JP3225933U - Railing-mounted scaffolding and its scaffolding support - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a balustrade-mounted scaffold suitable for construction of a raised balustrade which is piled up on a wall balustrade of an elevated road for automobiles, and a scaffold holding metal fitting. SOLUTION: A scaffold holding metal fitting 1 that mounts a scaffold plate 40 that can be attached to and removed from a wall balustrade 20 is joined at a right angle to a back plate 5 that holds an adjusting bolt 3 that is pressed against an inner wall of the wall balustrade 20. The scaffolding support plate 10 includes a top plate 7, a suspension plate 9 that is joined at a right angle to the top plate 7, a scaffolding support plate 10 that is joined at a right angle to the hanging plate 9, and a side pillar support pipe 11 that is joined at a right angle to the scaffolding support plate 10. A balustrade-mounting type scaffold is installed with the scaffolding board 40 to be mounted on, and the raised balustrade 50 is attached to the top 28 of the wall balustrade 20, and then the scaffold is formed from the gap between the pillars of the raised balustrade 50, the side fences 54 and the top 28. Remove the holding metal fitting 1. [Selection diagram] Fig. 5

Description

  In elevated roads for automobiles, wall balustrades (reinforced concrete wall type protective fences) are provided as side walls of concrete to prevent falling of passing vehicles. The present invention relates to a scaffolding-type scaffold temporarily installed as a scaffolding for work required for the repair / improvement work of the wall balustrade installation site, and more particularly to a scaffolding structure suitable for a raised balustrade installation work.

  Conventionally, for construction of a shoulder wall portion on a bridge or an elevated road, a suspension scaffolding method has been known in addition to a method for constructing scaffolding from the ground surface. This suspension scaffolding method is useful in rivers and overpasses, and is an effective construction method that does not interfere with traffic under the viaduct. There are various technical examples of this suspension scaffolding method, and it is easy to attach the chain to the steel material in the structure with the main girders and beams of shaped steel such as the iron bridge. Perform assembly work in the air using the floor and connecting pipes. However, this method is difficult to take on elevated roads with concrete slabs where the steel frame is barely exposed. Therefore, in the elevated road of concrete structure, the means using the ground cover or the wall balustrade on the shoulder of the floor slab is adopted.

  For example, in Patent Document 1, the hanging legs 12 are hung in a U shape on both sides of the bridge roadbed so as not to touch the retaining wall of the bridge, and the hanging legs 12 and the hanging scaffolding 20 on both sides of the bridge are provided under the bridge. Stabilize the suspension scaffold by making the structure to connect with. Although this structure enables stable movement of the scaffold in the longitudinal direction of the bridge, it is a large-scale structure that is installed on both sides of the bridge, and a simple structure that can form a stable scaffold on only one side of the bridge is also desired. It is rare. As an example thereof, in the means of Patent Document 2, the U-shaped locking metal fitting 20 provided with the roller 25 on the outside is covered on the upper surface of the wall balustrade, and the scaffolding frame 34 is hung through the roller. In this structure, the upward lower frame 35 is pressed against the back surface of the road slab 103 (the back of the floor slab, which is the lower portion of the floor slab). Further, as another example, in Patent Document 3, a U-shaped metal fitting frame 1 is provided from above the road slab so as not to touch the upper surface of the ground covering of the road shoulder, and a U-shaped metal frame 1 having a scaffolding plate 6 mounted thereon. The hanging material 13 is assembled from the lower side of the road slab by tightening it with bolts and nuts so as to sandwich the upper side and the lower side of the road slab. In the examples of Patent Documents 2 and 3, the suspension scaffold can be erected only by the shoulder on one side of the concrete slab, but due to the complexity of the suspension structure, removal work is difficult.

  By the way, a raised balustrade may be attached to the top of the existing concrete wall balustrade as a means to improve the horizontal bearing capacity of the concrete balustrade and the guidance of the driver of the vehicle, or as a means to change the height of the protective fence due to legal revisions. . In mounting such a raised balustrade, it is desirable that a scaffold having a simple structure is erected and the scaffold can be easily removed after the balustrade is mounted.

