JP2012193518A - Scaffold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scaffold which allows other operators to easily go up and down stairs even when temporarily installed at the turn-back part of a U-turn type stairs.SOLUTION: With a scaffold 1 temporarily installed at a turn-back part 21, an operator A riding on a floor part 2 can perform various work above the turn-back part 21. Other operators can go up and down stairs 20 through a turn-back route 15 formed inside a floor supporting part 10. The scaffold 1 is thus prevented from getting in the way even when temporarily installed at the turn-back part 21 of the U-turn type stairs 20, so that the other operators easily go up and down the stairs 20.

Description

  The present invention relates to a scaffold temporarily installed at a folded portion of a U-turn type staircase.

  Conventionally, as described in Patent Documents 1 to 3 below, scaffolds temporarily installed on stairs at the time of construction or renovation of buildings are known. In the scaffold described in Patent Document 1, a floor is constructed between support legs that are erected at three or more stages, and the floor is composed of a plurality of work stages. In the scaffold described in Patent Document 2, a step board (floor) is installed on a leg whose height is adjustable, and an arm that presses the left and right side walls is provided on the leg. In the scaffold described in Patent Document 3, a leg is provided with a jack, and the repositioning of the scaffold is facilitated by this jack.

Japanese Utility Model Publication No. 61-26852 JP-A-6-346588 No. 7-35013

  Temporarily installing the above-described scaffolding on the stairs causes an operator to get on the floor of the scaffold to perform work. On the other hand, it may be necessary for other workers to move up and down the stairs. Specifically, this may be the case when other workers move between the upper and lower floors or transport materials using stairs. In this case, the temporary scaffold may become an obstacle, and it may be difficult for other workers to go up and down the stairs.

  For example, in the case of a large-scale building having a plurality of stairs, such as a commercial facility or a building, other workers can use other stairs on which no scaffold is installed. Also, if the width dimension of the stairs is sufficiently large, another worker's passage can be secured by bringing the scaffold to one side in the width direction of the stairs. In the case of new construction, stairs and elevators can be temporarily installed outside the building.

  However, in the case of a small-scale building such as a detached house, for example, a plurality of stairs are rarely installed, and in many cases, there is one stairs. Moreover, the width of the stairs is relatively small. In new construction work, it is actually difficult to temporarily install stairs and elevators outside due to cost and space constraints.

  There are various types of stairs, but one type is a so-called U-turn stairs that folds 180 degrees along the way. Even in this U-turn type staircase, when a scaffold is temporarily installed in the folded portion, the same problem as described above occurs. That is, if a scaffold is temporarily installed at the folded portion of the U-turn staircase, there is a problem that the scaffold becomes an obstacle and it is difficult for other workers to ascend and descend the staircase.

  An object of the present invention is to provide a scaffold that allows another operator to easily move up and down the stairs even when temporarily installed at a folded portion of a U-turn staircase.

  A scaffold according to the present invention is a scaffold temporarily installed at a folded portion of a U-turn type staircase, and is disposed along the outer edge of the folded portion, supporting the floor portion on which an operator rides, and the floor portion. A floor support part, and the floor support part is characterized in that a folding path for stairs is formed inside.

  According to the scaffold according to the present invention, by temporarily setting the scaffold on the folded portion, the operator can perform various operations on the floor portion above the folded portion. Here, the floor support part which supports a floor part is arrange | positioned along the outer end edge of a folding | returning part. Further, a folded passage is formed inside the floor support portion. For this reason, other workers can go up and down the stairs while passing through the return path. Therefore, even when a scaffold is temporarily installed at the folded portion of the U-turn staircase, the scaffold is prevented from becoming an obstacle, and other workers can easily ascend and descend the staircase.

  Here, the floor support portion includes first and second legs facing each other, and a connecting body that connects the first and second legs, and the floor support portion is U-shaped in a plan view. It is preferable to make a shape.

  According to the above configuration, the first and second legs facing each other and the connecting body that connects these legs are arranged along the outer edge of the folded portion, and have a U-shape in plan view. Eggplant. Thereby, the open part opened toward the near side of the folding | returning part is formed in a floor support part. And this opening part becomes an entrance / exit of a return passage, and other workers can easily enter and exit the return passage. Furthermore, since the floor support part is formed in a U shape to form a folded passage, the floor support part functions as a guide when another worker moves up and down the stairs. For example, even when the outer wall of the folded portion is not completed during the construction of the building, the floor support portion can prevent the other worker who goes up and down the stairs from falling outside.

