Embedded hanging ring for civil air defense door on construction site

Abstract

The utility model discloses an embedded hanging ring for a civil air defense door on a construction site, which relates to the technical field of civil air defense door installation on the construction site, comprises a reinforcing steel bar bent fixing piece body and a reinforcing steel bar hanging ring body, and is characterized in that a first opening is formed in the tail end of the reinforcing steel bar bent fixing piece body; a second opening is formed in the end, connected with the steel bar bending fixing piece body, of the steel bar hanging ring body, and the first opening is connected with the second opening in a sleeved mode. A rolling structure is arranged in the steel bar bending fixing piece body, a limiting rod is arranged in the steel bar hanging ring body, and the rolling structure is connected with the limiting rod. The reinforcing steel bar bending fixing piece body and the reinforcing steel bar hanging ring body are connected together in a sleeved mode, the reinforcing steel bar hanging ring body does not need to be externally connected, the two forms can be freely switched through the winding structure when the reinforcing steel bar bending fixing piece is used, and the effect that attractiveness and practicability coexist is achieved.

Description

Technical Field

[0001] This utility model relates to the field of installation technology of civil defense doors at construction sites, and in particular to a pre-embedded lifting ring for civil defense doors at construction sites. Background Technology

[0002] Because of their excessive weight, air-raid shelter doors are difficult to install on-site without the aid of hoisting equipment. Using other construction machinery (such as excavators) for installation is difficult to operate and poses safety hazards. Therefore, when designing air-raid shelter structures, lifting rings are usually pre-embedded at the location of the air-raid shelter door to facilitate hoisting and installation.

[0003] Traditional pre-embedded lifting rings are used (see Figure 1 Structural disadvantages: The installation of air-raid shelter doors is a one-time operation. After the construction is completed, the lifting rings will remain unused until the next maintenance of the air-raid shelter doors. During the period of inactivity, the protruding lifting rings are not aesthetically pleasing and are likely to rust and corrode, which will pose a safety hazard during maintenance.

[0004] A pre-embedded lifting ring for a civil defense door at a construction site, with publication number CN 215364525 U, includes a Y-shaped pre-embedded reinforcing bar and a lifting ring body embedded in the basement ceiling slab. The bottom of the straight section of the Y-shaped pre-embedded reinforcing bar has an external thread, and the top of the lifting ring body has a protrusion with an internal threaded hole. The external thread and the internal threaded hole are threaded together to connect the Y-shaped pre-embedded reinforcing bar to the lifting ring body. The external thread is embedded in the basement ceiling slab. The ends of the two inclined sections of the Y-shaped pre-embedded reinforcing bar are respectively fixedly connected to reinforcing bar bending fasteners. The pre-embedded lifting ring is recyclable, significantly reducing the number of lifting rings used in a project. Used rings can still be used in other projects, reducing material resource waste and demonstrating environmental friendliness. Compared to the original structure, the amount of reinforcing steel used is reduced, making it economical.

[0005] However, the bottom of the straight section of the Y-shaped embedded steel bar in this application has an external thread that may rust over time. This could lead to instability when connected to the steel bar lifting ring body, potentially posing a safety hazard during maintenance. Summary of the Invention

[0006] To address the aforementioned problems, this utility model aims to provide a pre-embedded lifting ring for construction site air-raid shelter doors. By connecting the steel bar bending and fixing body and the steel bar lifting ring body together, an external steel bar lifting ring body is not required. Furthermore, during use, the two forms can be switched at will through the winding structure, achieving both aesthetic appeal and practicality.

[0007] The main idea of ​​the technical solution adopted in this utility model is to connect the main body of the rebar lifting ring and the main body of the rebar bending and fixing component through an opening, and through a winding structure, so that when the main body of the rebar lifting ring is not in use, it is at a 90° angle with the main body of the rebar bending and fixing component, with no protruding parts, so that it will not protrude during the idle period and affect the appearance. When in use, the rewinding structure can be used to connect the main body of the rebar bending component and the main body of the rebar lifting ring at a 180° angle, which is very practical.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] The embedded lifting ring for the civil defense door at the construction site includes a steel bar bending and fixing component body and a steel bar lifting ring body. The characteristic is that: the end of the steel bar bending and fixing component body is provided with a first opening, and the end of the steel bar lifting ring body connected to the steel bar bending and fixing component body is provided with a second opening, and the first opening and the second opening are connected in a sleeve.

[0010] The main body of the rebar bending and fixing component is provided with a winding structure, and the end of the rebar lifting ring body connected to the main body of the rebar bending and fixing component is provided with a limiting rod, and the winding structure is connected to the limiting rod.

