Lubricating and maintaining device for bearing of wind generating set

Abstract

The invention relates to a wind generating set bearing lubrication maintenance device which comprises a first end cover and a second end cover which are arranged on the two sides of a bearing seat, a sealed machine room is formed among the first end cover, the second end cover, the bearing seat and a main shaft body, and a liquid spraying mechanism is arranged in the machine room. The liquid spraying mechanism comprises a liquid spraying ring plate arranged in the machine room and coaxially arranged on the main shaft body in a sleeving mode and a nozzle arranged on the liquid spraying ring plate, the main shaft body and the liquid spraying ring plate rotate relatively, and the machine room is provided with a liquid supply assembly; the liquid supply assembly comprises a piston box fixedly connected to the machine room, a movable plate slidably connected to the piston box, a piston rod fixedly connected to the movable plate and slidably arranged on the top wall of the piston box in a penetrating mode, and a one-way liquid inlet pipe communicating with an inner cavity of the piston box. The one-way liquid outlet pipe is communicated with an inner cavity of the piston box and communicated with the nozzle; and the linkage part is arranged between the main shaft body and the piston rod. The possibility that a lubricating blind area exists in the main bearing is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbine ancillary equipment, and in particular to a bearing lubrication and maintenance device for a wind turbine. Background Art

[0002] As a critical link in the wind turbine's transmission chain, the reliability and lifespan of a wind turbine's main bearing directly impact the stable operation of the entire unit. Poor lubrication can dramatically shorten the service life of the main bearing and easily lead to failure, resulting in high installation and replacement costs. If main bearing failure is not detected in time, it can lead to serious accidents such as blade drop or yaw failure, resulting in significant economic losses.

[0003] The commonly used lubrication maintenance method for existing wind turbines is to add lubricating medium to the main bearings. When the main bearings of the wind turbine are lubricated by oil bath, a certain amount of lubricating oil is added to the machine compartment so that the lower part of the main bearing is immersed in the lubricating liquid. However, when using oil bath lubrication, a lubrication blind spot is prone to appear on the upper part of the main bearing, resulting in the risk of dry friction, so further improvement is needed. Summary of the Invention

[0004] In order to reduce the possibility of lubrication blind spots in the main bearing, the present application provides a wind turbine bearing lubrication maintenance device.

[0005] The present application provides a wind turbine bearing lubrication and maintenance device that adopts the following technical solutions: A wind turbine bearing lubrication and maintenance device comprises a first end cover and a second end cover symmetrically arranged on both sides of the bearing seat, a main shaft body rotatably passing through the first end cover and the second end cover, a sealed machine chamber is formed between the first end cover, the second end cover, the bearing seat and the main shaft body, the top wall of the machine chamber has a liquid filling hole, the bottom wall of the machine chamber has a sewage hole, the machine chamber is provided with a plug for sealing the sewage hole, and the machine chamber is equipped with a liquid spraying mechanism, the liquid spraying mechanism comprises a liquid spraying ring plate built into the machine chamber and coaxially sleeved on the main shaft body, and a nozzle arranged on the liquid spraying ring plate to spray liquid on the main bearing, the main shaft body and the liquid spraying ring plate are relative to each other Rotation, multiple nozzles are provided and distributed around the axis of the spray ring plate, the machine chamber is provided with a liquid supply assembly for supplying liquid to the nozzles, the liquid supply assembly includes a piston box fixedly connected to the machine chamber, a movable plate slidingly connected to the piston box in the direction of approaching / moving away from the main shaft body, a piston rod fixedly connected to the movable plate and slidingly passed through the top wall of the piston box, a one-way liquid inlet pipe connected to the inner cavity of the piston box and connected to the lower part of the inner cavity of the machine chamber, a one-way liquid outlet pipe connected to the inner cavity of the piston box and connected to the nozzle, and a linkage component provided between the main shaft body and the piston rod, and the reciprocating motion of the piston rod is realized during the rotation of the main shaft body through the linkage component.

[0006] By adopting the above technical solution, during the rotation of the main shaft body, the piston rod is driven by the linkage component to perform reciprocating sliding motion. When the piston rod drives the movable plate to slide toward the direction close to the axis of the main shaft body, the piston chamber formed by the movable plate and the piston box increases, and the liquid enters the piston chamber through the one-way liquid inlet pipe. When the piston rod drives the movable plate to slide toward the direction away from the axis of the main shaft body, the movable plate squeezes the liquid in the piston chamber, thereby pushing the cleaning liquid from the one-way liquid outlet pipe to the nozzle for spraying. When the liquid is lubricating oil, the lubricating oil is repeatedly sucked in and squeezed out in the piston box, thereby performing a comprehensive oil spray lubrication operation on the main bearing, reducing the risk of dry friction caused by a lubrication blind spot on the upper part of the main bearing while reducing the amount of lubricating oil used.

[0007] Preferably, the linkage component includes a cam fixedly sleeved on the main shaft body and a reset member provided in the piston box to force the movable plate to slide and reset so that the end face of the piston rod abuts against the outer peripheral wall of the cam.

[0008] By adopting the above technical solution, during the rotation of the main shaft body, the non-circular profile of the cam and the cooperation of the reset member can push the piston rod to move back and forth in the direction close to or away from the main shaft body. This design uses the rotational kinetic energy of the main shaft itself to realize the automatic reciprocating motion of the piston rod. The suction and injection process of the liquid in the machine chamber can be completed without an additional power source, which simplifies the structure and reduces energy consumption.

[0009] Preferably, the upper end of the piston rod is fixedly connected to a limit plate outside the piston box, and the reset member is a spring sleeved on the piston rod, one end of the spring is fixedly connected to the outer wall of the piston box, and the other end of the spring is fixedly connected to the limit plate.

[0010] By adopting this technical solution, the upper end of the piston rod is fixedly connected to the limit plate, and the reset function is achieved by a spring mounted on the piston rod. After the main shaft rotates and the cam pushes the piston rod to move, the spring force automatically resets the piston rod. This design simplifies the reset structure and improves the reliability of the device.

[0011] Preferably, the one-way liquid outlet pipe is provided with a pressure sensor or a pressure gauge.

[0012] By adopting the above technical solution, a pressure sensor is provided in the one-way liquid outlet pipe, which can monitor the liquid pressure in the one-way liquid outlet pipe in real time, and helps to accurately grasp the pressure changes during the injection process. When the main bearing is worn after the unit has been running for a long time, and the liquid in the engine compartment contains more particulate impurities, the delivery pressure in the one-way liquid outlet pipe will increase. The data obtained by the pressure sensor can be used to replace the liquid in the engine compartment in time, providing data support for the safe operation of the entire lubrication maintenance device. When the pressure value detected by the pressure sensor is higher than the preset range, it means that the lubricating oil may contain more metal particulate impurities and the lubricating oil is severely worn. The lubricating oil can be replaced in time based on the data obtained by the pressure sensor.

[0013] Preferably, the one-way liquid outlet pipe is provided with a refrigerator for cooling the medium flowing into the one-way liquid outlet pipe.

[0014] By adopting the above technical solution, the rotation of the main bearing will generate heat, thereby causing the temperature of the lubricating medium in the machine room to rise. When the piston rod drives the movable plate to slide toward the axis of the main shaft body, the piston cavity increases, and the liquid enters the piston cavity through the one-way liquid inlet pipe. When the piston rod drives the movable plate to slide toward the axis away from the main shaft body, the medium is cooled by the refrigerator and then ejected from the nozzle, reducing the possibility of deterioration of the lubricating medium.

[0015] Preferably, the liquid spraying mechanism also includes a fixed ring plate fixedly connected to the inner wall of the machine chamber and coaxially sleeved on the main shaft body, the liquid spraying ring plate is coaxially rotatably connected to the fixed ring plate, the fixed ring plate and the liquid spraying ring plate both have a liquid guide cavity and are connected to each other, the nozzle is connected to the liquid guide cavity, the one-way liquid outlet pipe is connected to the liquid guide cavity of the fixed ring plate, and the main shaft body is provided with a driving component for driving the liquid spraying ring plate to rotate.

[0016] By adopting the above technical solution, a combination of a fixed ring plate and a liquid spray ring plate is added, and a drive assembly is used to rotate the liquid spray ring plate relative to the main shaft body. This design allows the nozzle to rotate around the main shaft body while spraying cleaning liquid, achieving more uniform and comprehensive cleaning coverage, effectively improving cleaning efficiency and quality.

[0017] Preferably, the drive assembly includes a transmission outer ring gear coaxially fixedly mounted on the main shaft body, a transmission inner ring gear coaxially fixedly inserted into the inner wall of the spray ring plate, and a transmission gear rotatably connected to the fixed ring plate and located between the transmission outer ring gear and the transmission inner ring gear, the transmission gear is engaged with the transmission outer ring gear, and the transmission gear is engaged with the transmission inner ring gear.

[0018] By adopting this technical solution, the rotation of the main shaft body, through the cooperation of the transmission outer ring gear and transmission gear, drives the synchronous rotation of the transmission inner ring gear and the liquid spray ring plate, thereby achieving relative rotation of the liquid spray ring plate and the main shaft body. This allows the nozzle to spray at different positions relative to the main bearing, improving the coverage and uniformity of the nozzle spray. Furthermore, the rotation of the liquid spray ring plate is driven by the main shaft body's own rotational power, eliminating the need for an additional power source, simplifying the structure and reducing energy consumption.

[0019] Preferably, the top wall of the bearing seat is penetrated by a maintenance hole connected to the inner cavity, the bottom wall of the engine compartment has a sewage hole, the engine compartment is provided with a plug for sealing the sewage hole, and the bearing seat is provided with a medium injection mechanism externally connected to the maintenance hole.

[0020] By adopting the above technical solution, after the waste medium is discharged through the drain hole, new medium is injected into the machine chamber through the external medium injection mechanism.

[0021] Preferably, the medium injection mechanism includes a medium inlet main pipe plugged into the maintenance hole, a medium storage barrel outside the machine compartment, and a medium guide branch pipe connected to the medium storage barrel and the medium inlet main pipe, the medium guide branch pipe is connected to the medium inlet main pipe, and the medium guide branch pipe is provided with a delivery pump.

[0022] By adopting the above technical solution, the medium storage barrel is connected to the medium inlet main pipe using a medium guide branch pipe, and a delivery pump is provided on the medium guide branch pipe, so that the delivery volume and speed of the medium can be accurately controlled, avoiding the over- or under-filling problems that may be caused by traditional manual filling methods.

[0023] Preferably, the medium injection mechanism is provided in two groups, wherein one group of the medium injection mechanism is used for injecting lubricating medium, and the other group of the medium injection mechanism is used for injecting cleaning fluid.

[0024] By adopting the above technical solution, when the internal parts of the unit are worn and the engine compartment contains a large amount of metal particle impurities, the old lubricating medium is first discharged, and then the cleaning fluid is added to the engine compartment through the medium injection mechanism. The cleaning fluid is repeatedly sucked in and squeezed out in the piston cavity to achieve multiple circulation flushing of the cleaning fluid, thereby improving the utilization rate of the cleaning fluid and improving the cleaning effect. After cleaning, the sewage can be discharged through the drain hole. After cleaning, the lubricating medium is added to the engine compartment through another set of medium injection mechanisms.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. As the main shaft rotates, the piston rod is driven to slide back and forth via a linkage component. When the piston rod drives the movable plate to slide toward the main shaft axis, the piston chamber formed by the movable plate and the piston box expands, and liquid enters the piston chamber through the one-way liquid inlet pipe. When the piston rod drives the movable plate to slide away from the main shaft axis, the movable plate squeezes the liquid in the piston chamber, pushing the cleaning liquid out of the one-way liquid outlet pipe to the nozzle for spraying. If the liquid is lubricating oil, the lubricating oil is repeatedly sucked in and squeezed out of the piston box, thereby performing a comprehensive oil spray lubrication operation on the main bearing. This reduces the amount of lubricating oil used and reduces the risk of dry friction caused by lubrication blind spots on the upper part of the main bearing. 2. A pressure sensor is installed on the one-way liquid outlet pipe to monitor the liquid pressure in the one-way liquid outlet pipe in real time, which helps to accurately grasp the pressure changes during the injection process. When the main bearing wears out after the unit has been running for a long time, the liquid in the engine compartment contains a large amount of particulate impurities, which will increase the delivery pressure in the one-way liquid outlet pipe. The data obtained by the pressure sensor can be used to replace the liquid in the engine compartment in a timely manner, providing data support for the safe operation of the entire lubrication maintenance device. When the pressure value detected by the pressure sensor is higher than the preset range, it means that the lubricating oil may contain a large amount of metal particulate impurities and the lubricating oil is severely worn. The data obtained by the pressure sensor can be used to replace the lubricating oil in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a schematic diagram of the overall structure of a bearing lubrication and maintenance device for a wind turbine generator set.

