Hidden type connecting device for steel structure building

Abstract

The utility model discloses a hidden type connecting device for a steel structure building, which comprises main section steel and side section steel, the side section steel is arranged on the two sides of the main section steel, the side surface of the main section steel is provided with a side groove, the upper surface of the side section steel is provided with a limiting groove, and an expansion plate is arranged between a fixing groove and the limiting groove. During installation operation, the side section steel is placed on the side surface of the main section steel, then the expansion plates are placed between the side grooves and the limiting grooves, the fixing plate is placed between the two expansion plates, the expansion plates are expanded outwards and clamped into the side grooves and the limiting grooves, friction bond stress is generated, the fixing effect is achieved, then screws are used for further fixing, and the fixing effect is achieved. The fixing plate is simple in structure and convenient to operate, the screws of the fixing plate cannot protrude out of the profile steel, and therefore the defect that secondary decoration is difficult is overcome, and the fixing plate has high practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure buildings, in particular to a concealed connection device for steel structure buildings. Background Art

[0002] Steel structure buildings are a new type of building system. Compared with traditional concrete buildings, steel plates or steel sections are used to replace reinforced concrete in steel structure buildings, which have higher strength and better seismic resistance. And since components can be fabricated in factories and installed on site, the construction period is greatly reduced. Since steel can be reused, construction waste can be greatly reduced, making it more environmentally friendly, so it is widely used.

[0003] The existing technology has the following problems:

[0004] Most existing steel structure buildings use hook bolts for fixed connection, which makes the hook bolts protrude from the steel structure, thus causing difficulties in secondary decoration.

[0005] Therefore, we propose a concealed connection device for steel structure buildings to solve the above drawbacks. Content of the Utility Model

[0006] The purpose of the utility model is to solve the shortcomings in the existing technology that most existing steel structure buildings use hook bolts for fixed connection, which makes the hook bolts protrude from the steel structure, thus causing difficulties in secondary decoration, and to propose a concealed connection device for steel structure buildings.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A concealed connection device for steel structure buildings includes a main steel section and side steel sections. The side steel sections are arranged on both sides of the main steel section. A side groove is formed on the side surface of the main steel section, and a limiting groove is formed on the upper surface of the side steel section. An expansion plate is arranged between the fixed groove and the limiting groove. One side of the expansion plate is provided with a fixing plate, and installation lugs are arranged on both sides of the fixing plate. Screws are arranged at the installation lugs, and the screws are connected to the main steel section.

[0009] Preferably, an installation groove for cooperating with the installation lugs is formed on the side surface of the main steel section, and a threaded hole is formed at the installation groove.

[0010] Preferably, there are two expansion plates, and the two expansion plates are of an integral structure.

[0011] Preferably, the inner side surface of the expansion plate is of an arc surface structure.

[0012] Preferably, the expansion plate is made of alloy steel.

[0013] Preferably, the fixed plate and the installation lifting lug are integrally formed by welding.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows;

[0015] (1) In the present utility model, by providing the main steel section, side steel section, side groove, limiting groove, expansion plate, fixed plate, installation lifting lug and screw, during the installation operation, the side steel section is placed on the side surface of the main steel section, then the expansion plate is placed between the side groove and the limiting groove, and the fixed plate is placed between the two expansion plates, so that the expansion plates expand outwards and are clamped into the side groove and the limiting groove, generating a frictional grip force to achieve the fixing effect. Then, the screw is used for further fixing, which is convenient for the fixed plate to fall off. The structure of the present utility model is simple and the operation is convenient. Its screw will not protrude from the steel section, thus avoiding the disadvantage of causing difficulties in secondary decoration, and it has strong practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments.

[0017] Figure 1 FIG. 1 is a schematic structural diagram of a concealed connection device for a steel structure building proposed by the present utility model;

[0018] Figure 2 FIG. 2 is a schematic side view structural diagram of a concealed connection device for a steel structure building proposed by the present utility model;

[0019] Figure 3 FIG. 3 is a schematic structural diagram of part A of a concealed connection device for a steel structure building proposed by the present utility model.

