JP6913419B1

JP6913419B1 - Method for manufacturing beam reinforcing bar assembly support and beam reinforcing bar assembly support

Info

Publication number: JP6913419B1
Application number: JP2021055109A
Authority: JP
Inventors: 継法清水田
Original assignee: 株式会社大成鋼業
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-08-04
Anticipated expiration: 2041-03-29
Also published as: JP2022152364A

Abstract

【課題】クレーン移動に適しており、高さ調整や結束を容易にした梁鉄筋組立用支持具および梁鉄筋組立用支持具の製造方法を提供することを目的とする。【解決手段】梁鉄筋組立用支持具は、棒材を折り曲げることで形成された足部および胴体部を含み、上記足部は、上記胴体部の一端部に形成されており、上記足部および胴体部の少なくとも一部を構成する上記棒材が輪を形成することで輪状部を区画している。【選択図】図２PROBLEM TO BE SOLVED: To provide a support for assembling a beam reinforcing bar and a method for manufacturing a support for assembling a beam reinforcing bar, which is suitable for moving a crane and facilitates height adjustment and bundling. A support for assembling a beam reinforcing bar includes a foot portion and a body portion formed by bending a bar member, and the foot portion is formed at one end of the body portion, and the foot portion and the body portion are formed. The bar members forming at least a part of the body portion form a ring to partition the ring-shaped portion. [Selection diagram] Fig. 2

Description

本発明は、梁鉄筋組立用支持具および梁鉄筋組立用支持具の製造方法に関する。 The present invention relates to a beam reinforcing bar assembling support and a method for manufacturing a beam reinforcing bar assembling support.

鉄筋で梁を組む梁配筋の工程では、主筋を配置し、配置された主筋と直交する方向にせん断筋（肋筋）を巻く作業を行うために、梁主筋を床面よりも高い位置に固定して行う必要がある。この際、主筋を高い位置に支持する装置として、パイプ馬が長年に渡り使用され続けている。そして、梁配筋および結束が完了すると、パイプ馬から鉄筋を外して、指定場所に落とし込む所謂「梁落とし」の工程へと進む。 In the process of arranging beams by assembling beams with reinforcing bars, the beam main bars are placed higher than the floor surface in order to place the main bars and wind the shear bars (ribs) in the direction orthogonal to the placed main bars. It needs to be fixed. At this time, a pipe horse has been used for many years as a device for supporting the main bar at a high position. Then, when the beam arrangement and binding are completed, the reinforcing bar is removed from the pipe horse, and the process proceeds to a so-called "beam drop" process in which the reinforcing bar is dropped into a designated place.

パイプ馬は、一般的には、金属製のパイプ（鉄パイプ）からなる４本の脚と鉄筋を支持する面を形成する平行に配置された２本のパイプとを組み合わせることで形成されている。パイプ馬の脚は、４０〜５０ｃｍ程度であり、更に支持用の２本のパイプも脚同様に４０〜４５ｃｍ程度である。 Pipe horses are generally formed by combining four legs of metal pipes (iron pipes) with two parallel pipes that form a surface that supports the rebar. .. The legs of the pipe horse are about 40 to 50 cm, and the two supporting pipes are also about 40 to 45 cm like the legs.

このパイプ馬は、パイプ馬の所有者と、パイプ馬を借用する借用者（費用負担者）と、実際にパイプ馬を使用する職人とが異なるため、改良がされにくい装置であるという背景がある。例えば、特許文献１には、４本の脚の長さを変更可能とすることで、異なる高さで鉄筋（梁鉄筋）を支持できるパイプ馬が開示されている。この改良点以外は、従来のパイプ馬と何ら変わりはない。 This pipe horse has a background that it is difficult to improve because the owner of the pipe horse, the borrower who borrows the pipe horse (cost bearer), and the craftsman who actually uses the pipe horse are different. .. For example, Patent Document 1 discloses a pipe horse capable of supporting reinforcing bars (beam reinforcing bars) at different heights by making it possible to change the lengths of the four legs. Other than this improvement, it is no different from a conventional pipe horse.

特開特開２０１５−２１８５５０号公報JP-A-2015-218550

パイプ馬は、他の階層で梁配筋を実施する際に移動する必要がある。移動する際には、複数のパイプ馬を重ねてワイヤーを用いて保持することでクレーン移動される。 Pipe horses need to move when performing beam reinforcement at other levels. When moving, the crane is moved by stacking a plurality of pipe horses and holding them with wires.

しかしながら、特許文献１に開示されているような従来のパイプ馬は、クレーン移動されることを考慮された設計になっておらず、クレーン移動の効率も悪く、クレーン移動中に落下する事故が起こることもある。 However, the conventional pipe horse as disclosed in Patent Document 1 is not designed in consideration of being moved by a crane, the efficiency of moving the crane is low, and an accident of falling during the movement of the crane occurs. Sometimes.

また、特許文献１に開示されているような従来のパイプ馬は、嵩張るため、他の階層にて作業をするまでの期間は施工箇所以外の現場敷地内に保管する際に、大きな保管場所の確保が現場敷地内に必要になる。この確保のために工数が余分にかかることもある。置き場の確保ができない狭小現場においては、使用前後に都度、所有者への借用および返却をしなければならないため、輸送コストが更にかかる。 Further, since the conventional pipe horse as disclosed in Patent Document 1 is bulky, when it is stored in the site site other than the construction site until the work is performed on another layer, it is a large storage place. It is necessary to secure it on the site site. Extra man-hours may be required to secure this. In a small site where a storage space cannot be secured, the transportation cost is further increased because the owner must borrow and return the product before and after each use.

更に、特許文献１に開示されているパイプ馬では、脚の長さを変更できるものの、パイプ馬に鉄筋を結束する工程が必ず必要になる。また、鉄筋を低い位置で支持したい場合には、番線などを用いて高さの調整が必要である。 Further, in the pipe horse disclosed in Patent Document 1, although the length of the leg can be changed, a step of binding the reinforcing bar to the pipe horse is always required. Further, when it is desired to support the reinforcing bar at a low position, it is necessary to adjust the height by using a number wire or the like.

そこで、本発明は、クレーン移動に適しており、高さ調整や結束を容易にした梁鉄筋組立用支持具および梁鉄筋組立用支持具の製造方法を提供することを目的とする。 Therefore, an object of the present invention is to provide a beam reinforcing bar assembling support and a method for manufacturing a beam reinforcing bar assembling support, which are suitable for moving a crane and facilitate height adjustment and bundling.

（１）本発明の第１態様は、棒材を折り曲げることで形成された足部および胴体部を含み、上記足部は、上記胴体部の一端部に形成されており、上記足部および胴体部の少なくとも一部を構成する上記棒材が輪を形成することで輪状部を区画している、ことを特徴とする梁鉄筋組立用支持具に関する。この構成によると、胴体部および足部の少なくとも一部が輪状部を構成するため、当該輪状部にワイヤーを通すことができ、クレーン移動性が高まる。また、輪状部にワイヤーを通すことで、確実に梁鉄筋組立用支持具を保持できるため、落下の可能性を防ぐことが可能である。 (1) The first aspect of the present invention includes a foot portion and a body portion formed by bending a bar member, and the foot portion is formed at one end of the body portion, and the foot portion and the body portion are formed. The present invention relates to a support for assembling a beam reinforcing bar, characterized in that the rod members forming at least a part of the portion form a ring to partition the ring-shaped portion. According to this configuration, since at least a part of the body portion and the foot portion constitutes the ring-shaped portion, the wire can be passed through the ring-shaped portion, and the crane mobility is enhanced. Further, by passing the wire through the ring-shaped portion, the support for assembling the beam reinforcing bar can be reliably held, so that the possibility of falling can be prevented.

（２）上記（１）において、上記胴体部は、面を構成するように形成されていてもよく、
上記面の両面の厚さ方向のそれぞれに上記足部が形成されていてもよく、上記足部および上記胴体部の接続部は、略直角をなしていてもよい。この構成によると、胴体部が面状に構成されているため、複数の梁鉄筋組立用支持具を重ねて移動したり、保管したりできる。また、面同士の接続部も直角であり、重ねた際に嵩張らない。 (2) In the above (1), the body portion may be formed so as to form a surface.
The foot portion may be formed on each of the thickness directions of both sides of the surface, and the connecting portion between the foot portion and the body portion may be formed at a substantially right angle. According to this configuration, since the body portion is configured in a planar shape, a plurality of beam reinforcing bar assembly supports can be moved and stored in an overlapping manner. In addition, the connecting portions between the surfaces are also at right angles, so that they are not bulky when stacked.

（３）上記（１）または（２）において、上記胴体部は、梁鉄筋を支持する複数段の支持部を形成していてもよく、上記輪状部は、上記複数段の支持部を形成することによって区画されていてもよい。この構成によると、複数の支持部によって、梁鉄筋を支持できるため、高さ調整が不要となる。また、従来のように番線を用いた高さ調整も不要となるため、コストおよび作業時間を削減できる。 (3) In the above (1) or (2), the body portion may form a plurality of stages of support portions for supporting the beam reinforcing bars, and the ring-shaped portion forms the above-mentioned plurality of stages of support portions. It may be partitioned by. According to this configuration, the beam reinforcing bar can be supported by the plurality of support portions, so that height adjustment is not required. In addition, since it is not necessary to adjust the height using the number line as in the conventional case, the cost and the working time can be reduced.

