CN112413105A - Variable cross-section planet pin shaft and planet transmission mechanism - Google Patents
Variable cross-section planet pin shaft and planet transmission mechanism Download PDFInfo
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- CN112413105A CN112413105A CN202011436806.7A CN202011436806A CN112413105A CN 112413105 A CN112413105 A CN 112413105A CN 202011436806 A CN202011436806 A CN 202011436806A CN 112413105 A CN112413105 A CN 112413105A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 title abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
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Abstract
The invention discloses a variable cross-section planetary pin shaft and a planetary transmission mechanism, and belongs to the technical field of mechanical transmission. The variable cross-section planetary pin shaft is connected to the planetary frame through a pin shaft, a bearing is sleeved on the pin shaft, a planetary wheel is sleeved on the bearing, the two ends of the pin shaft are respectively a motor side and a blade side, and a variable cross-section hole is formed in the pin shaft in the axial direction, so that the rigidity of the pin shaft close to the blade side is smaller than that of the pin shaft close to the motor side. The planetary transmission mechanism comprises the variable cross-section planetary pin shaft. According to the variable cross-section planetary pin shaft and the planetary transmission mechanism, the pin shaft close to the blade side is provided with the variable cross-section hole, so that the pin shaft is eliminated from deflection, the problem of uneven distribution of loads along the tooth direction of the planetary wheel caused by inclination of the pin shaft is solved, and the service life of the planetary wheel arranged on the pin shaft is prolonged.
Description
Technical Field
The invention relates to the technical field of mechanical transmission, in particular to a variable cross-section planetary pin shaft and a planetary transmission mechanism.
Background
The planetary transmission mechanism has the advantages of large coaxial output speed ratio, small volume, strong bearing capacity and the like, so that the planetary transmission mechanism is widely applied. The planet carrier is one of main power transmission components of the planetary gear train, and is connected with a planet wheel through a pin shaft and a bearing, as shown in fig. 1, the planetary transmission mechanism comprises a planet carrier 1 'and a pin shaft 5' connected with the planet carrier 1 ', the pin shaft 5' is sleeved with two bearings 2 'and a distance ring 4' arranged between the two bearings 2 ', the bearing 2' is sleeved with a planet wheel 3 ', one end of the pin shaft 5' is provided with a motor, and the other end is provided with a blade. Under the loaded state, the pin 5 ' will deflect normally, resulting in the uneven loading of the planet wheel 3 ' connected with it, and the local loading of the planet wheel 3 ' is too large to generate plastic deformation or gluing and fail.
Disclosure of Invention
The invention aims to provide a variable cross-section planetary pin shaft, which eliminates the deviation of the pin shaft, solves the problem of uneven distribution of loads along the tooth direction of a planetary wheel caused by the inclination of the pin shaft and prolongs the service life of the planetary wheel arranged on the pin shaft.
In order to achieve the purpose, the invention adopts the following technical scheme:
a variable cross-section planetary pin shaft is connected to a planetary carrier through a pin shaft, a bearing is sleeved on the pin shaft, a planetary wheel is sleeved on the bearing, the two ends of the pin shaft are respectively a motor side and a blade side, and a variable cross-section hole is formed in the pin shaft in the axial direction, so that the rigidity of the pin shaft close to the blade side is smaller than that of the pin shaft close to the motor side.
Optionally, the variable cross-section hole is a stepped hole, the stepped hole includes at least a first hole portion and a second hole portion arranged in sequence, the first hole portion is arranged close to the blade side, and the first hole portion has a larger aperture size than the second hole portion.
Optionally, the variable cross-section hole is a tapered hole or a flared hole, and the diameter of the variable cross-section hole close to the blade side is larger than that of the variable cross-section hole close to the motor side.
Optionally, the cross-section of the variable cross-section hole is circular, elliptical, polygonal or irregular.
Optionally, the variable cross-section hole is a through hole or a blind hole.
Optionally, the pin shaft is provided with at least one variable cross-section hole.
Optionally, the planet carrier is provided with a mounting hole, the pin shaft is connected to the mounting hole in an interference manner, the pin shaft is circumferentially provided with an unloading groove, the surface, close to the blade side, of the bearing and the surface, abutted to the planet carrier, of the bearing is an abutting surface, and the notch of the unloading groove is just opposite to the abutting surface.
