A control system and method for cutting of a continuous casting machine fire cutting machine

Abstract

The present application discloses a control system and method for cutting of a continuous casting machine fire cutter, the control system includes a PLC controller, a driving roller, a hydraulic valve station connected to the PLC controller, a cutting gun of the fire cutter and a driving roller lifting device, the driving roller lifting device includes a reducer, a driving roller coupling, a hydraulic cylinder and a solenoid valve station, the PLC controller, the reducer, and the driving roller coupling are connected in sequence, a coupling solenoid valve is arranged in the driving roller coupling, and the coupling solenoid valve is connected to the hydraulic valve station; the hydraulic cylinder is placed below the driving roller, and the hydraulic valve station, the hydraulic cylinder, and the solenoid valve station are connected in sequence; the number of driving rollers is multiple, and each driving roller corresponds to a driving roller lifting device. In the present application, all driving rollers are controlled to rise and fall one by one through the PLC controller, the coupling solenoid valve, the driving roller coupling, the hydraulic cylinder and the solenoid valve station, so that the cutting gun of the fire cutter continues to cut the ingot without interruption, thereby reducing the ingot cutting time of the fire cutter and improving the cutting efficiency.

Description

Technical Field

[0001] The present application relates to the field of automation control technology in the metallurgical industry, and in particular to a control system and method for cutting of a continuous casting machine flame cutting machine. Background Art

[0002] The continuous casting machine is a production equipment that can continuously cast high-temperature molten steel into billets with certain cross-sectional shapes and certain size specifications. During the production process of the continuous casting machine, the billets are cut into billets of certain lengths by the fire cutter. The fire cutter system is one of the core systems of the entire continuous casting production line. Whether the system can operate normally directly affects the normal drawing, cutting and hot delivery of the continuous casting machine.

[0003] At present, most domestic continuous casting machine fire cutting machines usually adopt automatic cutting. After cutting, the fire cutting machine body needs to return to the cutting position to wait for the order to cut the next billet. However, the continuous casting machine fire cutting machine cannot cut the billet when the cutting gun stops oxygen when passing the roller, otherwise the driving roller under the fire cutting machine will be damaged. Therefore, it is easy to cause the billet cutting time of the fire cutting machine to be too long, resulting in low cutting efficiency. Summary of the invention

[0004] The present application provides a control system and method for cutting of a continuous casting machine fire cutting machine, so as to solve the technical problem of low cutting efficiency of the existing continuous casting machine fire cutting machine during automatic cutting.

[0005] A control system for cutting of a continuous casting machine fire cutter comprises a PLC controller, a hydraulic valve station, a fire cutter cutting gun, a driving roller and a driving roller lifting device, wherein the hydraulic valve station, the fire cutter cutting gun and the driving roller lifting device are electrically connected to the PLC controller respectively, the fire cutter cutting gun is placed above the driving roller, the driving roller lifting device is electrically connected to the driving roller, wherein the driving roller lifting device is used to control the driving roller to rise or fall, the driving roller lifting device comprises a reducer and a driving roller coupling, the PLC controller is electrically connected to the first end of the reducer, the second end of the reducer is electrically connected to the first end of the driving roller coupling, the second end of the driving roller coupling is movably connected to the driving roller, a coupling solenoid valve is arranged in the driving roller coupling, and the coupling solenoid valve is electrically connected to the hydraulic valve station; the driving roller lifting device also comprises a hydraulic cylinder and a solenoid valve station, the hydraulic cylinder is placed below the driving roller, the first end of the hydraulic cylinder is electrically connected to the hydraulic valve station, and the second end of the hydraulic cylinder is electrically connected to the solenoid valve station; there are multiple driving rollers, and each driving roller corresponds to a driving roller lifting device.

[0006] Optionally, a rising solenoid valve and a falling solenoid valve are arranged in the solenoid valve station, the rising solenoid valve is used to control the driving roller to rise, and the falling solenoid valve is used to control the driving roller to fall.

