A ladle overturning and pouring device for molten iron production

Abstract

The utility model belongs to metallurgical casting technical field discloses a molten iron ladle overturning and dumping device for molten iron production, including installation base and hydraulic cylinder, the top outer wall of installation base is opened with rectangular through slot, and the bottom four corners of installation base all are installed with foot brake universal wheel, the both ends of installation base top outer wall all are fixed with arc guide rail through bolt, and the inner wall sliding insertion of arc guide rail has guide wheel shaft, install fixed clamp seat between two guide wheel shafts, and the top outer wall welding of fixed clamp seat has bearing rectangular plate. The utility model through the cooperation of L type fixed frame, C type guide shell and adjusting plug, servo cylinder can drive arc sleeve shell flexible expansion, adapt to different diameter, volume's molten iron ladle, guide sliding slot and guide sliding block ensure that adjusting plug slides accurately, avoid deviation, pressure sensor real -time monitoring arc sleeve shell and the contact pressure of molten iron ladle, ensure that the fixed strength is moderate, cooperate with the mechanical self -lock of self -lock wedge and inclined surface wedge groove, prevent slack in operation.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical casting technology, and in particular to a ladle tilting and turning device for molten iron production. Background Technology

[0002] The molten iron ladle tilting and tossing device is a core piece of equipment in the metallurgical and casting industry used for the transfer and tossing of molten iron. It is mainly used in the process of transferring molten iron from the blast furnace to the steelmaking furnace, casting molds, or other processing equipment. Through its mechanical structure, it achieves the fixing, tilting, and tossing of the molten iron ladle, serving as a crucial link between ironmaking and subsequent processes, directly impacting production efficiency, molten iron utilization, and operational safety. In the continuous production of large steel enterprises, this device needs to operate frequently, simultaneously meeting requirements such as stability in handling high-temperature molten iron, precise control of the tilting angle, ease of operation, and adaptability to ladles of different sizes. It is an important piece of equipment for ensuring continuous, efficient, and safe metallurgical production.

[0003] However, existing molten iron ladle tilting and pouring devices have many shortcomings in practical applications:

[0004] Firstly, the fixed structure has poor adaptability, and most of them use clamps of fixed size, which cannot flexibly adapt to molten iron ladles of different volumes and diameters. This can easily lead to loosening of the fixing, causing the molten iron ladle to shake and posing a risk of leakage.

[0005] Secondly, the accuracy of the flipping angle control is low, relying mostly on manual operation or simple hydraulic drive, lacking real-time angle monitoring and feedback, which can easily cause incomplete pouring or splashing of molten iron due to over- or under-flipping.

[0006] Third, there is insufficient safety protection, and there is a lack of monitoring of the fixing pressure and turning speed of the molten iron ladle. When the fixing pressure is insufficient or the turning speed is abnormal, there is no timely warning or braking, which poses a safety hazard.

[0007] Fourth, the device has poor stability. When the molten iron ladle is turned over, the center of gravity shifts, which can easily cause the entire device to tilt. This is especially true when the ladle is fully loaded with molten iron, which can easily cause the equipment to overturn. Utility Model Content

[0008] This utility model addresses the shortcomings of existing technologies by providing a ladle tilting and turning device for molten iron production. It enables the firm fixing of ladles of different specifications, precise control of the tilting angle, real-time safety monitoring and braking functions, improves the overall stability of the device, and reduces manual intervention through intelligent control, thereby improving production efficiency and operational safety.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A ladle tilting and tipping device for molten iron production includes a mounting base and a hydraulic cylinder. The top outer wall of the mounting base has a rectangular through groove, and foot brake casters are installed at the four corners of the bottom of the mounting base. Arc-shaped guide rails are fixed to both ends of the top outer wall of the mounting base by bolts, and guide wheel shafts are slidably inserted into the inner wall of the arc-shaped guide rails. A fixed clamp is installed between the two guide wheel shafts, and a load-bearing rectangular plate is welded to the top outer wall of the fixed clamp. L-shaped fixing frames are evenly distributed in a ring on the top outer wall of the load-bearing rectangular plate, and C-shaped guide shells perpendicular to each other are provided through the outer wall of the relatively far side of the L-shaped fixing frames. Symmetrically distributed guide grooves are opened on the bottom inner wall of the C-shaped guide shells, and guide sliders are slidably inserted into the inner wall of the guide grooves. An adjusting block is welded to the top outer wall of the guide slider, and a servo cylinder is fixed to the outer wall of the end of the adjusting block by screws.

