JP7352225B2 - Pressure pipe fixing fittings for concrete placement - Google Patents
Pressure pipe fixing fittings for concrete placement Download PDFInfo
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Description
この発明は、構造物の柱や梁に用いるＨ形鋼にスラブ等に打設するコンクリートを送る圧送管を固定するためのコンクリート打設用圧送管固定金具に関する。 The present invention relates to a concrete casting pipe fixing fitting for fixing a pressure pipe for transporting concrete to be poured into a slab or the like onto an H-beam used for columns and beams of structures.
従来、柱や梁にＨ形鋼を用いた構造物として鉄骨造があるが、例えば、鉄骨造のスラブにコンクリートを打設する場合で、特に高層階の場合には地上面に配置するコンクリートポンプ車から圧送管を通してコンクリートを圧力で打ち上げて階上のスラブ等にコンクリートを打設していた。
その際、圧送管は梁や柱のＨ形鋼のフランジ部に圧送管を固定するＵボルトを直接、あるいは、支持プレート等を介して溶着、あるいは、ボルト挿通用透孔を穿設してボルト、ナットで固着するなど、構造材となるＨ形鋼に加工を施していたことが開示されている。（特許文献１）Conventionally, steel structures are used as structures that use H-beams for columns and beams, but for example, when concrete is poured into the slab of a steel structure, especially in the case of high-rise floors, a concrete pump placed on the ground level is required. Concrete was pumped from a car through a pressure pipe and poured into the slabs on the floors above.
At that time, the pressure-feeding pipe is bolted by directly welding the U-bolt that fixes the pressure-feeding pipe to the flange of the H-beam of the beam or column, or by welding it through a support plate, or by drilling a through-hole for the bolt. It is disclosed that the H-shaped steel used as the structural material was processed, such as by fixing it with nuts. (Patent Document 1)
しかし、構造材となるＨ形鋼に固定部材を溶接すること、あるいは、ボルト挿通用透孔を穿設することは、Ｈ形鋼自体の強度劣化を招くことになり構造上の問題が発生すると共に、作業性においても、圧送管の固定位置はコンクリートを運搬するミキサー車やコンクリートポンプ車の配置場所や構造物の状況により現場で判断して決定されるために、固定部材の溶接や穿孔の作業が現場作業となるため非常に煩雑で作業性が悪いなどの問題点が生じていた。 However, welding fixing members to the H-shaped steel that serves as the structural material, or drilling through holes for bolt insertion, leads to a deterioration in the strength of the H-shaped steel itself, which causes structural problems. In addition, in terms of workability, the fixing position of the pressure pipe is determined on site based on the location of the mixer truck or concrete pump truck that transports the concrete, and the condition of the structure, so it is difficult to weld and drill the fixing members. Since the work was done on-site, it was very complicated and had problems such as poor work efficiency.
この発明は上記従来の課題に鑑みなされたもので、その目的は、構造物の梁や柱としてＨ形鋼を使用する際、そのフランジ部に溶接やボルト挿通用透孔の穿設等の加工を施すことなく、Ｈ形鋼のフランジ部に圧送管を強固に固定できる共に、脱着作業も簡単にできることにある。 This invention was made in view of the above-mentioned conventional problems, and its purpose is to perform processing such as welding or drilling through holes for bolt insertion on the flange portion when using H-beams as beams or columns of structures. The pressure feed pipe can be firmly fixed to the flange part of the H-shaped steel without any additional work, and the work for attaching and detaching can be done easily.
上記問題点を解決するためのコンクリート打設用圧送管固定金具は、Ｈ形鋼を用いた柱や梁にコンクリートを圧送する圧送管を固定するための固定金具であって、Ｈ形鋼のフランジ部に固定する固定部材と、該固定部材に接合され圧送管を支持する支持部材とを有し、
前記支持部材は、一対の透孔が間隔をあけて設けられた支持板と、端部に形成された一対のネジ部及び該一対のネジ部を繋ぐＵ字屈曲部を有し、該一対のネジ部が該支持板の一方側から他方側へ向かって該一対の透孔に挿通され、Ｕ字屈曲部と支持板の該一方側の面との間に前記圧送管を挟み込んで固定するＵボルトと、該支持板の該他方側から該ネジ部へ螺合するナットと、を備え、
前記固定部材は、対向する一対の挟持片と該一対の挟持片間の挟持口とにより略コの字形をなし、該挟持口において前記Ｈ形鋼のフランジ部を固定する挟持体と、一方の該挟持片に設けた貫通ネジ穴から前記他方の挟持片に向かって進退可能に螺着した押圧ボルトと、を有するクランプ金具と、該クランプ金具が内面に沿うように固着する略Ｌ字状の支持座とを備え、該支持座を介して前記支持板の該他方側に接合されていることを特徴とする。 To solve the above problems, the fixing fittings for pressure pipes for concrete pouring are fixing fittings for fixing pressure pipes for pumping concrete to columns and beams made of H-shaped steel, and are used to fix the pressure pipes for pumping concrete to columns and beams made of H-shaped steel. a fixing member fixed to the part, and a support member joined to the fixing member and supporting the pressure feeding pipe,
The support member has a support plate having a pair of through holes spaced apart from each other, a pair of threaded parts formed at the end, and a U-shaped bent part connecting the pair of threaded parts. A threaded portion is inserted through the pair of through holes from one side of the support plate to the other side, and the pressure feeding pipe is sandwiched and fixed between the U-shaped bent portion and the one side surface of the support plate. comprising a bolt and a nut screwed into the threaded portion from the other side of the support plate,
The fixing member has a substantially U-shape formed by a pair of opposing clamping pieces and a clamping opening between the pair of clamping pieces, and includes a clamping body that fixes the flange portion of the H-beam steel at the clamping opening, and one clamping member. a clamp fitting having a press bolt screwed so as to be able to move forward and backward from a through screw hole provided in the holding piece toward the other holding piece; and a support seat , and is joined to the other side of the support plate via the support seat .
圧送管固定金具について、前記固定部材が複数個の前記クランプ金具を有してもよい。 Regarding the pressurized pipe fixing fitting, the fixing member may include a plurality of the clamp fittings.
圧送管固定金具について、前記支持部材は、前記支持板から前記他方側へ向かって延出するアーム部を有し、該支持板と該アーム部とが略Ｔ字形をなしてもよい。 Regarding the pressure feed pipe fixing fitting, the support member may have an arm portion extending from the support plate toward the other side, and the support plate and the arm portion may form a substantially T-shape.
