A dynamic lubrication roller bearing structure and method

Abstract

The present invention discloses a roller bearing structure with dynamic lubrication, which relates to the technical field of bearing structures, and includes: a bearing inner ring, a bearing outer ring, a bearing roller, a disc cover, and a dynamic oil replenishing mechanism. The dynamic oil replenishing mechanism collects excess grease injected into the bearing, and after the bearing consumes grease due to long-term operation, the stress generated by poor lubrication or other forces pushes the stress block of the dynamic oil replenishing mechanism, so that the stress block moves to push the sliding lubrication block to slide, and then the convex block of the sliding lubrication block pushes and squeezes the grease in the oil storage cavity, so that the grease enters the outer cavity, and the bearing inner ring, the bearing outer ring and the bearing roller are lubricated passively or actively. By passively or actively lubricating the bearing inner ring, the bearing outer ring and the bearing roller during operation, insufficient grease is avoided at the contact surface between the upper end of the bearing roller and the bearing inner ring and the bearing outer ring, resulting in poor lubrication.

Description

Technical Field

[0001] The invention relates to the technical field of bearing structures, and in particular to a dynamic lubricating roller bearing structure. Background Art

[0002] Tapered roller bearings are able to support large axial forces and can tolerate large radial forces. Therefore, these bearings are used in large machinery, such as wind turbines. Due to the size of tapered roller bearings used in such machinery, ensuring optimal lubrication of the bearings is a challenging task.

[0003] In large bearing assemblies with rotating outer rings, there are challenges in ensuring complete grease replacement and collecting excess grease. Internally, arrangements are known in which lubricating grease enters from the center of the inner ring, is guided through a cavity between the inner and outer rings, and is collected from the outer ring. For example, Chinese patents such as CN103453011B disclose a tapered roller bearing arrangement for a direct-drive generator for a wind turbine, such as Figure 1 As shown, grease is supplied into the cavity 60 via the grease inlet channel 50; and the grease is guided through the cavity 60 to the inlet openings 70a, 70a' of the grease outlet channels 70, 70'. Thus, the grease is pumped toward the inlet openings 70a, 70a' of the grease outlet channels by means of the movement of the rollers 10, 10' and, if present, also by means of the movement of the cage, and the grease then reaches the outlet openings 70b, 70b' of the grease outlet channels 70, 70' from the inlet openings 70a, 70a' of the grease outlet channels. At the grease outlet openings 70b, 70b', the grease can be collected by a grease cup, a pipe, a hose or a similar grease collection mechanism.

[0004] In the above-mentioned prior art solution, since the rollers 10 and 10' are in an inclined state, if the grease in the cavity 60 is insufficient, the roller will not be able to smoothly guide the grease at the lower position of the roller to the higher position of the roller (the pumping effect of the roller is limited). At the same time, the grease at the higher position of the roller is also more likely to gather at the lower position of the roller under the factor of gravity, resulting in insufficient lubrication effect at the higher position of the roller, affecting the operation of the tapered roller bearing. Summary of the invention

[0005] One of the purposes of the present invention is to solve the problem in the prior art that when there is insufficient grease in a tapered roller bearing, the grease cannot be evenly distributed and gathers at the lower position of the roller, thus affecting the lubrication effect.

[0006] A second object of the present invention is to provide a dynamic lubrication method.

[0007] To achieve one of the above purposes, the present invention adopts the following technical solution: a dynamic lubrication roller bearing structure, which includes: a bearing inner ring, a bearing outer ring, a bearing roller, a disc cover, and a dynamic oil replenishing mechanism.

[0008] An oil inlet hole is provided on the side of the inner ring of the bearing. The outer ring of the bearing is sleeved on the inner ring of the bearing, and an inner cavity is formed between the outer ring of the bearing and the inner ring of the bearing at the middle end, and the inner cavity is connected to the oil inlet hole. The outer ring of the bearing surrounds the inner ring of the bearing, and the inner ring of the bearing has a rotation function relative to the outer ring of the bearing. The bearing roller is arranged between the inner ring of the bearing and the outer ring of the bearing to form a rolling arrangement.

[0009] The disc cover is connected to the bearing outer ring, and the disc cover, the bearing outer ring and the bearing inner ring form an outer cavity at an outer position.

