JP7389974B1 - Temporary scaffolding and stairs for temporary scaffolding - Google Patents

Abstract

An object of the present invention is to easily move to treads of different heights on a temporary scaffold. [Solution] A temporary scaffold 10 has a plurality of treads 40 on which a person can walk, a plurality of brackets 30 that support the plurality of treads 40, and an axis perpendicular to the ground, and each support A plurality of support columns 20 to which members are fixed are provided, and the plurality of treadboards 40 include a rectangular first treadboard 40A and a first treadboard 40A arranged in line in the longitudinal direction. A rectangular second tread 40B having a widthwise dimension smaller than that of the second tread 40B, and a position on the side of the second tread 40B that allows a person to ascend or descend from a position lower than the second tread 40B. It is equipped with stairs 50 and 60 that allow for. [Selection diagram] Figure 1

Description

The present disclosure relates to temporary scaffolding and stairs for temporary scaffolding.

BACKGROUND OF THE INVENTION Conventionally, when a building such as an apartment or a single-family house undergoes expansion, renovation, or renovation work (painting, etc.), temporary scaffolding is erected around the building for on-site workers to work at heights. Temporary scaffolding is constructed by combining metal pipes vertically and horizontally on the ground, with a large number of horizontal arms installed at the same or different heights. treads are placed side by side.

Each footboard has a rectangular shape, and its longitudinal end is supported on a cross arm, thereby fixing the position of the footboard and allowing a person to walk on the footboard. A large number of treadboards are arranged in a row in the longitudinal direction, and a plurality of treadboards are arranged in a row in the transverse direction. Stairs will also be installed to allow site workers to move between treads of different heights. Above the position where the stairs are installed, a space is formed in which no treads are attached so that people going up and down can pass (see Patent Document 1 below).

Japanese Patent Application Publication No. 11-36572

By the way, depending on conditions such as the site of the building, the distance between the building where the temporary scaffolding is installed and the adjacent building may become narrow, and it may not be possible to secure sufficient space for installing the temporary scaffolding. In such a case, it may be possible to install temporary scaffolding in a narrow site by reducing the number of rows of treads to one row in the short direction of the treads. However, when the treads are arranged in a single row, there is no longer space for stairs that were previously provided on the treads in the next row, making it impossible to install stairs in the next row, making it difficult to move between treads of different heights. There's a problem. Therefore, in order to move to treads at different heights, it is necessary to install a ladder that extends vertically, or for workers to climb onto the treads above by grasping braces diagonally installed between metal pipes for reinforcement. There was a problem in that it was not easy to move to a tread of a different height.

One of the purposes of the present disclosure is to provide a technique that allows a user to easily move to a treadboard of a different height in a temporary scaffolding where the size in the width direction can be easily suppressed.

A temporary scaffold that is one aspect of the present disclosure includes a plurality of treadboards on which a person can walk, a plurality of support members that support the plurality of treadboards, and extends upward with respect to the ground, and each of the support members is fixed. a plurality of support columns, the plurality of treadboards are arranged in line in the longitudinal direction of the elongated first treadboard, and the first treadboard a second elongated footboard having a widthwise dimension smaller than that of the second footboard, and a side area of the second footboard that allows a person to ascend and descend from a position lower than the second footboard. Equipped with stairs to make it possible.

A staircase for temporary scaffolding, which is one aspect of the present disclosure, includes a longitudinal first tread, and the first tread is arranged side by side in the longitudinal direction, and the longitudinal tread has a widthwise dimension smaller than that of the first tread. The plurality of treadboards in a temporary scaffold comprising a plurality of treadboards having second treadboards having a shape, a plurality of support members supporting the plurality of treadboards, and a plurality of support sections to which each of the support members is fixed. A temporary scaffolding staircase that can be ascended and descended in a direction inclined to the staircase, and is disposed in a region to the side of the second tread.

According to the technology according to the present disclosure, a user can easily move to treads of different heights in a temporary scaffold whose size in the width direction can be easily suppressed.

A perspective view showing the temporary scaffolding of Embodiment 1 A plan view showing the second and third layers, including the second tread and stairs, with other parts omitted. A plan view of the first layer, including the second tread and stairs, with other parts omitted. Side view showing stairs with hooks between the first and second tiers and between the second and third tiers Side view showing a staircase with a movable wedge between the ground and the first tier Plan view showing a staircase with a movable wedge between the ground and the first tier A plan view including a second tread and stairs of Embodiment 2 and omitting other parts Side view showing the staircase with a wedge for fixation to the receiving part

A temporary scaffold that is one aspect of the present disclosure includes a plurality of treadboards on which a person can walk, a plurality of support members that support the plurality of treadboards, and extends upward with respect to the ground, and each of the support members is fixed. a plurality of support columns, the plurality of treadboards are arranged in line in the longitudinal direction of the elongated first treadboard, and the first treadboard a second elongated footboard having a widthwise dimension smaller than that of the second footboard, and a side area of the second footboard that allows a person to ascend and descend from a position lower than the second footboard. Equipped with stairs to make it possible.
This temporary scaffolding allows for the first tread and the second tread, which are smaller in the width direction, to be placed side by side in the width direction. By reducing the dimension in the width direction of a part of the area (second footboard), the space on the side of the second footboard can be expanded. On top of that, stairs can be placed using the expanded lateral space to allow people to go up and down. Even if there is not enough space (particularly the space in the width direction) to install the temporary scaffold, this temporary scaffold can be installed on the stairs by utilizing the lateral space expanded by suppressing the width of the second tread. This makes it easier to reduce the size of the temporary scaffold in the width direction, making it easier for users to move to treads at different heights.

