JP6148486B2 - Scaffolding equipment - Google Patents

Description

  The present invention relates to a scaffold device, and more particularly, to an improvement in a scaffold device that is suitable for providing a working scaffold projecting above a side and outside of a structure such as a bridge and communicating with the top of the structure.

  For example, Patent Document 1 discloses a proposal for providing a working scaffold that projects above a side and outside of a structure such as a bridge and communicates with the top of the structure. And an arm member that is detachably provided.

  According to the proposal of this document disclosure, the arm members are arranged at the upper end of the structure in a direction crossing the axial direction of the structure, and are arranged in a plurality with appropriate intervals along the axial direction of the structure. The plurality of arm members enables the scaffolding plate to be stretched over the overhanging portion that projects to the upper side of the structure.

  In this proposal, a single pipe is erected on the projecting portion of the arm member, and a single pipe extending in the horizontal direction is connected to the standing single pipe to form a handrail made of vertical and horizontal single pipes. Let

  By the way, the arm member is formed of H-shaped steel, and is fixed to the opposite side portion of the overhanging portion, that is, the mounting portion arranged at the upper end of the structure, and to the upper end portion of the structure facing the stopper. A screw jack is provided, and the screw jack and the stopper are connected to the structure by sandwiching the upper end portion of the structure.

  Therefore, in the scaffold device disclosed in this document, starting from the connection of the mounting portion of the arm member to the structure, the scaffold plate is arranged on the overhanging portion of the arm member, and the upper side of the structure In addition, it is possible to provide a working scaffold that projects to the arm, and it is possible to provide a handrail to the so-called scaffold by connecting a single tube to the projecting portion of the arm member. By tracing, it is possible to remove the work scaffold projecting above the outside of the side of the structure.

JP 2001-49623 A

  However, in the proposal of the above-mentioned literature disclosure, it may be pointed out that the work for providing the work scaffold and the work for removing the work scaffold are time-consuming. In other words, when the work scaffold is provided, the following operations are performed according to conventional work procedures, even if the operation of connecting the arm member to the structure is inevitable.

  Specifically, for the scaffolding plate arranged on the overhanging portion of the arm member, it is necessary to bind the arm member to the arm member using a pre-prepared numbered wire, and to provide a handrail In addition, the operation of connecting the single tubes to the arm member and the operation of connecting the single tubes to each other are also performed using a clamp that is a dedicated connecting tool prepared in advance.

  When removing the work scaffold, the procedure reverse to the above is followed, that is, the operation of releasing the connection between the single tubes and the connection of the single tube to the arm member is required. In addition, it is necessary to cut the wire for separating the scaffold plate.

  In addition, when removing the work scaffold, it is necessary to collect and transfer the clamps and wires that have finished their functions, and also to collect and transfer the separated single pipe, and provide a work scaffold throughout. There is a problem that requires time and labor to remove the work and work scaffold.

  The present invention has been developed in view of the above-described circumstances, and the object of the present invention is to provide a scaffold device that can perform the work of providing a work scaffold and the work of removing the work scaffold as easily as possible. Is to provide.

In order to achieve the above object, one solution of the present invention includes an arm member detachably provided on a structure, a scaffold plate detachably provided on the arm member, and the scaffold plate or the arm member. And a handrail frame provided detachably on the
The scaffold plate includes a plate member, a cross member provided along the short direction on the back side of the plate member, and edge members connected to both ends of the cross member,
The arm member includes a mounting portion that is detachably connected to the upper end portion of the structure, and an overhang portion that continuously extends from the mounting portion and protrudes to the outside of the side of the structure.
A stopper body that contacts the upper end of the structure, and a gripping tool or a pusher that holds the upper end of the structure between the stopper body and the stopper body;
In the scaffold device provided with one fixing tool and the other fixing tool in which the overhanging part detachably fixes both sides of the scaffold plate ,
The one fastener and the other fastener are in contact with the upper end of the edge member of the scaffold plate and press the edge member downward, and the connector comprising a bolt for connecting the presser piece to the arm member And
The presser piece is constituted by a main body portion provided with a hook, a leg portion continuous with the main body portion, and a flange portion that is connected to the leg portion and is connected to the arm member via the connector.
The scaffold plate freely ligated detached the handrail frame to crosspiece member of, or is characterized in that it freely connected so detached the handrail frame to a socket which is fixed to the arm member.
Similarly, the other means includes an arm member detachably provided on the structure, a scaffold plate detachably provided on the arm member, and a handrail frame detachably provided on the scaffold plate or the arm member. ,
The scaffold plate includes a plate member, a cross member provided along the short direction on the back side of the plate member, and edge members connected to both ends of the cross member,
The arm member includes a mounting portion that is detachably connected to the upper end portion of the structure, and an overhang portion that continuously extends from the mounting portion and protrudes to the outside of the side of the structure.
A stopper body that contacts the upper end of the structure, and a gripping tool or a pusher that holds the upper end of the structure between the stopper body and the stopper body;
In the scaffold device provided with one fixing tool and the other fixing tool in which the overhanging part detachably fixes both sides of the scaffold plate,
The one fixing tool and the other fixing tool are respectively interposed in the arm member so as to be movable along the axial direction, and a presser piece that presses the edge member in contact with the upper end of the edge member of the scaffold plate. A slide body, and a coupling tool comprising a bolt for connecting the presser piece to the slide body and preventing movement of the slide body relative to the arm member,
The presser piece is configured as a main body portion provided with a hook, a leg portion continuous to the main body portion, and a flange portion that is connected to the leg portion and is connected to the slide body via the connector.
The handrail frame is detachably connected to the crosspiece member of the scaffold plate, or the handrail frame is detachably connected to a socket fixed to the arm member.

  Therefore, in the scaffold device according to the present invention, the arm member includes a stopper body and a gripping tool or a pressing tool facing the stopper body at the mounting portion. By sandwiching the upper end portion, the arm member can be coupled to the structure.

  In the scaffold device according to the present invention, since the arm member is provided with a fixture at the overhanging portion, the use of this fixture makes it possible to attach the scaffold plate to the arm member. Compared to the case where an annealed iron wire called a wire is prepared and the scaffold plate is tied to the arm member using this wire, the work of providing the scaffold plate on the arm member is simplified.

  Further, in the scaffold device according to the present invention, the scaffold plate detachably connects the handrail frame to the crosspiece member forming the scaffold plate, or the arm member is attached to the socket fixed to the arm member. Since a single pipe and a clamp are prepared as in the prior art, a single pipe is connected by a clamp, and a handrail is provided as compared with a case where a single pipe is connected to each other to form a handrail. Make work easier.

  Therefore, in the scaffold device according to the present invention, it is possible to provide a working scaffold that projects above the outside of the structure and communicates with the top of the structure, and a handrail is provided on the working scaffold. This makes it possible to ensure the safety of workers who use the work scaffolding.

  Furthermore, in the scaffold device of the present invention, by following the procedure reverse to the above procedure, that is, the handrail frame is removed from the scaffold plate, or the handrail frame is removed from the arm member, and the arm member By removing the scaffolding plate from the overhanging portion, it becomes possible to remove the work scaffold that communicates with the upper part of the structure from the structure, and the work scaffold removal work is simplified. Then, the scaffold member can be removed from the structure by removing the arm member from the upper end of the structure.

  Since the fixing member that allows the scaffold plate to be removed from the arm member is provided on the arm member, it is not necessary to collect and transfer only the fixing member. Further, the handrail frame is only separated from the scaffold plate or the arm member, and the handrail frame itself is not disassembled, so that it is not necessary to collect and transport the disassembled handrail member.

  As a result, according to the scaffold device of the present invention, the work scaffolding and the work of removing the work scaffold are simplified. On the other hand, according to the scaffold device of the present invention, since the members that form the work scaffold are roughly divided into the arm member, the scaffold plate, and the handrail frame, so-called reduction of the number of parts in stock and conveyance In addition, the so-called setup work for aligning the members forming the work scaffold is simplified.

It is a schematic perspective view which shows the state which provided the scaffold for work above the armpit and the outer side in the bridge which is a structure by the scaffold apparatus by one Embodiment of this invention. FIG. 2 is an enlarged partial plan view showing the work scaffold of FIG. 1 with a bridge partially broken away. It is a fragmentary sectional elevational view which shows the work scaffold of FIG. 1 with the upper end part in a bridge. It is a figure which shows a scaffold board, (A) is a top view which fractured | ruptured the center part, (B) is a front view which fractured | ruptured the center part, (C) is a bottom view which fractured | ruptured the center part, (D) is It is a left view (right view). It is a figure which shows one fixing tool, (A) is a front view, (B) is a top view, (C) is a right view. It is a figure which shows the other fixing tool, (A) is a front view, (B) is a top view, (C) is a left view. It is a figure which shows a handrail frame, (A) is a front view, (B) is a right view.

is there.
It is the elements on larger scale which show the connection state of a handrail frame and a scaffold board partly fractured | ruptured, (A) is a front view, (B) is a top view, (C) is the YY line in (A). It is a longitudinal cross-sectional view shown by a position. It is a figure which shows the hook piece which comprises the stopper means provided in the lower end part of the vertical member in a handrail frame, (A) is a front view, (B) is a left view, (C) is a right view, D) is a bottom view, and (E) is a front view of a stop piece. It is a figure which shows a misunderstanding prevention tool, (A) is a fragmentary sectional front view which shows the state which connected the adjacent scaffold board, (B) shows with a scaffold board in the Y1-Y1 line position in (A). (C) is a plan view of a main body constituting the misunderstanding prevention device, (D) is a side view of the main body, and (E) is a front view of a receiver constituting the misunderstanding prevention device, ( F) is a plan view of a stopper constituting the mistake prevention tool. It is a figure which shows a toe board connector, (A) is a fragmentary sectional front view shown with a scaffold board and a toe board, (B) is a top view of the lower receiving piece which comprises a toe board connector, (C), The right side view of the lower receiving piece, (D) is a plan view of the upper presser constituting the toe plate connector, (E) is the right side view of the upper presser, and (F) is the bottom of the upper presser. FIG. It is a schematic perspective view which shows the state which provided the scaffold for work above the armpit and the outer side in the bridge which is a structure with the scaffold apparatus by other embodiment of this invention. It is a fragmentary sectional elevational view which shows the work scaffold of FIG. 12 with the upper end part in a bridge. It is a partial expanded sectional front view which shows the stopper structure in an arm member. It is a partial expanded sectional front view shown with the arm member which fractured | ruptured the retaining means in an arm member. It is a figure which shows one fixing tool by other embodiment, (A) is a front view, (B) is a left view, (C) is a top view, (D) is a left view which shows a slide body. FIG. 5E is a front view showing the presser piece. It is a figure which shows the other fixing tool by other embodiment, (A) is a front view, (B) is a left view, (C) is a top view, (D) is a left view which shows a slide body. FIG. 5E is a front view showing the presser piece. It is a figure which shows a lifting prevention tool with a scaffold board and an arm member, (A) is a front view, (B) is a left view.

