JP2004232351A - Safety net device - Google Patents

Safety net device Download PDF

Info

Publication number
JP2004232351A
JP2004232351A JP2003022725A JP2003022725A JP2004232351A JP 2004232351 A JP2004232351 A JP 2004232351A JP 2003022725 A JP2003022725 A JP 2003022725A JP 2003022725 A JP2003022725 A JP 2003022725A JP 2004232351 A JP2004232351 A JP 2004232351A
Authority
JP
Japan
Prior art keywords
arm
building
fall prevention
prevention net
outside
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.)
Pending
Application number
JP2003022725A
Other languages
Japanese (ja)
Inventor
Nobuaki Azuma
信暁 東
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to JP2003022725A priority Critical patent/JP2004232351A/en
Publication of JP2004232351A publication Critical patent/JP2004232351A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a falling prevention safety net device mounting a safety net on the outside of a building even if the building is under construction without a scaffold. <P>SOLUTION: An arm 18 is temporarily fixed to a steel framed column 4 of the building 2 by a temporary fixed means 16, and the safety net 12 is engaged with a first engaging device 36 provided along the arm 18 and a second engaging device 38 provided along the outside of a beam. The arm 18 includes an arm member 20 projected on the approximate horizontal, a vertical member 24 placed downward along the surface of the steel framed column 4 fixed to a base 22 of the arm member 20 and an inclined member 26 placed between the lower end of the vertical member 24 and the front end of the arm member 20. The temporary fixed means 16 has a belt 30 wound on the steel framed column 4 by extending in the horizontal direction from the base 22 of the arm 18. An L-shaped magnet 34 is provided to a site abutting on a corner of the steel framed column 4 in the belt 30. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、建物の建築作業中などに物や人が落下するのを防止する落下防止ネットを建物の外側に取り付けるための装置に関する。
【0002】
【従来の技術】
柱と梁を有して構成される建物の建築作業中には、作業員は露出した梁の上を移動しながら作業を行う。この作業中に物や作業員が落下するのを防止するため、落下防止ネットを建物に取り付ける。この落下防止ネットは、建物の内側に取り付けられるもの(特開平10−082186参照)が実際にはほとんどであり、建物の外側に取り付けられるもの(特開平2001−329695、特開平07−310437参照)は、建物の外側に設けられパイプ部材からなる足場に取り付けられる。
【0003】
【発明が解決しようとする課題】
しかしながら、建物によっては足場を全く設けずに梁の上で作業をする場合も多い。また、途中から設ける場合も、それまでは足場なしで梁の上で作業しなければならない。これらの場合に、建物の内側に落下防止ネットを設けても、建物の外側への落下は防止できないものであった。
【0004】
この発明は、以上の課題を解決するためになされたもので、足場なしで建築作業中の建物であっても、建物の外側に落下防止ネットを取り付けられる落下防止ネット装置を提供することを目的とする。
【0005】
【課題を解決するための手段】
本発明は上記目的を達成するため、第1の発明は、柱と梁を有して構成される建物の外側に落下防止ネットを取り付けるための装置において、柱に仮固定され建物の外側に突出されるアームと、この仮固定を行う仮固定手段と、前記アームに沿って設けられた第1の係止具と、前記梁の外側に沿って設けられた第2の係止具と、これら係止具に係止される落下防止ネットと、を有することを特徴とする落下防止ネット装置である。
【0006】
第2の発明は、前記アームは、略水平に突出されるアーム部材と、このアーム部材の基部に固定され前記柱の表面に沿って下方に配置される上下部材と、この上下部材の下端と前記アーム部材の先端との間に配置される傾斜部材と、を有してなり、前記仮固定手段は、前記アームの基部から水平方向に伸び前記柱に巻き付けられるベルトを有してなることを特徴とする落下防止ネット装置である。
【0007】
第3の発明は、前記柱は鉄骨柱であり、前記ベルトにはこの鉄骨柱の角部に当接する部位にL字状の磁石が設けられていることを特徴とする落下防止ネット装置である。
【0008】
【発明の実施の形態】
この発明の一実施の形態を、図1〜図5に示す。
図1に示すように、この建築中の建物2は、矩形断面を有する鉄骨柱4と、この鉄骨柱4に結合されI型断面を有する鉄骨梁6によって構成される。図中、右側が建物2の外側8になり、左側が建物2の内側10になる。この外側8に落下防止ネット12を取り付けるために、この実施形態の装置14が用いられる。
【0009】
すなわち、建物2の鉄骨柱4に仮固定手段16によりアーム18を仮固定する。このアーム18は、略水平に突出され下向きのコの字断面(図4参照)のアーム部材20を有する。また、アーム部材20の先端は上方に向かってL字状に突出している。このアーム部材20に沿って両側には、長手方向に等間隔で複数箇所に第1の係止具36が設けられる。第一の係止金具はJ型の形状をした金具で、アーム部材20に溶接される。
【0010】
このアーム部材20の基部22には、鉄骨柱4の表面に沿って下方に配置される板状の上下部材24が固定される。この上下部材24の下端とアーム部材20の先端との間に傾斜部材26が補強部材として配置される。
【0011】
仮固定手段16は、アーム18の基部22と上下部材24との固定部分28からベルト30が、左右に水平方向に伸び、鉄骨柱4に巻き付けられる。このベルト30には、締付部32が設けられ、ベルト30を締め付けて緩まないようにする。また、ベルト30にはこの鉄骨柱4の角部に当接する部位に、L字状の磁石34が設けられ、角部とこのL字状とが嵌合する。巻き付けは必要に応じて何回か行われる。
【0012】
鉄骨梁6の建物外側に沿って、鉄骨梁6の長手方向に等間隔で複数箇所に第2の係止具38が設けられる。第2の係止具38は、図5に示すように、コの字断面形状を有する嵌合部40が、鉄骨梁6のI型断面の下側の水平フランジ42の縁部に嵌合する。この嵌合部40の上面には、ハンドル44つきのボルト46が螺合して貫通し、貫通した先端が水平フランジ42の表面に当接される。嵌合部40のコの字の背部48には、J型の形状をした金具50が溶接される。
【0013】
複数設けられる第1および第2の係止具36,38のJ型の金具50に、落下防止ネット12の縁が係止されて取り付けられる。
【0014】
(実施形態の作用効果)
