Detection device for anti-corrosion coating layer of steel structure

Abstract

The invention relates to the technical field of steel structure detection, in particular to a steel structure anti-corrosion coating layer detection device which comprises a base, a steel part arranged on the base and a detection mechanism used for detecting the thickness of an anti-corrosion coating layer on the steel part, the detection mechanism comprises a frame fixedly connected to the base, an air bag is fixedly connected to a transmission frame, and the air bag is communicated with a pipeline. A sliding rod is inserted into the pipeline, a transmission disc is fixedly connected to the end of the sliding rod, a transmission block is fixedly connected to the end, close to the steel part, of the sliding rod, connecting plates are fixedly connected to the two sides of the transmission block and the two sides of the pipeline, rollers are arranged on the side, close to the steel part, of the transmission block, and an air pump for injecting air into the air bag and a detector for monitoring the density of the air in the air bag are arranged on the transmission frame. By arranging the detection mechanism, the thickness condition of the anticorrosive coating layer on the surface of the steel part can be detected according to the density, the gas density is sensitive to the volume change, the fine difference of the thickness of the coating layer can be converted into quantitative density data, and high-precision detection is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure detection, in particular to a detection device for an anti-corrosion coating layer on a steel structure. Background Art

[0002] Steel structures are widely used in construction, bridges, energy and other fields due to their high strength and convenient construction. However, steel is prone to electrochemical corrosion in humid, salt spray, industrial atmosphere and other environments, which leads to a decrease in structural bearing capacity and even safety accidents. Anti-corrosion coatings delay corrosion through physical isolation and chemical protection. The quality of the coating directly affects the life of the steel structure. Therefore, the thickness index of the anti-corrosion coating layer is accurately tested. During the detection process, when manual handheld thickness gauges are used to inspect large steel components point by point, high-altitude operations or scaffolding are required, which is time-consuming and labor-intensive, and there is a risk of missed detection. In addition, electromagnetic thickness gauges are only suitable for ferromagnetic substrates and fail to work on non-magnetic materials such as stainless steel and aluminum alloys. Ultrasonic thickness gauges require a flat surface and a coating of coupling agent. They are difficult to detect complex structures such as welds and corners, and are significantly affected by temperature. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention provides a detection device for the anti-corrosion coating layer of steel structure, which has the advantages of improving detection efficiency and accuracy, and solves the problems of low detection efficiency and low accuracy.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: A device for detecting the anti-corrosion coating layer on a steel structure includes a base, a steel part is placed on the base, the base is provided with a transmission mechanism for adjusting the orientation of the steel part, and a detection mechanism for detecting the thickness of the anti-corrosion coating layer on the steel part. The detection mechanism includes a frame fixed to the base, a transmission seat is installed in a liftable manner on the frame, a transmission frame is movably installed on the transmission seat, an airbag is fixed to the transmission frame, the airbag is connected to a pipeline, a sliding rod is inserted into the pipeline, the end of the sliding rod is fixed to a transmission disk, the transmission disk is slidably connected to the inner cavity of the pipeline, a transmission block is fixed to the end of the sliding rod close to the steel part, connecting plates are fixed to both sides of the transmission block and the pipeline, springs are fixed between the connecting plates on the same parallel plane, a roller is provided on the side of the transmission block close to the steel part, an air pump for injecting gas into the airbag is provided on the transmission frame, and a detector for monitoring the gas density in the airbag is also provided.

[0005] Preferably, a stylus is fixedly mounted on the transmission block, and a touch panel corresponding to the stylus is fixedly connected to the base.

[0006] Preferably, a screw is rotatably mounted on the transmission block, a connecting frame is threadedly connected to the screw, a spur gear is fixedly connected to the end of the screw, and an electric telescopic rod 2 is fixedly mounted on the upper and lower sides of the frame, and a rack corresponding to the spur gear is fixedly connected to the free end of the electric telescopic rod 2, the teeth on the two racks are symmetrically distributed, and the roller is rotatably mounted on the connecting frame.

[0007] Preferably, the base is fixed with motor 1, the output end of motor 1 is fixed with a transmission roller, the top of the frame is rotatably mounted with a guide wheel, the transmission seat is fixed with a connecting rope, and the connecting rope passes through the frame and the guide wheel in turn to connect with the transmission roller.

[0008] Preferably, the transmission seat is fixedly mounted with an electric telescopic rod 1, and the transmission frame is fixedly connected to the free end of the electric telescopic rod 1.

