JP4097532B2

JP4097532B2 - Prop post

Info

Publication number: JP4097532B2
Application number: JP2003005740A
Authority: JP
Inventors: 徳夫米谷
Original assignee: 株式会社国元商会
Priority date: 2003-01-14
Filing date: 2003-01-14
Publication date: 2008-06-11
Anticipated expiration: 2023-01-14
Also published as: JP2004218245A

Description

【０００１】
【発明の属する技術分野】
本発明は、建設中の建造物の水平梁等の上を歩行する作業者の落下防止のために親綱と呼称されるロープを張設するときに使用される親綱用支柱に関するものである。
【０００２】
【従来の技術】
この種の親綱用支柱は、特許文献１に記載のように、支柱本体と、この支柱本体の下端横側部に連設されたクランプ手段と、前記支柱本体の上端に連設された親綱係止部とを備えたものであって、水平梁等を構成する鉄骨の水平張り出しエッジ部に前記クランプ手段を介して親綱用支柱を立設し、同様に立設した親綱用支柱との間や柱等との間で、前記親綱係止部を利用して親綱（ロープ）を張設するものである。而して、従来の一般的な親綱用支柱は、特許文献１に記載のように、鉄骨の水平張り出しエッジ部等に前記クランプ手段を介して親綱用支柱を立設したとき、その支柱本体が垂直（鉛直）に立つようにクランプ手段が構成されていたが、作業者の歩行通路となる前記鉄骨の巾が非常に狭い場合等では、このように立設された親綱用支柱を利用して張設される親綱が当該鉄骨上を歩行する作業者に接近し過ぎることになり、作業者の歩行に支承を来す結果となる。そこで特許文献２に記載のように、鉄骨の水平張り出しエッジ部等に前記クランプ手段を介して親綱用支柱を立設したとき、支柱本体の上端側が前記鉄骨から外側に張り出す方向に当該支柱本体が傾斜するようにクランプ手段が構成されたものが提案された。
【０００３】
【特許文献１】
特許第２７００３８３号公報
【特許文献２】
特開平１１−３００４３号公報
【０００４】
【発明が解決しようとする課題】
上記特許文献２に記載のような従来の親綱用支柱によれば、この親綱用支柱を利用して張設される親綱の位置が作業者の歩行する鉄骨等の上から外側へ離れることになるので、垂直に親綱用支柱を立設する場合と比較して作業者の歩行がし易くなるのであるが、反面、床や地面等の水平面上で親綱用支柱を立てることが出来なくなった。このため、トラック輸送するような場合や倉庫で保管するような場合、重量物である各親綱用支柱を水平に寝かせて積み重ねることになり、クランプ手段や親綱係止部等が変形する等の損傷を受け易くなっていた。又、地上で親綱用支柱を取り付けた鉄骨をクレーンで所要箇所に吊り上げるのであるが、地上での親綱用支柱の取付作業に際して、鉄骨の取付位置側方に親綱用支柱が地面上に寝かして置かれていると、この重量物である親綱用支柱を一旦持ち上げて縦向き姿勢にした状態を手で保持しながら鉄骨の水平張り出しエッジ部にクランプ部を嵌合させるように移動させなければならず、作業に多大の体力を要することになる。
【０００５】
【課題を解決するための手段】