[0010] The dynamic oil replenishing mechanism is installed in the flange of the disc cover, and the dynamic oil replenishing mechanism is slidably connected with the inner ring of the bearing. The dynamic oil replenishing mechanism comprises: an oil flow channel, an oil replenishing cylinder, a sliding oil pushing block, and a stress block.

[0011] The oil flow passage is connected to the oil discharge hole on the outer ring side of the bearing and connected to the outer cavity, and an elastic sealing block inclined inward is provided at the outlet of the oil replenishment cylinder. The sliding oil push block is slidably sleeved outside the oil replenishment cylinder, and a convex block with a hole extends inward from the sliding oil push block, which is tightly attached to the side wall of the oil storage chamber in the oil replenishment cylinder, and the oil storage chamber is connected to the outlet of the oil replenishment cylinder and the oil flow passage. The stress block is transmission-connected to the sliding oil push block, and the stress block is arranged at the connection position between the dynamic oil replenishment mechanism and the inner ring of the bearing.

[0012] In the above technical scheme, when the embodiment of the present invention is used, grease is injected into the inner cavity through the oil inlet hole on the inner ring side of the bearing, and then the grease increased in the inner cavity is guided to the outer cavity through the inner cavity, and the excess grease is effectively discharged from the oil discharge hole on the outer cavity side, and the grease discharged from the oil discharge hole is collected through the flow oil channel of the dynamic oil replenishing mechanism, so that the grease enters the oil storage chamber of the oil replenishing cylinder through the flow oil channel. When the bearing consumes grease after working for a long time, resulting in insufficient grease on the contact surface between the upper end of the bearing roller and the inner ring of the bearing and the outer ring of the bearing, resulting in poor lubrication, the vibration generated by the poor lubrication causes the inner ring of the bearing to touch the stress block of the dynamic oil replenishing mechanism, so that the stress block moves to push the sliding lubrication block to slide, and then the convex block of the sliding lubrication block pushes and squeezes the grease in the oil storage chamber, so that the grease pushes the elastic sealing block at the front end of the oil replenishing cylinder, so that the grease enters the outer cavity to lubricate the inner ring, outer ring and bearing roller of the bearing.

[0013] Further, in an embodiment of the present invention, the inner cavity is located on one side of the bearing roller, and the outer cavity is located on the other side of the bearing roller.

[0014] Furthermore, in an embodiment of the present invention, a mounting opening is provided on the flange side of the disk cover, and the sealing ring is installed on the mounting opening. The sealing ring is used to seal the gap between the bearing inner ring and the bearing outer ring to prevent grease from leaking from the outer cavity.

[0015] Furthermore, in an embodiment of the present invention, the disc cover has an oil extraction channel, which is communicated with the oil circulation channel, and a filter layer for filtering impurities is provided in the oil circulation channel.

[0016] Further, in an embodiment of the present invention, a retaining frame is installed between the bearing outer ring and the bearing inner ring, and the bearing rollers are retained by the retaining frame in positions circumferentially spaced apart at equal intervals.

[0017] Furthermore, in an embodiment of the present invention, the bearing outer ring and the disk cover are integrally formed or the bearing outer ring and the disk cover are two identical or different ring-shaped structures.

[0018] Furthermore, in an embodiment of the present invention, the inner ring of the bearing is connected to a main shaft of the wind generator.

[0019] Furthermore, in an embodiment of the present invention, the dynamic oil replenishing mechanism further comprises a lever, which is movably installed in the dynamic oil replenishing mechanism, and the two ends of the lever are respectively movably connected to the stress block and the sliding oil pushing block, and can also be slidably connected. The stress block is provided with a reset spring.

[0020] Furthermore, in an embodiment of the present invention, a convex point is provided at the sliding connection between the inner ring of the bearing and the dynamic oil replenishing mechanism. Through the action of the convex point provided at the sliding connection between the inner ring of the bearing and the dynamic oil replenishing mechanism, each rotation of the inner ring of the bearing triggers one or more movements of the stress block, so that the movement of the stress block pushes the sliding lubrication block to slide, and then the convex block of the sliding lubrication block pushes and squeezes the grease in the oil storage chamber, so that the grease pushes away the elastic sealing block at the front end of the oil replenishing cylinder, so that the grease enters the outer cavity, actively lubricates the inner ring of the bearing, the outer ring of the bearing and the bearing roller, and avoids to the greatest extent the insufficient amount of grease on the contact surface between the upper end of the bearing roller and the inner ring of the bearing and the outer ring of the bearing, resulting in poor lubrication.

