A gantry type full-molten bath refining and slagging device

Abstract

The application discloses a gantry type full-molten-bath refining and slagging device, which comprises a guide rail and a cantilever support slidably connected to the guide rail, a telescopic working arm rotatably connected to the bottom of the cantilever support, the working arm being used for hanging a refining hanger or a slagging hanger, a longitudinal supporting assembly and a transverse supporting assembly arranged on the cantilever support, the longitudinal supporting assembly comprising a first guide wheel movably arranged and a second guide wheel fixedly arranged, the first guide wheel and the second guide wheel being located on different sides of the guide rail, and the transverse supporting assembly comprising a third guide wheel, the third guide wheel being located above the top surface of the guide rail or below the bottom surface of the guide rail. In the application, the cantilever support of the gantry type full-molten-bath refining and slagging device can move along the guide rail of the gantry support, the working arm on the cantilever support is telescopic and rotatable, the refining head and the slag rake at the end of the working arm can move in a large area inside the molten bath, the slag rake is angle-adjustable, and the full-molten-bath coverage of the refining operation and the slagging operation is realized.

Description

Technical Field

[0001] This invention relates to the field of smelting furnace technology, and in particular to a gantry-type full-melting pool refining slag removal device. Background Technology

[0002] In the aluminum alloy smelting process, to obtain high-quality molten aluminum to meet the requirements of subsequent casting and rolling processes, the melt must be refined to remove hydrogen (accounting for approximately 70-90% of the gas), inclusions, and harmful elements. Currently, refining operations in aluminum melting furnaces and holding furnaces mainly rely on two methods: one is mobile powder spraying refining using manual labor or equipment carrying nozzles; the other is refining using a fixed, inclined mechanical rotor positioned on the side or in front of the furnace.

[0003] However, the above methods have significant shortcomings in practical applications. While mobile nozzle refining offers a degree of mobility, manual operation is extremely labor-intensive and it's difficult to ensure complete coverage of the furnace, resulting in blind spots. Furthermore, the short contact time between the refining agent and molten aluminum leads to incomplete reaction and low agent utilization, making it difficult to guarantee effective refining. Even when using equipment to replace manual nozzle movement reduces manpower, the refining principle remains unchanged, and the aforementioned defects such as incomplete coverage, short reaction time, and low agent utilization persist. On the other hand, furnace-side or furnace-front inclined rotor refining equipment, typically used in conjunction with furnace-bottom electromagnetic stirring devices, has its refining effect limited to a localized area around the rotor, failing to achieve uniform treatment of the entire furnace's molten aluminum. Moreover, this method has strict requirements on the molten aluminum level within the furnace; when the level is too low, the rotor cannot effectively immerse itself or form a circulating flow field, leading to refining process failure. These numerous inconveniences and limitations affect the refining efficiency and quality stability of aluminum alloy smelting. Summary of the Invention

[0004] This invention addresses the inconvenience of slag removal in aluminum melting furnace refining in existing technologies by providing a gantry-type full-melting-pool refining slag removal device. The refining head and slag rake can move over a large area in the aluminum melting furnace, enabling multi-directional refining and slag removal operations inside the furnace.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A gantry-type full-melting-pool refining slag removal device includes a gantry support, a cantilever support slidably connected to the guide rails of the gantry support, and a working arm for attaching refining components or slag removal components. The cantilever support is equipped with a longitudinal support assembly and a transverse support assembly. The longitudinal support assembly includes a movable first guide wheel and a fixed second guide wheel, with the rotation axis of the first guide wheel parallel to that of the second guide wheel. The first and second guide wheels are located on different sides of the guide rail, and the first guide wheel adjusts the longitudinal torque between the cantilever support and the guide rail by changing the distance between the guide rails. The transverse support assembly includes a third guide wheel, located above the top surface or below the bottom surface of the guide rail, with its rotation axis perpendicular to that of the first guide wheel.

