JP7461035B2 - 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, fix, and maintain the eaves gutters, exterior walls, 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, exterior walls, and roof surroundings such as eaves gutters of existing buildings such as houses, including this example, it is common to install scaffolding around the building and at the border with neighboring houses before carrying out 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.

Therefore, the present invention is easy to install at a low cost even if the distance between adjacent buildings is small, and does not cause problems such as workers falling when using it. Alternatively, the purpose is to propose a movable scaffold installation structure that allows for modification, repair, and maintenance of accessories.

The present invention has been proposed in view of the above, and relates to an installation structure for a movable scaffold that can be moved along the eaves of a roof, characterized in that it comprises two or more safety belts whose base ends are attached to a building, two or more supports each having an upright part fixed to the safety belt, a slant part along the roof surface, and a connecting part connecting the two, a track body installed in a spanning manner on the supports, a support arm whose tip is located within the track body, legs extending vertically from the support arm, and a working base having a working body integrally installed on the legs.

The present invention also proposes an installation structure for a movable scaffold, characterized in that in the installation structure, the support is connected such that the upright portion, the oblique side portion, and the connecting portion are angle-adjustable.

Furthermore, the present invention also proposes a movable scaffold installation structure, wherein the track body has a stopper function for restricting movement of the work base.

Further, in the installation structure, the present invention is characterized in that the support arms of the work base are at least two, and at least one of them has a moving means in conjunction with the track body. We also propose an installation structure for movable scaffolding.

The movable scaffold installation structure of the present invention is easy to install at low cost even if the distance between adjacent buildings is narrow, and there is no problem such as falling when using it, and it can be installed along the eaves of a roof. A worker who slides onto the work base can change his or her work position as the construction work progresses.
Therefore, it can be applied to the renovation, repair, maintenance, etc. of eaves gutters, external walls, and accessories of buildings extremely easily and inexpensively, without causing various problems related to conventional construction and costs.

When the support body has the upright portion, the oblique side portion, and the connecting portion connected to each other so that the angle can be adjusted, the support body can be stably applied to various roof slopes.

If the track body has a stopper function that restricts the movement of the work base, various construction work can be safely performed with the work base stopped, and the work base will not fall off from the track body. It is also possible to prevent accidents such as

When the working base has at least two support arms and at least one of them has a moving means linked to the track body, it is stably supported even when stopped, and is stably supported and moves smoothly even when in a sliding moving state.

1 is a perspective view showing an installation structure of a movable scaffold according to a first embodiment of the present invention; FIG. (a) Side sectional view showing the installation structure of the movable scaffold of the first embodiment, (b) Side sectional view showing the installation structure of the movable scaffold in a different aspect, (c) to (h) Variations of the support base FIG. (a) Side sectional view showing the installation structure of the movable scaffold of the second embodiment, (b) Front view and side view showing the work base used therein, (c) Installation structure of the movable scaffold of the third embodiment FIG. (a) A perspective view, a front view, and a side view showing a holder with a fall prevention function; (b) and (c) a perspective view, a front view, and a side view showing a specification with a fall prevention function attached to the lower end of the upright part. , (d) are a perspective view, a front view, and a side view showing a holder having a fall prevention function. (a) Side view showing specifications for directly fixing the rail material to multiple mounting holes provided in the upright section, (b), (c) Holding for holding the rail material in the multiple mounting holes provided in the upright section FIG. 3 is a side view showing the specifications for attaching the tool. (a) A side cross-sectional view showing the installation structure of the movable scaffolding of the fourth embodiment; (b) An oblique view showing the working platform and a part of the track body (sub-track body) used therein; (c) An enlarged oblique view, front view and side view of the sub-track body; (d) A side cross-sectional view showing the installation structure of the movable scaffolding of the fifth embodiment; (e) A side cross-sectional view showing the installation structure of the movable scaffolding of the sixth embodiment. (a) to (d) A perspective view, a side view, and a front view showing variations of movement control provided on the track body, and (e) a side sectional view showing the installation structure of the movable scaffold of the seventh embodiment. It is a sectional side view which shows the installation structure of the movable scaffold of 8th Example.

