Starter Jig

Abstract

To provide a starter jig capable of easily, quickly and with minimum effort setting a long folded-plate roof material, which is fed out while being formed by a roll forming machine at a construction site of a folded-plate roof, at a predetermined position. [Configuration] The device comprises an elongated base 1, a roll body 2 attached to the upper surface of the base 1, and a magnet body 3 attached to the underside of the base 1. The base 1 is configured such that guide side portions 12, 12 are provided facing downward at both ends in the width direction of the base main plate portion 11, and the axial direction of the roll body 2 coincides with the longitudinal direction of the base 1. The magnet body 3 is configured so that it can be magnetized from above and attached to the legs 82 of multiple metal receivers 8 provided at equal intervals on a structural material 9.

Description

[Technical Field]

[0001] The present invention relates to a starter jig that can be installed on a specified receiving fixture at a construction site for a long folded-plate type roof, allowing long folded-plate roofing materials to be easily and quickly placed between the specified receiving fixtures to construct a folded-plate roof, and is particularly suitable for constructing folded-plate roofing materials that are first formed and sent out from a roll forming machine. [Background technology]

[0002] Conventionally, folded-plate roofs have been constructed by arranging multiple metal folded-plate roofing materials side by side. In particular, in large buildings, the total roof area is extremely large. In such large roofs, the folded-plate roofing materials that make up the roof are also extremely long, with the longitudinal length of the folded plates sometimes reaching approximately 50 to 100 meters or more. A roll-forming machine for the folded-plate roofing material is then brought to the construction site, and a thin metal sheet wound into a coil is extruded from the roll-forming machine into a fixed shape to form a long folded-plate roofing material.

[0003] In addition to the above, at the construction site of a large-area folded-plate metal roof, a platform is first constructed near the location of the roof construction of the building structure under construction, and a roll forming machine for forming long folded-plate roofing material is installed on the platform. This roll forming machine forms and feeds out long folded-plate roofing material from the metal roll raw material, and workers are assigned at appropriate intervals along the length (length) of this folded-plate roofing material. The workers transport the folded-plate roofing material to a predetermined position on a structural member such as a steel beam where a receiving device is installed, and place the folded-plate roofing material in the predetermined position.

[0004] The first piece of folded-plate roofing material is molded and sent out using a roll-molding machine, and once this folded-plate roofing material has been installed in its designated position, the next new folded-plate roofing material is molded and sent out using the roll-molding machine, and the existing folded-plate roofing material that has already been installed is also placed next to it in the width direction, and adjacent folded-plate roofing materials are connected by clamping.This process is repeated many times to construct the folded-plate roof.

[0005] At a roof construction site, the first piece of folded-plate roofing material is formed and sent out by a roll forming machine between adjacent supports b, b, perpendicular to the structural members on which supports are installed. The first piece of folded-plate roofing material plays an important role as a foothold for workers to move between structural members (beams) during subsequent work. However, the first piece of folded-plate roofing material a is transported using a simple roller jig c as shown in Figure 9, and there are no rollers to hold it in the width direction. As the folded-plate roofing material a is formed and pushed out by the roll forming machine, it may shift or wobble during the process, failing to reach its designated position and falling off the jig, posing a serious risk to workers.

[0006] In the process of feeding the folded-plate roofing material having the above-mentioned fitting bends between predetermined receiving fixtures installed on structural members such as steel beams using a roll forming machine, a conveying device equipped with guide rollers is often used to smoothly transport and move the fed folded-plate roofing material between the receiving fixtures. Various conveying devices of this type have been developed in the past. Here, we will look at Patent Documents 1 to 3 as representative examples of conveying devices. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-8569 Summary of the Invention [Problem to be solved by the invention]

[0008] The device disclosed in the above patent document corresponds to a roll forming machine installed on a gantry. In other words, the roll forming machine is installed on a gantry at approximately the same height as the roof installation location of the building, and receives the corrugated roofing material extruded and formed from the roll forming machine as it is and transports it to a predetermined position. As mentioned above, the risk of the corrugated roofing material being formed and sent out from the roll forming machine deviating from the predetermined transport course and falling off the jig can be avoided by the inclined rollers disclosed in Patent Document 1 that press both sides of the corrugated roofing material in the width direction.

