Three-dimensional veranda bridge installation method and veranda bridge

Abstract

To provide a veranda installation method that enables a worker to install a veranda bridge regardless of the positional relationship between the veranda and a temporary scaffold. [Solution] The three-dimensional balcony bridge installation method includes the step of horizontally fixing a single pipe 50 to a temporary scaffolding 100 using an orthogonal clamp 60 at a height (vertical direction) that is adjustable according to the height of the horizontal plane of a gangplank 20 provided on the balcony bridge 10. The three-dimensional balcony bridge installation method further includes the step of fastening a hook 40 provided on the balcony bridge 10 at a position in the horizontal direction (left and right direction) of the horizontally fixed single pipe 50. Furthermore, the gangplank 20 and hook 40 of the balcony bridge 10 are slidable in the front-to-back direction according to the distance to the single pipe 50. As a result, the three-dimensional balcony bridge installation method makes it possible to freely adjust the attachment position of the balcony bridge 10 to the temporary scaffolding 100 in three axial directions.

Description

[Technical Field]

[0001] The present disclosure relates to a three-dimensional veranda bridge installation method and a veranda bridge. [Background technology]

[0002] When painting the exterior walls of buildings with balconies, such as apartment buildings, workers must move back and forth between temporary scaffolding and the balconies. Temporary scaffolding is a type of scaffolding that is temporarily set up along the exterior walls of buildings and used by workers.

[0003] Patent Documents 1, 2, and 3 disclose a balcony bridge for moving between temporary scaffolding and a balcony. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-006286 [Patent Document 2] Japanese Patent Application Publication No. 9-137600 [Patent Document 3] Japanese Patent Application Publication No. 11-071895 Summary of the Invention [Problem to be solved by the invention]

[0005] The conventional balcony bridges disclosed in Patent Documents 1 to 3 are difficult to install and remove, so workers often skip installing them. As a result, in the condominium renovation industry, workers routinely use ordinary stepladders or jump from one step to the other instead of using balcony bridges. This poses a major safety problem.

[0006] Here, we explain why installing conventional balcony bridges is difficult. There are three main floor heights for temporary scaffolding: 1.7m, 1.8m, and 1.9m. In contrast, the floor height of an apartment building is regulated by the Building Act and is generally around 3m. Therefore, the floor height of the temporary scaffolding's walkway and the floor height of the apartment building's balcony or walkway are rarely the same across multiple floors.

[0007] Furthermore, when temporary scaffolding is set up along the wall of an apartment building, the horizontal distance between the apartment building and the temporary scaffolding is approximately 30 cm to 50 cm, and is not necessarily constant.

[0008] For these reasons, when building a balcony bridge, the difference in floor height and the required length of the balcony bridge's gangway can take on various values.

[0009] Conventional balcony bridges cannot cope with such situations, and it is virtually impossible to install a balcony bridge.

[0010] Furthermore, because conventional balcony bridges are time-consuming to remove, they may not be removed every day. This means that the balcony bridges may remain installed even when work is suspended, such as at night. This is also problematic from the perspective of crime prevention.

[0011] The Labor Standards Inspection Office, the supervisory authority, faces the problem of being unable to proactively inspect the building because if illegal crossing is discovered during an inspection, it will be forced to stop construction on the apartment building.

[0012] In addition, construction companies want to develop balcony bridges that can accommodate the difference in floor height between the scaffolding walkway and the balcony floor to ensure worker safety.

[0013] As mentioned above, currently, workers are jumping between temporary scaffolding and the balcony of an apartment building, which is against the Industrial Safety and Health Act. This has resulted in many accidents on a daily basis, including damage to the balcony railings and accidents caused by stepladders falling over.

