Panel erection method and erection jig

Abstract

This invention provides a method for erecting a panel that can suppress damage to one end of the panel when the other end of the panel is lifted upright while one end of the panel is supported on a temporary support surface. [Solution] With a lifting jig 100 having a curved portion 111 attached to one end E1 of the panel 10, the other end E2 of the panel 10 opposite to the one end E1 is lifted and the curved portion 111 is brought into contact with the temporary placement surface G. With one end E1 of the panel 10 supported from below by the lifting jig 100 on the temporary placement surface G, the other end E2 of the panel 10 is further lifted and the panel 10 is rotated around the contact point GP of the curved portion 111 that is in contact with the temporary placement surface G, thereby lifting the panel 10 upright.

Description

Technical Field

[0001] The present invention relates to a method for erecting a panel and an erecting jig.

Background Art

[0002] Conventionally, a construction method is known in which a panel unit constituting an outer wall of a building is lifted using a hoisting device such as a crane, moved to a predetermined position, and attached to a frame (see Patent Documents 1 and 2 below).

[0003] In the construction method described in Patent Document 1, the body edge of the panel unit includes a frame having a rotation mechanism, and the rotation mechanism rotates the frame around a rotation axis. The construction method described in Patent Document 2 mounts a plurality of panels constituting the panel unit on the rotation part of a gantry, and rotates the panel unit while supporting it on the rotation part around a rotation axis extending in the horizontal direction while pulling up the end of the panel unit in the vertical direction.

[0004] The construction methods described in Patent Documents 1 and 2 can rotate and erect the panel unit around the rotation axis of the frame or the gantry without supporting the end of the panel unit on a temporary placement surface such as the ground, the floor surface, or the road surface.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] If the panel does not have furring strips as described in Patent Document 1, and a support frame as described in Patent Document 2 cannot be used, when one end of a panel supported lying flat on a temporary support surface with gaps between it and the other end of the panel touches the temporary support surface, the other end of the panel will touch the temporary support surface. In this state, if the end opposite to the end touching the temporary support surface is lifted to raise the panel upright, the weight of the panel will act on the other end of the panel, potentially damaging that end.

[0007] The present invention has been made in view of the above problems, and provides a method and jig for erecting a panel that can suppress damage to one end of the panel when the other end of the panel is lifted upright while one end of the panel is supported on a temporary support surface. [Means for solving the problem]

[0008] To achieve the above objectives, embodiments of the present invention are provided. A method for erecting a panel that has been supported while lying down with a gap between it and the temporary placement surface, With a lifting jig having a curved portion attached to one end of the panel, the other end of the panel opposite to the one end is lifted and the curved portion is brought into contact with the temporary placement surface. The present invention provides a method for erecting a panel, characterized in that, while supporting one end of the panel from below with the erection jig on the temporary placement surface, the other end of the panel is further lifted, and the panel is rotated around the point where the curved portion in contact with the temporary placement surface is in contact with the surface, thereby erecting the panel.

[0009] According to this embodiment, a panel is supported lying flat with a gap between it and the temporary support surface. A lifting jig having a curved portion is attached to one end of the panel. By lifting the other end of the panel opposite to the one end with the lifting jig, the curved portion of the lifting jig makes contact with the temporary support surface. As a result, one end of the panel is supported from below by the lifting jig with its curved portion in contact with the temporary support surface. In this state, if the other end of the panel opposite to the end with the lifting jig attached is further lifted, the panel rotates around the point where the curved portion makes contact with the temporary support surface, causing the panel to stand upright.

[0010] At this time, as the angle of the panel with respect to the temporary support surface increases and the panel is raised to approach vertical, the point of contact of the curved portion with the temporary support surface shifts from the end of the curved portion to the center. This allows the panel to be supported on the temporary support surface while one end of the panel is protected by the raising jig, and facilitates the rotation of the panel around the point of contact of the curved portion, enabling the panel to be raised smoothly. Therefore, according to this embodiment, when raising the panel by lifting the other end of the panel while one end of the panel is supported on the temporary support surface, it is possible to provide a panel raising method that can suppress damage to one end of the panel.

[0011] Another embodiment of the present invention relates to the method for erecting the above-mentioned panel, The panel is supported in a lying position with a gap between it and the temporary placement surface by placing the panel on a support frame placed on the temporary placement surface.

[0012] According to this embodiment, by placing the panel on a support frame such as wooden blocks placed at intervals on the temporary placement surface, the panel can be supported in a horizontal position with a gap between it and the temporary placement surface, and a lifting jig can be attached to one end of the panel. In this state, by lifting the other end of the panel opposite to the end of the panel to which the lifting jig is attached, the panel can be rotated using the upper corner of the support frame adjacent to one end of the panel as a pivot point, and the curved portion of the lifting jig can be brought into contact with the temporary placement surface.

[0013] Yet another embodiment of the present invention relates to the method for erecting the above panel, The erection jig has a first part having the curved portion and a second part that engages with the first part and clamps one end of the panel between itself and the first part. By rotating the panel around the contact point of the curved portion and raising the panel upright, the weight of the panel disengages the engagement between the first and second parts of the uprighting jig, making the uprighting jig removable. The method is characterized by lifting the other end of the upright panel, thereby releasing the engagement between the first and second parts of the uprighting jig and removing it from the one end of the panel.

[0014] According to this embodiment, when one end of a panel is supported on a temporary placement surface via an erection jig, and the other end opposite to that end is lifted to erect the panel, the direction of the panel's own weight acting on the erection jig changes. As a result, the engagement between the first and second parts of the erection jig is released by the panel's own weight, and the clamping of the panel between the first and second parts is released. This makes the erection jig automatically detachable from one end of the panel during the process of erecting the panel. Subsequently, by further lifting the other end of the erected panel, the erection jig can be removed from one end of the panel. Therefore, the need for workers to remove the erection jig from one end (lower end) of the erected panel is eliminated, improving work efficiency and safety during panel installation.

[0015] Yet another embodiment of the present invention relates to the method for erecting the above panel, The erection jig has a first part having the curved portion and a second part that clamps one end of the panel between itself and the first part by rotating a shaft portion screwed into a screw hole in the first part in one direction. After the panel is erected, the shaft portion of the second part is rotated in the opposite direction to the one direction, thereby releasing the clamping of the panel between the first part and the second part and making the erection jig removable. The method is characterized by lifting the other end of the upright panel, thereby releasing the clamping of the panel between the first and second parts, and removing the uprighting jig from one end of the panel.

[0016] According to this embodiment, one end of a panel, supported in a horizontal position with a gap between it and the temporary placement surface, is positioned between the first and second parts of the uprighting jig. By rotating the shaft of the second part in one direction, one end of the panel can be clamped between the first and second parts. After the panel is raised to a roughly vertical position with one end of the panel supported from below by the uprighting jig, whose curved portion is in contact with the temporary placement surface, the clamping of the panel between the first and second parts is released by manually rotating the shaft of the second part in the opposite direction to the aforementioned one direction. This makes the uprighting jig detachable from one end of the panel. Subsequently, the uprighting jig can be removed from one end of the panel by further lifting the other end of the raised panel.

[0017] Another embodiment of the present invention is: An erection jig that is attached to one end of a panel that is supported lying down with a gap between it and a temporary support surface, and which supports the one end of the panel from below on the temporary support surface when the other end of the panel opposite to the one end is lifted upright, The panel has a first portion which has a curved portion that comes into contact with the temporary placement surface when the panel is raised, It is characterized by having a second portion that engages with the first portion and sandwiches one end of the panel between itself and the first portion, We provide a jig for erecting and lifting.

[0018] According to this embodiment, by engaging the second part with the first part having a warped part and sandwiching one end of the panel supported in a state of being laid with a space from the temporary placement surface between the first part and the second part, a standing-up jig can be attached to one end of the panel. In that state, by lifting the other end of the panel on the opposite side of the end of the panel to which the standing-up jig is attached, the warped part of the first part touches the temporary placement surface.

[0019] As a result, one end of the panel is supported from below by the standing-up jig having the first part with the warped part touching the temporary placement surface. In that state, when the other end on the opposite side of the end of the panel to which the standing-up jig is attached is further lifted, the panel rotates about the grounding point of the warped part with respect to the temporary placement surface, and the panel is stood up. Therefore, according to this embodiment, when the panel is stood up by lifting the other end of the panel while supporting one end of the panel on the temporary placement surface, a standing-up jig capable of suppressing damage to one end of the panel can be provided.

[0020] Still another embodiment of the present invention is in the above-mentioned standing-up jig, the warped part is characterized by having a curved shape convex outward.

