JP2005090056A - Reinforced preceding handrail frame - Google Patents

Reinforced preceding handrail frame Download PDF

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JP2005090056A
JP2005090056A JP2003323664A JP2003323664A JP2005090056A JP 2005090056 A JP2005090056 A JP 2005090056A JP 2003323664 A JP2003323664 A JP 2003323664A JP 2003323664 A JP2003323664 A JP 2003323664A JP 2005090056 A JP2005090056 A JP 2005090056A
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frame
handrail frame
horizontal
building
handrail
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JP4052466B2 (en
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Junji Inamori
純二 稲森
Shinji Yoshida
信二 吉田
Hiroyuki Yokoyama
博之 横山
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Sumitomo Metal Steel Products Inc
住友金属建材株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a preceding handrail frame causing no rupture even if a large load is suddenly applied. <P>SOLUTION: This preceding handrail frame 1 has a frame formed of a standard member 2, an upper horizontal member 3 and a lower horizontal member 4, and reinforcing materials 5 and 6 arranged in the frame. The preceding handrail frame is characterized by inserting a reinforcing wire 12 inside at least the upper horizontal member 3. Both ends of the reinforcing wire are fixed by a clip 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、建築現場等に使用する枠組足場に付設する転落防止用の補強型先行手摺枠に関する。   The present invention relates to a reinforced leading handrail frame for fall prevention that is attached to a frame scaffold used in a construction site or the like.
枠組足場は、一般に鳥居形状の建枠の複数個を建物とは直角に立設し、建物側に交差筋交いを斜めに取り付け自立させ、そして道路側に手摺を取り付けた後、立設した建枠の上辺(水平杆)の上に足場板を架け渡して固定することで、1単位の足場を形成し、これを複数回繰り返すことによって形成される。そして、各段の足場には、足場に乗って作業する作業者の安全を守る為に、手摺枠が取り付けられる。   A framework scaffold is generally a standing frame after standing a plurality of torii-shaped building frames at right angles to the building, crossing the crossing diagonally on the building side to make it stand alone, and attaching a handrail on the road side A scaffolding plate is laid and fixed on the upper side (horizontal heel) of the base plate to form one unit of scaffolding, which is formed by repeating this multiple times. A handrail frame is attached to each stage of the scaffold in order to protect the safety of workers who work on the scaffold.
この枠組足場を下から組み上げる場合、作業者が最上段の足場に乗ってから手摺枠を取り付けると作業者が転落する危険を伴う。この作業者の転落を防止するため、最上段の足場の一つ下の足場(この足場には手摺枠が既に取り付けられている)の位置から、作業者が最上段の足場用の手摺枠を先行して取り付けた後に、作業者が最上段の足場に乗るという順序を経ることによって、作業者の安全を守ることを可能にしたのが、先行手摺枠である。   When assembling this frame scaffold from the bottom, if the handrail frame is attached after the worker gets on the uppermost scaffold, there is a risk that the worker falls. In order to prevent the operator from falling, the operator can remove the handrail frame for the uppermost scaffold from the position of the scaffold one below the uppermost scaffold (the handrail frame is already attached to this scaffold). The preceding handrail frame has made it possible to protect the safety of the worker by going through the order in which the worker gets on the uppermost scaffold after being attached in advance.
この先行手摺枠が最上段の足場に取り付けられた後に、もう1段高い枠組足場を形成するときは、作業者は、さらにその1段上の足場用の先行手摺枠を取り付けた上で、新たに形成された最上段の足場に乗ることになる。   After the preceding handrail frame is attached to the uppermost scaffolding, when forming a frame scaffolding that is one step higher, the operator must attach a preceding handrail frame for the scaffolding that is one step higher, You will get on the top scaffolding formed in
このように、先行手摺枠は枠組足場を順次下から組み上げる際に用いられるが、枠組み足場が組み上げられた後は、通常の手摺枠として機能する。   As described above, the preceding handrail frame is used when the frame scaffolding is sequentially assembled from the bottom, but after the frame scaffolding is assembled, it functions as a normal handrail frame.
なお、逆の作業で、枠組足場を順次上から取り外す際にも、最上段の足場の一つ下の足場の位置から作業者が最上段の足場用の手摺枠を取り外すことができるため、作業者の安全を守ることができる。   In addition, when removing the frame scaffold from the top in reverse, the operator can remove the handrail frame for the top scaffold from the position of the scaffold one below the top scaffold. Can keep people safe.
