Corrosion monitoring and natural environment testing device for bridge steel structure
By designing a corrosion monitoring device that adapts to the inclined surface and adjusts the solar radiation angle, the accuracy of corrosion monitoring of the supporting components of bridge steel structures is solved, and high-accurate corrosion prediction and loss reduction are achieved, and application potential in a wide range of steel fields.
Patent Information
- Application Number
- CN202411432789.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-01-14
AI Technical Summary
The prior art is difficult to effectively monitor and analyze the corrosion conditions of bridge steel structure support members, especially when the inclined structure and solar radiation angle changes, resulting in inaccurate monitoring results, affecting the stability and safety of the bridge's mechanical structure.
A corrosion monitoring and natural environment testing device with adaptive inclined surfaces and adjustable solar radiation angles is designed, including a test frame and rotating mechanism with rotation and telescopic functions, which can match the inclined surfaces of the bridge steel structure and be adjusted by motor drive. The angle of the sample is to simulate the corrosion of the bridge in the natural environment.
It realizes high-accurate corrosion monitoring and prediction of bridge steel structure support, improves the accuracy of corrosion prediction, reduces corrosion losses, and has the potential to be promoted in other steel fields.
Smart Images
Figure CN119309985A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a corrosion monitoring and natural environment testing device, in particular to a natural environment testing device for corrosion monitoring of steel structure supporting components at the bottom of a bridge. Background Art
[0002] Steel structure bridges are exposed to the acidic environment of natural environment and automobile exhaust for a long time, and are subject to severe environmental corrosion. In particular, the corrosion behavior of key components will seriously affect the mechanical structural stability and safety of the bridge, and have a significant impact on the healthy service of the bridge. The monitoring of the bridge can be done on the bridge deck platform, but the current equipment is difficult to achieve for the monitoring of the steel structure support components at the bottom of the bridge. At present, there are generally two ways to monitor the corrosion of bridge steel structures: one is the traditional manual inspection, and the other is to directly use sensors to measure the corrosion results of the bridge steel structure. However, the steel structure support components of the bridge are usually not a plane but an inclined plane, and because the sun rises in the east and sets in the west, the angle of ultraviolet radiation is different. For the inclined surface of the steel structure support components, the solar radiation received in different time periods is different.
[0003] Therefore, considering the corrosion monitoring and natural environment testing occurring at any irregular slope, it is very important to design a device that can automatically adapt to the slope and independently change the angle with solar radiation to conduct natural environment testing. Summary of the invention
[0004] In view of this, the present invention proposes a corrosion monitoring and natural environment testing device for bridge steel structures, which can adapt to the slope of the steel structure and has an adjustable solar radiation angle. The objective of the present invention is achieved through the following technical solutions: A corrosion monitoring and natural environment testing device for bridge steel structures, characterized in that it includes a test frame body, the bottom of the test frame body is provided with a connecting component connected to the bridge, the top of the test frame is an inclined surface, a solar panel and a sample rack for test samples are provided on the inclined surface, the connecting component has a rotation and telescopic function, and the sample rack is connected to the test sample through a sample rotation mechanism. Through such a setting, the test device is installed on the bridge, and the inclination of the top inclined surface of the test frame through the connecting component of the test frame body is made to be consistent with the inclination of the bridge steel structure, and the angle of the test sample is adjusted through the rotation mechanism of the sample rack, so that the angle of the sample changes according to solar radiation. In this way, the morphology observation and corrosion weight loss analysis of the hanging piece can be carried out regularly, and then the evolution analysis of the bridge steel structure in the natural environment can be obtained, thereby improving the prediction accuracy.
[0005] To further achieve adaptation to the inclined surface of the bridge steel structure, the connecting component includes a base, a connecting plate is provided at the bottom of the base, a hydraulic support rod is provided at the top of the base, a first connecting member is connected to the top of the hydraulic support rod, and also includes a second connecting member hinged to the first connecting member, and a profile mounting groove is provided on the top surface of the second connecting member.
[0006] Furthermore, the connection part A of the first connecting member is a semicircular boss, the connection part B of the second connecting member is a transverse through groove corresponding to the connection part A, the two side walls of the transverse through groove are semicircular, the connection part A is located inside the connection part B and the center of the connection part A is hinged to the center of the two side walls of the connection part B.
[0007] In order to further adapt to the solar radiation angle, the sample rotation mechanism includes a bottom bracket and a top bracket, the bottom bracket is U-shaped, the top bracket is inverted U-shaped and the top bracket is inverted on the outside of the bottom bracket, the two side wings of the top bracket are movably connected to the two side wings of the bottom bracket through connecting nails, and the bottom surface of the bottom bracket is fixedly connected to the test piece body, and limiting nails are also provided at the lower part of the two side wings of the top surface of the top bracket, and the two side wings of the top bracket are provided with arc grooves, and the limiting nails are located in the arc grooves.
