Ladle tilting pouring device and tilting method

Abstract

The invention relates to the technical field of ladle tilting pouring, in particular to a ladle tilting pouring device and a tilting method.The ladle tilting pouring device comprises a pouring cylinder with an upward opening, the pouring cylinder is provided with a liquid outlet and a connecting protrusion, and a rotating shaft is fixedly installed on the connecting protrusion; when meshing of the tilting mechanism, the ratchet wheel and the pawl or the gear fails, the brake mechanism can intervene in control in time, namely the rotating shaft slightly rotates to trigger the linkage shaft to wind the traction rope and drive the brake shaft to accelerate, so that the limiting block is thrown out by centrifugal force and embedded into the limiting groove, the brake shaft is quickly locked, the rotating shaft stops rotating, and the pouring cylinder is prevented from overturning. Accidents such as burning and fire caused by splashing of molten iron are reduced, and the safety of personnel and equipment is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of molten iron ladle tilting and pouring, and in particular to a molten iron ladle tilting and pouring device and tilting method. Background Technology

[0002] Ladles are widely used in steel production to hold and transport molten iron at high temperatures. They must not only bear the weight of the molten iron but also ensure the safe and stable transport of the molten iron during production and pouring. Ladles are usually made of refractory materials that can withstand high temperatures and are designed to be tiltable so that the molten iron can be poured out smoothly for pouring when needed.

[0003] For example, patent application CN209174896U discloses a ladle tilting device with adjustable pouring position, including a support frame placed on a working platform via bottom rollers; a tilting cylinder mounted on the outside of the support frame and hinged to the upper part of the tilting frame; a tilting frame hinged between the support frames for placing the ladle; a moving cylinder fixed to the bottom of the working platform, with its piston rod connected to the bottom of the support frame via a connecting plate passing through a platform slot; and a lifting device located at the bottom of the working platform.

[0004] While the aforementioned existing technologies can precisely adjust the ladle to align the pouring gate with the appropriate position before pouring, reducing waste and ensuring high safety, the following problems still exist: Although workers will periodically inspect the ladle, if the drive device that rotates the ladle fails during use, the ladle cannot be braked in time, and the molten iron inside the ladle may overflow. This will not only cause production interruption and waste of raw materials, but may also lead to major safety accidents such as burns, fires, or even explosions, posing a direct threat to personnel and equipment. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this application provides a molten iron ladle tilting and pouring device and tilting method, adopting the following technical solution: In a first aspect, there is a molten iron ladle tilting pouring device, comprising a pouring cylinder with its opening facing upward, wherein the pouring cylinder has a liquid outlet and a connecting protrusion, and a rotating shaft is fixedly installed on the connecting protrusion.

[0006] The outside of the casting cylinder is provided with a C-shaped lifting frame with the opening facing downwards. The two vertical sections of the lifting frame correspond one-to-one with the rotating shaft. The rotating shaft is rotatably mounted on the vertical section of the corresponding side of the lifting frame through bearings.

[0007] The vertical section of the hoisting frame near the rotating shaft is a rectangular structure with a cavity inside. The end of the rotating shaft away from the connecting protrusion passes through the cavity.

[0008] One cavity is equipped with a braking mechanism, and the other cavity is equipped with a tilting mechanism.

[0009] The tilting mechanism works in conjunction with an existing drive shaft, which drives the rotating shaft to rotate through gear meshing, and the drive shaft is equipped with a ratchet and a pawl to achieve unidirectional rotation.

[0010] Preferably, the braking mechanism includes a gear located on the portion of the rotating shaft within the cavity.

[0011] The inner wall of the cavity is rotatably mounted with a linkage shaft via a bearing, and a gear two that meshes with the corresponding gear one is mounted on the linkage shaft.

[0012] An annular limiting frame is installed at the top of the cavity via a connecting protrusion. A brake shaft is rotatably installed inside the cavity via a bearing, and the brake shaft passes through the annular limiting frame and can rotate freely within it.

