Expansion joint for building
By wrapping galvanized iron sheets on polyethylene low foaming plates and connecting them with self-tapping screws, it strengthens its rigidity and uses hard-edged bottom edge iron sheets to avoid distortion, the deformation and edge lines of existing expansion joints during molding and pouring are solved. The problem of not being straight has achieved a more stable and beautiful expansion joint effect.
Patent Information
- Application Number
- CN202420777316.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-16
AI Technical Summary
Existing polyethylene low foaming plate expansion joints for existing construction are prone to bend when erecting the mold, and are distorted due to pressure changes during concrete pouring, and the edges are not straight and uneven, which affects the aesthetics and filling quality.
The galvanized iron sheet is wrapped and connected by self-tapping screws to enhance the rigidity of the polyethylene low foaming plate, ensuring that it is not easy to deform, and the iron sheet is wrapped around the hard edge at the bottom to avoid distortion, forming a straight edge.
It improves the rigidity of the polyethylene low foaming plate, simplifies the molding process, ensures that the expansion joint edges are neat and beautiful, and improves the stability and filling effect of the concrete structure.
Smart Images
Figure CN222140346U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, and in particular relates to an expansion joint for construction. Background Art
[0002] Building expansion joints, also known as expansion joints, refer to gaps pre-set in the concrete structure to prevent cracks or damage caused by shrinkage, temperature changes and other factors during the hardening process of the concrete, so that the building can expand and contract horizontally along the length.
[0003] At present, polyethylene low-foam board expansion joints are usually used in existing construction and fixed with special glue, which can effectively prevent deformation and damage of concrete expansion joints and improve the stability and durability of concrete structures. However, there are still some disadvantages in use. Since polyethylene low-foam board has a certain flexibility, it often bends when erecting the formwork and requires workers to support it. At the same time, during the concrete pouring process, the change in pressure on both sides will cause the expansion joint to twist, resulting in the expansion joint's edge line not being straight enough and not being neat and beautiful enough.
[0004] Based on this, the utility model designs a construction expansion joint to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the shortcomings in the prior art and proposes an expansion joint for construction.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a construction expansion joint, comprising a polyethylene low-foam board, a bottom edging iron sheet, a first reinforcing screw, a left edging iron sheet, a first self-tapping screw, a second reinforcing screw, a top edging iron sheet, a second self-tapping screw, a right edging iron sheet, a third self-tapping screw, a third reinforcing screw and a fourth self-tapping screw, the bottom end of the polyethylene low-foam board is wrapped with a bottom edging iron sheet, the top end of the polyethylene low-foam board is wrapped with a top edging iron sheet, the left side of the polyethylene low-foam board is wrapped with a left edging iron sheet, and the right side of the polyethylene low-foam board is wrapped with a right edging iron sheet.
[0007] As a preferred technical solution of the utility model, the bottom edging iron sheet wrapped around the lower end of the polyethylene low-foam board is connected to the polyethylene low-foam board through two first reinforcing screws, and the left end of the bottom edging iron sheet is connected to the left edging iron sheet through a first self-tapping screw.
[0008] As a preferred technical solution of the utility model, the lower end of the left side edging iron sheet is placed inside the bottom edging iron sheet, and the left side edging iron sheet is connected to the polyethylene low-foam board by two second reinforcing screws.
[0009] As a preferred technical solution of the utility model, the left end of the top edging iron sheet is placed inside the upper end of the left edging iron sheet, and the left edging iron sheet is connected to the top edging iron sheet by a second self-tapping screw.
[0010] As a preferred technical solution of the utility model, the right end of the top edging iron sheet is connected to the right edging iron sheet by a third self-tapping screw.
[0011] As a preferred technical solution of the utility model, the upper end of the right side edging iron sheet is placed in the third self-tapping screw, and the right side edging iron sheet is connected to the polyethylene low-foaming board through two third reinforcing screws.
