JPH0874414A - Device and method for fitting light alloy ladder for steel frame construction - Google Patents

Abstract

PURPOSE: To eliminate the trouble that a conventional device for fitting a light alloy ladder to be used for the steel frame construction needs a ladder fitting rod except for steel frame columns and that the whole structure is so bulky and complex that the secure and easy fitting is hard, and to obtain the method and device for strongly fitting the light alloy ladder. CONSTITUTION: A steel pipe at the same length with a step 5 is loosely inserted into a cavity 6 of the step 5 of a light alloy ladder 2, and an engaging fitting 15 having an engaging hook, which is to be engaged with a right and a left columns of this ladder 2, and a thin engagement surface 14, which is inclined at about 45 degree toward the inside and which is wider than a bolt insertion part 15a, is loosely inserted into the other end of a strap bolt 10 having a through bolt 11 inserting bolt hole. This engaging fitting 15 is fastened by a nut 16.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、鉄骨建方時の昇降用
に使用する軽合金梯子を地組み時に予め取付ける装置お
よびその取付方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for mounting a light alloy ladder used for elevating and lowering when constructing a steel frame in advance during grounding.

【０００２】[0002]

【従来の技術】従来、鉄骨建方時において昇降用に使用
される梯子としては、（１）鉄骨柱２１にＣ型クリップ
２２、２３で固定したスライド杆２４の端部に固着した
連結アーム２５の先端部の連結杆２６をはしご２７の踏
桟２８内に嵌入し、スライド杆２４上を移動できる他方
の連結アーム２９の連結杆３０を踏桟２８の他端内に嵌
入することによって、はしご２７を鉄骨柱２１に取付け
取外し可能にしたもの（特開昭６２−４１８６７号公報
参照）、（２）鉄骨角柱３１の直交する２面に内角で当
接するＬ形板部材３２と、Ｌ形板部材３２の外面に一端
部が接合され、鉄骨角柱３１の対角線方向に水平に延出
する２本の平行腕部材３３、３３と、両端部がＬ形板部
材３２に直交して中央部がＬ形板部材３２の頂角部３４
に接合する横部材３５と、両腕部材３３、３３の端部に
垂直に接合される梯子支持部材３６からなる固定金具を
鉄骨角柱３１を取り巻くようにチェーン等の固縛部材３
７で固定するようにし、仮設梯子３８を梯子支持部材３
６に取付けるには番線等で結着するようにたもの（特公
平５−５９２３６号公報参照）が知られている。2. Description of the Related Art Conventionally, as a ladder used for elevating and lowering when constructing a steel frame, (1) a connecting arm 25 fixed to an end of a slide rod 24 fixed to a steel column 21 with C-shaped clips 22 and 23. The connecting rod 26 at the tip of the ladder is fitted into the step bar 28 of the ladder 27, and the connecting rod 30 of the other connecting arm 29 that can move on the slide bar 24 is fitted into the other end of the step bar 28. 27, which is attached to and detached from the steel frame column 21 (see Japanese Patent Laid-Open No. 62-41867), and (2) L-shaped plate member 32 and L-shaped plate 32 which come into contact with the two orthogonal surfaces of the steel rectangular column 31 at an internal angle. One end portion is joined to the outer surface of the member 32, and two parallel arm members 33, 33 that extend horizontally in the diagonal direction of the steel prism 31 and both end portions are orthogonal to the L-shaped plate member 32 and the central portion is L The apex angle portion 34 of the shaped plate member 32
A fixing member composed of a lateral member 35 joined to the arm member and a ladder support member 36 joined vertically to the end portions of both arm members 33, 33 is secured to a steel frame prism 31 so as to surround the steel prism 31 with a fastening member 3 such as a chain.
7 and fix the temporary ladder 38 to the ladder support member 3
In order to attach to No. 6, there is known one in which a wire or the like is used for binding (see Japanese Patent Publication No. 5-59236).

