A main shaft polishing device for maintenance of a generator set

Abstract

The application discloses a main shaft polishing device for generator set maintenance, and belongs to the technical field of main shaft polishing.The main shaft polishing device for generator set maintenance comprises a support frame, a plurality of rectangularly and symmetrically arranged sliding grooves are formed in the top of the support frame, the sliding grooves are arranged in an open state away from the inner side of the support frame, a rack is slidably connected to the support frame and located in the sliding groove, the rack is limited by the support frame, a lifting gear is transmissionally connected to one side of the rack, the lifting gear is rotationally connected with the support frame, two lifting gears located on one side of the support frame are fixedly connected with a connecting rod, and the connecting rod is rotationally connected with the support frame.The polishing plate with constant clamping force is in contact with the surface of the rotating main shaft by adopting the constant force polishing assembly and the rotating support assembly, even polishing is realized, excessive heat concentration can be effectively avoided, and the hardening or cracking of the surface of the main shaft due to local high temperature can be prevented.

Description

Technical Field

[0001] This invention belongs to the field of spindle grinding technology, specifically relating to a spindle grinding device for generator set maintenance. Background Technology

[0002] The generator set's main shaft is one of the core components, primarily responsible for supporting and connecting the rotor to other mechanical parts, bearing a tremendous mechanical load. During generator set operation, the main shaft drives the generator to produce electricity through rotation. Due to the generator set's continuous high-load operation, the main shaft faces significant mechanical stress, heat variations, and the influence of the external environment. Long-term use can lead to wear, fatigue, or even breakage of the main shaft, affecting the normal operation of the generator set. Therefore, it is necessary to repair it to restore its normal working condition, thereby extending the generator set's service life and avoiding the high costs associated with frequent main shaft replacements.

[0003] In existing technologies, when grinding and repairing the spindle, the generator set's spindle is often clamped and rotated, combined with laser grinding. Although this can achieve efficient surface repair, laser grinding is a high-energy-density process that generates significant heat on the spindle surface. Although the local thermal impact of laser grinding is relatively small, when repairing large areas, the high temperature of the laser may cause the spindle surface temperature to rise sharply, leading to thermal expansion or changes in surface hardness of the material. This is especially true for spindles made of high-strength materials, where temperature changes may affect their mechanical properties and durability, and may even cause localized annealing or deformation of the material during the repair process. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a spindle grinding device for generator set maintenance.

[0005] The technical solution adopted to solve the above technical problems is: a main shaft grinding device for generator set maintenance, including a support frame, and a number of rectangular symmetrically arranged sliding grooves are opened on the top of the support frame. The side of the sliding groove away from the inside of the support frame is open. The support frame located inside the sliding groove is slidably connected to a rack, and the support frame limits the rack. At the same time, a lifting gear is driven to one side of the rack. The lifting gear is rotatably connected to the support frame. Two lifting gears located on one side of the support frame are fixedly connected to a connecting rod, and the connecting rod is rotatably connected to the support frame through it.

[0006] Two servo motors are installed on one side of the support frame, and the output end of the servo motor is rotatably connected to the support frame. At the same time, the through end of the servo motor is fixedly connected to the connecting rod. A constant force grinding component is fixedly connected between the ends of several racks away from the support frame to maintain a constant contact pressure with the spindle and improve repair efficiency.

[0007] The support frame located at the bottom of the constant force grinding assembly is equipped with a rotating support assembly, which covers a larger repair area of ​​the spindle and reduces repair time.

[0008] The above technical solution allows for flexible adjustment of the support spacing based on the diameter of the main shaft of different generator sets (usually ranging from several hundred millimeters to several meters), ensuring that "two-point symmetrical support" can be formed for main shafts of different lengths and diameters. Compared with traditional chuck clamping (which easily leads to concentrated force on the shaft end) or single roller support (poor stability), double roller support has a larger contact area and a more reasonable distribution of support points, which can disperse the weight of the main shaft and the centrifugal force during rotation, and avoid bending deformation of long shaft parts due to improper clamping.

