Continuous casting billet turning device

Abstract

The utility model relates to a continuous casting billet turning device, and belongs to the technical field of steelmaking continuous casting in the metallurgical industry. According to the technical scheme, the hoisting device comprises a clamping head (1), a bolt (2), a U-shaped hoisting ring (3), a chain (4), a steel wire rope (5) and a crown block (6), the clamping head (1) is of a U-shaped structure matched with a casting blank, the U-shaped hoisting ring (3) is connected to the clamping head (1) through the bolt (2), one end of the chain (4) is connected with the U-shaped hoisting ring (3), and the other end of the chain (4) is connected with the crown block (6) through the steel wire rope (5). The casting blank overturning device has the advantages of being capable of achieving overturning of casting blanks, simple in structure and high in blank overturning efficiency.

Description

Technical Field

[0001] This utility model relates to a billet turning device for continuous casting, belonging to the field of continuous casting technology in the steelmaking industry of metallurgy. Background Technology

[0002] Continuous casting is currently the main steelmaking process, and most steel companies in my country have achieved full continuous casting steelmaking production. Due to the influence of steel grades and processes, some continuously cast billets may have certain quality defects on their surface, requiring inspection and cleaning. When it is necessary to inspect and clean the quality defects on the lower surface of the continuously cast billet, a billet flipping operation is required. However, due to the large length, width, and weight of the billets, specialized equipment is needed for this operation. Traditional hydraulic slab flipping machines are complex in structure, require large investments, have high operating costs, slow flipping speeds, are prone to malfunctions, and are complex to operate, significantly impacting continuous casting billet production. Other flipping tools utilize clamps or steel ropes for binding, relying on cranes and the slab's own weight to complete the flipping, improving efficiency to some extent. However, the installation and removal of these tools take considerable time, affecting flipping efficiency and ultimately leading to a decrease in steelmaking production efficiency. Some manufacturers even use crowbars for manual flipping to improve efficiency, resulting in high labor intensity and danger for workers. Utility Model Content

[0003] The purpose of this invention is to provide a continuous casting billet turning device that can turn the billet over. It has a simple structure, high turning efficiency, and solves the problems existing in the background technology.

[0004] The technical solution of this utility model is:

[0005] A continuous casting billet turning device includes a clamp, bolts, a U-shaped lifting ring, a chain, a wire rope, and a crane. The clamp is a U-shaped structure that fits with the billet. The U-shaped lifting ring is connected to the clamp by bolts. One end of the chain is connected to the U-shaped lifting ring, and the other end of the chain is connected to the crane by a wire rope.

[0006] The clamp head is a U-shaped structure made of a steel plate. It includes an upper toothed edge, an extrusion post, and a lower toothed edge. The included angle Φ between the upper toothed edge and the extrusion post is greater than or equal to 80° and less than or equal to 90°. The included angle β between the lower toothed edge and the extrusion post is greater than or equal to 85° and less than or equal to 95°.

[0007] The length of the extrusion column is greater than or equal to the billet thickness plus 10 mm, and less than or equal to 1.4 times the billet thickness.

[0008] The lengths of the upper and lower tooth edges are greater than or equal to 0.7 times the thickness of the billet and less than or equal to 1.4 times the thickness of the billet.

[0009] The connection between the extrusion column and the lower tooth edge is provided with a hinge hole that mates with the bolt.

[0010] The beneficial effects of this utility model are: it can realize the flipping of one or more casting billets, and can also realize the 90° flipping or 180° flipping of the casting billet. The structure is simple and the operation is convenient. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the present invention;

[0012] Figure 2 This is a schematic diagram of the card head of this utility model;

[0013] Figure 3 This is a schematic diagram of the billet before it is turned over in this utility model.

[0014] Figure 4 This is a schematic diagram showing the billet of this utility model after being rotated 90°.

