A hot rolled seamless steel tube sizing machine

Abstract

The utility model relates to hot rolled seamless steel pipe technical field discloses a kind of hot rolled seamless steel pipe sizing machine, including machine main body, sizing roller is arranged in the machine main body, quick-release assembly is arranged on the sizing roller outer wall, the base plate is fixedly connected in the machine main body bottom, the adjusting assembly is arranged in the base plate bottom, the quick-release assembly includes clamping block, the clamping block outer wall is arranged on the sizing roller outer wall, the clamping groove is opened in the machine main body interior, the clamping block outer wall is slidably connected in the clamping groove inner wall, the slide rail one is slidably connected in the machine main body inner wall, the fixed frame is fixedly connected in the slide rail one outer wall, the sizing roller outer wall is rotatably connected in the fixed frame inner wall.In the utility model, by sliding rail one in the machine main body inner wall sliding, then by clamping block moving to clamping groove interior, avoid traditional sizing roller disassembly need by bolt fastening, many tool cooperation disassembly, time-consuming is longer, to greatly shorten downtime, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hot-rolled seamless steel pipe technology, and in particular to a hot-rolled seamless steel pipe sizing machine. Background Technology

[0002] In modern industrial systems, hot-rolled seamless steel pipes, with their advantages of high strength and high pressure resistance, have become an indispensable basic material in fields such as oil pipelines, high-pressure boilers, and machinery manufacturing. As a key piece of equipment in seamless steel pipe production, the sizing mill undertakes the important task of calibrating the diameter and correcting the shape of the hot-rolled steel pipes. Its performance directly determines the dimensional accuracy, surface quality, and production efficiency of the steel pipes.

[0003] Currently, the structural design and technical principles of traditional hot-rolled seamless steel pipe sizing mills are mainly based on fixed frames and conventional mechanical transmissions. The sizing rollers, as the core component, are typically mounted on the frame using bolts or key connections. They are driven to rotate by a transmission system consisting of a motor, reducer, and gearbox, which rolls and sizing the steel pipe. When the steel pipe enters the sizing mill, the rotating sizing rollers drive the pipe to rotate synchronously and move forward through friction. During this process, the sizing rollers apply radial pressure to the outer wall of the steel pipe, gradually bringing its diameter closer to the target size, thus completing the sizing operation.

[0004] However, existing sizing machines have revealed significant limitations in practical applications. The bolt-fastening or key-connection method of traditional sizing rollers makes the disassembly process cumbersome and complex, requiring the use of wrenches, jacks, and other tools, consuming a lot of manpower and time. When sizing rollers need to be replaced frequently due to wear, impurities, etc., the long downtime for maintenance will seriously disrupt the production line, leading to a significant drop in production capacity. Therefore, a hot-rolled seamless steel pipe sizing machine is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a hot-rolled seamless steel pipe sizing machine, which aims to improve the problem of the inability to quickly disassemble the sizing rollers in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hot-rolled seamless steel pipe sizing machine includes a machine body, a sizing roller is provided inside the machine body, a quick-release assembly is provided on the outer wall of the sizing roller, a base plate is fixedly connected to the bottom of the machine body, and an adjustment assembly is provided at the bottom of the base plate.

[0008] The quick-release assembly includes a locking block, the outer wall of which is disposed on the outer wall of the sizing roller. A slot is provided inside the machine body. The outer wall of the locking block is slidably connected to the inner wall of the slot. A slide rail is slidably connected to the inner wall of the machine body. A fixing frame is fixedly connected to the outer wall of the slide rail. The outer wall of the sizing roller is rotatably connected to the inner wall of the fixing frame. A sliding column is slidably connected to the inner wall of the fixing frame. A pull rod is fixedly connected to the top of the sliding column. The outer wall of the locking block is fixedly connected to the bottom of the sliding column. A spring is sleeved on the outer wall of the sliding column. One end of the spring is fixedly connected to the inner wall of the fixing frame, and the other end of the spring is fixedly connected to the outer wall of the locking block.

[0009] As a further description of the above technical solution:

[0010] The adjustment assembly includes a telescopic support frame, one end of which is fixedly connected to the bottom of the base plate, and the other end of which is fixedly connected to a base plate;

[0011] As a further description of the above technical solution:

[0012] A bracket is fixedly connected to the outer wall of the base plate, and a slide rail is fixedly connected to the outer wall of the base plate.

