Inner wall polishing equipment for steel pipe thermal expansion machining
By designing polishing equipment that adapts to steel pipes of different diameters or wall thicknesses, and combining rotating, fixing, and dust removal mechanisms, the problems of poor adaptability and environmental pollution of traditional equipment have been solved, achieving efficient and low-cost polishing and cleaning of the inner walls of steel pipes.
Patent Information
- Application Number
- CN202520595956.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Traditional steel pipe polishing equipment is difficult to adapt to steel pipes of different diameters or wall thicknesses, and lacks an effective dust removal mechanism, resulting in high processing costs, serious environmental pollution, and high health risks to workers.
An internal wall polishing device was designed, which includes a rotating mechanism, a fixing mechanism, a moving mechanism, and a dust removal mechanism. It can adapt to polishing steel pipes of different diameters or wall thicknesses, and the dust removal mechanism can remove dust and particulate matter in real time to keep the working environment clean.
It achieves efficient polishing of steel pipes of different diameters or wall thicknesses without the need to replace or adjust equipment, reducing processing costs, improving the practicality of the device, and reducing environmental pollution and worker health risks.
Smart Images
Figure CN223917588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe hot expansion processing technology, and in particular to an inner wall polishing device for steel pipe hot expansion processing. Background Technology
[0002] Steel pipe is a tubular object made of steel, widely used in construction, machinery, petroleum and chemical industries. With the continuous development of industry, steel pipe, as an important engineering material, has its inner wall quality directly affecting the efficiency of fluid transportation, the corrosion resistance of the pipeline, and the safety of the overall structure in these applications. Improving the smoothness and surface quality of the inner wall of steel pipe has become an important technical issue, thus requiring an inner wall polishing equipment for hot expansion processing of steel pipe.
[0003] Traditional steel pipe polishing equipment is typically designed to process steel pipes of specific specifications and sizes. This means that when polishing steel pipes of different diameters or wall thicknesses is required, operators must change or adjust the equipment, increasing processing costs and reducing the practicality of the device. Moreover, traditional steel pipe polishing equipment usually lacks an effective dust removal mechanism. Dust and particles generated during the polishing process can easily fly around, polluting the working environment and potentially affecting other equipment and products, increasing the workload of subsequent cleaning. Workers working in such an environment for extended periods are susceptible to dust irritation, which may lead to respiratory illnesses or other health problems. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an inner wall polishing device for hot expansion processing of steel pipes.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A steel pipe hot expansion processing inner wall polishing device includes an operating table. A Z-shaped plate is mounted on one end of the top of the operating table. A moving mechanism for moving the Z-shaped plate is mounted on one side of the top of the operating table. A connecting pipe is passed through one side wall of the Z-shaped plate. Multiple through holes are equidistantly arranged in a circular pattern on the outer side wall of the connecting pipe. A first cylinder is fixed to one end of each through hole. A circular seat is rotatably connected to one side wall of the first cylinder. A rotating mechanism for rotating the circular seat is located inside the first cylinder. Multiple second sleeves are equidistantly arranged in a circular pattern on the outer side wall of the circular seat. Circular sliders are slidably connected to the inner side walls of each of the multiple second sleeves. Connecting rods are fixed to the top of each of the multiple circular sliders, with one end of each connecting rod passing through one end of a multiple circular slider. The device features a fixed arc-shaped polishing plate, multiple second sleeves with springs on their inner walls, a fixing mechanism for securing the steel pipes on the top of the operating table, and a dust removal mechanism at one end of the bottom of the operating table. During use, the rotating mechanism drives the circular seat to rotate, working in conjunction with multiple second sleeves, a circular slider, a connecting rod, the arc-shaped polishing plate, and springs to polish steel pipes of different diameters or wall thicknesses. This eliminates the need for operators to change or adjust equipment, reducing processing costs and improving the device's practicality. The dust removal mechanism effectively removes dust and particulate matter generated during polishing, maintaining a clean working environment, reducing subsequent cleaning workload, and preventing dust irritation to workers, thus lowering the risk of respiratory illnesses or other health problems.
