JP7325048B2 - Panel-like structures and suspended scaffolding - Google Patents

Description

The present invention relates to a panel-like structure and suspended scaffolding.

When working on bridges, bridge girders, etc., there are often roads, rivers, etc. underneath them, so temporary scaffolding cannot be erected from the ground. Therefore, suspended scaffolds suspended from bridges and bridge girders are used. As suspended scaffolds, for example, there are suspended scaffolds described in Patent Documents 1 to 3.

The suspended scaffolding of Patent Document 1 is of a single-tube scaffolding system.

The suspended scaffolding described in Patent Documents 2 and 3 is of a panel suspended scaffolding method, and is a method of constructing a scaffolding with panels that unitize the lower structure of the single-tube scaffolding. In other words, it is a panel-shaped structure in which floor materials such as checkered steel plates and expanded metal are fixed and integrated with a framework of metal round pipes and roughly rectangular square pipes. It is a construction method that expands the scaffolding area in the horizontal direction by connecting it vertically and horizontally while suspending it with a chain (or rope) with a hook that is suspended from.

JP-A-11-13275 JP-A-10-311137 JP 2015-28285 A

The method described in Patent Document 1 is a construction method in which parts (single pipes, scaffolding boards, chains, etc.) are connected one by one with connecting metal fittings (clamps, etc.). Temporary installation and removal work is extremely troublesome, and the work is troublesome and dangerous (requires a safety net).

The methods described in Patent Documents 2 and 3 can considerably avoid construction and danger during temporary construction/removal work that requires skill, unlike the single pipe scaffolding method described in Patent Document 1.

However, the weight of the panel-like structure itself is heavy, and transportability and handling (connection method) on a temporary scaffolding are regarded as problems.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a panel-like structure capable of reducing weight while maintaining necessary bending strength and rigidity, and a suspended scaffold using the same.

A panel-like structure according to one aspect of the present invention is a panel-like structure suspended by chains with hooks, and is a hollow body having (A) a top plate, a bottom plate, a pair of side plates and a pair of end plates. The top plate, the bottom plate, and the pair of side plates extend in a first direction, the pair of side plates are spaced apart in a second direction intersecting the first direction, and the top plate and the bottom plate, the top plate and the bottom plate are spaced apart in a third direction intersecting the first direction and the second direction, and the pair of end plates are connected to the (B) the hollow body arranged between the top plate and the bottom plate and reinforcing the hollow body spaced apart in the first direction and connecting the top plate and the bottom plate; and a pair of reinforcing members extending in the first direction and sandwiching the center line of the top plate extending in the first direction when viewed from the third direction. are spaced apart in a second direction that intersects the first direction, and the pair of reinforcing members includes a first flange that is arranged on the top plate side and a second flange that is arranged on the bottom plate side. A flange and a web connecting the first flange and the second flange.

In the above configuration, the hollow body can be reinforced while supporting the top plate and the bottom plate on both sides of the center line with the pair of reinforcing members. Therefore, it is possible to reduce the weight while maintaining necessary bending strength and rigidity.

The top plate is provided with a recess for a hanging metal fitting, in which the chain with a hook is attached and a hanging metal fitting is arranged in the first direction, is formed on the center line, and the recess for the hanging metal fitting is formed in the first direction. , and the pair of reinforcing members may be arranged on both sides of the recessed part for hanging fitting when viewed from the third direction.

In this case, even if the panel-like structure is suspended by attaching the chains with hooks to the hanging fittings arranged in the recessed parts for hanging fittings, the pair of reinforcing members can maintain bending strength and rigidity.

A slide hole for sliding the suspension fitting in the first direction may be formed in the first bottom portion of the recess for the suspension fitting.

In this case, since the hanging metal fitting can be slid in the first direction, the flexibility of the suspension position of the panel-like structure is improved.

A panel-like structure according to one embodiment further includes a hanging metal plate to which the chain with hook is attached, and the hanging metal plate comprises a first metal plate having a rectangular shape when viewed from the third direction, and the first metal plate. a slide metal fitting having a pair of first bolts spaced apart along the longitudinal direction and fixed in a state of penetrating the first metal plate in the thickness direction; A shackle arranged on the threaded portion side of the bolt, and a bending plate for fixing the shackle to the slide fitting, the pair of first holes through which the pair of first bolts are passed are formed, and the A region between the pair of first holes is attached to the bending plate bent so as to form a space between the slide fitting and the pin shaft of the shackle, and the pair of first bolts. and a pair of nuts for fixing the bending plate to the slide fitting, and the bottom plate may be formed with an insertion opening for inserting the slide fitting.

In this case, the slide metal fitting is inserted into the hollow body through the insertion opening, and the slide metal fitting is arranged so that the pair of bolts protrude from the slide hole. After that, a bending plate is arranged so as to cover the pin shaft of the shackle while passing a pair of first bolts through the pair of first holes, and then a pair of nuts are fitted to the pair of first bolts to remove the bending plate. fixed. Thereby, the hanging metal fitting can be installed in the hollow body. Furthermore, by loosening the pair of nuts, the hanger can be slid along the slide hole.

A panel-like structure according to one embodiment further includes a first connector for connecting the two panel-like structures in the second direction, and the length of the bottom plate in the second direction is equal to the length of the In a cross section that is shorter than the length of the top plate and perpendicular to the first direction, the hollow body has a first projecting portion and a second projecting portion on both sides of the bottom plate when viewed from the third direction, The first connector may be attached to the side opposite to the top plate in the first projecting portion.

In this case, in the panel-like structure, it is possible to prevent the first connector from protruding from the bottom plate side, so that the panel-like structure is easy to store, for example.

Each of the pair of side plates connects the first region connected to the top plate, the second region connected to the bottom plate, the first region and the second region, and extends in the third direction. and a crossing third region, and the first coupler may be attached to the third region of the side plate of the pair of side plates on the side of the first projecting portion.

The first connector is an arm extending in the second direction, and the second end opposite to the first end in the second direction is the first end of the pair of side plates. the arm attached to the third region of the side plate on the projecting portion side, the one end projecting from the hollow body in the second direction when viewed from the third direction; and a second metal plate. and a first boss portion fixed to the second metal plate and having a first female screw hole formed along the thickness direction of the second metal plate; and a first collar through which the locking bolt is passed, the locking bolt being screwed into the female threaded hole. the first collar disposed between the head of the bolt and the first boss; and a mounting unit for mounting the arm to the hollow body. , a boss hole passing through the first boss is formed, and the holder is screwed to the arm in a state in which the first boss is passed through the boss hole. The locking bolt is screwed via the first collar to the first boss portion protruding from the arm through the hole, and the first connector is attached to the first projecting portion. is formed with a recess for mounting, and the mounting unit is a fixing bracket mounted on the side of the arm opposite to the first protruding portion, and includes a third metal plate and the third metal plate. The fixing bracket having a pair of second bolts spaced apart and fixed in the first direction while penetrating in the thickness direction, and a washer plate disposed in the mounting recess, the fourth metal plate and a second boss portion fixed to the fourth metal plate and having a through hole, and the fourth metal plate has a pair of second holes through which the pair of second bolts are passed. The washer plate is formed with a portion, the positioning pin is inserted through the through hole of the second boss portion, and the pair of second bolts are fitted in the washer plate to fix the washer plate to the fixture. a pair of fixing nuts, and a pair of third holes through which the pair of second bolts are passed are formed on the second end side of the arm so as to be spaced apart in the first direction. A first pin hole through which the positioning pin is passed is formed in the third metal plate, and a second pin hole through which the positioning pin is passed is formed in the third metal plate. A pair of fourth holes for passing the pair of second bolts and a fifth hole for passing the positioning pins may be formed in the second bottom.

The two panel-like structures connected in the second direction are referred to as a first panel-like structure and a second panel-like structure, and the second panel-like structure receives the first connector of the first panel-like structure. Suppose that two panel-like structures are connected by . In this case, in the first connector, the locking bolt is provided on the first end side of the arm protruding from the hollow body when viewed from the third direction. Therefore, the first panel-like structure can be easily connected to the second panel-like structure using the fastening bolts. Also, the positioning pin is used to determine the position of the first connector.

The pair of third holes may be long holes extending in the second direction from the second end. In this case, when attaching the first connector to the first projecting portion via the attachment unit, the first connector can be attached to the first projecting portion without removing the mounting unit from the first projecting portion.

In the arm, a recess for temporary placement for temporarily placing the panel-like structure to be connected by the first connector may be formed in a region protruding from the hollow body when viewed from the third direction. good.

In this case, the two panel-like structures can be connected while temporarily placing the panel-like structures to be connected on the temporary placement concave portion.

A panel-like structure according to one embodiment further includes a receiver for receiving the first connector, and the first connector is provided on the side of the hollow body opposite to the first connector in the second direction. A receiving structure for receiving the tool is formed, and the receiving structure is formed on the top plate and formed on the opposite side of the receiving recess in which the receiving tool is received, and in the third region. the third bottom of the accommodation recess and the top of the protrusion are integrated, an embedded nut is embedded in the third bottom, and the receiver comprises: a slide washer having a fifth metal plate and a fourth boss fixed to the fifth metal plate and having a second female screw hole formed along the thickness direction of the fifth metal plate; a spring plunger for positioning fitted in the second female screw hole of the fourth boss portion; A hole portion and a seventh hole portion for sliding are formed, and the sixth hole portion includes a first region through which the head of the locking bolt passes, and a portion extending from the first region toward the seventh hole portion. and a second region having a width in the second direction narrower than that of the first region, the sixth hole extending in the first direction, and the receiver comprising: By inserting a bolt through hole 7 and fitting it into the embedded nut, it is arranged in the accommodation recess so as to be slidable in the first direction, and the third bottom is connected to the first connection by the receiving tool. In a first state before receiving a tool, an eighth hole for passing the locking bolt through a position facing the first region of the sixth hole, and the slide washer are arranged in the first direction. A third pin hole through which the spring plunger is passed in a state before being slid to define the position of the slide washer, and a third pin hole in which the slide washer is slid in the first direction from the first state to move the first coupler. A fourth pin hole may be formed through which the spring plunger passes and defines the position of the slide washer in the second state, which is the receiving state.

As described above, the two panel-like structures connected in the second direction are called the first panel-like structure and the second panel-like structure. In this case, the two panel-like structures can be connected by receiving the first connector of the first panel-like structure with the receiver of the second panel-like structure. The bottom of the accommodation recess of the receiving structure of the second panel-shaped structure is integrated with the top of the protrusion, and the third bottom of the accommodation recess is provided with a locking bolt of the first connector. An eighth hole is formed for passage. Therefore, the fastening bolt of the first connector of the first panel-like structure can be passed through the eighth hole from the projection side. In the first state, the slide washer is positioned so that the first area of the sixth hole of the slide washer is positioned above the eighth hole. also passes through the first region of the sixth hole in the slide washer. In this state, by sliding the slide washer into the second state, the locking bolt is relatively positioned in the second region of the sixth hole. Since the width of the second region in the second direction is narrower than that of the first region, the first panel-like structure and the second panel-like structure can be connected by screwing the fastening bolt.

A panel-like structure according to one embodiment further includes a pair of second connectors for connecting the two panel-like structures in the first direction, and when viewed from the third direction, the hollow body has the Both ends in the first direction are formed with a pair of second coupling recesses in which the pair of second couplings are arranged. The holding shafts are disposed and extend in the same direction as the direction in which the connecting pipe extends, and are provided with a pair of nuts spaced apart from each other. A pair of second collars disposed inside the connecting pipe outside the pair of nuts and in contact with the inner surface of the connecting pipe, and a pair of L angles disposed at both ends of the connecting pipe, through which the holding shaft passes. a first plate portion provided with a boss portion to be connected to the first plate portion, the side opposite to the side provided with the boss portion being in contact with the side surface of the second connector recess when viewed from the third direction; a second plate portion located on the side opposite to the connecting pipe with respect to the plate portion and screwed to the bottom plate of the hollow body.

