Demounting-free bottom die steel bar truss floor support plate

Abstract

The utility model discloses a disassembly-free bottom die steel bar truss floor support plate in the technical field of constructional engineering, which comprises a bottom plate, a plurality of groups of lower support rods in pairwise correspondence are fixedly mounted at the top of the bottom plate, and a plurality of groups of support components arranged at equal intervals are mounted between the two groups of lower support rods in a buckling manner. The top ends of the multiple sets of support assemblies are connected with the same upper supporting rod. The lower supporting rod is detachably provided with a first positioning assembly for limiting the front portion and the back portion of the support assembly, the lower supporting rod is detachably provided with a second positioning assembly for limiting the left portion and the right portion of the support assembly, and the lower supporting rod is internally provided with a plurality of clamping grooves penetrating left and right. The steel bar truss floor support plate solves the problems that when an existing steel bar truss floor support plate is assembled, components of the steel bar truss floor support plate are usually connected in a welding mode, the stability of the connecting position is poor due to the fact that cylindrical components are connected in a welding mode, and therefore the overall structural stability of the steel bar truss floor support plate is affected, and people cannot use the steel bar truss floor support plate conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a bottom formwork-free steel bar truss floor deck. Background Art

[0002] At present, a major obstacle to the development of the construction industry is the high labor cost and the gradually increasing requirements for energy conservation and environmental protection. The emergence of steel truss floor decking solves the problems of traditional on-site cast-in-place floor slabs, such as the need to build formwork and tie steel bars on site, and is easy to realize industrial production. The bottom plates of early steel truss floor decking were mostly galvanized steel plates. The process of removing the bottom formwork was time-consuming and labor-intensive, and it was easy to damage the formed bottom plate; there was also a method to avoid dismantling the galvanized steel plate, but when the truss was connected to the surface of the bottom formwork, it was easy to weld through the steel plate and cause leakage, and it caused trouble for decoration and plastering.

[0003] When assembling existing steel truss floor decking, its components are usually connected by welding. The welding connection between cylindrical components will result in poor stability of the joints, thereby affecting the overall structural stability of the steel truss floor decking, which is not conducive to people's use. Therefore, technical personnel in this field provide a steel truss floor decking that does not require dismantling of the bottom formwork to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a steel bar truss floor decking plate without dismantling the bottom formwork, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bottom formwork-free steel truss floor deck, comprising a bottom plate, a plurality of groups of two-by-two corresponding lower support rods are fixedly installed on the top of the bottom plate, a plurality of groups of equidistantly arranged bracket assemblies are buckled and installed between two groups of the lower support rods, and the top ends of the plurality of groups of the bracket assemblies are connected to the same upper support rod;

[0006] A first positioning component for limiting the front and rear positions of the bracket component can be detachably mounted on the lower support rod, and a second positioning component for limiting the left and right positions of the bracket component can also be detachably mounted on the lower support rod.

[0007] Preferably, a plurality of groups of slots extending left and right are provided inside the lower support rod, and the two bottom ends of the bracket assembly are respectively buckled and installed inside the slots of the two groups of lower support rods.

[0008] Preferably: the bracket assembly includes two groups of first horizontal sections fixedly connected to the upper support rod, both ends of the two groups of the first horizontal sections are integrally formed with oblique support sections, the bottom ends of multiple groups of the oblique support sections are integrally formed with second horizontal sections, and a connecting section is integrally formed between the ends of the two corresponding groups of the second horizontal sections.

[0009] Preferably: each group of the first positioning components includes two long screws passing through the two groups of lower support rods, and the outer sides of the two groups of lower support rods are abutted with fixing nuts threadedly connected to the ends of the long screws, and the surface of the long screws abuts against the surface of the oblique support section.

[0010] Preferably, the second positioning assembly comprises two groups of fixing bolts threadedly connected to the lower support rod, the two groups of fixing bolts pass through the slots up and down, and the surfaces of the fixing bolts abut against the surface of the connecting section.

[0011] Preferably, a welding plate connected to the first horizontal section and the oblique support section is welded to the bottom of the upper support rod, and the welding plate is welded to the surfaces of the first horizontal section and the oblique support section.

[0012] Preferably, the lower support rod has a plurality of groups of connecting grooves arranged equidistantly up and down.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, the bracket assembly is positioned on the two sets of lower support rods by using long screws, fixing nuts and fixing bolts, which can facilitate the assembly between the structures and help to improve the overall structural stability of the lifting device. The bracket assembly is connected to the upper support rod by using a welding plate, which can improve the strength of the welded connection, thereby helping to improve the overall tensile and compressive properties of the lifting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 A bottom view of the overall structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the assembly of the lower support rod, bracket assembly, upper support rod and other structures of the utility model.

[0018] In the figure: 1, bottom plate; 2, lower support rod; 3, upper support rod; 4, slot; 5, first horizontal section; 6, diagonal support section; 7, second horizontal section; 8, connecting section; 9, long screw rod; 10, fixing nut; 11, fixing bolt; 12, welding plate; 13, connecting groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 to Figure 3 In an embodiment of the utility model, a bottom formwork-free steel truss floor decking plate includes a bottom plate 1, a plurality of groups of two-way corresponding lower support rods 2 are fixedly installed on the top of the bottom plate 1, a plurality of groups of equidistantly arranged bracket assemblies are buckled and installed between the two groups of lower support rods 2, the top ends of the plurality of bracket assemblies are connected to the same upper support rod 3, a first positioning assembly for limiting the front and rear positions of the bracket assembly is detachably installed on the lower support rod 2, and a second positioning assembly for limiting the left and right positions of the bracket assembly is also detachably installed on the lower support rod 2.

