A roller changing control method and device

Abstract

The present invention discloses a control method and device for roll changing. The roll changing control method is applied to the roll changing process control of a roll changing vehicle. After it is determined that an output failure occurs in a travel switch for detecting that a roll is located at a target position, a virtual button is generated on a pre-installed human-machine interaction interface, and the virtual button is triggered to enable the roll changing vehicle to continue to perform the roll changing operation until the roll changing is completed. The generated virtual button is not affected by the environment, and can ensure that the roll changing control strategy runs smoothly, thereby reducing the delay in roll changing time caused by the travel switch being unable to output a roll detection signal in time during the roll changing process, thereby improving the reliability of the roll changing vehicle in replacing the roll.

Description

Technical Field

[0001] The present application relates to the technical field of roller changing control, and in particular to a roller changing control method and device. Background Art

[0002] The continuous rolling mill changes rolls 3-4 times per 12-hour shift, and about 200 times per month. During the roll changing process, the roll changing operations of withdrawing the old roll, shifting the new roll sideways, and installing the new roll all require corresponding roll detection signal output to determine whether the relative position of the roll and the roll changing vehicle meets the roll changing conditions. Currently, the roll detection signal is triggered by a mechanical travel switch. The vibration of the equipment can easily cause the proximity switch position to deviate. When the corresponding roll position cannot be detected, the sequential control stops, and manual intervention is required on site to ensure that the roll changing operation continues smoothly.

[0003] Therefore, how to improve the reliability of roll changing by roll changing vehicle is a technical problem that needs to be solved urgently. Summary of the invention

[0004] A roll changing control method and device of the present invention can improve the reliability of a roll changing vehicle in replacing rolls.

[0005] The embodiment of the present invention provides the following solution:

[0006] In a first aspect, an embodiment of the present invention provides a roll changing control method, which is applied to the roll changing control of a roll changing vehicle, and the method includes:

[0007] Determine whether the travel switch for detecting the roller at the target position has an output fault;

[0008] If so, a virtual button is generated on the preinstalled human-machine interaction interface, and the virtual button is triggered to make the roll-changing vehicle continue to perform the roll-changing operation until the roll-changing is completed.

[0009] In an optional embodiment, a plurality of hydraulic pumps for driving the rollers to rise and fall are provided in the strip steel production line frame; before judging whether an output failure occurs in a travel switch for detecting that the rollers are at a target position, the method further includes:

[0010] Obtaining the number of starts of the hydraulic pump;

[0011] When the startup quantity is not less than a preset quantity, the roll changing vehicle is controlled to perform a roll changing operation.

[0012] In an optional embodiment, before determining whether an output failure occurs in a travel switch for detecting that the roller is at a target position, the method further includes:

[0013] Obtaining the stored energy pressure of an accumulator, wherein the accumulator is used to separate the old roll to be replaced from other rolls on the strip production line;

[0014] When the energy storage pressure is not less than a preset pressure, controlling the roll-changing vehicle to perform a roll-changing operation of the old roll to be replaced;

[0015] When the energy storage pressure is less than the preset pressure, the low-pressure pump is controlled to start so that the energy storage device reaches the preset pressure, and then the roller replacement operation of the old roller to be replaced is performed.

[0016] In an optional embodiment, the roller replacement operation is to pull out the old roller; and the step of judging whether an output fault occurs in a travel switch for detecting that the roller is at a target position, comprises:

[0017] After receiving the forward position signal of the roll changing vehicle, the hook lock closing signal of the roll changing hook and the unlocking signal of the old roll to be replaced on the strip production line, if the travel switch does not output the roll detection signal, it is determined that the travel switch has an output fault.

[0018] In an optional embodiment, the roll changing operation is a side shift of a new roll; and the step of judging whether an output fault occurs in a travel switch for detecting that the roll is at a target position, comprises:

[0019] After receiving the backward position signal of the roll changing vehicle and the hook lock opening signal of the roll changing hook, if the travel switch does not output the roll detection signal, it is determined that the travel switch has an output fault.

[0020] In an optional embodiment, the roll changing operation is to install a new roll; and the step of judging whether an output fault occurs in a travel switch for detecting that the roll is at a target position, comprises:

[0021] After receiving the lateral position signal of the new roll platform on the roll changing vehicle, the hook lock closing signal of the roll changing hook and the unlocking signal of the new roll to be installed on the strip production line, if the travel switch does not output the roll detection signal, it is determined that the travel switch has an output fault.