[0009] However, the jig device disclosed in Patent Document 1 was extremely complex in structure and heavy. Furthermore, conventional devices such as those described in Patent Document 1 were extremely cumbersome to install and remove from steel frames such as beams onto which the folded-plate roofing material was to be installed and from the support fixtures for the folded-plate roofing material installed on the steel frames, requiring a long time and skill for workers to master the use of the device. In particular, the device described in Patent Document 1 took a long time to remove from its initial installation position. Therefore, an object of the present invention is to provide a starter jig that can easily, quickly, and with minimal effort install long folded-plate roofing materials in their designated positions after they have been formed and fed out by a roll forming machine at a folded-plate roofing construction site. [Means for solving the problem]

[0010] Therefore, the inventors conducted extensive research to solve the above-mentioned problems, and as a result, they have come up with the invention of claim 1, which is a starter jig comprising an elongated base, a roll body attached to the upper surface of the base, and a magnet body attached to the underside of the base, wherein the base has guide side portions extending downward at both widthwise ends of the main plate portion of the base, the axial direction of the roll body is configured to coincide with the longitudinal direction of the base, and the magnet body is configured so that it can be magnetized and attached from above to the legs of a plurality of metal holders provided at equal intervals on a structural material, thereby solving the above-mentioned problems.

[0011] The above problem is solved by the invention of claim 2, which is the starter jig according to claim 1, characterized in that the width portions of the legs can be inserted loosely between the guide side portions and the thickness of the magnet body is smaller than the height of both guide side portions.The above problem is solved by the invention of claim 3, which is the starter jig according to claim 1 or 2, characterized in that the roll body 2 is configured by two roll portions having different axial lengths arranged in series.The above problem is solved by the invention of claim 4, which is the starter jig according to claim 3, characterized in that the upper side of the two roll bodies is axially shorter and the lower side is axially longer, and the roll portion of the upper roll body is made of a soft material.

[0012] The above problem is solved by the invention of claim 5, which is the starter jig according to claim 1 or 2, characterized in that the roll body is made of a single roll portion. The above problem is solved by the invention of claim 6, which is the starter jig according to claim 1 or 2, characterized in that a gripping portion is provided on the base. [Effects of the Invention]

[0013] In the invention of claim 1, by using the starter jig of the present invention in the construction of a folded-plate roof, the first folded-plate roof material being extruded while being molded from the roll molding machine can be transported extremely easily and smoothly to the designated installation position at the roof construction site, and the first folded-plate roof material being transported can be transported in an extremely stable and safe state without deviating from the designated course or falling off.

[0014] To explain the above effect in more detail, the starter jig of the present invention has a magnet 3 on the underside of the base 1, and the magnetic force of the magnet allows the starter jig to be easily magnetized and attached to the legs of the holder. Holders are generally trapezoidal, with inclined legs. Therefore, the opposing legs of adjacent holders often form a roughly inverted V shape. Therefore, by attaching the starter jig of the present invention to both opposing legs, the two roll bodies attached to the starter jig are also arranged in a roughly inverted V shape.

[0015] The starter jigs attached to the opposing legs of adjacent receiving devices are arranged at a predetermined interval in the longitudinal direction and in the conveying direction of the first folded-plate roofing material formed by the roll forming machine, so that the folded-plate roofing material extruded while being formed by the roll forming machine is held on both sides in the width direction by the roll bodies of both starter jigs. Furthermore, since the starter jig of the present invention is attached to the legs of the receiving device by magnetization with a magnet body, the starter jig can be easily removed from the legs of the receiving device by hand.

