CN113969931A - Nut component convenient to rotor dynamic balance - Google Patents
Nut component convenient to rotor dynamic balance Download PDFInfo
- Publication number
- CN113969931A CN113969931A CN202111198243.7A CN202111198243A CN113969931A CN 113969931 A CN113969931 A CN 113969931A CN 202111198243 A CN202111198243 A CN 202111198243A CN 113969931 A CN113969931 A CN 113969931A
- Authority
- CN
- China
- Prior art keywords
- screw
- balance
- rotor
- nut
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/10—Anti- vibration means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/32—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels
- F16F15/322—Correcting- or balancing-weights or equivalent means for balancing rotating bodies, e.g. vehicle wheels the rotating body being a shaft
Abstract
The utility model relates to an aeroengine field, for a nut subassembly convenient to rotor dynamic balance, set up a plurality of screw holes through even interval on gland nut's outer peripheral face, and the setting can with screw hole screw-thread fit's check screw and balance screw, check screw can cooperate with the locking plate groove and lock gland nut, balance screw adjusts the unbalance amount of rotor through coordinating with the screw hole, according to the difference of unbalance amount size and position, the increase or reduce balance screw in the position of difference and can stabilize the efficient regulation to the unbalance amount of rotor. Compare and subtract the mode of material and carry out dynamic balance among the prior art, this application adopts the mode that increases the material to carry out dynamic balance, can not change carrying out the structure of dynamic balance's in-process main shaft and gland nut itself, can not cause the damage, and the intensity of main shaft or gland nut self also can not receive the influence.
Description
Technical Field
The application belongs to the field of aircraft engines, and particularly relates to a nut assembly facilitating dynamic balance of a rotor.
Background
The rotor on an aircraft engine and a tester generally comprises a main shaft and a plurality of parts assembled on the main shaft, such as blades, gears, bearings, distance sleeves and compression nuts, wherein the compression nuts are used for compressing all the parts on the main shaft in the axial direction and then stopping the parts with the main shaft in the circumferential direction through locking plates, so that the rotor is prevented from loosening due to vibration when rotating at a high speed. The locking plate is a disposable consumption part, and needs to be replaced when the rotor is assembled next time, so that resource waste is caused.
In addition, the mass center of the main shaft and the part is often deviated from the rotating axis due to processing and manufacturing reasons, and a large unbalanced force is formed under high-speed rotation, so that the rotor is vibrated greatly, and further the damage of an engine or a tester is caused. In order to reduce the influence caused by the unbalance amount of the rotor, the dynamic balancing machine needs to perform dynamic balancing after the rotor is assembled, so that the unbalance amount of the rotor meets the design requirement. After the rotor finds the unbalance amount on the dynamic balancing machine, the unbalance amount is generally removed by removing materials on a main shaft or a part, the dynamic balancing machine is again balanced by moving after the materials are removed, the residual unbalance amount is found, the materials are removed again, and the processes are repeated until the requirements are met. The above process is repeated for the next rotor assembly, but there is a situation where the material to be removed has already been removed at the last dynamic balance, and if the material is removed again at this location, the strength of the spindle or component will be too low and even the spindle or component will be damaged directly.
Therefore, how to more effectively realize the dynamic balance of the rotor is a problem to be solved.
Disclosure of Invention
The utility model provides a nut component convenient to rotor dynamic balance to carry out rotor dynamic balance through the mode of getting rid of the material among the solution prior art and cause main shaft or part intensity to hang down the problem of damaging even.
The technical scheme of the application is as follows: the utility model provides a nut component convenient to rotor dynamic balance, includes gland nut, still includes stop screw and balance screw, set up a plurality of screw holes that even interval set up on gland nut's the outer peripheral face, stop screw is total a set of, balance screw has the multiunit, stop screw and balance screw homoenergetic can with screw hole screw-thread fit, stop screw corresponds the setting with epaxial locking plate groove when the installation and stop screw can insert to the locking plate inslot.