[0022] In an optional embodiment, the roll changing operation is to remove the old roll or install the new roll; before the roll changing vehicle continues to perform the roll changing operation, it also includes:

[0023] Obtain the dam roller position of the frame dam roller and the tension roller position of the tension roller on the strip production line;

[0024] Determining the height of the strip on the strip production line according to the position of the dam roller and the position of the tension roller;

[0025] If the height of the strip steel is within a preset height range, the old roll is withdrawn or the new roll is installed.

[0026] In a second aspect, an embodiment of the present invention further provides a roller changing control device, which is applied to the roller changing control of a roller changing vehicle, and the device comprises:

[0027] A judgment module, used to judge whether an output fault occurs in a travel switch for detecting that the roller is at a target position;

[0028] The execution module is used to generate a virtual button on the pre-installed human-machine interaction interface when an output failure occurs in the travel switch, and trigger the virtual button to make the roll-changing vehicle continue to perform the roll-changing operation until the roll-changing is completed.

[0029] In a third aspect, an embodiment of the present invention further provides an electronic device, comprising a processor and a memory, wherein the memory is coupled to the processor, and the memory stores instructions, which, when executed by the processor, enable the electronic device to perform the steps of any one of the methods described in the first aspect.

[0030] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any one of the methods described in the first aspect.

[0031] Compared with the prior art, the roller changing control method and device of the present invention have the following advantages:

[0032] The roll changing control method of the present invention is applied to the roll changing process control of a roll changing vehicle. After determining that an output failure occurs in a travel switch that detects that the roll is at a target position, a virtual button is generated on a pre-installed human-computer interaction interface, and the virtual button is triggered to allow the roll changing vehicle to continue the roll changing operation until the roll changing is completed. The generated virtual button is not affected by the environment, and can ensure that the roll changing control strategy runs smoothly, thereby reducing the delay in roll changing time caused by the travel switch being unable to output the roll detection signal in time during the roll changing process, thereby improving the reliability of the roll changing vehicle in replacing the roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A flow chart of a roller changing control method provided by an embodiment of the present invention;

[0035] Figure 2 A side structural schematic diagram of a roll changing process of a roll changing vehicle provided by an embodiment of the present invention;

[0036] Figure 3 A front view structural schematic diagram of a roll changing process of a roll changing vehicle provided in an embodiment of the present invention;

[0037] Figure 4 A flow chart of a roll changing control strategy provided by an embodiment of the present invention;

[0038] Figure 5 A schematic structural diagram of a roller changing control device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the embodiments of the present invention.

[0040] The roll-changing car performs a complete roll-changing operation, which usually includes the extraction of the old roll, the side shifting of the new roll and the installation of the new roll. Before the roll-changing operation is performed, the traction mechanism (or traction trolley) on the roll-changing car is used to move the roll-changing car as a whole to the side of the old roll to be replaced on the strip production line, and then the roll-changing hook on the roll-changing car is moved to be close to the old roll to be replaced by the push-pull mechanism (or push-pull trolley). After the hook of the roll to be replaced hooks the old roll, the push-pull mechanism pulls out the old roll to complete the extraction of the old roll; then the new roll is side shifted to the same line as the push-pull mechanism by the side shifting mechanism (or side shifting trolley) to complete the side shifting of the new roll; the push-pull mechanism pushes the new roll to the strip production line and installs it to the initial position of the old roll to complete the installation of the new roll. In the overall roll-changing process, the travel switch is deflected due to mechanical vibration and other reasons, resulting in the stop of the sequential control. The following embodiments of the present invention will specifically explain how to implement the control method of the present invention to ensure the continuous implementation of the sequential control during the roll-changing process.

[0041] See also Figure 1 , Figure 1 A flow chart of a roller changing control method provided in an embodiment of the present invention is applied to roller changing control of a roller changing vehicle, and the method includes:

[0042] S11, determining whether an output fault occurs in a travel switch for detecting that the roller is at a target position.

[0043] Specifically, the roller can be an old roller to be replaced or a new roller to be installed. The target position is the position before or after the roller moves during the entire roller changing process. For example, during the lateral movement of the new roller, the position after the new roller is moved to the same straight line as the push-pull mechanism is the target position. After moving to the target position, the roller detection signal is output by triggering the travel switch to control the roll changing vehicle to continue the sequential control process. The output failure of the travel switch may be due to the loosening of its fasteners, resulting in the displacement of the installation position and the inability to trigger, or it may be damaged and unable to output the signal. The judgment of the output failure of the travel switch can be determined on-site by the operator. For example, if the sequential control stops during the roller changing process, it is determined that the travel switch has an output failure; of course, it can also be automatically judged based on the signal received by the roll changing vehicle.

