Scaffolding board gap filling device

Abstract

This invention provides a scaffolding board gap-filling device that is lightweight, easy to handle, and allows for safe and rapid gap-filling work on scaffolding boards. [Solution] The temporary scaffolding 50 consists of a gap-filling material 2 that closes the gap 56 between the scaffolding boards 55, 55, and a fixing member 3 that fixes the gap-filling material 2 to the horizontal frame member 53 of the support frame 54 that is present in the gap 56 between the scaffolding boards 55, 55, and is assembled integrally in a detachable manner. The gap-filling material 2 is a plate-shaped member formed to cover the gap 56 between the scaffolding boards 55, 55, and the fixing member 3 is in the form of a resin fixing clip that elastically engages with the horizontal frame member 53 in a cradling manner. By elastically engaging and fixing the fixing member 3 to the horizontal frame member 53 of the support frame 54, both ends in the width direction of the gap-filling material 2 abut and engage with the upper surfaces 55a, 55a of the adjacent scaffolding boards 55, 55, thereby closing and filling the gap 56 between the scaffolding boards 55, 55.

Description

Technical Field

[0001] The present invention relates to a false floor gap filling device, and more particularly to a gap filling structure technology for covering the gaps existing between adjacent false floors in a temporary false floor used as a work floor in high-altitude work such as the construction and repair of bridges, highways, etc. in a closed manner.

Background Art

[0002] A temporary false floor is used as a work floor in high-altitude work. For example, in the construction and repair of bridges, the above-mentioned temporary false floor suspended downward from bridge girders, guardrails, etc. is often erected, and construction work and repair work are carried out thereon.

[0003] Such a temporary false floor is formed by a support frame formed by framing frame members in a grid shape extending horizontally and supported, and a large number of false floor boards are laid across the support frame, thereby forming a work floor.

[0004] By the way, in the temporary false floor configured as described above, a gap inevitably occurs between adjacent false floor boards due to the structure in which the frame members are assembled in a grid shape. Such a gap is preferably maintained as narrow as possible for safety measures such as preventing the fall of parts during work and the misstep of workers. From this perspective, according to the Labor Safety and Hygiene Regulations, the gap between false floor boards is required to be 3 cm or less to prevent unexpected accidents.

[0005] A method has been proposed in which a plate-like member is passed to fill such a gap between false floor boards, and the plate material is fixed to the frame member with a hook having legs or the like.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, at the construction site, many workers walk around on the temporary scaffolding, and their attention to their footing can be distracted as they concentrate on their work. If the boards used to fill the gaps are only supported by the legs, the board members may come loose due to sudden loads from different directions, exposing the gaps and potentially leading to accidents caused by falling objects. On the other hand, even if the gaps between the scaffolding boards are caused by the frame members between the boards, a considerable number of gaps will still occur throughout the entire site.

[0008] For example, bridge repair work typically involves structures hundreds of meters long, and the number of gaps in the scaffolding planks becomes very large, sometimes hundreds or even thousands. Covering all these gaps requires a great deal of effort to install numerous plate-like members. Therefore, if the hooks protruding downwards are integrated with the plate-like members, it becomes difficult to tightly stack the plate-like members together when attempting to transport them, thus reducing transportation efficiency.

[0009] Therefore, there was a need for a solution that was easy to carry and could be securely installed in narrow spaces.

[0010] This invention has been made in view of the aforementioned problems of the prior art, and its objective is to provide a scaffolding board gap-filling device that has an easy-to-handle structure and can safely and quickly fill gaps in scaffolding boards. [Means for solving the problem]

[0011] To achieve the above objective, the scaffolding board gap-filling device of the present invention is a device for filling gaps between adjacent scaffolding boards in a temporary scaffolding where a large number of scaffolding boards are laid on a support frame, and comprises a plate-shaped gap-filling material formed to a size that can close the gap from above, and a fixing member that fixes the gap-filling material to the frame member of the support frame present in the gap, which are detachably combined, and the fixing member is in the form of a fixing clip that can elastically engage with the frame member of the support frame from both sides in a cradling manner.