[0007] Preferably, the fixing mechanism includes two horizontal plates symmetrically arranged on both sides of the top of the operating table. Multiple V-shaped blocks are linearly fixed at equal intervals on the inner sidewalls of the two horizontal plates. First support plates are fixed at both ends of the outer sidewalls of the two horizontal plates. Slide grooves are symmetrically formed at both ends of the top of the operating table. Bidirectional lead screws are rotatably connected to the inner sidewalls of the two slide grooves. First lead screw nuts are fitted at both ends of the two bidirectional lead screws, and the four first lead screw nuts are grouped in pairs. The two groups of first lead screw nuts are respectively adapted to the two bidirectional lead screws. The four first lead screw nuts are respectively fixed to the four first support plates. Two first motors are fixed to the outer sidewall of the operating table, and the output shafts of the two first motors are respectively fixed to the two bidirectional lead screws. Driving the two first motors drives the two bidirectional lead screws to rotate simultaneously. This, in conjunction with the four first lead screw nuts, drives the four first support plates to move closer together in pairs, thereby driving the multiple V-shaped blocks to move closer together in pairs. This clamps and fixes the steel pipe, ensuring the stability of the steel pipe's position during polishing and improving polishing quality.
[0008] Preferably, the moving mechanism includes two second support plates, which are symmetrically fixed to one side of the top of the operating table. The inner walls of the two second support plates are rotatably connected to the same lead screw. The inner walls of the two second support plates are fixed to the same sliding rod, which is parallel to the lead screw. A second lead screw nut is sleeved on the side wall of the sliding rod, and the second lead screw nut is adapted to the lead screw. The second lead screw nut is fixed to the other end of the Z-shaped plate. A second motor is fixed to the outer wall of one of the second support plates, and the output shaft of the second motor is fixed to the lead screw. The rotating mechanism includes a third motor, which is fixed to the middle of the inner wall of one end of the first cylinder. The output shaft of the third motor passes through the outer wall of one end of the first cylinder and is fixed to a circular seat. Pressing multiple arc-shaped polishing plates causes multiple connecting rods and multiple circular sliders to move along the inner walls of multiple second sleeves, causing multiple springs to... With all springs compressed, multiple arc-shaped polishing plates are placed inside one end of the steel pipe. Under the reaction force of these compressed springs, multiple circular sliders push multiple connecting rods in the opposite direction, ensuring that all arc-shaped polishing plates are in close contact with the inner wall of the steel pipe. This drives a third motor to rotate a circular seat, which in turn rotates multiple second sleeves, circular sliders, and connecting rods. Simultaneously, the power switch of the second motor is turned on, driving the lead screw to rotate. This causes the second lead screw nut to move along the sliding rod direction. The movement of the second lead screw nut, in conjunction with the Z-shaped plate, moves the connecting pipe, which in turn moves the first sleeve and the circular seat along the inner wall of the steel pipe. This allows the multiple arc-shaped polishing plates to move and rotate simultaneously, polishing the inner wall of the steel pipe. This allows for polishing of steel pipes of different diameters or wall thicknesses without requiring operator replacement or adjustment of the equipment, reducing processing costs and improving the practicality of the device.
[0009] Preferably, the dust removal mechanism includes a connecting box fixed to one end of the bottom of the operating table. A vacuum cleaner is installed inside the connecting box, and a flexible hose is installed through the outer wall of the connecting box. One end of the flexible hose is connected to the dust inlet of the vacuum cleaner, and the other end of the flexible hose is connected to a connecting pipe. By using the vacuum cleaner in conjunction with the flexible hose to evacuate the air from the connecting pipe, a negative pressure environment is created inside the connecting pipe. At this time, dust and particulate matter generated by the steel pipe enter the connecting pipe through multiple through holes and are collected by the vacuum cleaner through the flexible hose. This can avoid polluting the working environment, prevent the impact on other equipment and products, reduce the workload of subsequent cleaning, and at the same time avoid workers being easily irritated by dust, thus preventing workers from developing respiratory diseases or other health problems.
