Fabricated building concrete composite floor slab

Abstract

An assembly type building concrete composite floor slab comprises a floor slab body and an assembly plate, the end of the floor slab body is detachably connected with the assembly plate, the assembly plate is further provided with a height-adjustable supporting assembly, and the floor slab body is supported on a concrete beam through the supporting assembly; the supporting assembly comprises supporting cams, the multiple supporting cams are arranged on the side, facing the concrete beam, of the assembling plate, rotating shafts of the multiple supporting cams are arranged at the same horizontal height and evenly distributed in the length direction of the side face of the assembling plate, and a driving mechanism used for controlling all the supporting cams to rotate synchronously is arranged in the assembling plate. Stable connection is guaranteed by the aid of the staggered connecting plugs and the bolts, convenient and accurate height fine adjustment is realized by the aid of the worm gear, the worm and the like, and universality, stability, construction convenience and cost advantages are realized by the aid of flexible production, transportation and assembly modes.

Description

Technical Field

[0001] The present invention relates to the field of assembled floor slabs, in particular to an assembled building concrete composite floor slab. Background Art

[0002] Precast composite floor slabs are an important building component in existing construction. Precast floor slabs usually refer to precast concrete thin slabs as permanent formwork at the bottom, which are superimposed on the cast-in-place layer above to form an assembled integral floor slab. This type of composite floor slab combines many advantages of cast-in-place floor slabs.

[0003] However, existing precast floor slabs are typically hoisted onto concrete beams during installation. When the installation height of a precast floor slab needs to be adjusted, existing methods rely on hoisting and repositioning the slab. This is not only extremely inconvenient, but also makes it difficult to make subtle adjustments to the height of the precast floor slab, making it difficult to meet the high-precision installation requirements.

[0004] For example, the patent application with publication number CN108661224B proposes a prefabricated concrete composite floor slab with adjustable height; it includes component A2, and by connecting the two sides of the original composite floor slab to component A2 at the construction site, the height of the prefabricated floor slab can be adjusted through component A2. Although this solution solves the problem of adjusting the height of the prefabricated floor slab, when actually adjusting the height of component A2, it is necessary to operate multiple nuts one by one, and the operation process is cumbersome and time-consuming. Moreover, since multiple nuts need to be operated, it is difficult to ensure that the adjustment degree of each nut is consistent during the actual operation process, which can easily lead to the unstable placement of the composite floor slab. Once this happens, the nuts need to be repeatedly adjusted and confirmed, making the entire adjustment process less efficient and unable to meet the requirements for efficient operation in construction. Summary of the Invention

[0005] The present invention solves the deficiencies of the prior art and provides an assembled building concrete composite floor slab that is convenient for fine adjustment of height and has high adjustment efficiency.

[0006] The technical solution adopted by the present invention to solve the technical problem is:

[0007] A prefabricated concrete composite floor slab comprises a floor slab body and an assembly plate, wherein the assembly plate is detachably connected to the end of the floor slab body, and the assembly plate is provided with a variety of different specifications according to the required length of the composite floor slab; the assembly plate is also installed with a height-adjustable support assembly, and the floor slab body is supported on the concrete beam by the support assembly; the support assembly includes a support cam, and a plurality of support cams are provided on the side of the assembly plate facing the concrete beam, and the rotating shafts of the plurality of support cams are arranged at the same horizontal height and are evenly arranged along the length direction of the side surface of the assembly plate, and a drive mechanism for controlling the synchronous rotation of all the support cams is provided in the assembly plate.

[0008] In this embodiment, the floor slab body includes a first casting frame with an opening at the top, and the assembly plate includes a second casting frame with an opening at the top. The side plates on the connecting sides of the first casting frame and the second casting frame are respectively the first connecting plate and the second connecting plate. Matching concave and convex structures are respectively provided on the opposite sides of the first connecting plate and the second connecting plate to form a staggered plug joint; the first connecting plate and the second connecting plate are respectively provided with a plurality of groups of bolt holes arranged along the length direction, and bolts are installed in the bolt holes. After the first connecting plate and the second connecting plate are plugged into each other through the staggered plug joint, they are fastened by bolts.