[0014] The present disclosure aims to provide a three-dimensional balcony bridge installation method that allows workers to install balcony bridges more easily. [Means for solving the problem]

[0015] One aspect of the three-dimensional balcony bridge installation method according to the present disclosure is a three-dimensional balcony bridge installation method that makes the attachment position of the balcony bridge to the temporary scaffolding freely adjustable in three axial directions, and includes the steps of: horizontally fixing a single pipe to the temporary scaffolding using an orthogonal clamp at a freely adjustable height (in the up-down direction) according to the height of the horizontal plane of the gangway board provided on the balcony bridge; tying hooks provided on the balcony bridge at freely adjustable positions in a first horizontal direction (left-right direction) along the horizontally fixed single pipe; and fastening hooks provided on the balcony bridge at freely adjustable positions in a second horizontal direction (front-back direction) perpendicular to the first horizontal direction, from the gangway board provided on the balcony bridge. Protruding through the arm and sliding the hooks apart.

[0016] In addition, one aspect of the balcony bridge according to the present disclosure is: A three-dimensional balcony bridge that allows the attachment position of the balcony bridge to the temporary scaffolding to be freely adjusted in three axes. Gangplank and The height is adjustable according to the height of the horizontal plane of the plank, A single pipe fixed horizontally to the temporary scaffolding At a first horizontally free position along the single pipe Binding hooks and an arm to which The hook is provided with: A second horizontal direction perpendicular to the first horizontal direction In the front-rear direction, from the gangway The arm extends outwards It is characterized by being slidable in the direction of separation. [Effects of the Invention]

[0017] According to the three-dimensional balcony bridge installation method disclosed herein, the following three features allow the balcony bridge to be attached to the temporary scaffolding at any position.

[0018] First, the members to which the hooks of the balcony bridge are attached are made of single pipes, which can be fixed horizontally at any height on the temporary scaffolding using orthogonal clamps.

[0019] This allows the mounting position to be freely positioned in the vertical direction.

[0020] Secondly, the hooks of the balcony bridge can be tied to the single pipe at any position.

[0021] This allows the mounting position to be freely positioned in the left and right direction.

[0022] Third, the hook of the balcony bridge is fixed to an arm whose length can be adjusted by sliding it horizontally relative to the gangway.

[0023] This allows the mounting position to be freely positioned in the front-rear direction.

[0024] As a result of the above, the attachment position of the balcony bridge to the temporary scaffolding can be freely adjusted both horizontally and vertically.

[0025] Therefore, according to the above-mentioned three-dimensional balcony bridge installation method, it is possible to install a balcony bridge regardless of the positional relationship between the balcony floor and the temporary scaffolding.

[0026] This makes it easier for workers to install the balcony bridge.

[0027] Furthermore, in recent years, workers have been wearing safety belts (full harnesses) to prevent falls at all times while working, and by having each worker carry the above-mentioned balcony bridge, it will be possible to carry out construction safely and contribute to respecting human life.

[0028] Furthermore, compared to conventional balcony bridges, the balcony bridge has fewer parts and is lighter, allowing workers to handle it as if it were their own extension during the approximately two-week construction period inside the balcony.

[0029] In addition, with the development of this safe balcony bridge, supervisory authorities will be able to inspect apartment building renovation sites without any hindrance. [Brief explanation of the drawings]

[0030] [Figure 1] FIG. 1 is a diagram illustrating how a balcony bridge according to an embodiment is installed. [Figure 2] FIG. 2 is a flowchart illustrating a three-dimensional veranda bridge installation method according to the embodiment. [Figure 3] FIG. 3 is a diagram illustrating the installation of the balcony bridge in step S102 of FIG. [Figure 4] FIG. 4 is a diagram showing an orthogonal clamp. [Figure 5] FIG. 5 is a diagram illustrating a sliding mechanism of the hook according to the embodiment. [Figure 6] FIG. 6 is a schematic diagram showing the difference in height between the balcony and the temporary scaffolding according to the embodiment. [Figure 7] FIG. 7 is a diagram illustrating the state when the balcony bridge according to the embodiment is carried. DETAILED DESCRIPTION OF THE INVENTION

[0031] (Embodiment) Below, embodiments of the three-dimensional veranda bridge installation method and veranda bridge according to the present disclosure will be described in detail with reference to the drawings. Note that each of the embodiments described below represents a preferred specific example of the present disclosure. The numerical values, components, component placement and connection configurations, steps, step order, etc. shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Furthermore, among the components in the following embodiments, components not recited in the independent claims will be described as optional components constituting a preferred embodiment.

