Floor fixing member, and inspection path equipped with said floor fixing member

Abstract

The present invention provides a floor fixing member and inspection walkway that can fix flooring materials to the main beam without hindering the ease of movement of workers. [Solution] The floor fixing member 110 comprises a pressing portion 110a that presses the edge of the floor material 103 from above, and a fixing body portion 110p that is connected to the outer end of the pressing portion 110a in the inspection path width direction and fixed to the upper surface of the main girder 101 by bolts 155. The fixing body portion 110p has a bolt mounting space 110d into which the bolts 155 are mounted. The bolt mounting space 110d is a space located between the upper and lower surfaces of the fixing body portion 110p and is closed at the top, and has a head housing portion 110e that accommodates the bolt head 155a, and a shaft penetration portion 110f formed in the lower wall of the head housing portion 110e through which the bolt shaft portion 155b passes vertically.

Description

Technical Field

[0005]

[0001] The present invention relates to a floor fixing member and an inspection path provided with the floor fixing member.

Background Art

[0002] Conventionally, inspection paths installed under elevated roads or on the sides of bridge piers are known. This inspection path is installed for inspecting and repairing damaged parts (see, for example, Patent Document 1).

[0003] The inspection path includes a pair of main girders extending along both ends of the inspection path, and a plurality of floor materials arranged across the pair of main girders. The pair of main girders are arranged opposite to each other with a gap therebetween. The plurality of floor materials are arranged adjacent to each other along the extending direction of the main girder. The edge portions extending along the extending direction of the main girder in each floor material are constituted by bolts on the upper surface of the main girder.

Prior Art Documents

Patent Documents

[0004] [[ID=2​​​​​​​​​​​​​​​​​​​​​​​​The floor fixing member according to the first invention is a floor fixing member for fixing an edge portion of a flooring material that extends in the direction of the length of an inspection path, which is provided in an inspection path on which workers walk, to the upper surface of a main girder that extends in the direction of the length of the inspection path, comprising: a pressing portion that presses the edge portion of the flooring material from above; and a fixing body portion that is connected to the outer end of the pressing portion in the direction of the width of the inspection path and is fixed to the upper surface of the main girder by bolt, wherein the bolt has a bolt head and a bolt shaft portion, and the fixing body portion has a bolt mounting space into which the bolt is mounted, the bolt mounting space is located between the upper and lower surfaces of the fixing body portion and consists of a head housing portion that accommodates the bolt head, and a shaft penetration portion formed in the lower wall of the head housing portion through which the bolt shaft portion passes vertically.

[0008] With this configuration, the bolt head is housed in the head housing, which is a space formed between the upper and lower surfaces of the floor fixing member. This prevents the bolt head from protruding into the walking area and hindering the ease of movement of workers. Furthermore, since the upper part of the space forming the head housing is closed, no counterbore holes for bolt mounting are formed on the upper surface of the fixing body. Therefore, the ease of movement of workers can be improved as much as possible.

[0009] The second invention is preferable in the first invention such that the upper surface of the pressing portion and the upper surface of the fixing body portion are continuously connected to each other to form a single flat surface.

[0010] This configuration eliminates steps and grooves on the upper surface of the floor-fixing members, further improving ease of movement for workers.

[0011] The third invention is preferable in the first or second invention, wherein the fixed body portion has a seating surface that is placed on the upper surface of the main girder, and the bolt mounting space is configured to allow the bolts to be attached and detached along a predetermined direction extending parallel to the seating surface.

[0012] This configuration allows bolts to be installed in the bolt mounting space along a predetermined direction parallel to the seating surface, eliminating the need to form bolt mounting holes or openings on the upper surface of the fixing body. Therefore, bolts can be easily installed in the bolt mounting space while ensuring the flatness of the upper surface of the fixing body and improving ease of walking for workers.

[0013] The fourth invention is that, in the third invention, it is preferable that the bolt mounting space extends over the entire fixed body portion in the predetermined direction.

[0014] With this configuration, when installing a bolt in the bolt mounting space, the bolt can be slid in a predetermined direction. Therefore, the alignment of the bolt when assembling the floor fixing member can be easily performed.

[0015] The fifth invention is the fourth invention, wherein the bolt head has a polygonal shape having a pair of opposing surfaces facing each other in the radial direction when viewed from its axial direction, and the head housing has a pair of guide surfaces that face each other on either side of the bolt head in a direction perpendicular to the predetermined direction and extend in the predetermined direction, and the distance between the pair of guide surfaces is preferably set to be equal to the distance between the pair of opposing surfaces of the bolt head so that the rotation of the bolt head around its axis can be restricted by the pair of guide surfaces. Here, "equal" does not mean that it is an exact same value as the distance between the pair of opposing surfaces of the bolt head, but it may be slightly smaller or slightly larger than the distance between the pair of opposing surfaces. In the former case, it will be somewhat of a press fit, and in the latter case, it will be somewhat of a gap fit.

