Prefabricated stair applied to light reinforced concrete

Abstract

The utility model relates to the technical field of prefabricated stairs, in particular to a prefabricated stair applied to light reinforced concrete, which comprises a stair body, a reinforcement cage is arranged in the stair body, first protective frames are arranged on two sides of the bottom of the stair body, and a plurality of connecting blocks are mounted at the bottom of each first protective frame. Strip-shaped plates are installed at the close ends of each pair of connecting blocks, every two adjacent strip-shaped plates are stacked together, a strip-shaped through groove is formed in the side face of each strip-shaped plate, a second fastening bolt is arranged on one side of each strip-shaped plate, and one end of each second fastening bolt penetrates through the two corresponding strip-shaped through grooves and extends into the stair body. The edges of the two sides of the stair body can be protected through the first protection frame and the second protection frame, then the edge of the top of the stair body can be protected through the strip-shaped protection plate, and the edges of the stair body are prevented from being damaged in the transportation and installation process.

Description

Technical Field

[0001] The utility model relates to the technical field of precast stairs, in particular to a precast stair applied to light reinforced concrete. Background Art

[0002] As a component for vertical traffic between floors, stairs are widely used in buildings and furniture decoration. In the current construction industry, stairs are generally precast directly in the factory and then transported to the construction site for installation after precasting.

[0003] Existing precast stairs generally pour concrete on a steel bar framework. However, since there is no protection mechanism at the edge of the stairs, the corners of the stairs are easily damaged by external forces during transportation or installation, and the protection effect is poor. Moreover, during use, stains will adhere to the surface of the stairs. Due to the stepped shape of the stairs, cleaning dead corners will be generated during cleaning, and the use effect is poor. For this reason, we propose a precast stair applied to light reinforced concrete. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages in the prior art and propose a precast stair applied to light reinforced concrete.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: design a precast stair applied to light reinforced concrete, including a stair body, and a steel bar framework is arranged inside the stair body;

[0006] First protection frames are arranged on both sides of the bottom of the stair body, and a plurality of connecting blocks are installed at the bottom of each first protection frame. The adjacent ends of each pair of connecting blocks are provided with strip plates, and the adjacent two strip plates are stacked together;

[0007] Strip-shaped through grooves are formed on the side surface of each strip plate, and a second fastening bolt is arranged on one side of the strip plate. One end of the second fastening bolt penetrates through the two strip-shaped through grooves and extends into the stair body;

[0008] Second protection frames are arranged on both sides of the top of the stair body, and each second protection frame is arranged in a stepped manner. A plurality of strip-shaped protection plates are connected to the tops of the two second protection frames through a detachable mechanism. The two ends of the bottom of each strip-shaped protection plate are placed on the second protection frame. The bottom of the strip-shaped protection plate is arranged in an "L" shape, and the bottom of each strip-shaped protection plate is in contact with the stepped edge of the top of the stair body;

[0009] A second isolation plate is further arranged on the top of the stair body, and a first isolation plate is vertically arranged on one side of the second isolation plate. The first isolation plate and the second isolation plate both cover the top of the stair body;

[0010] On both sides of the first partition board, second magnetic attraction blocks are installed. When the side surface of the first partition board contacts the vertical surface at the top of the staircase body, the second magnetic attraction blocks are adsorbed and fixed on the side surface of the second protection frame.

[0011] On both sides at the top of the second partition board, connecting plates are installed. On the horizontal plane at the top of each second protection frame, accommodation grooves are provided. One end of each connecting plate extends into the corresponding accommodation groove, and at the bottom of each connecting plate, a first magnetic attraction block is installed. The bottom of the first magnetic attraction block extends into the groove provided at the bottom end of the accommodation groove, and the first magnetic attraction block is adsorbed and fixed together with the inner wall of the groove.

[0012] Preferably, the detachable structure includes that fixing blocks are installed at both ends of each strip-shaped protection board. The side surface of the fixing block contacts the side surface of the second protection frame, and at both ends of each fixing block, first fastening bolts are provided. One end of the first fastening bolt penetrates through the fixing block and the second protection frame, and the end of the first fastening bolt extends into the staircase body.

[0013] Preferably, on the sides of the first partition board and the second partition board away from the staircase body, they are flush with the edge of the second protection frame.

[0014] Preferably, on the sides of the first protection frame and the second protection frame close to the staircase body, opening grooves matching the edge of the staircase body are provided. The opening grooves are sleeved on the side surface of the staircase body.

[0015] Preferably, the edges of the first partition board and the second partition board are in clearance fit with the side surface of the second protection frame.

[0016] Preferably, the dimension of the end of the second fastening bolt away from the staircase body is larger than the width of the strip-shaped through groove.

