Determination method for falling prevention of oxygen lance of steelmaking converter and oxygen lance falling prevention clamping mechanism
By acquiring the tension data of the oxygen lance lifting wire rope, determining its status, and generating a clamping brake command, the problem of jamming and breakage of the oxygen lance anti-fall device was solved by using a cam assembly and spring assembly design, thus achieving stable operation and safe production of the oxygen lance.
Patent Information
- Application Number
- CN202511662473.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-01-09
AI Technical Summary
Existing oxygen lance fall prevention devices are prone to problems such as trolley jamming, wire rope breakage, and flimsy structure during use, affecting production flow and safety. Furthermore, the dust lubricant increases the difficulty of fall prevention.
By acquiring the tension data of the wire rope, determining its slack or broken state, generating a brake closing command, and controlling the oxygen lance anti-fall clamping mechanism to perform clamping and braking operations on the guide rail, including the design of the cam assembly, connecting rod assembly, and spring assembly, the stable lifting and lowering of the oxygen lance is ensured.
It improved production flow, reduced the probability of wire rope breakage, decreased oxygen lance fall accidents, and ensured the long-term stable operation and safety of the oxygen lance.
Smart Images
Figure CN121294781A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of converter steelmaking, and particularly relates to a determination method for preventing a converter oxygen lance from falling and an oxygen lance anti-falling clamping mechanism. BACKGROUND
[0002] At present, due to the particularity of steelmaking, the oxygen lance device is one of the important online devices in the steelmaking workshop, and is required to have high reliability and safety. The oxygen lance lifting device is one of the key devices of the converter. If the oxygen lance device fails in the production process, it will directly affect the normal operation of the converter steelmaking. The most serious problem is the falling of the oxygen lance. Not only does it cause great damage to the equipment itself and huge economic losses, but more importantly, once the oxygen lance falls, it is difficult to recover in a short time, which greatly affects the continuous and stable production of steelmaking. The converter faces a long time of shutdown, the production efficiency cannot be guaranteed, the output is reduced, which definitely causes greater economic losses, and the personal safety cannot be guaranteed. Once the oxygen lance falls into the converter being smelted, the molten steel splashes or even explodes, which directly threatens the personal safety of the entire workshop.
[0003] However, the commonly used oxygen lance anti-falling device at present is a wedge-shaped block anti-falling brake device arranged on the oxygen lance lifting trolley. Specifically, a wedge is inserted between the oxygen lance trolley and the guide rail to brake the downward sliding of the oxygen lance trolley, so as to achieve the purpose of preventing falling. However, in actual use, the tightness of the wedge cannot be measured, controlled and adjusted. If it is too tight, the trolley will be stuck in the normal smelting process, affecting the smoothness of production. When the oxygen lance or lifting platform trolley is stuck, the brake closing time is delayed, the steel wire rope is loosened, and once the oxygen lance or lifting platform trolley continues to descend, a free-falling motion is formed, which causes a great impact on the hoisting system and causes the steel wire rope to break. If it is too loose, the oxygen lance trolley cannot be effectively braked, the structure is thin, the reliability of the work cannot be guaranteed, and the dust generated in the steelmaking process also acts as a lubricant, which further increases the difficulty of the wedge device in achieving the anti-falling function. SUMMARY
[0004] The present application provides a determination method for preventing a converter oxygen lance from falling and an oxygen lance anti-falling clamping mechanism. The embodiments provided by the present application solve the technical problems in the prior art that the stuck trolley affects the smoothness of production, causes the steel wire rope to break, the structure is thin, the reliability of the work cannot be guaranteed, and the difficulty of the anti-falling function is increased. The embodiments provided by the present application improve the smoothness of production when the oxygen lance platform trolley is stuck, reduce the probability of the steel wire rope breaking, reduce the occurrence of serious production accidents caused by the falling of the converter oxygen lance, guarantee the long-term stable operation of the oxygen lance, and improve the safety of the operation.
