JPS625180Y2

JPS625180Y2 -

Info

Publication number: JPS625180Y2
Application number: JP841880U
Authority: JP
Priority date: 1980-01-26
Filing date: 1980-01-26
Publication date: 1987-02-05
Also published as: JPS56109754U

Description

【考案の詳細な説明】高所作業、例えば送電鉄塔における作業におい
ては、鉄塔の上下方向に昇降用ガイドレール、水
平方向各位置に水平ガイドレールを附設し、この
ガイドレールに墜落防止安全器を係合し、これら
の墜落防止安全器に緊締されたロープ等の先端を
作業者がその身体に固定した安全ベルト等に連結
するような墜落防止装置が用いられている。万
一、踏みはずすようなことがあつた場合、上述の
墜落防止安全器が動作して大事故は防止される。
作業者が鉄塔に上るものとすると、昇降用ガイド
レールに係合された墜落防止安全器に緊締された
ロープを安全ベルトと連結するが、前記の安全器
は作業者の移動に従つてガイドレールを摺動す
る。目的の高さに昇り終り、横方向に移動する場
合は、昇降用ガイドレールに係合された安全器と
の連結を解除して、水平ガイドレールに係合され
た安全器に緊締されたロープと安全ベルト等を連
結して行動に移る。このようなロープとベルト等
との連結、解除操作中に今まで連結してきたロー
プの解除を行つたあと新たなロープの連結を行う
ものとすると、たとえ僅かな時間といえ、そのい
ずれのロープによつても作業者は支持されないこ
とになる。そこで、このような僅かな時間内とい
えど不測の事故が生じないように、連結を変更す
る場合、新しいロープの連結が終らなければ、い
ままで連結していたロープは解除されないような
構成を有する鎖錠装置がすでにいくつか提案され
ている。本考案もその目的とするところは前述の
ものと軌を一つにするものであるが、鎖錠の解除
はロープ先端に緊締されたマグネツト付フツクを
用いて行う新規な考えに基づく鎖錠装置を提供す
るものである。[Detailed description of the invention] When working at heights, for example on power transmission towers, guide rails for lifting and lowering are attached to the top and bottom of the tower, and horizontal guide rails are attached to each horizontal position, and fall prevention safety devices are attached to these guide rails. Fall prevention devices are used in which the tip of a rope or the like that is engaged and tightened by these fall prevention safety devices is connected to a safety belt or the like that is fixed to the worker's body. In the unlikely event that you trip, the above-mentioned fall prevention safety device will operate to prevent a major accident.
When a worker climbs a steel tower, a safety belt is connected to a rope that is tightened to a fall prevention safety device that is engaged with a climbing guide rail. slide. When you have finished climbing to the desired height and want to move laterally, disconnect the safety device engaged with the lifting guide rail and release the rope tightened to the safety device engaged with the horizontal guide rail. Connect the safety belt, etc., and take action. During such connection and release operations between ropes and belts, etc., if a new rope is to be connected after the previously connected rope is released, even if it is only for a short time, any of the ropes may be disconnected. Even if this happens, the workers will not be supported. Therefore, in order to prevent unforeseen accidents from occurring even within such a short period of time, the system is designed so that when changing the connection, the previously connected ropes will not be released until the new rope connection is completed. Several locking devices have already been proposed. The purpose of the present invention is to be the same as the above-mentioned one, but it is a locking device based on a novel idea in which the lock is released using a magnetic hook fastened to the end of the rope. It provides:

以下図面に示す実施例について説明する。 The embodiments shown in the drawings will be described below.

