CN212026786U - A fastener device suitable for detachable steel truss floor deck - Google Patents

Abstract

The utility model discloses a fastener device suitable for a detachable steel bar truss floor deck, comprising a plurality of fastener bodies, two rows of fastener bodies are fixedly installed on a bottom mold in a set of uniform intervals, and the bottom mold corresponds to The position of the fastener body is drilled respectively, and the self-tapping screw is passed through the hole of the bottom mold from bottom to top from the bottom of the bottom mold and the fastener body is fixed on the bottom mold; the fastener body is provided with a free end. Detour slot, detour slot consists of horizontal slot and vertical slot, detour slot is used to place steel truss. The fixing method of the new fastener device and the steel bar truss of the patent is simple and easy to operate, and the fastener structure is simple and reasonable, and the weight is light, which greatly saves the cost; There is no need to laterally extrude the lower chord steel bars, which simplifies the production process and achieves more efficient, fast and precise positioning.

Description

A fastener device suitable for detachable steel truss floor deck

technical field

The utility model relates to a fastener device, in particular to a fastener device for a detachable steel bar truss floor slab, belonging to the technical field of construction engineering.

Background technique

Steel structure prefabricated structures are developing very rapidly in our country, especially prefabricated steel structure residential buildings and high-rise steel structure office buildings. Under the encouragement of national policies, the system of steel structure prefabricated houses has been developed by leaps and bounds. Ordinary steel structure truss floor deck can no longer meet the needs of users. The bottom plate of ordinary steel truss is galvanized steel plate, which is prone to corrosion and affects the indoor effect. The surface of galvanized steel plate is not easy to be plastered, so it is necessary to carry out secondary decoration. Cost a lot of labor and cost. From the perspective of residential users, they prefer the underside of the concrete floor to be a traditional plaster layer rather than galvanized steel. Therefore, it is necessary to use a reinforced truss floor deck with a removable bottom form in a residence. After the slab concrete is poured, the bottom form is removed from the fastener to expose the concrete surface, and then plastering is performed on the concrete surface.

However, the installation process of the reinforcement trusses and fasteners of the existing floor deck is relatively complicated. During production, the reinforcement trusses are installed into the clamping grooves through mechanical operations, and the clamping grooves are on the side of the fasteners. During production, the two lower chord steel bars of the steel bar truss need to be squeezed and narrowed laterally, and then clamped into the grooves on the side of the fastener, which is easy to generate additional stress or plastic deformation on the longitudinal steel bars of the steel bar truss, which is unfavorable to the force of the floor slab. influences. At the same time, the existing traditional connecting fasteners have high requirements on material strength and high production costs.

Utility model content

The purpose of the utility model is to provide a fastener device suitable for a detachable steel truss floor deck, which can realize the quick connection and disassembly of the steel truss floor deck and the fastener.

In order to achieve the above purpose, the technical solution adopted by the present invention is that a fastener device suitable for a detachable reinforced truss floor deck comprises a plurality of fastener bodies, and the two rows of the fastener bodies are a group of evenly spaced ones. It is fixedly installed on the bottom mold, drill holes in the position corresponding to the fastener body of the bottom mold, and pass through the holes of the bottom mold from bottom to top through the self-tapping screw from the bottom of the bottom mold to fix the fastener body on the bottom. A circuitous groove with a free end is opened on the fastener body, the circuitous groove is composed of a horizontal clamping groove and a vertical clamping groove, and the circuitous groove is used for placing the steel bar truss.

Preferably, the steel bar truss includes upper chord steel bars, lower chord steel bars and web bars, there are two lower chord bars, and the web bars are used to connect the two lower chord bars and the upper chord bars;

The said web bar is also provided with a horizontal straight part at the part in contact with the lower chord bar, and the two ends of the horizontal straight part are respectively connected with the main body of the web bar through the connecting part to form a hanging lug. When the steel bar truss is installed in place, its seat position is in the horizontal slot, and the horizontal straight part is parallel to the lower chord steel bar.

In this patent, the fastener body is fixed on the bottom mold by self-tapping screws, and when the pouring is completed, the self-tapping screws are removed to remove the bottom mold. During the connection between the fastener body and the steel bar truss, in this patent, a detour slot is provided at the top of the fastener body. The detour slot is composed of a horizontal slot and a vertical slot, and the horizontal slot and the vertical slot are Form an L shape.

