A molten steel ladle anti-overturning device

Abstract

The utility model discloses a molten steel tank anti -tipping device belongs to the technical field of steel -making equipment, including frame, the frame top is slidable respectively with first crane and second crane, and the first crane is connected with molten steel tank through first connecting component, and the second crane is connected with molten steel tank through second connecting component, and one side of the frame upper portion is provided with the limit crossbeam, can control improper angle control of overturning stroke, reduce molten steel tank and appear excessive overturning due to inertia or hoisting point deviation, lead to the generation of the phenomenon that tank body is unbalanced even overturns in the highest position, make the rotation center of molten steel tank and tank body gravity form reasonable bias when overturning, and molten steel and steel slag can be smoothly drained, improve pouring efficiency and tank body life.

Description

Technical Field

[0001] This utility model belongs to the technical field of steelmaking equipment, specifically a device to prevent molten steel ladle from tipping over. Background Technology

[0002] The molten steel ladle is one of the most crucial pieces of equipment in the steelmaking process, primarily used to hold the high-temperature molten steel produced in the steelmaking furnace. A typical molten steel ladle consists of a body, trunnions, a tilting belt, and a sliding gate. The body holds the molten steel, the trunnions are used for lifting and tilting, the tilting belt is installed at the bottom of the ladle for pouring the molten steel, and the sliding gate controls the flow rate of the molten steel. In actual production, once the temperature and composition of the molten steel meet the pouring requirements, operators use a crane to lift the ladle containing the molten steel to the pouring position, open the sliding gate at the bottom of the ladle, and allow the molten steel to flow into the tundish or mold to complete the pouring operation. After pouring, the sliding gate is closed, and the ladle is allowed to empty completely before returning to its original position for cooling, completing one pouring cycle.

[0003] In the prior art, utility model CN204251201U discloses a steel ladle anti-detachment device, including a connecting shaft and a trunnion. One end of the connecting shaft is fixed to the steel ladle, and the other end is fixedly connected to the trunnion. A stop is fixed between the connecting shaft and the trunnion. The stop is a triangular structure with a through hole, and the through hole matches the outer diameter of the connecting shaft. The advantages of this utility model are: by setting the stop, the hook is kept close to the connecting shaft while ensuring that the crane hook can smoothly enter the steel ladle anti-detachment device connecting shaft; the structure of the stop facilitates the operator's external observation of whether the hook is properly engaged, and can effectively shorten the time for the crane to lift the hook and sit on the ladle, ensure the uniformity of the crane's steel rope force, improve the safety and stability of the lifting process, thereby reducing the accident rate and improving the production efficiency of the steel plant.

[0004] However, while this patent can prevent detachment accidents during hoisting, it does not effectively limit the control of the tilting angle of the molten steel ladle when pouring molten steel and slag. In actual production, the molten steel ladle needs to be completely drained of molten steel and slag during the pouring operation to improve the casting quality and the service life of the ladle. However, if the tilting stroke or angle is not properly controlled, the molten steel ladle may overturn due to inertia or displacement of the lifting point, causing the ladle to become unbalanced at its highest position or even overturn, posing a significant safety hazard. Utility Model Content

[0005] The purpose of this utility model is to provide a steel ladle anti-tipping device to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] A steel ladle anti-tipping device is provided, comprising a frame, wherein a first crane and a second crane are slidably connected to the upper part of the frame, the first crane is connected to the steel ladle through a first connecting component, and the second crane is connected to the steel ladle through a second connecting component, and a limit beam is provided on one side of the upper part of the frame.

[0007] Furthermore, the first connecting assembly includes a first wire rope, which is connected to a first crane. A first hook is connected to the first wire rope, and a wire rope strip is fixedly connected to the first hook. A lifting lug seat at the bottom of the molten steel ladle is fixedly connected to the side of the wire rope strip away from the first wire rope. The lifting lug seat at the bottom of the molten steel ladle is located at the bottom of the molten steel ladle.

[0008] Furthermore, the second connecting assembly includes a second wire rope, to which a second crane is connected, and a second wire rope hook is connected to the end of the second wire rope away from the second crane, and a steel ladle hanging lug is fixedly connected to the second wire rope hook.

