JP6461055B2

JP6461055B2 - Metal scaffolding plate fixing bracket

Info

Publication number: JP6461055B2
Application number: JP2016153306A
Authority: JP
Inventors: 章浩渡
Original assignee: 株式会社国元商会
Priority date: 2016-08-04
Filing date: 2016-08-04
Publication date: 2019-01-30
Anticipated expiration: 2036-08-04
Also published as: JP2018021380A

Description

本発明は、水平に架設された足場板支持用鋼管の上に載置された金属製足場板を、当該足場板支持用鋼管に固定するための金具に関するものである。 The present invention relates to a metal fitting for fixing a metal scaffolding plate placed on a horizontally installed scaffolding plate supporting steel pipe to the scaffolding plate supporting steel pipe.

仮設足場は、垂直に立設された支柱用鋼管を利用して、同一高さで水平に架設された少なくとも２本の足場板支持用鋼管の上に足場板を載置して組み立てられるが、安全性を高めるために前記足場板は、足場板支持用鋼管に固定される。特許文献を示すことは出来ないが、一般的には、番線を利用して足場板を足場板支持用鋼管に固定していた。木材を帯状に裁断された木製足場板の場合は、番線により足場板支持用鋼管に足場板を緊縛することになるが、近年は、金属製足場板、即ち、帯状金属板の両側辺下側に、補強用側板部が折曲連設された金属製足場板、が多用されている。 The temporary scaffolding is assembled by placing the scaffolding plate on at least two scaffolding plate supporting steel pipes installed horizontally at the same height, using the steel pipes for the pillars erected vertically. In order to enhance safety, the scaffold plate is fixed to a steel plate for supporting the scaffold plate. Although patent documents cannot be shown, in general, the scaffold plate is fixed to the steel plate for supporting the scaffold plate using a wire. In the case of a wooden scaffold board cut into strips of wood, the scaffolding board will be bound to the steel pipe for supporting the scaffold board with a wire, but in recent years, metal scaffolding boards, that is, the lower side of both sides of the strip metal sheet In addition, a metal scaffold plate in which the reinforcing side plate portion is continuously bent is frequently used.

上記のような金属製足場板では、両側辺下側に連設されている補強用側板部の強度を高めるために、当該補強用側板部を、表面帯状板部から折曲連設された垂直側板部と、この垂直側板部の下側辺から内側に折曲連設された水平板部と、この水平板部の内側辺から上向きに折曲連設された垂直立ち上がり板部とから成る溝形断面形状に構成されている。このような金属製足場板を、番線で足場板支持用鋼管に緊縛する方法では、番線が金属製足場板の外周面となじみ難いので、がたつきなく強固に足場板支持用鋼管に緊縛することが困難であるだけでなく、表面に露出している番線が、この足場板上を歩行する作業者の足に引っ掛かり易く、安全面でも問題があった。換言すれば、上記のような金属製足場板を、比較的簡単に、しかも当該金属製足場板の内側空間を利用して強固に、足場板支持用鋼管に固定出来るような金具は、考えられていなかった。 In the metal scaffolding plate as described above, in order to increase the strength of the reinforcing side plate portion connected to the lower side of both sides, the reinforcing side plate portion is bent vertically from the surface strip plate portion. A groove comprising a side plate portion, a horizontal plate portion bent inward from the lower side of the vertical side plate portion, and a vertical rising plate portion bent continuously from the inner side of the horizontal plate portion. It has a cross-sectional shape. In the method of binding such a metal scaffolding plate to the steel plate for supporting the scaffolding plate with a wire, the wire is difficult to fit with the outer peripheral surface of the metal scaffolding plate, so it is firmly bound to the steel plate for supporting the scaffolding plate without rattling. This is not only difficult, but the wire exposed on the surface is easily caught on the foot of the worker walking on the scaffold board, and there is a problem in terms of safety. In other words, a metal fitting that can fix the metal scaffold plate as described above to the steel plate for supporting the scaffold plate relatively easily and firmly using the inner space of the metal scaffold plate is conceivable. It wasn't.

本発明は、上記のような従来の問題点を解消することのできる金属製足場板の固定金具を提案するものであって、本発明に係る金属製足場板の固定金具は、後述する実施例との関係を理解し易くするために、当該実施例の説明において使用した参照符号を括弧付きで付して示すと、水平に架設された足場板支持用鋼管(3)の上に載置された金属製足場板(2)を前記足場板支持用鋼管(3)に固定する金具であって、前記足場板支持用鋼管(3)に着脱自在に締結されるクランプ(12)と、このクランプ(12)に取り付けられた足場板係止板(13)とから成り、前記クランプ(12)は、連結支軸(14)を介して互いに開閉自在に連結されたベース部材(15)とカバー部材(16)、及びベース部材(15)の遊端部とカバー部材(16)の遊端部とを互いに締結する係脱自在なクランプ用ボルトナット(17)から成り、前記足場板係止板(13)は、前記ベース部材(15)の平坦底板部(15b)の外側に、１本の取付け用ボルトナット(18)で取り付けられた取付け板部(19)と、この取付け板部(19)から一体に連設された係止片(21a)から成り、前記取付け用ボルトナット(18)は、前記取付け板部(19)の外側にナット(18b)が位置する向きに配置され、前記平坦底板部(15b)と前記足場板係止板(13)の取付け板部(19)には、互いに嵌合して前記取付け用ボルトナット(18)の周りの相対回転を阻止する回り止め用突起(22a)と孔(23a)が設けられ、前記取付け板部(19)には、前記クランプ(12)のベース部材(15)の外側へ、前記足場板支持用鋼管(3)の長さ方向に延出する延出板部(20a)が連設され、この延出板部(20a)は、その遊端の巾が前記取付け板部(19)の巾よりも狭められ、前記係止片(21a)は、前記延出板部(20a)の遊端から、前記足場板支持用鋼管(3)のある側に折曲形成され、この係止片(21a)の下側縁は、前記取付け板部(19)の表面に対して傾斜した構成になっている。 The present invention proposes a metal scaffolding plate fixing bracket capable of solving the above-mentioned conventional problems, and the metal scaffolding plate fixing bracket according to the present invention is an embodiment described later. In order to make it easier to understand the relationship, the reference numerals used in the description of the examples are shown in parentheses and are placed on a steel plate (3) for supporting a scaffolding plate installed horizontally. A metal plate for fixing the metal scaffolding plate (2) to the steel plate for supporting the scaffolding plate (3), a clamp (12) removably fastened to the steel plate for supporting the scaffolding plate (3), and the clamp A base plate (15) and a cover member, which are connected to each other via a connecting support shaft (14). (16), and a detachable clamp bolt for fastening the free end of the base member (15) and the free end of the cover member (16) to each other. The scaffold plate locking plate (13) is attached to the outside of the flat bottom plate portion (15b) of the base member (15) with a single mounting bolt nut (18). It consists of a plate portion (19) and a locking piece (21a) integrally connected from the mounting plate portion (19), and the mounting bolt nut (18) is located outside the mounting plate portion (19). The nut (18b) is disposed in the direction in which it is positioned, and the mounting plate portion (19) of the flat bottom plate portion (15b) and the scaffolding plate locking plate (13) are fitted to each other and the mounting bolt nut ( 18) is provided with a rotation-preventing projection (22a) and a hole (23a) for preventing relative rotation around the mounting plate portion (19) to the outside of the base member (15) of the clamp (12). The extension plate portion (20a) extending in the length direction of the steel plate for supporting the scaffold plate (3) is continuously provided, and the extension plate portion (20a) has a width of the free end of the mounting plate portion. Narrower than the width of (19), the locking piece (21a), From the free end of the extension plate portion (20a), it is bent to the side where the steel plate for supporting the scaffold plate (3) is located, and the lower edge of the locking piece (21a) is the mounting plate portion (19 ) Is inclined with respect to the surface.