[0006] Preferably, multiple first guide wheels form a first guide wheel group, multiple second guide wheels form a second guide wheel group, and multiple third guide wheels form a third guide wheel group. The first guide wheel group, the second guide wheel group, and the third guide wheel group are combined to form an n-shaped torsional limit on the top of the guide rail.

[0007] Preferably, the third guide wheels in the third guide wheel group are located at the same horizontal position, and the number of the third guide wheel groups is at least two, with at least one third guide wheel group located above the top surface of the guide rail and at least one third guide wheel group located below the bottom surface of the guide rail.

[0008] Preferably, the working arm is internally provided with an active drive shaft, which is rotatably connected to the working arm. The end of the active drive shaft is connected to a first docking shaft, which is rotatably connected to the end of the working arm. Both the refining hanger and the slag removal hanger are provided with a hanging rod for hanging the working arm. The hanging rod includes a support arm, and the docking end of the support arm is provided with a second docking shaft, which is rotatably connected to the support arm. The first docking shaft is provided with a non-circular insertion hole for inserting the second docking shaft.

[0009] Preferably, the support arm of the slag removal device is equipped with a nut, a rotating screw, and a telescopic rod. The rotating screw is connected to the second mating shaft, the nut is screwed to the rotating screw, the telescopic rod is fixedly connected to the nut and sleeved on the outside of the rotating screw, and the end of the telescopic rod extends out from the support arm. A connecting seat is fixedly installed at the end of the support arm, and a first rocker arm of a slag rake is rotatably connected to the connecting seat. The first rocker arm is rotatably connected to the first end of a second rocker arm through a rotating pin, and the second end of the second rocker arm is rotatably connected to the end of a telescopic rod through a second connecting pin.

[0010] Preferably, the slag rake is provided with a leakage hole.

[0011] Preferably, the connecting end of the support arm is provided with a contact plate, the contact plate is provided with at least two positioning pins, the end of the working arm is provided with a sealing plate, the sealing plate is provided with positioning pin holes, and the positioning pin holes correspond to the positions of the positioning pins.

[0012] Preferably, locking hooks are provided on both sides of the end of the working arm. The first end of the locking hook is rotatably connected to the working arm, and the second end of the locking hook is a free end. The locking hook is provided with a limiting groove, which is used to accommodate the contact plate between the sealing plate of the working arm and the support arm.

[0013] Preferably, the bottom of the cantilever bracket is rotatably connected to a mounting bracket for mounting the working arm. The mounting bracket is rotatably connected to the cantilever bracket, and the rotation axis of the mounting bracket is perpendicular to the extension direction of the working arm.

[0014] Preferably, a turbine is provided on the mounting bracket, and a worm gear that meshes with the turbine is provided on the cantilever bracket.

[0015] The beneficial effects of this invention are: 1. The cantilever support of this gantry-type full-molten pool refining slag removal device can move along the guide rail of the gantry support. The working arm on the cantilever support can be attached to the refining hanger and the slag removal hanger. The working arm can rotate relative to the cantilever support to realize the swinging action of the working arm, which increases the working range of the refining hanger and the slag removal hanger inside the molten pool. At the same time, the working arm can be extended and retracted, and the refining head and slag rake at the end of the working arm can move over a large area inside the molten pool to achieve full coverage of the molten pool for refining and slag removal operations.

[0016] 2. The cantilever support of this gantry-type full-melting pool refining slag removal device is slidably connected to the guide rail of the gantry support. The cantilever support is equipped with multiple sets of guide wheels. The guide wheels can limit and guide the movement of the cantilever support on the side, top and bottom surfaces of the guide rail, so as to realize the stable sliding of the cantilever support on the guide rail. One side of the guide wheel on the side of the guide rail is fixed and the other side is movable. The movable guide wheel buffers the torque generated by the working arm during operation, plays an anti-torsion role, and reduces the wear between the cantilever support and the guide rail.

[0017] 3. The slag rake of the slag removal device in this gantry-type full molten pool refining slag removal device is movable and its angle can be adjusted, which makes it convenient to remove floating slag from the molten pool when removing slag from the molten pool.