[0016] This configuration prevents the bolt from rotating along with the nut when using a nut during bolt fastening.

[0017] The inspection path according to the sixth invention further comprises a floor material having an edge portion extending in the longitudinal direction of the inspection path, a main beam extending in the longitudinal direction of the inspection path, a floor fixing member according to the first or second invention, and a lateral member having a toe plate portion that extends in the longitudinal direction of the inspection path and is arranged to demarcate the outer end in the width direction of the inspection path of the inspection walking area in the inspection path, wherein the fixing body portion extends from the outer end in the width direction of the inspection path of the pressing portion to a position that contacts the toe plate portion.

[0018] With this configuration, the fixing body of the floor fixing member extends from the outer end of the pressing portion in the inspection path width direction to the position where it contacts the toe plate portion, thus preventing a gap from forming between the toe plate portion and the fixing body portion. Consequently, it is possible to prevent the ease of walking for workers from being hindered by such a gap.

[0019] The seventh invention is preferable in the sixth invention, wherein the lateral member has an engaged portion located inward in the inspection path width direction from the toe plate portion, and the fixing body portion of the floor fixing member further has an engaged portion that engages with the engaged portion of the lateral member.

[0020] With this configuration, by providing an engaging portion on the fixing body of the floor fixing member that engages with the engaged portion of the toe plate, the floor fixing member can also be used to fix the toe plate. Therefore, the number of parts can be reduced and costs can be lowered compared to the case where a dedicated member is provided for fixing the toe plate. In addition, when assembling or disassembling the inspection walkway, the engaged portion of the toe plate can be engaged with the engaging portion of the fixing body, allowing the lateral member including the toe plate and the floor fixing member to be handled as a single unit. This prevents the lateral member from falling off and makes the assembly of the inspection walkway easier. [Effects of the Invention]

[0021] According to the present invention, a floor fixing member that can fix flooring material to a main beam without hindering the ease of walking for workers is provided, and an inspection path equipped with the floor fixing member is provided. [Brief explanation of the drawing]

[0022] [Figure 1] Figure 1 is a schematic diagram showing an installation example of an inspection path in the present embodiment. [Figure 2] Figure 2 is a sectional view taken along line II-II of Figure 1. [Figure 3] Figure 3 is a view seen in the direction of arrow III of Figure 2. [Figure 4] Figure 4 is an enlarged view showing an enlarged portion IV of Figure 2. [Figure 5] Figure 5 is an enlarged view showing an enlarged portion V of Figure 2. [Figure 6] Figure 6 is a side view seen from the outside in the width direction of the inspection path showing the arrangement structure of the floor material. [Figure 7] Figure 7 is an enlarged view of portion VII of Figure 4 showing the fixing structure of the floor material by the floor fixing member. [Figure 8] Figure 8 is a perspective view showing the floor fixing member. [Figure 9] Figure 9 is a view corresponding to Figure 7 showing a modified example of the embodiment. [Figure 10] Figure 10 is an explanatory diagram for explaining the configuration of the floor material in another embodiment.

Mode for Carrying Out the Invention

[0023] Hereinafter, an inspection path 100 including a floor fixing member 110 according to an embodiment of the present invention will be described with reference to the drawings.

[0024] Figure 1 is a schematic diagram showing an installation example of the inspection path 100 in the present embodiment. In this example, the inspection path 100 is installed on the side surface of a pier 201 that supports an elevated road 200. The pier 201 supports the elevated road 200 via four H-shaped steels 202. The inspection path 100 extends along the pier width direction (the left-right direction in Figure 1) at the upper end of the side surface of the pier 201.

[0025] Figure 2 is a cross-sectional view taken along line II-II in Figure 1, and Figure 3 is a view taken in the direction of arrow III in Figure 2. Figure 4 is an enlarged view showing section IV in Figure 2, Figure 5 is an enlarged view showing section V in Figure 2, and Figure 6 is a side view taken from the outside in the direction of the inspection path width, showing the arrangement structure of the floor material 103.

[0026] As shown in Figures 2 and 3, the inspection walkway 100 is supported by the upper surfaces of a plurality of support brackets 210 that project horizontally from the side of the pier 201. The plurality of support brackets 210 are spaced apart from each other in the longitudinal direction of the inspection walkway (perpendicular to the plane of the paper). Each support bracket 210 has an H-shaped cross-section perpendicular to its projection direction, and is formed so that its height dimension decreases towards the tip. The base end of each support bracket 210 is fixed to the side of the pier 201 via, for example, four anchor bolts 211. Each support bracket 210 has an upper horizontal plate portion 210a. The upper surface of the upper horizontal plate portion 210a is a horizontal flat surface that supports the inspection walkway 100. The number of anchor bolts 211 used to fix each support bracket 210 is not limited to four.