（４）上記（１）〜（３）のいずれかにおいて、上記輪状部は、複数の上記梁鉄筋組立用支持具の上記胴体部が上記胴体部の厚さ方向に重ねられたときに、複数の上記梁鉄筋組立用支持具のそれぞれの上記輪状部が上記厚さ方向に重なる位置に形成されていてもよい。この構成によると、複数の梁鉄筋組立用支持具を重ねた場合に異なる複数の梁鉄筋組立用支持具の輪状部がそれぞれ重なるため、複数の輪状部にまとめてワイヤーを通すことが可能となる。 (4) In any of the above (1) to (3), the plurality of ring-shaped portions are formed when the body portions of the plurality of beam reinforcing bar assembly supports are overlapped in the thickness direction of the body portions. The ring-shaped portions of the beam reinforcing bar assembly support tools may be formed at positions where they overlap in the thickness direction. According to this configuration, when a plurality of beam reinforcing bar assembling supports are stacked, different ring-shaped portions of the beam reinforcing bar assembling support are overlapped with each other, so that the wire can be passed through the plurality of ring-shaped portions at once. ..

（５）上記（４）において、上記輪状部は、複数の上記梁鉄筋組立用支持具が上記厚さ方向に重ねられたときに、１つの上記梁鉄筋組立用支持具の上記一端部と他の上記梁鉄筋組立用支持具の上記一端部とは逆側の他端部とが近傍に位置するように重ねられる場合であっても、複数の上記梁鉄筋組立用支持具のそれぞれの上記輪状部が上記厚さ方向に重なる位置に形成されていてもよい。この構成によると、複数の梁鉄筋組立用支持具を互い違いに重ねた場合に異なる複数の梁鉄筋組立用支持具の輪状部がそれぞれ重なるため、複数の輪状部にまとめてワイヤーを通すことが可能となる。また、複数の梁鉄筋組立用支持具を互い違いに重ねることで、重心を梁鉄筋組立用支持具の中心に近い位置に持たせることができる。 (5) In the above (4), the ring-shaped portion is the one end portion and the other of the beam reinforcing bar assembling support when the plurality of beam reinforcing bar assembling supports are stacked in the thickness direction. Even when the other end of the beam reinforcing bar assembly support on the opposite side of the one end is overlapped so as to be located close to each other, each of the plurality of beam reinforcing bar assembly supports has a ring shape. The portions may be formed at positions where they overlap in the thickness direction. According to this configuration, when a plurality of beam reinforcing bar assembly supports are stacked alternately, the ring-shaped portions of the plurality of beam reinforcing bar assembly supports are overlapped with each other, so that the wire can be passed through the plurality of ring-shaped portions at once. It becomes. Further, by alternately stacking a plurality of beam reinforcing bar assembling supports, the center of gravity can be held at a position close to the center of the beam reinforcing bar assembling support.

（６）本発明の第２態様は、複数の棒材を折り曲げることで複数の胴体を形成する工程と、上記複数の棒材を更に折り曲げることで複数の足を形成する工程と、上記複数の棒材を溶接する工程と、を含む梁鉄筋組立用支持具の製造方法に関する。上記溶接する工程では、上記複数の胴体から胴体部を形成し、上記溶接する工程では、上記複数の足から足部を形成し、上記溶接する工程では、上記足部および胴体部の少なくとも一部を構成する上記複数の棒材によって輪を形成することで輪状部を区画する。この構成によると、胴体部および足部の少なくとも一部が輪状部を構成するため、当該輪状部にワイヤーを通すことができ、クレーン移動性が高まる。また、輪状部にワイヤーを通すことで、確実に梁鉄筋組立用支持具を保持できるため、落下の可能性を防ぐことが可能である。 (6) A second aspect of the present invention includes a step of forming a plurality of bodies by bending a plurality of bar members, a step of forming a plurality of legs by further bending the plurality of bar members, and the plurality of steps. The present invention relates to a process of welding a bar material and a method of manufacturing a support for assembling a beam reinforcing bar including. In the welding step, a body portion is formed from the plurality of bodies, in the welding step, a foot portion is formed from the plurality of feet, and in the welding step, at least a part of the foot portion and the body portion. The ring-shaped portion is partitioned by forming a ring from the plurality of rods constituting the above. According to this configuration, since at least a part of the body portion and the foot portion constitutes the ring-shaped portion, the wire can be passed through the ring-shaped portion, and the crane mobility is enhanced. Further, by passing the wire through the ring-shaped portion, the support for assembling the beam reinforcing bar can be reliably held, so that the possibility of falling can be prevented.

本発明によると、クレーン移動に適しており、高さ調整や結束を容易にした梁鉄筋組立用支持具および梁鉄筋組立用支持具の製造方法を提供することができる。より具体的には、本発明によると、胴体部および足部の少なくとも一部が輪状部を構成するため、当該輪状部にワイヤーを通すことでクレーン移動性を高めることができる。また、輪状部にワイヤーを通すことで、確実に梁鉄筋組立用支持具を保持できるため、落下の可能性を防ぐことが可能となる。 According to the present invention, it is possible to provide a support for assembling a beam reinforcing bar and a method for manufacturing a support for assembling a beam reinforcing bar, which are suitable for moving a crane and facilitate height adjustment and bundling. More specifically, according to the present invention, since at least a part of the body portion and the foot portion constitutes a ring-shaped portion, the crane mobility can be improved by passing a wire through the ring-shaped portion. Further, by passing the wire through the ring-shaped portion, the support for assembling the beam reinforcing bar can be reliably held, so that the possibility of falling can be prevented.

図１は、梁鉄筋組立用支持具の全体を示す斜視図である。FIG. 1 is a perspective view showing the entire support for assembling the beam reinforcing bar. 図２は、梁鉄筋組立用支持具の前面図である。FIG. 2 is a front view of the beam reinforcing bar assembly support. 図３は、複数の梁鉄筋組立用支持具が重ねられた状態を模式的に示した図である。FIG. 3 is a diagram schematically showing a state in which a plurality of beam reinforcing bar assembly supports are stacked. 図４は、複数の梁鉄筋組立用支持具が異なる方向に重ねられた状態を模式的に示した図である。FIG. 4 is a diagram schematically showing a state in which a plurality of beam reinforcing bar assembly supports are stacked in different directions. 図５は、梁鉄筋組立用支持具の製造方法を模式的に示す図である。FIG. 5 is a diagram schematically showing a method of manufacturing a support for assembling a beam reinforcing bar.

以下、本開示の一側面に係る梁鉄筋組立用支持具および梁鉄筋組立用支持具の製造方法について図を参照しつつ説明する。但し、本開示の技術的範囲はそれらの実施の形態に限定されず、特許請求の範囲に記載された発明とその均等物におよぶ点に留意されたい。
（梁鉄筋組立用支持具１の構造） Hereinafter, a beam reinforcing bar assembling support and a method for manufacturing the beam reinforcing bar assembling support according to one aspect of the present disclosure will be described with reference to the drawings. However, it should be noted that the technical scope of the present disclosure is not limited to those embodiments, but extends to the inventions described in the claims and their equivalents.
(Structure of support 1 for beam reinforcing bar assembly)

図１は、梁鉄筋組立用支持具１の全体を示す斜視図である。図の通り、梁鉄筋組立用支持具１は、主部材となる第１鉄筋ＴＫ１、副部材となる第２鉄筋ＴＫ２、補部材となる第３鉄筋ＴＫ３からなる足部２および胴体部３を有する。 FIG. 1 is a perspective view showing the entire support tool 1 for assembling the beam reinforcing bar. As shown in the figure, the beam reinforcing bar assembly support 1 has a foot portion 2 and a body portion 3 composed of a first reinforcing bar TK1 as a main member, a second reinforcing bar TK2 as a secondary member, and a third reinforcing bar TK3 as an auxiliary member. ..

足部２は、使用時に配置される床面に設置され、４本の足２１からなる。足部２は、胴体部３の一端部である下端３Ａ側に形成されている。また、脚２１は、胴体部３の裏表両面の厚さ方向に２本ずつ延出している。すなわち、足部２および胴体部３のなす角は、略直角である。更に、同方向に延出する２本の足２１は、それぞれ平行であり、互いに離間している。 The foot portion 2 is installed on the floor surface arranged at the time of use, and is composed of four feet 21. The foot portion 2 is formed on the lower end 3A side, which is one end portion of the body portion 3. Further, two legs 21 extend in the thickness direction of both the front and back surfaces of the body portion 3. That is, the angles formed by the foot portion 2 and the body portion 3 are substantially right angles. Further, the two legs 21 extending in the same direction are parallel to each other and separated from each other.