  Hereinafter, the present invention will be described based on the illustrated embodiments. A scaffold device according to an embodiment of the present invention is suitable for providing a temporary work scaffold S that protrudes to the upper side of the bridge B as a structure and communicates with the upper side of the bridge B as shown in FIG. .

  As shown in FIGS. 2 and 3, the scaffold device according to the present invention includes an arm member 1 that is detachably provided on a flange F that is an upper end portion of the bridge B, and the arm member 1 on the side and outside of the bridge B. A scaffolding plate 2 provided detachably on the overhanging portion 1a protruding upward, and a handrail frame 3 (see FIG. 1) detachably provided on the scaffolding plate 2 are provided.

  In the illustrated embodiment, a toe plate connector 5 (see FIGS. 1 and 11) for attaching the toe plate 4 (see FIGS. 1 and 11) to the scaffold plate 2 is detachably connected. That is, as shown in the figure, the scaffolding plate 2 is provided with a toe plate connector 5 that is detachably provided, and the toe plate 4 is detachably disposed to secure the scaffolding plate 2 in the working scaffold S embodied by the present invention. Improves sex.

  The following various members including the arm member 1, the scaffolding plate 2, the handrail frame 3, the toe plate 4, and the toe plate connector 5, that is, the constituent members of the scaffold device, are provided with a predetermined strength. Any material may be selected and formed. In the embodiment of the present invention, each constituent member is formed of an aluminum alloy or a synthetic resin, and the weight of each constituent member can be reduced. Consideration is given to reduce the burden on the manpower at the time of installation and removal of the scaffolding S, that is, the burden on the workers who transport the structural members as much as possible.

  To explain sequentially, the arm member 1 is formed as a round pipe and is disposed at the upper end of the bridge B in a direction crossing the axial direction of the bridge B, and extends over the outside of the bridge B. Part 1a and a mounting part 1b positioned on the opposite side of bridge B as an opposite side part of this overhanging part 1a, and on the side of mounting part 1b, that is, in the center in the axial direction of arm member 1 A stopper body 11 is provided at a position close to the portion, and a gripping tool 12 is provided at a base end portion (not shown) of the arm member 1.

  The arm member 1 is provided with one fixing tool 13 (see FIG. 5) on the overhanging portion 1a side, that is, at the distal end portion (not shown) of the arm member 1, and at the center of the arm member 1 in the axial direction. The other fixing tool 14 (refer to FIG. 6) is provided at the offset position.

  The arm member 1 is formed of a round pipe, and exhibits greater rigidity against external force action than a case where it is formed of a square pipe having the same wall thickness, and can be easily bent or crushed. I will not.

  Further, the arm member 1 is arranged in plural along the axial direction of the bridge B, and allows the placement of the scaffolding plate 2 (see FIG. 1). The arrangement interval of the arm members 1 at this time may be basically arbitrary, but it is preferable that this type of temporary object has a size that is used in many cases, for example, 0.3 m. Basic dimensions should be used. And when the two arm members 1 are arrange | positioned at the upper end of the bridge B as shown in figure, the space | interval with the adjacent arm member 1 is substantially from a viewpoint which enables construction of the scaffold board 2, for example. 3.6 meters or less.

  By the way, the stopper body 11 and the gripping tool 12 in the arm member 1 are provided in consideration of the fact that the thickness of the flange F in the bridge B may be so-called large or small. Specifically, in the case of the large-sized bridge B, the thickness of the flange F is, for example, almost tripled compared to the thickness of the flange in a small-sized bridge (not shown). Therefore, when using the scaffold device of the present invention, consideration is given so that the arm member 1 can be accurately connected to the bridge B even if the thickness of the flange is large or small.

  The stopper body 11 is suspended in a fixed state at a position near the center of the arm member 1 in the axial direction, and the gripping tool 12 is opposed to the axis of the arm member 1 at the base end portion which is the right end portion of the arm member 1 in the drawing. It is provided so as to be movable along the direction (see FIG. 3).

  And the stopper body 11 extends while descending from the base end portion 11a toward the gripping tool 12 side, that is, the base end portion 11a as the upper end portion in the drawing depending on the appropriate dimension, that is, the gripping tool 12 side. And an abutting portion 11b inclined toward the surface. Incidentally, although not illustrated, the base end portion 11a may be formed to have a length dimension that allows the side surface of the flange that is thin in a small bridge to be abutted.

  On the other hand, the abutting portion 11b is not shown in the figure, but it allows the lower side edge of the flange that is thin in a small bridge to allow contact, and the flange that is thick in the large bridge B. It is formed to have a length dimension that allows the lower side edge F1 (see FIG. 3) of F to abut.

  Therefore, in this stopper body 11, when the arm member 1 is in a state where the mounting portion 1b is placed on the upper end of the bridge B, the abutting portion 11b contacts the side edge F1 of the flange F in the bridge B. Will allow contact.

  With respect to the stopper body 11, the gripping tool 12 connects the upper side portion 12a facing the upper end of the arm member 1, the lower side portion 12b facing the upper side portion 12a, and the lower side portion 12b and the upper side portion 12a. A wall portion 12c, and a notch 12d formed in a laterally concave shape through which a side portion (not shown) of the flange F is inserted.

  The gripping tool 12 includes a bolt 12e serving as a fastening tool on the upper side portion 12a. When the bolt 12e is screwed into the upper side portion 12a, the flange F is pressed against the lower side portion 12b together with the arm member 1. . Incidentally, the bolt 12e may be provided at the lower side 12b instead of being provided at the upper side 12a in view of its function.

  In addition, although the upper side part 12a is curvedly formed so as to follow the shape of the lower arm member 1 in the drawing, it may be formed in a flat plate shape, although not shown in the figure. Although the number of the bolts 12e is two, that is, a plurality of bolts 12 in the drawing, it may be one instead of the bolt 12e.

  Therefore, in this gripping tool 12, the other side of the flange F whose side edge F1 is in contact with the opposing stopper body 11 is inserted into the notch 12d, and the flange F is used as a stopper. By connecting to the arm member 1 by tightening the bolt 12e while being pushed toward the body 11, the attachment portion 1b of the arm member 1 can be connected to the flange F.

  In the stopper body 11, the abutting portion 11 b is inclined and opposed to the gripping tool 12, so that the flange F between the abutting portion 11 b and the gripping tool 12 is the central portion of the arm member 1. This effectively prevents the central portion of the arm member 1 from floating above the bridge B and ensures that the arm member 1 is connected to the bridge B.

  Incidentally, the base end portion of the arm member 1 is provided with a retaining ring 1c formed in a circular ring shape (see FIGS. 2 and 3), and the outer diameter of the retaining member 1c is a pair of wall portions in the gripping tool 12 described above. Although it is assumed that the gap is larger than the interval formed by 12c, the gripping metal fitting 12 is prevented from falling off from the arm member 1. Of course, any other aspect than the above can be selected for the retaining member 1c.

  The arm member 1 is provided with the stopper body 11 and the gripping tool 12 so that the center of gravity moves downward from the center of the round pipe. As a result, the arm member 1 is placed on the flange F of the bridge B. When this is done, it does not roll on the flange F, and the stopper body 11 and the gripping tool 12 do not face upward, and the connecting operation of the arm member 1 to the flange F can be quickly practiced.

  On the other hand, one fixing tool 13 and the other fixing tool 14 provided on the arm member 1 removably connect the scaffold plate 2 to the overhanging portion 1 a of the arm member 1, and the scaffold plate 2 is connected to the arm member 2. In practice, the scaffolding plate 2 is fixedly coupled so that the scaffolding plate 2 is not displaced in the width direction of the scaffolding plate 2.

  Specifically, as shown in FIG. 2 and FIG. 3, both the fixtures 13 and 14 are in a posture to grip the edge member 23 provided on the scaffold plate 2 in the axial direction from above, and this edge member 23. Is configured to be able to be pressed against the upper end of the arm member 1.

  Here, the description of the fixtures 13 and 14 will be postponed and the scaffold plate 2 will be described. The scaffold plate 2 is made of, for example, an aluminum alloy material or a synthetic resin material, and is made of conventional so-called solid wood or plywood. Compared with the formed scaffolding plate, the durability is improved and the weight is reduced to improve the handling.

  When the scaffolding plate 2 is reduced in weight to improve handling, when the working scaffold S formed by the scaffold device according to the present invention is provided and when the working scaffold S is removed, the scaffold device disclosed in the above literature is used. In comparison with the above, the labor of the worker in carrying in and removing the scaffold plate 2 can be reduced, that is, the work can be simplified.

  Then, for example, as shown in FIG. 4, the scaffolding plate 2 is formed in a narrow and long length having a length of about 4.0 meters while a width of about 0.4 meters, Specifically, the two plate members 21 provided in the longitudinal direction that is the axial direction of the scaffolding plate 2 and the short side direction that is on the back side of the plate member 21 and that crosses the axial direction of the scaffolding plate 2 are provided. A plurality of crosspiece members 22 having a space in the longitudinal direction of the scaffolding plate 2 and edge members 23 connected to both ends of the plurality of crosspiece members 22 in the axial direction and parallel to the plate member 21 with a gap. With.