[0009] Preferably, a support frame is rotatably mounted on the base, the steel part is placed in the support frame, two electric push rods are fixedly mounted on the base, the free end of the two electric push rods is fixedly connected to a transmission plate for calibrating the orientation of the steel part, two motors are fixedly mounted on the base for driving the support frame to rotate, and openings are provided on all sides of the support frame.

[0010] Preferably, an electric push rod 1 is fixedly mounted on the support frame, and a positioning plate for fixing the steel member is fixedly connected to the free end of the electric push rod 1.

[0011] Preferably, a heat sink is provided on the side of the transmission block away from the roller, and heat-conducting silica gel is provided between the heat sink and the transmission block for dissipating heat generated during the detection process.

[0012] By means of the above technical solution, the present invention provides a device for detecting an anti-corrosion coating layer on a steel structure, which has at least the following beneficial effects: 1. The detection device for the anti-corrosion coating layer of the steel structure is equipped with a detection mechanism. The detector monitors the density of the gas in the space. The thicker the coating layer, the greater the density, and vice versa. Then, the thickness of the anti-corrosion coating layer on the surface of the steel part can be detected based on the density. The gas density is sensitive to volume changes, and the slight difference in the thickness of the coating layer can be converted into quantitative density data to achieve high-precision detection.

[0013] 2. The device for detecting the anti-corrosion coating layer on steel structures allows the stylus to be swiped across the touchpad to visually display changes in the coating layer thickness through line changes. Large line deviations indicate significant thickness changes, while stable lines indicate uniform thickness. Abnormal areas can be quickly identified without the need for professional knowledge, reducing the operational threshold and the difficulty of data interpretation.

[0014] 3. The detection device for the anti-corrosion coating layer of the steel structure can perform all-round detection on the same side of the steel part. After completing the detection in a single direction (from top to bottom or from bottom to top), it can automatically switch to other positions on the same steel part surface through the mechanism to achieve detection without blind spots on the surface and avoid missed detection.

[0015] 4. The detection device for the anti-corrosion coating layer of the steel structure automatically switches the detection position after completing a linear trajectory detection without interrupting the detection process, thereby improving the overall detection efficiency. It is especially suitable for the detection of anti-corrosion coatings on large-area steel surfaces.

[0016] 5. The detection device of the anti-corrosion coating layer of the steel structure, when the electric push rod is started, drives the positioning plate to move downward, so that it moves with the steel parts and fixes the steel parts to avoid displacement of the steel parts during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the external connection structure of the transmission base of the present invention; Figure 3 Schematic diagram of the external connection structure of the transmission frame of the present invention; Figure 4 Schematic diagram of the external connection structure of the slide bar of the present invention; Figure 5 It is a structural schematic diagram of the transmission mechanism of the present invention.

[0018] Reference numerals: 100, base; 200, transmission mechanism; 201, support frame; 202, electric push rod 1; 203, positioning plate; 204, motor 2; 205, electric push rod 2; 206, transmission plate; 300. Detection mechanism; 301. Transmission seat; 302. Electric telescopic rod 1; 303. Transmission frame; 304. Pipe; 305. Airbag; 306. Slide rod; 307. Transmission plate; 308. Transmission block; 309. Roller; 310. Spring; 311. Connecting plate; 312. Detector; 313. Air pump; 314. Touch pen; 315. Touchpad; 316. Connecting frame; 317. Screw; 318. Spur gear; 319. Electric telescopic rod 2; 320. Rack; 321. Frame; 322. Motor 1; 323. Transmission roller; 324. Guide wheel. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The following describes a detection device for an anti-corrosion coating layer on a steel structure provided by some embodiments of the present invention in conjunction with the accompanying drawings.

