Large-tonnage adjustable prestress carbon fiber plate anchoring device

Abstract

The utility model discloses a large-tonnage adjustable prestress carbon fiber plate anchoring device, and relates to the technical field of road and bridge reinforcement. In order to solve the problem that in the prior art, a carbon fiber plate anchoring device is poor in self-adaptive capacity, the carbon fiber plate anchoring device comprises an anchoring plate, a connecting piece, a mounting base and an adjustable prestress applicator. The anchoring plate is adjusted according to the size of the carbon fiber plate, the anchoring plate is connected with the mounting base through the connecting piece, the adjustable prestress applicator is arranged in the mounting base, and the force application end of the adjustable prestress applicator penetrates through the connecting piece in a sliding mode to adjust the prestress of the carbon fiber plate. The adjustable prestress applicator controls rotation of the rotating assembly through stretching and retracting of the telescopic rod, so that the push rod is pushed or pulled to slide in the sliding groove of the connecting piece, the prestress of the carbon fiber plate is adjusted, and the pressing piece is detachably connected to one end of the push rod. The pre-stress of the carbon fiber plate can be adjusted in real time through the adjustable pre-stress applicator, and the practicability of the device is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge reinforcement technology, specifically to a large-tonnage adjustable prestressed carbon fiber plate anchoring device. Background Technology

[0002] Large-tonnage prestressed carbon fiber plate anchoring devices are specialized equipment used for structural reinforcement. They are primarily used to anchor prestressed carbon fiber plates to ensure effective prestress transfer, thereby improving the structure's load-bearing capacity and durability. This is particularly useful for reinforcing and repairing structures such as bridges and buildings. These devices typically consist of a fixed end and a tensioning end. By clamping the prestressed carbon fiber plate, they apply and maintain the prestress. The fixed end provides strong anchoring force, ensuring the carbon fiber plate does not slip or pull out under high stress, maintaining effective prestress transfer. The tensioning end ensures a uniform distribution of clamping force on the carbon fiber plate, preventing damage or failure due to stress concentration.

[0003] A search revealed Chinese patent CN219508397U, which discloses an anchoring device for prestressed carbon fiber plates. The carbon fiber plate is placed in the mounting groove of an anchoring plate and initially fixed with pressing nails. Then, the eccentric wheel is rotated by operating a handle. The rotation of the eccentric wheel pushes a sliding rod through a square hole (the hole is square, and the rod's cross-section is square to prevent rotation), thereby moving a limiting plate. Due to the action of a compression spring, the limiting plate applies tension to the carbon fiber plate during movement, achieving prestressing. When the eccentric wheel rotates to a certain angle, its self-locking plane engages with the limiting plate. At this point, the self-locking tensioning device is in a self-locking state, and the carbon fiber plate is firmly fixed to the anchoring device. In the self-locking state, even with a large external tensile force, the carbon fiber plate will not slip or loosen.

[0004] The existing technology has the following problems: when relying solely on the self-locking plane of the eccentric wheel to fit with the limiting plate to achieve self-locking, it is difficult to guarantee the adjustment of the magnitude of the prestress applied to the carbon fiber plate, resulting in poor self-adaptability of the device. At the same time, when encountering carbon fiber plates of different widths, the mounting groove may not be able to fit perfectly, causing the carbon fiber plate to shift or tilt during installation, affecting the accurate application of prestress and anchoring effect, and also resulting in poor self-adaptability of the device. Summary of the Invention

[0005] To address the aforementioned problems, this utility model aims to provide a large-tonnage adjustable prestressed carbon fiber plate anchoring device, with adjustable anchor plate width and prestress, and good self-adaptive capability.

[0006] The main idea of ​​the technical solution adopted by this utility model is to split the anchor plate into a first fixing plate and an L-shaped fixing plate. The width of the anchor plate can be adjusted by sliding the first fixing plate and the L-shaped fixing plate. Then, the telescopic rod provides power and controls the rotation of the rotating component. The push or pull push rod is used to slide, thereby controlling the magnitude of the prestress.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A large-tonnage adjustable prestressed carbon fiber plate anchoring device includes an anchoring plate for anchoring large-tonnage carbon fiber plates, and further includes:

[0009] The mounting base is installed on the anchor plate via a connector;

[0010] An adjustable prestressing applicator is located inside the mounting base, with its force-applying end sliding through the connector to adjust the magnitude of the prestress in the carbon fiber plate.

[0011] Furthermore: the anchoring plate includes a first fixing plate and an L-shaped fixing plate;

[0012] The first fixing plate is slidably connected to the L-shaped fixing plate, and the first fixing plate and the L-shaped fixing plate are sleeved on the outer side of the end of the large-tonnage carbon fiber plate.

