A converter slag tongs

Abstract

The utility model relates to metallurgical equipment technical field discloses a converter slag clamping device, including the slag tongs for clamping the slag, two counterweights, pin shaft, chain, chain link, U type ring, lifting hook, lifting ring and monitoring control device, the slag tongs are symmetrically arranged two groups, two groups of slag tongs are crossed hinged through pin shaft, two counterweights are installed above the end portion of slag tongs respectively, one end of chain is connected with the pin shaft seat near the counterweight one side through chain link, the other end of chain is connected with lifting ring through U type ring, lifting hook is installed on the lifting ring, and monitoring control device includes strain gauge sensor, angle sensor and remote terminal, strain gauge sensor is pasted on the inner wall of U type ring and lifting ring connection place, and angle sensor is installed at the bottom of lifting ring and is connected with remote terminal through wireless transmission. The present application improves the small capacity ladle slag operation efficiency, satisfies the small ladle fast rhythm production demand, and the safety is high.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment technology, specifically to a converter slag clamping device. Background Technology

[0002] Converter steelmaking, a crucial step in steel production, uses molten iron, scrap steel, and ferroalloys as primary raw materials. Through a series of complex physicochemical reactions, it effectively removes harmful impurities from the molten steel. During the smelting process, impurities in the metallic materials are oxidized by oxidizing agents to form oxides. These oxides then react with slagging agents and the furnace lining to ultimately form converter slag. Because the density of the slag is lower than that of the molten steel, it typically covers the surface of the molten steel.

[0003] Despite the availability of devices and measures such as sliding plates, slag plugs, and slag cones during the tapping process, slag with a thickness of 50-100 mm still enters the ladle in actual production. If the slag on the surface of the molten steel is not cleaned in time, it will seriously affect the quality of the molten steel, and consequently have an adverse impact on the performance of subsequent steel products.

[0004] Currently, existing technologies for treating slag on the surface of molten steel mainly focus on slag blocking operations; however, this method cannot achieve complete slag removal. While commonly used robotic slag removers and slag-collecting platforms can handle slag collection from ladles with a nominal capacity of 80 tons or more and a large slag diameter, and are particularly advantageous for ladles over 100 tons, they suffer from high equipment costs, inconvenient operation, and low efficiency for slag collection from small and medium-capacity ladles, failing to meet current needs. Therefore, we propose a converter slag-grabbing device. Utility Model Content

[0005] The purpose of this utility model is to provide a converter slag clamping device to solve the problems mentioned in the background art, such as high equipment cost, inconvenient operation, and low efficiency in the current slag removal operation of small and medium capacity steel ladles.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A converter slag gripping device includes slag grippers, counterweights, pins, chains, chain links, U-shaped rings, hooks, lifting rings, and a monitoring and control device. The slag grippers are arranged in an L-shape, and there are two sets of symmetrically arranged slag grippers. The two sets of slag grippers are cross-hinged by the pins. There are two counterweights, which are respectively installed above the ends of the slag grippers. An adjustment groove for adjusting the counterweights is provided above the ends of the slag grippers. A pin seat is connected to one side of each slag gripper of the counterweight. One end of the chain is connected to the pin seat near the counterweight via the chain link, and the other end of the chain is connected to the lifting ring via the U-shaped ring. The hook is installed on the lifting ring.

[0008] Preferably, the monitoring and control device includes a strain gauge sensor, an angle sensor, and a remote terminal. The strain gauge sensor is attached to the inner wall of the connection between the U-shaped ring and the hanging ring. The strain gauge sensor is connected to the remote terminal via wireless transmission. The remote terminal is connected to the audible and visual warning module.

[0009] Preferably, the angle sensor is installed at the bottom of the lifting ring and is wirelessly connected to a remote terminal for real-time monitoring of the tilt angle of the gripping device.

[0010] Preferably, the gripping end of the slag clamp has an arc-shaped structure and an anti-slip protrusion on the inner side.

[0011] Preferably, the top of the slag clamp located on both sides of the adjustment groove is provided with an adjustment scale, the counterweight is slidably located inside the adjustment groove, and the counterweight is internally threaded with limit fastening bolts, the bottom of both sides of the limit fastening bolts abutting against the top of the adjustment groove.