  The length of the scaffolding plate 2 is basically arbitrary, and is therefore set to 2 meters shorter than about 4.0 meters or 6 meters longer than about 4.0 meters. There is also a case.

  The plate member 21 has a shallow cross-sectional shape in the short direction (see FIG. 4 (D)) or a shallow C channel shape (not shown), and the upper surface is a passage surface L. The main body 21a is set to have a plurality of small holes 21b for avoiding accumulation of rainwater and dust on the upper surface of the main body 21a (see FIG. 4A). Thus, the main body 21a is provided in a raised state.

  The reason why the main body 21a is provided in the plate member 21 in a state of being lifted with respect to the crosspiece member 22 will be described later. Further, the two adjacent plate members 21 are separated from each other with a gap having an appropriate width so as to escape the wind from above and below. 4 (C) and 4 (D), the illustration of the small hole 21b opened in the main body portion 21a of the plate member 21 is omitted.

  As shown in FIG. 4 (B), the crosspiece member 22 is formed of a square pipe and is provided in a direction crossing the axial direction of the plate member 21 with respect to the plate member 21, A plurality of plate members 21 are provided with appropriate intervals in the axial direction (see FIG. 4C).

  The crosspiece member 22 is formed of a square pipe and is provided with a plurality of appropriate intervals in the longitudinal direction of the plate member 21. Further, as described above, the plate member 21 is separated from the back surface of the main body portion 21a. By being provided in the state, a plurality of crosspieces 22 can be used as steps in the ladder.

  Incidentally, for connecting the crosspiece member 22 to the edge member 23, any method may be selected. For example, welding may be used, or as shown in the figure, the opening end of the crosspiece member 22 is enlarged. It may be by caulking that opens.

  Returning, the scaffolding plate 2 in the present invention is turned upside down when the so-called passage formed by the passage surface L is formed with the main body 21a of the plate member 21 facing upward, so that the crosspiece member 22 faces upward. In other words, it is possible to cope with the case where the ladder member 22 is used as a ladder, that is, when the beam member 22 is used as a footrest or the beam member 22 is made to be non-slip in the inclined path.

  And assuming the scene where this scaffold board 2 is utilized as a ladder, the crosspiece member 22 which becomes the step in the ladder does not contact the back surface of the main body portion 21a in the plate member 21, but the crosspiece member 22 is used as a step. It can be said that it is preferable to take care that the toes of a person who does not touch the back surface of the main body portion 21a, that is, have an interval where the toes are in full contact with the crosspiece member 22.

  Therefore, in the scaffold plate 2 used in the present invention, in order to improve the ease of use when using this as a ladder, the main body portion 21a that forms the passage surface L in the plate member 21 is provided on the back surface. It is supposed to be provided in a state of floating with respect to the side bar member 22 on the side.

  The crosspiece member 22 is formed of a square pipe and has a quadrangular cross-sectional shape. However, in the conventional ladder, the step has a cross-sectional shape of a downward D-shape. However, in the present invention, the crosspiece member 22 has a rectangular shape even if it is used as a step in the ladder. This is based on the setting that the rail member 22 is detachably connected to the handrail frame 3 as described later.

  Incidentally, the cross-sectional shape of the crosspiece member 22 may be circular with respect to the inner shape from the viewpoint of enabling the handrail frame 3 to be detachably connected. In other words, regarding the cross-sectional shape of the crosspiece member 22, there is no direct causal relationship between using the crosspiece member 22 for a step in the ladder and removably connecting the handrail frame 3 to the crosspiece member 22. .

  Accordingly, even if the outer shape of the connecting portion in the handrail frame 3 is formed in a circular shape, the outer shape of the crosspiece member 22 for detachably connecting the connecting portion in the handrail frame 3 is arbitrarily used, that is, used as a step. It is sufficient if it is formed in a preferable outer shape. However, when formed in a so-called similar relationship as in the illustrated embodiment, formation of each member is facilitated, which is advantageous in that the cost of the member is not increased.

  In addition, when both ends are connected to the edge member 23, the crosspiece member 22 is maintained in a state of floating with an appropriate dimension without contacting the upper end of the arm member 1 at the lower end. It is said.

  Returning, the edge member 23 is connected to both end portions in the axial direction of the plurality of crosspiece members 22 and is formed to be parallel to the plate member 21 with a gap. The reason why the edge member 23 is connected to the crosspiece member 22 is to ensure unity between the two, and the reason why the edge member 23 is parallel to the plate member 21 with a gap is used for various purposes. This is to make it available for use.

  For example, when fixing the scaffolding plate 2 to the arm member 1 by using the fixtures 13 and 14, the edge member 23 is used to ensure the so-called gripping property of the fixtures 13 and 14 with respect to the edge member 23 in the scaffolding plate 2. It is easier to ensure the gripping property when there is a gap than when there is no gap between the plate member 21 and the plate member 21.

  Further, in the illustrated case, the handrail frame 3 is detachably connected to the scaffolding plate 2. In this case, a fixing means to be described later that guarantees the connection state of the handrail frame 3 to the scaffolding plate 2 permanently. When using this, it is preferable that there is a gap between the plate member 21 and the edge member 23.

  In the illustrated case, the edge member 23 is formed of a rectangular tube-like body so that its cross-sectional shape is a hollow I-shape with a thick shaft. Care is taken to ensure that the fixing to the arm member 1 by 13 and 14 is easy. By the way, the edge member 23 has an I-shape with a thick shaft so that when the scaffold plate 2 is used as a ladder, the edge member 23 can be easily gripped with fingers as a hand grip portion, and the ladder can be climbed up and down. To make it safe.

  It should be noted that the edge member 23 is formed in the hollow I-shape of the above-described thick shaft from the viewpoint of enabling an integral connection of the crosspiece member 22 and allowing the fixing members 13 and 14 to be connected. Instead of this, although not shown in the figure, the opening may be formed in a rectangular C shape with the opening facing vertically outward.

  Returning, the one fixing tool 13 and the other fixing tool 14 are basically configured so that the edge member 23 (see FIG. 2) of the scaffolding plate 2 is moved from above to below as shown in FIGS. 1 and presser pieces 13a and 14a that are pressed toward 1 and connecting members 13b and 14b that are bolts that connect the presser pieces 13a and 14a to the arm member 1 in a fixed manner.

  The presser pieces 13a and 14a are provided with main body portions 13c and 14c that are in contact with the upper end of the edge member 23, leg portions 13d and 14d that are continuous with the main body portions 13c and 14c, and the upper end of the edge member 23 that is connected to the leg portions. And the hooks 13f and 14f for preventing the edge member 23 from coming off, and the hooks 13e and 14e are provided with bolt insertion holes 13g and 14g. It is connected to the lower arm member 1 by screwing the connecting tools 13b and 14b.

  Incidentally, the other fixing tool 14 operates so as to receive the edge member 23 of the scaffold plate 2 that slides on the arm member 1, so that the presser piece 14 a is provided so as to be movable up and down with respect to the arm member 1. The one fixing tool 13 operates so as to slide toward the edge member 23 of the scaffolding plate 2 so that the pressing piece 13a can swing the main body 13c in the vertical direction.

  Therefore, in the other fixture 14, the bolt insertion hole 14 g formed in the flange portion 14 e is a round hole (see FIG. 6B). A bolt insertion hole 13g formed in the portion 13e is formed into a long hole (see FIG. 5B).

  In addition, as shown in the figure, in the one fixing tool 13 and the other fixing tool 14, the flange parts 13e, 14e are provided with edge parts 13h, 14h that sandwich the arm member 1 from both sides (FIG. 5C ) And FIG. 6 (C)), it is considered that the edge portions 13h and 14h prevent the flange portions 13e and 14e, that is, the fixtures 13 and 14 from shifting in the direction crossing the arm member 1 at the upper end of the arm member 1. However, it goes without saying that the formation of the edges 13h and 14h may be omitted.

  By the way, in the place shown in FIG. 1, it is assumed that the scaffolding plate 2 removably connects the handrail frame 3. In other words, in this type of working scaffold that has been conventionally used, for example, as disclosed in Patent Document 1, a handrail is provided with a single pipe by using a clamp on an arm member on which a scaffold plate is placed. The single pipe is further connected to the single pipe horizontally by using a clamp.

  On the other hand, in the present invention, first, as a setting in which the handrail is provided or removed by making the handrail frame 3 detachable without assembling or disassembling the handrail with the component parts. Yes.

  Next, in the present invention, as shown in FIGS. 12 and 13, which will be described later, the handrail frame 3 is detachably provided in the socket 10a fixed to the arm member 10, whereas the position shown in FIG. In this case, the handrail frame 3 is detachably connected to the scaffold plate 2. In the case where the handrail frame 3 is set to be detachably connected to the scaffold plate 2, there is an advantage that the configuration of the arm member 1 does not need to be complicated because the socket 10 a is not provided in the arm member 10.

  Incidentally, from the viewpoint that the handrail frame 3 is detachably connected to the scaffold plate 2, although not shown, this is not connected to the crosspiece member 22 in the scaffold plate 2, but a toe plate connector 5 described later. By using such a tool, it may be detachably connected to the edge member 23 of the scaffolding plate 2.

Under the premise as described above, the handrail frame 3 detachably connected to the crosspiece member 22 in the scaffolding plate 2 will be described. The handrail frame 3 includes a pair of vertical members 31 and a pair of vertical members 31 as shown in FIG. A handrail body 32 having both ends connected to the upper ends of a pair of longitudinal members 31 is provided, and the longitudinal member 31 is provided with an insertion portion 33 orthogonal to the axial direction of the longitudinal member 31 at a lower end portion (not shown). As shown in FIG. 8, the insertion portion 33 is inserted into the opening end portion (not shown) of the crosspiece member 22 in the scaffold plate 2.

  The vertical member 31 and the handrail body 32 are each formed by a round pipe, and the handrail body 32 is formed in a loop shape, but instead of this, it is formed by a pipe separated vertically. Further, although not shown, a diagonal material for reinforcement may be provided.

  By the way, the insertion portion 33 is shown in the figure, and is formed in a cross section that can be inserted into the opening end portion of the crosspiece member 22 in the scaffolding plate 2. A two-plate structure is formed so as to conform to the inner shape of the pipe.