上記本発明の構成によれば、前記取付け用ボルトナットが、先に説明した構造の金属製足場板の裏面の直下に位置する向きで、クランプを当該金属製足場板の内側に入り込ませると共に、傾斜下側縁が下向きになっている前記係止片を、前記金属製足場板の補強用側板部の内側に入り込ませる。この状態でクランプのカバー部材を上動させて、ベース部材とカバー部材とで、水平に架設されている足場板支持用鋼管を挟み込み、クランプ用ボルトナットでベース部材の遊端部とカバー部材の遊端部とを互いに締結するのであるが、このとき、前記係止片の傾斜下側縁の全域が、金属製足場板の補強用側板部における垂直側板部と垂直立ち上がり板部との間の水平板部上に当接するように、クランプを足場板支持用鋼管の周りに回転させた状態で、クランプ用ボルトナットによる締結作業を行う。この結果、前記係止片の傾斜下側縁と足場板支持用鋼管との間で、金属製足場板の補強用側板部における水平板部を、前記係止片の傾斜下側縁の全域が前記水平板部上に当接する状態で、挟持固定することが出来る。 According to the configuration of the present invention, the mounting bolt and nut is positioned directly below the back surface of the metal scaffolding plate having the structure described above, and the clamp is inserted inside the metal scaffolding plate. The locking piece having the inclined lower side edge is made to enter the inside of the reinforcing side plate portion of the metal scaffold plate. In this state, the cover member of the clamp is moved upward, the steel plate for supporting the scaffolding plate installed horizontally is sandwiched between the base member and the cover member, and the free end portion of the base member and the cover member The free end portions are fastened to each other. At this time, the entire area of the inclined lower edge of the locking piece is between the vertical side plate portion and the vertical rising plate portion in the reinforcing side plate portion of the metal scaffolding plate. The clamp is tightened with a bolt and nut in a state where the clamp is rotated around the steel plate for supporting the scaffold plate so as to come into contact with the horizontal plate portion. As a result, the horizontal plate portion in the reinforcing side plate portion of the metal scaffolding plate is located between the inclined lower edge of the locking piece and the steel plate for supporting the scaffold plate, and the entire area of the inclined lower edge of the locking piece is It can be clamped and fixed in a state where it abuts on the horizontal plate portion.

上記のようにクランプを、足場板支持用鋼管の所定位置に所定向きで、クランプ用ボルトナットにより締結させるだけの比較的簡単で迅速に行える操作により、金属製足場板を足場板支持用鋼管に強固に固定することが出来る。しかも金属製足場板側には特別な加工も不要である。勿論、金属製足場板の外側に何も突出させないで済むので、安全性も確保出来る。 As described above, the metal scaffolding plate can be turned into the steel plate for supporting the scaffolding plate by a relatively simple and quick operation by simply fastening the clamp to the predetermined position of the steel plate for supporting the scaffolding plate with the bolts and nuts for clamping. It can be firmly fixed. Moreover, no special processing is required on the metal scaffolding plate side. Of course, it is not necessary to project anything outside the metal scaffolding plate, so safety can be ensured.

