JP6220471B1 - Fall prevention prop - Google Patents

Fall prevention prop Download PDF

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JP6220471B1
JP6220471B1 JP2017067231A JP2017067231A JP6220471B1 JP 6220471 B1 JP6220471 B1 JP 6220471B1 JP 2017067231 A JP2017067231 A JP 2017067231A JP 2017067231 A JP2017067231 A JP 2017067231A JP 6220471 B1 JP6220471 B1 JP 6220471B1
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fence
rod
column
bar
pile
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JP2018168608A (en
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和保 森
和保 森
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株式会社小坂工務店
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Abstract

【課題】取り付け作業の手間のかからない転倒防止支柱を提供する。【解決手段】地面に設けられた杭と立設するフェンスとを連結して当該フェンスの転倒を防止する転倒防止支柱1であって、伸縮自在な支柱3と、前記支柱3の上端部に配置され、前記フェンスに取り付ける取付部6と、前記支柱3の下端部に配置され、前記杭に取り付ける足部2とを備え、前記支柱3は、パイプ状の外側棒3aと、一部が前記外側棒3a内に挿入され軸方向にスライド自在の内側棒3bとを有し、前記内側棒3bまたは前記外側棒3aに、当該内側棒3bと外側棒3aが相対的にスライドできないように固定する固定状態と、当該内側棒3bと外側棒3aが相対的にスライドできるように前記固定を解除する解除状態とに切り替える切替手段を有する転倒防止支柱1。【選択図】図1An object of the present invention is to provide a fall-preventing support post that does not require the labor of installation work. A fall-preventing support post 1 for connecting a pile provided on the ground and a fence to be erected to prevent the fence from toppling over, is provided with an extendable support post 3 and an upper end of the support post 3. And an attachment portion 6 attached to the fence, and a foot 2 attached to the lower end portion of the support column 3 and attached to the pile. The support column 3 includes a pipe-shaped outer rod 3a and a part of the outer surface. An inner rod 3b that is inserted into the rod 3a and is slidable in the axial direction, and fixed to the inner rod 3b or the outer rod 3a so that the inner rod 3b and the outer rod 3a cannot slide relative to each other. A fall prevention column 1 having a switching means for switching between a state and a release state in which the fixation is released so that the inner bar 3b and the outer bar 3a can slide relative to each other. [Selection] Figure 1

Description

この発明は、フェンスなどの転倒を防止するような転倒防止支柱に関する。   The present invention relates to a fall-preventing support column that prevents the fence or the like from falling.

従来から、工事現場や建築現場等で仮設のフェンスが用いられている。このようなフェンスは、適宜のパイプ状の突っ張り棒を用いて。一方をフェンスの支柱に、他方を地面等に固定して転倒防止措置がとられる。   Conventionally, temporary fences have been used at construction sites and construction sites. Such a fence uses an appropriate pipe-like tension rod. One is fixed to the fence post and the other is fixed to the ground or the like, and measures are taken to prevent falling.

このような転倒防止に用いられるものとして、特許文献1に、パイプ式ターンバックルを改変した本体2を中心に柱Cに設けられるホークエンド状部材3およびこのホークエンド状部材3に対応させて基礎Bに設けられるホークエンド状部材4とから構成される鉄骨柱建方治具1が開示されている。   In order to prevent such a fall, Patent Document 1 discloses a hawk-end-like member 3 provided on a pillar C around a main body 2 with a modified pipe-type turnbuckle, and a foundation corresponding to the hawk-end-like member 3. A steel column construction jig 1 composed of a fork-end-like member 4 provided in B is disclosed.

しかしながら、ターンバックルは、本来、胴を回転させることで両端に取り付けられたボルトが締め込まれ、あるいは緩められて、張力を調節するためのものである。そのため、大きく伸縮させたい場合には、胴を何回も回転させなければならず、手間がかかるという問題があった。   However, the turnbuckle is originally intended to adjust the tension by tightening or loosening bolts attached to both ends by rotating the barrel. For this reason, when it is desired to greatly expand and contract, there has been a problem that the cylinder has to be rotated many times, which is troublesome.

また、作業現場によっては、転倒防止用の突っ張り棒を、資材搬送車等が通るたびに取り外しては取り付けるといった作業を繰り返すことが行われる。従って、1つの作業に手間がかかると、そのたびに時間を取られてしまうという問題点があった。   In addition, depending on the work site, the work of removing and attaching the propelling rod for preventing overturning every time the material transportation vehicle passes is repeated. Therefore, there is a problem in that time is required for each work if time is required.

特開平11−217939号公報JP 11-217939 A

この発明は、上述の問題点に鑑みて、取り付け作業の手間のかからない転倒防止支柱を提供することを目的とする。   In view of the above-described problems, an object of the present invention is to provide a fall-preventing support column that does not require time and effort for installation work.

この発明は、地面に設けられた杭と立設する仮設のフェンスとを連結して当該フェンスの転倒を防止する転倒防止支柱であって、伸縮自在な支柱と、前記支柱の上端部に配置され、前記フェンスに取り付ける取付部と、前記支柱の下端部に配置され、前記杭に取り付ける足部とを備え、前記取付部は、前記フェンスと連結する連結部材を有し、前記足部は、前記支柱の長手軸に交差する軸回りに屈曲する屈曲部を有する板状体で、前記屈曲部を挟んで接続部と足部本体を有し、前記接続部は前記支柱に接続され、前記足部本体は前記杭を通す貫通孔を有する転倒防止支柱であることを特徴とする。
The present invention relates to a toppling prevention column that connects a pile provided on the ground and a temporary fence to be erected to prevent the fence from toppling over, and is disposed on a telescopic column and an upper end of the column. A mounting portion that is attached to the fence; and a foot portion that is disposed at a lower end portion of the support column and is attached to the pile. The mounting portion includes a connecting member that is connected to the fence. A plate-like body having a bent portion that is bent around an axis that intersects the longitudinal axis of the column, and has a connecting portion and a foot main body across the bent portion, the connecting portion being connected to the column, and the foot portion The main body is a fall prevention column having a through hole through which the pile passes .

この発明により、取り付け作業の手間のかからない転倒防止支柱を提供できる。   According to the present invention, it is possible to provide a fall-preventing support column that does not require the labor of installation work.

転倒防止支柱を示す全体図。The whole figure which shows a fall prevention prop. 支柱の詳細を示す図。The figure which shows the detail of a support | pillar. 足部と取付部の使用時の様子示す図。The figure which shows the mode at the time of use of a leg part and an attaching part. ガードフェンスの転倒防止に転倒防止支柱を使用する様子を示す図。The figure which shows a mode that a fall prevention pillar is used for fall prevention of a guard fence.

