A fixing device for modular stair installation

Abstract

The utility model belongs to the field of fabricated staircases, especially a fixing device for fabricated staircase installation, including staircase, the left side fixed bottom fixed mounting of staircase has support plate, the top front and back side of support plate all fixed mounting has first support rod, the inside slide of first support rod installs first slide rod, the inside fixed mounting screw rod of first slide rod, the top fixed mounting of screw rod has handrail, the top rotation of first slide rod installs guardrail, the utility model discloses through rotating handrail drive screw rod to the height of guardrail is adjusted, makes it can according to the height of special crowd when climbing design, the convenient special personnel use increases its security, and prevents the rotation through the thread property between the fixed screw block and nut, supports in utilizing telescopic link, cooperates triangle support spare support bottom, not only carries out effective fixed support to staircase, also can save a large amount of bottom space.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated stairs, specifically a fixing device for the installation of prefabricated stairs. Background Technology

[0002] Prefabricated staircases are staircase structures made by prefabricating components in a factory, transporting them to the construction site, and assembling them using reliable connection methods. They are an important component of industrialized construction and, compared to traditional cast-in-place staircases, offer advantages such as higher construction efficiency, controllable quality, and energy conservation and environmental friendliness. They are widely used in prefabricated buildings, and are particularly common in residential buildings when connecting the first and second floors.

[0003] During use, the height of the railings of prefabricated stairs is mostly fixed. Especially when used at home, there are often situations where adults and children have different heights. Once the height is fixed and cannot be changed, it will not be suitable for special groups of people and will bring certain dangers to users. In addition, the fixing device of prefabricated stairs is not strong enough by relying solely on the pre-embedded reinforced concrete. It is necessary to add a bottom support device, but most of the support devices will occupy the bottom space of the stairs and affect the use. Utility Model Content

[0004] The purpose of this utility model is to provide a fixing device for the installation of prefabricated stairs, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for installing prefabricated stairs, comprising a staircase, a support plate fixedly installed on the bottom left side of the staircase, first support rods fixedly installed on the front and rear sides of the top of the support plate, a first sliding rod slidably installed inside the first support rod, a threaded rod fixedly installed inside the first sliding rod, a handrail fixedly installed on the top of the threaded rod, a guardrail rotatably installed on the top of the first sliding rod, the bottom of the handrail rotatably connected to the guardrail, a second support rod fixedly installed in the middle of the support plate, a second spring fixedly installed inside the second support rod, a second sliding rod fixedly installed on the top of the second spring, and the second sliding rod fixedly connected to the guardrail.

[0006] Preferably, triangular support members are provided on both sides of the bottom of the staircase. A first connecting plate and a second connecting plate are fixedly installed on the upper and lower sides of the two sets of triangular support members, respectively. A rotating shaft is rotatably installed in the middle of the second connecting plate. A telescopic rod is fixedly installed in the middle of the rotating shaft. A fixing plate is rotatably installed on the top of the telescopic rod. A first threaded block is fixedly installed on both sides of the rotating shaft. A second threaded block is fixedly installed on both sides of the second connecting plate. The first threaded block and the second threaded block are connected by a nut.

[0007] Preferably, the bottom of the threaded rod is threadedly connected to the first support rod, and the outer wall of the threaded rod is provided with a first spring, the two ends of the first spring being fixedly connected to the first support rod and the first sliding rod, respectively.

[0008] Preferably, the upper and lower parts of the staircase are respectively fixedly installed with a first embedded part and a second embedded part, and multiple sets of embedded bolts are provided inside the first embedded part and the second embedded part.

[0009] Preferably, a wall is provided on the right side of the staircase.

[0010] Preferably, the fixing plate (23) is connected to the second embedded part (3) by fixing bolts (24).

[0011] Compared with the prior art, the beneficial effects of this utility model are: by rotating the handrail to drive the threaded rod to adjust the height of the guardrail, it can be designed according to the height of special people climbing stairs, making it convenient for special people to use and increasing their safety. Furthermore, the thread characteristics between the threaded block and the nut are used to fix and prevent rotation. With the use of the telescopic rod for support and the triangular support for the bottom, it not only effectively fixes and supports the stairs, but also saves a lot of bottom space. Attached Figure Description

[0012] Figure 1 This is a side view of a fixing device for installing prefabricated stairs, as proposed in this utility model.

