A deviation rectifying device of a prestressed anchorage device

Abstract

This utility model relates to the field of anchor correction technology and proposes a correction device for prestressed anchors, including a jack, an inclined cylinder, and a rotating shaft. A positioning mold is provided at the port of the jack, and the inclined cylinder is provided on the side wall of the jack. A movable groove is provided on the inner wall of the inclined cylinder, and an anchor pad is movably connected to the inclined cylinder through the movable groove. A movable connecting block is provided at the end of the anchor pad near the inclined cylinder. A mounting base plate is provided on the inner wall of the movable groove. Dampers are evenly and movably connected to the bottom end of the movable connecting block, and one end of the damper is movably connected to the mounting base plate. Springs are installed on the outer wall of each damper. A locking block is provided at the end of the anchor pad away from the movable connecting block, and the anchor pad is locked to one end of the offset anchor body through the locking block. This solves the problem in the prior art that the correction mechanism is inconvenient for the anchor body to detach after correction, and that it is inconvenient to disassemble and install the wire rope.

Description

Technical Field

[0001] This utility model relates to the field of anchor correction technology, specifically to a correction device for a prestressed anchor. Background Technology

[0002] Prestressed technology, as an important construction technique in modern engineering structures, has been widely used in fields such as long-span bridges, high-rise buildings, and special structures. As engineering structures develop towards larger spans and higher strengths, the requirements for the precision of prestressed construction are constantly increasing, among which the accurate positioning of the anchor system has become a key link in ensuring the prestressing effect.

[0003] Patent specification CN 207347940 U discloses a prestressed anchorage correction device. It comprises an inclined cylinder with a slot at its flat end for mounting an offset anchorage. A circular hole, communicating with the slot, is formed on the inclined end of the cylinder for the passage of a steel strand. The inclined end contacts a jack supporting the inclined cylinder. The tail end of the jack is equipped with a positioning anchor connected to the steel strand for applying tension to the strand. This invention utilizes the inclined surface of the cylinder and the tensioning action of the jack to correct the offset position through eccentric tensioning. It is convenient to operate and low in cost. During the correction process, there is no damage to the offset anchorage or the steel strand, thus ensuring the quality of correction. A compression spring structure around the outer periphery of the circular hole facilitates the separation of the inclined cylinder from the offset anchorage, preventing the generated force from affecting the stability of the offset anchorage.

[0004] However, in implementing the relevant technology, the above-mentioned prestressed anchor correction device has the following problems: when the device is in use, after the correction is completed, the anchor body is easily broken due to the stress of the wire rope when it is separated from the correction mechanism. At the same time, the wire rope is inconvenient to disassemble and assemble. Therefore, we propose a prestressed anchor correction device. Utility Model Content

[0005] This utility model proposes a correction device for prestressed anchorages, which solves the problem in related technologies that the correction mechanism is not convenient for the anchor body to detach after the correction is completed, and it is inconvenient to disassemble and install the wire rope.

[0006] The technical solution of this utility model is as follows:

[0007] A prestressed anchorage correction device includes a jack, an inclined cylinder, and a rotating shaft. A positioning mold is provided at the port of the jack. The inclined cylinder is formed on the side wall of the jack, and a movable groove is provided on the inner wall of the inclined cylinder. An anchorage pad is movably connected to the inclined cylinder through the movable groove. A movable connecting block is provided at the end of the anchorage pad near the inclined cylinder. A mounting base plate is provided on the inner wall of the movable groove. Dampers are evenly and movably connected to the bottom end of the movable connecting block. One end of the damper is movably connected to the mounting base plate. Springs are installed on the outer wall of each damper. A locking block is provided at the end of the anchorage pad away from the movable connecting block. The anchorage pad is locked to one end of an offset anchor body through the locking block. A steel wire is connected to the port of the offset anchor body, and one end of the steel wire passes through the jack and the inclined cylinder and is movably connected to the positioning mold.

[0008] Preferably, the inner wall of the positioning mold is provided with a displacement groove, and a bidirectional threaded rod is movably installed on the inner wall of the displacement groove. One end of the bidirectional threaded rod extends through the displacement groove to the side wall of the positioning mold and is connected to a rotating shaft.