Its installation process is:

(1) Place the steel bar truss at the predetermined position of the fastener: place the steel bar truss from top to bottom, insert the horizontal straight part of the web bar from the free end of the circuitous slot into the vertical slot, and then place the steel bar truss horizontally. The inside of the slot is moved, so the steel truss is in place;

(2) Limit the steel truss: the fastener body is provided with vertical screw holes at the top, and the self-tapping screws can be tightened from top to bottom. The self-tapping screws penetrate the horizontal slot from the top to limit the reinforcement of the web bit;

(3) After the concrete is poured, the bottom formwork can be easily removed from the fastener body, and the concrete will not be damaged during the removal process, and the formwork can be reused.

The beneficial effects of the utility model: the fixing method of the novel fastener device of the present patent and the steel bar truss is simple and easy to operate, and the fastener structure is simple and reasonable, and the weight is light, which greatly saves the cost; the fastener body of the patent is provided with a circuitous circuit. groove, the steel bar truss does not need to laterally extrude the lower chord steel bars during the installation process, which simplifies the production process; moreover, the circuitous groove setting on the fastener body achieves more efficient, fast and accurate positioning; at the same time, bamboo plywood is used for The counter form allows for easier removal of the counter form.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is a partial enlarged view of A in Fig. 1;

4 is a schematic structural diagram of a fastener body;

5 is a schematic structural diagram of a fastener body;

Figure 6 is a schematic diagram of the connection structure of the steel bar truss and the fastener body;

Fig. 7 is the top view of Fig. 6;

Figure 8 is a schematic diagram of the structure of the web reinforcement

Fig. 9 is the top view of Fig. 8;

10 is a schematic structural diagram of another embodiment of the present invention;

In the picture: 1. Fastener body, 2. Bottom die, 3. Self-tapping screw, 4. Detour slot, 5. Horizontal clip slot, 6. Vertical clip slot, 7. Rebar truss, 8. Free end, 9. Top string bar, 10. Bottom string bar, 11. Web bar bar, 12. Horizontal straight part, 13. Connecting part, 14. Limiting device, 15. Chamfering part, 16. Fixed ear seat.

Detailed ways

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the present application will be clearly and completely described below with reference to the embodiments.

Example 1

As shown in Figures 1-9, the present utility model discloses a fastener device suitable for a detachable reinforced truss floor deck, comprising a plurality of fastener bodies 1, and the fastener bodies 1 are made of high-strength plastics , the two rows of the fastener body 1 are fixedly installed on the bottom mold 2 as a group of uniform intervals, drill holes in the position of the bottom mold 2 corresponding to the fastener body 1, and drill holes from the bottom mold 2 through self-tapping screws 3 from the bottom mold 2. The bottom passes through the hole of the bottom mold 2 from bottom to top and fixes the fastener body 1 on the bottom mold 2; the fastener body 1 is provided with a circuitous groove 4 with a free end 8, and the circuitous groove 4 It consists of a horizontal slot 5 and a vertical slot 6 , and the circuitous slot 4 is used for placing the steel bar truss 7 .

In this patent, the fastener body 1 is fixed from bottom to top from the bottom of the bottom mold 2 through self-tapping screws 3, which facilitates the removal of the bottom mold 1 after pouring. At the same time, the setting of the circuitous groove 4 not only realizes the fast and precise positioning of the steel bar truss 7, but also does not need to laterally extrude the lower chord steel bars during the installation process, which simplifies the manufacturing process.

The steel bar truss 7 includes upper chord bars 9, lower chord bars 10 and web bars 11, there are two lower chord bars 10, and the web bars 10 are used to connect two lower chord bars 10 and upper chord bars 9;

The web bar 11 is also provided with a horizontal straight portion 12 at the position in contact with the lower chord bar 10, and the two ends of the horizontal straight portion 12 are respectively connected with the main body of the web bar 11 through the connecting portion 13 to form a hanging ear, When the steel bar truss 7 is installed in place, the position of the horizontal straight portion 12 is in the horizontal slot 5 , and the horizontal straight portion 2 is parallel to the lower chord steel bar 10 .

The horizontal straight portion 12 is located outside the lower chord steel bar 10 , and an installation distance is formed between the horizontal straight portion 12 and the lower chord steel bar 10 .

