A precast concrete beam slab

Abstract

The utility model discloses a kind of prefabricated concrete beam plates, including substrate, heat preservation layer, fireproof layer and rotating assembly, the substrate upper surface is equipped with heat preservation layer, the heat preservation layer upper surface is equipped with fireproof layer, rotating assembly is equipped in heat preservation layer and fireproof layer inside, the rotating assembly includes threaded rod, the middle part fixedly connected with rotating block in threaded rod outer wall, the left and right sides of rotating block are equipped with limit block, installation groove is set in the corresponding place of heat preservation layer and fireproof layer inner wall and threaded rod;The utility model is through the setting rotating assembly, so that staff can rotate rotating block when carrying out splicing construction to beam plate, thereby realize the firm connection to beam plate, wherein the setting of wedge block and wedge groove, when adjacent beam plate splicing is not needed repeatedly calibration, greatly improve construction efficiency, while the mechanical engagement of mortise and tenon structure, threaded rod and wedge block are screw thread connection, improve the stress intensity of beam plate.

Description

Technical Field

[0001] This utility model relates to the field of precast beam and slab technology, specifically to a precast concrete beam and slab. Background Technology

[0002] Beams and slabs are the combination of interacting beams and slabs in a floor system. The reinforced concrete cast-in-place beam and slab system is currently the most widely used and applicable floor system, and its safety and economy have a great impact on buildings.

[0003] Traditional precast beam and slab installation relies on full-span scaffolding or temporary supports, which not only consumes a lot of materials but also takes a long time to erect and dismantle. Furthermore, existing beam and slab splicing mostly adopts the flat plate butt joint plus grouting mode, which lacks a precise positioning structure. On-site splicing requires repeated adjustments, which still easily leads to misalignment of the joints. Moreover, after splicing, shear force is transferred only by grout, without the mechanical interlocking effect of tenon and mortise structure. In long-term use, cracks are easily caused at the splice due to joint leakage and aging of grout, affecting the overall durability.

[0004] Against this backdrop, there is an urgent need for a precast beam-slab structure that can simultaneously solve integrated support and precise splicing, in order to meet the core requirements of modern engineering for efficiency, safety and durability. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing a precast concrete beam-slab structure that achieves integrated support and precise splicing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precast concrete beam slab, comprising a base plate, an insulation layer, a fireproof layer, and a rotating assembly. An insulation layer is provided above the outer surface of the base plate, and a fireproof layer is provided above the outer surface of the insulation layer. A rotating assembly is provided inside the insulation layer and the fireproof layer. The rotating assembly includes a threaded rod, a rotating block is fixedly connected to the middle of the outer wall of the threaded rod, and limiting blocks are provided on both sides of the rotating block. An installation groove is formed on the inner wall of the insulation layer and the fireproof layer corresponding to the threaded rod. A through groove is formed on the outer wall of the fireproof layer and the insulation layer corresponding to the rotating block. A wedge-shaped block is fixedly connected to the right side of the outer wall of the insulation layer and the fireproof layer.

[0007] Preferably, the threaded rod is threadedly connected to the limiting block, and the limiting block is fixedly connected to the inner wall of the insulation layer and the fireproof layer respectively.

[0008] Preferably, the outer walls of the insulation layer and fireproof layer are provided with wedge-shaped grooves corresponding to the wedge-shaped block, and the outer walls of the wedge-shaped block are provided with fixing holes corresponding to the threaded rod.

[0009] Preferably, a positioning block is fixedly connected to the top of the substrate and the outer wall of the insulation layer, and a positioning groove is provided at the bottom of the outer wall of the insulation layer and the fireproof layer corresponding to the positioning block.

[0010] Preferably, a tension plate is fixedly connected to the bottom of the outer wall of the substrate, and the tension plate has transverse ribs on the left and right sides of its outer wall.

[0011] Preferably, the transverse rib is fixedly connected to the bottom of the outer wall of the substrate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By setting up a rotating component, workers can rotate the rotating block during beam and slab splicing construction, thereby achieving a firm connection between the beams and slabs. The wedge block and wedge groove eliminate the need for repeated calibration when splicing adjacent beams and slabs, greatly improving construction efficiency. While the mortise and tenon structure mechanically interlocks, the threaded rod and the wedge block are threadedly connected, improving the load-bearing strength of the beams and slabs.

[0014] 2. By setting up positioning blocks, positioning grooves, tension plates, and transverse ribs, the positioning blocks and positioning grooves fit together during construction, forming a mechanical interlock. This directly restricts the horizontal and vertical relative displacement of the two layers of beams and slabs, preventing inter-layer misalignment under load and ensuring that the load is shared by the two layers of beams and slabs, effectively improving the load-bearing capacity. The tension plates can be used directly as a support structure without the need for a full-span scaffold. Only simple supports need to be set at the ends of the tension plates to meet the installation and use load requirements. Attached Figure Description

[0015] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a first-view schematic diagram of the separation structure of the substrate, insulation layer and fireproof layer in this utility model;

[0018] Figure 4 This is a schematic diagram of the second-view separation structure of the substrate, insulation layer and fireproof layer in this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the fireproof layer in this utility model.

