A fire pump impeller processing correction and shaping device

Abstract

The present invention belongs to the field of welding correction and shaping, and specifically discloses a fire pump impeller processing correction and shaping device, including a blade synchronous correction mechanism, a blade correction control mechanism, an internal support type coaxial fastening mechanism and a rotary welding mechanism. The present invention proposes a blade correction control mechanism, which can make the inner rotating circle follow the linkage rotation when adjusting the outer rotating circle through linkage, and when adjusting the curvature, only the position of the inner correction rod can be adjusted; in addition, since the manipulator needs to rotate when welding the annularly evenly distributed arc blades, the present invention also creatively proposes an internal support type coaxial fastening mechanism, which automatically completes the axial center positioning and locking and fixing of the impeller base plate through the rotational movement of the manipulator before welding through internal expansion, which greatly simplifies the structure and operation steps.

Description

Technical Field

[0001] The invention belongs to the technical field of welding correction and shaping, and in particular relates to a fire pump impeller processing correction and shaping device. Background Art

[0002] The impeller of a fire pump consists of a base plate and arc-shaped blades vertically fixed on the base plate. There are two processing methods for the impeller: milling and welding. For most working conditions, a lower-cost combined welding method can be used. This processing method is to first correct the blades to a suitable shape, and then connect them to the base plate by laser welding.

[0003] Since the blades are evenly distributed in a ring in several groups, factors such as whether the blades in each group are evenly distributed, whether the inclination angle and curvature are consistent will affect the stability of the impeller at high-speed rotation and the stability of the water pumping rate.

[0004] The current blade pre-correction method, on the one hand, is difficult to ensure the consistency between the blades, and on the other hand, is difficult to flexibly adjust according to needs when faced with impellers of different models and different blade position requirements. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a fire pump impeller processing correction and shaping device that can uniformly adjust the inclination angle and curvature of each arc blade; in order to improve the adjustability of the arc blades and the consistency between the arc blades, the present invention proposes a blade synchronous correction mechanism, which can adjust all the arc blades at the same time through synchronous adjustment. Since the position of the arc blades is controlled by three characteristic points, when adjusting the inclination, it is necessary to link the outer correction rod and the inner correction rod to adjust, but the outer correction rod and the inner correction rod cannot be relatively fixed (the rotation angle of the outer correction rod relative to the center is slightly larger than the rotation angle of the inner correction rod relative to the center, otherwise the curvature of the arc blade will have a large deviation). Therefore, the present invention also proposes a blade correction control mechanism, which can make the inner rotation circle follow the linkage rotation when adjusting the outer rotation circle through linkage, and when adjusting the curvature, only the position of the inner correction rod can be adjusted.

[0006] In addition, since the robot needs to rotate when welding the annularly evenly distributed arc blades, the present invention also creatively proposes an internally supported coaxial fastening mechanism. Through the rotational movement of the robot, the axial positioning and locking fixation of the impeller base plate are automatically completed by internal expansion before welding, which greatly simplifies the structure and operation steps.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a fire pump impeller processing correction and shaping device, including a blade synchronous correction mechanism, a blade correction control mechanism, an inner support type coaxial fastening mechanism and a rotary welding mechanism, wherein the blade correction control mechanism is arranged on the blade synchronous correction mechanism, the inner support type coaxial fastening mechanism is arranged on the blade synchronous correction mechanism, and the rotary welding mechanism is arranged on the blade synchronous correction mechanism;

[0008] Furthermore, the blade synchronous correction mechanism includes a frame assembly and a rotation correction assembly, and the rotation correction assembly is rotatably arranged on the frame assembly.

[0009] By rotating the blade synchronous correction mechanism, the inclination and bending amplitude of each arc-shaped blade can be adjusted at the same time. Through the overall adjustment method, it is helpful to ensure the consistency of each arc-shaped blade.

[0010] Preferably, the frame assembly includes a main body base plate, a supporting frame and a fixed guide frame, the supporting frame is arranged on the main body base plate, the fixed guide frame is fixedly connected to the supporting frame, the outer side of the central circular ring of the fixed guide frame is evenly distributed in an annular shape with stop steps, and the top of the fixed guide frame is provided with a motor mounting platform.

[0011] As a further preferred embodiment of the present invention, the rotation correction assembly includes an outer rotating ring, an inner rotating ring and arc-shaped blades, the outer rotating ring and the inner rotating ring are rotatably arranged on a fixed guide frame, the outer rotating ring and the inner rotating ring are coaxially arranged with the fixed guide frame, the outer rotating ring is arrayed with outer correction rods, the inner rotating ring is arrayed with inner correction rods, the outer rotating ring is also provided with an outer arc-shaped gear ring, the inner rotating ring is also provided with an inner arc-shaped gear ring, and the arc-shaped blades are located between the stop step, the outer correction rod and the inner correction rod.