[0018] 4. In this gantry-type full-molten pool refining slag removal device, the refining hanger and the slag removal hanger can be respectively attached to the working arm. The working arm contains a rotatable drive shaft, which outputs rotational driving force. This drive force rotates the refining head of the refining hanger, and the slag removal hanger converts this rotational force into a pushing or pulling force, thus adjusting the slag rake angle. This gantry-type full-molten pool refining slag removal device achieves the working actions of the refining head and slag rake through the drive shaft inside the working arm, eliminating the need for additional power at the end of the working arm. This results in a highly compact overall structure and improves the operational stability and reliability of the equipment under high-temperature and harsh operating conditions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the gantry frame of the gantry-type full-melting pool refining slag removal device; Figure 2 This is a schematic diagram of the cantilever support of the gantry-type full-melting pool refining slag removal device; Figure 3 This is a schematic diagram of the front structure of the gantry frame of the gantry-type full-melting-pool refining slag removal device; Figure 4 This is a structural schematic diagram of the side of the gantry frame (attached with refining components) of the gantry-type full-melting pool refining slag removal device; Figure 5 This is a structural schematic diagram of the side of the gantry frame (attached with slag removal components) of the gantry-type full-melting pool refining slag removal device; Figure 6 This is a schematic diagram of the slag removal bracket in the gantry-type full-melting-pool refining slag removal device; Figure 7 This is a schematic diagram of the internal structure of the slag removal bracket in this gantry-type full-melting-pool refining slag removal device; Figure 8 This is a schematic diagram of the external structure of the working arm connection point of this gantry-type full-melting-pool refining slag removal device; Figure 9 This is a schematic diagram of the internal structure of the working arm connection point of this gantry-type full-melting pool refining slag removal device.

[0020] In the diagram: 1. Guide rail; 2. Cantilever support; 3. Working arm; 4. Refining hanger; 5. Slag removal hanger; 6. Gantry support; 21. Longitudinal support assembly; 22. Lateral support assembly; 23. Mounting bracket; 24. Turbine; 25. Worm gear; 211. First guide wheel; 212. Second guide wheel; 221. Third guide wheel; 31. Drive shaft; 32. First docking shaft; 33. Sealing plate; 34. Bearing housing; 35. First bearing; 36. Locking hook; 37. Third connecting pin; 41. Refining head; 51. Slag rake; 52. First rocker arm; 53. Second rocker arm; 54. Support arm; 55. First connecting pin; 56. Connecting seat; 57. Second docking shaft; 58. Contact plate; 59. Positioning pin; 510. First drive shaft; 511. Second drive shaft; 512. Third bearing; 513. Nut; 514. Rotating screw; 515. Telescopic rod; 516. Second connecting pin; 521. Rotating pin; 561. Support roller; 571. Second bearing. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Reference Figure 1-4 A gantry-type full-melting-pool refining slag removal device includes a gantry support 6, which can be installed at the slag discharge port of the molten pool. A laterally extending guide rail 1 is provided on the gantry support 6, and a cantilever support 2 is mounted on the guide rail 1. The cantilever support 2 is slidably connected to the guide rail 1 and can move horizontally at the slag discharge port of the molten pool. A working arm 3 is connected to the bottom of the cantilever support 2. Figure 4 and Figure 5 The working arm 3 can be attached to either the refining attachment 4 or the slag removal attachment 5. The working arm 3 is telescopic, allowing it to deliver either the refining attachment 4 or the slag removal attachment 5 into the molten pool. The refining attachment 4 has a refining head 41 at its end, which enters the molten pool to spray powder onto the molten metal, achieving a refining effect. The slag removal attachment 5 has a slag rake 51 at its end, used to remove floating slag from the molten pool.

