Spacers and methods for laying perforated steel floors

Abstract

To provide a spacer or the like for a perforated steel plate floor, which has a simple structure and is easy to manufacture and install.SOLUTION: A spacer 3 includes: a substantially U-shaped space holding portion 32 having an upper surface member and a pair of side surface members; and locking portions 31 fixed to the upper surface member so as to protrude from both sides of the space holding portion 32. When installing the spacer 3, the space holding portion 32 is inserted into a gap 5 between adjacent perforated steel plate floors 1, protruding portions of the locking portions 31 protruding from the space holding portion 32 are arranged on the adjacent perforated steel plate floors 1, and the protruding portions are fixed to the adjacent perforated steel plate floors 1 with screws 4.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a spacer or the like for maintaining the distance between perforated steel plate floors. [Background technology]

[0002] When providing an equipment space on the rooftop of a building, the floor may be constructed by laying a plurality of perforated steel plate floors as shown in Patent Documents 1 and 2.

[0003] Patent Document 1 describes a connecting fitting for connecting adjacent perforated steel plate floors and preventing the occurrence of steps between the perforated steel plate floors, which is positioned to straddle the space between adjacent perforated steel plate floors and has upper and lower members that engage with the perforated steel plate floors and are connected by a bolt passed between the adjacent perforated steel plate floors.

[0004] Patent document 2 also describes a fixing bracket for fixing a perforated steel plate floor onto a beam, which is positioned to straddle adjacent perforated steel plate floors, and connects an upper bracket that engages with these perforated steel plate floors and a lower bracket that engages with the flange of the beam with a bolt passed between adjacent perforated steel plate floors, connecting adjacent perforated steel plate floors to each other and fixing these perforated steel plate floors to the beam at the same time. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2005-194805 A [Patent Document 2] JP 2008-144553 A Summary of the Invention [Problem to be solved by the invention]

[0006] Perforated steel floors that people walk on must be laid with a gap of 30mm or less between adjacent perforated steel floors to meet standards such as occupational safety and health regulations. If the gaps are too large, it is dangerous as workers may trip or lose their footing. There is also a need for perforated steel floors to be laid with gaps of a constant width (30mm or less). Gaps of 10mm or 30mm in some places look unattractive and make it difficult to correctly assess the required man-hours for materials, labor, etc.

[0007] However, laying a perforated steel floor while maintaining a constant gap width is more difficult than laying a perforated steel floor without gaps, and spacers are required between the perforated steel floors when considering the construction aspect. In this regard, the metal fittings in Patent Documents 1 and 2 can be considered as spacers in that bolts and the like are placed between the perforated steel floors, but they have a complex structure and require a lot of work to manufacture and install.

[0008] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a spacer or the like for a perforated steel plate floor that has a simple structure and is easy to manufacture and install. [Means for solving the problem]

[0009] The first invention for achieving the above-mentioned object is a spacer for maintaining the distance between adjacent perforated steel plate floors, comprising a substantially U-shaped spacing retaining part having a top member and a pair of side members, which is inserted into the gap between adjacent perforated steel plate floors, and a spacer fixed to the top member and protruding on both sides of the spacing retaining part, the protruding parts being fitted onto the adjacent perforated steel plate floors. Without watertight material and a plate-shaped engaging portion disposed on the spacer. The second invention is a spacer for maintaining the distance between adjacent perforated steel plate floors, comprising a substantially square-shaped spacing retaining part having an upper surface member, a lower surface member, and a pair of side surfaces that is inserted into the gap between adjacent perforated steel plate floors, and a spacer fixed to the upper surface member and protruding on both sides of the spacing retaining part, the protruding parts being fitted onto the adjacent perforated steel plate floors. Without watertight materialand a plate-shaped engaging portion disposed on the spacer.

[0010] The spacer of the present invention has a simple structure in which the plate-shaped locking portion is fixed to the upper surface member of the approximately U-shaped or approximately R-shaped spacing portion, and can be easily manufactured using readily available general-purpose products. Also, it can be easily attached to the perforated steel floors by inserting the spacing portion into the gap between adjacent perforated steel floors and positioning the protruding portion of the locking portion on these perforated steel floors.