[0015] In the diagram: 1. Clamp; 2. Bolt; 3. U-shaped lifting ring; 4. Chain; 5. Wire rope; 6. Overhead crane; 7. Casting billet; 8. Casting billet;

[0016] 1-1, Upper tooth edge; 1-2, Extrusion column; 1-3, Lower tooth edge; 1-4, Hinge hole. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] See attached document Figure 1-4 A continuous casting billet turning device includes a clamp 1, a bolt 2, a U-shaped lifting ring 3, a chain 4, a wire rope 5, and a crane 6. The clamp 1 is a U-shaped structure that fits with the casting billet. The U-shaped lifting ring 3 is connected to the clamp 1 by the bolt 2. One end of the chain 4 is connected to the U-shaped lifting ring 3, and the other end of the chain 4 is connected to the crane 6 by the wire rope 5.

[0019] In this embodiment, as Figure 1 As shown, the billet turning device consists of a clamp 1, bolts 2, U-shaped lifting rings 3, chains 4, wire ropes 5, and a crane 6, among other components.

[0020] like Figure 2 As shown, the clamp head 1 is made by cutting a piece of steel plate. It is a U-shaped structure composed of upper tooth edge 1-1, extrusion column 1-2 and lower tooth edge 1-3. The length of upper tooth edge 1-1 is a, the length of lower tooth edge 1-3 is b, the length of extrusion column 1-2 is c, and the thickness of the cast billet is δ.

[0021] In order to make it easy for the chuck 1 to hook onto the billet, δ+10mm≤c≤1.4*δ. If the value of c is too large, the chuck 1 will occupy a large amount of the operating space under the billet.

[0022] If the length b of the lower tooth edge 1-3 of the chuck 1 is too small, the chuck 1 will detach from the billet at the beginning of lifting; if the length b of the lower tooth edge 1-3 of the chuck 1 is too large, the chuck 1 will not automatically detach from the billet after the billet is flipped.

[0023] 0.7*δ≤a≤b≤1.4*δ, the length a of the upper tooth edge 1-1 of the card head 1 is approximately equal to the length b of the lower tooth edge 1-3 of the card head 1, and a can be slightly less than b.

[0024] like Figure 2 As shown, the included angle Φ between the upper tooth edge 1-1 and the extrusion column 1-2, and the included angle β between the lower tooth edge 1-3 and the extrusion column 1-2. To ensure that the chuck 1 can easily establish self-locking with the billet at the beginning of lifting, and to ensure that the chuck 1 can smoothly disengage from the billet and complete automatic unhooking after the billet begins its second 90° rotation, the following values ​​are taken: 80°≤Φ≤90°, 85°≤β≤95°.

[0025] like Figure 2 As shown, the plumb bob position of the hinge hole 1-4 on the chuck 1 is outside the lower tooth edge 1-3, m≥25mm. The horizontal position of the hinge hole 1-4 on the chuck 1 is outside the extrusion column 1-2, n≥25mm. This design can increase the self-locking stability between the chuck 1 and the casting billet, making it easier for the chuck 1 to establish a self-locking relationship with the casting billet when the lifting begins and the chain tension is small, that is, the chuck 1 and the casting billet 8 are engaged together, and the chuck 1 and the casting billet 8 remain relatively stationary.

[0026] like Figure 1 , 3 As shown, this device can simultaneously perform a flipping operation on one or two or more billets. The positive pressure between the two billets is provided by the chuck 1 and chain 4 located on the left and right sides of the billet.

[0027] like Figure 3 As shown, during the billet flipping process, the clamp 1 is first hooked onto the billet, ensuring that the extrusion pins 1-2 of the clamp 1 are tightly against the side of the billet. Then, the overhead crane 6 is activated to pull the wire rope 5 upwards, which in turn drives the chain 4. The chain 4 then drives the U-shaped lifting ring 3, causing the clamp 1 to rotate under the pulling force of the U-shaped lifting ring 3. Figure 1 The position shown. The chuck 1 and the casting billet are at... Figure 2 The position shown indicates self-locking, meaning that no matter how large the pulling force received by the chuck 1 from the U-shaped lifting ring 3, the chuck 1 will still hold the billet. Figure 2 The position shown is in a relatively static state.