[0023] The cantilever bracket 2 is provided with a longitudinal support assembly 21 and a transverse support assembly 22 on its upper part. The longitudinal support assembly 21 includes a first guide wheel 211 and a second guide wheel 212. The first guide wheel 211 and the second guide wheel 212 are rotatably connected to the first bracket on the cantilever bracket 2, respectively. The rotation axis of the first guide wheel 211 is parallel to the rotation axis of the second guide wheel 212. The first guide wheel 211 and the second guide wheel 212 are located on different sides of the guide rail 1.

[0024] Specifically, the first guide wheel 211 is rotatably connected to the cantilever bracket 2 via a first rotating shaft. The first guide wheel 211 is fixedly installed, and its side surface contacts the side surface of the guide rail 1, providing a precise guiding reference for the cantilever bracket 2 and determining its linear motion trajectory. The second guide wheel 212 is rotatably connected to the cantilever bracket 2 via a second rotating shaft. An eccentric bushing is provided on the cantilever bracket 2, which cooperates with the second rotating shaft to allow the second guide wheel 212 to be movable. The second guide wheel 212 can be used to contact the guide rail 1. Rotating the second rotating shaft can change the distance between the second guide wheel 212 and the side surface of the guide rail 1, thereby changing the preload between the cantilever bracket 2 and the guide rail 1 and adjusting the longitudinal torque between them. In this embodiment, adjusting the preload of the second guide wheel 212 on the guide rail 1 ensures that when the cantilever bracket 2 is subjected to a torsional torque, both the first guide wheel 211 and the second guide wheel 212 press against the side surface of the rail 1, limiting the torsional movement of the cantilever bracket 2 and providing an anti-torsional effect.

[0025] Multiple first guide wheels 211 form a first guide wheel group, and multiple second guide wheels 212 form a second guide wheel group. The first and second guide wheel groups are located on different sides of the guide rail 1. In this embodiment, there are four first guide wheel groups and four second guide wheel groups. The four wheel groups form a stable four-point contact with the guide rail. When the cantilever bracket 2 is subjected to lateral torsional force, the force is distributed to multiple guide wheels, greatly increasing the ability to resist lateral torque.

[0026] Furthermore, the lateral support assembly 22 includes a third guide wheel 221, which is rotatably connected to the cantilever bracket 2 via a third rotating shaft. The rotation axis of the third guide wheel 221 is perpendicular to the rotation axis of the first guide wheel 211. The third guide wheel 221 is located above the top surface or below the bottom surface of the guide rail 1, and is used to contact the top or bottom surface of the guide rail 1 to achieve lateral guidance and anti-torsion of the guide rail 1.

[0027] Multiple third guide wheels 221 form a third guide wheel group. The third guide wheels 221 in the third guide wheel group are located at the same horizontal position. There are two third guide wheel groups. One group of third guide wheel groups is located above the top surface of the guide rail 1, and the other group of third guide wheel groups is located below the bottom surface of the guide rail 1. The two third guide wheel groups realize the lateral torsional resistance of the cantilever bracket 2.

[0028] The combination of the first, second, and third guide wheel groups forms an n-shaped torsional limit on the top of the guide rail 1. At the same time, the combination of the first, second, and third guide wheel groups forms a U-shaped torsional limit on the bottom surface of the guide rail 1. The guide wheel groups bear force at multiple points to maintain the stable sliding of the cantilever bracket 2 on the guide rail 1.

[0029] Furthermore, a mounting bracket 23 is connected to the bottom of the cantilever bracket 2, and the working arm 3 is mounted on the mounting bracket 23. The mounting bracket 23 is rotatably connected to the cantilever bracket 2 via a slewing bearing, and the rotation axis of the mounting bracket 23 is perpendicular to the extension direction of the working arm 3. (Reference) Figure 3 and Figure 4 A turbine 24 is mounted on the mounting bracket 23, and a worm gear 25 is mounted on the cantilever bracket 2, with the worm gear 25 meshing with the turbine 24. A first motor is mounted on the cantilever bracket 2, which drives the worm gear 25 to rotate, enabling the turbine 24, the mounting bracket 23, and the working arm 3 to rotate in the horizontal plane. This allows the working arm 3 to rotate relative to the cantilever bracket 2 and to swing, increasing the working range of the refining hanger 4 and the slag removal hanger 5 within the molten pool.