【０００３】[0003]

【発明が解決しようとする課題】従来の前記（１）のも
のは、はしご２７以外に鉄骨柱２１にＣ形クリップ２
２、２３でスライド杆２４を取付ける必要があり、かつ
連結杆２６、３０と踏桟２８との結合が単に貫入するだ
けであるので、重量物等を担いではしご２７を上る時、
踏桟２８の端部に偏ったり横方向の力が働いた時に踏桟
２８から連結杆２６、３０が外れる恐れがあり、または
しご２７取付け用の連結アーム２５、２９がかさ張るの
で梁連結用のブラケット部分に取付ける作業がしにくい
などの欠点があり、また前記（２）のものは、固定金具
の構成材が全てＬ形鋼のような部材を使用し、それらの
構成材の結合は全てその端部を溶接によって固着されて
いるので、溶接作業を正確に行うのに手数が掛かり、か
つ強度的にみて重量物を支持するには十分でない恐れが
あり、固定金具と鉄骨柱３１との結合はチェーン等の固
縛材３７を用い、梯子支持部材３６と仮設梯子３８とは
番線等で結着するのでそれらの結合を行うのに手間がか
かるとともに確実に結合するのは容易でない欠点があっ
た。In the conventional (1), in addition to the ladder 27, the C-shaped clip 2 is attached to the steel column 21.
Since it is necessary to mount the slide rod 24 with 2, 23, and the connection between the connecting rods 26, 30 and the step rail 28 simply penetrates, when climbing the ladder 27 while carrying a heavy object,
The connecting rods 26, 30 may come off from the step 28 when the end of the step 28 is biased or a lateral force is exerted, or the connecting arms 25, 29 for attaching the ladder 27 are bulky so that the beam is connected. There is a drawback that it is difficult to attach it to the bracket part of the above, and in the above (2), all the components of the fixing metal fittings are members such as L-shaped steel, and all the connections of these components are connected. Since the end portion is fixed by welding, it takes time to perform the welding work accurately, and there is a possibility that it may not be sufficient to support a heavy object in terms of strength. For the connection, a lashing member 37 such as a chain is used, and the ladder support member 36 and the temporary ladder 38 are connected by a tie line or the like. Therefore, it is troublesome to connect them and it is not easy to surely connect them. there were.

【０００４】この発明は、前記の欠点を解消し、梯子の
外部にスライド杆等の柱材を必要とせず、梯子のステッ
プの空洞を利用してこの空洞にスチールパイプを緩挿
し、梯子の柱に係合する係合鈎とボルト孔を有する羽子
板ボルトの他端に係合金具を貫入して締めつけることに
より鉄骨柱に軽合金梯子を強固に、かつ簡単に取付け取
外すことができる取付装置およびその取付方法を得るこ
とを課題とするものである。The present invention solves the above-mentioned drawbacks and does not require a column member such as a slide rod outside the ladder, and a steel pipe is loosely inserted into this cavity by utilizing the cavity of the step of the ladder to form the column of the ladder. An attachment device and a light alloy ladder that can be firmly and easily attached to and detached from a steel column by inserting an engaging metal fitting into the other end of a battledore bolt having an engaging hook and a bolt hole that engages with The subject is to obtain a mounting method.

【０００５】[0005]

【課題を解決するための手段】前記の課題を解決するた
めにこの発明は、軽合金梯子２のステップ５の空洞６内
にステップ５と同長のスチールパイプ７を緩挿し、前記
梯子２の左右の柱４に係合する係合鈎８と、通しボルト
１１挿通用ボルト孔９を有する羽子板ボルト１０の他端
に内側に向って傾斜した係合金具１５を緩挿し、この係
合金具１５をナット１６で締付ける鉄骨建方用軽合金梯
子取付装置、羽子板ボルト１０の他端に内側に向かって
４５度程度傾斜したボルト挿通部１５ａより広幅で薄肉
の係合面１４を有する係合金具１５を緩挿した前記の鉄
骨建方用軽合金梯子取付装置および前記各梯子取付装置
を、鉄骨建方時に鉄骨柱１のブラケット３に取付ける鉄
骨建方用軽合金梯子取付方法の手段を講じるものであ
る。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a steel pipe 7 having the same length as that of step 5 is loosely inserted into a cavity 6 of step 5 of a light alloy ladder 2 to make the ladder 2 The engaging hooks 8 that engage the left and right columns 4 and the other ends of the battledore bolts 10 having the bolt holes 9 for inserting the through bolts 11 are loosely inserted with the engaging metal fittings 15 inclined inward. A light alloy ladder mounting device for steel frame erection that tightens the nut 16 with an engaging metal fitting 15 having an engaging surface 14 that is wider than the bolt insertion portion 15a that is inclined toward the inside by about 45 degrees at the other end of the battledore bolt 10 The light-alloy ladder mounting device for steel-frame erection and the above-mentioned each ladder-mounting device that are loosely inserted are mounted on the bracket 3 of the steel-frame pillar 1 during steel-frame erection, and a means of a light-alloy ladder for steel-frame erection is installed. is there.

