Temporary roof equipment

Abstract

To provide a temporary roof device.SOLUTION: There is provided a temporary roof device, in which, regarding mutually orthogonal X and Y directions, with unit frames (8), (8) extending in the Y direction being spaced apart in the X direction, lower crosspiece members (34) are erected at a specified interval (S) in the Y direction, a roof panel (39) made of a corrugated sheet is laid over the lower crosspiece members (34) so as to overlap in the X and Y directions, and upper crosspiece members (40) are installed above the roof panel at a specified interval in the Y direction to hold the roof panel. When laying the roof panel, the corrugated portion of the roof panel (39) facing the unit frame (8) is fitted into a positioning member (38) of the lower crosspiece member (34), whereby a side edge portion (39E) of the panel can be positioned at a normal installation position where the side edge portion (39E) is inserted a predetermined depth into a housing groove (12) of the unit frame.SELECTED DRAWING: Figure 27

Description

[Technical Field]

[0001] The present invention relates to a temporary roof device, for example, a temporary roof device constituting a canopy for a protective platform for a walkway leading to a construction site to protect pedestrians on the walkway from falling objects. [Background technology]

[0002] At construction sites, for example, temporary scaffolding is erected around the structure, and construction work and other activities are carried out at high altitudes. Even in cases where temporary scaffolding is not available, work is carried out at high altitudes on existing structures and structures under construction. However, if a construction site faces a sidewalk, there is a risk that tools, work equipment, and other items used at high altitudes may fall, endangering pedestrians walking along the sidewalk.

[0003] For this reason, it is preferable to construct a sidewalk guardrail that surrounds the sides and top of the sidewalk to protect pedestrians on the sidewalk from falling objects. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-52436 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-219615 Summary of the Invention [Problem to be solved by the invention]

[0005] The sidewalk protection gantry is equipped with a temporary roof device that forms a canopy, which can protect passersby from falling objects. In this case, the temporary roof device is constructed with a highly rigid gantry, so it can be used as a shelter to ensure the safety of passersby in the event of a typhoon or other storm. In addition, in the case of a large temporary roof device, if the distance to pass is long, passersby will have to fold up their umbrellas even in rainy weather.

[0006] For this reason, even though the temporary roof device is temporary, it is necessary that the structure be properly weatherproofed and that no leaks occur. [Means for solving the problem]

[0007] Therefore, what the present invention provides as means is a temporary roof device that is constructed in a dismantlable manner using unit frames extending in the Y direction, lower and upper bay members extending in the X direction, and roof panels that have a cross-sectional shape that is wavy in the X direction and are laid with their edges overlapping in the X direction, with the unit frames being spaced apart in the X direction, and having accommodation grooves formed in the upper parts of the opposing side surfaces and gutter grooves that open upward in the lower parts, and the lower bay members are arranged in a row at a predetermined interval in the Y direction, and are connected to the pair of spaced-apart unit frames. The roof panels are laid in multiples on the lower bayonet members between the pair of spaced-apart unit frames, and when the roof panels are installed in the correct installation position with the side edge of the roof panel facing the unit frame inserted a predetermined depth toward the interior of the storage groove, the positioning members are fitted into the corrugated portions, and the upper bayonet members are arranged in a row at intervals in the Y direction and are erected on the pair of spaced-apart unit frames, and are configured to hold the roof panels from above.

[0008] In a preferred embodiment, the upper rail member is positioned at a predetermined interval between the lower rail members and is configured to press the roof panel downward between adjacent lower rail members in the Y direction when installed on a pair of unit frames.

[0009] In this case, it is preferable to fix an elastic member to the lower surface of the upper rail member so that the elastic member is in elastic contact with the roof panel. [Effects of the Invention]

[0010] According to the present invention, when constructing a temporary roof device Na, when laying a roof panel 39 on the lower batten members 34 arranged in a row at a distance S in the Y direction between unit frames 8, 8, the side edge portion 39E of the roof panel 39 can be positioned so that it is installed in the correct installation position relative to the unit frame 8, so there is no risk of mistakes in the installation position, the work is simple and easy, and a well-waterproofed structure can be formed with no risk of rain leaks.