[0013] As a further description of the above technical solution:

[0014] An electric push rod is fixedly connected to the outer wall of the base plate, and a rack is fixedly connected to the output end of the electric push rod. The inner wall of the rack is slidably connected to the outer wall of the slide rail.

[0015] As a further description of the above technical solution:

[0016] A gear is provided on the top of the base plate, the outer wall of the gear meshes with the outer wall of the rack, and a fixing rod is fixedly connected to the inner wall of the gear;

[0017] As a further description of the above technical solution:

[0018] The outer wall of the fixed rod is rotatably connected to the inner wall of the bracket, and a connecting arm is fixedly connected to the outer wall of the fixed rod;

[0019] As a further description of the above technical solution:

[0020] A first rotating column is rotatably connected to the outer wall of the first connecting arm, and a second connecting arm is fixedly connected to the outer wall of the first rotating column.

[0021] As a further description of the above technical solution:

[0022] The outer wall of the second connecting arm is rotatably connected to the second rotating column, and the outer wall of the second rotating column is fixedly connected to the connecting block, the top of the connecting block being fixedly connected to the bottom of the substrate.

[0023] This utility model has the following beneficial effects:

[0024] In this invention, the sizing roller slides along the inner wall of the machine body via a slide rail and then moves into the slot via a locking block, achieving the effect of quick disassembly and installation of the sizing roller. This avoids the need for bolt tightening and multiple tools to disassemble the sizing roller in the traditional way, which is time-consuming. If the sizing roller is worn or has impurities adhering to it and needs to be replaced frequently, long downtime can easily lead to production line interruption and affect production capacity. This invention significantly shortens downtime and improves production efficiency.

[0025] In this invention, the rack slides on the outer wall of the slide rail, and then drives the gear to rotate, thereby achieving the effect of adjusting the height of the sizing machine. This avoids the problem of the fixed height of the traditional sizing machine, which is prone to height misalignment when connecting to different specifications of rolling mills or adjusting the layout of the production line. This can cause the steel pipe to jam, tilt, or even fail to pass through properly during transportation. When the height of the sizing machine is inconsistent with the height of the equipment in front and behind, the steel pipe will generate additional bending stress due to the height misalignment when passing through the sizing hole, resulting in deviation of the outer diameter or surface scratches. This improves the versatility of the equipment and enhances the sizing quality. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a hot-rolled seamless steel pipe sizing machine proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the clamping block of a hot-rolled seamless steel pipe sizing machine proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the second slide rail of a hot-rolled seamless steel pipe sizing machine proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the connecting arm of a hot-rolled seamless steel pipe sizing machine proposed in this utility model;

[0031] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0032] Legend:

[0033] 1. Machine body; 2. Sizing roller; 3. Base plate; 4. Clamping block; 5. Clamping slot; 6. Fixing frame; 7. Slide rail one; 8. Sliding column; 9. Tie rod; 10. Spring; 11. Base plate; 12. Slide rail two; 13. Electric push rod; 14. Rack; 15. Gear; 16. Fixing rod; 17. Bracket; 18. Connecting arm one; 19. Rotating column one; 20. Connecting arm two; 21. Rotating column two; 22. Connecting block; 23. Telescopic support frame. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1-3 This utility model provides an embodiment of a hot-rolled seamless steel pipe sizing machine, comprising a machine body 1, a sizing roller 2 disposed inside the machine body 1, a quick-release assembly disposed on the outer wall of the sizing roller 2, a base plate 3 fixedly connected to the bottom of the machine body 1, an adjustment assembly disposed at the bottom of the base plate 3, the quick-release assembly including a locking block 4, the outer wall of the locking block 4 disposed on the outer wall of the sizing roller 2, a slot 5 opened inside the machine body 1, the outer wall of the locking block 4 slidably connected to the inner wall of the slot 5, the locking block 4 is used to form a quick-locking connection with the slot 5, thereby achieving the function of firmly installing the sizing roller 2 inside the machine body 1, preventing displacement of the sizing roller 2, and ensuring sizing accuracy, a slide rail 7 slidably connected to the inner wall of the machine body 1, a fixing frame 6 fixedly connected to the outer wall of the slide rail 7, the slide rail 7 and the fixing frame 6 performing horizontal sliding movement, thereby providing stable support and convenient disassembly for the sizing roller 2. The sizing roller 2 is rotatably connected to the inner wall of the fixed frame 6. The fixed frame 6 provides a mounting base for the sizing roller 2, ensuring that the sizing roller 2 can rotate smoothly. A sliding column 8 is slidably connected to the inner wall of the fixed frame 6. A pull rod 9 is fixedly connected to the top of the sliding column 8. The outer wall of the locking block 4 is fixedly connected to the bottom of the sliding column 8. The operator pulls the pull rod 9 to drive the sliding column 8 to move the locking block 4 up and down in the fixed frame 6, thereby unlocking and locking the fixed frame 6. A spring 10 is sleeved on the outer wall of the sliding column 8. One end of the spring 10 is fixedly connected to the inner wall of the fixed frame 6, and the other end of the spring 10 is fixedly connected to the outer wall of the locking block 4. When the pull rod 9 is lifted to disengage the locking block 4 from the slot 5, the spring 10 is compressed and stores elastic potential energy. After the pull rod 9 is released, the spring 10 releases elastic potential energy to push the locking block 4 to automatically reset and embed into the slot 5, thereby achieving the effect of quickly locking the sizing roller 2.