[0012] Furthermore, the combined engagement structure of the gap-filling material and the fixing member is configured such that the engagement receiving portion of the gap-filling material and the engagement portion of the fixing member engage and fix the gap-filling material in the vertical direction. The engagement receiving portion of the gap-filling material is in the form of a cylindrical body projecting downward, comprising a through-hole that penetrates in the vertical direction and a locking shoulder portion provided on the outer circumference of the upper end opening of the through-hole. The engagement portion of the fixing member is in the form of an engagement projection portion that can be inserted into the through-hole of the gap-filling material and comprises a locking projection that can lock in the vertical direction to the locking shoulder portion and an overhang that abuts from below the lower end opening edge of the through-hole when the locking projection is locked to the locking shoulder portion. The fixing member is characterized by comprising a rib that extends radially outward integrally from the outer surface of the engagement receiving portion along the lower surface of the gap-filling material.

[0013] Here, it is preferable that the gap-filling material is made of a moldable resin. Furthermore, it is preferable that the fixing member is also made of a moldable resin. This is because if at least the gap-filling material is made of resin, it can be made lighter than if it were constructed using metal members, making it easier to carry a large number of them.

[0014] The fixing member elastically engages with and fixes to the frame member of the support frame, so that both sides of the gap-filling material in the width direction abut and engage with the upper surface of the adjacent scaffolding boards, thereby closing and filling the gap between the scaffolding boards.

[0015] A preferred embodiment employs the following configuration. The gap-filling material described above is in the form of a plate-like member having a lightweight reinforcing structure, with the upper surfaces on both sides in the width direction being inclined downwards, and recesses provided at both ends in the length direction to allow the suspension chain to be inserted vertically.

[0016] The above-mentioned fixing member is equipped with a bifurcated plate-shaped engaging fixing portion having an inner cross-sectional shape corresponding to the outer cross-sectional shape of the frame member of the support frame, and this engaging fixing portion is elastically deformable outward on both sides relative to the frame member of the support frame, and has an engaging structure that elastically engages with the outer surface of the frame member in a cradling manner.

[0017] The locking projection and protruding portion of the fixing member described above have a length corresponding to the length of the insertion hole in the gap-filling material. Furthermore, it is preferable that they are integrally connected by a connecting portion which has the form of a rotatable shaft within the insertion hole. [Effects of the Invention]

[0018] According to the scaffolding board gap-filling device of the present invention, the fixing member, which is detachably combined with the gap-filling material, abuts from below against the lower end opening edge of the insertion hole formed in the engagement receiving portion of the gap-filling material, and the ribs formed radially outward from the outer surface of the cylindrical body constituting the engagement receiving portion provide sufficient strength against the force in the direction in which the ribs extend along the surface of the gap-filling material relative to the fixing member. Therefore, in combination with the force of the fixing member supporting the gap-filling material in the axial direction, safety can be ensured in the unstable installation position of a gap in temporary scaffolding.

[0019] According to the present invention, since the fixing member can be removed from the gap-filling material when not in use, the gap-filling material can be transported in close stacks, thereby ensuring safety during use while also achieving high transport efficiency.

[0020] If the gap filler is made of resin, it has a lightweight and easy-to-handle structure. It is of course easy for workers to lift, and can be stacked in multiple sheets and held in a stacked state, making it easy to handle. Furthermore, if the fixing member is also made of resin, the entire scaffolding board gap filling device can have a weight that is easy to carry around.

[0021] Therefore, for example, in a long structure that is usually several hundred meters long and is an unstable temporary scaffolding, an aerial structure, the work of filling the gaps between the scaffolding boards, which are very numerous, can also be significantly reduced in terms of labor and labor burden compared to the past. In addition, safety can also be greatly improved.

[0022] If the fixing member is a resin-made independent part that can be disassembled from the gap filler, for example, by various design changes such as different length dimensions and other specifications, a variety of expansions corresponding to the next-generation scaffolding are possible.

[0023] If the above fixing member has a bifurcated plate-shaped engagement fixing part with an inner peripheral cross-sectional shape corresponding to the outer peripheral cross-sectional shape of the frame member of the support frame, and this engagement fixing part can be elastically deformed outward on both sides with respect to the above frame member, and is configured to elastically engage with the outer peripheral surface of the above frame member in a holding state, the installation and removal of the scaffolding board gap filling device of the present invention in the temporary scaffolding are simple, and the effect in the work of filling the gaps between the scaffolding boards is further improved.