[0027] Figure 2 This is a schematic diagram of the internal structure of the cabin.

[0028] Figure 3 It is a structural diagram of the drive component.

[0029] Figure 4 It is a structural diagram of the liquid supply component.

[0030] Figure 5 It is a structural diagram of the refrigeration pipe.

[0031] Explanation of the accompanying symbols: 10. Bearing seat; 101. Maintenance hole; 20. Main bearing; 30. Spindle body; 1. First end cover; 12. Drain hole; 13. Bracket; 2. Second end cover; 3. Spray mechanism; 31. Fixed ring plate; 32. Spray ring plate; 33. Nozzle; 4. Drive assembly; 41. Transmission outer ring gear; 42. Transmission inner ring gear; 43. Transmission gear; 5. Liquid supply assembly; 51. Piston box; 52. Movable plate; 53. Piston rod; 531. Limiting plate; 54. One-way liquid inlet pipe; 55. One-way liquid outlet pipe; 56. Linkage component; 561. Cam; 562. Spring; 57. Refrigeration pipe; 58. Cooling chamber; 6. Medium injection mechanism; 61. Medium inlet main pipe; 62. Medium storage barrel; 63. Medium guide branch pipe; 64. Air compressor; 65. Gas injection branch pipe; 66. Delivery pump. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] Example 1: The present application discloses a bearing lubrication and maintenance device for a wind turbine generator set. Figure 1 、 Figure 2 , including a first end cover 1 and a second end cover 2 symmetrically fixedly connected to both sides of the bearing seat 10. The first end cover 1 and the second end cover 2 have the same structure. In this embodiment, the first end cover 1 is used as an example for explanation. The first end cover 1 has a mounting hole, and the main shaft body 30 is rotatably inserted into the mounting hole.

[0034] A sealed machine chamber is formed between the first end cover 1, the second end cover 2, the bearing seat 10 and the main shaft body 30. A maintenance hole 101 connected to the lubrication cavity of the main bearing 20 is opened through the top wall of the bearing seat 10. A sewage hole 12 connected to the machine chamber is opened vertically through the bottom wall of the first end cover 1. The machine chamber is detachably connected to a plug for sealing the sewage hole 12 and the maintenance hole 101.

[0035] Reference Figure 2 、 Figure 3The engine compartment houses a liquid spray mechanism 3, which includes a fixed ring plate 31 fixedly connected to the engine compartment inner wall and coaxially sleeved on the main shaft body 30; a liquid spray ring plate 32 coaxially rotatably connected to the fixed ring plate 31 and coaxially sleeved on the main shaft body 30; and nozzles 33 fixedly connected to the liquid spray ring plate 32 for spraying liquid onto the main bearing 20. The main shaft body 30 and the liquid spray ring plate 32 rotate relative to each other. The fixed ring plate 31 and the liquid spray ring plate 32 each have a liquid guide cavity and are interconnected. The nozzles 33 are connected to the liquid guide cavity. Multiple nozzles 33 are provided and distributed around the axis of the liquid spray ring plate 32. The main shaft body 30 is provided with a driving assembly 4 for driving the liquid spraying ring plate 32 to rotate. The driving assembly 4 includes a transmission outer ring gear 41 coaxially fixedly sleeved on the main shaft body 30, a transmission inner ring gear 42 coaxially fixedly inserted into the inner wall of the liquid spraying ring plate 32, and a transmission gear 43 rotatably connected to the fixed ring plate 31 and located between the transmission outer ring gear 41 and the transmission inner ring gear 42. The transmission gear 43 is engaged with the transmission outer ring gear 41, and the transmission gear 43 is engaged with the transmission inner ring gear 42.