JP, 2005-2327773, A JP 2001-172920 A JP-A-5-44202

  The above-mentioned conventional balustrade scaffolding erection structure has a structure in which the upper surface and the lower surface of the concrete slab are brought into contact with each other, and it is required to perform a connection work and a tightening work for a mounting bracket or the like. For this reason, the conventional means requires complicated installation and removal work, resulting in high cost and difficulty in ensuring safety. Therefore, it is necessary to provide a balustrade-mounted scaffold that uses a new scaffold-holding metal fitting, which is more lightweight, compact, and can be safely assembled by a single operator as a more desirable device for constructing a balustrade scaffold.

The present invention according to the first claim is a balustrade-mounted scaffold (1) which can be attached to and removed from a wall balustrade (20) forming a side surface of a road on which a vehicle or a pedestrian passes.
A back that extends downwards while holding an adjusting bolt (3) for pressing against the inner wall (26) of the wall balustrade (20) facing the vehicle or pedestrian passage side. A plate member (5),
A top plate member (7) which is joined to the back plate member (5) at a right angle and press-contacts the top part (28) of the wall balustrade (20);
A suspension plate member (9) that is joined at a right angle to the top plate member (7) and presses the outer wall (34) against the outer wall (34) of the wall balustrade (20) and extends downward.
A scaffolding support member (10) which is joined at a right angle to the hanging plate member (9) and the joining is at an intermediate position in the length of the hanging plate member (9);
A side pillar support pipe (11) located at the tip of the scaffold support member (10) and joined at a right angle to the scaffold support member (10);
Equipped with
The back plate member (5), the top plate member (7), the suspension plate member (9), the scaffold support member (10), and the side column support pipe (11) are fixed to the wall balustrade (20). It is a balustrade-mounted scaffold, which is characterized by being attached.

The present invention according to the second claim is for mounting a balustrade-mounted scaffolding plate (40) that can be attached to and removed from a wall balustrade (20) forming a side surface of a road on which a vehicle or a pedestrian passes, In the scaffolding holding metal fitting (1) which is detachable from the wall balustrade (20),
A back that extends downwards while holding an adjusting bolt (3) for pressing against the inner wall (26) of the wall balustrade (20) facing the vehicle or pedestrian passage side. A plate member (5),
A top plate member (7) for joining at a right angle to the back plate member (5) and for pressing the top part (28) of the wall balustrade (20).
A hanging plate member (9) which is joined at a right angle to the top plate member (7) and is pressed against the outer wall (34) of the wall balustrade (20) against the outer wall (34). When,
A scaffolding support member (10) which is joined at a right angle to the hanging plate member (9) and the joining is at an intermediate position in the length of the hanging plate member (9);
A side pillar support pipe (11) located at the tip of the scaffold support member (10) and joined at a right angle to the scaffold support member (10);
The scaffolding holding metal fitting (1) is characterized by comprising:

In the invention according to the third claim, a raised rail (50) fixed on the top (28) of a wall rail (20) forming a side surface of a road on which a vehicle or a pedestrian passes is fixed to the top (28). ), Which is supported by at least two struts (56) fixed to the upper surface of the (), is configured in parallel with the top portion (28), and the horizontal fence body (54) and the two There is a space (60) made up of the columns (56),
further,
A back that extends downwards while holding an adjusting bolt (3) for pressing against the inner wall (26) of the wall balustrade (20) facing the vehicle or pedestrian passage side. A plate member (5),
A top plate member (7) which is joined to the back plate member (5) at a right angle and press-contacts the top part (28) of the wall balustrade (20);
A suspension plate member (9) that is joined at a right angle to the top plate member (7) and presses the outer wall (34) against the outer wall (34) of the wall balustrade (20) and extends downward.
A scaffolding support member (10) which is joined at a right angle to the hanging plate member (9) and the joining is at an intermediate position in the length of the hanging plate member (9);
A side pillar support pipe (11) located at the tip of the scaffold support member (10) and joined at a right angle to the scaffold support member (10);
In a scaffolding retainer (1) for a balustrade-mounted scaffold equipped with
Even after the scaffold holding metal fitting (1) releases the pressing of the adjusting bolt (3) against the inner wall (26) and passes through the space (60), the back plate member (5) and the A balustrade-mounted scaffold, characterized in that the top plate member (7), the suspension plate member (9), the scaffold support member (10), and the side column support pipe (11) are maintained in a state of being joined to each other. It is a scaffolding holding metal fitting (1) for.

