Variable pitch bearing fixed ring sealing installation tool for wind driven generator
By designing a fixture for installing the stationary ring seal of the wind turbine pitch bearing, the problem of the difficulty of manually replacing the seal ring was solved, realizing automated installation and improving replacement efficiency and safety.
Patent Information
- Application Number
- CN202520025206.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-07
AI Technical Summary
In the existing technology, the replacement of the pitch bearing seal ring is difficult to perform manually due to the close distance between the hub cover and the bearing, making direct operation impossible.
Design a tooling for installing the stationary ring seal of a wind turbine pitch bearing, including components such as a base, a clamping support rod, an adjusting rod, and a sealing adjustment rod, which achieve automated installation of the seal ring through threaded connection and bolt fixing.
This technology enables convenient replacement of the pitch bearing seal ring, eliminating the need for manual rotation and improving replacement efficiency and safety.
Smart Images
Figure CN223790362U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bearing assembly technology, and mainly relates to a tooling for installing the stationary ring seal of a pitch bearing for a wind turbine generator. Background Technology
[0002] Since the pitch bearing has a ring fixed to the hub, the seal installed on this ring does not rotate with the pitch bearing. When replacing this seal, it is generally necessary for a person to rotate around the bearing ring to replace it. Since the hub cover is close to the bearing, personnel cannot directly replace it. Therefore, it is necessary to design a special tool for replacing the pitch bearing ring seal to replace the seal on the pitch bearing ring. Utility Model Content
[0003] The purpose of this invention is to provide a tooling for installing the stationary ring seal of a wind turbine pitch bearing.
[0004] The objective of this utility model can be achieved using the following technical solutions:
[0005] A wind turbine pitch bearing stationary ring seal installation fixture includes a base fixedly connected to the root flange of the blade; the bottom surface of the base contacts the bearing end face; a clamping support rod and a pre-clamping support rod are connected to the base; the clamping support rod and the pre-clamping support rod are arranged parallel to each other, and the length of the pre-clamping support rod is greater than the length of the clamping support rod; a clamping radial adjustment rod is connected to the clamping support rod; the other end of the clamping radial adjustment rod is connected to a clamping axial adjustment rod, and a clamping head is connected to the other end of the clamping axial adjustment rod; the pre-clamping support rod is connected to a pre-clamping radial adjustment rod; the other end of the pre-clamping radial adjustment rod is connected to a pre-clamping axial adjustment rod, and a pre-clamping head is connected to the other end of the pre-clamping axial adjustment rod. A sealing adjustment rod is connected to the middle of the pre-tightening axial adjustment rod; the sealing adjustment rod is horizontally positioned; the sealing adjustment rod has multiple connecting holes along its length for connecting with a sealing alignment rod; a sealing alignment rod for preventing the sealing block from flipping is perpendicular to the sealing adjustment rod; the sealing alignment rod adjusts the distance between the sealing alignment rod and the pre-tightening head by cooperating with different connecting holes; the side of the sealing adjustment rod has multiple through holes along its length for connecting with a sealing input rod; the sealing input rod is perpendicular to the sealing adjustment rod, and the length of the sealing input rod is less than the length of the sealing alignment rod; the end of the sealing input rod is a rectangular block that cooperates with the sealing groove to press the sealing block into the sealing groove.
[0006] One end of the pre-tightening head is a threaded rod that is threadedly connected to the pre-tightening axial adjustment rod, which can adjust the direction of the pre-tightening head; the other end of the pre-tightening head is a "U"-shaped hole for welding and fixing to the finished deep groove ball bearing.
[0007] One end of the clamping head is a threaded rod that is threadedly connected to the clamping axial adjustment rod, which can adjust the direction of the clamping head; the other end of the clamping head is a "U"-shaped hole for welding and fixing to the finished deep groove ball bearing.
[0008] The pre-tightening axial adjusting rod and the clamping axial adjusting rod are threaded rods at one end and cuboids at the other end, with threaded through holes on the side for connecting with the pre-tightening radial adjusting rod and the clamping radial adjusting rod.
[0009] The pre-tightening radial adjusting rod and the clamping radial adjusting rod are exactly the same. One end is a threaded rod and the other end is a cuboid with a threaded through hole on the side. The radial distance can be adjusted by connecting the pre-tightening axial adjusting rod and the clamping axial adjusting rod with a nut.
[0010] The aforementioned preload axial adjustment rod has a threaded rod at one end, which is connected to the preload radial adjustment rod with a nut to adjust the axial distance. The other end has a threaded hole along the center of the end face, which is connected to the preload head with a nut. The middle position has two flat surfaces on both sides, with a hole in the middle of the flat surface, which is connected to the sealing adjustment rod with a bolt.
[0011] The aforementioned axial adjustment rod has a threaded rod at one end, which is connected to the radial adjustment rod with a nut to adjust the axial distance. The other end has a threaded hole along the center of the end face, and a nut is used to fix the clamping head.
