A new type of large slurry pump shell welding equipment and method

Abstract

The application discloses a novel large slurry pump shell welding equipment and method, relates to the technical field of slurry pump production, and comprises a workbench, a second conveying belt and a first conveying belt, the workbench is provided with a first servo motor, the output end of the first servo motor is fixedly connected with a mounting block, the two sides of the mounting block are provided with supporting tables, the top of each supporting table is provided with a vertical plate, and the top of each supporting table and located on one side of the vertical plate is provided with a limiting column, the novel large slurry pump shell welding equipment and method are provided with a moving column, a moving box and a sliding block, the slurry pump shell can be conveniently limited, the slurry pump shell can be conveniently taken down, the equipment can automatically move the pump shell body, the pump shell body can be automatically moved to a machining position, the welded pump shell body can be taken down and moved to a next station, and the equipment has high slurry pump shell welding efficiency.

Description

Technical Field

[0001] This invention relates to the field of mud pump manufacturing technology, specifically to a novel welding equipment and method for large mud pump casings. Background Technology

[0002] The performance of a mud pump is significantly affected by the dimensional and shape accuracy of its casing, which also directly impacts the service life of vulnerable parts. As the pump's supporting component, the welding quality of the casing directly affects its dimensional and positional tolerances, and this welding quality depends on selecting a suitable welding method. However, existing welding equipment for large mud pump casings presents challenges in loading and unloading the casing, resulting in low welding efficiency. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a novel welding equipment and method for large-scale mud pump casings, solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A novel large-scale mud pump casing welding equipment, comprising a workbench, a second conveyor belt, and a first conveyor belt. The workbench is equipped with a first servo motor, the output end of which is fixedly connected to a mounting block. Support platforms are provided on both sides of the mounting block. Each support platform has a vertical plate on its top. Limiting posts are provided on the top of each support platform and on one side of each vertical plate. A spindle is rotatably connected to one side of each limiting post. A first connecting plate is fixedly sleeved on the outer side of the spindle. First air pumps are provided at one end of the first connecting plate, both above and below the spindle. A first clamping plate is slidably sleeved on the outer side of the spindle and on one side of the first air pump. The telescopic rods of the first air pumps are fixedly connected to one side of the first clamping plate. A pump casing body is sleeved on the outer side of one of the spindles and on one side of the first clamping plate. The support platforms... The top of each support platform is provided with a movable groove at the end away from the limiting post. A movable box is slidably connected inside each movable groove. A movable column is slidably connected to the top of each movable box. A support plate is provided at the top of the support platform, between the limiting post and the movable column. A movable groove is provided at the top of the support plate, above the movable column. The top of each movable column passes through the movable groove and extends above the support plate. A rotating rod is rotatably connected to one side of each movable column. A fixed block is provided at one end of the rotating rod. A fixed plate is fixedly sleeved on the outside of the rotating rod. A third cylinder is provided at one end of the fixed plate, on both sides of the rotating rod. A second clamping plate is movably sleeved at the outside of the spindle, near the movable column. The telescopic rods of the third cylinders are fixedly connected to one side of the second clamping plate. Four fourth cylinders are provided on the outside of the spindle, on one side of the second clamping plate. The piston rods of the fourth cylinders are provided with support plates.

[0005] Optionally, each of the fixing blocks has a fixing groove at one end near the mandrel, and a limiting block is placed inside each fixing groove. One end of each limiting block is fixedly connected to one end of the mandrel. A connecting cavity is formed inside the fixing block, both above and below the fixing groove. A second cylinder is provided on one side of each connecting cavity. The piston rod of each second cylinder is provided with a locking pin. A locking groove is formed on the outside of the limiting block, on the side of the locking pin. One end of each locking pin extends into the locking groove.

[0006] Optionally, a second lead screw is rotatably connected to one side of the inner cavity of the movable box, and a third servo motor is provided on the other side of the inner cavity of the movable box. The output end of the third servo motor is fixedly connected to one end of the second lead screw. A moving block is threadedly connected to the outer side of the second lead screw. The top end of the moving block extends to the top of the support platform and is fixedly connected to the bottom of the moving column.

