Grinding device for welding seam in spiral welding steel pipe

Abstract

The utility model discloses a spiral welding steel pipe inner welding seam polishing device, which relates to the technical field of welding seam polishing, and has the technical key points that the spiral welding steel pipe inner welding seam polishing device comprises a base and a fixed plate arranged at the upper end of the base, the fixed plate is provided with a polishing mechanism for polishing a welding seam, and the polishing mechanism comprises a through groove formed in the fixed plate; a moving block is slidably connected in the through groove in a penetrating mode, and inner threaded pipes are rotatably connected to the two sides of the moving block in a penetrating mode. Under the elastic action of the springs between the multiple positioning blocks and the rotating ring, counter-acting force provided by the multiple springs acts on a steel pipe, the multiple positioning blocks achieve the effect of limiting the position of the steel pipe, and then the steel pipe is fixed through threaded connection between a movable screw and an inner threaded pipe and the limiting effect of a limiting frame on the movable screw. And the movable screw rod moves to drive the limiting frame to move, so that the position of the grinding machine is moved, the device can grind different positions of the steel pipe, and the adaptability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of weld grinding technology, specifically a device for grinding the inner weld of spiral welded steel pipes. Background Technology

[0002] A weld is a joint created during the metal welding process, used to connect two metal components. It is typically formed by molten metal filling the weld joint and has a certain degree of strength and sealing.

[0003] After welding, spiral welded steel pipes typically undergo grinding of their inner weld seams. However, existing grinding devices cannot be adjusted in height or distance from the pipe to meet specific needs, reducing their adaptability. Furthermore, the lack of a positioning device for the pipe during grinding causes it to shift position, compromising grinding stability. Even devices designed to position the pipe cannot rotate it during the positioning process, complicating the comprehensive grinding of the inner weld seams. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a grinding device for the inner weld seam of spiral welded steel pipes. This device solves the problems of existing grinding devices for the inner weld seam of steel pipes being unable to adjust the position of the grinding device according to actual conditions, and being unable to rotate the steel pipe during the grinding process, thus failing to achieve comprehensive grinding of the steel pipe.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: including a base and a fixing plate installed on its upper end, wherein the fixing plate is provided with a grinding mechanism for grinding the weld seam.

[0008] The grinding mechanism includes a through groove on a fixed plate, a movable block that is slidably connected through the through groove, internally threaded tubes that are rotatably connected through both sides of the movable block, a movable screw that is threaded through the internally threaded tubes, a limiting frame that is provided on the outer walls of both ends of the movable screw, two symmetrically arranged waist grooves on the fixed plate, the limiting frame passing through the two waist grooves and slidably connected to them, and a grinding machine that is provided on the outer wall of the right side of the limiting frame.

[0009] Preferably, the upper end of the base is provided with a fixed frame, and a rotating ring is rotatably connected through the fixed frame. Multiple circumferentially arranged through rods are slidably connected through the outer walls of both ends of the rotating ring. Each of the multiple through rods is provided with a positioning block at its end, and each of the multiple positioning blocks has an inclined surface on its left side wall.

[0010] Preferably, the front end of the fixed frame is provided with two symmetrically arranged fixed blocks, and a rotating rod is rotatably connected between the two fixed blocks. Both ends of the rotating rod are provided with transmission wheels, and both ends of the rotating ring are provided with toothed rings that cooperate with the transmission wheels.

[0011] Preferably, the upper end of the fixed plate is provided with a power motor, and a lifting screw is rotatably connected through the through slot to the upper end of the fixed plate. The upper end of the lifting screw is connected to the end of the output shaft of the power motor, and the lifting screw passes through the moving block and is threadedly connected to it.

[0012] Preferably, the upper end of the moving block is provided with a servo motor, and the end of the output shaft of the servo motor and the outer wall of the internal threaded tube are both provided with gears, and the two gears mesh with each other.

