Prefabricated part lifting point structure

Abstract

The utility model discloses a prefabricated part lifting point structure, which belongs to the technical field of prefabricated parts, and comprises four groups of longitudinal reinforcing steel bar groups, a plurality of stirrup units are arranged on the inner sides of the four groups of longitudinal reinforcing steel bar groups, and lifting point mechanisms are arranged on the stirrup units. And cast-in-place concrete is arranged on the outer sides of the longitudinal steel bar groups, the stirrup units and the lifting point mechanisms. When the prefabricated part is machined, the bottom ends of the U-shaped steel bar frames are connected with the bottoms of the inner stirrups on the stirrup units respectively, meanwhile, the arc hanging rings at the top ends of the U-shaped steel bar frames are aligned, and when the prefabricated part is hoisted and used after being poured and formed, the hanging ropes are connected with the arc hanging rings; at the moment, the arc hanging rings, the stirrup units, the cast-in-place concrete and the longitudinal steel bar sets are connected into a whole, the connection firmness between the arc hanging rings and the prefabricated part is guaranteed, and practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of precast components, and more specifically, to a hoisting point structure for precast components. Background Art

[0002] Precast components refer to steel, wood or concrete components prefabricated in factories or on-site according to design specifications. With the development of the construction industry, the problem of difficult construction technology for precast components has been increasingly emphasized in engineering practice. When installing precast components, hoisting equipment is needed to lift the precast components. At the same time, during the production process of precast components, hoisting points need to be set at appropriate positions of the precast components for hoisting the precast components.

[0003] After retrieval, the utility model patent with the publication number of CN208151869U discloses a hoisting point structure for precast components, including steel strands, an outer steel pipe for protecting the steel strands, a P anchor located in the concrete part of the component for fixing the steel strands, and a buried steel plate for protecting the concrete part and the steel strands; part of the steel strands are embedded in the concrete part; the patent has the following advantages: 1. It can hoist precast components at different heights, realize flipping at different angles, and is not easy to damage the component body; 2. The process is simple, saving manufacturing costs, and can shorten the construction period and improve the project quality. However, the above patent also has the following deficiencies: The steel strands are only connected to the concrete part of the precast component. When hoisting, the steel strands directly apply force to the concrete part, and the connection firmness is poor, thus affecting the hoisting stability. For this reason, we propose a hoisting point structure for precast components. Summary of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a hoisting point structure for precast components.

[0005] To solve the above problems, the utility model adopts the following technical solutions:

[0006] A hoisting point structure for precast components includes four groups of longitudinal steel bar groups. A plurality of stirrup units are arranged inside the four groups of longitudinal steel bar groups. Among them, a hoisting point mechanism is arranged on a plurality of the stirrup units. Cast-in-place concrete is arranged outside the longitudinal steel bar groups, stirrup units and hoisting point mechanism. The hoisting point mechanism includes a plurality of U-shaped steel bar frames. The bottom ends of the plurality of U-shaped steel bar frames are respectively connected to a plurality of the stirrup units. The top ends of the plurality of U-shaped steel bar frames are all provided with arc-shaped lifting rings. A plurality of the arc-shaped lifting rings all extend to the top of the cast-in-place concrete, and a plurality of the arc-shaped lifting rings are aligned.

[0007] As a preferred embodiment of the present utility model, the stirrup unit includes an outer stirrup fixedly connected to the inner sides of four groups of longitudinal steel bars. A plurality of connecting bars are fixedly connected to the top of the outer stirrup, and an inner stirrup is fixedly connected to the bottom surfaces of the plurality of connecting bars. The bottom end of the U-shaped steel bar frame penetrates through the bottom of the inner stirrup and is connected to the bottom surface of the inner stirrup.

[0008] As a preferred embodiment of the present utility model, the height dimensions of the plurality of U-shaped steel bar frames are adapted to the height of the plurality of stirrup units in the cast-in-place concrete.

[0009] As a preferred embodiment of the present utility model, the widths of the plurality of U-shaped steel bar frames gradually increase from the inside to the outside, and two adjacent U-shaped steel bar frames are connected to each other.

[0010] As a preferred embodiment of the present utility model, the plurality of stirrup units are evenly distributed inside the cast-in-place concrete from bottom to top.

[0011] As a preferred embodiment of the present utility model, the top ends of the four groups of longitudinal steel bar groups all extend to the top of the cast-in-place concrete.