[0005] In a first aspect, the embodiments of the present application provide a method for determining the anti-falling of an oxygen lance in a steelmaking converter. The method is applied to an anti-falling clamping mechanism of the oxygen lance, which includes a cam assembly, a connecting rod assembly, and a spring assembly. The spring assembly is connected to the cam assembly through the connecting rod assembly. The method includes: obtaining tension data of a steel wire rope for controlling the lifting of the oxygen lance; determining whether the steel wire rope is in a slack state or a broken state based on the tension data; if the steel wire rope is in the slack state or the broken state, generating a brake closing instruction for a guide rail on an oxygen lance trolley, wherein the oxygen lance trolley represents a movable mechanical platform on which the oxygen lance and the anti-falling clamping mechanism of the oxygen lance are installed; controlling the anti-falling clamping mechanism of the oxygen lance to perform a clamping braking operation on the guide rail based on the brake closing instruction, so as to complete the anti-falling control of the oxygen lance, wherein the oxygen lance slides up and down on the guide rail to realize the oxygen supply operation of steelmaking, and the execution time of the clamping braking operation is the time immediately after the brake closing instruction is issued.
[0006] In a feasible implementation, the determination of whether the steel wire rope is in a slack state or a broken state based on the tension data includes: when the tension data is less than or equal to a preset tension threshold, it is determined that the steel wire rope is in a slack state; when the tension data is greater than the preset tension threshold, it is determined that the steel wire rope is not in a slack state; when the tension data is zero, it is determined that the steel wire rope is in a broken state.
[0007] In a feasible implementation, the determination of whether the steel wire rope is in a slack state or a broken state based on the tension data includes: when the tension data is less than or equal to a preset tension threshold, it is determined that the steel wire rope is in a slack state; when the tension data is greater than the preset tension threshold, it is determined that the steel wire rope is not in a slack state; when the tension data is zero, it is determined that the steel wire rope is in a broken state.
[0008] In a feasible implementation, the method further includes: if the steel wire rope is in a tension state, no brake closing instruction for the guide rail on the oxygen lance trolley is generated, and a preset gap between the cam assembly and the guide rail is maintained.
[0009] In a feasible implementation, the method further includes: Determine the rotating speed of the external hoisting device during the lifting of the oxygen lance; If the rotating speed is greater than or equal to a preset maximum rotating speed threshold, limit the running speed of the external hoisting machine to control the slack time of the steel wire rope.
[0010] In an available implementation, after the control of the oxygen lance anti-falling clamping mechanism on the guide rail to perform clamping braking operation to complete the anti-falling control of the oxygen lance based on the brake closing instruction, the method further comprises: After the oxygen lance anti-falling clamping mechanism performs clamping braking operation on the guide rail, if the steel wire rope is in a tensioned state again, the clamping braking state of the cam assembly on the guide rail is released to restore the normal operation of the oxygen lance.
[0011] In a second aspect of the embodiments of the present application, the embodiments of the present application provide an oxygen lance anti-falling clamping mechanism, which comprises a cam assembly, a connecting rod assembly and a spring assembly, and the processor executes the determination method of the oxygen lance anti-falling of the steelmaking converter as described in the first aspect, and the spring assembly is connected with the cam assembly through the connecting rod assembly.
[0012] In an available implementation, the cam assembly comprises a first inner cam and a second outer cam, the connecting rod assembly comprises a long connecting rod and a short connecting rod, and the spring assembly comprises a spring pull rod and a spring support beam, one end of the spring pull rod is connected with the oxygen lance trolley, the other end of the spring pull rod is connected with the spring support beam, and both ends of the spring support beam are respectively fixedly installed with one long connecting rod, each long connecting rod is connected with the short connecting rod through a pin shaft, the outer wall of each short connecting rod is axially connected with the first inner cam, and the outer wall of each long connecting rod is axially connected with the second outer cam.
