A wind power main shaft oil injection device

Abstract

The utility model relates to wind power main shaft oil injection technical field, and disclose a kind of wind power main shaft oil injection device, including fan casing, bearing is equipped in the fan casing, the inner ring inside of bearing is equipped with main shaft body, the circumferential outer wall of fan casing is fixedly connected with oil storage box, the inner wall of one side of fan casing is fixedly connected with oil injection box, connecting pipe is equipped between the oil injection box and oil storage box to make both intercommunication, the circumferential outer wall of connecting pipe is equipped with solenoid valve, the bottom of oil injection box is equipped with the oil injection pipe that carries out oil injection to bearing ball, the inner wall of multiple side of oil injection box is slidably connected with piston disc. The utility model is equipped with the pipe and rotating plate on the pipe on the piston disc, can extrude the oil in lower half cavity and smear on bearing in the process that piston disc moves downward, extrude the oil in upper half cavity to lower half cavity in the process that moves upward, realize the automatic input of oil, need not manual operation.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine main shaft lubrication technology, and more specifically to a wind turbine main shaft lubrication device. Background Technology

[0002] Wind turbine generator sets are key equipment for realizing renewable energy conversion. The core component, the main shaft bearing, undertakes the core functions of transmitting huge torque and supporting the weight of the impeller system. The long-term, stable and reliable operation of the main shaft bearing is crucial to the power generation efficiency and service life of the whole machine, and good lubrication is one of the key factors to ensure the performance of the main shaft bearing.

[0003] A search revealed a Chinese patent with publication number CN221054755U, which discloses a wind turbine main shaft oiling device. This device injects oil into the outer edge of the inner ring through an oiling hole on the outer edge of the outer ring. It has the advantages of reducing the workload of workers and saving manpower. However, the storage tank is small in size, and after the lubricating oil inside is exhausted, new lubricating oil needs to be added manually. Repeating this process multiple times is cumbersome and reduces the efficiency of oiling. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a wind turbine main shaft oil injection device to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a wind turbine main shaft oil injection device, including a wind turbine housing, a bearing inside the wind turbine housing, a main shaft body inside the inner ring of the bearing, an oil storage box fixedly connected to the outer circumference of the wind turbine housing, an oil injection box fixedly connected to the inner wall of one side of the wind turbine housing, a connecting pipe between the oil injection box and the oil storage box to connect them, a solenoid valve on the outer circumference of the connecting pipe, and an oil injection pipe for injecting oil into the bearing balls at the bottom of the oil injection box. The oil injection box has multiple sides. A piston disc is slidably connected to the inner wall. An electric push rod that causes the piston disc to slide up and down is fixedly connected to the top inner wall of the oil filling box. A circular tube is provided through the piston disc. Two symmetrical fixed blocks are fixedly connected to the bottom end of the circular tube. A rotating rod is rotatably connected between the two fixed blocks. A rotating plate that closes the bottom end of the circular tube is fixedly connected to the outer circumference of the rotating rod. A torsion spring is fixedly connected between the outer circumference of the rotating rod and the fixed blocks. An oil scraping assembly that scrapes the discharged oil evenly is provided on one side inner wall of the blower housing.

[0006] As a further embodiment of this utility model, the oil scraping assembly includes a block fixedly connected to the inner wall of one side of the fan housing, and a slider is provided on one side of the block through an adaptive component, and an inclined plate is fixedly connected to the lower surface of the slider.

[0007] As a further embodiment of this utility model, the adaptive component includes two symmetrical limiting grooves formed on one side of the slider, and limiting rods are slidably formed in both limiting grooves, with one end of each limiting rod fixed to one side of the block.

[0008] As a further embodiment of this utility model, each of the two limiting grooves is fixedly connected to a spring at one end near the block, and the other end of the spring is fixed to the outer circumferential wall of the limiting slide rod.

[0009] As a further embodiment of this invention, a silicone plate is detachably bonded to one vertical side of the inclined plate near the bearing, and one side of the silicone plate is in contact with the bearing.

[0010] As a further embodiment of this utility model, the bottom end of the oil injection pipe is inserted obliquely into the angle formed by the inclined plate and the bearing.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model uses a circular tube and a rotating plate on the piston disc to automatically input oil by squeezing the oil in the lower half of the cylinder onto the bearing during the downward movement of the piston disc, and squeezing the oil in the upper half of the cylinder into the lower half of the cylinder during the upward movement of the piston disc, without the need for manual operation.

[0013] 2. This utility model uses an oil scraping component to spread the oil applied to the bearing evenly, so that the oil is evenly covered between the bearing balls and raceways and the contact surfaces such as the cage, ensuring that an appropriate amount of oil is present at the key friction pairs, which not only meets the lubrication requirements, but also avoids oil loss and waste caused by excessive oil supply.

[0014] 3. The present invention, through the adaptive component, can always keep the oil scraping component in close contact with the bearing, and can adjust the position and pressure of the oil scraping component in real time to keep it always in contact with the bearing surface, thus avoiding the interruption of the oil film due to momentary detachment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 For the present utility model Figure 1 A partially enlarged structural diagram.

