Scaffolding base structure

Abstract

This scaffolding base structure reduces the time and effort required for setting up and dismantling scaffolding, as well as the costs associated with transporting scaffolding components to and from the site by truck. [Solution] The scaffolding 1 comprises bases 3 provided at intervals at multiple locations in the longitudinal direction, multiple pairs of support columns 6, 6 supported by each base 3 and provided at intervals in the transverse direction, handrails 17 installed between adjacent bases 3 in the longitudinal direction, brackets 15 installed between each pair of support columns 6, 6 so as to face the transverse direction, and scaffolding boards 20 installed between adjacent bases 3, 3 and between brackets 15, 15 in the longitudinal direction. Each base 3 consists of a pair of vertical pipes 4, 4 provided at predetermined intervals in the transverse direction and a horizontal pipe 5 provided between the two vertical pipes 4, 4, with the two vertical pipes 4, 4 and the horizontal pipe 5 being integrated.

Description

Technical Field

[0001] The present invention relates to the structure of the base of a scaffold used in construction work such as new construction, renovation, and demolition of buildings. In particular, it relates to a scaffold base structure that can improve the efficiency of transporting materials to and from the site, installing them on the site, and demolishing them.

Background Art

[0002] When performing construction work such as new construction, renovation, and demolition of buildings such as houses and buildings, in order to ensure the safety of workers working at heights and prevent accidents such as the fall of materials, tools, etc., various scaffolds are installed around the building.

[0003] An example of this type of scaffold is described in Patent Document 1. In this scaffold, a pair of short columns are arranged at a predetermined interval in the direction between beams (building direction), and a plurality of sets of this pair of columns are arranged at a predetermined interval in the direction of the girder row (direction along the building). Each pair of columns in each set is supported on the ground by a jack. A horizontal member is installed in the direction between beams of each pair of columns in each set, vertical members are installed between the outer columns and between the inner columns adjacent in the direction of the girder row, respectively, tread boards are installed between the adjacent horizontal members in the direction of the girder row, and width timbers facing the direction of the girder row are attached to both ends in the direction between beams of each tread board to construct a base portion.

[0004] Then, columns longer than each column of the base portion are added to each column, horizontal members are installed in the direction between beams of each pair of columns in each set in the same manner as the base portion, vertical members are installed between the adjacent columns in the girder direction, tread boards are installed between the adjacent horizontal members in the direction of the girder row, and width timbers facing the direction of the girder row are attached to both ends in the direction between beams of each tread board. By repeating such operations, a multi-layer scaffold is constructed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] By the way, in the scaffolding described in Patent Document 1, since the pair of support columns and horizontal members that constitute the base are formed separately, when transporting the scaffolding components from a material storage area to the construction site or from the site by truck, the support columns and horizontal members of the base must be packaged separately and loaded onto the truck bed. This increases the bulk on the truck bed, making transportation and loading by truck inefficient and increasing transportation costs.

[0007] Furthermore, when assembling scaffolding on-site, it is necessary to support the pair of base columns with jacks and then attach horizontal members between the pair of columns. This increases the labor time required to assemble and dismantle the scaffolding on-site, resulting in poor work efficiency for both assembly and dismantling.

[0008] This invention has been made in view of the above-mentioned conventional problems, and aims to provide a scaffolding base structure that can improve the efficiency of transporting the scaffolding to and from the site, as well as the work efficiency when assembling it on site and when removing it from the site. [Means for solving the problem]

[0009] To solve the above-mentioned problems, this invention employs the following means. In other words, the first invention is a scaffolding base structure used for construction work such as new construction, renovation, and demolition of buildings, comprising: a plurality of bases provided at predetermined intervals in the longitudinal direction of the building; a plurality of pairs of support columns supported by each of the bases and provided at predetermined intervals in the transverse direction of the building; handrails erected between adjacent bases in the longitudinal direction of the building; brackets erected between each pair of support columns so as to face the transverse direction; and scaffolding boards erected between adjacent bases and between the brackets in the longitudinal direction of the building, wherein each base consists of a pair of vertical pipes provided at predetermined intervals in the transverse direction of the building and a horizontal pipe provided between the pair of vertical pipes, and the pair of vertical pipes and the horizontal pipe are integrated.

