Elbow weld joint treatment device

Abstract

The invention relates to the technical field of weld joint treatment, and discloses an elbow weld joint treatment device which comprises a supporting seat, a hollow pipe is fixedly mounted at the top of the supporting seat, a rotatable adjusting ring is mounted at one end of the circumferential surface of the hollow pipe, and four pairs of extrusion rollers are annularly mounted on one side of the adjusting ring at equal intervals. The three pairs of extrusion rollers are located at one end of the hollow pipe, an adjusting motor for rotationally adjusting the adjusting ring is installed on the circumferential face of the hollow pipe, a polishing motor capable of being adjusted in a lifting mode is installed at one end of the hollow pipe, a polishing wheel is fixedly installed at the output end of the polishing motor, and a metal elbow and a metal straight pipe which are connected in a welded mode are arranged in the hollow pipe. The welding position of the metal elbow and the metal straight pipe is located under the grinding wheel. The elbow weld joint treatment device has the centering, clamping and fixing functions and the rotating and rotating functions, is convenient and fast to use and operate and stable and reliable to adjust and polish, and the performance of the elbow weld joint treatment device can meet the use requirement of elbow machining treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of weld processing, and in particular relates to an elbow weld processing device. Background Art

[0002] Elbow is a common pipe fitting, mainly used to connect two sections of pipes and change the flow direction of the fluid; according to different angles, elbows usually have various specifications such as 45 degrees, 90 degrees and 180 degrees, among which 90-degree elbows are the most commonly used; elbows are made of various materials, including carbon steel, stainless steel, plastic (such as PVC, PE), etc., to adapt to different usage environments and fluid characteristics.

[0003] Metal elbows are mostly connected to metal straight pipes by welding, and the welds need to be polished after welding to improve the overall aesthetics of the welded connection. Traditional weld grinding is mostly done manually, which has high labor intensity, low work efficiency, and cannot guarantee the uniformity of grinding. Therefore, improvements are needed to address the above problems. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an elbow weld processing device, comprising a support seat, a hollow tube is fixedly installed on the top of the support seat, a rotatable adjustment ring is installed at one end of the circumferential surface of the hollow tube, four pairs of extrusion rollers are equidistantly installed in a ring on one side of the adjustment ring, three pairs of extrusion rollers are located at one end of the hollow tube, an adjustment motor for rotating and adjusting the adjustment ring is installed on the circumferential surface of the hollow tube, a grinding motor that can be raised and lowered is installed at one end of the hollow tube, a grinding wheel is fixedly installed at the output end of the grinding motor, a metal elbow and a metal straight tube connected by welding are arranged inside the hollow tube, and the metal elbow and the metal The welding point of the straight tube is located directly below the grinding wheel. Four telescopic adjustment structures are installed at one end of the circumferential surface of the hollow tube. The four telescopic adjustment structures are arranged symmetrically. Four pairs of extrusion rollers are respectively installed at the opposite ends of the four telescopic adjustment structures. A rotating transmission structure is installed on one side of the four telescopic adjustment structures. The rotating transmission structure is connected in transmission between the adjustment ring and each pair of extrusion rollers. Four transmission separation structures are installed in a ring at equal distances on one side of the adjustment ring. The four transmission separation structures are connected in transmission with the four telescopic adjustment structures. A grinding feed adjustment structure is installed at one end of the hollow tube, and the grinding motor is installed on one side of the grinding feed adjustment structure.

[0005] Preferably, two limit rings are fixedly installed on one end of the circumferential surface of the hollow tube, and the adjustment ring is rotatably installed between the two limit rings. A transmission gear ring is fixedly installed on the other side of the adjustment ring, and a transmission gear is fixedly installed on the output end of the adjustment motor. The transmission gear is meshingly connected with the transmission gear ring, so that the adjustment ring can be effectively rotationally adjusted.

[0006] Preferably, the four telescopic adjustment structures each include a fixed block fixedly mounted on the circumferential surface of one of the limit retaining rings, four fixed blocks are fixedly mounted on the circumferential surface of one of the limit retaining rings at equal distances in a ring shape, an inverted U-shaped block is fixedly mounted on one side of the fixed block, a square through hole is opened at one end of the inverted U-shaped block, an outer square internal threaded tube is movably inserted inside the square through hole, the other end of the inverted U-shaped block is rotatably connected to a threaded shaft, the threaded shaft is threadedly connected to the outer square internal threaded tube, a large bevel gear is fixedly mounted on the top of the threaded shaft, and four arc-shaped bevel racks matching and meshingly connected to the large bevel gear are installed in a ring shape at equal distances on one side of the adjustment ring.