[0027] The inspection walkway 100 comprises a pair of main girders 101, a plurality of cross girders 102, a plurality of flooring materials 103, a plurality of floor fixing members 110, a plurality of lateral members 104, and a plurality of support columns 105. These lateral members 104 and support columns 105 are provided only at the end of the inspection walkway 100 opposite to the bridge pier 201 side (referred to as the anti-pier side), and together with the handrail members 106 and crossbars 107, they form a fall prevention fence. In this embodiment, each component constituting the inspection walkway 100 is made of aluminum alloy, but it is not limited to this, and may be made of resin, steel, or the like.

[0028] Referring to Figure 2, the pair of main girders 101 are spaced apart from each other in the direction of the width of the inspection path. The pair of main girders 101 extend parallel to each other along the direction of the length of the inspection path. In this example, the length of each main girder 101 is 3m, but this is not the only length.

[0029] Referring to Figures 4 and 5, the main girder 101 has an upper plate portion 101a, a lower plate portion 101b, and an upper and lower connecting portion 101c.

[0030] Both the upper plate portion 101a and the lower plate portion 101b consist of rectangular horizontal plate portions that extend along the length of the inspection path (the direction perpendicular to the plane of the paper in each figure).

[0031] The upper surface of the upper plate portion 101a constitutes a support surface for supporting the edge portion of the flooring material 103, and a seating surface for the floor fixing member 110 for fixing the flooring material 103. The upper plate portion 101a has bolt through holes 101g that penetrate vertically, and the floor fixing member 110, which will be described later, is fixed to the upper plate portion 101a by bolts 155 that pass through these bolt through holes 101g. The bolt 155 has a bolt head 155a and a bolt shaft portion 155b connected to the seating surface of the bolt head 155a. A male thread portion is formed on the outer circumferential surface of the bolt shaft portion 155b. The bolt head 155a has a hexagonal shape (an example of a polygonal shape) when viewed from its axial direction. That is, the bolt head 155a has a hexagonal prism shape. The distance between a pair of opposing faces on the side surface of the bolt head 155a is the so-called two-sided width.

[0032] The lower surface of the lower plate portion 101b constitutes a supported surface that is supported by the upper surface of the support bracket 210. The lower plate portion 101b is fixed to the upper horizontal plate portion 210a of the support bracket 210 via bolts 153 and nuts 154. A bolt mounting portion 101f is connected to the inner end of the lower plate portion 101b in the inspection path width direction. The bolt mounting portion 101f has a bolt mounting space 101e that extends in the inspection path length direction (perpendicular to the plane of the paper). The bolt mounting space 101e accommodates the head of the bolt 153 so that it can slide in the inspection path length direction with the threaded portion of the bolt 153 protruding downward. During assembly, the position of the bolt 153 can be adjusted by moving the bolt 153 along the bolt mounting space 101e.

[0033] The upper and lower connecting section 101c consists of a rectangular vertical plate section extending along the length of the inspection path (the direction perpendicular to the plane of the paper in each figure). The upper edge of the upper and lower connecting section 101c is connected to the lower surface of the upper plate section 101a. The lower edge of the upper and lower connecting section 101c is connected to the upper surface of the lower plate section 101b.

[0034] At both ends of the upper and lower connecting section 101c, a pair of bolt mounting spaces 101d are provided, spaced apart vertically. As shown in Figure 4, the pair of bolt mounting spaces 101d accommodate the heads of the bolts 151 so that they can slide in the direction of the length of the inspection path (perpendicular to the plane of the paper in Figure 4), with the threaded portion of the bolts 151 protruding outward in the direction of the width of the inspection path. The bolts 151 are used to fix the support columns 105 to the main girder 101, and no bolts 151 are provided on the main girder 101 on the pier 201 side (see Figure 5) where the support columns 105 are not fixed. During assembly, the position of the bolts 151 can be adjusted by moving them along the bolt mounting spaces 101d.

[0035] Multiple crossbeams 102 are arranged at intervals from each other in the direction of the length of the inspection path (the direction perpendicular to the plane of the paper in Figures 4 and 5). Each crossbeam 102 connects a pair of main girders 101 to each other. Specifically, each crossbeam 102 consists of an L-shaped angle member having a horizontal plate portion 102a and a vertical plate portion 102b. The horizontal plate portion 102a of each crossbeam 102 is spanned between the upper plate portions 101a of the pair of main girders 101. The horizontal plate portion 102a of each crossbeam 102 is fixed to the upper plate portions 101a of the pair of main girders 101 by bolts 155 and nuts 156 while in contact with them from below. The bolts 155 penetrate vertically through the upper plate portion 101a of each main girder 101 and the horizontal plate portion 102a of the crossbeam 102 below it. The nut 156 is screwed onto the threaded portion of the bolt 155 so as to abut against the lower surface of the horizontal plate portion 102a. The bolt 155 is also used as a fixing bolt to fix the floor fixing member 110, which will be described later, to the main girder 101.

[0036] Multiple floor panels 103 are arranged adjacent to each other in the length direction of the inspection path, with virtually no gaps between them, straddling a pair of main girders 101. Both ends of each floor panel 103 in the width direction of the inspection path are supported on the upper surface of the upper plate portion 101a of the pair of main girders 101.

