Method for repairing a rain gutter

Abstract

To provide a repair method which can safely and quickly repair a deteriorated valley gutter.SOLUTION: Joint parts J1 and J2 where a valley gutter part 30 for replacement and an existing valley gutter part 20 overlap each other are sandwiched relative to a valley gutter 10 while abutting an upper fixation plate 40 and a bottom face fixation plate 50 thereon from an upper side and a lower side. Thereby, the joint parts J1 and J2 are fixed in a valley gutter vertical direction in a state in which four plates are brought into close contact with each other.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to rain gutters such as valley gutters, and particularly to a repair method for rain leakage, aging parts, etc.

Background Art

[0002] In upper houses built on the platform of a railway station, valley gutters are provided together with eaves gutters to drain rainwater pouring onto the roof. Rain gutters such as eaves gutters and valley gutters may develop rain leakage due to corrosion caused by aging and need to be repaired. However, the work of peeling off and replacing the rain leakage part places a heavy burden on the workers.

[0003] In order to omit such repair work, a method of repairing a valley gutter using a material having a waterproof function is known (Patent Document 1). In that method, an inner gutter made of a material such as a glass fiber woven fabric is adhered closely to the corroded valley gutter part and adhered using an epoxy resin or the like.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Valley gutters installed in upper houses, etc. are usually installed at high places. Therefore, the work on the flow path such as the valley gutter involves work from the roof side, causing problems such as restrictions on working hours and safety measures, and also taking time for repair work.

[0006] Therefore, there is a need for a repair method that can be carried out safely and quickly for aging valley gutters, etc.

Means for Solving the Problems

[0007] The repair method of the present invention is applicable to valley gutters and the like. For the repair target section of the rain gutter, it is cut and removed. For the joint parts provided on both sides of the repair target section, a U-shaped upper fixing plate in cross-section is placed on the existing rain gutter part that has not been cut of the rain gutter. A replacement rain gutter part in the shape of a U in cross-section, which is longer than the repair target section and has a length extending to the joint part, is placed under the existing rain gutter part so as to cover the repair target section of the rain gutter. A bottom fixing plate having a length corresponding to the replacement rain gutter part is placed under the replacement rain gutter part. The upper fixing plate, the existing rain gutter part, the replacement rain gutter part, and the bottom fixing plate are fixed at the joint part with respect to the vertical direction of the rain gutter.

Effect of the Invention

[0008] According to the present invention, it is possible to implement a repair method that can be carried out safely and quickly for an aging valley gutter or the like.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4A

Figure 4B

Figure 4C

Figure 4D

Embodiments for Carrying Out the Invention

[0010] Hereinafter, with reference to the drawings, the repair method of the valley gutter according to the present embodiment will be described.

[0011] FIG. 1 is a plan view schematically showing the upper part of a station building from the front side. The upper part 100 is a structure having roofs 120A and 120B on the platform of the station building, and is supported by columns 140. The roofs 120A and 120B are here made of corrugated slate materials in cross section, and are symmetrically arranged with respect to the columns 140.

[0012] The roofs 120A and 120B are respectively supported by beam members 130A and 130B via purlin members 160A and 160B. A valley gutter 10 is installed between the roofs 120A and 120B along the extending direction of the roofs 120A and 120B (the direction perpendicular to the plane of the paper), and thin joint portions extending from the edges of both side surfaces are joined and fixed to a part of the purlin members 160A and 160B. Rainwater pouring down onto the roofs 120A and 120B that are inclined toward the valley gutter 10 flows down into the valley gutter 10 and is drained through a downspout (elbow) 150 connected to the valley gutter 10.

[0013] FIG. 2 is a schematic perspective view showing a part of the valley gutter 10. FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 2. Here, it shows the part where the rain leakage occurred was cut off, removed, and the part where repair work was carried out. However, the joint portions of the valley gutter 10 with the purlin members 160A and 160B are not shown.

[0014] In FIG. 2, a state is shown in which a section B is cut as a rain leakage part (hereinafter referred to as a repair target section), and an exchange part (hereinafter referred to as an exchange valley gutter part) 30 is arranged so as to cover the repair target section B where a space has occurred. The exchange valley gutter part 30 is attached and fixed to existing valley gutter parts (hereinafter referred to as existing valley gutter parts) 20 remaining on both sides of the repair target section B.

[0015] The exchange valley gutter part 30 is configured in a U-shaped cross section, similar to the existing valley gutter parts 20. Also, it is arranged so as to be placed on the existing valley gutter parts 20. Therefore, the outer surface 20S2 of the existing valley gutter parts 20 is in contact with the inner surface 30S1 of the exchange valley gutter part 30. The exchange valley gutter part 30 has a length M along the longitudinal direction of the valley gutter.