[0013] In an available implementation, the first inner cam and the second outer cam are connected with the short connecting rod and the long connecting rod through the outer wall of the oxygen lance trolley.
[0014] In a third aspect of the embodiments of the present application, the embodiments of the present application provide a computer readable storage medium, which stores a computer program, and the computer program is run by a processor to execute the steps of the determination method of the oxygen lance anti-falling of the steelmaking converter as described above.
[0015] The method for determining the anti-falling of the oxygen lance in a steelmaking converter and the anti-falling clamping mechanism of the oxygen lance provided by the embodiments of the present application, compared with the prior art, the embodiments provided by the present application obtain the tension data of the steel wire rope that controls the lifting and lowering of the oxygen lance, and based on the tension data, determine whether the steel wire rope is in a slack state or a broken state, and when the steel wire rope is in a slack state or a broken state, determine to generate a brake closing instruction for the upper guide rail of the oxygen lance trolley, where the oxygen lance trolley is used to represent a movable mechanical platform on which an oxygen lance and an anti-falling clamping mechanism of the oxygen lance are installed, and then based on the brake closing instruction, control the anti-falling clamping mechanism of the oxygen lance to perform a clamping and braking operation on the guide rail to complete the anti-falling control of the oxygen lance, where the oxygen lance slides up and down on the guide rail to realize the oxygen supply operation of steelmaking smelting, and the execution time of the clamping and braking operation is the time immediately executed after the brake closing instruction is issued. The present application realizes that when the oxygen lance trolley gets stuck, the production smoothness is improved, the probability of the steel wire rope breaking is reduced, the occurrence of serious production accidents of the converter oxygen lance falling is reduced, the long-term stable operation of the oxygen lance is ensured, and the operation safety is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The flowchart showing a method for determining the anti-falling of the oxygen lance in a steelmaking converter provided by the embodiments of the present application; Figure 2 The structural schematic diagram showing an anti-falling clamping mechanism of an oxygen lance provided by the embodiments of the present application.
[0017] Figure 2 The corresponding relationship between the reference numerals and the drawing names in the figure is as follows: 2 Anti-falling clamping mechanism of the oxygen lance; 201 First inner cam; 202 Second outer cam; 203 Long connecting rod; 204 Short connecting rod; 205 Spring pull rod; 206 Spring support cross beam. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] In order to better understand the technical solutions provided by the embodiments of the present specification, the technical solutions of the embodiments of the present specification will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present specification and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present specification, rather than limitations on the technical solutions of the present specification. Without conflict, the technical features in the embodiments of the present specification and the embodiments can be combined with each other.
[0019] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. The term "two or more" includes two or more cases.
[0020] First, the applicable application scenarios of this application are introduced. The embodiments provided in this application are applicable to the field of converter steelmaking technology, and in particular, they relate to a method for determining the oxygen lance anti-falling mechanism in a steelmaking converter and an oxygen lance anti-falling clamping mechanism.
[0021] Currently, the most commonly used oxygen lance anti-fall device is a wedge-shaped block anti-fall braking device installed on the oxygen lance lifting trolley. Specifically, a wedge is inserted between the oxygen lance trolley and the guide rail to brake the downward movement of the oxygen lance trolley, thereby preventing it from falling. However, in actual use, the tightness of the wedge cannot be measured, controlled, or adjusted. If it is too tight, the trolley will jam during normal smelting, affecting the smoothness of production. Furthermore, when the oxygen lance or lifting trolley is jammed, the brake closing time is delayed, causing the wire rope to slack. If the oxygen lance or lifting trolley continues to descend and enters free fall, it will cause a large impact on the hoisting system, resulting in the wire rope breaking. If it is too loose, it cannot effectively brake the oxygen lance trolley, and the structure is too flimsy to guarantee the reliability of operation. At the same time, the dust generated during steelmaking acts as a lubricant, which further increases the difficulty of the wedge device to achieve the anti-fall function.