[0009] Furthermore, the rotating support assembly includes two rotating support components fixedly connected to the inner wall of the support frame, and the interior of the rotating support component is a hollow structure. Two sliders are installed inside the rotating support component, and the sliders are slidably connected to the rotating support component, with the rotating support component limiting the sliders. A first rotating frame and a second rotating frame are rotatably connected to the center of the outer wall of the rotating support components on both sides of the support frame, respectively. The other ends of the first and second rotating frames are rotatably connected to the inner wall of the support frame. A main gear is rotatably connected inside the first rotating frame, and two first gears are driven to the sides of the main gear. Both first gears are rotatably connected to the first rotating frame.

[0010] The above technical solution can provide a constant clamping force, ensuring that the grinding disc always maintains a certain contact pressure with the spindle, thereby achieving a uniform grinding effect and reducing possible material damage or surface scratches.

[0011] Furthermore, a second gear is connected to the first gear on the side away from the main gear, and a first connecting plate is rotatably connected to both sides of the second gear. At the same time, the other end of the first connecting plate is rotatably connected to the first rotating frame. The connecting shaft of the first rotating frame is connected through the first connecting plate, and the through end of the connecting shaft is rotatably connected through the slider. Meanwhile, a roller is rotatably connected between the two sliders located inside the support frame. Several rubber rings arranged linearly and equally spaced are fixedly connected to the outer wall of the roller, and the through end of the connecting shaft of the first rotating frame is fixedly connected to the roller.

[0012] Furthermore, the two ends of the second rotating frame are rotatably connected to the second connecting plate, and the other end of the second connecting plate is rotatably connected to the slider in the rotating support assembly. At the same time, the ends of the first and second rotating frames away from the rotating support assembly are fixedly connected to the worm gear. The bottom of the worm gear is connected to the worm shaft, and the bottom of the support frame is rotatably connected to the chain assembly. The sprocket connecting shaft in the chain assembly is rotatably connected to the support frame.

[0013] Through the above technical solutions, constant clamping force and uniform linear grinding process can effectively improve the surface quality after repair. During the grinding process, the surface roughness will not change due to unstable clamping or uneven rotation. The repaired surface can achieve a high degree of smoothness, reduce minor surface defects such as scratches and uneven marks, thereby enhancing the working performance and life of the spindle.

[0014] Furthermore, the sprocket connecting shaft in the chain assembly is fixedly connected to the worm gear at its through end. At the same time, a second servo motor is installed at the bottom of the support frame. The output end of the second servo motor is rotatably connected to the support frame, and the through end of the second servo motor is fixedly connected to the worm gear. Meanwhile, a drive motor is installed on one side of the support frame. The output end of the drive motor is rotatably connected to the support frame and the first rotating frame, and the through end of the drive motor is fixedly connected to the main gear.

[0015] The above technical solution allows for flexible adjustment of grinding intensity based on different degrees of damage to the spindle surface (such as minor scratches, localized wear, and corrosion). For areas with minor damage, the feed rate and pressure can be reduced, while for areas with severe damage, efficiency can be improved.

[0016] Furthermore, the constant force grinding assembly includes a fixed frame fixedly connected to the rack, and a threaded rod rotatably connected inside the fixed frame. The threaded rod is threadedly connected to a movable frame. A servo motor is mounted on one side of the fixed frame. The output end of the servo motor is rotatably connected to the fixed frame, and the through end of the servo motor is fixedly connected to the threaded rod. By rotating the movable frame, the fixed frame is moved axially to achieve adaptive fitting to spindles of different diameters. The movable frame is hollowed out in the middle, and sliding rods are slidably connected to both sides of the bottom of the movable frame. The two ends of the sliding rods are fixedly connected to the fixed frame.

[0017] With the above technical solution, the main shaft can be supported simply by positioning after hoisting, without the need for complicated tooling calibration, which is especially suitable for on-site maintenance of generator sets (where space is limited and hoisting large equipment is inconvenient).

