Quick connecting structure of concrete laminated slabs

Abstract

The utility model discloses a quick connecting structure of a concrete laminated slab, and mainly relates to the field of laminated slab construction. Comprising extending ribs arranged on the side faces of the prefabricated slabs, a post-cast strip is arranged between every two adjacent prefabricated slabs, the extending ribs extend into the post-cast strips, ring openings are formed in the ends of the extending ribs, and connecting columns are movably inserted into the ring openings of the ends of the extending ribs on the side face of the same prefabricated slab. The two ends of each connecting column are provided with check blocks used in cooperation with the ring openings, a plurality of positioning rods are movably connected between the two connecting columns, and the two ends of each positioning rod are provided with clamping openings used in cooperation with the two connecting columns respectively. The connecting device has the advantages that the technical problem that the overall construction efficiency is affected due to the fact that the connecting speed of prefabricated slabs of the laminated slabs is low can be solved, the connecting speed of a plurality of steel bars on the side faces of the prefabricated slabs is increased, the connecting workload is reduced, and the overall construction efficiency of the laminated slabs is improved.

Description

Technical Field

[0001] This utility model relates to the field of composite slab construction, specifically a quick connection structure for concrete composite slabs. Background Technology

[0002] Composite slabs are prefabricated building structures composed of precast slabs and cast-in-place reinforced concrete. After the precast slabs are hoisted, they are usually connected to adjacent precast slabs using a post-cast strip. Existing precast slabs generally have reinforcing bars extending into the post-cast strip. These reinforcing bars are usually connected by lap splicing or welding. Due to the large number of reinforcing bars, the workload of connecting the reinforcing bars between adjacent precast slabs is large, the construction period is long, and it greatly affects the construction efficiency of composite slabs. Utility Model Content

[0003] The purpose of this utility model is to provide a quick connection structure for concrete composite slabs, which can solve the technical problem that the connection speed of precast slabs of composite slabs is slow and affects the overall construction efficiency, improve the speed of connecting multiple steel bars on the side of the precast slab, reduce the workload of connection, and improve the overall construction efficiency of composite slabs.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A quick-connection structure for a precast concrete slab includes protruding reinforcing bars on the side of a precast slab, a post-cast strip between adjacent precast slabs, the protruding reinforcing bars extending into the interior of the post-cast strip, and an end of the protruding reinforcing bar having a ring. Connecting columns are movably inserted into the rings at the ends of multiple protruding reinforcing bars on the same side of the precast slab. Both ends of the connecting columns have stops for use with the rings. Multiple positioning rods are movably connected between two connecting columns, and both ends of the positioning rods have latches for use with the two connecting columns.

[0006] Furthermore, the longitudinal section of the bayonet is a transverse U-shape, the connecting post is located inside the U-shape, and a stop post that is used in conjunction with the connecting post is movably connected to the opening of the U-shape.

[0007] Furthermore, the stop post passes through one side of the U-shape and is threadedly connected to the other side of the U-shape.

[0008] Furthermore, the positioning rod includes a fixed post and a rotating sleeve. The fixed post is fixedly connected to one of the bayonets, and the rotating sleeve is rotatably connected to the other bayonet. The rotating sleeve is threadedly connected to the outside of the fixed post.

[0009] Furthermore, the stop block at one end of the connecting column is fixedly connected to the connecting column, and the stop block at the other end of the connecting column is threadedly connected to the connecting column.

[0010] Furthermore, the opening is formed by bending the end of the protruding rib.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The structure of this utility model has a ring at the end of the protruding rib on the side of the precast slab. After the precast slab is hoisted, the rings at the ends of multiple protruding ribs on the same side of the precast slab are aligned. Then, the multiple protruding ribs on the same precast slab are connected into one piece by connecting columns passing through multiple rings. Then, multiple positioning rods are used to connect and fix the two connecting columns, thereby realizing the rapid connection of the protruding ribs on two adjacent precast slabs. This makes the connection structure between two adjacent precast slabs more solid. When the post-pouring strip is poured, it is not easy for the two precast slabs to move relative to each other. This improves the firmness of the connection between the post-pouring strip and the two precast slabs, greatly increases the connection speed, reduces the workload of the connection operation, and improves the construction efficiency of the composite slab.

[0013] 2. The positioning rod is equipped with two locking slots at both ends to cooperate with the two connecting columns, making the connection between the positioning rod and the connecting column more secure. At the same time, the connecting column is equipped with a stop block at both ends to cooperate with the ring, so that the connecting column is not easy to move relative to the ring after being connected with multiple rings. This improves the firmness of the connection between the connecting column and multiple rings, making the connection structure between the connecting column and multiple protruding bars more secure when the post-pouring strip is poured. It also makes it less likely for adjacent precast slabs to misalign or move, thus improving the firmness of the resulting composite slab. Attached Figure Description

[0014] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Appendix Figure 2 This is a top view of the present invention.

