JP6905768B1 - Road protection gantry - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective gantry for a road capable of surely preventing the occurrence of a disaster due to an article such as a material falling from a high-altitude work area such as a building construction site to a road area close to the area. .. SOLUTION: A road protection gantry 1A has a base 3 and a support 4 erected on the base, respectively, and is spaced in the length direction on both sides of a road area R close to an aerial work area S. It is provided with a plurality of support legs 2 arranged above the road area and a protective surface portion 5 arranged above the road area and supported by the plurality of support legs so as to receive articles dropped from the aerial work platform. .. The protective surface portion is connected to the upper ends of the pair of support legs facing each other in the width direction of the road region, and is arranged in parallel with a plurality of horizontal members 6 at intervals in the length direction of the road region. , A plurality of girders 7 which are handed over over a plurality of horizontal members and arranged in parallel at intervals in the width direction of the road area, and a face material 8 which is attached to a plurality of girders. ing. [Selection diagram] Fig. 1

Description

According to the present invention, in a road area close to an aerial work area such as a building construction site or a large-scale renovation work site, the road area is temporarily provided so as to cover the road area from above, and the aerial work area is transferred to the road area. Related to road protection gantry to prevent the occurrence of disasters due to the fall of goods such as materials.

For example, in the case of building construction work or large-scale renovation construction work, in order to avoid the risk of materials and other items falling from the temporary scaffolding installed around the outer wall of the building and hitting pedestrians, etc., the temporary scaffolding Conventionally, a curing material made of a mesh sheet or the like is stretched on the outer side surface, and a morning glory device for receiving a falling object is installed at a predetermined height (for example, Patent Document 1 below). reference).

Further, for example, as disclosed in Patent Document 2 below, it is also known that a protective gantry is installed so as to cover a sidewalk close to a building, and a temporary scaffold is installed on the protective gantry.

Japanese Patent No. 5999539 Japanese Unexamined Patent Publication No. 9-41655

However, there may be cases where the curing material or morning glory device installed on the outer surface of the temporary scaffolding cannot prevent the materials from falling, and by any chance the fallen materials may be walking on the road near the temporary scaffolding. There was a risk of a major accident if it hit a person.
In addition, the protective gantry installed below the temporary scaffolding can ensure the safety of pedestrians passing through it, but prevent materials, etc. that have fallen outside the temporary scaffolding from hitting vehicles and pedestrians. I couldn't.

The present invention has been made in view of the above problems, and causes a disaster caused by a fall of an article such as a material from a high-altitude work area such as a building construction site to a road area close to the same area. The purpose is to provide a protective gantry for roads that can be reliably prevented.

The present invention comprises the following aspects in order to achieve the above object.
In specifying the present invention, the "road area" includes all or a part of a road having a plurality of sections such as a sidewalk, a roadway (in the case of a roadway having two or more lanes, each lane), and a bicycle road. In addition to this, it may refer to the entire road that does not have a section (including motorways, pedestrian roads, and bicycle roads).

1) A plurality of supports having a base and columns erected on the base, respectively, and arranged at intervals in the length direction on both sides or one side of a road area close to an aerial work area. With the legs
A road protection gantry that is located above the road area and has a protective surface that is supported by multiple support legs to receive articles that have fallen from the aerial work area.

2) A plurality of support legs are arranged on both sides of the road area close to the aerial work area at intervals in the length direction.
A plurality of horizontal members in which the protective surface portions are connected to the upper ends of paired support legs facing each other in the width direction of the road area and are arranged in parallel at intervals in the length direction of the road area. And a plurality of girders that are straddled over a plurality of horizontal members and arranged in parallel at intervals in the width direction of the road area, and a face material that is attached to the plurality of girders. The road protection gantry of 1) above.

3) A plurality of support legs are arranged on both sides of the road area close to the aerial work area at intervals in the length direction.
A plurality of horizontal members in which the protective surface portions are connected to the upper ends of paired support legs facing each other in the width direction of the road region and are arranged in parallel at intervals in the length direction of the road region. 1) For roads, which has a square frame and a face material attached to the square frame, and has a plurality of panel units that are held across adjacent horizontal members. Protective gantry.

4) Each of the horizontal members is composed of two horizontal member divisions in which one ends are hinged to each other, and the upper end of the column is hinged to the other end of each horizontal member division. 2) or 3) road protection gantry.

5) A plurality of support legs are arranged on one side of the road area close to the aerial work area at intervals in the length direction.
Protective surfaces are provided so as to project from the upper end of each support leg toward at least one of both sides in the width direction of the road area, and are arranged in parallel at intervals in the length direction of the road area. A plurality of girders, a plurality of girders that are straddled over the plurality of overhangs and arranged in parallel at intervals in the width direction of the road area, and a plurality of girders. The road protection gantry of 1) above, which is equipped with a face material that is stopped.

6) A plurality of support legs are arranged on one side of the road area close to the aerial work area at intervals in the length direction.
Protective surfaces are provided so as to project from the upper end of each support leg toward at least one of both sides in the width direction of the road area, and are arranged in parallel at intervals in the length direction of the road area. It is provided with a plurality of overhanging materials and a plurality of panel units each having a square frame and a face material fixed to the square frame and being handed over across adjacent overhanging materials. , Road protection gantry in 1) above.

7) A plurality of support legs are arranged on both sides of the road area close to the aerial work area at intervals in the length direction.
A plurality of horizontal members in which the protective surface portions are connected to the upper ends of paired support legs facing each other in the width direction of the road area and arranged in parallel at intervals in the length direction of the road area. And a plurality of overhanging materials provided so as to project from the upper end of each support leg arranged on at least one side of both sides of the road area toward the side opposite to the horizontal member. A plurality of girders and a plurality of girders that are straddled over each of a plurality of horizontal members and a plurality of overhangs and arranged in parallel at intervals in the width direction of the road area, and a plurality of girders. The road protection gantry of 1) above, which is equipped with the facing material.

8) A plurality of support legs are arranged on both sides of the road area close to the aerial work area at intervals in the length direction.
A plurality of horizontal members in which the protective surface portions are connected to the upper ends of the pair of support legs facing each other in the width direction of the road region and are arranged in parallel at intervals in the length direction of the road region. And a plurality of overhanging materials provided so as to project from the upper end of each support leg arranged on at least one side of both sides of the road area toward the side opposite to the horizontal member. The above-mentioned, which has a square frame and a face material fixed to the square frame, and has a plurality of panel units which are held over the adjacent horizontal members and the adjacent overhanging materials, respectively. 1) Road protection gantry.

9) A road protection gantry according to any one of 2) to 8) above, wherein the face material is made of a mesh material having translucency and ventilation.

10) A road protection gantry according to any one of 1) to 9) above, in which an auxiliary guard fence is erected on at least one side edge of both side edges of the protective surface portion.