[0013] Figure 2 This is a partial structural schematic diagram of a fixing device for installing prefabricated stairs according to the present invention.

[0014] Figure 3 This is a schematic diagram of the disassembled structure of the threaded block assembly proposed in this utility model;

[0015] Figure 4 This is a schematic diagram of the guardrail component structure proposed in this utility model.

[0016] In the diagram: 1. Staircase; 2. First embedded part; 3. Second embedded part; 4. Embedded bolt; 5. Support plate; 6. First support rod; 7. Threaded rod; 8. First spring; 9. First sliding rod; 10. Handrail; 11. Guardrail; 12. Second support rod; 13. Second spring; 14. Second sliding rod; 15. Triangular support; 16. First connecting plate; 17. Second connecting plate; 18. Rotating shaft; 19. First threaded block; 20. Second threaded block; 21. Nut; 22. Telescopic rod; 23. Fixing plate; 24. Fixing bolt. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0020] Example 1, referring to Figures 1 to 4 This is the first embodiment of the present invention, which provides a fixing device for installing prefabricated stairs, including stairs 1. A support plate 5 is fixedly installed on the bottom left side of stairs 1. First support rods 6 are fixedly installed on the front and rear sides of the top of the support plate 5. A first sliding rod 9 is slidably installed inside the first support rod 6. A threaded rod 7 is fixedly installed inside the first sliding rod 9. A handrail 10 is fixedly installed on the top of the threaded rod 7. Rotating the handrail 10 causes the threaded rod 7 to rotate. The threaded rod 7 is threadedly connected to the bottom first support rod 6. The method allows the threaded rod 7 to drive the guardrail 11 on the first support rod 6 to move up and down. The guardrail 11 is rotatably mounted on the top of the first sliding rod 9. The bottom of the handrail 10 is rotatably connected to the guardrail 11. The second support rod 12 is fixedly mounted in the middle of the support plate 5. The second spring 13 is fixedly mounted inside the second support rod 12. The second sliding rod 14 is fixedly mounted on the top of the second spring 13. The second sliding rod 14 is fixedly connected to the guardrail 11. At the same time, the second sliding rod 14 moves with the guardrail 11 and compresses the second spring 13, which provides support and prevents swaying.

[0021] Triangular support members 15 are provided on both sides of the bottom of the staircase 1. A first connecting plate 16 and a second connecting plate 17 are fixedly installed on the upper and lower sides of the two sets of triangular support members 15, respectively. A rotating shaft 18 is rotatably installed in the middle of the second connecting plate 17. Rotating the rotating shaft 18 makes it consistent with the inclination angle of the staircase 1. A telescopic rod 22 is fixedly installed in the middle of the rotating shaft 18. Extending the telescopic rod 22, a fixing plate 23 is rotatably installed on the top of the telescopic rod 22, making the fixing plate 23 consistent with the position of the second embedded part 3. First connecting plates 16 and 17 are fixedly installed on both sides of the rotating shaft 18. The threaded block 19 and the second threaded block 20 are fixedly installed on both sides of the second connecting plate 17. The first threaded block 19 and the second threaded block 20 are connected by a nut 21. Finally, the nut 21 on the inner side of the first threaded block 19 is rotated to the middle of the first threaded block 19 and the second threaded block 20. The rotating shaft 18 is fixed to prevent rotation by the thread between the nut 21, the first threaded block 19 and the second threaded block 20. The thread at the joint of the first threaded block 19 and the second threaded block 20 is a continuous thread, which can facilitate the connection of the nut 21.

