JP5203726B2 - Stair frame fixing bracket for scaffolding - Google Patents
Stair frame fixing bracket for scaffolding Download PDFInfo
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- JP5203726B2 JP5203726B2 JP2008011603A JP2008011603A JP5203726B2 JP 5203726 B2 JP5203726 B2 JP 5203726B2 JP 2008011603 A JP2008011603 A JP 2008011603A JP 2008011603 A JP2008011603 A JP 2008011603A JP 5203726 B2 JP5203726 B2 JP 5203726B2
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Description
本発明は、足場用階段枠の浮き上がりを防止するための金具に関する。 The present invention relates to a metal fitting for preventing the staircase frame for scaffolding from being lifted.
工事現場における足場には、主としてビルの施工時などに用いられる枠組足場、主として住宅の施工時などに用いられる単管足場などがあり、足場の組立方法としては、本足場、一側足場、二側足場、棚足場などがある。また、支保工、ローリングタワーなども足場の一態様である。例えば、枠組足場は、鋼製、アルミ製などの管を溶接し、鳥居型、梯子型などの形状とした建枠、ジャッキベース、交差筋違(ブレース)、脚注ジョイント(連結ピン)、アームロック、鋼製布板、階段枠、梁枠、壁つなぎ、手すり柱、手すり、手すり枠等を基本部材とし、これらを積上げて構成したものであり、高層ビルの建設現場などの多くの工事現場で用いられている。 Scaffolds at construction sites include frame scaffolds mainly used during construction of buildings, single pipe scaffolds mainly used during construction of houses, etc. The assembly methods of scaffolds include main scaffolds, one-side scaffolds, There are side scaffolding and shelf scaffolding. Moreover, a supporting work, a rolling tower, etc. are one aspect | mode of a scaffold. For example, the frame scaffolding is made of steel, aluminum and other pipes welded into a torii-type or ladder-type building frame, jack base, crossing braces, footnote joints (connecting pins), arm locks Steel floorboards, staircase frames, beam frames, wall connections, handrail pillars, handrails, handrail frames, etc. are used as basic components, and these are stacked and used in many construction sites such as high-rise building construction sites. It is used.
ここで、地上と足場との間または足場の上下段の間の移動には、階段枠が用いられるが、階段枠には、大別して、階段枠下部を建枠の横地に固定するタイプの足場用階段枠と階段枠下部を下階の布板上に載置するタイプの足場用階段枠とがある。 Here, a staircase frame is used to move between the ground and the scaffolding or between the upper and lower stages of the scaffolding. The staircase frame is roughly divided into a type of scaffold that fixes the lower part of the staircase frame to the side of the building frame. There is a staircase frame for scaffolding and a staircase frame for the type of scaffolding in which the lower part of the staircase frame is placed on the lower floor.
図1は、階段枠下部を建枠の横地に固定するタイプの足場用階段枠の例を示す図であり、(a)は正面図、(b)は側面図、(c)は(b)の一部拡大図をそれぞれ示している。図2は、階段枠下部を下階の布板上に載置するタイプの足場用階段枠の例を示す図であり、(a)は、正面図、(b)は側面図、(c)は(b)の一部拡大図をそれぞれ示している。 FIG. 1 is a diagram showing an example of a staircase frame for scaffolding of the type in which the lower part of the staircase frame is fixed to the horizontal ground of the building frame, (a) is a front view, (b) is a side view, and (c) is (b). FIG. FIG. 2 is a view showing an example of a staircase frame for scaffolding of the type in which the lower part of the staircase frame is placed on a lower floor cloth board, (a) is a front view, (b) is a side view, and (c). FIG. 2 shows a partially enlarged view of (b).
図1に示す階段枠の例は、一対の桁材1a、1bと、桁材の間に設けられたステップ2と、桁材1a、1bの上端に設けられたフック3a、3bと、桁材1a、1bの下端に設けられたフック3c、3dを有しており、フック3a、3bが上階の建枠の横地(図示しない)に、フック3c、3dが下階の建枠の横地にそれぞれ引っかけられる構成を有する階段枠4aの例である。これにより、フック3a〜3dが上下階に固定され、階段枠4aが水平方向および垂直方向に移動するのが抑止される。 The example of the staircase frame shown in FIG. 1 includes a pair of girders 1a and 1b, a step 2 provided between the girders, hooks 3a and 3b provided at the upper ends of the girders 1a and 1b, and a girders. There are hooks 3c and 3d provided at the lower ends of 1a and 1b. The hooks 3a and 3b are on the side of a building frame on the upper floor (not shown), and the hooks 3c and 3d are on the side of a building frame on the lower floor. It is an example of the staircase frame 4a which has the structure each hooked. Accordingly, the hooks 3a to 3d are fixed to the upper and lower floors, and the staircase frame 4a is prevented from moving in the horizontal direction and the vertical direction.