以上の実施形態によれば、建物2の鉄骨柱4に仮固されたアーム18のに設けられた第1の係止具36と、鉄骨梁6に設けられた第2の係止具38とに落下防止ネット12を係止することで、足場なしでも、建物2の外側8に落下防止ネット12を取り付けられる。また、アーム部材20の上方に向かってL字状に突出する先端にも係止金具36は設けられるので、この係止金具36に落下防止ネット12の縁部を係止することで、落下防止ネット12の外側の縁は、上方に向かってL字状に突出した状態で取り付けられる。よって、落下物が、この落下防止ネット12の突出した縁部にひっかかることが期待でき、さらに落下防止ネット12の外側へ落下することを防止できる。
【0015】
また、アーム18はアーム部材20、上下部材24、傾斜部材26により簡単な構造を有し、装置14のコストを抑えられる。
また、アーム18は駆り固定手段のベルト30により鉄骨柱4に固定されるので、溶接などのように鉄骨柱4を傷つけずに固定できる。
【0016】
また、仮固定手段16の磁石34が鉄骨柱4に吸着しベルト30の位置決めが簡単で、巻き付け作業が容易になる。また、ベルト30が鉄骨柱4の角部に擦られて磨耗することを抑止できる。
また、アーム18の構造から、落下防止ネット12を介してアーム18にかかる力は、ベルト30を鉄骨柱4の表面から直角に引き剥がそうとする力になるので、ベルト30を同表面に沿って移動させるなどの力に比べ、大きな力に耐えられる。
【0017】
(他の実施形態)
以上の実施形態では、たとえば建物2の南側の外側8と、東側の外側8というように、二つの外側8が交差する場所において、アーム18は建物2の角部、すなわち鉄骨柱4の部分で2本設けられるものであった(図1、図2、図3(A))であったが、他の実施形態では図6に示すように1本とすることも出来る。すなわち、アーム18を構成する上下部材24をL字状断面として、このL字状の部分を鉄骨柱4の角部に当接し、アーム部材20を鉄骨柱4の対角線と略同じ向きに略45度の方向に突出させる。これにより、1本のアーム部材20の両側に設けられた第1の係止具36のうち、一方の側にたとえば南側の落下防止ネット12を係止し、他方の側に東側の落下防止ネット12を係止することが出来る。
【0018】
【発明の効果】
以上説明したように、第一の発明によれば、建物の柱に仮固定手段によりアームを仮固定し、このアームに沿って設けられた第1の係止具と、梁に沿って設けられた第2の係止具とに落下防止ネットを係止することで、足場なしで建築作業中の建物であっても、建物の外側に落下防止ネットを取り付けられる。
【0019】
また、第二の発明によれば、さらに、アームはアーム部材、上下部材、傾斜部材により簡単な構造を有し、装置のコストを抑えられ、また、ベルトにより柱に固定されるので、柱を傷つけずに固定できる。
【0020】
また、第三の発明によれば、さらに、アームの固定において、磁石が鉄骨柱に吸着しベルトの巻き付け作業が容易になる。また、ベルトが鉄骨柱の角部に擦られて磨耗することを抑止できる。
【図面の簡単な説明】
【図1】この発明の一実施形態を示す装置の斜視図である。
【図2】図1の平面図である。
【図3】(A)は図2の要部を示す平面図
(B)は(A)の側面図である。
【図4】図3(B)の1本のアームを示す正面図である。
【図5】図1の第1の係止具を示す拡大側面図である。
【図6】この発明の他の実施形態を示す装置の平面図である。
【符号の説明】
2…建物、
4…鉄骨柱、
6…鉄骨梁、
8…外側、
10…内側、
12…落下防止ネット、
14…装置、
16…仮固定手段、
18…アーム、
20…アーム部材、
22…基部、
24…上下部材、
26…傾斜部材、
28…固定部分、
30…ベルト、
32…締付部、
34…磁石、
36…第1の係止具、
38…第2の係止具、
40…嵌合部、
42…水平フランジ、
44…ハンドル、
46…ボルト、
48…背部、
50…金具。
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching a fall prevention net for preventing an object or a person from falling during construction work of a building, for example, on the outside of the building.
[0002]
[Prior art]
During construction work of a building having columns and beams, a worker works while moving on the exposed beams. A fall prevention net is attached to the building to prevent objects and workers from falling during this work. Most of the fall prevention nets are actually mounted inside the building (see JP-A-10-082186), and are actually mounted outside the building (see JP-A-2001-329699 and JP-A-07-310437). Is attached to a scaffold made of pipe members provided outside the building.
[0003]
[Problems to be solved by the invention]
However, in some buildings, work is often performed on beams without any scaffolding. Also, even if it is installed from the middle, it is necessary to work on the beam without a scaffold until then. In these cases, even if the fall prevention net is provided inside the building, the fall outside the building cannot be prevented.
[0004]
The present invention has been made in order to solve the above problems, and has an object to provide a fall prevention net device that can attach a fall prevention net to the outside of a building even if the building is under construction without a scaffold. And
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a device for attaching a fall prevention net outside a building having columns and beams, wherein the device is temporarily fixed to a pillar and protrudes outside the building. Arm, a temporary fixing means for temporarily fixing the arm, a first locking tool provided along the arm, a second locking tool provided along the outside of the beam, And a fall prevention net locked by the locking member.
[0006]
According to a second aspect of the present invention, the arm includes an arm member protruding substantially horizontally, an upper and lower member fixed to a base of the arm member and disposed below the surface of the pillar, and a lower end of the upper and lower member. An inclined member disposed between the arm member and the tip end, and the temporary fixing means includes a belt extending in a horizontal direction from a base of the arm and wound around the pillar. This is a fall prevention net device.