[0030] In this embodiment, the cantilever support 2 can move along the guide rail 1 of the gantry support 6. The working arm 3 on the cantilever support 2 can be attached to the refining hanger 4 and the slag removal hanger 5. The working arm 3 can rotate relative to the cantilever support 2 to realize the swinging action of the working arm 3, increasing the working range of the refining hanger 4 and the slag removal hanger 5 inside the molten pool. At the same time, the working arm 3 can extend and retract, and the refining head 41 and slag rake 51 at the end of the working arm 3 can move over a large area inside the molten pool to achieve full coverage of the molten pool for refining and slag removal operations.

[0031] Furthermore, in this embodiment, a drive shaft 31 is internally provided in the working arm 3, and the drive shaft 31 is rotatably connected to the working arm 3. A second motor is provided on the working arm 3, which drives the drive shaft 31 to rotate. A first docking shaft 32 is provided at the end of the drive shaft 31, and a sealing plate 33 is fixedly provided at the end of the working arm 3. A bearing seat 34 is fixedly connected to the sealing plate 33, and the first docking shaft 32 is rotatably connected to the bearing seat 34 through a first bearing 35. The first docking shaft 32 is connected to the drive shaft 31, and the first docking shaft 32 can rotate synchronously with the drive shaft 31.

[0032] Both the refining hanger 4 and the slag removal hanger 5 are equipped with hanging rods, which are used to attach the working arm 3. (Reference) Figure 9 The connecting rod includes a support arm 54. The mating end of the support arm 54 is provided with a contact plate 58 and a second mating shaft 57. The contact plate 58 is fixedly connected to the support arm 54, and the second mating shaft 57 is rotatably connected to the support arm 54 via a second bearing 571. The second mating shaft 57 extends from the support arm 54 through the contact plate 58. A first mating shaft 32 is provided with an insertion hole for inserting the second mating shaft 57, thus achieving the connection between the first and second mating shafts 32. The insertion hole of the first mating shaft 32 is a non-circular hole to prevent the second mating shaft 57 from rotating relative to the first mating shaft 32. In this embodiment, the insertion hole is polygonal, such as hexagonal, allowing the first and second mating shafts 32 to rotate synchronously after connection.

[0033] In this embodiment, the contact plate 58 of the support arm 54 is provided with two positioning pins 59, and the sealing plate 33 of the working arm 3 is provided with positioning pin holes. The positioning pin holes correspond to the positions of the positioning pins 59. The positioning pins 59 can be inserted into the positioning pin holes of the sealing plate 33 to realize the positioning between the first docking shaft 32 and the second docking shaft 57, which facilitates the installation of the refining hanger 4 or the slag removal hanger 5 on the working arm 3.

[0034] refer to Figure 8Locking hooks 36 are provided on both sides of the end of the working arm 3. The first end of the locking hook 36 is rotatably connected to the working arm 3 via a third connecting pin 37, and the second end of the locking hook 36 is a free end. The locking hook 36 is provided with a limiting groove, which is used to accommodate the sealing plate 33 of the working arm 3 and the contact plate 58 of the support arm 54. When the first docking shaft 32 of the working arm 3 is engaged with the second docking shaft 57 of the support arm 54, the sealing plate 33 of the working arm 3 is in contact with the contact plate 58 of the support arm 54. At this time, the second end of the locking hook 36 is fastened to the contact plate 58, realizing the locking between the working arm 3 and the refining hanger 4 or the slag removal hanger 5.

[0035] refer to Figure 6 and Figure 7 The support arm 54 of the slag removal device 5 is internally equipped with a first drive shaft 510 and a second drive shaft 511. The second drive shaft 511 is rotatably connected to the support arm 54 via a third bearing 512. The first end of the first drive shaft 510 is connected to the second docking shaft 57, and the second end of the first drive shaft 510 is connected to the second drive shaft 511. The first drive shaft 510 and the second drive shaft 511 can rotate synchronously with the second docking shaft 57.

