JP6685630B1 - Scaffolding board and method of forming suspended scaffolding using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scaffolding plate capable of preventing objects from falling when connecting them to each other. A scaffolding plate 1 has a rectangular scaffolding plate body 4 having long sides 2 and short sides 3, a first connecting portion provided on one long side 2a of the scaffolding plate body 4, and a scaffolding plate body 4. The second connecting portion provided on the other long side 2b of the. The 1st connection part has the projection part 5 which protrudes from the end surface which follows one long side 2a, and extends over the full length of the long side 2a. The second connecting portion has an insertion hole 6 which is formed on the end face continuous with the other long side 2b and extends over the entire length of the long side 2b. The second scaffolding plate 1 is arranged vertically on the first connecting portion of the first scaffolding plate 1 so that the second connecting portion contacts, and the second scaffolding plate 1 is rotated to move the first scaffolding plate 1 to the first connecting portion. The first scaffolding board 1 and the second scaffolding board 1 are connected to each other by arranging them on the same plane as the first scaffolding board 1 and drawing them to the first scaffolding board 1. In the step of connecting the scaffold plates 1 to each other, no gap is formed between the first connecting portion and the second connecting portion. [Selection diagram] Figure 1

Description

  The present invention relates to scaffolding boards used in construction work, repair work, and the like.

  When repairing bridges, suspension scaffolds have been installed in order to work under floor slabs and bridge girders existing at high altitudes. Some suspension scaffolds are formed by fixing a plurality of chains to a bridge girder, connecting scaffold plates to the lower ends of these chains, and sequentially connecting the plurality of scaffold plates in the horizontal direction. As a scaffolding plate for forming such a suspension scaffolding, conventionally, there is one as shown in FIGS. 16A and 16B.

  16A is a plan view of a conventional scaffolding plate 100, and FIG. 16B is a side view of the conventional scaffolding plate 100. The conventional scaffolding plate 100 is formed in a substantially square shape, and is roughly configured by a frame 101 formed by combining rod members into a rectangle and a plate-like floor material 102 stretched on the surface of the frame 101. In this scaffolding plate 100, a connecting portion for connecting the plurality of scaffolding plates 100 to each other is formed on one side and the other side opposite to this side. The connecting portion on one side is provided with a bar-shaped deposit metal fitting 103 projecting at a right angle to this side, while the connecting portion on the other side is provided with a receiving metal fitting 104 extending parallel to this side. The deposit metal fitting 103 has a substantially hook shape in which a tip end side has an opening upward and a base end side is formed in an elongated hole shape in a side view, and is installed at both ends of a side where a connecting portion is formed. There is. The receiving metal fittings 104 are formed of rod members extending in parallel to the side where the connecting portion is formed in a plan view, and are installed at both ends of the side where the connecting portion is formed.

  When forming a suspension scaffold with the above-mentioned conventional scaffolding board 100, first, as shown in FIG. 17A, the first scaffolding board 100A is attached to the chains 108A, 108A that are fixed and hung on the main girder 107 of the bridge. Then, the 2nd scaffolding board 100B is carried in on the 1st scaffolding board 100A, and the worker 109 performs the work which connects the 2nd scaffolding board 100B on the 1st scaffolding board 100A. At this time, as shown in FIG. 17A, the worker 109 orients the second scaffold plate 100B in a substantially vertical direction and engages the connecting portion with the connecting portion of the first scaffolding plate 100A. Specifically, the receiving metal fitting 104 of the second scaffolding board 100B is inserted from the opening of the deposit metal fitting 103 of the first scaffolding board 100A, and arranged so as to contact a portion facing the opening of the deposit metal fitting 103. Further, the lower end of the chain 108B fixed to the main girder 107 is connected to the vicinity of the deposit metal fitting 103 of the second scaffold plate 100B.

  After that, as shown in FIG. 17B, the second scaffolding plate 100B is rotated around the receiving metal fitting 104 by gravity, and the chain 108B is extended to face the same plane as the first scaffolding plate 100A. Then, the second scaffolding board 100B is pulled toward the first scaffolding board 100A, and the receiving metal fitting 104 of the second scaffolding board 100B is slid in the long hole portion of the deposit metal fitting 103 of the first scaffolding board 100A. . As a result, the connecting portion of the second scaffolding plate 100B is brought into close contact with the connecting portion of the first scaffolding plate 100A, and the work of connecting the second scaffolding plate 100B to the first scaffolding plate 100A is completed. By repeatedly carrying in and connecting the scaffolding plate 100 as described above, a suspended scaffolding is constructed.

  When forming a curved suspension scaffolding along a bridge by the scaffolding board 100, a wedge-shaped gap is formed between the connecting portions of the scaffolding boards 100 adjacent to each other. In order to close this gap, a gap closing material is placed and fixed on the scaffolding plate 100.

JP, 2008-204333, A

  However, the above-mentioned conventional scaffolding board 100 arrange | positions the 2nd scaffolding board 100B on the 1st scaffolding board 100A in the perpendicular direction, rotates it by weight, and turns it to the horizontal direction. A gap 110 as shown in FIG. 18 is formed between the connecting portions of the scaffold plates 100A and 100B while being pulled toward the side. From this gap 110, there is a possibility that objects used for work, such as a wire, metal objects, and tools, may fall. In particular, when a suspension scaffold is installed in a place where many people and vehicles are present below, such as a viaduct of an urban expressway, an object falling from the gap 110 is large even if it is a lightweight one such as a track. May cause problems.

  Further, since the conventional scaffolding plate 100 connects the adjacent scaffolding plates 100A and 100B with the depositing metal fittings 103 and the receiving metal fittings 104 provided at both ends of the side where the connecting portion is formed, the scaffolding boards 100A and 100B are connected to each other. There is a problem that it is difficult to be integrated. Specifically, the scaffold plates 100A and 100B are connected by deposit metal fittings 103 and receiving metal fittings 104 provided at both ends of the side. Since these deposit metal fittings 103 and the metal fittings 104 are in point contact with each other, the scaffolding boards 100A and 100B are connected in a direction perpendicular to the side. Moment load is not transmitted. Therefore, when an object having a relatively large mass is placed on the first scaffolding plate 100A, as shown in the front view of FIG. 19, the center of the first scaffolding plate 100A bends to the second scaffolding plate 100B. A step 111 is formed between them. Further, as shown in the side view of FIG. 20, a relatively large angular displacement θ is formed between the first scaffold plate 100A and the second scaffold plate 100B. As a result, when the worker or the trolley moves between the scaffolding plates 100A and 100B, there is a possibility that the worker may stumble or the trolley may stop.

  In addition, the conventional scaffolding plate 100 has a problem that the rectangular frame 101 is exposed to the lower side when the suspension scaffolding is formed, and thus the aesthetic appearance when viewed from below is poor.

  Further, since the above-mentioned conventional scaffolding plate 100 is composed of the framework 101 and the floor material 102, it is particularly necessary to use a material having high strength such as steel for the framework 101, which causes an inconvenience of increasing the mass.

  Further, the conventional scaffolding plate 100 described above closes a gap formed between the scaffolding plates 100 when forming a curved suspension scaffold, and thus it is necessary to dispose a gap closing member which is a separate component. There is a problem that it takes time. In addition, there is a problem that the number of parts for forming the suspension scaffold increases. Further, in the work of arranging the gap closing material, there is a possibility that parts, tools, etc. may fall from the gap.

  Then, the subject of this invention is providing the scaffolding board which can prevent a fall of a thing, when connecting mutually. Another object of the present invention is to provide a scaffolding plate that can increase the rigidity of the connecting portion as compared with conventional ones and can reduce steps and angular displacement. Another object of the present invention is to provide a scaffolding board that can improve the aesthetics when viewed from below when a suspended scaffold is formed. Another object of the present invention is to provide a scaffolding board that is lighter and stronger than conventional scaffolding boards. Another object of the present invention is to provide a scaffolding plate capable of forming a curved suspension scaffold without forming a gap.

In order to solve the above problems, the scaffolding plate of the present invention,
A rectangular plate-shaped scaffolding board body having long sides and short sides,
A first connecting portion provided on one long side of the scaffolding plate body, having a projecting portion that projects from this end face and extends over the entire length of the long side;
A second hole that is provided on the other long side of the scaffold plate body and has an insertion hole that extends along the entire length of the long side into which the protrusions of the scaffold plate that are arranged adjacent to each other in the short side direction are inserted And a connecting portion.

  According to the above configuration, when the second scaffolding plates are arranged and connected in the short side direction of the first scaffolding plate arranged in advance, the second scaffolding plate is arranged above the protrusion of the first connecting part of the first scaffolding plate. Then, the second scaffolding plate is arranged in an upright state so that the end surface of the second scaffolding plate provided with the second connecting portion is in contact therewith. At this time, the insertion hole of the second connecting portion of the second scaffolding plate arranged upright is formed so as to face the tip of the protruding portion of the first connecting portion of the first scaffolding plate. preferable. Subsequently, the second scaffolding plate is rotated over the protrusion of the first connecting portion of the first scaffolding plate and tilted down so that the protrusion of the first connecting portion of the first scaffolding plate The tip is inserted inside the insertion hole of the second connecting portion of the second scaffolding plate. Thereafter, the second scaffolding plate is drawn to the first scaffolding plate, and the end face of the scaffolding plate body of the second scaffolding plate is brought into close contact with the end face of the scaffolding plate body of the first scaffolding plate. The second scaffold plate is connected to the first scaffold plate. In these steps, the protrusion of the first connecting portion of the first scaffolding plate and the insertion hole of the second connecting portion of the second scaffolding plate both extend over the entire length of the long side. A gap is not formed between the first scaffold plate and the second scaffold plate. Therefore, it is possible to effectively prevent the inconvenience that an object falls from a gap between the scaffold plates during the work of forming the suspended scaffold with the plurality of scaffold plates.

