Main shaft polishing device for maintenance of generator set

Abstract

The invention discloses a main shaft grinding device for generator set maintenance, and belongs to the technical field of main shaft grinding, the main shaft grinding device for generator set maintenance comprises a supporting frame, a plurality of sliding grooves which are symmetrically arranged in a rectangular shape are formed in the top of the supporting frame, and meanwhile the sides, away from the interior of the supporting frame, of the sliding grooves are arranged in an opening state; the supporting frame located in the sliding groove is slidably connected with a rack, the rack is limited by the supporting frame, meanwhile, one side of the rack is in transmission connection with a lifting gear, the lifting gear is rotationally connected with the supporting frame, and the two lifting gears located on one side of the supporting frame are fixedly connected with a connecting rod. And the connecting rod is rotationally connected with the supporting frame in a penetrating manner. By adopting the constant-force grinding assembly and the rotary supporting assembly, the grinding plate with the constant clamping force makes contact with the surface of the rotating main shaft, uniform grinding is achieved, excessive heat concentration can be effectively avoided, and hardening or cracking of the surface of the main shaft due to local high temperature is prevented.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of spindle polishing, and particularly relates to a spindle polishing device for maintenance of a generator set. BACKGROUND

[0002] The spindle of a generator set is one of the core components of the generator set, mainly responsible for supporting and connecting the rotor and other mechanical components, and bearing huge mechanical load. In the operation process of the generator set, the spindle drives the generator to work through rotation to generate electric energy. Since the generator set is operated under high load all the year round, the spindle is subjected to great mechanical stress, heat change and influence of external environment, and long-term use will cause the spindle to be worn, fatigued or even broken, thereby affecting the normal operation of the generator set. Therefore, the spindle needs to be repaired to restore its normal working state, thereby prolonging the service life of the generator set and avoiding high cost caused by frequent replacement of the spindle.

[0003] In the prior art, when the spindle is polished and repaired, the spindle of the generator set is usually clamped and rotated, and a laser polishing and repairing mode is combined. Although this can realize efficient surface repair, laser polishing is a high-energy-density process, which will generate significant heat on the surface of the spindle. Although the local thermal influence of laser polishing is small, when large-area repair is performed, the high temperature of the laser may cause the temperature of the surface of the spindle to rise sharply, thereby causing thermal expansion or surface hardness change of the material. Especially for the spindle made of some high-strength material, the temperature change may affect the mechanical properties and durability of the spindle, and even cause local annealing or deformation of the material during the repair process. SUMMARY

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

[0005] The technical scheme adopted to solve the above technical problem is as follows: a spindle polishing device for maintenance of a generator set, comprising a support frame, a plurality of rectangularly and symmetrically arranged sliding grooves are formed in the top of the support frame, and 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 in the sliding groove; the support frame limits the rack; a lifting gear is transmissionally connected to one side of the rack; the lifting gear is rotationally connected to the support frame; two connecting rods are fixedly connected to the two lifting gears on one side of the support frame; and the connecting rods are rotationally connected to the support frame. Two first servo motors are installed on one side of the support frame, the output end of the first servo motor is rotationally connected to the support frame, the penetration end of the first servo motor is fixedly connected to the connecting rod, a constant force polishing assembly is fixedly connected between the racks away from the one end of the support frame, which is used to maintain constant contact pressure with the spindle and improve repair efficiency. The rotating support assembly installed at the bottom of the constant force polishing assembly covers a larger repair area of the main shaft, reducing the repair time.

[0006] By the above technical scheme, the support spacing can be flexibly adjusted according to the diameter of the main shaft of different types of generator sets (usually from hundreds of millimeters to several meters), so that the main shafts of different lengths and diameters can be symmetrically supported by two points, and compared with the traditional chuck clamping (which is easy to cause stress concentration at the shaft end) or single roller support (which has poor stability), the double roller support has larger contact area and more reasonable support point distribution, so that the self-weight and centrifugal force of the main shaft during rotation can be dispersed, and the bending deformation of the long shaft part caused by improper clamping can be avoided.