[0009] Furthermore, the lifting lugs at the bottom of the molten steel ladle are positioned on the center line of the bottom of the molten steel ladle.

[0010] Furthermore, the distance between the bottom lifting lug of the molten steel ladle and the bottom edge of the molten steel ladle is less than the bottom radius of the molten steel ladle.

[0011] Furthermore, a first lifting hole is provided on the lifting lug at the bottom of the molten steel tank.

[0012] Furthermore, the steel ladle is provided with first supporting stiffeners on both sides of the bottom lifting lug seat.

[0013] Furthermore, a second supporting rib plate is also provided on both sides of the steel ladle hanging lug seat.

[0014] Furthermore, a second lifting hole is provided on the steel ladle's hanging lug seat.

[0015] Furthermore, the vertical distance H between the limiting beam and the top surface of the molten steel tank is 1-1.5m.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: When the molten steel ladle tilts to its maximum safe angle, the top of the ladle approaches the lower edge of the limiting beam, forming a physical limit and preventing further upward tilting. At this point, the molten steel and slag can be smoothly poured out. After the tilting is complete, the first crane moves in the opposite direction, and the molten steel ladle returns to its original position under gravity. Throughout the process, the second crane maintains a constant tension, providing stable support for the molten steel ladle and preventing lateral swaying and overturning. By setting a limiting beam on the frame, a physical limit is formed when the molten steel ladle tilts to its maximum safe angle, preventing excessive tilting or overturning accidents caused by inertia or lifting point offset during operation. The bottom lifting lugs are set on the center line of the molten steel ladle and close to the bottom edge, which can control the tilting stroke or angle, reducing the occurrence of excessive tilting of the molten steel ladle due to inertia or lifting point offset, which could lead to imbalance or even overturning of the ladle at its highest position. This ensures that the rotation center of the molten steel ladle and the center of gravity of the ladle are reasonably offset during tilting, allowing the molten steel and slag to be smoothly discharged, improving casting efficiency and ladle life. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of the hoisting structure of a steel ladle anti-tipping device; Figure 2 This utility model provides a schematic diagram of the tilted state of a molten steel ladle. Figure 3 A schematic diagram of the bottom structure of the molten steel tank provided by this utility model.

[0019] In the diagram: 1. First crane; 2. Second crane; 3. First connecting assembly; 31. First wire rope; 32. First hook; 33. Wire rope strip; 34. Bottom lifting lug of molten steel ladle; 341. First lifting hole; 4. Second connecting assembly; 41. Second wire rope; 42. Second wire rope hook; 43. Ladle hanging lug; 431. Second lifting hole; 5. Limiting beam; 6. First supporting stiffener; 7. Second supporting stiffener; 10. Frame; 100. Molten steel ladle. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-3 As shown in the present invention, a steel ladle anti-tipping device includes a frame 10, with a first crane 1 and a second crane 2 slidably connected to the upper part of the frame 10. The first crane 1 is connected to the steel ladle 100 through a first connecting component 3, and the second crane 2 is connected to the steel ladle 100 through a second connecting component 4. A limit beam 5 is provided on one side of the upper part of the frame 10. A steel ladle anti-tipping device includes a frame 10, which is a frame structure consisting of a base, columns, and an upper crossbeam. A slide rail is provided on the upper crossbeam along the transverse direction, and a first crane 1 and a second crane 2 are slidably connected to the slide rail. The first crane 1 and the second crane 2 are driven to slide along the slide rail by mechanical traction devices to adjust the distance between the two lifting points. The first crane 1 is connected to the molten steel ladle 100 via a first connecting assembly 3. The first connecting assembly 3 includes a first wire rope 31, a first hook 32, and a wire rope strap 33. The upper end of the first wire rope 31 is connected to the hoisting mechanism of the first crane 1, and the lower end is hooked to the wire rope strap 33 via the first hook 32. The lower end of the wire rope strap 33 is fixed to the lifting lug at the bottom of the molten steel ladle. The lifting lug at the bottom of the molten steel ladle is located on the center line of the bottom of the molten steel ladle 100. During the flipping operation, the first crane 1 moves along the slide rail toward the limiting beam 5 and drives the first connecting assembly 3 to rise, so that the molten steel ladle 100 forms a controllable rotation and tilt around the lifting point of the second crane 2. When the molten steel ladle 100 tilts to its maximum safe angle, the top of the ladle approaches the lower edge of the limiting beam 5, forming a physical limit to prevent further upward tilting. At this time, the molten steel and slag can be smoothly poured out. After the tilting is completed, the first crane 1 moves in the opposite direction, and the molten steel ladle 100 returns to its original position under gravity. Throughout the process, the second crane 2 maintains a constant tension, providing stable support for the molten steel ladle 100 and preventing lateral swaying and overturning. By setting the limiting beam 5 on the frame 10, a physical limit can be formed when the molten steel ladle 100 tilts to its maximum safe angle, preventing excessive tilting or overturning accidents caused by inertia or lifting point offset during operation. The bottom lifting lug 34 of the molten steel ladle is set on the center line of the molten steel ladle and close to the bottom edge, so that the rotation center of the molten steel ladle 100 and the center of gravity of the molten steel ladle 100 are reasonably offset during tilting, allowing the molten steel and slag to be smoothly discharged, improving casting efficiency and ladle life.

