CN113153921A - Novel torque transmission connecting structure - Google Patents
Novel torque transmission connecting structure Download PDFInfo
- Publication number
- CN113153921A CN113153921A CN202110467932.7A CN202110467932A CN113153921A CN 113153921 A CN113153921 A CN 113153921A CN 202110467932 A CN202110467932 A CN 202110467932A CN 113153921 A CN113153921 A CN 113153921A
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- Prior art keywords
- driven shaft
- driving shaft
- shaft
- torque transmission
- spherical
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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
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
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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
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/08—Adaptations for driving, or combinations with, pumps
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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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a novel torque transmission connecting structure which comprises a driving shaft connected with a turbine engine and a driven shaft connected with a gas compressor, wherein the driving shaft is sleeved in the driven shaft; the outer surface of the driving shaft is provided with a plurality of spherical teeth which protrude outwards and are hemispherical, and the spherical teeth are distributed in a plurality of spiral lines along the axial direction of the driving shaft; one end of the driven shaft along the axial direction gradually shrinks to form a shrinking end, and the other end along the axial direction gradually enlarges to form an opening end; the contraction end of the driven shaft is provided with an assembling hole used for being installed in the driving shaft, and the opening end of the driven shaft is provided with a step hole used for being connected with the gas compressor. According to the invention, by arranging the spherical teeth and the spiral grooves, the power of the turbine engine is transmitted to the driven shaft through the driving shaft, and the driven shaft is connected with the compressor rotor, so that the compressor is driven to rotate together to realize torque transmission, opposite tensioning axial force is generated, the transmission efficiency is high, and the transmission stability is high.
Description
Technical Field
The invention relates to the technical field of shaft couplings, in particular to a novel torque transmission connecting structure.
Background
Microturbine engines are an emerging field of research based on modern advanced machining technology. The engine is a special aircraft engine, has the characteristics of small volume, light weight and large thrust-weight ratio, and has wide application prospect in the military and civil fields.
The existing coupling has the defects that the vibration is uncontrollable when the coupling is contacted with an engine rotor due to uneven stress of contact points, and the transmission efficiency and the transmission stability are influenced by the fact that unnecessary loads such as vibration, bending moment and the like can be transmitted simultaneously when torque is transmitted along with the increase of abrasion; and the existing coupler has very high requirements on processing precision and mounting precision, and is not beneficial to manufacturing production.
Based on the above situation, the invention provides a novel torque transmission connection structure, which can effectively solve the above problems.
Disclosure of Invention
The invention aims to provide a novel torque transmission connecting structure. The novel torque transmission connecting structure provided by the invention has the advantages that the structure is simple, the design is reasonable, the power of a turbine engine is transmitted to the driven shaft through the driving shaft, and the driven shaft is connected with the rotor of the gas compressor, so that the gas compressor is driven to rotate together to realize the transmission of torque, opposite tensioning axial force is generated, the transmission efficiency is high, and the transmission stability is high; the driving shaft and the driven shaft are integrally formed through a 3D printing technology, complex functional structures such as spherical teeth and spiral grooves can be printed without adding a supporting structure, and the manufacturing difficulty is reduced; and the required spherical quantity and axial force can be automatically matched and calculated according to parameters such as different materials, helical angles and the like.
The invention is realized by the following technical scheme:
a novel torque transmission connecting structure comprises a driving shaft connected with a turbine engine and a driven shaft connected with a gas compressor, wherein the driving shaft and the driven shaft are both in hollow tubular structures, and the driving shaft is sleeved in the driven shaft; the outer surface of the driving shaft is provided with a plurality of spherical teeth which protrude outwards and are hemispherical, and the spherical teeth are distributed in a plurality of spiral lines along the axial direction of the driving shaft; one end of the driven shaft along the axial direction gradually shrinks to form a shrinking end, and the other end along the axial direction gradually enlarges to form an opening end; the contraction end of the driven shaft is provided with an assembling hole for being installed in the driving shaft, and the open end of the driven shaft is provided with a step hole for being connected with a gas compressor; the inner surface of the driven shaft is provided with a plurality of spiral grooves, and the spherical teeth are screwed into the spiral grooves.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the slot inlet hole of the spiral groove is provided at the contraction end of the driven shaft, and one end of the spiral groove, which is far away from the slot inlet hole, is provided with a spherical tooth limiting surface, and a distance exists between the spherical tooth limiting surface and the stepped surface of the stepped hole.
According to the above aspect, as a more preferable aspect of the above aspect, the plurality of spiral grooves are distributed at equal angles along the inner surface of the driven shaft with the center line of the driven shaft as an axis.
According to the above-described aspect, as a more preferable aspect of the above-described aspect, the number of the spiral grooves is 8.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the spherical teeth are spirally distributed on the outer surface of the driving shaft in an octant manner.