[0011] Furthermore, if the roof panel 39 laid on the lower rail member 34 is configured to be held in a state where it is pressed downward by the upper rail member 40 at the midpoint of the spacing S between the lower rail members 34, it will not shift out of position even if it is blown by strong winds, etc. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view showing a first scaffolding structure and a second scaffolding structure constructed by a scaffolding construction process in the method for constructing a walkway protective platform equipped with a temporary roof device of the present invention. [Figure 2] FIG. 10 is a perspective view showing the gantry structure constructed by the gantry construction process. [Figure 3] This is an oblique view showing a sidewalk protection trestle constructed through the unit frame installation process, roof base formation process, roof material laying process, and roof material retention process. [Figure 4] FIG. 1 is a perspective view showing how the scaffold construction process is carried out. [Figure 5] FIG. 10 is a perspective view showing the state in which beam means is provided on the scaffold structure in the gantry construction process. [Figure 6] FIG. 4 is a perspective view showing the beam means in an exploded state. [Figure 7] 10 is a perspective view showing a state in which a mounting bracket provided with a jack means is positioned facing the upper part of a beam means during the unit frame mounting process. FIG. [Figure 8]10A is a perspective view showing the inclined structure forming step and the unit frame mounting step, and FIG. 10B is a perspective view showing a mounting bracket provided with a jack means, in relation to the unit frame mounting step. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. 10 is a cross-sectional view showing a bottom fixing means for fixing the mounting bracket and the unit frame to each other. [Figure 12] 12 is a cross-sectional view taken along the line AA in FIG. 11. [Figure 13] 1A is a perspective view showing a state in which a unit frame is attached and fixed to a mounting bracket, and FIG. 1B is a perspective view showing a state in which the unit frame is broken away. [Figure 14] Regarding the bottom fixing means, (A) and (B) are a perspective view and a cross-sectional view, respectively, showing the state before fixing, and (C) and (D) are a perspective view and a cross-sectional view, respectively, showing the state after fixing. [Figure 15] This is a perspective view showing the state in which the unit frame mounting process, rectangular frame forming process, and roof base forming process have been carried out on the gantry structure. [Figure 16] FIG. 2 is a perspective view showing a pair of end frames. [Figure 17] FIG. 10 is a perspective view showing the state in which the roof base forming process has been carried out on the gantry structure. [Figure 18] FIG. [Figure 19] 10 is a perspective view showing the connection state of the unit frame, end frame, and lower rail member at the base end side of the gantry. FIG. [Figure 20] FIG. 10 is a perspective view showing the connection state of the unit frame, end frame, and lower rail member at the tip side of the gantry. [Figure 21] FIG. 1A is a perspective view showing the roofing material laying process, and FIG. 1B is a perspective view explaining the overlapping form of the roof panel. [Figure 22] FIG. 1A is a cross-sectional view showing one example of a method for laying overlapping roof panels, and FIG. 1B is a cross-sectional view showing another example. [Figure 23]FIG. 1 is a perspective view showing a portion of an installed roof panel. [Figure 24] 10 is a cross-sectional view showing the state in which the roof panel has been installed by positioning it in the correct installation position with its side edge correctly inserted into the receiving groove. FIG. [Figure 25] FIG. [Figure 26] 1A is a perspective view showing an upper rail member, and FIG. 1B is a perspective view showing the upper rail member installed between unit frames. [Figure 27] FIG. 10 is a perspective view showing a state in which a roof material is held at the base end side of the gantry. [Figure 28] 1 shows the relationship between the lower rail member, the roof panel, and the upper rail member, where (A) is a cross-sectional view taken along the X direction, and (B) is a cross-sectional view taken along the line BB. [Figure 29] 28(A) shows a cross-sectional view of the positioning member of the lower rail member and the upper rail member, and FIG. 28(B ... DETAILED DESCRIPTION OF THE INVENTION

[0013] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0014] The drawings show an embodiment in which the temporary roof device of the present invention is provided when constructing a sidewalk protection gantry. Therefore, the construction method and construction device for the sidewalk protection gantry will be described below, and the temporary roof device of the present invention will be described in detail in the description.

[0015] (Construction process of sidewalk protection platform) The sidewalk guardrail (hereinafter simply referred to as the guardrail) is designed to protect pedestrians on the sidewalk facing the construction site from falling objects in the X direction along the sidewalk and the Y direction intersecting the sidewalk, and is constructed through the following process. (A) A scaffolding structure extending in the X direction is constructed, and a first scaffolding structure 1a and a second scaffolding structure 1b are constructed on either side of the walkway (scaffolding construction step). (B) At a height position that does not obstruct the passage of pedestrians, the first scaffolding structure 1a and the second scaffolding structure 1b are connected by a beam means 2 extending in the Y direction, and a gantry structure M is constructed by arranging multiple beam means 2 at intervals in the X direction (gantry construction process). (C) Mounting brackets 7 equipped with jack means are arranged in a row along the top of the beam means 2, and the height of the arranged mounting brackets 7 is aligned so that they follow the inclined line L1 that slopes downward toward the sidewalk (inclined structure forming process). (D) The unit frame 8 extending in the Y direction is attached and fixed to the mounting bracket 7 in a state where it is aligned with the inclined line L1 (unit frame attachment step). (E) The lower portions of unit frames 8, 8 adjacent in the X direction are connected to each other by lower rail members 34, and the plurality of lower rail members 34 are arranged at intervals in the Y direction (roof base forming process). (F) Between adjacent unit frames 8, 8 in the X direction, multiple roof panels 39 are laid on the lower rail members 34 in an overlapping state, with the side edge portions 39E of the roof panels positioned in the correct installation position inserted at a predetermined depth into the storage grooves 12 of the unit frames 8 (roof material laying process). (G) The upper portions of adjacent unit frames 8, 8 in the X direction are connected to each other by upper rail members 40, and the roof panel is held in place by arranging multiple upper rail members 40 at intervals in the Y direction (roof material holding process).

