Reusable steel fiber concrete prefabricated slab

Abstract

The invention discloses a reusable steel fiber reinforced concrete precast slab, and belongs to the field of constructional engineering materials. Comprising a combined plate, a limiting clamping block is arranged on the left side of the combined plate, a dovetail groove is formed in the right side of the combined plate, a plurality of clamping grooves are symmetrically formed in the outer side wall of the combined plate, clamping blocks are connected into the clamping grooves in a clamped mode, locking holes are formed in the outer side walls of the clamping blocks, and corner protection plates are fixedly connected to the top ends of the clamping blocks. Fixing grooves are formed in the dovetail grooves correspondingly, and elastic grooves are formed in the left sides of the limiting clamping blocks. Before transportation, the clamping blocks are embedded into the clamping grooves in the outer side wall of the combined plate, the corner protection plate can be rapidly fixed, comprehensive protection is provided for the corners of the prefabricated plate, corner damage caused by collision and friction in the transportation process is effectively avoided, and the material loss rate is reduced. And after a construction site is reached, the unique splicing design greatly simplifies the installation process.

Description

Technical Field

[0001] The present invention relates to the technology of building engineering materials, and particularly to a reusable steel fiber concrete precast slab. Background Art

[0002] In the field of modern construction engineering, precast slabs are widely used in various building structures due to their advantages such as high construction efficiency and stable quality. However, traditional precast slabs have many limitations. On the one hand, during transportation, the edges and corners of traditional precast slabs are prone to damage due to collision and friction, which not only affects the appearance of the precast slabs but also may reduce the structural performance, resulting in material waste and increased costs. On the other hand, traditional precast slabs are mostly spliced by welding, bolt connection and other methods, with cumbersome installation and disassembly processes, low construction efficiency, and low reuse rate, making it difficult to meet the requirements of green buildings and sustainable development. In addition, during long-term use, the surface of precast slabs is prone to wear and corrosion, leading to a decline in structural performance, shortening the service life, and resulting in relatively high later maintenance and replacement costs.

[0003] With the continuous improvement of the requirements of the construction industry for energy conservation, environmental protection, high-efficiency construction, and structural durability, there is an urgent need to develop a new type of precast slab that is convenient for transportation, simple in installation and disassembly, reusable, and highly durable. In this context, the reusable steel fiber concrete precast slab has emerged. Its unique structural design is expected to solve the above problems and bring new breakthroughs to the field of construction engineering. Summary of the Invention

[0004] Object of the Invention: The object of the present invention is to provide a reusable steel fiber concrete precast slab; another object of the present invention is to provide a precast slab with a stable structure and high durability.

[0005] Technical Solution: A reusable steel fiber concrete precast slab includes a combined slab. A limit block is provided on the left side of the combined slab, a dovetail groove is provided on the right side of the combined slab, a plurality of card slots are symmetrically provided on the outer side wall of the combined slab, a block is snap-fitted in each of the card slots, a locking hole is provided on the outer side wall of the block, a corner protection plate is fixedly connected to the top of each block, a fixing groove is provided in each of the dovetail grooves, a spring groove is provided on the left side of the limit block, a snap-in wedge block is slidably connected in each of the spring grooves, and a first return spring is fixedly connected between the snap-in wedge block and the inside of the spring groove.

[0006] Furthermore, a rotating groove is provided on the front surface of the combined slab, a rotating disc is rotatably connected in the rotating groove, a rotating port is provided in the front side wall of the rotating groove, a disc is rotatably connected in the rotating port, a connecting column is fixedly connected to the front surface of the rotating disc, and the front surface of the connecting column is fixedly connected to the rear surface of the disc.

[0007] Further, transverse grooves are symmetrically formed inside the rotating groove. Sliding grooves are formed at the opposite ends of the two transverse grooves. Sliding plates are slidably connected inside the sliding grooves. Extrusion rods are fixedly connected to the opposite sides of the two sliding plates. The ends of the extrusion rods away from the sliding plates all extend into the clamping grooves.

[0008] Further, extrusion bumps are symmetrically and fixedly connected to the outer side wall of the turntable. Cross bars are slidably connected inside the transverse grooves. A sliding ring is fixedly connected to the outer side wall of the cross bar. Elastic rings are fixedly connected to both the sliding ring and the inside of the transverse groove. The two elastic rings are respectively wound around the outer side walls of the two cross bars. The opposite ends of the two cross bars are fixedly connected to the outer side walls of the adjacent sliding plates.

