A long service life embedded plate

Abstract

The utility model discloses a long service life's pre -buried plate, including anchor plate and anchor bar, the surface of anchor plate and anchor bar is covered with composite coating, the composite coating includes epoxy zinc rich primer layer, epoxy cloud iron intermediate paint layer, fluorocarbon finish layer and nanometer hydrophobic coating from inside to outside in proper order, the anchor bar includes top muscle, middle part muscle, bottom muscle, curved muscle, first screw rod, first screw hole, second screw rod and second screw hole. The utility model discloses a long service life's pre -buried plate, composite coating (epoxy zinc rich primer + epoxy cloud iron intermediate paint + fluorocarbon finish + nanometer hydrophobic layer) forms multiple anticorrosion barrier, so that pre -buried plate has better anticorrosive property, through the nanometer hydrophobic coating of setting, reduces moisture penetration, avoids electrochemistry corrosion, and the length of anchor bar can be selected according to the depth of concrete or pre -buried design depth.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a pre-embedded plate with a long service life. Background Technology

[0002] Pre-embedded plates (also known as embedded parts) are metal components pre-installed in concrete or steel structures for later connection to other building components (such as curtain walls, steel structures, equipment supports, etc.). They are an important connection medium in building construction, ensuring structural stability and ease of construction.

[0003] Existing building embedded plates typically consist of anchor plates and anchor bars; however, traditional embedded plates have the following drawbacks: 1. Insufficient corrosion resistance: Ordinary carbon steel anchor plates are prone to rust, especially in humid and salt spray environments, where the coating is easy to peel off, resulting in a shortened structural lifespan; 2. Fixed anchor bar length: Most existing anchor bars are integral welded structures, which cannot be flexibly adjusted according to the pre-embedded depth of concrete, thus limiting their applicability.

[0004] Therefore, we propose a pre-embedded plate with a long service life. Utility Model Content

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a long-life embedded plate with advantages such as long service life and the ability to select the length of the anchor bars according to the depth of the concrete or the pre-embedded design depth, thereby improving applicability. This effectively solves the problems in the background technology.

[0006] (II) Technical Solution To achieve the above objectives, the technical solution adopted by this utility model is as follows: a long-service-life embedded plate, comprising an anchor plate and anchor bars, wherein the surfaces of the anchor plate and anchor bars are covered with a composite coating, the composite coating comprising, from the inside out, an epoxy zinc-rich primer layer, an epoxy micaceous iron oxide intermediate paint layer, a fluorocarbon topcoat layer and a nano hydrophobic coating, wherein the anchor bars comprise a top bar, a middle bar, a bottom bar, a bent bar, a first screw, a first threaded hole, a second screw and a second threaded hole, and the number of anchor bars is four sets, wherein the upper outer surface of the top bar in the four sets of anchor bars is welded to the four corners of the lower outer surface of the anchor plate.

[0007] Preferably, the bent rib is located on the lower outer surface of the bottom rib, and the bent rib and the bottom rib are integrally bent and formed, and the middle rib is located between the top rib and the bottom rib.

[0008] Preferably, the first screw is fixed to the lower outer surface of the top rib, the first threaded hole is opened on the upper outer surface of the middle rib, the second screw is fixed to the lower outer surface of the middle rib, the second threaded hole is opened on the upper outer surface of the bottom rib, the first screw and the first threaded hole are threadedly connected, and the second screw and the second threaded hole are threadedly connected.

[0009] Preferably, the dry film thickness of the epoxy zinc-rich primer layer is 60~80μm, and the zinc powder content is ≥80wt%; the dry film thickness of the epoxy micaceous iron oxide intermediate paint layer is 100~150μm, and the mica iron oxide content is ≥30wt%; the dry film thickness of the fluorocarbon topcoat layer is 40~60μm, and the fluorocarbon resin content is ≥70wt%.

[0010] Preferably, the nano-hydrophobic coating is a graphene-doped silica sol-gel coating with a thickness of 5~10μm.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a pre-embedded plate with a long service life, which has the following beneficial effects: 1. This type of embedded plate with a long service life has a composite coating (epoxy zinc-rich primer + epoxy micaceous iron oxide intermediate paint + fluorocarbon topcoat + nano hydrophobic layer) forming multiple anti-corrosion barriers, which makes the embedded plate have good anti-corrosion properties. The nano hydrophobic coating reduces water penetration and avoids electrochemical corrosion.

[0012] 2. This type of long-life embedded plate features modular anchor bars that can be freely assembled via threaded connections (first screw / first threaded hole, second screw / second threaded hole). The number of central reinforcement bars can be increased or decreased according to the concrete depth to meet different engineering needs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a long-service-life embedded plate according to this utility model.

[0014] Figure 2 This is a schematic diagram of the layered structure of the composite coating in a long-service embedded plate according to the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of the anchor bar in the embedded plate with a long service life according to this utility model.

[0016] Figure 4 This is a partial side cross-sectional view of the anchor bar in the embedded plate with a long service life according to this utility model.