[0007] Optionally, a connecting groove is provided on the top of the support platform and below the movable groove. A second servo motor is provided on one side of the inner cavity of the connecting groove, and a first lead screw is rotatably connected to the side of the inner cavity of the connecting groove away from the second servo motor. The output end of the second servo motor is fixedly connected to one end of the first lead screw. A slider is threadedly connected to the outer side of the first lead screw, and the top end of the slider is fixedly connected to the bottom of the movable box.

[0008] Optionally, a protective box is provided on one side of the upright plate. One end of the mandrel passes through the limiting post and extends into the protective box. One end of the mandrel is fixedly connected to one side of the protective box. A fourth servo motor is provided on one side of the inner cavity of the protective box and below the mandrel. The output end of the fourth servo motor is fixedly connected to a rotating shaft. One end of the rotating shaft is rotatably connected to one side of the upright plate. A second gear is fixedly sleeved on the outside of the rotating shaft. A first gear is fixedly sleeved on the outside of the mandrel and inside the protective box. The second gear meshes with the first gear.

[0009] Optionally, a first conveyor platform is provided on the top of the workbench and on one side of a support platform. A first roller is rotatably connected to the inner cavity of the first conveyor platform, and a second roller is rotatably connected to the inner cavity of the first conveyor platform and on one side of the first roller. The first roller and the second roller are connected by a first conveyor belt. Several push blocks are provided on the working surface of the first conveyor belt. A fifth servo motor is provided on one side of the first conveyor platform, and the output end of the fifth servo motor is fixedly connected to one end of the first roller.

[0010] Optionally, a second conveyor is provided on the top of the workbench and on one side of another support platform. A first conveyor roller is rotatably connected to the inner cavity of the second conveyor, and a second conveyor roller is rotatably connected to the end of the inner cavity of the second conveyor away from the first conveyor roller. The first conveyor roller and the second conveyor roller are connected by a second conveyor belt. A sixth servo motor is provided on one side of the second conveyor, and the output end of the sixth servo motor is fixedly connected to one end of the second conveyor roller.

[0011] Optionally, each of the push blocks is provided with an electric telescopic rod on one side, and each telescopic rod of the electric telescopic rod is provided with a second connecting plate. Each of the support platforms is provided with two hydraulic cylinders at the bottom, and the piston rods of the hydraulic cylinders are fixedly connected to the bottom of the support plate.

[0012] A novel welding method for the casing of a large mud pump, characterized by the following steps:

[0013] S1: First, the output end of the fifth servo motor drives the first roller to rotate, so that the first roller drives the second roller to rotate through the first conveyor belt, so that the first conveyor belt drives the pump housing body to move. At the same time, the piston rod of the hydraulic cylinder pushes the support plate to move up, so that the top of the support plate is at the same horizontal line as the top of the first conveyor table, so that the push block pushes one end of the pump housing body to move onto the support plate, so that the pump housing body is sleeved on the outside of the spindle. Then, the telescopic rod of the electric telescopic rod pushes the second connecting plate to move, so that the second connecting plate pushes the pump housing body to be completely sleeved on the outside of the spindle. Then, the telescopic rod of the electric telescopic rod drives the second connecting plate to reset.

[0014] S2: Then the output of the second servo motor drives the first lead screw to rotate, which causes the first lead screw to move the slider, which in turn causes the slider to move the moving box inside the movable slot, thereby moving the moving column to one end of the mandrel. Then the output of the third servo motor drives the second lead screw to rotate, which causes the moving block to move the moving column, so that the fixed block is fitted on the outside of the fixed block, and the limiting block is located inside the fixed slot. Then the piston rod of the second cylinder pushes one end of the locking column to insert into the locking slot, fixing the mandrel.

[0015] S3: Then the piston rod of the third cylinder pushes the second clamping plate to move, so that the second clamping plate moves along the outside of the spindle. At the same time, the piston rod of the first pump pushes the first clamping plate to slide along the outside of the spindle, so that the second clamping plate and the first clamping plate clamp the pump housing body. Then the piston rod of the fourth cylinder pushes the support plate to move, so that the support plate contacts the inner cavity at one end of the pump housing body, thereby limiting one end of the pump housing body.