[0009] In this embodiment, the driving mechanism includes a worm gear mechanism and a rotating shaft installed in the second casting frame. The worm gear mechanism includes a worm wheel and a worm. The rotating shaft is rotatably assembled on the second casting frame. One end of the rotating shaft extends out of the second casting frame and is coaxially fixed with the support cam. A worm gear is coaxially fixed on the other end. A worm is also rotatably assembled in the second casting frame. The worm is engaged with the worm wheel. One end of the worm is exposed from one side of the second casting frame and is flush with the side of the second casting frame. A screw groove is provided on the exposed end of the worm for facilitating the rotation of the worm. Furthermore, the screw groove is a hexagonal hole, and the worm can be driven to rotate using a hexagonal wrench.

[0010] In this embodiment, a guide rod is fixed on the first connecting plate at a position corresponding to each rotating shaft, a through hole corresponding to the position of the guide rod is provided on the second connecting plate, and a guide hole is provided at the end of the rotating shaft that matches the guide rod and is coaxially arranged. After the first casting frame is connected to the second casting frame, the guide rod is inserted into the guide hole of the rotating shaft, and the guide rod is slidably connected to the inner wall of the guide hole.

[0011] In this embodiment, the second casting frame is further provided with a scale near the exposed end of the worm.

[0012] In this embodiment, the bottoms of the first pouring frame and the second pouring frame are flat, and the depths of the first pouring frame and the second pouring frame match the designed thickness of the composite floor slab.

[0013] In this embodiment, the second casting frame is further provided with positioning rods at both ends of the side where the supporting cam is located, and the horizontal height of the positioning rods is higher than the lowest supporting position of the supporting cam.

[0014] In this embodiment, a support block is further fixedly mounted on the positioning rod, and the bottom surface of the support block is a plane.

[0015] Due to the above structure, the present invention has the following advantages:

[0016] 1. The composite floor of the present invention is composed of a floor main body and an assembly plate. The assembly plate can be set in a variety of different specifications according to the required length of the composite floor. By selecting assembly plates of different specifications, composite floors of different lengths can be adapted, so that the composite floor can be produced in a modular manner, which greatly improves the versatility and adaptability of the product and meets the diverse needs of construction.

[0017] 2. The side plates on the side where the first casting frame of the floor main body is connected to the second casting frame of the assembly plate are respectively the first connecting plate and the second connecting plate, on which relative concave and convex structures are provided to form staggered plug joints, and correspondingly there are multiple groups of bolt holes arranged along the length direction. The staggered plug joints are initially positioned by bolt tightening, and the bolts are further reinforced. This double connection structure ensures the stability of the connection between the first casting frame and the second casting frame, ensures the reliability of the overall structure of the composite floor, and meets the safety requirements of the building structure.

[0018] 3. The assembly plate of the present invention is also equipped with a height-adjustable support component, which includes a worm gear mechanism and a support cam. The rotating shafts of multiple support cams are arranged at the same horizontal height and are evenly arranged along the length direction of the side of the assembly plate. They are connected through the worm gear mechanism. When the worm is rotated, the worm gear mechanism can make all the worm wheels rotate at the same time, thereby driving all the support cams to rotate at the same time, achieving the purpose of driving all the support cams to be adjusted synchronously by one component, greatly improving the adjustment efficiency. In addition, the self-locking principle of the worm gear mechanism can be used to lock the adjusted position of the support cam, avoiding displacement after adjustment, ensuring the stability of the composite floor after height adjustment, and improving construction efficiency and quality.

[0019] 4. The second pouring frame features a scale on the exposed end of the worm, allowing operators to visually understand the angle of worm rotation. When adjusting the support components on both sides of the composite floor, the scale ensures consistent adjustments on both sides, effectively avoiding issues with unstable placement of the composite floor due to inconsistent adjustments and enabling precise height adjustments.

