Long nozzle dismounting device

Abstract

The utility model provides a long nozzle dismounting and mounting device, which relates to the technical field of steelmaking production and is characterized in that the position of a nozzle placed on a backing ring is adjusted through three-axis rotation and one-axis pitching swing; the pitching oil cylinder provides oil through the oil supply pipeline, oil pressure drives the pitching oil cylinder to stretch out and draw back so as to drive the driving force arm assembly to swing in a pitching mode, and when the oil supply pipeline provides oil pressure, the pitching oil cylinder has the trend of upwards driving the driving force arm assembly so that the water gap can be attached to the steel ladle, and the steel ladle can be attached all the time when rising. When the steel ladle pushes the water gap downwards, the steel ladle is pressed downwards to drive the force arm assembly to swing downwards, at the moment, the oil pressure of the pitching oil cylinder is too large, and at the moment, pressure is released through the pressure release valve; in this way, synchronous movement of the water gap along with displacement of the steel ladle is achieved, the control process is simple, and a complex logic link does not need to be arranged.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking production, and further relates to a shroud disassembling and assembling device. Background Art

[0002] At present, the long nozzle of the continuous casting platform of the steel plant is disassembled and assembled by workers. The workers operate the manual disassembly and assembly device on site to complete the replacement of the long nozzle. The on-site working environment is very harsh. The workers need to operate the manual disassembly and assembly device directly below the ladle filled with 1500℃ molten steel, and quickly remove the long nozzle from the ladle, and then use their personal experience to align the new long nozzle with the ladle outlet. Molten steel splashes out of the molten steel tank from time to time, and steel slag stuck on the molten steel tank falls off, and the workers themselves are at risk of being scalded and hit.

[0003] For those skilled in the art, how to replace manual work in disassembling and assembling the nozzle is a technical problem that needs to be solved at present. Utility Model Content

[0004] The core of the utility model is to provide a long shroud disassembly and assembly device, which can adjust the position as the ladle moves. When the ladle is pressed down, the oil pressure is balanced by pressure relief to prevent damage. The control logic is simple. The specific scheme is as follows:

[0005] A long shroud disassembly and assembly device, comprising a base assembly, a two-axis swing arm, a driving force arm assembly, a rotating assembly, and a support ring;

[0006] The two-axis swing arm is rotatably arranged on the base assembly; the driving force arm assembly includes a force arm bracket, an outer sleeve, an inner rod, and a pitch cylinder, and the force arm bracket is rotatably arranged on the two-axis swing arm;

[0007] The outer sleeve is arranged on the lever arm bracket for pitching and swinging; the inner rod is coaxially installed in the outer sleeve and driven by the rotating assembly to rotate; the outer sleeve is driven by the pitch cylinder to achieve pitching movement; the support ring is installed at the far end of the inner rod for placing the water outlet;

[0008] The pitch cylinder supplies oil through an oil supply pipeline so that the pitch cylinder has a tendency to drive the driving arm assembly upward so that the water outlet is attached to the ladle; a pressure relief valve is arranged on the oil supply pipeline, and when the ladle pushes the water outlet downward, the driving arm assembly swings downward and releases pressure through the pressure relief valve.

[0009] Optionally, the support ring is rotatably mounted on the inner rod, and the center of the support ring is set on the rotating shaft. When the water outlet is placed on the support ring, the center of gravity of the water outlet is located below the rotating shaft, so that the support ring remains horizontal when the driving force arm assembly swings.

[0010] Optionally, the base assembly and the two-axis swing arm are driven by a motor; the two-axis swing arm and the force arm bracket are driven by a motor.

[0011] Optionally, a clutch is provided between the base assembly and the two-axis swing arm; a clutch is provided between the two-axis swing arm and the force arm bracket;

[0012] When the clutch is switched, the motor transmission is cut off, thus achieving manual drive.

[0013] Optionally, the rotating assembly drives the inner rod to rotate via a worm gear; the worm gear can be driven to rotate by a motor;

[0014] The worm is arranged to be used for a hand wheel for manual operation.

[0015] Optionally, encoders for detecting angles are respectively arranged between the base assembly and the two-axis swing arm, between the two-axis swing arm and the force arm bracket, and between the outer sleeve and the inner rod.

