Oil stain collecting mechanism for yaw layer of wind turbine generator

Abstract

The utility model relates to the technical field of wind turbine generators, in particular to a wind turbine generator yaw layer oil stain collecting mechanism which comprises a tower drum, a flange is welded to the top end of the tower drum in a sleeved mode, a yaw bearing is installed on the top of the flange, a bottom plate is installed on the top of the yaw bearing, and the yaw bearing is divided into an outer shaft ring and an inner shaft ring. A plurality of first bolts are inserted between the outer shaft ring and the flange in a circular array mode, a plurality of second bolts are inserted between the bottom plate and the inner shaft ring in a circular array mode, teeth are arranged on the outer wall of the outer shaft ring, and driving mechanisms connected with the teeth on the outer wall of the outer shaft ring in a meshed mode are installed at the four corners of the top of the bottom plate. Grease at the outer shaft ring and the gear can be collected through the oil receiving ring and the oil receiving disc respectively, the grease collected by the oil receiving disc can flow into the oil receiving ring, and the oil scraping assembly is driven to push the grease collected in the oil receiving ring along with yawing rotation of the bottom plate, so that the grease smoothly enters a collecting pipe, and the oil collecting efficiency is improved. Therefore, the oil dirt on the yaw layer is collected.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a wind turbine yaw layer oil sludge collection mechanism. Background Technology

[0002] The yaw mechanism is an important component of a wind turbine generator set. It is mainly used to adjust the direction of the wind turbine so that it always faces the wind. Through precise wind direction tracking and a stable mechanical structure, it ensures that the wind turbine maintains the best wind-catching posture under complex wind conditions. It is an indispensable part of modern wind power generation technology.

[0003] In the existing wind turbine technology field, during long-term operation of the yaw system of a wind turbine, grease leakage may occur due to friction between the outer ring of the yaw bearing and the gears of the drive device. However, traditional oil collection mechanisms have low efficiency in collecting oil from the yaw layer. Because the gears of the drive device change position with the yaw angle, it is inconvenient to collect grease from the gears. During the gear repositioning process, the grease on its surface will drip onto the yaw platform surface, which can easily cause oil accumulation and increase the maintenance cost of the equipment. Therefore, this application proposes a wind turbine yaw layer oil collection mechanism. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a wind turbine yaw layer oil pollution collection mechanism to solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a wind turbine yaw layer oil collection mechanism, including a tower, a flange welded to the top of the tower, a yaw bearing installed on the top of the flange, and a base plate installed on the top of the yaw bearing. The yaw bearing is divided into an outer ring and an inner ring. Multiple first bolts are inserted through the outer ring and the flange in a circular array. Multiple second bolts are inserted through the base plate and the inner ring in a circular array. The outer wall of the outer ring is provided with teeth. A drive mechanism that meshes with the teeth of the outer ring is installed at each of the four corners of the top of the base plate. An oil receiving ring located below the outer ring is installed on the side wall of the flange. An oil receiving component connected to the oil receiving ring is installed at the bottom of each drive mechanism.

[0006] Optionally, the top of the oil receiving ring is provided with a collection groove, which is located directly below the outer teeth of the outer shaft ring. The bottom of the oil receiving ring is provided with four oil outlet pipes that communicate with the collection groove. A collection pipe is threaded at the bottom end of each oil outlet pipe. The thickness of the inner wall of the oil receiving ring gradually decreases from bottom to top.

[0007] Optionally, the drive mechanism includes a motor and a gear. The motor is installed at the corner of the top of the base plate, and the telescopic end of the motor passes through the base plate. The gear is installed at the output end of the motor, and the side wall of the gear is meshed with the teeth of the outer wall of the outer shaft ring.

[0008] Optionally, the oil receiving assembly includes an oil receiving pan, a connecting bearing, a rod shaft, and a fixing plate. The top end of the rod shaft is fixedly connected to the shaft center at the bottom of the gear. The oil receiving pan is located directly below the gear. The connecting bearing is installed at the center of the top of the oil receiving pan, and the inner ring of the connecting bearing is fixedly connected to the bottom end of the rod shaft. An opening is provided on the side of the oil receiving pan near the outer shaft ring, and the fixing plate is installed at the bottom of the opening end of the oil receiving pan.