[0009] Further, limiting openings are symmetrically formed inside the rotating opening. A locking opening is formed on the right side of the outer side wall of the disc. A double-sided wedge block is slidably connected inside the locking opening. A second return spring is fixedly connected between the double-sided wedge block and the inside of the locking opening. The double-sided wedge block is snap-fitted with the inside of the locking opening.

[0010] Further, rotating openings are symmetrically formed on the front surface of the disc.

[0011] Further, a ceramic contact surface is fixedly connected to the rear surface of the combined plate.

[0012] Beneficial effects: Before transportation, by inserting the clamping blocks into the clamping grooves on the outer side wall of the combined plate, the corner protection plates can be quickly fixed, providing comprehensive protection for the corners of the precast slabs, effectively avoiding corner damage caused by collision and friction during transportation, and reducing the material loss rate. After arriving at the construction site, the unique splicing design greatly simplifies the installation process. The precise cooperation between the limit clamping blocks and the dovetail grooves, combined with the automatic locking mechanism of the clamping wedge blocks and the first return spring, makes the splicing operation of the combined plate simple and stable. During the reinforcement process, rotating the disc can drive a series of linkage structures to squeeze the clamping blocks from both sides, and the elastic rings continuously provide pressure to ensure a firm connection. When disassembling, operate in the reverse direction and all components are reset, enabling the clamping blocks and the corner protection plates to be easily disassembled. Pressing the clamping wedge blocks can separate the combined plate. The whole process does not require complex tools, greatly improving the construction efficiency. This design not only reduces the construction time and labor costs, but also realizes the reuse of precast slabs, conforms to the concept of green construction, and reduces the overall project cost.

[0013] During the reinforcement operation, the cooperative design of the disc with the double-sided wedge block and the limiting port enables the double-sided wedge block to pop out and snap into the limiting port under the action of the second return spring when the disc rotates to the set position, locking the disc and thus fixing the position of the turntable, ensuring the continuous and stable extrusion of the clamping block by the extrusion rod, maintaining the stability of the connection between the corner protection plate and the composite plate, effectively enhancing the overall structural strength of the precast slab, and resisting external loads and environmental effects. At the same time, the ceramic contact surface on the rear surface of the composite plate, by virtue of the high hardness and wear resistance of the ceramic, can significantly reduce the wear on the surface of the contacted object during the laying and use of the precast slab, prevent the rear surface of the composite plate from being scratched and corroded, effectively extend the service life of the precast slab, and reduce the risk of structural performance degradation caused by surface wear. This not only reduces the cost incurred by frequent replacement of precast slabs but also ensures the safety and stability of the engineering structure during long-term use, providing a reliable guarantee for infrastructure construction. Description of the Drawings

[0014] Figure 1 is the overall structural schematic diagram of the present invention;

[0015] Figure 2 is the sectional structural schematic diagram of the composite plate of the present invention;

[0016] Figure 3 is the present invention Figure 2 enlarged structural schematic diagram at A;

[0017] Figure 4 is the sectional structural schematic diagram of the disc of the present invention;

[0018] Figure 5 is the sectional structural schematic diagram of the limit clamping block of the present invention.

[0019] In the figure: 1, composite plate; 2, limit clamping block; 3, dovetail groove; 4, clamping groove; 5, clamping block; 30, locking hole; 6, corner protection plate; 7, fixing groove; 8, elastic groove; 9, clamping wedge block; 10, first return spring; 11, rotating groove; 12, turntable; 13, rotating port; 14, disc; 15, connecting column; 16, transverse groove; 17, sliding groove; 18, sliding plate; 19, extrusion rod; 20, extrusion convex block; 21, cross bar; 22, sliding ring; 23, elastic ring; 31, limiting port; 25, locking port; 26, double-sided wedge block; 27, second return spring; 28, rotating port; 29, ceramic contact surface. Detailed Embodiment

[0020] To make the technical solution of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.

