A large wind turbine main shaft bearing cage

Abstract

The present invention discloses a large-scale wind turbine main shaft bearing retainer, which relates to the field of bearing technology, including a bearing retainer, a plurality of roller grooves evenly arranged on the side wall of the bearing retainer, and cylindrical rollers are adapted to be installed in the plurality of roller grooves. The bearing retainer is provided with an oil storage unit for storing lubricating oil, a buffer assembly for maintaining the stability of the cylindrical rollers, and a lubrication control assembly for timely replenishing the lubricating oil. The oil storage unit and the buffer assembly are both connected to the lubrication control assembly, and the plurality of cylindrical rollers are adapted to be installed with the buffer assembly. The present invention has a reasonable structure. When the external wind direction or wind force suddenly changes, the lubricating oil can be timely replenished between the cylindrical rollers and the buffer arc plate, so that the lubricating oil inside the bearing is more evenly distributed, the cylindrical rollers are more stable and smooth when rotating, and the bearing retainer is not easily damaged.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, and in particular to a large wind turbine main shaft bearing retainer. Background Art

[0002] A bearing retainer refers to a bearing part that partially wraps all or part of the rolling elements and moves with them. It is used to isolate the rolling elements and usually guides the rolling elements and retains them in the bearing. Large wind turbine main shafts require bearings during operation, and the bearing retainer is one of the main structures of the bearing.

[0003] At present, during the operation of large-scale wind turbine main shaft bearings, due to sudden changes in external wind direction and wind force, the internal bearing retainer is subjected to different degrees of impact and vibration under the condition of rotation, making the lubricating oil inside the bearing unevenly distributed, resulting in the part without lubricating oil cannot be replenished in time. Therefore, the present application proposes a large-scale wind turbine main shaft bearing retainer to meet the demand. Summary of the invention

[0004] The purpose of the present application is to provide a large wind turbine main shaft bearing retainer to solve the problems raised in the above-mentioned background technology. The present invention uses a buffer component to enable the cylindrical roller to replenish the lubricating oil into the lubrication control component under the action of external sudden force, so that the lubricating oil can be replenished to the circumference of the cylindrical roller in time, so that the lubricating oil inside the bearing is more evenly distributed, the cylindrical roller rotates more stably and smoothly, and the bearing retainer is not easily damaged.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a large-scale wind turbine main shaft bearing retainer, comprising a bearing retainer, a plurality of evenly arranged roller grooves opened on the side wall of the bearing retainer, and cylindrical rollers are adapted to be installed in the plurality of roller grooves, an oil storage unit for storing lubricating oil, a buffer assembly for maintaining the stability of the cylindrical rollers, and a lubrication control assembly for timely replenishing the lubricating oil are installed on the bearing retainer, and the plurality of cylindrical rollers are adapted to be installed with the buffer assembly; the buffer assembly is used to buffer the impact force exerted on the plurality of cylindrical rollers, the oil storage unit is used to provide the required lubricating oil to the lubrication control assembly, and the lubrication control assembly is used to perform oil spray lubrication on the plurality of cylindrical rollers.

[0006] By means of the above structure, through the buffer component, the cylindrical roller is subjected to the action of external sudden force, so that the oil storage unit replenishes the lubricating oil into the lubrication control component, and then the lubricating oil can be replenished from the lubrication control component to the circumference of the cylindrical roller in time, so that the lubricating oil inside the bearing is more evenly distributed, the cylindrical roller rotates more stably and smoothly, and the bearing retainer is not easily damaged.

[0007] Preferably, the buffer assembly includes a pair of buffer grooves respectively opened on two opposite inner walls of the multiple roller grooves, buffer springs are installed on the inner walls of the multiple pairs of buffer grooves, support rods are installed at one end of the multiple pairs of buffer springs, buffer arc plates are installed at one end of the multiple pairs of support rods, and the multiple pairs of buffer arc plates are connected to the lubrication control assembly.

[0008] Furthermore, through the buffer assembly, when the buffer arc plate is slightly displaced, the support connecting rod can drive the buffer arc plate to return to its original position under the action of the elastic deformation recovery force of the buffer spring, making the buffer arc plate more stable and the bearing retainer more stable.

[0009] Preferably, the two buffer arc plates located in the same roller groove are symmetrically arranged relative to the center of the roller groove, and the multiple cylindrical rollers are respectively adapted to be installed on the sides of the multiple pairs of buffer arc plates close to each other.

[0010] Furthermore, the buffer arc plate enables the cylindrical roller to rotate within a certain position, making the cylindrical roller more stable and smooth when rolling, making the bearing retainer more stable during use and less prone to damage, thereby extending the service life of the bearing retainer.

[0011] Preferably, buffer pads are installed on the inner walls of multiple pairs of the buffer grooves, buffer heads are installed on one end of multiple pairs of the support links, the multiple pairs of the buffer heads are respectively in contact with the multiple pairs of the buffer pads, and the multiple pairs of the support links are respectively slidably adapted on the inner walls of the multiple pairs of the buffer grooves.

[0012] Furthermore, when the buffer head is displaced by the buffer block, it can squeeze and push the buffer block, causing the buffer block to deform. Under the action of the elastic deformation recovery force of the buffer block, the buffer head can drive the supporting connecting rod to return to its original position, so that the bearing retainer is more stable when used.

[0013] Preferably, the lubrication control component includes oil holes respectively opened on the side where the multiple roller grooves are close to each other, fixed oil pipes are installed on the inner walls of the multiple oil holes, telescopic oil pipes are installed at both ends of the multiple fixed oil pipes, and movable oil pipes are installed at the ends of the multiple pairs of telescopic oil pipes that are away from each other, fixed holes are opened on the side walls of the multiple pairs of buffer arc plates, and the multiple pairs of movable oil pipes are respectively installed on the inner walls of the multiple pairs of fixed holes, and control units for controlling the inlet and outlet of lubricating oil are installed on the inner walls of the multiple fixed oil pipes and the corresponding inner walls of the multiple pairs of movable oil pipes, and the multiple fixed oil pipes are connected to the oil storage unit.

[0014] Furthermore, through the lubrication control component, when the buffer arc plate moves, the telescopic oil pipe is compressed. Under the action of the control unit, sufficient lubricating oil can be maintained in the telescopic oil pipe, so that when the external wind direction or wind force changes suddenly, the lubricating oil inside the bearing is distributed more evenly, making the bearing more stable and smooth when rotating, and preventing the bearing retainer from being damaged easily.

[0015] Preferably, the control unit includes two fixed ear plates installed on the inner wall of the fixed oil pipe and two fixed baffles symmetrically arranged with respect to the center of the fixed oil pipe, movable ear plates respectively installed on the inner walls of a pair of movable oil pipes and two movable baffles symmetrically arranged with respect to the center of the fixed oil pipe, oil suction springs are installed on the sides of the two fixed ear plates close to each other, oil suction valve balls are installed on the ends of the two oil suction springs close to each other, the two oil suction valve balls are respectively adapted to be installed on the inner walls of the two fixed baffles, oil outlet springs are installed on the sides of the two movable ear plates close to each other, oil outlet valve balls are installed on the sides of the two oil outlet springs close to each other, and the two oil outlet valve balls are respectively adapted to be installed on the inner walls of the two movable baffles.

[0016] Furthermore, through the control unit, when the external wind direction or wind force suddenly changes, the oil suction valve ball and the fixed baffle are tightly attached together, and the oil outlet valve ball and the movable baffle are separated, so that the lubricating oil can pass through the movable baffle and spray out from the movable oil pipe, so that the lubricating oil can quickly lubricate the bearing and make the bearing rotate more smoothly.

[0017] Preferably, the oil storage unit includes oil filling thread grooves opened on two opposite side walls of the bearing retainer, an annular oil chamber is opened on the side of the two oil filling thread grooves close to each other, a plurality of oil guide chambers are opened on the side walls of the two annular oil chambers, and two symmetrically arranged connecting holes are opened on the side walls of the plurality of fixed oil pipes, and the corresponding ends of the plurality of pairs of oil guide chambers close to each other are respectively connected to the plurality of pairs of connecting holes.

[0018] Furthermore, through the oil storage unit, when the lubricating oil inside the annular oil chamber is insufficient, the oil filling thread groove is rotated to the highest point, and the lubricating oil is added to the annular oil chamber through the oil filling thread groove. Under the action of gravity, the lubricating oil can fill the annular oil chamber, the oil guide chamber, and the fixed oil pipe, so that the bearing retainer can be used continuously, the bearing retainer is more stable when used, and the speed of personnel's maintenance of the bearing retainer is improved.

[0019] Preferably, sealing screws are adapted to be installed on the inner walls of the two oil filling thread grooves, and tightening grooves are provided at the ends of the two sealing screws that are away from each other.

[0020] Furthermore, by means of the sealing screw, lubricating oil can be added more easily inside the bearing retainer, the bearing retainer is more convenient to be repaired, and the bearing retainer can be used continuously.

[0021] Preferably, a plurality of evenly arranged connecting oil grooves are provided on the side walls of the two annular oil chambers, a lubrication groove is provided on two opposite inner walls of the plurality of roller grooves, a plurality of pairs of the lubrication grooves are respectively connected to a plurality of pairs of the connecting oil grooves, a plurality of pairs of the lubrication grooves are respectively provided with lubrication balls installed on their inner walls, and the plurality of pairs of the lubrication balls are respectively in contact with a plurality of the cylindrical rollers.

[0022] Furthermore, when the cylindrical roller rotates, the lubricating ball can be driven to rotate at the same time, so that the lubricating oil in the annular oil chamber flows into the lubricating groove through the connecting oil groove. With the rotation of the lubricating ball, the lubricating ball can rotate more smoothly inside the lubricating groove, and the cylindrical roller and the lubricating ball will not get stuck when contacting. The lubricating ball can better decompose the force exerted on the cylindrical roller, making the rotation of the cylindrical roller more stable and smooth.

[0023] In summary, the technical effects and advantages of this application are:

[0024] 1. The structure of the present invention is reasonable. When the main shaft of the wind turbine blade rotates, the main shaft bearing rotates, and the cylindrical roller rotates. When the external wind direction or wind force suddenly changes, the main shaft bearing is subjected to different degrees of impact and vibration, so that the cylindrical roller cannot rotate stably in the roller groove, and the cylindrical roller is slightly displaced, driving the buffer arc plate to drive the movable oil pipe to move, so that the telescopic oil pipe is compressed. Under the action of the control unit, the lubricating oil inside the telescopic oil pipe passes through the movable oil pipe and is replenished between the cylindrical roller and the buffer arc plate in time, so that the lubricating oil around the cylindrical roller is more evenly distributed, so that the cylindrical roller is more stable and smooth when rotating, and the bearing retainer is not easy to be damaged;

[0025] When the oil pump is turned on, the oil pump will be turned off, and the oil pressure in the oil pump will be increased, so that the oil pumping valve ball and the fixed baffle are in close contact, and the oil outlet valve ball and the movable baffle are separated, so that the lubricating oil in the oil pumping valve can be sprayed out from the movable oil pipe through the movable baffle, so that the lubricating oil can quickly lubricate the cylindrical roller, so that the cylindrical roller rotates more smoothly. When the cylindrical roller is restored to stability, the buffer arc plate is restored to its original position, and the movable oil pipe is restored to its original position at the same time, so that the oil pumping valve ball is stretched again to restore the original state, so that the internal pressure of the oil pumping valve is reduced, the oil outlet valve ball and the movable baffle are in close contact, and the oil suction valve ball is separated from the fixed baffle, so that the lubricating oil in the annular oil chamber can be sucked into the fixed oil pipe through the oil guide chamber and enter the oil pumping valve through the fixed baffle, so that the oil pumping valve ball is filled with lubricating oil again, so that when the cylindrical roller rolls unbalanced, the bearing holder can replenish the lubricating oil to the cylindrical roller in time, so that the bearing holder is more practical.

[0026] 3. In the present invention, when the cylindrical roller rotates unbalancedly, the buffer arc plate is squeezed and pushed, so that the supporting link slides in the buffer groove, the buffer spring is compressed, the buffer head contacts the buffer pad, and the buffer pad is deformed. Under the elastic deformation restoring force of the buffer spring and the buffer pad, the supporting link is restored to its original position, the buffer arc plate is restored to its original position, the cylindrical roller is restored to a stable rotation, the cylindrical roller rotates more smoothly in the roller groove, the cylindrical roller is not easily damaged, the bearing cage is subjected to a more uniform force, and the service life of the bearing cage is extended;

[0027] 4. In the present invention, when the cylindrical roller rotates, it can drive the lubricating ball to rotate at the same time, so that the lubricating oil in the annular oil chamber flows into the lubricating groove through the connecting oil groove. Under the rotation of the lubricating ball, the lubricating ball rotates more smoothly inside the lubricating groove, so that the cylindrical roller and the lubricating ball will not be stuck when they contact, so that the lubricating ball can better decompose the force on the cylindrical roller, so that the cylindrical roller can rotate more stably and smoothly;

[0028] 5. In the present invention, when the lubricating oil in the annular oil chamber is insufficient, the oil filling thread groove is rotated to the highest point, the sealing screws are unscrewed from the oil filling thread grooves, and the lubricating oil is added to the annular oil chamber through one of the oil filling thread grooves. Under the action of gravity, the lubricating oil can fill the annular oil chamber, the oil guide chamber, and the fixed oil pipe, and the sealing screw is tightened into the oil filling thread groove, so that the bearing retainer can be used continuously, the bearing retainer is more stable when used, and the maintenance speed of the bearing retainer by personnel is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of a large wind turbine main shaft bearing cage;

[0031] Figure 2 for Figure 1 The middle part is an enlarged schematic diagram of the three-dimensional structure;

[0032] Figure 3 It is a schematic diagram of the three-dimensional structure of a large wind turbine main shaft bearing cage cut from the first perspective;

[0033] Figure 4 for Figure 3 The middle part is an enlarged schematic diagram of the three-dimensional structure;

[0034] Figure 5 It is a schematic diagram of the three-dimensional structure of a large wind turbine main shaft bearing cage cut from a second perspective;

[0035] Figure 6 for Figure 5 The middle part is an enlarged schematic diagram of the three-dimensional structure;

[0036] Figure 7 It is a schematic diagram of the three-dimensional structure of a large wind turbine main shaft bearing cage cut from a third perspective;

[0037] Figure 8 for Figure 7 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0038] Fig. 9 for Figure 7 The middle part is an enlarged schematic diagram of the three-dimensional structure.

[0039] In the figure: 1. bearing retainer; 2. cylindrical roller; 3. buffer arc plate; 4. lubricating ball; 5. sealing screw; 6. roller groove; 7. annular oil chamber; 8. connecting oil groove; 9. oil guide chamber; 10. supporting connecting rod; 11. buffer head; 12. buffer pad; 13. buffer spring; 14. fixed oil pipe; 15. telescopic oil pipe; 16. movable oil pipe; 17. fixed ear plate; 18. oil suction spring; 19. oil suction valve ball; 20. fixed baffle; 21. lubrication groove; 22. buffer groove; 23. movable baffle; 24. oil outlet spring; 25. movable ear plate; 26. oil outlet valve ball; 27. oil filling threaded groove. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example: Reference Figure 1-9 A large wind turbine main shaft bearing retainer shown includes a bearing retainer 1, a plurality of evenly arranged roller grooves 6 opened on the side wall of the bearing retainer 1, and cylindrical rollers 2 are adapted to be installed in the plurality of roller grooves 6. An oil storage unit for storing lubricating oil, a buffer assembly for maintaining the stability of the cylindrical rollers 2, and a lubrication control assembly for timely replenishing the lubricating oil are installed on the bearing retainer 1. The oil storage unit and the buffer assembly are both connected to the lubrication control assembly, and the plurality of cylindrical rollers 2 are adapted to be installed with the buffer assembly; the buffer assembly is used to buffer the impact force exerted on the plurality of cylindrical rollers 2, the oil storage unit is used to provide the required lubricating oil to the lubrication control assembly, and the lubrication control assembly is used to spray lubricate the plurality of cylindrical rollers 2.

[0042] By setting the buffer component, when the cylindrical roller 2 is subjected to the external sudden force, the oil storage unit replenishes the lubricating oil into the lubrication control component, and then the lubricating oil can be replenished from the lubrication control component to the circumference of the cylindrical roller 2 in time, so that the lubricating oil inside the bearing is more evenly distributed, the cylindrical roller 2 rotates more stably and smoothly, and the bearing retainer 1 is not easily damaged.

[0043] As a preferred implementation of this embodiment, Figure 8 As shown, the buffer assembly includes a pair of buffer grooves 22 respectively opened on two opposite inner walls of multiple roller grooves 6, buffer springs 13 are installed on the inner walls of multiple pairs of buffer grooves 22, support connecting rods 10 are installed at one end of multiple pairs of buffer springs 13, buffer arc plates 3 are installed at one end of multiple pairs of support connecting rods 10, and multiple pairs of buffer arc plates 3 are connected to the lubrication control assembly.

[0044] By setting the buffer assembly, when the buffer arc plate 3 is slightly displaced, the support link 10 can drive the buffer arc plate 3 to return to its original position under the action of the elastic deformation recovery force of the buffer spring 13, so that the buffer arc plate 3 is more stable and the bearing retainer 1 has better stability.

[0045] In this embodiment, if Figure 4 As shown, two buffer arc plates 3 located in the same roller groove 6 are symmetrically arranged relative to the center of the roller groove 6, and multiple cylindrical rollers 2 are respectively adapted to be installed on the sides of multiple pairs of buffer arc plates 3 close to each other.

[0046] By setting the buffer arc plate 3, the cylindrical roller 2 can rotate within a certain position, making the cylindrical roller 2 more stable and smooth when rolling, making the bearing retainer 1 more stable when in use and less prone to damage, thereby extending the service life of the bearing retainer 1.

[0047] In this embodiment, if Figure 8 As shown, buffer pads 12 are installed on the inner walls of multiple pairs of buffer grooves 22, buffer heads 11 are installed on one end of multiple pairs of support links 10, multiple pairs of buffer heads 11 are respectively in contact with multiple pairs of buffer pads 12, and multiple pairs of support links 10 are respectively slidably adapted on the inner walls of multiple pairs of buffer grooves 22.

[0048] By setting the buffer block 12, when the buffer head 11 is displaced, it can squeeze and push the buffer block 12, causing the buffer block 12 to deform. Under the action of the elastic deformation recovery force of the buffer block 12, the buffer head 11 can drive the supporting connecting rod 10 to return to its original position, so that the bearing retainer 1 has better stability when in use.

[0049] In this embodiment, if Fig. 9 As shown, the lubrication control component includes oil holes respectively opened on the side of multiple roller grooves 6 close to each other, fixed oil pipes 14 are installed on the inner walls of the multiple oil holes, telescopic oil pipes 15 are installed at both ends of the multiple fixed oil pipes 14, and movable oil pipes 16 are installed at the ends of the multiple pairs of telescopic oil pipes 15 that are away from each other. Fixed holes are opened on the side walls of the multiple pairs of buffer arc plates 3, and the multiple pairs of movable oil pipes 16 are respectively installed on the inner walls of the multiple pairs of fixed holes. Control units for controlling the inlet and outlet of lubricating oil are installed on the inner walls of the multiple fixed oil pipes 14 and the inner walls of the corresponding multiple pairs of movable oil pipes 16, and the multiple fixed oil pipes 14 are connected to the oil storage unit.

[0050] Through the setting of the lubrication control component, when the buffer arc plate 3 moves, the telescopic oil pipe 15 is compressed. Under the action of the control unit, sufficient lubricating oil can be maintained in the telescopic oil pipe 15, so that when the external wind direction or wind force suddenly changes, the lubricating oil inside the bearing is more evenly distributed, the bearing rotates more stably and smoothly, and the bearing retainer 1 is not easily damaged.

[0051] In this embodiment, if Fig. 9As shown, the control unit includes two fixed ear plates 17 installed on the inner wall of the fixed oil pipe 14 and two fixed baffles 20 symmetrically arranged relative to the center of the fixed oil pipe 14, movable ear plates 25 respectively installed on the inner walls of a pair of movable oil pipes 16 and two movable baffles 23 symmetrically arranged relative to the center of the fixed oil pipe 14, the two fixed ear plates 17 are each installed with an oil suction spring 18 on one side close to each other, the two oil suction springs 18 are each installed with an oil suction valve ball 19 on one end close to each other, the two oil suction valve balls 19 are respectively adapted to be installed on the inner walls of the two fixed baffles 20, the two movable ear plates 25 are each installed with an oil outlet spring 24 on one side close to each other, the two oil outlet springs 24 are each installed with an oil outlet valve ball 26 on one side close to each other, and the two oil outlet valve balls 26 are respectively adapted to be installed on the inner walls of the two movable baffles 23.

[0052] Through the setting of the control unit, when the external wind direction or wind force suddenly changes, the oil suction valve ball 19 is tightly attached to the fixed baffle 20, and the oil outlet valve ball 26 is separated from the movable baffle 23, so that the lubricating oil can pass through the movable baffle 23 and spray out from the movable oil pipe 16, so that the lubricating oil can quickly lubricate the bearing and make the bearing rotate more smoothly.

[0053] In this embodiment, if Figure 6 As shown, the oil storage unit includes oil filling thread grooves 27 opened on two opposite side walls of the bearing retainer 1, an annular oil chamber 7 is opened on the side of the two oil filling thread grooves 27 close to each other, and multiple oil guide chambers 9 are opened on the side walls of the two annular oil chambers 7. Two symmetrically arranged connecting holes are opened on the side walls of multiple fixed oil pipes 14, and the corresponding ends of the multiple pairs of oil guide chambers 9 close to each other are respectively connected to the multiple pairs of connecting holes.

[0054] By setting the oil storage unit, when the lubricating oil in the annular oil chamber 7 is insufficient, the oil filling thread groove 27 is rotated to the highest point, and the lubricating oil is added to the annular oil chamber 7 through the oil filling thread groove 27. Under the action of gravity, the lubricating oil can fill the annular oil chamber 7, the oil guide chamber 9, and the fixed oil pipe 14, so that the bearing retainer 1 can be used continuously, the bearing retainer 1 is more stable when used, and the maintenance speed of the bearing retainer 1 by personnel is improved.

[0055] In this embodiment, if Figure 6 As shown, sealing screws 5 are adapted to be installed on the inner walls of the two oiling thread grooves 27, and a tightening groove is provided at one end of the two sealing screws 5 away from each other. By setting the sealing screws 5, it is easier to add lubricating oil to the inside of the bearing retainer 1, making the bearing retainer 1 easier to inspect and repair, and the bearing retainer 1 can be used continuously.

[0056] In this embodiment, if Figure 6As shown, a plurality of evenly arranged connecting oil grooves 8 are provided on the side walls of the two annular oil chambers 7, a lubrication groove 21 is provided on the two opposite inner walls of the plurality of roller grooves 6, and the plurality of pairs of lubrication grooves 21 are respectively connected to the plurality of pairs of connecting oil grooves 8, and lubrication balls 4 are adapted to be installed on the inner walls of the plurality of pairs of lubrication grooves 21, and the plurality of pairs of lubrication balls 4 are respectively in contact with the plurality of cylindrical rollers 2.

[0057] By setting the lubricating ball 4, when the cylindrical roller 2 rotates, it can drive the lubricating ball 4 to rotate at the same time, so that the lubricating oil in the annular oil chamber 7 flows into the lubricating groove 21 through the connecting oil groove 8. Under the rotation of the lubricating ball 4, the lubricating ball 4 can rotate more smoothly inside the lubricating groove 21, so that the cylindrical roller 2 and the lubricating ball 4 will not get stuck when contacting, so that the lubricating ball 4 can better decompose the force exerted on the cylindrical roller 2, so that the cylindrical roller 2 can rotate more stably and smoothly.

[0058] Working principle of the present invention: when the wind turbine blades rotate, the wind turbine main shaft rotates, and then the main shaft bearing rotates, and the cylindrical roller 2 rotates. When the external wind direction or wind force changes suddenly, the main shaft bearing is subjected to different degrees of impact and vibration, so that the cylindrical roller 2 cannot rotate stably in the roller groove 6, and the cylindrical roller 2 is slightly displaced, thereby driving the buffer arc plate 3 to displace, so that the supporting connecting rod 10 is displaced in the buffer groove 22, and the buffer head 11 is compressed, and then the buffer arc plate 3 drives the movable oil pipe 16 to move, so that the telescopic oil pipe 15 is compressed. Under the action of the control unit, the lubricating oil enters the telescopic oil pipe 15 from the fixed ear plate 17, and then the lubricating oil inside the telescopic oil pipe 15 passes through the movable oil pipe 16, so that the lubricating oil can be replenished between the cylindrical roller 2 and the buffer arc plate 3 in time, so that the lubricating oil on the peripheral side of the cylindrical roller 2 is more evenly distributed, so that the cylindrical roller 2 is more stable and smooth when rotating, and the bearing retainer 1 is not easy to be damaged.

