Building stair and floor connecting and fixing device

Abstract

The utility model relates to the technical field of house building, and discloses a house building stair and floor connecting and fixing device which comprises a stair body, a floor body is arranged at one end of the stair body, a plurality of reinforcing steel bars are fixedly installed at the end, close to the floor body, of the floor body, and a plurality of penetrating holes are formed in the end, close to the stair body, of the floor body. The stair body is provided with a plurality of through holes, a plurality of reinforcing steel bars are arranged in the through holes, the reinforcing steel bars penetrate through the adjacent through holes, and mold frames are arranged on the two sides of the adjacent ends of the floor body and the stair body. And then concrete is filled in gaps among the inner wall of the mold frame, the stair body and the floor body, connection between the stair body and the floor body can be achieved, combined connection of concrete filling and steel bar connection is achieved, and the tensile strength and the overall stability of the structure can be remarkably improved through combination of steel bars and the concrete.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a connecting and fixing device for a building staircase and a floor slab. Background Technique

[0002] A staircase is a building structure used to connect different floors or horizontal levels. It can provide a vertical passage route and a convenient way to go up and down. In case of emergencies such as fires or earthquakes, the staircase is usually the main evacuation route, which can help people leave the building safely and quickly. When installing a precast staircase on a floor slab, a connecting and fixing device for a building staircase and a floor slab is required.

[0003] In the patent with the publication number of CN 215368570 U, a precast staircase and a connecting structure between the staircase and a floor slab are disclosed. The adjusting structure includes a first bottom plate, an adjusting box, a first turning handle, a second turning handle, a connecting plate, a first gear, a first adjusting bar, a first spring, a second adjusting bar, and a second spring; a fixing structure, the fixing structure is fixed on the top surfaces at both ends of the staircase, and the fixing structure includes a second bottom plate, a fixing box, a third turning handle, a connecting rod, a nut, and a second gear; a clamping structure, the clamping structure is installed inside the fixing box. The precast staircase and the connecting structure between the staircase and a floor slab provided by the utility model have the advantage of being convenient and fast for fine adjustment.

[0004] Although the above technology can connect the staircase and the floor slab through a mechanical mechanism and can be finely adjusted, the connection by the mechanical structure is affected by vibration and load during long-term use, resulting in loosening or failure of the connection points, thus causing stability problems between the staircase and the floor slab, and affecting the safety of the entire structure. Therefore, it has certain limitations, so innovation is carried out on this technology. Content of the Utility Model

[0005] The purpose of the utility model is to provide a connecting and fixing device for a building staircase and a floor slab to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A connecting and fixing device for a building staircase and a floor slab, including a staircase body, one end of the staircase body is provided with a floor slab body, a plurality of reinforcing steel bars are fixedly installed at one end of the floor slab body close to the floor slab body, a plurality of through holes are opened at one end of the floor slab body close to the staircase body, and a plurality of the reinforcing steel bars penetrate through the adjacent through holes. Mould frames are arranged on both sides of the adjacent ends of the floor slab body and the staircase body, and extension blocks are fixedly installed at the four corners on both sides of the two mould frames.

[0007] As a preferred technical solution of the present utility model, the surfaces of the two mold frames are all mutually extruded between the adjacent staircase body and the floor slab body.

[0008] As a preferred technical solution of the present utility model, one group of the extension blocks is threadedly connected to the staircase body through the provided bolts, and the other group of the extension blocks is threadedly connected to the floor slab body through the provided bolts.

[0009] As a preferred technical solution of the present utility model, a fixing plate is fixedly installed at one end of one of the mold frames, and a fixing groove is formed at one end of the other mold frame. The outer wall of the fixing plate is snap-fitted with the inner wall of the fixing groove.

[0010] As a preferred technical solution of the present utility model, there is a certain gap between the staircase body and the floor slab body, and the inner walls of the two mold frames are mutually away from the adjacent staircase body and the floor slab body.

[0011] As a preferred technical solution of the present utility model, slots are formed at the back of the bottoms of the two mold frames, and inserting plates are snap-fitted to the inner walls of the two slots.

