Efficient energy-saving heating furnace device for hot-rolled seamless steel pipe

Abstract

The utility model discloses an efficient energy-saving heating furnace device for hot-rolled seamless steel tubes, which relates to the technical field of seamless steel tube production and comprises a workbench and a heating furnace body, a fixing frame is fixedly mounted on the workbench, threaded rods are rotatably mounted in two sides of the fixing frame, and first worm gears are fixedly mounted at the top ends of the two threaded rods. A first driving shaft is rotationally installed at the top end of the fixing frame, first worms are fixedly installed at the two ends of the first driving shaft respectively, a first motor is fixedly installed on one side of the top end of the fixing frame, and supporting wheels are rotationally installed at the two ends of the upper surface of the workbench respectively. The threaded rod is driven to rotate through the corresponding transmission assembly, the threaded rod drives the heating furnace body to be adjusted in a lifting mode in the fixing frame, a steel billet and a heating channel of the heating furnace body are located on the same circle center shaft, and therefore the steel billet can be heated more evenly.

Description

Technical Field

[0001] This utility model relates to the field of seamless steel pipe production technology, specifically to a high-efficiency and energy-saving heating furnace device for hot-rolled seamless steel pipes. Background Technology

[0002] Seamless steel pipe is a type of steel pipe without weld seams on its surface, formed by piercing a single round steel bar. Based on the production method, seamless steel pipes can be classified into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and jacking pipes, etc. According to the cross-sectional shape, seamless steel pipes are divided into round and irregular shapes. Irregularly shaped pipes include square, oval, triangular, hexagonal, seed-shaped, star-shaped, and finned pipes, among other complex shapes. Depending on the application, there are thick-walled and thin-walled seamless steel pipes.

[0003] Round hot-rolled seamless steel pipes are typically manufactured by heating billets in a high-frequency induction heating furnace, followed by processes such as piercing, rolling, and drawing. The high-frequency induction heating furnace is a highly efficient and energy-saving heating device. It can quickly heat steel billets or tube blanks to the required temperature, thereby shortening heating time and improving production efficiency. By adjusting the power and frequency of the induction coil, precise control of the heating area and depth can be achieved, ensuring temperature uniformity in the heating zone. The induction heating furnace is electrically driven, avoiding pollution from traditional fuel combustion and better meeting the needs of modern clean production lines. It is widely used in the production of hot-rolled seamless steel pipes. However, some existing high-frequency induction heating furnaces for hot-rolled seamless steel pipes cannot be adjusted according to billets of different diameters, and cannot keep the billet always in the center of the heating channel, easily leading to uneven heating. To address these problems, the inventors have proposed a high-efficiency and energy-saving heating furnace device for hot-rolled seamless steel pipes. Utility Model Content

[0004] To address the problem that some existing high-frequency induction heating furnaces for hot-rolled seamless steel pipes cannot be adjusted according to the different diameters of the billets, and cannot keep the billets in the center of the heating channel of the furnace at all times, which easily leads to uneven heating of the billets, the purpose of this utility model is to provide a high-efficiency and energy-saving heating furnace device for hot-rolled seamless steel pipes.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a high-efficiency and energy-saving heating furnace device for hot-rolled seamless steel pipes, including a workbench and a heating furnace body. A fixed frame is fixedly installed on the workbench, and the heating furnace body is slidably installed in the fixed frame. Threaded rods are rotatably installed on both sides of the fixed frame, and the threaded rods are threaded into both sides of the heating furnace body. A first worm gear is fixedly installed at the top of each of the two threaded rods. A first drive shaft is rotatably installed at the top of the fixed frame. A first worm is fixedly installed at both ends of the first drive shaft, and the first worm meshes with the corresponding first worm gear. A first motor is fixedly installed on one side of the top of the fixed frame, and the output end of the first motor is fixedly connected to one end of the first drive shaft. Support wheels are rotatably installed at both ends of the upper surface of the workbench.

[0006] Preferably, two mirror-distributed limiting plates are slidably installed at both ends of the heating channel of the furnace body, and multiple ball bearings distributed in an array are rotatably installed on the inner side of each of the four limiting plates. Two bidirectional lead screws are symmetrically distributed at both ends of the heating channel of the furnace body, and the bidirectional lead screws are threaded into the corresponding two limiting plates.

[0007] Preferably, rotating rods are rotatably mounted on both ends of one side of the heating furnace body, and first bevel gears are fixedly mounted on both ends of the two rotating rods. Second bevel gears are fixedly mounted on one end of each of the four bidirectional lead screws, and the second bevel gears mesh with the corresponding first bevel gears.

[0008] Preferably, a second drive shaft is rotatably mounted on one side of the top of the heating furnace body, and a second worm is fixedly mounted on both ends of the second drive shaft. A second worm wheel is fixedly mounted on the top of each of the two rotating rods, and the second worm wheel meshes with the corresponding second worm. A second motor is fixedly mounted on one side of the top of the heating furnace body, and the output end of the second motor is fixedly connected to one end of the second drive shaft.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. In this utility model, according to the diameter of different cylindrical steel billets, the corresponding transmission components can be used to drive the threaded rod to rotate. The threaded rod drives the heating furnace body to rise and fall within the fixed frame, so that the heating channel of the steel billet and the heating furnace body are located on the same central axis, thereby making the steel billet heat more evenly.