[0008] Preferably, marking lines at positions of 0°, 45°, 90°, 135°, and 180° are provided on the flank walls adjacent to the inner circle of the arc-shaped groove.
[0009] In order to further achieve the adjustment of the angle of the multiple blades, the front and rear edges of the two side wings of the top bracket are provided with outwardly extending connecting rings.
[0010] Preferably, the test frame body includes a bottom frame, a rear frame and a top frame, the top frame is an inclined surface, an electrical box is installed at the rear frame, a support rod extending upward is provided on one side of the rear frame, and an integrated meteorological shutter box is provided on the top of the support rod.
[0011] Due to the adoption of the above technical solution, the present invention has the following advantages: The rotatable and retractable connection mechanism of the present invention connects the test frame body to the bridge, and the top surface of the test frame body is set as an inclined surface. By retracting and rotating the test frame body, the top surface angle is adjusted to be consistent with the inclination angle of the bridge steel structure, so as to achieve corrosion simulation of the bridge steel structure support.
[0012] The test specimen of the present invention is connected to the top surface (inclined surface) of the specimen holder through a rotating mechanism, and the rotating mechanism can be rotated by a motor and has multiple angles of adjustment. In this way, the angle of the test specimen can be adaptively adjusted according to the solar radiation angle to ensure that the solar radiation received by the test specimen is consistent with the steel structure of the bridge.
[0013] Basic equipment for regular morphological observation and corrosion weight loss analysis of hanging pieces. Supporting ACM steel corrosion data high-throughput collection, analysis, and mining technology, it has promotion potential and can serve the fields of automobiles, construction, and other fields that use a large amount of steel. It integrates big data analysis and corrosion prediction models into the evolution model analysis of various steel equipment in the environment, improves the accuracy of prediction, and is of great significance to reducing corrosion losses. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings of the present invention are as follows.
[0015] Figure 1 This is a structural diagram of the test stand body in the embodiment; Figure 2 It is a structural diagram of the connecting components in the embodiment; Figure 3 It is a simplified structural diagram of the test device in the embodiment; Figure 4 It is a structural diagram of a single rotating mechanism in the embodiment; Figure 5 A schematic diagram of multiple rotating mechanisms in the embodiment; Figure 6 Schematic diagram of the operating principle of the test device in the embodiment. DETAILED DESCRIPTION
[0016] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be construed as limiting the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.
[0017] Example: Figure 1-6 As shown, an embodiment of the present application provides a corrosion monitoring and natural environment testing device for bridge steel structures, including a test frame body, a connecting component connected to the bridge is arranged at the bottom of the test frame body, the top of the test frame is an inclined surface, and a solar panel and a sample rack for test samples are arranged on the inclined surface. The connecting component has a rotation and telescopic function, and the sample rack is connected to the test sample 5 through a sample rotation mechanism.
[0018] Specifically: the test frame body 1 is set to a triangle or a trapezoid to ensure that its top surface 11 is an inclined surface, and the test frame body is manufactured by welding or screwing aluminum profiles. The bottom surface of the test frame body has a plurality of vertically arranged aluminum profiles, and the bottom of the vertically arranged aluminum profiles is connected to the bridge through a connecting component. The connecting component 2 in this embodiment includes a base 21, and a connecting plate 22 is provided at the bottom of the base. The connecting plate is L-shaped, one side is used to fix with the base, and the other side is used to be screwed with the bridge. A hydraulic support rod 23 is provided on the top of the base, and a first connecting member 24 is connected to the top of the hydraulic support rod, and also includes a second connecting member 25 hinged to the first connecting member, and a profile mounting groove 26 is provided on the top surface of the second connecting member, and the aluminum profile used to manufacture the test frame body is inserted into the profile mounting groove on the top surface of the second connecting member. The connecting part A27 of the first connecting member is a semicircular boss, and the connecting part B28 of the second connecting member is a transverse through groove corresponding to the connecting part A. The two side walls of the transverse through groove are semicircular. The connecting part A is located in the connecting part B and the connecting part A and the two side walls of the connecting part B are movably hinged by screws to ensure that the connecting part B can rotate around the connecting part A with the connection point as the center of the circle.
[0019] The second connecting member is connected to the aluminum profile, and the first connecting member is connected through a hydraulic rod, a base and a bridge body. Then, the rotation of the second connecting member relative to the first connecting member can realize the rotation of the entire test frame body, and the lifting and lowering of the hydraulic rod can realize the lifting and lowering of the entire test frame body. Through the adjustment of lifting and angle, the top surface slope of the test frame body can be adjusted to the same angle as any irregular slope of the steel structure support member. Therefore, the sample installed on the top surface slope of the test frame body can be at the same slope as the steel structure support member.