[0020] 5. The second casting frame features positioning rods at both ends of one side of the support cam. To fine-tune the composite floor slab elevation, a pry bar is placed between the positioning rod and the concrete beam. Using the lever principle, the positioning rod is used to pry up one side of the composite floor slab, freeing the support cam on that side from the concrete beam for easier adjustment. The support block fixed to the positioning rod has a flat bottom surface, which increases the support surface when connected to the pry bar, improves stability during the prying process, reduces operational difficulty, and makes height fine-tuning more convenient and safer.

[0021] 6. The first and second casting frames, which form the main body of the floor slab and the assembly plate, can be manufactured separately in the factory. They can be transported to the site for assembly separately or assembled in the factory before being transported to the site for assembly. This flexible production, transportation, and assembly method fully considers the actual conditions and varying construction conditions of the construction site, facilitating construction arrangements, reducing transportation and construction costs, and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a perspective view of the present invention.

[0023] Figure 2 It is a top view of the present invention.

[0024] Figure 3 for Figure 2 Cross-sectional view at AA.

[0025] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part B.

[0026] Figure 5 This is a usage state diagram of the present invention.

[0027] In the accompanying drawings, 1. Floor slab body; 2. Assembly plate; 3. Positioning rod; 4. Rotation axis; 5. Support cam; 6. Second casting frame; 7. First casting frame; 8. First connecting plate; 9. Second connecting plate; 10. Bolt; 11. Guide rod; 12. Worm gear; 13. Worm; 14. Pry bar; 15. Support block. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] like Figure 1-Figure 5 As shown, a prefabricated concrete composite floor slab for a building comprises a floor slab body 1 and an assembly plate 2. The assembly plates 2 are detachably connected to opposite ends of the floor slab body 1. The assembly plates 2 are provided in a variety of different specifications according to the required length of the composite floor slab. By selecting assembly plates 2 of different specifications, composite floor slabs of different lengths can be adapted.

[0030] The floor slab body 1 includes a first pouring frame 7 with an opening at the top, and the assembly plate 2 includes a second pouring frame 6 with an opening at the top. The bottoms of the first pouring frame 7 and the second pouring frame 6 are flat, and the depths of the first pouring frame 7 and the second pouring frame 6 are based on the required thickness of the floor slab body 1;

[0031] The side plates on the side where the first pouring frame 7 and the second pouring frame 6 are connected are respectively a first connecting plate 8 and a second connecting plate 9. The first connecting plate 8 and the second connecting plate 9 are respectively provided with matching concave and convex structures on the opposite sides thereof to form a staggered plug joint; the first connecting plate 8 and the second connecting plate 9 are respectively provided with a plurality of groups of bolt holes arranged along the length direction, and bolts are installed in the bolt holes. After the first connecting plate 8 and the second connecting plate 9 are connected to each other through the staggered plug joint, they are fastened by bolts;

[0032] like Figure 3 、 4As shown, further, a height-adjustable support assembly is also installed on the assembly plate 2, and the support assembly includes a worm gear mechanism, a guide rod 11, a rotating shaft 4 and a supporting cam 5. A plurality of supporting cams 5 are provided on the side of the second casting frame 6 facing the concrete beam, and the rotating shafts of the plurality of supporting cams 5 are arranged at the same horizontal height and are evenly arranged along the length direction of the side of the assembly plate 2. A worm gear mechanism and a rotating shaft 4 matching the supporting cam 5 are installed in the second casting frame 6, and the rotating shaft 4 is rotatably assembled on the second casting frame 6. One end of the rotating shaft 4 extends out of the second casting frame 6 and is coaxially fixed with the supporting cam 5, and a worm wheel of the worm gear mechanism is coaxially fixed on the other end. A worm equipped with a worm gear mechanism is also rotatably assembled in the second casting frame 6, and the worm is meshed with the worm wheel. One end of the worm is exposed from one side of the second casting frame 6 and is flush with the side surface of the second casting frame 6. The exposed end of the worm is provided with an inner hexagonal hole for facilitating the rotation of the worm, and the worm 13 can be driven to rotate using a hexagonal wrench;

[0033] A guide rod 11 is fixed on the first connecting plate 8 at a position corresponding to each rotating shaft 4. A through hole corresponding to the position of the guide rod 11 is provided on the second connecting plate 9. A guide hole matching the guide rod 11 is coaxially provided at the end of the rotating shaft 4. After the first casting frame 7 is connected to the second casting frame 6, the guide rod 11 is inserted into the guide hole of the rotating shaft 4. The guide rod 11 is slidably connected to the inner wall of the guide hole, thereby ensuring the stable rotation of the rotating shaft 4.

