JP7660889B2 - Movable scaffolding installation structure - Google Patents

Description

The present invention relates to a structure for installing a mobile scaffold that can be installed inexpensively and easily even when the distance between adjacent buildings is small, and that can be used to repair, repair, and maintain the exterior walls, eaves gutters, and accessories of buildings without causing problems such as falls.

In recent years, existing buildings are constantly exposed to various abnormal weather conditions, and as a result of damage and deterioration of the roof surroundings, including the eaves gutters, there is a need to install new high-performance eaves gutters. When repairing, renovating, or maintaining the roof surroundings, such as the above example, of existing buildings such as houses, it is common to install scaffolding around the building and at the borders with neighboring houses prior to the various types of work.
That is, the actual renovation of a building first requires the installation of scaffolding around the building, which requires time, cost, and other issues that cannot be ignored or are difficult to adjust.

Since the scaffolding is installed by a contractor different from the contractor performing the repairs, etc., the schedule for the repairs, etc. had to be determined after waiting for the schedule for the scaffolding installation.
In addition, the scaffolding is set up by bringing parts (materials) according to the height and width of the building (renovation part) to the site, assembling these materials, and setting up the scaffolding to cover the construction area, so even though the materials themselves can be reused, the cost of setting up the scaffolding was not cheap. In other words, it was necessary to secure a place to temporarily store the huge amount of materials and a place to set up the scaffolding, but it was often difficult to secure such a place. Furthermore, especially when the boundary between adjacent houses was narrow, it was also necessary to take measures not to damage the garden equipment and trees of the neighboring houses.

As mentioned above, the conventional method of setting up scaffolding involves bringing parts and components to the site according to the height and width of the area to be renovated, assembling them, and setting up the scaffolding to cover the construction area, which can be problematic in terms of time and cost.

The present invention aims to propose an installation structure for a mobile scaffold that can be installed inexpensively and easily even when the distance between adjacent buildings is small, and that can be used to repair, repair, and maintain the exterior walls, eaves gutters, and accessories of buildings without causing problems such as falls.

The present invention has been proposed in view of the above, and relates to an installation structure for a movable scaffolding that can be changed in position along the outer wall surface of a building, comprising: an attachment body which is two or more linear safety belts whose base ends are attached to the building; two or more supports which have an upright portion, a horizontal portion, and a connecting portion which connects the two, which are fixed to the attachment body; a track body which is installed in an erected manner so as to straddle the supports perpendicularly and ensure sliding movement ; support arms whose ends are located within the track body; legs which extend vertically from the support arms; and a working base on which working scaffolding is integrally provided on the outside and inside of the legs, respectively.
The outside and inside of the legs are based on the legs arranged at a specified distance from the exterior wall surface of the building, with the building side being the inside and the opposite side being the outside.

The present invention also proposes an installation structure for a movable scaffold, characterized in that, in the installation structure, at least the work scaffold located on the inside of the leg is movable in the height direction relative to the leg.

The present invention also proposes an installation structure for a movable scaffold, characterized in that the track body and the end of the support arm positioned on the track body are two or more.

The installation structure for the movable scaffolding of the present invention is inexpensive and easy to install even when the distance between adjacent buildings is narrow, and does not cause problems such as falling when used. Workers riding on the working base that slides along the exterior wall surface of the building can change their working position as the construction work progresses.
Therefore, it can be applied extremely easily and inexpensively to the repair, maintenance, etc. of the exterior wall surfaces, eaves gutters, or accessories of buildings, without causing various problems related to construction and costs as in the past. For various construction works on the exterior wall surfaces of buildings, a work scaffold located exclusively on the inside of the legs can be used, and for various construction works on the eaves gutters, etc. of buildings, a work scaffold located exclusively on the outside of the legs can be used.

When at least the work scaffold located on the inside of the leg among the work scaffolds is movable in the height direction relative to the leg, construction of an exterior wall surface having a large height dimension can be more easily accomplished.

When there are two or more ends of the track body and the support arm positioned on the track body, the operation of the support arm moving via the track body, i.e., the movement of the work base, is more stable.

FIG. 1 is a side view showing an installation structure of a movable scaffolding according to a first embodiment of the present invention. FIG. 1A is a side view showing a track body attached to a support in Example 1 and a leg portion of a working platform attached to the track body, and FIG. 1B is a side view showing a mode in which a second leg portion located inside the leg portion is attached to the leg portion. FIG. 1A is a side view showing the installation structure of the movable scaffolding of the second embodiment, and FIG. 1B is a side view showing the second leg used therein.