  If the insertion portion 33 is detachably connected to the crosspiece member 22, the insertion portion 33 may be formed in a shape similar to the cross-sectional shape of the crosspiece member 22. Considering that the vertical members 31 are integrally provided at the lower end portion, it is advantageous to form a two-plate structure in which two plate materials are simply arranged.

  In addition, in the insertion part 33, the base end of a double plate is welded to the lower end part of the vertical member 31, and the front-end | tip of a double plate is made into a free end, and the insertion to the crosspiece member 22 is attained. However, at that time, in particular, a spacer member 33a is provided at the tip of the two plates so that the tip of the two plates does not spread and it becomes difficult to insert the crosspiece member 22 into the opening end. Yes.

  Returning, the insertion part 33 is provided with a fixing means so that it does not easily come out from the opening end of the crosspiece member 22 that is the insertion destination, and this fixing means basically has an arbitrary configuration. May be selected. For example, although not shown, the fixing means includes an insertion pin, and the penetration member of the insertion pin and the insertion portion 33 are embodied to be integrated, so that the insertion member 33 can be It may be possible to prevent the slipping out.

  On the other hand, as shown in FIG. 8, the fixing means includes a hook piece 34 that is interposed at the lower end portion of the longitudinal member 31 so as to be movable up and down. It straddles the upper end and straddles the upper end of the crosspiece member 22.

  The hook piece 34 straddling the upper end of the edge member 23 can prevent the lower end portion of the longitudinal member 31 from separating from the edge member 23, and the hook piece 34 straddling the upper end of the crosspiece member 22 can be prevented. Can be prevented from falling around the insertion portion 31a as a rotation center.

  Therefore, as shown in FIG. 9, the hook piece 34 includes a main body portion 34 a straddling the edge member 23 (see FIG. 8), and the main body portion 34 a passes through the lower end portion 31 a (see FIG. 8) of the vertical member 31. A recess 34b is provided, and a bifurcated portion 34c straddling the crosspiece member 22 is provided at the tip.

  The main body portion 34a of the hook piece 34 is provided with a bent portion 43d at the rear end, and the bent portion 43d is provided with a so-called retrofitting stop piece 34e, and the hook piece 34, that is, a stopper, extends from the lower end portion 31a of the longitudinal member 31. The structure is prevented from falling off (see FIG. 8).

  When the hook piece 34 is interposed at the lower end portion of the vertical member 31, the hook piece 34 may be interposed in advance before the insertion portion 33 is provided at the lower end portion of the vertical member 31. A strategy may be selected.

  By the way, in the illustrated working scaffold S, the scaffold plates 2 that are detachably provided on the overhanging portion 1a of the arm member 1 are arranged in two parallel rows, and each of the scaffold plates 2 that are in two rows. The adjacent edge members 23 are connected to each other by the misunderstanding prevention device 6 (see FIGS. 2 and 3).

  By providing this misdiagnosis prevention tool 6, in each adjacent scaffold plate 2, for example, when an operator enters one of the scaffold plates 2, that is, a portion not supported by the arm member 1 from below. When the worker enters, the one scaffolding plate 2 bends and a step is formed between the other scaffolding plate 2 and, as a result, for example, an operator who is not aware of the occurrence of the step is leaning over the step and is in a posture. Try not to break it down.

  Therefore, as shown in FIGS. 10A and 10B, the misunderstanding prevention device 6 includes a main body 61, a receiving body 62, and a wedge 63, and the wedge 63 has a recess 61 a that is a lower end portion of the main body 61. The main body 61 and the receiving body 62 are integrated by being inserted through the vertical hole 62b of the upper end portion 62a of the receiving body 62 to be inserted and abutting against the inner bottom (not shown) of the recess 61a.

  That is, as shown in FIGS. 10C and 10D, the main body 61 is formed by bending a plate material having an appropriate width, and a recess 61a that enters a gap that appears between adjacent edge members 23, and the recess 61a. A flange portion 61b that extends from the upper end of 61a to both sides and sits on the upper end of adjacent edge members 23, and a hook portion 61c that bends downward from the outer end of the flange portion 61b. Therefore, when the main body 61 is disposed so as to cover the upper ends of the adjacent edge members 23, the adjacent edge members 23 are prevented from being separated from each other.

  On the other hand, the main body 61 is provided with an opening 61d in the recess 61a. The opening 61d allows the receiving body 62 to be inserted, and allows the rotation around the longitudinal axis of the receiving body 62 in the inserted state. .

  On the other hand, as shown in FIG. 10 (E), the receiving body 62 is formed of a plate material so that the front shape is an inverted T shape, and is locked to the lower ends of the adjacent edge members 23 to be the upper end portion 62a. Is inserted into the recess 61a of the main body 61, and the upper end 62a is provided with a slit-like vertical hole 62b that allows the wedge 63 to be inserted.

  On the other hand, the receiving body 62 has a flange 62c that functions as a stopper at the lower end, and the flange 62c is an edge member via a spacer metal fitting 64 as shown in FIGS. 10 (A) and 10 (B). It opposes the lower end of 23 (refer FIG. 10 (A), (B)). In addition, the spacer metal fitting 64 is provided with the hole 64a which accepts the insertion of the receiving body 62 in the center part.

  The wedge 63 is formed of a plate-like body, is inserted through the vertical hole 62b of the receiving body 62 and the concave portion 61a of the main body 61, and the lower end is in close contact with the bottom of the concave portion 61a and the upper end is in close contact with the upper end of the vertical hole 62b. The wedge effect is exhibited (see FIG. 10B).

  Incidentally, the wedge 63 is provided with a stopper 63b at the pointed end 63a which is the left end in FIG. 10B, and the pointed end 63a of the wedge 63 is formed on the upper end 62a of the receiving body 62. The slit 63 is provided after being inserted through the slit-shaped vertical hole 62b to prevent the wedge 63 from being detached from the receiving body 62.

  Therefore, in this mistake prevention tool 6, the main body 61 that contacts the upper ends of the adjacent edge members 23 and grips the upper ends of the adjacent edge members 23, and the adjacent edge members 23 Since the receiving body 62 locked to the lower end is integrally connected by the wedge 63, the occurrence of the misunderstanding phenomenon in which the upper ends of the adjacent edge members 23 are raised and lowered with respect to the other is prevented. .

  By the way, this misunderstanding prevention tool 6 connects the two scaffolding plates 2 placed on the arm member 1 in the illustrated case, but before being placed on the arm member 1, for example, the ground or the like It is also possible to connect the two scaffold boards 2 with.

  In order to connect the two scaffold plates 2 placed on the arm member 1 in parallel with each other by the misunderstanding prevention device 6, for example, the right end portion of the wedge 63 in FIG. The main body 61 and the receiving body 62 are hung by, for example, picking a base end portion (not shown), and from this position, the collar portion 62c of the receiving body 62 is inserted between the adjacent edge members 23 and lowered. .

  Next, the main body 61 is bridged over the upper end portions of the adjacent edge members 23, and from this state, the receiving body 62 is rotated so that the flange portion 62c is brought into contact with the lower end of the edge member 23. The receiving body 62 is pulled up so as to be inserted into a slit-like vertical hole 62b formed at the upper end of the receiving body 62. Thereby, the main body 61 and the receiving body 62 are integrated by the wedge 63, and the occurrence of misunderstanding between the two rows of scaffolding plates 2 is prevented.

  In other words, in the above-described scaffold device, the toe plate connector 5 is connected to the scaffold plate 2 (see FIG. 1), and the toe plate connector 5 is arranged on the scaffold plate 2 by the toe plate connector 5. It is possible to set up. By the way, the toe plate 4 is provided so as to prevent a tool or the like on the plate member 21 in the scaffold plate 2 from dropping below the upper end of the edge member 23.

  Therefore, the toe plate 4 is formed in a plate shape having an axial length slightly shorter than the axial length of the scaffold plate 2 although not specifically shown. The height is 4 centimeters, and the height is about 15 centimeters. Note that the toe plate 4 is usually formed of the same material as the scaffold plate 2, but this is not absolute, so when the scaffold plate 2 is formed of an aluminum alloy material, Of course, it may be formed of a synthetic resin material.

  The reason why the length dimension of the toe plate 4 is shorter than the length dimension of the scaffold plate 2 is that the toe plate connector 5 is coupled to the edge member 23 of the scaffold plate 2 and is larger than the length of the scaffold plate 2. Based on the fact that it doesn't make sense. In addition, even if the length of the toe plate 4 is larger than the length of the scaffold plate 2, the toe plate 4 does not stop functioning. Therefore, the fact that the toe plate 4 is longer than the scaffold plate 2 prevents the establishment of the present invention. It is not a thing.

  On the other hand, as shown in FIG. 11 (A), the toe plate connector 5 has a hook bolt 51 that is connected to the edge member 23 of the scaffolding plate 2 and stands upright, and a lower end side portion of the hook bolt 51 can be moved up and down. A lower presser piece 52 to be mounted and an upper presser 53 that is interposed at the upper end portion of the hook bolt 51 so as to be movable up and down and that faces the lower presser piece 52 are formed.

  The hook bolt 51 has a U-shaped hook portion at the lower end 51a, and allows the edge member 23 in the scaffold plate 2 to be inserted into the inside of the hook portion. That is, since the edge member 23 in the scaffolding plate 2 becomes the fixed side when viewed from the toe plate connector 5, the hook bolt 51 is engaged with the lower end portion 51 a so as to wrap the edge member 23 from the lower end side of the edge member 23. The member 23 is detachably connected.

  The lower presser piece 52 presses the lower edge member 23 from the upper side to the lower side and carries the lower end of the toe plate 4. In other words, in the toe plate connector 5, the hook bolt 51 rising from the edge member 23 holds the toe plate 4 while being connected to the edge member 23. As a result, the number of components of the toe plate connector 5 is reduced, so that the number of operations when the toe plate 4 is provided can be reduced and the cost of components can be reduced.