[0013] Both the brake shaft and the linkage shaft are wound with traction ropes, which connect the two.

[0014] Preferably, the brake shaft is located on the circumferential surface inside the annular limiting frame, where a plurality of rectangular grooves are evenly formed along the circumference. An elastic telescopic rod is installed in the rectangular groove, and a limiting block is installed at the telescopic end of the elastic telescopic rod.

[0015] The annular limiting frame has limiting slots inside that correspond one-to-one with the rectangular grooves.

[0016] Preferably, the diameter of gear one is much larger than the diameter of gear two, and the two form a gear transmission pair with a large transmission ratio.

[0017] Preferably, a telescopic spring rod is installed on the inner wall of the cavity. The telescopic spring rod is located between the brake shaft and the linkage shaft, and a fixed pulley is installed at its telescopic end. The traction rope passes around the fixed pulley.

[0018] Preferably, in the non-working state, the telescopic spring rod always remains in a stretched state, applying tension to the traction rope through the fixed pulley.

[0019] Preferably, a disc spring for resetting the brake shaft is installed on the annular limiting frame.

[0020] Multiple obstruction blocks are mounted on the limiting block via spring hinges, and a blocking block that cooperates with the obstruction blocks is installed in the limiting groove. The blocking block is provided with a guide slope that cooperates with the limiting block.

[0021] The limiting block is also equipped with a fixing block for limiting the obstruction block.

[0022] Preferably, the rectangular groove has a clearance groove inside for avoiding the obstruction block, and the clearance groove is used to prevent the obstruction block from colliding with the rectangular groove when it moves.

[0023] Preferably, the circumferential distance between the rectangular groove and the adjacent limiting groove is designed to be a minimum value in order to achieve a rapid locking response of the brake shaft.

[0024] Secondly, a method for tilting a molten iron ladle includes the following steps: S1: The drive shaft provides power and transmits rotational motion to the rotating shaft through gear meshing. The ratchet and pawl limit the unidirectional rotation of the drive shaft, and the rotating shaft drives the casting cylinder to start tilting around its own axis.

[0025] S2: When the casting cylinder tilts forward, the rotating shaft drives the linkage shaft near the liquid outlet to rotate and rewind the traction rope. The brake shaft accelerates the rotation, causing the limiting block to be subjected to centrifugal force and press against the annular limiting frame. After the limiting block is aligned with the limiting groove, it is embedded to achieve forward tilting limitation.

[0026] S3: When the casting cylinder tilts backward, the rotating shaft drives the linkage shaft away from the liquid outlet to accelerate the brake shaft, and the limit block is embedded in the limit groove to achieve backward tilting limit.

[0027] S4: After the limit block is inserted, the obstruction block and the blocking block lock together, the transmission pair formed by gear one and gear two amplifies the rotation angle, the telescopic spring rod keeps the traction rope taut through the fixed pulley, and the disc spring assists the brake shaft to reset.

[0028] In summary, this application includes at least one of the following beneficial technical effects: 1. When the tilting mechanism, ratchet pawl, or gear engagement fails, the braking mechanism can intervene in time to control the situation. That is, a slight rotation of the rotating shaft can trigger the linkage shaft to wind up the traction rope, which will accelerate the brake shaft. This will cause the limit block to be thrown out by centrifugal force and embedded in the limit groove, quickly locking the brake shaft and stopping the rotating shaft. This will prevent the casting cylinder from overturning, reduce the risk of burns and fires caused by molten iron spillage, and ensure the safety of personnel and equipment.

[0029] 2. When the casting cylinder tilts forward or backward, the power is transmitted to the corresponding side linkage shaft. Through the same traction rope and brake shaft, the angle limit is completed. The distance between the rectangular groove and the limit groove is very small. With the help of a large transmission ratio gear pair, the rotation angle is amplified, allowing the braking mechanism to respond quickly and ensure that the casting cylinder is locked in time to prevent the casting cylinder from overturning and reduce the possibility of molten iron spillage.