[0016] Optionally, when the water inlet is moved toward the ladle, the oil pressure of the pitch cylinder corresponds to the angle detected by the encoder between the outer sleeve and the inner rod.

[0017] Optionally, an argon joint is provided on the inner rod, and the argon joint is connected to an argon pipeline for providing argon to the water inlet.

[0018] Optionally, the rotating shaft between the two-axis swing arm and the base assembly, and the rotating shaft between the force arm bracket and the two-axis swing arm are arranged vertically and parallel.

[0019] The utility model provides a long water outlet disassembly and assembly device, wherein a two-axis swing arm is rotatably arranged on a base assembly, and a force arm bracket is rotatably arranged on the two-axis swing arm to adjust the left and right and front and back positions of the water outlet; an outer sleeve is pitched and swung on the force arm bracket to adjust the vertical height of the water outlet; an inner rod is coaxially rotatably installed on the outer sleeve to adjust the torsion of the water outlet; the position of the water outlet placed on the support ring is adjusted by three-axis rotation and one-axis pitching and swinging; the pitching cylinder provides oil through an oil supply pipeline, and the oil pressure drives the pitching cylinder to extend and retract, thereby driving the driving force arm assembly to pitch and swing, and when the oil supply pipeline provides oil pressure, the pitching cylinder has a tendency to drive the driving force arm assembly upward, so that the water outlet is attached to the ladle, and the ladle is always attached when it rises; when the ladle pushes the water outlet downward, the ladle is pressed downward to drive the force arm assembly to swing downward, and at this time, the oil pressure of the pitching cylinder will be too large, and the pressure will be released through the pressure relief valve; thereby, the water outlet is realized to move synchronously with the displacement of the ladle, and the control process is relatively simple, and there is no need to set a complex logic link. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is an overall axonometric schematic diagram of a specific embodiment of the long shroud disassembly and assembly device provided by the utility model;

[0022] Figure 2 A schematic diagram of the on-site environment for the actual application of the long shroud disassembly and assembly device provided by the utility model;

[0023] Figure 3 is a front cross-sectional view of the base assembly;

[0024] Figure 4 is a top view of the base assembly;

[0025] Figure 5 It is an axonometric diagram of a two-axis swing arm;

[0026] Figure 6 It is the front cross-sectional view of the two-axis swing arm;

[0027] Figure 7 It is a top view of the two-axis swing arm;

[0028] Figure 8 It is a side cross-sectional view of the two-axis swing arm;

[0029] Fig. 9 It is a front view of the driving arm assembly;

[0030] Fig.10 A top view of the driving arm assembly;

[0031] Fig.11 is a side view of the driving arm assembly;

[0032] Fig.12 is an axonometric diagram of a rotating assembly;

[0033] Fig.13 is a front view schematic diagram of a rotating assembly;

[0034] Fig.14 A schematic side view of a rotating assembly.

[0035] The figure includes:

[0036] Base assembly 1, base motor 11, base reducer 12, base clutch 13, base bearing 14, base encoder 15, base indicator 16, two-axis swing arm 2, swing arm motor 21, swing arm reducer 22, swing arm clutch 23, swing arm bearing 24, swing arm encoder 25, swing arm indicator 26, driving force arm assembly 3, force arm bracket 31, outer sleeve 32, inner rod 33, pitch cylinder 34, argon gas joint 35, rotating assembly 4, rotating motor 41, rotating handwheel 42, handrail 43, support ring 5, support ring rotating shaft 51, water outlet 6. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the long shroud disassembly and assembly device of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Combination Figure 1 , Figure 2 As shown, the utility model provides a long shroud disassembly and assembly device, including a base assembly 1, a two-axis swing arm 2, a driving force arm assembly 3, a rotating assembly 4, a support ring 5 and other structures. Figure 2 The A here represents the long nozzle disassembly and assembly device, which is used in the ladle (big ladle) dumping process.

[0039] The base assembly 1 is a supporting structure for supporting other structures arranged thereon. The two-axis swing arm 2 is rotatably arranged on the base assembly 1, and the two-axis swing arm 2 can rotate relative to the base assembly 1; the rotation of the two-axis swing arm 2 relative to the base assembly 1 can be regarded as the first-dimensional rotation of the entire long shroud disassembly and assembly device.

