A device for quick disassembly of air vent ducts

Abstract

This utility model provides a device for quickly disassembling tuyere ducts, including a tensioning device for fixing the duct and welding it to the furnace shell. The device also includes a base frame, on which a first gantry frame and a second gantry frame are spaced apart. A rotating rod is horizontally rotatable between the first and second gantry frames, with both ends of the rotating rod extending outwards. A drive motor is fixedly connected to the base frame on the lower side of the first gantry frame. A sprocket is fitted onto the output shaft of the drive motor and the rotating rod, respectively, and the two sprockets are connected by a ring chain. A sleeve is fixedly connected to the end of the rotating rod on the side of the second gantry frame away from the first gantry frame. A nut matching the sleeve is welded to the end of the screw of the tensioning device. A controller is provided on the base frame, and the drive motor is connected to the controller via a signal line. This device has a novel and reasonable structural design, is simple to operate, and saves time and effort. It not only reduces the labor intensity of blast furnace workers but also saves time for changing tuyeres and improves work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of blast furnace smelting technology, specifically relating to a device that allows for quick disassembly of tuyeres and ducts. Background Technology

[0002] The tuyeres are one of the most important pieces of equipment in the blast furnace ironmaking process. Their main function is to guide the blast air into the blast furnace, while also stabilizing the hearth temperature and improving production efficiency. To ensure normal blast furnace production, the tuyeres are usually disassembled and replaced periodically. However, when replacing a blast furnace tuyer, the duct in front of the tuyer must first be removed. Normally, the duct is fixed by a tensioning device welded to the furnace shell. Disassembling the duct requires manual labor, which involves using a sledgehammer to knock down the bolts of the tensioning device to loosen it before disassembly. This process is labor-intensive, time-consuming, and labor-intensive.

[0003] In view of this, and in order to solve the above-mentioned technical problems, this utility model proposes a device for quickly disassembling tuyeres and ducts that features a novel and reasonable structural design, simple operation, and saves time and effort. This device not only reduces the labor intensity of blast furnace operators but also saves time when replacing tuyeres, thereby improving work efficiency. Utility Model Content

[0004] This utility model provides a device for quickly disassembling air vents and ducts. The device features a novel and reasonable structural design, simple operation, and saves time and effort. The specific solution is as follows: A device for quick disassembly of ductwork includes a tensioning device for fixing the ductwork and welding it to the furnace shell. The device also includes a base frame, on which a first gantry frame and a second gantry frame are spaced apart. A rotating rod is horizontally rotatable between the first and second gantry frames, with both ends of the rotating rod extending outwards. A drive motor is fixedly connected to the base frame below the first gantry frame. A sprocket is fitted onto the output shaft of the drive motor and the rotating rod, respectively. The two sprockets are connected by a ring chain. A sleeve is fixedly connected to the end of the rotating rod on the side of the second gantry frame away from the first gantry frame. A nut matching the sleeve is welded to the end of the screw of the tensioning device. A controller is provided on the base frame, and the drive motor is connected to the controller via a signal line.

[0005] Furthermore, slide rails are fixedly connected to opposite sides of the upper surface of the base frame along their length, and elongated grooves are slidably provided on the two slide rails. A connecting plate is fixedly connected between the two grooves, and the drive motor is fixedly connected to the middle of the upper surface of the connecting plate. The two columns of the first gantry frame are fixedly connected to the two grooves respectively. A fixed sleeve is horizontally inserted through the middle of the first gantry frame and sleeved on the rotating rod. The fixed sleeve is provided with a deep groove bearing suitable for the rotating rod.

[0006] Furthermore, a push cylinder is fixedly connected to the base frame on one side of the connecting plate. The output end of the push cylinder is fixedly connected to the connecting plate, and the push cylinder is connected to the controller via a signal line.

[0007] Furthermore, hooks are rotatably connected to the opposite sides of the rotating rod on one side of the sleeve.

[0008] Furthermore, the annular chain is provided with a protective cover on the side away from the first gantry frame, and the protective cover is detachably connected to the first gantry frame by screws.

[0009] Furthermore, the second gantry is horizontally perforated in the middle with a sliding sleeve suitable for the rotating rod to pass through.

[0010] Furthermore, the first gantry frame and the two sliding grooves, and the second gantry frame and the base frame are respectively welded with reinforcing ribs on both sides.