[0007] Further, the rotating support assembly includes two rotating support assemblies fixedly connected to the inner wall of the support frame, and the rotating support assemblies are hollow structures, and two sliding blocks are arranged in the rotating support assemblies, the sliding blocks are slidingly connected to the rotating support assemblies, and the rotating support assemblies limit the sliding blocks, the outer wall centers of the rotating support assemblies located on both sides of the support frame are rotatably connected to a first rotating frame and a second rotating frame, the other ends of the first rotating frame and the second rotating frame are rotatably connected to the inner wall of the support frame, a main gear is rotatably connected to the inside of the first rotating frame, one gear is drivingly connected to the two sides of the main gear, and the two one gears are rotatably connected to the first rotating frame.

[0008] By the above technical scheme, a constant clamping force can be provided, so that the polishing disc can always maintain a certain contact pressure with the main shaft, thereby achieving uniform polishing effect and reducing possible material damage or surface scratches.

[0009] Further, the one gear is drivingly connected to a second gear away from the main gear, the two sides of the second gear are rotatably connected to a first connecting plate, the other end of the first connecting plate is rotatably connected to the first rotating frame, a first rotating frame connecting shaft penetrates the first connecting plate, the penetrating end of the first rotating frame connecting shaft is rotatably connected to the sliding block, a roller shaft is rotatably connected between the two sliding blocks located in the support frame, a plurality of rubber rings arranged at equal intervals in a linear manner are fixedly connected to the outer wall of the roller shaft, and the penetrating end of the first rotating frame connecting shaft is fixedly connected to the roller shaft.

[0010] Further, the second rotating frame is rotatably connected to a second connecting plate at both ends, the other end of the second connecting plate is rotatably connected to the sliding block in the rotating support assembly, a worm gear is fixedly connected to the end of the first rotating frame and the second rotating frame away from the rotating support assembly, a worm is drivingly connected to the bottom of the worm gear, a chain assembly is rotatably connected to the bottom of the support frame, and a sprocket shaft in the chain assembly is rotatably connected to the support frame.

[0011] Through the technical scheme, the constant clamping force and the uniform linear polishing process can effectively improve the surface quality after repair, and during the polishing process, the surface roughness will not change due to unstable clamping or uneven rotation, the surface after repair can reach a high smoothness, and the tiny surface defects such as scratches and uneven marks are reduced, thereby enhancing the working performance and service life of the main shaft.

[0012] Further, the sprocket connecting shaft in the chain assembly is fixedly connected with the worm, a second servo motor is installed at the bottom of the supporting frame, the output end of the second servo motor is rotatably connected with the supporting frame, the penetrating end of the second servo motor is fixedly connected with the worm, a driving motor is installed at one side of the supporting frame, the output end of the driving motor is rotatably connected with the supporting frame and the first rotating frame, and the penetrating end of the driving motor is fixedly connected with the main gear.

[0013] Through the technical scheme, the polishing intensity can be flexibly adjusted according to different damage degrees (such as slight scratches, local wear and tear, and rust) of the main shaft surface, the feed speed and the pressure are reduced for the light damage area, and the efficiency is improved for the serious damage area.

[0014] Further, the constant force polishing assembly comprises a fixed frame fixedly connected with the rack, a threaded rod rotatably connected in the fixed frame, a moving frame threadedly connected with the threaded rod, a third servo motor installed at one side of the fixed frame, the output end of the third servo motor rotatably connected with the fixed frame, and the penetrating end of the third servo motor fixedly connected with the threaded rod.

[0015] Through the technical scheme, after the main shaft is hoisted, it only needs to be simply positioned to complete the support, without complex tool calibration, and it is especially suitable for the scene of on-site maintenance of the generator set (limited space and inconvenient hoisting of large equipment).

[0016] Further, the moving plate is slidably connected at both ends of the moving frame, the moving plate is in a U-shaped structure, the inside of the moving plate away from the moving frame is in a hollow state, an adjusting plate is rotatably connected in the moving plate, a connecting piece is rotatably connected between the ends of the two adjusting plates away from the moving plate, a hydraulic rod is installed in the middle of the moving frame, the hydraulic rod is slidably connected with the moving frame at the telescopic end, the telescopic end of the hydraulic rod is fixedly connected with the connecting piece, a polishing plate is rotatably connected at the bottom of the moving plate, the polishing plate is in an L-shaped structure, a spring is fixedly connected at one end of the polishing plate, and the other end of the spring is fixedly connected with the moving plate.

