Converter argon blowing station traversing carriage steel wire jumping interlocking control method
By adding tension sensors and contact switches to the transverse movable car in the converter argon blowing station, the problem of uneven stress on the wire rope is solved, and precise control of the wire traction device and locking device is achieved, avoiding the falling accident of the transverse movable car, and improving the stability and safety of operation.
Patent Information
- Application Number
- CN202510664142.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2025-08-15
AI Technical Summary
The existing converter argon blowing station has uneven and abnormal forces on the wire rope during the rising and falling operation, resulting in frequent wire rope jumps, which may cause vicious accidents such as falling of the wire rope.
Add a tension sensor to the wire traction device, obtain real-time tension information through the PLC control program, and set up a variety of contact switches to form a safety protection mechanism, including the frequency converter prepared signal normally open contacts, upper and lower limit normally closed contacts, the normally closed contacts through the upper and lower limits, and the loosening of the locking device into place, so as to achieve precise control of the wire traction device and the locking device.
It effectively avoids abnormal movement of the cross-moving car during the ascending and descending process, reduces the probability of accidents, and improves the stability and safety of operation.
Smart Images
Figure CN120485459A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of steel smelting automation control and relates to a steel wire slot-jumping interlocking control method for a transverse vehicle of a converter argon blowing station. Background Art
[0002] The transverse car of the converter argon blowing station is a key special transportation equipment in the steel and metallurgical industry. It is mainly used in the refining process after converter steelmaking. In the steelmaking process, after the converter completes the initial smelting, the molten steel needs to be transferred to the argon blowing station through a ladle for refining. At this time, the transverse car moves precisely to the bottom of the converter through the rail system, and smoothly lifts the ladle carrying the molten steel and transports it to the argon blowing station. During this process, the transverse car needs to ensure the stable operation of the ladle under high temperature and heavy load conditions to avoid molten steel splashing or ladle tilting, and at the same time accurately align the argon spray gun insertion port of the argon blowing station to ensure that argon is evenly blown into the molten steel to achieve composition homogenization, temperature regulation and inclusion floating.
[0003] The raising and lowering of the transverse car of the converter argon blowing station is mainly achieved through a wire rope hoisting system, the structure of which includes a double-drum drive device, a fixed pulley block, a movable pulley block and a matching wire rope winding mechanism. Specifically, the lifting mechanism of the transverse car is driven by two independent motors, which are connected to the drum through a reducer. One end of the wire rope is fixed to the drum, and the other end passes around the fixed pulley block installed on the top of the mechanism and the movable pulley block connected to the ladle hoist, forming a closed-loop winding path. When the operator issues an ascending command through the HMI interface, the motor drives the drum to rotate in the forward direction, synchronously reeling in the wire ropes on both sides. The movable pulley block is pulled by tension to drive the ladle vertically upward; when descending, the motor runs in the reverse direction to release the wire rope, and the ladle slowly descends under the action of its own weight. At the same time, the frequency converter achieves precise speed regulation by adjusting the motor speed to prevent the ladle from shaking due to inertial impact.
[0004] At present, the rising and lowering control system of the argon blowing station's transverse vehicle in the PLC logic program has not added a transverse vehicle lifting rope tension sensor to participate in the interlocking control, resulting in uneven and abnormal force on the wire rope during the rising and lowering operation of the argon blowing station's transverse vehicle, which frequently causes the transverse vehicle's wire rope to jump out of the groove, which may cause serious accidents such as the transverse vehicle falling. Summary of the Invention
[0005] In view of this, the purpose of the present invention is to provide a wire jumping interlocking control method for the transverse car of the converter argon blowing station, so as to solve the abnormal protection in the case of uneven and abnormal force on the wire rope of the transverse car of the argon blowing station during the ascent and descent operation under the existing control mode, cut off the channel for issuing action instructions of the transverse car of the argon blowing station, and avoid accidents causing the transverse car of the argon blowing station to rise and fall.