[0018] Furthermore, the movable frame has movable plates slidably connected to both ends, and the movable plates are U-shaped. The interior of the movable plate away from the movable frame is hollow. An adjusting plate is rotatably connected inside the movable plate. A connecting piece is rotatably connected between the ends of the two adjusting plates away from the movable plate. A hydraulic rod is installed in the middle of the movable frame, and the telescopic end of the hydraulic rod is slidably connected to the movable frame. The telescopic end of the hydraulic rod is fixedly connected to the connecting piece. A grinding plate is rotatably connected to the bottom of the movable plate, and the grinding plate is L-shaped. A spring is fixedly connected to one end of the grinding plate, and the other end of the spring is fixedly connected to the movable plate.

[0019] With the above technical solution, if it is necessary to repair the main shafts of multiple generator sets, the repair work can be completed efficiently in a short time by adjusting the clamping force and roller settings, thereby improving the efficiency of the production line and reducing equipment downtime.

[0020] The beneficial effects of the present invention are as follows: (1) The present invention adopts a rotating support assembly, a No. 1 servo motor drives the connecting rod to rotate, so that the lifting gears on both sides of the support frame rotate in opposite directions, so that the rack moves in the vertical direction of the support frame, thereby driving the constant force grinding assembly to move upward as a whole, so that the grinding plate is away from the surface of the main shaft, making it easier for the main shaft to be inserted. The No. 2 servo motor drives the chain assembly to transmit power, so that the two worms rotate at the same time, thereby driving the worm wheels on both sides to rotate synchronously, driving the No. 1 rotating frame and the No. 2 rotating frame to rotate, and the No. 1 connecting plate and the No. 2 connecting plate to rotate accordingly, thereby driving the slider to slide in opposite or separate directions within the connecting frame, thereby adjusting the distance between the two roller shafts to adapt to main shafts of different diameters, and realizing the support rotation of them, which significantly improves the repair efficiency, quality and adaptability, and is especially suitable for mass production and high-precision repair needs.

[0021] (2) The present invention uses a constant force grinding component. The hydraulic rod moves to push the connecting part to move, thereby causing the two adjusting plates and the moving plate to rotate relative to each other. At the same time, the moving plate moves closer to the center of the bottom of the moving frame. The grinding plate is driven by the moving plate to apply pressure to the surface of the main shaft. When the grinding plate contacts the surface of the main shaft, the grinding plate and the moving plate rotate relative to each other and rotate in the opposite direction to the main shaft. This applies a reverse force to the spring, causing the spring to deform elastically. This forms a stable contact force between the grinding plate and the main shaft, ensuring constant pressure during the grinding process and effectively avoiding surface damage or uneven grinding caused by fluctuations in contact force. Attached Figure Description

[0022] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the second perspective structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the third-view structure of the present invention;

[0025] Figure 4 This is a first-view structural diagram of the internal components of the support frame of the present invention;

[0026] Figure 5 This is a second-view structural diagram of the internal components of the support frame of the present invention;

[0027] Figure 6 yes Figure 3 A magnified structural diagram at point A;

[0028] Figure 7 yes Figure 4 A magnified structural diagram at point B;

[0029] Figure 8 This is a first-view structural schematic diagram of the constant force grinding component of the present invention;

[0030] Figure 9 This is a second-view structural schematic diagram of the constant force grinding component of the present invention.