[0011] An arc-shaped sleeve is welded to one side of the outer wall of the adjusting plug, and pressure sensors with equal spacing are installed on the inner wall of the arc-shaped sleeve. A silicon carbide liner is inserted into the inner wall of the arc-shaped sleeve. A first fixing frame is welded to one side of the outer wall of the top surface of the mounting base, and a first laser displacement sensor is fixed to the outer wall of the first fixing frame near the rectangular through slot by screws. A second fixing frame is welded to the other side of the outer wall of the top surface of the mounting base, and a load-bearing support shell is welded vertically to one side of the top of the second fixing frame. C-shaped sliding grooves are opened through the inner walls of both sides of the load-bearing support shell, and T-shaped sliders are slidably inserted into the inner walls of the C-shaped sliding grooves. A fixing clamp is welded between the T-shaped sliders, and an electric telescopic rod is installed on the back outer wall of the fixing clamp.

[0012] Preferably, a hydraulic cylinder is rotatably mounted on the bottom of the fixed clamp, and the outer wall of the bottom of the hydraulic cylinder is rotatably mounted on the inner wall of the bottom of the mounting base through a hinge seat. The hydraulic cylinder is connected to a control valve through a pipeline, and the control valve is connected to a hydraulic pump through a pipeline.

[0013] Preferably, the outer walls of both sides of the C-shaped guide shell are connected by a protective cover, and a compression spring is welded to the inner wall of one side of the protective cover. A self-locking wedge is welded to the outer wall of the end of the compression spring, and the outer walls of both sides of the adjusting plug have equally distributed inclined wedge grooves, which are adapted to each other.

[0014] Preferably, a reinforcing strut is welded to one side of the outer wall of the arc-shaped guide rail along the inclined direction, and the angle between the reinforcing strut and the top outer wall of the mounting base is 40°-50°.

[0015] Preferably, the first fixing frame and the fixing clamp are both fitted with bearings on one side of their outer walls, and the bearing axes are on the same straight line. The fixing clamp is fixed with a hysteresis brake stator on one side of its outer wall, and a hysteresis brake rotor is provided on the inner wall of the hysteresis brake stator. The axis of the hysteresis brake rotor and the axis of the bearing are on the same straight line.

[0016] Preferably, the top outer wall of the mounting base is fixed with a bracket by screws, and a second laser displacement sensor is provided on one side of the middle of the fixed bracket. A handle is welded to one side of the outer wall of the mounting base.

[0017] Preferably, an angle sensor is installed on one outer wall along the length of the load-bearing rectangular plate, and the load-bearing rectangular plate rotates around the bearing axis by an angle of 0°-85°.

[0018] Preferably, ball screws are rotatably mounted on both sides of the inner wall of the mounting base, and a connecting plate is fixed to the outer wall of the ball screw by screws. Several counterweights are installed on the outer wall of the connecting plate, and a servo motor is connected to one end of the ball screw through a coupling.

[0019] Preferably, a PLC controller is installed on one outer wall of the mounting base, and the PLC controller is connected to a hydraulic cylinder, a servo cylinder, a pressure sensor, a first laser displacement sensor, an electric telescopic rod, a second laser displacement sensor, and a servo motor via signal lines.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. Highly adaptable and firmly fixed, capable of reliably supporting molten iron ladles of different specifications: Through the cooperation of L-shaped fixing frame, C-shaped guide shell and adjusting plug, servo cylinder can drive the arc-shaped sleeve to flexibly extend and retract, adapting to molten iron ladles of different diameters and volumes. Guide groove and guide slider ensure precise sliding of adjusting plug and avoid deviation. Pressure sensor monitors the contact pressure between arc-shaped sleeve and molten iron ladle in real time to ensure moderate fixing force. Combined with the mechanical self-locking of self-locking wedge block and inclined wedge groove, it prevents loosening during operation. At the same time, the silicon carbide liner inside the arc-shaped sleeve is high temperature resistant and wear resistant, can withstand the high temperature corrosion of molten iron, extend the service life of components, and solve the problems of single adaptability and easy loosening of traditional devices.