[0012] When the outer rotating circle rotates, the inner rotating circle can also rotate through the linkage of the blade correction control mechanism, thereby maintaining the contact between the inner correction rod and the arc blade and the support of the inner correction rod to the arc blade, and then independently controlling the overall inclination of the arc blade and reducing the curvature change of the arc blade.

[0013] Furthermore, the blade correction control mechanism includes a correction drive component, a tilt adjustment component and a curvature adjustment component. The correction drive component is arranged on the frame component, and the tilt adjustment component and the curvature adjustment component are rotatably arranged on the frame component.

[0014] Preferably, the correction drive assembly includes a drive motor and a driving gear, the drive motor is arranged on a motor mounting table, the driving gear is engaged with the output shaft of the drive motor, the tilt adjustment assembly includes a tilt adjustment shaft and a driven gear, the tilt adjustment shaft is rotatably arranged in a fixed guide frame, the tilt adjustment shaft is provided with a shaft gear portion 1 that meshes with an outer arc-shaped gear ring, the driven gear is engaged with the tilt adjustment shaft, and the driving gear and the driven gear are engaged for transmission.

[0015] As a further preferred embodiment of the present invention, the curvature adjustment assembly includes a curvature adjustment shaft, a sliding gear and a reset spring. The curvature adjustment shaft rotates on a fixed guide frame. The curvature adjustment shaft is provided with a shaft gear portion 2 that meshes with the inner arc gear ring. The curvature adjustment shaft is also provided with a polygonal sliding rod. The sliding gear is engaged and slidably arranged on the polygonal sliding rod. The sliding gear is provided with a curvature adjustment handle. The reset spring is arranged between the shaft gear portion 2 and the sliding gear.

[0016] By means of sliding decoupling of the sliding gear, the rotation of the inner rotating circle can be independently controlled when the outer rotating circle is separated, thereby adjusting the curvature of the arc-shaped blades individually.

[0017] Furthermore, the internally supported coaxial fastening mechanism includes a base plate support assembly, a synchronous expansion fastening assembly and a fastening and retaining assembly, the base plate support assembly is arranged on the frame assembly, the synchronous expansion fastening assembly is arranged between the base plate support assembly and the fastening and retaining assembly, and the fastening and retaining assembly is rotatably arranged in the base plate support assembly.

[0018] The internally supported coaxial fastening mechanism can utilize the rotation of the welding robot itself. Before welding, a small-angle pre-rotation can be performed to drive the internally supported coaxial fastening mechanism to lock and fix the impeller base plate. On the one hand, the coaxiality between the impeller base plate and the blade synchronous correction mechanism can be well maintained; on the other hand, since there is no need to set up an independent driving mechanism, the driving structure and operating steps are greatly simplified.

[0019] Preferably, the base plate support assembly includes a countersunk support column and an impeller base plate, the countersunk support column is fixedly connected to the center position of the support frame, the countersunk support column is provided with an end sleeve, the end sleeve is annularly evenly provided with top block slide grooves, the impeller base plate is provided with a sleeve portion and a flange portion, the impeller base plate is sleeved on the end sleeve through the sleeve portion, and the flange portion is in close contact with the arc-shaped blade.

[0020] The inner diameter of the sleeve part is slightly larger than the outer diameter of the end sleeve, so the impeller base plate can be easily taken and placed in the unlocked state. When the synchronous top block expands synchronously toward the outside, the sleeve part can be supported and fixed from the inside, which can not only achieve the technical purpose of tightening, but also take into account the function of automatic position adjustment.

[0021] As a further preferred embodiment of the present invention, the synchronous expansion fastening assembly includes a synchronous top block and an elastic top rod, the synchronous top block is slidably engaged in the top block slide groove, and one end of the elastic top rod is hinged to the synchronous top block.

[0022] The elastic push rod itself is elastic and can continuously provide sufficient supporting force for the synchronous push block through its own bending during the frequent contact and disengagement of the inner elastic ratchet and the outer elastic ratchet. At the moment when the inner elastic ratchet and the outer elastic ratchet disengage, even if the sleeve is rotated by a small angle by tightening, the elastic push rod still remains bent during this process, so the synchronous push block can provide sufficient supporting force to the sleeve.

[0023] As a further preferred embodiment of the present invention, the fastening and retaining assembly includes a fastening rotating sleeve and a fastening rotating shaft, the fastening rotating sleeve is rotatably arranged in the countersunk support column, the fastening rotating sleeve is evenly distributed with hinged window portions in an annular shape, the other end of the elastic push rod is hinged in the hinged window portion, the inner annular shape of the fastening rotating sleeve is evenly distributed with internal elastic ratchets, the internal elastic ratchets are located at both ends of the hinged window portion, the fastening rotating shaft is rotatably arranged in the countersunk support column, the outer annular shape of the fastening rotating shaft is evenly distributed with external elastic ratchets matching the inner elastic ratchets, and a polygonal shaft is also provided on the fastening rotating shaft.

