Assembly type three-run rotary stair

Abstract

The application relates to the field of rotary stairs, and discloses an assembled three-track rotary stair which comprises a fixed column and a sliding block, the surface of the fixed column is fixedly provided with a plurality of steps, the top of each step is fixedly connected with a handrail, the surface of the sliding block is slidably provided with a sliding rail, the surface of the sliding rail is fixedly connected with a fixed seat, the inner wall of the sliding block is slidably provided with two limiting blocks, one end of each limiting block is movably connected with the surface of the sliding block, the inner wall of each limiting block is connected with a plurality of fixing bolts in a clamped mode, and the top of the sliding block is fixedly connected with the bottom end of the fixed column. The sliding block is arranged at the bottom end of the fixed column, the surface of the sliding block is connected with the fixed seat through the sliding rail, the inner wall of the sliding rail is slidably connected with the limiting blocks, the inner wall of the limiting blocks is connected with the fixing bolts in a clamped mode, the position of the limiting blocks is fixed through the fixing bolts, the position of the sliding block is limited, and the fixed column at the top of the sliding block can be disassembled after the fixing bolts are disassembled.

Description

Technical Field

[0001] This application relates to the field of spiral staircases, and more particularly to a prefabricated three-flight spiral staircase. Background Technology

[0002] A spiral staircase, also known as a spiral staircase, is a staircase structure that ascends in a spiral with a single central column. Its steps are fan-shaped, usually in a circular layout. Based on the support method, it can be divided into central column type and columnless type: the central column type bears the weight, while the outer steps are less stable; the columnless type is supported by double helical beams or railings, with a more complex structure but higher stability requirements. The main material types include solid wood, steel-wood, and steel-glass combinations, corresponding to different keel and step structures. Due to the narrow inner side of the steps and steep slope, safety is limited, and it is usually not used as a main building passage or emergency evacuation route. It is commonly found in secondary passage areas of low-rise residential buildings and office buildings, or as decorative architectural features in courtyards and interior spaces. The function of a staircase is to connect upper and lower levels. A three-flight staircase has two resting platforms at the connection between the upper and lower floors. In a conventional spiral staircase, the fixed column is welded to the upper part of the floor during installation. Several steps are installed on the surface of the fixed column, allowing users to easily access the upper floor. Handrails are installed at the top of the steps for support and protection around the steps.

[0003] Regarding the aforementioned technologies, the inventors believe that conventional spiral staircases mostly use a bottom welding installation method, which requires a long time to construct. Furthermore, when used in some near-term buildings, the time and effort required for installation and dismantling are also considerable, thus causing inconvenience during use.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the inconvenience of installation and disassembly of conventional spiral staircases, this application provides a prefabricated three-flight spiral staircase.

[0006] The technical solution for a prefabricated three-flight spiral staircase provided in this application is as follows:

[0007] A prefabricated three-flight spiral staircase includes a fixed column and a slider. Several treads are fixedly mounted on the surface of the fixed column, and handrails are fixedly connected to the top of each tread. A slide rail is slidably mounted on the surface of the slider, and a fixed seat is fixedly connected to the surface of the slide rail. Two limiting blocks are slidably mounted on the inner wall of the slider. One end of each limiting block is movably connected to the surface of the slider, and several fixing bolts are engaged with the inner wall of the limiting block. The top of the slider is fixedly mounted to the bottom of the fixed column, and the center of the slider is on the same straight line as the center of the fixed column. The fixing bolts are divided into two groups, symmetrically distributed about the slider axis, and the surfaces of the fixing bolts are threaded to the inner wall of the slide rail.

[0008] Preferably, the fixed column has two limiting holes inside, and two insert rods are slidably installed on the inner wall of the limiting holes. One end of the insert rod is fixedly connected to one end of the limiting block, and the size of the insert rod surface is adapted to the size of the inner wall of the limiting hole.