[0028] The overhead crane 6 pulls the steel wire rope 5 upward, causing the chain 4 to move upward. Under the combined force of their own weight and the tension of the chain 4, the billets 7 and 8 rotate 90° and stand vertically on the pad originally beneath them. Once the billets 7 and 8 are vertically positioned on the pad, the overhead crane 6 stops pulling the steel wire rope upward. Figure 4As shown, the overhead crane moves horizontally in the direction of billet tipping. At this time, the billet undergoes a second 90° flip under the drive of chain 4. When the crane operator notices that billets 7 and 8 are beginning to flip 90° for the second time, he stops the horizontal movement and lowers the wire rope 5. The chuck 1 loses its upward tension and moves downward under its own weight, detaching from the billet.

[0029] Follow these steps when turning the blank:

[0030] (1) Connect the clamp 1 to the chain 4 using bolt 2 and U-shaped eyelet 3;

[0031] (2) Pass the chain 4 and the chuck 1 through the billet from below, and hook the chuck 1 onto the billet, so that the extrusion post 1-2 of the chuck is close to the side of the billet, such as Figure 3 As shown, chain 4 is located below the 1 / 2 line in the length direction of the billet, and chain 4 is perpendicular to the long side of the billet, so that the shape and volume of the billet on both sides of chain 4 are approximately equal.

[0032] (3) Connect chain 4 and wire rope 5, start crane 6, slowly pull wire rope 5 up to drive chain 4, and at the same time move crane horizontally to keep wire rope 5 perpendicular to the horizontal plane. When the billet rotates 90°, stop lifting wire rope 5.

[0033] (4) If it is only necessary to rotate the billet 90°, lower the wire rope 5, and the chuck 1 will lose the upward pull and automatically detach from the billet under its own gravity. The crane 6 will then move away, taking away the chain 4 and the chuck 1, thus completing the 90° rotation operation of the billet.

[0034] If it is necessary to rotate the billet 180°, after performing step (3), as follows Figure 4 As shown, continue to move the overhead crane 6 slowly horizontally in the direction of billet overturning. When the billet begins to overturn, stop moving the overhead crane 6 horizontally and lower the wire rope 5. The chuck 1 loses the upward pulling force and will automatically detach from the billet under its own gravity. Drive away the overhead crane, taking away the chain 5 and the chuck 1, thus completing the 180° overturning operation of the billet.

Claims

1. A continuous casting billet turning device, characterized in that: It includes a clamp (1), bolts (2), U-shaped lifting rings (3), chains (4), wire ropes (5) and a crane (6). The clamp (1) is a U-shaped structure that matches the casting billet. The U-shaped lifting rings (3) are connected to the clamp (1) by bolts (2). One end of the chain (4) is connected to the U-shaped lifting rings (3), and the other end of the chain (4) is connected to the crane (6) by wire ropes (5).

2. The continuous casting billet turning device according to claim 1, characterized in that: The card head (1) is a U-shaped structure made of a steel plate. It includes an upper tooth edge (1-1), an extrusion post (1-2), and a lower tooth edge (1-3). The included angle Φ between the upper tooth edge (1-1) and the extrusion post (1-2) is greater than or equal to 80° and less than or equal to ≤90°. The included angle β between the lower tooth edge (1-3) and the extrusion post (1-2) is greater than or equal to 85° and less than or equal to 95°.

3. The continuous casting billet turning device according to claim 2, characterized in that: The length of the extrusion column (1-2) is greater than or equal to the billet thickness plus 10 mm and less than or equal to 1.4 times the billet thickness.

4. The continuous casting billet turning device according to claim 3, characterized in that: The lengths of the upper tooth edge (1-1) and the lower tooth edge (1-3) are greater than or equal to 0.7 times the thickness of the billet and less than or equal to 1.4 times the thickness of the billet.

5. A continuous casting billet turning device according to claim 4, characterized in that: The connection between the extrusion post (1-2) and the lower tooth edge (1-3) is provided with a hinge hole (1-4) that mates with the bolt (2).

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