[0013] Furthermore: the connector includes:

[0014] Mounting plate, which is detachably connected to anchor plate;

[0015] The U-shaped limit block is set on the mounting plate and embedded in the mounting base.

[0016] Furthermore: the adjustable prestress applicator includes:

[0017] The telescopic rod is rotatably installed in the mounting base.

[0018] A rotating assembly is disposed within the mounting base, with one end rotatably connected to the output end of the telescopic rod and the other end rotatably connected to a push rod;

[0019] The push rod slides through the U-shaped limiting block and is connected to a pressing element for applying prestress to the large-tonnage carbon fiber plate.

[0020] Furthermore: the rotating assembly includes:

[0021] The V-shaped rotating part has one end of the opening rotatably connected to the telescopic rod and the other end rotatably connected to the mounting base;

[0022] The rotating rod has one end rotatably connected to the corner of the V-shaped rotating component, and the other end rotatably connected to the push rod.

[0023] The beneficial effects of this utility model are:

[0024] 1. By controlling the rotation of the rotating component through the extension and retraction of the telescopic rod, the push rod is pushed or pulled to slide in the groove of the connector. This ensures that the carbon fiber plate is subjected to uniform and stable prestress during installation, thereby improving the anchoring effect, ensuring that the carbon fiber plate can effectively transfer prestress, and improving the load-bearing capacity and durability of the structure. At the same time, the telescopic rod enables real-time adjustment of the prestress of the carbon fiber plate, allowing the device to adapt to carbon fiber plates with different prestress requirements, thus improving the flexibility and practicality of the device.

[0025] 2. Through the sliding connection between the first fixing plate and the L-shaped fixing plate, and the cooperation between the slider and the groove, carbon fiber plates of different widths can be adapted, avoiding problems such as offset and tilting of the carbon fiber plates during installation, and ensuring the accurate application of prestress and the stability of the anchoring effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0027] Figure 1 This is a schematic diagram of a large-tonnage adjustable prestressed carbon fiber plate anchoring device according to the present invention.

[0028] Figure 2 This is a diagram illustrating the usage status of a large-tonnage adjustable prestressed carbon fiber plate anchoring device according to this utility model.

[0029] Figure 3 This is a schematic diagram of the anchor plate structure of this utility model;

[0030] Figure 4 This is a schematic diagram of the connector structure of this utility model;

[0031] Figure 5 This is a schematic diagram of the connector, mounting base, and adjustable prestress applicator of this utility model.

[0032] In the picture:

[0033] 1. Anchor plate; 101. First fixing plate; 102. L-shaped fixing plate; 103. First mounting groove; 104. First sliding groove; 105. Sliding block; 106. Threaded mounting hole; 107. Bolt; 108. Second mounting groove

[0034] 2. Connecting component; 201. U-shaped limiting block; 202. Mounting plate; 203. Mounting hole; 204. Second sliding groove;

[0035] 3. Mounting bracket;

[0036] 4. Adjustable prestressing applicator; 401. Telescopic rod; 402. V-shaped rotating component; 403. Rotating rod; 404. Push rod; 405. Pressing component. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] See Figures 1-5 This application discloses a large-tonnage adjustable prestressed carbon fiber plate anchoring device, including an anchoring plate 1, a connector 2, a mounting base 3, and an adjustable prestressing applicator 4 for anchoring large-tonnage carbon fiber plates. The anchoring plate 1 is connected to the mounting base 3 through the connector 2. The adjustable prestressing applicator 4 is provided in the mounting base 3, and the force-applying end of the adjustable prestressing applicator 4 slides through the connector 2 to realize the adjustment of the magnitude of the prestress of the carbon fiber plate.

[0040] Specifically, the anchor plate 1 includes a first fixing plate 101 and an L-shaped fixing plate 102. The first fixing plate 101 and the L-shaped fixing plate 102 form a first mounting groove 103 that restricts the position of the carbon fiber plate. The first mounting groove 103 limits the outer side of the end of the large-tonnage carbon fiber plate. The first fixing plate 101 and the L-shaped fixing plate 102 are slidably connected to accommodate large-tonnage carbon fiber plates of different sizes. In this embodiment, a first sliding groove 104 is provided at one end of the first fixing plate 101, and a slider 105 is provided at the corresponding position of the L-shaped fixing plate 102. The first sliding groove 104 and the slider 105 are rectangular. By sliding the first sliding groove 104 and the slider 105, the L-shaped fixing plate 102 can slide within the first fixing plate 101, making the anchor plate 1 suitable for carbon fiber plates of different sizes. Multiple threaded mounting holes 106 are evenly provided on the first fixing plate 101 and the L-shaped fixing plate 102. The threaded mounting holes 106 cooperate with the bolts 107 to firmly fix the first fixing plate 101 and the L-shaped fixing plate 102 to the bottom of the bridge component and prevent the anchor plate 1 from sliding. At the same time, a second mounting groove 108 is provided on the end of the first fixing plate 101 and the L-shaped fixing plate 102 away from the first sliding groove 104 and corresponding to the slider 105. The second mounting groove 108 is also provided with threaded mounting holes 106, and the connecting piece 2 is connected by bolts 107.