【０００６】[0006]

【実施例】この発明の実施例について図面を参照して説
明する。その概要は第３図に示すように、鉄骨建方に際
して、まず鉄骨柱１を地組するが、この地組を行う時に
同時に仮設の軽合金梯子２をこの発明の装置を用いて鉄
骨柱１のブラケット３に強固に取り付けるものである。
その詳細については、図１（Ａ）、（Ｂ）および図２に
示されている。図１（Ａ）において、１はＨ形鋼からな
る鉄骨柱で、１ａはそのフランジを示し、４は仮設の軽
合金梯子２の左右の柱である。軽合金梯子２の柱４の間
には図１（Ｂ）および図４（Ａ）に示すように、その断
面形状が上面は水平でその下方はほぼ楕円形としたステ
ップ５が取付けられており、その端部は図１（Ａ）およ
び図４（Ａ）に示すようにステップ５の断面形状の孔６
が貫通した状態のままとなっている。この孔６内に図２
および図４（Ａ）に示すようにステップ５と同長のスチ
ールパイプ７を緩挿する。一方、図４（Ｂ）に示すよう
に軽合金梯子２の柱４の幅と一致するコ字形の係合鈎８
を有し、その側面にボルト孔９を設けた羽子板ボルト１
０を用意し、このボルト孔９からスチールパイプ７中に
通しボルト１１を通して相対する羽子板ボルト１０のボ
ルト孔９を貫通させ、その貫通端部をワッシャ１２を介
してナット１３締めする（図２参照）。この際ステップ
５の両端部に沿わせた羽子板ボルト１０をナット１３で
強く締着しても、ステップ５の中にスチールパイプ７が
挿通されているので、その締着力は対圧縮力の大きいス
チールパイプ７に支承されて軽合金製のステップ５の形
状を損なうことがなく羽子板ボルト１０の係合鈎８を強
固にステップ５に係止させることができる。羽子板ボル
ト１０の係合鈎８とは反対側にあるボルトの端部には、
図１（Ａ）に示すように内側に向かって約４５度に傾斜
したボルト挿通部１５ａより広幅で薄肉の係合面１４を
有する係合金具１５が緩挿され、その外側から蝶形ナッ
ト１６をねじ込むことにより羽子板ボルト１０はＨ形鋼
からなる鉄骨柱１のフランジ部１ａに軽合金梯子２を強
固に取付けることができる。特に建方に際しては地組時
に鉄骨柱１は鉄骨柱１に取付ける梁１７の取付部として
ブラケット３が溶接された状態でクレーンで引き上げら
れるので、建方時の昇降に必要な軽合金梯子２は地組の
際に鉄骨柱１のブラケット３に取付けるようにする。Embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 3, when constructing a steel frame, first, the steel column 1 is erected, but at the same time when this erection is performed, the temporary light alloy ladder 2 is used to construct the steel column 1 using the device of the present invention. It is firmly attached to the bracket 3.
The details are shown in FIGS. 1A, 1B and 2. In FIG. 1 (A), 1 is a steel frame column made of H-shaped steel, 1 a is its flange, and 4 is the left and right columns of a temporary light alloy ladder 2. As shown in FIG. 1 (B) and FIG. 4 (A), a step 5 having a cross-sectional shape whose upper surface is horizontal and whose lower surface is substantially elliptical is attached between the pillars 4 of the light alloy ladder 2. , Its end is a hole 6 having a cross-sectional shape of step 5 as shown in FIGS.
Remains pierced. In this hole 6
Then, as shown in FIG. 4A, the steel pipe 7 having the same length as that of the step 5 is loosely inserted. On the other hand, as shown in FIG. 4 (B), a U-shaped engaging hook 8 that matches the width of the pillar 4 of the light alloy ladder 2
And a battledore bolt 1 having a bolt hole 9 on its side surface
0 is prepared, the bolt hole 9 is passed through the steel pipe 7 through the bolt 11, and the bolt hole 9 of the opposing battledore bolt 10 is penetrated, and the penetrating end is tightened with the nut 13 through the washer 12 (see FIG. 2). ). At this time, even if the battledore bolts 10 along both ends of step 5 are strongly tightened with the nuts 13, the steel pipe 7 is inserted into the step 5, so that the tightening force is steel having a large anti-compression force. The engaging hook 8 of the battledore plate bolt 10 can be firmly locked to the step 5 without impairing the shape of the step 5 made of a light alloy supported by the pipe 7. At the end of the bolt on the side opposite to the engaging hook 8 of the battledore bolt 10,
As shown in FIG. 1A, an engagement fitting 15 having an engagement surface 14 that is wider and thinner than a bolt insertion portion 15a that is inclined inwardly at about 45 degrees is loosely inserted, and a butterfly nut 16 is inserted from the outside. By screwing in, the battledore bolt 10 can firmly attach the light alloy ladder 2 to the flange portion 1a of the steel column 1 made of H-shaped steel. Especially when erection, the steel pillar 1 is erected by a crane when the bracket 3 is welded to the steel pillar 1 as a mounting portion of the beam 17 to be mounted on the steel pillar 1, so that the light alloy ladder 2 required for elevating and lowering during erection It is attached to the bracket 3 of the steel frame column 1 when it is assembled.