[0012] As a preferred technical solution of the utility model, the lower end of the right edging iron sheet is placed inside the bottom edging iron sheet, and the right edging iron sheet is connected to the bottom edging iron sheet by a fourth self-tapping screw.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The utility model adopts a structure in which galvanized iron sheets are used around the polyethylene low-foam board to wrap the corners and connect them with self-tapping screws, thereby enhancing the rigidity of the polyethylene low-foam board and making it less likely to deform, thereby facilitating the erection of the mold, so that the expansion joint can be easily erected without manual support, and facilitating the pouring of concrete;
[0015] 2. The utility model connects the bottom of the polyethylene low-foam board to the bottom edging iron sheet, which can prevent the polyethylene low-foam board from twisting during concrete pouring. By adopting a straight hard-edge bottom edging iron sheet, the expansion joint edge line and the hidden line can form a straight line, making the expansion joint edge neater and more beautiful, ensuring that the filling quality and effect of the expansion joint meet the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0017] Figure 1 It is a schematic diagram of the overall front view structure of the utility model;
[0018] Figure 2 It is a schematic diagram of the overall rear view structure of the utility model;
[0019] Figure 3 It is a schematic diagram of the overall explosion structure of the utility model;
[0020] Figure 4This is a schematic diagram of the top edge iron sheet connection structure of the utility model;
[0021] Figure 5 It is a schematic diagram of the bottom edging iron sheet connection structure of the utility model.
[0022] In the figure: 1. Polyethylene low-foam board; 2. Bottom edging iron sheet; 3. First reinforcement screw; 4. Left edging iron sheet; 5. First self-tapping screw; 6. Second reinforcement screw; 7. Top edging iron sheet; 8. Second self-tapping screw; 9. Right edging iron sheet; 10. Third self-tapping screw; 11. Third reinforcement screw; 12. Fourth self-tapping screw. DETAILED DESCRIPTION
[0023] The following will be combined with the attached embodiment of the utility model Figure 1-5 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides the following technical solutions: a construction expansion joint, comprising a polyethylene low-foam board 1, a bottom edging iron sheet 2, a first reinforcing screw 3, a left edging iron sheet 4, a first self-tapping screw 5, a second reinforcing screw 6, a top edging iron sheet 7, a second self-tapping screw 8, a right edging iron sheet 9, a third self-tapping screw 10, a third reinforcing screw 11 and a fourth self-tapping screw 12. The bottom end of the polyethylene low-foam board 1 is wrapped with the bottom edging iron sheet 2, the top of the polyethylene low-foam board 1 is wrapped with the top edging iron sheet 7, the left side of the polyethylene low-foam board 1 is wrapped with the left edging iron sheet 4, and the right side of the polyethylene low-foam board 1 is wrapped with the right edging iron sheet 9.
[0025] By using a bottom edging iron sheet 2, a left edging iron sheet 4, a top edging iron sheet 7 and a right edging iron sheet 9 around the polyethylene low-foam board 1 to connect the corners, the rigidity of the polyethylene low-foam board 1 is enhanced, making it less likely to deform, making it easier to set up the expansion joint and facilitate concrete pouring.
[0026] The bottom edging iron sheet 2 wrapped around the lower end of the polyethylene low-foam board 1 is connected to the polyethylene low-foam board 1 through two first reinforcing screws 3, and the left end of the bottom edging iron sheet 2 is connected to the left edging iron sheet 4 through a first self-tapping screw 5.
[0027] The lower end of the left side edging iron sheet 4 is placed inside the bottom edging iron sheet 2 , and the left side edging iron sheet 4 is connected to the polyethylene low-foam board 1 through two second reinforcing screws 6 .
[0028] The left end of the top edging iron sheet 7 is placed inside the upper end of the left edging iron sheet 4 , and the left edging iron sheet 4 and the top edging iron sheet 7 are connected by a second self-tapping screw 8 .
[0029] The right end of the top edging iron sheet 7 is connected to the right edging iron sheet 9 by a third self-tapping screw 10 .
[0030] The upper end of the right side edge iron sheet 9 is placed in the third self-tapping screw 10 , and the right side edge iron sheet 9 is connected to the polyethylene low-foam board 1 through two third reinforcing screws 11 .