[0032] It should be noted that the drawings are schematic diagrams and are not necessarily strict illustrations. In addition, in the drawings, substantially the same components are denoted by the same reference numerals, and overlapping descriptions may be omitted or simplified.

[0033] Furthermore, unless otherwise specified, ordinal numbers such as "first" and "second" in this disclosure do not refer to the number or order of components, etc., but are used for the purpose of avoiding confusion and distinguishing between components, etc. of the same type.

[0034] Furthermore, in this disclosure, terms indicating relationships between elements, such as "same," as well as numerical values ​​and numerical ranges, are not expressions that express only the strict meaning, but are expressions that mean that a substantially equivalent range is included, for example, a difference of about several percent (e.g., 5%). For example, "horizontal direction" does not only mean a perfectly horizontal direction, but also means that an error of about several percent that occurs during manufacturing or arrangement is included.

[0035] In addition, in this disclosure, "up-down direction" means the vertical direction. In this disclosure, "up" means vertically upward, and "down" means vertically downward. In this disclosure, "left-right direction" means the horizontal direction in which the wall surface of a building extends. Furthermore, in this disclosure, "front-rear direction" means the horizontal direction perpendicular to the wall surface of a building. "Forward direction" means the direction from the building toward the temporary scaffolding, and "rear direction" means the direction from the temporary scaffolding toward the building.

[0036] [overview] First, an overview of the balcony bridge according to the embodiment will be described. Fig. 1 is a diagram illustrating how the balcony bridge 10 according to the embodiment is installed.

[0037] As shown in FIG. 1, the balcony bridge 10 is spanned between the temporary scaffolding 100 and the balcony 200.

[0038] A worker walks on the gangway 20 and ladder member 30 of the spanning balcony bridge 10 to move between the temporary scaffolding 100 and the balcony 200. The worker may be, for example, a painter who is repairing the exterior walls of an apartment building.

[0039] The balcony bridge 10 comprises a gangway plank 20, ladder members 30, hooks 40, and handrail members 70. Furthermore, a single pipe 50 and an orthogonal clamp 60 are used to install the balcony bridge 10. Specifically, the balcony bridge 10 is spanned by fastening the hooks 40 to the single pipe 50 fixed to the temporary scaffolding 100. Here, the single pipe 50 is attached to the support 110 on the balcony side of the temporary scaffolding 100 using the orthogonal clamp 60.

[0040] The gangway plank 20 is a planar member on which workers walk. The gangway plank 20 is formed in a rectangular shape in a plan view. The dimensions of the gangway plank 20 are, for example, 500 mm in width and 500 mm in depth, but are not limited to these. The width of the gangway plank 20 only needs to be long enough for workers to move across, and the depth of the gangway plank 20 only needs to be long enough to fill the distance between the temporary scaffolding 100 and the balcony 200.

[0041] The gangway plank 20 is made of, for example, expanded metal wire netting (so-called mesh wire netting). This reduces the weight of the balcony bridge 10 and makes it less slippery for workers to walk across the balcony bridge 10. The gangway plank 20 is formed by welding an aluminum expanded metal wire netting to an aluminum frame. The gangway plank 20 includes a tube 22 for connecting the handrail member 70.

[0042] The ladder member 30 is a ramp on which workers pass. The ladder member 30 is connected to the end of the gangway 20 on the balcony 200 side. The number of rungs provided on the ladder member 30 is, for example, three, but is not limited to this. The width of the rung is, for example, 5 cm. The ladder member 30 is made of, for example, an aluminum alloy. The length of the ladder member 30 is, for example, 1.3 m.

