RH furnace slag breaker

Abstract

The utility model discloses a kind of RH furnace slag breaker, including slag breaking support, four-bar linkage, slag breaking lance and linear power device;The four-bar linkage includes first connecting rod and second connecting rod, the first connecting rod and second connecting rod are arranged in parallel, and the first connecting rod is arranged above the second connecting rod with interval, one end of the first connecting rod, second connecting rod is respectively with the two places of the slag breaking support through horizontal shaft hinged, the other end of the first connecting rod, second connecting rod is respectively with the two places of the rear upper section of the slag breaking lance through horizontal shaft hinged, the slag breaking lance is in the inclined posture of upper end rear, lower end front;The linear power device is arranged at the top in the slag breaking support, one end is with the slag breaking support through horizontal shaft hinged, the other end is with the first connecting rod through horizontal shaft hinged.Drive four-bar linkage with linear power device, utilize the parallel motion characteristics of four connecting rods, ensure that slag breaking lance impacts slag layer with certain angle, avoid lateral deviation, make slag breaker run stably and reliably.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical technology, specifically to an RH furnace slag breaker. Background Technology

[0002] In the RH furnace refining process, there is no heating process, and the temperature of the molten steel gradually decreases. The surface slag layer is prone to slag formation and crusting. Before temperature sampling, the slag surface must first be broken to create a hole to accommodate the temperature sampling gun. Currently, most steel mills still rely on manual handheld slag breaking for this operation.

[0003] Existing automated slag breaking technologies fall into two categories. The first typically involves a robot gripping a slag-breaking gun to break up the slag layer from the molten steel. In this approach, the slag-breaking gun is mounted as a standalone tool on the end of the six-axis of an industrial robot, or it's mounted on a quick-change tool on the robot, allowing switching to the slag-breaking gun via the tool. When slag breaking is needed, the robot carries the slag-breaking gun and inserts it into the molten steel slag surface, breaking the slag layer. The second approach generally uses a motor-driven sprocket chain and slider to move the slag-breaking gun to break up the slag layer. In this solution, the slag-breaking equipment is installed on the furnace platform. The slag-breaking gun is tilted at a fixed angle, or an electric actuator is used to tilt it to the desired angle. The motor drives the sprocket chain to move the slag-breaking gun along a guide rail. One side of the slider is connected to the guide rail, and the other side is fixed to the chain. The slag-breaking gun is mounted on the slider. When slag breaking is needed, the motor drives the sprocket chain to lower the slag-breaking gun along the track to the molten steel slag surface. After breaking the slag layer, manual or robotic temperature measurement and sampling are performed.

[0004] The existing manual slag breaking method has the following drawbacks: Firstly, manual slag breaking is labor-intensive and requires a high frequency of operation. The molten steel surface is approximately 500mm from the platform, making it prone to splashing during manual breaking, posing a high safety risk. Secondly, the RH furnace refining process lacks a heating process, causing the molten steel temperature to gradually decrease and resulting in severe slag buildup on the slag surface. Manually breaking the slag surface with a handheld slag-breaking gun is impossible for temperature sampling, thus affecting the smooth progress of subsequent steelmaking processes and the adjustment of process parameters.

[0005] The existing technology of using robots to grasp slag-breaking guns for slag breaking has the following drawbacks: First, it requires robots with large load capacities and long reach, resulting in a large footprint for the slag-breaking system. Second, since the slag-breaking gun is installed at the end of the robot's six axes, there is a risk of overloading the robot when slag buildup on the molten steel surface is severe. This could cause the slag-breaking gun to stop inside the ladle and be unable to recover in a short time, thus affecting subsequent steelmaking processes.

[0006] The technical approach of using a motor-driven sprocket chain and slider to drive the slag-breaking gun has the following drawbacks: 1. When the sprocket chain-driven slag-breaking gun is in operation, the instantaneous contact between the slag-breaking gun and the slag surface can generate a large impact force, posing a risk of chain breakage. Simultaneously, the overall equipment vibrates significantly, putting considerable impact on the slider guide mechanism and potentially damaging it. 2. In high-temperature environments, the lubricating grease in chain drives is prone to evaporation, leading to accelerated chain wear, reduced transmission efficiency, and shorter service life. Furthermore, thermal expansion at high temperatures can increase chain tension, potentially causing chain breakage or sprocket damage. 3. The slag-breaking gun is fixed to the chain. When the chain breaks, the slag-breaking gun will fall instantly, potentially causing equipment downtime and damage, and also posing a safety hazard to personnel. Additionally, the slag-breaking gun remains inside the ladle, making it impossible to remove quickly, affecting subsequent steel refining processes and causing economic losses to the steel plant. 4. To achieve the lifting requirements, the sprocket chain drive requires a large space in front of the furnace, affecting manual or robotic temperature sampling and making it difficult to adapt to the narrow working environment in front of an RH furnace. It occupies a large vertical space, requiring modifications to the RH furnace platform and upper platform, while also needing to reserve a large maintenance space, resulting in high investment costs and difficulties in equipment installation and maintenance. Utility Model Content