[0012] As a preferred technical solution of the present utility model, threaded sleeves are fixedly installed in the middle of the bottoms of the two inserting plates, screw rods are threadedly connected to the inner walls of the two threaded sleeves, and supporting cushion plates are rotatably connected to the bottoms of the two screw rods through the provided rotating shafts.

[0013] As a preferred technical solution of the present utility model, the two threaded sleeves have the same size, the two screw rods have the same size, and the two supporting cushion plates have the same size.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] After the staircase body and the floor slab body are connected by the mold frame in the present utility model, the reinforcing steel bars are inserted into the interior of the floor slab body, and then concrete is filled in the inner walls of the mold frame and the gaps between the staircase body and the floor slab body, so as to realize the connection between the staircase body and the floor slab body, and realize the combined connection of concrete filling and steel bar connection. The combination of the steel bars and the concrete can significantly improve the tensile strength and overall stability of the structure. The reinforcing steel bars provide good tensile support, while the concrete provides compressive strength. The combination of the two can effectively resist various loads on the staircase and the floor slab, thus improving the connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 Schematic diagram of the disassembled structure of the utility model

[0018] Figure 3 Schematic diagram of the partial disassembled structure of the utility model

[0019] In the figure: 1, staircase body; 2, floor slab body; 3, reinforcing steel bars; 4, mold frame; 5, fixing plate; 6, fixing groove; 7, extension block; 8, slot; 9, insertion plate; 10, threaded sleeve; 11, screw; 12, supporting cushion plate Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model Embodiment

[0021] Please refer to Figures 1 - 3 , the present utility model provides a technical solution

[0022] A connecting and fixing device for a building staircase and a floor slab includes a staircase body 1. One end of the staircase body 1 is provided with a floor slab body 2. A plurality of reinforcing steel bars 3 are fixedly installed at one end of the floor slab body 2 close to the floor slab body 2. A plurality of through holes are formed at one end of the floor slab body 2 close to the staircase body 1. All the plurality of reinforcing steel bars 3 penetrate through the adjacent through holes. Mold frames 4 are provided on both sides of the adjacent ends of the floor slab body 2 and the staircase body 1. Extension blocks 7 are fixedly installed at the four corners on both sides of the two mold frames 4. Through the connection between the reinforcing steel bars 3 and the through holes, the steel bar connection between the staircase body 1 and the floor slab body 2 can be realized. By pouring concrete inside the mold frames 4, the concrete connection between the staircase body 1 and the floor slab body 2 can be realized. The combined use of the two connection methods can significantly improve the tensile strength and overall stability of the structure and improve the overall safety. The surfaces of the two mold frames 4 are mutually pressed against the adjacent staircase body 1 and the floor slab body 2

[0023] In this embodiment, one set of extension blocks 7 is threadedly connected to the staircase body 1 through the provided bolts, and the other set of extension blocks 7 is threadedly connected to the floor slab body 2 through the provided bolts. The extension blocks 7 and the bolts serve to assist in installing the two mold frames 4 between the staircase body 1 and the floor slab body 2. One end of one mold frame 4 is fixedly installed with a fixing plate 5, and a fixing groove 6 is formed at one end of the other mold frame 4. The outer wall of the fixing plate 5 is snap-fitted with the inner wall of the fixing groove 6. The connection between the fixing plate 5 and the fixing groove 6 serves to fix the adjacent ends of the two mold frames 4 to each other. After the concrete is poured and dried, it can be disassembled in the same way, so it is convenient for use in subsequent other construction sites.

[0024] In this embodiment, there is a certain gap between the staircase body 1 and the floor slab body 2. The inner walls of the two mold frames 4 are away from the adjacent staircase body 1 and floor slab body 2. The provided gap serves to assist in pouring concrete, enabling the concrete slurry to pour on the reinforcement bars 3. After wrapping the reinforcement bars 3, it can significantly improve the bearing capacity and compressive strength of the overall structure.