更に、上記本発明の構成によれば、前記係止片が、前記足場板支持用鋼管の軸心方向から見た側面視において、前記取付け用ボルトナットの軸心に対して当該係止片の巾の中心が、前記クランプ用ボルトナットのある側に偏る位置にあると共に、当該係止片の下側縁は、前記取付け板部の表面からの高さが、前記クランプ用ボルトナットのある側が高くなる向きに傾斜した構成になっているので、上記のように足場板支持用鋼管上に金属製足場板を固定したとき、前記足場板支持用鋼管の軸心方向から見た側面視において、前記取付け用ボルトナットが自動的に一定角度傾斜することになり、この取付け用ボルトナットが垂直姿勢になる場合と比較して、金属製足場板の補強用側板部の高さが低くとも、前記取付け用ボルトナットの上端（ボルトの遊端）が金属製足場板の裏面に干渉する恐れを回避出来る。又、係止片をクランプへ取り付けるための取付け板部には、係止片の巾に影響されずに十分な巾を持たせて、大径の取付け用ボルトナットと、突起と孔とによる回り止め構造の適用を可能にし、溶接などを利用せずに、強固に係止片をクランプに取り付けることが出来る。しかも係止片の巾は、前記取付け板部の巾に影響されずに必要最小限の巾に狭めることが出来るので、金属製足場板に対して足場板支持用鋼管が平面視で傾斜するような状況でも、金属製足場板の補強用側板部における水平板部の巾内に係止片の全域を確実に嵌合させて、所期の締結効果を確実に得ることが出来る。 Furthermore, according to the configuration of the present invention described above, the locking piece is arranged with respect to the shaft center of the mounting bolt nut in the side view seen from the axial direction of the steel plate for supporting the scaffold plate. The center of the width is at a position that is biased toward the side where the clamping bolt nut is located, and the lower edge of the locking piece is such that the height from the surface of the mounting plate portion is the side where the clamping bolt nut is located. Since it is configured to be inclined in a higher direction, when a metal scaffolding plate is fixed on the scaffolding plate supporting steel pipe as described above, in the side view seen from the axial direction of the scaffolding plate supporting steel pipe, The mounting bolt and nut automatically inclines at a constant angle, even when the height of the reinforcing side plate portion of the metal scaffolding plate is low compared to the case where the mounting bolt and nut is in a vertical posture. The top end of the bolt The capital of the free end) interferes fear can be avoided on the back surface of the metal scaffolding plate. In addition, the mounting plate for mounting the locking piece to the clamp should have a sufficient width without being affected by the width of the locking piece, and be rotated by a large-diameter mounting bolt nut, projection and hole. The stopper structure can be applied, and the locking piece can be firmly attached to the clamp without using welding or the like. Moreover, since the width of the locking piece can be reduced to the minimum necessary width without being affected by the width of the mounting plate portion, the steel plate for supporting the scaffold plate is inclined in plan view with respect to the metal scaffold plate. Even in such a situation, it is possible to reliably fit the entire area of the locking piece within the width of the horizontal plate portion of the reinforcing side plate portion of the metal scaffolding plate, thereby reliably obtaining the desired fastening effect.

上記本発明を実施する場合、前記延出板部(20a)は、前記取付け板部(19)から片側にのみ連設して、１つの係止片(21a)を備えた構造としても良いが、前記延出板部(20a,20b)を前記取付け板部(19)の両側に連設し、この両側の延出板部(20a,20b)の遊端からそれぞれ前記係止片(21a,21b)を折曲連設するのが望ましい。なぜならば、この構成によれば、金具全体が左右対称形になり、金具の向きを反転させなくとも、金属製足場板の右側辺側の補強用側板部を足場板支持用鋼管に取り付けるときは、金具の右側に突出している係止片を利用し、金属製足場板の左側辺側の補強用側板部を足場板支持用鋼管に取り付けるときは、金具の左側に突出している係止片を利用することが出来、作業性が向上する。 When carrying out the present invention, the extension plate portion (20a) may be connected to only one side from the mounting plate portion (19), and may have a structure including one locking piece (21a). The extending plate portions (20a, 20b) are continuously provided on both sides of the mounting plate portion (19), and the locking pieces (21a, 20b) are respectively provided from the free ends of the extending plate portions (20a, 20b) on both sides. It is desirable to connect 21b). Because, according to this configuration, the entire bracket is symmetrical, and the side plate for reinforcement on the right side of the metal scaffolding plate is attached to the steel plate for supporting the scaffolding plate without reversing the orientation of the bracket. When using the locking piece protruding to the right side of the metal fitting and attaching the reinforcing side plate on the left side of the metal scaffolding plate to the steel plate for supporting the scaffolding plate, use the locking piece protruding to the left side of the metal fitting. It can be used and workability is improved.

図１Ａは、本発明に係る金属製足場板の固定金具の使用状態を示す一部縦断側面図、図１Ｂは、図１ＡのＢ矢視部の拡大図である。FIG. 1A is a partially longitudinal side view showing a usage state of a metal scaffolding fixing metal fitting according to the present invention, and FIG. 1B is an enlarged view of a portion indicated by an arrow B in FIG. 1A. 図２は、本発明に係る金属製足場板の固定金具の使用状態を示す底面図である。FIG. 2 is a bottom view showing a usage state of the metal bracket fixing bracket according to the present invention. 図３Ａは、図１ＡのＸーＸ線拡大断面図、図３Ｂは、図３ＡのＹーＹ線断面図である。3A is an enlarged sectional view taken along line XX in FIG. 1A, and FIG. 3B is a sectional view taken along line YY in FIG. 3A. 図４Ａは、本発明に係る金属製足場板の固定金具の平面図、図４Ｂは図４ＡのＺーＺ線断面図である。FIG. 4A is a plan view of a metal bracket fixing bracket according to the present invention, and FIG. 4B is a cross-sectional view taken along the line ZZ in FIG. 4A. 図５Ａは、本発明に係る金属製足場板の固定金具の第一変形例を示す平面図、図５Ｂは、本発明に係る金属製足場板の固定金具の第二変形例を示す平面図である。5A is a plan view showing a first modified example of the metal scaffolding plate fixing bracket according to the present invention, and FIG. 5B is a plan view showing a second modified example of the metal scaffolding plate fixing bracket according to the present invention. is there.