  Each of the first and second legs is attached to the connecting body so as to be rotatable about first and second axes extending in the vertical direction, and the first and second axes are connected to each other. It is preferable that it is fixed by the floor portion in a rotational position perpendicular to the plane including it.

  According to the above configuration, since each of the first and second legs is fixed by the floor, the above-described U-shaped form is reliably formed. Further, each of the first and second legs is fixed at a rotational position perpendicular to the plane including the first and second axes, so that the distance between the first and second legs is lower. The first leg and the second leg are kept parallel to each other without being spread toward the head. As a result, the stability as a scaffold is enhanced.

  Further, the flat floor portion is composed of a plurality of plate materials whose both ends are supported by the first and second legs and arranged in parallel in the depth direction of the folded portion, and at least the near-side plate material is the floor support portion. On the other hand, it is preferable that it is detachable.

  According to the said structure, an open part is formed in the upper surface of the near side of a folding | return channel | path by detaching | desorbing the board | plate material of this side from a floor support part. Therefore, the degree of freedom in handling can be improved, for example, when transporting materials, without moving the entire scaffold, or the work by other workers can be performed more smoothly.

  Further, at least one of the first and second legs has a pair of feet that contact the stepped plate surface of the staircase, and at least one of the pair of feet is adjustable in length. Even when the first leg or the second leg straddles two corrugated plate surfaces having different heights, the footing is adjusted to adjust the length of the foot so that the scaffold is temporarily and stably installed. be able to.

  In addition, if the floor height corresponds to the floor height of the upper floor, a work plate can be installed between the floor and the upper floor, and the turn-up section and the upper floor are connected. A flat floor can also be temporarily installed above the straight portion.

  According to the scaffold according to the present invention, even when temporarily installed on the folded portion of the U-turn type staircase, other workers can easily ascend and descend the staircase.

1 is a perspective view of a scaffold according to a first embodiment of the present invention. It is a front view which shows the state which expand | deployed the floor support part in FIG. It is explanatory drawing of the attachment structure of the floor part in the scaffold of FIG. It is a perspective view which shows the state which installed the scaffold of FIG. 1 in the folding | returning part. (A) And (b) is a top view which shows the floor support part at the time of applying to the stairs from which a folding direction differs. It is a perspective view which shows the state which removed the board | plate material by this side. It is a perspective view which shows the state which laid the work board between the upper floors. It is a perspective view which shows the state which flipped up the board | plate material of the near side in the scaffold which concerns on 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant descriptions are omitted.

  FIG. 1 is a perspective view of a scaffold 1 according to the first embodiment. As shown in FIG. 1, the scaffold 1 is temporarily installed on a staircase when a building or the like is constructed or renovated. A temporary floor surface is formed by temporarily installing the scaffold 1 on the steps 20 having steps (see FIG. 4). The worker A can get on the scaffold 1 and perform internal construction work or equipment work on the upper part of the stairs 20.

  The scaffold 1 is a scaffold temporarily installed on a so-called U-turn staircase 20 that is folded 180 degrees in the middle. The scaffold 1 is temporarily installed on the folded portion 21 of the stairs 20. The U-turn staircase includes a staircase that folds to the right with respect to the ascending direction and a staircase that folds to the left. The scaffold 1 can be used for any type of staircase that folds back to the left or right, that is, a staircase with a different right and left hand.

  The scaffold 1 includes a flat plate-like floor portion 2 on which the worker A rides and a floor support portion 10 that stands on the folded portion 21 and supports the floor portion 2.

  First, the floor support unit 10 will be described. The floor support portion 10 includes a first leg body 11 and a second leg body 12 that face each other, and a connecting body 13 that connects the first leg body 11 and the second leg body 12. . Each of the first leg body 11 and the second leg body 12 is a substantially rectangular frame made of a plurality of rod-shaped members. The 1st leg 11, the 2nd leg 12, and the connection body 13 are metal.

  As shown in FIG.1 and FIG.2, the 1st leg 11 has the leg part 11a and the leg part 11b which are arrange | positioned in parallel with each other while extending in the up-down direction. The pair of foot portions 11 a and 11 b corresponds to a side frame in the first leg body 11. The legs 11a and 11b are connected by an upper frame 11c at the upper end. Further, the foot portions 11a and 11b are connected to each other at the lower portion by a lower frame 11d. The foot portions 11a and 11b extend below the lower frame 11d. At the lower ends of the foot portions 11a and 11b, truncated cone-shaped lower end plates 11f and 11g each having a non-slip rubber plate on the bottom surface are provided.