[0036] Reference Figure 1 and Figures 4-6The adjustment component includes a telescopic support frame 23, which supports the base plate 3 and allows for height adjustment, enabling flexible adjustment of the overall height of the sizing machine according to production needs. One end of the telescopic support frame 23 is fixedly connected to the bottom of the base plate 3, and the other end is fixedly connected to a base plate 11. A bracket 17 is fixedly connected to the outer wall of the base plate 11, and a slide rail 12 is fixedly connected to the outer wall of the base plate 11. An electric push rod 13 is fixedly connected to the outer wall of the base plate 11, and a rack 14 is fixedly connected to the output end of the electric push rod 13. The inner wall of the rack 14 is slidably connected to the outer wall of the slide rail 12. The electric push rod 13 outputs thrust to drive the rack 14 to slide along the slide rail 12, achieving the effect of converting linear motion into the rotational motion of the gear 15. A gear 15 is provided on the top of the base plate 11, and the outer wall of the gear 15 meshes with the outer wall of the rack 14. The meshing of the gear 15 and the rack 14 converts linear motion into rotational motion. The motion is converted into rotational motion. A fixed rod 16 is fixedly connected to the inner wall of gear 15. The outer wall of fixed rod 16 is rotatably connected to the inner wall of bracket 17. A connecting arm 18 is fixedly connected to the outer wall of fixed rod 16. A rotating column 19 is rotatably connected to the outer wall of connecting arm 18. A connecting arm 20 is fixedly connected to the outer wall of rotating column 19. A rotating column 21 is rotatably connected to the outer wall of connecting arm 20. A connecting block 22 is fixedly connected to the outer wall of rotating column 21. The top of connecting block 22 is fixedly connected to the bottom of base plate 3. Connecting arm 18, rotating column 19, connecting arm 20, rotating column 21 and connecting block 22 form a linkage mechanism. When fixed rod 16 drives connecting arm 18 to rotate, rotating column 19 and rotating column 21 drive connecting arm 20 to swing, which ultimately pushes connecting block 22 to drive base plate 3 to make vertical lifting and lowering motion, so as to achieve the effect of precisely adjusting the height of sizing machine.

[0037] Working principle: When disassembling the sizing roller 2, first pull the pull rod 9, which moves the sliding column 8. The movement of the sliding column 8 then moves the locking block 4. The movement of the locking block 4 compresses the spring 10. When the roller moves out of the slot 5, it releases the fixation of the sizing roller 2. Then, pull the fixing frame 6 to move the slide rail 7 on the inner wall of the base plate 3, thus completing the disassembly of the sizing roller 2. When installing the sizing roller 2, simply slide the slide rail 7 on the inner wall of the base plate 3, then release the pull rod 9. The rebound of the spring 10 moves the locking block 4 to the inner wall of the slot 5, thus fixing the sizing roller 2. This avoids the traditional method of disassembling the sizing roller 2, which requires bolt tightening and multiple tools, and is time-consuming. If the sizing roller 2 is worn or has impurities, frequent replacement is required, and prolonged downtime can easily lead to production line interruption and affect production capacity.