[0016] The protective platform constructed in this way comprises a unit frame 8, a lower railing member 34 and an upper railing member 40 suspended across the unit frame, and a roof panel 39 held between the two railing members 34, 40, which constitute a temporary roof device Na and provide protection for the heads of passersby.

[0017] It is preferable that the temporary roof device be configured not only to receive solid objects falling from above, but also to provide effective waterproofing during rainy weather. Large protective gantry structures must be designed to prevent rainwater leakage, as pedestrians often fold their umbrellas as they pass through. In this regard, as will be described later, the roof panel 39 is made of a corrugated sheet with a cross-sectional shape that is corrugated in the X direction, and is installed in a state where the side edge 39E of the corrugated sheet is inserted to a predetermined depth into the receiving groove 12 of the unit frame 8 in the correct installation position, thereby providing excellent waterproofing.

[0018] When constructing a protective gantry, as shown in Fig. 1, in an environment where a sidewalk P faces a construction site W, a first scaffolding structure 1a and a second scaffolding structure 1b extending in the X direction are constructed on both sides of the sidewalk P, in the X direction along the sidewalk and the Y direction intersecting the X direction (scaffolding construction process). Typically, the first scaffolding structure 1a is constructed within the premises of the construction site W, and the second scaffolding structure 1b is constructed on one side of the sidewalk opposite it, but this is not limited to this.

[0019] For ease of explanation, the direction in the Y direction toward the construction site W will be referred to as the base direction Y1, and the direction going in the opposite direction will be referred to as the tip direction Y2, and the scaffolding structure on the base side will be referred to as the first scaffolding structure 1a, and the scaffolding structure on the tip side will be referred to as the second scaffolding structure 1b.

[0020] As shown in Figure 2, the first scaffolding structure 1a and the second scaffolding structure 1b are connected by a beam means 2 extending in the Y direction at a height position that does not interfere with pedestrian traffic on the sidewalk W, and a gantry structure M is constructed by arranging multiple beam means 2, 2 at intervals in the X direction (gantry construction process). After that, the inclined structure forming process, unit frame installation process, roof base forming process, roof material laying process, roof material holding process, etc., which will be described later, are carried out, and the desired sidewalk protection trestle N, as shown in Figure 3, is constructed and completed.

[0021] As shown in the figure, the sidewalk protection truss N is a high-strength rigid structure made up of a framework of many frame members. The temporary roof device Na, which serves as a canopy over the heads of pedestrians walking on the sidewalk, is constructed by supporting and fixing roof panels 39 on a beam frame 5 with unit frames 8 and crosspieces 34, 40 connected to the unit frames, as will be described later. Therefore, even if a falling object is heavy, it will not pass through the roof panels 39 and can reliably be prevented from falling onto the sidewalk.

[0022] Furthermore, the first scaffolding structure 1a and the second scaffolding structure 1b provide the framework tower structures Nb, Nb, on which the temporary roof device Na is supported, so that the structure as a whole has high rigidity and can be used as an evacuation site to ensure the safety of passersby even in the event of a typhoon or other storm or other event.

[0023] Furthermore, the corrugated sheet that constitutes the roof panel 39 is attached with the side edge 39E correctly positioned relative to the storage groove 12 of the unit frame 8, and rainwater that overflows from the side edge 39E is suitably directed toward the gutter groove 13, thereby providing an excellent structure for rainproofing, so that there is no leaking and the clothes of passersby are not soiled.

[0024] (Scaffolding construction process) As shown in Figure 4, the first scaffolding structure 1a and the second scaffolding structure 1b are formed by utilizing temporary scaffolding commonly used at construction sites, etc. In the illustrated example, the structure is constructed by arranging support bodies 3, each of which consists of two support bodies 3a, 3b spaced apart in the Y direction, in a row at intervals in the X direction, and connecting adjacent support bodies 3, 3 to each other via connecting means 4 including scaffolding boards 4a.

[0025] As a result, the scaffolding structures 1a and 1b constitute a highly rigid frame tower structure Nb, Nb as shown in Figure 1. Furthermore, like temporary scaffolding, it provides a work platform for subsequent construction work. Note that although the illustrated example shows a wedge-tightened scaffolding, a frame scaffolding may also be used.

[0026] (gantry construction process) The first scaffolding structure 1a and the second scaffolding structure 1b are connected by a beam means 2 to form a gantry structure M. In this case, the beam means 2 is formed by a beam frame body 5 framed by pipe materials such as steel pipes, as shown in Figures 5 and 6.

[0027] The beam frame body 5 is formed by connecting an upper frame 5a and a lower frame 5b arranged parallel to each other with vertical frames 5c and diagonal members 5d, and is preferably composed of a long dedicated beam frame body 5M and a short extension beam frame body 5S.As shown in the figure, the beam frame body 5 is configured so that the overall length of the beam frame body 5 can be extended by connecting the extension beam frame body 5S to the dedicated beam frame body 5M, and this makes it possible to suitably connect the first scaffolding structure 1a and the second scaffolding structure 1b, which are constructed at a distance corresponding to the width of the sidewalk P, to each other.