  Further, in the first scaffolding plate and the second scaffolding plate, the protrusions extending over the entire length of the long side of the first scaffolding plate extend over the entire length of the long side of the second scaffolding plate. It fits into the existing insertion hole and is connected. Therefore, the first scaffolding plate and the second scaffolding plate are connected with higher rigidity than they are connected at both ends of the side. This can prevent a disadvantage that a step is formed between the first scaffold plate and the second scaffold plate, and reduce an angular displacement formed between the first scaffold plate and the second scaffold plate. As a result, it is possible to effectively prevent the inconvenience of the operator's stumbling and the trolley stopping when the worker or trolley moves between the scaffold plates.

  The scaffolding board of one embodiment has a protrusion projecting to the surface side of the scaffolding board at the tip of the projecting portion of the first connecting portion.

  According to the above embodiment, in the step of connecting the second scaffolding plate to the first scaffolding plate arranged in advance, the protrusion of the first connecting portion of the first scaffolding plate inserts the second scaffolding plate. When the second scaffolding plate is inserted into the hole, even if the second scaffolding plate receives a force in a direction of separating from the first scaffolding plate, the protrusion provided at the tip of the projecting portion of the first connecting portion causes the insertion of the second connecting portion. By engaging the inside of the hole, it is possible to prevent the second scaffold plate from separating from the first scaffold plate. Therefore, it is possible to prevent the inconvenience of forming a gap between the first scaffold plate and the second scaffold plate.

  The scaffolding board of one embodiment has a protrusion at the edge of the insertion hole of the second connecting portion, the protrusion protruding inward of the insertion hole.

  According to the above embodiment, in the step of connecting the second scaffolding plate to the first scaffolding plate arranged in advance, the protrusion of the first connecting portion of the first scaffolding plate inserts the second scaffolding plate. When the second scaffolding plate is inserted into the hole, even if the second scaffolding plate receives a force in the direction of separating from the first scaffolding plate, the protrusion provided on the edge of the insertion hole of the second connecting part causes the first connecting part to project. Engages with the projection of the part. This can prevent the second scaffold plate from separating from the first scaffold plate. Therefore, it is possible to prevent the inconvenience of forming a gap between the first scaffold plate and the second scaffold plate.

  The scaffolding board of one embodiment has a concave portion on the surface of the protruding portion of the first connecting portion, with which an edge portion of the insertion hole of the second connecting portion of the scaffolding plate disposed adjacent thereto engages.

  According to the above-described embodiment, in the step of connecting the second scaffolding plate to the first scaffolding plate arranged in advance, the second scaffolding is provided on the protrusion of the first connecting portion of the first scaffolding plate. The plates are arranged in an upright state such that the end faces of the second scaffolding plate provided with the second connecting portions are in contact with each other. After that, when the second scaffolding plate is tilted down, the edge portion of the insertion hole provided in the second connecting portion of the second scaffolding plate is aligned with the protruding portion of the first connecting portion of the first scaffolding plate. By engaging the recess, the second scaffolding plate stably rotates on the protrusion of the first connecting portion of the first scaffolding plate. Therefore, the second scaffold plate can be laid down without forming a gap between the second scaffold plate and the first scaffold plate, and the second scaffold plate can be arranged on the same plane as the first scaffold plate.

  The scaffolding board of one embodiment is a fixing mechanism which fixes the above-mentioned projection part inserted in the insertion hole of this 2nd connection part in the vicinity of the long side in which the 2nd connection part was provided so that it cannot be removed from the inside of the above-mentioned insertion hole. Is provided.

  According to the above-described embodiment, in the step of connecting the second scaffolding plate to the first scaffolding plate, the protrusion of the first connecting portion of the first scaffolding plate is different from that of the second connecting portion of the second scaffolding plate. The protrusion is inserted into the insertion hole and fixed by the fixing mechanism so as not to be detachable from the inside of the insertion hole. As a result, the second scaffolding plate can be fixed to the first scaffolding plate inseparably.

In the scaffolding plate of one embodiment, the fixing mechanism is provided on the upper side of the insertion hole in the scaffolding plate body, and a guide passage in which a communication hole communicating with the insertion hole is partially formed, and the guide passage. And a fixture formed so as to be movable inside and to be inserted into the communication hole,
The protruding portion of the first connecting portion is formed with a fixing insertion hole into which the fixing tool can be inserted,
When the protruding portion of the first connecting portion is inserted into the insertion hole of the second connecting portion, the tip of the fixing tool inserted into the communication hole of the guide passage is inserted into the fixing insertion hole of the protruding portion. By doing so, the protrusion of the first connecting portion and the insertion hole of the second connecting portion are engaged and fixed by this fixing tool.

  According to the above-described embodiment, the fixing mechanism for fixing the protruding portion of the first connecting portion inserted into the insertion hole of the second connecting portion includes the guide passage provided above the insertion hole in the scaffold plate body. , Has a fixture movable in the guide passage. In the guide passage, a communication hole that communicates with the insertion hole is partially formed, while the fixture is formed so as to be inserted into the communication hole. Further, a fixing insertion hole into which the fixing tool can be inserted is formed in the protruding portion of the first connecting portion. After the protrusion of the first connecting portion of the first scaffold plate is inserted into the insertion hole of the second connecting portion of the second scaffold plate in the step of connecting the second scaffold plate to the first scaffold plate The fixture of the guide passage is inserted into the communication hole, and the tip of the fixture inserted into the communication hole is inserted into the fixing insertion hole. Accordingly, the protrusion of the first connecting portion and the insertion hole of the second connecting portion can be engaged and fixed by the fixing tool.

  In the scaffolding plate of one embodiment, the fixture of the fixing mechanism is formed so that insertion and removal from the communication hole can be operated through an operation hole formed in the surface of the scaffolding plate body.

  According to the above-described embodiment, since the fixture of the fixing mechanism can be inserted and removed with respect to the communication hole through the operation hole formed on the surface of the scaffold plate body, the scaffold plate can be operated by the operator on the scaffold plate. The mutual fixing and releasing work can be easily and safely performed. Here, it is preferable that the fixing tool is formed with an engaging hole for operation so that it can be operated by a tool having a sharp tip such as a chin which is inserted through the operating hole.

The scaffolding board of one embodiment, on the short side of the scaffolding board body, comprises a short side connecting portion for connecting to the short side of the scaffolding board arranged adjacently,
The short side connecting portion is
An opening formed in the end face of the short side of the scaffolding plate body,
A short side coupling body formed so that it can appear and disappear from the opening,
A passage / insertion chamber that is formed inside the scaffolding plate main body, communicates with the opening, and passes through the short side connecting body, and into which the short side connecting body of the short side connecting portion of the adjacent scaffolding plate is inserted.
An accommodating chamber that is connected to the inner side of the passage-cum-insertion chamber and accommodates the short side coupling body,
And a fixing mechanism for fixing the short-side connector inserted in the passage / insertion chamber so as not to be detachable from the passage / insertion chamber.

  According to the above-described embodiment, since the short side of the scaffolding plate body is provided with the short side connecting portion for connecting to the short side of the scaffolding plate adjacently arranged, the short side is arranged in the long side direction so that the short side is in contact. The scaffolding boards can be interconnected. Here, the short side connecting portion, an opening formed in the end face of the short side of the scaffolding plate body, a short side connecting body formed to be retractable from this opening, is formed inside the scaffolding plate body, A passage / insertion chamber into which the short side connector passes through the opening and the short side connector of the adjacent scaffold plate is inserted, and the short side connector is connected to the inner side of the passage / insertion chamber. And a fixing mechanism for fixing the short side coupling body inserted in the passage / insertion chamber so as not to be detachable from the passage / insertion chamber. Therefore, if the adjacent scaffold plates are arranged so that the openings of the short side connecting portions face each other, one of the short side connecting bodies is inserted into the other passage / insertion chamber, and the other fixing mechanism is used. By fixing the short-side connecting body, the scaffold plates can be connected to each other. Therefore, it is possible to select the short side connecting body on the side where the work is easy and insert and fix it in the passage / insertion chamber, so that the connecting work can be performed with a high degree of freedom. Further, since the short side connecting portion having the same structure is provided on the short side of the scaffolding plate body, it is not necessary to distinguish the type of the short side connecting portion when installing the scaffolding plate. Therefore, the scaffolding board can be arranged in a high degree of freedom. Further, since the short sides of the scaffolding plates can be connected by the members inside the scaffolding plate body, it is not necessary to use other parts such as clamps. Therefore, in the work of forming the suspended scaffolding, it is possible to reduce the number of components used and prevent the components from falling from the suspended scaffolding.