[0020] In addition, the sample in this embodiment is installed on the top surface slope of the test frame body through the rotating mechanism 3. First, the top surface slope of the test frame body is composed of the aluminum profile, including a plurality of aluminum profile trusses distributed horizontally. The aluminum profile trusses are installed with a rotating mechanism, and the sample frame is connected through the rotating mechanism, and finally the test sample is installed on the sample frame.
[0021] Specifically, the rotating mechanism 3 includes a bottom bracket 31 and a top bracket 32. The bottom bracket is U-shaped, the top bracket is inverted U-shaped, and the top bracket is buckled outside the bottom bracket. That is to say, the two side wings (or side panels) of the top bracket are wrapped outside the two side wings (or side panels) of the bottom bracket, and the two side wings of the bottom bracket and the two side wings of the top bracket are movably connected by connecting nails 33, so that the top bracket can rotate relative to the bottom bracket around the position of the connecting nails. The bottom bracket can be fixed to the aluminum profile truss on the top inclined surface of the test frame body by screws or welding. The sample rack 4 is a rectangular frame structure, and a reinforcing rod 41 is arranged along the diagonal of the rectangular frame structure, and a connecting block 42 is arranged at the middle intersection of the two reinforcing rods. A mounting hole is arranged on the top surface of the top bracket, and the connecting block of the sample rack is connected to the mounting hole on the top surface of the top bracket. In addition, mounting holes 43 are provided along the long sides and / or short sides of the rectangular frame structure of the sample rack, and the sample pieces are connected to the mounting holes of the sample rack by screw connection.
[0022] The bottom bracket is fixedly connected to the test frame body, and the top bracket is fixedly connected to the sample through the sample frame. The bottom bracket and the top bracket are rotatably connected around the center of the circle, so the angle of the sample can be adjusted by controlling the top bracket to rotate around the bottom bracket by means of a motor, hydraulic pressure, manual operation, etc. After the adjustment is completed, the screws are tightened to fix it. In this way, the angle of the sample can be adjusted according to the angle of solar radiation.
[0023] In addition, as another implementation in this embodiment, the lower part of the two side wings of the bottom bracket is also provided with limit pins 34, and the two side wings of the top bracket are provided with arc grooves 35, and the limit pins are located in the arc grooves. Marking lines 36 at the positions of 0°, 45°, 90°, 135°, and 180° are provided on the side wing walls adjacent to the inner circle of the arc groove. In this way, the rotation angle of the top bracket can be accurately adjusted, and then the bevel angle of the sample can be adjusted.
[0024] As another implementation of this embodiment, the front and rear edges of both side wings of the top bracket are provided with outwardly extending connection rings 36. In this way, adjacent rotating mechanisms can be connected through the connection rings, preferably by screws and nuts. In this way, multiple rotating mechanisms connected together can be driven to rotate simultaneously, and multiple samples connected to the rotating mechanisms can then be rotated simultaneously to the same angle, thereby improving efficiency.
[0025] In addition, in this embodiment, the test frame body includes a bottom frame, a rear frame and a top frame, the top frame is an inclined surface, an electrical box 6 is installed at the rear frame, and a support rod 12 extending upward is provided on one side of the rear frame, and an integrated meteorological shutter box is provided on the top of the support rod.
[0026] The rotatable and retractable connection mechanism of this embodiment connects the test frame body to the bridge, and the top surface of the test frame body is set as an inclined surface. By retracting and rotating the test frame body, the angle of its top surface is adjusted to make it consistent with the inclination angle of the bridge steel structure, so as to achieve corrosion simulation of the bridge steel structure support. The test sample of this embodiment is connected to the top surface (inclined surface) of the sample frame through a rotating mechanism, and the rotating mechanism can be rotated under the action of a motor and has multiple angles of adjustment. In this way, the angle of the test sample can be adaptively adjusted according to the solar radiation angle to ensure that the solar radiation received by the test sample is consistent with the bridge steel structure. Basic equipment for regular morphological observation and corrosion weight loss analysis of the hanging piece. Supporting ACM steel corrosion data high-throughput collection, analysis, and mining technology, it has promotion potential and can serve the fields of automobiles, construction, etc. that use a large amount of steel. It integrates big data analysis and corrosion prediction models into the evolution model analysis of various steel equipment in the environment, improves the accuracy of prediction, and is of great significance to reducing corrosion losses.
