Wind power generation yaw device

Abstract

The utility model discloses a wind power generation yawing device, which belongs to the technical field of yawing devices, and comprises a wind generating set, in the use process of the wind generating set, when a gear in a yawing box needs to be lubricated, a second motor can work, so that the yawing device can be used for lubricating the gear in the yawing box. The piston rod is driven by the transmission mechanism to move longitudinally, when the piston rod moves downwards, lubricating oil in the lubricating oil tank can be pumped into the air pipe through the liquid inlet pipe by means of pressure difference, then the piston is driven to move upwards, and the lubricating oil in the air pipe is pushed to the connecting pipe through the liquid outlet pipe; the opening of the connecting pipe is located between the meshing teeth at the outer end of the first cylindrical gear, the meshing teeth between the first cylindrical gear and the second cylindrical gear can be lubricated, excessive abrasion between the first cylindrical gear and the second cylindrical gear is avoided, and it can be guaranteed that lubricating work is smoothly carried out by adding materials into the lubricating oil tank.

Description

Technical Field

[0001] The utility model relates to the technical field of yaw devices, and more specifically to a wind power generation yaw device. Background Art

[0002] A wind turbine generator includes a wind rotor and a generator. The wind rotor is composed of blades, a hub and reinforcements, etc. It has the functions of generating electricity by the blades rotating under wind force and rotating the generator head. The wind power supply is composed of a wind turbine generator set, a tower supporting the generator set, a battery charging controller, an inverter, an unloader, etc. When the wind turbine generator set is working, the power generation efficiency of the wind turbine generator set is usually affected by the change of wind direction. Most of the current wind turbine generator sets adjust the direction of the wind turbine generator set through a yaw device to ensure that the wind turbine generator set is facing the wind direction to achieve good power generation efficiency.

[0003] The current wind power generation yaw device, such as the "A Yaw Device for Wind Power Generation" proposed with patent number 202222870346.X, includes a support column, a yaw box is provided above the support column, a first gear is coaxially installed on the top of the support column, an annular groove is coaxially provided on the top of the first gear, and the annular groove passes through the side of the first gear through a through hole; a plurality of second gears arranged at equal intervals are provided on the side of the first gear, the second gears are meshed and connected with the first gear, the bottom of the second gear is rotatably connected to the yaw box through a rotating shaft, the top of the second gear is connected to a rotating rod through a reduction motor, and a driving motor is coaxially installed on the top of the rotating rod; when the utility model is used, the first gear and the second gear are intermittently lubricated by the toggle plate to toggle the strip plate and the elastic action of the torsion spring, which not only ensures the smoothness during yaw rotation and reduces the wear between gears, but also saves the use of lubricating fluid and reduces the frequency of adding lubricating fluid.