[0021] Example 1: Manual thickness gauges are easily affected by factors such as steel surface roughness and scale residue, which can lead to data deviation. If the sensor accuracy of the automated device is insufficient (such as an uncalibrated ultrasonic probe), misjudgment of thickness may occur. In order to solve the above problems, combined with Figure 1-Figure 4 As shown, the device for detecting the anti-corrosion coating layer on a steel structure provided by the present invention includes a base 100, on which a steel part is placed. The base 100 is provided with a transmission mechanism 200 for adjusting the orientation of the steel part, which can adjust the orientation of the steel part to facilitate detection of the coating thickness at different positions of the steel part. The base 100 is also provided with a detection mechanism 300 for detecting the thickness of the anti-corrosion coating layer on the steel part, which can improve the comprehensiveness of the thickness of the anti-corrosion coating layer. The magnetic thickness gauge is only applicable to ferromagnetic substrates and is ineffective for non-magnetic materials such as stainless steel and aluminum alloys. The eddy current thickness gauge requires the substrate to be conductive and is easily interfered by the surface oxide layer and oil. In order to solve the above problems, the detection mechanism 300 includes a frame 321 fixed to the base 100, a transmission seat 301 can be installed on the frame 321, a transmission frame 303 can be movably installed on the transmission seat 301, an airbag 305 is fixed on the transmission frame 303, and the airbag 305 is connected to the pipe 304. The pipe 304 A slide rod 306 is inserted on the top, and a transmission disk 307 is fixedly connected to the end of the slide rod 306. The transmission disk 307 is slidably connected to the inner cavity of the pipe 304. A transmission block 308 is fixedly connected to the end of the slide rod 306 close to the steel piece. Connecting plates 311 are fixedly connected to both sides of the transmission block 308 and the pipe 304. Springs 310 are fixedly connected between the connecting plates 311 on the same parallel plane. A roller 309 is provided on the side of the transmission block 308 close to the steel piece. An air pump 313 for injecting gas into the airbag 305 is provided on the transmission frame 303. A detector 312 is also provided for monitoring the gas density in the airbag 305. The detector 312 is a gas density meter. First, the roller 309 is brought into contact with the surface of the steel part, and then the roller 309 moves on the steel part. When the thickness of the coating layer changes, the roller 309 moves due to the spring 310. The thicker the coating layer, the more the roller 309 moves outward. The thinner the coating layer, the more the roller 309 moves toward the steel part. The transmission block 308 moves with the roller 309, and the transmission block 308 drives the transmission disk 307 on the slide bar 306 to move. After the transmission disk 307 moves, the space for storing gas in the airbag 305 and the pipeline 304 will change, resulting in a change in gas density. Then the detector 312 monitors the density of the gas in the space. The thicker the coating layer, the greater the density, and vice versa. Then, the thickness of the anti-corrosion coating layer on the surface of the steel part can be detected based on the density. The gas density is sensitive to volume changes, and the subtle differences in the thickness of the coating layer can be converted into quantitative density data to achieve high-precision detection.

[0022] The density change is converted into an electrical signal, transmitted to the signal conditioning module via a shielded cable or twisted pair for enhancement and filtering, and then converted into a digital quantity through an analog-to-digital converter, or directly read by the processor through an interface; the processor calculates the thickness value in real time based on the calibrated density-thickness correspondence, and transmits it to the display module through the interface for intuitive display in the form of numerical values, curves or color cloud maps (thickness ranges correspond to different colors).

[0023] Specifically, a stylus 314 is fixedly mounted on the transmission block 308, and a touchpad 315 corresponding to the stylus 314 is fixedly connected to the base 100. As the stylus 314 moves with the transmission block 308, the stylus 314 slides on the touchpad 315, and then the thickness change of the paint layer can be intuitively displayed through the change of the line. A large deviation of the line indicates a significant change in thickness, and a smooth line indicates a uniform thickness. Abnormal areas can be quickly identified without professional knowledge, which reduces the operating threshold and the difficulty of data interpretation.

[0024] Furthermore, a heat sink is provided on the side of the transmission block 308 away from the roller 309 , and thermally conductive silica gel is provided between the heat sink and the transmission block 308 for dissipating heat generated during the detection process.

[0025] According to the embodiment, there is no need to directly squeeze or destroy the coating layer, and the inspection can be completed by only light contact with the roller 309, thereby ensuring the integrity of the anti-corrosion layer of the steel part.

[0026] Example 2: If there is no automatic lateral movement mechanism, the detection device may only be able to move in a single direction (such as vertical direction), resulting in missed inspection of the lateral area of ​​the steel surface; or the position of the detection head may need to be manually adjusted, resulting in operational errors and coverage blind spots. In order to solve the above problems, combined with Figure 3 and Figure 4 As shown, on the basis of embodiment 1, a screw rod 317 is rotatably installed on the transmission block 308, and a connecting frame 316 is slidably connected to the transmission block 308 on the screw rod 317. The end of the screw rod 317 is fixedly connected to a spur gear 318. The upper and lower sides of the frame 321 are fixedly equipped with an electric telescopic rod 2 319. The free end of the electric telescopic rod 2 319 is fixedly connected to a rack 320 corresponding to the spur gear 318. The teeth on the two racks 320 are symmetrically distributed. The roller 309 is rotatably installed on the connecting frame 316. After the top-down or bottom-up detection is completed, when it is necessary to detect other positions on the same surface of the steel part, the electric telescopic rods in similar positions are installed. When rod 2 319 is started, rack 320 is driven to move, rack 320 is engaged with spur gear 318 to drive screw 317 to rotate, screw 317 rotates to drive roller 309 on connecting frame 316 to move sideways. After adjustment is completed, detection is continued, and then electric telescopic rod 2 319 at the corresponding position is started to drive rack 320 to move in the opposite direction, driving the gear to move in the same direction, so that roller 309 moves to the same side, so that all-round detection can be performed on the same surface of the steel part. After completing the detection in a single direction (from top to bottom or from bottom to top), it can automatically switch to other positions on the same surface of the steel part through the mechanism to achieve detection without dead angles within the surface and avoid missed detection.

