Fan yaw large tooth surface repairing tool
By designing a surface repair tool for the wind turbine yaw teeth, and using a motor-driven belt drive and a worm gear reducer to control the lifting and rotation of the milling cutter disc, the problems of secondary damage and low efficiency during the repair of the yaw teeth of wind turbine blades were solved, achieving an efficient and stable repair effect.
Patent Information
- Application Number
- CN202422100237.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The existing technology is prone to causing secondary damage when repairing the yaw teeth of wind turbine blades, incomplete grinding, and difficulty in transporting mechanical equipment, resulting in high costs and low efficiency.
A surface repair tool for fan yaw teeth was designed, which included a workbench, a protective sleeve, a worm gear reducer, a hollow shaft, a core shaft, a milling cutter disc and a lifting mechanism. The lifting and rotation of the milling cutter disc were controlled by a motor-driven belt transmission and a worm gear reducer, achieving rapid disassembly, transportation and efficient grinding.
It realizes rapid disassembly and transportation, ensures the stability and accuracy of grinding, improves repair efficiency, and reduces operation difficulty and cost.
Smart Images
Figure CN223394452U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grinding devices, in particular to a surface repair tool for a yaw gear of a fan. Background Art
[0002] The yaw gear is one of the important components in the wind turbine and an important part of the yaw system. It is located at the bottom of the nacelle seat, with the lower end connected to the tower by bolts, and the upper part supports the entire nacelle mechanism through the sliding surface. It is meshed with the output gears of the four yaw reducers around it. Driven by the yaw drive, it drives the nacelle mechanism to rotate slowly as a whole to achieve the purpose of adjusting the direction of the wind turbine impeller.
[0003] During the use of wind turbine blades, the yaw teeth will inevitably malfunction, and after the repair is completed, bulges and other phenomena will appear, affecting normal operation. Therefore, the surface of the yaw teeth needs to be repaired and polished. However, if the yaw teeth are disassembled and transported for polishing, or polished manually or with large-scale polishing equipment, not only will the yaw teeth be damaged due to improper operation during the polishing process, the polishing will not be thorough, and the mechanical equipment will be difficult to transport, but it will also result in high polishing costs and unsatisfactory polishing results. Therefore, it is necessary to develop a wind turbine yaw tooth surface repair tool that is simple to operate, can be quickly disassembled for transportation, has good repair effect, and high polishing efficiency. Utility Model Content
[0004] In response to the above technical problems, the utility model provides a wind turbine yaw tooth surface repair tooling that is simple and easy to operate, can be quickly disassembled for transportation, has good repair effect and high grinding efficiency, so as to solve the current problems of secondary damage to the yaw teeth caused by improper operation during the grinding process of wind turbine blades, incomplete grinding, and difficulty in transporting mechanical equipment.
[0005] In order to solve the above technical problems, the utility model describes a surface repair tool for a yaw tooth of a wind turbine, comprising a workbench, a protective sleeve and a worm gear reducer fixedly connected to the workbench, a hollow shaft rotatably connected to the upper inner part of the protective sleeve, a core shaft connected to the hollow shaft, a milling cutter disc fixedly connected to the bottom of the core shaft, a lifting mechanism connected to the lower part of the core shaft, the lifting mechanism being controlled by the worm gear reducer, a base plate fixedly connected to the workbench, a motor provided on the base plate, a driving wheel fixedly connected to the output end of the motor, the driving wheel is transmitted to the hollow shaft through a belt, and a fixing hole is provided on the workbench.
[0006] Furthermore, the hollow shaft is rotatably connected to the inner upper portion of the protective sleeve via a second bearing, the upper portion of the hollow shaft is connected to a driven wheel, and the driving wheel is driven by the belt.
[0007] Furthermore, a spline sleeve is fixedly connected to the bottom of the hollow shaft, a spline groove is provided on the core shaft, the length of the spline groove is longer than the height of the spline sleeve, and the spline sleeve is slidably connected to the spline groove, which facilitates the up and down movement of the core shaft without affecting the rotation of the core shaft.