本発明は上記のような従来の問題点を解消し得る親綱用支柱を提供することを目的とするものであって、その手段を後述する実施形態の参照符号を付して示すと、支柱本体１と、この支柱本体１の下端横側部に連設されたクランプ手段２と、前記支柱本体２の上端に連設された親綱係止部３とを備えた親綱用支柱であって、前記クランプ手段２は、支柱本体１から横側方に突出する上下一対の突出部４、５と、上側突出部４を上下方向に貫通する締結用ねじ６ａとを備えたもので、両突出部４，５間に嵌合させた水平被取付部材（鉄骨の水平張り出しエッジ部Ｆ）を下側突出部５との間で前記締結用ねじ６ａにより挟持締結したとき、支柱本体１の上端側が水平被取付部材（鉄骨の水平張り出しエッジ部Ｆ）から外側に張り出す方向に当該支柱本体１が傾斜するように構成され、この親綱支柱の下端には、前記クランプ手段２の下側突出部５の下側面を含み且つ水平面ＧＬ上に支柱本体１を垂直姿勢で立てるための、支柱本体１の長さ方向に対し直角の接地面１４を形成した構成となっている。
【０００６】
上記構成の本発明を実施する場合、前記クランプ手段２の少なくとも下側突出部５は、平面視に於いて支柱本体１から離れる先端側がハの字形に広がるように形成し、当該下側突出部５の下側面を含む前記接地面１４の巾が、支柱本体１から離れる先端側が広くなるように構成することが出来る。この場合、前記クランプ手段２の上側突出部４も、下側突出部５と同様に、平面視に於いて支柱本体１から離れる先端側がハの字形に広がるように形成するのが望ましい。
【０００７】
又、前記クランプ手段２の上下両突出部４，５は、支柱本体１の左右両側面に当接固着されたコの字形両側板８，９と、このコの字形両側板８，９の支柱本体１から突出する上側突出板部８ａ，９ａ間及び下側突出板部８ｂ，９ｂ間を連結する横方向連結材１０〜１３とから構成し、このコの字形両側板８，９の下側端面で前記接地面１４を構成することが出来る。この場合、前記コの字形両側板８，９の支柱本体１から突出する上側突出板部８ａ，９ａには、内側が溝状に窪んで外側に膨出する補強用リブ１５ａ，１５ｂを形成し、この左右両上側突出板部８，９の補強用リブ１５ａ，１５ｂの内側に横方向連結材１０の左右両側辺を内嵌状態で固着し、この横方向連結材１０に前記締結用ねじ６ａを螺合貫通させてクランプ手段２を構成することが出来る。
【０００８】
【発明の実施の形態】
以下に本発明の好適実施形態を添付図に基づいて説明すると、１は角パイプ材から成る支柱本体であり、２は支柱本体１の下端横側部（前側）に設けられたクランプ手段、３は支柱本体１の上端に設けられた親綱係止部である。クランプ手段２は、支柱本体１から横側方に突出する上下一対の突出部４，５と、上側突出部４を上下方向に貫通する左右一対の締結用ねじ６ａ，６ｂとを備えたものである。支柱本体１の前側側面には、クランプ手段２に近い位置で把手７が付設されている。
【０００９】
クランプ手段２を更に詳細に説明すると、クランプ手段２の上下両突出部４，５は、支柱本体１の左右両側面に当接されると共に溶接により固着されたコの字形両側板８，９と、このコの字形両側板８，９の支柱本体１から前側に突出する上側突出板部８ａ，９ａ間及び下側突出板部８ｂ，９ｂ間を連結する横方向連結材１０，１１及び１２，１３とから構成され、このコの字形両側板８，９の下側端面が、支柱本体１の長さ方向に対し直角の接地面１４を構成している。
【００１０】
クランプ手段２の上側突出部４を構成するコの字形両側板８，９の上側突出板部８ａ，９ａには、内側が溝状に窪んで外側に膨出する補強用リブ１５ａ，１５ｂが形成され、クランプ手段２の上側突出部４を構成する横方向連結材１０，１１の内、肉厚の板材から成る一方の連結材１０は、前記補強用リブ１５ａ，１５ｂの内側溝部に左右両側辺が内嵌する状態で溶接により固着され、この横方向連結材１０に前記締結用ねじ６ａ，６ｂが上下方向に螺合貫通している。他方の横方向連結材１１は、前記横方向連結材１０の前端をカバーする状態でコの字形両側板８，９の上側突出板部８ａ，９ａの前側辺間に溶接で固着されている。勿論この横方向連結材１１は、前記横方向連結材１０の前端とも溶接で固着されている。而して、図１Ａに示すように支柱本体１を上端が後方に倒れるように所定角度傾斜させたとき、締結用ねじ６ａ，６ｂが垂直（鉛直）向きとなると共に当該締結用ねじ６ａ，６ｂが上下方向に螺合貫通している肉厚の横方向連結材１０が水平になるように構成されている。