[0011] The third invention is a spacer for maintaining the distance between adjacent perforated steel plate floors, comprising: a substantially U-shaped spacing retaining portion having an upper surface member and a pair of side surfaces member, which is inserted into the gap between adjacent perforated steel plate floors; and a plate-shaped engaging portion fixed to the upper surface member, protruding on both sides of the spacing retaining portion, the protruding portions being positioned on the adjacent perforated steel plate floors; The locking portion has claws bent downward at both ends, and the claws are inserted into holes in adjacent perforated steel plate floors. The spacer is characterized by the above. The fourth invention is a spacer which maintains the gap between adjacent perforated steel plate floors, comprising a roughly U-shaped spacing retaining part which has an upper surface member, a lower surface member and a pair of side surfaces member and which is inserted into the gap between adjacent perforated steel plate floors, and a plate-shaped engaging part which is fixed to the upper surface member and protrudes on both sides of the spacing retaining part, with the protruding parts being placed on the adjacent perforated steel plate floors, and the engaging part has claw parts which are bent downwards at both ends, and the claw parts are inserted into holes in the adjacent perforated steel plate floors. This makes it easy to install the spacer. There is no warping or other problems that would occur at the engaging portion, as occurs when fastening to a wooden floor with screws.

[0012] No. 5 The invention is the first from No. 4 This is a method for laying a perforated steel plate floor using a spacer of any of the above-mentioned inventions, characterized in that it comprises the steps of: placing a new perforated steel plate floor with a gap from an existing perforated steel plate floor; providing a plurality of the spacers at intervals in the extension direction of the gap so that the spacing retaining portion is inserted into the gap and the protruding portion of the engaging portion is positioned on the existing perforated steel plate floor and the new perforated steel plate floor; and pressing the new perforated steel plate floor against the existing perforated steel plate floor and abutting an end of the new perforated steel plate floor and an end of the existing perforated steel plate floor against the spacing retaining portion. This makes it possible to easily lay the perforated steel plate floor using spacers and to maintain the width of the gap in the perforated steel plate floor at a constant value. Effect of the Invention

[0013] According to the present invention, it is possible to provide a spacer for a perforated steel plate floor which has a simple structure and is easy to manufacture and install. [Brief description of the drawings]

[0014] [Figure 1] FIG. [Diagram 2] A diagram showing the state in which the spacer 3 is attached to the perforated steel plate floor 1. [Diagram 3] FIG. 2 is a diagram showing a method of laying a perforated steel plate floor 1 using a spacer 3. [Figure 4] FIG. 2 is a diagram showing spacers 3a and 3b. [Diagram 5] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0016] 1 is a diagram showing a spacer 3 according to an embodiment of the present invention. The spacer 3 is used to maintain a constant distance between adjacent perforated steel plate floors, and is configured by fixing a distance maintaining portion 32 to an engagement portion 31.

[0017] The locking portions 31 are plate-shaped steel members, and are provided so as to protrude on both sides of the spacing portion 32. Screw holes 33 are provided in the portions of the locking portions 31 that protrude from the spacing portion 32. The locking portions 31 are made of, for example, a steel plate.

[0018] The spacing maintaining part 32 is a steel member having a substantially U-shaped cross section, and has an upper surface member 321 and a pair of side surface members 322 arranged on both sides thereof. The locking part 31 is fixed to the upper surface member 321 of the spacing maintaining part 32 by a welded part 34. A steel material such as a channel material is used for the spacing maintaining part 32.

[0019] FIG. 2(a) shows the state in which the spacer 3 has been attached to the perforated steel plate floor 1, and FIG. 2(b) is a view of FIG. 2(a) seen from the front side.

[0020] The perforated steel plate deck 1 is a steel plate deck having holes 13, and has a flat deck portion 11 as shown in Fig. 2(a). The deck portion 11 has a rectangular shape in plan, and both ends 12 in the short side direction are bent downward. The lower end of the bent portion is further folded back inward.

[0021] Holes 13 are formed in the deck slab portion 11. The holes 13 are long holes extending in the short side direction of the deck slab portion 11, and a plurality of holes 13 are provided at intervals in the long side direction of the deck slab portion 11 in the center of the short side direction of the deck slab portion 11.

[0022] A plurality of perforated steel plate floors 1 are laid side by side on beams (not shown). These perforated steel plate floors 1 are adjacent to each other in the short side direction of the deck slab portion 11, and a gap 5 is formed between adjacent perforated steel plate floors 1. Spacers 3 are attached to adjacent perforated steel plate floors 1, and keep the width of the gap 5 constant by means of spacing retainers 32. For the safety of workers, this width is set to 30 mm or less to prevent tripping or slipping.