[0024] The combined engagement structure of the above gap filler and the above fixing member is configured such that the engagement receiving part of the above gap filler and the engagement part of the above fixing member are engaged and fixed in the vertical direction of the above gap filler. By inserting the engagement part of the fixing member into the engagement receiving part of the gap filler from the lower side and performing a rotation operation to engage and fix, the assembly and disassembly work of the gap filler and the fixing member are easy, and the assembly and disassembly work on the temporary scaffolding at the work site can also be performed easily and safely. Also, since the fixing is by a rotation operation, even if a horizontal load is applied to the gap filler during use, there is no risk that the fixing member will accidentally detach from the gap filler.

Brief Description of the Drawings

[0025] [Figure 1] Fig. 1(a) is a perspective view of a scaffolding board filling device according to an embodiment of the present invention as seen from above the upper surface of the scaffolding board filling device, and Fig. 1(b) is a perspective view of the bottom surface of the scaffolding board filling device as seen from below. [Figure 2] Fig. 2(a) is a front view, and Fig. 2(b) is a side view showing the scaffolding board filling device. [Figure 3] Fig. 3(a) is a plan view, and Fig. 3(b) is a bottom view showing the scaffolding board filling device. [Figure 4] Fig. 4(a) is a cross-sectional view taken along line IV-IV in Fig. 3(a) of the combined engagement structure of the gap filler and the fixing member of the scaffolding board filling device, and Figs. 4(b), (c), and (d) are cross-sectional views showing the combination procedure of the gap filler and the fixing member. [Figure 5] Fig. 5(a) is a plan view, Fig. 5(b) is a bottom view, and Fig. 5(c) is a cross-sectional view taken along line C-C in Fig. 5(a) showing the gap filler of the scaffolding board filling device. [Figure 6] Fig. 6(a) is a perspective view, Fig. 6(b) is a front view, and Fig. 6(c) is a side view showing the fixing member of the scaffolding board filling device. [Figure 7] Fig. 21 is a perspective view showing a temporary scaffolding using the scaffolding board filling device. [Figure 8] Fig. 8(a) is a front view showing the state before assembling the scaffolding board filling device to the temporary scaffolding, and Fig. 8(b) is a front view showing the state where the scaffolding board filling device is integrally assembled to the temporary scaffolding, showing the assembly relationship between the scaffolding board filling device and the temporary scaffolding. [Figure 9] Fig. 27 is an enlarged view of the periphery of the wedge member 57.

Embodiments for Carrying Out the Invention

[0026] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The same reference numerals indicate the same constituent members or elements throughout the drawings.

[0027] Figures 1 to 9 show the scaffolding board gap-filling device according to the present invention. Specifically, this scaffolding board gap-filling device 1 is a device for sealing and filling the gap 56 that exists between adjacent scaffolding boards 55, 55 in the temporary scaffolding 50 shown in Figure 7, and comprises a gap-filling material 2 and a fixing member 3.

[0028] In other words, as shown in Figure 7, the temporary scaffolding 50 is supported by a support frame 54 made of single pipes or the like, which extends horizontally from bridge girders, railings, etc. (not shown), with multiple suspension chains 51 attached at predetermined intervals to bridge girders, railings, etc. Specifically, the support frame 54 is formed by arranging horizontal frame members 53 called "oyago pipes" and vertical frame members 52 called "korobashi pipes" in a grid pattern. The framing connection between the vertical frame members 52 and the horizontal frame members 53 is fixed by wedge members 57, 57 that penetrate and lock into both 52, 53 in a horizontal direction, as shown in Figure 7. The present invention can be used not only for temporary scaffolding supported by suspension, but also for temporary scaffolding installed at construction sites and other sites where the ground is used as scaffolding.

[0029] The support frame 54, formed in this manner, is suspended and supported horizontally by the suspension chains 51, 51, ..., and a large number of scaffolding boards 55, 55, ... are laid across this support frame 54 to form a work platform.