[0016] On both sides of the gutter section 30 for replacement (both side portions of the section B to be repaired), fixed plates (hereinafter referred to as upper fixed plates) 40 are installed so as to overlap upward. The first upper fixed plate 40A and the second upper fixed plate 40B that constitute the fixed plate 40 are formed of plates having a U-shaped cross section, and here, the width L, which is the length along the longitudinal direction of the gutter, is the same.

[0017] The length d along the short side direction of the gutter of the first and second upper fixed plates 40A and 40B is determined to be the length D in the short side direction of the existing gutter section 20, that is, the length corresponding to the width of the bottom surface 10B of the gutter 10. Therefore, the rising portions of the first and second upper fixed plates 40A and 40B are in contact with the inner surface 20S1 of the existing gutter section 20. Further, the width L of the first and second upper fixed plates 40A and 40B is determined in accordance with the length M along the longitudinal direction of the gutter of the gutter section 30 for replacement.

[0018] On the lower surface side of the gutter section 30 for replacement, a rectangular plate (hereinafter referred to as a bottom surface fixed plate) 50 is installed. The bottom surface fixed plate 50 is configured as a plate having a length corresponding to the length M along the longitudinal direction of the gutter of the replacement gutter section 30.

[0019] On the other hand, on the outer surface 30S2 side of the gutter section 30 for replacement, rectangular plates (hereinafter referred to as side surface fixed plates) 60 are installed on both side surfaces of the gutter 10 in accordance with the installation positions of the first upper fixed plate 40A and the second upper fixed plate 40B. The first and second side surface fixed plates 60A and 60B installed on each side surface respectively have substantially the same width as the width L of the first and second upper fixed plates 40A and 40B.

[0020] As described above, the existing gutter portion 20 and the replacement gutter portion 30 are in contact with each other such that the replacement gutter portion 30 is disposed below the existing gutter portion 20, and are sandwiched between the upper fixing plate 40 above and the bottom fixing plate 50 below. At the portions in contact with each other (hereinafter referred to as joint portions) J1 and J2, from above to below of the gutter 10, the upper fixing plate 40, the existing gutter portion 20, the replacement gutter portion 30, and the bottom fixing plate 50 overlap in this order (see FIG. 3).

[0021] Further, since the side fixing plates 60 are installed on both outer side surfaces of the replacement gutter portion 30, at the joint portions J1 and J2, from the inner side to the outer side in the gutter transverse direction, the upper fixing plate 40, the existing gutter portion 20, the replacement gutter portion 30, and the side fixing plate 60 are in contact with each other in this order (see FIG. 3).

[0022] By fixing the plates to each other at such overlapping joint portions J1 and J2, a water-stopping function can be provided to the gutter 10. Here, the joint portions J1 and J2 are fixed by using bolts B1 and screws B2.

[0023] FIGS. 4A to 4D are diagrams showing the steps of the repair work for the rain leakage portion. Hereinafter, the repair work performed from the lower side of the gutter 10 will be described.

[0024] As described above, the operator determines the repair target section B according to the rain leakage portion, cuts it, and removes it. Then, the replacement gutter portion 30 is prepared (manufactured) according to the size of the repair target section B, and the upper fixing plate 40 and the bottom fixing plate 60 are also prepared accordingly.

[0025] In order to perform bolt fixing at the joint portions J1 and J2, through holes are formed in accordance with the locations where the bolts B1 pass through the existing gutter portion 20 (see FIG. 2). Accordingly, through holes are also formed in advance at the locations where the bolts B1 pass through the replacement gutter portion 30. Similarly, through holes for the bolts B1 to pass through are formed in the upper fixing plate 40 and the bottom fixing plate 60 as well.

[0026] First, the operator inserts the bolt B1 with the nut N1 screwed thereon into the through hole with respect to the upper fixing plate 40. Then, while inserting the bolt B1 into the through hole, the operator places the upper fixing plate 40 on the existing valley gutter portion 20 with respect to the existing valley gutter portion 20 (see Fig. 4A).

[0027] Thereafter, the replacement valley gutter portion 30 is superposed from below the existing valley gutter portion 20 in alignment with the position of the bolt B (see Fig. 4B). As a result, the repair target section B that was a space is covered by the replacement valley gutter portion 30.

[0028] Furthermore, the bottom fixing plate 50 is superposed from below on the replacement valley gutter portion 30 in alignment with the position of the bolt B1. Then, the nut N2 is tightened with respect to the bolt B1 whose tip protrudes from the bottom fixing plate 50 (see Fig. 4C). Note that, in order to enhance the water stop function, a ring-shaped rubber packing m is interposed between the nut N2 and the bottom fixing plate 50 here.