[0008] Furthermore, the lifting mechanism includes a sliding sleeve shaft, which is slidingly connected to the lower inner part of the protective sleeve, and is rotatably connected to the core shaft through a second bearing and a third bearing. A sliding sleeve rack is fixedly connected to the outside of the sliding sleeve shaft, and the sliding sleeve rack is rotatably connected to a pinion, and the pinion is rotatably connected to the worm gear reducer. A protective shell is provided on the outside of the worm gear reducer.
[0009] Furthermore, a slot is provided at the lower portion of the core shaft, and the second bearing and the third bearing are embedded in the slot, so as to facilitate the control of the core shaft to move up and down.
[0010] Furthermore, a through hole is provided in the center of the workbench, and the sliding sleeve shaft passes through the through hole.
[0011] Furthermore, a support is fixedly connected to the base plate, the upper inner portion of the support is fixedly connected to the motor, the lower inner portion of the support is fixedly connected to a screw, and the other end of the screw is fixedly connected to the upper outer portion of the protective sleeve.
[0012] Furthermore, the milling cutter disc is fixedly connected to the core shaft via a locking nut, thereby ensuring the stability of the milling cutter disc.
[0013] Compared with the prior art, the present invention has the following advantages:
[0014] 1. The utility model ensures the stability and horizontality of the tooling during repair and grinding by setting a workbench and a protective sleeve; the motor output end is used to drive the hollow shaft through a belt, and the hollow shaft is used to drive the core shaft to rotate, so that the milling cutter disc rotates for grinding, thereby improving the grinding efficiency; a worm gear reducer is provided to control the lifting mechanism to complete the up and down lifting of the core shaft, and a self-locking function is realized after the lifting is completed, ensuring that the height of the milling cutter disc remains unchanged, thereby ensuring the accuracy of grinding; the workbench is fixed to a fixed position above the brake caliper by bolts through the fixing holes, which is simple to fix and convenient for grinding.
[0015] 2. The utility model realizes the rotation of the core shaft by setting a spline sleeve and a spline groove, and the length of the spline groove is longer than the height of the spline sleeve, ensuring that the core shaft can rotate while rising and falling.
[0016] 3. The utility model has a slot at the bottom of the core shaft, and the second bearing and the third bearing are embedded in the slot, so as to control the core shaft to move up and down.
[0017] 4. The utility model has a through hole in the center of the workbench, and the sliding sleeve passes through the through hole, which is convenient for driving the milling cutter disc to rotate and grind.
[0018] 5. The utility model fixes the support to the bottom plate, the support is fixed to the motor, and the protective sleeve and the support are connected by a screw, thereby stabilizing the balance of the entire grinding tool.
[0019] 6. The utility model fixes the milling cutter disc to the core shaft through a locking nut, which not only ensures the stability of the milling cutter disc, but also allows the worn milling cutter disc to be quickly replaced.
[0020] 7. The utility model can quickly disassemble the grinding tool into several parts, which is convenient for transportation; when it is used, it is simple and convenient to re-fix and reconnect, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is the main view of the structure of the utility model.
[0022] Figure 2 This is a schematic diagram of the appearance of the protective sleeve of the utility model.
[0023] Figure 3 This is a cross-sectional view of the internal structure of the protective sleeve of the utility model.
[0024] Figure 4 This is an enlarged schematic diagram of the internal structure A of the protective sleeve of the present invention.
[0025] Figure 5 This is a schematic diagram of the workbench structure of the utility model.
[0026] Figure 6 This is a schematic diagram of the card slot structure of the utility model.
[0027] In the figure: 1. support, 2. motor, 3. belt, 4. driving wheel, 5. base plate, 6. worm gear reducer, 7. milling cutter, 8. screw, 9. driven wheel, 10. protective sleeve, 11. workbench, 12. third bearing, 13. protective shell, 14. locking nut, 15. first bearing, 16. sliding sleeve shaft, 17. sliding sleeve rack, 18. pinion, 19. core shaft, 20. hollow shaft, 21. second bearing, 22 slot, 23. spline sleeve, 24. spline groove, 25. fixing hole. DETAILED DESCRIPTION
[0028] The present invention will be further described below with reference to the accompanying drawings.