[0024] The rotation of the fastening rotating shaft can cause the fastening rotating sleeve to rotate to a certain extent. Then, when the fastening rotating shaft continues to rotate unidirectionally, the fastening rotating sleeve will only reciprocate within a smaller angle range during the frequent contact and separation of the inner elastic ratchet and the outer elastic ratchet due to elastic deformation.

[0025] Furthermore, the rotary welding mechanism includes a sliding feed assembly, a rotating assembly and a welding manipulator, the sliding feed assembly is arranged on the main body bottom plate, the rotating assembly is arranged on the sliding feed assembly, and the welding manipulator is arranged on the rotating assembly.

[0026] Preferably, the rotating assembly includes a rotating bracket, a direct-drive rotating motor, a rotating support and a polygonal connecting sleeve, the rotating bracket is arranged on the sliding advance assembly, the direct-drive rotating motor is arranged on the rotating bracket, the rotating support is arranged on the rotating part of the direct-drive rotating motor, the polygonal connecting sleeve is arranged on the rotating support, and the welding robot is arranged on the rotating support.

[0027] Through the linkage of the polygonal connecting sleeve, the rotational movement originally used to drive the welding robot can be utilized to simultaneously perform continuous unidirectional rotational drive on the fastening rotating shaft, thereby completing the positioning and fastening locking of the impeller base plate.

[0028] The beneficial effects achieved by the present invention using the above structure are as follows:

[0029] (1) The internal support coaxial fastening mechanism can utilize the rotation of the welding robot itself. Before welding, a small angle pre-rotation can be performed to drive the internal support coaxial fastening mechanism to lock and fix the impeller base plate. On the one hand, the coaxiality between the impeller base plate and the blade synchronous correction mechanism can be well maintained; on the other hand, since an independent driving mechanism does not need to be set up, the driving structure and operating steps are greatly simplified.

[0030] (2) The inner diameter of the sleeve is slightly larger than the outer diameter of the end sleeve. Therefore, the impeller base plate can be easily taken in and out when it is not locked. When the synchronous top block expands synchronously toward the outside, the sleeve can be supported and fixed from the inside, which can achieve the technical purpose of tightening while taking into account the function of automatic position adjustment.

[0031] (3) The elastic push rod itself is elastic and can continuously provide sufficient supporting force for the synchronous push block through its own bending during the frequent contact and disengagement between the inner elastic ratchet and the outer elastic ratchet. At the moment when the inner elastic ratchet and the outer elastic ratchet disengage, even if the sleeve is rotated by a small angle due to tightening, the elastic push rod still remains bent during this process. Therefore, the synchronous push block can provide sufficient supporting force for the sleeve.

[0032] (4) The rotation of the fastening rotating shaft can cause the fastening rotating sleeve to rotate to a certain extent. Then, when the fastening rotating shaft continues to rotate unidirectionally, the fastening rotating sleeve will only reciprocate within a smaller angle range during the process in which the inner elastic ratchet and the outer elastic ratchet frequently contact and separate due to elastic deformation.

[0033] (5) By rotating the blade synchronous correction mechanism, the inclination and bending amplitude of each arc-shaped blade can be adjusted at the same time. Through the overall adjustment method, it is helpful to ensure the consistency of each arc-shaped blade.

[0034] (6) When the outer rotating circle rotates, the inner rotating circle can also rotate through the linkage of the blade correction control mechanism, thereby maintaining the contact between the inner correction rod and the arc blade and the support of the inner correction rod to the arc blade, thereby independently controlling the overall inclination of the arc blade and reducing the curvature change of the arc blade.

[0035] (7) By decoupling the sliding gear, the rotation of the inner rotating circle can be independently controlled without being separated from the outer rotating circle, thereby adjusting the curvature of the arc-shaped blades individually.

[0036] (8) Through the linkage of the polygonal connecting sleeve, the rotational movement originally used to drive the welding robot can be utilized to continuously drive the fastening rotating shaft in one direction, thereby completing the positioning and fastening locking of the impeller base plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A three-dimensional diagram of a fire pump impeller processing, correction and shaping device proposed by the present invention;

[0038] Figure 2 This is a front view of a fire pump impeller processing, correction and shaping device proposed by the present invention;

[0039] Figure 3 This is a left view of a fire pump impeller processing correction and shaping device proposed by the present invention;

[0040] Figure 4 A top view of a fire pump impeller processing, correction and shaping device proposed by the present invention;

[0041] Figure 5 for Figure 2 A cross-sectional view along the cutting line AA;

[0042] Figure 6 for Figure 3 A cross-sectional view along the cutting line BB;

[0043] Figure 7 for Figure 2 A cross-sectional view along the cutting line CC;

[0044] Figure 8 An exploded view of a fire pump impeller processing correction and shaping device proposed by the present invention;

[0045] Fig. 9 for Figure 6 A partial enlarged view of point Ⅰ in the middle;

[0046] Fig.10 for Figure 6 A partial enlarged view of the middle II;

[0047] Fig.11 for Figure 5 A partial enlarged view of the middle part III;

[0048] Fig.12 for Figure 8 A partial enlarged view of the middle IV;

[0049] Fig.13 for Figure 7 A partial enlarged view of point V in the middle;

[0050] Fig.14 Schematic diagram of the position comparison of the curved blade before and after correction.