ここで、先行手摺枠の一例を、図8に示す。図8は先行足場枠の一例を示す正面図である。先行足場枠1は、左右2本の建地材2,2並びに上部横地材3及び下部横地材4でもって枠形状の周囲が構成され、建地材と下部横地材を結ぶ一対の第一補強材5,5並びに一対の第一補強材5,5を結ぶ第二補強材6が枠内に設けられている。そして、建地材には、枠の外側に、上から順次、上部固定金具7、位置決め金具8、下部固定金具9が設けられている。   Here, an example of a preceding handrail frame is shown in FIG. FIG. 8 is a front view showing an example of a preceding scaffold frame. The preceding scaffold frame 1 has a frame-shaped periphery composed of two left and right building materials 2, 2 and an upper horizontal material 3 and a lower horizontal material 4, and a pair of first reinforcements connecting the building material and the lower horizontal material. A second reinforcing member 6 that connects the members 5 and 5 and the pair of first reinforcing members 5 and 5 is provided in the frame. The building material is provided with an upper fixture 7, a positioning fixture 8, and a lower fixture 9 in order from the top outside the frame.
図9は先行手摺枠を取り付ける作業を示す模式図である。作業員20の立っている現足場用の足場板51は、下方の足場板(図示せず)から作業員が複数の先行手摺枠52を取り付けた後、下方の足場の建枠43の上辺(水平杆)の上に足場板51を架け渡して形成されたものである。この足場板51が形成された後に、作業員はこの足場板51の上に乗って、下方の足場用の建枠43の上に現足場用の建枠53を縦方向に嵌合連結して複数設置した後に、建枠53の間に筋交い(図示せず)を建物側に斜めに取り付けて、建枠53を固定したものであるが、作業員がこの足場板51の上に乗る前に、現足場には既に手摺枠が設置されていることが分かる。そして、この固定された建枠53に現足場用の先行手摺枠52の上部固定金具7が固定される。   FIG. 9 is a schematic diagram showing an operation of attaching the preceding handrail frame. The scaffold 51 for the current scaffold on which the worker 20 stands is the upper side of the lower scaffolding frame 43 after the worker attaches a plurality of preceding handrail frames 52 from the lower scaffold plate (not shown). The scaffolding plate 51 is formed on the horizontal rod). After the scaffold board 51 is formed, the worker rides on the scaffold board 51 and vertically connects the building frame 53 for the current scaffold onto the building frame 43 for the lower scaffold. After the installation, a brace (not shown) is obliquely attached to the building side between the building frames 53 and the building frame 53 is fixed. Before the worker gets on the scaffolding plate 51, the building frame 53 is fixed. It can be seen that a handrail frame is already installed in the current scaffold. The upper fixing bracket 7 of the preceding handrail frame 52 for the current scaffold is fixed to the fixed building frame 53.
この図中の作業員20は、現足場用の足場板51の上に立って、上方足場用の先行手摺枠62を持ち上げ、位置決め金具8を建枠の所定位置に載置し、位置決め金具8を支点として先行手摺枠62を回転させ、その先行手摺枠62の下部固定金具9を現足場用の建枠53に嵌合させる。こうして、上方足場用の先行手摺枠62は現足場用の建枠53に固定されることになる。   The worker 20 in this figure stands on the scaffolding plate 51 for the current scaffold, lifts the preceding handrail frame 62 for the upper scaffold, places the positioning bracket 8 at a predetermined position of the building frame, and places the positioning bracket 8 The leading handrail frame 62 is rotated about the fulcrum, and the lower fixing bracket 9 of the leading handrail frame 62 is fitted to the building frame 53 for the current scaffold. Thus, the leading handrail frame 62 for the upper scaffold is fixed to the building frame 53 for the current scaffold.
また、逆に、枠組足場を順次上から取り外す際には、下方の足場に立つ作業者が下部固定金具を建枠からはずした後に、位置決め金具を支点として手摺り枠を逆回転させるだけで、簡単に取り外しができる。   On the other hand, when removing the frame scaffold from the top, the worker standing on the lower scaffold simply removes the lower fixing bracket from the building frame and then reverses the handrail frame with the positioning bracket as a fulcrum. Easy to remove.
特許文献1には、この先行手摺枠の例として、固定金具に工夫を凝らして、手摺枠の横揺れを防止したものが記載されている。   In Patent Document 1, as an example of the preceding handrail frame, a device in which the fixing bracket is devised to prevent the handrail frame from rolling is described.
