Concrete civil air defense door frame

Abstract

The utility model discloses a concrete civil air defense door frame which comprises a rectangular inner frame and a rectangular outer frame which are in a closed ring shape, and a door frame side plate is connected between the inner circumferential side face of the rectangular outer frame and the inner circumferential side face of the rectangular inner frame. A concrete pouring groove surrounding the door frame side plate is formed between the door frame side plate and the rectangular inner frame and between the door frame side plate and the rectangular outer frame, reinforcing rods arranged in the concrete pouring groove are arranged on the periphery of the door frame side plate, and the two ends of each reinforcing rod abut against the groove wall of the concrete pouring groove. The reinforcing rod comprises a middle rod, end rods are arranged at the two ends of the middle rod respectively, the end rods and the middle rod are arranged in parallel, and transition rods are connected between the end rods and the middle rod in series. The civil air defense door frame has the advantages of being convenient to manufacture and machine, high in connection strength, complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense equipment, and more specifically, it relates to a concrete civil air defense door frame. Background Art

[0002] Before the door frame of the civil air defense door is poured together with the wall, it needs to be fixed on the steel bars embedded in the wall first, and then the connection is realized through concrete pouring. In order to enhance the connection strength between the civil air defense door frame and the concrete, a large number of steel bars are usually welded in the pouring groove on the outer periphery of the door frame, so that the injected concrete is connected with the steel bars to achieve the effect of enhancing the connection strength.

[0003] Since the short steel bars used for welding need to be cut according to length first and then welded one by one, the operation is cumbersome and time-consuming, and the overall effect is not good. Accordingly, the utility model provides a concrete civil air defense door frame. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art, and provide a concrete civil air defense door frame, which has the characteristics of convenient manufacturing and processing and high connection strength.

[0005] To solve the above technical problems, the purpose of the utility model is realized as follows: A concrete civil air defense door frame according to the utility model includes a rectangular inner frame and a rectangular outer frame in a closed ring shape. A door frame side plate is connected between the inner peripheral side of the rectangular outer frame and the inner peripheral side of the rectangular inner frame. A concrete pouring groove surrounding the door frame side plate is formed between the door frame side plate and the rectangular inner frame and the rectangular outer frame. Reinforcing rods are provided in the concrete pouring groove around the four sides of the door frame side plate, and both ends of the reinforcing rods are respectively abutted against the groove walls of the concrete pouring groove.

[0006] The utility model is further provided that: The reinforcing rod includes an intermediate rod, and end rods are respectively provided at both ends of the intermediate rod. The end rods are arranged parallel to the intermediate rod, and a transition rod is connected in series between the end rod and the intermediate rod.

[0007] The utility model is further provided that: The angles between the transition rod and the end rod and between the transition rod and the intermediate rod are both less than 90°.

[0008] The utility model is further provided that: The intermediate rod, the end rod and the transition rod are of an integral structure.

[0009] The utility model is further provided that: Positioning chutes extending from the edge to the center are respectively provided on the end faces of the rectangular inner frame facing the rectangular outer frame and the end faces of the rectangular outer frame facing the rectangular inner frame. One end of the positioning chute close to the edge is connected to the outside, and the end of the reinforcing rod is clamped in the positioning chute.

[0010] In summary, the utility model has the following beneficial effects: The concrete civil air defense door frame involved in the utility model arranges reinforcing rods that abut against the two side walls of the concrete pouring groove at intervals, replaces welding with a clamping fit, is convenient to install, and can use the reinforcing rods to increase the contact area with the injected concrete, so that the connection strength after solidification is higher, the manufacturing and processing are convenient, the connection strength is high, the overall function is perfect, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the overall structural schematic diagram of the utility model;

[0012] Figure 2 is Figure 1 the enlarged structural schematic diagram of part A in

[0013] Figure 3 is the structural schematic diagram of the utility model for embodying the reinforcing rods. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following describes the preferred implementation schemes of the present utility model in combination with specific embodiments. However, it should be understood that these descriptions are only for further explaining the features and advantages of the present utility model, rather than limiting the patent requirements of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0015] The present utility model will be further described below in conjunction with the drawings and preferred embodiments.

[0016] Embodiment 1

[0017] Referring to Figures 1 to 3 as shown, a concrete civil air defense door frame involved in this embodiment includes a rectangular inner frame 1 and a rectangular outer frame 2 in a closed ring shape. A door frame side plate 3 is connected between the inner peripheral side surface of the rectangular outer frame 2 and the inner peripheral side surface of the rectangular inner frame 1. A concrete pouring groove 4 surrounding the outside of the door frame side plate is formed between the door frame side plate 3 and the rectangular inner frame 1 and the rectangular outer frame 2. Reinforcing rods 5 are provided at the four circumferences of the door frame side plate 3 and are arranged in the concrete pouring groove. The two ends of the reinforcing rods 5 respectively abut against the groove walls of the concrete pouring groove 4.