[0017] By the technical scheme, if the main shafts of multiple generator sets need to be repaired, the clamping force and the roller shafts can be adjusted, the repair work can be efficiently completed in a short time, the efficiency of the production line is improved, and the equipment downtime is reduced.

[0018] The beneficial effects of the present application are as follows: (1) The present application adopts a rotating support assembly, a first servo motor, drives the connecting rod to rotate, makes the lifting gears on both sides of the support frame rotate oppositely, thereby moving the rack in the vertical direction of the support frame, and further drives the constant force polishing assembly to move upward as a whole, so that the polishing plate moves away from the surface of the main shaft, facilitating the placement of the main shaft, a second servo motor drives the chain assembly to transmit power, so that the two worms rotate simultaneously, thereby driving the two side worm gears to rotate synchronously, driving the first rotating frame and the second rotating frame to rotate, the first connecting plate and the second connecting plate rotate correspondingly, and further driving the sliding blocks to slide oppositely or divergently in the connecting frame, so as to adjust the distance between the two roller shafts to adapt to main shafts of different diameters, and realize the support and rotation of the main shafts, thereby significantly improving the repair efficiency, quality and adaptability, especially suitable for mass production and high-precision repair requirements.

[0019] (2) The present application adopts a constant force polishing assembly, a hydraulic rod moves the connecting piece, thereby driving the two adjusting plates and the moving plate to rotate relatively, and simultaneously driving the moving plate to move towards the center of the moving frame bottom, while the polishing plate is driven by the moving plate to press the surface of the main shaft synchronously, when the polishing plate contacts the surface of the main shaft, the polishing plate and the moving plate rotate relatively, and rotate reversely to the main shaft, thereby exerting a reverse force on the spring to make the spring elastically deform, so as to form a stable adhesion force between the polishing plate and the main shaft, ensuring the constant pressure during polishing, and effectively avoiding surface damage or uneven polishing caused by fluctuation of the contact force. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a first perspective view of the structure of the present application; Figure 2 is a second perspective view of the structure of the present application; Figure 3 is a third perspective view of the structure of the present application; Figure 4 is a first perspective view of the internal components of the support frame of the present application; Figure 5 is a second perspective view of the internal components of the support frame of the present application; Figure 6 is Figure 3 is an enlarged structure diagram of A of Figure 7 is an enlarged structure diagram of B of Figure 4 Figure 8 ​It is the first view structure schematic diagram of the constant force polishing assembly of the application; Figure 9 It is the second view structure schematic diagram of the constant force polishing assembly of the application.

[0021] Fig. 11, support frame; 12, sliding groove; 13, rack; 14, No. 1 servo motor; 15, lifting gear; 16, connecting rod; 2, rotary support assembly; 21, connecting frame; 22, sliding block; 23, roller shaft; 24, rubber ring; 25, No. 1 rotating frame; 26, No. 1 connecting plate; 27, main gear; 28, No. 1 gear; 29, No. 2 gear; 210, worm gear; 211, drive motor; 212, chain assembly; 213, worm; 214, No. 2 servo motor; 215, No. 2 rotating frame; 216, No. 2 connecting plate; 3, constant force polishing assembly; 31, fixed frame; 32, No. 3 servo motor; 33, moving frame; 34, threaded rod; 35, hydraulic rod; 36, sliding rod; 37, moving plate; 38, adjusting plate; 39, connecting piece; 310, polishing plate; 311, spring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the application more clear, the application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described here are only used to explain the application and not to limit the application.