[0022] Based on this, the embodiments of this application provide a method for determining the prevention of oxygen lance fall in steelmaking converters and an oxygen lance anti-fall clamping mechanism. The embodiments provided by this application solve the technical problems in the prior art where the trolley jams, affecting the smoothness of production, causing wire rope breakage, having a thin structure, failing to guarantee the reliability of operation, and increasing the difficulty of the anti-fall function. The embodiments provided by this application improve the smoothness of production, reduce the probability of wire rope breakage, reduce the occurrence of serious production accidents caused by oxygen lance fall in converters when the oxygen lance trolley jams, ensure the long-term stable operation of the oxygen lance, and improve the safety of operation.
[0023] In the existing technology, the control of oxygen lance lifting and lowering mainly consists of several main parts, including external hoisting equipment and traverse device, positioning device, oxygen lance trolley and oxygen lance traverse stop device, track assembly, cable chain assembly and lifting trolley buffer. The external hoisting equipment mainly consists of several basic parts, including hoisting platform, main drive motor (with incremental encoder), emergency drive motor, coupling, brake, reducer (dual drive) and drum device (drum shaft end with absolute encoder). The main function of the external hoisting equipment is to raise the height of the oxygen lance.
[0024] Figure 1 This is a flowchart illustrating a method for determining the prevention of oxygen lance fall in a steelmaking converter, as provided in an embodiment of this application. Figure 1 As shown, the method for determining the prevention of oxygen lance fall in steelmaking converters includes the following steps: S101. Obtain the tension data of the wire rope controlling the raising and lowering of the oxygen lance.
[0025] In this step, the embodiment provided in this application collects the tension data of the wire rope during the lifting and lowering of the oxygen lance through an external wire rope tension balancing and sensing device. The main function of the wire rope tension balancing and sensing device is to measure the tension of the wire rope lifting the oxygen lance and to balance the tension error caused by the relative change in length of the two lifting wire ropes during the lifting and lowering of the oxygen lance within a certain range.
[0026] It is understood that the balance range in the embodiments provided in this application is the difference in length between the two steel wire ropes, which is approximately 0 to 180 mm.
[0027] S102. Based on tension data, determine whether the wire rope is in a slack or broken state.
[0028] In this step, the method in the embodiments provided in this application is used to prevent the oxygen lance trolley from falling abnormally when the oxygen lance trolley falls abnormally due to a malfunction of the hoisting device, such as a broken wire rope, during steelmaking converter smelting. Therefore, it is necessary to determine whether the wire rope is in a slack or broken state based on the tension data collected above.
[0029] For example, when the tension data is less than or equal to a preset tension threshold, the wire rope is determined to be in a slack state; when the tension data is greater than the preset tension threshold, the wire rope is determined to be in a non-slack state; and when the tension data is zero, the wire rope is determined to be in a broken state.
[0030] It is understood that the embodiments provided in this application set at least one preset tension threshold, and then compare the tension data collected in real time with the preset tension threshold. When the tension data is less than or equal to the preset tension threshold, it is determined that the wire rope is in a slack state, and when the tension data is zero, it is determined that the wire rope is in a broken state.
[0031] It should be noted that the embodiments provided in this application require a fast and reliable braking system when the oxygen lance trolley is in a free-fall acceleration, in order to prevent the oxygen lance from falling. The free-fall acceleration of the oxygen lance trolley is caused by the wire rope being in a slack or broken state.
[0032] In cases where the oxygen lance trolley is stuck, the wire rope is slack, and the oxygen lance trolley stops moving, the brakes should not be applied to ensure smooth production.
[0033] S103. If the wire rope is in a slack or broken state, determine to generate a brake closing command on the guide rail of the oxygen lance trolley, wherein the oxygen lance trolley is used to represent a movable mechanical platform equipped with an oxygen lance and an oxygen lance anti-fall clamping mechanism.
