Structure for attaching structural element to grating flooring material and reinforcing member for structural element for grating flooring material

Abstract

To provide structure for attaching a structural element to a grating flooring material capable of improving attachment strength of the structural element attached on the grating flooring material.SOLUTION: The present invention is directed to structure for attaching a structural element to a grating flooring material, in which a base 6 of the structural element is fixed to a grating flooring material 2 having a plurality of long holes 22 formed in a parallel arrangement along a longitudinal direction of a tread 21 in a long plate shape, on an upper surface of one end side in a longitudinal direction of the long hole, a reinforcing member 4 is provided with one end portion 41, an intermediate portion 42, and the other end portion 43 along the longitudinal direction of the long hole, the one end portion 41 is fixed to the structural element, the intermediate portion 42 is arranged from an upper side to a lower side of the tread 21 by being inserted and arranged in one of the long holes 22 of the grating flooring material 2, and the other end portion 43 is arranged to contact and lock the lower side of the tread 21 closer to the other end side than the other end of any long hole 22.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a structure mounting structure for a grating floor material, in which structures such as handrail posts are attached to a grating floor material serving as a steel floor, and to a structure reinforcing member for a grating floor material. [Background technology]

[0002] When forming steel floors such as scaffolding, walkways, and steps at a specified height in factories, warehouses, etc., a well-known steel floor is made by laying and fixing a large number of metal (steel) grating floor materials with multiple holes in the treads to structural materials such as beams.

[0003] Some types of grating flooring have a lip groove type (C channel type) shape, and many long holes are formed in parallel at a predetermined interval along the length of the tread (web). In addition, a rib bent downward is integrally formed at the opening edge of the long hole in the tread. Handrails are attached to the steel floor made of this grating flooring material as necessary. For example, in the steel floor with handrails shown in the following Patent Document 1, a base is fixed to the lower end of the structure such as a support that constitutes the handrail, and the base is bolted to the grating flooring material through the long holes, so that multiple supports are erected along the edge of the steel floor, and cross bars are attached so as to span between each support to construct the handrail. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-70682 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the post mounting structure for the steel floor (grating floor material) shown in Patent Document 1, sufficient safety is ensured by using reinforcing members etc. to increase the mounting strength of the posts, in particular the strength to prevent the posts from tilting outward. However, depending on the installation location of the steel floor and the installation location and type of handrail, the current situation is that it is naturally preferable to further improve the mounting strength of the handrail (post) to ensure even higher safety.

[0006] The present invention has been made in consideration of the above problems, and aims to provide a structure mounting structure for grating flooring and a structure reinforcement member for grating flooring that can sufficiently improve the mounting strength of structures such as handrail supports to grating flooring. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention comprises the following means.

[0008] [1] A structure mounting structure for a grating floor material in which a base of a structure is fixed to the upper surface of one end of a long hole in the longitudinal direction of the grating floor material, the base being a grating floor material having a long plate-shaped step and a plurality of long holes formed in parallel along the longitudinal direction of the step, a reinforcing member provided with one end, a middle portion and another end along the longitudinal direction of the long hole; A structure mounting structure for a grating floor material, characterized in that the one end is fixed to the structure, the middle portion is inserted into any one of the long holes of the grating floor material to be positioned from the upper surface side to the lower surface side of the tread, and the other end is positioned so as to abut and engage with the lower surface side of the tread on the other end side of any of the long holes.

[0009] [2] A rib protruding downward is formed on the outer peripheral edge of each long hole in the grating floor material, A structure for mounting a grating floor material to a structure as described in the preceding paragraph 1, in which the vicinity of the other end of the intermediate portion of the reinforcing member is arranged to abut and engage with the lower end of the rib on the other end side of any of the long holes.

[0010] [3] A structure mounting structure for a grating floor material as described in paragraph 1 or 2 above, wherein the structure is constituted by a handrail support post on which the base is provided.