【００１１】
クランプ手段２の上下両突出部４，５を構成するコの字形両側板８，９の凹入内側辺には、外側に一体に張り出す折曲張り出し部８ｃ，９ｃが形成され、下側突出部５の上側入り隅部の折曲張り出し部８ｃ，９ｃは一段低く構成されて、この一段低い左右両入り隅部間にアングル材から成る前記横方向連結材１２が溶接により固着架設され、横方向連結材１３は、コの字形両側板８，９の下側突出板部８ｂ，９ｂの前側辺間に、上端が前記折曲張り出し部８ｃ，９ｃの前半部上面と面一の状態で溶接で固着されている。この横方向連結材１２の水平板部と横方向連結材１３の上端面、及び折曲張り出し部８ｃ，９ｃの前半部上面とで、上側突出部４の肉厚横方向連結材１０と平行なクランプ用受け面２ａが構成されている。又、図４に示すように、支柱本体１の前側が上がるように斜めにカットされた下端開口を閉じる下端閉塞版１６がコの字形両側板８，９間に溶接により固着されている。
【００１２】
上記のようにクランプ手段２の上下両突出部４，５を構成するために支柱本体１の左右両側面に当接されると共に溶接により固着されたコの字形両側板８，９は、その支柱本体１から前側に突出する上下各突出板部８ａ，８ｂ及び９ａ，９ｂが、図３に示すように、先端側ほど左右外側へハの字形に広がるように形成されている。従って、上側突出部４の締結用ねじ６ａ，６ｂが螺合貫通する肉厚の横方向連結材１０や、下端閉塞版１５の支柱本体１から前方に延出する部分も先端側程巾広に形成され、コの字形両側板８，９の下端面で構成された接地面１４も、支柱本体１から前方に延出する部分がハの字形に広がっている。
【００１３】
前記コの字形両側板８，９の下端面で構成される前記接地面１４は、支柱本体１の長さ方向に対し直角になるように構成されている。従って図１Ｂに示すように上記構成の親綱用支柱は、クランプ手段２が突出する側が巾広になった下端の接地面１４を利用して垂直に安定的に自立させることが出来る。尚、コの字形両側板８，９には、図示のように支柱本体１の左右両側面に沿って上方に延出する先細り状の延出部８ｄ，９ｄが連設され、この延出部８ｄ，９ｄを含むコの字形両側板８，９と支柱本体１との当接境界部の全域を溶接することにより、支柱本体１の曲げ強度を増大させている。
【００１４】
親綱係止部３は如何なる構成のものでも良いが、図示の親綱係止部３は、支柱本体１の上端の固着天板１ａに設けられたねじ孔を利用してボルト１７により取り付けられたものであって、取付用基板部１８と、この取付用基板部１８に突設された親綱係止部材１９とから構成されている。取付用基板部１８は、矩形状の突曲部２０ａを１枚の板材から一体に折曲形成した断面ハット形のもので、当該矩形状突曲部２０ａが支柱本体１の平面視に於ける対角線に沿った方向になるように、当該矩形状突曲部２０ａの下端両側に延出する取付板部２０ｂが前記ボルト１７で支柱本体１の天板１ａ上に取り付けられる。親綱係止部材１９は、１本の線材を曲げ加工したものであって、支柱本体１の長さ方向と平行な両脚部２１ａ，２１ｂが取付用基板部１８の矩形状突曲部２０ａの両側面に振り分け状に溶接により固着され、両脚部２１ａ，２１ｂの上端部間で形成された閉じた環状部２１ｃに、３６０度何れの向きにも親綱を係止張設出来るように構成されている。
【００１５】
上記構成の親綱支柱は、輸送時や格納時等では、図１Ｂに示すように水平面ＧＬ上に垂直に自立させ、必要に応じて自立する多数本の親綱支柱を束ねるようにロープ等で結束することが出来る。そして使用に際しては、図１Ａに仮想線で示すように、水平梁を構成する鉄骨の水平張り出しエッジ部Ｆに対しクランプ手段２の上下の突出部４，５間の凹部を横から嵌合し、上側の２本の締結用ねじ６ａ，６ｂを締め付けて、当該水平張り出しエッジ部Ｆをクランプ用受け面２ａとの間で挟持固定する。この結果、支柱本体１は、上端の親綱係止部３が水平張り出しエッジ部Ｆから外側へ離れるように所定角度（接地面１４とクランプ用受け面２ａとの角度差分）だけ傾斜して立設される。このようにして親綱支柱を水平梁を構成する鉄骨の長さ方向適当間隔おきに立設し、これら各親綱支柱間や親綱支柱と柱等との間に親綱係止部３等を利用して、鉄骨の水平張り出しエッジ部Ｆに対し外側に離れた位置で所定高さに親綱を略水平に張設することが出来る。
