Waste oil collection device for maintenance of wind turbine yaw system

Abstract

This utility model relates to the field of wind power yaw technology and discloses a waste oil collection device for the maintenance of a wind turbine yaw system. The device includes a yaw main wheel and a track component. The track component includes a calibration plate with a fixing groove at the top. A fixing component is inserted into the inner wall of the fixing groove, and a snap-fit ​​component is fixed to the bottom of the inner wall of the fixing groove. A snap-fit ​​groove is formed at the bottom of the fixing component, and the inner wall of the snap-fit ​​groove is snap-fitted to the surface of the snap-fit ​​component. A sloping shovel is fixed to the side of the fixing component away from the calibration plate, and a backhoe is fixed to the side of the sloping shovel closer to the bottom of the calibration plate. This utility model secures the fixing component to the fixing groove of the calibration plate, ensuring that the bottom of the sloping shovel and the backhoe are tightly fitted to the top of the calibration plate. Thus, during the forward rotation of the yaw main wheel, the sludge on the inner wall of the yaw main wheel is scooped up by the sloping shovel, and the backhoe similarly scoops up the sludge during the reverse rotation. Workers only need to clean the sloping shovel and backhoe periodically.

Description

Technical Field

[0001] This utility model belongs to the field of wind power yaw technology, and specifically relates to a waste oil collection device for the maintenance of wind turbine yaw systems. Background Technology

[0002] The yaw system of a wind turbine is a device that keeps the wind turbine facing the prevailing wind direction. It is an essential component of a horizontal axis wind turbine. Components such as yaw bearings, yaw drive devices, yaw brakes, yaw counters, cable protection devices, and yaw hydraulic circuits often require grease lubrication. As the equipment operates for a long time, the grease gradually ages and mixes with other impurities to form sludge.

[0003] In the current technology, the maintenance of the yaw system of wind turbines usually involves cleaning the sludge and waste lubricant on the surface of the main gear by manual scraping or using a simple container. However, the operators have to work at height in a narrow space, which is not only inefficient, but also difficult to completely remove stubborn sludge and carbon deposits, especially those attached to the top of the gear. The remaining oil stains will accelerate gear wear, affect yaw accuracy, and even cause equipment failure.

[0004] Secondly, existing collection tools often lack reliable fixing methods and rely on manual hand-holding or temporary placement. During the trial operation of the yaw system or sudden rotation, the tools are prone to displacement, falling off, or even getting caught in the gear transmission parts, causing equipment shutdown or safety accidents. At the same time, it is difficult to achieve stable collection results under bidirectional working conditions.

[0005] In addition, most traditional collection devices are single-sided operation structures, which cannot adapt to the working conditions of the yaw system rotating in both directions. During the cleaning process, it is often necessary to stop the machine to adjust the tool position, which seriously affects maintenance efficiency.

[0006] The existing technology lacks a dedicated waste oil collection tool that can be tightly installed near the gear track, can adapt to bidirectional rotation, and is easy to disassemble, which cannot meet the increasingly stringent requirements of wind farms for efficient, safe and environmentally friendly maintenance. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing a waste oil collection device for the maintenance of wind turbine yaw systems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a waste oil collection device for the maintenance of a wind turbine yaw system, comprising a yaw main wheel and a track component. The track component includes a calibration plate, a fixing groove is provided on the top of the calibration plate, a fixing member is inserted into the inner wall of the fixing groove, a buckle is fixed at the bottom of the inner wall of the fixing groove, a buckle groove is provided at the bottom of the fixing member, the inner wall of the buckle groove is buckled and fixed to the surface of the buckle, a sloping shovel is fixed on the side of the fixing member away from the calibration plate, and a backhoe is fixed on the side of the sloping shovel near the bottom end of the calibration plate.

[0009] Preferably, the inclined surface of the shovel is provided with a plurality of anti-slip grooves arranged in a linear array, and the grooves are oriented towards the fixing component.

[0010] Preferably, the inclined surface of the shovel is provided with an anti-falling arc groove, and the height difference between the deepest point of the center of the anti-falling arc groove and the highest point of the edge of the anti-falling arc groove is not less than two centimeters.

[0011] Preferably, a temporary storage groove is provided on the inclined surface of the shovel near the higher part of the fixing member.