[0016] S4: Then, during welding, the output of the fourth servo motor drives the rotating shaft to rotate, which in turn drives the second gear to rotate. This causes the second gear to drive the first gear to rotate, which in turn drives the spindle to rotate. The spindle then drives the pump housing body to rotate through the second clamping plate, the first clamping plate, and the support plate, thereby adjusting the angle of the pump housing body to facilitate welding.

[0017] S5: After welding is completed, the output of the first servo motor drives the mounting block to rotate, causing one support platform to rotate to one side of the second conveyor platform, and then the other support platform to rotate to one side of the first conveyor platform. At this time, the first roller continues to run, continuing the feeding of the pump housing body. At the same time, the piston rod of the second cylinder on the support platform located on one side of the second conveyor platform drives the locking pin to move into the connecting cavity, causing one end of the locking pin to move out of the locking groove. Then, the output of the third servo motor drives the second lead screw to rotate in the opposite direction, causing the moving block to move the moving column away from the spindle, causing the limiting block to move out of the fixing groove. Then, the output of the second servo motor drives the first lead screw to rotate in the opposite direction, causing the slider to move the moving box, causing the moving column to move to one side of the spindle. Then, the telescopic rod of the first air pump pushes the first clamping plate to move, causing the pump housing body to move along the support plate to the second conveyor belt. Then, the output of the sixth servo motor drives the second conveyor roller to rotate, causing the second conveyor roller to drive the first conveyor roller to rotate through the second conveyor belt, thereby moving the welded pump housing body to the next station.

[0018] This invention provides a novel welding equipment and method for large mud pump casings, which has the following beneficial effects:

[0019] 1. This novel large-scale mud pump casing welding equipment and method, by setting up a movable column, a movable box and a slider, facilitates the limiting of the mud pump casing and the removal of the mud pump casing. This allows the equipment to automatically move the pump casing body to the processing position, and also remove the welded pump casing body and move it to the next work station, making the equipment highly efficient for mud pump casing welding.

[0020] 2. This novel large-scale mud pump casing welding equipment and method, by setting up two support platforms, allows the support platform to rotate to one side of the second conveyor platform after one pump casing body is welded, and then the other support platform to one side of the first conveyor platform, thereby facilitating the loading and unloading of the pump casing body and improving the efficiency of mud pump casing welding. At the same time, by setting up a second clamping plate, a first clamping plate and a fourth cylinder, the pump casing body is limited, thereby facilitating the adjustment of the angle of the pump casing body during welding and making the welding of the pump casing body more convenient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 2 This is a partial structural diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the top structure of the support platform of the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the support platform of the present invention viewed from below;

[0025] Figure 5 This is a schematic diagram of the main structure of the first conveyor platform of the present invention;

[0026] Figure 6 This is a schematic diagram of the main structure of the second conveyor table of the present invention;

[0027] Figure 7 For the present invention Figure 1 Enlarged view of point A;

[0028] Figure 8 For the present invention Figure 2 Enlarged view of point B;

[0029] Figure 9 For the present invention Figure 2 Enlarged view of point C;

[0030] Figure 10 For the present invention Figure 2 Enlarged view of point D.