[0009] Preferably, an mounting block is movably installed on the inner wall of the slide rail, one end of the mounting block is movably connected to the surface of the fixed block, and the dimensions of the mounting block surface are adapted to the dimensions of the inner wall of the slide rail.

[0010] Preferably, two sealing rings are fixedly installed on the surface of the mounting block. The sealing rings are rubber rings, and the surface of the sealing rings is movably connected to the inner wall of the slide rail. The dimensions of the sealing ring surface are interference-fitted with the dimensions of the inner wall of the slide rail.

[0011] Preferably, a pull rope is snapped onto the top of the fixed column, the center of the pull rope is on the same straight line as the center of the fixed column, and a tension detector is fixedly connected to the top of the pull rope, with an alarm fixedly installed on the surface of the tension detector.

[0012] Preferably, the inner wall of the tension detector is fitted with a plurality of connecting bolts, which are arranged in a circular array with the center of the tension detector as the axis.

[0013] Preferably, the bottom end of the pull rope is fixedly connected to a hook, and the bottom end of the hook is engaged with the top of the fixed post.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. By installing a slider at the bottom of a fixed column, the surface of the slider is connected to a fixed seat via a slide rail. A limit block is slidably connected to the inner wall of the slide rail, and a fixing bolt is engaged with the inner wall of the limit block. This allows the slider's position to be restricted after the fixing bolt is secured to the limit block. The fixed column at the top of the slider can be disassembled after the fixing bolt is removed. Two limit holes are opened on the inner wall of the fixed column, and a rod is slidably installed on the inner wall of the limit holes to improve the connection between the limit block and the fixed column. An installation block is movably connected to the inner wall of the slide rail to restrict the position of the limit block. Two rubber sealing rings are fixedly connected to the surface of the installation block to improve the sealing and connection between the installation block and the slide rail. Compared with existing technologies, this method effectively improves the convenience of installing and disassembling the spiral staircase.

[0016] 2. A pull rope can also be installed on the top of the fixed column. A tension detector is fixedly connected to the top of the pull rope, and an alarm is fixedly installed on the surface of the tension detector. This allows the tension detector to detect when the fixed column tilts or collapses at the bottom, and to sound an alarm. Several connecting bolts are snapped into the inner wall of the tension detector to facilitate its installation and removal. A hook is fixedly connected to the bottom of the pull rope to facilitate its connection to the fixed column. This effectively improves the performance of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a prefabricated three-flight spiral staircase according to an embodiment of the application;

[0018] Figure 2 This is a schematic diagram of the slider structure in an embodiment of the application;

[0019] Figure 3 This is a side view of the embodiment of the application.

[0020] Figure 4 This is a schematic diagram of the structure at point A in the embodiment of the application.

[0021] Explanation of reference numerals in the attached diagram: 1. Fixed column; 2. Pedal; 3. Handrail; 4. Slider; 5. Slide rail; 6. Fixed base; 7. Limiting block; 8. Fixing bolt; 9. Limiting hole; 10. Insert rod; 11. Mounting block; 12. Sealing ring; 13. Pull rope; 14. Tension detector; 15. Alarm; 16. Connecting bolt; 17. Hook. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a prefabricated three-flight spiral staircase, referring to... Figure 1 - Figure 2 The system includes a fixed column 1, which is welded to the upper part of the floor during installation. Several steps 2 are installed on the surface of the fixed column 1, allowing users to easily access the upper level. Handrails 3 are installed on the top of the steps 2, providing support and protection for the area around the steps. A slider 4 is installed at the bottom of the fixed column 1. A slide rail 5 is slidably connected to the surface of the slider 4, and a fixed seat 6 is fixedly connected to the surface of the slide rail 5. The slide rail 5 is installed to the ground with the help of the fixed seat 6. A limit block 7 is slidably connected to the inner wall of the slide rail 5, and a fixing bolt 8 is engaged with the inner wall of the limit block 7. The fixed column 1 is installed in the slide rail 5 with the help of the slider 4, and the position of the limit block 7 is fixed by the fixing bolt 8, which restricts the position of the slider 4. The fixed column 1 on the top of the slider 4 can be disassembled after the fixing bolt 8 is removed, which effectively improves the convenience of installation and disassembly of the spiral staircase.