[0007] Optionally, a stop ruler is provided on the outer side of the hydraulic cylinder, and the stop ruler is used to determine the position of the hydraulic cylinder.

[0008] Optionally, the driving roller lifting device further comprises a limit switch, and the limit switch is used to indicate the position of the driving roller, wherein the limit switch comprises an upper limit switch and a lower limit switch, and the stop ruler moves back and forth along the upper limit switch and the lower limit switch.

[0009] Optionally, the system further comprises a driving roller base, and the hydraulic cylinder is fixed to the driving roller base via a bracket.

[0010] Optionally, the driving roller lifting device further includes a frequency converter, a first end of the frequency converter is electrically connected to the PLC controller, and a second end of the frequency converter is electrically connected to a first end of the reducer.

[0011] Optionally, the driving roller lifting device further comprises a motor, a first end of the motor is electrically connected to a first end of the frequency converter, and a second end of the motor is electrically connected to a first end of the speed reducer.

[0012] A control method for cutting of a continuous casting machine fire cutter, the method comprising: when the cutting gun of the fire cutter reaches the edge of a driving roller, a PLC controller sends a descending instruction to a coupling solenoid valve; the coupling solenoid valve controls the driving roller coupling to be disengaged according to the descending instruction, and the reducer and the driving roller are disconnected; the PLC controller supplies oil to the solenoid valve station through a hydraulic valve station and a hydraulic cylinder, so that the solenoid valve station controls the driving roller to descend; when the cutting gun of the fire cutter passes through the driving roller, the PLC controller sends an ascending instruction to the coupling solenoid valve; the coupling solenoid valve controls the driving roller coupling to be connected according to the ascending instruction, and the reducer and the driving roller are connected; the PLC controller supplies oil to the solenoid valve station through a hydraulic valve station and a hydraulic cylinder, so that the solenoid valve station controls the driving roller to ascend.

[0013] Beneficial effects: The present application provides a control system for the cutting of a continuous casting machine fire cutter, including a PLC controller, a hydraulic valve station, a fire cutter cutting gun, a driving roller and a driving roller lifting device. The relationship between the various components is as follows: the hydraulic valve station, the fire cutter cutting gun and the driving roller lifting device are electrically connected to the PLC controller respectively, the fire cutter cutting gun is placed above the driving roller, and the driving roller lifting device is electrically connected to the driving roller. Among them, the driving roller lifting device is used to control the driving roller to rise or fall, and the driving roller lifting device includes a reducer and a driving roller coupling. The PLC controller is electrically connected to the first end of the reducer, the second end of the reducer is electrically connected to the first end of the driving roller coupling, the second end of the driving roller coupling is movably connected to the driving roller, and a coupling solenoid valve is arranged in the driving roller coupling, and the coupling solenoid valve is electrically connected to the hydraulic valve station. The coupling solenoid valve can control the driving roller coupling to be decoupled or coupled according to the instructions sent by the PLC controller, so that the reducer and the driving roller are disconnected or connected. When the reducer and the driving roller are disconnected, the driving roller can be lowered. In order to drive the driving roller to descend, the driving roller lifting device also includes a hydraulic cylinder and a solenoid valve station. The hydraulic cylinder is placed below the driving roller, the first end of the hydraulic cylinder is electrically connected to the hydraulic valve station, and the second end of the hydraulic cylinder is electrically connected to the solenoid valve station. The PLC controller supplies oil to the solenoid valve station through the hydraulic valve station and the hydraulic cylinder, so that the solenoid valve station controls the driving roller to descend. The number of driving rollers in the control system is multiple, and each driving roller corresponds to a driving roller lifting device. In the process of use, the first driving roller is taken as an example. When the cutting gun of the fire cutting machine reaches the edge of the first driving roller, at this time, the first driving roller lifting device is used to control the first driving roller to descend, and the PLC controller sends a descending instruction to the coupling solenoid valve. The coupling solenoid valve controls the driving roller coupling to decouple according to the descending instruction, and the reducer and the driving roller are disconnected. The PLC controller supplies oil to the solenoid valve station through the hydraulic valve station and the hydraulic cylinder, so that the solenoid valve station controls the first driving roller to descend. When the cutting gun of the fire cutting machine passes through the first driving roller, at this time, the first driving roller lifting device is used to control the first driving roller to rise, and the PLC controller sends an ascending instruction to the coupling solenoid valve. The coupling solenoid valve controls the drive roller coupling according to the rising instruction, and the reducer is connected to the first drive roller. The PLC controller supplies oil to the solenoid valve station through the hydraulic valve station and the hydraulic cylinder, so that the solenoid valve station controls the first drive roller to rise. When the cutting gun of the fire cutting machine is at the edge of the position of the second drive roller, the lifting and lowering of the second drive roller is controlled according to the control method of the first drive roller, and so on and so forth until the fire cutting machine completes cutting a steel billet, thereby realizing that each drive roller is lowered and raised one by one according to the different positions of the cutting gun of the fire cutting machine, and the cutting gun of the fire cutting machine continues to cut the ingot without interruption. In the present application, all the drive rollers are controlled to descend and rise one by one through the PLC controller, the coupling solenoid valve, the drive roller coupling, the hydraulic cylinder and the solenoid valve station, so that the cutting gun of the fire cutting machine continues to cut the ingot without interruption, thereby reducing the cutting time of the fire cutting machine and improving the cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0015] Figure 1 A schematic diagram of the structure of a control system for a continuous casting machine fire cutting machine provided for application.