[0016] Appendix Figure 3 This is an appendix to this utility model. Figure 2 A cross-sectional view along the AA direction.

[0017] Appendix Figure 4 This is an appendix to this utility model. Figure 3 A magnified view of part B in the middle.

[0018] Appendix Figure 5 This is an appendix to this utility model. Figure 2 A cross-sectional view along the CC direction.

[0019] Appendix Figure 6 This is an appendix to this utility model. Figure 5 A magnified view of part D in the middle.

[0020] The labels shown in the attached diagram:

[0021] 1. Precast slab; 2. Extending rib; 3. Post-cast strip; 4. Ring; 5. Connecting column; 6. Stop block; 7. Positioning rod; 8. Clamp; 9. Stop column; 10. Fixed column; 11. Rotating sleeve. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0023] Reference Figure 1 and Figure 2This utility model describes a quick-connection structure for composite concrete slabs. The main structure includes protruding reinforcing bars 2 on the side of a precast slab 1. After the precast slab 1 is manufactured in the factory, it is hoisted to the construction position using a crane. Reinforcing bars are installed inside the precast slab 1, extending from the side of the precast slab 1 to form the protruding reinforcing bars 2. A post-pouring strip 3 is provided between adjacent precast slabs 1. The post-pouring strip 3 is formed by pouring concrete between the two precast slabs 1 after they are hoisted, serving to connect the two precast slabs 1. During pouring, concrete is poured simultaneously onto both precast slabs 1, ultimately forming a composite structure. The structure composed of slab 1 and cast-in-place reinforced concrete is a composite slab. The protruding reinforcement 2 extends into the interior of the post-cast strip 3, connecting the precast slab 1 and the cast-in-place strip 3 through the protruding reinforcement 2, thus improving the structural strength of the connection between the two precast slabs 1. The end of the protruding reinforcement 2 is provided with a ring 4, the longitudinal section of which is circular. Connecting columns 5 are movably inserted into the ring 4 at the ends of multiple protruding reinforcement 2 on the same side of the precast slab 1. After the precast slab 1 is hoisted, the ring 4 at the ends of multiple protruding reinforcement 2 are aligned. Then, the connecting columns 5 are passed through the multiple ring 4 in sequence to connect the multiple protruding reinforcement 2. The connecting column 5 connects multiple protruding ribs 2 on the same side of the precast slab 1 into a single unit. Each end of the connecting column 5 has a stop block 6 that mates with a ring 4. The longitudinal cross-sectional dimension of the stop block 6 is larger than that of the ring 4, thus restricting the connection between the connecting column 5 and the multiple protruding ribs 2 after connection. This prevents relative movement between the connecting column 5 and the multiple protruding ribs 2, improving the stability of the connection and fixation. Multiple positioning rods 7 are movably connected between two connecting columns 5. These positioning rods 7 are used to position and fix the distance between the two connecting columns 5, preventing the connecting column 5 and the multiple protruding ribs 2 from shifting. The relative displacement between the protruding reinforcing bars 2 ensures the firmness of the post-pouring strip 3 during pouring. The two ends of the positioning rod 7 are respectively provided with a locking slot 8 for use with the two connecting columns 5. The locking slot 8 can be connected and fixed with the connecting columns 5, so that the two ends of the positioning rod 7 are in closer contact with the two connecting columns 5, which further improves the firmness of the connection structure. This makes it less likely for the two precast slabs 1 to shift during the pouring of cast-in-place concrete, thus improving the firmness of the composite slab structure formed by pouring. The structure is simple, the connection operation is more convenient and efficient, greatly reducing the workload of connection and improving the overall construction efficiency.

[0024] Preferred, refer to Figure 5 and Figure 6The longitudinal section of the bayonet 8 is a transverse U-shape, and the connecting post 5 is located inside the U-shape. The inner arc of the U-shape fits into the arc side of the connecting post 5, making the connection between the bayonet 8 and the connecting post 5 more secure. A stop post 9 is movably connected to the opening of the U-shape to cooperate with the connecting post 5. The stop post 9 can seal the connecting post 5 inside the U-shaped bayonet 8 after the bayonet 8 and the connecting post 5 are connected, thereby further improving the firmness of the fit between the bayonet 8 and the connecting post 5.

[0025] Preferably, the stop post 9 passes through one side of the U-shape and is threaded to the other side of the U-shape. With this structure, when installing the stop post 9, it is only necessary to insert it from the top of the U-shape and rotate it to make the bottom of the stop post 9 threaded to the bottom of the U-shaped bayonet 8. The operation is simpler and the connection speed is further improved.

