A concrete expansion joint sealing device

Abstract

This invention relates to the field of building construction technology, specifically to a concrete expansion joint sealing device, comprising: a limiting plate on the side of a first baffle, a positioning groove on the side of a second baffle, polyethylene foam injected into the first and second baffles after splicing, and sealant injected into an elastic polyethylene film; the beneficial effects are as follows: firstly, the first and second baffles are adjusted according to the required width of the expansion joint to be filled; then, polyethylene foam is placed inside the first and second baffles; finally, sealant is injected into the elastic polyethylene film; and finally, the elastic polyethylene film after the sealant is injected can be fixed on the surface of the polyethylene foam, thereby allowing the concrete surface layer to be injected onto the base layer. After construction, the elastic polyethylene film at the end is cut open with a utility knife; after being cut open, the elastic polyethylene film automatically shrinks, exposing the top sealant, thereby filling the gap of the expansion joint and achieving a sealing effect.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a concrete expansion joint sealing device. Background Technology

[0002] Expansion joints, also known as temperature joints, are structural joints installed at appropriate locations along the construction joint direction of a building or structure to prevent cracks or damage to building components due to changes in climate temperature (thermal expansion and contraction).

[0003] Currently, expansion joints are constructed by cutting them after the entire length or using extruded polystyrene boards for separation, followed by sealing with sealant. This construction technique involves many steps, requires seamless transitions between steps, and the expansion joints are prone to contamination. In waterproofing cases, water can easily seep into the expansion joints, affecting the waterproofing effect. Therefore, this invention proposes a concrete expansion joint sealing device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a concrete expansion joint sealing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a concrete expansion joint sealing device, the concrete expansion joint sealing device comprising: a first baffle and a second baffle, a limiting plate being provided on the side of the first baffle, and a positioning groove being provided on the side of the second baffle, the first baffle and the second baffle being spliced ​​together by the limiting plate and the positioning groove, and polyethylene foam being injected into the spliced ​​first baffle and the second baffle. Elastic polyethylene film, with sealant injected inside the elastic polyethylene film; The first sealing plate has a fixing groove on its side. The second sealing plate has a positioning block on its side.

[0006] Preferably, the first baffle and the second baffle are in an L-shaped plate structure, the limiting plate is in a square plate structure, the limiting plate is inserted into the positioning groove, and the limiting plate and the positioning groove are slidably connected.

[0007] Preferably, both the first baffle and the second baffle have placement grooves on their surfaces. After the polyethylene foam is injected into the first baffle and the second baffle, flow grooves are formed on the sides of the injected polyethylene foam.

[0008] Preferably, both the first baffle and the second baffle have a feed inlet on their sides, and the feed inlet has a square plate-shaped structure.

[0009] Preferably, both the first sealing plate and the second sealing plate are provided with mounting plates on their sides, and the mounting plates are placed in the placement groove.

[0010] Preferably, the positioning block has a square plate-like structure, is inserted into the fixing groove, and is slidably connected to the fixing groove.

[0011] Preferably, the mounting plate has a square plate structure, and a positioning groove is provided on the surface of the mounting plate. The positioning groove has a square plate structure.

[0012] Preferably, a protective plate is inserted into the positioning slot. The protective plate has a square plate structure. Two sets of first and second sealing plates are provided, and the two sets of first and second sealing plates are symmetrically distributed about the first and second baffles.

[0013] Preferably, the first baffle and the second baffle are spliced ​​together and placed on the surface of the base layer, and the concrete surface layer is poured on the surface of the base layer.

[0014] Preferably, the elastic polyethylene film is injected with sealant and then adhered to the surface of the polyethylene foam, and the elastic polyethylene film is cut with a utility knife.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention proposes a concrete expansion joint sealing device. First, adjust the first and second baffles according to the required expansion joint width. Then, fix the first and second baffles with adhesive. Next, place polyethylene foam inside the first and second baffles. Finally, inject sealant into an elastic polyethylene film. The elastic polyethylene film, after being injected with sealant, is then fixed to the surface of the polyethylene foam, allowing for the injection of concrete onto the base layer. After construction, the elastic polyethylene film at one end is cut open with a utility knife. Once cut, the elastic polyethylene film automatically shrinks, exposing the top sealant. Lacking the constraint of the elastic polyethylene film, the sealant flows naturally, filling the gaps in the expansion joint and achieving a sealing effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the device of the present invention; Figure 2 This is a front view of the device of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a top view of the device of the present invention; Figure 5 for Figure 4 Enlarged structural diagram at point B; Figure 6 This is a side sectional view of the device of the present invention; Figure 7 This is a schematic diagram of the structure of the device of the present invention after filling.

