Prefabricated staircase for assembled building

Abstract

The utility model discloses a prefabricated staircase of an assembled building, wherein the inclined surface of the staircase inclined beam is equidistantly cast with steps, the top edge end of the staircase inclined beam is integrally cast with a top extension plate, and the bottom edge end of the staircase inclined beam is integrally cast with a bottom extension plate. The utility model provides a top extension plate and a bottom extension plate at both ends of the staircase inclined beam, so as to facilitate extending the two ends of the staircase, and at the same time cooperates with a driving mechanism composed of an end ear plate, a limiting guide column, a driving screw, a limiting disk, a threaded connection seat and an embedded nut seat, so as to facilitate convenient driving and adjustment of the adjustment pads at the bottom of the top extension plate and the bottom extension plate, so that when the top extension plate and the bottom extension plate are installed and connected, their bottoms can be more tightly and stably connected to the building body through the adjustment pads, so that adaptive adjustment can be made according to needs, thereby improving the stability of the stairs after assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to a prefabricated staircase of an assembled building. Background Art

[0002] Prefabricated buildings refer to buildings that transfer a large amount of on-site work in traditional construction methods to factories, where building components and accessories such as floor slabs, wall panels, stairs, balconies, etc. are processed and manufactured in factories, transported to construction sites, and assembled and installed on site through reliable connection methods. As one of the most important components of a building, stairs are mostly constructed using traditional cast-in-place methods. With the rise of prefabricated housing, more and more projects choose to use prefabricated stairs instead of traditional cast-in-place stairs. Prefabricated stairs are not only more beautiful than cast-in-place stairs, but also can improve construction efficiency;

[0003] The ends of the current prefabricated stairs are fixed structures, so when the prefabricated stairs are installed, the ends cannot be effectively and tightly connected with the floors and floors of different buildings, which reduces the installation stability of the prefabricated stairs. The adjustment method using pads is not only cumbersome and difficult to adjust, but also not conducive to the rapid installation of the prefabricated stairs. Utility Model Content

[0004] The utility model provides a prefabricated staircase for an assembled building, which can effectively solve the problem in the above-mentioned background technology that the ends of the current prefabricated stairs are fixed and formed structures, so when the prefabricated stairs are installed, the ends cannot be effectively and tightly connected with the floor slabs and floors of different buildings, thereby reducing the installation stability of the prefabricated stairs. The method of adjusting by pads is not only cumbersome to operate and difficult to adjust, but also not conducive to the rapid installation of the prefabricated stairs.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated staircase of an assembled building, comprising a staircase inclined beam, the inclined surface of the staircase inclined beam is cast with steps at equal intervals, the top edge of the steps is evenly provided with anti-slip strips, the two side ends of the steps are fixedly connected with handrail seats, the top edge of the staircase inclined beam is integrally cast with a top extension plate, the bottom edge of the staircase inclined beam is integrally cast with a bottom extension plate, the edges of the top extension plate and the bottom extension plate are evenly provided with fixing holes, and the middle ends of the two side edges of the top extension plate and the bottom extension plate are fixedly connected with end ear plates;

[0006] The bottom of one end ear plate of the top extension plate and the bottom extension plate is fixedly connected to a limiting guide column, the inside of the other end ear plate of the top extension plate and the bottom extension plate is connected to a driving screw, the bottom ends of the limiting guide column and the driving screw are fixedly connected to a limiting disk, the bottoms of the top extension plate and the bottom extension plate are both adjustably connected to an adjusting pad, and a threaded connection seat is fixedly connected to one side edge of the adjusting pad corresponding to the driving screw;

[0007] Guide grooves are symmetrically provided on both side ends of the stair inclined beam corresponding to the edge positions of the adjustment pads, and connecting guide blocks are fixedly connected to the edge ends of the adjustment pads. An engaging groove is provided on the top side of the top extension plate and the bottom extension plate corresponding to the driving screw, and the embedded nut seat fixedly connected to the top end of the driving screw is embedded in the engaging groove for rotation.

[0008] Preferably, the staircase inclined beam, steps, handrail seat, top extension plate and bottom extension plate are all cast in one piece, and steel bars are arranged inside the staircase inclined beam, top extension plate and bottom extension plate.

[0009] Preferably, the threaded connection seat is connected to the threaded connection seat inside the adjusting pad by threads, and the limiting guide column is connected to the adjusting pad by sliding.