[0012] Preferably, the top of the end of the backhoe component facing the precision calibration plate is provided as a backhoe slope, the middle of the top of the backhoe component is provided as a groove, and the inner corner of the fixing point between the backhoe component and the slope shovel component is provided as a stable rounded corner.

[0013] Preferably, the inclined shovel has an L-shaped groove on the side near the fixing member, and an L-shaped plate is slidably connected to the inner wall of the L-shaped groove. The surface of the L-shaped plate and the surface of the fixing member have corresponding threaded grooves.

[0014] Preferably, both ends of the fastener are provided with pry grooves, and the depth of the pry grooves is not less than three centimeters.

[0015] Preferably, the backhoe component has an adhesive groove at the bottom near the inclined shovel component, and a rough pad is fixed to the inner wall of the adhesive groove.

[0016] In summary, this utility model has the following beneficial effects:

[0017] 1. This utility model uses a fastener to fix the fastener in the fixing groove of the calibration plate, so that the bottom of the inclined shovel and the bottom of the backhoe are tightly attached to the top of the calibration plate. Thus, during the forward rotation of the yaw main wheel, the sludge on the inner wall of the yaw main wheel is scooped up by the inclined shovel to form a sludge ball or roll up and moves upward along the inclined shovel. The anti-slip groove increases the friction between the sludge and the surface of the inclined shovel, and the anti-fall groove keeps the sludge in the center to prevent it from falling due to vibration. When there is a lot of sludge and it continues to move upward along the inclined shovel, it will eventually fall into the temporary storage groove for collection and temporary storage. The backhoe picks up the sludge in the same way when the yaw main wheel reverses. The staff only needs to clean the inclined shovel and the backhoe periodically.

[0018] 2. This utility model utilizes a backhoe component to scoop up sludge during reverse rotation. The inclined surface of the backhoe increases the sharp angle of contact between the backhoe component and the top of the yaw main wheel, facilitating the scooping of the sludge. Simultaneously, the sludge moves along the inclined surface and ultimately falls into the groove, preventing it from leaving. Both the inclined surface and the groove can be fitted with anti-fall-arc grooves to further prevent sludge from leaving, and the stabilizing rounded corners enhance the fixing effect between the inclined shoe component and the backhoe component. In this way, the yaw main wheel can collect waste grease and lubricating oil during both forward and reverse rotation. Furthermore, due to the single... A single module consisting of a fixed component, a shovel, and a backhoe can collect waste oil for both forward and reverse rotation. Operators can adjust the number of fixed components installed on the ends or surface of the calibration plate according to the actual usage scenario. For western power generation scenarios with minimal wind direction changes, the yaw system rotates less frequently, resulting in less heat and debris generated by friction, and consequently less waste sludge. Therefore, fewer fixed components can be installed, either on one side or at intervals. For coastal power generation scenarios with frequent wind direction changes, operators can install more fixed components, shovels, and backhoes on the calibration plate.

[0019] 3. This utility model provides a further fixing method for the fastener by opening threaded grooves at corresponding locations on the L-shaped plate, the fastener, and the calibration plate. After the worker fastens the fastener, the L-shaped plate can be inserted into the L-shaped groove, and then the bolts can be threaded to connect the L-shaped plate, the fastener, and the calibration plate to the threaded grooves, thus fixing the three together and further increasing the fixing effect. At the same time, since both the fastener and the L-shaped plate have threaded grooves, when different models of calibration plates only have blind grooves on their surfaces, they can also be fixed by threading on one side. When the calibration plate has no threaded grooves, bolts with rubber pads at the ends can be directly screwed into the threaded holes of the fastener and the L-shaped plate to pressure fix the calibration plate, which greatly improves the applicability and the fixing effect.

[0020] 4. This utility model uses a rough pad to scrape the sludge on the surface of the yaw main wheel, which is dry in the western region and has formed a clump of sludge, so that it loses its dry state and forms a gap between the sludge and the inner wall of the yaw main wheel, which facilitates subsequent scraping and improves the applicability of the equipment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a sectional view of the inclined shovel component of this utility model;

[0023] Figure 3 This is a schematic diagram of the precision calibration plate of this utility model;

[0024] Figure 4 This is a schematic diagram of the backhoe component of this utility model;

[0025] Figure 5 This is a schematic diagram of the stable rounded corners of this utility model;

[0026] Figure 6 This is a schematic diagram of the L-shaped plate of this utility model;

[0027] Figure 7 This is an exploded view of the buckle component of this utility model.