一方、図2に示す階段枠の例は、一対の桁材1a、1bと、桁材の間に設けられたステップ2と、桁材1a、1bの上端に設けられたフック3a、3bを有する点は図1に示す例と同様であるが、桁材1a、1bの下端には載置治具5が設けられており、下階の布板(図示しない)上に載置される構成を有する階段枠4bの例である。この階段枠4bは、桁材1a、1bの下端にフック3c、3dが設けられていないため、階段枠の軽量化などに寄与し、作業性を向上させる。 On the other hand, the example of the staircase frame shown in FIG. 2 includes a pair of girders 1a and 1b, a step 2 provided between the girders, and hooks 3a and 3b provided at the upper ends of the girders 1a and 1b. The point is the same as in the example shown in FIG. 1, but a placing jig 5 is provided at the lower end of the girders 1 a and 1 b, and is placed on a lower floor cloth board (not shown). It is an example of the step frame 4b which has. Since the staircase frame 4b is not provided with the hooks 3c and 3d at the lower ends of the girders 1a and 1b, it contributes to weight reduction of the staircase frame and improves workability.
階段枠下部を下階の布板上に載置するタイプの足場用階段枠については、従来、様々なものが開示されている。例えば、特許文献1には、開閉式の床付き布板に対して下段に設置する昇降用階段を布板の下部に沿うよう跳ね上げたとき、この昇降用階段の跳ね上げの状態を保持する結合保持手段を設けた開閉式の布板装置に関する発明が開示されており、その図6などには、桁材の下部にフックがない階段枠の例が示されている。 Various types of staircase frames for scaffolds of the type in which the lower part of the staircase frame is placed on the lower floor cloth board have been disclosed. For example, in Patent Document 1, when a raising / lowering staircase installed at a lower stage with respect to a cloth board with an openable / closable floor is raised along the lower part of the cloth board, the raising / lowering state of the raising / lowering staircase is maintained. An invention relating to an opening / closing type cloth board device provided with a coupling holding means is disclosed, and FIG. 6 shows an example of a staircase frame in which a hook is not provided at the lower part of a girder.
特許文献2には、一対の桁材間に複数のステップを有し、桁材の上端にフックを設け、当該フックを介して桁材の上部を横架材に引掛け、桁材の下部を布板上に載置させる階段枠に関する発明が開示されており、例えば、その図3〜図6にも示されているように、この階段枠では、桁材の下部側面に回転自在な係止ピンを横方向移動自在に取り付け、係止ピンを布板に形成した孔に差し込むこととしている。 Patent Document 2 has a plurality of steps between a pair of girders, a hook is provided at the upper end of the girders, the upper part of the girders is hooked on the horizontal member via the hooks, and the lower part of the girders is An invention relating to a staircase frame to be placed on a cloth board is disclosed. For example, as shown in FIGS. The pins are attached so as to be movable in the lateral direction, and the locking pins are inserted into holes formed in the cloth plate.
特許文献1に開示の発明では、階段枠の下部を下階の布板上に載置するだけで、階段枠の下部を固定するという技術思想がない。従って、この階段枠は、水平方向、垂直方向に力が負荷された場合には、その移動を防止することができない。このため、階段の昇降時、強風時などには、階段枠の浮き上がり、左右への振れなどが生じ、騒音の原因となり、しかも、作業者に危険が及ぶ場合がある。また、特許文献2に開示の発明では、階段枠の下部に係止ピンがあるため、水平方向の移動を防止できるが、垂直方向(浮き上がり方向)の移動を防止することができない。また、特許文献2に開示の発明では、階段枠自体に固定金具を設置するので、設置位置の自由度が小さい。 In the invention disclosed in Patent Document 1, there is no technical idea of fixing the lower portion of the staircase frame by simply placing the lower portion of the staircase frame on the lower floor cloth board. Therefore, the movement of the staircase frame cannot be prevented when a force is applied in the horizontal direction and the vertical direction. For this reason, when the stairs are raised or lowered, or when there is a strong wind, the staircase frame is lifted and shakes to the left and right, which causes noise and may cause danger to the operator. In the invention disclosed in Patent Document 2, since there is a locking pin at the lower part of the staircase frame, horizontal movement can be prevented, but vertical movement (lifting direction) cannot be prevented. Further, in the invention disclosed in Patent Document 2, since the fixing bracket is installed on the staircase frame itself, the degree of freedom of the installation position is small.