[0027] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the first connecting component 3 includes a first wire rope 31, the first wire rope 31 is connected to a first crane 1, a first hook 32 is connected to the first wire rope 31, a wire rope steel strip 33 is fixedly connected to the first hook 32, and a steel ladle bottom lifting lug 34 is fixedly connected to the side of the steel rope steel strip 33 away from the first wire rope 31. The steel ladle bottom lifting lug 34 is located at the bottom of the steel ladle 100. One end of the first wire rope 31 is connected to the winch of the first crane 1, and the other end is connected to the wire rope strip 33 via the first hook 32. When the first crane 1 starts lifting, the first wire rope 31 outputs tension through the winch mechanism. The tension is transmitted to the wire rope strip 33 via the first hook 32. The wire rope strip 33 is fixedly connected to the lifting lug 34 at the bottom of the molten steel tank, so that the lifting force can be directly applied to the structural reinforcement at the bottom of the molten steel tank 100.

[0028] Since the bottom of the molten steel ladle 100 is usually the area with the lowest center of gravity and the greatest force during tilting and transportation, arranging the lifting point at the lifting lug at the bottom of the molten steel ladle can make the lifting force basically coincide with the center of gravity, forming a vertical tensile main axis, thereby effectively preventing the molten steel ladle 100 from tilting forward or backward, tipping over or swinging during lifting.

[0029] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the second connecting component 4 includes a second wire rope 41, a second crane 2 is connected to the second wire rope 41, a second wire rope hook 42 is connected to the end of the second wire rope 41 away from the second crane 2, and a steel ladle hanging lug 43 is fixedly connected to the second wire rope hook 42.

[0030] The main function of the second connecting component 4 is to limit the upper posture and prevent overturning stability of the molten steel ladle 100 during hoisting, tilting, and return. This component forms a flexible connection system through the second wire rope 41, the second wire rope hook 42, and the molten steel ladle hanging lug 43. It works in conjunction with the first connecting component 3 to form a controlled two-point suspension structure when the molten steel ladle 100 is tilted. Specifically, one end of the second wire rope 41 is connected to the winch mechanism of the second crane 2, and the other end is fixedly connected to the molten steel ladle hanging lug 43 through the second wire rope hook 42. The steel ladle lug 43 is located in the upper part of the steel ladle 100 body or slightly above the center of gravity of the ladle, forming a force direction different from that of the steel ladle bottom lug 34. When the steel ladle 100 is tilted, the first crane 1 applies a lifting torque to the bottom of the ladle through the first connecting component 3, causing the steel ladle to rotate in a controlled manner around the axis of the steel ladle lug 43. Meanwhile, the second crane 2 and its second wire rope 41 maintain a certain tension during this process, constraining and pulling the upper part of the steel ladle 100 to prevent the steel ladle 100 from tilting forward, backward, or swaying laterally due to inertia.

