Self-maintenance system of crane power supply and receiving system

Abstract

The invention discloses a self-maintenance system of a crane power supply and receiving system, which comprises an image acquisition module for acquiring images of a power supply system and a power receiving system and a fault judgment module electrically connected with the image acquisition module, and the fault judgment module judges faults according to the images acquired by the image acquisition module. And the faults are graded according to the set fault grades. According to the self-maintenance system of the crane power supply and receiving system, a fault image and a fault position are combined, so that maintenance personnel can effectively and accurately master the state of field equipment, and the self-maintenance cleaning system is started by obtaining pictures of the power supply and receiving system and enabling feature extraction to reach a set threshold value; a fault locking technology and a post tracking and monitoring technology are applied, fault levels are set and sent to different types of maintenance personnel through the Internet of Things, closed-loop management is formed, and the safety and reliability of the power supply and receiving system can be effectively guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of power supply and reception of cranes, and in particular relates to a self-maintenance system of a power supply and reception system of a crane. Background Art

[0002] In metallurgical steelmaking production, cranes are mainly responsible for important tasks such as lifting molten iron and loading scrap steel into furnaces. Their driving power comes from the contact between the slide wire (power supply) and the slider (power receiving). The stability of the power supply and receiving system is the basis for ensuring the safe and efficient operation of the equipment.

[0003] At present, the inspection and maintenance of the crane power supply system mainly rely on the annual maintenance and shutdown intervals. The section incoming line switch cuts off the power supply. The maintenance personnel first climb over the railing to the unprotected part outside the railing, bend down and drag the air duct to blow the power supply and receiving system, and then go down to the suspended slide line, walk on the slide line to inspect and maintain it throughout the line. The safety risk is extremely high and the labor intensity is high. The inspector inspects the power receiving system according to the inspection cycle, and climbs down the ladder to the maintenance cage alone to inspect and confirm it at close range. Because the crane is in operation, the personnel are affected by inertia during the starting and braking process, and there are safety risks such as electric shock. There is a lot of dust and iron oxide in the steel area, which causes accumulation above the power supply system, causing poor contact and sparks in the power receiving system.

[0004] Since the production line operates 24 hours a day, the operating status of the power supply and receiving systems cannot be controlled at all times. Minor hidden dangers may develop into major accidents, causing unnecessary economic losses.

[0005] For example, the patent document with publication number CN115631466A discloses a method and system for identifying and detecting overhead power transmission lines. By comparing and analyzing the monitoring image with the initial image, the abnormal area is located and distributed to different maintenance personnel. Since the fault image cannot be uploaded to the cloud, it is easy to cause misjudgment, and the maintenance personnel cannot accurately control the fault degradation trend, and small hidden dangers cause major accidents; the fault locking technology and post-processing fault location tracking monitoring technology are not adopted, and there is no key monitoring of the fault location and prevention of repeated accidents; there is no self-maintenance function.

[0006] For example, the patent document with publication number CN116128879A discloses a lightweight transmission line defect detection method and device, which uses drone technology to inspect the line, and judges defects through feature extraction and sends them to the inspection control center. The use of drone technology is limited when there is insufficient space, and it cannot implement fault locking and continuous tracking monitoring of abnormal parts. It does not have the function of focusing on monitoring the fault location and preventing the occurrence of repeated accidents; it does not have a self-maintenance function. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a self-maintenance system for a crane power supply and receiving system, the purpose of which is to achieve self-maintenance of the crane power supply and receiving system.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a self-maintenance system for a crane power supply and receiving system, including an image acquisition module for acquiring images of the power supply system and the power receiving system and a fault judgment module electrically connected to the image acquisition module, the fault judgment module judges the fault according to the image acquired by the image acquisition module, and grades the fault according to the set fault level.

[0009] The image acquisition module includes an industrial camera, and the angle of the industrial camera is adjustable.

[0010] The industrial camera is arranged on an insulating vehicle-mounted bracket, and the insulating vehicle-mounted bracket is located at a power receiving area of ​​the crane.

[0011] The fault judgment module includes an industrial computer, which is data-connected to the image acquisition module and is located in the electrical compartment of the crane.

[0012] The industrial computer is equipped with a display and a voice system. The display is configured to display a fault image and a fault location, and the voice system is configured to issue voice prompt information.

[0013] The industrial computer classifies the faults according to the set level and divides them into three levels, namely, slight fault, moderate fault and severe fault.

