Steel surface treatment and stress detection integrated equipment

Abstract

Steel surface treatment and stress detection integrated equipment comprises an equipment main body, and the equipment main body comprises a transportation table, a pretreatment section and a detection section which are connected in sequence; a surface detection mechanism is integrally arranged on the conveying table; the pretreatment section comprises a polishing mechanism and a flushing mechanism; a surface acoustic wave stress detection system is arranged at the tail end of the detection section, and a defect marking device is configured for marking unqualified steel. The surface of the steel is detected and analyzed by the surface detection mechanism when the steel passes through the detection channel, the steel sequentially passes through the grinding channel and the flushing cavity of the pretreatment section, and the grinding mechanism and the flushing mechanism grind the surfaces of the steel on the two sides of the detected weld joint according to the detection and analysis result of the surface detection mechanism; or the surface of the steel is subjected to high-pressure washing treatment, the pretreated steel is conveyed to the detection platform, stress detection is conducted through the dual-mode probe set on the detection platform, and unqualified steel is identified through the programmable ink-jet printer.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel stress detection, and particularly relates to an integrated device for steel surface treatment and stress detection. Background Technique

[0002] The project background of the surface acoustic wave wireless passive steel structure stress detection system is of great significance. Theoretically, the system provides a new theoretical model and method for steel structure stress monitoring, fills the theoretical gap in related fields, and has high theoretical value. In practical applications, it can detect the stress of steel structures in real time and accurately, and is widely used in projects such as bridges and buildings to timely discover potential safety hazards, avoid major accidents, and save a large amount of maintenance costs. For the industry, it promotes the innovation of steel structure detection technology and improves the overall detection level.

[0003] Steel structures are commonly used components in the construction field. Before a steel structure is put into use, prestress detection needs to be carried out on it. When existing building steel structure prestress detection equipment is actually used, the following points need to be noted:

[0004] 1. Before detection, the surface of the steel structure needs to be treated to ensure that the surface is smooth and free of impurities such as oil stains.

[0005] 2. When detecting the welded part, the influence of welding residual stress needs to be noted to avoid misjudgment.

[0006] 3. The surfaces of the base metals on both sides of the weld to be inspected need to be treated in advance, and impurities such as welding slag, spatter, concrete, and oil stains are ground off to expose the surface layer with metallic luster. Summary of the Invention

[0007] In view of the above, the present invention provides an integrated device for steel surface treatment and stress detection to solve the problems raised in the above background technique.

[0008] According to a technical solution provided by the present invention: an integrated device for steel surface treatment and stress detection, including: a device main body, the device main body includes a transportation table, a pretreatment section, and a detection section connected in sequence; a surface detection mechanism is integrally arranged on the transportation table, and the surface detection mechanism is signal-connected to a programmable controller to detect and analyze the surface of the steel during transportation; the pretreatment section includes a grinding mechanism and a flushing mechanism linked with the surface detection mechanism, wherein: when it is detected that there is oil stain or mud on the surface of the steel, the flushing mechanism is automatically started and high-pressure flushing treatment is carried out to avoid misdetection; when it is detected that the surface of the welded part of the steel is uneven, the grinding mechanism is automatically started and the surfaces of the steels on both sides of the weld to be inspected are ground; a surface acoustic wave stress detection system is arranged at the end of the detection section, and a defect marking device is configured to mark the unqualified steels in the case of excluding misdetection caused by external factors.

[0009] Further, the surface detection mechanism forms a detection channel at the front section of the transport table. The surface detection mechanism includes: a visual recognition module, configured with an industrial camera and a laser tracker, for identifying the morphological characteristics of the weld seam and generating the three-dimensional coordinates of the weld seam on the steel surface; a pollutant detection module, configured with a laser scanner and a reflectance analysis unit, for detecting oil stains or mud on the steel surface.

[0010] Further, the grinding mechanism includes a grinding housing. The grinding housing is arranged in the middle section of the transport table to form a grinding channel. A movable rotary grinding head assembly is arranged at the top of the grinding housing. The rotary grinding head assembly includes a servo motor, a hydraulic rod, and a rotatable grinding head. A moving track is arranged at the top of the grinding housing. The servo motor is cooperatively installed on the moving track. The hydraulic rod is connected to the grinding head and is vertically arranged on the servo motor. The visual recognition module is signal-connected to the rotary grinding head assembly to transmit the three-dimensional coordinates of the weld seam on the steel surface, and correspondingly controls the rotary grinding head assembly to act to perform fixed-point grinding on the weld seam on the steel surface.