[0012] The base is a cuboid with all six sides flat. A threaded through hole is opened in the middle of the front for fixing to the blade root flange with bolts. Threaded through holes are opened on both sides of the top for fixing the pre-tightening axial adjustment rod and the clamping axial adjustment rod with nuts.
[0013] This utility model proposes a tooling for installing the stationary ring seal of a pitch bearing for a wind turbine. In use, the base is fixed on the flange at the root of the blade, the new sealing block is placed in the sealing groove, the various components are adjusted and fixed in place, and the pitch bearing is started to rotate in the direction of sealing installation, and the seal is slowly installed in place. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 for Figure 1 Sectional view of AA.
[0016] Figure 3 for Figure 1 BB section view.
[0017] Figure 4 for Figure 1 CC section view.
[0018] Figure 5 for Figure 1 DD section view.
[0019] In the diagram: 1. Base, 2. Pressing support rod, 3. Pressing radial adjustment rod, 4. Pressing axial adjustment rod, 5. Pre-pressing support rod, 6. Pre-pressing axial adjustment rod, 7. Pre-pressing radial adjustment rod, 8. Sealing adjustment rod, 9. Sealing alignment rod, 10. Sealing input rod, 11. Pre-pressing head, 12. Pressing head. Detailed Implementation
[0020] The present invention will be described in conjunction with the accompanying drawings and specific embodiments.
[0021] As shown in the figure, a tooling for installing the stationary ring seal of a pitch bearing for a wind turbine generator is provided. The tooling consists of a base 1, a clamping support rod 2, a clamping radial adjustment rod 3, a clamping axial adjustment rod 4, a pre-clamping support rod 5, a pre-clamping axial adjustment rod 6, a pre-clamping radial adjustment rod 7, a sealing adjustment rod 8, a sealing alignment rod 9, a sealing input rod 10, a pre-clamping head 11, and a clamping head 12.
[0022] Referring to the attached drawings, the base 1 is fixed to the blade root flange with a single bolt, and its bottom surface contacts the exposed bearing end face. The clamping support rod 2 and the pre-clamping support rod 5 are connected to the threaded holes on the base and fixed with nuts. One end of the clamping radial adjustment rod 3 has an external thread and is threaded to the clamping support rod 2. Adjusting the thread engagement length can adjust the radial distance to ensure that the sealing clamping head is directly above the sealing groove. Finally, it is fixed with nuts. Similarly, the pre-clamping radial adjustment rod 7 and the pre-clamping support rod 5 are also adjusted in the same way. The other end has a radial threaded hole and is threaded to the clamping axial adjustment rod 4. One end of the clamping axial adjusting rod 4 has an external thread and is threadedly connected to the clamping radial adjusting rod 3. Adjusting the thread engagement length of the clamping axial adjusting rod 4 can adjust the axial distance. After the distance is appropriate, a nut is used to fix it to ensure the clamping force of the clamping head 12. Similarly, the pre-clamping axial adjusting rod 6 and the pre-clamping radial adjusting rod 7 are also adjusted in this way to adjust the axial distance, with the axial clamping force adjusted to be relatively small during adjustment. The other end has a threaded hole and is threadedly connected to the clamping head 12. One end of the clamping head 12 has an external thread and is threadedly connected to the clamping axial adjusting rod 4. This allows for fine adjustment of the clamping force and also adjustment of the direction of the clamping wheel. After the adjustment is appropriate, a nut is used to fix it. Similarly, the pre-clamping axial adjusting rod 6 and the pre-clamping head 11 are also adjusted in this way. The clamping force and the direction of the clamping wheel are adjusted at one end, and the other end is a "U"-shaped groove with a hole in the middle for welding a 606 bearing to reduce the elongation of the seal. After the clamping and pre-clamping components are fixed, the seal adjusting rod 8 and the pre-clamping radial adjusting rod 7 are connected by bolts. The seal adjusting rod 8 has evenly spaced holes on its top and side. The holes on the top of the seal adjusting rod 8 are connected to the seal alignment rod 9 with nuts. The presence of multiple holes allows for adjustment of the distance between the seal and the pre-clamping head 11. The holes on the side of the seal adjusting rod 8 are connected to the seal input rod 10 with nuts. The presence of multiple holes allows for adjustment of the distance between the seal input rod 10 and the seal alignment rod 9. After the tooling is assembled and adjusted, the pitch bearing is started to rotate. The tooling rotates around the pitch fixed circle for one revolution, and at the same time, the seal is installed in place.
[0023] The clamping support rod and the pre-clamping support rod have the same shape but different lengths, so that they can be staggered to avoid interference.
[0024] The clamping radial adjustment rod and the pre-clamping radial adjustment rod have the same external dimensions. One end is connected to the clamping support rod and the pre-clamping support rod, which can adjust the radial position to ensure that the pressure roller is directly above the sealing groove.
[0025] The aforementioned axial adjustment rod and radial adjustment rod are connected by threads to adjust the axial distance and ensure the pressure of the sealing roller.