以下、この発明の一実施形態を図面と共に説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<全体構成>
図1は、転倒防止支柱1の全体を示す説明図であり、図1(A)は右へ90°倒した状態の正面図、図1(B)は右へ90°倒した状態の右側面図である。
<Overall configuration>
1A and 1B are explanatory views showing the entire fall prevention column 1, FIG. 1A is a front view showing a state where it is tilted 90 ° to the right, and FIG. 1B is a right side view showing a state where it is tilted 90 ° to the right. FIG.

図1に示すように、転倒防止支柱1は、支柱3と、支柱3の上端部(図中では、右端部)に配置された取付部6と、支柱3の下端部(図中では、左端部)に配置された足部2とを備えている。   As shown in FIG. 1, the fall-preventing support column 1 includes a support column 3, a mounting portion 6 disposed at the upper end portion (right end portion in the drawing), and a lower end portion (left end portion in the drawing). A foot part 2 arranged in the part).

<支柱>
支柱3は、金属素材のパイプ状の外側棒3aと内側棒3bを有している。
外側棒3aは、全長が0.5〜1.8mで、外径が2.5〜10.5cmである。内側棒3bは、全長が0.5〜1.8mで、外径が2〜10cmである。内側棒3bは、その外径が外側棒3aの内径より僅かに小さい。内側棒3bは、下端の伸縮ゴム43を含む一部が外側棒3a内に挿入され、外側棒3aに対して長手軸方向に自在にスライドでき、また、外側棒3aに対して長手軸を中心にして回動できる。
<Support>
The column 3 has a pipe-shaped outer rod 3a and an inner rod 3b made of a metal material.
The outer rod 3a has a total length of 0.5 to 1.8 m and an outer diameter of 2.5 to 10.5 cm. The inner rod 3b has a total length of 0.5 to 1.8 m and an outer diameter of 2 to 10 cm. The outer diameter of the inner bar 3b is slightly smaller than the inner diameter of the outer bar 3a. A part of the inner rod 3b including the elastic rubber 43 at the lower end is inserted into the outer rod 3a and can slide freely in the longitudinal axis direction with respect to the outer rod 3a. Can be rotated.

内側棒3bは、上端部にフェンス(図示せず)に取り付ける取付部6が配置され、中央より取付部6寄りに切替レバー5が設けられている。切替レバー5は、内側棒3bが外側棒3a内をスライドできないように固定する固定状態と、スライドできるように固定を解除する解除状態とに切り替える切り替え操作に用いられる。
外側棒3aは、杭(図示せず)に取り付ける足部2が下端部に配置され、上端部にネジ式ストッパーリング4が取り付けられている。
The inner bar 3b has a mounting portion 6 attached to a fence (not shown) at the upper end portion, and a switching lever 5 provided closer to the mounting portion 6 from the center. The switching lever 5 is used for a switching operation for switching between a fixed state in which the inner rod 3b is fixed so that it cannot slide in the outer rod 3a and a released state in which the fixing is released so that the inner rod 3b can slide.
As for the outer side stick | rod 3a, the foot | leg part 2 attached to a pile (not shown) is arrange | positioned in a lower end part, and the screw type stopper ring 4 is attached to the upper end part.

上述のように、内側棒3b及び外側棒3aの外径は、作業者が手指で把持できる大きさである。また、内側棒3bが外側棒3aに挿入された安定した状態の支柱3は、全長が約0.8〜3.2mであり、フェンスに斜めに立てかけた時に、立って作業を行う作業者の手の届く範囲に取付部6が位置する。。これにより、支柱3を両手の手指で把持した作業者は、運搬及びその後の取り付けの作業がしやすくなっている。   As described above, the outer diameters of the inner rod 3b and the outer rod 3a are large enough for the operator to hold with the fingers. Further, the stable column 3 in which the inner rod 3b is inserted into the outer rod 3a has a total length of about 0.8 to 3.2 m, and when the worker leans on the fence diagonally, The mounting portion 6 is located within a reachable range. . Thereby, the operator who grasped the support | pillar 3 with the fingers of both hands is easy to carry and carry out subsequent work.

<取付部>
取付部6は、金属素材の蝶番であり、内側棒3b(支柱3)の上端部51の正面側に、蝶番の一方の金属板71の裏面の一部が溶接されている。蝶番は、支柱3の長手軸に交差する軸の軸回りに回動自在となるように配置されている。蝶番の他方の金属板73には、フェンスの柱FA(図4参照)と連結する連結部材7が設けられている。連結部材7は、帯状の面ファスナにより形成され、金属板73に中央が固定され、柱FAに左右から巻き付けられるように横長に配置されている。
<Mounting part>
The attachment portion 6 is a hinge made of a metal material, and a part of the back surface of one metal plate 71 of the hinge is welded to the front side of the upper end portion 51 of the inner bar 3b (the support column 3). The hinge is arranged so as to be rotatable around an axis that intersects the longitudinal axis of the column 3. The other metal plate 73 of the hinge is provided with a connecting member 7 that is connected to the fence column FA (see FIG. 4). The connecting member 7 is formed of a band-shaped surface fastener, the center is fixed to the metal plate 73, and is arranged horizontally so as to be wound around the column FA from the left and right.

<足部>
足部2は、金属素材の略矩形状の板状体が、取付部6の回動軸と平行な軸回りに屈曲し、屈曲部を挟んで足部本体21と接続部23とを有している。足部2は、外側棒3a(支柱3)の下端部31の背面側に、接続部23の表面の一部が溶接されている。足部2は、屈曲部が、支柱3の長手軸に交差し且つ取付部6の蝶番の芯軸に平行に配置されている。足部2は、屈曲部において、外側棒3a(支柱3)の表面側に屈曲している。その曲げ角は、30°以上40°以下の範囲で屈曲するのが好ましく、35°がより好ましい。足部本体21には、杭(図示せず)を通すための貫通孔22が設けられている。
<Foot>
The foot 2 has a substantially rectangular plate-like body made of a metal material bent around an axis parallel to the rotation axis of the mounting portion 6, and has a foot main body 21 and a connecting portion 23 with the bent portion interposed therebetween. ing. The foot 2 has a part of the surface of the connecting portion 23 welded to the back side of the lower end 31 of the outer rod 3a (the column 3). The foot portion 2 is arranged such that the bent portion intersects with the longitudinal axis of the support column 3 and is parallel to the hinge axis of the attachment portion 6. The foot 2 is bent toward the surface side of the outer rod 3a (support 3) at the bent portion. The bending angle is preferably bent in the range of 30 ° to 40 °, and more preferably 35 °. The foot main body 21 is provided with a through hole 22 for passing a pile (not shown).