[0044] In specific implementation, since the old roll (or the roll to be replaced) needs to be driven hydraulically to a balanced state when changing the roll, that is, the two ends of the old roll are lifted to a certain preset height by the oil cylinder to facilitate roll pulling, the smooth control of the roll changing operation may be obstructed due to insufficient hydraulic pressure during the execution process.

[0045] To solve the above problem, in a specific implementation, a plurality of hydraulic pumps for driving the rollers to rise and fall are provided in the strip production line frame; before determining whether an output failure occurs in a travel switch for detecting that the rollers are at a target position, the method further includes:

[0046] The start-up number of the hydraulic pump is obtained; when the start-up number is not less than a preset number, the roll changing vehicle is controlled to perform a roll changing operation.

[0047] Specifically, the roll-changing vehicle is used to extract the old roll or push the new roll onto the strip production line. Before the old roll is extracted, it is necessary to lift the old roll to a balanced state by hydraulic pressure. The hydraulic pressure can produce a superposition effect by starting multiple hydraulic pumps to increase the hydraulic pressure output. When the number of starts is not less than the preset number, it means that the hydraulic pressure can meet the output requirements of the current roll-changing operation, and the roll-changing vehicle is controlled to perform the corresponding roll-changing operation. Among them, the preset number can be determined based on the experience of the technicians, or it can be determined by calibration tests, for example, the number of starts is set to 3.

[0048] In specific implementation, since the rolls may be installed in pairs on the strip production line, or more than two rolls may be installed, for example, in a five-roll continuous rolling mill, directly performing the roll changing operation may cause the roll changing operation to fail because the rolls are in a close-fitting state, thereby affecting the sequential control of the roll changing.

[0049] In a specific implementation manner, before determining whether an output fault occurs in a travel switch for detecting that the roller is at a target position, the method further includes:

[0050] The energy storage pressure of the accumulator is obtained, wherein the accumulator is used to separate the old rolls to be replaced from other rolls on the strip production line; when the energy storage pressure is not less than the preset pressure, the roll changing vehicle is controlled to execute the roll changing operation of the old rolls to be replaced; when the energy storage pressure is less than the preset pressure, the low-pressure pump is controlled to start so that the accumulator reaches the preset pressure, and then the roll changing operation of the old rolls to be replaced is executed.

[0051] Specifically, if the energy storage pressure is not less than the preset pressure, it means that the old roll to be replaced can be separated from other rolls by the energy storage pressure, and the roll changing vehicle is controlled to perform the roll changing operation of the old roll to be replaced; on the contrary, if the energy storage pressure is less than the preset pressure, it means that there is a risk of failure when the energy storage pressure separates the old roll to be replaced from other rolls, and the low-pressure pump is started to increase the pressure in the accumulator, and the roll changing operation of the old roll to be replaced is performed after the preset pressure is reached. The preset pressure can be set to 6.9MPa, or other values ​​can be set according to actual conditions.

[0052] In a specific implementation, the roll replacement operation is to pull out the old roll; and judging whether an output fault occurs in a travel switch for detecting that the roll is at a target position, including:

[0053] After receiving the forward position signal of the roll changing car, the hook lock closing signal of the roll changing hook and the unlocking signal of the old roll to be replaced on the strip production line, if the travel switch does not output the roll detection signal, it is determined that the travel switch has an output fault.

[0054] For details, please refer to Figure 2-3 When the old roll is pulled out, if the forward position signal is received, it means that the roll-changing vehicle has moved to the side of the old roll 2 through the traction mechanism 1, and the push-pull direction of the old roll 2 and the push-pull mechanism 3 are in the same straight line; the roll-changing hook 4 is set at the end of the push-pull mechanism 3, which is used to lock or unlock the roll seat 5 at the end of the roll. If the hook lock closing signal is received, it means that the roll-changing hook 4 and the roll seat 5 of the old roll 2 are firmly locked; if the unlocking signal of the old roll to be replaced is received, it means that the old roll 2 has been separated from other rolls by the accumulator, and the old roll can be pulled out of the strip production line. If the travel switch does not output the roll detection signal, it means that the travel switch is not triggered, and it is determined that there is an output fault in the travel switch.