[0023] When installing the spacer 3, the spacing retaining portion 32 is inserted into the above-mentioned gap 5, and the protruding portion of the locking portion 31 protruding from the spacing retaining portion 32 is placed on the deck slab portion 11 of the adjacent perforated steel plate floor 1, and the protruding portion is fixed to the deck slab portion 11. In this embodiment, the protruding portion of the locking portion 31 is fixed to the deck slab portion 11 of the perforated steel plate floor 1 by the screw 4 screwed into the screw hole 33 (see Figure 1). Multiple spacers 3 are provided at intervals in the extension direction of the gap 5.

[0024] FIG. 3 is a diagram showing a method of laying a perforated steel plate floor 1 using a spacer 3. In this embodiment, as shown by the arrow a in FIG. 3(a), a perforated steel plate floor 1 (a new perforated steel plate floor) is placed next to the existing perforated steel plate floor 1 with a gap 5 of an appropriate width. Then, as shown in FIG. 3(b), the spacing retaining portion 32 of the spacer 3 is inserted into the gap 5 between the perforated steel plate floors 1, and the protruding portion of the locking portion 31 protruding from the spacing retaining portion 32 is placed on the deck portion 11 of both perforated steel plate floors 1. In this way, a plurality of spacers 3 are provided at intervals in the extension direction of the gap 5 (corresponding to the normal direction of the paper surface in FIG. 3(b)). The spacers 3 are manufactured in advance at a factory or at a construction site.

[0025] Next, as shown by the arrow b in Figure 3(b), the subsequently placed perforated steel plate floor 1 (new perforated steel plate floor) is pressed against the existing perforated steel plate floor 1. This causes the ends 12 of both perforated steel plate floors 1 to abut against the spacing retaining parts 32 as shown in Figure 3(c), and the width of the gap 5 becomes the width of the spacing retaining parts 32 of the spacer 3. After that, as shown in Figure 3(d), the protruding parts of the engaging parts 31 are fixed to the deck part 11 with the screws 4.

[0026] As described above, the spacer 3 of this embodiment has a simple configuration in which the plate-shaped locking portion 31 is fixed to the upper surface member 321 of the approximately U-shaped spacing retaining portion 32, and can be easily manufactured using readily available general-purpose products such as steel plates and channel materials. Also, by inserting the spacing retaining portion 32 into the gap 5 between adjacent perforated steel plate floors 1 and positioning the protruding portion of the locking portion 31 on these perforated steel plate floors 1, attachment to the perforated steel plate floors 1 can be easily performed.

[0027] Furthermore, the installation method described in FIG. 3 allows the perforated steel plate floor 1 to be easily installed using the spacers 3, and the width of the gap 5 in the perforated steel plate floor 1 can be maintained at a constant value.

[0028] However, the present invention is not limited to the above embodiment. For example, in this embodiment, the locking portion 31 and the spacing portion 32 are fixed by welding, but the fixing method is not particularly limited as long as the locking portion 31 and the spacing portion 32 are fixed so as not to move relative to each other. For example, as shown in the spacer 3a in Fig. 4(a), the locking portion 31 may be fixed to the upper surface member 321 of the spacing portion 32 using one or more screws 35. This makes it possible to easily fix the locking portion 31 and reduce the manufacturing cost.

[0029] Furthermore, the shape, configuration, etc. of the spacer 3 are not particularly limited, and for example, the cross section of the spacing retaining portion 32b may be substantially square-shaped, as in the spacer 3b in Fig. 4(b). The spacing retaining portion 32b has an upper surface member 321, a lower surface member 323, and a pair of side surface members 322, and the upper surface member 321 and the lower surface member 323 are connected vertically by the side surface members 322. Steel material such as easily available square steel pipes can be used for the spacing retaining portion 32b, and the same effects as those described above can be obtained.

[0030] As shown in spacer 3c in Fig. 5(a), locking portion 31c may be narrow and both ends bent downward to provide claws 36. When installing spacer 3c, as shown in Fig. 5(b), spacing portion 32 is inserted into gap 5 between adjacent perforated steel plate floors 1, the protruding portion of locking portion 31c protruding from spacing portion 32 is placed on deck portion 11 of adjacent perforated steel plate floor 1, and claws 36 at both ends of locking portion 31c are inserted into holes 13 in both perforated steel plate floors 1, respectively. This makes it easy to install spacer 3c.

