Planet carrier of gearbox of light-weight wind driven generator

Abstract

The utility model discloses a light-weight planet carrier of a gearbox of a wind driven generator, which comprises a planet carrier body, the top of the planet carrier body is fixedly connected with a fixing block, the fixing block is provided with a groove, an insulating plate is arranged in the groove, the insulating plate is fixedly connected with the planet carrier body, and the planet carrier body is fixedly connected with the fixing block. The top end of the insulating plate is fixedly connected with a first contact piece and a second contact piece, the first contact piece and the second contact piece are in staggered contact, and the first contact piece and the second contact piece are both made of metal copper. Through the arrangement of the first contact piece and the second contact piece, when the humidity of air in the planet carrier is too high, water drops are condensed on the insulating plate, so that the first contact piece and the second contact piece are electrified through the water drops, the motor is started, the fan starts to rotate, heat dissipation treatment is carried out on the interior of the planet carrier, and drying treatment is carried out in cooperation with the drying plate at the same time; the failure rate caused by moisture corrosion of parts in the gearbox is reduced, and the stability of the wind driven generator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power gear boxes, in particular to a planetary frame of a lightweight wind power generator gear box. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. The gearbox in a wind turbine is an important mechanical component. Its main function is to transmit the power generated by the wind wheel under the action of wind to the generator and make it obtain a corresponding rotation speed. The planetary carrier of the gearbox is a structure that connects the planetary gears. Its main function is to support the planetary gears so that they can rotate around the sun gear and transmit power. In existing industrial designs, the planetary carrier of the wind turbine gearbox will be reduced in weight without affecting the overall performance of the planetary carrier, so as to achieve lightweight planetary carrier, improve work efficiency and reduce losses.

[0003] The planetary carrier of the existing lightweight wind turbine gearbox generally does not have a heat dissipation mechanism, and the heat and water vapor in the air enter the planetary carrier, causing moisture to be generated in the gearbox, affecting the performance of the lubricating oil and the durability of the gearbox components, and increasing the failure rate of the internal components of the gearbox due to moisture corrosion, thereby increasing the downtime caused by failures. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the planetary frame of the existing lightweight wind turbine gearbox generally has no heat dissipation mechanism, and heat and water vapor in the air enter the planetary frame, causing the gearbox to generate moisture, increasing the failure rate of the internal parts of the gearbox caused by moisture corrosion.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: a planetary carrier of a lightweight wind turbine gearbox, including a planetary carrier body, a fixed block fixedly connected to the top of the planetary carrier body, a groove is formed on the fixed block, an insulating plate is arranged in the groove, the insulating plate is fixedly connected to the planetary carrier body, a first contact piece and a second contact piece are fixedly connected to the top of the insulating plate, the first contact piece and the second contact piece are in staggered contact, and the first contact piece and the second contact piece are both made of metal copper.

[0006] Through the above technical solution, the internal parts of the planetary frame will generate heat when working. After a period of time, when the humidity of the air inside the planetary frame is too high, water droplets condense on the insulating plate, the first contact piece and the second contact piece are energized by the water droplets, and the motor starts.

[0007] The utility model is further configured such that an exhaust box is fixedly connected to one side of the planet carrier body, a drive motor is fixedly connected to one side of the exhaust box, an output end of the drive motor rotates and passes through the exhaust box, and a fan is fixedly connected to the output end of the drive motor.

[0008] Through the above technical solution, the motor drives the fan to work, speeding up the circulation of air inside the planetary carrier, thereby bringing out the heat inside the planetary carrier, effectively reducing the oil temperature of the gear box, avoiding the gear oil tank from shutting down due to over-temperature, and extending the overall service life of the gear box.

[0009] The utility model is further configured such that the driving motor is electrically connected to the first contact piece and the second contact piece, a one-way valve is provided on a side of the exhaust box away from the driving motor, and a plurality of air outlets are respectively provided on both sides of the exhaust box.

[0010] The utility model is further configured that the side of the planet carrier body away from the exhaust box is fixedly connected to an air intake box, a drying plate is arranged in the air intake box, a plurality of air intake holes are respectively opened on both sides of the air intake box, and a plurality of second lightweight through holes are opened on the planet carrier body.

