JP3982807B2 - Staircase - Google Patents

Staircase Download PDF

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Publication number
JP3982807B2
JP3982807B2 JP2002213656A JP2002213656A JP3982807B2 JP 3982807 B2 JP3982807 B2 JP 3982807B2 JP 2002213656 A JP2002213656 A JP 2002213656A JP 2002213656 A JP2002213656 A JP 2002213656A JP 3982807 B2 JP3982807 B2 JP 3982807B2
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JP
Japan
Prior art keywords
girders
staircase
scaffolding
locking pin
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2002213656A
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Japanese (ja)
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JP2004052445A (en
Inventor
利信 小峠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nisso Industries Co Ltd
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Nisso Industries Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP2002213656A priority Critical patent/JP3982807B2/en
Publication of JP2004052445A publication Critical patent/JP2004052445A/en
Application granted granted Critical
Publication of JP3982807B2 publication Critical patent/JP3982807B2/en
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  • Ladders (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、枠組足場,支保工,ローリングタワー等の下段側の足場板と上段側の足場板との間に配置して作業者の昇降に利用する階段に関する。
【0002】
【従来の技術】
一般に枠組足場,支保工,ローリングタワー等の構造物には下段側の足場板と上段側の足場板との間に作業者が昇降する梯子状の階段が設けられている。
【0003】
この階段は左右一対の桁材と桁材間に多数隔設したステップとからなり、桁材の上端は建枠の横架材にフックを介して引掛けたり、上段の足場板に固定しているが、桁材の下端は下段の足場板上に当接している場合が多い。
【0004】
何故ならば、構造物によって上下の足場板間のスペースは必ずしも一定でないから、このスペースに対応して階段を設置する場合にはこの階段の傾斜角度を変えながら桁材の下端を水平方向に移動させる必要があるからである。
【0005】
同様に支保工やローリングタワーのように高さが高い構造物では下方から上方に順次多数の階段をじぐざぐ状に向きをかえて配置している。しかも下方の階段から上方の階段に渡る場合には、上方の階段の下部付近の足場板には作業者が通過するマンホールを設ける必要があり、このマンホールのスペース分階段の桁材下端をずらして足場板に当接している。
【0006】
そして、上記のように階段の桁材下端を足場板上に当接する場合は、例えば、実公平8-3585号公報に示すように桁材の下端にゴム等のすべり止め材を設け、階段の下部が足場板上で滑らないようにしている。
【0007】
【発明が解決しようとする課題】
しかしながら、上記のように階段の下端にすべり止め材を設けても固定式では無いから風圧,地震,その他の外力で階段に大きな負荷が作用した時にはこのすべり止め材は滑ってしまうおそれがあり、作業者にとって不安であり、危険である。
【0008】
又、ゴム等のすべり止め材では長期間の使用中に表面がつるつるになったり、変形してしまいすべり止め効果が減少してしまうおそれがある。
【0009】
そこで本発明の目的は、桁材の下端を足場板上で任意の位置まで移動して傾斜角度を任意に設定できると共に所定の位置で確実に固定して滑りを防止できる階段を提供することである。
【0010】
【課題を解決するための手段】
上記の目的を達成するため、本発明の手段は、一対の桁材間に複数のステップを隔設し、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、桁材の下部を足場板に載置させる階段において、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付け、当該係止ピンを足場板に形成した孔に着脱自在に差し込むことを特徴とするものである。
【0011】
この場合、桁材の下部にガイドボルトを設け、桁材の側面にガイド板を横方向及び回転方向移動自在に配置し、ガイド板には横方向に沿う長孔を形成すると共に端部に係止ピンの基端は回転自在に軸支し、ガイド板を長孔を介してガイドボルトに差し込み且つガイドボルトに螺合したナットと桁材側面とで挟持させているのが好ましい。
【0012】
【発明の実施の形態】
以下、本発明の実施の形態を図にもとづいて説明する。
【0013】
本発明の階段Aは図1に示す枠組足場B、その他の支保工、ローリングタワーにおける上段の足場板1と下段の足場板2との間に配置させ、作業者がこの階段Aを介して上下段の足場板1,2間を昇降するものである。
【0014】
上下段の足場板1,2が多段階に組付けられている場合は、下方の階段Aに対して上方の階段の傾斜角を下方の階段と反対方向に向けて配置して互い違いに組付けている。
【0015】
図1は階段Aを枠組足場Bに設置した実施の形態を示す。
【0016】
枠組足場Bは一対の建枠3,3と建枠3,3間に架設した上段の足場板1と下段の足場板2とからなり、建枠3は建材4と建材4と直交する横架材5とで構成されている。