[0011] [4] A structure reinforcement member for a grating floor material used in a structure in which a base of a structure is fixed to the upper surface of one end side of a long hole in a long plate-shaped step having a plurality of long holes formed in parallel along the length of the step, One end portion, a middle portion and another end portion are provided along the longitudinal direction of the long hole, A structure reinforcement member for a grating floor material, characterized in that the one end is configured to be fixed to the structure, the middle portion is configured to be positioned from the upper surface side to the lower surface side of the tread by being inserted into any of the long holes of the grating floor material, and the other end is configured to be able to abut against the underside of the tread on the other end side of the other end of any of the long holes and be engaged. Effect of the Invention

[0012] According to the structure for mounting the grating floor material to a structure of invention [1], one end of the reinforcing member is fixed to the structure, the middle part is inserted into the long hole of the grating floor material and arranged from the upper side to the lower side of the tread, and the other end is arranged so as to abut and engage with the other end side of the long hole on the underside of the tread. Therefore, even if a great force is applied that would cause the structure to tilt to one end, the other end engages with the underside of the tread, thereby ensuring sufficient strength to suppress tilting, and the structure can be supported with high strength.

[0013] According to the structure for mounting the grating floor material to a structure of the invention [2], the other end of the reinforcing member is abutted against the underside of the tread, and the other end of the middle part is abutted against the other end rib of the long hole, so that the load in the direction of the structure tilting can be distributed and received at two points, the other end and the middle part. This makes it possible to prevent problems such as early deterioration caused by the load being concentrated at one point of the other end, and improve durability.

[0014] According to the structure for mounting a grating floor material to a structure of the present invention [3], it is possible to ensure sufficient mounting strength for supports for handrails, etc. attached to the grating floor material.

[0015] According to the structure reinforcement member for grating floor material of invention [4], similar to the above inventions, the mounting strength of the structure on the grating floor material can be sufficiently ensured. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view showing a steel floor with supports to which a structure for mounting a grating floor material to a structure, which is an embodiment of the present invention, is applied. [Diagram 2] FIG. 2 is a side cross-sectional view showing the periphery of a support post mounting portion in a steel floor of the embodiment. [Diagram 3] FIG. 3 is a partially cutaway plan view showing the periphery of the support post mounting portion in the steel floor of the embodiment. [Figure 4] FIG. 4 is a perspective view showing the periphery of a support post mounting portion in a steel floor according to an embodiment. [Diagram 5] FIG. 5 is a perspective view showing a grating floor material applied to a steel floor according to an embodiment with base fixing brackets attached. [Figure 6] FIG. 6 is an exploded perspective view of a base fixing bracket applied to a steel floor according to an embodiment. [Figure 7] FIG. 7 is a perspective view showing a reinforcing member applied to a steel floor of an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Fig. 1 is a perspective view showing a steel floor with handrails to which a support mounting structure for a grating floor material according to an embodiment of the present invention is applied, Fig. 2 is a side cross-sectional view showing the periphery of the support mounting part in the steel floor according to the embodiment, Fig. 3 is a partially cutaway plan view showing the periphery of the support mounting part in the steel floor according to the embodiment, Fig. 4 is a perspective view showing the periphery of the support mounting part in the steel floor according to the embodiment, and Fig. 5 is a perspective view showing the periphery of the support mounting part of the grating floor material applied to the steel floor according to the embodiment. In this embodiment, in order to facilitate understanding of the invention, the left side of Fig. 2 (the lower side of Fig. 3) will be referred to as "one end side" or "outside" and the right side of Fig. 2 (the upper side of Fig. 3) will be referred to as "the other end side" or "inside".

[0018] As shown in Figures 1 to 5, the handrail-equipped steel floor of this embodiment is configured by assembling a handrail 5 to a steel floor 1. Furthermore, the steel floor 1 is configured by a plurality of grating floor materials 2.

[0019] The grating floor material 2 is made of lip groove steel (C-channel steel) made of steel plate, and is integrally provided with a long plate-shaped tread 21 which corresponds to a web, both side walls 31 which correspond to flanges and are formed by folding downward from both side edges of the tread 21, and a lip 32 which is formed by folding inward from the lower ends of both side walls 22.

[0020] In the step 21, a plurality of long holes 22 extending in a direction perpendicular to the length of the step are formed in parallel at equal intervals along the length of the step. Furthermore, ribs 23a, 23b are formed on the entire circumference of the outer periphery of each long hole 22 in the step 21 so as to protrude downward. In this embodiment, of the ribs 23a, 23b, those located at both ends (one end and the other end) of the long hole 22 are referred to as the one-end side rib 23a and the other-end side rib 23a, and those located on both side edges of the long hole 22 are referred to as the side edge ribs 23b.

