する。   The present invention relates to a cargo handling hook used for cargo handling work such as lifting and wholesale of luggage.

この種の荷役用フック1は、図5に示すように、片つり形のフックが一般的に用いられる(大容量の場合両つり形のフックが用いられることもある)。この荷役用フック1は、一例としてU字形の鉤部を先端部に有するフック本体1aから成り、その後端部の首部1hに、図示の例ではアイリング2が一体に形成され、首部1hとフック鉤部1bとの間には開口wが形成され、フック鉤部1bはその基部位置から少し外側へ反り出るように形成されている。又、首部1hとフック鉤部1bの間にはレバー3が、フック本体1aの首部1hの側方に設けた支持片4に軸3xを介して連結され、鉤部の開口wを内側から開閉するように揺動可能に取付けられている。   As shown in FIG. 5, this type of cargo handling hook 1 is generally a single-hanging hook (a double-hanging hook may be used for a large capacity). The cargo handling hook 1 includes, as an example, a hook body 1a having a U-shaped collar at the tip, and an eye ring 2 is integrally formed on the neck 1h at the rear end in the illustrated example. An opening w is formed between the hook part 1b and the hook hook part 1b is formed so as to warp outward slightly from the base position. A lever 3 is connected between the neck 1h and the hook collar 1b via a shaft 3x to a support piece 4 provided on the side of the neck 1h of the hook body 1a, and opens and closes the opening w of the collar from the inside. It is attached so that it can swing.

レバー3は、吊り下げられる玉掛けワイヤ7が不用意に外れるのを防止するためのものである。この外れ止めのレバー3は、レバー先端3sがフック鉤部の先端部内側に当接するように閉鎖方向に向けて付勢するばね5の弾性力により外方へ押され、開口wを閉じるようになっている。フック本体1aの内側は中心Oを中心とする所定寸法aの円形に形成され、外側も略円弧状である。   The lever 3 is for preventing the slung wire 7 to be suspended from being inadvertently disconnected. The release preventing lever 3 is pushed outward by the elastic force of the spring 5 urging in the closing direction so that the lever tip 3s abuts the inside of the tip of the hook collar, so as to close the opening w. It has become. The inside of the hook body 1a is formed in a circular shape having a predetermined dimension a centered on the center O, and the outside is also substantially arc-shaped.

アイリング2の上方には吊上ワイヤ(又は吊金具)6が連結され、荷物を吊り上げる際には、例えば玉掛けワイヤ7がフック鉤部1bに掛けられると、レバー3を2点鎖線で示す方向に押してフック本体1aの吊位置(中央)まで挿通され、玉掛けワイヤ7の下方の金具8より下に連結されている荷物を吊上げできる状態となる。荷物が垂直に吊下げられている静的な状態では吊上ワイヤ6に玉掛けワイヤ7の中心線が一致する。なお、図示の例では首部1hの上方にはアイリング2を設けているが、アイリングに代えて吊りロッド(軸)が一体に設けられる場合もある。   A lifting wire (or hanging bracket) 6 is connected above the eye ring 2, and when lifting a load, for example, when the sling wire 7 is hung on the hook collar 1 b, the lever 3 is indicated by a two-dot chain line. Is pushed to the suspension position (center) of the hook body 1a, and the load connected below the metal fitting 8 below the sling wire 7 can be lifted. In a static state where the load is suspended vertically, the center line of the sling wire 7 coincides with the lifting wire 6. In the illustrated example, the eye ring 2 is provided above the neck 1h. However, a suspension rod (shaft) may be provided integrally instead of the eye ring.