Optionally, the unloading groove is an annular groove, and the cross section of the annular groove is rectangular, oval, circular or arc-shaped.
Optionally, the distance from the abutting surface to the bottom of the mounting hole is L1, the width of the unloading groove extending into the planet carrier is C1, wherein C1 is less than or equal to L1;
the width of the bearing close to the blade side is L2, the width of the unloading groove penetrating into the bearing close to the blade side is C2, wherein C2 is less than or equal to 0.25L 2. It is another object of the present invention to provide a planetary transmission.
In order to achieve the purpose, the invention adopts the following technical scheme:
a planetary transmission mechanism comprises the variable cross-section planetary pin shaft, and reliability and use convenience are improved.
The invention has the beneficial effects that:
according to the variable cross-section planetary pin shaft provided by the invention, the variable cross-section hole is formed in one side of the pin shaft close to the blade side, so that the rigidity of the pin shaft can be reduced, even if the flexibility of the pin shaft close to the blade side is larger than that of the pin shaft close to the motor side, when the pin shaft is subjected to load, the deformation of the pin shaft is increased due to the reduction of the rigidity, the deviation of the pin shaft is eliminated, the problem of uneven distribution of loads along the tooth direction of a planetary wheel caused by the inclination of the pin shaft is solved, the plastic deformation of the planetary wheel is further reduced, and the. In addition, the variable cross-section holes do not influence the structure of the periphery of the pin shaft, so that the pin shaft and the parts matched with the pin shaft can be conveniently assembled, the applicability of the pin shaft is improved, and the pin shaft is convenient to use without adapting to the size modification of other parts when the flexibility of the pin shaft is changed.
According to the planetary transmission mechanism, the rigidity of the pin shaft close to the blade side is reduced by adopting the variable cross-section planetary pin shaft, and when the pin shaft is subjected to load, the pin shaft is deformed in an increased mode, so that the plastic deformation of the planetary wheel is reduced, the service life of the planetary wheel is prolonged, and the reliability of the planetary transmission mechanism is improved; the sizes of other parts matched with the pin shaft do not need to be adapted and modified, the applicability of the pin shaft is good, and the use is convenient.
Drawings
FIG. 1 is a schematic structural view of a planetary transmission provided in the prior art;
FIG. 2 is a schematic structural diagram of a planetary transmission mechanism provided in accordance with an embodiment of the present invention;
FIG. 3 is a dimensional view of the structure of FIG. 2;
fig. 4 is an enlarged view of fig. 3 at a.
Fig. 5 is a schematic structural diagram of a planetary transmission mechanism according to a second embodiment of the present invention.
In the figure:
1' -a planet carrier; 2' -a bearing; 3' -a planet wheel; 4' -spacer rings; 5' -a pin shaft;
1-a planet carrier; 2-a bearing; 3-a planet wheel; 4-distance ring;
5-a pin shaft; 51-a variable cross-section hole; 511-a first hole portion; 512-a second aperture portion; 513 — a third hole portion; 514-a fourth aperture portion; 52-unloading the trough.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example one
The embodiment provides a planetary transmission mechanism, as shown in fig. 2, which includes a planet carrier 1 and a pin 5 connected to the planet carrier 1, wherein a bearing 2 is sleeved on the pin 5, and a planet wheel 3 is sleeved on the bearing 2; specifically, the pin 5 is relatively provided with two bearings 2, and a distance ring 4 is arranged between the two bearings 2 to ensure that the two bearings 2 are respectively abutted against two end surfaces of the planet carrier 1, and the distance ring 4 can be arranged according to the installation distance of the planet carrier 1 and the width of the bearings 2; the both ends of round pin axle 5 are motor side and blade side respectively, and specifically, the one end of round pin axle 5 is provided with the motor, and the other end is provided with the blade, and the concrete connected mode of round pin axle 5 and motor side and the connected mode of round pin axle 5 and blade can refer to prior art, no longer give unnecessary details. Under a loaded state, one side of the pin shaft 5 close to the blade side can deflect normally, so that the planet wheels 3 connected with the pin shaft are unevenly loaded to generate unbalance loading, and the local load of the planet wheels 3 is overlarge to generate plastic deformation or gluing to fail, thereby influencing the use of the planet wheels 3.