[0021] Further, in each of the side edge ribs 23b, three elongated insertion holes 24 are formed in a vertical row (series arrangement) along the length direction of the elongated hole.

[0022] Furthermore, a plurality of circular mounting holes 26 are formed on both side walls 31 of the grating floor material 2 at predetermined intervals along the length of the floor material.

[0023] A steel floor 1 is constructed by arranging multiple grating floor materials 2 of this configuration in a line on structural beam materials such as I-beams or H-beams (not shown) and fixing them via floor material fixing brackets (not shown).

[0024] A handrail 5 is attached to the grating floor material 2 arranged on the outside (one end side) of the steel floor 1. The handrail 5 is made of channel steel (U-shaped steel) and includes multiple posts 51 erected at predetermined intervals along the outer edge of the steel floor 1, and horizontal rails 55 spanning between each of the adjacent posts 51. The posts 51 include a base 6 for fixing to the steel floor 1. In this embodiment, the posts 51 and base 6 form a structure. However, in this embodiment, it is also possible to regard the entire handrail as the structure.

[0025] The base 6 is integrally provided with a base body 61 disposed horizontally and a vertical plate portion 55 formed on one end side (outside) of the base body 61 so as to be bent downward.

[0026] The base body 61 is formed with a plurality of elongated mounting holes 62 that can correspond to the elongated holes 22 of the grating floor material 2. Furthermore, the vertical plate portion 65 is formed with two circular mounting holes 66 arranged side by side that can correspond to the mounting holes 26 of the grating floor material 2.

[0027] The lower end of the support pillar 51 is fixed by welding or the like to approximately the center of the upper surface of the base body 61. In this fixed state, the groove opening of the support pillar 51 is disposed on one end side of the base 6 (the vertical plate portion 65 side), and the web (back wall) of the support pillar 51 is disposed on the other end side of the base 6 (the opposite side to the vertical plate portion 65).

[0028] 6 is an exploded perspective view of the base fixing bracket 7 for fixing the base 6 to the grating floor material 2. As shown in FIGS. 5 and 6, the base fixing bracket 7 comprises a bracket body 71, a bolt 72, a rotation stopper 73, and a nut 74.

[0029] The metal fitting body 71 is formed in a rectangular shape. The metal fitting body 71 is formed such that the width dimension H1 is smaller than the width dimension of the long hole 22 in the grating floor material 2, and the length dimension L1 is larger than the width dimension of the long hole 22. With this configuration, when the length direction is aligned with the length direction of the long hole 22 as shown in Figure 5, it is configured to be able to be inserted into the long hole 22.

[0030] Bolt 72 is disposed such that its head is fixed to the lower surface (rear surface) side of metal fitting body 71 and its shaft penetrates metal fitting body 71 and protrudes upward.

[0031] The anti-rotation device 73 is formed in a U-shape that opens downward, and a bolt insertion hole 731 into which the shaft portion of the bolt 72 can be inserted is formed in the center of the intermediate wall (upper wall). Furthermore, the anti-rotation device 73 is formed so that the length dimension L3 is smaller than the width dimension of the long hole 22, and the groove dimension H3 is larger than the width dimension H1 of the metal fitting main body 71.

[0032] The base 6 of the support 51 is fixed to the upper surface of the grating floor material 2 at four predetermined positions by the base fixing metal fittings 7. That is, as shown in FIG. 5, the bolt-attached metal fitting body 71 of the base fixing metal fitting 7 is inserted from above into the long hole 77 while aligning its length direction with the length direction of the long hole 77 at each predetermined position, and when the metal fitting body 71 corresponds to the insertion hole 24 of the side edge rib 23b of the grating floor material 2, the metal fitting body 71 is rotated 90° horizontally. As a result, as shown in FIG. 6, both ends in the length direction of the metal fitting body 71 are inserted into the insertion hole 24 of the side edge rib 23b of the grating floor material 2, the metal fitting body 71 is temporarily fixed in the vertical direction, and the bolt 72 fixed to the metal fitting body 71 is arranged in a state of protruding upward from the long hole 22. The installation work of the bolt-attached metal fitting body 71 can be performed by pinching the shaft of the bolt 72 and working from above the grating floor material 2.

