Fabricated prefabricated laminated slab

Abstract

The utility model provides an assembly type prefabricated laminated slab which comprises a first laminated slab and a second laminated slab, and steel bar trusses are symmetrically and fixedly arranged at the tops of the two ends of the first laminated slab and the second laminated slab. Through clamping connection between a bottom clamping connection plate and an L-shaped groove, a first laminated plate, a second laminated plate, the bottom clamping connection plate and a top mounting plate are fixed through bolts and nuts, the first laminated plate and the second laminated plate are fixed conveniently, a movable rod is adjusted through an adjusting screw rod, extrusion between the steel bar trusses is facilitated, and the practicability of the steel bar trusses is improved. The steel bar truss, the first laminated slab and the second laminated slab can be conveniently fixed at the same time, the stability between the prefabricated laminated slabs can be improved, common stress between the prefabricated laminated slabs is facilitated, and therefore the practicability of the laminated slab is improved; and the adjusting screw rods can extrude the adjusting plates, so that the bottom ends of the adjusting plates are clamped to the outer sides of the nuts, the nuts can be prevented from rotating, and therefore the stability of the prefabricated laminated slab is improved.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated composite slab technology, specifically to an assembled prefabricated composite slab. Background Technology

[0002] Precast composite slabs are assembled monolithic floor slabs made by stacking precast slabs and cast-in-place concrete layers. They are suitable for high-rise buildings and large-span buildings that require high overall rigidity.

[0003] Chinese utility model patent CN217480559U discloses a prefabricated composite slab, comprising at least two composite floor slabs arranged side-by-side on the same horizontal plane and sequentially bonded together. Each composite floor slab includes a prefabricated layer, on which steel trusses are arranged side-by-side in the same length direction. The steel trusses and the prefabricated layer enclose a plurality of positioning spaces spaced apart along the length direction of the steel trusses. The positioning spaces extend along the distribution direction perpendicular to the two adjacent composite floor slabs. A positioning component is provided between two adjacent composite floor slabs, and the positioning component is inserted into and engaged with the positioning spaces corresponding to the two adjacent composite floor slabs.

[0004] The above technical solution achieves the joint force sharing of two adjacent composite floor slabs by interlocking the positioning components with the corresponding positioning spaces. It has a simple structure, reduces the amount of concrete poured, further reduces construction costs, and is easy to install, which helps improve construction efficiency. However, it can only be fixed between steel trusses. When adjacent composite floor slabs are subjected to large forces, the steel trusses and positioning components may bend, causing the composite floor slabs to bear the force alone, reducing the stability of adjacent composite floor slabs and resulting in low practicality.

[0005] Therefore, this utility model provides an assembled prefabricated composite slab. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a prefabricated composite slab to solve the problems mentioned in the background. This utility model can simultaneously fix the steel trusses and the first and second composite slabs through fixing mechanisms such as the top mounting plate and the bottom snap-fit ​​plate, thereby improving the stability of the prefabricated composite slabs, facilitating the sharing of force among the prefabricated composite slabs, and thus improving the practicality of the composite slab.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated composite slab, comprising a first composite slab and a second composite slab, wherein steel trusses are symmetrically fixedly arranged at the top of both ends of the first and second composite slabs, and a fixing mechanism is installed between the first and second composite slabs. The fixing mechanism includes a top mounting plate and a bottom snap-fit ​​plate, wherein the bottom snap-fit ​​plate is fixedly arranged at the bottom of the top mounting plate, and the top mounting plate is I-shaped. Movable rods are provided at both ends of the top of the top mounting plate via adjusting screws, and snap-fit ​​grooves are provided at the top ends of the movable rods and at both ends of the top of the top mounting plate, wherein the steel trusses are snap-fitted and installed inside the snap-fit ​​grooves.

[0008] Furthermore, the first and second composite slabs have the same specifications, and the steel truss is integrally cast with the first and second composite slabs.

[0009] Furthermore, L-shaped grooves are symmetrically provided at both ends of the first and second composite plates, and through holes are vertically provided at both ends of the first and second composite plates corresponding to the interior of the L-shaped grooves.

[0010] Furthermore, the bottom snap-fit ​​plate is T-shaped and is snap-fitted into the interior of the L-shaped groove, and a bolt is installed inside the through hole.

[0011] Furthermore, the bolt is installed through the interior of both ends of the bottom of the bottom snap-fit ​​plate, a nut is screwed onto the top of the bolt, and an elastic washer is installed on the bottom of the nut corresponding to the outside of the bolt.

[0012] Furthermore, the bottom two ends of the top mounting plate are symmetrically provided with screw holes, the top end of the bolt is screwed into the inside of the screw hole, and the nut is set at the top of the screw hole.

[0013] Furthermore, the movable rod is L-shaped, with its bottom end slidably mounted inside the top two ends of the top mounting plate, and the adjusting screw screwed into the bottom end of the movable rod and the top end of the top mounting plate.