[0011] The beneficial effects of this utility model are: This utility model discloses a device for quickly disassembling tuyeres and ducts. It comprises two gantry frames, a sleeve, a slide rail, a drive motor, a hook, a pushing cylinder, and a nut welded to the end of the tensioning device screw. When disassembling the duct, the sleeve is fitted onto the nut, and the drive motor is activated. The drive motor drives the chain to rotate, which in turn rotates the rotating rod. The hook engages with the fixing block on the screw, and the pushing cylinder pushes the first gantry frame to move along the slide rail, gradually removing the tensioning device screw and ultimately disassembling the duct. This saves a significant amount of time for subsequent duct disassembly, and is simple to operate, saving time and effort. It not only reduces the labor intensity of blast furnace workers but also saves time when changing tuyeres, improving work efficiency. Attached Figure Description

[0012] Figure 1 and Figure 2 This is a schematic diagram of the structure of this utility model.

[0013] Explanation of reference numerals in the attached drawings: 1. Base frame; 2. First gantry frame; 3. Second gantry frame; 4. Rotating rod; 5. Drive motor; 6. Sprocket; 7. Ring chain; 8. Sleeve; 9. Nut; 10. Slide rail; 11. Slide groove; 12. Connecting plate; 13. Fixing sleeve; 14. Push cylinder; 15. Hook; 15. Protective cover; 16. Slide sleeve; 17. Reinforcing rib; 18. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] See Figure 1-2A device for quick disassembly of ductwork includes a tensioning device welded to the furnace shell and a base frame 1. A first gantry frame 2 and a second gantry frame 3 are spaced apart on the base frame 1. A rotating rod 4 is horizontally rotatable between the first gantry frame 2 and the second gantry frame 3. A horizontal connecting plate is connected to the upper part of each of the two gantry frames, and the rotating rod 4 is horizontally rotatably connected to the two horizontal connecting plates. Both ends of the rotating rod 4 extend outwards. A drive motor 5 is fixedly connected to the base frame 1 below the first gantry frame 2. A sprocket 6 is fitted onto the output shaft of the drive motor 5 and the rotating rod 4, respectively. The two sprockets 6 are connected by a ring chain 7. A sleeve 8 is fixedly connected to the end of the rotating rod 4 on the side of the second gantry frame 3 away from the first gantry frame 2. A nut 9 matching the sleeve 8 is welded to the end of the screw of the tensioning device, wherein the internal length of the sleeve 8 is greater than the length of the nut 9. A controller is provided on the base frame 1, and the drive motor is connected to the controller via a signal line.

[0016] The preferred base frame 1 has slide rails 10 fixedly connected to opposite sides of its upper surface along its length. Long strip-shaped slide grooves 11 are slidably provided on the two slide rails 10. A connecting plate 12 is fixedly connected between the two slide grooves 11. The drive motor 5 is fixedly connected to the middle of the upper surface of the connecting plate 12. The two columns of the first gantry frame 2 are fixedly connected to the two slide grooves 11 respectively. A fixing sleeve 13 is horizontally inserted through the middle of the first gantry frame 2 and sleeved on the rotating rod 4. The fixing sleeve 13 is provided with a deep groove bearing suitable for the rotating rod 4. The deep groove bearing can not only ensure the stability of the rotating rod 4 when the first gantry frame 2 slides along the slide rails 10, but also ensure better rotation of the rotating rod 4.

[0017] A push cylinder 14 is fixedly connected to the base frame 1 on one side of the preferred connecting plate 12. The output end of the push cylinder 14 is fixedly connected to the connecting plate 12. The push cylinder 14 is connected to the controller through a signal line. The push cylinder 14 is designed to provide power when the first gantry 2 moves, which saves effort.

[0018] Hooks 15 are rotatably connected to the opposite sides of the rotating rod 4 on one side of the preferred sleeve 8. The hooks 15 are designed to hook the fixing block on the tensioning device screw and remove the screw when the first gantry 2 moves, so that the air duct can be disassembled and the air outlet can be disassembled.

[0019] The preferred ring chain 7 is provided with a protective cover 16 on the side away from the first gantry 2 for greater safety. The protective cover 16 is detachably connected to the first gantry 2 by screws.