  The second leg 12 has a foot 12a and a foot 12b that extend in the vertical direction and are arranged in parallel to each other. The pair of feet 12 a and 12 b corresponds to a side frame in the second leg 12. The legs 12a and 12b are connected by an upper frame 12c at the upper end. Further, the legs 12a and 12b are connected to each other at the lower portion by a lower frame 12d. The legs 12a and 12b extend below the lower frame 12d. At the lower ends of the foot portions 12a and 12b, truncated cone-shaped lower end plates 12f and 12g having a non-slip rubber plate on the bottom surface are provided.

  In the first leg 11 and the second leg 12, the bottom surfaces of the lower end plates 11f, 11g, 12f, and 12g are in contact with the step plate surfaces of the stairs 20 (for example, the first step plate surfaces 21a and 21d in FIG. 4). It is erected like this.

  Here, the length of the first leg 11 in the vertical direction is shorter than the length of the second leg 12 in the vertical direction. More specifically, the foot portions 11a and 11b are shorter than the foot portions 12a and 12b.

  The foot portion 11a is provided with an expansion / contraction mechanism 11e below the connection position with the lower frame 11d. The telescopic mechanism 11e has a function of freely adjusting the extension length of the foot portion 11a below the lower frame 11d. The position of the lower end of the foot portion 11a (the bottom surface of the lower end plate 11f) is a predetermined length from the position equal to the foot portion 11b indicated by the solid line in FIG. 2 by the telescopic mechanism 11e than the foot portion 11b indicated by the phantom line in FIG. The position can be adjusted up to a position extending downward. The predetermined length here corresponds to, for example, a step corresponding to one step.

  The foot portion 12b is provided with an expansion / contraction mechanism 12e below the connecting position with the lower frame 12d. The telescopic mechanism 12e has a function of freely adjusting the extending length of the foot 12b below the lower frame 12d. By the expansion / contraction mechanism 12e, the position of the lower end of the foot 12b (the bottom surface of the lower end plate 12g) is a predetermined length from the position equal to the foot 12a shown by the solid line in FIG. 2 than the foot 12a shown by the phantom line in FIG. The position can be adjusted up to a position extending downward. The predetermined length here corresponds to, for example, a step corresponding to one step.

  The lengths of the foot 11b of the first leg 11 and the foot 12a of the second leg 12 are fixed. The length of the foot portion 11b is shorter than the length of the foot portion 12a, for example, by a step of 2 to 6 steps. In addition, you may provide an expansion-contraction mechanism in all the foot parts 11a, 11b, 12a, 12b, and you may provide an expansion-contraction mechanism in any one leg part. Further, any of the foot portions 11a, 11b, 12a, and 12b may not be provided with a telescopic mechanism, and the lengths of the foot portions 11a, 11b, 12a, and 12b may be determined in advance.

  The coupling body 13 has a bar-shaped upper frame 13a and a lower frame 13b that extend in the horizontal direction and are arranged in parallel to each other. The lengths of the upper frame 13a and the lower frame 13b are equal.

  Both ends of the upper frame 13 a are connected to the foot 11 a of the first leg 11 and the foot 12 a of the second leg 12. The connecting portions 13f and 13f provided at both ends of the upper frame 13a have cylindrical portions extending in the vertical direction. The connecting portions 13f and 13f hold the foot portions 11a and 12a at positions slightly lower than the upper end portions of the foot portions 11a and 12a. Each of the foot portions 11a and 12a is disposed in a cylindrical portion of the connecting portions 13f and 13f and is rotatable with respect to the upper frame 13a.

  Further, both ends of the lower frame 13 b are connected to the foot 11 a of the first leg 11 and the foot 12 a of the second leg 12. The connecting portions 13g and 13g provided at both ends of the lower frame 13b have cylindrical portions extending in the vertical direction. The connecting portions 13g and 13g hold the foot portions 11a and 12a at positions slightly higher than the connecting positions with the lower frames 11d and 12d of the foot portions 11a and 12a. Each of the foot portions 11a and 12a is disposed in a cylindrical portion of the connecting portions 13g and 13g and is rotatable with respect to the lower frame 13b.