[0051] Among them, 1. Blade synchronous correction mechanism, 2. Blade correction control mechanism, 3. Internal support coaxial fastening mechanism, 4. Rotary welding mechanism, 5. Frame assembly, 6. Rotary correction assembly, 7. Main body bottom plate, 8. Support frame, 9. Fixed guide frame, 10. Outer rotating circle, 11. Inner rotating circle, 12. Arc blade, 13. Stop step, 14. Motor mounting table, 15. Outer correction rod, 16. Outer arc gear ring, 17. Inner correction rod, 18. Inner arc gear ring, 19. Correction drive assembly, 20. Tilt adjustment assembly, 21. Curvature adjustment assembly, 22. Drive motor, 23. Active gear, 24. Tilt adjustment shaft, 25. Driven gear, 26. Curvature adjustment shaft, 27. Sliding gear, 28. Return spring , 29. Shaft gear part one, 30. Shaft gear part two, 31. Polygonal slide bar, 32. Curvature adjustment handle, 33. Bottom plate support assembly, 34. Synchronous expansion fastening assembly, 35. Fastening and retaining assembly, 36. Countersunk support column, 37. Impeller bottom plate, 38. Synchronous top block, 39. Elastic top rod, 40. Fastening rotating sleeve, 41. Fastening rotating shaft, 42. End sleeve, 43. Top block slide groove, 44. Sleeve part, 45. Flange part, 46. Articulated window part, 47. Internal elastic ratchet, 48. External elastic ratchet, 49. Polygonal shaft, 50. Sliding feed assembly, 51. Rotation assembly, 52. Welding manipulator, 53. Rotation bracket, 54. Direct drive rotating motor, 55. Rotation support, 56. Polygonal connecting sleeve.

[0052] 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. DETAILED DESCRIPTION

[0053] 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.

[0054] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0055] like Figure 1 to Figure 13 As shown, the present invention proposes a fire pump impeller processing correction and shaping device, comprising a blade synchronous correction mechanism 1, a blade correction control mechanism 2, an inner support type coaxial fastening mechanism 3 and a rotary welding mechanism 4, the blade correction control mechanism 2 is arranged on the blade synchronous correction mechanism 1, the inner support type coaxial fastening mechanism 3 is arranged on the blade synchronous correction mechanism 1, and the rotary welding mechanism 4 is arranged on the blade synchronous correction mechanism 1;

[0056] The blade synchronous correction mechanism 1 comprises a frame assembly 5 and a rotation correction assembly 6 , and the rotation correction assembly 6 is rotatably arranged on the frame assembly 5 .

[0057] By rotating the blade synchronous correction mechanism 1 , the inclination and bending amplitude of each arc-shaped blade 12 can be adjusted simultaneously, and the overall adjustment method is conducive to ensuring the consistency of each arc-shaped blade 12 .

[0058] The frame assembly 5 includes a main body base plate 7, a supporting frame 8 and a fixed guide frame 9. The supporting frame 8 is arranged on the main body base plate 7, and the fixed guide frame 9 is fixedly connected to the supporting frame 8. The outer side of the central circular ring of the fixed guide frame 9 is evenly distributed with a stop step portion 13, and the top of the fixed guide frame 9 is provided with a motor mounting platform 14.

[0059] The rotation correction assembly 6 includes an outer rotating ring 10, an inner rotating ring 11 and an arc-shaped blade 12. The outer rotating ring 10 and the inner rotating ring 11 are rotatably arranged on a fixed guide frame 9. The outer rotating ring 10 and the inner rotating ring 11 are coaxially arranged with the fixed guide frame 9. An outer correction rod 15 is arrayed on the outer rotating ring 10, and an inner correction rod 17 is arrayed on the inner rotating ring 11. The outer rotating ring 10 is also provided with an outer arc-shaped gear ring 16, and the inner rotating ring 11 is also provided with an inner arc-shaped gear ring 18. The arc-shaped blade 12 is located between the stop step 13, the outer correction rod 15 and the inner correction rod 17.