  INDUSTRIAL APPLICABILITY The present invention according to the first claim is easy to install on a wall balustrade forming a side surface of a road, and a safe scaffold can be erected on an outer wall of the wall balustrade even if only one worker is present, and After installing the raised balustrade on the upper side of the wall balustrade, it is possible to provide the balustrade-mounted scaffolding in which one operator can withdraw this scaffold.

  The present invention according to the second aspect can provide a lightweight scaffold holding metal fitting that has a simple structure for constructing the scaffold according to the first aspect and can be carried by one worker.

  The present invention according to claim 3 provides a raised scaffold for mounting on a wall balustrade, a scaffold holding metal fitting used for the construction work thereof, and a scaffold for a worker, and then can be removed from the raised silt and a scaffold holding metal fitting for a worker. Can be provided.

1 is a perspective view of a retaining bracket for a wall balustrade-mounted scaffold of the present invention. It is a shape figure of a wall balustrade for attaching a scaffold holding metal fitting. It is a layout drawing which installed the scaffold holding metal fittings on the wall balustrade. It is a perspective view which completed the erection scaffold. It is sectional drawing which installed the scaffold holding metal fitting in the wall balustrade, and attached the raised balustrade. It is a figure which shows the operation state which removes a scaffold holding metal fitting from a wall balustrade after the installation work of a raised balustrade. It is a perspective view which completed the raised balustrade of a wall balustrade.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing the entire scaffold holding metal fitting 1 of the present invention. The scaffold holding metal fittings 1 are made by combining steel plates as shown in the figure and joining them to each other. As each steel plate, an equilateral angle steel plate (L angle steel) having a length of about 400 mm to 600 mm is used. This steel plate is made of SS400 (rolled steel for general structure) and is angle steel L6 × 50 × 50 (thickness 6 mm, equilateral length 50 mm) defined by JIS (Japanese Industrial Standard) G3192. In order from the right side of FIG. 1, a back plate 5 (length 390 mm) for attaching the adjustment bolt 3, a top plate 7 (length 400 mm) for putting on a wall balustrade described later, and a hanging plate 9 (long length) for hanging the scaffolding. Steel material such as a scaffolding support plate 10 (length 590 mm) for mounting a scaffold, and a side pillar support pipe 11 (length 150 mm, diameter 65 mm) for attaching a single pipe to the left side of FIG. Are provided, and they are joined in directions orthogonal to each other. For this joining, each steel material is welded at a 90-degree angle to each other using a back plate welding plate 12, a suspension plate welding plate 13, and a scaffolding reinforcing plate 15 having a material thickness of SS400 and a plate thickness of 6 mm for the joining portion. . Therefore, the back plate 5, the suspension plate 9 and the side pillar support pipe 11 are all extended substantially vertically, and the top plate 7 and the scaffold support plate 10 are extended substantially horizontally.