【００１６】
【発明の効果】
本発明は以上のように実施し且つ使用することが出来るものであって、係る本発明の親綱用支柱によれば、鉄骨の水平張り出しエッジ部等の水平被取付部材にクランプ手段で支柱本体を取り付けた使用時には、当該支柱本体の上端側が水平被取付部材から外側に張り出す方向に当該支柱本体が傾斜するように構成されたものでありながら、使用していない親綱支柱は、支柱本体の長さ方向に対し直角の接地面を利用して床面上や地面上に垂直姿勢で立てることが出来る。
【００１７】
従って、この親綱支柱をトラック輸送するような場合や倉庫で保管するような場合に各親綱支柱を垂直に立てた状態で結束することが容易に行え、クランプ手段や親綱係止部等が変形する等の損傷を受けるのを防止出来る。又、地面上に親綱支柱を立てることが出来るので、地上での鉄骨等に対する親綱用支柱の取付作業も、地面上に寝かして置かれている親綱支柱を一旦持ち上げて縦向き姿勢にした状態を手で保持しながら鉄骨の水平張り出しエッジ部等にクランプ部を嵌合させるように移動させなければならない場合と比較して、作業性が向上する。
【００１８】
尚、請求項２に記載の構成によれば、前記クランプ手段の下側突出部の下側面を含む前記接地面の巾が、支柱本体から離れる先端側が広くなるように構成されているので、当該接地面を利用して親綱支柱を垂直に立てたときの左右横方向の倒れ防止効果が高まり、より安全に親綱支柱を地面上等に立てることが出来る。又、当該下側突出部の上側面で形成されるクランプ用受け面も先端側を広くすることが出来るので、使用状態での親綱支柱に親綱を介して左右横方向に倒す外力が働いたときの対抗力も向上させ、使用状態での安全性を高めることが出来る。この場合、請求項３に記載の構成を組み合わせることによって、使用状態での安全性を一層高めることが出来る。
【００１９】
又、請求項４に記載の構成によれば、支柱本体の左右両側面に当接固着されたコの字形両側板の下側端面が前記接地面を構成するので、当該接地面の巾を支柱本体の巾よりも広げることになり、親綱支柱を垂直に立てるときの安定性を高めることが出来る。しかも、クランプ手段の上下各突出部の強度も、支柱本体の前面に突出部材を溶接等で突設させるときよりも高めることが出来る。この場合、請求項５に記載の構成を採用することにより、クランプ手段の上側突出部の強度も飛躍的に高めることが出来、安全性の高い親綱支柱を容易に製造することが出来る。
【図面の簡単な説明】
【図１】Ａ図は使用時の姿勢での側面図であり、Ｂ図は水平面上に立てた姿勢での側面図である。
【図２】図１Ａの正面図である。
【図３】図１Ａの平面図である。
【図４】図３のＡ−Ａ線断面図である。
【図５】図３のＢ−Ｂ線断面図である。
【符号の説明】
１支柱本体
２クランプ手段
３親綱係止部
４，５クランプ手段の上下一対の突出部
６ａ，６ｂクランプ手段の締結用ねじ
８，９コの字形両側板
１０〜１３横方向連結材
１４接地面
１５ａ，１５ｂ補強用リブ
Ｆ鉄骨の水平張り出しエッジ部（水平被取付部材）
ＧＬ水平面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strut for a master rope used when a rope called a master rope is stretched to prevent a worker walking on a horizontal beam or the like of a building under construction from falling. .
