Inner and outer diameter grinding and finishing system for steel pipe welding

Abstract

The invention relates to the field of grinding devices, in particular to an inner and outer diameter grinding and finishing system for steel pipe welding, and aims to solve the problems that in the prior art, a steel pipe inner and outer diameter grinding device is long in machining time, and chippings in a pipe are inconvenient to clean, the following scheme is provided that the inner and outer diameter grinding and finishing system comprises a machining table, and an annular material receiving groove is formed in the top face of the machining table; a discharge hole is formed in the bottom of the receiving groove; the material fixing mechanism comprises a fixing sleeve, a fixing disc rotationally connected to the periphery of the fixing sleeve in a sleeving mode, a three-jaw chuck installed at one end of the fixing sleeve, a bottom plate rotationally connected to the top face of the machining table through a rotating shaft and a supporting column fixed to the top face of the bottom plate, and the supporting column is hinged to the bottom face of the fixing disc. A driving piece used for driving the fixing sleeve to rotate is installed on the fixing disc. The inner diameter and the outer diameter of the steel pipe can be conveniently polished at the same time, and chippings in the steel pipe can be conveniently cleaned away when the direction of the steel pipe is changed.

Description

Technical Field

[0001] The invention relates to the field of grinding devices, and in particular to an inner and outer diameter grinding and finishing system for steel pipe welding. Background Art

[0002] When welding steel pipes, in order to ensure that the weld is smoother and stronger, the welds often need to be polished. At present, the common method of polishing steel pipes is to manually use a grinding disc to polish the inner and outer diameters and ports of the steel pipes. When this method is used for polishing, on the one hand, the steel pipe needs to be fixed during polishing, and on the other hand, the inner and outer diameters of the steel pipe need to be polished separately, which wastes a lot of time.

[0003] In addition, when grinding the inner diameter of the steel pipe, a lot of debris will remain inside the steel pipe and cannot be cleaned in time. For this reason, this scheme proposes an inner and outer diameter grinding and finishing system for steel pipe welding. Summary of the invention

[0004] The invention provides an inner and outer diameter grinding and finishing system for steel pipe welding, which solves the problems of long processing time and inconvenience in cleaning debris in the steel pipe inner and outer diameter grinding devices in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A grinding and finishing system for inner and outer diameters of steel pipe welding, comprising:

[0007] A processing table, wherein the top surface of the processing table is provided with an annular material receiving groove, and the bottom of the material receiving groove is provided with a discharge hole;

[0008] The material fixing mechanism comprises a fixed sleeve, a fixed disk rotatably sleeved on the outer periphery of the fixed sleeve, a three-jaw chuck mounted on one end of the fixed sleeve, a bottom plate rotatably connected to the top surface of the processing table through a rotating shaft, and a support column fixed to the top surface of the bottom plate, wherein the support column is hinged to the bottom surface of the fixed disk, and a driving member for driving the fixed sleeve to rotate is installed on the fixed disk;

[0009] A grinding mechanism, comprising a side plate fixed to the side of the processing table, a first fixed plate fixed to the top surface of the side plate, and a grinding assembly mounted on the first fixed plate through a first telescopic member, wherein the grinding assembly comprises a mounting plate fixed to the output end of the first telescopic member, two grinding rods movably mounted on the mounting plate, and an adjustment assembly mounted on the mounting plate for adjusting the positions of the two grinding rods;

[0010] A steering mechanism, which is mounted on the bottom surface of the processing table and is used to drive the bottom plate to rotate;

[0011] The rocking mechanism is installed on the processing table and is used to drive the fixed plate to rock when the base plate rotates.

[0012] Through the above technical solution, not only can the inner and outer diameters of the steel pipe be polished at the same time, but also the debris inside the steel pipe can be cleaned up conveniently when the direction of the steel pipe is changed.

[0013] As a further improvement of the above scheme, the fixed disk is rotatably sleeved on the outer periphery of the fixed sleeve, and the driving member includes a driven gear sleeved on the outer periphery of the fixed sleeve and a driving motor installed on the side wall of the fixed disk, and the outer periphery of the output shaft of the driving motor is sleeved with a driving gear meshing with the driven gear.