[0022] 2. Precise flipping control and comprehensive safety protection ensure stable and controllable molten iron pouring process: The hydraulic cylinder drives the fixed clamp to slide along the arc-shaped guide rail, and the guide wheel shaft reduces sliding friction to ensure smooth flipping. The tilt sensor monitors the rotation angle of the load-bearing rectangular plate in real time, and the data is synchronously transmitted to the PLC controller to achieve precise control of the flipping angle from 0° to 85°, avoiding excessive flipping or incomplete pouring.

[0023] In addition, the fixed clamping block, driven by the electric telescopic rod, works with the stator and rotor of the hysteresis brake to brake quickly when the flipping speed is abnormal. The reinforced support rod enhances the load-bearing capacity of the arc guide rail and prevents the guide rail from deforming, thus solving the problems of poor angle control and insufficient safety protection in traditional devices.

[0024] 3. High overall stability and superior intelligence, improving work efficiency and safety: The ball screw inside the mounting base, driven by a servo motor, moves the connecting plate and counterweight horizontally. Based on the position of the first and second laser displacement sensors, the center of gravity shift during the molten iron ladle's overturning is monitored. The servo motor drives the counterweight to move synchronously in the opposite direction, offsetting the overturning torque caused by the center of gravity shift, thus achieving dynamic center of gravity compensation and preventing the device from tilting and overturning. Furthermore, the PLC controller integrates signals from hydraulic cylinders, servo cylinders, and various sensors to achieve fully automated control of the fixing, overturning, braking, and resetting processes, reducing manual intervention and solving the problems of poor stability and reliance on manual operation in traditional devices, significantly improving production efficiency and work safety. Attached Figure Description

[0025] Figure 1 This is a front view of the overall structure of a ladle tilting and turning device for molten iron production proposed in this utility model;

[0026] Figure 2 This is a side view of the overall structure of a ladle tilting and turning device for molten iron production proposed in this utility model;

[0027] Figure 3 This is a front view of the overall structure of a ladle tilting and turning device for molten iron production proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the internal structure of the mounting base of a ladle tilting and overturning device for molten iron production proposed in this utility model.

[0029] Figure 5 This is a three-dimensional schematic diagram of a partial structure of a ladle tilting and turning device for molten iron production proposed in this utility model.

[0030] Figure 6 This is a partial front view of the molten iron ladle tilting and turning device for molten iron production proposed in this utility model;

[0031] Figure 7 This is a partial structural side view of a ladle tilting and turning device for molten iron production proposed in this utility model.

[0032] In the diagram: 1. Mounting base; 2. Rectangular through slot; 3. Foot brake caster; 4. Arc-shaped guide rail; 5. Guide wheel shaft; 6. Fixed clamp; 7. Load-bearing rectangular plate; 8. Hydraulic cylinder; 9. Control valve; 10. Hydraulic pump; 11. L-shaped fixing bracket; 12. C-shaped guide shell; 13. Adjusting block; 14. Guide groove; 15. Guide slider; 16. Servo cylinder; 17. Arc-shaped sleeve; 18. Pressure sensor; 19. Silicon carbide liner; 20. Inclined wedge groove; 21. Protective cover; 22. Self-locking wedge; 23. Compression spring. 24. Spring; 25. Reinforcing strut; 26. First fixed frame; 27. First laser displacement sensor; 28. Second fixed frame; 29. ​​Load-bearing support shell; 30. C-shaped slide rail; 31. T-shaped slider; 32. Fixed clamp; 33. Electric telescopic rod; 34. Hysteresis brake stator; 35. Hysteresis brake rotor; 36. Bracket; 37. Second laser displacement sensor; 38. Handrail; 39. Tilt sensor; 40. Ball screw; 41. Connecting plate; 42. Counterweight; 43. Servo motor; 44. PLC controller. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0034] Example 1, referring to Figure 1-7 A ladle tilting and tipping device for molten iron production includes a mounting base 1 and a hydraulic cylinder 8. The top outer wall of the mounting base 1 has a rectangular through groove 2, and four foot brake casters 3 are installed at the four corners of the bottom of the mounting base 1. Arc-shaped guide rails 4 are bolted to both ends of the top outer wall of the mounting base 1, and guide wheel shafts 5 are slidably inserted into the inner wall of the arc-shaped guide rails 4. A fixed clamp 6 is installed between the two guide wheel shafts 5, and a load-bearing rectangular plate 7 is welded to the top outer wall of the fixed clamp 6. The top outer wall of the load-bearing rectangular plate 7 is ring-shaped with L-shaped fixing brackets 11 evenly distributed. The outer wall of the L-shaped fixing brackets 11, which are relatively far apart, is provided with mutually perpendicular C-shaped guide shells 12. The bottom inner wall of the C-shaped guide shell 12 has symmetrically distributed guide grooves 14. The inner wall of the guide grooves 14 is slidably inserted with guide sliders 15. The top outer wall of the guide sliders 15 is welded with adjusting blocks 13. The outer wall of the end of the adjusting blocks 13 is fixed with servo cylinders 16 by screws.