[0030] Furthermore, in the temporary scaffolding 50 described above, gaps 56, 56, ... of a predetermined width inevitably exist between adjacent scaffolding boards 55, 55, ... due to the purpose of erection, etc., and these gaps 56, 56, ... are filled in a closed manner by the scaffolding board gap-filling device 1 described above.

[0031] The gap-filling material 2 is intended to close the gap 56 from above, and is a one-piece molded resin product in the form of a plate material having a roughly rectangular planar contour shape with a width dimension W that is larger than the width dimension W0 of the gap 56.

[0032] The gap-filling material 2 in the illustrated embodiment is in the form of a plate-like member having a lightweight reinforcing structure. Specifically, as shown in the illustration, it has an arch-shaped upper surface 4 with a slightly raised central portion in the width direction, and is a thin plate-like member with a predetermined thickness. A lightweight space 5 is formed on the back side to reduce the weight of the gap-filling material 2 as much as possible.

[0033] Furthermore, in relation to the lightweight structure of the gap-filling material 2, a plurality of reinforcing ribs 6, 7, 8, 9, 10, ... are integrally formed in the lightweight space 5 of the gap-filling material 2 to reinforce the strength of the thin plate-like portion of the gap-filling material 2 in the vertical direction, thereby ensuring a predetermined sufficient reinforcing strength for the gap-filling material 2. In particular, the rib 7a, which extends along the lower surface of the gap-filling material 2 from the engagement receiving portion 17 toward the outer peripheral edge direction of the gap-filling material 2 (outward in the longitudinal direction of the engagement receiving portion 17), provides sufficient strength against the force in the direction in which the rib 7a extends along the surface of the gap-filling material 2 relative to the fixing member 3. Therefore, in combination with the force supporting the gap-filling material 2 in the axial direction of the fixing member 3, safety can be ensured in the unstable installation position of the gap 56 of the temporary scaffolding 50.

[0034] Furthermore, the multiple reinforcing ribs formed on the back side of the gap-filling material 2 are formed such that the lower ends of the reinforcing ribs are on the same plane or above the lower end of the outer edge of the arch-shaped gap-filling material 2, so that when stacking gap-filling materials 2, the gap-filling material 2 to be placed on top of the lower gap-filling material 2 can be stacked stably. In this case, it is preferable that the lower end of the engagement receiving portion 18 is also formed to be on the same plane or above the lower end of the outer edge of the gap-filling material 2.

[0035] The reinforcing rib 6 is provided around the entire circumference of the outer edge on the back side of the gap-filling material 2, forming the outer frame on the back side, while the reinforcing ribs 7, 8, 9, and 10 are provided within the frame of the reinforcing rib 6, intersecting each other in a linear fashion, forming a grid of ribs. The bottom surfaces of these reinforcing ribs 6, 7, 8, 9, 10, ... form a plane that is flush with each other.

[0036] The arched upper surface 4 of the gap-filling material 2 is set to a height that allows a worker to stand comfortably against the upper surfaces 55a, 55a of the scaffolding boards 55, 55 when it is placed in contact with them. Furthermore, the upper surfaces 4a, 4a on both sides in the width direction are inclined downwards, so that the gap-filling material 2 is smoothly continuous with the upper surfaces 55a, 55a of the scaffolding boards 55, 55.

[0037] Furthermore, the gap-filling material 2 is provided with rectangular recesses 11 at both ends in the longitudinal direction, allowing the suspension chains 51 of the temporary scaffolding 50 to be inserted vertically. This enables a configuration in which the gap-filling material 2 can completely close the gaps 56 between the scaffolding boards 55, 55 all the way to the lateral ends.

[0038] In this regard, as shown in Figure 7, the gap-filling material 2 is configured to be connected and used laterally on the temporary scaffolding 50. When the longitudinal end faces 2a, 2a of both gap-filling materials 2, 2 are connected and joined together, recesses 11, 11 are formed, and these openings are closed by a rectangular cover member 12 that corresponds to these openings.

[0039] Furthermore, in this embodiment, the two longitudinal end faces 2a, 2a of the gap-filling material 2 are formed such that an end face 2aa is formed from the outer edge to the central part of the upper surface 4, an end face 2ab is formed which is a surface aligned with the center of the gap-filling material 2 by forming a recess 11, and an end face 2ac is formed which is the inner end face of the recess 11.