The movable scaffold installation structure of the present invention is a movable scaffold installation structure that can change its position along the eaves of a roof, and includes two or more safety belts whose base ends are attached to a building, and the safety belts. two or more supports comprising an upright part fixed to the roof, an oblique part along the roof surface, and a connecting part connecting the two; a track body installed in a construction manner with respect to the supports; The present invention is characterized in that it consists of a support arm whose tip is located at , a leg extending vertically from the support arm, and a work base including a work body integrally provided with the leg.

The safety belt, support, track, and work platform that constitute the installation structure of the mobile scaffold of the present invention will be described below in that order.

The safety belt is a substantially linear material whose base end is attached to a building as described above, and does not specify the part of the building to which the base end is attached. For example, as shown in the illustrated example described later, it may be the eaves on the opposite side of the construction target, it may be the top of the ridge, or it may be a combination of both, but it is not limited to these, as long as it has the strength to ensure safety. A known safety line (rope, belt) may be attached. In addition, in the case of a hipped building, it may be attached to the other three sides.
The attachment means (method) may be of any type, such as engagement, and the material may be steel strip or wire as long as it has the strength to support other members including the support. It may be made of shaped steel, or other materials such as ropes, belts, etc. made of synthetic fibers such as nylon.

As described above, the support body is made of a material that includes at least an upright part fixed to the safety belt, an oblique part along the roof surface, and a connecting part connecting the two parts, and each part has a triangular shape. It includes. For each part (each side), a square piece (square pipe), an L-shaped piece, a U-shaped piece, a flat piece, etc. can be used. As shown in the illustrated embodiment described later, it is preferable that the upright portions of these sides be arranged substantially vertically and the connecting portions be arranged substantially horizontally, but the present invention is not particularly limited thereto.
In addition, although the said upright part is fixed to the said safety belt, the fixed location is not limited to an upper end, It just needs to be fixed at an appropriate position.
Further, the connecting portion may be arranged in an inclined or horizontal manner, or a plurality of connecting portions (materials) may be provided in order to obtain the roof slope and the required strength as a support.

Each side forming the support body is connected so that the angle can be adjusted, so that it can be stably applied to various roof slopes. Any known configuration may be adopted as this configuration. For example, as in the illustrated embodiment described later, a plurality of mounting holes are provided in the upright part, and the connecting part can be freely adjusted while adjusting the angle appropriately. It may also be fixed in a mounting hole.

In addition, with this mobile scaffold, two or more of each of these safety belts and supports are provided depending on the size of the building (roof surface), but since each is of simple construction, there is no increase in cost or weight (load).

As described above, the track is a member that is installed in a bridged manner relative to the support, 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, and so as to ensure sliding movement. This sliding movement is performed in a state in which the support base is suspended and supported, so in principle at least one track is provided as a moving means on the upright part of the support, but an additional (sub) track may be provided as a regulating means to ensure smooth movement. That is, the track is essential as a moving means, and the sliding movement cannot be performed with only the track 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 such that the rail material is directly fixed with a fastener or the like, or that 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.

This track body may be provided with a stopper (function) that limits (stops) the movement of the work base. This stopper is assumed to limit the range of movement of the work base and to prevent it from falling off the track body. Although the structure of this stopper is not particularly limited, for example, as shown in the illustrated embodiment described later, holes or slits are provided at the end of the raceway body or at arbitrary locations in the middle, and the stopper is made of bar or plate material. It may also be something that can be inserted.

