A wind power bearing

Abstract

The present invention discloses a wind power bearing, which relates to the field of bearings, including an inner ring, an outer ring and a needle roller, wherein a hose is arranged inside the inner side wall of the outer ring, a cleaning groove is provided on the inner wall of the outer ring, an oil inlet shell is arranged on the inner wall of the cleaning groove, one end of the hose is connected to the cleaning groove, and the other end of the hose is connected to the oil outlet shell, and a one-way conduction mechanism is installed inside the oil inlet shell and the oil outlet shell. The present invention arranges a hose, and when the bearing is working, lubricating oil enters the cleaning groove from the oil inlet shell, and then enters the hose, and is filtered through a filter screen, and at the same time, the movement of the needle roller squeezes the hose, and the needle roller squeezes the lubricating oil in the hose out of the hose, and when a section of the lubricating oil is squeezed out, the inside of the hose draws the lubricating oil in the cleaning groove into the hose under the action of pressure, and the lubricating oil is self-cleaned and filtered inside the bearing through the movement force of the bearing itself.

Description

Technical Field

[0001] The invention relates to the field of bearings, and in particular to a wind power bearing. Background Art

[0002] Wind power bearings are a special type of bearings, mainly used in wind turbines, bearing the huge loads and complex working environment of wind turbines. They mainly include yaw bearings, pitch bearings, main shaft bearings, gearbox bearings and generator bearings, etc. Each bearing has its specific application position and working environment.

[0003] In order to reduce bearing friction, reduce wear, extend the service life of bearings, and ensure the safe and efficient operation of wind turbines, wind turbine bearings must be well lubricated. The lubrication of wind turbine bearings is mainly achieved through lubricants. Lubricants form an oil film in the bearing gap to reduce friction, reduce wear, and prevent foreign matter from invading the interior of the bearing to prevent rust or corrosion. Commonly used lubricants are grease and oil.

[0004] When using lubricating oil, wind turbine bearings need to maintain the cleanliness of the lubricating oil. During use, the bearing lubricating oil is easily contaminated by iron filings, dust, moisture, etc., which will not only reduce the performance of the lubricating oil, but also damage the bearings, resulting in poor operating performance of the bearings.

[0005] The cleanliness of the existing wind turbine bearing lubricating oil is generally maintained by filtering, and the lubricating oil is circulated to an external cleaning device for filtration. However, in some wind turbine bearings that add lubricating oil at a regular interval, the lubricating oil often works in the bearing for a certain period of time. At this time, impurities in the lubricating oil will affect the operating effect of the bearing during the working process. Summary of the invention

[0006] Based on this, the purpose of the present invention is to provide a wind turbine bearing to solve the technical problem that impurities in the lubricating oil of a general wind turbine bearing will affect the lubrication effect of the bearing.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wind power bearing, comprising an inner ring, an outer ring and a needle roller, a hose is arranged inside the inner wall of the outer ring, a cleaning groove is opened on the inner wall of the outer ring, an oil inlet shell is arranged on the inner wall of the cleaning groove, one end of the hose is connected to the cleaning groove, and the other end of the hose is connected to the oil outlet shell, a one-way conduction mechanism is installed inside the oil inlet shell and the oil outlet shell, a connecting shell is installed between the outer walls of the hose, a sealing mechanism is installed inside the connecting shell, and a filter is installed at one end of the hose.

[0008] The present invention is further configured such that the one-way conduction mechanism includes a baffle and a limit block, the baffle is rotatably arranged inside the oil inlet shell and the oil outlet shell through a rotating shaft, and a torsion spring is arranged between the baffle and the rotating shaft, and the limit block is fixedly arranged inside the oil inlet shell and the oil outlet shell.

[0009] The present invention is further configured such that a sealing layer is provided at the contact position between the baffle plate and the limit block.

[0010] The present invention is further configured such that the sealing mechanism includes a rotating column, a fixed plate, a connecting mechanism and a mounting seat, the rotating column is rotatably arranged inside the connecting shell, the other end of the rotating column extends to the outside of the connecting shell and the outer ring, and one end of the rotating column is installed with a connecting mechanism.