[0059] Through the control unit, when the buffer arc plate 3 moves, the telescopic oil pipe 15 is compressed, and then under the action of the lubricating oil pressure in the telescopic oil pipe 15, the oil suction valve ball 19 and the fixed baffle 20 are tightly attached together, and the oil outlet valve ball 26 is separated from the movable baffle 23, so that the lubricating oil inside the telescopic oil pipe 15 can pass through the movable baffle 23 and then spray out from the movable oil pipe 16, so that the lubricating oil can quickly lubricate the cylindrical roller 2, so that the cylindrical roller 2 can rotate more smoothly. When the cylindrical roller 2 is restored to stability, the buffer arc plate 3 is restored to its original position, and the movable oil pipe 16 is restored at the same time To its original position, the telescopic oil pipe 15 is stretched to restore its original shape, so that the internal pressure of the telescopic oil pipe 15 is reduced, and the oil outlet valve ball 26 is tightly attached to the movable baffle 23, and the oil suction valve ball 19 is separated from the fixed baffle 20, so that the lubricating oil in the annular oil chamber 7 can pass through the oil guide chamber 9 and be sucked into the fixed oil pipe 14, and then enter the telescopic oil pipe 15 through the fixed baffle 20, so that the telescopic oil pipe 15 is filled with lubricating oil again, so that when the cylindrical roller 2 rolls unbalanced, the bearing retainer 1 can replenish the lubricating oil to the cylindrical roller 2 in time, making the bearing retainer 1 more practical.

[0060] When the cylindrical roller 2 rotates unbalancedly, it will squeeze and push the buffer arc plate 3, causing the support link 10 to slide in the buffer groove 22, thereby compressing the buffer spring 13, causing the buffer head 11 to contact the buffer pad 12, causing the buffer pad 12 to deform, and then under the action of the elastic deformation restoring force of the buffer spring 13 and the buffer pad 12, the support link 10 is restored to its original position, and then the buffer arc plate 3 is restored to its original position, so that the cylindrical roller 2 resumes stable rotation, and the cylindrical roller 2 rotates more smoothly in the roller groove 6, making the cylindrical roller 2 less likely to be damaged, thereby making the bearing retainer 1 more evenly stressed, and extending the service life of the bearing retainer 1.

[0061] When the wind turbine main shaft is rotating, the cylindrical roller 2 can also be rotated. Under the action of the lubricating ball 4, the cylindrical roller 2 can rotate more smoothly. When the cylindrical roller 2 rotates, the lubricating ball 4 can be driven to rotate at the same time, so that the lubricating oil in the annular oil chamber 7 flows into the lubricating groove 21 through the connecting oil groove 8. Under the rotation of the lubricating ball 4, the lubricating ball 4 can rotate more smoothly inside the lubricating groove 21, so that the cylindrical roller 2 and the lubricating ball 4 will not get stuck when in contact, so that the lubricating ball 4 can better decompose the force exerted on the cylindrical roller 2, so that the cylindrical roller 2 can rotate more stably and smoothly.

[0062] When the lubricating oil in the annular oil chamber 7 is insufficient, the two oil filling thread grooves 27 are rotated to the highest point, the two sealing screws 5 are respectively unscrewed from the two oil filling thread grooves 27, and the lubricating oil is added into the annular oil chamber 7 through one of the oil filling thread grooves 27. Under the action of gravity, the lubricating oil can fill the annular oil chamber 7, the oil guide chamber 9, and the fixed oil pipe 14, and then the sealing screw 5 is tightened into the oil filling thread groove 27, so that the bearing retainer 1 can be used continuously, the bearing retainer 1 is more stable when used, and the maintenance speed of the bearing retainer 1 is improved.

[0063] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large wind turbine main shaft bearing cage, comprising a bearing cage (1), a plurality of roller grooves (6) evenly arranged on the side wall of the bearing cage (1), and cylindrical rollers (2) each being adapted to be installed in the plurality of roller grooves (6), Features: The bearing retainer (1) is provided with an oil storage unit for storing lubricating oil, a buffer assembly for maintaining the stability of the cylindrical roller (2) and a lubrication control assembly for timely replenishing the lubricating oil, and the plurality of cylindrical rollers (2) are adapted to be installed with the buffer assembly; the buffer assembly is used to buffer the impact force exerted on the plurality of cylindrical rollers (2), the oil storage unit is used to provide the required lubricating oil to the lubrication control assembly, and the lubrication control assembly is used to spray lubricate the plurality of cylindrical rollers (2); the buffer assembly comprises a pair of buffer grooves (22) respectively provided on two opposite inner walls of the plurality of roller grooves (6), the inner walls of the plurality of pairs of buffer grooves (22) are provided with buffer springs (13), one end of the plurality of pairs of buffer springs (13) is provided with a support connecting rod (10), and one end of the plurality of pairs of support connecting rods (10) is provided with a support connecting rod (10). A buffer arc plate (3) is provided, and a plurality of pairs of the buffer arc plates (3) are connected to the lubrication control component; the lubrication control component includes oil holes respectively opened on the side close to each other of the plurality of roller grooves (6), fixed oil pipes (14) are installed on the inner walls of the plurality of oil holes, telescopic oil pipes (15) are installed at both ends of the plurality of fixed oil pipes (14), and movable oil pipes (16) are installed at the ends of the plurality of pairs of telescopic oil pipes (15) that are away from each other, fixed holes are opened on the side walls of the plurality of pairs of buffer arc plates (3), and the plurality of pairs of movable oil pipes (16) are respectively installed on the inner walls of the plurality of pairs of fixed holes, and control units for controlling the inlet and outlet of lubricating oil are installed on the inner walls of the plurality of fixed oil pipes (14) and the inner walls of the corresponding plurality of pairs of movable oil pipes (16), and the plurality of fixed oil pipes (14) are connected to the oil storage unit.