[0028] In the example shown in the figure, the connection structure between the dedicated beam frame 5M and the extension beam frame 5S uses a flange-type wedge fastening means used in temporary scaffolding, but is not limited to this.

[0029] After constructing the gantry structure M through the gantry construction process, as shown in Figures 7 and 8, mounting brackets 7 equipped with jack means 6 are lined up along the top of the beam frame body 5, and the height of the lined-up mounting brackets 6 is aligned along the inclined line L1 that slopes downward toward the sidewalk (inclined structure formation process), and in this state, the unit frame 8 extending in the Y direction is attached and fixed by the mounting brackets 7 in a position that is aligned along the inclined line L1 (unit frame attachment process).

[0030] As shown in Figure 8(B), the jack means 6 has a jack portion 6b formed by a nut threaded onto a bolt shaft 6a, and a mounting bracket 7 is provided on the upper end of the bolt shaft so as to be rotatable and fixable around the horizontal axis R. The mounting bracket 7 has protrusions 7b, 7b protruding from both sides of the flat plate portion 7a, and a holding portion 7c for the unit frame 8 is formed on the upper surface of the flat plate portion 7a between the protrusions 7b, 7b.

[0031] (Slope structure formation process) As shown in Figure 8, the jack means 6 equipped with the mounting bracket 7 is installed by inserting the lower end of the bolt shaft 6a, which penetrates the jack portion and extends downward, into the upper opening of the vertical frame 5c of the beam frame body 5, and placing the jack portion 6b on the opening edge of the upper opening.

[0032] In this state, when the nut of the jack portion 6b is rotated, the bolt shaft 6a is screwed up and down to raise and lower the mounting bracket 7, and by adjusting the height of the jack means 6 arranged in a row, the height of the arranged mounting brackets 7 can be aligned along the inclined line L1 that slopes downward at a predetermined angle toward the sidewalk (inclined structure forming process). At this time, the mounting bracket 7 is fixed on the jack means 6 with its rotational position adjusted around the horizontal axis R, and the flat plate portion 7a is aligned along the inclined line L1.

[0033] (Unit frame installation process) Therefore, the unit frame 8 is attached and fixed by mounting it on the mounting bracket 7 while facing in the Y direction and aligned along the inclination line L1 (unit frame attachment process). As a result, the unit frame 8 is inclined downward in the tip direction Y2 in the Y direction, and this inclination angle forms the roof slope of the roof panel to be laid subsequently, allowing rainwater to flow down. Note that the jack means 6 can also be inclined in the opposite inclination direction to that shown in the figure, that is, downward in the base direction Y1, and this can be freely selected depending on the surrounding conditions of the sidewalk P.

[0034] (Unit frame configuration) As shown in Figures 9 and 10, the unit frame 8 is made of a shape extruded from a metal material such as aluminum, and is formed so as to have a cross-sectional shape that is symmetrical on the left and right sides with respect to the central vertical wall 9.

[0035] An upper horizontal wall 10 and a lower horizontal wall 11 are integrally formed at the upper and lower ends of the vertical wall 9, and an upper storage groove 12 and a lower gutter groove 13 are provided on both sides of the vertical wall 9, with the storage groove 12 opening to the side. Near the lower end, the vertical wall 9 forms branch walls 15, 15 that branch to the left and right via a step wall 14 facing the storage groove 12, and a locking groove 16 that opens downward is formed between the branch walls 15, 15.

[0036] The gutter groove 13 is formed by extending lower horizontal walls 11, 11 laterally from the lower ends of the branch walls 15, 15, and by erecting a side wall 17 from the end of the lower horizontal wall 11 and extending an inward rib wall 18 to the upper end of the side wall 17, a narrowed opening 19 is formed between the tip of the rib wall 18 and the branch wall 15.

[0037] By forming such gutter 13, the side edge 39E of roof panel 39 is accommodated in accommodation groove 12, as shown by the chain line in the figure, so that rainwater overflowing from side edge 39E is suitably received by gutter 13 and drained at the downward gradient of the inclination angle along gutter 13. In this way, gutter 13 functions as a gutter to receive rainwater overflowing from side edge 39E of roof panel 39 and allow it to flow down in the longitudinal direction, so it is not limited to the cross-sectional shape shown in the figure, and the cross-sectional shape can be changed as desired as long as it can function as a gutter.

[0038] As shown in Figures 8 and 9, the unit frame 8 is configured to be attached and fixed over almost the entire length of the upper frame 5a of the beam frame body 5 by joining and extending a long dedicated unit frame 8M arranged in the base end direction Y1 and a short extension unit frame 8S arranged in the tip end direction Y2.

[0039] In this case, a coupling means is provided to connect the joint ends of the dedicated unit frame 8M and the extension unit frame 8S. The coupling means is configured so that a coupling member 20 protruding from one of the frames 8 (8S) is inserted into the gutter groove 13 of the other frame 8 (8M). As a result, the coupling member 20 can be simply and easily protruded by inserting it into the gutter groove 13 of one of the frames 8 (8S) and fastening it. Then, by inserting the coupling member 20 into the gutter groove 13 of the other frame 8 (8M), the coupling member 20 and the gutter groove 13 can be suitably connected without any rattle. In this case, the coupling member 20 is formed from a groove-shaped member as shown in the figure and is configured so as not to block the drainage flow path of the gutter groove 13. Although not shown in the figure, in addition to the joint member 20, connecting fittings may be provided on the upper horizontal wall 10 or the lower horizontal wall 11 at the joint ends of both unit frames 8M, 8S, and the connecting fittings may be fastened together with bolts and nuts while being joined together.

