Dismounting tool for oil slinger of high-speed shaft of wind power gear box
By designing a disassembly fixture for the oil slinger ring of the high-speed shaft of the wind turbine gearbox, and using mechanical methods to clamp and remove the oil slinger ring, the problems of high difficulty in heating control and high safety hazards in the existing technology are solved, and a safe and reliable disassembly effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING AVIS TRANSMISSION TECH
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-08
AI Technical Summary
Existing technologies present challenges in controlling the heating of the oil slinger ring on the high-speed shaft of a wind turbine gearbox, including high safety risks and potential damage to the high-speed shaft.
A disassembly fixture for the oil slinger ring of the high-speed shaft of a wind turbine gearbox was designed. The flange of the oil slinger ring is clamped by the clamping fixture plate, and the oil slinger ring is removed from the high-speed shaft by the mechanical action of the driving fixture bolts and double-ended studs.
It enables safe, reliable, and single-person operation for disassembling the oil slinger ring, reducing the risk of damage to the high-speed shaft, lowering labor costs, and improving operational efficiency.
Smart Images
Figure CN224209860U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wind turbine gearbox repair, specifically to a disassembly tool for the oil slinger ring of the high-speed shaft of a wind turbine gearbox. Background Technology
[0002] Due to its advantages such as being pollution-free and having low construction costs, wind power generation has experienced rapid development in recent years.
[0003] The high-speed shaft system inside the wind turbine gearbox serves as the output shaft system. Due to its high rotational speed, the high-speed shaft gears experience the highest failure rate among all gear components. If pitting or slight indentations are found on the high-speed shaft teeth, the teeth can be reground. Before regrinding, all small components such as bearings, nuts, and oil slingers mounted on the high-speed shaft need to be removed. To prevent oil leakage, the oil slinger is installed on the high-speed shaft diameter with an interference fit, making direct removal somewhat difficult. Typically, the oil slinger is removed by heating during disassembly. However, temperature control is difficult, and excessively high temperatures can damage the high-speed shaft itself, affecting its quality.
[0004] The technical solution of existing technology 1 is as follows:
[0005] The oil slinger is removed from the high-speed shaft by wrapping a heating element around its outer circumference. Once the oil slinger has heated up, the flange of the oil slinger is tapped.
[0006] The disadvantages of existing technology 1 are:
[0007] 1. The heating time of the electric heating element is difficult to control. If the heating time is too short, the oil slinger ring will not expand sufficiently, and it will be impossible to remove the oil slinger ring from the high-speed shaft by tapping the flange. Further heating is required, wasting time. If the heating time is too long, the heat will be conducted to the high-speed shaft body, causing the shaft diameter to expand. Therefore, a prolonged heating time also makes disassembly difficult.
[0008] 2. Tapping the oil slinger flange can easily leave scratches on the high-speed shaft body if the tapping occurs, and the tapping process also poses a certain danger to the workers.
[0009] The technical solution of existing technology 2 is as follows:
[0010] Using a flame torch, aim the flame at the outer circumference of the oil slinger ring and remove it by continuously heating it.
[0011] The disadvantages of the existing technology 2 are:
[0012] 1. The flame from the flame torch is very hot, requiring the high-speed shaft to be suspended and constantly rotated to prevent localized overheating. This necessitates two people operating the torch simultaneously. Furthermore, improper operation of the flame torch can injure workers. Utility Model Content
[0013] This utility model provides a disassembly tool for the oil slinger ring of the high-speed shaft of a wind turbine gearbox. Its purpose is to overcome the shortcomings of the prior art and provide a disassembly tool that can be operated by a single person, is highly versatile, safe and reliable, and will not damage the high-speed shaft.
[0014] The technical solution adopted by this utility model to solve its technical problem is:
[0015] A disassembly tooling for the oil slinger ring on the high-speed shaft of a wind turbine gearbox, wherein the oil slinger ring is interference-fitted onto the shaft diameter of the high-speed shaft, characterized in that:
[0016] The clamping fixture plate clamps the oil slinger ring, and the upper surface of the clamping fixture plate abuts against the lower surface of the flange of the oil slinger ring;
[0017] The drive fixture plate located above the end face of the high-speed shaft has a threaded hole in the middle. The drive fixture bolt is screwed into the threaded hole and passes through the drive fixture plate. The bottom end of the drive fixture bolt contacts the end face of the high-speed shaft. The drive fixture plate has through holes on both sides of the threaded hole. Two double-ended studs pass through the through holes on both sides of the threaded hole. The lower end of the double-ended studs is screwed into the corresponding threaded hole of the clamping fixture plate. The upper end of the double-ended studs is screwed with a round nut. The round nut is tightly pressed against the upper surface of the drive fixture plate, thereby fixing the drive fixture plate and the clamping fixture plate together.
[0018] The clamping fixture plate is divided into two parts, which are located on both sides of the high-speed shaft. Each clamping fixture plate has a transverse through hole at both ends. There are two double-ended studs, which pass through the corresponding transverse through holes of the two clamping fixture plates. A round nut is screwed into both ends of each double-ended stud. The round nut is tightly against the outside of the clamping fixture plate. The two clamping fixture plates are tightly against the oil slinger ring and clamp the oil slinger ring.
[0019] Both clamping tool plates have a recessed stepped plane on their inner side. The two stepped planes face each other and are located below the flange of the oil slinger ring. The stepped planes abut against the lower surface of the flange.
[0020] The through holes on both sides of the threaded hole of the drive tooling plate are oblong holes.
[0021] The advantages of this utility model are:
[0022] 1. Simple structure, easy to process and manufacture;
[0023] 2. It has strong versatility and can be applied to the disassembly of oil slingers on high-speed shafts within a certain range, saving costs;
[0024] 3. The oil slinger ring of the high-speed shaft is removed by mechanical means, which reduces the risk of quality problems caused by heating of the high-speed shaft. At the same time, there are no safety hazards in operating this tool.
[0025] 4. It can be operated by a single person, effectively saving labor costs. Attached Figure Description
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0027] Figure 1 An illustration showing the effect of installing an oil slinger ring on a high-speed shaft;
[0028] Figure 2 This is a diagram illustrating the effect of installing the tooling of this utility model onto a high-speed shaft.
[0029] Figure 3 for Figure 2 A magnified view of section B in the image;
[0030] Figure 4 for Figure 3 The C-direction view in the middle;
[0031] Figure 5 for Figure 4 BB view in the middle. Detailed Implementation
[0032] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort. To facilitate understanding of this utility model, a more detailed description of this utility model will be provided below in conjunction with the accompanying drawings and specific embodiments.
[0033] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown:
[0035] This utility model is a disassembly tool for the oil slinger ring of the high-speed shaft of a wind turbine gearbox.
[0036] The oil slinger ring 2 is an interference fit installed on the shaft diameter on one side of the high-speed shaft 1.
[0037] It has two opposing clamping tool plates 7, and the inner side of the clamping tool plate 7 has a recessed stepped plane 71.
[0038] Two clamping tool plates 7 are located on both sides of the high-speed shaft 1, and two stepped planes 71 are opposite each other. The stepped planes 71 are located below the flange 21 of the oil slinger ring 2 and abut against the lower surface of the flange 21.
[0039] Each clamping tool plate 7 has a transverse through hole 71 at both ends.
[0040] There are two double-ended studs 8, which pass through the transverse through holes 71 corresponding to the two clamping tool plates 7 respectively. A round nut is screwed at both ends of each double-ended stud 8. By tightening the round nut 9, the round nut 9 is pressed against the outside of the clamping tool plate 7, and the clamping tool plates 7 on both sides press against the oil slinger ring 2 and clamp the oil slinger ring 2.
[0041] Each clamping fixture plate 7 has a threaded hole 73 pre-machined on its upper surface in the middle. The drive fixture plate 11, located above the end face of the high-speed shaft 1, is a slender fixture plate. A threaded hole 111 is pre-machined at the center of the drive fixture plate 11, and a waist-shaped hole 112 is pre-machined symmetrically on both sides of the threaded hole 111. Two double-ended studs 10 are provided, with their lower ends screwed into the threaded holes 73 of the clamping fixture plate 7. The double-ended studs 10 pass through the waist-shaped holes 112 of the drive fixture plate 11.