According to the road protection gantry in 1) above, the upper part of the road area close to the high-altitude work area such as the construction site of a building is covered with the protective surface portion supported by the support legs, so that the height is high. Even when an article such as a material falls from the work area toward the road area, the article is surely prevented from hitting a vehicle or a pedestrian passing through the road area, and is disclosed by the above-mentioned Patent Documents 1, 2 and the like. Compared with the conventional technology, the safety is significantly improved.

According to the road protection frame of 2) above, the support legs are arranged on both sides of the road area, and the protective surface supported by the support legs is composed of a horizontal member, a girder, and a face material. , Transport to the site, assembly / disassembly at the site, removal from the site, etc. can be performed easily and quickly.

According to the road protection frame of 3) above, the support legs are arranged on both sides of the road area, and the protective surface portion supported by the support legs is a panel unit composed of a horizontal member, a square frame and a face material. Since it is composed of, it is possible to carry out transportation to the site, assembly / disassembly at the site, removal from the site, etc. extremely easily and quickly.

According to the road protection gantry of 4) above, in the road protection gantry of 2) above, the two horizontal lumber split bodies and the two columns are integrated by hinge coupling, so that these are integrated during transportation and storage. The components can be folded into a compact form that does not take up space, and these components can be unfolded and installed at the site during assembly, while these components can be folded again during disassembly. Excellent assembly / disassembly workability can be obtained.

According to the road protection frame of 5) above, the support legs are arranged on one side of the road area, and the protective surface supported by the support legs is composed of overhanging materials, girders and face materials. Therefore, it is possible to easily and quickly carry out transportation to the site, assembly / disassembly at the site, removal from the site, and the like.
Further, according to the road protection frame of 5) above, the component configuration is relatively simple and the cost can be suppressed.
The protective gantry can be suitably used for a relatively narrow road area such as a sidewalk.

According to the road protection frame of 6) above, the support legs are arranged on one side of the road area, and the protective surface supported by the support legs is a panel composed of an overhang material, a square frame and a face material. Since it is composed of a unit, it can be transported to the site, assembled / disassembled at the site, removed from the site, etc. extremely easily and quickly.
The protective gantry can be suitably used for a relatively narrow road area such as a sidewalk.

According to the road protection frame of 7) above, the support legs are arranged on both sides of the road area, and the protective surface portion supported by the support legs is composed of a horizontal member, an overhanging material, a girder material and a face material. Therefore, it is possible to easily and quickly carry out transportation to the site, assembly / disassembly at the site, removal from the site, and the like.
The protective gantry can be suitably used for a relatively wide road area including, for example, a sidewalk and a roadway having two or more lanes.

According to the road protection gantry of 8) above, the support legs are arranged on both sides of the road area, and the protective surfaces supported by the support legs are the horizontal member, the overhanging material, the square frame and the surface. Since it is composed of a panel unit made of wood, it can be transported to the site, assembled / disassembled at the site, removed from the site, etc. extremely easily and quickly.
The protective gantry can be suitably used for a relatively wide road area including, for example, a sidewalk and a roadway having two or more lanes.

According to the road protection frame of 9) above, since the face material is made of a mesh material having translucency and ventilation, it is prevented that the road area is darkened, and the face material is removed or damaged by the wind pressure. It is avoided.

According to the road protection gantry in 10) above, the auxiliary guard fence prevents articles such as materials received by the protective surface from bouncing back and falling to the outside of the protective surface, thus further improving safety. ..

It is a front view of the road protection gantry which concerns on 1st Embodiment of this invention. It is a partial plan view of the protection gantry. It is a partial cross-sectional view along the line III-III of FIG. The connection portion between the base and the support column in the protective gantry is shown, (a) is a horizontal cross-sectional view, and (b) is a vertical cross-sectional view along the line bb of (a). It shows another aspect of the connecting part between the base and the column in the protection gantry, (a) is a horizontal sectional view, and (b) is a vertical sectional view along line bb of (a). be. (A) is an enlarged front view showing the VI portion of FIG. 1, and (b) is a horizontal cross-sectional view taken along line bb of (a). (A) is an enlarged view of part VII of FIG. 1, (b) is a vertical cross-sectional view taken along line bb of (a), and (c) is line cc of (b). It is a horizontal cross-sectional view along. The connection structure of the horizontal member and the girder member in the protective gantry is shown, (a) is a front view showing an enlarged part VIII of FIG. 1, and (b) is b- of (a). It is a vertical sectional view along line b. It shows another aspect of the connecting structure of the horizontal member and the girder member in the protective gantry, (a) is a figure corresponding to FIG. 8 (a), and (b) is b- of (a). It is a vertical sectional view along line b. (A) is an enlarged front view showing part X of FIG. 1, (b) is a horizontal cross-sectional view taken along line bb of (a), and (c) is cc of (a). It is a vertical sectional view along a line. (A) is an enlarged front view showing the auxiliary guard fence and the connecting structure of the auxiliary guard fence and the horizontal member, (b) is a horizontal sectional view along the line bb of (a), and (c). Is a horizontal cross-sectional view taken along the line cc of (a). It shows another aspect of the protection surface part in the protection gantry, (a) is a partially enlarged plan view, and (b) is a vertical cross-sectional view with the middle omitted along the line bb of (a). It is a vertical cross-sectional view which omitted in the middle which shows further another aspect of the protection surface part in the protection gantry. It is a front view which shows the deformed example of the horizontal member and the support | support in the protection gantry, and shows the state which the horizontal material and the support are folded. It is a front view which shows the state in which the horizontal lumber and the support are unfolded. Another modification of the horizontal member and the support column in the protective gantry is shown, and is a front view showing a state in which the horizontal member and the support column are folded. It is a front view which shows the state in which the horizontal lumber and the support are unfolded. It is a front view of the road protection gantry which concerns on 2nd Embodiment of this invention. (A) is an enlarged view of the XIX portion of FIG. 18, and (b) is a horizontal cross-sectional view taken along line bb of (a). FIG. 18A is an enlarged view of portion XX of FIG. 18, and FIG. 18B is a horizontal cross-sectional view taken along line bb of FIG. 18A. It is a front view of the road protection gantry which concerns on 3rd Embodiment of this invention. (A) is an enlarged view of the XXII portion of FIG. 21, and (b) is a horizontal cross-sectional view taken along the line bb of (a). It is a figure which shows the XXIII part of FIG. 21 enlarged. It is a front view of the road protection gantry which concerns on 4th Embodiment of this invention. It is a front view of the road protection gantry which concerns on 5th Embodiment of this invention.

Next, an embodiment of the road protection gantry according to the present invention will be described below with reference to FIGS. 1 to 25.
In the following description, "left and right" refers to each of the left and right of FIGS. 1, 14 to 18, 21, 21, 24, and 25, and "front" refers to the bottom of FIG. 2 and the right of FIG. The term "rear" means the upper part of FIG. 2 and the left side of FIG.