[0031] In the diagram: 1. Workbench; 2. First servo motor; 3. Mounting block; 4. Support platform; 5. Vertical plate; 6. Limiting post; 7. Spindle; 8. First air pump; 9. First connecting plate; 10. First clamping plate; 11. Electric telescopic rod; 12. Pump housing body; 13. Connecting groove; 14. First lead screw; 15. Slider; 16. Second servo motor; 17. Moving box; 18. Second lead screw; 19. Third servo motor; 20. Moving block; 21. Moving groove; 22. Moving post; 23. Rotating rod; 24. Fixing plate; 25. Fixing block; 26. Fixing groove; 27. Limiting block; 28. Connecting cavity; 29. ​​Second 30. Cylinder; 31. Locking pin; 32. Locking slot; 33. Second clamping plate; 34. Second connecting plate; 35. Third cylinder; 36. Fourth cylinder; 37. Support plate; 38. Protective box; 39. First gear; 40. Second gear; 41. Rotating shaft; 42. Fourth servo motor; 43. Hydraulic cylinder; 44. Support plate; 45. First conveyor table; 46. First rotating roller; 47. Second rotating roller; 48. First conveyor belt; 49. Push block; 50. Fifth servo motor; 51. Second conveyor table; 52. Sixth servo motor; 53. First conveyor roller; 54. Second conveyor belt; 55. Movable groove. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] Please see Figures 1 to 10 This invention provides a technical solution: a novel large-scale mud pump casing welding equipment, comprising a workbench 1, a second conveyor belt 54, and a first conveyor belt 47. The workbench 1 is equipped with a first servo motor 2, the output end of which is fixedly connected to a mounting block 3. Support platforms 4 are provided on both sides of the mounting block 3. Each support platform 4 has a vertical plate 5 on its top. Limiting posts 6 are provided on the top of each support platform 4 and on one side of each vertical plate 5. A spindle 7 is rotatably connected to one side of each limiting post 6. A first connecting plate 9 is fixedly sleeved on the outer side of the spindle 7. A first air pump 8 is provided at one end of the first connecting plate 9, above and below the spindle 7. A first clamping plate 10 is slidably sleeved on the outer side of the spindle 7 and on one side of the first air pump 8. The telescopic rods of the first air pump 8 are fixedly connected to one side of the first clamping plate 10. A pump casing body 12 is sleeved on the outer side of one spindle 7 and on one side of the first clamping plate 10. Movable grooves are provided at the top of each support platform 4 away from the limiting post 6. 55. Each movable slot 55 has a slidingly connected movable box 17. Each movable box 17 has a slidingly connected movable column 22. A support plate 43 is located on the top of the support platform 4, between the limiting column 6 and the movable column 22. Each support plate 43 has a movable slot 21 on its top, above the movable column 22. The top of each movable column 22 passes through the movable slot 21 and extends above the support plate 43. Each movable column 22 has a rotating rod 23 rotatably connected to one side. One end of the rotating rod 23 is equipped with a... A fixed plate 24 is fixedly sleeved on the outside of the fixed block 25 and the rotating rod 23. A third cylinder 34 is provided at one end of the fixed plate 24 and on both sides of the rotating rod 23. A second clamping plate 32 is movably sleeved on the outside of the spindle 7 near the moving column 22. The telescopic rods of the third cylinders 34 are fixedly connected to one side of the second clamping plate 32. Four fourth cylinders 35 are provided on the outside of the spindle 7 and on one side of the second clamping plate 32. The piston rods of the fourth cylinders 35 are provided with support plates 36.

[0034] Each fixing block 25 has a fixing groove 26 at one end near the spindle 7. Each fixing groove 26 has a limiting block 27 placed inside it. One end of each limiting block 27 is fixedly connected to one end of the spindle 7. Each fixing block 25 has a connecting cavity 28 inside it, above and below the fixing groove 26. Each connecting cavity 28 has a second cylinder 29 on one side. Each piston rod of the second cylinder 29 has a locking pin 30. Each limiting block 27 has a locking groove 31 on the outside of it, on one side of the locking pin 30. One end of each locking pin 30 extends into the locking groove 31 to facilitate the connection between the spindle 7 and the fixing block 25.

[0035] The inner cavity of the movable box 17 is rotatably connected to one side of the second lead screw 18, and the inner cavity of the movable box 17 is provided with a third servo motor 19. The output end of the third servo motor 19 is fixedly connected to one end of the second lead screw 18. The outer side of the second lead screw 18 is connected to a moving block 20 by a thread. The top of the moving block 20 extends to the top of the support platform 4 and is fixedly connected to the bottom of the moving column 22, which facilitates the loading and unloading of the pump housing body 12.

[0036] The support platform 4 has a connecting groove 13 on its top and below the movable groove 55. A second servo motor 16 is provided on one side of the inner cavity of the connecting groove 13. A first lead screw 14 is rotatably connected to the side of the inner cavity of the connecting groove 13 away from the second servo motor 16. The output end of the second servo motor 16 is fixedly connected to one end of the first lead screw 14. A slider 15 is threadedly connected to the outer side of the first lead screw 14. The top of the slider 15 is fixedly connected to the bottom of the movable box 17 to facilitate the movement of the movable column 22.