When connecting two panel-like structures in the first direction, one panel-like structure is referred to as a first panel-like structure, and the other panel-like structure is referred to as a third panel-like structure. In this case, in the first direction, the first panel-like structure and the third panel-like structure are arranged such that the second connector of the first panel-like structure faces the second connector of the third panel-like structure. In addition, they are positioned so that the connecting pipes are parallel to each other. In this state, by connecting the connecting pipes of the second connecting members of the first panel-like structure and the third panel-like structure using, for example, a single pipe universal clamp, the two panel-like structures can be easily assembled in the first direction. You can connect your body. In addition, the weight of the second coupler configured as described above can be reduced.

Each of the top plate, the bottom plate, the pair of side plates, the pair of end plates, and the pair of reinforcing members may be integrally formed of a fiber-reinforced resin containing a fabric base material made of continuous reinforcing fibers. In this case, the weight of the panel-like structure can be reduced.

Each of the top plate, the bottom plate, the pair of side plates, the pair of end plates and the pair of reinforcing members may include a non-conductive continuous fiber base material made of aramid fiber or glass fiber. In this case, since the top plate, the bottom plate, the pair of side plates, the pair of end plates, and the pair of reinforcing members can have non-conductivity, electric shock can be prevented.

A suspended scaffolding according to another aspect of the present invention is a suspended scaffolding configured by connecting a plurality of the panel-like structures.

ADVANTAGE OF THE INVENTION According to this invention, the panel-shaped structure which can be lightened, and a suspended scaffold using the same can be provided, maintaining required bending strength and rigidity.

FIG. 1 is a perspective view showing a schematic configuration of a suspended scaffold according to one embodiment. FIG. 2 is a perspective view showing a schematic configuration of a panel-like structure according to one embodiment. 3 is a partially enlarged view of the panel-like structure shown in FIG. 2. FIG. FIG. 4 is an enlarged partial cross-sectional view for explaining the panel-like structure shown in FIG. FIG. 5 is a cross-sectional view along line VV in FIG. FIG. 6 is a perspective view of the hollow body of the panel-like structure shown in FIG. 2, viewed from the bottom plate side. 7 is a plan view of a mounting recess formed in the panel-like structure shown in FIG. 2. FIG. FIG. 8 is a plan view of a receiving recess of a receiving structure formed in the panel-like structure shown in FIG. 2. FIG. 9(a) is a drawing for explaining the layer structure of the top plate, FIG. 9(b) is a drawing for explaining the layer structure of the bottom plate, and FIG. 9(c) is a drawing for explaining the side plate. It is drawing for demonstrating a layer structure. FIG. 10 is a drawing showing the layer structure of the reinforcing member. FIG. 11 is an exploded perspective view of the hanger. FIG. 12 is an exploded perspective view of the first connector. FIG. 13 is an exploded perspective view of the first connector. FIG. 14 is a perspective view of a receiver that receives a first connector; 15 is an exploded perspective view of the receiver shown in FIG. 14. FIG. FIG. 16(a) is a drawing showing a state before the first connector is fixed by the receiver when connecting the two panel-like structures, and FIG. 16(b) is a view showing the two panel-like structures. 10 is a drawing showing a state after the first connector is fixed by the receiving tool at the time of connection of FIG. FIG. 17 is a drawing for explaining the configuration of the second connector. 18 is an exploded perspective view of the second connector shown in FIG. 17. FIG. FIG. 19 is a drawing for explaining a method of attaching the second connector to the recess formed in the hollow body. FIG. 20 is a drawing showing a step in a method for connecting two panel-like structures in the second direction. FIG. 21 is a drawing showing a post-process of the process shown in FIG. 21 in the method of connecting two panel-like structures in the second direction. FIG. 22 is a drawing showing a post-process of the process shown in FIG. 22 in the method of connecting two panel-like structures in the second direction. FIG. 23(a) is a drawing showing a post-process of the process shown in FIG. 22 in a method for connecting two panel-like structures in the second direction, and FIG. It is drawing which shows the post process of a). FIG. 24(a) is a drawing showing a post-process of the process shown in FIG. 23(b) in a method for connecting two panel-like structures in the second direction, and FIG. FIG. 24(a) is a drawing showing a post-process of FIG. 24(a), and FIG. 24(c) is a drawing showing a post-step of FIG. 24(b). FIG. 25 is a perspective view of a state in which two panel-like structures are connected in the second direction in FIG. 24(c). FIG. 26 is a drawing for explaining a method of connecting two panel-like structures in the first direction. FIGS. 27(a), (b), and (c) are for explaining a method of connecting the second connector of the two panel-like structures when the two panel-like structures are connected in the first direction. is a drawing of FIG. 28 is a drawing for explaining a modification of the second coupler. FIG. 29 is a perspective view of a second molding die for forming a member composed of a bottom plate, a pair of side plates and one end plate in manufacturing a panel-like structure. FIG. 30 is a perspective view of a first mold for forming a top plate in manufacturing a panel-like structure. FIG. 31 is a perspective view of a third mold for forming a reinforcing member in manufacturing a panel-like structure.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are omitted. The dimensional proportions of the drawings do not necessarily match those of the description.

As shown in FIG. 1, the suspended scaffolding 1 is a scaffolding suspended by chains 102 with hooks on a plurality of supporting members 101 extending in one direction. The supporting member 101 is, for example, an I-shaped girder extending in the longitudinal direction of the bridge extending in the extending direction of the supporting member 101 . The hooked chain 102 is usually made of metal, but if a rope made of aramid fiber is used for suspension, it is preferable in that electric shock can be prevented.

A suspended scaffolding 1 is constructed by connecting a plurality of panel-like structures 2 . When viewed from the thickness direction of the panel-like structure 2, the panel-like structure 2 has a rectangular shape.

For convenience of explanation, as shown in FIG. 1, the longitudinal direction of the panel-like structure 2 is called the X direction (first direction), and the width direction of the panel-like structure 2 intersecting the X direction is the Y direction (first direction). the thickness direction of the panel-like structure 2 intersecting the X direction and the Y direction (vertical direction or vertical direction when the suspended scaffolding 1 is suspended by the chain 102 with hooks) is the Z direction (third direction). direction). Although the X, Y and Z directions may intersect each other as described above, in this embodiment, the X, Y and Z directions are orthogonal unless otherwise specified. In a state in which the suspended scaffolding 1 is suspended from the supporting member 101, the supporting member 101 side is referred to as the "upward" direction when viewed from the suspended scaffolding 1 (or the panel-like structure 2), and the side opposite to the supporting member 101 is referred to as the "downward" direction. Also called

Furthermore, for convenience of explanation, when one of the two panel-like structures 2 connected in the Y direction is referred to as a panel-like structure 2A, the other panel-like structure connected to the panel-like structure 2A 2 may be referred to as a panel-like structure 2B. Furthermore, the panel-like structure 2 connected to the panel-like structure 2A in the X direction may be referred to as a panel-like structure 2C.

As shown in FIGS. 2 and 3, the panel-like structure 2 includes a panel body 3, a sling fitting 220 for receiving the chain with hooks 102, and two panels for connecting the two panel-like structures 2 along the Y direction. , a receiver 550 for receiving the first connector 300, and a second connector 700 for connecting the two panel-like structures 2 in the X direction. The weight per unit area of the panel-like structure 2 when viewed from the Z direction, with the projected area of the length of the long side×the length of the short side, is, for example, 12 kg/m ² or more and 17 kg/m ² or less.

The panel main body 3 will be described mainly with reference to FIGS. 2 to 10. FIG. As shown in FIGS. 2 to 5, the panel body 3 has a hollow, box-shaped hollow body 100 and a pair of reinforcing members 160 arranged in the hollow body 100 .

As shown in FIG. 2, the hollow body 100 has a substantially rectangular shape with the long side in the X direction when viewed from the Z direction. At both ends of the hollow body 100 in the X direction, recesses (second connector recesses) 103 are formed so that each end forms a U shape when viewed from the Z direction.

The slenderness ratio (W/L), which is the ratio of the length (W) in the Y direction and the length (L) in the X direction of the hollow body 100 (or panel body 3) when viewed from the Z direction, is given below. It satisfies the formula (1).
1/5≦W/L≦1/3 (1)

As shown in FIGS. 3, 4 and 5, the hollow body 100 includes a top plate 110, a bottom plate 120, a pair of side plates 130 and a pair of end plates 140. As shown in FIGS.

(Top board)
The top plate 110 is the top portion of the panel main body 3 (or the panel-like structure 2). The top plate 110 has a notch along the shape of the concave portion 103 when viewed from the Z direction. The top plate 110 is arranged so that the plate thickness direction is along the Z direction. In the top plate 110, a plurality of washer-equipped embedded nuts 640 (square washers with welded nuts) used when connecting the panel-like structure 2 are embedded.

<Bottom plate>
The bottom plate 120 is the bottom portion of the panel main body 3 (or the panel-like structure 2) and is arranged to face the top plate 110 . The bottom plate 120 has a notch along the shape of the recess 103 when viewed in the Z direction. The bottom plate 120 is arranged such that the plate thickness direction is along the Z direction.
The Y-direction length of the bottom plate 120 is shorter than the length of the top plate 110 . The length (width) W _B (see FIG. 4) of the short side of the bottom plate 120 in the Y direction relative to the length (width) W of the short side of the top plate 110 in the Y direction is given by the following equation (2). meet.
0.6≦W _B /W≦0.7 (2)

Overall height, which is the distance in the Z direction between the upper surface of the top plate 110 and the lower surface of the bottom plate 120 with respect to the length (W) of the short side of the hollow body 100 (or the panel-like structure 2) when viewed in the Z direction Height (H) satisfies the following formula (3), for example.
1/10≤H/W≤1/7 (3)

<Side plate>
A pair of side plates 130 are a pair of side portions of the panel main body 3 (or the panel-like structure 2) in the Y direction.

A pair of side plates 130 extend in the X direction and are arranged to face each other in the Y direction. The width of the bottom plate 120 in the Y direction is shorter than the width of the top plate 110 . Therefore, the side plate 130 has a plate shape bent, for example, in a crank shape in the Z direction, the Y direction, and the Z direction in a cross section that intersects the X direction. Specifically, the side plate 130 has a first region 131 connected to the top plate 110, a second region 132 connected to the bottom plate 120, and a third region connecting the first region 131 and the second region 132. 133.

Thus, the length of the bottom plate 120 in the Y direction is shorter than the length of the top plate 110, and each of the pair of side plates 130 has a crank shape. . Specifically, the hollow body 100 has a protruding portion (first protruding portion) 150A and a protruding portion (second protruding portion) 150B that protrude outward from both sides of the bottom plate 120 when viewed in the Z direction. A portion (a portion of the bottom plate 120) between the protruding portion 150A and the protruding portion 150B bulges downward.

A third region 133 of the side plate 130 on the overhanging portion 150A side is the lower surface of the overhanging portion 150A. A pair of protrusions 480 (see FIG. 6) are formed in the third region 133 functioning as the lower surface of the projecting portion 150A. The pair of protrusions 480 have a guide function when the pair of first connecting tools 300 are attached to the panel body 3 .

A third region 133 of the side plate 130 on the overhanging portion 150B side is the lower surface of the overhanging portion 150B. A pair of protrusions 485 extending in the Y direction and spaced apart in the X direction may be formed in the third region 133 forming the projecting portion 150B. The pair of protrusions 485 (see FIG. 6) has a guide function for avoiding positional deviation in the X direction when connecting the two panel-like structures 2 using the first connector 300. .