[0021] Furthermore, in an embodiment of the present invention, a transmission mechanism with a rotation function is provided on the inner side surface of the bearing outer ring, the transmission mechanism is in close contact with the bearing roller, and a cam is provided on the side end of the transmission mechanism.

[0022] The inner side surface of the bearing outer ring is also provided with an inwardly concave notch, and a movable shell is slidably arranged at the notch. The movable shell is connected with a pressure elastic part, and an end of the movable shell facing the inner cavity is provided with an elastic membrane.

[0023] When the bearing consumes grease after working for a long time, resulting in insufficient grease on the contact surface between the bearing roller and the bearing outer ring, the bearing roller pushes the transmission mechanism to rotate through the damping force, so that the cam repeatedly pushes the movable housing to slide. Under the action of the pressure spring, the movable housing causes the elastic membrane to agitate the air in the inner cavity when it moves, thereby accelerating the air flow in the inner cavity, thereby allowing the grease to flow upward to a certain extent, thereby improving the lubrication effect of the bearing.

[0024] The beneficial effects of the present invention are:

[0025] The present invention collects excess grease injected into the bearing through a dynamic oil replenishing mechanism, and after the bearing has worked for a long time and consumed the grease, the stress generated by poor lubrication or other forces pushes the stress block of the dynamic oil replenishing mechanism, so that the stress block moves to push the sliding lubrication block to slide, and then the convex block of the sliding lubrication block pushes and squeezes the grease in the oil storage cavity, so that the grease enters the outer cavity, and the bearing inner ring, the bearing outer ring and the bearing roller are lubricated passively or actively. By passively or actively lubricating the bearing inner ring, the bearing outer ring and the bearing roller during the working process, insufficient grease at the contact surface between the upper end of the bearing roller and the bearing inner ring and the bearing outer ring is avoided, resulting in poor lubrication.

[0026] To achieve the second objective, the present invention adopts the following technical solution: a dynamic lubrication method, which includes the following steps:

[0027] Grease is injected into the inner cavity through the oil inlet hole on the inner ring side of the bearing, and then the grease that increases in the inner cavity is guided to the outer cavity through the inner cavity, and the excess grease is effectively discharged from the oil drain hole on the outer cavity side;

[0028] The grease discharged from the oil drain hole is collected through the oil flow passage of the dynamic oil replenishing mechanism, so that the grease enters the oil storage chamber of the oil replenishing cylinder through the oil flow passage;

[0029] When the bearing consumes grease after working for a long time, the contact surface between the upper end of the bearing roller and the inner ring and outer ring of the bearing is insufficient, resulting in poor lubrication. The poor lubrication generates vibrations that cause the inner ring of the bearing to trigger the stress block of the dynamic oil replenishing mechanism, causing the stress block to move and push the sliding lubrication block to slide, thereby causing the convex block of the sliding lubrication block to push and squeeze the grease in the oil storage chamber, causing the grease to push away the elastic sealing block at the front end of the oil replenishing cylinder, allowing the grease to enter the outer cavity and lubricate the inner ring, outer ring and bearing rollers of the bearing.

[0030] Furthermore, in an embodiment of the present invention, when the bearing is working, the convex points arranged at the sliding connection between the inner ring of the bearing and the dynamic oil replenishing mechanism act so that each rotation of the inner ring of the bearing triggers one or more movements of the stress block, thereby actively lubricating the inner ring of the bearing, the outer ring of the bearing and the bearing roller, thereby minimizing the possibility of insufficient grease on the contact surface between the upper end of the bearing roller and the inner ring of the bearing and the outer ring of the bearing, resulting in poor lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a schematic diagram of the structure of a roller bearing with dynamic lubrication according to an embodiment of the present invention.

[0032] Figure 2 It is a schematic cross-sectional view of a roller bearing structure with dynamic lubrication according to an embodiment of the present invention.

[0033] Figure 3 for Figure 2 A partial enlarged view of .

[0034] Figure 4 It is a structural schematic diagram of the dynamic oil replenishing mechanism according to an embodiment of the present invention.

[0035] Figure 5 for Figure 4 A partial enlarged view of B.