【0017】
階段Aは上端のフック6を介して上方の横架材5に着脱自在に引掛けられ、階段Aの下端は下段の足場板2上に載置すると共に後述する係止ピン7を介して下段の足場板2に形成した孔に着脱自在に差し込んでいる。
【0018】
枠組足場B、支保工、ローリングタワーによっては上下段の足場板1,2間のスペースが異なる場合は、階段Aの下端を水平方向にスライドして角度調整する。更に枠組足場Bで傾斜方向に沿って階段Aを連続して配置する場合や、ローリングタワーでは多数の足場板が存在して多数の階段を上下方向に沿ってじぐざぐ状に配置させる場合には、階段Aの下部附近には作業者が通過する踊場、マンホールが形成される。即ち、図1に示すように、階段Aの下端と左側の建材3との間に空間Cを形成し、この空間Cを踊場として利用したり、この空間Cに対応して足場板にマンホールを切欠き、踊場又はマンホールを通過した作業者がそのまま階段Aに昇ることができるようになっている。逆に階段Aをおりてきた人が踊場又はマンホールから更に下方に移動できるようにしている。
【0019】
本発明に係る階段Aは、一対の桁材8,8間に複数のステップ9を隔設し、桁材8の上端にフック6を設け、当該フック6を介して桁材8の上部を横架材5に引掛け、桁材8の下部を足場板2上に載置させるものであり、そして桁材8の下部側面に回転自在な係止ピン7を横方向移動自在に取付け、当該係止ピン7を足場板2に形成した孔に着脱自在に差し込むことを特徴とする。
【0020】
係止ピン7は直接桁材8の下部に取り付けても良いが、下記のような取付手段を介して取り付けるのが好ましい。即ち、図3乃至図6に示すように、桁材8の下部にガイドボルト19を設け、桁材8の側面にガイド板10を横方向及び回転方向移動自在に配置し、ガイド板10には横方向に沿う長孔11を形成すると共にこのガイド板10の端部に係止ピン7の基端7aを軸12を介して回転自在に軸支し、ガイド板10を長孔11を介してガイドボルト19に差し込み且つガイドボルト19に螺合したナット13と桁材側面とで挟持させている。
【0021】
各桁材8,8には上方に起立する手摺14が設けられている。即ち、手摺14は取付部材20を介して各桁材8,8に折り畳み自在に結合されている。
【0022】
取付部材20は図7、図8に示すように、断面コ字状の長尺なソケット21と、ソケット21に設けた固定の挟持片23と、同じくソケット21に設けた挟持片23に対向して設けた上下スライド自在な可動挟持片24と、ソケット21の長孔22に移動自在に挿入した両効きの楔25と、ソケット21に設けられて可動挟持片24を下方に附勢するスプリング27とで構成されている。
【0023】
ソケット21内には軸28を介して手摺14の脚部が回転自在に挿入され、この手摺14はソケット21と上記脚部に設けた取付孔30,29に挿入した折り畳み自在なピン31で垂直に起立され、ピン31を抜いた時軸28を支点にして回転して桁材8側に折り畳みできるようになっている。
【0024】
ソケット21を桁材8に取付ける場合は次の操作を行なう。即ち上方の挟持片23を桁材8の上端に引掛け、次いで楔25を図7の矢印J又はK方向に押し込むことにより楔25を可動挟持片24の隙間26を移動させ、楔25のテ‐パ面で当該可動挟持片24をスプリング27に抗して図8の矢印L方向に押し上げ、上下一対の挟持片23,24で桁材8を挟持し、これにより楔25のロックでソケット21がはずれないようにするものである。
【0025】
足場板1,2には巾木を取り付ける孔が形成されており、この孔を利用して係止ビン7を差し込み、桁材8を足場板1,2上に固定するものであるが、この孔を複数形成しておいて任意の孔に係止ピン7を挿入するようにしておいても良い。即ち、任意の孔に係止ピン7を挿入できるようにガイド板10は長孔11とガイドボルト19を介して横方向及び回転方向に移動できるようになっている。
【0026】
例えば、図5に示すように、ガイド板10はガイドボルト19を介して矢印Xに示すように水平方向に移動でき、又ガイドボルト19を支点にして矢印Y,Z方向に回転させ、これにより係止ピン7の位置を実線で示す位置から点線で示す位置まで横方向に変位でき、この範囲で任意の孔に係止ピン7を差し込むようになっている。
【0027】
このように、本発明の階段では係止ピン7を足場板1,2側の孔に差し込むので階段Aの下端が滑るのが防止される。又、係止ピン7は桁材8に対して左右にスライドできるから差し込んだ孔に対応して階段の傾斜角を任意に調整できる。
【0028】
【発明の効果】
本発明によれば、次の効果がある。
1)桁材の下部に係止ピンを直接又はガイド板を介して取り付けているので、この係止ピンを足場板の孔に差し込むことにより桁材の下部が固定でき、振動、風圧等の外部負荷があっても階段の下部は滑らず、安全であり、作業者の不安感を解消できる。
2)係止ピンは回転しながら、又は横方向にスライドしながら横方向の位置を変位できるから足場板側の任意の位置の孔に差し込みでき、これにより桁材の下部を足場板上に沿って横方向にずらして固定でき、併せて階段の傾斜角を変化させることができる。
【図面の簡単な説明】
【図1】本発明に係る階段を組付けた枠組足場の側面図である。
【図2】階段の拡大正面図である。
【図3】ガイド板と係止ピンの拡大側面図である。
【図4】図3の背面図である。
【図5】ガイド板の移動状態を示す側面図である。
【図6】図3の正面図である。
【図7】手摺の取付装置の拡大側面図である。
【図8】図7の正面図である。
【符号の説明】
1,2 足場板
5 横架材
1 フック
2 係止ビン
3 桁材
4 ステップ
5 ガイド板
6 長孔
13 ナット
19 ガイドボルト
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a staircase that is disposed between a lower scaffolding plate and an upper scaffolding plate, such as a frame scaffold, a support, and a rolling tower, and is used for raising and lowering an operator.
[0002]
[Prior art]
Generally, a structure such as a framework scaffold, a supporting work, and a rolling tower is provided with a ladder-like staircase in which an operator ascends and descends between a lower scaffolding board and an upper scaffolding board.