第１図は鎖錠金具の外観を示し、第２図は同断
面図である。１は鎖錠金具全体を示すものである
が、第２図に示すように、鎖錠用可動機構２を構
成する部分の係合片を除いて、全体は通常非磁性
または磁性の小さい金属材料によつて形成されて
いる。基体３の外形はほぼ方形をなすが、その並
行する２腕の中間を並行に通る可動機構支持部４
が形成されており、一方は安全ベルト等を通すた
め比較的巾のせまい挿通孔５が形成され、他方は
可動機構２が支持され、且つ動作する空間６が形
成される。第１図に示す鎖錠金具１の外観からわ
かるように、ベルト等挿通孔５が形成される端部
において、基体３は上方にある角度折曲されてお
り、本鎖錠金具１をベルトに装着した場合、可動
機構２の部分が人体面より突出して操作しやすい
ように考慮されている。なお７はベルトに挿入の
際の滑りをよくする回転リングである。前記ベル
ト等挿通孔５の反対側において可動機構支持部４
の中央部にほぼ半円形もしくはこれより若干大き
い半円形状の凹部８が形成されており、更に凹部
８が空間６に終る縁部にはそれぞれ、係合突縁１
０を有する係合凹部９が形成されている。前記半
円形状の凹部８に空間６を間にして対向する基体
３の腕１１の中央部分に、ある長さ腕１１より細
い腕部１２が形成される。これは後述のフツクを
挿通させるためのものである。また腕部１２の部
分の空間６側の両端に突起１３が形成させてい
る。１４は鎖錠杆である。鎖錠杆１４は全体とし
て十字形をなし、後述の係合片２１を除き、非磁
性金属によつて形成される。その第１の腕木１５
は端部で２つに分岐されて受板１６を形成してそ
の間に腕１１および１２を保持し、鎖錠杆１４は
空間６を２つに区分して後述のフツク金具支持部
を作る。受板１６の内側で腕木１５の方向に中空
とされ、奥にコイルばね１７、受板１６に近接す
る位置に樹脂製の係止片１８が挿入される。この
受板１６を有する部分の丁度180度反対側はその
端面がほぼ円形状に形成され、またの中心部に軸
孔１９があけられる。そしてこの腕木１５の中間
で、若干軸孔１９に近い部分より直角に第２の腕
木２０が突出され、その根本附近に後述の係合片
２１を軸止するための軸孔２２があけられる。な
お軸孔２２の周辺部分は適当に削りとられて、前
記の係合片２１を軸止した場合、第１の腕木１５
の面より突出しないようなくぼみ２３が形成され
ている。磁性を有する係合片２１には係合突起２
４およびコイルばね３０保持用の穴２５および軸
止用の孔２２′が設けられており、係合片２１は
その軸止用の孔２２′を軸孔２２に合せて回動自
在に軸止され、組立後はそのいずれかの係合突起
２４が、係合突縁１０と係合するように設計され
ている。このように組立られた鎖錠杆１４に第１
図に示すような鎖錠杆１４の１部を露出させるよ
うな窓３１および、軸２６およびフレームかしめ
２７のためなどの孔を有する断面コの字状の非磁
性支持フレーム２８をかぶせるとともに、予め支
持フレーム２８に固定されたコイルばね３０を係
合片２１の穴２５に挿入し、鎖錠杆１４の先端受
板１６を腕１１をはさむ位置に置き、支持フレー
ム２８上の孔を可動機構支持部４に予め挿通され
た孔および第１の腕木１５上に設けられた軸孔１
９に合せて両面かしめを行えば、鎖錠金具１が形
成される。なお軸２６のかしめによつて、鎖錠杆
１４は回動性を失わないようにかしめられる。
今、第２図において、係合片２１の係合突起２４
は、可動機構支持部４の下側の係合突縁１０と係
合し、この状態では下側の係合部は下側のコイル
ばね３０の押圧力によつて一つの係合位置に保持
されている。後述するようにマグネツトの吸引力
によつて引張られるときは、係合片２１の回転軸
を中心に係合片２１は回動し、前記の係合をはず
し、手により第１の腕木１５を時計方向に回動す
れば、係合突起２４はコイルばね３０に押圧され
た状態で、可動機構支持部４の空間６に面する部
分の傾斜面を摺動して次第にもとの位置より遠ざ
かる。これに対して、同時に上側の係合突起２４
は前記と同様な傾斜面をコイルばね３０の押圧に
抗しながら摺動し、上側の可動機構支持部４の係
合突縁１０と係合する。このとき、第１の腕木１
５の先端に設けられた受板１６は腕１１より腕１
２を間にはさみながら下側の突起１３の部分に到
達するが、突起１３は上記の係合と同時に、コイ
ルばね１７によつて上方に押圧力を有する係子片
１８の先端のくぼみと係合する。このような状態
でもし、突起１３による係合がはずれたとしても
反時計方向には上側の係合突起２４と係合突縁１
０との係合により回動することはなく、時計方向
への過度の回動も第２の腕木２０の先端と可動機
構支持部４の傾斜部分を適当な形状とすることに
より、腕木２０の先端が前記の傾斜面と接してそ
れ以上の回動は停止するように構成することがで
きる。 FIG. 1 shows the external appearance of the lock fitting, and FIG. 2 is a sectional view thereof. 1 shows the entire lock fitting, and as shown in Fig. 2, the entire lock fitting is usually made of non-magnetic or small magnetic metal material, except for the engaging piece that constitutes the movable locking mechanism 2. It is formed by. The outer shape of the base body 3 is approximately rectangular, and a movable mechanism support portion 4 runs parallel to the middle of the two parallel arms.
A relatively narrow insertion hole 5 is formed on one side for passing a safety belt or the like, and a space 6 in which the movable mechanism 2 is supported and operates is formed on the other side. As can be seen from the appearance of the lock fitting 1 shown in Fig. 1, the base body 3 is bent upward at an angle at the end where the belt etc. insertion hole 5 is formed, and the main lock fitting 1 is attached to the belt. When worn, the movable mechanism 2 is designed to protrude from the surface of the human body for easy operation. Note that 7 is a rotating ring that improves slippage when inserted into the belt. A movable mechanism support portion 4 is provided on the opposite side of the belt etc. insertion hole 5.
A substantially semicircular or slightly larger semicircular recess 8 is formed in the center of the recess 8 , and an engaging protrusion 1 is provided at each edge of the recess 8 where the recess 8 ends in the space 6 .
An engagement recess 9 having a diameter of 0 is formed. An arm portion 12 having a certain length and thinner than the arm 11 is formed at the center portion of the arm 11 of the base body 3 facing the semicircular recess 8 with a space 6 in between. This is for inserting a hook, which will be described later. Furthermore, protrusions 13 are formed at both ends of the arm portion 12 on the space 6 side. 14 is a locking rod. The locking rod 14 has a cross shape as a whole, and is made of non-magnetic metal except for an engaging piece 21 which will be described later. The first armrest 15