In the scaffolding board of one embodiment, the fixing mechanism is provided on an upper side of the passage-cum-insertion chamber in the scaffold-plate body, and has a guide passage partially formed with a communication hole communicating with the passage-cum-insertion chamber. A fixture that is movable in the guide passage and can be inserted into the communication hole,
The short side coupling body is formed with a fixing insertion hole into which the fixing device can be inserted,
When the short side connecting body of the adjacent scaffold plate is inserted into the passage-cum-insertion chamber, the tip of the fixing tool inserted into the communication hole of the guide passage is inserted into the fixing insertion hole of the short side connecting body. Is inserted, the short-side connector and the passage / insertion chamber are engaged and fixed by this fixture.

  According to the above-described embodiment, the fixing mechanism for fixing the short side connecting body inserted into the passage / insertion chamber includes the guide passage provided on the upper side of the passage / insertion chamber in the scaffold plate body, and the guide passage. And a fixture formed so as to be movable inside. In the guide passage, a communication hole communicating with the passage / insertion chamber is partially formed, while the fixing tool is formed so as to be inserted into the communication hole. In addition, the short side connecting body is formed with a fixing insertion hole into which the fixing tool can be inserted. In the process of connecting the short side of the first scaffolding board and the short side of the second scaffolding board, the short side connecting body of the first scaffolding board was inserted into the passage / insertion chamber of the second scaffolding board. After that, the fixture of the guide passage is inserted into the communication hole, and the tip end of the fixture inserted into the communication hole is inserted into the fixing insertion hole. Accordingly, the short side connecting body of the first scaffolding plate and the passage / insertion chamber of the second scaffolding plate can be engaged and fixed by the fixing device.

  In the scaffolding plate of one embodiment, the fixture of the fixing mechanism is formed so that insertion and removal from the communication hole can be operated through an operation hole formed in the surface of the scaffolding plate body.

  According to the above-described embodiment, since the fixture of the fixing mechanism can be inserted and removed with respect to the communication hole through the operation hole formed on the surface of the scaffold plate body, the scaffold plate can be operated by the operator on the scaffold plate. The mutual fixing and releasing work can be easily and safely performed. Here, it is preferable that the fixing tool is formed with an engaging hole for operation so that it can be operated by a tool having a sharp tip such as a chin which is inserted through the operating hole.

  In the scaffolding plate of one embodiment, the scaffolding plate body is formed by arranging a plurality of hollow shape members extending in the long side direction in the short side direction and fitting with each other.

  According to the above-described embodiment, the scaffolding plate main body is formed of a plurality of hollow shape members arranged in the width direction and fitted to each other, so that the framework is not exposed on the back surface as in the conventional case. Therefore, the aesthetics from below can be improved when the suspension scaffold is formed. Further, since a plurality of hollow frame members are fitted in the width direction to form a plate-shaped scaffold plate body, the hollow frame material is made of, for example, lightweight metal such as aluminum or FRP (fiber reinforced plastic). The resin or the like can be used. Therefore, it is possible to reduce the weight of the scaffold plate and reduce the work load for forming the suspended scaffold.

A scaffolding board according to another aspect of the present invention has a rectangular plate-shaped scaffolding board body having long sides and short sides,
The scaffold plate body is characterized in that a plurality of hollow shape members extending in the long side direction are arranged in the short side direction and are fitted to each other.

  According to the above configuration, the scaffolding plate body in the form of a rectangular plate having a long side and a short side is formed by a plurality of hollow shape members that are aligned and fitted in the width direction, so that a frame is formed on the back surface as in the conventional case. Since it is not exposed, it is possible to improve the aesthetics from below when forming the suspension scaffold. In addition, since a lightweight metal such as aluminum or a resin such as FRP can be used as the material of the hollow shape member, it is possible to reduce the weight of the scaffolding plate and reduce the work load for forming the suspended scaffolding. Can be reduced.

  In the scaffolding plate of one embodiment, the hollow shape member forming the scaffolding plate body is an extruded shape member made of aluminum.

  According to the above-described embodiment, by forming the scaffolding plate main body from an extruded profiled material made of aluminum as the hollow shape member, a scaffolding plate that is lightweight and has relatively high strength can be obtained.

  In the scaffolding plate of one embodiment, the scaffolding plate body is formed such that the fitting length between adjacent hollow members can be changed in the short side direction, and the fitting length in the short side direction is long. It is formed so that different lengths can be set at different positions in the side direction.

  According to the above-described embodiment, the scaffolding plate body formed of the hollow shape members is formed so that the fitting length between the adjacent hollow shape members can be changed in the short side direction. Further, the fitting lengths in the short side direction between the adjacent hollow shape members are formed so that they can be set to different lengths at different positions in the long side direction. As a result, when forming a suspended scaffold by arranging the scaffold plates, if there is a gap between adjacent scaffold plates, by adjusting the fitting length in the short side direction between the hollow shape members appropriately. The gap can be eliminated by adjusting the length of the scaffold plate in the short side direction. In addition, the fitting length in the short side direction between the adjacent hollow shape members is set to be small at one end in the long side direction and set at the other end in the long side direction to be large so that the shape of the scaffolding plate main body is changed. It can be changed to a fan shape. Therefore, when forming a curved suspension scaffold along a bridge, the inconvenience of creating a gap in the suspension scaffold can be effectively prevented by adjusting the shape of the scaffold plate body to a fan shape according to the curvature of the curve. You can Moreover, by appropriately adjusting the fitting length in the short side direction between the adjacent hollow members, it is possible to form suspension scaffolds having curves of various curvatures without a gap. Furthermore, since a separate part for closing the gap formed between the scaffolding plates is not required, the suspension scaffold can be formed with a small number of parts, and when the gap is closed by another part It is possible to prevent the inconvenience of falling tools and tools.

  In the scaffolding plate of one embodiment, an annular support metal fitting is housed inside the hollow shape member so as to be retractable from a metal fitting hole formed on the surface of the scaffolding plate body.

  According to the above-described embodiment, the annular support fitting is housed inside the hollow shape member forming the scaffold plate body. The support fitting is formed so as to be retractable from a fitting hole formed on the surface of the scaffold plate body. As a result, when the support fitting is not used, the support fitting and the parts relating to the support fitting do not protrude from the surface of the scaffolding plate body. Therefore, it is possible to effectively prevent the inconvenience that the work of the worker on the scaffold plate or the traveling of the trolley is hindered by the protrusion. In addition, since the support fitting is built in the scaffolding plate body, it is not necessary to use bolts, clamps, etc., which are separate components, so that the suspension scaffold can be formed with a small number of components. Here, the support fitting may be connected to a chain, a wire, or the like for suspending the scaffolding plate, or may be gripped by an operator, in short, various uses for supporting the scaffolding plate. The metal fittings are applicable.

  The scaffolding board of one embodiment has a protruding portion of the first connecting portion, which is inserted into an insertion hole of the second connecting portion, inside a hollow member that forms a long side provided with the second connecting portion. An assembly block of a fixing mechanism that permanently locks the insertion hole is fitted and housed.

  According to the above-described embodiment, the scaffolding plate includes a fixing mechanism that permanently fixes the protruding portion of the first connecting portion, which is inserted into the insertion hole of the second connecting portion, from the inside of the insertion hole. The connections of the scaffolding boards are fixed. Here, a scaffolding plate fixed to be connected to each other by fitting and housing the assembly block of the fixing mechanism inside the hollow shape member forming the long side provided with the second connecting portion. Can be easily manufactured.

It is a top view showing a scaffolding board of an embodiment of the present invention. It is a cross-sectional view of a suspension scaffold formed using a scaffold plate. FIG. 3 is a plan view of the suspension scaffolding taken along line B-B ′ in FIG. 2. FIG. 2 is a cross-sectional view of the scaffolding plate taken along the line A-A ′ in FIG. 1. It is a fragmentary sectional view showing the circumference of the 1st connection part of a scaffolding board. It is a fragmentary sectional view showing the circumference of the 2nd connection part of a scaffolding board. It is sectional drawing which shows the connection part of the 1st connection part of a 1st scaffold board and the 2nd connection part of a 2nd scaffold board. FIG. 8 is a cross-sectional view of the connecting portion taken along the line C-C ′ in FIG. 7. It is sectional drawing which shows the process of connecting the 1st connection part of a 1st scaffold board and the 2nd connection part of a 2nd scaffold board. It is sectional drawing which shows the process of following FIG. 9A. It is sectional drawing which shows the process of following FIG. 9B. It is a plane sectional view showing the short side connection part of a scaffold board. FIG. 11 is a cross-sectional view of the short side connecting portion taken along the line E-E ′ in FIG. 10. It is a plane sectional view showing a state where the 1st scaffolding board and the 3rd scaffolding board were connected by inserting the short side connection object of the 1st scaffolding board in the passage and insertion room of the 3rd scaffolding board. It is a plane sectional view showing a mode that the 1st scaffolding board and the 3rd scaffolding board were connected by inserting the short side connection object of the 3rd scaffolding board in the passage and insertion room of the 1st scaffolding board. It is a top view which shows the assembly block of a hanging metal fitting. FIG. 13B is a cross-sectional view of the assembly block of the hanging metal fitting taken along line G-G ′ in FIG. 13A. It is sectional drawing which shows the sliding fitting part with which the hollow shape materials of a scaffolding board were mutually connected. It is a top view which shows a mode that one short side of the scaffold board was made short and the other short side was made long. It is a top view which shows the conventional scaffold board. It is a side view which shows the conventional scaffold board. It is a figure which shows the process of forming a suspension scaffold with the conventional scaffold board. It is a figure which shows the process of following FIG. 17A. It is a top view which shows the connection part of the conventional adjacent scaffolding board. It is a front view which shows a mode that the load was applied to the conventional scaffolding board. It is a side view which shows a mode that the load was applied to the conventional scaffolding board.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

