Concrete bottom die steel bar truss floor support plate

Abstract

The utility model discloses a concrete bottom die steel bar truss floor support plate which comprises a concrete bottom die, and corresponding slopes are arranged on the two sides of the concrete bottom die in an inclined and inward mode respectively. The steel bar truss is installed on the upper portion of the concrete bottom die in an embedded mode, and the top of the steel bar truss extends to the upper side of the concrete bottom die; one side face of each forming rubber strip is arranged to be in an inclined plane shape matched with the two sides of the concrete bottom die, the other side face of each forming rubber strip is arranged to be in a vertical plane shape or outwards inclined, and one side of the inclined plane of each forming rubber strip is connected to the slope of the concrete bottom die in an attached mode; and the connecting mechanism is used for detachably fixing the forming rubber strip to the slope of the concrete bottom die. According to the utility model, the demoulding is convenient, and the splicing operation can be effectively, quickly and conveniently carried out; and subsequent concrete pouring construction can be conveniently carried out, and the seam filling work amount of the floor slab structure after construction is completed is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building floor slab components, in particular to a concrete bottom formwork steel bar truss floor deck. Background Art

[0002] Traditional floor structures primarily consist of a concrete slab and a pre-embedded steel skeleton. During construction, formwork is first erected, and then rolled steel bars are tied and arranged on the formwork according to the design to form the steel skeleton. Concrete is then poured, and the formwork is removed once the concrete has solidified to the design strength. This results in high labor costs and low efficiency.

[0003] For this reason, prefabricated floor structures began to be put into use. With the continuous improvement of the construction technology of prefabricated floor structures, the existing prefabricated floor structures began to use steel truss floor decking with concrete as the bottom formwork as the basis, and then further concrete was poured on the concrete bottom formwork of the steel truss floor decking. By completing the production of steel truss floor decking with concrete as the bottom formwork in the factory, only simple lifting, splicing and a small amount of concrete pouring are required on site to complete the construction of the floor structure, thereby greatly shortening the construction period, reducing costs and improving construction efficiency. Since the concrete bottom formwork of the steel truss floor decking needs to be easily demolded during the pouring process in the factory, the two sides of the concrete bottom formwork of the steel truss floor decking are generally set in a vertical plane or an outward inclined plane.

[0004] When the two sides of the concrete bottom formwork of the steel truss floor decking are set in the shape of vertical surfaces, since its end faces cannot be completely flat, the splicing between the concrete bottom formworks of two adjacent steel truss floor deckings is relatively difficult. In many cases, the end faces of the concrete bottom formworks of the steel truss floor deckings need to be smoothed, which is very troublesome. If the two sides of the concrete bottom formwork of the steel truss floor deckings are set in the shape of outward inclined surfaces, the demoulding and splicing operations are relatively easier. However, after the two adjacent steel truss floor deckings are spliced, there will be inverted V-shaped splicing grooves on their bottom surfaces. After the construction is completed and the formwork is removed, the corresponding splicing grooves need to be repaired, which is very troublesome.

[0005] Therefore, the research purpose of this utility model is to design a concrete bottom formwork steel truss floor deck that is easy to demould, can effectively, quickly and conveniently perform splicing operations, can facilitate the subsequent concrete pouring construction, and effectively and significantly reduce the amount of repair work on the floor structure after construction is completed. Summary of the Invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a concrete bottom formwork steel bar truss floor deck, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the utility model is:

[0008] A concrete bottom formwork steel bar truss floor deck, comprising:

[0009] A concrete bottom formwork, wherein both sides of the concrete bottom formwork are respectively inclined inwardly and provided with corresponding slopes;

[0010] A steel bar truss is pre-buried and installed on the upper part of the concrete bottom formwork, and the top of the steel bar truss extends to the upper side of the concrete bottom formwork;

[0011] A group of forming strips, one side of each forming strip being configured to be inclined to match the two sides of the concrete bottom form, and the other side being configured to be vertical or inclined outward, wherein the inclined sides of each forming strip are respectively connected to the slopes of the concrete bottom form;

[0012] The connecting mechanism is used to detachably fix the forming rubber strip on the slope of the concrete bottom form.