[0043] The ladder member 30 is provided with legs 31 whose length can be adjusted. The legs 31 are stored in the ladder member 30 and can be extended and retracted in the longitudinal direction of the ladder member 30. The upper limit of the length that the legs 31 can extend is, for example, 350 mm. The legs 31 are provided with a locking mechanism for fixing them in a state where they extend to a desired length. This allows the worker to use the legs 31 to adjust the length of the ladder member 30.

[0044] The gangway plank 20 and the ladder member 30 are foldably connected. The balcony bridge 10 is equipped with a mechanism for fixing the angle formed between the gangway plank 20 and the ladder member 30 in a state where it is widened to its maximum. The maximum angle is, for example, 115 degrees. The balcony bridge 10 is installed and used in a state where the angle formed between the gangway plank 20 and the ladder member 30 is fixed.

[0045] The hook 40 is a member for fixing the balcony bridge 10 to the temporary scaffolding 100. The hook 40 is formed, for example, from steel. The hook 40 is fastened to a single pipe 50 fixed to a support 110 on the balcony side of the temporary scaffolding 100. The hook 40 is slidably connected to the end of the gangway 20 on the side of the temporary scaffolding 100. In other words, the protrusion length of the hook 40 can be adjusted in the front-to-rear direction.

[0046] The hook 40 is fastened to a single pipe 50 fixed to a support 110 on the balcony side of the temporary scaffolding 100.

[0047] The hook 40 has a curved portion at its tip, and the balcony bridge 10 is secured to the single pipe 50 by hooking the single pipe 50 onto the inside of the curved portion. The hook 40 also has a stopper on its vertically lower side, and by having the stopper protrude below the single pipe 50, it prevents the hook 40 from accidentally coming off the single pipe 50. Furthermore, such a hook 40 can be easily fastened to the single pipe 50.

[0048] Furthermore, the hook 40 can adjust the binding position by moving the hook 40 in the horizontal direction (the direction in which the single pipe 50 extends) while it is bound to the single pipe 50.

[0049] The single pipe 50 is a single pipe fixed to the balcony side of the temporary scaffolding 100. More specifically, the single pipe 50 is fixed horizontally to at least two balcony side supports 110 of the temporary scaffolding 100 using orthogonal clamps 60. The single pipe 50 is made of, for example, an aluminum alloy. The length of the single pipe 50 is, for example, 2 m. The single pipe 50 is a component prepared for the purpose of installing the balcony bridge 10.

[0050] The orthogonal clamp 60 is a component that secures and fastens two single pipes together at a right angle. In other words, the orthogonal clamp 60 can maintain the crossing angle of the single pipes at 90 degrees. The orthogonal clamp 60 secures and fastens the balcony side support 110 and the single pipe 50 at a right angle.

[0051] As shown in FIG. 1, the length of the single pipe 50 is longer than the distance between the adjacent balcony-side supports 110, and the single pipe 50 has a protruding portion when fixed by the orthogonal clamp 60.

[0052] The handrail member 70 is a handrail that prevents workers from falling from the balcony bridge 10. The handrail member 70 is formed, for example, from an aluminum alloy. The handrail member 70 is shaped, for example, in a U-shape with a middle rail. When the handrail member 70 is attached to the balcony bridge 10, the height of the upper end of the handrail member 70 from the floor of the gangway plank 20 is, for example, 90 cm, and the corresponding height of the middle rail of the handrail member 70 is 45 cm. The middle rail of the handrail member 70 can further prevent workers from falling from the balcony bridge 10, contributing to improved safety. One handrail member 70 is provided on each of the right and left sides of the gangway plank 20.

[0053] The handrail member 70 is detachably connected to the gangway plank 20. For example, the handrail member 70 is connected by fitting an end of the handrail member 70 into a tube 22 provided on the gangway plank 20. The method of connecting the handrail member 70 to the gangway plank 20 or the ladder member 30 is not particularly limited as long as it is detachable.