According to the above technical solution, as a further preferable technical solution of the above technical solution, IN718 is adopted as a material of both the driving shaft and the driven shaft.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the driving shaft and the driven shaft are integrally formed by using a 3D printing technology.
According to the above technical solution, as a further preferable technical solution of the above technical solution, the number of spherical teeth is determined by the following formula:
n≈1.5T/(σp*π*r2*R*μ)
wherein: n is the number of spherical teeth, T is the transmission rated torque, sigma p material allowable extrusion stress, R is the radius of the spherical teeth, R is the distance from the center of the rotating torsion shaft to the center of the spherical teeth, and mu is the load uneven coefficient.
According to the above aspect, as a further preferable aspect of the above aspect, the axial force is determined by the following equation in a state where the driving shaft and the driven shaft are fastened together:
Fz＝T*μ/(tanβ*R)
wherein: beta is the helix angle.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the novel torque transmission connecting structure provided by the invention has the advantages that the structure is simple, the design is reasonable, the power of a turbine engine is transmitted to the driven shaft through the driving shaft by arranging the spherical teeth and the spiral grooves, the driven shaft is connected with the rotor of the gas compressor, so that the gas compressor is driven to rotate together to realize the transmission of torque, opposite tensioning axial force is generated, the transmission efficiency is high, and the transmission stability is high; the driving shaft and the driven shaft are integrally formed through a 3D printing technology, complex functional structures such as spherical teeth and spiral grooves can be printed without adding a supporting structure, and the manufacturing difficulty is reduced; and the required spherical quantity and axial force can be automatically matched and calculated according to parameters such as different materials, helical angles and the like.
Drawings
FIG. 1 is an exploded schematic view of the present invention;
fig. 2 is a schematic structural view of a driven shaft of the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The technical features of the present patent application, which relate to specific structures of turbine engines and compressors, should be regarded as the prior art, and if not specifically stated, they are obtained from conventional commercial sources or manufactured by conventional methods, and the specific structures, operation principles, control modes and spatial arrangement modes which may be involved are all conventional choices in the field, and should not be regarded as the innovative points of the present invention, and it is understood by those skilled in the art that the present patent application is not further specifically described in detail.
Example 1:
a novel torque transmission connecting structure comprises a driving shaft 1 connected with a turbine engine and a driven shaft 2 connected with a gas compressor, wherein the driving shaft 1 and the driven shaft 2 are both in hollow tubular structures, and the driving shaft 1 is sleeved in the driven shaft 2; the outer surface of the driving shaft 1 is provided with a plurality of spherical teeth 3 which protrude outwards and are hemispherical, and the spherical teeth 3 are distributed in a plurality of spiral lines along the axial direction of the driving shaft 1; one end of the driven shaft 2 along the axial direction gradually shrinks to form a shrinking end 21, and the other end along the axial direction gradually enlarges to form an opening end 22; a contraction end 21 of the driven shaft 2 is provided with an assembling hole 4 used for being installed in the driving shaft 1, and an opening end 22 of the driven shaft 2 is provided with a step hole 5 used for being connected with a gas compressor; the inner surface of the driven shaft 2 is provided with a plurality of spiral grooves 6, and the spherical teeth 3 are screwed into the spiral grooves 6.
Example 2:
a novel torque transmission connecting structure comprises a driving shaft 1 connected with a turbine engine and a driven shaft 2 connected with a gas compressor, wherein the driving shaft 1 and the driven shaft 2 are both in hollow tubular structures, and the driving shaft 1 is sleeved in the driven shaft 2; the outer surface of the driving shaft 1 is provided with a plurality of spherical teeth 3 which protrude outwards and are hemispherical, and the spherical teeth 3 are distributed in a plurality of spiral lines along the axial direction of the driving shaft 1; one end of the driven shaft 2 along the axial direction gradually shrinks to form a shrinking end 21, and the other end along the axial direction gradually enlarges to form an opening end 22; a contraction end 21 of the driven shaft 2 is provided with an assembling hole 4 used for being installed in the driving shaft 1, and an opening end 22 of the driven shaft 2 is provided with a step hole 5 used for being connected with a gas compressor; the inner surface of the driven shaft 2 is provided with a plurality of spiral grooves 6, and the spherical teeth 3 are screwed into the spiral grooves 6.
According to the invention, by arranging the spherical teeth 3 and the spiral grooves 6, the power of the turbine engine is transmitted to the driven shaft 2 through the driving shaft 1, and the driven shaft 2 is connected with the compressor rotor, so that the compressor is driven to rotate together to realize the transmission of torque, and opposite tensioning axial forces are generated, the transmission efficiency is high, and the transmission stability is high.