<支柱の伸縮固定機構>
図2は、支柱の詳細を示す説明図であり、図2(A)は90°右に倒した状態の内側棒3bの右側面図、図2(B)は90°右に倒した状態の外側棒3aと内側棒3bの右側面図、図2(C)は外側棒3aのネジ式ストッパーリング4付近の右側面図である。
<Extension / fixation mechanism of support>
2A and 2B are explanatory views showing details of the column. FIG. 2A is a right side view of the inner bar 3b in a state where the column is tilted to the right by 90 °, and FIG. 2B is a state in which the column is tilted to the right by 90 °. FIG. 2C is a right side view of the outer bar 3a and the inner bar 3b in the vicinity of the screw type stopper ring 4 of the outer bar 3a.

内側棒3bの内部には、先端が内側棒3bの先端46から突出し、後端が内側棒3bの中央付近まで伸びる長手軸方向に長い内シャフト45が設けられている。内シャフト45は、内側棒3b内を長手軸方向に前後に摺動することができる。尚、内側棒3bの先端46は、平面状で中央部に内シャフト45が貫通する貫通孔が設けられている。   Inside the inner rod 3b, there is provided an inner shaft 45 that is long in the longitudinal axis direction with the tip protruding from the tip 46 of the inner rod 3b and the rear end extending to the vicinity of the center of the inner rod 3b. The inner shaft 45 can slide back and forth in the longitudinal axis direction within the inner rod 3b. The tip 46 of the inner bar 3b is planar and has a through-hole through which the inner shaft 45 passes in the center.

内側棒3bの先端46から突出する内シャフト45の足部2(図1参照)側の先端部には、伸縮ゴム43が設けられている。伸縮ゴム43は、ゴム素材で、形状が円筒状で、内径が内シャフト45の外径より僅かに大きく、外径が外側棒3aの内径より僅かに小さくなっている。伸縮ゴム43は、ワッシャ42を介してネジ止めしているネジ41と内側棒3bの先端46との間で前後に挟まれている。   An elastic rubber 43 is provided at the tip of the inner shaft 45 protruding from the tip 46 of the inner bar 3b on the foot 2 (see FIG. 1) side. The elastic rubber 43 is a rubber material having a cylindrical shape, an inner diameter slightly larger than the outer diameter of the inner shaft 45, and an outer diameter slightly smaller than the inner diameter of the outer rod 3a. The elastic rubber 43 is sandwiched back and forth between a screw 41 screwed through a washer 42 and a tip 46 of the inner bar 3b.

尚、伸縮ゴム43は、円筒状に限るものではなく、例えば、Oリング状であってもかまわない。Oリング断面円形の外径が外側棒3aの内面と内シャフト45の外面との間隔より僅かに小さく、Oリングの環の内径が内シャフト45の外径より僅かに大きければよい。また、伸縮ゴム43は、一体のものに限るものではなく、例えば、直径が外側棒3aの内面と内シャフト45の外面との間隔より僅かに小さい複数の球状体が、外側棒3aの内面と内シャフト45の外面とワッシャ42と内側棒3bの先端46とで囲まれた空間内に充填されるように構成してもよい。また、伸縮ゴム43は、ゴム素材に限るものではなく、樹脂素材を用いてもよく、また、金属素材を用いたベローズバネや皿ばね等でもよい。   The elastic rubber 43 is not limited to a cylindrical shape, and may be an O-ring shape, for example. The outer diameter of the circular O-ring cross section may be slightly smaller than the distance between the inner surface of the outer rod 3 a and the outer surface of the inner shaft 45, and the inner diameter of the O-ring ring may be slightly larger than the outer diameter of the inner shaft 45. Further, the elastic rubber 43 is not limited to an integral one, and for example, a plurality of spherical bodies whose diameters are slightly smaller than the distance between the inner surface of the outer rod 3a and the outer surface of the inner shaft 45 are the inner surface of the outer rod 3a. You may comprise so that the space enclosed by the outer surface of the inner shaft 45, the washer 42, and the front-end | tip 46 of the inner side stick | rod 3b may be filled. The elastic rubber 43 is not limited to a rubber material, and may be a resin material, or may be a bellows spring or a disc spring using a metal material.

切替レバー5のレバー本体56は、内シャフト45の後端部より後端側の内側棒3bに設けられている。
レバー本体56は、上底が内側棒3bの外径より少し長く、下底が上底の約3倍の略等脚台形状の板状体が、上底の両端から下底に下した略垂直な2つの線に沿って同じ方向に略直角に折り曲げられて形成されている。レバー本体56は、下底がコ字状となり2つの脚が互いに平行に向き合うようになっている。レバー本体56は、上底側の取っ手部56cを内側棒3bの上端側に向けて、コ字状の下底が内側棒3bを表面側から包み込むように配置されている。レバー本体56には、2つの脚と下底とが接するそれぞれの頂点近傍に貫通孔56bが形成されている。内側棒3bには、側面に直径方向に貫通する貫通孔に挿入された支軸57が軸支されている。レバー本体56は、内側棒3bに軸支されている支軸57に貫通孔56bが嵌め合わされている。これにより、レバー本体56は、支軸57を回動軸として回動し、図2(B)に示す取っ手部56cが内側棒3b表面に当接する状態から、取っ手部56cが内側棒3b表面から離間し、代わって図2(A)に示すコ字状の下底が内側棒3b表面に当接する状態に至るまで姿勢を変えることができる。
The lever body 56 of the switching lever 5 is provided on the inner rod 3b on the rear end side from the rear end portion of the inner shaft 45.
The lever body 56 has a substantially isosceles trapezoidal plate-shaped body whose upper bottom is slightly longer than the outer diameter of the inner rod 3b and whose lower bottom is about three times as large as the upper bottom. It is formed by being bent at substantially right angles in the same direction along two vertical lines. The lever body 56 has a U-shaped lower bottom so that the two legs face each other in parallel. The lever body 56 is arranged so that the handle portion 56c on the upper bottom side faces the upper end side of the inner bar 3b, and the lower U-shaped bottom wraps the inner bar 3b from the surface side. A through hole 56b is formed in the lever main body 56 in the vicinity of each apex where the two legs contact the lower base. A support shaft 57 inserted into a through hole penetrating in the diametrical direction on the side surface is supported on the inner rod 3b. In the lever main body 56, a through hole 56b is fitted to a support shaft 57 that is pivotally supported by the inner rod 3b. As a result, the lever main body 56 rotates about the support shaft 57 as a rotation shaft, and the handle portion 56c moves from the surface of the inner rod 3b from the state where the handle portion 56c shown in FIG. The posture can be changed until the U-shaped lower bottom shown in FIG. 2A comes into contact with the surface of the inner rod 3b.