2. A large wind turbine main shaft bearing holder according to claim 1, Features: The two buffer arc plates (3) located in the same roller groove (6) are symmetrically arranged relative to the center of the roller groove (6), and the plurality of cylindrical rollers (2) are respectively adapted to be installed on the sides of the plurality of pairs of buffer arc plates (3) close to each other.

3. A large wind turbine main shaft bearing holder according to claim 1, Features: Buffer pads (12) are installed on the inner walls of the multiple pairs of buffer grooves (22), and buffer heads (11) are installed on one end of the multiple pairs of support connecting rods (10). The multiple pairs of buffer heads (11) are respectively in contact with the multiple pairs of buffer pads (12), and the multiple pairs of support connecting rods (10) are respectively slidably adapted on the inner walls of the multiple pairs of buffer grooves (22).

4. A large wind turbine main shaft bearing holder according to claim 1, Features: The control unit comprises two fixed ear plates (17) mounted on the inner wall of the fixed oil pipe (14) and two fixed baffle plates (20) symmetrically arranged relative to the center of the fixed oil pipe (14), movable ear plates (25) respectively mounted on the inner walls of a pair of movable oil pipes (16) and two movable baffle plates (23) symmetrically arranged relative to the center of the fixed oil pipe (14), and an oil suction spring (18) is mounted on the side of the two fixed ear plates (17) close to each other. An oil suction valve ball (19) is installed at one end of the oil suction spring (18) close to each other, and the two oil suction valve balls (19) are respectively adapted to be installed on the inner walls of the two fixed baffles (20). An oil outlet spring (24) is installed at one end of the two movable ear plates (25) close to each other, and an oil outlet valve ball (26) is installed at one end of the two oil outlet springs (24) close to each other, and the two oil outlet valve balls (26) are respectively adapted to be installed on the inner walls of the two movable baffles (23).

5. A large wind turbine main shaft bearing holder according to claim 1, Features: The oil storage unit comprises oil filling thread grooves (27) provided on two opposite side walls of the bearing retainer (1), an annular oil chamber (7) is provided on the side of the two oil filling thread grooves (27) close to each other, a plurality of oil guide chambers (9) are provided on the side walls of the two annular oil chambers (7), two symmetrically arranged connecting holes are provided on the side walls of the plurality of fixed oil pipes (14), and the corresponding ends of the plurality of pairs of oil guide chambers (9) close to each other are respectively connected to the plurality of pairs of connecting holes.

6. A large wind turbine main shaft bearing holder according to claim 5, Features: The inner walls of the two oil filling thread grooves (27) are both fitted with sealing screws (5), and the ends of the two sealing screws (5) that are away from each other are both provided with tightening grooves.

7. A large wind turbine main shaft bearing retainer according to claim 5, Features: A plurality of evenly arranged connecting oil grooves (8) are provided on the side walls of the two annular oil chambers (7), a lubrication groove (21) is provided on two opposite inner walls of the plurality of roller grooves (6), a plurality of pairs of the lubrication grooves (21) are respectively connected to a plurality of pairs of the connecting oil grooves (8), a plurality of pairs of the lubrication grooves (21) are fitted with lubrication balls (4) on their inner walls, and the plurality of pairs of the lubrication balls (4) are respectively in contact with a plurality of the cylindrical rollers (2).

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