As described above, the work base includes a support arm whose tip is located within the orbital body, a leg extending vertically from the support arm, and a work body integrally provided with the leg. These parts mainly consist of round, square, etc. pipe materials and shapes, and the material does not matter as long as it is lightweight and strong, and each part of the support arm, leg, and work body may be a single member, or each portion may consist of a plurality of members. In addition, when it is composed of a plurality of members, the assembly means may be any known method such as fastening or welding.
As with the track body, it is desirable to provide two or more of the support arms from the viewpoint of stability, and rollers or the like are provided at the tips located within the track body, but the number and specific configuration thereof are limited. isn't it. The rollers and the like are a moving means for moving within the track body, but may also serve as a regulating means for preventing the work base from falling over.
The leg part is a part that extends in the vertical direction from the support arm, and the work body is a part that is integrally provided with the leg part and is a part where a worker who performs various construction work is located, which will be described later. It is desirable to provide a safety frame or the like that allows work to be carried out while preventing falls, as shown in the illustrated embodiment. Further, this leg (lower part) may be provided with a regulating part (a part that contacts the wall surface to prevent the leg from tilting toward the inner ring) extending toward the outer wall, and a roller is attached to the tip of the regulating part. It's better to have one.

The support arm is a part that ensures a distance from the tip disposed in the orbital body, and may extend linearly or curved from the leg. For example, in the work of attaching members such as eaves gutters to the eaves, the work becomes difficult if the work is too close to the eaves, so the support arm can secure a work space.
Further, as described above, it is desirable that the working base has two or more supporting arms, and it is desirable that at least one of them has a moving means in conjunction with the track body. In this case, it is stably supported even in a stopped state, stably supported even in a sliding state, and moved smoothly.

It is desirable that each component of the installation structure for the movable scaffold, consisting of the safety belt, support, track, and work base, be made of lightweight materials, and the worker working inside the work base can work while being suspended and supported by the safety belt and support, sliding along the eaves as he or she moves.

As a result, workers can slide along the eaves of the roof to change their working position when repairing, maintaining, or renovating the eaves gutters, exterior walls, or accessories of a building, without falling or other problems. Therefore, contractors carrying out repairs and renovations can easily use the installation structure of this mobile scaffolding before carrying out various construction work, and overall it is extremely easy to adjust time and costs.

The installation structure of the movable scaffold according to the first embodiment of the present invention shown in FIG. , two or more supports 2 including an oblique side portion 22 along the roof surface B, and a connecting portion 23 connecting both 21 and 22; and a track body 3 installed in a construction manner with respect to the supports 2. A work base 4 comprising a support arm 41 with a tip 411 located within the track body 3, a leg 42 extending vertically from the support arm 41, and a work body 43 integrally provided with the leg 42. The position can be changed along the eaves of roof B.

The safety belt 1 is a substantially linear material whose base end 11 is attached to a building, and although it is shown like a ridge on the roof surface B in the illustrated embodiment, it can also be used at the eaves on the opposite side of the construction target. good. Note that the material may also be rope.

The support body 2 has the standing portion 21, the oblique side portion 22, and the connecting portion 23 each being a U-shaped angle material, and in this first embodiment, the standing portion 21 is adjusted so as to be arranged approximately vertically and the connecting portion 23 is adjusted so as to be arranged approximately horizontally.
That is, a plurality of mounting holes are formed in the upright portion 21, and the connecting portion 23 is connected to the mounting holes arranged in a substantially horizontal manner.

In this first embodiment, three of each of these safety belts 1 and supports 2 are provided, but because each has a simple structure, the cost and weight (load) are not increased.

The track body 3 (rail material 3A) is a member installed in a construction manner with respect to the support body 2, and is constructed so as to span the three support bodies 2 orthogonally.
In this first embodiment, a holder 3b having a J-shaped cross section is attached to the mounting hole of the upright part 21 of the support body 2 at two upper and lower places, and two upper and lower parts fixed to the adjacent upright parts 21, 21 are attached. Rail members 3A and 3A each having a U-shaped cross section are installed horizontally so as to span the holders 3b and 3b, respectively. Therefore, sliding movement is ensured.

In the work base 4, the support arm 41, the leg portion 42, and the work body 43 are each formed of a hollow square pipe material, and in the first embodiment, the support arm 41 is approximately horizontal. It is arranged in an inverted L shape that extends and hangs down. In this first embodiment, the work base 4 has a shape formed by molding a ladder body, that is, it is a double molded body having a width, and both the supporting arm 41 and the leg portion 42 are similar to the work body 43. also refer to the ladder-shaped molded parts. For example, the support arm 41 is formed into an inverted L-shape as described above, but the ladder body (double-shaped body with width) is formed into an inverted L-shape, and the leg portions 42 are It is exactly like a ladder that extends vertically.