[0036] Figure 6 It is a schematic diagram of the local detailed motion effect of the dynamic oil replenishing mechanism according to an embodiment of the present invention.

[0037] Figure 7 for Figure 2 A partial enlarged view of C.

[0038] Figure 8 The figure is a schematic diagram of the motion effect of the transmission mechanism and the agitation mechanism according to the embodiment of the present invention.

[0039] In the attached figure

[0040] 10. Bearing inner ring 11. Oil inlet hole 12. Inner cavity

[0041] 13. Oil drain hole 20, bearing outer ring 30, bearing roller

[0042] 40, plate cover 41, outer cavity 42, flange

[0043] 421, oil pumping channel 43, installation port

[0044] 50. Dynamic oil replenishment mechanism 51. Oil flow channel 52. Oil replenishment cylinder

[0045] 521, elastic sealing block 53, sliding oil pushing block 54, oil storage chamber

[0046] 55, lever 56, stress block 57, reset spring

[0047] 58. Filter layer

[0048] 60. Sealing ring

[0049] 70, transmission mechanism 71, cam 80, agitation mechanism

[0050] 81. movable housing 82. pressure spring 83. elastic membrane

[0051] 90. Spindle DETAILED DESCRIPTION

[0052] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0053] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] For the purpose of simplicity and illustration, the principles of the embodiments are described mainly by reference to examples. In the following description, many specific details are presented to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known dynamic lubrication methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments may be used in combination with each other.

[0056] Embodiment 1:

[0057] A roller bearing structure with dynamic lubrication is applied to a wind turbine, which includes: a bearing inner ring 10, a bearing outer ring 20, a bearing roller 30, a disc cover 40, and a dynamic oil replenishing mechanism 50. The bearing inner ring 10 is connected to a main shaft 90 of the wind turbine.

[0058] An oil inlet hole 11 is provided on the side of the bearing inner ring 10. The bearing outer ring 20 is sleeved on the bearing inner ring 10, and an inner cavity 12 is formed between the bearing outer ring 20 and the bearing inner ring 10 at the middle end, and the inner cavity 12 is connected to the oil inlet hole 11. The bearing outer ring 20 surrounds the bearing inner ring 10, and the bearing inner ring 10 has a rotation function relative to the bearing outer ring 20. The bearing roller 30 (cylindrical or conical) is arranged between the bearing inner ring 10 and the bearing outer ring 20 to form a rolling arrangement.

[0059] The disc cover 40 is connected to the bearing outer ring 20, and the disc cover 40, the bearing outer ring 20 and the bearing inner ring 10 form an outer cavity 41 at the outer position. The inner cavity 12 is located on one side of the bearing roller 30, and the outer cavity 41 is located on the other side of the bearing roller 30.

[0060] The dynamic oil replenishing mechanism 50 is installed in the flange 42 of the disc cover 40 . The dynamic oil replenishing mechanism 50 is slidably connected to the bearing inner ring 10 . The dynamic oil replenishing mechanism 50 comprises: an oil flow channel 51 , an oil replenishing cylinder 52 , a sliding oil push block 53 , and a stress block 56 .

[0061] The oil flow passage 51 has negative pressure, and the oil flow passage 51 is connected to the oil discharge hole 13 on the side of the bearing outer ring 20 and connected to the outer cavity 41. The outlet of the oil replenishment cylinder 52 is provided with an elastic sealing block 521 inclined inward. The sliding oil push block 53 is slidably sleeved outside the oil replenishment cylinder 52. The sliding oil push block 53 extends inward with a convex block with a hole, which is tightly attached to the side wall of the oil storage chamber 54 in the oil replenishment cylinder 52. The oil storage chamber 54 is connected to the outlet of the oil replenishment cylinder 52 and the oil flow passage 51. The stress block 56 is transmission-connected to the sliding oil push block 53, and the stress block 56 is arranged at the connection position between the dynamic oil replenishment mechanism 50 and the inner ring 10 of the bearing.

