A wind turbine gearbox center hole oil collection device

Abstract

This utility model discloses an oil collection device for the center hole of a wind turbine gearbox, comprising a gearbox, a main shaft on the front surface of the gearbox, an annular groove on the front surface of the gearbox, a sealing ring slidably connected to the inner surface of the annular groove, a protective cover slidably connected to the inner surface of the annular groove, and a fixing buckle fixedly connected to the outer surface of the protective cover. By setting up the protective cover, the lubricating oil inside the gearbox can be prevented from flowing directly to the outside of the equipment through the gap at the connection between the gearbox and the main shaft, thus avoiding impact on external equipment. Furthermore, with the addition of a liquid inlet pipe, treatment box, delivery pipe, liquid inlet hole, collection hopper, and slot, leaked lubricating oil can be filtered and returned to the inside of the gearbox, thereby reducing lubricating oil loss and improving practicality. Simultaneously, with the addition of a snap-fit ​​assembly and slot, the filter screen can be easily disassembled, further enhancing the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to an oil collection device for the center hole of a wind turbine gearbox. Background Technology

[0002] The wind turbine gearbox is the core transmission component in a wind turbine generator set, connecting the wind turbine rotor and the generator. Essentially, it is a high-precision mechanical speed-changing system. In the energy conversion chain of wind power generation, the wind turbine rotor captures wind energy and rotates at a relatively low speed, while the generator needs to operate at a higher speed to achieve efficient power generation. The core function of the wind turbine gearbox is to compensate for this speed difference, converting the low-speed, high-torque mechanical energy transmitted by the wind turbine rotor into the high-speed, low-torque mechanical energy required by the generator. It serves as the power bridge ensuring stable power generation of the wind turbine generator set.

[0003] However, during the long-term high-load operation of wind turbine gearboxes, precision components such as internal gears and bearings rely on lubricating oil for lubrication, cooling, and rust prevention. The central hole area of ​​the gearbox (i.e., the mating part between the input shaft, output shaft, and gearbox body) is a key interface for power transmission. Due to factors such as continuous shaft rotation and aging and wear of seals, lubricating oil leakage is very likely to occur, which becomes an important hidden danger affecting the stable operation of the gearbox. Continuous leakage of lubricating oil will cause waste and affect the support and operation of external equipment. Utility Model Content

[0004] The purpose of this utility model is to provide an oil collection device for the center hole of a wind turbine gearbox, which can prevent the lubricating oil inside the gearbox from flowing directly out of the equipment through the gap at the connection between the gearbox and the main shaft, thereby avoiding impact on external equipment. It can also filter the leaked lubricating oil and return it to the inside of the gearbox, thereby reducing lubricating oil consumption and improving practicality. At the same time, the filter screen can be easily disassembled, thereby further improving the practicality of the device.

[0005] To achieve the above objectives, a wind turbine gearbox center hole oil collection device is provided, comprising:

[0006] A gearbox, wherein a main shaft is provided on the front surface of the gearbox, an annular groove is provided on the front surface of the gearbox, a sealing ring is slidably connected to the inner surface of the annular groove, a protective cover is slidably connected to the inner surface of the annular groove, a fixing buckle is fixedly connected to the outer surface of the protective cover, a first threaded hole is provided on the outer surface of the fixing buckle, a bolt is threadedly connected to the inner surface of the first threaded hole, a second threaded hole is provided on the front surface of the gearbox, an inlet pipe is fixedly connected to the inner surface of the second threaded hole, a treatment box is fixedly connected to the outer surface of the inlet pipe, an infusion pipe is fixedly connected to the inner surface of the treatment box, an inlet hole is provided on the front surface of the gearbox, a liquid collection hopper is fixedly connected inside the treatment box, a slot is provided on the inner surface of the treatment box, a filter screen is slidably connected to the inner surface of the slot, a baffle is fixedly connected to the front surface of the filter screen, a handle is fixedly connected to the front surface of the baffle, and a rubber ring is fixedly connected to the rear surface of the baffle.

