A connection structure for precast floor slabs

Abstract

This utility model discloses a connection structure for precast floor slabs, belonging to the field of precast floor slab connection technology. It includes a precast beam and a precast wall panel body. The precast beam has a slot and a circular hole inside, and the slot and the circular hole are connected. A movable plate is slidably connected inside the slot. A first spring is fixedly connected to one side of the movable plate, and the other end of the first spring is fixedly connected to the inner wall of the circular hole. An insert block is fixedly connected to the side of the precast wall panel body near the precast beam. Through the cooperation of the insert block, slot, circular hole, first spring, and limiting mechanism, when the insert block is inserted into the slot, the limiting insert plate will be pushed into the limiting groove by a second spring, achieving axial limiting of the insert block and effectively preventing the insert block from detaching. This achieves initial fixing of the precast beam and the precast wall panel body. Further fixing with pre-embedded bolts significantly improves the overall connection strength and reliability.

Description

Technical Field

[0001] This utility model relates to the field of precast floor slab connection technology, and in particular to a connection structure for precast floor slabs. Background Technology

[0002] In the process of modern building industrialization, precast floor slabs have become an important component in the construction field due to their significant advantages. Precast floor slabs are floor structures that are prefabricated in a factory and then transported to the construction site for installation. Compared with traditional cast-in-place floor slabs, precast floor slabs can be manufactured in a standardized factory production environment using professional equipment and mature processes. They have high dimensional accuracy and stable quality, which can effectively reduce the amount of wet work on site, reduce construction dust and noise pollution, and at the same time greatly shorten the construction cycle and improve construction efficiency. They are widely used in various construction projects such as residential buildings, commercial buildings and industrial plants.

[0003] With the rapid development of prefabricated buildings, the connection technology between prefabricated components has become a key factor affecting the overall performance and safety of buildings. As an important component for horizontal load-bearing and space division in buildings, prefabricated floor slabs need to be reliably connected with prefabricated beams to form a stable building structure system.

[0004] Currently, the connection between precast beams and precast floor slabs is mostly achieved by first using pre-embedded bolts for dry connection, and then reinforced by concrete pouring. However, relying solely on pre-embedded bolts for connection is not only a weak connection method, but the bolts are also prone to loosening due to vibration or load, resulting in low overall connection strength. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the existing technology relies solely on pre-embedded bolts to connect precast floor slabs and precast beams, resulting in low overall connection strength, and proposes a connection structure for precast floor slabs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A connection structure for a precast floor slab includes a precast beam and a precast wall panel body. The precast beam has a slot and a circular hole inside, and the slot and the circular hole are connected. A movable plate is slidably connected inside the slot. A first spring is fixedly connected to one side of the movable plate. The other end of the first spring is fixedly connected to the inner wall of the circular hole. An insert is fixedly connected to the side of the precast wall panel body near the precast beam. The insert is slidably connected inside the slot and abuts against the side of the movable plate away from the first spring. A limiting mechanism is provided inside the precast beam to fix the insert.

[0008] Preferably, the limiting mechanism includes a groove formed inside the precast beam, and the groove is connected to the slot. A second spring is fixedly connected inside the groove, and a limiting plate is fixedly connected to the other end of the second spring. The limiting plate is slidably connected inside the groove.

[0009] Preferably, the insert has a limiting groove inside that matches the limiting insert plate, and the side of the limiting insert plate away from the second spring is inserted into the limiting groove.

[0010] Preferably, the limiting plate has a guide groove and a limiting hole inside, and the limiting hole is connected to the bottom end of the guide groove.

[0011] Preferably, a support block is fixedly connected to the outer surface of the movable plate, and a limiting rod is fixedly connected to the side of the support block near the insertion block, with the other end of the limiting rod slidably inserted into the inside of the guide groove.

[0012] Preferably, the precast beam has an installation groove inside, and the outer surface of the precast wall panel body is fixedly connected to a flange, which is inserted into the installation groove.

[0013] Preferably, the mounting groove is fixedly connected with a pre-embedded bolt, the other end of which slides through the flange, and the threaded portion of the pre-embedded bolt located outside the flange is tightened with a nut.