  The upper frame 13a and the lower frame 13b are connected by a vertical frame 13e extending in the vertical direction. The upper frame 13a and the lower frame 13b are provided with expansion / contraction mechanisms 13c and 13d, respectively, that allow the length between the connecting position with the vertical frame 13e and the foot 12a to be adjusted.

  In the floor support portion 10 having the above-described configuration, the first leg 11 is rotatable around the axis X1 of the foot portion 11a held by the connecting body 13. Further, the second leg 12 is rotatable around the axis X <b> 2 of the foot 12 a held by the connecting body 13. That is, each of the first leg body 11 and the second leg body 12 is attached to the connecting body 13 so as to be rotatable around the respective axis lines X1, X2 extending in the vertical direction.

  The first leg 11 and the second leg 12 are positioned on one side and the other side of the plane with reference to a position parallel to the plane including the axis lines X1 and X2 (deployed state shown in FIG. 2). It can be rotated at least 90 degrees (see also FIGS. 5A and 5B).

  Next, the floor 2 will be described. As shown in FIG. 1, the floor portion 2 is composed of two floor plates 3 and 4 arranged in parallel in a direction (depth direction shown in FIG. 4) orthogonal to a plane including the axes X <b> 1 and X <b> 2. The floor boards 3 and 4 are made of steel. The floor boards 3 and 4 have a rectangular shape having a long side slightly longer than the length of the connecting body 13 in the extending direction (the width direction shown in FIG. 4).

  C-shaped springs 6 are fixed to the lower surfaces of both end portions of the floor plates 3 and 4 in the longitudinal direction (width direction shown in FIG. 4) as grip members for gripping the legs 12 and 13 (see FIG. 3). When the upper frames 11c and 12c of the legs 12 and 13 are fitted into the spring 6, the spring 6 holds the upper frames 11c and 12c, and the first leg 11 and the second leg 12 are fixed. The By attaching the floor plates 3 and 4, the first leg body 11 and the second leg body 12 are fixed at a rotational position perpendicular to the plane including the axes X 1 and X 2, that is, the vertical plane including the coupling body 13. The Further, the floor plates 3 and 4 are detached from the upper frames 11c and 12c by being pulled upward. Thus, the floor boards 3 and 4 are detachable with respect to the floor support part 10.

  The usage method of the scaffold 1 demonstrated above is demonstrated. FIG. 4 is a perspective view showing a state in which the scaffold 1 is installed on the folded portion 21 of the U-turn type staircase 20. Here, a case will be described in which the scaffold 1 is temporarily installed on the staircase 20 that is folded to the right based on the ascending direction.

  The stairs 20 are stairs provided between the first floor and the second floor in a detached house, for example. The staircase 20 has a shape that is folded back 180 degrees at the folded portion 21. The stairs 20 includes the folded portion 21, a lower straight portion 22 that linearly connects the first floor and the folded portion 21, and an upper straight portion 23 that linearly connects the folded portion 21 and the second floor. Have. The folded portion 21 has four substantially fan-shaped steps of a first step plate surface 21a, a second step plate surface 21b, a third step plate surface 21c, and a fourth step plate surface 21d in order from the lowest. A plate surface is formed.

  When the scaffold 1 is temporarily installed on the folded portion 21 of the staircase 20 shown in FIG. 4, the lengths of the foot portion 11a and the foot portion 11b are equal. Moreover, the length of the foot part 12a and the foot part 12b is equal. The foot portions 11a and 11b are erected on the highest fourth step plate surface 21d, and the foot portions 12a and 12b are erected on the lowest first step plate surface 21a. Here, the length of the foot portions 11a and 11b is made shorter by three steps than the length of the foot portions 12a and 12b, and as a result, the floor portion 2 is kept horizontal. Furthermore, the height of the upper surface of the floor portion 2 is equal to the height of the floor 26 (see FIG. 8) on the second floor.

  Fig.5 (a) is a top view which shows the floor support part 10 in the case shown in FIG. As shown in FIG. 5A, the connecting body 13 is disposed along the edge 31 on the far side in the depth direction of the folded portion 21. The first leg 11 is disposed along the side edge 33 that communicates with the upper straight portion 23, and the second leg 12 is disposed at the side edge 32 that communicates with the lower straight portion 22. Arranged along. That is, the floor support portion 10 is disposed along the end edges 31 to 33 that are the outer end edges of the folded portion 21, and has a U shape in plan view.

