Windowsill concrete precast block with tongue-and-groove
By using precast concrete blocks with slopes and steps on both sides of the windowsill, the problem of cold joint leakage during secondary pouring of precast concrete blocks in the window sill was solved, achieving rapid construction and improved structural strength.
Patent Information
- Application Number
- CN202422706846.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-07
AI Technical Summary
Existing window sill capping prefabricated blocks are prone to forming cold joints during secondary pouring, leading to leakage and reduced structural strength.
A window sill concrete prefabricated block with a tongue and groove is designed. Left and right prefabricated blocks are respectively built on both sides of the window sill. Slopes and steps are set on the inner side of the prefabricated blocks to form a tongue and groove at the inner and outer interfaces. The slope and step structure is used to improve the anti-leakage performance.
Effectively prevent the formation of cold joints, increase construction speed and structural strength, enhance the waterproof performance of window sills, and avoid roughening.
Smart Images
Figure CN223459016U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of building construction, in particular to a window sill concrete prefabricated block with a rebate. BACKGROUND
[0002] When the building engineering is in the construction of the outer wall masonry structure, in order to ensure the normal operation of each process construction, the process of conventional outer wall masonry construction needs to first build the wall to the window sill position, after the window sill coping is completed, and the wall structure of the window sill coping is removed, the wall can be continued to build to the top of the floor.
[0003] The construction time of each layer of the main body structure is short, if the window is first built according to the normal process, then the wall construction is completed, the outer wall masonry and the outer plastering process will be delayed, which will prolong the construction period, and when the workers build the masonry, in order to speed up the construction progress, the window sill prefabricated block is used to carry out the coping construction of the window sill.
[0004] The current window sill coping prefabricated block has the following problems: 1, the junction of the prefabricated block and the concrete site construction is prone to form a construction cold joint during secondary pouring, which causes the construction gap to be prone to leakage. 2, the concrete surface is rough, generally in order to increase the structural strength of the concrete joint surface, the prefabricated block needs to be chiseled, but if the chiseling is not cleaned, it is more likely to form a cold joint, which reduces the structural strength.
[0005] Based on this, the utility model discloses a window sill concrete prefabricated block with a rebate to solve the above problems. INVENTION CONTENTS
[0006] The utility model discloses a window sill concrete prefabricated block with a rebate, which can increase the left prefabricated block and the right prefabricated block on both sides of the window sill top, press the top of the left and right sides of the window sill, and the construction is convenient and simple, and the inner side of the left prefabricated block and the right prefabricated block has a slope, and the slope is provided with steps with height difference, forming a rebate of the inner and outer interfaces, finally the window sill pouring is formed, the anti-leakage performance of the window sill is improved, the construction speed is improved, and the overall construction quality is improved.
[0007] The utility model discloses a window sill concrete prefabricated block with a rebate, which comprises:
[0008] The left prefabricated block and the right prefabricated block;
[0009] The left prefabricated block and the right prefabricated block are both concrete blocks with a right-angled trapezoidal front face;
[0010] The upper bottom length of the left prefabricated block is smaller than the lower bottom length, the left high slope and the left low slope are arranged on the inclined surface of the left prefabricated block, the left high slope and the left low slope are both inclined surfaces, the left high slope is attached to the rear side of the left low slope, the height of the left high slope is lower than that of the left low slope, and the inclined surface steps of the front low and the rear high are formed;
[0011] Two steel bars are embedded in the left prefabricated block, the two steel bars are parallel to each other in the same plane, and the plane where the two steel bars are located is parallel to the lower bottom surface of the left prefabricated block;
[0012] The two steel bars respectively extend out of the left prefabricated block from the inclined surfaces of the left high slope and the left low slope;
[0013] The left high slope is inside the left low slope;
[0014] The left prefabricated block and the right prefabricated block are respectively built on the left and right sides of the window sill, the inclined surface of the right prefabricated block is provided with a right high slope and a right low slope, and the right high slope is inside the right low slope;
[0015] The left prefabricated block and the right prefabricated block are mirror images of each other, and the left high slope and the left low slope on the left prefabricated block are also mirror images of the right high slope and the right low slope on the right prefabricated block.
[0016] Further, the height c of the inclined surface steps of the left high slope and the left low slope is different by 3cm.
[0017] Further, the bottom angle a of the left high slope is greater than the bottom angle b of the left low slope, and the included angles a and b are both in the range of 30°-60°.