[0007]
A third invention is the fall prevention net device, wherein the pillar is a steel pillar, and the belt is provided with an L-shaped magnet at a portion abutting on a corner of the steel pillar. .
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
One embodiment of the present invention is shown in FIGS.
As shown in FIG. 1, a building 2 under construction is constituted by a steel column 4 having a rectangular cross section and a steel beam 6 connected to the steel column 4 and having an I-shaped cross section. In the figure, the right side is the outside 8 of the building 2, and the left side is the inside 10 of the building 2. The device 14 of this embodiment is used to attach the fall prevention net 12 to the outer side 8.
[0009]
That is, the arm 18 is temporarily fixed to the steel column 4 of the building 2 by the temporary fixing means 16. The arm 18 has an arm member 20 projecting substantially horizontally and having a downward U-shaped cross section (see FIG. 4). The tip of the arm member 20 projects upward in an L-shape. First locking members 36 are provided at a plurality of positions on both sides along the arm member 20 at equal intervals in the longitudinal direction. The first latch is a J-shaped bracket, which is welded to the arm member 20.
[0010]
A plate-like upper and lower member 24 disposed below the surface of the steel column 4 is fixed to the base 22 of the arm member 20. An inclined member 26 is disposed between the lower ends of the upper and lower members 24 and the tip of the arm member 20 as a reinforcing member.
[0011]
In the temporary fixing means 16, a belt 30 extends horizontally from side to side from a fixing portion 28 between the base 22 of the arm 18 and the upper and lower members 24, and is wound around the steel column 4. The belt 30 is provided with a fastening portion 32 to fasten the belt 30 so as not to be loosened. The belt 30 is provided with an L-shaped magnet 34 at a position in contact with the corner of the steel column 4, and the corner and the L-shaped are fitted. Winding is performed several times as needed.
[0012]
A plurality of second locking members 38 are provided at a plurality of locations along the outside of the building of the steel beam 6 at equal intervals in the longitudinal direction of the steel beam 6. As shown in FIG. 5, the fitting portion 40 having the U-shaped cross section of the second locking member 38 is fitted to the edge of the horizontal flange 42 on the lower side of the I-shaped cross section of the steel beam 6. . A bolt 46 with a handle 44 is threaded and penetrates the upper surface of the fitting portion 40, and the penetrated tip abuts on the surface of the horizontal flange 42. A J-shaped metal fitting 50 is welded to the U-shaped back part 48 of the fitting part 40.
[0013]
The edge of the fall prevention net 12 is locked and attached to the J-shaped metal fitting 50 of the plurality of first and second locking tools 36 and 38.
[0014]
(Operation and Effect of Embodiment)
According to the above embodiment, the first locking member 36 provided on the arm 18 temporarily fixed to the steel column 4 of the building 2 and the second locking member 38 provided on the steel beam 6 By locking the fall prevention net 12 to the outside, the fall prevention net 12 can be attached to the outside 8 of the building 2 without a scaffold. Further, since the locking member 36 is provided also at the tip protruding in an L-shape toward the upper side of the arm member 20, the edge of the fall prevention net 12 is locked to the locking member 36 to prevent the fall. The outer edge of the net 12 is attached so as to protrude upward in an L-shape. Therefore, it is possible to expect that the falling object gets caught on the protruding edge of the fall prevention net 12, and further, it is possible to prevent the fallen object from falling outside the fall prevention net 12.