[0033] After installing the bolted metal fitting body 71, the anti-rotation device 73 is aligned with the groove width direction along the length of the long hole 22 as shown in Figures 5 and 6, and the bolt 72 is inserted from below into the bolt insertion hole 731 of the anti-rotation device 73 while being dropped into the long hole 22, so that the metal fitting body 71 fits externally into the groove of the anti-rotation device 73. In this state, the anti-rotation device 73 engages with the side edge rib 23b of the grating floor material 2 to prevent the metal fitting body 71 from rotating in the horizontal direction, preventing the metal fitting body 71 from accidentally falling off.

[0034] In this way, the bolts 72 of the base fixing brackets 7 are positioned so that they protrude upward from the long holes 22 at four predetermined positions on the grating floor material 2, and the base body 61 of the base 6 fixed to the supports 51 is placed on the treads 21 of the grating floor material 2, and the vertical plate portion 65 is positioned so that it is aligned with the surface of the side wall 31 on one end side of the grating floor material 2. At this time, each bolt 72 is inserted from below into the corresponding mounting holes 62 in the base body 61 and positioned so that it protrudes upward, and the mounting holes 66 of the vertical plate portion 65 are positioned so that they correspond to the predetermined mounting holes 26 of the grating floor material 2.

[0035] In this state, nuts 74 are screwed onto each bolt 72 from above and pressed against the top surface of the base body 61. This fixes the base body 61 to the tread 21 of the grating floor material 2. Furthermore, a bolt 76 is inserted into the mounting hole 66 of the vertical plate portion 65 of the base 6 and the mounting hole 26 in the side wall 31 on one end side (outside) of the grating floor material 2, and the bolt 76 is fastened to a nut provided on the inner surface (back surface) of the side wall of the grating floor material 2, thereby fixing the vertical plate portion 65 of the base 6 to the side wall 31 of the grating floor material 2.

[0036] In this way, multiple supports 51 are fixed at predetermined intervals along the outer edge of the grating floor material 2 via the base 6.

[0037] As shown in FIG. 1, horizontal rails 55 are fixed between adjacent posts 51 to form handrails 5.

[0038] On the other hand, in this embodiment, the reinforcing member 4 is provided so as to ensure sufficient strength against problems such as the support pillars 51 tilting outward.

[0039] Fig. 7 is a perspective view showing the reinforcing member 4. As shown in Fig. 2, Fig. 7, etc., the reinforcing member 4 is arranged along the longitudinal direction of the long hole of the grating floor material 2, and is integrally provided with one end portion 41 arranged at one end in the longitudinal direction of the long hole, the other end portion 43 arranged at the other end, and an intermediate portion 42 provided between the one end portion 41 and the other end portion 43 and connecting them.

[0040] One end 41 is formed so as to extend vertically along the support column 51, and has a mounting flange 411 disposed along the back surface (web) of the support column 51. This mounting flange 411 is fixed to the back surface of the support column 51 with bolts 45, whereby one end 41 is fixed to the support column 51 as a structure.

[0041] The intermediate portion 42 includes an upper horizontal portion 421 that is connected to one end 41 on the upper surface side (front side) of the grating floor material 2 (tread 21) and extends horizontally toward the other end, an intermediate vertical portion 422 that is connected to the other end side of the upper horizontal portion 421, extends vertically downward, and is inserted into any of the long holes 22, and a lower horizontal portion 423 that is connected to the lower end of the intermediate vertical portion 422 on the lower surface side (rear side) of the grating floor material 2 (tread 21) and extends horizontally toward the other end. Therefore, the upper horizontal portion 421 of the intermediate portion 42 is disposed on the upper surface side of the tread 21 of the grating floor material 2, the intermediate vertical portion 422 is inserted into any of the long holes 22 and is disposed from the upper surface side to the lower surface side of the tread 21, and the lower horizontal portion 423 is disposed on the lower surface side of the tread 21. The other end of the lower horizontal portion 423 is formed so as to be located closer to the other end side than the other end of any one of the long holes 22 .

[0042] The other end 43 of the reinforcing member 4 is connected to the other end side of the lower horizontal section 423 of the intermediate section 42, and an upwardly protruding abutting engagement section 431 is provided at the upper end of the other end 43. The abutting engagement section 431 is positioned so as to abut and engage with the back surface side (lower surface side) of the tread 21 on the other end side of the other end of the long hole 22 of the grating floor material 2.

[0043] Furthermore, in this embodiment, the other end side of the lower horizontal portion 423 of the intermediate portion 42, i.e., the vicinity of the other end engagement portion 43 of the intermediate portion 42, is positioned so as to abut and engage with the lower end of the other end side rib 23a of any of the above-mentioned long holes 22.