In order to solve the above problem, this embodiment further provides a variable cross-section planetary pin, where the pin 5 is axially provided with a variable cross-section hole 51, so that the rigidity of the pin 5 near the blade side is smaller than the rigidity of the pin 5 near the motor side. Because the side provided with the blade side is relatively heavy under load, the side of the pin shaft 5 close to the blade side is easy to deflect, the variable cross-section hole 51 is formed in the side of the pin shaft 5 close to the blade side to reduce the rigidity of the pin shaft, even if the flexibility of the pin shaft 5 close to the blade side is larger than that of the pin shaft close to the motor side, when the pin shaft 5 is under the action of load, the deformation of the pin shaft 5 is increased due to the reduction of the rigidity, the deflection of the pin shaft 5 is eliminated, the problem that the distribution of the planet wheels 3 along the tooth direction load is uneven due to the inclination of the pin shaft 5 is solved, the plastic deformation of the planet wheels 3 is further reduced, and. In addition, the variable cross-section hole 51 does not influence the structure of the periphery of the pin shaft 5, so that the pin shaft 5 and the parts matched with the pin shaft 5 can be conveniently assembled, the applicability of the pin shaft 5 is improved, and when the flexibility of the pin shaft 5 is changed, the size of other parts does not need to be adapted and modified, and the use is convenient.
Alternatively, the variable cross-section holes 51 are through holes, and the diameter of the variable cross-section hole 51 near the blade side is larger than that of the variable cross-section hole 51 near the motor side; optionally, the variable cross-section hole 51 of the pin 5 near the blade side is a stepped hole, the aperture of the variable cross-section hole 51 near the blade side is larger than the aperture of the variable cross-section hole 51 near the motor side, the stepped hole specifically includes several steps of stepped holes without limitation, as long as it is ensured that the aperture size of the variable cross-section hole 51 near the blade side is larger than the aperture size near the motor side, that is, the apertures of the holes of the stepped hole near the blade side on the pin 5 are sequentially reduced along the axial direction of the pin 5, so that the rigidity of the pin 5 near the blade side is smaller than the rigidity of the pin near the motor side, and the flexibility of the pin 5 can be sequentially reduced.
Specifically, when the variable cross-section hole 51 is a stepped hole, the stepped hole at least includes a first hole portion 511 and a second hole portion 512 which are sequentially arranged, the first hole portion 511 is arranged close to the blade side, and the aperture size of the first hole portion 511 is larger than that of the second hole portion 512, and by increasing the aperture size of the first hole portion 511, the physical size of the pin 5 close to the blade side is reduced, and further, the rigidity of the pin 5 is reduced.
In the present embodiment, as shown in fig. 2 and 3, the variable cross-section hole 51 is a through hole, and the variable cross-section hole 51 is a stepped hole. Specifically, the stepped hole includes a first hole portion 511, a second hole portion 512, a third hole portion 513, and a fourth hole portion 514, which are opened in this order; specifically, the first, second, third and fourth hole parts 511, 512, 513 and 514 have inner diameters of D1, D2, D3 and D4, respectively, wherein D1 > D2 > D3 > D4; specifically, the diameter of the pin 5 is D, D is more than D1 and is not less than D2 and is not less than 0.5D, and D3 is not more than 0.5D, so that the pin 5 is guaranteed to have the maximum flexibility on the basis of meeting the rigidity requirement, and the pin 5 can meet the rigidity requirement and generate the maximum deformation under the loaded state so as to reduce the deformation of the planet wheel 3.
Optionally, the cross section of the variable cross-section hole 51 is circular, elliptical, polygonal or irregular, and specifically, may be determined by factors such as comprehensive use requirements, structural dimensions and processing convenience, without limitation.
The interference fit can generate contact rigidity, transmit torque and bear larger axial force due to tight fit connection. Optionally, a mounting hole is formed in the planet carrier 1, and the pin shaft 5 is connected to the mounting hole in an interference manner, so that the contact rigidity of the pin shaft 5 is improved, and the reliability is improved. In order to reduce the rigidity of the pin shaft 5 near the blade side and improve the flexibility of the pin shaft 5, optionally, an unloading groove 52 is formed in the circumferential direction of the pin shaft 5, the surface, which is abutted against the planet carrier 1, of the bearing 2 near the blade side is an abutting surface, and the notch of the unloading groove 52 is arranged right opposite to the abutting surface so as to reduce the contact rigidity between the pin shaft 5 and the bearing 2 and the contact rigidity between the pin shaft 5 and the planet carrier 1, and further realize the unloading effect of the bearing 2 and the planet carrier 1 and the pin shaft 5 respectively.