[0016] Description of the drawings: 1-PLC controller, 2-hydraulic valve station, 3-fire cutting machine cutting gun, 4-driving roller, 5-driving roller lifting device, 6-driving roller base, 51-reducer, 52-driving roller coupling, 53-coupling solenoid valve, 54-hydraulic cylinder, 55-solenoid valve station, 56-limit switch, 57-bracket, 58-frequency converter, 59-motor, 541-stop ruler, 551-upper solenoid valve, 552-lower solenoid valve, 561-upper limit switch, 562-lower limit switch. DETAILED DESCRIPTION

[0017] Figure 1 A schematic diagram of the control system for a continuous casting machine flame cutting machine provided for the application. Figure 1It can be seen that the present application provides a control system for the cutting of a continuous casting machine fire cutter, which includes a PLC controller 1, a hydraulic valve station 2, a fire cutter cutting gun 3, a driving roller 4 and a driving roller lifting device 5. The relationship between the various components is as follows: the hydraulic valve station 2, the fire cutter cutting gun 3 and the driving roller lifting device 5 are electrically connected to the PLC controller 1 respectively, the fire cutter cutting gun 3 is placed above the driving roller 4, and the driving roller lifting device 5 is electrically connected to the driving roller 4. Among them, the driving roller lifting device 5 is used to control the driving roller 4 to rise or fall, and the driving roller lifting device 5 includes a reducer 51 and a driving roller coupling 52. The PLC controller 1 is electrically connected to the first end of the reducer 51, the second end of the reducer 51 is electrically connected to the first end of the driving roller coupling 52, the second end of the driving roller coupling 52 is movably connected to the driving roller, and a coupling solenoid valve 53 is arranged in the driving roller coupling 52, and the coupling solenoid valve 53 is electrically connected to the hydraulic valve station 2. The coupling solenoid valve 53 can control the drive roller coupling 52 to be off-axis or connected according to the instruction sent by the PLC controller 1, so that the reducer 51 and the drive roller 4 are disconnected or connected. When the reducer 51 and the drive roller 4 are disconnected, the drive roller 4 can be lowered. In order to drive the drive roller 4 to descend, the drive roller lifting device 5 also includes a hydraulic cylinder 54 and a solenoid valve station 55. The hydraulic cylinder 54 is placed below the drive roller 4, the first end of the hydraulic cylinder 54 is electrically connected to the hydraulic valve station 2, and the second end of the hydraulic cylinder 54 is electrically connected to the solenoid valve station 55. The PLC controller 1 supplies oil to the solenoid valve station 55 through the hydraulic valve station 2 and the hydraulic cylinder 54, so that the solenoid valve station 55 controls the drive roller 4 to descend. The number of drive rollers 4 in the control system is multiple, and each drive roller 4 corresponds to a drive roller lifting device 5. In the process of use, the first drive roller is taken as an example. When the cutting gun 3 of the fire cutting machine reaches the edge of the first drive roller, at this time, the first drive roller lifting device is used to control the first drive roller to descend, and the PLC controller 1 sends a descending instruction to the coupling solenoid valve 53. The coupling solenoid