[0037] One side of the upright plate 5 is provided with a protective box 37. One end of the spindle 7 passes through the limiting post 6 and extends into the protective box 37. One end of the spindle 7 is fixedly connected to one side of the protective box 37. A fourth servo motor 41 is provided on one side of the inner cavity of the protective box 37 and below the spindle 7. The output end of the fourth servo motor 41 is fixedly connected to a rotating shaft 40. One end of the rotating shaft 40 is rotatably connected to one side of the upright plate 5. A second gear 39 is fixedly sleeved on the outside of the rotating shaft 40. A first gear 38 is fixedly sleeved on the outside of the spindle 7 and inside the protective box 37. The second gear 39 meshes with the first gear 38 to facilitate adjustment of the welding angle of the pump housing body 12.

[0038] The workbench 1 has a first conveyor table 44 on its top and on one side of a support platform 4. A first roller 45 is rotatably connected to the inner cavity of the first conveyor table 44. A second roller 46 is rotatably connected to the inner cavity of the first conveyor table 44 and on one side of the first roller 45. The first roller 45 and the second roller 46 are connected by a first conveyor belt 47. The working surface of the first conveyor belt 47 is provided with several push blocks 48. A fifth servo motor 49 is provided on one side of the first conveyor table 44. The output end of the fifth servo motor 49 is fixedly connected to one end of the first roller 45, which facilitates the movement of the unwelded pump housing body 12 to the processing position.

[0039] A second conveyor platform 50 is provided on the top of the workbench 1 and on one side of another support platform 4. A first conveyor roller 52 is rotatably connected to the inner cavity of the second conveyor platform 50. A second conveyor roller 53 is rotatably connected to the end of the inner cavity of the second conveyor platform 50 away from the first conveyor roller 52. The first conveyor roller 52 and the second conveyor roller 53 are connected by a second conveyor belt 54. A sixth servo motor 51 is provided on one side of the second conveyor platform 50. The output end of the sixth servo motor 51 is fixedly connected to one end of the second conveyor roller 53 to facilitate the movement of the welded pump housing body 12.

[0040] Among them, each side of the push block 48 is provided with an electric telescopic rod 11, and each telescopic rod of the electric telescopic rod 11 is provided with a second connecting plate 33. Each support platform 4 is provided with two hydraulic cylinders 42 at the bottom. The piston rods of the hydraulic cylinders 42 are fixedly connected to the bottom of the support plate 43, so as to facilitate the control of the fixation of the support plate 43.

[0041] A novel method for welding the casing of a large mud pump includes the following steps:

[0042] S1: First, the output end of the fifth servo motor 49 drives the first roller 45 to rotate, so that the first roller 45 drives the second roller 46 to rotate through the first conveyor belt 47, so that the first conveyor belt 47 drives the pump housing body 12 to move. At the same time, the piston rod of the hydraulic cylinder 42 pushes the support plate 43 to move upward, so that the top of the support plate 43 is at the same horizontal line as the top of the first conveyor table 44, so that the push block 48 pushes one end of the pump housing body 12 to move onto the support plate 43, so that the pump housing body 12 is sleeved on the outside of the spindle 7. Then, the telescopic rod of the electric telescopic rod 11 pushes the second connecting plate 33 to move, so that the second connecting plate 33 pushes the pump housing body 12 to be completely sleeved on the outside of the spindle 7. Then, the telescopic rod of the electric telescopic rod 11 drives the second connecting plate 33 to reset.

[0043] S2: Then the output end of the second servo motor 16 drives the first lead screw 14 to rotate, causing the first lead screw 14 to drive the slider 15 to move, causing the slider 15 to drive the moving box 17 to move inside the movable groove 55, thereby causing the moving column 22 to move to one end of the spindle 7. Then the output end of the third servo motor 19 drives the second lead screw 18 to rotate, causing the moving block 20 to drive the moving column 22 to move, causing the fixing block 25 to be sleeved on the outside of the fixing block 25, causing the limiting block 27 to be located inside the fixing groove 26. Then the piston rod of the second cylinder 29 pushes one end of the locking column 30 to insert into the locking groove 31, fixing the spindle 7.

[0044] S3: Then the piston rod of the third cylinder 34 pushes the second clamping plate 32 to move, so that the second clamping plate 32 moves along the outside of the spindle 7. At the same time, the piston rod of the first air pump 8 pushes the first clamping plate 10 to slide along the outside of the spindle 7, so that the second clamping plate 32 and the first clamping plate 10 clamp the pump housing body 12. Then the piston rod of the fourth cylinder 35 pushes the support plate 36 to move, so that the support plate 36 contacts the inner cavity of one end of the pump housing body 12, thereby limiting one end of the pump housing body 12.