[0003]
This staircase consists of a pair of left and right girders and a number of steps between the girders. The upper end of the girders is hooked to the horizontal frame of the building frame via a hook or fixed to the upper scaffolding plate. However, the lower end of the girder is often in contact with the lower scaffolding plate.
[0004]
This is because the space between the upper and lower scaffolding plates is not always constant depending on the structure, so when installing stairs corresponding to this space, the lower end of the beam is moved horizontally while changing the inclination angle of this stairs. It is necessary to make it.
[0005]
Similarly, structures such as supporting works and rolling towers are arranged in such a way that they are gradually turned up and down from the bottom to the top. In addition, when crossing from the lower stairs to the upper stairs, it is necessary to provide a manhole through which the operator passes on the scaffolding plate near the lower part of the upper stairs. It is in contact with the scaffold board.
[0006]
And when contacting the lower end of the spar material on the scaffolding plate as described above, for example, as shown in Japanese Utility Model Publication No. 8-3585, an anti-slip material such as rubber is provided at the lower end of the spar material, The bottom does not slip on the scaffolding board.
[0007]
[Problems to be solved by the invention]
However, even if anti-slip material is provided at the lower end of the stairs as described above, it is not a fixed type, so this anti-slip material may slip when a large load is applied to the stairs due to wind pressure, earthquake, or other external force. Anxious and dangerous for workers.
[0008]
In addition, when the anti-slip material such as rubber is used for a long period of time, the surface may become slippery or may be deformed to reduce the anti-slip effect.
[0009]
Therefore, an object of the present invention is to provide a stair that can be set at an arbitrary inclination angle by moving the lower end of the beam member to an arbitrary position on the scaffolding plate and can be securely fixed at a predetermined position to prevent slippage. is there.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the means of the present invention includes a plurality of steps provided between a pair of girders, a hook provided at the upper end of the girder, and the upper part of the girder being placed on the horizontal member via the hook. In the staircase where the lower part of the girder is placed on the scaffolding plate, a rotatable locking pin is attached to the lower side surface of the girder so as to move laterally, and the locking pin is inserted into the hole formed in the scaffolding plate. It is characterized by being detachably inserted.