[0030] 3. The telescopic spring rod keeps the traction rope taut through the fixed pulley to prevent it from slack and knotting. The obstruction block and the blocking block cooperate to lock the limit block firmly in the limit groove to prevent it from slipping. When the limit is released, the reset can be completed with the help of the disc spring and the external device. The above steps work together to ensure the stability of the entire tilting, braking and reset process. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0032] Figure 2 This is the front view of the present invention.

[0033] Figure 3 This invention is in Figure 2 A schematic diagram of the internal structure of the cavity from a certain perspective.

[0034] Figure 4 This is a schematic diagram of the installation structure of the present invention before the brake shaft is fixed relative to the annular limiting frame.

[0035] Figure 5 This is a schematic diagram of the installation structure after the brake shaft and the annular limiting frame of the present invention are fixed relative to each other.

[0036] Figure 6 This is the present invention. Figure 5 A magnified view of part A.

[0037] Figure 7 This is a schematic diagram of the installation structure between the obstruction block, blocking block, and limiting block of the present invention.

[0038] Explanation of reference numerals in the attached drawings: 1. Casting cylinder; 11. Liquid outlet; 12. Connecting protrusion; 13. Rotating shaft; 14. Lifting frame; 15. Cavity; 2. Braking mechanism; 3. Tilting mechanism; 21. Gear one; 22. Linkage shaft; 23. Gear two; 24. Annular limit frame; 25. Brake shaft; 26. Traction rope; 251. Rectangular groove; 252. Elastic telescopic rod; 253. Limiting block; 254. Limiting groove; 151. Telescopic spring rod; 152. Fixed pulley; 241. Disc spring; 242. Obstruction block; 243. Blocking block; 244. Fixing block. Detailed Implementation

[0039] The following is in conjunction with the appendix Figures 1 to 7 This application will be described in further detail.

[0040] This application discloses a molten iron ladle tilting and pouring device and tilting method. By locking and limiting the pouring cylinder in time when it fails, the possibility of the pouring cylinder overturning and causing molten iron to leak out can be avoided.

[0041] A molten iron ladle tilting pouring device includes a pouring cylinder 1 with its opening facing upwards, a liquid outlet 11 on the pouring cylinder 1, a connecting protrusion 12 on the pouring cylinder 1, a rotating shaft 13 mounted on the connecting protrusion 12, and a hoisting frame 14 with a U-shaped structure and its opening facing downwards on the outside of the pouring cylinder 1. Two vertical sections on the hoisting frame 14 correspond one-to-one with the rotating shaft 13, and the rotating shaft 13 is rotatably mounted on the vertical section on the corresponding side of the hoisting frame 14 through bearings.

[0042] The rotating shaft 13 is fixedly installed on the corresponding connecting protrusion 12. The vertical section of the hoisting frame 14 near the corresponding rotating shaft 13 is set as a rectangular structure. A cavity 15 is opened inside the rectangular structure to increase the subsequent operating space of the device. The end of the rotating shaft 13 away from the connecting protrusion 12 passes through the cavity 15.

[0043] A braking mechanism 2 for controlling the corresponding rotating shaft 13 is provided inside any cavity 15, and a tilting mechanism 3 is provided inside another cavity 15 away from the braking mechanism 2.

[0044] The tilting mechanism 3 adopts a structural design that is common knowledge in the field and does not require innovative improvements. In actual operation, the power source is provided by the drive shaft (not shown in the figure) configured in the prior art. The rotational motion of the drive shaft is transmitted to the rotating shaft 13 through gear meshing.

[0045] Meanwhile, the drive shaft works in conjunction with the ratchet and pawl limiting components to achieve unidirectional rotation of the drive shaft. Through the ratchet tooth structure and the pawl working together, the drive shaft is restricted to rotating only in a preset direction, effectively avoiding the possibility of the drive shaft reversing due to the reverse force of the load, and ensuring the reliability of the device operation.

