A quick-installation prestressed anchor for concrete buildings

Abstract

This utility model discloses a quick-installation prestressed anchor for concrete structures, belonging to the technical field of prestressed anchors. It includes an anchor plate, with a bundled plate slidably connected to the inner wall of the anchor plate. Four steel strand bodies are slidably connected to the inner wall of the bundled plate, and a fixed anchor plate is slidably connected to the outer surfaces of the four steel strand bodies. A fixing plate is provided on the outer side of the fixed anchor plate. This quick-installation prestressed anchor for concrete structures, by setting up the bundled plate, allows the bundled plate slidably connected to the inner wall of the anchor plate to pre-position the four sets of steel strand bodies. Through the guiding effect of the bundled plate, the difficulty in controlling the front end of the long steel strands is avoided. This creates an overall guiding structure when the fixed anchor plate is inserted, eliminating the need for workers to insert the steel strands one by one, significantly shortening the alignment time between the steel strands and the anchor plate. Simultaneously, the fixing plate can fix multiple conical clips, facilitating the simultaneous insertion of multiple conical clips into the fixed anchor plate for fixation.

Description

Technical Field

[0001] This utility model belongs to the field of prestressed anchor technology, and in particular relates to a quick-installation prestressed anchor for concrete buildings. Background Technology

[0002] Prestressed anchorages are an important type of equipment used in prestressed concrete structures. Their main function is to transfer the tensile force of the prestressed steel bars to the concrete, thereby ensuring the stability and durability of the structure under stress. Prestressed anchorages typically consist of anchor plates, anchor bars, anchor rings, and fasteners, and are used to fix and transfer the prestress of the steel bars.

[0003] The existing utility model with authorization announcement number CN215631080U discloses a fixed-end anchor for prestressed concrete in buildings, including an anchor body, a fixed anchor plate, a corrugated pipe, a restraint ring, and a sealing cover. A limiting plate is fixed on the outer wall of the anchor body. A circular through hole is provided on the right side wall of the fixed anchor plate. A limiting groove is provided on the arc-shaped wall in the middle of the circular through hole. A through hole serving as a slot is provided on the right side wall of the limiting groove. When the anchor body is inserted into the circular through hole, the limiting plate is inserted into the slot. The corrugated pipe is located on the left side of the fixed anchor plate and covers the steel strand.

[0004] Using the above technical solution, the spiral reinforcement is first placed at the opening, then the constraint ring and corrugated pipe are fitted over the steel strand. The steel strand is then passed through the circular through hole and the mounting hole in sequence. The anchor body is inserted into the circular through hole, the limiting plate is inserted into the slot, and the fixed anchor plate is rotated 90 degrees, inserting the limiting plate into the limiting groove, thus fixing the fixed anchor plate to the anchor body. The fixed anchor plate is then fixed to the building. This utility model is convenient for use on inclined buildings. However, during installation, the above technical solution requires manual installation of each component, greatly increasing installation time and reducing efficiency. For example, because the steel strand is relatively long and the front end is difficult to control, the steel strands must be inserted one by one into the anchor plate when inserting the anchor plate. Utility Model Content

[0005] The purpose of this utility model is to solve the problem of low installation efficiency in the existing technology, and to propose a quick-installation prestressed anchor for concrete buildings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quick-installation prestressed anchor for concrete structures includes an anchor plate. A bundled plate is slidably connected to the inner wall of the anchor plate. Four steel strand bodies are slidably connected to the inner wall of the bundled plate. A fixed anchor plate is slidably connected to the outer surfaces of the four steel strand bodies. A fixed plate is provided on the outer side of the fixed anchor plate. Four sets of conical clips are provided inside the fixed plate. A positioning post is fixedly connected to the outer surface of each conical clip. The outer surface of each positioning post is slidably connected to the inner wall of the fixed plate. Four sets of magnet blocks are fixedly connected to the inner wall of the fixed plate. The side of each magnet block near the positioning post is in contact with the side of the positioning post away from the conical clip.

[0008] Preferably, a corrugated pipe is provided on the outer side of the anchor plate, and a connector is fixedly connected to one end of the corrugated pipe near the anchor plate.