is bifurcated into two at the end to form a receiving plate 16, between which the arms 11 and 12 are held, and the locking rod 14 divides the space 6 into two to form a hook support portion to be described later. The inside of the receiving plate 16 is hollow in the direction of the arm 15, and a coil spring 17 is inserted in the back, and a resin locking piece 18 is inserted in a position close to the receiving plate 16. Exactly 180 degrees opposite to the portion having the receiving plate 16, the end surface thereof is formed into a substantially circular shape, and a shaft hole 19 is bored in the center thereof. In the middle of this arm 15, a second arm 20 is projected at a right angle from a portion slightly closer to the shaft hole 19, and a shaft hole 22 for locking an engaging piece 21, which will be described later, is bored near the base of the second arm 20. Note that when the peripheral portion of the shaft hole 22 is appropriately shaved off and the engagement piece 21 is fixed, the first arm 15
A recess 23 is formed so that it does not protrude beyond the surface. The magnetic engaging piece 21 has an engaging protrusion 2.
4, a hole 25 for holding the coil spring 30, and a hole 22' for a shaft stop. After assembly, one of the engaging protrusions 24 is designed to engage with the engaging protrusion 10. The locking rod 14 assembled in this way has the first
As shown in the figure, a non-magnetic support frame 28 having a U-shaped cross section having a window 31 exposing a part of the locking rod 14 and holes for the shaft 26 and frame caulking 27 is covered with the non-magnetic support frame 28. The coil spring 30 fixed to the support frame 28 is inserted into the hole 25 of the engagement piece 21, the tip receiving plate 16 of the locking rod 14 is placed in a position to sandwich the arm 11, and the hole on the support frame 28 is inserted into the hole 25 for supporting the movable mechanism. A hole inserted in advance into the portion 4 and a shaft hole 1 provided on the first arm 15
By crimping both sides according to step 9, the locking fitting 1 is formed. By caulking the shaft 26, the locking rod 14 is caulked so as not to lose its rotatability.
Now, in FIG. 2, the engagement protrusion 24 of the engagement piece 21
engages with the lower engagement protrusion 10 of the movable mechanism support part 4, and in this state, the lower engagement part is held in one engagement position by the pressing force of the lower coil spring 30. has been done. As will be described later, when it is pulled by the attraction force of the magnet, the engaging piece 21 rotates around its rotation axis, releases the engagement, and removes the first arm 15 by hand. When rotated clockwise, the engagement protrusion 24 slides on the inclined surface of the portion of the movable mechanism support portion 4 facing the space 6 while being pressed by the coil spring 30 and gradually moves away from its original position. . On the other hand, at the same time, the upper engagement protrusion 24
slides on the same inclined surface as described above while resisting the pressure of the coil spring 30, and engages with the engagement flange 10 of the upper movable mechanism support section 4. At this time, the first arm 1
The receiving plate 16 provided at the tip of the arm 1 is lower than the arm 11.
At the same time as the above-mentioned engagement, the protrusion 13 engages with the recess at the tip of the engaging piece 18 which is pushed upward by the coil spring 17. match. In such a state, even if the engagement by the protrusion 13 is disengaged, the upper engagement protrusion 24 and the engagement protrusion 1 will move counterclockwise.
By making the tip of the second arm 20 and the inclined part of the movable mechanism support part 4 into appropriate shapes, the arm 20 can be prevented from rotating due to engagement with the second arm 20 and excessive clockwise rotation. It can be configured such that the tip comes into contact with the inclined surface and further rotation is stopped.