[0010] Preferably, the adjusting pad is connected to the guide slide groove by a connecting guide block at its edge.

[0011] Preferably, a bottom mounting groove is provided at the bottom of the adjusting pad, the inner bottom surface of the bottom mounting groove is equidistantly connected with rubber pressing blocks, and both side edges of the bottom of the adjusting pad are equidistantly connected with limiting tooth pins.

[0012] Preferably, the sum of the thicknesses of the adjusting pad and the rubber pressing block is greater than the length of the limiting guide column and the driving screw, and the rubber pressing block is a wear-resistant rubber block.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a scientific and reasonable structure and is safe and convenient to use:

[0014] 1. By arranging the top extension plate and the bottom extension plate at both ends of the staircase inclined beam, it is convenient to extend the two ends of the stairs. At the same time, the driving mechanism composed of the end ear plate, the limit guide column, the driving screw, the limit plate, the threaded connection seat and the embedded nut seat is convenient to drive and adjust the adjustment pads at the bottom of the top extension plate and the bottom extension plate. When the top extension plate and the bottom extension plate are installed and connected, their bottoms can be more tightly and stably connected to the building body through the adjustment pads, which is convenient for adaptive adjustment according to needs, thereby improving the stability of the stairs after assembly.

[0015] 2. By evenly setting the rubber pressure blocks at the bottom of the adjusting pad, when the adjusting pad contacts the building, the rubber pressure blocks are used to replace the adjusting pad for contact connection. The deformation of the rubber pressure blocks allows the bottom of the adjusting pad to maintain a tight connection with the building. In combination with the limiting tooth pins, the rubber pressure blocks do not slide during contact connection, thus avoiding positional displacement. This avoids the phenomenon of gaps at the bottom of the adjusting pad due to the uneven surface of the building, further ensuring the stability of the adjusting pad during assembly and connection.

[0016] 3. By means of the guide groove and the connecting guide block, in cooperation with the limiting guide column, the adjusting pad can maintain an accurate position during the sliding adjustment process to avoid displacement during the sliding process. At the same time, by arranging the embedded nut seat in the engaging groove, it is not only convenient for the rotation of the embedded nut seat, but also the top of the embedded nut seat will not protrude from the top plane of the top extension plate and the bottom extension plate, thereby ensuring the flatness of the top of the top extension plate and the bottom extension plate, facilitating the rotation adjustment of the drive screw and facilitating the subsequent use of the stairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0018] In the attached picture:

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the utility model adjusting pad;

[0021] Figure 3 This is a schematic diagram of the structure of the rubber pressing block of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the guide chute of the utility model;

[0023] Numbers in the figure: 1. Staircase inclined beam; 2. Step; 3. Anti-slip strip; 4. Handrail seat; 5. Top extension plate; 6. Bottom extension plate; 7. Fixing hole; 8. End ear plate; 9. Limit guide column; 10. Drive screw; 11. Limit plate; 12. Adjustment pad; 13. Threaded connection seat; 14. Guide slide groove; 15. Connection guide block; 16. Fitting groove; 17. Embedded nut seat; 18. Bottom mounting groove; 19. Rubber pressure block; 20. Limiting tooth nail. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] Example: Figure 1-4 As shown, the utility model provides a technical solution, a prefabricated staircase of an assembled building, comprising a staircase inclined beam 1, the inclined surface of the staircase inclined beam 1 is equidistantly cast with steps 2, the top edge of the step 2 is evenly provided with anti-slip strips 3, the two side ends of the step 2 are fixedly connected with handrail seats 4, the top edge of the staircase inclined beam 1 is integrally cast with a top extension plate 5, the bottom edge of the staircase inclined beam 1 is integrally cast with a bottom extension plate 6, the staircase inclined beam 1, the step 2, the handrail seat 4, the top extension plate 5 and the bottom extension plate 6 are all integrally cast, the staircase inclined beam 1, the top extension plate 5 and the bottom extension plate 6 are all provided with steel bars to ensure the overall structural strength of the prefabricated staircase, the edges of the top extension plate 5 and the bottom extension plate 6 are evenly opened with fixing holes 7, and the middle ends of the two side edges of the top extension plate 5 and the bottom extension plate 6 are fixedly connected with end ear plates 8;

