Continuous casting billet overturning device and method

Abstract

The invention 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 clamping head (1) is of a U-shaped structure formed by cutting a steel plate, the included angle phi between the upper tooth edge (1-1) and the extrusion column (1-2) is larger than or equal to 80 degrees and smaller than or equal to 90 degrees, and the included angle beta between the lower tooth edge (1-3) and the extrusion column (1-2) is larger than or equal to 85 degrees and smaller than or equal to 95 degrees. The casting blank overturning device has the beneficial effects that casting blank overturning can be achieved, the structure is simple, and the blank overturning efficiency is high.

Description

Technical Field

[0001] The invention relates to a continuous casting billet turning device and a billet turning method, belonging to the technical field of steelmaking continuous casting in the metallurgical industry. Background Art

[0002] Continuous casting is the main production process of steelmaking now, and most steel enterprises in my country have achieved full continuous casting steelmaking production. Due to the influence of steel type and process, some continuous casting billets will have certain quality defects on the surface, and the continuous casting billets must be inspected and cleaned. When it is necessary to inspect and clean the quality defects of the lower surface of the continuous casting billet, it is necessary to turn the continuous casting billet, but due to the large length, width and weight of the continuous casting billet, special equipment is required to turn the continuous casting billet. The traditional hydraulic slab billet turning machine has a complex structure, large investment, high operating costs, slow turning speed, many faults, and complex operation, which greatly affects the production of continuous casting billets. Other billet turning tools use clamps or steel ropes to tie, rely on cranes and the billet's own gravity to complete the turning, which improves efficiency to a certain extent, but the installation and removal of the billet turning tools take a lot of time, affecting the turning efficiency, and ultimately leading to a decrease in steelmaking production efficiency. In order to improve the turning efficiency, some manufacturers even use crowbars for manual turning operations, which is labor-intensive and dangerous for workers. Summary of the invention

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

[0004] The technical solution of the present invention is: A continuous casting billet turning device comprises a clamp, bolts, a U-shaped lifting ring, a chain, a steel wire rope and a crane. The clamp is a U-shaped structure matched with the casting 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 steel wire rope.

[0005] The chuck is a U-shaped structure formed by cutting a steel plate, which includes an upper tooth edge, an extrusion column and a lower tooth edge. The angle Φ between the upper tooth edge and the extrusion column is greater than or equal to 80° and less than or equal to ≤90°, and the angle β between the lower tooth edge and the extrusion column is greater than or equal to 85° and less than or equal to 95°.

[0006] The length of the squeeze column is greater than or equal to the thickness of the ingot plus 10 mm, and less than or equal to 1.4 times the thickness of the ingot.

[0007] The length of the upper tooth edge and the lower tooth edge is greater than or equal to 0.7 times the thickness of the casting billet and less than or equal to 1.4 times the thickness of the casting billet.

[0008] A hinge hole matched with a bolt is provided at the connection between the extrusion column and the lower tooth edge.

[0009] The beneficial effects of the present invention are: it can realize turning over one or more casting billets, and can also realize turning over the casting billets by 90 degrees or 180 degrees, and it has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the present invention; Figure 2 It is a schematic diagram of the clamp head of the present invention; Figure 3 This is a schematic diagram of the casting before flipping of the present invention; Figure 4 This is a schematic diagram of the casting blank of the present invention being turned over 90°; In the figure: 1. clamp; 2. bolt; 3. U-shaped lifting ring; 4. chain; 5. wire rope; 6. overhead crane; 7. casting billet; 8. casting billet; 1-1, upper tooth edge; 1-2, extrusion column; 1-3, lower tooth edge; 1-4, hinge hole. DETAILED DESCRIPTION

[0011] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0012] Refer to the attached Figure 1-4 A continuous casting billet turning device comprises 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 matched with the casting billet. The U-shaped lifting ring 3 is connected to the clamp 1 through 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 through the wire rope 5.

[0013] In this embodiment, if Figure 1 As shown, the blank turning device is composed of a clamp 1, a bolt 2, a U-shaped lifting ring 3, a chain 4, a steel wire rope 5e a crane 6, etc., wherein: like Figure 2 As shown, the chuck 1 is made of a steel plate by cutting, and it is a U-shaped structure consisting of an upper tooth edge 1-1, a squeeze column 1-2 and a lower tooth edge 1-3, wherein the length dimension of the upper tooth edge 1-1 is a, the length dimension of the lower tooth edge 1-3 is b, the length dimension of the squeeze column 1-2 is c, and the thickness of the ingot is δ.

[0014] In order to make it easy for the chuck 1 to hook the ingot, δ+10mm≤c≤1.4*δ. If the value of c is too large, the chuck 1 will occupy a large operating space under the ingot.

[0015] 0.7*δ≤b≤1.4*δ, if the length b of the lower tooth edge 1-2 of the chuck 1 is too small, the chuck 1 will be separated from the billet at the beginning of lifting; if the length b of the lower tooth edge 1-2 of the chuck 1 is too large, the chuck 1 will not be able to automatically separate from the billet after the billet is flipped.

[0016] 0.7*δ≤a≤b≤1.4*δ, the length a of the upper tooth edge 1-1 of the chuck 1 is approximately equal to the length b of the lower tooth edge 1-2 of the chuck 1, and a may be slightly smaller than b.