[0020] In the diagram: 1. Base plate; 2. Insulation layer; 3. Fireproof layer; 401. Threaded rod; 402. Rotating block; 403. Limiting block; 404. Mounting groove; 405. Through groove; 406. Wedge block; 5. Fixing hole; 6. Wedge groove; 7. Positioning block; 8. Positioning groove; 9. Tension plate; 10. Horizontal rib. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , Figure 2 and Figure 5 This utility model provides a technical solution: a precast concrete beam slab, including a base plate 1, an insulation layer 2, a fireproof layer 3, and a rotating assembly. The insulation layer 2 is provided above the outer surface of the base plate 1, and the fireproof layer 3 is provided above the outer surface of the insulation layer 2. A rotating assembly is provided inside the insulation layer 2 and the fireproof layer 3. The rotating assembly includes a threaded rod 401, a rotating block 402 fixedly connected to the middle of the outer wall of the threaded rod 401, and limiting blocks 403 on both sides of the rotating block 402. Installation grooves 404 are formed on the inner walls of the insulation layer 2 and the fireproof layer 3 corresponding to the threaded rod 401. Through grooves 405 are formed on the outer walls of the fireproof layer 3 and the insulation layer 2 corresponding to the rotating block 402. A wedge-shaped block 406 is fixedly connected to the right side of the outer walls of the insulation layer 2 and the fireproof layer 3. The threaded rod 401 is threadedly connected to the limiting block 403. The limiting block 403 is fixedly connected to the inner wall of the insulation layer 2 and the fireproof layer 3 respectively. The outer wall of the insulation layer 2 and the fireproof layer 3 is provided with a wedge groove 6 corresponding to the wedge block 406. The outer wall of the wedge block 406 is provided with a fixing hole 5 corresponding to the threaded rod 401. By setting the rotating component, the workers can rotate the rotating block 402 when splicing the beam and slab, thereby achieving a firm connection of the beam and slab. The setting of the wedge block 406 and the wedge groove 6 eliminates the need for repeated calibration when splicing adjacent beams and slabs, greatly improving construction efficiency. While the mortise and tenon structure mechanically interlocks, the threaded rod 401 is threadedly connected to the wedge block 406, which improves the load-bearing strength of the beam and slab.

[0023] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4A positioning block 7 is fixedly connected to the top of the outer wall of the base plate 1 and the insulation layer 2. A positioning groove 8 is opened at the bottom of the outer wall of the insulation layer 2 and the fireproof layer 3 corresponding to the positioning block 7. A tension plate 9 is fixedly connected to the bottom of the outer wall of the base plate 1. Horizontal ribs 10 are provided on the left and right sides of the outer wall of the tension plate 9. The horizontal ribs 10 are fixedly connected to the bottom of the outer wall of the base plate 1. By setting the positioning block 7, the positioning groove 8, the tension plate 9 and the horizontal ribs 10, the positioning block 7 and the positioning groove 8 are matched with each other during construction to form a mechanical interlock, which directly restricts the horizontal and vertical relative displacement of the two beams and slabs, avoids interlayer misalignment under load, and ensures that the load is borne by the two beams and slabs, effectively improving the load-bearing capacity. The tension plate 9 can be directly used as a support structure without the need to erect a full-span scaffold. Only a simple support needs to be set at the end of the tension plate 9 to meet the installation and use load requirements.

[0024] Working principle: When the workers need to install the beams and slabs, they control one beam and slab to move to the appropriate position so that the wedge block 406 is engaged with the wedge groove 6. Then, they rotate the rotating block 402 to control the threaded rod 401 to rotate. At this time, the threaded rod 401 rotates inside the limiting block 403. When the threaded rod 401 comes into the fixing hole 5, the wedge block 406 is threadedly connected with the threaded rod 401. At the same time, the two beams and slabs are tightly spliced. When the beams and slabs are erected, the base plate 1 is erected in the construction position. Then, the insulation layer 2 and the fireproof layer 3 are stacked in sequence. At this time, the positioning block 7 is engaged with the positioning groove 8.

[0025] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0026] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precast concrete beam-slab, characterized in that: The device includes a substrate (1), an insulation layer (2), a fireproof layer (3), and a rotating assembly. The insulation layer (2) is provided above the outer surface of the substrate (1), and the fireproof layer (3) is provided above the outer surface of the insulation layer (2). The rotating assembly is provided inside the insulation layer (2) and the fireproof layer (3). The rotating assembly includes a threaded rod (401). A rotating block (402) is fixedly connected to the middle of the outer wall of the threaded rod (401). Limiting blocks (403) are provided on the left and right sides of the rotating block (402). An installation groove (404) is opened on the inner wall of the insulation layer (2) and the fireproof layer (3) corresponding to the threaded rod (401). A through groove (405) is opened on the outer wall of the fireproof layer (3) and the insulation layer (2) corresponding to the rotating block (402). A wedge block (406) is fixedly connected to the right side of the outer wall of the insulation layer (2) and the fireproof layer (3).

2. The precast concrete beam-slab according to claim 1, characterized in that: The threaded rod (401) is threadedly connected to the limiting block (403), and the limiting block (403) is fixedly connected to the inner wall of the insulation layer (2) and the fireproof layer (3) respectively.

3. A precast concrete beam-slab according to claim 2, characterized in that: The outer walls of the insulation layer (2) and the fireproof layer (3) are provided with wedge grooves (6) corresponding to the wedge block (406), and the outer walls of the wedge block (406) are provided with fixing holes (5) corresponding to the threaded rod (401).

4. A precast concrete beam-slab according to claim 3, characterized in that: A positioning block (7) is fixedly connected to the top of the outer wall of the substrate (1) and the insulation layer (2), and a positioning groove (8) is provided at the bottom of the outer wall of the insulation layer (2) and the fireproof layer (3) corresponding to the positioning block (7).

5. A precast concrete beam-slab according to claim 4, characterized in that: A tension plate (9) is fixedly connected to the bottom of the outer wall of the substrate (1), and transverse ribs (10) are provided on the left and right sides of the outer wall of the tension plate (9).

6. A precast concrete beam-slab according to claim 5, characterized in that: The transverse rib (10) is fixedly connected to the bottom of the outer wall of the substrate (1).

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