valve 53 controls the drive roller coupling 52 to be disengaged according to the descending instruction, and the reducer 51 and the drive roller 4 are disconnected. The PLC controller 1 supplies oil to the solenoid valve station 55 through the hydraulic valve station 2 and the hydraulic cylinder 54, so that the solenoid valve station 55 controls the first drive roller to descend. When the cutting gun 3 of the fire cutting machine passes through the first drive roller, at this time, the first drive roller lifting device is used to control the first drive roller to rise, and the PLC controller 1 sends an ascending instruction to the coupling solenoid valve 53. The coupling solenoid valve 53 controls the drive roller coupling 52 to be connected according to the ascending instruction, and the reducer 51 is connected to the first drive roller. The PLC controller 1 supplies oil to the solenoid valve station 55 through the hydraulic valve station 2 and the hydraulic cylinder 54, so that the solenoid valve station 55 controls the first drive roller to rise.When the cutting gun 3 of the fire cutter is located at the edge of the position of the second drive roller, the lifting and lowering of the second drive roller is controlled according to the method of the first drive roller, and so on, until the fire cutter completes cutting a steel billet, thereby realizing that each drive roller 4 is lowered and raised one by one according to the different positions of the cutting gun 3 of the fire cutter, and realizing that the cutting gun 3 of the fire cutter continues to cut the cast billet without interruption. In the prior art, the cutting gun needs to stop oxygen when passing the roller. If the cutting gun does not stop oxygen when passing the roller, the cutting gun is easy to cut the drive roller under the fire cutter, causing damage to the drive roller. The steel billet cannot be cut without oxygen, so that the steel billet generally needs to pass through 4 or 5 drive rollers in the prior art to be cut, and the cutting efficiency is low. In the present application, the cutting gun 3 of the fire cutter does not need to stop oxygen when passing the roller. The steel billet is cut without stopping oxygen. Compared with the prior art that the steel billet cannot be cut without stopping oxygen, the present application generally only needs 1 or 2 drive rollers to cut the steel billet, which reduces the cutting time and improves the cutting efficiency. The present application does not need to stop oxygen when passing the roller because the drive roller lifting device 5 can control the corresponding drive roller 4 to descend when passing the roller. The driving roller lifting device 5 controls the corresponding driving roller 4 to descend when the roller passes, so that when the cutting gun of the fire cutting machine passes the roller, the driving roller is at the lowest point, and the cutting gun of the fire cutting machine does not cut the driving roller, thereby reducing the damage to the driving roller. In this application, all driving rollers 4 are controlled to descend and rise one by one through the PLC controller 1, the coupling solenoid valve 53, the driving roller coupling 52, the hydraulic cylinder 54 and the solenoid valve station 55, so that the cutting gun 3 of the fire cutting machine continues to cut the ingot without interruption, thereby reducing the cutting time of the fire cutting machine and improving the cutting efficiency.