[0040] Combination Fig. 9 , Fig.10 , Fig.11 As shown, the driving lever arm assembly 3 includes a lever arm bracket 31, an outer sleeve 32, an inner rod 33, and a pitch cylinder 34, wherein the lever arm bracket 31 is rotatably arranged on the two-axis swing arm 2, and the lever arm bracket 31 can rotate relative to the two-axis swing arm 2; the rotation of the lever arm bracket 31 relative to the two-axis swing arm 2 can be regarded as the second-dimensional rotation of the entire long water outlet disassembly and assembly device.

[0041] The outer sleeve 32 is arranged on the lever arm support 31 for pitching and swinging, that is, the outer sleeve 32 can swing around the horizontal axis relative to the lever arm support 31, so as to realize the up and down swinging of the outer sleeve 32 and the inner rod 33, that is, pitching motion. The pitching motion of the outer sleeve 32 relative to the lever arm support 31 can be regarded as the rotation of the third dimension of the entire long nozzle disassembly and assembly device.

[0042] The inner rod 33 is coaxially rotatably installed inside the outer shell 32 and driven by the rotating assembly 4 to realize rotation. The inner rod 33 and the outer shell 32 are coaxially arranged, and the inner rod 33 is inserted inside the outer shell 32. The inner rod 33 and the outer shell 32 can rotate relative to each other, which mainly refers to the rotation of the inner rod 33 relative to the outer shell 32. The rotation of the inner rod 33 relative to the outer shell 32 can be regarded as the fourth dimension of rotation of the entire long nozzle disassembly and assembly device.

[0043] The support ring 5 is installed at the far end of the inner rod 33 and is used to place the nozzle 6, which is used to receive and guide the molten steel falling from the ladle.

[0044] The outer sleeve 32 is driven by the pitch cylinder 34 to achieve pitching motion. When the pitch cylinder 34 is extended, the outer sleeve 32 is rotated and lifted upward. When the pitch cylinder 34 is shortened, the outer sleeve 32 is rotated and dropped downward. The pitch cylinder 34 is provided with oil through the oil supply pipeline. Generally, oil is injected into the rodless chamber of the pitch cylinder 34, so that the pitch cylinder 34 has a tendency to drive the driving arm assembly 3 upward. Driven by the oil, the pitch cylinder 34 shows an upward lifting tendency, so that the water inlet 6 is attached to the ladle above. A pressure relief valve is arranged on the oil supply pipeline of the pitch cylinder 34. When the ladle pushes the water inlet 6 downward, the driving arm assembly 3 swings downward, and the driving arm assembly 3 compresses the pitch cylinder 34, causing the oil pressure of the oil supply pipeline to rise. When the maximum pressure of the pressure relief valve is exceeded, the pressure is released through the pressure relief valve, and the excess oil is discharged into the oil tank to avoid excessive oil pressure in the oil supply pipeline, and the oil pressure is always kept within a reasonable range.

[0045] The third dimension of rotation of the utility model uses the pitch cylinder 34 to control the up and down movement of the nozzle 6. It is only necessary to pre-apply a certain oil pressure to the pitch cylinder 34 so that the inner rod 33 has a tendency to lift upward, ensuring that the support ring 5 drives the nozzle 6 to fit the ladle. There is no need to consider the situation where the inner rod 33 falls due to the descent of the ladle. After the descent, the excessive oil pressure is automatically discharged through the pressure relief valve. There is no need to set different control levels according to the rise and fall of the ladle, and it has a simpler control logic.

[0046] The rotation of the first dimension and the rotation of the second dimension can adjust the horizontal position of the support ring 5 and the nozzle 6, and can realize two-dimensional adjustment. The rotation of the fourth dimension can adjust the tilt angle of the support ring 5 and the nozzle 6 to the left or right. The long nozzle disassembly and assembly device provided by the utility model can realize four-dimensional rotation adjustment, so that the nozzle 6 and the ladle can realize follow-up adjustment, ensuring the synchronization of the position of the nozzle 6 and the displacement of the ladle, and the control logic is simple and easy to realize.