[0040] In particular, if the outermost longitudinal end face 2aa of the gap-filling material 2 is formed on both longitudinal end faces 2a, 2a, then when multiple scaffolding board gap-filling devices 1 are installed side by side in the longitudinal direction, it is possible to prevent one scaffolding board gap-filling device 1 from sliding over the other scaffolding board gap-filling device 1 even if it shifts in the longitudinal direction. The end face 2aa may be formed on a part of the longitudinal outer edge of the gap-filling material 2. If there are no longitudinal end faces 2a, or if there is no longitudinal end face 2a on one of the longitudinal directions, there is a risk that one of the multiple scaffolding board gap-filling devices 1 that are butted together in the longitudinal direction may slide over the other. If one slides over, the fixing member 3 may be pulled upward and unexpectedly detach from the horizontal frame member 53, and furthermore, the scaffolding board gap-filling device 1 may come off the state of covering the gap 56, exposing the gap 56.

[0041] The fixing member 3 is used to fix the gap-filling material 2 to the horizontal frame member 53 of the support frame 54, which is exposed in the gap 56 between the scaffolding boards 55, 55. It is a one-piece molded resin product in the form of a fixing clip that elastically engages with the horizontal frame member 53 of the support frame 54 from both sides in a cradling manner.

[0042] As shown in Figure 8, the fixing member 3 includes a bifurcated plate-shaped engaging fixing portion 13 having an inner cross-sectional shape corresponding to the outer cross-sectional shape of the horizontal frame member 53 of the support frame 54.

[0043] Figure 6 shows the specific structure of the fixing member 3 in the illustrated embodiment, and it mainly comprises the engaging fixing part 13 and the engaging part 18 which constitutes a combined engaging structure with the gap-filling material 2 described later.

[0044] Specifically, as shown in Figure 8, the engagement fixing portion 13 is formed in the shape of a cylindrical bifurcated plate having a cylindrical inner cross-sectional shape corresponding to the cylindrical outer cross-sectional shape of the horizontal frame member 53 which is made of a cylindrical pipe. It is elastically deformable outward on both sides relative to the horizontal frame member 53 and has a fixing structure that elastically engages with the cylindrical outer surface of the frame member 53 in a cradling and close contact manner.

[0045] Furthermore, the engagement fixing portion 13 has rectangular convex wedge-type protrusions 15, 15 integrally provided on both the left and right sides, and a rectangular upright support portion 16 integrally provided on the upper side. The left-right direction of the engagement fixing portion 13 is the direction of deformation for elastic engagement of the engagement fixing portion 13 with the horizontal frame member 53.

[0046] As shown in Figure 9, when the fixing member 3 is engaged and fixed to the horizontal frame member 53 of the temporary scaffolding 50, the wedge-fastening projections 15, 15 are positioned opposite the wedge members 57, 57 that connect and fix the vertical frame member 52 and the horizontal frame member 53, and these wedge members 57, 57 have a horizontal anti-dislodgement effect.

[0047] The support portion 16 is the part that defines the height dimension of the gap-filling material 2 when the fixing member 3 is engaged and fixed to the horizontal frame member 53. Specifically, the height dimension of the support portion 16 is set so that, when the fixing member 3 is engaged and fixed to the horizontal frame member 53, the bottom surfaces on both sides in the width direction of the gap-filling material 2 are in close contact with the upper surfaces 55a, 55a of the scaffolding boards 55, 55.

[0048] Furthermore, the gap-filling material 2 and the fixing member 3 are equipped with an engagement structure that allows them to be disassembled and assembled as a single unit.

[0049] In the illustrated embodiment, the combined engagement structure of the gap-filling material 2 and the fixing member 3 is configured such that the engagement receiving portion 17 of the gap-filling material 2 and the engagement portion 18 of the fixing member 3 engage and fix the gap-filling material 2 in the vertical direction.

[0050] As shown in Figure 5, the engagement receiving portion 17 of the gap-filling material 2 comprises a through-hole 20 that penetrates vertically and a locking shoulder portion 21 provided on the outer circumference of the upper end opening of the through-hole 20. The locking shoulder portion 21 can be a plane formed circumferentially outward from the upper end opening of the through-hole 20, or it may be the upper end of the opening itself. The locking shoulder portion 21 is configured as the bottom plate of the engagement recess h so that the engagement portion 18 of the fixing member 3 does not protrude above the upper surface of the gap-filling material 2 when the engagement portion 18 is engaged.