特開平8−184177号公報JP-A-8-184177
上記のような先行手摺枠を最上段の足場用に設置してから、作業者は最上段の足場に乗ることができる。したがって、作業者が、手摺の設置されない状態で最上段の足場に乗ることはなくなったので、手摺の不設置による作業者の転落の危険はない。   After the preceding handrail frame as described above is installed for the uppermost scaffold, the operator can get on the uppermost scaffold. Therefore, since the worker no longer gets on the uppermost scaffold without the handrail installed, there is no danger of the operator falling due to the absence of the handrail.
しかしながら、手摺枠が設置されていても、高所での作業であるため、作業者は転落防止のための安全帯を身につけ、作業又は移動をするが、この際、作業者の転落防止のための安全帯の吊りもととして、先行手摺枠が使われる。   However, even if a handrail frame is installed, since it is a work at a high place, the worker wears a safety belt for preventing the fall and works or moves. A leading handrail frame is used as a base for the safety belt.
図10は、高所における作業者の移動を示す模式図である。ここでは、作業者20は安全帯70の一端を腰に紐付けし、他端を枠組み足場の手摺等に取り付けてから、移動をしている。このように、作業者の転落防止のための安全帯の吊り元として、先行手摺枠の上部横地材3が使われている。   FIG. 10 is a schematic diagram showing movement of an operator at a high place. Here, the worker 20 moves after attaching one end of the safety belt 70 to the waist and attaching the other end to a handrail or the like of the framework scaffold. As described above, the upper horizontal material 3 of the preceding handrail frame is used as a source of the safety belt for preventing the operator from falling.
ところが、作業者が足場の上で作業又は移動する際に、作業者がふらついて、作業者の体重が急激に先行手摺枠に掛かることがある。また、先行手摺枠を最上段の足場の一つ下の足場の位置から作業者が最上段の足場用の手摺枠を先行して取り付けたり、取り外したりする際にも、作業者がふらついたりして、作業者の体重が既に取り付けられている先行手摺枠に急激に掛かることがある。   However, when the worker works or moves on the scaffold, the worker may stagger and the weight of the worker may be suddenly applied to the preceding handrail frame. Also, when the operator attaches or removes the handrail frame for the uppermost scaffold from the position of the scaffold one below the uppermost scaffold, the worker may fluctuate. Thus, the weight of the operator may be suddenly applied to the preceding handrail frame to which the operator is already attached.
このように、先行手摺枠に大きな荷重が急激にかかると、先行手摺枠が破断し、破断部分から作業者が転落する恐れがある。   As described above, when a large load is suddenly applied to the preceding handrail frame, the preceding handrail frame may be broken and the operator may fall from the broken portion.
したがって、作業者が転落しないように、手摺枠に大きな荷重が急激に掛かっても破断しない手摺枠が求められている。   Accordingly, there is a demand for a handrail frame that does not break even when a large load is suddenly applied to the handrail frame so that the operator does not fall.
本発明者は、大きな破断強度を有する先行手摺枠を得るための手段を種々に検討した結果、次の知見を得た。   As a result of various studies on means for obtaining a leading handrail frame having a high breaking strength, the present inventor has obtained the following knowledge.
(1)先行手摺枠に要求される破断強度は、作業者の転落防止のための安全帯の吊りもととして充分な荷重が先行手摺枠に急激にかかる場合を想定すると、瞬間的に3000Nの荷重が先行手摺枠にかかっても破断しないだけの強度が必要となる。   (1) The breaking strength required for the preceding handrail frame is instantaneously 3000 N, assuming that a sufficient load is applied to the preceding handrail frame as a safety belt suspension for preventing the operator from falling. Even if a load is applied to the preceding handrail frame, it is necessary to have a strength that does not break.
(2)先行手摺枠に3000Nの荷重が急激に掛かっても破断しないだけの大きな強度にするためには、先行手摺枠の断面形状を大きくするか、先行手摺枠の材料を厚くすることが考えられるが、いずれも先行手摺枠自体の重量が大きくなってしまう。   (2) To increase the strength of the leading handrail frame so that it does not break even when a load of 3000 N is suddenly applied to the leading handrail frame, it is possible to increase the cross-sectional shape of the leading handrail frame or increase the material of the leading handrail frame. However, in both cases, the weight of the leading handrail frame itself is increased.