[0015]
Further, the arm 18 has a simple structure by the arm member 20, the upper and lower members 24, and the inclined member 26, and the cost of the device 14 can be suppressed.
Further, since the arm 18 is fixed to the steel column 4 by the driving and fixing means belt 30, it can be fixed without damaging the steel column 4 such as welding.
[0016]
In addition, the magnet 34 of the temporary fixing means 16 is attracted to the steel column 4 and the positioning of the belt 30 is simple, so that the winding operation becomes easy. Further, it is possible to prevent the belt 30 from being worn by being rubbed by the corners of the steel column 4.
Also, due to the structure of the arm 18, the force applied to the arm 18 via the fall prevention net 12 is a force for peeling the belt 30 at a right angle from the surface of the steel column 4. It can withstand a large force compared to the force of moving.
[0017]
(Other embodiments)
In the above embodiment, at a place where the two outsides 8 intersect, for example, the outside 8 on the south side of the building 2 and the outside 8 on the east side, the arm 18 is at the corner of the building 2, that is, at the portion of the steel column 4. Although two wires are provided (FIGS. 1, 2, and 3A), in another embodiment, one wire can be provided as shown in FIG. That is, the upper and lower members 24 constituting the arm 18 are formed into an L-shaped cross section, and the L-shaped portion is brought into contact with the corner of the steel column 4, and the arm member 20 is moved substantially 45 degrees in the same direction as the diagonal line of the steel column 4. Protrude in the direction of degrees. Thereby, of the first locking members 36 provided on both sides of one arm member 20, for example, the south side fall prevention net 12 is locked on one side, and the east side fall prevention net 12 is locked on the other side. 12 can be locked.
[0018]
【The invention's effect】
As described above, according to the first aspect, the arm is temporarily fixed to the pillar of the building by the temporary fixing means, and the first locking member provided along the arm and the arm provided along the beam. By locking the fall prevention net with the second locking tool, the fall prevention net can be attached to the outside of the building even if the building is under construction without a scaffold.
[0019]
Further, according to the second aspect, the arm has a simple structure with the arm member, the upper and lower members, and the inclined member, which can reduce the cost of the device, and is fixed to the column by the belt. Can be fixed without damage.
[0020]
Further, according to the third aspect, in fixing the arm, the magnet is attracted to the steel column and the operation of winding the belt becomes easier. Further, it is possible to prevent the belt from being worn by being rubbed by the corners of the steel column.
[Brief description of the drawings]
FIG. 1 is a perspective view of an apparatus showing an embodiment of the present invention.
FIG. 2 is a plan view of FIG.
3A is a plan view showing a main part of FIG. 2, and FIG. 3B is a side view of FIG.
FIG. 4 is a front view showing one arm of FIG. 3 (B).
FIG. 5 is an enlarged side view showing the first locking tool of FIG. 1;
FIG. 6 is a plan view of an apparatus showing another embodiment of the present invention.
[Explanation of symbols]
2 ... building,
4 ... steel frame,
6 ... steel beam,
8 ... outside,
10 ... inside,
12 ... fall prevention net,
14 ... device,
16 temporary fixing means,
18 ... arm,
20 ... arm member,
22 ... base,
24 ... upper and lower members,
26 ... inclined member,
28 ... fixed part,
30 ... belt,
32 ... fastening part,
34 ... magnet,
36 ... the first locking device,
38: a second locking device,
40 ... fitting part,
42 ... horizontal flange,
44 ... handle,
46 ... bolt,
48 ... back,
50 ... metal fittings.

