Automatic contraction and leveling device for fireproof curtain bottom opening

Abstract

The application relates to an automatic contraction leveling device, belongs to the technical field of decoration, and particularly relates to a fireproof curtain bottom automatic contraction leveling device, which comprises a floor and a fireproof curtain box group, the fireproof curtain box group is arranged at the bottom of the floor, further comprises fireproof curtain cloth, a telescopic assembly and an angle steel, the fireproof curtain cloth is arranged in the interior of the fireproof curtain box group, a fireproof curtain metal plate is fixedly installed at the bottom of the fireproof curtain cloth, the telescopic assembly comprises a sleeve fixedly installed on one side of the fireproof curtain metal plate, the angle steel is fixedly installed at the bottom of the floor on both sides, a limiting square tube is fixedly installed at the bottom of the angle steel, the automatic contraction leveling effect is achieved, the problems that the system rigidity and adaptability of the existing patent are insufficient, the stability and durability are insufficient, the synchronization of multi-point leveling actions cannot be guaranteed, and the wear protection and maintenance convenience design for long-term use are weak are solved.

Description

Technical Field

[0001] This invention relates to the field of decoration and renovation technology, and in particular to an automatic retraction and leveling device for the bottom opening of a fireproof roller shutter. Background Technology

[0002] During the decoration phase of a project, the bottom edge of the fireproof roller shutter is usually covered with a surface material to ensure that the shutter can be raised and lowered flexibly while achieving a good decorative finish. However, many quality problems often arise during the construction of the bottom edge of the fireproof roller shutter in various projects.

[0003] A search revealed Chinese patent CN204200045U, which discloses a leveling device for a fireproof roller shutter. The device includes an adjustable elastic mechanism, one end of which is connected to the curtain fabric, and the other end to a base plate, used to adjust the horizontal flatness of the base plate. This patent also discloses a fireproof roller shutter that achieves automatic adjustment of the base plate and curtain fabric. The design is simple and reasonable, occupies little space, is easy for users to use, and ensures the horizontal flatness of the base plate.

[0004] Based on the above search and existing technology, the findings were as follows:

[0005] The existing patented system lacks overall rigidity and adaptability, stability and durability, cannot guarantee the synchronization of multi-point leveling actions, and has weak protection against wear and tear and ease of maintenance, thus having certain limitations. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention proposes an automatic retraction and leveling device for the bottom opening of a fireproof roller shutter. Utilizing the interaction of forces, it achieves convenient automatic retraction and leveling during construction through a steel pipe limiter and a spring sleeve device.

[0007] The technical solution to achieve the purpose of this invention is as follows: an automatic retraction and leveling device for the bottom opening of a fireproof roller shutter, comprising a floor slab and a fireproof roller shutter box assembly, wherein the fireproof roller shutter box assembly is disposed at the bottom of the floor slab, and further comprising fireproof fabric for the roller shutter, a telescopic component, and angle steel.

[0008] The fireproof cloth of the roller shutter is installed inside the fireproof roller shutter box assembly, and a roller shutter metal plate is fixedly installed at the bottom of the fireproof cloth of the roller shutter.

[0009] The telescopic assembly includes a sleeve that is fixedly installed on one side of the roller shutter metal plate;

[0010] The angle steel is fixedly installed on both sides of the bottom of the floor slab, and a limiting square tube is fixedly installed at the bottom of the angle steel.

[0011] Preferably, multiple expansion bolts are provided between the floor slab and the fireproof roller shutter box assembly, a polytetrafluoroethylene (PTFE) liner is fixedly installed at the bottom of the limiting square tube, and a gypsum board is fixedly installed at the bottom of the PTFE liner.

[0012] Preferably, a connecting frame is provided inside the sleeve, a spring is fixedly installed inside the sleeve, the spring is fixedly connected to the top of the connecting frame, and a decorative base plate is fixedly installed at the bottom of the connecting frame.