Similar to the rail material 3A, two of the support arms 41 are provided above and below, and a roller is rotatably pivotally attached to a tip 411 located inside the rail material 3A. In addition, since this support arm 41 is formed by molding a ladder body into an inverted L shape as described above, one support arm 41 has two leg-shaped ends facing downward, and the leg-shaped ends are formed in one support arm 41. Since a roller is pivotally attached to each end, a total of four rollers are attached to the two support arms 41. It goes without saying that this roller is a moving means that rotates when moving within the rail material 3A.

The leg portion 42 has a vertical rod shape extending vertically from the support arm 41, and the work body 43 is formed into a ladder shape including the leg portion 42, and is used for various construction work. A bottom plate 431 on which the worker stands is located at the lower end, and a U-shaped safety frame 432 that allows the worker to work while preventing falling etc. is provided at two locations above and below in the middle of the height. ing.

The installation structure of the movable scaffold consisting of the safety belt 1, the support body 2, the track body 3, and the work base 4 is such that each member 1 to 4 is made of a lightweight member and is located inside the work base 4. The worker who is performing the work can perform the work while being suspended and supported by the safety belt 1 and the support body 2 while changing the position in a sliding manner along the eaves.
Although the work itself performed by the worker will not be explained, it is possible to easily repair, repair, maintain, etc. the eaves gutters, outer walls, or accessories of a building.

The installation structure of the movable scaffold shown in FIGS. 2(a) and 2(b) is similar to the first embodiment in which the track body 3 (rail material 3A) is installed at two locations on the upright portion 21. FIG. 2B shows a mode in which track bodies 3' (rail materials 3A, 3C) are provided in the upright portion 21 and the connecting portion 23, respectively.
Figures (c) to (h) show variations of the working base 4, and the working bases 4c and 4d shown in Figures (c) and (d) are used in the embodiment shown in Figure (a), The work bases 4e to 4h shown in FIGS. 4(e) to 4(h) are used in the embodiment shown in FIG. 1(b).
Note that the working base 4' used in FIG. 4B is substantially the same as a working base 4e, which will be described later, so a description thereof will be omitted here.

2(c) and 2(d) are almost the same as the working base 4 of the first embodiment, and have holding plates 5a facing each other at the lower ends of two support arms 41, and rollers 5b pivotally attached to the holding plates 5a. Note that while the tip of the support arm 41 is indicated by reference numeral 411 in FIG. 1, in FIG. 2 it is more specifically indicated as the holding plate 5a and roller 5b.
For this reason, a total of four rollers 5b are attached to the working bases 4c and 4d used in the embodiment of Fig. 1(a) like the working base 4. The working base 4d has reinforcing rods 45, 45 connected between the two support arms 41, 41 to improve the strength of these support arms 41, 41.

The working bases 4e to 4h shown in FIGS. 2(e) to 4h have only one support arm 41 at the lower end, similar to the working base 4' used in the embodiment of FIG. 2(b). Two rollers 5b are provided as moving means for moving within the track body 3', and a total of two rollers 5b are provided at the upper ends of the legs 42 as regulating means to prevent the work base 4' from falling. A roller 5c is pivotally mounted.
That is, the function of the rollers 5b as a moving means is to smoothly move the worker and the work base 4' while suspending them, as in the first embodiment, but the function of the rollers 5c as a regulating means is to By moving within the rail material 3C fixed to the connecting portion 23' of the support body 2, the work base 4' is prevented from falling down, thereby smoothly performing the movement.
Note that the safety frame 432' may be provided on the building side as in the work base 4f shown in FIG. A reinforcing rod 46 may be connected to the upper end to improve the strength of these legs 42, 42, and three rollers 5b are attached to the working arm 41 as shown in the working base 4h shown in FIG. may be pivoted.