[0023] As Figures 1-3 shown, the main shaft polishing device for generator set maintenance of the embodiment includes a support frame 11, and a plurality of rectangular symmetrically arranged sliding grooves 12 are formed in the top of the support frame 11, and the sliding grooves 12 are arranged in an open state away from the inside of the support frame 11, the support frame 11 located inside the sliding grooves 12 is slidingly connected with a rack 13, and the support frame 11 limits the rack 13, if it is necessary to repair the main shafts of a plurality of generator sets, the clamping force and the roller shaft 23 can be adjusted to efficiently complete the repair work in a short time, improve the efficiency of the production line, reduce the equipment downtime, and the rack 13 is drivingly connected with a lifting gear 15 on one side, the lifting gear 15 is rotatably connected with the support frame 11, and the connecting rod 16 is fixedly connected with the two lifting gears 15 located on one side of the support frame 11, and the connecting rod 16 is rotatably connected with the support frame 11.

[0024] As Figures 3-7The support frame 11 at the bottom of the constant force polishing assembly 3 is provided with the rotating support assembly 2, which covers a larger repair area of the main shaft and reduces the repair time. The rotating support assembly 2 includes two rotating support assemblies 2 fixedly connected with the inner wall of the support frame 11. The rotating support assembly 2 is provided with a hollow structure. The rotating support assembly 2 is provided with two sliding blocks 22. The sliding blocks 22 are slidingly connected with the rotating support assembly 2 and are limited by the rotating support assembly 2. The outer wall of the rotating support assembly 2 at both sides of the support frame 11 is rotatably connected with a first rotating frame 25 and a second rotating frame 215. The second rotating frame 215 is rotatably connected with a second connecting plate 216 at both ends. The support spacing can be flexibly adjusted according to the diameter of the main shaft of the generator set of different models (usually from several hundred millimeters to several meters). The main shafts of different lengths and diameters can be symmetrically supported by two points. Compared with the traditional chuck clamping (which easily causes stress concentration at the shaft end) or single-roller support (which has poor stability), the double-roller support has a larger contact area and a more reasonable support point distribution. The self-weight and centrifugal force of the main shaft during rotation can be dispersed. The bending deformation of the long shaft part caused by improper clamping is avoided. The other end of the second connecting plate 216 is rotatably connected with the sliding block 22 in the rotating support assembly 2. The first rotating frame 25 and the second rotating frame 215 are rotatably connected with a worm gear 210 at the end away from the rotating support assembly 2.

[0025] As Figures 2-7The bottom of the worm wheel 210 is drivingly connected with a worm 213, and the bottom of the support frame 11 is rotatably connected with a chain assembly 212, the sprocket connecting shaft in the chain assembly 212 is connected and fixed with the worm 213 at the penetrating end, at the same time, the 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 with the support frame 11, and the penetrating end of the second servo motor 214 is connected and fixed with the worm 213, at the same time, the driving motor 211 is installed on one side of the support frame 11, the output end of the driving motor 211 is rotatably connected with the support frame 11 and the first rotating frame 25, and the penetrating end of the driving motor 211 is connected and fixed with the main gear 27, the sprocket connecting shaft in the chain assembly 212 is rotatably connected with the support frame 11, and the other end of the first rotating frame 25 and the second rotating frame 215 is rotatably connected with the inner wall of the support frame 11, the main gear 27 is rotatably connected in the first rotating frame 25, and the main gear 27 is drivingly connected with the first gear 28 on both sides, the polishing intensity can be flexibly adjusted according to the different damage degrees (such as slight scratches, local wear and tear, rust) on the surface of the main shaft, the feeding speed and the pressure are reduced for the light damage area, and the efficiency is improved for the serious damage area, the second gear 29 is drivingly connected with the first gear 28 away from the main gear 27, the second gear 29 is rotatably connected with the first connecting plate 26 on both sides, at the same time, the other end of the first connecting plate 26 is rotatably connected with the first rotating frame 25, the connecting shaft of the first rotating frame 25 is connected with the first connecting plate 26, and the penetrating end of the connecting shaft of the first rotating frame 25 is rotatably connected with the sliding block 22, at the same time, the roller shaft 23 is rotatably connected between the two sliding blocks 22 in the support frame 11, a plurality of rubber rings 24 are fixedly connected to the outer wall of the roller shaft 23 in a linear and equidistant manner, after the main shaft is hoisted, the support can be completed only by simple positioning, without complex tool calibration, especially suitable for the scene of on-site maintenance of generator set (limited space, large equipment hoisting is not convenient), and the penetrating end of the connecting shaft of the first rotating frame 25 is connected and fixed with the roller shaft 23, at the same time, the two first gears 28 are rotatably connected with the first rotating frame 25.