The installation structure for a movable scaffolding of the present invention is a installation structure for a movable scaffolding that can be changed in position along the outer wall surface of a building, and is characterized in that it comprises: an attachment body which is two or more linear safety belts whose base ends are attached to the building; two or more supports which have an upright portion, a horizontal portion, and a connecting portion which connects the two and are fixed to the attachment body; a track body which is installed in an erected manner so as to straddle the supports perpendicularly and ensure sliding movement ; support arms whose ends are located within the track body; legs which extend vertically from the support arms; and a working base on which working scaffolding is integrally provided on the outside and inside of the legs, respectively.

The mounting body, support body, track body, and working base that constitute the installation structure of the mobile scaffolding of the present invention will be described below in that order.

The mounting body may be a frame-shaped material that is hung (hooked) onto the upper end of a flat roof or the like, or it may be a number of approximately linear materials (safety belts) whose base ends are attached to the building, or a combination of these, and does not specify the part of the building to which it is attached.
For example, in the case of the frame-shaped member, there is no limitation on its shape, etc., so long as it is a frame-shaped member that can be hung (hooked) on a rooftop or other facility.
In the case of the safety belt, the location where the base end of the approximately linear material is attached may be the eaves on the opposite side of the work target, the ridge top, or a combination of both, but is not limited to these, and a known safety rope (rope, belt) may be attached as long as it has the strength to ensure safety. In the case of a hipped roof, it may be attached to the other three sides. The attachment means (method) may be any type, such as engagement, and the material may be any material, such as a steel strip or linear material, or a rope, belt, or other material made of synthetic fibers such as nylon, as long as it has the strength to support other members including the support body.

The support body is a triangular material having at least an upright portion fixed to the mounting body as described above, a horizontal portion, and a connecting portion connecting the two, and each portion (each side) can be made of a square material (square pipe) having excellent tensile strength, or an angle material such as an L-shaped, U-shaped, or flat angle material.
Although the standing portion is fixed to the mounting body, the fixing point is not limited to the upper end, but may be fixed at any appropriate position, and the erection angle is not limited to approximately vertical.
Furthermore, the horizontal side portion may be aligned along a roof surface having a roof slope, or along a substantially horizontal upper surface such as a flat roof.
Furthermore, the connecting parts may be arranged inclined or horizontal, or a plurality of connecting parts (members) may be provided, in order to obtain the required strength as a roof slope or support.

The sides that form the support are connected in an angle-adjustable manner, making it possible to stably apply it to the rooftops of various buildings and to roof slopes of houses, etc. Any known configuration may be used for this purpose, and for example, multiple mounting holes may be provided in the upright portion, and the connecting portion may be fixed to any of the mounting holes while adjusting the angle appropriately.

In addition, in this mobile scaffold, two or more of each of these mounting bodies and supports are provided depending on the size of the building, but because each has a simple structure, the cost and weight (load) are not increased.

The track body is a member that is installed in a bridged manner relative to the support body as described above, and is installed so as to span two or more supports perpendicularly. That is, it is installed so as to be arranged perpendicularly and horizontally relative to the support body and to ensure sliding movement. This sliding movement is performed in a state in which the work base is suspended and supported, so in principle at least one track body is provided as a moving means on the upright part of the support body, but an additional (sub) track body may be provided as a regulating means to ensure smooth movement. That is, the track body as a moving means is essential, and the sliding movement cannot be performed with only the track body as a regulating means.
For example, when forming a continuous rail material having a U-shaped or square U-shaped cross section, the rail material may be attached to the support. This attachment structure may be a structure in which the rail material is directly fixed with a fastener or the like, or a structure in which a holder is fixed to the support and the rail material is held by the holder. It is preferable that there are two or more rail materials, in which case the multiple rail materials become the track body. At least one rail material is fixed to the standing portion of the support, but when two or more rail materials are attached, the number of rail materials is not limited to the standing portion alone, and they may be fixed to the standing portion and the connecting portion.

The track may be provided with (equipped with) a stopper (function) that limits (stops) the movement of the work base. The stopper is assumed to limit the range of movement of the work base and to prevent it from falling off the track. The configuration of the stopper is not particularly limited, but for example, it may be a hole or slit provided at any point at the end or middle of the track, into which a rod or plate is inserted.