[0014] Compared with the prior art, this utility model provides a connection structure for precast floor slabs, which has the following beneficial effects:

[0015] This utility model utilizes the cooperation between the insert block, slot, round hole, first spring and limiting mechanism. When the insert block is inserted into the slot, the limiting plate will be pushed into the limiting groove by the second spring to achieve axial limiting of the insert block, effectively preventing the insert block from falling off, and achieving the initial fixation of the precast beam and the precast wall panel body. Then, further fixation is achieved by the pre-embedded bolts, which can significantly improve the overall connection strength and reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the insertion block and limiting mechanism of this utility model.

[0018] Figure 3 This is a schematic diagram showing the connection between the movable plate and the first spring of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the insert block of this utility model.

[0020] Figure 5This is a schematic diagram of the structure of the second spring and the limiting plate of this utility model.

[0021] In the picture:

[0022] 1. Precast beam; 2. Precast wall panel body; 3. Slot; 4. Insert block; 5. Movable plate; 6. Round hole; 7. First spring; 8. Support block; 9. Limiting rod; 10. Slide groove; 11. Second spring; 12. Limiting insert plate; 13. Guide groove; 14. Limiting hole; 15. Limiting groove; 16. Flange; 17. Embedded bolt; 18. Nut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-5 A connection structure for a precast floor slab includes a precast beam 1 and a precast wall panel body 2. The precast beam 1 has an installation groove inside. A flange 16 is fixedly connected to the outer surface of the precast wall panel body 2, and the flange 16 is inserted into the installation groove. An embedded bolt 17 is fixedly connected inside the installation groove. The other end of the embedded bolt 17 slides through the flange 16, and the threaded part of the embedded bolt 17 located outside the flange 16 is tightened with a nut 18. After the flange 16 is inserted into the installation groove, the precast wall panel body 2 can be fixed to the precast beam 1 through the threaded connection between the nut 18 and the embedded bolt 17.

[0025] The precast beam 1 has a slot 3 and a round hole 6 inside, and the slot 3 and the round hole 6 are connected. A movable plate 5 is slidably connected inside the slot 3. A first spring 7 is fixedly connected to one side of the movable plate 5. The other end of the first spring 7 is fixedly connected to the inner wall of the round hole 6. A plug 4 is fixedly connected to the side of the precast wall panel body 2 near the precast beam 1. The plug 4 is slidably connected inside the slot 3 and abuts against the side of the movable plate 5 away from the first spring 7. When the plug 4 is inserted into the slot 3, the end face of the plug 4 pushes the movable plate 5 to slide towards the round hole 6, compressing the first spring 7. The rebound force generated by the first spring 7 keeps the movable plate 5 pressed against the plug 4, thereby forming a pre-tightening force between the plug 4 and the slot 3, reducing the relative shaking between the two and improving the tightness of the connection.

[0026] The precast beam 1 is equipped with a limiting mechanism to fix the insert 4. The limiting mechanism includes a groove 10 inside the precast beam 1, which is connected to the slot 3. A second spring 11 is fixedly connected inside the groove 10. The other end of the second spring 11 is fixedly connected to a limiting plate 12, which is slidably connected inside the groove 10. The insert 4 is provided with a limiting groove 15 that matches the limiting plate 12. The side of the limiting plate 12 away from the second spring 11 is inserted into the limiting groove 15. The groove 10 provides a sliding guide for the limiting plate 12. The second spring 11 always applies a pushing force to the limiting plate 12 towards the slot 3. When the insert 4 is inserted into the slot 3 and triggers the limiting plate 12, the limiting plate 12 can be slidably inserted into the limiting groove 15, achieving quick locking with the insert 4.