[0040] 9 and 10, lower connecting fittings 21 that protrude laterally are fixed to the side walls 17, 17 of the unit frame 8, and are arranged in a row at predetermined intervals in the longitudinal direction of the unit frame 8. The lower connecting fittings 21 are used as plug means for connecting and fixing lower rail members 34 that are installed between adjacent unit frames 8, 8 during the roof base forming process described below.

[0041] Additionally, upper connecting fittings 22, each consisting of a pair of socket member 22a and attachment member 22b arranged side by side in the width direction of the upper horizontal wall 10, are fixed to the upper horizontal wall 10, and are arranged in a row at a predetermined interval in the longitudinal direction of the unit frame 8. In this case, the upper connecting fittings 22 are provided at a location away from the lower connecting fittings 21 in the Y direction. The upper connecting fittings 22 are used to connect and fix upper rail members 40 installed between adjacent unit frames 8, 8 during the roof material holding process described below. The socket members 22a form a rectangular cylindrical insertion space above the upper horizontal wall 10. The attachment fittings 22b have two plate portions with open tops, and holes 42b that pass through the plate portions.

[0042] (Mounting structure of unit frame to mounting bracket) By mounting the unit frame 8 on the flat plate portion 7a of the mounting bracket 7, the lower side walls 11, 11 are placed on the holding portion 7c between the protrusions 7b, 7b, and in this state are removably fixed by the bottom fixing means 23.

[0043] 10, the unit frame 7 is formed so that the width of the opening is narrowed by providing inwardly projecting lips 16a from both edges of the downward opening of the locking groove 16, and the opening width W1 is formed so that W2 is greater than W1 within the locking groove 16. Therefore, a locking step 16b is formed within the locking groove 16 by the lips 16a.

[0044] In contrast, the flat plate portion 7a of the mounting bracket 6 has an insertion hole 24 that communicates with the locking groove 16. The insertion hole 24 is formed as an elongated hole that extends in the longitudinal direction of the locking groove 16, and as shown in Figure 14(D), the elongated hole is formed so that its longitudinal dimension W3 satisfies W3 > W2, and its lateral dimension W4 satisfies W4 ≥ W1.

[0045] A fixing bolt 26 having a head 25 that can be inserted and removed and engaged with the insertion hole 24 and engagement groove 16 thus formed is provided, and the bottom fixing means 23 is thereby constructed.

[0046] As shown in Figure 14(B), the head 45 of the fixing bolt 26 has a roughly rectangular shape when viewed from above, with a pair of diagonally opposite corners removed, and is formed so that the longitudinal dimension W5 satisfies W2 ≥ W5 > W1, and the lateral dimension W6 satisfies W1 ≥ W6.

[0047] Therefore, with the unit frame 8 mounted on the flat plate portion 7a of the mounting bracket 7 and the opening of the locking groove 16 aligned with and communicating with the insertion hole 24 of the flat plate portion 7a, the head 25 of the fixing bolt 26 is inserted into the locking groove 16 from below the flat plate portion 7a as shown in Figures 14(A) and 14(B), and then the fixing bolt 26 is rotated approximately 90 degrees as shown in Figures 15(C) and 15(D), so that the head 25 is locked against the locking step portion 16b and does not come off. Then, by screwing a nut 27 onto the threaded shank of the fixing bolt 26, the bottom of the unit frame 8 is fastened to the flat plate portion 7a of the mounting bracket 7.

[0048] (Rectangular frame forming process and roof base forming process) After the unit frame 8 is attached to the platform structure M by the unit frame attachment process, as shown in Figure 15, of the two end portions of the unit frames 8, 8 adjacent to each other in the X direction, the ends in the base end direction Y1 are connected to each other by a first end frame 28, and the ends in the tip end direction Y2 are connected to each other by a second end frame 29, thereby forming a rectangular frame as a whole (rectangular frame formation process).

[0049] Furthermore, as shown in Figure 17, the lower parts of unit frames 8, 8 located between end frames 28, 29 and adjacent to each other in the X direction are connected to each other by lower rail members 34 via the lower connecting fittings 21, and multiple lower rail members 34 are arranged at intervals S (preferably equal intervals S) in the Y direction (roof base formation process).

[0050] (End frame configuration) 16, the first end frame 28 and the second end frame 29 are each formed from a long channel-shaped member 31 having a groove 30, and fixing brackets 32 formed in a substantially horizontal U-shape are fixed to both ends of the member 31 on the opposite side of the groove 30, and a locking pin 33 is provided on the fixing brackets 32. The first end frame 28 and the second end frame 29 have the same configuration, but are arranged symmetrically facing each other, with the grooves 30 facing each other.