[0024] Reference Figure 2 The inner wall of the fixed column 1 has two limiting holes 9. A rod 10 is slidably installed on the inner wall of the limiting hole 9. One end of the rod 10 is fixedly connected to one end of the limiting block 7. The connection between the limiting block 7 and the fixed column 1 is improved by the rod 10 and the limiting hole 9, thereby improving the stability of the fixed column 1. The inner wall of the slide rail 5 is movably connected to the mounting block 11. One end of the mounting block 11 is movably installed on one end of the limiting block 7. The position of the limiting block 7 is restricted by the mounting block 11, thereby keeping the limiting block 7 connected to the surface of the slider 4. Two rubber sealing rings 12 are fixedly connected to the surface of the mounting block 11. The surface of the sealing rings 12 is movably installed on the inner wall of the slide rail 5. The sealing rings 12 improve the sealing and connection between the mounting block 11 and the slide rail 5, preventing external impurities from entering the inner wall of the slide rail 5.

[0025] Reference Figure 3 - Figure 4 A pull rope 13 is installed on the top of the fixed column 1. A tension detector 14 is fixedly connected to the top of the pull rope 13. An alarm 15 is fixedly installed on the surface of the tension detector 14. The tension detector 14 detects the tension generated by the pull rope 13, thereby detecting if the fixed column 1 tilts or collapses at the bottom, and triggering an alarm through the alarm 15, so that people in the surrounding area can evacuate quickly. This effectively improves the safety of the spiral staircase in the near-term building. Several connecting bolts 16 are snapped into the inner wall of the tension detector 14, and the surface of the connecting bolts 16 is installed with the inner wall of the building, so as to facilitate the installation and removal of the tension detector 14. A hook 17 is fixedly connected to the bottom of the pull rope 13. The bottom end of the hook 17 is snapped into the top of the fixed column 1, and the hook 17 makes it easy to connect the pull rope 13 to the fixed column 1, making the installation more convenient.

[0026] The implementation principle of a prefabricated three-flight spiral staircase according to an embodiment of this application is as follows: A slider 4 is installed at the bottom of a fixed column 1. A slide rail 5 is slidably connected to the surface of the slider 4, and a fixed seat 6 is fixedly connected to the surface of the slide rail 5. The slide rail 5 is installed to the ground using the fixed seat 6. A limit block 7 is slidably connected to the inner wall of the slide rail 5, and a fixing bolt 8 is engaged with the inner wall of the limit block 7. This allows the fixed column 1 to be installed inside the slide rail 5 using the slider 4. After the fixing bolt 8 fixes the position of the limit block 7, the position of the slider 4 is restricted. After removing the fixing bolt 8, the fixed column 1 at the top of the slider 4 can be disassembled. Two limit holes 9 are opened on the inner wall of the fixed column 1, and a plug rod 10 is slidably installed on the inner wall of the limit holes 9. One end of the insertion rod 10 is fixedly connected to one end of the limiting block 7, so as to improve the connection effect between the limiting block 7 and the fixed column 1 by means of the insertion rod 10 and the limiting hole 9, thereby improving the stability of the fixed column 1. The inner wall of the slide rail 5 is movably connected to the mounting block 11, one end of the mounting block 11 is movably installed with one end of the limiting block 7, so as to limit the position of the limiting block 7 by means of the mounting block 11, thereby keeping the limiting block 7 connected to the surface of the slider 4. Two rubber sealing rings 12 are fixedly connected to the surface of the mounting block 11. The surface of the sealing rings 12 is movably installed with the inner wall of the slide rail 5, so as to improve the sealing and connection effect between the mounting block 11 and the slide rail 5 by means of the sealing rings 12, preventing external impurities from entering the inner wall of the slide rail 5.

