JP7499052B2 - Protective devices, cleaning methods, inspection methods, and repair methods - Google Patents

Description

The present invention relates to a protective device, a method for cleaning the exterior of a building, a method for inspecting the exterior of a building, and a method for renovating the exterior of a building.

Ladders have traditionally been used for cleaning, inspecting, and repairing the exterior of buildings, such as roofing materials, exterior wall materials, and various equipment attached to these. Ladders are leaned against the roof or exterior wall of a building from the ground. Workers can clean the exterior of a building by ascending and descending the ladder. In this case, the gutter installed on the eaves of the roof may interfere with the installation of the ladder. Patent Document 1 discloses a ladder that allows a space to be provided between the top of the ladder and the eaves of the roof to prevent the ladder from crushing the gutter.

Japanese Patent Application Laid-Open No. 11-303554

However, in buildings with three or more floors, it is difficult to clean the exterior of the building by leaning a ladder from the ground. For example, in buildings with three or more floors, rope work at height is common, where workers move along ropes suspended from the roof to clean the exterior of the building. However, if a gutter is installed on the underwater side of the roof, it is difficult to use the above-mentioned rope work at height to clean, inspect, or repair the exterior of the building located vertically below the gutter, because the rope suspended from the roof could crush the gutter.

The present invention aims to provide a protective device, cleaning method, inspection method, and repair method that allows cleaning, inspection, repair, etc. of the exterior of a building to be performed using a rope from a roof on which gutters are installed.

The protection device according to the first aspect of the present invention is a gutter protection device that includes a protection section that protects the gutter, a positioning section that abuts against the exterior wall of a building vertically below the gutter to position the protection section relative to the gutter, and a fixing section that fixes the protection section, which is positioned by the positioning section, to the building vertically above the gutter.

The protective device according to one embodiment of the present invention comprises a jig body that can be placed on the sloped roof surface of the building, and a hook-shaped portion that extends from the jig body in a hook-like shape and abuts against the exterior wall of the building vertically below the gutter located on the underwater side of the sloped roof surface when the jig body is placed on the sloped roof surface, and the protective portion is composed of at least one of the jig body and the hook-shaped portion, the positioning portion is composed of the hook-shaped portion, and the fixing portion is composed of the jig body.

In one embodiment of the present invention, the hook portion is equipped with a length adjustment mechanism that allows the extension length to be adjusted.

In one embodiment of the present invention, the hook-shaped portion is equipped with an angle adjustment mechanism that can adjust the inclination angle relative to the jig body.

In one embodiment of the present invention, the jig body is provided with a rope support section on its upper surface located vertically upward in the above-mentioned position, capable of supporting a rope that is suspended along the above-water side to the below-water side of the sloped roof surface.

As one embodiment of the present invention, the jig body includes a plurality of side members spaced apart and extending along a predetermined direction, and a plurality of cross bars that are installed between the plurality of side members and spaced apart in the predetermined direction, and the rope support portion is formed by the plurality of cross bars.

In one embodiment of the present invention, the fixing portion is formed by the cross bar.

The second aspect of the present invention is a cleaning method in which the above-mentioned protective device is installed in the building and the exterior of the building is cleaned.

The third aspect of the present invention is an inspection method in which the above-mentioned protective device is installed in the building and the exterior of the building is inspected.

The fourth aspect of the present invention is a renovation method in which the above-mentioned protective device is installed in the building and the exterior of the building is renovated.

The present invention provides a protective device, a cleaning method, an inspection method, and a repair method that enable cleaning, inspection, repair, etc. of the exterior of a building to be performed using a rope from a roof on which a gutter is installed.

1 is a perspective view showing a state in which a working jig as one embodiment of a protection device according to the present invention is installed on a sloped roof surface of a building. FIG. 2 is a vertical sectional view of the working jig in the state shown in FIG. 1 . FIG. 2 is a perspective view showing a state in which the working jig shown in FIG. 1 is being installed on a sloped roof surface.

The protective device, cleaning method, inspection method, and repair method according to the present invention will be described below with reference to the drawings. The same reference numerals are used to designate the same components in each drawing.

Figure 1 is a perspective view showing the installation state of a work jig 1 as one embodiment of a protective device according to the present invention, in which the work jig 1 is installed on a sloped roof surface 101 of a building 100. Figure 2 is a vertical cross-sectional view of the work jig 1 shown in Figure 1 in the installed state.

First, an overview of the building 100 will be provided. The building 100 is, for example, a 3-8 story medium-rise building with a steel frame, and has a framework made up of framework members such as columns and beams. The framework members that make up the framework are standardized in advance, and are manufactured in a factory beforehand, then transported to the construction site and assembled.

