Ledger plate coming-off prevention jig

Abstract

To provide a ledger plate coming-off prevention jig and the like which can prevent a ledger plate from coming off upward, can be installed easily, and can smoothly execute work on the ledger plate.SOLUTION: A ledger plate coming-off prevention jig 1 fixes ledger plates 10a and 10b with each other, and prevents the ledger plates 10a and 10b from coming off upward. The ledger plate coming-off prevention jig 1 includes: a covering material 2 which covers a folding portion 12 below an end part of the ledger plate 10a from above; a receiving material 3; and a fastening material 4. The receiving material 3 includes: a covering part 32 which covers the ledger plate 10b from above; and a receiving part 31 continued from the covering part 32, and overlapped vertically with the covering material 2. The fastening material 4 fastens the covering material 2 and the receiving material 3 vertically.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a jig for preventing a cloth board from coming off, which is caused by strong winds or the like.

Background Art

[0002] At a temporary scaffold at a construction site, in order to prevent the cloth boards from being blown up and coming off during strong winds, each cloth board is fixed to a single pipe or the like of the temporary scaffold one by one with wire or a binding band.

[0003] Further, Patent Document 1 describes a fixing fitting for a cloth board having a pressing plate disposed on the upper surfaces of adjacent cloth boards and a support plate that supports the single pipe below these cloth boards from below. By passing a bolt that penetrates the pressing plate between adjacent cloth boards and tightening the shaft portion of the bolt into a nut fixed to the support plate, the single pipe and the cloth board are clamped vertically by the pressing plate and the support plate.

[0004] Furthermore, Patent Documents 2 and 3 describe jigs for maintaining the interval between adjacent cloth boards. In Patent Document 2, the latching portions at both ends of the jig are latched to the folded-back portions of adjacent cloth boards with a spacer sandwiched therebetween, and by tightening a nut onto a bolt at one end of the jig, the folded-back portions of adjacent cloth boards are clamped with the spacer sandwiched therebetween by the latching portions at both ends of the jig. In Patent Document 3, a hook portion at one end of the jig is hooked on the folded-back portion of one cloth board, and the tip of a bolt screwed into a screw hole at the other end of the jig is pressed against the folded-back portion of the other cloth board.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0006] When binding cloth plates one by one to a single pipe or the like with wire ties or binding bands, it takes time for the work, and the wire ties or the like after use become waste. In the fixing fixture of Patent Document 1, the head of the bolt and the pressing plate become convex portions on the cloth plate, and there is a risk that when an operator walks on the cloth plate, the operator may trip, which may hinder the work on the cloth plate.

[0007] Also, although the jigs of Patent Documents 2 and 3 both maintain the interval between the cloth plates, they do not prevent the cloth plates from coming off upward like being lifted by strong wind.

[0008] The present invention has been made in view of the above problems, and an object thereof is to provide a cloth plate detachment prevention jig or the like that can prevent the cloth plate from coming off upward, is easy to install, and can smoothly perform work on the cloth plate.

Means for Solving the Problems

[0009] The present invention for solving the above-described problems is a cloth plate detachment prevention jig that fixes a cloth plate to a fixing target to prevent the cloth plate from coming off, and includes a covering material that covers from above a folded portion below an end portion of the cloth plate, a covering portion that covers the fixing target from above, and a receiving member that is continuous from the covering portion and vertically overlaps with the covering material, and a fastening member that fastens the covering material and the receiving portion vertically.

[0010] In the cloth plate detachment prevention jig of the present invention, the covering material is covered from above a folded portion below an end portion of the cloth plate, the covering portion of the receiving member is covered from above the fixing target, and the covering material and the receiving portion of the receiving member are vertically fastened with a fastening member. Thereby, the cloth plate is fixed to the fixing target via the cloth plate detachment prevention jig, and it is possible to prevent the cloth plate from coming off upward such as being lifted during strong wind, and the installation of the cloth plate detachment prevention jig can be performed by a simple operation. Further, since the cloth plate detachment prevention jig is attached to the folded portion below the cloth plate, almost the entire cloth plate detachment prevention jig including the fastening member can be disposed below the cloth plate, and the work on the cloth plate can be smoothly performed.

[0011] The covering member has a vertical portion and horizontal portions extending in opposite directions from above and below the vertical portion, and it is desirable that the lower horizontal portion of the covering member and the receiving portion overlap vertically on the side opposite to the object to be fixed of the folded portion. Thereby, the covering member has a simple structure and is easy to manufacture. Also, the space required for the fastening work can be easily secured in the space on the side opposite to the object to be fixed.

