High-strength corrosion-resistant steel-aluminum composite material structure

Abstract

A high-strength corrosion-resistant steel-aluminum composite material structure comprises an aluminum profile and a steel profile located in the aluminum profile, a first boss and a second boss which extend into a cavity are arranged on the two opposite side faces of the steel profile respectively, the side walls of the first boss and the second boss stretch outwards, a threaded hole is formed in the second boss, and the threaded hole is communicated with the cavity. Penetrating holes are formed in the positions, corresponding to the threaded holes, of the aluminum profile. The first boss and the second boss are arranged on the two opposite side faces of the steel profile respectively, and the threaded hole is formed in the second boss, so that the steel profile and the aluminum profile can adopt large clearance fit tolerance, during use, the threaded end of a screw penetrates through the penetrating hole and then is connected with the threaded hole in a screwed mode, the threaded end of the screw abuts against the first boss, and therefore the steel profile and the aluminum profile can be fixed. The four side faces of the steel profile are expanded outwards, so that the steel profile is tensioned in the aluminum profile, and the steel profile cannot shake and slide in the aluminum profile.

Description

Technical Field

[0001] The utility model relates to the technical field of building protection facility installation, in particular to a high-strength corrosion-resistant steel-aluminum composite material structure. Background Art

[0002] In the field of building protection facilities, aluminum profiles have good corrosion resistance, but the strength of aluminum profiles is slightly worse than that of steel profiles at the same thickness. At present, when applied to protective facilities with a length of more than 4 meters, if aluminum profiles are used alone, the protective facilities will shake greatly, affecting safety. Therefore, it is necessary to insert steel profiles into aluminum profiles to strengthen the structure of aluminum profiles. However, due to the long length of the profiles, how to insert the steel profiles into the aluminum profiles and make the steel profiles fit tightly with the aluminum profiles without shaking is a technical difficulty. If the matching tolerance between the steel profile and the aluminum profile is small, the steel profile is not easy to insert into the aluminum profile. If the clearance matching tolerance between the steel profile and the aluminum profile is large, the steel profile is easy to insert into the aluminum profile, but the steel profile will shake and slide inside the aluminum profile. Summary of the invention

[0003] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a high-strength, corrosion-resistant steel-aluminum composite material structure, by respectively arranging a first boss and a second boss on two opposite sides of the steel profile, and a threaded hole is arranged on the second boss, so that the steel profile and the aluminum profile can adopt a larger clearance fit tolerance. When in use, the threaded end of the screw passes through the penetration hole and is screwed into the threaded hole, and the threaded end of the screw abuts against the first boss, so that the four sides of the steel profile expand outward, thereby tightening the steel profile inside the aluminum profile, so that the steel profile will not shake or slide inside the aluminum profile.

[0004] In order to realize the above-mentioned technical features, the purpose of the utility model is achieved as follows: a high-strength, corrosion-resistant steel-aluminum composite material structure, comprising an aluminum profile and a steel profile located inside the aluminum profile, the steel profile is respectively provided with a first boss and a second boss extending into the cavity on two opposite sides, the side walls of the first boss and the second boss are both open outward, a threaded hole is provided on the second boss, and an entry hole is provided on the aluminum profile at a position corresponding to the threaded hole; in use, the threaded end of the screw passes through the entry hole and is screwed into the threaded hole, and the threaded end of the screw abuts against the first boss.

[0005] The threaded hole is formed by drilling and tapping on the second boss.

[0006] The threaded hole is formed for installing a rivet nut on the second boss.

[0007] The first boss is provided with a limiting groove, and in a use state, the threaded end of the screw abuts against the limiting groove.

[0008] The steel profile is respectively provided with reinforcement structures on the other two opposite sides.

[0009] The reinforcement structure is a groove or a wave-shaped indentation structure.

[0010] The utility model has the following beneficial effects:

[0011] 1. The utility model provides a first boss and a second boss on two opposite sides of the steel profile, and a threaded hole is provided on the second boss, so that the steel profile and the aluminum profile can adopt a larger clearance fit tolerance. When in use, the threaded end of the screw passes through the insertion hole and is screwed with the threaded hole, and the threaded end of the screw abuts against the first boss, so that the four sides of the steel profile expand outward, so that the steel profile is tightened inside the aluminum profile, so that the steel profile will not shake or slide inside the aluminum profile.

[0012] 2. A limiting groove is provided on the first boss of the utility model. When in use, the threaded end of the screw abuts against the limiting groove, which limits the screw and also enhances the structural strength of the steel profile.

[0013] 3. The steel profile of the utility model is provided with reinforcement structures on the other two opposite sides respectively, so as to improve the structural strength of the steel profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional schematic diagram of the first embodiment of the utility model.

[0015] Figure 2 It is a cross-sectional schematic diagram of a second embodiment of the utility model.

[0016] Figure 3 It is a cross-sectional schematic diagram of a third embodiment of the utility model.

