A method for evaluating the safety performance of a metallurgical bridge crane

Abstract

The application discloses a metallurgical bridge crane safety performance evaluation method, comprising: applying current to the steel wire rope; collecting real-time electromagnetic field data of each steel wire rope; comparing the real-time electromagnetic field data with standard electromagnetic field data determined in advance to obtain corresponding comparison results; and determining the safety performance of the steel wire rope according to the comparison results. The application applies current to each steel wire rope and detects electromagnetic field data generated under the action of the current, obtains an evaluation result of whether the steel wire rope has defects such as wear and deformation in actual use according to the electromagnetic field data, realizes real-time detection of each steel wire rope, and the evaluation result is real and reliable, thereby improving the safety of metallurgical production.

Description

Technical Field

[0001] The present application relates to the technical field of industrial lifting equipment, and in particular to a method for evaluating the safety performance of a metallurgical bridge crane. Background Art

[0002] Cranes are essential equipment in the metallurgical industry, performing the task of lifting and moving a variety of heavy equipment and products. Therefore, their proper operation is crucial to the smooth progress of metallurgical operations. As a commonly used crane type in the metallurgical industry, monitoring the safety performance of bridge cranes is a key aspect of daily crane operations, and indeed, of metallurgical operations.

[0003] Because bridge cranes used in the metallurgical industry have a heavy load capacity, often exceeding hundreds of tons, they utilize a significant number of wire ropes. As a vulnerable component in cranes, wire rope maintenance is crucial. Crane components typically undergo regular inspection and maintenance to ensure safety during daily use. However, regular maintenance cannot completely prevent production accidents. Various uncertainties during operation can magnify minor defects in the wire rope, leading to major accidents. Therefore, real-time monitoring and evaluation of the wire rope's condition is essential during operation.

[0004] However, due to the large number of wire ropes, manual monitoring and evaluation alone cannot achieve timely and accurate results. Therefore, computer-based automated monitoring and evaluation technology has emerged. Typically, image processing technology is used to monitor wire ropes. By capturing images of wire ropes in daily use, the wire ropes are analyzed for defects, alerting specialized personnel to address minor defects before they become magnified. However, the high temperatures in metallurgical workshops, the position of wire ropes during operation, and the numerous equipment in metallurgical workshops pose significant challenges to accurately and efficiently extracting wire rope information from images. This results in low reliability of wire rope safety performance evaluation results based on image technology. Summary of the Invention

[0005] An embodiment of the present application provides a method for evaluating the safety performance of a metallurgical bridge crane, which is used to solve the problem of low reliability of wire rope safety performance evaluation results based on image technology in the prior art.

[0006] On the one hand, an embodiment of the present application provides a method for evaluating the safety performance of a metallurgical bridge crane, comprising:

[0007] Applying current to the wire rope;

[0008] Collect real-time electromagnetic field data of each wire rope;

[0009] Compare the real-time electromagnetic field data with pre-measured standard electromagnetic field data to obtain corresponding comparison results;

[0010] The safety performance of the wire rope is determined based on the comparison results.

[0011] The safety performance evaluation method for a metallurgical bridge crane in this application has the following advantages:

[0012] By applying current to each steel wire rope and detecting the electromagnetic field data generated by the current, an evaluation result is obtained based on the electromagnetic field data to determine whether the steel wire rope has defects such as wear and deformation in actual use. This not only achieves real-time detection of each steel wire rope, but also makes the evaluation results true and reliable, thereby improving the safety of metallurgical production. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 A flow chart of a method for evaluating the safety performance of a metallurgical bridge crane provided in an embodiment of the present application;

[0015] Figure 2 A schematic diagram of a portion of the structure of a metallurgical bridge crane provided in an embodiment of the present application;

[0016] Figure 3 A schematic longitudinal cross-sectional view of an electromagnetic detection device provided in an embodiment of the present application;

[0017] Figure 4 This is a schematic longitudinal cross-sectional view of the current applying device provided in an embodiment of the present application.

[0018] Description of the accompanying drawings: 100 - electromagnetic detection device, 110 - electromagnetic detection hole, 120 - electromagnetic field detection unit, 200 - current application device, 210 - current application hole, 220 - current application unit, 300 - driving device, 400 - suspension rod. DETAILED DESCRIPTION

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

[0020] Figure 1 This is a flow chart of a method for evaluating the safety performance of a metallurgical bridge crane provided in an embodiment of the present application. This embodiment of the present application provides a method for evaluating the safety performance of a metallurgical bridge crane, comprising:

[0021] S100, applying current to the wire rope.