[0027] Specifically, a motor 322 is fixedly installed on the base 100, and a transmission roller 323 is fixedly connected to the output end of the motor 322. A guide wheel 324 is rotatably installed on the top of the frame 321. A connecting rope is fixedly connected to the transmission seat 301. The connecting rope passes through the frame 321 and the guide wheel 324 in turn and is connected to the transmission roller 323. When the motor 322 is started, the transmission roller 323 is driven to rotate. The rotation of the transmission roller 323 can release and retract the rope, thereby driving the transmission seat 301 to move up and down, which is convenient for detecting steel parts.

[0028] Furthermore, an electric telescopic rod 302 is fixed on the transmission base 301, and the transmission frame 303 is fixed to the free end of the electric telescopic rod 302. When the electric telescopic rod 302 is started, the transmission frame 303 is driven to move, so that the roller 309 on the transmission frame 303 fits the surface of the steel part.

[0029] According to the embodiment, after completing a straight line trajectory inspection, the mechanism automatically switches the inspection position without interrupting the inspection process, thereby improving the overall inspection efficiency. It is particularly suitable for anti-corrosion coating inspection on large-area steel surfaces.

[0030] Example 3: Since the placement of steel parts may have a certain offset, making the steel parts uneven, in order to solve the above problem, combined with Figure 1 and Figure 4 As shown, on the basis of Example 1, a support frame 201 is rotatably mounted on the base 100, and the steel part is placed in the support frame 201. An electric push rod 205 is fixedly mounted on the base 100, and the free end of the electric push rod 205 is fixedly connected to a transmission plate 206 for calibrating the orientation of the steel part. A motor 204 for driving the support frame 201 to rotate is fixedly mounted on the base 100. Openings are provided on all sides of the support frame 201. When the motor 204 is started, the support frame 201 is driven to rotate, which can change the surface of the steel part, facilitate the detection of other surfaces, and help to improve the comprehensiveness of the detection.

[0031] Furthermore, a heat sink is provided on the side of the transmission block 308 away from the roller 309 , and thermally conductive silica gel is provided between the heat sink and the transmission block 308 for dissipating heat generated during the detection process.

[0032] According to the embodiment, there is no need to directly squeeze or destroy the coating layer, and the inspection can be completed by only light contact with the roller 309, thereby ensuring the integrity of the anti-corrosion layer of the steel part.

[0033] Through the above embodiment, it can be known that: the steel part is placed in the support frame 201 of the base 100, the electric push rod 205 is started to drive the transmission plate 206 to move and push the steel part to contact the inner wall of the support frame 201 for calibration, and the electric push rod 1 202 is started to drive the positioning plate 203 to move down and fix the steel part; the motor 1 322 is started to drive the transmission roller 323 to rotate and retract the connecting rope, driving the transmission seat 301 to rise and fall along the frame 321, and the electric telescopic rod 1 302 is started to drive the transmission frame 303 to move so that the roller 309 is in contact with the surface of the steel part; the roller 309 moves on the surface of the steel part for detection. When the thickness of the coating layer changes, the roller 309 is acted upon by the spring 310 to move outward or in the direction of the steel part as the thickness increases or decreases, driving the transmission block 308 and the transmission disk 307 on the slide bar 306 to move, changing the airbag 305 and the pipeline The gas density change in the gas space within 304 is monitored by the detector 312 (gas density meter). The thicker the coating layer, the greater the density. At the same time, the touch pen 314 on the transmission block 308 slides on the touch pad 315 to intuitively display the thickness change. After testing a certain position on one side of the steel part, the second electric telescopic rod 319 in a similar position is started to drive the rack 320 to move, meshing with the spur gear 318 to drive the screw rod 317 to rotate, so that the roller 309 on the connecting frame 316 moves to the side to adjust the position for continued testing. The second electric telescopic rod 319 in the corresponding position is started to drive the rack 320 to move in the opposite direction, so that the roller 309 moves to the same side to achieve full-scale testing of the same side of the steel part. If other sides of the steel part need to be tested, the second motor 204 is started to drive the support frame 201 to rotate and adjust the position of the steel part, and then the above testing steps are repeated.