As shown in FIG. 6, a plurality of rectangular holes 490 may be formed spaced apart in the X direction in the third region 133 of the protruding portion 150A and the protruding portion 150B. The hole 490 is also a hole for hooking a hand when carrying and holding the panel-like structure 2 with the long side of the projecting part 150B facing down or when carrying the panel-like structure 2 horizontally.

<End plate>
As shown in FIGS. 2 and 3, the pair of end plates 140 are a pair of ends of the panel body 3 (or the panel-like structure 2) in the Z direction. A pair of end plates 140 extend in the Y direction, form, for example, a hat shape in a cross section intersecting the Z direction, and are arranged to face each other in the X direction. The plate thickness direction is a direction perpendicular to the cross section along the shape of the U-shaped recesses 103 formed at both ends in the X direction.

The hollow body 100 includes a pair of recesses 200 for mounting the hanging metal fittings 220 to the hollow body 100, a mounting recess 430 for mounting the first connector 300, and two panel-like structures in the Y direction. 2, the receiving structure for receiving the first connector 300 of one panel-like structure 2 (panel-like structure 2A) on the other panel-like structure 2 (panel-like structure 2B). 500.

[Concave part for hanging bracket]
As shown in FIGS. 2 to 4, the pair of hanging fitting recesses 200 are formed in the central portion of the top plate 110 in the Y direction. A pair of recesses 200 for hanging metal fittings are formed apart from each other in the X direction.

The hanging fitting concave portion 200 extends in the X direction and is formed along the center line of the top plate 110 (the center line extending in the X direction) when viewed from the Z direction. The hanging fitting recess 200 has, for example, an elongated hole shape when viewed from the Z direction. The Y-direction width and depth of the hanging-metal recess 200 are designed according to the size of the hanging metal fitting 220 arranged in the lifting-metal recess 200 . In other words, the width of the recess 200 for the hanging metal fitting is the width in which the shackle 250 of the hanging metal fitting 220 can be accommodated, and the depth is such that the head of the hanging metal fitting 220 protrudes from the upper surface of the top plate 110 when the shackle 250 is rotated and laid down and stored. Not deep.

As shown in FIGS. 3 to 5, a slide hole 210 is formed on the center line of the bottom (first bottom) 201 of the recess 200 for hanging fitting. The slide hole 210 is an elongated hole that penetrates the bottom portion 201 in the thickness direction (toward the inside of the panel body 3) and extends in the X direction. The length of the slide hole 210 in the X direction may be any length corresponding to the separation distance between the plurality of support members 101 . For example, the length of the slide hole 210 can be a length that can accommodate suspension positions from 0.8m to 2.5m.

A pair of insertion openings (see FIG. 6) 170 are formed in the bottom plate 120 at positions facing the pair of recesses 200 for hanging metal fittings. The pair of insertion openings 170 are holes for inserting metal fittings forming part of the hanging metal fittings 220 when the hanging metal fittings 220 are attached to the panel main body 3 .

[Mounting recess]
As shown in FIGS. 2 and 3 , the mounting recess 430 is formed corresponding to the mounting position of the first connector 300 . In this embodiment, two first connectors 300 are attached to the projecting portion 150A of the panel body 3 so as to be spaced apart in the X direction. Therefore, two mounting recesses 430 are provided in the protruding portion 150A so as to be spaced apart in the X direction. As shown in FIG. 5 , the bottom (second bottom) 431 of the mounting recess 430 is integrated with the third region 133 of the side plate 130 . As shown in FIG. 7, the bottom 431 has a hole (fifth hole) 431a, a hole (fourth hole) 431b, and a hole (fourth hole) used for attaching the first connector 300. ) 431c are formed. The hole 431a, the hole 431b, and the hole 431c are formed along the X direction in the order of the hole 431c, the hole 431a, and the hole 431b, as shown in FIG.

[Receiving structure]
As shown in FIGS. 2 and 3, the receiving structure 500 is provided on the projecting portion 150B on the side opposite to the first connector 300 in the Y direction. In this embodiment, the panel body 3 has two first connectors 300 , so the panel body 3 has two receiving structures 500 .

As shown in FIG. 5, the receiving structure 500 includes a housing recess 501 formed in the top plate 110 and a protrusion 502 formed in the third region 133 of the side plate 130 (when the third region 133 is viewed from below). includes recesses).

The bottom (third bottom) of the accommodation recess 501 and the top of the protrusion 502 are integrated, and the bottom of the accommodation recess 501 or the top of the protrusion 502) functions as a partition wall 503 separating the accommodation recess 501 and the protrusion 502. . As shown in FIG. 3 , a receiver 550 that receives the first connector 300 is arranged in the accommodation recess 501 . As shown in FIG. 8, a partition wall 503 (corresponding to the bottom of the housing recess 501 or the top of the projection 502) has two panel-like structures 2 (the panel-like structure 2A and the panel-like structure 2B). A hole (eighth hole) 510, a pin hole (third pin hole) 580a, and a pin hole (fourth pin hole) 580b are formed for use in connection by the one connector 300 . The hole portion 510 and the pin hole 580a and the pin hole 580b are formed along the X direction in the order of the pin hole 580b, the pin hole 580a and the hole portion 510. As shown in FIG. The hole portion 510 may be a hole whose length in the Y direction is longer than the length in the X direction. An embedded nut with washer 570 (a nut welded to a square washer) is embedded in the partition wall 503 on the side opposite to the pin hole 580a when viewed from the hole 510 .

[Reinforcement member]
As shown in FIGS. 4 and 5, the pair of reinforcing members 160 are arranged inside the hollow body 100 (panel body 3). The pair of reinforcing members 160 are arranged with a predetermined distance therebetween while sandwiching the center line of the top plate 110 (the center line extending in the X direction) when viewed in the Z direction. In this embodiment, the pair of reinforcing members 160 are arranged on both sides of the recessed portion 200 for hanging fitting when viewed from the Z direction. The reinforcing member 160 extends in the X direction of the hollow body 100 . The reinforcing member 160 may extend from one recess 103 to the other recess 103 of a pair of recesses 103 provided at both ends of the hollow body 100 when viewed in the Z direction.

Reinforcement member 160 has a pair of flanges (upper flange 161 and lower flange 162) and web 163. As shown in FIG. The upper flange (first flange) 161 is a plate-like member located on the top plate 110 side and in contact with the top plate 110 . The lower flange (second flange) 162 is a plate-like member located on the bottom plate 120 side and in contact with the bottom plate 120 . The upper flange 161 and the lower flange 162 are arranged such that their plate thickness direction is the Z direction. Web 163 is a plate-like member that connects upper flange 161 and lower flange 162 . The web 163 is arranged so that its thickness direction is the Y direction. A cross section of the reinforcing member 160 intersecting the X direction has, for example, an H shape or an I shape. Reinforcing member 160 is, for example, an H-shaped rib or an I-shaped rib.

(Panel body material)
The panel body 3 (specifically, the top plate 110, the bottom plate 120, the side plates 130, the end plates 140, and the reinforcing member 160) is made of fiber-reinforced resin or fiber-reinforced plastic containing a fabric base material made of continuous reinforcing fibers. may As a result, for example, it is possible to realize the panel-like structure 2 that is excellent in weather resistance and corrosion resistance, maintains high bending rigidity, is lightweight, and is easy to handle. Each of top plate 110, bottom plate 120, side plate 130, end plate 140 and reinforcing member 160 can be formed by a molding technique using a mold, for example. The bottom plate 120, the pair of side plates 130 and the pair of end plates 140 may be integrally formed.

Top plate 110, bottom plate 120, side plate 130, end plate 140, and reinforcing member 160 may be made of a non-conductive material. For example, the top plate 110, the bottom plate 120, the side plates 130, the end plates 140 and the reinforcing members 160 may comprise a material comprising a non-conductive continuous fiber matrix of aramid fibers or glass fibers. For example, each of top plate 110, bottom plate 120, side plate 130, end plate 140, and reinforcing member 160 may contain the non-conductive continuous fiber base material in an amount of 10% by mass or more and 40% by mass or less. Thereby, it is possible to obtain the panel-shaped structure 2 that does not conduct electricity while maintaining high bending rigidity.

Examples of the form of reinforcing fibers include substrates in which "short fibers having a fiber length of 1 to 3 mm", "mats", "cloths made of continuous fibers", and "strands" are appropriately combined.

The matrix resin for forming the fiber-reinforced resin is not particularly limited, but examples include thermosetting resins such as epoxy resins, unsaturated polyester resins, vinyl ester resins, polyethylene, polypropylene, nylon, ABS (acrylonitrile-butadiene-styrene ), PEEK (poly-ether-ether-ketone), and polyimide.

Molding methods for forming fiber-reinforced resin include vacuum, blow, stamping, BMC (bulk molding compound), SMC (sheet molding compound), transfer molding, and RTM (resin transfer molding), depending on the form of the reinforcing fiber. molding), hand lay-up molding, and the like.

9 and 10 are schematic diagrams showing an example of the layer structure when the panel main body 3 is made of fiber-reinforced resin. FIG. 9(a) is a diagram for showing an example of the layer structure of the top plate 110, and corresponds to an enlarged view of the region α1 in FIG. FIG. 9(b) is a diagram for showing an example of the layer structure of the bottom plate 120, and corresponds to an enlarged view of the region α2 in FIG. FIG. 9(c) is a diagram for showing an example of the layer structure of the side plate 130, and corresponds to an enlarged view of the region α3 in FIG. FIG. 10 is a diagram showing an example of the layer structure of the reinforcing member. Since the layer structure of the end plate 140 can be the same as the layer structure of the side plate 130, illustration thereof is omitted.

As shown in FIG. 9A, the top plate 110 can have a multi-layer structure in which multiple layers made of fiber-reinforced resin are laminated.

For example, the top plate 110 has a first layer 110a. In the first layer 110a, the 2a layer 110b and the 3a layer 110b and the 3a layer are formed on a region corresponding to the central portion between the overhanging portion 150A and the overhanging portion 150B (the portion of the top plate 110 overlapping the bottom plate 120 when viewed from the Z direction). A layer 110c is laminated, and a second b layer 110d and a third b layer 110e are laminated on regions corresponding to the projecting portions 150A and 150B, respectively. As described above, FIG. 9A corresponds to an enlarged view of the area α1 in FIG. is.

The first layer 110 a functions as the outer surface of the top plate 110 . The 2a-th layer 110b, the 3a-th layer 110c, the 2b-th layer 110d and the 3b-th layer 110e are layers arranged inside the first layer 110a in the hollow body 100 . The 2a-th layer 110b and the 3a-th layer 110c may be made of the same material or may be made of different materials. Similarly, the 2b layer 110d and the 3b layer 110e may be made of the same material or may be made of different materials.

When the 2a-th layer 110b and the 3a-th layer 110c are made of the same material, and the 2b-th layer 110d and the 3b-th layer 110e are made of the same material, the reinforcing member 160 is arranged on the top plate 110. The material can be selected so that the elastic modulus of the 2a-layer 110b (the 3a-layer 110c) located in the region is the largest.

As shown in FIG. 9B, the bottom plate 120 may also have a multi-layer structure in which multiple layers made of fiber-reinforced resin are laminated.

For example, the bottom plate 120 has a first layer 120a and a second layer 120b laminated to the first layer 120a. The first layer 120 a functions as the outer surface of the bottom plate 120 . The second layer 120b is a layer arranged inside the first layer 120a in the hollow body 100 . The second layer 120b may be formed of a material having a higher modulus of elasticity than the first layer 120a.

As shown in FIG. 9(c), the side plate 130 may also have a multi-layer structure in which multiple layers made of fiber-reinforced resin are laminated.

For example, the side plate 130 has a first layer 130a and a second layer 130b laminated on the first layer 130a. The first layer 130 a functions as the outer surface of the side plate 130 . The second layer 130b is a layer arranged inside the first layer 130a in the hollow body 100 . The second layer 130b may be formed of a material having a higher elastic modulus than the first layer 130a.

