Insertion type connecting structure of extension arm and stand column

Abstract

The utility model relates to a plug-in type connecting structure of an extension arm and a stand column, which comprises the stand column, the extension arm, a bottom plate and an n-shaped connecting plate, the bottom plate is arranged at the bottom of the extension arm, the n-shaped connecting plate is arranged at the bottom of the bottom plate, the n-shaped connecting plate is inserted into the top of the stand column and is connected through a bolt, and the outer edge of the bottom plate protrudes out of the side edge of the stand column. The problem of corrosion when the extension arm on the fence is connected with the stand column is solved, the joint part is hidden in the stand column by adopting an insertion type structure, and meanwhile, the size of the outer edge of the bottom plate is increased to cover the side edge of the stand column, so that rainwater is prevented from entering the stand column through the top of the stand column to cause corrosion; and meanwhile, the n-shaped connecting plate is adopted, so that the problem of zinc slag residues in the galvanizing process of the extension arm is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fence protection, and particularly relates to an insertion type connection structure of an extension arm and a column. Background Art

[0002] In the nuclear system, the top of the solid protection barrier fence usually needs to be installed with anti-climbing extension arms, some of which are V-shaped two-way extension arms, and some are one-way extension arms; the nuclear system's solid protection barrier fence has high requirements for protection capabilities and service life. At the same time, many projects are located in coastal areas with serious corrosion, so the corrosion resistance of the fence is very high. In order to ensure the service life of the fence, the columns usually adopt the production process of post-hot dip galvanizing + electrostatic powder spraying, and the galvanizing amount requirement is usually 60μm.

[0003] If the extension arm is directly welded to the column, post-hot-dip galvanizing cannot be performed, because post-hot-dip galvanizing must ensure that the air circulates inside the pipe during the galvanizing process, otherwise the zinc flow cannot penetrate, or the internal air does not circulate, causing the pipe to deform or even burst.

[0004] If the flange is welded on the top of the column for connection, a hole needs to be opened in the middle of the flange in advance (for hot-dip galvanizing exhaust). In addition, since the total length of the column is generally about 3.5 meters, the operation is difficult and usually cannot be completed by one person, resulting in low efficiency.

[0005] If the connection is made by installing a connecting cap at the bottom of the extension arm, the processing is complicated. The extension arm needs to be hot-dip galvanized. At the same time, in order to ensure the strength of the extension arm, the column cap needs to be made of a steel plate at least 5mm thick. Such a thick steel plate is difficult to bend and the process is complicated and difficult. It is also easy to cause zinc slag to remain inside the cap during galvanizing. Utility Model Content

[0006] In view of this, the purpose of the utility model is to address the deficiencies of the prior art and provide an insert-type connection structure between an extension arm and a column, which can galvanize the extension arm and the column respectively, thereby improving the anti-corrosion ability of the fence and extending its service life.

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

[0008] An insertion connection structure of an extension arm and a column comprises a column, an extension arm, a base plate and an n-shaped connection plate. The base plate is arranged at the bottom of the extension arm, and an n-shaped connection plate is arranged at the bottom of the base plate. The n-shaped connection plate is inserted into the top of the column and connected by bolts, and the outer edge of the base plate protrudes from the side of the column.

[0009] In order to better implement the utility model, further optimization is made in the above structure, and the top of the n-shaped connecting plate is welded to the bottom of the base plate.

[0010] In order to better realize the utility model, further optimization is made in the above structure, and arc-shaped grooves are provided on both sides of the top of the n-shaped connecting plate.

[0011] In order to better realize the utility model, further optimization is made in the above structure, and bolts pass through the side surface of the column and the side surface of the n-shaped connecting plate to connect them.

[0012] In order to better realize the utility model, further optimization is made in the above structure, and the height of the n-shaped connecting plate is 120 mm.

[0013] In order to better implement the utility model, further optimization is made in the above structure, and multiple bolts are provided.

[0014] In order to better realize the utility model, further optimization is made in the above structure, and the outer edge of the bottom plate protrudes from the side of the column by 5-10 mm.

[0015] In order to better realize the utility model, further optimization is made in the above structure, and the thickness of the bottom plate is 5mm.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The plug-in connection structure of the extension arm and the column provided by the utility model solves the corrosion problem when the extension arm and the column are connected on the fence. The plug-in structure is used to hide the connecting part inside the column, and at the same time the outer edge size of the bottom plate is increased to cover the side of the column to prevent rainwater from entering the column through the top of the column and causing corrosion; at the same time, the n-shaped connecting plate is used to avoid the problem of zinc slag residue remaining in the extension arm during the galvanizing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the exploded structure of the extension arm and the column in the utility model;

[0020] Figure 2 It is a side view of the extension arm in the utility model;

[0021] Figure 3 It is a structural schematic diagram of an n-shaped connecting plate in the utility model.