[0016] In the invention of claim 2, the width portion of the leg can be inserted freely between the guide side portions, and the thickness dimension of the magnet body is formed to be smaller than the height of both guide side portions, so that both guide side portions can hold the leg of the receiving tool in a clamped state, and it is possible to prevent the starter jig from shifting or coming off the leg of the receiving tool when transporting the folded-plate roofing material. In the invention of claim 3, the roll body is configured so that two roll portions with different axial lengths are arranged in series, which further improves the contact state between the roll body of each starter jig and the folded-plate roofing material.

[0017] In the invention of claim 4, the two roll bodies have an upper side that is short in the axial direction and a lower side that is long in the axial direction, and the roll portion of the upper roll body is made of a soft material, making it possible to prevent the roll portion from damaging the folded-plate roofing material when it is transported.In the invention of claim 5, the roll body is made of a single roll portion, making it possible to simplify the structure and reduce weight.In the invention of claim 6, the base is provided with a gripping portion, making it possible to easily and quickly attach and detach the starter jig to the legs of the receiving fixture. [Brief explanation of the drawings]

[0018] [Figure 1] (A) is a perspective view of the first embodiment of the present invention as seen from the front side, (B) is a view taken along the X1-X1 arrows in (A), (C) is a plan view of the first embodiment of the present invention, (D) is a bottom view of the first embodiment of the present invention, (E) is a cross-sectional view taken along the Y1-Y1 arrows in (C), and (F) is a cross-sectional view taken along the Y2-Y2 arrows in (C). [Figure 2] (A) to (C) are process diagrams for attaching the starter jig of the present invention to the opposing legs of adjacent holders, and (C-1) is a cross-sectional view taken along the Yc-Yc arrow in (C). [Figure 3] (D) is a process diagram showing the state in which the first corrugated roof material is transported using the starter jig of the present invention, which is a basic state diagram; (E) is a process diagram showing the removal of the starter jig located on the upper laying side after transportation to the designated position has been completed; and (F) is a process diagram showing the removal of the starter jig located on the lower laying side after transportation to the designated position has been completed. [Figure 4] (G) is a process diagram showing the removal of the starter jig located on the lower rung side after the roof has been transported to the designated location, and (H) is a process diagram showing the first corrugated roof material being placed in the designated location. [Figure 5] FIG. 1 is a partially omitted side view showing the platform, the roll forming machine, and the roof construction location. [Figure 6] 1A to 1C are schematic plan views showing the process of transporting a folded-plate roof material delivered by a roll molding machine to a predetermined position and constructing a folded-plate roof according to the present invention. [Figure 7] (A) is an enlarged view of the starter jig of the present invention being attached to the leg of a receiving fixture, (B) is a side view of the starter jig of the present invention attached to the leg of a receiving fixture, and (C) is a cross-sectional view taken along the Y3-Y3 arrow in (B). [Figure 8] 1A is a vertical cross-sectional side view of a second embodiment of a starter jig of the present invention, and FIG. 1B is a vertical cross-sectional side view of a third embodiment of a starter jig of the present invention. [Figure 9] FIG. 1 is a process diagram illustrating a conventional technique. DETAILED DESCRIPTION OF THE INVENTION

[0019] The present invention will be described below with reference to the drawings. For the sake of convenience, terms indicating directions will be defined. The terms indicating directions below include the longitudinal direction and the width direction. The longitudinal direction refers to the direction in which each component according to the present invention has the longest dimension.

[0020] The width direction is the direction in which the folded plate roofing materials described below are arranged in parallel. The width direction of the starter jig in this invention is the direction perpendicular to the longitudinal direction.

[0021] The starter jig A of the present invention serves to transport new folded-plate roofing material 7 extruded while being formed from a roll forming machine at a construction site for a folded-plate roof in a predetermined direction and to a predetermined position (see Figures 5 and 6). The starter jig A is detachably attached to the legs of a receiving fixture 8 of the folded-plate roofing material 7, which will be described later, and when attached to the legs, the upper part is the upper part and the lower part is the lower part (see Figure 7).