[0027] A pull rope 13 can also be installed on the top of the fixed column 1. A tension detector 14 is fixedly connected to the top of the pull rope 13, and an alarm 15 is fixedly installed on the surface of the tension detector 14. This allows the tension generated by the pull rope 13 to be detected by the tension detector 14, thereby detecting if the fixed column 1 tilts or collapses at the bottom. The alarm 15 will then sound an alarm, allowing people in the surrounding area to evacuate quickly, effectively improving the safety of the spiral staircase in a building nearing completion. Several connecting bolts 16 are snapped into the inner wall of the tension detector 14 to facilitate the installation and removal of the tension detector 14 by attaching the surface of the connecting bolts 16 to the inner wall of the building. The bottom of the pull rope 13 is fixedly connected to a hook 17, and the bottom end of the hook 17 is snapped into the top of the fixed column 1, making it easier to connect the pull rope 13 to the fixed column 1 during installation.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated three-flight spiral staircase, comprising a fixed column (1) and a slider (4), characterized in that: Several pedals (2) are fixedly installed on the surface of the fixed column (1). A handrail (3) is fixedly connected to the top of the pedal (2). A slide rail (5) is slidably installed on the surface of the slider (4). A fixed seat (6) is fixedly connected to the surface of the slide rail (5). Two limiting blocks (7) are slidably installed on the inner wall of the slider (4). One end of the limiting block (7) is movably connected to the surface of the slider (4). Several fixing bolts (8) are engaged on the inner wall of the limiting block (7).

2. The prefabricated three-flight spiral staircase according to claim 1, characterized in that: The top of the slider (4) is fixedly installed at the bottom of the fixed column (1), and the center of the slider (4) and the center of the fixed column (1) are on the same straight line. Several fixing bolts (8) are divided into two groups, and the two groups of fixing bolts (8) are symmetrically distributed about the slider (4) as the axis, and the surface of the fixing bolts (8) is threadedly connected to the inner wall of the slide rail (5).

3. A prefabricated three-flight spiral staircase according to claim 1, characterized in that: The fixed column (1) has two limiting holes (9) inside. Two insert rods (10) are slidably installed on the inner wall of the limiting hole (9). One end of the insert rod (10) is fixedly connected to one end of the limiting block (7), and the size of the insert rod (10) is compatible with the size of the inner wall of the limiting hole (9).

4. A prefabricated three-flight spiral staircase according to claim 1, characterized in that: An mounting block (11) is movably installed on the inner wall of the slide rail (5). One end of the mounting block (11) is movably connected to the surface of the fixed block, and the size of the surface of the mounting block (11) is compatible with the size of the inner wall of the slide rail (5).

5. A prefabricated three-flight spiral staircase according to claim 4, characterized in that: Two sealing rings (12) are fixedly installed on the surface of the mounting block (11). The sealing rings (12) are rubber rings, and the surface of the sealing rings (12) is movably connected to the inner wall of the slide rail (5). The size of the surface of the sealing rings (12) is interference-fitted with the size of the inner wall of the slide rail (5).

6. A prefabricated three-flight spiral staircase according to claim 1, characterized in that: A pull rope (13) is attached to the top of the fixed column (1). The center of the pull rope (13) is on the same straight line as the center of the fixed column (1). A tension detector (14) is fixedly connected to the top of the pull rope (13). An alarm (15) is fixedly installed on the surface of the tension detector (14).

7. A prefabricated three-flight spiral staircase according to claim 6, characterized in that: The inner wall of the tension detector (14) is fitted with a number of connecting bolts (16), and the number of connecting bolts (16) are arranged in a circular array with the center of the tension detector (14) as the axis.

8. A prefabricated three-flight spiral staircase according to claim 6, characterized in that: The bottom end of the pull rope (13) is fixedly connected to a hook (17), and the bottom end of the hook (17) is engaged with the top of the fixed post (1).

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