Prefabricated bottom plate structure of concrete laminated slab
By setting positioning grooves and limiting protrusions at the top and bottom four corners of the precast concrete composite slab base plate, the problem of the support block shifting or falling off during transportation is solved, thus improving transportation stability.
Patent Information
- Application Number
- CN202520337041.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-02-28
AI Technical Summary
During transportation, existing precast concrete composite slab base plates are prone to shifting or falling off due to the lack of effective restraint by the support blocks, resulting in slab tilting and affecting stability.
A first positioning groove and a second positioning groove are set at the top and bottom four corners of the precast concrete composite slab base plate, and a limiting protrusion is set on the support block. The support block is fixed by embedding the limiting groove to prevent displacement.
It effectively prevents the support blocks from shifting or falling off during transportation, thus improving the transportation stability of the precast concrete composite slab base plate.
Smart Images
Figure CN223853677U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of precast concrete composite slab base plate, specifically relating to a precast concrete composite slab base plate structure. Background Technology
[0002] Precast concrete composite slabs are an important component in prefabricated buildings. They are typically prefabricated in a factory and used on-site in conjunction with cast-in-place concrete layers. They are mainly used for floor slabs, wall panels, and other structures, offering advantages such as fast construction speed, controllable quality, and environmental friendliness.
[0003] Currently, existing precast concrete composite slabs are typically stacked during transportation. To prevent damage to the bottom slabs, support blocks are placed between them to support the four corners. However, bumps are inevitable during transportation, and the support blocks at the corners may shift or fall off due to a lack of proper positioning. This can cause the stacked precast concrete composite slabs to tilt, affecting overall stability. Utility Model Content
[0004] The purpose of this utility model is to provide a precast concrete composite slab base structure, which aims to solve the problem that existing precast concrete composite slab bases are usually stacked during transportation. In order to prevent damage to the precast concrete composite slab bases at the bottom of the stack, support blocks are placed between two precast concrete composite slabs to support the four corners. However, during transportation, bumps are inevitable. At this time, the support blocks at the four corners are not well restrained, so they may shift or fall off during the bumps, causing the stacked precast concrete composite slab bases to tilt and affecting the overall stability.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a precast concrete composite slab base structure, comprising a precast concrete composite slab base body, wherein a steel truss is provided on the top of the precast concrete composite slab base body, longitudinal steel bars are passed through the inner side of the precast concrete composite slab base body, a first positioning groove is provided on the top of the precast concrete composite slab base body, and a second positioning groove is provided on the bottom of the precast concrete composite slab base body, wherein support blocks may be provided inside the first positioning groove and the second positioning groove.
[0006] As a preferred embodiment of the precast base plate structure of the concrete composite slab of this utility model, the ends of the first positioning groove and the second positioning groove are chamfered at 45°.
[0007] As a preferred embodiment of the precast concrete composite slab base structure of this utility model, four first positioning grooves are provided, and the four first positioning grooves are located at the four corners of the top of the precast concrete composite slab base body.
[0008] As a preferred embodiment of the precast concrete composite slab base structure of this utility model, four second positioning grooves are provided, and the four second positioning grooves are located at the four corners of the bottom of the precast concrete composite slab base body.
[0009] As a preferred embodiment of the precast concrete composite slab base structure of this utility model, the first positioning groove and the second positioning groove are provided with limiting grooves inside, and the outer wall of the support block is provided with limiting protrusions.
[0010] As a preferred embodiment of the precast base plate structure of the concrete composite slab of this utility model, the limiting protrusion is located inside the limiting groove.
[0011] As a preferred embodiment of the precast base plate structure of the concrete composite slab of this utility model, the dimensions of the limiting groove and the limiting protrusion are adapted to each other.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] By setting the first positioning groove and the second positioning groove, during the process of stacking the precast concrete composite slab base plate, the support block is embedded in the first positioning groove and the second positioning groove, and the limiting protrusion on the outer wall of the support block enters the limiting groove, thereby effectively preventing the support block from shifting and falling off during transportation bumps, thus improving transportation stability. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0015] Figure 1 This is a schematic diagram of the stacked structure from the front view of this utility model;
[0016] Figure 2 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 3 This is a bottom view of the structure of this utility model;
[0018] Figure 4 This is an enlarged structural diagram of the present invention.