[0035] An arc-shaped sleeve 17 is welded to one side of the outer wall of the adjusting plug 13, and pressure sensors 18 are installed at equal intervals on the inner wall of the arc-shaped sleeve 17. A silicon carbide liner 19 is inserted into the inner wall of the arc-shaped sleeve 17. A first fixing frame 25 is welded to one side of the outer wall of the top surface of the mounting base 1. A first laser displacement sensor 26 is fixed to the outer wall of the first fixing frame 25 near the rectangular through groove 2 by screws. A second fixing frame 27 is welded to the outer wall of the other side of the top surface of the mounting base 1. A load-bearing support shell 28 is welded to the outer wall of the top side of the second fixing frame 27 in the vertical direction. C-shaped sliding grooves 29 are opened through both sides of the inner wall of the load-bearing support shell 28. T-shaped sliders 30 are slidably inserted into the inner wall of the C-shaped sliding grooves 29. A fixing clamp 31 is welded between the T-shaped sliders 30. An electric telescopic rod 32 is installed on the back outer wall of the fixing clamp 31.

[0036] A hydraulic cylinder 8 is rotatably mounted on the bottom of the fixed clamp 6, and the outer wall of the bottom of the hydraulic cylinder 8 is rotatably mounted on the inner wall of the bottom of the mounting base 1 through a hinge seat. The hydraulic cylinder 8 is connected to a control valve 9 through a pipeline, and the control valve 9 is connected to a hydraulic pump 10 through a pipeline. Both outer walls of the C-shaped guide shell 12 are connected to a protective cover 21, and a compression spring 23 is welded to one inner wall of the protective cover 21. A self-locking wedge 22 is welded to the outer wall of the end of the compression spring 23, and equidistant inclined wedge grooves 20 are opened on both outer walls of the adjusting plug 13. The inclined wedge grooves 20 and the self-locking wedge 22 are mutually adapted.

[0037] A reinforcing strut 24 is welded to one side of the outer wall of the arc-shaped guide rail 4 along the inclined direction, and the angle between the reinforcing strut 24 and the top outer wall of the mounting base 1 is 40°-50°. Bearings are embedded in one side of the outer wall of the first fixing frame 25 and the fixing clamp 31, and the axis of the bearing is located on the same straight line. A hysteresis brake stator 33 is fixed to one side of the outer wall of the fixing clamp 31, and a hysteresis brake rotor 34 is provided on the inner wall of the hysteresis brake stator 33. The axis of the hysteresis brake rotor 34 and the axis of the bearing are located on the same straight line.

[0038] The top outer wall of the mounting base 1 is fixed with a bracket 35 by screws, and a second laser displacement sensor 36 is provided on one side of the middle of the bracket 35. A handle 37 is welded to one side of the outer wall of the mounting base 1. An angle sensor 38 is installed on one side of the outer wall of the load-bearing rectangular plate 7 along its length, and the load-bearing rectangular plate 7 rotates at an angle of 0°-85° with the bearing axis as the center.

[0039] Example 2, refer to Figure 1-7A ladle tilting and turning device for molten iron production includes a mounting base 1 providing a foundation for the device, a rectangular through groove 2 providing space for the movement of a hydraulic cylinder 8, a foot brake universal wheel 3 enabling flexible movement and fixation of the device, an arc-shaped guide rail 4 providing guidance for the tilting of the fixed clamp 6, and a guide wheel shaft 5 reducing sliding friction to ensure smooth tilting; a load-bearing rectangular plate 7 welded to the top of the fixed clamp 6 is used to support the molten iron ladle and also provides an installation carrier for the L-shaped fixed frame 11.