図１Ａ〜図２において、１は金属製足場板の固定金具、２は金属製足場板、３は足場板支持用鋼管、４は垂直に立設された支柱用鋼管である。足場板支持用鋼管３は、１枚の金属製足場板２の少なくとも両端近傍２か所を支持出来る間隔で水平に配置されるもので、各足場板支持用鋼管３の両端部が支柱用鋼管４によって支持されている。この足場板支持用鋼管３と支柱用鋼管４とは、従来周知の２本の鋼管を交叉状態でクランプするパイプクランプ５によって互いに固定される。金属製足場板２は、表面帯状板部６の長さ方向に沿った左右両側辺から下側に補強用側板部７ａ，７ｂが連設された、従来周知のものである。補強用側板部７ａ，７ｂは、表面帯状板部６から折曲連設された垂直側板部８と、この垂直側板部８の下側辺から内側に折曲連設された水平板部９と、この水平板部９の内側辺から上向きに折曲連設された垂直立ち上がり板部１０とから成る溝形断面形状に構成されている。尚、図示の金属製足場板２には、左右両補強用側板部７ａ，７ｂ間の巾方向中央位置で表面帯状板部６の下側に、これら補強用側板部７ａ，７ｂと同一高さの中間補強部材１１が、金属製足場板２の長さ方向と平行に付設されている。この中間補強部材１１は、垂直板材１１ａの下側縁に水平帯状板１１ｂをＴ字形に溶接したものであるが、水平帯状板１１ｂに代えて、垂直板材１１ａの下側部に断面が三角形の筒状部を、当該垂直板材１１ａの曲げ加工により一体成形したものも知られている。 1A to 2, 1 is a metal bracket fixing bracket, 2 is a metal scaffolding plate, 3 is a steel plate for supporting a scaffolding plate, and 4 is a steel tube for a column that is erected vertically. The steel plate 3 for supporting a scaffold plate is horizontally arranged at an interval that can support at least two locations near both ends of a single metal scaffold plate 2, and both ends of each steel plate 3 for supporting a scaffold plate are steel tubes for columns. 4 is supported. The scaffold plate supporting steel pipe 3 and the support steel pipe 4 are fixed to each other by a pipe clamp 5 that clamps two conventionally known steel pipes in a crossed state. The metal scaffolding plate 2 is a well-known one in which reinforcing side plate portions 7a and 7b are continuously provided on the lower side from the left and right sides along the length direction of the surface belt-like plate portion 6. The reinforcing side plate portions 7a and 7b include a vertical side plate portion 8 bent continuously from the surface belt-like plate portion 6, and a horizontal plate portion 9 bent continuously from the lower side of the vertical side plate portion 8 to the inside. In addition, the horizontal plate portion 9 is configured to have a groove-shaped cross-sectional shape including a vertically rising plate portion 10 that is bent upward from the inner side of the horizontal plate portion 9. The illustrated metal scaffolding plate 2 has the same height as the reinforcing side plate portions 7a and 7b on the lower side of the surface strip plate portion 6 at the center in the width direction between the left and right reinforcing side plate portions 7a and 7b. The intermediate reinforcing member 11 is attached in parallel with the length direction of the metal scaffolding plate 2. The intermediate reinforcing member 11 is formed by welding a horizontal strip 11b to the lower edge of the vertical plate 11a in a T shape. Instead of the horizontal strip 11b, the intermediate reinforcing member 11 has a triangular cross section at the lower side of the vertical plate 11a. Also known is a cylindrical part integrally formed by bending the vertical plate member 11a.

固定金具１は、図３Ａ〜図４Ｂに示すように、足場板支持用鋼管３に着脱自在に締結されるクランプ１２と、このクランプ１２に取り付けられた足場板係止板１３とから構成されている。前記クランプ１２は、連結支軸１４を介して互いに開閉自在に連結されたベース部材１５とカバー部材１６、及びベース部材１５の遊端部とカバー部材１６の遊端部とを互いに締結する係脱自在なクランプ用ボルトナット１７から構成されている。クランプ用ボルトナット１７は、ベース部材１５の遊端部に、連結支軸１４と平行な支軸１７ａにより揺動自在に取り付けられたボルト１７ｂと、このボルト１７ｂに螺嵌されたナット１７ｃから構成されたもので、前記ボルト１７ｂを、支軸１７ａの周りの揺動により、カバー部材１６の遊端二股部１６ｂに嵌入させた状態で、当該ボルト１７ｂの遊端部に螺嵌させたナット１７ｃを捻じ込むことにより、ベース部材１５に対してカバー部材１６を連結支軸１４の周りに閉動させて、ベース部材１５の円弧形内周縁１５ａとカバー部材１６の円弧形内周縁１６ａとの間で、足場板支持用鋼管３を締結することが出来る。 As shown in FIGS. 3A to 4B, the fixing bracket 1 includes a clamp 12 that is detachably fastened to the scaffolding plate supporting steel pipe 3, and a scaffolding plate locking plate 13 attached to the clamp 12. Yes. The clamp 12 engages and disengages the base member 15 and the cover member 16 that are connected to each other via the connecting support shaft 14 so as to be openable and closable. It is composed of a flexible clamping bolt and nut 17. The clamp bolt nut 17 includes a bolt 17b that is swingably attached to a free end portion of the base member 15 by a support shaft 17a parallel to the connection support shaft 14, and a nut 17c that is screwed to the bolt 17b. The nut 17c is screwed into the free end portion of the bolt 17b while the bolt 17b is fitted into the free end bifurcated portion 16b of the cover member 16 by swinging around the support shaft 17a. , The cover member 16 is closed around the connecting support shaft 14 with respect to the base member 15, and the arc-shaped inner peripheral edge 15 a of the base member 15 and the arc-shaped inner peripheral edge 16 a of the cover member 16 are The steel plate 3 for supporting scaffolding plates can be fastened between the two.