[0031] Reference numerals: 11. Support frame; 12. Slide groove; 13. Rack; 14. Servo motor No. 1; 15. Lifting gear; 16. Connecting rod; 2. Rotary support assembly; 21. Connecting frame; 22. Slider; 23. Roller; 24. Rubber ring; 25. Rotating frame No. 1; 26. Connecting plate No. 1; 27. Main gear; 28. Gear No. 1; 29. ​​Gear No. 2; 210. Worm gear; 211. Drive motor; 212. Chain assembly; 213. Worm; 214. Servo motor No. 2; 215. Rotating frame No. 2; 216. Connecting plate No. 2; 3. Constant force grinding assembly; 31. Fixed frame; 32. Servo motor No. 3; 33. Moving frame; 34. Threaded rod; 35. Hydraulic rod; 36. Slide rod; 37. Moving plate; 38. Adjusting plate; 39. Connector; 310. Grinding plate; 311. Spring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] like Figures 1-3As shown in this embodiment, a spindle grinding device for generator set maintenance includes a support frame 11. The top of the support frame 11 has several rectangularly symmetrically arranged sliding grooves 12. The side of the sliding grooves 12 away from the inside of the support frame 11 is open. The support frame 11 located inside the sliding grooves 12 is slidably connected to a rack 13, and the support frame 11 limits the rack 13. If it is necessary to repair the spindles of multiple generator sets, the repair work can be completed efficiently in a short time by adjusting the clamping force and the setting of the roller 23, which improves the efficiency of the production line and reduces equipment downtime. At the same time, a lifting gear 15 is drivenly connected to one side of the rack 13. The lifting gear 15 is rotatably connected to the support frame 11, and two lifting gears 15 located on one side of the support frame 11 are fixedly connected to a connecting rod 16. The connecting rod 16 is rotatably connected to the support frame 11 through it.

[0034] like Figures 3-7 As shown, a rotating support assembly 2 is installed on the support frame 11 at the bottom of the constant force grinding assembly 3, covering a larger repair area of ​​the spindle and reducing repair time. The rotating support assembly 2 includes two rotating support components 2 fixedly connected to the inner wall of the support frame 11, and the interior of the rotating support assembly 2 is a hollow structure. Two sliders 22 are installed inside the rotating support assembly 2, which are slidably connected to the rotating support assembly 2, and the rotating support assembly 2 limits the movement of the sliders 22. A first rotating frame 25 and a second rotating frame 215 are rotatably connected to the center of the outer wall of the rotating support assembly 2 on both sides of the support frame 11, respectively. A second connecting plate 21 is rotatably connected to both ends of the second rotating frame 215. 6. The support spacing can be flexibly adjusted according to the diameter of the main shaft of different generator sets (usually ranging from several hundred millimeters to several meters), ensuring that "two-point symmetrical support" can be formed for main shafts of different lengths and diameters. Compared with traditional chuck clamping (which easily leads to concentrated force on the shaft end) or single roller support (poor stability), double roller support has a larger contact area and a more reasonable distribution of support points. It can disperse the weight of the main shaft and the centrifugal force during rotation, and avoid bending deformation of long shaft parts due to improper clamping. The other end of the second connecting plate 216 is rotatably connected to the slider 22 in the rotating support assembly 2. At the same time, the first rotating frame 25 and the second rotating frame 215 are fixedly connected to the worm gear 210 through the end away from the rotating support assembly 2.

[0035] like Figures 2-7As shown, a worm gear 213 is connected to the bottom of the worm wheel 210, and a chain assembly 212 is rotatably connected to the bottom of the support frame 11. The sprocket connecting shaft inside the chain assembly 212 is connected and fixed to the worm gear 213. A second servo motor 214 is mounted at the bottom of the support frame 11, with its output end rotatably connected to the support frame 11 and its end fixed to the worm gear 213. A drive motor 211 is also mounted on one side of the support frame 11. The output end is rotatably connected to the support frame 11 and the first rotating frame 25, and the drive motor 211 is fixedly connected to the main gear 27 through the end. The sprocket connecting shaft in the chain assembly 212 is rotatably connected to the support frame 11 through the end, and the other ends of the first rotating frame 25 and the second rotating frame 215 are rotatably connected to the inner wall of the support frame 11. The main gear 27 is rotatably connected inside the first rotating frame 25, and the first gear 28 is connected to both sides of the main gear 27 for transmission, which can handle different degrees of damage to the spindle surface (such as minor scratches). The grinding intensity can be flexibly adjusted (for scratches, local wear, and corrosion), while reducing the feed speed and pressure for lightly damaged areas and increasing efficiency for severely damaged areas. The first gear 28 is connected to the second gear 29 on the side away from the main gear 27, and the two sides of the second gear 29 are rotatably connected to the first connecting plate 26. At the same time, the other end of the first connecting plate 26 is rotatably connected to the first rotating frame 25. The connecting shaft of the first rotating frame 25 is connected through the first connecting plate 26, and the through end of the connecting shaft of the first rotating frame 25 is rotatably connected through the slider 22. Meanwhile, a roller 23 is rotatably connected between the two sliders 22 inside the support frame 11. Several rubber rings 24 arranged linearly and equally spaced are fixedly connected to the outer wall of the roller 23. After the main shaft is hoisted, simple positioning is all that is needed to complete the support, without the need for complicated tooling calibration. This is especially suitable for on-site maintenance of generator sets (where space is limited and hoisting of large equipment is inconvenient). The through end of the connecting shaft of the first rotating frame 25 is fixedly connected to the roller 23, and the two first gears 28 are rotatably connected to the first rotating frame 25.

