Device for collecting waste grease of main shaft of wind turbine generator

Abstract

The utility model provides a device for collecting waste grease of a main shaft of a wind turbine generator system, which comprises the wind turbine main shaft, a bearing seat rotationally connected with the wind turbine main shaft is sleeved on the wind turbine main shaft, an oil collecting box is arranged right below the bearing seat, two pipe sleeves are arranged at the bottom in the oil collecting box, the lower ends of the pipe sleeves penetrate through the oil collecting box, and the oil collecting box is arranged in the oil collecting box. Two supports are installed at the bottom of the bearing seat through screws, the lower ends of the supports penetrate through the pipe sleeve, blocking rings are arranged on the two sides, in the length direction of the wind power main shaft, of the bearing seat, the wind power main shaft is sleeved with the blocking rings, the blocking rings are fixedly connected with the wind power main shaft, and rings are installed on the edges of the opposite faces of the two blocking rings. The waste grease collecting device has the advantages that lubricating grease is prevented from diffusing out of the collecting range of the grease collecting box, and the waste grease collecting effect is improved.

Description

Technical Field

[0001] This utility model is a device for collecting waste grease from the main shaft of a wind turbine, belonging to the field of wind turbines. Background Technology

[0002] The main shaft of a wind turbine generator set, as the core component that transmits wind energy captured by the rotor to the gearbox, directly affects the generator set's power generation efficiency and lifespan. During normal operation, the main shaft bearings require continuous lubrication via an automatic lubrication system to reduce frictional losses. However, after prolonged high-load operation, the main shaft seals (such as lip seals) are prone to wear or aging, leading to seal failure and lubricant leakage. To prevent lubricant from dripping to the bottom of the nacelle, an oil collection box is installed directly below the bearing housing on the wind turbine main shaft. This box collects dripping lubricant. The dimensions of the oil collection box are fixed; its width or length is often much smaller than the length of the wind turbine main shaft. Because the paste-like lubricant has a certain viscosity, some lubricant diffuses along the wind turbine main shaft beyond the collection area of ​​the oil collection box, resulting in some lubricant not dripping into the box and poor collection of waste grease. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a device for collecting waste grease from the main shaft of a wind turbine, so as to solve the problems mentioned in the background art. This utility model prevents lubricating grease from spreading outside the collection range of the oil collection box and improves the collection effect of waste grease.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a device for collecting waste grease from the main shaft of a wind turbine, comprising a wind turbine main shaft, a bearing housing rotatably connected to the wind turbine main shaft, an oil collection box located directly below the bearing housing, two sleeves installed at the bottom of the oil collection box, the lower ends of the sleeves penetrating the oil collection box, two supports installed at the bottom of the bearing housing by screws, the lower ends of the supports penetrating the sleeves, a blocking ring provided on both sides of the bearing housing along the length of the wind turbine main shaft, the blocking rings being sleeved on the wind turbine main shaft and fixedly connected to it, a ring being installed at the edge of the opposite face of the two blocking rings, the structure formed by the rings and blocking rings being positioned directly above the oil collection box, and a cleaning component for cleaning the lubricating grease on the inner wall of the rings being installed in the middle of the oil collection box.

[0005] Furthermore, the cleaning component includes a connecting plate. The connecting plate is installed in the lower part of the oil collection box between two supports. The connecting plate is located directly below the bearing seat. Vertical plates are installed at both ends of the connecting plate. An oil guide cover is installed at the upper end of the vertical plate. An oil scraper cover is installed at the end of the oil guide cover away from the vertical plate. Both the oil guide cover and the oil scraper cover have a "U"-shaped structure. The opening direction of the oil guide cover and the opening direction of the oil scraper cover are opposite to the rotation direction of the wind turbine main shaft. The arc-shaped part at the lower end of the oil scraper cover slides in contact with the inner wall of the ring, and the arc-shaped part at the upper end of the oil scraper cover slides in contact with the wind turbine main shaft.

[0006] Furthermore, an inclined plate is installed at the end of the arc-shaped portion at the lower end of the oil guide cover, and the inclined plate and the oil guide cover together form a flow channel for lubricating grease.

[0007] Furthermore, L-shaped plates are installed on both sides of the connecting plate facing the support. Ear plates are fixedly connected to the upper end of the L-shaped plates. The ear plates are located between the support and the bearing seat. A through hole for inserting a screw is opened on the upper surface of the ear plates. One end of the screw passes through the bearing seat and the through hole and is threaded to the support.

[0008] Furthermore, the ear plate and the L-shaped plate are integrally formed, and the vertical portions of the ear plate and the L-shaped plate are arranged perpendicular to each other.

[0009] Furthermore, an oblong opening is provided on the vertical part of the L-shaped plate, and the oblong opening is arranged vertically.

[0010] Furthermore, two strip-shaped openings are symmetrically formed on the upper surface of the connecting plate, and the lower end of the vertical plate is installed in the strip-shaped openings.