Preferably, the screw hole is big-end-up's shoulder hole and screw hole and gland nut's inside intercommunication in interior little, stop screw includes fixed part and locking portion, fixed part and screw hole screw-thread fit, locking portion can pass the screw hole and push up tightly to locking plate tank bottom.
Preferably, the section with the larger diameter of the threaded hole is provided with threads, and the section with the smaller diameter is not provided with threads.
Preferably, at least two groups of the balance screws in the plurality of groups have the same diameter material and different lengths.
Preferably, the balance screw and the anti-loose screw are both countersunk head screws.
Preferably, the aircraft engine rotor assembly comprises a main shaft, a gear, a distance sleeve, a bearing and a compression nut; the compression nut adopts the nut component.
The utility model provides a nut assembly convenient to rotor dynamic balance, a plurality of screw holes are seted up through even interval on gland nut's outer peripheral face, and set up can with screw hole screw-thread fit's check screw and balance screw, check screw can cooperate with the locking plate groove and lock gland nut, balance screw adjusts the unbalance amount of rotor through cooperating with the screw hole, according to the difference of unbalance amount size and position, increase or reduce balance screw in the position of difference and can stabilize the efficient regulation to the unbalance amount of rotor. Compare and subtract the mode of material and carry out dynamic balance among the prior art, this application adopts the mode that increases the material to carry out dynamic balance, can not change carrying out the structure of dynamic balance's in-process main shaft and gland nut itself, can not cause the damage, and the intensity of main shaft or gland nut self also can not receive the influence.
Preferably, set up the screw hole into the shoulder hole and guarantee that stop screw can not influence the normal installation of balance screw when arbitrary screw hole position and locking plate groove are stable to be cooperated.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
FIG. 1 is a schematic front view of the overall structure of the present application;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic side view of the overall structure of the present application;
FIG. 4 is a schematic view of a balance screw according to the present application;
FIG. 5 is a schematic structural view of a locking screw of the present application;
fig. 6 is a schematic view of a rotor assembly according to the present application.
1. A main shaft; 2. a gear; 3. a distance sleeve; 4. a bearing; 5. a compression nut; 6. a threaded hole; 7. a lock screw; 8. a balance screw; 9. a fixed part; 10. a locking portion.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
A nut component convenient for dynamic balance of a rotor is arranged on a main shaft 1 and comprises a compression nut 5, a plurality of threaded holes 6 and a balance screw 8, wherein the threaded holes 6 are uniformly arranged on the outer peripheral surface of the compression nut 5 at intervals, the number of the threaded holes is preferably 16, the locking screw 7 and the balance screw 8 are made of the existing materials, the locking screw 7 is a group, the balance screw 8 has a plurality of groups, the locking screw 7 and the balance screw 8 can be in threaded fit with the threaded holes 6, the locking screw 7 is arranged corresponding to an axial locking plate groove when being installed, the locking screw 7 can be inserted into the locking plate groove, circumferential stopping of the compression nut 5 is achieved, and the balance screw 8 is used for achieving dynamic balance adjustment of the rotor after being in threaded fit with the threaded holes 6.
When gland nut 5 compresses tightly axial part and screws up, with arbitrary screw hole 6 alignment epaxial lock piece groove on gland nut 5, with lockscrew 7 precession this screw hole 6 until lockscrew 7 head top epaxial lock piece groove bottom, realize circumference locking, replaced the cooperation of lock piece and lock piece groove in the current design, optimized the structure.
After the rotor assembly is assembled, the balance is carried out on the balancing machine, the size and the position of the unbalance amount are found, then the close mass balance screw 8 is added in the threaded hole 6 close to the reverse position of the unbalance amount and is screwed into the threaded hole 6, the unbalance amount on the opposite side is reduced, and the dynamic balance is carried out again until the unbalance amount of the rotor assembly meets the requirement.