Furthermore, the building 100 has exterior walls 110 that separate the interior and exterior of the frame structure, floors of each floor that are supported by beams of the frame structure, and a roof 112 that covers the upper part of the frame structure.

The exterior wall 110 includes an exterior wall material 120 as the outside of the building 100. The "outside of the building" refers to the part of the building that is exposed to the outdoor space, and includes not only roofing materials and exterior wall materials, but also sashes, exterior materials such as copings and downspouts, and various equipment such as intake and exhaust hoods. The exterior wall material 120 in this embodiment is a rectangular plate-shaped exterior wall panel. In addition, the exterior wall 110 is provided with insulation material and interior material that form an insulation layer on the indoor side of the exterior wall material 120.

The exterior wall material 120 may be, for example, a panel of lightweight aerated concrete (hereinafter referred to as "ALC." "ALC" is an abbreviation for "autoclaved light weight concrete"), metal or ceramic siding, extruded cement board, or wood-based panel. By connecting this exterior wall material 120 around the outer periphery of the framework, the outer skin layer of the exterior wall 110 can be formed.

As the insulating material, for example, in addition to panel-shaped insulating material made of foamed resin materials such as phenol foam, polystyrene foam, and urethane foam, fiber-based insulating material such as rock wool can also be used. By placing this insulating material on the indoor side of the exterior wall material 120 along the inner surface of the exterior wall material 120, an insulating layer of the exterior wall 110 can be formed. As the interior material, for example, gypsum board can be used, and by connecting the interior material to the indoor side of the insulating material, an inner skin layer of the exterior wall 110 can be formed.

The floor section is located between the layers of the building 100. The floor section includes a floor slab material. The floor slab material is installed between the beams of the frame structure and is directly or indirectly supported by the beams. As the floor slab material, for example, an ALC panel can be used, but other materials such as folded plates, extruded cement boards, and wood panel materials can also be used.

The roof section 112 comprises a sloped roof section 121 and a flat roof section 122.

The sloped roof portion 121 includes a roof material 132 as the exterior of the building 100. More specifically, the sloped roof portion 121 of this embodiment includes a roof slab material 131 and a roof material 132 that is installed on the roof slab material 131 via a sheathing board and a waterproof sheet. The roof slab material 131 of this embodiment is supported by a ridge beam 123, a purlin beam 124, a girder beam 125, and a slope beam 126 as part of the framework structure. For example, an ALC panel or the like can be used as the roof slab material 131, but other materials may also be used. For example, a galvalume steel sheet (registered trademark) or the like can be used as the roof material 132, but other materials may also be used.

In addition, a gutter 140 is provided on the downstream side of the sloped roof surface 101 of the sloped roof portion 121 to collect rainwater that runs down the sloped roof surface 101 and guide it to the ground or sewer. The gutter 140 has, for example, a semi-cylindrical water receiving portion 140a with an arc-shaped cross section. Rainwater that runs down the sloped roof surface 101 to the downstream side enters the water receiving portion 140a of the gutter 140 and is guided to the ground or sewer.

As shown in Figures 1 and 2, the sloped roof portion 121 in this embodiment is arranged adjacent to the flat roof portion 122 with the rising portion 122a provided on the outer edge of the flat roof portion 122 in between, but is not limited to this configuration.

The flat roof section 122 of this embodiment includes a roof slab material 133, a base material 134 laminated on the roof slab material 133, and a waterproof sheet 135 made of polyvinyl chloride or the like laminated on the base material 134. The roof slab material 133 of this embodiment is supported by a ridge beam 123 as part of the framework structure. The roof slab material 133 can be, for example, an ALC panel, but other materials may also be used.

As described above, the outer edge of the flat roof section 122 is provided with a rising section 122a. The waterproof sheet 135 described above is raised along the rising section 122a and extends to a position covered by the capping 136 attached to the upper end of the rising section 122a. In addition, a capping protection cover 139 that covers the capping 136 is attached to the upper end of the rising section 122a in this embodiment so that the rope 150 used in the rope work at height described later will not press against the capping 136 and damage it.

