Continuous casting ladle long nozzle demolding mechanism

Abstract

The utility model belongs to the technical field of continuous casting equipment, and provides a continuous casting large ladle long nozzle demolding mechanism which comprises a U-shaped fork arm and a backing ring, the backing ring is installed in a U-shaped space of the U-shaped fork arm through a rotating shaft, a limiting guide groove is machined in the side, close to the U-shaped fork arm, of the backing ring, and a positioning rod is arranged on the side, close to the backing ring, of the U-shaped fork arm. And the positioning rod can extend into the limiting guide groove and can slide in the range of the limiting guide groove. According to the long nozzle demoulding mechanism, the backing ring and the fork arm structure of the long nozzle demoulding mechanism are improved, so that when the backing ring rotates around the rotating shaft in the fork arm, the rotating angle of the backing ring is limited, the backing ring can only incline and shake within a small angle range, and the problems that the backing ring and a long nozzle are blocked due to large-angle inclination of the backing ring, and demoulding is difficult are solved; and the demolding efficiency of the long nozzle is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of continuous casting equipment, relates to a long tundish nozzle for continuous casting, and specifically is a demoulding mechanism for a long tundish nozzle in continuous casting. Background Technique

[0002] In iron and steel production enterprises, the long tundish nozzle for continuous casting refers to a key refractory object used between the ladle and the tundish to protect the molten steel from secondary oxidation and prevent the molten steel flow from splashing; the long nozzle is usually sleeved on the lower nozzle of the ladle and fixed and sealed in a certain way to ensure that the molten steel in the ladle flows smoothly into the tundish under a protected environment and control the injection of the entire molten steel flow. After the continuous caster starts casting, the ladle is placed on the fork arm of the ladle turntable by the crane at the ladle receiving position, waits for the turntable to rotate the ladle 180° to the casting position, then aligns the nozzle on the long nozzle manipulator with the lower nozzle of the ladle, uses the long nozzle manipulator to keep the long nozzle in contact with the lower nozzle of the ladle, opens the sliding nozzle to start casting the molten steel; waits for the molten steel in the ladle to be cast, closes the sliding nozzle, disengages the long nozzle manipulator from the lower nozzle of the ladle, and the ladle rotates 180° to the ladle receiving position to complete the casting of one ladle of molten steel. In the above process, the loading and unloading of the long nozzle is a core process. Due to its high loading and unloading frequency, high difficulty, and harsh working environment, workers are prone to injury and production accidents are caused. Currently, the production work in the ladle area has basically been completed by machines. The traditional long nozzle loading and unloading tool uses a circular demoulding ring to take the long nozzle. During the process of demoulding and removing the long nozzle from the retaining ring, it is necessary to shake the retaining ring to demould the long nozzle. At the same time, due to the shaking, the retaining ring is often in a state with a large inclination angle. When loading and unloading the long nozzle, the retaining ring and the long nozzle are easily stuck, making it difficult to demould the long nozzle. Content of the Utility Model

[0003] The purpose of the utility model is to provide a demoulding mechanism for a long tundish nozzle in continuous casting, which can solve the above problems, avoid the long nozzle from being stuck, reduce the demoulding difficulty, and improve the production efficiency.

[0004] The technical solution adopted by the utility model to achieve the above purpose is:

[0005] A demoulding mechanism for a long tundish nozzle in continuous casting includes a U-shaped fork arm and a retaining ring. The retaining ring is installed in the U-shaped space of the U-shaped fork arm through a rotating shaft. A limiting and guiding groove is machined on one side of the retaining ring close to the U-shaped fork arm, and a positioning rod is arranged on one side of the U-shaped fork arm close to the retaining ring. The positioning rod can extend into the limiting and guiding groove and slide within the range of the limiting and guiding groove.

[0006] Furthermore, the positioning rod is fixedly connected to the U-shaped fork arm through a rib plate and a positioning rod support.

[0007] Furthermore, the rib plate is fixed in the U-shaped space of the U-shaped fork arm, the positioning rod support is fixed on the rib plate, and the positioning rod is fixed on the positioning rod support.

[0008] The beneficial effects of the present utility model are as follows: By improving the retainer ring and fork arm structure of the long nozzle demoulding mechanism of the present utility model, when the retainer ring rotates around the rotating shaft in the fork arm, the rotation angle of the retainer ring is limited, so that it can only tilt and shake within a small angle range, avoiding the problem that the retainer ring is stuck with the long nozzle due to large-angle tilting of the retainer ring, resulting in difficult demoulding, and improving the efficiency of long nozzle demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is the main structural view of the present utility model;

[0010] Figure 2 is the top structural view of the present utility model;

[0011] Figure 3 is the side structural view of the present utility model;

[0012] Figure 4 is Figure 2 the partial screenshot in the direction A shown;

[0013] In the figure, 1, U-shaped fork arm; 2, retainer ring; 3, rotating shaft; 4, limit guiding groove; 5, positioning rod; 6, rib plate; 7, positioning rod support. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0015] As Figures 1 to 4 shown, a continuous casting tundish long nozzle demoulding mechanism includes a U-shaped fork arm 1 and a retainer ring 2. The retainer ring 2 is installed in the U-shaped space of the U-shaped fork arm 1 through a rotating shaft 3. A limit guiding groove 4 is machined on one side of the retainer ring 2 close to the U-shaped fork arm 1, and a positioning rod 5 is arranged on one side of the U-shaped fork arm 1 close to the retainer ring 2. The positioning rod 5 can extend into the limit guiding groove 4 and slide within the range of the limit guiding groove 4.

[0016] Among them, the positioning rod 5 is fixedly connected to the U-shaped fork arm 1 through a rib plate 6 and a positioning rod support 7; the rib plate 6 is fixed inside the U-shaped fork arm 1, the positioning rod support 7 is fixed on the rib plate 6, and the positioning rod 5 is fixed on the positioning rod support 7.

[0017] When the trunnion ring 2 rotates around the rotating shaft 3 within the U-shaped fork arm 1, the combined action of the limit guiding groove 4 and the positioning rod 5 restricts the rotation angle of the trunnion ring 2, enabling it to tilt and shake only within a small angle, thus preventing the trunnion ring 2 from getting stuck with the long nozzle due to large-angle tilting. This makes it easier for the long nozzle to be demolded and improves the demolding efficiency.

[0018] The above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A continuous casting tundish long nozzle demoulding mechanism, comprising a U-shaped fork arm and a retaining ring, characterized in that: The ring support is installed in the U-shaped space of the U-shaped fork arm through a rotating shaft. A limiting guide groove is machined on one side of the ring support close to the U-shaped fork arm. A positioning rod is arranged on one side of the U-shaped fork arm close to the ring support. The positioning rod can extend into the limiting guide groove and slide within the range of the limiting guide groove.

2. The stripping mechanism for the long nozzle of the tundish in continuous casting according to claim 1, wherein: The positioning rod is fixedly connected to the U-shaped fork arm through a rib plate and a positioning rod support.

3. The continuous casting tundish long nozzle demoulding mechanism according to claim 2, characterized in that: The rib plate is fixed in the U-shaped space of the U-shaped fork arm. The positioning rod support is fixed on the rib plate, and the positioning rod is fixed on the positioning rod support.

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