[0006] In order to achieve the above object, the present invention provides the following technical solutions:
[0007] A method for controlling steel wire skipping of a transverse vehicle in a converter argon blowing station, the method comprising the following steps:
[0008] A tension sensor is added to the wire pulling device that drives the transverse vehicle of the converter argon blowing station to rise or fall to obtain the wire tension;
[0009] Add a sensor function module corresponding to the tension sensor to the PLC control program of the wire pulling device that controls the rise and fall of the transverse vehicle of the converter argon blowing station, and obtain real-time information from the tension sensor;
[0010] Contact switches for the wire traction device and the locking device are set to control the contact closure status of the wire traction device and the locking device according to the real-time information of the tension sensor; the operating status of the wire traction device is automatically adjusted according to the contact closure status of the wire traction device, and when the trigger contact status of the wire traction device is abnormal, the locking device is controlled to lock the wire traction device.
[0011] Furthermore, the transverse car of the converter argon blowing station is provided with a wire traction device at least in four corner positions. The wire traction device at each position includes at least a transverse car pulley group fixedly provided at the corresponding position of the transverse car, a fixed pulley group fixedly provided on the top bracket and a traction motor provided at the corresponding position of the ground. One end of the wire rope is fixedly connected between the top, extends downward to the transverse car pulley group and extends upward around the transverse car pulley group, wherein the downward extending and upward extending wire ropes around the transverse car pulley group are parallel to each other and extend in the vertical direction; the upward extending wire rope after around the transverse car pulley group again passes around the fixed pulley group fixed on the top, and the wire rope after around the fixed pulley group is connected to the traction motor. When the traction motor rotates forward, the wire rope is wound, and the fixed pulley and movable pulley combination composed of the fixed pulley group and the transverse car pulley group is pulled up; when rotating in the reverse direction, the wire rope is loosened, and the transverse car descends under the action of its own gravity.
[0012] Furthermore, a tension sensor is provided at least at one end of the wire rope fixed to the top bracket to measure the real-time tension of the wire rope; a pressure tension sensor is provided in the support shaft of the traverse vehicle pulley group, the fixed pulley group and the wire rope to measure the tension of the wire rope on both sides of each pulley group.
[0013] Furthermore, in the sensor function module of the PLC control program, corresponding tension sensor variables are set, wherein the tension sensor variables at least include F A_T1 、F A_T2 、F A_T3 、F B_T1 、F B_T2 、F B_T3 、F C_T1 、F C_T2 、FC_T3 、F D_T1 、F D_T2 、F D_T3 , where the subscripts "A, B, C, D" represent different directions, and the subscripts "T1, T2, T3" represent the tension of the wire rope in different sections in the same direction, where T1 is the tension measured by the tension sensor at the fixed end of the top of the wire rope, which directly measures the static tension of the fixed end of the wire rope; T2 is the tension measured by the pressure-type tension sensor embedded in the support shaft of the pulley group of the transverse vehicle, which reflects the dynamic tension on the movable pulley side; T3 is the tension measured by the pressure-type tension sensor embedded in the support shaft of the fixed pulley group, which reflects the dynamic tension on the fixed pulley side.
[0014] Furthermore, the wire pulling device includes at least a normally open contact for the ready signal of the frequency converter, a normally closed contact for the upper limit, a normally closed contact for exceeding the upper limit, a normally closed contact for exceeding the lower limit, and a normally closed contact for exceeding the lower limit. The locking device includes a normally open contact for energizing when released.
[0015] Furthermore, the normally open contact of the inverter ready signal of the wire traction device is used to observe whether the inverter of the wire traction device is ready. If there is a fault in the inverter, the normally open contact of the inverter ready signal is in the normally open state; if the inverter starts normally, the signal after startup causes the normally open contact of the inverter ready to close.
[0016] Furthermore, the upper limit position of the upper limit normally closed contact of the wire traction device refers to the preset reasonable maximum critical value of the tension of the wire rope. When the tension of the wire rope reaches the reasonable maximum critical value, the upper limit normally closed contact is disconnected and changes from the connection state to the disconnection state;
[0017] The lower limit of the lower limit normally closed contact of the wire traction device refers to the preset reasonable minimum critical value of the wire rope tension. When the wire rope tension is lower than the reasonable minimum critical value, the lower limit normally closed contact is disconnected and changes from the connection state to the disconnection state;
[0018] The over-limit limit in the normally closed contact of the wire traction device refers to the redundant maximum critical value that exceeds the preset reasonable maximum critical value of the wire rope tension. When the wire rope tension approaches or exceeds the redundant maximum critical value, the wire traction device stops operating;
[0019] The over-lower limit in the over-lower limit normally closed contact of the wire traction device refers to the redundant minimum critical value below the reasonable minimum critical value of the preset wire rope tension. When the wire rope tension is close to or lower than the redundant minimum critical value, the wire traction device stops operating.