[First Embodiment]
1 to 13 show a road protection gantry according to the first embodiment of the present invention.
The road protection gantry (1A) of this embodiment is, for example, a road area (R1) (more) close to an aerial work platform (S) consisting of temporary scaffolding installed along the outer wall of a building under large-scale renovation work. Specifically, the purpose is to protect a vehicle (C) or the like passing through a road with a total of four lanes from articles such as materials falling from the aerial work platform (S). On the outer surface of the temporary scaffold (S), the morning glory device (M) is installed at a plurality of predetermined height positions so as to project toward the road area (R1) side.
As shown in FIGS. 1 to 3, the protective gantry (1A) includes support legs (2) arranged on the left and right sides of the road area (R1) at intervals in the front-rear length direction. It is provided with a protective surface (5) that is located above the road area (R1) and is supported by multiple support legs (2) to receive articles that have fallen from the aerial work platform (S). .. Therefore, even if an article such as a material falls from the aerial work platform (S), the dropped article is received by the protective surface portion (5), so that the vehicle (C) passing through the road area (R1), etc. The occurrence of disasters such as hitting goods is surely avoided.
Each support leg (2) includes a base (3) and a support (4) erected on the base (3).
The protective surface portion (5) is attached to the upper end of the pair of support legs (2) facing each other in the left-right width direction of the road region (R1), and is spaced in the front-rear length direction of the road region (R1). A plurality of horizontal members (6) arranged in parallel, and a plurality of horizontal members (6) are straddled and held in parallel at intervals in the width direction of the road area (R1). It includes a plurality of girders (7) arranged and a face material (8) attached to the plurality of girders (7).
Auxiliary guard fences (9) are erected on the left and right sides of the protective surface (5).
Although not shown, when the width of the road area is wide, for example, a plurality of support legs (2) are arranged at intervals in the front-rear length direction in the median strip, and these support legs ( The intermediate portion of the length of the horizontal member (6) may be supported by 2).

FIG. 4 shows one aspect of the detailed structure of the lower part of the support leg (2), and FIG. 5 shows another aspect of the structure.
In FIGS. 4 and 5, the base (3) of the support leg (2) has, for example, a block-shaped base body (31). The base body (31) can be composed of, for example, a concrete block. A bottomed hole (311) having a circular cross section is formed in the center of the upper surface of the base body (31), and the lower part of the support sleeve (32) is fitted into the bottomed hole (311). ing. The bottom surface of the bottom hole (311) is covered with a bottom plate (33). The upper surface of the base body (31) is covered with a top plate (34). The sleeve (32) and the top plate (34) are connected by four triangular connecting plates (35) arranged at equal intervals in the circumferential direction of the sleeve (32).
The strut (4) is made of a metal pipe material such as steel. Then, the support column (4) is erected vertically by inserting the lower end portion of the support column (4) into the sleeve (32) of the base (3).
Pin insertion holes (321) (41) are formed in the sleeve (32) slightly above the top plate (34) and at the lower end of the support column (4) corresponding to the same location so as to match each other. ..
In the case of FIG. 4, a pin holder (361) having a U-shaped cross section is attached to the outside of the pin insertion hole (321) in the sleeve (32), and the pin holder (361) causes the retaining pin (362) with the head plate to be horizontal. It is held so that it can slide in the direction. The retaining pin (362) is urged inward in the radial direction of the sleeve (32) by a spring (363). The tip of the retaining pin (362) is inserted across the pin insertion holes (321) (41) of the sleeve (32) and the support (4) so that the support (4) can be pulled from the sleeve (32). It will not come off and the connected state of the support (4) and the base (3) will be maintained.
In the case of FIG. 5, instead of the fixed type retaining pin shown in FIG. 4, a retaining pin made of a ball lock pin (37) is used. By inserting the ball lock pin (37) across the pin insertion holes (321) (41) of the sleeve (32) and the support column (4), the support column (4) cannot be pulled out from the sleeve (32). The connected state of the support column (4) and the base (3) is maintained.

As shown in FIG. 1, the horizontal member (6) of the protective surface portion (5) is composed of a plurality of horizontal member divided bodies (60) divided in the left-right length direction. The illustrated horizontal member (6) is composed of three horizontal member divided bodies (60), a left side portion, a central portion, and a right side portion.
With reference to FIGS. 1 and 6, each horizontal lumber split body (60) is provided on two upper and lower horizontal lumbers (601) and both horizontal lumbers (601) at predetermined intervals in the left-right length direction. Between the plurality of vertical timbers (602) that were handed over and the multiple vertical timbers (602) that were diagonally handed over to both horizontal horizontal timbers (601) between adjacent vertical timbers (602). It has. These structural materials (601) (602) (603) can be formed of a hollow material made of a metal such as steel.
At both ends of the upper and lower horizontal lumbers (601), connecting ends (604) made of two front and rear vertical plate pieces having pin insertion holes (604a) are provided in an extended shape. Then, the connecting ends (604) of the two horizontal member split bodies (60) adjacent to each other on the left and right are combined so as to fit each other, and the pin insertion holes (604a) of these connecting ends (604) are inserted, for example. By inserting a connecting pin (605) made of a ball lock pin, both horizontal lumber split bodies (60) are connected and integrated. A vertical plate material (606) is provided between the connecting ends (604) of the upper and lower horizontal horizontal members (601), and the vertical plate materials (606) of the two adjacent horizontal member divided bodies (60) are connected to each other. When they come into contact with each other, the connecting ends (604) that are fitted to each other are positioned, and these pin insertion holes (604a) are aligned with each other.
The connection structure between the horizontal member divided bodies is not limited to the illustrated mode, and the two may be connected to each other by, for example, bolts and nuts.

As shown in FIG. 7, the lower portions of the auxiliary guard fence mounting columns (607) are connected and fixed to both ends of the horizontal member (6). More specifically, connecting brackets (608) having a substantially U-shaped cross section having two front and rear vertical plate portions with pin insertion holes (608a) are attached to the upper and lower parts of the lower part of the column (607). Has been done. Then, both are combined so that the bracket (608) fits on the outside of one connecting end (604) of the horizontal member split body (60), and these pin insertion holes (604a) (608a) are formed. For example, by inserting a connecting pin (605) made of a ball lock pin, the lower part of the auxiliary guard rail mounting support (607) is connected and fixed to the end of the horizontal lumber split body (60) located at each of the left and right ends. The upper part of the support (607) is erected above the horizontal member (6).
A vertical plate material (606) that is brought into contact with the vertical plate material (606) of the horizontal member split body (60) is provided between the upper and lower two connecting brackets (608) of the auxiliary guard fence mounting column (607). ing.