[0014] The image acquisition module acquires images in a real-time data acquisition manner. The movement of the crane trolley triggers the image acquisition module to acquire images, thereby monitoring the working status of the power supply system in real time.

[0015] The image acquisition module acquires images in an intermittent data acquisition manner. The image acquisition module acquires images at set time intervals. When conditions are met, the crane trolley moves, triggering the image acquisition module to acquire images.

[0016] The image acquisition module acquires images in a memory data acquisition manner. When the image acquisition module has completed the data acquisition of the power supply system section within the set time, the image will not be acquired repeatedly when passing through the power supply system section. It can be acquired again when the set conditions are met.

[0017] The self-maintenance system of the crane power supply and receiving system also includes a self-cleaning system for cleaning the surface of the power supply and receiving system.

[0018] The self-maintenance system of the crane power supply and receiving system of the present invention utilizes a combination of fault images and fault locations to enable maintenance personnel to effectively and accurately control the status of on-site equipment. By acquiring the power supply and receiving system screen and extracting features to reach a set threshold, the self-maintenance cleaning system is started. By utilizing fault locking technology and post-fault tracking and monitoring technology, the fault level is set and sent to different types of maintenance personnel through the Internet of Things, thus forming a closed-loop management system, which can effectively ensure the safety and reliability of the power supply and receiving system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] This specification includes the following drawings, which show the following contents:

[0020] Figure 1 It is a schematic diagram of the layout of industrial cameras;

[0021] Figure 2 It is a schematic diagram of the layout of the power supply system;

[0022] Figure 3 It is a schematic diagram of the arrangement of the self-cleaning system;

[0023] The markings in the figure are:

[0024] 11. Power supply system; 12. Power indicator light; 13. Gray busbar; 14. Antenna box on the vehicle body; 15. Protocol converter; 16. PLC; 17. Industrial computer; 18. Insulator; 19. Decoder; 21. Insulated vehicle bracket; 22. Power receiving system; 24. Industrial camera; 31. Insulated vehicle bracket; 32. Self-cleaning system; 33. Cleaning system control box; 34. Display; 35. Internet of Things module; 36. Voice system. DETAILED DESCRIPTION

[0025] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0026] like Figures 1 to 3 As shown, the present invention provides a self-maintenance system for a power supply and receiving system of a crane, including an image acquisition module for acquiring images of the power supply system and the power receiving system and a fault judgment module electrically connected to the image acquisition module. The fault judgment module judges the fault according to the image acquired by the image acquisition module and grades the fault according to the set fault level.

[0027] Specifically, the self-maintenance system of the crane power supply and receiving system provided by the present invention includes obtaining crane position data, a self-cleaning system, a crane power supply and receiving system screen, an industrial camera, an Internet of Things module, etc. By obtaining the power supply and receiving system screen, the feature extraction reaches the set threshold to start the self-maintenance cleaning system, and uses the fault locking tracking technology and the fault location tracking monitoring technology to set the fault level and send it to different types of maintenance personnel through the Internet of Things to form a closed-loop management. Effectively ensure the safety and reliability of the power supply and receiving system.

[0028] like Figure 2 As shown, the power supply system 11 provides operating power for the crane, the power indicator light 12 is used to preliminarily judge whether the three-phase power supply has power, is short of phase, etc., the insulator 18 insulates the power supply system from the factory building, and the insulator 18 also supports and fixes the power supply system 11. A Gray busbar 13 is installed at the railing of the crane trolley platform, and the length of the Gray busbar 13 is equal to that of the power supply system 11. The antenna box on the body is installed at the end beam of the crane body, and its installation height is adjusted to the position suitable for the Gray busbar 13. The decoder 19 converts the Gray code of the Gray busbar 13 sensed by the antenna box 14 on the body into position data, which is converted by the protocol converter 15 and transmitted to the PLC 16 for use by the industrial computer 17 to determine the fault location of the power supply system 11.

[0029] like Figure 1 As shown, the image acquisition module includes an industrial camera 24, and the angle of the industrial camera 24 is adjustable. The industrial camera 24 is set on an insulating vehicle-mounted bracket 21, and the insulating vehicle-mounted bracket 21 is located in the power receiving area of ​​the crane. An insulating vehicle-mounted bracket 21 is installed at a suitable position in the power receiving area on the crane, and an industrial camera 24 is installed on the insulating vehicle-mounted bracket 21. The industrial camera 24 collects images of the power supply system 11 and the power receiving system 22, and sends the collected images to the trained (deep learning of various types of faults, hidden dangers, etc., and marking and adaptive error-prone images) industrial control computer 17 for analysis and judgment.