[0011] Further, the flushing mechanism includes a flushing cavity and a waste water recovery tank. The flushing cavity is arranged in the rear section of the transport table to form a flushing channel. The waste water recovery tank is installed directly below the rear section of the transport table and cooperates with the flushing cavity for waste water recovery. A multi-directional high-pressure nozzle group is arranged at the top of the flushing cavity to perform high-pressure water flushing on the steel surface.

[0012] Further, the surface acoustic wave stress detection system includes a detection platform. A dual-mode probe group is arranged on the detection platform to detect the stress on the steel surface that has passed through the pretreatment section.

[0013] Further, it also includes a data analysis module, configured with a crack feature database and a pattern recognition algorithm. The data analysis module is signal-connected to the dual-mode probe group.

[0014] Further, the defect marking device includes a programmable inkjet printer. The programmable inkjet printer is installed on the detection platform and is configured with a color coding rule library, where a red mark indicates a structural defect and a yellow mark indicates a surface defect.

[0015] Further, a speed feedback device is arranged on the transport table, forming a closed-loop control with the surface detection mechanism, and the conveying speed is dynamically adjusted according to the detection results.

[0016] In view of the deficiencies of existing steel stress detection equipment, this invention patent provides an integrated equipment for steel surface treatment and stress detection. By setting up a transport table, a pretreatment section, and a detection section, the steel is placed on the transport table for transportation. First, the steel passes through the detection channel, and the surface detection mechanism detects and analyzes its surface. Then, the steel sequentially passes through the grinding channel and the flushing cavity in the pretreatment section. According to the detection and analysis results of the surface detection mechanism, the flushing mechanism is automatically activated to perform high-pressure flushing treatment on the steel surface, or the grinding mechanism is automatically activated to perform grinding treatment on the steel surfaces on both sides of the weld to be inspected. Finally, the pretreated steel is transported to the detection platform in the detection section, and the dual-mode probe group on the detection platform performs stress detection on the steel surface that has passed through the pretreatment section. And the programmable inkjet printer is used to mark the steel with unqualified detection results, where the red mark indicates structural defects and the yellow mark indicates surface defects, ensuring that the steel surface is smooth and free of impurities such as oil stains before stress detection, and the surfaces of the base metals on both sides of the weld to be inspected are treated in advance, grinding off impurities such as welding slag, spatter, concrete, and oil stains to expose the metal-luster surface layer, avoiding the influence of welding residual stress or oil stain impurities and causing misjudgment. At the same time, marking the steel with unqualified stress detection results facilitates subsequent processing. Brief Description of the Drawings

[0017] Figure 1 is the structural schematic diagram of the present invention.

[0018] Figure 2 is the assembly schematic diagram of the pretreatment section.

[0019] Figure 3 is the structural schematic diagram of the surface detection mechanism.

[0020] Figure 4 is the structural schematic diagram of the grinding mechanism.

[0021] Figure 5 is the structural schematic diagram of the flushing mechanism.

[0022] Figure 6 is the assembly schematic diagram of the detection section.

[0023] Figure 7 is the principle flow chart of the present invention.

[0024] In the figure, 1 is a transport table; 2 is a surface detection mechanism; 3 is a vision recognition module; 4 is a pollutant detection module; 5 is a grinding mechanism; 6 is a moving track; 7 is a servo motor; 8 is a hydraulic rod; 9 is a grinding head; 10 is a flushing mechanism; 11 is a waste water recovery tank; 12 is a flushing channel; 13 is a multi-directional high-pressure nozzle group; 14 is a water pipe; 15 is a surface acoustic wave stress detection system; 16 is a dual-mode probe group; 17 is a data analysis module; 18 is a programmable inkjet printer; 19 is a speed feedback device; 20 is a programmable logic controller. Detailed implementation manners

[0025] The present invention will be further described below in conjunction with the accompanying drawings and some implementation manners.