In the above temporary scaffolding, the stairs include a base, a plurality of steps provided at predetermined intervals on the base, for people to walk on when going up and down, and arranged on at least one end side of the base; The device may include a locked portion that is locked to at least one of the support member and the support column. In this way, a staircase for people to go up and down can be formed with a simple configuration.

In the above temporary scaffold, the support member may be a bracket fixed to the support column, and the bracket may include a horizontal support section extending in the horizontal direction. The staircase may include a pair of locked parts that are locked to the horizontal support part. In this way, the pair of locked parts are locked to the bracket, so that the stairs can be held in a stable posture.

In the above temporary scaffolding, the support portion may have a receiving portion for receiving the locked portion at a position at a predetermined height. In this way, since the locked portion is received by the receiving portion of the support column, the structure for locking the stairs can be reduced or omitted from the supporting member. For example, it becomes possible to use a larger portion of the support member to place the second footboard.

In the temporary scaffolding described above, a through hole may be formed in the receiving portion, and the locked portion may be press-fitted into the through hole. In this way, the stairs can be firmly fixed to the support section with a simple operation.

In the above temporary scaffold, the locked portion may be rotatably connected to the end of the base. In this way, since the position of the locked part can be easily moved with respect to the base, the degree of freedom in the position where the stairs are installed can be improved.

In the above temporary scaffold, the base may include a base main body and an extendable part whose length can be changed with respect to the base main body. In this way, the length of the stairs can be changed by the extendable part of the base, so even if the position of the receiving part that locks the locked part of the stairs is changed, the locked part of the staircase can be locked at a different position. Stairs can be installed by locking the stop portion.

In the above temporary scaffold, a plurality of first treadboards and one or more second treadboards are arranged in the longitudinal direction at a predetermined step and are supported by a plurality of support members arranged at the predetermined step. It's okay. Further, the plurality of treadboards arranged in the longitudinal direction at the predetermined step are arranged such that the second treadboards are arranged closer to one side in the width direction of the plurality of first treadboards arranged in the longitudinal direction. Alternatively, a plurality of the first tread plates may be provided so as to protrude further to the other side in the width direction than the second tread plates. Furthermore, a plurality of the first treadboards and one or more of the second treadboards are arranged in the longitudinal direction at a step lower than the predetermined step, and are supported by a plurality of the support members arranged at the lower step. It's okay. The plurality of treadboards arranged in the longitudinal direction on the low step are arranged such that the second treadboards are arranged closer to one side in the width direction of the plurality of first treadboards arranged in the longitudinal direction. A plurality of the first treadboards may be provided in a configuration that protrudes further to the other side in the width direction than the second treadboards. The lateral area on the other side in the width direction of the second treadle on the predetermined step may be a region where the treadle is not arranged, and the side area on the other side in the width direction of the second treadle on the lower step may be a region where the treadle is not arranged. The horizontal area may be an area where the footboard is not placed. Furthermore, the staircase is provided with a configuration that straddles a lateral region on the other side in the width direction of the second tread on the predetermined step and a lateral region on the other side in the width direction of the second tread on the lower step. It may be. The upper surface of the first tread may be integrally formed, and the upper surface of the second tread may be integrally formed. The width of the step portion of the staircase may be smaller than the width of the first step.
In this way, in the temporary scaffolding, a tread area (an area where a plurality of treads are lined up in the longitudinal direction) where a person can walk can be secured in the longitudinal direction on each of the predetermined step and the step lower than the predetermined step. The width size of these step board areas can be suppressed to a size that does not deviate greatly from the width size of the first step board whose upper surface portion is integrally constructed. Furthermore, since a narrow area (second tread) is provided in a part of the tread area of each step, the tread can be secured while further reducing the width in a part of the tread area where the width has been suppressed. be able to. A plurality of first tread plates are arranged in such a manner that the second tread plates are arranged side by side on one side of the first tread plate in the width direction, and the plurality of first tread plates are arranged so as to protrude from the second tread plate to the other side in the width direction. Since the lateral area on the other side in the width direction of each second tread plate is an area where no tread plate is placed, a wider space is secured in the lateral area on the other side in the width direction of the second tread plate. be done. A staircase is provided in such a space, and the staircase includes a lateral area on the other side in the width direction of the second tread on the predetermined step and a lateral area on the other side in the width direction of the second tread on the lower step. Since it is arranged in a straddling configuration and the width of the step portion is smaller than the width of the first tread, it is possible to easily move to a tread of a different height with a configuration that is not bulky in the width direction. In particular, in the above-mentioned side region, the end of the second tread on the other side in the width direction is recessed, so that the user can move closer to the one side in the width direction than the end on the other side in the width direction of the first tread. This allows users to move with more space when using stairs to straddle the tread area with reduced width. can.

In the above temporary scaffolding, the width of the second footboard may be one-half or more of the width of the first footboard. In this way, it is possible to secure a space for installing a staircase on the side of the second tread while ensuring that the size of the second tread does not pose a problem for a person to walk on.