先行手摺枠の材料としては、従来からアルミニウム管や高張力鋼管等を用いることによって、軽量化が図られているが、それでも先行手摺枠1個の重量は約8kgあり、これを作業者が下の足場から両手を挙げて持ち上げて取り付けるものであるため、これ以上に先行手摺枠の重量が増えると、取り付け作業が不安定なものとなり、作業性だけでなく、安全性も低下する。この観点から、先行手摺枠自体の重量が大きくなることは許容されない。   As the material of the leading handrail frame, the weight has been conventionally reduced by using an aluminum tube, a high-tensile steel tube, or the like, but the weight of one leading handrail frame is still about 8 kg, and this can be reduced by the operator. Therefore, if the weight of the preceding handrail frame is further increased, the attachment work becomes unstable, and not only the workability but also the safety is lowered. From this point of view, the weight of the leading handrail frame itself is not allowed to increase.
(3)先行手摺枠の材料自体を変更するとなると、既存の先行手摺枠をすべて廃棄して、新たに先行手摺枠を作り直すことになり、莫大な費用がかかる。   (3) When the material of the leading handrail frame itself is changed, all the existing leading handrail frames are discarded and a new leading handrail frame is recreated, which entails enormous costs.
このような状況の下で、本発明者は、先行手摺枠自体の破断強度を上げる必要はなく、先行手摺枠の部材自体に亀裂が発生しても先行手摺枠の枠形状が保たれていれば、先行手摺枠は破断せず、作業員が転落することはないことに思い至った。   Under such circumstances, the present inventor does not need to increase the breaking strength of the preceding handrail frame itself, and the frame shape of the preceding handrail frame is maintained even if a crack occurs in the member of the preceding handrail frame itself. For example, the leading handrail frame did not break and the worker would not fall down.
そして、先行手摺枠の部材自体に亀裂が発生しても先行手摺枠の枠形状を保つことができる手段として、先行手摺枠の部材の内部に補強線を通すことを着想した。この結果、瞬間的に3000Nの荷重が先行手摺枠にかかって先行手摺枠の部材に亀裂が発生しても、補強線によって枠形状は保たれるので、作業員が転落することはないことが分かった。   Then, as a means for maintaining the frame shape of the preceding handrail frame even when a crack occurs in the member of the preceding handrail frame, the idea is to pass a reinforcement line inside the member of the preceding handrail frame. As a result, even if a load of 3000 N is instantaneously applied to the preceding handrail frame and a crack occurs in the member of the preceding handrail frame, the frame shape is maintained by the reinforcing wire, so that the worker does not fall down. I understood.
また、この手法は、先行手摺枠の重量を増すことはなく、また、既存の先行手摺枠の改造によっても製造が可能であって、既存の先行手摺枠が再利用できるという利点も有している。   In addition, this method does not increase the weight of the leading handrail frame, and can be manufactured by modifying the existing leading handrail frame, and has the advantage that the existing leading handrail frame can be reused. Yes.
さらに、この手法によれば、先行手摺枠の部材に亀裂が発生しても補強線によって枠形状は保たれるので、先行手摺枠の材料としてアルミニウム管や高張力鋼管以外の材料の使用も可能となる。たとえば、ポリエチレン管、ポリプロピレン管、ポリ塩化ビニル管のような安価で加工しやすい高分子材料管を使って先行手摺枠を製造することが可能である。   Furthermore, according to this method, the frame shape is maintained by the reinforcing wire even if cracks occur in the members of the preceding handrail frame, so it is possible to use materials other than aluminum tubes and high-tensile steel tubes as materials for the preceding handrail frame. It becomes. For example, it is possible to manufacture the handrail frame using a low-priced and easy-to-process polymer material pipe such as a polyethylene pipe, a polypropylene pipe, or a polyvinyl chloride pipe.
本発明は、このような知見と着想に基づいて完成したものであり、建地材と横地材から形成される枠と枠内に設けられた補強材を有する先行手摺枠であって、少なくとも上部横地材の内部に補強線が通してあることを特徴とする。   The present invention has been completed based on such knowledge and idea, and is a leading handrail frame having a frame formed from a building material and a horizontal material and a reinforcing material provided in the frame, and at least an upper part. It is characterized in that a reinforcing wire is passed through the inside of the horizontal material.