[0017] Preferably, buffer pads are provided on the inner surface of the opening groove and the bottom of the strip-shaped protection board.

[0018] In the design solution proposed by the present utility model, during the application process, its beneficial effects are as follows:

[0019] 1. The two side edges of the staircase body can be protected by the first protection frame and the second protection frame, and the top edge of the staircase body can be protected by the strip-shaped protection board, avoiding damage to the edges of the staircase body during transportation and installation.

[0020] 2. The top of the staircase body can be covered by the first partition board and the second partition board, so that stains during use will not adhere to the surface of the staircase body. And when cleaning is required, the first partition board and the second partition board can be directly removed from the staircase body for cleaning. The cleaning is thorough, without cleaning dead corners, improving the use effect. Description of the Drawings

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is a structural schematic diagram of the first partition board and the second partition board of the present utility model;

[0023] Figure 3 is a structural schematic diagram of the first protective frame and the second protective frame of the present utility model;

[0024] Figure 4 is a structural schematic diagram of the strip board of the present utility model;

[0025] Figure 5 is a structural schematic diagram of the staircase body of the present utility model.

[0026] In the figure: 1. First protective frame; 2. Staircase body; 3. Second protective frame; 4. Fixed block; 5. First fastening bolt; 6. Connecting plate; 7. Accommodating groove; 8. Strip-shaped protective plate; 9. First partition board; 10. Second partition board; 11. First magnetic attraction block; 12. Strip board; 13. Groove; 14. Opening groove; 15. Steel bar skeleton; 16. Second magnetic attraction block; 17. Connecting block; 18. Strip-shaped through groove; 19. Second fastening bolt. Specific embodiments

[0027] 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.

[0028] Refer to Figures 1 - 5 , a precast staircase applied to lightweight reinforced concrete, including a staircase body 2, and a steel bar skeleton 15 is arranged inside the staircase body 2. As Figure 5 shown, the steel bar skeleton 15 can increase the structural strength and toughness of the staircase body 2, and prevent the staircase body 2 from breaking during use.

[0029] As Figure 1 , Figure 3 and Figure 4As shown in the figure, first protective frames 1 are provided on both sides of the bottom of the staircase body 2. A plurality of connecting blocks 17 are installed at the bottom of each first protective frame 1. Strip-shaped plates 12 are installed at the adjacent ends of each pair of connecting blocks 17, and the adjacent two strip-shaped plates 12 are stacked together. Strip-shaped through grooves 18 are formed on the side surface of each strip-shaped plate 12. A second fastening bolt 19 is provided on one side of the strip-shaped plate 12. One end of the second fastening bolt 19 passes through the two strip-shaped through grooves 18 and extends into the staircase body 2. During installation, the two first protective frames 1 can be brought into contact with both sides of the bottom of the staircase body 2, so that each pair of corresponding strip-shaped plates 12 are stacked together. Then, one end of the second fastening bolt 19 is passed through the two strip-shaped through grooves 18 and fixed to the staircase body 2, and the two first protective frames 1 can be fixed to the staircase body 2 to protect the staircase body 2.

[0030] It should be noted that, as Figure 4 shown, the dimension of the end of the second fastening bolt 19 far from the staircase body 2 is larger than the width of the strip-shaped through groove 18. In this way, during the installation process, the two strip-shaped plates 12 can be fixed to the bottom of the staircase body 2 through the second fastening bolt 19.

[0031] As Figure 1 and Figure 3 shown, second protective frames 3 are provided on both sides of the top of the staircase body 2, and each second protective frame 3 is arranged in a stepped manner. A plurality of strip-shaped protective plates 8 are connected to the tops of the two second protective frames 3 through a detachable mechanism. The detachable structure includes fixing blocks 4 installed at both ends of each strip-shaped protective plate 8. The side surface of the fixing block 4 is in contact with the side surface of the second protective frame 3, and first fastening bolts 5 are provided at both ends of each fixing block 4. One end of the first fastening bolt 5 passes through the fixing block 4 and the second protective frame 3, and the end of the first fastening bolt 5 extends into the staircase body 2. During actual installation, after the strip-shaped protective plate 8 is placed at the preset position of the second protective frame 3, the side surface of the fixing block 4 is in contact with the side surface of the second protective frame 3. Then, the fixing block 4 and the second protective frame 3 are fixed to the staircase body 2 through the first fastening bolt 5, and the fixing is firm.

[0032] As Figure 1 shown, both ends of the bottom of each strip-shaped protective plate 8 are placed on the second protective frame 3. The bottom of the strip-shaped protective plate 8 is arranged in an "L" shape, and the bottom of each strip-shaped protective plate 8 is in contact with the stepped edge of the top of the staircase body 2. During actual use, the top edge part of the staircase body 2 can be protected through the second protective frame 3 and the strip-shaped protective plate 8. In this way, the top edge of the staircase body 2 will not be damaged during transportation or installation.