[0020] The preferred second gantry 3 has a horizontally penetrating sleeve 17 that is suitable for the rotating rod 4 to pass through.

[0021] The preferred first gantry 2 and the two sliding grooves 11 are respectively welded with reinforcing ribs 18 on both sides of the second gantry 3 and the base frame 1, making the first gantry 2 and the second gantry 3 more stable.

[0022] The working principle of this utility model is as follows: First, the base frame 1 is placed behind the tensioning device and the sleeve 8 is fitted onto the nut 9 on the screw. Then, the two hooks 15 are hooked onto the fixing block of the screw, and the push cylinder 14 is activated to push the connecting plate 12, thereby tightening the two hooks 15. Then, the drive motor 5 is controlled to rotate back and forth to loosen the screw of the tensioning device. After it is loosened, the drive motor 5 is controlled to rotate forward, so that the screw can rotate and be gradually disassembled. At this time, as the screw is gradually removed, the push cylinder 14 is activated, which pushes the slide groove 11 connected to the connecting plate 12 to slide along the slide rail 10. At this time, the push cylinder 14 not only plays the role of holding the screw, but also provides auxiliary power when the drive motor 5 is disassembled. Thus, the screw of the tensioning device can be gradually disassembled, thereby realizing the rapid disassembly of the air duct, which saves a lot of time for subsequent disassembly of the air duct. Moreover, the operation is simple, time-saving and labor-saving, which not only reduces the labor intensity of the blast furnace front workers, but also saves the time for changing the tuyeres and improves work efficiency.

[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for quick disassembly of an air duct, comprising a tensioning device for fixing the air duct and welding it to the furnace shell, characterized in that: The device also includes a base frame (1), on which a first gantry frame (2) and a second gantry frame (3) are spaced apart. A rotating rod (4) is horizontally rotatable between the first gantry frame (2) and the second gantry frame (3). The two ends of the rotating rod (4) extend outward respectively. A drive motor (5) is fixedly connected to the base frame (1) on the lower side of the first gantry frame (2). A sprocket (6) is sleeved on the output shaft of the drive motor (5) and the rotating rod (4). The two sprockets (6) are connected by a ring chain (7). A sleeve (8) is fixedly connected to the end of the rotating rod (4) on the side of the second gantry frame (3) away from the first gantry frame (2). A nut (9) matching the sleeve (8) is welded to the end of the screw of the tensioning device. A controller is provided on the base frame (1). The drive motor is connected to the controller through a signal line.

2. The device for quickly disassembling air vent ducts according to claim 1, characterized in that: The upper surface of the base frame (1) is fixed with slide rails (10) on both sides along its length. The two slide rails (10) are respectively provided with long strip grooves (11). A connecting plate (12) is fixed between the two slide grooves (11). The drive motor (5) is fixed in the middle of the upper surface of the connecting plate (12). The two columns of the first gantry frame (2) are respectively fixed on the two slide grooves (11). A fixing sleeve (13) is horizontally inserted in the middle of the first gantry frame (2) and sleeved on the rotating rod (4). The fixing sleeve (13) is provided with a deep groove bearing suitable for the rotating rod (4).

3. The device for quickly disassembling air vent ducts according to claim 2, characterized in that: A push cylinder (14) is fixedly connected to the base frame (1) on one side of the connecting plate (12). The output end of the push cylinder (14) is fixedly connected to the connecting plate (12). The push cylinder (14) is connected to the controller through a signal line.

4. The device for quickly disassembling air vent ducts according to claim 3, characterized in that: Hooks (15) are rotatably connected to the opposite sides of the rotating rod (4) on one side of the sleeve (8).

5. The device for quickly disassembling air vent ducts according to claim 1, characterized in that: The annular chain (7) is provided with a protective cover (16) on the side away from the first gantry frame (2), and the protective cover (16) is detachably connected to the first gantry frame (2) by screws.

6. The device for quickly disassembling air vent ducts according to claim 1, characterized in that: The second gantry (3) has a horizontally penetrating sleeve (17) suitable for the rotating rod (4) to pass through.

7. The device for quickly disassembling air vent ducts according to claim 1, characterized in that: The first gantry (2) and the two slides (11) and the second gantry (3) and the base frame (1) are respectively welded with reinforcing ribs (18).

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