A staircase for temporary scaffolding, which is one aspect of the present disclosure, includes a longitudinal first tread, and the first tread is arranged side by side in the longitudinal direction, and the longitudinal tread has a widthwise dimension smaller than that of the first tread. The plurality of treadboards in a temporary scaffold comprising a plurality of treadboards having second treadboards having a shape, a plurality of support members supporting the plurality of treadboards, and a plurality of support sections to which each of the support members is fixed. This is a temporary scaffolding staircase that can be ascended and descended in an inclined direction, and is disposed in a region to the side of the second tread. According to this staircase for temporary scaffolding, users can easily move to treads of different heights in the temporary scaffolding whose size in the width direction can be easily suppressed.

<Embodiment 1>
Embodiment 1 will be described with reference to FIGS. 1 to 6. In the following, the same configurations will be given the same reference numerals and the description will be omitted. The temporary scaffolding 10 is provided so as to surround the entire circumference of the building B, for example, but in FIG. Temporary scaffolding will be omitted. In this embodiment, the temporary scaffold 10 is a one-sided scaffold that is assembled and installed around a building B whose site is narrow. In addition, the one-side scaffold is provided with a support section 20 only on one side in the width direction (short direction) of a rectangular step board 40, and a plurality of support supports arranged in a line along the longitudinal direction of the step board 40. The portion 20 supports a plurality of step boards 40 arranged in a row.

As shown in FIG. 1, the temporary scaffolding 10 includes a plurality of support columns 20 arranged in a line at equal intervals, and a plurality of brackets 30 (an example of a "supporting member") fixed to each support structure 20, which are adjacent to each other. It includes a plurality of treads 40 spanned between brackets 30, and a plurality of stairs 50, 60 for people to ascend and descend from the treads 40 at different heights.

The support section 20 includes a support main body 21, a square base plate 22A laid on the ground, and a jack 22B disposed between the support main body 21 and the base plate 22A. The jack 22B has a flat plate placed on the base plate 22A and a shaft portion standing perpendicularly to the flat plate, and the shaft portion is provided with a rotation operation portion that can be rotated by a person. When the upper end of the shaft of the jack 22B is connected to the lower end of the column main body 21, the height of the column 20 is adjusted by rotating the rotary operation section. Each support section 20 is provided in a shaft shape so as to extend upward with respect to the ground, and each bracket 30 is fixed to each support section 20 . The support column 20 is placed on the ground and supported by the ground, and extends upward from the ground in the shape of a rod or column. The support portion 20 may extend vertically from the ground, or may extend slightly inclined with respect to the vertical direction. The support portion 20 has a configuration to which a bracket 30 (supporting member), which will be described later, is fixed.

The support main body 21 has, for example, an axial and cylindrical shape, and has a hollow rod shape. The support main body 21 is provided with a group of receiving parts 23 at equal intervals in the axial direction (vertical direction) of the support main body 21 . In this embodiment, the support main body 21 is provided with receiving portion groups 23 at intervals of 45 cm in the axial direction. Note that the spacing between the receiving portion groups 23 is not limited to this, and may be different. The receiving part group 23 may be fixed to the column main body 21 or may be provided integrally with the column main body 21. In this specification, the vertical up-down direction is referred to as the up-down direction, and in the representative example shown in FIG. 1 etc., the direction in which the support column 20 extends is the up-down direction. Of the directions perpendicular to the up-down direction, the direction in which the plurality of support sections 20 are lined up is the left-right direction. In the example of FIG. 1, the longitudinal direction of the footboard 40 is the left-right direction. The direction perpendicular to the above-mentioned up-down direction and the above-mentioned left-right direction is the front-back direction. In the example of FIG. 1, the direction in which the bracket 30 and the horizontal support portion 31 extend is the front-rear direction. The front-rear direction is the width direction of the footboard 40.

Each receiving portion group 23 includes four receiving portions 23A to 23D (see FIG. 6) provided at intervals in the circumferential direction. Each of the receiving portions 23A to 23D is provided to protrude in the radial direction of the support main body 21, and is shifted in axial position from a pair of receiving portions 23A, 23C provided on opposite sides and with respect to the receiving portions 23A, 23C. , and a pair of receiving portions 23B and 23D provided at positions shifted by 90 degrees in the circumferential direction. Each of the receiving parts 23A to 23D has a rectangular through hole 24 passing through in the axial direction (vertical direction). Note that the shape of the through hole 24 is not limited to this, and may be, for example, circular or polygonal. The receiving parts 23A to 23D of this embodiment use a fastening part (pocket part) into which a wedge-shaped metal piece can be driven. As shown in FIG. 1, handrails 15 are provided at predetermined intervals in the vertical direction on the receiving portions 23A of the adjacent support portions 20 at the same height. The handrail 15 is provided at intervals above and below the footboard 40, and wedge portions that are press-fitted into the receiving portions 23A are provided at both left and right ends of the handrail 15 to protrude downward.

The strut body 21 is constructed by connecting a plurality of divided struts in the axial direction. The divided struts have a diameter slightly smaller at one end in the axial direction than the other end, and are configured such that the upper and lower divided struts fit together and are connected. Pin holes are formed at both ends of the divided struts, and by inserting pins into the pin holes in a connected state, the connected state between the divided struts is maintained. In this embodiment, divided columns of 2.7 m and 3.6 m are connected, and the lengths of the upper and lower divided columns are switched between adjacent column parts 20. Note that the length and arrangement of the split struts are not limited to these, and can be configured with any length or arrangement.