[0034] In this step, after determining that the wire rope is in a slack or broken state, the spring assembly drives the connecting rod assembly to rotate, and controls the cam assembly connected to the connecting rod assembly to clamp the guide rail, so as to perform a clamping and braking operation on the guide rail.
[0035] It is understood that the embodiments provided in this application generate a brake closing command on the guide rail of the oxygen lance trolley after determining that the wire rope is slack or broken, and issue an alarm reminder. It is also determined that the alarm time after the wire rope is slack continues until the brake closing command ends. This is mainly to consider the tension alarm phenomenon. In order to avoid the brake closing affecting the stability and smoothness of the oxygen lance lifting and lowering and to reduce the negative impact on production, the time from the wire rope tension alarm to the brake closing is adjusted, and the artificial delay time is eliminated. This allows the brake to immediately perform the clamping and braking operation after the wire rope slack tension alarm, and only the electrical reaction time is retained.
[0036] In the above-mentioned embodiments, the response time of the electrical system itself is related to the selection of external frequency converters and external PLC equipment, and this application tries to select equipment with sensitive electrical system response.
[0037] It is understood that the purpose of setting the brake delay time in the inverter in the embodiments provided in this application is that the immediate closing of the brake after stopping will impact the mechanical load. Therefore, considering the vertical lifting of the oxygen gun, the load impact cannot be avoided. Thus, the brake should not have a delay, and only the electrical reaction time should be reserved.
[0038] It should be noted that the cam assembly in the embodiments provided in this application includes a first inner cam and a second outer cam, and the action points of the first inner cam and the second outer cam act together on the same vertical line of the guide rail.
[0039] In the embodiments provided in this application, the oxygen lance trolley mainly consists of a pulley block and anti-fall braking device, a lifting frame, a guide wheel assembly, oxygen lance fixing parts (for fixing the oxygen lance), and lubrication piping. The pulley block and anti-fall braking device mainly consists of a pulley frame, a pulley block, and an anti-fall braking unit. Its function is to use a wire rope to lift the lifting trolley on the oxygen lance trolley through the pulley block, and to brake the lifting trolley when the wire rope is slack or broken to prevent it from falling. The lubrication piping for each bearing position of the lifting trolley mainly consists of a manual lubrication pump, a lubricating oil filter, an oiler, and lubrication lines. The lifting trolley moves along the guide rail, and the track assembly mainly consists of a horizontal guide rail, a fixed guide rail, and track mounting parts.
[0040] For example, if the wire rope is in a taut state, no brake closing command is generated on the guide rail of the oxygen lance trolley, and the preset gap between the cam assembly and the guide rail is maintained.
[0041] In the above-mentioned embodiments, the preset gap can be customized and used according to different application scenarios and usage conditions. The preset gap in the embodiments provided in this application is set to 10mm.
[0042] S104. Based on the brake closing command, control the oxygen lance anti-fall clamping mechanism to perform a clamping braking operation on the guide rail to complete the anti-fall control of the oxygen lance. The oxygen lance slides up and down on the guide rail to realize the oxygen supply operation in steelmaking and smelting. The execution time of the clamping braking operation is the time immediately after the brake closing command is issued.
[0043] In this step, after determining the brake closing command, the embodiment provided in this application starts to control the cam assembly in the oxygen lance anti-fall clamping mechanism to perform clamping and braking operation on the guide rail based on the above-mentioned brake closing command, so as to prevent the oxygen lance from falling. In addition, the action points of the first inner cam and the second outer cam in the oxygen lance anti-fall clamping mechanism of the embodiment provided in this application are both located on the same vertical line of the guide rail, which effectively prevents the deformation of the guide rail during the braking process.
[0044] The surface curves and angles of the first inner cam and the second outer cam are optimized so that the spring assembly can achieve self-locking braking under action to counteract the lateral force during the braking process.