[0010] According to the scaffolding base structure of this invention, since the vertical and horizontal pipes of each base are integrated, the work of installing horizontal pipes between the vertical pipes at the site is eliminated, and the labor required for assembling and dismantling the entire scaffolding can be reduced. In addition, since there is no need to pack the vertical and horizontal pipes separately and load them onto the truck bed, the bulk on the truck bed can be reduced.

[0011] Furthermore, the second invention is a scaffolding base structure according to claim 1, characterized in that the pair of vertical pipes and the horizontal pipes of the base are integrally connected by means such as welding or screwing.

[0012] According to the scaffolding base structure of this invention, the vertical and horizontal pipes of the base are integrally connected by welding, screws, etc., so the base can be positioned at a predetermined location on site by installing the base, which is an integral unit of the vertical and horizontal pipes, on site. Furthermore, the vertical and horizontal pipes can be loaded onto a truck bed and transported to or from the site as an integral unit.

[0013] Furthermore, the third invention is a scaffolding base structure as described in claim 2, characterized in that the horizontal pipe is integrally connected between the upper ends of the pair of vertical pipes to form a gate-shaped structure, or integrally connected between portions below the upper ends to form an H-shaped structure.

[0014] According to the scaffolding base structure of this invention, a gate-shaped or H-shaped base can be selected and used depending on the required scaffolding strength at the site. [Effects of the Invention]

[0015] As explained above, the scaffolding base structure of this invention integrates both vertical and horizontal pipes of each base, eliminating the need to install horizontal pipes between the two vertical pipes on-site, thus reducing overall work time. Consequently, the time and effort required for assembling and dismantling the scaffolding on-site can be reduced. Furthermore, since there is no need to pack the vertical and horizontal pipes separately and load them onto the truck bed, they can be packed together as a single unit and loaded onto the truck bed. This reduces the bulk on the truck bed and improves the efficiency of truck transportation.

[0016] Furthermore, since the vertical and horizontal pipes of the base are integrally connected by welding, screws, etc., the vertical and horizontal pipes can be installed and removed from the site as a single unit, reducing the time and effort required for assembling and dismantling the scaffolding at the site. In addition, since the vertical and horizontal pipes can be loaded onto a truck bed as a single unit and transported to and from the site, the bulk on the truck bed can be reduced, improving the efficiency of transportation by truck.

[0017] Furthermore, since the base can be selected and used in the shape of a gate or H depending on the required strength of the scaffolding at the site, its versatility can be increased. [Brief explanation of the drawing]

[0018] The drawings show specific embodiments of the present invention according to the present disclosure, including not only the essential configurations of the invention but also optional and preferred embodiments. [Figure 1] It is an explanatory view showing the assembling procedure of the scaffold to which the base structure of the scaffold according to the present invention is applied, and is an explanatory view showing the first procedure. [Figure 2] It is an explanatory view showing the second procedure. [Figure 3] It is an explanatory view showing the third procedure. [Figure 4] It is a plan view showing the relationship between the scaffold board and the crossbeam. [Figure 5] It is a cross-sectional view taken along the line A-A of FIG. 4. [Figure 6] It is a front view of FIG. 4. [Figure 7] It is a schematic view of the base. [Figure 8] It is a plan view of FIG. 7. [Figure 9] It is a schematic view of another example of the base. [Figure 10] It is a plan view of FIG. 9. [Figure 11] It is a schematic view of the support column. [Figure 12] It is a schematic view of the crossbar. [Figure 13] It is a schematic view of the handrail. [Figure 14] It is a schematic view of the cross brace. [Figure 15] It is a schematic view of the jack. ​​​​​​​​​​As shown in Figures 1 to 3, the base structure 2 of the scaffolding 1 in this embodiment comprises scaffolding 1 composed of members such as jacks 10, base 3, support columns 6, brackets 15, handrails 17, scaffolding boards 20, toe boards 30, and braces 35.