[0011] The beneficial effects of this utility model are:

[0012] 1. The blocking rings on both sides of the bearing housing are fixed to the wind turbine main shaft to form a transverse barrier, which intercepts the grease that spreads along the axial direction of the wind turbine main shaft within the ring range, so that the grease is concentrated in a small area on both sides of the bearing housing. The ring and the blocking ring form an annular groove, and the centrifugal force of the main shaft rotation guides the radially thrown grease into the oil collection box directly above it, preventing the grease from dripping to the outside of the oil collection box and improving the collection effect of waste grease.

[0013] 2. The structure formed by the oil scraper and the oil guide is inserted into the space formed by the corresponding ring and the blocking ring. When the wind turbine main shaft rotates, the structure formed by the oil scraper and the oil guide slides relative to the ring. This causes the lubricating grease formed between the ring and the blocking ring to be scraped off by the oil scraper and then guided by the oil guide into the oil collection box. This prevents the lubricating grease from accumulating unevenly in the space formed by the ring and the blocking ring, which could lead to uneven force on the wind turbine main shaft and cause eccentricity. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the structure of a device for collecting waste grease from the main shaft of a wind turbine according to the present invention;

[0016] Figure 2 This is a schematic diagram of the assembly of the sleeve and the oil collection box in a device for collecting waste grease from the main shaft of a wind turbine according to the present invention.

[0017] Figure 3 This is an assembly diagram of the connecting plate, L-shaped plate, vertical plate, ring and blocking ring in a device for collecting waste grease from the main shaft of a wind turbine according to this utility model.

[0018] Figure 4 This is an assembly diagram of the L-shaped plate, oil scraper, oil guide, vertical plate, and connecting plate in a device for collecting waste grease from the main shaft of a wind turbine according to this utility model.

[0019] In the diagram: 1-Wind turbine main shaft, 2-Bearing housing, 3-Blocking ring, 4-Pipe sleeve, 5-Oil collection box, 6-Support, 7-Screw, 8-Ring ring, 9-Oil scraper cover, 10-Oil guide cover, 11-Slanted plate, 12-Vertical plate, 13-Ear plate, 14-Oblong opening, 15-L-shaped plate, 16-Connecting plate, 17-Strip opening. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a device for collecting waste grease from the main shaft of a wind turbine, including a wind turbine main shaft 1, a bearing seat 2 rotatably connected to the wind turbine main shaft 1, an oil collection box 5 located directly below the bearing seat 2, two tube sleeves 4 installed at the bottom of the oil collection box 5, the lower ends of the tube sleeves 4 penetrating the oil collection box 5, and two supports 6 installed at the bottom of the bearing seat 2 by screws 7, the lower ends of the supports 6 penetrating the tube sleeves 4. The design of the tube sleeves 4 facilitates the penetration of the supports 6 into the oil collection box 5 without affecting the collection of lubricating grease by the oil collection box 5.

[0022] See Figures 1-3The bearing housing 2 has blocking rings 3 on both sides along the length of the wind turbine main shaft 1. The blocking rings 3 are sleeved on the wind turbine main shaft 1 and connected and fixed to it. A ring 8 is installed at the edge of the opposite face of each of the two blocking rings 3. The structure formed by the ring 8 and the blocking rings 3 is positioned directly above the oil collection box 5. The blocking rings 3 on both sides of the bearing housing 2 are fixed to the wind turbine main shaft 1, forming a lateral barrier that intercepts grease that diffuses axially along the wind turbine main shaft 1 within the ring 8, concentrating the grease in a small area on both sides of the bearing housing 2. The ring 8 and the blocking rings 3 form an annular groove. Using the centrifugal force generated by the rotation of the main shaft, the radially ejected grease is guided directly above the oil collection box 5, effectively preventing grease from dripping onto the outside of the oil collection box 5 and significantly improving the collection efficiency of waste grease.

[0023] See Figures 1-4 A connecting plate 16 is installed in the lower part of the oil collection box 5, between two supports 6. The connecting plate 16 is directly below the bearing seat 2. L-shaped plates 15 are installed on both sides of the connecting plate 16 facing the supports 6. Ear plates 13 are fixedly connected to the upper end of the L-shaped plates 15. The ear plates 13 and L-shaped plates 15 are integrally formed. The vertical parts of the ear plates 13 and L-shaped plates 15 are arranged perpendicular to each other. The ear plates 13 are set between the supports 6 and the bearing seat 2. The upper surface of the ear plates 13 has a through hole for inserting screws 7. One end of the screw 7 passes through the bearing seat 2 and the through hole and is threaded to the support 6. This achieves the goal of using screws 7 to restrict the relative position of the supports 6 and the bearing seat 2, while also restricting the position of the structure formed by the ear plates 13 and L-shaped plates 15. This keeps the relative position of the connecting plate 16 and the oil collection box 5 unchanged, thereby reducing the amount of screws 7 used. A vertically arranged elongated oval opening 14 is opened on the vertical part of the L-shaped plate 15 to reduce the amount of material used in the production of the L-shaped plate 15.