[0011] The present invention is further configured such that the connecting mechanism includes a fixed seat, a spring and a positioning block, the fixed seat is fixedly arranged at one end of the rotating column, a positioning block is fixedly arranged at one end of the mounting seat, a positioning groove matching with the positioning block is opened at one end of the fixed seat, a spring is installed inside the positioning groove, and one end of the spring is connected to the positioning block.

[0012] The present invention is further configured such that a positioning column is fixedly provided at one end of the mounting seat, and a groove matching with the positioning column is formed on the outer wall of the outer ring.

[0013] The present invention is further configured such that a sealing plate is fixedly provided on the outer wall of the outer ring by bolts, and the sealing plate seals the cleaning groove.

[0014] The present invention is further configured such that a dust cover is provided between the inner ring and the outer ring, and a plurality of oil holes are provided on an outer wall of the dust cover.

[0015] In summary, the present invention mainly has the following beneficial effects: the present invention arranges a hose, when the bearing is working, the lubricating oil enters the cleaning tank from the oil inlet shell, then enters the hose, and is filtered through the filter screen, and at the same time, the movement of the needle roller will squeeze the hose, and the needle roller will squeeze the lubricating oil in the hose out of the hose, and when a section of the lubricating oil is squeezed out, the lubricating oil in the cleaning tank is drawn into the hose under the action of the pressure inside the hose, and the lubricating oil is self-cleaned and filtered inside the bearing through the movement force of the bearing itself, and under the cooperation of the unidirectional conduction mechanism and the connecting shell, when the filter screen and the inside of the cleaning tank need to be cleaned, the normal operation of the bearing will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the mounting base of the present invention in an unmounted state;

[0018] Figure 3 It is a cross-sectional view of the three-dimensional structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the internal structure of the oil inlet housing of the present invention;

[0020] Figure 5 An exploded view of the rotating column and the connecting mechanism of the present invention;

[0021] Figure 6 For the present invention Figure 2 A magnified view of the structure at A.

[0022] In the figure: 1. Inner ring; 2. Outer ring; 3. Needle roller; 4. Hose; 5. Cleaning groove; 6. Oil inlet shell; 7. Oil outlet shell; 8. Baffle; 9. Limit block; 10. Filter; 11. Connecting shell; 12. Rotating column; 13. Fixed plate; 14. Fixed seat; 15. Spring; 16. Positioning block; 17. Mounting seat; 18. Positioning column; 19. Sealing plate; 20. Dust cover; 21. Oil hole. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] A wind power bearing, such as Figure 1-6 As shown, it includes an inner ring 1, an outer ring 2 and a needle roller 3. The needle roller 3 is installed on the retaining frame and is combined with the inner ring 1 and the outer ring 2 to form a wind power bearing body. A dust cover 20 is arranged between the inner ring 1 and the outer ring 2. The outer wall of the dust cover 20 is provided with multiple oil holes 21. The dust cover 20 protects the inside of the bearing from dust, and lubricating oil can be added to the inside of the bearing through the oil hole 21.

[0025] A hose 4 is arranged inside the inner wall of the outer ring 2, a cleaning groove 5 is opened on the inner wall of the outer ring 2, an oil inlet shell 6 is arranged on the inner wall of the cleaning groove 5, one end of the hose 4 is connected to the cleaning groove 5, and the other end of the hose 4 is connected to the oil outlet shell 7. Both ends of the hose 4 are installed in the wall of the outer ring 2, and the middle is exposed to the contact surface between the outer ring 2 and the needle roller 3. When the needle roller 3 and the retaining frame rotate, the hose 4 will be squeezed.

[0026] The lubricating oil enters the cleaning tank 5 from the oil inlet housing 6 and then enters the hose 4. A filter screen 10 is installed at one end of the hose 4. Before entering the hose 4, the filter screen 10 filters the impurities in the lubricating oil. The filtered lubricating oil is discharged from the oil outlet housing 7 and enters the inside of the bearing to perform new lubrication work.