[0004] The existing wind power generation yaw device stores lubricating oil in a cylindrical box inside the yaw box. When the wind turbine generator set is yawed and rotated, a notch is opened by a toggle plate to allow the lubricating oil to drip onto the gears. Although this can lubricate the meshing of the gears and reduce abrasion, in actual use, the cylindrical box for storing the lubricating oil is located inside the yaw box, and the yaw box is not easy to disassemble and open. When the lubricating oil is used up, it is not easy to add it, resulting in limited effect of the lubricating device in the yaw box, affecting the overall service life of the yaw box and making it inconvenient to use. Therefore, there is an urgent need to improve the technology of the wind power generation yaw device structure to improve this equipment. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a wind power generation yaw device, which can be used when the wind power generation yaw device is used. When the gear located in the yaw box needs to be lubricated during the use of the wind turbine generator set, the second motor can be operated to drive the piston rod to move longitudinally through the transmission mechanism. When the piston rod moves downward, the lubricating oil in the lubricating oil tank can be pumped into the air pipe through the liquid inlet pipe through the pressure difference, and then the piston is driven to move upward to push the lubricating oil in the air pipe to the connecting pipe through the liquid outlet pipe. The opening of the connecting pipe is located between the meshing teeth at the outer end of the first cylindrical gear, and the meshing teeth between the first cylindrical gear and the second cylindrical gear can be lubricated to avoid excessive wear between the first cylindrical gear and the second cylindrical gear. In addition, the lubrication work can be ensured to proceed smoothly by adding material into the lubricating oil tank to avoid the lubricating oil being not replenished in time after use and affecting the use.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A wind power generation yaw device comprises a wind turbine generator set, wherein blades are arranged on the outside of the wind turbine generator set, a yaw box is connected to the bottom end of the wind turbine generator set, a mounting sleeve is fixedly connected to the bottom end of the yaw box, a support column is sleeved inside the mounting sleeve, the support column and the mounting sleeve are rotatably connected, a first cylindrical gear is fixedly connected to the top end of the support column, the first cylindrical gear is located in the yaw box and is rotatably connected to the yaw box, four first motors are mounted on the side wall of the yaw box, a second cylindrical gear is fixedly connected to the output end of the first motor, the second cylindrical gear is meshed with the first cylindrical gear, an air pipe is opened inside the support column, a piston is slidably connected to the inside of the air pipe, and a fixed portion at the middle of the bottom end of the piston A piston rod is fixedly connected, a piston rod groove is opened at the bottom of the support column near the air pipe, the piston rod extends into the piston rod groove, and the piston rod is driven to move longitudinally by a transmission mechanism in the support column, a liquid outlet pipe is connected to the middle part of the top end of the air pipe, a plurality of connecting pipes are arranged inside the first cylindrical gear, one end opening of the connecting pipe is connected to the liquid outlet pipe, and the other end opening of the connecting pipe is located between the outer end teeth of the first cylindrical gear, the side end of the support column is fixedly connected to the mounting column, the side end of the air pipe is connected to the liquid inlet pipe, and the inside of the liquid outlet pipe and the liquid inlet pipe are both provided with a one-way valve, the liquid inlet pipe passes through the mounting column and extends to the outside of the mounting column, a lubricating oil tank is arranged outside the support column, and the other end of the liquid inlet pipe is connected to the lubricating oil tank.

[0010] Furthermore, four of the second cylindrical gears are arranged around the first cylindrical gear, and the distances between the second cylindrical gears are equal.

[0011] Furthermore, a threaded groove is provided at the bottom end of the piston rod, and a threaded rod is connected to the internal thread of the threaded groove, and the threaded rod extends to the inside of the support column and is rotatably connected to the support column. A groove is provided inside the support column, and the bottom end of the threaded rod is connected to a first bevel gear, which is located in the groove, and the side end of the first bevel gear is meshingly connected to the second bevel gear, and the middle part of the side end of the second bevel gear is fixedly connected to a rotating rod, and the rotating rod extends to the outside of the support column and is rotatably connected to the support column, and the end of the rotating rod away from the second bevel gear is fixedly connected to a second motor, and the second motor is mounted on the outside of the support column.

[0012] Furthermore, the first bevel gear and the second bevel gear have the same size, and the pitches of the outer end teeth of the first bevel gear and the second bevel gear are also equal.

[0013] Furthermore, the one-way valve in the liquid outlet pipe allows one-way flow from the air pipe to the connecting pipe, and the one-way valve in the liquid inlet pipe allows one-way flow from the lubricating oil tank to the air pipe.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] (1) In the utility model, when the gears in the yaw box need to be lubricated during the use of the wind turbine generator set, the second motor can be operated to drive the piston rod to move longitudinally through the transmission mechanism. When the piston rod moves downward, the lubricating oil in the lubricating oil tank can be pumped into the air pipe through the liquid inlet pipe by the pressure difference, and then the piston is driven to move upward to push the lubricating oil in the air pipe to the connecting pipe through the liquid outlet pipe. The opening of the connecting pipe is located between the meshing teeth at the outer end of the first cylindrical gear, so that the meshing teeth between the first cylindrical gear and the second cylindrical gear can be lubricated to avoid excessive wear between the first cylindrical gear and the second cylindrical gear. In addition, the lubrication work can be ensured to proceed smoothly by adding material into the lubricating oil tank to avoid the lubricating oil not being replenished in time after use, which affects the use.