[0026] In Figures 1-7 , an integrated device for steel surface treatment and stress detection is provided, including: a device main body, the device main body includes a transport table 1, a pretreatment section and a detection section connected in sequence; the surface detection mechanism 2 is integrally arranged on the transport table 1, and the surface detection mechanism 2 is in signal connection with the programmable logic controller 20, and the surface of the steel is detected and analyzed during the transportation of the steel; the surface detection mechanism 2 forms a detection channel in the front section of the transport table 1, and the surface detection mechanism 2 includes: a pollutant detection module 4, configured with a laser scanner and a reflectivity analysis unit, for detecting oil stains or mud on the surface of the steel; a vision recognition module 3, configured with an industrial camera and a laser tracker, for identifying the weld morphology characteristics and generating the three-dimensional coordinates of the weld on the surface of the steel; in use, the steel is placed on the transport table 1 for transportation. First, the steel passes through the detection channel, and the configured laser scanner and reflectivity analysis unit scan the surface of the steel. When it is detected that there are oil stains or mud on the surface of the steel, a flushing signal is generated and transmitted to the flushing mechanism 10, and the multi-directional high-pressure nozzle group 13 is controlled to start and perform high-pressure flushing treatment on the surface of the steel, ensuring that the surface of the steel is smooth and free of impurities such as oil stains before stress detection, and avoiding the influence of welding residual stress or oil stain impurities, resulting in misjudgment; at the same time, the surface of the steel is detected and analyzed by the vision recognition module 3 and the pollutant detection module 4, and the configured industrial camera and laser tracker scan the surface of the steel. When it is detected that there is a weld on the surface of the steel, the weld morphology characteristics are identified and the three-dimensional coordinate signal of the weld on the surface of the steel is generated, and the three-dimensional coordinate signal is transmitted to the rotary grinding head assembly, and the rotary grinding head assembly is controlled to start to grind the surfaces of the steel on both sides of the weld to be inspected.

[0027] In this embodiment, the laser tracker is a measuring instrument used for industrial measurement systems and robot calibration. This device can confirm the position of points in three-dimensional space without using a retroreflective sphere, and its accuracy can reach the metrological level. In this embodiment, it is used in conjunction with an industrial camera to identify the three-dimensional coordinate position of the weld on the surface of the steel. Common device models include Keyence WM-6000, MIC4 models, etc.

[0028] In this embodiment, common models of laser scanners for detecting oil stains or dirt on the surface of steel include the German Xita surface cleanliness detector and the HD-HC500 metal surface oil stain cleanliness tester; the German Xita surface cleanliness detector is a portable device with high precision (0.1%) and light weight (530 g), and is suitable for detecting oil stains and cleanliness on the surface of metal laser welding. This instrument uses laser technology and can quickly and accurately detect oil stains and dirt on the surface of steel.

[0029] In this embodiment, the pretreatment section includes a grinding mechanism 5 and a flushing mechanism 10 linked to the surface detection mechanism 2, where: when a welding part is detected on the surface of the steel, the grinding mechanism 5 is automatically started and the surfaces of the steel on both sides of the weld to be inspected are ground; the grinding mechanism 5 includes a grinding housing, the grinding housing is arranged in the middle section of the transport table 1 to form a grinding channel, a movable rotary grinding head assembly is arranged on the top of the grinding housing, the rotary grinding head assembly includes a servo motor 7, a hydraulic rod 8, and a rotatable grinding head 9, a moving track 6 is arranged on the top of the grinding housing, the servo motor 7 is cooperatively installed on the moving track 6, the hydraulic rod 8 is connected to the grinding head 9 and is vertically arranged on the servo motor 7, the visual recognition module 3 is signal-connected to the rotary grinding head assembly, transmits the three-dimensional coordinates of the weld on the steel surface, and correspondingly controls the rotary grinding head assembly to act to perform fixed-point grinding on the weld on the steel surface; when a weld is detected on the surface of the steel, the industrial camera and the laser tracker identify the morphological characteristics of the weld and generate a three-dimensional coordinate signal of the weld on the steel surface, and transmit the three-dimensional coordinate signal to the rotary grinding head assembly, so that it controls the servo motor 7 to drive the grinding head 9 to move along the moving track 6 according to the three-dimensional coordinate signal of the weld on the steel surface, so as to realize the position correspondence between the grinding head 9 and the weld. Finally, the rotating grinding head 9 grinds the weld on the steel surface and processes the surfaces of the base metals on both sides of the weld to be inspected, grinds off impurities such as welding slag, spatter, concrete, and oil stains, and exposes the surface layer with metallic luster to avoid the influence of welding residual stress or oil stain impurities and cause misjudgment.

[0030] In this embodiment, the flushing mechanism 10 includes a flushing cavity and a waste water recovery tank 11. The flushing cavity is arranged in the rear section of the transport table 1 to form a flushing channel 12. The waste water recovery tank 11 is installed directly below the rear section of the transport table 1 and cooperates with the flushing cavity for waste water recovery. A multi-directional high-pressure nozzle group 13 is arranged on the top of the flushing cavity to perform high-pressure water flushing on the surface of the steel; the configured laser scanner and reflectivity analysis unit scan the surface of the steel. When oil stains or dirt are detected on the surface of the steel, a flushing signal is generated and transmitted to the flushing mechanism 10 to control the multi-directional high-pressure nozzle group 13 to start and perform high-pressure flushing on the surface of the steel to ensure that the surface of the steel is smooth and free of oil stains and other impurities before stress detection.