ところで、上記従来の荷役用フックを使用する際、特に無負荷状態では、図6の(a)図に示すように、下方の玉掛けワイヤ7が図中の二点鎖線で示す位置まで立ち上がり、少しねじれてレバー3に引掛かり、玉掛けワイヤ7が少し下がると、レバー3を内側へ押し始める。そして(b)図のように、レバー3に下方向の力が掛ったままフック1を吊上げると玉掛けワイヤ7がレバー3の先端3sとフック鉤部1bとの間を通りフック1から外れ始める。この状態でフック1を吊り上げると、(c)図のように、完全にフック1から玉掛けワイヤ7が外れてしまう。このように、従来のフック1のレバー3の取付構造は玉掛けワイヤ7が外れ易いという点で改善すべき問題が残されている。   By the way, when using the conventional cargo handling hook, particularly in the unloaded state, as shown in FIG. 6A, the lower sling wire 7 rises to the position indicated by the two-dot chain line in the figure, When it is twisted and hooked on the lever 3 and the sling wire 7 is slightly lowered, the lever 3 starts to be pushed inward. Then, as shown in FIG. 4B, when the hook 1 is lifted with the downward force applied to the lever 3, the sling wire 7 passes between the tip 3s of the lever 3 and the hook collar 1b and starts to come off from the hook 1. . When the hook 1 is lifted in this state, the sling wire 7 is completely detached from the hook 1 as shown in FIG. Thus, the conventional mounting structure of the lever 3 of the hook 1 still has a problem to be improved in that the sling wire 7 is easily detached.

又、フックには、図5に示すように、荷重Qの垂直方向に対して角度αの方向に荷重Q’が作用することもあり、垂直下方や斜め下方に繰り返し荷重が作用すると、フック鉤部1bが少しずつ口を開くこととなる。そこで、開口wの寸法の変化を知るため、一般には目印9〜9間の寸法w’をノギスでその都度測定し、寸法w’の変化により使用限度を判断している。寸法w’が一定以上に大きくなるとレバー3の先端がフック鉤部1bから外方へ外れる前に、フックが使用限度を越えて破断することがあるからである。   Further, as shown in FIG. 5, the load Q ′ may act on the hook in the direction of the angle α with respect to the vertical direction of the load Q. The part 1b will open its mouth little by little. Therefore, in order to know the change in the dimension of the opening w, generally, the dimension w 'between the marks 9 to 9 is measured with a caliper each time, and the use limit is determined by the change in the dimension w'. This is because if the dimension w 'becomes larger than a certain value, the hook may break beyond the use limit before the tip of the lever 3 is disengaged outward from the hook flange 1b.

しかし、このような使用限度に達しているかはその直前まで仲々判断することが困難である。又、フック鉤部1bが垂れ下がるにつれて他のロープ、構造物、作業者の衣服等に引掛かり易くなり、事故を起す可能性もあり、この種の問題をも考慮して外れ止めのレバー3の取付構造について対策を施すことが望ましい。   However, it is difficult to determine whether or not the usage limit has been reached. Also, as the hook collar 1b hangs down, it becomes easy to get caught on other ropes, structures, workers' clothes, etc., which may cause an accident. It is desirable to take measures for the mounting structure.

この発明は、上記の問題に留意して、無負荷時に玉掛けワイヤの立上りがあってもこのワイヤが外れることを防止し、かつ周囲のロープ、構造物等への引掛かりが生じるような不都合を解消し得る構造の荷役用フックを提供することを課題とする。又、上記の荷役用フックにおいて外れ止めのレバーを使用限度で外れるようにしてフック本体の使用限度を知ることができるようにすることをもう1つの課題とするものである。   In consideration of the above problems, the present invention prevents the wire from coming off even when the slinging wire rises at no load, and causes the inconvenience of being caught on the surrounding ropes and structures. It is an object of the present invention to provide a cargo handling hook having a structure that can be eliminated. It is another object of the present invention to make it possible to know the usage limit of the hook body by disengaging the locking lever in the cargo handling hook as described above.