As described above, the working platform comprises a support arm whose tip is located inside the track body, a leg extending vertically from the support arm, and a working scaffold integrally provided on the outside and inside of the leg. Each of these parts is mainly made of round or square pipe material or shaped material, and the material is not important as long as it is lightweight and strong, and each of the support arm, leg, and working scaffold may be a single member or each part may be made of multiple members. If they are made of multiple members, the assembly means may be any known method such as fastening or welding.

From the viewpoint of stability, it is desirable to provide two or more ends of the support arms, similar to the track body, and rollers or the like are provided on the ends positioned within the track body, but the number and specific configuration are not limited. Note that these rollers or the like are a means for moving within the track body, but may also serve as a regulating means for preventing the work base from falling over, etc.

The legs are parts that extend vertically from the support arms, and using a ladder body that extends in the height direction as in the illustrated embodiment is desirable from various standpoints such as stability. That is, by arranging the ladder body parallel to the exterior wall surface of a building, bottom plates or stepping boards on which workers performing various construction work stand can be easily attached to the outside and inside of the ladder body, making it possible to carry out construction work stably. However, since the ladder body itself often becomes an obstacle to work when carrying out various construction work on the exterior wall surface of a building, it is sufficient for workers to stand on a work scaffold formed on the inside of the ladder body and carry out the work.

The work scaffold is a member provided with a bottom plate or a step plate that is integrally provided on the outside and inside of the leg, respectively, on which workers who perform various construction work stand, and it is desirable to provide a safety frame or the like that allows work to be performed while preventing falls, etc. The bottom plate or step plate is formed so as to extend outward from the leg for the outside work scaffold . Also, the bottom plate or step plate may be formed (or attached) so as to extend inward in the same manner for the inside work scaffold , but may also be formed (or attached) so as to extend further inward from the second leg, with a second leg combined with the inside of the leg in a superimposed (contacting) manner.
Although it has been explained that a ladder body may be used as the leg, a ladder body may also be used as the second leg. Two ladders are already available on the market as extendable ladder materials that can slide in the length direction, and these ladder materials may be used as the leg and the second leg that can slide in a stacked manner. In this case, the ladder located at the top becomes the leg, and the ladder located at the bottom becomes the second leg. As in this example, when the second leg located on the inside, i.e., the inner work scaffold , can be moved in the height direction relative to the leg, construction of an exterior wall surface with a large height dimension can be more easily performed.

The support arm is a part that secures the distance from the tip disposed inside the track body, and may extend linearly or curvedly from the leg. For example, in the case of various construction work on the exterior wall surface, such as attaching components such as eaves gutters to the eaves, it becomes difficult to work if the work is too close to the exterior wall surface or the eaves, so the support arm can secure the working space.
As mentioned above, it is desirable for the support arms of the work platform to be two or more, and it is desirable for at least one of them to have a moving means interlocked with the track body. In this case, the support is stable even when the work platform is stopped, and is also stable and smoothly moved when the work platform is moving like a sliding object.

It is desirable that each component of the installation structure of the movable scaffold, consisting of the mounting body, support body, track body, and work base, be constructed from lightweight materials, and a worker positioned inside the work base can perform work while being suspended and supported by the mounting body and support body, and can move in a sliding manner along the outer wall surface.

As a result, workers can change their working position by sliding along the exterior wall surface without falling when repairing, maintaining, or otherwise modifying the exterior wall surface, eaves gutters, or accessories of a building. Therefore, contractors performing repairs and modifications can easily use the installation structure of this mobile scaffolding prior to carrying out various construction work, and overall, time and cost adjustments can be made extremely easily.

The installation structure of the movable scaffolding of Example 1 of the present invention shown in Figure 1 comprises two or more mounting bodies 1 whose base ends 11 are attached to a building A, two or more supports 2 each having an upright portion 21 fixed to the mounting body 1, a horizontal portion 22, and a connecting portion 23 connecting the two portions 21, 22, a track body 3 installed in a bridged state on the supports 2, a support arm 41 whose end (upper end 411, lower end 412) is located within the track body 3, legs 42 extending vertically from the support arm 41, and a working base 4 on which working scaffolding 43A, 43B are integrally provided on the outside and inside of the legs 42, respectively, and the position can be changed along the outer wall surface B.