As shown in FIG. 10, the reinforcing member 160 has a first layer 160a and a second layer 160b. As shown in FIG. 10, when the reinforcing member 160 is a joint of two U-shaped members 160A and 160B having a U-shaped cross section perpendicular to the X direction, the first layer 160a is The second layer 160b, which is an outer layer of each of the U-shaped members 160A and 160B, is a layer laminated on the first layer 160a (or the inner surface of the first layer 160a).

When the reinforcing member 160 is a joined body of two U-shaped members 160A and 160B, the two U-shaped members 160A and 160B are arranged so that the regions corresponding to the webs 163 of the respective first layers 160a are in contact with each other. are spliced. The second layer 160b may be formed of a material having a higher modulus of elasticity than the first layer 160a.

As described above, when the 2a layer 110b and the 3a layer 110c are made of the same material, and the 2b layer 110d and the 3b layer 110e are made of the same material, the first layer 110a, the first layer 120a, the first layer 130a and the first layer 160a are formed of the same material, the 2a layer 110b (3a layer 110c) and the second layer 120b are formed of the same material, and the 2b layer 110d (3b layer 110e) , the second layer 130b and the second layer 160b may be formed of the same material.

[Hanging bracket]
The hanger 220 will be described with reference to FIG. 11 . The sling fitting 220 has a slide fitting 240 , a shackle 250 and a bending plate 270 .

The slide fitting 240 has a rectangular metal plate (first metal plate) 241 and a pair of bolts (first bolts) 230 . The pair of bolts 230 are arranged at regular intervals in the long side direction (the X direction in FIG. 11) of the metal plate 241 and fixed (eg, welded) through the metal plate 241 in the thickness direction. In the embodiment shown in FIG. 11, the pair of bolts 230 are attached to the metal plate 241 with the head 231 of the bolt 230 positioned on the lower surface side of the metal plate 241 and the threaded portion 232 of the bolt 230 protruding from the upper surface side. Fixed.

The shackle 250 is a component to which the hooked chain 102 is connected, and is arranged on the upper surface of the slide fitting 240 (on the screw portion 232 side). The shackle 250 is obtained with a U-shape. Shackle 250 may be a bow-shaped or straight-shaped shackle.

The bending plate 270 is a member for rotatably attaching the shackle 250 to the slide fitting 240 . The bending plate 270 has a pair of flat plate regions 271 and a bending region 272 connecting them. The degree of bending of the bending region 272 is such that the pin shaft 251 of the shackle 250 can rotate between the bending region 272 and the metal plate 241 of the slide fitting 240 with the bending plate 270 attached to the slide fitting 240. good. The bending plate 270 has, for example, an Ω shape. A pair of holes (first holes) 271 a through which the pair of bolts 230 are passed are formed in the pair of flat plate regions 271 .

The hanging metal fitting 220 is formed by arranging the pin shaft 251 of the shackle 250 with respect to the slide metal fitting 240, covering the pin shaft 251 with a bending region 272, passing the bolt 230 through the hole 271a, and fixing it with the screw nut 260. It is configured. A circumferential groove 285 is provided in the threaded portion 232 of the bolt 230 , and an E-shaped retaining ring 280 may be mounted in the circumferential groove 285 . Thereby, it is possible to prevent the screw nut 260 from coming off.

The hanger 220 is attached to the panel body 3 as follows.

The slide metal fittings 240 of the hanging metal fittings 220 are inserted into the panel main body 3 through the insertion openings 170 (see FIG. 6) formed in the bottom plate 120 . Therefore, it is sufficient that the insertion opening 170 is formed so that the slide fitting 240 can be inserted therein. Next, the pair of bolts 230 of the slide fitting 240 are protruded upward in the Z direction from the inside of the panel-like structure 2 into the recess 200 for hanging fitting. Specifically, a pair of bolts 230 are inserted into slide holes 210 provided in the bottom portion 201 of the recessed portion 200 for hanging fitting and protruded. In this state, the bending plate 270 is arranged with respect to the slide fitting 240 so that the pin shaft 251 of the shackle 250 is sandwiched between the bending regions 272 from above in the Z direction. At this time, the pair of bolts 230 are passed through the pair of holes 271a. After that, the screw nuts 260 are fitted to the pair of bolts 230 and screwed to complete the installation of the hanging metal fittings 220 . As described above, when using the E-shaped retaining ring 280 for preventing falling off, the E-shaped retaining ring 280 is mounted after screwing with the screw-retaining nut 260 .

In the configuration of the suspension fitting 220 and the suspension fitting recess 200, the distance between the support members 101 can be easily adjusted by loosening the screw nut 260, sliding the suspension fitting 220, and screwing it again. Furthermore, when the panel-like structure 2 is transported, or when it is suspended at one point in connection in the short side direction, the shackle 250 can be laid down and stored in the recess 200 for hanging fittings. It does not interfere with the work of In other words, it is possible to avoid the danger of falling due to being caught.

[First connector]
The first connector 300 is a connector (long side connector) for connecting two panel-like structures 2 (panel-like structure 2A and panel-like structure 2B) in the Y direction. As shown in FIG. 2 , the pair of first couplers 300 are arranged apart in the X direction on one of the pair of side portions of the panel body 3 in the Y direction. The pair of first couplers 300 are spaced apart in the X direction and arranged in a form protruding in the Y direction from the projecting portion 150A at right angles to the X direction.

As shown in FIG. 3 , the first connector 300 extends in the Y direction, and one end side in the Y direction is attached to the panel main body 3 by the attachment unit 400 . When the panel-like structure 2 is viewed from the Z direction, the other end side of the first connector 300 in the Y direction protrudes outward from the panel body 3 . In the description of the first connector 300, the side protruding from the panel main body 3 is called the front end, and the side fixed to the panel main body 3 (opposite to the front end) is also called the rear end.

The first coupler 300 will be described with reference to FIGS. 12 and 13. FIG. 12 is an exploded perspective view of the first connector 300, and FIG. 13 is an exploded perspective view of the first connector 300 when the first connector 300 is disassembled in more detail. The first connector 300 has an arm 320 , a fastening bolt 350 , a collar (spacer) 360 and a holder 330 .

Arm 320 extends in the Y direction. Arms 320 can be formed, for example, from materials similar to those exemplified for top plate 110, bottom plate 120, etc. (eg, fiber-reinforced resin including a woven substrate of continuous reinforcing fibers). Arm 320 may be non-conductive. In this case, the arm 320 may be formed of fiber-reinforced resin containing a non-conductive reinforcing fiber base material, for example. The cross-sectional shape of arm 320 perpendicular to the Y direction is, for example, an M shape. By making the cross-sectional shape of the arm 320 M-shaped, twisting is suppressed. The shape of the cross section may be rectangular or cylindrical.

The first end portion 320 a side of the arm 320 is the distal end portion side of the first connector 300 . The second end 320b side of the arm 320 is the rear end side of the first coupler 300 . The second end portion 320b side of the arm 320 is fixed to the projecting portion 150A.

The arm 320 has a top portion 321 and a pair of side portions 322 connected downward to the long sides of the top portion 321 . In one embodiment, the angle between top portion 321 and side portion 322 is substantially 90 degrees. The top portion 321 and the pair of side portions 322 can be integrally formed.

The top portion 321 has a groove (or recess) 321a extending in the Y direction in the central region in the X direction. The depth of the groove portion 321 a is shorter than the length of the side portion 322 . As shown in FIG. 13, on the bottom surface of the groove portion 321a, boss holes are formed in order from the first end portion 320a toward the second end portion 320b (the end portion opposite to the first end portion 320a in the Y direction). 395, a hole 396, and a pin hole (first pin hole) 397 are formed.

The boss hole 395 is a hole through which the boss 332 of the holder 330 is passed. A hole 396 is a hole for attaching the holder 330 to the arm 320 . The pin hole 397 is a hole used for positioning the first coupler 300 in the Y direction.

Concave portions (temporary placement concave portions) 380 may be formed in portions of the top portion 321 on both sides of the groove portion 321a in the X direction (hereinafter referred to as “flange portions 321b”). The concave portion 380 can be formed in a region of the arm 320 that protrudes from the panel body 3 (hereinafter also referred to as a “protruding region”) when viewed in the Z direction. More specifically, it may be formed closer to the second end 320b than the position of the holder 330 in the protrusion area.

The concave portion 380 functions as a position guide that prevents the two panel-like structures 2 from being shifted back and forth in the Y direction when the long sides of the two panel-like structures 2 are connected. Due to the formation of the concave portion 380, when connecting the long sides of the two panel-like structures 2, the projecting portion 150B of the long side of the panel-like structure 2 to be connected is temporarily placed in the concave portion 380. It is also possible to

A pair of holes (third holes) 390 for attaching the arm 320 to the panel body 3 (specifically, the projecting portion 150A) is formed on the second end portion 320b side of the flange portion 321b. The hole portion 390 is formed in the flange portion 321b and may be an elongated hole extending in the Y direction from the second end portion 320b. Since the hole portion 390 is an elongated hole, the arm 320 can be attached to and detached from the panel body 3 without removing the fixing bracket 410 .

The holder 330 has a configuration in which a cylindrical boss portion (first boss portion) 332 is fixed (for example, welded) to a metal plate (second metal plate) 331 .

The metal plate 331 has a rectangular shape with the Y direction as the long side when viewed from the Z direction. The length in the short side direction (length in the X direction) of the metal plate 331 is sufficient as long as it can be arranged between the pair of side portions 322, and is, for example, the same as the length in the X direction of the bottom surface of the groove portion 321a. is. The metal plate 331 is formed with a hole 331a through which a bolt 340 for fixing the holder 330 to the arm 320 is passed.

The boss portion 332 has a cylindrical shape. Specifically, the boss portion 332 is formed with a female screw hole (first female screw hole) 332a along the thickness direction of the metal plate 331 (or along the centerline of the boss portion 332). The female screw hole 332a is a hole in which a female screw groove is formed on the inner surface. The portion of the metal plate 331 to which the boss portion 332 is fixed may be formed with a hole (not shown) through which the locking bolt 350 fitted in the female screw hole 332a of the boss portion 332 can pass.

The holder 330 is fixed to the arm 320 with the boss portion 332 passing through the boss hole portion 395 . Specifically, with the boss portion 332 passed through the boss hole portion 395 , the bolt 340 is passed through the hole portion 396 and the hole portion 331 a from the arm 320 side, and then the bolt 340 is fixed with the nut 333 . The nut 333 may be fixed (for example, welded) to the back surface of the metal plate 331 . In this case, nut 333 may also be part of holder 330 .

The locking bolt 350 is fitted to the boss portion 332 passing through the boss hole 395 via a collar (first collar) 360 in a state where the holder 330 is fixed to the arm 320 . As described above, the fixing region of the boss portion 332 in the metal plate 331 is formed with a hole (a hole connected to the female screw hole 332a of the boss portion 332) through which the fastening bolt 350 is passed. When the tip of the locking bolt 350 protrudes from the metal plate 331 , an E-shaped snap ring 370 may be attached to the tip of the locking bolt 350 to prevent it from coming off. In this case, locking bolt 350 can be a flanged hex bolt with a circumferential groove 375 for mounting an E-ring 370 near the tip.

Collar 360 may be a resin collar. Collar 360 is made of nylon, for example. The material of collar 720 may be, for example, MC Nylon manufactured by Mitsubishi Chemical Advanced Materials. Since the collar 360 is made of resin, the weight of the panel-like structure 2 can be reduced. The collar 360 serves as a spacer for adjusting the length of screwing of the locking bolt 350, and when connecting two panel-like structures 2 along the Y direction, the collar 360 appropriately adjusts the panel-like structures 2 to be connected. It has the function of a sliding guide that leads to the proper locking position.