Each bracket 30 is fixed to the support 20 and extends horizontally from the position where it is fixed to the support 20. As shown in FIG. 1, the bracket 30 includes a bar-shaped horizontal support part 31 having a horizontal axis, and an inclined part 33 extending in a direction inclined with respect to the horizontal direction. The side and the proximal end side of the inclined portion 33 are connected by a vertical connecting portion 34 .

A wedge portion 32 (see FIGS. 2 and 3) that protrudes downward is formed at the base end (end on the support column 20 side) of the horizontal support portion 31. The bracket 30 is positioned with respect to the support portion 20 by inserting (press-fitting) the wedge portion 32 into the through hole 24 of the receiving portion 23C. At this time, the base end portion of the inclined portion 33 comes into contact with the side surface of the column portion 20, and the horizontal support portion 31 is fixed so as to be held in a horizontal state. Note that the distal end portion of the horizontal support portion 31 also protrudes downward in a wedge shape, and can be used, for example, for fixing to a support column when used as a two-sided scaffold. Note that the examples disclosed in FIGS. 1 to 3 are examples in which the horizontal support portion 31 is fixed to the support portion 20 so as to extend in the horizontal direction; however, the horizontal support portion 31 may be fixed. Any other configuration may be adopted as long as the configuration is suitable. A footboard 40 is spanned over adjacent brackets 30 fixed to receiving portions 23C of adjacent support columns 20.

Each footboard 40 is a plate-shaped member on which a person can walk, and is configured as a floor material for a person to walk on. The footboard 40 supports the person standing on the footboard 40 from below. Each footboard 40 is made of metal such as iron, steel, or aluminum, and as shown in FIG. It includes a locking holding part 42 that holds the position of the footboard main body 41. The footboard main body 41 includes a frame portion and a net-like portion made of mesh-like metal provided in a space inside the frame portion. The footboard main body 41 has a longitudinal shape, and has a rectangular shape when viewed from above (when viewed from above in the installed state). The longitudinal direction of the tread plate body 41 when viewed from above (rectangular shape) is the longitudinal direction of the tread plate 40, and the lateral direction when the tread plate body 41 is viewed from above (rectangular shape) is the lateral direction of the tread plate 40. The thickness direction of the rectangular upper surface part of the tread body 41 (the part on which a person rests) is the vertical direction, and the longitudinal direction of the tread board 40 is perpendicular to the thickness direction. This is the long side direction of the upper surface portion (plate portion). The lateral direction of the footboard 40 is a direction perpendicular to the longitudinal direction and the thickness direction, and is the lateral direction of the upper surface portion (plate portion).

The pair of locking holding parts 42 are provided at both ends of the tread body 41 in the longitudinal direction, and are spaced apart from each other in the lateral direction of the tread body 41 at each end of the tread body 41. . The locking holding part 42 is a hook-shaped hook, and the horizontal support part 31 is allowed to enter through the opening of the hook, and the horizontal support part 31 that has entered the hook is prevented from leaving by a sliding part that changes the opening width. . The locking holding part 42 extends in the longitudinal direction of the tread plate main body 41 toward the side away from the tread plate main body 41 and is arranged to be placed on the horizontal support part 31 . When the locking holding parts 42 on both sides of the footboard main body 41 are respectively locked to the horizontal support parts 31, the footboard main body 41 is restricted from moving in the longitudinal direction and the width direction.

The plurality of treadboards 40 include a first treadboard 40A and a second treadboard 40B having a smaller dimension in the width direction than the first treadboard 40A. The second treadboard 40B is arranged in line with the first treadboard 40A at different positions in the longitudinal direction. The position of the second treadboard 40B in the lateral direction is such that the side surface (side edge) of the second treadboard 40B on the building B side is along the side surface (side edge) of the first treadboard 40A on the building B side. A second footboard 40B is spanned between adjacent brackets 30. In each stage, the second treadle 40B is arranged closer to one side in the width direction of the first treadle 40A. In each stage, the side edges of the plurality of first tread boards 40A on one side in the width direction and the side edges of the second tread boards 40B on one side in the width direction are arranged so as to line up along a predetermined direction. . In each step, the position of the side edge on the other side in the width direction of the second tread board 40B is wider than the position in the width direction of each side edge on the other side in the width direction of the plurality of first tread boards 40A. It has a concave shape so that it is on one side in the direction.

The temporary scaffolding 10 of this embodiment is provided with a plurality of steps in which a plurality of step boards 40 are lined up in a predetermined direction at intervals in the vertical direction. In the example of FIG. 1, in each stage (each layer) 10A to 10C where the tread plates 40 are lined up, a plurality of (three in this embodiment) first tread plates 40A and one second tread plate 40B are provided. It is being In the example of the temporary scaffolding 10 in FIG. 1, when going up one step (layer), the position of the second tread 40B is shifted to the position where the first tread 40A on the right side was. The first footboard 40A is configured such that the first width portion continues for a first predetermined range in the longitudinal direction. In the example of FIG. 2, the width of the maximum width portion of the first footboard 40A is the first width. The second footboard 40B is configured such that a portion having a second width smaller than the first width continues for a second predetermined range in the longitudinal direction. In the example of FIG. 2, the width of the maximum width portion of the second footboard 40B is the second width. In this embodiment, the length of the first tread plate 40A and the second tread plate 40B is 180 cm, the width dimension of the first tread plate 40A (the size of the first width) is 40 cm, and the length of the second tread plate 40A is 40 cm. The width dimension (the size of the second width) of the footboard 40B is 25 cm. That is, the width dimension of the second tread plate 40B is set to be 1/2 or more and 4/5 or less of the width dimension of the first tread plate 40A. Thereby, the side surface (side edge) on the near side (stair side) of the second step board 40B is recessed relative to the side surface (side edge) of the first step board 40A. Note that the dimensions and lengths of the first treadle 40A and the second treadle 40B are not limited to these, and can be changed to arbitrary numerical values as appropriate.