[0018] In order to better utilize the electromagnetic valve platform 55 to control the rise or fall of the driving roller 4, in the embodiment of the present application, an ascending electromagnetic valve 551 and a descending electromagnetic valve 552 are provided in the electromagnetic valve platform 55. Among them, the ascending electromagnetic valve 551 is used to control the rise of the driving roller 4, and the descending electromagnetic valve 552 is used to control the descent of the driving roller 4. When the hydraulic cylinder 54 supplies oil to the ascending electromagnetic valve 551 in the electromagnetic valve platform 55, the ascending electromagnetic valve 551 controls the rise of the driving roller 4. When the hydraulic cylinder 54 supplies oil to the descending electromagnetic valve 552 in the electromagnetic valve platform 55, the descending electromagnetic valve 552 controls the descent of the driving roller 4. Specifically, when the cutting gun 3 of the fire cutting machine reaches the edge of the driving roller 4, the PLC controller 1 sends a descending instruction to the coupling solenoid valve 53; the coupling solenoid valve 53 controls the driving roller coupling 52 to be disengaged according to the descending instruction, and the reducer 51 and the driving roller 4 are disconnected; the PLC controller 1 supplies oil to the descending solenoid valve 552 of the solenoid valve station 55 through the hydraulic valve station 2 and the hydraulic cylinder 54, so that the descending solenoid valve 552 of the solenoid valve station 55 controls the driving roller 4 to descend. When the cutting gun 3 of the fire cutting machine passes through the driving roller 4, the PLC controller 1 sends an ascending instruction to the coupling solenoid valve 53; the coupling solenoid valve 53 controls the driving roller coupling 52 to be connected according to the ascending instruction, and the reducer 51 and the driving roller 4 are connected; the PLC controller 1 supplies oil to the ascending solenoid valve 551 of the solenoid valve station 55 through the hydraulic valve station 2 and the hydraulic cylinder 54, so that the ascending solenoid valve 551 of the solenoid valve station 55 controls the driving roller 4 to ascend.

[0019] In order to know the position of the hydraulic cylinder 54, in the embodiment of the present application, a stopper 541 is provided on the outer side of the hydraulic cylinder 54. The stopper 541 is used to determine the position of the hydraulic cylinder 54. When the stopper 541 is at the first position, the hydraulic cylinder 54 is at the highest position, indicating that the driving roller 4 rises to the designated position A. When the stopper 541 is at the second position, the hydraulic cylinder 54 is at the lowest position, indicating that the driving roller 4 descends to the designated position B.

[0020] In order to better indicate the position of the driving roller 4, in the embodiment of the present application, the driving roller lifting device 5 further includes a limit switch 56, which is used to indicate the position of the driving roller 4, wherein the limit switch 56 includes an upper limit switch 561 and a lower limit switch 562, and the stopper 541 moves back and forth along the upper limit switch 561 and the lower limit switch 562. When the stopper 541 is located at the first position (i.e., located at the upper limit switch 561, at this time, the signal of the upper limit switch 561 is high level, and the signal of the lower limit switch 562 is low level), the driving roller 4 rises to the designated position A. When the stopper 541 is located at the second position (i.e., located at the lower limit switch 562, at this time, the signal of the upper limit switch 561 is low level, and the signal of the upper limit switch 562 is high level), the driving roller 4 descends to the designated position B. The limit switch 56 can not only better indicate the position of the driving roller 4, but also protect the hydraulic cylinder 54.

[0021] In order to provide support force for the driving roller 4, in the embodiment of the present application, the system further includes a driving roller base 6, and the hydraulic cylinder 54 is fixed to the driving roller base 6 through a bracket 57. The driving roller base 6 can not only provide support force for the driving roller 4 and prevent the driving roller from falling to the ground, but also provide support force for the hydraulic cylinder 54.