レバー本体56は、内シャフト45と2本のロッド54を介して連結されている。2本のロッド54は、内側棒3bを挟んで平行に配置されている。各ロッド54の一端は、レバー本体56の貫通孔56b(支軸57)から下底に沿って少し離間した箇所に、ヒンジピン56aにより固定されている。一方、各ロッド54の他端は、内シャフト45の後端部に、同じくヒンジピン53により固定されている。尚、内側棒3bには、貫通孔56b(支軸57)より長手軸方向の下端側の側面に、長手軸方向に沿った溝52が対向して2本形成されている。ヒンジピン53は、対向する両溝52に垂直に跨り、その両端部が両溝52内を摺動可能になっている。   The lever main body 56 is connected to the inner shaft 45 via two rods 54. The two rods 54 are arranged in parallel with the inner rod 3b interposed therebetween. One end of each rod 54 is fixed by a hinge pin 56a at a position slightly separated from the through hole 56b (support shaft 57) of the lever main body 56 along the lower bottom. On the other hand, the other end of each rod 54 is similarly fixed to the rear end portion of the inner shaft 45 by a hinge pin 53. In addition, two grooves 52 along the longitudinal axis direction are formed on the inner rod 3b on the side surface on the lower end side in the longitudinal axis direction from the through hole 56b (support shaft 57). The hinge pin 53 straddles the both grooves 52 facing each other perpendicularly, and both end portions thereof are slidable in both the grooves 52.

尚、取っ手部56cと貫通孔56b(支軸57)の間の長さは、ヒンジピン56aと貫通孔56b(支軸57)の間の長さより長い方が好ましく、3倍以上長いのがより好ましい。   The length between the handle portion 56c and the through hole 56b (support shaft 57) is preferably longer than the length between the hinge pin 56a and the through hole 56b (support shaft 57), and more preferably three times or more. .

≪固定動作≫
図2(A)に示すように、レバー本体56が起こされて、取っ手部56cが内側棒3b表面から離間し、内側棒3b表面にコ字状の下底が当接するような状態にある場合には、伸縮ゴム43には外部からの力が加えられず、伸縮ゴム43は自然状態にある。このため、内側棒3bは、外側棒3a内を長手軸方向に自在に摺動することができる。この状態が固定解除状態に該当する。
≪Fixed operation≫
As shown in FIG. 2A, when the lever main body 56 is raised, the handle portion 56c is separated from the surface of the inner bar 3b, and the U-shaped bottom is in contact with the surface of the inner bar 3b. In addition, no external force is applied to the elastic rubber 43, and the elastic rubber 43 is in a natural state. For this reason, the inner bar 3b can slide freely in the outer axis 3a in the longitudinal axis direction. This state corresponds to the fixed release state.

固定状態に移行するには、まず、図2(B)に示すように、取っ手部56cに力を加えて、レバー本体56を倒し、取っ手部56cを内側棒3bの表面に当接させる。これにより、支軸57を中心としてレバー本体56が回動する。レバー本体56の回動に伴って、ヒンジピン56aも回動すると共に内側棒3bの上端側に引っ張られる。ヒンジピン53は、ヒンジピン56aにより一端が固定されたロッド54を介して、溝52内を内側棒3bの上端側に摺動する。そして、内シャフト45は、後端部に固定されたヒンジピン53によって引っ張られ、内側棒3b内を上端側に摺動する。内側棒3bに対して内シャフト45が相対的に上端側へ摺動することにより、内シャフト45の先端にネジ41で固定されたワッシャ42と内側棒3bの先端46との間の間隔が狭まる。その結果、内シャフト45の先端部に設けられワッシャ42と内側棒3bの先端46との間に挟まれた伸縮ゴム43は、圧縮され長手軸方向の幅が縮小する。長手軸方向の幅が縮小した伸縮ゴム43は、長手軸方向と垂直な径方向に膨出する。径方向に膨出した伸縮ゴム43は、膨出先の外側棒3aの内面に当接し押圧力を加える。こうして、内側棒3bに対しては先端46で当接し外側棒3aに対しては内面を押圧する長手軸方向の幅が縮小した伸縮ゴム43を介して、外側棒3aと内側棒3bとは、伸縮ゴム43の摩擦力により相対的にスライドできないように固定される。この状態が固定状態である。   In order to shift to the fixed state, first, as shown in FIG. 2 (B), a force is applied to the handle portion 56c, the lever body 56 is tilted, and the handle portion 56c is brought into contact with the surface of the inner bar 3b. Thereby, the lever main body 56 rotates around the support shaft 57. As the lever body 56 rotates, the hinge pin 56a also rotates and is pulled toward the upper end side of the inner bar 3b. The hinge pin 53 slides in the groove 52 toward the upper end side of the inner rod 3b through the rod 54 having one end fixed by the hinge pin 56a. The inner shaft 45 is pulled by the hinge pin 53 fixed to the rear end portion, and slides in the inner rod 3b to the upper end side. When the inner shaft 45 slides relatively to the upper end side with respect to the inner rod 3b, the interval between the washer 42 fixed to the tip of the inner shaft 45 with the screw 41 and the tip 46 of the inner rod 3b is narrowed. . As a result, the elastic rubber 43 provided at the distal end portion of the inner shaft 45 and sandwiched between the washer 42 and the distal end 46 of the inner rod 3b is compressed and the width in the longitudinal axis direction is reduced. The stretchable rubber 43 having a reduced width in the longitudinal axis swells in a radial direction perpendicular to the longitudinal axis. The elastic rubber 43 bulging in the radial direction abuts against the inner surface of the outer rod 3a at the bulging destination and applies a pressing force. Thus, the outer rod 3a and the inner rod 3b are brought into contact with the inner rod 3b through the stretchable rubber 43 which is in contact with the tip 46 and presses the inner surface against the outer rod 3a. The elastic rubber 43 is fixed so that it cannot slide relative to the frictional force of the elastic rubber 43. This state is a fixed state.

≪固定解除動作≫
外側棒3aと内側棒3bとの固定を解除するには、図2(A)に示すように、レバー本体56を操作して、取っ手部56cを内側棒3b表面から離間させ、内側棒3b表面にコ字状の下底が当接するような状態にすればよい。それに伴って、一連の上述の固定動作の逆の動作が行われる。
≪Unlock operation≫
To release the fixation between the outer rod 3a and the inner rod 3b, as shown in FIG. 2A, the lever main body 56 is operated to move the handle 56c away from the surface of the inner rod 3b, and the surface of the inner rod 3b. The bottom of the U-shape may be in contact with the bottom. Along with this, a series of operations opposite to the above-described fixing operations are performed.