第３図は上記の鎖錠金具１とともに用いられる
フツクの１例である。フツク金具４１は非磁性ま
たは磁性の弱い金属材料より形成されることが好
ましい。４２は一端に設けられた、安全器との間
を結ぶロープ用の孔である。ロープとの摩擦を避
けるためリング４３が嵌められている。他端には
フツクが形成され、その側にはフツク金具４１の
長手方向に向けて開孔４４を有する。４５は前記
の開孔４４を開閉する金具であり、その一端はフ
ツク金具４１の本体上で軸止めされ、他端の間で
フツク金具４１の本体に支持したコイルばね４６
が当接され、その結果、開閉金具４５は常時その
他端において、開孔４４を閉じた状態を維持して
いる。４７は開閉金具４５を鎖錠するための固定
金具であり、図において開閉金具４５とは反対の
側、つまりフツク開孔４４の反対側で、その一端
が軸止され、他端との間に開閉金具４５と同様に
コイルばねがフツク金具４１の本体との間に介装
されて、通常の状態では軸止された部分を中心に
外側に張り出している。この固定金具４７の軸止
部分に近い上縁の一端に、上記の開閉金具４５が
開孔４４を閉じている状態で、その一端と接触す
る係合部４９が設けられている。開孔４４の閉鎖
の状態から開孔するには、まず固定金具４７をコ
イルばね４８の力に抗して押さえつけると係合部
４９がはずれ、次にこのはずれた状態で開閉金具
４５を押えつけると開孔する。この押えつけを解
除すれば、両金具はもとの位置に復帰する。５０
はフツク金具４１の頂部に凹部を設けこの部分に
鑞付その他により埋込み、固定したマグネツトで
ある。開孔４４の入口部分は開閉金具４５を押し
て一杯に開孔させたとき、前記鎖錠金具１の腕木
１２の部分、つまり細い部分のみ挿通できる巾を
有するように形成して置き、挿通後はフツク金具
４１を腕１１のような太い部分に移動させるよう
な大きさの孔を有するようにする。さて、最初に
説明したのように鉄塔に昇つて作業するものとし
て、作業者は昇降ガイドレールに係合された安全
器に緊締したロープの先端に緊締された本考案の
フツク金具４１を係合させる。この場合、フツク
金具４１の開閉金具４５を押してフツクを開孔さ
せ、鎖錠金具１の腕１２の内方向よりフツクを通
し、開閉金具４５を閉じ、挿入されたフツク金具
４１の頂部に埋込まれたマグネツト５０を磁性を
有する係合片２１に近接させれば、係合片２１は
軸止された部分を軸として、その係合を解除し、
手をもつて鎖錠杆１４を回動させれば、やがて、
新たに鎖錠したのとは反対側の係合が行われ、こ
こに鎖錠は完成する。作業者が鉄塔に昇り終り、
横方向に移動するときは、まず水平方向に係合さ
れた安全器に緊締されたロープの端に緊締された
本考案によるフツク金具４１を鎖錠杆１４に区分
され、あいている方の鎖錠金具１の区分に挿通
し、頂部のマグネツト５０をその区分に位置する
係合片２１に近接させれば、今まで係合していた
区分における係合は解除され、手により鎖錠杆１
４を回動すれば、新しい区分に挿通されたフツク
金具４１は鎖錠され、縦方向に引上げて来たフツ
ク金具４１は容易に取りはずすことができる。本
考案によれば、以上の説明から理解されるよう
に、マグネツトを用いることが一つの特徴ではあ
るが、マグネツトによる鎖錠の解除は、通常には
新たに他方の区分にフツク金具を挿通したときに
のみ行うことができるので、フツク金具の着けか
え作業を極めて確実なものとすることができ、ま
たフツク金具自体もある特定の腕の箇所のみで挿
通させることができるから、一層安全性を向上さ
すことができる。 FIG. 3 shows an example of a hook used with the locking fitting 1 described above. The hook fitting 41 is preferably made of a non-magnetic or weakly magnetic metal material. 42 is a hole provided at one end for a rope to be connected to the safety device. A ring 43 is fitted to avoid friction with the rope. A hook is formed at the other end, and an opening 44 is formed in the longitudinal direction of the hook fitting 41 on that side. Reference numeral 45 denotes a metal fitting for opening and closing the aperture 44, one end of which is fixed on the main body of the hook metal fitting 41, and a coil spring 46 supported on the main body of the hook metal fitting 41 between the other ends.
As a result, the opening/closing fitting 45 always keeps the opening 44 closed at the other end. Reference numeral 47 denotes a fixing fitting for locking the opening/closing fitting 45. One end of the fixing fitting 47 is pivoted on the side opposite to the opening/closing fitting 45 in the figure, that is, the opposite side of the hook opening 44, and there is a lock between the other end. Similar to the opening/closing fitting 45, a coil spring is interposed between the main body of the hook fitting 41, and under normal conditions projects outward from the pivoted portion. An engaging portion 49 is provided at one end of the upper edge of the fixing fitting 47 near the pivoting portion, and comes into contact with one end of the opening/closing fitting 45 when the opening 44 is closed. To open the hole 44 from the closed state, first press the fixing fitting 47 against the force of the coil spring 48 to disengage the engaging portion 49, and then press the opening/closing fitting 45 in this disengaged state. and open a hole. When this pressure is released, both metal fittings return to their original positions. 50