In addition, in the flat roof portion 122 of this embodiment, the protrusion 137 fastened to the ridge beam 123 by a fastening member such as a bolt protrudes vertically upward from the floor surface of the flat roof portion 122 composed of the waterproof sheet 135. The protrusion 137 of this embodiment is fastened to the ridge beam 123, but may be fastened to another part of the framework structure. The protrusion 137 of this embodiment may be fastened directly to the ridge beam 123, or indirectly to the ridge beam 123 via another metal fitting. As shown in Figures 1 and 2, in this embodiment, two protrusions 137 are provided at positions spaced apart along the extension direction of the rising portion 122a, and a scaffolding single pipe as a cross member 138 is fastened to the two protrusions 137 by a fastening member such as a bolt via a mounting fitting. Although details will be described later, in this embodiment, one end of the rope 150 used in rope work at height can be anchored to the cross member 138, so that the other end of the rope 150 can be suspended along the sloped roof surface 101 of the sloped roof portion 121. Also, although details will be described later, in this embodiment, one end of the mooring rope as the tension member 31 is anchored to the cross member 138, and the other end of the mooring rope as the tension member 31 is fixed to the fixing part 43 of the working jig 1 described later. In this way, the mooring rope as the tension member 31 can apply a tensile force to the working jig 1 described later. In addition to the tension member 31 that applies a tensile force to the working jig 1, a tension member 32 that applies a tensile force to the cushioning mat 4 described later is also used in this embodiment (see FIG. 1).

Next, we will provide a detailed explanation of the work tool 1 that is installed and used on the sloped roof surface 101 of the sloped roof portion 121 of the building 100.

The work tool 1 is used, for example, in work such as cleaning, inspection, and repair of the sloped roof portion 121. For example, a worker can move on the sloped roof surface 101 by using the work tool 1 installed on the sloped roof surface 101 as a scaffolding member.

The work tool 1 is also used for cleaning, inspection, repair, and other work on the exterior wall 110 that extends vertically downward on the underwater side of the sloped roof portion 121. For example, a worker can move vertically along the exterior wall 110 that extends vertically downward on the underwater side of the sloped roof surface 101 by using a rope 150 such as a safety rope that is suspended from the abovewater side to the belowwater side along the sloped roof surface 101. The work tool 1 is installed in advance on the sloped roof surface 101 before the rope 150 is suspended. This allows the rope 150 to be supported by the work tool 1 on the sloped roof surface 101. In FIG. 1, two ropes 150 are supported by the work tool 1, but the number of ropes is not particularly limited. Hereinafter, the work of cleaning, inspection, and repair of the exterior of the building 100 using such ropes 150 suspended from the roof will simply be referred to as "rope work at high altitudes."

The work tool 1 may be installed directly on the sloped roof surface 101, or may be installed on the sloped roof surface 101 via a shock-absorbing mat 4 as shown in Figures 1 and 2. The shock-absorbing mat 4 may be configured in any manner as long as it can prevent damage to the roof material 132 caused by the work tool 1. The shock-absorbing mat 4 may be made of, for example, a sheet material made of urethane foam.

The work jig 1 as a protection device for the gutter 140 includes a protection section 41 that protects the gutter 140, a positioning section 42 that abuts against the exterior wall 110 of the building 100 vertically below the gutter 140 to position the protection section 41 relative to the gutter 140, and a fixing section 43 that fixes the protection section 41, positioned by the positioning section 42, to the building 100 vertically above the gutter 140. Details will be described later, but the protection section 41, positioning section 42, and fixing section 43 of this embodiment are formed by one or both of the jig body 2 and the hook-shaped section 3 of the work jig 1.

As shown in Figures 1 and 2, the work jig 1 comprises a jig body 2 and a hook-shaped portion 3. The jig body 2 is configured so that it can be placed on the sloped roof surface 101 of the building 100. The hook-shaped portion 3 extends in a hook shape from the jig body 2. The hook-shaped portion 3 extends vertically downward from a gutter 140 located on the water side of the sloped roof surface 101 when the jig body 2 is placed on the sloped roof surface 101 (see Figures 1 and 2. Hereinafter, simply referred to as the "placed state") and the jig body 2 is placed on the sloped roof surface 101. The hook-shaped portion 3 abuts against the exterior wall 110 of the building 100 vertically below the gutter 140. In this way, the work jig 1 can cover the periphery of the gutter 140, more specifically the vertically upward and horizontally outdoor side of the gutter 140 (the left side of the gutter 140 in FIG. 2), with the jig body 2 and the hook-shaped portion 3 extending from the jig body 2, thereby protecting the gutter 140 from the surroundings. In addition, a mooring rope is fixed to the jig body 2 as a tension member 31 in the resting state, and this tension member 31 applies a tension force toward the above-water side.

That is, in the working jig 1 of this embodiment, both the jig body 2 and the hook-shaped portion 3 cover the vertical upper side of the gutter 140 and the horizontal outdoor side (the left side of the gutter 140 in FIG. 2). Therefore, the protective portion 41 of the gutter 140 of this embodiment is composed of both the jig body 2 and the hook-shaped portion 3.