[0018] Further, the lower bottom length s of the left high slope is smaller than the lower bottom length d of the left low slope, and the heights of the left high slope and the left low slope are the same.
[0019] The beneficial effects of the present application are as follows: 1. The device increases the inclined surfaces of different heights on the inner side of the left prefabricated block and the right prefabricated block, uses the left high slope and the left low slope, sets the steps of the outer low and the inner high on the window sill, effectively forms the water-proof interface joint, and forms the better water-proof performance of the window sill;
[0020] 2. The device increases the step surface, and the step surface is an inclined surface. The concrete window sill formed by later pouring and molding has the clamping effect, is not easy to produce cold joints, does not need to be chiseled, can effectively clamp the concrete by the step surface, and increases the structural strength. BRIEF DESCRIPTION OF DRAWINGS
[0021] The present application will be further described below with reference to the embodiments and the accompanying drawings.
[0022] Figure 1 It is an overall structure schematic diagram of the present application installed on the window sill;
[0023] Figure 2 This is a schematic diagram of the structure of the left prefabricated block of the utility model;
[0024] Figure 3 This is a schematic diagram of the right prefabricated block structure of the utility model;
[0025] Figure 4 This is a schematic diagram of the front structure of the left prefabricated block of the utility model.
[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0027] 1-left prefabricated block, 11-left high slope, 12-left low slope, 2-right prefabricated block, 21-right high slope, 22-right low slope, 3-window sill, 31-window, 4-rebar. DETAILED DESCRIPTION
[0028] See also Figures 1 to 4 As shown, the utility model provides a window sill concrete prefabricated block with a tongue and groove. In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings in the specification and specific implementation methods.
[0029] In a specific embodiment of the technical solution of the present utility model:
[0030] It includes a left prefabricated block 1 and a right prefabricated block 2;
[0031] The left precast block 1 and the right precast block 2 are both concrete blocks with a right-angled trapezoidal front surface;
[0032] The upper base length of the left prefabricated block 1 is smaller than the lower base length. A left high slope 11 and a left low slope 12 are provided on the inclined surface of the left prefabricated block 1. Both the left high slope 11 and the left low slope 12 are inclined surfaces. The left high slope 11 is attached to the rear side of the left low slope 12. The height of the left high slope 11 is lower than that of the left low slope 12, and forms an inclined step with a low front and a high back; the height c of the inclined steps of the left high slope 11 and the left low slope 12 differ by 3 cm; the bottom angle a of the left high slope 11 is greater than the bottom angle b of the left low slope 12, and the angles a and b are both in the range of 30°-60°, the lower base length s of the left high slope 11 is smaller than the lower base length d of the left low slope 12, and the heights of the left high slope 11 and the left low slope 12 are the same.
[0033] The inclined step surface forms a water-stopping groove on the slope of the left precast block 1, achieving a water-proof and anti-seepage effect. The angles and lengths are differentiated, creating a more stable structure after the concrete is poured on-site on the window sill 3. Furthermore, steps with different angles and inclinations are formed between the left high slope 11 and the left low slope 12, creating differentiated steps and achieving a better water-stopping effect.
[0034] Because the right high slope 21 and the right low slope 22 are mirror images of the left high slope 11 and the left low slope 12, the height difference of the inclined steps of the right high slope 21 and the right low slope 22 is also 3cm.
[0035] The right precast block 2 on the right side is also inclined with steps, forms a water stop groove structure, and also achieves the same waterproof effect.
[0036] The upper bottom length of the right precast block 2 is smaller than the lower bottom length, the right precast block 2 is provided with the right high slope 21 and the right low slope 22 on the inclined surface, the right high slope 21 and the right low slope 22 are both inclined, the right high slope 21 is above the right low slope 22, and forms an inclined step with the right low slope 22;
[0037] Two steel bars 4 are embedded in the left precast block 1, the two steel bars 4 are parallel to each other in the same plane, and the plane where the two steel bars 4 are located is parallel to the lower bottom surface of the left precast block 1;
[0038] The two steel bars 4 respectively extend out of the left precast block 1 from the inclined surfaces of the left high slope 11 and the left low slope 12; the two steel bars 4 on the right precast block 2 extend out from the inclined surfaces of the right high slope 21 and the right low slope 22;
[0039] The left high slope 11 is inside the left low slope 12;
[0040] And the left precast block 1 and the right precast block 2 are respectively built on the left and right sides of the window sill 3, the inclined surface of the right precast block 2 is provided with the right high slope 21 and the right low slope 22, and the right high slope 21 is inside the right low slope 22;
[0041] The left precast block 1 and the right precast block 2 are mirror images of each other, the left high slope 11 and the left low slope 12 on the left precast block 1 are mirror images of the right high slope 21 and the right low slope 22 on the right precast block 2.