The mounting body 1 is a safety belt in which multiple extension lines 12, 13 extend from a hook-shaped (approximately U-shaped) base end 11 and connect to the upper end of the standing part 21 and the tip of the horizontal part 22, respectively, but the extension lines 12, 13 may be rope-shaped. In the figure, 211 and 221 refer to mounting brackets fixed near the tips of the standing part 21 and the horizontal part 22, and the extension lines 12, 13 are tied to these mounting brackets 211, 221.

The materials forming the upright portion 21, the horizontal portion 22, and the connecting portion 23 of the support body 2 are all U-shaped angle irons, and in this Example 1, the upright portion 21 is attached approximately vertically and the horizontal portion 22 is attached along the roof surface C.
Further, a plurality of mounting holes 210 are formed in the standing portion 21, and the tip of the connecting portion 23 is connected to the mounting holes 210 such that the standing portion 21 is disposed substantially vertically.

In this embodiment 1, multiple mounting bodies 1 and supports 2 are provided according to the size of the building A, but because each has a simple structure, the cost and weight (load) are not increased.

The track body 3 is made of rail members 3A and 3B that are installed in a bridging manner with respect to the support bodies 2, and is installed so as to span perpendicularly across (the upright portions 21 of) a plurality of support bodies 2. These rail members 3A and 3B are each arranged horizontally in the depth direction from the front side in FIG.
In this embodiment 1, rail materials 3A and 3B are attached to two locations, one above and one below, on the outside of the upright portion 21 of the support body 2. The rail material 3A is formed in a groove shape (square groove shape) that is open at the bottom, and the rail material 3B is formed in a groove shape (arc shape) that is open at the top. Figure 2(a) shows that the upper end 411 and lower end 412 of the support arm 41 are attached in a fitting manner between these.

The working base 4 has the support arm 41, the leg 42 and the working scaffold 43, which are each formed from hollow square pipe material, and in this Example 1, the support arm 41 and the leg 42 can move in a sliding manner along the track body 3.
In this Example 1, of the working base 4, the leg 42 is a ladder-shaped molded body having a plurality of steps 421, and a second leg 42B, which is a ladder-shaped molded body having a plurality of steps 426 on its inner side, is combined in an overlapping (surface-contacting) manner, and a work scaffold 43A is provided extending outward from the leg 42, and a work scaffold 43B is provided extending inward from the second leg 42B.
In the drawings, 422 denotes a connecting reinforcement material that connects the leg 42 to the tip of the working scaffold 43A, and 423 denotes a connecting reinforcement material that connects the second leg 42B to the tip of the working scaffold 43B. Also, 425 denotes a step-like horizontal piece attached so as to extend inward from the leg 42, on which tools used for work may be hung.
The second leg 42B has hooks 424 that are open downward at two points fixed thereto, and the hooks 424 are fitted into two steps 421 of the leg 42 from above, thereby attaching the leg 42 and the second leg 42B in an overlapping (contacting) state, as shown in FIG. 2(b).
The hook 424 may be provided on the leg 42 instead of the second leg 42B. In this case, the hook 424 is attached to the leg 42 in the opposite direction so that the upper portion is open, and the step 426 of the second leg 42B is attached so as to be fitted from above.

As shown in Figure 2 (a), the support arm 41 consists of a vertical piece 41A, a horizontal piece 42B, a diagonal piece 41C connecting them, and a reinforcing material 41D that reinforces the combined structure, and the respective tips of the horizontal piece 42B, the diagonal piece 41C, and the reinforcing material 41D are fixed to a connecting fitting 41E that is integrally attached to the upper end of the leg portion 42.
Metal fittings holding spherical and wheel-shaped rotating bodies (rollers) are attached to the upper end 411 and lower end 412 of the support arm 41, i.e., the upper end 411 and lower end 412 of the vertical piece 41A.

The leg 42 is a ladder-like structure extending vertically from the support arm 41, and as described above, the ladder-like second leg 42B is combined with the leg 42 in a superimposed (contacting) manner on the inside, and the work scaffold 43A extending outward is formed at the lower end of the leg 42, and the work scaffold 43B extending inward is formed at the lower end of the second leg 42B. Also, since these work scaffolds 43A, 43B are combined with the leg 42 or the second leg 42B in a triangular shape by the connecting reinforcements 422, 423 as described above, they are fixed at approximately right angles.