この発明は、上記の課題を解決する手段として、U字形の鉤部を先端部に有するフック本体と、そのフック本体の後端部に連結されて鉤部の開口を内側から開閉する揺動可能なレバーと、そのレバーの先端が鉤部の先端部内側に当接する閉鎖方向に向けてレバーを付勢する弾性部材とから成る荷役用フックにおいて、上記レバーの外面にレバー長さ方向に延びて先端面が鉤部の先端部内面に対向する膨出部を設け、その膨出部のレバー先端側の高さをレバーの閉鎖状態で鉤部の先端に略一致させたことを特徴とする荷役用フックとしたのである。   As a means for solving the above-mentioned problems, the present invention is a hook body having a U-shaped collar at its tip, and swingable connected to the rear end of the hook body to open and close the opening of the collar from the inside. In a cargo handling hook comprising an elastic lever and an elastic member that biases the lever toward the closing direction in which the tip of the lever contacts the inside of the tip of the collar, the lever extends in the lever length direction on the outer surface of the lever. Cargo handling characterized in that a bulging portion whose tip surface is opposed to the inner surface of the heel portion of the buttock and that the height of the bulging portion on the lever tip side substantially matches the tip of the buttock when the lever is closed. It was a hook for use.

上記の構成としたこの発明の荷役用フックは、吊上ワイヤによりフック本体上部の連結部を介してフック本体を吊り、この状態で玉掛けワイヤを通して荷重を吊り上げることができる点は従来の荷役用フックと同様である。しかし、この発明の荷役用フックによれば荷重を卸して無負荷となった際に、外れ止めのレバーに設けた膨出部によってフック本体の先端部から玉掛けワイヤが外れることが防止される。無負荷時に玉掛けワイヤが立上がると共に少し捩れながらワイヤが上昇し、その後玉掛けワイヤが外れ止めのレバーに当りながら再び下ることがある。   The cargo handling hook of the present invention having the above-described configuration is the conventional cargo handling hook in that the hook body is suspended by the lifting wire via the connecting portion at the upper part of the hook body, and the load can be lifted through the sling wire in this state. It is the same. However, according to the cargo handling hook of the present invention, when the load is unloaded and no load is applied, it is prevented that the sling wire is detached from the tip end portion of the hook body by the bulging portion provided in the lever for preventing the detachment. When no load is applied, the sling wire rises and the wire rises while being twisted slightly, and then the sling wire falls again while hitting the locking lever.

このとき、レバーの外面にはレバー長さ方向に延び先端面が鉤部の先端部内面に対向するまで延びる膨出部が形成されており、その膨出部のレバー先端側高さがレバーの閉鎖状態で鉤部の先端に略一致する位置まで延びているため、玉掛けワイヤが下がるとワイヤはレバーの膨出部からフック本体部の側面に沿って下降し、元の下方位置へ戻る。このため、玉掛けワイヤがフック本体から外れるのが防止される。又、外れ止めレバーの膨出部が上記のように延びて形成されているため、荷役用フックを吊上げる際に周囲のロープ、構造物、衣服等に引掛かることも阻止される。   At this time, a bulging portion is formed on the outer surface of the lever so as to extend in the lever length direction until the tip surface faces the inner surface of the tip portion of the flange portion. Since it extends to a position that substantially coincides with the tip of the collar in the closed state, when the slinging wire is lowered, the wire descends from the bulging portion of the lever along the side surface of the hook main body and returns to the original lower position. For this reason, the slinging wire is prevented from coming off from the hook body. Further, since the bulging portion of the detachment prevention lever is formed to extend as described above, it is prevented from being caught by the surrounding rope, structure, clothes, etc. when lifting the cargo handling hook.

上記構成の荷役用フックに対し、鉤部の先端部内面にレバー先端部を係止してレバーを閉鎖状態に保持する切欠部を設け、その切欠部に対するレバーの係止長さを鉤部が使用限度に至る変形によってレバーの係止が解除される長さに設定し、レバーが切欠部から外れることにより使用限度、即ちフックの寿命を知ることができる。即ち、このような荷役用フックを使用すると、荷役用フックには荷重を吊上げる度に荷重が作用し、フックの先端部は少しずつ元の形状から開くこととなる。   For the cargo handling hook having the above-described structure, a notch portion is provided on the inner surface of the tip end portion of the collar portion to lock the lever tip portion and hold the lever in a closed state. The length is set such that the lever is unlocked by deformation reaching the use limit, and the use limit, that is, the life of the hook can be known by releasing the lever from the notch. That is, when such a cargo handling hook is used, the load is applied to the cargo handling hook every time the load is lifted, and the tip of the hook is gradually opened from the original shape.