[0036] Reference Figure 3 、 Figure 4 A bracket 13 is fixedly connected to the lower portion of the outer wall of the first end cover 1, and the bracket 13 is provided with a liquid supply assembly 5 for supplying liquid to the fixed ring plate 31. The liquid supply assembly 5 includes a piston box 51 fixedly connected to the bracket 13 and located below the main shaft body 30, a movable plate 52 slidably connected to the inner cavity of the piston box 51 in the direction of approaching / moving away from the main shaft body 30, a piston rod 53 fixedly connected to the movable plate 52 and slidably penetrated through the top wall of the piston box 51, a one-way liquid inlet pipe 54 connected to the inner cavity of the piston box 51 and connected to the lower part of the inner cavity of the machine chamber, a one-way liquid outlet pipe 55 connected to the inner cavity of the piston box 51 and connected to the liquid guide cavity of the fixed ring plate 31, and a linkage component 56 arranged between the main shaft body 30 and the piston rod 53. A piston chamber is formed between the movable plate 52 and the bottom wall of the piston box 51. The piston rod 53 is located below the main shaft body 30. The one-way liquid inlet pipe 54 and the one-way liquid outlet pipe 55 are both connected to the lower part of the side wall of the piston chamber. The one-way liquid inlet pipe 54 and the one-way liquid outlet pipe 55 are both equipped with one-way valves. The one-way liquid outlet pipe 55 is provided with a pressure sensor or pressure gauge externally placed in the machine compartment.

[0037] The linkage component 56 includes a cam 561 fixedly mounted on the spindle body 30 and external to the machine chamber, and a reset member disposed within the piston housing 51 to force the movable plate 52 to slide and reset, causing the end surface of the piston rod 53 to abut against the outer wall of the cam 561. In this embodiment, the upper end of the piston rod 53 is fixedly connected to a stop plate 531 located between the piston housing 51 and the spindle body 30. The reset member is a spring 562 mounted on the piston rod 53, one end of which is fixedly connected to the outer wall of the piston housing 51, and the other end of which is fixedly connected to the stop plate 531.

[0038] Reference Figure 2The bearing seat 10 is provided with a medium injection mechanism 6 externally connected to the maintenance hole 101. The medium injection mechanism 6 includes a medium inlet main pipe 61 inserted into the maintenance hole 101, a medium storage barrel 62 externally located in the engine compartment, a medium guide branch pipe 63 connected to the medium storage barrel 62 and the medium inlet main pipe 61, an air compressor 64 externally located in the engine compartment, and an air injection branch pipe 65 connected between the air compressor 64 and the medium inlet main pipe 61. The medium guide branch pipe 63 is connected to the medium inlet main pipe 61 and is provided with a delivery pump 66. In this embodiment, the medium inlet main pipe 61, the medium guide branch pipe 63, and the air injection branch pipe 65 are connected by a three-way valve. The medium injection mechanism 6 is provided with two groups, one of which stores a lubricating medium (in this embodiment, the lubricating medium is lubricating oil) in one medium storage barrel 62, and the other stores a cleaning fluid in the other medium storage barrel 62.

[0039] The implementation principle of the wind turbine bearing lubrication maintenance device in the embodiment of the present application is as follows: Fill the engine compartment with lubricating medium: before the medium inlet main pipe 61 is inserted into the maintenance hole 101, first start the delivery pump 66 to extract the lubricating oil in the medium storage barrel 62, and the lubricating oil is discharged from the medium guide branch pipe 63 and the medium inlet main pipe 61 in turn, thereby taking out the old lubricating oil remaining in the medium guide branch pipe 63 and the medium inlet main pipe 61. Then stop the delivery pump 66 to clean the inner walls of the medium guide branch pipe 63 and the medium inlet main pipe 61. Then insert the medium inlet main pipe 61 into the maintenance hole 101 to add lubricating oil, so that the lubricating oil covers 1 / 3 of the height of the main shaft body 30 to achieve oil bath lubrication of the main bearing 20, so that the lubricating oil is immersed in the one-way liquid inlet pipe 54.

[0040] During the rotation of the main shaft body 30, on the one hand, the cooperation between the transmission outer ring gear 41 and the transmission gear 43 drives the transmission inner ring gear 42 and the liquid spraying ring plate 32 to rotate synchronously, thereby achieving relative rotation of the liquid spraying ring plate 32 and the main shaft body 30, and realizing the switching of different positions of the nozzle 33 relative to the main bearing 20. On the other hand, the non-circular profile of the cam 561 and the cooperation of the spring 562 are used to push the piston rod 53 to move back and forth. When the piston rod 53 drives the movable plate 52 to slide toward the axis of the main shaft body 30, the piston cavity increases, and lubricating oil enters the piston cavity through the one-way liquid inlet pipe 54. When the piston rod 53 drives the movable plate 52 to slide away from the axis of the main shaft body 30, the movable plate 52 squeezes the lubricating oil in the piston cavity, thereby pushing the lubricating oil through the one-way liquid outlet pipe 55 to the nozzle 33 for spraying, thereby performing a comprehensive oil spraying lubrication operation on the main bearing 20. On the other hand, while reducing the amount of lubricating oil, the risk of dry friction caused by the formation of a lubrication blind spot on the upper part of the main bearing 20 is reduced.