[0037] Referring to Figure 6, each flooring material 103 is formed in the shape of a hollow rectangular frame when viewed from the width direction of the inspection path. At one end of each flooring material 103 in the length direction of the inspection path, a U-shaped recess 103a is formed that opens to that side. At the other end of each flooring material 103 in the length direction of the inspection path, a protrusion 103b is formed that projects to the other side. Both the recess 103a and the protrusion 103b are formed over the entire width direction of the flooring material 103. Adjacent flooring materials 103 are arranged without gaps, with the recess 103a and protrusion 103b engaged at their boundaries. In addition, the upper surface of each flooring material 103 has a non-slip knurling. In this example, the length of each flooring material 103 is set to 1m, but it is not limited to this.

[0038] The multiple floor fixing members 110 consist of multiple sets of floor fixing members 110, each set being a pair of left and right floor fixing members 110 as shown in Figure 2. The multiple sets of floor fixing members 110 are arranged at intervals in the direction of the length of the inspection path. In this embodiment, for example, two to three sets of floor fixing members 110 are provided for each of the multiple connected floor materials 103.

[0039] Each pair of floor fixing members 110 that make up the set fixes both ends of the floor material 103 in the width direction of the inspection path to the upper surface of the pair of main girders 101. In addition, the floor fixing member 110 located on the side opposite the bridge pier is also used as a member for fixing the lateral member 104. Note that since there is no lateral member 104 on the bridge pier side of the inspection path 100, the floor fixing member 110 is used only to fix the floor material 103.

[0040] As shown in Figure 4, the multiple lateral members 104 are located outside the floor material 103 in the width direction of the inspection path and are arranged almost without gaps in the length direction of the inspection path. Each lateral member 104 is positioned along both ends in the width direction of each floor material 103 (i.e., a pair of edges extending in the direction toward the inspection path) to prevent the toes of workers from protruding outside in the width direction of the inspection path.

[0041] More specifically, each lateral member 104 is an L-shaped cross-section member extending in the direction of the length of the inspection path, and has a vertically arranged toe plate portion 104a, a horizontally arranged horizontal plate portion 104b, and an engaging projection portion 104c. The toe plate portion 104a consists of a rectangular plate portion extending along the outer edge in the direction of the width of the inspection path on the upper surface of the main girder 101. The toe plate portion 104a demarcates the outer end in the direction of the width of the inspection path of the inspection walking area R (in this example, the outer end on the side opposite the bridge pier). The inspection walking area R is a predetermined area where workers can walk.

[0042] The horizontal plate portion 104b consists of a rectangular plate portion extending inward in the inspection path width direction from the lower end of the toe plate portion 104a. The engaging projection portion 104c is a rectangular projection portion that protrudes slightly upward from the tip of the horizontal plate portion 104b. Thus, the engaging projection portion 104c is located inward in the inspection path width direction by the width dimension of the horizontal plate portion 104b compared to the toe plate portion 104a. The engaging projection portion 104c extends along the tip edge of the horizontal plate portion 104b in the inspection path length direction.

[0043] The multiple support columns 105 are made of L-shaped angle members that extend vertically. The multiple support columns 105 are spaced apart from each other in the direction of the length of the inspection path. Each of the multiple support columns 105 has a first vertical plate portion 105a that abuts against the side surface of one main girder 101 located on the opposite side of the bridge pier, and a second vertical plate portion 105b that is connected perpendicularly to the vertically extending edge of the first vertical plate portion 105a. The first vertical plate portion 105a of each support column 105 is fixed to the main girder 101 via a bolt 151 and a nut 152. The bolt 151 is positioned horizontally with its head housed in the bolt mounting space 101d provided in the upper and lower connecting portion 101c of the main girder 101. The bolt 151 penetrates the first vertical plate portion 105a of the support column 105, and the nut 152 is screwed onto the threaded portion of the bolt 151.

[0044] Multiple support columns 105 are connected to their upper ends by handrail members 106 (see Figures 2 and 3), which extend in the direction of the length of the inspection path. Additionally, two horizontal bars 107, which extend in the direction of the length of the inspection path and are spaced apart vertically, are connected to the intermediate vertical sections of the multiple support columns 105.

[0045] [Configuration of floor fixing components] Figure 7 is an enlarged view of section VII of Figure 4, showing the fixing structure of the floor material 103 by the floor fixing member 110. Figure 8 is a perspective view showing the floor fixing member 110. Note that the floor fixing member 110 located on the opposite side of the bridge pier and the floor fixing member 110 located on the bridge pier side have the same shape, although there is a difference in whether or not the lateral member 104 is included as the object to be fixed. Therefore, in the following, only the configuration of the floor fixing member 110 located on the opposite side of the bridge pier will be described.