[0024] See Figures 1-4Vertical plates 12 are installed at both ends of the connecting plate 16. Two symmetrical slots 17 are opened on the upper surface of the connecting plate 16, allowing the lower ends of the vertical plates 12 to be installed within the slots 17, thus improving the stability of the connection between the vertical plates 12 and the connecting plate 16. An oil guide cover 10 is installed at the upper end of the vertical plate 12, and an oil scraper cover 9 is installed at the end of the oil guide cover 10 away from the vertical plate 12. Both the oil guide cover 10 and the oil scraper cover 9 have a "U"-shaped structure. The opening direction of the oil guide cover 10 and the opening direction of the oil scraper cover 9 are opposite to the rotation direction of the wind turbine main shaft 1. The lower arc-shaped portion of the oil scraper cover 9... The oil scraper 9 slides in contact with the inner wall of the ring 8, and the upper arc-shaped part of the oil guide 10 slides in contact with the wind turbine main shaft 1. An inclined plate 11 is installed at the lower arc-shaped part of the oil guide 10. The inclined plate 11 and the oil guide 10 together form a flow channel for lubricating grease. The structure formed by the oil scraper 9 and the oil guide 10 is inserted into the space formed by the ring 8 and the blocking ring 3. When the wind turbine main shaft 1 rotates, this structure slides relative to the ring 8, scraping away the lubricating grease between the ring 8 and the blocking ring 3, and guiding it into the oil collection box 5 through the oil guide 10. This design prevents uneven accumulation of lubricating grease in the space between the ring 8 and the blocking ring 3, avoiding uneven force on the wind turbine main shaft 1 and eccentricity caused by grease buildup.

[0025] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for collecting waste grease from the main shaft of a wind turbine generator, comprising a wind turbine main shaft (1), characterized in that: The wind turbine main shaft (1) is fitted with a bearing seat (2) that is rotatably connected to the wind turbine main shaft (1). An oil collection box (5) is provided directly below the bearing seat (2). Two tube sleeves (4) are installed at the bottom of the oil collection box (5). The lower end of the tube sleeves (4) passes through the oil collection box (5). Two supports (6) are installed at the bottom of the bearing seat (2) by screws (7). The lower end of the supports (6) passes through the tube sleeves (4). The bearing seat (2) is provided with blocking rings (3) on both sides along the length direction of the wind turbine main shaft (1). The blocking rings (3) are fitted on the wind turbine main shaft (1) and connected and fixed to the wind turbine main shaft (1). A ring (8) is installed at the edge of the opposite face of the two blocking rings (3). The structure formed by the ring (8) and the blocking ring (3) is set directly above the oil collection box (5). A cleaning part for cleaning the lubricating grease on the inner wall of the ring (8) is installed in the middle of the oil collection box (5).

2. The device for collecting waste grease from the main shaft of a wind turbine as described in claim 1, characterized in that: The cleaning component includes a connecting plate (16). The connecting plate (16) is installed in the lower part of the oil collection box (5) between two supports (6). The connecting plate (16) is located directly below the bearing seat (2). Vertical plates (12) are installed at both ends of the connecting plate (16). An oil guide cover (10) is installed at the upper end of the vertical plate (12). An oil scraper cover (9) is installed at the end of the oil guide cover (10) away from the vertical plate (12). Both the oil guide cover (10) and the oil scraper cover (9) are U-shaped structures. The opening direction of the oil guide cover (10) and the opening direction of the oil scraper cover (9) are opposite to the rotation direction of the wind turbine main shaft (1). The arc-shaped part at the lower end of the oil scraper cover (9) slides in contact with the inner wall of the ring (8). The arc-shaped part at the upper end of the oil scraper cover (9) slides in contact with the wind turbine main shaft (1).

3. The device for collecting waste grease from the main shaft of a wind turbine as described in claim 2, characterized in that: An inclined plate (11) is installed at the end of the arc-shaped part at the lower end of the oil guide cover (10), and the inclined plate (11) and the oil guide cover (10) together form a flow channel for lubricating grease.

4. The device for collecting waste grease from the main shaft of a wind turbine as described in claim 2, characterized in that: L-shaped plates (15) are installed on both sides of the connecting plate (16) facing the support (6). An ear plate (13) is fixedly connected to the upper end of the L-shaped plate (15). The ear plate (13) is located between the support (6) and the bearing seat (2). A through hole for inserting a screw (7) is opened on the upper surface of the ear plate (13). One end of the screw (7) passes through the bearing seat (2) and the through hole and is threadedly connected to the support (6).

5. The device for collecting waste grease from the main shaft of a wind turbine as described in claim 4, characterized in that: The ear plate (13) and the L-shaped plate (15) are integrally formed structures, and the vertical parts of the ear plate (13) and the L-shaped plate (15) are arranged perpendicular to each other.

6. The device for collecting waste grease from the main shaft of a wind turbine as described in claim 5, characterized in that: The vertical part of the L-shaped plate (15) has an elongated opening (14), which is arranged vertically.

7. The device for collecting waste grease from the main shaft of a wind turbine according to claim 2, characterized in that: The upper surface of the connecting plate (16) has two symmetrical slots (17), and the lower end of the vertical plate (12) is installed in the slots (17).

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