In addition, in the working jig 1 of this embodiment, the hook-shaped portion 3 abuts against the outer wall 110, so that the position of the protective portion 41, which is composed of both the jig body 2 and the hook-shaped portion 3, is determined relative to the gutter 140. Therefore, the positioning portion 42 of this embodiment is composed of the hook-shaped portion 3.

Furthermore, in the working jig 1 of this embodiment, a mooring rope as a tensile member 31 is fixed to the jig body 2. One end of the mooring rope as the tensile member 31 is moored to the cross member 138 described above, and the other end is fixed to the jig body 2. The jig body 2 does not slide down to the underwater side in the inclination direction A due to the tensile force of the mooring rope as the tensile member 31 toward the abovewater side. Therefore, the working jig 1 can be installed at a position where the above-mentioned hook-shaped portion 3 abuts against the outer wall 110 and the protective portion 41 consisting of the jig body 2 and the hook-shaped portion 3 properly protects the gutter 140. Therefore, the fixing portion 43 of this embodiment is composed of the jig body 2 to which the tensile member 31 is fixed. Note that the "incline direction A" means both the direction from the abovewater side of the sloped roof surface 101 toward the belowwater side and the direction from the belowwater side of the sloped roof surface 101 toward the abovewater side.

As described above, the protective section 41 in this embodiment is composed of both the jig body 2 and the hook-shaped section 3, but is not limited to this configuration. Either the jig body 2 or the hook-shaped section 3 may constitute the protective section 41 by covering the vertical upper side of the gutter 140 and the outdoor side in the horizontal direction (the left side of the gutter 140 in FIG. 2).

The work jig 1, which serves as a protective device for the gutter 140, is provided with a protective part 41, and thus can cover the periphery of the gutter 140, more specifically the vertically upward and horizontally outdoor side of the gutter 140 (the left side of the gutter 140 in FIG. 2). As a result, the rope 150 extends along the protective part 41 vertically upward of the gutter 140, and is suspended vertically downward along the protective part 41 on the horizontally outdoor side of the gutter 140 (the left side of the gutter 140 in FIG. 2). As a result, the rope 150 is less likely to interfere with the gutter 140, and the occurrence of the rope 150 crushing the gutter 140 is suppressed.

In addition, by providing the positioning portion 42 to the work tool 1 as a protective device for the gutter 140, it is possible to suppress the shaking of the protective portion 41 due to the pressing force of the rope 150. This can increase the safety of the worker who is suspended by the rope 150 during rope work at high altitudes. Specifically, since the positioning portion 42 abuts against the exterior wall 110, even if the protective portion 41 receives a pressing force from the rope 150 toward the exterior wall 110, the protective portion 41 is unlikely to move closer to the exterior wall 110. This can suppress the shaking of the worker suspended by the rope 150 during rope work at high altitudes, thereby increasing the safety of the worker.

Furthermore, the pressing force acting on the protective part 41 from the rope 150 can be received by the outer wall 110 because the positioning part 42 is in contact with the outer wall 110. Therefore, even when using a jig body 2 placed on a sloped roof surface 101 as in this embodiment, the pressing force acting on the protective part 41 from the rope 150 can be prevented from causing the above-water side of the jig body 2 to rotate upward with the below-water side as a fulcrum. In other words, even when using a jig body 2 placed on a sloped roof surface 101, the safety of the worker suspended from the rope 150 during rope work at height can be increased.

The following provides further details about the work tool 1 of this embodiment.

As shown in FIG. 1, the jig body 2 of this embodiment is equipped with a rope support part 11. The rope support part 11 is provided on the upper surface located vertically upward when placed on the floor. This rope support part 11 can support a rope 150 that is suspended along the above-water side to the below-water side of the sloped roof surface 101.

More specifically, the jig body 2 in this embodiment is configured in a ladder shape and includes multiple (two in this embodiment) side members 21 and multiple cross bars 22. In this embodiment, each side member 21 is configured from a square bar member extending in a straight line. The multiple side members 21 are spaced apart and extend approximately parallel to each other. For ease of explanation, the direction in which the multiple side members 21 extend parallel to each other is referred to as the longitudinal direction B of the jig body 2 below. As shown in Figures 1 and 2, the longitudinal direction B of the jig body 2 in the placed state approximately coincides with the inclination direction A of the sloped roof surface 101.