[0014] The above technical solution facilitates driving the fixing sleeve to rotate.

[0015] As a further improvement of the above scheme, the bottom of the rotating shaft extends to the bottom of the processing table and is fixed with a connecting gear. The steering mechanism includes a second telescopic member installed on the bottom surface of the processing table and a rack fixed on the output end of the second telescopic member, and the rack is meshed with the connecting gear.

[0016] Through the above technical solution, the rotating shaft can be driven to rotate when the first telescopic member is extended or retracted.

[0017] As a further improvement of the above scheme, a sliding groove is provided in the radial direction of the fixing sleeve on one side of the first fixing plate facing the fixing sleeve, and a through hole is provided on the top surface of the first fixing plate that is connected to the sliding groove. The adjusting assembly includes a bidirectional screw movably arranged in the sliding groove and two connecting blocks that are respectively threadedly sleeved on two opposite threaded areas on the outer periphery of the bidirectional screw, and the bottom of the bidirectional screw passes through the through hole and extends to the top of the first fixing plate, one end of the two connecting blocks extends to the outside of the side of the sliding groove close to the fixing sleeve and is fixed with a mounting tube, one end of the grinding rod is inserted into the mounting tube, a mounting block is provided on the side of the first fixing plate away from the fixing sleeve, and a limit frame is provided on the outer peripheral movable sleeve of the mounting block, the limit frame is fixed on the outer wall of the first fixing plate, and a positioning bolt for locking the mounting block is installed on the limit frame, and the other ends of the two connecting blocks are fixedly connected to the mounting block.

[0018] Through the above technical solution, the positions of the two grinding rods and the distance between the two grinding rods can be easily adjusted.

[0019] As a further improvement of the above solution, the outer peripheral movable sleeve of the bidirectional screw is provided with a positioning sleeve, the bottom of the positioning sleeve is fixedly connected to the top surface of the first fixed plate, and the outer periphery of the positioning sleeve is threaded with a fixing bolt for locking the bidirectional screw.

[0020] Through the above technical solution, the bidirectional screw can be easily locked.

[0021] As a further improvement of the above scheme, the swing mechanism includes a fixed ring fixed to the top surface of the processing table by a fixed rod, a connecting rod hinged to the bottom surface of the fixed plate, a movable ring movably mounted on the outer periphery of the support column and a sliding rod fixed on the outer wall of the movable ring, the fixed ring is coaxially arranged with the rotating shaft, the inner ring of the fixed ring is provided with a guide groove, and one end of the sliding rod extends into the guide groove and is slidably connected with the guide groove.

[0022] Through the above technical solution, the fixed disk can be automatically driven to swing and tilt while rotating, so that the debris in the steel pipe can be easily poured out.

[0023] As a further improvement of the above solution, the guide groove includes a first horizontal section at the bottom, a second horizontal section at the top, and an inclined section for connecting two ends of the first horizontal section and two ends of the second horizontal section.

[0024] Through the above technical solution, the slide bar can automatically move up and down when moving in the guide groove.

[0025] As a further improvement of the above scheme, a gap is provided between the bottom of the fixing ring and the top surface of the processing table, the fixing point of the fixing rod and the top surface of the processing table is located outside the material receiving trough, a scraper is provided in the material receiving trough, a connecting plate is fixed to the outer periphery of the bottom plate, and the other end of the connecting plate is fixedly connected to the scraper.

[0026] Through the above technical solution, the scraper can be driven to rotate while the bottom plate rotates, so as to scrape the debris in the receiving trough into the discharge hole.

[0027] As a further improvement of the above scheme, a material-blocking mechanism is installed on the top surface of the processing table, and the material-blocking mechanism includes a movable column arranged above the processing table, a second fixed plate and a limiting sleeve movablely sleeved on the outer periphery of the movable column, the bottom of the second fixed plate is fixedly connected to the top surface of the processing table, one end of the limiting sleeve is fixedly connected to the outer wall of the second fixed plate, and a locking bolt for locking the movable column is screwed on the outer periphery of the limiting sleeve, and an abutment plate is fixed to the end of the movable column close to the material fixing mechanism.