[0029] Then, the side fixing plate 60 is superposed on the outer surface 30S2 of the replacement valley gutter portion 30 and screwed with the screw B2 (see Fig. 4D). As a result, a series of repair operations are completed. Note that, in order to further enhance the water stop performance, a butyl tape or the like may be pasted between the adjacent plates of the joint portions J1 and J2, or all the surfaces in contact with each other between the plates may be adhered. Also, the upper portions of the bolt B1 or the screw B2 may be subjected to a sealing process.

[0030] As described above, according to the present embodiment, the joint portions J1 and J2 where the replacement valley gutter portion 30 and the existing valley gutter portion 20 overlap are sandwiched by applying the upper fixing plate 40 and the bottom fixing plate 50 from above and below, respectively. As a result, in the vertical direction of the valley gutter, the four plates are in close contact with each other, and the joint portions J1 and J2 are fixed.

[0031] Furthermore, at the joint portions J1 and J2, the side fixing plates 60 are screwed from the outside of the replacement valley gutter portion 30. As a result, also in the direction across the valley gutter, the four plates are in close contact with each other, and the joint portions J1 and J2 are fixed.

[0032] By adopting a fixing method in which the replacement valley gutter portion 30 and the existing valley gutter portion 20 are sandwiched by two fixing plates respectively in the vertical direction and the direction across the valley gutter of the valley gutter 10, a waterproof valley gutter can be realized by fixing the plates. Moreover, during a series of repair operations, there is no need to perform operations from the roof side, and all operations can be performed from the lower side of the valley gutter. According to the repair operation of the present embodiment, a safe and quick repair operation of the valley gutter can be performed.

[0033] In consideration of the fact that rain leakage frequently occurs on the bottom surface side of the valley gutter, without preparing the side fixing plates, in the direction across the valley gutter, the upper fixing plate 40, the existing valley gutter portion 20, and the replacement valley gutter portion 30 may be screwed and fixed. Also, fixing means other than fixing by bolts such as welding may be used.

[0034] A fixing plate may be further interposed between the upper fixing plate 40, the existing valley gutter portion 20, the replacement valley gutter portion 30, and the bottom fixing plate 50. The same applies to the direction across the valley gutter. Also, sealing treatment, adhesion, etc. may be performed as appropriate according to need. The materials of the upper fixing plate 40, the replacement valley gutter portion 30, the bottom fixing plate 50, and the side fixing plate are arbitrary, and the replacement valley gutter portion 30 may be used, or it may be constituted by other materials having strength and waterproofness. Furthermore, different materials may be used for each plate.

[0035] In the present embodiment, repair work is being performed on the valley gutter installed on the upper roof of the station building, but it is also possible to perform the work on the valley gutters installed on buildings other than the station building. Also, it is possible to apply it to general rain gutters such as eaves gutters.

Description of Reference Numerals

[0036] 10 Valley gutter B Area to be repaired 20 Existing valley gutter part 30 Replacement valley gutter part 40 Upper fixing plate 50 Bottom fixing plate 60 Side fixing plate 100 Upper house

Claims

1. Cut and remove the repair target section of the rain gutter, For the joint parts provided on both sides of the repair target section, place a U-shaped upper fixing plate in cross-section on the existing rain gutter part where the rain gutter has not been cut, Place a replacement rain gutter part with a U-shaped cross-section that is longer than the repair target section and extends to the joint part under the existing rain gutter part so as to cover the repair target section of the rain gutter, Place a bottom fixing plate having a length corresponding to the replacement rain gutter part under the replacement rain gutter part, Fix the upper fixing plate, the existing rain gutter part, the replacement rain gutter part, and the bottom fixing plate at the joint part in the vertical direction of the rain gutter. A method for repairing a rain gutter, characterized by the above.

2. Furthermore, attach a side fixing plate to the outer surface of the replacement rain gutter part according to the joint part, and fix the upper fixing plate, the existing rain gutter part, the replacement rain gutter part, and the side fixing plate in the transverse direction of the rain gutter. The method for repairing a rain gutter according to claim 1, characterized by this.

3. The method for repairing a rain gutter according to claim 2, characterized in that the upper fixing plate, the existing rain gutter part, the replacement rain gutter part, and the side fixing plate are fixed by screwing.

4. The method for repairing a rain gutter according to any one of claims 1 to 3, characterized in that the upper fixing plate, the existing rain gutter part, the replacement rain gutter part, and the bottom fixing plate are fixed using bolts and nuts.

5. The method for repairing a rain gutter according to any one of claims 1 to 4, characterized in that it is performed on a valley gutter.

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