[0007] Therefore, this utility model provides an RH furnace slag breaker to solve one or more of the above-mentioned problems.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A slag breaker for an RH furnace includes a slag breaking support, a four-bar linkage, a slag breaking gun, and a linear power device. The four-bar linkage includes a first link and a second link, which are arranged in parallel. The first link is spaced above the second link. One end of each of the first and second links is hinged to two points on the slag breaking support via a horizontal axis. The other ends of each link are hinged to two points on the upper rear section of the slag breaking gun via a horizontal axis. The slag breaking gun is tilted with its upper end towards the rear and its lower end towards the front. The linear power device is located at the top inside the slag breaking support, with one end hinged to the support via a horizontal axis and the other end hinged to the first link via a horizontal axis.

[0010] Furthermore, the linear power unit is a large-diameter air cylinder or a hydraulic cylinder, and both the large-diameter air cylinder and the hydraulic cylinder are equipped with a central sealing valve and a throttle valve.

[0011] Furthermore, the lower end of the slag-breaking gun is connected to a slag-breaking head via a quick-release mechanism.

[0012] Furthermore, the RH furnace slag breaker also includes a manual hoist or an electric hoist, which is installed on the top of the slag breaking support. The wire rope of the manual hoist or electric hoist is provided with a hook at the end that can be hooked onto the reserved suspension point of the four-bar linkage.

[0013] Furthermore, the slag breaking support is provided with two buffer devices, which are located between the two extreme positions of the four-bar linkage and the slag breaking support.

[0014] Furthermore, the RH furnace slag breaker also includes a mobile platform, and the slag breaking support is mounted on the mobile platform.

[0015] Furthermore, the mobile platform includes a track, a servo-driven mobile track trolley, a servo motor, a gear, and a rack. The servo-driven mobile track trolley can move along the track. The servo motor is mounted on the servo-driven mobile track trolley. The gear is mounted on the output shaft of the servo motor or a reducer connected to the servo motor. The rack is arranged along the track, and the gear meshes with the rack.

[0016] Furthermore, the RH furnace slag breaker also includes a slag knocking device, which is installed on the side of the track and spaced apart from the track. The top of the slag knocking device is provided with an inclined slag knocking surface. When the servo moving track trolley is in the slag knocking position, the slag breaking gun presses down to hit the slag knocking device to achieve automatic slag knocking.

[0017] Furthermore, the RH furnace slag breaker also includes a limiting locking mechanism, which includes a limiting cylinder, a limiting pin, and a limiting groove. The limiting cylinder is mounted on the servo moving track trolley, the limiting pin is mounted on the piston rod of the limiting cylinder, and the limiting groove is located on the track or at a position relatively stationary with respect to the track. There are two limiting grooves, corresponding to the servo moving track trolley being in the slag breaking position and the slag knocking position, respectively. When the servo moving track trolley is in the slag breaking position or the slag knocking position, the limiting cylinder can drive the limiting pin to extend into the limiting groove.

[0018] This utility model has the following advantages:

[0019] 1. A linear power unit drives a four-bar linkage mechanism. By utilizing the parallel motion characteristics of the four-bar linkage mechanism, the slag-breaking gun impacts the slag layer at a certain angle (i.e., tilted posture), avoiding lateral deviation and ensuring stable and reliable operation of the slag-breaking device. The layout of the four-bar linkage mechanism and the linear power unit significantly reduces the lateral dimension, adapting to the narrow space in front of the RH furnace.

[0020] 2. The slag breaking head and the end of the slag breaking gun are connected by a quick-disassembly structure, which facilitates disassembly and installation. The quick-disassembly structure greatly shortens the replacement time of the slag breaking head, improves the efficiency of on-site inspection and maintenance, and reduces the intensity of manual labor.