As shown in FIG. 8, the girder material (7) is, for example, a single circular pipe material made of a metal such as steel, or a plurality of metal circular pipe materials connected in series by an appropriate connecting means (not shown). Can be configured by.
The horizontal member (6) and the girder member (7) can be connected by using, for example, a double clamp (C1) such as a rounded corner clamp as shown in FIG. Specifically, one clamp portion (C11) of the double clamp (C1) fastens the horizontal horizontal member (601) on the upper side of the horizontal member split body (60), and the other of the double clamps (C1). It may be fastened to the girder lumber (7) with the clamp part (C12) of.
Further, as shown in FIG. 9, a single clamp (C2) is attached to the upper surface of the horizontal horizontal member (601) on the upper side of the horizontal member split body (60), and the girder member (7) is attached by the clamp (C2). By fastening, the horizontal member (6) and the girder member (7) may be connected.

The face material (8) is preferably composed of a mesh material having translucency and ventilation. As the mesh material, a wire mesh (for example, a diamond-shaped wire mesh specified in JIS G3552 or a wire mesh specified in JIS G3554) is used, and a resin net or mesh sheet can also be used. Alternatively, a plurality of types of mesh materials (for example, a wire mesh and a resin net) may be used in combination. The material of the face material (8) may be a material other than the mesh material, and for example, a translucent sheet or the like can be used.
The face material (8) can be attached to the girder material (7) by, for example, bundling with a wire, a rope, or the like (not shown), but other attachment methods may be used.

As shown in detail in FIG. 10, the support column (4) of the support leg portion (2) and the horizontal member (6) of the protective surface portion (5) are connected via a reinforcing bracket (10). This reinforcing bracket (10) is composed of a vertical lumber (101), an upper horizontal lumber (102) and an oblique lumber (103) joined to form a right triangle, and an upper end portion and an oblique lumber of the upper horizontal lumber (102). It has an intermediate diagonal lumber (104) that is passed between the length and the intermediate portion of (103). Of course, it is also possible to connect the support column (4) and the horizontal member (6) by means other than the reinforcing bracket (10).
At the upper part of the support column (4), two vertical connecting plate portions (42), which are vertically projected inward in the left-right direction and have pin insertion holes (42a), are provided at two positions above and below the support column (4). On the other hand, before and after having pin insertion holes (105a) matching the pin insertion holes (42a) of the connecting plate portion (42) at the upper and lower ends of the inner side surface of the vertical member (101) in the reinforcing bracket (10) in the left-right direction. Two vertical connecting plate portions (105) are provided respectively. Then, the vertical member (101) of the reinforcing bracket (10) and the upper and lower two sets of front and rear connecting plate portions (105) are fitted between the upper and lower two sets of front and rear connecting plate portions (42) at the upper part of the support column (4). By inserting, for example, a connecting pin (106) made of a ball lock pin into the pin insertion holes (42a) (105a) of these connecting plate portions (42) (105), the auxiliary bracket (10) becomes a support (4). ) Is connected and fixed at the top.
Further, at the inner end of the upper horizontal member (102) in the reinforcing bracket (10) in the left-right direction, two front and rear vertical connecting plate portions (107) having pin insertion holes (107a) are provided so as to project upward. Has been done. On the other hand, a pin insertion hole (609a) that matches the pin insertion hole (107a) of the connecting plate portion (107) at a required length position on the upper surface of the lower horizontal member in the horizontal member divided body located at each of the left and right ends. Two front and rear vertical connecting plate portions (609) having the above are provided respectively. Then, between the front and rear connecting plate portions (107) of the upper horizontal member (102) of the reinforcing bracket (10), the horizontal horizontal member (601) and the front and rear connecting plate portion (609) on the lower side of the horizontal member split body (60). ) Is fitted, and a connecting pin (108) made of, for example, a ball lock pin is inserted into the pin insertion holes (107a) (609a) of these connecting plate portions (107) (609), whereby the auxiliary bracket (107) (609) is inserted. 10) is connected and fixed to the upper part of the support (4).

As shown in FIG. 3, the auxiliary guard fence (9) is composed of, for example, a plurality of fence units (90) composed of a square frame (91) and a face material (92) attached to the square frame (91). can do. The square frame (91) can be formed by assembling a frame material made of metal such as steel into a square. As the face material (92), a mesh material similar to the face material (8) of the protective surface portion (5), that is, a wire mesh, a resin net sheet, or the like is preferably used.
With reference to FIGS. 3 and 11, each fence unit body (90) is handed over to a rising portion of auxiliary guard rail mounting columns (607) adjacent to each other in the front-rear direction. More specifically, a plurality of pin fixing portions (607a) made of vertical plate pieces are provided at intervals in the vertical direction inside the rising portion of the auxiliary guard fence mounting support (607) in the left-right direction, and each pin fixing portion is provided. Two fence unit mounting pins (610), for example, bent pins, are fixed to (607a) side by side in the front-rear direction so as to project inward in the left-right direction. On the other hand, a plurality of pin insertion holes (91a) are formed in the left and right side frame portions of the square frame (91) of the fence unit body (90) at intervals at the top and bottom. Then, the fence unit body mounting pin (610) of the pin fixing plate (607a) of the auxiliary guard fence mounting column (607) adjacent to the front and rear is inserted into the pin insertion holes (91a) of the left and right frame portions of the fence unit body (90). ), The fence unit body (90) is handed over between the rising parts of both columns (607).
It should be noted that the auxiliary guard fence may be appropriately provided at a necessary place and may be omitted.

12 and 13 show another aspect of the protective surface portion.
The protective surface portions (5X) (5Y) shown in these figures include a plurality of horizontal members (6) similar to those used for the protective surface portion (5) described above, and a square frame (11A) and a square frame (11A). It is equipped with a plurality of panel units (11) having face materials (11B) attached to 11A) and being handed over to adjacent horizontal members (6) in the front-rear direction.
The square frame (11A) of the panel unit (11) is made of metal having a vertical wall portion (111a) extending in the left-right direction and a horizontal wall portion (111b) extending inward in the front-rear direction from the upper edge of the vertical wall portion (111a). A pair of front and rear side frame members (111) made of the angle material of the above and vertical wall portions (111a) of the side frame members (111) made of, for example, a metal circular tube material are fixed at predetermined intervals in the left-right direction. It is provided with a plurality of connecting frame members (112). Further, as the face material (11B) of the panel unit (11), a mesh material made of a wire mesh, a net sheet made of resin, or the like is preferably used as in the face material (8) of the protective surface portion (5) described above. Be done. The face material (11B) is stretched over the lower surface of the horizontal wall portion (111b) of the frame members (111) on both sides. The length of the panel unit (11) in the left-right direction may be appropriately set in consideration of handleability and the like.