[0036] A rotating lead screw 514 is fixedly connected to the end of the second drive shaft 511. A nut 513 and a telescopic rod 515 are sleeved on the outside of the rotating lead screw 514. The nut 513 is fixedly connected to the telescopic rod 515, and the nut 513 is screwed to the rotating lead screw 514. When the rotating lead screw 514 rotates, the nut 513 and the telescopic rod 515 move linearly.

[0037] Furthermore, the end of the telescopic rod 515 extends from the support arm 54, and a connecting seat 56 is fixedly provided at the end of the support arm 54. A support roller 561 is provided on the connecting seat 56, and the support roller 561 supports the telescopic rod 515, which helps the telescopic rod 515 to move stably.

[0038] A slag rake 51 is mounted on the connecting seat 56. A first rocker arm 52 is fixedly connected to the top of the slag rake 51. The middle part of the first rocker arm 52 is rotatably connected to the connecting seat 56 via a first connecting pin 55. A second rocker arm 53 is connected to the end of the first rocker arm 52. The first rocker arm 52 is rotatably connected to the first end of the second rocker arm 53 via a rotating pin 521. The second end of the second rocker arm 53 is rotatably connected to the end of the telescopic rod 515 via a second connecting pin 516. The telescopic rod 515 can be pushed and pulled to adjust the angle of the slag rake 51, making it convenient for the slag rake 51 to carry floating slag away from the molten pool when slag is being removed from the molten pool.

[0039] In this embodiment, the slag rake 51 is provided with a leakage hole 517, which is used for the molten metal inside the molten pool to pass through, reducing the resistance of slag removal.

[0040] In this embodiment, a refining head 41 is provided at the end of the refining hanger 4. The refining head 41 is equipped with a nozzle that can spray powder into the molten pool. The refining head 41 is rotatably connected to the refining hanger 4, and the rotation axis of the refining head 41 is perpendicular to the extension direction of the working arm 3. A bevel gear set (not shown) is provided at the end of the support arm 54 in the hanger of the refining hanger 4. The active bevel gear in the bevel gear set is connected to the second docking shaft 57. The active bevel gear can rotate synchronously with the second docking shaft 57. The passive bevel gear is fixedly sleeved on the rotating shaft column of the refining head 41. The active bevel gear meshes with the passive bevel gear, and the active bevel gear can rotate with the passive bevel gear to realize the rotation action of the refining head 41.

[0041] In this embodiment, the slag removal device for molten pool refining is a gantry-type configuration, and the cantilever support 2 can move along the guide rail 1 of the gantry support 6. A working arm 3 is installed at the lower part of the cantilever support 2. The refining hanger 4 and the slag removal hanger 5 can be respectively attached to the working arm 3. A rotatable drive shaft 31 is installed inside the working arm 3. The drive shaft 31 outputs a rotational driving force, which drives the refining head 41 of the refining hanger 4 to rotate, thus achieving the rotation of the refining head 41. The slag removal hanger 5 converts the rotational force into a pushing and pulling force of the telescopic rod 515 through a screw assembly. The telescopic rod 515 can rotate the second rocker arm 53 of the slag rake 51, thereby achieving angle adjustment of the slag rake 51. This gantry-type full-molten pool refining slag removal device realizes the working action of the refining head 41 and slag rake 51 through the active drive shaft 31 inside the working arm 3. There is no need to set an additional power at the end of the working arm, which realizes the high compactness of the whole machine structure and improves the operational stability and reliability of the equipment under high temperature and harsh working conditions. At the same time, the working arm 3 is easy to connect with the refining hanger 4 and the slag removal hanger 5, and is easy to replace.