In this patent, an innovative design is made for the structure of the steel bar truss, that is, a horizontal straight portion 12 is provided at the contact position of the web bar 11 and the lower chord steel bar 10, and a space is reserved between the horizontal straight portion 12 and the lower chord steel bar 10 certain installation distance. During the installation process of the reinforced truss 7, the reinforced truss 7 is put down from top to bottom, and the lower chord steel bar 10 enters the vertical slot 6 along the free end 8 of the circuitous groove 4 of the fastener body 1, and then pushes the reinforced truss 7 horizontally into the vertical slot 6. The horizontal slot makes it very convenient and accurate to put the huge steel truss into the fastener body, and there is no need to make too many adjustments to the steel truss.

After the steel bar truss 7 is installed in place, the horizontal straight portion 12 of the web steel bar 11 is limited by the limiting device 14. The limiting device 14 may be a self-tapping screw, a split pin or a bolt. A self-tapping screw is preferred, the self-tapping screw passes through the chamfered portion 15 of the free end 8 and taps into the horizontal slot 5, and the free end 8, that is, the open end of the vertical slot 6, is located in the fastener body 1 top side.

The steel truss of the present patent is subjected to a secondary limit by using a limit device, which fully guarantees the positioning and stability of the steel truss after it is put into the fastener body. In this patent, the horizontal clamping slot 5 and the vertical clamping slot 6 form an L-shaped structure in structure, which can limit the reinforcement bar 11 of the web bar of the steel bar truss 7 .

During installation, each group of two rows of the fastener bodies 1 are arranged in the same direction, that is, the opening directions of the circuitous grooves 4 are the same. .

The reason why the fastener body 1 is arranged in the same direction is because when the opening is in one direction, the steel bar truss can be directly slid into the circuitous groove 4 for integral installation, which is very convenient.

When the steel bar truss 7 is in place, the limiting device 14 (at this time, the limiting device 14 selects self-tapping screws). One of the self-tapping screws is located inside the horizontal straight portion, and the other is located outside the horizontal straight portion, and the horizontal straight portion 12 is fixed.

Of course, the fastener body can also be arranged in a symmetrical manner. In this embodiment, the fastener body 1 is preferably installed in the same direction.

Embodiment 2

In this embodiment, the limiting device 14 is a bolt, and the other main structures are the same as those in the first embodiment, which will not be repeated here.

As shown in FIG. 10 , the upper and lower ends of the side of the horizontal slot 5 are respectively provided with fixed lugs 16 , the fixed lugs 16 are provided with internal threads, and the bolts pass through the upper and lower two fixed lugs 16 pairs The horizontal straight portion 12 of the web bar 11 is limited.

After the horizontal straight portion 12 is in place, the fixing lugs 16 are located on the outside or inside of the horizontal straight portion 12 , and respectively fix the horizontal straight portion 12 in the horizontal slot 5 . The fixing lugs 16 can be arranged on either side of the front and rear sides of the fastener body 1 to realize the position limit of the horizontal straight portion 12 .

In other embodiments, the limiting device 14 can also be a cotter pin or a pin-and-socket bolt. When a cotter pin is used, there is no need to prepare internal threads in the corresponding fixing ears 16, and it can be a common through hole.

In the above-mentioned two embodiments, the bottom mold 2 is any one of bamboo plywood, plastic wood board, profiled stainless steel plate or glass steel plate, preferably bamboo plywood in this patent, and of course other similar templates , which is not described in detail in this patent, as long as the template that is easy to remove is within the protection scope of this patent.

Its usage is:

(1) Drill a hole at the position of the bottom mold 2 corresponding to the fastener body 1, then place the fastener body 1 on the bottom mold 2, and screw the self-tapping screw 3 into the hole by mechanical equipment or manually, so as to make the fastener The body is fixed on the bottom mold 2;

(2) Place the steel bar truss 7 in the free end 8 at the top of the fastener body 1 from top to bottom, so as to enter the vertical slot 6, and then apply downward pressure to the steel bar truss vertically, so that the steel bar truss follows the detour The path of the slot 4 is pushed into the horizontal slot 5;

(3) Use the limiting device 14 to limit the horizontal straight portion 12 of the web bar of the steel bar truss. In this patent, the self-tapping screw preferably passes through the chamfered portion 15 of the free end 8 and taps into the horizontal slot 5 , so as to limit the horizontal straight portion 12 of the web bar 11;

(4) After the concrete floor slab is poured, the self-tapping screws 3 under the bottom mold 2 can be removed, so that the bottom mold can be removed, so that the concrete surface is exposed, and the bottom mold 2 can be reused.