  With the above configuration, the floor support portion 10 forms a folded passage 15 inside thereof. The folding path 15 is defined by the legs 11 and 12 on both sides in the width direction, the connecting body 13 on the back side in the depth direction, and the floor portion 2 and the stepped plate surfaces 21a to 21d on both sides in the vertical direction. ing. A substantially trapezoidal open portion 16 having a foot portion 11b as an upper bottom and a foot portion 12b as a lower bottom is formed on the near side in the depth direction of the folded passage 15 (see FIG. 4). Even in a state where the scaffold 1 is temporarily installed in the folded-back portion 21, the folded-back passage 15 allows other workers to move up and down the stairs 20.

  According to the scaffold 1, the worker A can get on the floor portion 2 and perform various operations above the folding portion 21 by temporarily setting the folding portion 21. In addition, other workers can move up and down the stairs 20 while passing through the turn-back passage 15 formed inside the floor support portion 10. Therefore, even when the scaffold 1 is temporarily installed on the folded portion 21 of the U-turn type staircase 20, the scaffold 1 is prevented from becoming an obstacle, and other workers can easily ascend and descend the staircase 20.

  This effect is remarkably exhibited when the building is a small building such as a detached house and only one narrow staircase is installed. In addition, the above-described effect can be remarkably exhibited even when it is difficult to temporarily install a construction staircase or an elevator on the outside.

  Further, the first leg body 11 and the second leg body 12 that face each other, and the coupling body 13 that couples the leg bodies 11 and 12 are arranged along the outer end edges 31 to 33 of the folded portion 21. In order to form a U shape in plan view (see FIG. 5A), the floor support portion 10 is formed with an opening portion 16 that is open toward the front side in the depth direction of the folded portion 21. The opening 16 serves as an entrance / exit of the return passage 15 so that other workers can easily enter and exit the return passage 15. Furthermore, since the floor support portion 10 is formed in a U-shape to form the folded passage 15, the floor support portion 10 functions as a guide when another worker moves up and down the stairs 20. For example, even when the outer wall of the folded portion is not completed during the construction of the building, the floor support portion 10 can prevent the other worker who goes up and down the stairs 20 from falling outside.

  Moreover, since each of the 1st leg 11 and the 2nd leg 12 is fixed by the floor part 2, the above-mentioned U-shaped form is formed reliably. In addition, since each of the first leg 11 and the second leg 12 is fixed at a rotational position perpendicular to the plane including the axes X1 and X2, the first leg 11 and the second leg are fixed. The first legs 11 and the second legs 12 are kept parallel to each other without the distance between the bodies 12 expanding downward. As a result, the stability as a scaffold is enhanced.

  The above effect is particularly prominent when the scaffold 1 is temporarily installed on the stairs 20 and 40 that are not right and left as shown in FIGS. 5 (a) and 5 (b). That is, the floor support portion 10 can be changed to a plane-symmetrical shape by rotating each of the first leg 11 and the second leg 12 by 180 degrees around the connecting body 13. Therefore, either the staircase 20 that turns back to the right or the staircase 40 that turns back to the left is on the higher step plate (the step plate surface 21d in FIG. 5A or the step plate surface 41d in FIG. 5B). The first leg 11 is erected and the second leg 12 is erected on the lower step plate (the step plate surface 21a in FIG. 5 (a) or the step plate surface 41a in FIG. 5 (b)). The folding path 15 can be easily formed by providing the connecting body 13 along the end edge 31 on the back side of the folding parts 21 and 41. Thus, since the scaffold 1 can be applied regardless of the U-turn direction of the stairs, the versatility is very high.

  Furthermore, at the time of storage without using the scaffold 1, the floor 2 can be removed and the first leg 11 and the second leg 12 can be folded to store the floor support 10 in a compact manner.

  In addition, as shown in FIG. 6, by removing the floor plate 4 on the near side in the depth direction from the floor support portion 10, a rectangular opening portion 17 is formed on the upper surface on the near side of the scaffold 1. Therefore, even if the entire scaffold 1 is not moved or separated, the degree of freedom in handling, for example, when transporting materials can be improved, and the work by other workers can be performed more smoothly.

  In the above case, the first leg 11 and the second leg 12 are fixed by the floor board 3 and kept parallel to each other by leaving the floor board 3 on the back side in the depth direction on the floor support 10. Therefore, the stability of the scaffold 1 can be maintained.