[0002]
[Prior art]
As described in Patent Document 1, this type of main rope support column includes a support column main body, clamp means connected to a lower side portion of the support column main body, and a parent device connected to the upper end of the support column main body. A main rope support column, which is provided with a rope lock portion, and is provided in the same manner by standing upright on the horizontal overhang edge portion of a steel frame constituting a horizontal beam or the like via the clamping means. The master rope (rope) is stretched by using the master rope locking portion between the bridge and the pillar. Thus, as described in Patent Document 1, when a main strut strut is erected on the horizontal overhanging edge portion or the like of a steel frame via the clamping means, as shown in Patent Document 1, The clamp means is configured so that the main body stands vertically (vertical). However, in the case where the width of the steel frame that is the walking path of the worker is very narrow, the support strut for standing up in this way is used. As a result, the master rope stretched by using it is too close to the worker walking on the steel frame, resulting in support for the worker's walking. Therefore, as described in Patent Document 2, when the main strut support column is erected on the horizontal protruding edge portion of the steel frame via the clamp means, the support column main body extends in the direction in which the upper end side of the support column protrudes outward from the steel frame. There has been proposed one in which the clamping means is configured so that the main body is inclined.
[0003]
[Patent Document 1]
Japanese Patent No. 2700383 [Patent Document 2]
JP-A-11-30043 [0004]
[Problems to be solved by the invention]
According to the conventional strut for the main rope as described in Patent Document 2, the position of the main rope to be stretched by using the strut for the main rope is separated from the upper side of the steel frame or the like on which the worker walks. As a result, it is easier for the worker to walk compared to the case where the main strut support column is erected vertically, but on the other hand, the main strut support column can be set up on a horizontal surface such as the floor or the ground. lost. For this reason, when transporting by truck or storing in a warehouse, the main strut struts, which are heavy objects, are laid horizontally and stacked, and the clamping means, the main strut locking part, etc. are deformed, etc. It was easy to be damaged. In addition, the steel frame with the main rope support post mounted on the ground is lifted to the required location with a crane. When the main work support post is installed on the ground, the main support post is placed on the ground on the side where the steel frame is attached. If the laying unit is laid down, the main support strut, which is a heavy object, is lifted up and held in the vertical position by hand. It requires a lot of physical strength.
[0005]
[Means for Solving the Problems]
The present invention has an object to provide a strut for a master rope that can solve the above-mentioned conventional problems, and the means is shown with reference numerals of embodiments to be described later. A main rope support column comprising a main body 1, a clamp means 2 provided continuously on the lateral side of the lower end of the column main body 1, and a parent rope engaging portion 3 provided continuously on the upper end of the column main body 2. The clamp means 2 includes a pair of upper and lower projecting portions 4 and 5 projecting laterally from the column main body 1 and a fastening screw 6a penetrating the upper projecting portion 4 in the vertical direction. When a horizontal mounting member (horizontal projecting edge portion F of steel frame) fitted between the projecting portions 4 and 5 is clamped and fastened with the lower projecting portion 5 by the fastening screw 6a, the upper end of the column main body 1 is fixed. In the direction that the side projects outward from the horizontal mounted member (horizontal projecting edge F of the steel frame) The main body 1 is configured to be inclined, and the lower end of the master rope column includes a lower side surface of the lower protrusion 5 of the clamp means 2 and is used to stand the column main body 1 in a vertical posture on the horizontal plane GL. In this configuration, a ground contact surface 14 perpendicular to the length direction of the column main body 1 is formed.
[0006]
When the present invention having the above-described configuration is carried out, at least the lower protrusion 5 of the clamp means 2 is formed so that the tip side away from the column main body 1 in a plan view spreads in a square shape, and the lower protrusion 5, the width of the grounding surface 14 including the lower surface can be configured such that the tip side away from the column main body 1 is wide. In this case, similarly to the lower protrusion 5, the upper protrusion 4 of the clamping means 2 is preferably formed so that the tip side away from the column main body 1 in a plan view spreads in a square shape.