[0022] The starter jig A is mainly composed of an elongated base 1, a roll body 2 provided on the upper surface of the base 1, and a magnet body 3 provided on the lower surface of the base 1 (see FIG. 1). The base 1 has a base main plate portion 11, a guide side portion 12, and a grip portion 13 (see FIGS. 1(A) to 1(F)).

[0023] The base main plate 11 is a substantially rectangular metal plate, with the top surface being the side on which the roll body 2 is attached and the bottom surface being the side on which the magnet body 3 can be magnetized. At both ends of the width direction (direction perpendicular to the longitudinal direction) of the base main plate 11, guide side portions 12, 12 are formed perpendicular to the base main plate 11 toward the underside (see Figures 1(A), (B), (D), and (F)). A gripping portion 13 is formed at the end in the longitudinal direction of the base main plate 11 (see Figure 1(E)). The gripping portion 13 is formed to extend along the longitudinal direction of the base main plate 11. A step portion 13a is formed at the boundary between the gripping portion 13 and the base main plate 11, stepping down toward the underside.

[0024] As described above, the roll body 2 is attached to the upper surface of the base main plate 11 and is composed of a roll section 21 and a holder section 22 (see FIGS. 1(A), 1(B), 1(C), and 1(E)). The roll section 21 is attached to the base main plate 11 via the holder section 22 so that its axial direction is along the longitudinal direction of the base main plate 11. The roll section 21 has a roll shaft 21a, which is journaled by bearing plates 22a, 22a of the holder section 22 (see FIG. 1(E)). The roll section 21 is usually made of a metal material, but may also be made of a soft material. Here, the soft material is rubber or synthetic resin, and a material that is particularly soft and elastic is preferred.

[0025] The roll body 2 is configured with two roll portions 21, 21 having different axial lengths arranged in series (see FIG. 1(C)). One of the two roll portions 21 has a roll portion 21 that is long in the axial direction, and the other has a roll portion 21 that is short in the axial direction. Hereinafter, for ease of understanding the contents of the description, the roll body 2 having the long roll portion 21 will be referred to as a long roll body 2L, and the roll body 2 having the short roll portion 21 will be referred to as a short roll body 2S, and these terms will be used in conjunction with the term roll body 2 (see FIGS. 1(A), (C), and (E)).

[0026] The roll portion 21 of the short roll body 2S of the starter jig A is attached to the upper side of the base main plate portion 11, and the roll portion 21 of the long roll body 2L is attached to the lower side of the base main plate portion 11. Here, the roll portion 21 of the short roll body 2S is made of a soft material, and the roll portion 21 of the long roll body 2L is made of metal.

[0027] As a result, when the folded plate roofing material 7 is transported by the starter jig A, the upper portions of both inclined rising portions 72 of the folded plate roofing material 7 described later are supported and contacted by the short roll portion 21, and the soft material of the roll portion 21 protects the inclined rising portions 72 from being folded while transporting.

[0028] In addition, the lower portions of both of the inclined rising portions 72 are supported and contacted by the roll portions 21 of the long roll body 2L, and the folded plate roofing material 7 can be transported in a stable state by both of the starter jigs A, A (see Figure 3 (D)). As described above, the starter jig A has a roll body 2 that is composed of two roll portions 21, so that one can be made of rubber or synthetic resin and the other can be made of metal, and the folded plate roofing material 7 can be transported while being protected.

[0029] A magnet body 3 is attached to the underside of the base main plate 11 of the base 1 (see FIGS. 1(D), (E), and (F)). The magnet body 3 is disk-shaped, and its diameter is preferably within the width direction (perpendicular to the longitudinal direction) of the base main plate 11. Specifically, it is preferable that the magnet body 3 be housed within the guide side portions 12, 12 formed on both ends of the base main plate 11 in the width direction. The thickness of the disk-shaped magnet body 3 is smaller than the height of the guide side portions 12. In other words, when the starter jig A is attached to the legs of the holder 8 by magnetization, the guide side portions 12, 12 must have enough space to clamp both sides of the legs of the holder 8 in the width direction.