[0028] Figure label:

[0029] 1. Yaw main wheel; 101. Rail components; 102. Precision calibration plate;

[0030] 2. Fasteners; 201. Angled shovel; 202. Backhoe; 203. Fixing groove; 204. Buckle; 205. Buckle groove;

[0031] 3. Backhoe bevel; 301. Groove; 302. Reinforcing rounded corner;

[0032] 4. Rough pad;

[0033] 5. L-shaped groove; 501. L-shaped plate;

[0034] 6. Anti-slip grooves;

[0035] 7. Prying groove;

[0036] 8. Anti-arc groove;

[0037] 9. Temporary storage slot. Detailed Implementation

[0038] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0039] The specific embodiments of this utility model are described below with reference to the accompanying drawings:

[0040] Example 1:

[0041] refer to Figures 1-7A waste oil collection device for the maintenance of a wind turbine yaw system includes a yaw main wheel 1 and a track component 101. The track component 101 includes a calibration plate 102. A fixing groove 203 is formed on the top of the calibration plate 102. A fixing component 2 is slidably connected to the inner wall of the fixing groove 203. A buckle component 204 is fixed to the bottom of the inner wall of the fixing groove 203. A buckle groove 205 is formed at the bottom of the fixing component 2. The inner wall of the buckle groove 205 is buckled and fixed to the surface of the buckle component 204. A sloping shovel component 201 is fixed to the side of the fixing component 2 away from the calibration plate 102. A backhoe component 202 is fixed to the side of the sloping shovel component 201 near the bottom of the calibration plate 102. Multiple anti-slip grooves 6 are linearly arrayed on the sloping surface of the shovel component 201. The grooves of the anti-slip grooves 6 face the fixing component 2. The inclined shovel 201 has an anti-falling arc groove 8 on its inclined surface, and the height difference between the deepest point of the center of the anti-falling arc groove 8 and the highest point of its edge is not less than two centimeters. A temporary storage groove 9 is provided on the inclined surface of the inclined shovel 201 near the higher part of the fixing member 2.

[0042] Specifically, by fastening the fixing member 2 to the fixing groove 203 of the calibration plate 102, the bottom of the inclined shovel 201 and the bottom of the backhoe 202 are tightly attached to the top of the calibration plate 102. Thus, during the forward rotation of the yaw main wheel 1, the sludge on the inner wall of the yaw main wheel 1 is scooped up by the inclined shovel 201 to form a sludge ball or roll up, and moves upward along the inclined shovel 201. The anti-slip groove 6 increases the friction between the sludge and the surface of the inclined shovel 201, and the anti-fall groove 8 keeps the sludge in the center to prevent it from falling due to vibration. When there is a lot of sludge and it continues to move upward along the inclined shovel 201, it will eventually fall into the temporary storage groove 9 for collection and temporary storage. The backhoe 202 scoops up the sludge in the same way when the yaw main wheel 1 reverses. The staff only needs to clean the inclined shovel 201 and the backhoe 202 periodically.

[0043] The top of the end of the backhoe component 202 facing the precision plate 102 is set as a backhoe slope 3, the middle of the top of the backhoe component 202 is set as a groove 301, and the inner corner of the fixing point between the backhoe component 202 and the slope shovel component 201 is set as a stable rounded corner 302.

[0044] Specifically, the backhoe component 202 scoops up the sludge during reverse rotation. The backhoe ramp 3 increases the sharp angle at which the backhoe component 202 contacts the top of the yaw main wheel 1, facilitating the scooping of the sludge. Simultaneously, the sludge moves along the backhoe ramp 3 and eventually falls into the groove 301, preventing it from leaving. Both the backhoe ramp 3 and the groove 301 can be provided with anti-fall grooves 8 to further prevent the sludge from leaving, and the stabilizing rounded corner 302 increases the fixing effect between the ramp shovel component 201 and the backhoe component 202. In this way, the yaw main wheel 1 can collect waste grease and lubricating oil during both forward and reverse rotation; and because... A single fixing component 2, inclined shovel component 201, and backhoe component 202 module can collect waste oil for both forward and reverse rotation. The number of fixing components 2 installed on both ends or the surface of the calibration plate 102 can be adjusted according to the actual usage scenario. For western power generation scenarios with small wind direction changes, the yaw system rotates less frequently, resulting in less heat and debris generated by friction, and correspondingly less waste sludge. Fewer fixing components 2 can be installed, installed on one side, or at intervals. For coastal power generation scenarios with frequent wind direction changes, more fixing components 2, inclined shovel components 201, and backhoe components 202 can be installed on the calibration plate 102.