[0051] As shown in Figures 5(a) and 5(b), the insertion hole 20 has a rectangular opening shape, and the locking shoulder portion 21 is part of the bottom plate of the engagement recess h formed inside the cylindrical engagement receiving portion 17, as shown in Figure 5(a) (see Figure 5(c)). The protrusion 21a adjacent to the locking shoulder portion 21 is a protrusion formed within the engagement recess h with a thickness greater than the locking shoulder portion 21 in order to stop the rotation of the engagement portion 18 at a predetermined position.

[0052] As shown in Figure 6, the engaging portion 18 of the fixing member 3 is integrally provided coaxially at the upper end of the support portion 16 of the engaging fixing portion 13, and has the form of an engaging projection having a locking projection 22 and an overhanging portion 23.

[0053] The locking projection 22 of the engagement portion 18 is shaped to be insertable into the insertion hole 20 of the gap-filling material 2 and to be able to lock vertically onto the locking shoulder portion 21 of the gap-filling material 2. Specifically, it has a rectangular cross-sectional shape corresponding to the inner circumferential surface of the insertion hole 20.

[0054] The protruding portion 23 of the engaging portion 18 has a contact surface that abuts against the lower end opening edge of the insertion hole 20 from below when the locking projection 22 is locked onto the locking shoulder portion 21 of the gap-filling material 2. Specifically, this protruding portion 23 is formed from the upper end plane of the support portion 16 of the engaging fixing portion 13.

[0055] Furthermore, the locking projection 22 and the protruding portion 23 are integrally connected by a connecting portion 24 having a length corresponding to the insertion length of the insertion hole 20 of the gap-filling material 2, and this connecting portion 24 is in the form of a shaft that can rotate within the insertion hole 20.

[0056] Then, referring to Figure 4, the locking projection 22 of the fixing member 3 is inserted from below upward into the insertion hole 20 of the gap filler 2 with the rotational direction aligned, and the protruding portion 23 is brought into contact with the lower end opening edge of the insertion hole 20 (Figure 4(b)→(c)). In this state, by rotating the fixing member 3 (Figure 4(c)), the locking projection 22 also rotates and engages with the locking shoulder portion 21 of the gap filler 2 in the axial direction, thereby integrally assembling the gap filler 2 and the fixing member 3 (Figure 4(d)).

[0057] In this embodiment, a protrusion 21a is formed on the upper surface of the locking shoulder portion 21. When the locking projection 22 is rotated while inserted through the insertion hole 20, it comes into contact with the protrusion 21a and stops rotating, thereby allowing the fixing member 3 to be positioned at a predetermined rotational position.

[0058] Conversely, by performing the reverse operation from the state in which the gap-filling material 2 and the fixing member 3 are integrally assembled (Figure 4(d)→(c)→(b)), the gap-filling material 2 and the fixing member 3 are separated and disassembled.

[0059] In the illustrated embodiment of the gap-filling material 2, two rows A and B, each consisting of multiple (three in the illustrated case) engagement receiving portions 17 arranged in a straight line, are provided at predetermined intervals in the width direction. This configuration takes into account that the widthwise relative position between the gaps 56 between the scaffolding boards 55, 55, ... of the temporary scaffolding 50 and the horizontal frame members 53 of the support frame 54, or in other words, the vertical relative position of the temporary scaffolding 50, is not constant and shifts relatively as the extended length of the temporary scaffolding 50 increases.

[0060] In other words, in this embodiment, row A of the main engagement receiving parts 17, 17, ... is provided at the center of the width direction of the gap-filling material 2, and row B of the auxiliary engagement receiving parts 17, 17, ... is provided at a position shifted by a predetermined distance in the width direction from row A of the main engagement receiving parts 17, 17, .... As a result, by appropriately selecting and using row A or B of the engagement receiving parts 17, 17, ... to which the fixing member 3 is attached, corresponding to the width direction relationship between the gap 56 between the scaffolding boards 55, 55, ... and the horizontal frame members 53 of the support frame 54, the width direction position of the gap 56 filled by the gap-filling material 2 can be set to an appropriate position.