圧送管固定金具について、前記アーム部は、長手方向に沿って延びる長孔を有し、前記固定部材は、該長孔におけるボルト及びナットの締緩により、該長孔に沿って移動可能に前記アーム部と接合されてもよい。 Regarding the pressure feeding pipe fixing fitting, the arm portion has a long hole extending in the longitudinal direction, and the fixing member is movable along the long hole by tightening and loosening bolts and nuts in the long hole. It may be joined to the arm portion.
圧送管固定金具について、前記アーム部は、少なくとも２つの前記固定部材が接合され、前記固定部材は、前記Ｈ形鋼の前記一方側及び前記他方側に配置され、該一方側及び該他方側から該Ｈ形鋼のフランジ部にそれぞれ固定されてもよい。 Regarding the pressure feeding pipe fixing fitting, the arm portion has at least two fixing members joined, the fixing members are arranged on the one side and the other side of the H-shaped steel, and the arm part is arranged on the one side and the other side of the H-shaped steel, and They may be respectively fixed to the flange portions of the H-shaped steel.
圧送管固定金具について、前記固定部材は、前記押圧ボルトが前記圧送管の長手方向と略平行する方向へ進退可能な状態で、前記支持部材に接合されることにより、前記Ｈ形鋼の長手方向と前記圧送管の長手方向とを略直交させて固定可能であってもよい。
なお、「略直交」とは、各部材の公差及び製造誤差等を考慮して、Ｈ形鋼の長手方向と圧送管の長手方向とが交差する角度が９０度±数度の範囲も含まれるものとする。 Regarding the pressure feeding pipe fixing fitting, the fixing member is joined to the support member in a state in which the pressing bolt is movable in a direction substantially parallel to the longitudinal direction of the pressure feeding pipe, so that the fixing member is fixed in the longitudinal direction of the H-shaped steel. and the longitudinal direction of the pressure-feeding pipe may be made substantially perpendicular to each other and may be fixed.
In addition, "substantially perpendicular" includes a range where the angle at which the longitudinal direction of the H-shaped steel intersects with the longitudinal direction of the pressure pipe is within a range of 90 degrees ± several degrees, taking into account the tolerances and manufacturing errors of each member. shall be taken as a thing.
圧送管固定金具について、前記固定部材は、前記押圧ボルトが前記圧送管の長手方向と略直交する方向へ進退可能な状態で、前記支持部材に接合されることにより、前記Ｈ形鋼の長手方向と前記圧送管の長手方向とを略平行にして固定可能であってもよい。
なお、「略平行」とは、各部材の公差及び製造誤差等を考慮して、Ｈ形鋼の長手方向と圧送管の長手方向との角度の差異が数度の範囲も含まれるものとする。 Regarding the pressure feeding pipe fixing fitting, the fixing member is joined to the supporting member in a state in which the pressing bolt is movable in a direction substantially orthogonal to the longitudinal direction of the pressure feeding pipe, so that the fixing member is fixed in the longitudinal direction of the H-shaped steel. and the longitudinal direction of the pressure-feeding tube may be made substantially parallel to each other and may be fixed.
Note that "substantially parallel" includes a range in which the difference in angle between the longitudinal direction of the H-shaped steel and the longitudinal direction of the pressure pipe is only a few degrees, taking into account the tolerances and manufacturing errors of each member. .
本発明によれば、Ｈ形鋼のフランジ部に固定する固定部材と、該固定部材に接合され圧送管を支持する支持部材とからなり、前記固定部材は対向する一対の挟持片とそれら挟持片間の挟持口とにより略コの字形をなす挟持体と、該挟持体の一方の挟持片に設けた貫通ネジ穴から他方の挟持片に向かって進退可能に螺着した押圧ボルトからなるクランプ金具と、該クランプ金具が内面に沿うように固着する略Ｌ字状の支持座とを備え、該支持座を介して前記支持板の該他方側に接合されていることにより、Ｈ形鋼のフランジ部に該挟持口を外嵌した状態で押圧ボルトをフランジ面に向かって締め込むことで、クランプ金具を強固に固定することができると共に、圧送管で送るコンクリートに掛る圧力に抗する必要な固定力を得ることができる。また、複数の金具を必要とする場合には、複数の金具を支持座に固着して一体化できるので、取り扱いやすくなる。
前記支持部材は、一対の透孔が間隔をあけて設けられた支持板と、端部に形成された一対のネジ部及び該一対のネジ部を繋ぐＵ字屈曲部を有し、該一対のネジ部が該支持板の一方側から他方側へ向かって該一対の透孔に挿通され、Ｕ字屈曲部と支持板の該一方側の面との間に前記圧送管を挟み込んで固定するＵボルトと、該支持板の他方側から該ネジ部へ螺合するナットとを備えたことにより、圧送管を支持板に当接した状態でＵボルトを抱合させ、ナットを締め付けることで、容易にしかも確実に固定することができる。すなわち、圧送管をＨ形鋼のフランジ部に強固に固定することができる。According to the present invention, the fixing member includes a fixing member fixed to the flange portion of the H-section steel, and a support member joined to the fixing member to support the pressure-feeding pipe, and the fixing member includes a pair of opposing clamping pieces and the clamping pieces. A clamping fitting consisting of a clamping body having a substantially U-shape with a clamping opening between the clamping bodies, and a pressing bolt screwed so as to be able to move forward and backward from a through screw hole provided in one clamping piece of the clamping body toward the other clamping piece. and a substantially L-shaped support seat to which the clamp fitting is fixed along the inner surface , and is joined to the other side of the support plate via the support seat, so that the clamp fitting is attached to the other side of the support plate. By tightening the pressure bolt toward the flange surface with the clamping port externally fitted to the flange, the clamp fitting can be firmly fixed, and the necessary pressure to resist the pressure applied to the concrete sent by the pressure pipe can be tightened. Fixed power can be obtained. Furthermore, when a plurality of metal fittings are required, the plurality of metal fittings can be fixed to the support seat and integrated, making handling easier.
The support member has a support plate having a pair of through holes spaced apart from each other, a pair of threaded parts formed at the end, and a U-shaped bent part connecting the pair of threaded parts. A threaded portion is inserted through the pair of through holes from one side of the support plate to the other side, and the pressure feeding pipe is sandwiched and fixed between the U-shaped bent portion and the one side surface of the support plate. By providing a bolt and a nut that is screwed onto the threaded part from the other side of the support plate, the U-bolt can be engaged with the pressure-feeding pipe in contact with the support plate, and the nut can be tightened, making it easy to Moreover, it can be fixed securely. That is, the pressure feeding pipe can be firmly fixed to the flange portion of the H-section steel.