[0017] (2) In the utility model, when the second motor is working, it can drive the second bevel gear to rotate. The second bevel gear drives the first bevel gear to rotate through the meshing structure formed with the first bevel gear. The first bevel gear drives the threaded rod to rotate. The threaded rod drives the piston rod to move longitudinally through the threaded connection formed with the thread groove, thereby driving the piston to move up and down, thereby achieving the purpose of continuously pumping the lubricating oil in the lubricating oil tank to the opening of the connecting pipe to lubricate the first cylindrical gear and the second cylindrical gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the first cylindrical gear of the utility model from top view;

[0020] Figure 3 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0021] Description of the numbers in the figure:

[0022] 1. Wind turbine generator set; 2. Blades; 3. Yaw box; 4. Mounting sleeve; 5. Support column; 6. First cylindrical gear; 7. First motor; 8. Second cylindrical gear; 9. Air pipe; 10. Piston; 11. Piston rod; 12. Piston rod groove; 13. Threaded groove; 14. Threaded rod; 15. Groove; 16. First bevel gear; 17. Second bevel gear; 18. Rotating rod; 19. Second motor; 20. Liquid outlet pipe; 21. Connecting pipe; 22. Mounting column; 23. Liquid inlet pipe; 24. Lubricating oil tank. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0024] Example:

[0025] See also Figure 1-3A wind power generation yaw device comprises a wind turbine generator set 1, wherein blades 2 are arranged on the outside of the wind turbine generator set 1, a yaw box 3 is connected to the bottom end of the wind turbine generator set 1, a mounting sleeve 4 is fixedly connected to the bottom end of the yaw box 3, a support column 5 is sleeved inside the mounting sleeve 4, the support column 5 and the mounting sleeve 4 are rotatably connected, a first cylindrical gear 6 is fixedly connected to the top of the support column 5, the first cylindrical gear 6 is located in the yaw box 3 and is rotatably connected to the yaw box 3, four first motors 7 are mounted on the side wall of the yaw box 3, a second cylindrical gear 8 is fixedly connected to the output end of the first motor 7, the second cylindrical gear 8 is meshed with the first cylindrical gear 6, an air pipe 9 is opened inside the support column 5, a piston 10 is slidably connected inside the air pipe 9, and a piston rod 11 is fixedly connected to the middle of the bottom end of the piston 10, A piston rod groove 12 is provided at the bottom end of the support column 5 near the air pipe 9, and the piston rod 11 extends into the piston rod groove 12. The piston rod 11 is driven to move longitudinally by a transmission mechanism in the support column 5. A liquid outlet pipe 20 is connected to the middle of the top end of the air pipe 9. A plurality of connecting pipes 21 are provided inside the first cylindrical gear 6. One end opening of the connecting pipe 21 is connected to the liquid outlet pipe 20, and the other end opening of the connecting pipe 21 is located between the outer end teeth of the first cylindrical gear 6. A mounting column 22 is fixedly connected to the side end of the support column 5. A liquid inlet pipe 23 is connected to the side end of the air pipe 9. A one-way valve is provided inside the liquid outlet pipe 20 and the liquid inlet pipe 23. The liquid inlet pipe 23 passes through the mounting column 22 and extends to the outside of the mounting column 22. A lubricating oil tank 24 is provided outside the support column 5, and the other end of the liquid inlet pipe 23 is connected to the lubricating oil tank 24.

[0026] During the use of the wind turbine generator set 1, when it is necessary to lubricate the gears located in the yaw box 3, the second motor 19 can be operated to drive the piston rod 11 to move longitudinally through the transmission mechanism. When the piston rod 11 moves downward, the lubricating oil in the lubricating oil tank 24 can be pumped into the air pipe 9 through the liquid inlet pipe 23 by the pressure difference, and then the piston 10 is driven to move upward, and the lubricating oil in the air pipe 9 is pushed to the connecting pipe 21 through the liquid outlet pipe 20. The opening of the connecting pipe 21 is located between the meshing teeth at the outer end of the first cylindrical gear 6, and the meshing teeth between the first cylindrical gear 6 and the second cylindrical gear 8 can be lubricated to avoid excessive wear between the first cylindrical gear 6 and the second cylindrical gear 8. The lubrication work can be ensured to proceed smoothly by adding material into the lubricating oil tank 24 to avoid the lubricating oil being not replenished in time after use and affecting the use.