[0009] Preferably, multiple sets of sleeves are symmetrically and movably installed on the outer wall of the bidirectional threaded rod, and one end of each sleeve is provided with a threaded sleeve.

[0010] Preferably, the outer wall of the bidirectional threaded rod is provided with multiple sets of external threads in opposite directions, and the inner wall of the threaded sleeve is provided with internal threads that match the external threads.

[0011] Preferably, a limiting block is provided at the end of the jacket away from the threaded sleeve, and a limiting groove is provided on the inner wall of the jack. The jacket is movably installed inside the limiting groove through the limiting block.

[0012] Preferably, the cross-section of the limiting block is trapezoidal, and the limiting block and the limiting groove fit together.

[0013] Preferably, the bottom of the inclined cylinder is provided with a window that extends into the interior of the movable groove.

[0014] Preferably, there is a gap between the jackets, and a limiting ring is provided on the outer wall of the steel wire, the diameter of which is larger than the gap between the jackets.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] 1. In this utility model, the position of the offset anchor is corrected by eccentric tensioning through the inclined cylinder, anchor pad, and spring. Before installation, the offset of the anchor pad should be observed through the window at the bottom of the inclined cylinder to determine the offset direction of the offset anchor. During use, the jack is slowly started to control the tensioning speed of the steel wire. Then, the offset anchor is observed through the bottom window. When the offset anchor moves downward under force, the damper installed at the bottom of the movable connecting block causes the anchor pad at the bottom to move on the inner wall of the movable groove and compress the spring and the mounting base plate to correct the offset anchor. After the correction is completed, the jack is turned off and the pressure is slowly released by the elastic force generated by the deformation of the mounting base plate. At the same time, the locking block stops engaging with the port of the offset anchor, and the offset anchor separates from the locking block. In use, this structure can slowly release force after the correction is completed to avoid danger when the offset anchor comes off.

[0017] 2. In this utility model, the rotating shaft, bidirectional threaded rod, and limiting block are configured to rotate the bidirectional threaded rod. Since the outer wall of the bidirectional threaded rod is provided with multiple sets of external threads in opposite directions, and the inner wall of the threaded sleeve is provided with internal threads that match the external threads, the sleeve is subjected to force under the transmission of the bidirectional threaded rod. Then, the limiting effect of the limiting block and the limiting groove is used to make the sleeve extend outward at the same time. When the distance between the sleeves is greater than the diameter of the limiting ring, the steel wire can be taken out. This structure can provide a stable connection for the steel wire while facilitating disassembly. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the main structure of the device proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the window structure proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the main body of the device proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the locking block structure proposed in this utility model;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the positioning mold proposed in this utility model.

[0024] In the diagram: 1. Jack; 2. Positioning mold; 3. Inclined cylinder; 4. Offset anchor; 5. Rotating shaft; 6. Steel wire; 7. Limiting ring; 8. Movable groove; 9. Anchor pad; 10. Movable connecting block; 11. Damper; 12. Spring; 13. Mounting base plate; 14. Displacement groove; 15. Jacket; 16. Two-way threaded rod; 17. Threaded sleeve; 18. Limiting block; 19. Limiting groove; 20. Window; 21. Engaging block. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1: As Figures 1-5 As shown, this embodiment proposes a prestressed anchorage correction device, including a jack 1, an inclined cylinder 3, and a rotating shaft 5. A positioning mold 2 is provided at the end of the jack 1. The inclined cylinder 3 is provided on the side wall of the jack 1. A movable groove 8 is provided on the inner wall of the inclined cylinder 3. An anchorage pad 9 is movably connected to the inclined cylinder 3 through the movable groove 8. A movable connecting block 10 is provided at the end of the anchorage pad 9 near the inclined cylinder 3. A mounting base plate 13 is provided on the inner wall of the movable groove 8. A damper 11 is evenly and movably connected to the bottom end of the movable connecting block 10. One end of the damper 11 is movably connected to the mounting base plate 13. Springs 12 are installed on the outer wall of the damper 11. A locking block 21 is provided at the end of the anchor pad 9 away from the movable connecting block 10. The anchor pad 9 is locked to one end of the offset anchor body 4 through the locking block 21. A steel wire 6 is connected to the port of the offset anchor body 4. One end of the steel wire 6 passes through the jack 1 and the inclined cylinder 3 and is movably connected to the positioning mold 2.