[0027] The oil inlet shell 6 and the oil outlet shell 7 are both installed with a one-way conduction mechanism, which includes a baffle 8 and a limit block 9. The baffle 8 is set inside the oil inlet shell 6 and the oil outlet shell 7 by rotating the rotating shaft, and a torsion spring is set between the baffle 8 and the rotating shaft. The exposed hose 4 will be squeezed when the needle roller 3 and the retaining frame rotate, and a section of the lubricating oil inside the hose 4 will be squeezed out. At this time, the pressure inside the hose 4 will suck the external lubricating oil from the one-way conduction mechanism inside the oil inlet shell 6, and the baffle 8 will be rotated in the oil inlet direction under the force, and the lubricating oil will enter the oil inlet shell 6 and the cleaning tank 5. The lubricating oil squeezed out from the other end of the hose 4 will squeeze the baffle 8 inside the oil outlet shell 7, so that the baffle 8 will rotate and open in the oil outlet direction, and be discharged from the oil outlet shell 7 into the bearing.

[0028] Furthermore, in order to limit the rotation direction of the baffle 8, a limit block 9 is fixedly arranged inside the oil inlet shell 6 and the oil outlet shell 7. The baffle 8 inside the oil inlet shell 6 and the oil outlet shell 7 can only be opened along the oil inlet and oil outlet directions under the action of the limit block 9, and a sealing layer is provided at the contact position between the baffle 8 and the limit block 9. The sealing layer can effectively improve the contact sealing effect between the baffle 8 and the limit block 9.

[0029] At the same time, after the suction force at one end of the hose 4 and the thrust of the lubricating oil disappear, the baffle 8 is reset under the action of the torsion spring, and cooperates with the limit block 9 to seal the oil inlet shell 6 and the oil outlet shell 7.

[0030] After the filter 10 has filtered for a period of time, the filtering effect of the filter 10 will be reduced. At this time, the filter 10 needs to be cleaned, so the filter 10 needs to be cleaned without stopping the machine. A connecting shell 11 is installed between the outer walls of the hose 4, and a sealing mechanism is installed inside the connecting shell 11. When the filter 10 needs to be cleaned, the sealing mechanism in a closed state needs to be opened so that the connecting shell 11 connects the hose 4. When the hose 4 is connected, the sealing plate 19 fixed by bolts on the outer wall of the outer ring 2 is opened. At this time, the rotation of the needle roller 3 and the retaining frame will still squeeze the hose 4, but at this time, the lubricating oil will be discharged from the opened sealing plate 19 first, and because the internal and external pressures of the cleaning tank 5 are equal, the hose 4 will no longer extract lubricating oil from the inside of the bearing after being squeezed. The staff can clean the cleaning tank 5 and the filter 10 at this time.

[0031] In addition, a position sensor is installed between the baffle 8 and the inner wall of the oil inlet shell 6. The position of the baffle 8 is sensed by the position sensor. When the baffle 8 does not rotate for a long time, it indicates that the filter 10 is blocked and needs to be cleaned. At this time, subsequent cleaning work can be carried out.

[0032] The sealing mechanism includes a rotating column 12, a fixed plate 13, a connecting mechanism and a mounting seat 17. The rotating column 12 is rotatably arranged inside the connecting shell 11. The other end of the rotating column 12 extends to the outside of the connecting shell 11 and the outer ring 2. A connecting mechanism is installed at one end of the rotating column 12. The connecting shell 11 is sealed by the rotating column 12 and the fixed plate 13. The side wall of the fixed plate 13 is provided with a sealing rubber ring, which can be sealed with the inner wall of the connecting shell 11. When the fixed plate 13 is in a vertical state, the connecting shell 11 is sealed. Therefore, when the sealing state needs to be released, the rotating column 12 is rotated ninety degrees to make the fixed plate 13 horizontal. At this time, the two ends of the connecting shell 11 are connected.