[0026] Preferably, the positioning rod 7 includes a fixed post 10 and a rotating sleeve 11. The fixed post 10 is fixedly connected to one of the bayonets 8 by welding or integral molding. The rotating sleeve 11 is rotatably connected to the other bayonet 8 by a bearing. The rotating sleeve 11 is threaded to the outside of the fixed post 10. With this structure, by rotating the rotating sleeve 11, the distance between the two bayonets 8 can be adjusted under the action of the threaded connection, thereby accurately matching the distance between the two connecting posts 5. This improves the matching effect for different precast slab spacings and meets the connection requirements of composite slabs of different sizes.

[0027] Preferably, the stop block 6 at one end of the connecting post 5 is fixedly connected to the connecting post 5 by welding or integral molding, and the stop block 6 at the other end of the connecting post 5 is threadedly connected to the connecting post 5. Specifically, the stop block 6 at the other end is a nut. After the connecting post 5 is inserted into multiple rings 4, the stop block 6 at one end contacts the ring 4 at the edge. Then, the nut is threaded onto the other end of the connecting post 5 so that it contacts the ring 4 at the edge. This realizes the quick connection of the connecting post 5, further simplifies the operation steps, and improves the connection efficiency.

[0028] Preferred, refer to Figure 3 and Figure 4 The ring opening 4 is formed by bending the end of the protruding rib 2. This structure makes the ring opening 4 simpler, eliminating the need for additional welding or other forming operations. This simplifies the production of the connection structure, reduces the difficulty of production, and improves the compatibility with the existing protruding rib 2 structure.

[0029] Working Principle: This invention features a ring 4 at the end of the protruding ribs 2 on the side of the precast slab 1. After the precast slab 1 is hoisted, the rings 4 at the ends of multiple protruding ribs 2 on the same side of the precast slab 1 are aligned. Then, connecting columns 5 pass through the multiple rings 4 to connect the multiple protruding ribs 2 on the same precast slab 1 into one unit. Subsequently, multiple positioning rods 7 are used to connect and fix two connecting columns 5, thereby achieving rapid connection of the protruding ribs 2 on adjacent precast slabs 1. This makes the connection structure between adjacent precast slabs 1 more robust, reducing the likelihood of relative movement between the two precast slabs 1 during the pouring of the post-pouring strip 3, and improving the connection between the two precast slabs 1 by the post-pouring strip 3. The improved stability significantly increases the connection speed, reduces the workload of connection operations, and improves the construction efficiency of the composite slab. The positioning rod 7 has two locking slots 8 at both ends for use with two connecting columns 5, making the connection between the positioning rod 7 and the connecting column 5 more secure. Simultaneously, the connecting column 5 has two stops 6 at both ends for use with the rings 4, making it less likely for the connecting column 5 to move relative to the rings 4 after connection. This improves the stability of the connection between the connecting column 5 and the multiple rings 4, making the connection structure between the connecting column 5 and the multiple protruding reinforcements 2 more robust during the pouring of the post-pouring strip 3. It also prevents misalignment between adjacent precast slabs 1, thus improving the overall stability of the formed composite slab.

Claims

1. A quick-connection structure for a precast concrete slab, comprising protruding reinforcing bars (2) disposed on the side of a precast slab (1), a post-cast strip (3) provided between adjacent precast slabs (1), wherein the protruding reinforcing bars (2) extend into the interior of the post-cast strip (3), characterized in that: The end of the protruding rib (2) is provided with a ring (4). A connecting post (5) is movably inserted into the ring (4) at the end of multiple protruding ribs (2) on the same side of the precast slab (1). Both ends of the connecting post (5) are provided with a stop block (6) for use with the ring (4). Multiple positioning rods (7) are movably connected between two connecting posts (5). Both ends of the positioning rod (7) are provided with a bayonet (8) for use with two connecting posts (5).

2. The quick-connection structure for a composite concrete slab according to claim 1, characterized in that: The longitudinal section of the bayonet (8) is a transverse U-shape, the connecting post (5) is located inside the U-shape, and the opening of the U-shape is movably connected to a stop post (9) that is used in conjunction with the connecting post (5).

3. The quick connection structure for a composite concrete slab according to claim 2, characterized in that: The stop post (9) passes through one side of the U-shape and is threaded to the other side of the U-shape.

4. The quick connection structure for a composite concrete slab according to claim 1, characterized in that: The positioning rod (7) includes a fixed post (10) and a rotating sleeve (11). The fixed post (10) is fixedly connected to one of the bayonets (8), and the rotating sleeve (11) is rotatably connected to the other bayonet (8). The rotating sleeve (11) is threadedly connected to the outside of the fixed post (10).

5. The quick connection structure for a composite concrete slab according to claim 1, characterized in that: The stop block (6) at one end of the connecting column (5) is fixedly connected to the connecting column (5), and the stop block (6) at the other end of the connecting column (5) is threadedly connected to the connecting column (5).

6. The quick connection structure for a composite concrete slab according to claim 1, characterized in that: The opening (4) is formed by bending the end of the protruding rib (2).

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