Slag pushing device of converter molten steel tank car

Abstract

The utility model discloses a slag pushing device of a converter molten steel tank truck, which belongs to the technical field of steelmaking equipment and comprises a slag pushing plate, a plurality of hinge lugs are arranged at the top of the slag pushing plate, slag collecting plates for gathering slag to the middle are arranged on two sides of the slag pushing plate, and a plurality of supporting wheels are arranged below the hinge lugs. A plurality of pin shafts are arranged on the head portion of the converter molten steel tank car, a long-strip-shaped hole in the vertical direction is formed in the hinge lug, and the converter molten steel tank car is connected with the slag pushing device in the mode that the pin shafts penetrate through the long-strip-shaped hole of the hinge lug. The slag pushing device solves the technical problems that in the existing steelmaking technology, when a loader / forklift is used for slag pushing operation, safety risks are high, and operation is complex, efficient, safe and flexible furnace pit accumulated slag cleaning is achieved, production efficiency is improved, and the safety risks are reduced; and the requirement for slag removal by using a loader / forklift is reduced, so that the safety risk of operators is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of steelmaking equipment, and in particular relates to a slag pushing device for a converter molten steel tank car. Background Art

[0002] Steelmaking is a metalworking process that controls the carbon content (usually less than 2%) and adjusts the proportions of various elements. This process involves eliminating harmful elements (such as P, S, O, N, etc.) while retaining or increasing beneficial elements (such as Si, Mn, Ni, Cr, etc.). The main step in steelmaking is to put pig iron into a steelmaking furnace and melt it according to a specific process. Steelmaking products come in various forms, including ingots, continuous casting billets, and various steel castings. During the steelmaking process, slag accumulates in the converter pit because the oxides and flux reaction products generated by chemical reactions float on the surface of the molten steel and are difficult to separate completely. Incomplete steel tapping and slag removal operations result in some slag residues. Long-term use of equipment wear and slag pushing efficiency limitations gradually accumulate in the pit. This accumulation is not only due to the influence of physical properties and operating processes, but also affected by temperature fluctuations and the various alloy oxides generated during the refining process of different steel grades, which ultimately leads to the continuous accumulation of slag in the pit.

[0003] In the steelmaking process, various processing equipment is required, among which the molten steel tanker is an important transportation equipment. It is mainly used to safely and efficiently transport the molten steel from the steelmaking furnace from the steelmaking workshop to the foundry workshop or a place for further refining. It has a heat preservation function, which can keep the molten steel at a high temperature to ensure that it does not cool down during transportation, and accurately pour the molten steel into the mold or tundish for subsequent processing through hydraulic or mechanical control.

[0004] In the existing steelmaking technology, the slag accumulated in the converter pit usually needs to be cleaned in time. If there is a lot of slag and the slag is not pushed in time, it is easy to cause the molten steel tanker or slag tanker to fall off the track, seriously affecting the normal smelting of the converter, and even causing unplanned equipment shutdown. At present, the main method is to use a special loader / forklift to enter the pit for slag pushing; however, the existing technical solution has the following problems:

[0005] 1. There are great safety hazards when professional operators use loaders / forklifts to enter the furnace pit to push slag. The furnace pit environment is dangerous and may cause accidents to operators;

[0006] Second, additional loaders / forklifts and operators are required to carry out slag pushing operations, which increases the complexity and cost of the production process.

[0007] Therefore, an automatic slag pushing device is urgently needed to improve the efficiency and safety of steelmaking production. Utility Model Content

[0008] The utility model aims to provide a slag pushing device for a converter molten steel tank car to solve the technical problems of high safety risks and complex operations in the existing steelmaking technology proposed in the above-mentioned background technology using a loader / forklift for slag pushing operations.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A slag pushing device for a converter steel tank car comprises a slag pushing plate, which is the main part of the slag pushing device and is used to directly push and clean the slag; a plurality of hinge ears are arranged on the top of the slag pushing plate, and slag collecting plates for gathering the slag to the middle are arranged on both sides of the slag pushing plate, and a plurality of supporting wheels are arranged under the hinge ears for supporting the slag pushing device so that it can move smoothly in the furnace pit; wherein a plurality of pin shafts are arranged at the head of the converter steel tank car, and a vertical long strip hole is arranged on the hinge ear, and the converter steel tank car is connected to the slag pushing device by passing the pin shaft through the long strip hole of the hinge ear, allowing the slag pushing plate to have a certain activity space, so that the slag pushing device can float up and down to adapt to slag accumulation at different heights.