[0045] For example, the method also includes: During the oxygen lance lifting process, the rotation speed of the external winch is determined; if the rotation speed is greater than or equal to the preset maximum rotation speed threshold, the operating speed of the external winch is limited to control the slack time of the wire rope.
[0046] It is understood that the embodiments provided in this application limit the speed of the external winch to the maximum extent while ensuring that the smelting rhythm is permissible. Specifically, the speed of the external winch monitored above is compared with a preset maximum speed threshold to control the slack time of the wire rope.
[0047] It should be noted that the preset maximum speed threshold in the embodiments provided in this application can be customized and used according to different application scenarios and usage conditions.
[0048] In the embodiments provided in this application, the preset maximum speed threshold can be set to 270 rpm.
[0049] For example, after controlling the oxygen lance anti-fall clamping mechanism to perform a clamping braking operation on the guide rail based on the brake closing command to complete the anti-fall control of the oxygen lance, the method further includes: After the oxygen lance anti-fall clamping mechanism performs a clamping and braking operation on the guide rail, if the wire rope is returned to a taut state, the clamping and braking state of the cam assembly on the guide rail is released to restore the normal operation of the oxygen lance.
[0050] It is understood that in the embodiments provided in this application, when it is determined that the wire rope is taut again, the cam assembly in the oxygen lance anti-fall clamping mechanism is strictly in the open state, which can effectively prevent malfunction. Moreover, the two cams in the cam assembly act simultaneously, which effectively prevents the cam from flipping up, that is, avoids over-action, so as to achieve self-locking.
[0051] The method for preventing oxygen lance falls in steelmaking converters provided in this application, compared with the prior art, obtains the tension data of the wire rope controlling the raising and lowering of the oxygen lance. Based on the tension data, it determines whether the wire rope is in a slack or broken state. If the wire rope is in a slack or broken state, it generates a brake closing command for the guide rail on the oxygen lance trolley. The oxygen lance trolley is a movable mechanical platform equipped with an oxygen lance and an oxygen lance anti-fall clamping mechanism. Then, based on the brake closing command, it controls the oxygen lance anti-fall clamping mechanism to perform a clamping braking operation on the guide rail to complete the anti-fall control of the oxygen lance. The oxygen lance slides up and down on the guide rail to achieve the oxygen supply operation in steelmaking. The execution time of the clamping braking operation is the time immediately after the brake closing command is issued. This application improves the smoothness of production, reduces the probability of wire rope breakage, reduces the occurrence of serious production accidents caused by oxygen lance falls in converters, ensures the long-term stable operation of the oxygen lance, and improves the safety of operation when the oxygen lance trolley jams.
[0052] The embodiments provided in this application can greatly improve and manage the safety risks caused by oxygen lance falling due to equipment failure or emergencies.
[0053] Figure 2 This is a schematic diagram of an oxygen lance anti-fall clamping mechanism provided in an embodiment of this application. Figure 2 As shown, the oxygen lance anti-fall clamping mechanism 2 includes a cam assembly, a connecting rod assembly, and a spring assembly. The spring assembly is connected to the cam assembly through the connecting rod assembly. The cam assembly includes a first inner cam 201 and a second outer cam 202. The connecting rod assembly includes a long connecting rod 203 and a short connecting rod 204. The spring assembly includes a spring pull rod 205 and a spring support beam 206. One end of the spring pull rod 205 is connected to the oxygen lance trolley, and the other end of the spring pull rod 205 is connected to the spring support beam 206. A long connecting rod 203 is fixedly installed at each end of the spring support beam 206. Each long connecting rod 203 is connected to a short connecting rod 204 through a pin. The outer wall of each short connecting rod 204 is axially connected to the first inner cam 201, and the outer wall of each long connecting rod 203 is axially connected to the second outer cam 202. The first inner cam 201 and the second outer cam 202 both penetrate the outer wall of the oxygen lance trolley and are connected to the short connecting rod 204 and the long connecting rod 203.