[0054] As described above, the gangplank 20, ladder member 30, and handrail member 70 of the balcony bridge 10 are formed from an aluminum alloy. This allows the weight of the balcony bridge 10 to be, for example, 10 kg or less. More specifically, the weight of the balcony bridge 10 can be 7 kg or less. This is extremely light compared to conventional balcony bridges 10, making it easier for workers to handle the balcony bridge 10 and improving the ease of transporting and installing the balcony bridge 10.

[0055] The temporary scaffolding 100 is a scaffolding that is temporarily set up along the outer wall of a building. The type of temporary scaffolding is not particularly limited, and may be bamboo scaffolding, frame scaffolding, or next-generation scaffolding. The temporary scaffolding 100 according to the embodiment includes a balcony-side support 110, an outer support 120, a first crosspiece 130, a second crosspiece 131, a scaffolding board 140, a diagonal brace 150, and an arm 160. The scaffolding is set up temporarily by connecting the scaffolding as appropriate.

[0056] The balcony-side support 110, outer support 120, first crosspiece 130, second crosspiece 131, scaffolding board 140, diagonal brace 150, and bracket 160 that make up the temporary scaffolding 100 are formed, for example, from steel.

[0057] The temporary scaffolding 100 is temporarily erected by appropriately connecting the above-mentioned components. For example, as shown in FIG. 1 , the balcony-side support 110 and the outer support 120 are erected vertically. The balcony-side support 110 and the outer support 120 are realized, for example, using tubular material with a diameter of 4.86 cm or 4.27 cm. Adjacent balcony-side support 110 and outer support 120 are connected by arms 160. The scaffolding boards 140 are equipped with gripping metal fittings, and are connected by fastening the arms 160 using the gripping metal fittings. The scaffolding boards 140 form the floor of the walkway of the temporary scaffolding 100. The braces 150 are engaged in an X-shape between adjacent balcony-side support 110 or adjacent outer support 120, thereby improving the strength of the temporary scaffolding 100.

[0058] The distance between adjacent balcony posts 110 is, for example, 1.8 m. The length of the bracket 160 is, for example, 0.6 m.

[0059] The first crosspiece 130 is a single pipe fixed approximately horizontally between adjacent balcony-side supports 110. The first crosspiece 130 is fixed, for example, at a position 0.9 m above the scaffolding board 140. The first crosspiece 130 is fixed, for example, using a clamp.

[0060] Second crosspiece 131 is a single pipe fixed approximately horizontally between adjacent balcony-side supports 110. Second crosspiece 131 is fixed, for example, at a position 0.45 m above scaffolding board 140. Second crosspiece 131 is fixed, for example, using a clamp.

[0061] The first crosspiece 130 and the second crosspiece 131 can prevent accidents such as falling from the temporary scaffolding 100.

[0062] A building may have multiple verandas 200 as outdoor spaces. For example, if the building is an apartment building, each of the apartment buildings may have at least one veranda 200. The veranda 200 includes a floor 210 and a fence 220.

[0063] Floor surface 210 is a substantially horizontal surface. Fence 220 is a fence to prevent residents from falling off balcony 200. The height of fence 220 from floor surface 210 is, for example, 1.1 m, but may be 1.2 m or 1.3 m. The width of fence 220 is approximately 12 cm to 18 cm.

[0064] The temporary scaffolding 100 is temporarily set up so that the distance between the temporary scaffolding 100 and the balcony 200 (more specifically, the distance between the support 110 on the balcony side and the outer surface of the fence 220) is approximately 0.3 m to 0.5 m.

[0065] A worker uses the spanned balcony bridge 10 to move back and forth between the temporary scaffolding 100 and the balcony 200. More specifically, the worker uses the balcony bridge 10 to move back and forth between the scaffolding board 140 and the floor surface 210.

[0066] [Three-dimensional balcony bridge installation method] A three-dimensional veranda bridge installation method according to an embodiment will be described below. Fig. 2 is a flowchart illustrating a three-dimensional veranda bridge installation method according to an embodiment.