[0027] The limiting plate 12 has a guide groove 13 and a limiting hole 14 inside, and the limiting hole 14 is connected to the bottom end of the guide groove 13. A support block 8 is fixedly connected to the outer surface of the moving plate 5. A limiting rod 9 is fixedly connected to the side of the support block 8 near the insert block 4, and the other end of the limiting rod 9 is slidably inserted into the guide groove 13. In the initial state, the limiting rod 9 is inserted into the limiting hole 14, temporarily restricting the movement of the limiting plate 12. When the insert block 4 is fully inserted into the slot 3, the limiting rod 9 disengages from the limiting hole 14, and the limiting plate 12 pops out and inserts into the limiting groove 15 under the action of the second spring 11, thus locking it. During the movement of the limiting plate 12, the guide groove 13 and the limiting rod 9 can further slide and guide it.

[0028] Working principle: When connecting the precast beam 1 and the precast wall panel body 2, the insert 4 is first inserted into the slot 3 of the precast beam 1. The insert 4 pushes the moving plate 5 to slide towards the round hole 6, compressing the first spring 7. At the same time, the moving plate 5 drives the limiting rod 9 to slide in the limiting hole 14 through the support block 8.

[0029] When the insert 4 is inserted to its maximum depth, the limiting rod 9 moves out of the limiting hole 14, releasing the restriction on the limiting plate 12. At this time, the second spring 11 pushes the limiting plate 12 to slide along the slide groove 10, so that the end of the limiting plate 12 is inserted into the limiting groove 15 of the insert 4, completing the mechanical locking of the insert 4 and preventing it from axially disengaging.

[0030] Then, the flange 16 is fixed to the pre-embedded bolt 17 by the nut 18 to further strengthen the connection between the precast beam 1 and the precast wall panel body 2. Finally, concrete is poured in the installation groove, slot 3 and surrounding gaps to make the components form a whole and ultimately achieve a high-strength and stable connection effect.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connection structure of a prefabricated floor slab comprising a prefabricated beam (1) and a prefabricated wall slab body (2), characterized in that: The precast beam (1) has a slot (3) and a round hole (6) inside, and the slot (3) and the round hole (6) are connected. A movable plate (5) is slidably connected inside the slot (3). A first spring (7) is fixedly connected to one side of the movable plate (5). The other end of the first spring (7) is fixedly connected to the inner wall of the round hole (6). A plug (4) is fixedly connected to the side of the precast wall panel body (2) near the precast beam (1). The plug (4) is slidably connected inside the slot (3) and abuts against the side of the movable plate (5) away from the first spring (7). A limiting mechanism is provided inside the precast beam (1). The limiting mechanism is used to fix the plug (4).

2. The connection structure of a precast floor slab according to claim 1, characterized in that, The limiting mechanism includes a groove (10) opened inside the precast beam (1), and the groove (10) is connected to the slot (3). A second spring (11) is fixedly connected inside the groove (10), and a limiting plate (12) is fixedly connected to the other end of the second spring (11), and the limiting plate (12) is slidably connected inside the groove (10).

3. The connection structure of a precast floor slab according to claim 2, characterized in that, The insert (4) has a limiting groove (15) that is adapted to the limiting insert plate (12) inside, and the side of the limiting insert plate (12) away from the second spring (11) is inserted into the limiting groove (15).

4. The connection structure of a precast floor slab according to claim 2, characterized in that, The limiting plate (12) has a guide groove (13) and a limiting hole (14) inside, and the limiting hole (14) is connected to the bottom end of the guide groove (13).

5. The connection structure of a precast floor slab according to claim 4, characterized in that, The outer surface of the movable plate (5) is fixedly connected to a support block (8), and the side of the support block (8) near the insert block (4) is fixedly connected to a limiting rod (9), and the other end of the limiting rod (9) is slidably inserted into the inside of the guide groove (13).

6. The connection structure of a precast floor slab according to claim 1, characterized in that, The precast beam (1) has an installation groove inside, and the outer surface of the precast wall panel body (2) is fixedly connected with a flange (16), and the flange (16) is inserted into the installation groove.

7. The connection structure of a precast floor slab according to claim 6, characterized in that, The mounting groove is fixedly connected with a pre-embedded bolt (17), the other end of which slides through the flange (16), and the thread of the pre-embedded bolt (17) located outside the flange (16) is tightened with a nut (18).

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