[0028] Through the above technical solution, it is convenient to limit the length of the steel pipe exposed outside the fixing sleeve.

[0029] As a further improvement of the above solution, a grinding plate is fixed to one side of the mounting plate close to the fixed disk.

[0030] Through the above technical solution, the end of the steel pipe can be polished using the polishing plate.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. Through the cooperation between the processing table, the solid material mechanism, the steering mechanism and the swing mechanism, not only can the steel pipe be clamped conveniently, but also two grinding rods can be placed on the outside and inside of the steel pipe respectively, and then the steel pipe can be driven to rotate, so that the inner and outer diameters of the steel pipe can be ground at the same time, and the setting of the steering mechanism can also facilitate the direction of the steel pipe.

[0033] 2. By setting the swing mechanism, the steel pipe can be tilted in the process of turning its direction, so that the debris inside the steel pipe can be dumped out.

[0034] 3. By setting the material-blocking mechanism, one end of the steel pipe can be blocked when fixing the steel pipe, so that the length of the steel pipe exposed to the outside of the two ends of the fixing sleeve can be easily and quickly determined, so that the moving distance of the grinding rod can be further regulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the steel pipe of the present invention when it is laid flat;

[0036] Figure 2 It is a schematic diagram of the structure of the steel pipe of the present invention when it is tilted;

[0037] Figure 3 It is a schematic diagram of the structure of the steel pipe of the present invention when it is not loaded;

[0038] Figure 4 It is a structural schematic diagram of the bottom surface of the processing table of the present invention;

[0039] Figure 5 It is a structural schematic diagram of the grinding mechanism of the present invention;

[0040] Figure 6 It is a structural schematic diagram of the material fixing mechanism and the swinging mechanism of the present invention;

[0041] Figure 7 It is a cross-sectional view of the fixing ring of the present invention.

[0042] Description of main symbols:

[0043] 1. Processing table; 2. Material receiving trough; 3. Material discharge hole; 4. Fixed ring; 5. Fixed sleeve; 6. Driven gear; 7. Driving gear; 8. Fixed plate; 9. Three-jaw chuck; 10. Connecting plate; 11. Scraper; 12. Abutment plate; 13. Limiting sleeve; 14. Movable column; 15. Locking bolt; 16. Mounting plate; 17. Grinding rod; 18. First telescopic member; 19. First fixed plate; 20. Side plate; 21. Second fixed plate; 22. Grinding plate; 23. Bidirectional screw; 24. Mounting block; 25. Limiting frame; 26. Second telescopic member; 27. Rack; 28. Connecting gear; 29. ​​Positioning sleeve; 30. Positioning bolt; 31. Slide groove; 32. Mounting cylinder; 33. Connecting block; 34. Guide groove; 341. First horizontal section; 342. Inclined section; 343. Second horizontal section; 35. Connecting rod; 36. Slide rod; 37. Support column; 38. Bottom plate; 39. Movable ring; 40. Steel pipe. DETAILED DESCRIPTION

[0044] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0045] Embodiment 1:

[0046] Please combine Figure 1 - Figure 7 , a grinding and finishing system for inner and outer diameters of steel pipe welding in this embodiment includes:

[0047] The processing table 1 has an annular receiving groove 2 on its top surface and a discharge hole 3 at its bottom. The debris generated by grinding falls into the receiving groove 2 and can be discharged centrally through the discharge hole 3.