[0022] The bottom of the threaded rod 7 is threadedly connected to the first support rod 6. The outer wall of the threaded rod 7 is provided with a first spring 8. The two ends of the first spring 8 are fixedly connected to the first support rod 6 and the first sliding rod 9, respectively. The first spring 8 can prevent the first support rod 6 from shaking when supporting. The upper and lower parts of the staircase 1 are respectively fixedly installed with a first embedded part 2 and a second embedded part 3. Multiple sets of embedded bolts 4 are provided inside the first embedded part 2 and the second embedded part 3. The first embedded part 2 and the second embedded part 3 are fixed by the embedded bolts 4. A wall is provided on the right side of the staircase 1. The fixing plate 23 is connected to the second embedded part 3 by fixing bolts 24.

[0023] In use, rotating the handrail 10 causes the threaded rod 7 to rotate. The threaded rod 7 is connected to the bottom first support rod 6 by threads, causing the guardrail 11 on the first support rod 6 to move up and down. At the same time, the second sliding rod 14 moves with the guardrail 11 and compresses the second spring 13. The rotating shaft 18 is rotated to match the inclination angle of the stair 1, and the telescopic rod 22 is stretched so that the fixed plate 23 is aligned with the position of the second embedded part 3. Finally, the nut 21 on the inner side of the first threaded block 19 is rotated to the middle of the first threaded block 19 and the second threaded block 20. The rotating shaft 18 is fixed by the threads between the nut 21, the first threaded block 19 and the second threaded block 20 to prevent rotation.

[0024] In summary, by rotating the handrail 10 to drive the threaded rod 7, the height of the guardrail 11 can be adjusted, making it suitable for people with special needs to climb stairs, thus facilitating their use and increasing their safety. Furthermore, the thread characteristics between the threaded block and the nut 21 are used to fix and prevent rotation. With the telescopic rod 22 for support and the triangular support 15 supporting the bottom, the staircase 1 is not only effectively fixed and supported, but also a lot of bottom space is saved.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing device for installing prefabricated stairs, comprising stairs (1), characterized in that: A support plate (5) is fixedly installed on the bottom left side of the staircase (1). A first support rod (6) is fixedly installed on the front and back sides of the top of the support plate (5). A first sliding rod (9) is slidably installed inside the first support rod (6). A threaded rod (7) is fixedly installed inside the first sliding rod (9). A handrail (10) is fixedly installed on the top of the threaded rod (7). A guardrail (11) is rotatably installed on the top of the first sliding rod (9). The bottom of the handrail (10) is rotatably connected to the guardrail (11). A second support rod (12) is fixedly installed in the middle of the support plate (5). A second spring (13) is fixedly installed inside the second support rod (12). A second sliding rod (14) is fixedly installed on the top of the second spring (13). The second sliding rod (14) is fixedly connected to the guardrail (11).

2. The fixing device for installing prefabricated stairs according to claim 1, characterized in that: The bottom sides of the staircase (1) are provided with triangular support members (15). The upper and lower sides of the two sets of triangular support members (15) are respectively fixedly installed with a first connecting plate (16) and a second connecting plate (17). A rotating shaft (18) is rotatably installed in the middle of the second connecting plate (17). A telescopic rod (22) is fixedly installed in the middle of the rotating shaft (18). A fixing plate (23) is rotatably installed on the top of the telescopic rod (22). A first threaded block (19) is fixedly installed on both sides of the rotating shaft (18). A second threaded block (20) is fixedly installed on both sides of the second connecting plate (17). The first threaded block (19) and the second threaded block (20) are connected by a nut (21).

3. A fixing device for installing prefabricated stairs according to claim 2, characterized in that: The bottom of the threaded rod (7) is threadedly connected to the first support rod (6). The outer wall of the threaded rod (7) is provided with a first spring (8). The two ends of the first spring (8) are fixedly connected to the first support rod (6) and the first sliding rod (9) respectively.

4. A fixing device for installing prefabricated stairs according to claim 3, characterized in that: The upper and lower parts of the staircase (1) are respectively fixedly installed with a first embedded part (2) and a second embedded part (3), and multiple sets of embedded bolts (4) are provided inside the first embedded part (2) and the second embedded part (3).

5. A fixing device for installing prefabricated stairs according to claim 4, characterized in that: A wall is provided on the right side of the staircase (1).

6. A fixing device for installing prefabricated stairs according to claim 3, characterized in that: The fixing plate (23) is connected to the second embedded part (3) by fixing bolts (24).

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