[0017] Figure 3 This is a cross-sectional view of the oil filling box of this utility model.

[0018] Figure 4 This is an enlarged schematic diagram of the piston disc structure of this utility model.

[0019] Figure 5 This utility model Figure 4 A magnified structural diagram of part A.

[0020] Figure 6 This is an enlarged structural schematic diagram of the oil scraping component of this utility model.

[0021] The attached diagram is labeled as follows: 1. Fan housing; 2. Bearing; 3. Main shaft body; 4. Oil reservoir; 5. Oil filling box; 6. Oil filling pipe; 7. Connecting pipe; 8. Oil scraper assembly; 9. Electric push rod; 10. Piston disc; 11. Round tube; 12. Solenoid valve; 13. Slider; 14. Inclined plate; 15. Silicone plate; 16. Fixing block; 17. Rotating rod; 18. Rotating plate; 19. Torsion spring; 20. Limiting groove; 21. Limiting slide rod; 22. Spring. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figures 1-6 This utility model provides a wind turbine main shaft oil injection device, including a wind turbine housing 1, a bearing 2 inside the wind turbine housing 1, a main shaft body 3 inside the inner ring of the bearing 2, an oil storage box 4 fixedly connected to the outer circumference of the wind turbine housing 1 by bolts, an oil injection box 5 fixedly connected to the inner wall of one side of the wind turbine housing 1 by bolts, a connecting pipe 7 between the oil injection box 5 and the oil storage box 4 to connect the two, a solenoid valve 12 is provided on the outer circumference of the connecting pipe 7, and an oil injection pipe 6 is provided at the bottom of the oil injection box 5 for injecting oil into the bearing 2 balls.

[0024] A piston disc 10 is slidably connected to the inner walls of the oil filling box 5 on multiple sides. An electric push rod 9 that makes the piston disc 10 slide up and down is fixedly connected to the inner wall of the top of the oil filling box 5 by bolts. A round tube 11 is provided through the piston disc 10. Two symmetrical fixing blocks 16 are fixedly connected to the bottom end of the round tube 11 by bolts. A rotating rod 17 is rotatably connected between the two fixing blocks 16. A rotating plate 18 that closes the bottom end of the round tube 11 is welded to the outer circumference of the rotating rod 17. A torsion spring 19 is welded between the outer circumference of the rotating rod 17 and the fixing block 16. An oil scraping assembly 8 that scrapes the discharged oil evenly is provided on the inner wall of one side of the fan housing 1. The bottom end of the oil filling pipe 6 is inserted obliquely into the angle formed by the inclined plate 14 and the bearing 2.

[0025] When it is necessary to lubricate the balls of bearing 2, the electric push rod 9 is first activated to extend. During the extension of the electric push rod 9, the piston disc 10 is pushed down along the inner wall of the oil filling box 5, thereby pushing the oil in the lower half of the oil filling box 5 out along the oil filling pipe 6 to the balls of bearing 2.

[0026] Before the piston disc 10 moves downward, the solenoid valve 12 is opened. During the downward movement of the piston disc 10, the oil in the oil reservoir 4 is drawn into the upper cavity of the oil filling box 5 through the connecting pipe 7.

[0027] After the piston disc 10 moves to the bottom, the solenoid valve 12 is closed and the electric push rod 9 is activated to retract, so that the piston disc 10 slides upward along the inner wall of the oil injection box 5. During the upward sliding process, the oil in the upper half of the cavity will squeeze the rotating plate 18, thereby causing the rotating rod 17 to rotate, which in turn causes the bottom end of the round tube 11 to open and the oil in the upper half of the cavity to enter the lower half of the cavity.

[0028] By using the circular tube 11 and the rotating plate 18 on the circular tube 11 provided on the piston disc 10, the oil in the lower half of the cylinder can be squeezed and applied to the bearing 2 during the downward movement of the piston disc 10, and the oil in the upper half of the cylinder can be squeezed into the lower half of the cylinder during the upward movement, so as to realize the automatic input of oil without the need for manual operation.

[0029] In this utility model, the oil scraping component 8 includes a block that is fixedly connected to the inner wall of one side of the fan housing 1 by bolts. A slider 13 is provided on one side of the block by an adaptive component, and an inclined plate 14 is fixedly connected to the lower surface of the slider 13 by bolts.

[0030] The oil scraping component 8 can spread the oil applied to the bearing 2 evenly, so that the oil is evenly covered between the balls and raceways of the bearing 2 and the contact surfaces such as the cage. This ensures that an appropriate amount of oil is present at the key friction pairs, which not only meets the lubrication requirements, but also avoids oil churning loss and oil waste caused by excessive oil supply.

[0031] Further adaptive components include two symmetrical limiting slots 20 on one side of the slider 13, and two limiting rods 21 sliding in each limiting slot 20, with one end of each limiting rod 21 fixed to one side of the block.