[0027] Finally, an actual use example is provided in this embodiment: Installation site: plane of Chongqing Caiyuanba Yangtze River Bridge. Installation area: 2.75m×0.84m. Working temperature: -20℃~80℃. Power supply voltage: solar power supply, 24V DC output. Power supply power: maximum power of detection tooling is 20W, and charging power of solar panel is 100W. Maximum wind speed: 20m / s, can work stably. Electrical interface: standard communication protocol (Modbus) and communication interface (Ethernet interface) are provided to communicate with the host computer. The solar panel 4 is also installed on the top inclined surface of the test frame body, located at the uppermost part of the top inclined surface.
[0028] The test frame body is exposed outdoors and is welded and constructed using European standard 3030 industrial aluminum profiles. The top slope of the test frame body is used to install solar panels, and the middle and lower areas are all used to install samples, ensuring that at least 48 bare metal samples and 48 coated samples can be installed. The electrical box is used to install the control system and power supply; the integrated meteorological shutter box is used to collect environmental factors.
[0029] Since the test frame body is placed at a certain inclination angle, in order to make the test frame body be placed stably at the predetermined experimental location, it is planned to measure the inclination angle on site and reduce the length of the aluminum profile at the bottom of the test frame body to achieve the purpose of stably placing the test frame.
[0030] The materials of the corrosion test specimens include 6 commonly used metal specimens: steel, aluminum, zinc, copper, 304 stainless steel, high-strength aluminum, magnesium and titanium. The corrosion test specimens mainly have 3 specifications: a×b×c, type I: 50mm×100mm×3mm, accuracy ±0.1mm, area 30cm 2 ; Type II: 75mm×100mm×3mm, accuracy ±0.1mm, area 45cm 2 ; Type III: 100mm×150mm×3mm, accuracy ±0.1mm, area 90cm 2 .
Claims
1. A corrosion monitoring and natural environment testing device for bridge steel structures, characterized in that: The test frame comprises a test frame body, the bottom of which is provided with a connecting component connected to a bridge, the top of which is an inclined plane, on which are provided a solar panel and a sample rack for test samples, the connecting component having a rotation and telescopic function, and the sample rack is connected to the test sample via a sample rotation mechanism.
2. The corrosion monitoring and natural environment testing device for bridge steel structure according to claim 1, characterized in that: The connecting component includes a base, a connecting plate is arranged at the bottom of the base, a hydraulic support rod is arranged at the top of the base, a first connecting member is connected to the top of the hydraulic support rod, and also includes a second connecting member rotatably hinged to the first connecting member, and a profile mounting groove is arranged on the top surface of the second connecting member.
3. The corrosion monitoring and natural environment testing device for bridge steel structure according to claim 2, characterized in that: The connecting portion A of the first connecting member is a semicircular boss, the connecting portion B of the second connecting member is a transverse through groove corresponding to the connecting portion A, the two side walls of the transverse through groove are semicircular, the connecting portion A is located inside the connecting portion B and the connecting portion A and the two side walls of the connecting portion B are rotatably hinged.
4. The corrosion monitoring and natural environment testing device for bridge steel structure as claimed in claim 1, 2 or 3, characterized in that: The sample rotating mechanism includes a bottom bracket and a top bracket, the bottom bracket is U-shaped, the top bracket is inverted U-shaped and the top bracket is inverted on the outside of the bottom bracket, the two side wings of the top bracket are movably connected to the two side wings of the bottom bracket through connecting pins, and the bottom surface of the bottom bracket is fixedly connected to the top surface of the test frame body, and the top surface of the top bracket is fixedly connected to the sample frame.
5. The corrosion monitoring and natural environment testing device for bridge steel structure as claimed in claim 4, characterized in that: Limiting pins are also arranged at the lower parts of the two side wings of the bottom bracket, and arc-shaped grooves are arranged at the two side wings of the top bracket, and the limiting pins are located in the arc-shaped grooves.
6. The corrosion monitoring and natural environment testing device for bridge steel structure as claimed in claim 5, characterized in that: Marking lines at positions of 0°, 45°, 90°, 135° and 180° are arranged on the flank walls adjacent to the inner circle of the arc-shaped groove.
7. The corrosion monitoring and natural environment testing device for bridge steel structure as claimed in claim 5 or 6, characterized in that: The front and rear edges of both side wings of the top bracket are provided with connecting rings extending outwards.
8. The corrosion monitoring and natural environment testing device for bridge steel structure as claimed in claim 1, characterized in that: The test frame body includes a bottom frame, a rear frame and a top frame which are interconnected. The top frame is an inclined surface. An electrical box is installed at the rear frame. A support rod extending upward is provided on one side of the rear frame. An integrated meteorological shutter box is provided on the top of the support rod.