本発明は、このような従来技術の問題点を解決するためになされたものであり、足場用階段枠の利用に際し、水平および垂直のいずれの方向についても、その移動を防止することができる足場用階段枠固定金具を提供することを目的とする。 The present invention has been made to solve the above-described problems of the prior art, and a scaffold capable of preventing movement in both horizontal and vertical directions when using a staircase frame for scaffolding. The purpose is to provide a staircase frame fixing bracket.
本発明者らは、階段枠下部を下階の布板上に載置するタイプの足場用階段枠を固定する技術に関して鋭意研究を重ねた結果、本発明を完成させた。 The inventors of the present invention have completed the present invention as a result of intensive studies on a technique for fixing a staircase frame for a scaffold of the type in which the lower part of the staircase frame is placed on a lower-layer cloth board.
本発明は、「足場用階段枠を下階の布板上に保持するための金具であって、軸方向に伸縮自在であり、所定長さで固定することができる水平材と、水平材の両端部に垂直方向に設けられた、下端に水平方向内側に張り出した張出部を備える略弓形のガイド部材とを有することを特徴とする足場用階段枠固定金具。」を要旨とする。
The present invention is a metal fitting for holding a staircase frame for scaffolding on a lower floor cloth board, a horizontal member that is extendable in an axial direction and can be fixed at a predetermined length, and a horizontal member A staircase frame fixing bracket for a scaffold, characterized by having a substantially arcuate guide member provided with a projecting portion projecting inward in the horizontal direction at the lower end , provided vertically at both ends.
上記の水平材は、第1の管と、第1の管内に挿入され、第1の管内を摺動可能に設置された第2の管と、第1の管および第2の管を固定する固定治具とで構成されているものが好ましく、特に、第1の管が、ねじ切りされた貫通孔、または、貫通孔およびナットを有し、第2の管が、その軸方向に溝部を有しており、貫通孔に挿入したボルトを締め付けるとボルトの下端が第2の管の溝部に当接して、水平材の伸縮が抑止され、ボルトを緩めると水平材の伸縮が自由になる構成を有することが望ましい。
The horizontal member is fixed to the first pipe, the second pipe inserted into the first pipe and slidably installed in the first pipe, and the first pipe and the second pipe. In particular, the first pipe has a threaded through hole or a through hole and a nut, and the second pipe has a groove in the axial direction thereof. When the bolt inserted into the through hole is tightened, the lower end of the bolt comes into contact with the groove of the second tube, and the expansion and contraction of the horizontal member is suppressed. When the bolt is loosened, the expansion and contraction of the horizontal member becomes free. It is desirable to have.
上記のガイド部材は、第1の管の一端に取り付けられた第1のガイド部材と、第2の管の一端に取り付けられた第2のガイド部材とで構成されているものが好ましい。 The guide member is preferably composed of a first guide member attached to one end of the first tube and a second guide member attached to one end of the second tube.
本発明の足場用階段枠固定金具は、特に、一対の桁材と、桁材の間に設けられたステップと、桁材の上端に設けられたフックと、桁材の下端に設けられた載置治具とを有する足場用階段枠を固定するのに適している。 The staircase frame fixing bracket for a scaffold according to the present invention particularly includes a pair of girders, a step provided between the girders, a hook provided at the upper end of the girders, and a mounting provided at the lower end of the girders. Suitable for fixing a staircase frame for scaffolding having a mounting jig.
本発明によれば、足場用階段枠の利用に際し、水平および垂直のいずれの方向についても、その移動を防止することができる。 According to the present invention, when using the staircase frame for scaffolding, the movement can be prevented in both the horizontal and vertical directions.