固定部材が複数個のクランプ金具を有するため、Ｈ形鋼に取り付ける固定力を高めることができる。 Since the fixing member has a plurality of clamp fittings, the fixing force for attaching it to the H-section steel can be increased.
支持部材は、支持板から他方側へ向かって延出するアーム部を有し、支持板とアーム部とがＴ字形をなすことにより、固定部材に対し、アーム部が任意の位置で接合することで、圧送管をＨ形鋼から適宜離れた位置でも対応して固定することができる。 The support member has an arm portion extending from the support plate toward the other side, and the support plate and the arm portion form a T shape, so that the arm portion can be joined to the fixed member at any position. Therefore, the pressure feeding pipe can be fixed at a position appropriately away from the H-shaped steel.
アーム部は、長手方向に沿って延びる長孔を有し、前記固定部材は、該長孔におけるボルト及びナットの締緩により、前長孔に沿って移動可能にアーム部と接合されていることにより、Ｈ形鋼に支持部材を固定した際に、支持板がＨ形鋼から離反方向に進退可能になるので、Ｈ形鋼から圧送管が任意に離れて距離が一定でない場合であっても、支持部材が進退することで対応して確実に固定することができる。 The arm portion has an elongated hole extending in the longitudinal direction, and the fixing member is connected to the arm portion so as to be movable along the front elongated hole by tightening and loosening bolts and nuts in the elongated hole. Therefore, when the support member is fixed to the H-section steel, the support plate can move forward and backward in the direction away from the H-section steel, so even if the pressure pipe is arbitrarily separated from the H-section steel and the distance is not constant. By moving the support member forward and backward, it is possible to securely fix the support member accordingly.
前記アーム部は、少なくとも２つの前記固定部材が接合され、前記固定部材は、前記Ｈ形鋼の前記一方側及び前記他方側に配置され、該一方側及び該他方側から該Ｈ形鋼のフランジ部にそれぞれ固定されることにより、圧送管の振動による固定金具からの外れを防止して信頼性の高い固定金具を提供することができる。 At least two of the fixing members are joined to the arm portion, and the fixing members are arranged on the one side and the other side of the H-beam, and the flange of the H-beam is connected to the arm from the one side and the other side. By being fixed to the respective parts, it is possible to prevent the pressure-feeding pipe from coming off from the fixing fitting due to vibration, thereby providing a highly reliable fixing fitting.
前記固定部材は、前記押圧ボルトが前記圧送管の長手方向と略平行する方向へ進退可能な状態で、前記支持部材に接合されることにより、前記Ｈ形鋼の長手方向と前記圧送管の長手方向とを略直交させて固定可能であることにより、該固定部材を梁のＨ形鋼に固定した場合に鉛直方向の圧送管を確実に固定することができる。 The fixing member is joined to the supporting member in a state in which the pressing bolt is movable in a direction substantially parallel to the longitudinal direction of the pressure-feeding pipe, so that the fixing member is connected to the support member in the longitudinal direction of the H-shaped steel and the longitudinal direction of the pressure-feeding pipe. Since the fixing member can be fixed substantially orthogonally to the direction, when the fixing member is fixed to the H-shaped steel of the beam, the pressure feeding pipe in the vertical direction can be reliably fixed.
前記固定部材は、前記押圧ボルトが前記圧送管の長手方向と略直交する方向へ進退可能な状態で、前記支持部材に接合されることにより、前記Ｈ形鋼の長手方向と前記圧送管の長手方向とを略平行にして固定可能であることにより、該固定部材を柱のＨ形鋼に固定した場合に鉛直方向の圧送管を確実に固定することができる。 The fixing member is joined to the support member in a state in which the pressing bolt can move back and forth in a direction substantially perpendicular to the longitudinal direction of the pressure-feeding pipe, so that the fixing member is connected to the support member in the longitudinal direction of the H-shaped steel and the longitudinal direction of the pressure-feeding pipe. Since the fixing member can be fixed in substantially parallel directions, when the fixing member is fixed to the H-shaped steel of the column, the pressure feeding pipe in the vertical direction can be reliably fixed.
本発明の実施の形態を図面により詳細に説明する。
なお、本明細書では説明の便宜上、支持板の面に対して、圧送管が固定される方向を「一方側」と呼び、Ｈ形鋼が固定される方向を「他方側」と呼ぶ。また、圧送管の長手方向を上下方向とする。ただし、この上下方向は本実施形態を説明するために規定した方向であり、圧送管及びコンクリート打設用圧送管固定金具が取り付けられる方向を限定するものではない。
本発明の実施形態に係るコンクリート打設用圧送管固定金具は、Ｈ形鋼を用いた梁にコンクリートを圧送する圧送管を固定するための固定金具であって、Ｈ形鋼のフランジ部に固定する固定部材２０と、固定部材２０に接合され圧送管を支持する支持部材１０とを有する。
Ｈ形鋼Ａは長手方向から見てＨ形であり、ウェブ部Ｄ と、ウェブ部Ｄの両端部に形成されたフランジ部Ｂ、Ｂとを有する。圧送管Ｃは、円筒状である。
まず、本発明の実施形態１の各構成について、図１～図３により説明する。
図１から図３に示すように、１０は支持部材であり、薄鋼鈑からなる支持板１１には、一対の透孔１２、１２が左右に間隔をあけて設けられる。それら透孔１２、１２にはＵボルト１３の両端に設けた一対のネジ部１４、１４が支持板１１の一方側から他方側へ向かって挿通され、支持板１１の他方側からナット１５、１５をそれぞれ螺着する。ナット１５、１５は、緩み防止のため２重に締め込むことが望ましいので、各２個設ける。
支持板１１の上下縁はプレス加工により他方側に一体的に屈曲させて、長手方向の剛性を高めると共に、圧送管の外周が当接する当接部１６、１６とし、圧送管の外径に沿うように円弧状に切欠いている。Ｕボルト１３の一対のネジ部１４、１４を繋ぐＵ字屈曲部１７ と支持板１１の他方側に設けられた該切欠き部の面との間に圧送管を挟み込み、安定して保持することができる。
２０は固定部材であり、並列する２つのクランプ金具２１、２１とからなる。
クランプ金具２１、２１は、上下に対向する一対の挟持片２２、２３とそれら挟持片２２、２３間となる挟持口２４とにより、側面視して略コの字形をなす挟持体２５と、一方の挟持片２２に設けた貫通ネジ穴２６に他方の挟持片２３に向かって上下方向に進退可能に螺着した押圧ボルト２７からなる。
挟持体２５は、押圧ボルト２７が他方の挟持片２３に向かって締め付けられることにより、挟持口２４においてＨ形鋼のフランジ部を固定する。挟持体２５は冷間あるいは熱間鍛造加工により一体的に成形して、安定した強度を得る形態とする。Embodiments of the present invention will be described in detail with reference to the drawings.