[0062] Implementation steps: Grease is injected into the inner cavity 12 through the oil inlet hole 11 on the side of the bearing inner ring 10, and then as the grease in the inner cavity 12 increases, it is guided to the outer cavity 41 through the inner cavity 12, and the excess grease is effectively discharged from the oil discharge hole 13 on the side of the outer cavity 41. The grease discharged from the oil discharge hole 13 is collected through the oil flow channel 51 of the dynamic oil replenishing mechanism 50, so that the grease enters the oil storage cavity 54 of the oil replenishing cylinder 52 through the oil flow channel 51. When the bearing consumes grease after working for a long time, the contact surface between the upper end of the bearing roller 30 and the bearing inner ring 10 and the bearing outer ring 20 is insufficient, resulting in poor lubrication. The poor lubrication generates vibrations so that the bearing inner ring 10 triggers the stress block 56 of the dynamic oil replenishing mechanism 50, causing the stress block 56 to move and push the sliding lubrication block to slide, thereby causing the convex block of the sliding lubrication block to push and squeeze the grease in the oil storage chamber 54, causing the grease to push open the elastic sealing block 521 at the front end of the oil replenishing cylinder 52, allowing the grease to enter the outer cavity 41, and lubricate the bearing inner ring 10, the bearing outer ring 20 and the bearing roller 30.

[0063] The present invention collects excess grease injected into the bearing through the dynamic oil replenishing mechanism 50, and after the bearing consumes the grease during long-term operation, the stress generated by poor lubrication or other forces pushes the stress block 56 of the dynamic oil replenishing mechanism 50, so that the stress block 56 moves to push the sliding lubrication block to slide, and then the convex block of the sliding lubrication block pushes and squeezes the grease in the oil storage chamber 54, so that the grease enters the outer chamber 41, and the bearing inner ring 10, the bearing outer ring 20 and the bearing roller 30 are lubricated passively or actively. By passively or actively lubricating the bearing inner ring 10, the bearing outer ring 20 and the bearing roller 30 during operation, insufficient grease at the contact surface between the upper end of the bearing roller 30 and the bearing inner ring 10 and the bearing outer ring 20 is avoided, resulting in poor lubrication.

[0064] A mounting opening 40 is provided on the flange 42 side of the disk cover 40 , and a sealing ring 60 is installed in the mounting opening 40 . The sealing ring 60 is used to seal the gap between the bearing inner ring 10 and the bearing outer ring 20 to prevent grease from leaking from the outer cavity 41 .

[0065] The disc cover 40 has an oil extraction channel 421, which is connected to the oil circulation channel 51. A filter layer 58 for filtering impurities is provided in the oil circulation channel 51. The device for extracting grease from the oil extraction channel 421 can be collected by a grease cup, a pipe fitting, a hose or a similar grease collection mechanism, which can then be connected to one or more containers.

[0066] A cage is installed between the bearing outer ring 20 and the bearing inner ring 10 , and the bearing rollers 30 are held by the cage in positions circumferentially spaced at equal intervals.

[0067] The bearing outer ring 20 and the disk cover 40 are integrally formed or the bearing outer ring 20 and the disk cover 40 are two identical or different ring-shaped structures.

[0068] The dynamic oil replenishing mechanism 50 also has a lever 55, which is movably installed in the dynamic oil replenishing mechanism 50, and the two ends of the lever 55 are movably connected to the stress block 56 and the sliding oil pushing block 53 respectively, and can also be slidably connected. The stress block 56 is provided with a reset spring 57.

[0069] A convex point is provided at the sliding connection between the inner ring 10 of the bearing and the dynamic oil replenishing mechanism 50. Through the action of the convex point provided at the sliding connection between the inner ring 10 of the bearing and the dynamic oil replenishing mechanism 50, each rotation of the inner ring 10 of the bearing triggers the movement of the stress block 56 once or multiple times, so that the movement of the stress block 56 pushes the sliding lubricating block to slide, and then the convex block of the sliding lubricating block pushes and squeezes the grease in the oil storage chamber 54, so that the grease pushes away the elastic sealing block 521 at the front end of the oil replenishing cylinder 52, so that the grease enters the outer chamber 41, and actively lubricates the inner ring 10 of the bearing, the outer ring 20 of the bearing and the bearing roller 30, and avoids to the greatest extent the insufficient amount of grease on the contact surface between the upper end of the bearing roller 30 and the inner ring 10 of the bearing and the outer ring 20 of the bearing, resulting in poor lubrication.

[0070] Embodiment 2:

[0071] A roller bearing structure with dynamic lubrication has the same characteristic structure as the first embodiment, wherein: Figure 7 As shown, a transmission mechanism 70 with a rotation function is provided on the inner side surface of the bearing outer ring 20 . The transmission mechanism 70 is in close contact with the bearing roller 30 , and a cam 71 is provided at the side end of the transmission mechanism 70 .