図3は、本発明に係る足場用階段枠固定金具の例を示す図であり、(a)は正面図、(b)は側面図、(c)は上面図をそれぞれ示している。図4は、本発明に係る足場用階段枠固定金具の使用態様の例を示す図であり、(a)は使用態様を正面から観察した図であり、(b)は使用態様を側面から観察した図である。図5は、本発明に係る足場用階段枠固定金具の他の例を示す図であり、(a)は幅木を設置できる足場用階段枠固定金具の例を、(b)は幅木を設置しない足場用階段枠固定金具の例を、(c)は摩擦力で上下方向の移動を抑止する足場用階段枠固定金具の例をそれぞれ示している。 FIG. 3 is a view showing an example of a staircase frame fixing bracket for a scaffold according to the present invention, wherein (a) shows a front view, (b) shows a side view, and (c) shows a top view. FIG. 4 is a view showing an example of a usage mode of the staircase frame fixing bracket for a scaffold according to the present invention, (a) is a diagram of the usage mode observed from the front, and (b) is a usage mode observed from the side. FIG. FIG. 5 is a diagram showing another example of a staircase frame fixing bracket for a scaffold according to the present invention, wherein (a) shows an example of a staircase frame fixing bracket for a baseboard on which a baseboard can be installed, and (b) shows a baseboard. (C) shows an example of a scaffolding staircase frame fixing bracket that suppresses vertical movement by friction force.
図3に示すように、本発明に係る足場用階段枠固定金具6は、軸方向に伸縮自在の水平材7と、水平材7の軸方向長さの移動を抑止する固定治具(ボルト)8と、水平材7の両端部に垂直方向に設けられたガイド部材9a、9bとを有する。上記の水平材7としては、階段枠を固定するのに十分な強度を有し、その長さを自由に変更でき、所望の長さで固定することができる構成であれば特に制限はない。 As shown in FIG. 3, the staircase frame fixing bracket 6 for a scaffold according to the present invention includes a horizontal member 7 that can be expanded and contracted in the axial direction, and a fixing jig (bolt) that suppresses the movement of the horizontal member 7 in the axial direction. 8 and guide members 9a and 9b provided at both ends of the horizontal member 7 in the vertical direction. The horizontal member 7 is not particularly limited as long as it has a strength sufficient to fix the staircase frame, its length can be freely changed, and it can be fixed at a desired length.
例えば、図3に示すように、第1の管7aと、第1の管7a内に挿入され、第1の管7a内を摺動可能に設置された第2の管7bとを有し、第1の管7aおよび第2の管7bを固定する固定治具8とで構成されているものを用いることができる。特に、第1の管7aが、ねじ切りされた貫通孔15を有し、第2の管7bが、その軸方向に溝部11を有しており、貫通孔15に挿入したボルト8を締め付けるとボルト8の下端が第2の管7bの溝部11に当接して、水平材7の伸縮が抑止され、ボルト8を緩めると水平材7の伸縮が自由になる構成を有することが望ましい。なお、図では、ねじ切りされた貫通孔にボルトを挿入する例を示しているが、例えば、貫通孔(ねじ切りされていないものでも良い)に挿入したボルトをナットで固定する構成としてもよい。 For example, as shown in FIG. 3, it has a first tube 7a and a second tube 7b that is inserted into the first tube 7a and is slidably installed in the first tube 7a. What consists of the fixing jig | tool 8 which fixes the 1st pipe | tube 7a and the 2nd pipe | tube 7b can be used. In particular, the first tube 7 a has a threaded through hole 15, the second tube 7 b has a groove 11 in the axial direction thereof, and the bolt 8 inserted into the through hole 15 is tightened. It is desirable that the lower end of 8 is brought into contact with the groove 11 of the second tube 7b to prevent the horizontal member 7 from expanding and contracting, and when the bolt 8 is loosened, the horizontal member 7 can freely expand and contract. In the figure, an example is shown in which a bolt is inserted into a threaded through hole. However, for example, a bolt inserted into a through hole (which may be threaded) may be fixed with a nut.