[0042] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A gantry-type full-melting-pool refining slag removal device, comprising a gantry support, wherein a cantilever support is slidably connected to the guide rail of the gantry support, and the working arm is used to hang refining components or slag removal components, characterized in that, The cantilever bracket is equipped with longitudinal support components and transverse support components; The longitudinal support assembly includes a movable first guide wheel and a fixed second guide wheel. The rotation axis of the first guide wheel is parallel to the rotation axis of the second guide wheel. The first guide wheel and the second guide wheel are located on different sides of the guide rail. The first guide wheel adjusts the longitudinal torque between the cantilever bracket and the guide rail by changing the distance between the guide rails. The lateral support assembly includes a third guide wheel, which is located above the top surface or below the bottom surface of the guide rail, and the rotation axis of the third guide wheel is perpendicular to the rotation axis of the first guide wheel.

2. The gantry-type full-melting-pool refining slag removal device according to claim 1, characterized in that, Multiple first guide wheels form a first guide wheel group, multiple second guide wheels form a second guide wheel group, and multiple third guide wheels form a third guide wheel group. The first guide wheel group, the second guide wheel group, and the third guide wheel group are combined to form an n-shaped torsional limit on the top of the guide rail.

3. The gantry-type full-melting pool refining slag removal device according to claim 2, characterized in that, The third guide wheel group has the third guide wheel located at the same horizontal position. The number of the third guide wheel group is at least two groups, with at least one group of the third guide wheel group located above the top surface of the guide rail and at least one group of the third guide wheel group located below the bottom surface of the guide rail.

4. The gantry-type full-melting-pool refining slag removal device according to any one of claims 1-3, characterized in that, The working arm is equipped with an active drive shaft, which is rotatably connected to the working arm. The end of the active drive shaft is connected to a first docking shaft, which is rotatably connected to the end of the working arm. Both the refining hanger and the slag removal hanger are equipped with a hanging rod for attaching the working arm. The hanging rod includes a support arm, and the docking end of the support arm is provided with a second docking shaft. The second docking shaft is rotatably connected to the support arm, and the first docking shaft is provided with a non-circular insertion hole for inserting the second docking shaft.

5. The gantry-type full-melting-pool refining slag removal device according to claim 4, characterized in that, The support arm of the slag removal device is equipped with a nut, a rotating screw, and a telescopic rod. The rotating screw is connected to the second docking shaft. The nut is screwed to the rotating screw. The telescopic rod is fixedly connected to the nut and sleeved on the outside of the rotating screw. The end of the telescopic rod extends out from the support arm. A connecting seat is fixedly provided at the end of the support arm, and a first rocker arm of a slag rake is rotatably connected to the connecting seat. The first rocker arm is rotatably connected to the first end of a second rocker arm through a rotating pin, and the second end of the second rocker arm is rotatably connected to the end of a telescopic rod through a second connecting pin.

6. The gantry-type full-melting-pool refining slag removal device according to claim 5, characterized in that, The slag rake is equipped with a leakage hole.

7. The gantry-type full-melting-pool refining slag removal device according to claim 4, characterized in that, The support arm has a contact plate at its docking end, and at least two positioning pins on the contact plate. The working arm has a sealing plate at its end, and positioning pin holes on the sealing plate are provided, with the positioning pin holes corresponding to the positions of the positioning pins.

8. The gantry-type full-melting-pool refining slag removal device according to claim 7, characterized in that, Locking hooks are provided on both sides of the end of the working arm. The first end of the locking hook is rotatably connected to the working arm, and the second end of the locking hook is a free end. The locking hook is provided with a limiting groove, which is used to accommodate the contact plate between the sealing plate of the working arm and the support arm.

9. The gantry-type full-melting-pool refining slag removal device according to claim 1, characterized in that, The bottom of the cantilever bracket is rotatably connected to a mounting bracket for mounting the working arm. The mounting bracket is rotatably connected to the cantilever bracket, and the rotation axis of the mounting bracket is perpendicular to the extension direction of the working arm.

10. The gantry-type full-melting-pool refining slag removal device according to claim 9, characterized in that, The mounting bracket is equipped with a turbine, and the cantilever bracket is equipped with a worm gear that meshes with the turbine.

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