[0021] 3. The servo-driven moving track trolley is precisely positioned through a limit locking mechanism, achieving high positioning accuracy; it realizes the automatic forward and backward movement of the slag crusher, reducing the lateral space occupied in front of the furnace; after slag crushing, it automatically returns to its original position, avoiding long-term heat radiation damage to the equipment from the high-temperature furnace mouth, ensuring safety and reliability; overall, it achieves rapid and unmanned slag crushing operation.

[0022] 4. After completing the slag breaking, the slag crusher retracts to the slag knocking station and automatically completes the slag knocking function of the slag crushing head, reducing the phenomenon of slag sticking to the slag crushing head and reducing the workload of slag crushing head inspection and maintenance.

[0023] 5. In extreme cases where the system energy is cut off and the gas line is leaked, a hand-operated hoist is used to lift the slag-breaking gun to the top of the platform without affecting the subsequent steelmaking process. This solves the problems of chain breakage causing the slag-breaking gun to remain inside the ladle and be unable to be lifted when the sprocket and chain drive slag-breaking gun breaks, as well as the problems of chain breakage causing the slag-breaking gun to fall off in chain transmission, resulting in equipment damage and personnel safety accidents.

[0024] 6. Buffer devices are installed at the two positions of the slag-breaking gun in the folded and extended positions to prevent the large-diameter cylinder from being damaged by inertial force.

[0025] 7. Configure a central sealing valve and a throttle valve to ensure smooth operation of the slag-breaking gun while preventing the slag-breaking gun from suddenly falling when the system loses power or gas.

[0026] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0027] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0029] Figure 1 This is a schematic diagram of the structure of an RH furnace slag breaker (the four-bar linkage in the diagram is in a fully folded state);

[0030] Figure 2 This is a schematic diagram of the structure of an RH furnace slag breaker from another perspective (the four-bar linkage is in a fully deployed state in this diagram);

[0031] Figure 3 This is a schematic diagram of an RH furnace slag remover performing automatic slag knocking.

[0032] In the diagram: 1. Slag breaking support; 2. Four-bar linkage; 3. Slag breaking head; 4. Large-diameter cylinder; 5. Servo moving track trolley; 6. Limit locking mechanism; 7. Slag knocking device; 8. Hand chain hoist; 9. Buffer device; 10. First connecting rod; 11. Second connecting rod; 12. Slag breaking gun; 13. Limiting groove; 14. Quick-change pin. Detailed Implementation

[0033] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1 to 3As shown, this embodiment provides an RH furnace slag breaker, including a slag breaking support 1, a four-bar linkage 2, a slag breaking gun 12, and a linear power device. The four-bar linkage 2 includes a first link 10 and a second link 11, which are arranged in parallel. The first link 10 is spaced above the second link 11. The first ends (also called fixed ends) of the first link 10 and the second link 11 are respectively hinged to two points on the slag breaking support 1 via horizontal axes. The second ends (also called moving ends) of the first link 10 and the second link 11 are respectively hinged to two points on the upper rear section of the slag breaking gun 12 via horizontal axes. The slag breaking gun 12 is in an inclined posture with the upper end towards the rear and the lower end towards the front. It can be seen that the part of the slag breaking support 1 located between the fixed ends of the first link 10 and the second link 11 serves as one of the connecting rods of the four-bar linkage 2. The linear power unit is located at the top inside the slag-breaking support 1, with one end hinged to the slag-breaking support 1 via a horizontal axis and the other end hinged to the first connecting rod 10 via a horizontal axis. By employing a four-bar linkage 2 that can be unfolded and folded, the problems of large space occupation in front of the furnace and easy damage due to large impact of traditional slag-breaking devices driven by sprockets and chains are solved. It should be noted that when the four-bar linkage 2 is in the fully folded state (in this state, the four-bar linkage 2 is at an extreme position), the linear power unit is completely inside the slag-breaking support 1, and the linear power unit is nearly horizontal at this time. When the four-bar linkage 2 is in the fully unfolded state (in this state, the four-bar linkage 2 is at another extreme position), the actuating end of the linear power unit will extend outside the slag-breaking support 1. Exemplarily, the slag-breaking support 1 is made of welded structural profiles, and the structure is reinforced at the hinge position corresponding to the linear power unit. For example, the first connecting rod 10 and the second connecting rod 11 can be made of rectangular square tubes, channel steel, circular steel pipes, etc., and wear-resistant bushings are provided on the horizontal shaft at the hinge to ensure sufficient structural strength, rigidity and wear resistance. Optionally, the linear power device can be a hydraulic (oil) cylinder, electric push rod, electro-hydraulic push rod, etc. The transmission part adopts a four-bar linkage 2, which utilizes the parallel motion characteristics of the four-bar linkage to ensure that the slag-breaking gun 12 and the slag-breaking head 3 impact the slag layer at a certain angle; the slag-breaking gun 12 is one of the connecting rods of the four-bar linkage 2, and the connection between the connecting rods adopts a hinge shaft to realize the folding and extension of the slag-breaking gun 12, thereby realizing the slag-breaking function.