[0041] In addition, the one-way liquid outlet pipe 55 is provided with a pressure sensor or a pressure gauge, which can monitor the liquid pressure in the one-way liquid outlet pipe 55 in real time, which helps to accurately grasp the pressure changes during the injection process. When the main bearing 20 is worn after the unit has been running for a long time, so that the liquid in the engine compartment contains more particulate impurities, the delivery pressure in the one-way liquid outlet pipe 55 will increase. The data obtained by the pressure sensor can be used to replace the liquid in the engine compartment in time, providing data support for the safe operation of the entire lubrication maintenance device. When the pressure value detected by the pressure sensor is higher than the preset range, it means that the lubricating oil may contain more metal particulate impurities and the lubricating oil is severely worn. The lubricating oil can be replaced in time based on the data obtained by the pressure sensor.

[0042] When the internal parts of the unit are worn, resulting in a large amount of metal particle impurities in the engine compartment, the old lubricating medium is first discharged, and then cleaning fluid is added to the engine compartment through the medium injection mechanism 6. During the rotation of the main shaft body 30, the cleaning fluid is repeatedly sucked in and squeezed out of the piston cavity and sprayed out from the nozzle 33 to clean the main bearing 20. The multiple cycles of cleaning fluid reduce cleaning fluid waste and improve cleaning fluid utilization. After cleaning, the wastewater can be discharged through the drain hole 12. When the cleaning fluid contains a large number of particulate impurities, the delivery pressure in the one-way liquid outlet pipe 55 will increase, and the cleaning fluid can be replaced in a timely manner based on the data obtained by the pressure sensor.

[0043] After cleaning is completed, the high-pressure gas provided by the air compressor 64 is used to introduce gas into the maintenance hole 101 through the gas injection branch pipe 65, so as to effectively blow and clean the residual cleaning liquid inside the main bearing 20. After the blowing is completed, the three-way valve is switched and the delivery pump 66 is started to inject lubricating oil into the maintenance hole 101 through the medium guide branch pipe 63 and the medium inlet main pipe 61 in turn, so that the lubricating oil flows into the inside of the main bearing 20.

[0044] Example 2: The difference from Example 1 is that, referring to Figure 5 The one-way liquid outlet pipe 55 is provided with a cooler for cooling the medium flowing into the one-way liquid outlet pipe 55. In this embodiment, the cooler is a cooling tube 57 sheathed within the one-way liquid outlet pipe 55. A cooling chamber 58 is defined between the cooling tube 57 and the one-way liquid outlet pipe 55 and is filled with cooling water. The rotation of the main bearing 20 generates heat, which causes the temperature of the lubricating medium within the engine compartment to increase. When the piston rod 53 drives the movable plate 52 to slide toward the axis of the main shaft body 30, the piston chamber expands, and liquid enters the piston chamber through the one-way liquid inlet pipe 54. When the piston rod 53 drives the movable plate 52 to slide away from the axis of the main shaft body 30, the medium is cooled by the cooler and ejected from the nozzle 33, reducing the possibility of deterioration of the lubricating medium.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A wind turbine bearing lubrication and maintenance device, characterized by: The invention comprises a first end cover (1) and a second end cover (2) symmetrically arranged on both sides of a bearing seat (10); a main shaft body (30) is rotatably arranged through the first end cover (1) and the second end cover (2); a sealed machine chamber is formed between the first end cover (1), the second end cover (2), the bearing seat (10) and the main shaft body (30); a liquid spraying mechanism (3) is built into the machine chamber; the liquid spraying mechanism (3) comprises a liquid spraying ring plate (32) built into the machine chamber and coaxially sleeved on the main shaft body (30); and a nozzle (33) arranged on the liquid spraying ring plate (32) for performing a liquid spraying operation on the main bearing (20); the main shaft body (30) and the liquid spraying ring plate (32) rotate relative to each other; a plurality of nozzles (33) are provided and distributed around the axis of the liquid spraying ring plate (32); and the machine chamber is provided with a nozzle ( The liquid supply assembly (5) comprises a piston box (51) fixedly connected to the machine chamber, a movable plate (52) connected to the piston box (51) and slidingly arranged in a direction close to / away from the main shaft body (30), a piston rod (53) fixedly connected to the movable plate (52) and slidingly arranged on the top wall of the piston box (51), a one-way liquid inlet pipe (54) connected to the inner cavity of the piston box (51) and connected to the lower part of the inner cavity of the machine chamber, a one-way liquid outlet pipe (55) connected to the inner cavity of the piston box (51) and connected to the nozzle (33), and a linkage component (56) arranged between the main shaft body (30) and the piston rod (53), and the linkage component (56) is used to realize the reciprocating motion of the piston rod (53) during the rotation of the main shaft body (30).