<支柱の締付固定機構>
図2(C)に示すように、外側棒3aの内側棒3bが挿入される側の上端部には、雄ネジが切られた雄ネジ部36がある。雄ネジ部36は、端に向かって徐々に縮径するテーパー仕上げがされている。また、雄ネジ部36には、側面を径方向に貫通する長手軸方向に沿った細長いスリット37が設けられている。
<Tightening and fixing mechanism of the column>
As shown in FIG. 2 (C), there is a male screw portion 36 in which a male screw is cut at the upper end portion of the outer rod 3a on the side where the inner rod 3b is inserted. The male thread portion 36 is tapered so that the diameter gradually decreases toward the end. In addition, the male screw portion 36 is provided with an elongated slit 37 along the longitudinal axis direction that penetrates the side surface in the radial direction.

図2(D)〜(F)は、ネジ式ストッパーリング4の縦断面図であり、図2(G)、(H)は、ネジ式ストッパーリング4の右側面図である。ネジ式ストッパーリング4は、内側に雌ネジが切られ、外側棒3aの雄ネジ部36に外側から嵌められる。ネジ式ストッパーリング4は、内側に雌ネジ部65を有するリング本体64と、2つの締付用取っ手61と、各締付用取っ手61をリング本体64に取り付ける取っ手取付部63と、取付ピン62とで構成されている。   2D to 2F are longitudinal sectional views of the screw type stopper ring 4, and FIGS. 2G and 2H are right side views of the screw type stopper ring 4. The screw-type stopper ring 4 is internally threaded and is fitted from the outside to the male threaded portion 36 of the outer rod 3a. The screw-type stopper ring 4 includes a ring main body 64 having an internal thread portion 65 on the inner side, two fastening handles 61, a handle attaching portion 63 for attaching each fastening handle 61 to the ring main body 64, and an attachment pin 62. It consists of and.

取っ手取付部63は、リング本体64の外側面の対向する位置に2つ設けられている。各取っ手取付部63は、隙間を開けて対向する略矩形状の2つの板状体で構成されている。当該板状体の長辺の長さは、リング本体64の軸方向の長さとほぼ同じである。各取っ手取付部63は、各板状体の長辺がリング本体64の軸方向と平行になる向きに配置されている。締付用取っ手61は、棒状のバーで、一方の端部が各取っ手取付部63の対向する板状体の隙間に挿入され、対向する板状体に取付ピン62によりリング本体64の軸方向に回動自在に固定されている。   Two handle attachment portions 63 are provided at opposing positions on the outer surface of the ring main body 64. Each handle attachment portion 63 is composed of two substantially rectangular plate-like bodies facing each other with a gap therebetween. The length of the long side of the plate-like body is substantially the same as the length of the ring body 64 in the axial direction. Each handle attachment portion 63 is arranged in a direction in which the long side of each plate-like body is parallel to the axial direction of the ring main body 64. The fastening handle 61 is a bar-like bar, and one end thereof is inserted into the gap between the opposing plate-like bodies of each handle attaching portion 63, and the axial direction of the ring main body 64 is attached to the opposing plate-like body by the mounting pin 62. It is fixed to be freely rotatable.

図2(E)、(G)に示すように、ネジ式ストッパーリング4を締め付ける場合には、各締付用取っ手61をリング本体64から立てた状態にする。次に、各締付用取っ手61を両手指で掴み、リング本体64を外側棒3aの雄ネジ部36に嵌め合わせて回転させていく。当該リング本体64の回転に伴い、雄ネジ部36は徐々に縮径される。そして、周囲を雄ネジ部36で囲まれた内側棒3bは、当該雄ネジ部36で締め付けられ外側棒3aに固定される。尚、リング本体64の回転に伴い、スリット37はその幅が狭まるため、締め付ける力が弱くて済むようになっている。図2(D)、(H)に示すように、締め付け固定後は、各締付用取っ手61は、邪魔にならないように倒しておくことができる。   As shown in FIGS. 2 (E) and 2 (G), when the screw type stopper ring 4 is tightened, each tightening handle 61 is raised from the ring body 64. Next, each tightening handle 61 is grasped with both fingers, and the ring main body 64 is fitted to the male thread portion 36 of the outer rod 3a and rotated. As the ring main body 64 rotates, the male screw portion 36 is gradually reduced in diameter. The inner bar 3b surrounded by the male screw part 36 is fastened by the male screw part 36 and fixed to the outer bar 3a. In addition, since the width | variety of the slit 37 becomes narrow with rotation of the ring main body 64, the force to tighten | tighten will be sufficient. As shown in FIGS. 2D and 2H, after tightening and fixing, each tightening handle 61 can be tilted so as not to get in the way.

<足部の取付機構>
図3(A)、(B)は、転倒防止支柱1を使用した時の足部2の様子を示した平面図と縦断面図である。転倒防止支柱1の足部2は、足部本体21を地面に対してほぼ水平な状態に保持して、足部本体21に設けられた貫通孔22に地中に打ち込まれた杭を通している。足部本体21上には、円筒形の浮き上がり防止ウェイト9が、内面9aが杭の側面を囲むようにして置かれる。
<Foot mounting mechanism>
FIGS. 3A and 3B are a plan view and a longitudinal sectional view showing a state of the foot 2 when the fall prevention column 1 is used. The foot 2 of the fall-preventing support column 1 holds the foot main body 21 in a substantially horizontal state with respect to the ground, and passes through a pile driven into the through hole 22 provided in the foot main body 21. A cylindrical lifting prevention weight 9 is placed on the foot main body 21 so that the inner surface 9a surrounds the side surface of the pile.

足部2は、足部本体21と接続部23との屈曲部において、曲げ角が30°以上40°以下の範囲で外側棒3a(支柱3)の表面側に屈曲している。これにより、作業者は、杭に足部2を取り付けるに際して、転倒防止支柱1を地面に対して当該曲げ角で傾けた状態で運搬し、足部本体21の貫通孔22を杭の上方に合わせて、そのまま下せば杭に貫通孔22を通すことができる。そのため、一連の取り付け作業が容易に行える。また、杭を軸中心にして転倒防止支柱1を回動することができるので、足部2を杭に取り付けた後からでも、転倒防止支柱1を所定の方向に据え付けることができる。   The foot 2 is bent to the surface side of the outer rod 3a (the support column 3) in a bent portion between the foot main body 21 and the connecting portion 23 within a range of a bending angle of 30 ° or more and 40 ° or less. Thereby, when attaching the foot part 2 to the pile, the operator carries the fall prevention column 1 in a state inclined at the bending angle with respect to the ground, and aligns the through hole 22 of the foot body 21 to the upper side of the pile. If it is lowered as it is, the through hole 22 can be passed through the pile. Therefore, a series of attachment operations can be easily performed. Moreover, since the fall prevention column 1 can be rotated around the pile as an axis, the fall prevention column 1 can be installed in a predetermined direction even after the foot 2 is attached to the pile.