[0054] In the embodiments provided in this application, the cam assembly, connecting rod assembly, and spring assembly, as well as other transmission components, all possess sufficient strength and rigidity to ensure reliable operation.
[0055] When the spring assembly operates, the cam assembly in the embodiment provided in this application will move in tandem to achieve self-locking, and under the action of a small spring assembly, it will achieve reliable clamping and braking of the track.
[0056] Here, in the embodiments provided in this application, the first inner cam 201 and the second outer cam 202 are both made of 18Cr2Ni4WA, and their elastic limit can reach 835MPa; the connecting rod assembly and the spring assembly are made of Q345 low alloy structural steel, and the first inner cam 201 and the second outer cam 202 have the characteristics of high strength, high toughness, and very low sensitivity to notches.
[0057] It should be noted that the outer wall of the oxygen lance trolley in the embodiments provided in this application is made of the same material as other parts of the oxygen lance trolley, such as low alloy structural steel Q345, which has an elastic limit of 345MPa, which is higher than the maximum stress value of 300.7MPa on its outer wall. The above-mentioned structural design can ensure that the entire outer wall support is within the elastic strain range and can meet the overall design requirements.
[0058] The maximum stress values of the connecting rod assembly and the spring assembly are relatively small. The maximum values of each of the above stresses are significantly less than 345MPa. Therefore, the 45MPa of the low-alloy structural steel Q345 is sufficient to ensure that all parts do not undergo plastic deformation failure, which is enough to meet the strength requirements. Therefore, the structure of the connecting rod assembly and the spring assembly is set to low-alloy structural steel Q345.
[0059] In terms of working principle, the embodiments provided in this application determine that when the wire rope is in a taut state, the spring pull rod 205 drives the spring support beam 206 to lift, causing the spring pull rod 205 to be in a compressed state. At this time, the first inner cam 201 and the second outer cam 202 have a certain preset gap with the guide rail and will not perform clamping braking operation. At this time, the oxygen lance trolley where the oxygen lance is located can move up and down along the inner wall of the guide rail. When the wire rope breaks or becomes too slack, the spring pull rod 205 will extend itself and push the spring support beam 206 to move downward. At this time, the long connecting rod 203 and the short connecting rod 204 also move accordingly, driving the second outer cam 202 and the first inner cam 201 to rotate. The double cams then form a clamping effect on the guide rail and form a brake by friction self-locking to complete the anti-fall control of the oxygen lance.
[0060] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can perform the above-described actions. Figure 1 The steps of the method for determining the prevention of oxygen lance fall in steelmaking converter shown in the method embodiment can be found in the method embodiment for specific implementation, and will not be repeated here.
[0061] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0062] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0063] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-readable program code.
[0064] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0065] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0066] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0067] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to execute a process for determining a fault identification model.
[0068] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).
[0069] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0070] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.
[0071] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0072] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.
[0073] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0074] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
[0075] Although preferred embodiments have been described in this specification, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this specification.
[0076] Obviously, those skilled in the art can make various modifications and variations to this specification without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, this specification is also intended to include such modifications and variations.
Claims
1. A method for determining the anti-fall mechanism of an oxygen lance in a steelmaking converter, applied to an oxygen lance anti-fall clamping mechanism, characterized in that, The oxygen lance anti-fall clamping mechanism includes a cam assembly, a connecting rod assembly, and a spring assembly. The spring assembly is connected to the cam assembly via the connecting rod assembly. The method for determining the anti-fall of the oxygen lance in the steelmaking converter includes: Obtain the tension data of the wire rope controlling the raising and lowering of the oxygen lance; Based on the tension data, determine whether the wire rope is in a slack or broken state; If the wire rope is in the slack state or the broken state, a brake closing command is generated on the guide rail of the oxygen lance trolley, wherein the oxygen lance trolley is used to characterize a movable mechanical platform on which the oxygen lance and the oxygen lance anti-fall clamping mechanism are installed. Based on the brake closing command, the oxygen lance anti-fall clamping mechanism is controlled to perform a clamping braking operation on the guide rail to complete the anti-fall control of the oxygen lance. The oxygen lance slides up and down on the guide rail to realize the oxygen supply operation in steelmaking and smelting. The execution time of the clamping braking operation is the time immediately after the brake closing command is issued.