[0013] The molded rubber strip is provided with a plurality of corresponding through holes arranged side by side, and the connection mechanism includes a rubber tube connected to the molded rubber strip at the inner end of the through hole, and corresponding fixing rods are respectively inserted into the rubber tubes; after the fixing rods are driven outward to move until the inner end thereof leaves the rubber tube, the molded rubber strip is removed.

[0014] The inner end portion of the fixing rod is connected to the rubber tube by a threaded connection.

[0015] The outer end of the fixing rod is provided with a corresponding hexagonal slot, and the fixing rod is rotated by a corresponding hexagonal wrench to drive the fixing rod to leave the rubber tube.

[0016] The rubber tube is integrally formed and connected to the molded rubber strip, and the diameter of the rubber tube decreases outward along the connection between the rubber tube and the molded rubber strip.

[0017] The top surface of the molded rubber strip is provided with a plurality of inclined pulling holes at intervals, and the molded rubber strip can be removed by cooperating a pull rod provided with a hook with the inclined pulling holes.

[0018] The steel truss includes several supporting steel bars arranged side by side, and the supporting steel bars are arranged in an inverted V shape. The bottom of the supporting steel bars is pre-embedded and installed on the upper part of the concrete bottom formwork, and corresponding connecting steel bars are fixed to the two sides and tops of several of the supporting steel bars.

[0019] Between two adjacent support steel bars in the same row of support steel bars, one is arranged to be tilted forward and the other is arranged to be tilted backward.

[0020] Advantages of this utility model:

[0021] 1) The present invention first uses forming strips. During the pouring process, a group of forming strips can be pre-fixed on both sides of the forming mold. Then, the concrete bottom mold is poured, and the steel truss is installed in place. Since the connecting side of the forming strips and the forming mold is arranged in a vertical plane or tilted outward, the demoulding operation can be carried out directly after the concrete bottom mold solidifies, thereby facilitating the overall demoulding operation of the present invention.

[0022] 2) After demoulding, a group of molding strips are stably fixed on the slope of the concrete bottom form under the action of the connection mechanism, so that the molding strips can effectively form a buffer support on both sides of the concrete bottom form to ensure that it does not cause excessive bumps and other problems during transportation, lifting and splicing.

[0023] 3) After a set of formed rubber strips are removed from the concrete bottom formwork, the two adjacent concrete bottom formwork steel truss floor decks can be quickly spliced ​​together, and an upward V-shaped groove can be formed between the concrete bottom formworks of the two concrete bottom formwork steel truss floor decks after splicing, which can not only facilitate the splicing operation of the utility model, but also facilitate the subsequent concrete pouring construction, and effectively and significantly reduce the amount of seam repair work of the floor structure after the construction is completed.

[0024] 4) The connection mechanism of the present invention includes a rubber tube connected to the molded rubber strip at the inner end of the through hole, and corresponding fixing rods are respectively inserted into the rubber tube, which provides support for the rubber tube. After the concrete bottom mold is poured, the rubber tube is fixed and embedded in the concrete bottom mold, thereby effectively and stably fixing the molded rubber strip on both sides of the concrete bottom mold after demolding; after the inner end of the fixing rod leaves the rubber tube, the rubber tube is set in a hollow state. In addition, it is itself a flexible and deformable material piece. In this way, the rubber tube can be simultaneously torn off the concrete bottom mold during the disassembly process of the molded rubber strip, thereby ensuring the practical effect of the present invention.

[0025] 5) In the present invention, two adjacent support steel bars in the same row of support steel bars are arranged with one inclined forward and the other inclined backward, so as to improve the bonding between the support steel bars and the subsequently poured concrete cover layer, thereby improving the overall structural stability of the floor slab after pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the present utility model.