[0032] The adaptive component ensures that the oil scraper assembly 8 is always in close contact with the bearing 2, and can adjust the position and pressure of the oil scraper assembly 8 in real time to keep it always in contact with the surface of the bearing 2, thus avoiding interruption of the oil film due to momentary detachment.

[0033] Furthermore, a silicone plate 15 is detachably bonded to one vertical side of the inclined plate 14 near the bearing 2, with one side of the silicone plate 15 in contact with the bearing 2.

[0034] Specifically, after the oil is injected onto the balls of bearing 2, during the operation of bearing 2, the oil will be evenly spread on the surface of bearing 2 due to the contact between the silicone plate 15 and bearing 2.

[0035] In order to keep the slider 13 sliding towards the bearing 2, springs 22 are welded to one end of each of the two limiting grooves 20 near the block, and the other end of the springs 22 is fixed to the outer circumferential wall of the limiting slide rod 21.

[0036] It should be noted that the solenoid valve 12, electric push rod 9, etc. are existing technologies, and those skilled in the art can set them according to actual needs, which will not be elaborated here.

[0037] The use of this utility model involves the following steps:

[0038] S1: When it is necessary to inject oil into the balls of bearing 2, first start the electric push rod 9 to extend. During the extension of the electric push rod 9, the piston disc 10 will be pushed down along the inner wall of the oil injection box 5, thereby pushing the oil in the lower half of the oil injection box 5 to be pushed out along the oil injection pipe 6 to the balls of bearing 2.

[0039] S2: Before the piston disc 10 moves downward, the solenoid valve 12 is opened. During the downward movement of the piston disc 10, the oil in the oil reservoir 4 is drawn into the upper half of the oil filling box 5 through the connecting pipe 7.

[0040] S3: After the piston disc 10 moves to the bottom, close the solenoid valve 12 and start the electric push rod 9 to retract, so that the piston disc 10 slides upward along the inner wall of the oil injection box 5. During the upward sliding process, the oil in the upper half cavity will squeeze the rotating plate 18, thereby causing the rotating rod 17 to rotate, and then the bottom end of the round tube 11 opens and the oil in the upper half cavity enters the lower half cavity.

[0041] S4: After the oil is injected into the balls of bearing 2, during the operation of bearing 2, the oil will be evenly spread on the surface of bearing 2 due to the contact between the silicone plate 15 and bearing 2.

[0042] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0043] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0044] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A wind turbine main shaft lubrication device, comprising a wind turbine housing (1), wherein a bearing (2) is provided inside the wind turbine housing (1), and a main shaft body (3) is provided inside the inner ring of the bearing (2), characterized in that: An oil storage box (4) is fixedly connected to the outer circumference of the fan housing (1). An oil injection box (5) is fixedly connected to the inner wall of one side of the fan housing (1). A connecting pipe (7) is provided between the oil injection box (5) and the oil storage box (4) to connect them. A solenoid valve (12) is provided on the outer circumference of the connecting pipe (7). An oil injection pipe (6) is provided at the bottom of the oil injection box (5) to inject oil into the bearing (2) balls. A piston disc (10) is slidably connected to the inner walls of the oil injection box (5) on multiple sides. A valve is fixedly connected to the inner wall of the top of the oil injection box (5) to move the piston disc (10) up and down. A sliding electric push rod (9) is provided, and a circular tube (11) is provided through the piston disc (10). Two symmetrical fixed blocks (16) are fixedly connected to the bottom end of the circular tube (11). A rotating rod (17) is rotatably connected between the two fixed blocks (16). A rotating plate (18) is fixedly connected to the outer circumference of the rotating rod (17) to close the bottom end of the circular tube (11). A torsion spring (19) is fixedly connected between the outer circumference of the rotating rod (17) and the fixed block (16). An oil scraping assembly (8) is provided on the inner wall of one side of the fan housing (1) to scrape the discharged oil evenly.

2. The wind turbine main shaft lubrication device according to claim 1, characterized in that: The oil scraping assembly (8) includes a block fixedly connected to the inner wall of one side of the fan housing (1). A slider (13) is provided on one side of the block through an adaptive component. An inclined plate (14) is fixedly connected to the lower surface of the slider (13).

3. The wind turbine main shaft lubrication device according to claim 2, characterized in that: The adaptive component includes two symmetrical limiting grooves (20) opened on one side of the slider (13), and a limiting rod (21) slides in both limiting grooves (20), with one end of each limiting rod (21) fixed to one side of the block.

4. The wind turbine main shaft lubrication device according to claim 3, characterized in that: Two limiting grooves (20) are fixedly connected to a spring (22) at one end near the block, and the other end of the spring (22) is fixed to the outer circumferential wall of the limiting slide rod (21).

5. A wind turbine main shaft lubrication device according to claim 2, characterized in that: A silicone plate (15) is detachably bonded to one vertical side of the inclined plate (14) near the bearing (2), and one side of the silicone plate (15) is in contact with the bearing (2).

6. The wind turbine main shaft lubrication device according to claim 1, characterized in that: The bottom end of the oil injection pipe (6) is inserted obliquely into the angle formed by the inclined plate (14) and the bearing (2).

Images