The magnet is provided with a recessed portion at the top of the hook fitting 41 and is embedded and fixed in this portion by brazing or other means. The entrance portion of the opening 44 is formed to have a width that allows only the arm 12 portion of the locking fitting 1, that is, the thin portion, to be inserted when the opening/closing fitting 45 is pushed to the full extent. The hole has a size that allows the hook metal fitting 41 to be moved to a thick part such as the arm 11. Now, as explained at the beginning, when working by climbing up the steel tower, the worker engages the hook fitting 41 of the present invention, which is tightened to the end of the rope, which is tightened to the safety device which is engaged with the elevating guide rail. let In this case, push the opening/closing fitting 45 of the hook fitting 41 to open the hook, pass the hook from the inside of the arm 12 of the locking fitting 1, close the opening/closing fitting 45, and insert the hook into the top of the inserted hook fitting 41. When the magnet 50 is brought close to the magnetic engagement piece 21, the engagement piece 21 releases its engagement with the fixed portion as the axis.
If you turn the locking rod 14 with your hand, eventually,
The new lock is engaged on the opposite side, and the lock is completed. The workers finished climbing the steel tower,
When moving in the lateral direction, first the hook fitting 41 of the present invention, which is tightened to the end of the rope that is tightened to the safety device engaged in the horizontal direction, is divided into the locking rods 14, and the open chain is When it is inserted into a section of the lock fitting 1 and the magnet 50 at the top is brought close to the engagement piece 21 located in that section, the engagement in the previously engaged section is released, and the lock rod 1 can be removed by hand.
4, the hook fitting 41 inserted into the new section is locked, and the hook fitting 41 that has been pulled up in the vertical direction can be easily removed. According to the present invention, as can be understood from the above explanation, one of the features is the use of a magnet, but in order to release a lock using a magnet, it is usually necessary to newly insert a hook metal fitting into the other section. This can be done only occasionally, making the work of replacing the hook metal fittings extremely reliable, and the hook metal fittings themselves can be inserted only in a certain part of the arm, further increasing safety. It can be improved.

