Breaking type pre-embedded wall connecting piece

Abstract

The utility model discloses a snapping type pre-embedded wall connecting piece which comprises a bottom plate, a threaded conical rod, a shear force rod, a steel pipe fitting and a nut, one end of the threaded conical rod is a conical column body with the diameter gradually increasing, and the other end of the threaded conical rod is a screw rod with the diameter smaller than the maximum diameter of the threaded conical rod. The wall connecting piece is simple and small in structure, not prone to being lost, low in cost, convenient to install, easy to pre-embed and free of influence on follow-up wall construction, the wall connecting piece of a metal structure can bear strong impact and vibration, and the wall connecting piece of the metal structure can be used for connecting the wall connecting piece of the metal structure to the wall connecting piece of the metal structure to the wall connecting piece of the metal structure to the wall connecting piece of the metal structure. The conical structure does not need to be provided with a protective sleeve, direct strong drawing is carried out, so that the shearing force of the shearing force rod can be recycled after being damaged and broken, the consumable cost is greatly reduced, the drawing resistance not smaller than the sliding resistance of the fastener can be met by reasonably designing the size, the installation depth is small, the use function of reinforced concrete is not affected, and repairing is easy.

Description

Technical Field

[0001] This utility model relates to wall ties used in building construction, specifically a pull-out type pre-embedded wall tie. Background Technology

[0002] Currently, commonly used wall ties in construction projects involve pre-embedded steel pipes, nuts, and external accessories for connection, or methods such as wall penetration and column clamping. Using pre-embedded steel pipes can affect subsequent wall construction, and the cutting of the pre-embedded steel pipes and repair of the openings during removal require considerable time and expense. Using pre-embedded nuts requires a plastic casing, bolts, and matching accessories for connection; the plastic casing must be protected from strong impacts and vibrations, as problems could lead to the loss of the wall tie. Column clamping is mainly a temporary connection method used when pre-embedding is difficult, and therefore is not convenient to use. To address these issues, existing wall ties need to be improved. Utility Model Content

[0003] The purpose of this utility model is to provide a pull-out type pre-embedded wall tie to solve the problems of the wall ties commonly used in current construction engineering, which involve pre-embedded steel pipes, nuts, and external accessories, or methods such as through-wall and column clamping. Using pre-embedded steel pipes will affect subsequent wall construction, and the cutting of pre-embedded steel pipes and repair of openings during removal will take a lot of time and cost. Using pre-embedded nuts requires the use of plastic shells, screws, and matching accessories for connection. The plastic shells need to be protected from strong impacts and vibrations, and problems may lead to the loss of the wall tie. The column clamping method is mainly a temporary connection method used when pre-embedding is difficult.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pull-out type pre-embedded wall tie, including a base plate, a threaded cone rod, a shear rod, a steel pipe fitting, and a nut. One end of the threaded cone rod is a tapered column with a gradually increasing diameter, and the other end is a threaded rod with a diameter smaller than the maximum diameter of the threaded cone rod. A through pin hole is provided at the end of the tapered column with the smallest diameter, and a shear rod matching its size passes through the pin hole.

[0005] Preferably, the steel pipe fitting is composed of a steel pipe and a steel plate, the plane of the steel plate is larger than the outer cross-section of the steel pipe, and the steel plate is fixed to one end of the steel pipe. At the same time, bolt holes are opened on the steel plate outside the outer cross-section of the steel pipe.

[0006] Preferably, the steel pipe and steel plate are fixed by welding.

[0007] Preferably, the screw can pass through the bolt hole, and the end of the screw is threaded with a nut.

[0008] Preferably, the tapered column and shear bar are embedded in concrete.

[0009] Preferably, the threaded tapered rod, shear rod, and nut are made of steel.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This wall tie is equipped with a threaded tapered rod, a shear rod, a steel pipe fitting, and a nut. This wall tie has a simple and compact structure, is not easily lost, has low cost, is easy to install, is easy to pre-embed, and does not affect subsequent wall construction. The wall tie using a metal structure can withstand strong impacts and vibrations. The design of the tapered column and shear rod allows the pre-embedded parts to be recovered by strong pull-out without protective sleeves, thereby causing the shear rod to break and break. The material cost is greatly reduced. The threaded rod can be fixed to the formwork or bolted to the steel pipe fitting. The connection between the steel pipe fitting and the fastener of the upright in the scaffold is achieved through the connection. With reasonable size design, the pull-out force can be met with a pull-out force not less than the anti-slip force of the fastener. Moreover, the installation depth is small, which does not affect the use function of reinforced concrete and is easy to repair. Attached Figure Description

[0011] Figure 1 This is a cross-sectional schematic diagram of the present invention in use;

[0012] Figure 2 This is a schematic diagram of the threaded tapered rod structure of this utility model;

[0013] Figure 3 This is a schematic cross-sectional view of the template fixing and installation of this utility model;

[0014] Figure 4 This is a schematic diagram of the steel pipe fitting structure of this utility model.