[0045] An L-shaped groove 5 is provided on the side of the inclined shovel 201 near the fixing part 2. An L-shaped plate 501 is slidably connected to the inner wall of the L-shaped groove 5. A threaded groove is provided on the surface of the L-shaped plate 501 corresponding to the surface of the fixing part 2.

[0046] Specifically, by opening threaded grooves at corresponding locations on the L-shaped plate 501, the fastener 2, and the calibration plate 102, a further fixing method is provided for the fastener 2. After the worker secures the fastener 2 with a clip, the L-shaped plate 501 can be inserted into the L-shaped groove 5, and then the bolts can be threaded to connect the L-shaped plate 501, the fastener 2, and the calibration plate 102, fixing the three together and further enhancing the fixing effect. At the same time, since both the fastener 2 and the L-shaped plate 501 have threaded grooves, when different models of calibration plates 102 only have blind grooves on their surfaces, they can also be fixed by threading on one side. When the calibration plate 102 has no threaded grooves, bolts with rubber pads at the ends can be directly screwed into the threaded holes of the fastener 2 and the L-shaped plate 501 to apply pressure to fix the calibration plate 102, greatly improving the applicability and fixing effect.

[0047] Both ends of the fastener 2 are provided with pry grooves 7, and the depth of the pry grooves 7 is not less than three centimeters.

[0048] Specifically, the pry groove 7 facilitates the application of force when workers need to remove the fastener 2. Since the pry groove 7 is deeper than three centimeters, workers can use tools such as screwdrivers to pry it up, thus improving the user experience.

[0049] The backhoe part 202 has an adhesive groove at the bottom near the inclined shovel part 201, and a rough pad 4 is fixed on the inner wall of the adhesive groove.

[0050] Specifically, the rough pad 4 scrapes the sludge on the surface of the yaw main wheel 1, which is dry in the western air and has formed a sludge layer, so that it loses its dry state and forms a gap between it and the inner wall of the yaw main wheel 1, which facilitates subsequent scraping and improves the applicability of the equipment.

[0051] Example 2:

[0052] refer to Figures 1-7 Based on the structure disclosed in this utility model, the staff applied the waste oil collection device for the yaw system maintenance of the wind turbine described in this utility model during the routine maintenance of a 1.5MW unit in a coastal wind farm.

[0053] Technicians precisely installed the calibration plate next to the yaw gear ring track inside the cabin at an altitude of 80 meters. Three sets of collection modules were quickly secured using snap-fit ​​fasteners and slots, each set spaced 1.2 meters apart and covering one-third of the gear ring's circumference. During installation, the fasteners were first pushed into the slots until a locking click was heard, then the L-shaped plate was inserted and tightened with M8 stainless steel bolts. When the yaw system rotates forward, the inclined shovel scrapes sludge from the inner wall of the gear ring at a 55-degree angle. Anti-slip grooves effectively increase sludge adhesion, and anti-arc grooves ensure the sludge moves along the central trajectory and is temporarily stored in a 50ml storage tank. During reverse rotation, the backhoe cuts into the sludge layer at a 48-degree angle, collecting the scraped sludge in the grooves. In a 72-hour continuous operation test, the device successfully collected approximately 1.5 kg of hardened sludge, and the rough pad effectively broke up the clumps of oil deposits formed in the coastal salt spray environment. During maintenance, technicians only need to insert a screwdriver into the pry groove and apply slight force to remove the module for cleaning. The entire process does not require contact with moving parts, reducing the maintenance time from 4 hours using traditional methods to 0.5 hours and avoiding the risks of working at height. In actual application, the wear rate of the yaw gear has been reduced by 40%, and the device has not shown any displacement or loosening under conditions of level 8 strong winds.