Further, in another embodiment, the slot entrance hole 61 of the spiral groove 6 is disposed at the contraction end 21 of the driven shaft 2, and one end of the spiral groove 6 away from the slot entrance hole 61 is provided with a spherical tooth limiting surface 62, and a distance exists between the spherical tooth limiting surface 62 and the step surface 51 of the step hole 5.
Through adopting above-mentioned technical scheme, the setting of the spacing face 62 of spherical tooth has increased that the helicla flute 6 is spacing to the position of spherical tooth 3, has compensated the relative displacement between driving shaft 1 and the driven shaft 2 cooperation rotation to play buffering and cushioning effect.
Further, in another embodiment, the plurality of spiral grooves 6 are distributed at equal angles along the inner surface of the driven shaft 2 with the center line of the driven shaft 2 as an axis.
Further, in another embodiment, the number of the spiral grooves 6 is 8.
Further, in another embodiment, the spherical teeth 3 are spirally distributed on the outer surface of the driving shaft 1 in an octant manner.
Through adopting above-mentioned technical scheme, the quantity of helicla flute 6 is eight and be the angular distribution such as, and spherical tooth 3 is the spiral distribution of eighty percent branch simultaneously, can effectively prevent transmission vibrations when driving shaft 1 and driven shaft 2 transmission moment of torsion like this to stability when having increased the transmission moment of torsion.
Further, IN another embodiment, the material of the driving shaft 1 and the driven shaft 2 is IN 718.
By adopting the technical scheme, the IN718 has good fatigue resistance, radiation resistance, oxidation resistance and corrosion resistance, and good processability, weldability and long-term structure stability.
Further, in another embodiment, the driving shaft 1 and the driven shaft 2 are integrally formed by using a 3D printing technology.
Through adopting above-mentioned technical scheme, driving shaft 1 and driven shaft 2 pass through 3D printing technique integrated into one piece to need not to increase bearing structure, just printable out spherical tooth 3 and helicla flute 6 etc. complicated functional structure, reduced the degree of difficulty of making.
Further, in another embodiment, the number of spherical teeth 3 is determined by the following formula:
N＝1.5T/(σp*π*r2*R*μ)
wherein: n is the number of the spherical teeth 3, T is the transmission rated torque, sigma p material allowable extrusion stress, R is the radius of the spherical teeth, R is the distance from the center of the rotating torsion shaft to the center of the spherical teeth, and mu is the load uneven coefficient.
By adopting the technical scheme, the required number of the spherical surfaces can be automatically matched and calculated according to different materials, torque and other parameters.
The specific parameters of the invention are preferably as follows:
further, in another embodiment, the axial force is determined by the following formula when the driving shaft 1 and the driven shaft 2 are in a screwed state:
Fz＝T*μ/(tanβ*R)
wherein: beta is the helix angle.
By adopting the technical scheme, the axial force can be automatically matched and calculated according to different parameters such as torque, helical angle, turning torsion shaft radius and the like.
It should be noted that: the two formulas are not only suitable for the turbine engine, but also suitable for all rotating motion parts which require damping and only transmit torque, and no specific industry limitation exists. The use requirements can be met only by timely adjusting the parameters according to the actual conditions.
The specific parameters of the invention are as follows:
materials: IN 718;
allowable extrusion stress σ of materialp＝1100MPa；
The transmission torque T is 200 Nm;
spiral groove rotation direction: right-handed (clockwise rotation);
helix angle β is 11 °;
spherical teeth 3 distribution form: the eight parts are distributed on the outer surface of the driving shaft 1;
the radius r of the spherical teeth 3 is 3 mm;
the stress center radius R of the spherical teeth 3 is 16mm (limited by the inner diameter of the main moving shaft);
the load unevenness coefficient μ is 0.018;
according to the parameters, the following parameters can be obtained:
the number n of spherical teeth 3 is 1.5T/(σ)p*π*r2*R*μ)
＝1.5*200/(1100*106*3.14*0.0032*0.016*0.018)
＝33.5
Actual value taking: n is 40. (the actual value is determined by the distribution of the spherical teeth 3)
Axial force Fz ═ T ═ μ/(tan β · R)
＝200*0.018/(tan11°*0.016)
＝1157.5N
According to the description of the invention and the accompanying drawings, a person skilled in the art can easily make or use a novel torque transmission connection structure of the invention and can produce the positive effects described in the invention.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (9)
1. The utility model provides a novel pass and turn round connection structure which characterized in that: the turbine engine comprises a driving shaft (1) connected with a turbine engine and a driven shaft (2) connected with a gas compressor, wherein the driving shaft (1) and the driven shaft (2) are both in hollow tubular structures, and the driving shaft (1) is sleeved in the driven shaft (2); the outer surface of the driving shaft (1) is provided with a plurality of hemispherical spherical teeth (3) which protrude outwards, and the spherical teeth (3) are distributed in a plurality of spiral lines along the axial direction of the driving shaft (1); one end of the driven shaft (2) along the axial direction gradually shrinks to form a shrinking end (21), and the other end along the axial direction gradually enlarges to form an opening end (22); a contraction end (21) of the driven shaft (2) is provided with an assembly hole (4) used for being installed in the driving shaft (1), and an opening end (22) of the driven shaft (2) is provided with a step hole (5) used for being connected with a gas compressor; a plurality of spiral grooves (6) are formed in the inner surface of the driven shaft (2), and the spherical teeth (3) are screwed into the spiral grooves (6).
2. The novel torque transmission connection structure according to claim 1, wherein: the spiral groove is characterized in that a groove inlet hole (61) of the spiral groove (6) is formed in the contraction end (21) of the driven shaft (2), a spherical tooth limiting surface (62) is arranged at one end, far away from the groove inlet hole (61), of the spiral groove (6), and a distance exists between the spherical tooth limiting surface (62) and a step surface (51) of the step hole (5).
3. The novel torque transmission connection structure according to claim 1, wherein: the spiral grooves (6) are distributed along the inner surface of the driven shaft (2) at equal angles by taking the central line of the driven shaft (2) as an axis.
4. The novel torque transmission connection structure according to claim 1, wherein: the number of the spiral grooves (6) is 8.
5. The novel torque transmission connection structure according to claim 1, wherein: the spherical teeth (3) are spirally distributed on the outer surface of the driving shaft (1) in an eight-equal-part manner.
6. The novel torque transmission connection structure according to claim 1, wherein: the driving shaft (1) and the driven shaft (2) are made of IN 718.
7. The novel torque transmission connection structure according to claim 1, wherein: the driving shaft (1) and the driven shaft (2) are integrally formed by adopting a 3D printing technology.
8. The novel torque transmission connection structure according to claim 1, wherein: the number of spherical teeth (3) is determined by the following formula:
n≈1.5T/(σp*π*r2*R*μ)
wherein: n is the number of spherical teeth (3), T is the transmission rated torque, sigmapThe allowable extrusion stress of the material is R, the radius of the spherical teeth, R, the distance from the center of the rotating torsion shaft to the center of the spherical teeth, and mu is the load non-uniformity coefficient.
9. The novel torque transmission connection structure according to claim 1, wherein: the axial force is determined by the following formula when the driving shaft (1) and the driven shaft (2) are in a screwing state:
Fz＝T*μ/(tanβ*R)
wherein: beta is the helix angle.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110467932.7A CN113153921A (en) | 2021-04-28 | 2021-04-28 | Novel torque transmission connecting structure |
| PCT/CN2021/136254 WO2022227584A1 (en) | 2021-04-28 | 2021-12-08 | Novel torque transmission connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110467932.7A CN113153921A (en) | 2021-04-28 | 2021-04-28 | Novel torque transmission connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113153921A true CN113153921A (en) | 2021-07-23 |
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ID=76872013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110467932.7A Pending CN113153921A (en) | 2021-04-28 | 2021-04-28 | Novel torque transmission connecting structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113153921A (en) |
| WO (1) | WO2022227584A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022227584A1 (en) * | 2021-04-28 | 2022-11-03 | 浙江意动科技股份有限公司 | Novel torque transmission connection structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203130837U (en) * | 2013-02-06 | 2013-08-14 | 陕西斯克达环保动力机械有限公司 | Quincunx elastic shaft coupler with inner connection taper sleeve |
| CN105757130B (en) * | 2016-04-19 | 2018-07-17 | 哈尔滨东安发动机（集团）有限公司 | A kind of engine turbine connect torsion transmitter with compressor rotor |
| DE102016122595A1 (en) * | 2016-11-23 | 2018-05-24 | Maschinenfabrik Rieter Ag | Rotor cup and open-end spinning rotor with a rotor cup |
| DE102019002648A1 (en) * | 2019-04-10 | 2020-10-15 | Süddeutsche Gelenkscheibenfabrik GmbH & Co. KG | Device for the vibration decoupling of two shaft sections |
| CN113153921A (en) * | 2021-04-28 | 2021-07-23 | 浙江意动科技股份有限公司 | Novel torque transmission connecting structure |
-
2021
- 2021-04-28 CN CN202110467932.7A patent/CN113153921A/en active Pending
- 2021-12-08 WO PCT/CN2021/136254 patent/WO2022227584A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022227584A1 (en) * | 2021-04-28 | 2022-11-03 | 浙江意动科技股份有限公司 | Novel torque transmission connection structure |
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| Publication number | Publication date |
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| WO2022227584A1 (en) | 2022-11-03 |
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