[0019] In the figure: 1. Precast concrete composite slab base plate body; 2. Steel truss; 3. Longitudinal reinforcement; 4. First positioning groove; 5. Second positioning groove; 6. Support block; 7. Limiting groove; 8. Limiting protrusion. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1-4 The present invention provides the following technical solution: a precast concrete composite slab base structure, including a precast concrete composite slab body 1, a steel truss 2 is provided on the top of the precast concrete composite slab body 1, longitudinal steel bars 3 are passed through the inner side of the precast concrete composite slab body 1, a first positioning groove 4 is provided on the top of the precast concrete composite slab body 1, a second positioning groove 5 is provided on the bottom of the precast concrete composite slab body 1, and a support block 6 can be provided inside the first positioning groove 4 and the second positioning groove 5.
[0022] It is worth noting that, in the stacking process of the existing precast concrete composite slab base plate body 1, a pad is first placed at the four corners of the top of the precast concrete composite slab base plate body 1, and then the precast concrete composite slab base plate body 1 is placed on the pad to achieve stacking support.
[0023] Preferably, the ends of the first positioning groove 4 and the second positioning groove 5 are chamfered at 45°. There are four first positioning grooves 4, and the four first positioning grooves 4 are located at the top four corners of the precast concrete composite slab body 1. There are four second positioning grooves 5, and the four second positioning grooves 5 are located at the bottom four corners of the precast concrete composite slab body 1.
[0024] In practical use, by setting the first positioning groove 4 and the second positioning groove 5, during the process of stacking the precast concrete composite slab base plate body 1, the support block 6 is embedded in the interior of the first positioning groove 4 and the second positioning groove 5, and the limiting protrusion 8 on the outer wall of the support block 6 enters the limiting groove 7, thereby effectively preventing the support block 6 from shifting and falling off during the transportation bumps, thus improving the transportation stability.
[0025] Preferably, a limiting groove 7 is formed inside the first positioning groove 4 and the second positioning groove 5, and a limiting protrusion 8 is provided on the outer wall of the support block 6. The limiting protrusion 8 is located inside the limiting groove 7, and the dimensions between the limiting groove 7 and the limiting protrusion 8 are compatible.
[0026] In practical use, by setting the limiting groove 7 and the limiting protrusion 8, when the top and bottom of the support block 6 enter the first positioning groove 4 and the second positioning groove 5 respectively, the limiting protrusion 8 on the outer wall of the support block 6 will be embedded in the limiting groove 7, thereby further improving the stability of the precast concrete composite slab body 1 when stacked.
[0027] Working principle: First, a support block 6 is placed in each of the four first positioning grooves 4 on the top of the precast concrete composite slab body 1. Then, another precast concrete composite slab body 1 is stacked on top of it, and the top of the support block 6 is inserted into the second positioning groove 5 at the bottom of the stacked precast concrete composite slab body 1. The stacking is repeated in the above manner. With the setting of the limiting groove 7 and the limiting protrusion 8, when the top and bottom of the support block 6 are inserted into the first positioning groove 4 and the second positioning groove 5 respectively, the limiting protrusion 8 on the outer wall of the support block 6 will be embedded in the limiting groove 7. This can effectively prevent the support block 6 from shifting and falling during transportation, thereby improving the transportation stability.
[0028] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A prefabricated floor structure of concrete composite slabs, comprising a prefabricated floor body (1) of concrete composite slabs, characterized in that: The top of the prefabricated bottom plate body (1) is provided with a steel bar truss (2), the inside of the prefabricated bottom plate body (1) is penetrated by longitudinal steel bars (3), the top of the prefabricated bottom plate body (1) is provided with first positioning grooves (4), the bottom of the prefabricated bottom plate body (1) is provided with second positioning grooves (5), and the inside of the first positioning grooves (4) and the second positioning grooves (5) is provided with supporting blocks (6).
2. A precast concrete composite slab structure according to claim 1, wherein: The end of the first positioning groove (4) and the second positioning groove (5) is a 45° chamfer.
3. A precast concrete composite slab structure according to claim 2, wherein: The first positioning groove (4) is provided with four first positioning grooves (4), and the four first positioning grooves (4) are located at the four corners of the top of the prefabricated bottom plate body (1).
4. The precast concrete composite slab structure of claim 2, wherein: The second positioning groove (5) is provided with four second positioning grooves (5), and the four second positioning grooves (5) are located at the four corners of the bottom of the prefabricated bottom plate body (1).
5. The precast concrete composite slab structure of claim 1, wherein: The inside of the first positioning groove (4) and the second positioning groove (5) is provided with a limiting groove (7), and the outer wall of the supporting block (6) is provided with a limiting protrusion (8).
6. A precast concrete composite slab structure according to claim 5, wherein: The limiting protrusion (8) is located inside the limiting groove (7).
7. A precast concrete composite slab structure according to claim 5, wherein: The size between the limiting groove (7) and the limiting protrusion (8) is matched.