[0014] Furthermore, mounting grooves are provided below the top two ends of the top mounting plate, and an adjustment plate is slidably mounted inside the mounting groove. The adjustment plate is L-shaped, and a spring is fixedly installed between the top end of the adjustment plate and the inner wall of the mounting groove. The bottom end of the adjustment plate is snapped onto the outside of the nut.

[0015] The beneficial effects of this utility model are as follows: This utility model provides an assembled prefabricated composite slab. The first composite slab, the second composite slab, the bottom locking plate, and the top mounting plate are fixed together by bolts and nuts through a bottom locking plate and an L-shaped groove. This facilitates the fixing of the first and second composite slabs. Adjusting the movable rod via an adjusting screw facilitates the compression of the steel truss, allowing for simultaneous fixing of the steel truss, the first composite slab, and the second composite slab. This improves the stability of the prefabricated composite slabs and allows them to share the load, thus enhancing their practicality. The adjusting screw compresses the adjusting plate, causing its bottom end to engage with the outside of the nut, preventing the nut from rotating and further improving the stability of the prefabricated composite slab. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a prefabricated composite slab according to the present invention;

[0017] Figure 2 This is a front sectional view of an assembled prefabricated composite slab according to the present invention.

[0018] Figure 3 This utility model relates to a prefabricated composite slab. Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a structural diagram of a fixing mechanism for a prefabricated composite slab according to the present invention.

[0020] In the diagram: 1. First composite slab; 2. Second composite slab; 3. Steel truss; 4. Fixing mechanism; 5. L-shaped groove; 6. Top mounting plate; 7. Bottom snap-fit ​​plate; 8. Bolt; 9. Movable rod; 10. Adjusting screw; 11. Adjusting plate; 12. Nut; 13. Snap-fit ​​groove. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 4This utility model provides a technical solution: a prefabricated composite slab, including a first composite slab 1 and a second composite slab 2. Steel trusses 3 are symmetrically fixed to the top of both ends of the first composite slab 1 and the second composite slab 2. A fixing mechanism 4 is installed between the first composite slab 1 and the second composite slab 2. The fixing mechanism 4 includes a top mounting plate 6 and a bottom snap-fit ​​plate 7. The bottom snap-fit ​​plate 7 is fixedly installed at the bottom of the top mounting plate 6. The top mounting plate 6 is I-shaped, and its top ends are open... A movable rod 9 is provided on the adjusting screw 10. The top end of the movable rod 9 and both ends of the top mounting plate 6 are provided with snap-fit ​​grooves 13. The steel truss 3 is snap-fitted and installed inside the snap-fit ​​grooves 13. By adjusting the adjusting screw 10 and the movable rod 9, it is convenient to fix the steel truss 3 together through the snap-fit ​​grooves 13. The bottom snap-fit ​​plate 7, the L-shaped groove 5 and the bolts 8 are used to fix the first composite plate 1 and the second composite plate 2 together, which can improve the stability of the precast composite plate, facilitate the sharing of force, and have high practicality.

[0023] In this embodiment, the first composite plate 1 and the second composite plate 2 have the same specifications. The steel truss 3 is integrally cast with the first composite plate 1 and the second composite plate 2. The two ends of the first composite plate 1 and the second composite plate 2 are symmetrically provided with L-shaped grooves 5. The two ends of the first composite plate 1 and the second composite plate 2 are provided with through holes vertically through the interior of the L-shaped grooves 5, which can improve the strength between the steel truss 3 and the first composite plate 1 and the second composite plate 2. By installing bolts 8 inside the through holes, it is convenient to fix the bottom snap-fit ​​plate 7 to the first composite plate 1 and the second composite plate 2, thereby fixing the first composite plate 1 and the second composite plate 2 together and facilitating the first composite plate 1 and the second composite plate 2 to share the force.

[0024] In this embodiment, the bottom snap-fit ​​plate 7 is T-shaped and snaps into the interior of the L-shaped groove 5. A bolt 8 is installed inside the through hole and passes through the interior of both ends of the bottom of the bottom snap-fit ​​plate 7. A nut 12 is screwed onto the top of the bolt 8, and an elastic washer is installed on the bottom of the nut 12 corresponding to the outside of the bolt 8. Threaded holes are symmetrically opened at both ends of the bottom of the top mounting plate 6. The top of the bolt 8 is screwed into the interior of the threaded hole, and the nut 12 is located at the top of the threaded hole. The cooperation of the bolt 8 and the nut 12 facilitates the fixation of the top mounting plate 6, the bottom snap-fit ​​plate 7, the first composite plate 1, and the second composite plate 2. The elastic washer facilitates the rotation of the nut 12, thereby fixing the nut 12 and improving the stability between the fixing mechanism 4 and the first composite plate 1 and the second composite plate 2.

