Front bearing outer ring dismounting tool applied to direct-drive type wind driven generator
By designing a disassembly fixture that includes a fixed bracket and electromagnetic induction heating, the problem of high replacement cost of the front bearing of MW-class direct-drive wind turbines was solved, enabling safe and efficient disassembly and replacement and reducing the frequency of equipment damage.
Patent Information
- Application Number
- CN202422078708.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The replacement cost of front bearing failure in MW-class direct-drive wind turbine generators is high, and the frequency of damage increases. Existing technologies make it difficult to disassemble and replace the bearings efficiently and safely.
Design a disassembly fixture including a fixed bracket, a gantry frame, a hollow jack, a double-ended stud, an outer ring welding plate, and a lead screw. Combined with an electromagnetic induction heating device, the outer ring of the front bearing is disassembled by heating and pressurizing.
It reduced dismantling costs, improved work efficiency, increased safety, reduced wind turbine downtime, and enhanced the value of the equipment.
Smart Images
Figure CN223493154U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of direct-drive wind turbines, specifically referring to a tooling for disassembling the outer ring of the front bearing of a direct-drive wind turbine. Background Technology
[0002] Currently, when the front bearing of a MW-class direct-drive wind turbine generator set in China malfunctions, it is replaced by hoisting it to the ground. This process is extremely costly. Furthermore, as the operating time of the unit increases, the frequency of damage to the front bearing of the direct-drive wind turbine generator set increases.
[0003] Therefore, this field study provides a high-performance tooling for disassembling the outer ring of the front bearing of a direct-drive wind turbine. Damaged front bearings can be replaced directly on the wind turbine using this tooling. This tooling is easy to carry and install, reduces replacement costs, improves work efficiency, and offers a high safety factor during disassembly, preventing injury to personnel or equipment. Utility Model Content
[0004] To solve the above problems, this utility model provides a tooling for disassembling the outer ring of the front bearing of a direct-drive wind turbine.
[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: A disassembly fixture for the outer ring of the front bearing of a direct-drive wind turbine is used for the front bearing of the wind turbine. The disassembly fixture includes a fixed bracket, a gantry frame, a hollow jack, double-ended studs, an outer ring welding plate, a lead screw one, and a lead screw two. The front bearing of the wind turbine has a uniformly annular array of threaded holes. Two sets of lead screw one are provided, and lead screw one is inserted into the threaded holes. The fixed bracket is sleeved on lead screw one. Three sets of outer ring welding plates are provided and welded to the surface of the outer ring of the front bearing of the wind turbine. Multiple sets of double-ended studs are provided and screwed into the outer ring welding plates. The double-ended studs are inserted into the gantry frame. The gantry frame is fastened to the fixed bracket and fixed by bolts. One end of lead screw two is inserted into the threaded hole, and the other end of lead screw two is fitted with a hollow jack.
[0006] As a preferred embodiment of this utility model, the three-axis end of the fixed bracket is provided with a through hole, and the other end of the second lead screw passes through the hollow jack and exits through the through hole.
[0007] As a preferred embodiment of this utility model, the portal frame and the hollow jack are both provided in three sets.
[0008] As a preferred technical solution of this utility model, an electromagnetic induction coil is pressed onto the shaft of the front bearing of the wind turbine generator, the electromagnetic induction heating device is started, the heating temperature does not exceed 100℃, and during the heating process, pressure is applied to three hollow jacks to pull out the outer ring of the front bearing of the wind turbine generator.
[0009] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure:
[0010] 1. Applicable to all MW-class direct-drive wind turbine generator sets, with low tooling cost, and can be directly promoted and used;
[0011] 2. Currently, using this tooling can reduce the cost of replacing bearings and reduce the downtime of wind turbines, thereby increasing power generation. As the operating years of wind turbines increase, the value of this tooling will further increase.
[0012] 3. Safe and reliable, easy to carry, and saves effort when disassembling the outer ring. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of a disassembly fixture for the outer ring of the front bearing of a direct-drive wind turbine proposed in this utility model.
[0014] Figure 2 This is a side view of a tooling for disassembling the outer ring of the front bearing of a direct-drive wind turbine, as proposed in this utility model.
[0015] Among them, 1. Wind turbine front bearing, 2. Fixed bracket, 3. Gantry frame, 4. Hollow jack, 5. Double-ended stud, 6. Outer ring welding plate, 7. Lead screw one, 8. Lead screw two, 9. Threaded hole, 10. Through hole. Detailed Implementation
[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.