[0021] According to this embodiment, when the other end on the opposite side of the end of the panel to which the standing-up jig is attached is further lifted in a state where the warped part of the first part is grounded, the angle of the panel with respect to the temporary placement surface increases, and the panel is stood up and approaches vertical. At this time, the grounding point of the warped part with respect to the temporary placement surface smoothly shifts from the end part to the central part of the warped part having a curved shape convex outward. Thereby, while protecting one end of the panel with the standing-up jig, the panel is supported on the temporary placement surface, and the rotation of the panel about the grounding point of the warped part is facilitated, and the panel can be smoothly stood up.

[0022] Still another embodiment of the present invention is in the above-mentioned standing-up jig, the first part has a support part provided on the warped part and a first support piece fixed to the support part and arranged on one side of the panel. The second portion is characterized by having a second support piece positioned on the other side of the panel and sandwiching the panel between itself and the first support piece.

[0023] According to this embodiment, by supporting the curved portion with the support portion, deformation of the curved portion due to the weight of the panel can be suppressed when the curved portion touches the ground or when the panel is erected. Furthermore, the support portion supports the first support piece, and one end of the panel can be clamped between the first support piece located on one side of the panel and the second support piece located on the other side of the panel.

[0024] Yet another embodiment of the present invention is the erection jig described above, The second portion further includes a movable member to which a pin is fixed, which extends in an axial direction intersecting the curved portion while engaged with the first portion and is inserted through a through hole in the second support piece. The movable member is characterized in that it is movably supported by the support portion such that it moves in the axial direction by receiving the weight of the panel from one end of the panel that is raised upright, so that the pin can exit the through hole of the second support piece.

[0025] According to this embodiment, when one end of the panel is supported on the temporary placement surface via an uprighting jig, and the other end opposite to that end is lifted to raise the panel, the direction of the panel's own weight acting on the uprighting jig changes. Then, from one end of the panel, the panel's own weight begins to act on the movable member of the second part in a direction intersecting the curved portion of the first part. As a result, the movable member moves in the axial direction of the pin that intersects the curved portion of the first part, and the pin that was inserted through the through hole of the second support piece comes out of the through hole of the second support piece.

[0026] As a result, the second support piece moves in the thickness direction of the panel, perpendicular to the axial direction of the pin, and the clamping of the panel between the first and second support pieces is released. This makes the erection jig removable from one end of the panel. Subsequently, by further lifting the other end of the erected panel, the erection jig can be removed from the end of the panel. Therefore, the need for workers to remove the erection jig from the lower end of the erected panel is eliminated, improving work efficiency and safety during panel installation.

[0027] Yet another embodiment of the present invention is the erection jig described above, The second support piece is characterized in that it is supported by the support portion so as to be movable in a direction that intersects the axial direction and moves away from the first support piece.

[0028] According to this embodiment, when the pin of the movable member disengages from the through-hole of the second support piece, the second support piece, which is supported by the support portion of the first part, moves in a direction that intersects the axial direction of the pin and moves away from the first support piece. As a result, the distance between the first support piece and the second support piece is expanded, and the clamping of the panel between the first support piece and the second support piece is released. In addition, when the pin of the movable member disengages from the through-hole of the second support piece, the second support piece is supported by the support portion of the first part, preventing the second support piece from falling off the lifting jig.

[0029] Yet another embodiment of the present invention is the erection jig described above, The second support piece has a shaft portion that is screwed into the screw hole of the support portion and a jaw portion attached to the tip of the shaft portion, and is characterized in that one end of the panel is clamped between the jaw portion and the first support piece by rotating the shaft portion in one direction.

[0030] According to this embodiment, one end of the panel is positioned between the first support piece of the first part and the jaw portion of the second support piece of the second part, and by rotating the shaft portion of the second support piece in one direction, one end of the panel can be clamped between the jaw portions of the first and second support pieces. Alternatively, after the panel is raised to a roughly vertical position with one end of the panel supported from below by a lifting jig whose curved portion is in contact with the temporary placement surface, the shaft portion of the second support piece is manually rotated in the opposite direction to the aforementioned one direction. This releases the clamping of the panel between the jaw portions of the first and second support pieces, and the lifting jig becomes detachable from one end of the panel. Subsequently, by further lifting the other end of the raised panel, the lifting jig can be removed from one end of the panel.

[0031] Yet another embodiment of the present invention is the erection jig described above, The support portion is characterized by having a plurality of fixing portions capable of fixing the first support piece in the width direction along one end of the panel sandwiched between the first support piece and the second support piece.

[0032] According to this embodiment, it becomes possible to attach the uprighting jig to individual panels with different widths and structures. Specifically, the first support piece can be fixed to a fixing piece among a plurality of fixing pieces provided on the support part of the first part, which is located at an appropriate position according to the width and structure of each individual panel. As a result, one end of an individual panel with a different width and structure can be clamped between one or more first support pieces of the first part fixed at an appropriate position and the second support piece of the second part, and the uprighting jig can be attached to one end of the panel. [Effects of the Invention]

[0033] According to the above embodiments of the present invention, when the other end of the panel is lifted upright while one end of the panel is supported on a temporary support surface, a panel erection method and erection jig can be provided that can suppress damage to one end of the panel. [Brief explanation of the drawing]

[0034] [Figure 1] This is a flowchart illustrating a method for erecting a panel according to an embodiment of the present invention. [Figure 2] These are a side view (side) and a side view (bottom) showing an example of a panel according to an embodiment of the present invention. [Figure 3] This is a three-view drawing of a panel erection jig according to an embodiment of the present invention. [Figure 4] Figure 3 shows the side view (side) and side view (bottom) of the erection jig in its installed state. [Figure 5A] Figure 1 shows the grounding of the erection jig and the process of erecting the panel. [Figure 5B] Figure 1 shows the grounding of the erection jig and the process of erecting the panel. [Figure 5C] Figure 1 shows the grounding of the erection jig and the process of erecting the panel. [Figure 6] This is a perspective view of a standing jig according to another embodiment of the present invention. [Figure 7] Figure 6 is an exploded perspective view of the erection jig. [Figure 8] This is a cross-sectional view of the uprighting jig in Figure 6 before the movable member moves. [Figure 9] This is a cross-sectional view of the uprighting jig in Figure 6 after the movable member has moved. [Figure 10] This is a cross-sectional view of the erection jig in Figure 6 after the second support piece has moved. [Modes for carrying out the invention]

[0035] Hereinafter, embodiments of the panel erection method and erection jig of the present invention will be described with reference to the attached drawings. In this specification and drawings, substantially identical components may be denoted by the same reference numerals to avoid redundant explanations.

[0036] [Embodiment 1] Figure 1 is a flowchart of the panel erection method M according to Embodiment 1 of the present invention. Figure 2 is a side view (side) and a side view (bottom) showing an example of a panel 10 in the panel erection method M of this embodiment. Figure 3 is a three-view drawing including a front view, a top view, and a left side view of the erection jig 100 according to this embodiment. Figure 4 is a side view (side) and a side view (bottom) showing the state in which the erection jig 100 of Figure 3 is attached to the panel 10.

[0037] In Figures 2 and 4, the right-hand side view is a side view (side) showing the side of the panel 10 facing sideways when the panel 10 is attached to the building, and the left-hand side view is a side view (bottom) showing the side of the panel 10 facing downwards when the panel 10 is attached to the building.

[0038] The panel erection method M of this embodiment is a method for erecting a panel 10, which is supported in a lying position with a gap between it and a temporary placement surface G such as the ground, floor, or road surface, in a generally vertical position, as shown in Figure 2.

[0039] Panel 10 is supported in a horizontal position with a gap between it and the temporary placement surface G, for example, by being placed on a support frame C which is placed on the temporary placement surface G. In the example shown in Figure 2, the support frame C is a pair of wooden beams placed at a distance from each other below both ends in the longitudinal direction of panel 10, which has a roughly rectangular plate shape.

[0040] Furthermore, in the example shown in Figure 2, panel 10 is a curtain wall that constitutes the exterior wall of a building. Panel 10 has, for example, a core material 11 and a surface material 12. The core material 11 is composed of, for example, a structure made of a non-metallic solid material, insulation material, gasket, and waterproof sheet.

[0041] The surface material 12 is attached to the surface of the core material 11 via a structure, and a ventilation layer is formed between the surface material 12 and the core material 11. In the example shown in Figure 2, the surface material 12 is made from thinned timber. In other words, the panel 10 is a thinned timber curtain wall made using thinned timber. Note that the panel 10 may be a curtain wall other than a thinned timber curtain wall, such as an aluminum curtain wall or a PC (Precast Concrete) curtain wall.