レバーの先端がレバーの係止長さを越えレバー先端がフック先端部から外れて、弾性部材により外方へ押し出される。これは、フック本体が使用限度を越えて広がったためである。従って、レバーがフック先端部から外れることにより使用限度を知ることができ、使用前にその都度フック先端部の広がりの程度を測定する必要がなくなる。   The tip of the lever exceeds the locking length of the lever, the tip of the lever is detached from the tip of the hook, and is pushed outward by the elastic member. This is because the hook body has spread beyond the limit of use. Therefore, the use limit can be known when the lever is detached from the hook tip, and it is not necessary to measure the extent of the hook tip before each use.

この発明の荷役用フックは、フック本体部の鉤部の開口を閉じるレバーの外面に膨出部を設け、このレバーの膨出部のレバー先端側高さをレバーの閉鎖状態で鉤部の先端に略一致するようにレバーを設けたから、無負荷時に玉掛けワイヤが立上がった際にフック先端部から外れることが防止され、かつ吊上げ時にフック先端部が周囲のロープ等に引掛かる不都合が防止できる。   The cargo handling hook of the present invention is provided with a bulging portion on the outer surface of the lever that closes the opening of the hook portion of the hook main body portion, and the height of the lever tip side of the bulging portion of the lever is set to the tip of the hook portion when the lever is closed. Since the lever is provided so as to substantially coincide with the hook, the hooking wire is prevented from coming off from the hook tip when it rises when no load is applied, and the inconvenience that the hook tip is hooked on the surrounding rope or the like when lifting is prevented. .

又、上記荷役用フックにおいて、フック先端部に切欠部を設け、切欠部の係止長さを使用限度に設定した第2の発明では、外れ止めのレバーがフック先端部から外れることにより、使用限度を知ることができるという利点が得られる。   Further, in the above-mentioned cargo handling hook, in the second invention in which a notch is provided at the tip of the hook, and the locking length of the notch is set to the use limit, the lever for releasing is used by being released from the tip of the hook. The advantage of knowing the limit is obtained.

以下、この発明の実施の形態について図面を参照して説明する。図1は実施形態の荷役用フックの全体構成を示す正面図である。図示の荷役用フック10は、従来例のフックと同様に、外観形状がU字形の鉤部を先端部に有するフック本体11aから成り、フック本体の最先端はフック鉤部11b、後端部は首部11hとし、この首部11hには吊上ワイヤ6用の連結部材としてアイリング12がフック本体11aと一体に形成されている。鉤部には開口wが形成されている。但し、吊上ワイヤ6、玉掛けワイヤ7は従来例と同様に連結又は係合されるものとして同一符号を付して表示している。   Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an overall configuration of a cargo handling hook according to an embodiment. The illustrated cargo handling hook 10 is composed of a hook main body 11a having a U-shaped flange portion at the front end portion, like the conventional hook, and the hook body 11b has the hook end portion 11b at the leading end of the hook body and the rear end portion. A neck portion 11h is formed, and an eye ring 12 is integrally formed with the hook body 11a as a connecting member for the lifting wire 6 on the neck portion 11h. An opening w is formed in the collar portion. However, the lifting wire 6 and the sling wire 7 are denoted by the same reference numerals as being connected or engaged as in the conventional example.

後端部の首部11hとフック鉤部間には上記開口wを閉じるレバー13が、鉤部の開口wに臨む一側方に設けた支持片14に鉤部の開口を内側から開閉するように軸13xを中心に揺動可能に取付けられ、このレバー13の先端13sが鉤部の先端部内側に当接する閉鎖方向に向けてレバー13を押し出す方向の弾性力を付与する弾性部材のばね15が軸13xの周りに設けられ、かつこのばね15は首部11hとレバー13の裏面とにその両端を接して取付けられている。レバー13の基部が上記支持片14に取付けられている点は従来例と同じであるが、レバー13の先端13sはフック本体11aのフック鉤部11bに設けた切欠部11cに嵌合して開口wを閉じるように設けられている。   A lever 13 that closes the opening w between the neck portion 11h of the rear end portion and the hook hook portion opens and closes the opening of the hook portion from the inside to the support piece 14 provided on one side facing the opening w of the hook portion. A spring 15 of an elastic member is attached so as to be swingable about the shaft 13x, and applies an elastic force in a direction of pushing the lever 13 toward the closing direction in which the tip 13s of the lever 13 contacts the inside of the tip of the flange. The spring 15 is provided around the shaft 13x and attached to the neck portion 11h and the back surface of the lever 13 with both ends thereof in contact therewith. The point that the base portion of the lever 13 is attached to the support piece 14 is the same as the conventional example, but the tip 13s of the lever 13 is fitted into a notch portion 11c provided in the hook collar portion 11b of the hook body 11a and opened. It is provided to close w.