[0022] In order to better control the reducer 51, in the embodiment of the present application, the driving roller lifting device 5 further includes a frequency converter 58 and a motor 59. The first end of the frequency converter 58 is electrically connected to the PLC controller 1, and the second end of the frequency converter 58 is electrically connected to the first end of the reducer 51; the first end of the motor 59 is electrically connected to the first end of the frequency converter 58, and the second end of the motor 59 is electrically connected to the first end of the reducer 51.

[0023] In the embodiment of the present application, in addition to providing a control system for continuous casting machine fire cutting machine cutting, a control method for continuous casting machine fire cutting machine cutting is also provided. The control method includes:

[0024] When the cutting gun of the flame cutting machine reaches the edge of the driving roller, the PLC controller sends a descending command to the coupling solenoid valve.

[0025] The coupling solenoid valve controls the driving roller coupling to decouple according to the descending command, and the reducer and driving roller are disconnected.

[0026] The PLC controller supplies oil to the solenoid valve station through the hydraulic valve station and the hydraulic cylinder, so that the solenoid valve station controls the driving roller to descend.

[0027] When the cutting gun of the fire cutting machine passes through the driving roller, the PLC controller sends an ascending command to the coupling solenoid valve.

[0028] The coupling solenoid valve controls the driving roller coupling shaft according to the rising command, and the reducer is connected to the driving roller.

[0029] The PLC controller supplies oil to the solenoid valve station through the hydraulic valve station and the hydraulic cylinder, so that the solenoid valve station controls the driving roller to rise.

[0030] Since in the embodiment of the present application, the control system of the continuous casting machine fire cutting machine includes multiple drive rollers, each drive roller corresponds to a drive roller lifting device. For example, the first drive roller, the second drive roller and the third drive roller, ..., the Nth drive roller, the first drive roller lifting device, the second drive roller lifting device and the third drive roller lifting device, ..., the Nth drive roller lifting device. The first drive roller lifting device includes a first reducer, a first drive roller coupling, a first coupling solenoid valve, a first hydraulic cylinder and a first solenoid valve station; the second drive roller lifting device includes a second reducer, a second drive roller coupling, a second coupling solenoid valve, a second hydraulic cylinder and a second solenoid valve station; and so on...

[0031] Taking the first driving roller as an example, the control process of the continuous casting machine fire cutting machine is as follows:

[0032] When the cutting gun of the fire cutting machine reaches the edge of the first driving roller, the PLC controller sends a descending command to the first coupling solenoid valve.

[0033] The first coupling solenoid valve controls the first driving roller coupling to decouple according to the descending instruction, and the first reducer and the first driving roller are disconnected.

[0034] The PLC controller supplies oil to the first solenoid valve station through the hydraulic valve station and the first hydraulic cylinder, so that the first solenoid valve station controls the first driving roller to descend.

[0035] When the cutting gun of the fire cutting machine passes through the first driving roller, the PLC controller sends an ascending instruction to the first coupling solenoid valve.

[0036] The first coupling solenoid valve controls the first driving roller coupling shaft according to the rising instruction, and the first reducer is connected to the first driving roller.

[0037] The PLC controller supplies oil to the first solenoid valve station through the hydraulic valve station and the first hydraulic cylinder, so that the first solenoid valve station controls the driving roller to rise.

[0038] When the cutting gun of the fire cutting machine reaches the edge of the second driving roller, the control system continues to control the lifting and lowering of the second driving roller according to the control method taking the first driving roller as an example, and so on, until the fire cutting machine completes cutting a steel billet, thereby achieving the lowering and raising of each driving roller one by one according to the different positions of the cutting gun of the fire cutting machine, so that the cutting gun of the fire cutting machine continues to cut the ingot without interruption.