[0046] As shown in Figures 7 and 8, the floor fixing member 110 has a pressing portion 110a, a first connecting portion 110b, and a second connecting portion 110c. The first connecting portion 110b and the second connecting portion 110c constitute the fixing body portion 110p. The fixing body portion 110p is fixed to the upper surface of the main girder 101 via bolts 155. In this embodiment, the fixing body portion 110p is formed by extrusion of an aluminum alloy, but the material and manufacturing method of the floor fixing member 110 are not limited thereto. That is, the floor fixing member 110 may be formed by, for example, casting, cutting, lamination, etc.

[0047] The pressing portion 110a is shaped like a rectangular plate extending in the direction of the inspection path length and abuts against the upper surface of the edge portion of the floor material 103 that extends in the direction of the inspection path length. When the floor fixing member 110 is fixed to the main girder 101 by bolts 155, the pressing portion 110a is configured to press down from above on the edge portion of the floor material 103 that extends in the direction of the inspection path length.

[0048] The first connecting portion 110b is connected to the outer end of the pressing portion 110a in the direction of the inspection path width. The upper surface of the first connecting portion 110b is continuously connected to the upper surface of the pressing portion 110a to form a single flat plane 110g.

[0049] The first connecting portion 110b is formed in a rectangular parallelepiped shape that extends in the direction of the length of the inspection path when viewed externally. The first connecting portion 110b has a bolt mounting space 110d that extends in the direction of the length of the inspection path. The bolt mounting space 110d is configured to allow the bolt 155 to be attached and detached along the length of the inspection path. The inspection length is an example of a predetermined direction extending parallel to the seating surface 110j of the fixed body portion 110p. The bolt mounting space 110d accommodates the bolt 155 so that it can slide along the length of the inspection path with the bolt shaft portion 155b protruding below the first connecting portion 110b. The position of the bolt 155 can be adjusted by moving it along the length of the inspection path.

[0050] Specifically, the bolt mounting space 110d is formed to penetrate the entire length of the inspection path in the first connecting portion 110b.

[0051] The bolt mounting space 110d has a head housing portion 110e, which is a rectangular parallelepiped space extending in the direction of the length of the inspection path, and an axial penetration portion 110f that penetrates the lower wall of the head housing portion 110e vertically and extends in the direction of the length of the inspection path.

[0052] The head housing section 110e is a closed space located between the upper surface (a surface constituting part of the walking surface) and the lower surface (a surface placed on the main girder 101) of the first connecting section 110b. The head housing section 110e extends along the entire length of the inspection path of the first connecting section 110b. Both ends of the head housing section 110e in the length of the inspection path are open, and the bolt head 155a can be received from these open sections. The head housing section 110e accommodates the received bolt head 155a so that it can slide in the length of the inspection path.

[0053] The head housing 110e has a pair of guide surfaces 110q that face each other in the inspection path width direction, sandwiching the bolt head 155a. Each guide surface 110q is a vertical surface extending in the inspection path length direction. The head housing 110e restricts the rotation of the bolt 155 around its axis by engaging with the bolt head 155a. Specifically, the width dimension of the head housing 110e (i.e., the distance between the pair of guide surfaces 110q) is set to be equal to the two-sided width W of the bolt head 155a, that is, the distance between the pair of opposing surfaces facing each other in the radial direction, in order to restrict the rotation of the bolt head 155a. Here, "equal" does not mean that it is exactly the same as the distance between the pair of opposing surfaces of the bolt head 155a; it may be slightly smaller or slightly larger than the distance between the pair of opposing surfaces. In the former case, it will be somewhat of a press-fit, and in the latter case, it will be somewhat of a clearance fit. Furthermore, the shape of the bolt head 155a is not limited to a hexagonal prism shape; for example, it may be a square prism or the like. In other words, the bolt head 155a may have any shape as long as it has a pair of opposing surfaces that face each other.

[0054] A seating surface is formed at the boundary between the head housing portion 110e and the shaft penetration portion 110f, against which the lower surface of the bolt head 155a abuts. This seating surface is located below the upper surface of the floor material 103. Thus, the head housing portion 110e houses the bolt 155 such that the lower surface of the bolt head 155a is located below the upper surface of the floor material 103. In this embodiment, the upper wall surface of the head housing portion 110e is also located below the upper surface of the floor material 103. The upper end position of the bolt head 155a housed in the head housing portion 110e is located below the upper surface position of the floor material 103.

[0055] The shaft penetration portion 110f is formed so that the bolt shaft portion 155b extending from the bolt head 155a passes through it vertically. A threaded portion is formed on the outer circumferential surface of the bolt shaft portion 155b. The shaft penetration portion 110f is formed over the entire length of the inspection path in the first connecting portion 110b. Both ends of the shaft penetration portion 110f in the length of the inspection path are open, allowing the bolt shaft portion 155b to be received through these open portions. The portion of the bolt shaft portion 155b that protrudes downward from the shaft penetration portion 110f passes vertically through the upper plate portion 101a of the main girder 101 and the horizontal plate portion 102a of the cross girder 102 below it, and a fixing nut 156 is screwed onto this protruding portion.

