A road and bridge crack reinforcement structure
By designing a support structure and guide rollers, the problem of carbon fiber cloth falling off during bridge crack reinforcement was solved, achieving smooth laying and tight bonding of the carbon fiber cloth, thus improving construction efficiency and the load-bearing capacity of the bridge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FOURTH ENG CO LTD OF CCCC FIRST HIGHWAY ENG
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-03
AI Technical Summary
During the reinforcement of bridge cracks, carbon fiber cloth tends to fall downwards during bonding, resulting in high physical exertion for personnel and reduced work efficiency.
A structure including a base, a bracket, a bidirectional threaded rod, a guide roller, and a pressure roller was designed. The spacing of the support frame is adjusted by rotating the bidirectional threaded rod, the guide assembly and the pressure roller are used to ensure that the carbon fiber cloth is laid flat, and the pressure distribution is adjusted by telescopic pressure rod to achieve tight bonding of the carbon fiber cloth.
It improves the laying accuracy and construction efficiency of carbon fiber cloth, enhances the load-bearing capacity and durability of bridge structures, reduces offset and wrinkles during construction, and improves the quality of reinforcement.
Smart Images
Figure CN224451427U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of road and bridge crack reinforcement structure, and in particular to a road and bridge crack reinforcement structure. Background Technology
[0002] Bridge cracks are a serious type of damage to bridge structures, typically caused by factors such as overloading, earthquakes, foundation settlement, or inadequate concrete reinforcement design. They are characterized by cracks extending deep into the structure, potentially penetrating part of the cross-section, with a width usually between 0.2 and 0.5 mm. These cracks weaken the effective cross-sectional area of the structural members, reducing the structural load-bearing capacity. If left unrepaired for a long time, environmental erosion (such as rainwater infiltration and freeze-thaw cycles) can lead to steel reinforcement corrosion, further exacerbating structural deterioration. Repairing deep cracks requires pressure grouting (injecting epoxy resin or cement-based grout) or groove-filling techniques, combined with structural reinforcement measures (such as bonding carbon fiber cloth or adding external prestressing) to restore overall safety.
[0003] Bridge beams are a common method for reinforcing bridge decks. During the process of reinforcing cracks in a bridge, after epoxy resin is injected, the bottom of the bridge is ground. After grinding, carbon fiber cloth is bonded. Since the bonding is done at the bottom of the bridge, the carbon fiber cloth will fall downwards during the bonding process, and personnel are needed to support it at the bottom. This consumes a lot of physical strength and greatly reduces work efficiency. Utility Model Content
[0004] Therefore, it is necessary to provide a road and bridge crack reinforcement structure to address the problem that carbon fiber cloth will fall downwards during the bonding process, requiring personnel to support it at the bottom, which consumes a lot of physical strength and greatly reduces work efficiency.
[0005] A road and bridge crack reinforcement structure includes: a base, two supports slidably connected above the base, a bidirectional threaded rod movably inserted inside the two supports, two support frames threaded on the surface of the bidirectional threaded rod, and guide rollers and pressure rollers movably inserted on the two support frames, the guide rollers and pressure rollers rotating on the same horizontal plane;
[0006] A guide assembly is disposed on both sides of the support frame and is movable at both ends of the guide roller;
[0007] Carbon fiber cloth is movably sleeved on the surface of the bidirectional threaded rod, and one side of the carbon fiber cloth slides along the surface of the guide roller and the pressure roller.
[0008] In one embodiment, a take-up roller is movably sleeved in the middle of the bidirectional threaded rod, and the surface of the take-up roller winds up the carbon fiber cloth.
[0009] In one embodiment, the two brackets are L-shaped, with the bottom of the brackets fitted onto the surface of the base via guide rails, and the bottom of the brackets being fixedly connected to the base via fixing bolts.
[0010] In one embodiment, a telescopic block is movably provided in the middle of the support frame, and guide rods are provided on both sides of the telescopic block. The upper end of the guide rod is fixedly connected to the support frame, and the lower end of the guide rod slides inside the support frame.
[0011] In one embodiment, an extension plate is movably connected to one side of the support frame, and one side of the extension plate is fitted onto the surface of the pressure roller.
[0012] In one embodiment, a telescopic pressure rod is movably connected to one side of the support frame, and one end of the telescopic pressure rod is movably connected to the lower part of the extension plate.
[0013] In one embodiment, the guide assembly includes guide threaded rods that are threaded into the two support frames respectively. The guide threaded rods are provided with limiting rods that slide inside the support frames on both sides. One end of the two limiting rods and the guide threaded rods is provided with a guide plate. The two guide plates are movable on both sides of the guide roller.