[0047] On the basis of the above scheme, the support ring 5 of the utility model is rotatably mounted on the inner rod 33, combined with Fig. 9As shown, the support ring rotating shaft 51 is shown, and the support ring rotating shaft 51 connecting the support ring 5 and the inner rod 33 is perpendicular to the axis of the inner rod 33, and keeps the rotating shaft connecting the support ring 5 and the inner rod 33 horizontal. The center of the support ring 5 is set on the rotating shaft, and when the nozzle 6 is placed on the support ring 5, the center of gravity of the nozzle 6 is located below the rotating shaft, so that when the driving force arm assembly 3 swings, the support ring 5 remains horizontal, and no matter the driving force arm assembly 3 is lifted up or dropped down, the support ring 5 remains horizontal, thereby ensuring that the nozzle 6 remains vertical, forming a tumbler structure.

[0048] The base assembly 1 and the two-axis swing arm 2 are driven by a motor; Figure 3 , Figure 4 As shown, a base motor 11 and a base reducer 12 are shown, wherein the output shaft of the base motor 11 is connected to the base reducer 12, and the base reducer 12 outputs rotation after deceleration. The two-axis swing arm 2 is rotatably mounted on a base bearing bearing 14 provided on the base assembly 1.

[0049] The two-axis swing arm 2 and the arm bracket 31 are driven by a motor. Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, the swing arm motor 21 and the swing arm reducer 22 are shown, the output shaft of the swing arm motor 21 is connected to the swing arm reducer 22, and the swing arm reducer 22 outputs rotation after deceleration. The force arm bracket 31 is installed on the swing arm bearing bearing 24 (slewing bearing) provided on the base assembly 1.

[0050] In one embodiment, a clutch is provided between the base assembly 1 and the two-axis swing arm 2; a clutch is provided between the two-axis swing arm 2 and the force arm bracket 31; Figure 3 As shown, the base assembly 1 is provided with a base clutch 13; Figure 6 , Figure 8 As shown, the two-axis swing arm 2 is provided with a swing arm clutch 23. When the clutch is switched, the motor transmission is cut off, thereby realizing manual drive, that is, the base clutch 13 can control whether the base assembly 1 and the two-axis swing arm 2 are transmitted or not, and the swing arm clutch 23 can control whether the two-axis swing arm 2 and the force arm bracket 31 are transmitted or not. The long water outlet disassembly and assembly device provided by the utility model has two working modes, namely, automatic mode and manual mode. It is driven by a motor in automatic mode and manually controlled in manual mode, thereby realizing rotation in the first dimension and the second dimension. In general, automatic mode control is used. When a motor or other mechanism fails, the corresponding position can be switched to manual mode to ensure normal use.

[0051] The rotating assembly 4 drives the inner rod 33 to rotate through the worm gear; the worm gear can be driven to rotate by the motor to achieve automatic drive. The worm gear is provided for a hand wheel for manual operation. Fig.12 , Fig.13 , Fig.14 As shown, a rotating motor 41, a rotating hand wheel 42 and an armrest 43 are provided on the rotating assembly 4. The rotating motor 41 drives the worm, thereby rotating the worm wheel. The worm wheel is circumferentially fixed on the inner rod 33, so that the inner rod 33 can automatically rotate under the control of the motor and automatically adjust the angle. When the motor fails, the operator can turn the hand wheel 42 to control it. Since the worm gear structure has a self-locking function, there is no need to set a clutch.

[0052] Furthermore, the utility model provides encoders for detecting angles between the base assembly 1 and the two-axis swing arm 2, between the two-axis swing arm 2 and the force arm bracket 31, and between the outer sleeve 32 and the inner rod 33. By detecting the angles with the encoders, accurate positioning control can be achieved. Figure 3 As shown, the base encoder 15 provided in the base assembly 1 is shown, combined with Figure 6 As shown, there is shown a swing arm encoder 25 provided with a two-axis swing arm 2. By setting the encoder, the rotation angles of the first dimension, the second dimension, and the fourth dimension are detected.

[0053] In addition, an angle indicator can be set on the outside of the corresponding mechanism to facilitate the operator to grasp the rotation angle, and the angle can be controlled in manual mode. Figure 4 As shown, the base indicator 16 provided on the base assembly 1 is shown, and the base indicator 16 can indicate the rotation angle of the two-axis swing arm 2; Figure 7 As shown, a swing arm indicator 26 provided on the two-axis swing arm 2 is shown, and the swing arm indicator 26 can indicate the rotation angle of the force arm bracket 31.