[0046] Therefore, when the rotating shaft 13 rotates synchronously under the drive of the drive shaft, it can directly act on the casting cylinder 1 and drive the casting cylinder 1 to rotate around the axis of the rotating shaft 13, thereby realizing the controllable tilting action of the casting cylinder 1, so that the molten iron contained in the cylinder can be poured out smoothly, and the transfer and casting of molten iron can be completed.

[0047] During the tilting process of the casting cylinder 1, there may be failures of the ratchet, pawl, and gear meshing, which may cause the casting cylinder 1 to overturn. The braking mechanism 2 provided by the present invention cooperates with the rotating shaft 13 to control the casting cylinder 1 in a timely manner. Specifically, the part of the rotating shaft 13 located inside the cavity 15 is provided with two gears 21 along its length. A linkage shaft 22 that meshes with gear 21 is rotatably mounted on the inner wall of the cavity 15 through a bearing. A gear 23 that meshes with the corresponding gear 21 is mounted on the linkage shaft 22. An annular limiting frame 24 corresponding to gear 23 is mounted on the top of the cavity 15 through a connecting protrusion 12. A brake shaft 25 that passes through the corresponding annular limiting frame 24 is rotatably mounted inside the cavity 15 through a bearing. The brake shaft 25 can rotate freely inside the annular limiting frame 24. A traction rope 26 is wound around the brake shaft 25, and the other end of the traction rope 26 is wound around the corresponding linkage shaft 22.

[0048] The brake shaft 25 is located inside the annular limit frame 24 and has a plurality of rectangular grooves 251 evenly distributed along its circumference. An elastic telescopic rod 252 is installed inside the rectangular groove 251. A limit block 253 is installed at the telescopic end of the elastic telescopic rod 252. The annular limit frame 24 has a limit groove 254 that corresponds one-to-one with the rectangular groove 251.

[0049] It should be noted that both the brake shaft 25 and the linkage shaft 22 are wound with traction ropes 26. In specific operation, when the casting cylinder 1 tilts forward toward the liquid outlet 11, the casting cylinder 1 will drive the rotating shaft 13 to rotate counterclockwise. The rotational motion of the rotating shaft 13 is transmitted to the linkage shaft 22 on the side near the liquid outlet 11 through the meshing transmission pair of gear 1 21 and gear 2 23, which drives the linkage shaft 22 to rotate synchronously and uniformly wind up the traction rope 26 on its shaft.

[0050] Under the winding tension of the traction rope 26, the brake shaft 25 connected to the other end of the traction rope 26 rotates synchronously. As the rotation speed of the brake shaft 25 gradually increases, the centrifugal force on the limiting block 253 mounted on its shaft continues to increase. When the centrifugal force on the limiting block 253 is greater than the pre-tightening force threshold of the elastic telescopic rod 252, the elastic telescopic rod 252 undergoes axial elongation deformation, pushing the limiting block 253 to move outward and tightly abut against the inner wall of the annular limiting frame 24. The limiting block 253 slides circumferentially along the inner wall of the annular limiting frame 24 as the brake shaft 25 rotates.

[0051] When the sliding trajectory of the limiting block 253 is precisely aligned with the preset limiting groove 254 on the inner wall of the annular limiting frame 24, the reset force of the elastic telescopic rod 252 will drive the limiting block 253 to quickly embed into the limiting groove 254. Through the snapping action between the limiting block 253 and the limiting groove 254, the brake shaft 25 is temporarily fixed and limited to the preset position of the annular limiting frame 24, and its rotational movement is immediately terminated.

[0052] Since the brake shaft 25 is linked to the linkage shaft 22 and the rotating shaft 13 through the traction rope 26 and the gear transmission pair, the locking state of the brake shaft 25 will be transmitted in reverse to the rotating shaft 13, causing the rotating shaft 13 to stop rotating, thereby achieving precise limiting of the forward tilt angle of the casting cylinder 1 and preventing it from continuing to tilt forward.