[0021] Embodiment

[0022] As Figures 1-5As shown in the figure, a reusable precast steel fiber concrete slab is provided, including a combined slab 1. A limit block 2 is provided on the left side of the combined slab 1, a dovetail groove 3 is provided on the right side of the combined slab 1, and a plurality of card slots 4 are symmetrically provided on the outer side wall of the combined slab 1. A block 5 is snap-fitted inside each card slot 4. A locking hole 30 is provided on the outer side wall of the block 5. A corner protection plate 6 is fixedly connected to the top of each block 5. A fixing groove 7 is provided inside each dovetail groove 3. There is an elastic groove 8 on the left side of the limit block 2. A clamping wedge block 9 is slidably connected inside each elastic groove 8. A first return spring 10 is fixedly connected between the clamping wedge block 9 and the inside of the elastic groove 8. A rotating groove 11 is provided on the front surface of the combined slab 1. A turntable 12 is rotatably connected inside the rotating groove 11. A rotating opening 13 is provided in the front inner side wall of the rotating groove 11. A disc 14 is rotatably connected inside the rotating opening 13. A connecting column 15 is fixedly connected to the front surface of the turntable 12. The front surface of the connecting column 15 is fixedly connected to the rear surface of the disc 14. Transverse grooves 16 are symmetrically provided inside the rotating groove 11. Sliding grooves 17 are provided at the opposite ends of the two transverse grooves 16. A sliding plate 18 is slidably connected inside each sliding groove 17. A pressing rod 19 is fixedly connected to the opposite sides of the two sliding plates 18. One end of the pressing rod 19 away from the sliding plate 18 extends into the card slot 4. Extrusion bumps 20 are symmetrically fixedly connected to the outer side wall of the turntable 12. A cross bar 21 is slidably connected inside the transverse groove 16. A sliding ring 22 is fixedly connected to the outer side wall of the cross bar 21. Elastic rings 23 are fixedly connected between the sliding ring 22 and the inside of the transverse groove 16. The two elastic rings 23 are respectively wound around the outer side walls of the two cross bars 21. The opposite ends of the two cross bars 21 are fixedly connected to the outer side walls of the adjacent sliding plates 18. Extrusion bumps 20 are symmetrically fixedly connected to the outer side wall of the turntable 12. A cross bar 21 is slidably connected inside the transverse groove 16. A sliding ring 22 is fixedly connected to the outer side wall of the cross bar 21. Elastic rings 23 are fixedly connected between the sliding ring 22 and the inside of the transverse groove 16. The two elastic rings 23 are respectively wound around the outer side walls of the two cross bars 21. The opposite ends of the two cross bars 21 are fixedly connected to the outer side walls of the adjacent sliding plates 18;

[0023] Before transportation, insert the clamping block 5 into the clamping groove 4 on the outer side wall of the composite board 1 to fix the corner protection board 6, providing protection for the corners of the precast slab. After arriving at the construction site, first remove the corner protection board 6, align the limit clamping block 2 of the composite board 1 with the dovetail groove 3 of another composite board 1, and push the composite board 1 to insert the limit clamping block 2 into the dovetail groove 3. During this process, the engaging wedge block 9 in the elastic groove 8 is compressed and inserted. When the limit clamping block 2 is completely inserted, the engaging wedge block 9 pops out under the action of the first reset spring 10 and is engaged into the fixing groove 7 to complete the splicing of the composite board 1. After the splicing is completed, the corner protection board 6 can be installed diagonally appropriately and then reinforced. Rotate the disc 14, drive the turntable 12 to rotate through the connecting column 15. The extrusion convex block 20 on the outer side wall of the turntable 12 rotates accordingly. The extrusion cross bar 21 slides in the horizontal groove 16. The cross bar 21 drives the sliding ring 22 to compress the elastic ring 23, and at the same time pulls the sliding plate 18 to make the extrusion rod 19 extend into the clamping groove 4 to squeeze the clamping block 5 from both sides. The elastic ring 23 continuously provides pressure to ensure firm connection. When disassembling, rotate the disc 14 in the reverse direction. The extrusion convex block 20 is disengaged from the extrusion of the cross bar 21. The elastic ring 23 releases its elastic force to push the cross bar 21 and the sliding plate 18 to reset. The extrusion rod 19 exits from the clamping groove 4. At this time, the clamping block 5 can be easily taken out, the corner protection board 6 can be removed, and then press the engaging wedge block 9 to separate the composite board 1 to realize the reuse of the precast slab.

[0024] Furthermore, limiting ports 31 are symmetrically arranged inside the transfer port 13. A locking port 25 is arranged on the right side of the outer side wall of the disc 14. A double-sided wedge block 26 is slidably connected inside the locking port 25. A second reset spring 27 is fixedly connected between the double-sided wedge block 26 and the inside of the locking port 25. The double-sided wedge block 26 is snap-fitted with the inside of the locking port 25.

[0025] When performing the reinforcement operation on the precast slab, rotate the disc 14 to drive the turntable 12 and its components to realize the extrusion and fixation of the clamping block 5. When the disc 14 rotates to the set position and the double-sided wedge block 26 is aligned with the limiting port 31, the double-sided wedge block 26 pops out under the elastic force of the second reset spring 27 and is engaged into the limiting port 31 to lock the disc 14, thereby fixing the position of the turntable 12, ensuring the continuous and stable extrusion of the extrusion rod 19 on the clamping block 5, and maintaining the firm connection between the corner protection board 6 and the composite board 1. When it is necessary to remove the corner protection board 6, rotate the disc 14 to compress the second reset spring 27 to make the double-sided wedge block 26 withdraw from the limiting port 31 to release the locking of the disc 14 and complete the local disassembly operation of the precast slab.