[0034] In the initial state of adjustment, all supporting cams 5 are in the same position; when the worm is rotated, the worm gear mechanism is utilized to make all worm wheels rotate at the same time, thereby driving all supporting cams 5 to rotate at the same time, and then the self-locking principle of the worm gear mechanism is utilized to lock the adjusted position of the supporting cam 5. When in use, the two ends of the composite floor are supported on the concrete beams on both sides through the supporting components. By adjusting the supporting components, the supporting cam 5 is rotated, and the change in radius when the supporting cam 5 rotates is utilized to achieve fine-tuning of the elevation of the composite floor.

[0035] Furthermore, the second casting frame 6 is provided with a scale on one side of the exposed end of the worm, through which the angle of rotation of the worm can be understood, thereby ensuring the consistency of adjustment when adjusting the support components on both sides of the composite floor.

[0036] like Figure 1 、 5 As shown, the second pouring frame 6 of the present application is further provided with positioning rods 3 at both ends of the side where the support cam 5 is located, and the horizontal height of the positioning rods 3 is higher than the lowest support position of the support cam 5;

[0037] like Figure 5As shown, when the elevation of the composite floor needs to be fine-tuned, the pry bar 14 is first placed between the positioning rod 3 and the concrete beam. The pry bar 14 uses the lever principle to pry up one side of the composite floor through the positioning rod 3, so that the support cam 5 on this side is separated from the concrete beam. Then, the worm gear is rotated with the hexagonal wrench to adjust the support cam 5. After the adjustment is completed, the pry bar is released, and the same operation is performed on the other side of the composite floor to complete the fine adjustment of the composite floor elevation.

[0038] Furthermore, a support block 15 is fixed to the positioning rod 3. The bottom surface of the support block 15 is flat, which increases the support surface when connected to the pry bar 14 and improves the stability when prying;

[0039] The specific construction method of this application is as follows:

[0040] The first pouring frame 7 and the second pouring frame 6 are produced separately in the factory. They can be transported separately to the site for assembly, or they can be assembled in the factory and then transported to the site for assembly.

[0041] During assembly, first connect the first pouring frame 7 and the second pouring frame 6 to each other through the staggered plug joints. After the first pouring frame 7 is connected to the second pouring frame 6, the guide rod 11 is just inserted into the guide hole of the rotating shaft 4, and then the bolts are passed through the bolt holes to fasten the first pouring frame 7 and the second pouring frame 6. In this way, the connection between the first pouring frame 7 and the second pouring frame 6 is completed. The first pouring frame 7 and the second pouring frame 6 with the above connection are hoisted and placed on the concrete beam, so that the floor slab body is supported on the concrete beam through the support assembly; then, according to the design, the first pouring frame 7 and the second pouring frame are measured by measuring equipment. 6; if the elevation needs to be fine-tuned, first place the pry bar 14 between the positioning rod 3 and the concrete beam, and use the lever principle of the pry bar 14 to pry up one side of the composite floor slab through the positioning rod 3, so that the support cam 5 on this side is separated from the concrete beam, and then the worm gear is rotated by the hexagonal wrench to adjust the support cam 5. After the adjustment is completed, release the pry bar, and then perform the same operation on the other side of the composite floor slab to complete the fine-tuning of the composite floor slab elevation; after completing the fine-tuning, finally lay the steel truss in the first casting frame 7, and then pour concrete into the first casting frame 7 and the second casting frame 6 to complete the cast-in-place of the composite floor slab.