[0042] At one end E1 in the longitudinal direction of panel 10, the end of the surface material 12 protrudes from the end of the core material 11 in the longitudinal direction of panel 10. At the other end E2 of panel 10, opposite to the end E1, the end of the core material 11 protrudes more in the longitudinal direction of panel 10 than the end of the surface material 12.

[0043] Therefore, if one end E1 of the panel 10 is placed on the temporary support surface G and the panel 10 is erected, the weight of the panel 10 will act on that end E1, potentially damaging it. In particular, if the panel 10 is a thinned timber curtain wall with thinned timber used for the surface material 12, damage to the surface material 12 protruding from one end E1 of the panel 10 becomes a problem.

[0044] Therefore, the panel erection method M of this embodiment includes a step P1 of attaching an erection jig 100 to one end E1 of the panel 10, as shown in Figure 1. The panel erection method M also includes a step P2 of grounding the erection jig 100, a step P3 of erecting the panel 10, and a step P4 of removing the erection jig 100.

[0045] As shown in Figure 3, the uprighting jig 100 is attached to one end E1 of the panel 10, which is supported in a generally horizontal position with a gap between it and the temporary placement surface G, as shown in Figure 4. Hereinafter, this state in which the uprighting jig 100 is attached to one end E1 of the generally horizontally laid panel 10 will be referred to as the "mounted state of the uprighting jig 100". When the panel 10 is raised upright by lifting the other end E2 of the panel 10 opposite to the one end E1 of the panel 10 from its mounted state, the uprighting jig 100 supports one end E1 of the panel 10 from below on the temporary placement surface G.

[0046] As shown in Figure 3, the panel erection jig 100 has a first part 110 and a second part 120. The first part 110 has a curved portion 111 that contacts the temporary placement surface G when the panel 10 is erected. The second part 120 engages with the first part 110 and clamps one end E1 of the panel 10 between itself and the first part 110. Note that the up and down, left and right, and vertical and horizontal directions in the following description of the panel erection jig 100 in Figure 3 refer to the up and down, left and right, and vertical and horizontal directions in the mounted state of the panel erection jig 100 shown in Figure 4.

[0047] The curved portion 111 of the first part 110 is a plate-like portion that comes into contact with the temporary placement surface G when the panel 10 is erected. The curved portion 111 has a convex curved shape that faces outward from the erection jig 100. However, the shape of the curved portion 111 is not limited to a curved shape. The curved portion 111 only needs to have a curved shape that is convex towards the outward from the erection jig 100. Specifically, the curved portion 111 may have a bent shape formed by bending a flat plate at one or more points.

[0048] If the curved portion 111 has a curved shape that is convex outward, the radius of curvature of the curved portion 111 can be set based on the dimension by which the panel 10 protrudes from the frame C in the mounting state of the erection jig 100 shown in Figure 4. Specifically, if one end E1 of the panel 10 is positioned to protrude from the upper corner C1 of the frame C, and the dimension from the upper corner C1 of the frame C to the tip of the surface material 12 of the panel 10 is about 300 mm, the radius of curvature of the curved portion 111 can be set to approximately 300 mm.

[0049] Furthermore, the first part 110, in addition to the curved portion 111, has a support portion 112 provided on the curved portion 111 and a first support piece 113 fixed to the support portion 112 and positioned on one side of the panel 10, as shown in Figure 3. On the other hand, the second part 120 has a second support piece 121 positioned on the other side of the panel 10 and sandwiching the panel 10 between itself and the first support piece 113. The first part 110 and the second part 120 are mainly made of metal.

[0050] The support portion 112 of the first part 110 includes, for example, a first horizontal plate 112a, a second horizontal plate 112b, a slanted plate 112c, a vertical plate 112d, and an arm 112e.

[0051] The first horizontal plate 112a and the second horizontal plate 112b of the support portion 112 are plate-shaped members that extend laterally along one end E1 of the panel 10, which is the width direction of the panel 10. The first horizontal plate 112a and the second horizontal plate 112b are arranged parallel to each other with a gap between them vertically and are fixed to the inner surface of the curved portion 111 by welding or the like.

[0052] As shown in the top view of Figure 3, the support portion 112 has a plurality of fixing portions 112f that can fix the first support piece 113 in the width direction of the uprighting jig 100. The width direction of the uprighting jig 100 is the left-right direction (lateral direction) as shown in Figure 4, and is the width direction of the panel 10 along one end E1 of the panel 10 that is sandwiched between the first support piece 113 and the second support piece 121.

[0053] The multiple fixing parts 112f are, for example, multiple through holes provided at intervals along the longitudinal direction of the first horizontal plate 112a and the second horizontal plate 112b, which are aligned with the width direction of the erection jig 100, as shown in the top view of Figure 3. The first support piece 113 can be fixed to any fixing part 112f by fasteners such as bolts and nuts. Note that in the front view and left side view of Figure 3, the installation locations of the fasteners attached to each fixing part 112f are indicated by vertical line segments, and the fasteners are not shown in the top view of Figure 3.

[0054] The slanted plate 112c of the support portion 112 is a rectangular plate-shaped member positioned in the center of the first horizontal plate 112a, as shown in the front view of Figure 3. The slanted plate 112c is mounted at an angle to the first horizontal plate 112a, as shown in the left side view of Figure 3. The slanted plate 112c is fixed by welding or the like to the inner surface at the lower end of the curved portion 111 and to the end of the first horizontal plate 112a opposite to the end connected to the curved portion 111.

[0055] As shown in the front view of Figure 3, the vertical plate 112d of the support section 112 is fixed to the center of the longitudinal direction of the first horizontal plate 112a and the second horizontal plate 112b by welding or the like, and is an elongated rectangular plate-like member that extends in a direction intersecting the first horizontal plate 112a and the second horizontal plate 112b. As shown in the front view of Figure 3, the upper end of the vertical plate 112d protrudes above the second horizontal plate 112b.

[0056] The distance between the vertical plate 112d of the support section 112 and the curved section 111 is determined by the dimensions of the first horizontal plate 112a, the second horizontal plate 112b, and the slanted plate 112c. The dimensions of the first horizontal plate 112a, the second horizontal plate 112b, and the slanted plate 112c that determine the distance between the vertical plate 112d and the curved section 111 are set to dimensions that avoid interference between the surface material 12 and the curved section 111 when the erection jig 100 is mounted as shown in Figure 4.

[0057] As shown in the front view and left side view of Figure 3, the arm 112e of the support portion 112 is fixed to the upper end of the vertical plate 112d by welding or the like, and extends in the opposite direction to the second horizontal plate 112b. As shown in the left side view of Figure 3, the arm 112e may have a plate-shaped rib in the shape of a right triangle when viewed from the side between the end fixed to the vertical plate 112d and the upper end of the vertical plate 112d.

[0058] The first support piece 113 of the first part 110 is a generally L-shaped member having a vertical plate 113a and a horizontal plate 113b, as shown in the left side view of Figure 3. The first support piece 113 also has a pair of angles 113c fixed by welding or the like to the surface of the vertical plate 113a facing the curved portion 111.

[0059] As shown in the front view of Figure 3, the vertical plate 113a of the first support piece 113 is an elongated rectangular plate-like member that extends in a direction intersecting the first horizontal plate 112a and the second horizontal plate 112b. The lower end of the vertical plate 113a protrudes downward below the first horizontal plate 112a, and the upper end of the vertical plate 113a protrudes slightly upward above the second horizontal plate 112b.

[0060] As shown in the left side view of Figure 3, the horizontal plate 113b of the first support piece 113 is fixed perpendicularly to the vertical plate 113a by welding or the like to the lower end of the vertical plate 113a and extends in the opposite direction to the curved portion 111. When the erection jig 100 shown in Figure 4 is installed, this horizontal plate 113b of the first support piece 113 is inserted into the ventilation layer between the core material 11 and the surface material 12 of the panel 10 and is positioned on the lower side, which is one side of the panel 10.

[0061] As shown in the left side view of Figure 3, the pair of angles 113c of the first support piece 113 are fixed to the first horizontal plate 112a and the second horizontal plate 112b, facing the upper surface of the first horizontal plate 112a and the lower surface of the second horizontal plate 112b. Each side of the L-shape of the pair of angles 113c adjacent to the first horizontal plate 112a and the second horizontal plate 112b has a through hole for inserting fasteners such as bolts, at a position corresponding to the fixing portion 112f of the first horizontal plate 112a and the second horizontal plate 112b.

[0062] The first support piece 113 is detachably fixed to any fixing portion 112f of the first horizontal plate 112a and the second horizontal plate 112b via a pair of angles 113c. Specifically, the first support piece 113 is fastened to the support portion 112 by screwing a bolt, which is inserted through through holes in the fixing portions 112f provided in the first horizontal plate 112a and the second horizontal plate 112b and through holes provided in the pair of angles 113c of the first support piece 113, into a nut. In this way, the first support piece 113 is detachably fixed to any fixing portion 112f of the first horizontal plate 112a and the second horizontal plate 112b.

[0063] The second support piece 121 of the second part 120 is positioned on the other side of panel 10 opposite to the side of panel 10 where the transverse plate 113b of the first support piece 113 of the first part 110 is positioned, and clamps panel 10 between itself and the transverse plate 113b of the first support piece 113. The second support piece 121 has a shaft portion 121a that engages with the arm 112e of the first part 110, and a jaw portion 121b that clamps one end E1 of panel 10 between itself and the transverse plate 113b of the first support piece 113.

[0064] The shaft portion 121a of the second support piece 121 has a thread on its outer circumference and engages with the support portion 112 of the first portion 110 by being screwed into a threaded hole 112s provided in the arm 112e of the support portion 112. A jaw portion 121b is attached to one end of the shaft portion 121a, and a handle (not shown) is attached to the other end of the shaft portion 121a. The shaft portion 121a may have a rod-shaped handle that is inserted through a through hole in the shaft portion 121a and has retaining elements at both ends, similar to a general clamp.

[0065] The jaw portion 121b of the second support piece 121 is a plate-shaped member attached to the tip of the shaft portion 121a. In the example shown in the top view of Figure 3, the jaw portion 121b has a generally square shape, but the shape of the jaw portion 121b is not particularly limited and may be a circular shape or other shape. The jaw portion 121b may have a protective material such as a rubber sheet bonded to the surface that contacts the panel 10.

[0066] As shown in the top view of Figure 3, the second support piece 121, which constitutes the second part 120, can be rotated in one direction, such as clockwise, when viewed from above, by rotating the shaft portion 121a in a rightward direction, causing the jaw portion 121b to approach the lateral plate 113b of the first support piece 113. This allows the first part 110 and the second support piece 121 to clamp one end E1 of the panel 10, and the lifting jig 100 can be attached to one end E1 of the panel 10.

[0067] Furthermore, as shown in the top view of Figure 3, the second support piece 121, which constitutes the second part 120, can be rotated from above by rotating the shaft portion 121a in a direction opposite to the above-mentioned direction, such as counterclockwise, so that the jaw portion 121b separates from the lateral plate 113b of the first support piece 113. This releases the clamping of the panel 10 between the first part 110 and the second support piece 121, and the lifting jig 100 can be removed from one end E1 of the panel 10.

[0068] As shown in Figure 1, in the panel erection method M of this embodiment, first, step P1 is performed in which an erection jig 100 is attached to one end E1 of the panel 10. Specifically, as shown in Figure 2, the panel 10 is placed on a stand C which is placed on a temporary placement surface G, thereby supporting the panel 10 in a lying position with a gap between it and the temporary placement surface G.

[0069] Furthermore, the method of supporting the panel 10 in a horizontal position with a gap between it and the temporary support surface G is not limited to the method of placing the panel 10 on a support frame C placed on the temporary support surface G. For example, a truck bed may be used instead of a support frame C. Alternatively, the panel 10 may be lifted using a lifting device for loading and unloading the panel 10 from the truck bed and supported in a horizontal position with a gap between it and the temporary support surface G.

[0070] Subsequently, the second support piece 121, which constitutes the second part 120 of the erection jig 100, is rotated counterclockwise by its shaft portion 121a while viewed from above as shown in the top view of Figure 3, thereby sufficiently widening the gap between the jaw portion 121b of the second support piece 121 and the first support piece 113 of the first part 110. Furthermore, depending on the width of the panel 10 and the position of the structure between the core material 11 and the surface material 12, the fixing position of the first support piece 113 to the multiple fixing portions 112f provided on the support portion 112 of the first part 110 is changed if necessary.

[0071] Then, the horizontal plate 113b of the first support piece 113 of the first part 110 is inserted into the ventilation layer between the core material 11 and the surface material 12 of the panel 10 shown in Figure 2, and positioned on the lower side of the core material 11, which is one side of the panel 10. At the same time, the jaw portion 121b of the second support piece 121 of the second part 120 is positioned on the upper side of the core material 11 of the panel 10, which is the other side of the panel 10. Then, with the second support piece 121 of the second part 120 viewed from above as shown in the top view of Figure 3, the shaft portion 121a is rotated clockwise, narrowing the gap between the jaw portion 121b of the second support piece 121 and the first support piece 113 of the first part 110.

[0072] As a result, one end E1 of the panel 10 is sandwiched between the first support piece 113 of the first part 110 and the second support piece 121 of the second part 120, and the uprighting jig 100 is attached to one end E1 of the panel 10, as shown in Figure 4. With this, the attachment of the uprighting jig 100 in step P1 shown in Figure 1 is completed.

[0073] Figures 5A, 5B, and 5C are process diagrams illustrating the process P2 of grounding the erection jig 100 shown in Figure 1 and the process P3 of erecting the panel 10.

[0074] In step P2, where the erection jig 100 is grounded, as shown in Figure 5A, first, the wire W of a lifting device such as a crane is connected to the other end E2 of the panel 10 opposite to the end E1 to which the erection jig 100 is attached. Then, the wire W is wound up by the winch of the lifting device, and the other end E2 of the panel 10 connected to the wire W is lifted on the opposite end E1 to which the erection jig 100 is attached.

[0075] As a result, as shown in Figure 5B, the panel 10 can be rotated using the upper corner C1 of the frame C adjacent to one end E1 of the panel 10 to which the erection jig 100 is attached as a pivot point, thereby increasing the angle of the panel 10 with respect to the horizontal plane. Consequently, the curved portion 111 of the erection jig 100 attached to one end E1 of the panel 10 can be brought into contact with the temporary placement surface G.

[0076] At this time, the weight of the panel 10 acts on the contact point GP of the end of the curved portion 111 with respect to the temporary placement surface G. However, as shown in Figure 3, the support portion 112 of the first part 110 of the erection jig 100 has a slanted plate 112c, which allows the contact point GP of the end of the curved portion 111 to be supported by the slanted plate 112c. As a result, when the curved portion 111 of the erection jig 100 touches the ground, deformation of the curved portion 111 due to the weight of the panel 10 can be suppressed.

[0077] Furthermore, because the curved portion 111 has an outwardly convex curved shape, the angle between the curved portion 111 and the temporary placement surface G when the end of the curved portion 111 contacts the temporary placement surface G can be reduced compared to the case where the curved portion 111 does not have a curved shape. This increases the contact area between the curved portion 111 and the temporary placement surface G, and prevents the curved portion 111 from digging into the temporary placement surface G. With this, the process P2 of placing the erection jig 100 on the ground is completed.

[0078] Subsequently, in step P3 for raising the panel 10, as shown in Figure 5C, one end E1 of the panel 10 is supported from below by the raising jig 100 on the temporary placement surface G, and the other end E2 of the panel 10 is further lifted. Then, the panel 10 is rotated around the contact point GP of the curved portion 111 that is in contact with the temporary placement surface G, thereby raising the panel 10. As a result, the angle of the panel 10 with respect to the horizontal plane gradually increases, and the panel 10 is raised until it is approximately perpendicular to the horizontal plane, that is, until the panel 10 is approximately vertical. With this, step P3 for raising the panel 10 is completed.

[0079] Subsequently, as shown in Figure 1, step P4 is performed to remove the uprighting jig 100 from one end of the panel 10. In this step P4, as described above, the shaft portion 121a of the second support piece 121 constituting the second part 120 shown in the top view of Figure 3 is rotated counterclockwise to release the clamping of the panel 10 between the first support piece 113 of the first part 110 and the second support piece 121 of the second part 120. This makes the uprighting jig 100 removable from one end E1 of the panel 10.

[0080] Subsequently, the panel 10 is further lifted by the wire W of the lifting equipment, causing the erection jig 100 to detach from one end E1 of the panel 10, leaving only the erection jig 100 on the temporary placement surface G. With this, step P4 of removing the erection jig 100 from one end E1 of the panel 10 is completed, and all steps of the panel erection method M shown in Figure 1 are finished. After that, the panel 10 is lifted by the lifting equipment and transported, and attached to the structural frame of the building.

[0081] The following describes the panel erection method M and the operation of the erection jig 100 of this embodiment.

[0082] The panel erection method M of this embodiment is a method for erecting a panel 10 that has been supported in a lying position with a gap between it and the temporary placement surface G, as described above, and as shown in Figure 1, it comprises a step P2 of grounding the erection jig 100 and a step P3 of erecting the panel 10. In step P2, with the erection jig 100 having a curved portion 111 attached to one end E1 of the panel 10, the other end E2 of the panel 10 opposite to the one end E1 is lifted and the curved portion 111 is grounded to the temporary placement surface G. In step P3, with the one end E1 of the panel 10 supported from below by the erection jig 100 on the temporary placement surface G, the other end E2 of the panel 10 is further lifted. This rotates the panel 10 around the grounding point GP of the curved portion 111 that is grounded to the temporary placement surface G, thereby erecting the panel 10.

[0083] According to this panel erection method M, when an erection jig 100 is attached to one end E1 of the panel 10, which is supported lying down with a gap between it and the temporary placement surface G, and the other end E2 of the panel 10 is lifted, the curved portion 111 of the erection jig 100 makes contact with the temporary placement surface G. As a result, one end E1 of the panel 10 is supported from below by the erection jig 100, whose curved portion 111 is in contact with the temporary placement surface G. In this state, when the other end E2 of the panel 10, opposite to the one end E1 to which the erection jig 100 is attached, is further lifted, the panel 10 rotates around the point GP where the curved portion 111 makes contact with the temporary placement surface G, and the panel 10 is erected.

[0084] At this time, as the angle of the panel 10 with respect to the temporary support surface G increases and the panel 10 is raised to become more vertical, the point GP where the curved portion 111 makes contact with the temporary support surface G shifts from the end of the curved portion 111 to the center. This allows the panel 10 to be supported on the temporary support surface G while one end E1 of the panel 10 is protected by the raising jig 100, facilitating the rotation of the panel 10 around the point GP where the curved portion 111 makes contact, and enabling the panel 10 to be raised smoothly. Therefore, according to this embodiment, when the panel 10 is raised by lifting the other end E2 of the panel 10 while one end of the panel 10 is supported on the temporary support surface G, a panel raising method M is provided that can suppress damage to one end of the panel 10.

[0085] Furthermore, the panel erection method M of this embodiment supports the panel 10 in a lying position with a gap between it and the temporary placement surface G, by placing the panel 10 on a frame C that is placed on the temporary placement surface G, as described above.

[0086] According to this panel erection method M, the panel 10 is placed on a frame C which is placed at intervals on the temporary placement surface G, and the panel 10 is supported in a lying position with a gap between it and the temporary placement surface G, and the erection jig 100 can be attached to one end E1 of the panel 10. In this state, the other end of the panel 10 opposite to the end E1 to which the erection jig 100 is attached is lifted. Then, the panel 10 rotates with the upper corner C1 of the frame C adjacent to the end E1 of the panel 10 as the pivot point, and the curved portion 111 of the erection jig 100 can be brought into contact with the temporary placement surface G.

[0087] Furthermore, in the panel erection method M of this embodiment, the erection jig 100 has a first part 110 and a second part 120, as described above. The first part 110 has a curved portion 111. The second part 120 grips one end E1 of the panel 10 between itself and the first part 110 by rotating the shaft portion 121a, which is screwed into the screw hole of the first part 110, in one direction. Then, in the panel erection method M of this embodiment, after the panel 10 has been erected, the shaft portion 121a of the second part 120 is rotated in the opposite direction to the one direction described above. This releases the grip of the panel 10 between the first part 110 and the second part 120, making the erection jig 100 removable. Furthermore, the panel erection method M of this embodiment involves lifting the other end E2 of the erected panel 10, thereby releasing the clamping of the panel 10 between the first part 110 and the second part 120, and removing the erection jig 100 from one end E1 of the panel 10.

[0088] In this panel erection method M, as described above, one end of the panel 10, which is supported in a lying position with a gap between it and the temporary placement surface G, is positioned between the first part 110 and the second part 120 of the panel 10, and the shaft portion 121a of the second part 120 is rotated in one direction. This allows one end of the panel 10 to be clamped between the first part 110 and the second part 120. Also, as described above, with one end E1 of the panel 10 supported from below by the erection jig 100, whose curved portion 111 is in contact with the temporary placement surface G, the panel 10 is erected to be approximately vertical. After that, by manually rotating the shaft portion 121a of the second part 120 in the opposite direction to the one direction described above, the clamping of the panel 10 between the first part 110 and the second part 120 is released. This makes the erection jig 100 detachable from one end E1 of the panel 10. Subsequently, by further lifting the other end E2 of the upright panel 10, the uprighting jig 100 can be removed from one end E1 of the panel 10.

[0089] Furthermore, as described above, the uprighting jig 100 of this embodiment is attached to one end E1 of the panel 10, which is supported in a lying position with a gap between it and the temporary placement surface G. The uprighting jig 100 then supports one end E1 of the panel 10 from below on the temporary placement surface G when the other end E2 of the panel 10, opposite to the one end E1 of the panel 10, is lifted upright. The uprighting jig 100 also has a first portion 110 having a curved portion 111 that contacts the temporary placement surface G when the panel 10 is upright, and a second portion 120 that engages with the first portion 110 and clamps one end E1 of the panel 10 between itself and the first portion 110.

[0090] With this configuration, the erection jig 100 engages the second part 120 with the first part 110 which has a curved portion 111, and can clamp one end E1 of the panel 10, which is supported in a lying position with a gap between it and the temporary placement surface G, between the first part 110 and the second part 120. This allows the erection jig 100 to be attached to one end E1 of the panel 10. In this state, by lifting the other end E2 of the panel 10 opposite to the end to which the erection jig 100 is attached, the curved portion 111 of the first part 110 makes contact with the temporary placement surface G.

[0091] As a result, one end E1 of the panel 10 is supported from below by an uprighting jig 100 having a first portion 110 in which the curved portion 111 is in contact with the temporary placement surface G, and a second portion 120 engaged with the first portion 110. In this state, when the other end E2 of the panel 10, opposite to the end to which the uprighting jig 100 is attached, is further lifted, the panel 10 rotates around the point GP where the curved portion 111 is in contact with the temporary placement surface G, thereby raising the panel 10 upright. Therefore, according to this embodiment, when raising the panel 10 by lifting the other end E2 of the panel 10 while one end E1 of the panel 10 is supported on the temporary placement surface G, an uprighting jig 100 is provided that can suppress damage to one end E1 of the panel 10.

[0092] Furthermore, in the erection jig 100 of this embodiment, the curved portion 111 has a curved shape that is convex toward the outside.

[0093] With this configuration, when the curved portion 111 of the first section 110 is brought to the ground and the other end E2 opposite to the one end E1 of the panel 10 to which the uprighting jig 100 is attached is further lifted, the angle of the panel 10 with respect to the temporary placement surface G increases, and the panel 10 is raised upright and approaches vertical. At this time, the contact point GP of the curved portion 111 with respect to the temporary placement surface G smoothly transitions from the end of the curved portion 111, which has a curved shape that is convex outward, to the central part. As a result, the panel 10 is supported on the temporary placement surface G with one end E1 protected by the uprighting jig, and the rotation of the panel 10 around the contact point GP of the curved portion 111 is facilitated, allowing the panel 10 to be raised upright smoothly.

[0094] Furthermore, in the erection jig 100 of this embodiment, the first part 110 has a support part 112 provided on the curved part 111 and a first support piece 113 fixed to the support part 112 and positioned on one side of the panel 10. The second part 120 has a second support piece 121 positioned on the other side of the panel 10 and sandwiching the panel 10 between itself and the first support piece 113.

[0095] This configuration allows the support portion 112 to support the curved portion 111, thereby suppressing deformation of the curved portion 111 due to the weight of the panel 10 when the support portion 112 is in contact with the ground or when the panel 10 is erected. Furthermore, the support portion 112 supports the first support piece 113, allowing one end E1 of the panel 10 to be sandwiched between the first support piece 113, which is positioned on one side of the panel 10, and the second support piece 121, which is positioned on the other side of the panel 10.

[0096] Furthermore, in the uprighting jig 100 of this embodiment, the second support piece 121 of the second part 120 has a shaft portion 121a that is screwed into the screw hole 112s of the support portion 112 of the first part 110, and a jaw portion 121b attached to the tip of the shaft portion 121a. The uprighting jig 100 grips one end E1 of the panel 10 between the jaw portion 121b of the second support piece 121 and the first support piece 113 of the first part 110 by rotating the shaft portion 121a of the second support piece 121 in one direction.