[0039] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A control system for continuous casting machine fire cutting machine cutting, characterized in that: The invention comprises a PLC controller (1), a hydraulic valve station (2), a fire cutting machine cutting gun (3), a driving roller (4) and a driving roller lifting device (5), wherein the hydraulic valve station (2), the fire cutting machine cutting gun (3) and the driving roller lifting device (5) are electrically connected to the PLC controller (1) respectively, the fire cutting machine cutting gun (3) is placed above the driving roller (4), and the driving roller lifting device (5) is electrically connected to the driving roller (4), wherein: The driving roller lifting device (5) is used to control the driving roller (4) to rise or fall, and the driving roller lifting device (5) comprises a reducer (51) and a driving roller coupling (52), the PLC controller (1) is electrically connected to a first end of the reducer (51), the second end of the reducer (51) is electrically connected to a first end of the driving roller coupling (52), the second end of the driving roller coupling (52) is movably connected to the driving roller (4), and a coupling solenoid valve (53) is arranged in the driving roller coupling (52), and the coupling solenoid valve (53) is electrically connected to the hydraulic valve station (2); The driving roller lifting device (5) further comprises a hydraulic cylinder (54) and a solenoid valve station (55), wherein the hydraulic cylinder (54) is disposed below the driving roller (4), a first end of the hydraulic cylinder (54) is electrically connected to the hydraulic valve station (2), and a second end of the hydraulic cylinder (54) is electrically connected to the solenoid valve station (55); There are a plurality of driving rollers (4), and each driving roller (4) corresponds to one driving roller lifting device (5).

2. The control system according to claim 1, characterized in that: The solenoid valve platform (55) is provided with an ascending solenoid valve (551) and a descending solenoid valve (552); the ascending solenoid valve (551) is used to control the ascending of the driving roller (4), and the descending solenoid valve (552) is used to control the descending of the driving roller (4).

3. The control system according to claim 1, characterized in that: A stop ruler (541) is arranged on the outside of the hydraulic cylinder (54), and the stop ruler (541) is used to determine the position of the hydraulic cylinder (54).

4. The control system according to claim 3, characterized in that: The driving roller lifting device (5) further comprises a limit switch (56), wherein the limit switch (56) is used to indicate the position of the driving roller (4), wherein: The limit switch (56) comprises an upper limit switch (561) and a lower limit switch (562), and the stop ruler (541) moves back and forth along the upper limit switch (561) and the lower limit switch (562).

5. The control system according to claim 1, characterized in that: The system also includes a driving roller base (6), and the hydraulic cylinder (54) is fixed to the driving roller base (6) via a bracket (57).

6. The control system according to claim 1, characterized in that: The driving roller lifting device (5) further comprises a frequency converter (58), a first end of the frequency converter (58) being electrically connected to the PLC controller (1), and a second end of the frequency converter (58) being electrically connected to a first end of the reducer (51).

7. The control system according to claim 6, characterized in that: The driving roller lifting device (5) further comprises an electric motor (59), a first end of the electric motor (59) being electrically connected to a first end of the frequency converter (58), and a second end of the electric motor (59) being electrically connected to a first end of the reducer (51).

8. A method for controlling the cutting of a continuous casting machine flame cutting machine, characterized in that: The method is applied to the control system according to any one of claims 1 to 7, and the method comprises: When the cutting gun of the flame cutting machine reaches the edge of the driving roller, the PLC controller sends a descending command to the coupling solenoid valve; The coupling solenoid valve controls the driving roller coupling to decouple according to the descending instruction, and the reducer and the driving roller are disconnected; The PLC controller supplies oil to the solenoid valve station through the hydraulic valve station and the hydraulic cylinder, so that the solenoid valve station controls the driving roller to descend; When the cutting gun of the fire cutting machine passes through the driving roller, the PLC controller sends a rising instruction to the coupling solenoid valve; The coupling solenoid valve controls the driving roller coupling shaft according to the rising instruction, and the reducer is connected to the driving roller; The PLC controller supplies oil to the solenoid valve station through the hydraulic valve station and the hydraulic cylinder, so that the solenoid valve station controls the driving roller to rise.

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