[0012] Preferably, the hook body surface is provided with a wear-resistant coating, which is a hard alloy coating.

[0013] This utility model has the following beneficial effects:

[0014] 1. Low cost and high efficiency: This device adopts a lightweight design and simple mechanical structure, which greatly reduces the cost of equipment research and development, manufacturing and maintenance. The operation process is simplified, and no complicated debugging or professional operators are required. The time for a single slag removal operation is shortened compared with traditional equipment, which significantly improves the efficiency of slag removal operations for small and medium-capacity steel ladles, reduces the operating cost per unit time, and achieves dual optimization of low cost and high efficiency, meeting the fast-paced production needs of small and medium-sized steel ladles.

[0015] 2. Precise and flexible gripping: The symmetrical L-shaped slag clamp design, with its interlocking joints, combined with the curved gripping end and anti-slip protrusions, forms a stable and efficient gripping structure. When gripping slag, the clamp utilizes the lever principle to generate a strong gripping force. Simultaneously, the curved structure and anti-slip protrusions increase the contact area and friction with the slag, enabling precise gripping even with irregularly shaped and smooth-surfaced slag. This effectively prevents slag slippage during gripping, improving the success rate and stability of the gripping process. Furthermore, the adjustable counterweight slides within the adjustment groove, changing the clamp's center of gravity. This allows the device to flexibly adapt to different slag positions within the ladle, easily handling slag gripping operations in complex locations such as ladle edges and corners.

[0016] 3. Intelligent safety monitoring: The strain gauge sensor and angle sensor in the monitoring and control device work together to provide comprehensive safety assurance for clamping operations. The strain gauge sensor monitors the force at the connection between the U-ring and the lifting ring in real time. When the force exceeds a preset threshold, it immediately transmits the data wirelessly to the remote terminal. The remote terminal quickly triggers the audible and visual alarm module to issue an alarm, reminding the operator to stop the operation. It can also automatically control the clamping device to stop moving, preventing equipment damage or safety accidents due to overload. The angle sensor monitors the tilt angle of the clamping device in real time. If the angle is abnormal, it also promptly provides feedback to ensure that the clamping device operates in a safe posture, avoiding slag spillage or equipment imbalance due to tilting, and ensuring safe and reliable operation.

[0017] 4. The hard alloy wear-resistant coating on the surface of the hook body has high hardness, strong wear resistance and good high temperature resistance, which effectively resists the friction and high temperature erosion of slag during hoisting, greatly reduces hook wear, extends hook service life, reduces equipment replacement frequency and maintenance costs, and ensures stable operation in long-term, high-frequency slag removal operations. Attached Figure Description

[0018] picture Figure 1 This is a schematic diagram of the slag clamping device of this utility model.

[0019] Figure 2 This is a side view of the slag clamping device of this utility model.

[0020] Figure 3 This is a top view of the slag clamp connection of this utility model.

[0021] Figure 4 This is a side view of the counterweight of this utility model connected to the slag clamp via a limiting fastening bolt.

[0022] Figure 5 This is a connection block diagram of the monitoring and control device of this utility model.