[0012] The fastening member has a headed bolt passed from below through holes provided in the covering member and the receiving portion, and a nut provided on the upper surface of the covering member and screwed with the shaft portion of the bolt. It is desirable that a locking member for preventing the bolt from falling by locking with the nut is provided at the tip of the shaft portion. With the above locking member, the bolt is prevented from falling out of the jig for preventing the cloth plate from coming off when the bolt is loosened. Also, the covering member, the receiving member, and the fastening member can be carried as a unit, preventing loss of parts during transportation of the jig for preventing the cloth plate from coming off. Furthermore, the work of tightening the bolt can be easily carried out from below using an impact wrench or the like.

[0013] The object to be fixed is, for example, another cloth plate, and the covering portion of the receiving member covers the folded portion below the end of the other cloth plate from above. Alternatively, when the object to be fixed is a single pipe, the covering portion of the receiving member may cover the upper end portion of the cross section of the single pipe from above. In the former case, the cloth plates can be fixed to each other to prevent the cloth plates from coming off upward. In the latter case, the cloth plate can be fixed to the single pipe to prevent the cloth plate from coming off upward.

Advantages of the Invention

[0014] According to the present invention, it is possible to provide a jig for preventing a cloth plate from coming off, which can prevent the cloth plate from coming off upward, is easy to install, and allows work on the cloth plate to be carried out smoothly.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying out the Invention

[0016] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0017] FIG. 1 is a view showing a cloth board detachment prevention jig 1 according to an embodiment of the present invention. The cloth board detachment prevention jig 1 in the present embodiment prevents the cloth board 10 from coming off upward, such as bulging in strong winds, by fixing adjacent cloth boards 10 (10a, 10b) with a single pipe 20 sandwiched therebetween at a temporary scaffold at a construction site.

[0018] Each cloth board 10 is arranged by hooking a hook 11 provided on the single pipe 20 side onto the single pipe 20 from above. Further, at opposite ends sandwiching the single pipe 20 of adjacent cloth boards 10, there is provided a folded-back portion 12 that extends downward from the end portion and is folded back to the opposite side of the single pipe 20. In the example of FIG. 1, the tip of the folded-back portion 12 protrudes upward.

[0019] FIG. 1 is a view of the cloth board detachment prevention jig 1 seen from the axial direction of the single pipe 20, and the cloth board detachment prevention jig 1 includes a cover member 2, a receiving member 3, a fastening member 4, etc. Further, FIG. 2 is a view showing the cover member 2, the receiving member 3, and the fastening member 4 disassembled.

[0020] The cover member 2 is formed by processing a steel plate and has a vertical portion 21 and a horizontal portion 22.

[0021] The vertical portion 21 is a plate-like portion extending in the vertical direction. The horizontal portion 22 is a plate-like portion in the horizontal direction extending in opposite directions from above and below the vertical portion 21. The upper horizontal portion 22 extends toward the single pipe 20 side and is arranged so as to cover the folded-back portion 12 of one of the cloth plates 10a from above. The lower horizontal portion 22 extends to the opposite side of the single pipe 20.

[0022] The receiving member 3 is also formed by processing a steel plate and has a receiving portion 31 and a covering portion 32.

[0023] The receiving portion 31 is a plate-like portion extending horizontally below both cloth plates 10a, 10b and arranged so as to straddle the folded-back portions 12 of both cloth plates 10a, 10b. Above the end of the receiving portion 31 on the side of one of the cloth plates 10a, the lower horizontal portion 22 of the covering member 2 is arranged. The end of the receiving portion 31 and the lower horizontal portion 22 of the covering member 2 are arranged one above the other on the side of the folded-back portion 12 of one of the cloth plates 10a opposite to the single pipe 20 and the other cloth plate 10b.

[0024] A long hole 33 (see FIG. 2) in the extending direction of the receiving portion 31 is formed at the above-mentioned end of the receiving portion 31. A nut 42 is fixed to the upper surface of the lower horizontal portion 22 of the covering member 2 by welding or the like. A hole (not shown) is formed in the horizontal portion 22 at a position communicating with the female screw hole of the nut 42.

[0025] The covering portion 32 is a plate-like portion continuous with the end of the receiving portion 31 on the side of the other cloth plate 10b and folded back above the receiving portion 31. The covering portion 32 is arranged so as to cover the folded-back portion 12 of the cloth plate 10b from above.

[0026] The fastening member 4 fastens the end of the receiving portion 31 on the side of one of the cloth plates 10a and the lower horizontal portion 22 of the covering member 2 one above the other and has a bolt 41 and the above-mentioned nut 42.

