Single-length slab continuous casting flame cutting device

Abstract

The invention discloses a single-length slab continuous casting flame cutting device which comprises a cutting vehicle track, three cutting vehicles, two sliding beams, a horizontal rotating shaft and a fixed-length dragging head, each cutting vehicle is installed on the cutting vehicle track through a vehicle body driving mechanism, and the two sliding beams are symmetrically arranged on the two sides of the three cutting vehicles and are in sliding connection with the three cutting vehicles; each cutting vehicle is provided with a displacement encoder and a brake device which correspond to the sliding beams, the two ends of the horizontal rotating shaft are rotationally connected with the front ends of the two sliding beams respectively, the sizing dragging head is fixed to the middle of the horizontal rotating shaft, a rotating shaft driving mechanism is arranged between the horizontal rotating shaft and the sliding beams, and a flame cutting gun is arranged on each cutting vehicle. The three cutting trolleys can act in a coordinated mode, the casting blank is cut at the same time, the cutting speed is greatly increased, the continuous casting plate blank can be cut into the single-length plate blank at a time on the premise that the production rhythm is not affected, the secondary cutting link is omitted, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to a continuous casting flame cutting device, which can cut a continuous casting slab into slabs (i.e. single-size slabs) of a size that meets rolling requirements at one time, and belongs to the technical field of metallurgical equipment. Background Art

[0002] At present, the flame cutting technology is mainly used to cut the slabs to a fixed length during the operation of domestic slab continuous casting machines. In order to meet the production rhythm and equipment design requirements, the cutting machine often completes the first cutting of the slab in the form of three or two times the length, and then cuts the slab into a size that meets the rolling requirements through secondary cutting. The secondary cutting process often involves the slab staying on the roller for cutting, and dynamic cutting cannot be achieved. During the secondary cutting process, the entire slab continuously dissipates heat, resulting in a significant drop in the slab temperature. The subsequent rolling process still requires heating in a heating furnace, which not only reduces the production efficiency of the slab, but also increases the production cost. Therefore, it is necessary to improve it. Summary of the invention

[0003] The purpose of the present invention is to provide a single-size slab continuous casting flame cutting device to improve the production efficiency of the slab and reduce the production cost in view of the shortcomings of the prior art.

[0004] To achieve the above object, the present invention adopts the following technical solution: A single-size slab continuous casting flame cutting device comprises a cutting car track, three cutting cars, two sliding beams parallel to the cutting car track, a horizontal rotating shaft perpendicular to the sliding beams and a fixed-length tractor, each cutting car is installed on the cutting car track through a car body driving mechanism with a braking function, two sliding beams are symmetrically arranged on both sides of the three cutting cars and are slidingly connected to the three cutting cars, each cutting car is provided with a displacement encoder and a braking device corresponding to the sliding beam, the two ends of the horizontal rotating shaft are respectively rotatably connected to the front ends of the two sliding beams, the fixed-length tractor is fixed at the middle of the horizontal rotating shaft and corresponds to the ingot at the bottom of the cutting car, a rotating shaft driving mechanism is provided between the horizontal rotating shaft and the sliding beam, and each cutting car is provided with a flame cutting gun corresponding to the ingot.

[0005] The above-mentioned single-size slab continuous casting flame cutting device, the shaft driving mechanism includes an electric telescopic rod and a handle, the handle is perpendicular to the horizontal shaft, one end of the handle is fixedly connected to the end of the horizontal shaft, and the other end is hinged to one end of the electric telescopic rod, and the other end of the electric telescopic rod is hinged to a sliding beam.

[0006] In the above-mentioned single-size slab continuous casting flame cutting device, among the three cutting cars, the rear part of the cutting car closest to the fan-shaped segment is provided with a linkage brake corresponding to the ingot at the bottom of the cutting car, and the linkage brake includes a brake cylinder, a rotating rod and a pressure block, the upper end of the rotating rod is hinged to the body of the cutting car, the pressure block is fixed to the lower end of the rotating rod and corresponds to the ingot at the bottom of the cutting car, the cylinder body of the brake cylinder is hinged to the body of the cutting car through a bracket, and the piston rod of the brake cylinder is hinged to the middle part of the rotating rod.