The first connector 300 is attached to the panel body 3 by the attachment unit 400 shown in FIGS. 12 and 13 . The mounting unit 400 has a fixing bracket 410 and a receiving portion 420 that receives the fixing bracket 410 .

The fixing bracket 410 is a component that is attached to the lower surface of the top portion 321 of the arm 320 on the side of the second end portion 320b in the Y direction. The fixing bracket 410 includes a metal plate (third metal plate) 411 having a shape that follows the shape of the lower surface of the top portion 321, and a pair of flange portions 412 of the metal plate 411 that are inserted and fixed (for example, welded). bolt (second bolt) 413.

A pin hole (second pin hole) 470 through which the positioning pin 450 of the receiving portion 420 is passed is formed in the metal plate 411 . The pin hole 470 is formed in the central portion between the center lines (axis lines) of the pair of bolts 413 when viewed from the Z direction. Bolt 413 is, for example, a hexagonal bolt.

The receiving portion 420 has a washer plate 440 , a positioning pin 450 and a fixing nut 460 .

The washer plate 440 has a metal plate (fourth metal plate) 443 having a rectangular shape when viewed from the Z direction. ) 442 are formed. A boss (second boss) 441 is fixed (for example, welded) between the pair of holes 442 . A through hole 441a for passing the positioning pin 450 is formed in the boss portion 441 along the thickness direction of the metal plate 443 (or along the center line of the boss portion 441). The boss portion 441 may penetrate the metal plate 443 . If the boss portion 441 does not pass through the metal plate 443 , a through hole connected to the through hole 441 a may be formed at the fixing position of the boss portion 441 in the metal plate 443 .

The positioning pin 450 is passed through the through hole 441 a of the boss portion 441 . A compression coil spring 451 is fitted to a portion of the positioning pin 450 protruding from the boss portion 441 (a portion on the lower surface side of the metal plate 443). An E-shaped retaining ring 452 for restricting the position of the compression coil spring 451 is attached to a portion of the positioning pin 450 protruding from the compression coil spring 451 . A compression coil spring 451 and an E-shaped retaining ring 452 (stopping member) may also be part of the receiving portion 420 .

The first connector 300 is attached to the panel body 3 using the attachment unit 400 configured as described above.

With the positioning pin 450 passed through the boss portion 441 of the washer plate 440 and the compression coil spring 451 and the E-shaped retaining ring 452 attached to the positioning pin 450, the washer plate 440 is placed in the mounting recess 430 (see FIG. 2). It is At this time, the portion of the positioning pin 450 protruding from the boss portion 441 (the portion to which the compression coil spring 451 and the E-shaped retaining ring 452 are attached) is passed through the hole portion 431a shown in FIG.

Determine the position of the arm 320 in the Y direction. In this case, in a mode in which the protrusion 480 (see FIG. 6) is formed in the third region 133 of the side plate 130 on the overhanging portion 150A side, the groove 321a of the arm 320 is fitted into the protrusion 480 (see FIG. 6). In addition, the position of the arm 320 in the Y direction is determined while the position in the X direction is restricted by the projection 480 . As such, the protrusion 480 may serve as a guide key for arranging the first connector 300 in the form of protruding in the Y direction and perpendicular to the X direction.

After the position of the arm 320 is determined, a pair of bolts 413 are passed through a pair of holes 390 of the arm 320 from below the arm 320 , and the fixture 410 is fitted to the lower surface of the arm 320 . At this time, the pair of bolts 413 pulled out upward from the pair of holes 390 are inserted into the holes 431b and 431c shown in FIG. pass through

After adjusting the position of the first connector 300 in the Y direction, the positioning pin 450 is passed through the pin hole 397 and the pin hole 470 (see FIG. 13) to define the position of the first connector 300 in the Y direction.

Thereafter, the fixing nuts 460 are fitted and fixed to the pair of bolts 413 projecting into the mounting recesses 430 .

As described above, the hole 431 a formed in the bottom 431 of the mounting recess 430 is for the positioning pin 450 , and the holes 431 b and 431 c are for the pair of bolts 413 . Therefore, the size and arrangement of the holes 431 a , 431 b , 431 c need only correspond to the positioning pin 450 and the pair of bolts 413 .

In the mounting structure of the first coupler 300 , the positioning pin 450 is inserted through both the pin hole 397 and the pin hole 470 . As a result, it is possible to regulate the length by which the first connector 300 protrudes from the panel body 3 when viewed in the Z direction, and to prevent the arm 320 from falling off. The pin hole 397 may be circular or elongated in the Y direction. By making the pin hole 397 an elongated hole (or a plurality of circular holes may be used), the protrusion of the arm 320 in the Y direction can be varied. In this case, by leaving the fixed position of one arm 320 at the normal position and increasing the protruding margin of one arm, two panel-like structures 2 (the panel-like structure 2A and the panel A triangular gap is formed between the long sides of the shaped structure 2B), and by repeatedly forming this triangular gap, it is possible to cope with curved roads and bridges.

By maintaining the state in which the compression coil spring 451 is always inserted into the pin hole 397, it is possible to prevent the first coupler 300 from coming off.

Since a pair of holes 390 are formed in the arm 320 from the second end 320 b along the Y direction, the arm 320 can be attached and detached without removing the fixing bracket 410 .

[Receiver]
The receiver 550 will be described with reference to FIGS. 14 and 15. FIG. The receiver 550 has a slide washer (fifth metal plate) 551 and a spring plunger 530 . The slide washer 551 is a metal plate having a rectangular shape with the long side extending in the X direction when viewed from the Z direction. The cross-sectional shape of the slide washer 551 perpendicular to the X direction may be U-shaped.

The slide washer 551 has an elongated hole (sixth hole) 520 and an elongated hole (seventh hole) 525 spaced apart in the X direction. The slot 520 has a first region 521 and a second region 522 . The first region 521 has a size through which the head 351 of the locking bolt 350 passes. The second region 522 is a region extending from the first region 521 toward the slot 525 side. The width of the second region 522 in the Y direction is narrower than that of the first region 521 and has a size through which the screw portion 352 of the locking bolt 350 passes.

The long hole 525 is a hole for sliding the slide washer 551 in the X direction. A collar 561 with a different diameter is attached to the long hole 525 , and a mounting bolt 560 is passed through the collar 561 with a spring washer 562 interposed therebetween. The different diameter collar 561 is a collar having a different diameter in the Z direction of FIG. 15 (a collar having a lower small diameter portion and an upper large diameter portion). The diameter difference collar 561 may be made of resin. The mounting bolt 560 is screwed through an embedded nut 570 with a washer, which is formed by welding a nut to a square washer integrally formed inside the panel-shaped structure 2 in advance, so that the slide washer 551 is accommodated in the recess. 501. At this time, the mounting bolt 560 may be screwed into the washer-equipped embedded nut 570 so that the slide washer 551 can slide in the X direction. By screwing the mounting bolt 560 to the embedded nut 570 with a washer, the slide washer 551 is prevented from rising. Reducing collar 561 , spring washer 562 and mounting bolt 560 may also be part of receiver 550 . Similarly, the embedded nut with washer 570 may also be part of the embedded nut with washer 570 .

A boss portion (fourth boss portion) 540 is provided on the side of the slide washer 551 opposite to the long hole 525 when viewed from the long hole 520 . A female screw hole (second female screw hole) 541 is formed in the boss portion 540 along the thickness direction of the slide washer 551 (along the centerline of the boss portion 540). A positioning spring plunger 530 is fitted in the female screw hole 531 . A hole (not shown) through which the spring plunger 530 passes is formed at the position where the boss portion 540 is formed in the slide washer 551 . Spring plunger 530 is secured with nut 542 . Nut 542 may also be part of receiver 550 .

16(a) and 16(b), the two panel-like structures 2 (the panel-like structure 2A and the panel-like structure 2B) are connected using the first connector 300 and the receiver 550. A method of connecting in the Y direction will be described.

As shown in FIG. 16(a), the receiver 550 is in the first state before receiving the first connector 300 (that is, before the panel-like structure 2 is connected to another panel-like structure 2). state), the spring plunger 530 is placed in the housing recess 501 in a state in which it is inserted into the pin hole 580a. In this state, when viewed from the Z direction, the center of the first region 521 of the long hole 520 overlaps the center of the hole 510 (in other words, the first region 521 is concentric with the hole 510). placed). In other words, the center of the first region 521 of the elongated hole 520 overlaps the center of the hole portion 510, and the pin hole 580a is formed so that the slide washer 551 can be positioned.

The hole formed in the partition wall 503 of the receiving structure 500 is inserted into the convex portion 502 of the receiving structure 500 of the panel-like structure 2B while inserting the fastening bolt 350 of the first connector 300 of the panel-like structure 2A. 510 and the first area 521 of the long hole 520 . With the head 351 of the locking bolt 350 protruding from the slide washer 551, the slide washer 551 is slid until the spring plunger 530 enters the pin hole 580b as shown in FIG. 16(b). As a result, the threaded portion 352 below the neck of the locking bolt 350 moves relatively toward the second region 522 of the elongated hole 520 . When the locking bolt 350 is helically screwed in this state, the connection is completed. Since the connection is easily completed only by sliding the slide washer 551 and screwing it, the work time can be shortened.

The pin hole 580b is a hole for defining the position of the slide washer 551 when the two panel-like structures 2A and 2B are connected (second state). In other words, the pin hole 580b may be formed on the same straight line along the X direction with respect to the pin hole 580a and separated according to the sliding amount of the slide washer 551 .

[Second connector]
The second coupler 700 will be described with reference to FIGS. 17 and 18. FIG. The second connector 700 is a connector (short side connector) for connecting the panel-like structure 2 in the X direction. The second connector 700 is mounted inside the recess 103 so as to extend in the Y direction.

As shown in FIGS. 17 and 18, the second connector 700 includes a connecting pipe 710, a retaining shaft 730 with a nut, a pair of collars (second collar) 720, and a pair of L-angles 740 with bosses. have.

The connecting pipe 710 is a hollow cylindrical member. The connecting pipe 710 can be formed of, for example, a material similar to the materials exemplified for the top plate 110, bottom plate 120, etc. (eg, fiber-reinforced resin including a woven base material made of continuous reinforcing fibers). The connecting pipe 710 may have non-conductivity. In this case, the connecting pipe 710 can be made of, for example, a fiber-reinforced resin containing a non-conductive reinforcing fiber base material.

The nut-equipped holding shaft 730 is configured by attaching a pair of nuts 732 to a holding shaft 731 having a screw groove formed therearound. A region of the holding shaft 731 between the pair of nuts 732 may not have a thread groove.

The collar 720 has a size that contacts the connecting pipe 710 and fits on the inner surface of the connecting pipe 710 . Collar 720 is, for example, a disc. A through hole 721 through which the holding shaft 731 is passed is formed in the collar 720 . A pair of collars 720 are arranged outside a pair of nuts 732 within the connecting pipe 710 . Collar 720 may be made of resin (eg, nylon). The material of collar 720 may be, for example, MC Nylon manufactured by Mitsubishi Chemical Advanced Materials. Since the collar 720 is made of resin, the weight of the second connector 700 can be reduced, and as a result, the weight of the panel-like structure 2 can be reduced.

The L-angle 740 with a boss is configured by fixing (for example, welding) a boss portion 745 projecting in the Y-direction to a metal L-angle 741 having an L-shaped cross section orthogonal to the X-direction. The bossed L-angle 740 has a first plate portion 742 to which a boss portion 745 is fixed, and a second plate portion 743 that is connected to the first plate portion 742 and arranged on the opposite side of the connecting pipe 710 . The second plate portion 743 is formed with a hole portion 743 a for screwing the second connector 700 to the panel body 3 . The first plate portion 742 and the second plate portion 743 are connected to form an L shape when viewed from the X direction. A through hole 745a is formed in the boss portion 745 along the thickness direction of the first plate portion 742 (along the center line of the boss portion 745).