[0021] As shown in Figures 1 to 3 and Figure 15, the jack 10 consists of a metal rectangular plate-shaped base plate 11, a metal rod-shaped screw shaft 12 integrally erected in the center of the base plate 11, a metal annular movable screw 13 that is screwed onto the screw shaft 12 so as to be movable in the axial direction, and a handle 14 integrally provided on the movable screw 13.

[0022] As shown in Figures 1 to 3 and Figures 7 to 8, the base 3 is gate-shaped and consists of a pair of vertical pipes 4, 4 made of single-pipe (carbon steel pipe with zinc plating on the surface) provided at a predetermined interval, and a horizontal pipe 5 made of the same single-pipe material as the vertical pipes 4 that connects the upper ends of both vertical pipes 4, 4. The two vertical pipes 4, 4 and the horizontal pipe 5 are integrally connected by means of welding, screwing, etc.

[0023] A slot 4a is integrally provided on the longitudinal side of the vertical pipe 4 of the base 3, and by fitting the wedge 18 of the handrail 17 (described later) into this slot 4a, the handrail 17 is erected between the outer and inner vertical pipes 4 of adjacent bases 3, 3 in the longitudinal direction of the building. Note that the base 3 is not limited to a gate shape, but may also be formed in an H shape as shown in Figures 9 and 10. Depending on the required strength of the scaffolding 1 at the site, a gate-shaped or H-shaped base 3 may be selected and used.

[0024] As shown in Figures 1 to 3 and Figure 15, a jack 10 is interposed between each vertical pipe 4 of the base 3 and the ground, and the upper end of the screw shaft 12 of the jack 10 is inserted into the lower end of each vertical pipe 4. By moving the movable screw 13 along the screw shaft 12 via the handle 14 of the jack 10 in the vertical direction, the vertical position of the base 3 and the vertical position of the support column 6 supported by the base 3 can be adjusted.

[0025] As shown in Figures 1 to 3, multiple foundations 3 are installed around the building at predetermined intervals in the longitudinal direction. Each foundation 3 is provided with a pair of vertical pipes 4, 4 positioned at the front and rear in the beam direction of the building, and each vertical pipe 4 of each foundation 3 is supported by jacks 10 in the ground. Note that the beam direction refers to the direction of the building, while the girder direction refers to the direction along the building.

[0026] As shown in Figure 11, the support column 6 is formed from a single pipe of the same material as the vertical pipe 4 and horizontal pipe 5 of the base 3, and multiple fastening parts 7 are provided at predetermined intervals along its longitudinal direction. Each fastening part 7 has a slot 8 provided at four locations around the support column 6 (two in the left-right direction and two in the depth direction in Figure 11). The slots 8 in the left-right direction function as slots 8 into which the wedges 16 of the bracket 15 are fitted, and the slots 8 in the depth direction function as slots 8 into which the wedges 18 of the handrail 17 are fitted.

[0027] As shown in Figure 2, the lower end of the first support column 6 is inserted into the upper end of each vertical pipe 4 of each base 3, and the lower end of the second support column 6 is inserted into the upper end of each first support column 6. By repeating this process, a group of support columns 9 consisting of multiple support columns 6 of a predetermined height can be constructed around the building, as shown in Figures 2 and 3.

[0028] As shown in Figure 12, the bracket 15 is formed from a single pipe of the same material as the support column 6, and tapered wedges 16, 16 are integrally provided at both ends. The bracket 15 is installed integrally between the pair of support columns 6, 6 in the beam direction by inserting the wedges 16, 16 at both ends into the gaps 8, 8 of the pair of support columns 6, 6 which are supported by the respective bases 3, hammering the heads of the wedges 16, 16 into the gaps 8, 8, and locking the lock pins (not shown) on the wedge 16, 16 side to the gaps 8, 8.

[0029] As shown in Figure 13, the handrail 17 is formed from a single pipe of the same material as the support column 6, and tapered wedges 18, 18 are integrally provided at both ends. The handrail 17 is installed integrally between the support columns 6, 6 of the adjacent support columns 6, 6, which are supported by adjacent bases 3, 3 in the longitudinal direction, by inserting the wedges 18, 18 at both ends into the grooves 8, 8 in the longitudinal direction of the adjacent support columns 6, 6, respectively, by hammering the heads of the wedges 18, 18 into the grooves 8, 8, and locking the lock pins (not shown) on the wedge side of the wedges 18, 18 into the grooves 8, 8, thereby installing the handrail 17 integrally between the support columns 6, 6 of the adjacent bases 3, 3 in the longitudinal direction.