[0017] In the diagram: 1. First baffle; 2. Second baffle; 3. Limiting plate; 4. Positioning groove; 5. Polyethylene foam; 6. Elastic polyethylene film; 7. Sealant; 8. First sealing plate; 9. Fixing groove; 10. Second sealing plate; 11. Positioning block; 12. Placement groove; 13. Flow groove; 14. Inlet; 15. Mounting plate; 16. Positioning slot; 17. Protective plate; 18. Base layer; 19. Concrete surface layer; 20. Wallpaper knife. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1:

[0019] Please see Figures 1 to 7 This invention provides a technical solution: a concrete expansion joint sealing device, comprising: a first baffle 1 and a second baffle 2, wherein a limiting plate 3 is provided on the side of the first baffle 1, and a positioning groove 4 is provided on the side of the second baffle 2; the first baffle 1 and the second baffle 2 are spliced ​​together by the limiting plate 3 and the positioning groove 4; polyethylene foam 5 is injected into the spliced ​​first baffle 1 and the second baffle 2; an elastic polyethylene film 6 is injected with sealant 7; a first sealing plate 8 is provided with a fixing groove 9 on its side; and a second sealing plate 10 is provided with a positioning block 11 on its side. First, adjust the first baffle 1 and the second baffle 2 according to the required width of the expansion joint. Then, fix the first baffle 1 and the second baffle 2 with glue. Next, place the polyethylene foam 5 inside the first baffle 1 and the second baffle 2. This facilitates the support and placement of the polyethylene foam 5 by the cooperation of the first baffle 1 and the second baffle 2, preventing the polyethylene foam 5 from tilting when placed on the base layer 18. Finally, inject the sealant 7 into the elastic polyethylene film 6. Then, fix the elastic polyethylene film 6 after the sealant 7 is injected onto the surface of the polyethylene foam 5. The concrete surface layer 19 can then be injected onto the surface of the base layer 18. After construction, use a utility knife 20 to cut open the end of the elastic polyethylene film 6. After the elastic polyethylene film 6 is cut open, it automatically shrinks, exposing the top sealant 7. Due to the lack of restraint from the elastic polyethylene film 6, the sealant 7 becomes a naturally flowing sealant 7, thereby filling the gap of the expansion joint and achieving a sealing effect. Example 2:

[0020] Based on Embodiment 1, for the convenience of providing initial support for polyethylene foam 5, a first baffle 1 and a second baffle 2 are provided. The first baffle 1 and the second baffle 2 are in the form of an "L" shaped plate structure. The limiting plate 3 is in the form of a square plate structure. The limiting plate 3 is inserted into the positioning groove 4 and is slidably connected to the positioning groove 4. The surfaces of the first baffle 1 and the second baffle 2 are both provided with placement grooves 12. After the polyethylene foam 5 is injected into the first baffle 1 and the second baffle 2, the side of the injected polyethylene foam 5 is provided with a flow groove 13. The sides of the first baffle 1 and the second baffle 2 are both provided with inlets 14, which are in the form of square plates. When it is necessary to control expansion joints of different widths or adapt to polyethylene foam 5 of different widths during use, the limiting plate 3 set on the side of the first baffle 1 can be inserted into the positioning groove 4 firstly. The distance between the two sets of first baffle 1 and second baffle 2 can be adjusted by the displacement of the limiting plate 3 in the positioning groove 4. Then, the first baffle 1 and second baffle 2 are glued and fixed, which makes it easy to place polyethylene foam 5 of different widths. Then, the spliced ​​first baffle 1 and second baffle 2 are placed on the surface of the base layer 18, so that the concrete surface layer 19 can be poured. Then, the concrete surface layer 19 can flow into the first baffle 1 and second baffle 2 through the flow groove 13 opened on the side of the polyethylene foam 5 to fill the gap between the first baffle 1 and second baffle 2 and the polyethylene foam 5, so as to avoid the gap being too large and affecting the filling effect of the subsequent sealant 7.