[0027] Figure 2 This is a schematic diagram of the structure of the utility model after the molded rubber strip is detached.

[0028] Figure 3 It is a cross-sectional view of the present utility model.

[0029] Figure 4 This is a diagram of the assembly and use status of the utility model.

[0030] In the accompanying drawings: concrete bottom formwork 1, steel bar truss 2, supporting steel bars 201, connecting steel bars 202, forming rubber strips 3, through holes 301, connecting mechanism 4, rubber tube 401, fixing rod 402, pulling hole 5. DETAILED DESCRIPTION

[0031] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the following embodiments and accompanying drawings:

[0032] refer to Figure 1-4 , a concrete bottom formwork steel bar truss floor deck, comprising:

[0033] A concrete bottom form 1, wherein both sides of the concrete bottom form 1 are respectively inclined inwardly and provided with corresponding slopes;

[0034] A steel truss 2 is pre-buried and installed on the upper part of the concrete bottom form 1, and the top of the steel truss 2 extends to the upper side of the concrete bottom form 1;

[0035] A group of forming strips 3, one side of each forming strip 3 is configured to be inclined and adapted to the two sides of the concrete bottom form 1, and the other side is configured to be vertical, and one side of the inclined surface of each group of forming strips 3 is respectively connected to the slope of the concrete bottom form 1;

[0036] The connecting mechanism 4 is used to detachably fix the forming strip 3 on the slope of the concrete bottom mold 1.

[0037] The present invention first utilizes the molding strips 3. During the pouring process, a set of molding strips 3 can be pre-fixed on both sides of the forming mold. Then, pouring is performed on the concrete base mold 1, and the steel trusses 2 are installed in place. Because the molding strips 3 and the connecting side of the forming mold are arranged in a vertical plane, the demoulding operation can be carried out directly after the concrete base mold 1 solidifies, thereby facilitating the overall demoulding operation of the present invention. After demoulding, the set of molding strips 3 are stably fixed to the slope of the concrete base mold 1 by the action of the connecting mechanism 4, so that the molding strips 3 can effectively form a buffer support on both sides of the concrete base mold 1, ensuring that it does not cause excessive bumps and other problems during transportation, lifting, and splicing.

[0038] After a group of forming strips 3 are detached from the concrete bottom formwork 1, the two adjacent concrete bottom formwork steel truss floor decking plates can be quickly spliced ​​together, and an upward V-shaped groove can be formed between the concrete bottom formworks 1 of the two concrete bottom formwork steel truss floor decking plates after splicing, which can not only facilitate the splicing operation of the utility model, but also facilitate the subsequent concrete pouring construction, and effectively and significantly reduce the amount of repairing work of the floor structure after the construction is completed.

[0039] The molded rubber strip 3 is provided with a plurality of corresponding through-holes 301 arranged side by side. The connection mechanism 4 includes a rubber tube 401 connected to the molded rubber strip 3 at the inner ends of the through-holes 301. Corresponding fixing rods 402 are inserted into each of the rubber tubes 401. The molded rubber strip 3 is removed by driving the fixing rods 402 outward until their inner ends are free of the rubber tubes 401. The inner ends of the fixing rods 402 are connected to the rubber tubes 401 via a threaded connection. The outer ends of the fixing rods 402 are provided with corresponding hexagonal sockets, which can be rotated with a corresponding hexagonal wrench to drive the fixing rods 402 out of the rubber tube 401.

[0040] The fixing rod 402 is used to provide support for the rubber tube 401. After the concrete base mold 1 is poured, the rubber tube 401 is fixedly embedded in the concrete base mold 1, thereby effectively and stably fixing the molded rubber strip 3 on both sides of the concrete base mold 1 after demolding; after the inner end of the fixing rod 402 leaves the rubber tube 401, the rubber tube 401 is set in a hollow state. In addition, it is itself a flexible and deformable material piece. In this way, the rubber tube 401 can be torn off the concrete base mold 1 simultaneously during the disassembly process of the molded rubber strip 3, thereby ensuring the practical effect of the present invention.