  FIG. 1 is a plan view showing a scaffolding board according to an embodiment of the present invention. The scaffolding board of the present embodiment is used to form a scaffolding for work in construction work, repair work, etc., and in particular, it is suspended from a high place and connected to each other to form a hanging scaffolding. It is suitable for

  The scaffolding plate 1 of the present embodiment has a rectangular plate-like scaffolding plate body 4 having long sides 2 and short sides 3 in a plan view, and a first connection provided on one long side 2a of the scaffolding plate body 4. And a second connecting portion provided on the other long side 2b of the scaffolding plate body 4. By connecting the plurality of scaffolding plates 1 arranged in the short side direction to each other by the opposing first connecting portion and second connecting portion, the plurality of scaffolding plates 1 in the short side direction are formed to be integrated. There is. In addition, the scaffolding plate 1 is provided with short side connecting portions for connecting to the short sides 3 of the scaffolding plate 1 that are adjacent to each other in the long side direction on both short sides 3 and 3 of the scaffolding plate body 4. By connecting the plurality of scaffolding plates 1 arranged in the long side direction to each other by the opposing short side connecting portions, the plurality of scaffolding plates 1 in the long side direction are formed so as to be integrated. In this way, a plurality of scaffolding plates 1 are connected to each other in the short side direction and the long side direction to form a scaffold.

  As shown in FIG. 1, on the surface of the scaffolding plate 1, when the scaffolding plate 1 adjacent to one long side 2a is connected to the first connecting portion, a fixture for the adjacent scaffolding plate 1 is provided. A fixing hole 7 that engages is formed. Further, when connecting or disconnecting the scaffolding plate 1 adjacent to the other long side 2b near the second connecting portion, a fixing tool is engaged with the fixing hole 7 of the adjacent scaffolding plate 1 or A long side fixing operation hole 8 for removing is formed. Further, in the vicinity of both the short sides 3 and 3, an advancing / retreating operation hole 41 for advancing / retreating the fitting for connecting the scaffolding plate 1 adjacent to these short sides 3 and 3, and the inserted fitting. A short side fixing operation hole 40 for engaging or removing the fixing tool with respect to is formed. Further, a metal fitting operating hole 60 for operating the metal fittings when the scaffolding board 1 is suspended or when the scaffolding board 1 is transported, and a bolt hole 80 into which a bolt is screwed are formed. Further, on the surface of the scaffolding plate 1, rivets 70 for connecting the hollow shape members described later to each other appear.

  The dimensions of the scaffolding plate 1 of this embodiment can be formed such that the long side 2 is 3000 mm, the short side 3 is 600 mm, and the thickness is 60 mm. The long side 2 may be formed to have a size of 2000 mm or 3850 mm. Further, the length of the long side 2 and the short side 3 and the ratio of the long side 2 and the short side 3 can be set to various values.

  FIG. 2 is a diagram showing a suspension scaffold installed for repair work of a bridge, and schematically shows a suspension scaffold formed of a plurality of scaffolding plates 1 is installed under the floor slab of the bridge. FIG. FIG. 3 is a cross-sectional view taken along the line B-B ′ in FIG. 2, and is a plan view schematically showing the suspension scaffold. As shown in FIG. 2, a chain 24 is fixed to a lower flange of a main girder 22, 22, 22, ... Supporting a floor slab 21 of a bridge 20 by a clamp 23, and a scaffolding plate is attached to a lower end of the chain 24. 1 is connected and suspended. In FIG. 3, reference numeral 65 denotes a hanging metal fitting connected to the chain 24, which will be described in detail later. The plurality of scaffolding plates 1 suspended by the chains 24 are connected to each other in the long side direction and the short side direction to form the suspension scaffold 10. Specifically, the plurality of scaffolding plates 1 are installed along the short side direction by being connected to each other by the first connecting portion and the second connecting portion along the main girder 22 extending in the bridge axis direction. It In addition, a plurality of scaffolding plates 1 are installed along the adjacent main girders 22 in the short side direction. The rows of the scaffolding boards 1 installed in the short side direction are connected to the scaffolding boards 1 and 1 adjacent to each other in the long side direction by the short side connecting portions, so that they are also connected to the long side direction. The suspension scaffold 10 is formed. In FIG. 3, the X direction is the long side direction and the Y direction is the short side direction. That is, the scaffold board 1A and the scaffold board 1B are arranged and connected in the short side direction, and the scaffold board 1A and the scaffold board 1C are arranged and connected in the long side direction. Further, the suspension scaffolding 10 using the scaffolding board 1 of the present embodiment may be installed on a structure other than a bridge.

  FIG. 4 is a cross-sectional view taken along the line A-A ′ in FIG. 1, and is a cross-sectional view showing a state in which the scaffolding plate 1 is cut in the short side direction. As shown in FIG. 4, the scaffolding plate 1 is formed in a plate shape by arranging five hollow shape members extending in the long side direction in the width direction, that is, the short side direction and fitting them together. ing. These hollow profiles are made of aluminum or an aluminum alloy and are produced by extrusion molding. These hollow shape members include a central material 11 located at the center in the short side direction, intermediate materials 12 and 13 located on both sides of the central material 11, and a first end material 14 located at one end in the short side direction. , The second end material 15 located at the other end in the short side direction.

  The central member 11 has a bilaterally symmetrical shape in the width direction and is formed in a closed cross section, and fitting grooves into which the flanges of the adjacent intermediate members 12 and 13 are fitted are formed on both sides in the width direction and on the front and back surfaces. ing. The intermediate members 12 and 13 have the same cross section, and are arranged on both sides of the central member 11 in bilaterally symmetrical directions. The intermediate members 12 and 13 are formed into a generally square closed cross section on the outside in the width direction, and flanges extending toward the inside in the width direction are formed at the upper and lower ends of the closed cross section. The tip portions of these flanges are fitted in the fitting groove of the central member 11. Further, on the outer side in the width direction of the intermediate members 12 and 13, a fitting groove into which the flanges of the first end material 14 and the second end material 15 adjacent to each other are fitted is formed. The first end material 14 forms one long side 2a and is provided with a first connecting portion at an end in the width direction. The first end material 14 has a hollow closed cross section on the side where the first connecting portion is provided, and flanges extending inward in the width direction are formed at the upper end and the lower end of the closed cross section. The tip portions of these flanges are fitted into the fitting groove of the intermediate member 12. The second end material 15 forms the other long side 2b and is provided with a second connecting portion at the end in the width direction. The second end material 15 has a hollow closed cross section on the side where the second connecting portion is provided, and flanges extending inward in the width direction are formed at the upper and lower ends of the closed cross section. The tip portions of these flanges are fitted into the fitting groove of the intermediate member 13. The fitting portions between the central member 11 and the intermediate members 12 and 13 and the fitting portions between the intermediate members 12 and 13 and the first end member 14 and the second end member 15 are mutually fitted. In this state, the sliding fitting portion 90 is formed so as to be slidable in the width direction.

  As described above, the scaffolding plate 1 is configured by arranging a plurality of hollow members having a closed cross section in the width direction and fitting the hollow members together. As a result, it is possible to secure high bending rigidity especially in the long-side direction, despite being lightweight. Also, since the relatively smooth surface of the hollow frame is exposed on both the front surface and the back surface, when viewed from below with the framework exposed on the back surface like a scaffolding plate composed of a conventional frame and floor material. It is possible to prevent inconvenience that impairs the aesthetics of Here, the hollow shape member may be formed of a metal other than aluminum, or may be formed of a resin such as FRP. Further, the number of hollow members forming the scaffolding plate 1 may be any number other than five. In addition, the scaffolding plate 1 is formed by the central member 11, the intermediate members 12 and 13, the first end material 14 and the second end material 15 which are hollow shape members, and the first end material 14 has a first connecting portion. Although the second end piece 15 has the second connecting portion, the scaffolding plate body 4 is formed of a plurality of hollow shape members, while the first connecting portion and the second connecting portion are formed separately from the scaffolding plate body 4. May be.

  FIG. 5 is a cross-sectional view showing the first connecting portion provided on one long side 2a of the scaffolding plate body 4. The first connecting portion is formed on the side surface of the first end material 14 that constitutes the scaffolding plate 1, and has the projecting portion 5 that projects from the end face 25a that is continuous with one long side 2a of the scaffolding plate body 4. The protrusion 5 is formed over the entire length of the one long side 2 a of the scaffolding plate body 4. The protrusion 5 has a thickness of about 20 to 30% of the thickness of the scaffolding plate body 4 in a cross section in the short side direction of the scaffolding plate 1 and a dimension having a protrusion amount of 2 to 3 times the thickness. Has been formed. The surface of the protruding portion 5 is formed with a flat surface parallel to the surface of the scaffolding plate body 4, and the tip ends thereof are recessed portions 26, 26 with which the protrusions 31 of the second connecting portion of the scaffolding plate 1 installed adjacently are engaged. Is provided. Further, a protrusion 27 protruding toward the surface of the scaffolding plate body 4 is provided at the tip of the surface of the protruding portion 5. Further, between the tip end surface and the back surface of the protruding portion 5 is formed into a curved surface having an arc cross section. An inclined surface 29 is formed between the rear surface of the protruding portion 5 and the end surface 25a of the scaffolding plate body 4, which increases the thickness of the protruding portion 5. There is.