[0097] With this configuration, the lifting jig 100 can be manually attached to and removed from one end E1 of the panel 10. Specifically, to attach the lifting jig 100 to one end E1 of the panel 10, first, one end E1 of the panel 10 is positioned between the first support piece 113 of the first part 110 and the jaw portion 121b of the second support piece 121 of the second part 120. Next, the shaft portion 121a of the second support piece 121 is manually rotated in one direction around the axis. As a result, one end E1 of the panel 10 is clamped between the first support piece 113 and the jaw portion 121b of the second support piece 121, and the lifting jig 100 is attached to one end E1 of the panel 10.

[0098] Furthermore, in order to remove the lifting jig 100 from one end E1 of the upright panel 10, first, the shaft portion 121a of the second support piece 121 is manually rotated in the opposite direction to the aforementioned one direction. This releases the clamping of the panel 10 between the first support piece 113 and the jaw portion 121b of the second support piece 121, making the lifting jig 100 removable from one end E1 of the panel 10. Next, by further lifting the other end E2 of the upright panel 10, the lifting jig 100 can be removed from one end E1 of the panel 10.

[0099] Furthermore, in the erection jig 100 of this embodiment, the support portion 112 has a plurality of fixing portions 112f that can fix the first support portion 113 in the width direction along one end E1 of the panel 10 sandwiched between the first support portion 113 and the second support portion 121.

[0100] This configuration makes it possible to attach the erection jig 100 to individual panels 10 that differ in width and structure. Specifically, the first support piece 113 can be fixed to one of the multiple fixing pieces 112f provided on the support piece 112 of the first part 110, which is positioned appropriately according to the width and structure of each individual panel 10. Therefore, one end E1 of each individual panel 10 that differs in width and structure can be clamped between one or more first support pieces 113 of the first part 110 fixed in appropriate positions and the second support piece 121 of the second part 120, and the erection jig 100 can be attached to one end of the panel 10.

[0101] As described above, according to this embodiment, when the other end E2 of the panel 10 is lifted while one end E1 of the panel 10 is supported on the temporary placement surface G, a panel erection method M and erection jig 100 can be provided that can suppress damage to one end E1 of the panel 10.

[0102] [Embodiment 2] Hereinafter, with reference to Figures 1, 2, 4, and 5A to 5C, and with reference to Figures 6 to 10, Embodiment 2 of the panel erection method and erection jig according to this disclosure will be described.

[0103] Figure 6 is a perspective view of the erection jig 100A of this embodiment. Figure 7 is an exploded perspective view of the erection jig 100A shown in Figure 6. Figure 8 is a cross-sectional view of the erection jig 100A along the line VIII-VIII shown in Figure 6. Figure 9 is a cross-sectional view of the erection jig 100A shown in Figure 8 after the movable member 122 included in the second part 120A has moved in the direction of arrow A1. Figure 10 is a cross-sectional view of the second support piece 121A of the second part 120A shown in Figure 9 after it has moved in the direction of arrow A2.

[0104] The erecting jig 100A of this embodiment differs from the erecting jig 100 of the previously described embodiment in the configuration of part of the first part 110A and part of the configuration of part of the second part 120A. Therefore, in the erecting jig 100A of this embodiment, the same reference numerals are used for parts that are the same as those of the erecting jig 100 of the previously described embodiment, and their description is omitted. Note that the up and down, left and right, and vertical and horizontal directions in the description of the erecting jig 100A in Figures 6 to 8 refer to the up and down, left and right, and vertical and horizontal directions in the mounted state in which the erecting jig 100A is attached to the panel 10 which is supported in a lying position with a gap between it and the temporary placement surface G.

[0105] As shown in Figures 6 and 7, in the erection jig 100A of this embodiment, the support portion 112A of the first portion 110A has an angle 112g that engages with the second support piece 121A of the second portion 120A, instead of the arm 112e shown in Figure 3. The angle 112g is joined and fixed to the upper surface of the second horizontal plate 112b of the support portion 112A by welding or the like at the central part of the second horizontal plate 112b.

[0106] As shown in Figure 7, angle 112g has an elongated hole 112h in the rising portion, which is one side of the L-shape that runs vertically, with the vertical direction as its longitudinal direction. The second horizontal plate 112b also has an elongated hole 112i between the rising portion and the curved portion 111 of angle 112g. The elongated hole 112i of the second horizontal plate 112b extends along the short direction of the second horizontal plate 112b in a direction that intersects with the curved portion 111. The fixing portion, which is one side of the L-shape of angle 112g fixed to the upper surface of the second horizontal plate 112b, has a notch that exposes the elongated hole 112i of the second horizontal plate 112b.

[0107] Furthermore, as shown in Figure 7, the support portion 112A is joined to the upper surface of the first horizontal plate 112a by welding or the like at the lower end of the vertical plate 112d, and to the lower surface of the second horizontal plate 112b by welding or the like at the upper end of the vertical plate 112d. The first horizontal plate 112a has an elongated hole 112i in the longitudinal center where the lower end of the vertical plate 112d is joined, similar to the second horizontal plate 112b. The upper end of the vertical plate 112d has a through hole 112j through which the pin 122p of the movable member 122, which will be described later, is inserted.

[0108] The second support piece 121A of the second part 120A further includes an arm 121c and two angles 121d, in addition to the shaft portion 121a and the jaw portion 121b. One end of the arm 121c has a screw hole 121f (see Figure 8), similar to the arm 112e of the support portion 112 shown in Figure 3. By screwing a screw provided on the outer surface of the shaft portion 121a into the screw hole 121f of the arm 121c, the shaft portion 121a is supported by the arm 121c, and the jaw portion 121b attached to the tip of the shaft portion 121a faces the transverse plate 113b of the first support piece 113.

[0109] The two angles 121d of the second support piece 121A are joined and fixed to the upper and lower surfaces of the arm 121c by welding or the like, at the ends opposite to the end of the arm 121c that has a screw hole 121f for screwing in the shaft portion 121a. The angle 121d attached to the upper surface of the arm 121c has a through hole through which a bolt B is inserted for engaging the second support piece 121A with the support portion 112A of the first portion 110. The angle 121d attached to the lower surface of the arm 121c has a through hole 121e for engaging the pin 122p of the movable member 122, which will be described later.

[0110] As shown in Figure 8, the movable member 122 is a member to which a pin 122p is fixed, extending in an axial direction intersecting the curved portion 111 and inserted through a through hole 121e of the second support piece 121A, with the second portion 120A engaged with the first portion 110A. The movable member 122 receives the weight of the panel 10 from one end E1 of the panel 10 when it is raised, as shown in Figures 5B and 5C. By receiving the weight of the panel 10, the movable member 122 moves in the axial direction of the pin 122p indicated by arrow A1 in Figure 8, and is movably supported by the support portion 112A of the first portion 110A so that the pin 122p can exit through the through hole 121e of the second support piece 121A.

[0111] The movable member 122 includes, for example, a back plate 122a, a pair of channel steels 122b, and a pair of angles 122c, as shown in Figure 7. The back plate 122a of the movable member 122 has, for example, a notch at its upper end. This prevents interference between the upper end of the back plate 122a of the movable member 122 and the angle 121d of the second support piece 121A, as shown in Figure 8, when the second support piece 121 of the second part 120A and the movable member 122 are engaged with the support piece 112A of the first part 110A.

[0112] The pair of channel steels 122b of the movable member 122 are arranged, for example, with their bottom walls facing each other with their longitudinal direction as the vertical direction, and their side walls facing both sides of the front surface of the back plate 122a that faces the curved portion 111. The pair of channel steels 122b are fixed to the front surface of the back plate 122a by joining the side walls facing the front surface of the back plate 122a to the front surface of the back plate 122a by welding or the like.

[0113] As shown in Figure 8, the pair of angles 122c of the movable member 122 are positioned between the curved portion 111 of the first portion 110A and the vertical plate 112d of the support portion 112A. As shown in Figure 7, the pair of angles 122c are positioned vertically with a gap between them, with the horizontal direction being the longitudinal direction. One side of the lower angle 122c is facing the upper surface of the first horizontal plate 112a, and the other side of the L is facing the lower end of the side wall of the pair of channel steels 122b opposite to the back plate 122a. One side of the upper angle 122c is facing the lower surface of the second horizontal plate 112b, and the other side of the L is facing the upper end of the side wall of the pair of channel steels 122b opposite to the back plate 122a.

[0114] As shown in Figure 7, each angle 122c has through holes at both longitudinal ends facing the side walls of the pair of channel steels 122b through which bolts B are inserted. The pair of channel steels 122b also have through holes corresponding to the through holes of the pair of angles 122c through which bolts B are inserted. The pair of angles 122c and the pair of channel steels 122b are connected and fixed to each other by screwing the bolts B inserted through their respective through holes into nuts N.