[0033] The connecting mechanism includes a fixing seat 14, a spring 15 and a positioning block 16. The fixing seat 14 is fixedly arranged at one end of the rotating column 12, and a positioning block 16 is fixedly arranged at one end of the mounting seat 17. A positioning groove matching with the positioning block 16 is provided at one end of the fixing seat 14, and a spring 15 is installed inside the positioning groove. One end of the spring 15 is connected to the positioning block 16, and a positioning column 18 is fixedly arranged at one end of the mounting seat 17. A groove matching with the positioning column 18 is provided on the outer wall of the outer ring 2. When it is necessary to rotate the rotating column 12, the mounting seat 17 is grasped to disengage the positioning column 18 from the groove, and the positioning block 16 is driven to move outward along the positioning groove, so that the spring 15 is in a stretched state. At this time, the mounting seat 17 is rotated, and the mounting seat 17 drives the positioning block 16 to rotate. When the positioning block 16 rotates, it will drive the fixing seat 14 and the rotating column 12 to rotate at the same time. When the rotation angle reaches ninety degrees, the mounting seat 17 is released, and the positioning column 18 is inserted into the groove for fixation.

[0034] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A wind turbine bearing, comprising an inner ring (1), an outer ring (2) and a needle roller (3), characterized in that: A hose (4) is arranged inside the inner wall of the outer ring (2), a cleaning groove (5) is provided on the inner wall of the outer ring (2), an oil inlet shell (6) is arranged on the inner wall of the cleaning groove (5), one end of the hose (4) is connected to the cleaning groove (5), the other end of the hose (4) is connected to the oil outlet shell (7), both ends of the hose (4) are installed inside the wall of the outer ring (2), and the middle is exposed to the contact surface between the outer ring (2) and the needle roller (3); a one-way conduction mechanism is installed inside the oil inlet shell (6) and the oil outlet shell (7), a connecting shell (11) is installed between the outer walls of the hose (4), a sealing mechanism is installed inside the connecting shell (11), and a filter screen (10) is installed at one end of the hose (4); The one-way conduction mechanism comprises a baffle (8) and a limit block (9); the baffle (8) is rotatably arranged inside the oil inlet housing (6) and the oil outlet housing (7) via a rotating shaft, and a torsion spring is arranged between the baffle (8) and the rotating shaft; the limit block (9) is fixedly arranged inside the oil inlet housing (6) and the oil outlet housing (7); The sealing mechanism comprises a rotating column (12), a fixing plate (13), a connecting mechanism and a mounting seat (17); the rotating column (12) is rotatably arranged inside the connecting shell (11); the other end of the rotating column (12) extends to the outside of the connecting shell (11) and the outer ring (2); and one end of the rotating column (12) is installed with the connecting mechanism; The connecting mechanism comprises a fixing seat (14), a spring (15) and a positioning block (16); the fixing seat (14) is fixedly arranged at one end of the rotating column (12); the positioning block (16) is fixedly arranged at one end of the mounting seat (17); a positioning groove matching with the positioning block (16) is formed at one end of the fixing seat (14); a spring (15) is installed inside the positioning groove; and one end of the spring (15) is connected to the positioning block (16); A positioning column (18) is fixedly provided at one end of the mounting seat (17), and a groove matching the positioning column (18) is provided on the outer wall of the outer ring (2).

2. A wind power bearing according to claim 1, characterized in that: A sealing layer is provided at the contact position between the baffle plate (8) and the limiting block (9).

3. A wind power bearing according to claim 1, characterized in that: A sealing plate (19) is fixedly provided on the outer wall of the outer ring (2) by means of bolts, and the sealing plate (19) seals the cleaning groove (5).

4. A wind power bearing according to claim 1, characterized in that: A dust cover (20) is provided between the inner ring (1) and the outer ring (2), and a plurality of oil holes (21) are provided on the outer wall of the dust cover (20).

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