In this specification, for convenience of explanation, the direction in which the pressure feeding pipe is fixed to the surface of the support plate is referred to as "one side", and the direction in which the H-beam is fixed is referred to as "the other side". Further, the longitudinal direction of the pressure feeding pipe is defined as the up-down direction. However, this vertical direction is a direction specified for explaining this embodiment, and does not limit the direction in which the pressure feed pipe and the pressure feed pipe fixing fitting for concrete placement are attached.
A pressure pipe fixing fitting for concrete placement according to an embodiment of the present invention is a fixing fitting for fixing a pressure pipe for pumping concrete to a beam using an H-shaped steel, and is fixed to a flange portion of the H-shaped steel. The fixing member 20 has a fixing member 20, and a support member 10 is joined to the fixing member 20 and supports the pressure feeding pipe.
The H-section steel A is H-shaped when viewed from the longitudinal direction, and has a web portion D and flange portions B formed at both ends of the web portion D. The pressure feed pipe C has a cylindrical shape.
First, each configuration of Embodiment 1 of the present invention will be explained with reference to FIGS. 1 to 3.
As shown in FIGS. 1 to 3, 10 is a support member, and a support plate 11 made of a thin steel plate is provided with a pair of through holes 12, 12 spaced apart from each other on the left and right sides. A pair of threaded parts 14, 14 provided at both ends of the U bolt 13 are inserted into the through holes 12, 12 from one side of the support plate 11 to the other side, and nuts 15, 15 are inserted from the other side of the support plate 11. Screw on each. Since it is desirable to tighten the nuts 15 twice to prevent loosening, two nuts 15 and 15 are provided.
The upper and lower edges of the support plate 11 are integrally bent to the other side by press working to increase the rigidity in the longitudinal direction, and form abutting parts 16, 16 where the outer periphery of the pressure-feeding pipe comes into contact, so that the edges extend along the outer diameter of the pressure-feeding pipe. It has an arc-shaped notch. The pressure feeding pipe is held stably by sandwiching it between the U-shaped bent portion 17 connecting the pair of threaded portions 14, 14 of the U-bolt 13 and the surface of the notch provided on the other side of the support plate 11. Can be done.
A fixing member 20 is composed of two parallel clamp fittings 21, 21.
The clamp fittings 21 and 21 have a clamping body 25 that is approximately U-shaped when viewed from the side by a pair of vertically opposing clamping pieces 22 and 23 and a clamping opening 24 between the clamping pieces 22 and 23; It consists of a press bolt 27 screwed into a through screw hole 26 provided in one of the clamping pieces 22 so as to be able to move forward and backward in the vertical direction toward the other clamping piece 23.
The clamping body 25 fixes the flange portion of the H-shaped steel at the clamping opening 24 by tightening the press bolt 27 toward the other clamping piece 23 . The holding body 25 is integrally formed by cold or hot forging to obtain stable strength.
固定部材２０と支持部材１０との接合は、支持部材１０の支持板１１の圧送管が当接する一方側とは反対の他方側に挟持体２５を溶接により固定するが、挟持体２５を溶接する向きを変えることで、Ｈ形鋼を柱に使用しその柱に沿って圧送管を固定する場合、あるいは、Ｈ形鋼を梁に使用してその梁に圧送管を固定する場合に対応することができるので以下に説明する。
（実施形態１）
Ｈ形鋼を梁に使用する場合は図４に示すように、固定部材２０を取付けるＨ形鋼のフランジ部の長手方向に対して、圧送管は略直交した状態となる。支持板１１の他方側面に、挟持体２５の挟持口２４を他方側へ向いて開口させ、押圧ボルト２７が圧送管の長手方向と略平行する方向へ進退可能な状態になるように、溶接により２体の挟持体２５、２５を左右に並列して接合する。
（実施形態２）
Ｈ形鋼を柱で使用し、圧送管をその柱のフランジ縁部の長手方向に沿って略平行に固定する場合を説明する。図５に示すように、Ｈ形鋼Ａのウェブ部Ｄは支持板１１と略平行に対向し、フランジ部Ｂ、Ｂは支持板１１と略直交する方向に突出し、固定部材２０を取付けるＨ形鋼のフランジの長手方向に対して、圧送管は略平行状態となる。支持板１１の他方側面には、挟持体２５の挟持口２４を他方側へ向いて開口させ、押圧ボルト２７が圧送管の長手方向と略直交する方向へ進退可能な状態となるように、溶接により２体の挟持体２５、２５を上下に並列して固定する。
（実施形態３）
Ｈ形鋼を柱で使用し、圧送管をその柱のフランジ広面の長手方向に沿って略平行に固定する場合を説明する。図６に示すように、Ｈ形鋼Ａのウェブ部Ｄは支持板１１と略直交し、フランジ部Ｂ、Ｂの面は支持板１１と略平行であり、固定部材２０を取付けるＨ形鋼のフランジ部の長手方向に対して、圧送管は略平行状態となる。支持板１２の他方側面には、挟持体２５の一方の挟持片２３の外面側を、押圧ボルト２７が圧送管の長手方向と略直交する方向へ進退可能な状態となるように、溶接により２体の挟持体２５、２５を上下に並列して固定する。The fixing member 20 and the supporting member 10 are joined by welding the clamping body 25 to the other side of the supporting plate 11 of the supporting member 10, which is opposite to the one side where the pressure feeding pipe contacts. By changing the direction, you can use H-shaped steel as a column and fix the pressure-feeding pipe along that column, or use H-shaped steel as a beam and fix the pressure-feeding pipe to that beam. This will be explained below.