[0020] Furthermore, the normally open contact of the locking device that is energized when released into position means that when the locking device is completely released, the normally open contact that is energized when released into position is closed to form a path; otherwise, the wire rope traction device cannot be driven.
[0021] Furthermore, a normally closed contact for the same-position segmented difference limit of the wire rope and a normally closed contact for the segmented difference limit of the wire rope are also provided;
[0022] The normally closed contact of the same-position segment difference limit means that the tension difference on different sections of the same wire rope in the same direction cannot exceed the limit value. When the tension on different sections exceeds the limit value, the normally closed contact of the same-position segment difference limit is disconnected;
[0023] The position difference limit normally closed contact means that the difference in average tension between the wire ropes in different directions shall not exceed the limit value. When the tension of the wire ropes in different directions exceeds the limit value, the position difference limit normally closed contact is disconnected.
[0024] Furthermore, the on-off state of the contacts is synchronously adjusted according to any change of the wire rope, that is, the wire traction devices in the four directions always maintain a synchronous adjustment state.
[0025] The beneficial effects of the present invention are:
[0026] By adding a tension sensor to the wire pulling device, this invention can obtain real-time wire tension information, providing a data foundation for subsequent precise control. By adding a corresponding sensor function module to the PLC control program, the contact closure state of the wire pulling device and the locking device can be precisely controlled based on the real-time information from the tension sensor, enabling automatic adjustment of the wire pulling device's operating state, effectively improving the accuracy and timeliness of control.
[0027] Secondly, multiple contact switches are installed in the wire pulling device and locking device, such as the normally open contact for the inverter ready signal, the normally closed contact for upper and lower limit switches, the normally closed contact for exceeding upper and lower limit switches, and the normally open contact for energizing when fully released. These contact switches work together to form a comprehensive safety protection mechanism. In the event of abnormal wire tension, inverter failure, or incomplete release of the locking device, the circuit can be promptly disconnected or adjusted, preventing abnormal movement of the traverse vehicle during ascent and descent, greatly reducing the probability of accidents.
[0028] Furthermore, the setting of normally closed contacts for the same-position segment difference limit and the normally closed contacts for the position difference limit ensures that the tension difference between different sections of wire rope in the same direction and between wire ropes in different directions is within a reasonable range, effectively avoiding problems such as tilting of the transverse vehicle due to uneven tension, and further improving the stability and safety of the transverse vehicle operation.
[0029] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:
[0031] Figure 1 The present invention is a schematic diagram of the overall process of a method for controlling the wire skipping of a transverse vehicle in a converter argon blowing station. DETAILED DESCRIPTION
[0032] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.
[0033] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.
[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0035] See also Figure 1 , which is a wire skipping interlocking control method for the transverse car of the converter argon blowing station.
[0036] Example 1
[0037] This embodiment first provides a detailed implementation process of a wire skipping interlocking control method for a transverse car in a converter argon blowing station, such as Figure 1 As shown, the specific method is:
[0038] S1. A tension sensor is added to the wire pulling device that drives the transverse vehicle of the converter argon blowing station to rise or fall to obtain the wire tension;
[0039] S2. Add a sensor function module corresponding to the tension sensor to the PLC control program of the wire pulling device that controls the rise or fall of the transverse vehicle of the converter argon blowing station, and obtain real-time information from the tension sensor;
[0040] S3. Set contact switches for the wire traction device and the locking device, and control the contact closure status of the wire traction device and the locking device according to the real-time information of the tension sensor; automatically adjust the operating status of the wire traction device according to the contact closure status of the wire traction device, and control the locking device to lock the wire traction device when the trigger contact status of the wire traction device is abnormal.