Each horizontal bar 22 is installed between multiple (two in this embodiment) side members 21. In this embodiment, each horizontal bar 22 is composed of a round bar member extending in a straight line. The multiple side members 21 are connected by the installed horizontal bars 22 in the state of extending approximately parallel to each other as described above. The multiple horizontal bars 22 are arranged at a predetermined interval apart in the longitudinal direction B. The multiple horizontal bars 22 extend approximately parallel to each other in a direction approximately perpendicular to the longitudinal direction B. For ease of explanation, the extension direction of the multiple horizontal bars 22 will be referred to as the width direction C of the jig body 2 below. In addition, the direction perpendicular to the longitudinal direction B and width direction C of the jig body 2 will be referred to as the thickness direction E of the jig body 2.

As shown enlarged in the upper dashed circle in FIG. 2, each side member 21 in this embodiment has a support surface 21a that supports the cross rail 22, and a placement surface 21b that is placed on the sloped roof surface 101 on the opposite side to the support surface 21a. In this embodiment, the multiple side members 21 are arranged at a predetermined interval in the width direction C so that the support surfaces 21a of each side member 21 extend approximately parallel to the longitudinal direction B in the same plane. Hereinafter, the collective plane portion formed by the collection of the support surfaces 21a of the multiple side members 21 is referred to as the "collective support surface 5 of the multiple side members 21". Furthermore, in this embodiment, the multiple side members 21 are arranged at a predetermined interval in the width direction C so that the placement surfaces 21b of each side member 21 extend approximately parallel to the longitudinal direction B in the same plane. Hereinafter, the collective plane portion formed by the collection of the placement surfaces 21b of the multiple side members 21 is referred to as the "collective placement surface 6 of the multiple side members 21".

Each crosspiece 22 is fixed to the side materials 21 while being supported on the collective support surface 5 of the side materials 21. The jig body 2 of this embodiment is placed on the sloped roof surface 101 with the collective placement surface 6 of the side materials 21 facing downward so as to face the sloped roof surface 101. Therefore, in the placed state, the collective support surface 5 of the side materials 21 faces upward. In other words, the multiple crosspieces 22 supported on the collective support surface 5 of the multiple side materials 21 constitute the upper surface of the jig body 2. Therefore, the rope support part 11 of this embodiment is composed of multiple crosspieces 22. By configuring the rope support part 11 with multiple crosspieces 22, in addition to supporting the rope 150 on the sloped roof surface 101, it becomes easier to use it as a foothold for workers on the sloped roof surface 101. In addition, by placing the collective mounting surface 6 of the multiple side members 21, which does not have multiple cross bars 22, on the sloped roof surface 101, the stability of the installation of the jig body 2 on the sloped roof surface 101 can be improved.

As described above, the jig body 2 is configured in a ladder shape with multiple (two in this embodiment) side members 21 and multiple horizontal bars 22. Therefore, the jig body 2 of this embodiment has multiple rectangular openings 23 defined by two side members 21 adjacent to each other in the width direction C among the multiple side members 21 and two horizontal bars 22 adjacent to each other in the longitudinal direction B among the multiple horizontal bars 22. As shown in FIG. 1, in this embodiment, a mooring rope is fixed as a tensile material 31 to the horizontal bar 22 located most above the water in the placed state. In other words, the fixing part 43 of this embodiment is configured by the above-mentioned horizontal bar 22. More specifically, the fixing part 43 of this embodiment is configured by the horizontal bar 22 located most above the water in the placed state. In this way, by configuring the fixing part 43 with the above-mentioned horizontal bar 22, the tensile material 31 can be easily wound around the horizontal bar 22 by using the opening 23 adjacent to the horizontal bar 22. Therefore, the tensile material 31 can be easily fixed to the jig body 2.

Furthermore, in the jig body 2 of this embodiment, at least some of the horizontal bars 22 are provided with a movement restricting portion 22a that restricts the movement of the rope 150 in the width direction C. The movement restricting portion 22a is, for example, composed of a flange portion protruding radially outward from the horizontal bar 22. As shown in FIG. 1, in this embodiment, a flange portion as the movement restricting portion 22a is formed on the horizontal bar 22 located furthest below the water in the placed state. In addition, two flange portions as the movement restricting portion 22a are formed at positions spaced apart in the axial direction (the same direction as the width direction C) on the horizontal bar 22 located furthest below the water in the placed state. In this embodiment, the horizontal bar 22 located furthest below the water in the placed state supports the rope 150 between the two flange portions as the movement restricting portion 22a. This makes it possible to suppress the rope 150 supported by the jig body 2 from moving unintentionally in the width direction C. Therefore, the safety of the worker who is suspended from the rope 150 during rope work at high altitudes can be further improved.