[0009] Optionally, the open end of the oil receiving pan is located above the oil receiving ring, and the fixing plate is located inside the oil receiving ring. The fixing plate is set in an arc shape, and the center of the fixing plate and the center of the oil receiving ring are located on the same vertical axis. Multiple ball grooves are equidistantly opened on the outer side of the fixing plate, and a rotatable ball is provided in each ball groove. The part of each ball extending out of the ball groove contacts the outer ring of the inner wall of the oil receiving ring.

[0010] Optionally, an oil scraping assembly extending into the oil receiving ring is installed at the center of each of the four ends of the bottom of the base plate. The oil scraping assembly includes a connecting rod and a scraper. The top end of the connecting rod is connected to the bottom of the base plate, and the bottom end of the connecting rod extends into the oil receiving ring. The scraper is fixed to the bottom end of the connecting rod, and the bottom and sides of the scraper are in contact with the inner wall of the oil receiving ring.

[0011] Optionally, the bottom of the outer ring is at a higher level than the bottom of the inner ring, and the top of the outer ring is at a lower level than the top of the inner ring.

[0012] The beneficial effects of this utility model are:

[0013] By setting up the oil receiving ring and oil receiving pan, the grease leaking from the outer shaft collar and gear can be collected in a targeted manner. The grease collected by the oil receiving pan can also flow into the oil receiving ring, realizing comprehensive collection of oil stains and improving collection efficiency. During the operation of the drive mechanism to drive the base plate to rotate, the fixed plate in the oil receiving assembly contacts the inner wall of the oil receiving ring through the ball bearings. This ensures that the oil receiving pan rotates with the drive mechanism and reduces friction, making the oil receiving process more stable and reliable.

[0014] The oil outlet pipe at the bottom of the oil receiving ring works in conjunction with the collection pipe, allowing the collected grease to smoothly enter the collection pipe and preventing grease buildup in the oil receiving ring. When the base plate yaws and rotates, it can drive the scraper in the oil scraping assembly to push the grease in the oil receiving ring. The grease is transferred by the movement of the equipment itself, without the need for additional power, thus saving energy. Attached Figure Description

[0015] 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:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the tower, flange, yaw bearing and oil receiving ring of this utility model;

[0018] Figure 3 This is a structural schematic diagram of the tower, flange, and yaw bearing of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection between the flange and the oil receiving ring of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the base plate, oil scraping assembly and oil receiving ring of this utility model;

[0021] Figure 6 This is a top view of the yaw bearing, oil receiving ring, drive mechanism and oil receiving pan of this utility model.

[0022] Figure 7 This is a schematic diagram of the connection between the drive mechanism and the oil receiving component of this utility model;

[0023] Figure 8 This is a schematic diagram of the connection between the oil receiving tray and the connecting bearing of this utility model;

[0024] Figure 9 This is a schematic diagram of the connection between the oil receiving tray and the fixing plate of this utility model;

[0025] In the diagram: 1. Tower; 2. Flange; 3. Yaw bearing; 31. Outer shaft collar; 311. First bolt; 32. Inner shaft collar; 322. Second bolt; 4. Base plate; 5. Drive mechanism; 51. Motor; 52. Gear; 6. Oil receiving ring; 7. Oil scraper assembly; 71. Connecting rod; 72. Scraper; 8. Oil receiving assembly; 81. Oil receiving pan; 82. Connecting bearing; 83. Rod shaft; 84. Fixing plate; 85. Ball bearing; 9. Oil outlet pipe; 10. Collection pipe. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-9This utility model provides a technical solution: a wind turbine yaw layer oil collection mechanism, including a tower 1, a flange 2 welded to the top of the tower 1, a yaw bearing 3 installed on the top of the flange 2, and a base plate 4 installed on the top of the yaw bearing 3. The yaw bearing 3 is divided into an outer ring 31 and an inner ring 32. Multiple first bolts 311 are inserted into the outer ring 31 and the flange 2 in a circular array. Multiple second bolts 322 are inserted into the base plate 4 and the inner ring 32 in a circular array. The outer wall of the outer ring 31 is provided with teeth. A drive mechanism 5 is installed at each of the four corners of the top of the base plate 4 and is engaged with the teeth of the outer wall of the outer ring 31. An oil receiving ring 6 located below the outer ring 31 is installed on the side wall of the flange 2. An oil receiving component 8 connected to the oil receiving ring 6 is installed at the bottom of each drive mechanism 5.