[0040] Through the above-mentioned solution, this part of the structure provides a stable foundation and guidance for the flipping action of the device, ensuring that the molten iron ladle will not shift during the flipping process, thus improving the stability of the flipping.

[0041] The C-shaped guide shell 12 on the L-shaped fixing frame 11 provides a sliding track for the adjusting plug 13. The guide groove 14 cooperates with the guide slider 15 to ensure that the adjusting plug 13 slides accurately. The servo cylinder 16 provides power for the movement of the adjusting plug 13, so as to realize the rapid fitting of the arc-shaped sleeve 17 with the molten iron ladle.

[0042] Through the above scheme, the structure enables flexible adjustment of the fixed position of the molten iron ladle, which can be quickly adjusted according to the actual size of the molten iron ladle, thereby improving the device's adaptability to molten iron ladles of different specifications.

[0043] The pressure sensor 18 on the inner wall of the arc-shaped sleeve 17 monitors the contact pressure with the molten iron ladle in real time to ensure that the fixing force is appropriate; the silicon carbide liner 19 is heat resistant to prevent the molten iron from damaging the arc-shaped sleeve 17 at high temperature; the compression spring 23 in the protective cover 21 pushes the self-locking wedge block 22 to cooperate with the inclined wedge groove 20, and automatically locks after the adjusting plug 13 is in place to prevent loosening.

[0044] Through the above solution, this part not only realizes real-time monitoring of fixed pressure and ensures the firmness of the fixation, but also avoids accidental movement of the adjusting plug 13 during operation through the self-locking structure. At the same time, the silicon carbide liner 19 extends the service life of the device and enhances its reliability in high-temperature environments.

[0045] The first fixed frame 25 and the second fixed frame 27 provide installation support for the first laser displacement sensor 26 and the load-bearing support shell 28, respectively; the C-shaped slide groove 29 in the load-bearing support shell 28 cooperates with the T-shaped slider 30 to ensure that the fixed clamping block 31 moves smoothly; the electric telescopic rod 32 drives the fixed clamping block 31 to approach the molten iron ladle, and cooperates with the hysteresis brake stator 33 and rotor 34 to achieve braking during the flipping process and avoid excessive flipping speed.

[0046] Through the above scheme, the structure provides the device with accurate position monitoring and stable braking function. The first laser displacement sensor 26 can provide real-time feedback on the position information of the molten iron ladle, and the hysteresis brake can brake quickly and smoothly when needed, effectively preventing safety accidents caused by overturning and loss of control.

[0047] The reinforcing strut 24 forms a 40°-50° angle with the mounting base 1 to enhance the load-bearing capacity of the arc-shaped guide rail 4 and prevent the guide rail from deforming when flipped; the second laser displacement sensor 36 on the bracket 35 assists in monitoring the height of the molten iron ladle, and the handle 37 facilitates the movement of the device.

[0048] Through the above-mentioned solutions, the reinforced strut 24 significantly improves the structural strength of the arc-shaped guide rail 4, enabling it to withstand the weight of the molten iron ladle when fully loaded. The second laser displacement sensor 36 supplements the position monitoring dimension and improves the comprehensiveness of monitoring. The handle 37 enhances the ease of movement of the device.

[0049] In Example 3, the ball screw 39 in the mounting base 1 rotates under the drive of the servo motor 42, which drives the connecting plate 40 and the counterweight 41 to move horizontally. The counterweight is adjusted according to the weight of the molten iron ladle to balance the center of gravity of the device. The PLC controller 43 receives signals from various sensors and automatically controls the actions of components such as the hydraulic cylinder 8 and the servo cylinder 16 to achieve full-process automation.

[0050] Through the above solution, the structure solves the problem of device instability caused by the shift of the center of gravity when the molten iron ladle is flipped. The adjustability of the counterweight 41 allows the device to adapt to molten iron ladles of different weights, while the intelligent control of the PLC controller 43 reduces manual operation and improves work efficiency and accuracy. At the same time, centralized control of each component ensures the coordination and consistency of the actions.

[0051] Example 4, refer to Figure 1-7 A ladle tilting and turning device for molten iron production is provided. The PLC controller is a Siemens SIMATIC S7-1214CDC / DC / DC (model 6ES7214-1AG40-0XB0) as the main controller. This model has 14 digital inputs, 10 digital outputs and 2 analog inputs / 2 analog outputs, supports high-speed pulse output (up to 100kHz) and RS485 communication expansion, and meets the signal acquisition and control requirements of the equipment.