[0048] The material solidifying mechanism comprises a fixed sleeve 5, a fixed disk 8 rotatably sleeved on the outer periphery of the fixed sleeve 5, a three-jaw chuck 9 installed at one end of the fixed sleeve 5, a base plate 38 rotatably connected to the top surface of the processing table 1 through a rotating shaft, and a support column 37 fixed to the top surface of the base plate 38. The rotating shaft is coaxially arranged with the material receiving trough 2. The support column 37 is hinged to the bottom surface of the fixed disk 8. A driving member for driving the fixed sleeve 5 to rotate is installed on the fixed disk 8. The fixed disk 8 is rotatably sleeved on the outer periphery of the fixed sleeve 5. The driving member comprises a driven gear 6 sleeved on the outer periphery of the fixed sleeve 5 and a driving motor installed on the side wall of the fixed disk 8. The outer periphery of the output shaft of the driving motor is sleeved with a driving gear 7 meshing with the driven gear 6. When fixing the steel pipe 40, the steel pipe 40 is inserted into the fixed sleeve 5 and clamped with the three-jaw chuck 9. When grinding, the driving motor is started again to drive the fixed sleeve 5 to rotate, thereby rotating the steel pipe 40.

[0049] The grinding mechanism includes a side plate 20 fixed to the side of the processing table 1, a first fixed plate 19 fixed to the top surface of the side plate 20, and a grinding assembly installed on the first fixed plate 19 through a first telescopic member 18. The grinding assembly includes a mounting plate 16 fixed to the output end of the first telescopic member 18, two grinding rods 17 movably mounted on the mounting plate 16, and an adjustment assembly mounted on the mounting plate 16 for adjusting the positions of the two grinding rods 17. The two grinding rods 17 grind the outer diameter and inner diameter of the steel pipe 40 respectively.

[0050] The first fixing plate 19 is provided with a slide groove 31 along the radial direction of the fixing sleeve 5 on one side facing the fixing sleeve 5, and a through hole connected to the slide groove 31 is provided on the top surface of the first fixing plate 19. The adjustment component includes a bidirectional screw 23 movably arranged in the slide groove 31 and two connecting blocks 33 respectively threadedly sleeved on two opposite threaded areas on the outer periphery of the bidirectional screw 23. The bottom of the bidirectional screw 23 extends to the top of the first fixing plate 19 through the through hole, and one end of the two connecting blocks 33 extends to the outside of the slide groove 31 close to the fixing sleeve 5 and is fixed with a mounting tube 32. One end of the grinding rod 17 is inserted into the mounting tube 32, and the first fixing plate 19 is away from A mounting block 24 is provided on one side of the fixed sleeve 5, and a limit frame 25 is provided on the outer movable sleeve of the mounting block 24. The limit frame 25 is fixed on the outer wall of the first fixed plate 19, and a positioning bolt 30 is installed on the limit frame 25. One end of the positioning bolt 30 abuts against the outer periphery of the mounting block 24, and the other ends of the two connecting blocks 33 are fixedly connected to the mounting block 24. The position of the grinding rod 17 and the distance between the two grinding rods 17 can be adjusted according to the different inner and outer diameters of the steel pipe. When adjusting the distance between the two grinding rods 17, the bidirectional screw 23 can be rotated, and when adjusting the position of the two grinding rods 17, the mounting block 24 can be moved.

[0051] A positioning sleeve 29 is provided on the outer peripheral movable sleeve of the bidirectional screw 23, the bottom of the positioning sleeve 29 is fixedly connected to the top surface of the first fixed plate 19, and a fixing bolt is screwed on the outer periphery of the positioning sleeve 29, one end of the fixing bolt abuts against the outer periphery of the bidirectional screw 23, and the static friction between the fixing bolt and the bidirectional screw 23 can be used to lock the bidirectional screw 23 so that it cannot rotate or move.

[0052] A grinding plate 22 is fixed to one side of the mounting plate 16 close to the fixed plate 8. When grinding the steel pipe 9, one end of the steel pipe 40 abuts against the grinding plate 22, so that the end of the steel pipe 40 can be ground when the steel pipe 40 rotates.