[0013] Preferably, the left side wall of the fixing block is provided with a mounting frame, the inner wall of the mounting frame is provided with a drive motor, and one end of the rotating rod is connected to the end of the output shaft of the drive motor.

[0014] Preferably, the plurality of positioning blocks are elastically connected to the inner wall of the rotating ring by springs, and the plurality of springs are respectively sleeved on the outer wall of the plurality of through rods.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a grinding device for the inner weld seam of spiral welded steel pipes, which has the following beneficial effects:

[0017] This invention utilizes the elastic action of springs between multiple positioning blocks and a rotating ring to apply reaction forces to the steel pipe, thus restricting the position of the steel pipe. The threaded connection between the moving screw and the internally threaded pipe, along with the limiting frame's role in limiting the moving screw, causes the moving screw to move, driving the limiting frame and thus moving the grinding machine. This allows the device to grind different parts of the steel pipe, improving its adaptability. The threaded connection between the lifting screw and the moving block, and the sliding connection between the moving block and the through groove, allows the moving block to move, driving the grinding machine. The height of the grinding machine can be adjusted according to the inner diameter of the steel pipe, enhancing the device's practicality. Finally, the rotation of the rotating ring causes the steel pipe to rotate, achieving comprehensive grinding of the inner weld seams of the steel pipe, providing convenience for users. Attached Figure Description

[0018] Figure 1 This is a left-side view of the overall structure of this utility model;

[0019] Figure 2 This is a right-side view of the overall structure of this utility model;

[0020] Figure 3This utility model Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0021] In the picture:

[0022] 1. Base;

[0023] 2. Fixed frame;

[0024] 3. Rotating ring;

[0025] 4. Through rod;

[0026] 5. Positioning block;

[0027] 6. Incline;

[0028] 7. Spring;

[0029] 8. Fixing block;

[0030] 9. Rotating rod;

[0031] 10. Toothed ring;

[0032] 11. Transmission wheel;

[0033] 12. Drive motor;

[0034] 13. Fixing plate;

[0035] 14. Through groove;

[0036] 15. Power motor;

[0037] 16. Grinding machine;

[0038] 17. Limiting frame;

[0039] 18. Lifting screw;

[0040] 19. Move the screw;

[0041] 20. Move block;

[0042] 21. Internally threaded pipe;

[0043] 22. Servo motor;

[0044] 23. Gear. Detailed Implementation

[0045] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0046] This utility model provides a technical solution for a grinding device for the inner weld seam of spiral welded steel pipes:

[0047] Please see Figures 1-3 A grinding device for the inner weld of a spiral welded steel pipe includes a base 1 and a fixed plate 13 installed on its upper end. The fixed plate 13 is provided with a grinding mechanism for grinding the weld.

[0048] The grinding mechanism includes a through groove 14 on a fixed plate 13. A movable block 20 is slidably connected through the through groove 14. An internally threaded tube 21 is rotatably connected through both sides of the movable block 20. A movable screw 19 is threadedly connected through the internally threaded tube 21. A limiting frame 17 is provided on the outer walls of both ends of the movable screw 19. Two symmetrically arranged waist grooves are provided on the fixed plate 13. The limiting frame 17 passes through the two waist grooves and is slidably connected to them. A grinding machine 16 is provided on the outer wall of the right side of the limiting frame 17. By utilizing the threaded connection between the movable screw 19 and the internally threaded tube 21, and the limiting action of the limiting frame 17 on the movable screw 19, the movable screw 19 moves, driving the limiting frame 17 to move, thereby moving the position of the grinding machine 16. This allows the device to grind different positions of the steel pipe, improving the adaptability of the device.

[0049] Furthermore, a fixed frame 2 is provided at the upper end of the base 1, and a rotating ring 3 is rotatably connected through the fixed frame 2. Multiple circumferentially arranged through rods 4 are slidably connected through both ends of the outer wall of the rotating ring 3. Each end of the multiple through rods 4 is provided with a positioning block 5, and each left side wall of the multiple positioning blocks 5 is provided with an inclined surface 6.