[0041] It is worth noting that the connector 2 is convex and includes a U-shaped limiting block 201 and a mounting plate 202. The bottom of the U-shaped limiting block 201 is fixedly connected to the middle of the mounting plate 202. A second sliding groove 204 is provided on the U-shaped limiting block 201. The second sliding groove 204 provides a sliding track for the adjustable prestressing applicator 4. The adjustable prestressing applicator 4 can slide in the second sliding groove 204. Multiple mounting holes 203 are evenly provided at both ends of the mounting plate 202. The mounting holes 203 are the same size as the threaded mounting holes 106 opened in the second mounting groove 108. The connector 2 can be connected to the anchor plate 1 by bolts 107.

[0042] It should be added that the mounting base 3 is U-shaped and is used to accommodate the main body of the adjustable prestressing applicator 4, providing conditions for the installation of the adjustable prestressing applicator 4. The mounting base 3 is fixedly connected to the connector 2, respectively providing mounting and sliding tracks for the adjustable prestressing applicator 4.

[0043] The prominent adjustable prestressing applicator 4 includes a telescopic rod 401, a rotating assembly, and a push rod 404. One end of the telescopic rod 401 is rotatably connected to the mounting base 3, and the other end is rotatably connected to the rotating assembly. The other end of the rotating assembly is rotatably connected to the push rod 404. The push rod 404 slides in the second slide groove 204. By extending and retracting the telescopic rod 401, the rotating assembly is controlled to rotate, thereby pushing or pulling the push rod 404 to retract in the second slide groove 204, thus achieving adjustment of the prestress of the carbon fiber plate.

[0044] Furthermore, the rotating assembly includes a V-shaped rotating member 402 and a rotating rod 403. One end of the V-shaped rotating member 402 is rotatably connected to the telescopic rod 401 at its opening, and the other end is rotatably connected to the mounting base 3. The middle corner of the V-shaped rotating member 402 is rotatably connected to one end of the rotating rod 403, and the other end of the rotating rod 403 is rotatably connected to the push rod 404. The push rod 404 slides within the second sliding groove 204. By controlling the extension and retraction of the telescopic rod 401, the rotation angle of the rotating assembly can be precisely controlled, thereby precisely controlling the sliding distance and speed of the push rod 404. This precise control allows the device to apply different amounts of prestress to the carbon fiber plate according to different engineering requirements. Specifically, when the telescopic rod 401 extends or retracts, the force it generates is transmitted to the push rod 404 through the rotating assembly. By rotating, the rotating assembly converts the linear motion of the telescopic rod 401 into the linear motion (sliding) of the push rod 404, thereby realizing the application and adjustment of prestress on the carbon fiber plate.

[0045] Furthermore, the pressing component 405 is detachably connected to one end of the push rod 404. In this embodiment, a threaded connection is used to replace pressing components 405 of different sizes and shapes, further improving the adaptability of the carbon fiber plate anchoring device. The pressing surface of the pressing component 405 is provided with an anti-slip structure, which can effectively increase the friction and prevent relative movement between the carbon fiber plate and the anti-slip structure.

[0046] When the adjustable prestress applicator 4 is in use, the telescopic rod 401 extends, pushing the V-shaped rotating part 402 to rotate. Since the V-shaped rotating part 402 is rotatably connected to the mounting base 3, the V-shaped rotating part 402 will rotate around the end rotatably connected to the mounting base 3. The rotation of the V-shaped rotating part 402 drives the rotating rod 403 to rotate, and the rotation of the rotating rod 403 will also drive the push rod 404 to move. Because the push rod 404 slides in the second slide groove 204, the push rod 404 makes a linear motion. The sliding of the push rod 404 drives the pressing part 405 to move linearly, thereby applying prestress to the carbon fiber plate.