[0010] The beneficial effects of this utility model are as follows:
[0011] 1. During use, this device drives the circular seat to rotate through the rotating mechanism. In conjunction with multiple second sleeves, circular sliders, connecting rods, arc-shaped polishing plates, and springs, it can polish steel pipes of different diameters or wall thicknesses without requiring operators to change or adjust the equipment, thus reducing processing costs and improving the practicality of the device.
[0012] 2. The dust removal mechanism is designed to remove dust and particulate matter generated during the polishing process in real time, keeping the working environment clean, reducing the amount of subsequent cleaning work, effectively preventing dust from irritating workers, and reducing the risk of workers suffering from respiratory diseases or other health problems.
[0013] 3. The design of the fixing mechanism can firmly clamp the steel pipe, ensuring the stability of the steel pipe's position during the polishing process, thereby improving the polishing quality. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of an inner wall polishing device for hot expansion processing of steel pipes proposed in this utility model;
[0015] Figure 2 This is a schematic diagram of the fixing mechanism of an inner wall polishing device for hot expansion processing of steel pipes proposed in this utility model;
[0016] Figure 3 This is a schematic diagram of the moving mechanism of an inner wall polishing device for hot expansion processing of steel pipes proposed in this utility model;
[0017] Figure 4 This is a schematic cross-sectional view of the first cylinder of an inner wall polishing device for hot expansion processing of steel pipes proposed in this utility model;
[0018] Figure 5 This is a schematic cross-sectional view of the second sleeve of an inner wall polishing device for hot expansion processing of steel pipes proposed in this utility model;
[0019] Figure 6 This is a schematic diagram of the dust removal mechanism of an inner wall polishing device for hot expansion processing of steel pipes proposed in this utility model.
[0020] In the diagram: 1. Operating table; 2. Slide groove; 3. Bidirectional lead screw; 4. First motor; 5. Second support plate; 6. Lead screw; 7. Slide rod; 8. Second motor; 9. Second lead screw nut; 10. Z-shaped plate; 11. Connecting pipe; 12. Through hole; 13. Connecting box; 14. Flexible hose; 15. First lead screw nut; 16. First support plate; 17. Horizontal plate; 18. V-block; 19. First cylinder; 20. Third motor; 21. Circular seat; 22. Second sleeve; 23. Circular slider; 24. Connecting rod; 25. Arc-shaped polishing plate; 26. Spring. Detailed Implementation
[0021] 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.
[0022] Reference Figure 1 - Figure 6 A steel pipe hot expansion processing inner wall polishing device includes an operating table 1. A Z-shaped plate 10 is provided at one end of the top of the operating table 1. A moving mechanism for moving the Z-shaped plate 10 is provided on one side of the top of the operating table 1. A connecting pipe 11 is provided through one side wall of the Z-shaped plate 10. Multiple through holes 12 are opened in a circular pattern at equal intervals on the outer side wall of the connecting pipe 11. A first cylinder 19 is fixed to one end of the through hole 12. A circular seat 21 is rotatably connected to one side wall of the first cylinder 19. A rotating mechanism for rotating the circular seat 21 is provided inside the first cylinder 19. Multiple second sleeves 22 are fixed in a circular pattern at equal intervals on the outer side wall of the circular seat 21. Circular sliders 23 are slidably connected to the inner side walls of the multiple second sleeves 22. A connecting rod 24 is fixed to the top of each of the multiple circular sliders 23, and one end of each connecting rod 24 passes through one end of each of the multiple circular sliders 23. One end of each component is fixed with an arc-shaped polishing plate 25, and springs 26 are provided on the inner sidewalls of multiple second sleeves 22. A fixing mechanism for fixing steel pipes is provided on the top of the operating table 1, and a dust removal mechanism for dust removal is provided at one end of the bottom of the operating table 1. During use, the rotating mechanism drives the circular seat 21 to rotate. In conjunction with multiple second sleeves 22, circular sliders 23, connecting rods 24, arc-shaped polishing plates 25, and springs 26, steel pipes of different diameters or wall thicknesses can be polished without the need for operators to change or adjust the equipment, thus reducing processing costs and improving the practicality of the device. Through the design of the dust removal mechanism, dust and particulate matter generated during the polishing process can be extracted in real time, keeping the working environment clean, reducing the amount of subsequent cleaning work, effectively preventing dust from irritating workers, and reducing the risk of workers suffering from respiratory diseases or other health problems.