[0060] When the outer rotating circle 10 rotates, the inner rotating circle 11 can also rotate through the linkage of the blade correction control mechanism 2, thereby maintaining the contact between the inner correction rod 17 and the arc-shaped blade 12 and the support of the inner correction rod 17 to the arc-shaped blade 12, and then independently controlling the overall inclination of the arc-shaped blade 12 and reducing the curvature change of the arc-shaped blade 12.

[0061] The internally supported coaxial fastening mechanism 3 includes a base plate support assembly 33, a synchronous expansion fastening assembly 34 and a fastening and retaining assembly 35. The base plate support assembly 33 is arranged on the frame assembly 5, the synchronous expansion fastening assembly 34 is arranged between the base plate support assembly 33 and the fastening and retaining assembly 35, and the fastening and retaining assembly 35 is rotatably arranged in the base plate support assembly 33.

[0062] The internally supported coaxial fastening mechanism 3 can utilize the rotation of the welding robot 52 itself. Before welding, a small-angle pre-rotation can be performed to drive the internally supported coaxial fastening mechanism 3 to lock and fix the impeller base plate 37. On the one hand, the coaxiality between the impeller base plate 37 and the blade synchronous correction mechanism 1 can be well maintained; on the other hand, since there is no need to set up an independent driving mechanism, the driving structure and operating steps are greatly simplified.

[0063] The bottom plate support assembly 33 includes a countersunk support column 36 and an impeller bottom plate 37. The countersunk support column 36 is fixedly connected to the center position of the support frame 8. An end sleeve 42 is provided on the countersunk support column 36. Top block slide grooves 43 are evenly distributed in an annular manner on the end sleeve 42. A sleeve portion 44 and a flange portion 45 are provided on the impeller bottom plate 37. The impeller bottom plate 37 is sleeved on the end sleeve 42 through the sleeve portion 44, and the flange portion 45 is in close contact with the arc-shaped blade 12.

[0064] The inner diameter of the sleeve portion 44 is slightly larger than the outer diameter of the end sleeve 42, so the impeller base plate 37 can be easily taken and placed in a non-locked state, and when the synchronous top block 38 expands synchronously toward the outside, the sleeve portion 44 can be supported and fixed from the inside, which can achieve the technical purpose of tightening while taking into account the function of automatic position adjustment.

[0065] The synchronous expansion fastening assembly 34 includes a synchronous top block 38 and an elastic top rod 39 . The synchronous top block 38 is slidably engaged in the top block slide groove 43 , and one end of the elastic top rod 39 is hinged to the synchronous top block 38 .

[0066] The elastic push rod 39 itself is elastic, and can continuously provide sufficient supporting force for the synchronous push block 38 through its own bending during the frequent contact and disengagement between the inner elastic ratchet 47 and the outer elastic ratchet 48. At the moment when the inner elastic ratchet 47 and the outer elastic ratchet 48 disengage, even if the tightening rotating sleeve 40 will rotate a small angle, during this process, the elastic push rod 39 still remains bent, so the synchronous push block 38 can provide sufficient supporting force to the sleeve portion 44.

[0067] The fastening and retaining assembly 35 includes a fastening rotating sleeve 40 and a fastening rotating shaft 41. The fastening rotating sleeve 40 is rotatably arranged in the countersunk support column 36. The fastening rotating sleeve 40 is evenly distributed in an annular shape with hinged windows 46. The other end of the elastic push rod 39 is hinged in the hinged window 46. The inner ring of the fastening rotating sleeve 40 is evenly distributed with internal elastic ratchet teeth 47. The internal elastic ratchet teeth 47 are located at both ends of the hinged window 46. The fastening rotating shaft 41 is rotatably arranged in the countersunk support column 36. The outer ring of the fastening rotating shaft 41 is evenly distributed with external elastic ratchet teeth 48 matching the internal elastic ratchet teeth 47. A polygonal shaft 49 is also provided on the fastening rotating shaft 41.

[0068] The rotation of the fastening rotating shaft 41 can cause the fastening rotating sleeve 40 to rotate to a certain extent. Then, when the fastening rotating shaft 41 continues to rotate unidirectionally, the fastening rotating sleeve 40 will only reciprocate within a smaller angle range during the frequent contact and separation of the inner elastic ratchet 47 and the outer elastic ratchet 48 due to elastic deformation.

[0069] The rotary welding mechanism 4 includes a sliding feed assembly 50 , a rotating assembly 51 and a welding robot 52 . The sliding feed assembly 50 is disposed on the main body bottom plate 7 , the rotating assembly 51 is disposed on the sliding feed assembly 50 , and the welding robot 52 is disposed on the rotating assembly 51 .

[0070] The rotating assembly 51 includes a rotating bracket 53, a direct-drive rotating motor 54, a rotating support 55 and a polygonal connecting sleeve 56. The rotating bracket 53 is arranged on the sliding advance assembly 50, the direct-drive rotating motor 54 is arranged on the rotating bracket 53, the rotating support 55 is arranged on the rotating part of the direct-drive rotating motor 54, the polygonal connecting sleeve 56 is arranged on the rotating support 55, and the welding robot 52 is arranged on the rotating support 55.