図２は、梁鉄筋組立用支持具１の前面図である。図の通り、胴体部３は、縦長形状を有し、一端部である下端３Ａ側が下側であり、他端部である上端３Ｂ側が上側である。下端３Ａには、鉄筋は存在せず、上端３Ｂは、梁鉄筋を支持するための支持部３１を形成する鉄筋である。また、胴体部３は、面を構成するように形成されており、下端３Ａおよび上端３Ｂの左右端のそれぞれが接続されており、左右端３Ｃを形成している。そして、上端３Ｂ、下端３Ａ、および左右端３Ｃが略長方形をなしている。 FIG. 2 is a front view of the beam reinforcing bar assembly support 1. As shown in the figure, the body portion 3 has a vertically long shape, and the lower end 3A side, which is one end portion, is the lower side, and the upper end 3B side, which is the other end portion, is the upper side. There is no reinforcing bar at the lower end 3A, and the upper end 3B is a reinforcing bar forming a support portion 31 for supporting the beam reinforcing bar. Further, the body portion 3 is formed so as to form a surface, and the left and right ends of the lower end 3A and the upper end 3B are connected to each other to form the left and right ends 3C. The upper end 3B, the lower end 3A, and the left and right ends 3C form a substantially rectangular shape.

梁鉄筋組立用支持具１を構成する足部２および胴体部３は、鉄筋などの金属製の棒材を折り曲げることで形成されているが、材質は、鉄に限定されず、梁鉄筋を支持できる強度があれば、鉄製である必要はない。また、材質は、金属にも限定されず、同等の強度や形状が得られるのであれば、金属以外でもよい。本実施形態では、ＪＩＳ規格のＳＤ２９５またはＳＤ３４５に規定されるＤ１３およびＤ１６を用いて製造した梁鉄筋組立用支持具１について述べる。なお、本発明は、これらの鉄筋に限定されず、適切なヤング率や許容応力度を有する材料を選定することができる。本実施形態において、第１鉄筋ＴＫ１には、Ｄ１６が使用され、第２鉄筋ＴＫ２および第３鉄筋ＴＫ３には、Ｄ１３が使用されている。しかし、本発明の鉄筋の直径の組み合わせは、これに限定されず、Ｄ１６のみが使用されてもよいが、軽量化のためには、第１鉄筋ＴＫ１のみにＤ１６を使用するとよい。なお、第１鉄筋ＴＫ１のみにＤ１６が使用されていても、他の鉄筋（第２鉄筋ＴＫ２および第３鉄筋ＴＫ３）が第１鉄筋ＴＫ１に溶接されることで十分な強度が得られる。 The foot portion 2 and the body portion 3 constituting the beam reinforcing bar assembly support 1 are formed by bending a metal bar such as a reinforcing bar, but the material is not limited to iron and supports the beam reinforcing bar. It does not have to be made of iron as long as it is strong enough. Further, the material is not limited to metal, and may be other than metal as long as the same strength and shape can be obtained. In this embodiment, the beam reinforcing bar assembly support 1 manufactured by using D13 and D16 specified in JIS standard SD295 or SD345 will be described. The present invention is not limited to these reinforcing bars, and a material having an appropriate Young's modulus and allowable stress can be selected. In the present embodiment, D16 is used for the first reinforcing bar TK1, and D13 is used for the second reinforcing bar TK2 and the third reinforcing bar TK3. However, the combination of the diameters of the reinforcing bars of the present invention is not limited to this, and only D16 may be used, but in order to reduce the weight, it is preferable to use D16 only for the first reinforcing bar TK1. Even if D16 is used only for the first reinforcing bar TK1, sufficient strength can be obtained by welding the other reinforcing bars (second reinforcing bar TK2 and third reinforcing bar TK3) to the first reinforcing bar TK1.

また、使用される鉄筋は、異形棒鋼が使用されている。特徴として、鉄筋の材自体にリブおよび節を有し、このリブおよび節の少なくとも一方によって梁鉄筋組立用支持具１の使用時の接地面とのずれや梁鉄筋を支持するパイプや木材などの転がりを抑制することができる。また、鉄筋は流通量も多く入手も容易であるため、材料費や入手の手間を抑えることができる。 In addition, deformed steel bars are used as the reinforcing bars. Characteristically, the reinforcing bar material itself has ribs and knots, and at least one of the ribs and knots causes a deviation from the ground contact surface when the beam reinforcing bar assembly support 1 is used, and a pipe or wood that supports the beam reinforcing bar. Rolling can be suppressed. In addition, since the reinforcing bars have a large distribution volume and are easily available, the material cost and the labor for obtaining the reinforcing bars can be reduced.

胴体部３は、複数段の支持部３１を有する。複数の支持部３１は、上から順に第１支持部３１Ａ、第２支持部３１Ｂ、第３支持部３１Ｃ、第４支持部３１Ｄである。支持部３１は、梁鉄筋を支持するために、水平に本明細書では、これらの支持部３１を区別する場合には、３１Ａ〜３１Ｄを用いて説明するが、まとめて説明する場合には、３１と記載する。第１支持部３１Ａは、第１鉄筋ＴＫ１からなり、第２支持部３１Ｂおよび第４支持部３１Ｄは、第２鉄筋ＴＫ２からなり、第３支持部３１Ｃは、第３鉄筋ＴＫ３からなる。最上段は、大型の梁鉄筋の配筋に使用されるため、強度が求められることから、第１支持部３１Ａは、強度が大きい第１鉄筋ＴＫ１からなることが好ましいが、他の支持部３１Ｂ、３１Ｃ、３１Ｄは、第２鉄筋ＴＫ２および第３鉄筋ＴＫ３のいずれからなっていてもよい。支持部３１の段数は、後述する輪状部Ｒを足部２および胴体部３によって形成できるのであれば、１段だけでもよく、本実施形態の４段よりも多くてもよい。また、使用する鉄筋の本数も３本に限定されず、適宜好ましい数を選択することができる。 The body portion 3 has a plurality of stages of support portions 31. The plurality of support portions 31 are a first support portion 31A, a second support portion 31B, a third support portion 31C, and a fourth support portion 31D in this order from the top. In order to support the beam reinforcing bar, the support portion 31 will be described horizontally in the present specification using 31A to 31D when distinguishing these support portions 31, but when they are collectively described, they will be described. It is described as 31. The first support portion 31A is composed of the first reinforcing bar TK1, the second support portion 31B and the fourth support portion 31D are composed of the second reinforcing bar TK2, and the third support portion 31C is composed of the third reinforcing bar TK3. Since the uppermost stage is used for arranging large beam reinforcing bars, strength is required. Therefore, the first support portion 31A is preferably made of the first reinforcing bar TK1 having high strength, but the other support portion 31B. , 31C, 31D may be composed of either the second reinforcing bar TK2 or the third reinforcing bar TK3. The number of steps of the support portion 31 may be only one step or more than the four steps of the present embodiment as long as the ring-shaped portion R described later can be formed by the foot portion 2 and the body portion 3. Further, the number of reinforcing bars to be used is not limited to three, and a preferable number can be appropriately selected.

複数段の支持部３１を胴体部３に形成することによって輪状部Ｒが区画される。本実施形態では、３つの輪状部Ｒが支持部３１によって区画されている。第１支持部３１Ａ、第２支持部３１Ｂ、および両側の左右端３Ｃによって区画された略四角形の輪が第１輪状部Ｒ１である。第２支持部３１Ｂ、第３支持部３１Ｃ、および両側の左右端３Ｃによって区画された略四角形の輪が第２輪状部Ｒ２である。第３支持部３１Ｃ、第４支持部３１Ｄ、および両側の左右端３Ｃによって区画された略四角形の輪が第３輪状部Ｒ３である。本明細書では、これらの輪状部Ｒを区別する場合には、Ｒ１〜Ｒ３を用いて説明するが、まとめて説明する場合には、Ｒと記載する。本発明は、少なくとも１つの輪状部Ｒが区画されていればよく、３つの輪状部Ｒが区画されている必要はない。また、本実施形態では、胴体部３に輪状部Ｒが区画される例を説明しているが、輪状部Ｒは、足部２および胴体部３の少なくとも一部を構成する鉄筋ＴＫ１〜ＴＫ３が輪を形成することで輪状部Ｒを区画していればよい。 The ring-shaped portion R is partitioned by forming the support portion 31 of a plurality of stages on the body portion 3. In the present embodiment, the three ring-shaped portions R are partitioned by the support portion 31. The first ring-shaped portion R1 is a substantially quadrangular ring partitioned by the first support portion 31A, the second support portion 31B, and the left and right ends 3C on both sides. The second ring-shaped portion R2 is a substantially quadrangular ring partitioned by the second support portion 31B, the third support portion 31C, and the left and right ends 3C on both sides. The substantially quadrangular ring defined by the third support portion 31C, the fourth support portion 31D, and the left and right end 3Cs on both sides is the third ring-shaped portion R3. In the present specification, when these ring-shaped portions R are distinguished, they will be described with reference to R1 to R3, but when they are collectively described, they will be described as R. In the present invention, it is sufficient that at least one ring-shaped portion R is partitioned, and it is not necessary that the three ring-shaped portions R are partitioned. Further, in the present embodiment, an example in which the ring-shaped portion R is partitioned in the body portion 3 is described, but in the ring-shaped portion R, the reinforcing bars TK1 to TK3 forming at least a part of the foot portion 2 and the body portion 3 are provided. The ring-shaped portion R may be partitioned by forming a ring.