[0022] For example, Figure 2 and 4 As shown, current can be applied to the wire rope through the current applying device 200, which is arranged at the bottom of the driving device 300 and / or the top of the boom 400. A plurality of current applying holes 210 are arranged inside the current applying device 200, and a current applying unit 220 is provided in each current applying hole 210. The current applying unit 220 is energized and in contact with the wire rope located in the current applying hole 210.

[0023] In one embodiment, the current application unit 220 can be a conductive layer, for example, a metal sheet or a metal ring, and the conductive layer is arranged on the inner wall of the current application hole 210. When the steel wire rope is in the current application hole 210, the steel wire rope contacts the metal sheet to introduce the current in the metal sheet into the steel wire rope. In another embodiment, the current application unit 220 includes a contact ball and a conductive spring. The contact ball is rotatably arranged on the inner wall of the current application hole 210, and the conductive spring is arranged inside the current application device 200, and one end of the conductive spring is connected to the power supply, and the other end is in sliding contact with the contact ball. When the steel wire rope is inside the current application hole 210, the metal contact ball contacts the steel wire rope, thereby transmitting the current introduced by the conductive spring to the steel wire rope.

[0024] It should be understood that the current applied by the current applying unit 220 should be relatively small, usually less than tens of milliamperes, and preferably uses alternating current, which can not only ensure that the transmission of current will not damage personnel and other equipment, but also ensure that an alternating electromagnetic field is generated in the space near the wire rope.

[0025] Furthermore, since the wire rope will shake during use, causing its position in the current application hole 210 to change, in order to ensure that the wire rope and the current application unit 220 can also be in close contact under such changes, an elastic member is also provided between the current application unit 220 and the current application hole 210. Under the action of the elastic member, the current application unit 220 can move in the current application hole 210 as the wire rope moves, thereby ensuring the stability of the contact between the current application unit 220 and the wire rope.

[0026] S110, collecting real-time electromagnetic field data of each steel wire rope.

[0027] For example, Figure 3 As shown, the real-time electromagnetic field data of each steel wire rope can be collected by the electromagnetic detection device 100. The electromagnetic detection device 100 is arranged at the bottom of the driving device 300 and / or the top of the suspension rod 400. A plurality of electromagnetic detection holes 110 are arranged inside the electromagnetic detection device 100. An electromagnetic field detection unit 120 is provided in each electromagnetic detection hole 110. The electromagnetic field detection unit 120 is used to collect the real-time electromagnetic field data of the steel wire rope located in the electromagnetic detection hole 110.

[0028] The electromagnetic field detection unit 120 can use an electric field or magnetic field sensing component to detect the electromagnetic field data generated by the steel wire rope after it is energized by surrounding it on the outside of the steel wire rope. In an embodiment of the present application, the electromagnetic field detection unit 120 is provided with an insulating contact layer on the side close to the axis of the electromagnetic detection hole 110. The inner diameter formed by the insulating contact layer itself is equivalent to the diameter of the steel wire rope. Therefore, after the steel wire rope passes through the insulating contact layer, the electromagnetic field detection unit 120 located outside the insulating contact layer can always remain coaxial with the steel wire rope, thereby ensuring the accuracy of the electromagnetic field data obtained by detection. It should be understood that since the steel wire rope needs to slide inside the insulating contact layer, the insulating contact layer needs to have strong wear resistance in addition to having insulation properties.

[0029] Furthermore, since the steel wire rope will shake during use, causing its position in the electromagnetic detection hole 110 to change, in order to ensure that the steel wire rope and the insulating contact layer do not have excessive friction under such changes, resulting in a reduction in the life of the insulating contact layer, an elastic member is also provided between the electromagnetic field detection unit 120 and the electromagnetic detection hole 110. Under the action of this elastic member, the electromagnetic field detection unit 120 and the insulating contact layer can move in the electromagnetic detection hole 110 as the steel wire rope moves, thereby ensuring that the insulating contact layer and the steel wire rope are always in a suitable pressure state.

[0030] S120, comparing the real-time electromagnetic field data with pre-measured standard electromagnetic field data to obtain corresponding comparison results.

