Liftable steel ladle bottom argon blowing automatic joint device with double four connecting rods

Abstract

The utility model relates to the technical field of bearing disassembly metallurgy vehicle automatic joint devices, in particular to a double-four-connecting-rod lifting steel ladle bottom argon blowing automatic joint device which comprises a bottom argon blowing arc-shaped male joint, a high-temperature-resistant seal and a supporting frame, and the bottom argon blowing arc-shaped male joint is arranged above a fixing rod and can slide up and down. The device is characterized in that a four-connecting-rod lifting mechanism is arranged in the supporting frame, and the four-connecting-rod lifting mechanism is connected with the fixing rod; the bottom argon blowing arc male connector and the fixing rod are directly provided with a compression spring. The utility model has the advantages that: firstly, the spherical guide of the male connector is utilized, the sealing connection of the conical spring is reliable, the ladle car can be transformed and used on the basis of the original ladle car, the manufacturing cost is low, the sealing is reliable, steel slag blocks can conveniently flow down along the conical surface, the conical surface sealing is not easy to remain steel slag, and the conical surface is firmly matched without air leakage; and secondly, the device is simple in structure and convenient to transform and install, the working intensity of the bottom argon blowing joint of a maintainer is reduced, and the steelmaking labor productivity is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic jointing devices for metallurgical vehicles, specifically a double four-link lifting ladle bottom-blowing argon automatic jointing device. Background Technology

[0002] In modern steelmaking enterprises, due to the need to improve steel quality, molten steel requires bottom-blowing argon stirring during ladle tapping and transportation. This ensures uniform steel composition and temperature, promotes slag-steel reaction, and removes inclusions, including gaseous inclusions (N, H, O, S, P) and solid inclusions (some metallic or non-metallic oxides, such as aluminum oxide). Currently, commonly used bottom-blowing argon devices are typically located behind the ladle, using upper and lower male and female connectors, with springs for buffering and position compensation. Due to the limited structural placement of this argon blowing connection device, on-site welding is required to meet alignment requirements. Furthermore, the significant swaying of the ladle during descent can easily damage the connection device, leading to argon blowing failure. This often results in frequent damage to automatic bottom-blowing argon connectors, even requiring manual disassembly and reassembly, reducing production efficiency, creating a poor working environment for personnel, and hindering the pace and efficiency of steelmaking production.

[0003] Currently, the automatic connection devices for bottom-blowing argon in steel ladles in many metallurgical enterprises in my country mainly consist of a female connector and a male connector. The male connector is fixed to the rear of the ladle car and is mounted on the car. The female connector includes a fixing sleeve, a guide rod, a spring, and an outlet pipe. A ventilation channel is provided inside the guide rod, with its outlet located on the upper end face of the guide rod. The male and female connectors are sealed by O-rings, which are installed on the female connector. Argon gas controlled by the bottom-blowing argon control system enters the female connector's ventilation channel through the inlet of the male connector's inlet channel, and then flows into the ladle through a gas delivery pipe connected to the outlet pipe. After argon blowing is completed, the female and male connectors separate when the ladle car is lifted. Because the female connector is fixed to the ladle, its temperature remains relatively high. Therefore, the O-rings in the O-groove around the inlet of the concave spherical ventilation channel at the lower end of the female connector's guide rod are prone to damage, leading to leakage. In addition, when placing ladles on the ladle car, the ladle may swing due to human operation. When the ladle swings, it is easy for the ladle to collide with the male connector on the ladle car, which may cause the male connector to bend or even be scrapped. Summary of the Invention

[0004] The purpose of this invention is to provide a double four-link lifting steel ladle bottom blowing argon automatic connector device to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double four-bar linkage liftable steel ladle bottom-blowing argon automatic connector device, comprising a bottom-blowing argon arc-shaped male connector 11, a high-temperature resistant seal 10, and a support frame 4. The bottom-blowing argon arc-shaped male connector 11 is located above the fixed rod 3 and can slide up and down. The characteristic is that: the support frame 4 is provided with a four-bar linkage lifting mechanism, and the four-bar linkage lifting mechanism is connected to the fixed rod 3; the bottom-blowing argon arc-shaped male connector 11 and the fixed rod 3 are directly provided with a compression spring 9.

[0006] Preferably, the four-bar linkage lifting mechanism includes a downward connecting rod 7, a horizontal connecting rod 5, a vertical connecting rod 6, and a lifting platform 15. The horizontal connecting rod 5 is mounted on the top of the support plate 2 via a pin, and the two ends of the horizontal connecting rod 5 are hinged to the downward connecting rod 7 and the vertical connecting rod 6. The other end of the vertical connecting rod 6 is connected to the lifting platform 15 via a pin, and the lifting platform 15 is fixedly connected to the fixed rod 3.

[0007] Preferably, there are two four-bar linkage lifting mechanisms, symmetrically arranged on both sides of the fixed rod 3.

[0008] Preferably, when the downward pressure link 7 is not subjected to downward pressure, the downward pressure link 7 extends above the support surface 8 of the support frame 4.

[0009] Preferably, the bottom-blown argon arc-shaped male connector 11 is provided with a high-temperature resistant seal 10, and when not subjected to external force, the top of the bottom-blown argon arc-shaped male connector 11 is lower than the support surface 8.