2. The method for determining the prevention of oxygen lance fall in steelmaking converters according to claim 1, characterized in that, The step of determining whether the wire rope is in a slack or broken state based on the tension data includes: When the tension data is less than or equal to a preset tension threshold, the wire rope is determined to be in a slack state. When the tension data is greater than the preset tension threshold, it is determined that the wire rope is not in a slack state; When the tension data is zero, it is determined that the wire rope is in a broken state.
3. The method for determining the prevention of oxygen lance fall in steelmaking converters according to claim 1, characterized in that, The control of the oxygen lance anti-fall clamping mechanism to perform clamping and braking operations on the guide rail includes: The spring assembly drives the linkage assembly to rotate, controlling the cam assembly connected to the linkage assembly to clamp the guide rail, thereby performing a clamping and braking operation on the guide rail. The cam assembly includes a first inner cam and a second outer cam, and the action points of the first inner cam and the second outer cam act together on the same vertical line of the guide rail.
4. The method for determining the prevention of oxygen lance fall in steelmaking converters according to claim 1, characterized in that, The method further includes: If the wire rope is in a taut state, no brake closing command is generated for the oxygen lance trolley guide rail, and the preset gap between the cam assembly and the guide rail is maintained.
5. The method for determining the prevention of oxygen lance fall in steelmaking converters according to claim 1, characterized in that, The method further includes: During the lifting of the oxygen lance, the rotational speed of the external winch is determined; If the rotational speed is greater than or equal to a preset maximum rotational speed threshold, the operating speed of the external winch is limited to control the slack time of the wire rope.
6. The method for determining the prevention of oxygen lance fall in steelmaking converters according to claim 1, characterized in that, After controlling the oxygen lance anti-fall clamping mechanism to perform a clamping braking operation on the guide rail based on the brake closing command to complete the anti-fall control of the oxygen lance, the method further includes: After the oxygen lance anti-fall clamping mechanism performs a clamping and braking operation on the guide rail, if the wire rope is returned to a taut state, the clamping and braking state of the cam assembly on the guide rail is released to restore the normal operation of the oxygen lance.
7. An oxygen lance anti-fall clamping mechanism, characterized in that, The oxygen lance anti-fall clamping mechanism includes a processor, a cam assembly, a connecting rod assembly, and a spring assembly. The processor executes the method for determining the anti-fall of the oxygen lance in a steelmaking converter as described in claim 1. The spring assembly is connected to the cam assembly through the connecting rod assembly.
8. The oxygen lance anti-fall clamping mechanism according to claim 7, characterized in that, The cam assembly includes a first inner cam and a second outer cam. The connecting rod assembly includes a long connecting rod and a short connecting rod. The spring assembly includes a spring tie rod and a spring support beam. One end of the spring tie rod is connected to the oxygen lance trolley, and the other end of the spring tie rod is connected to the spring support beam. A long connecting rod is fixedly installed at each end of the spring support beam. Each long connecting rod is connected to a short connecting rod through a pin. The outer wall of each short connecting rod is axially connected to the first inner cam, and the outer wall of each long connecting rod is axially connected to the second outer cam.
9. The oxygen lance anti-fall clamping mechanism according to claim 8, characterized in that, Both the first inner cam and the second outer cam penetrate the outer wall of the oxygen lance trolley and are connected to the short connecting rod and the long connecting rod.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps of the method for determining the prevention of oxygen lance fall in a steelmaking converter as described in any of claims 1-7.