[0072] The inner side surface of the bearing outer ring 20 is also provided with an inwardly concave notch, and a movable housing 81 is slidably arranged at the notch. The movable housing 81 is connected to a pressure spring 82 , and an end of the movable housing 81 facing the inner cavity 12 has an elastic membrane 83 .

[0073] like Figure 8 As shown, when the bearing consumes grease after working for a long time, resulting in insufficient grease on the contact surface between the bearing roller 30 and the bearing outer ring 20, the bearing roller 30 drives the transmission mechanism 70 to rotate through the damping force, so that the cam 71 repeatedly pushes the movable shell 81 to slide. Under the action of the pressure spring 82, the movable shell 81 causes the elastic membrane 83 to agitate the air in the inner cavity 12 when moving, thereby accelerating the air flow in the inner cavity 12, and then allowing the grease to flow upward to a certain extent, thereby improving the lubrication effect of the bearing.

[0074] Embodiment three:

[0075] A dynamic lubrication method, comprising the following steps:

[0076] Grease is injected into the inner cavity 12 through the oil inlet hole 11 on the side of the bearing inner ring 10, and then the grease increased in the inner cavity 12 is guided to the outer cavity 41 through the inner cavity 12, and the excess grease is effectively discharged from the oil discharge hole 13 on the side of the outer cavity 41;

[0077] The grease discharged from the oil discharge hole 13 is collected by the oil flow passage 51 of the dynamic oil replenishing mechanism 50, so that the grease enters the oil storage chamber 54 of the oil replenishing cylinder 52 through the oil flow passage 51;

[0078] When the bearing is working, the convex points provided at the sliding connection between the bearing inner ring 10 and the dynamic oil replenishing mechanism 50 act so that the bearing inner ring 10 rotates once or multiple times, triggering the movement of the stress block 56, so that the movement of the stress block 56 pushes the sliding lubricating block to slide, and then the convex block of the sliding lubricating block pushes and squeezes the grease in the oil storage chamber 54, so that the grease pushes away the elastic sealing block 521 at the front end of the oil replenishing cylinder 52, so that the grease enters the outer chamber 41, and actively lubricates the bearing inner ring 10, the bearing outer ring 20 and the bearing roller 30, so as to avoid insufficient grease on the contact surface between the upper end of the bearing roller 30 and the bearing inner ring 10 and the bearing outer ring 20, resulting in poor lubrication;

[0079] Furthermore, when the bearing consumes grease after working for a long time, resulting in insufficient grease on the contact surface between the upper end of the bearing roller 30 and the bearing inner ring 10 and the bearing outer ring 20, resulting in poor lubrication, the poor lubrication generates vibrations so that the bearing inner ring 10 triggers the stress block 56 of the dynamic oil replenishing mechanism 50, causing the stress block 56 to move and push the sliding lubrication block to slide, thereby causing the convex block of the sliding lubrication block to push and squeeze the grease in the oil storage chamber 54, causing the grease to push open the elastic sealing block 521 at the front end of the oil replenishing cylinder 52, allowing the grease to enter the outer cavity 41, thereby lubricating the bearing inner ring 10, the bearing outer ring 20 and the bearing roller 30.

[0080] Although the above describes the illustrative specific embodiments of the present invention so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, all inventions and creations using the concepts of the present invention are protected.