[0050] Furthermore, the front end of the fixed frame 2 is provided with two symmetrically arranged fixed blocks 8, and a rotating rod 9 is rotatably connected between the two fixed blocks 8. Both ends of the rotating rod 9 are provided with transmission wheels 11, and both ends of the rotating ring 3 are provided with toothed rings 10 that cooperate with the transmission wheels 11.

[0051] Furthermore, a power motor 15 is provided at the upper end of the fixed plate 13, and a lifting screw 18 is rotatably connected to the upper end of the fixed plate 13 through the through groove 14. The upper end of the lifting screw 18 is connected to the end of the output shaft of the power motor 15. The lifting screw 18 passes through the moving block 20 and is threadedly connected to it. By utilizing the threaded connection between the lifting screw 18 and the moving block 20, and the sliding connection between the moving block 20 and the through groove 14, the moving block 20 moves, driving the grinding machine 16 to move. This allows the height of the grinding machine 16 to be adjusted according to the inner diameter of the steel pipe, improving the practicality of the device.

[0052] Furthermore, a servo motor 22 is provided at the upper end of the moving block 20. The output shaft of the servo motor 22 and the outer wall of the internal threaded tube 21 are both provided with gears 23. The two gears 23 mesh with each other, and the rotating ring 3 is rotated to drive the steel pipe to rotate, thereby realizing the comprehensive grinding of the weld seam inside the steel pipe, bringing convenience to people.

[0053] Furthermore, the left fixed block 8 has a mounting frame on its side wall, and a drive motor 12 is provided on the inner wall of the mounting frame. One end of the rotating rod 9 is connected to the end of the output shaft of the drive motor 12.

[0054] Furthermore, multiple positioning blocks 5 are elastically connected to the inner wall of the rotating ring 3 by springs 7. Multiple springs 7 are respectively sleeved on the outer wall of multiple through rods 4. By utilizing the elastic action of the springs 7 between the multiple positioning blocks 5 and the rotating ring 3, the reaction force provided by the multiple springs 7 acts on the steel pipe, so that the multiple positioning blocks 5 achieve the effect of restricting the position of the steel pipe.

[0055] In practical use, the working principle of this utility model is as follows:

[0056] When grinding the inner weld of the spiral welded steel pipe, the steel pipe to be ground is placed in the rotating ring 3, so that the outer wall of one end of the steel pipe contacts multiple inclined surfaces 6. The steel pipe is pushed, and the steel pipe is pushed by the through sliding connection of the through rod 4 between the positioning block 5 and the rotating ring 3, so that the steel pipe squeezes the multiple positioning blocks 5 to move, so that the steel pipe is between the multiple positioning blocks 5 and one end of the steel pipe contacts the side wall of the fixed plate 13. At this time, under the elastic action of the spring 7 between the multiple positioning blocks 5 and the rotating ring 3, the reaction force provided by the multiple spring 7 acts on the steel pipe, so that the multiple positioning blocks 5 achieve the effect of restricting the position of the steel pipe.

[0057] During grinding, the grinding machine 16 is rotated (the grinding machine 16 is existing technology, so its related structure is not described in detail in this figure), and the servo motor 22 is started. Under the meshing action of the gear 23 between the servo motor 22 and the internal threaded tube 21, the internal threaded tube 21 is rotated. Under the threaded connection between the moving screw 19 and the internal threaded tube 21, and the limiting action of the limiting frame 17 on the moving screw 19, the moving screw 19 moves and drives the limiting frame 17 to move, thereby moving the position of the grinding machine 16. This allows the device to grind different positions of the steel pipe, improving the adaptability of the device.