In the case of the protective surface portion (5X) shown in FIG. 12, a horizontal support plate (611) extending in the left-right direction is a horizontal horizontal member (601) on the lower surface of the horizontal horizontal member (601) on the upper side of the horizontal member split body (60). ) Is attached so as to overhang on both front and back sides. If necessary, a non-slip layer (611a) made of, for example, a rubber sheet may be formed on the upper surface of the support plate (611). Further, mounting pins (612) made of, for example, bent pins are mounted vertically upward on the upper surface of the horizontal horizontal member (601) on the upper side of the horizontal member split body (60) at intervals in the left-right length direction. ing. Then, each panel unit (11) is placed over the support plate (611) of the horizontal members (6) adjacent to each other in the front-rear direction, and a plurality of holding bars (113) extending in the front-rear direction are prepared. By inserting the mounting pins (612) of both horizontal members (6) into the pin insertion holes (not shown) formed at both ends of the holding bar (113), the panel unit (11) is pressed by the holding bar. It is pressed from above by (612). Therefore, according to the protective surface portion (5X) of this aspect, the assembly / disassembly work can be performed extremely easily and quickly.

Further, in the protective surface portion (5Y) shown in FIG. 13, a support plate (611) like the protective surface portion (5X) shown in FIG. 12 is not provided on each horizontal member (6). Horizontal erection plates (114) extending in the front-rear direction are attached to a plurality of required locations on the upper surface of each panel unit (11) in the left-right length direction so that both ends thereof protrude from the panel unit (11). There is. Pin insertion holes (not shown) are formed at both ends of the erection plate (114). Then, the panel unit (11) is arranged between the horizontal members (6) adjacent to each other in the front-rear direction, and the mounting pins of both horizontal members (6) are placed in the panel insertion holes at both ends of the erection plate (114). By inserting (612), the panel unit (11) is erected across both horizontal members (6). Therefore, even with the protective surface portion (5Y) of this aspect, the assembly / disassembly work can be performed extremely easily and quickly.

The structures of the protective surface portions (5X) and (5Y) of the above aspects shown in FIGS. 12 and 13 can be similarly applied to the second to fifth embodiments described later.

14 and 15 show a modified example of the horizontal member and the support column in the protective gantry (1A).
In the case of the illustrated embodiment, each horizontal member (6) is composed of two horizontal member divided bodies (60) in which one ends are hinged to each other, and is attached to the other end of each horizontal member divided body (60). , The upper end of the column (4) is hinged. That is, two cross members (60) and two struts (4) hinged to each other form one foldable and unfoldable unit.
More specifically, in the two horizontal lumber split bodies (60), one ends (inner ends in the left-right direction) of the lower horizontal lumbers (601) are hinged to each other by a hinge or the like. Further, in the two columns (4), the upper end portions thereof are hinged to the other end portion (outer end portion in the left-right direction) of the horizontal horizontal member (601) below the two horizontal member divisions (60). It is hinged by such means.
During storage and transportation, the two horizontal lumber split bodies (60) and the two columns (4) are treated as a unit in a folded state and compact.

As shown in FIG. 14, the unit carried into the installation site is suspended from the suspension jig (J) via the electric chain block (CB). The electric chain block (CB) is hung at the center of the hanging jig (J), and one end of two wire ropes (WR) is attached to the hook at the lower end thereof. These wire ropes (WR) are hung on pulleys (P) provided at the hinge joints between the other ends of the two horizontal member divisions (60), and the other ends of both wire ropes (WR). The part is attached to the lower end of each column (4). Further, one ends of two wire ropes (WR) are attached to the left and right ends of the hanging jig (J), and the other ends of these wire ropes (WR) are in the two horizontal member divisions (60). It is attached to the other end (outer end in the left-right direction) of the upper horizontal cross member (601). Then, after arranging the above unit above the road area to be installed using a crane or the like (not shown), the electric chain block (CB) is operated to lower the unit, and the two horizontal member divisions (60) are horizontal. It is swung so that the two columns (4) are vertically downward. As a result, the two horizontal lumber split bodies (60) and the two columns (4) are in the expanded state, and the lower ends of both columns (4) are inserted into the sleeve (32) of the base (3) and fixed. By doing so, the installation is completed.
Therefore, according to the horizontal member (6) and the support column (4) of the above aspect, excellent assembly / disassembly workability can be obtained.

16 and 17 show another modification of the horizontal timber and the column in the protective gantry (1A).
In the illustrated embodiment, in the two horizontal member divided bodies (60) constituting the horizontal member (6), one ends (inner ends in the left-right direction) of the upper horizontal horizontal members (601) are hinged or the like. Hinged by. Further, in the two columns (4), the upper end portions thereof are hinged to the other end portion (outer end portion in the left-right direction) of the horizontal horizontal member (601) below the two horizontal member divisions (60). It is hinged by such means.
Therefore, even in this embodiment, the two horizontal lumber split bodies (60) and the two columns (4) are treated as a unit in a folded state during storage and transportation. There is.

As shown in FIG. 17, the unit carried into the installation site is suspended by a suspension jig (J) via two electric chain blocks (CB). The two electric chain blocks (CB) are suspended at both ends of the hanging jig (J), and one end of the wire rope (WR) is attached to the hook at the lower end of each. These wire ropes (WR) are attached to the middle length of the lower horizontal timber in the two horizontal timber dividers (60). Further, one end of one wire rope (WR) is attached to the central portion of the hanging jig (J), and the other end of the wire rope (WR) is the upper side of the two horizontal member divisions (60). It is attached to the hinge joint between one end of the horizontal cross member (601). Then, after arranging the above unit above the road area to be installed using a crane or the like (not shown), when the two electric chain blocks (CB) are operated and the unit is lowered, the two horizontal member divisions (60) Is swung so that it is horizontal, and the two columns (4) are swung vertically downward. As a result, the two horizontal lumber split bodies (60) and the two columns (4) are in the expanded state, and the lower ends of both columns (4) are inserted into the sleeve (32) of the base (3) and fixed. By doing so, the installation is completed.
Therefore, excellent assembly / disassembly workability can be obtained even with the horizontal members (6) and columns (4) of the above-described embodiment.

[Second Embodiment]
18 to 20 show a road protection gantry according to a second embodiment of the present invention.
The road protection gantry (1B) of this embodiment also has a road area (R2) close to an aerial work platform (S) consisting of, for example, a temporary scaffold at a building construction site (more specifically, a roadway with a total of two lanes). The purpose is to protect vehicles (C), pedestrians, etc. passing through the aerial work platform (S) side sidewalk from articles such as materials falling from the aerial work platform (S). In the following description, components substantially the same as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
As shown in FIG. 18, the protective gantry (1B) includes support legs (2) arranged on the left and right sides of the roadway in the road area (R2) at intervals in the front-rear length direction, and a road. It is provided with a protective surface (5B) that is located above the area (R2) and is supported by a plurality of support legs (2) so that articles dropped from the aerial work platform (S) can be received.
Each support leg (2) includes a base (3) and a support (4) erected on the base (3).
The protective surface portion (5B) is attached to the upper end of the pair of support legs (2) facing each other in the left-right width direction of the road region (R2), and is spaced in the front-rear length direction of the road region (R2). Multiple horizontal members (6X) arranged in parallel, and horizontal members (6X) from the upper end of each support leg (2) arranged on the left side of the roadway in the road area (R2). Passed over each of a plurality of overhanging materials (12) provided so as to project toward the opposite side (left side), a plurality of horizontal members (6X), and a plurality of overhanging materials (12). A plurality of girders (7) that are stopped and arranged in parallel at intervals in the left-right width direction of the road area (R2), and a face material (8) that is attached to the plurality of girders (7). ) And.
Auxiliary guard fences (9) are erected on the left and right edges of the protective surface (5B).