[0115] The pin 122p of the movable member 122 is fixed, for example, to the upper angle 122c of the movable member 122. As shown in Figure 7, the upper angle 122c of the movable member 122 has a through hole 122d in the center of the longitudinal direction (lateral direction) through which the pin 122p is inserted. Also, as shown in Figure 8, the upper angle 122c of the movable member 122 has a nut N fixed around the opening on the curved portion 111 side of the through hole 122d. The nut N is joined and fixed to the angle 122c by welding or the like.

[0116] As shown in Figure 8, the pin 122p of the movable member 122 has a thread at its end on the curved portion 111 side and is screwed into a nut N fixed to the upper angle 122c of the movable member 122, thereby fixing it to the upper angle 122c of the movable member 122. By inserting the pin 122p of the movable member 122 into the through hole 121e provided in the angle 121d of the second support piece 121A, the vertical movement of the second support piece 121A is restricted.

[0117] Furthermore, the pin 122p of the movable member 122 is, for example, a tapered pin in which the diameter of the tip end is smaller than the diameter of the through hole 121e provided in the angle 121d of the second support piece 121A, and the diameter of the threaded portion is larger than the through hole 121e. In this case, the second support piece 121A and the movable member 122 can be engaged by engaging the outer circumferential surface of the pin 122p with the inner circumferential surface of the through hole 121e.

[0118] Furthermore, as shown in Figure 7, the upper angle 122c of the movable member 122 has a through hole 122e in the center of its longitudinal direction, on one side of the L-shape facing the lower surface of the second horizontal plate 112b of the support part 112A, through which a bolt B is inserted. Similarly, the lower angle 122c of the movable member 122 also has a through hole 122e in the center of its longitudinal direction, on one side of the L-shape facing the upper surface of the first horizontal plate 112a of the support part 112A, through which a bolt B is inserted.

[0119] As shown in Figure 8, in order to engage the second portion 120A with the first portion 110A, first the movable member 122 is engaged with the first portion 110A, so that the first portion 110A supports the movable member 122 so that it can move toward the curved portion 111. Then the second support piece 121A is engaged with the first portion 110A, so that the first portion 110A supports the second support piece 121A so that it can move toward the upward.

[0120] To engage the movable member 122 with the first part 110A, first, the pin 122p fixed to the upper angle 122c of the movable member 122 is inserted through the through hole 112j provided in the vertical plate 112d of the first part 110A from the curved portion 111 side of the vertical plate 112d. Next, the bolt B, which is inserted through the elongated hole 112i provided in the second horizontal plate 112b of the support portion 112A of the first part 110A and the through hole 122e provided in the upper angle 122c of the movable member 122, is screwed into the nut N, but not fully tightened, leaving some play.

[0121] Similarly, bolts B are inserted through the elongated hole 112i in the first horizontal plate 112a of the support portion 112A of the first portion 110A and the through hole 122e in the lower angle 122c of the movable member 122, and then screwed into nuts N, but not fully tightened, leaving some play. As a result, the movable member 122 engages with the support portion 112A of the first portion 110A and is supported by the first portion 110A so that it can move toward the curved portion 111, as shown by arrow A1 in Figure 8.

[0122] Furthermore, in order to engage the second support piece 121A with the first part 110A, first, the pin 122p of the movable member 122 is inserted through the through hole 121e provided in the lower angle 121d of the second support piece 121A. As a result, as shown in Figure 8, the second support piece 121A is engaged with the first part 110A via the pin 122p inserted through the through hole 112j provided in the vertical plate 112d of the support portion 112A of the first part 110A.

[0123] Furthermore, bolt B is inserted through the elongated hole 112h provided in the angle 112g of the support portion 112A and the through hole provided in the upper angle 121d of the second support piece 121A, and then screwed into the nut N, but not fully fastened, leaving some play. As a result, the second support piece 121A is supported by the first portion 110A so that it can move upward along the elongated hole 112h provided in the angle 112g of the support portion 112A of the first portion 110A.

[0124] More specifically, as shown in Figure 9, when the movable member 122 moves toward the curved portion 111, the pin 122p fixed to the movable member 122 disengages from the through hole 121e provided in the lower angle 121d of the second support piece 121A. This releases the engagement between the lower angle 121d of the second support piece 121A and the vertical plate 112d of the support portion 112A of the first portion 110A.

[0125] In this state, as described above, the bolt B inserted through the elongated hole 112h provided in the angle 112g of the support portion 112A of the first portion 110A is inserted through the through hole provided in the upper angle 121d of the second support piece 121A, and the nut N is loosely screwed on with some play. As a result, the second support piece 121A is supported by the support portion 112A of the first portion 110A via the bolt B and nut N, so that it can move upward as indicated by arrow A2 in Figure 9 without falling off the support portion 112A of the first portion 110A.

[0126] Furthermore, the panel erection method of this embodiment differs from the panel erection method M of the previously described embodiment in that, in step P3 of erecting the panel 10 shown in Figure 1, the erection jig 100A is automatically made removable from one end E1 of the panel 10.

[0127] The panel erection method of this embodiment is the same as the panel erection method M described above, in step P3 shown in Figures 5B to 5C, the panel 10 is rotated around the contact point GP of the curved portion 111 of the erection jig 100A to erect the panel 10.

[0128] During this process, the weight of panel 10 acts on the back plate 122a of the movable member 122 shown in Figure 8 from one end E1 of panel 10, causing the movable member 122 to move toward the curved portion 111, as indicated by arrow A1 in Figure 8. As a result, as shown in Figure 9, the pin 122p fixed to the movable member 122 disengages from the through hole 121e provided in the angle 121d on the lower side of the second support piece 121A. This releases the engagement of the angle 121d located on the lower side of the second support piece 121A with the vertical plate 112d of the support portion 112A of the first portion 110A.

[0129] In this state, as described above, the bolt B inserted through the elongated hole 112h provided in the angle 112g of the support portion 112A of the first portion 110A is inserted through the through hole provided in the upper angle 121d of the second support piece 121A, and the nut N is loosely screwed on with some play. As a result, the second support piece 121A is supported by the support portion 112A of the first portion 110A via the bolt B and nut N so that it can move upward as shown by arrow A2 in Figure 9 without falling off the support portion 112A of the first portion 110A. In this way, the engagement between the first portion 110A and the second portion 120A can be automatically released by the weight of the panel 10 acting on the movable member 122.

[0130] As a result, the reaction force acting on the second support piece 121A of the second part 120A, which was clamping and tightening one end E1 of the panel 10 between itself and the first support piece 113 of the first part 110A, causes the second support piece 121A to move away from the first support piece 113, as indicated by arrow A1 in Figure 9. Consequently, as shown in Figure 10, the gap between the horizontal plate 113b of the first support piece 113 of the first part 110A and the jaw portion 121b of the second support piece 121A of the second part 120A expands beyond the thickness of the core material 11 of the panel 10 that was clamped between them. As a result, the erection jig 100A becomes removable from one end E1 of the panel 10.

[0131] Subsequently, in step P4, similar to the panel erection method M shown in Figure 1, the erected panel 10 is lifted, thereby releasing the engagement between the first part 110A and the second part 120A, and removing the erection jig 100A from one end E1 of the panel 10.

[0132] As described above, the panel erection method of this embodiment has the following features. In the panel erection method of this embodiment, the erection jig 100A has a first part 110A having a curved portion 111, and a second part 120A that engages with the first part 110A and clamps one end E1 of the panel 10 between itself and the first part 110A. Furthermore, in the panel erection method of this embodiment, the panel 10 is erected by rotating the panel 10 around the contact point GP of the curved portion 111. During this process, the weight of the panel 10 releases the engagement between the first part 110A and the second part 120A of the erection jig 100A, making the erection jig 100A removable. Subsequently, by lifting the other end E2 of the upright panel 10, the uprighting jig 100A, whose engagement with the first part 110A and the second part 120A has been released, is removed from one end E1 of the panel 10.

[0133] In this panel erection method, as described above, with one end E1 of the panel 10 supported on the temporary placement surface G via the erection jig 100A, the other end E2 opposite to the end E1 is lifted and the panel 10 is erected. As a result, the direction of the panel 10's own weight acting on the erection jig 100A changes. Consequently, the engagement between the first part 110A and the second part 120A of the erection jig 100A is released by the weight of the panel 10, and the clamping of the panel 10 between the first part 110A and the second part 120A is released. This makes the erection jig 100A automatically detachable from one end E1 of the panel 10 during the process of erecting the panel 10. Subsequently, by further lifting the other end E2 of the erected panel 10, the erection jig 100A can be removed from one end of the panel 10. Therefore, the need for workers to remove the erection jig 100A from the lower end of the erected panel 10 is eliminated, improving work efficiency and safety during the installation of the panel 10.