なお、胴体部３に区画される複数の輪状部Ｒのうち少なくとも第２輪状部Ｒ２が胴体部３に区画されていれば、本発明の目的は達成できる。すなわち、梁鉄筋組立用支持具１をクレーン移動する際に、重心に一番近い輪状部Ｒである第２輪状部Ｒ２に玉掛ワイヤーを通すため、複数の輪状部Ｒのうち第２輪状部Ｒ２は必須である。 The object of the present invention can be achieved as long as at least the second ring-shaped portion R2 of the plurality of ring-shaped portions R partitioned by the body portion 3 is partitioned by the body portion 3. That is, when the beam reinforcing bar assembly support 1 is moved by a crane, the sling wire is passed through the second ring-shaped portion R2 which is the ring-shaped portion R closest to the center of gravity. Is mandatory.

梁鉄筋組立用支持具１は、梁配筋が完了して、梁落としが完了すると、次の階層に移動されて、あらたにその階層での梁配筋に使用される。梁鉄筋組立用支持具１は、玉掛ワイヤーを使用して、クレーンによって移動される。本発明は、この移動時の安全性を大きく上げたことに特徴がある。 When the beam reinforcement is completed and the beam dropping is completed, the beam reinforcing bar assembly support 1 is moved to the next layer and newly used for the beam reinforcement in that layer. The beam reinforcing bar assembly support 1 is moved by a crane using a sling wire. The present invention is characterized in that the safety during this movement is greatly improved.

本発明の梁鉄筋組立用支持具１には、少なくとも１つの輪状部Ｒが区画されているため、この輪状部Ｒに玉掛ワイヤーを通すことができる。そのため、梁鉄筋組立用支持具１の移動中に玉掛ワイヤーが梁鉄筋組立用支持具１（輪状部Ｒ）から外れることはない。このため、クレーン移動中に梁鉄筋組立用支持具１が落下することを略皆無にすることができる。 Since at least one ring-shaped portion R is partitioned in the beam reinforcing bar assembly support 1 of the present invention, the sling wire can be passed through the ring-shaped portion R. Therefore, the sling wire does not come off from the beam reinforcing bar assembling support 1 (ring-shaped portion R) while the beam reinforcing bar assembling support 1 is moving. Therefore, it is possible to substantially eliminate the drop of the beam reinforcing bar assembly support 1 while the crane is moving.

図３は、複数の梁鉄筋組立用支持具１が重ねられた状態を模式的に示した図である。図の通り、輪状部Ｒは、複数の梁鉄筋組立用支持具１の胴体部３を胴体部３の厚さ方向（積層方向）に重ねられた（積層された）ときに、それぞれの梁鉄筋組立用支持具１に区画されている輪状部Ｒが厚さ方向に重なる位置に形成されている。なお、図の例では、梁鉄筋組立用支持具１が重ねられる際に、複数の梁鉄筋組立用支持具１の胴体部３の一端部同士が胴体部３の厚さ方向に重なっている。同様に、胴体部３の他端部同士も胴体部３の厚さ方向に重なっている。 FIG. 3 is a diagram schematically showing a state in which a plurality of beam reinforcing bar assembly supports 1 are stacked. As shown in the figure, the ring-shaped portion R has the respective beam reinforcing bars when the body portions 3 of the plurality of beam reinforcing bar assembly supports 1 are stacked (laminated) in the thickness direction (stacking direction) of the body portions 3. The ring-shaped portions R partitioned by the assembly support 1 are formed at positions where they overlap in the thickness direction. In the example of the figure, when the beam reinforcing bar assembling support 1 is stacked, one ends of the body portions 3 of the plurality of beam reinforcing bar assembling supports 1 overlap each other in the thickness direction of the body portion 3. Similarly, the other ends of the body portion 3 also overlap each other in the thickness direction of the body portion 3.

通常、梁鉄筋組立用支持具１の移動は、複数の梁鉄筋組立用支持具１をまとめてクレーンで行う。そのため、輪状部Ｒは、胴体部３の厚さ方向に重ねられたときに、輪状部Ｒが厚さ方向に重なることで玉掛ワイヤーを容易に複数の梁鉄筋組立用支持具１の輪状部Ｒに通すことができる。 Usually, the beam reinforcing bar assembling support 1 is moved by a crane together with a plurality of beam reinforcing bar assembling supports 1. Therefore, when the ring-shaped portion R is overlapped in the thickness direction of the body portion 3, the ring-shaped portion R overlaps in the thickness direction, so that the sling wire can be easily attached to the ring-shaped portion R of the plurality of beam reinforcing bar assembly supports 1. Can be passed through.

本実施形態のように第２輪状部Ｒ２の両側（上下方向）に第１輪状部Ｒ１および第３輪状部Ｒ３を区画することで、複数の梁鉄筋組立用支持具１が胴体部３の厚さ方向に積層された場合に、複数の梁鉄筋組立用支持具１が面方向の上下方向に多少ずれていたとしても玉掛ワイヤーが確実に輪状部Ｒを通る。すなわち、玉掛ワイヤーを第２輪状部Ｒ２に通す際に、複数の梁鉄筋組立用支持具１が面方向の上下方向に多少ずれていた場合に、第２輪状部Ｒ２に玉掛ワイヤーが通らなかったとしても、玉掛ワイヤーが第１輪状部Ｒ１または第３輪状部Ｒ３に通る。そのため、第２輪状部Ｒ２のみが胴体部３に区画されている場合と比較して、更に安全性を高めることができる。 By partitioning the first ring-shaped portion R1 and the third ring-shaped portion R3 on both sides (vertical direction) of the second ring-shaped portion R2 as in the present embodiment, the plurality of beam reinforcing bar assembly supports 1 have the thickness of the body portion 3. When laminated in the longitudinal direction, the sling wire surely passes through the ring-shaped portion R even if the plurality of beam reinforcing bar assembly supports 1 are slightly displaced in the vertical direction in the surface direction. That is, when the sling wire is passed through the second ring-shaped portion R2, if the plurality of beam reinforcing bar assembly supports 1 are slightly displaced in the vertical direction in the plane direction, the sling wire does not pass through the second ring-shaped portion R2. Even so, the sling wire passes through the first ring-shaped portion R1 or the third ring-shaped portion R3. Therefore, the safety can be further improved as compared with the case where only the second ring-shaped portion R2 is partitioned by the body portion 3.

また、輪状部Ｒに玉掛ワイヤーを通す場合には、梁鉄筋組立用支持具１を倒して（上端３Ｂが床面に接地する）行う。これは、クレーン移動時に梁鉄筋組立用支持具１を倒して移動するためである。輪状部Ｒに玉掛ワイヤーを通す際に、胴体部３の面が全て床面に接していると、ワイヤーを通すことが困難となるが、足部２が形成されていることによって、胴体部３の面が床面よりも高い位置に保たれるため、ワイヤーを通すことが容易となる。 Further, when passing the sling wire through the ring-shaped portion R, the beam reinforcing bar assembly support 1 is tilted down (the upper end 3B is in contact with the floor surface). This is because the beam reinforcing bar assembly support 1 is tilted and moved when the crane is moved. When passing the sling wire through the ring-shaped portion R, if all the surfaces of the body portion 3 are in contact with the floor surface, it is difficult to pass the wire. However, due to the formation of the foot portion 2, the body portion 3 is formed. The surface of the wire is kept higher than the floor surface, which makes it easier to pass the wire.

図４は、複数の梁鉄筋組立用支持具１が異なる方向に重ねられた状態を模式的に示した図である。図３の例では、足部２が胴体部３の下端３Ａに形成されているため、梁鉄筋組立用支持具１の重心が下端３Ａおよび上端３Ｂのうち下端３Ａに寄ってしまう。そのため、実際に複数の梁鉄筋組立用支持具１を重ねて移動する場合には、図のように胴体部３の一端部および他端部がそれぞれ胴体部３の厚さ方向に重なるようにしてクレーン移動される。すなわち、梁鉄筋組立用支持具１の輪状部Ｒは、複数の梁鉄筋組立用支持具１が胴体部３の厚さ方向に重ねられたときに、１つの梁鉄筋組立用支持具１の一端部と他の梁鉄筋組立用支持具１の他端部とが近傍に位置するように重ねられる場合であっても、それぞれの輪状部Ｒが胴体部３の厚さ方向に重なる位置に形成されている。このように、梁鉄筋組立用支持具１の胴体部３の一端部および他端部が互い違いになるように、胴体部３の厚さ方向に重ねられた場合であっても、複数の梁鉄筋組立用支持具１の輪状部Ｒが互いに胴体部３の厚さ方向に重なっているため、玉掛ワイヤーを容易に複数の梁鉄筋組立用支持具１の輪状部Ｒに通すことができる。 FIG. 4 is a diagram schematically showing a state in which a plurality of beam reinforcing bar assembly supports 1 are stacked in different directions. In the example of FIG. 3, since the foot portion 2 is formed at the lower end 3A of the body portion 3, the center of gravity of the beam reinforcing bar assembly support 1 is closer to the lower end 3A of the lower end 3A and the upper end 3B. Therefore, when a plurality of beam reinforcing bar assembly supports 1 are actually moved in an overlapping manner, one end and the other end of the body 3 are overlapped in the thickness direction of the body 3 as shown in the figure. The crane is moved. That is, the ring-shaped portion R of the beam reinforcing bar assembling support 1 is one end of one beam reinforcing bar assembling support 1 when a plurality of beam reinforcing bar assembling supports 1 are stacked in the thickness direction of the body portion 3. Even when the portion and the other end of the other beam reinforcing bar assembly support 1 are overlapped so as to be located close to each other, the respective ring-shaped portions R are formed at positions where they overlap in the thickness direction of the body portion 3. ing. In this way, even when the one end and the other end of the body portion 3 of the beam reinforcing bar assembly support 1 are stacked in the thickness direction of the body portion 3 so as to be staggered, a plurality of beam reinforcing bars are stacked. Since the ring-shaped portions R of the assembly support 1 overlap each other in the thickness direction of the body portion 3, the sling wire can be easily passed through the ring-shaped portions R of the plurality of beam reinforcing bar assembly supports 1.