[0023] In this utility model, the fixing mechanism includes two horizontal plates 17, which are symmetrically arranged on both sides of the top of the operating table 1. Multiple V-shaped blocks 18 are fixed linearly at equal intervals on the inner sidewalls of the two horizontal plates 17. First support plates 16 are fixed to both ends of the outer sidewalls of the two horizontal plates 17. Slide grooves 2 are symmetrically opened at both ends of the top of the operating table 1. Two bidirectional lead screws 3 are rotatably connected to the inner sidewalls of the two slide grooves 2. First lead screw nuts 15 are fitted onto both ends of the two bidirectional lead screws 3, and the four first lead screw nuts 15 are grouped in pairs. The two groups of first lead screw nuts 15 are respectively connected to two bidirectional lead screws 16. The lead screw 3 is adapted to the four first lead screw nuts 15, which are respectively fixed to the four first support plates 16. Two first motors 4 are fixed to the outer wall of the operating table 1, and the output shafts of the two first motors 4 are respectively fixed to the two bidirectional lead screws 3. The two first motors 4 drive the two bidirectional lead screws 3 to rotate simultaneously. In conjunction with the four first lead screw nuts 15, the four first support plates 16 are driven to move closer to each other in pairs, which in turn drives the multiple V-blocks 18 to move closer to each other in pairs. This clamps and fixes the steel pipe, ensuring the stability of the steel pipe position during the polishing process and improving the polishing quality.
[0024] In this utility model, the moving mechanism includes two second support plates 5, which are symmetrically fixed to one side of the top of the operating table 1. The inner walls of the two second support plates 5 are rotatably connected to the same lead screw 6, and the inner walls of the two second support plates 5 are fixed to the same sliding rod 7, which is parallel to the lead screw 6. The side wall of the sliding rod 7 is fitted with a second lead screw nut 9, which is compatible with the lead screw 6. The second lead screw nut 9 is fixed to the other end of the Z-shaped plate 10. A second motor 8 is fixed to the outer wall of one of the second support plates 5, and the output shaft of the second motor 8 is fixed to the lead screw 6. The rotating mechanism includes a third motor 20, which is fixed to the middle of the inner wall of one end of the first cylinder 19. The output shaft of the third motor 20 passes through the outer wall of one end of the first cylinder 19, and the output shaft of the third motor 20 is fixed to the circular seat 21. Pressing multiple arc-shaped polishing plates 25 causes multiple connecting rods 24 and multiple circular sliders 23 to move along the inner walls of multiple second sleeves 22, causing multiple springs 26 to be compressed. In the first state, multiple arc-shaped polishing plates 25 are uniformly placed inside one end of the steel pipe. At this time, under the reaction action of multiple compressed springs 26, multiple circular sliders 23 push multiple connecting rods 24 to move in the opposite direction, so that multiple arc-shaped polishing plates 25 are in close contact with the inner wall of the steel pipe. This drives the third motor 20 to drive the circular seat 21 to rotate. In conjunction with multiple second sleeves 22, multiple circular sliders 23, and multiple connecting rods 24, multiple arc-shaped polishing plates 25 are rotated. At the same time, the power switch of the second motor 8 is turned on, driving the second motor 8 to drive the lead screw 6 to rotate, so that the second lead screw nut 9 moves along the direction of the slide rod 7. The movement of the second lead screw nut 9, in conjunction with the Z-shaped plate 10, drives the connecting pipe 11 to move, which in turn drives the first cylinder 19 and the circular seat 21 to move along the inner wall of the steel pipe. This allows multiple arc-shaped polishing plates 25 to move and rotate at the same time, which can polish the inner wall of the steel pipe. In this way, steel pipes of different diameters or wall thicknesses can be polished without the need for operators to change or adjust the equipment, reducing processing costs and improving the practicality of the device.