(Embodiment 1)
When H-shaped steel is used for the beam, as shown in FIG. 4, the pressure feed pipe is approximately perpendicular to the longitudinal direction of the flange portion of the H-shaped steel to which the fixing member 20 is attached. The clamping port 24 of the clamping body 25 is opened on the other side of the support plate 11 toward the other side, and is welded so that the pressing bolt 27 can move forward and backward in a direction substantially parallel to the longitudinal direction of the pressure-feeding pipe. The two holding bodies 25, 25 are joined in parallel on the left and right.
(Embodiment 2)
A case will be described in which H-shaped steel is used as a column and a pressure feed pipe is fixed substantially parallel to the longitudinal direction of the flange edge of the column. As shown in FIG. 5, the web portion D of the H-shaped steel A faces the support plate 11 in substantially parallel, the flange portions B protrude in a direction substantially perpendicular to the support plate 11, and the H-shaped steel member 20 is attached to the web portion D of the H-shaped steel A. The pressure feed pipe is approximately parallel to the longitudinal direction of the steel flange. The other side of the support plate 11 is welded so that the clamping port 24 of the clamping body 25 is opened toward the other side, and the pressing bolt 27 can move forward and backward in a direction substantially perpendicular to the longitudinal direction of the pressure-feeding pipe. The two clamping bodies 25, 25 are fixed vertically in parallel.
(Embodiment 3)
A case will be described in which an H-shaped steel is used as a column and a pressure feed pipe is fixed substantially parallel to the longitudinal direction of the wide flange surface of the column. As shown in FIG. 6, the web portion D of the H-beam A is approximately perpendicular to the support plate 11, the surfaces of the flange portions B and B are approximately parallel to the support plate 11, and the The pressure feed pipe is approximately parallel to the longitudinal direction of the flange portion. On the other side of the support plate 12, welding is performed so that the outer surface of one of the clamping pieces 23 of the clamping body 25 can be moved back and forth in a direction substantially perpendicular to the longitudinal direction of the pressure-feeding pipe with a press bolt 27. The holding bodies 25, 25 of the body are fixed in parallel vertically.
圧送管で送るコンクリートに掛る圧力は、コンクリートを送る時間当たりの量や打設場所までの距離、階高により異なり、このコンクリートを送る圧力が大きくなれば、コンクリートを送る際の圧送管の振動が大きくなるので、より大きな固定力が必要となり、それらの条件により固定部材２０のクランプ金具２１の個数を変えることで対応することができる。すなわち、ここでは２つのクランプ金具が並列した形態で説明したが、圧力が小さい場合は１つにすることや、反対に圧力が大きく、より大きな固定力を求める場合には個数を増やすことも可能である。（図示省略） The pressure applied to the concrete sent by the pressure pipe varies depending on the amount of concrete sent per hour, the distance to the pouring location, and the height of the floor.If the pressure for sending concrete increases, the vibration of the pressure pipe when sending concrete will increase. As the size increases, a larger fixing force is required, which can be accommodated by changing the number of clamp fittings 21 of the fixing member 20 depending on these conditions. In other words, here we have explained the configuration in which two clamp fittings are arranged in parallel, but if the pressure is small, it is possible to use only one, or conversely, if the pressure is large and a greater fixing force is required, the number can be increased. It is. (Illustration omitted)
実施形態１の使用状態を図７に基づいて説明する。
図７に示すように、まず、固定部材２０のクランプ金具２１、２１を梁のＨ形鋼Ａのフランジ部Ｂに対して挟持口２３を外嵌した状態で押圧ボルト２７をフランジ面に向かって締め込むことで、挟持体２５、２５は、Ｈ形鋼Ａの一方のフランジ部Ｂの片側をそれぞれ固定する。
次に圧送管Ｃを支持板１１の当接部１６、１６に当接した状態でＵボルト１３を抱合させ、裏側からナット１５、１５を締め付けて固定させる。
このように使用することにより、Ｈ形鋼の長手方向と圧送管の長手方向とを略直交させて固定することができる。
コンクリート打設後、圧送管の撤去の際に本発明の固定金具もＨ形鋼から取り外して、転用することができるものである。The usage state of the first embodiment will be explained based on FIG. 7.
As shown in FIG. 7, first, with the clamping holes 23 of the clamp fittings 21, 21 of the fixing member 20 fitted onto the flange portion B of the H-section steel A of the beam, the press bolt 27 is pushed toward the flange surface. By tightening, the clamping bodies 25, 25 fix one side of the flange portion B of the H-section steel A, respectively.
Next, the U-bolt 13 is engaged with the pressure feed pipe C in contact with the contact parts 16, 16 of the support plate 11, and the nuts 15, 15 are tightened from the back side to fix it.
By using it in this way, the longitudinal direction of the H-shaped steel and the longitudinal direction of the pressure-feeding pipe can be made substantially perpendicular to each other and fixed.
After concrete placement, when removing the pressure pipe, the fixing fitting of the present invention can also be removed from the H-section steel and used for other purposes.
また、実施形態２及び実施形態３も上記と同様の手順で、柱のＨ形鋼Ａのフランジ部Ｂに固定部材２０を取り付け、支持部材で圧送管Ｃを固定することで、それぞれの目的に応じた使用状態となるので説明は省略する（図８及び図９参照）。 In addition, in Embodiments 2 and 3, in the same procedure as above, the fixing member 20 is attached to the flange part B of the H-beam A of the column, and the pressure feeding pipe C is fixed with the support member, thereby achieving each purpose. The description will be omitted since the usage state will be accordingly (see FIGS. 8 and 9).