[0011] Furthermore, the winding structure includes a fixed shaft fixed to the outer wall of the end of the steel bar bending fastener body, a reel sleeved on the fixed shaft, and a connector wound around the reel, one end of which is fixed to the reel.

[0012] Furthermore, the other end of the connector is fixedly mounted on the limiting rod.

[0013] Furthermore, the connecting component is made of spring steel.

[0014] The beneficial effects of this utility model are as follows: Compared with the prior art, the improvements of this utility model are:

[0015] By cooperating with the main body of the rebar bending fastener, the main body of the rebar lifting ring, the No. 1 opening, and the No. 2 opening, the main body of the rebar bending fastener and the main body of the rebar lifting ring can be connected through the No. 1 opening and the No. 2 opening, which are opened on their own. No external threads are needed to connect the two. There is no risk of the connection being unstable due to the rust of external threads, making it safer to use.

[0016] Through the coordinated operation of the rebar bending and fixing body, the winding structure, the rebar lifting ring body, and the limiting rod, the rebar bending and fixing body and the rebar lifting ring body can be fixed at 90° by the winding structure when not in use. This prevents the rebar lifting ring body from protruding from the air-raid shelter door during idle periods. When in use, the rewinding structure can straighten the rebar lifting ring body and the rebar bending and fixing body to 180° for easy use. In other words, a single winding structure allows the rebar lifting ring body and the rebar bending and fixing body to transform into two forms, corresponding to the use period and the idle period, respectively, achieving both aesthetic and safety benefits. Attached Figure Description

[0017] Figure 1 This is a front view of an existing pre-embedded lifting ring.

[0018] Figure 2 This is a front view of the pre-embedded lifting ring of this utility model.

[0019] Figure 3 This is an enlarged view of part A of the pre-embedded lifting ring of this utility model.

[0020] Figure 4 This is a side perspective view of the pre-embedded lifting ring of this utility model.

[0021] Figure 5 This is a side perspective dynamic view of the pre-embedded lifting ring of this utility model.

[0022] The components include: 1. Rebar bending and fixing body; 2. Rebar lifting ring body; 3. No. 1 opening; 4. No. 2 opening; 5. Fixing shaft; 6. Roller; 7. Limiting rod; 8. Connecting parts. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Please see Figures 1-5 This application discloses a pre-embedded lifting ring for a civil defense door at a construction site, including a steel bar bending and fixing body 1 and a steel bar lifting ring body 2. The end of the steel bar bending and fixing body 1 is provided with a first opening 3, and the end of the steel bar lifting ring body 2 connected to the steel bar bending and fixing body 1 is provided with a second opening 4. The first opening 3 and the second opening 4 are sleeved and connected, so that the steel bar lifting ring body 2 and the steel bar bending and fixing body 1 can be sleeved on themselves without the need for external thread connection, which is more secure.

[0025] It should be noted that, as Figure 2As shown, the main body 1 of the rebar bending and fixing component consists of two symmetrical hooks. Each hook has a first opening 3 near the end of the rebar lifting ring body 2. The rebar lifting ring body 2 is specifically a U-shaped lifting ring. The two ends of the U-shaped lifting ring near the rebar bending and fixing component body 1 also have second openings 4. The connection process of the first opening 3 and the second opening 4 is the same as the chain fastening process, which will not be described in detail here.

[0026] In order to ensure that the steel bar lifting ring body 2 does not protrude from the air-raid shelter door when idle, and that the steel bar lifting ring body 2 can be connected to the steel bar bending fastener body 1 at a 180° angle during use, this application also provides a winding structure on the outer wall of the end of the steel bar bending fastener body 1. A limiting rod 7 is provided at the end of the steel bar lifting ring body 2 connected to the steel bar bending fastener body 1, and the winding structure is connected to the limiting rod 7.

[0027] Specifically, the winding structure includes a fixed shaft 5 welded between two hooks of the steel bar bending fixing body 1, a reel 6 sleeved on the fixed shaft 5, and a connector 8 wound around the reel 6, with one end of the connector 8 fixed on the reel 6.

[0028] More specifically, the reel 6 is a stainless steel fixed pulley fitted onto the fixed shaft 5. The fixed pulley is thicker at both ends and thinner in the middle. A damper (not shown) is installed between the reel 6 and the fixed shaft 5. The damper is a device that provides resistance to motion and reduces motion energy. By converting mechanical vibration energy into heat energy, the damper reduces the vibration and impact of the equipment, thereby protecting the equipment and improving the stability of the system. The damper is welded between the fixed shaft 5 and the reel 6 to reduce the vibration and impact generated when the reel 6 rolls on the fixed shaft 5, thereby improving the stability between the fixed shaft 5 and the reel 6. The connecting piece 8 is made of spring steel. One end of the spring steel is welded to the middle part of the fixed pulley, and after being wound around the fixed pulley several times, the other end is welded to the limiting rod 7 on the steel bar lifting ring body 2.

