A wind power mixed tower reinforced concrete corrosion monitoring device

Abstract

The utility model discloses a kind of wind power mixed tower reinforced concrete corrosion monitoring equipment, belong to reinforced corrosion monitoring technical field, comprising: support frame, through hole for reinforcing bar is passed and is provided on support frame, fixedly connected with extension plate on support frame, slidingly installed with pressing plate on extension plate, fixedly connected with spring between pressing plate and extension plate, first rack is fixedly connected with pressing plate close to support frame side, first gear meshed with first rack and second gear meshed with first gear are rotatably connected on extension plate, the diameter of second gear is greater than the diameter of first gear, second rack meshed with second gear is slidingly connected on extension plate, fixedly connected with fiber optic line on support frame, fiber optic line is fixedly connected with pressing plate through support frame, second rack bottom end is fixedly connected with fiber optic line.The utility model is through the diameter of second gear is greater than the diameter of first gear, the expansion of reinforcing bar has been amplified processing, to improve the monitoring sensitivity of reinforcing bar corrosion.

Description

Technical Field

[0001] This utility model belongs to the field of steel corrosion monitoring technology, specifically relating to a corrosion monitoring device for reinforced concrete in wind power mixed towers. Background Technology

[0002] Steel corrosion in wind turbine hybrid towers is one of the main factors affecting the durability of hybrid tower structures. Moreover, as tall structures, wind turbine hybrid towers have high maintenance costs. Real-time corrosion monitoring is beneficial for better evaluating the corrosion status, obtaining corrosion information of the building structure, achieving effective early warning, reducing unnecessary inspections and maintenance, and saving maintenance costs for hybrid towers.

[0003] Existing technologies, such as Chinese Patent Publication No. CN118914060B, disclose a device for monitoring localized corrosion of reinforcing bars in concrete structures. When corrosion occurs, the expansion of the reinforcing bar causes deformation of the optical fiber, thereby monitoring the corrosion status. However, this technology places the concrete casting at the far end of the optical fiber, so even slight deformation of the reinforcing bar results in a smaller deformation of the optical fiber, thus affecting the monitoring sensitivity.

[0004] Therefore, it is necessary to propose a corrosion monitoring device for reinforced concrete in wind power towers to solve the above problems. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a wind power mixed tower reinforced concrete corrosion monitoring device to solve the problem of poor sensitivity of steel corrosion monitoring in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a corrosion monitoring device for reinforced concrete in wind power towers, comprising: a support frame fixedly installed on the reinforcing steel bar to be tested; the support frame having a through hole for the reinforcing steel bar to pass through; an extension plate extending axially along the reinforcing steel bar fixedly connected to the support frame; a pressure plate slidably installed on the extension plate and capable of sliding radially along the reinforcing steel bar; a spring fixedly connected between the pressure plate and the extension plate; a first rack fixedly connected to the pressure plate near the support frame; a first gear meshing with the first rack and a second gear meshing with the first gear rotatably connected to the extension plate, the diameter of the second gear being larger than the diameter of the first gear; a second rack slidably connected to the extension plate and meshing with the second gear, the second rack being capable of sliding radially along the reinforcing steel bar; an optical fiber fixedly connected to the support frame; the optical fiber passing through the support frame and fixedly connected to the pressure plate; and the bottom end of the second rack fixedly connected to the optical fiber.

[0008] Furthermore, both the pressure plate and the support frame are provided with sliding holes, and a slider that can slide along the radial direction of the reinforcing bar is slidably connected in the sliding holes. The slider is provided with an installation hole for the optical fiber to pass through. A screw is fixedly connected to the end of the slider away from the reinforcing bar. The screw on the support frame is threadedly connected to the support frame, and the screw on the pressure plate is threadedly connected to the pressure plate.

[0009] Furthermore, the screw extends from the end away from the slider and is fixedly connected to an adjusting gear above the extension plate, and the upper limit of the extension plate is slidably connected to an adjusting rack that meshes with both adjusting gears.

[0010] Furthermore, an adjusting screw is rotatably connected to the extension plate, and the adjusting screw is threadedly connected to the adjusting rack. Rotating the adjusting screw allows the adjusting rack to slide.

[0011] Furthermore, the diameter of the second gear is 3-5 times that of the first gear.