  The adjusting bolt 3 has a nominal diameter M12 with the tip of the receiving tray 4 and a length of 100 mm, and is substantially orthogonal to the back plate 5 and is fixed with a nut (not shown). Further, the side pillar support pipe 11 is provided with a side pillar fixing screw portion 17 for inserting and fixing a side pillar pipe which will be described later. Further, since elastic rubbers 18 and 19 (width 50 mm, thickness 5 mm) are attached to the top plate 7 and the suspension plate 9 respectively, and used as slip stoppers, the rubbers 18 and 19 are natural rubber or synthetic rubber. Any of Therefore, the adjustment bolt 3, the top plate 7, the rubber 18, and the scaffold support plate 10 are arranged in a straight line when viewed from the top and bottom. With the above configuration, the scaffolding holding metal fitting 1 is made of steel having a width of 50 mm, a longitudinal length of about 600 mm, a horizontal length of about 1 m, and a weight of about 100 N (about 10 Kg). Therefore, because of this size and weight, this scaffolding holding metal fitting 1 can be carried by one operator by hand.

  The scaffold holding metal fitting 1 shown in FIG. 1 is attached to the concrete guard fence shown in FIG. This concrete guard fence is a so-called wall balustrade 20, and there are several types of wall balustrades having different basic shapes, but the shape is generally shown in FIG. The height of the wall balustrade 20 from the floor slab 22 to the top 28 at the top, that is, the height (H1) of the inner wall 26 of the wall balustrade 20 is about 900 mm. The width (W) of the top portion 28 is 250 mm, and the width (W0) of the lower portion 29 of the wall balustrade 20 is 340 mm in the Florida type wall balustrade. Further, the height (H2) of the outer wall 34 connected to the concrete web 32 on the outer side of the concrete slab 30 is 900 mm or more.

  FIG. 3 shows a state in which the scaffold holding metal fitting 1 shown in FIG. 1 is attached to the wall balustrade 20 shown in FIG. In the attached scaffold holding metal fitting 1, the top plate 7 is mounted on the top 28 of the wall balustrade 20, and the pan 4 of the adjusting bolt 3 is pressed against the side surface of the inner wall 26 for pressure welding (not shown). Although two scaffold holding metal fittings 1 are drawn in FIG. 3, the length between them is attached at a distance (L = 1.8 m) which is a little shorter than the length (2 m) of the scaffold plate described later. Although FIG. 3 shows an example in which two scaffolding holding fittings 1 are arranged side by side, it is possible to actually install the scaffold holding fittings 1 over a later-described raised rail mounting work section (several hundred meters).

  In FIG. 4, two scaffold plates 40 on which an operator (not shown) rides are installed side by side on the scaffold holding metal fitting 1 shown in FIG. 3, and a side pipe pipe 42 made of a single pipe is inserted into the side column support pipe 11 for fixing the side columns. It is fixed with a screw portion 17. Further, a single pipe pipe 44 for preventing fall is fixed between the two side pillar pipes 42 in parallel with the wall balustrade 20. This fixing can be performed by an orthogonal clamp (not shown). Further, after the single pipe pipe 44 is attached, the fall prevention mesh sheet 46 is fixed to the single pipe pipe 44 so that the falling objects do not drop from the scaffolding plate 40 to the ground below. In these mounting operations, the worker mounts the pipes 42, 44 and the seat 46 on the scaffolding plate 40, but the scaffolding plate 40 is mounted on the scaffolding holding fitting 1 by the worker who is on the road side of the inner wall 26. Since the scaffolding support plate 10 is within the reachable range (H3 = about 300 mm), the scaffolding support plate 10 can be manually installed.

  FIG. 5 shows the positional relationship between the scaffolding holding metal fitting 1 fixed to the wall balustrade 20 and the raised balustrade 50 on which the worker performs the mounting work. The length A (360 mm) of the back plate 5 provided with the adjusting bolt 3, the equilateral width B of the top plate 7 and the hanging plate B = 50 mm, the height C (about 300 mm) of the upper horizontal fence body 52 provided in the raised height column 50, and the raised height The height D (about 110 mm) of the lower horizontal fence 54 provided on the balustrade 50, the height E to the scaffolding plate 40 = about 300 mm, the load support of the outer wall 34 that supports the weight of the worker and the weight of the scaffold holding metal fitting 1, etc. It is configured with a length F (235 mm) and a distance G (about 590 mm) to the side column pipe that acts as the most advanced moment. These structural dimensions are such that the weight of the operator and other structures can sufficiently withstand the suspension plate 9 even if it acts. For the worker, a workable width (two scaffolding board mounting width: about 500 mm) that is safe and suitable for mounting the raised balustrade, and a height (N: 1 m) for ensuring work safety , The upper end height (about 600 mm) of the raised balustrade that secures the work is secured.