  As a manifestation, the lower presser piece 52 reliably holds the toe plate 4 while the edge member 23 is fixedly fixed at a predetermined position. In other words, the lower pressing piece 52 includes a receiving portion 52 a that is opposed to the lower end portion 51 a of the hook bolt 51 from above, and the edge member 23 is sandwiched between the receiving portion 52 a and the lower end portion 51 a of the hook bolt 51. .

  As shown in FIGS. 11B and 11C, the lower pressing piece 52 includes a rising portion 52b that is connected to the receiving portion 52a and rises upward, and a drooping portion that hangs downward. 52c.

  The rising portion 52b prevents the lower end of the toe plate 4 from slipping sideways away from the receiving portion 52a, and the hanging portion 52c grips the upper end portion of the edge member 23 so as to lower the lower end of the hook bolt 51. The part 51 a is prevented from separating from the edge member 23, that is, the scaffold plate 2. The receiving portion 52a has a hole 52d (see FIG. 11B) through which the hook bolt 51 is inserted.

  The upper presser 53 is configured to press the upper end of the toe plate 4 whose lower end is supported by the lower presser piece 52 from above, and is a nut that is screwed into a screw 51 b formed on the upper end of the hook bolt 51. The toe plate 4 is sandwiched between the lower presser piece 52 by being pushed downward by the screw 54.

  Therefore, as shown in FIGS. 11D, 11E, and 11F, the upper presser 53 includes a presser portion 53a that comes into contact with the upper end of the toe plate 4, and a hook bolt 51 is provided on the presser portion 53a. And a hook portion 53c that is bent downward at the rear end of the presser portion 53a.

  Therefore, in this presser 53, the toe plate 4 is sandwiched between the lower receiving member 52, and at this time, the upper end of the toe plate 4 may fall so as to be separated from the hook bolt 51. It is blocked by the hook portion 53c.

  The upper presser 53 is provided with a bent portion 53d at the tip of the presser portion 53a, and a laterally recessed portion 53e through which the vicinity of the upper end portion of the hook bolt 51 is inserted into the bent portion 53d.

  Therefore, in the upper presser 53, when the upper end of the toe plate 4 is pushed downward by the presser portion 53a, the vicinity of the upper end portion of the hook bolt 51 is formed of the lateral concave portion 53e formed in the bent portion 53d. In other words, it is prevented from coming into contact with the bottom and preventing the presser portion 53 from floating and preventing the presser portion 53a from rising, thereby preventing the toe plate 4 from being firmly pressed. It should be noted that the upper presser 53 provided at the upper end of the hook bolt 51 can of course be used even when the so-called height position of the toe plate 4 is different.

  In addition, in the drawing, the toe plate connector 5 is provided from the outside of the scaffold plate 2, that is, the hook bolt 51 is approached from the outside of the scaffold plate 2 and connected to the edge member 23. Although not shown, the hook bolt 51 may be connected to the edge member 23 through the so-called inner side of the scaffold plate 2, that is, through a gap between the edge member 23 and the plate material 21.

  In addition, the shape of the lower presser piece 52 and the upper presser 53 may be arbitrarily changed as long as the lower presser piece 52 and the upper presser 53 can perform their functions in a predetermined manner. Of course.

  In order to form the work scaffold S by the scaffold device according to the present invention formed as described above, the following work procedure, that is, the formation method is used. Basically, the arm member 1 is provided on the bridge B, then the scaffolding plate 2 is provided on the arm member 1, and the handrail frame 3 is further provided on the scaffolding plate 2.

  When the arm member 1 is provided on the bridge B, the mounting portion 1b of the arm member 1 is positioned on the flange F of the bridge B. At this time, first, the projecting portion 1a of the arm member 1 is lowered. In this way, the arm member 1 is slanted, or the arm member 1 is kept in a substantially horizontal state so that the overhanging portion 1a is greatly projected to the outside of the bridge B, so that the flange F of the bridge B The side edge F1 is surely brought into contact with the stopper body 11 fixed to the arm member 1.

  Then, when it is confirmed that the side edge F1 of the flange F of the bridge B is securely in contact with the stopper body 11, the mounting portion 1b of the arm member 1 is lowered onto the flange F of the bridge B, or The mounting portion 1b of the arm member 1 is pulled back so as to bring the mounting portion 21b along the flange F of the bridge B.

  At this time, the grip 12 held at the base end of the arm member 1 is retracted as much as possible, that is, close to the base end of the arm member 1, and the flange of the bridge B It is important to keep it in a state that does not interfere with F.

  After placing the arm member 1 on the flange F of the bridge B, the gripping tool 12 is advanced along the arm member 1 so that the gripping tool 12 grips the other side of the flange F of the bridge B. In this state, the fastening of the fastening tool 12b ends the fixing of the arm member 1 to the flange F.

  Next, the scaffolding plate 2 is coupled to the overhanging portion 1 a of the arm member 1 coupled to the flange F of the bridge B. At this time, the two scaffolding plates 2 are coupled by using the misplacement prevention tool 6. In this case, it may be preliminarily integrated with the misunderstanding prevention tool 6 before being placed on the arm member 1, and after the scaffolding plates 2 are arranged in two rows on the arm member 1. The two rows of scaffolding plates 2 may be integrally connected with the misunderstanding prevention tool 6.

  When the two rows of scaffolding plates 2 are connected to the arm member 1, the scaffolding plate 2 is placed on the arm member 1 so as not to interfere with one and the other fixtures 13 and 14 provided on the arm member 1. To be placed.

  Specifically, the scaffold plate 2 positioned on the distal end side of the arm member 1 is referred to as an outer scaffold plate 2, and the scaffold plate 2 positioned closer to the center portion of the arm member 1 is referred to as an inner scaffold plate 2. In this case, first, the edge member 23 of the inner scaffolding plate 2 is brought into contact with the other fixing member 14 provided near the center of the arm member 1, and the inner scaffolding plate 2 is moved to the arm member. 1 is mounted.

  The outer scaffolding plate 2 is in a posture in which the inner scaffolding plate 2 is fixed to the arm member 1 by the other fixing tool 14, that is, in a posture in which an operator can enter the inner scaffolding plate 2. The outer scaffolding plate 2 is placed on the arm member 1 in a state where the edge member 23 is abutted against one fixing member 13 provided on the distal end side of the arm member 1.

  Next, the outer scaffold plate 2 is slid toward the central portion on the arm member 1 and moved to the inner scaffold plate 2 side, and one fixing tool 13 is slid toward the central portion so that the outer scaffold plate is moved. 2 is fixed to the arm member 1. Fixation to the arm member 1 of the scaffolding plate 2 by one fixing tool 13 and the other fixing tool 14, that is, connection, is performed by tightening bolts that are the connecting tools 13b and 14b in the fixing tools 13 and 14, respectively.

  When the two rows of scaffolding plates 2 are integrally connected with the misplacement prevention device 6 after the two rows of the scaffolding plates 2 are arranged on the arm member 1, the outer scaffolding plate 2 faces the inner scaffolding plate 2. It is assumed that the misplacement prevention device 6 is set so as to function in a state in which it is slid. The connection of the two rows of scaffolding plates 2 by the misplacement prevention device 6 is performed by the work procedure for the above-described misplacement prevention device 6. Realized.

  And in the scaffold apparatus of this invention, if the handrail frame 3 is provided in the scaffold board 2 arrange | positioned at the arm member 1 as mentioned above, and when needed, a toe board coupling tool will be attached to the scaffold board 2. When 5 is connected and the toe plate 4 is provided, the formation of the working scaffold S is completed.

  Incidentally, the provision of the toe plate 4 on the scaffold plate 2 and the connection of the two scaffold plates 2 with the misunderstanding prevention tool 6 are necessary for the formation of the working scaffold S formed by the scaffold device according to the present invention. It is not required.

  FIG. 12 shows a scaffold device according to another embodiment of the present invention, which will be described below. In the scaffold device shown in FIG. 12, the scaffold device shown in FIG. In comparison, first, it is assumed that the arm member 10 is formed to be extendable and then the handrail frame 3 is detachably connected to a socket 10a fixed to the arm member 10, and further, in the illustrated case, The arm member 10 is provided with a lifting prevention tool 8 (see FIGS. 13 and 18) that prevents the two scaffold plates 2 placed on the arm member 10 from being lifted from the arm member 10 in parallel. .

  To describe sequentially, first, as shown in FIG. 13, the arm member 10 includes an outer pipe 15 and an inner pipe 16, and the inner pipe 16 is inserted into the outer pipe 15 so as to be retractable and extendable. .

  In the illustrated example, the overhanging portion 10 b of the arm member 10 is configured by the outer pipe 15, and the inner pipe 16 is configured by the mounting portion 10 c of the arm member 10.

  By setting the overhanging portion 10b of the arm member 10 to be configured by the outer pipe 15, it is possible to set the length in the axial direction of the overhanging portion 10b to be a fixed length, and a region on which the scaffold plate 2 is placed. This is advantageous in that it can always be secured.

  Therefore, the outer pipe 15 is prepared in two types, long and short. As shown in the figure, when the scaffolding plate 2 is connected to the arm member 10 in two rows, the long outer pipe 15 is used. However, when the scaffolding plate 2 is connected to the arm member 10 in a line, the short outer pipe 15 is used.

  By the way, from the viewpoint that the arm member 10 is configured to be extendable and retractable, each of the outer pipe 15 and the inner pipe 16 may be a round pipe, although not shown, instead of a square pipe.

  That is, as long as the outer pipe 15 and the inner pipe 16 are each made of a round pipe and the inner pipe 16 is connected to the outer pipe 15 so as to be able to protrude and retract, the arm member 10 can be formed to be extendable. .

  On the other hand, if the inner pipe 16 can be moved into and out of the outer pipe 15 using, for example, a stopper structure 7 to be described later, relative rotation between the outer pipe 15 and the inner pipe 16 is prevented. It becomes essential to be done.

  As a measure for preventing relative rotation between the outer pipe 15 and the inner pipe 16 made of this round pipe, although not shown, various proposals have been made. For example, a protrusion formed on the inner surface of the outer pipe 15 is formed on the inner pipe. The relative rotation may be prevented by being inserted into a concave groove formed on the outer surface of 16. Accordingly, in the arm member 10 shown in FIG. 13, it is not necessary to form the arm member 10 as a square pipe because it can be expanded and contracted. Even if it is formed, it will be good.