[0055] In a specific implementation, the roll changing operation is a side shift of a new roll; judging whether an output fault occurs in a travel switch for detecting that the roll is at a target position, including:

[0056] After receiving the backward position signal of the roll changing vehicle and the hook lock opening signal of the roll changing hook, if the travel switch does not output the roll detection signal, it is determined that the travel switch has an output fault.

[0057] Specifically, when the new roller moves sideways, a retreat position signal is received, indicating that the push-pull mechanism has moved to the final position, that is, the end point away from one end of the old roller; a hook lock opening signal is received, indicating that the roller changing hook has been opened and will not interfere with the new roller that moves sideways. At this time, if the travel switch does not output a roller detection signal, it is determined that there is an output fault in the travel switch.

[0058] In a specific implementation, the roll changing operation is to install a new roll; judging whether an output fault occurs in a travel switch for detecting that the roll is at a target position, including:

[0059] After receiving the lateral position signal of the new roll carrier on the roll changing car, the hook lock closing signal of the roll changing hook and the unlocking signal of the new roll to be installed on the strip production line, if the travel switch does not output the roll detection signal, it is determined that there is an output fault in the travel switch.

[0060] Specifically, when a new roll is loaded, a lateral shift position signal is received, indicating that the new roll has been laterally shifted to the target position, that is, the new roll and the push-pull mechanism are in the same straight line; a hook lock closing signal is received, indicating that the roll changing hook has been hooked and locked with the new roll; an unlocking signal is received, indicating that the equipment in the frame of the strip production line will not interfere with the loading of the roll. At this time, if the travel switch does not output a roll detection signal, it is determined that there is an output fault in the travel switch.

[0061] S12: If yes, a virtual button is generated on the pre-installed human-machine interaction interface, and the virtual button is triggered to make the roll-changing vehicle continue to perform the roll-changing operation until the roll-changing is completed.

[0062] Specifically, the human-machine interaction interface can be a touch screen HIM interface; it can also be a display interface of an LCD screen, which is controlled by output devices such as a mouse and a keyboard. After the virtual switch is generated, it can be triggered by on-site technicians or by mobile remote control to ensure that the roll changing vehicle can continue to perform the roll changing steps.

[0063] In the specific implementation, due to the possibility of strip steel existing on the production line during the roll changing operation, the strip steel deviates from the rolling line height and interferes with the roll seat (or roll bearing seat) during the roll changing operation, causing the strip steel to be scratched, deformed or even broken.

[0064] In a specific embodiment, the roll changing operation is to remove the old roll or install the new roll; before the roll changing vehicle continues to perform the roll changing operation, it also includes:

[0065] Obtain the dam roll position of the frame dam roll and the tension roll position of the tension roll on the strip production line; determine the strip height on the strip production line based on the dam roll position and the tension roll position; if the strip height is within the preset height range, remove the old roll or install the new roll.

[0066] Specifically, the frame dam roller and the tension roller are both set to maintain the tension of the strip. To avoid interference between the roll changing operation and the strip, the frame dam roller and the tension roller must be pressed down to ensure that the strip is located in the preset height range of the rolling line, and then the old roll is withdrawn or the new roll is installed. The preset height range can be 1700±10mm.

[0067] The following embodiments of the present invention will be combined with Figure 4 , specifically describe the entire sequence control process of roll changing, the displacement trolley forward sequence control is executed, and the sequence control of reaching the waiting position is completed; the roll changing preparation sequence control is executed, the main hydraulic low pressure is less than 6.9MPa, the low pressure energy storage program is started, the main hydraulic low pressure reaches 6.9MPa, the energy storage program stops, the roll gap quick opening pressure is met, and the roll changing preparation sequence control is completed; it is judged that less than 3 main hydraulic pumps are started, and the displacement trolley forward sequence control does not meet the execution conditions, and the main hydraulic pump is started. When it is greater than or equal to 3, the displacement trolley forward to the frame sequence control is executed, and the displacement trolley forward to the frame sequence control is completed; there is no tension at the mill outlet in strip mode, and it is judged that the 1-5# frame dam roller and three-roller tension roller of the five-roll continuous rolling production line Whether to press down, after pressing down, the roller extraction sequence control is executed; if the proximity switch has no roller signal output, the push-pull trolley front position signal, the roller changing hook hook signal, and the locking open signal are output, and the corresponding virtual switch signal is output, the roller extraction sequence control continues to be executed after triggering, and the roller extraction sequence control is completed; the side shift sequence control is executed, if the proximity switch has no roller signal output, the push-pull trolley rear position signal is output, the hook opening signal is output, and the corresponding virtual switch signal is output, the side shift sequence control continues to be executed, and the side shift sequence control is completed; the roller loading sequence control is executed, the proximity switch has no roller signal output, the side shift in place signal, the hook hook signal and the locking open signal are output, and the corresponding virtual switch signal is output, the roller loading sequence control continues to be executed, and the roller loading sequence control is completed.