[0026] The bottom of one end ear plate 8 of the top extension plate 5 and the bottom extension plate 6 is fixedly connected to the limiting guide column 9, and the other end ear plate 8 of the top extension plate 5 and the bottom extension plate 6 is connected with a driving screw 10 inside. The bottom ends of the limiting guide column 9 and the driving screw 10 are fixedly connected to the limiting disk 11. The bottoms of the top extension plate 5 and the bottom extension plate 6 are both adjustably connected with an adjusting pad 12. A threaded connection seat 13 is fixedly connected to one side edge of the adjusting pad 12 corresponding to the driving screw 10. The threaded connection seat 13 is threadedly connected to the threaded connection seat 13 inside the adjusting pad 12. The limiting guide column 9 is slidably connected to the adjusting pad 12, so that the adjusting pad 12 can be conveniently driven and adjusted.

[0027] Guide grooves 14 are symmetrically provided at the two side ends of the stair inclined beam 1 corresponding to the edge positions of the adjusting pad 12. The edge ends of the adjusting pad 12 are fixedly connected with connecting guide blocks 15. The adjusting pad 12 is connected to the guide grooves 14 through the connecting guide blocks 15 at its edge ends, so that the adjusting pad 12 can maintain an accurate position during the sliding adjustment process to avoid deviation during the sliding process. An engaging groove 16 is provided on the top side of the top extension plate 5 and the bottom extension plate 6 corresponding to the driving screw 10, and the embedded nut seat 17 fixedly connected to the top of the driving screw 10 is embedded and rotatably connected in the engaging groove 16.

[0028] A bottom mounting groove 18 is provided at the bottom of the adjusting pad 12, and rubber pressing blocks 19 are evenly connected to the inner bottom surface of the bottom mounting groove 18. The sum of the thickness of the adjusting pad 12 and the rubber pressing block 19 is greater than the length of the limiting guide column 9 and the driving screw 10. The rubber pressing block 19 is a wear-resistant rubber block, which is convenient for contacting and connecting with the adjusting pad 12 instead of the rubber pressing block 19 when the adjusting pad 12 contacts with the building body, so that the bottom of the adjusting pad 12 can maintain a tight connection with the building body, and the two side edges of the bottom of the adjusting pad 12 are evenly connected with limiting tooth nails 20.

[0029] Working principle and use process of the utility model: In the actual application process of the prefabricated staircase of the assembled building, the prefabricated staircase is first hoisted to the location of the building body to be installed by hoisting equipment, and the top extension plate 5 and the bottom extension plate 6 at the top and bottom of the staircase inclined beam 1 are respectively aligned with the building body floor and the floor, and the top extension plate 5 and the bottom extension plate 6 are arranged at both ends of the staircase inclined beam 1, so as to facilitate the extension of the two ends of the staircase inclined beam 1, thereby facilitating the overlap and placement of the prefabricated staircase as a whole;

[0030] During the installation process, the embedded nut seat 17 in the fitting groove 16 is rotated to drive the driving screw 10 to rotate, and the adjusting pad 12 at the bottom of the top extension plate 5 and the bottom extension plate 6 is conveniently driven to slide with the threaded connection seat 13, so as to realize the convenient driving adjustment of the adjusting pad 12. In this process, the adjusting pad 12 is kept in an accurate position during the sliding adjustment process through the guide groove 14 and the connecting guide block 15, and the limiting guide column 9, so as to avoid displacement during the sliding process;

[0031] By adjusting the position of the adjusting pad 12, when the top extension plate 5 and the bottom extension plate 6 are installed and connected, their bottoms can be more tightly and stably connected to the building body through the adjusting pad 12, which is convenient for adaptive adjustment according to needs, and improves the stability of the stairs after assembly. When the adjusting pad 12 contacts the floor slab and floor of the building body, the rubber pressing blocks 19 evenly arranged at the bottom of the adjusting pad 12 facilitate contact and connection between the adjusting pad 12 and the building body by replacing the adjusting pad 12 with the rubber pressing blocks 19, so that the bottom of the adjusting pad 12 can maintain a tight connection with the building body through the deformation of the rubber pressing blocks 19;

[0032] When the rubber pressing block 19 is in contact and connection, the limiting teeth 20 arranged on both sides of the bottom of the adjusting pad 12 are used to prevent the rubber pressing block 19 from sliding during contact and connection, thereby avoiding positional displacement. In this way, the deformation contact and connection of the rubber pressing block 19 can avoid the phenomenon of gaps at the bottom of the adjusting pad 12 due to the uneven surface of the building, thereby further ensuring the stability of the adjusting pad 12 during assembly and connection.