[0015] In the diagram: 1. Threaded tapered rod; 2. Shear rod; 3. Steel pipe fitting; 4. Nut; 101. Tapered cylinder; 102. Threaded rod; 103. Pin hole; 301. Steel pipe; 302. Steel plate; 303. Bolt hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4This utility model provides a technical solution: a pull-out type pre-embedded wall tie, including a threaded cone rod 1, a shear rod 2, a steel pipe fitting 3, and a nut 4. One end of the threaded cone rod 1 is a tapered column 101 with a gradually increasing diameter. The smaller diameter end of the tapered column 101 is fixed in the concrete, making it easy to pull the tapered column 101 out of the concrete after use. The other end is a screw rod 102 with a diameter smaller than the maximum diameter of the threaded cone rod 1. The screw rod 102 is provided to facilitate fixing the threaded cone rod 1 to the steel pipe fitting 3 by means of the nut 4. The smallest diameter end of the tapered column 101 is provided with a through pin hole 103, and a shear rod 2 of matching size passes through the pin hole 103. The shear rod 2 is installed in the pin hole 103, which can effectively prevent the threaded cone rod 1 from slipping or misaligning. The shear rod 2 transmits the shear force from the stressed part to other stable parts through its own strength.

[0018] In this example, the steel pipe fitting 3 is composed of a steel pipe 301 and a steel plate 302. The plane of the steel plate 302 is larger than the outer cross-section of the steel pipe 301, which makes it convenient to set bolt holes 303 on the plane of the steel plate 302. The steel plate 302 is fixed to one end of the steel pipe 301. At the same time, bolt holes 303 are opened on the steel plate 302 outside the outer cross-section of the steel pipe 301 so that the screw 102 can be fixed to the steel plate 302 through the nut 4. The threaded tapered rod 1 is connected to the steel pipe fitting 3.

[0019] In this example, the steel pipe 301 and the steel plate 302 are fixed by welding. Welding is a permanent connection of components by molten metal at high temperature, which makes the connection part perform well in terms of tensile, compressive and shear resistance, and avoids the risk of loosening under long-term vibration or impact.

[0020] In this example, the screw 102 can pass through the bolt hole 303, and the end of the screw 102 is threaded with a nut 4. The nut 4 is used to fix the screw 102 on the threaded tapered rod 1 to the steel pipe 3 through the bolt hole 303.

[0021] In this example, the tapered column 101 and shear bar 2 are embedded in the concrete. The embedded parts are poured simultaneously with the concrete, which avoids damage to the structure caused by post-drilling and reduces the risk of stress concentration.

[0022] In this example, the threaded tapered rod 1, shear rod 2, and nut 4 are made of steel. Steel has excellent tensile and compressive strength and can withstand large loads.

[0023] Working principle: When using it, the formwork at various points such as walls, columns, and beams (e.g., Figure 3 After installation at point b), the positions of the wall ties to be pre-embedded are located on the formwork according to the internal uprights of the external scaffolding. Drill holes are made on the formwork to match the threaded rods 102 on the threaded tapered rod 1. Figure 3As shown, the shear rod 2 is installed into the pin hole 103 on the threaded tapered rod 1, and the shear rod 2 and the pin hole 103 form a tight fit. Then, the screw 102 of the threaded tapered rod 1 is passed out from inside the template, and the threaded tapered rod 1 is fixed inside the template using the nut 4. The threaded tapered rod 1 is pre-fixed inside the template during pre-embedding, and its screw 102 is passed out through the matching drill hole on the template and fixed to the template using the nut 4.

[0024] Then, pour concrete into the formwork and reinforcing bars. After the concrete hardens, unscrew nut 4 and remove the formwork. Then, align the bolt hole 303 of the steel pipe fitting 3 with the threaded rod 102 and insert it, so that the steel plate 302 is flush with the concrete (as shown in the image). Figure 1 The steel pipe 301 of the steel pipe fitting 3 is then attached to the inner upright coupler of the scaffolding, and tightened with washers and nuts. This completes the connection.

[0025] During dismantling, remove the fastener and nut 4, then remove the steel pipe fitting 3, use the rod matching the screw 102 to fix the screw, and use hydraulic or bracket-type jacks and other tools to forcibly pull out the threaded cone rod 1. Then, repair the opening. This completes the entire work. The contents not described in detail in this manual are existing technologies known to those skilled in the art.

[0026] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pull-through pre-embedded wall element comprising a threaded taper (1), a shear rod (2), a steel pipe element (3) and a nut (4), characterized in that: One end of the threaded taper rod (1) is a tapering cylinder (101) with gradually increasing diameter, and the other end is a screw rod (102) with a diameter smaller than the maximum diameter of the threaded taper rod (1), the tapering cylinder (101) is provided with a through bolt hole (103) at the end with the smallest diameter, and a shear rod (2) with a size matching that of the bolt hole (103) is inserted through the bolt hole (103).

2. The snap-through pre-embedded wall tie according to claim 1, wherein: The steel pipe fitting (3) is composed of a steel pipe (301) and a steel plate (302), the steel plate (302) has a larger plane than the outer cross section of the steel pipe (301), and the steel plate (302) is fixed at one end of the steel pipe (301), and a bolt hole (303) is formed on the steel plate (302) outside the outer cross section of the steel pipe (301).

3. The snap-through pre-embedded wall tie according to claim 2, wherein: The steel pipe (301) and the steel plate (302) are fixed by welding.

4. The snap-through pre-embedded wall tie according to claim 3, wherein: The screw rod (102) can penetrate through the bolt hole (303), and the end of the screw rod (102) is threadedly connected with a nut (4).

5. The snap-through pre-embedded wall tie according to claim 4, wherein: The tapering cylinder (101) and the shear rod (2) are pre-buried in concrete.

6. The snap-through pre-embedded wall tie of claim 1, wherein: The threaded taper rod (1), the shear rod (2) and the nut (4) are made of steel.

Images