[0030] like Figure 1 As shown, the fault judgment module includes an industrial computer 17, which is electrically connected to an industrial camera 24. The industrial computer 17 is installed in the electrical compartment of the crane, and data, fault information, etc. are uploaded to the cloud through the Internet of Things module 35.

[0031] The industrial computer 17 is equipped with a display 34 and a voice system 36, which are installed in the upper right corner of the operating room to remind the operator to confirm the fault status and complete the closed-loop management. The display 34 is configured to display the fault screen and the fault location, and the voice system 36 is configured to issue voice prompt information.

[0032] Inspection of the power supply system: When the crane trolley is moving, the industrial computer 17 obtains the position data of the trolley body, and the industrial camera 24 collects the image data of the power supply system 11. The image acquisition module collects images in three ways, which are as follows:

[0033] Method 1: The image acquisition module acquires images in a real-time data acquisition mode. The movement of the crane trolley triggers the image acquisition module to acquire images and monitor the working status of the power supply system in real time.

[0034] Method 2: The image acquisition module can collect images in an intermittent data acquisition manner. The image acquisition module collects images at set time intervals. When the conditions are met, the movement of the crane trolley triggers the image acquisition module to collect images. This acquisition method can not only meet production needs, but also reduce production costs accordingly.

[0035] Method three: The image acquisition module can also acquire images in a memory data acquisition method. When the image acquisition module has completed the data acquisition of the power supply system section within the set time, the image will not be acquired repeatedly when passing through the power supply system section. It can be acquired again when the set conditions are met.

[0036] The collected images are sent to the industrial computer 17 for identification and judgment. When an abnormal fault occurs (insulator cracks, loose screws, etc.), the industrial computer 17 classifies the fault according to the set level and divides it into three levels, namely minor fault, moderate fault and severe fault.

[0037] When a minor fault occurs (such as loose screws, etc.), the display 34 in the operation room displays the fault picture and fault location to the maintenance personnel R1. The maintenance personnel R1 needs to confirm and respond to the fault within the specified time and upload the processing opinions on the terminal. The fault locking technology is adopted. Every time the industrial camera 24 passes the fault location where a minor fault occurs, the image of the fault location is extracted, and the latest fault image is uploaded to the display or the cloud. The development trend of the fault is controlled in real time. If the deterioration trend expands, the fault level will increase by one level, triggering the voice system 36 to issue a voice reminder, and the fault location and image data will be sent to the cloud through the Internet of Things module 35, reminding the on-duty personnel R2 to confirm and respond on site. If it cannot be handled in time, it will be transferred to the professional maintenance personnel R3. After confirmation, the professional maintenance personnel R3 will give professional processing opinions.

[0038] When a moderate fault occurs (such as an insulator crack, etc.), the display 34 in the operation room displays the fault image and the fault location. The operator monitors the degradation trend. The on-duty personnel R2 receives the alarm information through the cloud, confirms and responds to the fault within the set time, and uploads the processing opinions on the terminal. If the fault cannot be processed or the degradation trend expands during the monitoring process, the fault level will be increased by one level. After receiving the alarm information, the professional maintenance personnel R3 needs to go to the site for confirmation and processing. After the processing is completed, the processed image collected by the industrial camera 24 is uploaded to the cloud. The maintenance personnel R1, the on-duty personnel R2, and the professional maintenance personnel R3 jointly complete the confirmation to form a closed-loop management. The fault location key monitoring technology is adopted, and the key images of the location can be extracted for a period of time to prevent repeated accidents.

[0039] When a serious fault occurs (such as insulator flesh falling off, etc.), the voice system 36 in the operation room sends out an alarm message, and the on-duty personnel R2 and professional maintenance personnel R3 receive the alarm message at the same time, and immediately go to the scene to confirm the fault situation and formulate a plan for emergency treatment.

[0040] If there is an application for maintenance in the terminal processing opinion, the dispatcher R4 receives an application for maintenance task. The dispatcher can reasonably arrange the production group method and use the production gap to arrange maintenance processing to effectively ensure smooth and orderly production.