[0023] In the diagram: 1. Slag clamp; 2. Counterweight; 21. Adjustment groove; 22. Pin seat; 23. Limiting bolt; 3. Pin; 4. Chain; 5. Chain link; 6. U-shaped ring; 7. Lifting ring; 8. Lifting hook. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see the appendix Figure 1-5 As shown, a converter slag gripping device includes slag grippers 1, counterweights 2, pins 3, chains 4, chain links 5, U-shaped rings 6, hooks 8, lifting rings 7, and a monitoring and control device. The slag grippers 1 are arranged in an L-shape, with two sets of slag grippers 1 symmetrically arranged. The two sets of slag grippers 1 are cross-hinged by pins 3. There are two counterweights 2, which are respectively installed above the ends of the slag grippers 1. An adjustment groove 21 for adjusting the counterweights 2 is provided above the ends of the slag grippers 1. Each slag gripper 1 on one side of each counterweight 2 is connected to a pin seat 22. One end of the chain 4 is connected to the pin seat 2 via a chain link 5. The counterweight 2 is connected to the pin seat 22 on one side, and the other end of the chain 4 is connected to the lifting ring 7 via the U-shaped ring 6. The hook 8 is installed on the lifting ring 7. The clamping end of the slag clamp 1 has an arc-shaped structure and anti-slip protrusions on the inner side. The anti-slip protrusions on the inner side of the arc-shaped clamping end increase the contact friction with the slag, so that even when facing slag with a smooth surface and irregular shape, it can achieve a stable grip. The top of the slag clamp 1 located on both sides of the adjustment groove 21 is equipped with an adjustment scale. The adjustment scale on both sides allows for precise sliding adjustment of the counterweight 2. The counterweight 2 slides inside the adjustment groove 21. The counterweight 2 is internally threaded with limit fastening bolts 23 (see Appendix). Figure 4As shown, the counterweight 2 has an L-shaped structure and slides inside the adjustment groove 21. When adjustment is required, rotate the limiting fastening bolt 23 to separate the limiting fastening bolt 23 from the top of the slag clamp 1. Adjust the displacement according to the adjustment scale. After adjustment, rotate the limiting fastening bolt 23 so that the bottom sides of the limiting fastening bolt 23 abut against the top of the slag clamp 1 and the bottom sides of the limiting fastening bolt 23 abut against the top of the adjustment groove 21. Adjust the scale to accurately slide the counterweight 2 to adjust its position and ensure accuracy. The hook body surface of the hook 8 is provided with a wear-resistant coating, which is a hard alloy coating. Under the harsh working conditions of frequent lifting of high temperature and rough slag, the wear-resistant coating effectively resists the friction and high temperature erosion of the slag, greatly extends the service life of the hook, reduces the frequency of replacement due to hook wear, reduces equipment maintenance costs, and ensures the safety and reliability of the lifting process.

[0026] The slag gripping device consists of two symmetrical L-shaped slag grippers 1, which are cross-hinged by pins 3 to form a lever linkage structure. When the hook 8 is lifted by external force, the chain 4 transmits the pulling force through the chain link 5, U-shaped ring 6, and lifting ring 7, causing the end of the slag gripper 1 to move upward. Utilizing the lever principle, the gripping ends close synchronously. The anti-slip protrusions on the inner side of the arc-shaped gripping end increase the contact friction with the slag, enabling a stable grip even on slag with a smooth surface and irregular shape. This structural design concentrates the gripping force at the gripping end, allowing for more flexible and precise slag gripping operations in the narrow space of small and medium-capacity ladles compared to traditional parallel grippers.

[0027] Furthermore, two counterweights 2 are respectively installed in the adjustment grooves 21 above the ends of the slag clamps 1. Operators can precisely adjust the position of the counterweights 2 by sliding them along the adjustment scales on both sides of the adjustment grooves 21, according to the position of the slag inside the ladle and the clamping requirements. For example, when clamping slag at the edge of the ladle, the counterweights are moved outwards from the slag clamps to increase the outward torque, making it easier for the slag clamps to penetrate deeper into the edge of the ladle. After adjustment, the counterweights are fixed in place by the limiting bolts 23 abutting against the top of the adjustment grooves 21, ensuring the stability of the counterweight position during operation, thereby optimizing the center of gravity of the slag clamps and improving the balance and flexibility of the device operation.

[0028] Furthermore, it is easy to operate and highly efficient, significantly improving the efficiency of slag removal operations for small and medium-capacity steel ladles, reducing operating costs per unit time, achieving a dual optimization of low cost and high efficiency, and meeting the fast-paced production needs of small and medium-sized steel ladles.

[0029] Furthermore, compared to traditional slag removal equipment suitable for large-capacity ladles, this device demonstrates significant advantages in slag removal operations for small and medium-capacity ladles. It boasts low equipment cost, simplified operation procedures, no need for complex debugging by professional personnel, shortened slag removal time per operation, and significantly improved operational efficiency. Precise gripping and flexible center of gravity adjustment increase the success rate of gripping and effectively reduce slag residue. The intelligent monitoring system comprehensively ensures operational safety, reduces the accident rate, and provides an efficient, economical, and safe solution for slag cleaning in the steel smelting process.