[0007] Preferably, one end of the outer square internally threaded tube is rotatably connected to a rotating shaft, a pair of extrusion rollers are fixedly connected to both ends of the rotating shaft, and a worm gear is fixedly installed at one end of the rotating shaft.

[0008] Preferably, the rotary transmission structure includes an inner square hollow tube rotatably connected to the middle part of the fixed block, a square plug shaft is movably inserted into the bottom of the inner square hollow tube, one side of the outer square internal threaded tube is rotatably connected to a worm A meshing with the worm gear, one end of the worm A is fixedly connected to one end of the square plug shaft, a small bevel gear is fixedly connected to the top of the inner square hollow tube, and a bevel gear ring matching and meshing with the small bevel gear is fixedly installed on one side of the adjustment ring, thereby effectively adjusting the extrusion roller and clamping the metal straight tube.

[0009] Preferably, the transmission separation structure includes a sliding groove opened on one side of the adjustment ring, four sliding grooves are opened in an annular manner at equal distances on one side of the adjustment ring and are arranged symmetrically with respect to the center, an I-shaped slider is slidably installed inside the four sliding grooves, four arc-shaped bevel racks are respectively fixedly installed on one end of the four I-shaped sliders, and a toggle block is fixedly installed on the other end of the four I-shaped sliders.

[0010] Preferably, an adjusting inner ring groove is opened in the middle of the adjusting ring and located between the insides of the four sliding grooves, a rotating ring plate is installed inside the adjusting inner ring groove, four toggle bevel grooves are opened in an annular manner at equal distances on one side of the rotating ring plate, and four toggle blocks are respectively located inside the four toggle bevel grooves.

[0011] Preferably, a worm gear is fixedly mounted on the circumferential surface of the rotating circle plate, and a worm B meshing with the worm gear is rotatably mounted inside the adjusting inner ring groove. One end of the worm B extends to the circumferential surface of the adjusting circle and an adjusting wheel A is fixedly mounted thereon, so that the four arc-shaped bevel racks can be separated from the four large bevel gears and the adjusting circle can be continuously rotated and adjusted.

[0012] Preferably, the grinding feed adjustment structure includes a mounting block fixedly mounted at one end of the hollow tube, a vertical adjustment groove is opened on one side of the mounting block, a threaded pin is rotatably mounted inside the vertical adjustment groove, the surface of the threaded pin is threadedly connected to the adjustment block, the grinding motor is mounted at one end of the adjustment block, and an adjustment wheel B is fixedly mounted on the top of the threaded pin, thereby effectively performing grinding feed control on the grinding motor and the grinding wheel, so that the grinding wheel can perform comprehensive and effective grinding operations on the welding point.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) During operation, the elbow weld processing device has a centering clamping and fixing function and a rotating and turning function by providing a support seat, a hollow tube, an adjustment ring, an extrusion roller, an adjustment motor, a grinding motor, a grinding wheel, a telescopic adjustment structure, a rotary transmission structure, a transmission separation structure and a grinding and feeding adjustment structure. The centering clamping and fixing function can place the elbow weld in an effective grinding position of the grinding wheel, thereby ensuring the accuracy of the weld grinding processing, and the rotating and turning function can rotate the fixed elbow so that the weld is effectively ground by the grinding wheel, thereby effectively improving the comprehensiveness and uniformity. At the same time, the weld processing device can adjust the grinding wheel to grind the weld stably and effectively. The weld processing device has a simple structural design, is convenient and easy to use and operate, and is stable and reliable in adjustment and grinding. Its performance can meet the use requirements of elbow processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0016] In the attached picture:

[0017] Figure 1 It is a schematic diagram of the front cross-section structure of the elbow weld processing device of the present invention;

[0018] Figure 2 For the present invention Figure 1 Schematic diagram of the local structure;

[0019] Figure 3 For the present invention Figure 2 The local structure of Figure 1 ;

[0020] Figure 4 For the present invention Figure 2 The local structure of Figure 2 ;

[0021] Figure 5 It is a side view structural schematic diagram of the present invention 3;