[0031] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the bottom lifting lug 34 of the molten steel ladle is set on the center line of the bottom of the molten steel ladle 100; By aligning the lifting lugs 34 at the bottom centerline of the molten steel ladle, the resultant force line of the suspended load is substantially aligned with the center of gravity axis of the molten steel ladle 100, thus ensuring the symmetry and verticality of the lifting force. During lifting or tilting, the tension generated by the first connecting assembly 3 is vertically transmitted to the lifting lugs 34 at the bottom of the molten steel ladle via the wire rope 33, and then evenly diffused to the surrounding area through the bottom plate of the molten steel ladle 100, avoiding localized stress concentration.

[0032] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the distance between the bottom lifting lug 34 of the molten steel ladle and the bottom edge of the molten steel ladle 100 is less than the bottom radius of the molten steel ladle 100; During the hoisting of molten steel ladles, the lifting lugs 34 at the bottom of the ladle bear the main lifting force and overturning torque of the ladle. If the lifting lugs are positioned too close to the edge of the ladle, the moment arm will be too large during hoisting, and the center of gravity of the ladle will shift significantly, which may easily lead to tipping or the ladle swaying sideways. Conversely, if the lifting lugs are positioned too far inward, sufficient overturning torque will not be generated during hoisting, which is not conducive to tipping operations.

[0033] Therefore, by setting the bottom lifting lug 34 of the molten steel ladle at a distance from the bottom edge less than the radius of the ladle body, the lifting point can be close to the center line of the ladle body and have a reasonable torque arm, so that the molten steel ladle 100 will form a controlled overturning trend during hoisting and will not tilt excessively.

[0034] During the tilting operation, the first crane 1 applies a lifting force through the first connecting assembly 3, causing the molten steel ladle to rotate around the lifting lug 34 as a fulcrum. Simultaneously, the second crane 2 provides an upper restraining force through the second connecting assembly 4, ensuring a stable tilting trajectory and smooth return to center for the molten steel ladle 100. This eccentric arrangement of the lifting lug 34 at the bottom of the molten steel ladle balances stability and operational flexibility, effectively preventing excessive tilting or deviation in the return position of the molten steel ladle 100.

[0035] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, a first lifting hole 341 is provided on the lifting lug 34 at the bottom of the molten steel ladle. During the lifting process, the first connecting component 3 is connected to the wire rope 33 via the first hook 32. The other end of the wire rope 33 passes through or is fixed in the first lifting hole 341 on the lifting lug 34 at the bottom of the molten steel ladle. This lifting hole constitutes the core node for lifting force, and its geometric center coincides with the center of the lifting lug 34 at the bottom of the molten steel ladle, so that the line of action of the tension during lifting is basically aligned with the center axis of the ladle's weight, thereby ensuring symmetrical force and balanced lifting points.

[0036] In one embodiment, see Figure 1 , Figure 2 and Figure 3As shown, first supporting stiffeners 6 are also provided on both sides of the lifting lug 34 at the bottom of the molten steel ladle. These first supporting stiffeners 6 are mainly used to enhance the overall rigidity and tensile strength of the connection between the lifting lug 34 and the bottom of the molten steel ladle. When the crane lifts the molten steel ladle using the wire rope and steel belt 33, the lifting lug 34 at the bottom of the molten steel ladle will bear a large concentrated tensile and shear force. If the connection between the lifting lug 34 and the ladle body is relied solely on the lifting lug 34, stress concentration can easily occur, leading to weld fatigue or structural deformation. By adding first supporting stiffeners 6 on both sides of the lifting lug 34 at the bottom of the molten steel ladle, a triangular support structure can be formed, effectively dispersing the force at the lifting point and transferring the tensile force to a larger area of ​​the bottom wall and shell structure of the ladle. This improves the overall resistance to deformation, prevents the risk of tearing or local breakage of the lifting lugs during lifting, and thus improves lifting safety and structural stability.

[0037] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, the steel ladle lug 43 is also provided with second support ribs 7 on both sides. By adding second support ribs 7 on both sides of the lug, the force of the lug can be evenly transferred to the side wall of the ladle along the ribs, forming a reinforced triangular force-bearing structure.