[0029] like Figure 1 、 2, 3, 4, 5, and 6 show a surface repair tool for a yaw gear of a wind turbine, comprising a workbench 11, to which a protective sleeve 10 and a worm gear reducer 6 are fixedly connected, a hollow shaft 20 is rotatably connected to the upper inner portion of the protective sleeve 10, a core shaft 19 is connected to the inner portion of the hollow shaft 20, a milling cutter disc 7 is fixedly connected to the bottom of the core shaft 19, a lifting mechanism is connected to the lower portion of the core shaft 19, and the lifting mechanism is controlled by the worm gear reducer 6, a base plate 5 is fixedly connected to the workbench 11, a motor 2 is provided on the base plate 5, a driving wheel 4 is fixedly connected to the output end of the motor 2, the driving wheel 4 is transmitted to the hollow shaft 20 through a belt 3, and a fixing hole 25 is provided on the workbench 11.
[0030] In order to fix the repair tooling and ensure its safety, a fixing hole 25 is opened on the workbench 11, and the workbench 11 is fixed to a fixed position on the yaw caliper by using bolts through the fixing hole 25. The workbench 11 is fixedly connected to the base plate 5 and the protective sleeve 10, the base plate 5 is fixedly connected to the support 1, and the inner side of the support 1 is fixedly connected to a screw 8, and the other end of the screw 8 is fixedly connected to the protective sleeve 10 to form a closed loop, thereby ensuring the stability and safety of the repair tooling.
[0031] It should be noted that the support 1 and the motor 2 as well as the support 1 and the base plate 5 are fixedly connected by bolts. After unscrewing the bolts, the repair tooling can be disassembled into several parts for easy disassembly and transportation.
[0032] To achieve rotary grinding, a driving wheel 4 is fixedly connected to the output end of the motor 2. The driving wheel 4 drives the driven wheel 9 to rotate through the belt 3. The driven wheel 9 drives the hollow shaft 20 to rotate. The hollow shaft 20 drives the spline groove 24 to rotate through the spline sleeve 23. The core shaft 19 rotates accordingly, and the core shaft 19 drives the milling cutter disc 7 to rotate for grinding.
[0033] A control switch is provided to control the motor 2, and the motor 2 and the control switch are electrically connected to the power supply via a power line.
[0034] To ensure the normal operation and stability of rotary grinding, the hollow shaft 20 is rotatably connected to the protective sleeve 10 through the first bearing 15, and the core shaft 19 is rotatably connected to the sliding sleeve shaft 16 through the second bearing 21 and the third bearing 12. A protective shell 13 is provided on the outside of the worm gear reducer 6, which not only ensures the normal operation of the hollow shaft 20, the core shaft 19, the worm gear reducer 6 and the lifting mechanism, but also prevents water, dust and other pollutants from damaging its internal structure. The milling cutter disc 7 is fixedly connected to the core shaft 19 through the locking nut 14, which not only ensures the stability of the milling cutter disc 7, but also allows the worn milling cutter disc 7 to be quickly replaced.
[0035] In order to control the up and down movement of the milling cutter disc 7, the worm in the worm gear reducer 6 is rotated, and the worm rotates the turbine, driving the pinion 18 to rotate, and the pinion 18 drives the sliding sleeve rack 17 to slide, and the sliding sleeve rack 17 drives the sliding sleeve shaft 16 to move up and down, and the second bearing 21 and the third bearing 12 are embedded in the slot 22, thereby controlling the core shaft 19 to move up and down, realizing the up and down movement of the milling cutter disc 7, and after the lifting is completed, the worm gear reducer 6 realizes the self-locking function, ensuring that the height of the milling cutter disc 7 remains unchanged, thereby ensuring the accuracy of repair and grinding.
[0036] The working process of this embodiment is as follows:
[0037] Before repairing and grinding the surface of the fan yaw gear, first, remove the fan yaw gear, use bolts to pass through the fixing holes 25 to fix the grinding tooling on the yaw caliper, adjust the screw 8 to keep the repair tooling level, start the brake, and adjust the milling cutter disc 7 to align with the surface of the fan yaw gear; secondly, control the motor 2 through the control switch to drive the driving wheel 4 to rotate, and the driving wheel 4 drives the driven wheel 9 to rotate through the belt 3, and the driven wheel 9 drives the hollow shaft 20, and the core shaft 19 rotates accordingly, so that the milling cutter disc 7 rotates for grinding; then, rotate the worm in the worm gear reducer 6, and the turbine rotates accordingly, driving the pinion 18 to rotate, and the pinion 18 drives the lifting mechanism to complete the up and down lifting, thereby realizing the up and down lifting of the milling cutter disc 7; finally, use the worm to adjust the height of the milling cutter disc 7 to complete the repair and grinding work. After grinding is completed, rotate the worm to adjust the milling cutter disc 7, turn off the motor 2, disassemble the repair tooling and transport it to the ground.