[0053] The steering mechanism is installed on the bottom surface of the processing table 1 and is used to drive the bottom plate 38 to rotate. The bottom of the rotating shaft extends to the bottom of the processing table 1 and is fixed with a connecting gear 28. The steering mechanism includes a second telescopic member 26 installed on the bottom surface of the processing table 1 and a rack 27 fixed on the output end of the second telescopic member 26. The rack 27 is meshed with the connecting gear 28. When the second telescopic member 26 is extended or retracted, the rack 27 is driven to move, and the rack 27 drives the connecting gear 28 to rotate, thereby rotating the entire solid material mechanism, and then the direction of the steel pipe can be adjusted, so that both ends of the steel pipe can be polished.

[0054] The swing mechanism is installed on the processing table 1 and is used to drive the fixed plate 8 to swing when the bottom plate 38 rotates. The swing mechanism includes a fixed ring 4 fixed to the top surface of the processing table 1 through a fixed rod, a connecting rod 35 hinged to the bottom surface of the fixed plate 8, a movable ring 39 movably sleeved on the outer periphery of the support column 37, and a sliding rod 36 fixed to the outer wall of the movable ring 39. The fixed ring 4 is coaxially arranged with the rotating shaft, and the inner ring of the fixed ring 4 is provided with a guide groove 34. One end of the sliding rod 36 extends into the guide groove 34 and slides therewith. The guide groove 34 includes a first horizontal section 341 at the bottom, a second horizontal section 343 at the top, and an inclined section 342 for connecting the two ends of the first horizontal section 341 and the two ends of the second horizontal section 343. When the bottom plate 38 drives the fixed disk 8 to rotate, the fixed ring 4 does not rotate, and the connecting rod 35 and the movable ring 39 rotate synchronously with the fixed disk 8, so that the slide bar 36 slides along the guide groove 34. In the process of the slide bar 36 entering the second horizontal section 343 from the first horizontal section 341 through the inclined section 342, the slide bar 36 will be gradually raised, and the movable ring 39 will also move up, thereby forcing the fixed disk 8 to tilt to one side, thereby tilting the steel pipe 40, so that the debris in the steel pipe 40 is poured into the receiving trough 2. After the slide bar 36 returns to the first horizontal section 341 from the second horizontal section 343 through another inclined section 342, the fixed disk 8 is realigned and the steel pipe 40 also returns to the horizontal position.

[0055] In this embodiment, the first telescopic member 18 and the second telescopic member 26 are both electric telescopic rods.

[0056] The implementation principle of this embodiment is as follows: when grinding, first insert the steel pipe 40 into the fixing sleeve 5 and clamp it with the three-jaw chuck 9, then start the first telescopic member 18 to extend, so that the grinding rod 17 is close to the steel pipe 40, until one of the two grinding rods 17 is located outside the steel pipe 40 and the other is located inside the steel pipe 40, and one end of the steel pipe 40 is in contact with the grinding plate 22, then stop the first telescopic member 18, and then adjust the position and spacing of the two grinding rods 17;

[0057] When adjusting the position of the grinding rod 17, first loosen the positioning bolt 30, and then loosen the fixing bolt. Then, the mounting block 24 can be moved to drive the two grinding rods 17 to move at the same time. After the adjustment is completed, the positioning bolt 30 can be tightened. When adjusting the distance between the two grinding rods 17, the fixing bolt can be loosened, and then the bidirectional screw 23 can be rotated. When rotating clockwise, the two connecting blocks 33 are close to each other, so that the distance between the two grinding rods 17 becomes smaller. When the connecting block 33 is rotated counterclockwise, the distance between the two grinding rods 17 becomes larger, ensuring that the two grinding rods 17 are respectively in contact with the inner diameter and outer diameter of the steel pipe 40. Then, the driving motor can be started to drive the steel pipe 40 to rotate, so that the inner and outer diameters and the ends of the steel pipe 40 are polished.