The movable scaffolding consisting of the mounting body 1, support body 2, track body 3, and working base 4 has each of the components 1 to 4 constructed from lightweight materials, and a worker positioned within the working base 4 can work while being suspended and supported by the mounting body 1 and support body 2, and can slide along the outer wall surface to change his/her position.
This makes it easy to carry out repairs, maintenance, etc. of the exterior walls, eaves gutters, or accessories of the building. Although there are no particular limitations on the work, when carrying out various construction work on the exterior wall surface B, workers can carry out the work by standing on the work scaffold 43B extending inward, and when carrying out various construction work on the eaves gutters, etc., workers can carry out the work by standing on the work scaffold 43A extending outward.

The installation structure of the movable scaffolding in Example 2 shown in Figure 3(a) is for a typical house, i.e., building A, as compared to Example 1, in which building D is a concrete structure, and the upper end of the exterior wall surface E, which is long in the vertical direction, is connected to a parapet E', which is a rising wall, and a substantially flat roof G is formed with a fence F attached to the upper end.

In this second embodiment, a mounting body 1' is used that is substantially the same as in the first embodiment (part of the extension line 12 is omitted), but it differs in that it does not use the extension line 13, and further uses a second mounting body 1" that is hook-shaped (approximately U-shaped) as described below.

In addition, in this Example 2, the support body 2' formed from the standing portion 21', the horizontal portion 22', and the connecting portion 23' is an angle material combined in a T-shape, and in this Example 2, the standing portion 21' is attached approximately vertically and the horizontal portion 22' is attached along the upper surface of the parapet E', and the connecting portion 23' is a connecting metal fitting that connects them.
In addition, a substantially vertical vertical side portion 24 is formed at the tip of the horizontal side portion 22', which is arranged to penetrate near the bottom end of the fence F, and this support body portion 2' alone can be attached to the parapet E' in a fitted state from above (in reality, since the fence F is present, it cannot be attached in a fitted state from above, but the result is that it is arranged in a fitted state), so it can also serve as the second mounting body 1".

Therefore, these mounting bodies 1' and support bodies 2' (second mounting bodies 1") can be stably attached to the parapet E'.

In this second embodiment, the same track body 3 (rail members 3A and 3B) as in the first embodiment is used, so the same reference numerals are used in the drawings and the description is omitted.

In addition, in this embodiment 2, the same support arms 41, legs 42, and working platform 43A extending outward are used as in the above-mentioned embodiment 1, so the same reference numerals are used in the drawings and the description is omitted.

In this way, the track body 3, support arm 41, and leg 42 in this Example 2 are exactly the same as those in Example 1, so construction can be performed while stably sliding along the outer wall surface E in the same manner as in Example 1.

The second leg 42B' in this embodiment 2 is similar to the first embodiment in that a working platform 43B extending inward is formed at the lower end of the second leg 42B' as shown in Figure 3 (b), a hook 424 is provided, and a step 426 is provided. However, it differs from the first embodiment in that the height dimension is shorter and no connecting reinforcement material 423 is used.
Therefore, since the second leg 42B' is obviously lighter than the second leg 42B in the first embodiment, it is easy to change the position of the work platform 43B in the vertical direction, i.e., in the height direction, relative to the leg 42. As a result, construction of the exterior wall surface E, which has a large height dimension, can be performed more easily.

REFERENCE SIGNS LIST 1, 1' Mounting body 11 Base end 2, 2' Support body 21, 21' Standing portion 22, 22' Horizontal side portion 23, 23' Joint portion 3 Track body 3A, 3B Rail member 4, 4' Work base 41 Support arm 42 Leg portion 42B, 42B' Second leg portion 43A, 43B Work platform
A Building B Exterior wall C Roof D Building E Exterior wall E' Parapet F Fence G Rooftop

Claims (3)

A movable scaffolding installation structure that can change its position along the outer wall surface of a building,
An attachment body which is two or more linear safety belts whose base ends are attached to the building;
Two or more supports each having an upright portion, a horizontal portion, and a connecting portion connecting the upright portion and the horizontal portion to be fixed to the mounting body;
A track body is installed in a bridge manner so as to straddle the support body perpendicularly and ensures a sliding movement ;
A movable scaffolding installation structure comprising: a support arm whose end is located within the track body; a leg extending vertically from the support arm; and a work base on which a work scaffold is integrally provided on the outside and inside of the leg, respectively. 2. The installation structure for a movable scaffold according to claim 1, wherein at least one of the work scaffolds located on the inside of the leg is movable in a height direction relative to the leg. The movable scaffolding installation structure according to claim 1 or 2, characterized in that the track body and the end of the support arm positioned on the track body are two or more.

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