In the second embodiment shown in FIG. 3(a), the track body 3 (two rail members 3A) is directly attached to the connecting portion 23ii and oblique side portion 22ii of the support body 2II instead of the upright portion 21ii. , differs from the first embodiment in that the two working arms 41ii of the working base 4II are each formed in an inverted J shape, but other than that the configuration is almost the same, so the same reference numerals are given in the drawings. The explanation will be omitted.
Note that FIG. 4A shows the state immediately before the work base 4II is attached to the track body 3, and can be easily installed by one or two workers.

This second embodiment is similar to the first embodiment in that the support body 2II includes a substantially vertical upright portion 21ii, an oblique side portion 22ii along the roof surface B, and a substantially horizontal connecting portion 23ii. The connecting portion 23ii extends toward the eaves from the upright portion 21ii, and the rail material 3A is directly fixed to the upper surface side of the connecting portion 23ii and the oblique side portion 22ii, respectively.

The working base 4II shown in Figure 3(b) has two working arms 41ii each formed in an inverted J shape as described above, and a roller 5b is pivotally attached to the tip of the arm positioned inside the rail material 3A. Since the rest of the configuration is almost the same, the same reference numerals are used in the drawings and the description is omitted.

The third embodiment shown in FIG. 3(c) differs from the second embodiment in that the base end 11iii of the safety belt 1III is attached in an engaging manner to the eaves on the opposite side of the work target, but other than that the configuration is almost the same, so the same reference numerals are used in the drawings and the description is omitted.

4(a) and (d) show a specification in which a tip-prevention function is provided to the holder 3d that holds the rail material 3A, and Fig. 4(b) and (c) show a specification in which a tip-prevention function is provided to the lower end of the standing part 21. The tip-prevention function refers to the provision of a member that is wider than the support body 2 (the width of the oblique side part 22) as the ground contact part (bottom surface).
The retainer 3d shown in Fig. 4(a) has a J-shaped cross section with a recessed portion into which the rail material 3A is inserted, like the retainer 3b, but its lower surface extends toward the building side and also serves as the bottom surface portion 31 that receives the lower end of the standing portion 21. That is, the retainer 3d has a lower surface (bottom surface portion) of a fixed length, and by attaching it below the standing portion 21, it comes into close contact with the standing portion 21 and acts to prevent it from falling over. Note that there is no restriction on whether or not they are in constant contact. The fall prevention piece 211 is a member for connecting the retainer 3d to the support body 2 (standing portion 21).
The tip-over prevention function shown in Fig. 4(b) is provided independently on the standing part 21, and is composed of a rectangular bottom surface part 212 extending substantially horizontally, and inclined tip-over prevention pieces 211, 211 connecting the bottom surface part 212 to the standing part 21. In other words, this tip-over prevention function is a band-like plate 212 long horizontally in a direction intersecting with the slope of the roof, which is attached to the lower end of the standing part 21, and the attachment method is not particularly important, and it may be provided on the back surface of the oblique side part 22, or multiple plates 212 may be provided at predetermined intervals in the longitudinal direction on one support body 2.
4(c), the bottom surface 213 is formed in a square shape, so that the anti-tip piece 211 is not provided, but the bottom surface 213 is provided with an insertion recess into which the lower end of the standing part 21 is inserted, and the tip of the oblique side part 22 can be fixed to the standing part 21 inserted into the insertion recess. In other words, this anti-tip function is achieved by making the bottom surface 213 rectangular rather than horizontally long, and the attachment location and method are the same as those in FIG. 4(b).
The retainer 3d' shown in Figure 4(d) has the same basic configuration as the retainer 3d, but the bottom surface portion 31' is formed to be wide not only in the direction intersecting the roof slope but also in the direction toward the eaves, thereby enhancing the anti-toppling effect.
As shown in Figures 4(b) and (c), wide ground contact parts (bottom parts) 212, 213 may be provided on the support 2 at the lower end of the upright part 21 or the back surface of the oblique side part 22 to prevent tipping over, or as shown in Figures 4(a) and (d), the bottom parts 31, 31' of the holders 3d, 3d' may be made wide to prevent tipping over. In addition, the outside (front side) of the recessed part on which the rail material 3A is placed on the wide bottom part 31' of the holder 3d' can also be used as a material storage for eaves gutters and the like.