[0027] The bolt 41 has a head, and its shaft portion is passed through the long hole 33 of the receiving portion 31 and the above-mentioned hole in the lower horizontal portion 22 of the covering member 2 from below, and is screwed into the nut 42 on the upper surface of the horizontal portion 22. The shaft portion of the bolt 41 protrudes upward from the nut 42, and a locking member 43 that is wider than the shaft portion is provided at its tip. The locking member 43 prevents the bolt 41 from falling by locking to the nut 42, and prevents it from coming off when the bolt 41 is loosened.

[0028] The covering member 2, the receiving member 3, and the fastening member 4 are manufactured using stainless steel materials or steel materials with hot-dip galvanized coating. In addition, the covering member 2 and the receiving member 3 of this embodiment are manufactured by bending flat steel, but it is also possible to manufacture them by welding flat steels together. However, in terms of weight reduction and rust prevention, bending is more desirable.

[0029] In this embodiment, as shown by the arrow in FIG. 3, when the cloth plate 10a is about to be blown upward and detached in the vertical direction due to strong wind or the like, the folded-back portion 12 of the cloth plate 10a catches on the upper horizontal portion 22 of the covering member 2, and further, the receiving portion 31 of the receiving member 3 that is vertically fastened to the lower horizontal portion 22 of the covering member 2 catches on the folded-back portion 12 of the cloth plate 10b.

[0030] As a result, the cloth plate 10a is fixed to another cloth plate 10b that is the object to be fixed, and it is possible to prevent the cloth plate 10a from coming off upward. The same applies when the cloth plate 10b is blown upward. By fixing the cloth plate 10b to another cloth plate 10a (the object to be fixed) via the cloth plate detachment prevention jig 1, it is possible to prevent the cloth plate 10b from coming off upward. In the example of FIG. 3, the receiving portion 31 of the receiving member 3 also catches on the single pipe 20.

[0031] When attaching the cloth plate detachment prevention jig 1, the covering portion 32 of the receiving member 3 is placed over the folded-back portion 12 of the cloth plate 10b from above, and the upper horizontal portion 22 of the covering member 2 is placed over the folded-back portion 12 of the cloth plate 10a from above. Then, the end portion of the receiving portion 31 on the cloth plate 10a side and the lower horizontal portion 22 of the covering member 2 are fastened with the fastening member 4. The tightening of the bolt 41 can be easily carried out by working from below with the impact wrench facing upward.

[0032] In this embodiment, since the hole of the receiving portion 31 through which the shaft portion of the bolt 41 passes is an elongated hole 33, it is possible to adjust the position of the covering material 2 according to the interval between the cloth plates 10a and 10b. Further, when covering the upper horizontal portion 22 of the covering material 2 with the folded-back portion 12 of the cloth plate 10a, as shown in FIG. 4, the work can be easily carried out by tilting the bolt 41 or rotating the covering material 2 around the axis of the bolt 41. This is the same when removing the horizontal portion 22 from the folded-back portion 12 of the cloth plate 10a when removing the cloth plate detachment prevention jig 1. The cloth plate detachment prevention jig 1 can be easily diverted by loosening the bolt 41 and removing it from the cloth plates 10a and 10b.

[0033] In this way, in the cloth plate detachment prevention jig 1 of this embodiment, the covering material 2 is covered from above on the folded-back portion 12 below the end of the cloth plate 10a, the covering portion 32 of the receiving material 3 is covered from above on the folded-back portion 12 of another cloth plate 10b, and the receiving portion 31 of the covering material 2 and the receiving material 3 are fastened vertically with the fastening member 4. Thereby, the cloth plates 10a and 10b can be fixed to each other using the cloth plate detachment prevention jig 1, and it is possible to prevent each other from coming off upward such as being blown up in strong winds, and the installation of the cloth plate detachment prevention jig 1 can also be performed with a simple operation.

[0034] Further, since the cloth plate detachment prevention jig 1 is attached to the folded-back portion 12 below the cloth plates 10a and 10b, the entire cloth plate detachment prevention jig 1 including the fastening member 4 can be disposed below the cloth plates 10a and 10b, and the work on the cloth plates 10a and 10b can also be carried out smoothly. Further, since the cloth plate detachment prevention jig 1 fastens and fixes the covering material 2 and the receiving material 3 vertically with the fastening member 4, the tip of the bolt or the like is not pressed against the folded-back portion 12 of the cloth plates 10a and 10b, and damage to the cloth plates 10a and 10b is less likely to occur.

[0035] Further, the covering material 2 and the receiving material 3 of this embodiment have a simple structure, which facilitates manufacturing. Also, the space required for the fastening work can be easily secured in the space on the side of the folded-back portion 12 of the cloth plate 10a opposite to the single pipe 20 and the cloth plate 10b.