[0026] As Figures 1-9As shown, the support frame 11 is provided with two first servo motors 14 on one side, and the output end of the first servo motor 14 is rotatably connected with the support frame 11, and the penetrating end of the first servo motor 14 is fixedly connected with the connecting rod 16. The constant clamping force and the uniform linear polishing process can effectively improve the surface quality after repair. During the polishing process, the surface roughness will not change due to unstable clamping or uneven rotation. The repaired surface can achieve high smoothness, reduce small surface defects such as scratches and uneven marks, thereby enhancing the working performance and service life of the main shaft. A plurality of racks 13 are fixedly connected between the ends away from the support frame 11, and a constant force polishing assembly 3 is arranged thereon, which is used to maintain constant contact pressure with the main shaft to improve the repair efficiency. The constant force polishing assembly 3 comprises a fixed frame 31 fixedly connected with the rack 13, a threaded rod 34 rotatably connected inside the fixed frame 31, and a moving frame 33 threadedly connected with the threaded rod 34. The moving frame 33 is slidably connected with a moving plate 37 at both ends, and the moving plate 37 is provided in a U-shaped structure. The moving plate 37 is provided in a hollow state at the end away from the moving frame 33. An adjusting plate 38 is rotatably connected inside the moving plate 37. The connecting piece 39 is rotatably connected between the ends away from the moving plate 37. The middle part of the moving frame 33 is provided with a hydraulic rod 35, and the telescopic end of the hydraulic rod 35 is slidably connected with the moving frame 33. The hydraulic rod 35 can provide constant clamping force to ensure that the polishing disc always maintains a certain contact pressure with the main shaft, thereby achieving uniform polishing effect and reducing possible material damage or surface scratches. The telescopic end of the hydraulic rod 35 is fixedly connected with the connecting piece 39. The moving plate 37 is rotatably connected with a polishing plate 310 at the bottom. The polishing plate 310 is provided in an L-shaped structure. The polishing plate 310 is fixedly connected with a spring 311 at one end. The other end of the spring 311 is fixedly connected with the moving plate 37. A third servo motor 32 is mounted on one side of the fixed frame 31. The output end of the third servo motor 32 is rotatably connected with the fixed frame 31. The penetrating end of the third servo motor 32 is fixedly connected with the threaded rod 34. The rotating moving frame 33 drives the fixed frame 31 to move along the axial direction, so as to realize the self-adaptive fitting of different diameter main shafts. The middle part of the moving frame 33 is provided in a hollow state. The moving frame 33 is slidably connected with a slide rod 36 at the bottom. The slide rod 36 is fixedly connected with the fixed frame 31 at both ends.

[0027] The working principle of the embodiment is as follows. Before maintenance, first start the two first servo motors 14 on one side of the support frame 11 to rotate the connecting rod 16, so that the lifting gears 15 on both sides of the support frame 11 rotate oppositely, thereby moving the racks 13 along the vertical direction of the support frame 11, and then moving the constant force polishing assembly 3 upward as a whole, so that the polishing plate 310 is away from the surface of the main shaft, and the main shaft is easily put in.

[0028] Then the second servo motor 214 is started, the chain assembly 212 is driven to transmit, the two worms 213 are simultaneously rotated, the two side worm gears 210 are synchronously rotated, the first rotating frame 25 and the second rotating frame 215 are rotated, the first connecting plate 26 and the second connecting plate 216 are correspondingly rotated, the sliding block 22 is slid in the connecting frame 21, the distance between the two roller shafts 23 is adjusted, and the support requirement of the main shaft with different diameters is adapted.

[0029] 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 synchronously change, the main gear 27 is always in meshing state with the first gear 28 and the second gear 29, and the transmission process is stable and reliable.