[0034] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting an anti-corrosion coating layer on a steel structure, comprising a base (100), a steel part being placed on the base (100), and characterized in that: The base (100) is provided with a transmission mechanism (200) for adjusting the orientation of the steel piece, and is also provided with a detection mechanism (300) for detecting the thickness of the anti-corrosion coating layer on the steel piece; The detection mechanism (300) includes a frame (321) fixedly connected to the base (100), a transmission seat (301) is movably mounted on the frame (321), a transmission frame (303) is movably mounted on the transmission seat (301), an air bag (305) is fixedly connected to the transmission frame (303), a pipe (304) is connected to the air bag (305), a slide rod (306) is inserted into the pipe (304), a transmission disc (307) is fixedly connected to the end of the slide rod (306), and the transmission disc (307) is connected to the pipe (304). The cavity is slidably connected, a transmission block (308) is fixedly connected to the end of the sliding rod (306) close to the steel piece, connecting plates (311) are fixedly connected to both sides of the transmission block (308) and the pipe (304), and springs (310) are fixedly connected between the connecting plates (311) on the same parallel plane. A roller (309) is provided on the side of the transmission block (308) close to the steel piece, and an air pump (313) for injecting gas into the airbag (305) is provided on the transmission frame (303), and a detector (312) for monitoring the gas density in the airbag (305) is also provided.

2. The detection device for the anti-corrosion coating layer on a steel structure according to claim 1, characterized in that: A touch pen (314) is fixedly mounted on the transmission block (308), and a touch panel (315) corresponding to the touch pen (314) is fixedly connected to the base (100).

3. The detection device for anti-corrosion coating layer on steel structure according to claim 1, characterized in that: A screw rod (317) is rotatably mounted on the transmission block (308), and a connecting frame (316) is threadedly connected to the screw rod (317) and slidably connected to the transmission block (308). The end of the screw rod (317) is fixedly connected to a spur gear (318). Electric telescopic rod 2 (319) is fixedly mounted on the upper and lower sides of the frame (321). The free end of the electric telescopic rod 2 (319) is fixedly connected to a rack (320) corresponding to the spur gear (318). The teeth on the two racks (320) are symmetrically distributed. The roller (309) is rotatably mounted on the connecting frame (316).

4. The detection device for anti-corrosion coating layer on steel structure according to claim 1, characterized in that: A motor 1 (322) is fixedly mounted on the base (100), a transmission roller (323) is fixedly connected to the output end of the motor 1 (322), a guide wheel (324) is rotatably mounted on the top of the frame (321), a connecting rope is fixedly mounted on the transmission seat (301), and the connecting rope passes through the frame (321) and the guide wheel (324) in sequence to be connected to the transmission roller (323).

5. The device for detecting the anti-corrosion coating layer on a steel structure according to claim 1, characterized in that: The transmission seat (301) is fixedly mounted with an electric telescopic rod (302), and the transmission frame (303) is fixedly connected to the free end of the electric telescopic rod (302).

6. The device for detecting the anti-corrosion coating layer on a steel structure according to claim 1, characterized in that: A support frame (201) is rotatably mounted on the base (100), and a steel part is placed in the support frame (201). A second electric push rod (205) is fixedly mounted on the base (100), and a transmission plate (206) for calibrating the orientation of the steel part is fixedly connected to the free end of the second electric push rod (205). A second motor (204) for driving the support frame (201) to rotate is fixedly mounted on the base (100), and openings are provided on all sides of the support frame (201).

7. The device for detecting the anti-corrosion coating layer on a steel structure according to claim 6, characterized in that: An electric push rod 1 (202) is fixedly mounted on the support frame (201), and a positioning plate (203) for fixing a steel part is fixedly connected to the free end of the electric push rod 1 (202).

8. The device for detecting the anti-corrosion coating layer on a steel structure according to claim 1, characterized in that: A heat sink is provided on a side of the transmission block (308) away from the roller (309), and heat-conducting silica gel is provided between the heat sink and the transmission block (308) for dissipating heat generated during the detection process.

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