[0071] Through the linkage of the polygonal connecting sleeve 56 , the rotational movement originally used to drive the welding robot 52 can be utilized to simultaneously perform continuous unidirectional rotational drive on the fastening rotating shaft 41 , thereby completing the positioning and fastening locking of the impeller base plate 37 .

[0072] The blade correction control mechanism 2 includes a correction drive assembly 19 , a tilt adjustment assembly 20 and a curvature adjustment assembly 21 . The correction drive assembly 19 is arranged on the frame assembly 5 , and the tilt adjustment assembly 20 and the curvature adjustment assembly 21 are rotatably arranged on the frame assembly 5 .

[0073] The correction drive assembly 19 includes a drive motor 22 and a driving gear 23. The drive motor 22 is arranged on the motor mounting platform 14. The driving gear 23 is engaged with the output shaft of the drive motor 22. The tilt adjustment assembly 20 includes a tilt adjustment shaft 24 and a driven gear 25. The tilt adjustment shaft 24 is rotatably arranged in the fixed guide frame 9. The tilt adjustment shaft 24 is provided with a shaft gear portion 29 that meshes with the outer arc-shaped gear ring 16. The driven gear 25 is engaged with the tilt adjustment shaft 24. The driving gear 23 and the driven gear 25 are engaged for transmission.

[0074] The curvature adjustment assembly 21 includes a curvature adjustment shaft 26, a sliding gear 27 and a reset spring 28. The curvature adjustment shaft 26 rotates on the fixed guide frame 9. The curvature adjustment shaft 26 is provided with a shaft gear portion 2 30 meshing with the inner arc gear ring 18. The curvature adjustment shaft 26 is also provided with a polygonal slide bar 31. The sliding gear 27 is engaged and slidably arranged on the polygonal slide bar 31. The sliding gear 27 is provided with a curvature adjustment handle 32. The reset spring 28 is arranged between the shaft gear portion 2 30 and the sliding gear 27.

[0075] Through the sliding decoupling of the sliding gear 27 , the rotation of the inner rotating circle 11 can be independently controlled when the outer rotating circle 10 is separated, thereby adjusting the curvature of the arc-shaped blades 12 individually.

[0076] like Fig.14 As shown, o represents the center position of the outer rotating circle 10 and the inner rotating circle 11, AB represents the initial position of the arc blade 12, e represents the position of the outer correction rod 15, and f represents the position of the inner correction rod 17. If the relative positions of the outer correction rod 15 and the inner correction rod 17 are fixed, that is, the triangle efo is rotated a certain angle to gho, the inclination angle of the arc blade 12 can be changed. However, as shown in the figure, if the arc blade 12 is rotated from the AB position to the AC position while keeping its own curvature unchanged, then the point h is not actually in contact with AC. Therefore, in order to avoid a significant change in the curvature of the arc blade 12 during the inclination of the arc blade 12, the outer rotating circle 10 and the inner rotating circle 11 cannot be relatively still, but must rotate together in the same direction, but the rotation angle of the outer rotating circle 10 is greater than the rotation angle of the inner rotating circle 11.

[0077] When in use, the user first needs to clamp one end of the arc blade 12 at the stop step 13, then place the outer correction rod 15 on the outer side of the bend of the arc blade 12, and place the inner correction rod 17 on the inner side of the bend of the arc blade 12, and then start the drive motor 22. When the drive motor 22 rotates with the driving gear 23, the tilt adjustment shaft 24 can be rotated through the meshing transmission of the driving gear 23 and the driven gear 25. When the tilt adjustment shaft 24 rotates, the outer rotating circle 10 can be driven to rotate through the shaft gear part 29;

[0078] Since the driven gear 25 is meshed with the sliding gear 27 at this time, the curvature adjustment shaft 26 will also rotate accordingly, and drive the inner rotating circle 11 through the shaft gear portion 2 30 to rotate in the same direction as the outer rotating circle 10. However, through the transmission ratio design, the rotation angular velocity of the inner rotating circle 11 is lower than the rotation angular velocity of the outer rotating circle 10.

[0079] Through the coordinated rotation of the outer rotating circle 10 and the inner rotating circle 11 , the inclination angles of the groups of arc-shaped blades 12 can be changed synchronously with the stop step 13 as a rotation reference point.