[0056] The second connecting portion 110c is composed of a hollow portion extending in the direction of the length of the inspection path. The upper surface of the second connecting portion 110c is continuously connected to the upper surface of the first connecting portion 110b and the upper surface of the pressing portion 110a to form a single flat plane 110g. That is, the upper surfaces of the first connecting portion 110b and the second connecting portion 110c, which constitute the fixed main body portion 110p, and the upper surface of the pressing portion 110a are continuously connected to each other to form the plane 110g. This plane 110g, together with the upper surface of the flooring material 103, constitutes a walking surface.

[0057] The second connecting portion 110c extends from the outer end portion in the inspection path width direction of the first connecting portion 110b to the position where it abuts against the claw tip plate portion 104a of the side member 104. That is, the outer end face in the inspection path width direction of the second connecting portion 110c abuts against the inner face of the claw tip plate portion 104a of the side member 104. Thus, the second connecting portion 110c is arranged so as to fill the space between the first connecting portion 110b and the claw tip plate portion 104a. The second connecting portion 110c has a closed cross-sectional shape when viewed from the inspection path length direction. This realizes the strengthening and weight reduction of the second connecting portion 110c.

[0058] The inner portion 110h in the width direction on the lower surface of the second connecting portion 110c and the lower surface 110i of the first connecting portion 110b are continuously connected to form a seating surface 110j. The height H (see FIG. 8) from the seating surface 110j of the floor fixing member 110 to the lower surface of the pressing portion 110a is slightly smaller than the height h (see FIG. 7) of the floor material 103. That is, the relationship of H < h is satisfied. Thereby, when the floor fixing member 110 is fixed with the bolt 155, the floor material 103 can be pressed against the upper surface of the main girder 101 by the pressing portion 110a. That is, the pressing portion 110a applies a pressing force to the upper surface of the main girder 101 with respect to the floor material 103. Note that the pressing portion 110a does not necessarily have to apply a pressing force to the floor material 103 and may simply be arranged so as to cover the edge portion of the floor material 103. In other words, it is not necessarily required that H < h, and H = 0 or H > h may be possible.

[0059] The outer surface portion 110k located on the outer side in the width direction of the seating surface 110j on the lower surface of the second connecting portion 110c is configured to press the horizontal plate portion 104b of the side member 104 from above and engage with the engaged convex portion 104c.

[0060] Specifically, the outer surface portion 110k has a contact surface portion 110m that contacts the upper surface of the horizontal plate portion 104b of the side member 104 and an engagement concave portion 110n that engages with the engaged convex portion 104c of the side member 104. The engagement concave portion 110n is located between the contact surface portion 110m and the seating surface 110j.

[0061] When fixing the flooring material 103 with the floor fixing member 110 configured as described above, the flooring material 103 to be fixed is positioned so as to straddle a pair of main girders 101, and the side members 104 are positioned on the upper surface of the main girders 101. Then, a small assembly (see the dashed line in Figure 7) in which a bolt 155 is engaged with the bolt mounting space 110d of the floor fixing member 110 is attached to the flooring material 103 and the side members 104 from above. At this time, if the position of the bolt 155 is misaligned with the bolt through hole 101g formed in the upper plate portion 101a of the main girder 101, the position of the bolt 155 can be adjusted by sliding the bolt 155 along the bolt mounting space 110d. After the small assembly is attached, the floor fixing member 110 is fastened and fixed to the upper plate portion 101a of the main girder 101 by screwing a nut 156 onto the bolt 155. At this time, the height H (see Figure 8) from the seat surface 110j of the floor fixing member 110 to the lower surface of the pressing portion 110a is slightly smaller than the height h (see Figure 7) of the floor material 103, so when the bolt 155 is fastened, the floor material 103 is pressed against the upper plate portion 101a of the main beam 101.

[0062] [Effects and Effects] As described above, in this embodiment, the floor fixing member 110 comprises a pressing portion 110a that presses the edge portion of the floor material 103 from above, and a fixing body portion 110p that is connected to the outer end of the pressing portion 110a in the inspection path width direction and fixed to the upper surface of the main girder 101 by bolts 155. The fixing body portion 110p has a bolt mounting space 110d into which the bolts 155 are mounted. The bolt mounting space 110d is a space located between the upper and lower surfaces of the fixing body portion 110p and is closed at the top, and has a head housing portion 110e that accommodates the bolt head 155a, and a shaft penetration portion 110f formed in the lower wall of the head housing portion 110e through which the bolt shaft portion 155b passes vertically.

[0063] With this configuration, the bolt head 155a is housed in the head housing portion 110e formed inside the floor fixing member 110, thus preventing the bolt head 155a from protruding from the upper surface of the flooring material 103 and hindering the ease of movement of workers. Furthermore, since the upper side of the space forming the head housing portion 110e is closed, no counterbore holes for bolt mounting are formed on the upper surface of the fixing body portion 110p. Therefore, the ease of movement of workers can be improved as much as possible.