[0045] S4: Then, during welding, the output end of the fourth servo motor 41 drives the rotating shaft 40 to rotate, which causes the second gear 39 to rotate, which in turn drives the first gear 38 to rotate, causing the spindle 7 to rotate. The spindle 7 then drives the pump housing body 12 to rotate through the second clamping plate 32, the first clamping plate 10, and the support plate 36, thereby adjusting the angle of the pump housing body 12 to facilitate welding.

[0046] S5: After welding is completed, the output of the first servo motor 2 drives the mounting block 3 to rotate, causing one support platform 4 to rotate to one side of the second conveyor platform 50, and then the other support platform 4 to rotate to one side of the first conveyor platform 44. At this time, the first roller 45 continues to run, continuing the feeding work of the pump housing body 12. At the same time, the piston rod of the second cylinder 29 on the support platform 4 located on one side of the second conveyor platform 50 drives the locking pin 30 to move into the connecting cavity 28, causing one end of the locking pin 30 to move out of the locking groove 31. Then, the output of the third servo motor 19 drives the second lead screw 18 to rotate in the opposite direction, causing the moving block 20 to drive the moving column 22 away from the center. The direction of the spindle 7 moves, causing the limiting block 27 to move out of the fixed groove 26. Then, the output end of the second servo motor 16 drives the first lead screw 14 to rotate in the opposite direction, causing the slider 15 to move the moving box 17, and the moving column 22 to move to one side of the spindle 7. Then, the telescopic rod of the first air pump 8 pushes the first clamping plate 10 to move, causing the pump housing body 12 to move along the support plate 43 to the second conveyor belt 54. Then, the output end of the sixth servo motor 51 drives the second conveyor roller 53 to rotate, causing the second conveyor roller 53 to drive the first conveyor roller 52 to rotate through the second conveyor belt 54, thereby moving the welded pump housing body 12 to the next station.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A new type of large slurry pump shell welding equipment, comprising a workbench (1), a second conveyor belt (54) and a first conveyor belt (47), characterized in that: The workbench (1) is provided with a first servo motor (2), the output end of the first servo motor (2) is fixedly connected with a mounting block (3), both sides of the mounting block (3) are provided with a support table (4), the top of the support table (4) is provided with a vertical plate (5), the top of the support table (4) and one side of the vertical plate (5) are provided with a limiting column (6), one side of the limiting column (6) is rotatably connected with a mandrel (7), the outer side of the mandrel (7) is fixedly sleeved with a first connecting plate (9), one end of the first connecting plate (9) and above and below the mandrel (7) are provided with a first air pump (8), the outer side of the mandrel (7) and one side of the first air pump (8) are slidably sleeved with a first clamping plate (10), the telescopic rods of the first air pump (8) are fixedly connected with one side of the first clamping plate (10), the outer side of one of the mandrel (7) and one side of the first clamping plate (10) are sleeved with a pump housing body (12), the top of the support table (4) is provided with a movable groove (55) away from the limiting column (6), the movable groove (55) is slidably connected with a moving box (17), the top of the moving box (17) is slidably connected with a moving column (22), the top of the support table (4) and between the limiting column (6) and the moving column (22) are provided with a support plate (43), the top of the support plate (43) and above the moving column (22) are provided with a moving groove (21), the top of the moving column (22) penetrates through the moving groove (21) and extends above the support plate (43), one side of the moving column (22) is rotatably connected with a rotating rod (23), one end of the rotating rod (23) is provided with a fixed block (25), the outer side of the rotating rod (23) is fixedly sleeved with a fixed plate (24), one end of the fixed plate (24) and both sides of the rotating rod (23) are provided with a third air cylinder (34), the outer side of the mandrel (7) and one end close to the moving column (22) are movably sleeved with a second clamping plate (32), the telescopic rods of the third air cylinder (34) are fixedly connected with one side of the second clamping plate (32), the outer side of the mandrel (7) and one side of the second clamping plate (32) are provided with four fourth air cylinders (35), the piston rods of the fourth air cylinder (35) are provided with a support plate (36).

