A device for retrieving electrodes from a molten steel ladle
By designing a folding structure and the telescopic movement of the clamping jaws, the problem of inconvenient electrode retrieval in the existing technology has been solved, enabling rapid and reliable electrode retrieval, improving the quality of molten steel and the service life of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
- Filing Date
- 2026-04-22
- Publication Date
- 2026-06-02
AI Technical Summary
Existing technologies cannot quickly and efficiently retrieve broken molten steel electrodes, resulting in excessive carbon content in the molten steel, which affects the quality of finished steel. Furthermore, traditional methods suffer from problems such as short service life, high cost, or cumbersome operation.
A steel ladle electrode retrieval device with a folding structure was designed. By setting hinge points and locking rods at both ends of the folding structure, the electrode can be quickly clamped and retrieved by the extension and retraction of the clamping jaws. The clamping jaws move closer to each other or further apart during the extension and retraction process to ensure stable clamping of the electrode.
This enables rapid and reliable electrode retrieval, reduces the risk of steel quality degradation, extends the service life of the equipment, and lowers operating costs.
Smart Images
Figure CN122126747A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of metallurgical equipment technology, and in particular to a device for retrieving electrodes from molten steel ladles. Background Technology
[0002] In the electric heating process of molten steel production in the metallurgical industry, heating electrodes inserted into the molten steel ladle are prone to breakage due to improper operation, equipment impact, and high-temperature corrosion. The broken electrodes fall directly into the molten steel. If not retrieved quickly, the electrodes will melt rapidly, leading to excessive carbon content and altered composition in the molten steel, severely deteriorating its quality and affecting the quality of the finished steel, resulting in production losses. Currently, the industry commonly uses two retrieval methods, both of which have significant drawbacks. Traditional electrode retrieval clamps require the jaws to directly contact the high-temperature molten steel during operation, making them highly susceptible to sticking, burning, and deformation. They are typically used only once and are scrapped, resulting in a very short service life and high operating costs. Another method involves using a crane to transport the molten steel ladle to the desulfurization and slag removal station, where the electrodes are then pulled out after slag removal. This method requires long-distance transport and multiple waiting processes, is time-consuming, and the electrodes remain immersed in the molten steel for extended periods, posing a high risk of melting and making it difficult to guarantee stable molten steel quality. Neither of these existing technologies can achieve rapid and efficient retrieval of broken electrodes, and both easily lead to a decline in molten steel quality and equipment damage.
[0003] In conclusion, developing a simple, quick, and reusable retrieval device is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0004] The purpose of this invention is to provide a steel ladle electrode retrieval device, which solves the technical problems of electrode breakage and melting in molten steel due to improper operation during electric heating metallurgy, resulting in high carbon content in the molten steel. Currently, when retrieving electrodes, the lifting clamps are prone to steel sticking to the end of the clamps and becoming unusable, or the operation process is cumbersome and cannot remove the electrodes in time, leading to electrode melting.
[0005] To achieve the above objectives, the present invention provides a steel ladle electrode retrieval device, comprising:
[0006] The folding structure has a first hinge point and a second hinge point at each end along its extension direction. A locking rod is rotatably provided at the first hinge point. By rotating the locking rod, the end of the locking rod away from the first hinge point engages with the second hinge point, locking the folding structure in its retracted state. Clamping jaws are connected to both sides of the second hinge point. When the folding structure retracts, each clamping jaw swings around the second hinge point in a direction away from each other. When the folding structure extends, each clamping jaw swings around the second hinge point in a direction closer to each other, allowing each clamping jaw to grip the electrode.
[0007] Preferably, the folding structure includes four sets of parallel folding elements, each folding element including four connecting rods, and a first hinge rod, a second hinge rod, a third hinge rod, and a fourth hinge rod respectively passing through the vertex of each folding element. The first hinge rod and the fourth hinge rod are located at the first hinge point and the second hinge point respectively. The locking rods all rotate around the first hinge rod, and the folding elements are arranged in pairs at both ends of the first hinge rod.
[0008] Preferably, a connecting ring is fixed on the side wall of the locking rod, and a limiting groove is provided on the side wall of the first hinge rod. The connecting ring is engaged with the limiting groove, and the locking rod is rotatably connected to the first hinge rod through the connecting ring.
[0009] Preferably, one end of the locking rod is vertically connected to a stop, which is used to engage the fourth hinge rod.
[0010] Preferably, the end of the locking lever away from the stop block is provided with a pull ring, and the pull ring is connected to a traction rope, which is used to drive the locking lever to swing.
[0011] Preferably, a hanging ring is provided at the midpoint of the side wall of the first hinge rod, and the hanging ring is used to connect the hanging device.
[0012] Preferably, each link hinged to the fourth hinge rod is connected to a clamping jaw, and the ends of the link and the clamping jaw are tangent.