上記切欠部11cは、フック鉤部11bの開口wに面する反り面に側面視略三角状で平行な二側面11CWを有し、切欠底11CHに対してレバー13の先端13sが遊嵌でき、かつ切欠端11CVに当接してレバー13のそれ以上の外方への動きを止める切込みとして上記反り面に互いに対称な一対としてそれぞれ形成されている。切欠端11CVは、その深さが後述する使用限度まで使用されて切欠端でのレバーの切欠部に対する係止長さより荷重によるフック本体11aの変形が大きくなるとレバー13が外れ、フック本体11aが寿命に達したことを知ることができるように予め所定の深さに形成されている。 The notch 11c has two parallel sides 11 CW in side view a triangular shape cambered surface facing the opening w of the hooks hook 11b, loosely fitted tip 13s of the lever 13 relative to the notch bottom 11 CH A pair of symmetries are formed on the warped surface as a pair of cuts that can come into contact with the notch end 11 CV to stop further outward movement of the lever 13. When the depth of the notch end 11 CV is used up to the use limit described later and the deformation of the hook body 11a due to the load becomes larger than the locking length of the notch end of the lever at the notch end, the lever 13 is released and the hook body 11a It is formed in advance at a predetermined depth so that it can be known that the lifetime has been reached.

レバー13は、図2〜図4に示すように、左右にL字断面の側部材13a、13aが直線上に延び、その両部材間の外面に膨出部16が基部から先端13sへ向ってレバー長さ方向に傾斜状に延びて膨出し、膨出部16のレバー先端側の高さをフック本体11aのフック鉤部11bの先端と略一致するように形成されている。略一致とは、膨出部16の膨出端が、フック鉤部11bの端11E に周囲のロープ、構造物等が引掛るのを阻止し、かつ玉掛けワイヤ7の立上り時の上端が再度下った際にレバー13の膨出部16からフック鉤部11bに沿って下がるように膨出していればよいことを意味する。 As shown in FIGS. 2 to 4, the lever 13 has L-shaped side members 13 a and 13 a extending in a straight line on the left and right, and a bulging portion 16 is formed on the outer surface between the two members from the base toward the tip 13 s. The lever extends in an inclined manner in the length direction of the lever, and is formed so that the height of the bulging portion 16 on the lever tip side substantially coincides with the tip of the hook collar portion 11b of the hook body 11a. The substantially coincidence means that the bulging end of the bulging portion 16 prevents the surrounding rope, structure or the like from being caught on the end 11 E of the hook collar portion 11b, and the upper end of the slinging wire 7 at the time of rising is again This means that it only has to bulge so as to descend from the bulging portion 16 of the lever 13 along the hook flange portion 11b when it is lowered.