[0028] like Figure 4 and Figure 5 As shown, the top of the oil receiving ring 6 is provided with a collection groove, which is located directly below the outer teeth of the outer shaft ring 31. The bottom of the oil receiving ring 6 is provided with four oil outlet pipes 9 that communicate with the collection groove. A collection pipe 10 is threaded onto the bottom end of each oil outlet pipe 9. The thickness of the inner wall of the oil receiving ring 6 gradually decreases from bottom to top. The oil receiving ring 6 can accurately receive the grease leaking from the teeth of the outer shaft ring 31. The oil outlet pipes 9 and the collection pipes 10 facilitate the discharge and collection of grease. The special structure of the inner wall of the oil receiving ring 6 helps the grease to smoothly converge into its interior.

[0029] like Figure 1 and Figure 6 As shown, the drive mechanism 5 includes a motor 51 and a gear 52. The motor 51 is installed at the corner of the top of the base plate 4, and the telescopic end of the motor 51 passes through the base plate 4. The gear 52 is installed at the output end of the motor 51, and the side wall of the gear 52 is meshed with the teeth of the outer wall of the outer shaft ring 31. The drive mechanism 5 adopts a combination of motor 51 and gear 52. The motor 51 provides power, and the gear 52 meshes with the teeth of the outer wall of the outer shaft ring 31, which ensures the power transmission of yaw motion, so that the base plate 4 can yaw and rotate accurately and stably.

[0030] like Figure 7 , Figure 8 and Figure 9As shown, the oil receiving assembly 8 includes an oil receiving tray 81, a connecting bearing 82, a rod shaft 83, and a fixing plate 84. The top end of the rod shaft 83 is fixedly connected to the shaft center at the bottom of the gear 52. The oil receiving tray 81 is located directly below the gear 52. The connecting bearing 82 is installed at the center of the top of the oil receiving tray 81, and the inner ring of the connecting bearing 82 is fixedly connected to the bottom end of the rod shaft 83. An opening is provided on the side of the oil receiving tray 81 near the outer shaft ring 31. The fixing plate 84 is installed at the bottom of the opening end of the oil receiving tray 81. The cooperation of the rod shaft 83, the connecting bearing 82, the oil receiving tray 81, and the fixing plate 84 in the oil receiving assembly 8 allows the oil receiving tray 81 to be suspended at the bottom of the gear 52 and not to rotate with the gear 52, but to move with the change of position of the gear 52. The diameter of the oil receiving tray 81 is larger than the size of the gear 52, so it can accurately collect the grease dripping from the gear 52.

[0031] like Figure 7 , Figure 8 and Figure 9 As shown, the open end of the oil receiving tray 81 is located above the oil receiving ring 6, and the fixing plate 84 is located inside the oil receiving ring 6. The fixing plate 84 is arc-shaped, and the center of the fixing plate 84 and the center of the oil receiving ring 6 are on the same vertical axis. Multiple ball grooves are equidistantly opened on the outer side of the fixing plate 84. A rotatable ball 85 is provided in each ball groove. The part of each ball 85 that extends out of the ball groove contacts the outer ring of the inner wall of the oil receiving ring 6. The position and shape design of the open end of the oil receiving tray 81 and the fixing plate 84 enable the grease collected by the oil receiving tray 81 to flow smoothly into the oil receiving ring 6. The setting of the ball 85 reduces the friction between the fixing plate 84 and the inner wall of the oil receiving ring 6, and improves the service life and operational stability of the oil receiving assembly 8.

[0032] like Figure 1 and Figure 5 As shown, an oil scraping assembly 7 extending into the oil receiving ring 6 is installed at the center of each of the four ends of the bottom of the base plate 4. The oil scraping assembly 7 includes a connecting rod 71 and a scraper 72. The top end of the connecting rod 71 is connected to the bottom of the base plate 4, and the bottom end of the connecting rod 71 extends into the oil receiving ring 6. The scraper 72 is fixed to the bottom end of the connecting rod 71, and the bottom and sides of the scraper 72 are in contact with the inner wall of the oil receiving ring 6. The design of the connecting rod 71 and the scraper 72 of the oil scraping assembly 7 allows the scraper 72 to fit tightly against the inner wall of the oil receiving ring 6. When the base plate 4 yaws and rotates, it effectively pushes the grease in the oil receiving ring 6 to flow to the oil outlet pipe 9, ensuring the smooth discharge of grease.