[0011] 2. In this utility model, according to the diameter of different cylindrical steel billets, the corresponding transmission components can be used to drive the bidirectional lead screw to rotate. The bidirectional lead screw drives the two corresponding limiting plates to slide towards each other. By adjusting the distance between the two adjacent limiting plates, the steel billet can be positioned and limited to prevent displacement of the steel billet during heating, making the steel billet more stable during heating. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall rear structure of this utility model;

[0015] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0016] Figure 4 This is a schematic diagram of the heating furnace body structure of this utility model;

[0017] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point B.

[0018] In the diagram: 1. Workbench; 2. Fixing frame; 3. Heating furnace body; 4. Threaded rod; 5. First worm gear; 6. First drive shaft; 7. First motor; 8. Support wheel; 9. First worm; 10. Limiting plate; 11. Ball bearing; 12. Bidirectional lead screw; 13. Rotating rod; 14. Second drive shaft; 15. First bevel gear; 16. Second worm gear; 17. Second worm; 18. Second motor; 19. Second bevel gear. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Figure 1-5As shown, this utility model provides a high-efficiency and energy-saving heating furnace device for hot-rolled seamless steel pipes, including a workbench 1 and a heating furnace body 3. The heating furnace body 3 is an existing high-frequency induction heating furnace. A high-frequency induction heating furnace is a device that uses high-frequency current to generate a high-frequency magnetic field through an induction coil, causing eddy currents inside conductors such as metals, thereby generating heat for heating. This heating method has the characteristics of high efficiency, energy saving, environmental protection, and safety. Both ends of the workbench 1 are equipped with feeding and discharging devices for conveying steel billets. A fixed frame 2 is fixedly installed on the workbench 1. The heating furnace body 3 is slidably installed in the fixed frame 2. Threaded rods 4 are rotatably installed on both sides of the fixed frame 2, and the threaded rods 4 are threaded into both sides of the heating furnace body 3. The top ends of the two threaded rods 4 are fixedly installed with first worm gears 5. The top end of the fixed frame 2 is rotatably installed with a first drive shaft 6. The two ends of the first drive shaft 6 are fixedly installed with first worm gears 9, and the first worm gears 9 mesh with the corresponding first worm gears 5. A first motor 7 is fixedly installed on one side of the top end of the fixed frame 2, and the output end of the first motor 7 is connected to the first drive shaft 6. The workbench 1 is fixedly connected at both ends, and support wheels 8 are rotatably installed at both ends of its upper surface. First, based on the diameter of the cylindrical steel billet, the first motor 7 drives the first drive shaft 6 to rotate. The first drive shaft 6 drives the first worm gear 9 to rotate, the first worm gear 9 drives the first worm wheel 5 to rotate, and the first worm wheel 5 drives the threaded rod 4 to rotate. The threaded rod 4 drives the heating furnace body 3 to rise and fall within the fixed frame 2, so that the steel billet and the heating channel of the heating furnace body 3 are located on the same central axis, thereby making the steel billet heat more evenly. The cylindrical steel billet enters the heating channel of the heating furnace body 3 through the feeding device for heating treatment. After heating is completed, it is pulled out through the discharge device. The support wheels 8 can support the steel billet, so that the steel billet remains stable during transportation.

[0021] Two mirror-distributed limiting plates 10 are slidably installed at both ends of the heating channel of the furnace body 3. Multiple balls 11 arranged in an array are rotatably installed on the inner side of the four limiting plates 10. Two bidirectional lead screws 12 are symmetrically distributed at both ends of the heating channel of the furnace body 3, and the bidirectional lead screws 12 are threaded into the corresponding two limiting plates 10.

[0022] By adopting the above technical solution, according to the diameter of the steel billet, the two corresponding limiting plates 10 are driven to slide towards each other by the bidirectional lead screw 12. The distance between the two adjacent limiting plates 10 can be adjusted to position and limit the steel billet, prevent the steel billet from shifting during heating, and make the steel billet more stable during heating. The ball bearings 11 on the limiting plate 10 facilitate the movement of the steel billet.

[0023] Rotating rods 13 are rotatably mounted on both ends of one side of the heating furnace body 3. First bevel gears 15 are fixedly mounted on both ends of the two rotating rods 13. Second bevel gears 19 are fixedly mounted on one end of each of the four bidirectional lead screws 12, and the second bevel gears 19 mesh with the corresponding first bevel gears 15.

[0024] By adopting the above technical solution, the rotating rod 13 drives the first bevel gear 15 to rotate, and the first bevel gear 15 drives the bidirectional lead screw 12 to rotate through the corresponding second bevel gear 19.