[0038] In one embodiment, see Figure 1 , Figure 2 and Figure 3 As shown, a second lifting hole 431 is provided on the steel ladle hanging lug seat 43. The main function of the second lifting hole 431 on the steel ladle hanging lug seat 43 is to provide a reliable lifting connection point for the second connecting component 4, so as to ensure that the tension of the upper lifting point of the steel ladle 100 can be safely and stably transmitted to the steel ladle 100 hanging lug structure. The second lifting hole 431, in conjunction with the second wire rope hook 42, enables upper posture control and anti-tipping restraint of the molten steel ladle 100 during hoisting and tipping. The position of the lifting hole is coordinated with the ladle's lug seat 43 and the ladle's center of gravity axis, so that the hoisting force is distributed along the ladle's center of gravity, avoiding tilting, tipping, or swaying of the ladle due to uneven force on the upper lifting points.

[0039] The limiting beam 5 is set above the frame 10, and the vertical distance H from the top surface of the molten steel ladle 100 is 1 to 1.5 m. Its core function is to prevent the molten steel ladle from rising excessively or being accidentally hit during hoisting, flipping or returning to its original position, so as to ensure operational safety. During the tilting and hoisting of the molten steel ladle 100, the first crane 1 and the second crane 2 apply lifting force to the ladle through their respective connecting components. If the hoisting stroke is too long, the molten steel ladle 100 may approach or exceed the space limit above the frame 10, causing a collision with the structure above, thereby endangering equipment and personnel safety. By setting a limiting beam 5 and maintaining a distance H between it and the top surface of the molten steel ladle 100 of 1 to 1.5 m, a physical safety limit can be formed: when the molten steel ladle 100 is raised to near the predetermined height, the beam provides a clear obstruction and reference, preventing over-travel during hoisting, while ensuring a safe buffer space for hoisting operations.

[0040] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A steel ladle anti-tipping device, comprising a frame (10), characterized in that, The upper part of the frame (10) is slidably connected to a first crane (1) and a second crane (2). The first crane (1) is connected to a molten steel tank (100) through a first connecting component (3). The second crane (2) is connected to a molten steel tank (100) through a second connecting component (4). A limit beam (5) is provided on one side of the upper part of the frame (10).

2. The anti-tipping device for a molten steel ladle according to claim 1, characterized in that, The first connecting component (3) includes a first wire rope (31), the first wire rope (31) is connected to a first crane (1), the first wire rope (31) is connected to a first hook (32), the first hook (32) is fixedly connected to a wire rope strip (33), and the side of the wire rope strip (33) away from the first wire rope (31) is fixedly connected to a steel tank bottom lifting lug (34), and the steel tank bottom lifting lug (34) is located at the bottom of the steel tank (100).

3. The anti-tipping device for a molten steel ladle according to claim 1, characterized in that, The second connecting assembly (4) includes a second wire rope (41), a second crane (2) is connected to the second wire rope (41), a second wire rope hook (42) is connected to the end of the second wire rope (41) away from the second crane (2), and a steel ladle hanging ear seat (43) is fixedly connected to the second wire rope hook (42).

4. A steel ladle anti-tipping device according to claim 2, characterized in that, The bottom lifting lug (34) of the molten steel ladle is set on the center line of the bottom of the molten steel ladle (100).

5. A steel ladle anti-tipping device according to claim 2, characterized in that, The distance between the bottom lifting lug (34) of the molten steel ladle and the bottom edge of the molten steel ladle (100) is less than the bottom radius of the molten steel ladle (100).

6. A steel ladle anti-tipping device according to claim 2, characterized in that, The steel ladle has a first lifting hole (341) on the bottom lifting lug (34).

7. A steel ladle anti-tipping device according to claim 2, characterized in that, The bottom lifting lugs (34) of the molten steel ladle are also provided with first supporting stiffeners (6) on both sides.

8. A steel ladle anti-tipping device according to claim 3, characterized in that, The steel ladle lugs (43) are also provided with second support ribs (7) on both sides.

9. A steel ladle anti-tipping device according to claim 3, characterized in that, The steel ladle has a second lifting hole (431) on the lug seat (43).

10. A steel ladle anti-tipping device according to claim 1, characterized in that, The vertical distance H between the limiting beam (5) and the top surface of the steel tank (100) is 1-1.5m.

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