即ち、従来例の荷役用フック(図5)のフック鉤部1bの反り面Sとレバー3の外端面との間に形成されている三角状のスペースが生じないように、レバー13の側部材13aと膨出部16によりそのスペースを埋込んで、玉掛けワイヤ7が外れない程度に膨出部16を設ければよい。又、レバー13に対し、首部11hの下方端面に、図1の二点鎖線で示すように、逃し面11dが設けられ、この逃し面11dに沿ってレバー13の内側面が当接する位置までレバー13を逃し可能として、玉掛けワイヤ7をフック10に掛ける際に内側に押された時、膨出部16の突出が玉掛けワイヤ7の挿通を阻害しないようにしている。   That is, the side member of the lever 13 is formed so that the triangular space formed between the warped surface S of the hook collar 1b of the conventional cargo handling hook (FIG. 5) and the outer end surface of the lever 3 does not occur. The space may be embedded by 13a and the bulging portion 16, and the bulging portion 16 may be provided to such an extent that the sling wire 7 does not come off. Further, as shown by a two-dot chain line in FIG. 1, a relief surface 11d is provided on the lower end surface of the neck portion 11h with respect to the lever 13, and the lever 13 is moved to a position where the inner side surface of the lever 13 abuts along the relief surface 11d. 13 can be escaped so that the protrusion of the bulging portion 16 does not obstruct the insertion of the slinging wire 7 when it is pushed inward when the slinging wire 7 is hung on the hook 10.

上記構成の荷役用フック10は、フックに玉掛けワイヤ7などを介して荷物を吊上げるのに用いられることは勿論である。そして、この荷役用フック10によれば、従来例のように、玉掛けワイヤ7が無負荷時に外れることはなく、吊上げ作業時に周囲の構造物に引掛かるなどの不都合も生じない。図1に二点鎖線で示すように、荷役用フック10に荷重が作用しない無負荷時に、玉掛けワイヤ7が立ち上がりながら少し捩れると、ワイヤ7の上半部分がレバー13に干渉する位置となり、再びワイヤ7が下がる際にワイヤ7に横方向の力が作用するとレバー13に接触する。   Needless to say, the cargo handling hook 10 having the above-described configuration is used to lift a load via a sling wire 7 or the like. According to the cargo handling hook 10, unlike the conventional example, the sling wire 7 does not come off when there is no load, and there is no inconvenience such as catching on surrounding structures during lifting work. As shown by a two-dot chain line in FIG. 1, when no load is applied to the cargo handling hook 10, when the sling wire 7 is slightly twisted while standing, the upper half of the wire 7 becomes a position where it interferes with the lever 13, When a lateral force acts on the wire 7 when the wire 7 is lowered again, the lever 7 comes into contact.

このとき、従来のフックでは外れ止めレバーの先端とフック先端部の外方への反り面Sとの間にワイヤ7が嵌り込んでレバー13を押し下げようとするが、この実施形態の荷役用フック10では、レバー13の先端13sはフック鉤部11bの切欠部11cにばね15の弾性力で嵌合、当接し、膨出部16の端はフック鉤部11bの端11E に略一致する状態であるため、ワイヤの上半部分は反り面Sとの間に嵌り込むことができない。従って、ワイヤ7が下がるときは捩れが戻りながら元の最下位置に下がることとなる。このため、玉掛けワイヤ7が荷役用フック10から外れることは防止される。 At this time, in the conventional hook, the wire 7 is fitted between the tip of the locking lever and the outwardly warped surface S of the hook tip, and the lever 13 is pushed down. 10, the tip 13 s of the lever 13 is fitted and brought into contact with the notch 11 c of the hook collar 11 b by the elastic force of the spring 15, and the end of the bulging part 16 substantially coincides with the end 11 E of the hook collar 11 b. Therefore, the upper half portion of the wire cannot be fitted between the warped surface S. Therefore, when the wire 7 is lowered, the twist is returned to the original lowest position. For this reason, it is prevented that the sling wire 7 comes off from the cargo handling hook 10.

又、この実施形態の荷役用フック10では、首部11hとフック鉤部11bとの間に端11E 寄りの位置で膨出部16を有するレバー13を設けたから、負荷時あるいは無負荷時のいずれであれ、荷役用フック10が昇降する際にフック鉤部11bが周囲の他のロープ、構造物あるいは衣服等に引掛かるなどの現象が起らないこととなる。なお、レバー13は、玉掛けワイヤ7が不測の力でフック10から外れるのを防止するために設けられるものである。 Further, the handling hook 10 of this embodiment, since providing the lever 13 with a bulge portion 16 at the position of the end 11 E closer between the neck 11h and the hook hook 11b, one of the load or no-load However, when the cargo handling hook 10 moves up and down, a phenomenon such that the hook collar portion 11b is caught by other surrounding ropes, structures, clothes or the like does not occur. The lever 13 is provided in order to prevent the sling wire 7 from coming off the hook 10 by an unexpected force.