  Returning, the stopper structure 7 for fixing the protruding and retracting position of the inner pipe 16 relative to the outer pipe 15, that is, the stretched state of the arm member 10, is formed so as to be able to aim at the outer pipe 15 and the inner pipe 16, as shown in FIG. Hole 15a, 16a made, and a pin 71 inserted through the hole 15a, 16a being aimed.

  Explaining briefly, the stopper structure 7 includes, in addition to the holes 15a and 16a and the pin 71, a plate 72 connected to one end of the outer pipe 15, a spring receiver 73 connected to the plate 72, and the spring. An urging spring 74 provided between the receiving 73 and the pin 71 is provided.

  The plate 72 is connected to one end portion of the outer pipe 15, that is, the upper end of an opening end portion (not shown) through which the inner pipe 16 can be inserted and retracted, and so to speak, the center portion penetrates the wall thickness in the vertical direction. The pin hole 72a is aimed at the hole 15a opened at the upper end of the open end of the outer pipe 15. Although not illustrated, the inner pipe 16 includes a plurality of holes 16a that are aligned at appropriate intervals in the axial direction at the upper end portion and can be aimed at the holes 15a of the outer pipe 15.

  The spring receiver 73 is formed by bending a steel plate or the like into a hooked corner U shape, and has a space (not shown) extending upward in the center by connecting a collar (not shown) to the plate 72. The urging spring 74 is formed in this space.

  The urging spring 74 is an extension spring that locks the upper end inside the upper end of the spring receiver 73 and supports the lower end on the horizontal shaft 75 provided in the vicinity of the lower end of the pin 71. . Further, the horizontal shaft 75 prevents the tip portion of the pin 71 from further descending when the portion protruding from the outer periphery of the pin 71 contacts the upper end of the plate 72. The pin 71 is provided with a pull ring 71a at the upper end, and it is possible to input a human force as an external force against the spring force of the urging spring 74 using the pull ring 71a.

  Therefore, in this urging spring 74, when the pin 71 is lifted with respect to the spring receiver 73 by an external force, the pin 71 contracts to exert a spring force and the external force that lifts the pin 71 is released. When the pin 71 is lowered, the tip portion as the lower end portion is inserted into the holes 15a and 16a of the outer pipe 15 and the inner pipe 16, and the relative movement between the outer pipe 15 and the inner pipe 16, that is, the arm member 10 The expansion and contraction is prevented and the state is maintained.

  Then, when the pin 71 is pulled up and contracted to the maximum, the biasing spring 73 comes out of the hole 16a formed in the inner pipe 16 and the relative relationship between the inner pipe 16 and the outer pipe 15 is increased. The movement, that is, the expansion / contraction of the arm member 10 is allowed.

  The plate 72 is connected to the outer pipe 15 with the use of the bolt 76 in a state where the flange portions of the spring support 73 are stacked. However, if the pin 71 functions in the stopper structure 7, this plate 72 is used. The arrangement may be omitted. However, as shown in the figure, when the plate 72 is used, the stopper structure 7 can be assembled, which is advantageous in terms of facilitating the attachment work to the upper end portion of the outer pipe 15.

  On the other hand, the arm member 10 is configured to be extendable and retractable by inserting the inner pipe 16 into the outer pipe 15 so as to be retractable. From this, the inner pipe 16 is pulled out of the outer pipe 15 with a large stroke. It is not preferable that the two come out and are separated from each other. Therefore, in the illustrated case, the arm member 10 is provided with a retaining means.

  As shown in FIG. 15, the retaining means includes a retaining rod 18 provided so as to straddle the inside of the outer pipe 15 and the inner pipe 16, and the retaining rod 18 is positioned in the outer pipe 15. The one end portion 18a is connected to a bolt 15b that is a stop portion provided in a penetrating state in the outer pipe 15, and is set to be a fixed end. 15, in order to avoid complication of the drawing, the stopper structure 7 (see FIG. 14), the other fixture 140 (see FIG. 13), and the stopper body 11 (see FIG. 13) are described. ) Is omitted.

  On the other hand, the other end portion 18b of the retaining rod 18 positioned in the inner pipe 16 is set in a so-called free state inside the inner pipe 16, that is, a free end, a vicinity of the other end portion 18b, That is, a portion near the one end 18a is inserted through a slit formed in the lid 16b provided so as to close the opening end of the inner pipe 16, and the slit is formed in a T shape although not shown in detail. Thus, the vertical slit portion 16d as the lower portion is made to be continuous with the horizontal slit portion 16c as the upper end portion.

  Therefore, in this slit, the horizontal slit portion 16c allows the insertion of the so-called lateral other end portion 18b of the retaining rod 18 and allows the other end portion 18b to be introduced into the inner pipe 16, The other end 18b introduced into the inner pipe 16 can be lowered through the vertical slit 16d.

  The retaining rod 18 is rotated 90 degrees in a state where the vertical slit portion 16d is lowered, and the bolt 15b serving as a retaining portion passes through the one end portion 18a, so that the retaining pipe 18 is provided in a fixed state on the outer pipe 15. The other end portion 18b is locked to the edge portion (not shown) of the vertical slit portion 16d, so that the other end portion 18b does not come out of the inner pipe 16 and functions as a stopper.

  In addition, although said slit was formed in the cover body 16b provided so that the opening end of the inner side pipe 16 may be plugged up in illustration, it replaces with this, although not shown in figure, it is the opening of the inner side pipe 16 It may be formed on a cap member provided separately at the end.

  In addition, as shown in the figure, the one end 18a and the other end 18b of the retaining rod 18 are formed in a triangular shape in an elevational view, but as long as a predetermined so-called stopper function is exhibited, instead of this, Although not shown in the drawings, it is optional to have a round ring shape or a lateral T shape.

  The above-described retaining means, that is, the work of retaining the outer pipe 15 and the inner pipe 16 with the retaining rod 18 is practiced when the inner pipe 16 is inserted into the outer pipe 15 so that it can be projected and retracted. Of course.

  The arm member 10 formed to be extendable and contractible as described above includes a stopper body 11 on a mounting portion 10c connected to the flange F of the bridge B, and a pusher 17 facing the topper body 11, and this A flange F of the bridge B is sandwiched between the pusher 17 and the stopper body 11 so that the arm member 10 can be connected to the bridge B.

  To explain a little, the stopper body 11 shown in FIG. 13 is basically formed in a mode having a base end portion 11a and a contact portion 11b, like the stopper body 11 shown in FIG. 10, that is, integrally provided at the lower end of the outer pipe 15, the side edge F 1 of the flange F in the bridge B is brought into contact with the contact portion 11 b.

  On the other hand, the stopper body 11 allows the movement of the other fixing member 140 because the arm member 10 is provided with the other fixing member 140 described later so as to be movable with respect to the arm member 10. In other words, although not shown in the drawing, the stopper body 11 is formed in a thin wall narrower than the width of the arm member 10, and the other fixing tool 140 that moves along the arm member 10 includes a split 142b (FIG. 17C). For example).

  On the other hand, the pusher 17 is provided at the base end portion which is the right end portion in FIG. 13 of the arm member 10 so as to be movable along the axial direction of the arm member 10, and to the moving portion 17a. And a pressing piece 17b that faces the stopper body 11, and the pressing piece 17b has a base end part 17c formed in the same manner as the base end part 11a and the abutting part 11b of the stopper body 11 and the pressing part 17b. A contact portion 17d is provided.

  And in the pushing piece 17b, it is supposed that the side edge F2 of the flange F on the opposite side to the side edge F1 which contacts the stopper body 11 in the flange F of the bridge B is made to contact | abut to the contact part 17d.

  Further, in this pusher 17, the moving part 17 a is formed in a cylindrical shape with a lid along the base end of the arm member 10, that is, the inner pipe 16, and is formed at the center of the lid (not shown). It is assumed that the bolt 17e with a round ring screwed is screwed to the central portion of the lid member 16e provided so as to close the opening end of the inner pipe 16.

  Therefore, in this pusher 17, the moving portion 17a moves forward and backward in the axial direction of the arm member 10 at the proximal end portion of the inner pipe 16 by the rotation operation of the bolt 17e with a circular ring. Move forward or backward toward the tip of the.

  When the moving portion 17a moves forward toward the distal end portion of the arm member 10, the flange F of the bridge B is sandwiched between the proximal end portion 11a of the stopper body 11 and the contact portion 17d of the pressing piece 17b. Thus, the attachment portion 10c of the arm member 10 can be connected to the flange F.

  By the way, in the place shown in FIG. 13, the scaffolding plate 2 is connected to the arm member 10 by using one fixing tool 130 shown in FIG. 16 and the other fixing tool 140 shown in FIG. The one and the other fixtures 130 and 140 are provided so as to be movable in the axial direction of the arm member 10 with respect to the arm member 10.

  That is, in the case of the embodiment shown in FIGS. 1 to 3, the connecting tools 13d and 14d made of bolts in one fixing tool 13 and the other fixing tool 14 are preliminarily screwed onto the arm member 1 in advance. Accordingly, the presser pieces 13a and 14a, that is, the respective fixing tools 13 and 14 can move slightly because of the holes through which the connecting tools 13d and 14d are inserted, but along the axial direction of the arm member 1. It is not set to move freely.

  On the other hand, since one fixing tool 130 and the other 140 provided on the arm member 10 shown in FIG. 13 are both movable in the axial direction of the arm member 10, the scaffolding plates 2 are arranged in two rows. Can be connected, that is, fixed in a row.

  As described above, in the embodiment shown in FIG. 13, the outer pipe 15 constituting the arm member 10 can be changed to a so-called long or short one, that is, when the scaffolding plate 2 is arranged in only one row, the short outer pipe is arranged. However, since the fixing members 130 and 140 are movable in the axial direction of the arm member 10, it is possible to arrange the scaffolding plates 2 in a row even with the long outer pipe 15. It will be possible.