[0030] Please see the appendix Figure 1 , 2 As shown in Figure 5, the monitoring and control device includes a strain gauge sensor, an angle sensor, and a remote terminal. The strain gauge sensor is attached to the inner wall of the connection between the U-shaped ring 6 and the lifting ring 7. The strain gauge sensor is connected to the remote terminal via wireless transmission. The remote terminal is connected to the audible and visual warning module. The angle sensor is installed at the bottom of the lifting ring 7 and is wirelessly connected to the remote terminal for real-time monitoring of the tilt angle of the clamping device.

[0031] Strain gauge sensors are attached to the inner wall where the U-shaped ring 6 connects to the lifting ring 7, monitoring the force at the connection point in real time. If the force exceeds a preset threshold during slag clamping, such as clamping an abnormally large piece of slag causing excessive tension, the strain gauge sensors will wirelessly transmit the force data to a remote terminal. Upon receiving the data, the remote terminal will immediately trigger an audible and visual warning module to issue an alarm, reminding the operator to stop the operation. At the same time, it can automatically control the clamping device to stop moving, effectively avoiding safety accidents such as chain 4 breakage and component damage due to overload, and ensuring the safety of equipment and personnel.

[0032] Furthermore, an angle sensor installed at the bottom of the lifting ring 7 continuously monitors the tilt angle of the clamping device. During the slag lifting process, if the angle sensor detects an abnormal tilt angle of the clamping device, such as imbalance caused by ladle shaking or uneven slag distribution, the angle data will be quickly transmitted wirelessly to the remote terminal. The remote terminal will also trigger an audible and visual alarm and control the device to adjust its posture or stop lifting according to a preset program to prevent slag spillage or device tipping, ensuring the safe and stable operation of the entire slag removal process.

[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A converter slag gripping device, comprising slag gripping clamps (1), a counterweight (2), a pin (3), a chain (4), a chain link (5), a U-shaped ring (6), a hook (8), a lifting ring (7), and a monitoring and control device for gripping slag, characterized in that: The slag clamp (1) is arranged in an L-shape. There are two sets of symmetrically arranged slag clamps (1). The two sets of slag clamps (1) are cross-hinged by the pin (3). There are two counterweights (2). The two counterweights (2) are respectively installed above the end of the slag clamp (1). An adjustment groove (21) for adjusting the counterweights (2) is provided above the end of the slag clamp (1). A pin seat (22) is connected to the slag clamp (1) on one side of each counterweight (2). One end of the chain (4) is connected to the pin seat (22) on the side near the counterweight (2) through the chain link (5). The other end of the chain (4) is connected to the lifting ring (7) through the U-shaped ring (6). The hook (8) is installed on the lifting ring (7).

2. The converter slag clamping device according to claim 1, characterized in that: The monitoring and control device includes a strain gauge sensor, an angle sensor and a remote terminal. The strain gauge sensor is attached to the inner wall of the connection between the U-shaped ring (6) and the hanging ring (7). The strain gauge sensor is connected to the remote terminal via wireless transmission. The remote terminal is connected to the sound and light warning module.

3. The converter slag clamping device according to claim 2, characterized in that: The angle sensor is installed at the bottom of the lifting ring (7) and is wirelessly connected to a remote terminal for real-time monitoring of the tilt angle of the clamping device.

4. The converter slag clamping device according to claim 1, characterized in that: The clamping end of the slag clamp (1) has an arc-shaped structure and anti-slip protrusions on the inner side.

5. The converter slag clamping device according to claim 1, characterized in that: An adjustment scale is provided on the top of the slag clamp (1) located on both sides of the adjustment groove (21). The counterweight (2) is slidably located inside the adjustment groove (21). The counterweight (2) is threadedly connected to a limit fastening bolt (23). The bottom of both sides of the limit fastening bolt (23) abuts against the top of the adjustment groove (21).

6. The converter slag clamping device according to claim 1, characterized in that: The hook body surface of the hook (8) is provided with a wear-resistant coating, which is a hard alloy coating.

Images