[0061] Furthermore, on the upper surface 4 of the gap-filling material 2, positioning projections 30, 30, ... for stacking the gap-filling materials 2, 2, ... are provided circumferentially at the positions of the main engagement receiving parts 17, 17, ... on both ends of row A in the longitudinal direction. As a result, the positioning projections 30, 30, ... engage with the reinforcing ribs 31, 31 of the corresponding engagement receiving parts 17, 17 of the gap-filling material 2, 2, ... to be stacked on top, thereby positioning the stacked gap-filling materials 2, 2, ... and achieving a stable stacked state.

[0062] However, using the scaffolding board gap-filling device 1 configured as described above, the work of closing the gaps 56, 56, ... between adjacent scaffolding boards 55, 55, ... of the temporary scaffolding 50 shown in Figure 7 can be performed by first positioning the gap-filling material 2 in correspondence with the target gap 56, and then engaging the fixing members 3, 3, ... which are integrally combined with the gap-filling material 2, with the horizontal frame members 53 of the support frame 54 present in the gap 56 from above. This causes the fixing members 3, 3, ... to elastically engage and fix with the horizontal frame members 53, and the widthwise sides of the gap-filling material 2 to abut and engage with the upper surfaces 55a, 55a of the adjacent scaffolding boards 55, 55, thereby closing the target gap 56.

[0063] When the temporary scaffolding 50 is dismantled after the designated construction or repair work is completed, the scaffolding board gap-filling devices 1, 1, ... which had been filling the gaps 56, 56, ... between the scaffolding boards 55, 55, ... can be easily removed from the temporary scaffolding 50 by lifting them upwards. Furthermore, when transporting the scaffolding board gap-filling devices 1, 1, ... the gap-filling material 2 and fixing member 3 can be easily disassembled, and multiple gap-filling materials 2, 2, ... can be stacked.

[0064] As described in detail above, the scaffolding board gap-filling device 1 of this embodiment provides the following unique effects.

[0065] (a) The temporary scaffolding 50 has a gap-filling material 2 that closes the gap 56 between the scaffolding boards 55, 55 from above, and a fixing member 3 that fixes the gap-filling material 2 to the horizontal frame member 53 of the support frame 54 that is present in the gap 56, and these gap-filling material 2 and fixing member 3 are integrally assembled in a detachable manner, and since these gap-filling material 2 and fixing member 3 are made of resin, it has a lightweight and easy-to-handle structure, and can be lifted by a worker with one hand, and multiple pieces can be stacked together and held, making it easy to handle.

[0066] Therefore, in the case of long structures that are typically hundreds of meters long, and especially in the case of unstable temporary scaffolding 50 that is an aerial structure, the work of filling in the gaps 56 between the numerous scaffolding boards 55, 55, ... can be greatly reduced in terms of time and effort compared to conventional methods, and safety can be greatly improved.

[0067] (b) Since the engagement structure is formed by integrally combining a resin gap-filling material 2 and a fixing member 3 in a detachable manner, it is lightweight and can be disassembled and made smaller for transport, making it even easier to handle compared to conventional products.

[0068] (c) Since the fixing member 3 is a separate resin component that can be disassembled from the gap-filling material 2, a wide variety of applications are possible to accommodate next-generation scaffolding by changing the design in various ways, such as the length dimensions, to different standards.

[0069] (d) The fixing member 3 is provided with a bifurcated plate-shaped engaging fixing portion having an inner cross-sectional shape corresponding to the outer cross-sectional shape of the frame member 53 of the support frame 54, and this engaging fixing portion is elastically deformable outward on both sides relative to the frame member 53, and is a fixing structure that elastically engages with the outer surface of the frame member 53 in a cradling manner, so that the installation and removal of the scaffolding board gap filling device 1 on the temporary scaffolding 50 is easy, and in synergy with the structural features of (a) above, the operational efficiency of filling the gap 56 between the scaffolding boards 55, 55 is further improved.