[0041] In step S1 of this embodiment, the converter argon blowing station transverse car is provided with wire traction devices at least at four corner positions to ensure the balance of the transverse car during the rising and falling process, wherein the wire traction device at each position includes at least a transverse car pulley block fixedly arranged at the corresponding position of the transverse car, a fixed pulley block fixedly arranged on the top bracket and a traction motor arranged at the corresponding position on the ground, one end of the wire rope is fixedly connected to the top, extends downward to the transverse car pulley block and bypasses the transverse car pulley block to extend upward. The downward and upward extending wire ropes that pass through the traversing vehicle pulley block are parallel to each other and extend in the vertical direction. After passing through the traversing vehicle pulley block, the upward extending wire rope passes through the fixed pulley block fixed at the top again. After passing through the fixed pulley block, the wire rope is connected to the traction motor. When the traction motor rotates forward, the wire rope is wound, and the traversing vehicle is pulled upward by the fixed pulley and movable pulley combination composed of the fixed pulley block and the traversing vehicle pulley block. When the traction motor rotates in the reverse direction, the wire rope is unwound, and the traversing vehicle descends under its own weight. In this embodiment, a tension sensor is provided at least at one end of the wire rope fixed to the top bracket to measure the real-time tension of the wire rope.
[0042] As a preferred embodiment, a compression tension sensor can be set in the support shaft of the transverse vehicle pulley group, the fixed pulley group and the wire rope to more accurately measure the tension of the wire rope on both sides of each pulley group, thereby avoiding the situation where the tension of the same wire rope is different before and after different pulley groups due to the friction of the pulley group, and the tension measured by the tension sensor only at the fixed end of the wire rope is inaccurate.
[0043] In step S2 of this embodiment, corresponding tension sensor variables are set in the sensor function module of the PLC control program, wherein the tension sensor variables include at least F A_T1 、F A_T2 、F A_T3 、F B_T1 、F B_T2 、F B_T3 、F C_T1 、F C_T2 、F C_T3 、F D_T1 、F D_T2 、F D_T3 , where the subscripts "A, B, C, D" represent different directions, and the subscripts "T1, T2, T3" represent the tension of the wire rope in different sections in the same direction, where T1 is the tension measured by the tension sensor at the fixed end of the top of the wire rope, which directly measures the static tension of the fixed end of the wire rope; T2 is the tension measured by the pressure-type tension sensor embedded in the support shaft of the pulley group of the transverse vehicle, which reflects the dynamic tension on the movable pulley side; T3 is the tension measured by the pressure-type tension sensor embedded in the support shaft of the fixed pulley group, which reflects the dynamic tension on the fixed pulley side.
[0044] In the specific implementation of this embodiment, based on the existing converter argon blowing station transverse car electrical control system, the LIM-1 lifting and transverse car A wire rope tension sensor function block and the LIM-2 lifting and transverse car B wire rope tension sensor function block are added.
[0045] In step S3 of this embodiment, the wire pulling device includes at least a normally open contact for the inverter ready signal, a normally closed contact for the upper limit, a normally closed contact for exceeding the upper limit, a normally closed contact for the lower limit, and a normally closed contact for exceeding the lower limit. The locking device includes a normally open contact for energizing when released.
[0046] The normally open contact of the inverter ready signal of the wire traction device is used to observe whether the inverter of the wire traction device is ready. If there is a fault in the inverter, such as failure to start, abnormal start, abnormal operating status, etc., the normally open contact of the inverter ready signal will not be closed, that is, the inverter path cannot be connected; if the inverter starts normally, the signal after startup causes the normally open contact of the inverter ready to close, and the inverter is connected.
[0047] The upper limit position of the upper limit normally closed contact of the wire traction device refers to the reasonable maximum critical value of the preset wire rope tension. When the wire rope tension reaches the reasonable maximum critical value, the upper limit normally closed contact is disconnected and changes from the passage state to the open circuit state, thereby slowing down or changing the movement amplitude of the transverse vehicle.
[0048] Similarly, the lower limit in the lower limit normally closed contact of the wire traction device refers to the reasonable minimum critical value of the preset wire rope tension. When the wire rope tension is lower than the reasonable minimum critical value, the lower limit normally closed contact is disconnected and changes from the passage state to the open circuit state, thereby slowing down or changing the movement amplitude of the transverse vehicle.