[0022] Figure 6 For the present invention Figure 5 A schematic cross-sectional structure diagram of;

[0023] In the figure: 1. Support seat; 2. Hollow tube; 3. Adjustment ring; 4. Extrusion roller; 5. Adjustment motor; 6. Grinding motor; 7. Grinding wheel; 8. Limiting ring; 9. Transmission gear ring; 10. Transmission gear; 11. Fixed block; 12. Inverted U-shaped block; 13. Square perforation; 14. External square internal threaded tube; 15. Thread; 16. Large bevel gear; 17. Arc bevel rack; 18. Rotating shaft; 19. Worm gear; 20. Inner square hollow tube; 21. Square plug shaft; 22. Worm A; 23. Bevel gear ring; 24. Sliding groove; 25. I-shaped slider; 26. Toggle block; 27. Adjust inner ring groove; 28. Rotating ring plate; 29. ​​Toggle oblique groove; 30. Worm wheel; 31. Worm B; 32. Adjusting wheel A; 33. Mounting block; 34. Vertical adjusting groove; 35. Threaded pin; 36. Adjusting block; 37. Adjusting wheel B. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Embodiment 1, by Figures 1 to 6 The present invention includes a support seat 1, a hollow tube 2 is fixedly installed on the top of the support seat 1, a rotatable adjustment ring 3 is installed on one end of the circumferential surface of the hollow tube 2, four pairs of extrusion rollers 4 are equidistantly installed on one side of the adjustment ring 3, three pairs of extrusion rollers 4 are located at one end of the hollow tube 2, an adjustment motor 5 for rotationally adjusting the adjustment ring 3 is installed on the circumferential surface of the hollow tube 2, a lifting and lowering adjustable grinding motor 6 is installed at one end of the hollow tube 2, a grinding wheel 7 is fixedly installed at the output end of the grinding motor 6, a metal elbow and a metal straight tube connected by welding are provided inside the hollow tube 2, and the welding point of the metal elbow and the metal straight tube is located directly below the grinding wheel 7.

[0026] Four telescopic adjustment structures are installed at one end of the circumferential surface of the hollow tube 2, and the four telescopic adjustment structures are arranged symmetrically. Four pairs of extrusion rollers 4 are respectively installed at the opposite ends of the four telescopic adjustment structures. A rotating transmission structure is installed on one side of the four telescopic adjustment structures. The rotating transmission structure is connected in transmission between the adjustment ring 3 and each pair of extrusion rollers 4. Four transmission separation structures are installed in a ring at equal distances on one side of the adjustment ring 3. The four transmission separation structures are connected in transmission with the four telescopic adjustment structures. A grinding feed adjustment structure is installed at one end of the hollow tube 2, and a grinding motor 6 is installed on one side of the grinding feed adjustment structure.

[0027] Two limit rings 8 are fixedly installed at one end of the circumferential surface of the hollow tube 2, and the adjustment ring 3 is rotatably installed between the two limit rings 8. A transmission gear ring 9 is fixedly installed on the other side of the adjustment ring 3, and a transmission gear 10 is fixedly installed on the output end of the adjustment motor 5. The transmission gear 10 is meshed and connected with the transmission gear ring 9, so that the adjustment ring 3 can be effectively rotated and adjusted.

[0028] By starting the adjustment motor 5 to rotate the transmission gear 10 , the rotation of the transmission gear 10 will drive the transmission gear ring 9 to make the adjustment ring 3 rotate and adjust between the two limit rings 8 .

[0029] The grinding feed adjustment structure includes a mounting block 33 fixedly mounted on one end of the hollow tube 2, a vertical adjustment slot 34 is provided on one side of the mounting block 33, a threaded pin 35 is rotatably mounted inside the vertical adjustment slot 34, an adjustment block 36 is threadedly connected to the surface of the threaded pin 35, a grinding motor 6 is mounted on one end of the adjustment block 36, an adjustment wheel B37 is fixedly mounted on the top of the threaded pin 35, thereby effectively performing grinding feed control on the grinding motor 6 and the grinding wheel 7, so that the grinding wheel 7 can perform a comprehensive and effective grinding operation on the welding position.