足場板係止板１３は、クランプ１２のベース部材１５における平坦底板部１５ｂの外側に１つの取付け用ボルトナット１８によって取り付けられる取付け板部１９と、この取付け板部１９から左右両側に延出する左右一対の延出板部２０ａ，２０ｂ、及び各延出板部２０ａ，２０ｂの遊端からクランプ１２のある内側に向けて直角に折曲連設された左右一対の係止片２１ａ，２１ｂから構成されている。この足場板係止板１３は、図４Ａに示すように、左右一対の係止片２１ａ，２１ｂの一側辺どうしを結ぶ直線状側辺１３ａに対し、反対側の中央部領域の側辺１３ｂが出っ張って、両側辺１３ａ，１３ｂ間に巾広の取付け板部１９を形成すると共に、側辺１３ｂの両端から各係止片２１ａ，２１ｂの他側辺に至る傾斜側辺１３ｃ，１３ｄと直線状側辺１３ａとの間に、取付け板部１９の左右両側から延出する、係止片２１ａ，２１ｂ側ほど巾が狭まった延出板部２０ａ，２０ｂが形成されている。従って、係止片２１ａ，２１ｂの巾は、取付け板部１９の巾より十分に狭められている。 The scaffolding plate locking plate 13 is attached to the outer side of the flat bottom plate portion 15 b of the base member 15 of the clamp 12 by one mounting bolt nut 18 and extends from the mounting plate portion 19 to the left and right sides. From the pair of left and right extending plate portions 20a and 20b and the pair of left and right engaging pieces 21a and 21b that are bent at right angles from the free ends of the extending plate portions 20a and 20b toward the inside where the clamp 12 is located. It is configured. As shown in FIG. 4A, the scaffold plate locking plate 13 is formed on the side 13b of the central region on the opposite side with respect to the linear side 13a that connects one side of the pair of left and right locking pieces 21a and 21b. Bulges to form a wide mounting plate 19 between both sides 13a and 13b, and straight lines with inclined side sides 13c and 13d extending from both ends of the side 13b to the other sides of the locking pieces 21a and 21b. Extending plate portions 20a and 20b extending from the left and right sides of the mounting plate portion 19 and having a narrower width toward the locking pieces 21a and 21b are formed between the mounting side portion 13a. Therefore, the width of the locking pieces 21 a and 21 b is sufficiently narrower than the width of the mounting plate portion 19.

前記取付け用ボルトナット１８のボルト１８ａは、ベース部材１５の平坦底板部１５ｂの内側から、当該平坦底板部１５ｂと、その外側に重なる足場板係止板１３の取付け板部１９を貫通し、取付け板部１９から突出するボルト１８ａにナット１８ｂが螺嵌している。足場板係止板１３がボルト１８ａの周りで回転するのを阻止するために、ベース部材１５の平坦底板部１５ｂに２つの回り止め用突起２２ａ，２２ｂがプレス加工により突設され、足場板係止板１３の取付け板部１９には、回り止め用突起２２ａ，２２ｂが嵌合する孔２３ａ，２３ｂが設けられている。図では、これら孔２３ａ，２３ｂは、取付け板部１９を貫通する貫通孔としているが、貫通しない凹入孔であっても良い。又、回り止め用突起２２ａ，２２ｂを取付け板部１９に設け、ベース部材１５の平坦底板部１５ｂに孔２３ａ，２３ｂを設けても良い。 The bolt 18a of the mounting bolt nut 18 passes from the inside of the flat bottom plate portion 15b of the base member 15 through the flat bottom plate portion 15b and the mounting plate portion 19 of the scaffolding plate locking plate 13 that overlaps the outside of the flat bottom plate portion 15b. A nut 18 b is screwed into a bolt 18 a protruding from the plate portion 19. In order to prevent the scaffolding plate locking plate 13 from rotating around the bolt 18a, two anti-rotation projections 22a and 22b are projected on the flat bottom plate portion 15b of the base member 15 by pressing, and the scaffolding plate engagement The attachment plate portion 19 of the stop plate 13 is provided with holes 23a and 23b into which the rotation preventing projections 22a and 22b are fitted. In the figure, these holes 23a and 23b are through holes that penetrate the attachment plate portion 19, but may be recessed holes that do not penetrate. Further, the rotation preventing projections 22 a and 22 b may be provided in the mounting plate portion 19, and the holes 23 a and 23 b may be provided in the flat bottom plate portion 15 b of the base member 15.

ベース部材１５の平坦底板部１５ｂにおけるボルト１８ａの貫通位置は、当該平坦底板部１５ｂの巾の中央を通る長さ方向に沿った中心線上で且つ、当該平坦底板部１５ｂの長さ方向の中央位置よりも、クランプ用ボルトナット１７のボルト１７ｂを軸支する支軸１７ａに近い位置にある。そして２つの回り止め用突起２２ａ，２２ｂは、ボルト１８ａの貫通位置に対し前記支軸１７ａのある側とは反対側で、前記中心線に対し左右対称に設けられている。従って、足場板係止板１３の取付け板部１９においては、ボルト１８ａの貫通位置は、当該取付け板部１９の中心位置よりも直線状側辺１３ａに近い位置にあり、２つの孔２３ａ，２３ｂは、当該取付け板部１９の中心位置よりも中央部領域の側辺１３ｂに近い位置に設けられている。上記構成によれば、クランプ１２が把持する足場板支持用鋼管３の軸心方向から固定金具１を見たとき、図３Ａに示すように、取付け用ボルトナット１８のボルト１８ａの軸心は、足場板支持用鋼管３の中心近くを通り、係止片２１ａ，２１ｂは、その巾の中央位置が、ボルト１８ａの軸心よりもクランプ１２のクランプ用ボルトナット１７のある側に偏った位置にある。そして係止片２１ａ，２１ｂの下側縁２４は、取付け板部１９の表面からの折曲高さが、クランプ１２のクランプ用ボルトナット１７のある側ほど高くなるように、傾斜している。 The penetration position of the bolt 18a in the flat bottom plate portion 15b of the base member 15 is on the center line along the length direction passing through the center of the width of the flat bottom plate portion 15b and the central position in the length direction of the flat bottom plate portion 15b. Rather than the support shaft 17a that supports the bolt 17b of the clamp bolt nut 17. The two anti-rotation protrusions 22a and 22b are provided symmetrically with respect to the center line on the side opposite to the side where the support shaft 17a is located with respect to the penetrating position of the bolt 18a. Therefore, in the mounting plate portion 19 of the scaffold plate locking plate 13, the penetrating position of the bolt 18a is closer to the linear side 13a than the center position of the mounting plate portion 19, and the two holes 23a, 23b Is provided at a position closer to the side 13 b of the central region than the central position of the mounting plate 19. According to the above configuration, when the fixing bracket 1 is viewed from the axial direction of the scaffolding plate supporting steel pipe 3 held by the clamp 12, as shown in FIG. 3A, the axial center of the bolt 18a of the mounting bolt nut 18 is Passing near the center of the steel plate 3 for supporting the scaffolding plate, the locking pieces 21a and 21b are positioned so that the center position of the width is biased to the side where the clamp bolt nut 17 of the clamp 12 is located with respect to the axis of the bolt 18a. is there. The lower edges 24 of the locking pieces 21a and 21b are inclined so that the bending height from the surface of the mounting plate portion 19 becomes higher toward the side where the clamp bolt nut 17 of the clamp 12 is located.