[0027] In this embodiment, a window 20 is provided at the bottom of the inclined cylinder 3, and the window 20 extends into the interior of the movable groove 8.

[0028] Specific examples Figure 1 , Figure 3 and Figure 4As shown, when using this structure, the position of the offset anchor is corrected by eccentric tensioning. Before installation, the offset of the anchor pad 9 needs to be observed through the window 20 set at the bottom of the inclined cylinder 3 to determine the offset direction of the offset anchor 4. When in use, the jack 1 is slowly started to control the tensioning speed of the steel wire 6. Then, the offset anchor is observed through the bottom window. When the offset anchor 4 moves downward under force, the damper 11 is installed at the bottom of the movable connecting block 10, causing the anchor pad 9 at the bottom to move on the inner wall of the movable groove 8 and compress the spring 12 and the mounting base plate 13 to correct the offset anchor 4. After the correction is completed, the jack 1 is closed and the pressure is slowly released by the elastic force generated by the deformation of the mounting base plate 13. At the same time, the locking block 21 stops locking with the port of the offset anchor 4, so that the offset anchor 4 is separated from the locking block 21. When using this structure, after the correction is completed, the force can be slowly released to avoid danger when the offset anchor 4 is detached.

[0029] Example 2: The inner wall of the positioning mold 2 is provided with a displacement groove 14, and a bidirectional threaded rod 16 is movably installed on the inner wall of the displacement groove 14. One end of the bidirectional threaded rod 16 passes through the displacement groove 14 and extends to the side wall of the positioning mold 2, where it is connected to a rotating shaft 5.

[0030] In this embodiment, multiple sets of sleeves 15 are symmetrically and movably installed on the outer wall of the bidirectional threaded rod 16, and a threaded sleeve 17 is provided at one end of the sleeve 15.

[0031] In this embodiment, the outer wall of the bidirectional threaded rod 16 is provided with multiple sets of external threads in opposite directions, and the inner wall of the threaded sleeve 17 is provided with internal threads that match the external threads.

[0032] In this embodiment, a limiting block 18 is provided at the end of the jacket 15 away from the threaded sleeve 17, and a limiting groove 19 is provided on the inner wall of the jack 1. The jacket 15 is movably installed inside the limiting groove 19 through the limiting block 18.

[0033] In this embodiment, the cross-section of the limiting block 18 is trapezoidal, and the limiting block 18 and the limiting groove 19 fit together.

[0034] In this embodiment, there is a gap between the jackets 15, and a limiting ring 7 is provided on the outer wall of the steel wire 6. The diameter of the limiting ring 7 is larger than the gap between the jackets 15.

[0035] Specific examples Figure 1 , Figure 2 and Figure 5As shown, when using this structure, rotating the shaft 5 drives the bidirectional threaded rod 16 to rotate. Since the outer wall of the bidirectional threaded rod 16 is provided with multiple sets of external threads in opposite directions, and the inner wall of the threaded sleeve 17 is provided with internal threads that match the external threads, the sleeve 15 is subjected to force under the transmission of the bidirectional threaded rod 16. Then, by utilizing the limiting effect of the limiting block 18 and the limiting groove 19, the sleeve 15 extends outward simultaneously. When the distance between the sleeves 15 is greater than the diameter of the limiting ring 7, the steel wire 6 is removed. This structure can provide a stable connection for the steel wire 6 while facilitating disassembly.