[0011]
In this case, a guide bolt is provided at the lower part of the girder, the guide plate is arranged on the side of the girder so as to be movable in the lateral direction and the rotational direction, and a long hole is formed in the guide plate along the lateral direction. It is preferable that the base end of the stop pin is rotatably supported, and the guide plate is inserted into the guide bolt through the long hole and sandwiched between the nut and the side surface of the beam member that are screwed to the guide bolt.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
The staircase A of the present invention is arranged between the upper scaffolding plate 1 and the lower scaffolding plate 2 in the framework scaffold B shown in FIG. It moves up and down between the lower scaffolding plates 1 and 2.
[0014]
When the upper and lower scaffolding plates 1 and 2 are assembled in multiple stages, the upper stairs are inclined in the opposite direction to the lower stairs with the lower stairs A. ing.
[0015]
FIG. 1 shows an embodiment in which a staircase A is installed on a frame scaffold B. FIG.
[0016]
The frame scaffold B is composed of a pair of building frames 3 and 3 and an upper scaffolding plate 1 and a lower scaffolding plate 2 installed between the building frames 3 and 3, and the building frame 3 is horizontally mounted perpendicular to the building material 4 and the building material 4. It is comprised with the material 5. FIG.
[0017]
The staircase A is detachably hooked to the upper horizontal member 5 via the hook 6 at the upper end, and the lower end of the staircase A is placed on the lower scaffolding plate 2 and the lower step via the locking pin 7 described later. Is inserted into a hole formed in the scaffold plate 2 in a detachable manner.
[0018]
If the space between the upper and lower scaffolding plates 1 and 2 differs depending on the frame scaffold B, the supporting work, and the rolling tower, the angle is adjusted by sliding the lower end of the stairs A in the horizontal direction. Furthermore, when the staircase A is continuously arranged along the inclination direction on the frame scaffold B, or when many scaffolding boards exist in the rolling tower and many staircases are arranged along the vertical direction. In the vicinity of the lower part of the staircase A, a dance hall and a manhole are formed. That is, as shown in FIG. 1, a space C is formed between the lower end of the staircase A and the building material 3 on the left side, and this space C is used as a landing, or a manhole is formed on the scaffolding plate corresponding to this space C. The worker who has passed through the notch, the dance hall or the manhole can ascend to the stairs A as it is. On the contrary, the person who went down the stairs A can move further down from the landing or manhole.
[0019]
In the staircase A according to the present invention, a plurality of steps 9 are provided between a pair of beam members 8, 8, a hook 6 is provided at the upper end of the beam member 8, and the upper part of the beam member 8 is laterally passed through the hook 6. The lower part of the girder member 8 is placed on the scaffolding plate 2 by being hooked on the frame member 5, and a rotatable locking pin 7 is attached to the lower side surface of the girder member 8 so as to be movable in the lateral direction. The stop pin 7 is detachably inserted into a hole formed in the scaffold plate 2.
[0020]
The locking pin 7 may be attached directly to the lower part of the girder 8, but is preferably attached via the following attachment means. That is, as shown in FIGS. 3 to 6, a guide bolt 19 is provided at the lower part of the beam member 8, and the guide plate 10 is disposed on the side surface of the beam member 8 so as to be movable in the lateral direction and the rotational direction. A long hole 11 is formed along the lateral direction, and the base end 7a of the locking pin 7 is rotatably supported on the end of the guide plate 10 via a shaft 12, and the guide plate 10 is supported via the long hole 11. The nut 13 inserted into the guide bolt 19 and screwed into the guide bolt 19 is held between the side surfaces of the beam member.
[0021]
Each girder 8, 8 is provided with a handrail 14 standing up. That is, the handrail 14 is foldably coupled to the girders 8 and 8 via the attachment member 20.
[0022]
As shown in FIGS. 7 and 8, the mounting member 20 is opposed to a long socket 21 having a U-shaped cross section, a fixed clamping piece 23 provided in the socket 21, and a clamping piece 23 provided in the socket 21. A movable holding piece 24 slidable up and down, a double-effect wedge 25 movably inserted into the elongated hole 22 of the socket 21, and a spring 27 provided on the socket 21 for biasing the movable holding piece 24 downward. It consists of and.
[0023]
A leg portion of the handrail 14 is rotatably inserted into the socket 21 via a shaft 28, and the handrail 14 is vertically connected by a foldable pin 31 inserted into the socket 21 and mounting holes 30 and 29 provided in the leg portion. When the pin 31 is pulled out, it can be rotated about the shaft 28 as a fulcrum so that it can be folded to the girder 8 side.