[0067] First, the height at which the single pipe 50 is to be fixed is determined (S101). The worker determines the height at which the single pipe 50 is to be fixed to be the same height as the height at which the crossing plank 20 is to be installed. The worker determines the height at which the single pipe 50 is to be fixed to a height that is flexible and depends on the horizontal plane of the crossing plank 20.

[0068] This allows the mounting position of the balcony bridge 10 to be freely positioned in the vertical direction.

[0069] The height at which the gangway plank 20 is to be installed may be determined based on the height of the floor surface 210 of the balcony 200, and for example, the height at which the gangway plank 20 is to be installed may be 1.3 m vertically upward from the floor surface 210.

[0070] Furthermore, the length of the ladder member 30 of the balcony bridge 10 can be adjusted by changing the overhang length of the leg 31. By adjusting the length of the ladder member 30, the worker can adjust the height at which the gangway 20 and hook 40 are installed, i.e., the height at which the single pipe 50 is fixed, within the range allowed by the overhang length of the leg 31.

[0071] Next, the single pipe 50 is fixed horizontally at the determined height using the orthogonal clamps 60 (S102). Specifically, the worker fixes the single pipe 50 horizontally to the temporary scaffolding 100 using the orthogonal clamps 60 at a height that is flexible according to the height of the horizontal surface of the gangway 20 provided on the balcony bridge 10.

[0072] More specifically, first, the worker secures orthogonal clamps 60 to at least two balcony-side supports 110 so that the single pipe 50 can be secured at the height determined in step S101. At this time, the orthogonal clamps 60 are secured so that the single pipe 50 is connected to the balcony side of the balcony-side supports 110. This maintains space within the temporary scaffolding 100. Next, the worker secures the single pipe 50 to the orthogonal clamps 60 secured to the balcony-side supports 110. Figure 3 is a diagram illustrating the installation of the balcony bridge 10 in step S102 of Figure 2. As shown in Figure 3, the single pipe 50 is secured to the balcony-side supports 110 of the temporary scaffolding 100 using the orthogonal clamps 60. As shown in Figure 3, the single pipe 50 can be secured to any position in the height direction relative to the balcony-side supports 110 of the temporary scaffolding 100.

[0073] FIG. 4 is a diagram showing the orthogonal clamp 60. As shown in FIG. 4, the orthogonal clamp 60 includes two clamps (clamp 61 and clamp 62). The central axes of clamp 61 and clamp 62 are perpendicular to each other. Clamp 61 can be opened by loosening nut 63, and the balcony-side support 110 can be fixed by tightening nut 63. Clamp 62 can be opened by loosening nut 64, and the single pipe 50 can be fixed by tightening nut 64.

[0074] That is, clamp 61 detachably holds balcony-side support 110, and clamp 62 detachably holds pipe 50. In this way, orthogonal clamp 60 allows pipe 50 and balcony-side support 110 to be perpendicular to each other, tightly fastening and fixing balcony-side support 110 and pipe 50 at a right angle. Because balcony-side support 110 is erected vertically, pipe 50 can be fixed horizontally.

[0075] After the single pipe 50 is fixed, the position where the hook 40 is to be fastened is determined on the single pipe 50 (S103). Specifically, the worker determines the position where the hook 40 is to be fastened at a position freely adjustable in the horizontal direction of the single pipe 50 fixed horizontally.

[0076] This allows the mounting position of the balcony bridge 10 to be freely positioned in the left-right direction.

[0077] Next, the extension length of the hook 40 is determined (S104). The gangway plank 20 and the hook 40 can be slid in the front-to-rear direction. The worker determines the extension length of the hook 40 by adjusting the amount of sliding depending on the distance to the single pipe 50. The worker slides the hook 40 in an extended state up to the determined extension length of the hook 40. As a result, the hook 40 slides horizontally in a direction away from the gangway plank 20 provided on the balcony bridge 10.

[0078] FIG. 5 is a diagram illustrating the slide mechanism of the hook 40 according to the embodiment.