[0041] After completing the set power supply system inspection, the power receiving system can be inspected according to the setting requirements. The industrial camera 24 is adjusted to a suitable angle to extract the image of the power receiving system and analyze and judge it. There are three types of image extraction analysis and judgment:

[0042] Type 1: judge the wear amount and contact surface of the power receiving body; when the wear amount of the power receiving body reaches the set threshold of the original thickness, the professional maintenance personnel R3 terminal receives an early warning message, the wear amount of the power receiving body of phase A, B or C reaches the early warning value, please check and confirm; the professional maintenance personnel R3 is required to confirm and reply to the early warning message within the set working day. If the reply is that it does not need to be replaced and can be used for a short period of time, this phase of the power receiving device will be automatically listed as a key monitoring object to shorten the image extraction cycle and ensure the reliable operation of the power receiving body; if the reply is planned for maintenance and replacement, the control department terminal receives an application for maintenance plan, and the part reasonably arranges maintenance according to the production task to eliminate equipment hazards.

[0043] When it is extracted that the contact surface between the power receiving body and the power supply system 11 is smaller than the set threshold, the professional maintenance personnel R3 receives an early warning message, requiring the professional maintenance personnel R3 to confirm and reply to the early warning message within the set working days. If adjustment is required, the terminal of the management and control department also receives an application for maintenance plan and arranges maintenance reasonably according to production tasks.

[0044] Type 2: Judgment on loose connection screws. When it is detected that the connection screws of the power receiving system are loose, the display 34 in the operation room will display the picture of the loose screws, reminding the operator R1 that the power receiving system is abnormal. At the same time, the on-duty personnel R2 needs to go to the site for confirmation and reply. If it cannot be handled in time, the loose position will be automatically listed as a key monitoring object. The display 34 will display the monitoring at all times. The professional maintenance personnel R3 needs to go to the site for confirmation and reply after receiving an early warning. After the processing is completed, the picture will be extracted for a period of time according to the set time interval to prevent accidents caused by repetitive screw loosening.

[0045] Type three, judgment on sparking of the power receiving system 22; when sparking is detected in the power receiving system 22, the cause is first determined based on the extracted screen, such as loose screws, insufficient pressure on the power receiving body, presence of dust, etc. When the system determines that the sparking is caused by loose screws, the screen of the sparking area is automatically uploaded to the display 34 in the operation room, and the voice system 36 reminds the operator to confirm and reply. If it is confirmed, the type two processing method is executed. If not, the data is sent to the cloud through the Internet of Things module 35 to notify the on-duty personnel R2 to confirm and reply; when the system determines that the sparking is caused by insufficient pressure on the power receiving body, the professional maintenance personnel R3 receives an early warning and needs to go to the site for confirmation and generate a maintenance plan. The control department arranges reasonable maintenance according to the production tasks and adjusts the spring pressure to the standard value; when the system determines that the sparking is caused by dust, the self-cleaning system operation process is executed.

[0046] like Figure 3 As shown, the self-maintenance system of the power supply and receiving system of the crane of the present invention also includes a self-cleaning system 32 for cleaning the surface of the power supply and receiving system. Another insulating vehicle-mounted bracket 31 is installed on the crane near the power receiving area, and the self-cleaning system 32 is arranged on the insulating vehicle-mounted bracket 31. The image of the power supply and receiving system is collected by the industrial camera 24, and then the industrial computer 17 analyzes and processes the image collected by the industrial camera 24 to determine the dust level, and then the industrial computer 17 outputs data to the PLC 16, and the PLC 16 controls the cleaning system control box 33 to drive the self-cleaning system 32 to operate at different powers.

[0047] The industrial camera 24 extracts images of the power supply and receiving system for inspection and simultaneously extracts images of dust on its surface. The dust is divided into three levels according to the extracted images, namely, light, medium and heavy. Self-cleaning systems 32 of different powers are activated at different levels. A combination of positive and negative pressure is used to thoroughly remove iron oxide, dust, etc. on the surface of the power supply and receiving system, which greatly reduces the maintenance risk and labor intensity of the operation.