[0027] See also Figure 1 and Figure 3, four second cylindrical gears 8 are arranged around the first cylindrical gear 6, and the distance between the second cylindrical gears 8 is equal. A threaded groove 13 is provided at the bottom end of the piston rod 11, and a threaded rod 14 is connected to the internal thread of the threaded groove 13. The threaded rod 14 extends to the inside of the support column 5 and is rotatably connected with the support column 5. A groove 15 is provided inside the support column 5, and a first bevel gear 16 is connected to the bottom end of the threaded rod 14. The first bevel gear 16 is located in the groove 15, and the side end of the first bevel gear 16 is meshed and connected with the second bevel gear 17. A rotating rod 18 is fixedly connected to the middle part of the side end of the second bevel gear 17, and the rotating rod 18 extends to the outside of the support column 5 and is rotatably connected to the support column 5. The end of the rotating rod 18 away from the second bevel gear 17 is fixedly connected to a second motor 19, and the second motor 19 is mounted on the outside of the support column 5.

[0028] See also Figure 1 and Figure 3 The first bevel gear 16 and the second bevel gear 17 have the same size, and the pitch of the outer teeth of the first bevel gear 16 and the second bevel gear 17 is also equal. The one-way valve in the liquid outlet pipe 20 flows in one direction from the air pipe 9 to the connecting pipe 21, and the one-way valve in the liquid inlet pipe 23 flows in one direction from the lubricating oil tank 24 to the air pipe 9. When the second motor 19 is working, the piston rod 11 can be driven to move longitudinally through the transmission mechanism. When the piston rod 11 moves downward, the lubricating oil in the lubricating oil tank 24 can be pumped into the air pipe 9 through the liquid inlet pipe 23 through the pressure difference, and then the piston 10 is driven to move upward, and the lubricating oil in the air pipe 9 is pushed to the connecting pipe 21 through the liquid outlet pipe 20. The opening of the connecting pipe 21 is located between the teeth at the outer end of the first cylindrical gear 6, and the teeth between the first cylindrical gear 6 and the second cylindrical gear 8 can be lubricated to avoid excessive wear between the first cylindrical gear 6 and the second cylindrical gear 8.

[0029] In the utility model, when the relevant technical personnel use the device, during the use of the wind turbine generator set 1, when the wind direction changes, the first motor 7 can drive the second cylindrical gear 8 to rotate, and the second cylindrical gear 8 can make the yaw box 3 and the support column 5 rotate relative to each other through the meshing structure formed with the first cylindrical gear 6, so that the wind turbine generator set 1 faces the wind direction, so that the wind turbine generator set 1 can generate electricity better and prevent yaw;