[0033] Finally, after the adjustment pad 12 is stably and tightly connected to the building body, the top extension plate 5 and the bottom extension plate 6 are further fixed and installed to the building body through expansion screws through the fixing holes 7, and the embedded nut seat 17 is arranged in the fitting groove 16 to facilitate the rotation of the embedded nut seat 17, so that the top of the embedded nut seat 17 does not protrude from the top plane of the top extension plate 5 and the bottom extension plate 6. The handrail seat 4 facilitates the installation of the stair handrail, and the anti-slip strip 3 makes the subsequent stepping on the step 2 more stable and less likely to slip.

[0034] Finally, it should be noted that the above description is only a preferred example of the present utility model and is not intended to limit the present utility model. Although the present utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A prefabricated staircase for an assembled building, comprising a staircase inclined beam (1), wherein the inclined surface of the staircase inclined beam (1) is equidistantly cast with steps (2), characterized in that: The top edge of the step (2) is evenly provided with anti-slip strips (3), the two side ends of the step (2) are fixedly connected with handrail seats (4), the top edge of the staircase inclined beam (1) is integrally cast with a top extension plate (5), the bottom edge of the staircase inclined beam (1) is integrally cast with a bottom extension plate (6), the edges of the top extension plate (5) and the bottom extension plate (6) are evenly spaced with fixing holes (7), and the middle ends of the two side edges of the top extension plate (5) and the bottom extension plate (6) are fixedly connected with end ear plates (8); The bottom of one end ear plate (8) of the top extension plate (5) and the bottom extension plate (6) is fixedly connected to a limiting guide column (9), the inside of the other end ear plate (8) of the top extension plate (5) and the bottom extension plate (6) is connected to a driving screw (10), the bottom ends of the limiting guide column (9) and the driving screw (10) are fixedly connected to a limiting plate (11), the bottoms of the top extension plate (5) and the bottom extension plate (6) are adjustably connected to an adjusting pad (12), and a threaded connection seat (13) is fixedly connected to one side edge of the adjusting pad (12) corresponding to the driving screw (10); The two side ends of the staircase inclined beam (1) are symmetrically provided with guide grooves (14) at positions corresponding to the edges of the adjustment pad (12); the edge ends of the adjustment pad (12) are fixedly connected with connecting guide blocks (15); the top sides of the top extension plate (5) and the bottom extension plate (6) are provided with engaging grooves (16) at positions corresponding to the driving screw (10); and the embedded nut seat (17) fixedly connected to the top of the driving screw (10) is embedded and rotatably connected in the engaging groove (16).

2. The prefabricated staircase for an assembled building according to claim 1, characterized in that: The staircase inclined beam (1), the steps (2), the handrail seat (4), the top extension plate (5) and the bottom extension plate (6) are all integrally cast, and steel bars are arranged inside the staircase inclined beam (1), the top extension plate (5) and the bottom extension plate (6).

3. The prefabricated staircase for an assembled building according to claim 1, characterized in that: The threaded connection seat (13) is connected to the threaded connection seat (13) inside the adjusting pad (12) through threads, and the limiting guide column (9) is connected to the adjusting pad (12) in a sliding manner.

4. The prefabricated staircase for an assembled building according to claim 1, characterized in that: The adjusting pad (12) is connected to the guide slide groove (14) by a fitting guide sliding connection between the connecting guide block (15) at its edge.

5. The prefabricated staircase for an assembled building according to claim 1, characterized in that: The bottom of the adjusting pad (12) is provided with a bottom mounting groove (18), the inner bottom surface of the bottom mounting groove (18) is evenly connected with rubber pressing blocks (19), and both side edges of the bottom of the adjusting pad (12) are evenly connected with limiting tooth pins (20).

6. The prefabricated staircase for an assembled building according to claim 5, characterized in that: The sum of the thicknesses of the adjusting pad (12) and the rubber pressing block (19) is greater than the length of the limiting guide column (9) and the driving screw (10), and the rubber pressing block (19) is a wear-resistant rubber block.

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