<取付部の取付機構>
図3(C)、(D)は、転倒防止支柱1を使用した時の取付部6の様子を示した平面図と正面図である。取付部6は、2つの金属板71,73が回転軸72で連結された蝶番を有し、一方の金属板71が内側棒3b(支柱3)の上端部51に溶接され、他方の金属板73がフェンスの柱FAと連結する連結部材7を備えている。そして、連結部材7を備えた他方の金属板73は、支柱3の長手軸に交差する回転軸72の軸回りに回動自在となっている。このため、フェンスの柱FAに傾きがあっても、当該傾きに合わせて他方の金属板73を柱FAに沿わせることができ、柱FAとの間でがたつきのないしっかりとした連結が可能となる。尚、支柱3を構成する外側棒3aと内側棒3bとは、相対的に長手軸回りに回動させて固定することができるため、柱FAが前後方向だけでなく左右方向に傾いている場合にも、当該傾きに合わせて他方の金属板73を柱FAに沿わせることができ、柱FAとの間でがたつきのないしっかりとした連結が可能となる。また、連結部材7には、面ファスナが用いられているため、何度でも簡単にやり直しができ、作業効率が良い。
<Mounting mechanism of mounting part>
FIGS. 3C and 3D are a plan view and a front view showing the state of the attachment portion 6 when the fall prevention column 1 is used. The mounting portion 6 has a hinge in which two metal plates 71 and 73 are connected by a rotating shaft 72, and one metal plate 71 is welded to the upper end portion 51 of the inner rod 3b (support 3), and the other metal plate. 73 is provided with a connecting member 7 for connecting with the fence pillar FA. The other metal plate 73 provided with the connecting member 7 is rotatable about the axis of the rotation shaft 72 that intersects the longitudinal axis of the column 3. For this reason, even if the fence column FA is inclined, the other metal plate 73 can be made to follow the column FA in accordance with the inclination, and a firm connection without rattling is possible with the column FA. It becomes. The outer rod 3a and the inner rod 3b constituting the column 3 can be relatively rotated about the longitudinal axis and fixed, so that the column FA is inclined not only in the front-rear direction but also in the left-right direction. In addition, the other metal plate 73 can be placed along the column FA in accordance with the inclination, and a firm connection without rattling can be made between the column FA. Further, since a hook-and-loop fastener is used for the connecting member 7, the connecting member 7 can be easily performed again and again, and the working efficiency is good.

<ガードフェンスの転倒防止>
図4は、複数のガードフェンスFの転倒防止に転倒防止支柱1を使用する様子を示した図である。隣り合うガードフェンスFは、それらの隣接する2つの柱FAが転倒防止支柱1の取付部6に設けられた連結部材7を用いて互いに連結されている。そして、この近くに杭Sが設けられ、当該転倒防止支柱1は、足部2の貫通孔22を直近の杭Sに通して取り付けられている。こうすることで、複数の柱FAをまとめて1つの面ファスナで固定でき、ガードフェンスFの転倒防止に使用する転倒防止支柱1の数を減らすことができ、作業効率が良い。
<Preventing falling of guard fence>
FIG. 4 is a diagram illustrating a state in which the fall prevention column 1 is used to prevent the fall of the plurality of guard fences F. Adjacent guard fences F are connected to each other using a connecting member 7 provided on the attachment portion 6 of the fall-preventing support column 1 with two adjacent pillars FA. And the pile S is provided near this, The said fall prevention support | pillar 1 is attached through the through-hole 22 of the foot | leg part 2 through the nearest pile S. As shown in FIG. By doing so, the plurality of pillars FA can be fixed together with one surface fastener, the number of the fall prevention pillars 1 used for preventing the guard fence F from falling down can be reduced, and the work efficiency is good.

尚、上述のように、内側棒3bが外側棒3aに挿入された安定した状態の支柱3は、全長が約0.8〜3.2mである。また、足部2は、屈曲部において、外側棒3a(支柱3)の表面側に30°以上40°以下の範囲で屈曲している。そのため、取付部6の地面からの高さ位置は、約0.40〜2.06mとなり、作業者が取付部6の取り付け作業をしやすい高さになっている。   Note that, as described above, the stable column 3 in which the inner rod 3b is inserted into the outer rod 3a has a total length of about 0.8 to 3.2 m. Further, the foot 2 is bent at the bent portion to the surface side of the outer bar 3a (support 3) in a range of 30 ° to 40 °. Therefore, the height position of the attachment portion 6 from the ground is about 0.40 to 2.06 m, and the height is easy for the operator to attach the attachment portion 6.

以上の構成と動作により、転倒防止支柱1は、支柱3が伸縮自在で、パイプ状の外側棒3aと、一部が外側棒3a内に挿入され軸方向にスライド自在の内側棒3bとを有し、内側棒3bまたは外側棒3aに、内側棒3bと外側棒3aが相対的にスライドできないように固定する固定状態と、内側棒3bと外側棒3aが相対的にスライドできるように固定を解除する解除状態とに切り替える切替手段を有している。このため、スライドできる状態の支柱3を準備して、杭Sには足部2を取り付け、フェンスFには取付部6を取り付けた後、その状態で切替レバー5の操作によりスライドができないようにすれば、支柱3をこの状態で固定することができ、転倒防止が可能となる。このように、転倒防止作業は手間がかからず、簡便に行える。   With the configuration and operation described above, the fall-preventing support column 1 has the support column 3 that can be expanded and contracted, the pipe-shaped outer bar 3a, and the inner bar 3b that is partially inserted into the outer bar 3a and is slidable in the axial direction. The fixed state in which the inner rod 3b and the outer rod 3a are fixed so as not to slide relative to the inner rod 3b or the outer rod 3a, and the fixing is released so that the inner rod 3b and outer rod 3a can slide relative to each other. Switching means for switching to the released state. For this reason, after preparing the strut 3 in a slidable state, attaching the foot part 2 to the pile S and attaching the attachment part 6 to the fence F, the sliding lever 5 cannot be slid by operating the switching lever 5 in that state. If it does so, the support | pillar 3 can be fixed in this state, and it will become possible to prevent a fall. As described above, the work of preventing the fall is simple and can be easily performed.

切替手段は、外側棒3a内に挿入された内側棒3bの一部に配置され外側棒3aの径方向に向けて膨出し当該外側棒3aの内面を押圧する押圧体と、押圧体を変形させる変形手段とを備えている。これにより、切替レバー5の操作により押圧体が変形し、内側棒3bの一部と外側棒3aの内面との間で変形した押圧体が、内側棒3bと外側棒3aとの間の相対的なスライドを押圧力により止めることができる。切替レバー5の操作は倒すか立てるかの操作であり、操作に手間がかからない。また、押圧体による押圧力は、押圧体の変形に起因しており、その変形量の調節は可能である。そのため、押圧力を調節することができる。   The switching means is disposed on a part of the inner bar 3b inserted into the outer bar 3a, bulges in the radial direction of the outer bar 3a, and presses the inner surface of the outer bar 3a, and deforms the pressing body. Deformation means. Thereby, the pressing body is deformed by the operation of the switching lever 5, and the pressing body deformed between a part of the inner bar 3b and the inner surface of the outer bar 3a is relatively between the inner bar 3b and the outer bar 3a. Can be stopped by pressing force. The operation of the switching lever 5 is an operation of depressing or raising, and the operation does not take time. Further, the pressing force by the pressing body is caused by the deformation of the pressing body, and the amount of deformation can be adjusted. Therefore, the pressing force can be adjusted.