Claims

1. A roller bearing structure with dynamic lubrication, wherein: include: A bearing inner ring, wherein an oil inlet hole is provided on the side of the bearing inner ring; A bearing outer ring, wherein the bearing outer ring is sleeved on the bearing inner ring, an inner cavity is formed between the bearing outer ring and the bearing inner ring at the middle end, the inner cavity is communicated with the oil inlet hole, the bearing outer ring surrounds the bearing inner ring, and the bearing inner ring has a rotation function relative to the bearing outer ring; Bearing rollers, the bearing rollers are arranged between the bearing inner ring and the bearing outer ring to form a rolling arrangement; A disc cover, the disc cover is connected to the bearing outer ring, and the disc cover, the bearing outer ring and the bearing inner ring form an outer cavity at an outer position; A dynamic oil replenishing mechanism, the dynamic oil replenishing mechanism is installed in the flange of the disc cover, the dynamic oil replenishing mechanism is slidably connected with the inner ring of the bearing, and the dynamic oil replenishing mechanism has: An oil flow passage, the oil flow passage being connected to an oil discharge hole provided on the outer ring side of the bearing and connected to the outer cavity; An oil replenishing cylinder, wherein an inwardly inclined elastic sealing block is provided at the outlet of the oil replenishing cylinder; A sliding oil push block, the sliding oil push block is slidably sleeved outside the oil replenishing cylinder, the sliding oil push block has a convex block with a hole extending inwardly, the convex block is tightly attached to the side wall of the oil storage chamber in the oil replenishing cylinder, and the oil storage chamber is connected with the outlet of the oil replenishing cylinder and the oil flow channel; A stress block is transmission-connected with the sliding oil push block, and the stress block is arranged at the connection position between the dynamic oil replenishing mechanism and the inner ring of the bearing.

2. The roller bearing structure with dynamic lubrication according to claim 1, wherein: The inner cavity is located on one side of the bearing roller, and the outer cavity is located on the other side of the bearing roller.

3. The roller bearing structure with dynamic lubrication according to claim 1, wherein: The flange side of the disc cover is provided with an installation opening, and a sealing ring is installed in the installation opening. The sealing ring is used to seal the gap between the inner ring of the bearing and the outer ring of the bearing to prevent grease from leaking from the outer cavity.

4. The roller bearing structure with dynamic lubrication according to claim 1, wherein: The disc cover has an oil extraction channel, which is communicated with the oil circulation channel. A filter layer for filtering impurities is provided in the oil circulation channel.

5. The roller bearing structure with dynamic lubrication according to claim 1, wherein: A cage is installed between the bearing outer ring and the bearing inner ring, and the bearing rollers are held by the cage in positions circumferentially spaced at equal intervals.

6. The roller bearing structure with dynamic lubrication according to claim 1, wherein: The bearing outer ring and the disk cover are integrally formed, or the bearing outer ring and the disk cover are two identical or different ring-shaped structures.

7. The roller bearing structure with dynamic lubrication according to claim 1, wherein: The inner ring of the bearing is connected to the main shaft of the wind generator.

8. The roller bearing structure with dynamic lubrication according to claim 1, wherein: The dynamic oil replenishing mechanism also has a lever, which is movably installed in the dynamic oil replenishing mechanism, and the two ends of the lever are movably connected to the stress block and the sliding oil pushing block respectively.

9. A dynamic lubrication method, wherein: The dynamic lubrication method is based on the dynamic lubrication roller bearing structure described in any one of claims 1 to 8, and the dynamic lubrication method comprises the following steps: Grease is injected into the inner cavity through the oil inlet hole on the inner ring side of the bearing, and then the grease that increases in the inner cavity is guided to the outer cavity through the inner cavity, and the excess grease is effectively discharged from the oil drain hole on the outer cavity side; The grease discharged from the oil drain hole is collected through the oil flow passage of the dynamic oil replenishing mechanism, so that the grease enters the oil storage chamber of the oil replenishing cylinder through the oil flow passage; When the bearing consumes grease after working for a long time, the contact surface between the upper end of the bearing roller and the inner ring and outer ring of the bearing is insufficient, resulting in poor lubrication. The poor lubrication generates vibration, causing the inner ring of the bearing to touch the stress block of the dynamic oil replenishing mechanism, causing the stress block to move and push the sliding oil push block to slide, thereby causing the convex block of the sliding oil push block to push and squeeze the grease in the oil storage chamber, causing the grease to push open the elastic sealing block at the front end of the oil replenishing cylinder, allowing the grease to enter the outer cavity and lubricate the inner ring, outer ring and bearing rollers of the bearing.

10. The dynamic lubrication method according to claim 9, wherein: When the bearing is working, the convex points set at the sliding connection between the inner ring of the bearing and the dynamic oil replenishing mechanism trigger the movement of the stress block once or multiple times every time the inner ring of the bearing rotates one circle, actively lubricating the inner ring of the bearing, the outer ring of the bearing and the bearing roller, and avoiding to the greatest extent the insufficient grease on the contact surface between the upper end of the bearing roller and the inner ring of the bearing and the outer ring of the bearing, resulting in poor lubrication.

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