[0009] Preferably, a reinforcing ring is fixedly connected to the back of the connector, and the inner wall of the reinforcing ring is fixedly connected to the outer surface of the bellows.

[0010] Preferably, the inner wall of the connector is threaded with a connecting conduit, and the front of the connecting conduit is fixedly connected to the back of the anchor plate.

[0011] Preferably, the outer surface of the connecting conduit is covered with PTFE tape, and the outer surface of the PTFE tape is in contact with the inner wall of the connector.

[0012] Preferably, the outer side of the anchor plate is provided with a spiral reinforcement, and one end of the spiral reinforcement near the anchor plate is fixedly connected to the back of the anchor plate.

[0013] Preferably, the upper surface of the anchor plate has two grouting holes, and the inner wall of each grouting hole is threaded with a sealing plug.

[0014] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0015] By setting up a cluster plate, the cluster plate, which is slidably connected to the inner wall of the anchor plate, can pre-position the four sets of steel strand bodies. Through the guiding effect of the cluster plate, the situation where the front end of the steel strand is difficult to control due to its long length is avoided. This creates an overall guiding structure when the anchor plate is inserted, eliminating the need for workers to insert the steel strands one by one, significantly shortening the alignment time between the steel strands and the anchor plate. Simultaneously, the fixing plate can fix multiple conical clips, facilitating the simultaneous insertion of multiple conical clips into the anchor plate for fixation. The magnet block and positioning post ensure a stable state when the conical clips are not inserted, preventing them from falling off. When inserted into the conical hole of the anchor plate, the conical hole gradually squeezes the conical clamping piece due to the slope, firmly clamping it onto the surface of the steel strand. Furthermore, the design of the conical hole and the slope of the conical clamping piece ensures that the clamping piece is securely fixed after entering the hole, preventing further outward movement of the anchor plate. As the anchor plate moves outward, it further squeezes the conical clamping piece, increasing the friction between the clamping piece and the steel strand surface, thus preventing further outward movement. This allows for rapid installation, reducing installation time and improving efficiency. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a quick-installation prestressed anchor for concrete buildings according to the present invention;

[0017] Figure 2 This is a three-dimensional cross-sectional structural diagram of the connector of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the fixed anchor plate of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the grouting hole of this utility model.

[0020] In the diagram: 1. Anchor plate; 2. Steel strand body; 3. Fixed anchor plate; 4. Corrugated pipe; 5. Connector; 6. Reinforcing ring; 7. Spiral reinforcement; 8. Teflon tape; 9. Connecting guide pipe; 10. Sealing plug; 11. Bundling plate; 12. Fixing plate; 13. Conical clamp; 14. Positioning post; 15. Magnet block; 16. Grouting hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 In one embodiment of this utility model, a quick-installation prestressed anchor for concrete buildings is provided;

[0023] It includes an anchor plate 1, a bundled plate 11 is slidably connected to the inner wall of the anchor plate 1, four steel strand bodies 2 are slidably connected to the inner wall of the bundled plate 11, and a corrugated pipe 4 is provided on the outer side of the anchor plate 1. A connector 5 is fixedly connected to one end of the corrugated pipe 4 near the anchor plate 1.

[0024] The corrugated pipe 4 provided in this embodiment can effectively prevent the external environment from corroding the internal steel strand body 2. The connector 5 is tightly connected to the corrugated pipe 4 through welding process to ensure the sealing and structural strength of the connection, so that the corrugated pipe 4 can be stably installed on the outside of the anchor plate 1, providing a reliable protective channel for the steel strand body 2.

[0025] Furthermore, the outer surfaces of the four steel strand bodies 2 are slidably connected to fixed anchor plates 3, and the back of the connector 5 is fixedly connected to a reinforcing ring 6. The inner wall of the reinforcing ring 6 is fixedly connected to the outer surface of the corrugated pipe 4. The reinforcing ring 6 is cast from high-strength metal material, and its inner wall is fixedly connected to the outer surface of the corrugated pipe 4 by annular welding. The reinforcing ring 6 can enhance the structural strength of the connection between the connector 5 and the corrugated pipe 4. When the prestressed anchor is subjected to large pressure and tension, it can effectively prevent deformation or loosening of the connection, thus ensuring the stability and safety of the entire prestressed anchor system.