図１Ａ〜図３Ｂに示すように、足場板支持用鋼管３上に載置された金属製足場板２を、固定金具１により足場板支持用鋼管３に固定する場合、クランプ１２のクランプ用ボルトナット１７のボルト１７ｂをカバー部材１６の遊端二股部１６ｂから外して、ベース部材１５に対しカバー部材１６を連結支軸１４の周りに開いた状態で、ベース部材１５を、金属製足場板２の下側で足場板支持用鋼管３上に被さる状態にする。この状態で当該固定金具１を、金属製足場板２の片側の補強用側板部７ａ／７ｂのある側へ、足場板支持用鋼管３に沿って移動させながら、当該補強用側板部７ａ／７ｂ側にある係止片２１ａ／２１ｂを、補強用側板部７ａ／７ｂの垂直立ち上がり板部１０を乗り越えさせ、当該係止片２１ａ／２１ｂを、補強用側板部７ａ／７ｂの水平板部９の上に載置させる。この後、足場板支持用鋼管３の下側に垂れ下がっているカバー部材１６を持ち上げて、ベース部材１５との間で足場板支持用鋼管３を挟む状態にし、クランプ用ボルトナット１７のボルト１７ｂをカバー部材１６の遊端二股部１６ｂに嵌合させ、当該遊端二股部１６ｂの外側でボルト１７ｂに螺嵌しているナット１７ｃを締め付け、カバー部材１６を、連結支軸１４の周りでベース部材１５の側へ閉動させる。 As shown in FIGS. 1A to 3B, when the metal scaffolding plate 2 placed on the scaffolding plate supporting steel pipe 3 is fixed to the scaffolding plate supporting steel tube 3 by the fixing bracket 1, the clamping bolt of the clamp 12 With the bolt 17 b of the nut 17 removed from the free end bifurcated portion 16 b of the cover member 16 and the cover member 16 opened around the connection support shaft 14 with respect to the base member 15, the base member 15 is moved to the metal scaffolding plate 2. It is made the state which covers on the steel pipe 3 for scaffold board support on the lower side. In this state, while the fixing bracket 1 is moved along the scaffolding plate supporting steel pipe 3 to the side where the reinforcing side plate 7a / 7b on one side of the metal scaffolding plate 2 is located, the reinforcing side plate 7a / 7b. The locking piece 21a / 21b on the side is moved over the vertical rising plate part 10 of the reinforcing side plate part 7a / 7b, and the locking piece 21a / 21b is connected to the horizontal plate part 9 of the reinforcing side plate part 7a / 7b. Place on top. Thereafter, the cover member 16 hanging down from the bottom of the scaffolding plate supporting steel pipe 3 is lifted so that the scaffolding plate supporting steel pipe 3 is sandwiched between the base member 15 and the bolt 17b of the clamping bolt nut 17 is attached. The cover member 16 is fitted to the free end bifurcated portion 16 b, the nut 17 c screwed to the bolt 17 b is tightened outside the free end bifurcated portion 16 b, and the cover member 16 is moved around the connecting support shaft 14 to the base member Close to 15 side.

上記のようにして、クランプ１２のベース部材１５の円弧形内周縁１５ａと、カバー部材１６の円弧形内周縁１６ａとの間で、足場板支持用鋼管３を挟持させるのであるが、このとき、クランプ１２を足場板支持用鋼管３の周りに少し回転させて、図３Ａに示すように、係止片２１ａ／２１ｂの傾斜下側縁２４の全域を、補強用側板部７ａ／７ｂの水平板部９の上に当接載置させる。この状態でクランプ用ボルトナット１７のナット１７ｃを完全に締め付けて、クランプ１２を足場板支持用鋼管３に固定することにより、係止片２１ａ／２１ｂの傾斜下側縁２４の全域が、金属製足場板２の補強用側板部７ａ／７ｂにおける水平板部９の内側底面に当接した状態で、当該係止片２１ａ／２１ｂと足場板支持用鋼管３との間で、金属製足場板２の補強用側板部７ａ／７ｂにおける水平板部９を挟持固定することになる。尚、このとき、足場板係止板１３の取付け板部１９と係止片２１ａ／２１ｂとの間の延出板部２０ａ／２０ｂが少し上方に撓むように、両係止片２１ａ，２１ｂの傾斜下側縁２４の高さを設定しておくのが望ましい。 As described above, the scaffolding plate supporting steel pipe 3 is sandwiched between the arc-shaped inner peripheral edge 15a of the base member 15 of the clamp 12 and the arc-shaped inner peripheral edge 16a of the cover member 16. When the clamp 12 is slightly rotated around the steel plate 3 for supporting the scaffold plate, as shown in FIG. 3A, the entire region of the inclined lower side edge 24 of the locking piece 21a / 21b is formed on the reinforcing side plate portion 7a / 7b. It is placed in contact with the horizontal plate portion 9. In this state, the nut 17c of the clamp bolt nut 17 is completely tightened, and the clamp 12 is fixed to the scaffolding plate supporting steel pipe 3, so that the entire area of the inclined lower edge 24 of the locking piece 21a / 21b is made of metal. The metal scaffolding plate 2 between the locking piece 21a / 21b and the steel plate 3 for supporting the scaffolding plate in a state in contact with the inner bottom surface of the horizontal plate 9 in the reinforcing side plate 7a / 7b of the scaffolding plate 2. The horizontal plate portion 9 in the reinforcing side plate portions 7a / 7b is sandwiched and fixed. At this time, both the locking pieces 21a and 21b are inclined so that the extension plate 20a / 20b between the mounting plate 19 of the scaffolding plate locking plate 13 and the locking pieces 21a / 21b bends slightly upward. It is desirable to set the height of the lower edge 24 in advance.

