Prestressed anchorage device for bridge building construction
By using hollow mounts and conical placing seats in prestressed anchors for bridge construction, the sliding and compression mechanisms of the special-shaped clips and the first clips can be used to achieve double clamping of the steel strands, which solves the existing problem The problem of loose steel strands in the technology improves construction stability and beam body load bearing performance.
Patent Information
- Application Number
- CN202420963274.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-07
AI Technical Summary
When the double clips of existing prestressed anchors are loose, the steel strands are prone to loosen, which affects the construction effect of prestress and reduces the bearing performance of the beam body.
A prestressed anchor for bridge construction was designed, using hollow mounts and conical placing seats, with special-shaped clips and anchor plates inside, and steel strands are realized through the sliding and compression mechanism of special-shaped clips and the first clip. Double clamping ensures tension stability.
Effectively prevent the steel strands from loosening, improve the construction stability of prestressed and the bearing performance of the beam body, and extend the service life of the steel strands.
Smart Images
Figure CN222206037U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to a prestressed anchor for bridge construction. Background Art
[0002] Prestressed anchor is a kind of anchor, which is suitable for concrete prestressing in the process of engineering construction. It is often used in bridge construction. It is pre-installed and positioned, and then poured with concrete. It is buried at both ends of the concrete, that is, the two ends of the corrugated pipe. It is the end face set for the stabilizing effect of the jack during tensioning. Prestressed anchor is widely used in highway and bridge construction. It tightens the steel strands inside the concrete and generates prestress, which can avoid or delay problems such as cracking of concrete structures.
[0003] In the existing prestressed anchors, a single steel strand is generally locked and fixed near the anchor plate by a double clamp method. However, in this method, when the double clamp becomes loose, the steel strand will become loose, affecting the construction of the prestressed steel strand and reducing the bearing capacity of the beam. Based on this, a prestressed anchor for bridge construction is proposed to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a prestressed anchor for bridge construction, which effectively solves the deficiencies of the prior art.
[0005] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one side provides a prestressed anchor for bridge construction, including a hollow mounting seat, a conical placement seat is arranged on one side of the hollow mounting seat, and its outer shape is a conical structure, a plurality of special-shaped clips are arranged inside the conical placement seat, and they are grouped in pairs, four anchor plates are arranged inside the hollow mounting seat, and conical holes are opened in the middle of each of the four conical holes, two first clips placed oppositely are arranged inside each of the four conical holes, spacers are arranged on adjacent sides of the four anchor plates, and a first limiting groove is opened on the side away from the conical placement seat for the plurality of spacers and the four anchor plates, and a rectangular limiting ring is arranged inside each of the plurality of spacers.
[0006] Preferably, any of the above schemes is that a connecting plate is fixedly connected to the side of the hollow mounting seat away from the conical placing seat, and a second limiting groove is provided on the inner wall of the connecting plate. Four protruding blocks matching the second limiting groove are provided at the edge of the rectangular limiting ring. The connecting plate in this scheme can increase the contact area between the hollow mounting seat and the external beam body, and at the same time, a second limiting groove is provided on the inner wall of the connecting plate to facilitate limiting the installation of the rectangular limiting ring. At the same time, when the rectangular limiting ring is produced and processed, it can be directly installed inside the hollow mounting seat, and the rectangular limiting ring can be taken out by the protruding block to measure whether the rectangular limiting ring is qualified.
[0007] Preferably, any of the above schemes has three limiting tubes fixedly connected to both ends of one side of the connecting plate, and the outer walls of the six limiting tubes are sleeved and connected with spiral ribs. The limiting tubes in this scheme provide installation positions for the spiral ribs, and the six spiral ribs are symmetrically distributed, which can conveniently adjust the tension of the external steel strands to ensure the prestress and service life of the steel strands.
[0008] Preferably, any of the above schemes is that two adjacent special-shaped clips are combined into a cone and fit with the inside of the conical placement seat, and a gap is left between one end of the eight special-shaped clips close to the anchor plate and the anchor plate. By using this scheme, the special-shaped clips can slide a certain distance along the steel strand, so that the steel strand can be smoothly tensioned. At the same time, the inside of the special-shaped clip is provided with a threaded protrusion, which makes it easy to reduce the contact area with the steel strand. After the steel strand is tensioned and released, the steel strand can drive the special-shaped clip, so that the special-shaped clip and the first clip can doubly clamp the steel strand.