[0070] (e) The combined engagement structure of the gap-filling material 2 and the fixing member 3 is configured such that the engagement receiving portion 17 of the gap-filling material 2 and the engagement portion 18 of the fixing member 3 engage and fix the gap-filling material 2 in the vertical direction, and the engagement and fixation is achieved by inserting the engagement portion 18 of the fixing member 3 into the engagement receiving portion 17 of the gap-filling material 2 from below and rotating it, making the assembly and disassembly of the gap-filling material 2 and the fixing member 3 easy, and allowing the assembly and disassembly to be performed easily and safely on the temporary scaffolding 50 at the work site.

[0071] The embodiments described above are merely preferred embodiments of the present invention, and the present invention is not limited to these embodiments; various design modifications are possible within their scope.

[0072] For example, the specific structure of the gap-filling material 2 and fixing member 3 that constitute the scaffolding board gap-filling device 1 can be modified in various ways, as long as they have the same function as the illustrated embodiment.

[0073] Furthermore, regarding the specific engagement structure between the gap-filling material 2 and the fixing member 3, other engagement structures having the same function as the illustrated embodiment can also be adopted. [Explanation of symbols]

[0074] 1. Scaffolding board gap filling device 2. Gap filling material 3 Fixing member 5. Lightweight space-saving gap-filling material 6, 7, 8, 9, 10 Reinforcement ribs 13 Engagement fixing part 17. Engagement receiving portion of gap-filling material 18 Engaging portion of the fixing member 20 Through holes 21 Locking shoulder 22 Locking protrusion 23 Overhang 24 Connecting part H0 Gap width dimension H width dimension of gap filler material 50 Temporary scaffolding 51. Suspension chain 52 Vertical frame members 53 Horizontal frame member 54 Support Frame 55 scaffolding planks 55a Upper surface of scaffolding board 56 gaps

Claims

1. In a temporary scaffolding where numerous scaffolding boards are laid on a support frame, a device for sealing the gaps between adjacent scaffolding boards is provided. A plate-shaped gap-filling material formed to a size that can close the gap from above, and a fixing member that fixes this gap-filling material to the frame member of the support frame present in the gap, are assembled in a detachable manner. The fixing member is in the form of a fixing clip that can elastically engage with the frame member of the support frame from both sides in a cradling manner. The combination engagement structure of the gap-filling material and the fixing member is configured such that the engagement receiving portion of the gap-filling material and the engagement portion of the fixing member engage and fix the gap-filling material in the vertical direction. The engagement receiving portion of the gap-filling material has a cylindrical shape that protrudes downward, comprising a through hole that penetrates in the vertical direction and a locking shoulder portion provided on the outer circumference of the upper end opening of the through hole. The engaging portion of the fixing member is designed to be insertable into the insertion hole of the gap-filling material and has an engaging projection that can be locked vertically to the locking shoulder and a protruding portion that abuts from below against the lower end opening edge of the insertion hole when the locking projection is locked to the locking shoulder. The engagement receiving portion is provided with ribs that extend radially outward integrally from the outer surface of the engagement receiving portion along the lower surface of the gap filler material. A scaffolding board gap-filling device characterized by the following features.

2. The gap-filling material is made of resin. The scaffolding board gap filling device according to feature 1.

3. The gap-filling material is in the form of a plate-like member having a lightweight reinforcing structure, with the upper surfaces on both sides in the width direction being inclined downwards, and recesses provided at both ends in the length direction to allow the suspension chain to be inserted vertically. The scaffolding board gap filling device according to feature 1.

4. The fixing member is provided with a bifurcated plate-shaped engaging fixing portion having an inner cross-sectional shape corresponding to the outer cross-sectional shape of the frame member of the support frame, This engaging and fixing portion is elastically deformable outward on both sides relative to the frame member of the support frame, and has a fixing structure that elastically engages with the outer circumferential surface of the frame member in a cradling manner. The scaffolding board gap filling device according to feature 1.

5. The locking projection and protruding portion of the fixing member are integrally connected by a connecting portion which has a length corresponding to the length of the insertion hole in the gap-filling material and is in the form of a shaft portion that can rotate within the insertion hole. The scaffolding board gap filling device according to feature 1.

6. The fixing member is provided with a wedge-type projection that protrudes outward in the direction of deformation for elastic engagement. The scaffolding board gap filling device according to feature 1.

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