5(a) to (c) show the manner in which the track body is attached to the support, with FIG. 5(a) showing a specification in which rail material 3A″ is directly fixed to a plurality of mounting holes provided in standing portion 21, and FIGS. 5(b) and (c) showing a specification in which holders 3e, 3f that hold rail material 3A are attached to a plurality of mounting holes provided in standing portion 21.
The rail material 3A" differs from the rail materials 3A, 3A' in that it is provided with a horizontal piece that receives the lower end of the standing portion 21. In addition, the retainer 3e has two opposing mounting portions 301, one above and one below, that can be attached by fitting from the front side of the standing portion 21, and the mounting portions 301 are fixed to the standing portion 21 with bolts and nuts 302. Furthermore, the retainer 3f is fixed with screws 303 in a state where it is aligned along the front side of the standing portion 21.

The fourth embodiment shown in Fig. 6(a) comprises a track body 3 as a moving means and a sub-track body 6 as a regulating means. Note that in Fig. 6 and other figures, this sub-track body has been described as a part of the track body, so that in Fig. 6, different reference numerals are used to describe the same configuration as in those figures.
The sub-track 6 in the fourth embodiment is composed of an inverted U-shaped member 6A that is open downward, and a number of cylindrical members 6b that are provided on the inner surface of the member 6A at a predetermined interval in an opposing manner, as shown in FIG. 1(c). When the upper ends of the legs 42iv are inserted into the track 6, the upper ends of the legs 42iv are smoothly moved in the longitudinal direction.
In the working base 4IV in the fourth embodiment, as shown in FIG. 1(b), the sub-track body 6 is fixed downward to a mounting rod 44 attached to the upright portion 21 of the support body 2, and a leg 42iv extends higher than a support arm 41iv equipped with a roller 5b as a moving means, and no special processing is applied to the upper end of the leg 42iv.

In the sub-orbital body 6 in this fourth embodiment, the upper end of the leg portion 42iv moves between a large number of cylindrical bodies 6b provided oppositely on the front and rear surfaces, so that each cylindrical body 6b rotates in its own field. By doing so, it is possible to smoothly move the leg portion 42iv in the length direction without pressure contact or friction with the upper end of the leg portion 42iv.
Therefore, in this fourth embodiment, the work base 4IV can be smoothly slid along the eaves of the roof.

In the fifth embodiment shown in FIG. 6(d), the sub-track body comprises an inverted U-shaped rail member 6d that is fixed downward to the mounting rod 44 and is open at the bottom, and rollers 6c that are attached to the upper ends of the legs 42v. The rollers 6c can rotate vertically within the rail member 6d, thereby moving the legs 42v in a sliding manner.
In the sixth embodiment shown in FIG. 6( e), the sub-track body comprises an inverted U-shaped rail member 6 f that is fixed facing downward to a mounting rod 44 and is open at the bottom, and rollers 6 e that are attached to the upper ends of legs 42 v. The rollers 6 e can move the legs 42 vi in a sliding manner while rotating laterally (horizontally) within the rail member 6 f.

In these fifth and sixth embodiments as well, the upper ends of the legs 42v and 42vi (rollers 6c and 6e) move within the rail members 6d and 6f, so there is no pressure contact and friction with the upper ends of the legs 42v and 42vi. It can be moved smoothly without any friction.
Therefore, in these fifth and sixth embodiments as well, the work bases 4V and 4VI can be smoothly slid along the eaves of the roof, similarly to the fourth embodiment.