The horizontal member (6X) of the protective surface portion (5B) is composed of two left and right horizontal member divided bodies (60X).
As shown in FIGS. 18 and 19, each horizontal member division (60X) includes an upper horizontal member (601) and a lower diagonal member (601X) extending diagonally upward toward the tip. Horizontal between a plurality of vertical lumbers (602) that are passed to a horizontal lumber (601) and an oblique lumber (601X) at predetermined intervals in the left-right length direction and adjacent vertical lumbers (602). It is equipped with a plurality of barb (603) diagonally transferred to the horizontal member (601) and the diagonal horizontal member (601X).
At both ends of the horizontal cross member (601) and the diagonal cross member (601X), connecting ends (604) made of two front and rear vertical plate pieces having pin insertion holes (604a) are provided in an extended shape. .. Then, the connecting end portions (604) on the distal end side of the two horizontal member split bodies (60) are combined so as to fit each other, and for example, a ball is inserted into the pin insertion hole (604a) of these connecting end portions (604). By inserting a connecting pin (605) made of a lock pin, both horizontal lumber split bodies (60X) are connected and integrated. A vertical plate material (606) is provided between the connecting ends (604) of the horizontal horizontal member (601) and the diagonal horizontal member (601X), and the vertical plate material (60X) of the two horizontal member divisions (60X) is provided. 606) When they come into contact with each other, the connecting ends (604) that fit each other are positioned, and these pin insertion holes (604a) are aligned.

The overhanging material (12) has the same structure as the horizontal member divided body (60X), and has an upper horizontal horizontal member (121) and an obliquely upward direction toward the tip (inward in the left-right direction). Adjacent to the extending lower diagonal cross member (121X) and multiple vertical members (122) that are passed to the horizontal cross member (121) and the diagonal cross member (121X) at regular intervals in the left-right length direction. Between the matching vertical members (122), a horizontal cross member (121) and a plurality of streaks (123) diagonally transferred to the diagonal cross member (121X) are provided.
At both ends of the horizontal cross member (121) and the diagonal cross member (121X), connecting ends (124) made of two front and rear vertical plate pieces having pin insertion holes (124a) are provided in an extended shape. ..
As in the case of the horizontal member split body (60) of the first embodiment, the diagonal horizontal member (121X) on the lower side of the overhanging material (12) may be replaced with the horizontal horizontal member.

As shown in FIG. 20, long vertical strips (43) are fixed to both left and right sides of the upper part of the support column (4), and pin insertion holes are inserted at the upper and lower ends of these strips (43). Two front and rear vertical connecting plate portions (44) having (44a) are provided in a laterally protruding shape.
Then, the connecting end portion (604) provided at the base end portion of the horizontal horizontal member (601) and the diagonal horizontal member (601X) in the horizontal member split body (60X) is one side of the support column (4) facing them. A connecting pin made of, for example, a ball lock pin is fitted into these pin insertion holes (604a) and (44a) by being fitted with two sets of front and rear connecting plate portions (44) provided in the portion (right portion in FIG. 20). By inserting (605), the base end portion of the horizontal lumber split body (60X) is connected and fixed to the upper part of the support column (4).
Further, the connecting end portion (124) provided at the base end portion of the horizontal cross member (121) and the diagonal cross member (121X) in the overhanging material (12) is the other side portion (4) of the support column (4) facing them. In FIG. 20, it is fitted with two sets of upper and lower connecting plate portions (44) provided on the left side portion), and these pin insertion holes (124a) and (44a) are fitted with connecting pins (605) made of, for example, ball lock pins. ) Is inserted, so that the base end portion of the overhanging material (12) is connected and fixed to the upper part of the support column (4).

As shown by the alternate long and short dash line in FIG. 18, the aerial work platform is located on the side edge (left edge in the figure) of the left and right side edges of the protective surface portion (5B) closer to the aerial work platform (S). An extension portion (13) extending to (S) may be provided, and the tip of the extension portion (13) may be connected to an appropriate location (for example, a support of a temporary scaffold) in the aerial work platform (S).
Alternatively, the tip of the overhanging material (12) on the side closer to the aerial work area (S) (on the left side in the figure) is connected by an appropriate connecting means (for example, a rod for connecting, a pipe material, a wire material, etc.). It may be connected to a predetermined place (for example, a support outside the temporary scaffolding) of the aerial work area (S).
According to the above configuration, the stability of the protective gantry (5B) is further enhanced, and the support legs (2) are more reliably prevented from tilting or falling.

[Third Embodiment]
21 to 23 show a road protection gantry according to a third embodiment of the present invention.
The road protection gantry (1C) of this embodiment also has a road area (R3) close to an aerial work platform (S) consisting of, for example, a temporary scaffold at a building construction site (more specifically, a roadway with a total of four lanes). The purpose is to protect vehicles (C), pedestrians, etc. passing through the aerial work platform (S) side sidewalk from articles such as materials falling from the aerial work platform (S).
As shown in FIG. 21, the protective gantry (1C) includes support legs (2) arranged on the left and right sides of the roadway in the road area (R3) at intervals in the front-rear length direction, and a road. It is provided with a protective surface (5C) that is located above the area (R3) and is supported by a plurality of support legs (2) so that articles dropped from the aerial work platform (S) can be received.
Each support leg (2) includes a base (3) and a support (4) erected on the base (3).
The protective surface portion (5C) is attached to the upper end of the pair of support legs (2) facing each other in the left-right width direction of the road region (R2), and is spaced in the front-rear length direction of the road region (R3). Multiple horizontal members (6Y) arranged in parallel, and horizontal members (6Y) from the upper end of each support leg (2) arranged on the left side of the roadway in the road area (R3). Passed over each of a plurality of overhanging materials (12) provided so as to project toward the opposite side (left side), a plurality of horizontal members (6Y), and a plurality of overhanging materials (12). A plurality of girders (7) that are stopped and arranged in parallel at intervals in the left-right width direction of the road area (R3), and a face material (8) that is attached to the plurality of girders (7). ) And.
Auxiliary guard fences (9) are erected on the left and right edges of the protective surface (5C).

The horizontal member (6Y) of the protective surface portion (5C) is composed of two left and right horizontal member divided bodies (60Y).
As shown in FIGS. 21 and 22, each horizontal member divided body (60Y) has an upper diagonal horizontal member (601Y) extending diagonally upward toward the tip (inward in the left-right direction) and a lower horizontal horizontal member (601Y). A material (601), a plurality of vertical materials (602) transferred to a diagonal horizontal material (601Y) and a horizontal horizontal material (601) at predetermined intervals in the left-right length direction, and adjacent vertical materials (602). Between each other, a diagonal cross member (601Y) and a plurality of streak crossing members (603) diagonally transferred to the horizontal cross member (601) are provided. That is, the horizontal member (6Y) of this embodiment has a substantially triangular shape in which the central portion of the left-right width is the highest when viewed from the front. Therefore, the face material (8) attached to the girder (7) erected on the horizontal member (6Y) has a gable roof shape.
The connecting structure of the two lumber split bodies (60Y) is substantially the same as that of the second embodiment.