[0017] like Figure 2 As shown, the angle Φ between the upper tooth edge 1-1 and the squeeze column 1-2, and the angle β between the lower tooth edge 1-3 and the squeeze column 1-2. In order to ensure that the chuck 1 is easy to establish self-locking with the billet when the lifting begins, and to ensure that the chuck 1 is smoothly separated from the billet and automatically unhooked after the second flip of the billet by 90°, 80°≤Φ≤90°, 85°≤β≤95°.

[0018] like Figure 2 As shown, the plumb bob position of the hinge hole 1-4 on the clamp head 1 is outside the lower tooth edge 1-3, m≥25mm. The horizontal position of the hinge hole 1-4 on the clamp head 1 is outside the squeeze column 1-2, n≥25mm. This design can increase the self-locking stability between the clamp head 1 and the billet, so that the clamp head 1 can easily establish a self-locking relationship with the billet when the lifting starts, that is, when the chain tension is small, the clamp head 1 and the billet 8 are engaged together, and the clamp head 1 and the billet 8 remain relatively still.

[0019] like Figure 1 , 3 As shown, the device can perform the turning operation on one or two or more ingots at the same time, and the positive pressure between the two ingots is provided by the clamping head 1 and the chain 4 located on the left and right sides of the ingot.

[0020] like Figure 3 As shown, when turning the billet, the chuck 1 is first hooked on the billet so that the squeeze column 1-2 of the chuck 1 is close to the side of the billet, and then the overhead crane 6 is opened to pull up the wire rope 5, and the wire rope 5 drives the chain 4. The chain 4 drives the U-shaped lifting ring 3, and the chuck 1 rotates to the Figure 1 The chuck 1 and the billet are in the Figure 2 The position shown is self-locking, that is, no matter how large the pulling force is from the U-shaped lifting ring 3, the chuck 1 still holds the casting blank. Figure 2 The position shown is in a relatively static state.

[0021] The crane 6 pulls the wire rope 5 upward to drive the chain 4 upward. The ingots 7 and 8 turn 90 degrees under their own weight and the pulling force of the chain 4 and stand vertically on the pad under the original ingot. After the ingots 7 and 8 stand vertically on the pad under the original ingot, the crane 6 stops pulling the wire rope upward. Figure 4As shown, the overhead crane is moved horizontally in the direction of the billet tipping over, and the billet is turned over 90° for the second time driven by the chain 4. When the driver of the overhead crane 6 finds that the billets 7 and 8 begin to turn over 90° for the second time, the horizontal movement is stopped and the wire rope 5 is lowered. The clamping head 1 loses the upward pulling force and moves downward and separates from the billet under the action of its own gravity.

[0022] When turning the blank, follow the steps below: (1) Connect the clamp 1 and the chain 4 with bolts 2 and U-shaped eyelets 3; (2) Pass the chain 4 and the clamp 1 through the billet from below, and hook the clamp 1 onto the billet so that the squeeze columns 1-2 of the clamp are close to the side of the billet, as shown in the figure. Figure 3 As shown, the chain 4 is located below the 1 / 2 line in the length direction of the billet, and the chain 4 is perpendicular to the long side of the billet, so that the shape and volume of the billet on both sides of the chain 4 are nearly equal; (3) Connect the chain 4 and the wire rope 5, start the overhead crane 6, slowly pull up the wire rope 5 to drive the chain 4, and at the same time move the overhead crane horizontally to keep the wire rope 5 perpendicular to the horizontal plane. When the ingot is turned 90°, stop lifting the wire rope 5; (4) If only the ingot needs to be turned over 90°, the wire rope 5 is lowered, and the chuck 1 loses the upward pulling force and automatically detaches from the ingot under the action of its own gravity. The overhead crane 6 is driven away to take away the chain 4 and the chuck 1, thus completing the 90° turning operation of the ingot. If the ingot needs to be flipped 180°, after completing step (3), Figure 4 As shown, the overhead crane 6 continues to move horizontally slowly in the direction of the billet tipping over. When it is found that the billet begins to tip over, the horizontal movement of the overhead crane 6 is stopped, and the wire rope 5 is lowered. The chuck 1 loses the upward pulling force and automatically detaches from the billet under the action of its own gravity. The overhead crane is driven away to take away the chain 5 and the chuck 1, thus completing the 180° flipping operation of the billet.

Claims

1. A continuous casting billet turning device, characterized in that: The invention comprises a clamp (1), a bolt (2), a U-shaped lifting ring (3), a chain (4), a steel wire rope (5) and a crane (6); the clamp (1) is a U-shaped structure matched with the ingot; the U-shaped lifting ring (3) is connected to the clamp (1) via a 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) via a steel wire rope (5).

2. The continuous casting billet turning device according to claim 1, characterized in that: The clamping head (1) is a U-shaped structure formed by cutting a steel plate, comprising an upper tooth edge (1-1), a squeeze column (1-2) and a lower tooth edge (1-3), wherein an angle Φ between the upper tooth edge (1-1) and the squeeze column (1-2) is greater than or equal to 80° and less than or equal to ≤90°, and an angle β between the lower tooth edge (1-3) and the squeeze column (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 squeeze column (1-2) is greater than or equal to the thickness of the ingot plus 10 mm, and less than or equal to 1.4 times the thickness of the ingot.

4. The continuous casting billet turning device according to claim 3 is characterized in that: The lengths of the upper tooth edge (1-1) and the lower tooth edge (1-2) are greater than or equal to 0.7 times the thickness of the casting billet and less than or equal to 1.4 times the thickness of the casting billet.

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

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