補強線は、上部横地材の内部に加えて、建地材の内部の一部又は全部に通してもよいし、さらに、下部横地材の内部に補強線が通してもよい。また、補強線は、補強材の内部に通してもよい。   In addition to the inside of the upper horizontal material, the reinforcing wire may be passed through a part or the whole of the building material, and further, the reinforcing wire may be passed through the lower horizontal material. The reinforcing wire may be passed through the inside of the reinforcing material.
補強線の材料は、特に限定するものではないが、ステンレス鋼線若しくはステンレス鋼線の撚線、又はポリアミド樹脂繊維若しくはポリアミド樹脂繊維の撚線を用いるのが好ましい。   The material of the reinforcing wire is not particularly limited, but it is preferable to use a stainless steel wire or a stranded wire of stainless steel wire, or a polyamide resin fiber or a stranded wire of polyamide resin fiber.
本発明によれば、急激に大きな荷重がかかっても破断することのない先行手摺枠を得ることができる。この際、先行手摺枠の重量を増すことなく、また、既存の先行手摺枠の改造によって得ることができる。   According to the present invention, it is possible to obtain a leading handrail frame that does not break even when a large load is suddenly applied. At this time, it can be obtained without increasing the weight of the preceding handrail frame and by modifying the existing preceding handrail frame.
さらに、先行手摺枠の材料として、ポリエチレン管等の安価で加工しやすい高分子材料管を使って先行手摺枠を製造することが可能である。   Furthermore, it is possible to manufacture a leading handrail frame using an inexpensive and easy-to-process polymer material tube such as a polyethylene tube as a material for the leading handrail frame.
本発明に係る先行手摺枠において、枠を形成する部材の内部に補強線を通す個所は、(1)上部横地材の内部、(2)建地材の内部、そして、(3)下部横地材の内部、の3つがある。先行手摺枠は、上部横地材、建地材、下部横地材の順で変形しやすい。したがって、補強線は、上部横地材の内部には必ず通す必要がある。そして、建地材の内部にも補強線を通すことが好ましい。また、先行手摺枠の亀裂発生個所は、上部横地材の中央部分、次いで、建地材と補強材の交点部分の順である。したがって、建地材の内部にも補強線を通す場合には、建地材の内部の全長にわたって補強線を通しても良いが、建地材と補強材の交点部分までをカバーするだけでもよい。なお、下部横地材については、変形量は少なく、また亀裂発生の頻度が少ないので、補強線を通すことの必要性は小さいが、その内部にも通してもよい。   In the preceding handrail frame according to the present invention, the portions through which the reinforcing wire is passed through the members forming the frame are (1) the inside of the upper horizontal material, (2) the inside of the building material, and (3) the lower horizontal material. There are three inside. The leading handrail frame is easily deformed in the order of the upper horizontal material, the building material, and the lower horizontal material. Therefore, it is necessary to pass the reinforcing wire through the upper horizontal material. And it is preferable to let a reinforcement wire pass also into the inside of building material. Moreover, the crack generation | occurrence | production location of a preceding handrail frame is the order of the center part of an upper horizontal material, and then the intersection part of a building material and a reinforcing material. Therefore, when the reinforcing wire is passed through the interior of the building material, the reinforcing wire may be passed through the entire length of the building material, or only the intersection of the building material and the reinforcing material may be covered. In addition, about a lower horizontal ground material, since there is little deformation amount and the frequency of a crack generation is low, although the necessity of letting a reinforcement wire pass is small, you may let it pass also to the inside.
補強線を先行手摺枠の部材内部に通すためには、補強線の両端を固定する必要があり、そのためにクリップ等の固定材が必要であるが、補強線を先行手摺枠の枠周全周にわたって通すときは、固定材が不要となる。このとき、下部にある補強線は下部横地材の中を通してもよいが、下部横地材の外を通してもよい。   In order to pass the reinforcing wire through the members of the preceding handrail frame, it is necessary to fix both ends of the reinforcing wire, and for that purpose, a fixing material such as a clip is required. When passing, no fixing material is required. At this time, the reinforcing wire in the lower part may pass through the lower horizontal material, or may pass through the lower horizontal material.
なお、先行手摺枠の枠内に設けられる補強材の中に、補強線を通してもよい。   Note that a reinforcing wire may be passed through the reinforcing material provided in the frame of the preceding handrail frame.