[0049] The over-limit limit in the over-limit limit normally closed contact of the wire traction device refers to the redundant maximum critical value that exceeds the preset reasonable maximum critical value of the wire rope tension. When the wire rope tension approaches or exceeds the redundant maximum critical value, the wire traction device stops operating.
[0050] The over-lower limit in the over-lower limit normally closed contact of the wire traction device refers to the redundant minimum critical value below the reasonable minimum critical value of the preset wire rope tension. When the wire rope tension is close to or lower than the redundant minimum critical value, the wire traction device stops operating.
[0051] The normally open contact of the locking device that is energized when it is fully released means that when the locking device is completely released, the normally open contact that is energized when it is fully released will close to form a path, and the wire traction device can be driven to pull the transverse vehicle. Otherwise, the wire rope traction device cannot be driven.
[0052] Additionally, normally closed contacts for the in-position segmented difference limit and the position difference limit can be set for the wire rope. The in-position segmented difference limit means that the tension difference between different segments of the same wire rope in the same position cannot exceed the limit value. When the tension on different segments exceeds the limit value, the normally closed contact for the in-position segmented difference limit opens. The position difference limit means that the difference in average tension between wire ropes in different positions cannot exceed the limit value. When the tension of wire ropes in different positions exceeds the limit value, the normally closed contact for the position difference limit opens.
[0053] It is worth noting that the on-off state of the above-mentioned contacts is synchronously adjusted according to any changes in the wire rope, that is, the wire traction devices in the four directions always maintain a synchronous adjustment state to avoid accidents such as tilting of the transverse vehicle due to asynchronous traction.
[0054] Example 2
[0055] This embodiment is based on the detailed method given in Example 1. It successfully implemented the control mode transformation in the electrical control system of a series of 210t converter argon blowing station transverse vehicles in Chongqing Iron and Steel Plant, effectively avoiding the breaking of the lifting and lowering wire ropes of the argon blowing station transverse vehicles and avoiding the occurrence of serious accidents.
[0056] Specifically, in this embodiment, as a preferred implementation method, according to the existing converter argon blowing station transverse car electrical control system, the LIM-1 lifting and transverse car A wire rope tension sensor function block is added, and the LIM-2 lifting and transverse car B wire rope tension sensor function block is added. When the operator operates the raising or lowering action of the argon blowing station transverse car on the HMI human-machine operation screen, the normally open contact of the ready signal of the wire rope traction device frequency converter of the No. 1 argon blowing station transverse car in the electrical room is energized and closed, and the locking device of the argon blowing station transverse car is loosened and energized and the normally open contact is closed; the upper limit normally closed contact of the wire rope traction device of the argon blowing station transverse car is closed, and the normally closed contact of the wire rope traction device of the argon blowing station transverse car exceeds the upper limit or the normally closed contact of the wire rope traction device of the argon blowing station transverse car is closed, and the normally closed contact of the wire rope traction device of the argon blowing station transverse car exceeds the lower limit; the rope limit test 1 (lower limit 2t, upper limit 5t) of the lifting rope tension sensor of the transverse car is put into the rising action protection, and the rope limit test 2 (lower limit 2t, upper limit 5t) of the lifting rope tension sensor of the transverse car is put into the rising or falling action protection.
[0057] In this embodiment, the electrical control system for the converter argon blowing station's transverse vehicle, designed according to the method, is a multi-level interlocking automation control system based on a programmable logic controller (PLC). Its core function is to precisely control and safely protect the transverse vehicle's lifting and lowering movements by real-time monitoring of wire rope tension, equipment status, and position signals. The system consists of a tension sensor network, a variable frequency drive module, mechanical limit contacts, and a human-machine interface (HMI). These components interact with the PLC via an industrial bus (such as Profibus or EtherCAT). When an operator issues a lift command through the HMI, the PLC first verifies the interlocking conditions: the frequency converter must output a "ready" signal (normally open contact closed), the locking device must respond with a "released in place" signal (normally open contact closed), and the wire rope tension must be within a preset safety range (e.g., 2t ≤ tension ≤ 5t when raising, 1.5t ≤ tension ≤ 5.5t when lowering). If any of these conditions are not met, the PLC will refuse to execute the command and trigger an HMI alarm.