【０００７】[0007]

【発明の効果】請求項１の発明は、梯子のステップの空
洞を利用するので、柱の周辺に余分な柱材を必要とせ
ず、ステップの空洞中にステップと同長のスチールパイ
プを緩挿したので、ステップの柱に羽子板ボルトの係合
鈎を係合し係合金具をブラケットのフランジに係合させ
ナットで強固に締付けても、対圧縮力の大きいスチール
パイプによってその締着力は支承され、軽合金製のステ
ップが変形する等の恐れが全くなく、ステップ自体が鉄
骨柱のフランジに取付けられたと同じ状態であるので梯
子が下にずり落ちることがなく、軽合金梯子を確実かつ
強固に取付けることができるとともに、その取外しもナ
ットを手等でねじ戻すことにより簡単に他の部分に転用
することができる。請求項２の発明は、係合面は薄肉で
あるがボルト挿通部よりも広幅であるので係合金具全体
を軽量小型にすることができ、かつ係合面が４５度程度
であるので鉄骨柱のフランジの厚さの大小があっても良
く適合して締付け操作を行うことが可能である。請求項
３の発明は、軽合金梯子が余分な柱材等を有せず簡単な
構造であるので、鉄骨建方に際して、鉄骨柱の地組を行
うと同時に梁取付け用ブラケットに軽合金梯子を他の作
業の邪魔にならず簡単に取付け、取外しができ、一本の
梯子であっても他の階層に容易に転用することができ
る。According to the invention of claim 1, since the cavity of the step of the ladder is utilized, an extra column material is not required around the column, and the steel pipe of the same length as the step is loosely inserted in the cavity of the step. Therefore, even if the engaging hook of the battledore bolt is engaged with the pillar of the step and the engaging metal fitting is engaged with the flange of the bracket and tightened firmly with the nut, the tightening force is supported by the steel pipe with a large compressive force. , There is no fear that the light alloy step will be deformed, etc., and the step itself is in the same state as it was attached to the flange of the steel column, so the ladder does not slide down and the light alloy ladder is securely and firmly attached. In addition, the nut can be easily removed to another part by unscrewing the nut with a hand or the like. According to the invention of claim 2, since the engaging surface is thin, but wider than the bolt insertion portion, the entire engaging fitting can be made light and small, and the engaging surface is about 45 degrees, so the steel column Even if the thickness of the flange is large or small, the tightening operation can be performed with good conformity. According to the invention of claim 3, since the light alloy ladder has a simple structure without an extra column material or the like, at the time of constructing the steel frame, the light alloy ladder is mounted on the beam mounting bracket at the same time when the steel column is erected. It can be easily installed and removed without disturbing other work, and even one ladder can be easily diverted to other layers.