なお、図3および4では、径の異なる二本の管を用いた例を示しているが、本発明に係る足場用階段枠固定金具6は、このような構成に限定されることはなく、二本以上の管を接続して構成しても良いし、管の断面形状も円形のものに限定されず、角管等の形状であっても良い。また、例えば、水平材の全部または一部にベローズ、バネ等の伸縮材料を用いても良いし、中空の材料だけでなく、中実の材料を用いても良い。さらに、例えば、リップみぞ形鋼、断面が略C字状の閉塞していない管を用いても良い。但し、軽量化、製造コスト等の観点からは、できる限り部品点数は少ないことが望ましく、図3および4に示す構成を採用するのが望ましい。 3 and 4 show examples using two pipes having different diameters, the staircase frame fixing bracket 6 for scaffold according to the present invention is not limited to such a configuration. Two or more tubes may be connected, and the cross-sectional shape of the tube is not limited to a circular shape, and may be a shape such as a square tube. In addition, for example, a stretchable material such as a bellows or a spring may be used for all or a part of the horizontal member, or a solid material may be used instead of a hollow material. Further, for example, a lip groove steel, an unoccluded tube having a substantially C-shaped cross section may be used. However, from the viewpoint of weight reduction, manufacturing cost, etc., it is desirable that the number of parts is as small as possible, and it is desirable to adopt the configuration shown in FIGS.
水平材7は、図3に示すように、落下防止手段10を有していることが望ましい。落下防止手段10は、第1の管7aに設けられた貫通孔に差し込まれたピン10aと、第2の管7bの第1の管7aに挿入される端部に設けられた落下防止ガイド10bとで構成されている。ピン10aは、第1の管7aの内面から突出し、かつ第2の管7bの溝部11には接触しない位置で固定される。これにより、第2の管7bが落下しそうになったときには落下防止ガイド10bがピン10aに接触するので、落下を防止できる。 As shown in FIG. 3, the horizontal member 7 desirably has a fall prevention means 10. The fall prevention means 10 includes a pin 10a inserted into a through-hole provided in the first pipe 7a, and a fall prevention guide 10b provided at an end portion inserted into the first pipe 7a of the second pipe 7b. It consists of and. The pin 10a protrudes from the inner surface of the first tube 7a and is fixed at a position where it does not contact the groove 11 of the second tube 7b. Thereby, when the second pipe 7b is about to fall, the fall prevention guide 10b comes into contact with the pin 10a, so that the fall can be prevented.
ガイド手段としては、例えば、図3に示すように、第1の管7aの一端に取り付けられた第1のガイド部材9aと、第2の管7bの一端に取り付けられた第2のガイド部材9bとで構成されているものを用いることができる。図4に示すように、本発明に係る足場用階段枠固定金具6は、布板12上に載置された階段枠の載置治具5の固定部5a上に取り付けられ、ガイド部材9a、9bを布板12の側面に当接させた後、固定治具8を締め付けることにより、階段枠を固定する。 As the guide means, for example, as shown in FIG. 3, a first guide member 9a attached to one end of the first tube 7a and a second guide member 9b attached to one end of the second tube 7b. Can be used. As shown in FIG. 4, the staircase frame fixing bracket 6 for scaffolds according to the present invention is attached on the fixing portion 5a of the mounting jig 5 of the staircase frame mounted on the cloth plate 12, and the guide member 9a, After contacting 9b with the side surface of the cloth board 12, the fixing jig 8 is tightened to fix the staircase frame.
ガイド部材9a、9bは、階段枠の水平方向(左右方向)および垂直方向(浮き上がり方向)の双方の移動を抑止する部材である。ガイド部材としては、例えば、図4および図5に示すように、その下端に水平方向内側に張り出した張出部14a、14bを有するものを用いる。張出部14a、14bを備えることによって、特に垂直方向により強い力が加わった場合でも、その移動を防止することができる。
The guide members 9a and 9b are members that inhibit the movement of the staircase frame in both the horizontal direction (left-right direction) and the vertical direction (lifting direction). As the guide member, for example, as shown in FIGS. 4 and 5 , a member having projecting portions 14a and 14b projecting inward in the horizontal direction at the lower end thereof is used . By providing the overhanging portions 14a and 14b, the movement can be prevented even when a stronger force is applied in the vertical direction.