[0038] When adjusting the height of the substrate 3, firstly, the electric push rod 13 is activated, which pushes the rack 14 to slide on the outer wall of the slide rail 12. The sliding of the rack 14 then drives the gear 15 to rotate. The rotation of the gear 15 then drives the fixing rod 16 to rotate on the inner wall of the bracket 17. Next, the rotation of the fixing rod 16 drives the connecting arm 18 to rotate, which in turn drives the rotating column 19 to move. Subsequently, the movement of the rotating column 19 drives the connecting arm 20 to move. Then, the connecting... The movement of the connecting arm 20 drives the rotating column 21 to move, which in turn drives the connecting block 22 to move up and down. This movement of the connecting block 22 adjusts the height of the base plate 3, avoiding the problem of fixed height in traditional sizing machines. When connecting to different specifications of rolling mills or adjusting the layout of the production line, height misalignment can easily occur, causing the steel pipe to jam, tilt, or even fail to pass through properly. When the height of the sizing machine is inconsistent with that of the equipment before and after it, the steel pipe will generate additional bending stress due to the height misalignment when passing through the sizing hole, resulting in deviation of the outer diameter or surface scratches.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hot-rolled seamless steel pipe sizing mill, comprising a machine body (1), characterized in that: The machine body (1) is provided with a sizing roller (2) inside, and a quick-release assembly is provided on the outer wall of the sizing roller (2). A base plate (3) is fixedly connected to the bottom of the machine body (1), and an adjustment assembly is provided at the bottom of the base plate (3). The quick-release assembly includes a locking block (4), the outer wall of which is disposed on the outer wall of the sizing roller (2), a slot (5) is provided inside the machine body (1), the outer wall of the locking block (4) is slidably connected to the inner wall of the slot (5), a slide rail (7) is slidably connected to the inner wall of the machine body (1), a fixed frame (6) is fixedly connected to the outer wall of the slide rail (7), the outer wall of the sizing roller (2) is rotatably connected to the inner wall of the fixed frame (6), a sliding column (8) is slidably connected to the inner wall of the fixed frame (6), a pull rod (9) is fixedly connected to the top of the sliding column (8), the outer wall of the locking block (4) is fixedly connected to the bottom of the sliding column (8), a spring (10) is sleeved on the outer wall of the sliding column (8), one end of the spring (10) is fixedly connected to the inner wall of the fixed frame (6), and the other end of the spring (10) is fixedly connected to the outer wall of the locking block (4).

2. The hot-rolled seamless steel pipe sizing machine according to claim 1, characterized in that: The adjustment assembly includes a telescopic support frame (23), one end of which is fixedly connected to the bottom of the base plate (3), and the other end of which is fixedly connected to a base plate (11).

3. A hot-rolled seamless steel pipe sizing machine according to claim 2, characterized in that: The base plate (11) is fixedly connected to the outer wall of the bracket (17), and the base plate (11) is fixedly connected to the outer wall of the slide rail (12).

4. A hot-rolled seamless steel pipe sizing machine according to claim 3, characterized in that: An electric push rod (13) is fixedly connected to the outer wall of the base plate (11), and a rack (14) is fixedly connected to the output end of the electric push rod (13). The inner wall of the rack (14) is slidably connected to the outer wall of the slide rail (12).

5. A hot-rolled seamless steel pipe sizing machine according to claim 4, characterized in that: A gear (15) is provided on the top of the base plate (11). The outer wall of the gear (15) meshes with the outer wall of the rack (14). A fixing rod (16) is fixedly connected to the inner wall of the gear (15).

6. A hot-rolled seamless steel pipe sizing machine according to claim 5, characterized in that: The outer wall of the fixing rod (16) is rotatably connected to the inner wall of the bracket (17), and a connecting arm (18) is fixedly connected to the outer wall of the fixing rod (16).

7. A hot-rolled seamless steel pipe sizing machine according to claim 6, characterized in that: The outer wall of the first connecting arm (18) is rotatably connected to the first rotating column (19), and the outer wall of the first rotating column (19) is fixedly connected to the second connecting arm (20).

8. A hot-rolled seamless steel pipe sizing machine according to claim 7, characterized in that: The outer wall of the connecting arm 2 (20) is rotatably connected to the rotating column 2 (21), and the outer wall of the rotating column 2 (21) is fixedly connected to the connecting block (22), and the top of the connecting block (22) is fixedly connected to the bottom of the base plate (3).

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