[0054] After the water inlet 6 is docked with the ladle, the position of the water inlet 6 needs to be adjusted to keep following the ladle. When the new water inlet 6 is moved toward the ladle, the oil pressure of the pitch cylinder 34 corresponds to the angle detected by the encoder between the outer sleeve 32 and the inner rod 33. That is, the third dimension adopts a special hydraulic control logic, and the hydraulic pressure can be adjusted according to the angle of the encoder corresponding to the third dimension, so that the equipment runs more smoothly; and in the manual operation state, hydraulic assistance is performed to make the front end lifting operation more convenient. The oil pressure control can be used in automatic mode and manual mode, so that the closer the water inlet 6 is to the ladle, the slower its movement speed, and the change in speed maintains a smooth transition.

[0055] Combination Fig. 9 , Fig.10 As shown, an argon connector 35 is provided on the inner rod 33, and the argon connector 35 is connected to an argon pipeline for providing argon to the water inlet 6, which plays a protective role when the molten steel is poured to prevent the molten steel from being oxidized.

[0056] Combination Figure 1As shown, in the present invention, the rotating shaft between the two-axis swing arm 2 and the base assembly 1, and the rotating shaft between the force arm bracket 31 and the two-axis swing arm 2 are arranged vertically and parallelly, and the present invention does not exclude the use of a non-vertical inclined arrangement.

[0057] The workflow of replacing the ladle shroud with a new one can be carried out as follows:

[0058] 1) Manually break the bag of the long nozzle, place it on the support ring 5, and manually connect the argon joint 35.

[0059] 2) Manually click the "Fill Water Inlet" button on the operating console (or automatically start the water inlet filling process through signal interaction).

[0060] 3) The long shroud disassembly and assembly device moves the long shroud to below the sealing ring automatic installation mechanism and installs a new sealing ring.

[0061] 4) The intelligent operating arm places the long water inlet with the sealing ring installed under the camera to confirm that the installation is complete;

[0062] 5) Wait for the ladle to turn around, the main robot system identifies the casting position of the lower nozzle, sends the coordinates to the long nozzle disassembly and assembly device, and then returns to its position.

[0063] 6) The long shroud disassembly and assembly device receives the shroud position coordinates and automatically installs the long shroud in place.

[0064] Function summary:

[0065] Combination Fig. 9 , Fig.10 , Fig.11 The pitch cylinder 34 of the driving arm assembly 3 can make the outer cover 32 and the inner rod 33 move up and down, and the encoder inside can feedback the angle of the action so as to control the action to the required angle. The support ring 5 is movable, which can keep the water outlet 6 in a horizontal state.

[0066] Combination Fig.12 , Fig.13 , Fig.14 The rotating assembly 4 can control the rotation of the nozzle 6. The rotating motor 41 can be a servo motor, and the output force is transmitted to the rotating worm reducer and then to the adapter shaft to realize the rotation of the nozzle 6 on the support ring weldment. The precise control of the rotation amount is achieved by the encoder component to achieve precise positioning. In the case of power outage and power failure, manual operation can also be performed by rotating the hand wheel 42 for manual control.

[0067] Combination Figure 6 , Figure 7 , Figure 8, the two-axis swing arm 2 can drive the driving force arm assembly 3 and the rotating assembly 4 to rotate. The two-axis swing arm 2 is driven by the swing arm motor 21 (servo motor can be used) in the pinion assembly set inside it, and the transmission is transmitted to the pinion of the pinion assembly, and then transmitted to the large gear corresponding to the swing arm bearing bearing 24. There is a gap between the transmissions, and there is an error in the transmission, so the encoder assembly is used for precise positioning. There is a clutch assembly inside the pinion assembly, which can be manually disconnected and the rotation can be manually controlled. Manual control is also precisely positioned through the base encoder assembly.