[0058] The system uses layered compression tension sensors to collect real-time wire rope force data, including static tension at the fixed end (T1), dynamic tension on the traversing vehicle's movable pulley side (T2), and dynamic tension on the fixed pulley side (T3). Combined with a four-position (A / B / C / D) tension mean comparison algorithm, the system dynamically corrects the traversing vehicle's horizontal posture. For example, during the traversing vehicle's ascent, if T2 in position A increases abnormally to 5.2t (exceeding the upper limit of 5t) due to pulley friction, the PLC will immediately reduce the traction motor frequency in position A and simultaneously compare the tension data in positions B / C / D. If the mean values in the remaining positions are less than 4.8t, the "percentile difference overlimit" protection is triggered, forcing the traversing vehicle to pause and activate the locking device to prevent wire rope jumping or structural deformation caused by unilateral overload. All tension data, limit status, and operation records are visualized through the HMI and stored in the PLC's historical database, supporting fault tracing and predictive maintenance analysis. For example, long-term tension fluctuation trends can be used to identify potential pulley wear or sensor drift risks. The system has been successfully applied in projects such as Chongqing Steel, significantly reducing the accident rate of unplanned wire rope breakage and improving the stability and safety of the argon blowing process.
[0059] According to the solution of the present invention, the probability of major accidents occurring when the wire rope of the argon blowing station transverse car is unevenly stressed or abnormal during the rising and falling operation can be effectively reduced, such as serious accidents such as casualties and equipment damage caused by the breaking of the wire rope of the argon blowing station transverse car, thereby improving the stability of the lifting and lowering control system of the converter argon blowing station transverse car.
[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.
Claims
1. A method for controlling the steel wire skipping of a transverse vehicle in a converter argon blowing station, characterized in that: The method comprises the following steps: A tension sensor is added to the wire pulling device that drives the transverse vehicle of the converter argon blowing station to rise or fall to obtain the wire tension; Add a sensor function module corresponding to the tension sensor to the PLC control program of the wire pulling device that controls the rise and fall of the transverse vehicle of the converter argon blowing station, and obtain real-time information from the tension sensor; Contact switches for the wire traction device and the locking device are set to control the contact closure status of the wire traction device and the locking device according to the real-time information of the tension sensor; the operating status of the wire traction device is automatically adjusted according to the contact closure status of the wire traction device, and when the trigger contact status of the wire traction device is abnormal, the locking device is controlled to lock the wire traction device.
2. The method for controlling the wire skipping of the traverse vehicle of the converter argon blowing station according to claim 1, characterized in that: The transverse car of the converter argon blowing station is provided with a wire traction device at at least four corner positions. The wire traction device at each position includes at least a transverse car pulley group fixedly arranged at the corresponding position of the transverse car, a fixed pulley group fixedly arranged on the top bracket and a traction motor arranged at the corresponding position of the ground. One end of the wire rope is fixedly connected to the top, extends downward to the transverse car pulley group and extends upward around the transverse car pulley group, wherein the downward extending and upward extending wire ropes around the transverse car pulley group are parallel to each other and extend in the vertical direction; the upward extending wire rope after around the transverse car pulley group again passes around the fixed pulley group fixed on the top, and the wire rope after around the fixed pulley group is connected to the traction motor. When the traction motor rotates forward, the wire rope is wound, and the fixed pulley and movable pulley combination composed of the fixed pulley group and the transverse car pulley group is pulled up; when rotating in the reverse direction, the wire rope is loosened, and the transverse car descends under the action of its own gravity.
3. The method for controlling the wire skipping of the traverse vehicle of the converter argon blowing station according to claim 2, characterized in that: A tension sensor is set at least at one end of the wire rope fixed to the top bracket to measure the real-time tension of the wire rope; a pressure tension sensor is set in the support shaft of the transverse vehicle pulley group and the fixed pulley group and the wire rope to measure the tension of the wire rope on both sides of each pulley group.