[0035] In this embodiment, the linear power device is a large-diameter cylinder 4. The cylinder body of the large-diameter cylinder 4 is located inside the slag-breaking support 1, and the piston rod can extend outside the slag-breaking support 1. By pushing out and retracting the large-diameter cylinder 4, the four-bar linkage 2 and the slag-breaking head 3 are driven to realize the slag-breaking and slag-knocking functions (see below). The piston rod of the large-diameter cylinder 4 is fitted with a high-temperature resistant dustproof bellows cover to prevent splashed steel slag from damaging the piston rod when the cylinder is extended, thereby improving the service life of the large-diameter cylinder 4. The large-diameter cylinder 4 is equipped with a central sealing valve and a throttle valve. The throttle valve is installed on the air intake and exhaust pipes between the central sealing valve and the cylinder. By setting the central sealing valve, the slag-breaking gun 12 will not fall instantly when the equipment is powered off or the air supply is cut off, thus solving the safety risk caused by the sudden cut-off of energy. By setting the throttle valve, the cylinder runs more smoothly, improving the stability of the slag-breaking action. By employing a large-diameter cylinder 4, sufficient crushing force is ensured while shortening the crushing time, solving the problems of long crushing time in sprocket and chain drive systems and chain damage caused by high-temperature oxidation and grease volatilization. Optionally, the linear power unit is a large-diameter hydraulic cylinder, which is also equipped with a central sealing valve, a throttle valve, and a high-temperature resistant dustproof bellows cover.

[0036] The lower end of the slag-breaking gun 12 is connected to the slag-breaking head 3 via a quick-release structure. In this embodiment, the slag-breaking head 3 includes a hollow round tube and a solid cone welded to the lower end of the hollow round tube. During slag breaking, the solid cone contacts the slag surface, and the inclined surface of the solid cone pushes the steel slag to the surroundings, thereby gradually breaking the slag surface. The lower end of the slag-breaking gun 12 is provided with a protrusion, and the upper end of the hollow round tube can be fitted over the protrusion. Both the upper end of the hollow round tube and the protrusion are provided with shaft holes, and quick-change pins 14 are inserted into the shaft holes, so that the hollow round tube and the slag-breaking gun 12 are pinned together by the quick-change pins 14. In the case of severe slag adhesion to the slag-breaking head 3 or damage to the slag-breaking head 3, the quick-change pins 14 can be knocked off along the shaft holes, which facilitates quick replacement and repair when the slag-breaking head 3 has a lot of steel adhesion or is damaged.

[0037] The RH furnace slag breaker also includes a manual or electric hoist, which is installed on top of the slag breaking support 1. The wire rope of the manual or electric hoist has a hook at the end that can be hooked onto a pre-reserved suspension point on the four-bar linkage 2. In extreme cases where the system experiences power or gas outages, or the pipeline of the large-diameter cylinder 4 leaks or breaks, the hook of the manual hoist 8 can be manually suspended from the pre-reserved suspension point on the four-bar linkage 2 (which can be the horizontal shaft hinged to the first connecting rod 10 and the slag breaking gun 12, or a hanging ring welded to the side of the first connecting rod 10), thereby lifting the slag breaking gun 12 above the platform without affecting subsequent steelmaking processes. When using the manual or electric hoist to lift the slag breaking gun 12, after the hook is engaged with the hanging ring and horizontal shaft, the central sealing valve can be manually operated first to release the pressure inside the large-diameter cylinder 4, and then the wire rope of the manual or electric hoist can be wound back.

[0038] Two buffer devices 9 are provided on the slag breaking support 1. The two buffer devices 9 are located between the two extreme positions of the four-bar linkage 2 and the slag breaking support 1. Exemplarily, the buffer devices 9 are polyurethane pads installed at the corresponding positions. The buffer devices 9 are respectively provided at the two extreme positions of the slag breaking support 1 corresponding to the four-bar linkage 2 to provide buffering for the slag breaking action, reduce the impact on the slag breaking support 1, the large-diameter cylinder 4, and the four-bar linkage 2, and improve the stability of the slag breaking action.