[0030] A plurality of disk-shaped magnet bodies 3 are provided, and these magnet bodies 3, 3, ... are arranged in a row along the longitudinal direction and fixed to the underside of the base main plate 11. In this case, the intervals between the plurality of magnet bodies 3, 3, ... may be set appropriately, and may be either irregular or regular. Each disk-shaped magnet body 3 has a through-hole formed in its center, and is fixed by passing a fastener such as a bolt or screw through the through-hole. Alternatively, the magnet body 3 may be fixed to the underside of the base main plate 11 using a strong adhesive.

[0031] Although not specifically shown, there are also embodiments in which a rubber magnet (sometimes called a rubber magnet) is used as the magnetic body 3. A rubber magnetic body 3 preferably has a substantially rectangular plate shape. Even in this case, the plate-shaped rubber magnetic body 3 is housed on the underside of the base main plate 11 and within both guide side portions 12, 12, and the thickness of the plate-shaped magnetic body 3 must be smaller than the height of the guide side portions 12 (see FIGS. 1(E) and 1(F)).

[0032] Next, we will explain the folded-plate roofing material 7 and receiving fixture 8 used in the construction of a folded-plate roof using the starter jig A of the present invention. First, the folded-plate roofing material 7 is a folded-plate metal component that is long in the longitudinal direction, generally about 50 to 100 meters. The folded-plate roofing material 7 is a fastening type, and its cross-sectional shape in the width direction is approximately V-shaped with a bottom. Sloping rising portions 72, 72 are formed on both sides of the bottom main plate 71 in the width direction, and angled peaks 73, 73 are formed from the upper ends of the rising portions 72, 72. The bottom main plate 71 has an approximately flattened V-shape, but flat ones also exist (see Figures 3(D) and 4(H)).

[0033] A lower rung portion 74 is formed at the angled apex 73 on one side in the width direction of the folded-plate roofing material 7, and an upper rung portion 75 is formed at the angled apex 73 on the other side. The lower rung portion 74 and the upper rung portion 75 are formed in a round rung shape with an arc-shaped portion in their cross section, but there are also square rung types (not shown) in which the lower rung portion 74 and the upper rung portion 75 are roughly square, and vertical rung types in which the lower rung portion 74 and the upper rung portion 75 are roughly inverted L-shaped.

[0034] Next, we will explain the process of constructing a roof using the folded-plate roofing material 7, receiving fixture 8, and structural material 9 using the starter jig A of the present invention. As mentioned above, the starter jig A of the present invention is generally used for the folded-plate roofing material 7 that is first formed by a roll forming machine and sent out to a predetermined position, but this is not necessarily limited to this and it can be used to send out the second and subsequent folded-plate roofing materials 7.

[0035] First, multiple support members 8 of the present invention are placed on a structural member 9 (see Figures 2(A) and 6(A)). The support member 8 is composed of a top portion 81 and legs 82, 82. The top portion 81 has a stepped portion 81a, forming a top with a difference in height (see Figure 2(A)). The legs 82, 82 are generally symmetrical and inclined, forming a generally V-shaped configuration. Therefore, the support member 8 is generally trapezoidal in shape with the top portion 81 and the legs 82, 82. The retaining clip 83 has a washer portion 83a and a tongue portion 83b, and the washer portion 83a is fixed with bolts, nuts, etc. The lower and upper support portions 74, 75 of adjacent folded-plate roofing members 7, 7 are fastened together by sandwiching the tongue portion 83b of the retaining clip 83.