  FIG. 6 is a cross-sectional view showing the second connecting portion provided on the other long side 2b of the scaffolding plate body 4. The second connecting portion is formed on the side surface of the second end material 15 that constitutes the scaffolding plate 1, and has the insertion hole 6 formed in the end face 25b that is continuous with the other long side 2b of the scaffolding plate body 4. The insertion hole 6 is formed over the entire length of the other long side 2b of the scaffolding plate body 4. The insertion hole 6 is formed to have a height of about 40 to 50% of the thickness of the scaffolding plate body 4 and a depth dimension of 1.5 to 1 times this height. Inside the insertion hole 6, an inclined surface 30 that is inclined toward the inside of the insertion hole 6 from the lower edge of the insertion hole 6 toward the inside is provided. Further, a protrusion 31 protruding inside the insertion hole 6 is provided on the upper edge of the insertion hole 6.

  FIG. 7 is a cross-sectional view showing a state in which the second connecting portion of the second scaffolding plate 1B is connected to the first connecting portion of the first scaffolding plate 1A, and FIG. 8 is CC of FIG. It is sectional drawing in a line. That is, FIG. 7 is a cross-sectional view of a connecting portion between the first scaffolding plate 1A and the second scaffolding plate 1B, and FIG. 8 is a vertical sectional view of the connecting portion. The scaffolding plate 1 of the present embodiment is provided with a long side fixing mechanism 9 for fixing the connected state of the scaffolding plate 1 adjacently connected to the first connecting portion to the second connecting portion. The long side fixing mechanism 9 has a guide fitting 32 that is arranged on the upper side of the insertion hole 6 of the second connecting portion, that is, on the surface side of the scaffolding plate 1, and forms a guide passage inside. Inside the guide fitting 32, a cylindrical fixture 34 formed so as to be movable in the guide passage is accommodated. In the guide fitting 32, a hole is formed in a part of the bottom surface of the guide passage at the central portion in the extending direction of the guide passage, and a hole communicating with the hole of the guide fitting 32 is formed on the wall surface of the insertion hole 6. Has been formed. The hole of the guide fitting 32 and the hole of the wall surface of the insertion hole 6 form a communication hole 37. That is, the guide passage and the insertion hole 6 are communicated with each other through the communication hole 37. The guide fitting 32 is arranged so that the inner guide passage communicates with the long side fixing operation hole 8 on the surface of the second end material 15.

  The cylindrical fixture 34 is formed with a guide holding hole 33 that penetrates in the radial direction and extends from the center in the axial direction to the base end. A holding rod 35 is inserted through the guide holding hole 33, and both ends of the holding rod 35 are fixed to both walls that define a guide passage of the guide fitting 32. The holding rod 35 is arranged above the communication hole 37 of the guide fitting 32 and near the base end side of the guide passage. The fixing tool 34 is held in the guide passage at the base end side of the guide passage while the guide holding hole 33 is inserted through the holding rod 35 fixed to the guide fitting 32, while the tip end side of the guide passage is provided. Then, it is adapted to fall into the communication hole 37 and be inserted. Further, on the upper side surface of the fixture 34, which is the surface facing the long side fixing operation hole 8, an engagement hole 36 with which the tip of a tool such as a Shino can be engaged is formed. The tip of the tool inserted from the surface of the scaffolding plate 1 through the long side fixing operation hole 8 is engaged with the engaging hole 36, and the fixing member 34 is advanced and retracted in the guide passage, and dropped into the communication hole 37 and pulled up. It is designed to operate. The guide fitting 32, the fixture 34, the communication hole 37, the holding rod 35 and the like form a long side fixing mechanism 9. In the long side fixing mechanism 9, the guide fitting 32, the fixing tool 34, and the holding rod 35 are fixed or connected to each other, and are formed into a unitary assembly block. The assembly block of the long side fixing mechanism 9 is inserted into the second end material 15 which is a hollow shape member, and is fixed with rivets, bolts and nuts or the like. By using the assembly block of the long side fixing mechanism 9, the scaffolding plates 1 that can be fixed to each other can be easily manufactured.

  On the other hand, the protruding portion 5 of the first connecting portion is formed with a fixing hole 7 penetrating from the front surface to the back surface of the protruding portion 5. Fixing the long side fixing mechanism 9 of the second connecting portion in a state in which the protrusion 5 of the first connecting portion of the first scaffolding plate 1A is inserted into the insertion hole 6 of the second connecting portion of the second scaffolding plate 1B. The tool 34 drops into the communication hole 37 and is inserted. As a result, the tip of the fixture 34 is inserted into the fixing hole 7 as shown by the imaginary line in FIG. In this way, the fixture 34 engages the protrusion 5 of the first connecting portion and the insertion hole 6 of the second connecting portion to fix the first scaffolding board 1A and the second scaffolding board 1B to each other. There is.

  When manufacturing a suspended scaffold using the scaffolding board 1 of the present embodiment, the second scaffolding board 1B is placed on the first scaffolding board 1A that has been suspended first, and the second scaffolding board 1B is placed on the scaffolding board 1B. The step of arranging and connecting the first scaffolding board 1A on the same plane is repeated to arrange the plurality of scaffolding boards 1 in the short side direction. 9A to 9C show the first connecting portion of the first scaffolding plate 1A and the second scaffolding plate 1B in a process from placing the second scaffolding plate 1B on the first scaffolding plate 1A to connecting them to each other. It is sectional drawing which shows the relationship with the 2nd connection part of. 9A to 9C, the long side fixing mechanism 9 of the second connecting portion and the fixing hole 7 of the protruding portion 5 of the first connecting portion are not shown.

  For example, when forming a suspension scaffold under the floor slab of a bridge, first, the first scaffolding plate 1 is suspended, as in the case of using a conventional scaffolding plate. That is, the chain 24 is fixed to the main girder 22 and hangs down, and the scaffolding plate 1 is connected to the lower end of the chain 24. The connection with the chain 24 is performed by an eye bolt or the like screwed into the bolt hole 80. The second scaffolding plate 1 is carried in on the first scaffolding plate 1, and the second scaffolding plate 1 is connected to a new chain 24 hung from the main girder 22. Subsequently, the second scaffolding plate 1 is erected on the first scaffolding plate 1 so as to be oriented in a substantially vertical direction so that the second connecting portion contacts the first connecting portion of the first scaffolding plate 1. To do. FIG. 9A is a cross-sectional view showing a state of the first connecting portion of the first scaffolding plate 1 and the second connecting portion of the second scaffolding plate 1 at this time. As shown in FIG. 9A, the end surface 25b of the second scaffold plate 1B is in contact with the surface of the protrusion 5 of the first scaffold plate 1A, and the second scaffold plate is attached to the end surface 25a of the first scaffold plate 1A. The second scaffold plate 1B is erected on the first scaffold plate 1A so that the surfaces of 1B are in contact with each other. Thereafter, as shown by the arrow R in FIG. 9B, the second scaffolding plate 1B is rotated so that the second connecting portion located on the upper side when standing is directed downward. At this time, the protrusion 31 of the second connecting portion of the second scaffolding plate 1B engages with the recess 26 of the protrusion 5 of the first connecting portion of the first scaffolding plate 1A. Thereby, the 2nd scaffolding board 1B can rotate stably around the 1st connection part of the 1st scaffolding board 1A. When the second scaffolding board 1B rotates around the first connecting portion of the first scaffolding board 1A and faces the horizontal direction, as shown in FIG. 9C, insertion of the second connecting portion of the second scaffolding board 1B. The tip of the protrusion 5 of the first connecting portion of the first scaffolding plate 1 </ b> A is inserted into the hole 6. The second scaffolding plate 1B facing in the horizontal direction is suspended from the main girder 22 by the chain 24. Here, an additional chain 24 may be connected to the second scaffolding plate 1B, or the chain 24 may be replaced. Subsequently, the second scaffolding plate 1B is pulled toward the first scaffolding plate 1A to bring the end surface 25a of the first scaffolding plate 1A into contact with the end surface 25b of the second scaffolding plate 1B. After that, a tool such as Shino is inserted into the long side fixing operation hole 8 of the second scaffolding board 1B, and the fixing tool 34 in the second scaffolding board 1B is operated to drop it into the communication hole 37. Is inserted into the communication hole 37, and the tip of the fixing tool 34 is inserted into the fixing hole 7 of the first scaffolding plate 1A. Thereby, the 1st connection part of the 1st scaffolding board 1A and the 2nd connection part of the 2nd scaffolding board 1B are fixed. In this way, the second scaffolding plate 1B is arranged and fixed on the same plane of the first scaffolding plate 1A. By repeatedly carrying in and fixing the second scaffolding plate 1B to the first scaffolding plate 1A, the scaffolding plates 1 are sequentially arranged in the short side direction to form a scaffold extending in the short side direction.