[0041] The rubber tube 401 is integrally connected to the molded rubber strip 3, and its diameter decreases outward from the junction of the rubber tube 401 and the molded rubber strip 3. The top surface of the molded rubber strip 3 is provided with a plurality of inclined removal holes 5 at intervals. The molded rubber strip 3 is removed by engaging a pull rod equipped with a hook with these inclined removal holes 5.

[0042] The steel truss 2 comprises several parallel supporting bars 201 arranged in an inverted V shape. The bottoms of the supporting bars 201 are pre-embedded in the upper portion of the concrete base form 1. Corresponding connecting bars 202 are fixed to the sides and tops of several supporting bars 201. Adjacent supporting bars 201 in the same row are tilted forward and backward, respectively, to enhance the bond between the supporting bars 201 and the subsequently poured concrete cover, thereby improving the overall structural stability of the poured floor slab.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A concrete bottom formwork steel bar truss floor deck, characterized in that: include: A concrete bottom form (1), wherein both sides of the concrete bottom form (1) are respectively provided with corresponding slopes inclined inwards; A steel truss (2) is pre-embedded and installed on the upper part of the concrete bottom form (1), and the top of the steel truss (2) extends to the upper side of the concrete bottom form (1); A group of molding strips (3), wherein one side of the molding strips (3) is arranged in an inclined shape that matches the two sides of the concrete bottom mold (1), and the other side is arranged in a vertical plane shape or inclined outward, and one side of the inclined surface of the group of molding strips (3) is respectively connected to the slope of the concrete bottom mold (1); The connecting mechanism (4) is used to detachably fix the forming rubber strip (3) to the slope of the concrete bottom mold (1).

2. The concrete bottom form steel bar truss floor deck according to claim 1, characterized in that: The molded rubber strip (3) is provided with a plurality of corresponding through holes (301) arranged side by side. The connecting mechanism (4) comprises a rubber tube (401) on the molded rubber strip (3) connected to the inner end of the through hole (301). Corresponding fixing rods (402) are respectively inserted into the rubber tube (401). After the fixing rods (402) are driven to move outward until their inner ends leave the rubber tube (401), the molded rubber strip (3) is removed.

3. The concrete bottom formwork steel bar truss floor deck according to claim 2, characterized in that: The inner end of the fixing rod (402) is connected to the rubber tube (401) by means of a threaded connection.

4. The concrete bottom form steel bar truss floor deck according to claim 3, characterized in that: The outer end of the fixing rod (402) is provided with a corresponding hexagonal slot, and the fixing rod (402) is rotated by a corresponding hexagonal wrench to drive the fixing rod (402) away from the rubber tube (401).

5. The concrete bottom form steel bar truss floor deck according to claim 4, characterized in that: The rubber tube (401) is integrally formed and connected to the molded rubber strip (3), and the diameter of the rubber tube (401) is arranged to decrease outwards along the connection between the rubber tube (401) and the molded rubber strip (3).

6. The concrete bottom form steel bar truss floor deck according to claim 1, characterized in that: The top surface of the molded rubber strip (3) is provided with a plurality of inclined pulling holes (5) at intervals, and the molded rubber strip (3) is disassembled by cooperating a pull rod provided with a hook with the inclined pulling holes (5).

7. The concrete bottom form steel bar truss floor deck according to claim 1, characterized in that: The steel bar truss (2) comprises a plurality of supporting steel bars (201) arranged side by side, wherein the supporting steel bars (201) are arranged in an inverted V shape, and the bottom of the supporting steel bars (201) is pre-embedded and installed on the upper part of the concrete bottom formwork (1), and corresponding connecting steel bars (202) are respectively fixed to both sides and the top of the plurality of supporting steel bars (201).

8. The concrete bottom form steel bar truss floor deck according to claim 7, characterized in that: Between two adjacent support steel bars (201) in the same row of support steel bars (201), one is arranged to be tilted forward, and the other is arranged to be tilted backward.

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