[0017] In the diagram: 1. Anchor plate; 2. Anchor bar; 3. Epoxy zinc-rich primer layer; 4. Epoxy micaceous iron oxide intermediate paint layer; 5. Fluorocarbon topcoat layer; 6. Nano hydrophobic coating; 7. Top bar; 8. Middle bar; 9. Bottom bar; 10. Bending bar; 11. First screw; 12. First threaded hole; 13. Second screw; 14. Second threaded hole. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] This embodiment is a pre-embedded plate with a long service life.

[0020] like Figure 1-4 As shown, the structure includes an anchor plate 1 and anchor bars 2. The surfaces of the anchor plate 1 and anchor bars 2 are covered with a composite coating. The composite coating, from the inside out, includes an epoxy zinc-rich primer layer 3, an epoxy micaceous iron oxide intermediate paint layer 4, a fluorocarbon topcoat layer 5, and a nano-hydrophobic coating layer 6. The anchor bars 2 include a top bar 7, a middle bar 8, a bottom bar 9, a bent bar 10, a first screw 11, a first threaded hole 12, a second screw 13, and a second threaded hole 14. There are four sets of anchor bars 2. The upper outer surface of the top bar 7 in the four sets of anchor bars 2 is welded to the four corners of the lower outer surface of the anchor plate 1.

[0021] Example 1: Preparation and installation of embedded plate: 1. Material preparation: Anchor plate 1 is made of Q355B steel plate, with dimensions of 200mm×200mm×10mm; The top reinforcement 7, middle reinforcement 8, and bottom reinforcement 9 of anchor bar 2 are HRB400 steel bars with a diameter of 16mm.

[0022] 2. Composite coating application: Sandblasting treatment of anchor plates and anchor bars to Sa2.5 grade; Apply epoxy zinc-rich primer 3 (zinc powder content 85wt%, thickness 70μm); Spray epoxy micaceous iron oxide intermediate paint 4 (thickness 120μm); Roller-coated fluorocarbon topcoat 5 (thickness 50μm); A nano-hydrophobic coating 6 (graphene-silica sol, 8 μm thick) was applied by impregnation.

[0023] 3. Anchor bar assembly: Screw the first screw 11 of the top rib 7 into the first threaded hole 12 of the middle rib 8; According to the design depth, 1 to 3 sections of middle reinforcement 8 are superimposed, and finally the bottom reinforcement 9 and the bending reinforcement 10 are connected.

[0024] 4. Concrete embedding: The assembled embedded plate is positioned in the template, C30 concrete is poured, and it is vibrated to compact.

[0025] Example 2: Performance Testing Salt spray test: Tested according to GB / T 10125 standard, the composite coating has a rust-free time of up to 3200 hours; Pull-out test: The bond strength between the anchor bar and the concrete is ≥12MPa, which meets the requirements of GB 50010.

[0026] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A long-service-life embedded plate, comprising an anchor plate (1) and anchor bars (2), characterized in that: The surfaces of the anchor plate (1) and the anchor bar (2) are covered with a composite coating. The composite coating includes, from the inside out, an epoxy zinc-rich primer layer (3), an epoxy micaceous iron oxide intermediate paint layer (4), a fluorocarbon topcoat layer (5), and a nano hydrophobic coating layer (6). The anchor bar (2) includes a top bar (7), a middle bar (8), a bottom bar (9), a bent bar (10), a first screw (11), a first threaded hole (12), a second screw (13), and a second threaded hole (14). There are four sets of anchor bars (2). The upper outer surface of the top bar (7) in the four sets of anchor bars (2) is welded to the four corners of the lower outer surface of the anchor plate (1).

2. The embedded plate with a long service life according to claim 1, characterized in that: The bent rib (10) is located on the lower outer surface of the bottom rib (9), and the bent rib (10) and the bottom rib (9) are integrally bent. The middle rib (8) is located between the top rib (7) and the bottom rib (9).

3. The embedded plate with a long service life according to claim 2, characterized in that: The first screw (11) is fixed to the lower outer surface of the top rib (7), the first threaded hole (12) is opened on the upper outer surface of the middle rib (8), the second screw (13) is fixed to the lower outer surface of the middle rib (8), and the second threaded hole (14) is opened on the upper outer surface of the bottom rib (9). The first screw (11) and the first threaded hole (12) are threaded together, and the second screw (13) and the second threaded hole (14) are threaded together.

4. The embedded plate with a long service life according to claim 3, characterized in that: The dry film thickness of the epoxy zinc-rich primer layer (3) is 60~80μm, and the zinc powder content is ≥80wt%; the dry film thickness of the epoxy micaceous iron oxide intermediate paint layer (4) is 100~150μm, and the mica iron oxide content is ≥30wt%; the dry film thickness of the fluorocarbon topcoat layer (5) is 40~60μm, and the fluorocarbon resin content is ≥70wt%.

5. The embedded plate with a long service life according to claim 4, characterized in that: The nano-hydrophobic coating (6) is a graphene-doped silica sol-gel coating with a thickness of 5~10μm.

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