[0013] Preferably, each clamp jaw is detachably fitted with a sleeve around its outer periphery, the clamp jaw and the sleeve have the same curvature, the inner diameter of the sleeve is larger than the diameter of the clamp jaw, and the sleeve is located on the outer periphery of the clamp jaw.
[0014] Preferably, the curvature of both the sleeve and the clamping nozzle is less than 180°.
[0015] Preferably, the thickness of the stop block gradually decreases in the direction away from the locking rod, so that the tapered end of the stop block is sharp.
[0016] Compared to the aforementioned background technology, the steel ladle electrode retrieval device provided by the present invention includes: a telescopic folding structure, with a first hinge point and a second hinge point respectively provided at both ends of the folding structure along its telescopic direction; a locking rod rotatably connected at the first hinge point; rotating the locking rod engages the end of the locking rod with the second hinge point, locking the distance between the two ends of the folding structure along the telescopic direction, thus locking the folding structure into a compressed state; clamping jaws are fixedly connected to both sides of the folding structure at the second hinge point; the clamping jaws can swing with the telescopic movement of the folding structure; during the compression of the folding structure, each clamping jaw swings in a direction away from each other; during the extension of the folding structure, each clamping jaw swings in a direction closer to each other. During the electrode retrieval operation, the compression and folding structure causes the first and second hinge points to move closer to each other, while the grippers swing away from each other. Then, the locking lever is rotated to engage the end of the locking lever with the second hinge point, keeping the grippers open. The grippers are then moved to align with the electrode, positioning the electrode between the grippers. The locking lever is then swung to release the lock between the locking lever and the second hinge point. The folding structure is pulled upwards, causing it to extend under the influence of the grippers' weight. The grippers swing closer to each other, clamping and fixing the electrode. The folding structure is then lifted to complete the electrode retrieval. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0018] Figure 1 This is a side view of the steel ladle electrode retrieval device provided in an embodiment of the present invention;
[0019] Figure 2 This is a front view of the steel ladle electrode retrieval device provided in an embodiment of the present invention;
[0020] Figure 3 This is a structural diagram of the locking rod provided in an embodiment of the present invention;
[0021] Figure 4 This is a structural diagram of the first working state of the steel ladle electrode retrieval device provided in an embodiment of the present invention;
[0022] Figure 5 This is a structural diagram of the second working state of the steel ladle electrode retrieval device provided in an embodiment of the present invention;
[0023] Figure 6This is a structural diagram of the third working state of the steel ladle electrode retrieval device provided in an embodiment of the present invention.
[0024] Among them, 1-clamping jaw; 21-connecting rod; 22-first hinge rod; 23-second hinge rod; 24-third hinge rod; 25-fourth hinge rod; 31-locking rod; 32-connecting ring; 33-stop block; 34-pull ring; 35-traction rope; 4-hanging ring; 5-electrode; 6-tube sleeve. Detailed Implementation
[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] This invention provides a device for retrieving electrode 5 from a molten steel ladle. Please refer to the attached instruction manual. Figures 1 to 2 This application includes a retractable folding structure. A first hinge point and a second hinge point are respectively provided at both ends of the folding structure along its own retraction direction. Preferably, a locking rod 31 is connected to the first hinge point. The locking rod 31 can rotate around the first hinge point. In addition, the locking rod 31 can engage with the second hinge point to compress the folding structure, so that the distance between the first hinge point and the second hinge point is less than or equal to the length of the locking rod 31. Then, the locking rod 31 is rotated so that the end of the locking rod 31 engages with the second hinge point, locking the distance between the first hinge point and the second hinge point, and the folding structure is locked in a compressed state. Furthermore, clamping mouths 1 are fixedly connected to both sides of the second hinge point of the folding structure. The clamping mouths 1 can swing with the extension and retraction of the folding structure, and the rotation axis of each clamping mouth 1 is the second hinge point. During the compression of the folding structure, each clamping mouth 1 swings in a direction away from each other to open the opening for accommodating the electrode 5. During the extension of the folding structure, each clamping mouth 1 swings in a direction closer to each other to clamp the electrode 5.
[0028] In one embodiment of this application, the operator compresses the folding structure, causing the first hinge point and the second hinge point to move closer to each other, and the clamping jaws 1 to swing away from each other, so that the opening size of each clamping jaw 1 is larger than the diameter of the electrode 5. Then, the locking rod 31 is rotated to engage the end of the locking rod 31 with the second hinge point, locking the open state of each clamping jaw 1. The clamping jaws 1 are moved so that the opening of the clamping jaw 1 corresponds to the electrode 5, so that the electrode 5 is located between each clamping jaw 1. Then, the locking rod 31 is swung to release the locking rod 31 from the second hinge point, and the folding structure is pulled upward. The folding structure is stretched due to the gravity of the clamping jaws 1, and the clamping jaws 1 swing towards the side closer to each other. Each clamping jaw 1 clamps and fixes the electrode 5. Then, the folding structure is lifted, and the gravity of the electrode 5 acts on the folding structure through the clamping jaws 1, further stretching the folding structure. The clamping force of each clamping jaw 1 on the electrode 5 is further increased, ensuring that the electrode 5 can be stably retrieved.