[0068] Combination Figure 3 , Figure 4 The base assembly 1 can drive the two-axis swing arm 2, the driving force arm assembly 3, and the rotating assembly 4 to rotate. The base assembly 1 is driven by the base motor 11 (servo motor can be used) in the pinion assembly, which is transmitted to the pinion in the pinion assembly, and then transmitted to the large gear corresponding to the base bearing bearing 14 (slewing bearing). There is a gap between the transmissions and there is an error in the transmission, so the base encoder 15 is used for precise positioning. There is a clutch assembly inside the pinion assembly, which can be manually disconnected and the rotation can be manually controlled. Manual operation is also precisely positioned by the base encoder assembly.

[0069] The device can realize automatic disassembly and assembly of the shroud through the action of four axes. The utility model also provides semi-automatic disassembly and assembly of the shroud and manual disassembly and assembly of the shroud. The semi-automatic disassembly and assembly mode can be manually intervened to prevent inaccurate recognition. The manual mode can manually realize the disassembly and assembly of the shroud in special circumstances when the automatic mode fails.

[0070] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shroud disassembly and assembly device, characterized in that: It comprises a base assembly (1), a two-axis swing arm (2), a driving force arm assembly (3), a rotating assembly (4), and a support ring (5); The two-axis swing arm (2) is rotatably mounted on the base assembly (1); the driving force arm assembly (3) comprises a force arm bracket (31), an outer sleeve (32), an inner rod (33), and a pitch cylinder (34); the force arm bracket (31) is rotatably mounted on the two-axis swing arm (2); The outer sleeve (32) is arranged on the lever support (31) for pitching and swinging; the inner rod (33) is coaxially rotatably installed inside the outer sleeve (32) and is driven by the rotating assembly (4) to achieve rotation; the outer sleeve (32) is driven by the pitch cylinder (34) to achieve pitching movement; the support ring (5) is installed at the far end of the inner rod (33) and is used to place the water inlet (6); The pitch cylinder (34) supplies oil through an oil supply pipeline, so that the pitch cylinder (34) has a tendency to drive the driving arm assembly (3) upward, so that the water inlet (6) is attached to the ladle; a pressure relief valve is arranged on the oil supply pipeline, and when the ladle pushes the water inlet (6) downward, the driving arm assembly (3) swings downward and releases pressure through the pressure relief valve.

2. The shroud disassembling and assembling device according to claim 1, characterized in that: The support ring (5) is rotatably mounted on the inner rod (33), and the center of the support ring (5) is arranged on the rotating shaft. When the water outlet (6) is placed on the support ring (5), the center of gravity of the water outlet (6) is located below the rotating shaft, so that when the driving force arm assembly (3) swings, the support ring (5) remains horizontal.

3. The shroud disassembling and assembling device according to claim 1, characterized in that: The base assembly (1) and the two-axis swing arm (2) are driven by a motor; and the two-axis swing arm (2) and the force arm bracket (31) are driven by a motor.

4. The shroud disassembling and assembling device according to claim 3, characterized in that: A clutch is provided between the base assembly (1) and the two-axis swing arm (2); and a clutch is provided between the two-axis swing arm (2) and the force arm bracket (31); When the clutch is switched, the motor transmission is cut off, thus achieving manual drive.

5. The shroud disassembling and assembling device according to claim 1, characterized in that: The rotating assembly (4) drives the inner rod (33) to rotate via a worm gear; the worm gear can be driven to rotate by a motor; The worm is arranged to be used as a hand wheel for manual operation.

6. The shroud disassembling and assembling device according to claim 1, characterized in that: Encoders for detecting angles are respectively arranged between the base assembly (1) and the two-axis swing arm (2), between the two-axis swing arm (2) and the force arm bracket (31), and between the outer sleeve (32) and the inner rod (33).

7. The shroud disassembling and assembling device according to claim 6, characterized in that: When the water inlet (6) is moved toward the ladle, the oil pressure of the pitch cylinder (34) corresponds to the angle detected by the encoder between the outer sleeve (32) and the inner rod (33).

8. The shroud disassembling and assembling device according to claim 1, characterized in that: An argon joint (35) is provided on the inner rod (33), and the argon joint (35) is connected to an argon pipeline and is used to supply argon to the water inlet (6).

9. The shroud disassembling and assembling device according to claim 1, characterized in that: The rotating shaft between the two-axis swing arm (2) and the base assembly (1), and the rotating shaft between the force arm bracket (31) and the two-axis swing arm (2) are arranged vertically and in parallel.

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