The fixing method of the new fastener device and the steel bar truss of the patent is simple and easy to operate, and the fastener structure is simple and reasonable, and the weight is light, which greatly saves the cost; There is no need to laterally extrude the lower chord steel bars, which simplifies the production process; moreover, the circuitous grooves on the fastener body realize more efficient, fast and precise positioning; at the same time, the bottom mold using bamboo plywood can be removed more easily Bottom mold.

The described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Claims (10)

1. A fastener device suitable for a detachable reinforced truss floor deck, characterized in that it comprises several fastener bodies (1), and two rows of the fastener bodies (1) are a set of fixed installations with uniform intervals On the bottom mold (2), drill holes respectively at the positions of the bottom mold (2) corresponding to the fastener body (1), and pass the self-tapping screws (3) through the bottom of the bottom mold (2) from bottom to top Pass through the hole of the bottom mold (2) and fix the fastener body (1) on the bottom mold (2); the fastener body (1) is provided with a circuitous groove (4) with a free end (8), The circuitous groove (4) is composed of a horizontal clamping groove (5) and a vertical clamping groove (6), and the circuitous groove (4) is used for placing the steel bar truss (7). 2. The fastener device suitable for a detachable reinforced truss floor deck according to claim 1, wherein the reinforced truss (7) comprises an upper chord steel bar (9), a lower chord steel bar (10) and a web rod Rebars (11), there are two lower chord bars (10), and the web bars (11) are used to connect the two lower chord bars (10) and the upper chord bars (9); The web bar reinforcing bar (11) is further provided with a horizontal straight portion (12) at the position in contact with the lower chord reinforcing bar (10), and both ends of the horizontal straight portion (12) are connected to the web bar through the connecting portion (13) respectively. The main body of the steel bar (11) is connected to form a hanging lug, the horizontal straight portion (12) is located in the horizontal slot (5) when the steel bar truss (7) is installed in place, and the horizontal straight portion (12) ) is parallel to the bottom chord bar (10). 3. The fastener device suitable for a detachable reinforced truss floor deck according to claim 2, wherein the horizontal straight portion (12) is located on the outer side of the lower chord steel bar (10), and is horizontally straight An installation distance is formed between the part (12) and the lower chord reinforcement (10). 4. The fastener device suitable for a detachable reinforced truss floor deck according to claim 2, characterized in that, after the reinforced truss (7) is installed in place, the web bar reinforcement is fixed by the limiting device (14). The horizontal straight portion (12) of (11) is limited. 5 . The fastener device suitable for a detachable reinforced truss floor slab according to claim 4 , wherein the limiting device ( 14 ) is a self-tapping screw or a split pin or a bolt or a pin bolt. 6 . 6. The fastener device suitable for a detachable reinforced truss floor deck according to any one of claims 1 to 4, wherein the free end (8) is the opening of the vertical slot (6) The ends are located on the top side of the fastener body (1). 7. The fastener device suitable for a detachable reinforced truss floor deck according to claim 5, wherein the limiting device (14) is a self-tapping screw, and the self-tapping screw starts from the free end ( 8) The chamfered part (15) passes through and taps into the horizontal slot (5). 8. The fastener device suitable for a detachable reinforced truss floor deck according to claim 5, wherein the limiting device (14) is a bolt, which is located on the side of the horizontal slot (5) The upper and lower ends of the steel rod are respectively provided with fixed lugs (16), and the bolts pass through the upper and lower fixed lugs (16) to limit the horizontal straight portion (12) of the web bar reinforcement (11). 9. The fastener device suitable for a detachable reinforced truss floor deck according to claim 4, characterized in that, during installation, each group of two rows of said fastener bodies (1) are arranged in the same direction, that is, The opening directions of the circuitous grooves (4) are consistent, and after the horizontal straight portion (12) is in place, the limiting device (14) fixes the horizontal straight portion (12). 10. The fastener device suitable for a detachable reinforced truss floor deck according to claim 1, wherein the bottom mold (2) is a bamboo plywood, a plastic board, a profiled stainless steel plate or a glass steel plate .

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