[0036] A method for constructing a folded-plate roof using the starter jig A of the present invention will be described. First, at the roof construction site, a platform 62 is installed on the building under construction, and a roll former 61 is placed on the platform 62 (see Figure 5). The roll former 61 is set to a height approximately equal to the height of the roof construction area of ​​the building. Multiple structural members 9, 9, ... are essentially placed at equal intervals at the roof construction area of ​​the building (see Figures 5 and 6). The longitudinal direction of the structural member 9 and the longitudinal direction of the folded-plate roofing material 7 are positioned perpendicular to each other. Multiple brackets 8, 8, ... are placed and fixed at predetermined intervals on each of the structural members 9, which are arranged side by side at a predetermined interval (see Figures 5 and 6).

[0037] The starter jig A of the present invention is attached to the opposing legs 82, 82 of adjacent holders 8, 8 installed on each structural material 9 on which the first folded-plate roofing material 7 formed and sent out using the roll forming machine 61 is to be placed (see Figures 2(A) and (B)). In other words, the starter jigs A, A are magnetized with the respective magnet bodies 3 and attached to the opposing legs 82, 82 of the adjacent legs 82, 82, respectively.

[0038] The starter jigs A, A together with the opposing legs 82, 82 form an inverted V shape (see Figure 2(B)). The starter jigs A, A are installed so that their respective gripping portions 13, 13 face upward. By attaching the starter jigs A, A to the opposing legs 82, 82 of the adjacent legs 82, 82 as described above, the opposing roll bodies 2, 2 are arranged in an inverted V shape.

[0039] By arranging the opposing roll bodies 2, 2 between the adjacent receiving fixtures 8, 8 in an inverted V-shape, it becomes easier to place the folded plate roofing material 7 between the starter jigs A, A (see Figure 3(D)). In other words, the opposing roll bodies 2, 2 will abut against the two inclined rising portions 72, 72 of the folded plate roofing material 7, respectively. The first folded plate roofing material 7 is transported and moved along the multiple starter jigs A, A, ... between the opposing starter jigs A, A and placed in the specified position (see Figures 5 and 6). Then, when the placement of the first folded plate roofing material 7 in the construction process is completed, each starter jig A is removed.

[0040] To remove the starter jig A, the worker slightly lifts the portion of the lower rung portion 74 of the first corrugated roofing material 7 where the starter jig A is located, and when the worker tries to lift the gripping portion 13 of the starter jig A upward, the magnet body 3 disengages from the leg portion 82 of the receiving fixture 8, and the starter jig A can be removed from the receiving fixture 8 (see Figure 3(E)). Similarly, the worker can also slightly lift the portion of the upper rung portion 75 where the starter jig A is located to remove the starter jig A from the receiving fixture 8 (see Figures 3(F) and 4(G)). By removing all starter jigs A from the receiving fixture 8, the installation of the corrugated roofing material 7 in its designated position is completed (see Figure 4(H)). [Explanation of symbols]

[0041] A...starter jig, 1...base, 11...base main plate portion, 12...guide side portion, 13...gripping portion, 2...roll body, 21...roll portion, 3...magnet body, 8...receiving tool, 82...leg portion, 9...Structural material.

Claims

1. A starter jig comprising an elongated base, a roll body attached to the upper surface of the base, and a magnet body attached to the underside of the base, wherein the base has guide side portions extending downward at both widthwise ends of the base main plate portion, the axial direction of the roll body is configured to coincide with the longitudinal direction of the base, and the magnet body is configured so that it can be magnetized and attached from above to the legs of a plurality of metal holders arranged at equal intervals on a structural material.

2. 2. A starter jig as described in claim 1, characterized in that the width portion of the leg can be loosely inserted between the guide side portions, and the thickness dimension of the magnet body is formed to be smaller than the height of both guide side portions.

3. 3. The starter jig according to claim 1, wherein the roll body is configured by two roll portions having different axial lengths arranged in series.

4. 4. The starter jig according to claim 3, wherein the two roll bodies have an upper side that is short in the axial direction and a lower side that is long in the axial direction, and the roll portion of the upper roll body is made of a soft material.

5. 3. The starter jig according to claim 1, wherein the roll body comprises a single roll portion.

6. 3. The starter jig according to claim 1, wherein the base is provided with a grip portion.

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