また、補強線は、瞬間的に3000Nの荷重がかかったときに、破断しない材料であればよいが、金属材料と高分子材料が好ましい。耐食性や高張力性の観点からはステンレス鋼線(例えば、SUS304)が好ましく、軽量性の観点からはポリアミド樹脂(例えば、ナイロン6)からなる繊維が好ましい。これらの補強線は、撚線形状で用いることが特に好ましい。   The reinforcing wire may be any material that does not break when a load of 3000 N is instantaneously applied, but a metal material and a polymer material are preferable. A stainless steel wire (for example, SUS304) is preferable from the viewpoint of corrosion resistance and high tension, and a fiber made of a polyamide resin (for example, nylon 6) is preferable from the viewpoint of lightness. These reinforcing wires are particularly preferably used in the form of a stranded wire.
そして、補強線を撚って撚線にして用いる場合は、撚線の外径としては、3.5〜6mmのものを用いることができる。特に、5mm程度のものが好ましい。   And when twisting a reinforcement wire and using it as a twisted wire, as an outer diameter of a twisted wire, a 3.5-6 mm thing can be used. In particular, about 5 mm is preferable.
図1〜図4に、本発明に係る先行手摺枠の数例を示す。   1 to 4 show several examples of the leading handrail frame according to the present invention.
図1は、上部横地材のみが補強された先行手摺枠1の一例を示す正面図である。左右2本の建地材2,2並びに上部横地材3及び下部横地材4でもって枠形状の周囲が構成され、建地材と下部横地材を結ぶ一対の第一補強材5,5並びに一対の第一補強材5,5を結ぶ第二補強材6が枠内に設けられている先行足場枠1のうち、上部横地材3の内部に補強線12が通してある。補強線12の両端は、クリップ10,10によって固定されている。   FIG. 1 is a front view showing an example of a preceding handrail frame 1 in which only the upper horizontal material is reinforced. A frame-shaped periphery is constituted by two left and right building materials 2, 2 and an upper horizontal material 3 and a lower horizontal material 4, and a pair of first reinforcing members 5, 5 and a pair connecting the building material and the lower horizontal material Among the preceding scaffold frame 1 in which the second reinforcement member 6 connecting the first reinforcement members 5 and 5 is provided in the frame, the reinforcement wire 12 is passed through the inside of the upper horizontal ground member 3. Both ends of the reinforcing wire 12 are fixed by clips 10 and 10.
図2は、上部横地材と建地材が補強された先行手摺枠1の一例を示す正面図である。上部横地材3及び建地材2,2の内部に補強線12を通してある。補強線12の両端は、クリップ10,10によって固定されている。   FIG. 2 is a front view showing an example of the preceding handrail frame 1 in which the upper horizontal material and the building material are reinforced. Reinforcing wires 12 are passed through the upper horizontal material 3 and the building materials 2 and 2. Both ends of the reinforcing wire 12 are fixed by clips 10 and 10.
図3は、同じく、上部横地材と建地材が補強された先行手摺枠1の一例を示す正面図である。ただし、補強線12は、上部横地材3の内部に全通しているが、左右の建地材2,2の内部は上方の一部のみに通っているだけである。これは、建地材のおける破断は、建地材2と第一補強材5の交点11において発生しやすいため、建地材の補強をする際には、少なくともこの交点11の個所をカバーすることで、ほぼ足りる場合があるからである。補強線12の両端は、クリップ10,10によって固定されている。   FIG. 3 is also a front view showing an example of the preceding handrail frame 1 in which the upper horizontal material and the building material are reinforced. However, the reinforcing wire 12 passes through the interior of the upper horizontal material 3, but the interior of the left and right building materials 2, 2 only passes through a part of the upper part. This is because the breakage in the building material is likely to occur at the intersection 11 between the building material 2 and the first reinforcing material 5, so that at least the location of the intersection 11 is covered when reinforcing the building material. This is because there are cases where it is almost sufficient. Both ends of the reinforcing wire 12 are fixed by clips 10 and 10.
図4もまた、上部横地材と建地材が補強された先行手摺枠1の一例を示す正面図である。ただし、補強線12は、上部横地材3及び左右の建地材2,2の内部だけでなく、さらに下部横地材の外を通してあって、先行手摺枠の枠周全周を通っているので、補強線の両端を固定するクリップが不要となる。   FIG. 4 is also a front view showing an example of the preceding handrail frame 1 in which the upper horizontal material and the building material are reinforced. However, since the reinforcing wire 12 passes not only inside the upper horizontal material 3 and the left and right building materials 2 and 2 but also outside the lower horizontal material, and passes through the entire circumference of the frame of the preceding handrail frame. Clips that fix both ends of the wire are not required.