[0014] In one embodiment, both the pressure roller and the guide roller have guide grooves on their surfaces, and the pattern of the guide grooves is the same as the direction of travel of the guide roller.
[0015] Beneficial effects
[0016] 1. By rotating the bidirectional threaded rod, the distance between the two support frames can be adjusted to accommodate the reinforcement requirements of carbon fiber cloth of different widths. Guide rollers and pressure rollers are movably inserted on the two support frames, and the guide rollers and pressure rollers rotate on the same horizontal plane to ensure that the carbon fiber cloth remains flat during the laying process. The guide components are located on both sides of the support frame and are movable at both ends of the guide rollers to prevent the carbon fiber cloth from shifting during the laying process. The carbon fiber cloth is movably sleeved on the surface of the bidirectional threaded rod, and one side slides along the surface of the guide rollers and pressure rollers. Through the compaction action of the pressure rollers, the carbon fiber cloth is tightly attached to the crack surface, thereby effectively improving the load-bearing capacity and durability of the bridge structure.
[0017] 2. The telescopic pressure bar is length-adjustable via hydraulic drive or threaded screw thread, allowing precise control of the extension plate's tilt angle. This adjusts the contact pressure distribution between the pressure roller and the crack surface, ensuring uniform force on the carbon fiber cloth. In the guide assembly, rotating the guide threaded rod drives the guide plates on both sides to move axially along the limit rod, enabling stepless adjustment of the guide roller's feed width to accommodate the centering requirements of carbon fiber cloths of different widths. The guide plate surface is inlaid with a polytetrafluoroethylene wear-resistant layer, reducing the frictional resistance of the cloth. Its arc-shaped contact surface design ensures that the carbon fiber cloth does not wrinkle or shift during the guiding process, significantly improving construction accuracy and reinforcement quality. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the winding roller structure of this utility model;
[0021] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A;
[0022] Figure 4 For the present utility model Figure 2 Schematic diagram of the structure at point B;
[0023] Figure 5 This is a schematic diagram of the pressure roller structure of this utility model.
[0024] Figure label:
[0025] 100. Base; 101. Bracket; 102. Bidirectional threaded rod; 103. Take-up roller; 104. Carbon fiber cloth; 200. Support frame; 201. Telescopic block; 202. Guide rod; 203. Extension plate; 204. Telescopic pressure rod; 300. Guide roller; 400. Guide assembly; 401. Guide threaded rod; 402. Limiting rod; 403. Guide plate; 500. Pressure roller. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0027] The following is combined with Figures 1-5 This invention describes a road and bridge crack reinforcement structure.
[0028] In one embodiment, a road and bridge crack reinforcement structure includes: a base 100, a guide assembly 400, and a carbon fiber cloth 104. Two supports 101 are slidably connected above the base 100. Two bidirectional threaded rods 102 are movably inserted into the interior of the two supports 101. Two support frames 200 are threadedly sleeved on the surface of the bidirectional threaded rods 102. Guide rollers 300 and pressure rollers 500 are movably inserted into the two support frames 200. The guide rollers 300 and pressure rollers 500 rotate on the same horizontal plane. The guide assembly 400 is located on both sides of the support frame 200 and is movable at both ends of the guide rollers 300. The carbon fiber cloth 104 is movably sleeved on the surface of the bidirectional threaded rods 102. One side of the carbon fiber cloth 104 slides along the surface of the guide rollers 300 and pressure rollers 500.
[0029] In this embodiment, the distance between the two support frames 200 can be adjusted by rotating the bidirectional threaded rod 102 to adapt to the reinforcement requirements of carbon fiber cloth 104 of different widths. Guide rollers 300 and pressure rollers 500 are movably inserted on the two support frames 200, and the guide rollers 300 and pressure rollers 500 rotate on the same horizontal plane to ensure that the carbon fiber cloth 104 remains flat during the laying process.
[0030] The guide assembly 400 is located on both sides of the support frame 200 and moves at both ends of the guide roller 300 to prevent the carbon fiber cloth 104 from shifting during the laying process. The carbon fiber cloth 104 is movably sleeved on the surface of the bidirectional threaded rod 102, and one side of it slides along the surface of the guide roller 300 and the pressure roller 500. Through the compaction action of the pressure roller 500, the carbon fiber cloth 104 is tightly attached to the surface of the crack, thereby effectively improving the load-bearing capacity and durability of the bridge structure.