Compare and carry out dynamic balance in the mode of getting rid of the material among the prior art, this application adopts the mode that increases the material to carry out dynamic balance, the structure of carrying out dynamic balance in-process main shaft 1 and gland nut 5 itself can not change, can not cause the damage, the intensity of main shaft 1 or gland nut 5 self also can not receive the influence, also need not cause direct damage because part intensity crosses lowly, and only need increase or reduce balance screw 8 because the unbalance amount of adjusting the rotor, adjust convenient and stable, the manpower and materials of a large amount of processing locking plate consumptions have been saved. And through the cooperation of screw hole 6 with jam screw 7, can prevent effectively that gland nut 5 self is not hard up.
Preferably, screw hole 6 is the shoulder hole of interior little big outward and screw hole 6 communicates with gland nut 5's inside, and the great section of screw hole 6 diameter cooperatees with balance screw 8, and stop screw 7 includes fixed part 9 and locking portion 10, and fixed part 9 is cylindrical structure with locking portion 10, and fixed part 9 diameter is the same with balance screw 8 and with screw hole 6 screw-thread fit, and locking portion 10 diameter is less than fixed part 9 and can pass screw hole 6 with top tight to locking plate tank bottom. When guaranteeing that lockscrew 7 can cooperate with the locking plate groove to carry out circumference locking through designing screw hole 6 as the shoulder hole, the installation of balance screw 8 self is fixed can not receive the influence, also is when lockscrew 7 matches through another screw hole 6 and locking plate groove, and the screw hole 6 of its original position still can stably cooperate with balance screw 8 to guarantee the stability of installation.
Preferably, the larger diameter section of the threaded hole 6 is threaded and the smaller diameter section is unthreaded, and since the smaller diameter section of the threaded hole 6 is only fitted with the locking portion 10, the smaller diameter section is unthreaded and can facilitate the insertion of the locking portion 10 more.
Preferably, in order to ensure the precision of the rotary dynamic balance adjustment, the balance screws 8 have multiple groups of same diameter materials and different lengths. Since the materials used for the balance screws 8 of different lengths are the same, the balance screws 8 of different lengths have different weights, and when the unbalance amount is measured to be large, the balance screws 8 with large weights are used near the unbalanced reverse position; when a small unbalance is measured, a balance screw 8 of a small weight is used in the vicinity of the position of the unbalance reversal. Therefore, the balance of the dynamic balance amount of the rotor can be more effectively performed by providing the balance screws 8 of different weights according to the magnitude of the unbalance amount.
Preferably, the balance screw 8 and the anti-loose thread are both countersunk screws, and by adopting the countersunk screws, adjacent screws cannot be influenced mutually, and the difficulty in adjusting the unbalance amount cannot be increased.
As a specific embodiment, the aero-engine rotor assembly is further provided, as shown in fig. 6, the aero-engine rotor assembly comprises a main shaft 1, a gear 2, a distance sleeve 3, a bearing 4 and a compression nut 5, wherein the gear 2, the distance sleeve 3 and the bearing 4 are all coaxially arranged with and connected to the main shaft 1, the distance sleeve 3 is used for limiting the distance between the bearing 4 and the gear 2, and the compression nut 5 is used for compressing the gear 2, the distance sleeve 3 and the bearing 4, and the structures are the same as those of the existing structures, except that the compression nut 5 adopts the nut assembly, and by adopting the compression assembly, while stable support is guaranteed for the gear 2, the distance sleeve 3 and the bearing 4, effective adjustment of dynamic balance of the main shaft 1 can be carried out without removing materials of the main shaft 1 and parts, and the self strength of the main shaft 1 and the parts can not be affected.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (6)
1. A nut component for facilitating dynamic balancing of a rotor, comprising a compression nut (5), characterized in that: still include locking screw (7) and balance screw (8), set up a plurality of screw holes (6) that even interval set up on the outer peripheral face of gland nut (5), locking screw (7) are total a set of, balance screw (8) have the multiunit, locking screw (7) and balance screw (8) all can with screw hole (6) screw-thread fit, locking screw (7) correspond the setting with epaxial locking plate groove when the installation and locking screw (7) can insert to the locking plate inslot.
