Main shaft bearing lubricating oil way structure and wind generating set
A simplified lubrication system for wind turbine main shaft bearings addresses structural complexity and cost issues by integrating lubrication channels, ensuring precise lubrication and improved reliability.
Patent Information
- Application Number
- CN202422335342.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Existing wind turbine main shaft bearings suffer from complex structures, numerous components, difficult assembly, poor lubrication, and high costs, which affect their reliability and lifespan.
A simplified lubrication system for wind turbine main shaft bearings with integrated lubrication channels in the bearing and seat, featuring a lubrication groove on the bearing outer circle, oil injection and drainage channels, and a lubrication oil slot with precise oil distribution to the bearing rollers.
The solution provides precise lubrication, reduces assembly complexity, enhances reliability, and lowers costs while maintaining bearing performance.
Smart Images
Figure CN223105064U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of main shaft bearings of wind turbines, in particular to a lubricating oil path structure of a main shaft bearing and a wind turbine generator set. Background Art
[0002] A wind turbine generator set is a mechanical device that converts wind energy into electrical energy. The main shaft bearing is one of the key components of a wind turbine generator set, and the stability of its operating state is directly related to the unit. The lubrication structure of the main shaft bearing needs to ensure sufficient and uniform lubrication inside the bearing, and its lubrication condition directly determines the reliability and service life of the bearing. However, the existing lubricating oil path structures adopted by main shaft bearings generally have defects such as complex structure, many components, complex assembly, poor lubrication effect, and high cost. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a lubricating oil path structure for a main shaft bearing, which has the advantages of simple structure, simple assembly, reliable performance, and low cost.
[0004] Another purpose of the utility model is to provide a wind turbine generator set.
[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:
[0006] A lubricating oil path structure of a main shaft bearing, wherein the main shaft bearing is installed between a main shaft and a bearing housing, and the main shaft bearing and the bearing housing are in interference fit; a circle of lubricating oil grooves is arranged on the outer peripheral surface of the bearing outer ring of the main shaft bearing, an oil injection hole is arranged at the top of the bearing housing and above the lubricating oil groove, a plurality of lubricating oil holes penetrating through its inner and outer walls are arranged at equal intervals along the circumferential direction on the bearing outer ring, and one end of the lubricating oil hole is communicated with the lubricating oil groove, and the other end extends to the bearing rollers of the main shaft bearing, and an oil drain hole is arranged at the bottom of the bearing housing.
[0007] Further, the number of the lubricating oil holes is 2 - 8.
[0008] Further, the diameter of the lubricating oil hole is 2 mm - 6 mm.
[0009] Further, the outer diameter of the main shaft bearing is 1500 mm - 4000 mm.
[0010] Further, the main shaft bearing is a single-row tapered roller bearing.
[0011] Another purpose of the utility model can be achieved by adopting the following technical solutions:
[0012] A wind turbine generator set includes the above-mentioned lubricating oil path structure of the main shaft bearing.
[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0014] 1. The lubricating oil path structure of the utility model is directly designed on the bearing housing and the main shaft bearing, which can make the lubricating oil spray more precisely into the bearing. The lubricating oil path structure is simple, reliable in performance and low in cost.
[0015] 2. The lubricating oil path structure of the utility model does not need to add other components, the assembly process is simple and reliable, and the assembly efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the lubricating oil path structure of the utility model.
[0017] Figure 2 is Figure 1 the partial enlarged view at A in
[0018] Figure 3 It is a partial schematic diagram of the outer ring of the bearing of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] In order to make the objectives, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are some but not all of the embodiments of the utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model.
[0020] Embodiment 1:
[0021] As Figures 1 to 3 shown, this embodiment provides a lubricating oil path structure for a main shaft bearing. The main shaft bearing 1 is a single-row tapered roller bearing, which is installed between the main shaft 4 and the bearing housing 5. The main shaft bearing 1 and the bearing housing 5 are in interference fit. A ring of lubricating oil grooves 201 is provided on the outer peripheral surface of the outer ring 2 of the main shaft bearing 1. An oil injection hole 501 is provided at the top of the bearing housing 5 and above the lubricating oil groove 201. A plurality of lubricating oil holes 202 penetrating the inner and outer walls are arranged at equal intervals along the circumferential direction on the outer ring 2 of the bearing, and one end of the lubricating oil hole 202 is communicated with the lubricating oil groove 201, and the other end extends to the bearing rollers 3 of the main shaft bearing 1. An oil drain hole 502 is provided at the bottom of the bearing housing 5.
[0022] The working principle of this embodiment is as follows: Lubricating oil is injected into the lubricating oil groove 201 through the oil injection hole 501 on the bearing housing 5. The lubricating oil in the lubricating oil groove 201 is sprayed onto the bearing rollers 3 through a plurality of lubricating oil holes 202, thus playing a lubricating role. Then, the lubricating oil flows to the bottom of the bearing housing 5 under the action of gravity and is discharged through the oil drain hole 502.
[0023] The number of the lubricating oil holes 202 is 2 to 8, and the diameter is 2 mm to 6 mm. Both the number and the diameter size can be set according to actual requirements.
[0024] The lubricating oil path structure of this embodiment can adapt to the outer diameter of the main shaft bearing being 1500 mm to 4000 mm, with strong bearing size compatibility and a wide adaptation range.
[0025] Embodiment 2:
[0026] This embodiment provides a wind turbine generator, including the main shaft bearing lubricating oil path structure described in Embodiment 1.
[0027] The above are only the preferred embodiments of the utility model patent, but the protection scope of the utility model patent is not limited thereto. Any person skilled in the art within the scope disclosed by the utility model patent, according to the technical solution of the utility model patent and the inventive concept of the utility model patent, makes equivalent substitutions or changes, all belong to the protection scope of the utility model patent.
Claims
1. A lubricating oil path structure for a spindle bearing, the spindle bearing being installed between a spindle and a bearing housing, and the spindle bearing and the bearing housing being in interference fit; characterized in that: An oil groove is provided on the outer peripheral surface of the outer ring of the main shaft bearing. An oil injection hole is provided at the top of the bearing seat and above the oil groove. A plurality of oil holes penetrating the inner and outer walls are circumferentially and equidistantly arranged on the outer ring of the bearing, and one end of the oil hole communicates with the oil groove, and the other end extends to the bearing rollers of the main shaft bearing. An oil drain hole is provided at the bottom of the bearing seat.
2. The lubricating oil path structure of the spindle bearing according to claim 1, wherein: The number of the oil holes is 2 to 8.
3. The lubricating oil path structure of the spindle bearing according to claim 2, wherein: The diameter of the oil holes is 2 mm to 6 mm.
4. The lubricating oil path structure of the main shaft bearing according to claim 1, characterized in that: The outer diameter of the main shaft bearing is 1500 mm to 4000 mm.
5. The spindle bearing lubricating oil path structure according to claim 1, wherein: The main shaft bearing is a single-row tapered roller bearing.
6. A wind turbine generator, characterized in that: It includes the lubricating oil path structure of the main shaft bearing according to any one of claims 1 to 5.