2. A new type of large slurry pump shell welding equipment according to claim 1, characterized in that: The end of the fixed block (25) close to the mandrel (7) is provided with a fixed groove (26), the fixed groove (26) is placed with a limiting block (27), one end of the limiting block (27) is fixedly connected with one end of the mandrel (7), the inside of the fixed block (25) and above and below the fixed groove (26) are provided with a connecting cavity (28), one side of the connecting cavity (28) is provided with a second air cylinder (29), the piston rod of the second air cylinder (29) is provided with a clamping column (30), the outer side of the limiting block (27) and one side of the clamping column (30) are provided with a clamping groove (31), one end of the clamping column (30) extends into the clamping groove (31).

3. A new type of large slurry pump shell welding equipment according to claim 2, characterized in that: The inner cavity of the moving box (17) is rotatably connected with a second lead screw (18) on one side, and is provided with a third servo motor (19) on the other side, the output end of the third servo motor (19) is fixedly connected with one end of the second lead screw (18), the outer side of the second lead screw (18) is threadedly connected with a moving block (20), and the top end of the moving block (20) extends to the upper side of the supporting table (4) and is fixedly connected with the bottom of the moving column (22).

4. A new type of large slurry pump shell welding equipment according to claim 3, characterized in that: The top of the supporting table (4) and below the movable groove (55) are provided with a connecting groove (13), one side of the inner cavity of the connecting groove (13) is provided with a second servo motor (16), and the side of the inner cavity of the connecting groove (13) away from the second servo motor (16) is rotatably connected with a first lead screw (14), the output end of the second servo motor (16) is fixedly connected with one end of the first lead screw (14), and the outer side of the first lead screw (14) is threadedly connected with a sliding block (15), and the top end of the sliding block (15) is fixedly connected with the bottom of the moving box (17).

5. A new type of large slurry pump shell welding equipment according to claim 4, characterized in that: One side of the vertical plate (5) is provided with a protection box (37), one end of the mandrel (7) extends to the inside of the protection box (37) through the limiting column (6), and the one end of the mandrel (7) is fixedly connected with one side of the protection box (37). One side of the inner cavity of the protection box (37) and below the mandrel (7) is provided with a fourth servo motor (41), the output end of the fourth servo motor (41) is fixedly connected with a rotating shaft (40), one end of the rotating shaft (40) is rotatably connected with one side of the vertical plate (5), the outer side of the rotating shaft (40) is fixedly sleeved with a second gear (39), the outer side of the mandrel (7) and inside the protection box (37) are fixedly sleeved with a first gear (38), and the second gear (39) is meshedly connected with the first gear (38).

6. A new type of large slurry pump shell welding equipment according to claim 5, characterized in that: The top of the workbench (1) and one side of one supporting table (4) are provided with a first conveying table (44), the inner cavity of the first conveying table (44) is rotatably connected with a first rotating roller (45), the inner cavity of the first conveying table (44) and one side of the first rotating roller (45) are rotatably connected with a second rotating roller (46), the first rotating roller (45) and the second rotating roller (46) are drivingly connected through a first conveying belt (47), the working surface of the first conveying belt (47) is provided with a plurality of push blocks (48), one side of the first conveying table (44) is provided with a fifth servo motor (49), and the output end of the fifth servo motor (49) is fixedly connected with one end of the first rotating roller (45).

7. A new type of large slurry pump shell welding equipment according to claim 6, characterized in that: The top of the workbench (1) and one side of another support table (4) are provided with a second conveying table (50), a first conveying roller (52) is rotatably connected in the inner cavity of the second conveying table (50), a second conveying roller (53) is rotatably connected to the end of the inner cavity of the second conveying table (50) away from the first conveying roller (52), the first conveying roller (52) and the second conveying roller (53) are drivingly connected through a second conveying belt (54), and one side of the second conveying table (50) is provided with a sixth servo motor (51), and the output end of the sixth servo motor (51) is fixedly connected with one end of the second conveying roller (53).