[0018] Furthermore, the reinforcing rod 5 includes an intermediate rod 51. End rods 52 are respectively provided at the two ends of the intermediate rod 51. The end rods 52 are arranged parallel to the intermediate rod 51. A transition rod 53 is connected in series between the end rods 52 and the intermediate rod 51.

[0019] Furthermore, the included angles between the transition rod 53 and the end rod 52, and between the transition rod 53 and the middle rod 51 are both less than 90°.

[0020] Furthermore, the middle rod 51, the end rod 52, and the transition rod 53 are of an integral structure.

[0021] In this embodiment, by fitting a certain number of reinforcing rods 5 in the concrete pouring groove 4, with both ends of the reinforcing rods 5 tightly abutted against the groove walls of the concrete pouring groove 4, welding is not required when installing the reinforcing rods 5, and the operation is convenient and fast.

[0022] Among them, by setting the reinforcing rod 5 as a bent structure composed of a middle rod 51, an end rod 52, and a transition rod 53, the rod body has resilience in the length direction, which is convenient for fitting and installation, and is more secure and not easy to loosen after fitting and installation.

[0023] Embodiment 2

[0024] See Figures 1 to 3 As shown, for a concrete civil air defense door frame involved in this embodiment, on the basis of Embodiment 1, it is further set that positioning sliding grooves 6 extending from the edge to the center are respectively provided on the end face of the rectangular inner frame 1 facing the rectangular outer frame 2 and on the end face of the rectangular outer frame 2 facing the rectangular inner frame 1. One end of the positioning sliding groove 6 close to the edge is connected to the outside, and the end of the reinforcing rod 5 is clamped in the positioning sliding groove 6.

[0025] In this embodiment, through the setting of the positioning sliding groove 6, it serves as a guiding and positioning function when the reinforcing rod 5 is fitted and installed.

[0026] For the concrete civil air defense door frame involved in the present utility model, by arranging reinforcing rods that abut against the two side groove walls at intervals in the concrete pouring groove, welding is replaced by a fitting method, which is convenient for installation. At the same time, the reinforcing rods can be used to increase the contact area with the injected concrete, making the connection strength higher after solidification, the manufacturing and processing are convenient, the connection strength is high, the overall function is perfect, and the practicability is strong.

[0027] Unless otherwise specified, in this utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial direction", "radial direction", "circumferential direction", etc., the indicated orientation or positional relationship is based on the actual shown orientation or positional relationship. It is only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms used to describe the orientation or positional relationship in this utility model are only for exemplary illustration and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood in combination with the embodiments and according to the specific circumstances.

[0028] Unless otherwise clearly specified and defined, in this utility model, if there are terms such as "arranged", "connected" and "coupled", they shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0029] The preferred specific embodiments of this utility model have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of this utility model without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of this application through logical analysis, reasoning, or limited experiments based on the concept of this utility model on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A concrete civil air defense door frame, comprising a rectangular inner frame and a rectangular outer frame in a closed ring shape, a door frame side plate is connected between the inner peripheral side of the rectangular outer frame and the inner peripheral side of the rectangular inner frame, and a concrete casting groove surrounding the door frame side plate is formed between the door frame side plate and the rectangular inner frame and the rectangular outer frame, characterized in that: Reinforcement rods arranged in the concrete casting groove are arranged around the side plates of the door frame, and the two ends of the reinforcement rods are respectively pressed against the groove walls of the concrete casting groove.

2. The concrete civil air defense door frame according to claim 1 is characterized in that: The reinforcement rod comprises an intermediate rod, and end rods are respectively arranged at both ends of the intermediate rod. The end rods are arranged in parallel with the intermediate rod, and a transition rod is serially connected between the end rod and the intermediate rod.

3. The concrete civil air defense door frame according to claim 2 is characterized in that: The angle between the transition rod and the end rod, and the angle between the transition rod and the middle rod are both less than 90°.

4. The concrete civil air defense door frame according to claim 3 is characterized in that: The middle rod, the end rod and the transition rod are an integrated structure.

5. The concrete civil air defense door frame according to any one of claims 1 to 4, characterized in that: Positioning grooves extending from the edge to the center are respectively provided on the end surface of the rectangular inner frame facing the rectangular outer frame and on the end surface of the rectangular outer frame facing the rectangular inner frame. The end of the positioning groove close to the edge is connected to the outside world, and the end of the reinforcement rod is stuck in the positioning groove.

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