[0022] In the figure:

[0023] 1-column, 2-extension arm, 3-base plate, 4-n-shaped connecting plate, 401-groove, 5-bolt. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] Reference Figure 1-Figure 3 The plug-in connection structure between the extension arm and the column provided by the utility model is as follows: Figure 1 As shown, it includes a column 1, an extension arm 2, a bottom plate 3 and an n-shaped connecting plate 4. Figure 2As shown, the bottom plate 3 is welded to the bottom of the extension arm 2, and the top of the n-shaped connecting plate 4 is welded to the bottom of the bottom plate 3. The extension arm 2 is inserted into the top of the column 1 through the bottom n-shaped connecting plate 4 and connected with its bolt 5. The bolt 5 passes through the side of the column 1 and the side of the n-shaped connecting plate 4 to connect them. The height of the n-shaped connecting plate 4 is 120mm, which makes the combination area of ​​the n-shaped connecting plate 4 and the column 1 larger. If the insertion depth of the n-shaped connecting plate 4 is too small, it is easy to affect the firmness of the extension arm. In particular, the top of the extension arm 2 needs to be installed with steel barbed wire, which needs to bear the lateral tension of the steel barbed wire. The n-shaped connecting plate 4 needs to borrow its own strength and reduce the gap with the inside of the column 1 to bear the lateral tension of the steel barbed wire. A plurality of bolts 5 are provided to improve the connection strength and stability.

[0028] The outer edge of the bottom plate 3 protrudes from the side of the column 1 by 5-10 mm, so that it can completely cover the side of the column 1. If the protrusion is too small, rainwater will enter the inside of the column 1, and if the protrusion is too large, it will cause waste and affect the appearance. The thickness of the bottom plate 3 is 5 mm, so that the extension arm 2 after welding is more solid.

[0029] like Figure 3 As shown, arc-shaped grooves 401 are provided on both sides of the top of the n-shaped connecting plate 4. The welding between the n-shaped connecting plate 4 and the bottom plate 3 needs to be fully welded, and cannot be welded on the backs of the two vertical plates on the n-shaped connecting plate 4, but can only be welded on both sides of the horizontal plate on the n-shaped connecting plate 4. If it is welded to the back of the vertical plate, it will directly affect the vertical angle of the vertical plate and the horizontal plate on the n-shaped connecting plate 4 (because the thermal change during welding causes the vertical angle of the vertical plate and the horizontal plate to become larger or smaller), thereby affecting the later installation or requiring special adjustments; therefore, inward arc-shaped grooves 401 are made on both sides of the horizontal plate on the n-shaped connecting plate 4 to reserve welding positions, so that the solder after welding will not bulge out to affect the installation, and at the same time, it can also ensure that the n-shaped connecting plate 4 does not deform during welding.

[0030] During on-site installation, it is only necessary to insert the n-shaped connecting plate 4 at the bottom of the extension arm 2 into the top of the column 1, and then use the bolts 5 to fix them together to complete the installation. The installation is very simple and has excellent corrosion resistance.

[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An insertion connection structure between an extension arm and a column, characterized in that: The invention comprises a column (1), an extension arm (2), a base plate (3) and an n-shaped connecting plate (4), wherein the base plate (3) is arranged at the bottom of the extension arm (2), the n-shaped connecting plate (4) is arranged at the bottom of the base plate, the n-shaped connecting plate (4) is inserted into the top of the column (1) and connected by bolts (5), and the outer edge of the base plate (3) protrudes from the side of the column (1).

2. The plug-in connection structure of the extension arm and the column according to claim 1, characterized in that: The top of the n-shaped connecting plate (4) is welded to the bottom of the base plate (3).

3. The plug-in connection structure of the extension arm and the column according to claim 2, characterized in that: Arc-shaped grooves (401) are provided on both sides of the top of the n-shaped connecting plate (4).

4. The plug-in connection structure of the extension arm and the column according to claim 3, characterized in that: The bolts (5) pass through the side of the column (1) and the side of the n-shaped connecting plate (4) to connect them.

5. The plug-in connection structure of the extension arm and the column according to claim 4, characterized in that: The n-shaped connecting plate (4) has a height of 120 mm.

6. The plug-in connection structure of the extension arm and the column according to claim 5, characterized in that: A plurality of the bolts (5) are provided.

7. The plug-in connection structure of the extension arm and the column according to any one of claims 1 to 6, characterized in that: The outer edge of the bottom plate (3) protrudes from the side of the column (1) by 5-10 mm.

8. The plug-in connection structure of the extension arm and the column according to claim 7, characterized in that: The bottom plate (3) has a thickness of 5 mm.

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