[0031] As in the example of Figure 2, when screws 4 are used to secure the locking portion 31, if the screws 4 are tightened too much, the protruding portion of the locking portion 31 may warp upward (see dashed line A in Figure 2(b)), which may cause the worker to trip. To avoid this, it is effective to prevent the screws 4 from being tightened too much, but it is also effective to attach the locking portion 31c to the perforated steel plate floor 1 with the claws 36 as shown in Figure 5(b), which also prevents the above-mentioned warping from occurring, prevents the worker from tripping, and allows the spacing function to be fully exerted.

[0032] In the example of Fig. 5, the width of the locking portion 31c is equal to or smaller than the width of the hole 13 (long hole), and one claw portion 36 is provided at each end of the locking portion 31c, thereby making the spacer 3c have a minimum configuration, but the width of the locking portion 31c may be increased to provide multiple claw portions 36 at each end of the locking portion 31c, and these claw portions 36 may be inserted into multiple holes 13. Also, in the example of Fig. 5, the spacing portion 32 protrudes on both sides in the width direction of the locking portion 31c, but the spacing portion 32 may be short and fit within the width of the locking portion 31c.

[0033] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to such an example. It is clear that a person skilled in the art can come up with various modified or altered examples within the scope of the technical ideas disclosed in this application, and it is understood that such examples also naturally belong to the technical scope of the present invention. [Explanation of symbols]

[0034] 1: Perforated steel floor 3, 3a, 3b, 3c: Spacers 4, 35: Bis 5: Gap 13: Hole 31, 31c: Locking part 32, 32b: Spacing holding part 33: Screw hole 34: Welded section 36: Claw part 321: Top member 322: Side member 323: Lower surface member

Claims

1. A spacer that maintains the distance between adjacent perforated steel plate floors, a substantially U-shaped spacer having an upper surface member and a pair of side surface members, the spacer being inserted into the gap between adjacent perforated steel plate floors; a plate-shaped engaging portion fixed to the upper surface member and extending on both sides of the spacing retaining portion, the extending portions being disposed on the adjacent perforated steel plate floors without having a watertight material; A spacer comprising:

2. A spacer that maintains the distance between adjacent perforated steel plate floors, a substantially square-shaped spacer having an upper surface member, a lower surface member, and a pair of side surface members, which is inserted into the gap between adjacent perforated steel plate floors; a plate-shaped engaging portion fixed to the upper surface member and extending on both sides of the spacing retaining portion, the extending portions being disposed on the adjacent perforated steel plate floors without having a watertight material; A spacer comprising:

3. A spacer for maintaining the distance between adjacent perforated steel plate floors, a substantially U-shaped spacer having an upper surface member and a pair of side surface members, the spacer being inserted into the gap between adjacent perforated steel plate floors; a plate-shaped engaging portion that is fixed to the upper surface member and protrudes on both sides of the spacing retaining portion, the protruding portions being placed on the adjacent perforated steel plate floors; Equipped with The locking portion has claw portions bent downward at both ends thereof, A spacer characterized in that the claw portions are inserted into holes in adjacent perforated steel plate floors.

4. A spacer for maintaining the distance between adjacent perforated steel plate floors, a substantially square-shaped spacer having an upper surface member, a lower surface member, and a pair of side surface members, which is inserted into the gap between adjacent perforated steel plate floors; a plate-shaped engaging portion that is fixed to the upper surface member and protrudes on both sides of the spacing retaining portion, the protruding portions being placed on the adjacent perforated steel plate floors; Equipped with The locking portion has claw portions bent downward at both ends thereof, A spacer characterized in that the claw portions are inserted into holes in adjacent perforated steel plate floors.

5. A method for laying a perforated steel floor using the spacer according to any one of claims 1 to 4, comprising: placing a new perforated steel floor over a gap from the existing perforated steel floor; a step of providing a plurality of the spacers at intervals in the extension direction of the gap so that the spacing retaining portion is inserted into the gap and the protruding portion of the engaging portion is positioned on the existing perforated steel plate floor and the new perforated steel plate floor; A process of pressing the new perforated steel plate floor against the existing perforated steel plate floor and abutting an end of the new perforated steel plate floor and an end of the existing perforated steel plate floor against the spacing retaining portion; A method for laying a perforated steel floor, comprising the steps of:

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