[0012] Compared with the prior art, the advantages of the present utility model are as follows:

[0013] In the present utility model, during the processing of the precast member, the bottom ends of the plurality of U-shaped steel bar frames are respectively connected to the bottoms of the inner stirrups on the plurality of stirrup units, and at the same time, the arc lifting rings at the top ends of the plurality of U-shaped steel bar frames are aligned. When the precast member is hoisted after being cast and formed, the lifting rope is connected to the arc lifting ring. At this time, the arc lifting ring, the stirrup unit, the cast-in-place concrete and the longitudinal steel bar group are connected into a whole, ensuring the connection firmness between the arc lifting ring and the precast member; in addition, the lifting force received by the arc lifting ring during lifting can be respectively transmitted to the plurality of stirrup units and the cast-in-place concrete through the U-shaped steel bar frames, so that the lifting force received by the arc lifting ring is distributed to the plurality of stirrup units inside the cast-in-place concrete, ensuring the stability of hoisting the precast member and improving the practicability of the hoisting point structure of the precast member. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is an exploded view of the overall structure of the present utility model;

[0016] Figure 3 is a schematic diagram of the connection structure of the longitudinal steel bar group, the stirrup unit and the hoisting point mechanism of the present utility model;

[0017] Figure 4 is a schematic diagram of the connection structure of the stirrup unit and the hoisting point mechanism of the present utility model;

[0018] Figure 5 is a schematic structural diagram of the lifting point mechanism of the present utility model;

[0019] Figure 6 is a schematic structural diagram of the stirrup unit of the present utility model.

[0020] Explanation of the reference numerals in the figure: 1. Longitudinal steel bar group; 2. Stirrup unit; 3. Cast-in-place concrete; 4. Lifting point mechanism; 5. U-shaped steel bar frame; 6. Arc lifting ring; 7. Outer stirrup; 8. Inner stirrup; 9. Connecting bar. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of 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.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present 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, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] Embodiment:

[0025] Please refer to Figure 1-6, A lifting point structure for precast components, including four groups of longitudinal steel bar groups 1. Multiple stirrup units 2 are arranged inside the four groups of longitudinal steel bar groups 1. Among them, a lifting point mechanism 4 is arranged on multiple stirrup units 2. Cast-in-place concrete 3 is arranged outside the longitudinal steel bar groups 1, stirrup units 2 and lifting point mechanism 4. The lifting point mechanism 4 includes multiple U-shaped steel bar frames 5. The bottom ends of multiple U-shaped steel bar frames 5 are respectively connected to multiple stirrup units 2 among them. The top ends of multiple U-shaped steel bar frames 5 are all provided with arc lifting rings 6. Multiple arc lifting rings 6 all extend to the top of the cast-in-place concrete 3, and multiple arc lifting rings 6 are aligned with each other.

[0026] Specifically, please refer to Figure 4 and Figure 6 , The stirrup unit 2 includes an outer stirrup 7 fixedly connected to the inside of the four groups of longitudinal steel bar groups 1. Multiple connecting bars 9 are fixedly connected to the top of the outer stirrup 7. An inner stirrup 8 is fixedly connected to the bottom surface of multiple connecting bars 9. The bottom end of the U-shaped steel bar frame 5 penetrates through the bottom of the inner stirrup 8 and is connected to the bottom surface of the inner stirrup 8.

[0027] In this embodiment, between the longitudinal steel bar group 1 and the outer stirrup 7, the outer stirrup 7 and the connecting bar 9, the connecting bar 9 and the inner stirrup 8, and the U-shaped steel bar frame 5 and the inner stirrup 8, they can all be connected by welding or bundling with thin steel wires.

[0028] Specifically, please refer to Figure 4 , The height dimensions of multiple U-shaped steel bar frames 5 are adapted to the height of multiple stirrup units 2 located in the cast-in-place concrete 3.

[0029] In this embodiment, it is ensured that the bottom ends of multiple U-shaped steel bar frames 5 can respectively pass through the lower part of the inner stirrups 8 in the middle of multiple stirrup units 2.

[0030] Specifically, please refer to Figure 5 , The widths of multiple U-shaped steel bar frames 5 gradually increase from the inside to the outside, and two adjacent U-shaped steel bar frames 5 are connected to each other.

[0031] In this embodiment, it is ensured that multiple U-shaped steel bar frames 5 from the inside to the outside can fit together. At the same time, multiple U-shaped steel bar frames 5 can be welded or bundled with thin steel wires to ensure the firmness between multiple U-shaped steel bar frames 5. At the same time, it also ensures that multiple arc lifting rings 6 fit together, which is convenient for lifting.