[0029] Please continue to refer to the instruction manual appendix. Figure 2 The folding structure includes four sets of folding elements arranged in parallel. Each set of folding elements includes four connecting rods 21. The connecting rods 21 of each folding element overlap end to end, making the folding element rhomboid in shape. A first hinge rod 22, a second hinge rod 23, a third hinge rod 24, and a fourth hinge rod 25 are respectively installed at the apex of each folding element. It should be noted that the first hinge rod 22 and the fourth hinge rod 25 are located at the first hinge point and the second hinge point, respectively, and are located diagonally opposite each other in the folding element. Preferably, the locking rod 31 rotates around the first hinge rod 22, and two sets of folding elements are provided at both ends of the first hinge rod 22, the second hinge rod 23, the third hinge rod 24, and the fourth hinge rod 25, thereby improving the load strength of the folding structure and preventing deformation of the folding structure due to excessive weight of the electrode 5, which would affect subsequent cyclic use.
[0030] Preferably, the two connecting rods hinged at the fourth hinge rod 25 are designated as the first connecting rod 21 and the second connecting rod 21. The ends of the first connecting rod 21 and the second connecting rod 21 overlap each other and are rotatably connected by the fourth hinge rod 25. The ends of the first connecting rod 21 and the second connecting rod 21 that connect to the fourth hinge rod 25 extend away from the second hinge rod 23 and the third hinge rod 24, respectively, so that the first connecting rod 21 and the second connecting rod 21 have additional connecting sections at the fourth hinge rod 25. The connecting sections are used to fix the clamping mouth 1. The clamping mouth 1 is specifically an arc rod. Each connecting section is connected to each clamping mouth 1. When the ends of the folding structure are tangent, the distance between the first hinge point and the second hinge point decreases during compression and folding, the angle between the first link 21 and the second link 21 increases, the angle between each clamping mouth 1 increases, and the end of each clamping mouth 1 facing away from the second hinge point opens to ensure that the electrode 5 can be accommodated between each clamping mouth 1. When the folding structure is stretched, the distance between the first hinge point and the second hinge point increases, the angle between the first link 21 and the second link 21 decreases, and the angle between each clamping mouth 1 connected thereto decreases, so that each clamping mouth 1 clamps the electrode 5 and completes the gripping operation of the electrode 5.
[0031] Preferably, the arc corresponding to the sleeve 6 and the clamping nozzle 1 is less than 180°, so as to avoid the ends of each clamping nozzle 1 that are away from the second hinge rod 23 abutting each other during the clamping process of the electrode 5, which would result in the inability to clamp the electrode 5.
[0032] Furthermore, a hanging ring 4 is provided at the midpoint of the side wall of the first hinge rod 22. The hanging ring 4 is used to connect the hanging device. The operator connects the present application to the hanging device through the hanging ring 4 and moves the clamp mouth 1 through the hanging device so that the clamp mouth 1 corresponds to the electrode 5.
[0033] Please refer to the instruction manual appendix. Figure 3 A connecting ring 32 is fixed on the side wall of the locking rod 31. Correspondingly, a limiting groove is provided on the side wall of the first hinge rod 22. The connecting ring 32 is fitted into the limiting groove. The connecting ring 32 rotatably connects the locking rod 31 and the first hinge rod 22. A stop block 33 and a pull ring 34 are respectively provided at both ends of the locking rod 31. The stop block 33 is perpendicular to the locking rod 31. When the locking rod 31 swings, the stop block 33 engages with the second hinge rod 23 to lock the folded structure in its set state. In addition, a traction rope 35 is fixedly connected to the pull ring 34. The operator can pull the traction rope 35 to drive the locking rod 31 to swing, so that the stop block 33 separates from the second hinge rod 23, thereby releasing the lock of the folded structure in its compressed state and performing the clamping operation of the electrode 5.
[0034] Preferably, the thickness of the stop block 33 gradually decreases in the direction away from the locking rod 31, so that the end of the stop block 33 is specifically sharp. When the stop block 33 and the second hinge rod 23 are engaged, the end of the stop block 33 guides the second hinge rod 23, making the engagement process between the two more convenient.