As shown in FIG. 17, collars 720 are inserted through both ends of a nut-equipped holding shaft 730 and mounted inside a connecting pipe 710, and a pair of boss-equipped L-angles 740 are arranged to face each other. At this time, both ends of the nut-equipped holding shaft 730 are inserted into the through holes 745 a of the boss portion 745 to form the second connector 700 .

The length of W _R in FIG. 17 is the length of the space in the Y direction inside the concave portion 103 as shown in FIG. The second connector 700 is constructed by mechanical joints, and the connecting pipe 710 is cylindrical. To prevent the connecting pipe 710 from rotating, as shown in FIG. It can be screwed.

As shown in FIG. 19, the second connector 700 is screwed into the recess 103 . Specifically, the second connector 700 is arranged so that the surface opposite to the connecting pipe 710 of the first plate portion 742 of the L-angle 740 with a boss is in contact with a pair of side surfaces (opposite side surfaces) of the recess 103 when viewed in the Z direction. is placed in the recess 103 . As a result, the second plate portion 743 of the bossed L angle 740 comes into contact with the lower surface of the bottom plate 120 . With the second connector 700 arranged in the concave portion 103 in this way, the hole 743 a of the L-angle 740 with boss and the bottom plate 120 are inserted from the hole for screwing the second connector 700 formed in the top plate 110 . A bolt 770 is inserted so as to pass through the hole for screwing of the formed second connector 700 . A washer 761 and a spring washer 762 are passed through the tip of the bolt 770 protruding toward the bottom plate 120 , and further fixed with a screw nut 763 . Finally, an E-shaped retaining ring 765 may be attached for retaining.

In order that the second plate portion 743 of the L-angle 740 with a boss and the connecting pipe 710 do not protrude downward from the panel-like structure 2, the mounting portion of the second plate portion 743 of the L-angle 740 with a boss is attached to the concave portion 103. , may have a concave shape.

By connecting a plurality of panel-like structures 2 having the above-described structure, a suspended scaffolding 1 as shown in FIG. 1 can be formed.

Next, referring to FIGS. 20 to 24, an example of a method of connecting two panel-like structures 2 (a panel-like structure 2A and a panel-like structure 2B) in the Y direction (a method of connecting long sides). explain.
(Step A)
First, as shown in FIG. 20, for example, using a scaffold for inspection, 1 A pair of hanging chain clamps 650 in the row are fixed.

Next, the two chains 102 with hooks are inserted into the U-shaped suspension ring portion of the suspension chain clamp 650, and after the hooks are hooked on the chains and secured, the panel-like structure Bring 2A (connecting side) into the suspended position.

Subsequently, the worker on the scaffold for inspection inserts the other end of the chain 102 with the hook into the shackle 250, which is a hanging metal fitting whose hanging position has been adjusted in advance, and hooks the hook on the chain to secure it, resulting in a panel-like structure. Suspend the body 2A. (A state in which the first connector 300 having the arm 320 is projected in the Y direction (connecting direction) from the projecting portion 150A of the panel-like structure 2A.)

After that, a single clamp 630 with a hole is attached to a plurality of embedded nuts with washers 640 which are placed in predetermined positions in advance on the inner surface of the top plate 110 of the panel-like structure 2A and embedded so as to be integrated with the top plate 110. It is screwed with a hexagon bolt (not shown).

Next, a U-shaped fixing clamp 610 is fixed to the flange portion of the support member 101, and a plurality of orthogonal clamps 620 are used to fix the vertical and horizontal single pipes 600. Do a vibration stop. By doing so, it is possible to work on the panel-like structure 2A.

(Step B)
After that, as shown in FIG. 21, the worker on the panel-like structure 2A attaches the pair of hanging chain clamps 650 in the second row to the flange portion of the support member 101, and the width of the panel-like structure 2A in the Y direction. It is mounted at a position spaced apart in the Y direction by (the length of the short side). Similarly, the hooked chain 102 is inserted through the U-shaped hanging ring portion of the hanging chain clamp 650, and the hook is hooked on the chain to lock it. At the other end of the chain 102 with hook, the hook is hooked on the chain and locked. Next, the panel-like structure 2B (connected side) is lifted onto the panel-like structure 2A by, for example, an aerial work vehicle or the like, and the worker on the panel-like structure 2A carries it onto the panel-like structure 2A. .

(Step C)
Next, as shown in FIG. 22, two workers set the shackle 250 of the hanging fitting 220 to the front side (to the worker side) and set the projecting portion 150B of the panel-like structure 2B downward. (The protruding first coupler 300 is on top) and temporarily placed on the tip of the overhanging portion 150A of the panel-like structure 2A in a state of standing sideways. At this time, by using the plurality of rectangular holes 490, the operator can grip and hold the panel-like structure 2B in a laterally upright state.

(Step D)
Subsequently, as shown in FIG. 23( a ), the hook of the temporarily locked chain 102 with a hook in the second row is removed, the hook is inserted into the shackle 250 of the hanging fitting 220 on the front side of the work, and the hook is attached to the chain. hooked to and anchored. After that, an eyebolt 641 is screwed to an embedded nut (not shown) with a washer set up sideways, and a rope 645 is tied to the eyebolt 641 .

(Step E)
Next, as shown in FIG. 23(b), while the panel-like structure 2B is standing sideways, the projecting portion 150B is inserted into the concave portion 380 of the arm 320 of the first connector 300 as a position guide. The surface portion of the side plate 130 is brought into contact and locked.

(Step F)
After that, as shown in FIGS. 24(a), 24(b) and 24(c), while loosening the rope 645, the panel is pulled over the concave portion 380 serving as a position guide for the arm 320 of the first connector 300. Rotate the shaped structure 2B. As shown in FIG. 24(c), when the panel-like structure 2B becomes horizontal, the slide washer 551 is slid and the locking bolt 350 is helically screwed.

(Step G)
By removing the eyebolt 641 and the rope 645 described above, the connection between the long sides is completed as shown in FIG.

By sequentially repeating steps A to G, the suspension scaffolding 1 in the Y direction can be constructed.

According to the above method, the worker can safely perform the connection work without leaning over.

Next, referring to FIGS. 26 and 27, an example of a method of connecting two panel-like structures 2 (a panel-like structure 2A and a panel-like structure 2C) in the X direction (a method of connecting short sides). explain.

As shown in FIGS. 26 and 27(c), the second connector 700 of the panel-like structure 2A and the second connector 700 of the panel-like structure 2C are spaced apart in the X direction and face each other in parallel. placed in

The panel-like structure 2C is suspended from the support member 101 by the hooked chain 102 in the same manner as the panel-like structure 2A is suspended from the support member 101 . In this embodiment, as shown in FIG. 26, the panel-like structure 2C is suspended by one chain 102 with hooks. In this case, in the panel-like structure 2C, the hanger 220 on the far side from the panel-like structure 2A is used.

Thus, in this embodiment, the panel-like structure 2C is suspended by one hooked chain 102, so three support members 101 are shown in FIGS. Note that the plurality of support members 101 are normally arranged at equal intervals in the X direction. Therefore, in FIGS. 1 and 26, of the two chains 102 with hooks that suspend the panel-like structure 2A, the support material 101 on which the chain 102 with hooks on the panel-like structure 2C side is hung, and the support material 101 for the panel-like structure 2C Another support member 101 may exist between the support member 101 on which the chain 102 with hooks is hung, but is not shown in FIGS. 1 and 26 .

The second connector 700 of the panel-like structure 2C suspended by the chain 102 with hooks in this way is attached to the second connector 700 of the panel-like structure 2A as shown in FIGS. concatenate as

First, as shown in FIG. 27(a), the single tube universal clamp 780 is locked to the connecting pipe 710 of the second connecting tool 700 of the panel-like structure 2A. Next, as shown in FIG. 27(b), the second connector 700 of the panel-like structure 2C is temporarily placed on one of the single tube universal clamps 780 that has been opened, and the clamping claws 781 are raised to engage. match. After that, as shown in FIG. 27(c), the locking nut 782 of the eyebolt is screwed to complete the connection.

The panel-like structure 2 has a hollow body 100 , and the hollow body 100 is reinforced with a pair of reinforcing members 160 . The pair of reinforcing members 160 are arranged to sandwich the center line of the top plate 110 (the line extending in the X direction) when viewed from the Z direction. Therefore, the bending strength and rigidity of the panel-like structure 2 in the Y direction are improved. Furthermore, since the pair of reinforcing members 160 extends in the X direction, the bending strength and rigidity in the X direction are also increased. Therefore, the hollow body 100, the reinforcing member 160, the arm 320, and the connecting pipe 710 of the panel-like structure 2 are made of materials such as those exemplified (for example, fiber-reinforced resin containing a fabric base material made of continuous reinforcing fibers), and are lightweight. It is possible to maintain the necessary bending strength and rigidity while reducing the size.

By forming the hollow body 100, the reinforcing member 160, the arm 320, the connecting pipe 710, and the like from fiber-reinforced resin containing a non-conductive reinforcing fiber base material, the required bending strength and rigidity are ensured while preventing current flow. can.

In the configuration in which the pair of reinforcing members 160 are arranged on both sides of the recessed portion 200 for hanging fitting, the in-plane bending rigidity in the Y direction of the top plate 110 between the pair of reinforcing members 160 is increased. At the same time, the shape effect of the reinforcing member 160 extending in the X direction and the recessed portion 200 for hanging fitting formed apart in the X direction also increases the bending rigidity of the panel-like structure 2 in the X direction. Therefore, bending when a worker gets on the panel-like structure 2 can be suppressed.

Since the hollow body 100 (or the panel main body 3) has the projecting portion 150A, the first connector 300 can be attached to the lower portion of the projecting portion 150A. Therefore, in the panel-like structure 2, it is possible to prevent, for example, the first connector 300 from protruding from the lower surface.

Since the first connector 300 has the exemplified configuration, it is easy to connect the panel-like structures 2 along the Y direction.

Since the panel-like structure 2 has the receiving structure 500 and the receiving tool 550 on the opposite side of the first connecting tool 300, the panel-like structures 2 having the same configuration can be connected in the Y direction.

By adopting the first connector 300, the receiving structure 500, and the receiving tool 550, when connecting two panel-like structures 2 in the Y direction, a worker can Moreover, the two panel-like structures 2 can be easily connected. Similarly, by employing the second connector 700, when connecting two panel-like structures 2 in the X direction, the worker can easily connect the two panels without protruding from the panel-like structures 2. The panel-like structure 2 can be connected.

The specific examples of the embodiments of the present invention have been described above with reference to the drawings. The above embodiments are examples of the present invention, and the present invention is not limited to these exemplifications, and is intended to include the scope indicated by the claims and equivalents of the claims. are intended to include all changes that come within the meaning and scope of

For example, the second connector 800 shown in FIG. 28 may be used as the second connector. The second connector 800 has a connecting pipe 710 and a pair of cylindrical portions 810 integrally provided at both ends of the connecting pipe 710 .

The tubular portion 810 can be made of the same material as the connecting pipe 710 . The cylindrical portion 810 has a rectangular shape when viewed from the axial direction of the connecting pipe 710 (the Y direction in FIG. 28). A part of the cylindrical portion 810 penetrates a pair of side surfaces of the concave portion 103 when viewed in the Z direction, and the upper surface of the cylindrical portion 810 is integrally formed by being connected to the lower surface of the top plate 110 .

By adopting such a form, the anti-rotation means as in the case of the second connecting member 700 is not required, and the number of components can be reduced without the need for attachment parts. Weight can be reduced. A panel-like structure provided with the second connector 800 instead of the second connector 700 also has the same effects as the panel-like structure 2 .