As shown in FIG. 1, in the side area of the second tread 40B, there are stairs 50, 60 on each step (each layer) that allow people to ascend and descend between the second tread 40B and the lower side. It is provided. Specifically, the stairs 50 are located between the first step (first layer) 10A and the second step (second layer) 10B, and between the second step (second layer) 10B and the third step (third layer). ) 10C, and the stairs 60 are provided between the ground and the first step (first layer) 10A.

The stairs 50 and 60 are both made of metal such as iron or aluminum, and as shown in FIGS. 2 and 3, the two stairs 50 include a base 51, a step part 52, and a locked part 53. , one staircase 60 includes a base portion 61, a step portion 52, and a locked portion 65.

The base 51 has a portion near its one end supported by a horizontal support 31 provided on one of the stages, and a portion near its other end supported by a horizontal support 31 provided on another stage. It is a longitudinal (shaft-shaped, rod-shaped, etc.) portion that is disposed astride the two horizontal support portions 31 so as to be supported by the horizontal support portions 31, and is disposed so as to extend obliquely with respect to the vertical direction. The portion of the base 51 that is widest in the front-back direction (width direction) is smaller in width than the portion of the second tread plate 40B that is widest in the front-back direction (width direction). In the example of FIG. 2, the base 51 includes a rod-shaped portion 51A having a constant cross-sectional shape and a U-shaped branch portion 51B, and the cross-sectional shape may be any shape such as a circular, oval, or rectangular shape. It can be done. Although the rod-shaped portion 51A of this embodiment is linear, the rod-shaped portion 51A is not limited to this, and may be curved. For example, the base may be curved over the entire length.

A pair of locked portions 53 are provided at the tip of the branch portion 51B. The step portion 52 is a rectangular plate with a predetermined thickness, and has an uneven surface formed on its upper surface to prevent slipping when stepped on. The width of the portion of the step portion 52 having the maximum size in the width direction (front-back direction) is smaller than the width (above-mentioned second width) of the second step board 40B in the width direction (front-back direction).

As shown in FIG. 4, each locked portion 53 is an annular hook that can be fixed to the horizontal support portion 31 of the bracket 30. Each hook is hook-shaped and allows the horizontal support part 31 to enter through the opening, and the horizontal support part 31 that has entered the hook is prevented from leaving by a sliding part that changes the width of the opening. The distance between the pair of locked parts 53 is determined according to the difference between the width of the first tread plate 40A and the width of the second tread plate 40B. The width dimension can be approximately the same or slightly smaller than the width dimension of the step portion 52. In the example of FIG. 2, the distance between the pair of locked parts 53 is smaller than the distance between the pair of locking holding parts 42. The width of the maximum width portion of the pair of locked portions 53 is smaller than the width of the maximum width portion of the pair of lock holding portions 42 . The width of the maximum width portion of the pair of locked portions 53 is smaller than the width (above-mentioned second width) of the second footboard 40B in the width direction (front-back direction).

As shown in FIGS. 5 and 6, the base 61 includes a cylindrical base body 62, an expandable part 63 that is coaxially connected to the base body 62 and is expandable and retractable, and is provided at both ends of the base 61 in the axial direction. and a rotatable rotating part 64. The outer shape of the cross section of the base body 62 can be any shape, such as a circle, an oval, or a rectangle. The extensible portion 63 has a smaller diameter than the outer diameter of the base body 62, and is inserted into the inside of the base body 62 so that the entire length of the base portion 61 can be expanded and contracted. The rotating portion 64 is rotatably connected to the respective ends of the base body 62 and the extensible portion 63 by pins P at both ends of the base 61 in the axial direction.

The step portions 52 have a rectangular flat plate shape on which a person can rest their feet, are arranged at equal intervals in the axial direction of the base portion 61, and are fixed to the base body 62 by fixing means such as welding. The upper surface of the step portion 52 is provided with anti-slip irregularities. When the stairs 50, 60 are fixed at predetermined positions on the temporary scaffold 10, the upper surface of the step part 52 is configured to be horizontal.

A locked portion 65 is provided at the tip of the rotating portion 64 . The locked portion 65 is curved in an L-shape with respect to the base main body 62, and includes a wedge-shaped protrusion 66 that can be inserted (press-fitted) into the receiving portions 23A to 23D.