[0035] Preferably, each clamping nozzle 1 is detachably fitted with a sleeve 6 on its outer periphery. The curvature of the clamping nozzle 1 and the sleeve 6 is the same, and the inner diameter of the sleeve 6 is slightly larger than the diameter of the clamping nozzle 1, so that the sleeve 6 can be fitted on the outer periphery of the clamping nozzle 1. When performing the clamping operation of the electrode 5, the clamping nozzle 1 extends into the molten steel ladle and comes into contact with the molten steel. After the electrode 5 is retrieved, the molten steel solidifies on the outer periphery of the sleeve 6. The operator only needs to remove the discarded sleeve 6 and replace it with a new sleeve 6 to perform the retrieval operation again.
[0036] Please refer to the instruction manual appendix. Figures 4 to 6 The operator connects to the hanging device via the hanging ring 4, then compresses the folding structure, causing each clamping jaw 1 to swing in a direction away from each other. When the distance between the first hinge rod 22 and the second hinge rod 23 is less than or equal to the length of the locking rod 31, the locking rod 31 is rotated to engage the stop block 33 of the locking rod 31 with the second hinge rod 23, keeping the clamping jaw 1 in an open state. Then, the clamping jaw 1 is moved by the hanging device to align with the electrode 5. The hanging device lowers the clamping jaw 1, placing the electrode 5 inside the clamping jaw 1. The operator pulls the traction rope 35, causing the locking rod 31 to rotate, separating the stop block 33 from the second hinge rod 23, releasing the compression and locking state of the folding structure. The folding structure is then pulled upwards, causing each clamping jaw 1 to move in a direction closer to each other, clamping and fixing the electrode 5. The clamping jaw 1 is then pulled upwards again to complete the retrieval operation of the electrode 5.
[0037] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.
[0038] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.
Claims
1. A device for retrieving electrodes from a molten steel ladle, characterized in that, include: The folding structure has a first hinge point and a second hinge point at both ends along its extension direction. A locking rod (31) is rotatably provided at the first hinge point. By rotating the locking rod (31), the end of the locking rod (31) away from the first hinge point is engaged with the second hinge point. The locking rod (31) locks the folding structure in its retracted state. The folding structure is connected to clamping mouths (1) on both sides of the second hinge point. When the folding structure retracts, each clamping mouth (1) swings around the second hinge point in a direction away from each other. When the folding structure extends, each clamping mouth (1) swings around the second hinge point in a direction closer to each other, so that each clamping mouth (1) is used to clamp the electrode (5).
2. The steel ladle electrode retrieval device according to claim 1, characterized in that, The folding structure includes four sets of parallel folding elements. Each folding element includes four connecting rods (21). A first hinge rod (22), a second hinge rod (23), a third hinge rod (24), and a fourth hinge rod (25) are respectively passed through the apex of each folding element. The first hinge rod (22) and the fourth hinge rod (25) are located at the first hinge point and the second hinge point, respectively. The locking rods (31) rotate around the first hinge rod (22). The folding elements are arranged in pairs at both ends of the first hinge rod (22).
3. The steel ladle electrode retrieval device according to claim 2, characterized in that, A connecting ring (32) is fixed on the side wall of the locking rod (31), and a limiting groove is provided on the side wall of the first hinge rod (22). The connecting ring (32) is engaged with the limiting groove, and the locking rod (31) is rotatably connected to the first hinge rod (22) through the connecting ring (32).
4. The steel ladle electrode retrieval device according to claim 3, characterized in that, One end of the locking rod (31) is vertically connected to a stop (33), which is used to engage the fourth hinge rod (25).
5. The steel ladle electrode retrieval device according to claim 4, characterized in that, The locking rod (31) has a pull ring (34) at one end away from the stop block (33), and the pull ring (34) is connected to a traction rope (35), which is used to drive the locking rod (31) to swing.
6. The steel ladle electrode retrieval device according to claim 5, characterized in that, A hanging ring (4) is provided at the midpoint of the side wall of the first hinge rod (22), and the hanging ring (4) is used to connect the hanging device.
7. The steel ladle electrode retrieval device according to claim 3, characterized in that, Each of the connecting rods (21) hinged to the fourth hinge rod (25) is connected to the clamping mouth (1), and the end of the connecting rod (21) is tangent to the end of the clamping mouth (1).
8. The steel ladle electrode retrieval device according to claim 4, characterized in that, Each of the clamping mouths (1) is detachably fitted with a sleeve (6) on its outer periphery. The curvature of the clamping mouth (1) and the sleeve (6) is the same. The inner diameter of the sleeve (6) is larger than the diameter of the clamping mouth (1). The sleeve (6) is located on the outer periphery of the clamping mouth (1).
9. The steel ladle electrode retrieval device according to claim 8, characterized in that, The arc of both the sleeve (6) and the clamp (1) is less than 180°.
10. The steel ladle electrode retrieval device according to claim 4, characterized in that, The thickness of the stop (33) gradually decreases in the direction away from the locking rod (31), so that the tapered end of the stop (33) is sharp.