[0025] In this embodiment, the movable rod 9 is L-shaped. The bottom end of the movable rod 9 is slidably installed inside the top two ends of the top mounting plate 6. The adjusting screw 10 is screwed into the bottom end of the movable rod 9 and the top end of the top mounting plate 6. The top two ends of the top mounting plate 6 are provided with mounting grooves. An adjusting plate 11 is slidably installed inside the mounting groove. The adjusting plate 11 is L-shaped. A spring is fixedly installed between the top end of the adjusting plate 11 and the inner wall of the mounting groove. The bottom end of the adjusting plate 11 is snapped onto the outside of the nut 12. The adjusting screw 10 is used to fix the movable rod 9. The movable rod 9 is fixed to the steel truss 3 through the snap-fit ​​groove 13. At the same time, the adjusting screw 10 can squeeze the adjusting plate 11, so that the adjusting plate 11 is snapped onto the outside of the nut 12, which facilitates the limiting of the nut 12 and can improve the stability of the nut 12, thereby fixing the precast composite slab.

[0026] When using this prefabricated composite slab, the first composite slab 1 and the second composite slab 2 are brought close together, and the bottom ends of the bottom clamping plate 7 are inserted into the L-shaped grooves 5 at both ends of the first composite slab 1 and the second composite slab 2. The first composite slab 1 and the second composite slab 2 are then spliced ​​together. Bolts 8 are clamped and installed at the bottom ends of the first composite slab 1 and the second composite slab 2 and inside the through holes. The bolts 8 are inserted into the L-shaped grooves 5, the bottom clamping plate 7, and the bottom ends of the top mounting plate 6. An elastic washer and a nut 12 are screwed onto the top of the bolts 8. The nut 12 is screwed in and its position is adjusted. The movable rod 9 is then installed on the top mounting plate via the adjusting screw 10. At both ends of 6, the movable rod 9 is engaged with the outside of the steel truss 3 through the snap-fit ​​groove 13, and the adjusting screw 10 is tightened. The adjusting screw 10 can compress the adjusting plate 11, the adjusting plate 11 compresses the spring, and the bottom end of the adjusting plate 11 is engaged with the outside of the nut 12. The bottom end of the adjusting plate 11 has a snap-fit ​​groove that engages with the outside of the nut 12, which facilitates limiting the nut 12 and thus improves the stability of the nut 12. It is convenient to fix the steel truss 3, the first composite plate 1 and the second composite plate 2 at the same time, which can improve the stability between the precast composite plates and facilitate the common force between the precast composite plates, thereby improving the practicality of the composite plate.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fabricated precast composite slab comprising a first composite slab (1) and a second composite slab (2), characterized in that, A steel truss (3) is symmetrically fixed at the top of both ends of the first composite plate (1) and the second composite plate (2). A fixing mechanism (4) is installed between the first composite plate (1) and the second composite plate (2). The fixing mechanism (4) includes a top mounting plate (6) and a bottom snap-fit ​​plate (7). The bottom snap-fit ​​plate (7) is fixedly installed at the bottom of the top mounting plate (6). The top mounting plate (6) is I-shaped. Movable rods (9) are provided at both ends of the top of the top mounting plate (6) through adjusting screws (10). Snap-fit ​​grooves (13) are opened at the top of the movable rods (9) and at both ends of the top of the top mounting plate (6). The steel truss (3) is snap-fitted and installed inside the snap-fit ​​grooves (13).

2. The prefabricated composite panel according to claim 1, characterized in that: The first composite plate (1) and the second composite plate (2) have the same specifications, and the steel truss (3) is integrally cast with the first composite plate (1) and the second composite plate (2).

3. The prefabricated composite panel according to claim 2, characterized in that: The first composite plate (1) and the second composite plate (2) are symmetrically provided with L-shaped grooves (5) at both ends, and the two ends of the first composite plate (1) and the second composite plate (2) are provided with through holes vertically through the interior of the L-shaped grooves (5).

4. The prefabricated composite panel according to claim 3, characterized in that: The bottom snap-fit ​​plate (7) is T-shaped and is snap-fitted into the inside of the L-shaped groove (5). A bolt (8) is installed inside the through hole.

5. The prefabricated composite panel according to claim 4, characterized in that: The bolt (8) is installed through the bottom of the bottom two ends of the bottom snap plate (7). A nut (12) is screwed onto the top of the bolt (8). An elastic washer is installed on the bottom of the nut (12) corresponding to the outside of the bolt (8).

6. The prefabricated composite panel according to claim 5, characterized in that: The top mounting plate (6) has symmetrical screw holes at both ends of its bottom. The top of the bolt (8) is screwed into the inside of the screw hole, and the nut (12) is set at the top of the screw hole.

7. The prefabricated composite panel according to claim 5, characterized in that: The movable rod (9) is L-shaped. The bottom end of the movable rod (9) is slidably installed inside the top two ends of the top mounting plate (6). The adjusting screw (10) is screwed into the bottom end of the movable rod (9) and the top end of the top mounting plate (6).

8. The prefabricated composite panel according to claim 7, characterized in that: The top mounting plate (6) has mounting grooves at both ends below the top. An adjustment plate (11) is slidably mounted inside the mounting groove. The adjustment plate (11) is L-shaped. A spring is fixedly installed between the top of the adjustment plate (11) and the inner wall of the mounting groove. The bottom of the adjustment plate (11) is snapped onto the outside of the nut (12).

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