[0036] like Figures 1-9As shown, two servo motors 14 are installed on one side of the support frame 11, and the output end of the servo motor 14 is rotatably connected to the support frame 11. Simultaneously, the through end of the servo motor 14 is fixedly connected to the connecting rod 16. The constant clamping force and uniform linear grinding process effectively improve the surface quality after repair. During grinding, the surface roughness will not change due to unstable clamping or uneven rotation. The repaired surface can achieve a high degree of smoothness, reducing minor surface defects such as scratches and unevenness, thereby enhancing the spindle's working performance and lifespan. A constant force grinding assembly 3 is fixedly connected to the end of the rack 13 away from the support frame 11. This assembly is used to maintain a constant contact pressure with the spindle, thereby improving repair efficiency. The constant force grinding assembly 3 includes a fixed frame 31 fixedly connected to the rack 13. A threaded rod 34 is rotatably connected inside the fixed frame 31. A movable frame 33 is threadedly connected through the threaded rod 34. Movable plates 37 are slidably connected through both ends of the movable frame 33. The movable plates 37 have a U-shaped structure. The end of the movable plate 37 away from the movable frame 33 is hollowed out. An adjusting plate 3 is rotatably connected inside the movable plate 37. 8. A connecting piece 39 is rotatably connected between the ends of the two adjusting plates 38 away from the moving plate 37. A hydraulic rod 35 is installed in the middle of the moving frame 33, and the telescopic end of the hydraulic rod 35 is slidably connected to the moving frame 33 through it, which can provide a constant clamping force to ensure that the grinding disc always maintains a certain contact pressure with the spindle, thereby achieving a uniform grinding effect and reducing possible material damage or surface scratches. The telescopic end of the hydraulic rod 35 is fixedly connected to the connecting piece 39. A grinding plate 310 is rotatably connected to the bottom of the moving plate 37, and the grinding plate 310 is L-shaped. One end of the grinding plate 310 is fixed. A spring 311 is fixedly connected to the fixed frame 31, and the other end of the spring 311 is fixedly connected to the moving plate 37. At the same time, a third servo motor 32 is installed on one side of the fixed frame 31. The output end of the third servo motor 32 is rotatably connected to the fixed frame 31, and the through end of the third servo motor 32 is fixedly connected to the threaded rod 34. By rotating the moving frame 33, the fixed frame 31 is moved axially to achieve adaptive fitting to spindles of different diameters. The middle part of the moving frame 33 is hollowed out, and the bottom two sides of the moving frame 33 are slidably connected to the sliding rods 36. At the same time, the two ends of the sliding rods 36 are fixedly connected to the fixed frame 31.

[0037] The working principle of this embodiment is as follows: Before maintenance, the two No. 1 servo motors 14 on one side of the support frame 11 are started to drive the connecting rod 16 to rotate, so that the lifting gears 15 on both sides of the support frame 11 rotate in opposite directions, thereby causing the rack 13 to move along the vertical direction of the support frame 11, which in turn drives the constant force grinding assembly 3 to move upward as a whole, so that the grinding plate 310 is away from the spindle surface, making it easier for the spindle to be inserted.

[0038] Then, the second servo motor 214 is started, driving the chain assembly 212 to transmit power, causing the two worm gears 213 to rotate simultaneously, thereby driving the worm wheels 210 on both sides to rotate synchronously, driving the first rotating frame 25 and the second rotating frame 215 to rotate, and the first connecting plate 26 and the second connecting plate 216 to rotate accordingly, thereby driving the slider 22 to slide in opposite or separate directions within the connecting frame 21, thereby adjusting the distance between the two roller shafts 23 to adapt to the support requirements of main shafts of different diameters.