[0007]
Further, the upper and lower protrusions 4 and 5 of the clamping means 2 are formed in U-shaped side plates 8 and 9 which are in contact with and fixed to the left and right side surfaces of the column body 1 and the columns of the U-shaped side plates 8 and 9. It is comprised from the horizontal direction connection materials 10-13 which connect between the upper protrusion board parts 8a and 9a which protrude from the main body 1, and between the lower protrusion board parts 8b and 9b, The lower side of this U-shaped both-sides board 8 and 9 The ground plane 14 can be formed by the end face. In this case, the upper protruding plate portions 8a and 9a protruding from the column main body 1 of the U-shaped side plates 8 and 9 are formed with reinforcing ribs 15a and 15b that are recessed in a groove shape and bulge outward. The left and right sides of the lateral coupling member 10 are fixed inside the reinforcing ribs 15a and 15b of the left and right upper projecting plate portions 8 and 9 in an internally fitted state, and the fastening screw 6a is fixed to the lateral coupling member 10. The clamping means 2 can be configured by screwing through.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 denotes a column main body made of a square pipe material, 2 denotes a clamping means provided on the lower side (front side) of the lower end of the column main body 3, Is a master rope locking portion provided at the upper end of the column main body 1. The clamp means 2 includes a pair of upper and lower protrusions 4 and 5 protruding laterally from the column main body 1 and a pair of left and right fastening screws 6a and 6b penetrating the upper protrusion 4 in the vertical direction. is there. A handle 7 is attached to the front side surface of the column main body 1 at a position close to the clamping means 2.
[0009]
The clamp means 2 will be described in more detail. The upper and lower protrusions 4 and 5 of the clamp means 2 are in contact with the left and right side surfaces of the column body 1 and are fixed to the U-shaped side plates 8 and 9 fixed by welding. Lateral connecting members 10, 11 and 12, which connect the U-shaped side plates 8, 9 between the upper protruding plate portions 8a, 9a and the lower protruding plate portions 8b, 9b protruding forward from the column main body 1; 13, and the lower end surfaces of the U-shaped side plates 8 and 9 constitute a grounding surface 14 perpendicular to the length direction of the column main body 1.
[0010]
Reinforcing ribs 15a and 15b are formed on the upper protruding plate portions 8a and 9a of the U-shaped side plates 8 and 9 constituting the upper protruding portion 4 of the clamping means 2 and the inner side is recessed in a groove shape and bulges outward. One of the connecting members 10 made of a thick plate member out of the lateral connecting members 10 and 11 constituting the upper projecting portion 4 of the clamping means 2 is provided on the left and right sides of the inner grooves of the reinforcing ribs 15a and 15b. The fastening screws 6a and 6b are threaded through the lateral connecting member 10 in the vertical direction. The other lateral connecting member 11 is fixed by welding between the front side edges of the upper projecting plate portions 8a, 9a of the U-shaped side plates 8, 9 so as to cover the front end of the lateral connecting member 10. Of course, the lateral connecting member 11 is also fixed to the front end of the lateral connecting member 10 by welding. Thus, as shown in FIG. 1A, when the column main body 1 is tilted at a predetermined angle so that the upper end is tilted backward, the fastening screws 6a and 6b are oriented vertically (vertical) and the fastening screws 6a and 6b. Is configured such that the thick lateral connecting member 10 threaded through in the vertical direction is horizontal.
[0011]
On the inner sides of the concave sides of the U-shaped side plates 8 and 9 constituting the upper and lower protrusions 4 and 5 of the clamp means 2, bent protrusions 8c and 9c are formed so as to integrally protrude outward. The bent overhanging portions 8c and 9c at the upper corner of the portion 5 are configured to be one step lower, and the lateral connecting member 12 made of an angle member is fixedly installed by welding between the left and right corners that are one step lower. The direction connecting member 13 is welded between the front side edges of the lower projecting plate portions 8b and 9b of the U-shaped side plates 8 and 9 so that the upper end is flush with the upper surfaces of the front half portions of the bent overhang portions 8c and 9c. It is fixed with. The horizontal plate portion of the lateral connecting member 12, the upper end surface of the lateral connecting member 13, and the upper surface of the front half of the bent projecting portions 8 c and 9 c are parallel to the thick lateral connecting member 10 of the upper protrusion 4. A clamping receiving surface 2a is configured. As shown in FIG. 4, a lower end closing plate 16 that closes a lower end opening that is cut obliquely so that the front side of the column main body 1 is raised is fixed between the U-shaped side plates 8 and 9 by welding.