[0026] In one embodiment of this application, a fixing plate 12 is provided on the outer side of the fixed anchor plate 3, and four sets of conical clips 13 are provided inside the fixing plate 12. The inner wall of the connector 5 is threaded with a connecting conduit 9. The front of the connecting conduit 9 is fixedly connected to the back of the anchor plate 1. The inner wall of the connector 5 is provided with internal threads, and it is matched with the connecting conduit 9 by means of threaded connection. The connecting conduit 9 is made of high-strength seamless steel pipe, and its connection part with the anchor plate 1 is precision machined and welded to ensure that the force can be stably transmitted to the anchor plate 1 during the prestress transmission process, while ensuring the unobstructed internal channel, which facilitates subsequent grouting and other operations.

[0027] Furthermore, each conical clip 13 has a positioning post 14 fixedly connected to its outer surface. The outer surface of each positioning post 14 is slidably connected to the inner wall of the fixing plate 12. The outer surface of the connecting conduit 9 is covered with PTFE tape 8. The outer surface of the PTFE tape 8 is in contact with the inner wall of the connector 5. The PTFE tape 8 has good sealing performance and flexibility. Its outer surface is tightly fitted to the inner wall of the connector 5. When the connecting conduit 9 and the connector 5 are threaded together, the PTFE tape 8 can fill the tiny gaps between the threads to form an effective sealing structure, preventing external moisture and impurities from entering the prestressed anchor. At the same time, it enhances the tightness of the threaded connection and avoids loosening during use.

[0028] Furthermore, in this embodiment of the present invention, four sets of magnet blocks 15 are fixedly connected to the inner wall of the fixing plate 12, and a spiral rib 7 is provided on the outer side of the anchor plate 1. The end of the spiral rib 7 near the anchor plate 1 is fixedly connected to the back of the anchor plate 1. The spiral rib 7 is made of high-strength steel bars, and its end near the anchor plate 1 is fixedly connected to the back of the anchor plate 1 by welding. The spiral rib 7 can effectively constrain the deformation of the concrete during the concrete pouring process, improve the local compressive strength and crack resistance of the concrete around the anchor plate 1, enable the prestressed anchor to work better with the concrete, and enhance the stability of the entire concrete building structure.

[0029] In one implementation, the side of each magnet block 15 near the positioning post 14 is in contact with the side of the positioning post 14 away from the conical clamp 13. Two grouting holes 16 are opened on the upper surface of the anchor plate 1. Each grouting hole 16 has a sealing plug 10 threadedly connected to its inner wall. The inner wall of the grouting hole 16 is provided with internal threads, and the sealing plug 10 is installed by means of threaded connection. The grouting hole 16 is used to inject cement grout and other filling materials into the anchor after the prestressing tension is completed, so as to enhance the bonding force between the anchor and the steel strand body 2 and improve the anchoring effect of the anchor. The sealing plug 10 is made of rubber material, which has good sealing performance and corrosion resistance. After the grouting is completed, it can tightly seal the grouting hole 16 to prevent moisture and impurities from entering the interior of the anchor and ensure the long-term stability of the anchor.

[0030] During use, the workers connect and fix the corrugated pipe 4, anchor plate 1, connector 5 and connecting conduit 9, and wrap a certain amount of PTFE tape 8 around the connecting conduit 9 to prevent leakage. Then, the anchor plate 1 and the corrugated pipe 4 behind it are placed on the concrete building support and fixed. Then, wait for the building support to pour concrete and wait for the concrete to solidify and dry. After solidification, the prestressed anchor can be installed. The bundle plate 11 is inserted into the anchor plate 1. Then, the steel strand body 2 is inserted into the anchor plate 1 and the corrugated pipe 4 through the through hole on the bundle plate 11. Then, the bundle plate 11 is pulled out to the edge of the steel strand body 2. This can make the front end of the steel strand body 2 no longer messy, so that the fixed anchor plate 3 forms an integral guiding structure when it is inserted. It eliminates the need for workers to insert the steel strands one by one, which greatly shortens the alignment time between the steel strand and the anchor plate.