[0025] In this invention, the dust removal mechanism includes a connecting box 13, which is fixed to one end of the bottom of the operating table 1. A vacuum cleaner is installed inside the connecting box 13, and a flexible hose 14 is installed through the outer wall of the connecting box 13. One end of the flexible hose 14 is connected to the dust inlet of the vacuum cleaner, and the other end of the flexible hose 14 is connected to the connecting pipe 11. By using the vacuum cleaner in conjunction with the flexible hose 14 to evacuate the air from the connecting pipe 11, a negative pressure environment is created inside the connecting pipe 11. At this time, the dust and particulate matter generated by the steel pipe enter the connecting pipe 11 through multiple through holes 12 and are collected by the vacuum cleaner through the flexible hose 14. This can avoid polluting the working environment, prevent the impact on other equipment and products, reduce the workload of subsequent cleaning, and prevent workers from being easily irritated by dust, thus avoiding respiratory diseases or other health problems.
[0026] Working principle: During use, the steel pipe to be polished is placed between two horizontal plates 17, and the power switches of the two first motors 4 are turned on. The two first motors 4 drive the two bidirectional lead screws 3 to rotate simultaneously. With the help of the four first lead screw nuts 15, the four first support plates 16 move closer together in pairs, which in turn drives the multiple V-blocks 18 to move closer together in pairs, thus clamping and fixing the steel pipe. After fixing, the multiple arc-shaped polishing plates 25 are pressed, so that the multiple connecting rods 24 and the multiple circular sliders 23 move along the multiple first support plates 17. The inner wall of the second sleeve 22 moves, causing multiple springs 26 to be compressed, thus placing multiple arc-shaped polishing plates 25 into one end of the steel pipe. At this time, under the reaction force of the multiple compressed springs 26, multiple circular sliders 23 push multiple connecting rods 24 to move in the opposite direction, so that multiple arc-shaped polishing plates 25 are in close contact with the inner wall of the steel pipe. The power switch of the third motor 20 is then turned on, driving the third motor 20 to rotate the circular seat 21. In conjunction with the multiple second sleeves 22, multiple circular sliders 23, and multiple connecting rods 24, the multiple arc-shaped polishing plates 25 are rotated. 5. Rotate the motor and simultaneously turn on the power switch of the second motor 8, driving the second motor 8 to rotate the lead screw 6, causing the second lead screw nut 9 to move along the slide rod 7. The movement of the second lead screw nut 9, in conjunction with the Z-shaped plate 10, drives the connecting pipe 11 to move, which in turn drives the first cylinder 19 and the circular seat 21 to move along the inner wall of the steel pipe. This causes multiple arc-shaped polishing plates 25 to move and rotate simultaneously, polishing the inner wall of the steel pipe. In this way, steel pipes of different diameters or wall thicknesses can be polished without the need for operators to change or adjust the equipment, reducing processing costs and improving the practicality of the device. During the polishing process, the power switch of the vacuum cleaner is turned on, and the vacuum cleaner, together with the hose 14, performs air extraction on the inside of the connecting pipe 11, creating a negative pressure environment inside the connecting pipe 11. At this time, the dust and particles generated by the steel pipe enter the inside of the connecting pipe 11 through multiple through holes 12 and are collected by the vacuum cleaner through the hose 14. This can avoid polluting the working environment, prevent the impact on other equipment and products, reduce the workload of subsequent cleaning, and at the same time avoid workers being easily irritated by dust, thus preventing workers from developing respiratory diseases or other health problems.