[0013] Compared with existing technologies, the significant advantages of this invention are:

[0014] Firstly, this invention utilizes the synergistic action of springs and sleeves in the telescopic assembly. When the fireproof roller shutter rises to the limit position, the metal plate of the shutter overlaps with the ceiling structure, triggering the spring to contract and generate an upward pulling force. This automatically levels the decorative base plate, ensuring that the gap between the bottom and the top surface is closed evenly, thus avoiding unevenness at the bottom of the shutter due to gravity or installation errors. Furthermore, angle steel and limit square tubes are used as the support frame and fixed to the floor slab with expansion bolts, enhancing the overall structural stability.

[0015] Secondly, this invention uses telescopic components arranged at multiple points at different positions at the bottom of the roller shutter, and achieves uniform force distribution in each part through the elastic deformation of the spring, avoiding deformation or damage caused by local stress concentration; the rigid connection between the connecting frame 601 and the decorative base plate further ensures the synchronicity of the leveling action; in addition, the modular design facilitates on-site installation and subsequent maintenance, simplifies construction steps, and reduces labor costs.

[0016] It solves the problems of insufficient overall system rigidity and adaptability, lack of stability and durability, inability to guarantee the synchronization of multi-point leveling actions, and weak protection against wear and tear and convenient maintenance design in existing patents. Attached Figure Description

[0017] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the first-view structure provided in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the second-view structure provided in one embodiment of the present invention;

[0020] Figure 3 This is a front structural diagram provided in two embodiments of the present invention;

[0021] Figure 4 This is a partial cross-sectional structural schematic diagram provided in two embodiments of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Floor slab; 2. Fireproof roller shutter box assembly; 201. Fireproof cloth for roller shutter; 202. Expansion bolt; 3. Metal plate for roller shutter; 4. Angle steel; 5. Limiting square tube; 501. Polytetrafluoroethylene lining plate; 6. Telescopic assembly; 601. Connecting frame; 602. Sleeve; 603. Spring; 7. Decorative base plate; 8. Gypsum board. Detailed Implementation

[0024] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This invention provides an improved automatic retraction and leveling device for the bottom opening of a fireproof roller shutter. The technical solution of this invention is as follows:

[0026] Example 1

[0027] like Figures 1-2 As shown, an automatic retraction and leveling device for the bottom opening of a fireproof roller shutter includes a floor slab 1 and a fireproof roller shutter box assembly 2. The fireproof roller shutter box assembly 2 is located at the bottom of the floor slab 1. Through the design of the mechanical structure, it realizes automatic leveling, stable closure, and uniform force distribution of the bottom opening of the fireproof roller shutter. It combines functionality, safety, and ease of use, and is suitable for building scenarios with high requirements for fire prevention and aesthetics. It also includes a fireproof roller shutter fabric 201, a telescopic component 6, and an angle steel 4.

[0028] The fireproof cloth 201 is installed inside the fireproof roller shutter box 2. The bottom of the fireproof cloth 201 is fixedly installed with a roller shutter metal plate 3. The combination of the fireproof cloth 201 and the metal plate enhances the fireproof performance and improves safety.

[0029] The telescopic assembly 6 includes a sleeve 602 fixedly installed on one side of the roller shutter metal plate 3. Multiple telescopic assemblies 6 prevent deformation or damage caused by local stress concentration.

[0030] Angle steel 4 is fixedly installed on both sides of the bottom of floor slab 1, and a limiting square tube 5 is fixedly installed at the bottom of angle steel 4, which enhances the overall rigidity of the device.