[0012]
As described above, the U-shaped side plates 8 and 9 which are in contact with the left and right side surfaces of the column main body 1 and are fixed by welding in order to form the upper and lower protrusions 4 and 5 of the clamp means 2 As shown in FIG. 3, the upper and lower protruding plate portions 8 a, 8 b and 9 a, 9 b protruding forward from the main body 1 are formed so as to spread in the shape of a letter C toward the left and right outer sides. Accordingly, the thick lateral connecting member 10 through which the fastening screws 6a and 6b of the upper protruding portion 4 are screwed and the portion extending forward from the column main body 1 of the lower end closing plate 15 is also made wider toward the tip side. A portion of the grounding surface 14 formed and formed by the lower end surfaces of the U-shaped side plates 8 and 9 extends forward from the column main body 1 in a C shape.
[0013]
The grounding surface 14 configured by the lower end surfaces of the U-shaped side plates 8 and 9 is configured to be perpendicular to the length direction of the column main body 1. Therefore, as shown in FIG. 1B, the master rope support having the above-described configuration can be made to stand by itself stably using the ground contact surface 14 at the lower end where the side from which the clamp means 2 protrudes becomes wider. The U-shaped side plates 8 and 9 are continuously provided with tapered extending portions 8d and 9d extending upward along the left and right side surfaces of the column main body 1 as shown in the figure. The bending strength of the column main body 1 is increased by welding the entire area of the contact boundary between the U-shaped side plates 8 and 9 including 8d and 9d and the column main body 1.
[0014]
The master rope locking portion 3 may have any configuration, but the master rope locking portion 3 shown in the figure is attached by a bolt 17 using a screw hole provided in the fixing top plate 1a at the upper end of the column main body 1. The mounting board portion 18 and the master rope locking member 19 projecting from the mounting board portion 18 are configured. The mounting board portion 18 has a hat shape in cross section in which a rectangular bent portion 20a is integrally formed from a single plate material, and the rectangular bent portion 20a is in a plan view of the column main body 1. Mounting plate portions 20b extending on both sides of the lower end of the rectangular bent portion 20a are mounted on the top plate 1a of the column main body 1 with the bolts 17 so as to be along the diagonal line. The master rope locking member 19 is obtained by bending one wire, and both leg portions 21a and 21b parallel to the length direction of the column main body 1 are formed on the rectangular bent portion 20a of the mounting substrate portion 18. It is constructed so that the master rope can be locked and stretched in any direction at 360 degrees on the closed annular portion 21c formed between the upper end portions of both leg portions 21a and 21b. ing.
[0015]
As shown in FIG. 1B, the main strut strut of the above configuration is self-supported vertically on the horizontal plane GL as shown in FIG. 1B, and a rope or the like so as to bundle a large number of self-support strut struts as needed. Can be united. And in use, as shown in phantom lines in FIG. 1A, the concave portions between the upper and lower protruding portions 4, 5 of the clamping means 2 are fitted from the side to the horizontal protruding edge portion F of the steel frame constituting the horizontal beam, The upper two fastening screws 6a and 6b are tightened, and the horizontal protruding edge portion F is clamped and fixed between the clamping receiving surface 2a. As a result, the column main body 1 is inclined and tilted by a predetermined angle (angle difference between the ground contact surface 14 and the clamp receiving surface 2a) so that the master rope locking portion 3 at the upper end is separated from the horizontal protruding edge portion F. Established. In this way, the master rope column is erected at appropriate intervals in the length direction of the steel frames constituting the horizontal beam, and the master rope anchoring portion 3 etc. between each parent rope column or between the master rope column and the pillar, etc. The master rope can be stretched substantially horizontally at a predetermined height at a position away from the horizontal projecting edge F of the steel frame.
[0016]
【The invention's effect】
The present invention can be implemented and used as described above, and according to the parent strut of the present invention, the strut main body is clamped by a horizontal attached member such as a horizontal overhang edge portion of a steel frame. The main strut strut that is not in use is configured so that the upper end side of the strut body is inclined in the direction in which the upper end side of the strut body projects outward from the horizontal attached member. It is possible to stand in a vertical posture on the floor or on the ground by using a contact surface perpendicular to the length direction of the floor.
[0017]
Therefore, when this master rope support is transported by truck or when it is stored in a warehouse, each master rope support can be easily bundled in a vertically standing state, such as a clamping means and a master rope locking part. Can be prevented from being damaged. In addition, since the master rope support can be set up on the ground, the master rope support attached to the steel frame on the ground can also be lifted once and placed in the vertical position. Compared with the case where the clamp part needs to be moved to fit the horizontal overhanging edge part of the steel frame while holding this state by hand, workability is improved.