[0039] The RH furnace slag breaker also includes a moving platform, on which the slag breaking support 1 is mounted. The slag breaking support 1 and the four-bar linkage 2 move back and forth with the moving platform, switching between the slag breaking station and the original position (such as the slag knocking station mentioned below).

[0040] The mobile platform includes a track, a servo-driven mobile track trolley 5, a servo motor, gears, and a rack. The servo-driven mobile track trolley 5 can move along the track. The servo motor is mounted on the servo-driven mobile track trolley 5, and the gears are mounted on the output shaft of the servo motor or a reducer connected to the servo motor. The rack is set along the track, and the gears mesh with the rack. The servo-driven mobile track trolley 5 has a built-in servo motor and encoder. The forward and backward movement of the slag crusher is achieved through gear and rack transmission, thereby achieving precise positioning of the slag crusher. Preferably, after receiving a slag crushing command, the servo-driven mobile track trolley 5 automatically moves to the slag crushing position in front of the furnace and automatically performs the slag crushing operation, reducing human intervention, lowering the labor intensity of personnel and the risk of molten steel splashing, and improving the automation level of the slag crushing equipment.

[0041] The RH furnace slag breaker also includes a slag-knocking device 7, which is installed on the side of the track and spaced apart from it. The top of the slag-knocking device 7 has an inclined slag-knocking surface. When the servo-moving track trolley 5 is in the slag-knocking position, the slag-breaking gun 12 presses down to strike the slag-knocking device. The slag-knocking device 7 is set on the outer platform of the servo-moving track trolley 5. After completing the slag-breaking operation, the servo-moving track trolley 5 retracts to the slag-knocking position, and the slag-breaking gun 12 extends to allow the quick-change slag-breaking head 3 to strike the surface of the slag-knocking device 7. The vibration and impact generated during the striking process cause the slag adhering to the slag-breaking head 3 to fall off, realizing the automatic slag-knocking function and reducing the workload of inspection and maintenance of the slag-breaking head 3.

[0042] In this embodiment, the RH furnace slag crusher also includes a limiting locking mechanism 6. The limiting locking mechanism 6 includes a limiting cylinder, a limiting pin, and a limiting groove 13. The limiting cylinder is mounted on the servo moving track trolley 5, and the limiting pin is mounted on the piston rod of the limiting cylinder. The limiting groove 13 is located on the track or in a position relatively stationary with respect to the track. There are two limiting grooves 13, corresponding to the servo moving track trolley 5 being in the slag crushing position and the slag knocking position, respectively. When the servo moving track trolley 5 is in the slag crushing position or the slag knocking position, the limiting cylinder can drive the limiting pin to extend into the limiting groove 13. The slag crusher is equipped with a limiting locking mechanism 6. When the slag crusher reaches the slag crushing position or the slag knocking position, the limiting cylinder pushes the limiting pin into the limiting groove 13 for positioning, preventing the slag crushing reaction force from causing the slag crusher to move and avoiding damage to the gear, rack, and other transmission mechanisms by the slag crushing reaction force.

[0043] The control method or workflow of the RH furnace slag breaker provided in this embodiment is as follows:

[0044] First, after the molten steel ladle is lifted into position, the relative height to the molten steel level is determined by the data from the encoder of the ladle lifting structure. Upon receiving the slag-breaking command, the limit cylinder of the limit locking mechanism 6 on the servo-moving track trolley 5 retracts, releasing the servo-moving track trolley 5 from its locked state. The servo-moving track trolley 5 moves along the track to the slag-breaking station, where the limit cylinder of the limit locking mechanism 6 extends, and the limit pin inserts into the limit groove 13, locking the servo-moving track trolley 5. Then, the large-diameter cylinder 4 drives the four-bar linkage 2 and the slag-breaking head 3 to extend and perform the slag-breaking operation. After slag breaking is completed, the large-diameter cylinder 4 drives the four-bar linkage 2 and the slag-breaking head 3 to fold back. The limit cylinder of the limit locking mechanism 6 retracts, releasing the servo-moving track trolley 5 from its locked state. The servo-driven moving track trolley 5 retreats along the track to the automatic slag-breaking station. The limit cylinder of the limit locking mechanism 6 extends, and the limit pin inserts into the limit groove 13, locking the servo-driven moving track trolley 5. The large-diameter cylinder 4 drives the four-bar linkage 2 and the slag-breaking head 3 to extend and strike the slag-breaking device 7 to perform slag-breaking operations. After completing the automatic slag-breaking, the large-diameter cylinder 4 drives the four-bar linkage 2 and the slag-breaking head 3 to fold back and return to their original positions, ending the slag-breaking process.