[0039] When the first rotating frame 25 and the first connecting plate 26 rotate, the positions of the first gear 28 and the second gear 29 change synchronously, and the main gear 27 always maintains a meshing state with the first gear 28 and the second gear 29 to ensure a stable and reliable transmission process.

[0040] The spindle to be repaired is then placed on the roller 23 inside the support frame 11. The position is adjusted so that it is parallel to the roller 23. Then, the first servo motor 14 is started to run in reverse, driving the rack 13 to move down, so that the constant force grinding component 3 moves down to the surface of the spindle and contacts it. At this time, the drive motor 211 runs, driving the main gear 27 to rotate. Then, through the meshing transmission of the main gear 27 with the first gear 28 and the second gear 29, the roller 23 inside the support frame 11 is driven to rotate synchronously and in the same direction, thereby driving the spindle to rotate at a uniform speed.

[0041] At the same time, the hydraulic rod 35 moves to push the connecting piece 39 to move, which in turn causes the two adjusting plates 38 and the moving plate 37 to rotate relative to each other. Simultaneously, the moving plate 37 moves closer to the bottom center of the moving frame 33, and the grinding plate 310 applies pressure to the spindle surface under the action of the moving plate 37.

[0042] When the grinding plate 310 comes into contact with the spindle surface, the grinding plate 310 and the moving plate 37 rotate relative to each other, rotating in the opposite direction to the spindle. This rotation applies a reverse force to the spring 311, causing the spring 311 to undergo elastic deformation, thereby forming a stable contact force between the grinding plate 310 and the spindle.

[0043] Then, servo motor 32 operates, driving threaded rod 34 to rotate in both directions, which in turn drives moving frame 33 to reciprocate linearly along slide rod 36, causing grinding plate 310 to move evenly in the axial direction of the spindle, achieving continuous grinding over the entire length of the spindle. Due to the elastic compensation effect of spring 311, grinding plate 310 can adapt to minor unevenness on the spindle surface in real time, ensuring constant pressure and avoiding local over-grinding or poor contact.