[0080] If you need to change the curvature of the arc-shaped blade 12, you only need to manually press the curvature adjustment handle 32 to release the connection between the sliding gear 27 and the driven gear 25 by axial sliding of the sliding gear 27, and then rotate the curvature adjustment shaft 26 by rotating the curvature adjustment handle 32 to drive the inner rotating circle 11 to rotate alone. At this time, since the outer rotating circle 10 is still connected to the drive motor 22, it can remain fixed. When the outer rotating circle 10 is fixed, the curvature of the arc-shaped blade 12 can be adjusted by rotating the inner rotating circle 11 alone.

[0081] According to the requirements, after the arc blade 12 is corrected, the impeller bottom plate 37 is installed on the end sleeve 42 and the flange portion 45 is closely attached to the side of the arc blade 12. Then, the sliding advance assembly 50 controls the rotating assembly 51 as a whole to approach the blade synchronous correction mechanism 1 until the polygonal connecting sleeve 56 is slidably sleeved on the polygonal shaft 49 through its own polygonal inner hole. The sliding advance assembly 50 is driven manually or electrically.

[0082] Then, the direct-drive rotary motor 54 rotates the rotary support 55 and the polygonal connecting sleeve 56 to a certain angle, and at the same time, the fastening rotary shaft 41 is rotated;

[0083] When the fastening rotating shaft 41 just starts to rotate, the inner elastic ratchet 47 and the outer elastic ratchet 48 abut against each other, so the fastening rotating sleeve 40 will rotate along with the fastening rotating shaft 41, and the synchronous ejector block 38 will be ejected by the elastic ejector rod 39. After the synchronous ejector block 38 and the inside of the sleeve portion 44 are in contact, the elastic bending deformation of the elastic ejector rod 39 allows the fastening rotating sleeve 40 to continue to rotate, and at the same time increases the squeezing force of the synchronous ejector block 38 and the sleeve portion 44 bracket. Since the synchronous ejector block 38 extends synchronously and has the same expansion support force, the impeller bottom plate 37 will be adjusted to a position coaxial with the countersunk support column 36 and fixed;

[0084] As the elastic force stored in the elastic push rod 39 gradually increases, when the friction force between the inner elastic ratchet 47 and the outer elastic ratchet 48 is not sufficient to push the fastening rotating sleeve 40 to continue rotating, relative sliding will occur between the inner elastic ratchet 47 and the outer elastic ratchet 48; at the moment when the inner elastic ratchet 47 and the outer elastic ratchet 48 are deformed and separated, the fastening rotating sleeve 40 will have a slight rotation, but because the elastic push rod 39 itself has accumulated enough elastic potential energy, the synchronous push block 38 can always apply enough pressure on the sleeve portion 44.

[0085] Since the arc-shaped blades 12 are evenly distributed in an annular shape, the rotating support 55 on which the welding robot 52 is installed also needs to rotate for welding. During the welding process, the direct-drive rotating motor 54 can be paused in the middle of the process, and the rotation direction can be kept unidirectional.

[0086] After all welding is completed, it is only necessary to control the polygonal connecting sleeve 56 to rotate slightly by the direct-drive rotary motor 54 to control the synchronous top block 38 to retract and release the locking fixation of the impeller bottom plate 37, and then the impeller bottom plate 37 can be removed.

[0087] 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.