[0021] To facilitate the covering of both ends of the first baffle 1 and the second baffle 2, a first sealing plate 8 and a second sealing plate 10 are provided. The sides of the first sealing plate 8 and the second sealing plate 10 are provided with mounting plates 15. The mounting plates 15 are placed in the placement groove 12. The positioning block 11 has a square plate structure. The positioning block 11 is inserted into the fixing groove 9 and is slidably connected to the fixing groove 9. When in use, after adjusting the distance between the first baffle 1 and the second baffle 2 in conjunction with the limiting plate 3 and the positioning groove 4, the positioning block 11 set on the side of the second sealing plate 10 can be inserted into the fixing groove 9. Then, the distance between the first sealing plate 8 and the second sealing plate 10 can be adjusted by the displacement of the positioning block 11 in the fixing groove 9 to adapt to the adjusted first baffle 1 and the second baffle 2. Then, the mounting plate 15 is placed in the placement groove 12 to prevent the mounting plate 15 from protruding. The mounting plate 15 is placed in the placement groove 12 to support the first sealing plate 8 and the second sealing plate 10. After that, the first sealing plate 8 and the second sealing plate 10 need to be glued together. Then, the first baffle 1 and the second baffle 2 can be covered by the covering of the first sealing plate 8 and the second sealing plate 10. Example 3:

[0022] Based on Example 2, in order to prevent the elastic polyethylene film 6 from being prematurely punctured when pouring the concrete surface layer 19, a protective plate 17 is provided. The mounting plate 15 has a square plate structure, and a positioning slot 16 is provided on the surface of the mounting plate 15. The positioning slot 16 has a square plate structure, and the protective plate 17 is inserted into the positioning slot 16. The protective plate 17 has a square plate structure. Two sets of first sealing plates 8 and second sealing plates 10 are provided, and the two sets of first sealing plates 8 and second sealing plates 10 are symmetrically distributed about the first baffle 1 and the second baffle 2. When it is necessary to pour concrete surface layer 19 during use, the protective plate 17 can be inserted into the positioning slot 16. The positioning slot 16 supports the protective plate 17, and then the protective plate 17 can be used to cover the concrete surface layer 19, so as to prevent some of the poured concrete surface layer 19 from flowing onto the surface of the elastic polyethylene film 6 and causing it to be scratched, thereby causing the sealant 7 to flow out prematurely and affecting the subsequent filling effect.

[0023] To facilitate sealing of expansion joints, an elastic polyethylene film 6 is installed. The first baffle 1 and the second baffle 2 are spliced ​​together and placed on the surface of the base layer 18. The concrete surface layer 19 is poured on the surface of the base layer 18. After the sealant 7 is injected into the elastic polyethylene film 6, it is glued to the surface of the polyethylene foam 5. The elastic polyethylene film 6 is cut with a utility knife 20. When using the sealant 7, after injecting it into the elastic polyethylene film 6, the elastic polyethylene film 6 is glued to the surface of the polyethylene foam 5. After pouring through the concrete surface layer 19, the elastic polyethylene film 6 can be cut with a utility knife 20, thus removing the binding of the elastic polyethylene film 6 and allowing the sealant 7 to flow naturally, thereby filling the gaps in the expansion joint and achieving a sealing effect.