  FIG. 6 shows an intermediate step of removing the side pillar pipes 42 and the scaffolding plate 40 after the work of attaching the raised railing 50 to the wall railing 20. Although the scaffolding plate 40 has already been removed in this figure, the worker on the roadway side of the inner wall 26 reaches out to perform this withdrawal work, just as the worker did it manually at the time of installation. The scaffold holding metal fitting 1 from which the side pillar pipe 42 and the scaffold plate 40 have been removed cannot be moved in the same manner as when it is attached due to the obstruction by the raised rail 50, but the lower horizontal fence 54 and the two posts 56 of the raised rail 50. It can be removed by passing through a gap of a space 60 formed by the top 28 of the wall balustrade 20.

  This removal is possible when the scaffolding holding fixture 1 is smaller than the size of the gap 60 formed by the raised rail 50. In the removal procedure, first, the scaffold holding fixture 1 is rotated 90 degrees about the axis of the top plate 7. This rotation is possible because the space between the lower horizontal fence 54 of the raised rail 50 and the top 28 of the wall rail 20 is wider than the plate width 50 mm of the top plate 7. Next, the worker immediately moves the scaffold holding fixture 1 to the inner wall 26 side after the rotation. Therefore, the center of gravity of the scaffold holding metal fitting 1 (approximately in the vicinity of the joint between the suspension plate 9 and the scaffold support plate 10) is placed on the top 28 of the wall balustrade 20, so that the burden on the operator is light. Furthermore, since the worker pulls out the scaffolding support plate 10 portion from the gap of the space 60 toward the inner wall 26 side, the scaffold holding metal fitting 1 can be easily recovered. This withdrawal becomes possible when the length of the suspension plate 9 of the scaffolding holding metal fitting 1 is shorter than the space (L2) between the columns 56 of the raised rail 50. In the embodiment shown in FIG. 6, the distance between the pillars 56 is about 2 m, which is sufficiently longer than the length K (about 535 mm) of the suspension plate 9, so that this withdrawal is possible.

  FIG. 7 shows a completed state of the raised height column 50 after the removal of the scaffold holding metal fitting 1 is completed. To apply the scaffold holding metal fitting 1 of the present invention, the lower horizontal fence body 54 and two columns 56 of the raised height rail 50 are applied. It is necessary that the space 60 formed by the above and the top 28 of the wall balustrade 20 is larger than the size of the scaffold holding metal fitting 1. The stable use location of the scaffolding holding metal fitting 1 is suitable for a structural road having an outer wall of a balustrade according to the Road Construction Ordinance of the Ministry of Land, Infrastructure, Transport and Tourism, for example, a structure with only an undercover with a small outer wall height. It does not apply to the body.

  The scaffold holding metal fitting of the present invention has a structure in which one side of an equilateral angle-shaped steel plate is welded, but the invention is not limited to this equilateral angle-shaped steel plate. For example, when a thickness of 2 to 3 mm is used for a lip groove or a light-weight channel steel having a U-shaped cross section, a double-sided welded structure is possible, and a lightweight scaffold holding metal fitting that can be carried by a single worker. Can be provided. Further, although the steel plate material used in the present invention is SS400 defined by JISG3101, the material is not limited to this material. For example, it is possible to provide a scaffold holding metal fitting having improved welding reliability by using a rolled steel material for welding structure (JIS G3106: SM material) having better weldability.

  INDUSTRIAL APPLICABILITY The present invention is used in the construction of mounting elevated railings for wall railings installed on viaducts, elevated roads, highways, and motorways for automobiles.