[0024]
When the socket 21 is attached to the girder 8, the following operation is performed. That is, the upper holding piece 23 is hooked on the upper end of the beam member 8 and then the wedge 25 is pushed in the direction of the arrow J or K in FIG. 7 to move the wedge 25 through the gap 26 of the movable holding piece 24. The movable clamping piece 24 is pushed up against the spring 27 in the direction of the arrow L in FIG. 8 on the surface, and the girder 8 is clamped by the pair of upper and lower clamping pieces 23, 24. It is intended to prevent from falling off.
[0025]
A hole for attaching a baseboard is formed in the scaffolding plates 1 and 2, and a locking bin 7 is inserted using this hole to fix the girder 8 on the scaffolding plates 1 and 2. A plurality of holes may be formed and the locking pin 7 may be inserted into any hole. That is, the guide plate 10 can be moved in the lateral direction and the rotational direction via the long hole 11 and the guide bolt 19 so that the locking pin 7 can be inserted into an arbitrary hole.
[0026]
For example, as shown in FIG. 5, the guide plate 10 can be moved in the horizontal direction as indicated by an arrow X via a guide bolt 19, and rotated in the directions of the arrows Y and Z with the guide bolt 19 as a fulcrum. The position of the locking pin 7 can be laterally displaced from the position indicated by the solid line to the position indicated by the dotted line, and the locking pin 7 is inserted into an arbitrary hole within this range.
[0027]
Thus, in the staircase of the present invention, the locking pin 7 is inserted into the holes on the scaffolding plates 1 and 2 side, so that the lower end of the staircase A is prevented from slipping. Further, since the locking pin 7 can slide to the left and right with respect to the girder 8, the inclination angle of the stairs can be arbitrarily adjusted in accordance with the inserted hole.
[0028]
【The invention's effect】
The present invention has the following effects.
1) Since the locking pin is attached to the lower part of the beam material directly or via a guide plate, the lower part of the beam material can be fixed by inserting this locking pin into the hole of the scaffolding plate, and the outside of vibration, wind pressure, etc. Even if there is a load, the lower part of the stairs does not slip, it is safe, and the operator's anxiety can be resolved.
2) Since the locking pin can be displaced in the lateral direction while rotating or sliding in the lateral direction, it can be inserted into the hole at any position on the side of the scaffolding board. Can be shifted and fixed in the horizontal direction, and the inclination angle of the stairs can be changed.
[Brief description of the drawings]
FIG. 1 is a side view of a framework scaffold with stairs according to the present invention.
FIG. 2 is an enlarged front view of a staircase.
FIG. 3 is an enlarged side view of a guide plate and a locking pin.
4 is a rear view of FIG. 3. FIG.
FIG. 5 is a side view showing a moving state of the guide plate.
6 is a front view of FIG. 3. FIG.
FIG. 7 is an enlarged side view of a handrail attachment device.
FIG. 8 is a front view of FIG. 7;
[Explanation of symbols]
1, 2 Scaffold plate 5 Horizontal material 1 Hook 2 Locking bin 3 Girder material 4 Step 5 Guide plate 6 Long hole 13 Nut 19 Guide bolt

Claims (2)

一対の桁材間に複数のステップを隔設し、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、桁材の下部を足場板上に載置させる階段において、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付け、当該係止ピンを足場板に形成した孔に着脱自在に差し込むことを特徴とする階段。A plurality of steps are provided 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 placed on the scaffolding plate. In the staircase to be placed, a rotatable locking pin is attached to the lower side surface of the girder so as to be movable in the lateral direction, and the locking pin is detachably inserted into a hole formed in the scaffolding plate. 桁材の下部にガイドボルトを設け、桁材の側面にガイド板を横方向及び回転方向移動自在に配置し、ガイド板には横方向に沿う長孔を形成すると共に端部に係止ピンの基端を回転自在に軸支し、ガイド板を長孔を介してガイドボルトに差し込み且つガイドボルトに螺合したナットと桁材側面とで挟持させている請求項1に記載の階段。A guide bolt is provided at the lower part of the girders, and a guide plate is arranged on the side surface of the girders so as to be movable in the lateral direction and the rotational direction. The staircase according to claim 1, wherein the base end is rotatably supported, and the guide plate is sandwiched between a nut inserted into the guide bolt through the long hole and screwed to the guide bolt and the side face of the beam member.
JP2002213656A 2002-07-23 2002-07-23 Staircase Expired - Lifetime JP3982807B2 (en)

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