[0051] 19 and 20, the ends of the moldings 31 of the end frames 28, 29 are fitted together with the fixing brackets 32 into the accommodation grooves 12 of the unit frame 8. The locking pins 33, which were raised during fitting, are then lowered after fitting, so that the locking pins 33 are inserted through the holes 10a formed in the upper lateral wall 10 of the unit frame 8 and the holes 32a (see FIG. 16) formed in the fixing brackets 32, thereby locking and fixing them together.

[0052] (Configuration of lower crosspiece) As shown in Figure 18, the lower rail member 34 is formed from a square pipe material, and has external fittings 35 formed in a roughly horizontal U-shape fixed to both ends, with tongue pieces 36, 36 extending above and below the external fitting 35 and a locking pin 37 provided.

[0053] In this case, positioning members 38 are fixed to the upper surface of the lower rail member 34 near both ends, and when the roof panel 39 is laid on the lower rail member 34 in the roof material laying process described below, the positioning members 38 position the roof panel 39 so that the side edge 3E of the roof panel 39 fits correctly inside the storage groove 12 of the unit frame 8. In the illustrated embodiment, the positioning members 38 are one-piece molded plastic parts with tongue portions 38b extending from both sides of the angled portion 38a, and the tongue portions 38b are fixed to the lower rail member 34 with rivets or the like, causing the angled portion 38a to protrude from the upper surface of the lower rail member 34.

[0054] As shown in Figures 19 and 20, the lower rail member 34 is fixed to the lower connecting fitting 21 of the unit frame 8 by inserting the external fitting 35 onto the lower connecting fitting 21 and clamping the lower connecting fitting 21 from above and below with the tongues 36, 36, and then inserting a locking pin 37 through the hole 36a (see Figure 18) formed in the tongues 36, 36 and the hole 20a (see Figure 9) formed in the lower connecting fitting 21.

[0055] (Roofing material installation process) Next, as shown in Figures 21 to 24, between adjacent unit frames 8, 8 in the X direction, multiple roof panels 39 are laid on top of the lower rail member 34 in a state where they overlap each other in the X and Y directions (roof material laying process).

[0056] The roof panel 39 is made of a corrugated sheet with a corrugated cross section, in which peaks 39a and valleys 39b are alternately arranged at equal intervals in the X direction, and is preferably made of a resin such as FRP or other reinforced resin, and is flexible or elastic. However, it may also be made of a metal such as a thin steel plate, as long as it is flexible.

[0057] As shown in Figure 21(B), the overlapping configuration is such that in the X direction (wave direction), the side edges of the roof panels 39, 39 are overlapped over a predetermined dimension x including multiple ridges 39a, and in the Y direction (the direction of the gradient descending from the ridge side to the eaves side), the leading end of the ridge-side roof panel 39 is overlapped over a predetermined dimension y on top of the tail end of the eaves-side roof panel 39.

[0058] Figure 22 shows an example of X-direction overlap of roof panels 39 laid on the lower rail members 34. Figure 22(A) shows an example in which roof panels 39L, 39R located on both the left and right sides are laid first between a pair of left and right unit frames 8L, 8R as the bottom panels, and then the middle roof panel 39M(s) is laid from above with their side edges overlapping. In contrast, Figure 22(B) shows an example in which the right roof panel 39R is laid first, and then the middle roof panel 39M(s) are laid sequentially with their side edges overlapping, and finally the left roof panel 39L is laid with its side edges overlapping.

[0059] 22(A) or 22(B), the relationship between the roof panel 39 (39L, 39R) installed facing the unit frames 8L, 8R and the left and right positioning members 38L, 38R attached to the lower rail member 34 is set so that when the side edge 39E of the roof panel 39 is properly inserted into the accommodation groove 12 of the unit frame 8, as shown in FIG. 24—that is, when the side edge 39E is installed in a position adjacent to the vertical wall 9 with a predetermined gap G (this position is called the "normal installation position")—the angled portion 38a of the positioning member 38 fits from below into the predetermined angled portion 39a of the roof panel 39. In this case, the dimension of the gap G that determines the normal installation position is set so that the side edge 39E of the roof panel 39 covers the gutter 13 from above.

[0060] The spacing between the unit frames 8L and 8R in the X direction, the positions of the left and right positioning members 38L and 38R in the lower rail member 34, the width dimensions of each roof panel 39 and the pitch of the ridges 39a are set so that when the roof panels 39L and 39R on both sides are installed in their correct installation positions, the middle roof panel 39M can be installed in an overlapping state with the ridges 39a and valleys 39b aligned with each other relative to the roof panels 39L and 39R on both sides.

[0061] This provides an excellent rainproofing structure in which rainwater overflowing from the side edge portions 39E of the roof panels 39L, 39R on both the left and right sides toward the unit frames 8L, 8R flows suitably from the gap G along the vertical wall 9 into the gutter 13. In other words, there is no risk of rainwater overflowing from the side edge portions 39E flowing down to the outside of the gutter 13 and causing a leak.