[0007] A snap-fit ​​assembly includes a fixing box, an insert block, an inclined block, a slide rod, a limiting block, a spring, a trapezoidal block, a threaded rod, a circular block, an internal hexagonal bolt block, and a rubber ring. The inner surface of the fixing box is slidably connected to the insert block, the right surface of the insert block is fixedly connected to the inclined block, the inner surface of the inclined block is slidably connected to the slide rod, the lower end of the slide rod is fixedly connected to the limiting block, the upper surface of the inclined block is fixedly connected to the spring, the inner surface of the fixing box is slidably connected to the trapezoidal block, the inner surface of the trapezoidal block is threadedly connected to the threaded rod, the left end of the threaded rod is fixedly connected to the circular block, the right end of the threaded rod is fixedly connected to the internal hexagonal bolt block, and the outer surface of the internal hexagonal bolt block is fixedly connected to the rubber ring.

[0008] According to the aforementioned oil collection device for the center hole of a wind turbine gearbox, the lower surface of the baffle is provided with a slot, and the inner surface of the slot is adapted to the insert block.

[0009] According to the aforementioned wind turbine gearbox center hole oil collection device, the first threaded hole corresponds to the second threaded hole, and the inner surface of the second threaded hole is threadedly connected to the bolt.

[0010] According to the aforementioned wind turbine gearbox center hole oil collection device, the outer surface of the bolt is fixedly connected to the treatment box, and the inner surface of the liquid inlet hole is adapted to the liquid delivery pipe.

[0011] According to the aforementioned oil collection device for the center hole of a wind turbine gearbox, the front surface of the treatment box is in contact with the rubber ring.

[0012] According to the aforementioned wind turbine gearbox center hole oil collection device, the front surface of the treatment box is fixedly connected to the fixed box, and the outer surface of the inclined block is slidably connected to the trapezoidal block.

[0013] According to the aforementioned wind turbine gearbox center hole oil collection device, the upper end of the slide rod is fixedly connected to the fixed box, and the outer surface of the limiting block is slidably connected to the inclined block.

[0014] According to the aforementioned wind turbine gearbox center hole oil collection device, the outer surface of the threaded rod is rotatably connected to the fixed box, and the outer surface of the rubber ring is in contact with the fixed box.

[0015] The above-mentioned solution has the following beneficial effects:

[0016] By installing a protective cover, the lubricating oil inside the gearbox can be prevented from flowing directly to the outside of the equipment through the gap at the connection between the gearbox and the main shaft, thus avoiding any impact on external equipment. In addition, with the addition of structures such as an inlet pipe, treatment box, delivery pipe, inlet hole, collection hopper and slot, the leaked lubricating oil can be filtered and returned to the inside of the gearbox, thereby reducing lubricating oil consumption and improving practicality. At the same time, with the addition of structures such as snap-fit ​​components and slots, the filter screen can be easily removed, thereby further improving the practicality of the device.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the overall structure of the oil collection device for the center hole of a wind turbine gearbox according to the present invention;

[0020] Figure 2 This is an exploded view of the overall structure of the oil collection device for the center hole of a wind turbine gearbox according to the present invention;

[0021] Figure 3 This is a partial structural cross-sectional view of an oil collection device for the center hole of a wind turbine gearbox according to the present invention;

[0022] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0023] Figure 5 This is a cross-sectional view of the internal structure of an oil collection device for the center hole of a wind turbine gearbox according to this utility model.

[0024] Legend:

[0025] The components are as follows: 1. Gearbox; 2. Main shaft; 3. Annular groove; 4. Sealing ring; 5. Protective cover; 6. Fixing buckle; 7. First threaded hole; 8. Bolt; 9. Second threaded hole; 10. Inlet pipe; 11. Processing box; 12. Infusion pipe; 13. Inlet hole; 14. Collection hopper; 15. Slot; 16. Filter screen; 17. Baffle; 18. Handle; 19. Rubber ring; 20. Buckle assembly; 21. Fixing box; 22. Insert block; 23. Inclined block; 24. Slide rod; 25. Limiting block; 26. Spring; 27. Trapezoidal block; 28. Threaded rod; 29. ​​Circular block; 30. Hexagonal socket head cap screw block; 31. Rubber ring; 32. Slot. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-5 This utility model discloses an oil collection device for the center hole of a wind turbine gearbox, comprising: a gearbox 1, a main shaft 2 disposed on the front surface of the gearbox 1, an annular groove 3 disposed on the front surface of the gearbox 1, a sealing ring 4 slidably connected to the inner surface of the annular groove 3, a protective cover 5 slidably connected to the inner surface of the annular groove 3, a fixing buckle 6 fixedly connected to the outer surface of the protective cover 5, a first threaded hole 7 disposed on the outer surface of the fixing buckle 6, a bolt 8 threadedly connected to the inner surface of the first threaded hole 7, a second threaded hole 9 disposed on the front surface of the gearbox 1, an inlet pipe 10 fixedly connected to the inner surface of the second threaded hole 9, a treatment box 11 fixedly connected to the outer surface of the inlet pipe 10, and an infusion pipe 12 fixedly connected to the inner surface of the treatment box 11. The treatment box 11 has an inlet port 13 and a collection hopper 14 fixedly connected inside. The inner surface of the treatment box 11 has a slot 15, and a filter screen 16 is slidably connected to the inner surface of the slot 15. A baffle 17 is fixedly connected to the front surface of the filter screen 16, and a handle 18 is fixedly connected to the front surface of the baffle 17. A rubber ring 19 is fixedly connected to the rear surface of the baffle 17. A slot 32 is provided on the lower surface of the baffle 17. A first threaded hole 7 corresponds to a second threaded hole 9. The inner surface of the second threaded hole 9 is threadedly connected to a bolt 8 to facilitate the connection of the protective cover 5. The outer surface of the bolt 8 is fixedly connected to the treatment box 11. The inner surface of the inlet port 13 is adapted to the infusion tube 12. The front surface of the treatment box 11 is in contact with the rubber ring 19 to improve the sealing at that point.

[0028] The snap-fit ​​assembly 20 includes a fixing box 21, a plug 22, a beveled block 23, a slide rod 24, a limit block 25, a spring 26, a trapezoidal block 27, a threaded rod 28, a circular block 29, an internal hexagonal bolt block 30, and a rubber ring 31. The inner surface of the fixing box 21 is slidably connected to the plug 22, the right surface of the plug 22 is fixedly connected to the beveled block 23, the inner surface of the beveled block 23 is slidably connected to the slide rod 24, the lower end of the slide rod 24 is fixedly connected to the limit block 25, the upper surface of the beveled block 23 is fixedly connected to the spring 26, the inner surface of the fixing box 21 is slidably connected to the trapezoidal block 27, and the inner surface of the trapezoidal block 27 is slidably connected to the threaded rod 28. The threaded connection is as follows: the left end of the threaded rod 28 is fixedly connected to the circular block 29, the right end of the threaded rod 28 is fixedly connected to the internal hexagon bolt block 30, the outer surface of the internal hexagon bolt block 30 is fixedly connected to the rubber ring 31, the inner surface of the slot 32 is adapted to the insert block 22 to facilitate the fixing of the filter screen 16, the front surface of the treatment box 11 is fixedly connected to the fixed box 21, the outer surface of the inclined block 23 is slidably connected to the trapezoidal block 27, the upper end of the slide rod 24 is fixedly connected to the fixed box 21, the outer surface of the limiting block 25 is slidably connected to the inclined block 23, the outer surface of the threaded rod 28 is rotatably connected to the fixed box 21, and the outer surface of the rubber ring 31 is in contact with the fixed box 21.

[0029] Those skilled in the art should connect all electrical components in this case to their compatible external power supply via wires, and should select a suitable controller according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0030] Working principle: When lubricating oil leaks at the connection between gearbox 1 and spindle 2, the lubricating oil first falls into the interior of the protective cover 5, then through the inlet pipe 10 into the treatment box 11. After being filtered by the filter screen 16 to remove impurities, it flows back into the interior of gearbox 1 through the delivery pipe 12 and the inlet hole 13, thereby reducing lubricating oil consumption. When the filter screen 16 needs to be disassembled and cleaned, simply turn the hexagonal handle to rotate the internal hexagonal bolt block 30, driving the threaded rod 28 to rotate, which will move the trapezoidal block 27 to the right. At this time, under the action of the spring 26 in a compressed state, the inclined block 23 will move along the slide rod 24. The movable insert 22 moves downward, thereby disengaging the insert 22 from the inside of the slot 32, thus releasing the restriction on the filter screen 16. Then, the filter screen 16 can be pulled out along the inside of the slot 15 to complete the disassembly. After the filter screen 16 is cleaned, simply align the filter screen 16 with the slot 15 and insert it. When the insert 22 corresponds to the slot 32, use the hex wrench to rotate the internal hex bolt block 30 in the opposite direction, which will drive the trapezoidal block 27 to slide along the inclined surface on the inclined block 23, thereby inserting the insert 22 upward into the slot 32 and fixing it with the spring 26, thus achieving the limiting and fixing installation of the entire filter screen 16.