[0053] When the casting cylinder 1 tilts backward, the casting cylinder 1 will drive the rotating shaft 13 to rotate counterclockwise. The rotational motion of the rotating shaft 13 is transmitted to the linkage shaft 22 on the side away from the liquid outlet 11 through the meshing transmission pair of gear 1 21 and gear 2 23, which drives the linkage shaft 22 to rotate synchronously and to uniformly wind up the traction rope 26 on its shaft body.

[0054] Under the winding tension of the traction rope 26, the brake shaft 25 connected to the other end of the traction rope 26 rotates synchronously. As the rotation speed of the brake shaft 25 gradually increases, the centrifugal force on the limiting block 253 mounted on its shaft continues to increase. When the centrifugal force on the limiting block 253 is greater than the pre-tightening force threshold of the elastic telescopic rod 252, the elastic telescopic rod 252 undergoes axial elongation deformation, pushing the limiting block 253 to move outward and tightly abut against the inner wall of the annular limiting frame 24. The limiting block 253 slides circumferentially along the inner wall of the annular limiting frame 24 as the brake shaft 25 rotates.

[0055] When the sliding trajectory of the limiting block 253 is precisely aligned with the pre-set limiting groove 254 on the inner wall of the annular limiting frame 24, the reset force of the elastic telescopic rod 252 will drive the limiting block 253 to quickly embed into the limiting groove 254. Through the snapping action between the limiting block 253 and the limiting groove 254, the brake shaft 25 is temporarily fixed and limited to the preset position of the annular limiting frame 24, and its rotational movement is immediately terminated. Since the brake shaft 25 and the linkage shaft 22 and the rotating shaft 13 are linked and constrained by the traction rope 26 and the gear transmission pair, the locking state of the brake shaft 25 will be transmitted in reverse to the rotating shaft 13, causing the rotating shaft 13 to stop rotating, thereby achieving precise limiting of the backward tilting angle of the casting cylinder 1 and preventing it from continuing to tilt backward.

[0056] It should be noted that the circumferential distance between the rectangular groove 251 and the adjacent limiting groove 254 is designed to be minimal. This structural design ensures that after the rotating shaft 13 rotates slightly, the winding action of the traction rope 26 of the linkage shaft 22 and the centrifugal limiting of the brake shaft 25 respond quickly and cooperate to lock the brake shaft 25 on the annular limiting frame 24 through the limiting block 253 in a very short time, effectively avoiding the safety hazard of molten iron spillage caused by excessive forward (backward) tilting of the casting cylinder 1.

[0057] Among them, the diameter of gear 1 21 is much larger than that of gear 2 23. The two form a gear transmission pair with a large transmission ratio. When the rotating shaft 13 drives gear 1 21 to rotate at a specific angle, gear 2 23 meshing with it will be driven to rotate at high speed, thereby driving the linkage shaft 22 fixedly connected to gear 2 23 to complete multiple rotations.

[0058] The high-speed multi-turn rotation of the linkage shaft 22 can wind the traction rope 26 wound around it. Through the linear winding motion of the traction rope 26, the brake shaft 25 is driven to complete multiple accelerated rotations synchronously. During this process, the rotational angular velocity of the brake shaft 25 continues to increase with the increase of the number of rotations, and its own rotational inertia also increases significantly. When the rotational speed of the brake shaft 25 reaches a certain speed, its accumulated inertial kinetic energy can be converted into sufficient centrifugal driving force, providing stable and strong power support for the high-speed throwing action of the subsequent limit block 253.

[0059] Therefore, the diameter of gear 21 is much larger than that of gear 23, which can mechanically amplify the rotation angle of the rotating shaft 13 and be reflected in the multiple rotations of the brake shaft 25.

[0060] The inner wall of the cavity 15 is equipped with a telescopic spring rod 151 corresponding to the linkage shaft 22, and the telescopic spring rod 151 is located between the brake shaft 25 and the linkage shaft 22 on the corresponding side. The telescopic end of the telescopic spring rod 151 is equipped with a fixed pulley 152, and the traction rope 26 passes around the corresponding fixed pulley 152.