[0033] As Figure 1 and Figure 2As shown in the figure, a second isolation plate 10 is further provided at the top of the staircase body 2. A first isolation plate 9 is vertically provided on one side of the second isolation plate 10. Both the first isolation plate 9 and the second isolation plate 10 cover the top of the staircase body 2. During actual use, the first isolation plate 9 and the second isolation plate 10 can block the top of the staircase body 2, so that stains during use will not adhere to the surface of the staircase body 2. And during cleaning, as long as the first isolation plate 9 and the second isolation plate 10 are removed for cleaning, there will be no cleaning dead corners.

[0034] It should be noted that the edges of both the first isolation plate 9 and the second isolation plate 10 are in clearance fit with the side surface of the second protection frame 3. In this way, during use, stains will not fall on the surface of the staircase body 2 from the gap between the edges of the first isolation plate 9 and the second isolation plate 10 and the side surface of the second protection frame 3, which is convenient for cleaning.

[0035] As Figure 2 shown in the figure, second magnetic attraction blocks 16 are installed on both sides of the first isolation plate 9. When the side surface of the first isolation plate 9 contacts the vertical surface at the top of the staircase body 2, the second magnetic attraction blocks 16 are adsorbed and fixed on the side surface of the second protection frame 3. The first isolation plate 9 can be adsorbed and fixed on the second protection frame 3 through the second magnetic attraction blocks 16, so that the first isolation plate 9 can block the vertical surface at the top of the staircase body 2, and the installation is convenient.

[0036] As Figure 1 and Figure 2 shown in the figure, connecting plates 6 are installed on both sides at the top of the second isolation plate 10. A receiving groove 7 is opened on the horizontal plane at the top of each second protection frame 3. One end of each connecting plate 6 extends into the corresponding receiving groove 7, and a first magnetic attraction block 11 is installed at the bottom of each connecting plate 6. The bottom of the first magnetic attraction block 11 extends into a groove 13 opened at the bottom end of the receiving groove 7, and the first magnetic attraction block 11 is adsorbed and fixed together with the inner wall of the groove 13. During actual use, through the cooperation of the first magnetic attraction block 11 and the groove 13, the connecting plate 6 can be fixed in the receiving groove 7, so that the second isolation plate 10 can be fixed on the horizontal plane at the top of the staircase body 2, and the fixing is convenient.

[0037] Specifically, when the utility model is installed, the staff can move the two first protection frames 1 to both sides of the bottom of the staircase body 2, so that the corresponding strip plates 12 are stacked together, and the strip through grooves 18 on the corresponding two strip plates 12 are communicated. Then, the staff passes the second fastening bolt 19 through the strip through groove 18 and screws it into the staircase body 2 to fix the first protection frame 1. Then, the two second protection frames 3 are placed on the top of the staircase body 2. Then, the strip protection plate 8 is placed at a preset position on the top of the second protection frame 3, so that the bottom of the strip protection plate 8 contacts the top edge of the staircase body 2. At the same time, the sides of the fixing blocks 4 installed at both ends of the bottom of the strip protection plate 8 contact the sides of the second protection frame 3. Then, the staff passes the first fastening bolt 5 through the fixing block 4 and the second protection frame 3 and screws it into the staircase body 2 to fix the second protection frame 3 and the strip protection plate 8, thus completing the protection of the edge of the staircase body 2. Then, the first isolation plate 9 is moved to the vertical surface at the top of the staircase body 2, so that the side of the first isolation plate 9 contacts the vertical surface at the top of the staircase body 2. At the same time, the second magnetic attraction blocks 16 on both sides of the first isolation plate 9 are adsorbed and fixed on the second protection frame 3. Then, the second isolation plate 10 is placed on the horizontal surface at the top of the staircase body 2, so that the connecting blocks 17 on both sides of the second isolation plate 10 are moved into the receiving grooves 7 at the top of the second protection frame 3, and the first magnetic attraction blocks 11 on the connecting blocks 17 are moved into the grooves 13, so that the connecting blocks 17 can be fixed in the receiving grooves 7, and at the same time, the second isolation plate 10 is fixed on the staircase body 2. The first isolation plate 9 and the second isolation plate 10 can block the surface of the staircase body 2, preventing stains from adhering to the surface of the staircase body 2, which is convenient for cleaning.

[0038] Furthermore, as Figure 1 shown, the sides of the first isolation plate 9 and the second isolation plate 10 away from the staircase body 2 are flush with the edges of the second protection frame 3, so that the top of the staircase body 2 can be kept flat and will not cause interference to pedestrians.