上記のように、足場板支持用鋼管３上に載置された金属製足場板２を、固定金具１により足場板支持用鋼管３に固定した状態を、足場板支持用鋼管３の軸心方向から見たとき、図３Ａに示すように、係止片２１ａ／２１ｂの傾斜下側縁２４の全域が、金属製足場板２の補強用側板部７ａ／７ｂにおける水平板部９の表面に当接しているため、クランプ１２のベース部材１５における平坦底板部１５ｂと、足場板係止板１３の取付け板部１９が、金属製足場板２の長さ方向に対し傾斜し、これに伴って、取付け用ボルトナット１８のボルト１８ａが傾斜することになる。この結果、取付け用ボルトナット１８のナット１８ｂから多少なりとも上方に突出することになるボルト１８ａの上端の、金属製足場板２の補強用側板部７ａ／７ｂにおける水平板部９の内側底面からの高さが低くなり、金属製足場板２の補強用側板部７ａ，７ｂの高さが比較的低い金属製足場板２に対して固定金具１を使用する場合でも、ボルト１８ａの上端が表面帯状板部６の底面に圧接したり、食い込むような状況になるのを回避出来る。 As described above, the state in which the metal scaffolding plate 2 placed on the scaffolding plate supporting steel pipe 3 is fixed to the scaffolding plate supporting steel pipe 3 by the fixing bracket 1 is the axial direction of the scaffolding plate supporting steel pipe 3. As shown in FIG. 3A, the entire area of the inclined lower edge 24 of the locking piece 21a / 21b contacts the surface of the horizontal plate portion 9 in the reinforcing side plate portion 7a / 7b of the metal scaffolding plate 2. Because of the contact, the flat bottom plate portion 15b of the base member 15 of the clamp 12 and the mounting plate portion 19 of the scaffold plate locking plate 13 are inclined with respect to the length direction of the metal scaffold plate 2, and accordingly, The bolt 18a of the mounting bolt nut 18 is inclined. As a result, from the inner bottom surface of the horizontal plate portion 9 of the reinforcing side plate portion 7a / 7b of the metal scaffolding plate 2 at the upper end of the bolt 18a that protrudes somewhat upward from the nut 18b of the mounting bolt nut 18. Even when the fixing bracket 1 is used for the metal scaffolding plate 2 whose height of the side plate portions 7a and 7b for reinforcement of the metal scaffolding plate 2 is relatively low, the upper end of the bolt 18a is the surface. It is possible to avoid a situation where the bottom surface of the belt-like plate portion 6 is pressed against or bites in.

金属製足場板２の片側の補強用側板部７ａ／７ｂを足場板支持用鋼管３に固定金具１で固定する場合の手順を説明したが、両側の補強用側板部７ａ，７ｂの何れもを足場板支持用鋼管３に固定金具１で固定するのが望ましい。この場合、図１Ａ及び図２に示すように、同一の足場板支持用鋼管３に対して、金属製足場板２の左右両側の補強用側板部７ａ，７ｂを固定金具１で固定しても良いし、左右両側の補強用側板部７ａ，７ｂを異なる足場板支持用鋼管３に固定金具１で固定しても良い。何れの場合も、固定金具１には、左右両側に係止片２１ａ，２１ｂを左右対称に備えているので、固定金具１の向きを反転させなくとも、左右何れの補強用側板部７ａ，７ｂに対しても係止片２１ａ／２１ｂを係合させて固定させることが出来る。更に、足場板係止板１３の取付け板部１９には、ベース部材１５の平坦底板部１５ｂに対する取付け及び回り止めのために十分な巾（面積）を確保しながら、係止片２１ａ，２１ｂの巾は十分に狭めているので、図２の下半に示すように、金属製足場板２を支持する足場板支持用鋼管３が、当該金属製足場板２の長さ方向に対して傾斜しているような状況においても、係止片２１ａ，２１ｂを平面視において斜めの状態のまま、補強用側板部７ａ，７ｂの垂直側板部８と垂直立ち上がり板部１０との間で水平板部９上に載置させることが出来る。 The procedure for fixing the reinforcing side plate portion 7a / 7b on one side of the metal scaffolding plate 2 to the scaffolding plate supporting steel pipe 3 with the fixing bracket 1 has been described. However, both of the reinforcing side plate portions 7a, 7b on both sides are fixed. It is desirable to fix to the scaffolding plate supporting steel pipe 3 with the fixing bracket 1. In this case, as shown in FIGS. 1A and 2, the reinforcing side plate portions 7 a and 7 b on both the left and right sides of the metal scaffold plate 2 are fixed to the same scaffold plate supporting steel pipe 3 with the fixing bracket 1. Alternatively, the reinforcing side plate portions 7a and 7b on the left and right sides may be fixed to the different scaffold plate supporting steel pipes 3 by the fixing bracket 1. In any case, since the fixing bracket 1 is provided with the locking pieces 21a and 21b symmetrically on both the left and right sides, the left and right reinforcing side plate portions 7a and 7b can be provided without reversing the direction of the fixing bracket 1. Also, the locking pieces 21a / 21b can be engaged with each other and fixed. Further, the mounting plate portion 19 of the scaffolding plate locking plate 13 has a sufficient width (area) for mounting the base member 15 to the flat bottom plate portion 15b and preventing the rotation of the base member 15 while securing the locking pieces 21a and 21b. Since the width is sufficiently narrow, as shown in the lower half of FIG. 2, the steel plate 3 for supporting the scaffolding plate 2 that supports the metallic scaffolding plate 2 is inclined with respect to the length direction of the metallic scaffolding plate 2. Even in such a situation, the horizontal plate portion 9 is interposed between the vertical side plate portion 8 and the vertical rising plate portion 10 of the reinforcing side plate portions 7a and 7b with the locking pieces 21a and 21b being in an oblique state in plan view. Can be placed on top.

尚、図５Ａに示すように、足場板係止板１３の延出板部２０ａ，２０ｂは、係止片２１ａ，２１ｂの巾と同一巾の帯板状に形成することも出来る。又、図５Ｂに示すように、足場板係止板１３は、取付け板部１９の片側にのみ、先端に係止片２１aを備えた延出板部２０ａが連設されたものであっても良い。 As shown in FIG. 5A, the extension plate portions 20a and 20b of the scaffold plate locking plate 13 can be formed in a strip shape having the same width as the locking pieces 21a and 21b. Further, as shown in FIG. 5B, the scaffold plate locking plate 13 may be one in which an extension plate portion 20 a having a locking piece 21 a at the tip is continuously provided only on one side of the mounting plate portion 19. good.