[0031] Reference Figure 1 , Figure 2 and Figure 3As shown, a winding roller 103 is movably sleeved in the middle of the bidirectional threaded rod 102. The surface of the winding roller 103 winds up the carbon fiber cloth 104. The two supports 101 are L-shaped. The bottom of the supports 101 is sleeved on the surface of the base 100 through the guide rail. The bottom of the supports 101 is fixedly connected to the base 100 through the fixing bolt.
[0032] In this embodiment, a winding roller 103 is movably sleeved in the middle of the bidirectional threaded rod 102. The winding roller 103 can rotate freely around the bidirectional threaded rod 102, enabling convenient winding and unwinding of the carbon fiber cloth 104, facilitating construction operations. The two supports 101 are designed in an L-shape. This structure not only enhances the stability of the supports 101 themselves but also optimizes the spatial layout, facilitating the installation and debugging of other components. The bottom of the supports 101 is precisely fitted onto the surface of the base 100 via guide rails, ensuring that the supports 101 can slide smoothly along a predetermined trajectory to adapt to the reinforcement requirements of cracks of different widths. At the same time, the bottom of the supports 101 is also equipped with a fixing bolt. By tightening the fixing bolt, the supports 101 can be firmly fixed to the base 100 to prevent displacement during construction and ensure the accuracy and safety of the reinforcement operation.
[0033] Reference Figure 2 , Figure 3 and Figure 4 As shown, a telescopic block 201 is movably provided in the middle of the support frame 200, and guide rods 202 are provided on both sides of the telescopic block 201. The upper end of the guide rod 202 is fixedly connected to the support frame 200, and the lower end of the guide rod 202 slides inside the support frame 200. An extension plate 203 is movably connected to one side of the support frame 200, and one side of the extension plate 203 is sleeved on the surface of the pressure roller 500.
[0034] In this embodiment, the guide rod 202 is made of high-strength alloy steel. Its sliding connection design keeps the telescopic block 201 axially stable during vertical displacement. A spring is installed below the telescopic block 201. The spring is located inside the support frame 200 to avoid uneven force on the guide roller 300 due to eccentric loading. The extension plate 203 is connected to the support frame 200 through a hinge structure. Its angle is adjustable and can adapt to crack reinforcement areas of different widths.
[0035] Reference Figure 1 , Figure 2 and Figure 4 As shown, a telescopic pressure rod 204 is movably connected to one side of the support frame 200. One end of the telescopic pressure rod 204 is movably connected to the lower part of the extension plate 203. The guide assembly 400 includes a guide thread rod 401 that is threaded into the two support frames 200 respectively. Limiting rods 402 that slide inside the support frame 200 are provided on both sides of the guide thread rod 401. One end of the two limiting rods 402 and the guide thread rod 401 is provided with a guide plate 403. The two guide plates 403 are located on both sides of the guide roller 300 and can move.
[0036] In this embodiment, the telescopic pressure bar 204 is length-adjustable via hydraulic drive or threaded screw advance, which can precisely control the tilt angle of the extension plate 203, thereby adjusting the contact pressure distribution between the pressure roller 500 and the crack surface, ensuring that the carbon fiber cloth 104 is uniformly stressed. In the guide assembly 400, the rotating guide threaded rod 401 can drive the guide plates 403 on both sides to move axially along the limiting rod 402, realizing stepless adjustment of the feed width of the guide roller 300, adapting to the centering requirements of carbon fiber cloth 104 with different widths. The surface of the guide plate 403 is embedded with a polytetrafluoroethylene wear-resistant layer, which can reduce the frictional resistance of the cloth. Its arc-shaped contact surface design ensures that the carbon fiber cloth 104 does not wrinkle or shift during the guiding process, significantly improving the construction accuracy and reinforcement quality.
[0037] like Figure 1 , Figure 2 and Figure 5 As shown, the surfaces of the pressure roller 500 and the guide roller 300 are both provided with guide grooves, and the pattern of the guide grooves is the same as the travel direction of the guide roller 300.
[0038] In this embodiment, the guide groove is machined by a precision CNC machine tool, and its cross-section is V-shaped or arc-shaped, which can mechanically limit the edge of the carbon fiber cloth 104, effectively preventing the cloth from shifting laterally during high-speed laying. The groove is sprayed with a ceramic wear-resistant coating, which can significantly reduce the friction coefficient between the cloth and the roller surface, reduce the risk of carbon fiber cloth 104 fuzzing, and at the same time, the micro exhaust holes set at the bottom of the groove can timely discharge the trapped air, avoid the generation of bubble defects, and ensure the bonding quality between the reinforcement layer and the substrate.