[0031] In this embodiment, the surface acoustic wave stress detection system 15 includes a detection platform, on which a dual-mode probe group 16 is arranged to perform stress detection on the surface of the steel after the pretreatment section; it also includes a data analysis module 17, which is configured with a crack feature database and a pattern recognition algorithm. The data analysis module 17 is signal-connected to the dual-mode probe group 16; finally, the steel after the pretreatment section is transported to the detection platform in the detection section, and the dual-mode probe group 16 on the detection platform performs stress scanning detection on the surface of the steel after the pretreatment section, and generates a steel stress detection defect identification signal according to the configured crack feature database and pattern recognition algorithm, and transmits it to the defect marking device for identification and recording.

[0032] In this embodiment, the dual-mode probe group 16 includes an X-ray stress gauge, which is an instrument used to measure the residual stress of metal components. This instrument can non-destructively measure the residual stress at a specified point and in a specified direction on the material surface in a short time, and has the function of measuring the magnitude and direction of the principal stress; common instrument models include μ-X360s portable X-ray residual stress gauge, X-350A X-ray stress gauge, etc.

[0033] In this embodiment, the defect marking device includes a programmable inkjet printer 18, which is installed on the detection platform and is configured with a color coding rule library, where a red mark indicates a structural defect and a yellow mark indicates a surface defect; the programmable inkjet printer 18 marks the unqualified steel according to the steel stress detection defect identification signal, where a red mark indicates a structural defect and a yellow mark indicates a surface defect, and marks the unqualified steel in stress detection, which is convenient for subsequent processing.

[0034] In this embodiment, a speed feedback device 19 is arranged on the transport table 1, which forms a closed-loop control with the surface detection mechanism 2, and the conveying speed is dynamically adjusted according to the detection result; the speed feedback device 19 adjusts the conveying speed of the transport table 1 in cooperation with the detection data of the surface detection mechanism 2. When a weld is detected on the surface of the steel, the speed of the transport table 1 in the grinding channel will be adjusted so that the rotary grinding head assembly can have enough time to grind the surfaces of the steel on both sides of the detected weld; when oil stains or dirt are detected on the surface of the steel, the speed of the transport table 1 in the flushing cavity will be adjusted so that the multi-directional high-pressure spray head group 13 can have enough time to perform high-pressure flushing on the surface of the steel.

[0035] In this embodiment, the speed feedback device 19 includes the Yaskawa inverter PG card speed feedback PG-X3: This is a speed feedback device 19 of the Yaskawa inverter, mainly used to provide the speed feedback function. This device has characteristics such as high resolution and high response frequency, and is suitable for various industrial applications; in this embodiment, the speed feedback device 19 adjusts the conveying speed of the conveying table 1 in cooperation with the detection data of the surface detection mechanism 2.

[0036] In this embodiment, the types of grinding heads 9 commonly used for grinding the surface of steel include grinding wheels, abrasive belts, vertical grinding wheels, and tungsten carbide grinding heads, etc.

[0037] In this embodiment, the programmable logic controller 20 includes common ones such as the Siemens PLC S7-300 series, Mitsubishi PLC Q series, Omron PLC CJ series, etc.

[0038] When the present invention is specifically implemented: The steel is placed on the conveying table 1 for transportation. First, the steel passes through the detection channel, and the visual recognition module 3 and the pollutant detection module 4 simultaneously detect and analyze the surface of the steel. The configured industrial camera and laser tracker scan the surface of the steel. When a weld is detected on the surface of the steel, the industrial camera and laser tracker identify the morphological characteristics of the weld and generate a three-dimensional coordinate signal of the weld on the surface of the steel, and transmit the three-dimensional coordinate signal to the rotary grinding head assembly. At the same time, the speed of the conveying table 1 in the grinding channel is adjusted so that it controls the servo motor 7 to drive the grinding head 9 to move along the moving track 6 according to the three-dimensional coordinate signal of the weld on the surface of the steel, so as to realize the position correspondence between the grinding head 9 and the weld, and the rotating grinding head 9 grinds the weld on the surface of the steel to expose the surface layer with metallic luster; the configured laser scanner and reflectivity analysis unit scan the surface of the steel. When oil stains or mud are detected on the surface of the steel, a flushing signal is generated and transmitted to the flushing mechanism 10, and the speed of the conveying table 1 in the flushing cavity is adjusted to start the multi-directional high-pressure nozzle group 13 to perform high-pressure flushing on the surface of the steel to ensure that the surface of the steel is smooth and free of impurities such as oil stains before stress detection; finally, the steel passing through the pretreatment section is transported to the detection platform in the detection section, and the dual-mode probe group 16 on the detection platform scans and detects the stress on the surface of the steel passing through the pretreatment section, and generates a steel stress detection defect recognition signal according to the configured crack feature database and pattern recognition algorithm, and transmits it to the defect marking device for marking and recording. The programmable inkjet printer 18 marks the unqualified steel according to the steel stress detection defect recognition signal, where the red mark indicates a structural defect and the yellow mark indicates a surface defect, and marks the unqualified steel for stress detection, which is convenient for subsequent processing.