[0032] Specifically, please refer to Figure 2 and Figure 3 , Multiple stirrup units 2 are evenly distributed inside the cast-in-place concrete 3 from bottom to top.

[0033] In this embodiment, multiple stirrup units 2 and four groups of longitudinal steel bar groups 1 are used to ensure the strength of the precast component.

[0034] Specifically, please refer to Figure 1, the top ends of the four groups of longitudinal steel bar groups 1 all extend to the top of the cast-in-place concrete 3.

[0035] In this embodiment, the longitudinal steel bar groups 1 extending to the top of the cast-in-place concrete 3 of the precast member are used to connect to other precast members.

[0036] Working principle: During use, first, the outer stirrups 7, inner stirrups 8 and connecting bars 9 are combined into a stirrup unit 2 by welding or tying with thin steel wires, and several such stirrup units 2 are produced. Then, the bottoms of the inner stirrups 8 of multiple stirrup units 2 are respectively passed through the U-shaped steel bar frames 5 with different depths and widths, and the arc-shaped lifting rings 6 at the tops of the multiple U-shaped steel bar frames 5 are aligned. Additionally, multiple groups of longitudinal steel bar groups 1 are welded or tied with steel wires on the outer sides of the multiple stirrup units 2, so that the longitudinal steel bar groups 1, stirrup units 2 and lifting point mechanisms 4 form an internal steel bar frame for precast member casting. Then, this internal steel bar frame is placed into a casting mold, and concrete is poured into the mold to form the cast-in-place concrete 3, thus producing a precast member. At the same time, the top ends of the longitudinal steel bar groups 1 and the arc-shaped lifting rings 6 are both located at the top of the cast-in-place concrete 3. Finally, when hoisting this precast member, the lifting rope is directly connected to the arc-shaped lifting ring 6. When lifting, the lifting force received by the arc-shaped lifting ring 6 can be respectively transmitted to the multiple stirrup units 2 and the cast-in-place concrete 3 through the U-shaped steel bar frames 5, ensuring the stability of the hoisting of this precast member.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A prefabricated component hanging point structure, comprising four groups of longitudinal steel bars (1), characterized in that: A plurality of stirrup units (2) are arranged on the inner side of the four groups of longitudinal steel bar groups (1), wherein a plurality of the stirrup units (2) are provided with a suspension point mechanism (4), and cast-in-place concrete (3) is arranged on the outer side of the longitudinal steel bar groups (1), the stirrup units (2) and the suspension point mechanism (4), wherein the suspension point mechanism (4) comprises a plurality of U-shaped steel bar frames (5), wherein the bottom ends of the plurality of U-shaped steel bar frames (5) are respectively connected to a plurality of the stirrup units (2), and the top ends of the plurality of U-shaped steel bar frames (5) are provided with circular arc suspension rings (6), wherein the plurality of circular arc suspension rings (6) extend to the top of the cast-in-place concrete (3), and the plurality of circular arc suspension rings (6) are aligned with each other.

2. The prefabricated component hanging point structure according to claim 1, characterized in that: The stirrup unit (2) comprises an outer stirrup (7) fixedly connected to the inner side of four groups of longitudinal steel bars (1); a plurality of connecting bars (9) are fixedly connected to the top of the outer stirrup (7); an inner stirrup (8) is fixedly connected to the bottom of the plurality of connecting bars (9); and the bottom end of the U-shaped steel bar frame (5) passes through the bottom of the inner stirrup (8) and is connected to the bottom of the inner stirrup (8).

3. The prefabricated component hanging point structure according to claim 1, characterized in that: The height dimensions of the plurality of U-shaped steel bar frames (5) are adapted to the height of the plurality of stirrup units (2) located in the cast-in-place concrete (3).

4. The prefabricated component hanging point structure according to claim 1, characterized in that: The widths of the plurality of U-shaped steel bars (5) gradually increase from the inside to the outside, and two adjacent U-shaped steel bars (5) are connected to each other.

5. The prefabricated component hanging point structure according to claim 1, characterized in that: The plurality of stirrup units (2) are evenly distributed inside the cast-in-place concrete (3) from bottom to top.

6. The prefabricated component hanging point structure according to claim 1, characterized in that: The top ends of the four groups of longitudinal steel bar groups (1) all extend to the top of the cast-in-place concrete (3).

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