In the jig body 2 of this embodiment, the movement restricting portion 22a is provided only on the crosspiece 22 located furthest below the waterline when placed on the surface, but this is not a limitation. The movement restricting portion 22a may be provided on the other crosspieces 22. In addition, the movement restricting portion 22a of this embodiment is formed of the flange portion described above, but the configuration is not particularly limited as long as it restricts the movement of the supported rope 150 in the width direction C.

In addition, in the jig body 2 of this embodiment, the cross bar 22 located furthest below the water in the resting state is located horizontally outside the gutter 140 (on the left side in FIG. 2). The rope 150 supported by the jig body 2 is wrapped around the cross bar 22 located furthest below the water in the resting state, and hangs down vertically below the gutter 140 horizontally outside the gutter 140 (on the left side in FIG. 2). In other words, the jig body 2 of this embodiment, including the cross bar 22 located furthest below the water in the resting state, covers the upper vertical side of the gutter 140, protecting the gutter 140 so that the rope 150 does not come into contact with the gutter 140 from above in the vertical direction.

As shown in Figures 1 and 2, the hook-shaped portion 3 of this embodiment includes an extension portion 24 connected to one end of the jig body 2, which is the end below the water when the jig is placed on the work surface, and a protruding portion 25 protruding from the other end of the extension portion 24 opposite the end connected to the jig body 2. As shown in Figure 2, the hook-shaped portion 3 of this embodiment extends in a hook shape by the extension portion 24 and the protruding portion 25 in a cross-sectional view (or side view) of the working jig 1.

The extension portion 24 is provided at one end of the jig body 2 in a direction inclined with respect to the longitudinal direction B of the jig body 2 described above. More specifically, the extension portion 24 of this embodiment extends vertically downward from the collective mounting surface 6 of the jig body 2 in the mounted state. Furthermore, the extension portion 24 of this embodiment extends vertically downward on the outdoor side of the gutter 140 in the mounted state. By providing such an extension portion 24, the side of the gutter 140 is covered by the extension portion 24, and the rope 150 suspended along the sloped roof surface 101 can be prevented from contacting the gutter 140. More specifically, in the extension portion 24 of this embodiment, the presence of the extension crosspiece 28 described later can prevent the rope 150 from contacting the side of the gutter 140.

In addition, the extension portion 24 of this embodiment is rotatably connected to one end of the jig body 2. More specifically, the extension portion 24 of this embodiment is supported by a rotation axis whose central axis extends in the width direction C, and is rotatable around this rotation axis. That is, as shown in an enlarged view in the lower dashed circle frame of FIG. 2, the inclination angle θ of the extension portion 24 of this embodiment with respect to the longitudinal direction B is adjustable. More specifically, the extension portion 24 of this embodiment includes an axis member 26 as a rotation axis attached to each of the multiple (two in this embodiment) side members 21 of the jig body 2, multiple (two in this embodiment) extended side members 27 rotatably attached to each axis member 26, and an extended horizontal bar 28 connecting the tip ends of the multiple extended side members 27. Therefore, the above-mentioned inclination angle θ is adjusted by rotating the extended side member 27 around the axis member 26. Note that the axis member 26 may be formed integrally with the side member 21.

In other words, the hook-shaped portion 3 of this embodiment is equipped with an angle adjustment mechanism 7 that can adjust the inclination angle θ relative to the jig body 2. The angle adjustment mechanism 7 of this embodiment is composed of an axis member 26 and an extension side member 27 that is rotatably attached via this axis member 26. However, the configuration of the angle adjustment mechanism 7 is not limited to the configuration of this embodiment. By providing the angle adjustment mechanism 7, for example, the inclination angle θ can be adjusted to correspond to the shape of the eaves.

The protruding portion 25 protrudes in the thickness direction D of the extension portion 24. The tip of the protruding portion 25 abuts against the outer wall 110. In other words, the positioning portion 42 of this embodiment is formed by the tip of the protruding portion 25 of the hook-shaped portion 3. Here, the thickness direction D of the extension portion 24 means the thickness direction of a virtual plate material when the internal space of the rectangular frame-shaped extension portion 24 composed of the multiple extension side members 27 and the extension horizontal bars 28 is assumed to be filled with a substance. In this embodiment, the protruding amount of the protruding portion 25 in the thickness direction D of the extension portion 24 is adjustable. In other words, the protruding portion 25 of this embodiment includes a support portion 29 protruding in the thickness direction D from the extension horizontal bars 28 of the extension portion 24, and a movable portion 30 that can be extended in the thickness direction D relative to the support portion 29. In the protruding portion 25 of this embodiment, the amount of protrusion in the thickness direction D can be adjusted by adjusting the amount of protrusion of the movable portion 30 relative to the support portion 29. Note that the movable portion 30 of this embodiment has a circular plate-shaped tip flange portion on the tip side of the shaft portion that fits into the support portion 29, and the tip of the protruding portion 25 of this embodiment described above is formed by the tip plane of the tip flange portion of the movable portion 30.