[0030] As shown in Figures 4 to 6, the scaffolding board 20 comprises a rectangular board-shaped scaffolding board body 21, a square frame-shaped reinforcing frame 25 integrally provided around the scaffolding board body 21, a pair of roughly C-shaped plate-shaped hooks 28, 28 integrally provided at intervals in the width direction of the scaffolding board body 21 at both ends in the longitudinal direction of the reinforcing frame 25, and plate-shaped reinforcing bars 22 provided at multiple locations on the lower surface side of the scaffolding board body 21, and a baseboard 30 integrally provided at both ends in the width direction of the scaffolding board body 21 so as to extend along the entire length of the scaffolding board body 21.

[0031] The scaffolding board body 21, reinforcing frame 25, hooks 28, reinforcing crossbars 22, and baseboard 30 are made of steel or aluminum, and the scaffolding board body 21 and the reinforcing frame 25 are integrally connected by means of welding, screwing, etc., the reinforcing frame 25 and the hooks 28 are integrally connected by means of welding, screwing, etc., and the scaffolding board body 21 and the reinforcing crossbars 22 are integrally connected by means of welding, screwing, etc.

[0032] The scaffolding board body 21 is formed by bending both ends in the length direction and both ends in the width direction of a rectangular board material at right angles toward the back side, thereby creating a beam-side edge 23 and a girder-side edge 24 perpendicular to the front and back surfaces of the board material, and is integrally connected to the reinforcing frame 25 via these edges 23 and 24.

[0033] The reinforcing frame 25 is formed by framing a pair of rectangular plate-shaped beam-side reinforcing plates 26 that are provided at both ends in the longitudinal direction of the scaffolding board body 21 so as to extend across the entire width of the scaffolding board body 21, and a pair of girder-side reinforcing plates 27 that are provided at both ends in the width direction of the scaffolding board body 21 so as to extend across the entire length of the scaffolding board body 21, and then integrally connecting adjacent beam-side reinforcing plates 26 and girder-side reinforcing plates 27 by means of welding, screwing, etc., to form a rectangular frame shape.

[0034] The scaffolding board body 21 is placed inside the reinforcing frame 25, and the reinforcing plate 26 on the beam side of the reinforcing frame 25 and the beam side edge 23 of the scaffolding board body 21, and the reinforcing plate 27 on the girder side of the reinforcing frame 25 and the girder side edge 24 of the scaffolding board body 21 are connected by means of welding, screwing, etc., thereby integrating the reinforcing frame 25 and the scaffolding board body 21.

[0035] The scaffolding board body 21 is not limited to the plate-like structure described above, but may also be constructed from a mesh plate such as expanded metal. When using a mesh plate, the mesh plate can be integrally connected to the inner surface of the reinforcing frame 25 by welding, screwing, or other means.

[0036] The baseboard 30 is formed from an L-shaped plate made of steel or aluminum, and as shown in Figures 4 to 6, it is integrally provided at both ends in the width direction of the scaffolding board 20 so as to extend along the entire length direction, with the upright portion 31 protruding upward from the upper surface of the scaffolding board 20 by a predetermined length (a length specified in the Industrial Safety and Health Regulations).

[0037] In this case, the baseboard 30 is integrally provided at both ends in the width direction of the scaffolding board 20 by welding, screwing, or other means to multiple points on the base end 32 to the upper surface side of the scaffolding board body 21, thereby configuring the upright portion 31 of the baseboard 30 to protrude upward by a predetermined length from the upper surface of the scaffolding board body 21.

[0038] Furthermore, the baseboard 30 is not limited to an L-shaped plate; an I-shaped plate may also be used. In that case, the baseboard 30 should be integrally connected to the upper part of the girder-side reinforcing plate 27 of the reinforcing frame 25 of the scaffolding board 20 by means of welding, screwing, or other means.

