Sealing device for main bearing of wind driven generator

Abstract

The utility model discloses a sealing device for a main bearing of a wind driven generator, which relates to the technical field of sealing of the main bearing of the wind driven generator and comprises a lower retainer, a rolling column unit, an outer ring unit and an inner ring unit, a rolling column unit and an inner ring unit are mounted at the upper end of the lower retainer; each rolling column unit comprises cylindrical rollers, first through holes, an upper retainer and a first fixing rod, the cylindrical rollers are evenly and rotationally connected to the inner side of the upper end of the lower retainer, a plurality of first through holes are evenly formed in the lower retainer and the upper retainer in an up-down corresponding mode, and the cylindrical rollers are rotationally connected to the inner side of the upper retainer. The upper retainer is fixedly connected with the lower retainer through a fixing rod I; according to the sealing device for the main bearing of the wind driven generator, the sealing part of the bearing is convenient to disassemble and maintain, and meanwhile, the main shaft part can effectively form a sealing cavity to prevent dust from entering.

Description

Technical Field

[0001] The utility model relates to the technical field of main shaft bearing sealing of wind generators, in particular to a main shaft bearing sealing device of a wind generator. Background Art

[0002] At present, wind turbine generator sets generally include wind turbines, gearboxes, generators, controllers and structural parts, etc. However, the main shaft bearings of megawatt-class wind turbines have poor sealing performance. When the wind turbine is working, there is friction between the bearings and the bearing seats, and lubricating oil needs to be injected. However, the leakage of lubricating oil is relatively common, and pollutants such as dust from the outside will also enter the bearings, affecting the service life of the bearings.

[0003] Among them, the prior art has a wind turbine main bearing sealing device proposed in the authorization announcement number CN205315510U, which includes a port cover I, a main shaft bearing, a rolling element, a bearing seat, a port cover II and a port cover mounting hole, wherein the port cover I and the port cover II are fixed to the bearing seat by bolts, an upper groove is provided on the upper half of the main shaft bearing, a lower groove is provided on the lower half thereof, the rolling element is arranged between the upper groove and the lower groove, and a sealing ring is provided between the port cover I and the port cover II and the shaft sleeve;

[0004] In the prior art, the sealing part of the bearing is not easy to disassemble and repair, and the main shaft part cannot effectively form a sealed chamber, which is easy to enter dust. Therefore, we propose a main bearing sealing device for a wind turbine. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a main bearing sealing device for a wind turbine generator. The sealing part of the bearing is easy to disassemble and repair, and the main shaft part can effectively form a sealed chamber to prevent dust from entering, which can effectively solve the problems in the background technology.

[0006] To achieve the above objectives, the utility model provides the following technical solutions: a wind turbine main bearing sealing device, the outer ring unit comprises an outer ring and a second through hole, the inner side of the outer ring is rotatably connected with a cylindrical roller, and the upper end of the outer ring is evenly provided with a second through hole.

[0007] The fixing rod 1 fixes the upper retainer and the lower retainer through the first through hole opened on the upper retainer and the lower retainer, so that the position of the cylindrical roller between the upper retainer and the lower retainer is limited.

[0008] Furthermore, the outer ring unit comprises an outer ring and a second through hole, the inner side of the outer ring is rotatably connected with a cylindrical roller, and the upper end of the outer ring is evenly provided with a second through hole. The outer ring is used to limit and fix the rotating parts of the bearing, thereby protecting the internal parts and achieving the fixing effect.

[0009] Furthermore, the outer ring unit further comprises a second fixing rod and an outer ring fixing plate, the outer ring fixing plate is also evenly provided with a plurality of second through holes, and the upper end of the outer ring is fixedly connected to the fixing plate through the second fixing rod and the second through holes. The outer ring fixing plate is fixed to the outer ring through the second fixing rod to protect and limit the internal ball bearing parts, and at the same time form a sealed cavity.

[0010] Furthermore, the inner ring unit comprises an inner ring, a groove, a damping rod, a spring and a fixed block. The outer side of the inner ring is rotatably connected to the cylindrical roller, two grooves are provided at both ends of the inner side of the inner ring, one end of the damping rod is fixedly connected to the inner side of the inner ring, the other end of the damping rod is fixedly connected to the fixed block, and a spring is sleeved on the damping rod between the fixed block and the inner ring. The inner ring is used to protect the internal device parts and the fixed block is used to fix the device inside the bearing to increase friction, the damping rod is used to fix the fixed block, and the groove is used to limit the fixed block.

[0011] Furthermore, the inner ring unit further comprises an inner ring block, a fixing rod 3 and a third through hole, the inner ring block and the upper end of the inner ring are evenly provided with the third through hole, and the inner ring block is fixedly connected to the upper end of the inner ring through the fixing rod 3. The fixing block is pressed by the spring to increase friction and fix the inner ring, and the fixing rod 3 and the third through hole are used to fix the inner ring and protect the internal rotating parts, thereby achieving the purpose of dust prevention.