[0007] In the above-mentioned single-size slab continuous casting flame cutting device, each cutting car is fixed with a sliding sleeve corresponding to each sliding beam, each sliding sleeve is slidably mounted on the corresponding sliding beam, and sliding wheel groups are arranged on the upper and lower parts of the sliding sleeve, and the sliding wheel groups are in sliding contact with the sliding beam.

[0008] In the above-mentioned single-size slab continuous casting flame cutting device, the displacement encoder is installed on the sliding sleeve, and the measuring end of the displacement encoder is in contact with the sliding beam.

[0009] In the above-mentioned single-size slab continuous casting flame cutting device, the braking device is an electrically controlled telescopic rod, which is fixed on the cutting vehicle, and a brake block corresponding to the sliding beam is fixed to the telescopic end of the electrically controlled telescopic rod.

[0010] The above-mentioned single-size slab continuous casting flame cutting device has braking devices on both sides of the three cutting vehicles.

[0011] The three cutting vehicles of the present invention can coordinate their actions under the control of the controller and cut the ingots at the same time, which greatly improves the cutting speed. The continuous casting slabs can be cut into single-size slabs at one time without affecting the production rhythm, eliminating the secondary cutting process, thereby improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Top view of the .

[0014] The numbers in the figure are as follows: 1. first cutting car, 2. second cutting car, 3. third cutting car, 4. brake cylinder, 5. sliding beam, 6. car body driving mechanism, 7. cutting car track, 8. displacement encoder, 9. sliding sleeve, 10. braking device, 11. flame cutting gun, 12. fixed-length tractor, 13. electric telescopic rod, 14. ingot, 15. sliding wheel set, 16. rotating handle, 17. horizontal rotating shaft, 18. rotating rod, 19. pressing block. DETAILED DESCRIPTION

[0015] The present invention provides a single-size slab continuous casting flame cutting device, which effectively solves the problem that the prior art can only complete triple-size or double-size cutting in one cutting but cannot perform single-size cutting. The ingot can be cut into a size that meets rolling requirements with only one cutting, and the ingot does not need to be left standing on a secondary cutting roller waiting for cutting, which reduces heat loss of the ingot, thereby improving the production efficiency of the ingot and reducing production costs.

[0016] See also Figure 1 and Figure 2 The present invention mainly includes three cutting vehicles, a linkage brake, a sliding beam 5, a vehicle body driving mechanism 6, a cutting vehicle track 7, a displacement encoder 8, a sliding sleeve 9, a braking device 10, a flame cutting gun 11, a fixed-length tractor 12, a horizontal rotating shaft 17, a rotating shaft driving mechanism and a sliding wheel group 15, wherein the rotating shaft driving mechanism includes an electric telescopic rod 13 and a rotating handle 16.

[0017] The three cutting carts are the first cutting cart 1, the second cutting cart 2 and the third cutting cart 3, which are located above the ingot 14 and are installed on the cutting cart track 7 in sequence along the opposite direction of the running direction of the ingot 14. The first cutting cart 1, the second cutting cart 2 and the third cutting cart 3 are all slidably connected to the sliding beam 5. The front end of the sliding beam 5 (the end away from the fan-shaped segment is the front end) is provided with a horizontal rotating shaft 17, a fixed-length tractor 12 and a rotating shaft driving mechanism. The cutting cart closest to the fan-shaped segment (i.e., the third cutting cart 3) is provided with a linkage brake at the rear.