[0058] When adjusting the height of the grinder 16, the power motor 5 is started, which drives the lifting screw 18 to rotate. The threaded connection between the lifting screw 18 and the moving block 20, and the sliding connection between the moving block 20 and the through groove 14, allow the moving block 20 to move and drive the grinder 16 to move. This allows the height of the grinder 16 to be adjusted according to the inner diameter of the steel pipe, improving the practicality of the device.

[0059] When the steel pipe is rotated according to the actual grinding requirements, the drive motor 12 is started, which drives the rotating rod 9 to rotate. By utilizing the meshing of the transmission wheel on the outer wall of the rotating rod 9 with the toothed ring 10, and the rotational connection between the rotating ring 3 and the fixed frame 1, the rotating ring 3 rotates and drives the steel pipe to rotate under the positioning action of multiple positioning blocks 5, thereby realizing the comprehensive grinding of the weld seam inside the steel pipe and bringing convenience to people.

[0060] In summary, the spiral welded steel pipe internal weld grinding device, through improvement and optimization of its working principle, solves the problems of existing devices for grinding the internal weld of steel pipes, such as the inability to adjust the position of the grinding device according to the actual situation, the inability to rotate the steel pipe during the grinding process, and the inability to achieve comprehensive grinding of the steel pipe.

[0061] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A device for grinding the inner weld of a spiral welded steel pipe, comprising a base (1) and a fixed plate (13) mounted on the upper end of the base, characterized in that: The fixing plate (13) is provided with a grinding mechanism for grinding the weld seam. The grinding mechanism includes a through groove (14) on a fixed plate (13), a movable block (20) is slidably connected through the through groove (14), an internally threaded tube (21) is rotatably connected through both sides of the movable block (20), a movable screw (19) is threadedly connected through the internally threaded tube (21), a limiting frame (17) is provided on the outer walls of both ends of the movable screw (19), two symmetrically arranged waist grooves are provided on the fixed plate (13), the limiting frame (17) passes through the two waist grooves and is slidably connected to them, and a grinding machine (16) is provided on the outer wall of the right side of the limiting frame (17).

2. The apparatus according to claim 1, wherein: The base (1) has a fixed frame (2) at its upper end. A rotating ring (3) is rotatably connected through the fixed frame (2). Multiple circumferentially arranged through rods (4) are slidably connected through both ends of the outer wall of the rotating ring (3). Each end of the multiple through rods (4) is provided with a positioning block (5). Each left side wall of the multiple positioning blocks (5) is provided with an inclined surface (6).

3. The apparatus according to claim 2, wherein: The front end of the fixed frame (2) is provided with two symmetrically arranged fixed blocks (8), and a rotating rod (9) is rotatably connected between the two fixed blocks (8). Both ends of the rotating rod (9) are provided with transmission wheels (11), and both ends of the rotating ring (3) are provided with toothed rings (10) that cooperate with the transmission wheels (11).

4. The apparatus according to claim 3, wherein: The upper end of the fixed plate (13) is provided with a power motor (15). The through groove (14) is rotatably connected to the upper end of the fixed plate (13) with a lifting screw (18). The upper end of the lifting screw (18) is connected to the end of the output shaft of the power motor (15). The lifting screw (18) passes through the moving block (20) and is threadedly connected to it.

5. The apparatus of claim 4, wherein: The upper end of the moving block (20) is provided with a servo motor (22), and the end of the output shaft of the servo motor (22) and the outer wall of the internal threaded tube (21) are both provided with gears (23), and the two gears (23) mesh with each other.

6. The apparatus of claim 5, wherein: The left side of the fixed block (8) is provided with a mounting frame, and the inner wall of the mounting frame is provided with a drive motor (12). One end of the rotating rod (9) is connected to the end of the output shaft of the drive motor (12).

7. The spiral welded steel pipe inner weld grinding device according to claim 6, characterized in that: The multiple positioning blocks (5) are elastically connected to the inner wall of the rotating ring (3) by springs (7), and the multiple springs (7) are respectively sleeved on the outer wall of the multiple through rods (4).

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