[0088] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A fire pump impeller processing correction and shaping device, characterized in that: The invention comprises a blade synchronous correction mechanism (1), a blade correction control mechanism (2), an internally supported coaxial fastening mechanism (3) and a rotary welding mechanism (4), wherein the blade correction control mechanism (2) is arranged on the blade synchronous correction mechanism (1), the internally supported coaxial fastening mechanism (3) is arranged on the blade synchronous correction mechanism (1), and the rotary welding mechanism (4) is arranged on the blade synchronous correction mechanism (1); The blade synchronous correction mechanism (1) comprises a frame assembly (5) and a rotation correction assembly (6), wherein the rotation correction assembly (6) is rotatably mounted on the frame assembly (5); The blade correction control mechanism (2) comprises a correction drive assembly (19), a tilt adjustment assembly (20) and a curvature adjustment assembly (21); the correction drive assembly (19) is arranged on the frame assembly (5); and the tilt adjustment assembly (20) and the curvature adjustment assembly (21) are rotatably arranged on the frame assembly (5); The inner support type coaxial fastening mechanism (3) comprises a base plate support assembly (33), a synchronous expansion fastening assembly (34) and a fastening and retaining assembly (35); the base plate support assembly (33) is arranged on the frame assembly (5); the synchronous expansion fastening assembly (34) is arranged between the base plate support assembly (33) and the fastening and retaining assembly (35); and the fastening and retaining assembly (35) is rotatably arranged in the base plate support assembly (33); The frame assembly (5) comprises a fixed guide frame (9), the outer side of the central circular ring of the fixed guide frame (9) is evenly distributed with stop step portions (13), and the top of the fixed guide frame (9) is provided with a motor mounting platform (14); The rotation correction component (6) comprises an outer rotation ring (10), an inner rotation ring (11) and an arc-shaped blade (12); the outer rotation ring (10) and the inner rotation ring (11) are rotatably arranged on a fixed guide frame (9); the outer rotation ring (10) and the inner rotation ring (11) are coaxially arranged with the fixed guide frame (9); an array of outer correction rods (15) are arranged on the outer rotation ring (10); an array of inner correction rods (17) are arranged on the inner rotation ring (11); an outer arc-shaped gear ring (16) is also arranged on the outer rotation ring (10); an inner arc-shaped gear ring (18) is also arranged on the inner rotation ring (11); the arc-shaped blade (12) is located between the stop step (13), the outer correction rod (15) and the inner correction rod (17); The correction drive assembly (19) comprises a drive motor (22) and a driving gear (23); the drive motor (22) is arranged on a motor mounting platform (14); and the driving gear (23) is engaged with an output shaft of the drive motor (22); The tilt adjustment assembly (20) comprises a tilt adjustment shaft (24) and a driven gear (25); the tilt adjustment shaft (24) is rotatably arranged in a fixed guide frame (9); a shaft gear portion (29) meshing with an outer arc-shaped gear ring (16) is provided on the tilt adjustment shaft (24); the driven gear (25) is engaged with the tilt adjustment shaft (24); and the driving gear (23) and the driven gear (25) are meshed for transmission; The curvature adjustment assembly (21) comprises a curvature adjustment shaft (26), a sliding gear (27) and a return spring (28); the curvature adjustment shaft (26) is rotatably mounted on a fixed guide frame (9); a second shaft gear portion (30) meshing with an inner arc gear ring (18) is provided on the curvature adjustment shaft (26); a polygonal slide bar (31) is further provided on the curvature adjustment shaft (26); the sliding gear (27) is slidably mounted on the polygonal slide bar (31); a curvature adjustment handle (32) is provided on the sliding gear (27); and the return spring (28) is disposed between the second shaft gear portion (30) and the sliding gear (27); The frame assembly (5) further comprises a main body bottom plate (7) and a support frame (8), wherein the support frame (8) is arranged on the main body bottom plate (7), and the fixed guide frame (9) is fixedly connected to the support frame (8); The bottom plate support assembly (33) comprises a countersunk support column (36) and an impeller bottom plate (37); the countersunk support column (36) is fixedly connected to the center of the support frame (8); an end sleeve (42) is provided on the countersunk support column (36); top block slide grooves (43) are evenly distributed in an annular pattern on the end sleeve (42); a sleeve portion (44) and a flange portion (45) are provided on the impeller bottom plate (37); the impeller bottom plate (37) is sleeved on the end sleeve (42) through the sleeve portion (44); and the flange portion (45) is in close contact with the arc-shaped blade (12); The synchronous expansion fastening assembly (34) comprises a synchronous top block (38) and an elastic top rod (39); the synchronous top block (38) is slidably engaged in a top block slide groove (43); one end of the elastic top rod (39) is hinged to the synchronous top block (38); The fastening and retaining assembly (35) comprises a fastening rotating sleeve (40) and a fastening rotating shaft (41); the fastening rotating sleeve (40) is rotatably arranged in a countersunk support column (36); hinged window portions (46) are evenly distributed in an annular pattern on the fastening rotating sleeve (40); the other end of the elastic push rod (39) is hinged in the hinged window portion (46); inner elastic ratchet teeth (47) are evenly distributed in an annular pattern on the inside of the fastening rotating sleeve (40); the inner elastic ratchet teeth (47) are located at both ends of the hinged window portion (46); the fastening rotating shaft (41) is rotatably arranged in the countersunk support column (36); outer elastic ratchet teeth (48) matching the inner elastic ratchet teeth (47) are evenly distributed in an annular pattern on the outside of the fastening rotating shaft (41); and a polygonal shaft (49) is also provided on the fastening rotating shaft (41).

2. A fire pump impeller processing, correction and shaping device according to claim 1, characterized in that: The rotary welding mechanism (4) comprises a sliding feed component (50), a rotating component (51) and a welding manipulator (52); the sliding feed component (50) is arranged on a main body bottom plate (7); the rotating component (51) is arranged on the sliding feed component (50); and the welding manipulator (52) is arranged on the rotating component (51).

3. A fire pump impeller processing, correction and shaping device according to claim 2, characterized in that: The rotating assembly (51) comprises a rotating bracket (53), a direct-drive rotating motor (54), a rotating support (55) and a polygonal connecting sleeve (56); the rotating bracket (53) is arranged on the sliding feed assembly (50); the direct-drive rotating motor (54) is arranged on the rotating bracket (53); the rotating support (55) is arranged on the rotating part of the direct-drive rotating motor (54); the polygonal connecting sleeve (56) is arranged on the rotating support (55); and the welding robot (52) is arranged on the rotating support (55).

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