2. A wind turbine bearing lubrication and maintenance device according to claim 1, characterized in that: The linkage component (56) includes a cam (561) fixedly mounted on the main shaft body (30) and a reset member arranged on the piston box (51) to force the movable plate (52) to slide and reset so that the end face of the piston rod (53) abuts against the outer peripheral wall of the cam (561).

3. A wind turbine bearing lubrication and maintenance device according to claim 2, characterized in that: The upper end of the piston rod (53) is fixedly connected to a limit plate (531) externally disposed on the piston box (51); the reset member is a spring (562) sleeved on the piston rod (53); one end of the spring (562) is fixedly connected to the outer wall of the piston box (51), and the other end of the spring (562) is fixedly connected to the limit plate (531).

4. The wind turbine generator bearing lubrication and maintenance device according to claim 2, characterized in that: The one-way liquid outlet pipe (55) is provided with a pressure sensor or a pressure gauge.

5. The wind turbine generator bearing lubrication and maintenance device according to claim 1, characterized in that: The one-way liquid outlet pipe (55) is provided with a refrigerator for cooling the medium flowing into the one-way liquid outlet pipe (55).

6. The wind turbine generator bearing lubrication and maintenance device according to claim 1, characterized in that: The liquid spraying mechanism (3) further comprises a fixed ring plate (31) fixedly connected to the inner wall of the machine chamber and coaxially sleeved on the main shaft body (30); the liquid spraying ring plate (32) is coaxially rotatably connected to the fixed ring plate (31); the fixed ring plate (31) and the liquid spraying ring plate (32) both have a liquid guide cavity and are interconnected; the nozzle (33) is connected to the liquid guide cavity; the one-way liquid outlet pipe (55) is connected to the liquid guide cavity of the fixed ring plate (31); and the main shaft body (30) is provided with a driving assembly (4) for driving the liquid spraying ring plate (32) to rotate.

7. A wind turbine bearing lubrication and maintenance device according to claim 6, characterized in that: The driving assembly (4) comprises a transmission outer ring gear (41) coaxially fixedly sleeved on the main shaft body (30), a transmission inner ring gear (42) coaxially fixedly inserted into the inner wall of the liquid spraying ring plate (32), and a transmission gear (43) rotatably connected to the fixed ring plate (31) and located between the transmission outer ring gear (41) and the transmission inner ring gear (42), wherein the transmission gear (43) is meshed with the transmission outer ring gear (41), and the transmission gear (43) is meshed with the transmission inner ring gear (42).

8. The wind turbine generator bearing lubrication and maintenance device according to claim 1, characterized in that: The top wall of the bearing seat (10) is provided with a maintenance hole (101) connected to the inner cavity, the bottom wall of the engine compartment has a drainage hole (12), the engine compartment is provided with a plug for sealing the drainage hole (12), and the bearing seat (10) is provided with a medium injection mechanism (6) externally connected to the maintenance hole (101).

9. The wind turbine generator bearing lubrication and maintenance device according to claim 8, characterized in that: The medium injection mechanism (6) comprises a medium inlet main pipe (61) plugged into the maintenance hole (101), a medium storage barrel (62) externally arranged in the machine compartment, and a medium guide branch pipe (63) connected to the medium storage barrel (62) and the medium inlet main pipe (61), wherein the medium guide branch pipe (63) is connected to the medium inlet main pipe (61), and the medium guide branch pipe (63) is provided with a delivery pump (66).

10. The wind turbine generator bearing lubrication and maintenance device according to claim 9, characterized in that: The medium injection mechanism (6) is provided in two groups, wherein one group of the medium injection mechanism (6) is used for injecting lubricating medium, and the other group of the medium injection mechanism (6) is used for injecting cleaning fluid.

Images