Claims (3)

柱と梁を有して構成される建物の外側に落下防止ネットを取り付けるための装置において、柱に仮固定され建物の外側に突出されるアームと、この仮固定を行う仮固定手段と、前記アームに沿って設けられた第1の係止具と、前記梁の外側に沿って設けられた第2の係止具と、これら係止具に係止される落下防止ネットと、を有することを特徴とする落下防止ネット装置。In an apparatus for attaching a fall prevention net to the outside of a building having columns and beams, an arm temporarily fixed to a pillar and protruding to the outside of a building, temporary fixing means for performing this temporary fixing, A first locking tool provided along the arm, a second locking tool provided along the outside of the beam, and a fall prevention net locked by the locking tools. A fall prevention net device. 前記アームは、略水平に突出されるアーム部材と、このアーム部材の基部に固定され前記柱の表面に沿って下方に配置される上下部材と、この上下部材の下端と前記アーム部材の先端との間に配置される傾斜部材と、を有してなり、前記仮固定手段は、前記アームの基部から水平方向に伸び前記柱に巻き付けられるベルトを有してなることを特徴とする請求項1に記載の落下防止ネット装置。The arm includes an arm member projecting substantially horizontally, an upper and lower member fixed to a base of the arm member and disposed below the surface of the column, a lower end of the upper and lower member, and a tip of the arm member. And an inclined member disposed between the arm and the temporary fixing means, wherein the temporary fixing means includes a belt extending in a horizontal direction from a base of the arm and wound around the pillar. 2. The fall prevention net device according to 1. 前記柱は鉄骨柱であり、前記ベルトにはこの鉄骨柱の角部に当接する部位にL字状の磁石が設けられていることを特徴とする請求項2に記載の落下防止ネット装置。The fall prevention net device according to claim 2, wherein the pillar is a steel pillar, and the belt is provided with an L-shaped magnet at a position abutting on a corner of the steel pillar.
JP2003022725A 2003-01-30 2003-01-30 Safety net device Pending JP2004232351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003022725A JP2004232351A (en) 2003-01-30 2003-01-30 Safety net device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003022725A JP2004232351A (en) 2003-01-30 2003-01-30 Safety net device