[0045] The RH furnace slag breaker features a compact design, integrating the slag-breaking gun 12, four-bar linkage 2, and large-diameter cylinder 4 onto a servo-driven moving track trolley 5 platform. With an overall width within 1 meter, it minimizes the lateral space occupied in front of the furnace, reserving operating space for manual operation. This reduces labor intensity and mitigates the safety risks of molten steel splashing, while also enabling intelligent temperature measurement and sampling robot systems for automated or even unmanned temperature measurement and sampling at the molten steel station, providing stable data support for subsequent steelmaking processes.

[0046] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A slag breaker for an RH furnace, characterized in that, The device includes a slag-breaking support (1), a four-bar linkage (2), a slag-breaking gun (12), and a linear power device. The four-bar linkage (2) includes a first link (10) and a second link (11). The first link (10) and the second link (11) are arranged in parallel, and the first link (10) is spaced above the second link (11). One end of the first link (10) and the second link (11) are respectively hinged to two points of the slag-breaking support (1) via a horizontal axis. The other end of the first link (10) and the second link (11) are respectively hinged to two points of the upper rear section of the slag-breaking gun (12) via a horizontal axis. The slag-breaking gun (12) is in an inclined posture with the upper end towards the rear and the lower end towards the front. The linear power device is located at the top inside the slag-breaking support (1). One end is hinged to the slag-breaking support (1) via a horizontal axis, and the other end is hinged to the first link (10) via a horizontal axis.

2. The RH furnace slag breaker according to claim 1, characterized in that, The linear power unit is a large-diameter cylinder (4) or a hydraulic cylinder, and both the large-diameter cylinder (4) and the hydraulic cylinder are equipped with a central sealing valve and a throttle valve.

3. The RH furnace slag breaker according to claim 1, characterized in that, The lower end of the slag-breaking gun (12) is connected to the slag-breaking head (3) via a quick-release structure.

4. The RH furnace slag breaker according to claim 1, characterized in that, The RH furnace slag breaker also includes a manual hoist or an electric hoist, which is installed on the top of the slag breaking support (1). The end of the wire rope of the manual hoist or electric hoist is provided with a hook that can be hooked on the reserved suspension point of the four-bar linkage (2).

5. The RH furnace slag breaker according to claim 1, characterized in that, The slag breaking support (1) is provided with two buffer devices (9), which are located between the two extreme positions of the four-bar linkage (2) and the slag breaking support (1).

6. The RH furnace slag breaker according to claim 1, characterized in that, The RH furnace slag breaker also includes a mobile platform, and the slag breaking support (1) is installed on the mobile platform.

7. The RH furnace slag breaker according to claim 6, characterized in that, The mobile platform includes a track, a servo-driven mobile track trolley (5), a servo motor, a gear, and a rack. The servo-driven mobile track trolley (5) can move along the track. The servo motor is mounted on the servo-driven mobile track trolley (5). The gear is mounted on the output shaft of the servo motor or a reducer connected to the servo motor. The rack is arranged along the track, and the gear meshes with the rack.

8. The RH furnace slag breaker according to claim 7, characterized in that, The RH furnace slag breaker also includes a slag knocking device (7). The slag knocking device (7) is installed on the side of the track and spaced apart from the track. The top of the slag knocking device (7) is provided with an inclined slag knocking surface. When the servo moving track trolley (5) is in the slag knocking position, the slag breaking gun (12) presses down to hit the slag knocking device to achieve automatic slag knocking.

9. The RH furnace slag breaker according to claim 8, characterized in that, The RH furnace slag breaker further comprises a limiting locking mechanism (6), the limiting locking mechanism (6) comprises a limiting cylinder, a limiting pin shaft and a limiting groove (13), the limiting cylinder is arranged on the servo moving track trolley (5), the limiting pin shaft is installed on the piston rod of the limiting cylinder, and the limiting groove (13) is arranged on the track or a position opposite to the track and static, the limiting groove (13) is provided with two, respectively corresponding to the servo moving track trolley (5) in the slag breaking station and the slag knocking station, when the servo moving track trolley (5) is in the slag breaking station or the slag knocking station, the limiting cylinder can drive the limiting pin shaft to extend into the limiting groove (13).

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