[0012] Furthermore, the extension plate is provided with a first sliding groove that cooperates with the pressure plate, the pressure plate is slidably connected in the first sliding groove, and the spring is disposed between the pressure plate and the top wall of the first sliding groove.

[0013] Furthermore, the extension plate is provided with a second sliding groove that cooperates with the second rack, and the second rack is slidably connected in the second sliding groove.

[0014] The beneficial effect of this utility model is that by setting the diameter of the second gear to be larger than that of the first gear, the upward pulling distance of the second rack is greater than the upward moving distance of the pressure plate, thus "amplifying" the expansion of the steel bar and improving the monitoring sensitivity of steel bar corrosion.

[0015] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0017] Figure 1 This is a cross-sectional view of the overall structure of an embodiment of the present utility model.

[0018] The following are the markings in the attached diagram: 1. Reinforcing bar; 2. Support frame; 201. Through hole; 3. Extension plate; 301. First gear; 302. Second gear; 303. Second rack; 304. First groove; 305. Pressure plate; 4. Spring; 401. First rack; 5. Fiber optic cable; 6. Sliding hole; 601. Slider; 602. Adjusting gear; 603. Adjusting rack; 604. Adjusting screw; 605. Mounting hole; 606. Detailed Implementation

[0019] like Figure 1 As shown, this utility model provides a corrosion monitoring device for reinforced concrete in wind power towers, comprising: a support frame 2 fixedly installed on the reinforcing bar 1 to be tested; the support frame 2 having a through hole 201 for the reinforcing bar 1 to pass through; an extension plate 3 extending axially along the reinforcing bar 1 fixedly connected to the support frame 2; a pressure plate 4 slidably installed on the extension plate 3, capable of sliding radially along the reinforcing bar 1; a spring 401 fixedly connected between the pressure plate 4 and the extension plate 3; a first rack 401 fixedly connected to the pressure plate 4 near the support frame 2; and a first gear 301 rotatably connected to the extension plate 3, meshing with the first rack 401. A second gear 302 meshes with the first gear 301, the diameter of the second gear 302 being larger than the diameter of the first gear 301. A second rack 303 meshes with the second gear 302 and is slidably connected to the extension plate 3. The second rack 303 can slide radially along the reinforcing bar 1. An optical fiber 5 is fixedly connected to the support frame 2. The optical fiber 5 passes through the support frame 2 and is fixedly connected to the pressure plate 4. The bottom end of the second rack 303 is fixedly connected to the optical fiber 5. The fixing method can be to open a hole at the bottom end of the first rack 303 through which the optical fiber 5 passes or other conventional fixing methods in the art, which will not be described in detail here. The extension plate 3 is provided with a first sliding groove 304 that cooperates with the pressure plate 4. The pressure plate 4 is slidably connected in the first sliding groove 304. The spring 401 is provided between the pressure plate 4 and the top wall of the first sliding groove 304. The extension plate 3 is provided with a second sliding groove 305 that cooperates with the second rack 303. The second rack 303 is slidably connected in the second sliding groove 305. The diameter of the second gear 302 is 3-5 times the diameter of the first gear 301.

[0020] In this scheme, when installing the monitoring device, the support frame 2 is first fixedly installed on the reinforcing bar 1, so that the pressure plate 4 abuts against the surface of the reinforcing bar 1 under the action of the spring 401. Then, the second rack 303 hangs down naturally through the transmission of the first gear 301 and the second gear 302. Then, the optical fiber 5 passes through the end of the support frame 2 and is fixed to the pressure plate 4, so that the optical fiber 5 is straightened and fixedly connected to the bottom end of the second rack 303. When the reinforcing bar 1 is corroded, the expansion drives the pressure plate 4 to move radially, thereby driving the second rack 303 to pull the optical fiber 5 upward through the transmission of the first gear 301 and the second gear 302, so that the optical fiber 5 is deformed under force, thereby causing the center wave of the optical fiber 5 to change, thereby realizing the monitoring of the corrosion of the reinforcing bar 1. The optical fiber 5 adopts a Bragg grating.

[0021] This scheme sets the diameter of the second gear 302 to be larger than that of the first gear 301, so that the upward pull distance of the second rack 303 is greater than the upward movement distance of the pressure plate 4, thus "amplifying" the expansion of the steel bar and improving the monitoring sensitivity of steel bar corrosion.