[0012] Furthermore, it also includes an oil filling port, an arc-shaped shell, a nut, a bolt and an arc-shaped rubber ring. Four oil filling ports are opened on the outside of the outer ring. An arc-shaped rubber ring is fixedly connected to the inside of the arc-shaped shell. The two ends of the two arc-shaped shells on the outside of the outer ring are fixedly connected by nuts and bolts. The arc-shaped shell and the nut are fixed by bolts and arc-shaped rubber rings, and the bearing is sealed and protected by nuts to prevent dust from entering and lubricating oil from leaking.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the main bearing sealing device of the wind turbine generator has the following advantages:

[0014] 1. The main bearing sealing device of the wind turbine generator has a sealing part which is easy to disassemble and repair. The sealing part of the bearing is isolated from the outside by a sealing plate through a ball bearing, so that a cavity with good sealing performance is formed inside the main shaft, thereby further isolating the entry of dust.

[0015] 2. The main bearing sealing device of the wind turbine generator can effectively form a sealed chamber on the main shaft part to prevent dust from entering. The outer ring fixing plate is fixed to the outer ring by the fixing rod 2 to protect and limit the internal ball parts, and a sealed chamber is formed at the same time. The arc shell and nuts are fixed by bolts and arc rubber rings, and the bearing is sealed and protected by the nuts to prevent dust from entering and leakage of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0018] Figure 3 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point B in the middle.

[0019] In the figure: 1 lower retainer, 2 oil filling port, 3 rolling column unit, 31 cylindrical roller, 32 first through hole, 33 upper retainer, 34 fixing rod one, 4 outer ring unit, 41 outer ring, 42 second through hole, 43 fixing rod two, 44 ​​outer ring fixing plate, 5 inner ring unit, 51 inner ring, 52 groove, 53 damping rod, 54 spring, 55 fixing block, 56 inner ring stopper, 57 fixing rod three, 58 third through hole, arc shell, 7 nut, 8 bolt, 9 arc rubber ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 , This embodiment provides a technical solution for a main bearing sealing device of a wind turbine generator: A main bearing sealing device of a wind turbine generator, A main bearing sealing device of a wind turbine generator, comprising a lower retainer 1, a rolling column unit 3, an outer ring unit 4 and an inner ring unit 5;

[0022] Lower cage 1: The upper end is equipped with a rolling column unit 3 and an inner ring unit 5;

[0023] Rolling column unit 3: includes cylindrical roller 31, first through hole 32, upper retainer 33 and fixing rod 34, the inner side of the upper end of lower retainer 1 is evenly connected with cylindrical roller 31 for rotation, multiple first through holes 32 are evenly provided on the upper and lower sides of lower retainer 1 and upper retainer 33 for corresponding connection, cylindrical roller 31 is rotationally connected on the inner side of upper retainer 33, upper retainer 33 and lower retainer 1 are fixedly connected by fixing rod 34; fixing rod 34 fixes upper retainer 33 and lower retainer 1 through first through hole 32 provided on upper retainer 33 and lower retainer 1, so that the position of cylindrical roller 31 is limited between upper retainer 33 and lower retainer 1.

[0024] Outer ring unit 4: mounted on the roller unit 3. The outer ring unit 4 includes an outer ring 41 and a second through hole 42. The inner side of the outer ring 41 is rotatably connected to the cylindrical roller 31. The upper end of the outer ring 41 is evenly provided with second through holes 42. The outer ring 41 is used to limit and fix the rotating parts of the bearing, thereby protecting the internal parts and achieving the fixing effect.

[0025] The outer ring unit 4 further includes a second fixing rod 43 and an outer ring fixing plate 44. The outer ring fixing plate 44 is also evenly provided with a plurality of second through holes 42. The upper end of the outer ring 41 is fixedly connected to the fixing plate 44 through the second fixing rod 43 and the second through holes 42. The outer ring fixing plate 44 is fixed to the outer ring 41 through the second fixing rod 43 to protect and limit the internal ball parts and form a sealed cavity.

[0026] The inner ring unit 5 comprises an inner ring 51, a groove 52, a damping rod 53, a spring 54 and a fixing block 55. The outer side of the inner ring 51 is rotatably connected to the cylindrical roller 31. Two grooves 52 are provided at both ends of the inner side of the inner ring 51. One end of the damping rod 53 is fixedly connected to the inner side of the inner ring 51. The other end of the damping rod 53 is fixedly connected to the fixing block 55. A spring 54 is sleeved on the damping rod 53 between the fixing block 55 and the inner ring 51. The inner ring 51 is used to protect the internal device parts and the fixing block 55 is used to fix the device inside the bearing to increase friction. The fixing block 55 is fixed by the damping rod 53 and the fixing block 55 is limited by the groove 52.

[0027] The inner ring unit 5 further comprises an inner ring stopper 56, a fixing rod 3 57 and a third through hole 58. The inner ring stopper 56 and the upper end of the inner ring 51 are evenly provided with the third through hole 58, and the inner ring stopper 56 is fixedly connected to the upper end of the inner ring 51 through the fixing rod 3 57. The fixing block 55 is pressed by the spring 54 to increase friction and fix the inner ring 51, and the fixing rod 3 57 and the third through hole 58 are used to fix the inner ring 51 and protect the internal rotating parts, thereby achieving the purpose of dust prevention.