[0026] Furthermore, rotating ports 28 are symmetrically arranged on the front surface of the disc 14. A ceramic contact surface 29 is fixedly connected to the rear surface of the composite board 1.

[0027] When operating the disc 14, tools or fingers can be inserted into the rotating opening 28 to increase the contact area and friction with the disc 14, making it easier to apply force to rotate the disc 14, thereby driving the turntable 12 and related structures to complete the reinforcement or release operation of the corner protection plate 6. The ceramic contact surface 29 on the rear surface of the composite panel 1, during the laying and use of the prefabricated panels, reduces the wear on the surface of the contacting object due to the high hardness and wear resistance of the ceramic, prevents the rear surface of the composite panel 1 from being scratched or corroded, effectively prolongs the service life of the prefabricated panels, and also reduces the risk of structural performance degradation due to surface wear.

[0028] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A reusable steel fiber concrete prefabricated panel, comprising a composite panel (1), characterized in that: The left side of the combined plate (1) is provided with a limit block (2), the right side of the combined plate (1) is provided with a dovetail groove (3), the outer side wall of the combined plate (1) is symmetrically provided with a plurality of grooves (4), the inside of each of the grooves (4) is engaged with a block (5), the outer side wall of each of the blocks (5) is provided with a locking hole (30), the top of each of the blocks (5) is fixedly connected with a corner protection plate (6), the inside of each of the dovetail grooves (3) is provided with a fixing groove (7), the left side of the limit block (2) is provided with an elastic groove (8), the inside of each of the elastic grooves (8) is slidably connected with an engaging wedge block (9), and a return spring (10) is fixedly connected between the engaging wedge block (9) and the inside of the elastic groove (8).

2. The reusable steel fiber concrete prefabricated panel according to claim 1, characterized in that: The front surface of the combined plate (1) is provided with a rotation groove (11), the interior of the rotation groove (11) is rotatably connected to a rotation disk (12), a rotation opening (13) is provided in front of the inner side wall of the rotation groove (11), the interior of the rotation opening (13) is rotatably connected to a disk (14), the front surface of the rotation disk (12) is fixedly connected to a connecting column (15), and the front surface of the connecting column (15) is fixedly connected to the rear surface of the disk (14).

3. The reusable steel fiber concrete prefabricated panel according to claim 2, characterized in that: The rotating groove (11) is symmetrically provided with transverse grooves (16) at opposite ends of the two transverse grooves (16), a sliding groove (17) is slidably connected to a slide plate (18) at the inside of the sliding groove (17), and the opposite sides of the two slide plates (18) are fixedly connected with an extrusion rod (19), and one end of the extrusion rod (19) away from the slide plate (18) extends to the inside of the clamping groove (4).

4. The reusable steel fiber concrete prefabricated panel according to claim 2, characterized in that: The outer wall of the rotating disk (12) is symmetrically fixedly connected with an extrusion protrusion (20), the interior of the transverse groove (16) is slidably connected with a transverse rod (21), the outer wall of the transverse rod (21) is fixedly connected with a sliding ring (22), the sliding ring (22) and the interior of the transverse groove (16) are both fixedly connected with an elastic ring (23), the two elastic rings (23) are respectively arranged around the outer walls of the two transverse rods (21), and the opposite ends of the two transverse rods (21) are fixedly connected with the outer walls of the adjacent slide plates (18).

5. The reusable steel fiber concrete prefabricated panel according to claim 2, characterized in that: The rotating opening (13) is symmetrically provided with a limit opening (31), the outer side wall of the disc (14) is provided with a locking opening (25) on the right side, the locking opening (25) is slidably connected with a double-sided wedge block (26) inside, the double-sided wedge block (26) and the locking opening (25) are fixedly connected with a second return spring (27), and the double-sided wedge block (26) is snap-fitted with the inside of the locking opening (25).

6. The reusable steel fiber concrete prefabricated panel according to claim 2, characterized in that: The front surface of the disc (14) is symmetrically provided with a rotation opening (28).

7. The reusable steel fiber concrete prefabricated panel according to claim 1, characterized in that: A ceramic contact surface (29) is fixedly connected to the rear surface of the combined plate (1).

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