[0048] When collecting images of the power supply and receiving system, when it is determined that the dust on the surface of the power supply and receiving system has reached a corresponding level, it is necessary to determine whether there are any shaped debris (such as screws, nuts, iron blocks) on the surface of the power supply and receiving system before the self-cleaning system 32 operates. When it is determined that there are shaped debris on the surface of the power supply and receiving system, the self-cleaning system 32 is prohibited from operating to prevent falling objects from injuring people on the ground and the occurrence of phase-to-phase short circuits and grounding faults in the power supply and receiving system. The system automatically uploads the image and position to the operating room display 34 to remind the operating personnel to work safely. At the same time, the on-duty personnel R2 receives the alarm information and needs to go to the site to confirm and handle it.

[0049] When the system determines that there is no shaped debris on the surface of the power supply and receiving system, the self-cleaning system 32 is started according to the determination level. When the dust is determined to be of a light level, the self-cleaning system 32 operates in a negative pressure and low power state to clean the power supply and receiving system; when the dust is determined to be of a medium level, the self-cleaning system 32 operates in a negative pressure and high power state to clean the power supply and receiving system; when the dust is determined to be of a heavy level, the self-cleaning system 32 uses a combination of positive and negative pressures and a mixed use of large and small powers to clean the power supply and receiving system.

[0050] The self-maintenance system of the above-mentioned crane power supply and receiving system includes obtaining crane position data, self-cleaning system, crane power supply and receiving system screen, industrial camera, Internet of Things module, etc. By obtaining the power supply and receiving system screen, feature extraction reaches the set threshold to start the self-maintenance cleaning system, use fault locking technology and post-event tracking monitoring technology, set the fault level and send it to different types of maintenance personnel through the Internet of Things to form a closed-loop management. Effectively ensure the safety and reliability of the power supply and receiving system.

[0051] From the implementation point of view, the present invention utilizes the method of combining fault images with fault locations, so that maintenance personnel can effectively and accurately grasp the status of on-site equipment, and adopts three different collection methods and three fault classifications, etc., and has wider practical applications; the self-cleaning system is equipped with different power, positive and negative pressure combined operation modes, which greatly reduces the maintenance risk, reduces the labor intensity of operations, makes it more in line with on-site needs, and has a high promotion and application value.

[0052] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. The self-maintenance system of the crane power supply and receiving system is characterized by: It includes an image acquisition module for acquiring images of the power supply system and the power receiving system and a fault judgment module electrically connected to the image acquisition module. The fault judgment module judges the fault according to the image acquired by the image acquisition module and grades the fault according to the set fault level.

2. The self-maintenance system of the crane power supply and receiving system according to claim 1, characterized in that: The image acquisition module includes an industrial camera, and the angle of the industrial camera is adjustable.

3. The self-maintenance system of the crane power supply and receiving system according to claim 2, characterized in that: The industrial camera is arranged on an insulating vehicle-mounted bracket, and the insulating vehicle-mounted bracket is located at a power receiving area of ​​the crane.

4. The self-maintenance system of the crane power supply and receiving system according to any one of claims 1 to 3, characterized in that: The fault judgment module includes an industrial computer, which is data-connected to the image acquisition module and is located in the electrical compartment of the crane.

5. The self-maintenance system of the crane power supply and receiving system according to claim 4, characterized in that: The industrial computer is equipped with a display and a voice system. The display is configured to display a fault image and a fault location, and the voice system is configured to issue voice prompt information.

6. The self-maintenance system of the crane power supply and receiving system according to claim 4, characterized in that: The industrial computer classifies the faults according to the set level and divides them into three levels, namely, slight fault, moderate fault and severe fault.

7. The self-maintenance system of the crane power supply and receiving system according to claim 4, characterized in that: The image acquisition module acquires images in a real-time data acquisition manner. The movement of the crane trolley triggers the image acquisition module to acquire images, thereby monitoring the working status of the power supply system in real time.

8. The self-maintenance system of the crane power supply and receiving system according to claim 4, characterized in that: The image acquisition module acquires images in an intermittent data acquisition manner. The image acquisition module acquires images at set time intervals. When conditions are met, the crane trolley moves, triggering the image acquisition module to acquire images.

9. The self-maintenance system of the crane power supply and receiving system according to claim 4, characterized in that: The image acquisition module acquires images in a memory data acquisition manner. When the image acquisition module has completed the data acquisition of the power supply system section within the set time, the image will not be acquired repeatedly when passing through the power supply system section. It can be acquired again when the set conditions are met.

10. The self-maintenance system for the crane power supply and receiving system according to any one of claims 1 to 9, characterized in that: It also includes a self-cleaning system for cleaning the surface of the power supply and receiving system.

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