[0020] Legend:

[0021] 1. Main steel section; 2. Side steel section; 3. Limiting groove; 4. Side groove; 5. Expansion plate; 6. Fixed plate; 7. Installation lifting lug; 8. Screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following will further describe the present utility model in detail in conjunction with the specific embodiments and with reference to the drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0023] Please refer to Figures 1-3, A concealed connection device for steel structure buildings, including a main steel section 1 and side steel sections 2. Side steel sections 2 are arranged on both sides of the main steel section 1. Side grooves 4 are provided on the side surfaces of the main steel section 1, and limit grooves 3 are provided on the upper surfaces of the side steel sections 2. An expansion plate 5 is arranged between the fixed groove and the limit groove 3. One side of the expansion plate 5 is provided with a fixed plate 6. Installation lugs 7 are provided on both sides of the fixed plate 6. Screws 8 are provided at the installation lugs 7, and the screws 8 are connected to the main steel section 1.

[0024] In this implementation: During the installation operation, place the side steel section 2 on the side surface of the main steel section 1. Then place the expansion plate 5 between the side groove 4 and the limit groove 3, and place the fixed plate 6 between the two expansion plates 5, so that the expansion plate 5 expands outwards and is clamped into the side groove 4 and the limit groove 3, generating a frictional grip force to achieve the fixing effect. Then use the screws 8 for further fixation, which is convenient for the fixed plate 6 to fall off. The structure of this utility model is simple and the operation is convenient. Its screws 8 will not protrude from the steel section, thus avoiding the drawback of causing difficulties in secondary decoration and having strong practicability.

[0025] Specifically, installation grooves for cooperating with the installation lugs 7 are provided on the side surface of the main steel section 1, and threaded holes are provided at the installation grooves.

[0026] In this implementation: During the installation process, the installation lugs 7 can be embedded in the installation grooves, so as to achieve the purpose of concealed installation.

[0027] Specifically, two expansion plates 5 are provided, and the two expansion plates 5 are of an integral structure.

[0028] In this implementation: They are fixedly connected, which is convenient for subsequent carrying and installation.

[0029] Specifically, the inner side surface of the expansion plate 5 is of an arc-shaped structure.

[0030] In this implementation: So as to subsequently promote expansion to generate a frictional grip force to achieve the fixing effect.

[0031] Specifically, the expansion plate 5 is made of alloy steel.

[0032] In this implementation: It has high mechanical strength and is not easily damaged.

[0033] Specifically, the fixed plate 6 and the installation lugs 7 are of a fusion-welded integral structure.

[0034] In this implementation: The fusion welding has strong strength and is not easily damaged or separated.

[0035] Working principle: During the installation operation, place the side steel 2 on the side surface of the main steel 1. Then, place the expansion plate 5 between the side groove 4 and the limiting groove 3, and place the fixing plate 6 between the two expansion plates 5, so that the expansion plates 5 expand outwards and are clamped into the side groove 4 and the limiting groove 3, generating a frictional grip force to achieve the fixing effect. Then, use the screw 8 for further fixation, which is convenient for the fixing plate 6 to fall off. The structure of the present utility model is simple and easy to operate. Its screw 8 will not protrude from the steel, thus avoiding the drawback of causing difficulties in secondary decoration, and has strong practicability.

[0036] It should be understood that the above specific embodiments of the present utility model are only used for exemplary illustration or explanation of the principle of the present utility model, and do not constitute a limitation to the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present utility model shall be included within the protection scope of the present utility model. In addition, the appended claims of the present utility model are intended to cover all variations and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A concealed connection device for a steel structure building, comprising a main steel section (1) and a side steel section (2), characterized in that: Side profile steels (2) are arranged on both sides of the main profile steel (1), side grooves (4) are provided on the side surfaces of the main profile steel (1), limiting grooves (3) are provided on the upper surfaces of the side profile steel (2), expansion plates (5) are arranged between the fixing grooves and the limiting grooves (3), a fixing plate (6) is arranged on one side of the expansion plate (5), mounting ears (7) are arranged on both sides of the fixing plate (6), screws (8) are arranged at the mounting ears (7), and the screws (8) are connected to the main profile steel (1).

2. A concealed connection device for a steel structure building according to claim 1, characterized in that: The side surface of the main steel section (1) is provided with a mounting groove used in conjunction with the mounting lug (7), and a threaded hole is provided at the mounting groove.

3. A concealed connection device for a steel structure building according to claim 1, characterized in that: Two expansion plates (5) are provided, and the two expansion plates (5) are in an integrated structure.

4. A concealed connection device for a steel structure building according to claim 1, characterized in that: The inner side surface of the expansion plate (5) is in a curved structure.

5. A concealed connection device for a steel structure building according to claim 1, characterized in that: The expansion plate (5) is made of alloy steel.

6. A concealed connection device for a steel structure building according to claim 1, characterized in that: The fixing plate (6) and the mounting lifting ear (7) are in a fused integrated structure.

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