Here, we will focus on the second stage 10B as a predetermined stage. In this case, a plurality of first treadboards 40A and one or more (one in the example of FIG. 1) second treadboards 40B are lined up in the longitudinal direction at the predetermined step (second step 10B), and 10B) is supported by a plurality of brackets 30 (supporting members). The plurality of treadboards 40 arranged in the longitudinal direction in the predetermined step (second step 10B) are arranged closer to one side in the width direction (the building side in FIG. 1) of the plurality of first treadboards 40A arranged in the longitudinal direction. A plurality of first treadboards 40A are provided so as to protrude from the second treadboard 40B to the other side in the width direction (the side opposite to the building in FIG. 1). Even at a step (first step 10A) lower than a predetermined step (second step 10B), a plurality of first treads 40A and one or more (one in the example of FIG. 1) second treads 40B are lined up in the longitudinal direction. At the same time, it is supported by a plurality of brackets 30 (supporting members) arranged at the lower stage (first stage 10A). In the lower step (first step 10A), the plurality of treadboards 40 arranged in the longitudinal direction are arranged such that the second treadboard 40B is arranged closer to one side in the width direction of the plurality of first treadboards 40A arranged in the longitudinal direction. , a plurality of first tread plates 40A are provided in a configuration that protrudes further to the other side in the width direction than the second tread plates 40B.

The first lateral area on the other side in the width direction of the second tread plate 40B in the predetermined step (second step 10B) (in the example of FIG. 1, the area on the opposite side to the building side with respect to the second tread plate 40B) The side area is an area where the footboard 40 is not placed. Adjacent to the other end in the width direction of the second step board 40B (the edge extending in the longitudinal direction of the second step board 40B) at the predetermined step (second step 10B) and one side in the longitudinal direction of the second step board 40B The longitudinal end of the first tread plate 40A on the other side in the longitudinal direction (the edge extending in the width direction of the first tread plate 40A) and the longitudinal side of the first tread plate 40A adjacent to the other side in the longitudinal direction of the second tread plate 40B. An end portion on one side in the direction (an edge extending in the width direction of the first tread plate 40A) forms a concave portion that is concave toward the one side in the width direction, and most of the inner area of the concave portion is It is considered to be a space where no objects exist, and a space through which people can pass. A staircase 50 is arranged so as to pass through the space (the space in the first side region).

The lateral area on the other side in the width direction of the second tread 40B in the lower step (first step 10A) (in the example of FIG. 1, the area on the opposite side to the building with respect to the second tread 40B) The second side area is an area where the footboard 40 is not placed. The other end in the width direction of the second tread board 40B on the lower step (first step 10A) (the edge extending in the longitudinal direction of the second tread board 40B) and the one end in the longitudinal direction of the second step board 40B The end of the adjacent first tread plate 40A on the other side in the longitudinal direction (the edge extending in the width direction of the first tread plate 40A) and the first tread plate 40A adjacent to the other side in the longitudinal direction of the second tread plate 40B. A concave portion recessed toward one side in the width direction is formed by the end portion on one side in the longitudinal direction (the edge extending in the width direction of the first tread plate 40A), and most of the inner area of the concave portion is , a space where no objects exist, and a space through which people can pass. A staircase 50 is arranged so as to pass through the space (the space in the second side region).

The width of the second tread plate 40B at the predetermined step (second step 10B) on the other side in the width direction (the first lateral region) and the second step board 40B at the lower step (first step 10A) A staircase 50 is provided so as to straddle the side area on the other side in the direction (the second side area). The entire top surface of the first step board 40A is configured as an integral single plate. The entire upper surface of the second footboard 40B is configured as an integral single plate. The upper surface portion of the first step board 40A may be a plate-like body without holes, a plate-like body with holes, a net-like plate-like body, or other plate-like bodies. It may be a structure. The upper surface portion of the second footboard 40B may be a plate-like body without holes, a plate-like body with holes, a net-like plate-like body, or other plate-like bodies. It may be a structure. The width of the step portion 52 in the staircase 50 is smaller than the width of the first tread 40A. Specifically, the maximum width of each step portion 52 in the staircase 50 (the width of the maximum width portion of each step portion 52) is smaller than the maximum width of the second tread 40B (the second width). In the example of FIG. 1, a staircase 50 is provided on one side (building side) in the width direction of the plurality of support columns 20 arranged in the horizontal direction, and the staircase 50 is provided between the second tread 40B and the support column 20 in the width direction. 50 are provided.

Next, the assembly of the temporary scaffolding 10 will be explained.
As shown in FIG. 1, the plurality of brackets 30 are arranged in a line, and the wedge portions 32 are press-fitted into the receiving portions 23C corresponding to the treads 40 of the first stage (first layer) 10A to support the plurality of brackets 30. 20. Next, the plurality of first footboards 40A and one second footboard 40B of the first stage (first layer) 10A are placed between the brackets 30 at predetermined positions. Then, using the recessed space on the side of the second tread 40B, the protrusion 66 of the upper locked part 65 of the staircase 60 is attached to the corresponding receiving part 23B near the bracket 30 with a hammer or the like. At the same time, the protrusion 66 of the lower locked part 65 of the staircase 60 is pressed into the corresponding receiving part 23D on the lower side of the adjacent column part 20 by hitting it from above with a hammer or the like. The stairs 60 are built diagonally (see FIGS. 5 and 6).

Next, as shown in FIG. 1, the wedge portion 32 of the bracket 30 is press-fitted into the receiving portion 23C corresponding to the step board 40 of the second stage (second layer) 10B, and the plurality of brackets 30 are attached to the support portion 20. The first step board 40A and the second step board 40B of the second stage (second layer) 10B are bridged between the brackets 30 at predetermined positions. Then, by utilizing the recessed space on the side of the second tread 40B, the upper locked portion 53 of the stairs 50 is locked to the bracket 30, and the lower locked portion 53 of the stairs 50 is locked. , is engaged with the lower bracket 30 of the adjacent support column 20, and the stairs 50 are built diagonally (see FIGS. 2 and 4).