[0030] The threaded pin 35 is rotated by adjusting wheel B37, and the rotation of threaded pin 35 will cause adjusting block 36 to move downward, and the downward movement of adjusting block 36 will drive grinding motor 6 and grinding wheel 7 to move downward, and the downward movement of grinding wheel 7 will contact with the welding part, and then the grinding motor 6 is started to drive grinding wheel 7 to rotate, and the welding part is rotated by the rotation of extrusion roller 4, and at the same time, the downward movement of grinding motor 6 and grinding wheel 7 is slowly adjusted, so that grinding wheel 7 can perform comprehensive and effective grinding treatment on the weld.

[0031] The elbow weld processing device has a centering clamping and fixing function and a rotation and turning function. The centering clamping and fixing function can place the elbow weld in an effective grinding position of the grinding wheel, thereby ensuring the accuracy of the weld grinding processing, and the rotation and turning function can rotate the fixed elbow so that the weld is effectively ground by the grinding wheel, thereby effectively improving the comprehensiveness and uniformity. At the same time, the weld processing device can adjust the grinding wheel to perform stable and effective grinding of the weld. The weld processing device has a simple structural design, is convenient and quick to use and operate, and is stable and reliable to adjust and grind. Its performance can meet the use requirements of elbow processing.

[0032] Embodiment 2, on the basis of embodiment 1, the four telescopic adjustment structures all include a fixed block 11 fixedly installed on the circumferential surface of one of the limit retaining rings 8, the four fixed blocks 11 are fixedly installed on the circumferential surface of one of the limit retaining rings 8 in a ring at equal distances, an inverted U-shaped block 12 is fixedly installed on one side of the fixed block 11, a square through hole 13 is opened at one end of the inverted U-shaped block 12, an outer square internal threaded tube 14 is movably inserted inside the square through hole 13, the other end of the inverted U-shaped block 12 is rotatably connected with a threaded shaft 15, the threaded shaft 15 is threadedly connected to the outer square internal threaded tube 14, a large bevel gear 16 is fixedly installed on the top of the threaded shaft 15, and four arc-shaped bevel racks 17 matching and meshingly connected with the large bevel gear 16 are installed in a ring at equal distances on one side of the adjustment ring 3.

[0033] One end of the outer square internal threaded tube 14 is rotatably connected to a rotating shaft 18, a pair of extrusion rollers 4 are fixedly connected to the two ends of the rotating shaft 18, a worm gear 19 is fixedly installed at one end of the rotating shaft 18, and the rotary transmission structure includes an inner square hollow tube 20 rotatably connected to the middle of the fixed block 11, and a square plug shaft 21 is movably inserted at the bottom of the inner square hollow tube 20, and one side of the outer square internal threaded tube 14 is rotatably connected to a worm A22 meshing with the worm gear 19, one end of the worm A22 is fixedly connected to one end of the square plug shaft 21, and a small bevel gear is fixedly connected to the top of the inner square hollow tube 20, and a bevel gear ring 23 matching and meshing with the small bevel gear is fixedly installed on one side of the adjustment ring 3, so that the extrusion roller 4 can be effectively adjusted and the metal straight tube can be clamped and fixed;

[0034] When the adjusting ring 3 rotates, it will drive the four arc-shaped bevel racks 17 to rotate and move, and the rotation and movement of the four arc-shaped bevel racks 17 will drive the four large bevel gears 16 to rotate, and the rotation of the four large bevel gears 16 will drive the four threaded shafts 15 to rotate, and the rotation of the four threaded shafts 15 will make the four outer square internal threaded tubes 14 move and adjust inside the four square through holes 13, and finally make the four pairs of extrusion rollers 4 move relative to each other to clamp and fix the metal straight tube;

[0035] The movement of the outer square internal threaded tube 14 will drive the worm A22 and the square plug shaft 21 to move, so that the square plug shaft 21 is moved out from the inside of the inner square hollow tube 20 and maintains an effective connection. At the same time, the rotation of the adjusting ring 3 will drive the bevel gear ring 23 to rotate. The rotation of the bevel gear ring 23 will transmit the small bevel gear and drive the inner square hollow tube 20 to rotate. The rotation of the inner square hollow tube 20 will drive the square plug shaft 21 and the worm A22 to rotate. The rotation of the worm A22 will transmit the worm wheel 19 and the rotating shaft 18 drives the extrusion roller 4 to rotate. The rotation of the extrusion roller 4 will rotate and adjust the metal straight tube that is clamped and fixed. The rotation of the metal straight tube will drive the metal elbow connected by welding to rotate, thereby rotating the welding point.