[0039] As shown in Figure 14, the brace 35 has wedges 36, 36 integrally attached to both ends of a steel pipe, and as shown in Figure 3, it is installed diagonally between adjacent support columns 6, 6 in the longitudinal direction. The wedge 36 at one end of the brace 35 is fitted into the slot 8 of one adjacent support column 6 in the longitudinal direction, and the wedge 36 at the other end is fitted into the slot 8 of the other adjacent support column 6, thereby being installed diagonally between adjacent support columns 6, 6 in the longitudinal direction.

[0040] The scaffolding 1, which consists of multiple components as described above, is prepared for installation by packaging each component at a materials storage area, loading them onto a truck, transporting them to the site by truck, and then using a crane or similar equipment to unload each component from the truck.

[0041] Then, at the construction site, as shown in Figure 1, workers place multiple foundations 3 at predetermined intervals in the longitudinal direction of the building, and place jacks 10 at the parts corresponding to each vertical pipe 4 of each foundation 3. At this time, if necessary, base plates 40 are laid between the jacks 10 and the ground to adjust for unevenness in the ground.

[0042] Next, the upper end of the screw shaft 12 of each jack 10 is inserted into the lower end of each vertical pipe 4 of each base 3, and each base 3 is supported on the ground by a pair of jacks 10, 10 (see Figure 15). At this time, the orientation of each base 3 is adjusted so that the pair of vertical pipes 4, 4 of each base 3 are positioned front to back in the direction of the building's beams.

[0043] Next, a handrail 17 is placed between the vertical pipes 4, 4 of adjacent foundations 3 in the longitudinal direction, and the wedges 18, 18 at both ends of the handrail 17 are fitted into the slots 4a of the vertical pipes 4, thereby installing the handrail 17 between the vertical pipes 4, 4 of adjacent foundations 3 in the longitudinal direction.

[0044] Next, as shown in Figure 2, the scaffolding board 20 is placed between adjacent foundations 3, 3 in the longitudinal direction, and the hooks 28, 28 at both ends in the longitudinal direction are attached to adjacent brackets 15, 15 in the longitudinal direction, thereby erecting the scaffolding board 20 between adjacent foundations 3, 3 in the longitudinal direction.

[0045] Next, the lower ends of the support columns 6 are inserted into the upper ends of the vertical pipes 4 of each base 3, and a bracket 15 is placed between the pair of support columns 6, 6 supported by each base 3. The wedges 16, 16 at both ends of the bracket 15 are inserted into the slots 8, 8 of each support column 6, and the heads of the wedges 16, 16 are struck with a hammer or the like to fit them into the slots 8, 8, and the lock pins (not shown) on the wedge 18, 18 side are locked to the slots 8, 8 side. In this way, the bracket 15 is erected between the pair of support columns 6, 6 at the top of each base 3.

[0046] Next, a handrail 17 is placed between the support columns 6, 6 which are supported by adjacent foundations 3, 3 in the longitudinal direction. The wedges 18, 18 at both ends of the handrail 17 are inserted into the slots 8, 8 of each support column 6, 6. The heads of the wedges 18, 18 are struck with a hammer or the like to fit them into the slots 8, 8, and the lock pins (not shown) on the wedge 8, 8 side are locked into the slots 8, 8. In this way, the handrail 17 is installed between the support columns 6, 6 on the upper part of the adjacent foundations 3, 3.

[0047] Next, the scaffolding board 20 is placed between adjacent brackets 15, 15 in the longitudinal direction, and the hooks 28, 28 at both ends of the scaffolding board 20 in the longitudinal direction are attached to the brackets 15, thereby erecting the scaffolding board 20 between adjacent brackets 15, 15 in the longitudinal direction. As a result, the scaffolding board 20 is placed between adjacent brackets 15, 15, and the baseboard 30, which is integrally formed with the scaffolding board 20, is positioned between adjacent support columns 6, 6 in the longitudinal direction, protruding upward from the top surface of the scaffolding board 20 by a predetermined length.

[0048] Next, as shown in Figure 3, a diagonal brace 35 is placed between adjacent support columns 6, 6 in the girder direction, and the wedges 36, 36 at both ends of the brace 35 are fitted into the slots 8 of one adjacent support column 6 and the slots 8 of the other support column 6, thereby installing the diagonal brace 35 between adjacent support columns 6, 6 in the girder direction.