[0039] Furthermore, as Figure 3 shown, the sides of the first protection frame 1 and the second protection frame 3 close to the staircase body 2 are both provided with opening grooves 14 matching the edges of the staircase body 2, and the opening grooves 14 are sleeved on the side surface of the staircase body 2, so that the first protection frame 1 and the second protection frame 3 can wrap the edges of the staircase body 2, improving the protection effect on the staircase body 2.

[0040] Furthermore, buffer pads are provided on the inner surface of the opening groove 14 and the bottom of the strip protection plate 8. The buffer pads are made of buffer rubber or other buffer materials with buffer performance. The buffer pads can buffer and protect the edges of the staircase body 2, further improving the protection effect of the first protection frame 1 and the second protection frame 3.

[0041] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A precast staircase applied to light reinforced concrete, comprising a staircase body (2), characterized in that: Inside the staircase body (2), there is a steel bar framework (15); On both sides of the bottom of the staircase body (2), there are first protective frames (1). At the bottom of each first protective frame (1), a number of connecting blocks (17) are installed. At the adjacent ends of each pair of connecting blocks (17), a strip-shaped plate (12) is installed, and two adjacent strip-shaped plates (12) are stacked together; On the side of each strip-shaped plate (12), a strip-shaped through groove (18) is opened. On one side of the strip-shaped plate (12), there is a second fastening bolt (19). One end of the second fastening bolt (19) passes through two strip-shaped through grooves (18) and extends into the staircase body (2); On both sides of the top of the staircase body (2), there are second protective frames (3). And each second protective frame (3) is arranged in a stepped manner. At the top of the two second protective frames (3), a number of strip-shaped protective plates (8) are connected by a detachable mechanism. At both ends of the bottom of each strip-shaped protective plate (8), they are placed on the second protective frame (3). The bottom of the strip-shaped protective plate (8) is set in an "L" shape, and the bottom of each strip-shaped protective plate (8) is in contact with the stepped edge at the top of the staircase body (2); At the top of the staircase body (2), there is also a second isolation plate (10). On one side of the second isolation plate (10), a first isolation plate (9) is vertically arranged. Both the first isolation plate (9) and the second isolation plate (10) cover the top of the staircase body (2); On both sides of the first isolation plate (9), second magnetic attraction blocks (16) are installed. When the side of the first isolation plate (9) contacts the vertical surface at the top of the staircase body (2), the second magnetic attraction blocks (16) are adsorbed and fixed on the side of the second protective frame (3); On both sides of the top of the second isolation plate (10), connecting plates (6) are installed. On the horizontal plane at the top of each second protective frame (3), a receiving groove (7) is opened. One end of each connecting plate (6) extends into the corresponding receiving groove (7). And at the bottom of each connecting plate (6), a first magnetic attraction block (11) is installed. The bottom of the first magnetic attraction block (11) extends into a groove (13) opened at the bottom end of the receiving groove (7), and the first magnetic attraction block (11) is adsorbed and fixed together with the inner wall of the groove (13).

2. The precast staircase applied to lightweight reinforced concrete according to claim 1, characterized in that: The detachable structure includes that at both ends of each strip-shaped protective plate (8), fixing blocks (4) are installed. The side of the fixing block (4) contacts the side of the second protective frame (3). And at both ends of each fixing block (4), there are first fastening bolts (5). One end of the first fastening bolt (5) passes through the fixing block (4) and the second protective frame (3), and the end of the first fastening bolt (5) extends into the staircase body (2).

3. The precast staircase applied to light reinforced concrete according to claim 2, wherein: On the side of the first isolation plate (9) and the second isolation plate (10) away from the staircase body (2), they are flush with the edge of the second protective frame (3).

4. A precast staircase applied to lightweight reinforced concrete according to claim 1, characterized in that: On the side of the first protective frame (1) and the second protective frame (3) close to the staircase body (2), opening grooves (14) matching the edge of the staircase body (2) are opened. The opening grooves (14) are sleeved on the side of the staircase body (2).

5. A precast staircase applied to lightweight reinforced concrete according to claim 1, characterized in that: The edges of the first isolation plate (9) and the second isolation plate (10) are in clearance fit with the side of the second protective frame (3).

6. A precast staircase applied to lightweight reinforced concrete according to claim 1, characterized in that: One end of the second fastening bolt (19) away from the staircase body (2) is larger in size than the width of the strip-shaped through groove (18).

7. A precast staircase applied to lightweight reinforced concrete according to claim 1, characterized in that: Buffer pads are provided on both the inner surface of the opening groove (14) and the bottom of the strip-shaped protection plate (8).

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