[0079] As shown in FIG. 5, the hook 40 is fixed to the arm 41 by welding or the like. The arm 41 is made of steel. The arm 41 is stored retractably in the frame of the gangway plank 20. In other words, by retracting or retracting the arm 41, the length of the balcony bridge 10 in the fore-and-aft direction can be adjusted. The upper limit of the protruding length of the hook 40 is, for example, 150 mm.

[0080] As shown in Fig. 5, slits 21 are provided on the outer side surface of the frame of the gangway plank 20. Bolts 42 are fixed to the arm 41 in advance at two locations. The two bolts 42 fixed to the arm 41 in advance protrude from the slits 21. By having the bolts 42 protruding from the slits 21, the upper limit of the protrusion length of the hook 40 is determined, and separation of the arm 41 and the gangway plank 20 can be prevented.

[0081] The distance between the two points where the bolts 42 are fixed is, for example, 100 mm. By fixing the bolts 42 at two points in this way, it is possible to increase resistance to vertical loads.

[0082] The worker uses a wrench to fasten the bolt 42 to the nut and washer 43. This fixes the extension length of the arm 41. The worker fixes the extension length of the right arm 41 and the extension length of the left arm 41 separately.

[0083] This allows the installation position of the balcony bridge 10 to be freely positioned in the front-to-rear direction.

[0084] Finally, the hooks 40 are fastened to the positions determined in S103 (S105), thereby installing the balcony bridge 10. According to the three-dimensional balcony bridge installation method described above, the balcony bridge 10 can be installed regardless of the positional relationship between the balcony floor surface 210 and the temporary scaffolding 100, making it easier for workers to install the balcony bridge 10.

[0085] At this time, the balcony bridge 10 is installed with the single pipe 50 and the gangway plank 20 spaced apart by the protruding length of the hook 40 determined in step S104. In other words, the gangway plank 20 is fixed in a state in which the hook 40 protrudes (slides to protrude) from the gangway plank 20 in the direction of the single pipe 50. Because the entire gangway plank 20 of the balcony bridge 10 is maintained in this way on the balcony side of the single pipe 50, it will not protrude into the passageway of the temporary scaffolding 100 and obstruct the passage of workers.

[0086] This also makes it possible to install the balcony bridge 10 even when the length of the gangway plank 20 in the front-to-rear direction is shorter than the distance to the temporary scaffolding 100. Therefore, it becomes possible to further shorten the length of the gangway plank 20 in the front-to-rear direction, which contributes to making the balcony bridge 10 smaller and lighter.

[0087] [Other features] As described above, the installation position of the balcony bridge 10 according to the embodiment is flexible. In addition, the height of the scaffolding boards 140 of the temporary scaffolding 100 and the height of the balcony floor surface 210 are rarely the same across multiple floors.

[0088] The balcony bridge 10 according to the embodiment can be installed so that workers can cross safely regardless of the difference in height between the scaffolding board 140 and the balcony floor surface 210. FIG. 6 is a schematic diagram showing the difference in height between the balcony 200 according to the embodiment and the temporary scaffolding 100. As shown in FIG. 6, the height of one story of the building 300 (i.e., the difference in height between the floor surface 210a of the balcony 200a and the floor surface 210b of the balcony 200b) is different from the height of one story of the temporary scaffolding 100 (i.e., the difference in height between the scaffolding board 140a and the scaffolding board 140b). Therefore, the difference in height between the balcony floor surface and the scaffolding boards can take on various values.

[0089] For example, consider the case of a difference in height between the scaffolding board 140a and the balcony floor surface 210a shown in Figure 6. In such a case, the difference in height between the height at which the single pipe 50 is fixed in step S102 and the height of the scaffolding board 140a becomes large. In such a case, workers can safely cross by entering and exiting the temporary scaffolding 100 from the next higher floor.

[0090] Furthermore, consider the case where there is a height difference between scaffolding board 140b and balcony floor surface 210b as shown in Figure 6. In such a case, first crosspiece 130b or second crosspiece 131b may already be fixed at the height at which single pipe 50 will be fixed, as determined in step S101. In such a case, the worker can install balcony bridge 10 using first crosspiece 130b or second crosspiece 131b that has already been fixed, without fixing single pipe 50.