The hook-shaped portion 3 of this embodiment is provided with a length adjustment mechanism 8 capable of adjusting the extension length. As shown in an enlarged view within the lower dashed circle in FIG. 2, the "extension length" in this embodiment is the total length of the hook-shaped portion 3 extending in a hook-like shape, as shown in FIG. 2, and more specifically, means the total length L of the extension portion 24 and the protruding portion 25. The length adjustment mechanism 8 of this embodiment is composed of the support portion 29 and the movable portion 30 described above. However, the configuration of the length adjustment mechanism 8 is not limited to the configuration of this embodiment. By providing the length adjustment mechanism 8, the protruding portion 25 can be more reliably abutted against the exterior wall 110 regardless of the shape and dimensions of the eaves.

Finally, a method for installing the work jig 1 of this embodiment on the sloped roof surface 101 of the sloped roof portion 121 will be described. Figure 3 is a perspective view showing the state in which the work jig 1 is in the middle of being installed on the sloped roof surface 101. Note that Figure 3 shows the state in which the buffer mat 4 has already been placed on the sloped roof surface 101, and a tensile force toward the water side is applied to the buffer mat 4 using a mooring rope as a tensile member 32 moored to the cross member 138.

The working jig 1 shown in FIG. 3 is placed on the sloped roof surface 101 with the top and bottom sides reversed from the placement state shown in FIG. 1. In other words, the working jig 1 is placed on the sloped roof surface 101 with the collective support surface 5 of the jig body 2 (see the upper dashed circle in FIG. 2) facing downward so as to face the sloped roof surface 101. In this state, the working jig 1 is lowered from the above-water side to the below-water side while sliding the collective support surface 5 of the jig body 2 on the buffer mat 4. In this way, the hook-shaped part 3 extending from the jig body 2 toward the collective placement surface 6 side in the thickness direction E of the jig body 2 perpendicular to the longitudinal direction B and the width direction C can be prevented from getting caught on the sloped roof surface 101 or the buffer mat 4. Therefore, damage to the sloped roof surface 101 or the buffer mat 4 can be prevented. The hook-shaped portion 3 shown in FIG. 3 is adjusted by the angle adjustment mechanism 7 (see the lower dashed circle in FIG. 2) so that the extension portion 24 is approximately flush with the jig body 2, that is, so that the inclination angle is zero, but the extension portion 24 may be inclined toward the collective mounting surface 6 in the state shown in FIG. 3. Furthermore, the hook-shaped portion 3 may be configured to rotate relative to the jig body 2 under its own weight.

Then, when the hook-shaped portion 3 reaches further outward than the sloped roof surface 101 in a plan view (to the left in FIG. 2) and further outward than the gutter 140 in a plan view (to the left in FIG. 2), the top and bottom surfaces of the working jig 1 are flipped over. That is, the working jig 1 is flipped over so that the collective placement surface 6 of the jig body 2 faces downward to face the sloped roof surface 101, and the collective support surface 5 of the jig body 2 faces upward. At this time, since the hook-shaped portion 3 is on the outside of the sloped roof surface 101 and the gutter 140 in a plan view (to the left in FIG. 2), it does not interfere with the sloped roof surface 101 and the gutter 140 during the flipping operation.

While performing the above-mentioned operations of moving the work jig 1 below the water on the sloped roof surface 101 and turning the top and bottom surfaces of the work jig 1 upside down on the sloped roof surface 101, the work jig 1 is temporarily secured to the cross member 138 using a tether rope as a tension member 31. This prevents the work jig 1 from accidentally falling during the above-mentioned operations.

After the above-mentioned turning over operation is completed, the hook-shaped portion 3 of the work jig 1 is abutted against the exterior wall 110, and the jig body 2 is anchored to the cross member 138 using a tether rope as a tension member 31. In this way, the work jig 1 of this embodiment can be installed on the sloped roof surface 101.

In this way, by installing the work tool 1 on the building 100, the worker can clean, inspect, and repair the exterior of the building 100, such as the roof material 132 and the exterior wall material 120 of the building 100, by rope work at a height. In addition, by using the work tool 1 of this embodiment, even if a gutter 140 is provided on the underwater side of the sloped roof surface 101, the exterior wall material 120 located vertically below the gutter 140 can be cleaned, inspected, repaired, etc. by rope work at a height using the rope 150 without crushing the gutter 140 with the rope 150. Cleaning, inspection, and repair by rope work at a height include various cleaning, inspection, and repair of the exterior of the building 100, such as cleaning and inspection of the roof material 132 of the sloped roof surface 101, replacement as one aspect of repairing the roof material 132, cleaning and inspection of the exterior wall material 120 of the exterior wall 110, and surface painting as one aspect of repairing the exterior wall material 120.