  In the process of tilting the second scaffolding plate 1B erected on the first scaffolding plate 1A, pulling it toward the first scaffolding plate 1A side and fixing it to the first scaffolding plate 1A, the scaffolding of the present embodiment In the plate 1, since the projecting portion 5 of the first connecting portion and the insertion hole 6 of the second connecting portion are formed over the entire length of the long side 2, the first scaffolding board 1A and the second scaffolding board are formed. No gap is formed between 1B and 1B. Therefore, it is possible to effectively prevent the inconvenience that tools, materials, and the like fall from the gap between the first scaffolding plate 1A and the second scaffolding plate 1B.

  In addition, the scaffolding plate 1 of the present embodiment has the protrusion 27 at the tip of the protruding portion 5 of the first connecting portion and the protrusion 31 at the edge of the insertion hole 6 of the second connecting portion, so that the second scaffolding plate is provided. Even when a force in the direction of moving the second scaffolding plate 1B away from the first scaffolding plate 1A is accidentally applied during the work of pulling the 1B toward the first scaffolding plate 1A, the protrusions 27 and 31 are engaged. Accordingly, the engagement between the first connecting portion of the first scaffolding plate 1A and the second connecting portion of the second scaffolding plate 1B is maintained. Therefore, even if the operator erroneously operates the first scaffolding plate 1A and the second scaffolding plate 1B suspended by the chain 24, the second scaffolding plate 2B may be separated from the first scaffolding plate 1A. The inconvenience that the second scaffolding plate 1B rotates around the lower end of the chain 24 is prevented. As a result, an inconvenience that an object or a worker falls through a gap between the first scaffold plate 1A and the second scaffold plate 2B, or an inconvenience that the worker loses balance due to movement or rotation of the second scaffold plate 2B. Can be effectively prevented.

  Further, the scaffolding plate 1 of the present embodiment has an insertion hole in which the first connecting portion has a protruding portion 5 protruding over the entire length of the long side 2a and the second connecting portion is opened over the entire length of the long side 2b. 6, the protrusion 5 of the first scaffolding plate 1A is fitted and connected to the insertion hole 6 of the second scaffolding plate 1B. Therefore, the first scaffolding plate 1A and the second scaffolding plate 1B are connected with higher rigidity than the conventional scaffolding plate is connected at both ends of the sides. Therefore, when a load is applied to the first scaffolding plate 1A, it is possible to prevent a problem that a step is formed between the first scaffolding plate 1A and the second scaffolding plate 1B. Further, in this scaffolding plate 1, the protrusion 5 of the first connecting portion of the first scaffolding plate 1A is inserted into and fitted into the insertion hole 6 of the second connecting portion of the second scaffolding plate 1B. The first scaffold plate 1A and the second scaffold plate 1B are connected. Therefore, since the moment load is transmitted in the short side direction, when the load acts on the first scaffolding plate 1A or the second scaffolding plate 1B, it is between the first scaffolding plate 1A and the second scaffolding plate 1B. It is possible to significantly reduce the angular displacement that occurs in the above. As a result, when an operator or a trolley moves on a suspended scaffold, a step or an angular displacement formed between the scaffold plates 1 can be made smaller than before. Therefore, the suspension scaffolding formed of the scaffolding board 1 of the present embodiment can effectively prevent the inconvenience of the operator's stumbling and the stop of the carriage.

  In order to form the suspended scaffolding by the scaffolding board 1 of the present embodiment, as shown in FIG. 3, the scaffolding boards 1A and 1B are arranged and fixed in the short side direction, and the scaffolding boards 1A and 1A, which are adjacent to each other in the long side direction, are fixed. Connect 1C to each other. FIG. 10 is a plan sectional view showing a short side connecting portion for connecting and fixing the scaffolding plate 1 in the short side direction, and FIG. 11 is a sectional view taken along the line E-E ′ in FIG. 10. FIG. 10 is a sectional view taken along the line F-F ′ in FIG. 11. The short side connecting portion is arranged at the center of the short sides of the scaffolding plate body 4, and is built in both ends of the central member 11 of the hollow shape members forming the scaffolding plate 1. The short side connecting portion has a rectangular opening 39 formed in the end face 38 of the short side of the scaffolding plate body 4, an insertion chamber metal fitting 50 forming a passage / insertion chamber connected to the opening 39, and the insertion chamber metal fitting 50. A short side connector 51 which is housed in the passage / insertion chamber and whose tip can be retracted from the opening, and a short side fixing mechanism 42 for fixing the short side connector 51 inserted in the passage / insertion chamber. Prepare

  The passage-cum-insertion chamber formed inside the insertion chamber fitting 50 accommodates the short-side connector 51 and has a shape and a size that allows the short-side connector 51 to move in the long-side direction. Note that, in FIG. 10, the illustration of the ceiling portion of the insertion chamber fitting 50 that also serves as the passage is omitted. The short side connector 51 housed in the passage / insertion chamber is formed in a convex shape in which the width on the distal end side is narrower than the width on the proximal end side in plan view, and the fixture 44 of the short side fixing mechanism 42 is attached to the distal end portion. Is formed with a short side fixing hole 52. Further, on the base end side of the short side connecting body 51, an operating rod 53 operated by an operator to move the short side connecting body 51 in the long side direction is provided. In the insertion chamber fitting 50, an operation elongated hole 56 extending in the long side direction is formed in the ceiling portion of the passage / insertion chamber. The operation long hole 56 is formed to have substantially the same size as the advancing / retreating operation hole 41 formed in the central member 11 in a plan view. The operation rod 53 of the short side connecting body 51 is inserted into the operation long hole 56 of the insertion chamber metal fitting 50, and the upper end of the operation rod 53 is exposed from the forward / backward operation hole 41 of the central member 11 to the outside. In addition, it is located inside the central member 11. As a result, a tool such as Shino is inserted from the surface of the scaffolding board 1 into the advancing / retreating operation hole 41, and the operating rod 53 is moved along the advancing / retreating operation hole 41 by this tool, so that the short-side connecting body 51 also serves as a passage. It is possible to move in the insertion chamber and emerge from the opening 39.

  The short-side fixing mechanism 42 is configured such that, when the front end of the short-side connecting body 51 of the scaffolding plate 1 arranged adjacent to each other in the long-side direction is inserted into the passage / insertion chamber, the short-side connecting body 51 has a front end. To fix the scaffolding plates 1 adjacent to each other in the long side direction. The short side fixing mechanism 42 has a guide metal fitting 43 which is disposed on the front end side and the front surface side of the insertion chamber metal fitting 50 and which forms a guide passage inside. A cylindrical fixture 44 formed so as to be movable in the guide passage is accommodated inside the guide fitting 43. In the guide fitting 43, a hole 46 is formed in a part of the bottom surface of the guide fitting at a central portion in the extending direction of the guide fitting, and a hole 57 communicating with the hole 46 of the guide fitting 43 is formed in the insertion chamber fitting. It is formed on the ceiling surface of the passage and insertion chamber of 50. The hole 46 of the guide fitting 43 and the hole 57 of the insertion chamber fitting 50 form a communication hole that connects the guide passage and the passage / insertion chamber. The guide metal fitting 43 is arranged such that the inner guide passage communicates with the short side fixing operation hole 40 on the surface of the central member 11.

  Similar to the fixture 34 of the long side fixing mechanism 9 of the second connecting portion, the cylindrical fixture 44 has a guide holding hole penetrating in the radial direction and extending from the axial center to the base end. A holding rod, both ends of which are fixed to the guide fitting 43, is inserted into the guide holding hole. As a result, the fixing tool 44 is held in the guide passage on one end side of the guide passage, and is dropped and inserted into the communication hole on the other end side of the guide passage. Further, on the upper side surface of the fixture 44, which is the surface facing the short side fixing operation hole 40, an engagement hole 45 is formed in which the tip end of a tool such as a Shino can be engaged. The tip of the tool inserted from the surface of the scaffolding plate 1 through the short side fixing operation hole 40 is engaged with the engaging hole 45 to move the fixing member 44 back and forth in the guide passage, and to drop and pull up to the communication hole. It is designed to be operated. A short side fixing mechanism 42 is formed by the guide fitting 43, the fixing tool 44, the communication hole, the holding rod and the like.

  12A and 12B are plan cross-sectional views showing a state of a short side connecting portion in which two scaffolding plates 1A and 1C adjacent to each other in the long side direction are connected and fixed. 12A and 12B both show the center portions in the short side direction of the first scaffolding plate 1A and the third scaffolding plate 1C arranged so that the end faces 38 of the short sides are in contact with each other. In FIG. 12A, the short side coupling body 51 of the first scaffolding plate 1A is inserted into the passage / insertion chamber of the third scaffolding plate 1C. More specifically, when the tip of the short side connecting body 51 of the first scaffolding board 1A is inserted into the passage-cum-insertion chamber of the third scaffolding board 1C, the short side connecting body 51 of the first scaffolding board 1A is inserted. The tip portion is located below the short side fixing mechanism 42 of the third scaffolding plate 1C. In this state, the fixing tool 44 of the short side fixing mechanism 42 of the third scaffolding plate 1C is operated by the tip of the chin inserted into the short side fixing operation hole 40, and falls into the hole 46 of the guide fitting 43 to communicate. It is inserted through the hole. As a result, the tip of the fixture 44 of the third scaffolding plate 1C is inserted into the short side fixing hole 52 of the short side connecting body 51 of the first scaffolding plate 1A. In this way, the fixing tool 44 of the third scaffolding board 1C engages the short side connecting body 51 of the first scaffolding board 1A into the passage / insertion chamber so that the first scaffolding board 1A and the third scaffolding board 1C are separated from each other. Fixed to each other.