[0068] Based on the same inventive concept as the control method, the embodiment of the present invention also provides a control device for roller changing, which is applied to the roller changing control of the roller changing vehicle, see Figure 5 , the device comprises:

[0069] A judgment module 501 is used to judge whether an output fault occurs in a travel switch for detecting that the roller is at a target position;

[0070] The execution module 502 is used to generate a virtual button on the pre-installed human-machine interaction interface when the travel switch has an output failure, and trigger the virtual button to make the roll-changing vehicle continue to perform the roll-changing operation until the roll-changing is completed.

[0071] In an optional embodiment, the device further includes:

[0072] A first acquisition module, used to acquire the startup quantity of the hydraulic pump;

[0073] The first control module is used to control the roll changing vehicle to perform a roll changing operation when the startup quantity is not less than a preset quantity.

[0074] In an optional embodiment, the device further comprises:

[0075] A second acquisition module is used to acquire the storage pressure of the accumulator, wherein the accumulator is used to separate the old roll to be replaced from other rolls on the strip production line;

[0076] A second control module is used to control the roll-changing vehicle to perform the roll-changing operation of the old roll to be replaced when the energy storage pressure is not less than a preset pressure;

[0077] The third control module is used to control the low-pressure pump to start so that the accumulator reaches the preset pressure when the energy storage pressure is less than the preset pressure, and then perform the roller replacement operation of the old roller to be replaced.

[0078] In an optional embodiment, the roller replacement operation is to remove the old roller from the old roller; and the judgment module includes:

[0079] The first determination submodule is used to determine that there is an output fault in the travel switch if the travel switch does not output a roll detection signal after receiving the forward position signal of the roll changing vehicle, the hook lock closing signal of the roll changing hook and the unlocking signal of the old roll to be replaced on the strip production line.

[0080] In an optional embodiment, the roller changing operation is a lateral shift of a new roller; and the judging module includes:

[0081] The second determination submodule is used to determine that the travel switch has an output fault if the travel switch does not output a roll detection signal after receiving the backward position signal of the roll changing vehicle and the hook lock opening signal of the roll changing hook.

[0082] In an optional embodiment, the roll changing operation is to install a new roll; the judgment module includes:

[0083] The third determination submodule is used to determine that there is an output fault in the travel switch after receiving the lateral position signal of the new roll carrier on the roll changing vehicle, the hook lock closing signal of the roll changing hook and the unlocking signal of the new roll to be installed on the strip production line, if the travel switch does not output the roll detection signal.

[0084] In an optional embodiment, the roll changing operation is to remove the old roll or install the new roll; the device further comprises:

[0085] The third acquisition module is used to acquire the dam roller position of the frame dam roller and the tension roller position of the tension roller on the strip production line;

[0086] A determination module, used for determining the height of the strip on the strip production line according to the position of the dam roller and the position of the tension roller;

[0087] The execution module is used to execute the withdrawal of the old roll or the installation of the new roll when the height of the strip steel is within a preset height range.

[0088] Based on the same inventive concept as the control method, an embodiment of the present invention also provides an electronic device, including a processor and a memory, wherein the memory is coupled to the processor, and the memory stores instructions, which, when executed by the processor, enable the electronic device to perform the steps of any one of the control methods.

[0089] Based on the same inventive concept as the control method, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, the steps of any one of the control methods are implemented.

[0090] The technical solution provided in the embodiments of the present invention has at least the following technical effects or advantages:

[0091] 1. The roll changing control method is applied to the roll changing process control of the roll changing vehicle. After determining that the travel switch that detects the roll at the target position has an output fault, a virtual button is generated on the pre-installed human-computer interaction interface, and the virtual button is triggered to enable the roll changing vehicle to continue the roll changing operation until the roll changing is completed. The generated virtual button is not affected by the environment, which can ensure the smooth operation of the roll changing control strategy, reduce the roll changing time delay caused by the travel switch failing to output the roll detection signal in time during the roll changing process, and improve the reliability of the roll changing vehicle in replacing the roll.