  In addition, in the place shown in FIG. 1 thru | or FIG. 3 mentioned above, since both the fixing tools 13 and 14 will be provided in the arm member 1 so that a movement is impossible, the scaffold board 2 mounted in this arm member 1 is assumed. In this case, the arm member 1 that is set so that the space between both the fixtures 13 and 14 corresponds to the width of the single scaffolding plate 2 is used.

  Returning to the following, one fixing tool 130 and the other fixing tool 140 will be described. Basically, the fixing members 130 and 140 are located on the scaffold plate 2 and the edge member 23 provided in the axial direction is moved upward. Since the edge member 23 is pressed against the upper end of the arm member 10 in such a manner as to be gripped from the above, the same configuration as the one fixing tool 13 shown in FIG. 5 and the other fixing tool 14 shown in FIG. 6 is provided.

  That is, the one fixing device 130 and the other fixing device 140 are interposed between the holding pieces 131 and 141 that press the edge member 23 of the scaffold plate 2 from the upper side toward the lower arm member 1 and the arm member 10. The slide bodies 132 and 142 that are movable in the axial direction of the arm member 10, and the presser pieces 131 and 141 are connected to the slide bodies 132 and 142 and the movement of the slide bodies 132 and 142 with respect to the arm member 10 is prevented. And connecting tools 133 and 143 made of bolts.

  The presser pieces 131 and 141 are connected to the main body portions 131a and 141a in contact with the upper ends of the edge members 23 of the scaffold plate 2, the leg portions 131b and 141b continuous to the main body portions 131a and 141a, and the leg portions 131b and 141b. Are provided with hook parts 131c and 141c facing the upper ends of the slide bodies 132 and 142, the main body parts 131a and 141a are provided with hook parts 131d and 141d for preventing the edge member 23 from coming off, and the hook parts 131c and 141c are connected. Bolt insertion holes 131e and 141e that allow the tools 133 and 143 to be inserted are provided.

  The slide bodies 132 and 142 are formed to have a substantially rectangular cross section along the outer periphery of the arm member 10, that is, the outer pipe 15, and are movable in the axial direction of the arm member 10. And in the place shown in figure, in the other fixing tool 140, the lower end part 142b is provided with a split 142d, and the above-mentioned stopper body 11 is allowed to pass through this split 142d.

  The slide bodies 132 and 142 are provided with nuts 133b and 143b for screwing the screw shafts 133a and 143a of the couplers 133 and 143 into the upper ends 132a and 142a, and the screw shafts 133a and 143a of the couplers 133 and 143. It is provided with holes 132c and 142c for inserting the.

  The couplers 133 and 143 have a length dimension that allows the screw shafts 133a and 143a to be screwed into the nuts 133b and 143b with the heads 133c and 143c being in contact with the upper ends of the flanges 131c and 141c. When the screw shafts 133a, 143a are screwed into the nuts 133b, 143b, the upper ends 132a, 142a of the slide bodies 132, 142 are pulled up, and the lower ends 132b, 142b of the slide bodies 132, 142 are raised to the arm member 10. It will be in the state pressed against the lower end of this, and the movement with respect to the arm member 10 of the slide bodies 132 and 142 will be prevented.

  The above is the configuration of each of the fixtures 130 and 140, and in particular, the following consideration is given to the other fixture 140. That is, in the other fixture 140, as shown to (A) in FIG. 17, the connection part which connects the lower end side part 142f, the upper end side part 142e, the lower end side part 142f, and the upper end side part 142e. 142g, and its front shape is a crank shape.

  The other fixture 140 has a stepped portion 142h that is a continuous portion of the lower end side portion 142f and the connecting portion 142g, and the stepped portion 142h contacts the side end F3 of the flange F of the bridge B. This is allowed (see FIG. 13).

  Therefore, in the other fixing device 140, the edge member 23 in the scaffolding plate 2 is compared with the case where the fixing device 140 is formed in a so-called stray shape having no step in the front shape like the one fixing device 130. Can be positioned closer to the upper side of the flange F of the bridge B, and it is possible to prevent a useless gap from appearing between the scaffold plate 2 and the flange F of the bridge B.

  The one and the other fixtures 130 and 140 are formed as described above. In particular, in the one fixture 130, the socket 10a is provided by welding at the distal end portion of the arm member 10 described later. Thus, so-called disconnection from the arm member 10 is prevented.

  When one fixing tool 130 is disposed on the arm member 10 having the socket 10a welded to the distal end portion, the one fixing tool 130 is exchanged with the stopper body 11 provided on the arm member 10. It is preferable that the lower end portion 132b includes a split 132d that can be used.

  By the way, in the above-described embodiment, the scaffold device is provided with the misalignment prevention tool 6 and is in the two rows of scaffold plates 2 aligned and adjacent to each other on the arm member 1. In the embodiment shown in FIG. 13, two rows of scaffolding plates 2 aligned and adjacent to each other on the arm member 10 are fixed to the arm member 10. The lift prevention tool 8 for preventing the arm member 10 from floating is provided.

  The lifting prevention tool 8 may be used for fixing the adjacent two rows of scaffolding plates 2 to the arm member 1 in the embodiment shown in FIG. In the case of the embodiment shown in FIG. 13, it is also possible to connect the scaffold plates 2 in two rows by using the above-described misunderstanding prevention tool 6.

  In the following description, as shown in FIGS. 18 (A) and 18 (B), the lifting prevention tool 8 includes a base 81 that is movably fixed to the arm member 10 on which the scaffolding plate 2 is disposed, and the base. A shaft portion 82 standing at the center of the upper end of 81, and abuts against the upper ends of the edge members 23 of the two adjacent scaffolding plates 2 connected to the upper end of the shaft portion 82 (see FIG. 17A). A pressing piece 83.

  The base 81 is formed in a split square ring shape that wraps the arm member 10 by bending the plate material, and moves to the arm member 10, that is, the outer pipe 15 by tightening the split portion with a fastening tool including a bolt 84 and a nut 85. It is fixed freely.

  Note that the base 81 may be interposed in the arm member 10 after the hook, but when the base 81 is interposed in the arm member 10 in advance, the base 81 is not separated from the arm member 10 and therefore transports the arm member 10. Sometimes, it is advantageous in that the lifting prevention tool 8 can be transported.

  The shaft portion 82 is formed by a square pipe so as to extend between the edge members 23 of the adjacent two rows of scaffolding plates 2 and extend upward. Is set to be the same as or slightly narrower than the width dimension of the recess 61a of the main body 61 in order to prevent the function of the misunderstanding prevention device 6 from being hindered. The length of the shaft portion 82 is set to be slightly larger than the length of the edge member 23 in the scaffold plate 2 in the vertical direction.

  The presser piece 83 prevents the lifting of the edge member 23 placed on the base plate 81, that is, the base member 81, and is formed in a flange shape connected to the upper end of the shaft portion 82. It is assumed that the so-called unreasonable presence of the edge member 23 between the presser piece 83 and the base portion 81 is allowed.

  In turn, in the scaffold device shown in FIG. 13, the arm member 10 includes a socket 10a, and the handrail frame 3 can be detachably connected to the socket 10a.

  Therefore, the socket 10a is of course provided on the arm member 10, but basically, the socket 10a is provided on the distal end portion of the arm member 10, that is, on the overhanging portion 10b projecting outside the bridge B. The safety of the worker who enters on the scaffolding board 2 arranged in the exit part 10b is ensured.

  From the viewpoint of ensuring the safety of the worker, not only on the scaffolding plate 2 but also on the rear end of the arm member 10 in order to ensure the safety of the worker on the flange F of the bridge B. A socket 10a may be provided (see FIG. 13), and the handrail frame 3 may be detachably connected to the socket 10a.

  The socket 10a is formed of a cylindrical body, that is, a round pipe. The lower end of the socket 10a is welded to the distal end portion of the arm member 10 and rises. It is assumed that the arm member 10 is held by inserting the insertion portion 35 formed in a straight shape provided in (1).

  In addition, it is assumed that the bolt 36 penetrates the socket 10a in the radial direction, and the bolt 36 also penetrates the insertion portion 35 formed in the above-described straight shape, and a nut (not shown) is screwed into the bolt 36. Although it is mounted and is prevented from coming off, a pin that can be freely inserted and removed may be used in place of the bolt 36 and the nut, although not shown.

  When the work scaffold S is formed by the scaffold device shown in FIG. 13 formed as described above, it is provided on the bridge B in the same procedure as the scaffold device shown in FIGS. 1 to 3 described above. Therefore, detailed explanation is omitted, but the rough place is as follows.

  First, when connecting the attachment portion 10c of the arm member 10 to the flange F of the bridge B, the arm member 10 is extended by a so-called releasing operation of the stopper structure 7, and in this state, the attachment portion of the arm member 10 is extended. 10c is placed on the flange F of the bridge B.

  At that time, the pusher 17 that is movably provided at the rear end of the arm member 10 is maintained in a so-called retracted state as much as possible, that is, in a state of being separated from the rear end of the arm member 10. preferable.

  Then, with the stopper structure 7 maintained in the released state, the outer pipe 15 of the arm member 10 is pulled closer to the flange F of the bridge B, and the abutting portion 11b of the stopper body 11 contacts the side edge F1 of the flange F. The stopper structure 7 is caused to function in contact with the arm member 10 to fix the length of the arm member 10.

  Next, in this state, in the pusher 17, the moving part 17a is moved by the rotation of the round ring bolt 17e to move the pushing piece 17b, and the side edge F2 of the flange F of the bridge B is brought into contact with the abutting part. It is made to contact 17d. As a result, the flange F of the bridge B is sandwiched between the stopper body 11 and the pusher 17.

  Then, the other fixing member 140 held by the arm member 10 is moved so that the stepped portion 142g is brought into contact with the side end F3 of the flange F of the bridge B. In this state, the bolt 143 is rotated. Then, the other fixture 140 is connected to the arm member 10 in a fixed state.