  In addition, since the length of the foot portion 11a and the foot portion 12b is adjustable, even when the first leg body 11 or the second leg body 12 straddles two corrugated plate surfaces having different heights, By adjusting the lengths of the foot portions 11a and 12b, the scaffold 1 can be temporarily installed without any trouble and stably.

  Further, as shown in FIG. 7, since the height of the floor 2 is equal to the height of the floor 26 on the second floor, a work plate 27 can be installed between the floor 2 and the floor 26 on the second floor. Also, a flat floor can be temporarily installed above the straight portion 23 that connects the folded portion 21 and the second floor.

  The U-turn type staircase often has a complicated structure of the folded portion, such as a plurality of step plates formed in a fan shape. According to the scaffold 1, the scaffold 1 can be temporarily and easily set up while securing a passage for other workers, regardless of the folded portion of any configuration.

  FIG. 8 is a perspective view of a scaffold 1A according to the second embodiment. The scaffold 1A of FIG. 8 is different from the scaffold 1 of the first embodiment in that a floor 2A composed of two floor boards 3A and 4A connected to each other by a hinge 50 is provided instead of the floor 2. It is. In this case, a rectangular opening portion 17 is formed on the upper surface on the near side of the scaffold 1A by jumping up the floor plate 4A on the near side, detaching from the floor support portion 10 and overlapping the floor plate 3A. Therefore, the same operation and effect as the above-described scaffold 1 can be obtained.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment. For example, the first leg body and the second leg body are not limited to a frame body composed of a plurality of rod-shaped members, and may be composed of a rod-shaped member and a plate-shaped member. Moreover, a connection body is not restricted to the case where the leg bodies 11 and 12 are connected by the upper frame 13a and the lower frame 13b, A plate-shaped member may be sufficient. In order to keep the legs 11 and 12 parallel to each other, the connecting body is connected to each of the legs 11 and 12 at two or more points in the vertical direction, or continuously connected in the vertical direction. Also good.

  The height of the upper surface of the floor may be slightly different from the height of the floor 26 on the second floor. Further, the floor portion is not limited to the case where the floor portion is composed of the two floor plates 3 and 4, and may be composed of three or more plate materials, or may be a single plate material. The first leg, the second leg, and the connection body may be made of resin. The floor board may be wooden.

  Further, the floor support portion is not limited to a U-shape in plan view, and may be a trapezoidal shape with the front side in the depth direction open, or a shape curved so as to swell toward the back side in the depth direction. Also good.

  DESCRIPTION OF SYMBOLS 1,1A ... Scaffolding, 2, 2A ... Floor part, 3, 3A ... Floor board (plate material), 4, 4A ... Floor board (plate material), 10 ... Floor support part, 11 ... First leg, 11a, 11b ... Foot Part, 12 ... second leg, 12a, 12b ... foot part, 13 ... connector, 20,40 ... stairs, 21,41 ... turned part, 26 ... second floor (upper floor), 31- 33 ... an end edge (outer end edge), A ... an operator, X1 ... a first axis, X2 ... a second axis.

Claims (6)

It is a scaffold that is temporarily installed at the folded part of the U-turn staircase,
The floor on which the operator rides;
A floor support portion that supports the floor portion and is disposed along an outer edge of the folded portion,
The said floor support part forms the return channel | path of the said staircase inside, The scaffold characterized by the above-mentioned. The floor support portion includes first and second legs that oppose each other, and a connecting body that connects the first and second legs,
The scaffold according to claim 1, wherein the floor support portion has a U shape in a plan view.   Each of the first and second legs is attached to the connecting body so as to be rotatable about first and second axes extending in the vertical direction, and the first and second axes are provided. The scaffold according to claim 2, wherein the scaffold is fixed by the floor portion at a rotational position perpendicular to a plane including the base plate.   The flat plate-like floor portion is composed of a plurality of plate members whose both ends are supported by the first and second legs and arranged in parallel in the depth direction of the folded portion, and at least the front-side plate member is the floor support. The scaffold according to claim 2 or 3, wherein the scaffold is detachable from the part. At least one of the first and second legs has a pair of feet that contact the stepped plate surface of the staircase,
The scaffold according to any one of claims 1 to 4, wherein the length of at least one of the pair of foot portions is adjustable.   The scaffold according to any one of claims 1 to 5, wherein a height of the floor portion corresponds to a floor height of an upper floor.

Images