[0064] In this embodiment, the upper surface of the pressing portion 110a and the upper surface of the fixed body portion 110p are continuously connected to each other, forming a single flat surface.

[0065] With this configuration, no steps or grooves are created on the upper surface of the floor fixing member 110, which further improves the ease of walking for workers.

[0066] In this embodiment, the bolt mounting space 110d is configured to allow the bolt 155 to be attached and detached along the length direction of the inspection path (an example of a predetermined direction extending parallel to the seating surface 110j).

[0067] This configuration eliminates the need to form bolt mounting holes or openings on the upper surface of the fixed body portion 110p. Therefore, the flatness of the upper surface of the fixed body portion 110p is ensured, improving ease of walking for workers, while allowing bolts 155 to be easily mounted in the bolt mounting space 110d.

[0068] In this embodiment, the bolt mounting space 110d extends over the entire length of the inspection path in the fixed body portion 110p.

[0069] With this configuration, when installing the bolt 155 in the bolt mounting space 110d, the bolt 155 can be slid in the direction of the length of the inspection path. Therefore, the positioning of the bolt 155 when assembling the floor fixing member 110 can be easily performed.

[0070] In this embodiment, the bolt head 155a has a hexagonal shape when viewed from its axial direction. The head housing portion 110e has a pair of guide surfaces 110q that face each other in the inspection path width direction and extend in the inspection path length direction. The distance between the pair of guide surfaces 110q is set to be equal to the two-sided width W of the bolt head 155a so that the rotation of the bolt head 155a around its axis is restricted by the pair of guide surfaces 110q.

[0071] With this configuration, tightening the nut 156 prevents the bolt 155 from rotating together with it.

[0072] In this embodiment, the inspection path 100 further comprises a lateral member 104. The lateral member 104 has a toe plate portion 104a that is positioned to demarcate the outer end in the width direction of the inspection path within the inspection walking area R and extends in the length direction of the inspection path. The fixed body portion 110p extends from the outer end in the width direction of the inspection path of the pressing portion 110a to a position where it contacts the toe plate portion 104a of the lateral member 104.

[0073] This configuration prevents a gap from forming between the fixed main body portion 110p and the toe plate portion 104a. Consequently, it prevents the ease of walking for the worker from being hindered by this gap.

[0074] In this embodiment, the lateral member 104 has an engaging projection 104c as an engaging portion located inward in the inspection path width direction from the toe plate portion 104a. The fixing body portion 110p of the floor fixing member 110 further has an engaging recess 110n as an engaging portion that engages with the engaging projection 104c of the lateral member 104.

[0075] With this configuration, the floor fixing member 110 can also be used to fix the lateral member 104, including the toe plate portion 104a. Therefore, the number of parts can be reduced and costs can be lowered compared to the case where a dedicated member is provided for fixing the lateral member 104. In addition, when assembling or disassembling the inspection path 100, the engaging projection 104c of the lateral member 104 can be engaged with the engaging recess 110n provided on the fixing body portion 110p, allowing the lateral member 104 and the floor fixing member 110 to be handled as a single unit. This prevents the lateral member 104 from falling off and makes the assembly of the inspection path 100 easier.

[0076] (modified version) Figure 9 is a diagram corresponding to Figure 7, showing a modified example of the above embodiment. In this modified example, the engagement structure between the lateral member 104 and the floor fixing member 110 differs from that of the above embodiment. In the following description, the same reference numerals are used for components that are the same as in the above embodiment, and their detailed descriptions are omitted.

[0077] In this modified example, the lateral member 104 has a toe plate portion 104a and an engaged portion 104d that protrudes inward in the inspection path width direction from a portion slightly above the lower end of the toe plate portion 104a. The engaged portion 104d has a rectangular plate-shaped engaged plate portion 104e that protrudes horizontally from the inner surface of the toe plate portion 104a and a cylindrical engaged portion 104f connected to the tip edge of the engaged plate portion 104e. The cylindrical engaged portion 104f consists of a columnar portion with a circular cross-section that extends in the inspection path length direction along the tip edge of the engaged plate portion 104e. The cylindrical engaged portion 104f is formed along the entire edge of the tip edge of the engaged plate portion 104e.

[0078] The floor fixing member 110 has an engagement groove 110o that engages with the engaged portion 104d. The engagement groove 110o is formed in the second connecting portion 110c of the floor fixing member 110. The engagement groove 110o is formed in the portion of the second connecting portion 110c that faces the toe plate portion 104a. The vertical cross-sectional shape of the engagement groove 110o along the inspection path width direction corresponds to the cross-sectional shape of the engaged portion 104d of the lateral member 104. When engaging the engagement groove 110o with the engaged portion 104d, the engagement groove 110o is engaged with the engaged portion 104d from one side in the inspection path length direction.