（実施形態４）
本発明の実施形態４の各構成について、図１０～図１３により説明する。
図１０から図１３に示すように、１００は支持部材であり、薄鋼鈑からなる支持板１１０に一対の透孔１２０、１２０が左右に間隔をあけて設けられる。
１１５はアーム部であり、長手方向の剛性を高めるために両端が下方に向けて屈曲した断面略コの字型の支持面１１６のほぼ中央に長手方向に沿って長孔１１７を設けた。また、アーム部１１５は、支持板１１０から他方側へ向かって延出するようにその先端を支持面１１６の他方側の面に溶接により固定し、支持板１１０とアーム部１１５とにより略Ｔ字形に形成する。
前記支持板の形態及び、その他構成となるＵボルト、ナットについては実施形態１と同じであるので説明を省略する。
また、長孔１１７に代えて複数個の透孔（図示省略）を設けてもよく、適宜間隔で段階的に調整することができる効果が期待できる。
２００は固定部材であり、長孔１１７におけるボルト３００及びナット３１０の締緩により、長孔１１７に沿って移動可能にアーム部１１５と接合されている。固定部材２００のクランプ金具２１０の形態は実施形態１と同じであるので省略するが支持座２８０に２つ溶接により固定する。
支持座２８０は、前記アーム部１１５の幅長さより幅広のアングル状であり、上下方向に延出するＸ座面２８１と左右方向に延出するＹ座面２８２の２辺からなり、Ｘ座面２８１の内面に前記挟持片２３０の外面が、Ｙ座面２８２の内面に前記クランプ金具２１０の挟持口２４０の外面が沿うように配置、固定され、挟持体２５の挟持口２４は他方側へ向いて開口している。
ここでは溶接で接合する説明をしたが、挟持体にネジ穴を穿設し、そのネジ穴に合う透孔を支持座に設け、前記ネジ穴にボルトをねじ込んで固定することもできる。（図示省略）
４００はフランジ部Ｂからコンクリート打設用圧送管固定金具が外れるのを防止するための固定部材（以下、外れ防止部材と呼ぶ）であり、固定部材２００と対向させて配置され、長孔１１７におけるボルト３００及びナット３１０の締緩により、長穴１１７に沿って移動可能にアーム部１１５と接合されている。外れ防止部材４００は、前記固定部材２００と同形態であるがクランプ金具２１０は１つとしている。
また、外れ防止部材４００を備えることなく、固定部材２００にアーム部１１５をボルト３００ナット３１０で固定することもできるが、その場合は前記ボルト３００ナット３１０を２本使用することで安定して固定することができる。（図２０参照）(Embodiment 4)
Each configuration of Embodiment 4 of the present invention will be explained with reference to FIGS. 10 to 13.
As shown in FIGS. 10 to 13, 100 is a support member, and a support plate 110 made of a thin steel plate has a pair of through holes 120, 120 spaced apart from each other on the left and right sides.
Reference numeral 115 designates an arm portion, in which a long hole 117 is provided along the longitudinal direction approximately in the center of a support surface 116 having a substantially U-shaped cross section with both ends bent downward in order to increase the rigidity in the longitudinal direction. Further, the arm portion 115 has its tip fixed to the other side of the support surface 116 by welding so as to extend from the support plate 110 toward the other side, and the support plate 110 and the arm portion 115 form a substantially T-shape. to form.
The form of the support plate and other components such as U bolts and nuts are the same as in Embodiment 1, so their explanation will be omitted.
Further, a plurality of through holes (not shown) may be provided in place of the elongated hole 117, and the effect of being able to adjust the distance in stages at appropriate intervals can be expected.
A fixed member 200 is connected to the arm portion 115 so as to be movable along the elongated hole 117 by tightening and loosening a bolt 300 and a nut 310 in the elongated hole 117. The form of the clamp fittings 210 of the fixing member 200 is the same as in Embodiment 1, so the description thereof will be omitted, but two clamp fittings 210 are fixed to the support seat 280 by welding.
The support seat 280 has an angular shape wider than the width of the arm portion 115, and consists of two sides: an X seat surface 281 extending in the vertical direction and a Y seat surface 282 extending in the left and right direction. The outer surface of the clamping piece 230 is arranged and fixed on the inner surface of the clamp member 281, and the outer surface of the clamping port 240 of the clamp fitting 210 is along the inner surface of the Y seat surface 282, and the clamping port 24 of the clamping body 25 faces the other side. It is open.
Although the explanation has been given here of joining by welding, it is also possible to drill a screw hole in the clamping body, provide a through hole that fits the screw hole in the support seat, and fix it by screwing a bolt into the screw hole. (Illustration omitted)
Reference numeral 400 is a fixing member (hereinafter referred to as a detachment prevention member) for preventing the concrete pouring pipe fixing fitting from coming off from the flange portion B, and is disposed opposite to the fixing member 200, and is provided in the elongated hole 117. By tightening and loosening bolts 300 and nuts 310, it is movably joined to arm portion 115 along elongated hole 117. The detachment prevention member 400 has the same form as the fixing member 200, but includes only one clamp fitting 210.
Further, the arm part 115 can be fixed to the fixing member 200 with bolts 300 and nuts 310 without providing the detachment prevention member 400, but in that case, by using two of the bolts 300 and nuts 310, the arm part 115 can be stably fixed. can do. (See Figure 20)
支持部材１００と固定部材２００との接合は、支持部材１００のアーム部１１５と長孔１１７を介して前記固定部材２００の支持座２８０の透孔２８３とをボルト３００及びナット３１０で固定する。
また、支持部材１００と外れ防止部材４００との接合も同様に、支持部材１００のアーム部１１５と長孔１１７を介して前記外れ防止部材４００の支持座４１０の透孔４２０とをボルト３００及びナット３１０で固定する。
これらボルト３００ナット３１０の締緩により、前記固定部材２００及び外れ防止部材４００に対して前記支持部材１００がアーム部１１５の長孔１１７に沿って移動可能となるように接合するが、支持部材１００の支持板１１０とアーム部１１５を固定する向き及び支持部材１００と固定部材２００の接合位置の組み合わせにより、Ｈ形鋼を柱に使用しその柱に沿って圧送管を固定する場合、あるいは、Ｈ形鋼を梁に使用してその梁に圧送管を固定する場合に対応することができるので以下に説明する。
また、外れ防止部材４００は固定部材２００に常に対向状態となるよう、それぞれ挟持体２５０の挟持口２４０を対向させて長孔１１７に固定される。支持部材１００を固定する位置は固定部材２００と同じになるために説明を省略する。
（実施形態４）
Ｈ形鋼を梁に使用する場合は図１４に示すように、固定部材２００を取付けるＨ形鋼のフランジ部の長手方向に対して、圧送管は略直交した状態となる。支持板１１０とアーム部１１５を固定する向きは、支持面１１６が圧送管の長手方向と略直交になるように固定すると共に、支持部材１００のアーム部１１５を固定部材２００の支持座２８０のＸ座面２８１側に前記ボルト３００ナット３１０で固定する。固定部材２００はＨ形鋼の一方側に配置され、外れ防止部材４００はＨ形鋼の他方側に配置され、一方側及び他方側からＨ形鋼のフランジ部にそれぞれ固定可能である。
（実施形態５）
Ｈ形鋼を柱で使用し、圧送管をその柱のフランジ縁部の長手方向に沿って略平行に固定する場合を説明する。図１５に示すように、固定部材２００を取付けるＨ形鋼のフランジ部の長手方向に対して、圧送管は略平行状態となるので、支持板１１０とアーム部１１５を固定する向きは、支持面１１６が圧送管の長手方向と略平行になるように固定すると共に、支持部材１００のアーム部１１５を固定部材２００の支持座２８０のＸ座面２８１側に前記ボルト３００ナット３１０で固定する。
（実施形態６）
Ｈ形鋼を柱で使用し、圧送管をその柱のフランジ広面の長手方向に沿って略平行に固定する場合を説明する。図１６に示すように、固定部材２００を取付けるＨ形鋼のフランジ部の長手方向に対して、圧送管は略平行状態となる。支持板１１０とアーム部１１５を固定する向きは、支持面１１６が圧送管の長手方向と略平行になるように固定すると共に、支持部材１００のアーム部１１５を固定部材２００の支持座２８０のＹ座面２８２側に前記ボルト３００ナット３１０で固定する。The support member 100 and the fixing member 200 are joined by fixing the arm portion 115 of the support member 100 and the through hole 283 of the support seat 280 of the fixing member 200 via the elongated hole 117 with bolts 300 and nuts 310.