[0030] Then the main shaft to be repaired is placed on the roller shaft 23 in the support frame 11, the position is adjusted to be parallel to the roller shaft 23, the first servo motor 14 is started in reverse rotation, the rack 13 is driven to move downwards, the constant force polishing assembly 3 is moved downwards to the surface of the main shaft and is in contact with the surface, the driving motor 211 is operated, the main gear 27 is rotated, the roller shaft 23 in the support frame 11 is synchronously rotated and the rotating directions are consistent through the meshing transmission of the main gear 27, the first gear 28 and the second gear 29, and the main shaft is uniformly rotated.

[0031] At the same time, the hydraulic rod 35 is operated to drive the connecting piece 39 to move, the two adjusting plates 38 and the moving plate 37 are relatively rotated, the moving plate 37 is driven to the bottom center of the moving frame 33, and the polishing plate 310 is synchronously pressed to the surface of the main shaft under the driving of the moving plate 37.

[0032] When the polishing plate 310 is in contact with the surface of the main shaft, the polishing plate 310 and the moving plate 37 are relatively rotated, the polishing plate 310 rotates in the opposite direction of the main shaft, the spring 311 is subjected to the reverse force, the spring 311 is elastically deformed, and the stable fitting force is formed between the polishing plate 310 and the main shaft.

[0033] Then the third servo motor 32 is operated, the threaded rod 34 is reversely rotated, the moving frame 33 moves along the slide rod 36 in a reciprocating straight line, the polishing plate 310 moves uniformly in the axial direction of the main shaft, and the main shaft is continuously polished in the whole length range. Due to the elastic compensation effect of the spring 311, the polishing plate 310 can adapt to the slight unevenness of the surface of the main shaft in real time, the pressure is constant, and local over-polishing or poor contact is avoided.

[0034] When the third servo motor 32 drives the threaded rod 34 to reverse, the moving frame 33 moves reversely, the polishing plate 310 synchronously returns, and a polishing cycle is completed.

[0035] The above merely describes the preferred embodiments of the present application, but is not intended to limit the protection scope of the present application.

Claims

1. A main shaft polishing device for maintenance of a generator set, comprising a support frame (11), and a plurality of rectangularly symmetrically arranged sliding grooves (12) are formed on the top of the support frame (11), and the sliding grooves (12) are arranged in an open state away from the inner side of the support frame (11), characterized in that: The support frame (11) inside the chute (12) is slidingly connected with a rack (13), and the support frame (11) limits the rack (13), and the rack (13) is drivingly connected with a lifting gear (15) on one side, the lifting gear (15) is rotatably connected with the support frame (11), and the two lifting gears (15) on one side of the support frame (11) are fixedly connected with a connecting rod (16), and the connecting rod (16) is rotatably connected with the support frame (11); The support frame (11) is provided with two first servo motors (14) on one side, and the output end of the first servo motor (14) is rotatably connected with the support frame (11), and the penetrating end of the first servo motor (14) is fixedly connected with the connecting rod (16), and a plurality of constant force polishing assemblies (3) are fixedly connected between the racks (13) away from one end of the support frame (11), for maintaining constant contact pressure with the main shaft, improving the repair efficiency; The support frame (11) at the bottom of the constant force polishing assembly (3) is provided with a rotary support assembly (2), which covers a larger repair area of the main shaft, reducing the repair time.

2. The main shaft polishing device for maintenance of a generator set according to claim 1, characterized in that, The rotary support assembly (2) includes two rotary support assemblies (2) fixedly connected with the inner wall of the support frame (11), and the rotary support assembly (2) is provided as a hollow structure, and two sliding blocks (22) are arranged in the rotary support assembly (2), the sliding block (22) is slidingly connected with the rotary support assembly (2), and the rotary support assembly (2) limits the sliding block (22), the rotary support assembly (2) is rotatably connected with a first rotary frame (25) and a second rotary frame (215) at the center of the outer wall on both sides of the support frame (11), and the other end of the first rotary frame (25) and the second rotary frame (215) is rotatably connected with the inner wall of the support frame (11), the first rotary frame (25) is rotatably connected with a main gear (27) in the first rotary frame (25), and the main gear (27) is drivingly connected with a first gear (28) on both sides, and the two first gears (28) are rotatably connected with the first rotary frame (25).