[0038] Among them, in the process of driving the milling cutter disc 7 to rotate, the hollow shaft 20 drives the spline groove 24 to rotate through the spline sleeve 23, and the core shaft 19 rotates accordingly, and the core shaft 19 drives the milling cutter disc 7 to rotate for grinding; in the process of completing the lifting and lowering of the milling cutter disc 7, the pinion 18 drives the sliding sleeve rack 17 in the lifting mechanism to slide, and the sliding sleeve rack 17 drives the sliding sleeve shaft 16 to move up and down, and the core shaft 19 rises and falls accordingly, so that the milling cutter disc 7 can adjust the height up and down to complete the grinding.
Claims
1. A surface repair tool for a fan yaw gear, comprising a workbench (11), characterized in that: The workbench (11) is fixedly connected to a protective sleeve (10) and a worm gear reducer (6); the upper portion of the protective sleeve (10) is rotatably connected to a hollow shaft (20); a core shaft (19) is connected to the hollow shaft (20); a milling cutter disc (7) is fixedly connected to the bottom of the core shaft (19); a lifting mechanism is connected to the lower portion of the core shaft (19); the lifting mechanism is controlled by the worm gear reducer (6); a base plate (5) is fixedly connected to the workbench (11); a motor (2) is provided on the base plate (5); a driving wheel (4) is fixedly connected to the output end of the motor (2); the driving wheel (4) is driven by the hollow shaft (20) through a belt (3); and a fixing hole (25) is provided on the workbench (11).
2. The surface repair tool for the wind turbine yaw gear according to claim 1 is characterized in that: The hollow shaft (20) is rotatably connected to the protective sleeve (10) via a first bearing (15); a driven wheel (9) is connected to the upper portion of the hollow shaft (20); and the driving wheel is driven by the driven wheel (9) via the belt (3).
3. The surface repair tool for the wind turbine yaw gear according to claim 1 is characterized in that: A spline sleeve (23) is fixedly connected to the bottom of the hollow shaft (20), a spline groove (24) is provided on the core shaft (19), the length of the spline groove (24) is longer than the height of the spline sleeve (23), and the spline sleeve (23) is slidably connected to the spline groove (24).
4. The surface repair tool for the wind turbine yaw gear according to claim 1 is characterized in that: The lifting mechanism includes a sliding sleeve shaft (16), the sliding sleeve shaft (16) is slidably connected to the inner lower part of the protective sleeve (10), the sliding sleeve shaft (16) is rotatably connected to the core shaft (19) through a second bearing (21) and a third bearing (12), the sliding sleeve shaft (16) is fixedly connected to a sliding sleeve rack (17) on the outside, the sliding sleeve rack (17) is rotatably connected to a pinion (18), the pinion (18) is rotatably connected to the worm gear reducer (6), and a protective shell (13) is provided on the outside of the worm gear reducer (6).
5. The surface repair tool for the wind turbine yaw gear according to claim 4 is characterized in that: The core shaft (19) is provided with a slot (22), and the second bearing (21) and the third bearing (12) are embedded in the slot (22).
6. The surface repair tool for the wind turbine yaw gear according to claim 4 is characterized in that: A through hole is provided in the center of the workbench (11), and the sliding sleeve shaft (16) passes through the through hole.
7. The surface repair tool for the wind turbine yaw gear according to claim 1 is characterized by: A support (1) is fixedly connected to the base plate (5), the upper inner portion of the support (1) is fixedly connected to the motor (2), the lower inner portion of the support (1) is fixedly connected to a screw rod (8), and the other end of the screw rod (8) is fixedly connected to the upper outer portion of the protective sleeve (10).
8. The surface repair tool for the wind turbine yaw gear according to claim 1 is characterized in that: The milling cutter disc (7) is fixedly connected to the core shaft (19) via a locking nut (14).