Next, the wedge portions 32 of the brackets 30 are press-fitted into the receiving portions 23A to 23D corresponding to the footboards 40 of the third layer 10C, and the plurality of brackets 30 are fixed to the support portions 20. The footboard 40A and the second footboard 40B are bridged between the brackets 30 at predetermined positions. Then, by utilizing the recessed space on the side of the second tread 40B, the upper locked portion 53 of the stairs 50 is locked to the bracket 30, and the lower locked portion 53 of the stairs 50 is locked. is locked to the lower bracket 30 of the adjacent support section 20, and the stairs 50 are bridged diagonally.
Thereby, the temporary scaffolding 10 will be in an assembled state.

According to the above embodiment, the following actions and effects are achieved.
According to the embodiment described above, it is possible for a person to ascend and descend from a position lower than the second tread plate 40B to a side area of the second tread plate 40B, which is smaller in the width direction than the first tread plate 40A. Stairs 50 and 60 are provided. As a result, even if there is not enough space to install the temporary scaffolding 10 with the stairs 50, 60, the stairs 50, 60 can be installed using the space on the side of the second tread 40B. Therefore, it becomes possible to easily move the footboard 40 to a different height.

Further, the stairs 50 and 60 are provided at predetermined intervals on the base 51, a step portion 52 for people to walk on when going up and down, and on at least one end side of the base 51, and are provided with supporting members and It includes locked parts 53 and 65 that are locked to at least one of the support columns 20.
In this way, the stairs 50 and 60 for people to go up and down can be formed with a simple configuration.

Further, the support member is a bracket 30 fixed to the support column 20, the bracket 30 includes a bar-shaped horizontal support section 31 having a horizontal axis, and the stairs 50 are locked to the horizontal support section 31. A pair of locked parts 53, 53 are provided.
Even in the case of a one-sided scaffold in which the bracket 30 is used, the pair of locked parts 53, 53 are locked to the bracket 30, so that the stairs 50 can be held in a stable posture.

The support portion 20 has receiving portions 23A to 23D at predetermined height positions, and the locked portion 65 is locked to the support portion 20 by being inserted into the receiving portions 23A to 23D.
In this way, for example, the entire width of the bracket 30 can be used to hold the second footboard 40B, so it becomes possible to increase the widthwise dimension of the second footboard 40B.

Furthermore, the locked portion 65 is rotatably connected to the end portion of the base portion 61 .
In this way, the position of the locked part 65 can be easily moved with respect to the base 61, so that the degree of freedom in the position where the stairs 60 are installed can be improved.

Further, the base 61 includes a base main body 62 and an extendable portion 63 whose length can be changed with respect to the base main body 62.
In this way, the length of the stairs 60 can be changed by the extendable part 63 of the base 61, so even when changing the position of the receiving parts 23A to 23D that lock the locked part 65 of the stairs 60, the length of the stairs 60 can be changed. The stairs 60 can be installed by locking the locked portions 65 to the receiving portions 23A to 23D at different positions.

Moreover, the width dimension of the second tread plate 40B is set to be one-half or more of the width dimension of the first tread plate 40A.
In this way, it is possible to secure the dimensions of the second tread 40B that do not pose a problem for people to walk on, while also securing space for installing the stairs 50, 60 on the sides of the second tread 40B. Can be done.

<Embodiment 2>
Next, a second embodiment will be described with reference to FIGS. 7 and 8.
In the second embodiment, a staircase 70 is used instead of the stairs 50 and 60. Since the other configurations are the same as those in the first embodiment, the same configurations are given the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 7 and 8, the staircase 70 includes a base portion 71, a step portion 52, and a locked portion 75.
The base 71 includes a rod-shaped base main body 72 that extends linearly, and an expandable and retractable portion 73 that is coaxially connected to the base main body 72 and can be expanded and contracted. The outer shape of the cross section of the base body 72 can be any shape, such as a circle, an oval, a rectangle, or the like. The extensible portion 73 has a smaller diameter than the outer diameter of the base body 72 and can be inserted into the inside of the base body 72, so that the entire length of the base 71 can be expanded and contracted. Note that although the base portion 71 is linear, it is not limited to this and may be curved. For example, the base may be curved over the entire length.

The locked portion 75 has an alignment convex portion 76 and a protrusion 77 that both have a tapered shape and protrude. The alignment convex portion 76 comes into contact with the outer surface of the receiving portions 23B and 23D. The protrusion 77 is press-fitted into the receiving portions 23B, 23D by hitting it from above with a hammer or the like while the alignment convex portion 76 is in contact with the outer surface of the receiving portions 23B, 23D.
Note that the handrails 15 may not be provided on the side sides of the stairs 70 to prevent interference.

<Other embodiments>
The technology described in this specification is not limited to the embodiments described above and illustrated in the drawings; for example, the following embodiments are also included within the technical scope of the technology described in this specification.

(1) In the above embodiment, the temporary scaffold is a one-sided scaffold, but it is not limited to this. For example, the support members 20 are arranged in two rows, the pair of support members 20 are connected by a support member serving as a horizontal horizontal member (beam), and the tread plate 40 is placed on top of the adjacent horizontal member. It may also be a two-sided scaffold consisting of two sides. In addition, the scaffolding is not limited to the wedge type scaffolding, and a frame scaffolding, a single tube scaffolding, an overhanging scaffolding, etc. may be used. Further, a brace installed diagonally intersecting the plurality of support columns 20, a wall connection abutted on or connected to the building B, or the like may be provided.