さらに、前述したように、鉤形のフック本体11aは、フック10で何度も荷重を吊上げると次第に開口wが広くなり、フック鉤部11bが元の位置から下がることとなる。このため、その広がりが大きくなり、切欠部の係止長さ以上に荷重による変形が大きくなると、やがてレバー13の先端13sが切欠部11cの切欠端11CVから外れ、図2の2点鎖線で示すように、係止位置から外方へ突出する。 Further, as described above, the hook-shaped hook body 11a gradually widens the opening w when the load is lifted by the hook 10 many times, and the hook flange portion 11b is lowered from the original position. Therefore, the spread becomes large, the deformation due to the load becomes larger than the engagement length of the notch, eventually deviate tip 13s of the lever 13 from the notch end 11 CV of notch 11c, by a two-dot chain line in FIG. 2 As shown, it projects outward from the locking position.

このような状態までフック鉤部11bの広がりが大きくなることは、フック本体11a自体が使用限界を越えて使用され、寿命を越えたことを意味する。従ってレバー13を上述のような係合関係となるように設けることにより使用限度を知ることができる。このため、従来のように使用の際にその都度ノギスでフック鉤部11bの広がりを測定するという作業は省略することができる。又、玉掛けワイヤ7が無負荷時に外れることがないため、荷役作業が中断されることがなくなる。   The expansion of the hook collar 11b up to such a state means that the hook body 11a itself has been used beyond the service limit and has exceeded its service life. Therefore, the use limit can be known by providing the lever 13 so as to have the above-mentioned engagement relationship. For this reason, the work of measuring the spread of the hook collar 11b with a caliper each time it is used as in the prior art can be omitted. Moreover, since the sling wire 7 does not come off when there is no load, the cargo handling operation is not interrupted.

なお、フック本体11aは、その首部11hからU字形を成すフック鉤部11bまで所定のほぼ同一厚さとして形成されているが、図3に示すように、レバー13もフック本体11aと略同一厚さとしている。これにより、荷役作業時の引掛りをなくしている。又、フック本体11aの首部11hから上方に一体に設けられたアイリング12は、その断面が半月状として形成されている。半月状とし、接続されるワイヤロープの曲率半径を大きくすることにより、ワイヤロープへの負荷時のダメージを極力低減するようにしている。この場合、ワイヤロープの固縛にシンブルを使用しなくてもよくなる。さらに、図1に示すように、フック本体11aの上方内側には逃し面11dが段差状に設けられているため、開口部wが広くなっている。このため、従来のようにレバー3自体が障害となって開口部wが狭くなることがない。   The hook body 11a is formed to have a predetermined substantially same thickness from the neck portion 11h to the hook collar portion 11b having a U-shape. However, as shown in FIG. 3, the lever 13 is also substantially the same thickness as the hook body 11a. I am trying. Thereby, the catch at the time of cargo handling work is eliminated. Further, the eye ring 12 integrally provided upward from the neck portion 11h of the hook main body 11a has a half-moon shaped cross section. By making it a half-moon shape and increasing the radius of curvature of the wire rope to be connected, damage to the wire rope when loaded is reduced as much as possible. In this case, it is not necessary to use a thimble for securing the wire rope. Further, as shown in FIG. 1, the relief surface 11 d is provided in a step shape on the upper inner side of the hook main body 11 a, so that the opening w is widened. For this reason, unlike the conventional case, the lever 3 itself does not become an obstacle and the opening w is not narrowed.