[0025] A second drive shaft 14 is rotatably mounted on one side of the top of the heating furnace body 3. A second worm gear 17 is fixedly mounted on both ends of the second drive shaft 14. A second worm wheel 16 is fixedly mounted on the top of each of the two rotating rods 13, and the second worm wheel 16 meshes with the corresponding second worm gear 17. A second motor 18 is fixedly mounted on one side of the top of the heating furnace body 3, and the output end of the second motor 18 is fixedly connected to one end of the second drive shaft 14.

[0026] By adopting the above technical solution, the second motor 18 drives the second drive shaft 14 to rotate, the second drive shaft 14 drives the second worm 17 to rotate, the second worm 17 drives the second worm wheel 16 to rotate, and the second worm wheel 16 drives the rotating rod 13 to rotate.

[0027] Working principle: When this utility model is in use, firstly, according to the diameter of the cylindrical steel billet, the first motor 7 drives the first drive shaft 6 to rotate, the first drive shaft 6 drives the first worm 9 to rotate, the first worm 9 drives the first worm wheel 5 to rotate, the first worm wheel 5 drives the threaded rod 4 to rotate, and the threaded rod 4 drives the heating furnace body 3 to rise and fall within the fixed frame 2, so that the heating channel of the steel billet and the heating furnace body 3 are located on the same central axis, thereby making the steel billet heat more evenly;

[0028] Next, based on the diameter of the steel billet, the second motor 18 drives the second drive shaft 14 to rotate, the second drive shaft 14 drives the second worm gear 17 to rotate, the second worm gear 17 drives the second worm wheel 16 to rotate, the second worm wheel 16 drives the rotating rod 13 to rotate, the rotating rod 13 drives the first bevel gear 15 to rotate, the first bevel gear 15 drives the double-acting screw 12 to rotate through the corresponding second bevel gear 19, and the double-acting screw 12 drives the two corresponding limiting plates 10 to slide towards each other. By adjusting the distance between the two adjacent limiting plates 10, the steel billet can be positioned and limited to prevent displacement of the steel billet during heating, making the steel billet more stable during heating. The ball bearings 11 on the limiting plate 10 facilitate the movement of the steel billet.

[0029] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high-efficiency energy-saving heating furnace device for hot-rolling seamless steel pipes, comprising a workbench (1) and a heating furnace body (3), characterized in that: A fixed frame (2) is fixedly installed on the workbench (1). The heating furnace body (3) is slidably installed in the fixed frame (2). Threaded rods (4) are rotatably installed on both sides of the fixed frame (2), and the threaded rods (4) are threaded into both sides of the heating furnace body (3). A first worm gear (5) is fixedly installed at the top of each of the two threaded rods (4). A first drive shaft (6) is rotatably installed at the top of the fixed frame (2). A first worm (9) is fixedly installed at both ends of the first drive shaft (6), and the first worm (9) meshes with the corresponding first worm gear (5). A first motor (7) is fixedly installed on one side of the top of the fixed frame (2), and the output end of the first motor (7) is fixedly connected to one end of the first drive shaft (6). Support wheels (8) are rotatably installed at both ends of the upper surface of the workbench (1).

2. A high-efficiency energy-saving heating furnace device for hot-rolling seamless steel pipes according to claim 1, characterized in that, The heating channel of the furnace body (3) is slidably installed with two mirror-distributed limiting plates (10) at both ends, and multiple ball bearings (11) are rotatably installed on the inner side of the four limiting plates (10).

3. A high efficiency energy saving heating furnace for hot rolling seamless steel pipes as claimed in claim 1, wherein The heating channel of the furnace body (3) is rotatably installed with two bidirectional screws (12) symmetrically distributed at both ends, and the bidirectional screws (12) are threaded into the corresponding two limiting plates (10).

4. A high efficiency energy saving heating furnace for hot rolling seamless steel pipes as claimed in claim 1, wherein Rotating rods (13) are rotatably installed at both ends of one side of the heating furnace body (3), and first bevel gears (15) are fixedly installed at both ends of the two rotating rods (13).

5. A high efficiency energy saving heating furnace for hot rolling seamless steel pipes as claimed in claim 3, wherein Each of the four bidirectional lead screws (12) has a second bevel gear (19) fixedly installed at one end, and the second bevel gear (19) meshes with the corresponding first bevel gear (15).

6. A high efficiency energy saving heating furnace for hot rolling seamless steel pipes as claimed in claim 1, wherein A second drive shaft (14) is rotatably mounted on one side of the top of the heating furnace body (3), and a second worm gear (17) is fixedly mounted on both ends of the second drive shaft (14).

7. A high efficiency energy saving heating furnace for hot rolling seamless steel pipes as claimed in claim 4, wherein The top ends of both rotating rods (13) are fixedly equipped with second worm gears (16), and the second worm gears (16) mesh with the corresponding second worm (17).

8. A high efficiency energy saving heating furnace for hot rolling seamless steel pipes as claimed in claim 1, wherein A second motor (18) is fixedly installed on one side of the top of the heating furnace body (3), and the output end of the second motor (18) is fixedly connected to one end of the second drive shaft (14).

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