  On the other hand, in FIG. 12B, the short side coupling body 51 of the third scaffolding plate 1C is inserted into the passage / insertion chamber of the first scaffolding plate 1A. More specifically, when the tip of the short side connecting body 51 of the third scaffolding board 1C is inserted into the passage-cum-insertion chamber of the first scaffolding board 1A, the short side connecting body 51 of the third scaffolding board 1C is inserted. The tip portion is located below the short side fixing mechanism 42 of the first scaffolding plate 1A. In this state, the fixture 44 of the short-side fixing mechanism 42 of the first scaffolding plate 1A is operated by the tip of the chin inserted into the short-side fixing operation hole 40 and drops into the hole 46 of the guide fitting 43 to communicate. It is inserted through the hole. As a result, the tip of the fixture 44 of the first scaffolding plate 1A is inserted into the short side fixing hole 52 of the short side connecting body 51 of the third scaffolding plate 1C. In this way, the fixing tool 44 of the first scaffolding plate 1A engages the short side connecting body 51 of the third scaffolding plate 1C into the passage / insertion chamber, and the first scaffolding plate 1A and the third scaffolding plate 1C are connected. Fixed to each other.

  As described above, the first scaffolding plate 1A and the third scaffolding plate 1C adjacent to each other in the long side direction are mutually inserted by inserting one of the short side coupling bodies 51 into the other passage / insertion chamber. Can be fixed. Therefore, of the first scaffolding board 1A and the third scaffolding board 1C, the short side connecting body 51 and the fixing tool 44 are operated to fix the first scaffolding board 1A and the third scaffolding board 1C. can do.

  In the scaffolding plate 1 of the present embodiment, the scaffolding plates 1 and 1 that are adjacent to each other in the long side direction can be connected and fixed to each other by the short side connecting body 51 incorporated in the scaffolding plate 1. Therefore, when fixing the scaffold plates 1 and 1 to each other, a separate component such as a clamp is not necessary, and the number of components forming the suspension scaffold can be reduced. Further, it is possible to prevent the parts from falling from the hanging scaffold.

  FIG. 13A is a plan view showing an assembly block of a suspension fitting 65 as a support fitting built in the scaffolding plate 1, and FIG. 13B is a cross-sectional view showing the assembly block 61 of the suspension fitting 65. FIG. 13B is a sectional view taken along the line G-G ′ in FIG. 13A. The assembly block 61 of the hanging metal fitting 65 has two mold members 62 and 63 fixed with a gap formed between them, and inside the mold members 62 and 63 so as to cross the gap between these two mold members 62 and 63. The rotary support shaft 64 is provided. In the gap between the two mold members 62, 63, a suspending metal fitting 65 formed of an oval ring is disposed as a supporting metal fitting, and the suspending metal fitting 65 has one end side inserted through the rotary support shaft 64. There is. On one of the mold members 63, a notch 66 is formed at a position facing the gap. The assembly block 61 is inserted into the central member 11 and fixed with rivets, bolts and nuts. The fixing position of the assembly block 61 in the central member 11 is adjusted so that the hanging metal fitting 65 faces the metal fitting operating hole 60 formed in the surface of the central member 11. The metal fitting operating hole 60 is formed in a shape along the gap of the assembly block 61 and the notch 66.

  When the hanging metal fitting 65 is used, the operator inserts the tip of a tool such as Shino into the metal fitting operating hole 60 from the surface of the scaffolding plate 1 and engages it with one end of the hanging metal fitting 65. Pull out. As a result, the hanging metal fitting 65 rotates around the rotary support shaft 64, and one end side of the hanging metal fitting 65 projects from the surface of the central member 11. When the hanging metal fitting 65 is pulled out from the central member 11, the notch 66 is formed in the mold material 63 of the assembly block 61, so that the tool can be easily engaged with the hanging metal fitting 65 and pulled out. The scaffolding board 1 is suspended by connecting the chain 24 to the suspension metal fittings 65 protruding from the surface of the central member 11. The hanging metal fitting 65 as the supporting metal fitting is not limited to the purpose of suspending the scaffolding board 1, and is gripped when the scaffolding board 1 is transported by an operator, or the scaffolding board 1 is loaded on a transportation vehicle, for example. It can be used for various purposes, such as being fixed with a wire or rope when it is used. Further, when the hanging metal fittings 65 are not used, they can be housed so as to be rotated around the rotation support shaft 64 so as to be submerged in the central member 11, so that the protrusions from the surface of the scaffolding plate 1 are eliminated and the scaffolding plate 1 It is possible to increase the safety when performing work. Further, since the hanging metal fitting 65 as the supporting metal fitting is built in the scaffolding board 1, when suspending or supporting the scaffolding board 1, separate parts such as a clamp and a handle are not required. The number of parts to be formed can be reduced. Further, it is possible to prevent the parts from falling from the hanging scaffold.

  When the scaffolding plate 1 of the present embodiment is suspended by the chain 24, eye bolts or the like connected to the chain are screwed into the bolt holes 80. The bolt hole 80 is formed so as to penetrate the surface of the central member 11 forming the scaffolding plate 1, and communicates with a female screw block fixed inside the central member 11. The female screw block is an assembly block having a shape that can be fitted into the hollow portion of the central member 11, and a screw hole having a female screw is formed at a position facing the bolt hole 80 of the central member 11. This female screw block is fitted inside the central member 11 and fixed with rivets, bolt nuts, etc., so that male screws such as bolts inserted in the bolt holes 80 can be screwed into the screw holes. ing. As a result, male screws such as bolts are fixed to the scaffolding plate 1. Here, the female screw block may be formed by combining a mold member and a nut, or may be formed by a cast body. Further, in the present embodiment, the eyebolt or the like for suspending the scaffolding plate 1 is screwed into the screw hole of the female screw block through the bolt hole 80, but other parts having a male screw are not included in the bolt hole 80 and the female hole. It may be screwed into a screw hole of the screw block.

  FIG. 14 is a cross-sectional view showing a sliding fitting portion 90 that is a portion in which a plurality of hollow frame members forming the scaffolding plate 1 are connected to each other. This cross-sectional view is a cross section in the short side direction in the vicinity of the short side 3 of the scaffolding plate 1. The sliding fitting portion 90 of the scaffolding plate 1 includes the middle member 11 and the middle members 12 and 13 extending in the long side direction, the middle member 12 and the first end member 14, and the middle member 13. And the second end material 15 are formed respectively. FIG. 14 shows a sliding fitting portion 90 between the central member 11 and the intermediate member 13. As shown in FIG. 14, the sliding fitting portion 90 has a fitting groove 75 formed on the front and back surfaces of both ends in the short side direction of the central member 11, that is, the width direction, and the fitting groove 75 in the fitting groove 75. It is formed with the front end portion 72 of the flange of the arranged intermediate member 13. It should be noted that FIG. 14 shows only one fitting groove 75 on the front side of the central member 11 in the short side direction.

  The fitting groove 75 of the central member 11 has an opening near the end in the width direction in the cross-sectional view of FIG. 14, and extends inward from this end in parallel with the surface. A flange extending in parallel to the surface of the central member 11 is inserted from the opening of the fitting groove 75, and the tip portion 72 of the flange is housed inside the fitting groove 75 and fitted therein. At the tip portion 72 of the flange of the intermediate member 13 that fits in the fitting groove 75, there are a tip and engaging claws 73, 73 extending toward the bottom side of the fitting groove 75 slightly inward from the tip. It is provided. The claws 73, 73 extend in the long side direction of the intermediate member 13 and prevent the short side direction from coming off. The number of engaging claws 73 may be one, or may be three or more.

  An elongated hole 76 extending parallel to the short side is formed inside the tip of the flange of the intermediate member 13. A rivet 70 extending through the end of the central member 11 and extending in the thickness direction is inserted into the elongated hole 76. The rivet 70 has a rivet head diameter larger than the width of the long hole 76. The length of the rivet 70 is formed to be slightly larger than the total thickness of the end portions of the central member 11 and the front and back flanges of the intermediate member 13. Thereby, the flange of the intermediate member 13 is slidable in the direction of the short side with respect to the end of the central member 11. Further, the length of the long hole 76 defines the sliding distance of the flange of the intermediate member 13 with respect to the end portion of the central member 11. As a result, the distance between the center of the central member 11 in the short side direction and the center of the intermediate member 13 in the short side direction can be changed within a predetermined range.

  The sliding fitting portion 90 between the central member 11 and the intermediate member 13 is provided with elongated holes 76 and rivets 70 inserted through the elongated holes 76 at both ends and the center in the long side direction. A sliding fitting portion 90 formed between the central member 11 and another intermediate member 12, between the intermediate member 12 and the first end member 14, and between the intermediate member 13 and the second end member 15. Is also formed similarly to the sliding fitting portion 90 between the central member 11 and the intermediate member 13. Thereby, the distance between the central member 11 and the intermediate member 12, the distance between the intermediate member 12 and the first end member 14, and the distance between the intermediate member 13 and the second end member 15 are It can be changed within a predetermined range in the short side direction of the member. The distance between these hollow members can be set to different values at different positions in the long side direction. By utilizing such characteristics of the sliding fitting portion 90, it is possible to adjust the shape of the scaffolding plate 1 in the plane.