【図面の簡単な説明】[Brief description of drawings]

【図１】この発明の１実施例を示すもので、（Ａ）は縦
断面図、（Ｂ）は（Ａ）のＢ−Ｂ線における平面図であ
る。FIG. 1 shows an embodiment of the present invention, (A) is a longitudinal sectional view, and (B) is a plan view taken along the line BB of (A).

【図２】同じく一部の拡大縦断平面図である。FIG. 2 is a partially enlarged vertical plan view of the same.

【図３】同じく軽合金梯子の取付状態の外観を示す斜視
図である。FIG. 3 is a perspective view showing an external appearance of the light alloy ladder in a mounted state.

【図４】（Ａ）は同じく軽合金梯子の拡大斜視図であ
り、（Ｂ）は羽子板ボルト部分の拡大斜視図である。FIG. 4A is an enlarged perspective view of a light alloy ladder, and FIG. 4B is an enlarged perspective view of a battledore bolt portion.

【図５】従来例を示す一部の正面図である。FIG. 5 is a partial front view showing a conventional example.

【図６】図５のＶＩ−ＶＩ線における切断平面図であ
る。6 is a sectional plan view taken along line VI-VI of FIG.

【図７】他の従来例を示す斜視図である。FIG. 7 is a perspective view showing another conventional example.

【符号の説明】[Explanation of symbols]

１ 鉄骨柱 ２ 軽合金梯子 ３ ブラケット ４ 左右の柱 ５ ステップ ６ 空洞 ７ スチールパイプ ８ 係合鈎 ９ ボルト孔 １０ 羽子板ボルト １１ 通しボルト １４ 係合面 １５ 係合金具 １５ａ ボルト挿通部 １６ ナット 1 Steel Column 2 Light Alloy Ladder 3 Bracket 4 Left and Right Column 5 Step 6 Cavity 7 Steel Pipe 8 Engagement Hook 9 Bolt Hole 10 Battledore Bolt 11 Through Bolt 14 Engagement Surface 15 Engagement Fitting 15a Bolt Insertion Part 16 Nut

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 軽合金梯子（２）のステップ（５）の空
洞（６）内にステップ（５）と同長のスチールパイプ
（７）を緩挿し、前記梯子（２）の左右の柱（４）に係
合する係合鈎（８）と、通しボルト（１１）挿通用ボル
ト孔（９）を有する羽子板ボルト（１０）の他端に内側
に向って傾斜した係合金具（１５）を緩挿し、この係合
金具（１５）をナット（１６）で締付ける鉄骨建方用軽
合金梯子取付装置。1. A steel pipe (7) having the same length as that of the step (5) is loosely inserted into the cavity (6) of the step (5) of the light alloy ladder (2), and the left and right columns () of the ladder (2) are inserted. 4) engaging hooks (8) and engaging fittings (15) inclined inwardly at the other end of the battledore bolts (10) having through bolts (11) insertion bolt holes (9) A light alloy ladder attachment device for steel frame erection in which the engagement fitting (15) is loosely inserted and the nut (16) is tightened. 【請求項２】 羽子板ボルト（１０）の他端に内側に向
かって４５度程度傾斜したボルト挿通部（１５ａ）より
広幅で薄肉の係合面（１４）を有する係合金具（１５）
を緩挿した請求項１に記載の鉄骨建方用軽合金梯子取付
装置。2. An engagement metal fitting (15) having a thinner engagement surface (14) at the other end of the battledore bolt (10) than the bolt insertion portion (15a) inclined toward the inside by about 45 degrees.
The light-alloy ladder mounting device for steel frame erection according to claim 1, wherein the bracket is loosely inserted. 【請求項３】 請求項１または請求項２の梯子取付装置
を、鉄骨の地組時に鉄骨柱（１）のブラケット（３）に
取付ける鉄骨建方用軽合金梯子取付方法。3. A method for mounting a light alloy ladder for steel framing, wherein the ladder mounting device according to claim 1 or 2 is mounted on a bracket (3) of a steel column (1) when a steel frame is assembled.