[0009] Preferably, in any of the above schemes, the outer wall of the rectangular limit ring is slidably connected to the inner wall of the hollow mounting seat. By using this scheme, it is convenient for the rectangular limit ring to limit one side of multiple spacers and four anchor plates. At the same time, due to manufacturing errors and tensioning requirements, it is convenient to adjust the relative distance between the four anchor plates, so that the external tensioning jack can perform tensioning construction on the steel strands separately.
[0010] The utility model has the following advantages:
[0011] The prestressed anchor for bridge construction is provided with a hollow mounting seat and a conical placement seat, and the two are fixedly connected and interconnected. At the same time, the interior of the conical placement seat is provided with special-shaped clips placed in pairs, and the interior of the hollow mounting seat is provided with four anchor plates, and the interiors of the four anchor plates are all provided with first clips placed in pairs. When in use, the steel strand is completely passed through two adjacent special-shaped clips and two adjacent first clips. When the steel strand is tensioned externally, the steel strand is pulled and slides relatively with the special-shaped clip and the first clip. When the tension is released, the special-shaped clip and the first clip are compressed by external force, and the steel strand is doubly clamped, thereby effectively solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the cutaway structure of the utility model as a whole;
[0014] Figure 3 This is a schematic diagram of the structure of the hollow mounting seat of the utility model;
[0015] Figure 4 It is a schematic diagram of the partial cutaway structure of the connection plate of the utility model;
[0016] Figure 5 This is a schematic diagram of the combined structure of the spacer and anchor plate of the utility model;
[0017] Figure 6 This is a schematic diagram of the rectangular limiting ring structure of the utility model;
[0018] Figure 7 This is a schematic diagram of the special-shaped clip structure of the utility model.
[0019] In the figure: 1-hollow mounting seat, 2-connecting plate, 3-spiral rib, 4-conical placement seat, 5-first clamp, 6-spacer, 7-conical hole, 8-anchor plate, 9-limiting tube, 10-rectangular limiting ring, 11-second limiting groove, 12-first limiting groove, 13-protruding block, 14-special-shaped clamp. DETAILED DESCRIPTION
[0020] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0021] like Figures 1 to 7 As shown, a prestressed anchor for bridge construction includes a hollow mounting seat 1, a conical placement seat 4 is arranged on one side of the hollow mounting seat 1, and its outer shape is a conical structure. A plurality of special-shaped clips 14 are arranged inside the conical placement seat 4, and they are grouped in pairs. Four anchor plates 8 are arranged inside the hollow mounting seat 1, and a conical hole 7 is opened in the middle thereof. Two first clips 5 placed oppositely are arranged inside the four conical holes 7. Spacers 6 are arranged on adjacent sides of the four anchor plates 8. A first limiting groove 12 is opened on the side away from the conical placement seat 4 by the plurality of spacers 6 and the four anchor plates 8, and a rectangular limiting ring 10 is arranged inside.
[0022] A connecting plate 2 is fixedly connected to the side of the hollow mounting seat 1 away from the conical placement seat 4. A second limiting groove 11 is provided on the inner wall of the connecting plate 2. Four raised blocks 13 matching the second limiting groove 11 are provided at the edge of the rectangular limiting ring 10. As an optional technical solution of the utility model, the connecting plate 2 can increase the contact area between the hollow mounting seat 1 and the external beam body. At the same time, a second limiting groove 11 is provided on the inner wall of the connecting plate 2, which is convenient for limiting the installation of the rectangular limiting ring 10. At the same time, when the rectangular limiting ring 10 is produced and processed, it can be directly installed inside the hollow mounting seat 1, and the rectangular limiting ring 10 can be taken out through the raised block 13 to measure whether the rectangular limiting ring 10 is qualified.