[0018] The linkage brake includes a brake cylinder 4, a rotating rod 18 and a pressure block 19. The upper end of the rotating rod 18 is hinged to the body of the cutting vehicle (i.e., the third cutting vehicle 3) closest to the sector. The pressure block 19 is fixed to the lower end of the rotating rod 18 and corresponds to the ingot 14 at the lower part of the cutting vehicle. The cylinder body of the brake cylinder 4 is hinged to the body of the cutting vehicle closest to the sector through a bracket, and the piston rod of the brake cylinder 4 is hinged to the middle part of the rotating rod 18. When the rotating rod 18 is driven to rotate by the brake cylinder 4, the pressure block 19 can be lifted or pressed on the ingot 14. When the pressure block 19 is pressed on the ingot 14, the friction between the pressure block 19 and the ingot 14 can make the cutting vehicle closest to the sector move synchronously with the ingot 14.

[0019] Both sides of the first cutting car 1, the second cutting car 2 and the third cutting car 3 are provided with sliding beams 5 parallel to the cutting car tracks 7 and sliding sleeves 9 corresponding to the sliding beams 5. The heights of the sliding sleeves 9 are consistent. Each sliding sleeve 9 is slidably sleeved on the outside of the corresponding sliding beam 5 (that is, the sliding beam 5 slides through the corresponding sliding sleeve 9). The upper and lower parts of the sliding sleeve 9 are provided with sliding wheel groups 15, and the sliding wheel groups 15 are in sliding contact with the sliding beam 5.

[0020] The first cutting car 1, the second cutting car 2 and the third cutting car 3 are all provided with a displacement encoder 8, which is installed on the outside of the sliding sleeve 9, and the measuring end of the displacement encoder 8 is in contact with the sliding beam 5. The displacement encoder 8 is used to measure the displacement between the sliding sleeve 9 and the cutting car and the sliding beam 5. The controller can obtain the distance between the fixed-length tractor 12 and the flame cutting gun 11 on the first cutting car 1, the distance between the flame cutting gun 11 on the second cutting car 2 and the flame cutting gun 11 on the first cutting car 1, and the distance between the flame cutting gun 11 on the third cutting car 3 and the flame cutting gun 11 on the second cutting car 2 according to the displacement between each cutting car and the sliding beam 5.

[0021] Braking devices 10 are provided on both sides of the first cutting vehicle 1, the second cutting vehicle 2 and the third cutting vehicle 3. The heights of the braking devices 10 are consistent and the braking devices 10 correspond to the sliding beam 5. The braking devices 10 use an electric telescopic rod, which is fixed on the cutting vehicle, and a brake block corresponding to the sliding beam 5 is fixed at the telescopic end of the electric telescopic rod. When the brake block at the telescopic end of the electric telescopic rod presses against the sliding beam 5, the cutting vehicle and the sliding beam 5 move synchronously by relying on the friction between the brake block and the sliding beam 5.

[0022] The shaft driving mechanism includes an electric telescopic rod 13 and a handle 16. The horizontal shaft 17 is perpendicular to the cutting vehicle track 7 and the sliding beam 5. The two ends of the horizontal shaft 17 are respectively connected to the rotation of the two sliding beams 5. The fixed-length tractor 12 is fixed in the middle of the horizontal shaft 17. The handle 16 is perpendicular to the horizontal shaft 17. One end of the handle 16 is fixedly connected to the end of the horizontal shaft 17, and the other end is hinged to one end of the electric telescopic rod 13. The other end of the electric telescopic rod 13 is hinged to a sliding beam 5. The horizontal shaft 17 connects the two sliding beams 5 together so that the two move synchronously. The electric telescopic rod 13 can drive the horizontal shaft 17 to rotate through the handle 16. When the horizontal shaft 17 rotates, it drives the fixed-length tractor 12 to rotate, so that the fixed-length tractor 12 is lowered to contact the end of the ingot 14 or lifted (rotated to the top of the ingot 14) to allow the ingot 14 to pass from below.