[0017] Figure 4 It is a cross-sectional schematic diagram of a fourth embodiment of the present utility model.

[0018] Figure 5 It is a cross-sectional schematic diagram of the utility model in use state.

[0019] In the figure:

[0020] Aluminum profile 10, penetration hole 11;

[0021] Steel profile 20, cavity 21, first boss 22, limiting groove 23, second boss 24, threaded hole 25, rivet nut 26, reinforcement structure 27;

[0022] Screw 30. DETAILED DESCRIPTION

[0023] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0024] First embodiment:

[0025] See also Figure 1 A high-strength, corrosion-resistant steel-aluminum composite material structure comprises an aluminum profile 10 and a steel profile 20 located inside the aluminum profile 10, wherein the steel profile 20 is provided with a first boss 22 and a second boss 24 extending into a cavity 21 on two opposite sides, respectively, the side walls of the first boss 22 and the second boss 24 are both opened outward, a threaded hole 25 is provided on the second boss 24, and an insertion hole 11 is provided on the aluminum profile 10 at a position corresponding to the threaded hole 25; in a use state, the threaded end of a screw 30 passes through the insertion hole 11 and is screwed to the threaded hole 25, and the threaded end of the screw 30 abuts against the first boss 22. By respectively arranging a first boss 22 and a second boss 24 on two opposite sides of the steel profile 20, and a threaded hole 25 on the second boss 24, a larger clearance fit tolerance can be adopted between the steel profile 20 and the aluminum profile 10. When in use, the threaded end of the screw 30 passes through the penetration hole 11 and is screwed into the threaded hole 25, and the threaded end of the screw 30 abuts against the first boss 22, so that the four sides of the steel profile 20 expand outward, so that the steel profile 20 is tightened inside the aluminum profile 10, so that the steel profile 20 will not shake or slide inside the aluminum profile 10.

[0026] In this embodiment, the threaded hole 25 is formed by drilling and tapping on the second boss 24 .

[0027] Second embodiment:

[0028] See also Figure 2 The threaded hole 25 is formed for installing the rivet nut 26 on the second boss 24 .

[0029] Specifically, a mounting hole is firstly drilled on the second boss 24, and then the rivet nut 26 is installed on the mounting hole.

[0030] The third embodiment:

[0031] On the basis of the first embodiment, a limiting groove 23 is provided on the first boss 22, and in the use state, the threaded end of the screw 30 abuts against the limiting groove 23. Since the screw 30 generally adopts M6 or M8 specifications, in order to prevent the threaded end of the screw 30 from deforming and sliding off the first boss 22 when subjected to force, a limiting groove 23 is provided on the first boss 22 to limit the screw 30, and at the same time, the structural strength of the steel profile 20 is also enhanced.

[0032] Fourth embodiment:

[0033] Based on the first embodiment or the third embodiment, see Figure 4 The steel profile 20 is provided with reinforcement structures 27 on the other two opposite sides to improve the structural strength of the steel profile 20. Specifically, the reinforcement structure 27 is a groove or a wave-shaped indentation structure.

[0034] Specifically, Figure 4 The reinforcement structure 27 shown in the figure is a groove structure. The wave-shaped indentation structure is a continuous wave groove structure formed by cold bending roll forming.

Claims

1. A high-strength, corrosion-resistant steel-aluminum composite material structure, comprising an aluminum profile (10) and a steel profile (20) located inside the aluminum profile (10), characterized in that: The steel profile (20) is provided with a first boss (22) and a second boss (24) extending into the cavity (21) on two opposite side surfaces, respectively; the side walls of the first boss (22) and the second boss (24) are both open outwards; the second boss (24) is provided with a threaded hole (25); and the aluminum profile (10) is provided with a penetration hole (11) at a position corresponding to the threaded hole (25); in a use state, the threaded end of the screw (30) passes through the penetration hole (11) and is screwed into the threaded hole (25), and the threaded end of the screw (30) abuts against the first boss (22).

2. The high-strength, corrosion-resistant steel-aluminum composite material structure according to claim 1, characterized in that: The threaded hole (25) is formed by drilling and tapping on the second boss (24).

3. The high-strength, corrosion-resistant steel-aluminum composite material structure according to claim 1, characterized in that: The threaded hole (25) is formed for mounting a rivet nut (26) on the second boss (24).

4. The high-strength, corrosion-resistant steel-aluminum composite material structure according to claim 1, characterized in that: A limiting groove (23) is provided on the first boss (22), and in a use state, the threaded end of the screw (30) abuts against the limiting groove (23).

5. A high-strength, corrosion-resistant steel-aluminum composite material structure according to claim 1 or 4, characterized in that: The steel profile (20) is provided with reinforcement structures (27) on two other opposite sides respectively.

6. The high-strength, corrosion-resistant steel-aluminum composite material structure according to claim 5, characterized in that: The reinforcement structure (27) is a groove or a wave-shaped indentation structure.

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