Publications (1)

Publication Number Publication Date
JP2004232351A true JP2004232351A (en) 2004-08-19

Family

ID=32951732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003022725A Pending JP2004232351A (en) 2003-01-30 2003-01-30 Safety net device

Country Status (1)

Country Link
JP (1) JP2004232351A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2352389A1 (en) * 2007-10-05 2011-02-18 Jorge Ismael Perez Arraiza Folding protection system for the previous construction of the formwork. (Machine-translation by Google Translate, not legally binding)
KR101204930B1 (en) 2007-12-20 2012-11-26 재단법인 포항산업과학연구원 Backing plate for welding h-beam to steel pipe wheel
CN104343244A (en) * 2014-10-08 2015-02-11 广西建工集团第三建筑工程有限责任公司 Safety net capable of automatically controlling movement
JP2019011556A (en) * 2017-06-29 2019-01-24 日本電設工業株式会社 Fall preventive net mounted on square column
JP7085301B1 (en) 2022-01-28 2022-06-16 株式会社ソエジマ Manufacturing method of long steel materials for beams and long steel materials for beams

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2352389A1 (en) * 2007-10-05 2011-02-18 Jorge Ismael Perez Arraiza Folding protection system for the previous construction of the formwork. (Machine-translation by Google Translate, not legally binding)
KR101204930B1 (en) 2007-12-20 2012-11-26 재단법인 포항산업과학연구원 Backing plate for welding h-beam to steel pipe wheel
CN104343244A (en) * 2014-10-08 2015-02-11 广西建工集团第三建筑工程有限责任公司 Safety net capable of automatically controlling movement
JP2019011556A (en) * 2017-06-29 2019-01-24 日本電設工業株式会社 Fall preventive net mounted on square column
JP7085301B1 (en) 2022-01-28 2022-06-16 株式会社ソエジマ Manufacturing method of long steel materials for beams and long steel materials for beams
WO2023145770A1 (en) * 2022-01-28 2023-08-03 株式会社ソエジマ Method for producing elongated steel material and elongated steel material
JP2023110321A (en) * 2022-01-28 2023-08-09 株式会社ソエジマ Production method of long steel member for beam and long steel member for beam

Similar Documents

Publication Publication Date Title
JP2012132157A (en) Preceding balustrade
JP4160581B2 (en) Anchor bolt position retaining bracket and position fixing structure, and steel column construction method using the same
JP2004232351A (en) Safety net device
KR20200126688A (en) Safety device for inter-layer slab
JP3400794B2 (en) Temporary members for handrails
JP5773469B1 (en) Suspended scaffolding
JP2008208687A (en) Aseismic feinforcing device of ceiling hang bolt
JPH11303411A (en) Fixture and mounting structure for fall preventive tool
JP2016008479A (en) Attachment device for ceiling board material, ceiling structure using the attachment device, and construction method for the ceiling board material
JP6689073B2 (en) Scaffolding board fixing device
JP2004346571A (en) Baseboard for scaffolding
JP2009018901A (en) Catch prevention device
JP2003239530A (en) Scaffold board regulation fitting for frame scaffold
JP7240255B2 (en) Floor panel fastening structure and floor panel bolt fastening method
JP6261317B2 (en) Scaffold support structure
JP4282330B2 (en) Prop post
JP2008248538A (en) Mounting fitting
JPH0711236Y2 (en) Scaffolding equipment
JP6844919B2 (en) Fixture
JP4854306B2 (en) Master rope attachment device
JP2502031Y2 (en) Safety handrail frame for gate type building frame
JPS631532Y2 (en)
JP3003541U (en) Struts for tensioning the safety master rope
JP4321947B2 (en) Ladder equipment
JP2006037552A (en) Wale mounting structure