[0047] One usage process of this embodiment is as follows:

[0048] 1. Carbon fiber plate fixing

[0049] First, gently adhere the carbon fiber plate to the bottom of the bridge component. Then, install anchor plates 1 at both ends of the carbon fiber plate. When in use, adjust the sliding position of the L-shaped fixing plate in the anchor plate 1 so that the first mounting groove 103 formed by the first fixing plate 101 and the L-shaped fixing plate 102 is in contact with the carbon fiber plate, restricting the position of the carbon fiber plate. Then, use bolts 107 to firmly fix the first fixing plate 101 and the L-shaped fixing plate 102 to the bottom of the bridge component to prevent slippage.

[0050] 2. Assemble the anchoring system

[0051] Select appropriate mounting holes 203 at both ends of the connector 2 according to the width of the carbon fiber plate, insert bolts 107 into the mounting holes 203 and threaded mounting holes 106, and tighten them to fix them. In this way, the connector 2 is installed on the second mounting groove 108 of the anchor plate 1 by bolts 107. The mounting seat 3 is fixed above the connector 2 to complete the anchor frame construction and ensure a stable connection.

[0052] 3. Apply prestress

[0053] When the telescopic rod 401 is activated, it extends and pushes the V-shaped rotating component 402 to rotate. The V-shaped rotating component 402 rotates around the rotating connection end with the mounting base 3. The rotation of the V-shaped rotating component 402 drives the rotating rod 403 to rotate, and the rotation of the rotating rod 403 drives the push rod 404 to move. Due to the limiting effect of the second sliding groove 204 on the push rod 404, the push rod 404 moves in a straight line. The sliding of the push rod 404 drives the pressing component 405 to move in a straight line, thereby applying prestress to the carbon fiber plate.

[0054] Specific use cases:

[0055] Due to long-term vehicle loads and environmental erosion, the main beam of a certain cross-river bridge has developed obvious cracks and stiffness degradation. It needs to be reinforced by bonding large-tonnage prestressed carbon fiber plates to restore the structural load-bearing capacity and extend its service life.

[0056] Based on the distribution of cracks in the main beam and structural inspection data, the bonding position and length of the carbon fiber plate are determined. The selected carbon fiber plate is gently bonded to the bottom of the bridge component. After adjusting the sliding position of the L-shaped fixing plate in the anchor plate 1 to match the width of the carbon fiber plate, it is fixed with bolts 107. Suitable mounting holes 203 are selected at both ends of the connector 2. The bolts 107 are inserted into the mounting holes 203 and the threaded mounting holes 106 and then tightened. The telescopic rod 401 is activated, and the extension of the telescopic rod 401 is controlled according to actual needs to apply prestress to the carbon fiber plate.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A large-tonnage adjustable prestressed carbon fiber plate anchoring device, comprising an anchoring plate (1) for anchoring large-tonnage carbon fiber plates, characterized in that, Also includes: The mounting base (3) is mounted on the anchor plate (1) via the connector (2); An adjustable prestressing applicator (4) is located inside the mounting base (3), with the force-applying end sliding through the connector (2) to achieve adjustment of the magnitude of the prestress in the carbon fiber plate.

2. The large-tonnage adjustable prestressed carbon fiber plate anchoring device according to claim 1, characterized in that: The anchor plate (1) includes a first fixing plate (101) and an L-shaped fixing plate (102); The first fixing plate (101) is slidably connected to the L-shaped fixing plate (102), and the first fixing plate (101) and the L-shaped fixing plate (102) are sleeved on the outer side of the end of the large-tonnage carbon fiber plate.

3. The large-tonnage adjustable prestressed carbon fiber plate anchoring device according to claim 1, characterized in that: The connector (2) includes: Mounting plate (202) is detachably connected to anchor plate (1); The U-shaped limiting block (201) is set on the mounting plate (202) and embedded in the mounting base (3).

4. The large-tonnage adjustable prestressed carbon fiber plate anchoring device according to claim 3, characterized in that: The adjustable prestressing applicator (4) includes: The telescopic rod (401) is rotatably installed in the mounting base (3); The rotating component is located in the mounting base (3), with one end rotatably connected to the output end of the telescopic rod (401) and the other end rotatably connected to the push rod (404). A push rod (404) slides through the U-shaped limiting block (201) and is connected to a pressing member (405) for applying prestress to a large-tonnage carbon fiber plate.

5. The large-tonnage adjustable prestressed carbon fiber plate anchoring device according to claim 4, characterized in that: The rotating assembly includes: The V-shaped rotating part (402) has one end of its opening rotatably connected to the telescopic rod (401) and the other end rotatably connected to the mounting base (3); Rotary rod (403), one end of which is rotatably connected to the middle corner of V-shaped rotating part (402), and the other end is rotatably connected to push rod (404).

Images