本実施形態では、図４のように複数の梁鉄筋組立用支持具１における第２輪状部Ｒ２が胴体部３の厚さ方向に重なるように区画されており、複数の梁鉄筋組立用支持具１における第１輪状部Ｒ１および第３輪状部Ｒ３がそれぞれ胴体部３の厚さ方向に重なるように区画されている。しかし、本発明は、第２輪状部Ｒ２同士がそれぞれ重なるように胴体部３に区画されていれば、本発明の目的は達成できる。すなわち、胴体部３の一端部および他端部がそれぞれ胴体部３の厚さ方向に重ねられる場合であっても、少なくとも第２輪状部Ｒ２同士が重なるように区画されていればよい。好ましくは、第２輪状部Ｒ２同士の重なりが他の輪状部Ｒ１およびＲ３よりも大きい。 In the present embodiment, as shown in FIG. 4, the second ring-shaped portion R2 of the plurality of beam reinforcing bar assembly supports 1 is partitioned so as to overlap in the thickness direction of the body portion 3, and the plurality of beam reinforcing bar assembly supports. The first ring-shaped portion R1 and the third ring-shaped portion R3 in No. 1 are partitioned so as to overlap each other in the thickness direction of the body portion 3. However, the object of the present invention can be achieved if the second ring-shaped portions R2 are partitioned into the body portion 3 so as to overlap each other. That is, even when one end and the other end of the body portion 3 are overlapped in the thickness direction of the body portion 3, at least the second ring-shaped portions R2 may be partitioned so as to overlap each other. Preferably, the overlap between the second ring-shaped portions R2 is larger than that of the other ring-shaped portions R1 and R3.

一方、第２輪状部Ｒ２の両側（上下方向）に第１輪状部Ｒ１および第３輪状部Ｒ３を区画することで、複数の梁鉄筋組立用支持具１が胴体部３の厚さ方向に積層された場合に、複数の梁鉄筋組立用支持具１が面方向の上下方向に多少ずれていたとしても玉掛ワイヤーが確実に輪状部Ｒを通る。すなわち、玉掛ワイヤーを第２輪状部Ｒ２に通す際に、複数の梁鉄筋組立用支持具１が面方向の上下方向に多少ずれていた場合に、第２輪状部Ｒ２に玉掛ワイヤーが通らなかったとしても、玉掛ワイヤーが第１輪状部Ｒ１または第３輪状部Ｒ３に通る。そのため、第２輪状部Ｒ２のみが胴体部３に区画されている場合と比較して、更に安全性を高めることができる。また、第２輪状部Ｒ２に玉掛ワイヤーを通し易くするために、第２輪状部Ｒ２の上下方向の寸法は、他の輪状部Ｒ１、Ｒ３よりも大きくされている。
（梁鉄筋組立用支持具１の製造方法） On the other hand, by partitioning the first ring-shaped portion R1 and the third ring-shaped portion R3 on both sides (vertical direction) of the second ring-shaped portion R2, a plurality of beam reinforcing bar assembly supports 1 are laminated in the thickness direction of the body portion 3. In this case, even if the plurality of beam reinforcing bar assembly supports 1 are slightly displaced in the vertical direction in the surface direction, the sling wire surely passes through the ring-shaped portion R. That is, when the sling wire is passed through the second ring-shaped portion R2, if the plurality of beam reinforcing bar assembly supports 1 are slightly displaced in the vertical direction in the plane direction, the sling wire does not pass through the second ring-shaped portion R2. Even so, the sling wire passes through the first ring-shaped portion R1 or the third ring-shaped portion R3. Therefore, the safety can be further improved as compared with the case where only the second ring-shaped portion R2 is partitioned by the body portion 3. Further, in order to facilitate passing the sling wire through the second ring-shaped portion R2, the vertical dimension of the second ring-shaped portion R2 is made larger than that of the other ring-shaped portions R1 and R3.
(Manufacturing method of support 1 for beam reinforcing bar assembly)

図５は、梁鉄筋組立用支持具１の製造方法を模式的に示す図である。まず、図５Ａのように第１鉄筋ＴＫ１をＵ字型に折り曲げ、第２鉄筋ＴＫ２をＵ字型に折り曲げ、第３鉄筋ＴＫ３をＣ字型に折り曲げることで複数の胴体を形成する。本実施形態では、胴体部３を構成する第１鉄筋ＴＫ１、第２鉄筋ＴＫ２、および第２鉄筋ＴＫ３を便宜上「胴体」と呼ぶ。この際、鉄筋を適切な長さに切断する必要があるが、折り曲げる前に切断してもよく、折り曲げた後に切断してもよい。なお、鉄筋を曲げる方法は、特に限定されず、一般的な鉄筋自動曲げ機を用いることができる。また、曲げ半径も特に限定されず、本実施形態では、３５ｍｍ（鉄筋の中心における）としている。図５Ａは、便宜上、第１鉄筋ＴＫ１、第２鉄筋ＴＫ２、および第３鉄筋ＴＫ３を正面から見た正面図である。 FIG. 5 is a diagram schematically showing a manufacturing method of the beam reinforcing bar assembly support 1. First, as shown in FIG. 5A, the first reinforcing bar TK1 is bent into a U shape, the second reinforcing bar TK2 is bent into a U shape, and the third reinforcing bar TK3 is bent into a C shape to form a plurality of bodies. In the present embodiment, the first reinforcing bar TK1, the second reinforcing bar TK2, and the second reinforcing bar TK3 constituting the body portion 3 are referred to as "body" for convenience. At this time, it is necessary to cut the reinforcing bar to an appropriate length, but it may be cut before bending or after bending. The method of bending the reinforcing bar is not particularly limited, and a general automatic reinforcing bar bending machine can be used. Further, the bending radius is not particularly limited, and in the present embodiment, it is 35 mm (at the center of the reinforcing bar). FIG. 5A is a front view of the first reinforcing bar TK1, the second reinforcing bar TK2, and the third reinforcing bar TK3 as viewed from the front for convenience.

第１鉄筋ＴＫ１は、足部２を除いた長手方向（高さ方向）の寸法（一端部および他端部間）が４５０ｍｍであり、左右端３Ｃの全長となる。左右端３Ｃを構成する第１鉄筋ＴＫ１同士の間の部分の寸法は１２０ｍｍであり、第１支持部３１Ａを構成する。なお、第１支持部３１Ａが胴体部３の上端３Ｂである。第１支持部３１Ａ（上端３Ａ）および左右端３Ｃの間は、略直角に折り曲げられている。これによって、第１鉄筋ＴＫ１に胴体が形成される。なお、本明細書において寸法は、鉄筋の中心を基点に記載しているが、本発明は、記載されている寸法に限定されない。例えば、左右端３Ｃを構成する第１鉄筋ＴＫ１同士の間の部分の寸法は、１００ｍｍ以上、２００ｍｍ以下であってもよい。好ましくは、左右端３Ｃを構成する第１鉄筋ＴＫ１同士の間の部分の寸法は、１２０ｍｍ〜１７０ｍｍ程度が好ましい。更に他の寸法も本発明の範囲を限定するものではない。 The first reinforcing bar TK1 has a dimension (between one end and the other end) in the longitudinal direction (height direction) excluding the foot 2 of 450 mm, which is the total length of the left and right ends 3C. The dimension of the portion between the first reinforcing bars TK1 constituting the left and right ends 3C is 120 mm, and constitutes the first support portion 31A. The first support portion 31A is the upper end 3B of the body portion 3. The area between the first support portion 31A (upper end 3A) and the left and right ends 3C is bent at a substantially right angle. As a result, a body is formed on the first reinforcing bar TK1. Although the dimensions are described in the present specification with the center of the reinforcing bar as the base point, the present invention is not limited to the described dimensions. For example, the dimensions of the portion between the first reinforcing bars TK1 constituting the left and right ends 3C may be 100 mm or more and 200 mm or less. Preferably, the dimension of the portion between the first reinforcing bars TK1 constituting the left and right ends 3C is preferably about 120 mm to 170 mm. Still other dimensions do not limit the scope of the invention.