変形手段は、押圧体を軸方向に所定の幅に縮小させるものである。すなわち、伸縮ゴム43(押圧体)を、内シャフト45の先端部に設けられワッシャ42と内側棒3bの先端46との間に挟んで、内シャフト45を後端側に引っ張ることにより、伸縮ゴム43(押圧体)を、長手軸方向に圧縮しその幅を所定の幅に縮小させるものである。構造が複雑ではなく、作製が容易である。   The deformation means is for reducing the pressing body in the axial direction to a predetermined width. That is, the elastic rubber 43 (pressing body) is sandwiched between the washer 42 provided at the front end portion of the inner shaft 45 and the front end 46 of the inner rod 3b, and the inner shaft 45 is pulled to the rear end side, thereby extending the elastic rubber. 43 (pressing body) is compressed in the longitudinal axis direction to reduce its width to a predetermined width. The structure is not complicated and easy to manufacture.

外側棒3aは、内側棒3bが挿入される側の端部に、端部を縮径し内側棒3bの外面を締め付ける締付固定手段を備えている。上述の押圧体による固定手段に加えて、当該締付固定手段も備えているため、内側棒3bと外側棒3aが相対的にスライドできないようにより確実に固定することができる。   The outer rod 3a is provided with a fastening means for reducing the diameter of the end and tightening the outer surface of the inner rod 3b at the end where the inner rod 3b is inserted. In addition to the fixing means by the pressing body, the fastening fixing means is also provided, so that the inner bar 3b and the outer bar 3a can be fixed more securely so that they cannot slide relative to each other.

連結部材7は、面ファスナであるから、隣り合うフェンスFの隙間に誤差があっても問題なく固定することができる。   Since the connecting member 7 is a hook and loop fastener, even if there is an error in the gap between the adjacent fences F, it can be fixed without any problem.

(1)杭Sを足部2の貫通孔22に通して浮き上がり防止ウェイト9を載せ、(2)柱FAに取付部6を面ファスナ7で固定し、(3)切替レバー5を倒して長さ固定するという簡単なステップで固定でき、逆の3ステップで簡単に取り外せるため、トラックの出入り等で着脱を繰り返す場合も迅速かつ容易に着脱できる。   (1) The pile S is passed through the through hole 22 of the foot 2 and the lifting prevention weight 9 is placed. (2) The mounting portion 6 is fixed to the pillar FA with the hook-and-loop fastener 7, and (3) the switching lever 5 is tilted and long. Since it can be fixed in a simple step of fixing and can be easily removed in the reverse three steps, it can be quickly and easily attached even when the truck is repeatedly put in and out of the truck.

尚、切替手段は、切替レバー5と、伸縮ゴム43と、ロッド54と、内シャフト45と、内シャフト45にネジ止めされたワッシャ42と、内側棒3bの先端46とに対応し、
押圧体は、伸縮ゴム43に対応し、
変形手段は、ロッド54と、内シャフト45と、内シャフト45にネジ止めされたワッシャ42と、内側棒3bの先端46とに対応し、
締付固定手段は、ネジ式ストッパーリング4に対応するが、
この発明は本実施形態に限られず他の様々な実施形態とすることができる。
The switching means corresponds to the switching lever 5, the elastic rubber 43, the rod 54, the inner shaft 45, the washer 42 screwed to the inner shaft 45, and the tip 46 of the inner rod 3b.
The pressing body corresponds to the elastic rubber 43,
The deformation means corresponds to the rod 54, the inner shaft 45, the washer 42 screwed to the inner shaft 45, and the tip 46 of the inner rod 3b.
The fastening means corresponds to the screw type stopper ring 4,
The present invention is not limited to this embodiment, and can be various other embodiments.

この発明は、転倒防止のための器具等の産業に利用することができる。   The present invention can be used in industries such as appliances for preventing falls.

1…転倒防止支柱
2…足部
3…支柱
3a…外側棒
3b…内側棒
4…ネジ式ストッパーリング
5…切替レバー
6…取付部
7…連結部材
DESCRIPTION OF SYMBOLS 1 ... Fall prevention support | pillar 2 ... Foot part 3 ... Support | pillar 3a ... Outer stick 3b ... Inner stick 4 ... Screw type stopper ring 5 ... Switching lever 6 ... Mounting part 7 ... Connecting member

Claims (4)