[0042] The drive tooling bolt 13 is screwed into the pre-machined threaded hole 111 at the center of the drive tooling plate 11 and passes through the drive tooling plate 11. The bottom end of the screw of the drive tooling bolt 13 directly contacts the end face of the high-speed shaft 1. After controlling the distance between the tooling plate 2 and the end face of the high-speed shaft 1, a round nut 12 is screwed onto the upper end of the double-ended stud 10. The round nut 12 is tightly pressed against the upper surface of the drive tooling plate 11, thereby fixing the drive tooling plate 11 and the two clamping tooling plates 7 together.
[0043] Drive the tooling bolt 13 by using a wrench.
[0044] Since the drive tooling bolt 13 is threadedly engaged with the drive tooling plate 11, the bottom end of the screw of the drive tooling bolt 13 abuts against the end face of the high-speed shaft 1. As a result, the drive tooling plate 11 moves upward, and the two clamping tooling plates 7 also move upward.
[0045] Since the clamping fixture plates 7 on both sides clamp the oil slinger ring 2, and the stepped plane 71 of the clamping fixture plate 7 abuts against the lower surface of the flange 21, the oil slinger ring 2 is pulled by the two clamping fixture plates 7, and finally the oil slinger ring 2 is removed from the shaft diameter of the high-speed shaft 1.
[0046] Existing methods for disassembling the high-speed shaft oil slinger ring involve heating with an electric heating element or using a flame torch. These methods not only pose risks to the quality of the high-speed shaft itself but also create safety hazards for the operators. The tooling of this invention allows for purely mechanical disassembly, effectively ensuring the quality of the high-speed shaft and allowing for operation by a single person without causing harm.
[0047] This utility model tooling can be used for the removal of oil slinger rings on high-speed shafts within a certain size range without the need to switch tooling back and forth. Furthermore, this utility model tooling contacts the flange of the oil slinger ring through two disc planes, which makes it more stable and saves time and effort during operation.
[0048] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A disassembly fixture for the oil slinger ring of the high-speed shaft of a wind turbine gearbox, wherein the oil slinger ring is interference-fitted onto the shaft diameter of the high-speed shaft, characterized in that: The clamping fixture plate clamps the oil slinger ring, and the upper surface of the clamping fixture plate abuts against the lower surface of the flange of the oil slinger ring. The drive fixture plate located above the end face of the high-speed shaft has a threaded hole in the middle. The drive fixture bolt is screwed into the threaded hole and passes through the drive fixture plate. The bottom end of the drive fixture bolt contacts the end face of the high-speed shaft. The drive fixture plate has through holes on both sides of the threaded hole. Two double-ended studs pass through the through holes on both sides of the threaded hole. The lower end of the double-ended studs is screwed into the corresponding threaded hole of the clamping fixture plate. The upper end of the double-ended studs is screwed with a round nut. The round nut abuts against the upper surface of the drive fixture plate, thereby fixing the drive fixture plate and the clamping fixture plate together.
2. The disassembly fixture for the high-speed shaft oil slinger ring of the wind turbine gearbox as described in claim 1, characterized in that: The clamping fixture plate is divided into two parts, which are located on both sides of the high-speed shaft. Each clamping fixture plate has a transverse through hole at both ends. There are two double-ended studs, which pass through the corresponding transverse through holes of the two clamping fixture plates. A round nut is screwed into both ends of each double-ended stud. The round nut is tightly against the outside of the clamping fixture plate. The two clamping fixture plates are tightly against the oil slinger ring and clamp the oil slinger ring.
3. The disassembly fixture for the high-speed shaft oil slinger ring of the wind turbine gearbox as described in claim 2, characterized in that: Both clamping tool plates have a recessed stepped plane on their inner side. The two stepped planes face each other and are located below the flange of the oil slinger ring. The stepped planes abut against the lower surface of the flange.
4. The disassembly fixture for the high-speed shaft oil slinger ring of the wind turbine gearbox as described in claim 1, characterized in that: The through holes on both sides of the threaded hole of the drive tooling plate are oblong holes.