[0011] Preferably, the slag pushing plate is a rectangular plate structure, and a plurality of rib plates are arranged on the slag surface of the slag pushing plate; the rectangular plate-shaped slag pushing plate provides sufficient slag pushing area, and the lower end extends into the furnace pit to ensure the slag pushing effect.

[0012] Preferably, the rib plate is a strip structure, and the rib plate is arranged in a vertical direction; it is used to enhance the structural strength of the slag pushing plate and improve the slag pushing capacity.

[0013] Preferably, a plurality of support plates are disposed on the tank car surface of the slag pusher plate; the support plates are located between the slag pusher plate and the converter molten steel tank car to provide additional support for the slag pusher plate and increase the overall structural stability.

[0014] Preferably, the slag collecting plate is a plate-shaped structure, and the angle between the slag collecting plate and the slag pushing plate is 120 to 160 degrees; to ensure the best slag gathering effect, the angle range may be adjusted according to actual needs.

[0015] Preferably, the angle between the slag collecting plate and the slag pushing plate is 120 degrees or 160 degrees.

[0016] Preferably, the distance between the bottom of the slag pushing plate and the bottom surface of the furnace pit is 10 to 20 mm; while ensuring the slag pushing effect, the slag pushing plate is prevented from directly contacting the bottom surface of the furnace pit, thereby reducing wear.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model provides a slag pushing device for a converter steel tank car, which solves the technical problems of high safety risk and complicated operation in the existing steelmaking technology of using a loader / forklift to push slag, realizes efficient, safe and flexible cleaning of furnace pit slag, improves production efficiency and reduces safety risks. The utility model realizes effective pushing and gathering of slag through the design of a slag pushing plate and a slag collecting plate, improves the slag cleaning efficiency; by setting a proper angle between the slag collecting plate and the slag pushing plate, the best slag gathering effect is ensured. The design of hinge ears, pins and long strip holes enables the slag pushing device to float up and down, adapt to slag accumulation of different heights, and enhance the adaptability of the device; the design of rib plates and support plates enhances the structural strength of the slag pushing plate, improves the slag pushing capacity and overall stability. A support wheel is set behind the slag collecting plate to provide a balanced support, ensuring the stability of the slag pushing device during operation; by controlling the distance between the bottom of the slag pushing plate and the bottom of the furnace pit, while ensuring the slag pushing effect, the slag pushing plate is prevented from directly contacting the bottom of the furnace pit, reducing equipment wear. Since the device can be mounted directly on the steel tanker, the need for separate loaders for slag removal is reduced, thereby reducing safety risks for operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of a preferred embodiment of the utility model;

[0020] Figure 2 A top view of a preferred embodiment of the utility model;

[0021] Figure 3 It is a side view of a preferred embodiment of the utility model.

[0022] In the figure: 1. hinge ear; 2. slag pushing plate; 3. slag collecting plate; 4. rib plate; 5. support plate; 6. support wheel; 7. pin shaft. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0024] like Figure 1-Figure 3 As shown:

[0025] A slag pushing device for a converter steel tank car comprises a slag pushing plate 2, a plurality of hinge ears 1 are arranged on the top of the slag pushing plate 2, slag collecting plates 3 for gathering the slag to the middle are arranged on both sides of the slag pushing plate 2, a plurality of supporting wheels 6 are arranged below the hinge ears 1, wherein a plurality of pin shafts 7 are arranged at the head of the converter steel tank car, and a vertical long strip hole is arranged on the hinge ear 1, and the converter steel tank car is connected to the slag pushing device by the pin shaft 7 passing through the long strip hole of the hinge ear 1.

[0026] The slag pusher plate 2 is a rectangular plate-shaped structure. The lower end of the slag pusher plate 2 extends a certain length into the furnace pit, and can penetrate into the bottom of the furnace pit where the slag is accumulated, so as to more effectively push and clean the accumulated slag in the furnace pit and reduce the residue. The slag surface of the slag pusher plate 2 is provided with a plurality of rib plates 4, which are strip-shaped structures and are arranged in a vertical direction. They are used to improve the overall rigidity of the slag pusher plate 2 and enhance its ability to resist stress deformation during the slag pushing process. The tank car surface of the slag pusher plate 2 is provided with a plurality of support plates 5, which are used to connect with other parts of the slag pushing device and provide stable mechanical support, so that the slag pusher plate 2 can maintain stability and efficiency during operation.

[0027] The slag collecting plate 3 is a plate-shaped structure, and the angle between the slag collecting plate 3 and the slag pushing plate 2 is 120 to 160 degrees, including 120 degrees and 160 degrees.

[0028] The distance between the bottom of the slag pusher plate 2 and the bottom of the furnace pit is 10-20 mm.