[0010] Preferably, an argon gas hose 1 is provided below the fixing rod 3.

[0011] Preferably, the lifting platform 15 is provided with a moving groove 12.

[0012] Compared with the existing technology, the beneficial effects of this utility model are: First, it utilizes the spherical guide of the male connector and the reliable sealing connection of the conical spring. It can be modified and used on the basis of the original ladle car, with low manufacturing cost, reliable sealing, and convenient flow of steel slag blocks down the conical surface. The conical surface seal does not easily retain steel slag, ensuring a firm fit of the conical surface without leakage. Second, the device has a simple structure, is easy to modify and install, reduces the workload of maintenance workers at the bottom-blowing argon joint, and improves the labor productivity of steelmaking. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram: 1. Argon hose; 2. Support plate; 3. Fixing rod; 4. Support frame; 5. Horizontal connecting rod; 6. Vertical connecting rod; 7. Downward pressing connecting rod; 8. Support surface; 9. Compression spring; 10. High-temperature resistant seal; 11. Bottom-blown argon arc-shaped male connector; 12. Moving slot; 13. Guide arm; 14. Base; 15. Lifting platform. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1 This utility model provides a technical solution: a double four-bar linkage liftable steel ladle bottom-blowing argon automatic connector device, including a bottom-blowing argon arc-shaped male connector 11, a high-temperature resistant seal 10, and a support frame 4. The bottom-blowing argon arc-shaped male connector 11 is located above the fixed rod 3 and can slide up and down. The feature is that: the support frame 4 is provided with a four-bar linkage lifting mechanism, and the four-bar linkage lifting mechanism is connected to the fixed rod 3; the bottom-blowing argon arc-shaped male connector 11 and the fixed rod 3 are directly provided with a compression spring 9.

[0017] The four-bar linkage lifting mechanism includes a downward pressing link 7, a horizontal link 5, a vertical link 6, and a lifting platform 15. The horizontal link 5 is mounted on the top of the support plate 2 via a pin, and the two ends of the horizontal link 5 are hinged to the downward pressing link 7 and the vertical link 6. The other end of the vertical link 6 is connected to the lifting platform 15 via a pin, and the lifting platform 15 is fixedly connected to the fixed rod 3. The lifting platform 15 is provided with a moving groove 12.

[0018] There are two four-bar lifting mechanisms, symmetrically arranged on both sides of the fixed rod 3; when the downward pressing link 7 is not subjected to downward pressure, the downward pressing link 7 is higher than the support surface 8 of the support frame 4. At the same time, the bottom-blown argon arc-shaped male connector 11 is equipped with a high-temperature resistant seal 10, and when it is not subjected to external force, the top of the bottom-blown argon arc-shaped male connector 11 is lower than the support surface 8; an argon hose 1 is provided below the fixed rod 3.

[0019] When the ladle is placed on the support surface 8, the downward pressing link 7 is pressed down, and the fixed link 3 and the bottom-blown argon arc-shaped male connector 11 are lifted up through the four-bar linkage to connect with the female connector.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double four-link lifting ladle bottom-blowing argon automatic connector device, comprising a bottom-blowing argon arc-shaped male connector (11), a high-temperature resistant seal (10), and a support frame (4), wherein the bottom-blowing argon arc-shaped male connector (11) is located above a fixed rod (3) and can slide up and down, characterized in that: The support frame (4) is equipped with a four-bar linkage lifting mechanism, and the four-bar linkage lifting mechanism is connected to the fixed rod (3); the bottom-blown argon arc-shaped male connector (11) and the fixed rod (3) are directly equipped with compression springs (9).

2. The automatic argon-blowing connector device for a double four-link lifting ladle as described in claim 1, characterized in that: The four-bar linkage lifting mechanism includes a downward connecting rod (7), a horizontal connecting rod (5), a vertical connecting rod (6), and a lifting platform (15). The horizontal connecting rod (5) is mounted on the top of the support plate (2) by a pin, and the two ends of the horizontal connecting rod (5) are hinged to the downward connecting rod (7) and the vertical connecting rod (6). The other end of the vertical connecting rod (6) is connected to the lifting platform (15) by a pin, and the lifting platform (15) is fixedly connected to the fixed rod (3).

3. The automatic argon-blowing connector device for a double four-link lifting ladle as described in claim 1, characterized in that: The four-bar linkage lifting mechanism has two parts, which are symmetrically arranged on both sides of the fixed rod (3).

4. The automatic argon-blowing connector device for a double four-link lifting ladle as described in claim 2, characterized in that: When the downward pressure link (7) is not subjected to downward pressure, the downward pressure link (7) is higher than the support surface (8) of the support frame (4).

5. The automatic argon-blowing connector device for a double four-link lifting ladle as described in claim 1, characterized in that: The bottom-blown argon arc-shaped male connector (11) is provided with a high-temperature resistant seal (10), and when not subjected to external force, the top of the bottom-blown argon arc-shaped male connector (11) is lower than the support surface (8).

6. The automatic argon-blowing connector device for a double four-link lifting ladle according to claim 2, characterized in that: An argon hose (1) is provided below the fixing rod (3).

7. The automatic argon-blowing connector device for a double four-link lifting ladle according to claim 2, characterized in that: The lifting platform (15) is provided with a moving slot (12).

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