[0031] Then, the fixing plate 12 is inserted on the outside of the steel strand body 2, and the fixing plate 12, the fixing anchor plate 3 and the bundle plate 11 are pushed inward until the bundle plate 11 enters the anchor plate 1. The fixing plate 12 can fix multiple conical clips 13 at the same time, which makes it convenient to insert multiple conical clips 13 into the fixing anchor plate 3 for fixation at the same time. The magnet block 15 and the positioning post 14 can ensure a stable state when the conical clips 13 are not inserted, and avoid the situation of falling off. When the conical clips 13 are inserted into the conical hole of the fixing anchor plate 3, due to the slope, the conical hole of the fixing anchor plate 3 will gradually squeeze the conical clips 13, so that the conical clips 13 are firmly clamped on the surface of the steel strand body 2. And due to the design of the conical hole of the fixing anchor plate 3 and the slope of the conical clips 13, the conical clips 13 can be firmly fixed after entering the conical hole of the fixing anchor plate 3, so that the fixing anchor plate 3 can no longer move outward.

[0032] In addition, as the fixed anchor plate 3 moves outward, it further compresses the conical clamp 13, increasing the friction between the conical clamp 13 and the surface of the steel strand. This prevents the fixed anchor plate 3 from moving outward, thus enabling the installation work to be completed quickly, reducing installation time and improving installation efficiency. Finally, the equipment is fitted onto the steel strand body 2 for stress adjustment, and grouting is performed through the grouting hole 16 for fixation. During grouting, a sealing gasket can be fitted on the surface of the fixed anchor plate 3 to increase sealing.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick-installation prestressed anchor for concrete structures, characterized in that, include: An anchor plate (1) is slidably connected to the inner wall of the anchor plate (1), and four steel strand bodies (2) are slidably connected to the inner wall of the bundled plate (11). The outer surfaces of the four steel strand bodies (2) are slidably connected to a fixed anchor plate (3). The fixing plate (12) is set on the outside of the fixing anchor plate (3). The fixing plate (12) is provided with four sets of conical clips (13). The outer surface of each conical clip (13) is fixedly connected to a positioning post (14). The outer surface of each positioning post (14) is slidably connected to the inner wall of the fixing plate (12). The inner wall of the fixing plate (12) is fixedly connected with four sets of magnet blocks (15). The side of each magnet block (15) near the positioning post (14) is in contact with the side of the positioning post (14) away from the conical clip (13).

2. The quick-installation prestressed anchorage for concrete structures according to claim 1, characterized in that: A corrugated pipe (4) is provided on the outside of the anchor plate (1), and a connector (5) is fixedly connected to one end of the corrugated pipe (4) near the anchor plate (1).

3. A quick-installation prestressed anchorage for concrete structures according to claim 2, characterized in that: A reinforcing ring (6) is fixedly connected to the back of the connector (5); The inner wall of the reinforcing ring (6) is fixedly connected to the outer surface of the bellows (4).

4. A quick-installation prestressed anchorage for concrete structures according to claim 2, characterized in that: The inner wall of the connector (5) is threaded with a connecting conduit (9). The front of the connecting conduit (9) is fixedly connected to the back of the anchor plate (1).

5. A quick-installation prestressed anchorage for concrete structures according to claim 4, characterized in that: The outer surface of the connecting conduit (9) is covered with a raw material tape (8); The outer surface of the raw material tape (8) is in contact with the inner wall of the connector (5).

6. A quick-installation prestressed anchorage for concrete structures according to claim 1, characterized in that: The outer side of the anchor plate (1) is provided with spiral reinforcement (7); The spiral reinforcement (7) is fixedly connected to the back of the anchor plate (1) at one end near the anchor plate (1).

7. A quick-installation prestressed anchorage for concrete structures according to claim 1, characterized in that: The upper surface of the anchor plate (1) has two grouting holes (16), and the inner wall of each grouting hole (16) is threaded with a sealing plug (10).

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