CN209538526U - Anchor-type snap-fit device for prefabricated steel truss floor slab - Google Patents

Abstract

The utility model discloses a kind of anchor bolt type bayonet units in type steel bar truss floor support plate, it includes buckle ontology, the buckle ontology is equipped with interconnecting piece and the fixed part positioned at interconnecting piece two sides, the interconnecting piece and fixed part are arranged towards floor support plate bottom, and mounting groove is each formed between the interconnecting piece and fixed part, screw hole is equipped in the interconnecting piece, the installation of the utility model need to only correspond to buckle ontology and drill through corresponding through-hole on end template, draw one ensures through-hole point-blank with reference to straight line, and it does not need through-hole to drill through in strict accordance with design position, the buckle ontology that can be moved forward and backward at any time in installation process on steel bar girder, so that the screw hole on buckle ontology is corresponding with the through-hole on end template identical, so the utility model have the advantages that it is easy for installation and fireballing.

Description

Anchor-type snap-fit device for prefabricated steel truss floor slab

technical field

The utility model relates to the technical field of a connecting device used for a steel bar truss and a bottom formwork in an assembled steel bar truss floor deck.

Background technique

Reinforced truss floor deck is a newly developed building material in recent years, and has been widely used in the construction of various steel structure buildings and municipal (roads, bridges). At present, the production of reinforced truss floor deck is to first weld three specifications (upper chord, lower chord and web member) of the steel bar combination (web member including bending) into a reinforced truss. The formwork can be disassembled to achieve the purpose of reusing the bottom formwork and reducing the construction cost, and after removing the bottom formwork, the concrete floor can be directly used for decoration after general painting treatment. The existing steel truss floor deck The steel bar truss and the bottom formwork are combined and welded into one body without resistance spot welding. Instead, by arranging a snap device, the steel bar truss is fixedly connected to the bottom formwork through the snap device, and the snap device and the bottom formwork are detachably connected.

For example, the prior patent with the patent application number of CN201720776277.2 discloses a hanger hanger for a floor deck truss. The hanger hanger body is provided with a screw hole and a slot, and the hanger hanger body is fixed on the bottom formwork by screws. On the top, the screws are matched with the screw holes, and the truss and the slot are clamped together. Compared with directly welding the bottom formwork to the steel truss, the bottom formwork is clamped on the truss by the hanger hanger, and the subsequent removal of the bottom formwork is convenient, and, The bottom formwork will not be damaged during the dismantling process, which is beneficial to the subsequent use of the bottom formwork.

However, the existing buckle device has the defects of extremely inconvenient installation and slow speed. During the installation process, the buckle hanger needs to be locked on the bottom template with screws. During the locking process, the two clips must be strictly guaranteed The spacing between the grooves is to ensure that the spacing is the same as the spacing between the two lower chords in the reinforced truss, and it must be strictly ensured that the clamping grooves on the adjacent hanger hangers are on the same central axis and are in phase with the two lower chords in the reinforced truss. Correspondingly, it is necessary to drill two screw holes on the bottom formwork and install two hanger hangers.

In view of this, the designer has deeply conceived and actively researched and improved the trial implementation for the many defects and inconveniences caused by the imperfect structural design of the anchor-type snap device used in the prefabricated steel truss floor deck. The utility model is developed and designed.

Utility model content

The purpose of the utility model is to provide an anchor bolt-type snap-fastening device used in a prefabricated steel truss floor deck with convenient installation and high speed.

In order to achieve the above-mentioned purpose, the solution of the present utility model is:

An anchor bolt-type snap device used in a prefabricated steel truss floor deck comprises a snap body, the snap body is provided with a connecting portion and a fixing portion located on both sides of the connecting portion, the connecting portion And the fixing part is arranged towards the bottom of the floor slab, and an installation groove is formed between the connecting part and the fixing part, and the connecting part is provided with a screw hole.

An extension groove is provided at one end of the installation groove facing the fixing part, and the fixing part forms a hook under the extension groove.

The lower end surface of the hook is higher than the lower end surface of the connecting portion.

After adopting the above solution, the present invention is provided with a connecting part and a fixing part located on both sides of the connecting part, the connecting part and the fixing part are both arranged towards the bottom of the floor deck, and the connecting part and the fixing part are formed between the connecting part and the fixing part. There are installation grooves. In the installation process of the utility model, several snap bodies are firstly installed on the steel truss at a certain distance, wherein the installation grooves between the connecting part and the fixed part are respectively matched with the two lower chords in the steel truss. Then, according to the installation spacing of the clip body, drill a number of through holes in a straight line on the bottom formwork, and then place the steel truss with the clip body on the bottom formwork, and the screws on each connection part The holes are aligned and matched with the through holes on the bottom formwork, and finally use screws to pass through the through holes and screw the screw holes, so as to lock the buckle body on the bottom formwork. The installation of the present invention only needs to correspond to the buckle body on the bottom Drill the corresponding through holes on the template, and draw a reference line to ensure that the through holes are in a straight line, and the through holes do not need to be drilled strictly according to the design position. During the installation process, you can move the buckle body on the steel truss at any time. , so that the screw holes on the buckle body correspond to the through holes on the bottom template, so the utility model has the advantages of convenient installation and high speed.

In addition, in the present invention, by arranging the lower end face of the hook above the lower end face of the connecting portion, when the concrete is poured, the fine sand and gravel in the concrete can enter the installation groove from the lower part of the hook, not only in the concrete The cement slurry enters the installation groove, which makes the floor deck after pouring more stable, and also avoids the contact between the lower end surface of the fixed part and the bottom formwork, which leads to the defect that the fixed part is exposed after the bottom formwork is removed. The utility model Only the place where the connection part is in contact with the bottom formwork will be exposed after the bottom formwork is removed, and the grout needs to be brushed after the bottom formwork is removed, which greatly reduces the amount of work for brushing the grout after the bottom formwork is removed.