[0036] In addition, the fastening member 4 of the cloth plate detachment prevention jig 1 is prevented from falling off from the cloth plate detachment prevention jig 1 when the bolt 41 is loosened by the locking member 43. Further, the covering member 2, the receiving member 3, and the fastening member 4 can be carried integrally, and loss of parts during transportation of the cloth plate detachment prevention jig 1 can be prevented. Furthermore, the tightening operation of the bolt 41 can be easily performed from below using an impact wrench or the like, and there is no need to put hands or fingers between the cloth plates 10a and 10b, so pinching accidents can be prevented.

[0037] In addition, since the cloth plate detachment prevention jig 1 of the present embodiment has no large protruding portion below the cloth plates 10a and 10b, the possibility of hitting the head when an operator walks below the cloth plates 10a and 10b is low.

[0038] However, the present invention is not limited to the above-described embodiments. For example, the cloth plate detachment prevention jig 1 is not limited to being installed at a location where the cloth plates 10 are adjacent to each other with the single pipe 20 sandwiched therebetween, and the detailed shape of each part of the cloth plate detachment prevention jig 1 also varies according to the installation location of the cloth plate detachment prevention jig 1.

[0039] For example, in the example of FIG. 5, a cloth plate detachment prevention jig 1a is installed at a location where the cloth plates 10 are adjacent to each other directly (without sandwiching the single pipe 20), and a folded-back portion 13 is formed below the opposing ends of these cloth plates 10.

[0040] The cloth plate detachment prevention jig 1a is similar to the previous cloth plate detachment prevention jig 1 in that the horizontal portion 22 on the upper side of the covering member 2 is covered from above by the folded-back portion 13 of one cloth plate 10a, and the covering portion 32 of the receiving member 3 is covered from above by the folded-back portion 13 of the other cloth plate 10b. However, the receiving portion 31 is shorter than the receiving portion 31 of the previous cloth plate detachment prevention jig 1 mainly because the single pipe 20 does not exist.

[0041] In addition, in the example of FIG. 6, a cloth plate detachment prevention jig 1b is installed at a location where the cloth plate 10 and the single pipe 20 at the planar end of the temporary scaffold are adjacent to each other, and the cloth plate 10 is fixed to the single pipe 20 that is the object to be fixed by the cloth plate detachment prevention jig 1b.

[0042] The cloth board detachment prevention jig 1b is similar to the previous cloth board detachment prevention jig 1 in that the upper horizontal part 22 of the covering material 2 is covered from above on the folded-back part 12 on the single tube 20 side of the cloth board 10. However, the covering part 32 of the receiving material 3 is arranged to be covered from above on the upper end part of the cross-section (cross-section orthogonal to the axial direction) of the single tube 20, and its height is larger than that of the covering part 32 of the previous cloth board detachment prevention jig 1 according to the diameter of the single tube 20.

[0043] As described above, the preferred embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that those skilled in the art can come up with various modification examples or correction examples within the scope of the technical idea disclosed in the present application, and it is naturally understood that those also belong to the technical scope of the present invention.

Explanation of Reference Numerals

[0044] 1, 1a, 1b: Cloth board detachment prevention jig 2: Covering material 3: Receiving material 4: Fastening material 10, 10a, 10b: Cloth board 20: Single tube 21: Vertical part 22: Horizontal part 31: Receiving part 32: Covering part 41: Bolt 42: Nut 43: Locking material 12, 13: Folded-back part

Claims

1. A jig for preventing a cloth board from coming off, which fixes the cloth board to an object to be fixed and prevents the cloth board from coming off, a covering material that covers the folded portion below the end of the cloth board from above, a receiving member having a covering portion that covers the object to be fixed from above, and a receiving portion that is continuous from the covering portion and overlaps the covering material vertically, a fastening member that fastens the covering material and the receiving portion vertically, The jig for preventing a cloth board from coming off, characterized by comprising the above.

2. The covering material has a vertical portion and horizontal portions that extend in opposite directions from above and below the vertical portion, The jig for preventing a cloth board from coming off according to claim 1, wherein the lower horizontal portion of the covering material and the receiving portion overlap vertically on the side opposite to the object to be fixed of the folded portion.

3. The fastening member is, a headed bolt that is passed through holes provided in the covering material and the receiving portion from below, a nut that is provided on the upper surface of the covering material and engages with the shaft portion of the bolt, having, The jig for preventing a cloth board from coming off according to claim 1, characterized in that a locking member for preventing the bolt from falling is provided at the tip of the shaft portion by engaging with the nut.

4. The object to be fixed is another cloth board, The jig for preventing a cloth board from coming off according to claim 1, wherein the covering portion of the receiving member covers the folded portion below the end of the other cloth board from above.

5. The object to be fixed is a single pipe, The jig for preventing a cloth board from coming off according to claim 1, wherein the covering portion of the receiving member covers the upper end portion of the cross section of the single pipe from above.

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