[0036] Embodiment 3, on the basis of embodiment 2, the transmission separation structure includes a sliding groove 24 opened on one side of the adjustment ring 3, four sliding grooves 24 are opened on one side of the adjustment ring 3 at equal distances in an annular manner and are arranged symmetrically in the center, an I-shaped slider 25 is slidably installed inside the four sliding grooves 24, four arc-shaped inclined racks 17 are respectively fixedly installed on one end of the four I-shaped sliders 25, and a toggle block 26 is fixedly installed on the other end of the four I-shaped sliders 25, an inner ring groove 27 is opened in the middle of the adjustment ring 3 and located between the inner parts of the four sliding grooves 24, and the inner ring groove 27 is adjusted. A rotating circle plate 28 is installed on the part, and four equidistantly arranged inclined shifting grooves 29 are provided in an annular manner on one side of the rotating circle plate 28. The four shifting blocks 26 are respectively located inside the four inclined shifting grooves 29. A worm wheel 30 is fixedly installed on the circumferential surface of the rotating circle plate 28. A worm B31 meshingly connected with the worm wheel 30 is rotatably installed inside the inner ring groove 27. One end of the worm B31 extends to the circumferential surface of the adjusting circle 3 and is fixedly installed with an adjusting wheel A32, so that the four arc-shaped bevel racks 17 can be separated from the four large bevel gears 16 and the adjusting circle 3 can be continuously rotated and adjusted.

[0037] After the four pairs of extrusion rollers 4 are clamped and fixed to the metal straight tubes, the worm B31 is rotated by the adjusting wheel A32, and the rotation of the worm B31 will drive the worm wheel 30 to rotate the rotating circle plate 28, and the rotation of the rotating circle plate 28 will drive the four toggle inclined grooves 29 to move, and the movement of the four toggle inclined grooves 29 will toggle and slide the four I-shaped sliders 25 through the sliding grooves 24 and the toggle blocks 26, and the sliding movement of the four I-shaped sliders 25 will drive the four arc-shaped inclined racks 17 to move and separate from the four large bevel gears 16;

[0038] Then, the small bevel gear ring 23 is rotated by continuing to rotate the adjustment ring 3, and the four pairs of extrusion rollers 4 are rotated. The rotation of the four pairs of extrusion rollers 4 will adjust the rotation of the metal straight pipes that are clamped and fixed. The rotation of the metal straight pipes will drive the metal elbows connected by welding to rotate, thereby rotating the welding points.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elbow weld processing device, comprising a support seat (1), characterized in that: A hollow tube (2) is fixedly mounted on the top of the support seat (1); a rotatable adjustment ring (3) is mounted on one end of the circumferential surface of the hollow tube (2); four pairs of squeezing rollers (4) are equidistantly mounted in a circular shape on one side of the adjustment ring (3); three pairs of squeezing rollers (4) are located at one end of the hollow tube (2); an adjustment motor (5) for rotating and adjusting the adjustment ring (3) is mounted on the circumferential surface of the hollow tube (2); a lifting and lowering adjustable grinding motor (6) is mounted on one end of the hollow tube (2); a grinding wheel (7) is fixedly mounted on the output end of the grinding motor (6); a metal elbow and a metal straight tube connected by welding are arranged inside the hollow tube (2); and the welding point between the metal elbow and the metal straight tube is located directly below the grinding wheel (7); Four telescopic adjustment structures are installed at one end of the circumferential surface of the hollow tube (2), and the four telescopic adjustment structures are arranged symmetrically. Four pairs of extrusion rollers (4) are installed at opposite ends of the four telescopic adjustment structures respectively. A rotating transmission structure is installed on one side of the four telescopic adjustment structures, and the rotating transmission structure is connected in transmission between the adjustment ring (3) and each pair of extrusion rollers (4). Four transmission separation structures are installed in an annular manner at equal distances on one side of the adjustment ring (3), and the four transmission separation structures are connected in transmission with the four telescopic adjustment structures. A grinding feed adjustment structure is installed at one end of the hollow tube (2), and a grinding motor (6) is installed on one side of the grinding feed adjustment structure.