[Brief explanation of the drawing]

第１図は本考案に用いられる鎖錠金具の１例の
外観を示し、第２図は第１図鎖錠金具の断面図を
示し、第３図は本考案に用いられるフツク金具の
１例を示す。１……鎖錠金具、２……鎖錠用可動機構、３…
…鎖錠金具の基体、４……可動機構支持部、５…
…ベルト挿通孔、６……可動機構用空間、７……
ベルトリング、８……可動機構支持部の凹部、９
……係合凹部、１０……係合突縁、１１……基体
の腕、１２……細い腕部、１３……突起、１４…
…鎖錠杆、１５，２０……腕木、１６……受板、
１７……コイルばね、１８……係止片、１９……
軸孔、２１……係合片、２２，２２′……軸孔、
２３……くぼみ、２４……係合突起、２５……押
え板保持用の穴、２６……軸、２７……かしめ、
２８……非磁性フレーム、３０……コイルばね、
３１……非磁性フレームの窓、４１……フツク金
具、４２……ロープ用孔、４３……リング、４４
……フツクの開孔、４５……開閉金具、４６，４
８……コイルばね、４７……固定金具、４９……
固定金具４７上の係合部、５０……マグネツト。 Fig. 1 shows the appearance of an example of the lock fitting used in the present invention, Fig. 2 shows a cross-sectional view of the lock fitting shown in Fig. 1, and Fig. 3 shows an example of the hook fitting used in the present invention. shows. 1...Lock fitting, 2...Movable locking mechanism, 3...
... Base body of lock fitting, 4 ... Movable mechanism support part, 5 ...
...Belt insertion hole, 6... Space for movable mechanism, 7...
Belt ring, 8... Recessed part of movable mechanism support part, 9
...Engagement recess, 10...Engagement protrusion, 11...Arm of base, 12...Thin arm, 13...Protrusion, 14...
...Lock rod, 15,20...Brace, 16...Brace plate,
17... Coil spring, 18... Locking piece, 19...
Shaft hole, 21... engaging piece, 22, 22'... shaft hole,
23... recess, 24... engaging protrusion, 25... hole for holding the presser plate, 26... shaft, 27... caulking,
28...Nonmagnetic frame, 30...Coil spring,
31... Window of non-magnetic frame, 41... Hook fitting, 42... Rope hole, 43... Ring, 44
...Hook opening, 45...Opening/closing fitting, 46,4
8...Coil spring, 47...Fixing metal fittings, 49...
An engaging portion on the fixing fitting 47, 50... magnet.

Claims

[Scope of utility model registration request]

A movable mechanism support part of a base body having an arm through which a belt or the like is inserted and an arm thinner than the arm through which a hook fitting is inserted. An engaging piece made of a magnetic material is rotatably fixed to each of the arms, and by rotation of the locking rod, the engaging piece engages in a pressed state with one of the two engaging protrusions formed on the base body. and the tip of the locking rod can be fixed at either end of the arm portion through which the hook metal fitting is inserted by engaging with the engaging protrusion of any of the engaging pieces. The hook is equipped with a locking metal fitting and a hook opening having an entrance portion through which the arm of the hook metal fitting can be inserted, but cannot be inserted with the arm, and a hook metal fitting with a magnet is attached to the top of the hook, and is engaged by the magnet A locking device for a fall prevention device, characterized in that an engagement piece disposed therein is disengaged.