[0031] Example 2:

[0032] Based on the first embodiment of this application which provides an automatic retraction and leveling device for the bottom opening of a fireproof roller shutter, the second embodiment of this application proposes another automatic retraction and leveling device for the bottom opening of a fireproof roller shutter. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0033] The second embodiment of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] like Figures 3-4 As shown, multiple expansion bolts 202 are installed between the floor slab 1 and the fireproof roller shutter box assembly 2. A polytetrafluoroethylene (PTFE) liner 501 is fixedly installed at the bottom of the limiting square tube 5, and a gypsum board 8 is fixedly installed at the bottom of the PTFE liner 501. The addition of a PTFE liner 501 and a gypsum board 8 at the bottom of the limiting square tube 5 reduces friction loss and improves fireproof and sound insulation performance.

[0035] Furthermore, a connecting frame 601 is provided inside the sleeve 602, and a spring 603 is fixedly installed inside the sleeve 602. The spring 603 is fixedly connected to the top of the connecting frame 601, and a decorative base plate 7 is fixedly installed at the bottom of the connecting frame 601. The flat closure of the decorative base plate 7 can effectively block the spread of smoke and fire.

[0036] The specific working method is as follows: When the fireproof roller shutter rises to the limit position, the steel base of the bottom opening of the shutter overlaps with the steel base of the ceiling, and the sleeve 602 contracts under force, generating an upward pulling force, which automatically levels the decorative base plate 7. By setting multiple sleeves 602 at different positions, it is ensured that the force is evenly distributed in each part, realizing the automatic leveling and closing of the bottom opening of the shutter. First, steel bases are installed at the bottom opening of the fireproof roller shutter and the ceiling position respectively to ensure that the two can accurately overlap (limit position). Second, the spring 603 and the sleeve 602 are welded to ensure that the sleeve 602 is connected to the metal plate 3 of the shutter. Securely fasten the sleeve 602; it needs to be set at different positions according to the force requirements and its initial state should be adjusted to ensure uniform force distribution; then install the steel pipe limiter and install the limit square tube 5 through the angle steel 4 to ensure that the sleeve 602 is triggered to contract when the fireproof cloth 201 of the roller shutter rises to the designated position; start the fireproof roller shutter and observe the changes of the sleeve 602 during the rising process; check whether the decorative base plate 7 at the bottom of the roller shutter automatically levels and whether the gap with the top surface is evenly closed; make fine adjustments to uneven or unevenly stressed parts to ensure that all springs 603 and sleeves 602 work together.

[0037] The technical means disclosed in this invention are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this invention are common knowledge to those skilled in the art.

Claims

1. A fireproof roller shutter bottom opening automatic retraction and leveling device, comprising a floor slab (1) and a fireproof roller shutter box assembly (2), characterized in that: The fireproof roller shutter box assembly (2) is located at the bottom of the floor slab (1) and also includes: Fireproof roller shutter cloth (201) is installed inside the fireproof roller shutter box assembly (2), and a roller shutter metal plate (3) is fixedly installed at the bottom of the fireproof roller shutter cloth (201). Telescopic assembly (6), the telescopic assembly (6) includes a sleeve (602) fixedly installed on one side of the roller shutter metal plate (3); Angle steel (4) is fixedly installed on both sides of the bottom of the floor slab (1), and a limiting square tube (5) is fixedly installed at the bottom of the angle steel (4).

2. The automatic retraction and leveling device for the bottom opening of a fireproof roller shutter according to claim 1, characterized in that: Multiple expansion bolts (202) are provided between the floor slab (1) and the fireproof roller shutter box assembly (2). A polytetrafluoroethylene liner (501) is fixedly installed at the bottom of the limiting square tube (5), and a gypsum board (8) is fixedly installed at the bottom of the polytetrafluoroethylene liner (501).

3. The automatic retraction and leveling device for the bottom opening of a fireproof roller shutter according to any one of claims 1-2, characterized in that: The sleeve (602) is provided with a connecting frame (601) inside, and a spring (603) is fixedly installed inside the sleeve (602). The spring (603) is fixedly connected to the top of the connecting frame (601), and a decorative base plate (7) is fixedly installed at the bottom of the connecting frame (601).

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