[0061] It should be noted that, in the non-working state, the telescopic spring rod 151 always maintains a stable tension state, and its elastic tension is applied to the traction rope 26 on the non-working side through the steering transmission effect of the fixed pulley 152.

[0062] When the corresponding brake shaft 25 is in working condition, the linkage shaft 22 rotates synchronously, causing the working side traction rope 26 to complete the winding and coiling action. At the same time, the non-working side traction rope 26 enters the release state simultaneously. During this process, the telescopic spring rod 151 in the tensioned state, combined with the reversing transmission of the fixed pulley 152, can continuously provide continuous tension to the non-working side traction rope 26, thereby ensuring that the traction rope 26 on this side always maintains a taut and straight state during the release process. This avoids problems such as tangling, knotting, and scattering caused by the non-working side traction rope 26 slack and sagging, thus ensuring the stability and reliability of the device operation.

[0063] The annular limiting frame 24 is equipped with a disc spring 241 for resetting the brake shaft 25. Multiple obstruction blocks 242 are evenly arranged along the length of the limiting block 253, and the obstruction blocks 242 are mounted on the corresponding limiting block 253 by spring hinges. Multiple blocking blocks 243 that cooperate with the limiting block 253 are installed inside the limiting groove 254, and the blocking blocks 243 are provided with guide slopes that cooperate with the corresponding limiting block 253. Multiple fixing blocks 244 for limiting the obstruction blocks 242 are also installed on the limiting block 253.

[0064] The rectangular groove 251 also has a clearance groove for the obstruction block 242 to make way, ensuring that the obstruction block 242 can move smoothly inside the rectangular groove 251 and avoid collision between the obstruction block 242 and the rectangular groove 251 during the movement. In specific operation, when the limiting block 253 enters the limiting groove 254, the obstruction block 242 contacts the guide slope with the cooperation of the spring hinge. At this time, due to the limitation of the guide slope, the obstruction block 242 rotates around the spring hinge and continues to move along the guide slope until the obstruction block 242 passes the corresponding blocking block 243. At this time, the obstruction block 242 is located on the side of the corresponding blocking block 243 away from the guide slope.

[0065] When the brake shaft 25 and the annular limit frame 24 are relatively fixed, the limit block 253 is located inside the limit groove 254. At this time, due to the reset stretching action of the elastic telescopic rod 252, the limit block 253 drives the blocking block 242 to tend to move towards one side of the rectangular groove. When the limit block 253 contacts the blocking block 243, the spring hinge fails due to the limiting action of the fixed block 244. Thus, the limit block 253 can be locked inside the limit groove 254 through the cooperation of the fixed block 244 and the blocking block 243, so as to avoid the possibility of the limit block 253 slipping out of the limit groove 254 when the brake shaft 25 and the annular limit frame 24 are fixed together, and to ensure the stability of the brake shaft 25 and the annular limit frame 24 being fixed together.

[0066] When it is necessary to release the limit, the casting cylinder 1 is limited by an external stabilizing device (such as a robotic gripper, not shown in the figure). Then, the rotating shaft 13 is slightly rotated, and the rotating shaft 13 releases the traction rope 26. At this time, the coil spring 241 drives the brake shaft 25 to rotate a certain angle, so that the obstruction block 242 and the blocking block 243 are misaligned. The limiting block 253 is reset under the pull of the elastic telescopic rod 252. The annular limiting frame 24 is released from the limit, and the casting cylinder 1 is slowly reset by the existing external stabilizing device such as the robotic gripper. Then, the device is inspected and repaired.