[0021] When assembling the steel truss floor decking plate without disassembly of the bottom formwork, the lower support rods 2 are welded one by one or detachably installed on the bottom plate 1, and the bracket assembly is snap-fitted between the two opposite groups of lower support rods 2. Then, the bracket assembly is limited by the first positioning assembly and the second assembly. Finally, the upper support rod 3 is fixedly installed on the top of the multiple groups of bracket assemblies. The device can be quickly assembled, and the overall structural stability of the steel truss floor decking plate without disassembly of the bottom formwork is strong, and the strength of the construction connection is high.

[0022] In one embodiment, multiple groups of left and right through slots 4 are provided inside the lower support rods 2, and the two bottom ends of the bracket assembly are respectively snap-fitted into the inside of the slots 4 of the two groups of lower support rods 2, so that the bracket assembly can be snap-fitted between the two groups of lower support rods 2 for convenience.

[0023] Specifically, the bracket assembly includes two groups of first horizontal sections 5 fixedly connected to the upper support rod 3, both ends of the two groups of first horizontal sections 5 are integrally formed with diagonal support sections 6, the bottom ends of multiple groups of diagonal support sections 6 are integrally formed with second horizontal sections 7, and a connecting section 8 is integrally formed between the ends of the two corresponding second horizontal sections 7. The bracket assembly has strong overall stability and is convenient for providing the device with tensile and compressive properties.

[0024] On the basis of the above embodiment, each group of first positioning components includes two long screws 9 passing through the two groups of lower support rods 2. The outer sides of the two groups of lower support rods 2 are abutted with fixing nuts 10 threadedly connected to the ends of the long screws 9. The surfaces of the long screws 9 abut against the surfaces of the diagonal support sections 6. The long screws 9 are passed through the two groups of lower support rods 2 and then fastened to the lower support rods 2 using two groups of fixing nuts 10. This can provide stable lateral support and limitation for the bracket assembly and improve the tensile performance of the left and right sides of the overall bracket.

[0025] Specifically, the second positioning assembly includes two groups of fixing bolts 11 threadedly connected on the lower support rod 2. Both groups of fixing bolts 11 pass through the slot 4 from top to bottom. The surface of the fixing bolts 11 abuts against the surface of the connecting section 8. The fixing bolts 11 are fixedly installed inside the lower cross bar 2, so as to position the left and right sides of the bracket assembly.

[0026] The bottom of the upper support rod 3 is welded with a welding plate 12 connected to the first horizontal section 5 and the diagonal support section 6. The welding plate 12 is welded to the surface of the first horizontal section 5 and the diagonal support section 6, which can increase the welding length between the bracket assembly and the welding plate 12, thereby increasing the connection strength of the upper support rod 3. The interior of the lower support rod 2 is provided with multiple groups of connecting grooves 13 arranged equidistantly up and down, which will reduce the manufacturing materials of the lower support rod, reduce its own weight and help to increase the manufacturing cost. The connecting grooves 13 are also convenient for bolts to pass through, so that the lower support rod 2 and the base plate 1 can be detachably connected by using the connecting grooves 13.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bottom formwork-free steel truss floor deck, comprising a bottom plate (1), characterized in that: A plurality of groups of lower support rods (2) corresponding to each other are fixedly mounted on the top of the bottom plate (1), a plurality of groups of bracket assemblies arranged at equal distances are buckled and mounted between two groups of the lower support rods (2), and the top ends of the plurality of groups of bracket assemblies are connected to the same upper support rod (3); A first positioning component for limiting the front and rear positions of the bracket assembly is detachably mounted on the lower support rod (2), and a second positioning component for limiting the left and right positions of the bracket assembly is also detachably mounted on the lower support rod (2).

2. The bottom formwork-free steel truss floor deck according to claim 1 is characterized in that: The lower support rod (2) has a plurality of groups of slots (4) extending therethrough from left to right, and the two bottom ends of the bracket assembly are respectively snap-fitted into the slots (4) of the two groups of lower support rods (2).

3. The bottom formwork-free steel truss floor deck according to claim 2 is characterized in that: The support assembly comprises two groups of first horizontal sections (5) fixedly connected to the upper support rod (3), both ends of the two groups of the first horizontal sections (5) are integrally formed with oblique support sections (6), the bottom ends of the plurality of groups of the oblique support sections (6) are integrally formed with second horizontal sections (7), and a connecting section (8) is integrally formed between the ends of the two corresponding groups of the second horizontal sections (7).

4. The bottom formwork-free steel truss floor deck according to claim 3 is characterized in that: Each group of the first positioning components comprises two long screws (9) penetrating the two groups of lower support rods (2), and the outer sides of the two groups of lower support rods (2) are abutted with fixing nuts (10) threadedly connected to the ends of the long screws (9), and the surfaces of the long screws (9) abut against the surfaces of the oblique support sections (6).

5. The bottom formwork-free steel truss floor deck according to claim 3 is characterized in that: The second positioning assembly comprises two groups of fixing bolts (11) threadedly connected to the lower support rod (2), the two groups of fixing bolts (11) both pass through the slots (4) from top to bottom, and the surfaces of the fixing bolts (11) abut against the surface of the connecting section (8).

6. The bottom formwork-free steel truss floor deck according to claim 3 is characterized in that: A welding plate (12) connected to the first horizontal section (5) and the diagonal support section (6) is welded to the bottom of the upper support rod (3); the welding plate (12) is welded to the surfaces of the first horizontal section (5) and the diagonal support section (6).

7. The bottom formwork-free steel truss floor deck according to claim 1 is characterized in that: The lower support rod (2) has a plurality of groups of communicating grooves (13) arranged equidistantly in the upper and lower parts.

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