[0030] When it is necessary to lubricate the gears in the yaw box 3, the second motor 19 can be operated to drive the piston rod 11 to move longitudinally through the transmission mechanism. When the piston rod 11 moves downward, the lubricating oil in the lubricating oil tank 24 can be pumped into the air pipe 9 through the liquid inlet pipe 23 by the pressure difference, and then the piston 10 is driven to move upward to push the lubricating oil in the air pipe 9 to the connecting pipe 21 through the liquid outlet pipe 20. The opening of the connecting pipe 21 is located between the meshing teeth at the outer end of the first cylindrical gear 6, and the meshing teeth between the first cylindrical gear 6 and the second cylindrical gear 8 can be lubricated to avoid excessive wear between the first cylindrical gear 6 and the second cylindrical gear 8. In addition, the lubrication work can be ensured to proceed smoothly by adding material into the lubricating oil tank 24 to avoid the lubricating oil being not replenished in time after use and affecting the use.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind power generation yaw device, comprising a wind power generator set (1), characterized in that: The wind turbine generator set (1) is provided with blades (2) on the outside, the bottom end of the wind turbine generator set (1) is connected to a yaw box (3), the bottom end of the yaw box (3) is fixedly connected to a mounting sleeve (4), the interior of the mounting sleeve (4) is sleeved with a support column (5), the support column (5) and the mounting sleeve (4) are rotatably connected, the top end of the support column (5) is fixedly connected to a first cylindrical gear (6), the first cylindrical gear (6) is located in the yaw box (3) and is connected to the yaw box (3). The yaw box (3) is provided with four first motors (7) on the side wall thereof, the output end of the first motor (7) is fixedly connected with a second cylindrical gear (8), the second cylindrical gear (8) is meshingly connected with the first cylindrical gear (6), an air pipe (9) is provided inside the support column (5), a piston (10) is slidably connected inside the air pipe (9), a piston rod (11) is fixedly connected to the middle of the bottom end of the piston (10), and the support column (5) is close to the air pipe. A piston rod groove (12) is provided at the bottom end of the support column (9), the piston rod (11) extends into the piston rod groove (12), the piston rod (11) is driven to move longitudinally by a transmission mechanism in the support column (5), a liquid outlet pipe (20) is connected to the middle of the top end of the air pipe (9), a plurality of connecting pipes (21) are provided inside the first cylindrical gear (6), one end opening of the connecting pipe (21) is connected to the liquid outlet pipe (20), and the other end opening of the connecting pipe (21) is located at the first cylindrical gear (6). The side end of the support column (5) is fixedly connected to a mounting column (22) between the outer end teeth of the column gear (6); the side end of the air pipe (9) is connected to a liquid inlet pipe (23); both the liquid outlet pipe (20) and the liquid inlet pipe (23) are provided with a one-way valve inside; the liquid inlet pipe (23) passes through the mounting column (22) and extends to the outside of the mounting column (22); a lubricating oil tank (24) is provided outside the support column (5); and the other end of the liquid inlet pipe (23) is connected to the lubricating oil tank (24).

2. A wind power generation yaw device according to claim 1, characterized in that: The four second cylindrical gears (8) are arranged around the first cylindrical gear (6), and the distances between the second cylindrical gears (8) are equal.

3. A wind power generation yaw device according to claim 1, characterized in that: The transmission mechanism comprises a thread groove (13), a threaded rod (14), a groove (15), a first bevel gear (16), a second bevel gear (17), a rotating rod (18) and a second motor (19); the bottom end of the piston rod (11) is provided with a thread groove (13); the inner thread of the thread groove (13) is connected to the threaded rod (14); the threaded rod (14) extends into the interior of the support column (5) and is rotatably connected to the support column (5); the interior of the support column (5) is provided with a groove (15); the bottom end of the threaded rod (14) is connected to the second bevel gear (16); the second bevel gear (17) is connected to the second motor (19); A first bevel gear (16) is provided, the first bevel gear (16) is located in the groove (15), the side end of the first bevel gear (16) is meshedly connected with the second bevel gear (17), the middle part of the side end of the second bevel gear (17) is fixedly connected with a rotating rod (18), the rotating rod (18) extends to the outside of the support column (5) and is rotatably connected to the support column (5), and the end of the rotating rod (18) away from the second bevel gear (17) is fixedly connected with a second motor (19), and the second motor (19) is mounted outside the support column (5).

4. A wind power generation yaw device according to claim 3, characterized in that: The first bevel gear (16) and the second bevel gear (17) have the same size, and the pitches of the outer end teeth of the first bevel gear (16) and the second bevel gear (17) are also equal.

5. A wind power generation yaw device according to claim 1, characterized in that: The one-way valve in the liquid outlet pipe (20) allows one-way flow from the air pipe (9) to the connecting pipe (21), and the one-way valve in the liquid inlet pipe (23) allows one-way flow from the lubricating oil tank (24) to the air pipe (9).

Images