Optionally, the unloading groove 52 is an annular groove, and the cross section of the annular groove is rectangular, oval, circular or arc, preferably, the cross section of the annular groove is oval, circular or arc, so as to avoid the stress concentration on the unloading groove 52 from breaking the pin 5, and improve the structural strength of the pin 5.
Specifically, as shown in fig. 3 and 4, the distance from the abutting surface to the bottom of the mounting hole is L1, the width of the unloading groove 52 extending into the planet carrier 1 is C1, wherein C1 is not more than L1, so as to reduce the contact area between the pin 5 and the planet carrier 1, further reduce the contact stiffness, and realize the maximum unloading amount; optionally, the width of the bearing 2 close to the blade side is L2, and the width of the unloading groove 52 penetrating into the bearing 2 close to the blade side is C2, where C2 is not more than 0.25L2, so as to meet the installation requirement between the bearing 2 and the pin 5, and at the same time, the contact area between the bearing 2 and the pin 5 can be correspondingly reduced, so that the contact rigidity is reduced, and unloading is achieved.
Example two
As shown in fig. 5, the present embodiment provides a variable cross-section planetary pin, and the overall structure of the variable cross-section planetary pin provided in the present embodiment is substantially the same as that of the variable cross-section planetary pin in the first embodiment, and the structure of the variable cross-section hole 51 is different, and the structure that is the same as that of the first embodiment is not described again in the present embodiment.
The present embodiment differs from the first embodiment in that the variable-section hole 51 is a stepped hole, and the variable-section hole 51 is a blind hole, and the variable-section hole 51 is opened on the side of the pin 5 near the blade side. Specifically, the stepped hole comprises a first hole part 511 and a second hole part 512 which are sequentially opened, wherein D1 is more than D2; specifically, the diameter of the pin shaft 5 is D, D is more than D1 and is more than or equal to D2 and is more than or equal to 0.5D, the use requirement can be met, the structure is simplified, and the cost is reduced.
EXAMPLE III
The variable cross-section planetary pin shaft provided in this embodiment has the same overall structure as the variable cross-section planetary pin shaft in the first embodiment, and the structure of the variable cross-section hole 51 is different, which is not repeated in this embodiment.
The difference between the embodiment and the first embodiment is that the variable cross-section hole 51 is in the shape of a conical hole or a horn-shaped hole, and the aperture of the variable cross-section hole 51 close to the blade side is larger than the aperture of the variable cross-section hole 51 close to the motor side, specifically, the variable cross-section hole 51 may be a through hole or a blind hole, as long as the size of the aperture of the pin shaft 5 close to the blade side is larger than the size of the aperture close to the motor side, so that the rigidity of the pin shaft 5 close to the blade side is smaller than the rigidity of the pin shaft 5 close to the motor side, the use requirement is met.
Example four
The variable cross-section planetary pin shaft provided in this embodiment has the same overall structure as the variable cross-section planetary pin shaft in the first embodiment, and the structure of the variable cross-section hole 51 is different, which is not repeated in this embodiment.
The difference between the present embodiment and the first to third embodiments is that the pin 5 is provided with at least two variable cross-section holes 51, specifically, each variable cross-section hole 51 is uniformly provided on the pin 5, so that the pin 5 has a uniform structure along the circumferential direction, the stress uniformity is improved, and the deformation of the pin 5 is more uniform when deformed; specifically, the variable cross-section hole 51 may be a stepped hole, a tapered hole, or a flared hole, and the variable cross-section hole 51 may be a through hole or a blind hole, as long as it is ensured that the rigidity of the pin 5 near the blade side is smaller than the rigidity near the motor side, which is not limited.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The variable cross-section planetary pin shaft is characterized in that a variable cross-section hole (51) is formed in the pin shaft (5) in the axial direction, so that the rigidity of the pin shaft (5) close to the blade side is smaller than the rigidity of the pin shaft (5) close to the motor side.