[0026] The pre-tightening axial adjustment rod and the pre-tightening radial adjustment rod are connected by threads. On the one hand, they adjust the axial distance to ensure the pressure of the sealing roller, and on the other hand, they are connected to the sealing adjustment rod to ensure that the seal enters the sealing groove in a suitable position.
[0027] The clamping head and the pre-pressure head are characterized by having the same shape but different dimensions. The bearing installed on the pre-pressure head is relatively large, so that it can withstand the pressure brought by the sealing adjustment rod. It is connected to the clamping axial adjustment rod and the pre-clamping axial adjustment rod by threads, so that the direction of the clamping head and the pre-pressure head can be adjusted.
[0028] Both the sealing alignment rod and the sealing input rod are connected to the sealing adjustment rod with bolts, which allows the sealing face to enter the pre-pressure head position.
Claims
1. A tooling for installing the stator seal of a pitch bearing for a wind turbine generator, characterized in that: The mounting fixture has a base fixed to the blade root flange; the bottom surface of the base contacts the bearing end face; a clamping support rod and a pre-clamping support rod are connected to the base; the clamping support rod and the pre-clamping support rod are arranged parallel to each other, and the length of the pre-clamping support rod is greater than the length of the clamping support rod; a clamping radial adjustment rod is connected to the clamping support rod; the other end of the clamping radial adjustment rod is connected to a clamping axial adjustment rod, and a clamping head is connected to the other end of the clamping axial adjustment rod; the pre-clamping support rod is connected to a pre-clamping radial adjustment rod; the other end of the pre-clamping radial adjustment rod is connected to a pre-clamping axial adjustment rod, and a pre-clamping head is connected to the other end of the pre-clamping axial adjustment rod; the pre-clamping axial adjustment rod... A sealing adjustment rod is connected in the middle; the sealing adjustment rod is horizontally positioned; the sealing adjustment rod has multiple connecting holes along its length for connecting with a sealing alignment rod; a sealing alignment rod for preventing the sealing block from flipping is perpendicular to the sealing adjustment rod; the sealing alignment rod adjusts the distance between the sealing alignment rod and the pre-tightening head by cooperating with different connecting holes; the side of the sealing adjustment rod has multiple through holes along its length for connecting with a sealing input rod; the sealing input rod is perpendicular to the sealing adjustment rod, and the length of the sealing input rod is less than the length of the sealing alignment rod; the end of the sealing input rod is a rectangular block that cooperates with the sealing groove to press the sealing block into the sealing groove.
2. The mounting fixture for the stator seal of a pitch bearing for a wind turbine generator as described in claim 1, characterized in that: One end of the pre-tightening head is a threaded rod that is threadedly connected to the pre-tightening axial adjustment rod, which can adjust the direction of the pre-tightening head; the other end of the pre-tightening head is a "U"-shaped hole for welding and fixing to the finished deep groove ball bearing.
3. The mounting fixture for the stator seal of a pitch bearing for a wind turbine generator as described in claim 1, characterized in that: One end of the clamping head is a threaded rod that is threadedly connected to the clamping axial adjustment rod, which can adjust the direction of the clamping head; the other end of the clamping head is a "U"-shaped hole for welding and fixing to the finished deep groove ball bearing.
4. The mounting fixture for the stator seal of a pitch bearing for a wind turbine generator as described in claim 1, characterized in that: The pre-tightening axial adjusting rod and the clamping axial adjusting rod are threaded rods at one end and cuboids at the other end, with threaded through holes on the side for connecting with the pre-tightening radial adjusting rod and the clamping radial adjusting rod.
5. The mounting fixture for the stator seal of a pitch bearing for a wind turbine generator as described in claim 1, characterized in that: The pre-tightening radial adjusting rod and the clamping radial adjusting rod are exactly the same, with one end being a threaded rod and the other end being a cuboid with a threaded through hole on the side. They are connected to the pre-tightening axial adjusting rod and the clamping axial adjusting rod using a nut.
6. The mounting fixture for the stator seal of a pitch bearing for a wind turbine generator as described in claim 1, characterized in that: One end of the pre-tightening axial adjustment rod is a threaded rod, which is connected to the pre-tightening radial adjustment rod with a nut to adjust the axial distance. The other end has a threaded hole along the center of the end face, which is connected to the pre-tightening head with a nut. The two sides of the middle position are flat, and there is a hole in the middle of the flat surface, which is connected to the sealing adjustment rod with a bolt.
7. The mounting fixture for the stator seal of a pitch bearing for a wind turbine generator as described in claim 1, characterized in that: The aforementioned axial adjustment rod has a threaded rod at one end, which is connected to the radial adjustment rod with a nut to adjust the axial distance. The other end has a threaded hole along the center of the end face, and a nut is used to fix the clamping head.
8. The mounting fixture for the stator seal of a pitch bearing for a wind turbine generator as described in claim 1, characterized in that: The base is a cuboid with all six sides flat. A threaded through hole is opened in the middle of the front for fixing to the blade root flange with bolts. Threaded through holes are opened on both sides of the top for fixing the pre-tightening axial adjustment rod and the clamping axial adjustment rod with nuts.