[0044] When the No. 3 servo motor 32 drives the threaded rod 34 to reverse, the moving frame 33 moves in the opposite direction, and the grinding plate 310 returns synchronously, completing one grinding cycle.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A spindle grinding device for generator set maintenance, comprising a support frame (11), wherein the top of the support frame (11) is provided with a plurality of rectangularly symmetrically arranged sliding grooves (12), and the side of the sliding grooves (12) away from the interior of the support frame (11) is open, characterized in that: The support frame (11) located inside the slide groove (12) is slidably connected to a rack (13), and the support frame (11) limits the rack (13). At the same time, a lifting gear (15) is connected to one side of the rack (13). The lifting gear (15) is rotatably connected to the support frame (11), and two lifting gears (15) located on one side of the support frame (11) are fixedly connected to a connecting rod (16). At the same time, the connecting rod (16) is rotatably connected to the support frame (11). Two servo motors (14) are installed on one side of the support frame (11), and the output end of the servo motor (14) is rotatably connected to the support frame (11). At the same time, the through end of the servo motor (14) is fixedly connected to the connecting rod (16). A constant force grinding assembly (3) is fixedly connected between the ends of several racks (13) away from the support frame (11) to maintain a constant contact pressure with the spindle and improve the repair efficiency. The support frame (11) located at the bottom of the constant force grinding assembly (3) is equipped with a rotating support assembly (2), which covers a larger repair area of ​​the spindle and reduces repair time; The rotating support assembly (2) includes two rotating support assemblies (2) fixedly connected to the inner wall of the support frame (11), and the interior of the rotating support assembly (2) is a hollow structure. At the same time, two sliders (22) are provided inside the rotating support assembly (2). The sliders (22) are slidably connected to the rotating support assembly (2), and the rotating support assembly (2) limits the sliders (22). A first rotating frame (25) and a second rotating frame (215) are rotatably connected at the center of the outer wall of the rotating support assembly (2) on both sides of the support frame (11). The other end of the first rotating frame (25) and the second rotating frame (215) are rotatably connected to the inner wall of the support frame (11). A main gear (27) is rotatably connected inside the first rotating frame (25), and a first gear (28) is driven on both sides of the main gear (27). At the same time, the two first gears (28) are rotatably connected to the first rotating frame (25). The first gear (28) is connected to the second gear (29) on the side away from the main gear (27). The two sides of the second gear (29) are rotatably connected to the first connecting plate (26). At the same time, the other end of the first connecting plate (26) is rotatably connected to the first rotating frame (25). The connecting shaft of the first rotating frame (25) is connected through the first connecting plate (26). The through end of the connecting shaft of the first rotating frame (25) is rotatably connected through the slider (22). At the same time, a roller (23) is rotatably connected between the two sliders (22) inside the support frame (11). Several rubber rings (24) are fixedly connected to the outer wall of the roller (23) in a linear and equidistant manner. The through end of the connecting shaft of the first rotating frame (25) is fixedly connected to the roller (23). The second rotating frame (215) is rotatably connected to the second connecting plate (216) at both ends, and the other end of the second connecting plate (216) is rotatably connected to the slider (22) in the rotating support assembly (2). At the same time, the first rotating frame (25) and the second rotating frame (215) are fixedly connected to the end away from the rotating support assembly (2) by a worm gear (210). The bottom of the worm gear (210) is connected to a worm (213), and the bottom of the support frame (11) is rotatably connected to a chain assembly (212). The sprocket connecting shaft in the chain assembly (212) is rotatably connected to the support frame (11). The sprocket connecting shaft in the chain assembly (212) is connected and fixed to the worm (213) through end. At the same time, a second servo motor (214) is installed at the bottom of the support frame (11). The output end of the second servo motor (214) is rotatably connected to the support frame (11) through end, and the through end of the second servo motor (214) is connected and fixed to the worm (213). Meanwhile, a drive motor (211) is installed on one side of the support frame (11). The output end of the drive motor (211) is rotatably connected to the support frame (11) and the first rotating frame (25) through end, and the through end of the drive motor (211) is connected and fixed to the main gear (27).

2. The spindle grinding device for generator set maintenance according to claim 1, characterized in that, The constant force grinding assembly (3) includes a fixed frame (31) fixedly connected to the rack (13), and a threaded rod (34) is rotatably connected inside the fixed frame (31). The threaded rod (34) is threadedly connected to a movable frame (33). At the same time, a third servo motor (32) is installed on one side of the fixed frame (31). The output end of the third servo motor (32) is rotatably connected to the fixed frame (31), and the end of the third servo motor (32) is fixedly connected to the threaded rod (34). By rotating the movable frame (33), the fixed frame (31) is driven to move axially, so as to achieve adaptive fitting to spindles of different diameters. The movable frame (33) is hollowed out in the middle, and sliding rods (36) are slidably connected to both sides of the bottom of the movable frame (33). At the same time, the two ends of the sliding rods (36) are fixedly connected to the fixed frame (31).

3. The spindle grinding device for generator set maintenance according to claim 2, characterized in that, The movable frame (33) has movable plates (37) slidably connected through both ends, and the movable plates (37) are U-shaped. The end of the movable plates (37) away from the movable frame (33) is hollow. An adjustment plate (38) is rotatably connected inside the movable plates (37). A connector (39) is rotatably connected between the ends of the two adjustment plates (38) away from the movable plates (37). A hydraulic rod (35) is installed in the middle of the movable frame (33). The telescopic end of the hydraulic rod (35) is slidably connected through the movable frame (33). The telescopic end of the hydraulic rod (35) is connected and fixed to the connector (39). A grinding plate (310) is rotatably connected to the bottom of the movable plate (37), and the grinding plate (310) is L-shaped. A spring (311) is fixedly connected to one end of the grinding plate (310), and the other end of the spring (311) is fixedly connected to the movable plate (37).

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