[0039] It should be noted that in the description of the present invention, the meaning of "a plurality of" is two or more, unless otherwise specifically defined. In the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection. The circuits described in the present invention are all common circuits in the art, and other related components are all existing common components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] For those skilled in the art, it is obvious that the present invention patent is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention patent, the present invention patent can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention patent is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the same elements of the claims are intended to be included in the present invention patent. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An integrated equipment for steel surface treatment and stress detection, characterized in that: include: The equipment body comprises a transport platform, a pretreatment section and a detection section connected in sequence; A surface detection mechanism is integrated on the transport platform, and the surface detection mechanism is connected to the programmable controller signal to detect and analyze the surface of the steel during transportation; The pretreatment section includes a grinding mechanism and a flushing mechanism linked to the surface detection mechanism, wherein: When oil or dirt is detected on the steel surface, the flushing mechanism automatically starts and performs high-pressure flushing to avoid false detection; When it is detected that there is unevenness in the welding part of the steel surface, the grinding mechanism automatically starts and grinds the steel surfaces on both sides of the inspected weld; A surface acoustic wave stress detection system is provided at the end of the detection section. In the case of eliminating false detection caused by external factors, a defect marking device is configured to mark unqualified steel products.

2. The integrated equipment for steel surface treatment and stress detection according to claim 1, characterized in that: The surface detection mechanism forms a detection channel at the front section of the transport platform, and the surface detection mechanism includes: The visual recognition module is equipped with an industrial camera and a laser tracker to identify the morphological features of the weld and generate the three-dimensional coordinates of the weld on the steel surface; The pollutant detection module is equipped with a laser scanner and a reflectivity analysis unit to detect oil or dirt on the surface of steel.

3. The integrated equipment for steel surface treatment and stress detection according to claim 2, characterized in that: The grinding mechanism includes a grinding shell, which is arranged in the middle section of the transport platform to form a grinding channel. A movable rotating grinding head assembly is arranged on the top of the grinding shell. The rotating grinding head assembly includes a servo motor, a hydraulic rod, and a rotatable grinding head. A moving track is arranged on the top of the grinding shell. The servo motor is installed on the moving track. The hydraulic rod is connected to the grinding head and is vertically arranged on the servo motor. The visual recognition module is connected to the rotating grinding head assembly signal to transmit the three-dimensional coordinates of the weld on the steel surface, and the corresponding regulating rotating grinding head assembly is activated to grind the weld on the steel surface at a fixed point.

4. The integrated equipment for steel surface treatment and stress detection according to claim 1, characterized in that: The flushing mechanism includes a flushing cavity and a wastewater recovery tank. The flushing cavity is arranged at the rear section of the transport platform to form a flushing channel. The wastewater recovery tank is installed directly below the rear section of the transport platform and cooperates with the flushing cavity to recover wastewater. The top of the flushing cavity is arranged on a multi-directional high-pressure nozzle group to perform high-pressure water flushing toward the surface of the steel.

5. The integrated equipment for steel surface treatment and stress detection according to claim 1, characterized in that: The surface acoustic wave stress detection system comprises a detection platform, on which a dual-mode probe group is arranged to perform stress detection on the surface of steel that has passed through a pretreatment section.

6. The integrated equipment for steel surface treatment and stress detection according to claim 5, characterized in that: It also includes a data analysis module, which is equipped with a crack feature database and a pattern recognition algorithm. The data analysis module is connected to the dual-mode probe group signal.

7. The integrated equipment for steel surface treatment and stress detection according to claim 1, characterized in that: The defect marking device comprises a programmable inkjet printer, which is installed on the detection platform and is equipped with a color coding rule library, wherein a red mark indicates a structural defect and a yellow mark indicates a surface defect.

8. The integrated equipment for steel surface treatment and stress detection according to claim 1, characterized in that: The transport platform is provided with a speed feedback device, which forms a closed-loop control with the surface detection mechanism, and the transport speed is dynamically adjusted according to the detection result.

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