2. A variable cross-section planetary pin according to claim 1, characterized in that the variable cross-section hole (51) is a stepped hole including at least a first hole portion (511) and a second hole portion (512) arranged in this order, the first hole portion (511) is arranged near the blade side, and the first hole portion (511) has a larger hole size than the second hole portion (512).
3. A variable-section planetary pin according to claim 1, characterized in that said variable-section hole (51) is a tapered or flared hole, and the diameter of said variable-section hole (51) on the side close to said blade is greater than the diameter of said variable-section hole (51) on the side close to said motor.
4. A variable-section planetary pin according to any one of claims 1 to 3, characterized in that the cross-section of said variable-section hole (51) is circular, elliptical, polygonal or irregularly shaped.
5. A variable-section planetary pin according to any one of claims 1 to 3, characterized in that said variable-section holes (51) are through holes or blind holes.
6. A variable-section planetary pin according to any one of claims 1 to 3, characterized in that said pin (5) is provided with at least one variable-section hole (51).
7. The variable cross-section planetary pin shaft according to any one of claims 1 to 3, wherein a mounting hole is formed in the planetary carrier (1), the pin shaft (5) is connected to the mounting hole in an interference manner, an unloading groove (52) is formed in the circumferential direction of the pin shaft (5), the surface, close to the blade side, of the bearing (2) in contact with the planetary carrier (1) is a contact surface, and the notch of the unloading groove (52) is arranged opposite to the contact surface.
8. A variable-section planetary pin according to claim 7, characterized in that the relief groove (52) is an annular groove having a rectangular, oval, circular or arc-shaped cross-section.
9. A variable cross-section planetary pin according to claim 7,
the distance from the abutting surface to the bottom of the mounting hole is L1, the width of the unloading groove (52) extending into the planet carrier (1) is C1, wherein C1 is not more than L1;
the width of the bearing (2) close to the blade side is L2, the width of the unloading groove (52) penetrating into the bearing (2) close to the blade side is C2, wherein C2 is less than or equal to 0.25L 2.
10. A planetary transmission comprising a variable cross-section planetary pin according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011436806.7A CN112413105A (en) | 2020-12-07 | 2020-12-07 | Variable cross-section planet pin shaft and planet transmission mechanism |
| PCT/CN2021/131044 WO2022121633A1 (en) | 2020-12-07 | 2021-11-17 | Variable cross-section planetary pin shaft and planetary transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011436806.7A CN112413105A (en) | 2020-12-07 | 2020-12-07 | Variable cross-section planet pin shaft and planet transmission mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN112413105A true CN112413105A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011436806.7A Pending CN112413105A (en) | 2020-12-07 | 2020-12-07 | Variable cross-section planet pin shaft and planet transmission mechanism |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112413105A (en) |
| WO (1) | WO2022121633A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121633A1 (en) * | 2020-12-07 | 2022-06-16 | 南京高速齿轮制造有限公司 | Variable cross-section planetary pin shaft and planetary transmission mechanism |
| CN114739661A (en) * | 2022-03-28 | 2022-07-12 | 南高齿(淮安)高速齿轮制造有限公司 | Planet wheel meshing test simulation device |
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| CN111022615A (en) * | 2019-12-23 | 2020-04-17 | 湘潭大学 | Novel flexible pin shaft load balancing structure for eliminating planet wheel axial inclination angle |
| CN111059262A (en) * | 2019-12-23 | 2020-04-24 | 湘潭大学 | Planetary gear transmission variable-rigidity flexible pin shaft load balancing structure |
| CN214305209U (en) * | 2020-12-07 | 2021-09-28 | 南京高速齿轮制造有限公司 | Variable cross-section planet pin shaft and planet transmission mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022121633A1 (en) * | 2020-12-07 | 2022-06-16 | 南京高速齿轮制造有限公司 | Variable cross-section planetary pin shaft and planetary transmission mechanism |
| CN114739661A (en) * | 2022-03-28 | 2022-07-12 | 南高齿(淮安)高速齿轮制造有限公司 | Planet wheel meshing test simulation device |
| CN114739661B (en) * | 2022-03-28 | 2023-12-22 | 南高齿(淮安)高速齿轮制造有限公司 | Planet wheel meshing test simulation device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022121633A1 (en) | 2022-06-16 |
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