4. The method for controlling the wire skipping of the traverse vehicle of the converter argon blowing station according to claim 3, characterized in that: In the sensor function module of the PLC control program, corresponding tension sensor variables are set, wherein the tension sensor variables include at least F A_T1 、F A_T2 、F A_T3 、F B_T1 、F B_T2 、F B_T3 、F C_T1 、F C_T2 、F C_T3 、F D_T1 、F D_T2 、F D_T3 , where the subscripts "A, B, C, D" represent different directions, and the subscripts "T1, T2, T3" represent the tension of the wire rope in different sections in the same direction. T1 is the tension measured by the tension sensor at the fixed end of the top of the wire rope, which directly measures the static tension of the fixed end of the wire rope; T2 is the tension measured by the pressure-type tension sensor embedded in the support shaft of the pulley group of the traverse vehicle, which reflects the dynamic tension on the movable pulley side; T3 is the tension measured by the pressure-type tension sensor embedded in the support shaft of the fixed pulley group, which reflects the dynamic tension on the fixed pulley side.
5. The method for controlling the wire skipping of the traverse vehicle of the converter argon blowing station according to claim 4, characterized in that: The wire pulling device includes at least a normally open contact for the inverter ready signal, a normally closed contact for the upper limit, a normally closed contact for exceeding the upper limit, a normally closed contact for the lower limit, and a normally closed contact for exceeding the lower limit. The locking device includes a normally open contact that is energized when released.
6. The method for controlling the wire skipping of the traverse vehicle of the converter argon blowing station according to claim 5, characterized in that: The normally open contact of the inverter ready signal of the wire traction device is used to observe whether the inverter of the wire traction device is ready. If there is a fault in the inverter, the normally open contact of the inverter ready signal is in the normally open state; if the inverter starts normally, the signal after startup causes the normally open contact of the inverter ready to close.
7. The method for controlling the wire skipping of the traverse vehicle of the converter argon blowing station according to claim 5, characterized in that: The upper limit position of the upper limit normally closed contact of the wire traction device refers to the reasonable maximum critical value of the preset wire rope tension. When the wire rope tension reaches the reasonable maximum critical value, the upper limit normally closed contact is disconnected and changes from the connection state to the disconnection state; The lower limit of the lower limit normally closed contact of the wire traction device refers to the preset reasonable minimum critical value of the wire rope tension. When the wire rope tension is lower than the reasonable minimum critical value, the lower limit normally closed contact is disconnected and changes from the connection state to the disconnection state; The over-limit limit in the normally closed contact of the wire traction device refers to the redundant maximum critical value that exceeds the preset reasonable maximum critical value of the wire rope tension. When the wire rope tension approaches or exceeds the redundant maximum critical value, the wire traction device stops operating; The over-lower limit in the over-lower limit normally closed contact of the wire traction device refers to the redundant minimum critical value below the reasonable minimum critical value of the preset wire rope tension. When the wire rope tension is close to or lower than the redundant minimum critical value, the wire traction device stops operating.
8. The method for controlling the wire skipping of the traverse vehicle of the converter argon blowing station according to claim 5, characterized in that: The normally open contact of the locking device that is energized when released in full force means that when the locking device is completely released, the normally open contact that is energized when released in full force is closed to form a path; otherwise, the wire rope traction device cannot be driven.
9. The method for controlling the wire skipping of the traverse vehicle of the converter argon blowing station according to claim 5, characterized in that: Also provided are the normally closed contacts for the in-position segmented difference limit and the normally closed contacts for the segmented difference limit of the wire rope; The normally closed contact of the same-position segment difference limit means that the tension difference on different sections of the same wire rope in the same direction cannot exceed the limit value. When the tension on different sections exceeds the limit value, the normally closed contact of the same-position segment difference limit is disconnected; The position difference limit normally closed contact means that the difference in average tension between the wire ropes in different directions shall not exceed the limit value. When the tension of the wire ropes in different directions exceeds the limit value, the position difference limit normally closed contact is disconnected.
10. The method for controlling the steel wire skipping of the transverse vehicle of the converter argon blowing station according to claim 9, characterized in that: The on-off state of the contacts is synchronously adjusted according to any change of the wire rope, that is, the wire traction devices in the four directions always maintain a synchronous adjustment state.