[0044] In this way, in the steel floor with handrails of this embodiment, the mounting strength of the support 51 in the handrail 5 is increased by the reinforcing member 4, so that even if a large amount of inadvertent force acts on the support 51, the tilting of the support 51 can be effectively prevented. Particularly in this embodiment, one end 41 of the reinforcing member 4 is fixed to the support 51, the middle part 42 is inserted into the long hole 22 of the grating floor material 2 and guided to the back side of the tread 21, and the other end 43 is abutted and locked to the back side of the tread 21 on the other end side of the other end of the long hole 22 in the tread 21, so that a long distance can be secured from the position of the mounting flange 411 of the one end 41 of the reinforcing member 4 to the position of the abutting locking part 431 of the other end 43, and a sufficient moment force can be secured to suppress the outward tilting of the support 41, and defects such as the support 51 tilting can be more reliably prevented.

[0045] Furthermore, in this embodiment, the abutment locking portion 431 of the other end 43 of the reinforcing member 4 abuts and locks against the back surface of the tread 21, and at the same time, the other end side of the intermediate portion 42 abuts and locks against the other end rib 23a of the tread 21, so that the load in the direction in which the support 51 falls can be received in a distributed manner at two points, the abutment locking portion 431 of the other end 43 and the other end side of the intermediate portion 42. This makes it possible to prevent problems such as early deterioration of the abutment locking portion 431 (other end 43) caused by the load being concentrated at one point on the abutment locking portion 431 of the other end 43, and improve durability.

[0046] Furthermore, the post mounting structure of the grating floor material in this embodiment can be easily realized by simply fixing the reinforcing member 4 from the post 51 to the back side of the grating floor material 2 to an existing handrail 5, etc., and the mounting strength of the post 51 can be reliably increased, thereby significantly improving versatility and convenience.

[0047] In the above embodiment, an example has been given of attaching handrail posts as structures to a grating floor material, but in the present invention, the structures are not limited to posts, and the present invention can be similarly applied to other structures.

[0048] In addition, in the above embodiment, an example was given of fixing one end of the reinforcing member to the support (support body), but this is not limited to this, and in the present invention, one end of the reinforcing member may also be fixed to the base of the support. [Explanation of symbols]

[0049] 2: Grating floor material 21:Treadboard 22: Long hole 23a: One end rib, other end rib 4: Reinforcement material 41:One end 42: Middle section 43:Other end 5: Handrail 51: Strut 6: Bass

Claims

1. A structure mounting structure for a grating floor material, in which a plurality of long holes are formed in a long plate-shaped step in a parallel arrangement along the length of the step, and a base of a structure is fixed to an upper surface of one end side in the length direction of the long holes, a reinforcing member having one end, a middle portion and another end portion provided along the longitudinal direction of the long hole; A structure mounting structure for a grating floor material, characterized in that the one end is fixed to the structure, the middle portion is inserted into any one of the long holes of the grating floor material to be positioned from the upper surface side to the lower surface side of the tread, and the other end is positioned so as to abut and engage with the lower surface side of the tread on the other end side of any of the long holes.

2. A rib protruding downward is formed on the outer peripheral edge of each long hole in the grating floor material, A structure mounting structure for a grating floor material as described in claim 1, wherein the vicinity of the other end of the intermediate portion of the reinforcing member is positioned so as to abut and engage with the lower end of the rib on the other end side of any of the long holes.

3. 3. A structure mounting structure for a grating floor material according to claim 1 or 2, wherein the structure is constituted by a handrail support on which the base is provided.

4. A structure reinforcing member for a grating floor material is used in a structure in which a base of a structure is fixed to the upper surface of one end side in the longitudinal direction of a grating floor material having a long plate-shaped step with a plurality of long holes formed in parallel along the longitudinal direction of the step, One end portion, a middle portion and another end portion are provided along the longitudinal direction of the long hole, A structure reinforcement member for a grating floor material, characterized in that the one end is configured to be fixed to the structure, the middle portion is configured to be positioned from the upper surface side to the lower surface side of the tread by being inserted into any of the long holes of the grating floor material, and the other end is configured to be able to abut against the underside of the tread on the other end side of the other end of any of the long holes and be engaged.

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