[0092] 2. Through the implementation of the present invention, the extension of the roll changing time caused by the signal detection problem during the roll changing process is avoided. The normal roll changing process takes about 7 minutes. Due to the inadequate signal detection, it is necessary to contact professionals to force the signal output, which will extend the roll changing time to 12-15 minutes, resulting in about 15 hours of waiting waste in a year. Taking the 1420 acid rolling production line as an example, the output is about 100 tons per hour. After implementing the solution of the present invention, the loss of about 900,000 yuan can be reduced.

[0093] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0094] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (modules, systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0095] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0096] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0097] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other 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 invention.

[0098] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A roller changing control method, characterized in that: Applied to the roll changing control of a roll changing vehicle, the method comprises: Determine whether the travel switch for detecting the roller at the target position has an output fault; If yes, a virtual button is generated on the pre-installed human-machine interaction interface, and the virtual button is triggered to make the roll-changing vehicle continue to perform the roll-changing operation until the roll-changing is completed; wherein the roll-changing operation includes three operation modes; The first operation mode of the roll replacement operation is to pull out the old roll; the determination of whether the travel switch for detecting the roll at the target position has an output failure includes: After receiving the forward position signal of the roll changing vehicle, the hook lock closing signal of the roll changing hook and the unlocking signal of the old roll to be replaced on the strip production line, if the travel switch does not output the roll detection signal, it is determined that the travel switch has an output fault; The second operation mode of the roll changing operation is the side shifting of the new roll; the step of judging whether the travel switch for detecting the roll at the target position has an output fault comprises: After receiving the backward position signal of the roll changing vehicle and the hook lock opening signal of the roll changing hook, if the travel switch does not output the roll detection signal, it is determined that the travel switch has an output fault; The third operation mode of the roll changing operation is to install a new roll; the step of judging whether the travel switch for detecting the roll at the target position has an output fault comprises: After receiving the lateral position signal of the new roll platform on the roll changing vehicle, the hook lock closing signal of the roll changing hook and the unlocking signal of the new roll to be installed on the strip production line, if the travel switch does not output the roll detection signal, it is determined that the travel switch has an output fault.

2. The roller changing control method according to claim 1, characterized in that: The strip production line frame is equipped with multiple hydraulic pumps that drive the rollers to rise and fall; Before determining whether the travel switch for detecting the roller at the target position has an output fault, the method further includes: Obtaining the number of starts of the hydraulic pump; When the startup quantity is not less than a preset quantity, the roll changing vehicle is controlled to perform a roll changing operation.

3. The roller changing control method according to claim 1, characterized in that: Before determining whether the travel switch for detecting the roller at the target position has an output fault, the method further includes: Obtaining the stored energy pressure of an accumulator, wherein the accumulator is used to separate the old roll to be replaced from other rolls on the strip production line; When the energy storage pressure is not less than a preset pressure, controlling the roll-changing vehicle to perform a roll-changing operation of the old roll to be replaced; When the energy storage pressure is less than the preset pressure, the low-pressure pump is controlled to start so that the energy storage device reaches the preset pressure, and then the roller replacement operation of the old roller to be replaced is performed.

4. The roller changing control method according to claim 1, characterized in that: The roll changing operation is to remove the old roll or install the new roll; before the roll changing vehicle continues to perform the roll changing operation, it also includes: Obtain the dam roller position of the frame dam roller and the tension roller position of the tension roller on the strip production line; Determining the height of the strip on the strip production line according to the position of the dam roller and the position of the tension roller; If the height of the strip steel is within a preset height range, the old roll is withdrawn or the new roll is installed.

5. A roller changing control device, characterized in that: The device is a device corresponding to any one of the control methods described in claims 1 to 4; Applied to the roll changing control of a roll changing vehicle, the device comprises: A judgment module, used to judge whether an output fault occurs in a travel switch for detecting that the roller is at a target position; The execution module is used to generate a virtual button on the pre-installed human-machine interaction interface when an output failure occurs in the travel switch, and trigger the virtual button to make the roll-changing vehicle continue to perform the roll-changing operation until the roll-changing is completed.

6. An electronic device, characterized in that: The electronic device comprises a processor and a memory, wherein the memory is coupled to the processor and stores instructions, and when the instructions are executed by the processor, the electronic device executes the steps of the method according to any one of claims 1 to 4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 4 are implemented.

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