[0134] Furthermore, in the erecting jig 100A of this embodiment, the second portion 120A further includes a movable member 122 to which a pin 122p is fixed. With the second portion 120A engaged with the first portion 110A, the pin 122p extends in an axial direction intersecting the curved portion 111 and is inserted through the through hole 121e of the second support piece 121A. The movable member 122 is supported by the support portion 112A so as to move in the axial direction of the pin 122p by receiving the weight of the panel 10 from one end E1 of the panel 10 being erected, so that the pin 122p can exit through the through hole 121e of the second support piece 121A.

[0135] In this configuration, when the panel 10, to which the uprighting jig 100A is attached at one end E1, is lifted by the other end E2 opposite to the one end E1 and raised upright, one end E1 of the panel 10 is supported on the temporary placement surface G via the uprighting jig 100A. In this state, as the panel 10 is raised further upright, the direction of the panel 10's own weight acting on the uprighting jig 100A changes. Then, the panel 10's own weight begins to act from one end E1 on the movable member 122 of the second part 120A in a direction intersecting the curved portion 111 of the first part 110A. As a result, the movable member 122 moves in the axial direction of the pin 122p that intersects the curved portion 111 of the first part 110A, and the pin 122p, which was inserted through the through hole 121e of the second support piece 121A, comes out of the through hole 122e of the second support piece 121A.

[0136] As a result, the second support piece 121A moves in the thickness direction of the panel 10 perpendicular to the axial direction of the pin 122p, and the clamping of the panel 10 between the first support piece 113 and the second support piece 121A is released. This allows the erection jig 100A to be automatically detached from one end E1 of the panel 10 by the weight of the panel 10. Subsequently, the erection jig 100A can be removed from one end E1 of the panel 10 by further lifting the other end E2 of the erected panel 10. Therefore, the work of removing the erection jig 100A from the lower end of the erected panel 10 is eliminated, improving the work efficiency and safety during the installation of the panel 10.

[0137] Furthermore, in the erection jig 100A of this embodiment, the second support piece 121A is supported by the support portion 112A so as to be movable in a direction that intersects the axial direction of the pin 122p and moves away from the first support piece 113.

[0138] With this configuration, when the pin 122p of the movable member 122 is dislodged from the through hole 122e of the second support piece 121A, the second support piece 121A, which is supported by the support portion 112A of the first part 110A, moves in a direction away from the first support piece 113, intersecting the axial direction of the pin 122p. As a result, the distance between the first support piece 113 and the second support piece 121A is expanded, and the clamping of the panel 10 between the first support piece 113 and the second support piece 121A is released. In addition, when the pin 122p of the movable member 122 is dislodged from the through hole 121e of the second support piece 121A, the second support piece 121A is supported by the support portion 112A of the first part 110A, preventing the second support piece 121A from falling off the lifting jig 100A.

[0139] Specifically, in the erection jig 100A of this embodiment, the support portion 112A has an angle 112g with an elongated hole 112h, the elongated hole 112h extending in a direction away from the first support piece 113, intersecting the axial direction of the pin 122p. The second support piece 121A has an angle 121d that is supported by the angle 112g of the support portion 112A, the angle 121d having a through hole. The second support piece 121A is supported by the support portion 112A by inserting a bolt through the elongated hole 112h provided in the angle 112g of the support portion 112A, inserting the bolt through the through hole in the angle 121d, and loosely screwing it into the nut N with some play.

[0140] With this configuration, as described above, the second support piece 121A can be supported by the support portion 112A so that it can move in a direction away from the first support piece 113, intersecting the axial direction of the pin 122p. Furthermore, by inserting the bolt B, which is inserted through the elongated hole 112h of the angle 112g of the support portion 112A, through the through hole of the angle 121d of the second support piece 121A and screwing it onto the nut N, the second support piece 121A is prevented from falling off the support portion 112A.

[0141] As described above, according to this embodiment, when the other end E2 of the panel 10 is lifted upright while one end E1 of the panel 10 is supported on the temporary placement surface G, a panel erection method and erection jig 100A can be provided that can suppress damage to one end E1 of the panel 10.

[0142] Preferred embodiments of the present invention have been described above. However, the present invention is not limited to the embodiments described above. Various modifications, substitutions, etc., can be applied to the embodiments described above without departing from the scope of the present invention. Furthermore, each of the features described with reference to the embodiments described above may be combined as appropriate, as long as they do not contradict the technical invention. [Explanation of Symbols]

[0143] 10 panels 100 Standing jig 100A Elevating jig 110 Part 1 110A 1st part 111 Curved section 112 Support part 112A Support part 112f Fixed part 112s threaded hole 113 1st support piece 120 Part 2 120A 2nd part 121 Second support piece 121A 2nd support piece 121e Through hole 122 Movable member 122p pin C mount E1 one end E2 Other end G Temporary placement surface GP ground contact point How to erect the M panel

Claims

1. A method for erecting a panel that has been supported while lying down with a gap between it and the temporary placement surface, With a lifting jig having a curved portion attached to one end of the panel, the other end of the panel opposite to the one end is lifted and the curved portion is brought into contact with the temporary placement surface. The method is characterized by supporting one end of the panel from below with the erection jig on the temporary placement surface, further lifting the other end of the panel, and rotating the panel around the point where the curved portion is in contact with the temporary placement surface to erect the panel. How to erect the panels.

2. The panel is supported in a lying position with a gap between it and the temporary placement surface by placing the panel on a support stand placed on the temporary placement surface. A method for erecting a panel as described in claim 1.

3. The erection jig has a first portion having the curved portion and a second portion that engages with the first portion and clamps one end of the panel between itself and the first portion. By rotating the panel around the contact point of the curved portion and raising the panel upright, the weight of the panel disengages the engagement between the first and second parts of the uprighting jig, making the uprighting jig removable. The method is characterized by lifting the other end of the upright panel, thereby releasing the engagement between the first and second parts of the uprighting jig and removing it from the one end of the panel. A method for erecting a panel as described in claim 1.

4. The erection jig has a first part having the curved portion and a second part that clamps one end of the panel between itself and the first part by rotating a shaft portion screwed into a screw hole in the first part in one direction. After the panel is erected, the shaft portion of the second part is rotated in the opposite direction to the one direction, thereby releasing the clamping of the panel between the first part and the second part and making the erection jig removable. The method is characterized by lifting the other end of the upright panel, thereby releasing the clamping of the panel between the first and second parts, and removing the uprighting jig from one end of the panel. A method for erecting a panel as described in claim 1.

5. An erection jig that is attached to one end of a panel that is supported lying down with a gap between it and a temporary support surface, and which supports the one end of the panel from below on the temporary support surface when the other end of the panel opposite to the one end is lifted upright, The panel has a first portion which has a curved portion that comes into contact with the temporary placement surface when the panel is raised, It is characterized by having a second portion that engages with the first portion and sandwiches one end of the panel between itself and the first portion, A jig for raising and lowering objects.

6. The aforementioned curved portion is characterized by having a curved shape that is convex toward the outside. The erection jig according to claim 5.

7. The first portion comprises a support portion provided on the curved portion and a first support piece fixed to the support portion and positioned on one side of the panel, The second portion is characterized by having a second support piece positioned on the other side of the panel and sandwiching the panel between itself and the first support piece. The erection jig according to claim 5.

8. The second portion further includes a movable member to which a pin is fixed, which extends in an axial direction intersecting the curved portion while engaged with the first portion and is inserted through a through hole in the second support piece. The movable member is supported by the support portion so as to move in the axial direction by receiving the weight of the panel from one end of the panel that is raised upright, so that the pin can exit the through hole of the second support piece. The erection jig according to claim 7.

9. The second support piece is characterized in that it is supported by the support portion so as to be movable in a direction that intersects the axial direction and moves away from the first support piece. The erection jig according to claim 8.

10. The second support piece has a shaft portion that is screwed into the screw hole of the support portion and a jaw portion attached to the tip of the shaft portion, and is characterized in that by rotating the shaft portion in one direction, one end of the panel is clamped between the jaw portion and the first support piece. The erection jig according to claim 7.

11. The support portion is characterized by having a plurality of fixing portions capable of fixing the first support piece in the width direction along one end of the panel sandwiched between the first support piece and the second support piece. The erection jig according to claim 7.

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