Similarly, the support member 100 and the detachment prevention member 400 are joined together by connecting the arm portion 115 of the support member 100 and the through hole 420 of the support seat 410 of the detachment prevention member 400 through the elongated hole 117 with the bolt 300 and the nut. Fixed at 310.
By tightening and loosening these bolts 300 and nuts 310, the support member 100 is joined to the fixing member 200 and the detachment prevention member 400 so as to be movable along the elongated hole 117 of the arm portion 115. Depending on the direction in which the support plate 110 and the arm part 115 are fixed and the joining position of the support member 100 and the fixing member 200, it is possible to This will be explained below because it can be used when a section steel is used as a beam and a pressure feed pipe is fixed to the beam.
Moreover, the detachment prevention member 400 is fixed in the elongated hole 117 with the clamping openings 240 of the clamping bodies 250 facing each other so as to always face the fixing member 200. The position at which the support member 100 is fixed is the same as that of the fixing member 200, so the explanation will be omitted.
(Embodiment 4)
When H-shaped steel is used for the beam, as shown in FIG. 14, the pressure pipe is approximately perpendicular to the longitudinal direction of the flange portion of the H-shaped steel to which the fixing member 200 is attached. The direction in which the support plate 110 and the arm portion 115 are fixed is such that the support surface 116 is substantially perpendicular to the longitudinal direction of the pressure-feeding pipe, and the arm portion 115 of the support member 100 is fixed in the X direction of the support seat 280 of the fixing member 200. It is fixed to the seat surface 281 side with the bolts 300 and nuts 310. The fixing member 200 is arranged on one side of the H-section steel, and the detachment prevention member 400 is arranged on the other side of the H-section steel, and can be fixed to the flange portion of the H-section steel from one side and the other side, respectively.
(Embodiment 5)
A case will be described in which H-shaped steel is used as a column and a pressure feed pipe is fixed substantially parallel to the longitudinal direction of the flange edge of the column. As shown in FIG. 15, since the pressure feeding pipe is approximately parallel to the longitudinal direction of the flange portion of the H-shaped steel to which the fixing member 200 is attached, the direction in which the support plate 110 and the arm portion 115 are fixed is fixed to the support surface. 116 is fixed so that it is substantially parallel to the longitudinal direction of the pressure-feeding pipe, and the arm portion 115 of the support member 100 is fixed to the X seat surface 281 side of the support seat 280 of the fixing member 200 with the bolt 300 and nut 310.
(Embodiment 6)
A case will be described in which an H-shaped steel is used as a column and a pressure feed pipe is fixed substantially parallel to the longitudinal direction of the wide flange surface of the column. As shown in FIG. 16, the pressure feed pipe is approximately parallel to the longitudinal direction of the flange portion of the H-shaped steel to which the fixing member 200 is attached. The direction in which the support plate 110 and the arm portion 115 are fixed is such that the support surface 116 is substantially parallel to the longitudinal direction of the pressure-feeding pipe, and the arm portion 115 of the support member 100 is fixed in the Y direction of the support seat 280 of the fixing member 200. It is fixed to the seat surface 282 side with the bolt 300 and nut 310.
実施形態４の使用状態を図１７に基づいて説明する。
図１７に示すように、固定部材２００及び外れ防止部材４００の押圧ボルト２７０は、圧送管Ｃの長手方向と略平行する方向へ進退可能な状態である。まず、固定部材２００のクランプ金具２１０、２１０を梁のＨ形鋼Ａのフランジ部Ｂに対して挟持口２３０を外嵌した状態で押圧ボルト２７０をフランジ面に向かって締め込むことでそれぞれ固定する。
次に固定部材２００と支持部材１００を接合するボルト３００ナット３１０を緩めて、支持板１１５をアーム部１１５の長孔１１７に沿って、圧送管Ｃに向かって移動させ、当接部１６０、１６０に当接した状態でＵボルト１３０を抱合させ、裏側からナット１５０、１５０を締め付けて固定させる。
コンクリート打設後、圧送管の撤去の際に本発明の固定金具もＨ形鋼から取り外して、転用することができるものである。The usage state of the fourth embodiment will be explained based on FIG. 17.
As shown in FIG. 17, the fixing member 200 and the pressing bolt 270 of the detachment prevention member 400 are in a state where they can move back and forth in a direction substantially parallel to the longitudinal direction of the pressure-feeding pipe C. First, the clamp fittings 210 and 210 of the fixing member 200 are fixed by tightening the press bolts 270 toward the flange surface with the clamping opening 230 externally fitted onto the flange part B of the H-shaped steel A of the beam. .
Next, loosen the bolts 300 and nuts 310 that connect the fixing member 200 and the support member 100, and move the support plate 115 along the elongated hole 117 of the arm part 115 toward the pressure feeding pipe C. The U-bolt 130 is engaged in a state where it is in contact with the U-bolt 130, and the nuts 150, 150 are tightened from the back side to fix it.
After concrete placement, when removing the pressure pipe, the fixing fitting of the present invention can also be removed from the H-section steel and used for other purposes.