第２鉄筋ＴＫ２は、足部２を除いた長手方向（高さ方向）の寸法（一端部から第３支持部３１Ｃまで）が２００ｍｍであり、左右端３Ｃの一部を構成する。左右端３Ｃの一部を構成する第２鉄筋ＴＫ２同士の間の部分の寸法は１２０ｍｍであり、第３支持部３１Ｃを構成する。第３支持部３１Ｃおよび左右端３Ｃの間は、略直角に折り曲げられている。これによって、第２鉄筋ＴＫ２に胴体が形成される。しかしながら、本発明の左右端３Ｃを構成する第２鉄筋ＴＫ２同士の間の部分の寸法は、１００ｍｍより広く、２００ｍｍ以下であってもよい。好ましくは、左右端３Ｃを構成する第２鉄筋ＴＫ２同士の間の部分の寸法は、１２０ｍｍ〜１７０ｍｍ程度が好ましい。更に他の寸法も本発明の範囲を限定するものではない。 The second reinforcing bar TK2 has a dimension (from one end to the third support 31C) in the longitudinal direction (height direction) excluding the foot 2 of 200 mm, and constitutes a part of the left and right ends 3C. The dimension of the portion between the second reinforcing bars TK2 that form a part of the left and right ends 3C is 120 mm, and constitutes the third support portion 31C. The portion between the third support portion 31C and the left and right ends 3C is bent at a substantially right angle. As a result, a body is formed on the second reinforcing bar TK2. However, the dimension of the portion between the second reinforcing bars TK2 constituting the left and right end 3C of the present invention may be wider than 100 mm and may be 200 mm or less. Preferably, the dimension of the portion between the second reinforcing bars TK2 constituting the left and right ends 3C is preferably about 120 mm to 170 mm. Still other dimensions do not limit the scope of the invention.

第３鉄筋ＴＫ３は、第１鉄筋ＴＫ１が構成する左右端３Ｃの向き合う方向における内側に固定されるため、第３鉄筋ＴＫ３のＣ字を構成する上下の部分の寸法は、１２０ｍｍよりも第１鉄筋ＴＫ１の直径分短い。また、このＣ字の上下部分が、第２支持部３１Ｂおよび第４支持部３１Ｄを構成する。そして、これらの第２支持部３１Ｂおよび第４支持部３１Ｄ間の寸法が３００ｍｍである。第３鉄筋ＴＫ３の左右端３Ｃの片側には、第２支持部３１Ｂおよび第４支持部３１Ｄの間を接続する部分が構成され、その寸法は３００ｍｍである。そして、第３鉄筋ＴＫ３の左右端３Ｃの他方側には、第２支持部３１Ｂおよび第４支持部３１Ｄを接続しないが、第３鉄筋ＴＫ３の両端部が互いに対向する部分が形成されている。この対向部分は、第２支持部３１Ｂ側および第４支持部３１Ｄ側のそれぞれが１００ｍｍ程度の寸法を有する。これによって、第３鉄筋ＴＫ３に胴体が形成される。なお、この対向部分の寸法は、溶接による強度が得られれば、１００ｍｍよりも短くてもよく、第３鉄筋ＴＫ３がＣ型ではなくＯ型に形成されていてもよい。または、第３鉄筋ＴＫ３は、上下２つの鉄筋から形成されていてもよい。第２支持部３１Ｂと左右端３Ｃとの間、および第４支持部３１Ｄと左右端３Ｃとの間は、略直角に折り曲げられている。同様にＴＫ３の寸法も一例であり、本発明の範囲を限定するものではない。 Since the third reinforcing bar TK3 is fixed inside in the direction in which the left and right ends 3C formed by the first reinforcing bar TK1 face each other, the dimensions of the upper and lower parts forming the C shape of the third reinforcing bar TK3 are larger than 120 mm. It is shorter by the diameter of TK1. Further, the upper and lower portions of the C-shape form the second support portion 31B and the fourth support portion 31D. The dimension between the second support portion 31B and the fourth support portion 31D is 300 mm. On one side of the left and right ends 3C of the third reinforcing bar TK3, a portion connecting between the second support portion 31B and the fourth support portion 31D is formed, and the dimension thereof is 300 mm. Then, on the other side of the left and right ends 3C of the third reinforcing bar TK3, a portion is formed in which both ends of the third reinforcing bar TK3 face each other, although the second support portion 31B and the fourth support portion 31D are not connected. The facing portion has a dimension of about 100 mm on each of the second support portion 31B side and the fourth support portion 31D side. As a result, a body is formed on the third reinforcing bar TK3. The dimension of the facing portion may be shorter than 100 mm as long as the strength by welding is obtained, and the third reinforcing bar TK3 may be formed in an O shape instead of a C shape. Alternatively, the third reinforcing bar TK3 may be formed of two upper and lower reinforcing bars. The space between the second support portion 31B and the left and right ends 3C and the space between the fourth support portion 31D and the left and right ends 3C are bent at substantially right angles. Similarly, the dimensions of TK3 are also examples and do not limit the scope of the present invention.

次に、図５Ｂのように足部２を形成する。本実施形態の梁鉄筋組立用支持具１では、第１鉄筋ＴＫ１および第２鉄筋ＴＫ２に足部２を構成する足２１が形成されている。図の通り、第１鉄筋ＴＫ１のＵ字構造がなす面の厚さ方向の一方にＵ字に折り曲げられた鉄筋の両端部が直角に折り曲げられている。同様に第２鉄筋ＴＫ２のＵ字構造がなす面の厚さ方向の一方にＵ字に折り曲げられた鉄筋の両端部が直角に折り曲げられている。なお、鉄筋を曲げる方法は、特に限定されず、一般的な鉄筋自動曲げ機を用いることができる。また、曲げ半径も特に限定されず、本実施形態では、３５ｍｍとしている。図５Ｂは、便宜上、第１鉄筋ＴＫ１および第２鉄筋ＴＫ２を側面から見た側面図であり、更に第３鉄筋ＴＫ３については、割愛されている。 Next, the foot portion 2 is formed as shown in FIG. 5B. In the beam reinforcing bar assembly support 1 of the present embodiment, the foot 21 constituting the foot portion 2 is formed on the first reinforcing bar TK1 and the second reinforcing bar TK2. As shown in the figure, both ends of the U-shaped reinforcing bar are bent at right angles to one side in the thickness direction of the surface formed by the U-shaped structure of the first reinforcing bar TK1. Similarly, both ends of the U-shaped reinforcing bar are bent at right angles to one side in the thickness direction of the surface formed by the U-shaped structure of the second reinforcing bar TK2. The method of bending the reinforcing bar is not particularly limited, and a general automatic reinforcing bar bending machine can be used. Further, the bending radius is not particularly limited, and in the present embodiment, it is set to 35 mm. FIG. 5B is a side view of the first reinforcing bar TK1 and the second reinforcing bar TK2 as viewed from the side surface for convenience, and the third reinforcing bar TK3 is omitted.

足２１のそれぞれは、１２０ｍｍ程度の長さを有するとよいが、足２１の長さは、梁鉄筋の受ける幅方向のモーメントの大きさなどに応じて適宜選択されてもよい。なお、左右の足２１を形成するために折り曲げられた位置同士を結ぶ仮想線が下端３Ａである。 Each of the legs 21 may have a length of about 120 mm, but the length of the legs 21 may be appropriately selected depending on the magnitude of the moment in the width direction received by the beam reinforcing bar and the like. The lower end 3A is a virtual line connecting the bent positions to form the left and right legs 21.

次に、図５Ｃのように第１鉄筋ＴＫ１および第２鉄筋ＴＫ２を背中合わせに溶接する。すなわち、足部２が延出する方向とは逆側同士を接続する。これによって、４本の足２１が接地面を形成し、梁鉄筋組立用支持具１を垂直に維持可能となる。なお、溶接部分は、第１鉄筋ＴＫ１および第２鉄筋ＴＫ２が触れる部分であるため、下端３Ａから第２支持部３１Ｂまでの２００ｍｍ程度となる。なお、強度が得られるのであれば、この２００ｍｍのうち一部のみが溶接されていてもよい。また、溶接方法も特に限定されるものではなく、一般的なアーク溶接を用いることができる。図５Ｃは、便宜上、第１鉄筋ＴＫ１および第２鉄筋ＴＫ２を側面から見た側面図であり、更に第３鉄筋ＴＫ３については、割愛されている。 Next, as shown in FIG. 5C, the first reinforcing bar TK1 and the second reinforcing bar TK2 are welded back to back. That is, the sides opposite to the direction in which the foot portion 2 extends are connected to each other. As a result, the four legs 21 form a ground contact surface, and the beam reinforcing bar assembly support 1 can be maintained vertically. Since the welded portion is a portion where the first reinforcing bar TK1 and the second reinforcing bar TK2 touch, the welded portion is about 200 mm from the lower end 3A to the second support portion 31B. If strength can be obtained, only a part of this 200 mm may be welded. Further, the welding method is not particularly limited, and general arc welding can be used. FIG. 5C is a side view of the first reinforcing bar TK1 and the second reinforcing bar TK2 as viewed from the side surface for convenience, and the third reinforcing bar TK3 is omitted.