[0052] Pressure sensor 18: An Omron E8F2-AN02 pressure sensor (0-1MPa range, 4-20mA output) is used. It is installed on the inner wall of the arc-shaped housing 17. Its signal line (brown to 24V+, blue to 0V, black to signal output) is connected to the AI0.0 port of the PLC analog input module to provide real-time feedback on the fixed pressure of the molten iron ladle.

[0053] Tilt sensor 38: Selected is Beiwei Sensing BWM416-485 (RS485 output, 9600bps baud rate), installed on the side of the fixed bracket 6, and connected to the RS485 signal board (model SB1223) of the PLC through shielded twisted pair cable. Line A is connected to pin 3 of the PLC and line B is connected to pin 8, used to monitor the tilt angle.

[0054] First laser displacement sensor 26 and second laser displacement sensor 36: Keyence LK-G5000 laser displacement sensors are used. The first laser displacement sensor 26 is installed on the first fixed frame 25, and the second laser displacement sensor 36 is installed on the bracket 35. Their 4-20mA analog outputs are connected to the PLC analog input ports AI0.1 and AI0.2 respectively, and the laser control signal line is connected to the PLC digital input I0.0 (laser start and stop control).

[0055] Servo cylinder 16: It adopts an SMCLE series electric actuator (model LEC80B-200). The COM+ of the control port CN5 is connected to the PLC 24V output, and the COM- is connected to 0V. The control signal A1 (extend) is connected to the PLC digital output Q0.0, and A2 (retract) is connected to Q0.1 to realize the extension and retraction control of the arc-shaped housing 17.

[0056] Hydraulic system: Hydraulic pump 10 is controlled by Rexroth 4WE10E5X / EG24N9K4M solenoid directional valve (DC24V coil). The positive terminal of the coil is connected to PLC output Q0.2 via a relay, and the negative terminal is connected to 0V. The signal terminal of control valve 9 is connected to PLC Q0.3 to realize the extension and retraction control of hydraulic cylinder 8.

[0057] Servo motor 42: Delta ASDA-B2 series servo system (model ASD-B2-0721-B+ECMA-C20807RS) drives ball screw 39. The pulse input (PUL) of the servo driver is connected to the high-speed pulse output Q0.4 of the PLC, the direction input (DIR) is connected to Q0.5, and the enable signal (ENA) is connected to Q0.6. The position adjustment of the counterweight 41 is realized through the Modbus protocol.

[0058] Braking device: The signal terminal of the electric telescopic rod 32 (model TECNA550) is connected to PLCQ0.7, and the power terminals of the hysteresis brake 33-34 are connected to PLCQ1.0 through a contactor to realize the overturning braking control.

[0059] All equipment is powered by DC 24V, with power distributed uniformly through a junction box. Sensor signals are connected to the PLC input module via shielded cables, and actuators are connected to the PLC output module via relays or drivers, forming a closed-loop control of "sensor acquisition → PLC calculation → actuator action". The PLC enables remote monitoring via an integrated Ethernet port (10 / 100MB / s). Galvanized steel pipes must be used for shielding during wiring to avoid electromagnetic interference.

[0060] Working principle: At the beginning of operation, push the mounting base 1 with the handle 37, and use the bottom foot brake caster 3 to move the device to the designated position and lock the foot brake to ensure the device is stable. Place the molten iron ladle on the load-bearing rectangular plate 7. The PLC controller 43 starts the servo cylinder 16, which drives the adjusting block 13 to slide along the guide groove 14 in the C-shaped guide shell 12 (the guide slider 15 ensures accurate sliding trajectory), so that the arc-shaped sleeve 17 gradually fits against the outer wall of the molten iron ladle. At this time, the pressure sensor 18 on the inner wall of the arc-shaped sleeve 17 monitors the contact pressure in real time. When the pressure reaches the preset threshold, the PLC controller 43 sends a signal, and the compression spring 23 in the protective cover 21 pushes the self-locking wedge 22 to engage with the inclined wedge groove 20 on both sides of the adjusting block 13, completing the mechanical self-locking and preventing the molten iron ladle from becoming loose. At the same time, the silicon carbide liner 19 isolates the high temperature of the molten iron and protects the arc-shaped sleeve 17 from damage.