[0058] After grinding one end, the direction of the steel pipe 40 can be turned to grind the other end of the steel pipe 40. At this time, the second telescopic member 26 is started to extend so as to drive the rack 27 to move, and the rack 27 drives the connecting gear 28 to rotate, so that the entire solid material mechanism rotates. When the connecting gear 28 rotates 180 degrees, the two ends of the steel pipe 40 can be swapped. During the rotation of the steel pipe 40, the slide bar 36 slides along the guide groove 34. When the slide bar 36 passes from the first horizontal section 341 through the inclined section 34 In the process of entering the second horizontal section 343, the slide bar 36 will be gradually raised, thereby forcing the fixed plate 8 to tilt to one side, thereby tilting the steel pipe 40, so that the debris in the steel pipe 40 is poured into the receiving trough 2. After that, the slide bar 36 returns to the first horizontal section 341 from the second horizontal section 343 through another inclined section 342, the fixed plate 8 is re-aligned, the steel pipe 40 also returns to the horizontal position, and the steel pipe also completes a 180-degree rotation, and then the other end of the steel pipe 40 can be polished.

[0059] Embodiment 2:

[0060] Combination Figure 1-3 Based on Example 1, this embodiment is further improved in that: a gap is provided between the bottom of the fixing ring 4 and the top surface of the processing table 1, the fixing point of the fixing rod and the top surface of the processing table 1 is located outside the material receiving trough 2, a scraper 11 is provided in the material receiving trough 2, the bottom surface of the scraper 11 abuts against the bottom surface of the material receiving trough 2, a connecting plate 10 is fixed to the outer periphery of the bottom plate 38, and the other end of the connecting plate 10 is fixedly connected to the scraper 11, and the scraper 11 is used to scrape the debris falling into the material receiving trough 2 into the discharge hole 3 for discharge.

[0061] The implementation principle of this embodiment is: when the bottom plate 38 rotates, the scraper plate 11 will be driven to rotate synchronously through the connecting plate 10, so that the debris falling into the receiving trough 2 is scraped into the discharge hole 3 for discharge.

[0062] Embodiment 3:

[0063] Combination Figure 1-4Based on Example 1, the present embodiment is further improved in that: a material-resisting mechanism is installed on the top surface of the processing table 1, and the material-resisting mechanism includes a movable column 14 arranged above the processing table 1, a second fixed plate 21 and a limiting sleeve 13 that are movable sleeved on the outer periphery of the movable column 14, the bottom of the second fixed plate 21 is fixedly connected to the top surface of the processing table 1, one end of the limiting sleeve 13 is fixedly connected to the outer wall of the second fixed plate 21, and a locking bolt 15 is screwed on the outer periphery of the limiting sleeve 13, one end of the locking bolt 15 is in contact with the outer periphery of the movable column 14, an abutting plate 12 is fixed to one end of the movable column 14 close to the material-fixing mechanism, and a scale value is marked on the outer periphery of the movable column 14, the position of the abutting plate 12 is adjusted, and one end of the steel pipe 40 is abutted by the abutting plate 12, so as to control the length of the steel pipe 40 exposed outside the fixed sleeve 5.

[0064] The implementation principle of this embodiment is: after the locking bolt 15 is loosened, the movable column 14 can be moved, and the end of the limit sleeve 13 can be adjusted according to the scale value on the surface of the movable column 14, so that the position of the abutment plate 12 can be accurately adjusted. When fixing the steel pipe 40, one end of the steel pipe 40 passes through the fixed sleeve 5 and abuts against the abutment plate 12, thereby ensuring that the length of the steel pipe 40 exposed outside the fixed sleeve 5 meets the processing requirements.

[0065] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A grinding and finishing system for inner and outer diameters of steel pipe welding, characterized in that: include: A processing table, wherein the top surface of the processing table is provided with an annular material receiving groove, and the bottom of the material receiving groove is provided with a discharge hole; The material fixing mechanism comprises a fixed sleeve, a fixed disk rotatably sleeved on the outer periphery of the fixed sleeve, a three-jaw chuck mounted on one end of the fixed sleeve, a bottom plate rotatably connected to the top surface of the processing table through a rotating shaft, and a support column fixed to the top surface of the bottom plate, wherein the support column is hinged to the bottom surface of the fixed disk, and a driving member for driving the fixed sleeve to rotate is installed on the fixed disk; A grinding mechanism, comprising a side plate fixed to the side of the processing table, a first fixed plate fixed to the top surface of the side plate, and a grinding assembly mounted on the first fixed plate through a first telescopic member, wherein the grinding assembly comprises a mounting plate fixed to the output end of the first telescopic member, two grinding rods movably mounted on the mounting plate, and an adjustment assembly mounted on the mounting plate for adjusting the positions of the two grinding rods; A steering mechanism, which is mounted on the bottom surface of the processing table and is used to drive the bottom plate to rotate; The rocking mechanism is installed on the processing table and is used to drive the fixed plate to rock when the base plate rotates.