[0031] Exemplarily, the standard electromagnetic field data is obtained when the wire rope is first used. Specifically, the method for obtaining the standard electromagnetic field data includes: obtaining standard weight data of a standard object to be hoisted; obtaining standard electromagnetic field data detected when hoisting the standard object; establishing a mapping relationship between the standard weight data and the standard electromagnetic field data; establishing a mapping relationship table for the mapping relationships generated under multiple standard weight data; and in subsequent hoisting operations, first obtaining the real-time weight data of the hoisted object, and then obtaining the standard electromagnetic field data corresponding to the real-time weight data from the mapping relationship table.

[0032] Furthermore, the rotation angle data of the motor in the drive device 300 can be obtained, and then a mapping relationship can be established between the standard electromagnetic field data and the rotation angle data detected under different standard weight data, further improving the correlation between the data. In subsequent use, the real-time electromagnetic field data under different rotation angle data can be detected and then compared with the standard electromagnetic field data at the corresponding rotation angle under the corresponding weight data.

[0033] S130, determining the safety performance of the wire rope according to the comparison result.

[0034] For example, when comparing real-time electromagnetic field data and standard electromagnetic field data, the difference between the real-time electromagnetic field data and the standard electromagnetic field data can be calculated, and the difference can be compared with the set data threshold. If the difference exceeds the set threshold, an evaluation result that there is a safety hazard in the wire rope can be obtained. After obtaining the evaluation result, the production personnel can be reminded by means of sound and light alarms.

[0035] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0036] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A method for evaluating the safety performance of a metallurgical bridge crane, characterized in that: include: Applying current to the wire rope; Collect real-time electromagnetic field data of each wire rope; Comparing the real-time electromagnetic field data with pre-measured standard electromagnetic field data to obtain corresponding comparison results; determining the safety performance of the steel wire rope according to the comparison result; Wherein, current is applied to the steel wire rope by a current applying device (200), the current applying device (200) is arranged at the bottom of the driving device (300) and / or the top of the suspension rod (400), a plurality of current applying holes (210) are arranged inside the current applying device (200), and a current applying unit (220) is arranged in each of the current applying holes (210), and the current applying unit (220) is energized and in contact with the steel wire rope located in the current applying hole (210); The current applying unit (220) is a conductive layer provided on the inner wall of the current applying hole (210); The current applying unit (220) comprises a contact ball and a conductive spring, wherein the contact ball is rotatably arranged on the inner wall of the current applying hole (210), and the conductive spring is arranged inside the current applying device (200), and one end of the conductive spring is connected to a power source, and the other end is in sliding contact with the contact ball.

2. A metallurgical bridge crane safety performance evaluation method according to claim 1, characterized in that: The standard electromagnetic field data is obtained by testing the wire rope when it is used for the first time.

3. A metallurgical bridge crane safety performance evaluation method according to claim 2, characterized in that: The method for obtaining the standard electromagnetic field data includes: Obtain standard weight data for hoisting standard items; Obtain standard electromagnetic field data detected when hoisting standard objects; Establishing a mapping relationship between the standard weight data and the standard electromagnetic field data; Establishing a mapping relationship table for the mapping relationships generated under the plurality of standard weight data; In the subsequent hoisting operation, the real-time weight data of the hoisted object is first obtained, and then the standard electromagnetic field data corresponding to the real-time weight data is obtained from the mapping relationship table.

4. A metallurgical bridge crane safety performance evaluation method according to claim 1, characterized in that: Real-time electromagnetic field data of each steel wire rope is collected by an electromagnetic detection device (100), wherein the electromagnetic detection device (100) is arranged at the bottom of a driving device (300) and / or the top of a suspension rod (400), and a plurality of electromagnetic detection holes (110) are arranged inside the electromagnetic detection device (100), and an electromagnetic field detection unit (120) is arranged in each of the electromagnetic detection holes (110), and the electromagnetic field detection unit (120) is used to collect real-time electromagnetic field data of the steel wire rope located in the electromagnetic detection hole (110).

5. A metallurgical bridge crane safety performance evaluation method according to claim 4, characterized in that: The electromagnetic field detection unit (120) is provided with an insulating contact layer on a side surface close to the axis of the electromagnetic detection hole (110).

6. A metallurgical bridge crane safety performance evaluation method according to claim 4, characterized in that: An elastic member is provided between the electromagnetic field detection unit (120) and the electromagnetic detection hole (110).

7. A method for evaluating the safety performance of a metallurgical bridge crane according to claim 1, characterized in that: An elastic member is provided between the current applying unit (220) and the current applying hole (210).

Images