The number of first connectors and the corresponding number of receiving structures and receiving tools are not limited to the illustrated number, and may be, for example, three or more. The number of panel-like structures 2 used in the suspended scaffolding 1 should correspond to the required size of the suspended scaffolding 1 .

A panel-like structure will be described based on an example. In the description of the embodiments, the same reference numerals are given to the same or corresponding parts as those of the above-described embodiment, and overlapping descriptions will be omitted. Hereinafter, the panel-like structures according to the examples will be described while exemplifying materials, etc., but the present invention is not limited to the following examples.

In the panel-like structure 2 of the embodiment, the length L in the X direction shown in FIGS. The total height H that is the length in the direction, the width _{WP that is the length of the overhanging portions 150A and 150B in the Y direction,} and the height H that is the length in the Z direction of the overhanging portions 150A and 150B. _T, the width _{WB that is the length of the bottom plate 120 in the Y direction,} the opening width _{WR that is the length in the Y direction of the U-shaped recesses 103 at both ends in the X direction, and} the depth length in the X direction _LR are: It was as follows.
Length L: 3m
Width W: 0.66m
Height H: 0.1m
Width _WP : 0.12m
Height _HT : 0.05m
Width _WB : 0.42m
Opening width W _R : 0.200m
Depth length L _R : 0.135m

A method of manufacturing the panel-like structure 2 of the embodiment will be described with reference to FIGS. For the explanation of the manufacturing method, the panel-shaped structure 2 is composed of an upper member molded body (top plate 110), an internal member molded body (reinforcing member 160 which is an internal part), and a lower member molded body (bottom plate 120). , side plate 130 and end plate 140).

(First step)
First, in the first step, a first molding die 900 for molding the lower member molded body, a second molding die 950 for molding the inner member molded body, and a third molding die for forming the inner member molded body 960 was prepared.

As shown in FIG. 29, the first mold 900 was a concave female mold for molding the bottom plate 120, the side plates 130 and the end plates 140. As shown in FIG. The first molding die 900 had a shape capable of forming the shapes of the bottom plate 120 , the side plate 130 and the end plate 140 . In this embodiment, the first molding die 900 is formed with a convex portion 910A for forming the concave portion 103 of the panel-like structure 2, and a pair of convex portions 910A are formed on the bottom portion of the portion forming the overhang portion 150A. A pair of recesses 910B corresponding to the protrusions 480 are formed, and a pair of recesses 910C corresponding to the pair of protrusions 485 are formed at the bottom of the portion forming the projecting portion 150B. A convex portion 910D for molding 502 was formed.

(Second mold for upper member molded body)
As shown in FIG. 30 , the second molding die 950 was a female die with a depth corresponding to the plate thickness of the top plate 110 . Like the first mold 900, the second mold 950 has a convex portion 950A for forming the U-shaped concave portion 103. As shown in FIG. The second molding die 950 is formed with convex portions 950B for forming the pair of recessed portions 200 for hanging metal fittings. A portion 950C is formed, and a projecting portion 950D for forming the receiving recess 501 of the receiving structure 500 is formed at the portion forming the projecting portion 150B.

(Third Mold for Molded Internal Member)
As shown in FIG. 31, a pair of third molds 960 for molding the reinforcing member 160 is prepared. The third mold 960 is specifically a male mold for molding the U-shaped members 160A and 160B shown in FIG. The U-shaped members 160A and 160B thus formed are joined together to manufacture the reinforcing member 160. As shown in FIG.

Since the reinforcing member 160 extends in the X direction, the third mold 960 also extends in one direction. In the third molding die 960, the U-shaped members 160A and 160B were molded using three surfaces 961, 962, and 963 arranged in a U-shape. In FIG. 31, the U-shaped members 160A and 160B molded by the third molding die 960 are schematically shown by chain double-dashed lines.

(Second step)
Next, in the second step, a release material was applied to the first mold 900, the second mold 950, and the third mold 960. As shown in FIG. After that, a gel coat of about 500 [g/m ² ] was applied to the first molding die 900 and the second molding die 950 .

(Third step)
Next, in the third step, a lower member molded body, an upper member molded body and an inner member molded body were molded.

The reinforcing fiber base material used for the panel-shaped structure 2 of the example included chopped strand mat, satin woven glass cloth, and aramid fiber cloth.

A chopped strand mat (hereinafter referred to as "mat") was a sheet-like base material in which glass fibers were cut into predetermined lengths and randomly dispersed.

The mats used for the panel-shaped structure 2 of the example were mat MC300 (trade name, manufactured by Nittobo Co., Ltd.) with a fiber basis weight of 300 [g/m ² ] and a fiber basis weight of 450 [g/m ² ]. It was mat MC450 (trade name, manufactured by Nittobo Co., Ltd.).

The satin weave glass cloth was a fabric using glass fibers for the warp and weft. The fabric used for the panel-like structure 2 of the example was a satin cloth KS1581 (trade name, manufactured by Nittobo Co., Ltd.) having a fiber basis weight of 300 [g/m ² ].

Aramid fiber cloth is a fabric using aramid fibers for warp and weft. The fabric used for the panel-like structure 2 is Kevlar 49 cloth T281 (trade name, manufactured by Toray Industries, Inc.) having a fiber basis weight of 200 [g/m ² ].

The resin used for molding the panel-like structure 2 was an unsaturated polyester resin (hereinafter referred to as "matrix resin").

The resin used for joining the upper member molded body, the inner member molded body, and the lower member molded body is made by adding 10 parts by weight of filler, which is a glass fiber cut to a length of 1 mm to 3 mm, to the matrix resin and increasing the viscosity. It was a putty-like resin to which 20 parts by weight of talc was added as a material (hereinafter referred to as "bonding resin").

The molding method used for molding the panel-like structure 2 was a hand layup molding method.

[Molding of lower member molded body]
On the first molding die 900, reinforcing fiber base materials were laminated in the order shown in Table 1 below while being impregnated with a matrix resin.

After laminating the third layer, the matrix resin was cured on the first mold 900 . The first layer in Table 1 above was the first layer 20a in FIG. 9(b), the first layer 130a in FIG. 9(c), and the outer layer (not shown) of the end plate 140. FIG. The second layer in Table 1 was the second layer 120b in FIG. 9(b). The third layer in Table 1 was the second layer 130b in FIG. 9(c) and the inner layer (not shown) of the end plate 140. FIG.

[Molding of Upper Member Molded Body]
The reinforcing fiber base material is laminated on the second mold 950 in the order shown in Table 2 below while being impregnated with the matrix resin.

After laminating the third layer, the matrix resin was cured on the second molding die 950 . After curing, the mold was removed to obtain a molded upper member. The first layer in Table 2 above was the first layer 110a in FIG. 9(a). The 2a-th layer in Table 2 was the 2a-th layer 110b in FIG. 9(a), and the 3a-th layer was the 3a-th layer 110c in FIG. 9(a). The 2b layer in Table 2 was the 2b layer 110d in FIG. 9(a), and the 3ab layer was the 3b layer 110e in FIG. 9(a).

[Molding of internal member molding]
On surfaces 961, 962 and 963 of a pair of male third molds 960, reinforcing fiber base materials were laminated in a U-shape while being impregnated with a matrix resin in the order shown in Table 3 below.

After laminating the second layer, the respective male third molds 960 were tied together and clamped to cure the matrix resin. After curing, the mold was removed to obtain an internal member molded body (reinforcing member 160). The first layer in Table 3 above was the first layer 160a in FIG. 10, and the second layer was the second layer 160b in FIG.

In this example, an L angle (not shown) was manufactured as a member that plays a role of a flange when joining the upper member molded body and the lower member molded body. The L-angle was a member with an L-shaped cross section. While impregnating a matrix resin in an L-shaped mold, mat MC300 and satin cloth KS1581 were laminated in that order, the matrix resin was cured, and the mold was removed to obtain an L angle.

(Fourth step)
In the next fourth step, the washer-equipped embedded nut 570 (M8) and the washer-equipped nut 570 (M8) are adhered to a predetermined position on the inner surface of the upper member molded body (the surface inside the panel-shaped structure 2) using a bonding resin. The washer portion of the embedded nut 640 (M12) was placed in contact with the top plate 110 .

Next, the embedded nut with washer 570 (M8) and the embedded nut with washer 640 (M12) are overlaid while the mat MC450 is impregnated with matrix resin to increase the bonding strength with the top plate 110. up. "Overlaying" means laminating a fiber base material for reinforcement, bonding of members, and the like.

(Fifth step)
In the subsequent fifth step, the reinforcing member 160 and the L-angle were temporarily fixed to the lower member molded body while being adhered using a bonding resin.

In the arrangement of the reinforcing members 160 , two reinforcing members 160 are arranged in parallel in the X direction on the bottom plate 120 so as to be spaced apart from the center in the Y direction (width direction) so as to sandwich the recessed portion 200 for hanging fittings. In order to reinforce the corner of the contact portion between the lower flange 162 of 160 and the bottom plate 120, the lower flange 162 was overlaid while the mat MC450 was impregnated with matrix resin.

In the L-angle arrangement, the bonding resin is used so that the first side abuts the entire circumference of the upper inner surface of the side plate 130 and the upper inner surface of the end plate 140, and the second side protrudes inside the panel-like structure 2. Temporarily fasten while gluing. The upper surface of the second side is made flush with the upper flange 161 of the reinforcing member 160 .

Next, in order to reinforce the corner of the contact portion of the L angle in the same manner as described above, the mat MC450 was impregnated with the matrix resin and overlayed with the mat MC450.

(6th step)
Next, in the sixth step, the upper member molded body is joined to the lower bonded body (the bonded body of the pair of reinforcing members 160, the L angle, and the lower member molded body (bottom plate 120, side plate 130 and end plate 140)). did. Specifically, the following three steps were performed to form a bonding layer on the upper surface of the L-angle and the upper surface of the upper flange 161 of the reinforcing member 160 .

(1) Mat MC450 was laminated while being impregnated with matrix resin.
(2) Next, a bonding resin was applied to the glass mat.
(3) A glass mat obtained by impregnating a mat MC450 with a matrix resin was further placed thereon.

(Seventh step)
Next, in the seventh step, the upper member molded body (the top plate 110) is placed on the bonding layer formed in the sixth step with the gel coat surface facing upward, and a weight is placed thereon to press-bond. The resin was allowed to harden. After curing the resin, it was removed from the first mold 900 to obtain an intermediate in the manufacturing process of the panel-like structure 2 .

(8th step)
Next, in the eighth step, a pair of insertion openings 170 and a plurality of rectangular holes 490 were bored in the bottom plate 120 of the intermediate body obtained in the seventh step. Thus, a panel body 3 was obtained.

(9th step)
Next, in the ninth step, the hanger 220, the first connector 300, and the second connector 700 were incorporated into the panel main body 3 to obtain the panel-like structure 2 of the example.

The total weight of the panel-like structure 2 of Example thus obtained was 29 kg. The weight of the panel-like structure 2 per projected area viewed from above was 14.6 [kg/m ² ]. The weight of the panel-like structure 2 of the example was in the range of 12 kg/m ² or more and 17 kg/m ² or less.

Next, a metal frame having a pair of support members 101 (H-shaped steel) spaced apart by 2.5 [m] is assembled at a height of 2 [m], and the bottom plate 120 of the panel-like structure 2 is placed downward. Then, as shown in FIG. 1, the panel-like structure 2 is suspended from the supporting material 101 by the chain 102 with hooks, and a "weight" corresponding to the load capacity of 3 kN of the scaffolding panel is provided at the upper center of the top plate 110. A loading test was carried out with a flexible container placed on it, and it was confirmed that it would not break.