[0029] It should be noted that the two ends of the limiting rod 7 are welded to the two ends of the rebar lifting ring body 2, respectively, and are located at the two ends of the rebar lifting ring body 2 closest to the rebar bending fixing body 1. Spring steel is an alloy steel specifically used to manufacture various springs and other elastic components. It possesses excellent comprehensive properties, including high purity and uniformity, good surface quality, and precise shape and dimensions. These characteristics enable spring steel to deform under external force and return to its original shape after the external force is removed, thus exhibiting elasticity.

[0030] The steel bar lifting ring body 2 can be connected to the steel bar bending and fixing body 1 by means of spring steel. Furthermore, due to the properties of the spring steel itself, the steel bar lifting ring body 2 on the air-raid shelter door can be connected to the steel bar bending and fixing body 1 at a 90° angle when not in use. Figure 5As shown, when the steel bar lifting ring body 2 is needed for maintenance of the air-raid shelter door, it can be connected to the steel bar bending and fixing member body 1 at a 180° angle. Figure 4 As shown, it is easy to maintain and use, and based on the characteristics of spring steel itself, after use, the rebar lifting ring body 2 can quickly restore the 90° connection with the rebar bending fixing body 1, which is convenient to use and does not affect the aesthetics. Example 1

[0031] During periods when the air-raid shelter door needs to be unoccupied, to prevent the steel bar lifting ring body 2 from being exposed on the door and affecting its appearance, a retractable structure can be used to connect the steel bar lifting ring body 2 and the steel bar bending fastener body 1 at a 90° angle. In use, the first opening 3 at the end of the steel bar bending fastener body 1 and the second opening 4 at the end where the steel bar lifting ring body 2 connects to the steel bar bending fastener body 1 are connected, allowing the steel bar lifting ring body 2 and the steel bar bending fastener body 1 to be fitted together independently. Then, the fixing shaft 5 is welded... The outer wall of the end of the steel bar bending and fixing component is then connected to the fixed shaft 5. One end of the spring steel is then welded to the middle part of the roller 6. Several turns are then made on the roller 6. The other end of the spring steel is then welded to the limiting rod 7 of the steel bar lifting ring body 2. Relying on the elasticity of the spring steel and the resistance of the damper, the other end of the spring steel pulls the steel bar lifting ring body 2 up to a state parallel to the surface of the air defense door and will not easily fall off. This prevents the steel bar lifting ring body 2 from being exposed on the surface of the air defense door, achieving an aesthetic effect. Example 2

[0032] The usage process of the steel bar lifting ring body 2 and the steel bar bending fixing body 1 during the idle period, as well as the winding structure, are the same as in Embodiment 1. The only difference is that when maintenance of the air-raid shelter door is required, the winding structure can be used to connect the steel bar lifting ring body 2 and the steel bar bending fixing body 1 at a 180° angle. During maintenance, the steel bar lifting ring body 2 needs to be manually or with the aid of tools to be pulled up in order to maintain the air-raid shelter door. Therefore, the steel bar lifting ring body 2 is directly pulled manually or with the aid of tools to a state where it is connected to the steel bar bending fixing body 1 at a 180° angle. During the pulling process, because the steel bar lifting ring body 2 is pulled downward, the spring steel fixedly connected to the limiting rod 7 of the steel bar lifting ring body 2 will be stretched, stretched to the point where... Figure 4 The condition shown is acceptable; then proceed with the repairs.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An embedded lifting ring for a civil defense door at a construction site, comprising a steel bar bending and fixing body (1) and a steel bar lifting ring body (2), characterized in that: The end of the steel bar bending and fixing body (1) is provided with a first opening (3), and the end of the steel bar lifting ring body (2) is provided with a second opening (4). The first opening (3) and the second opening (4) are connected in a sleeve. The main body (1) of the steel bar bending and fixing component is provided with a winding structure, and the main body (2) of the steel bar lifting ring is provided with a limiting rod (7). The winding structure is connected to the limiting rod (7).

2. The embedded lifting ring for a construction site air-raid shelter door according to claim 1, characterized in that: The winding structure includes a fixed shaft (5) fixed to the outer wall of the end of the steel bar bending fixing body (1), a reel (6) sleeved on the fixed shaft (5), and a connector (8) wound around the reel (6), one end of the connector (8) being fixed on the reel (6).

3. The embedded lifting ring for a construction site air-raid shelter door as described in claim 2, characterized in that: The other end of the connector (8) is fixed on the limiting rod (7).

4. The embedded lifting ring for a construction site air-raid shelter door according to claim 3, characterized in that: The connecting piece (8) is made of spring steel.

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