2. The inner and outer diameter grinding and finishing system for steel pipe welding according to claim 1, characterized in that: The fixed disk is rotatably sleeved on the outer periphery of the fixed sleeve, and the driving member includes a driven gear sleeved on the outer periphery of the fixed sleeve and a driving motor installed on the side wall of the fixed disk. The outer periphery of the output shaft of the driving motor is sleeved with a driving gear meshing with the driven gear.

3. The inner and outer diameter grinding and finishing system for steel pipe welding according to claim 1, characterized in that: The bottom of the rotating shaft extends to the bottom of the processing table and is fixed with a connecting gear. The steering mechanism includes a second telescopic member installed on the bottom surface of the processing table and a rack fixed on the output end of the second telescopic member, and the rack is meshed with the connecting gear.

4. The inner and outer diameter grinding and finishing system for steel pipe welding according to claim 1, characterized in that: The top of the two wheels are connected with the driving wheel of the vehicle, and the driving wheel can be turned on the driving wheel to drive the transmission gear of the vehicle to move upwards, thereby greatly improving the driving speed of the vehicle.

5. The inner and outer diameter grinding and finishing system for steel pipe welding according to claim 1, characterized in that: The outer peripheral movable sleeve of the bidirectional screw is provided with a positioning sleeve, the bottom of the positioning sleeve is fixedly connected to the top surface of the first fixed plate, and the outer periphery of the positioning sleeve is threaded with a fixing bolt for locking the bidirectional screw.

6. The inner and outer diameter grinding and finishing system for steel pipe welding according to claim 1, characterized in that: The swing mechanism includes a fixed ring fixed to the top surface of the processing table by a fixed rod, a connecting rod hinged to the bottom surface of the fixed plate, a movable ring movably sleeved on the outer periphery of the support column and a sliding rod fixed on the outer wall of the movable ring. The fixed ring is coaxially arranged with the rotating shaft, and a guide groove is formed on the inner ring of the fixed ring. One end of the sliding rod extends into the guide groove and is slidably connected with the guide groove.

7. The inner and outer diameter grinding and finishing system for steel pipe welding according to claim 6, characterized in that: The guide groove includes a first horizontal section at the bottom, a second horizontal section at the top, and an inclined section for connecting two ends of the first horizontal section and two ends of the second horizontal section.

8. The inner and outer diameter grinding and finishing system for steel pipe welding according to claim 6, characterized in that: A gap is provided between the bottom of the fixing ring and the top surface of the processing table. The fixing points of the fixing rod and the top surface of the processing table are located outside the material receiving trough. A scraper is provided in the material receiving trough. A connecting plate is fixed to the outer periphery of the bottom plate. The other end of the connecting plate is fixedly connected to the scraper.

9. The inner and outer diameter grinding and finishing system for steel pipe welding according to claim 1, characterized in that: A material-blocking mechanism is installed on the top surface of the processing table, and the material-blocking mechanism includes a movable column arranged above the processing table, a second fixed plate and a limiting sleeve movablely sleeved on the outer periphery of the movable column, the bottom of the second fixed plate is fixedly connected to the top surface of the processing table, one end of the limiting sleeve is fixedly connected to the outer wall of the second fixed plate, and a locking bolt for locking the movable column is screwed on the outer periphery of the limiting sleeve, and an abutment plate is fixed to one end of the movable column close to the material-blocking mechanism.

10. The inner and outer diameter grinding and finishing system for steel pipe welding according to claim 1, characterized in that: A grinding plate is fixed on one side of the mounting plate close to the fixing disk.

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