[0049] This allows for the construction of the first layer of scaffolding 1. By repeating this process, a multi-layered scaffolding 1 can be constructed around the building. Note that Figure 3 shows only the first layer of scaffolding 1.

[0050] In the scaffolding base structure 2 of this embodiment, configured as described above, the pair of vertical pipes 4, 4 and the horizontal pipe 5 of the base 3 are integrated. Therefore, when installing the scaffolding 1 on site, the work of installing the horizontal pipe 5 between the pair of vertical pipes 4, 4 of the base 3 is unnecessary. By simply placing the base 3 in a predetermined position, the base 3 consisting of the pair of vertical pipes 4, 4 and the horizontal pipe 5 can be constructed at that position. Consequently, the amount of work required for the overall assembly of the scaffolding 1 can be reduced, the time and effort required for the assembly of the scaffolding 1 can be reduced, and the scaffolding 1 can be installed efficiently on site.

[0051] Furthermore, when removing scaffolding 1 from the site, the pair of vertical pipes 4, 4 and the horizontal pipe 5 of the base 3 can be removed as a single unit, thus reducing the time and effort required to remove scaffolding 1 and allowing for efficient removal of scaffolding 1 from the site.

[0052] Furthermore, since the pair of vertical pipes 4, 4 and the horizontal pipe 5 of the base 3 are integrally formed, the bulk on the truck bed can be reduced when transporting the components of the scaffolding 1 to or from the site. This reduces the number of trucks required for transport, thereby reducing the time and effort required for transport and significantly lowering the costs associated with transport.

[0053] Furthermore, since the shape of the base 3 can be gate-shaped or H-shaped, by selecting the shape of the base 3 according to the required strength of the scaffolding 1 at the site, it can be applied to various types of scaffolding 1 with different required strengths, thereby increasing its versatility.

[0054] In the above description, we have explained an example in which the scaffolding base structure 2 of the present invention is applied to a wedge-type scaffolding. However, the present invention may also be applied to various other types of scaffolding (such as frame scaffolding), and the same effects and advantages will be obtained in that case as well. [Explanation of Symbols]

[0055] 1. Scaffolding 2. Scaffolding base structure 3. Base 4 vertical pipes 4a Frame 5 horizontal pipes 6 pillars 7 Fastening section 8 frames 9 pillar group 10 Jacks 11 Base plate 12 Screw shaft 13. Movable screw 14 handles 15 Armrests 16 Wedge 17 Handrail 18 Wedge 20 scaffolding planks 21 Scaffolding board body 22 Reinforcement battens 23 Side edge of beam section 24-column row side edge 25 Reinforcement slots 26. Reinforcement plate on the beam side 27-column row-side reinforcing plate 28 hooks 30 Baseboard 31 Standing part 32 Proximal end 35 Bracing 36 Wedge 40 Bottom plate

Claims

1. A scaffolding base structure used in construction work such as building new construction, renovation, and demolition, Multiple foundations are provided at predetermined intervals in the longitudinal direction of the building, Each of the aforementioned foundations is supported by a plurality of pairs of support columns, which are provided at predetermined intervals in the direction of the beams of the building, Handrails are installed between adjacent foundations in the longitudinal direction of the building, A bracket is erected between each pair of support columns in the aforementioned set, so as to face the direction of the beam span, The building is equipped with scaffolding consisting of scaffolding boards erected between adjacent foundations and between brackets in the longitudinal direction of the building, Each of the aforementioned bases consists of a pair of vertical pipes provided at predetermined intervals in the direction of the building's beams, and a horizontal pipe provided between the pair of vertical pipes, characterized in that the pair of vertical pipes and the horizontal pipe are integrated.

2. The scaffolding base structure according to claim 1, characterized in that the pair of vertical pipes and the horizontal pipes of the base are integrally connected by means such as welding or screwing.

3. The scaffolding base structure according to claim 2, characterized in that the horizontal pipe is integrally connected between the upper ends of the pair of vertical pipes to form a gate shape, or integrally connected between portions below the upper ends to form an H shape.

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