[0018]
In addition, according to the structure of Claim 2, since the width | variety of the said grounding surface containing the lower side surface of the lower side protrusion part of the said clamp means is comprised so that the front end side which leaves | separates from a support | pillar body may become wide, The effect of preventing lateral tilting when the master brace strut is set up vertically using the ground surface is enhanced, and the master brace strut can be stood on the ground more safely. In addition, since the clamp receiving surface formed on the upper side surface of the lower projecting portion can also be widened at the front end side, an external force is exerted on the main rope support column in the right-and-left lateral direction via the master rope in use. It is possible to improve the resistance in use and improve the safety in use. In this case, the safety in the state of use can be further enhanced by combining the configurations of the third aspect.
[0019]
According to the configuration of claim 4, the lower end surfaces of the U-shaped side plates that are in contact with and fixed to the left and right side surfaces of the column main body constitute the grounding surface. It will be wider than the width of the main body, and it is possible to improve the stability when standing the master rope support vertically. In addition, the strength of the upper and lower protrusions of the clamp means can be increased as compared with the case where the protrusion member is protruded from the front surface of the column main body by welding or the like. In this case, by adopting the configuration according to the fifth aspect, the strength of the upper protruding portion of the clamping means can be dramatically increased, and a high safety parent rope support can be easily manufactured.
[Brief description of the drawings]
FIG. 1A is a side view in a posture during use, and FIG. B is a side view in a posture standing on a horizontal plane.
FIG. 2 is a front view of FIG. 1A.
FIG. 3 is a plan view of FIG. 1A.
4 is a cross-sectional view taken along line AA in FIG.
5 is a cross-sectional view taken along line BB in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support | pillar main body 2 Clamp means 3 Parent rope locking part 4, 5 A pair of upper and lower protrusions 6a, 6b of clamp means Screws for fastening 8, 9 U-shaped side plates 10-13 Lateral connecting material 14 Grounding surface 15a, 15b Reinforcing rib F Horizontally projecting edge of steel frame (horizontally attached member)
GL level

Claims

A strut main strut comprising a strut main body, clamp means provided continuously on the lateral side of the lower end of the support main body, and a master rope engaging portion provided continuously on the upper end of the post main body, wherein the clamp The means comprises a pair of upper and lower projecting portions projecting laterally from the column main body and a fastening screw penetrating the upper projecting portion in the vertical direction, and is fitted horizontally between the projecting portions. When the member is clamped and fastened between the lower projecting portion and the fastening screw, the column main body is configured such that the column main body is inclined in a direction in which the upper end side of the column main body projects outward from the horizontal attached member. At the lower end of the column, a grounding surface perpendicular to the length direction of the column body is formed, including the lower surface of the lower projecting portion of the clamp means, and standing on the horizontal surface in a vertical posture. , Strut for parent rope.

At least the lower projecting portion of the clamp means is formed so that the tip side away from the column main body in plan view spreads in a C shape, and the width of the grounding surface including the lower side surface of the lower projecting portion is the column. The strut for master ropes according to claim 1, wherein a tip end side away from the main body is widened.

The upper strut of the clamp means is formed so that the tip side away from the strut body in a plan view spreads in a C shape in the same way as the lower projecting portion. .

The upper and lower projecting portions of the clamping means are U-shaped both side plates that are in contact with and fixed to the left and right side surfaces of the column main body, and upper and lower projecting portions protruding from the column main body of the U-shaped both side plates. The main strut strut according to any one of claims 1 to 3, further comprising a lateral connecting member for connecting the plate portions, and a lower end face of the U-shaped side plates constituting the grounding surface. .

The upper protruding plate portion protruding from the column main body of the U-shaped both side plates is formed with reinforcing ribs that are recessed inwardly and bulge outward, and the reinforcing ribs of the left and right upper protruding plate portions 5. The strut for a main rope according to claim 4, wherein the left and right sides of the lateral connecting member are fixed inside in an internally fitted state, and the fastening screw is threaded through the lateral connecting member.