2. The nut assembly for facilitating dynamic balancing of a rotor of claim 1 wherein: screw hole (6) are interior big shoulder hole and screw hole (6) and the inside intercommunication of gland nut (5) outside the little, locking screw (7) include fixed part (9) and locking portion (10), fixed part (9) and screw hole (6) screw-thread fit, locking portion (10) can pass screw hole (6) and push up tightly to locking plate tank bottom.
3. The nut assembly for facilitating dynamic balancing of a rotor of claim 2 wherein: the section with the larger diameter of the threaded hole (6) is provided with threads, and the section with the smaller diameter is not provided with threads.
4. The nut assembly for facilitating dynamic balancing of a rotor of claim 1 wherein: at least two groups of balance screws (8) in the plurality of groups of balance screws (8) have the same diameter material and different lengths.
5. The nut assembly for facilitating dynamic balancing of a rotor of claim 1 wherein: the balance screw (8) and the anti-loose screw (7) are both countersunk head screws.
6. An aircraft engine rotor assembly comprises a main shaft (1), a gear (2), a distance sleeve (3), a bearing (4) and a compression nut (5); the compression nut (5) adopts a nut component as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198243.7A CN113969931A (en) | 2021-10-14 | 2021-10-14 | Nut component convenient to rotor dynamic balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198243.7A CN113969931A (en) | 2021-10-14 | 2021-10-14 | Nut component convenient to rotor dynamic balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113969931A true CN113969931A (en) | 2022-01-25 |
Family
ID=79587460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111198243.7A Pending CN113969931A (en) | 2021-10-14 | 2021-10-14 | Nut component convenient to rotor dynamic balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113969931A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115795716A (en) * | 2022-11-15 | 2023-03-14 | 中国航发沈阳发动机研究所 | Method for determining requirement of unbalance amount of rotor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6185501A (en) * | 1984-10-03 | 1986-05-01 | Ngk Insulators Ltd | Balance adjusting method of ceramics rotor and adjusting jig available thereof |
| CN201982607U (en) * | 2011-02-21 | 2011-09-21 | 无锡威孚中意齿轮有限责任公司 | Gear capable of regulating dynamic balance |
| CN102606600A (en) * | 2011-01-19 | 2012-07-25 | 盈锡精密工业股份有限公司 | Balance structure and balance method for precision locknut |
| CN104564990A (en) * | 2013-10-18 | 2015-04-29 | Ntn株式会社 | Locknut |
| KR20170002398U (en) * | 2015-12-24 | 2017-07-04 | 주식회사 한국가스기술공사 | Balancing shaft structure |
| CN111555539A (en) * | 2020-05-22 | 2020-08-18 | 深圳市速锋科技股份有限公司 | Dynamic balance rotor structure |
-
2021
- 2021-10-14 CN CN202111198243.7A patent/CN113969931A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6185501A (en) * | 1984-10-03 | 1986-05-01 | Ngk Insulators Ltd | Balance adjusting method of ceramics rotor and adjusting jig available thereof |
| CN102606600A (en) * | 2011-01-19 | 2012-07-25 | 盈锡精密工业股份有限公司 | Balance structure and balance method for precision locknut |
| CN201982607U (en) * | 2011-02-21 | 2011-09-21 | 无锡威孚中意齿轮有限责任公司 | Gear capable of regulating dynamic balance |
| CN104564990A (en) * | 2013-10-18 | 2015-04-29 | Ntn株式会社 | Locknut |
| KR20170002398U (en) * | 2015-12-24 | 2017-07-04 | 주식회사 한국가스기술공사 | Balancing shaft structure |
| CN111555539A (en) * | 2020-05-22 | 2020-08-18 | 深圳市速锋科技股份有限公司 | Dynamic balance rotor structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115795716A (en) * | 2022-11-15 | 2023-03-14 | 中国航发沈阳发动机研究所 | Method for determining requirement of unbalance amount of rotor |
| CN115795716B (en) * | 2022-11-15 | 2024-03-19 | 中国航发沈阳发动机研究所 | Method for determining rotor unbalance amount requirement |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220125 |
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| RJ01 | Rejection of invention patent application after publication |