[0079] In this way, by engaging the engaged portion 104d of the lateral member 104 with the engaging groove 110o of the floor fixing member 110, the lateral member 104 and the floor fixing member 110 can be integrated into a single unit that cannot be separated from each other. Therefore, during the assembly or disassembly of the inspection passage 100, the lateral member 104 can be prevented from falling off, thereby improving work efficiency.

[0080] (Other embodiments) Although an inspection passage 100 according to an embodiment of the present invention has been described above, the present invention is not limited thereto.

[0081] (1) In other words, although the above embodiments have described an example in which the inspection walkway 100 is installed on the side of the bridge pier 201, the inspection walkway 100 may be installed in any location. For example, the inspection walkway 100 may be placed on the underside of the elevated road 200. In this case, instead of the support bracket 210 shown in Figure 4, a horizontal connecting beam 203 (see Figure 1) that connects the H-shaped steel beams 202 of the elevated road 200 may be used, and the support columns 105 may be placed on both sides of the inspection walkway 100 in the width direction, not just on one side.

[0082] (2) In the above embodiment, the floor material 103 is formed in a hollow rectangular shape, but it is not limited to this, and for example, as shown in Figure 10, it may be formed in a U-shape that opens downward when viewed from the inspection path width direction (direction perpendicular to the inspection path length direction). That is, in the example of Figure 10, each floor material 103 is composed of a floor plate portion 103d and a pair of leg portions 103e that protrude downward from both ends of the floor plate portion 103d in the inspection path length direction. Reference numeral 108 in the figure indicates a connecting steel for connecting adjacent floor materials 103. The connecting steel 108 has an H-shaped cross-section. The leg portions 103e are configured to have engagement grooves that engage with the connecting steel 108. [Explanation of Symbols]

[0083] 100: Inspection path 101: Main digit 102: Crossbeam 103: Flooring 104: Side member 104a:Toe plate part 104c: Engaged convex part (engaged part) 104d: Engaged part 110: Floor fixing component 110a: Pressing part 110d: Bolt mounting space (bolt mounting space) 110e: Head housing (head housing) 110f: Shaft insertion groove (shaft penetration part) 110i: Bottom side 110j: Seat 110p: Fixed body part 110q: Guide surface 155: Bolt 155a: Bolt head 155b: Bolt shaft R: Walking area for examination W: Width between two surfaces (distance between two opposing surfaces)

Claims

1. A floor fixing member for fixing the edge portion of a flooring material that extends in the direction of the length of an inspection path, which is installed in an inspection path where workers walk, to the upper surface of a main beam that extends in the direction of the length of the inspection path, A pressing part that presses down on the edge portion of the flooring material from above, The fixing body portion is connected to the outer end of the retaining portion in the width direction of the inspection path and is fixed to the upper surface of the main girder by bolts, The bolt has a bolt head and a bolt shaft. The aforementioned fixed body portion has a bolt mounting space into which the bolt is mounted, The bolt mounting space is a floor fixing member that is located between the upper and lower surfaces of the fixing body and is closed at the top, and has a head housing portion for housing the bolt head, and a shaft penetration portion formed in the lower wall of the head housing portion through which the bolt shaft portion passes vertically.

2. In the floor fixing member according to claim 1, A floor fixing member in which the upper surface of the pressing portion and the upper surface of the fixing body portion are continuously connected to each other to form a single flat surface.

3. In the floor fixing member according to claim 1 or 2, The fixed main body has a seating surface that is placed on the upper surface of the main girder, The bolt mounting space is configured to allow the bolt to be attached and detached along a predetermined direction extending parallel to the seating surface, and is a floor fixing member.

4. In the floor fixing member according to claim 3, The bolt mounting space is a floor fixing member that extends over the entire length of the fixing body in the predetermined direction.

5. In the floor fixing member according to claim 4, The bolt head has a polygonal shape, having a pair of opposing surfaces that face each other in the radial direction when viewed from its axial direction. The head housing portion has a pair of guide surfaces that face each other on either side of the bolt head in a direction perpendicular to the predetermined direction and extend in the predetermined direction. A floor fixing member, wherein the distance between the pair of guide surfaces is set to be equal to the distance between the pair of opposing surfaces of the bolt head, so that the rotation of the bolt head around its axis can be restricted by the pair of guide surfaces.

6. A flooring material having an edge portion that extends in the longitudinal direction of the inspection path, The main girder extending in the longitudinal direction of the inspection path, A floor fixing member according to claim 1 or 2, A lateral member having a toe plate portion that extends in the direction of the length of the inspection path and is positioned to demarcate the outer end in the width direction of the inspection path of the inspection walking area in the inspection path, Equipped with, The fixed body portion is an inspection path that extends from the outer end in the width direction of the inspection path in the pressing portion to a position where it contacts the toe plate portion.

7. The inspection path according to claim 6, The lateral member has an engaging portion located inward in the inspection path width direction from the toe plate portion, An inspection passage, wherein the fixing body portion of the floor fixing member further has an engaging portion that engages with the engaged portion of the lateral member.

Images