[0039] Working principle:
[0040] The base 100 is installed on a mobile vehicle or mobile vehicle frame, and the base 100 is moved horizontally under the bridge. During construction, the base 100 is first placed across the crack. The distance between the two L-shaped brackets 101 is adjusted by the guide rail, and the fixing bolts are tightened to complete the positioning. The carbon fiber cloth 104 roll is placed on the take-up roller 103 in the middle of the bidirectional threaded rod 102. The end of the cloth passes around the guide roller 300 and the pressure roller 500 in sequence. The rotating guide threaded rod 401 drives the guide plates 403 on both sides to move along the limiting rod 402, so that the edge of the cloth is engaged in the V-shaped guide groove on the surface of the guide roller 300 to achieve precise centering. At the same time, the telescopic pressure rod 204 is operated to adjust the angle of the extension plate 203, so that the pressure roller 500 is in contact with the crack surface with the preset pressure.
[0041] The take-up roller 103 rotates to release the carbon fiber cloth 104. Driven synchronously by the guide roller 300 and the pressure roller 500, the cloth is laid flat along the crack's extension direction. The compaction effect of the pressure roller 500 causes the carbon fiber cloth 104 to form a molecular-level bond with the substrate. Micro-venting holes on its surface promptly expel interfacial air, preventing voids. When the crack width changes, the bidirectional threaded rod 102 is rotated to adjust the spacing of the support frame 200, and the guide plate 403 automatically follows the cloth width change, ensuring precise guidance throughout the process. This structure, through a triple guarantee mechanism of mechanical limiting, pressure adjustment, and venting / wrinkle prevention, significantly improves the construction quality and durability of the carbon fiber reinforcement layer.
[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A road bridge crack reinforcing structure characterized by, include: A base (100) has two supports (101) slidably connected above it. A bidirectional threaded rod (102) is movably inserted into the interior of the two supports (101). Two support frames (200) are threaded on the surface of the bidirectional threaded rod (102). A guide roller (300) and a pressure roller (500) are movably inserted into the two support frames (200). The guide roller (300) and the pressure roller (500) rotate on the same horizontal plane. A guide assembly (400) is disposed on both sides of the support frame (200) and is movable at both ends of the guide roller (300); Carbon fiber cloth (104) is movably sleeved on the surface of the bidirectional threaded rod (102), and one side of the carbon fiber cloth (104) slides along the surface of the guide roller (300) and the pressure roller (500).
2. The road bridge crack reinforcing structure according to claim 1, characterized by, The bidirectional threaded rod (102) is movably fitted with a take-up roller (103) in the middle, and the surface of the take-up roller (103) winds up the carbon fiber cloth (104).
3. The road bridge crack reinforcing structure according to claim 1, characterized by, The two brackets (101) are L-shaped. The bottom of the bracket (101) is sleeved on the surface of the base (100) through a guide rail. The bottom of the bracket (101) is fixedly connected to the base (100) through a fixing bolt.
4. The road bridge crack reinforcing structure according to claim 1, characterized by, The support frame (200) has a telescopic block (201) movably provided in the middle, and guide rods (202) are provided on both sides of the telescopic block (201). The upper end of the guide rod (202) is fixedly connected to the support frame (200), and the lower end of the guide rod (202) slides inside the support frame (200).
5. The road bridge crack reinforcing structure according to claim 1, characterized by, An extension plate (203) is movably connected to one side of the support frame (200), and one side of the extension plate (203) is sleeved on the surface of the pressure roller (500).
6. The road and bridge crack reinforcement structure according to claim 5, characterized in that, A telescopic pressure rod (204) is movably connected to one side of the support frame (200), and one end of the telescopic pressure rod (204) is movably connected to the lower part of the extension plate (203).
7. The road bridge crack reinforcing structure according to claim 6, characterized by The guide assembly (400) includes guide threaded rods (401) that are threaded into the two support frames (200) respectively. The guide threaded rods (401) are provided with limiting rods (402) that slide inside the support frames (200) on both sides. One end of the two limiting rods (402) and the guide threaded rods (401) is provided with guide plates (403). The two guide plates (403) are located on both sides of the guide roller (300) and can move.
8. The road bridge crack reinforcing structure according to claim 1, characterized by, The surfaces of the pressure roller (500) and the guide roller (300) are both provided with guide grooves, and the pattern of the guide grooves is the same as the travel direction of the guide roller (300).