As shown in FIG. 23, the base end portion of the horizontal lumber split body (60Y) is connected and fixed to the upper part of the support column (4) by using the same connecting bracket (10) as in the first embodiment. ..
On one side (left side in FIG. 23) facing the base end of the overhanging material (12) at the top of the strut (4), a vertically long strip (43) has a strip (43) that is longer than the strut (4) at the upper end. It is fixed so as to protrude upward. The upper and lower ends of one of the two sides of the strip (43) on the overhanging material (12) side (left side in FIG. 23) and the upper end and height of the other side (right side in FIG. 23). Two front and rear vertical connecting plate portions (44) having pin insertion holes (44a) are provided in a laterally protruding shape in each of the intermediate portions.
Then, the connecting end portion (604) provided at the base end portion of the diagonal cross member (601Y) and the horizontal cross member (601) in the horizontal member split body (60Y) is on the side of the strip (43) facing them. A connecting pin made of, for example, a ball lock pin, is fitted into the upper and lower two sets of front and rear connecting plate portions (44) provided in the portion (the right portion in FIG. 23), and these pin insertion holes (604a) and (44a) are inserted. By inserting (605), the base end portion of the horizontal lumber split body (60Y) is connected to the upper part of the support column (4).
Further, the connecting end portion (124) provided at the base end portion of the horizontal cross member (121) and the diagonal cross member (121X) in the overhanging material (12) faces the side portion (43) of the strip (43). In FIG. 23, it is fitted with two sets of front and rear connecting plate portions (44) provided on the left side portion), and these pin insertion holes (124a) and (44a) are fitted with connecting pins (605) made of, for example, ball lock pins. ) Is inserted, so that the base end portion of the overhanging material (12) is connected to the upper part of the support column (4).

As shown by the alternate long and short dash line in FIG. 21, the aerial work platform is located on the side edge (left edge in the figure) of the left and right side edges of the protective surface portion (5C) closer to the aerial work platform (S). An extension portion (13) extending to (S) may be provided, and the tip of the extension portion (13) may be connected to an appropriate location (for example, a support of a temporary scaffold) in the aerial work platform (S).
Alternatively, the tip of the overhanging material (12) on the side closer to the aerial work area (S) (on the left side in the figure) is connected by an appropriate connecting means (for example, a rod for connecting, a pipe material, a wire material, etc.). It may be connected to a predetermined place (for example, a support outside the temporary scaffolding) of the aerial work area (S).
According to the above configuration, the stability of the protective gantry (5C) is further enhanced, and the support leg (2) is more reliably prevented from tilting or falling.

[Fourth Embodiment]
FIG. 24 shows a road protection gantry according to a fourth embodiment of the present invention.
The road protection gantry (1D) of this embodiment also has a road area (R4) close to an aerial work platform (S) consisting of, for example, a temporary scaffold at a building construction site (more specifically, of a total of two lanes). Materials, etc. that drop vehicles (C), pedestrians, etc. passing through the one-lane roadway on the aerial work platform (S) side and the sidewalk on the aerial work platform (S) side from the aerial work platform (S). It is for protection from the goods of.
As shown in FIG. 24, the protective gantry (1D) includes a plurality of support legs (2) arranged at intervals in the front-rear length direction on the left side of the roadway in the road area (R4), and the road area. It is provided with a protective surface (5D) that is located above (R4) and is supported by a plurality of support legs (2) so that it can receive articles that have fallen from the aerial work platform (S).
Each support leg (2) includes a base (3) and a support (4) erected on the base (3).
The protective surface portion (5D) is provided so as to project from the upper ends of the plurality of support legs (2) toward both sides in the left-right width direction of the road area (R4) and in the front-rear length direction of the road area (R4). A plurality of overhanging materials (12) arranged in parallel at intervals and a plurality of overhanging materials (12) that are handed over and arranged in parallel at intervals in the front-rear width direction of the road area. It includes a plurality of girders (7) arranged and a face material (8) attached to the plurality of girders (7).
Auxiliary guard fences (9) are erected on the left and right edges of the protective surface (5D).

As shown by the alternate long and short dash line in FIG. 24, the aerial work platform is located on the side edge (left edge in the figure) of the left and right side edges of the protective surface portion (5D) closer to the aerial work platform (S). An extension portion (13) extending to (S) may be provided, and the tip of the extension portion (13) may be connected to an appropriate location (for example, a support of a temporary scaffold) in the aerial work platform (S).
Alternatively, the tip of the overhanging material (12) on the side closer to the aerial work area (S) (on the left side in the figure) is connected by an appropriate connecting means (for example, a rod for connecting, a pipe material, a wire material, etc.). It may be connected to a predetermined place (for example, a support outside the temporary scaffolding) of the aerial work area (S).
According to the above configuration, the stability of the protective gantry (5D) is further enhanced, and the support leg (2) is more reliably prevented from tilting or falling.

[Fifth Embodiment]
FIG. 25 shows a road protection gantry according to a fifth embodiment of the present invention.
The road protection gantry (1E) of this embodiment also has a road area (R5) close to an aerial work area (S) consisting of, for example, a temporary scaffolding at a building construction site (more specifically, an aerial work area (more specifically, an aerial work area (1E)). This is to protect pedestrians and the like passing through the sidewalk on the S) side from articles such as materials falling from the aerial work platform (S).
As shown in FIG. 25, the protective gantry (1E) includes a plurality of support legs (2) arranged at intervals in the front-rear length direction on the right side of the sidewalk constituting the road area (R5). It has a protective surface (5E) that is located above the road area (R5) and is supported by multiple support legs (2) to receive articles that have fallen from the aerial work platform (S). ..
Each support leg (2) includes a base (3) and a support (4) erected on the base (3).
The protective surface portion (5E) is provided so as to project from the upper ends of the plurality of support legs (2) toward the aerial work platform (S) side (left side in the figure) and is the front-rear length of the road region (R4). A plurality of overhanging materials (12) arranged in parallel at intervals in the longitudinal direction and a plurality of overhanging materials (12) that are handed over and spaced in the front-rear width direction of the road area. It includes a plurality of girders (7) arranged in parallel and a face material (8) attached to the plurality of girders (7).
Auxiliary guard fences (9) are erected on the left and right edges of the protective surface (5E).