[0061] After fixing, start the servo motor 42 to drive the ball screw 39 in the mounting base 1 to rotate, which in turn drives the connecting plate 40 and the counterweight 41 to move horizontally and dynamically adjust the center of gravity of the device. This process can balance the center of gravity shift when the molten iron ladle is flipped. In conjunction with the reinforcing support rod 24 on one side of the arc-shaped guide rail 4 (which forms an angle of 40°-50° with the mounting base 1), the load-bearing capacity of the guide rail is enhanced, ensuring the overall stability of the device from both structural and counterweight aspects.

[0062] During the flipping phase, the PLC controller 43 controls the hydraulic pump 10 to operate and adjusts the extension and retraction of the hydraulic cylinder 8 through the control valve 9, pushing the fixed clamp 6 to rotate along the arc-shaped guide rail 4 with the guide wheel shaft 5 as the fulcrum, thereby driving the load-bearing rectangular plate 7 and the molten iron ladle to flip. During the flipping process, the tilt sensor 38 on one side of the load-bearing rectangular plate 7 monitors the flipping angle in real time (ensuring it is within the range of 0°-85°). The first laser displacement sensor 26 and the second laser displacement sensor 36 monitor the center of gravity offset when the molten iron ladle flips. The servo motor 42 drives the counterweight block 41 to move synchronously in the opposite direction to counteract the overturning torque caused by the center of gravity offset, thereby achieving dynamic center of gravity compensation and preventing the device from tilting and overturning. If the angle or position deviates from the preset value, the PLC controller 43 adjusts the extension and retraction speed of the hydraulic cylinder 8 in real time to ensure accurate flipping.

[0063] When the molten iron ladle is tilted to the target angle, the PLC controller 43 activates the electric telescopic rod 32, which pushes the fixed clamping block 31 to slide along the C-shaped slide groove 29 inside the load-bearing support shell 28, bringing it close to the side of the molten iron ladle and fixing the trunnion of the molten iron ladle. At this time, the hysteresis brake stator 33 on one side of the fixed clamping block 31 cooperates with the hysteresis brake rotor 34 to generate braking resistance according to the signal issued by the PLC controller 43, so as to avoid the molten iron from splashing out due to excessive tilting speed and achieve smooth deceleration.

[0064] After the pouring is completed, the PLC controller 43 reverses the control of the hydraulic cylinder 8 to retract, causing the fixed clamp 6 and the molten iron ladle to reset along the arc-shaped guide rail 4. During the reset process, each sensor continuously monitors the position and angle to ensure accurate repositioning. Subsequently, the self-locking wedge 22 is pressed back, causing it to disengage from the inclined wedge groove 20. At the same time, the servo cylinder 16 reverses its action, causing the adjusting plug 13 to retract, and the arc-shaped sleeve 17 releases the molten iron ladle, completing the entire operation process.

[0065] The entire working process is centered on the PLC controller 43, which integrates detection signals from pressure sensor 18, tilt sensor 38, first laser displacement sensor 26 and second laser displacement sensor 36, and links and controls actuators such as servo cylinder 16, hydraulic cylinder 8 and servo motor 42 to achieve fully automated operation from fixing to resetting. This ensures the accuracy and safety of molten iron ladle flipping, and improves work efficiency through structural optimization and intelligent control.