[0042] The above-mentioned specific embodiments are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific embodiments. Any prefabricated building concrete composite floor slab that complies with the claims of the present invention and any appropriate changes or modifications made thereto by ordinary technicians in the corresponding technical field shall fall within the patent protection scope of the present invention.

Claims

1. A prefabricated concrete composite floor slab, characterized by: The invention comprises a floor slab body (1) and an assembly plate (2), wherein the assembly plate (2) is detachably connected to the end of the floor slab body (1), and a height-adjustable support assembly is also installed on the assembly plate (2), and the floor slab body (1) is supported on the concrete beam through the support assembly; the support assembly comprises a support cam (5), and a plurality of support cams (5) are provided on the side of the assembly plate (2) facing the concrete beam, and the rotating shafts of the plurality of support cams (5) are arranged at the same horizontal height and are evenly arranged along the length direction of the side of the assembly plate (2), and a driving mechanism for controlling the synchronous rotation of all the support cams (5) is provided in the assembly plate (2).

2. The prefabricated building concrete composite floor according to claim 1, characterized in that: The floor slab body (1) includes a first casting frame (7) with an opening at the top, and the assembly plate (2) includes a second casting frame (6) with an opening at the top. The side plates on the connection sides of the first casting frame (7) and the second casting frame (6) are respectively a first connecting plate (8) and a second connecting plate (9). The first connecting plate (8) and the second connecting plate (9) are respectively provided with matching concave and convex structures on the opposite sides to form a staggered plug-in joint. The first connecting plate (8) and the second connecting plate (9) are also provided with a plurality of groups of bolt holes arranged along the length direction, and bolts (10) are installed in the bolt holes. After the first connecting plate (8) and the second connecting plate (9) are plugged into each other through the staggered plug-in joint, they are fastened by the bolts (10).

3. The prefabricated building concrete composite floor according to claim 2, characterized in that: The driving mechanism comprises a worm gear mechanism and a rotating shaft (4) installed in the second casting frame (6). The worm gear mechanism comprises a worm wheel (12) and a worm (13). The rotating shaft (4) is rotatably assembled on the second casting frame (6). One end of the rotating shaft (4) extends out of the second casting frame (6) and is coaxially fixed with the support cam (5). The other end is coaxially fixed with the worm wheel (12). The second casting frame (6) is also rotatably assembled with a worm wheel (13). The worm wheel (13) is engaged with the worm wheel (12). One end of the worm wheel (13) is exposed from one side of the second casting frame (6) and is flush with the side surface of the second casting frame (6). A screw groove is provided on the exposed end of the worm wheel (13) for facilitating the rotation of the worm wheel (13).

4. The prefabricated building concrete composite floor according to claim 3, characterized in that: The second pouring frame (6) is also provided with a scale on the exposed end near the worm (13).

5. The prefabricated building concrete composite floor according to claim 3, characterized in that: A guide rod (11) is fixed on the first connecting plate (8) at a position corresponding to each rotating shaft (4); a through hole corresponding to the position of the guide rod (11) is provided on the second connecting plate (9); a guide hole matching the guide rod (11) and arranged coaxially is provided at the end of the rotating shaft (4); after the first casting frame (7) is connected to the second casting frame (6), the guide rod (11) is inserted into the guide hole of the rotating shaft (4), and the guide rod (11) is slidably connected to the inner wall of the guide hole.

6. The prefabricated building concrete composite floor according to claim 1, characterized in that: The bottoms of the first pouring frame (7) and the second pouring frame (6) are flat, and the depths of the first pouring frame (7) and the second pouring frame (6) match the designed thickness of the composite floor slab.

7. The prefabricated building concrete composite floor according to any one of claims 2 to 6, characterized in that: The second pouring frame (6) is further provided with positioning rods (3) at both ends of the side where the supporting cam (5) is located, and the horizontal height of the positioning rods (3) is higher than the lowest supporting position of the supporting cam (5).

8. The prefabricated building concrete composite floor according to claim 7, characterized in that: A support block (15) is also fixedly mounted on the positioning rod (3), and the bottom surface of the support block (15) is a plane.

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