[0042] In the manufacturing process, the concrete is poured into a block-shaped structure, only one side is scraped to form an inclined slope, and the left high slope 11 and the left low slope 12 need to be made on the same side of the left precast block 1, forming two different inclined surfaces, and the inclined surface angles are different, and in actual construction, there can be errors, as long as the errors are within the allowable range, because of the limitation of the construction site and the difficulty of actual operation, the slope of the left precast block 1 and the right precast block 2 can also be different, as long as the general shape and structure are the same, the most important thing is that the height of the left high slope 11 exceeds the inclined surface of the left low slope 12, and the right high slope 21 on the right precast block 2 is located outside the inclined surface of the right low slope 22, forming an inclined step.
[0043] The angle a needs to be greater than the angle b during construction, and the angle difference can also be used to control the height difference of the highest part of the inclined step as much as possible to ensure effective waterproofing.
[0044] The utility model discloses a left prefabricated block 1 and right prefabricated block 2 are placed respectively in the left and right sides of the window sill 3 and are pressed to the top, and need left high slope 11 and right high slope 21 are all in the inside of building, and left low slope 12 and right low slope 22 are all in the outside of building, and the rainwater is locked and is prevented from seepage, and the step is on the inclined plane, and the rainwater that seeps will flow outward along the slope, is more easily exported to the water flow outward, avoids the rainwater internal infiltration.
[0045] The inside and outside of the device refer to the inside and outside of the building wall, and the left and right directions refer to the left and right directions when looking at the window 31 from the outside of the wall, that is, the left and right directions as shown in the drawings. Figure 1
[0046] Although the specific embodiments of the utility model are described above, the skilled in the art should understand that the specific examples that we described are only illustrative, and are not used to limit the scope of the utility model, and the equivalent modification and change made according to the spirit of the utility model by the skilled in the art should be covered in the scope of the claims of the utility model.
Claims
1. A sill concrete precast block with a rebate, characterised in that, The utility model relates to a left prefabricated block (1) and right prefabricated block (2) are provided. The left prefabricated block (1) and right prefabricated block (2) are both concrete blocks with a right-angled trapezoidal front face. The upper base length of the left prefabricated block (1) is less than the lower base length, and a left high slope (11) and a left low slope (12) are provided on the inclined surface of the left prefabricated block (1), both of which are inclined surfaces. Two steel bars (4) are embedded in the left prefabricated block (1), and the two steel bars (4) are parallel to each other in the same plane, and the plane in which the two steel bars (4) are located is parallel to the lower base of the left prefabricated block (1). The two steel bars (4) respectively extend out of the left prefabricated block (1) from the inclined surfaces of the left high slope (11) and the left low slope (12). The left high slope (11) is inside the left low slope (12). The left prefabricated block (1) and the right prefabricated block (2) are respectively built on the left and right sides of the window sill (3), and a right high slope (21) and a right low slope (22) are provided on the inclined surface of the right prefabricated block (2), and the right high slope (21) is inside the right low slope (22). The left prefabricated block (1) and the right prefabricated block (2) are mirror images of each other, and the left high slope (11) and the left low slope (12) on the left prefabricated block (1) are also mirror images of the right high slope (21) and the right low slope (22) on the right prefabricated block (2). The height c of the inclined surface step of the left high slope (11) and the left low slope (12) differs by 3 cm.
2. A window sill precast concrete block with a rebate according to claim 1, characterized in that: The bottom angle a of the left high slope (11) is greater than the bottom angle b of the left low slope (12), and the included angles a and b are both in the range of 30°-60°.
3. A window sill precast concrete block with a rebate according to claim 1, characterized in that: The lower base length s of the left high slope (11) is less than the lower base length d of the left low slope (12), and the heights of the left high slope (11) and the left low slope (12) are the same.
4. A window sill precast concrete block with a rebate according to claim 1, characterized in that: