Yaw gear ring of wind generating set
By using a rolling coated lubricant structure and rust-resistant and wear-resistant layer in the yaw ring of the wind turbine, the problem of reduced lubrication of the yaw outer teeth surface is solved, and the smoothness and wear resistance of gear meshing rotation are achieved.
Patent Information
- Application Number
- CN202422060385.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-24
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-24
AI Technical Summary
When the yaw ring gear of existing wind turbines is used for a long time, the lubrication of the yaw outer teeth surface is reduced, resulting in dry and wear at the meshing connection, reducing the smoothness of the gear meshing rotation.
A yaw gear ring for a wind turbine is designed, and ten sets of rolling coated lubricating oil structures are used, including oil storage tanks, ball chucks, oil replenishment sinks and sealing screw pins. The lubricating oil is evenly applied to the meshing part through the rolling action of the oil rollers, and the wear resistance of the chuck is improved through the rust-resistant and wear-resistant layer.
The lubrication degree of the yaw external teeth and the meshing connection is improved, drying and wear are avoided, and the smooth self-lubricity of the yaw ring of the wind turbine is enhanced when the gears are meshed and rotated.
Smart Images
Figure CN223019330U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of yaw rings, in particular to a yaw ring of a wind turbine generator set. Background Technique
[0002] A wind turbine generator set is a device that converts the kinetic energy of wind into electrical energy using wind energy. As a renewable energy source, wind power generation has the advantages of being clean, pollution-free, and sustainable, and is an important part of the global energy transformation.
[0003] The yaw ring of a wind turbine generator set is a key component in the yaw system of the wind turbine generator set, and its function is equivalent to that of a large sliding bearing.
[0004] The yaw ring is located at the bottom of the nacelle base of the wind turbine generator set. The lower end is fixedly connected to the tower barrel through bolts, and the upper part supports the entire nacelle mechanism through a sliding surface. It meshes with the output gears of four yaw reducers around it. Driven by the yaw motor, the entire nacelle mechanism rotates slowly to adjust the direction of the impeller of the wind turbine generator set, ensuring that the wind wheel is always in the upwind state.
[0005] The yaw ring on the wind turbine generator set generally consists of a yaw ring body, a bearing retaining ring, yaw external teeth, and a meshing inner groove.
[0006] Currently, for the yaw ring on the existing wind turbine generator set, during long-term use, the lubrication degree on the surface of the yaw external teeth decreases, which will greatly weaken the meshing lubrication degree between the yaw external teeth and the gears of the externally preset meshing-connected yaw reducer, causing dry wear, and further greatly reducing the smooth self-lubricity of the yaw ring body on the wind turbine generator set during gear meshing rotation. Content of the Utility Model
[0007] The purpose of the utility model is to solve the above-mentioned disadvantages in the prior art, and to propose a yaw ring of a wind turbine generator set.
[0008] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0009] Design a yaw ring of a wind turbine generator set, including a yaw ring body, a bearing retaining ring is provided on the yaw ring body, and yaw external teeth and a meshing inner groove are arranged on the outer side wall of the yaw ring body;
[0010] An oil storage groove and a ball card slot are opened in the yaw ring body, an oil-rolling ball is rollingly clamped in the ball card slot, an oil replenishment sink is opened on the yaw ring body, a sealing screw pin is arranged in the oil replenishment sink, a screw pin cap is arranged on the sealing screw pin, an oil-resistant sealing ring is arranged on the screw pin cap, and a first knife card slot and a second knife card slot are opened on the screw pin cap;
[0011] The sealing screw pin is provided with a chamfered surface, and the inner groove walls of the first cutter groove and the second cutter groove are both provided with rust-resistant and wear-resistant layers.
[0012] Furthermore, the rolling oil beads and the oil replenishing sink are in a group, and there are a total of ten groups arranged circumferentially. The rolling oil beads are rolling and clamped in the ball groove.
[0013] Furthermore, the oil storage tank is respectively communicated with the ball groove and the oil replenishing sink, and the upper end surface of the screw cap is not higher than the oil replenishing sink.
[0014] Furthermore, the oil-resistant sealing ring is arranged at the bottom end of the screw cap. The cross-section of the oil-resistant sealing ring is trapezoidal and is in extrusion contact with the inner groove wall of the oil replenishing sink.
[0015] Furthermore, the cross-section of the first cutter groove is an inner hexagonal groove structure, and the cross-section of the second cutter groove is a cross-shaped groove structure.
[0016] Furthermore, the rust-resistant and wear-resistant layers are uniformly coated along the inner groove walls of the first cutter groove and the second cutter groove. The rust-resistant and wear-resistant layers are fluorocarbon resin coatings with a thickness of 60 to 70 microns.
[0017] Furthermore, the sealing screw pin is threadedly connected to the yaw gear ring body, and the chamfered surface is arranged at the end corner of the sealing screw pin.
[0018] A yaw gear ring of a wind turbine generator set proposed by the present utility model has the following beneficial effects:
[0019] 1. By arranging ten groups of rolling and lubricating oil structures on the yaw gear ring body, during long-term use, lubricating oil can be rolled and coated on the meshing part of the outer yaw teeth and the gears of the externally preset meshing-connected yaw reducer, improving the lubrication degree of the meshing part of the outer yaw teeth and the gears of the externally preset meshing-connected yaw reducer, avoiding dry wear, and further improving the smooth self-lubrication of the yaw gear ring body on the wind turbine generator set during gear meshing rotation.
[0020] 2. By arranging an oil replenishing sink with a sealing screw pin on the yaw gear ring body and arranging a first cutter groove and a second cutter groove on the screw cap, the sealing screw pin can be conveniently removed and the lubricating oil in the oil storage tank can be replenished.
[0021] 3. By arranging rust-resistant and wear-resistant layers on the inner groove walls of the first cutter groove and the second cutter groove, the rust resistance, wear resistance and durability of the first cutter groove and the second cutter groove are further improved. Description of the Drawings
[0022] Figure 1 is an exploded schematic diagram of the sealing screw pin of the present utility model in an unthreaded installation state;
[0023] Figure 2 is a three-dimensional schematic diagram of the threaded installation state of the sealed screw pin of the present utility model;
[0024] Figure 3 of the present utility model Figure 2 is a partial enlarged view of the structure of the rolling oil bead and the oil replenishing sink at position A in;
[0025] Figure 4 is a three-dimensional schematic diagram of the sealed screw pin with an oil-resistant sealing ring structure of the present utility model;
[0026] Figure 5 is a front view schematic diagram of the overall structure of the present utility model;
[0027] Figure 6 of the present utility model Figure 5 is the sectional view taken along line B-B in.
[0028] In the figure: 1 yaw gear ring body; 11 bearing retaining ring; 2 yaw external teeth; 3 meshing inner groove; 4 rolling oil bead; 5 oil replenishing sink; 6 sealed screw pin; 61 rounded surface; 7 screw pin nut; 71 oil-resistant sealing ring; 72 first knife groove; 73 second knife groove; 74 rust-resistant and wear-resistant layer; 8 oil storage tank; 81 ball groove. Specific embodiments
[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0030] Referring to Figures 1-6 , a yaw gear ring of a wind turbine generator includes a yaw gear ring body 1, a bearing retaining ring 11 is provided on the yaw gear ring body 1, and a yaw external tooth 2 and a meshing inner groove 3 are provided on the outer side wall of the yaw gear ring body 1;
[0031] An oil storage tank 8 and a ball groove 81 are formed in the yaw gear ring body 1, a rolling oil bead 4 is rotatably clamped in the ball groove 81, an oil replenishing sink 5 is formed on the yaw gear ring body 1, a sealed screw pin 6 is arranged in the oil replenishing sink 5, a screw pin nut 7 is provided on the sealed screw pin 6, an oil-resistant sealing ring 71 is provided on the screw pin nut 7, and a first knife groove 72 and a second knife groove 73 are formed on the screw pin nut 7;
[0032] The sealing screw pin 6 is provided with a chamfered surface 61. Wear-resistant and rust-resistant layers 74 are provided on the inner groove walls of the first cutter groove 72 and the second cutter groove 73. The yaw ring body 1 is the yaw ring of a wind turbine generator. The bearing retaining ring 11, the yaw external teeth 2, and the meshing inner groove 3 described in this patent are all related structures of the yaw ring body 1 and are prior art. Some prior structures are not drawn and labeled and will not be elaborated.
[0033] The rolling oil beads 4 are arranged at the central part of the meshing inner groove 3. When meshing and driving with the gear of the externally preset meshing yaw reducer, the rolling oil beads 4 at the central part are squeezed and rotated, realizing the comprehensive and effective self-lubricating coating of the lubricating oil in the oil storage tank 8.
[0034] The rolling oil beads 4 and the oil replenishing sink 5 are in a group, and there are a total of ten groups arranged in a circumference, realizing the uniform lubricating oil coating on the meshing part between the yaw external teeth 2 and the gear of the externally preset meshing yaw reducer. The rolling oil beads 4 are made of hard alloy steel, with high strength, no deformation, and resistance to oil and corrosion.
[0035] The rolling oil beads 4 are rolling and clamped in the ball groove 81, ensuring that the rolling oil beads 4 roll in the ball groove 81 and will not break away at the same time.
[0036] The oil storage tank 8 is respectively communicated with the ball groove 81 and the oil replenishing sink 5. The upper end surface of the screw pin cap 7 is not higher than the oil replenishing sink 5, avoiding the collision between the protruding screw pin cap 7 and external structures.
[0037] The oil-resistant sealing ring 71 is arranged at the bottom end of the screw pin cap 7. The cross-section of the oil-resistant sealing ring 71 is a trapezoidal structure and is in extrusion contact with the inner groove wall of the oil replenishing sink 5. The oil-resistant sealing ring 71 is made of HNBR hydrogenated nitrile rubber, with excellent oil resistance and high temperature resistance, and has high elastic extrusion sealing performance to avoid oil leakage.
[0038] The cross-section of the first cutter groove 72 is an inner hexagonal groove structure, and the cross-section of the second cutter groove 73 is a cross-shaped groove structure, which can realize the disassembly and assembly of the sealing screw pin 6 by using an inner hexagonal wrench or a cross screwdriver respectively, improving the disassembly and assembly flexibility of the sealing screw pin 6.
[0039] The wear-resistant and rust-resistant layers 74 are uniformly coated along the inner groove walls of the first cutter groove 72 and the second cutter groove 73. The wear-resistant and rust-resistant layers 74 are fluorocarbon resin coatings with a thickness of 60 to 70 microns. The fluorocarbon resin coating has excellent weather resistance and corrosion resistance, and has high abrasion resistance.
[0040] The sealing screw pin 6 is threadedly connected to the yaw ring body 1, realizing the threaded fastening between the sealing screw pin 6 and the yaw ring body 1, and further ensuring the tight extrusion seal between the oil-resistant sealing ring 71 and the oil replenishing sink 5.
[0041] The rounded surface 61 is provided at the corner of the end of the sealing pin 6. The provision of the rounded surface 61 can greatly improve the smoothness of the sealing pin 6 passing through the oil replenishing sink 5.
[0042] Working mode: During long-term use, the meshing part of the yaw external teeth 2 and the gear of the externally preset meshing yaw reducer will drive the rolling oil beads 4 to rotate. The rotating rolling oil beads 4 will evenly roll and coat the lubricating oil stored in the oil storage tank 8 for lubrication, improving the lubrication degree of the meshing part of the yaw external teeth 2 and the gear of the externally preset meshing yaw reducer, avoiding dry wear, and further improving the smooth self-lubrication of the yaw gear ring body 1 on the wind turbine during gear meshing rotation.
[0043] Moreover, by inserting an internal hexagon wrench into the first cutter slot 72 and rotating counterclockwise, or by inserting a cross screwdriver into the second cutter slot 73 and rotating counterclockwise, the whole of the screw cap 7 and the sealing pin 6 can be driven to rotate counterclockwise. After the sealing pin 6 is withdrawn from the oil replenishing sink 5 through screw transmission, the oil replenishing sink 5 can be exposed, and then the operation of replenishing lubricating oil into the oil replenishing sink 5 can be carried out, which is very convenient.
[0044] In addition, by providing a rust-resistant and wear-resistant layer 74 on the inner groove walls of the first cutter slot 72 and the second cutter slot 73, the rust-resistant, wear-resistant and durability of the first cutter slot 72 and the second cutter slot 73 are further improved.
[0045] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A yaw gear ring of a wind turbine generator set, comprising a yaw gear ring body (1), characterized in that: A bearing clamping ring (11) is provided on the yaw gear ring body (1), and a yaw external tooth (2) and an engaging internal groove (3) are provided on the outer side wall of the yaw gear ring body (1); The yaw gear ring body (1) is provided with an oil storage groove (8) and a ball bearing groove (81), an oil ball (4) is rollingly engaged in the ball bearing groove (81), the yaw gear ring body (1) is provided with an oil replenishing groove (5), a sealing screw pin (6) is arranged in the oil replenishing groove (5), the sealing screw pin (6) is provided with a screw pin nut (7), the screw pin nut (7) is provided with an oil-resistant sealing ring (71), and the screw pin nut (7) is provided with a first knife retaining groove (72) and a second knife retaining groove (73); The sealing screw pin (6) is provided with a chamfered surface (61), and the inner groove walls of the first knife clamping groove (72) and the second knife clamping groove (73) are both provided with a rust-resistant and wear-resistant layer (74).
2. The yaw gear ring of a wind turbine generator set according to claim 1, characterized in that: The rolling oil balls (4) and the oil replenishing sink grooves (5) form a group, with a total of ten groups arranged in a circle. The rolling oil balls (4) are rollingly engaged in the ball engaging grooves (81).
3. The yaw gear ring of a wind turbine generator set according to claim 1, characterized in that: The oil storage groove (8) is respectively connected to the ball bearing groove (81) and the oil replenishing groove (5), and the upper end surface of the screw cap (7) is not higher than the oil replenishing groove (5).
4. The yaw gear ring of a wind turbine generator set according to claim 1, characterized in that: The oil-resistant sealing ring (71) is arranged at the bottom end of the screw cap (7); the cross section of the oil-resistant sealing ring (71) is a trapezoidal structure and is in extrusion contact with the inner groove wall of the oil replenishing groove (5).
5. The yaw gear ring of a wind turbine generator set according to claim 1, characterized in that: The cross-section of the first knife clamping groove (72) is a hexagonal groove structure, and the cross-section of the second knife clamping groove (73) is a cross-shaped groove structure.
6. The yaw gear ring of a wind turbine generator set according to claim 1, characterized in that: The rust-resistant and wear-resistant layer (74) is evenly coated along the inner groove walls of the first knife clamping groove (72) and the second knife clamping groove (73); the rust-resistant and wear-resistant layer (74) is a fluorocarbon resin coating and has a thickness of sixty to seventy micrometers.
7. The yaw gear ring of a wind turbine generator set according to claim 1, characterized in that: The sealing screw pin (6) is threadedly connected to the yaw gear ring body (1), and the chamfered surface (61) is arranged at the end corner of the sealing screw pin (6).