[0033] like Figure 2 and Figure 3As shown, the bottom of the outer shaft ring 31 is at a higher level than the bottom of the inner shaft ring 32, and the top of the outer shaft ring 31 is at a lower level than the top of the inner shaft ring 32. The height difference between the outer shaft ring 31 and the inner shaft ring 32 can prevent the bottom plate 4 from contacting the top of the outer shaft ring 31, and also prevent the bottom of the inner shaft ring 32 from contacting the top of the flange 2. This is beneficial for the installation and operation of the yaw system and improves the stability and reliability of the equipment.

[0034] 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 wind turbine yaw layer oil pollution collection mechanism, comprising a tower (1), characterized in that, A flange (2) is welded to the top of the tower (1). A yaw bearing (3) is installed on the top of the flange (2). A base plate (4) is installed on the top of the yaw bearing (3). The yaw bearing (3) is divided into an outer ring (31) and an inner ring (32). Multiple first bolts (311) are inserted into the outer ring (31) and the flange (2) in a circular array. Multiple second bolts (322) are inserted into the base plate (4) and the inner ring (32) in a circular array. The outer wall of the outer ring (31) is provided with teeth. A drive mechanism (5) that meshes with the teeth of the outer wall of the outer ring (31) is installed at the four corners of the top of the base plate (4). An oil receiving ring (6) located below the outer ring (31) is installed on the side wall of the flange (2). An oil receiving assembly (8) connected to the oil receiving ring (6) is installed at the bottom of each drive mechanism (5).

2. The wind turbine yaw layer oil pollution collection mechanism according to claim 1, characterized in that, The top of the oil receiving ring (6) is provided with a collection groove, and the collection groove is located directly below the outer teeth of the outer shaft ring (31). The bottom of the oil receiving ring (6) is provided with four oil outlet pipes (9) that communicate with the collection groove. A collection pipe (10) is threaded on the bottom end of each oil outlet pipe (9). The thickness of the inner wall of the oil receiving ring (6) gradually decreases from bottom to top.

3. The wind turbine yaw layer oil pollution collection mechanism according to claim 1, characterized in that, The drive mechanism (5) includes a motor (51) and a gear (52). The motor (51) is installed at the corner of the top of the base plate (4), and the telescopic end of the motor (51) passes through the base plate (4). The gear (52) is installed at the output end of the motor (51), and the side wall of the gear (52) is meshed with the teeth of the outer wall of the outer shaft ring (31).

4. The wind turbine yaw layer oil pollution collection mechanism according to claim 3, characterized in that, The oil receiving assembly (8) includes an oil receiving tray (81), a connecting bearing (82), a rod shaft (83), and a fixing plate (84). The top end of the rod shaft (83) is fixedly connected to the shaft center at the bottom of the gear (52). The oil receiving tray (81) is located directly below the gear (52). The connecting bearing (82) is installed at the center of the top of the oil receiving tray (81), and the inner ring of the connecting bearing (82) is fixedly connected to the bottom end of the rod shaft (83). An opening is provided on the side of the oil receiving tray (81) near the outer shaft ring (31). The fixing plate (84) is installed at the bottom of the opening end of the oil receiving tray (81).

5. The wind turbine yaw layer oil pollution collection mechanism according to claim 4, characterized in that, The open end of the oil receiving tray (81) is located above the oil receiving ring (6), and the fixing plate (84) is located inside the oil receiving ring (6). The fixing plate (84) is set in an arc shape, and the center of the fixing plate (84) and the center of the oil receiving ring (6) are located on the same vertical axis. Multiple ball grooves are equidistantly opened on the outer side of the fixing plate (84), and a rotatable ball (85) is provided in each ball groove. The part of each ball (85) extending out of the ball groove contacts the outer ring of the inner wall of the oil receiving ring (6).

6. The wind turbine yaw layer oil pollution collection mechanism according to claim 1, characterized in that, At the center of each of the four ends of the bottom of the base plate (4), an oil scraping assembly (7) extending into the oil receiving ring (6) is installed. The oil scraping assembly (7) includes a connecting rod (71) and a scraper (72). The top end of the connecting rod (71) is connected to the bottom of the base plate (4), and the bottom end of the connecting rod (71) extends into the oil receiving ring (6). The scraper (72) is fixed to the bottom end of the connecting rod (71), and the bottom and sides of the scraper (72) are in contact with the inner wall of the oil receiving ring (6).

7. The wind turbine yaw layer oil pollution collection mechanism according to claim 1, characterized in that, The bottom of the outer ring (31) is at a higher level than the bottom of the inner ring (32), and the top of the outer ring (31) is at a lower level than the top of the inner ring (32).

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