2. The elbow weld processing device according to claim 1, characterized in that: Two limit retaining rings (8) are fixedly mounted on one end of the circumferential surface of the hollow tube (2); the adjustment ring (3) is rotatably mounted between the two limit retaining rings (8); a transmission gear ring (9) is fixedly mounted on the other side of the adjustment ring (3); a transmission gear (10) is fixedly mounted on the output end of the adjustment motor (5); and the transmission gear (10) is meshingly connected with the transmission gear ring (9).

3. The elbow weld processing device according to claim 2, characterized in that: The four telescopic adjustment structures each comprise a fixed block (11) fixedly mounted on the circumferential surface of one of the limit retaining rings (8); the four fixed blocks (11) are fixedly mounted on the circumferential surface of one of the limit retaining rings (8) at equal intervals in an annular manner; an inverted U-shaped block (12) is fixedly mounted on one side of the fixed block (11); a square through hole (13) is provided at one end of the inverted U-shaped block (12); an outer square internal threaded tube (14) is movably inserted inside the square through hole (13); a threaded shaft (15) is rotatably connected to the other end of the inverted U-shaped block (12); the threaded shaft (15) is threadedly connected to the outer square internal threaded tube (14); a large bevel gear (16) is fixedly mounted on the top of the threaded shaft (15); and four arc-shaped bevel racks (17) matching and meshingly connected to the large bevel gear (16) are fixedly mounted on one side of the adjustment ring (3) at equal intervals in an annular manner.

4. The elbow weld processing device according to claim 3, characterized in that: One end of the outer square internally threaded tube (14) is rotatably connected to a rotating shaft (18), a pair of extrusion rollers (4) are fixedly connected to both ends of the rotating shaft (18), and a worm gear (19) is fixedly installed at one end of the rotating shaft (18).

5. The elbow weld processing device according to claim 4, characterized in that: The rotary transmission structure comprises an inner square hollow tube (20) rotatably connected to the middle of a fixed block (11); a square plug shaft (21) is movably inserted at the bottom of the inner square hollow tube (20); a worm A (22) meshingly connected to a worm wheel (19) is rotatably connected to one side of an outer square internally threaded tube (14); one end of the worm A (22) is fixedly connected to one end of the square plug shaft (21); a small bevel gear is fixedly connected to the top of the inner square hollow tube (20); and a bevel gear ring (23) matching and meshingly connected to the small bevel gear is fixedly installed on one side of an adjustment ring (3).

6. The elbow weld processing device according to claim 3, characterized in that: The transmission separation structure comprises a sliding groove (24) provided on one side of the adjustment ring (3); four sliding grooves (24) are provided on one side of the adjustment ring (3) at equal intervals in an annular manner and are arranged symmetrically with respect to the center; an I-shaped slider (25) is slidably mounted inside each of the four sliding grooves (24); four arc-shaped inclined racks (17) are respectively fixedly mounted on one end of the four I-shaped sliders (25); and a toggle block (26) is fixedly mounted on the other end of each of the four I-shaped sliders (25).

7. The elbow weld processing device according to claim 6, characterized in that: An adjusting inner ring groove (27) is provided in the middle of the adjusting ring (3) and located between the insides of the four sliding grooves (24); a rotating ring plate (28) is installed inside the adjusting inner ring groove (27); four shifting oblique grooves (29) are provided in an annular manner and at equal distances on one side of the rotating ring plate (28); and four shifting blocks (26) are respectively located inside the four shifting oblique grooves (29).

8. The elbow weld processing device according to claim 7, characterized in that: A worm wheel (30) is fixedly mounted on the circumferential surface of the rotating ring plate (28), and a worm B (31) meshingly connected with the worm wheel (30) is rotatably mounted inside the adjusting inner ring groove (27), one end of the worm B (31) extends to the circumferential surface of the adjusting ring (3) and is fixedly mounted with an adjusting wheel A (32).

9. The elbow weld processing device according to claim 1, characterized in that: The grinding feed adjustment structure comprises a mounting block (33) fixedly mounted on one end of the hollow tube (2); a vertical adjustment groove (34) is provided on one side of the mounting block (33); a threaded pin (35) is rotatably mounted inside the vertical adjustment groove (34); an adjustment block (36) is threadedly connected to the surface of the threaded pin (35); a grinding motor (6) is mounted on one end of the adjustment block (36); and an adjustment wheel B (37) is fixedly mounted on the top of the threaded pin (35).

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