図5は、上部横地材と建地材と下部横地材が補強された先行手摺枠1の一例を示す正面図である。補強線12は、上部横地材3及び左右の建地材2,2の内部に加えて、さらに下部横地材の内部を通してある。先行手摺枠の枠周全周を通っているので、補強線の両端を固定するクリップが不要となる。   FIG. 5 is a front view showing an example of the preceding handrail frame 1 in which the upper horizontal material, the building material, and the lower horizontal material are reinforced. In addition to the inside of the upper horizontal material 3 and the left and right building materials 2 and 2, the reinforcing wire 12 further passes through the inside of the lower horizontal material. Since the entire circumference of the preceding handrail frame is passed, there is no need for a clip for fixing both ends of the reinforcing wire.
図2に示す、上部横地材と建地材の内部に補強線を通して補強された先行手摺枠を用いて、落下試験を行った。   A drop test was performed using a leading handrail frame reinforced through a reinforcing wire inside the upper horizontal material and the building material shown in FIG.
落下試験は、高さ90cmから重量100kgの落下体を先行手摺枠に作用させることによって行った。このとき、先行手摺枠には、3000Nの荷重が掛かったことになる。   The drop test was performed by applying a falling body having a height of 90 cm to a weight of 100 kg to the preceding handrail frame. At this time, a load of 3000 N was applied to the leading handrail frame.
その結果は、図6に示すように、上部横地材3と建地材2に亀裂13がみられたが、補強線12の切断がなかったため、先行手摺枠1の枠形状は保たれており、先行手摺枠自体は破断しなかった。そして、落下体はこの亀裂部分から抜け落ちることはなく、転落を免れた。   As a result, as shown in FIG. 6, cracks 13 were observed in the upper horizontal material 3 and the building material 2, but the reinforcing wire 12 was not cut, so that the frame shape of the preceding handrail frame 1 was maintained. The leading handrail frame itself did not break. And the fallen body did not fall out from this crack part, and escaped the fall.
比較のため、同様の落下試験を、図8に示す補強線が通っていない先行手摺枠1について行ったところ、図7に示すように、建地材2と上部横地材3のつなぎ部分及び上部横地材3の中央部の2個所で亀裂が発生し、その亀裂部から落下体が抜け落ち、転落した。   For comparison, the same drop test was performed on the leading handrail frame 1 through which the reinforcing wire shown in FIG. 8 did not pass. As shown in FIG. 7, as shown in FIG. Cracks occurred at two locations in the center of the horizontal material 3, and the fallen body fell out of the crack and fell down.
本発明によれば、急激に大きな荷重がかかっても破断することのない先行手摺枠を得ることができる。 この際、先行手摺枠の重量を増すことなく、また、既存の先行手摺枠の改造によって得ることができる。   According to the present invention, it is possible to obtain a leading handrail frame that does not break even when a large load is suddenly applied. At this time, it can be obtained without increasing the weight of the preceding handrail frame and by modifying the existing preceding handrail frame.
さらに、先行手摺枠の材料として、ポリエチレン管等の安価で加工しやすい高分子材料管を使って先行手摺枠を製造することが可能である。   Furthermore, it is possible to manufacture a leading handrail frame using an inexpensive and easy-to-process polymer material tube such as a polyethylene tube as a material for the leading handrail frame.
上部横地材のみが補強された先行手摺枠の一例を示す正面図である。It is a front view which shows an example of the preceding handrail frame in which only the upper horizontal ground material was reinforced. 上部横地材と建地材が補強された先行手摺枠の一例を示す正面図である。It is a front view which shows an example of the preceding handrail frame in which the upper horizontal material and the building material were reinforced. 上部横地材と建地材が補強された先行手摺枠の他の例を示す正面図である。It is a front view which shows the other example of the preceding handrail frame in which the upper horizontal material and the building material were reinforced. 上部横地材と建地材が補強された先行手摺枠の、さらに他の例を示す正面図である。It is a front view which shows the further another example of the preceding handrail frame in which the upper horizontal material and the building material were reinforced. 上部横地材と建地材と下部横地材が補強された先行手摺枠の一例を示す正面図である。It is a front view which shows an example of the preceding handrail frame which the upper horizontal material, the building material, and the lower horizontal material were reinforced. 図2に示す先行手摺枠の落下試験後の状況を示す正面図である。It is a front view which shows the condition after the drop test of the preceding handrail frame shown in FIG. 補強線が通っていない先行手摺枠の落下試験後の状況を示す正面図である。It is a front view which shows the condition after the drop test of the preceding handrail frame which the reinforcement line has not passed. 補強線が通っていない先行手摺枠の一例を示す正面図である。It is a front view which shows an example of the preceding handrail frame which the reinforcement line does not pass. 先行手摺枠を取り付ける作業を示す模式図である。It is a schematic diagram which shows the operation | work which attaches a preceding handrail frame. 高所における作業者の移動を示す模式図である。It is a schematic diagram which shows the movement of the operator in a high place.