[0011] Through the above technical solution, the second lightweight through hole and the first lightweight through hole are provided to lighten the overall mass of the planet carrier, thereby reducing the power generation loss of the wind turbine and improving the power generation efficiency of the wind turbine.

[0012] The utility model is further configured that a first through hole and a second through hole are respectively opened on both sides of the planetary carrier body, the first through hole and the second through hole are respectively opposite to the exhaust box and the air intake box, a plurality of pin shaft holes are opened on the top end of the planetary carrier body, and a plurality of first lightweight through holes are opened on the bottom end of the planetary carrier body.

[0013] The utility model is further configured as follows: two second mounting ears are fixedly connected to the fixing block, a top cover is arranged on the top of the fixing block, two first mounting ears are fixedly connected to the top cover, mounting holes are provided on the first mounting ears and the second mounting ears, and the fixing block and the top cover are fixedly connected by fasteners.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model provides an air intake box and an exhaust box on both sides of the planetary frame body. When the humidity of the air inside the planetary frame is too high, water droplets condense on the insulating plate, and the first contact piece and the second contact piece are energized by the water droplets, so that the motor starts and drives the fan to start rotating. The fan discharges the air in the planetary frame through the exhaust hole, and performs heat dissipation treatment on the internal parts of the planetary frame, effectively reducing the oil temperature of the gear box, avoiding the gear oil tank from shutting down due to overheating, and extending the overall service life of the gear box. When external air enters the planetary frame through the air intake hole, the drying plate in the air intake box dries the air, thereby dissipating the heat inside the planetary frame and maintaining the dry state inside the planetary frame, preventing the gear box from generating moisture under adverse climatic conditions, avoiding affecting the performance of the lubricating oil and the durability of the gear box parts, and reducing the failure rate of the internal parts of the gear box due to moisture corrosion, thereby improving the reliability and stability of the wind turbine and reducing the downtime caused by failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0017] Figure 2 It is a three-dimensional cross-sectional view of the exhaust box of the utility model;

[0018] Figure 3 This is a diagram of the internal structure of the fixed block of the utility model.

[0019] In the figure: 1. planetary carrier body; 2. fixing block; 3. groove; 4. insulating plate; 5. first contact piece; 6. second contact piece; 7. exhaust box; 8. drive motor; 9. fan; 10. one-way valve; 11. air intake box; 12. drying plate; 13. first lightweight through hole; 14. first through hole; 15. second through hole; 16. air outlet; 17. air intake; 18. top cover; 19. first mounting ear; 20. second mounting ear; 21. mounting hole; 22. fastener; 23. pin shaft hole; 24. second lightweight through hole. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] See also Figure 1 , Figure 2 and Figure 3The planetary frame of the lightweight wind turbine gearbox includes a planetary frame body 1, a fixed block 2 is fixedly connected to the top of the planetary frame body 1, a groove 3 is opened on the fixed block 2, an insulating plate 4 is arranged in the groove 3, the insulating plate 4 is fixedly connected to the planetary frame body 1, a first contact piece 5 and a second contact piece 6 are fixedly connected to the top of the insulating plate 4, the first contact piece 5 and the second contact piece 6 are in staggered contact, and the first contact piece 5 and the second contact piece 6 are both made of metal copper.

[0022] An exhaust box 7 is fixedly connected to one side of the planetary carrier body 1, and a drive motor 8 is fixedly connected to one side of the exhaust box 7. The output end of the drive motor 8 rotates and passes through the exhaust box 7, and a fan 9 is fixedly connected to the output end of the drive motor 8; the drive motor 8 is electrically connected to the first contact piece 5 and the second contact piece 6, and a one-way valve 10 is provided on the side of the exhaust box 7 away from the drive motor 8, and a number of air outlet holes 16 are respectively opened on both sides of the exhaust box 7; an air intake box 11 is fixedly connected to the side of the planetary carrier body 1 away from the exhaust box 7, a drying plate 12 is provided in the air intake box 11, and a number of air intake holes 17 are respectively opened on both sides of the air intake box 11, and a number of second lightweight through holes 24 are opened on the planetary carrier body 1.