[0067] Finally, the present invention also provides a method for tilting a molten iron ladle, comprising the following steps: S1: During operation, the drive shaft provides tilting power, and the rotational motion is transmitted to the rotating shaft 13 through gear meshing. The rotating shaft 13 is fixed on the connecting protrusion 12 of the casting cylinder 1 and passes through the cavity 15 of the vertical section of the hoisting frame 14. At the same time, the drive shaft cooperates with the ratchet and pawl, allowing only unidirectional rotation in a preset direction to avoid the risk of reverse rotation caused by the reverse force of the load. Then, the rotating shaft 13 drives the casting cylinder 1 to rotate around its own axis, initiating the tilting action of the molten iron ladle.

[0068] S2: When the casting cylinder 1 tilts forward, it drives the rotating shaft 13 to rotate counterclockwise. The power is transmitted to the linkage shaft 22 near the liquid outlet 11 through the meshing of gear 1 21 and gear 2 23. The linkage shaft 22 rotates and winds up the traction rope 26, which drives the brake shaft 25 to rotate synchronously. The limiting block 253 is thrown out by centrifugal force and abuts against the inner wall of the annular limiting frame 24. When the limiting block 253 is aligned with the limiting groove 254, the elastic telescopic rod 252 pushes it to embed into the groove. The brake shaft 25 locks and the linkage rotating shaft 13 stops rotating, completing the forward tilt angle limit.

[0069] S3: When the casting cylinder 1 tilts backward, the rotating shaft 13 still rotates counterclockwise. The power is transmitted to the linkage shaft 22 on the side away from the liquid outlet 11 through gear transmission. The linkage shaft 22 winds up the traction rope 26 to drive the brake shaft 25 to accelerate. The limiting block 253 abuts against the annular limiting frame 24 under the action of centrifugal force. When the limiting block 253 slides to be aligned with the limiting groove 254, the elastic telescopic rod 252 pushes it into the limiting groove 254. The brake shaft 25 locks and restricts the rotation of the rotating shaft 13 in the opposite direction, so as to achieve precise control of the backward tilting angle and prevent excessive backward tilting.

[0070] S4: After the limiting block 253 is embedded in the limiting groove 254, the obstruction block 242 is guided by the guide slope to pass over the blocking block 243. The fixing block 244 restricts the obstruction block 242 to reset, preventing the limiting block 253 from slipping. The large transmission ratio structure of gear 1 21 and gear 2 23 amplifies the angle of the rotating shaft 13 and accelerates the brake shaft 25, providing power to the limiting block 253. The telescopic spring rod 151 keeps the traction rope 26 taut through the fixed pulley 152. The disc spring 241 assists the brake shaft 25 to reset, ensuring the stability and reliability of the tilting and locking process.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tilting pouring device for molten iron ladles, characterized in that: It includes a casting cylinder (1) with the opening facing upward, the casting cylinder (1) has a liquid outlet (11) and a connecting protrusion (12), and a rotating shaft (13) is fixedly installed on the connecting protrusion (12); The casting cylinder (1) is provided with a hoisting frame (14) that is U-shaped and has an opening facing downward. The two vertical sections of the hoisting frame (14) correspond one-to-one with the rotating shaft (13). The rotating shaft (13) is rotatably mounted on the vertical section of the corresponding side hoisting frame (14) through bearings. The vertical section of the hoisting frame (14) near the rotating shaft (13) is a rectangular structure, and a cavity (15) is provided inside the rectangular structure. The end of the rotating shaft (13) away from the connecting protrusion (12) passes through the cavity (15). A braking mechanism (2) is provided in one cavity (15), and a tilting mechanism (3) is provided in the other cavity (15); The tilting mechanism (3) is engaged with the existing drive shaft. The drive shaft drives the rotating shaft (13) to rotate through gear meshing. The drive shaft is equipped with a ratchet and a pawl to achieve unidirectional rotation.

2. The iron ladle tilting and pouring device according to claim 1, characterized in that: The braking mechanism (2) includes a gear (21) located in the cavity (15) of the rotating shaft (13); The inner wall of the cavity (15) is rotatably mounted with a linkage shaft (22) via a bearing, and a gear two (23) that meshes with the corresponding gear one (21) is mounted on the linkage shaft (22); An annular limiting frame (24) is installed at the top of the cavity (15) via a connecting protrusion (12). A brake shaft (25) is rotatably installed inside the cavity (15) via a bearing. The brake shaft (25) passes through the annular limiting frame (24) and can rotate freely inside it. Both the brake shaft (25) and the linkage shaft (22) are wound with traction ropes (26), which connect the two.