[0023] The first cutting vehicle 1, the second cutting vehicle 2 and the third cutting vehicle 3 are all provided with a vehicle body driving mechanism 6, and the vehicle body driving mechanism 6 has a braking function.

[0024] The present invention is provided with an intelligent controller, and the electric telescopic rod 13, the brake cylinder 4, the displacement encoder 8, the brake device 10 and the vehicle body driving mechanism 6 are all connected to the controller.

[0025] The working process of the present invention is as follows: The initial positions of the first cutting car 1, the second cutting car 2 and the third cutting car 3 are on the side close to the fan-shaped segment, and the sliding beam 5 is also on the side close to the fan-shaped segment. After the ingot 14 exits the fan-shaped segment, the rotating shaft driving mechanism on the sliding beam 5 drives the cut-to-length tug 12 to be lowered, and the car body driving mechanism 6 on the first cutting car 1, the second cutting car 2 and the third cutting car 3 is in a braking state, and the braking device 10 on the first cutting car 1, the second cutting car 2 and the third cutting car 3 is in a released state. When the ingot 14 contacts the cut-to-length tug 12 on the sliding beam 5, the ingot 1 4 drives the fixed-length tug 12 on the sliding beam 5 to move in the pouring direction, and the displacement encoder 8 measures the displacement of the sliding beam 5. When the distance between the fixed-length tug 12 on the sliding beam 5 and the flame cutting gun 11 on the first cutting vehicle 1 and the length of the corresponding ingot 14 reach the cutting size, the vehicle body driving mechanism 6 on the first cutting vehicle 1 is in a released state, and the braking device 10 on the first cutting vehicle 1 is in a braking state, so that the first cutting vehicle 1 and the ingot 14 move synchronously, and the flame cutting gun 11 on the first cutting vehicle 1 starts the cutting operation. When the distance between the flame cutting gun 11 on the second cutting car 2 and the flame cutting gun 11 on the first cutting car 1 and the corresponding length of the ingot 14 reaches the cutting size, the car body driving mechanism 6 on the second cutting car 2 is in a released state, and at the same time, the braking device 10 on the second cutting car 2 is in a braking state, so that the second cutting car 2 and the ingot 14 move synchronously, and the flame cutting gun 11 on the second cutting car 2 starts the cutting operation. When the distance between the flame cutting gun 11 on the third cutting car 3 and the flame cutting gun 11 on the second cutting car 2 and the corresponding length of the ingot 14 reach the cutting size, the car body driving mechanism 6 on the third cutting car 3 is in a released state, and at the same time, the braking device 10 on the third cutting car 3 is in a braking state, and the linkage brake on the third cutting car 3 is pressed on the surface of the ingot 14, so that the third cutting car 3 and the ingot 14 move synchronously, and the flame cutting gun 11 on the third cutting car 3 starts the cutting operation, and the shaft driving mechanism on the sliding beam 5 drives the fixed-length tractor 12 to lift up; After the flame cutting gun 11 on the cutting car 1 completes the cutting operation, the brake device 10 on the first cutting car 1 is in a released state, and the first cutting car 1 moves toward the near-length tractor 12. After reaching the position, the brake device 10 on the first cutting car 1 is in a braking state. When the flame cutting guns 11 on the second cutting car 2 and the third cutting car 3 complete the cutting operation, the linkage brake on the third cutting car 3 is lifted from the surface of the ingot 14, and the brake devices 10 on the second cutting car 2 and the third cutting car 3 are in a released state. The cut ingot 14 quickly passes through the roller conveyor under the length tractor 12. After the cut ingot 14 passes through the roller conveyor under the length tractor 12, the shaft driving mechanism on the sliding beam 5 drives the length tractor 12 to be lowered, and the first cutting car 1, the second cutting car 2, and the third cutting car 3 move to one side of the near-near sector at the same time, and the first cutting car 1, the second cutting car 2, and the third cutting car 3 return to the initial position. The first cutting cycle ends, and then the second cutting cycle begins.