符号の説明Explanation of symbols
1 先行手摺枠
2 建地材
3 上部横地材
4 下部横地材
5 第一補強材
6 第二補強材
7 上部固定金具
8 位置決め金具
9 下部固定金具
10 クリップ
11 建地材と第一補強材の交点
12 補強線
13 亀裂
20 作業者
43 下方の足場用の建枠
51 足場板
52 現足場用の先行手摺枠
53 現足場用の建枠
62 上方足場用の先行手摺枠
70 安全帯
DESCRIPTION OF SYMBOLS 1 Leading handrail frame 2 Building material 3 Upper horizontal material 4 Lower horizontal material 5 First reinforcing material 6 Second reinforcing material 7 Upper fixing bracket 8 Positioning bracket 9 Lower fixing bracket 10 Clip 11 Intersection of building material and first reinforcing material DESCRIPTION OF SYMBOLS 12 Reinforcement line 13 Crack 20 Worker 43 Building frame for lower scaffolding 51 Scaffold plate 52 Leading handrail frame for current scaffolding 53 Building frame for current scaffolding 62 Handrailing frame for upper scaffolding 70 Safety belt

Claims (5)

  1. 建地材と横地材から形成される枠と枠内に設けられた補強材を有する先行手摺枠であって、少なくとも上部横地材の内部に補強線が通してあることを特徴とする先行手摺枠。   A preceding handrail frame having a frame formed from a building material and a horizontal material and a reinforcing material provided in the frame, wherein a reinforcing wire is passed through at least the upper horizontal material. .
  2. 建地材と横地材から形成される枠と枠内に設けられた補強材を有する先行手摺枠であって、少なくとも建地材及び上部横地材の内部に補強線が通してあることを特徴とする先行手摺枠。   A leading handrail frame having a frame formed from a building material and a horizontal material and a reinforcing material provided in the frame, wherein a reinforcing wire is passed through at least the building material and the upper horizontal material. The leading handrail frame.
  3. 建地材と横地材から形成される枠と枠内に設けられた補強材を有する先行手摺枠であって、少なくとも建地材並びに上部及び下部横地材の内部に補強線が通してあることを特徴とする先行手摺枠。   It is a preceding handrail frame having a frame formed from building material and horizontal material and a reinforcing material provided in the frame, and at least a reinforcing wire passes through the building material and the upper and lower horizontal materials. A featured handrail frame.
  4. 補強線がステンレス鋼線又はステンレス鋼線の撚線であることを特徴とする請求項1から3までのいずれか記載の先行手摺枠。   The advance handrail frame according to any one of claims 1 to 3, wherein the reinforcing wire is a stainless steel wire or a stranded wire of a stainless steel wire.
  5. 補強線がポリアミド樹脂繊維又はポリアミド樹脂繊維の撚線であることを特徴とする請求項1から3までのいずれか記載の先行手摺枠。   The preceding handrail frame according to any one of claims 1 to 3, wherein the reinforcing wire is polyamide resin fiber or a twisted wire of polyamide resin fiber.
JP2003323664A 2003-09-16 2003-09-16 Reinforced handrail frame Expired - Fee Related JP4052466B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2475117A (en) * 2009-11-03 2011-05-11 Youngman Group Ltd Advanced guard rail

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4567637B2 (en) * 2006-07-10 2010-10-20 ダイキン工業株式会社 Air conditioning controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2475117A (en) * 2009-11-03 2011-05-11 Youngman Group Ltd Advanced guard rail
GB2475117B (en) * 2009-11-03 2011-11-23 Youngman Group Ltd An advanced guard rail

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