本発明の金属製足場板の固定金具は、建設現場において、断面が溝形の底部を有する補強用側板部を左右両側辺に備えている金属製の足場板を、水平に架設された足場板支持用鋼管の上に、簡単に且つ強固に固定出来る金具として活用出来る。 The metal scaffolding plate fixing bracket of the present invention is a scaffolding plate in which a metal scaffolding plate having reinforcing side plates on both the left and right sides at the construction site is provided horizontally on the left and right sides. It can be used as a metal fitting that can be easily and firmly fixed on a supporting steel pipe.

１固定金具
２金属製足場板
３足場板支持用鋼管
４支柱用鋼管
５パイプクランプ
６金属製足場板の表面帯状板部
７ａ，７ｂ金属製足場板の補強用側板部
８補強用側板部の垂直側板部
９補強用側板部の水平板部
１０補強用側板部の垂直立ち上がり板部
１１中間補強部材
１２クランプ
１３足場板係止板
１４連結支軸
１５ベース部材
１５ａ，１６ａ円弧形内周縁
１５ｂ平坦底板部
１６カバー部材
１６ｂ遊端二股部
１７クランプ用ボルトナット
１８取付け用ボルトナット
１９取付け板部
２０ａ，２０ｂ延出板部
２１ａ，２１ｂ係止片
２２ａ，２２ｂ回り止め用突起
２３ａ，２３ｂ回り止め用孔
２４傾斜下側縁
DESCRIPTION OF SYMBOLS 1 Fixing bracket 2 Metal scaffolding board 3 Steel pipe for supporting scaffolding board 4 Steel pipe for support 5 Pipe clamp 6 Surface band-like board part of metal scaffolding board 7a, 7b Side plate part for reinforcement of metal scaffolding board 8 Vertical of side plate for reinforcement Side plate portion 9 Horizontal plate portion of reinforcing side plate portion 10 Vertical rising plate portion of reinforcing side plate portion 11 Intermediate reinforcing member 12 Clamp 13 Scaffold plate locking plate 14 Connecting support shaft 15 Base member 15a, 16a Arc-shaped inner peripheral edge 15b Flat Bottom plate portion 16 Cover member 16b Free end bifurcated portion 17 Clamping bolt nut 18 Mounting bolt nut 19 Mounting plate portion 20a, 20b Extension plate portion 21a, 21b Locking piece 22a, 22b Anti-rotation projection 23a, 23b For anti-rotation Hole 24 Inclined lower edge

Claims

水平に架設された足場板支持用鋼管の上に載置された金属製足場板を前記足場板支持用鋼管に固定する金具であって、前記足場板支持用鋼管に着脱自在に締結されるクランプと、このクランプに取り付けられた足場板係止板とから成り、前記クランプは、連結支軸を介して互いに開閉自在に連結されたベース部材とカバー部材、及びベース部材の遊端部とカバー部材の遊端部とを互いに締結する係脱自在なクランプ用ボルトナットから成り、前記足場板係止板は、前記ベース部材の平坦底板部の外側に、１本の取付け用ボルトナットで取り付けられた取付け板部と、この取付け板部から一体に連設された係止片から成り、前記取付け用ボルトナットは、前記取付け板部の外側にナットが位置する向きに配置され、前記平坦底板部と前記足場板係止板の取付け板部には、互いに嵌合して前記取付け用ボルトナットの周りの相対回転を阻止する回り止め用突起と孔が設けられ、前記取付け板部には、前記クランプのベース部材の外側へ、前記足場板支持用鋼管の長さ方向に延出する延出板部が連設され、この延出板部は、その遊端の巾が前記取付け板部の巾よりも狭められ、前記係止片は、前記延出板部の遊端から、前記足場板支持用鋼管のある側に折曲され、この係止片は、前記延出板部の遊端から、前記足場板支持用鋼管のある側に折曲形成され、この係止片の下側縁は、前記取付け板部の表面に対して傾斜している、金属製足場板の固定金具。 A clamp for fixing a metal scaffolding plate mounted on a horizontally installed scaffolding plate supporting steel pipe to the scaffolding plate supporting steel pipe, the clamp being detachably fastened to the scaffolding plate supporting steel pipe And a base plate and a cover member connected to each other via a connecting support shaft, and a free end portion and a cover member of the base member. The scaffolding plate locking plate is attached to the outer side of the flat bottom plate portion of the base member with a single mounting bolt nut. The mounting plate portion includes a locking piece integrally connected from the mounting plate portion, and the mounting bolt nut is disposed in a direction in which the nut is positioned outside the mounting plate portion, and the flat bottom plate portion The scaffold plate The mounting plate portion of the stop plate is provided with a rotation-preventing projection and a hole that are fitted together to prevent relative rotation around the mounting bolt and nut, and the mounting plate portion includes a base member of the clamp. To the outside, an extension plate portion extending in the length direction of the steel plate for supporting the scaffold plate is continuously provided, and the extension plate portion has a free end width narrower than a width of the mounting plate portion, The locking piece is bent from the free end of the extension plate portion to the side where the steel plate for supporting the scaffold plate is located, and the locking piece is supported from the free end of the extension plate portion to the scaffold plate support. The metal scaffolding plate fixing bracket, which is bent on the side where the steel pipe is provided, and the lower edge of the locking piece is inclined with respect to the surface of the mounting plate portion.

前記延出板部は、前記取付け板部から両側に連設され、この両側の延出板部の遊端からそれぞれ前記係止片が折曲連設されている、請求項１に記載の金属製足場板の固定金具。 2. The metal according to claim 1, wherein the extension plate portion is provided on both sides of the mounting plate portion, and the locking pieces are bent and connected from the free ends of the extension plate portions on both sides. Fixing bracket for scaffolding board.