[0029] The slag pushing device is provided with two supporting wheels 6, and the supporting wheels 6 are arranged below the hinge ear 1 and behind the slag pushing plate 2. In actual use, the height of the supporting wheels 6 is set at a lowest point to ensure that when the slag pushing device is operating, the slag pushing plate 2 can be slightly lifted to maintain a gap of 10 to 20 mm with the ground, so as to reduce friction and wear and improve the slag pushing efficiency.

[0030] Working principle:

[0031] The slag pushing device is installed on the front of the converter steel tank car; the converter steel tank car drives the slag pushing device to move into the furnace pit, and the angle between the slag collecting plate 3 and the slag pushing plate 2 is 120 to 160 degrees. As the converter steel tank car moves, the slag collecting plate 3 guides the slag on the edge of the furnace pit to the front of the slag pushing plate 2 at the bottom of the pit, so that the slag pushing plate 2 can push the slag more effectively; the supporting wheels 6 make the slag pushing plate 2 slightly lifted during operation, maintaining a certain gap (10 to 20 mm) with the bottom of the pit, reducing the friction between the slag pushing plate 2 and the ground, ensuring the smoothness of the slag pushing process.

[0032] Since the slag pusher plate 2 is connected to the converter steel tank car through the hinge ear 1 and the pin 7, the hinge ear 1 is provided with a long strip hole, and the pin 7 can move up and down in this hole; therefore, when the upward force on the slag pusher plate 2 is greater than the friction force between the hinge ear 1 and the pin 7, the slag pusher plate 2 can be lifted upward; when the slag pusher plate 2 encounters a large or accumulated slag, the slag exerts a forward resistance on the slag pusher plate 2. This resistance can be decomposed into two components: a horizontal force and a vertical upward force; the horizontal force will be transmitted to the converter steel tank car, causing the converter steel tank car to slow down or stop; the vertical upward force will act on the slag pusher plate 2, causing it to have an upward movement trend; when encountering a smaller slag, the slag pusher plate 2 will remain in place and push the slag normally; when encountering a larger or accumulated slag, the upward force generated is sufficient to overcome the gravity of the slag pusher plate 2, causing it to lift up, thereby avoiding excessive resistance acting on the converter steel tank car. The converter steel tanker stops at an appropriate position, ready to receive the steel. The converter tilts and pours the steel into the tank of the converter steel tanker. After the steel is filled, the converter steel tanker drives from the converter area to the designated hoisting position. At the hoisting position, the crane lifts the converter steel tanker filled with steel from the steel tanker and transports it to the next process. After the steel tanker loads the empty steel tanker, it starts the next operation. During each operation of the converter steel tanker, the slag in the furnace pit can be cleaned by the steel tanker's own power.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A slag pushing device for a converter molten steel tank car, characterized in that: The invention comprises a slag pushing plate (2), wherein a plurality of hinged ears (1) are arranged on the top of the slag pushing plate (2), slag collecting plates (3) for gathering the slag to the middle are arranged on both sides of the slag pushing plate (2), and a plurality of supporting wheels (6) are arranged below the hinged ears (1), wherein a plurality of pins (7) are arranged on the head of the converter steel tank car, and a vertical long strip hole is arranged on the hinged ear (1), and the converter steel tank car is connected to the slag pushing device by the pins (7) passing through the long strip hole of the hinged ear (1).

2. The slag pushing device for a converter steel tank car according to claim 1, characterized in that: The slag pusher plate (2) is a rectangular plate-shaped structure, and a plurality of rib plates (4) are arranged on the slag surface of the slag pusher plate (2).

3. The slag pushing device for a converter steel tank car according to claim 2, characterized in that: The rib plate (4) is a strip-shaped structure, and the rib plate (4) is arranged in a vertical direction.

4. The slag pushing device for a converter steel tank car according to claim 1, characterized in that: The tank car surface of the slag pushing plate (2) is provided with a plurality of supporting plates (5).

5. The slag pushing device for a converter steel tank car according to claim 1, characterized in that: The slag collecting plate (3) is a plate-shaped structure, and the angle between the slag collecting plate (3) and the slag pushing plate (2) is 120 to 160 degrees.

6. The slag pushing device for a converter steel tank car according to claim 1, characterized in that: The angle between the slag collecting plate (3) and the slag pushing plate (2) is 120 degrees or 160 degrees.

7. The slag pushing device for a converter steel tank car according to claim 1, characterized in that: The distance between the bottom of the slag pusher plate (2) and the bottom surface of the furnace pit is 10 to 20 mm.

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