A load of 5 kN, which is 1.42 times the allowable load of 3.5 kN of the single-tube universal clamp 780, was applied to the connecting pipe 710, which is the second connecting tool 700, and it was confirmed that it would not break.

Reference Signs List 1 Suspended scaffolding 101 Support member 102 Chains with hooks 2, 2A, 2B, 2C Panel-like structure 3 Panel body 220 Suspension fitting 300 First connector 550 Receptacle 100 Hollow body 110 Ceiling Plate 110a...first layer 110b...seconda layer 110c...thirda layer 110d...secondb layer 110e...thirdb layer 103...recess 120...bottom plate 120a...first layer 120b...second layer 130...side plate 130a...first layer 130b...Second layer 131...First region 132...Second region 133...Third region 140...End plate 150A...Overhanging part 150B...Overhanging part 160...Reinforcement member 160a...First layer 160b...Second layer 160A... U-shaped member 160B U-shaped member 161 Upper flange 162 Lower flange 163 Web 170 Insertion opening 200 Hanging fitting recess 201 Bottom 210 Slide hole 240 Slide fitting 250 Shackle 270 Plate 241 Metal plate 230 Bolt 231 Head 232 Threaded portion 260 Screw nut 271 Flat plate region 272 Bending region 251 Pin shaft 271a Hole 285 Circumferential groove 280 E-shaped retaining ring 320 Arm 320a First end portion 320b Second end portion 321 Top portion 321a Groove portion 321b Flange portion 322 Side portion 331 Metal plate 331a Hole portion 332a Female screw hole 332 Boss portion 333 Nut 340 Bolt 350... Locking bolt 351... Head 352... Screw part 360... Collar 330... Holder 395... Boss hole 396... Hole 397... Pin hole 380... Recess 370... E-shaped retaining ring 375... Circumferential groove 390... Hole 400 Mounting unit 410 Fixing bracket 411 Metal plate 412 Collar 413 Bolt 420 Receiving portion 430 Mounting recess 431 Bottom 431a Hole 431b Hole 431c Hole 440 Washer plate 441 Boss portion 441a Through hole 442 Hole portion 443 Metal plate 450 Positioning pin 451 Compression coil spring 452 E-shaped snap ring 460 Fixing nut 470 Pin hole 480 Convex portion 485 Convex portion 490 Hole portion 500... Receiving structure 501... Receiving recess 502... Convex part 503... Partition wall 510... Hole part 520... Long hole 521... First area 522... Second area 525... Long hole 531... Female screw hole 541... Female screw hole 542... Nut 530 Spring plunger 540 Boss portion 551 Slide washer 560 Mounting bolt 561 Reducing collar 562 Spring washer 570 Embedded nut with washer 580a Pin hole 580b Pin hole 640 Embedded nut with washer 650 Chain clamp 630 Single clamp with hole 610 Character-shaped fixing clamp 620 Orthogonal clamp 600 Single pipe 641 Eyebolt 645 Rope 700 Second connector 710 Connecting pipe 720 Collar (second collar)
721... Through hole 730... Holding shaft with nut 731... Holding shaft 732... Nut 740... L angle with boss 741... L angle 745... Boss part 742... First plate part 743... Second plate part 743a... Hole part 745a... Penetration Hole 761... Washer 762... Spring washer 763... Screw nut 765... E-shaped retaining ring 784... Round hole 785... Rotation-stop bolt 770... Bolt 780... Single tube universal clamp 781... Narrow claw 782... Locking nut 800... Second Connector 810... Cylindrical part 900... First mold 950... Second mold 960... Third mold 910A... Convex part 910B... Concave part 910C... Concave part 910D... Convex part 950A... Convex part 950B... Convex part 950C... Convex part 950D... Projection 961... Surface 962... Surface 963... Surface α1... Area α2... Area α3... Area

Claims (14)

A panel-like structure suspended by chains with hooks,
A hollow body having a top plate, a bottom plate, a pair of side plates and a pair of end plates,
The top plate, the bottom plate and the pair of side plates extend in a first direction,
the pair of side plates are spaced apart in a second direction intersecting the first direction and connect the top plate and the bottom plate;
The top plate and the bottom plate are spaced apart in a third direction intersecting the first direction and the second direction, and
The pair of end plates are spaced apart in the first direction and connect the top plate and the bottom plate,
the hollow body;
a pair of reinforcing members arranged between the top plate and the bottom plate for reinforcing the hollow body;
with
The pair of reinforcing members extends in the first direction, and includes a second reinforcing member that intersects the first direction across a center line of the top plate extending in the first direction when viewed from the third direction. spaced apart in the direction of
Each of the pair of reinforcing members is
a first flange arranged on the top plate side;
a second flange disposed on the side of the bottom plate;
a web connecting the first flange and the second flange;
having
Panel-like structure. The top plate is formed on the center line with recesses for hanging metal fittings in which the chains with hooks are attached and the hanging metal fittings are arranged in the first direction,
The hanging fitting recess extends in the first direction,
The pair of reinforcing members are arranged on both sides of the recessed portion for hanging fitting when viewed from the third direction,
The panel-like structure according to claim 1. A slide hole for sliding the suspension fitting in the first direction is formed in the first bottom portion of the recess for the suspension fitting,
The panel-like structure according to claim 2. further comprising a hanging fitting to which the chain with hook is attached;
The hanging metal fitting is
a first metal plate having a rectangular shape when viewed from the third direction; a slide fitting having a first bolt;
a shackle arranged on the threaded portion side of the pair of first bolts in the slide fitting;
A bending plate for fixing the shackle to the slide fitting, which is formed with a pair of first holes through which the pair of first bolts are passed, and the region between the pair of first holes is the bending plate bent so as to form a space between the sliding metal fitting and the pin shaft of the shackle;
a pair of nuts attached to the pair of first bolts for fixing the bending plate to the slide fitting;
has
The bottom plate is formed with an insertion opening for inserting the slide fitting,
A panel-like structure according to claim 3. further comprising a first connector for connecting the two panel-like structures in the second direction;
In the second direction, the length of the bottom plate is shorter than the length of the top plate,
In a cross section orthogonal to the first direction, the hollow body has a first projecting portion and a second projecting portion on both sides of the bottom plate when viewed from the third direction,
The first connector is attached to the side opposite to the top plate at the first projecting portion,
A panel-like structure according to any one of claims 1 to 4. Each of the pair of side plates,
a first region connected to the top plate;
a second region connected to the bottom plate;
a third region connecting the first region and the second region and crossing the third direction;
has
The first connector is attached to the third region of the side plate of the pair of side plates on the first overhang side,
The panel-like structure according to claim 5. The first connector is
The arm extends in the second direction, and the second end opposite to the first end in the second direction is the side plate of the pair of side plates on the first overhang side. said arm attached to said third region having said first end projecting from said hollow body in said second direction when viewed from said third direction;
a holder having a second metal plate and a first boss fixed to the second metal plate and having a first female screw hole formed along the thickness direction of the second metal plate;
a locking bolt screwed into the first female threaded hole formed in the first boss;
A first collar, through which the locking bolt passes, is arranged between the head of the locking bolt and the first boss portion while being screwed into the first female screw hole. the first color;
a mounting unit for mounting the arm to the hollow body;
has
A boss hole through which the first boss passes is formed on the first end side of the arm,
the locking bolt is screwed via the first collar to the first boss portion protruding from the arm through the boss hole;
In the first protruding portion, a mounting recess is formed at a mounting position of the first connector,
The mounting unit is
A fixing metal fitting attached to the side of the arm opposite to the first projecting portion, comprising: a third metal plate; the fixing bracket having a pair of fixed second bolts;
A washer plate disposed in the mounting recess, comprising a fourth metal plate and a second boss portion fixed to the fourth metal plate and having a through hole, the fourth metal plate the washer plate formed with a pair of second holes through which the pair of second bolts pass;
a positioning pin that passes through the through hole of the second boss;
a pair of fixing nuts fitted to the pair of second bolts to fix the washer plate to the fixing bracket;
has
A pair of third holes through which the pair of second bolts are passed are formed on the second end side of the arm, spaced apart in the first direction, and a third hole through which the positioning pin is passed. 1 pin hole is formed,
A second pin hole through which the positioning pin is passed is formed in the third metal plate,
The second bottom of the mounting recess is formed with a pair of fourth holes for passing the pair of second bolts and a fifth hole for passing the positioning pin,
A panel-like structure according to claim 6. The pair of third holes are long holes extending in the second direction from the second end,
A panel-like structure according to claim 7. In the arm, a temporary placement recess for temporarily placing the panel-shaped structure to be connected by the first connector is formed in a region protruding from the hollow body when viewed from the third direction.
A panel-like structure according to claim 7 or 8. further comprising a receiver for receiving the first connector,
A receiving structure for receiving the first connector is formed on a side of the hollow body opposite to the first connector in the second direction,
The receiving structure is
a housing recess formed in the top plate and housing the receiving tool;
a convex portion formed on the side opposite to the accommodation concave portion in the third region;
has
The third bottom portion of the accommodation recess and the top portion of the protrusion are integrated,
An embedded nut is embedded in the third bottom,
The receiver is
a slide washer having a fifth metal plate and a fourth boss fixed to the fifth metal plate and having a second female screw hole formed along the thickness direction of the fifth metal plate;
a positioning spring plunger fitted in the second female screw hole of the fourth boss;
has
The fifth metal plate is formed with a sixth hole through which the fastening bolt passes along the first direction and a seventh slide hole,
The sixth hole has a first region through which the head of the locking bolt passes, and a width in the second direction that extends from the first region toward the sixth hole and is narrower than that of the first region. and a second region;
The seventh hole extends in the first direction,
The receiver is arranged in the housing recess so as to be slidable in the first direction by passing a bolt through the seventh hole and fitting the embedded nut,
In the third bottom portion, in the first state before receiving the first connector with the receiving member, the fastening bolt is passed through a position facing the first region of the sixth hole. an eighth hole, a third pin hole through which the spring plunger is inserted to define the position of the slide washer before the slide washer is slid in the first direction, and the slide from the first state. A fourth pin hole is formed through which the spring plunger passes and defines the position of the slide washer in a second state in which the washer is slid in the first direction and receives the first connector. ,
A panel-like structure according to any one of claims 7-9. further comprising a pair of second connectors for connecting the two panel-like structures in the first direction;
When viewed from the third direction, a pair of recesses for the second connector in which the pair of second connectors are arranged is formed at both ends of the hollow body in the first direction,
The second connector is
a connecting pipe;
a holding shaft arranged in the connecting pipe, the holding shaft extending in the same direction as the extending direction of the connecting pipe, and having a pair of nuts spaced apart from each other;
a pair of second collars passed through the holding shaft, arranged outside the pair of nuts in the connecting pipe and in contact with the inner surface of the connecting pipe;
A pair of L angles arranged at both ends of the connecting pipe,
A first plate portion provided with a boss portion through which the holding shaft is passed, and the side opposite to the side provided with the boss portion is in contact with the side surface of the second connector recess when viewed from the third direction. and,
a second plate portion located on the opposite side of the connecting pipe with respect to the first plate portion and screwed to the bottom plate of the hollow body;
the pair of L-angles having
comprising
A panel-like structure according to any one of claims 1 to 10. Each of the top plate, the bottom plate, the pair of side plates, the pair of end plates, and the pair of reinforcing members is integrally formed of a fiber-reinforced resin containing a textile base material made of continuous reinforcing fibers,
A panel-like structure according to any one of claims 1 to 11. Each of the top plate, the bottom plate, the pair of side plates, the pair of end plates and the pair of reinforcing members includes a non-conductive continuous continuous fiber base material made of aramid fiber or glass fiber,
A panel-like structure according to any one of claims 1-12. A suspended scaffold constructed by connecting a plurality of panel-like structures according to any one of claims 1 to 13.

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