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An inner wall polishing apparatus for hot expansion of a steel pipe, comprising an operating table (1), characterized in that, The operating platform (1) is provided with a Z-shaped plate (10) at one end of the top, a moving mechanism for moving the Z-shaped plate (10) is arranged on one side of the top of the operating platform (1), a connecting pipe (11) is arranged through one end of the side wall of the Z-shaped plate (10), a plurality of through holes (12) are circularly arranged at equal intervals on the outer side wall of the connecting pipe (11), a first cylinder (19) is fixed at one end of the through hole (12), a circular seat (21) is rotatably connected to the outer side wall of one end of the first cylinder (19), a rotating mechanism for rotating the circular seat (21) is arranged in the first cylinder (19), a plurality of second sleeves (22) are circularly fixed at equal intervals on the outer side wall of the circular seat (21), a circular slider (23) is slidably connected to the inner side wall of each of the plurality of second sleeves (22), a connecting rod (24) is fixed to the top of each of the plurality of circular sliders (23), one end of each of the plurality of connecting rods (24) penetrates through one end of each of the plurality of circular sliders (23), an arc-shaped polishing plate (25) is fixed to one end of each of the plurality of connecting rods (24), a spring (26) is arranged on the inner side wall of each of the plurality of second sleeves (22), a fixing mechanism for fixing a steel pipe is arranged on the top of the operating platform (1), and a dust removal mechanism for dust removal is arranged at one end of the bottom of the operating platform (1).
2. The inner wall polishing apparatus for hot-expanding a steel pipe according to claim 1, characterized by The fixing mechanism comprises two horizontal plates (17) which are symmetrically arranged on the two sides of the top of the operating platform (1), and a plurality of V-shaped blocks (18) are linearly fixed at equal intervals on the inner side walls of the two horizontal plates (17), and first support plates (16) are fixed to the outer side walls of the two horizontal plates (17) at both ends.
3. The apparatus for polishing the inner wall of a steel pipe for hot expansion working according to claim 2, wherein Sliding grooves (2) are arranged on the symmetrically opposite ends of the top of the operating platform (1), bidirectional screws (3) are rotatably connected to the inner side walls of the two sliding grooves (2), first screw nuts (15) are sleeved on the symmetrically opposite ends of the two bidirectional screws (3), two groups of the four first screw nuts (15) are formed, the two groups of first screw nuts (15) are matched with the two bidirectional screws (3) respectively, the four first screw nuts (15) are fixed with the four first support plates (16) respectively, and first motors (4) are fixed to the outer side walls of the operating platform (1), and the output shafts of the two first motors (4) are fixed with the two bidirectional screws (3) respectively.
4. The inner wall polishing apparatus for hot-expanding a steel pipe according to claim 1, characterized by The moving mechanism comprises two second support plates (5) which are symmetrically fixed on one side of the top of the operating platform (1), the same screw rod (6) is rotatably connected to the inner side walls of the two second support plates (5), the same sliding rod (7) is fixed to the inner side walls of the two second support plates (5), the sliding rod (7) and the screw rod (6) are arranged in parallel, the second screw nut (9) is sleeved on the side wall of the sliding rod (7), the second screw nut (9) is matched with the screw rod (6), the second screw nut (9) and the other end of the Z-shaped plate (10) are fixed, and the outer side wall of one of the second support plates (5) is fixed with a second motor (8), and the output shaft of the second motor (8) is fixed with the screw rod (6).
5. The inner wall polishing apparatus for hot-expanding a steel pipe according to claim 1, characterized by The rotating mechanism comprises a third motor (20), which is fixed to the middle of the inner side wall of one end of the first cylinder (19), the output shaft of the third motor (20) penetrates the outer side wall of one end of the first cylinder (19), and the output shaft of the third motor (20) and the circular seat (21) are fixed.
6. The apparatus for polishing the inner wall of a steel pipe for hot expansion working according to claim 1, wherein The dust removal mechanism comprises a connecting box (13), which is fixed to one end of the bottom of the operating table (1), a dust collector is installed in the connecting box (13), a hose (14) is penetratingly arranged on the outer side wall of the connecting box (13), one end of the hose (14) is communicated with the dust inlet of the dust collector, and the other end of the hose (14) is communicated with the connecting pipe (11).