また、実施形態５及び実施形態６も上記と同様の手順で、柱のＨ形鋼Ａのフランジ部Ｂに固定部材２００を取り付け、支持部材１００で圧送管Ｃを固定することで、それぞれの目的に応じた使用状態となるので説明は省略する（図１８及び図１９参照）。 In addition, in Embodiments 5 and 6, the fixing member 200 is attached to the flange part B of the H-shaped steel A of the column, and the pressure feeding pipe C is fixed with the support member 100, using the same procedure as above. The description will be omitted since the state of use will depend on the state of use (see FIGS. 18 and 19).
１０、１００ 支持部材
１１、１１０ 支持板
１１５ アーム部
１１６ 支持面
１１７ 長孔
１２、１２０ 透孔
１３、１３０ Ｕボルト
１４、１４０ ネジ部
１５、１５０ ナット
１６、１６０ 当接部
１７ Ｕ字屈曲部
２０、２００ 固定部材
２１、２１０ クランプ金具
２２、２２０ 挟持片
２３、２３０ 挟持片
２４、２４０ 挟持口
２５、２５０ 挟持体
２７、２７０ 押圧ボルト
２８０ 支持座
２８１ Ｘ座面
２８２ Ｙ座面
２８３ 透孔
３００ ボルト
３１０ ナット
４００ 固定部材（外れ防止部材）
４１０ 支持座
４２０ 透孔
Ａ Ｈ形鋼
Ｂ フランジ部
Ｃ 圧送管
Ｄ ウェブ部10, 100 Support members 11, 110 Support plate 115 Arm portion 116 Support surface 117 Long holes 12, 120 Through holes 13, 130 U bolts 14, 140 Threaded portions 15, 150 Nuts 16, 160 Contact portion 17 U-shaped bent portion 20 , 200 Fixing members 21, 210 Clamp fittings 22, 220 Clamping pieces 23, 230 Clamping pieces 24, 240 Clamping holes 25, 250 Clamping bodies 27, 270 Pressing bolt 280 Support seat 281 X seat surface 282 Y seat surface 283 Through hole 300 Bolt 310 Nut 400 Fixing member (removal prevention member)
410 Support seat 420 Through hole A H-shaped steel B Flange portion C Pressure feed pipe D Web portion
Claims (7)
前記支持部材は、一対の透孔が間隔をあけて設けられた支持板と、端部に形成された一対のネジ部及び該一対のネジ部を繋ぐＵ字屈曲部を有し、該一対のネジ部が該支持板の一方側から他方側へ向かって該一対の透孔に挿通され、Ｕ字屈曲部と支持板の該一方側の面との間に前記圧送管を挟み込んで固定するＵボルトと、該支持板の該他方側から該ネジ部へ螺合するナットと、を備え、
前記固定部材は、対向する一対の挟持片と該一対の挟持片間の挟持口とにより略コの字形をなし、該挟持口において前記Ｈ形鋼のフランジ部を固定する挟持体と、一方の該挟持片に設けた貫通ネジ穴から前記他方の挟持片に向かって進退可能に螺着した押圧ボルトと、を有するクランプ金具と、該クランプ金具が内面に沿うように固着する略Ｌ字状の支持座とを備え、該支持座を介して前記支持板の該他方側に接合されていることを特徴とするコンクリート打設用圧送管固定金具。A fixing fitting for fixing a pumping pipe that pumps concrete to a column or beam using H-shaped steel, which includes a fixing member that is fixed to the flange of the H-shaped steel, and a fixing member that is joined to the fixing member to support the pumping pipe. and a support member that
The support member has a support plate having a pair of through holes spaced apart from each other, a pair of threaded parts formed at the end, and a U-shaped bent part connecting the pair of threaded parts. A threaded portion is inserted through the pair of through holes from one side of the support plate to the other side, and the pressure feeding pipe is sandwiched and fixed between the U-shaped bent portion and the one side surface of the support plate. comprising a bolt and a nut screwed into the threaded portion from the other side of the support plate,
The fixing member has a substantially U-shape formed by a pair of opposing clamping pieces and a clamping opening between the pair of clamping pieces, and includes a clamping body that fixes the flange portion of the H-beam steel at the clamping opening, and one clamping member. a clamp fitting having a press bolt screwed so as to be able to move forward and backward from a through screw hole provided in the holding piece toward the other holding piece; 1. A pressure feed pipe fixing fixture for pouring concrete, comprising: a support seat, and is connected to the other side of the support plate via the support seat.
前記固定部材は、該長孔におけるボルト及びナットの締緩により、該長孔に沿って移動可能に前記アーム部と接合されていることを特徴とする請求項３に記載のコンクリート打設用圧送管固定金具。The arm portion has a long hole extending along the longitudinal direction,
4. The pressure feeder for placing concrete according to claim 3 , wherein the fixing member is movably joined to the arm portion along the elongated hole by tightening and loosening bolts and nuts in the elongated hole. Pipe fixing fittings.
前記固定部材は、前記Ｈ形鋼の前記一方側及び前記他方側に配置され、該一方側及び該他方側から該Ｈ形鋼のフランジ部にそれぞれ固定されることを特徴とする請求項３又は４に記載のコンクリート打設用圧送管固定金具。At least two of the fixing members are joined to the arm part,
4. The fixing member is arranged on the one side and the other side of the H-shaped steel, and is fixed to the flange portion of the H-shaped steel from the one side and the other side, respectively. 4. Pressure feed pipe fixing fitting for concrete placement as described in 4 .
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| JP2019151579A JP7352225B2 (en) | 2019-08-02 | 2019-08-02 | Pressure pipe fixing fittings for concrete placement |
| JP2023091237A JP2023115032A (en) | 2019-08-02 | 2023-05-15 | Force-feed pipe fixture for concrete casting |
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| JP2019151579A JP7352225B2 (en) | 2019-08-02 | 2019-08-02 | Pressure pipe fixing fittings for concrete placement |
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| JP2716686B2 (en) * | 1995-11-07 | 1998-02-18 | 鈴木工業株式会社 | Hanging equipment such as ducts |
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| JP2000346242A (en) | 1999-06-07 | 2000-12-15 | Nippon Se System Kk | Construction system wiring and piping and work execution method therefor |
| JP2001276267A (en) | 2000-03-30 | 2001-10-09 | Nohmi Bosai Ltd | Fire-extinguishing facility |
| JP2004328881A (en) | 2003-04-24 | 2004-11-18 | Hitachi Plant Eng & Constr Co Ltd | Piping support fixing metal fitting |
| JP3118572U (en) | 2005-10-27 | 2006-02-02 | 株式会社シバシン商会 | Bracket for scaffolding for mounting concrete feed pipe |
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