FIGS. 7(a) to 7(c) show variations in movement control provided to each track body (U-shaped rail members 7A to 7C each having an open top).
First, the rail material 7A shown in FIG. 7(a) is provided with through holes 71 for mounting at predetermined intervals along the length direction on both side surfaces, and stop rods 72 are inserted into the through holes 71 so that the rail material 7A can be used for rolling. The configuration is such that it serves as a stopper to stop the movement of the 5b.
Next, the rail material 7B shown in FIG. 7(b) is provided with mounting grooves 73 cut out from the upper end on both sides, and a stop cover 74 with the front and rear ends folded down is placed in the mounting grooves 73 from above. It serves as a stopper for the roller 5b.
Moreover, the rail material 7C shown in FIG. 7(c) is provided with a mounting groove 75 cut out from the upper end on one side surface, and a stop bar 76 is disposed leaning against the mounting cavity 75, so as to stop the roller 5b. It is said that

The rail material 7D shown in FIG. 7(d) is also provided with a mounting groove 75' cut out from the upper end on one side surface, but the mounting groove 75' is in the form of a narrow slit; A collapsible locking bar 77 is arranged at ' to serve as a stopper for stopping the advance of the roller 5b.
FIG. 7(e) shows the installation structure of a movable scaffold according to the seventh embodiment using the same, in which the rail material 3A located above the upright part 21 is The mounting groove 75' is provided in the rail member 7D, which is held by the tool 3e and located below the upright portion 21, and the locking bar 77 is used as a stopper.
Therefore, in this seventh embodiment, the work base 4VII is stably suspended and supported by the two rail members 3A and 7D, can be slidably moved, and can be stopped at an appropriate position.

In the eighth embodiment shown in FIG. 8, the support body 2VIII consists of an upright part 21, an oblique side part 22, and a connecting part 23viii, and the track body 3VIII consists of rail materials 3A and 3C" attached to the upright part 21. , the support base 4VIII consists of a support arm 41viii having rollers 5b, 5b, a leg portion 42, and a work body 43.The same reference numerals are used in the drawings to omit the explanation for the same structure as in the above embodiment. do.

The support 2VIII has a vertically long upright portion 21, and therefore the connecting portion 23 which connects to the oblique side portion 22 is attached in an inclined manner with the eaves side higher.
In the track body 3VIII, a rail material 3A for a moving means is fixed to the lower end of the standing portion 21 of the support body 2VIII so that its upper portion is open, and a rail material 3C" for a regulating means is fixed above the standing portion 21 of the support body 2VIII so that its lower portion is open.
The working base 4VIII is formed by combining support arms 41viii in a triangular shape, each of which has a vertical section disposed approximately parallel to the standing portion 21, a horizontal section perpendicular to the vertical section, and an inclined section connecting the ends of the vertical section and the horizontal section. A roller 5b for a moving means is attached to the underside of the base end of the horizontal section so as to be rotatable in the vertical direction, and a roller 5c for a regulating means is attached to the upper end of the vertical section so as to be rotatable in the horizontal direction.

In this eighth embodiment, the support 2VIII is highly stable, and the work base 4VIII is supported by the track body 3VIII so that it can be moved more stably, so that the worker standing on the work base 4VIII can change his/her working position as the construction work progresses.

REFERENCE SIGNS LIST 1 safety belt 11 base end 2 support 21 rising part 22 oblique side part 23 connecting part 3, 3' track body 3A, 3C rail material 3b holder 4 working base 41 supporting arm 42 leg part 43 working body 5b roller A building B roof (surface)

Claims (4)

A movable scaffolding installation structure that can change its position along the eaves of a roof,
two or more safety belts having proximal ends attached to the structure;
two or more supports comprising an upright part fixed to the safety belt, an oblique part along the roof surface, and a connecting part connecting the two;
a track body installed in an erected manner with respect to the support body;
A movable scaffold comprising: a support arm whose tip is located within the orbital body; a leg extending vertically from the support arm; and a work base including a work body integrally provided with the leg. installation structure. The movable scaffolding installation structure according to claim 1, characterized in that the support is connected such that the upright portion, the oblique side portion, and the connecting portion are angle-adjustable. The movable scaffold installation structure according to claim 1 or 2, wherein the track body has a stopper function for restricting movement of the work base. The movable scaffolding installation structure according to any one of claims 1 to 3, characterized in that the support arms of the working base are at least two, and at least one of them has a moving means linked to the track body.

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