[0022] In one embodiment of this utility model, both the pressure plate 4 and the support frame 2 are provided with sliding holes 6. A slider 601 that can slide radially along the reinforcing bar 1 is slidably connected in the sliding hole 6. The slider 601 is provided with an installation hole 606 for the optical fiber 5 to pass through. A screw 602 is fixedly connected to the end of the slider 601 away from the reinforcing bar 1. The screw 602 on the support frame 2 is threadedly connected to the support frame 2. The screw 602 on the pressure plate 4 is threadedly connected to the pressure plate 4.

[0023] In this scheme, rotating the two screws 602 can drive the two sliders 601 to move along the sliding hole 6, thereby adjusting the height of the two screws 602 to adjust the position of the optical fiber 5 so that the optical fiber 5 is in contact with the bottom end of the second rack 303 in the initial state.

[0024] In one embodiment of the present invention, the screw 602 extends away from the slider 601 and is fixedly connected to the upper part of the extension plate 3 with an adjusting gear 603, and the upper limit of the extension plate 3 is slidably connected with an adjusting rack 604 that meshes with both adjusting gears 603.

[0025] In this scheme, the two adjusting gears 603 can be rotated synchronously by sliding the adjusting rack 604, thereby ensuring the synchronicity of the movement of the two sliders 601 and ensuring that the optical fiber line 5 moves horizontally.

[0026] In one embodiment of this utility model, an adjusting screw 605 is rotatably connected to the extension plate 3. The adjusting screw 605 is threadedly connected to the adjusting rack 604. Rotating the adjusting screw 605 can make the adjusting rack 604 slide, thereby improving the stability of the adjusting rack 604 after it slides to the preset position.

[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A corrosion monitoring device for reinforced concrete wind turbine towers, comprising: A support frame fixedly installed on a reinforcing bar to be tested, characterized in that: the support frame is provided with a through hole for the reinforcing bar to pass through; an extension plate extending axially along the reinforcing bar is fixedly connected to the support frame; a pressure plate capable of sliding radially along the reinforcing bar is slidably installed on the extension plate; a spring is fixedly connected between the pressure plate and the extension plate; a first rack is fixedly connected to the pressure plate near the support frame; a first gear meshing with the first rack and a second gear meshing with the first gear are rotatably connected to the extension plate; the diameter of the second gear is larger than the diameter of the first gear; a second rack meshing with the second gear is slidably connected to the extension plate; the second rack is capable of sliding radially along the reinforcing bar; an optical fiber is fixedly connected to the support frame; the optical fiber passes through the support frame and is fixedly connected to the pressure plate; and the bottom end of the second rack is fixedly connected to the optical fiber.

2. The reinforced concrete corrosion monitoring equipment according to claim 1, characterized in that: Both the pressure plate and the support frame are provided with sliding holes. A slider that can slide along the radial direction of the reinforcing bar is slidably connected in the sliding holes. The slider is provided with an installation hole for the optical fiber to pass through. A screw is fixedly connected to the end of the slider away from the reinforcing bar. The screw on the support frame is threadedly connected to the support frame, and the screw on the pressure plate is threadedly connected to the pressure plate.

3. The reinforced concrete corrosion monitoring equipment according to claim 2, characterized in that: The screw extends from the end away from the slider to the top of the extension plate and is fixedly connected to an adjusting gear. The upper limit of the extension plate is slidably connected to an adjusting rack that meshes with both adjusting gears.

4. The reinforced concrete corrosion monitoring equipment according to claim 3, characterized in that: An adjusting screw is rotatably connected to the extension plate. The adjusting screw is threadedly connected to the adjusting rack. Rotating the adjusting screw allows the adjusting rack to slide.

5. The reinforced concrete corrosion monitoring equipment according to claim 1, characterized in that: The diameter of the second gear is 3-5 times that of the first gear.

6. The reinforced concrete corrosion monitoring equipment according to claim 1, characterized in that: The extension plate is provided with a first sliding groove that cooperates with the pressure plate. The pressure plate is slidably connected in the first sliding groove, and the spring is disposed between the pressure plate and the top wall of the first sliding groove.

7. The reinforced concrete corrosion monitoring equipment according to claim 1, characterized in that: The extension plate is provided with a second slide groove that cooperates with the second rack, and the second rack is slidably connected in the second slide groove.

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