上記実施形態ではフック本体11aの首部11hには連結部材としてアイリング12を一体に形成した例を示したが、アイリング12に代えて吊りロッド(軸)を一体に形成してもよい。又、レバー13に設けられた膨出部16は、直線上に傾斜して膨出する形状としたが、上端から側部材13aの面と平行に膨出する形状とすることもできる。   In the above embodiment, the example in which the eye ring 12 is integrally formed as the connecting member on the neck portion 11h of the hook body 11a is shown, but a hanging rod (shaft) may be integrally formed instead of the eye ring 12. Further, the bulging portion 16 provided on the lever 13 has a shape that swells while being inclined in a straight line, but may also have a shape that bulges from the upper end in parallel with the surface of the side member 13a.

実施形態の荷役用フックの全体構成図Overall configuration diagram of the cargo handling hook of the embodiment 同上のレバーの拡大詳細図Detailed enlarged view of the lever 図2の矢視III −III からの側面図Side view from arrow III-III in Fig. 2 レバーの拡大斜視図Enlarged perspective view of the lever 従来例の荷役用フックの全体構成図Overall configuration diagram of conventional cargo handling hook 同上フックから玉掛けワイヤが外れる状態の説明図Explanatory drawing of the state where the sling wire comes off from the hook

符号の説明Explanation of symbols

10 荷役用フック
11a フック本体
11b フック鉤部
11c 切欠部
11CH 切欠底
11CV 切欠端
11E
11h 首部
12 アイリング
13 レバー
13a 側部材
14 支持片
15 ばね
16 膨出部
w 開口
10 Hook for cargo handling 11a Hook body 11b Hook collar 11c Notch 11 CH Notch bottom 11 CV notch end 11 E end 11h Neck 12 Eye ring 13 Lever 13a Side member 14 Support piece 15 Spring 16 Bump w

Claims (2)

U字形の鉤部を先端部に有するフック本体と、そのフック本体の後端部に連結されて鉤部の開口を内側から開閉する揺動可能なレバーと、そのレバーの先端が鉤部の先端部内側に当接する閉鎖方向に向けてレバーを付勢する弾性部材とから成る荷役用フックにおいて、上記レバーの外面にレバー長さ方向に延びて先端面が鉤部の先端部内面に対向する膨出部を設け、その膨出部のレバー先端側の高さをレバーの閉鎖状態で鉤部の先端に略一致させたことを特徴とする荷役用フック。   A hook body having a U-shaped hook at the tip, a swingable lever connected to the rear end of the hook body to open and close the opening of the hook from the inside, and the tip of the lever is the tip of the hook In the cargo handling hook comprising an elastic member that urges the lever toward the closing direction in contact with the inner side of the part, it extends in the lever length direction on the outer surface of the lever and the tip surface faces the inner surface of the tip part of the collar portion. A cargo handling hook, characterized in that a protruding portion is provided, and the height of the bulging portion on the lever tip side is substantially coincident with the tip of the collar portion when the lever is closed. 前記鉤部の先端部内面にレバー先端部を係止してレバーを閉鎖状態に保持する切欠部を設け、その切欠部に対するレバーの係止長さを鉤部が使用限度に至る変形によってレバーの係止が解除される長さに設定したことを特徴とする請求項1に記載の荷役用フック。   A notch portion is provided on the inner surface of the end portion of the flange portion to lock the lever end portion and hold the lever in a closed state, and the length of the lever with respect to the notch portion is changed by the deformation of the lever portion to the use limit. 2. The cargo handling hook according to claim 1, wherein the length is set to a length at which the locking is released.
JP2005088405A 2005-03-25 2005-03-25 Cargo handling hook Pending JP2006264953A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013245043A (en) * 2012-05-24 2013-12-09 Ihi Construction Machinery Ltd Wire arrangement structure of hanging piece
JP2020147393A (en) * 2019-03-12 2020-09-17 株式会社神内電機製作所 Coming-off stop device of hook

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6414791A (en) * 1987-07-08 1989-01-18 Hitachi Ltd Semiconductor storage device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6414791A (en) * 1987-07-08 1989-01-18 Hitachi Ltd Semiconductor storage device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013245043A (en) * 2012-05-24 2013-12-09 Ihi Construction Machinery Ltd Wire arrangement structure of hanging piece
JP2020147393A (en) * 2019-03-12 2020-09-17 株式会社神内電機製作所 Coming-off stop device of hook

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