The protective device, cleaning method, inspection method, and repair method according to the present invention are not limited to the configurations and processes specifically shown in the above-mentioned embodiment, and various modifications, changes, and combinations are possible without departing from the scope of the claims. For example, in the above-mentioned embodiment, the working tool 1 is illustrated as a protective device that protects the gutter 140 provided on the underwater side of the sloped roof portion 121, but the protective device may be a protective device that protects a gutter provided in a different position, and the position at which the gutter is provided is not particularly limited. Therefore, it may be a protective device that protects a gutter provided on the outer edge of a roof that has a non-sloped roof surface. In other words, it may be a protective device that protects a gutter when hanging a rope 150 from a roof that has a non-sloped roof surface.

The present invention relates to a protective device, a method for cleaning the exterior of a building, a method for inspecting the exterior of a building, and a method for renovating the exterior of a building.

1: Work tool (protective device)
2: Jig body 3: Hook-shaped portion 4: Cushioning mat 5: Collective support surface 6: Collective placement surface 7: Angle adjustment mechanism 8: Length adjustment mechanism 11: Rope support portion 21: Side material 21a: Support surface 21b: Placement surface 22: Cross bar (rope support portion)
22a: Movement restriction portion 23: Opening 24: Extension portion 25: Protruding portion 26: Axial member 27: Extended side member 28: Extended horizontal beam 29: Support portion 30: Movable portion 31, 32: Tensile member 41: Protective portion 42: Positioning portion 43: Fixed portion 100: Building 101: Sloped roof surface 110: Exterior wall 112: Roof 120: Exterior wall material (outside of the building)
121: Sloped roof portion 122: Flat roof portion 122a: Rising portion 123: Ridge beam 124: Purlin beam 125: Girder beam 126: Sloped beam 131: Roof slab material of the sloped roof portion 132: Roof material of the sloped roof portion (outside of the building)
133: Roof slab material for flat roof portion 134: Base material for flat roof portion 135: Waterproof sheet for flat roof portion 136: Cap 137: Protrusion 138: Cross member 139: Cap protective cover 140: Gutter 140a: Water receiving portion 150: Rope A: Incline direction B: Longitudinal direction of jig body C: Width direction of jig body D: Thickness direction of extension portion E: Thickness direction of jig body L: Extension length of hook-shaped portion

Claims (10)

A gutter protection device comprising:
A protective portion for protecting the gutter;
A positioning portion that abuts against an exterior wall of a building vertically below the gutter and positions the position of the protection portion relative to the gutter;
a fixing portion that fixes the protection portion, which is positioned by the positioning portion and is not supported on the ground, to the building vertically above the gutter ;
A protective device wherein the fixing portion is constituted by a tool body that can be placed on the sloped roof surface of the building . a hook-shaped portion extending from the jig body in a hook-like shape, which abuts against the exterior wall of the building vertically below the gutter located on the water side of the sloped roof surface when the jig body is placed on the sloped roof surface;
The protective portion is composed of at least one of the jig body and the hook-shaped portion,
The protection device according to claim 1 , wherein the positioning portion is constituted by the hook-shaped portion. The protective device according to claim 2, wherein the hook-shaped portion is provided with a length adjustment mechanism that allows the extension length to be adjusted. The protective device according to claim 2 or 3, wherein the hook-shaped portion is provided with an angle adjustment mechanism that can adjust the inclination angle relative to the jig body. The protective device according to any one of claims 2 to 4, wherein the jig body is provided with a rope support part on its upper surface located vertically upward in the above-mentioned state, capable of supporting a rope suspended along the above-water side to the below-water side of the sloped roof surface. The jig body is
A plurality of side members arranged at a distance from each other and extending along a predetermined direction;
A plurality of horizontal beams are installed between the plurality of side members and spaced apart in the predetermined direction,
The protection device according to claim 5 , wherein the rope support portion is constituted by the plurality of cross bars. The protective device according to claim 6, wherein the fixing portion is constituted by the cross bar. A cleaning method for cleaning the exterior of a building by installing a protective device according to any one of claims 1 to 7 in the building. An inspection method for inspecting the exterior of a building by installing a protective device according to any one of claims 1 to 7 in the building. A method for renovating an exterior of a building by installing a protection device according to any one of claims 1 to 7 in the building.

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