[0028] It also includes an oil filling port 2, an arcuate shell 6, a nut 7, a bolt 8 and an arcuate rubber ring 9. Four oil filling ports 2 are opened on the outside of the outer ring 41. The inner side of the arcuate shell 6 is fixedly connected with an arcuate rubber ring 9. The two ends of the two arcuate shells 6 on the outside of the outer ring 41 are fixedly connected by nuts 7 and bolts 8. The arcuate shell 6 and the nut 7 are fixed by bolts 8 and arcuate rubber rings 9, and the bearing is sealed and protected by nuts 7 to prevent dust from entering and lubricating oil from leaking.

[0029] The working principle of the main bearing sealing device of a wind turbine provided by the utility model is as follows: the fixing rod 1 34 fixes the upper retainer 33 and the lower retainer 1 through the first through hole 32 opened on the upper retainer 33 and the lower retainer 1, so that the position of the cylindrical roller 31 between the upper retainer 33 and the lower retainer 1 is limited. The rotating parts of the bearing are limited and fixed by the outer ring 41 to protect the internal parts to achieve the fixing effect. The outer ring fixing plate 44 is fixed on the outer ring 41 by the fixing rod 2 43 to protect and limit the internal ball parts, and at the same time form a sealed cavity. The internal device parts are protected by the inner ring 51 and the device inside the bearing is fixed by the fixing block 55 to increase friction. The fixing block 55 is fixed by the damping rod 53 and the fixing block 55 is limited by the groove 52. The spring 54 applies pressure to the fixing block 55, thereby increasing friction and fixing the bearing. The fixing rod 57 and the third through hole 58 fix the inner ring 51 and protect the internal rotating parts, thereby preventing dust. The bolt 8 and the arc-shaped rubber ring 9 fix the arc-shaped shell 6 and the nut 7, and the nut 7 seals the bearing to prevent dust from entering and lubricating oil from leaking.

[0030] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A wind turbine main bearing sealing device, characterized in that: It comprises a lower retainer (1), a rolling column unit (3), an outer ring unit (4) and an inner ring unit (5); Lower retainer (1): a rolling column unit (3) and an inner ring unit (5) are mounted on the upper end; The rolling column unit (3) comprises a cylindrical roller (31), a first through hole (32), an upper retainer (33) and a fixing rod (34); the cylindrical roller (31) is evenly rotatably connected to the inner side of the upper end of the lower retainer (1); a plurality of first through holes (32) are evenly provided on the upper and lower sides of the lower retainer (1) and the upper retainer (33); the cylindrical roller (31) is rotatably connected to the inner side of the upper retainer (33); and the upper retainer (33) is fixedly connected to the lower retainer (1) via a fixing rod (34); Outer ring unit (4): mounted on the roller unit (3).

2. A wind turbine main bearing sealing device according to claim 1, characterized in that: The outer ring unit (4) comprises an outer ring (41) and a second through hole (42); a cylindrical roller (31) is rotatably connected to the inner side of the outer ring (41); and the second through hole (42) is evenly opened at the upper end of the outer ring (41).

3. A wind turbine main bearing sealing device according to claim 2, characterized in that: The outer ring unit (4) further comprises a second fixing rod (43) and an outer ring fixing plate (44), and a plurality of second through holes (42) are also evenly formed on the outer ring fixing plate (44), and the upper end of the outer ring (41) is fixedly connected to the fixing plate (44) via the second fixing rod (43) and the second through holes (42).

4. A wind turbine main bearing sealing device according to claim 1, characterized in that: The inner ring unit (5) comprises an inner ring (51), a groove (52), a damping rod (53), a spring (54) and a fixed block (55); the outer side of the inner ring (51) is rotatably connected to the cylindrical roller (31); two grooves (52) are provided at both ends of the inner side of the inner ring (51); one end of the damping rod (53) is fixedly connected to the inner side of the inner ring (51); the other end of the damping rod (53) is fixedly connected to the fixed block (55); and a spring (54) is sleeved on the damping rod (53) between the fixed block (55) and the inner ring (51).

5. A wind turbine main bearing sealing device according to claim 4, characterized in that: The inner ring unit (5) further comprises an inner ring stopper (56), a fixing rod three (57) and a third through hole (58); the inner ring stopper (56) and the upper end of the inner ring (51) are evenly provided with the third through hole (58); the inner ring stopper (56) is fixedly connected to the upper end of the inner ring (51) via the fixing rod three (57).

6. A wind turbine main bearing sealing device according to claim 1, characterized in that: It also comprises an oil filling port (2), an arc-shaped shell (6), a nut (7), a bolt (8) and an arc-shaped rubber ring (9); four oil filling ports (2) are provided on the outer side of the outer ring (41); an arc-shaped rubber ring (9) is fixedly connected to the inner side of the arc-shaped shell (6); and the two ends of the two arc-shaped shells (6) on the outer side of the outer ring (41) are fixedly connected by nuts (7) and bolts (8).

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