[0062] Furthermore, in other words, if the positioning member 38 is not provided, the following problems will occur. In the installation method shown in Figure 22(A), if the left and right roof panels 39L and 39R, which were installed first as the lower panels, are not installed in the correct installation position, when the middle roof panel 39M is subsequently installed on top, the peaks 39a and valleys 39b will not be accurately aligned and overlapped, resulting in gaps between them and causing leaks. In the installation method shown in Figure 22(B), if the right roof panel 39R, which was installed first, is not installed in the correct installation position, when the left roof panel 39L is subsequently installed after the middle roof panel 39M, the side edge 39E of the left roof panel 39L will abut against and interfere with the vertical wall 9 of the unit frame 8L, preventing installation. Conversely, the left roof panel 39L will only be able to be inserted shallowly into the receiving groove 12, causing leaks. In this case, the roof panel 39 is installed manually by a worker from below the lower rail member 34. If the work proceeds without noticing the misalignment of the roof panel 39 as described above, it will be extremely difficult to correct the misalignment of the heavy roof panel 39 later, and the installation work will have to be redone.

[0063] (Roofing material retention process) After carrying out the roof material laying process as described above, as shown in Figure 25, the upper parts of adjacent unit frames 8, 8 in the X direction are connected to each other by upper rail members 40 on the laid roof panel 39, and multiple upper rail members 40 are arranged at intervals in the Y direction, thereby holding the roof panel 39 on top of the lower rail members 34 (roof material holding process).

[0064] In this case, as shown in the figure, the lower rail members 34 are arranged in a row at a predetermined interval S in the Y direction, and the upper rail member 40 is positioned facing the middle part of the interval S, preferably at a position that divides the interval S in half.

[0065] (Configuration of upper rail member) As shown in Figure 26, the upper rail member 40 is formed from a square pipe material, with a first insertion piece 41a and a second insertion piece 41b protruding from both ends, a locking pin 42 is provided on the first insertion piece 41a, and a plate-shaped elastic member 43 made of an elastic material such as rubber is fixed to the underside of the square pipe material.

[0066] When attaching the upper rail member 40, as shown in Figure 26(B), the unit frames 8L, 8R adjacent in the X direction are installed with the socket members 22a and mounting fittings 22b of the upper connecting fittings 22 facing each other. Therefore, the upper rail member 40 is fixed by first inserting the second insertion piece 41b into the socket member 22a of one unit frame 8L, and then fitting the first insertion piece 41a between the two plates of the mounting fitting 22b of the other unit frame 8R, and inserting the locking pin 42 through the hole 42a of the first insertion piece 41a (see Figure 26(A)) and the hole 42b of the mounting fitting 22b (see Figure 23).

[0067] 27 and 28, the lower rail members 34 that support the roof panel 39 from below and the upper rail members 40 that hold it from above are not installed facing each other in the vertical direction, but are installed at positions that are offset from each other in the Y direction. The upper rail members 40 are configured so that, with both ends attached to the upper connecting fittings 22 of the unit frames 8L, 8R, elastic members 43 on their undersides press against the upper surface of the roof panel 39.

[0068] As described above, the roof panel 39 is made of a flexible or elastic material and easily bends in the Y direction (the longitudinal direction of the peaks 39a and valleys 39b). Therefore, as shown in Figure 28(B), when pressed from top to bottom by the upper rail member 40 between adjacent lower rail members 34, 34, the roof panel 39 bends downward as indicated by the symbol F.

[0069] As a result, the roof panel 39, in its bent state, is pressed downward against the lower rail member 34 and upward against the upper rail member 40, thereby firmly holding it in place and preventing it from shifting out of position even when blown about by strong winds or the like.

[0070] (sidewalk protection platform) Through the above steps, the construction of the protective gantry N shown in Figure 3 is completed, and the temporary roof device Na is completed with the roof panels 39 laid between the unit frames 8. At this time, if the framework tower structure Nb is constructed from the first scaffolding structure 1a and the second scaffolding structure 1b, it is possible to follow the construction method of a conventionally known temporary scaffold, and it can be constructed simply and easily.

[0071] In this case, after the unit frame 8 is attached to the gantry structure M, the construction of the temporary roof device Na that constitutes the canopy of the protective gantry can be carried out solely around the unit frame 8 by carrying out a series of operations: arranging the end frames 28, 29 (rectangular frame forming process), arranging the lower rail members 34 (roof base forming process), laying the roof panels 39 (roof material laying process), and arranging the upper rail members 40 (roof material holding process), resulting in high work efficiency and low construction costs. Moreover, because each of the components (end frames 28, 29, lower rail members 34, roof panels 39, upper rail members 40) is configured to be assembled into a unit by being attached to the unit frame 8, component production efficiency is high, manufacturing costs are low, and component management during construction and dismantling is easy.

[0072] In particular, in the series of operations for constructing the temporary roof device Na, when laying the roof panel 39 on the lower batten members 34 arranged in a row at a distance S, the side edge 39E of the roof panel 39 can be positioned so that it is installed in the correct installation position relative to the unit frame 8, making the operation simple and easy and creating an excellent waterproof condition with no risk of leaks.