[0036] Working principle: The position of the offset anchor is corrected by eccentric tensioning. Before installation, the offset of the anchor pad 9 needs to be observed through the window 20 set at the bottom of the inclined cylinder 3 to determine the offset direction of the offset anchor 4. During use, the jack 1 is slowly started to control the tensioning speed of the steel wire 6. Then, the offset anchor is observed through the bottom window. When the offset anchor 4 moves downward under force, the damper 11 is installed at the bottom of the movable connecting block 10, causing the anchor pad 9 at the bottom to move on the inner wall of the movable groove 8 and compress the spring 12 and the mounting base plate 13 to correct the offset anchor 4. After the correction is completed, the jack 1 is closed, and the pressure is slowly released by the elastic force generated by the deformation of the mounting base plate 13. At the same time, the locking block 21 stops engaging with the anchor. The port of the offset anchor 4 engages, separating the offset anchor 4 from the engaging block 21. Simultaneously, the rotating shaft 5 drives the bidirectional threaded rod 16 to rotate. Since the outer wall of the bidirectional threaded rod 16 is provided with multiple sets of external threads in opposite directions, and the inner wall of the threaded sleeve 17 is provided with internal threads that match the external threads, the clamp 15 is subjected to force under the transmission of the bidirectional threaded rod 16. Then, using the limiting effect of the limiting block 18 and the limiting groove 19, the clamp 15 extends outward simultaneously. When the distance between the clamps 15 is greater than the diameter of the limiting ring 7, the steel wire 6 is removed. When this device is in use, after the correction is completed, the force can be slowly released to avoid danger when the offset anchor 4 is disengaged. It can also provide a stable connection to the steel wire 6 while facilitating disassembly.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A prestressed anchorage correction device, comprising a jack (1), an inclined cylinder (3), and a rotating shaft (5), characterized in that: A positioning mold (2) is provided at the port of the jack (1). An inclined cylinder (3) is provided on the side wall of the jack (1). An movable groove (8) is provided on the inner wall of the inclined cylinder (3). An anchor plate (9) is movably connected to the inclined cylinder (3) through the movable groove (8). A movable connecting block (10) is provided at one end of the anchor plate (9) near the inclined cylinder (3). An installation base plate (13) is provided on the inner wall of the movable groove (8). A damper (1) is evenly movably connected to the bottom end of the movable connecting block (10). 1) One end of the damper (11) is movably connected to the mounting base plate (13). The outer wall of the damper (11) is equipped with springs (12). The anchor pad (9) is provided with a locking block (21) at the end away from the movable connecting block (10). The anchor pad (9) is locked to one end of the offset anchor body (4) through the locking block (21). The port position of the offset anchor body (4) is connected with a steel wire (6). One end of the steel wire (6) passes through the jack (1) and the inclined cylinder (3) and is movably connected to the positioning mold (2).

2. The correction device for a prestressed anchorage according to claim 1, characterized in that, The inner wall of the positioning mold (2) is provided with a displacement groove (14), and a bidirectional threaded rod (16) is movably installed on the inner wall of the displacement groove (14). One end of the bidirectional threaded rod (16) extends through the displacement groove (14) to the side wall of the positioning mold (2) and is connected to a rotating shaft (5).

3. The correction device for a prestressed anchorage according to claim 2, characterized in that, The outer wall of the bidirectional threaded rod (16) is symmetrically and movably equipped with multiple sets of sleeves (15), and one end of each sleeve (15) is provided with a threaded sleeve (17).

4. The correction device for a prestressed anchorage according to claim 3, characterized in that, The outer wall of the bidirectional threaded rod (16) is provided with multiple sets of external threads in opposite directions, and the inner wall of the threaded sleeve (17) is provided with internal threads that match the external threads.

5. The correction device for a prestressed anchorage according to claim 3, characterized in that, The end of the jacket (15) away from the threaded sleeve (17) is provided with a limiting block (18), and the inner wall of the jack (1) is provided with a limiting groove (19). The jacket (15) is movably installed inside the limiting groove (19) through the limiting block (18).

6. A prestressed anchorage correction device according to claim 5, characterized in that, The cross-section of the limiting block (18) is trapezoidal, and the limiting block (18) and the limiting groove (19) fit together.

7. A prestressed anchorage correction device according to claim 6, characterized in that, The bottom of the inclined cylinder (3) is provided with a window (20), which extends into the interior of the movable groove (8).

8. The correction device for a prestressed anchorage according to claim 5, characterized in that, There is a gap between the jackets (15), and a limiting ring (7) is provided on the outer wall of the steel wire (6). The diameter of the limiting ring (7) is greater than the gap between the jackets (15).

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