[0054] The working principle of this utility model is as follows: When the worker installs the fixture 2, the buckle groove 205 at the bottom of the fixture 2 is aligned with the buckle 204 in the fixing groove 203 of the precision calibration plate 102 and the buckle is fastened, so that the bottom of the inclined shovel 201 and the back shovel 202 are tightly attached to the top of the precision calibration plate 102.

[0055] When the yaw main wheel 1 rotates forward, the sludge on its inner wall is scooped up by the inclined shovel 201. The sludge moves upward along the inclined surface. The anti-slip groove 6 increases the friction, and the anti-falling arc groove 8 keeps the sludge in the center to prevent spillage. Finally, the sludge falls into the temporary storage tank 9 for temporary storage. When the yaw main wheel 1 rotates in reverse, the backhoe inclined surface 3 of the backhoe part 202 scoops up the sludge. The sludge flows along the inclined surface into the groove 301 for collection. The anti-falling arc groove 8 also prevents the sludge from falling off. For dry and clump-forming sludge, the rough pad 4 at the bottom of the backhoe part 202 is first scraped to loosen it.

[0056] After the L-shaped plate 501 is inserted into the L-shaped groove 5, it is connected to the threaded groove of the fixing part 2 and the precision plate 102 with bolts to enhance the fixation. When disassembly is required, the fixing part 2 can be pried up by inserting a tool into the pry groove 7. The device achieves efficient and stable collection of waste oil through a bidirectional collection mechanism of forward and reverse rotation.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waste oil collecting device for wind turbine yaw system maintenance, comprising a yaw main wheel (1) and a track piece (101), the track piece (101) comprising a fine adjustment plate (102), characterized in that: The top of the calibration plate (102) is provided with a fixing groove (203), and a fixing member (2) is inserted into the inner wall of the fixing groove (203). A buckle member (204) is fixed at the bottom of the inner wall of the fixing groove (203). A buckle groove (205) is provided at the bottom of the fixing member (2). The inner wall of the buckle groove (205) is buckled and fixed to the surface of the buckle member (204). A sloping shovel member (201) is fixed on the side of the fixing member (2) away from the calibration plate (102). A backhoe member (202) is fixed on the side of the sloping shovel member (201) near the bottom end of the calibration plate (102).

2. The wind turbine generator yaw system maintenance waste oil collection device according to claim 1, characterized in that: The inclined shovel (201) has multiple anti-slip grooves (6) arranged in a linear array on its inclined surface, and the grooves (6) are oriented towards the fixing member (2).

3. The wind turbine generator yaw system maintenance waste oil collection device according to claim 1, characterized in that: The inclined shovel (201) has an anti-falling arc groove (8) on its inclined surface. The height difference between the deepest point of the center of the anti-falling arc groove (8) and the highest point of the edge of the anti-falling arc groove (8) is not less than two centimeters.

4. The wind turbine generator yaw system maintenance waste oil collection device according to claim 1, characterized in that: The inclined shovel (201) has a temporary storage groove (9) at a higher part of its inclined surface near the fixing member (2).

5. The wind turbine generator yaw system maintenance waste oil collection device according to claim 1, characterized in that: The top of the end of the backhoe part (202) facing the precision plate (102) is set as a backhoe slope (3), the middle of the top of the backhoe part (202) is set as a groove (301), and the inner corner of the fixed point between the backhoe part (202) and the slope shovel part (201) is set as a stable rounded corner (302).

6. The wind turbine generator yaw system maintenance waste oil collection device according to claim 1, characterized in that: The inclined shovel (201) has an L-shaped groove (5) on the side near the fixing member (2). An L-shaped plate (501) is slidably connected to the inner wall of the L-shaped groove (5). The surface of the L-shaped plate (501) and the surface of the fixing member (2) have threaded grooves corresponding to each other.

7. The waste oil collection device for wind turbine yaw system maintenance according to claim 1, characterized in that: Both ends of the fastener (2) are provided with pry grooves (7), and the depth of the pry grooves (7) is not less than three centimeters.

8. The wind turbine generator yaw system maintenance waste oil collection device according to claim 1, characterized in that: The backhoe part (202) has an adhesive groove at the bottom near the inclined shovel part (201), and a rough pad (4) is fixed on the inner wall of the adhesive groove.

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