地面に設けられた杭と立設する仮設のフェンスとを連結して当該フェンスの転倒を防止する転倒防止支柱であって、
伸縮自在な支柱と、
前記支柱の上端部に配置され、前記フェンスに取り付ける取付部と、
前記支柱の下端部に配置され、前記杭に取り付ける足部とを備え
前記取付部は、前記フェンスと連結する連結部材を有し、
前記足部は、前記支柱の長手軸に交差する軸回りに屈曲する屈曲部を有する板状体で、前記屈曲部を挟んで接続部と足部本体を有し、前記接続部は前記支柱に接続され、前記足部本体は前記杭を通す貫通孔を有する
転倒防止支柱。
A fall prevention column that connects a pile provided on the ground and a temporary fence to be erected to prevent the fence from falling,
Telescopic struts,
An attachment portion that is disposed at the upper end of the column and is attached to the fence;
It is arranged at the lower end part of the support column, and comprises a foot part attached to the pile ,
The mounting portion has a connecting member for connecting to the fence,
The foot portion is a plate-like body having a bent portion that is bent around an axis that intersects the longitudinal axis of the support column, and has a connection portion and a foot main body across the bent portion, and the connection portion is attached to the support column. A fall prevention column that is connected and the foot body has a through hole through which the pile passes .
地面に設けられた杭と立設するフェンスとを連結して当該フェンスの転倒を防止する転倒防止支柱であって、
前記フェンスは、転倒防止しなければ転倒し得る仮設のフェンスであり、
伸縮自在な支柱と、
前記支柱の上端部に配置され、前記フェンスに取り付ける取付部と、
前記支柱の下端部に配置され、前記杭に取り付ける足部とを備え
前記取付部は、前記支柱の長手軸に交差する軸の軸回りに回動する回動手段と、前記回動手段よりも前記支柱と反対側に前記フェンスと連結する連結部材を有し、
前記足部は、前記回動手段の軸と平行な軸回りに屈曲する屈曲部を有する板状体で、前記杭を通す貫通孔を有し、
前記連結部材と前記フェンス、および前記足部と前記杭を簡単なステップで固定でき、逆のステップで簡単に取り外せて、着脱を繰り返す場合も迅速かつ容易に着脱できるようにした
転倒防止支柱。
A fall prevention strut that connects a pile provided on the ground and a fence to be erected to prevent the fence from falling,
The fence is a temporary fence that can fall if it is not prevented from falling,
Telescopic struts,
An attachment portion that is disposed at the upper end of the column and is attached to the fence;
It is arranged at the lower end part of the support column, and comprises a foot part attached to the pile ,
The mounting portion includes a rotating unit that rotates about an axis that intersects the longitudinal axis of the support column, and a connecting member that is connected to the fence on the opposite side of the support column from the rotating unit.
The foot portion is a plate-like body having a bent portion that is bent around an axis parallel to the axis of the rotating means, and has a through hole through which the pile passes.
The connecting member and the fence, and the foot and the pile can be fixed in a simple step, and can be easily removed in the reverse step, so that it can be quickly and easily removed even when it is repeatedly attached and detached. Prevention strut.
地面に設けられた杭と立設する仮設のフェンスとを連結して当該フェンスの転倒を防止する転倒防止支柱であって、
伸縮自在な支柱と、
前記支柱の上端部に配置され、前記フェンスに取り付ける取付部と、
前記支柱の下端部に配置され、前記杭に取り付ける足部とを備え
前記取付部は、前記支柱の長手軸に交差する軸の軸回りに回動する回動手段と、前記回動手段よりも前記支柱と反対側に前記フェンスの柱と連結する連結部材を有し、
前記連結部材は、複数の前記柱をまとめて固定できる構成である
転倒防止支柱。
A fall prevention column that connects a pile provided on the ground and a temporary fence to be erected to prevent the fence from falling,
Telescopic struts,
An attachment portion that is disposed at the upper end of the column and is attached to the fence;
It is arranged at the lower end part of the support column, and comprises a foot part attached to the pile ,
The mounting portion includes a rotating unit that rotates about an axis that intersects with the longitudinal axis of the support column, and a connecting member that is connected to the fence column on the opposite side of the support unit from the rotating unit. ,
The connecting member is configured to be able to fix the plurality of pillars together .
前記支柱は、パイプ状の外側棒と、一部が前記外側棒内に挿入され軸方向にスライド自在の内側棒とを有し、
前記内側棒または前記外側棒に、当該内側棒と外側棒が相対的にスライドできないように固定する固定状態と、当該内側棒と外側棒が相対的にスライドできるように前記固定を解除する解除状態とに切り替える切替手段を有し、
前記切替手段は、前記外側棒内に挿入された前記内側棒の一部に配置され前記外側棒の径方向に向けて膨出し当該外側棒の内面を押圧する押圧体と、前記押圧体を前記径方向に変形させる変形手段とを備え
前記変形手段は、前記内側棒の側面に直径方向に挿入された支軸に軸支されたレバー本体と、
先端が前記内側棒の先端から突出し、当該先端にワッシャが固定され、前記内側棒の内部に長手軸方向に設けられた内シャフトと、
一端が前記レバー本体の前記支軸から離間した箇所にヒンジピンにより固定され、他端が前記内シャフトの後端にヒンジピンにより固定されたロッドと、
を有し、
前記ワッシャと前記内側棒の先端との間に配置された弾力性のある素材で形成された前記押圧体を前記内側棒の軸方向に所定の幅に縮小させる
請求項1、2、または3記載の転倒防止支柱。
The support column has a pipe-shaped outer bar and an inner bar partially inserted into the outer bar and slidable in the axial direction.
A fixed state in which the inner bar and the outer bar are fixed to the inner bar or the outer bar so that the inner bar and the outer bar cannot slide relatively, and a released state in which the fixing is released so that the inner bar and the outer bar can slide relative to each other. And switching means for switching to
The switching means is disposed on a part of the inner rod inserted into the outer rod, and is bulged toward the radial direction of the outer rod, and presses the inner surface of the outer rod, and the pressing member Deformation means for deforming in the radial direction ,
The deforming means includes a lever body pivotally supported by a spindle inserted in a diametrical direction on a side surface of the inner rod,
A tip protrudes from the tip of the inner rod, a washer is fixed to the tip, and an inner shaft provided in the longitudinal direction inside the inner rod; and
A rod having one end fixed by a hinge pin at a position separated from the support shaft of the lever body, and the other end fixed by a hinge pin to the rear end of the inner shaft;
Have
The said press body formed with the elastic raw material arrange | positioned between the said washer and the front-end | tip of the said inner side bar is reduced to the predetermined | prescribed width | variety in the axial direction of the said inner side bar. Anti-falling prop.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020066907A (en) * 2018-10-24 2020-04-30 矢崎化工株式会社 Barricade fence
CN114427304A (en) * 2022-01-12 2022-05-03 张世江 Assembled type edge-facing protection device for cast-in-place concrete stairs

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513757U (en) * 1978-07-13 1980-01-29
JPS5862734U (en) * 1981-10-22 1983-04-27 日工株式会社 formwork support sabot
JPH1030348A (en) * 1996-07-16 1998-02-03 Kiju Nakamura Pipe expansion fixing device
JPH1161755A (en) * 1997-08-25 1999-03-05 Flex:Kk Enclosing plate and clamp connecting it
JP2012127464A (en) * 2010-12-17 2012-07-05 Shigeru Yoshino Clamping/fixing apparatus
JP5259363B2 (en) * 2008-10-07 2013-08-07 岡部株式会社 Angled bracket for pipe support

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513757U (en) * 1978-07-13 1980-01-29
JPS5862734U (en) * 1981-10-22 1983-04-27 日工株式会社 formwork support sabot
JPH1030348A (en) * 1996-07-16 1998-02-03 Kiju Nakamura Pipe expansion fixing device
JPH1161755A (en) * 1997-08-25 1999-03-05 Flex:Kk Enclosing plate and clamp connecting it
JP5259363B2 (en) * 2008-10-07 2013-08-07 岡部株式会社 Angled bracket for pipe support
JP2012127464A (en) * 2010-12-17 2012-07-05 Shigeru Yoshino Clamping/fixing apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020066907A (en) * 2018-10-24 2020-04-30 矢崎化工株式会社 Barricade fence
CN114427304A (en) * 2022-01-12 2022-05-03 张世江 Assembled type edge-facing protection device for cast-in-place concrete stairs
CN114427304B (en) * 2022-01-12 2023-08-22 张世江 Assembled type edge protection device for cast-in-place concrete stairway

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