[0031] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An oil collection device for the center hole of a wind turbine gearbox, comprising: A gearbox (1) has a main shaft (2) on its front surface. The gearbox (1) is characterized by having an annular groove (3) on its front surface, a sealing ring (4) slidably connected to the inner surface of the annular groove (3), a protective cover (5) slidably connected to the inner surface of the annular groove (3), a fixing buckle (6) fixedly connected to the outer surface of the protective cover (5), a first threaded hole (7) on the outer surface of the fixing buckle (6), a bolt (8) threadedly connected to the inner surface of the first threaded hole (7), and a second threaded hole (9) on the front surface of the gearbox (1), with an inlet pipe fixedly connected to the inner surface of the second threaded hole (9). (10) A treatment box (11) is fixedly connected to the outer surface of the inlet pipe (10), an infusion pipe (12) is fixedly connected to the inner surface of the treatment box (11), an inlet hole (13) is provided on the front surface of the gearbox (1), a liquid collection hopper (14) is fixedly connected to the inside of the treatment box (11), a slot (15) is provided on the inner surface of the treatment box (11), a filter screen (16) is slidably connected to the inner surface of the slot (15), a baffle (17) is fixedly connected to the front surface of the filter screen (16), a handle (18) is fixedly connected to the front surface of the baffle (17), and a rubber ring (19) is fixedly connected to the rear surface of the baffle (17). The snap-fit ​​assembly (20) includes a fixing box (21), a plug (22), a beveled block (23), a slide rod (24), a limiting block (25), a spring (26), a trapezoidal block (27), a threaded rod (28), a circular block (29), an internal hexagonal bolt block (30), and a rubber ring (31). The inner surface of the fixing box (21) is slidably connected to the plug (22), the right surface of the plug (22) is fixedly connected to the beveled block (23), and the inner surface of the beveled block (23) is slidably connected to the slide rod (24). The lower end of the slide rod (24) is fixedly connected to the limiting block (25), the upper surface of the inclined block (23) is fixedly connected to the spring (26), the inner surface of the fixed box (21) is slidably connected to the trapezoidal block (27), the inner surface of the trapezoidal block (27) is threadedly connected to the threaded rod (28), the left end of the threaded rod (28) is fixedly connected to the circular block (29), the right end of the threaded rod (28) is fixedly connected to the internal hexagonal bolt block (30), and the outer surface of the internal hexagonal bolt block (30) is fixedly connected to the rubber ring (31).

2. The oil collection device for the center hole of a wind turbine gearbox according to claim 1, characterized in that, The lower surface of the baffle (17) is provided with a slot (32), and the inner surface of the slot (32) is adapted to the insert (22).

3. The oil collection device for the center hole of a wind turbine gearbox according to claim 1, characterized in that, The first threaded hole (7) corresponds to the second threaded hole (9), and the inner surface of the second threaded hole (9) is threadedly connected to the bolt (8).

4. The oil collection device for the center hole of a wind turbine gearbox according to claim 1, characterized in that, The outer surface of the bolt (8) is fixedly connected to the treatment box (11), and the inner surface of the liquid inlet (13) is adapted to the infusion tube (12).

5. The oil collection device for the center hole of a wind turbine gearbox according to claim 1, characterized in that, The front surface of the processing box (11) is in contact with the rubber ring (19).

6. The oil collection device for the center hole of a wind turbine gearbox according to claim 1, characterized in that, The front surface of the processing box (11) is fixedly connected to the fixed box (21), and the outer surface of the inclined block (23) is slidably connected to the trapezoidal block (27).

7. The oil collection device for the center hole of a wind turbine gearbox according to claim 1, characterized in that, The upper end of the slide bar (24) is fixedly connected to the fixed box (21), and the outer surface of the limiting block (25) is slidably connected to the inclined block (23).

8. The oil collection device for the center hole of a wind turbine gearbox according to claim 1, characterized in that, The outer surface of the threaded rod (28) is rotatably connected to the fixed box (21), and the outer surface of the rubber ring (31) is in contact with the fixed box (21).

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