3. The iron ladle tilting and pouring device according to claim 2, characterized in that: The brake shaft (25) is located inside the annular limit frame (24) and a plurality of rectangular grooves (251) are evenly provided along the circumferential direction. An elastic telescopic rod (252) is installed in the rectangular groove (251), and a limit block (253) is installed at the telescopic end of the elastic telescopic rod (252). The annular limiting frame (24) has a limiting groove (254) inside that corresponds one-to-one with the rectangular groove (251).

4. The iron ladle tilting and pouring device according to claim 3, characterized in that: The diameter of gear one (21) is much larger than the diameter of gear two (23), and the two form a large transmission ratio gear transmission pair.

5. The iron ladle tilting and pouring device according to claim 2, characterized in that: The inner wall of the cavity (15) is equipped with a telescopic spring rod (151), which is located between the brake shaft (25) and the linkage shaft (22). A fixed pulley (152) is installed at its telescopic end, and the traction rope (26) passes around the fixed pulley (152).

6. The iron ladle tilting and pouring device according to claim 5, characterized in that: In the non-working state, the telescopic spring rod (151) always remains in a stretched state, and applies tension to the traction rope (26) through the fixed pulley (152).

7. The iron ladle tilting and pouring device according to claim 3, characterized in that: The annular limiting frame (24) is equipped with a disc spring (241) for resetting the brake shaft (25); Multiple obstruction blocks (242) are mounted on the limiting block (253) via spring hinges. A blocking block (243) that cooperates with the obstruction block (242) is installed in the limiting groove (254). The blocking block (243) is provided with a guide slope that cooperates with the limiting block (253). The limiting block (253) is also equipped with a fixing block (244) for limiting the obstruction block (242).

8. The iron ladle tilting and pouring device according to claim 7, characterized in that: The rectangular groove (251) has a clearance groove inside for avoiding the obstruction block (242). The clearance groove is used to prevent the obstruction block (242) from colliding with the rectangular groove (251) when it moves.

9. The iron ladle tilting and pouring device according to claim 3, characterized in that: The circumferential spacing between the rectangular groove (251) and the adjacent limiting groove (254) is designed to be minimal in order to achieve a rapid locking response of the brake shaft (25).

10. A method for tilting a molten iron ladle, using the molten iron ladle tilting and pouring device according to any one of claims 1-9, characterized in that: Includes the following steps: S1: The drive shaft provides power and transmits the rotational motion to the rotating shaft (13) through gear meshing. The ratchet and pawl restrict the drive shaft to rotate in one direction. The rotating shaft (13) drives the casting cylinder (1) to start tilting around its own axis. S2: When the casting cylinder (1) tilts forward, the rotating shaft (13) drives the linkage shaft (22) near the liquid outlet (11) to rotate and wind up the traction rope (26). The brake shaft (25) accelerates the rotation, causing the limiting block (253) to be subjected to centrifugal force and abut against the annular limiting frame (24). After the limiting block (253) is aligned with the limiting groove (254), it is embedded to achieve forward tilting limit. S3: When the casting cylinder (1) tilts backward, the rotating shaft (13) drives the linkage shaft (22) on the side away from the liquid outlet (11) to drive the brake shaft (25) to accelerate, and the limiting block (253) is embedded in the limiting groove (254) to achieve backward tilting limit; S4: After the limit block (253) is inserted, the obstruction block (242) and the blocking block (243) lock together, the transmission pair formed by gear one (21) and gear two (23) amplifies the rotation angle, the telescopic spring rod (151) keeps the traction rope (26) taut through the fixed pulley (152), and the disc spring (241) assists the brake shaft (25) to reset.

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