  FIG. 15 shows a sliding fitting portion 90 located at a position where the central member 11, the intermediate members 12 and 13, the first end material 14 and the second end material 15 are adjacent to each other, and one short side 3a is a distance between them. Is a plan view showing a state of the scaffolding plate 1 in which the distance between the scaffolds 1 is adjusted to be small while the distance between the other short sides 3b is adjusted to be large. As shown in FIG. 15, the scaffolding plate 1 can be formed into a fan shape by adjusting the sliding fitting portion 90 so that one short side 3a is short and the other short side 3b is long. The fan-shaped scaffolding board 1 can obtain a suspension scaffold having substantially no gap when forming a curved suspension scaffold along a bridge without using a gap closing material as a separate component as in the conventional case. . Further, in the scaffolding plate 1 of this embodiment, the distance between the hollow shape members by the sliding fitting portion 90 can be adjusted, so that the shape of the scaffolding plate 1 can be adjusted to match the curvature of the curve. You can Therefore, various suspension scaffolds having curves of various curvatures can be manufactured without forming a gap. Further, since the scaffolding plate 1 of the present embodiment does not require a separate component for closing the gap formed between the scaffolding plates 1, the suspension scaffolding can be formed with a small number of components. In addition, it is possible to prevent the inconvenience of dropping a component or a tool during the work of closing the gap with another component such as a gap closing material. Here, the scaffolding plate 1 of the present embodiment is not limited to the fan shape, and may be adjusted to other shapes.

  In the above-described embodiment, the scaffolding plate 1 has the scaffolding plate body 4 formed by fitting a plurality of hollow frame members in the width direction, but the scaffolding plate body 4 has a structure using the hollow frame members. It is not limited, and may be formed by combining a frame and a floor board, for example. That is, the scaffolding board of the present invention has a first connecting portion having a protrusion formed over the entire length of one long side and a second connecting portion having an insertion hole formed over the entire length of the other long side. The structure of the scaffolding plate main body is not particularly limited as long as the structure is provided.

  Further, in the above-described embodiment, the scaffolding plate 1 includes a scaffolding plate body 4 formed by fitting a plurality of hollow frame members in the width direction, and having a protrusion formed over the entire length of one long side. Although the first connecting part and the second connecting part having the insertion hole formed over the entire length of the other long side are formed, the structure for connecting the scaffolding plates to each other is the first connecting part and the second connecting part. Not limited. That is, in the scaffolding plate of the present invention, as long as the scaffolding plate body is formed by fitting a plurality of hollow frame members in the width direction, the means for connecting the scaffolding plates to each other is not particularly limited.

  Moreover, although the case where the suspension scaffolding is formed by using the scaffolding plate 1 in the above-described embodiment has been described, the scaffolding plate of the present invention is applicable to form various forms of scaffolding other than the suspension scaffolding.

  The present invention is not limited to the embodiments described above, and many modifications can be made by a person having ordinary skill in the art within the technical idea of the present invention.

1 scaffolding board 2 long side 3 short side 4 scaffolding board main body 5 protruding part 6 insertion hole 7 fixing hole for protruding part 8 long side fixing operation hole 9 long side fixing mechanism 10 hanging scaffolding 11 central material 12, 13 intermediate material 14 1st End material 15 Second end material 40 Short side fixing operation hole 41 Forward / backward operation hole 42 Short side fixing mechanism 60 Metal fitting operating hole 70 Rivet 80 Bolt hole 90 Sliding fitting part

Claims (12)

A rectangular plate-shaped scaffolding board body having long sides and short sides,
A first connecting portion provided on one long side of the scaffolding plate body, having a projecting portion that projects from this end face and extends over the entire length of the long side;
A second hole provided on the other long side of the scaffold plate body, having an insertion hole into which the projecting portion of the scaffold plate arranged adjacent in the short side direction is inserted and which extends over the entire length of the long side. A scaffolding board having a connecting part,
When the first connecting portion and the second connecting portion are connected between the adjacent scaffolding plates, a moment load is transmitted in the short side direction between the adjacent scaffolding plates via the first connecting portion and the second connecting portion. Is formed as
In the vicinity of the long side where the second connecting portion is provided, a fixing mechanism for fixing the protruding portion of the first connecting portion inserted into the insertion hole of the second connecting portion so as not to be detachable from the inside of the insertion hole is provided. And
The fixing mechanism is provided on the upper side of the insertion hole in the scaffolding plate body, and has a guide passage partly formed with a communication hole communicating with the insertion hole; and the communication hole movable in the guide passage. And a fixture formed so that it can be inserted into
The protruding portion of the first connecting portion is formed with a fixing insertion hole into which the fixing tool can be inserted,
When the protruding portion of the first connecting portion is inserted into the insertion hole of the second connecting portion, the tip of the fixing tool inserted into the communication hole of the guide passage is inserted into the fixing insertion hole of the protruding portion. By doing so, the scaffolding plate is characterized in that the protrusion of the first connecting portion and the insertion hole of the second connecting portion are engaged and fixed by this fixing tool . The scaffolding plate according to claim 1,
A scaffolding board characterized in that it has a protrusion projecting to the surface side of the scaffolding board at the tip of the projecting portion of the first connecting portion. The scaffolding plate according to claim 2,
A scaffolding plate having a protrusion protruding inside the insertion hole at the edge of the insertion hole of the second connecting portion. The scaffolding plate according to claim 1,
A scaffolding plate characterized by having a concave portion on the surface of the protruding portion of the first connecting portion, with which an edge portion of the insertion hole of the second connecting portion of the scaffolding plate disposed adjacent thereto is engaged. The scaffolding plate according to claim 1 ,
A scaffolding plate, wherein a fixture of the fixing mechanism is formed so as to be operable to be inserted into and removed from the communication hole through an operation hole formed in a surface of the scaffolding plate body. A rectangular plate-shaped scaffolding board body having long sides and short sides,
A first connecting portion provided on one long side of the scaffolding plate body, having a projecting portion that projects from this end face and extends over the entire length of the long side;
A second hole provided on the other long side of the scaffold plate body, having an insertion hole into which the projecting portion of the scaffold plate arranged adjacent in the short side direction is inserted and which extends over the entire length of the long side. Connection
A scaffolding board with
When the first connecting portion and the second connecting portion are connected between the adjacent scaffolding plates, a moment load is transmitted in the short side direction between the adjacent scaffolding plates via the first connecting portion and the second connecting portion. Is formed as
The short side of the scaffolding plate main body is provided with a short side connecting portion for connecting with the short side of the scaffolding plate that is arranged adjacently,
The short side connecting portion is
An opening formed in the end face of the short side of the scaffolding plate body,
A short side coupling body formed so that it can appear and disappear from the opening,
A passage and insertion chamber formed inside the scaffolding plate body, the short side connecting body passing through the opening and passing through, and the short side connecting body of the short side connecting portion of the adjacent scaffolding plate being inserted,
An accommodating chamber that is connected to the inner side of the passage-cum-insertion chamber and accommodates the short side coupling body,
A scaffolding board, comprising: a fixing mechanism for fixing the short side connecting body inserted in the passage / insertion chamber. The scaffolding plate according to claim 1,
A scaffolding board characterized in that the scaffolding board body is formed by arranging a plurality of hollow members extending in the long side direction in the short side direction and fitting with each other. The scaffolding plate according to claim 7 ,
A scaffolding board characterized in that the hollow shape forming the main body of the scaffolding board is an extruded shape made of aluminum. The scaffolding plate according to claim 7 ,
The scaffolding plate body is formed such that the fitting length between adjacent hollow members can be changed in the short side direction, and the fitting length in the short side direction is different at different positions in the long side direction. Scaffolding board characterized by being formed so that it can be set. The scaffolding plate according to claim 7 ,
A scaffolding plate, wherein an annular support metal fitting is housed inside the hollow shape member so as to be retractable from a metal fitting hole formed on the surface of the scaffolding board body. The scaffolding plate according to claim 7 ,
The protrusion of the first connecting portion, which is inserted into the insertion hole of the second connecting portion, is fixed to the inside of the hollow shape member that forms the long side provided with the second connecting portion so as not to be removed from the inside of the insertion hole. A scaffolding board characterized in that an assembly block of a fixing mechanism is fitted and housed. A method of forming a suspended scaffold using the scaffold plate according to claim 1,
Placing the first scaffolding plate horizontally,
A step of standing the second scaffolding plate on the protrusion of the first connecting portion of the first scaffolding plate with the end face of the other long side of the scaffolding plate body in contact.
As the second scaffold plate is rotated and laid down on the protrusion of the first connecting portion of the first scaffold plate, the tip of the protruding portion of the first connecting portion of the first scaffold plate, Inserting the second scaffold plate into the insertion hole of the second connecting portion,
The second scaffolding plate is drawn to the first scaffolding plate, and the end face of the scaffolding plate body of the second scaffolding plate is brought into close contact with the end face of the scaffolding plate body of the first scaffolding plate to form the second scaffolding plate. And a step of fitting the protrusion of the first connecting portion of the first scaffolding plate into the insertion hole of the second connecting portion of the scaffolding plate.

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