[0023] Three limit tubes 9 are fixedly connected to both ends of one side of the connecting plate 2, and the outer walls of the six limit tubes 9 are sleeved and connected with spiral ribs 3. As an optional technical solution of the utility model, the limit tubes 9 are convenient for providing an installation position for the spiral ribs 3. At the same time, the six spiral ribs 3 are symmetrically distributed, which can conveniently adjust the tension of the external steel strands to ensure the prestress and service life of the steel strands.
[0024] Two adjacent special-shaped clips 14 are combined into a cone and fit with the inside of the cone-shaped placement seat 4. A gap is left between the end of the eight special-shaped clips 14 close to the anchor plate 8 and the anchor plate 8. As an optional technical solution of the utility model, this makes it easy for the special-shaped clips 14 to slide along the steel strand for a certain distance, so that the steel strand can be smoothly tensioned. At the same time, a threaded protrusion is provided inside the special-shaped clip 14, which makes it easy to reduce the contact area with the steel strand. After the steel strand is tensioned and released, the steel strand can drive the special-shaped clip 14, so that the special-shaped clip 14 and the first clip 5 can double clamp the steel strand.
[0025] The outer wall of the rectangular limit ring 10 is slidably connected to the inner wall of the hollow mounting seat 1. As an optional technical solution of the present invention, this makes it easy for the rectangular limit ring 10 to limit one side of multiple spacers 6 and four anchor plates 8. At the same time, due to manufacturing errors and tensioning requirements, it is easy to adjust the relative distance between the four anchor plates 8, so that the external tensioning jack can perform tensioning construction on the steel strands separately.
[0026] To sum up, when the user uses it, a hollow mounting seat 1 and a conical placement seat 4 are set, and the two are fixedly connected and interconnected. At the same time, the interior of the conical placement seat 4 is provided with special-shaped clips 14 placed in pairs, and the interior of the hollow mounting seat 1 is provided with four anchor plates 8, and the interiors of the four anchor plates 8 are all provided with first clips 5 placed in pairs. When in use, the steel strand is completely passed through two adjacent special-shaped clips 14 and two adjacent first clips 5. When the steel strand is tensioned externally, the steel strand is pulled and slides relative to the special-shaped clip 14 and the first clip 5. When the tensioning is released, the special-shaped clip 14 and the first clip 5 are compressed by external force, and the steel strand is doubly clamped, thereby effectively solving the problems existing in the prior art.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A prestressed anchor for bridge construction, Features: The invention comprises a hollow mounting seat (1), wherein a conical placement seat (4) is arranged on one side of the hollow mounting seat (1), and the outer shape of the conical placement seat (4) is a conical structure; a plurality of special-shaped clips (14) are arranged inside the conical placement seat (4), and the clips are arranged in groups of two; four anchor plates (8) are arranged inside the hollow mounting seat (1), and a conical hole (7) is opened in the middle of the four anchor plates; two first clips (5) are arranged opposite to each other inside the four conical holes (7); spacers (6) are arranged on adjacent sides of the four anchor plates (8); a first limiting groove (12) is opened on the side away from the conical placement seat (4) of the plurality of spacers (6) and the four anchor plates (8), and a rectangular limiting ring (10) is arranged inside the first limiting groove (12).
2. A prestressed anchor for bridge construction according to claim 1, Features: A connecting plate (2) is fixedly connected to the side of the hollow mounting seat (1) away from the conical placement seat (4), a second limiting groove (11) is provided on the inner wall of the connecting plate (2), and four protruding blocks (13) matching with the second limiting groove (11) are provided at the edge of the rectangular limiting ring (10).
3. A prestressed anchor for bridge construction according to claim 2, Features: Three position limiting tubes (9) are fixedly connected to both ends of one side of the connection plate (2), and the outer walls of the six position limiting tubes (9) are sleeved and connected with spiral ribs (3).
4. A prestressed anchor for bridge construction according to claim 3, Features: Two adjacent special-shaped clips (14) are combined into a cone and fit into the interior of the cone-shaped placement seat (4). A gap is left between one end of the eight special-shaped clips (14) close to the anchor plate (8) and the anchor plate (8).
5. A prestressed anchor for bridge construction according to claim 4, Features: The outer wall of the rectangular limiting ring (10) is slidably connected to the inner wall of the hollow mounting seat (1).