[0073] Furthermore, the roof panel 39 laid on the lower rail member 34 is held in a state where it is pressed downward by the upper rail member 40 at the midpoint of the spacing S between the lower rail members 34, so even if it is blown by a strong wind or the like, it will not shift out of position, and there is no risk of rain leaks.

[0074] (Another embodiment) FIG. 29 shows another embodiment regarding the positioning members 38 provided on the lower rail members 34 and the installation positions of the upper rail members 40 in the vertical direction.

[0075] In the above-described embodiment, the upper rail member 40 presses downward on the roof panel 39 between the adjacent lower rail members 34, 34 to cause it to bend (FIG. 28(B)). However, it is not necessary to bend the roof panel 39. As shown in FIG. 29(A), the elastic member 43 on the underside of the upper rail member 40 may be configured to fit along the top surface of the ridge portion 39a of the roof panel 39. In this case, the elastic member 43 itself can be configured to elastically deform, thereby elastically holding the roof panel 39.

[0076] Furthermore, in the above-described embodiment, the positioning member 38 has its mountain-shaped portion 38a fitted into a predetermined mountain portion 39a of the roof panel 39 from below, thereby positioning the roof panel 39 in the correct installation position (see FIG. 24), but it is not necessarily required to use the mountain-shaped portion 38a as the positioning means. As shown in FIG. 29(B), the positioning member 38 may be configured to have a valley-shaped portion 38c, and to position the roof panel 39 in the correct installation position by fitting the valley portion 39b of the roof panel 39 into the valley-shaped portion 38c, or further, the mountain-shaped portion 38a and the valley portion 8c may be configured to be connected together. [Explanation of symbols]

[0077] W construction site P Sidewalk M gantry structure N Sidewalk protection platform Na Temporary roof device Nb frame tower structure 1a First scaffold structure 1b Second scaffold structure 2 beam means 3 Post body 3a, 3b pillars 4 Connection means 4a Scaffolding board 5 Beam frame 5M dedicated beam frame 5S Extension Beam Frame 5a Upper frame 5b Bottom frame 5c vertical frame 5d diagonal 6 Jacking means 6a Bolt shaft 6b Jack part 7 Mounting bracket 7a Flat plate part 7b Protrusion 7c Holding part 8 Unit Frame 8M dedicated unit frame 8S Extension Unit Frame 9 Vertical Wall 10 Upper side wall 10a hole 11 Lower side wall 12 Receiving groove 13 Gutter 14 Step wall 15 Branching Wall 16 Locking groove 16a Rip 16b Locking step 17 Side wall 18 Ribbed Wall 19 Aperture 20 Joint member 21 Lower connecting fitting 22 Upper connecting fitting 22a Socket member 22b Mounting member 23 Bottom fixing means 24 Insertion hole 25 Head 26 Fixing bolt 27 Nut 28 First end frame 29 Second end frame 30 Groove 31 Profile material 32 Fixing bracket 32a hole 33 Locking pin 34 Lower crosspiece 35 External fitting 36 Tongue piece 36a hole 37 Locking pin 38 Positioning member 38a Yamagata section 38b Tongue part 38c Tanigata section 39 Roof Panel 39a Yamabe 39b Tanibe 39E Side edge 40 Upper crosspiece 41a First insert 41b Second insert 42 Locking pin 42a, 42b holes 43 Elastic member

Claims

1. The temporary roof device is constructed in a dismantlable manner, with respect to the mutually orthogonal X and Y directions, and includes a unit frame (8) extending in the Y direction, lower rail members (34) and upper rail members (40) extending in the X direction, and roof panels (39) having a cross-sectional shape that is wavy in the X direction and laid with their edges overlapping each other in the X direction; The unit frames (8) are arranged spaced apart in the X direction, and have receiving grooves (12) formed in the upper portions of the opposing side surfaces, and have upwardly opening gutter grooves (13) formed in the lower portions. The lower rail members (34) are arranged in a row at a predetermined interval (S) in the Y direction, and are bridged between the pair of spaced-apart unit frames (8), (8). Positioning members (38) protruding upward are provided near both ends of the lower rail members (34), The roof panels (39) are laid in a plurality on the lower rail members (34) between the pair of spaced-apart unit frames (8), (8), and when the roof panels (39) are installed in a normal installation position with the side edge portion (39E) of the roof panel (39) facing the unit frame (8) inserted a predetermined depth into the receiving groove (12), the roof panels are positioned by fitting the positioning member (38) into the corrugated portion. The upper rail members (40) are arranged in a row at intervals in the Y direction, and are installed on the pair of spaced-apart unit frames (8, 8), and are configured to hold the roof panel (39) from above.

2. The temporary roof device according to claim 1, characterized in that the upper rail member (40) is arranged at the middle of the lower rail member (34) at a predetermined distance (S), and is configured to press the roof panel (39) downward between adjacent lower rail members (34, 34) in the Y direction when installed on a pair of unit frames (8, 8).

3. 3. A temporary roof device as claimed in claim 1 or 2, characterized in that an elastic member (43) is fixed to the underside of the upper rail member (40), and the elastic member (43) is configured to be in elastic contact with the roof panel (39).

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