[0026] The present invention completes the cutting of the ingot size in one cutting process, reduces the static heat dissipation of the ingot in the secondary cutting process, saves the heating time of the ingot for the subsequent rolling process, saves the energy consumption caused by heating the ingot, and reduces the production cost. The device has a simple structure and is easy to maintain, with low subsequent maintenance costs, and can also save the investment in secondary cutting equipment and site investment.

Claims

1. A single-size slab continuous casting flame cutting device, characterized in that: The invention comprises a cutting vehicle track (7), three cutting vehicles, two sliding beams (5) parallel to the cutting vehicle track (7), a horizontal rotating shaft (17) perpendicular to the sliding beams (5), and a cut-to-length tractor (12), each cutting vehicle being mounted on the cutting vehicle track (7) via a vehicle body driving mechanism (6) with a braking function, two sliding beams (5) being symmetrically arranged on both sides of the three cutting vehicles and being slidably connected to the three cutting vehicles, each cutting vehicle being provided with a displacement encoder (8) and a braking device (10) corresponding to the sliding beams (5), two ends of the horizontal rotating shaft (17) being rotatably connected to the front ends of the two sliding beams (5), the cut-to-length tractor (12) being fixed at the middle of the horizontal rotating shaft (17) and corresponding to the ingot (14) at the bottom of the cutting vehicle, a rotating shaft driving mechanism being provided between the horizontal rotating shaft (17) and the sliding beams (5), and each cutting vehicle being provided with a flame cutting gun (11) corresponding to the ingot (14).

2. The single-size slab continuous casting flame cutting device according to claim 1 is characterized in that: The rotating shaft driving mechanism comprises an electric telescopic rod (13) and a rotating handle (16), wherein the rotating handle (16) is perpendicular to the horizontal rotating shaft (17), one end of the rotating handle (16) is fixedly connected to the end of the horizontal rotating shaft (17), and the other end of the rotating handle (16) is hinged to one end of the electric telescopic rod (13), and the other end of the electric telescopic rod (13) is hinged to a sliding beam (5).

3. A single-size slab continuous casting flame cutting device according to claim 1 or 2, characterized in that: Among the three cutting vehicles, a cutting vehicle closest to the fan-shaped segment is provided at the rear of a linkage brake corresponding to the ingot (14) at the bottom of the cutting vehicle, the linkage brake comprising a brake cylinder (4), a rotating rod (18) and a pressure block (19), the upper end of the rotating rod (18) being hinged to the body of the cutting vehicle, the pressure block (19) being fixed to the lower end of the rotating rod (18) and corresponding to the ingot (14) at the bottom of the cutting vehicle, the cylinder body of the brake cylinder (4) being hinged to the body of the cutting vehicle through a bracket, and the piston rod of the brake cylinder (4) being hinged to the middle part of the rotating rod (18).

4. The single-size slab continuous casting flame cutting device according to claim 3 is characterized in that: A sliding sleeve (9) corresponding to each sliding beam (5) is fixed on each cutting vehicle, and each sliding sleeve (9) is slidably mounted on the corresponding sliding beam (5). A sliding wheel group (15) is provided on the upper and lower parts of the sliding sleeve (9), and the sliding wheel group (15) is in sliding contact with the sliding beam (5).

5. The single-size slab continuous casting flame cutting device according to claim 4 is characterized in that: The displacement encoder (8) is mounted on the sliding sleeve (9), and a measuring end of the displacement encoder (8) is in contact with the sliding beam (5).

6. The single-size slab continuous casting flame cutting device according to claim 5 is characterized in that: The braking device (10) is an electrically controlled telescopic rod, which is fixed on the cutting vehicle, and a braking block corresponding to the sliding beam (5) is fixed to the telescopic end of the electrically controlled telescopic rod.

7. The single-size slab continuous casting flame cutting device according to claim 6 is characterized in that: Braking devices (10) are provided on both sides of the three cutting vehicles.

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