As shown by the alternate long and short dash line in FIG. 25, an extension portion (13) extending to the aerial work platform (S) is provided at the tip edge portion (left edge portion in the figure) of the protective surface portion (5E), and the extension portion is provided. The tip of (13) may be connected to an appropriate place (for example, a support of a temporary scaffold) in the aerial work area (S).
Alternatively, the tip of the overhanging material (12) is connected to a predetermined location (for example, the outside of the temporary scaffolding) of the aerial work area (S) by using an appropriate connecting means (for example, a rod for connecting, a pipe material, a wire rod, etc.). It may be connected to the support of the above.
According to the above configuration, the stability of the protective gantry (5E) is further enhanced, and the support legs (2) are more reliably prevented from tilting or falling.

The present invention is not limited to each of the above embodiments, and can be carried out with appropriate modifications without departing from the gist of the present invention described in the claims.

INDUSTRIAL APPLICABILITY The present invention is suitably used as a road protective gantry for preventing the occurrence of a disaster due to the fall of articles such as materials from a high-altitude work area such as a building construction site to a road area adjacent to the area. be able to.

(S): Aerial work platform (temporary scaffolding)
(R1) (R2) (R3) (R4) (R5): Road area
(1A) (1B) (1C) (1D) (1E): Road protection gantry
(2): Support legs
(3): Base
(4): Support
(5) (5X) (5Y) (5B) (5C) (5D) (5E): Protective surface
(6) (6X) (6Y): Horizontal lumber
(60) (60X) (60Y): Horizontal lumber split body
(7): Girder material
(8): Face material
(9): Auxiliary guard rail
(11): Panel unit
(11A): Square frame
(11B): Face material
(12): Overhanging lumber

Claims (13)

Temporarily installed so as to cover the road area from above in the road area where vehicles extending along the aerial work platform are close to the aerial work platform consisting of temporary scaffolding installed along the outer wall of the building. Te, a road protective gantry to prevent the occurrence of accidents due to falling of the article from the aerial region road area,
It consists of a morning glory device installed so as to project toward the road area at a predetermined height position on the outer surface of the temporary scaffolding that constitutes the aerial work area.
The road protection gantry has a base and a plurality of support legs erected on the base, respectively, and are arranged on both sides or one side of the road area at intervals in the length direction. , and a protective surface which is supported by a plurality of support legs to above the road region is disposed over the entire length of the road area can receive articles falling from the aerial region,
The protective surface is a disaster prevention system for falling objects, which has a lower part of the morning glory device on the side of both sides that is closer to the aerial work platform . The disaster prevention system for falling objects according to claim 1, wherein an auxiliary guard fence extending upward toward the morning glory device is erected on a side edge portion of both side edges of the protective surface portion located at the tip of the entrance portion. Of the edges on both sides of the protective surface, the side edge located at the tip of the entrance is provided with an extension that extends to the temporary scaffold that constitutes the aerial work area, and the tip of the extension is connected to the temporary scaffold. The disaster prevention system for falling objects according to claim 1 or 2. Of the both side edges of the protective surface, the side edge located at the tip of the entrance is a temporary scaffold that constitutes an aerial work area by connecting means consisting of at least one of a bar, a pipe, and a wire. A disaster prevention system for falling objects according to claim 1 or 2, which is connected. A plurality of support legs are arranged on both sides of the road area close to the aerial work area at intervals in the length direction.
A plurality of horizontal members in which the protective surface portions are connected to the upper ends of paired support legs facing each other in the width direction of the road region and are arranged in parallel at intervals in the length direction of the road region. And a plurality of girders that are straddled over a plurality of horizontal members and arranged in parallel at intervals in the width direction of the road area, and a face material that is attached to the plurality of girders. The disaster prevention system for falling objects according to any one of claims 1 to 4, further comprising . A plurality of support legs are arranged on both sides of the road area close to the aerial work area at intervals in the length direction.
A plurality of horizontal members in which the protective surface portions are connected to the upper ends of the pair of support legs facing each other in the width direction of the road region and are arranged in parallel at intervals in the length direction of the road region. 1. And a plurality of panel units each having a square frame and a face member attached to the square frame and being handed over across adjacent horizontal members, according to claims 1 to 4. The disaster prevention system for falling objects described in any one . 5. The fifth aspect of the present invention, wherein each horizontal member is composed of two horizontal member divisions in which one ends are hinged to each other, and the upper end of a column is hinged to the other end of each horizontal member division. Or the disaster prevention system for falling objects described in 6 . A plurality of support legs are arranged on one side of the road area close to the aerial work area at intervals in the length direction.
Protective surfaces are provided so as to project from the upper end of each support leg toward at least one of both sides in the width direction of the road area, and are arranged in parallel at intervals in the length direction of the road area. A plurality of girders, a plurality of girders that are straddled over the plurality of overhangs and arranged in parallel at intervals in the width direction of the road area, and a plurality of girders. The disaster prevention system for falling objects according to any one of claims 1 to 4, further comprising a face material that is stopped. A plurality of support legs are arranged on one side of the road area close to the aerial work area at intervals in the length direction.
Protective surfaces are provided so as to project from the upper end of each support leg toward at least one of both sides in the width direction of the road area, and are arranged in parallel at intervals in the length direction of the road area. It is provided with a plurality of overhanging materials and a plurality of panel units each having a square frame and a face material fixed to the square frame and being handed over across adjacent overhanging materials. , The disaster prevention system for falling objects according to any one of claims 1 to 4. A plurality of support legs are arranged on both sides of the road area close to the aerial work area at intervals in the length direction.
A plurality of horizontal members in which protective surface portions are connected to the upper ends of paired support legs facing each other in the width direction of the road area and arranged in parallel at intervals in the length direction of the road area. And a plurality of overhanging materials provided so as to project from the upper end of each support leg arranged on at least one side of both sides of the road area toward the side opposite to the horizontal member. A plurality of girders and a plurality of girders that are straddled over each of a plurality of horizontal members and a plurality of overhangs and arranged in parallel at intervals in the width direction of the road area, and a plurality of girders. The disaster prevention system for falling objects according to any one of claims 1 to 4, which comprises a facing material. A plurality of support legs are arranged on both sides of the road area close to the aerial work area at intervals in the length direction.
A plurality of horizontal members in which the protective surface portions are connected to the upper ends of paired support legs facing each other in the width direction of the road region and are arranged in parallel at intervals in the length direction of the road region. And a plurality of overhanging materials provided so as to project from the upper end of each support leg arranged on at least one side of both sides of the road area toward the side opposite to the horizontal member. Claims having a square frame and a face member anchored to the square frame, respectively, and having a plurality of panel units straddling adjacent horizontal members and adjacent overhangs, respectively. The disaster prevention system for falling objects according to any one of items 1 to 4. The disaster prevention system for falling objects according to any one of claims 5 to 11 , wherein the face material is made of a mesh material having translucency and ventilation. The disaster prevention system for falling objects according to any one of claims 1 to 12 , wherein an auxiliary guard fence is erected on the side edge of both side edges of the protective surface portion opposite to the entrance portion .

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