8. A new type of large slurry pump shell welding equipment according to claim 7, characterized in that: One side of the push block (48) is provided with an electric telescopic rod (11), the telescopic rod of the electric telescopic rod (11) is provided with a second connecting plate (33), and the bottom of the support table (4) is provided with two hydraulic cylinders (42), and the piston rod of the hydraulic cylinder (42) is fixedly connected with the bottom of the support plate (43).

9. A welding method using the new large slurry pump casing welding apparatus according to claim 8, characterized by: The steps include: S1: first, the output end of the fifth servo motor (49) drives the first rotating roller (45) to rotate, so that the first rotating roller (45) drives the second rotating roller (46) to rotate through the first conveying belt (47), so that the first conveying belt (47) drives the pump shell body (12) to move, and the piston rod of the hydraulic cylinder (42) pushes the support plate (43) to move upwards, so that the top of the support plate (43) is at the same horizontal line as the top of the first conveying table (44), so that one end of the pump shell body (12) is moved to the support plate (43) by the push block (48), so that the pump shell body (12) is sleeved outside the mandrel (7), then the telescopic rod of the electric telescopic rod (11) pushes the second connecting plate (33) to move, so that the second connecting plate (33) pushes the pump shell body (12) to be completely sleeved outside the mandrel (7), and then the telescopic rod of the electric telescopic rod (11) drives the second connecting plate (33) to reset; S2: then the output end of the second servo motor (16) drives the first screw rod (14) to rotate, so that the first screw rod (14) drives the sliding block (15) to move, so that the sliding block (15) drives the moving box (17) to move in the movable groove (55), so that the moving column (22) moves to one end of the mandrel (7), then the output end of the third servo motor (19) drives the second screw rod (18) to rotate, so that the moving block (20) drives the moving column (22) to move, so that the fixed block (25) is sleeved outside the fixed block (25), and the limiting block (27) is located in the fixed groove (26), then the piston rod of the second air cylinder (29) pushes one end of the clamping column (30) to insert into the clamping groove (31), and the mandrel (7) is fixed. S3: Then the piston rod of the third cylinder (34) pushes the second clamping plate (32) to move, so that the second clamping plate (32) moves along the outside of the mandrel (7), while the piston rod of the first air pump (8) pushes the first clamping plate (10) to slide along the outside of the mandrel (7), so that the second clamping plate (32) and the first clamping plate (10) clamp the pump shell body (12), and then the piston rod of the fourth cylinder (35) pushes the support plate (36) to move, so that the support plate (36) is in contact with the inner cavity of one end of the pump shell body (12), thereby limiting one end of the pump shell body (12); S4: Then the output end of the fourth servo motor (41) drives the rotating shaft (40) to rotate, so that the second gear (39) rotates, the first gear (38) is driven to rotate by the second gear (39), the mandrel (7) is rotated, and the pump shell body (12) is rotated by the second clamping plate (32), the first clamping plate (10) and the support plate (36), thereby adjusting the angle of the pump shell body (12) to facilitate welding; S5: After welding is completed, the output end of the first servo motor (2) drives the mounting block (3) to rotate, so that one support table (4) is rotated to one side of the second conveying table (50), and then the other support table (4) is rotated to one side of the first conveying table (44), at this time the first rotating roller (45) continues to run, and the feeding work of the pump shell body (12) is continued, and the piston rod of the second cylinder (29) on the support table (4) on one side of the second conveying table (50) drives the clamping column (30) to move to the inside of the connecting cavity (28), so that one end of the clamping column (30) moves out of the inside of the clamping groove (31), then the output end of the third servo motor (19) drives the second lead screw (18) to rotate in reverse, so that the moving block (20) drives the moving column (22) to move away from the mandrel (7), so that the limiting block (27) moves out of the inside of the fixed groove (26), then the output end of the second servo motor (16) drives the first lead screw (14) to rotate in reverse, so that the sliding block (15) drives the moving box (17) to move, so that the moving column (22) moves to one side of the mandrel (7), then the telescopic rod of the first air pump (8) pushes the first clamping plate (10) to move, so that the pump shell body (12) moves along the support plate (43) to the second conveying belt (54), then the output end of the sixth servo motor (51) drives the second conveying roller (53) to rotate, so that the second conveying roller (53) drives the first conveying roller (52) to rotate through the second conveying belt (54), thereby driving the welded pump shell body (12) to move to the next station.

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