(2) The number of support columns 20 and the number of layers of treadboards 40 are not limited to the number and number of steps in the above embodiment, and can be changed as appropriate depending on the size of the building, the shape of the site, etc. Moreover, the number of stairs can also be changed as appropriate. For example, the footboard 40 may be made of one layer.

(3) Although one staircase is provided for one layer of treadboards 40, the present invention is not limited to this, and a plurality of stairs may be provided for one layer of treadboards 40.
(4) The same type of stairs may be used for one temporary scaffold. Furthermore, multiple types of stairs may be used in any combination for one temporary scaffold.

(5) Although the receiving parts 23A to 23D are integrally fixed to the support column 20, the present invention is not limited thereto. For example, an adapter provided with a receiving section separate from the support section may be attached to the support section.
(6) Although the through holes 24 are formed in the receiving parts 23A to 23D, the present invention is not limited to this. For example, instead of the through hole 24, a concave portion having a concave upper surface side may be formed, and this concave portion may receive the protrusion (not limited to press-fitting).

10: Temporary scaffolding 20: Support section 23: Receiving section groups 23A to 23D: Receiving section 24: Through hole 30: Bracket (supporting member)
31: Horizontal support portion 32: Wedge portion 40: Step board 40A: First step board 40B: Second step board 41: Step board body 42: Locking holding portions 50, 60, 70: Stairs 51, 61, 71: Base portion 51A: Rod-shaped portion 51B: Branch portion 52: Step portions 53, 65, 75: Locked portions 62, 72: Base main bodies 63, 73: Expandable portion 64: Rotating portions 66, 77: Projection 75: Locked portion 76 : Positioning convex part B: Building

Claims (9)

Multiple treads on which people can walk,
a plurality of support members supporting the plurality of treadboards;
A temporary scaffolding comprising a plurality of support columns extending upward relative to the ground and to which each of the support members is fixed,
The plurality of treadboards include a first elongated treadboard, and a second elongated treadboard that is arranged in line in the longitudinal direction of the first treadboard and has a smaller dimension in the width direction than the first treadboard. , has
A temporary scaffolding comprising, in a region to the side of the second tread, a staircase that allows a person to ascend and descend from a position lower than the second tread. The stairs are
The base and
a plurality of step portions provided at predetermined intervals on the base for a person to walk on when ascending and descending;
a locked part disposed on at least one end side of the base and locked to at least one of the support member and the support column;
The temporary scaffold according to claim 1. The support member is a bracket fixed to the support column,
The bracket includes a horizontal support portion extending along the horizontal direction,
The temporary scaffold according to claim 2, wherein the staircase includes a pair of locked parts that are locked to the horizontal support part. The temporary scaffolding according to claim 2, wherein the support section has a receiving section at a predetermined height for receiving the locked section. A through hole is formed in the receiving part,
The temporary scaffold according to claim 4, wherein the locked portion is press-fitted into the through hole. The temporary scaffold according to claim 2, wherein the locked portion is rotatably connected to the base. The temporary scaffold according to claim 4, wherein the base includes a base main body and an extendable part whose length can be changed with respect to the base main body. A plurality of the first treadboards and one or more of the second treadboards are arranged in the longitudinal direction at the predetermined step and are supported by the plurality of support members arranged at the predetermined step;
In the predetermined step, the plurality of treadboards arranged in the longitudinal direction are arranged such that the second treadboards are arranged closer to one side in the width direction of the plurality of first treadboards arranged in the longitudinal direction, and A plurality of the first treadboards are provided in a configuration that extends to the other side in the width direction than the treadboards,
A plurality of the first treadboards and one or more of the second treadboards are arranged in the longitudinal direction at a step lower than the predetermined step, and are supported by a plurality of support members arranged at the lower step;
The plurality of treadboards arranged in the longitudinal direction on the low step are arranged such that the second treadboards are arranged closer to one side in the width direction of the plurality of first treadboards arranged in the longitudinal direction, and A plurality of the first treadboards are provided in a configuration that extends to the other side in the width direction than the treadboards,
A lateral region on the other side in the width direction of the second treadboard at the predetermined stage is an area where the treadboard is not arranged;
A lateral region on the other side in the width direction of the second treadboard on the low stage is an area where the treadboard is not arranged;
The staircase is provided with a configuration spanning a lateral region on the other side in the width direction of the second tread on the predetermined step and a lateral region on the other side in the width direction of the second tread on the lower step,
The upper surface part of the first tread plate is configured as an integral single plate,
The upper surface part of the second tread plate is configured as an integral single plate,
The temporary scaffolding according to any one of claims 1 to 7, wherein the width of the step portion of the staircase is smaller than the width of the first tread. a plurality of treadboards having a first elongated treadboard and a second treadboard arranged in parallel in the longitudinal direction of the first treadboard and having a smaller dimension in the width direction than the first treadboard; For temporary scaffolding that is capable of being raised and lowered in a direction inclined relative to the plurality of treadboards, the temporary scaffolding comprising a plurality of support members that support a plurality of treadboards, and a plurality of struts to which each of the support members is fixed. The stairs are
A staircase for temporary scaffolding arranged in a region to the side of the second tread.

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