1 Scaffolding retaining bracket 3 Adjustment bolt 4 Sauce 5 Back plate 7 Top plate 9 Hanging plate 10 Scaffolding support plate 11 Side pillar support pipe 12 Welding plate for back plate 13 Welding plate for hanging plate 15 Scaffolding reinforcement plate 17 Side pillar fixing screw part 18 , 19 Rubber 20 Wall balustrade 22 Floor slab 26 Inner wall 28 Top 30 Concrete slab 34 Outer wall 40 Scaffolding plate 42 Single pipe pipe side pillar pipe 44 Single pipe pipe 46 for fall prevention Mesh sheet 50 for fall prevention High rise column 52 Upper horizontal fence 54 Lower raised rail 56 Lower horizontal rail 60 Pillar 60 Raised space Space between raised rails

Claims (3)

In a balustrade-mounted scaffold that can be attached to and removed from the wall balustrade that forms the side of the road where vehicles or pedestrians pass,
With respect to the inner wall of the wall balustrade facing the side of the vehicle or pedestrians, a back plate member holding an adjusting bolt for pressing against the inner wall and extending downward,
A top plate member that is joined at a right angle to the back plate member and press-contacts the top part of the wall balustrade,
A suspension plate member that is joined at a right angle to the top plate member and that presses the outer wall and extends downward with respect to the outer wall of the wall balustrade;
A scaffolding support member that is joined at a right angle to the hanging plate member and the joining is at an intermediate position in the length of the hanging plate member;
A side pillar support pipe located at the tip of the scaffold support member and joined at a right angle to the scaffold support member;
Equipped with
A balustrade-attached scaffolding characterized in that the back plate member, the top plate member, the suspension plate member, the scaffold support member, and the side pillar support pipe are fixedly attached to the wall balustrade.
In order to mount a balustrade-mounting type scaffolding board that can be attached to and removed from a wall balustrade forming a side surface of a road through which vehicles or pedestrians pass, in a scaffolding holding metal fitting detachable to the wall balustrade,
With respect to the inner wall of the wall balustrade facing the side of the vehicle or pedestrians, a back plate member holding an adjusting bolt for pressing against the inner wall and extending downward,
A top plate member for joining at a right angle to the back plate member and for press-contacting the top part of the wall balustrade,
A hanging plate member that is joined to the top plate member at a right angle and that is pressed against the outer wall of the wall balustrade and that extends downwardly,
A scaffolding support member that is joined at a right angle to the hanging plate member and the joining is at an intermediate position in the length of the hanging plate member;
A side pillar support pipe located at the tip of the scaffold support member and joined at a right angle to the scaffold support member;
Scaffolding holding metal fittings characterized by having.
The raised balustrade, which is stacked and fixed on the top of the wall balustrade that forms the side of the road through which vehicles or pedestrians pass, is a horizontal rail supported by at least two columns fixed on the upper surface of the top in parallel with the top. And there is a space formed by the side fence and the two columns,
further,
With respect to the inner wall of the wall balustrade facing the side of the vehicle or pedestrians, a back plate member holding an adjusting bolt for pressing against the inner wall and extending downward,
A top plate member that is joined at a right angle to the back plate member and press-contacts the top part of the wall balustrade,
A suspension plate member that is joined at a right angle to the top plate member and that presses the outer wall and extends downward with respect to the outer wall of the wall balustrade;
A scaffolding support member that is joined at a right angle to the hanging plate member and the joining is at an intermediate position in the length of the hanging plate member;
A side pillar support pipe located at the tip of the scaffold support member and joined at a right angle to the scaffold support member;
In a scaffolding retainer for a balustrade-mounted scaffold with
Even after the scaffolding retainer releases the pressing of the adjusting bolt against the inner wall and passes through the space, the back plate member, the top plate member, the suspension plate member, the scaffold support member, and the side. A scaffolding retainer for a balustrade-mounted scaffold, characterized in that it is maintained in a state of being joined to the pillar support pipe.