最終的に、図５Ｄのように溶接された第１鉄筋ＴＫ１および第２鉄筋ＴＫ２に第３鉄筋ＴＫ３を溶接する。実際には、第１鉄筋ＴＫ１が構成する左右端３Ｃの向き合う方向における内側に第３鉄筋ＴＫ３は溶接される。第３鉄筋ＴＫ３のＣ字を構成する上下の部分のそれぞれの高さが７０ｍｍおよび３７０ｍｍとなる位置に第３鉄筋ＴＫ３が溶接される。なお、Ｃ字の開口部は、左右端３Ｃのいずれ側に位置していてもよい。図５Ｄでは、右側の左右端３Ｃ側に開口部が位置している。この溶接方法も特に限定されるものではなく、一般的なアーク溶接を用いることができる。第１鉄筋ＴＫ１が構成する左右端３Ｃの向き合う方向における内側に第３鉄筋ＴＫ３は溶接されるため、溶接長を取り易く十分な強度を確保することができる。また、本実施形態では、第３鉄筋ＴＫ３が第１鉄筋ＴＫ１に溶接される構成としたが、第３鉄筋ＴＫ３が第２鉄筋ＴＫ２に溶接されてもよい。また、第３鉄筋ＴＫ３は、複数段の支持部３１を構成する目的および、第１鉄筋ＴＫ１の左右端３Ｃを補強するために設けられているが、第１鉄筋ＴＫ１の強度が第１鉄筋ＴＫ１および第２鉄筋ＴＫ２保てるのであれば、第３鉄筋ＴＫ３の構成は任意である。図５Ｄは、便宜上、完成した梁鉄筋組立用支持具１を正面から見た正面図である。 Finally, the third reinforcing bar TK3 is welded to the first reinforcing bar TK1 and the second reinforcing bar TK2 welded as shown in FIG. 5D. Actually, the third reinforcing bar TK3 is welded to the inside in the facing direction of the left and right end 3Cs formed by the first reinforcing bar TK1. The third reinforcing bar TK3 is welded at positions where the heights of the upper and lower portions constituting the C-shape of the third reinforcing bar TK3 are 70 mm and 370 mm, respectively. The C-shaped opening may be located on either side of the left and right ends 3C. In FIG. 5D, the openings are located on the left and right ends 3C on the right side. This welding method is also not particularly limited, and general arc welding can be used. Since the third reinforcing bar TK3 is welded to the inside of the left and right ends 3C formed by the first reinforcing bar TK1 in the facing direction, it is easy to take a welding length and sufficient strength can be secured. Further, in the present embodiment, the third reinforcing bar TK3 is welded to the first reinforcing bar TK1, but the third reinforcing bar TK3 may be welded to the second reinforcing bar TK2. Further, the third reinforcing bar TK3 is provided for the purpose of forming the support portion 31 of a plurality of stages and for reinforcing the left and right ends 3C of the first reinforcing bar TK1, but the strength of the first reinforcing bar TK1 is the strength of the first reinforcing bar TK1. And the configuration of the third reinforcing bar TK3 is arbitrary as long as the second reinforcing bar TK2 can be maintained. FIG. 5D is a front view of the completed beam reinforcing bar assembly support 1 as viewed from the front for convenience.

すなわち、本発明にかかる梁鉄筋組立用支持具の製造方法は、第１鉄筋ＴＫ１、第２鉄筋ＴＫ２、および第３鉄筋ＴＫ３を折り曲げることで複数の胴体を形成する工程と、第１鉄筋ＴＫ１および第２鉄筋ＴＫ２を更に折り曲げることで複数の足２１を形成する工程と、第１鉄筋ＴＫ１、第２鉄筋ＴＫ２、および第３鉄筋ＴＫ３を溶接する工程と、を含む。溶接する工程では、複数の胴体から胴体部３を形成し、複数の足２１によって足部２を形成し、足部２および胴体部３の少なくとも一部を構成する鉄筋ＴＫ１、ＴＫ２、ＴＫ３が輪を形成することで輪状部Ｒを区画する。
（従来品との比較） That is, the method for manufacturing the support for assembling the beam reinforcing bar according to the present invention includes a step of forming a plurality of bodies by bending the first reinforcing bar TK1, the second reinforcing bar TK2, and the third reinforcing bar TK3, and the first reinforcing bar TK1 and It includes a step of forming a plurality of legs 21 by further bending the second reinforcing bar TK2, and a step of welding the first reinforcing bar TK1, the second reinforcing bar TK2, and the third reinforcing bar TK3. In the welding step, the body portion 3 is formed from a plurality of bodies, the foot portion 2 is formed by the plurality of feet 21, and the reinforcing bars TK1, TK2, and TK3 forming at least a part of the foot portion 2 and the body portion 3 form a ring. The ring-shaped portion R is partitioned by forming the ring-shaped portion R.
(Comparison with conventional products)

本実施形態の梁鉄筋組立用支持具１は、上述の製造方法によって製造した場合に、その重量は約３．３ｋｇ程度であり、従来のパイプ馬の重量は、５．５ｋｇ〜６．０ｋｇ程度である。クレーン移動時には、パイプ馬を１０個程度まとめたものを３セット程度一度に移動するため、重量差は多大となる。 The beam reinforcing bar assembly support 1 of the present embodiment has a weight of about 3.3 kg when manufactured by the above-mentioned manufacturing method, and the weight of a conventional pipe horse is about 5.5 kg to 6.0 kg. Is. When moving a crane, about 10 pipe horses are moved together in 3 sets at a time, so the weight difference becomes large.

また、従来のパイプ馬を直吊りで移動する場合には、玉掛ワイヤーの長さや安全性の面から３０個程度までしか一度にクレーン移動できない。一方、本実施形態の梁鉄筋組立用支持具１であれば、嵩張らないため一度に１５０個程度まで一度にクレーン移動可能である。よって、本実施形態の梁鉄筋組立用支持具１によると、クレーン移動にかかる工数およびクレーンの燃料も削減することができる。 Further, when the conventional pipe horse is moved by direct suspension, only about 30 cranes can be moved at a time from the viewpoint of the length and safety of the sling wire. On the other hand, the beam reinforcing bar assembly support 1 of the present embodiment is not bulky and can move up to about 150 cranes at a time. Therefore, according to the beam reinforcing bar assembly support 1 of the present embodiment, the man-hours required for moving the crane and the fuel of the crane can be reduced.

また、本実施形態の梁鉄筋組立用支持具１や従来のパイプ馬を直接クレーン移動する所謂「直吊り」の場合について記載してきたが、事故防止の観点からメッシュパレットや籠ラックなどに梁鉄筋組立用支持具１や従来のパイプ馬を収容して移動することがある。例えば、１ｍ×１ｍ×１ｍの籠ラックに従来のパイプ馬を収容する場合には、体積の限界により２５個程度しか入らない。一方、本実施形態の梁鉄筋組立用支持具１であれば、１ｍ×１ｍ×１ｍの籠ラックに体積の限界まで入れた場合には１３０個程度入る。これは、本実施形態にかかる梁鉄筋組立用支持具１の構造上、嵩張らないためである。そのため、輸送の面でも本実施形態にかかる梁鉄筋組立用支持具１は、優れている。 Further, although the case of the so-called "direct suspension" in which the support tool 1 for assembling the beam reinforcing bar of the present embodiment or the conventional pipe horse is directly moved by a crane has been described, the beam reinforcing bar is attached to a mesh pallet, a cage rack, or the like from the viewpoint of accident prevention. It may accommodate and move the assembly support 1 and the conventional pipe crane. For example, when a conventional pipe horse is housed in a 1 m × 1 m × 1 m basket rack, only about 25 can be accommodated due to the volume limit. On the other hand, in the case of the beam reinforcing bar assembly support 1 of the present embodiment, about 130 pieces can be inserted in a 1 m × 1 m × 1 m basket rack up to the volume limit. This is because the structure of the beam reinforcing bar assembly support 1 according to the present embodiment is not bulky. Therefore, the beam reinforcing bar assembly support 1 according to the present embodiment is excellent in terms of transportation.

または、本実施形態にかかる梁鉄筋組立用支持具１は、従来のパイプ馬と比較して、嵩張らず軽量であるため、メッシュパレットや籠ラックなどに格納することで、狭小現場であっても、コンクリート打設済みの建築物内での保管ができる。更に、本実施形態にかかる梁鉄筋組立用支持具１は、車輪を有するメッシュパレットや籠ラックなどを使用することで人力にて容易に移動することができる。すなわち、他の階層での作業前後において都度、所有者への借用および返却することを省略できる。よって、工事全体の工程を短くすることができ、コスト削減も可能である。 Alternatively, since the beam reinforcing bar assembly support 1 according to the present embodiment is not bulky and lightweight as compared with the conventional pipe horse, it can be stored in a mesh pallet, a basket rack, or the like, even in a narrow site. , Can be stored in a concrete-cast building. Further, the beam reinforcing bar assembly support 1 according to the present embodiment can be easily moved manually by using a mesh pallet having wheels, a basket rack, or the like. That is, it is possible to omit borrowing and returning to the owner each time before and after work in another layer. Therefore, the entire construction process can be shortened and the cost can be reduced.