[0018] like Figure 1-2As shown, this utility model provides a disassembly fixture for the outer ring of the front bearing of a direct-drive wind turbine. The disassembly fixture is used for the front bearing 1 of the wind turbine and includes a fixed bracket 2, a gantry frame 3, a hollow jack 4, a double-ended stud 5, an outer ring welding plate 6, a lead screw 7, and a lead screw 8. The front bearing 1 of the wind turbine has a uniformly arranged annular array of threaded holes 9. Two sets of lead screws 7 are provided, and each lead screw 7 is inserted into one of the threaded holes 9. The fixed bracket 2 is sleeved on the lead screw 7. Three sets of outer ring welding plates 6 are provided. Welded to the outer ring surface of the front bearing 1 of the wind turbine, multiple sets of double-ended studs 5 are provided and screwed into the outer ring welding plate 6. The double-ended studs 5 are inserted into the gantry frame 3. The gantry frame 3 is fastened to the fixed bracket 2 and fixed by bolts. One end of the second lead screw 8 is inserted into the threaded hole 9. The other end of the second lead screw 8 passes through the hollow jack 4. The three-axis end of the fixed bracket 2 is provided with a through hole 10. The other end of the second lead screw 8 passes through the hollow jack 4 and exits from the through hole 10. Three sets of both the gantry frame 3 and the hollow jack 4 are provided.
[0019] like Figure 1-2 As shown, an electromagnetic induction coil is pressed onto the shaft of the front bearing 1 of the wind turbine generator. The electromagnetic induction heating device is started, and the heating temperature does not exceed 100℃. During the heating process, pressure is applied to the three hollow jacks 4 to pull out the outer ring of the front bearing 1 of the wind turbine generator.
[0020] In practical use, two lead screws 7 are installed at the 12 o'clock position and inserted into the threaded holes 9. The fixed bracket 2 is hoisted onto the lead screws 7. The double-ended studs 5 are screwed into the three outer ring welding plates 6. The double-ended studs 5 are inserted into the gantry frame 3 and their positions are adjusted. The gantry frame 3 is fixed to the fixed bracket 2 with bolts. The outer ring welding plates 6 are welded to the outer ring surface of the wind turbine front bearing 1. The lead screw 8 and the hollow jack 4 are installed. One end of the lead screw 8 is inserted into the threaded hole 9, and the other end passes through the hollow jack 4 and out through the through hole 10 of the fixed bracket 2. An electromagnetic induction coil is pressed onto the shaft of the wind turbine front bearing 1. The electromagnetic induction heating equipment is started, and the heating temperature does not exceed 100℃. During the heating process, pressure is applied to the three hollow jacks 4 to pull out the outer ring of the wind turbine front bearing 1.
[0021] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A tooling for disassembling the outer ring of the front bearing of a direct-drive wind turbine generator, characterized in that: The disassembly fixture for the front bearing of a wind turbine includes a fixed bracket (2), a gantry frame (3), a hollow jack (4), a double-ended stud (5), an outer ring welding plate (6), a lead screw one (7), and a lead screw two (8). The front bearing (1) of the wind turbine has a uniformly arranged annular array of threaded holes (9). Two sets of lead screw one (7) are provided. The lead screw one (7) is inserted into the threaded hole (9). The fixed bracket (2) is sleeved on the lead screw one (7). The outer ring welding plate (6) is provided in three sets and welded to the outer ring surface of the wind turbine front bearing (1). The double-headed studs (5) are provided in multiple sets and screwed into the outer ring welding plate (6). The double-headed studs (5) are inserted into the portal frame (3). The portal frame (3) is fastened to the fixed bracket (2) and fixed by bolts. One end of the second lead screw (8) is inserted into the threaded hole (9). The other end of the second lead screw (8) is fitted with a hollow jack (4).
2. The fixture for disassembling the outer ring of the front bearing of a direct-drive wind turbine according to claim 1, characterized in that: The fixed bracket (2) has a through hole (10) at its three-axis end, and the other end of the screw rod passes through the hollow jack (4) and exits through the through hole (10).
3. The fixture for disassembling the outer ring of the front bearing of a direct-drive wind turbine according to claim 1, characterized in that: The portal frame (3) and the hollow jack (4) are each equipped with three sets.
4. The fixture for disassembling the outer ring of the front bearing of a direct-drive wind turbine according to claim 1, characterized in that: An electromagnetic induction coil is pressed onto the shaft of the front bearing (1) of the wind turbine generator.