[0024] In actual use, the first baffle 1 and the second baffle 2 can be adjusted according to the required width of the expansion joint. The first baffle 1 and the second baffle 2 are then fixed with glue. Polyethylene foam 5 is then injected into the first baffle 1 and the second baffle 2. Finally, sealant 7 is injected into the elastic polyethylene film 6. The elastic polyethylene film 6, after the sealant 7 has been injected, is then fixed to the surface of the polyethylene foam 5. This allows the concrete surface layer 19 to be injected onto the base layer 18. After construction, the elastic polyethylene film 6 at the end is cut open with a utility knife 20. Once cut, the elastic polyethylene film 6 automatically shrinks, exposing the top sealant 7. Because it is no longer restrained by the elastic polyethylene film 6, the sealant 7 flows naturally, thus filling the gap. The expansion joint is fully sealed to achieve a sealing effect. In addition, when the concrete surface layer 19 needs to be poured later, the protective plate 17 can be inserted into the positioning slot 16. The positioning slot 16 supports the protective plate 17, and then the protective plate 17 can be used to shield the concrete surface layer 19, preventing some of the poured concrete surface layer 19 from flowing onto the surface of the elastic polyethylene film 6 and potentially causing it to be scratched, thus causing the sealant 7 to flow out prematurely and affecting the subsequent filling effect. In addition, the concrete surface layer 19 can flow into the first baffle 1 and the second baffle 2 through the flow groove 13 opened on the side of the polyethylene foam 5 to fill the gap between the first baffle 1 and the second baffle 2 and the polyethylene foam 5, avoiding too many gaps that would affect the subsequent filling effect of the sealant 7.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete expansion joint sealing device, characterized in that: The concrete expansion joint sealing device includes: a first baffle (1) and a second baffle (2). A limiting plate (3) is provided on the side of the first baffle (1), and a positioning groove (4) is provided on the side of the second baffle (2). The first baffle (1) and the second baffle (2) are spliced ​​together by the limiting plate (3) and the positioning groove (4). Polyethylene foam (5) is placed inside the spliced ​​first baffle (1) and second baffle (2). An elastic polyethylene film (6) is pasted on the surface of polyethylene foam (5), and a sealant (7) is injected into the elastic polyethylene film (6). The first sealing plate (8) has a fixing groove (9) on its side. The second sealing plate (10) has a positioning block (11) on its side. The first baffle (1) and the second baffle (2) are both provided with placement grooves (12). After the polyethylene foam (5) is placed in the first baffle (1) and the second baffle (2), flow grooves (13) are opened on the side of the polyethylene foam (5). After the sealant (7) is injected into the elastic polyethylene film (6), it is glued to the surface of the polyethylene foam (5). The elastic polyethylene film (6) is cut with a utility knife (20).

2. The concrete expansion joint sealing device according to claim 1, characterized in that: The first baffle (1) and the second baffle (2) are in an "L" shaped plate structure, the limiting plate (3) is in a square plate structure, the limiting plate (3) is inserted into the positioning groove (4), and the limiting plate (3) and the positioning groove (4) are slidably connected.

3. The concrete expansion joint sealing device according to claim 1, characterized in that: The first baffle (1) and the second baffle (2) are both provided with feed inlets (14) on their sides, and the feed inlets (14) are square plate-shaped structures.

4. A concrete expansion joint sealing device according to claim 1, characterized in that: The first sealing plate (8) and the second sealing plate (10) are both provided with mounting plates (15) on their sides, and the mounting plates (15) are placed in the placement groove (12).

5. A concrete expansion joint sealing device according to claim 1, characterized in that: The positioning block (11) has a square plate structure. The positioning block (11) is inserted into the fixing groove (9) and the positioning block (11) is slidably connected to the fixing groove (9).

6. A concrete expansion joint sealing device according to claim 4, characterized in that: The mounting plate (15) has a square plate structure, and a positioning slot (16) is provided on the surface of the mounting plate (15). The positioning slot (16) has a square plate structure.

7. A concrete expansion joint sealing device according to claim 6, characterized in that: The protective plate (17) is inserted into the positioning slot (16). The protective plate (17) has a square plate structure. There are two sets of the first sealing plate (8) and the second sealing plate (10). The two sets of the first sealing plate (8) and the second sealing plate (10) are symmetrically distributed about the first baffle (1) and the second baffle (2).

8. A concrete expansion joint sealing device according to claim 1, characterized in that: After the first baffle (1) and the second baffle (2) are spliced ​​together, they are placed on the surface of the base layer (18), and the concrete surface layer (19) is poured on the surface of the base layer (18).

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