[0066] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0067] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ladle tilting and pouring device for hot metal production, comprising a mounting base (1) and a hydraulic cylinder (8), characterized in that, The top outer wall of the mounting base (1) has a rectangular through groove (2), and foot brake casters (3) are installed at the four corners of the bottom of the mounting base (1). Arc-shaped guide rails (4) are fixed to both ends of the top outer wall of the mounting base (1) by bolts, and guide wheel shafts (5) are slidably inserted into the inner wall of the arc-shaped guide rails (4). A fixed clamp (6) is installed between the two guide wheel shafts (5), and a load-bearing rectangular plate (7) is welded to the top outer wall of the fixed clamp (6). The top outer wall of the load-bearing rectangular plate (7) is annular. The L-shaped fixing brackets (11) are installed at equal intervals, and the outer wall of the L-shaped fixing brackets (11) on the side that is relatively far apart is provided with mutually perpendicular C-shaped guide shells (12). The bottom inner wall of the C-shaped guide shells (12) has symmetrically distributed guide grooves (14), and the inner wall of the guide grooves (14) is slidably inserted with guide sliders (15). The top outer wall of the guide sliders (15) is welded with adjusting blocks (13), and the outer wall of the end of the adjusting blocks (13) is fixed with servo cylinders (16) by screws. An arc-shaped sleeve (17) is welded to one side of the outer wall of the adjusting plug (13), and pressure sensors (18) are installed at equal intervals on the inner wall of the arc-shaped sleeve (17). A silicon carbide liner (19) is inserted into the inner wall of the arc-shaped sleeve (17), and a first fixing bracket (25) is welded to one side of the outer wall of the top surface of the mounting base (1). A first laser displacement sensor (26) is fixed to the outer wall of the first fixing bracket (25) near the rectangular through slot (2) by screws. A second fixing frame (27) is welded to the outer wall of the top surface of the base (1), and a load-bearing support shell (28) is welded to the outer wall of the top side of the second fixing frame (27) in the vertical direction. C-shaped grooves (29) are opened through the inner walls of both sides of the load-bearing support shell (28), and T-shaped sliders (30) are slidably inserted into the inner wall of the C-shaped grooves (29). Fixed clamps (31) are welded between the T-shaped sliders (30), and an electric telescopic rod (32) is installed on the back outer wall of the fixed clamps (31).

2. The ladle tilting device according to claim 1, wherein The bottom of the fixed clamp (6) is rotatably mounted with a hydraulic cylinder (8), and the bottom outer wall of the hydraulic cylinder (8) is rotatably mounted on the bottom inner wall of the mounting base (1) through a hinge seat. The hydraulic cylinder (8) is connected to a control valve (9) through a pipeline, and the control valve (9) is connected to a hydraulic pump (10) through a pipeline.

3. The ladle tilting device according to claim 1, wherein The outer walls of both sides of the C-shaped guide shell (12) are connected by a protective cover (21), and a compression spring (23) is welded to one inner wall of the protective cover (21). A self-locking wedge (22) is welded to the outer wall of the end of the compression spring (23), and the outer walls of both sides of the adjusting plug (13) are provided with equally spaced inclined wedge grooves (20), which are adapted to each other.

4. The ladle tilting device according to claim 1, wherein The outer wall of the arc-shaped guide rail (4) is welded with a reinforcing strut (24) along the inclined direction, and the angle between the reinforcing strut (24) and the top outer wall of the mounting base (1) is 40°-50°.

5. The ladle tilting device according to claim 1, wherein The first fixing frame (25) and the fixing clamp (31) are both fitted with bearings on one side of their outer walls, and the bearing axes are on the same straight line. The fixing clamp (31) is fixed with a hysteresis brake stator (33) on one side of its outer wall, and a hysteresis brake rotor (34) is provided on the inner wall of the hysteresis brake stator (33). The axis of the hysteresis brake rotor (34) and the axis of the bearing are on the same straight line.

6. The ladle tilting device according to claim 1, wherein The mounting base (1) has a bracket (35) fixed to its top outer wall by screws, and a second laser displacement sensor (36) is provided on one side of the middle of the bracket (35). A handle (37) is welded to one side of the mounting base (1).

7. The ladle tilting device according to claim 1, wherein An angle sensor (38) is installed on one side of the outer wall of the load-bearing rectangular plate (7) along the length direction, and the load-bearing rectangular plate (7) rotates at an angle of 0°-85° with the bearing axis as the center.

8. The ladle tilting device according to claim 6, wherein The mounting base (1) has ball screws (39) rotatably mounted on both sides of its inner wall, and the outer wall of the ball screws (39) is fixed with a connecting plate (40) by screws. The outer wall of the connecting plate (40) is equipped with several counterweights (41), and one end of the ball screws (39) is connected to a servo motor (42) through a coupling.

9. The ladle tilting device according to claim 8, wherein A PLC controller (43) is installed on one side of the outer wall of the mounting base (1), and the PLC controller (43) is connected to a hydraulic cylinder (8), a servo cylinder (16), a pressure sensor (18), a first laser displacement sensor (26), an electric telescopic rod (32), a second laser displacement sensor (36), and a servo motor (42) via signal lines.

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