従来のパイプ馬では、支持面にパイプや木材を固定するために番線などが必ず必要であったが、本実施形態にかかる梁鉄筋組立用支持具１では、第２支持部３１Ｂ、第３支持部３１Ｃ、および第４支持部３１Ｄは、左右端３Ｃによってパイプや木材のずれを防止できるため、番線などで固定する必要がない。よって、梁配筋の工程を短くすることができ、番線を使用しない分、コスト削減も可能である。 In the conventional pipe horse, a number wire or the like is always required to fix the pipe or wood to the support surface, but in the beam reinforcing bar assembly support tool 1 according to the present embodiment, the second support portion 31B and the third support are provided. Since the left and right ends 3C of the portion 31C and the fourth support portion 31D can prevent the pipe and the wood from slipping, it is not necessary to fix the portion 31C and the fourth support portion 31D with a number wire or the like. Therefore, the beam reinforcement process can be shortened, and the cost can be reduced because the number line is not used.

従来のパイプ馬では、梁鉄筋を支持する高さが高すぎる場合に、番線などを使用して支持面よりも低い位置でパイプや木材を固定していたが、本実施形態にかかる梁鉄筋組立用支持具１では、第２支持部３１Ｂ、第３支持部３１Ｃ、および第４支持部３１Ｄを有するため、番線などを用いて高さを調整する必要がない。よって、梁配筋の工程を短くすることができ、番線を使用しない分、コスト削減も可能である。更に、従来のパイプ馬のように番線に梁鉄筋の荷重がかかる場合と比較して、本実施形態にかかる梁鉄筋組立用支持具１は、第２支持部３１Ｂ、第３支持部３１Ｃ、および第４支持部３１Ｄが梁鉄筋を支持するため、強度不足による梁鉄筋の落下（またはそれに起因する事故）を防ぐことも可能である。 In the conventional pipe horse, when the height for supporting the beam reinforcing bar is too high, the pipe or wood is fixed at a position lower than the support surface by using a number wire or the like. Since the support tool 1 has the second support portion 31B, the third support portion 31C, and the fourth support portion 31D, it is not necessary to adjust the height by using a number wire or the like. Therefore, the beam reinforcement process can be shortened, and the cost can be reduced because the number line is not used. Further, as compared with the case where the load of the beam reinforcing bar is applied to the track as in the conventional pipe horse, the beam reinforcing bar assembling support 1 according to the present embodiment has the second support portion 31B, the third support portion 31C, and the third support portion 31C. Since the fourth support portion 31D supports the beam reinforcing bar, it is possible to prevent the beam reinforcing bar from falling (or an accident caused by it) due to insufficient strength.

当業者は、本発明の精神および範囲から外れることなく、さまざまな変更、置換および修正をこれに加えることが可能であることを理解されたい。
（変形例１） It will be appreciated by those skilled in the art that various changes, substitutions and modifications can be made to this without departing from the spirit and scope of the invention.
(Modification example 1)

本実施形態では、４本の足２１が形成されているが、例えば、胴体部３の厚さ方向において同方向に延出する２本の足２１の延端同士を接続することで構造を強化することも可能である。この場合、足部２が第４支持部３１Ｄと共に輪を形成することになり、この輪が輪状部Ｒを構成することができる。輪状部Ｒの数が多い程、玉掛ワイヤーを通した際のずれによる梁鉄筋組立用支持具１の落下の可能性を低減することができる。
（変形例２） In the present embodiment, four legs 21 are formed. For example, the structure is strengthened by connecting the extended ends of the two legs 21 extending in the same direction in the thickness direction of the body portion 3. It is also possible to do. In this case, the foot portion 2 forms a ring together with the fourth support portion 31D, and this ring can form the ring-shaped portion R. As the number of ring-shaped portions R increases, the possibility of the beam reinforcing bar assembling support 1 falling due to displacement when passing through the sling wire can be reduced.
(Modification 2)

本実施形態において、第１支持部３１Ａを用いて梁鉄筋を支持する際に番線などでパイプや木材を固定する必要がある。しかし、第１支持部３１Ａの支持面（上端３Ｂ）にパイプや木材を収容する窪みを形成してもよい。これによって、番線などによる固定を無くすことができたり、固定を簡素化することが可能になる。更に、他の支持部３１Ｂ、３１Ｃ、３１Ｄについても同様に窪みを形成することも可能である。なお、窪みの形状は、パイプや木材に合わせて適宜採用することができる。
（変形例３） In the present embodiment, when the beam reinforcing bar is supported by using the first support portion 31A, it is necessary to fix the pipe or the wood with a number wire or the like. However, a recess for accommodating a pipe or wood may be formed on the support surface (upper end 3B) of the first support portion 31A. As a result, it is possible to eliminate the fixing by the number line and the like, and it becomes possible to simplify the fixing. Further, it is also possible to form a recess in the other support portions 31B, 31C and 31D in the same manner. The shape of the recess can be appropriately adopted according to the pipe or wood.
(Modification example 3)

上述の実施形態において、図５Ｄの第３鉄筋ＴＫ３を第１鉄筋ＴＫ１が構成する左右端３Ｃの向き合う方向における内側に溶接する工程を、図５Ｃ第１鉄筋ＴＫ１および第２鉄筋ＴＫ２を背中合わせに溶接する工程の後に実施することとしたが、これらの工程は逆であってもよい。これらの工程を逆にした場合には、第１鉄筋ＴＫ１を倒した状態（胴体部３を床面に配置）で第３鉄筋ＴＫ３を第１鉄筋ＴＫ１に溶接できるため、第３鉄筋ＴＫ３の第１鉄筋ＴＫ１に対する位置決めが容易になる。 In the above-described embodiment, the step of welding the third reinforcing bar TK3 of FIG. 5D inward in the facing direction of the left and right ends 3C formed by the first reinforcing bar TK1 is performed, and the first reinforcing bar TK1 and the second reinforcing bar TK2 of FIG. 5C are welded back to back. Although it was decided to carry out after the step of performing, these steps may be reversed. When these steps are reversed, the third reinforcing bar TK3 can be welded to the first reinforcing bar TK1 in a state where the first reinforcing bar TK1 is tilted (the body portion 3 is arranged on the floor surface). Positioning with respect to 1 reinforcing bar TK1 becomes easy.

１梁鉄筋組立用支持具
２足部
２１足
３胴体部
３Ａ下端
３Ｂ上端
３Ｃ左右端
３１支持部
３１Ａ第１支持部
３１Ｂ第２支持部
３１Ｃ第３支持部
３１Ｄ第４支持部
Ｒ輪状部
Ｒ１第１輪状部
Ｒ２第２輪状部
Ｒ３第３輪状部
ＴＫ１第１鉄筋
ＴＫ２第２鉄筋
ＴＫ３第３鉄筋 1 Beam rebar assembly support 2 Foot 21 Foot 3 Body 3A Lower end 3B Upper end 3C Left and right ends 31 Support 31A 1st support 31B 2nd support 31C 3rd support 31D 4th support R Ring-shaped part R1 1st 1 Ring-shaped part R2 2nd ring-shaped part R3 3rd ring-shaped part TK1 1st reinforcing bar TK2 2nd reinforcing bar TK3 3rd reinforcing bar

Claims

Including the foot and torso formed by bending the bar
The foot portion is formed at one end of the body portion, and the foot portion is formed.
The rod members forming at least a part of the foot portion and the body portion form a ring to partition the ring-shaped portion.
A support for assembling beam reinforcing bars.

The body portion is formed so as to form a surface, and is formed.
The feet are formed on both sides of the surface in the thickness direction.
The connection between the foot and the body is at a substantially right angle.
The support for assembling a beam reinforcing bar according to claim 1.

The body portion forms a multi-stage support portion that supports the beam reinforcing bar, and forms a support portion.
The ring-shaped portion is partitioned by forming the plurality of stages of support portions.
The support for assembling a beam reinforcing bar according to claim 1 or 2.

In the ring-shaped portion, when the body portions of the plurality of beam reinforcing bar assembling supports are overlapped in the thickness direction of the body portion, the ring-shaped portions of the plurality of beam reinforcing bar assembling supports are formed. It is formed at a position where it overlaps in the thickness direction.
The support for assembling a beam reinforcing bar according to any one of claims 1 to 3.

When a plurality of the beam reinforcing bar assembling supports are stacked in the thickness direction, the ring-shaped portion includes one end portion of the beam reinforcing bar assembling support and the other beam reinforcing bar assembling support. Even when the other end on the opposite side to the one end is overlapped so as to be located close to each other, the ring-shaped portions of the plurality of beam reinforcing bar assembly supports overlap each other in the thickness direction. Formed in position,
The support for assembling a beam reinforcing bar according to claim 4.

The process of forming multiple bodies by bending multiple bars, and
The process of forming a plurality of legs by further bending the plurality of rods, and
The process of welding the plurality of rods and
It is a manufacturing method of a support for assembling a beam reinforcing bar including
In the welding step, a body portion is formed from the plurality of bodies, and the body portion is formed.
In the welding step, a foot portion is formed from the plurality of feet.
In the welding step, the ring-shaped portion is partitioned by forming a ring from the plurality of rods forming at least a part of the foot portion and the body portion.
A method for manufacturing a support for assembling a beam reinforcing bar.