Turbine and extension shaft disassembling tool for aero-engine
By designing the turbine and extension shaft disassembly tooling, using the push bolts and baffle structure, combined with the principle of thermal expansion and contraction, the time-consuming and labor-intensive disassembly of the turbine and extension shaft is solved, and a stable and reliable disassembly process is achieved, avoiding damage to parts.
Patent Information
- Application Number
- CN202421671019.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In the prior art, the disassembly process between the turbine and the extension shaft is time-consuming and labor-intensive, and is prone to damage to parts and property losses.
A turbine and extension shaft disassembly tooling is designed, using the push bolt and baffle structure, combined with the principle of thermal expansion and contraction, the extension shaft is pushed out through the rotation force to avoid knock damage, and combined with the heat gun and cold substance to heat and cool to facilitate separation.
A convenient, time-saving and labor-saving disassembly process is achieved, avoiding deformation and damage of parts, and improving the stability and efficiency of disassembly.
Smart Images
Figure CN223160397U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine assembly, and particularly relates to a disassembly tool for a turbine and an extension shaft of an aeroengine. Background Art
[0002] When assembling a micro turbojet engine, to meet the assembly requirements, the turbine component and the extension shaft component are assembled together by an interference fit method; when disassembling the micro turbojet engine, the turbine component and the extension shaft component need to be separated for data detection; the traditional disassembly method is to lean one end of the turbine assembly against a fixed step, use a rubber hammer to strike the top end of the extension shaft component, and use a strong external force to separate the two parts, which is time-consuming and laborious. Moreover, when striking the extension shaft, it is possible that the rubber hammer does not meet the requirements and a steel hammer needs to be used for striking, but the parts may be damaged or scrapped during the striking, resulting in losses to the company's property. Content of the Utility Model
[0003] Aiming at the above deficiencies of the prior art, the utility model provides a disassembly tool for a turbine and an extension shaft of an aeroengine, which solves the problem of difficult disassembly of the turbine and the extension shaft.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] Provide a disassembly tool for a turbine and an extension shaft of an aeroengine, which includes a tooling bottom plate. A limiting hole is arranged on the tooling bottom plate to facilitate the extension shaft to pass through. The tooling bottom plate is detachably connected to a tooling top plate through a plurality of connecting columns. A threaded hole is arranged on the tooling top plate and a jacking bolt is fitted thereon. The threaded hole and the limiting hole are coaxially arranged.
[0006] Further, slots are opened on both sides of the tooling bottom plate. The inner ends of the slots are communicated with the limiting hole, and baffles are movably inserted into the slots.
[0007] Further, a sleeve is arranged on the end face of the tooling bottom plate far from the tooling top plate. The port of the sleeve is connected to the end face of the tooling top plate, and an avoidance hole is arranged at the bottom of the sleeve to facilitate the extension shaft to pass through.
[0008] Further, a heating hole for avoiding a hot air gun is arranged on the tooling top plate.
[0009] Further, the plurality of connecting columns are evenly distributed in the circumferential direction of the tooling bottom plate, and the tooling top plate and the connecting columns are fastened by connecting bolts.
[0010] Further, the radial dimension of the limiting hole is matched with the outer diameter of the bearing sleeved on one end of the extension shaft close to the turbine.
[0011] Furthermore, the radial dimension of the push bolt is smaller than that of the engaging part between the extension shaft and the turbine, and the radial dimension of the limiting hole is smaller than that of the turbine.
[0012] Furthermore, an internal hexagonal socket head is provided at one end of the push bolt away from the tooling base plate.
[0013] The beneficial effects of the present utility model are as follows:
[0014] 1. Compared with the traditional method of disassembling the turbine and the extension shaft completely relying on manpower, in this solution, the extension shaft is pushed out by the rotational force of the push bolt, which is convenient to operate, time-saving and labor-saving, and has strong stability and reliability; at the same time, it avoids the deformation or even damage of the extension shaft caused by knocking.
[0015] 2. In this solution, the baffle can support the bearing sleeved on the end of the extension shaft close to the turbine, so that the turbine can be rotated by rotating the extension shaft, so that the hot air gun can uniformly heat the rotating turbine through the heating hole; at the same time, cold substances such as dry ice can be added to the sleeve to cool the extension shaft, so as to utilize the principle of thermal expansion and contraction, so that it is easier to separate the turbine and the extension shaft subsequently; then the baffle can be pulled out to make the turbine and the extension shaft fall, and make the turbine abut against the tooling base plate. At this time, the extension shaft can be stably pushed out by rotating the push bolt; at the same time, it avoids the damage of the bearing due to axial load. Description of the Drawings
[0016] Figure 1 It is a schematic structural diagram of a tooling for disassembling a turbine and an extension shaft for an aeroengine.
[0017] Figure 2 It is Figure 1 a cross-sectional view of
[0018] Among them, 1. Tooling base plate, 2. Limiting hole, 3. Connecting column, 4. Tooling top plate, 5. Push bolt, 6. Slot, 7. Baffle, 8. Sleeve, 9. Avoidance hole, 10. Heating hole, 11. Connecting bolt, 12. Internal hexagonal socket head, 13. Turbine, 14. Extension shaft, 15. Bearing. Detailed Embodiments
[0019] The following describes the detailed embodiments of the present utility model to facilitate those skilled in the art of this technology to understand the present utility model. However, it should be clear that the present utility model is not limited to the scope of the detailed embodiments. For those of ordinary skill in the art of this technology, as long as various changes are within the spirit and scope of the present utility model defined and determined by the appended claims, these changes are obvious, and all utility models created using the concept of the present utility model are within the scope of protection.
[0020] As shown in Figure 1 and Figure 2As shown in the figure, the disassembly tooling for the turbine 13 and the extension shaft 14 of an aero-engine in this solution includes a tooling base plate 1. A limiting hole 2 is provided in the middle of the tooling base plate 1 for the extension shaft 14 to pass through. The radial dimension of the limiting hole 2 is matched with the outer diameter of the bearing 15 sleeved on one end of the extension shaft 14 close to the turbine 13, so that when the extension shaft 14 passes through the limiting hole 2, the bearing 15 can be in sliding fit with the limiting hole 2.
[0021] The tooling base plate 1 is detachably connected to the tooling top plate 4 through four connecting columns 3. Specifically, both the tooling base plate 1 and the tooling top plate 4 are in a disc shape. The four connecting columns 3 are evenly distributed in the circumferential direction of the tooling base plate 1. One end of the four connecting columns 3 is welded to the tooling base plate 1, and the other end of the four connecting columns 3 is fixedly connected to the tooling top plate 4 through connecting bolts 11. A threaded hole is provided in the middle of the tooling top plate 4 and a push bolt 5 is fitted thereon. An internal hexagonal screw head 12 is provided at one end of the push bolt 5 away from the tooling base plate 1. The threaded hole and the limiting hole 2 are coaxially arranged, and the radial dimension of the push bolt 5 is smaller than the radial dimension of the part where the extension shaft 14 is sleeved with the turbine 13, and the radial dimension of the limiting hole 2 is smaller than the radial dimension of the turbine 13.
[0022] A heating hole 10 for avoiding a hot air gun is provided on the tooling top plate 4. Slots 6 are opened on both sides of the tooling base plate 1. The inner ends of the slots 6 are communicated with the limiting hole 2. A baffle 7 is movably inserted into the slots 6. A sleeve 8 is provided on the end face of the tooling base plate 1 away from the tooling top plate 4. The port of the sleeve 8 is connected to the end face of the tooling top plate 4. An avoidance hole 9 for the extension shaft 14 to pass through is provided at the bottom of the sleeve 8.
[0023] When implementing this solution, first pass one end of the extension shaft 14 away from the turbine 13 through the limiting hole 2 and the avoidance hole 9 in sequence. Fix the tooling top plate 4 on the four connecting columns 3 through the connecting bolts 11. The bearing 15 sleeved on one end of the extension shaft 14 close to the turbine 13 can be supported by the baffles 7 located on both sides of the limiting hole 2, so that the turbine 13 and the tooling base plate 1 do not contact each other. Thus, by rotating the extension shaft 14, the turbine 13 can be rotated, so that the hot air gun can uniformly heat the rotating turbine 13 through the heating hole 10. At the same time, cold substances such as dry ice can be added into the sleeve 8 to cool the extension shaft 14. Thus, using the principle of thermal expansion and contraction, it is easier to separate the turbine 13 and the extension shaft 14 subsequently. Then, pull out the baffle 7 so that the bearing 15 is no longer supported. The turbine 13 and the extension shaft 14 fall, and the turbine 13 abuts against the tooling base plate 1. At this time, by rotating the push bolt 5, the stable ejection of the extension shaft 14 can be realized. At the same time, the bearing 15 is prevented from being damaged due to axial load.
[0024] In summary, in this solution, the extension shaft 14 can be ejected by the rotating force of the push bolt 5. The operation is convenient, time-saving and labor-saving, and the stability and reliability are strong. At the same time, the deformation and even damage of the extension shaft 14 caused by knocking are avoided.
Claims
1. A disassembly tooling for a turbine and an extension shaft of an aeroengine, characterized in that It includes a tooling base plate, on which a limiting hole is provided for the extension shaft to pass through. The tooling base plate is detachably connected to a tooling top plate through a number of connecting columns. A threaded hole is provided on the tooling top plate and a push bolt is fitted thereon. The threaded hole and the limiting hole are coaxially arranged.
2. The disassembling tooling for the turbine and extension shaft of an aeroengine according to claim 1, wherein, Slots are formed on both sides of the tooling base plate. The inner end of the slot communicates with the limiting hole, and a baffle is movably inserted into the slot.
3. The disassembly tooling for the turbine and extension shaft of an aero-engine according to claim 1, characterized in that A sleeve is provided on the end face of the tooling base plate away from the tooling top plate. The port of the sleeve is connected to the end face of the tooling top plate, and an avoidance hole for the extension shaft to pass through is provided at the bottom of the sleeve.
4. The disassembly tooling for the turbine and extension shaft of an aero-engine according to claim 1, characterized in that, A heating hole for avoiding a hot air gun is provided on the tooling top plate.
5. The disassembly tooling for the turbine and extension shaft of an aeroengine according to claim 1, characterized in that, The number of the connecting columns are evenly distributed in the circumferential direction of the tooling base plate, and the tooling top plate and the connecting columns are fastened by connecting bolts.
6. The disassembly tooling for the turbine and extension shaft of an aero-engine according to claim 1, characterized in that, The radial dimension of the limiting hole is adapted to the outer diameter of the bearing sleeved on the extension shaft near the turbine end.
7. The disassembly tooling for the turbine and extension shaft of an aero-engine according to claim 1, characterized in that The radial dimension of the push bolt is smaller than the radial dimension of the part where the extension shaft is sleeved with the turbine, and the radial dimension of the limiting hole is smaller than the radial dimension of the turbine.
8. The disassembly tooling for the turbine and extension shaft of an aero-engine according to claim 1, wherein, An inner hexagonal screw head is provided at one end of the push bolt away from the tooling base plate.