[0031] Please refer to Figure 1 , Figure 3 and Figure 5 The lower end of the right side edging iron sheet 9 is placed inside the bottom edging iron sheet 2, and the right side edging iron sheet 9 is connected to the bottom edging iron sheet 2 by a fourth self-tapping screw 12.
[0032] The hard-edged bottom edging iron sheet 2 provided at the lower end of the polyethylene low-foam board 1 can improve the rigidity of the polyethylene low-foam board 1 during concrete pouring, avoid the distortion of the polyethylene low-foam board 1 during pouring, make the filling joint form a relatively straight line, and make the expansion joint have better neatness and aesthetics.
[0033] The working principle and use process of the utility model: in specific use, the four bottom edging iron sheets 2, left edging iron sheets 4, top edging iron sheets 7 and right edging iron sheets 9 provided on the polyethylene low-foam board 1 can improve the rigidity of the polyethylene low-foam board 1, so that the polyethylene low-foam board 1 is not easily deformed when in use, and is convenient for setting up the mold. At the same time, by using the first reinforcing screw 3, the first self-tapping screw 5, the second reinforcing screw 6, the second self-tapping screw 8, the third self-tapping screw 10, the third reinforcing screw 11 and 13, while connecting the bottom edging iron sheet 2, the left edging iron sheet 4, the top edging iron sheet 7 and the right edging iron sheet 9, the connection between them and the polyethylene low-foam board 1 has better stability. When in use, through the bottom edging iron sheet 2 provided at the bottom of the polyethylene low-foam board 1, during the concrete pouring process, the expansion joint edge line and the dark line can form a straight line, and the expansion joint edge appears to be neat and beautiful.
[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A construction expansion joint, comprising a polyethylene low-foam board (1), a bottom edging iron sheet (2), a first reinforcing screw (3), a left edging iron sheet (4), a first self-tapping screw (5), a second reinforcing screw (6), a top edging iron sheet (7), a second self-tapping screw (8), a right edging iron sheet (9), a third self-tapping screw (10), a third reinforcing screw (11) and a fourth self-tapping screw (12), characterized in that: The bottom end of the polyethylene low-foam board (1) is wrapped with a bottom edging iron sheet (2), the top end of the polyethylene low-foam board (1) is wrapped with a top edging iron sheet (7), the left side of the polyethylene low-foam board (1) is wrapped with a left edging iron sheet (4), and the right side of the polyethylene low-foam board (1) is wrapped with a right edging iron sheet (9).
2. A construction expansion joint according to claim 1, characterized in that: The bottom edging iron sheet (2) wrapped around the lower end of the polyethylene low-foam board (1) is connected to the polyethylene low-foam board (1) via two first reinforcing screws (3), and the left end of the bottom edging iron sheet (2) is connected to the left edging iron sheet (4) via a first self-tapping screw (5).
3. The expansion joint for construction according to claim 1, characterized in that: The lower end of the left-side edging iron sheet (4) is placed inside the bottom edging iron sheet (2), and the left-side edging iron sheet (4) is connected to the polyethylene low-foam plate (1) via two second reinforcing screws (6).
4. The expansion joint for construction according to claim 1, characterized in that: The left end of the top edging iron sheet (7) is placed inside the upper end of the left edging iron sheet (4), and the left edging iron sheet (4) and the top edging iron sheet (7) are connected via a second self-tapping screw (8).
5. The expansion joint for construction according to claim 1, characterized in that: The right end of the top edging iron sheet (7) is connected to the right edging iron sheet (9) via a third self-tapping screw (10).
6. The expansion joint for construction according to claim 1, characterized in that: The upper end of the right-side edging iron sheet (9) is placed in the third self-tapping screw (10), and the right-side edging iron sheet (9) is connected to the polyethylene low-foam plate (1) via two third reinforcing screws (11).
7. The expansion joint for construction according to claim 1, characterized in that: The lower end of the right-side edging iron sheet (9) is placed inside the bottom edging iron sheet (2), and the right-side edging iron sheet (9) is connected to the bottom edging iron sheet (2) via a fourth self-tapping screw (12).