[0025] In this embodiment, slots 8 are formed on the back surfaces of the bottoms of the two mold frames 4. The inner walls of the two slots 8 are snap-fitted with insertion plates 9. The detachable design of the insertion plates 9 can meet the support of the mold frames 4 and can also be removed when not in use. The middle parts of the bottoms of the two insertion plates 9 are fixedly installed with threaded sleeves 10. The inner walls of the two threaded sleeves 10 are threadedly connected with screw rods 11. The bottoms of the two screw rods 11 are rotationally connected to support pads 12 through the provided rotating shafts. The sizes of the two threaded sleeves 10 are the same, the sizes of the two screw rods 11 are the same, and the sizes of the two support pads 12 are the same. By rotating the screw rods 11 threadedly, they can be driven to rotate and lift within the threaded sleeves 10, thus achieving the function of adjusting the length. Through the support of the support pads 12 on the ground, the support operation for staircases of different heights can be satisfied.

[0026] Working principle: During use, bring the staircase body 1 and the floor slab body 2 closer so that the reinforcement bars 3 pass through the perforations. Then bring the two mold frames 4 closer so that the fixing plate 5 is snap-fitted with the inner wall of the fixing groove 6. Fix the extension blocks 7 provided on the mold frames 4 between the staircase body 1 and the floor slab body 2 through bolts. At this time, pour concrete into the gap between the staircase body 1 and the floor slab body 2. The concrete flows to fill the inner walls of the mold frames 4, realizing the concrete connection between the staircase body 1 and the floor slab body 2. When waiting for the concrete to dry, the insertion plates 9 can be inserted into the inner walls of the slots 8. By rotating the screw rods 11 threadedly within the threaded sleeves 10 to drive the support pads 12 to press against the ground, the support and lifting of the mold frames 4 are realized, so the stability of the concrete before drying can be ensured. Subsequently, the insertion plates 9 can be disassembled.

[0027] In the description of the present utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0028] In the present utility model, unless otherwise clearly specified and defined, for example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A connecting and fixing device for a building staircase and a floor slab, comprising a staircase body (1), characterized in that: One end of the staircase body (1) is provided with a floor slab body (2). A plurality of reinforcing steel bars (3) are fixedly installed at one end of the floor slab body (2) close to the floor slab body (2). A plurality of through holes are formed at one end of the floor slab body (2) close to the staircase body (1). A plurality of the reinforcing steel bars (3) penetrate through the adjacent through holes. Mold frames (4) are arranged on both sides of the adjacent ends of the floor slab body (2) and the staircase body (1). Extension blocks (7) are fixedly installed at the four corners on both sides of the two mold frames (4).

2. The connection and fixing device for a building staircase and floor slab according to claim 1, characterized in that: The surfaces of the two mold frames (4) are mutually extruded with the adjacent staircase body (1) and floor slab body (2).

3. A connecting and fixing device for a building staircase and floor slab according to claim 1, characterized in that: One set of the extension blocks (7) is threadedly connected to the staircase body (1) through bolts provided, and the other set of the extension blocks (7) is threadedly connected to the floor slab body (2) through bolts provided.

4. A connection and fixing device for a building staircase and a floor according to claim 1, characterized in that: One end of one of the mold frames (4) is fixedly installed with a fixing plate (5), and a fixing groove (6) is formed at one end of the other mold frame (4). The outer wall of the fixing plate (5) is snap-fitted with the inner wall of the fixing groove (6).

5. The connecting and fixing device for a building staircase and a floor according to claim 1, characterized in that: There is a certain gap between the staircase body (1) and the floor slab body (2). The inner walls of the two mold frames (4) are mutually away from the adjacent staircase body (1) and floor slab body (2).

6. The connection and fixing device for a building staircase and floor according to claim 1, characterized in that: Slots (8) are formed at the back of the bottoms of the two mold frames (4). Plug plates (9) are snap-fitted in the inner walls of the two slots (8).

7. A connection and fixing device for a building staircase and a floor according to claim 6, characterized in that: Threaded sleeves (10) are fixedly installed in the middle of the bottoms of the two plug plates (9). Screws (11) are threadedly connected in the inner walls of the two threaded sleeves (10). The bottoms of the two screws (11) are rotationally connected to supporting cushion plates (12) through rotating shafts provided.

8. A connecting and fixing device for a building staircase and a floor according to claim 7, characterized in that: The sizes of the two threaded sleeves (10) are the same, the sizes of the two screws (11) are the same, and the sizes of the two supporting cushion plates (12) are the same.

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