[0091] Furthermore, the balcony bridge 10 according to the embodiment can be easily transported. Figure 7 is a diagram illustrating the state when the balcony bridge 10 according to the embodiment is being carried.

[0092] As shown in Figure 7(a), when the balcony bridge 10 is being carried, i.e., when it is not installed, it can be folded starting from the connection between the gangway 20 and the ladder member 30. By folding it in this way, the balcony bridge itself becomes easier to transport.

[0093] In this way, when the balcony bridge body is folded and transported, the three-dimensional balcony bridge installation method further includes a step of unfolding the folded gangway plank 20 and ladder member 30. The timing at which this step is performed is not particularly limited.

[0094] As shown in Figure 7(b), when the handrail member 70 is being carried, i.e., when it is not installed, it can be removed from the balcony bridge 10. By removing the handrail member 70 from the balcony bridge body in this way, the handrail member 70 becomes easier to transport.

[0095] Furthermore, when the handrail member 70 is removed and transported in this manner, the three-dimensional balcony bridge installation method further includes a step of connecting the handrail member 70 to at least one of the gangway plank 20 and the ladder member 30. The timing at which this step is performed is not particularly limited.

[0096] (Other embodiments) The three-dimensional balcony bridge installation method and balcony bridge according to the embodiment have been described above, but the present disclosure is not limited to the above embodiment.

[0097] For example, in the above embodiment, the balcony bridge is used to move between the temporary scaffolding and the balcony, but the balcony bridge may also be used to move between the temporary scaffolding and the exterior corridor of the building. The balcony bridge can be used to move between the temporary scaffolding and the outdoor space of the building.

[0098] This disclosure also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art would think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope of this disclosure. [Industrial Applicability]

[0099] The three-dimensional balcony bridge installation method disclosed herein can be used in tasks such as installing a balcony bridge between a balcony and temporary scaffolding during repair work on an apartment building. [Explanation of symbols]

[0100] 10 Veranda Bridge 20 Gangplank 21 Slit 30 Ladder members 31 Legs 40 Hook 41 Arm 42 volts 43 Nuts and washers 50 Single pipe 60 Orthogonal Clamp 61, 62 Clamp 63, 64 Nut 70 Handrail components 100 Temporary Scaffolding 110 Balcony side support 120 outer support 130, 130a, 130b First crosspiece 131, 131a, 131b 2nd crosspiece 140, 140a, 140b scaffolding boards 150 Braces 160 Arm 200, 200a, 200b veranda 210, 210a, 210b floor surface 220 Fence 300 Buildings

Claims

1. This is a three-dimensional veranda bridge installation method that allows the attachment position of the veranda bridge to the temporary scaffolding to be freely adjusted in three axial directions. A step of fixing the single pipe horizontally to the temporary scaffolding using an orthogonal clamp at a free height corresponding to the height of the horizontal plane of the crossing board provided on the balcony bridge; a step of fastening a hook provided on the balcony bridge at a position along the horizontally fixed single pipe in a first horizontal direction; and sliding the hook in a second horizontal direction perpendicular to the first horizontal direction, in a direction in which the hook protrudes and moves away from a gangway board provided on the balcony bridge via an arm. Three-dimensional balcony bridge installation method.

2. A three-dimensional balcony bridge in which the attachment position of the balcony bridge to the temporary scaffolding is made flexible in three axial directions, Gangplank and A single pipe is fixed horizontally to the temporary scaffolding using an orthogonal clamp at a freely adjustable height according to the height of the horizontal surface of the crossing plank, and an arm to which a hook is fixed for binding at a freely adjustable position in a first horizontal direction along the single pipe, The hook is slidable in a direction of protruding and moving away from the bridge plate via the arm in a front-rear direction, which is a second horizontal direction perpendicular to the first horizontal direction, depending on the distance to the single pipe. Veranda Bridge.

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