3. The main shaft polishing device for maintenance of a generator set according to claim 2, characterized in that, The first gear (28) is drivingly connected with a second gear (29) away from the main gear (27), and the second gear (29) is rotatably connected with a first connecting plate (26) on both sides, and the other end of the first connecting plate (26) is rotatably connected with the first rotary frame (25), the first rotary frame (25) connecting shaft is connected with the first connecting plate (26), and the penetrating end of the first rotary frame (25) connecting shaft is rotatably connected with the sliding block (22), and the two sliding blocks (22) inside the support frame (11) are rotatably connected with a roller shaft (23), the roller shaft (23) is fixedly connected with a plurality of rubber rings (24) arranged linearly and equally spaced, and the penetrating end of the first rotary frame (25) connecting shaft is fixedly connected with the roller shaft (23).

4. The main shaft polishing device for maintenance of a generator set according to claim 2, characterized in that, Both ends of the second rotating frame (215) are rotatably connected with a second connecting plate (216), and the other end of the second connecting plate (216) is rotatably connected with the sliding block (22) in the rotary support assembly (2), and meanwhile, the first rotating frame (25) and the second rotating frame (215) are fixedly connected with the worm gear (210) at the end away from the rotary support assembly (2), the bottom of the worm gear (210) is drivingly connected with the worm (213), and the bottom of the supporting frame (11) is rotatably connected with the chain assembly (212), and the sprocket connecting shaft in the chain assembly (212) is rotatably connected with the supporting frame (11).

5. The main shaft polishing device for maintenance of a generator set according to claim 4, characterized in that, The sprocket connecting shaft in the chain assembly (212) is fixedly connected with the worm (213) at the penetrating end, and meanwhile, the bottom of the supporting frame (11) is provided with a second servo motor (214), the output end of the second servo motor (214) is rotatably connected with the supporting frame (11), and the penetrating end of the second servo motor (214) is fixedly connected with the worm (213), and meanwhile, the side of the supporting frame (11) is provided with a driving motor (211), the output end of the driving motor (211) is rotatably connected with the supporting frame (11) and the first rotating frame (25), and the penetrating end of the driving motor (211) is fixedly connected with the main gear (27).

6. The main shaft polishing device for maintenance of a generator set according to claim 1, characterized in that, The constant force polishing assembly (3) comprises a fixed frame (31) fixedly connected with the rack (13), and a threaded rod (34) rotatably connected in the fixed frame (31), and a moving frame (33) threadedly connected with the threaded rod (34), and meanwhile, the side of the fixed frame (31) is provided with a third servo motor (32), the output end of the third servo motor (32) is rotatably connected with the fixed frame (31), and the penetrating end of the third servo motor (32) is fixedly connected with the threaded rod (34), and the moving frame (33) drives the fixed frame (31) to move axially, so as to realize self-adaptive fitting of different diameter main shafts, the middle part of the moving frame (33) is provided in a hollow state, and the bottom of the moving frame (33) is slidably connected with a slide rod (36) at both sides, and meanwhile, the slide rod (36) is fixedly connected with the fixed frame (31) at both ends.

7. The main shaft polishing device for maintenance of a generator set according to claim 6, characterized in that, The moving frame (33) is slidably connected with a moving plate (37) at both ends, and the moving plate (37) is provided in a U-shaped structure, and meanwhile, the inside of the end of the moving plate (37) away from the moving frame (33) is provided in a hollow state, the inside of the moving plate (37) is rotatably connected with an adjusting plate (38), and the ends of the two adjusting plates (38) away from the moving plate (37) are rotatably connected with a connecting piece (39), and the middle part of the moving frame (33) is provided with a hydraulic rod (35), and meanwhile, the telescopic end of the hydraulic rod (35) is slidably connected with the moving frame (33), the telescopic end of the hydraulic rod (35) is fixedly connected with the connecting piece (39), the bottom of the moving plate (37) is rotatably connected with a polishing plate (310), and the polishing plate (310) is provided in an L-shaped structure, one end of the polishing plate (310) is fixedly connected with a spring (311), and the other end of the spring (311) is fixedly connected with the moving plate (37).

Images