[0023] A first through hole 14 and a second through hole 15 are respectively provided on both sides of the planet carrier body 1, and the first through hole 14 and the second through hole 15 are respectively opposite to the exhaust box 7 and the air intake box 11, a plurality of pin holes 23 are provided at the top end of the planet carrier body 1, and a plurality of first lightweight through holes 13 are provided at the bottom end of the planet carrier body 1; two second mounting ears 20 are fixedly connected to the fixing block 2, a top cover 18 is provided at the top end of the fixing block 2, two first mounting ears 19 are fixedly connected to the top cover 18, and mounting holes 21 are provided on the first mounting ears 19 and the second mounting ears 20, and the fixing block 2 and the top cover 18 are fixedly connected by fasteners 22.

[0024] When the utility model is in use, the top cover 18 is placed on the top of the fixing block 2, and the top cover 18 and the fixing block 2 are fixed by the fasteners 22 and the mounting holes 21. When the components in the planetary frame body 1 are working, hot air will be generated. When the humidity in the planetary frame body 1 is too high and water droplets condense on the insulating plate 4, the first contact piece 5 and the second contact piece 6 are conductively connected, and the drive motor 8 is started. The drive motor 8 drives the fan 9 to rotate, accelerates the air circulation in the planetary frame body 1, and performs heat dissipation treatment on the components in the planetary frame body 1, effectively reduces the oil temperature of the gear box, avoids the gear oil tank from shutting down due to over-temperature, and prolongs the overall service life of the gear box. The one-way valve 10 works to extract the air in the planetary frame body 1. At this time, negative pressure is formed in the planetary frame body 1, so that the air entering the planetary frame body 1 from the air inlet 17 is dried when passing through the drying plate 12, so that the air in the planetary frame body 1 is kept in a dry state, the failure rate of the internal components of the gear box due to moisture corrosion is reduced, and the reliability and stability of the wind turbine are improved.

[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A planet carrier of a lightweight wind turbine gearbox, comprising a planet carrier body (1), characterized in that: A fixing block (2) is fixedly connected to the top of the planet carrier body (1), a groove (3) is provided on the fixing block (2), an insulating plate (4) is arranged in the groove (3), the insulating plate (4) is fixedly connected to the planet carrier body (1), a first contact piece (5) and a second contact piece (6) are fixedly connected to the top of the insulating plate (4), the first contact piece (5) and the second contact piece (6) are in staggered contact, and the first contact piece (5) and the second contact piece (6) are both made of metal copper.

2. The planet carrier of the lightweight wind turbine gearbox according to claim 1, characterized in that: An exhaust box (7) is fixedly connected to one side of the planet carrier body (1), a drive motor (8) is fixedly connected to one side of the exhaust box (7), an output end of the drive motor (8) rotates and passes through the exhaust box (7), and a fan (9) is fixedly connected to the output end of the drive motor (8).

3. The planet carrier of the lightweight wind turbine gearbox according to claim 2, characterized in that: The drive motor (8) is electrically connected to the first contact piece (5) and the second contact piece (6); a one-way valve (10) is provided on a side of the exhaust box (7) away from the drive motor (8); and a plurality of air outlet holes (16) are respectively provided on both sides of the exhaust box (7).

4. The planet carrier of the lightweight wind turbine gearbox according to claim 1, characterized in that: An air intake box (11) is fixedly connected to a side of the planet carrier body (1) away from the exhaust box (7), a drying plate (12) is arranged in the air intake box (11), a plurality of air intake holes (17) are respectively provided on both sides of the air intake box (11), and a plurality of second lightweight through holes (24) are provided on the planet carrier body (1).

5. The planet carrier of the lightweight wind turbine gearbox according to claim 1, characterized in that: A first through hole (14) and a second through hole (15) are respectively provided on both sides of the planet carrier body (1), the first through hole (14) and the second through hole (15) are respectively opposite to the exhaust box (7) and the intake box (11), a plurality of pin holes (23) are provided on the top end of the planet carrier body (1), and a plurality of first lightweight through holes (13) are provided on the bottom end of the planet carrier body (1).

6. The planet carrier of the lightweight wind turbine gearbox according to claim 1, characterized in that: Two second mounting ears (20) are fixedly connected to the fixing block (2), a top cover (18) is arranged at the top of the fixing block (2), two first mounting ears (19) are fixedly connected to the top cover (18), the first mounting ears (19) and the second mounting ears (20) are both provided with mounting holes (21), and the fixing block (2) and the top cover (18) are fixedly connected via fasteners (22).

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