図4および図5に示す下端に水平方向内側に張り出した張出部を備える略弓形のガイド部材は、幅木13が装着されることを想定した場合の例である。上記のガイド部材は、第1の管の一端に取り付けられた第1のガイド部材と、第2の管の一端に取り付けられた第2のガイド部材とで構成されているものが好ましい。
Substantially arcuate guide member having a protruding portion which protrudes horizontally inward at the lower end shown in FIGS. 4 and 5 are examples in which it is assumed that the skirting 13 is mounted. The guide member is preferably composed of a first guide member attached to one end of the first tube and a second guide member attached to one end of the second tube.
本発明の足場用階段枠固定金具によれば、足場用階段枠の利用に際し、水平および垂直のいずれの方向についても、その移動を防止することができる。従って、本発明の足場用階段枠固定金具は、特に、一対の桁材と、桁材の間に設けられたステップと、桁材の上端に設けられたフックと、桁材の下端に設けられた載置治具とを有する足場用階段枠を固定するのに適している。 According to the scaffold stairs frame fixing bracket of the present invention, when the scaffold stairs frame is used, the movement can be prevented in both the horizontal and vertical directions. Therefore, the staircase frame fixing bracket for a scaffold according to the present invention is particularly provided at a pair of girders, a step provided between the girders, a hook provided at the upper end of the girders, and a lower end of the girders. It is suitable for fixing a staircase frame for scaffolding having a mounting jig.
1a、1b 桁材
2 ステップ
3a、3b、3c、3d フック
4a、4b 階段枠
5 載置治具
5a 固定部
6 本発明に係る足場用階段枠固定金具
7 水平材
7a 第1の管
7b 第2の管
8 固定治具(ボルト)
9a、9b、9c、9d、9e、9f ガイド部材
10 落下防止手段
10a ピン
10b 落下防止ガイド
11 溝部
12 布板
13 幅木
14a、14b 張出部
15 貫通孔
1a, 1b Girder 2 Steps 3a, 3b, 3c, 3d Hook 4a, 4b Stair frame 5 Mounting jig 5a Fixing part 6 Stair frame fixing bracket 7 for scaffold according to the present invention Horizontal material 7a First pipe 7b Second Tube 8 Fixing jig (bolt)
9a, 9b, 9c, 9d, 9e, 9f Guide member 10 Fall prevention means 10a Pin 10b Drop prevention guide 11 Groove 12 Fabric board 13 Skirting boards 14a, 14b Overhang 15 Through hole
Claims (5)
The scaffolding staircase frame has a pair of girders, a step provided between the girders, a hook provided at the upper end of the girders, and a mounting jig provided at the lower end of the girders. The staircase frame fixing bracket for a scaffold according to any one of claims 1 to 4, wherein
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JP2008011603A JP5203726B2 (en) | 2008-01-22 | 2008-01-22 | Stair frame fixing bracket for scaffolding |
Applications Claiming Priority (1)
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JP2008011603A JP5203726B2 (en) | 2008-01-22 | 2008-01-22 | Stair frame fixing bracket for scaffolding |
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JP2009174138A JP2009174138A (en) | 2009-08-06 |
JP5203726B2 true JP5203726B2 (en) | 2013-06-05 |
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JP2008011603A Expired - Fee Related JP5203726B2 (en) | 2008-01-22 | 2008-01-22 | Stair frame fixing bracket for scaffolding |
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Families Citing this family (1)
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JP6423256B2 (en) * | 2014-11-28 | 2018-11-14 | エスアールジータカミヤ株式会社 | Temporary scaffolding staircase frame |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH046500U (en) * | 1990-05-08 | 1992-01-21 | ||
JP2503042Y2 (en) * | 1991-11-21 | 1996-06-26 | 株式会社大和工業所 | Mobile work scaffolding |
JPH0673243U (en) * | 1993-02-05 | 1994-10-11 | 川鉄機材工業株式会社 | Steel pipe scaffolding staircase frame |
JP3537173B2 (en) * | 1994-01-06 | 2004-06-14 | 株式会社フジタ | Ladder mounting device for steel frame construction, and ladder mounting method for steel frame construction |
JP2002061367A (en) * | 2000-06-06 | 2002-02-28 | Yamada Seisakusho:Kk | Handrail frame |
JP5160143B2 (en) * | 2006-05-25 | 2013-03-13 | 旭化成ホームズ株式会社 | Suspended scaffold structure |
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2008
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