  The placement of the scaffolding plate 2 on the arm member 10 depends on the use of one fixing tool 130 and the other fixing tool 140, and specifically, according to the following procedure. When the scaffolding plate 2 positioned on the distal end side of the arm member 10 is referred to as the outer scaffolding plate 2 and the scaffolding plate 2 positioned closer to the center of the arm member 10 is referred to as the inner scaffolding plate 2, first, Then, the inner scaffolding plate 2 is placed on the arm member 10 with the edge member 23 of the inner scaffolding plate 2 being in contact with the other fixture 140.

  At this time, the lifting prevention tool 8 interposed in the arm member 10 is placed in a so-called loosened state so that it can move, and the other fixing tool 140 of the edge member 23 in the scaffolding plate 2. It is better not to impede the contact with.

  Thereafter, the lifting prevention tool 8 is fixedly connected to the arm member 10 and the inner scaffolding plate 2, and the outer scaffolding plate 2 is connected to the lifting prevention tool 8. Then, one fixing tool 130 that moves the arm member 10 is connected to the outer edge member 23 of the outer scaffold plate 2, and the one fixing tool 130 is fixed to the arm member 10 by the rotation of the bolt 133. Connect to

  In addition, it is preferable that the two rows of scaffolding plates 2 arranged on the arm member 10 are connected by the misalignment prevention device 6, and the connection of the two rows of scaffolding plates 2 by the misunderstanding prevention device 6 is as described above. This is realized by a work procedure for the misunderstanding prevention tool 6.

  And after arrange | positioning the scaffold board 2 to the arm member 10 as mentioned above, the handrail frame 3 is connected with the socket 10a provided in the arm member 10, and when necessary, the toe board connector is attached to the scaffold board 2. When 5 is connected and the toe plate 4 is provided, the formation of the working scaffold S is completed.

  Incidentally, the provision of the toe plate 4 on the scaffold plate 2 and the connection of the two scaffold plates 2 with the misunderstanding prevention device 6 form the working scaffold S formed by the scaffold device shown in FIG. Of course, it is not essential.

  The above is the characteristic configuration of the present invention and the characteristic operational effects, but the following considerations can be made. First, in the place shown in FIGS. 1 to 3 described above, the arm member 1 is fixedly provided with the fixtures 13 and 14 in comparison with the arm member 10 shown in FIG. The arm members 1 having different lengths may be prepared depending on whether two rows or one row is provided.

  And in the place mentioned above, the structure is a bridge B, and this bridge B is formed of I-shaped steel. However, from the point of the present invention, the arm member 1 can be provided. As long as it is configured, it may be arbitrarily configured, and although not shown, it may be formed of, for example, a hollow steel having a rectangular cross section.

  In the above description, the bridge B as the structure is made of steel, but as long as the arm member 1 can be provided, the structure is made of concrete or made of wood. In addition, from the viewpoint of providing the arm member 1, the upper end of the structure is preferably formed of a flat surface without a step.

  Further, in the above description, the working scaffold S is formed so as to project to one side and outside of the bridge B. From the point of view of the present invention, it is projected to both sides of the bridge B. That is, for example, the arm member 1 is provided with overhanging portions 1a on both sides of the mounting portion 1b placed on the upper end of the bridge B, and the scaffolding plate 2 can be arranged on each overhanging portion 1b. In addition, the handrail frame 3 may be connected to the scaffold plate 2.

  In addition, as described above, the arm member 1 is set so that the scaffolding plate 2 can be placed on the overhanging portion 1a, but this is not shown. However, an appropriate suspension member may be suspended on the overhanging portion 1a of the arm member 1, and the scaffold plate may be suspended using this suspension member as a basic element, for example, to form a suspension scaffold for work.

  Further, in the above-described FIG. 13, the handrail frame 3 is detachably connected to the socket 10 a provided in the arm member 10, but when using this scaffold device, the handrail frame 3 is replaced. In the case of using a conventional handrail, it is assumed that the socket 10a is formed so as to allow the connection of a single tube. However, a so-called support column is erected by attaching a single tube to the socket 10a. A handrail may be formed by connecting a single tube laterally to the column by using a clamp or the like.

  Further, as shown in FIG. 13 described above, the socket 10a for detachably connecting the handrail frame 3 is provided in a fixed state at a so-called end portion such as the distal end portion of the arm member 10, so that one fixing tool 130 is provided. When the arm member 10 is moved and connected to the scaffolding plate 2, a gap may appear between the scaffolding plate 2 and the socket 10a. It is preferable to close the gap with the closing plate 4a provided on the side plate, or to close the gap with a closing plate formed in a form of a scaffolding plate parallel to the scaffolding plate 2, although not shown.

DESCRIPTION OF SYMBOLS 1,10 Arm member 1a, 10b Overhang | projection part 1b, 10c Attaching part 2 Scaffold plate 3 Handrail frame 6 Misalignment prevention tool 7 Stopper structure 8 Lifting prevention tool 10a Socket 11 Stopper body 11b Contact part 12 Grasping tool 13,130 One fixing tool 14, 140 The other fixing tool 15 Outer pipe 15a, 16a Hole 16 Inner pipe 17 Pushing tool 18 Retaining rod 21 Plate member 22 Cross member 23 Edge member 31 Vertical member 32 Handrail 33, 35 Insertion part 61 Main body 62 Receiving body 63 Wedge 71 Pin 81 Base frame 82 Base shaft 83 Presser piece B Bridge as a structure F Flange as an upper end F1 Side edge

Claims (7)

An arm member detachably provided on the structure, a scaffold plate detachably provided on the arm member, and a handrail frame detachably provided on the scaffold plate or the arm member ;
The scaffold plate includes a plate member, a cross member provided along the short direction on the back side of the plate member, and edge members connected to both ends of the cross member,
The arm member includes a mounting portion that is detachably connected to the upper end portion of the structure, and an overhang portion that continuously extends from the mounting portion and protrudes to the outside of the side of the structure.
A stopper body that contacts the upper end of the structure, and a gripping tool or a pusher that holds the upper end of the structure between the stopper body and the stopper body;
In the scaffold device provided with one fixing tool and the other fixing tool in which the overhanging part detachably fixes both sides of the scaffold plate ,
The one fastener and the other fastener are in contact with the upper end of the edge member of the scaffold plate and press the edge member downward, and the connector comprising a bolt for connecting the presser piece to the arm member And
The presser piece is constituted by a main body portion provided with a hook, a leg portion continuous with the main body portion, and a flange portion that is connected to the leg portion and is connected to the arm member via the connector.
The scaffold plate freely ligated detached the handrail frame to crosspiece member of, or scaffold, characterized in that it freely connected so detached the handrail frame to a socket which is fixed to the arm member.  An arm member detachably provided on the structure, a scaffold plate detachably provided on the arm member, and a handrail frame detachably provided on the scaffold plate or the arm member;
  The scaffold plate includes a plate member, a cross member provided along the short direction on the back side of the plate member, and edge members connected to both ends of the cross member,
  The arm member includes a mounting portion that is detachably connected to the upper end portion of the structure, and an overhang portion that continuously extends from the mounting portion and protrudes to the outside of the side of the structure.
  A stopper body that contacts the upper end of the structure, and a gripping tool or a pusher that holds the upper end of the structure between the stopper body and the stopper body;
  In the scaffold device provided with one fixing tool and the other fixing tool in which the overhanging part detachably fixes both sides of the scaffold plate,
  The one fixing tool and the other fixing tool are respectively interposed in the arm member so as to be movable along the axial direction, and a presser piece that presses the edge member in contact with the upper end of the edge member of the scaffold plate. A slide body, and a coupling tool comprising a bolt for connecting the presser piece to the slide body and preventing movement of the slide body relative to the arm member,
The presser piece is configured as a main body portion provided with a hook, a leg portion continuous to the main body portion, and a flange portion that is connected to the leg portion and is connected to the slide body via the connector.
  A scaffolding device, wherein the handrail frame is detachably connected to a beam member of the scaffold plate, or the handrail frame is detachably connected to a socket fixed to the arm member. The arm member includes an outer pipe and an inner pipe, and the inner pipe is inserted into the outer pipe so as to be able to extend and retract and can be expanded and contracted, and a stretched state is maintained by a stopper structure.
The stopper structure is movably held on the outer pipe, the outer pipe allowing the insertion of the pin, the hole opened in the inner pipe, and the hole opened in the outer pipe. The scaffold device according to claim 1, further comprising a hole that can be aimed and allows the pin to be inserted . The stopper body is provided at the lower end of the arm member near the center portion, and the gripping tool or the pressing tool is provided at the base end portion of the arm member so as to be movable along the axial direction of the arm member. A stopper body is provided in contact with the arm member and has an abutting portion extending toward the gripping tool or the pushing tool, and a side edge of the upper end portion of the structure is abutted against the abutting portion. The scaffold device according to any one of claims 1, 2, and 3, wherein an upper end portion of the structure is sandwiched between the stopper body and the gripping tool or the pressing tool . The scaffold plates placed on the arm member are arranged in two rows in parallel, and the scaffold plates in the two rows are connected by a mistake prevention device, and the mistake prevention device is connected to the upper end of each scaffold plate. A main body that grips the portion, a receiving body that is locked to the lower end of each scaffold plate and is connected to the main body, and a wedge that integrates the receiving body and the main body. The scaffold device according to any one of 3 and 4 . The scaffold plates placed on the arm member are arranged in two rows in parallel, and the adjacent scaffold plates in the two rows are connected by a lift prevention device, and the lift prevention device is connected to the arm. A base frame that is detachably held by the member; a base shaft that extends upward from the upper end of the base frame; and a presser piece that is provided at the upper end of the base shaft, and the phase between the presser piece and the base frame. The scaffold device according to any one of claims 1, 2, 3, 4 and 5, wherein adjacent scaffold plates are allowed to exist, and adjacent scaffold plates are fixed to the arm member . The handrail frame includes a pair of vertical members and a handrail body having both ends connected to the upper ends of the pair of vertical members, and the vertical member has a lower end portion as a straight insertion portion, or the vertical member is A lower end portion is provided with an insertion portion orthogonal to the axial direction of the longitudinal member, and the straight insertion portion is inserted into the socket, or the orthogonal insertion portion is inserted into the scaffold plate. Item 7. The scaffold device according to any one of Items 1, 2, 3, 4, 5 or 6 .

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