Description of drawings

Fig. 1 is the structural representation of the preferred embodiment of the present utility model;

2 is a cross-sectional view of a preferred embodiment of the present utility model;

3 is a schematic structural diagram of a preferred embodiment of the present utility model installed on a steel truss;

FIG. 4 is a schematic structural diagram of the preferred embodiment of the present utility model after the installation is completed and concrete is poured.

Detailed ways

In order to further explain the technical solutions of the present utility model, the present utility model will be described in detail below through specific embodiments.

As shown in Figures 1 to 4, it is a preferred embodiment of the buckle device used in the second floor deck of the assembled steel truss according to the present invention, which comprises a buckle body 1, and the buckle body 1 is provided with The connecting portion 11 and the fixing portions 12 located on both sides of the connecting portion 11 are both disposed toward the bottom of the floor deck, and an installation groove 13 is formed between the connecting portion 11 and the fixing portion 12, so The connecting portion 11 is provided with a screw hole 111 therein.

In the installation process of the present invention, several snap bodies 1 are firstly installed on the steel truss 2 at certain intervals, wherein the installation grooves 13 between the connecting part 11 and the fixing part 12 are respectively connected with the two lower chords in the steel truss 2 21 with the snap connection, and then according to the installation spacing of the snap body 1, drill a number of through holes 31 on a straight line on the bottom formwork 3, and then place the steel truss 2 with the snap body 1 installed on the bottom formwork 3. , and the screw holes 111 on each connecting part 11 are aligned with the through holes 31 on the bottom template 3, and finally the screws 4 are used to pass through the through holes 31 and screw holes 111 for screwing, so as to lock the snap body 1 in the bottom template 3. The installation of the present invention only needs to drill the corresponding through holes 31 on the bottom template 3 corresponding to the buckle body 1, and draw a reference line to ensure that the through holes 31 are on a straight line, and the through holes 31 are not required to be strictly designed according to the design. The position is drilled, and the buckle body 1 on the steel bar truss 2 can be moved back and forth at any time during the installation process, so that the screw holes 111 on the buckle body 1 correspond to the through holes 31 on the bottom formwork 3, so the utility model has the advantages of convenient installation. And the advantage of fast speed.

An extension groove 131 is provided at one end of the installation groove 13 facing the fixing portion 12 , and the fixing portion 12 forms a hook 121 below the extension groove 131 . The extension groove 131 and the hook 121 are provided so that the hook 121 of the buckle body 1 can hold up the steel bar truss 2 to avoid contact between the steel bar truss 2 and the bottom formwork 3, resulting in the defect of exposed steel bars after the bottom formwork 3 is removed.

The lower end surface of the hook 121 is higher than the lower end surface of the connecting portion 11 . By arranging the lower end surface of the hook 121 above the lower end surface of the connecting portion 11 , when the concrete is poured, the fine sand and gravel in the concrete can enter the installation groove 13 from the lower part of the hook 121 , not only in the concrete The cement slurry enters the installation groove 13, which makes the floor deck after pouring more stable, and also avoids the contact between the lower end surface of the fixed part 12 and the bottom formwork 3, which leads to the defect that the fixed part 12 is exposed after the bottom formwork 3 is removed. In the present invention, only the place where the connecting portion 11 is in contact with the bottom formwork 3 will be exposed after the bottom formwork 3 is removed, and the cement slurry needs to be brushed after the bottom formwork 3 is removed, which greatly reduces the need for brushing cement slurry after the bottom formwork 3 is removed amount of engineering.

The above-mentioned buckle body 1 is provided with a sinking groove 14 . By providing the sinking groove 14, the molding volume of the buckle device is reduced, and the raw materials required for the production of the buckle device are correspondingly reduced, thereby reducing the production cost of the buckle device. It has the advantage of light weight. At the same time, because the thickness of the buckle body 1 is thick, due to the internal stress during the injection molding process, injection shrinkage holes will be generated in the buckle body 1, which will affect the quality of the buckle body 1. The sinking groove 14 is provided, which can eliminate the internal stress in the buckle body 1 during the injection molding process and improve the quality of the buckle body 1 .

The above-mentioned embodiments and drawings do not limit the product form and style of the present invention, and any appropriate changes or modifications made by those of ordinary skill in the technical field should be regarded as not departing from the scope of the present invention.

Claims (4)

1. An anchor bolt-type buckle device for use in an assembled steel truss floor deck is characterized in that: it comprises a buckle body, and the buckle body is provided with a connecting part and a fixing device on both sides of the connecting part. The connecting part and the fixing part are arranged toward the bottom of the floor slab, and a mounting groove is formed between the connecting part and the fixing part, and the connecting part is provided with a screw hole. 2 . The anchor-type snap-fitting device used in the prefabricated steel truss floor slab according to claim 1 , wherein an extension groove is provided at one end of the installation groove facing the fixing portion, and the fixing portion is located at the end of the fixing portion. 3 . A hook is formed under the extension groove. 3 . The anchor-type snap-fitting device used in the prefabricated steel truss floor deck according to claim 2 , wherein the lower end surface of the hook is higher than the lower end surface of the connecting portion. 4 . 4 . The anchor-type snap-fitting device used in the prefabricated steel truss floor deck according to claim 1 , wherein the snap-fit body is provided with a sinking groove. 5 .